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Sample records for porto um caso

  1. Haemoglobin Porto Alegre in a Cuban family.

    PubMed Central

    Martínez, G; Lima, F; Wade, M; Estrada, M; Colombo, B; Heredero, L; Granda, H

    1977-01-01

    During a screening programme for abnormal haemoglobins in Habana, one case of Hb Porto Alegre was found in 23 000 cases analysed. The ability of this variant to polymerise in vitro and the absence of clinical features in the carriers have been confirmed. These observations are now explained by the findings of high levels of glutathione in the red cells of subjects heterozygous for Hb Porto Alegre: it is suggested that the increase of glutathione is responsible for the absence of in vivo polymerisation and accounts for the lack of clinical symptoms. Images PMID:604493

  2. A Newborn with an Alternative Porto-Caval Shunt

    PubMed Central

    Damar, Çağrı; Alımlı, Ayşe Gül; Derinkuyu, Betül Emine; Özcan, Kudret Ebru; Olgaç, Asburçe; Koç, Ali Murat

    2017-01-01

    Summary Background Absent ductus venosus (ADV) is a rare condition, but it should be known that this embryonic anomaly may be detected by fetal echocardiographic or newborn ultrasound examinations. Case Report We present a baby with an ADV and an accompanying alternative porto-caval shunt between the right portal vein and inferior vena cava detected on postnatal ultrasound examination. Conclusions Variations in the fetal umbilical or porto-systemic circulations should be detected by fetal or newborn ultrasound examinations and kept in mind before common interventions such as UV catheterizations. PMID:28685004

  3. A Newborn with an Alternative Porto-Caval Shunt.

    PubMed

    Damar, Çağrı; Alımlı, Ayşe Gül; Derinkuyu, Betül Emine; Özcan, Kudret Ebru; Olgaç, Asburçe; Koç, Ali Murat

    2017-01-01

    Absent ductus venosus (ADV) is a rare condition, but it should be known that this embryonic anomaly may be detected by fetal echocardiographic or newborn ultrasound examinations. We present a baby with an ADV and an accompanying alternative porto-caval shunt between the right portal vein and inferior vena cava detected on postnatal ultrasound examination. Variations in the fetal umbilical or porto-systemic circulations should be detected by fetal or newborn ultrasound examinations and kept in mind before common interventions such as UV catheterizations.

  4. Monitoring Urban Quality of Life: The Porto Experience

    ERIC Educational Resources Information Center

    Santos, Luis Delfim; Martins, Isabel

    2007-01-01

    This paper describes the monitoring system of the urban quality of life developed by the Porto City Council, a new tool being used to support urban planning and management. The two components of this system--a quantitative approach based on statistical indicators and a qualitative analysis based on the citizens' perceptions of the conditions of…

  5. Management of iatrogenic porto-biliary fistula following biliary stent.

    PubMed

    Chaitowitz, I M; Heng, R; Bell, K W

    2007-12-01

    We describe a case of cystic pancreatic disease causing biliary obstruction requiring percutaneous biliary stenting. The patient subsequently re-presented with severe melaena shown to be due to a rare complication of biliary stenting with development of a porto-biliary fistula from stent erosion, successfully managed with a 'stent-within-stent'.

  6. Fiber Optic-Based Refractive Index Sensing at INESC Porto

    PubMed Central

    Jorge, Pedro A. S.; Silva, Susana O.; Gouveia, Carlos; Tafulo, Paula; Coelho, Luis; Caldas, Paulo; Viegas, Diana; Rego, Gaspar; Baptista, José M.; Santos, José L.; Frazão, Orlando

    2012-01-01

    A review of refractive index measurement based on different types of optical fiber sensor configurations and techniques is presented. It addresses the main developments in the area, with particular focus on results obtained at INESC Porto, Portugal. The optical fiber sensing structures studied include those based on Bragg and long period gratings, on micro-interferometers, on plasmonic effects in fibers and on multimode interference in a large spectrum of standard and microstructured optical fibers. PMID:22969405

  7. [Treatment of Gastroenteropancreatic Neuroendocrine Tumors with 177Lu-DOTA-TATE: Experience of the Portuguese Institute of Oncology in Porto].

    PubMed

    Sampaio, Inês Lucena; Luiz, Henrique Vara; Violante, Liliana Sobral; Santos, Ana Paula; Antunes, Luís; Torres, Isabel; Sanches, Cristina; Azevedo, Isabel; Duarte, Hugo

    2016-11-01

    Introdução: O objetivo deste artigo é rever a experiência do Instituto Português de Oncologia do Porto na terapêutica de tumores neuroendócrinos gastroenteropancreáticos com 177Lu-DOTA-TATE, tendo como principais pontos de análise a segurança e eficáciaterapêutica. Material e Métodos: Foi realizada uma análise retrospetiva dos processos clínicos de doentes com tumores neuroendócrinos gastroenteropancreáticos, submetidos a terapêutica com 177Lu-DOTA-TATE entre abril de 2011 e novembro de 2013. Resultados: Dos 36 casos revistos, 30 completaram os três ciclos de 177Lu-DOTA-TATE (83,3%). Nesses doentes foram registados: efeitos colaterais agudos em 8,9% dos ciclos; toxicidade hepática grau 3 CTCAE em 13,3% dos doentes (todos com alterações prévias da função hepática); ausência de toxicidade renal ou hematológica significativa; melhoria sintomática em 71,4% dos doentes; tempo mediano global desde o início da terapêutica até progressão de doença de 25,6 meses; tempo mediano global de sobrevivência desde o diagnóstico de 121,7 meses. Verificou-se um maior tempo livre de progressão de doença e de sobrevivência nos doentes com expressão elevada de recetores da somatostatina (p < 0,05). Discussão: A peptide receptor radionuclide therapy com 177Lu-DOTA-TATE apresenta respostas clínicas favoráveis com segurança e boa tolerabilidade terapêutica, conforme evidenciado no nosso estudo pelos seguintes achados: melhoria dos sintomas na maioria dos doentes e aumento significativo do tempo livre de progressão de doença e da sobrevivência (sobretudo nos doentes com expressão elevada de sstr), com efeitos colaterais agudos e subagudos/crónicos significativos numa minoria de doentes. Conclusão: A peptide receptor radionuclide therapy com 177Lu-DOTA-TATE é uma terapêutica promissora, com benefícios reais em termos de eficácia e segurança nos doentes com tumores neuroendócrinos gastroenteropancreáticos.

  8. [Medication adherence of elderly in Porto Alegre, RS].

    PubMed

    Rocha, Cristiane Hoffmeister; de Oliveira, Ana Paula Sueiro; Ferreira, Caroline; Faggiani, Fabiana Tôrres; Schroeter, Guilherme; de Souza, Antônio Carlos Araújo; DeCarli, Geraldo Attilio; Morrone, Fernanda Bueno; Werlang, Maria Cristina

    2008-04-01

    Polipharmacy and medication non-adherence are problems faced frequently in the treatment of elderly patients. An exploratory cross-sectional study and quantitative approach were conducted to assess the frequency of treatment-adherence in elderly and how polipharmacy can affect adherence. Four hundred and sixty six elderly answered a questionnaire in Porto Alegre, RS in individual interviews. The adherence frequency found was 173 (37.1%) and was higher among those, who use less medication. These results indicate the need for implementing educational programs for the elderly in order to help them to follow their drug therapy.

  9. Developing the 1st MOOC of University of Porto: Challenges and Strategies

    ERIC Educational Resources Information Center

    Martins, Isabel; Regadas, Nuno; Amaral, Margarida

    2016-01-01

    This article is a case study on how the educational technologies unit of the Digital University describes the experience of thinking, creating multimedia contents and training teachers regarding the development of the first MOOC of University of Porto (U.Porto). Upon describing this experience, we focus on the most relevant topics such as how the…

  10. Determination of Porto-Azygos Shunt Anatomy in Dogs by Computed Tomography Angiography.

    PubMed

    Or, Matan; Ishigaki, Kumiko; de Rooster, Hilde; Kutara, Kenji; Asano, Kazushi

    2016-11-01

    To describe the morphology of porto-azygos shunts in a large series of dogs using computed tomography (CT) angiography. Retrospective study. Dogs (n=36) with porto-azygos shunts. CT angiography was performed in dogs subsequently proven to have a porto-azygos shunt. The origin and insertion of the shunts were assessed on native images. The diameter of the porto-azygos shunt and the portal vein, cranial and caudal to the shunt origin, were measured. The porto-azygos shunt anatomy was studied on three-dimensional images. All porto-azygos shunts originated either in the left gastric vein (33 left gastro-azygos shunts) or the right gastric vein (3 right gastro-azygos shunts). Two left gastro-azygos shunts had concurrent caval-azygos continuation and 2 right gastro-azygos shunts had a caudal splenic loop. All shunts crossed the diaphragm through the esophageal hiatus. The majority of porto-azygos shunts (32) followed a straight pathway after traversing the diaphragm, although 4 shunts followed a tortuous route. All shunts terminated in the thoracic part of the azygos vein, perpendicular to the aorta. The shunt diameter at insertion was only 3 mm on average. The insertion site was consistently the narrowest part of the shunt. CT angiography was well suited to provide anatomic details of porto-azygos shunts and comprehensively documented that all porto-azygos shunts had a thoracic terminus, after crossing the diaphragm through the esophageal hiatus. Different shunt types existed with minor variations. © Copyright 2016 by The American College of Veterinary Surgeons.

  11. The Porto Alegre Early Life Nutrition and Health Study

    PubMed Central

    Chaffee, Benjamin W.; Vitolo, Márcia Regina; Feldens, Carlos Alberto

    2015-01-01

    Early childhood caries is a persistent worldwide problem. The etiologic contribution of feeding practices has been less frequently investigated in prospective studies of young children. The Porto Alegre Early Life Nutrition and Health Study has followed a birth cohort of 715 mother-child pairs, recruited from municipal health centers, originally involved in a cluster-randomized controlled trial of healthcare worker training. The birth cohort links prospectively collected socio-demographic, infant feeding, and general and oral health information. To date, oral health data, including caries status and oral health related quality of life, have been collected for 458 children at age 2-3 years. Studies are underway to investigate possible determinants and consequences of oral health among these children. PMID:25388499

  12. The ethnopharmacology of Madeira and Porto Santo Islands, a review.

    PubMed

    Rivera, D; Obón, C

    1995-05-01

    The ethnopharmacology of Madeira and Porto Santo Islands is extremely interesting because of the cultural and biogeographic features of this region, which make it a centre of medicinal plant diversity (richness of endemic flora, geographical isolation in the Atlantic sea, crosscultural influences, and past abundance of local healers). The medicinal flora of Madeira is composed of 259 species. Some noteworthy medicinal taxa, endemic or locally relevant, are: Acanthus mollis, Aeonium glandulosum, Aeonium glutinosum, Bidens pilosa, Borago officinalis, Chamaemelum nobile var. discoideum, Culcita macrocarpa, Echium nervosum, Euphorbia platiphylla, Helichrysum melaleucum, Helichrysum obconicum, Hypericum glandulosum, Hypericum humifussum, Kleinia repens, Laurus azorica, Monizia edulis, Ocotea foetens, Psoralea bituminosa, Rubus bollei, Rumex maderensis, Sambucus lanceolata, Scilla maderensis, Sedum brissemoretii, Sedum farinosum, Sedum nudum, Sibthorpia peregrina, Teucrium betonicum, Thymus caespititius, Trifolium squamosum and Vaccinium padifolium. Among the medicinal cryptogams, one can underline the parasitic fungus Laurobasidium lauri, which grows on the stems of Laurus azorica and is used as an antirheumatic, haemostatic, emmenagogue, insecticide and analeptic.

  13. Teaching forensic medicine in the University of Porto.

    PubMed

    Magalhães, Teresa; Dinis-Oliveira, Ricardo Jorge; Santos, Agostinho

    2014-07-01

    The University of Porto (UP) provides education in Forensic Medicine (FM) through the 1st, 2nd and 3rd cycle of studies, post-graduation and continuing education courses. This education is related to forensic pathology, clinical forensic medicine (including forensic psychology and psychiatry), forensic chemistry and toxicology, forensic genetics and biology, and criminalistics. With this work we intent to reflect on how we are currently teaching FM in the UP, at all levels of university graduation. We will present our models, regarding the educational objectives, curricular program and teaching/learning methodologies of each cycle of studies as well as in post-graduate and continuing education courses. Historically, and besides related administratively to the Ministry of Justice, the Portuguese Medico-Legal Institutes (since 1918) and more recently the National Institute of Legal Medicine and Forensic Sciences (INMLCF) also have educational and research responsibilities. Thus, it lends space and cooperates with academic institutions and this contribution, namely regarding teaching forensic sciences in Portugal has been judged as an example for other Countries. This contribution is so important that in UP, the Department of Legal Medicine and Forensic Sciences of the Faculty of Medicine (FMUP) shares, until now, the same physical space with North Branch of the INMLCF, which represents a notorious advantage, since it makes possible the "learning by doing". Copyright © 2014 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved.

  14. Emergence of NDM-1-producing Enterobacteriaceae in Porto Alegre, Brazil.

    PubMed

    Rozales, Franciéli P; Ribeiro, Vanessa B; Magagnin, Cibele M; Pagano, Mariana; Lutz, Larissa; Falci, Diego R; Machado, Adão; Barth, Afonso L; Zavascki, Alexandre P

    2014-08-01

    To evaluate the emergence of New Delhi metallo-β-lactamase 1 (NDM-1)-producing Enterobacteriaceae isolates in Brazil. From April to October 2013, following the detection of the first NDM-1-producing isolate, a surveillance study was performed for the detection of blaNDM-1 among Enterobacteriaceae isolates with reduced susceptibility to carbapenems in 17 hospitals of Porto Alegre, Brazil. Real-time PCR was used to determine the presence of carbapenemase genes, which were further sequenced. Clonal relatedness was assessed by pulsed-field gel electrophoresis (PFGE). A total of 1134 isolates were evaluated. blaNDM-1 was detected in 11 (0.97%) isolates: nine Enterobacter cloacae complex (eight belonging to a single clone recovered from two distinct hospitals and the other strain from a third hospital) and two Morganella morganii (belonging to a single clone recovered from one hospital). Most isolates presented high-level resistance to carbapenems. NDM-1-producing Enterobacteriaceae have emerged rapidly in the hospitals of the Brazilian city where they were first detected. The emergence of NDM-1 in Brazil is of great concern, since it is a severe threat to antimicrobial therapy against Enterobacteriaceae in this country. Copyright © 2014 The Authors. Published by Elsevier Ltd.. All rights reserved.

  15. Assessing and monitoring urban resilience using COPD in Porto.

    PubMed

    Monteiro, Ana; Carvalho, Vânia; Velho, Sara; Sousa, Carlos

    2012-01-01

    COPD morbidity is a good example of how the urban form may interfere with a disease's severity. Then, it may play an important role as a stimulus to increase the acceptability of several policy actions that aim to upgrade urban resilience. Despite the multiple dimensions of wellbeing, health is surely a key variable attracting everyone's attention, which is thus more likely to be able to persuade people that actions that may at first seem undesirable are fundamental in improving urban sustainability and well-being. After creating a short list of socio-economic and environmental factors relating to the onset and aggravation of COPD, daily admissions distributions were compared using both a non-weighted and a weighted multi-criteria hierarchical analysis procedure. Porto's COPD Social and Environmental Inequalities Index (SEII), calculated with a hierarchical analysis procedure, accurately illustrates a great relationship between COPD admissions and adverse urban form variables. COPD may be an important communication tool to stimulate the acceptability of some otherwise unpopular planning measures to improve urban resilience (sustainability and well-being). Copyright © 2011 Elsevier B.V. All rights reserved.

  16. Porto Alegre as a Counter-Hegemonic "Global City": Building Globalization from below in Governance and Education

    ERIC Educational Resources Information Center

    Gandin, Luis Armando

    2011-01-01

    This paper analyzes the case of Porto Alegre, Brazil as a counter-hegemonic global city. Porto Alegre is a city with no particular relevance to neoliberal globalization that, nevertheless, was launched to a global scale by transformations in local governance. New mechanisms of deliberative democracy captured the attention of social actors…

  17. Porto Alegre as a Counter-Hegemonic "Global City": Building Globalization from below in Governance and Education

    ERIC Educational Resources Information Center

    Gandin, Luis Armando

    2011-01-01

    This paper analyzes the case of Porto Alegre, Brazil as a counter-hegemonic global city. Porto Alegre is a city with no particular relevance to neoliberal globalization that, nevertheless, was launched to a global scale by transformations in local governance. New mechanisms of deliberative democracy captured the attention of social actors…

  18. Utility of Stent-Grafts in Treatment of Porto-Biliary Fistula

    SciTech Connect

    Peynircioglu, Bora; Cwikiel, Wojciech

    2006-12-15

    A porto-biliary fistula causing hemobilia is a known complication of percutaneous transhepatic biliary drainage (PTBD). We present two patients with hemobilia secondary to porto-biliary fistula, treated successfully by percutaneous placement of stent-grafts. In one case, the stent-graft was placed in the bile duct, and in the other case, it was placed in the intrahepatic portal vein branch. Hemobilia stopped and there were no complications except a small area of hepatic infarction, distal to the stent-graft in the portal vein.

  19. Modelling the photochemical pollution over the metropolitan area of Porto Alegre, Brazil

    NASA Astrophysics Data System (ADS)

    Borrego, C.; Monteiro, A.; Ferreira, J.; Moraes, M. R.; Carvalho, A.; Ribeiro, I.; Miranda, A. I.; Moreira, D. M.

    2010-01-01

    The main purpose of this study is to evaluate the photochemical pollution over the Metropolitan Area of Porto Alegre (MAPA), Brazil, where high concentrations of ozone have been registered during the past years. Due to the restricted spatial coverage of the monitoring air quality network, a numerical modelling technique was selected and applied to this assessment exercise. Two different chemistry-transport models - CAMx and CALGRID - were applied for a summer period, driven by the MM5 meteorological model. The meteorological model performance was evaluated comparing its results to available monitoring data measured at the Porto Alegre airport. Validation results point out a good model performance. It was not possible to evaluate the chemistry models performance due to the lack of adequate monitoring data. Nevertheless, the model intercomparison between CAMx and CALGRID shows a similar behaviour in what concerns the simulation of nitrogen dioxide, but some discrepancies concerning ozone. Regarding the fulfilment of the Brazilian air quality targets, the simulated ozone concentrations surpass the legislated value in specific periods, mainly outside the urban area of Porto Alegre. The ozone formation is influenced by the emission of pollutants that act as precursors (like the nitrogen oxides emitted at Porto Alegre urban area and coming from a large refinery complex) and by the meteorological conditions.

  20. Canine heartworm disease in Porto Velho: first record, distribution map and occurrence of positive mosquitoes.

    PubMed

    Ogawa, Guilherme Maerschner; da Cruz, Edson Neves; Cunha, Príscila Nayara Araújo; Camargo, Luís Marcelo Aranha

    2013-01-01

    The aim of this study was to make the first report on canine heartworm disease in the state of Rondônia and confirm its transmission in this state. Blood samples were randomly collected from 727 dogs in the city of Porto Velho. The samples were analyzed to search for microfilariae and circulating antigens, using three different techniques: optical microscopy on thick blood smears stained with Giemsa; immunochromatography; and PCR. Mosquitoes were collected inside and outside the homes of all the cases of positive dogs and were tested using PCR to search for DNA of Dirofilaria immitis. Ninety-three blood samples out of 727 (12.8%) were positive according to the immunoassay technique and none according to the thick smear method. Among the 93 positive dogs, 89 (95.7%) were born in Porto Velho. No difference in the frequency of infection was observed between dogs raised indoors and in the yard. PCR on the mosquitoes resulted in only one positive pool. This result shows that the transmission of canine heartworm disease is occurring in the city of Porto Velho and that there is moderate prevalence among the dogs. The techniques of immunochromatography and PCR were more effective for detecting canine heartworm than thick blood smears. The confirmation of canine heartworm disease transmission in Porto Velho places this disease in the ranking for differential diagnosis of pulmonary nodules in humans in Rondônia.

  1. Age of A2 Horizon Charcoal and Forest Structure near Porto Trombetas, Pará , Brazil

    Treesearch

    John K. Francis; Oliver Henry Knowles

    2001-01-01

    To study the structure and composition of old-growth forest in the Saracá-Taquera National Forest near Porto Trombetas, Brazil, we established 36 0.25 ha plots and described the vegetation. We collected charcoal from the A2 soil horizon of each plot for radiocarbon dating. Although fires have been very rare in this forest during historic times, the...

  2. Stereological measurement of porto-central gradients in gene expression in mouse liver.

    PubMed

    Ruijter, Jan M; Gieling, Roben G; Markman, Marry M; Hagoort, Jaco; Lamers, Wouter H

    2004-02-01

    The liver is thought to consist of lobules, numerous repeating, randomly oriented units. Within these lobules, genes are expressed in gradients along the porto-central axis, which spans the distance between portal and central veins. We have developed a robust stereological method to map all points in an image to their position on this porto-central axis. This approach is based on the distribution of well-characterized periportal and pericentral enzymes, which are visualized on sections preceding and following the section of interest. Because expression of the model genes phosphoenolpyruvate carboxykinase and ornithine aminotransferase declines gradually with increasing distance from the portal vein and central vein, respectively, these genes can be used to prepare images with topographical information without any assumption about the shape of the hepatic unit, or about the direction or shape of the gradient to be determined. The "relative distance" image is a 2-dimensional image that accurately maps the relative position of hepatocytes on the porto-central axis in 3-dimensional space. It is superimposed on the serial section under investigation to relate local staining density to position on the porto-central axis and obtain the gene expression gradient. The method was used to determine the expression gradient of 2 periportal and 2 pericentral enzymes and their response to fasting. The "total distance" image was used to measure the length of the porto-central axis, which was approximately 210 microm in mice and found to decrease 13% after 1 day of starvation. The method can be applied to any tissue component that can be stained quantitatively.

  3. [Prevalence of diabetes mellitus in chronic renal failure patients under haemodialysis in Porto Alegre, Brazil].

    PubMed

    Burmeister, Jayme Eduardo; Mosmann, Camila Borges; Bau, Renata; Rosito, Guido Aranha

    2012-06-01

    The most common cause of chronic renal failure (CRF) among patients who are starting on dialysis in developed countries is diabetes mellitus (DM), with growing rates approaching 50%. In Brazil, the available data indicate a lower prevalence, around 27%, even though it is also increasing. To estimate the prevalence of DM in the adult population of patients on hemodialysis for CRF in Porto Alegre, Brazil. Cross-sectional, descriptive, quantitative and analytical survey study on the prevalence of DM among the 1,288 patients on hemodialysis (HD) in all the 15 clinics in the city from June to July, 2009. 488 diabetic patients were identified, a prevalence of 37.9%, ranging from 21 - 75% in the different clinics of the city. The prevalence of DM among chronic HD patients in Porto Alegre is higher than what was previously published as a cause of CRF in the country, which indicates the possibility that this etiology of CRF may have been underestimated.

  4. Transdiaphragmatic Approach to Attenuate Porto-Azygos Shunts Inserting in the Thorax.

    PubMed

    Or, Matan; Kitshoff, Adriaan; Devriendt, Nausikaa; De Ridder, Marianne; Quist-Rybachuk, Galena; de Rooster, Hilde

    2016-11-01

    To describe the surgical technique and document the application of a transdiaphragmatic approach to attenuate porto-azygos shunts inserting in the thoracic section of the azygos vein. Cadaveric study and prospective case series. Canine cadavers (n=6) and client-owned dogs with porto-azygos shunts inserting in the thoracic section of the azygos vein (n=9). In the cadavers, the azygos vein was filled with aqueous latex. Landmarks were established for creating a safe transdiaphragmatic approach to the caudal intrathoracic portion of the azygos vein. In the clinical cases, porto-azygos communication was diagnosed by trans-splenic portal scintigraphy. All shunts were attenuated close to their insertion site via ventral midline celiotomy and a transdiaphragmatic approach to the shunt. Perioperative complications were recorded. A 3-5 cm incision, 0.5-1 cm ventral and lateral to the level of the aortic hiatus, was made in the pars lumbalis part of the diaphragm. Stay sutures at both sides of the diaphragmatic incision were placed to open up the incision and a retractor was used to push the esophagus away from the aorta. Intrathoracic insertion of the shunt was confirmed intraoperative. Exposure of the shunt insertion site at the azygos vein was excellent in all clinical cases. No intraoperative or postoperative complications were encountered. If thoracic attenuation of a porto-azygos shunt is considered, a transdiaphragmatic approach exposes the insertion site for shunt attenuation. This approach is straightforward, without unnecessary abdominal organ manipulation, and since attenuates at the insertion, avoids missing additional contributing branches. © Copyright 2016 by The American College of Veterinary Surgeons.

  5. Frequency of dermatophytes in the metropolitan area of Porto Alegre, RS, Brazil.

    PubMed

    Mezzari, A

    1998-01-01

    In order to evaluate the distribution of dermatophytes in Porto Alegre, the capital of the state of Rio Grande do Sul, Brazil, they were isolated from the skin, hairs and nails samples and retrospectively analyzed from June 1981 to June 1995, in two different institutions in the city of Porto Alegre: (i) the Serviço de Micologia do Instituto de Pesquisas Biológicas Jandyr Maya Faillace, da Secretaria de Saúde e Meio Ambiente do Rio Grande do Sul which attends the low income population (low and middle classes) and, (ii) Laboratório Weinmann, a clinical pathology laboratory which attends predominantly the higher income population (middle and upper classes), both which attend in the metropolitan area of Porto Alegre. The dermatophyte predominance of Trichophyton rubrum was confirmed (55.33%) followed by T. mentagrophytes (21.46%). The data obtained were compared with the existing prevalence data which were collected in the interior of the state over a period of 32 years (1960-1992). T. verrucosum, T. simii, Microsporum persicolor, T. schöenleinii, M. nanum and M. cookei were isolated in the interior and have not been found in the capital so far. On the other side, T. violaceum was, isolated in the capital and has not been found in the interior so far.

  6. Decreasing flood risk perception in Porto Alegre - Brazil and its influence on water resource management decisions

    NASA Astrophysics Data System (ADS)

    Allasia, D. G.; Tassi, R.; Bemfica, D.; Goldenfum, J. A.

    2015-06-01

    Porto Alegre is the capital and largest city in the Brazilian state of Rio Grande do Sul in Southern Brazil with approximately 1.5 million inhabitants. The city lies on the eastern bank of the Guaiba Lake, formed by the convergence of five rivers and leading to the Lagoa dos Patos, a giant freshwater lagoon navigable by even the largest of ships. This river junction has become an important alluvial port as well as a chief industrial and commercial centre. However, this strategic location resulted in severe damage because of its exposure to flooding from the river system, affecting the city in the years 1873, 1928, 1936, 1941 and 1967. In order to reduce flood risk, a complex system of levees and pump stations was implemented during 1960s and 1970s. Since its construction, not a single large flood event occurred. However, in recent years, the levees in the downtown region of Porto Alegre were severally criticized by city planners and population. Several projects have been proposed to demolish the Mauá Wall due to the false perception of lack of flood risk. Similar opinions and reactions against flood infrastructure have been observed in other cities in Brazil, such as Itajaí and Blumenau, with disastrous consequences. This paper illustrates how the perception of flood risk in Porto Alegre has changed over recent years as a result of flood infrastructure, and how such changes in perceptions can influence water management decisions.

  7. Assessment and physiological state of the Posidonia oceanica meadows in Porto Cristo (Manacor, Spain)

    NASA Astrophysics Data System (ADS)

    Sureda, Antoni; Box, Antonio; Tejada, Silvia

    2015-12-01

    In the Mediterranean Sea, Posidonia oceanica is the main seagrass meadow that brings food and shelter to many species. The P. oceanica deterioration is an indicator of its own status, since it is sensitive to many disturbances, such as human impacts or alien species. Lately, oxidative stress has been pointed out as another possible biomarker of the animal and plant status. The aim of this work was to evaluate the physiological status of the P. oceanica meadows in the Porto Cristo bay (Manacor, Mallorca, Balearic Islands, Western Mediterranean), evaluating the possible impact induced by human activity performed in the area. In situ measurements were quantified (shoot density, and the maximum length and width of P. oceanica leaves) by scuba divers. Leaf samples were collected to determine the catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities. The malondialdehyde (MDA) level as marker of lipid peroxidation was also evaluated. Shoot density, and length and width measurements of the leaves in the inner locations of the bay showed inferior structural features than the leaves from the outer areas. CAT, SOD and GPx enzymatic activities and lipid peroxidation were higher in leaves from the internal zones than in the outer placements. In conclusion, the general status of the of P. oceanica meadows on the Porto Cristo Bay according to structural and oxidative biomarkers evidenced a good physiological condition, although the areas nearest to the harbour and the beach reflect signs of human affection. Altogether, it reflects a good physiological condition of the meadows in the external areas of the Porto Cristo Bay.

  8. Percutaneous Transjugular Direct Porto-caval Shunt in Patients with Budd-Chiari Syndrome

    SciTech Connect

    Quateen, A.; Pech, M.; Berg, T.; Bergk, A.; Podrabsky, P.; Felix, R.; Ricke, J.

    2006-08-15

    The purpose of the study was to evaluate the feasibility and effectiveness of direct porto-caval shunts in patients with Budd-Chiari syndrome (BCS) in whom there is no access to the hepatic veins during transjugular intrahepatic portosystemic shunt (TIPSS). We included six consecutive patients with fulminant/acute Budd-Chiari syndrome (mean age: 35 years) in whom a conventional TIPSS was not possible due to inaccessible hepatic veins. We performed a direct porto-caval shunt via a transhepatic approach. Patients were followed up by means of clinical examination, laboratory investigations, and Doppler ultrasound. TIPSS implantation from the inferior vena cava (IVC) was successful in all six patients (100%). The median transhepatic shunt length was 9 cm (8-10 cm). No procedure-related complications were observed in our patients. Early shunt occlusion occurred in three out of six patients (50%). In all three of these patients, the stent used to stabilize the shunt ended 1-2 cm before reaching the IVC. All occlusions were successfully recanalized. One of these patients developed recurrent early shunt as well as mesenteric and splenic vein occlusions. She died 7 days after TIPSS placement due to an unmanageable coagulation disorder. The remaining five patients were followed up by planned clinical examination and laboratory investigations (mean follow-up time was 15 months; patient 1 was followed up for 13 months, patient 2 for 14 months, patient 3 for 15 months, and patients 4 and 5 for 16 months) and all displayed a complete and durable resolution of liver failure and ascites without reintervention. In patients with acute liver failure originating from BCS and inaccessible hepatic veins, a direct transhepatic porto-caval shunt can be performed safely and effectively under ultrasound guidance. Future studies in larger patient groups should investigate if the patency of transcaval TIPSS with long transhepatic shunt segments is similar compared to conventional TIPSS via

  9. [Mental illness in women in Porto Alegre, Rio Grande do Sul, Brazil (1870-1910)].

    PubMed

    Vasconcellos, Cristiane Teresinha de Deus Virgili; Vasconcellos, Silvio José Lemos

    2007-05-01

    The relationship between female gender and mental illness is complex, remaining largely a product of women's social situation as daughters, wives, and mothers. The main objective of this article is to discuss the historical aspects related to mental illness in women in Porto Alegre, Rio Grande do Sul, Brazil, from 1870 to 1910. The authors consulted records from several so-called insane asylums as well as periodical articles published during the period. These documents provide good insight into how psychiatrists and lay society interpreted mental disorders in women. The research contributes to an understanding of the historical issues related to diagnosis of mental illness and the implications for current practice.

  10. The Intraplate Seismogenic Zone of Porto dos Gauchos in the Amazon Craton, Brazil

    NASA Astrophysics Data System (ADS)

    Barros, L. V.; Assumpcao, M. S.; Quintero, R. Q.

    2007-05-01

    The Porto dos Gauchos Seismogenic Zone (PGSZ), in the center north of Mato Grosso State, in the contact between the southern Amazonian Craton and northern Parecis Basin, represents one of the most important area of seismic activity in Brazil, with the largest magnitude ever observed in the stable continent of the South America plate (6.2 mb on January 31, 1955). Focal mechanism studies indicated a pure reverse faulting regime with compressional SHmax. oriented in SE-NW direction. After the 1955 earthquake, located in Serra do Tombador, a recurrent seismicity has been detected in Porto dos Gauchos, 100 km northeast of Serra do Tombador. No recent events have been detected in the area of the 1955 epicenter, suggesting a long recurrence time or mislocation of Serra do Tombador earthquake. The Porto dos Gauchos recurrent seismicity has been observed since 1959, when a 4.5 macroseismic estimated magnitude was felt by local inhabitants settled in that remote area two years earlier. In subsequent years, with deployment of regional stations in Brazilian Amazon region earthquakes were detected in 1981 (3.8 mb), 1989 (3.3 mb), 1993 (3.8 mb), 1996 (4.4 mb), 1997 (3.3 mb), and finally on March 10, 1998 (5.1 mb). The aftershocks of 1998 main shock were studied with a local network with up to eight 3- component stations. Such network detected more than 2500 events until December of 2002, when the network was deactivated, but only 100 were accurately located. Based on this set of events and a controlled source experiment we determined a 1-D velocity model for the area, a composite focal mechanism with P wave polarities, spectral analysis studies to estimate the source dimension, stress drop and moment magnitudes for the main shock and some others events of the set. On March 23, 2005 another shock occurred in the same seismogenic area of Porto dos Gauchos, with magnitude 4.7 to 5.0. One week later five stations were installed again to monitor the aftershock activity, detecting

  11. [The role of tropical medicine in the dissertations of the Porto school of medicine, 1875-1923].

    PubMed

    Costa, Rui Manuel Pinto; Vieira, Ismael Cerqueira

    2014-01-01

    Since 1827 the Escola Médico-Cirúrgica of Porto published hundreds of inaugural dissertations dedicated to a broad range of subjects of medical nature. Bearing in mind the prevalence of the Lisbon school in the elaboration of its own scientific knowledge in the field of tropical medicine, the contribution of the Porto establishment may well be considered residual in comparative terms. However, between 1875 and 1923, there are documentary sources that address tropical diseases, particularly malaria. This work purports to show the contributions made by the Escola Médico-Cirúrgica of Porto to a theme which initially did not arouse specific interest of northern Portuguese physicians, duly analyzing and defining the scientific output in the field of tropical medicine.

  12. Laparoscopic splenectomy and porto-azygos disconnection: clinical research in the treatment of portal hypertension

    PubMed Central

    Fengyong, Wang; Yuanshui, Sun; Zhangbing; Yuewu, Wu; Weihua, Zhan; Jianfeng, Shi; Qi, Wu; Jinming, Liu; Ji, Xu; Zaiyuan, Ye

    2015-01-01

    To investigate the safety and efficacy of laparoscopic splenectomy and portaazygous devascularization, we studied laparoscopic splenectomy and porto-azygos devascularization patients within the peri-operative period. Clinical data and curative effect are detailed alongside statistical analysis. The laparoscopic splenectomy and porto-azygos devascularization operation time was 2.56 + 0.62 hours. The intraoperative bleeding and anal exhaust time was 149.5 + 32.7ml 3.47 + 1.32 days, and the hospitalization time was 5.05 + 1.22 days. When the spleen volume was greater than or equal to 1.5 liters, the rate of open abdominal surgery increased significantly. After 1, 2, 3, and 4 years of follow-up, cumulative recurrence bleeding rates were 0, 5.20%, 9.98%, and 15.83%, respectively. Laparoscopic splenectomy and pericardial devascularization is safe, effective, and feasible, and it can be confirmed by enhanced spiral computed tomography (CT). Whether spleen volume greater than 1.5L is suited to laparoscopic surgery requires further research.

  13. SIXTEEN YEARS OF PITYRIASIS VERSICOLOR IN METROPOLITAN AREA OF PORTO ALEGRE, SOUTHERN BRAZIL

    PubMed Central

    HEIDRICH, Daiane; DABOIT, Tatiane Caroline; STOPIGLIA, Cheila Denise Ottonelli; MAGAGNIN, Cibele Massotti; VETORATTO, Gerson; AMARO, Taís Guarienti; SCROFERNEKER, Maria Lúcia

    2015-01-01

    SUMMARY Pityriasis versicolor is the most common of the diseases caused by Malasseziayeasts. The aim of this study is to determine the prevalence of pityriasis versicolor and its etiological aspects in the metropolitan area of Porto Alegre, Brazil. A retrospective crosssectional study with data from patients of a reference hospital from 1996 to 2011 was performed. Collected data included: date, age, gender, ethnicity, anatomical region of lesion and the direct mycological examination results. Among the positive results in the direct mycological examination, 5.8% (2,239) were positive for pityriasis versicolor. The angular coefficient (B) was -0.3%/year, showing a decrease over the years. The disease was more prevalent in men (7.1% of men versus 5.1% of women that underwent the direct mycological examination); younger age (median 31 years old); "pardo" and black people (3.7% more than expected in the sample); trunk (73.44% of the affected anatomic sites). Lesions in rare sites (groin, genitals, legs, feet and hands) were also observed in this study. In conclusion, due to the decrease in the prevalence of pityriasis versicolor, long-term epidemiological studies in the metropolitan area of Porto Alegre, Brazil, are needed to continue the monitoring of this disease. PMID:26422149

  14. International Psychological Applications Conference and Trends (InPACT) Proceedings (Porto, Portugal, April 4-6, 2014)

    ERIC Educational Resources Information Center

    Pracana, Clara, Ed.

    2014-01-01

    We are delighted to welcome you to the International Psychological Applications Conference and Trends 2014, taking place in Porto, Portugal, from 4 to 6 of April. Psychology, in our time, offers a large range of scientific fields where it can be applied. The goal of understanding individuals and groups (mental functions and behavioral…

  15. Ticks (Acari: Ixodidae) on wild animals from the Porto-Primavera Hydroelectric power station area, Brazil.

    PubMed

    Labruna, Marcelo B; de Paula, Cátia D; Lima, Thiago F; Sana, Dênis A

    2002-12-01

    From June 2000 to June 2001, a total of 741 ticks were collected from 51 free-living wild animals captured at the Porto-Primavera Hydroelectric power station area, located alongside an approximately 180 km course of the Paran river, between the states of S o Paulo and Mato Grosso do Sul, comprising 9 species of 3 genera: Ambly-omma (7 species), Boophilus (1) and Anocentor (1). A total of 421 immature Amblyomma ticks were reared in laboratory until the adult stage, allowing identification of the species. A. cajennense was the most frequent tick species (mostly immature stages) collected on 9 host species: Myrmecophaga tridactyla, Tamandua tetradactyla,Cerdocyon thous, Puma concolor,Tayassu tajacu, Mazama gouazoubira,Hydrochaeris hydrochaeris,Alouatta caraya, Cebus apella. Other tick species were less common, generally restricted to certain host taxa.

  16. [Positivism and medical science in Rio Grande do Sul: the Faculdade de Medicina de Porto Alegre].

    PubMed

    Weber, B T

    1998-01-01

    The article analyzes conflicts and interests at one of Rio Grande de Sul's main centers for medical science, the Faculdade de Medicina de Porto Alegre. It explores the meaning and impact of the emergence of this specific, exclusive field of knowledge in a state where positivist principles of professional freedom were adopted by successive administrations during the early period of the Republic. Physicians there launched an entrenched war to uphold the principles of science over faith and politics, challenging the positivism of the party which held power in Rio Grande do Sul throughout the years. This perspective grew and developed in a climate of conflict and doubts among physicians, within a political context that differed from the rest of Brazil.

  17. Amazon forest fires between 2001 and 2006 and birth weight in Porto Velho.

    PubMed

    Prass, Taiane S; Lopes, Sílvia R C; Dórea, José G; Marques, Rejane C; Brandão, Katiane G

    2012-07-01

    Birth weight data (22,012 live-births) from a public hospital in Porto Velho (Amazon) was used in multiple statistical models to assess the effects of forest-fire smoke on human reproductive outcome. Mean birth weights for girls (3,139 g) and boys (3,393 g) were considered statistically different (p-value < 2.2e-16). Among all models analyzed, the means were considered statistically different only when treated as a function of month and year (p-value = 0.0989, girls and 0.0079, boys) . The R (2) statistics indicate that the regression models considered are able to explain 65 % (girls) and 54 % (boys) of the variation of the mean birth weight.

  18. The experience of the Forensic Anthropology Service of the Medical Examiner's Office in Porto Alegre, Brazil.

    PubMed

    Vaz, Márcia; Benfica, Francisco Silveira

    2008-08-06

    The Forensic Anthropology Service of the Medical Examiner's Office of Porto Alegre was created in September 1997 to examine human skeletons, establish identification and identify lesions that may explain death. From September 1997 to December 2006, 344 skeletons were examined (mean: 37 examinations/year), and 322 were human remains. Most skeletal remains belonged to men (61%) whose age was estimated at 21-50 years (61%). The most frequent bone lesions were caused by fractures (71%), firearm projectiles (11%) and the effects of weather (10%). Antemortem bone changes due to consolidated fractures, degenerative bone processes, congenital bone diseases, and medical procedures were found in 38 skeletal remains (14%). Identification was possible in 83 cases (26%); of these, 78% were identified by DNA analysis, 16% by dental examination, and 6% by anatomic changes associated with healed fractures.

  19. RUSICA initial implementations: Simulation results of sandy shore evolution in Porto Cesareo, Italy

    NASA Astrophysics Data System (ADS)

    Calidonna, Claudia Roberta; Di Gregorio, Salvatore; Gullace, Francesco; Gullı, Daniel; Lupiano, Valeria

    2016-06-01

    Beach recession is spreading in Mediterranean by effects of climatic change. RUSICA is a Cellular Automata model, that is in developing phase for simulating such a complex phenomenon, considering its main mechanisms: loose particles (sand, gravel, silt, clay, etc.) mobilization, suspension, deposit and transport, triggered by waves and currents. A simplified version of the model was implemented and applied to data, related to the sandy shore of Torre Lapillo (Porto Cesareo, Italy), in August 2010, where shore evolution was monitored, even if data quality and quantity aren't ideal in order to feed RUSICA. Simulations of different scenarios of stormy sea in that area evidenced the adequate performance of the model in capturing the main emergent features of the phenomenon in despite of the simplified approach.

  20. Ecological analysis of the distribution and socio-spatial context of homicides in Porto Alegre, Brazil.

    PubMed

    Santos, Simone M; Barcellos, Christovam; Sá Carvalho, Marilia

    2006-03-01

    Over the last decade, the number of homicides in Porto Alegre has increased to the point where external causes are now the main group of causes of death in the 5-34-year age group. Preventing these deaths depends fundamentally on identifying factors related to excess violence in population groups. The overall aim of this study is to analyse the spatial distribution of homicide victims by place of residence in Porto Alegre, the capital of the southernmost Brazilian State of Rio Grande do Sul, in 1996, in order to identify and understand the socio-spatial context. Demographic and socioeconomic indicators based on the 1991 census and 1996 population count were used to build a multivariate classification characterizing the 1851 census tracts. Homicides occurring in 1996 were located using the municipality's Geographic Information System. Four socioeconomic groups were identified, mainly differentiated by housing indicators. Small areas on the urban periphery in which slums (favelas) are concentrated presented higher homicide rates. Homicide rates were lower in the two groups with higher income and educational level. The second step was to classify the census tracts according to the homicide indicator. In this case, areas were differentiated by the number of household inhabitants per room, income, schooling, and median age. We conclude that the multivariate socioeconomic classification presents a limited capacity to identify populations exposed to homicides, suggesting that socioeconomic conditions themselves do not determine violent behaviour. On the other hand, the spatial methods allowed us to identify small areas where deaths are concentrated and whose populations should receive special attention in planning measures to prevent violent deaths.

  1. Profile of drug utilization in the elderly living in Porto Alegre, Brazil

    PubMed Central

    Tôrres Faggiani, Fabiana; Schroeter, Guilherme; Luz Pacheco, Sandro; Araújo De Souza, Antônio Carlos; Werlang, Maria Cristina; Attílio De Carli, Geraldo; Bueno Morrone, Fernanda

    The elderly population is one of the most rapidly increasing populations in the world. Physiological alterations induced by the aging process make these individuals more susceptible to chronic diseases and, consequently, to increased drug utilization. Objective To describe the profile of drug utilization in the elderly living in Porto Alegre, RS, Brazil. Methods An observational and cross-sectional population-based study to investigate the characteristics of the population, sources of information and types of drugs used by the elderly was performed. Four hundred and eighty patients were recruited from data supplied by the City Hall of Porto Alegre. The elderly were interviewed individually during the period from January to May 2006 by trained interviewers. A validated pharmacotherapy questionnaire was used for data collection and data were tabulated and analyzed by the SPSS 11.5 computer program. Results Of the 480 patients interviewed, 13.8% did not use any medication. Cardiovascular system drugs represented the pharmacological class most used by the elderly (64.0%). When ill, 71.9% of these individuals visited the doctor, while 36.9% self-medicated. For the majority (50.2%), drugs were identified by their labels. Only 41.2% of the elderly understood medical prescriptions and 68.3% of the patients studied obtained the necessary information for the appropriate use of therapy from their doctors. Conclusions The present study suggests that a pharmaceutical care program for the treatment, prevention, and use of medications may provide a higher efficiency to elderly drug therapy. PMID:25170356

  2. Biological and environmental factors associated with risk of schistosomiasis mansoni transmission in Porto de Galinhas, Pernambuco State, Brazil.

    PubMed

    Leal Neto, Onicio Batista; Gomes, Elainne Christine de Souza; Oliveira Junior, Fernando José Moreira de; Andrade, Rafael; Reis, Diego Leandro; Souza-Santos, Reinaldo; Bocanegra, Silvana; Barbosa, Constança Simões

    2013-02-01

    Schistosomiasis has expanded to the coast of Pernambuco State, Brazil, where there are frequent reports of Biomphalaria glabrata snails and human cases of the disease. This study analyzes factors related to schistosomiasis transmission risk in Porto de Galinhas. A one-year malacological survey was conducted to identify biological, abiotic, and environmental factors related to the host snail breeding sites. Data analysis used Excel 2010, GTM Pro, and ArcGis 10. A total of 11,012 B. glabrata snails were captured in 36 breeding sites, and 11 schistosomiasis transmission foci were identified. A negative correlation was found between breeding site temperature and snail density and infection rate, and a positive correlation with pH and salinity. The rainy season showed a positive correlation with snail density and infection rate. The study emphasizes the factors involved in the maintenance of schistosomiasis breeding sites, in light of persistence of this disease in Porto de Galinhas for more than 10 years.

  3. Estimated atmospheric emissions from biodiesel and characterization of pollutants in the metropolitan area of Porto Alegre-RS.

    PubMed

    Teixeira, Elba C; Mattiuzi, Camila D P; Feltes, Sabrina; Wiegand, Flavio; Santana, Eduardo R R

    2012-09-01

    The purpose of the present study was to estimate emissions of some pollutants (CO, NO(X), HC, SO(X), and PM) in diesel fleet due to the addition of biodiesel in different blends, as well as to assess atmospheric pollutant concentrations in the metropolitan area of Porto Alegre (MAPA). The methodology was based on inventories from mobile sources based on US EPA's technical report. Regarding air quality the following parameters were determined: PM(10), PM(2.5), CO, NO(X), O(3), SO(2), HC and PAHs. The results showed a decrease for emissions PM, CO, and HC, and a slight increase for NO(X). The characterization of atmospheric pollutants in the metropolitan area of Porto Alegre showed that they are influenced by mobile sources, particularly diesel vehicles. The diagnosis of ratios analysis that was applied to facilitate the identification of sources of PAHs, indicated an influence of diesel oil.

  4. An unusual cause of progressive cyanosis post Fontan operation: congenital extra-hepatic porto-systemic shunt.

    PubMed

    Layangool, Thanarat; Kojaranjit, Vichao; Promphan, Worakan; Kirawittaya, Tawatchai; Sangtawesin, Chaisit; Prachasilchai, Pimpak

    2014-06-01

    To report an unusual case of progressive cyanosis post Fontan operation due to porto-systemic venous shunt and the result of its treatment. A patient with diagnosis of progressive cyanosis post Fontan operation from porto-systemic venous shunt at QSNICH RESULTS: This is a case of twelve years old girl, who had diagnosis of situs solitus, levocardia, atrio-ventricular concordant, ventriculo-arterial concordant, hypoplastic right ventricle with large ventricular septal defect. She had pulmonary artery banding at 4 months of age followed by a non-fenestrated extra-cardiac conduit Fontan performed at 7 years and 7 months of age. During the first year of post operation, her systemic oxygen saturation (SpO2) was 93-94% after which it decreased to 87%, 84%, 75% at 1.5, 2.5 and 3 years after surgery, respectively. Clinically she also had progressive dyspnea on exertion. Diffuse pulmonary arterio-venous malformation was demonstrated by contrast echocardiogram during cardiac catheterization. Cardiac magnetic resonance angiography showed abnormal extra-hepatic portal vein to inferior vena cava shunt. After balloon test occlusion in the cath lab, which showed no change in the portal venous pressure, complete occlusion of this porto-systemic venous shunt was performed by using Amplatzer Vascular Plug II. Her systemic oxygen saturation increased to 83% with functional class I at one-year post occlusion. The present report an unusual case of progressive cyanosis post Fontan operation due to pulmonary arteriovenous malformation, which was secondary to congenital extra-hepatic porto-systemic shunt. The venous blood from the intestinal and splenic veins was partially bypassing the liver into inferior vena cava. The patient's clinical condition and SpO2 improved after transcatheter occlusion of the shunt with the device.

  5. SEASONAL DISTRIBUTION OF MALARIA VECTORS (DIPTERA: CULICIDAE) IN RURAL LOCALITIES OF PORTO VELHO, RONDÔNIA, BRAZILIAN AMAZON

    PubMed Central

    GIL, Luiz Herman Soares; RODRIGUES, Moreno de Souza; de LIMA, Alzemar Alves; KATSURAGAWA, Tony Hiroshi

    2015-01-01

    We conducted a survey of the malaria vectors in an area where a power line had been constructed, between the municipalities of Porto Velho and Rio Branco, in the states of Rondônia and Acre, respectively. The present paper relates to the results of the survey of Anopheles fauna conducted in the state of Rondônia. Mosquito field collections were performed in six villages along the federal highway BR 364 in the municipality of Porto Velho, namely Porto Velho, Jaci Paraná, Mutum Paraná, Vila Abunã, Vista Alegre do Abunã, and Extrema. Mosquito captures were performed at three distinct sites in each locality during the months of February, July, and October 2011 using a protected human-landing catch method; outdoor and indoor captures were conducted simultaneously at each site for six hours. In the six sampled areas, we captured 2,185 mosquitoes belonging to seven Anopheles species. Of these specimens, 95.1% consisted of Anopheles darlingi, 1.8% An. triannulatus l.s., 1.7% An. deaneorum, 0.8% An. konderi l.s., 0.4 An. braziliensis, 0.1% An. albitarsis l.s., and 0.1% An. benarrochi. An. darlingi was the only species found in all localities; the remaining species occurred in sites with specific characteristics. PMID:26200969

  6. Environmental lead poisoning among children in Porto Alegre state, Southern Brazil.

    PubMed

    Ferron, Mariana Maleronka; Lima, André Klafke de; Saldiva, Paulo Hilário Nascimento; Gouveia, Nelson

    2012-04-01

    To estimate the prevalence of lead poisoning in children and to identify associated factors, as well as possible local sources of contamination. A cross-sectional prevalence study conducted in 2006 with a random sample of 97 children age zero to five years from a neighborhood in Porto Alegre, Southern Brazil. Blood lead levels were measured and a questionnaire administered to collect information on sociodemographics, recycling and dwelling. A preliminary environmental evaluation was carried out with direct analysis of soil and indirect analysis of air pollution with bioindicators to identify possible sources of contamination. To analyze lead concentrations from the different collection sites, for each type of material studied, ANOVA was performed with a Brown-Forsythe adjustment for heteroscedasticity and with Dunnett's T3 procedure for multiple comparisons of unequal variances. Blood lead levels > 10.0 µg/dL was found in 16.5% of children. Recycling of waste at home, low father's education level, and increased age of children were associated with increase blood lead levels. High lead levels were found in soil, and there was little indication of lead air pollution. A high prevalence of lead poisoning was identified, and the potential sources of contamination in this community appear related to waste recylcing activities. Studies should be conducted with other populations of Brazilian children and evaluate potential sources of local and general contamination, to accurately characterize this issue in Brazil.

  7. The origin of fluoride in the granitic aquifer of Porto Alegre, Southern Brazil

    NASA Astrophysics Data System (ADS)

    Viero, A. P.; Roisenberg, C.; Roisenberg, A.; Vigo, A.

    2009-02-01

    The Porto Alegre region, Southern Brazil, comprises a fractured aquifer system constituted by pre-Cambrian granitic and gneissic rocks, and a porous aquifer system formed by Cenozoic muddy-sandy to sandy sediments. A model is presented for the origin of the fluoride in the groundwater of the fractured aquifer system, based on ionic interrelations, a statistical analysis of physicochemical parameters and geochemical modeling. The fluoride is present at levels of up to 6.13 mg/L in groundwater and it arises due to the dissolution of secondary fluorite filling fractures in the granitic and gneissic rocks. The dissolution of fluorite occurs at the same time as calcite and dolomite solubilization. The statistical analysis identified three chemically distinct groups (named 1, 2 and 3) and two subgroups (1A and 1B) of groundwater in the fractured aquifer. The most significant differences between these groups are the different concentration ranges of fluoride, calcium, bicarbonate, magnesium, total dissolved solids and chloride and pH values, as well as the correlations between them. The compositional evolution of each groundwater group is governed mainly by how much high-salinity groundwater from the porous aquifer system is mixed with them and the different thermodynamic equilibrium conditions of calcite, dolomite and fluorite.

  8. Trauma, causality and time: some reflections: Epistemology Study Group, Porto Alegre Psychoanalytical Society.

    PubMed

    Mondrzak, Viviane Sprinz; Duarte, Aldo Luiz; Lewkowicz, Alice Becker; Kauffmann, Anna Luiza; Iankilevich, Eneida; Brodacz, Gisha; Soares, Gustavo P; Pellanda, Luiz Ernesto

    2007-04-01

    Based on the studies and discussions of the Epistemology Study Group of the Porto Alegre Psychoanalytical Society, the authors aim to connect the notions of psychical determinism with the concept of trauma and temporality, from a perspective of the mind as a complex system. Following consideration of the concept of psychical determinism, they attempt to expand the discussion on causality. They propose that trauma be situated in the body of contemporary psychoanalysis, where emotional experience is favoured over factual events, leading to the need to rethink the concept of trauma and its usefulness. In the same way, in the light of recent developments, the authors revisit the Freudian etiologic equation, with a proposal that an i, for imaginary factor, be included, corresponding to an element of complexity. The question of temporality, connected with trauma and the therapeutic action of psychoanalysis, is approached within a vision of irreversible time, characteristic of complex systems, far-from-equilibrium-which is how the authors understand psychical functioning.

  9. Improvement in the removal of micropollutants at Porto Marghera industrial wastewaters treatment plant by MBR technology.

    PubMed

    Cattaneo, S; Marciano, F; Masotti, L; Vecchiato, G; Verlicchi, P; Zaffaroni, C

    2008-01-01

    This paper deals with the case of one of the most important industrial application of membrane technology in the world: the upgrading of the main industrial wastewater treatment plant (WWTP) of the petrochemical site of Porto Marghera, Northern Italy, completed on December 2005 and tested on September 2006. It describes the principal interventions of the plant upgrading and it discusses the removal obtained during the test periods for conventional pollutants as well as for micropollutants. The plant upgrading consisted of a series of improvements of the existing industrial WWTP, in order to increase the removal efficiency of the total suspended solids and the associate removal of ten micropollutant compounds, the so called forbidden substances. The most important intervention was the conversion of the existing activated sludge section into a membrane biological reactor, in order to guarantee adherence to the severe limits imposed by the special law issued to protect the Venice Lagoon, with particular reference to the mentioned 10 forbidden compounds. The experimental results and the numerous test-runs conducted confirmed the respect of the legal limits for the pollutants in the final effluent as well of the required removal rates for the different parameters. Therefore, the upgraded treatment plant was declared agreeing with the approved design. IWA Publishing 2008.

  10. Groundwater flow in the Venice lagoon and remediation of the Porto Marghera industrial area (Italy)

    NASA Astrophysics Data System (ADS)

    Beretta, Giovanni Pietro; Terrenghi, Jacopo

    2017-05-01

    This study aims to determine the groundwater flow in a large area of the Venice (northeast Italy) lagoon that is under great anthropogenic pressure, which is influencing the regional flow in the surficial aquifer (about 30 m depth). The area presents several elements that condition the groundwater flow: extraction by means of drainage pumps and wells; tidal fluctuation; impermeable barriers that define part of the coastline, rivers and artificial channels; precipitation; recharge, etc. All the elements were studied separately, and then they were brought together in a numerical groundwater flow model to estimate the impact of each one. Identification of the impact of each element will help to optimise the characteristics of the Porto Marghera remediation systems. Longstanding industrial activity has had a strong impact on the soil and groundwater quality, and expensive and complex emergency remediation measures in problematic locations have been undertaken to ensure the continuity of industrial and maritime activities. The land reclamation and remediation works withdraw 56-74% of the water budget, while recharge from the river accounts for about 21-48% of the input. Only 21-42% of groundwater in the modelled area is derived from natural recharge sources, untouched by human activity. The drop of the piezometric level due to the realization of the upgradient impermeable barrier can be counteracted with the reduction of the pumping rate of the remediation systems.

  11. Groundwater flow in the Venice lagoon and remediation of the Porto Marghera industrial area (Italy)

    NASA Astrophysics Data System (ADS)

    Beretta, Giovanni Pietro; Terrenghi, Jacopo

    2016-12-01

    This study aims to determine the groundwater flow in a large area of the Venice (northeast Italy) lagoon that is under great anthropogenic pressure, which is influencing the regional flow in the surficial aquifer (about 30 m depth). The area presents several elements that condition the groundwater flow: extraction by means of drainage pumps and wells; tidal fluctuation; impermeable barriers that define part of the coastline, rivers and artificial channels; precipitation; recharge, etc. All the elements were studied separately, and then they were brought together in a numerical groundwater flow model to estimate the impact of each one. Identification of the impact of each element will help to optimise the characteristics of the Porto Marghera remediation systems. Longstanding industrial activity has had a strong impact on the soil and groundwater quality, and expensive and complex emergency remediation measures in problematic locations have been undertaken to ensure the continuity of industrial and maritime activities. The land reclamation and remediation works withdraw 56-74% of the water budget, while recharge from the river accounts for about 21-48% of the input. Only 21-42% of groundwater in the modelled area is derived from natural recharge sources, untouched by human activity. The drop of the piezometric level due to the realization of the upgradient impermeable barrier can be counteracted with the reduction of the pumping rate of the remediation systems.

  12. [An outbreak of acute schistosomiasis at Porto de Galinhas beach, Pernambuco, Brazil].

    PubMed

    Barbosa, C S; Domingues, A L; Abath, F; Montenegro, S M; Guida, U; Carneiro, J; Tabosa, B; Moraes, C N; Spinelli, V

    2001-01-01

    We recently confirmed several cases of acute schistosomiasis in Porto de Galinhas beach, Northeast Brazil. A total of 662 patients were diagnosed by parasitological and clinical examinations. The infection likely occurred during the September 7 national holiday, when heavy rainfall flooded the Ipojuca River and people were infected when the water covered their yards. Families were continuously exposed to infection for a period of three weeks until the water had completely dried up. Previous investigation suggests that snail vectors were introduced as a result of landfill in marshy areas. The swamp-flooding of such areas facilitated the emergence of slums surrounded by snail breeding sites. Heavy rainfall caused open-air sewage ditches to overflow, allowing for infection of snails by Schistosoma mansoni. Thus, continuous floods were responsible for the spread of human infection. Clinical and laboratory results identified 62% of acute cases of S. mansoni. Complementary studies are being conducted to define the impact and epidemiological meaning of the acute schistosomiasis outbreak.

  13. [Mapping harm reduction programs in Greater Metropolitan Porto Alegre, Rio Grande do Sul State, Brazil].

    PubMed

    Nardi, Henrique Caetano; Rigoni, Rafaela de Quadros

    2009-02-01

    This study mapped and described 11 harm reduction interventions/programs in Greater Metropolitan Porto Alegre, Rio Grande do Sul State, Brazil, in 2004-2006. Mapping was based on interviews and analysis of available documents and comparison with a previous study with data from 2003. We aimed to discuss the programs' sustainability (political, financial, and administrative) and operational characteristics, based on the following categories: type of links in the program or intervention; forms of inclusion in the municipalities; background, financing; typical activities; team hiring practices; volunteer work, if any; resources (human and financial); partnerships; municipal legislation, if any; and participation in forums for political representation. Despite the diversity of links and organizational formats, there were some common characteristics: precarious professional status; dependence on volunteer work to implement activities; influence of turnover in Municipal and State administration on the continuity of projects and partnerships, as well as on the maintenance of human and financial resources. We conclude that such factors lead to lack of continuity in the services provided to the target population.

  14. Identification, antimicrobial resistance and genotypic characterization of Enterococcus spp. isolated in Porto Alegre, Brazil

    PubMed Central

    Bender, Eduardo André; de Freitas, Ana Lúcia Peixoto; Reiter, Keli Cristine; Lutz, Larissa; Barth, Afonso Luís

    2009-01-01

    In the past two decades the members of the genus Enterococcus have emerged as important nosocomial pathogens worldwide. In the present study, we evaluated the antimicrobial resistance and genotypic characteristics of 203 Enterococcus spp. recovered from different clinical sources from two hospitals in Porto Alegre, Rio Grande do Sul, Brazil. The species were identified by conventional biochemical tests and by an automated system. The genetic diversity of E. faecalis presenting high-level aminoglycoside resistance (HLAR) was assessed by pulsed-field gel electrophoresis of chromosomal DNA after SmaI digestion. The E. faecalis was the most frequent specie (93.6%), followed by E. faecium (4.4%). The antimicrobial resistance profile was: 2.5% to ampicillin, 0.5% to vancomycin, 0.5% teicoplanin, 33% to chloramphenicol, 2% to nitrofurantoin, 66.1% to erythromycin, 66.5% to tetracycline, 24.6% to rifampicin, 30% to ciprofloxacin and 87.2% to quinupristin-dalfopristin. A total of 10.3% of the isolates proved to be HLAR to both gentamicin and streptomycin (HLR-ST/GE), with 23.6% resistant only to gentamicin (HLR-GE) and 37.4% only to streptomycin (HLR-ST). One predominant clonal group was found among E. faecalis HLR-GE/ST. The prevalence of resistance among beta-lactam antibiotics and glycopeptides was very low. However, in this study there was an increased number of HLR Enterococcus which may be spreading intra and inter-hospital. PMID:24031416

  15. Indoor pollutant exposure among children with and without asthma in Porto, Portugal, during the cold season.

    PubMed

    Madureira, Joana; Paciência, Inês; Cavaleiro-Rufo, João; de Oliveira Fernandes, Eduardo

    2016-10-01

    Considering the time spent in enclosed spaces, indoor air pollutants are of major interest because of its possible impact on health. However, to date, few studies have analysed the air concentrations of a large set of indoor pollutants of respiratory health relevance in dwellings, particularly in Portugal. This study aimed to measure the concentrations of air pollutants that are present in residential buildings and to investigate whether some clustering pattern of indoor air pollutants exists in the dwellings of children with (case group) and without asthma (control group). Measurements were taken in 30 and 38 dwellings of asthmatic and non-asthmatic schoolchildren, respectively, located in the city of Porto, Portugal, during the cold season (October 2012-April 2013), to assess the concentrations of 12 volatile organic compounds (VOC), aldehydes, PM2.5, PM10, bacteria and fungi. Toluene, d-limonene, formaldehyde, PM2.5, bacteria and fungi are widely present in dwellings, sometimes in relatively high concentrations in reference to WHO guideline values. Moreover, concentrations of CO2 exceeding 1000 ppm were often encountered, indicating that 70 % of all dwellings had poor ventilation (<4 L/s person). While exposures to common dwelling indoor pollutants are similar for schoolchildren with and without asthma, except for d-limonene levels, the identification and control of VOC and PM sources is important and prudent, especially for vulnerable individuals.

  16. Quantitative risk assessment for human salmonellosis through the consumption of pork sausage in Porto Alegre, Brazil.

    PubMed

    Mürmann, Lisandra; Corbellini, Luis Gustavo; Collor, Alexandre Ávila; Cardoso, Marisa

    2011-04-01

    A quantitative microbiology risk assessment was conducted to evaluate the risk of Salmonella infection to consumers of fresh pork sausages prepared at barbecues in Porto Alegre, Brazil. For the analysis, a prevalence of 24.4% positive pork sausages with a level of contamination between 0.03 and 460 CFU g(-1) was assumed. Data related to frequency and habits of consumption were obtained by a questionnaire survey given to 424 people. A second-order Monte Carlo simulation separating the uncertain parameter of cooking time from the variable parameters was run. Of the people interviewed, 87.5% consumed pork sausage, and 85.4% ate it at barbecues. The average risk of salmonellosis per barbecue at a minimum cooking time of 15.6 min (worst-case scenario) was 6.24 × 10(-4), and the risk assessed per month was 1.61 × 10(-3). Cooking for 19 min would fully inactivate Salmonella in 99.9% of the cases. At this cooking time, the sausage reached a mean internal temperature of 75.7°C. The results of the quantitative microbiology risk assessment revealed that the consumption of fresh pork sausage is safe when cooking time is approximately 19 min, whereas undercooked pork sausage may represent a nonnegligible health risk for consumers.

  17. Comparison of adipocere formation in four soil types of the Porto (Portugal) district.

    PubMed

    Durães, Nuno; Cortez, Débora; Algarra, Manuel; Sánchez, Francisco G; Rodríguez-Borges, José E; Bobos, Iulius; da Silva, Joaquim C G Esteves

    2010-02-25

    Four typical soils of the Porto (Portugal) area were characterized and used to study the decomposition of buried pieces of pork meat under controlled laboratory experiments (an 8 month experiment with a relatively high soil moisture and a 1 month experiment with relatively low soil moisture). The soils types were: organic, sandy, gravel and clay-gravel soils. Soils were characterized for their grain size distribution, pH, water content, organic matter percentage and mineral composition. Four free fatty acids (myristic, palmitic, oleic and stearic) were analysed (using a methodology based on an extraction step followed by a derivatization reaction and high performance liquid chromatography analysis) in soil samples as a sign of adipocere formation. The direct sensorial analysis of the buried sample residues and the free fatty acids profiles of the sampled soils showed that sandy and clay-gravel soils (in a low moisture environment) slowed the normal decomposition process promoting the formation of adipocere. Nevertheless, this apparent soil effect is indirect and a consequence of the different water retention and permeability of the soils. Thus, the water content of the soils is a crucial factor for adipocere formation.

  18. Distribution of hemoglobin phenotypes in four different districts of Porto Velho, Rondônia, Brazil.

    PubMed

    Andrade-Casseb, A; Krauze, A; Lafontaine, R M; Tada, M S; Silva, W A; Simões, A L; Engracia, V

    2008-10-01

    Hemoglobin profile studies have been carried out in four samples from different districts of Porto Velho (Rondônia State) in the western Amazonian region of Brazil: Candelária, Bate Estaca, Hemeron (at the State Blood Bank), and São Carlos. Samples from 337 unrelated individuals were collected during medical and paramedical team visits by professionals from the Instituto de Pesquisa em Patologia Tropical and the Centro de Pesquisa em Patologias Tropicais (both research institutes in tropical diseases). The aim of this study is to assess the frequency of alleles in the hemoglobin system, mainly alleles HB*A, *S, and *E. The overall phenotype frequencies were HB A,S = 0.025, HB A,E = 0.006, and HB A,A = 0.969. Samples from the blood bank subjects and samples from the homogeneous areas of São Carlos and Candelária plus Bate Estaca have a chi-square of heterogeneity of 6.383 (p = 0.041) and 8.406 (p = 0.015), respectively. The allele frequencies (HB*A = 0.984, HB*S = 0.012, and HB*E = 0.003) do not significantly differ from frequencies found in other Brazilian regions.

  19. Assessment of future extreme climate events over the Porto wine Region

    NASA Astrophysics Data System (ADS)

    Viceto, Carolina; Cardoso, Susana; Marta-Almeida, Martinho; Gorodetskaya, Irina; Rocha, Alfredo

    2017-04-01

    The Douro Demarcated Region (DDR) is a wine region, in the northern Portugal, recognized for the Porto wine, which is responsible for more than 60% of the total value of national wine exportations. Since the viticulture is highly dependent on weather/climate patterns, the global warming is expected to affect the areas suitable to the growth of a certain variety of grape, its production and quality. This highlights the need of regional studies that assess the future climate changes effects in the vineyard, which might allow an early adjustment. We explore future climate change in the DDR region using a high-resolution regional climate model for Weather Research and Forecasting (WRF) forced by the Max Planck Institute Earth System Model - low resolution (MPI-ESM-LR). Two future periods have been simulated using the emission scenario RCP8.5 - for the mid- (2046-2065) and late 21st century (2081-2100) - and compared to a reference period (1986-2005). The RCP8.5 is a "baseline" scenario without any climate mitigation and corresponds to the pathway with the highest greenhouse gas emissions compared to other scenarios developed by the Intergovernmental Panel for Climate Change. Our regional WRF implementation uses three online-nested domains with increasing resolution at a downscaling ratio of three. The coarser domain of 81-km resolution covers part of the North Atlantic Ocean and most of the Europe. The innermost 9-km horizontal resolution domain includes the Iberian Peninsula, a portion of Northern Africa and the adjacent part of the Atlantic Ocean and Mediterranean Sea. Our study uses this 9-km resolution domain and focuses on a confined area, which comprises the DDR. Such dynamical downscaling approach gives an advantage to assess climate effects on the DDR region, where the high horizontal resolution allows including effects of the oceanic coastline, local riverbeds and complex topography. The climatology of the DDR region determines the more suitable wine variety

  20. Schistosomiasis transmission and environmental change: a spatio-temporal analysis in Porto de Galinhas, Pernambuco - Brazil

    PubMed Central

    2012-01-01

    Background In Brazil, schistosomiasis mansoni infection is an endemic disease that mainly affects the country’s rural populations who carry out domestic and social activities in rivers and water accumulations that provide shelter for the snails of the disease. The process of rural migration to urban centers and the disorderly occupation of natural environments by these populations from endemic areas have favored expansion of schistosomiasis to locations that had been considered to be disease-free. Based on environmental changes that have occurred in consequent to an occupation and urbanization process in the locality of Porto de Galinhas, the present study sought to identify the relationship between those chances, measure by remote-sensing techniques, and establish a new endemic area for schistosomiasis on the coast of Pernambuco State - Brazil. Methods To gather prevalence data, two parasitological census surveys were conducted (2000 and 2010) using the Kato-Katz technique. Two malacological surveys were also conducted in the same years in order to define the density and infection rate of the intermediate host. Based on these data, spatial analyses were done, resulting in maps of the risk of disease transmission. To ascertain the environmental changes that have occurred at the locality, images from the QuickBird satellite were analyzed, thus resulting in land use maps. Results Over this 10-year period, the foci of schistosomiasis became more concentrated in the Salinas district. This area was considered to be at the greatest risk of schistosomiasis transmission and had the highest prevalence rates over this period. The study illustrated that this was the area most affected by the environmental changes resulting from the disorderly urbanization process, which gave rise to unsanitary environments that favored the establishment and maintenance of foci of schistosomiasis transmission, thereby consolidating the process of expansion and endemization of this

  1. Indoor air quality in urban nurseries at Porto city: Particulate matter assessment

    NASA Astrophysics Data System (ADS)

    Branco, P. T. B. S.; Alvim-Ferraz, M. C. M.; Martins, F. G.; Sousa, S. I. V.

    2014-02-01

    Indoor air quality in nurseries is an interesting case of study mainly due to children's high vulnerability to exposure to air pollution (with special attention to younger ones), and because nursery is the public environment where young children spend most of their time. Particulate matter (PM) constitutes one of the air pollutants with greater interest. In fact, it can cause acute effects on children's health, as well as may contribute to the prevalence of chronic respiratory diseases like asthma. Thus, the main objectives of this study were: i) to evaluate indoor concentrations of particulate matter (PM1, PM2.5, PM10 and PMTotal) on different indoor microenvironments in urban nurseries of Porto city; and ii) to analyse those concentrations according to guidelines and references for indoor air quality and children's health. Indoor PM measurements were performed in several class and lunch rooms in three nurseries on weekdays and weekends. Outdoor PM10 concentrations were also obtained to determine I/O ratios. PM concentrations were often found high in the studied classrooms, especially for the finer fractions, reaching maxima hourly mean concentrations of 145 μg m-3 for PM1 and 158 μg m-3 PM2.5, being often above the limits recommended by WHO, reaching 80% of exceedances for PM2.5, which is concerning in terms of exposure effects on children's health. Mean I/O ratios were always above 1 and most times above 2 showing that indoor sources (re-suspension phenomena due to children's activities, cleaning and cooking) were clearly the main contributors to indoor PM concentrations when compared with the outdoor influence. Though, poor ventilation to outdoors in classrooms affected indoor air quality by increasing the PM accumulation. So, enhancing air renovation rate and performing cleaning activities after the occupancy period could be good practices to reduce PM indoor air concentrations in nurseries and, consequently, to improve children's health and welfare.

  2. Screening for depressive symptoms in older adults in the Family Health Strategy, Porto Alegre, Brazil

    PubMed Central

    Nogueira, Eduardo Lopes; Rubin, Leonardo Librelotto; Giacobbo, Sara de Souza; Gomes, Irenio; Cataldo, Alfredo

    2014-01-01

    OBJECTIVE To analyze the prevalence of depression in older adults and associated factors. METHODS Cross-sectional study using a stratified random sample of 621 individuals aged ≥ 60 from 27 family health teams in Porto Alegre, RS, Southern Brazil, between 2010 and 2012. Community health agents measured depression using the 15-item Geriatric Depression Scale. Scores of ≥ 6 were considered as depression and between 11 and 15 as severe depression. Poisson regression was used to search for independent associations of sociodemographic and self-perceived health with both depression and its severity. RESULTS The prevalence of depression was 30.6% and was significantly higher in women (35.9% women versus 20.9% men, p < 0.001). The variables independently associated with depression were: female gender (PR = 1.4, 95%CI 1.1;1.8); low education, especially illiteracy (PR = 1.8, 95%CI 1.2;2 6); regular self-rated health (OR = 2.2, 95%CI 1.6;3.0); and poor/very poor self-rated health (PR = 4.0, 95%CI 2.9;5.5). Except for education, the strength of association of these factors increases significantly in severe depression. CONCLUSIONS A high prevalence of depression was observed in the evaluations conducted by community health agents, professionals who are not highly specialized. The findings identified using the 15-item Geriatric Depression Scale in this way are similar to those in the literature, with depression more associated with low education, female gender and worse self-rated health. From a primary health care strategic point of view, the findings become still more relevant, indicating that community health agents could play an important role in identifying depression in older adults. PMID:25119932

  3. Splenophrenic portosystemic shunt in dogs with and without portal hypertension: can acquired and congenital porto-caval connections coexist?

    PubMed Central

    Ricciardi, M.

    2016-01-01

    The possible existence of the same pattern of porto-caval connection in dogs having a single congenital portosystemic shunt (CPSS) and in dogs having multiple acquired portosystemic shunt (MAPSS) secondary to portal hypertension (PH) was evaluated. Retrospective evaluation of all CT examinations of patients having portosystemic shunt (PSS) was performed in a 4-year time period. All anomalous porto-caval connections were assessed for anatomical pattern and compared with published veterinary literature. Records of 25 dogs were reviewed. 16 dogs had a single CPSS (CPSS group), and 9 dogs had multiple acquired PSS secondary to PH (APSS group). The splenophrenic shunt pattern was found in 3 dogs of the CPSS group as a single congenital anomaly without PH and in 2 dogs of the APSS group associated with MAPSS and ascites due to different hepatic diseases causing PH. These findings corroborate two hypotheses: 1) Splenophrenic PSS should be considered as a classical CPSS but if this is not sufficient to alleviate a PH developed after birth because of eventual hepatic or portal diseases, in this case ascites and acquired portal collaterals may develop. In this case, MAPSS and CPSS may coexist. 2) The pattern of splenophrenic PSS, classically described among CPSS, may develop as acquired portal collateral in dogs with PH and it should also be included in the category of APSS. These preliminary findings may be helpful in reconsidering the classical haemodynamics of porto-caval diseases, enrich the classification of APSS in dogs and refine the imaging evaluation of patients with PH. PMID:27882305

  4. [The (in)salubrity of prison life and other causes of death in Porto Alegre Prison, 1855-1888].

    PubMed

    Cesar, Tiago da Silva

    2015-01-01

    The article analyzes the flow of penal sensitivities in relation to medical and health care provided to prisoners in Porto Alegre Prison between 1855 and 1888. The internalization and the instrumentalization of concepts such as "humanity" and "civilization," especially by those individuals involved directly or with strong chances of influencing changes pertaining to penal issues, are observed. Indeed, in addition to generating favorable public opinion, the concerns of governing authorities and leading lights led to the development of concrete measures and practices that increased the minimum subsistence offered to the imprisoned class. This process, however, was far from linear and harmonic as witnessed by the diseases and the precariousness of prison life.

  5. Excess mortality and morbidity during the July 2006 heat wave in Porto, Portugal

    NASA Astrophysics Data System (ADS)

    Monteiro, Ana; Carvalho, Vânia; Oliveira, Teresa; Sousa, Carlos

    2013-01-01

    The purpose of this study was to understand the effects of the July 2006 heat wave through the use of the heat index, in mortality (all causes) and morbidity (all causes, respiratory and circulatory diseases) in general, and in people over 74 years and by gender, in Porto. In this paper, the Poisson generalized additive regression model was used to estimate the impact of apparent temperature (heat index) and daily mortality and morbidity during the July 2006 heat wave. Daily mortality, morbidity and heat index were correlated with lags of apparent temperature up to 7 days using Pearson correlation. For a 1°C increase in mean apparent temperature we observed a 2.7 % (95 % CI: 1.7-3.6 %) increase in mortality (all cause), a 1.7 % (95 % CI: 0.6-2.9 %) increase in respiratory morbidity, a 2.2 % (95 % CI: 0.4-4.1 %) increase in respiratory morbidity in women, a 5.4 % (95%CI: 1.1-6.6 %) increase in chronic obstructive pulmonary morbidity, and a 7.5 % (95 % CI: 1.3-14.1 %) increase in chronic obstructive pulmonary morbidity in women, for the entire population. For people ≥ 75 years, our results showed a 3.3 % increase (95 % CI: 1.7-5.0 %) in respiratory morbidity, a 2.7 % (95 % CI: 0.4-5.1 %) increase in respiratory morbidity in men, a 3.9 % (95 %CI: 1.6-6.3 %) increase in respiratory morbidity in women, a 7.0 % (95 % CI: 1.1-13.2 %) in chronic obstructive pulmonary disease, and a 9.0 % (95 % CI: 0.3-18.5 %) in chronic obstructive pulmonary disease in women. The use of heat index in a Mediterranean tempered climate enabled the identification of the effects of the July 2006 heat wave in mortality due to all causes and in respiratory morbidity of the general population, as well as in respiratory morbidity of individuals with more than 74 years of age.

  6. Indoor mite allergens in patients with respiratory allergy living in Porto, Portugal.

    PubMed

    Plácido, J L; Cuesta, C; Delgado, L; da Silva, J P; Miranda, M; Ventas, P; Vaz, M

    1996-09-01

    We investigated the levels of mite allergens (Der p 1, Der f 1, Der 2, and Lep d 1) in dust samples from the homes of 59 patients with asthma, 36 sensitized to house-dust mites (HDM) and 23 to grass pollen (controls), living in Porto, northern Portugal. The relationship between exposure and sensitization to HDM and the influence of housing conditions on mite-allergen levels were also evaluated. Der p 1 (median 9.2 micrograms/g) and Der 2 (4.6 micrograms/g) were the main allergens, while Der f 1 and Lep d 1 levels were always < 1 microgram/g dust and undetectable in 11% and 47% of samples, respectively. All HDM-sensitized asthmatics were exposed to Der p 1 levels > 2 micrograms/g and their homes contained significantly higher levels of Der p 1 (median 12.5 vs 6.4 micrograms/g; P = 0.008) and Der 2 (6.2 vs 3.0 micrograms/g; P = 0.004) when compared to the control group. A significant correlation was observed between the exposure to Der p 1 and the wheal area at skin testing with the Dermatophagoides pteronyssinus (Dp) extract (P = 0.01) as well as with serum specific IgE levels to Dp (P = 0.03). Patients with higher levels of serum specific IgE (> or = 17.5 HRU/ml) were also more frequently exposed to Der p 1 levels > or = 10 micrograms/g (P = 0.002). Old homes, presence of carpets, and signs of dampness were conditions associated with significantly higher levels of mite allergens. In conclusion, we found high levels of Der p 1 and Der 2 particularly in the homes of HDM-sensitized patients and we confirm the relationship between exposure and sensitization to HDM, assessed by both in vivo and in vitro methods. In additional to a favorable outdoor climate, we found in our region housing conditions propitious to mite growth, suggesting that specific geographic characteristics must also be taken into account for the correct planning of mite-avoidance measures.

  7. Architectural patterns in a multistorey mixed carbonate siliciclastic submarine channel, Porto Torres Basin, Miocene, Sardinia, Italy

    NASA Astrophysics Data System (ADS)

    Vigorito, Mario; Murru, Marco; Simone, Lucia

    2006-05-01

    In the Sassari area, the analysis of extensive exposures of the Porto Torres sub-basin fill sequences have facilitated a detailed reconstruction of a complex multistorey mixed carbonate-siliciclastic submarine channel, the Sassari Channel. The exposed sequences, dated as Burdigalian-Serravallian, comprise channel complexes up to 4 km wide and 250-300 m thick fringed by marly sheet deposits. Channels are erosional or mixed erosional-depositional type and show multiple, stacked partly nested channel-fill sequences which relate to different filling phases. Individual channel-fills include sand- to cobble-sized deposits which are locally capped by thin-bedded, intensely bioturbated, hemipelagic marls which are related to temporary abandon of the channel, possibly in relation to sea level rise. Architectural elements recognised at outcrop include distinct mid-channel, margin-levee and overbank complexes as well as sheets and drapes of marly basinal deposits. Channel margins, which are locally characterised by very complex depositional architectures, also include up to 15- to 20-m-high lateral bars. Mid-channel complexes are commonly parallel to concave up stratified and locally exhibit minor order nested channel bodies. These erode, overlap or lie alongside each other and suggest repeated channel thalweg digressions and avulsions. Channel-fill architectures are locally complicated by the presence of megabreccias which include up to a few tens of metres high and hundreds of metres wide displaced and/or tilted blocks. Megabreccias are commonly associated with sand injections and/or minor faults and resulted from channel-margin collapses boosted by tectonics and/or by pore water overpressures generated in horizons hydrologically confined between early-cemented bed packages. Channel-fill sequences consist of carbonate- and siliciclastic-dominated deposits. Carbonate deposits are made up of cobbly to sandy rhodalgal debris and also exhibit 5- to 20-m-thick well

  8. Adult Acne: Prevalence and Portrayal in Primary Healthcare Patients, in the Greater Porto Area, Portugal.

    PubMed

    Semedo, Diogo; Ladeiro, Filipa; Ruivo, Mariana; D'Oliveira, Carlos; De Sousa, Filipa; Gayo, Mariana; Lima, Clara; Magalhães, Frederico; Brandão, Rui; Branco, Maria; Da Silva, Isabel; Batista, Joana; Amado, João; Massa, António; Neves-Amado, João

    2016-09-01

    Introdução: A acne, apesar de caraterística no adolescente, afeta frequentemente o adulto. Em Portugal, não são conhecidos estudos sobre a prevalência da acne no adulto, nomeadamente observada nos grandes centros populacionais. Os objetivos deste estudo foram estimar a prevalência da acne nos utentes dos serviços de cuidados de saúde primários, as suas características, incluindo fatores de risco para início e/ou agravamento, além de coletar informação relacionada com a automedicação e/ou tratamento prescrito. Material e Métodos: Aplicação de questionário e exame físico a amostra composta por adultos entre os 20 - 60 anos de idade que visitaram, em dias aleatórios, cinco centros de saúde da área do Grande Porto. Resultados: Dos 1 055 adultos avaliados, a prevalência estimada de acne foi de 61,5%. Apenas 36,8% dos portadores estavam cientes da sua condição e somente 25% afirmou ter procurado tratamento. Mais de metade dos fumadores (62,3%) apresentavam acne. A zona mais afetada foi a região malar, diferindo da forma adolescente da doença. Discussão: A prevalência encontrada de acne foi mais elevada do que em outros estudos. A acne aparentou estar relacionada com a ingestão calórica aumentada, tabagismo, consumo de leite gordo ou meio gordo, hirsutismo, alopécia e seborreia. Conclusão: No contexto dos cuidados de saúde primários, mais de metade dos adultos eram portadores de acne. Estes números demonstram o quão importante pode ser a prevenção e intervenção pelos profissionais dos cuidados de saúde primários, tanto para a redução de eventuais factores de risco como para a intervenção terapêutica e consequências psicossociais relacionadas com a acne. Palavras-chave: Acne Vulgaris/epidemiologia; Adulto; Cuidados de Saúde Primários; Portugal; Prevalência.

  9. Incidence of hypertension in a prospective cohort study of adults from Porto, Portugal

    PubMed Central

    2012-01-01

    Background During the past 30 years, Portugal has been described as one of the countries with highest median blood pressure levels in Europe, but the incidence of hypertension is unknown. The aim of this study was to estimate the incidence of hypertension, according to socio-demographic characteristics and lifestyles. Methods A population-based cohort of randomly selected dwellers from Porto, Portugal, aged ≥18 years, was assembled in 1999–2003 (EPIPorto study) and 796 hypertension-free individuals (62.6% women) were reassessed after a median of 3.8 years. Hypertension was defined as blood pressure ≥140/90 mmHg and/or antihypertensive drug therapy. Incidence rate ratios (IRR) were estimated using Poisson regression. Results The overall incidence rate was 47.3 [95% confidence interval (95% CI): 40.5-55.5] per 1000 person-years. Among women, the incidence was 43.4 (35.6-53.1) and among men 52.7 (41.3-68.0) per 1000 person-years. The incidence was lower in women up to 60 years and much higher among women above 60 (110.0 vs. 64.4 per 1000 person-years among men, p for age-sex interaction=0.032). Participants with higher education had a lower risk of becoming hypertensive (≥13 years vs. ≤4 years: RR=0.70, 95% CI, 0.46-1.08, p for linear trend <0.001), independently of age and sex. Overweight and obesity were associated with a 1.67-fold and 2.44-fold increased risk of hypertension, respectively, independently of age, sex and education. Conclusions In this urban Portuguese population the incidence rate of hypertension was high, with new cases occurring predominantly among older subjects, the less educated and those with overweight-obesity. Despite recent progresses in blood pressure related outcomes, the risk of hypertension remains higher in Portugal than in other developed countries. PMID:23190867

  10. Risk analysis for occurrences of schistosomiasis in the coastal area of Porto de Galinhas, Pernambuco, Brazil

    PubMed Central

    2014-01-01

    Background Manson’s schistosomiasis continues to be a severe public health problem in Brazil, where thousands of people live under the risk of contracting this parasitosis. In the Northeast of Brazil, schistosomiasis has expanded from rural areas to the coast of Pernambuco State, where the intermediate host is Biomphalaria glabrata snails. This study aims at presenting situational analyses on schistosomiasis at the coastal locality of Porto de Galinhas, Pernambuco, Brazil, by determining the risk factors relating to its occurrence from the epidemiological and spatial perspectives. Methods In order to gather prevalence data, a parasitological census surveys were conducted in 2010 in the light of the Kato-Katz technique. Furthermore, malacological surveys were also conducted in the same years so as to define the density and infection rates of the intermediate host. Lastly, socioeconomic-behavioral survey was also conducted to determine the odds ratio for infection by Schistosoma mansoni. Based on these data, spatial analyses were done, resulting in maps of the risk of disease transmission. To predict the risk of schistosomiasis occurrence, a multivariate logistic regression was performed using R 2.13 software. Results Based on prevalence, malacological and socioeconomic-behavioural surveys, it was identified a prevalence of 15.7% in the investigated population (2,757 individuals). Due to the malacological survey, 36 breeding sites were identified, of which 11 were classified as foci of schistosomiasis transmission since they pointed out snails which were infected by Schistosoma mansoni. Overall, 11,012 snails (Biomphalaria glabrata) were collected. The multivariate regression model identified six explanatory variables of environmental, socioeconomic and demographic nature. Spatial sweep analysis by means of the Bernoulli method identified one statistically significant cluster in Salinas (RR = 2.2; p-value < 0.000), the district with the highest occurrence

  11. Developing Legacy: Health Planning in the Host City of Porto Alegre for the 2014 Football World Cup.

    PubMed

    Witt, Regina Rigatto; Kotlhar, Mauro Kruter; Mesquita, Marilise Oliveira; Lima, Maria Alice Dias da Silva; Marin, Sandra Mara; Day, Carolina Baltar; Bandeira, Andrea Goncalves; Hutton, Alison

    2015-12-01

    To describe the process adopted to identify, classify, and evaluate legacy of health care planning in the host city of Porto Alegre for the Football World Cup 2014. There is an emerging interest in the need to demonstrate a sustainable health legacy from mass gatherings investments. Leaving a public health legacy for future host cities and countries is now an important part of planning for these events. The Ministry of Sports initiated and coordinated the development of projects in the host cities to identify actions, projects, and constructions to be developed to prepare for the World Cup. In Porto Alegre, a common structure was developed by the coordinating team to instruct legacy identification, classification, and evaluation. This structure was based on international documentary analysis (including official reports, policy documents, and web-based resources) and direct communication with recognized experts in the field. Sixteen total legacies were identified for health surveillance (5) and health services (11). They were classified according to the strategic area, organizations involved, dimension, typology, planned or unplanned, tangible or intangible, territorial coverage, and situation prior to the World Cup. Possible impacts were then assessed as positive, negative, and potentiating, and mitigating actions were indicated. The project allowed the identification, classification, and development of health legacy, including risk analysis, surveillance, mitigation measures, and provision of emergency medical care. Although the project intended the development of indicators to measure the identified legacies, evaluation was not possible at the time of publication due to time.

  12. Potential effects of using biodiesel in road-traffic on air quality over the Porto urban area, Portugal

    NASA Astrophysics Data System (ADS)

    Ribeiro, Isabel; Monteiro, Alexandra; Lopes, Myriam

    2016-01-01

    This work aims to assess the impacts of biodiesel blends use in road-traffic on air quality. In this frame, the air quality numerical modelling system WRF-EURAD was applied over Portugal and the Porto urban area, forced by two emission scenarios (including CO, NOx, PM10, PM2.5, NMVOC, formaldehyde, acetaldehyde, acrolein and benzene): a reference scenario, without biofuels, and a scenario where a B20 fuel (20% biodiesel/80% diesel, v/v) is used by the diesel vehicle fleet. Regarding carbonyl compounds, emission scenarios pointed out that B20 fuel can promote an increase of 20% on formaldehyde, acetaldehyde and acrolein emissions, leading to increments on equivalent ozone production. On the other hand, through the air quality modelling exercise, it was verified that the use of B20 helps in controlling air pollution, improving CO and NO2 concentrations in urban airshed in about 20% and 10%, respectively, taking into account a regional simulation grid. However, according to the urban scale simulation, NO2 levels can increase in about 1%, due to the use of B20, over the Porto urban area. For the remaining studied pollutants, namely PM10 and PM2.5, mean concentrations will be reduced all over the territory, however in a negligible amount of <1%.

  13. Transjugular Intrahepatic Porto-Systemic Shunt Placement in a Patient with Left-Lateral Split-Liver Transplant and Mesenterico-Left Portal Vein by Pass Placement

    SciTech Connect

    Miraglia, Roberto Maruzzelli, Luigi; Luca, Angelo

    2011-12-15

    This is a report of a successful placement of a transjugular intrahepatic porto-systemic shunt in a young patient with previous left-lateral, split-liver transplant and mesenterico-left portal vein by pass placement after posttransplant extrahepatic portal vein thrombosis.

  14. Phoenix : Complex Adaptive System of Systems (CASoS) engineering version 1.0.

    SciTech Connect

    Moore, Thomas W.; Quach, Tu-Thach; Detry, Richard Joseph; Conrad, Stephen Hamilton; Kelic, Andjelka; Starks, Shirley J.; Beyeler, Walter Eugene; Brodsky, Nancy S.; Verzi, Stephen J.; Brown, Theresa Jean; Glass, Robert John, Jr.; Sunderland, Daniel J.; Mitchell, Michael David; Ames, Arlo Leroy; Maffitt, S. Louise; Finley, Patrick D.; Russell, Eric Dean; Zagonel, Aldo A.; Reedy, Geoffrey E.; Mitchell, Roger A.; Corbet, Thomas Frank, Jr.; Linebarger, John Michael

    2011-08-01

    Complex Adaptive Systems of Systems, or CASoS, are vastly complex ecological, sociological, economic and/or technical systems which we must understand to design a secure future for the nation and the world. Perturbations/disruptions in CASoS have the potential for far-reaching effects due to pervasive interdependencies and attendant vulnerabilities to cascades in associated systems. Phoenix was initiated to address this high-impact problem space as engineers. Our overarching goals are maximizing security, maximizing health, and minimizing risk. We design interventions, or problem solutions, that influence CASoS to achieve specific aspirations. Through application to real-world problems, Phoenix is evolving the principles and discipline of CASoS Engineering while growing a community of practice and the CASoS engineers to populate it. Both grounded in reality and working to extend our understanding and control of that reality, Phoenix is at the same time a solution within a CASoS and a CASoS itself.

  15. Complex Adaptive Systems of Systems (CASoS) engineering and foundations for global design.

    SciTech Connect

    Brodsky, Nancy S.; Finley, Patrick D.; Beyeler, Walter Eugene; Brown, Theresa Jean; Linebarger, John Michael; Moore, Thomas W.; Glass, Robert John, Jr.; Maffitt, S. Louise; Mitchell, Michael David; Ames, Arlo Leroy

    2012-01-01

    Complex Adaptive Systems of Systems, or CASoS, are vastly complex ecological, sociological, economic and/or technical systems which must be recognized and reckoned with to design a secure future for the nation and the world. Design within CASoS requires the fostering of a new discipline, CASoS Engineering, and the building of capability to support it. Towards this primary objective, we created the Phoenix Pilot as a crucible from which systemization of the new discipline could emerge. Using a wide range of applications, Phoenix has begun building both theoretical foundations and capability for: the integration of Applications to continuously build common understanding and capability; a Framework for defining problems, designing and testing solutions, and actualizing these solutions within the CASoS of interest; and an engineering Environment required for 'the doing' of CASoS Engineering. In a secondary objective, we applied CASoS Engineering principles to begin to build a foundation for design in context of Global CASoS

  16. Complex Adaptive System of Systems (CASoS) Engineering Applications. Version 1.0.

    SciTech Connect

    Linebarger, John Michael; Maffitt, S. Louise; Glass, Robert John, Jr.; Beyeler, Walter Eugene; Brown, Theresa Jean; Ames, Arlo Leroy

    2011-10-01

    Complex Adaptive Systems of Systems, or CASoS, are vastly complex eco-socio-economic-technical systems which we must understand to design a secure future for the nation and the world. Perturbations/disruptions in CASoS have the potential for far-reaching effects due to highly-saturated interdependencies and allied vulnerabilities to cascades in associated systems. The Phoenix initiative approaches this high-impact problem space as engineers, devising interventions (problem solutions) that influence CASoS to achieve specific aspirations. CASoS embody the world's biggest problems and greatest opportunities: applications to real world problems are the driving force of our effort. We are developing engineering theory and practice together to create a discipline that is grounded in reality, extends our understanding of how CASoS behave, and allows us to better control those behaviors. Through application to real-world problems, Phoenix is evolving CASoS Engineering principles while growing a community of practice and the CASoS engineers to populate it.

  17. 15th International Conference on Human Antibodies and Hybridomas. 14-16 April 2010, Tiara Park Atlantico Hotel, Porto, Portugal.

    PubMed

    Kotlan, Beatrix

    2010-11-01

    Antibodies and antibody conjugates are currently one of the largest classes of new drug entities under development. These versatile molecules are being investigated for the treatment of many pathological conditions, such as cancer and infectious, inflammatory and autoimmune diseases. Antibodies can exert biological effects as naked antibodies by themselves, or can be used as delivery agents conjugated with various drugs (e.g., immunoconjugates) and as tools of multistep targeting. Site-specific delivery of therapeutic agents has been the ultimate goal of the pharmaceutical industry, as it has the potential to maximize drug efficiency while minimizing side effects. Antibodies have much potential for this objective. Thus, it is useful to summarize some of the main strategies currently being employed for the development of these diverse therapeutic molecules and to highlight the recent novelties in the field. These goals were the focus of the 15th International Conference on Human Antibodies and Hybridomas, held during 14-16 April 2010 in Porto, Portugal.

  18. Adenovirus, enterovirus and thermotolerant coliforms in recreational waters from Lake Guaíba beaches, Porto Alegre, Brazil.

    PubMed

    Maurer, C P; Simonetti, A B; Staggemeier, R; Rigotto, C; Heinzelmann, L S; Spilki, F R

    2015-12-01

    In the present study, molecular detection of human adenoviruses (HAdV) and enteroviruses (EV) was performed in surface water samples collected from beaches Ipanema and Lami, located on the shores of Lake Guaíba, city of Porto Alegre, RS, southern Brazil. Furthermore, water safety was evaluated by counting thermotolerant coliforms (TC), following local government regulations. A total of 36 samples were collected monthly from six different sites along the beaches. Viral genomes were found in 30 (83.3%) samples. The higher detection rate was observed for HAdV (77.8%), followed by EV (22.2%). Although low concentrations of TC have been found, the occurrence of viral genomes in water samples was frequent and may pose a potential risk of infection for people bathing in these beaches.

  19. Changes in a large regulated tropical river: The Paraná River downstream from the Porto Primavera Dam, Brazil

    NASA Astrophysics Data System (ADS)

    Stevaux, José C.; Martins, Débora P.; Meurer, M.

    2009-12-01

    Dams disturb in the fluvial dynamics by changing the natural cycle of the rivers, interfering with the transport-deposition processes and affecting river ecology. The Brazilian part of the Paraná Basin has the largest hydrometrical power potential of the country with more than 150 hydroelectric power dams that transformed the Paraná River and its tributaries in a succession of lakes. This research aims to analyze the changes in certain fluvial variables in the last natural downstream reach of the Upper Paraná River after closure of the Porto Primavera Dam. Data acquired before and after dam construction showed changes in water discharge, bank erosion, flood pulse, bed load grain size discharge, concentration of suspended load and bedform morphology and size. Those alterations generated changes in river ecology especially on fish reproduction, benthic community, and rotifers variety and density. A review of the obscure regional literature, generally in Portuguese, is also presented.

  20. EDXRF analysis of the Pentecost Triptych from the "São Pedro de Miragaia" church (Porto, Portugal)

    NASA Astrophysics Data System (ADS)

    Roldán, Clodoaldo; Ferrero, José; Juanes, David; Carballo, Jorgelina; Calvo, Ana; Aguiar, Maria

    2013-01-01

    EDXRF spectrometry was used to determine the pigment composition of the Pentecost Triptych, a Flemish masterpiece located at the Church of São Pedro de Miragaia (Porto, Portugal). The triptych was restored at the beginning of the 20th century and presents a great number of zones with repaints and colour alterations that can be observed on the whole of their surface. The identification of the original pigments and restoration pigments was based on their characteristic colour and the correlation between the detected elements and the named "key elements" of ancient pigments (Ca, Fe, Cu, Hg, Pb,…) and modern pigments (Ti, Ba, Cr, Zn, Co, Cd,…). The analysis of the triptych has been carried out in situ by means of portable instrumentation.

  1. Using multiple indices to evaluate scenarios for the remediation of contaminated land: the Porto Marghera (Venice, Italy) contaminated site.

    PubMed

    Critto, Andrea; Agostini, Paola

    2009-09-01

    The management of contaminated sites requires the investigation of different involved aspects (from socioeconomic to risk and technological issues) and the presentation of useful and condensed information to decision makers. For this purpose, indices are more and more recognized as effective and valuable tools. This paper presents specific indices created within the DEcision Support sYstem for REhabilitation of contaminated sites (DESYRE). DESYRE is a software which aids decision making for the rehabilitation of a large contaminated site (i.e., megasite) by the creation and comparison of different rehabilitation alternatives. The software is composed of six modules, each dealing with a specific aspect of the remediation process, ending with the decision module. In this module, scenarios (i.e., suitable solutions for the rehabilitation of the contaminated site including selected land use, socioeconomic benefits, remediation costs, time span, environmental impacts, technology set/s, and residual risk) are created and evaluated by means of suitable indices. Nine indices cover the socioeconomic, risk, technological, cost, time, and environmental impact aspects. Mathematical algorithms are used to calculate these indices by taking into account data collected during the analytical steps of the DESYRE system and elaborated through the support of the spatial analysis, which is embedded in the system. The case study of Porto Marghera, Venice, Italy is presented in order to document the effectiveness of developed indices in evaluating management solutions and presenting options to decision makers. For the purpose of this study, three different scenarios for the remediation of a part of the site of Porto Marghera (approximately 530 ha) are developed and compared. The three scenarios consider the industrial land use and deal with the contamination in soil caused by inorganic and organic compounds. The scenarios mainly differ for the number of the included remediation

  2. [Health care access and receptivity to users in a unit in Porto Alegre, Rio Grande do Sul, Brazil].

    PubMed

    Ramos, Donatela Dourado; Lima, Maria Alice Dias da Silva

    2003-01-01

    This study focuses on users' views of factors influencing quality of care at a health care unit in the city of Porto Alegre, relating to access and receptivity. The data were collected using a semi-structured interview and participatory observation and treated using thematic analysis. The results compare ease and difficulties in geographic, economic, and functional access. Organization of services and professional competency were determinant factors in ease of reception, leading to user satisfaction. Poor reception and unsatisfactory professional performance were identified as difficulties. The study concluded that there is a need to increase the professional staff, train them in receiving users, implement a complementary modality for dental care, open the facility earlier for scheduling appointments, and prioritize care for residents of the catchment area.

  3. Complex Adaptive Special Operations (CASO)

    DTIC Science & Technology

    2007-01-01

    impeded by an organizational command and control superstructure designed to support a centralized decision making process. The four components of...and David. Organizational Survival in the New World: The Intelligent Complex Adaptive System (Burlington, MA: KMCI Press, 2004), 295. 2 Clay, Peter... Behavoir , http://en.wikipedia.org/wiki/flocking_%28behavior%29, accessed 2 December 2006. 54 Possible CASO rules may include: exposure – don’t get

  4. [Porto and the construction of the modern city: the case of Hospital Geral de Santo António in the eighteenth and nineteenth centuries].

    PubMed

    da Silva, Helena

    2014-01-01

    During a period of demographic and urban growth of the city of Porto, the need arose for a new hospital. The Santa Casa da Misericórdia of Porto, in charge of erecting the new health facility, appointed the British architect John Carr to design the project. By means of the analysis of a set of archival sources and sundry literature on the topic, we examine the criteria chosen for the design and construction of Hospital Geral de Santo António and if it fulfilled expectations, becoming a special space in the city. This article opens up a perspective on the study of the development of the city and the creation of this health facility, contributing to the historical trajectory of hospital architecture.

  5. The role of spatial mobility in malaria transmission in the Brazilian Amazon: The case of Porto Velho municipality, Rondônia, Brazil (2010-2012).

    PubMed

    Angelo, Jussara Rafael; Katsuragawa, Tony Hiroshi; Sabroza, Paulo Chagastelles; de Carvalho, Lino Augusto Sander; Silva, Luiz Hildebrando Pereira da; Nobre, Carlos Afonso

    2017-01-01

    This study aims to describe the role of mobility in malaria transmission by discussing recent changes in population movements in the Brazilian Amazon and developing a flow map of disease transmission in this region. This study presents a descriptive analysis using an ecological approach on regional and local scales. The study location was the municipality of Porto Velho, which is the capital of Rondônia state, Brazil. Our dataset was obtained from the official health database, the population census and an environmental database. During 2000-2007 and 2007-2010, the Porto Velho municipality had an annual population growth of 1.42% and 5.07%, respectively. This population growth can be attributed to migration, which was driven by the construction of the Madeira River hydroelectric complex. From 2010 to 2012, 63,899 malaria-positive slides were reported for residents of Porto Velho municipality; 92% of the identified samples were autochthonous, and 8% were allochthonous. The flow map of patients' movements between residential areas and areas of suspected infection showed two patterns of malaria transmission: 1) commuting between residential areas and the Jirau hydropower dam reservoir, and 2) movements between urban areas and farms and resorts in rural areas. It was also observed that areas with greater occurrences of malaria were characterized by a low rate of deforestation. The Porto Velho municipality exhibits high malaria endemicity and plays an important role in disseminating the parasite to other municipalities in the Amazon and even to non-endemic areas of the country. Migration remains an important factor for the occurrence of malaria. However, due to recent changes in human occupation of the Brazilian Amazon, characterized by intense expansion of transportation networks, commuting has also become an important factor in malaria transmission. The magnitude of this change necessitates a new model to explain malaria transmission in the Brazilian Amazon.

  6. Distribution of filamentous fungi causing invasive fungal disease at the Haematological Unit, Hospital de Clínicas de Porto Alegre, Brazil.

    PubMed

    Aquino, Valério Rodrigues; Verçosa, Emanuelle Bergonsi; Falhauber, Gustavo; Lunardi, Luciano Werle; Silla, Lucia; Pasqualotto, Alessandro Comarú

    2010-01-01

    Very limited data are available in the literature to elucidate the aetiology of invasive mould infections in Latin America. Here we report that Aspergillus species caused only half of such cases in a cohort study conducted over 21 months in a university hospital in Porto Alegre, Southern Brazil. Fusarium spp. were the second most prevalent moulds (20.7%), followed by Zygomycetes (13.8%). The importance of obtaining local epidemiological data for adequately guiding empirical antifungal therapy is reinforced.

  7. The role of spatial mobility in malaria transmission in the Brazilian Amazon: The case of Porto Velho municipality, Rondônia, Brazil (2010-2012)

    PubMed Central

    Sabroza, Paulo Chagastelles; de Carvalho, Lino Augusto Sander; Nobre, Carlos Afonso

    2017-01-01

    Background This study aims to describe the role of mobility in malaria transmission by discussing recent changes in population movements in the Brazilian Amazon and developing a flow map of disease transmission in this region. Methodology/Principal findings This study presents a descriptive analysis using an ecological approach on regional and local scales. The study location was the municipality of Porto Velho, which is the capital of Rondônia state, Brazil. Our dataset was obtained from the official health database, the population census and an environmental database. During 2000–2007 and 2007–2010, the Porto Velho municipality had an annual population growth of 1.42% and 5.07%, respectively. This population growth can be attributed to migration, which was driven by the construction of the Madeira River hydroelectric complex. From 2010 to 2012, 63,899 malaria-positive slides were reported for residents of Porto Velho municipality; 92% of the identified samples were autochthonous, and 8% were allochthonous. The flow map of patients' movements between residential areas and areas of suspected infection showed two patterns of malaria transmission: 1) commuting between residential areas and the Jirau hydropower dam reservoir, and 2) movements between urban areas and farms and resorts in rural areas. It was also observed that areas with greater occurrences of malaria were characterized by a low rate of deforestation. Conclusions The Porto Velho municipality exhibits high malaria endemicity and plays an important role in disseminating the parasite to other municipalities in the Amazon and even to non-endemic areas of the country. Migration remains an important factor for the occurrence of malaria. However, due to recent changes in human occupation of the Brazilian Amazon, characterized by intense expansion of transportation networks, commuting has also become an important factor in malaria transmission. The magnitude of this change necessitates a new model to

  8. Long-term monitoring and seasonal analysis of polycyclic aromatic hydrocarbons (PAHs) measured over a decade in the ambient air of Porto, Portugal.

    PubMed

    Albuquerque, M; Coutinho, M; Borrego, C

    2016-02-01

    The present paper reports the analytical results of PAHs concentrations in ambient air obtained in the PM10 and gas-phase, from 2004 to 2014, in Porto, Portugal. As part of a monitoring programme conducted by IDAD - Institute of Environment and Development and supported by the regional municipal solid waste (MSW) management authorities, an extensive database of PAH concentrations in ambient air was collected in Porto's metropolitan area. During this period a total of 201 samples were collected in two sites classified as suburban. Analytical results showed a clear decreasing trend of total PAHs (∑PAH) and benzo[a]pyrene (BaP) levels during the period of study, especially in the first years of monitoring. The average annual concentrations of BaP were, throughout the monitoring period, lower than the target value for the annual average (1 ng m(-3)) defined in the European legislation. PAHs levels showed a strong seasonality, with higher concentrations values during the colder months. The winter/summer ratio of ∑PAH for the eleven years of study was 5, revealing the seasonal variation of PAHs in the studied area. The estimated toxic equivalency factors (TEFs) used to assess the contribution of the carcinogenic potential, confirmed a significant presence of the moderately active carcinogenic BaP and dibenz[ah]anthracene (DahA) in the samples collected in Porto. The ratio values of individual PAHs concentrations were used as diagnostic tool to identify the possible origin of PAH in the ambient air of Porto. Based on diagnostic ratios, it may be concluded that automobile traffic emissions, mainly related to diesel vehicles, were the major contribution of PAH levels in the ambient air, although some others contributions, such as coal and wood combustion, were identified.

  9. Photochemical Pollution Modeling of Ozone at Metropolitan Area of Porto Alegre - RS/Brazil using WRF/Chem

    NASA Astrophysics Data System (ADS)

    Cuchiara, G. C.; Carvalho, J.

    2013-05-01

    One of the main problems related to air pollution in urban areas is caused by photochemical oxidants, particularly troposphere ozone (O3), which is considered a harmful substance. The O3 precursors (carbon monoxide CO, nitrogen oxides NOx and hydrocarbons HCs) are predominantly of anthropogenic origin in these areas, and vehicles are the main emission sources. Due to the increased urbanization and industrial development in recent decades, air pollutant emissions have increased likewise, mainly by mobile sources in the highly urbanized and developed areas, such as the Metropolitan Area of Porto Alegre-RS (MAPA). According to legal regulations implemented in Brazil in 2005, which aimed at increasing the fraction of biofuels in the national energy matrix, 2% biodiesel were supposed to be added to the fuel mixture within three years, and up to 5% after eight years of implementation of these regulations. Our work performs an analysis of surface concentrations for O3, NOx, CO, and HCs through numerical simulations with WRF/Chem (Weather Research and Forecasting model with Chemistry). The model is validated against observational data obtained from the local urban air quality network for the period from January 5 to 9, 2009 (96 hours). One part of the study focused on the comparison of simulated meteorological variables, to observational data from two stations in MAPA. The results showed that the model simulates well the diurnal evolution of pressure and temperature at the surface, but is much less accurate for wind speed. Another part included the evaluation of model results of WRF/Chem for O3 versus observed data at air quality stations Esteio and Porto Alegre. Comparisons between simulated and observed O3 revealed that the model simulates well the evolution of the observed values, but on many occasions the model did not reproduce well the maximum and minimum concentrations. Finally, a preliminary quantitative sensitivity study on the impact of biofuel on the

  10. Groundwater contamination in relation with the increasing urbanization rate in Africa. Case of Cotonou and Porto Novo (Benin).

    NASA Astrophysics Data System (ADS)

    Odeloui, Diane; Celle-Jeanton, Hélène; Huneau, Frédéric; Boukari, Moussa; Alassane, Abdelkarim; Garel, Emilie; Lavastre, Véronique; Bertrand, Guillaume

    2016-04-01

    More than one billion people in the world still have no access to sufficient resources in drinking water (United Nation, 2014). In particular, large cities in Africa have to face several problems: 1) population growth associated with the strongest urbanization rate increase (5% per year) of the world leading to a dramatic increase in good-quality water needs, 2) low levels of solid waste management and sanitation services, 3) insufficient or disconnected water supply services, 4) low knowledge of water resources availabilities. The situation in Benin is a relevant illustration of the problems that Africa has to face to. As many other coastal urban areas in Africa (Showers, 2002; Re et al., 2011), Cotonou and Porto Novo cities have seen a rapid increase of their population as these towns constitute a corridor of transit for the imports and the exports in the nearby countries. Hence, they are very attractive for job hunters, and constitute the administrative centers for the whole country. This rapid population growth amplifies the problem of water supply and may generate serious impacts on groundwater resources: depletion due to overexploitation, salinization due to seawater intrusion and pollution linked to human activities. In order to insure a safe water supply in the context of increasing urbanization and population in the coastal area of Cotonou and Porto Novo, the identification of the main sources of pollution is essential for the implementation of long-term water management procedures. Based on two field campaigns carried out in January-2012 (dry season) and August-2012 (rainy season), hydrochemical analysis have been realized on groundwater sampled from boreholes drilled in the CTA (Continental Terminal Aquifer) and wells dug in the QCA (Quaternary Coastal Aquifer) in order to investigate the origin of salinization and the present time extension of the nitrate contamination. Historical data have also been collected from previous studies in order to

  11. Utility of cone-beam computed tomography in the assessment of the porto-spleno-mesenteric venous system

    PubMed Central

    2016-01-01

    The common diagnostic tools available to evaluate the porto-spleno-mesenteric venous (PSMV) system provide either good hemodynamic information with limited morphological details [e.g., ultrasonography (US)] or excellent tomographic display of the anatomy with limited information about flow patterns [e.g., multidetector computed tomography (MDCT) and magnetic resonance imaging]. Although catheter-directed selective digital subtraction angiography (DSA) can provide excellent information about flow at a high temporal resolution and can generate images at a high spatial resolution, this technique is often limited by a lack of cross-sectional detail. In the assessment of the PSMV system, DSA is also limited by dilution of contrast and motion artefacts. Combining venous phase cone-beam computed tomography (CBCT) with DSA can generate high-quality tomographic data, which allows detailed evaluation of venous tributaries and flow patterns within the splenic, superior mesenteric, and inferior mesenteric venous systems individually. This enables clinicians to better understand the impact of nonobstructive resistance to flow (e.g., as in patients with cirrhosis) and obstructive resistance to flow (e.g., as in patients with thrombosis) within each system and plan treatment accordingly. In this review, we discuss the limitations of common diagnostic methods and the role venous CBCT in combination with DSA can play in assessing the PSMV system. PMID:28123975

  12. Environmental education in the Upper Paraná River floodplain, municipality of Porto Rico (Paraná State), Brazil.

    PubMed

    Obara, A T; Suzuki, H I; Takemoto, R M; Tomanik, A; Corredato-Periotto, T R; Silva-Dias, M A G

    2009-06-01

    Since 2003, researchers, faculty, graduate and undergraduate students from the State University of Maringá have been working alongside teachers from the state and local schools in the municipality of Porto Rico (Paraná State), located on the banks of the Paraná River. Their objective is to outline actions and strategies with the purpose of building methodological paths to insert environmental education into the school curriculum. Based on the action-research methodology, the group has developed the following programs: a) the Continuing Education Program in Environmental Education; b) the Development of Interdisciplinary Projects; c) the Insertion of Information and Communication Technologies (ICTs); and d) the Production of Teaching Materials. The evaluations of the programs indicate that teachers have been able to gradually build a theoretical and methodological basis for environmental education while simultaneously growing into the role of teacher-researchers as they create the conditions to investigate their pedagogical practices, reflect upon them, share experiences, innovate, and make the teaching-learning process more significant. Allied to the advances in educational practices and with the aid of ICTs, the activities developed in the classroom, in the field and in the lab--all of which involve natural and cultural aspects of the region--have contributed to teachers' and students' better understanding of the ecological, cultural, social and economic value of the floodplain, and consequently, of the importance of preservation and management in order to maintain local biodiversity.

  13. Drug-resistant tuberculosis in subjects included in the Second National Survey on Antituberculosis Drug Resistance in Porto Alegre, Brazil*, **

    PubMed Central

    Micheletti, Vania Celina Dezoti; Moreira, José da Silva; Ribeiro, Marta Osório; Kritski, Afranio Lineu; Braga, José Ueleres

    2014-01-01

    OBJECTIVE: To describe the prevalence of multidrug-resistant tuberculosis (MDR-TB) among tuberculosis patients in a major Brazilian city, evaluated via the Second National Survey on Antituberculosis Drug Resistance, as well as the social, demographic, and clinical characteristics of those patients. METHODS: Clinical samples were collected from tuberculosis patients seen between 2006 to 2007 at three hospitals and five primary health care clinics participating in the survey in the city of Porto Alegre, Brazil. The samples were subjected to drug susceptibility testing. The species of mycobacteria was confirmed using biochemical methods. RESULTS: Of the 299 patients included, 221 (73.9%) were men and 77 (27.3%) had a history of tuberculosis. The mean age was 36 years. Of the 252 patients who underwent HIV testing, 66 (26.2%) tested positive. The prevalence of MDR-TB in the sample as a whole was 4.7% (95% CI: 2.3-7.1), whereas it was 2.2% (95% CI: 0.3-4.2) among the new cases of tuberculosis and 12.0% (95% CI: 4.5-19.5) among the patients with a history of tuberculosis treatment. The multivariate analysis showed that a history of tuberculosis and a longer time to diagnosis were both associated with MDR-TB. CONCLUSIONS: If our results are corroborated by other studies conducted in Brazil, a history of tuberculosis treatment and a longer time to diagnosis could be used as predictors of MDR-TB. PMID:24831400

  14. Quantification and mapping of urban fluxes under climate change: Application of WRF-SUEWS model to Greater Porto area (Portugal).

    PubMed

    Rafael, S; Martins, H; Marta-Almeida, M; Sá, E; Coelho, S; Rocha, A; Borrego, C; Lopes, M

    2017-05-01

    Climate change and the growth of urban populations are two of the main challenges facing Europe today. These issues are linked as climate change results in serious challenges for cities. Recent attention has focused on how urban surface-atmosphere exchanges of heat and water will be affected by climate change and the implications for urban planning and sustainability. In this study energy fluxes for Greater Porto area, Portugal, were estimated and the influence of the projected climate change evaluated. To accomplish this, the Weather Research and Forecasting Model (WRF) and the Surface Urban Energy and Water Balance Scheme (SUEWS) were applied for two climatological scenarios: a present (or reference, 1986-2005) scenario and a future scenario (2046-2065), in this case the Representative Concentration Pathway RCP8.5, which reflects the worst set of expectations (with the most onerous impacts). The results show that for the future climate conditions, the incoming shortwave radiation will increase by around 10%, the sensible heat flux around 40% and the net storage heat flux around 35%. In contrast, the latent heat flux will decrease about 20%. The changes in the magnitude of the different fluxes result in an increase of the net all-wave radiation by 15%. The implications of the changes of the energy balance on the meteorological variables are discussed, particularly in terms of temperature and precipitation. Copyright © 2017 Elsevier Inc. All rights reserved.

  15. Analysis of the work of air traffic controllers of the approach control area (APP) of Porto Alegre, Brazil.

    PubMed

    Vargas, C V; Guimarães, L B de M; Sant'Anna, A M O

    2012-01-01

    This article presents a study on the activities of the air traffic controllers of the Approach Control Area (APP) of Porto Alegre, Brazil, in different real scenarios. Based on interviews, questionnaires and the analysis of film of real scenes, the following were identified and analyzed: i) the perceptions of risk and complexity of the different air traffic scenes observed; ii) the cognitive factors (knowledge, strategy and attention dynamics) involved in the task and iii) the perception of the controller's workload. The results showed that the task complexity depends on the weather conditions, the number and type of aircraft in observation and that the controllers perceive the scenes in a similar way irrespective of their time in the profession and the type of control (radar or coordination). Attention is the cognitive factor with the greatest impact on the work and mental demand has the greatest impact on workload followed by time demand. The literature on the controllers work in Brazil is scarce and, therefore, this study aimed to contribute to the understanding of the work in one APP in order to promote future changes in the very problematic Brazilian air traffic system.

  16. [Evaluation of the presence of hygienic and sanitary indicator microorganisms in food served in public schools in Porto Alegre, Brazil].

    PubMed

    de Oliveira, Ana Beatriz Almeida; Capalonga, Roberta; Silveira, Joice Trindade; Tondo, Eduardo Cesar; Cardoso, Marisa Ribeiro de Itapema

    2013-04-01

    The objective of this study was to evaluate the presence of hygienic and sanitary indicator microorganisms in samples of food served in public schools in Porto Alegre. All the food served in the meal of the session visited was analyzed for Escherichia coli, coagulase-positive Staphylococcus, Salmonella sp. and Shigella sp. Of the total of 196 food products analyzed in 120 schools, 4 contained and Escherichia coli score above the permitted level, and 2 contained coagulase-positive Staphylococcus. Neither Shigella nor Salmonella genus were detected. In the majority of schools studied, it was found that food was of an adequate hygienic-sanitary standard. However, only municipal schools had the supervision of a technician responsible for school food. In the state schools, 60% had never been visited by a nutritionist and in these schools several procedures failed to comply with legal requirements. In most of the schools studied, the food served to students was within adequate standards, though the problems detected revealed the need for the implementation of Best Practices in the school environment.

  17. SIXTEEN YEARS OF DERMATOMYCOSIS CAUSED BY Candida spp. IN THE METROPOLITAN AREA OF PORTO ALEGRE, SOUTHERN BRAZIL

    PubMed Central

    HEIDRICH, Daiane; STOPIGLIA, Cheila Denise Ottonelli; MAGAGNIN, Cibele Massotti; DABOIT, Tatiane Caroline; VETTORATO, Gerson; AMARO, Taís Guarienti; SCROFERNEKER, Maria Lúcia

    2016-01-01

    The yeasts of the genus Candida infect skin, nails, and mucous membranes of the gastrointestinal and the genitourinary tract. The aim of this study was to determine the prevalence of dermatomycoses caused by Candida spp., and their etiological aspects in the metropolitan area of Porto Alegre, Brazil. A retrospective study with data obtained from tertiary hospital patients, from 1996 to 2011, was performed. The analyzed parameters were date, age, gender, ethnicity, anatomical region of lesions, and the direct examination results. For all the statistical analyses, a = 0.05 was considered. Among positive results in the direct mycological examination, 12.5% of the total of 4,815 cases were positive for Candida spp. The angular coefficient (B) was -0.7%/ year, showing a decrease over the years. The genus Candida was more prevalent in women (15.9% of women versus 5.84% of men), and in addition, women were older than men (54 versus 47 years old, respectively). There was no difference between ethnic groups. The nails were more affected than the skin, with 80.37% of the infections in the nails (72.9% in fingernails and 7.47% in toenails). Our study corroborates the literature regarding the preference for gender, age, and place of injury. Moreover, we found a decrease in infection over the studied period. PMID:27007557

  18. The body donation program at the Federal University of Health Sciences of Porto Alegre: a successful experience in Brazil.

    PubMed

    da Rocha, Andrea Oxley; Tormes, Diane Alícia; Lehmann, Natassia; Schwab, Rafael Santos; Canto, Raphael Teixeira

    2013-01-01

    The use of dissection to study human anatomy is the foundation for educational excellence among future health professionals, as it offers an ideal opportunity to learn the body's morphology in three dimensions while also providing students with a more humanistic education. The shortage of bodies for dissection, combined with the Brazilian population's lack of knowledge concerning the possibility of voluntarily donating their own bodies, led to the creation of the Body Donation Programs for Education and Research in Anatomy at the Federal University of Health Sciences of Porto Alegre (UFCSPA). The program is based on three pillars: Informing the general public about the program, donor registration, and donation itself. Since the creation of the donor program in 2008, there has been an increase in both the number of donations made during donor's lifetime and the number of bodies received by the university. There has also been a shift in relation to the origin of these bodies, as before the creation of the program most bodies were unclaimed cadavers, while today most of the bodies are sourced from voluntary donations. The initial results regarding the public's acceptance of the possibility of making body donations have been encouraging, as shown by the annual growth in donor registrations. Consequently, the quality and quantity of the material available for educational purposes have greatly improved.

  19. [Trends in hospitalization for primary care-sensitive conditions and associated factors in Porto Alegre, Rio Grande do Sul, Brazil].

    PubMed

    da Costa, Juvenal Soares Dias; Pattussi, Marcos Pascoal; Morimoto, Tissiani; de Arruda, Jocinei Santos; Bratkowski, Gabriela Rodrigues; Sopelsa, Mariani; Fritzen, Janaina Soder; do Canto, Vaneza de Andrade da Fontoura; Marques, Maximiliano Chagas

    2016-04-01

    An ecological study was conducted to analyze trends in hospitalization for primary care-sensitive conditions linking the results to the investments in health and coverage of the Family Health Strategy in Porto Alegre, between 1998 and 2012. The causes of hospitalization for primary care-sensitive conditions were based on the national list provided by the Ministry of Health. The data were obtained from the Hospital Information System of the Unified Health System (SUS). Standardized rates were created and investments increased by 27%, though investments in primary care increased by 83%. The expansion of coverage by the Family Health Strategy was almost fourfold, though it remained below the recommended values. There was no change in the trend of hospitalization for primary care-sensitive conditions. The analysis did not make it possible to establish if patients who were hospitalized for primary care-sensitive conditions had access to the Family Health Strategy or not, suggesting the need to incorporate data of place of origin in the information system. Studies using the Hospital Information System contribute to its enhancement, fomenting the assessment, management and design of health policies.

  20. Community-acquired pneumonia at the Hospital de Clínicas de Porto Alegre: evaluation of a care protocol.

    PubMed

    Mocelin, Clei Angelo; dos Santos, Rodrigo Pires

    2013-01-01

    To assess the adequacy of medical prescriptions for community-acquired pneumonia at the emergency department of the Hospital de Clínicas de Porto Alegre, we conducted a prospective cohort study, from January through April 2011. All patients with suspected pneumonia were selected from the first prescription of antimicrobials held in the emergency room. Patients with a description of pneumonia, community-acquired pneumonia, respiratory infection, or other issues related to community-acquired pneumonia were selected for review. Two-hundred and fifteen patients were studied. Adherence to the hospital care protocol was: 11.2% for the initial recommended tests (chest X-ray and collection of sputum sample), 34.4% for blood cultures, and 92.1% for the antimicrobial choice. Sixty percent of the prescriptions consisted of a combination of drugs, and the association of beta-lactam and macrolide was the most common. The Hospital Infection Control Committee evaluated patients' prescriptions within a median time of 23.5h (IQR 25-75%, 8-24). Negative evaluations accounted for 10% of prescriptions (n=59). Fourteen percent of the patients died during hospitalization. In the multivariate analysis, Pneumonia Severity Index Score and use of ampicillin+sulbactam alone were independently related to in-hospital mortality. There was a high adherence to the hospital's CAP protocol, in relation to antimicrobial choice. Severity score and use of ampicillin+sulbactam alone were independently associated to in-hospital death.

  1. Brazilian mosquito (Diptera: Culicidae) fauna: I. Anopheles species from Porto Velho, Rondônia state, western Amazon, Brazil.

    PubMed

    Morais, Sirlei Antunes; Urbinatti, Paulo Roberto; Sallum, Maria Anice Mureb; Kuniy, Adriana Akemi; Moresco, Gilberto Gilmar; Fernandes, Aristides; Nagaki, Sandra Sayuri; Natal, Delsio

    2012-12-01

    This study contributes to knowledge of Anopheles species, including vectors of Plasmodium from the western Brazilian Amazon in Porto Velho, Rondônia State. The sampling area has undergone substantial environmental changes as a consequence of agricultural and hydroelectric projects, which have caused intensive deforestation and favored habitats for some mosquito species. The purpose of this study was to diagnose the occurrence of anopheline species from collections in three locations along an electric-power transmission line. Each locality was sampled three times from 2010 to 2011. The principal adult mosquitoes captured in Shannon trap were Anopheles darlingi, An. triannulatus, An. nuneztovari l.s., An.gilesi and An. costai. In addition, larvae were collected in ground breeding sites for Anopheles braziliensis, An. triannulatus, An. darlingi, An. deaneorum, An. marajoara, An. peryassui, An. nuneztovari l.s. and An. oswaldoi-konderi. Anopheles darlingi was the most common mosquito in the region. We discuss Culicidae systematics, fauna distribution, and aspects of malaria in altered habitats of the western Amazon.

  2. Drosophilid assemblages at different urbanization levels in the city of Porto Alegre, state of Rio Grande do Sul, southern Brazil.

    PubMed

    Garcia, C F; Hochmüller, C J C; Valente, V L S; Schmitz, H J

    2012-02-01

    The present study analyzed the drosophilid assemblages in different levels of urbanization in the city of Porto Alegre, Rio Grande do Sul, Brazil. Collections were carried out in 2008 in three different environments: a highly urbanized area-"Jardim Botânico," a forested area with intermediary urbanization-"Parque Gabriel Knijnik," and in a relatively well-preserved forested area, although threatened by the urban growth-"Morro Santana." In Jardim Botânico, 36 species belonging to four genera were found, with high abundance of exotic species as Drosophila simulans Sturtevant and Zaprionus indianus (Gupta). In Parque Gabriel Knijnik, 33 species that belonged to four genera were found, with higher abundances of native species belonging to the Drosophila tripunctata species group and Drosophila willistoni species subgroup, and lower abundance of exotic species. As for Morro Santana, 32 species and three genera were found, with higher abundances of native groups, low representativeness of exotic species, and absence of Zaprionus indianus. The analysis of the Jaccard index showed higher similarity in the species composition between samples collected in summer and autumn, and between samples collected in winter and spring. On the other hand, the Morisita index differentiated Jardim Botânico from the other two studied sites. Our results show that Morro Santana is an important area of native biodiversity, reinforcing, therefore, the inclusion of this area in the project for the creation of an ecological corridor as proposed by the Ministry of the Environment of Brazil.

  3. Sediment chemical contamination of a shallow water area close to the industrial zone of Porto Marghera (Venice Lagoon, Italy).

    PubMed

    Zonta, Roberto; Botter, Margherita; Cassin, Daniele; Pini, Roberto; Scattolin, Mario; Zaggia, Luca

    2007-01-01

    The industrial zone of Porto Marghera is one the most important "contaminated sites of national interest" (SIN) in Italy, being identified as an area of high environmental risk. The site includes a wide shallow water area of the Venice Lagoon extending toward the city of Venice, which was investigated in order to acquire information on the pollutant level and distribution. Grain-size, heavy metal, nutrient, and organic micropollutant concentrations were determined in the surface sediment layers (0-5 and 5-10 cm depths) of 51 sites. A generally low contamination was found, except for Hg concentration, which increases the toxicological risk in most of the sites of the area, according to the results of a comparison with Sediment Quality Guidelines. A heavy pollution fingerprint (Cd, Cu, Hg, Pb, and Zn up to 15.2, 257, 11.9, 248, and 3010 mg/kg d.w., respectively) was instead found near the Tresse Island, which is ascribed to the spill of pollutants from the contaminated sediment disposed therein. Grain-size and heavy metal profiles down to a depth of 40 cm in eight selected sites, finally show a probable decrease of the pollution affecting the area in recent years.

  4. Um Infixation and Prefixation in Toba Batak.

    ERIC Educational Resources Information Center

    Crowhurst, Megan J.

    1998-01-01

    Examines the behavior of the morpheme, um, in Toba Batak and Tagalog, which alternates as a prefix or an infix, arguing that the variation is conditioned by constraints on consonant clusters. Three patterns of variation that occur with um are described, noting that the stages involved in changing from infixed to prefixed positions over time are…

  5. Complex Adaptive Systems of Systems (CASOS) engineering environment.

    SciTech Connect

    Detry, Richard Joseph; Linebarger, John Michael; Finley, Patrick D.; Maffitt, S. Louise; Glass, Robert John, Jr.; Beyeler, Walter Eugene; Ames, Arlo Leroy

    2012-02-01

    Complex Adaptive Systems of Systems, or CASoS, are vastly complex physical-socio-technical systems which we must understand to design a secure future for the nation. The Phoenix initiative implements CASoS Engineering principles combining the bottom up Complex Systems and Complex Adaptive Systems view with the top down Systems Engineering and System-of-Systems view. CASoS Engineering theory and practice must be conducted together to develop a discipline that is grounded in reality, extends our understanding of how CASoS behave and allows us to better control the outcomes. The pull of applications (real world problems) is critical to this effort, as is the articulation of a CASoS Engineering Framework that grounds an engineering approach in the theory of complex adaptive systems of systems. Successful application of the CASoS Engineering Framework requires modeling, simulation and analysis (MS and A) capabilities and the cultivation of a CASoS Engineering Community of Practice through knowledge sharing and facilitation. The CASoS Engineering Environment, itself a complex adaptive system of systems, constitutes the two platforms that provide these capabilities.

  6. Evaluation of operational, economic, and environmental performance of mixed and selective collection of municipal solid waste: Porto case study.

    PubMed

    Teixeira, Carlos A; Russo, Mário; Matos, Cristina; Bentes, Isabel

    2014-12-01

    This article describes an accurate methodology for an operational, economic, and environmental assessment of municipal solid waste collection. The proposed methodological tool uses key performance indicators to evaluate independent operational and economic efficiency and performance of municipal solid waste collection practices. These key performance indicators are then used in life cycle inventories and life cycle impact assessment. Finally, the life cycle assessment environmental profiles provide the environmental assessment. We also report a successful application of this tool through a case study in the Portuguese city of Porto. Preliminary results demonstrate the applicability of the methodological tool to real cases. Some of the findings focus a significant difference between average mixed and selective collection effective distance (2.14 km t(-1); 16.12 km t(-1)), fuel consumption (3.96 L t(-1); 15.37 L t(-1)), crew productivity (0.98 t h(-1) worker(-1); 0.23 t h(-1) worker(-1)), cost (45.90 € t(-1); 241.20 € t(-1)), and global warming impact (19.95 kg CO2eq t(-1); 57.47 kg CO2eq t(-1)). Preliminary results consistently indicate: (a) higher global performance of mixed collection as compared with selective collection; (b) dependency of collection performance, even in urban areas, on the waste generation rate and density; (c) the decline of selective collection performances with decreasing source-separated material density and recycling collection rate; and (d) that the main threats to collection route efficiency are the extensive collection distances, high fuel consumption vehicles, and reduced crew productivity.

  7. [Prevalence of use of preimplantation genetic diagnosis in Unidade Clínica de Paramiloidose from Centro Hospitalar do Porto].

    PubMed

    Valdrez, Kátia; Alves, Elisabete; Coelho, Teresa; Silva, Susana

    2014-01-01

    The Familial Amyloid Polyneuropathy, with the world's largest focus in Portugal, is recognized by the National Board of Assisted Reproductive Technologies as a serious disease eligible for Preimplantation Genetic Diagnosis. This study aims to determine the prevalence of the use of Preimplantation Genetic Diagnosis in FAP carriers followed in Unidade Clínica de Paramiloidose, Centro Hospitalar do Porto, and to identify the associated factors. Between January and May 2013, a representative sample of Portuguese Familial Amyloid Polyneuropathy carriers, aged between 18 and 55 years, was systematically recruited. The analysis is based on 111 carriers with previous familial diagnosis, who reported having ever tried to get pregnant after 2001. Data on sociodemographic characteristics and use of Preimplantation Genetic Diagnosis were collected through a self-administered questionnaire. Proportions were compared using the chi-square test. Crude and adjusted odds ratios (OR) and the respective confidence intervals of 95% (95% CI) were estimated using multivariatelogistic regression. The prevalence of use of Preimplantation Genetic Diagnosis was 20.7% (95% CI: 13.6-29.5). After adjustment, a household income above 1000 '¬/month (OR = 11.87; 95% CI 2.87-49.15) was directly associated with the use of Preimplantation Genetic Diagnosis, while carriers with an individual diagnosis (OR = 0.15; 95% CI 0.04-0.57) and children born after 2001 (OR = 0.07; 95% CI 0.02-0.32) revealed a prevalence of use significantly lower than those with a individual diagnosis and children born before 2001. The low prevalence of use of Preimplantation Genetic Diagnosis, as well as the less frequent use of the technique by those with a lower household income, shows the importance of improving access to Preimplantation Genetic Diagnosis in the case of Familial Amyloid Polyneuropathy. This work contributes to increase the sensitivity of health professionals around the use and accessibility to

  8. Risk factors and prevalence of newborn hearing loss in a private health care system of Porto Velho, Northern Brazil

    PubMed Central

    de Oliveira, Juliana Santos; Rodrigues, Liliane Barbosa; Aurélio, Fernanda Soares; da Silva, Virgínia Braz

    2013-01-01

    OBJECTIVE: To determine the prevalence of hearing loss and to analyze the results of newborn hearing screening and audiological diagnosis in private health care systems. METHODS Cross-sectional and retrospective study in a database of newborn hearing screening performed by a private clinic in neonates born in private hospitals of Porto Velho, Rondônia, Northern Brazil. The screening results, the risk for hearing loss, the risk indicators for hearing loss and the diagnosis were descriptively analyzed. Newborns cared in rooming in with their mothers were compared to those admitted to the Intensive Care Unit regarding risk factors for hearing loss. RESULTS: Among 1,146 (100%) enrolled newborns, 1,064 (92.8%) passed and 82 (7.2%) failed the hearing screening. Among all screened neonates, 1,063 (92.8%) were cared in rooming and 83 (7.2%) needed intensive care; 986 (86.0%) were considered at low risk and 160 (14.0%) at high risk for hearing problems. Of the 160 patients identified as having high risk for hearing loss, 83 (37.7%) were admitted to an hospitalized in the Intensive Care Unit, 76 (34.5%) used ototoxic drugs and 38 (17.2%) had a family history of hearing loss in childhood. Hearing loss was diagnosed in two patients (0.2% of the screened sample). CONCLUSIONS: The prevalence of hearing loss in newborns from private hospitals was two cases per 1,000 evaluated patients. The use of ototoxic drugs, admission to Intensive Care Unit and family history of hearing loss were the most common risk factors for hearing loss in the studied population. PMID:24142311

  9. Deaths resulting from the use of firearms by police against motor vehicles: Study of cases in Porto, Portugal.

    PubMed

    Rodrigues, Ezequiel; Faria, Paula; Santos, Agostinho; Fraga, Sílvia

    2016-04-01

    The objective of this study was to investigate the terminal ballistics of police shootings in which the bullets went through any motor vehicle structure before fatally wounding the occupants. 6 cases that occurred in Porto district between 1998 and 2013 were studied. The firearms used were 7.65 mm (n = 1) or 9 mm (n = 3) calibre semi-automatic pistols and 9 mm calibre submachine guns (n = 2); the bullets were full metal jacket type. The metal jacket of the collected projectiles was totally or partially destroyed in 3 cases. It exhibited a deformed structure in all cases. The trajectories of the bullets in the vehicles were always more or less linear, even when initial impact was at an oblique angle. The entry holes in the victims' bodies were larger or much larger in size than the calibre of the bullets. They were located, with the exception of one of the cases, in the left half of the body. The trajectories in the victims' bodies were from front to back, in one case, and from back to front in all others. Exit wounds were only found in two cases. Death occurred immediately after the victim was shot only in one case, despite a vital structure has been hit in all cases. The cases studied support the idea that the use of firearms against vehicles with the sole intention of immobilisation entails uncontrollable danger to the lives of the occupants, and especially when done by police forces not specifically trained for that purpose. Therefore, such use of firearms should be avoided. Copyright © 2016 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved.

  10. Seroprevalence of hepatitis a antibodies in a group of normal and Down syndrome children in Porto Alegre, southern Brazil.

    PubMed

    Ferreira, Cristina Targa; Leite, Júlio César; Tanaguchi, Adriano Nori R; Vieira, Sandra Maria G; Pereira-Lima, Jorge; da Silveira, Themis Reverbel

    2002-10-01

    The high incidence of Hepatitis A and B in institutionalized patients with Down Syndrome (DS) is not fully understood. Under poor hygienic conditions, immunological alterations might predispose individuals to these infections. Sixty three DS children between 1 and 12 years old living at home with their families were examined for anti-HAV and compared to age-matched controls (64 healthy children). This cross-sectional study was carried out from May 1999 to April 2000 at the Hospital de Clínicas of Porto Alegre, southern Brazil. Groups were compared in terms of age, sex, skin color, and family income (> R$ 500 and < R $ 500/month) by the chi-square test, with Yates' correction and for the prevalence of anti-HAV (Fisher's exact test). In the DS group (n=63), the mean age was 4.4 +/- 3.3 years, 94% of the patients were white and 51% were female. Family income was < or = R$ 500/month in 40 cases (63%). In the control group (n=64), the mean age was 4.8 +/- 2.7 years, 81% of the patients were white and 56% were female. Family income was < or = R$ 500 in 20 patients (31%). DS children's families had a significantly lower income (P<0.0005). In the DS group there were 6 positive (9.5%) anti-HAV cases, and all came from low-income families (less than R$ 500/ month). In the control group, 3 cases (4.7%) were positive for anti-HAV (two were from a low-income family and one was from a higher income family). These differences were not significant. Our data indicate that Hepatitis A is not a special risk for mentally retarded DS outpatients, even in a developing country like Brazil.

  11. Counselling in STD/HIV/AIDS in the context of rapid test: Perception of users and health professionals at a counselling and testing centre in Porto Alegre.

    PubMed

    Carvalho, Fernanda T; Both, Nalu S; Alnoch, Edi M; Conz, Jaqueline; Rocha, Katia B

    2016-03-01

    This article discusses the perceptions of professionals and users about counselling practices at a counselling and testing centre in Porto Alegre/RS based on interviews with 27 service users and 14 members of the staff. The following categories emerged from thematic analysis: professionals' perceptions on counselling, users' perceptions on counselling and changes in counselling due to the introduction of rapid test procedures. The results show that, although initially there were some imprecision and apparent contradictions in its use, rapid testing was considered an invitation to rethink practices, bringing service closer to users' needs. © The Author(s) 2016.

  12. [Correspondence from Julio Porto-Carrero to Arthur Ramos: the Brazilian Psychoanalytic Society and concern over the translation of psychoanalytic terms in the 1920s and 1930s].

    PubMed

    Castro, Rafael Dias de

    2015-12-01

    The article presents the correspondence that psychiatrist Julio Porto-Carrero sent to psychiatrist Arthur Ramos in 1932 to inform him about the activities of the Brazilian Psychoanalytic Society and about a concern over systematizing the translation of certain psychoanalytic concepts into Portuguese. This correspondence is used in conjunction with the analysis of other sources to suggest that psychiatrists and psychoanalysts in Rio de Janeiro were then endeavoring to make a place for psychoanalysis in the day's medical and scientific circles and encourage ever more specialists in Brazil to take an interest in Freud's theory.

  13. Funding of a medical research institute in a small country: 15 years of Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP)--interview conducted by Ivan Damjanov.

    PubMed

    Sobrinho-Simões, Manuel

    2005-06-01

    This is an interview with Prof Manuel Sobrinho-Simoes, the Director of the Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Porto, Portugal. The interview was prepared for this Pathology thematic issue, by Prof Ivan Damjanov, from the University of Kansas School of Medicine, Kansas City, Kansas, USA. The interview deals with the funding and the growth of IPATIMUP, which became, within 15 years from its inception, one of the leading biomedical research institutions of Portugal. The interview touches upon the logistical, political, financial, and personnel-related problems they encountered during these 15 years. It illustrates some of the dilemmas and questions faced by scientists in Porto, which are also relevant to scientists in other small countries.

  14. Using uh and um in spontaneous speaking.

    PubMed

    Clark, Herbert H; Fox Tree, Jean E

    2002-05-01

    The proposal examined here is that speakers use uh and um to announce that they are initiating what they expect to be a minor (uh), or major (um), delay in speaking. Speakers can use these announcements in turn to implicate, for example, that they are searching for a word, are deciding what to say next, want to keep the floor, or want to cede the floor. Evidence for the proposal comes from several large corpora of spontaneous speech. The evidence shows that speakers monitor their speech plans for upcoming delays worthy of comment. When they discover such a delay, they formulate where and how to suspend speaking, which item to produce (uh or um), whether to attach it as a clitic onto the previous word (as in "and-uh"), and whether to prolong it. The argument is that uh and um are conventional English words, and speakers plan for, formulate, and produce them just as they would any word.

  15. Implementação de um algoritmo para a limpeza de mapas da RCFM

    NASA Astrophysics Data System (ADS)

    Souza, C. L.; Wuensche, C. A.

    2003-08-01

    A Radiação Cósmica de Fundo em Microondas (RCFM), descoberta por Penzias e Wilson em 1965, é uma das ferramentas mais poderosas para o estudo da cosmologia. Com a descoberta de flutuações de temperatura na RCFM, da ordem de uma parte em 105, pelo COBE (1992), uma nova era teve início. Nos últimos onze anos, diversos instrumentos fizeram novas medidas de alta precisão, refinando os resultados apresentados pelo COBE, culminando com os resultados recentes do satélite WMAP. A análise de dados da RCFM, especialmente no caso de experimentos com pequena cobertura do céu, apresenta uma série de dificuldades devido a emissões de contaminantes externos, tais como a emissão da Galáxia e de fontes pontuais, e de ruídos intrínsecos tanto ao sistema de detecção quanto à estratégia de observação do céu. Uma das soluções típicas para a filtragem de dados brutos de um experimento para medir flutuações de temperatura é aplicar um gabarito (template) e um filtro passa alta ao produzir mapas simplificados (sem considerar matrizes de correlação ou covariância). No caso de experimentos que utilizam detectores HEMT, essa combinação de filtros remove, satisfatoriamente, ruídos do tipo 1/f gerados pela instabilidade no ganho do detector acoplado ao movimento do instrumento, definido pela estratégia de observação. Entretanto, o sinal resultante medido, tanto em simulações quanto em séries temporais reais, sugere que parte do sinal cosmológico pode estar sendo removido junto com o ruído dos detectores. Este trabalho descreve as etapas para a produção de um mapa típico (simulado) e os testes preliminares de um algoritmo para remover ruídos do tipo 1/f introduzidos pela estratégia de observação sem prejudicar a qualidade do sinal cosmológico presente no mapa.

  16. Fetal growth restriction and the risk of perinatal mortality-case studies from the multicentre PORTO study.

    PubMed

    Unterscheider, Julia; O'Donoghue, Keelin; Daly, Sean; Geary, Michael P; Kennelly, Mairead M; McAuliffe, Fionnuala M; Hunter, Alyson; Morrison, John J; Burke, Gerard; Dicker, Patrick; Tully, Elizabeth C; Malone, Fergal D

    2014-02-11

    Intrauterine growth restriction (IUGR) is the single largest contributing factor to perinatal mortality in non-anomalous fetuses. Advances in antenatal and neonatal critical care have resulted in a reduction in neonatal deaths over the past decades, while stillbirth rates have remained unchanged. Antenatal detection rates of fetal growth failure are low, and these pregnancies carry a high risk of perinatal death. The Prospective Observational Trial to Optimize Paediatric Health in IUGR (PORTO) Study recruited 1,200 ultrasound-dated singleton IUGR pregnancies, defined as EFW <10th centile, between 24+0 and 36+6 weeks gestation. All recruited fetuses underwent serial sonographic assessment of fetal weight and multi-vessel Doppler studies until birth. Perinatal outcomes were recorded for all pregnancies. Case records of the perinatal deaths from this prospectively recruited IUGR cohort were reviewed, their pregnancy details and outcome were analysed descriptively and compared to the entire cohort. Of 1,116 non-anomalous singleton infants with EFW <10th centile, 6 resulted in perinatal deaths including 3 stillbirths and 3 early neonatal deaths. Perinatal deaths occurred between 24+6 and 35+0 weeks gestation corresponding to birthweights ranging from 460 to 2260 grams. Perinatal deaths occurred more commonly in pregnancies with severe growth restriction (EFW <3rd centile) and associated abnormal Doppler findings resulting in earlier gestational ages at delivery and lower birthweights. All of the described pregnancies were complicated by either significant maternal comorbidities, e.g. hypertension, systemic lupus erythematosus (SLE) or diabetes, or poor obstetric histories, e.g. prior perinatal death, mid-trimester or recurrent pregnancy loss. Five of the 6 mortalities occurred in women of non-Irish ethnic backgrounds. All perinatal deaths showed abnormalities on placental histopathological evaluation. The PNMR in this cohort of prenatally identified IUGR cases was 5

  17. Pregnancy in patients with chronic renal insufficiency at Hospital de Clínicas of Porto Alegre, Brazil.

    PubMed

    Trevisan, Glaucia; Ramos, José Geraldo Lopes; Martins-Costa, Sérgio; Barros, Elvino José Guardão

    2004-01-01

    Chronic renal insufficiency (CRI) decreases reproductive capability. The biggest challenge in monitoring pregnant women with renal disease is to keep the intrauterine environment favorable to the fetus. One of the common prognosis in this kind of pregnancy involves premature birth, restricted growth and mental retardation. Also, the risk of developing complications is higher for the mother. This study focuses on evaluating CRI patients' clinical conditions during pregnancy, checking fetal development and birth and verifying the prevalence of CRI in pregnant women attended at Hospital de Clínicas of Porto Alegre-Brazil (HCPA). This is a retrospective study with both a control and an case group of pregnant women with CRI who delivered their babies at HCPA from 1989 to 1999. The case group is composed of pregnant women with CRI, while the control group was paired according to maternal and gestational ages and to the time of the delivery, which should be the same both in the experimental and in the control group. Among the criteria usually used to identify CRI, we chose the creatinine level higher than 1.5 mg/dL. Significance was established in 0.05%. Our results demonstrate that the prevalence of CRI was 6/10,000 births. Average maternal age was 28. Sixty five per cent of the patients, in both the groups, underwent prenatal monitoring, 40% presented preeclampsia, 48% presented urinary infection. Among the CRI complications, 48% of the cases presented anemia and 56% presented systemic hypertension. Average hematocrit was 24% while hemoglobin was 6.7 g/dL, which leads us to the conclusion that patients presented anemia during pregnancy. Average creatinine was 4.61 mg/dL. It is relevant that 64% of the CRI cases migrated to a substitutive renal therapy method. As for the fetus evolution in the case group, we confirmed the findings of previous studies, such as larger number of premature births (newborns younger than 36 weeks in 60% of the cases), larger number of

  18. Petroleum systems of the Po Basin Province of northern Italy and the northern Adriatic Sea; Porto Garibaldi (biogenic), Meride/Riva di Solto (thermal), and Marnoso Arenacea (thermal)

    USGS Publications Warehouse

    Lindquist, Sandra J.

    1999-01-01

    The Porto Garibaldi total petroleum system dominates the Po Basin Province of onshore northern Italy and offshore Italy and Croatia in the northern Adriatic Sea. Porto Garibaldi contains Pliocene (primarily) and Pleistocene (secondarily) biogenic gas ? approximately 16 TCF (2.66 BBOE) ultimately recoverable ? accumulated in co-eval siliciclastic reservoirs. This area was the northwestern edge of the Gondwanan (African) continental plate in pre-Hercynian time until the assembly of Pangea, a dominantly carbonate passive continental margin during the Mesozoic breakup of Pangea, and a Cenozoic collision zone with siliciclastic foredeep and foreland regions surrounded by thrust belts. At least two other petroleum systems, with Triassic (Meride / Riva di Solto) and Miocene (Marnoso Arenacea) source rocks, contribute oil and thermal gas reserves (nearly 1 BBOE) to the province. The major time of hydrocarbon expulsion of the thermal systems was Late Neogene during the Alpine and Apennine orogenies. Local Mesozoic oil expulsion from Triassic rocks also occurred, but those oils either were not trapped or were leaked from faulty traps through time.

  19. The prevalence of norovirus, astrovirus and adenovirus infections among hospitalised children with acute gastroenteritis in Porto Velho, state of Rondônia, western Brazilian Amazon

    PubMed Central

    Amaral, Maria Sandra Costa; Estevam, Grecy Kelli; Penatti, Marilene; Lafontaine, Roger; Lima, Ian Carlos Gomes; Spada, Paula Katharine Pontes; Gabbay, Yvone Benchimol; Matos, Najla Benevides

    2015-01-01

    Although viruses are well-established causes of acute gastroenteritis, few data on the circulation of these pathogens in Porto Velho, state of Rondônia, Brazil, are available. Thus, faecal samples from hospitalised diarrhoeic children, under six years of age, were collected and tested for the presence of norovirus (NoV), adenovirus (AdV) and astrovirus (AstV) from February 2010-February 2012. Specimens were screened by reverse-transcription polymerase chain reaction and viruses were found in 10.7% (63/591) of the cases. NoV, AdV and AstV were detected in 7.8%, 2% and 0.8% of the samples, respectively. NoV infection was observed at all ages and was most prevalent in zero-18-month-old children (84.7%; p = 0.002). A higher incidence of NoV was detected from February-April 2010, when it was found in 52.2% of the cases. Co-infections involving these viruses, rotavirus and enteropathogenic bacteria were detected in 44.4% (28/63) of the children with viral diarrhoea. Nosocomial infections were demonstrated in 28.6% (18/63) of the cases in which viruses were detected. The present paper reports, for the first time, the circulation of NoV and AstV among the paediatric population of Porto Velho and it contributes to our understanding of the roles of these pathogens in gastrointestinal infections. PMID:25946245

  20. The prevalence of norovirus, astrovirus and adenovirus infections among hospitalised children with acute gastroenteritis in Porto Velho, state of Rondônia, western Brazilian Amazon.

    PubMed

    Amaral, Maria Sandra Costa; Estevam, Grecy Kelli; Penatti, Marilene; Lafontaine, Roger; Lima, Ian Carlos Gomes; Spada, Paula Katharine Pontes; Gabbay, Yvone Benchimol; Matos, Najla Benevides

    2015-04-01

    Although viruses are well-established causes of acute gastroenteritis, few data on the circulation of these pathogens in Porto Velho, state of Rondônia, Brazil, are available. Thus, faecal samples from hospitalised diarrhoeic children, under six years of age, were collected and tested for the presence of norovirus (NoV), adenovirus (AdV) and astrovirus (AstV) from February 2010-February 2012. Specimens were screened by reverse-transcription polymerase chain reaction and viruses were found in 10.7% (63/591) of the cases. NoV, AdV and AstV were detected in 7.8%, 2% and 0.8% of the samples, respectively. NoV infection was observed at all ages and was most prevalent in zero-18-month-old children (84.7%; p = 0.002). A higher incidence of NoV was detected from February-April 2010, when it was found in 52.2% of the cases. Co-infections involving these viruses, rotavirus and enteropathogenic bacteria were detected in 44.4% (28/63) of the children with viral diarrhoea. Nosocomial infections were demonstrated in 28.6% (18/63) of the cases in which viruses were detected. The present paper reports, for the first time, the circulation of NoV and AstV among the paediatric population of Porto Velho and it contributes to our understanding of the roles of these pathogens in gastrointestinal infections.

  1. Long-time monitoring of polychlorinated dibenzo-p-dioxins and dibenzofurans over a decade in the ambient air of Porto, Portugal.

    PubMed

    Coutinho, M; Albuquerque, M; Silva, A P; Rodrigues, J; Borrego, C

    2015-10-01

    As part of a monitoring program initiated in 1998 and conducted by IDAD - Institute for Environment and Development and supported by regional municipal solid waste (MSW) management authorities, an extensive database of dioxins' and furans' (PCDD/PCDF) concentrations in ambient air was collected in Porto, in two sites classified as suburban. The present paper summarizes the analytical results of PCDD/PCDF in ambient air obtained from 2001 to 2014 through this intensive monitoring work. The toxic equivalent (WHO-TEQ 1998) concentrations of the PCDD/PCDF in the air ranged from 8.2 to 904.4 fg TEQ m(-3), with an average and median values of 104.5 fg TEQ m(-3) and 49.8 fg TEQ m(-3), respectively. The PCDD/PCDF concentration trend in Porto's ambient air shows a clear drop of the annual average values occurred during the study period. The presence of seasonal variations is very clear in the present study. Winter levels (average: 154.3 fg TEQ m(-3)) are significantly higher than summer levels (average: 42.9 fg TEQ m(-3)). The PCDD/PCDF profiles' details show that several differences occurred over time. The homologue profiles presented changes and the PCDD congeners have decreased in terms of mass. The analysis of concentrations in combination with specific homologue and congener patterns of PCDD/PCDF allowed identification of potential emission sources. Copyright © 2015 Elsevier Ltd. All rights reserved.

  2. Genotoxic effect of polycyclic aromatic hydrocarbons in the metropolitan area of Porto Alegre, Brazil, evaluated by Helix aspersa (Müller, 1774).

    PubMed

    Ianistcki, M; Dallarosa, J; Sauer, C; Teixeira, C E; da Silva, J

    2009-07-01

    The purpose of this study was to biomonitor metropolitan areas of Porto Alegre (Brazil) for PAHs associated with atmospheric particles and check their effects on the DNA of the land mollusk Helix aspersa. The sampling sites are located in an urban area with heavy traffic: (i) Canoas, (ii) Sapucaia do Sul, and (iii) FIERGS/Porto Alegre. The samples were collected during a continuous period of 24 hours during 15 days using Stacked Filter Units (SFU) on polycarbonate filters (two separated size fractions: PM(10-2.5) and PM(< 2.5)). The concentrations of 16 major PAHs were determined according to EPA. Comet assay on H. aspersa hemolymph cells was chosen for genotoxicity evaluation. This evaluation shows that, in general, the smaller PM-size fractions (PM(< 2.5)) have the highest genotoxicity and contain higher concentrations of extractable organic matter. In addition, associations between chemical characteristics and PM carcinogenicity tend to be stronger for the smaller PM-size fractions.

  3. Use of ``Cold Spell'' indices to quantify excess chronic obstructive pulmonary disease (COPD) morbidity during winter (November to March 2000-2007): case study in Porto

    NASA Astrophysics Data System (ADS)

    Monteiro, Ana; Carvalho, Vânia; Góis, Joaquim; Sousa, Carlos

    2013-11-01

    The aim of this study was to examine the relationship between the occurrence of cold episodes and excess hospital admissions for chronic obstructive pulmonary disease (COPD) in Porto, Portugal, in order to further understand the effects of cold weather on health in milder climates. Excess COPD winter morbidity was calculated from admissions for November to March (2000-2007) in the Greater Porto Metropolitan Area (GPMA). Cold spells were identified using several indices (Díaz, World Meteorological Organization, Cold Spell Duration Index, Australian Index and Ondas’ Project Index) for the same period. Excess admissions in the periods before and after the occurrence of cold spells were calculated and related to the cold spells identified. The COPD seasonal variation admission coefficient (CVSA) showed excess winter admissions of 59 %, relative to other months. The effect of cold spell on the aggravation of COPD occurs with a lag of at least 2 weeks and differs according to the index used. This study indicates the important role of the persistence of cold periods of at least 2 weeks duration in the increase in COPD admissions. The persistence of moderate temperatures (Tmin ≤5 °C) for a week can be more significant for increasing COPD admissions than very low temperatures (Tmin ≤ 1.6 °C) for just a few days. The Ondas projects’ index provides the most accurate detection of the negative impacts of cold persistency on health, while the Diaz index is better at evaluating the consequences of short extreme cold events.

  4. [Deaths from violent causes among adolescents and young adults in two cities of the Southern Cone: Córdoba (Argentina) and Porto Alegre (Brazil), 1990-2010].

    PubMed

    Rojas Cabrera, Eleonora Soledad

    2015-01-01

    The scope of this paper is to analyze and compare the evolution of deaths from violent causes among adolescents and young adults in the cities of Cordoba (Argentina) and Porto Alegre (Brazil). It also seeks to establish if the results are consistent with those reported in previous national and local research. Based on official data, specific mortality rates (by sex, age and cause) are calculated for the 1990-92 and 2008-10 periods. In general, violent causes play a significant part in the total number of deaths especially among young men and as they get older. In line with the reality of the country, in Córdoba both non-traffic-related and also traffic-related deaths are most frequent. On the other hand, in Porto Alegre (where the level of deaths from violent causes is higher), homicides and traffic accidents are the most common cause of death. Beyond the actions taken so far, it is necessary to redouble efforts to counter the problem in question, both in the recording of information for decision-making and in regard to the decisions when they are put into practice.

  5. Influence of urban resilience measures in the magnitude and behaviour of energy fluxes in the city of Porto (Portugal) under a climate change scenario.

    PubMed

    Rafael, S; Martins, H; Sá, E; Carvalho, D; Borrego, C; Lopes, M

    2016-10-01

    Different urban resilience measures, such as the increase of urban green areas and the application of white roofs, were evaluated with the WRF-SUEWS modelling system. The case study consists of five heat waves occurring in Porto (Portugal) urban area in a future climate scenario. Meteorological forcing and boundary data were downscaled for Porto urban area from the CMIP5 earth system model MPI-ESM, for the Representative Concentration Pathway RCP8.5 scenario. The influence of different resilience measures on the energy balance components was quantified and compared between each other. Results show that the inclusion of green urban areas increases the evaporation and the availability of surface moisture, redirecting the energy to the form of latent heat flux (maximum increase of +200Wm(-2)) rather than to sensible heat. The application of white roofs increases the solar radiation reflection, due to the higher albedo of such surfaces, reducing both sensible and storage heat flux (maximum reductions of -62.8 and -35Wm(-2), respectively). The conjugations of the individual benefits related to each resilience measure shows that this measure is the most effective one in terms of improving the thermal comfort of the urban population, particularly due to the reduction of both sensible and storage heat flux. The obtained results contribute to the knowledge of the surface-atmosphere exchanges and can be of great importance for stakeholders and decision-makers. Copyright © 2016 Elsevier B.V. All rights reserved.

  6. The Hemiptera type-material housed in the "Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul" of Porto Alegre, Brazil.

    PubMed

    Ruschel, Tatiana Petersen; Guidoti, Marcus; Barcellos, Aline

    2013-01-01

    We provide a commented and referenced list on the type material deposited in the "Museu de Ciencias Naturais, Fundação Zoobotânica do Rio Grande do Sul", Porto Alegre, Brazil. Geographic coordinates are available on a digital repository for free access. High-resolution images of the specimens are available under request.

  7. Efficacy and reliability of upgraded industrial treatment plant at Porto Marghera, near Venice, Italy, in removing nutrients and dangerous micropollutants from petrochemical wastewaters.

    PubMed

    Verlicchi, Paola; Cattaneo, Serena; Marciano, Ferdinando; Masotti, Luigi; Vecchiato, Giuseppe; Zaffaroni, Carlo

    2011-08-01

    Chemical and petrochemical wastewaters contain a host of contaminants that require different treatment strategies. Regulation of macropollutants and micropollutants in the final discharge from industrial wastewater treatment plants (WWTPs) have become increasingly stringent in recent decades, requiring many WWTPs to be upgraded. This article presents an analysis of a WWTP treating petrochemicals in Porto Marghera, Italy, that recently was upgraded following legislative changes. Because of strict legal limits for macropollutants and micropollutants and a lack of space necessary for a full-scale WWTP overhaul, the existing activated sludge tank was converted into a membrane biological reactor. The paper presents experimental data collected during a five-month investigation showing the removal rates achieved by the upgraded plant for macropollutants (particularly nitrogen compounds) and micropollutants (heavy metals and organic and inorganic toxic compounds).

  8. [Critical trajectories of female victims of gender violence: discourse analysis of women and staff professionals in Porto Alegre, Rio Grande do Sul State, Brazil].

    PubMed

    Meneghel, Stela Nazareth; Bairros, Fernanda; Mueller, Betânia; Monteiro, Débora; Oliveira, Lidiane Pellenz de; Collaziol, Marceli Emer

    2011-04-01

    This qualitative study aims to describe the trajectories of female victims of gender violence in Porto Alegre, Rio Grande do Sul State, Brazil. The methodology included in-depth interviews with women and staff, attempting to map the critical paths of women when they made the decision to seek professional help. We interviewed 21 women victims of gender violence and 25 professionals, including law enforcement officials, health and social workers, and nongovernmental organizations. The women's trajectories in the services were mapped, identifying facilitating factors and obstacles in the process of breaking with gender violence. The victims reported: pressure by professional staff to return to their marriages and police inefficiency in providing protection. The discourse of law enforcement officials and health and social workers showed a range of different concepts regarding violence, medicalization of violence, and network fragmentation.

  9. Organ transplants and education: experience of the Universidade Federal de Ciências da Saúde de Porto Alegre with subjects.

    PubMed

    Pereira, J D; Pereira, C M d V; Soares, F M; Cruz, L V; Zago, M K; Girotto, M C; Garcia, C D; Garcia, V D

    2014-01-01

    Today there is an insufficient number of donated organs in Brazil. This is particularly due to the general population's and health care professionals' lack of information. Therefore, with this project we intend to consolidate knowledge on organ donation to teach health care students of different areas so they are able to propagate such knowledge. In 2006, at Universidade Federal de Ciências da Saúde de Porto Alegre, an "Organ donation and transplants" subject was created, with the aim to educate health care students. In the next years, it was split in two subjects, named "Introduction to transplants" and "Donation and transplants." By enrolling, students get theoretical classes and practical experience in out- and inpatient facilities and in surgical environments at the Santa Casa Hospital Complex. Furthermore, they can participate in campaigns at parks, stadiums, and health care fairs that take place at several schools in Porto Alegre. To finish the subjects, students present a conclusion report. Seven years after implementation of the subject, and with more than 400 students enrolled, several accomplishments can be highlighted. For example, the creation of the Organ Transplantation League, the implementation of a day to spread conception of the donation-transplant process (with the elaboration of a Web page on the subject), and the release of a book on the subject written by students and professors. Health care professionals' education is a central point in donation and transplant process. This is because they become, inevitably, educators, and this brings a long-term consequence, consisting of enhanced logistics skills on brain-death diagnosis and further transfer of information to the population (hopefully reducing denial by families at the time of the donation). We conclude that this is a project to be followed by other medical schools so that, effectively, the number of donors increases and, consequently, the transplantation of organs and tissues as well

  10. Epidemiological and ecological aspects related to malaria in the area of influence of the lake at Porto Primavera dam, in western São Paulo State, Brazil.

    PubMed

    Gomes, Almério de C; Paula, Marcia B de; Duarte, Ana Maria R de C; Lima, Maura A; Malafronte, Rosely dos S; Mucci, Luis F; Gotlieb, Sabina Lea D; Natal, Delsio

    2008-01-01

    A study was carried out in the area of influence of the Porto Primavera Hydroelectric Power Station, in western São Paulo State, to investigate ecological and epidemiological aspects of malaria in the area and monitor the profile of the anopheline populations following the environmental changes brought about by the construction of the lake. Mosquitoes captured were analyzed by standardized indicator species analysis (ISA) before and during different flooding phases (253 m and 257 m elevations). The local human population was studied by means of parasitological (thin/thick blood smears), molecular (PCR) and serological tests. Serological tests consisted of Enzyme Linked Immunosorbent Assay (ELISA) with synthetic peptides of the circumsporozoite protein (CSP) from classic Plasmodium vivax, P. vivax variants (VK247 and "vivax-like"), P. malariae and P. falciparum and Indirect Immunofluorescence Assay (IFA) with asexual forms of P. vivax, P. malariae and P. falciparum. The results of the entomological survey indicated that, although the Anopheles darlingi population increased after the flooding, the population density remained very low. No malaria, parasite infection or DNA was detected in the inhabitants of the study area. However, there was a low frequency of antibodies against asexual forms and a significant prevalence of antibodies against P. vivax, P. vivax variants, P. falciparum and P. malariae; the presence of these antibodies may result from recent or less recent contact with human or simian Plasmodium (a parallel study in the same area revealed the existence of a sylvatic cycle). Nevertheless, these results suggest that, as in other places where malaria is present and potential vectors circulate, the local epidemiological conditions observed could potentially support the transmission of malaria in Porto Primavera Lake if infected individuals are introduced in sufficient numbers. Further studies are required to elucidate the phenomena described in this paper.

  11. Use of "Cold Spell" indices to quantify excess chronic obstructive pulmonary disease (COPD) morbidity during winter (November to March 2000-2007): case study in Porto.

    PubMed

    Monteiro, Ana; Carvalho, Vânia; Góis, Joaquim; Sousa, Carlos

    2013-11-01

    The aim of this study was to examine the relationship between the occurrence of cold episodes and excess hospital admissions for chronic obstructive pulmonary disease (COPD) in Porto, Portugal, in order to further understand the effects of cold weather on health in milder climates. Excess COPD winter morbidity was calculated from admissions for November to March (2000-2007) in the Greater Porto Metropolitan Area (GPMA). Cold spells were identified using several indices (Díaz, World Meteorological Organization, Cold Spell Duration Index, Australian Index and Ondas' Project Index) for the same period. Excess admissions in the periods before and after the occurrence of cold spells were calculated and related to the cold spells identified. The COPD seasonal variation admission coefficient (CVSA) showed excess winter admissions of 59 %, relative to other months. The effect of cold spell on the aggravation of COPD occurs with a lag of at least 2 weeks and differs according to the index used. This study indicates the important role of the persistence of cold periods of at least 2 weeks duration in the increase in COPD admissions. The persistence of moderate temperatures (Tmin ≤5 °C) for a week can be more significant for increasing COPD admissions than very low temperatures (Tmin ≤ 1.6 °C) for just a few days. The Ondas projects' index provides the most accurate detection of the negative impacts of cold persistency on health, while the Diaz index is better at evaluating the consequences of short extreme cold events.

  12. Ligation of huge spontaneous porto-systemic collaterals to avoid portal inflow steal in adult living donor liver transplantation: A case-report.

    PubMed

    Elshobary, Mohamed; Shehta, Ahmed; Salah, Tarek; Sultan, Ahmed Mohamed; Shiha, Usama; Elghawalby, Ahmed Nabieh; Monier, Ahmed; Elsadany, Mohamed; AmrYassen; Fathy, Omar; Wahab, Mohamed Abdel

    2017-01-01

    In adult living donor liver transplantation (LDLT), maintenance of adequate portal inflow is essential for the graft regeneration. Portal inflow steal (PFS) may occur due to presence of huge spontaneous porto-systemic collaterals. A surgical procedure to increase the portal inflow is rarely necessary in adult LDLT. A 52 years male patient with end-stage liver disease due to chronic hepatitis C virus infection. Preoperative portography showed marked attenuated portal vein and its two main branches, patent tortuous splenic vein, multiple splenic hilar collaterals, and large lieno-renal collateral. He received a right hemi-liver graft from his nephew. Exploration revealed markedly cirrhotic liver, moderate splenomegaly with multiple collaterals and large lieno-renal collateral. Upon dissection of the hepato-duodenal ligament, a well-developed portal vein could be identified with a small mural thrombus. The recipient portal vein stump was anastomosed, in end to end fashion, to the graft portal vein. Doppler US showed reduced portal vein flow, so ligation of the huge lieno-renal collateral that allows steal of the portal inflow. After ligation of the lieno-renal collateral, improvement of the portal vein flow was observed in Doppler US. There is no accepted algorithm for managing spontaneous lieno-renal shunts before, during, or after liver transplantation, and evidence for efficacy of treatments remains limited. We report a case of surgical interruption of spontaneous huge porto-systemic collateral to prevent PFS during adult LDLT. Complete interruption of large collateral vessels might be needed as a part of adult LDLT procedure to avoid devastating postoperative PFS. Copyright © 2016. Published by Elsevier Ltd.

  13. Development and Validation of Diagnostic Criteria for IBD Subtypes Including IBD-unclassified in Children: a Multicentre Study From the Pediatric IBD Porto Group of ESPGHAN.

    PubMed

    Birimberg-Schwartz, Liron; Zucker, David M; Akriv, Amichay; Cucchiara, Salvatore; Cameron, Fiona L; Wilson, David C; Lazowska, Iza; Yianni, Lambri; Paul, Siba Prosad; Romano, Claudio; Kolacek, Sanja; Buderus, Stephan; Pærregaard, Anders; Russell, Richard K; Escher, Johanna C; Turner, Dan

    2017-09-01

    The revised Porto criteria identify subtypes of paediatric inflammatory bowel diseases: ulcerative colitis [UC], atypical UC, inflammatory bowel disease unclassified [IBDU], and Crohn's disease [CD]. Others have proposed another subclassifiction of Crohn's colitis. In continuation of the Porto criteria, we aimed to derive and validate criteria, termed "PIBD-classes," for standardising the classification of the different IBD subtypes. This was a multicentre retrospective longitudinal study from 23 centres affiliated with the Port -group of ESPGHAN. Both a hypothesis-driven judgmental approach and mathematical classification and regression tree [CART] modelling were used for creating a diagnostic algorithm. Since small bowel inflammation is easily recognised as CD, we focused here primarily on the phenotype of colitis. In all, 749 IBD children were enrolled: 236 [32%] Crohn's colitis, 272 [36%] UC and 241 [32%] IBDU [age 10.9 ± 3.6 years] with a median follow-up of 2.8 years (interquartile range [IQR] 1.7-4.3). A total of 23 features were clustered in three classes according to their prevalence in UC: six class-1 features [0% prevalence in UC], 12 class-2 features [< 5% prevalence], and five class-3 features [5-10% prevalence]. According to the algorithm, the disease should be classified as UC if no features exist in any of the classes. When at least one feature exists, different combinations classify the disease into atypical UC, IBDU or CD. The algorithm differentiated UC from CD and IBDU with 80% sensitivity (95% confidence interval [CI] 71-88%) and 84% specificity [77-89%], and CD from IBDU and UC with 78% sensitivity [67-87%] and 94% specificity [89-97%]. The validated PIBD-classes algorithm can adequately classify children with IBD into small bowel CD, colonic CD, IBDU, atypical UC, and UC.

  14. Prevalence of hepatitis C virus and human immunodeficiency virus in a group of patients newly diagnosed with active tuberculosis in Porto Alegre, Southern Brazil

    PubMed Central

    Costi, Cintia; Grandi, Tarciana; Halon, Maria Laura; Silva, Márcia Susana Nunes; da Silva, Cláudia Maria Dornelles; Gregianini, Tatiana Schäffer; Possuelo, Lia Gonçalves; Jarczewski, Carla Adriane; Niel, Christian; Rossetti, Maria Lucia Rosa

    2017-01-01

    BACKGROUND Porto Alegre is the Brazilian state capital with second highest incidence of tuberculosis (TB) and the highest proportion of people infected with human immunodeficiency virus (HIV) among patients with TB. Hepatitis C virus (HCV) infection increases the risk of anti-TB drug-induced hepatotoxicity, which may result in discontinuation of the therapy. OBJECTIVES The aim of this study was (i) to estimate prevalence of HCV and HIV in a group of patients newly diagnosed with active TB in a public reference hospital in Porto Alegre and (ii) to compare demographic, behavioural, and clinical characteristics of patients in relation to their HCV infection status. METHODS One hundred and thirty-eight patients with TB were tested for anti-HCV antibody, HCV RNA, and anti-HIV1/2 antibody markers. HCV RNA from real-time polymerase chain reaction (PCR)-positive samples was submitted to reverse transcription and PCR amplification. The 5′ non-coding region of the HCV genome was sequenced, and genotypes of HCV isolates were determined. FINDINGS Anti-HCV antibody, HCV RNA, and anti-HIV antibodies were detected in 27 [20%; 95% confidence interval (CI), 13-26%], 17 (12%; 95% CI, 7-18%), and 34 (25%; 95% CI, 17-32%) patients, respectively. HCV isolates belonged to genotypes 1 (n = 12) and 3 (n = 4). Some characteristics were significantly more frequent in patients infected with HCV. Among them, non-white individuals, alcoholics, users of illicit drugs, imprisoned individuals, and those with history of previous TB episode were more commonly infected with HCV (p < 0.05). MAIN CONCLUSIONS HCV screening, including detection of anti-HCV antibody and HCV RNA, will be important to improving the management of co-infected patients, given their increased risk of developing TB treatment-related hepatotoxicity. PMID:28327789

  15. [Monitoring plan of environmental contaminants in sheep milk from areas next to an Italian contaminated site named «Aree industriali di Porto Torres e discarica di Calancoi» (Industrial areas of Porto Torres and landfill of Calancoi) in Sardinia Region (Southern Italy)].

    PubMed

    Sgarangella, Francesco; Bitti, Giuseppe; Suelzu, Maria Caterina; Desini, Pietro; Piras, Patrizia; Fiori, Gianuario; Cossu, Maurizio; Chessa, Giannina

    2016-01-01

    to assess concentration levels of dioxins, PCBs, and chemical elements in sheep milk produced in areas close to the Italian contaminated site (CS) located in the North-West of Sardinia (Southern Italy), named «Aree industriali di Porto Torres e discarica di Calancoi» (i.e., industrial areas of Porto Torres and landfill of Calancoi). monitoring plan of environmental contaminants on zootechnical productions based on analysis of dioxins, PCBs, heavy metals (Cd, Hg, Pb), and other elements (As, Be, Cr, Ni, Tl , Zn) in sheep bulk milk. 60 samples of sheep bulk milk were collected in rural farms where animals were fed mainly with forage and feed produced in the CS: 30 samples from farms located near the industrial area of Porto Torres and 30 taken from farms spread out the landfill area of Calancoi, a former waste dump in the East of Sassari city. the concentration levels of target substances were determined and compared to legal thresholds fixed on EU regulations. concentrations of target substances in all samples were below the maximum limits set by EU regulations. Dioxins and DL-PCBs (expressed as the sum) were in the range 0.20-1.30 pg WHO-TEQ/g fat, NDL-PCB (sum of the six marker congeners) were in the range 0.50-7.50 ng/g, while concentrations of all heavy metals were not detectable or were near the limit of quantitation of the method. Undetectable concentrations were also observed for the toxic elements beryllium and thallium. concentration levels of micro-pollutants in milk samples were significantly lower than the legal thresholds. Concentrations and congener profiles showed no relevant differences compared to milk samples from areas with low environmental impact, therefore consumption of milk from the studied area do not produce a higher intake of contaminants respect to the regional milk. The results of this study do not make the resident population safe from health risks caused by critical issue of the CS, but provide information limited to the safety of

  16. Ready-to-eat street-vended food as a potential vehicle of bacterial pathogens and antimicrobial resistance: An exploratory study in Porto region, Portugal.

    PubMed

    Campos, Joana; Gil, Joana; Mourão, Joana; Peixe, Luísa; Antunes, Patrícia

    2015-08-03

    The ready-to-eat street vending commerce, as street mobile food vendors, has grown exponentially worldwide, representing in some countries a significant proportion of food consumed by the urban population. However, the microbiological food safety hazards of mobile vending units in industrialized countries are scarcely evaluated. To assess the microbiological quality and safety of this type of food and try to achieve the connection of its contamination with hygienic conditions of food-handlers, we analyzed hotdogs (n = 10), hamburgers (n = 10) and hands (n = 9) from ten street-vending trailers in the Porto region. Food and food-handler samples were tested for Enterobacteriaceae and coliform counts, Escherichia coli and coagulase-positive staphylococci counts/detection and presence of Salmonella. Aerobic mesophilic counts and detection of Listeria monocytogenes (Pulsed Field Gel Electrophoresis-PFGE and serotyping) were also tested in food samples. E. coli isolates were confirmed by MALDI-TOF and characterized for clonality (phylogenetic groups-PhG, PFGE and Multilocus Sequence Typing), antibiotic resistance (disk diffusion, PCR/sequencing) and intestinal pathogenic virulence factors (PCR/sequencing). All food samples presented poor microbiological quality (100% Enterobacteriaceae and coliforms; 20% E. coli (4 hamburgers, 4 trailers) and 20% (2 hamburgers/2 hotdogs, 3 trailers) were positive for L. monocytogenes (2 PFGE-types belonging to serotype 1/2a and 4b). Salmonella and coagulase-positive staphylococci were not detected. Food-handlers carried Enterobacteriaceae and coliforms (100%), E. coli (11%) and/or coagulase-positive staphylococci (44%). E. coli was detected in 12 samples (n = 30-food/food-handlers; phylogenetic groups A0/A1/B1) with 33% resistant to one or more antibiotics. Two multidrug resistant atypical E. coli pathotype strains (astA-ST165(CC165)/food-handler, eaeA-ST327/food) were detected. Three out of eight E. coli clonal lineages [ST409/ST976(CC10

  17. [Consumption of nutrients among the elderly living in Porto Alegre in the State of Rio Grande do Sul, Brazil: a population-based study].

    PubMed

    Venturini, Carina Duarte; Engroff, Paula; Sgnaolin, Vanessa; El Kik, Raquel Milani; Morrone, Fernanda Bueno; da Silva Filho, Irenio Gomes; De Carli, Geraldo Attilio

    2015-12-01

    A cross-sectional, population-based study was conducted on a random sample of 427 elderly individuals living in Porto Alegre, Brazil, to establish the nutrient consumption profile and verify its association with sociodemographic and health variables. Dietary intake was assessed using the 24-hour Food Recall Survey and the Dietetic Research Investigation technique. Seventy percent of the elderly respondents were women: 48.5% were between 60 and 69 years old; 68.8% had less than 8 years of schooling; 39% had a family income of between 2 and 5 minimum wages and 58.4% took no physical exercise. Hypertension was the most prevalent disease among the elderly and 54.9% were underweight. Men consumed more calories, protein, fiber, minerals and vitamins than women. Carbohydrate and calcium intake increases with advancing age, while zinc intake decreases. Physical exercise increased the intake of calories, magnesium, potassium and phosphorus. The higher the schooling the greater the intake of vitamins B6 and B12; the higher the family income, the greater the consumption of vitamin B6 and folic acid. The results show that there are nutritional deficiencies in the daily diet of the Brazilian elderly population, especially among women and individuals over 80 years of age.

  18. Simulating deforestation and carbon loss in Amazonia: impacts in Brazil's Roraima state from reconstructing Highway BR-319 (Manaus-Porto Velho).

    PubMed

    Barni, Paulo Eduardo; Fearnside, Philip Martin; Graça, Paulo Maurício Lima de Alencastro

    2015-02-01

    Reconstruction of Highway BR-319 (Manaus-Porto Velho) would allow for access from the "arc of deforestation" in the southern part of Brazil's Amazon region to vast blocks of forests in central and northern Amazonia. Building roads is known to be a major driver of deforestation, allowing entry of squatters, and other actors. Rather than deforestation along the highway route, here we consider the road's potential for stimulating deforestation in a separate location, approximately 550 km north of BR-319's endpoint in Manaus. Reconstructing BR-319 has great potential impact to start a new wave of migration to this remote region. The southern portion of the state of Roraima, the focus of our study, is already connected to Manaus by Highway BR-174. We modeled deforestation in southern Roraima and simulated carbon emissions between 2007 and 2030 under four scenarios. Simulations used the AGROECO model in DINAMICA-EGO © software. Two scenarios were considered with reconstruction of BR-319 and two without this road connection. For each of the two possibilities regarding BR-319, simulations were developed for (1) a "conservation" (CONSERV) scenario that assumes the creation of a series of protected areas, and (2) a "business-as-usual" (BAU) scenario that assumes no additional protected areas. Results show that by 2030, with BR-319 rebuilt, deforestation carbon emissions would increase between 19% (CONSERV) and 42% (BAU) over and above those corresponding to no-road scenarios.

  19. STUDY OF THE PREVALENCE OF Capillaria hepatica IN HUMANS AND RODENTS IN AN URBAN AREA OF THE CITY OF PORTO VELHO, RONDÔNIA, BRAZIL

    PubMed Central

    da Rocha, Elierson José Gomes; Basano, Sérgio de Almeida; de Souza, Márcia Maria; Honda, Eduardo Resende; de Castro, Márcio Botelho; Colodel, Edson Moleta; Silva, Jéssica Carolinne Damasceno e; Barros, Lauro Prado; Rodrigues, Elisa Sousa; Camargo, Luís Marcelo Aranha

    2015-01-01

    Introduction: Hepatic capillariosis, caused by Capillaria hepatica (Calodium hepaticum) (Bancroft, 1893), Travassos, 1915 (Nematoda, Trichinelloidea, Capillariidae), is a common zoonosis in rodents but is rare in humans. Seventy-two cases in humans have been reported worldwide since the first case was described by MACARTHUR in 192417,27. This study aimed to determine the prevalence of Capillaria hepatica in humans and rodents in an urban area of Porto Velho, the capital of Rondônia, in Brazil. Methods: After conducting a census of the area, 490 residents were randomly selected, and, after signing a term of consent, provided blood samples that were screened for anti-Capillaria hepatica antibodies. Simultaneously, rats were captured to assess the prevalence of this parasite in rodents by histopathological examination in liver sections. Results: A prevalence of 1.8% was found among residents who had specific antibodies at a dilution of 1:150, indicating exposure to parasite eggs; 0.8% of the subjects also had positive titers at a dilution of 1:400, indicating true infection. The prevalence in rats was 2%. Conclusions: The prevalence of infection with this parasite among humans and rats was low. While the prevalence encountered among humans was within the limits reported in the literature, the prevalence among rodents was much lower. PMID:25651325

  20. Distribution and genetic diversity of the human polyomaviruses JC and BK in surface water and sewage treatment plant during 2009 in Porto Alegre, Southern Brazil.

    PubMed

    Comerlato, J; Souza-Campos, F; Souza-Arantes, T; Roos-Kulmann, M I; Trindade-Oliveira, M; Rosado-Spilki, F; Guedes-Frazzon, A P; Roehe, P M; Franco, A C

    2017-01-01

    The human polyomaviruses JC and BK (JCPyV and BKPyV) are ubiquitous, species-specific viruses that belong to the family Polyomaviridae. These viruses are known to be excreted in human urine, and they are potential indicators of human wastewater contamination. In order to assess the distribution of both JCPyV and BKPyV in urban water samples collected from a sewage treatment plant (STP) and from a canalized water stream of Porto Alegre, Brazil, two nested-PCR assays were optimized and applied to the samples collected. The amplicons obtained were submitted to sequencing, and the sequences were analyzed with sequences of human polyomaviruses previously deposited in GenBank. Twelve out of 30 water samples (40%) were JCPyV positive, whereas six samples (20%) were BKPyV positive. The sequencing results confirmed the presence of JCPyV subtypes 1 and 3, whereas only BKPyV Ia and Ib were found. This study shows for the first time the presence of human polyomaviruses in surface water and in samples collected in a sewage treatment plant in southern Brazil.

  1. Convergence and Non-Convergence: stories of elderly who have attempted suicide and the Integrated Care System in Porto Alegre/RS, Brazil.

    PubMed

    Conte, Marta; Cruz, Claudia Weyne; da Silva, Carla Guimarães; de Castilhos, Nara Regina Moura; Nicolella, Alberto Domiziano Rita

    2015-06-01

    This article is the product of research undertaken in the city of Porto Alegre, in the Brazilian state of Rio Grande do Sul. The goal is to bring to light and discuss a little known phenomenon - attempted suicide by the elderly. Under-reporting of suicide attempts among this population makes it difficult to place this serious public health problem on the political agenda. As part of this study, we interviewed not only elderly persons who had attempted suicide, but also their family members and mental health and emergency and urgent service professionals. These interviews took place during the course of 2014. From a textual discourse analysis of the various reports, there emerged a category we will call Convergence and Non-Convergence, which deals with the relationship between the elderly population's need for care and the healthcare model in use. This study uses three short stories of individuals to question the biomedical model of serving risk situations, stressing the concept of an Expanded Clinic to provide integrated healthcare. This concept focuses on the different types of care and the uniqueness of each user, which often the biomedical model neglects. This study also highlights the need to develop a line of care for the elderly, with investments in continued education about active aging and care in times of crises, articulating a cross-sectorial network.

  2. [Safe sex negotiation on TV: gender discourses among female community health workers under the Family Health Program in Porto Alegre, Rio Grande do Sul, Brazil].

    PubMed

    Oliveira, Dora Lúcia Leidens Correa de; Meyer, Dagmar Estermann; Santos, Luis Henrique Sacchi dos; Wilhelms, Daniela Montano

    2004-01-01

    This paper analyzes the understanding among female community health workers in the Family Health Program in Porto Alegre, Rio Grande do Sul State, Brazil, concerning the notion of safe sex negotiation promoted by the Brazilian government in AIDS prevention campaigns targeting women. The paper is based on empirical data gathered in 2003. The study focused on TV advertisements used in campaigns by the Brazilian Ministry of Health from 1994 to 2000. The analytical approach was informed by feminist and cultural studies, taken from a post-structuralist and Foucauldian perspective. The research aimed to produce knowledge to support a critical reading of such education for HIV/AIDS prevention, especially concerning gender relations. The paper argues that knowledge and practices permeating the "safe sex negotiation" discourse incorporate, reproduce, and/or transmit hegemonic representations of masculinity and femininity and that these representations differentiate and highlight hierarchical positions of women in relation to men and/or women in relation to other women, producing and/or reinforcing prejudices and inequalities.

  3. Trans-jugular intrahepatic porto-systemic shunt placement for refractory ascites: a ‘real-world’ UK health economic evaluation

    PubMed Central

    Parker, Matthew J; Guha, Neil; Stedman, Brian; Hacking, Nigel; Wright, Mark

    2013-01-01

    Objective To assess the benefit of trans-jugular intrahepatic porto-systemic shunt (TIPS) placement for refractory ascites. Design A retrospective observational study of all patients undergoing TIPS for refractory ascites in our hospital between 2003 and 2012. Setting Secondary care. Patients Cirrhotic patients with refractory ascites. Main outcome measures We examined direct real-world (National Health Service) health related costs in the year before and after the TIPS procedure took place. Data were collected relating to the need for reintervention and hepatic encephalopathy. Results Data were available for 24 patients who underwent TIPS for refractory ascites (86% of eligible patients). TIPS was technically successful in all cases. Mean number of bed days in the year prior to TIPS was 30.3 and 14.3 in the year following (p=0.005). No patient had ascites at the end of the year after the TIPS with less requirement for paracentesis over the course of the year (p<0.001). Mean reduction in cost was £2759 per patient. TIPS was especially cost-effective in patients requiring between 6 and 12 drains per year with a mean saving of £9204 per patient. Conclusions TIPS is both a clinically effective and economically advantageous therapeutic option for selected patients with refractory ascites. PMID:28839725

  4. Change in Anopheles richness and composition in response to artificial flooding during the creation of the Jirau hydroelectric dam in Porto Velho, Brazil.

    PubMed

    Rodrigures, Moreno S; Batista, Elis P; Silva, Alexandre A; Costa, Fábio M; Neto, Verissimo A S; Gil, Luiz Herman S

    2017-02-22

    Anopheles mosquitoes are the only vectors of human malaria. Anopheles species use standing water as breeding sites. Human activities, like the creation of an artificial lake during the implementation of hydroelectric power plants, lead to changes in environmental characteristics and, therefore, may changes the species richness and composition of Anopheles mosquitoes. The aim of the present study was to verify whether or not there is an association between the artificial flooding resulting from the construction of the Jirau hydroelectric power plant, and the richness and composition of anophelines. Mosquitoes samples were obtained monthly from the Jirau hydroelectric power plant area located at Porto Velho, Rondônia State, using Human Landing Catch (06:00-10:00 PM). Mosquitoes collected were transported to Laboratório de Entomologia Médica FIOCRUZ-RO where they were identified until species using dichotomous key. A total of 6347 anophelines belonging to eight different species were collected. The anophelines species richness was significantly lower during the first flooding stage. Differences in anophelines species composition were found when comparing the first flooding stage with the other stages. Furthermore, the mean number of Anopheles darlingi, the main vector of malaria in the region, increases during the first and the third flooding stages. The continual monitoring of these vectors during the late operational phase may be useful in order to understand how anophelines will behave in this area.

  5. Concentrated arabinoxylan but not concentrated β-glucan in wheat bread has similar effects on postprandial insulin as whole-grain rye in porto-arterial catheterized pigs.

    PubMed

    Christensen, Kirstine L; Hedemann, Mette S; Lærke, Helle N; Jørgensen, Henry; Mutt, Shivaprakash J; Herzig, Karl-Heinz; Bach Knudsen, Knud E

    2013-08-14

    The acute glycemic effects of concentrated dietary fibers (DF) versus whole-grain rye were studied in porto-arterial catheterized pigs. Two white wheat breads with wheat arabinoxylan (AX) or oat β-glucan (BG), two rye breads with intact rye kernels (RK) or milled rye (GR), and a low DF white wheat bread were fed to six pigs in a randomized crossover design. Blood profiles were collected for 4 h after feeding. Glucose absorption was reduced in pigs fed the AX bread at 60 min postprandial (3.1 mmol/min for AX compared to 9.4 mmol/min for WF, P = 0.02) and insulin secretion was lowered at 30 min postprandial for AX and GR (74.4 and 129 pmol/min for AX and GR, respectively, compared to 738 pmol/min for WF, P < 0.04). In conclusion, the GR and AX breads were most effective in improving insulin economy, suggesting that arabinoxylan from wheat and rye induces similar outcomes in the metabolic response.

  6. Evaluation of natural foci of Panstrongylus megistus in a forest fragment in Porto Alegre, State of Rio Grande do Sul, Brazil.

    PubMed

    Santos Jr, José Eloy Dos; Viola, Mariana Gubert; Lorosa, Elias Seixas; Machado, Evandro Marques de Menezes; Ruas Neto, Antonio Leite; Corseuil, Elio

    2013-01-01

    Panstrongylus megistus is commonly found in wild environments of the State of Rio Grande do Sul, Brazil. The aim of this study was to characterize the network of refuges used by triatomine in a forest fragment of Porto Alegre and to identify Trypanosoma cruzi infection, associated hosts and the epidemiological importance of both hosts and triatomines. Techniques including the spool-and-line method and active searching (transects) were used to identify natural foci. The food source for each triatomine was determined using the precipitin test, and the infection of marsupials was determined by xenodiagnosis. A total of 33 adults (domestic environment) and 27 nymphs (wild environment) of P. megistus were found in addition to 43 Didelphis albiventris specimens. The infection rates of triatomine adults, triatomine nymphs and opossums with T. cruzi I were 64%, 73% and 69%, respectively. Birds, rodents and opossums were the main resources used by triatomine. This work presents the first characterization of a natural focus of P. megistus in Rio Grande do Sul. The natural characteristics of this focus and its implication in the transmission of T. cruzi are discussed.

  7. Ketamine does not inhibit interleukin-6 synthesis in hepatic resections requiring a temporary porto-arterial occlusion (Pringle manoeuvre): a controlled, prospective, randomized, double-blinded study

    PubMed Central

    Bonofiglio, Francisco Carlos; Molmenti, Ernesto P; de Santibañes, Eduardo

    2011-01-01

    Introduction Previous studies have shown that interleukin-6 (IL-6) levels correlated with mortality in critically ill patients. Goal To determine the effect of ketamine on IL-6 levels in liver resections patients with a temporary porto-arterial occlusion (Pringle manoeuvre). Materials and methods Controlled, prospective, randomized, double-blinded study. One group (n = 21) received ketamine whereas the other group (n = 17) received placebo. IL-6 levels were obtained at baseline, 4, 12, 24 h, 3 and 5 days. Results There were no significant differences in IL-6 levels between the groups (basal P = 089, 4 h P = 0.83, 12 h P = 0.39, 24 h, P = 0.55, 3 days P = 0.80 and 5 days P = 0.45). Both groups had elevated IL-6 levels that became almost undetectable by day 5. There was no major morbidity and no mortality in either group. Conclusions Ketamine does not seem to have an effect on plasma levels of IL-6. This could be interpreted as a potential finding associated with outcome as we did not encounter any deaths or major complications. Further studies will likely be needed to determine the range of IL-6 levels associated with survival and mortality, and whether it could be a predictor of survival. PMID:21929671

  8. Circulation of antibodies against yellow fever virus in a simian population in the area of Porto Primavera Hydroelectric Plant, São Paulo, Brazil.

    PubMed

    Lima, Maura Antonia; Romano-Lieber, Nicolina Silvana; Duarte, Ana Maria Ribeiro de Castro

    2010-01-01

    Yellow fever (YF) is an acute viral infectious disease transmitted by mosquitoes which occurs in two distinct epidemiological cycles: sylvatic and urban. In the sylvatic cycle, the virus is maintained by monkey's infection and transovarian transmission in vectors. Surveillance of non-human primates is required for the detection of viral circulation during epizootics, and for the identification of unaffected or transition areas. An ELISA (enzyme-linked immunosorbent assay) was standardized for estimation of the prevalence of IgG antibodies against yellow fever virus in monkey sera (Alouatta caraya) from the reservoir area of Porto Primavera Hydroelectric Plant, in the state of São Paulo, Brazil. A total of 570 monkey sera samples were tested and none was reactive to antibodies against yellow fever virus. The results corroborate the epidemiology of yellow fever in the area. Even though it is considered a transition area, there were no reports to date of epizootics or yellow fever outbreaks in humans. Also, entomological investigations did not detect the presence of vectors of this arbovirus infection. ELISA proved to be fast, sensitive, an adequate assay, and an instrument for active search in the epidemiological surveillance of yellow fever allowing the implementation of prevention actions, even before the occurrence of epizootics.

  9. Simulating Deforestation and Carbon Loss in Amazonia: Impacts in Brazil's Roraima State from Reconstructing Highway BR-319 (Manaus-Porto Velho)

    NASA Astrophysics Data System (ADS)

    Barni, Paulo Eduardo; Fearnside, Philip Martin; Graça, Paulo Maurício Lima de Alencastro

    2015-02-01

    Reconstruction of Highway BR-319 (Manaus-Porto Velho) would allow for access from the "arc of deforestation" in the southern part of Brazil's Amazon region to vast blocks of forests in central and northern Amazonia. Building roads is known to be a major driver of deforestation, allowing entry of squatters, and other actors. Rather than deforestation along the highway route, here we consider the road's potential for stimulating deforestation in a separate location, approximately 550 km north of BR-319's endpoint in Manaus. Reconstructing BR-319 has great potential impact to start a new wave of migration to this remote region. The southern portion of the state of Roraima, the focus of our study, is already connected to Manaus by Highway BR-174. We modeled deforestation in southern Roraima and simulated carbon emissions between 2007 and 2030 under four scenarios. Simulations used the AGROECO model in DINAMICA-EGO software. Two scenarios were considered with reconstruction of BR-319 and two without this road connection. For each of the two possibilities regarding BR-319, simulations were developed for (1) a "conservation" (CONSERV) scenario that assumes the creation of a series of protected areas, and (2) a "business-as-usual" (BAU) scenario that assumes no additional protected areas. Results show that by 2030, with BR-319 rebuilt, deforestation carbon emissions would increase between 19 % (CONSERV) and 42 % (BAU) over and above those corresponding to no-road scenarios.

  10. Parylene supported 20um*20um uncooled thermoelectric infrared detector with high fill factor

    NASA Astrophysics Data System (ADS)

    Modarres-Zadeh, Mohammad J.; Carpenter, Zachary S.; Rockley, Mark G.; Abdolvand, Reza

    2012-06-01

    Presented is a novel design for an uncooled surface-micromachined thermoelectric (TE) infrared (IR) detector. The detector features a P-doped polysilicon/Nichrome (Cr20-Ni80) thermocouple, which is embedded into a thin layer of Parylene-N to provide structural support. The low thermal conductivity (~0.1W/m.K), chemical resistance, and ease of deposition/patterning of Parylene-N make it an excellent choice of material for use in MEMS thermal detectors. This detector also features an umbrella-like IR absorber composed of a three layer stack of NiCr/SiN/NiCr to optimize IR absorption. The total device area is 20 um * 20 um per pixel with an absorber area of ~19 um * 19 um resulting in a fill factor of 90%. At room temperature, a DC responsivity of ~170V/W with a rise time of less than 8 ms is measured from the fabricated devices in vacuum when viewing a 500K blackbody without any concentrating optics. The dominant source of noise in thermoelectric IR detectors is typically Johnson noise when the detectors are operating in an open circuit condition. The fabricated detectors have resistances about 85KOhm which results in Johnson noise of about 38nV/Hz^0.5. The D* is calculated to be 9 * 106 cm*Hz0.5/ W. Preliminary finite element analysis indicates that the thermal conduction from the hot junction to the substrate through the TE wires is dominant ( GTE >> Gparylene) considering the fabricated dimensions of the parylene film and the TE wires. Thus, by further reducing the size of the TE wires, GTE can be decreased and hence, responsivity can be improved while the parylene film sustains the structural integrity of the cell.

  11. "Uh" and "Um" Revisited: Are They Interjections for Signaling Delay?

    ERIC Educational Resources Information Center

    O'Connell, Daniel C.; Kowal, Sabine

    2005-01-01

    Clark and Fox Tree (2002) have presented empirical evidence, based primarily on the London-Lund corpus (LL; Svartvik & Quirk, 1980), that the fillers "uh" and "um" are conventional English words that signal a speaker's intention to initiate a minor and a major delay, respectively. We present here empirical analyses of "uh" and "um" and of silent…

  12. "Uh" and "Um" Revisited: Are They Interjections for Signaling Delay?

    ERIC Educational Resources Information Center

    O'Connell, Daniel C.; Kowal, Sabine

    2005-01-01

    Clark and Fox Tree (2002) have presented empirical evidence, based primarily on the London-Lund corpus (LL; Svartvik & Quirk, 1980), that the fillers "uh" and "um" are conventional English words that signal a speaker's intention to initiate a minor and a major delay, respectively. We present here empirical analyses of "uh" and "um" and of silent…

  13. Source identification and seasonal variation of polycyclic aromatic hydrocarbons associated with atmospheric fine and coarse particles in the Metropolitan Area of Porto Alegre, RS, Brazil

    NASA Astrophysics Data System (ADS)

    Teixeira, Elba Calesso; Agudelo-Castañeda, Dayana M.; Fachel, Jandyra Maria Guimarães; Leal, Karen Alam; Garcia, Karine de Oliveira; Wiegand, Flavio

    2012-11-01

    The purpose of the present study was to evaluate the polycyclic aromatic hydrocarbons (PAHs) in fine (PM2.5) and coarse particles (PM2.5-10) in an urban and industrial area in the Metropolitan Area of Porto Alegre (MAPA), Brazil. Sixteen U.S. Environmental Protection Agency (EPA) priority polycyclic aromatic hydrocarbons (PAHs) were measured. Filters containing ambient air particulate were extracted with dichloromethane using Soxhlet. Extracts were later analyzed, for determining PAH concentrations, using a gaseous chromatograph coupled with a mass spectrometer (GC-MS). The polycyclic aromatic hydrocarbons (PAHs) were more concentrated in PM2.5 with an average of 70% of total PAHs in the MAPA. The target PAH apportionment among the main emission sources was carried out by diagnostic PAH concentration ratios, and principal component analysis (PCA). PAHs with higher molecular weight showed higher percentages in the fine particles in the MAPA. Based on the diagnostic ratios and PCA analysis, it may be concluded that the major contribution of PAHs was from vehicular sources (diesel and gasoline), especially in the PM2.5 fraction, as well as coal and wood burning. The winter/summer ratio in the PM2.5 and PM2.5-10 fractions in the MAPA was 3.1 and 1.8, respectively, revealing the seasonal variation of PAHs in the two fractions. The estimated toxicity equivalent factor (TEF), used to assess the contribution of the carcinogenic potency, confirms a significant presence of the moderately active carcinogenic PAHs BaP and DahA in the samples collected in the MAPA.

  14. Genotoxicity on Tradescantia pallida var. purpurea plants exposed to urban and rural environments in the metropolitan area of Porto Alegre, southern Brazil.

    PubMed

    Costa, G M; Droste, A

    2012-11-01

    The Trad-MCN bioassay was used to investigate the genotoxicity on Tradescantia pallida var. purpurea plants exposed to variations in the environmental conditions in urban and rural sites in the metropolitan area of Porto Alegre, southern Brazil, over a one-year period. In spring 2009 and in summer, autumn and winter 2010, potted plants of T. pallida var. purpurea were exposed at two sites with different characteristics: the urban area of the municipality of Estância Velha, with leather and footwear industrial activity, and a Site of Special Environmental Interest in the rural area of the municipality of Novo Hamburgo. Other plants comprised the control group and were kept indoors. Frequencies of micronuclei (MCN) were determined in early tetrads of pollen mother cells and expressed as MCN/100 tetrads. Climate data were also registered during the experiment. MCN frequencies in the urban area were significantly higher (up to 8.13) than those found in the rural area (up to 1.26) and in the control group (up to 1.10), which did not differ statistically from each other over the year. The higher MCN frequencies observed in the urban site can be attributed to air pollution, but also may have been influenced by microclimatic and daily thermal variation differences between sites. Higher temperatures recorded in spring and summer may have influenced MCN frequencies observed in the urban site. No clear relation was observed between rainfall and MCN frequencies. Similar and high relative humidity percentages were registered over the period of the study. Considering that the bioindicator plant presents an integrated response to abiotic factors such as pollutants and weather conditions, it can be used as an additional tool that can point to synergistic effects of environmental variables on organisms.

  15. Clinical Features and Treatment Outcomes of Patients with Drug-Resistant and Drug-Sensitive Tuberculosis: A Historical Cohort Study in Porto Alegre, Brazil

    PubMed Central

    Micheletti, Vania Celina Dezoti; Kritski, Afrânio Lineu; Braga, José Ueleres

    2016-01-01

    Purpose To evaluate the clinical features and treatment outcomes of patients with pulmonary tuberculosis, stratified by level of drug resistance. Methods This was a historical cohort study based on data from the II National Anti-Tuberculosis Drug Resistance Survey (2006–2007) collected at eight participating health care facilities in Porto Alegre, southern Brazil. The cohort was followed for 3 years after the start of treatment. Results Of 299 cases of smear-positive pulmonary tuberculosis included in the study, 216 (72.2%) were diagnosed at five public primary health care units and 83 (27.8%) at three public hospitals. Among these cases, the prevalence of drug-resistant tuberculosis was 14.4%, and that of multidrug-resistant tuberculosis was 4.7%. Overall, 32.0% of drug-resistant and 2.0% of multidrug-resistant cases occurred in previously treated patients. The most common comorbidity in the sample was HIV infection (26.2%). There was no association between drug-resistant or multidrug-resistant tuberculosis and sociodemographic variables. Cure was achieved in 66.7% of patients, and the default rate was 21.2%. The 2-month sputum conversion rate was 34.2%, and the relapse rate was 16.9%. Patients with drug-resistant tuberculosis had lower rates of cure (45.2%) and 2-month sputum conversion (25%), as well as a higher relapse rate (30.7%). Conclusion These results highlight the urgent need for a more effective TB control program in this geographical setting, with a major emphasis on treatment of drug-resistant and multidrug-resistant tuberculosis. PMID:27505633

  16. The Dynamics of Transmission and Spatial Distribution of Malaria in Riverside Areas of Porto Velho, Rondônia, in the Amazon Region of Brazil

    PubMed Central

    Katsuragawa, Tony Hiroshi; Gil, Luiz Herman Soares; Tada, Mauro Shugiro; de Almeida e Silva, Alexandre; Costa, Joana D'Arc Neves; da Silva Araújo, Maisa; Escobar, Ana Lúcia; Pereira da Silva, Luiz Hildebrando

    2010-01-01

    The study area in Rondônia was the site of extensive malaria epidemic outbreaks in the 19th and 20th centuries related to environmental impacts, with large immigration flows. The present work analyzes the transmission dynamics of malaria in these areas to propose measures for avoiding epidemic outbreaks due to the construction of two Hydroelectric Power Plants. A population based baseline demographic census and a malaria prevalence follow up were performed in two river side localities in the suburbs of Porto Velho city and in its rural vicinity. The quantification and nature of malaria parasites in clinical patients and asymptomatic parasite carriers were performed using microscopic and Real Time PCR methodologies. Anopheles densities and their seasonal variation were done by monthly captures for defining HBR (hourly biting rate) values. Main results: (i) malaria among residents show the riverside profile, with population at risk represented by children and young adults; (ii) asymptomatic vivax and falciparum malaria parasite carriers correspond to around 15% of adults living in the area; (iii) vivax malaria relapses were responsible for 30% of clinical cases; (iv) malaria risk for the residents was evaluated as 20–25% for vivax and 5–7% for falciparum malaria; (v) anopheline densities shown outdoors HBR values 5 to 10 fold higher than indoors and reach 10.000 bites/person/year; (vi) very high incidence observed in one of the surveyed localities was explained by a micro epidemic outbreak affecting visitors and temporary residents. Temporary residents living in tents or shacks are accessible to outdoors transmission. Seasonal fishermen were the main group at risk in the study and were responsible for a 2.6 fold increase in the malaria incidence in the locality. This situation illustrates the danger of extensive epidemic outbreaks when thousands of workers and secondary immigrant population will arrive attracted by opportunities opened by the Hydroelectric Power

  17. Chromium speciation and existing natural attenuation conditions in lagoonal and pond sediments in the former chemical plant of Porto-Romano (Albania)

    NASA Astrophysics Data System (ADS)

    Shtiza, A.; Swennen, R.; Tashko, A.

    2008-01-01

    Near the outskirts of the Albanian port of Durres on the Adriatic Coast, at a place called Porto Romano, an old chemical complex has been producing chromate salts for a period of ˜20 years (1972-1993). As a result large quantities of chromite ore processing residue (COPR) waste were released mainly as suspended particles and/or dissolved species in effluents, which settled in a decantation pond area, 200 × 250 m in size, east of the industrial plant. Unfortunately, pollutants were spread out with time. Knowing that chromium mobility and toxicity in natural settings is species dependent, the species characterization has been carried out in different sampling media (pond sediments, lagoonal sediments and water samples). Five pond profiles were sampled within the decantation area up to a depth of ˜1 m, till the underlying Quaternary lagoonal silty-clays were reached. Total Cr content is highly variable with values between 1,130 and 24,409 mg/kg which is clearly higher than the defined local background values for lagoonal silty-clays (198 mg/kg of Cr). Leaching of Cr(VI) especially occurs in the pond sediments, which are low in OC, CEC and clay content, under acidic and neutral pH conditions (e.g. up to ˜2,230 mg/kg Cr(VI) leached from a sample containing a total concentration of Cr 12,200 mg/kg). Moreover, leaching of the Cr(III) occurs only under strictly acidic conditions (maximum 1,144 mg/kg leached from a sample containing a total Cr-concentration of 17,608 mg/kg). In this study also a number of natural attenuation conditions (i.e. reaction with lagoonal clays rich in organic matter and iron as well as isomorphous substitution) have been recognized.

  18. The use of tree barks and human fingernails for monitoring metal levels in urban areas of different population densities of Porto Alegre, Brazil.

    PubMed

    da Silveira Fleck, Alan; Carneiro, Maria Fernanda Hornos; Barbosa, Fernando; Amantea, Sergio Luis; Rhoden, Claudia Ramos

    2017-01-01

    The aim of this study was to evaluate the use of tree barks as a bioindicator of atmospheric pollution in areas of contrasting population densities and to associate the levels of elements found in this bioindicator with those obtained in fingernail samples collected from students living in the same study areas. Tree bark samples were collected from urban areas near highways in regions with high (Area A), intermediate (Area B), and low (Area C) population densities of Porto Alegre, Brazil, and evaluated for chemical elements concentration. Since these areas also differed in traffic density, NO2 was measured by passive sampling. For a comparative purpose, the elements were also determined in fingernail samples collected from students living in the same areas. Accumulated elements were determined by inductively coupled plasma mass spectrometry (ICP-MS) and principal component analysis (PCA) was used as a tool in exploratory data analysis to identify possible sources. We found that Ba, Cd, Co, Cu, Mg, Mn, Ni, Pb, Sb, Sr, V, and Zn were at higher concentrations in tree barks in Area A, while Cd, Co, Cu, Mg, Mn, Ni, and Sr were at higher levels in students' fingernails of Area A as well. Furthermore, concentrations of elements found in barks were associated with those identified in fingernails collected from students living in the same areas. PCA demonstrated that vehicular traffic explained 66.4 % of the variance in tree bark and 50.8 % of the variance in fingernails. NO2 levels were significantly different among the areas, what is consistent with their respective vehicular flow and population density. In conclusion, we found conformance of elements levels accumulated in barks and fingernails at three monitoring areas with different profiles. The amount of traffic-related elements accumulated appears to be associated with the degree of urbanization and vehicular flow. Overall, data suggests a relationship between fingernails and tree bark as bioindicators of exposure

  19. Trace Elements in Ambient Air at Porto Metropolitan Area-Checking for Compliance with New European Union (EU) Air Quality Standards.

    PubMed

    Pinto, Edgar; Soares, Carlos; Couto, Cristina M C M; Almeida, Agostinho

    2015-01-01

    Because of the scientific evidence showing that arsenic (As), cadmium (Cd), and nickel (Ni) are human genotoxic carcinogens, the European Union (EU) recently set target values for metal concentration in ambient air (As: 6 ng/m(3), Cd: 5 ng/m(3), Ni: 20 ng/m(3)). The aim of our study was to determine the concentration levels of these trace elements in Porto Metropolitan Area (PMA) in order to assess whether compliance was occurring with these new EU air quality standards. Fine (PM2.5) and inhalable (PM10) air particles were collected from October 2011 to July 2012 at two different (urban and suburban) locations in PMA. Samples were analyzed for trace elements content by inductively coupled plasma-mass spectrometry (ICP-MS). The study focused on determination of differences in trace elements concentration between the two sites, and between PM2.5 and PM10, in order to gather information regarding emission sources. Except for chromium (Cr), the concentration of all trace elements was higher at the urban site. However, results for As, Cd, Ni, and lead (Pb) were well below the EU limit/target values (As: 1.49 ± 0.71 ng/m(3); Cd: 1.67 ± 0.92 ng/m(3); Ni: 3.43 ± 3.23 ng/m(3); Pb: 17.1 ± 10.1 ng/m(3)) in the worst-case scenario. Arsenic, Cd, Ni, Pb, antimony (Sb), selenium (Se), vanadium (V), and zinc (Zn) were predominantly associated to PM2.5, indicating that anthropogenic sources such as industry and road traffic are the main source of these elements. High enrichment factors (EF > 100) were obtained for As, Cd, Pb, Sb, Se, and Zn, further confirming their anthropogenic origin.

  20. BR-319: Brazil's Manaus-Porto Velho highway and the potential impact of linking the arc of deforestation to central amazonia.

    PubMed

    Fearnside, Philip M; de Alencastro Graça, Paulo Maurício Lima

    2006-11-01

    Brazil's BR-319 Highway linked Manaus, in the state of Amazonas, to Porto Velho, Rondônia, until it became impassable in 1988. Now it is proposed for reconstruction and paving, which would facilitate migration from the "Arc of Deforestation" in the southern part of the Amazon region to new frontiers farther north. The purpose of the highway, which is to facilitate transport to São Paulo of products from factories in the Manaus Free Trade Zone, would be better served by sending the containers by ship to the port of Santos. The lack of a land connection to Manaus currently represents a significant barrier to migration to central and northern Amazonia. Discourse regarding the highway systematically overestimates the highway's benefits and underestimates its impacts. A variety of changes would be needed prior to paving the highway if these potential impacts are to be attenuated. These include zoning, reserve creation, and increased governance in various forms, including deforestation licensing and control programs. More fundamental changes are also needed, especially the abandonment of the long-standing tradition in Brazil of granting squatters' rights to those who invade public land. Organizing Amazonian occupation in such a way that road construction and improvement cease to lead to explosive and uncontrolled deforestation should be a prerequisite for approval of the BR-319 and other road projects for which major impacts are expected. These projects could provide the impetus that is needed to achieve the transition away from appropriation of public land by both small squatters and by grileiros (large-scale illegal claimants). A delay in reconstructing the highway is advisable until appropriate changes can be effected.

  1. Tectonic triggering of slump sheets in the Upper Cretaceous carbonate succession of the Porto Selvaggio area (Salento peninsula, southern Italy): Synsedimentary tectonics in the Apulian Carbonate Platform

    NASA Astrophysics Data System (ADS)

    Mastrogiacomo, G.; Moretti, M.; Owen, G.; Spalluto, L.

    2012-08-01

    Soft-sediment deformation structures crop out in the Upper Cretaceous carbonate succession in Porto Selvaggio cove in the western Salento peninsula, Apulian foreland, southern Italy. The deformed interval is about 13 m thick and occurs between shallow-water limestones and dolostones formed in peritidal and shallow subtidal environments. It comprises well-bedded grey mudstones interlayered with dark grey laminated microbioclastic wackestones characterized by couplets of closely spaced dark and bright laminae marked by the parallel orientation of calcareous microbioclasts and thin-shelled bivalves. The low biological diversity, scarcity of burrowing biota, and presence of a well preserved fish fauna provide evidence of anoxic conditions occurring in morphological depressions within the platform, and a stagnant, stratified water body affected by weak bottom currents, indicating the sudden development of a localised and short-lived intraplatform basin. Two soft-sediment deformation horizons (slump sheets) separated by undeformed limestones with similar facies occur in this part of the succession. The lower, thicker slump sheet (1.0-1.3 m thick) contains asymmetric and box folds. Well-developed décollement surfaces (locally containing thick brecciated zones) cut the folds, forming small-scale thrust-sheets and indicating mixed plastic to brittle behaviour. The upper, thinner slump sheet (0.25-0.35 m thick) contains only asymmetric folds, indicating plastic behaviour only. The differences in deformation style are attributed to differences in facies. Measurements of fold-axis orientations in the slump sheets show that they moved in similar directions, recording the development of a local, gently dipping palaeoslope. Autogenic (internal) trigger mechanisms are ruled out by a detailed consideration of facies. The slump sheets were triggered by allogenic, tectonic effects, either the weakening of sediment by seismic activity or the tectonically induced steepening of slopes

  2. A model to optimize public health care and downstage breast cancer in limited-resource populations in southern Brazil. (Porto Alegre Breast Health Intervention Cohort)

    PubMed Central

    Caleffi, Maira; Ribeiro, Rodrigo A; Filho, Dakir L Duarte; Ashton-Prolla, Patrícia; Bedin, Ademar J; Skonieski, Giovana P; Zignani, Juliana M; Giacomazzi, Juliana; Franco, Luciane R; Graudenz, Márcia; Pohlmann, Paula; Fernandes, Jefferson G; Kivitz, Philip; Weber, Bernardete

    2009-01-01

    Background Breast cancer (BC) is a major public health problem, with rising incidence in many regions of the globe. Although mortality has recently dropped in developed countries, death rates are still increasing in some developing countries, as seen in Brazil. Among the reasons for this phenomenon are the lack of structured screening programs, a long waiting period between diagnosis and treatment, and lack of access to health services for a large proportion of the Brazilian population. Methods and design Since 2004, an intervention study in a cohort of women in Southern Brazil, denominated Porto Alegre Breast Health Intervention Cohort, is being conducted in order to test the effectiveness and cost-effectiveness of a model for BC early detection and treatment. In this study, over 4,000 women from underserved communities aged 40 to 69 years are being screened annually with mammography and clinical breast examination performed by a multidisciplinary team, which also involves nutritional counseling and genetic cancer risk assessment. Risk factors for BC development are also being evaluated. Active search of participants by lay community health workers is one of the major features of our program. The accrual of new participants was concluded in 2006 and the study will last for 10 years. The main goal of the study is to demonstrate significant downstaging of BC in an underserved population through proper screening, attaining a higher rate of early-stage BC diagnoses than usually seen in women diagnosed in the Brazilian Public Health System. Preliminary results show a very high BC incidence in this population (117 cases per 100,000 women per year), despite a low prevalence of classical risk factors. Discussion This study will allow us to test a model of BC early diagnosis and treatment and evaluate its cost-effectiveness in a developing country where the mortality associated with this disease is very high. Also, it might contribute to the evaluation of risk factors in a

  3. Spatial and temporal distribution of the zoobenthos community during the filling up period of Porto Primavera Reservoir (Paraná River, Brazil).

    PubMed

    Jorcin, A; Nogueira, M G; Belmont, R

    2009-02-01

    This study is part of the limnological monitoring undertaken by the Energy Company of the State of São Paulo (CESP) during the filling up process of the Porto Primavera Reservoir (Hydroelectric Power Plant Engenheiro Sérgio Motta). This reservoir, located in the high Paraná River between the States of São Paulo and Mato Grosso do Sul, is the fourth largest in the country. The first filling up phase started in December 1998 and the second phase in March 2001. Samples for benthic community and sediment characteristics analysis were quarterly collected between August of 1999 and November 2001 and also in August of 2002 (11 sampling campaigns). Samplings were carried out at 13 stations distributed in the reservoir, and at one point located downstream of the dam. 128 invertebrate taxa were identified, being Mollusca, Annelida, Insecta and Nematoda the dominant groups during almost the whole study period. Insecta was the best represented class (9 different orders), and Diptera contributed with higher number of taxa, 63. The exotic species of bivalve Corbicula fluminea was recorded in all sampling stations showing its great capacity to colonize new habitats in the neotropical region. Noticeable variations in the fauna density were observed, considering both different periods and locations. The maximum density of organisms (mean value of 7812 ind.m-2) was recorded in the center of the reservoir, and the minimum (mean value 9 ind.m-2) in the more lacustrine area near the dam. The greatest species richness per sample (24 taxa) was observed in the reservoir upstream (fluvial zone). The maximum diversity (Shannon-Wiener Index) per station/period, 3.82 and 3.86 bits.ind-1, were calculated in the transitional river/reservoir zone during the beginning (August 1999) and in the reservoir central zones in the end (August 2002) of the filling up period, respectively. There was no clear relation between the distribution of the different faunistic groups and the sediment

  4. Impact of transjugular intrahepatic porto-systemic shunt on post liver transplantation outcomes: Study based on the United Network for Organ Sharing database

    PubMed Central

    Mumtaz, Khalid; Metwally, Sherif; Modi, Rohan M; Patel, Nishi; Tumin, Dmitry; Michaels, Anthony J; Hanje, James; El-Hinnawi, Ashraf; Hayes Jr, Don; Black, Sylvester M

    2017-01-01

    AIM To determine the impact of transjugular intrahepatic porto-systemic shunt (TIPS) on post liver transplantation (LT) outcomes. METHODS Utilizing the United Network for Organ Sharing (UNOS) database, we compared patients who underwent LT from 2002 to 2013 who had underwent TIPS to those without TIPS for the management of ascites while on the LT waitlist. The impact of TIPS on 30-d mortality, length of stay (LOS), and need for re-LT were studied. For evaluation of mean differences between baseline characteristics for patients with and without TIPS, we used unpaired t-tests for continuous measures and χ2 tests for categorical measures. We estimated the impact of TIPS on each of the outcome measures. Multivariate analyses were conducted on the study population to explore the effect of TIPS on 30-d mortality post-LT, need for re-LT and LOS. All covariates were included in logistic regression analysis. RESULTS We included adult patients (age ≥ 18 years) who underwent LT from May 2002 to September 2013. Only those undergoing TIPS after listing and before liver transplant were included in the TIPS group. We excluded patients with variceal bleeding within two weeks of listing for LT and those listed for acute liver failure or hepatocellular carcinoma. Of 114770 LT in the UNOS database, 32783 (28.5%) met inclusion criteria. Of these 1366 (4.2%) had TIPS between the time of listing and LT. We found that TIPS increased the days on waitlist (408 ± 553 d) as compared to those without TIPS (183 ± 330 d), P < 0.001. Multivariate analysis showed that TIPS had no effect on 30-d post LT mortality (OR = 1.26; 95%CI: 0.91-1.76) and re-LT (OR = 0.61; 95%CI: 0.36-1.05). Pre-transplant hepatic encephalopathy added 3.46 d (95%CI: 2.37-4.55, P < 0.001), followed by 2.16 d (95%CI: 0.92-3.38, P = 0.001) by TIPS to LOS. CONCLUSION TIPS did increase time on waitlist for LT. More importantly, TIPS was not associated with 30-d mortality and re-LT, but it did lengthen hospital LOS after

  5. Infrared spectroscopic method for analysis of Mg 2Ca(SO 4) 3 in mixtures with MgSO 4 and/or CaSO 4

    NASA Astrophysics Data System (ADS)

    Smith, Duane H.; Seshadri, Kal S.

    1999-04-01

    Mg 2Ca(SO 4) 3 is prepared from, and may be found in, mixtures with MgSO 4 and CaSO 4. Such mixtures frequently occur in the ash produced by various types of coal combustion, especially in filter cakes from pressurized fluidized bed combustion with dolomite as a SO x sorbent. Previously, qualitative analyses could be performed for Mg 2Ca(SO 4) 3 in these mixtures, but no quantitative analytical method was available. An infrared spectroscopic method has been developed that provides reasonably quantitative results for Mg 2Ca(SO 4) 3, MgSO 4,and CaSO 4 in their mixtures.

  6. Ultra-high resolution polarization-sensitive optical coherence microscopy for brain imaging at 6 um, 3.4 um and 1.3 um resolution (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Wang, Hui; Akkin, Taner; Magnain, Caroline V.; Yaseen, Mohammad A.; Cramer, Avilash; Wang, Ruopeng; Sakadžic, Sava; Boas, David A.

    2016-03-01

    Neuroanatomical pathways form the basis for functional activity of brain circuits. In the past, we developed a polarization-sensitive optical coherence tomography with serial scanning to achieve large-scale brain imaging. The system was able to visualize 3D fiber tracts of ~20 um in diameter. To investigate the neuroanatomical pathways at finer scales, we have now built a polarization-maintaining fiber based ultra-high resolution polarization-sensitive optical coherence microscope (PS-OCM) at 1300 nm. The PS-OCM has an axial resolution of 3.5 um in tissue. The detection setup consists of two spectrometers, acquiring spectral interference on orthogonal polarization channels. With a single measurement, the setup generates four contrasts: reflectivity, cross-polarization, retardance and optic axis orientation. To investigate the capability of PS-OCM at different resolutions, we used three microscope objectives that yield lateral resolutions of 6.0 um, 3.4 um and 1.3 um. Blocks of formalin fixed mouse brain and human brain were scanned. The cross-polarization and retardance images clearly depict the neuronal fiber structures, which are comparable with that generated by the maximum projection of volumetric reflectivity data. The optic axis orientation quantifies the in-plane fiber orientation. With the lateral resolution of 1.3 um, the retardance contrast is weak in white matter due to the shallow depth of focus. Overall, the ultra-high resolution PS-OCM provides a new tool to reveal neuroanatomical maps in the brain at cellular resolution.

  7. Thermally stimulated luminescence studies of undoped, Cu- and Mn-doped CaSO4 compounds

    NASA Astrophysics Data System (ADS)

    Manam, J.; Das, S.

    Thermally stimulated luminescence (TSL) of undoped and doped CaSO4 with activators such as Cu and Mn has been investigated. The polycrystalline samples of undoped and doped CaSO4 are prepared by the melting method. The formation of CaSO4 compound is confirmed by X-ray diffraction and Fourier transform infrared studies. Scanning electron microscopic studies of CaSO4 are also carried out. The TSL glow curves of undoped CaSO4, Cu- and Mn-doped CaSO4 are studied. Comparison of the thermoluminescence (TL) intensity of the most intensive glow peak of Cu-doped CaSO4 compound with that of undoped CaSO4 shows that addition of Cu impurity in CaSO4 compound enhances the TL intensity by about four times. However, the addition of Mn impurity to undoped CaSO4 increases the TL intensity by about three times when compared with that of undoped CaSO4. The TL-dose dependence of all three samples was studied and was observed to be almost linear in the studied range of irradiation time. Among the samples studied, namely undoped CaSO4 and Cu- and Mn-doped CaSO4, Cu-doped CaSO4 is found to be the most sensitive. The trap parameters, namely order of kinetics (b), activation energy (E) and frequency factor (s) associated with the most intensive glow peaks of CaSO4:Mn, CaSO4:Cu and CaSO4 phosphors were determined using the glow curve shape (Chen's) method.

  8. Uh and um revisited: are they interjections for signaling delay?

    PubMed

    O'Connell, Daniel C; Kowal, Sabine

    2005-11-01

    Clark and Fox Tree (2002) have presented empirical evidence, based primarily on the London-Lund corpus (LL; Svartvik & Quirk, 1980), that the fillers uh and um are conventional English words that signal a speaker's intention to initiate a minor and a major delay, respectively. We present here empirical analyses of uh and um and of silent pauses (delays) immediately following them in six media interviews of Hillary Clinton. Our evidence indicates that uh and um cannot serve as signals of upcoming delay, let alone signal it differentially: In most cases, both uh and um were not followed by a silent pause, that is, there was no delay at all; the silent pauses that did occur after um were too short to be counted as major delays; finally, the distributions of durations of silent pauses after uh and um were almost entirely overlapping and could therefore not have served as reliable predictors for a listener. The discrepancies between Clark and Fox Tree's findings and ours are largely a consequence of the fact that their LL analyses reflect the perceptions of professional coders, whereas our data were analyzed by means of acoustic measurements with the PRAAT software (www.praat.org). A comparison of our findings with those of O'Connell, Kowal, and Ageneau (2005) did not corroborate the hypothesis of Clark and Fox Tree that uh and um are interjections: Fillers occurred typically in initial, interjections in medial positions; fillers did not constitute an integral turn by themselves, whereas interjections did; fillers never initiated cited speech, whereas interjections did; and fillers did not signal emotion, whereas interjections did. Clark and Fox Tree's analyses were embedded within a theory of ideal delivery that we find inappropriate for the explication of these phenomena.

  9. Studying CaSO4:Eu as an OSL phosphor

    NASA Astrophysics Data System (ADS)

    Guckan, Veysi; Altunal, Volkan; Nur, Necmettin; Depci, Tolga; Ozdemir, Adnan; Kurt, Kasim; Yu, Yan; Yegingil, Ihami; Yegingil, Zehra

    2017-09-01

    This study was carried out to investigate the properties of the OSL signal from Eu-doped calcium sulfate (CaSO4:Eu) phosphor and study on its thermal behavior as a function of temperature under a series of luminescence experiments. The suitability of its usage as an optically stimulated luminescence (OSL) dosimeter was also checked. CaSO4:Eu was synthesized using the precipitation method and prepared in pellet form. The dopant concentration value was performed as 0.1 mol%. The synthesized CaSO4:Eu was analyzed by X-ray diffraction (XRD) method to confirm the product. To have an idea about the crystallography and microstructure morphology of the material, scanning electron microscope (SEM) analysis were carried out. It was found that the OSL signal is a resultant signal having three components and exhibits thermal quenching above 150 °C. The excitation spectrum of CaSO4:Eu showed different peaks in the region 220-360 nm with the highest one at 269 nm. Thermoluminescence (TL) signals of CaSO4:Eu pellets were obtained and compared with the TL signals obtained after OSL measurements of the same pellets by blue light stimulation. The low temperature peak near 180 °C did not show any significant change in TL after OSL measurement whereas the high temperature peak at 240 °C was bleached with the blue light illumination and might be responsible for the observed OSL signal. The dosimetric properties such as dose response, minimum detectable dose, energy response, reusability, fading properties, thermal stability and effect of reading temperatures on OSL signals were examined. OSL signals of CaSO4:Eu pellets were decreased by approximately 8% at the end of the 24 h and by about 7% at the end of 28 days when compared with the first readout. The thermal stability of the ∼240 °C TL peak and OSL signal using isothermal decay measurements were used to determine the trap parameters. The CaSO4:Eu OSL dosimeter in accordance with the presented study allows a high

  10. QuorUM: An Error Corrector for Illumina Reads

    PubMed Central

    Marçais, Guillaume; Yorke, James A.; Zimin, Aleksey

    2015-01-01

    Motivation Illumina Sequencing data can provide high coverage of a genome by relatively short (most often 100 bp to 150 bp) reads at a low cost. Even with low (advertised 1%) error rate, 100 × coverage Illumina data on average has an error in some read at every base in the genome. These errors make handling the data more complicated because they result in a large number of low-count erroneous k-mers in the reads. However, there is enough information in the reads to correct most of the sequencing errors, thus making subsequent use of the data (e.g. for mapping or assembly) easier. Here we use the term “error correction” to denote the reduction in errors due to both changes in individual bases and trimming of unusable sequence. We developed an error correction software called QuorUM. QuorUM is mainly aimed at error correcting Illumina reads for subsequent assembly. It is designed around the novel idea of minimizing the number of distinct erroneous k-mers in the output reads and preserving the most true k-mers, and we introduce a composite statistic π that measures how successful we are at achieving this dual goal. We evaluate the performance of QuorUM by correcting actual Illumina reads from genomes for which a reference assembly is available. Results We produce trimmed and error-corrected reads that result in assemblies with longer contigs and fewer errors. We compared QuorUM against several published error correctors and found that it is the best performer in most metrics we use. QuorUM is efficiently implemented making use of current multi-core computing architectures and it is suitable for large data sets (1 billion bases checked and corrected per day per core). We also demonstrate that a third-party assembler (SOAPdenovo) benefits significantly from using QuorUM error-corrected reads. QuorUM error corrected reads result in a factor of 1.1 to 4 improvement in N50 contig size compared to using the original reads with SOAPdenovo for the data sets investigated

  11. QuorUM: An Error Corrector for Illumina Reads.

    PubMed

    Marçais, Guillaume; Yorke, James A; Zimin, Aleksey

    2015-01-01

    Illumina Sequencing data can provide high coverage of a genome by relatively short (most often 100 bp to 150 bp) reads at a low cost. Even with low (advertised 1%) error rate, 100 × coverage Illumina data on average has an error in some read at every base in the genome. These errors make handling the data more complicated because they result in a large number of low-count erroneous k-mers in the reads. However, there is enough information in the reads to correct most of the sequencing errors, thus making subsequent use of the data (e.g. for mapping or assembly) easier. Here we use the term "error correction" to denote the reduction in errors due to both changes in individual bases and trimming of unusable sequence. We developed an error correction software called QuorUM. QuorUM is mainly aimed at error correcting Illumina reads for subsequent assembly. It is designed around the novel idea of minimizing the number of distinct erroneous k-mers in the output reads and preserving the most true k-mers, and we introduce a composite statistic π that measures how successful we are at achieving this dual goal. We evaluate the performance of QuorUM by correcting actual Illumina reads from genomes for which a reference assembly is available. We produce trimmed and error-corrected reads that result in assemblies with longer contigs and fewer errors. We compared QuorUM against several published error correctors and found that it is the best performer in most metrics we use. QuorUM is efficiently implemented making use of current multi-core computing architectures and it is suitable for large data sets (1 billion bases checked and corrected per day per core). We also demonstrate that a third-party assembler (SOAPdenovo) benefits significantly from using QuorUM error-corrected reads. QuorUM error corrected reads result in a factor of 1.1 to 4 improvement in N50 contig size compared to using the original reads with SOAPdenovo for the data sets investigated. QuorUM is distributed

  12. Geomorphology and anthropogenic impact including military constraints in a microtidal wave-dominated embayment in south western Sardinia (Porto Pino beach, SCI ITB040025, Mediterranean Sea). Implications for beach management.

    NASA Astrophysics Data System (ADS)

    De Muro, Sandro; Buosi, Carla; Pusceddu, Nicola; Frongia, Paolo; Passarella, Marinella; Ibba, Angelo

    2016-04-01

    The coastal zones of the Mediterranean have undergone increasing pressure over the last century. The intensifying coastal development and the increasing tourist impact have led to an intense transformation of the coastlines and adjacent marine areas. The beach and the coastal dune play an important role in protecting the coastline. Thus, the study of its geomorphological evolution and of its anthropic modification is fundamental in order to adopt the best management practices. In this regard, the LIFE Project (LIFE13NAT/IT/001013) SOSS DUNES (Safeguard and management Of South-western Sardinian Dunes) aims to safeguard the dune habitats and the beach system in a site belonging to the Natura 2000 network, an EUwide network of nature protection areas established under the 1992 Habitats Directive. This project is focused on a microtidal wave-dominated embayment located in south western Sardinia (Italy, Mediterranean Sea) called Porto Pino beach comprised in the SCI (Site of Community Importance) "Promontory, dunes and wetland of Porto Pino (ITB040025)". This research aims to investigate the geomorphological processes, the evolution and the main human impacts on Porto Pino beach as an useful tool for both conservation and coastal management. The coastal area of Porto Pino is represented by sandy shorelines extending for a total length of 5 km characterized by a wide primary and secondary dune systems, a backshore wetland lagoon and marsh area arranged parallel to the coastline. This littoral area can be ideally divided into three parts: the first, about 600 m long, in the north-west part characterized by the highest human pressure due to touristic activity on the foredunes and deposition of beach wrack; the second part in the south-east, about 1100 m long, characterized by a complex dune system (primary and secondary foredunes); and the third southernmost part included in a military area, about 3300 m long, characterized by transgressive dune system with low human

  13. Universal Monitor (UM) for OTEC compact heat exchangers

    SciTech Connect

    Kuzay, T.M.

    1981-09-01

    Universal Monitor (UM), is a device-independent concept to measure, with precision, the initiation and progression of fouling in any given OTEC Compact Heat Exchanger model with or without the application of countermeasures. Design description and supporting analyses for the Universal Monitor for OTEC Compact Heat Exchangers are presented.

  14. The International Space Station Urine Monitoring System (UMS)

    NASA Technical Reports Server (NTRS)

    Feeback, Daniel L.; Cibuzar, Branelle R.; Milstead, Jeffery R.; Pietrzyk,, Robert A.; Clark, Mark S.F.

    2009-01-01

    A device capable of making in-flight volume measurements of single void urine samples, the Urine Monitoring System (UMS), was developed and flown on seven U.S. Space Shuttle missions. This device provided volume data for each urine void from multiple crewmembers and allowed samples of each to be taken and returned to Earth for post-flight analysis. There were a number of design flaws in the original instrument including the presence of liquid carry-over producing invalid "actual" micturition volumes and cross-contamination between successive users from residual urine in "dead" spots". Additionally, high or low volume voids could not be accurately measured, the on-orbit calibration and nominal use sequence was time intensive, and the unit had to be returned and disassembled to retrieve the volume data. These problems have been resolved in a new version, the International Space Station (ISS) UMS, that has been designed to provide real-time in-flight volume data with accuracy and precision equivalent to measurements made on Earth and the ability to provide urine samples that are unadulterated by the device. Originally conceived to be interfaced with a U.S.-built Waste Collection System (WCS), the unit now has been modified to interface with the Russian-supplied Sanitary Hygiene Device (ASY). The ISS UMS provides significant advantages over the current method of collecting urine samples into Urine Collection Devices (UCDs), from which samples are removed and returned to Earth for analyses. A significant future advantage of the UMS is that it can provide an interface to analytical instrumentation that will allow real-time measurement of urine bioanalytes allowing monitoring of crewmember health status during flight and the ability to provide medical interventions based on the results of these measurements. Currently, the ISS UMS is scheduled to launch along with Node-3 on STS-130 (20A) in December 2009. UMS will be installed and scientific/functional verification

  15. Genome analysis of Daldinia eschscholtzii strains UM 1400 and UM 1020, wood-decaying fungi isolated from human hosts

    DOE PAGES

    Chan, Chai Ling; Yew, Su Mei; Ngeow, Yun Fong; ...

    2015-11-18

    Background: Daldinia eschscholtzii is a wood-inhabiting fungus that causes wood decay under certain conditions. It has a broad host range and produces a large repertoire of potentially bioactive compounds. However, there is no extensive genome analysis on this fungal species. Results: Two fungal isolates (UM 1400 and UM 1020) from human specimens were identified as Daldinia eschscholtzii by morphological features and ITS-based phylogenetic analysis. Both genomes were similar in size with 10,822 predicted genes in UM 1400 (35.8 Mb) and 11,120 predicted genes in UM 1020 (35.5 Mb). A total of 751 gene families were shared among both UM isolates,more » including gene families associated with fungus-host interactions. In the CAZyme comparative analysis, both genomes were found to contain arrays of CAZyme related to plant cell wall degradation. Genes encoding secreted peptidases were found in the genomes, which encode for the peptidases involved in the degradation of structural proteins in plant cell wall. In addition, arrays of secondary metabolite backbone genes were identified in both genomes, indicating of their potential to produce bioactive secondary metabolites. Both genomes also contained an abundance of gene encoding signaling components, with three proposed MAPK cascades involved in cell wall integrity, osmoregulation, and mating/filamentation. Besides genomic evidence for degrading capability, both isolates also harbored an array of genes encoding stress response proteins that are potentially significant for adaptation to living in the hostile environments. In conclusion: Our genomic studies provide further information for the biological understanding of the D. eschscholtzii and suggest that these wood-decaying fungi are also equipped for adaptation to adverse environments in the human host.« less

  16. Genome analysis of Daldinia eschscholtzii strains UM 1400 and UM 1020, wood-decaying fungi isolated from human hosts

    SciTech Connect

    Chan, Chai Ling; Yew, Su Mei; Ngeow, Yun Fong; Na, Shiang Ling; Lee, Kok Wei; Hoh, Chee-Choong; Yee, Wai-Yan; Ng, Kee Peng

    2015-11-18

    Background: Daldinia eschscholtzii is a wood-inhabiting fungus that causes wood decay under certain conditions. It has a broad host range and produces a large repertoire of potentially bioactive compounds. However, there is no extensive genome analysis on this fungal species. Results: Two fungal isolates (UM 1400 and UM 1020) from human specimens were identified as Daldinia eschscholtzii by morphological features and ITS-based phylogenetic analysis. Both genomes were similar in size with 10,822 predicted genes in UM 1400 (35.8 Mb) and 11,120 predicted genes in UM 1020 (35.5 Mb). A total of 751 gene families were shared among both UM isolates, including gene families associated with fungus-host interactions. In the CAZyme comparative analysis, both genomes were found to contain arrays of CAZyme related to plant cell wall degradation. Genes encoding secreted peptidases were found in the genomes, which encode for the peptidases involved in the degradation of structural proteins in plant cell wall. In addition, arrays of secondary metabolite backbone genes were identified in both genomes, indicating of their potential to produce bioactive secondary metabolites. Both genomes also contained an abundance of gene encoding signaling components, with three proposed MAPK cascades involved in cell wall integrity, osmoregulation, and mating/filamentation. Besides genomic evidence for degrading capability, both isolates also harbored an array of genes encoding stress response proteins that are potentially significant for adaptation to living in the hostile environments. In conclusion: Our genomic studies provide further information for the biological understanding of the D. eschscholtzii and suggest that these wood-decaying fungi are also equipped for adaptation to adverse environments in the human host.

  17. Assessment of Tropical Cyclone Track Forecast Errors using GDAPS (UM)

    NASA Astrophysics Data System (ADS)

    Kim, D.; Kim, J.; Chang, K.; Byun, K.; Lee, J.

    2013-12-01

    After the Joint Typhoon Warning Center (JTWC) began issuing official five-day tropical cyclone (TC) forecasts in 2003, the Korea Meteorological Administration (KMA) started issuing official five-day forecasts of TCs in May 2012 after 2 year of beta test. Forming a selective consensus (SCON) by proper removal of a likely erroneous track forecast is hypothesized to be more accurate than the non-selective consensus (NCON) of all model tracks that are used for the five-day forecasts. Conceptual models describing large track error mechanisms, which are related to known tropical cyclone motion processes being misrepresented in the dynamical models, are applied to forecasts during the 2012 western North Pacific typhoon season by the Global Data Assimilation and Prediction System (GDAPS (UM N512 L70)) which is KMA's main operational model. GDAPS (UM) is one of consensus members used in making KMA's five-day forecasts and thus analysis of its track error tendencies would be useful for forming a SCON forecast. All 72-h track errors greater than 320 km are examined on the basis of the approach developed by Carr and Elsberry (2000a, b). Tropical-influenced error sources caused 37% (47 times / 126 erroneous forecasts) of the GDAPS (UM) large track forecast errors primarily because an incorrect beta effect-related process depicted by the model contributed to the erroneous forecasts. Midlatitude-influenced error sources accounted for 63% (79 times / 126 error cases) in the GDAPS (UM) erroneous forecasts mainly due to an incorrect forecast of the midlatitude system evolutions. It is proposed that KMA will be able to issue more reliable TC track information if a likely model track error is recognized by optimum use of conceptual models by Carr and Elsberry (2000a, b) and a selective consensus track is then the basis for an improved warning.

  18. Recombination luminescence of CaSO4:Tb3+ and CaSO4:Gd3+phosphors

    NASA Astrophysics Data System (ADS)

    Kudryavtseva, Irina; Lushchik, Aleksandr; Maaroos, Aarne; Azmaganbetova, Zhannur; Nurakhmetov, Turlybek; Salikhoja, Zhussupbek

    2012-08-01

    A comparative study of the excitation of luminescence by VUV radiation as well as of thermally and photostimulated luminescence has been carried out for CaSO4:Tb3+ and CaSO4:Gd3+ phosphors, where Na+ or F- ions are used for charge compensation. The distinction in hole processes for the phosphors with Na+ or F- compensators is determined by the differing thermal stability of the holes localized at/near Tb3+Na+ and Gd3+Na+ (up to 100-160 K) or at/near Tb3+F- V Ca and Gd3+F- V Ca centers involving also a cation vacancy (up to 400-550 K). Tunnel luminescence in the pairs of localized electrons and holes nearby Tb3+ or Gd3+ has been detected. The mechanisms of electron-hole, hole-electron and tunnel recombination luminescence as well as a subsequent released energy transfer to RE3+ ions are considered.

  19. STS-40 Exp. No. 192 urine monitoring system (UMS) on OV-102's middeck

    NASA Technical Reports Server (NTRS)

    1991-01-01

    STS-40 Experiment No. 192, Fluid-Electrolyte Regulation During Space Flight, urine monitoring system (UMS) is set up on the middeck of Columbia, Orbiter Vehicle (OV) 102, at the side hatch. The UMS is attached to OV-102's waste collection system (WCS). The urine specimen tray with sample tubes appears to the right of the UMS equipment.

  20. The binary system K2SO4CaSO4

    USGS Publications Warehouse

    Rowe, J.J.; Morey, G.W.; Hansen, I.D.

    1965-01-01

    The binary system K2SO4CaSO4 was studied by means of heating-cooling curves, differential thermal analysis, high-temperature quenching technique and by means of a heating stage mounted on an X-ray diffractometer. Compositions and quench products were identified optically and by X-ray. Limited solid solution of CaSO4 in K2SO4 was found. There is a eutectic at 875??C and 34 wt. per cent CaSO4. Calcium langbeinite melts incongruently at 1011??C. The melting-point of CaSO4 (1462??C) was determined by the quenching technique using sealed platinum tubes. The only intermediate crystalline phase found in the system is K2SO4??2CaSO4 (calcium langbeinite). ?? 1965.

  1. ESR and TL mechanism in CaSO4 : Ag co-doped phosphors

    NASA Astrophysics Data System (ADS)

    Dhabekar, Bhushan; Menon, Sanjeev; Alagu Raja, E.; Sanaye, S. S.; Gundu Rao, T. K.; Bhatt, B. C.; Kher, R. K.

    2006-06-01

    Thermoluminescence (TL) studies have been carried out on CaSO4 : Mn, CaSO4 : Ag,Mn, CaSO4 : Ag,Nd, CaSO4 : Ag,Mn,Nd, CaSO4 : Ag,Zr and CaSO4 : Ag,Mn,Zr phosphors. It is found that TL at 360 °C in CaSO4 : Ag,Mn,Nd is about 40 times that of CaSO4 : Ag,Mn and about 170 times that of CaSO4 : Ag,Nd. This shows that the presence of an efficient luminescent centre (Mn2+) as well as a trivalent impurity (such as Nd3+ or Y3+) is important for enhancement of TL at 360 °C in the CaSO4 : Ag,Mn,Nd phosphor system. Electron spin resonance (ESR) studies show that the peak at 360 °C correlates with an Ag2+ centre formed due to γ-irradiation and observable only below -170 °C. The Ag2+ centre is characterized by an axial g-tensor with principal values g|| = 2.38 and gbottom = 2.41. ESR studies further indicate that the precursor to a centre observable at low temperature (-170 °C) appears to act as the recombination centre for the TL peak at 360 °C. The low temperature centre is characterized by the g-values g|| = 2.0023 and gbottom = 2.0038 and is assigned to the SO_{3}^{ - } radical.

  2. STAR CLUSTER COMPLEXES AND THE HOST GALAXY IN THREE H II GALAXIES: Mrk 36, UM 408, AND UM 461

    SciTech Connect

    Lagos, P.; Telles, E.; Nigoche-Netro, A.

    2011-11-15

    We present a stellar population study of three H II galaxies (Mrk 36, UM 408, and UM 461) based on the analysis of new ground-based high-resolution near-infrared J, H, and K{sub p} broadband and Br{gamma} narrowband images obtained with Gemini/NIRI. We identify and determine the relative ages and masses of the elementary star clusters and/or star cluster complexes of the starburst regions in each of these galaxies by comparing the colors with evolutionary synthesis models that include the contribution of stellar continuum, nebular continuum, and emission lines. We found that the current star cluster formation efficiency in our sample of low-luminosity H II galaxies is {approx}10%. Therefore, most of the recent star formation is not in massive clusters. Our findings seem to indicate that the star formation mode in our sample of galaxies is clumpy, and that these complexes are formed by a few massive star clusters with masses {approx}>10{sup 4} M{sub Sun }. The age distribution of these star cluster complexes shows that the current burst started recently and likely simultaneously over short timescales in their host galaxies, triggered by some internal mechanism. Finally, the fraction of the total cluster mass with respect to the low surface brightness (or host galaxy) mass, considering our complete range in ages, is less than 1%.

  3. Resultados do desenvolvimento de um propulsor à plasma no Brasil

    NASA Astrophysics Data System (ADS)

    Ferreira, I. S.; Ferreira, J. L.

    2003-08-01

    Uma das partes mais importantes de um satélite é o controle de atitude do mesmo. E se tratando de um satélite científico, a atenção para este sistema deve ser redobrada. Uma possibilidade atraente para executar esta tarefa é a propulsão elétrica. Aqui, mostraremos resultados obtidos pelo propulsor à plasma PHALL-01, desenvolvido na Universidade de Brasília entre 2000 e 2003. Este é derivado do propulsor russo SPT-100 (Stationary Plasma Thruster), mas com o emprego inovador de um arranjo de imãs permanentes como fonte do campo magnético, este último o agente da aceleração do plasma. Esta alteração foi motivada pelo objetivo de que o mesmo operasse com o mínimo de potência elétrica. A partir da formulação teórica do mecanismo de aceleração, tendo como base as equações da magnetohidrodinâmica, pode-se obter vínculos sob os quais o propulsor pudesse ser construído. O mais forte destes é o que dita a topologia do campo magnético. Sendo assim, foram realizadas simulações computacionais, que definiram a geometria do propulsor. Após construído, este foi diagnosticado usando-se sondas de Langmuir e analisadores de energia. Como resultados, obtivemos a distribuição espacial da temperatura, densidade e potencial do plasma, bem como a distribuição angular do feixe produzido pelo mesmo em vários regimes de operação. O espectro de energia do feixe de plasma também foi medido, indicando íons de até 560eV. Combinando estes resultados, calculou-se o empuxo do propulsor: 84mN; e o impulso específico: 1083s. Estes demonstram que o mesmo estará qualificado, num futuro próximo, para o emprego no controle de atitude de satélites científicos, ou até mesmo como parte do conjunto propulsor primário, responsáveis pela transferência de órbitas.

  4. The ternary system K2SO4MgSO4CaSO4

    USGS Publications Warehouse

    Rowe, J.J.; Morey, G.W.; Silber, C.C.

    1967-01-01

    Melting and subsolidus relations in the system K2SO4MgSO4CaSO4 were studied using heating-cooling curves, differential thermal analysis, optics, X-ray diffraction at room and high temperatures and by quenching techniques. Previous investigators were unable to study the binary MgSO4CaSO4 system and the adjacent area in the ternary system because of the decomposition of MgSO4 and CaSO4 at high temperatures. This problem was partly overcome by a novel sealed-tube quenching method, by hydrothermal synthesis, and by long-time heating in the solidus. As a result of this study, we found: (1) a new compound, CaSO4??3MgSO4 (m.p. 1201??C) with a field extending into the ternary system; (2) a high temperature form of MgSO4 with a sluggishly reversible inversion. An X-ray diffraction pattern for this polymorphic form is given; (3) the inversion of ??-CaSO4 (anhydrite) to ??-CaSO4 at 1195??C, in agreement with grahmann; (1) (4) the melting point of MgSO4 is 1136??C and that of CaSO4 is 1462??C (using sealed tube methods to prevent decomposition of the sulphates); (5) calcium langbeinite (K2SO4??2CaSO4) is the only compound in the K2SO4CaSO4 binary system. This resolved discrepancies in the results of previous investigators; (6) a continuous solid solution series between congruently melting K2SOP4??2MgSO4 (langbeinite) and incongruently melting K2SO4??2CaSO4 (calcium langbeinite); (7) the liquidus in the ternary system consists of primary phase fields of K2SO4, MgSO4, CaSO4, langbeinite-calcium langbeinite solid solution, and CaSO4??3MgSO4. The CaSO4 field extends over a large portion of the system. Previously reported fields for the compounds (K2SO4??MgSO4??nCaSO4), K2SO4??3CaSO4 and K2SO4??CaSO4 were not found; (8) a minimum in the ternary system at: 740??C, 25% MgSO4, 6% CaSO4, 69% K2SO4; and ternary eutectics at 882??C, 49% MgSO4, 19% CaSO4, 32% K2SO4; and 880??, 67??5% MgSO4, 5% CaSO4, 27??5% K2SO4. ?? 1967.

  5. A retrospective analysis of the impact of diastolic dysfunction on one-year mortality after transjugular intrahepatic porto-systemic shunt, liver transplantation and non-transplant abdominal surgery in patients with cirrhosis

    PubMed Central

    Shounak, Majumder; Vimal, Rabdiya; Colin, Swales; David I, Silverman

    2015-01-01

    Background The incidence of diastolic dysfunction (DD) approaches 40% in patients with cirrhosis. However, the clinical impact of DD remains a subject of considerable debate. Surgery in patients with cirrhosis is innately hazardous. Diastolic heart failure has been linked to increased mortality after transjugular intrahepatic porto-systemic shunt surgery (TIPSS). To date, none of the commonly accepted preoperative risk assessment models applied to patients with liver disease incorporates DD. We aimed to examine the relationship between DD and postoperative outcomes in patients with cirrhosis undergoing abdominal surgery. Methods Patients with cirrhosis who underwent abdominal surgery between January 2000 and December 2011 were included if they had preoperative echocardiography done within 3 months of surgery. The echocardiographic images were reviewed using flow and tissue Doppler techniques to identify the presence of DD. Outcomes analyzed included one-year mortality and postoperative complications. Results A total of 140 patients were included in the study of which 63 patients (45%) met pre-established criteria for DD. Those with DD were older (P < 0.005) and less likely to have an isolated viral etiology of cirrhosis (P<0.05). The one-year mortality rate was 22.2% (14/63) in patients with DD and 20.8% (16/77) in those without DD (P=0.42). Postoperative complications were not statistically different in the two groups. Conclusion DD is common in patients with cirrhosis. In patients with cirrhosis undergoing TIPS and/or abdominal surgery, the presence of DD does not increase post-procedure complications or one-year mortality. PMID:26129720

  6. Recovery Act: Novel Kerf-Free PV Wafering that provides a low-cost approach to generate wafers from 150um to 50um in thickness

    SciTech Connect

    Fong, Theodore E.

    2013-05-06

    The technical paper summarizes the project work conducted in the development of Kerf-Free silicon wafering equipment for silicon solar wafering. This new PolyMax technology uses a two step process of implantation and cleaving to exfoliate 50um to 120um wafers with thicknesses ranging from 50um to 120um from a 125mm or 156mm pseudo-squared silicon ingot. No kerf is generated using this method of wafering. This method of wafering contrasts with the current method of making silicon solar wafers using the industry standard wire saw equipment. The report summarizes the activity conducted by Silicon Genesis Corporation in working to develop this technology further and to define the roadmap specifications for the first commercial proto-type equipment for high volume solar wafer manufacturing using the PolyMax technology.

  7. Report to the Maryland General Assembly on UMS Institutional and System Identities.

    ERIC Educational Resources Information Center

    Maryland Univ. System Administration, Adelphi.

    This report examines the use of the name "University of Maryland System" (UMS) to characterize the state's university system and its 13 institutions. It is noted that the UMS name is somewhat misleading, in that it suggests that the system comprises only the seven institutions with "University of Maryland" in their name. The…

  8. Adults Return to Mathematics: A Proposed Project in Uganda by the Uganda Mathematical Society (UMS).

    ERIC Educational Resources Information Center

    Kaahwa, Janet

    This paper provides information on a project by the Uganda Mathematical Society (UMS) that aims to popularize mathematics in Uganda. UMS believes that if parents learn mathematics (primary and secondary), they will be able to help their children themselves instead of hiring others to coach their children as is the practice today. Another way to…

  9. Unit 5, STA. 50+00+RB, Orner Building, First U.M. Church Rectory, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Unit 5, STA. 50+00+RB, Orner Building, First U.M. Church Rectory, & First U.M. Church-context - Johnstown Local Flood Protection Project, Beginning on Conemaugh River approx 3.8 miles downstream from confluence of Little Conemaugh & Stony Creek Rivers at Johnstown, Johnstown, Cambria County, PA

  10. EPCR expression marks UM171-expanded CD34(+) cord blood stem cells.

    PubMed

    Fares, Iman; Chagraoui, Jalila; Lehnertz, Bernhard; MacRae, Tara; Mayotte, Nadine; Tomellini, Elisa; Aubert, Léo; Roux, Philippe P; Sauvageau, Guy

    2017-06-22

    A small subset of human cord blood CD34(+) cells express endothelial protein C receptor (EPCR/CD201/PROCR) when exposed to the hematopoietic stem cell (HSC) self-renewal agonist UM171. In this article, we show that EPCR-positive UM171-treated cells, as opposed to EPCR-negative cells, exhibit robust multilineage repopulation and serial reconstitution ability in immunocompromised mice. In contrast to other stem cell markers, such as CD38, EPCR expression is maintained when cells are introduced in culture, irrespective of UM171 treatment. Although engineered overexpression of EPCR fails to reproduce the effects of UM171 on HSC activity, its expression is required for the repopulating activity of human HSCs. Altogether, our results indicate that EPCR is a reliable and cell culture-compatible marker of UM171-expanded human cord blood HSCs. © 2017 by The American Society of Hematology.

  11. HD 208905: um sistema múltiplo de estrelas quentes

    NASA Astrophysics Data System (ADS)

    Candeias, J. P.; Daflon, S.; Cunha, K.

    2003-08-01

    Durante o survey de associações OB do disco Galáctico, foi constatada a multiplicidade do sistema HD 208905, pertencentes à associação de Cep OB2. Este objeto está classificado como uma estrela pertencente a um sistema múltiplo, com magnitude mv = 7.0 e tipo espectral B1V. De fato, os espectros de HD 208905 apresentam perfis de absorção triplicados. Dois dos perfis são bastante similares entre si, e são estreitos e bem definidos, sugerindo que as velocidades rotacionais projetadas (v sin i) das duas estrelas são baixas. Os espectros obtidos também apresentam perfis mais alargados que poderiam ser atribuídos a uma terceira componente estelar com v sin i mais alto. A análise de HD 208905 é baseada no estudo da variação da posição relativa dos perfis espectrais de acordo com a fase do sistema. Nossos dados observacionais são um conjunto de espectros de alta resolução obtidos no McDonald Observatory (Universidade do Texas, Austin), Kitt Peak National Observatory e Palomar Observatory, cobrindo o período de 10/91 até 12/95. Inicialmente, calculamos a velocidade radial de cada componente do sistema, considerando o desvio Doppler sofrido por cada estrela. As velocidades radiais medidas foram, em seguida, corrigidas para velocidades radiais heliocêntricas. O passo seguinte constituiu na determinação da periodicidade da série temporal definida pelas medidas das velocidades radiais heliocêntricas através da análise de Fourier. A nossa base de dados não permitiu definir uma solução única para o sistema HD 208905. As possíveis soluções encontradas têm períodos entre 1 e 27 dias e serão apresentadas e discutidas.

  12. Delayed diagnosis and associated factors among new pulmonary tuberculosis patients diagnosed at the emergency department of a tertiary care hospital in Porto Alegre, South Brazil: a prospective patient recruitment study

    PubMed Central

    2013-01-01

    Background Control of tuberculosis (TB) depends on early diagnosis and treatment at the primary health care level. However, many patients are still diagnosed late with TB at hospitals. The present study aimed to investigate the delay in diagnosis of TB patients at the emergency department. Methods This was a prospective study in a general, tertiary care, university-affiliated hospital of a city with a high prevalence of TB in Brazil. New TB patients ≥ 14 years diagnosed with pulmonary TB at the emergency department of Hospital de Clínicas de Porto Alegre were prospectively recruited between February 2010 and January 2012. The consenting patients meeting our inclusion criteria were interviewed using a pre-tested questionnaire. We evaluated the delay in time until diagnosis and identified factors associated with delayed diagnosis (patient and health care system delays). Results We included 153 patients. The median total time of delay, patient delay, and health care system delay were 60 (interquartile range [IQR]: 30–90.5 days), 30 (lQR: 7–60 days), and 18 (IQR: 9–39.5 days) days, respectively. The factors that were independently associated with patient delay (time ≥ 30 days) were crack (odds ratio [OR] = 4.88, p = 0.043) and cocaine (OR = 6.68, p = 0.011) use. The factors that were independently associated with health care system delay (time ≥ 18 days) were weight loss (OR = 2.76, p = 0.025), miliary pattern (OR = 5.33, p = 0.032), and fibrotic changes (OR = 0.12, p = 0.013) on chest X-ray. Conclusions Patient delay appears to be the main problem in this city with a high prevalence of TB in Brazil. The main factor associated with patient delay is drug abuse (crack and cocaine). Our study shows substance abuse programs need to be aware of control of TB, with health interventions focusing on TB education programs. PMID:24219185

  13. Time Variable Associated Absorption in the QSO UM 675

    NASA Astrophysics Data System (ADS)

    Hamann, F. W.; Barlow, T. A.; Beaver, E. A.; Burbidge, E. M.; Cohen, R. D.; Junkkarinen, V. T.; Lyons, R. W.

    1994-05-01

    We discuss dramatic changes in the z_a ~ z_e absorption system of the z_e = 2.15 QSO UM 675 (Q0150-203). The C IV lambda 1550 and N V lambda 1240 doublets at z_a = 2.1344 strengthened by a factor of ~ 3 between the observations of Sargent, Boksenberg and Steidel (1988, ApJS, 68, 539; measured November 1981) and our earliest measurements (November and December 1990). During this time, C IV in the z_a = 2.0083 system may also have strengthened. The variability of other lines in these systems is unknown. Continued monitoring is in progress. We consider several models of the z_a ~ z_e absorption environment, and conclude that the absorbing clouds are close to the QSO and photoionized by the QSO continuum. The variability timescale (<~2.9 yrs rest) requires gas densities gap 4000 cm(-3) to allow changes in the ionization balance. This minimum density, and the high ionization needed to produce the Ne VIII lambda 774 and O VI lambda 1035 absorptions reported previously (E. M. Burbidge et al., 1993, BAAS, 24, 1135), requires clouds <~200 pc from the QSO. The full range of absorption line ionizations (including C III lambda 977 and N III lambda 989) implies that the clouds are segregated, spanning a factor of gap 10 in distance or gap 100 in density. Across these regions the H I fraction varies from ~ 10(-3) to ~ 10(-6) . The total hydrogen column ranges from a few times 10(18) cm(-2) in the low ionization gas to ~ 10(20) cm(-2) where the Ne VIII lines form. The Lyman continuum is expected to be optically thin throughout, consistent with the measured absence of a Lyman edge. The metal abundances are roughly solar or above. Implications of these results are discussed. This work is supported by NASA grant NAG 5-1630.

  14. VizieR Online Data Catalog: Draco nebula Herschel 250um map (Miville-Deschenes+, 2017)

    NASA Astrophysics Data System (ADS)

    Miville-Deschenes, M.-A.; Salome, Q.; Martin, P. G.; Joncas, G.; Blagrave, K.; Dassas, K.; Abergel, A.; Beelen, A.; Boulanger, F.; Lagache, G.; Lockman, F. J.; Marshall, D. J.

    2017-03-01

    Draco was observed with Herschel PACS (110 and 170um) and SPIRE (250, 350 and 500um) as part of the open-time program "First steps toward star formation: unveiling the atomic to molecular transition in the diffuse interstellar medium" (P.I. M-A Miville-Deschenes). A field of 3.85x3.85 was observed in parallel mode. Unfortunately, an error occurred during the acquisition of the PACS data making them unusable. Therefore, the results presented here are solely based on SPIRE data, especially the 250um map that has the highest angular resolution. (2 data files).

  15. Engineering Students' Assessment at University of Porto

    ERIC Educational Resources Information Center

    Soeiro, Alfredo; Cabral, Jose Sarsfield

    2004-01-01

    The issue of addressing innovation and change in engineering students' assessment is the target of this paper. The contents are an overview of the issues related to the evolution of the engineering learning requirements, a review of the traditional student evaluation methods in practice, a description of a current experiment in engineering student…

  16. Ground-based observation of the Venus 1.27-um O2 airglow

    NASA Astrophysics Data System (ADS)

    Ohtsuki, S.; Iwagami, N.; Sagawa, H.; Kasaba, Y.; Ueno, M.; Imamura, T.

    We conducted near-infrared imaging spectroscopy of the nightside of Venus at Okayama Astrophysical Observatory Japan on December 11, 2002. The 1.3-um spectra show 1.27-um O_2 IRA (0,0) airglow feature and thermal emission from the lower atmosphere. The brightest airglow feature of 5MR is found at the anti-solar point, which agrees with the previous studies. The hemispheric distribution of 1.3-um thermal emission shows equatorial depression similar to that of the 2-um region in previous studies. The hemispheric distribution of the rotational temperature shows a hot region at around the anti-solar point overlapping the bright region, and which suggests adiabatic heating due to the downward flow.

  17. UM206, a selective Frizzled antagonist, attenuates adverse remodeling after myocardial infarction in swine.

    PubMed

    Uitterdijk, André; Hermans, Kevin C M; de Wijs-Meijler, Daphne P M; Daskalopoulos, Evangelos P; Reiss, Irwin K; Duncker, Dirk J; Matthijs Blankesteijn, W; Merkus, Daphne

    2016-02-01

    Modulation of Wnt/Frizzled signaling with UM206 reduced infarct expansion and prevented heart failure development in mice, an effect that was accompanied by increased myofibroblast presence in the infarct, suggesting that Wnt/Frizzled signaling has a key role in cardiac remodeling following myocardial infarction (MI). This study investigated the effects of modulation of Wnt/Frizzled signaling with UM206 in a swine model of reperfused MI. For this purpose, seven swine with MI were treated with continuous infusion of UM206 for 5 weeks. Six control swine were treated with vehicle. Another eight swine were sham-operated. Cardiac function was determined by echo in awake swine. Infarct mass was estimated at baseline by heart-specific fatty acid-binding protein ELISA and at follow-up using planimetry. Components of Wnt/Frizzled signaling, myofibroblast presence, and extracellular matrix were measured at follow-up with qPCR and/or histology. Results show that UM206 treatment resulted in a significant decrease in infarct mass compared with baseline (-41±10%), whereas infarct mass remained stable in the Control-MI group (+3±17%). Progressive dilation of the left ventricle occurred in the Control-MI group between 3 and 5 weeks after MI, while adverse remodeling was halted in the UM206-treated group. mRNA expression for Frizzled-4 and the Frizzled co-receptor LRP5 was increased in UM206-treated swine as compared with Control-MI swine. Myofibroblast presence was significantly lower in infarcted tissue of the UM206-treated animals (1.53±0.43% vs 3.38±0.61%) at 5 weeks follow-up. This study demonstrates that UM206 treatment attenuates adverse remodeling in a swine model of reperfused MI, indicating that Wnt/Frizzled signaling is a promising target to improve infarct healing and limit post-MI remodeling.

  18. Feasibility study of CaSO4:Tb,Yb as a thermoluminescent dosimeter

    NASA Astrophysics Data System (ADS)

    Junot, Danilo O.; Santos, Max A.; Chagas, Marcos A. P.; Couto dos Santos, Marcos A.; Nunes, Luiz A. O.; Souza, Divanizia N.

    2014-02-01

    A new composite based on CaSO4, using terbium as dopant and ytterbium as co-dopant (CaSO4:Tb,Yb), was developed for employment as a thermoluminescent (TL) dosimeter. The crystals used in this work were grown using a production route based on the Yamashita method (Yamashita et al., 1968). Crystal powder was calcined at 600 °C for 1 h. Pellets were made by adding commercial and colorless glass to improve physical resistance and sintered at 700 °C for 6 h. All samples were irradiated by a beta source (90Sr/90Y) and received doses from 1 Gy to 5 Gy. TL analyses have been performed and characteristics such as sensitivity, reproducibility, linearity, and fading have been studied. The CaSO4:Tb,Yb pellets glow curves presented two peaks, the first at around 115 °C, and the second at around 200 °C. The highest intensity was shown for CaSO4:Tb,Yb with a concentration of 0.1 mol% of Tb and Yb together. In all the samples the TL response was proportional to the absorbed dose. Therefore, the CaSO4:Tb,Yb has potential to be used as a thermoluminescent dosimeter.

  19. Reduction Kinetics of a CasO4 Based Oxygen Carrier for Chemical-Looping Combustion

    NASA Astrophysics Data System (ADS)

    Xiao, R.; Song, Q. L.; Zheng, W. G.; Deng, Z. Y.; Shen, L. H.; Zhang, M. Y.

    The CaSO4 based oxygen carrier has been proposed as an alternative low cost oxygen carrier for Chemical-looping combustion (CLC) of coal. The reduction of CaSO4 to CaS is an important step for the cyclic process of reduction/oxidation in CLC of coal with CaSO4 based oxygen carrier. Thermodynamic analysis of CaSO4 oxygen carrier with CO based on the principle of Gibbs free energy minimization show that the essentially high purity of CO2 can be obtained, while the solid product is CaS instead of CaO. The intrinsic reduction kinetics of a CaSO4 based oxygen carrier with CO was investigated in a differential fixed bed reactor. The effects of gas partial pressure (20%-70%) and temperature (880-950°C) on the reduction were investigated. The reduction was described with shrinking unreacted core model. Experimental results of CO partial pressure on the solid conversion show that the reduction of fresh oxygen carriers is of first order with respect to the CO partial pressure. Both chemical reaction control and product layer diffusion control determine the reduction rate. The dependences of reaction rate constant and effective diffusivity with temperature were both obtained. The kinetic equation well predicted the experimental data.

  20. 31.5um imaging observations of AGN using SOFIA/FORCAST

    NASA Astrophysics Data System (ADS)

    Fuller, Lindsay; Lopez-Rodriguez, Enrique; Packham, Christopher C.; Los Piratas Team

    2016-01-01

    The unified model of active galactic nuclei (AGN) requires a toroidal region of optically and geometrically thick dust obscuring a central engine, accounting for various observed spectral features. Our aim is to investigate the overall torus properties to obtain analytical results for its physical parameters. We present 31.5um photometric observations of 12 nearby Seyfert galaxies from the 2.5m SOFIA telescope using the FORCAST camera. We used Clumpy torus models and a Bayesian approach to fit the IR (1.2-31.5um) nuclear SEDs and high angular resolution mid-IR (8-13um) spectroscopy. We found that the turnover of the torus emission does not occur at wavelengths <31.5um, which we interpret as a lower-limit for the peak torus emission. Including the 31.5um nuclear flux 1) reduces the dispersion of Clumpy torus models at wavelengths >30um, which better constrains the model parameters, 2) generally decreases the radial extent of the torus. We find torus radii ranging from ~1 - 8.5pc, with an average radius of 2.6pc, which is consistent with interferometric and high-spatial resolution observations.

  1. Spectroscopy of JVI Himalia for detection and characterization of the 3 um water band

    NASA Astrophysics Data System (ADS)

    Schindler, Karsten

    2013-10-01

    We aim at securely detecting and characterizing the presence of the 3um band for the first time in the reflectance spectrum of a Jovian irregular satellite. Features in the 3um band can unambiguously reveal water ice or past aqueous alteration of the surface material that lead to bound water molecules and hydroxyl groups in minerals. Water ice and hydrated minerals are ubiquitous in the Jovian system and have been found on Europa, Ganymede, Callisto and the inner regular satellite JV Amalthea. In contrast to these neighboring satellites and to two irregular satellites that have been studied at Saturn and Neptune, a detection of water (previously or currently present) on a Jovian irregular satellite has not yet been succeeded due to constraints of ground-based observatories. No dedicated spacecraft mission to the Jovian system has allowed to study them close-up. Their very low albedos and small diameters only allow ground-based spectroscopy up to 2.5um for very few objects. The strong telluric absorption band of the atmosphere between 2.55-2.85um and the increasing IR-background beyond 2.85um makes ground-based spectroscopy for these very faint objects impossible. SOFIA has the unique capability to overcome these limits. Flitecam provides enough sensitivity to conduct spectroscopic investigations between 2.6-3.5um of the largest object of the Jovian irregular satellite population, JVI Himalia. Supplementary high quality spectral data from 0.65-2.55um has already been acquired by Schindler and Reddy using SpeX on NASA IRTF. Three indicators strongly suggest the presence of the 3um band: A shallow absorption feature around 1.1um attributed to magnetite, a weak feature around 0.7 um attributed to phyllosillicates and an average heliocentric distance of 5.2AU where water ice is thought to be stable throughout the history of the Solar System. The results of this study will greatly contribute to understand the origin and history of these objects.

  2. Impulsive excitation of mechanoluminescence in gamma-irradiated CaSO4:Eu phosphors

    NASA Astrophysics Data System (ADS)

    Kher, R. S.; Dhoble, S. J.; Pandey, R. K.; Upadhyay, A. K.; Khokhar, M. S. K.

    2011-01-01

    The mechanoluminescence (ML) and thermoluminescence (TL) of γ-irradiated CaSO4:Eu phosphor have been studied. CaSO4 samples having different concentrations of Eu were prepared by dissolving CaSO4.2H2O in sulphuric acid and evaporating the excess acid around 300 °C. ML was excited impulsively by dropping a load onto the sample. Three distinct peaks have been observed in the ML intensity versus time curve. The ML intensity increases with the increasing concentration of the dopant. The effect of temperature on the shape and peak of ML intensity was also recorded. Growth, saturation and broadening in an ML peak were observed. TL glow curves of CaSO4:Eu phosphors at different concentrations contain two TL peaks: the first peak was observed at around 110 °C and the other at 210 °C. Experimental results suggest that the ML excitation is related to the movement of dislocation with defect centres, the increase in ML with temperature is due to the enhancement in dislocation capture probability, and the reduction is due to the thermal bleaching of defect centres.

  3. Preparation of CaSO4:Dy by precipitation method to gamma radiation dosimetry.

    PubMed

    Rivera, T; Roman, J; Azorín, J; Sosa, R; Guzmán, J; Serrano, A K; García, M; Alarcón, G

    2010-01-01

    This paper presents the results of the preparation and characterization of dysprosium-doped calcium sulfate (CaSO(4):Dy) phosphor, which was obtained by homogeneous precipitation from calcium acetate Ca(CH(3)COO(-))(2). Structural and morphological characteristics were studied using a scanning electronic microscope (SEM). The structure of all compounds was determined by X-ray diffraction method too. Thermoluminescence (TL) emission properties of CaSO(4):Dy under gamma radiation effects were studied. This phosphor powder presented a TL glow curve with two peaks (Tmax) centered at around of 180 and 300 degrees C, respectively. The TL response of CaSO(4):Dy as a function of gamma absorbed dose was linear in a wide range. Both emission and excitation spectra were also obtained. Results showed that this new preparation method of CaSO(4):Dy TL phosphor is less expensive, cleaner and safer than the conventional preparation method. Copyright 2009 Elsevier Ltd. All rights reserved.

  4. UM-PRS: An implementation of the procedural reasoning system for multirobot applications

    NASA Technical Reports Server (NTRS)

    Lee, Jaeho; Huber, Marcus J.; Durfee, Edmund H.; Kenny, Patrick G.

    1994-01-01

    The Procedural Reasoning System (PRS) is used in applications where predetermined situations might arise. The UM-PRS provides a reasoning system that represents robotic applications even in unpredictable domains, such as the robotic reconnaissance task domain outlined here. UM-PRS incorporates a changing context, rather than relying solely on a prearranged plan. The UM-PRS here provides representation important in the reasoning and interface between a mission plan and the executable map of an outdoor vehicle that changes its behavior based on what it comes in contact with in its environment. PRS is thus used in the dynamic control of such a vehicle, providing the basis for coordinating the joint task of multiple robotic vehicles by the their individual observations and representation.

  5. Protective Effects of Ultramicronized Palmitoylethanolamide (PEA-um) in Myocardial Ischaemia and Reperfusion Injury in VIVO.

    PubMed

    Di Paola, Rosanna; Cordaro, Marika; Crupi, Rosalia; Siracusa, Rosalba; Campolo, Michela; Bruschetta, Giuseppe; Fusco, Roberta; Pugliatti, Pietro; Esposito, Emanuela; Cuzzocrea, Salvatore

    2016-08-01

    Myocardial infarction is the leading cause of death, occurs after prolonged ischemia of the coronary arteries. Restore blood flow is the first intervention help against heart attack. However, reperfusion of the arteries leads to ischemia/reperfusion injury (I/R). The fatty acid amide palmitoylethanolamide (PEA) is an endogenous compound widely present in living organisms, with analgesic and anti-inflammatory properties. The present study evaluated the effect of ultramicronized palmitoylethanolamide (PEA-um) treatment on the inflammatory process associated with myocardial I/R. Myocardial ischemia reperfusion injury was induced by occlusion of the left anterior descending coronary artery for 30 min followed by 2 h of reperfusion. PEA-um, was administered (10 mg/kg) 15 min after ischemia and 1 h after reperfusion. In this study, we demonstrated that PEA-um treatment reduces myocardial tissue injury, neutrophil infiltration, adhesion molecules (ICAM-1, P-selectin) expression, proinflammatory cytokines (TNF-α, IL-1β) production, nitrotyrosine and PAR formation, nuclear factor kB expression, and apoptosis (Fas-L, Bcl-2) activation. In addition to study whether the protective effect of PEA-um on myocardial ischemia reperfusion injury is also related to the activation of PPAR-α, in a separate set of experiments it has been performed myocardial I/R in PPARα mice. Genetic ablation of peroxisome proliferator activated receptor (PPAR)-α in PPAR-αKO mice exacerbated Myocardial ischemia reperfusion injury when compared with PPAR-αWT mice. PEA-um induced cardioprotection in PPAR-α wild-type mice, but the same effect cannot be observed in PPAR-αKO mice. Our results have clearly shown a modulation of the inflammatory process, associated with myocardial ischemia reperfusion injury, following administration of PEA-um.

  6. Vínculos sobre um modelo de quartessência de Chaplygin usando observações do satélite chandra da fração de massa de gás em aglomerados de galáxias

    NASA Astrophysics Data System (ADS)

    de Souza, R. S.

    2003-08-01

    Observações de Supernovas do tipo Ia mostram que a expansão do Universo está acelerando. Segundo as equações de Einstein uma componente com pressão negativa (energia escura) é necessária para explicar a aceleração cósmica. Além da energia escura é usualmente admitido que no Universo há também uma matéria exótica com pressão zero, que é chamada de matéria escura. Essa componente possui um papel fundamental na formação de estruturas no Universo. Recentemente tem se explorado a possibilidade de que matéria e energia escura poderiam ser unificadas através de uma única componente, que tem sido denominada de quartessência. Um exemplo de fluido com essas características é o Gás de Chaplygin Generalizado, que possui uma equação de estado da forma p = -A/ra. Inicialmente consideramos o caso especial a = 1 (gás de Chaplygin) e vinculamos parâmetros do modelo utilizando observações em raios-X do satélite Chandra da fração de massa de gás em aglomerados de galáxias. Uma comparação dos vínculos obtidos com esse teste com outros testes, tais como supernovas e idade do Universo, mostra que esse teste é bastante restritivo. Exibiremos ainda resultados para o caso em que a curvatura é nula e o parâmetro a está compreendido no intervalo -1 < a 1.

  7. Draft Genome Sequence of Ochroconis constricta UM 578, Isolated from Human Skin Scraping.

    PubMed

    Chan, Chai Ling; Yew, Su Mei; Na, Shiang Ling; Tan, Yung-Chie; Lee, Kok Wei; Yee, Wai-Yan; Ngeow, Yun Fong; Ng, Kee Peng

    2014-04-17

    Ochroconis constricta is a soilborne dematiaceous fungus that has never been reported to be associated with human infection. Here we report the first draft genome sequence of strain UM 578, isolated from human skin scraping. The genomic information revealed will contribute to a better understanding of this species.

  8. Use of "um" in the Deceptive Speech of a Convicted Murderer

    ERIC Educational Resources Information Center

    Villar, Gina; Arciuli, Joanne; Mallard, David

    2012-01-01

    Previous studies have demonstrated a link between language behaviors and deception; however, questions remain about the role of specific linguistic cues, especially in real-life high-stakes lies. This study investigated use of the so-called filler, "um," in externally verifiable truthful versus deceptive speech of a convicted murderer. The data…

  9. Use of "um" in the Deceptive Speech of a Convicted Murderer

    ERIC Educational Resources Information Center

    Villar, Gina; Arciuli, Joanne; Mallard, David

    2012-01-01

    Previous studies have demonstrated a link between language behaviors and deception; however, questions remain about the role of specific linguistic cues, especially in real-life high-stakes lies. This study investigated use of the so-called filler, "um," in externally verifiable truthful versus deceptive speech of a convicted murderer. The data…

  10. Evolution and Persistence of 5-um Hot Spots at the Galileo Probe entry Latitude

    NASA Technical Reports Server (NTRS)

    Fisher, B. M.

    1997-01-01

    We present a study on the longtudinal locations, morphology and evolution of the 5-um hot spots at 6.5 deg. N latitude (planetocentric), from an extensive IRTF-NSFCAM data set spanning more that 3 years, which includes the date of the Galileo Probe entry.

  11. Unit 5, STA. 50+00+RB, retaining wall at First U.M. Churchdetail ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Unit 5, STA. 50+00+RB, retaining wall at First U.M. Church-detail - Johnstown Local Flood Protection Project, Beginning on Conemaugh River approx 3.8 miles downstream from confluence of Little Conemaugh & Stony Creek Rivers at Johnstown, Johnstown, Cambria County, PA

  12. Evolution and Persistence of 5-um Hot Spots at the Galileo Probe entry Latitude

    NASA Technical Reports Server (NTRS)

    Fisher, B. M.

    1997-01-01

    We present a study on the longtudinal locations, morphology and evolution of the 5-um hot spots at 6.5 deg. N latitude (planetocentric), from an extensive IRTF-NSFCAM data set spanning more that 3 years, which includes the date of the Galileo Probe entry.

  13. Genome Sequence of a Typical Ultramicrobacterium, Curvibacter sp. Strain PAE-UM, Capable of Phthalate Ester Degradation.

    PubMed

    Ma, Dan; Hao, Zhenyu; Sun, Rui; Bartlam, Mark; Wang, Yingying

    2016-01-14

    Curvibacter sp. strain PAE-UM, isolated from river sediment, is a typical ultramicrobacterium capable of phthalate ester degradation. The genome of Curvibacter sp. PAE-UM consists of 3,284,473 bp, and its information will provide insights into the molecular mechanisms underlying its degradation ability.

  14. Variabilidade óptica de longo período e precessão de jato: o caso de BL Lacertae

    NASA Astrophysics Data System (ADS)

    Caproni, A.; Abraham, Z.

    2003-08-01

    Variabilidade é tipicamente uma característica de AGNs, sendo observada em toda a faixa eletromagnética. Em relação às escalas de tempo, variações desde horas até de algumas décadas foram encontradas por vários autores. Em alguns casos, análises temporais de curvas de luz mostram a existência de periodicidade nas variações observadas. Um exemplo de objeto que preenche as características mencionadas acima é BL Lacertae, o protótipo da classe BL Lac dos AGNs. Neste trabalho, nós interpretamos a variabilidade periódica de longo período detectada na curva de luz na banda B (~7,5 anos) como o resultado da periodicidade na amplificação da radiação oriunda do jato relativístico. Neste cenário, a amplificação periódica seria induzida pela precessão, que muda o ângulo entre o jato e a linha de visada. Com esta abordagem e vínculos adicionais fornecidos por observações em altas energias, nós podemos impor limites para os parâmetros do modelo de precessão, tais como o fator de Lorentz associado ao movimento global do jato, o ângulo de abertura do cone de precessão e o ângulo entre o eixo do cone e a linha de visada.

  15. Ultramicronized palmitoylethanolamide (PEA-um(®)) in the treatment of idiopathic pulmonary fibrosis.

    PubMed

    Di Paola, Rosanna; Impellizzeri, Daniela; Fusco, Roberta; Cordaro, Marika; Siracusa, Rosalba; Crupi, Rosalia; Esposito, Emanuela; Cuzzocrea, Salvatore

    2016-09-01

    Pulmonary fibrosis is a chronic condition characterized by progressive scarring of lung parenchyma. The aim of this study was to examine the effects of an ultramicronized preparation of palmitoylethanolamide (PEA-um(®)), an endogenous fatty acid amide, in mice subjected to idiopathic pulmonary fibrosis. Idiopathic pulmonary fibrosis was induced in male mice by a single intratracheal administration of saline with bleomycin sulphate (1mg/kg body weight) in a volume of 100μL. PEA-um(®) was injected intraperitoneally at 1, 3 or 10mg/kg 1h after bleomycin instillation and daily thereafter. Animals were sacrificed after 7 and 21days by pentobarbitone overdose. One cohort of mice was sacrificed after seven days of bleomycin administration, followed by bronchoalveloar lavage and determination of myeloperoxidase activity, lung edema and histopathology features. In the 21-day cohort, mortality was assessed daily, and surviving mice were sacrificed followed by the above analyses together with immunohistochemical localization of CD8, tumor necrosis factor-α, CD4, interleukin-1β, transforming growth factor-β, inducible nitric oxide synthase and basic fibroblast growth factor. Compared to bleomycin-treated mice, animals that received also PEA-um(®) (3 or 10mg/kg) had significantly decreased weight loss, mortality, inflammation, lung damage at the histological level, and lung fibrosis at 7 and 21days. PEA-um(®) (1mg/kg) did not significantly inhibit the inflammation response and lung fibrosis. This study demonstrates that PEA-um(®) (3 and 10mg/kg) reduces the extent of lung inflammation in a mouse model of idiopathic pulmonary fibrosis.

  16. Uh, Um, and Autism: Filler Disfluencies as Pragmatic Markers in Adolescents with Optimal Outcomes from Autism Spectrum Disorder.

    PubMed

    Irvine, Christina A; Eigsti, Inge-Marie; Fein, Deborah A

    2016-03-01

    Filler disfluencies--uh and um--are thought to serve distinct discourse functions. We examined fillers in spontaneous speech by youth with autism spectrum disorder (ASD), who struggle with pragmatic language, and by youth with ASD who have achieved an 'optimal outcome' (OO), as well as in peers with typical development (TD). While uh rates did not differ, participants with ASD produced um less frequently than OO or TD groups. Um rate was associated with autism symptom severity, but not executive function or language abilities, suggesting that um serves a pragmatic, listener-oriented function. Moreover, in contrast to minimal production in ASD, the typical OO um production substantiates the normalization of subtle social communication in this population.

  17. Modeling the thermoluminescent response of CaSO4:Dy by the MCNPX method.

    PubMed

    Furetta, C; Roman, J; Rivera, T; Azorín, J; Azorín, C G; Vega-Carrillo, H R

    2010-01-01

    This work describes an algorithm for absorbed dose evaluation in the region of X-ray diagnostic energy based on the response of CaSO(4):Dy thermoluminescence powder detectors. The absorbed dose was calculated using Monte Carlo simulation code (MCSC) and then compared to the experimental TLD results for X-rays effective energies (60)Co gamma radiation. In order to study the photon interaction in the matter, a cylindrical model of 1 cm(3) was used. The gamma radiation source was placed at 100 cm to the object; the source is considered as an isotropic source of (60)Co. The energy deposited into the cylindrical model was determined by the Monte Carlo N-particle (MCNPX) method. Measurements of the TL phosphors were obtained by irradiating the powder by gamma radiation. TL glow curve of CaSO(4):Dy after gamma irradiated at a 1 Gy of absorbed dose was then obtained. Copyright 2009 Elsevier Ltd. All rights reserved.

  18. Experimental Comparison of Calcium Sulfate (CaSO(4)) Scale Deposition on Coated Carbon Steel and Titanium Surfaces

    NASA Astrophysics Data System (ADS)

    Al-Otaibi, Dhawi AbdulRahman

    Calcium Sulfate (CaSO4) deposit reduces heat exchange in heat transfer equipment which adversely affects the equipment performance and plant production. This experimental study was conducted by using the Rotating Cylinder Electrode (RCE) equipment available in the university's Center for Engineering Research (CER/RI) to study and compare the effect of solution hydrodynamics on Calcium Sulfate (CaSO4) scale deposition on coated carbon steel and titanium surfaces. In addition, the Scanning Electron Microscopic was used to examine the morphology and distribution of Calcium Sulfate (CaSO 4) crystals deposited on titanium metal surfaces. In this study, the rotational speed was varied from 100 to 2000 RPM to study the behavior of Calcium Sulfate (CaSO4) accumulation on both materials. Based on the experimental results, Calcium Sulfate (CaSO4) scale obtained in the present study was almost constant on coated carbon steel in which the rate of scale deposition is equal to the rate of scale removal. However, the deposition of Calcium Sulfate (CaSO4) observed on titanium material was increased as the speed increased.

  19. The merging dwarf galaxy UM 448: chemodynamics of the ionized gas from VLT integral field spectroscopy

    NASA Astrophysics Data System (ADS)

    James, B. L.; Tsamis, Y. G.; Barlow, M. J.; Walsh, J. R.; Westmoquette, M. S.

    2013-01-01

    Using Very Large Telescope/Fibre Large Array Multi Element Spectrograph optical integral field unit observations, we present a detailed study of UM 448, a nearby blue compact galaxy (BCG) previously reported to have an anomalously high N/O abundance ratio. New Technology Telescope/Superb-Seeing Imager images reveal a morphology suggestive of a merger of two systems of contrasting colour, whilst our Hα emission maps resolve UM 448 into three separate regions that do not coincide with the stellar continuum peaks. UM 448 exhibits complex emission line profiles, with most lines consisting of a narrow [full width at half-maximum (FWHM) ≲ 100 km s-1], central component, an underlying broad component (FWHM ˜ 150-300 km s-1) and a third, narrow blueshifted component. Radial velocity maps of all three components show signs of solid body rotation across UM 448, with a projected rotation axis that correlates with the continuum morphology of the galaxy. A spatially resolved, chemodynamical analysis, based on the [O iii] λλ4363, 4959, [N ii] λ6584, [S ii] λλ6716, 6731 and [Ne iii] λ3868 line maps, is presented. Whilst the eastern tail of UM 448 has electron temperatures (Te) that are typical of BCGs, we find a region within the main body of the galaxy where the narrow and broad [O iii] λ4363 line components trace temperatures differing by 5000 K and oxygen abundances differing by 0.4 dex. We measure spatially resolved and integrated ionic and elemental abundances for O, N, S and Ne throughout UM 448, and find that they do not agree, possibly due the flux weighting of Te from the integrated spectrum. This has significant implications for abundances derived from long-slit and integrated spectra of star-forming galaxies in the nearby and distant universe. A region of enhanced N/O ratio is indeed found, extended over a ˜0.6 kpc2 region within the main body of the galaxy. Contrary to previous studies, however, we do not find evidence for a large Wolf-Rayet (WR

  20. CaSO4:DY,Mn: A new and highly sensitive thermoluminescence phosphor for versatile dosimetry

    NASA Astrophysics Data System (ADS)

    Bahl, Shaila; Lochab, S. P.; Kumar, Pratik

    2016-02-01

    With the advent of newer techniques for dose reduction coupled with the development of more sensitive detectors, the radiation doses in radiological medical investigation are decreasing. Nevertheless, keeping the tenet in mind that all radiation doses could entail risk, there is a need to develop more sensitive dosimeters capable of measuring low doses. This paper gives the account of the development of a new and sensitive phosphor CaSO4:Dy,Mn and its characterization. The standard production procedure based on the recrystallization method was used to prepare CaSO4:Dy,Mn. The Thermoluminescence (TL) studies were carried out by exposing it with gamma radiation (Cs-137) from 10 μGy to 100 Gy. The theoretical studies to determine the number of peaks and kinetic parameters related to the TL glow peaks in CaSO4:Dy,Mn was performed using the Computerized Glow Curve Deconvolution (CGCD) method. Experiments were performed to determine optimum concentration of the dopants Dysprosium (Dy) and Mangnese (Mn) in the host CaSO4 so that maximum sensitivity of the phosphor may be achieved. The optimum dopant concentration turned out to be 0.1 mol%. As there were two dopants Dy and Mn their relative ratio were varied in steps of 0.025 keeping the concentration of total dopant (Dy and Mn) 0.1 mol% always. The maximum TL intensity was seen in the CaSO4:Dy(0.025),Mn(0.075) combination. The TL sensitivity of this phosphor was found to be about 2 and 1.8 times higher than that of popular phosphor CaSO4:Dy and LiF:Mg,Cu,P (TLD-700H) respectively. This new phosphor CaSO4:Dy,Mn showed fading of 11% which is similar to that of the standard phosphor CaSO4:Dy. The paper concludes that the new, highly sensitive TL phosphor CaSO4:Dy,Mn has shown higher sensitivity and hence the potential to replace commonly used CaSO4:Dy.

  1. Electron spin resonance and thermoluminescence studies in CaSO4: Dy,Ag phosphor

    NASA Astrophysics Data System (ADS)

    Dhabekar, Bhushan; Menon, Sanjeev; Kumar, Rajesh; Gundu Rao, T. K.; Bhatt, B. C.; Lakshmanan, A. R.

    2005-09-01

    The defect centres formed in the thermoluminescence (TL) phosphor CaSO4 : Dy,Ag are studied using the technique of electron spin resonance (ESR). The Ag co-doped phosphor exhibits three glow peaks around 130°C, 220°C and 375°C, in contrast to the two glow peaks observed in the CaSO4 : Dy phosphor at 130°C and 220°C, at gamma ray dose of 1 Gy when the TL measurements were carried out in the spectral region 300-650 nm. ESR studies show that the additional peak at 375°C correlates with a Ag2+ centre formed owing to γ-irradiation and observable below -170°C. The Ag2+ centre is characterized by an axial g-tensor with principal values g|| = 2.38 and gbottom = 2.41. ESR studies further indicate that the precursor to a centre observable at low temperature (-170°C) appears to act as the recombination centre for the TL peak at 375°C; this radical is characterized by the g-values g|| = 2.0023 and gbottom = 2.0038 and is assigned to the SO_{3}^{-} radical. It is observed that there is more incorporation of Ag in the CaSO4 : Dy system as compared with that in the pure CaSO4 system. The variation of Ag2 + ESR intensity with Ag concentration as well as with dose in the range 0.3-120 kGy is studied. The Ag2 + ESR signal and TL saturate at 2 × 104 Gy, but the intensity of the SO_{3}^{-} radical continues to increase up to the studied dose of 1.2 × 105 Gy. The intensity of the SO_{3}^{-} radical decreases with Ag concentration in CaSO4 : Dy,Ag, in agreement with the TL model proposed in this work.

  2. VizieR Online Data Catalog: Subaru H images of UM673 (Koptelova+, 2014)

    NASA Astrophysics Data System (ADS)

    Koptelova, E.; Chiueh, T.; Chen, W. P.; Chan, H.-H.

    2014-05-01

    We carried out H-band observations of UM673 with the Subaru Infra-Red Camera and Spectrograph (IRCS) using an adaptive optics system with 188 control elements (AO188). The images were reduced following the procedure described in "Subaru Data Reduction CookBook: Imaging Observation with IRCS" by Y. Minowa (see also Minowa et al. 2005ApJ...629...29M). The final Subaru H-band stack image of UM673 was created by coadding 22 reduced single exposure images. We also created the exposure time map of the stack image. The 17x10arcsec subframe of the stack image and the corresponding exposure map displayed in Figures 1 and 2 of the paper are available as fits files. (2 data files).

  3. Variability of the broad absorption lines in the QSO UM 232

    NASA Technical Reports Server (NTRS)

    Barlow, Thomas A.; Junkkarinen, Vesa T.; Burbidge, E. Margaret

    1989-01-01

    Low-resolution spectra of UM 232 taken in 1978, 1979, and 1988 at Lick Observatory are presented. Large changes in the Si IV lambda 1397, CIV lambda 1549, and Al III lambda 1857 broad absorption lines are apparent. The decrease in column density in all three ions and an observed brightening of the QSO suggests that these changes are due to an increase in the ionization level driven by an increase in the central source luminosity. This mechanism has been proposed by Smith and Penston to explain small changes in the absorption spectrum of the QSO 1246-057. The spectra of UM 232 show that the fractional decrease in optical depth is smaller at higher outflow velocies. The structure of the broad absorption-line region (BALR) is investigted by estimating an ionization parameter for each ion species as a function of velocity.

  4. VizieR Online Data Catalog: Activity of 70um-selected galaxies (Symeonidis+, 2010)

    NASA Astrophysics Data System (ADS)

    Symeonidis, M.; Rosario, D.; Georgakakis, A.; Harker, J.; Laird, E. S.; Page, M. J.; Willmer, C. N. A.

    2012-01-01

    We present the first active galactic nuclei (AGN) census in a sample of 61 galaxies selected at 70um, a wavelength which should strongly favour the detection of star-forming systems. For the purpose of this study, we take advantage of deep Chandra X-ray and Spitzer infrared (3.6-160um) data, as well as optical spectroscopy and photometry from the Deep Extragalactic Evolutionary Probe 2 (DEEP 2) survey for the Extended Groth Strip (EGS) field, as part of the All-Wavelength Extended Groth Strip International Survey. We investigate spectral line diagnostics ([OIII]/H β and [NeIII]/[OII] ratios, Hδ Balmer absorption line equivalent widths and the strength of the 4000Å break), X-ray luminosities and spectral energy distributions (SEDs). (1 data file).

  5. Observations of the new gravitational lens system UM 673 = Q 0142-100

    NASA Astrophysics Data System (ADS)

    Surdej, J.; Magain, P.; Swings, J.-P.; Borgeest, U.; Courvoisier, T. J.-L.; Kayer, R.; Kellermann, K. I.; Kuhr, H.; Refsdal, S.

    1988-06-01

    The authors have recently initiated a high resolution direct imaging survey of a selected sample of highly luminous quasars (HLQs). The observations are carried out with the 2.2 m telescope at ESO, and with the VLA at the NRAO, New Mexico. Following the first observing run at ESO, the authors have reported the discovery of a new gravitational lens system for the HLQ UM 673 = Q 0142-100. Additional observations supporting this interpretation are discussed here. Application of gravitational optometry to this system is given: a value of M0 = 2.4×1011M_sun; is derived for the mass of the lensing galaxy located between UM 673 A and B and a most likely estimate of Δt = 7 weeks is found for the expected delay between the arrival times of a similar variability event in the two lensed images of the quasar (H0 = 75 km s-1Mpc-1, q0 = 0).

  6. Fermentation optimization for the production of bioactive polysaccharides from Cordyceps sinensis fungus UM01.

    PubMed

    Wang, Lan-Ying; Cheong, Kit-Leong; Wu, Ding-Tao; Meng, Lan-Zhen; Zhao, Jing; Li, Shao-Ping

    2015-08-01

    The optimal fermentation conditions and medium for the production of bioactive polysaccharides from the mycelium of Cordyceps sinensis fungus UM01 were investigated by using orthogonal design and high performance size exclusion chromatography coupled with multi-angel laser light scattering and refractive index detector (HPSEC-MALLS-RID). Results showed that the optimal temperature, initial pH, rotation speed, medium capacity (ratio of medium volume to the volume of flask bottle) and inoculums volume for the mycelium growth were 15 °C, pH 6.0, 150 rpm, 2/5 (v/v), and 3% (v/v), respectively. Furthermore, bioactive polysaccharides from the mycelium of C. sinensis fungus UM01 were determined as polysaccharide fractions with the molecular weight above 10 kDa. The optimal fermentation medium was determined as a composition of glucose 30.0 g/L, sucrose 30.0 g/L, KH2PO4 1.0 g/L, CaCl2 0.5 g/L, yeast extract 3.0 g/L, and MgCl2 0.1g/L according to the maximum amount of the bioactive polysaccharides (486.16±19.60 mg/L) measured by HPSEC-MALLS/RID. Results are helpful to establish an efficient and controllable fermentation process for the industrial production of bioactive polysaccharides from C. sinensis UM01, and beneficial to develop a unique health and functional product in future.

  7. Isoalantolactone inhibits UM-SCC-10A cell growth via cell cycle arrest and apoptosis induction.

    PubMed

    Wu, Minjun; Zhang, Hua; Hu, Jiehua; Weng, Zhiyong; Li, Chenyuan; Li, Hong; Zhao, Yan; Mei, Xifan; Ren, Fu; Li, Lihua

    2013-01-01

    Isoalantolactone is a sesquiterpene lactone compound isolated from the roots of Inula helenium L. Previous studies have demonstrated that isoalantolactone possesses antifungal, anti-bacterial, anti-helminthic and anti-proliferative properties in a variety of cells, but there are no studies concerning its effects on head and neck squamous cell carcinoma (HNSCC). In the present study, an MTT assay demonstrated that isoalantolactone has anti-proliferative activity against the HNSCC cell line (UM-SCC-10A). Immunostaining identified that this compound induced UM-SCC-10A cell apoptosis but not necrosis. To explain the molecular mechanisms underlying its effects, flow cytometry and western blot analysis showed that the apoptosis was associated with cell cycle arrest during the G1 phase, up-regulation of p53 and p21, and down-regulation of cyclin D. Furthermore, our results revealed that induction of apoptosis through a mitochondrial pathway led to up-regulation of pro-apoptotic protein expression (Bax), down-regulation of anti-apoptotic protein expression (Bcl-2), mitochondrial release of cytochrome c (Cyto c), reduction of mitochondrial membrane potential (MMP) and activation of caspase-3 (Casp-3). Involvement of the caspase apoptosis pathway was confirmed using caspase inhibitor Z-VAD-FMK pretreatment. Together, our findings suggest that isoalantolactone induced caspase-dependent apoptosis via a mitochondrial pathway and was associated with cell cycle arrest in the G1 phase in UM-SCC-10A cells. Therefore, isoalantolactone may become a potential drug for treating HNSCC.

  8. Correlated magnetic resonance imaging and ultramicroscopy (MR-UM) is a tool kit to assess the dynamics of glioma angiogenesis.

    PubMed

    Breckwoldt, Michael O; Bode, Julia; Kurz, Felix T; Hoffmann, Angelika; Ochs, Katharina; Ott, Martina; Deumelandt, Katrin; Krüwel, Thomas; Schwarz, Daniel; Fischer, Manuel; Helluy, Xavier; Milford, David; Kirschbaum, Klara; Solecki, Gergely; Chiblak, Sara; Abdollahi, Amir; Winkler, Frank; Wick, Wolfgang; Platten, Michael; Heiland, Sabine; Bendszus, Martin; Tews, Björn

    2016-02-02

    Neoangiogenesis is a pivotal therapeutic target in glioblastoma. Tumor monitoring requires imaging methods to assess treatment effects and disease progression. Until now mapping of the tumor vasculature has been difficult. We have developed a combined magnetic resonance and optical toolkit to study neoangiogenesis in glioma models. We use in vivo magnetic resonance imaging (MRI) and correlative ultramicroscopy (UM) of ex vivo cleared whole brains to track neovascularization. T2* imaging allows the identification of single vessels in glioma development and the quantification of neovessels over time. Pharmacological VEGF inhibition leads to partial vascular normalization with decreased vessel caliber, density, and permeability. To further resolve the tumor microvasculature, we performed correlated UM of fluorescently labeled microvessels in cleared brains. UM resolved typical features of neoangiogenesis and tumor cell invasion with a spatial resolution of ~5 µm. MR-UM can be used as a platform for three-dimensional mapping and high-resolution quantification of tumor angiogenesis.

  9. Extended X-ray absorption fine structure (EXAFS) study of CaSO 4:Dy phosphors

    NASA Astrophysics Data System (ADS)

    Bhattacharyya, D.; Bakshi, A. K.; Ciatto, G.; Aquilanti, G.; Pradhan, A. S.; Pascarelli, S.

    2006-03-01

    Extended X-ray absorption fine structure (EXAFS) measurements have been carried out on CaSO 4:Dy phosphors at the Dy L 3 edge with synchrotron radiation. The data have been analysed to find out the Dy-S and Dy-O bond lengths in the neighborhood of the Dy atoms. Measurements have been carried out over several samples thermally annealed for different cycles at 400 °C in air for 1 h and the change in bond lengths in samples with increasing number of annealing cycles have been studied by analyzing the EXAFS data.

  10. Room and low temperature luminescence properties of CaSO4: Dy , Tm codoped with Li

    NASA Astrophysics Data System (ADS)

    Can, N.; Karalı, T.; Wang, Y.; Townsend, P. D.; Prokic, M.; Canimoglu, A.

    2009-08-01

    Rare earths, especially Dy or Tm doped CaSO4 phosphors are actively studied. They have high sensitivity, a large dynamic range, thermal stability and ease of preparation. Nevertheless, they can be enhanced by inclusion of lithium and this study reports some effects of lithium co-dopant on the TL and radioluminescence (RL) emissions of two TL phosphors. Addition of Li as a co-dopant ion was made either during chemical preparation of the phosphors, or as a binder component mixed with the basic phosphors matrix during the process of pressing and sintering the TLD pellets.

  11. Study of Residual TL of CaSO4:Dy-based Thermoluminescence Dosemeter.

    PubMed

    Sahai, Manish K; Pradhan, S M; Bakshi, A K; Datta, D

    2017-04-27

    Thermoluminescence (TL) signal obtained during second readout of a TL dosemeter disc previously exposed to ionising radiation is termed as residual TL. The origin of residual TL has not been discussed in detail so far in the literature. In this work, experimentally obtained residual TL signal and its origin is studied for CaSO4:Dy-based TL dosemeter through numerical simulation and role of deeper traps has been discussed. © The Author 2017. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  12. Thin CaSO4:Dy thermoluminescent dosimeters for calibration of 90Sr+90Y applicators.

    PubMed

    Antonio, Patrícia L; Oliveira, Mércia L; Caldas, Linda V E

    2012-04-01

    Clinical applicators are used in brachytherapy to treat superficial lesions of skin and eye. They should be periodically calibrated according to quality control programs and international recommendations. Thin CaSO(4):Dy thermoluminescent dosimeters were used to calibrate various applicators with a dermatological applicator as a reference. The obtained absorbed dose rates were compared with those quoted in their calibration certificates. Depth-dose curves were constructed for all the applicators. A mail dosimetry system was developed for calibration of clinical applicators. Copyright © 2012 Elsevier Ltd. All rights reserved.

  13. X-ray absorption spectroscopy and X-ray photoelectron spectroscopy studies of CaSO 4:Dy thermoluminescent phosphors

    NASA Astrophysics Data System (ADS)

    Bakshi, A. K.; Jha, S. N.; Olivi, L.; Phase, D. M.; Kher, R. K.; Bhattacharyya, D.

    2007-11-01

    Extended X-ray absorption fine structure (EXAFS) measurements have been carried out on CaSO4:Dy phosphor samples at the Dy L3 edge with synchrotron radiation. Measurements were carried out on a set of samples which were subjected to post-preparation annealing at different temperatures and for different cycles. The EXAFS data have been analysed to find the Dy-S and Dy-O bond lengths in the neighbourhood of the Dy atoms in a CaSO4 matrix. The observations from EXAFS measurements were verified with XANES and XPS techniques. On the basis of these measurements, efforts were made to explain the loss of thermoluminescence sensitivity of CaSO4:Dy phosphors after repeated cycles of annealing at 400 °C in air for 1 h.

  14. PTFE Additive and Re-annealing Effect on Thermoluminescence Response of CaSO4:Dy Derived from Co-precipitation Method

    NASA Astrophysics Data System (ADS)

    Nuraeni, Nunung; Dwi Septianto, Ricky; Iskandar, Ferry; Haryanto, Freddy; Waris, Abdul; Hiswara, Eri

    2017-07-01

    Effect of re-annealing treatment in thermoluminescence response of thermoluminescent dosimeter (TLD) CaSO4:Dy and CaSO4:Dy with PTFE (Polytetrafluoroethylene) addition was investigated. CaSO4:Dy was prepared by a co-precipitation method. The PTFE was added before re-annealing treatment which the mass ratio of CaSO4:Dy and PTFE was fixed to 2:3. The re-annealing treatments of the samples were done at temperature 700 °C for 1 hr. The obtained samples were characterized using a Fourier-transform infrared (FTIR) and X-ray diffraction (XRD) to observe the molecule bonding in sample and crystal properties, respectively. From the experimental results, it was observed that the thermoluminescence intensity of CaSO4:Dy, CaSO4:Dy re-annealed at 700 °C, and CaSO4:Dy + PTFE re-annealed at 700 °C are 57.03, 75.15, and 1191.11 nC, respectively. The intensity of 700 °C-re-annealed CaSO4:Dy increased significantly after PTFE addition.

  15. The UM-Dearborn Observatory: Variable-object Research from an Urban Site

    NASA Astrophysics Data System (ADS)

    Clyne, Elisabeth; Clarkson, William I.; Rasmussen, Eric J; Bord, Donald J.; Dage, Kristen; Matzke, David; Swift, Carrie

    2014-06-01

    Since its construction in 2007, the UM-Dearborn Observatory has provided a valuable educational tool both for students at UM-Dearborn and our neighbor-institution the Henry Ford Community College, and for the public at-large. We have recently (Jan 2014) added a systematic long-term research program with our 0.4m main telescope, to photometrically monitor a number of bright variable objects, including X-ray binaries and chemically-peculiar metal-poor stars over long timescales. We ultimately envision assembling a photometric database of (at least) four-color photometry over years-decades (i.e., many hundreds of orbital timescales for close binaries), with the preponderance of datapoints taken by undergraduates. To conduct this program, we have had to overcome a number of site challenges, the solutions of which will be useful to many programs using small telescopes at urban sites. The 0.4m telescope lies on a shared building within UM-Dearborn's main Fairlane campus - i.e., is about 20 meters above sea level, near several sources of water vapor (including an active steam vent less than 15 meters away), experiences significant mechanical vibrations from other building functions, and lies about 6 miles from central Detroit, well within the Detroit-Ann Arbor conurbation. Observing conditions are thus highly variable, with 5 arcsecond seeing typical and significant transparency variations observed even during a clear night. Nevertheless, we are now able to make scientifically useful observations in a semi-automatic way, to which our chosen scientific niche is well-suited. We present here our solutions to these challenges, along with initial results from our ongoing monitoring program.

  16. Design of a ROIC with 15um pitch for MWIR FPAs

    NASA Astrophysics Data System (ADS)

    Liang, Qinghua; Jiang, Dazhao; Chen, Honglei; Zhang, Qiwen; Ding, Ruijun

    2015-10-01

    A 640×512 readout integrated circuit (ROIC) with 15um pixel pitch for middle-wave infrared focal plane arrays (MWIR FPAs) is designed in this paper. The 15um pixel pitch presents several challenges to the ROIC design, such as achieving the required charge storage capacity to preserve the high SNR and reading or processing the pixel signals correctly to achieve the required frame rate. A novel structure that four neighboring pixels share one integration capacitor is presented as a feasible approach to getting a large charge capacity in the limited pixel area. Meanwhile, the pixel circuit chooses the direct injection (DI) which occupies the small layout area as the input stage for MW and contains two sample and hold modules to further increase the charge capacity. Moreover,the peripheral analog signal chain circuit, which is composed of a PMOS source follower, a column amplifier and the complementary output stage, is designed to transfer the signals from unit cell with less voltage loss,lower power consumption, lower noise and higher linearity. More importantly, in our design, only half chain circuit are required therefore the corresponding power consumption will be reduced greatly. In order to accommodate this design, two kinds of pixel signal readout sequences are compared. By adopting the 0.18um 1P6M mixed signal CMOS process, the circuit architecture can make the effective charge capacity of 13Me- per pixel with 1.38V final output range. The 4×4 circuit layout will be fulfilled as a whole and in this way the effective integration capacitor can be increased. According to the simulation results, this circuit works well under 3.3V power supply and achieves 10MHZ readout rate and less than 0.1% nonlinearity.

  17. VizieR Online Data Catalog: Galactic planetary nebulae 24um observations (Phillips+, 2011)

    NASA Astrophysics Data System (ADS)

    Phillips, J. P.; Marquez-Lugo, R. A.

    2015-07-01

    We have acquired 24um profiles images and fluxes for 224 Galactic PNe. The positions of the sources were taken from the Acker et al. (1992, Cat. V/84), MASH I (Parker et al., 2006MNRAS.373...79P, Cat. V/127) and MASH II (Miszalski et al., 2008MNRAS.384..525M, Cat. V/127) catalogues, and correspond to the so-called 'true' PNe whose identification is regarded as being highly probable. Sources designated as 'likely' or 'possible' are excluded from this analysis. The MISPGAL results were taken between 2005 and 2006 using the mips. (1 data file).

  18. Low-Power Differential SRAM design for SOC Based on the 25-um Technology

    NASA Astrophysics Data System (ADS)

    Godugunuri, Sivaprasad; Dara, Naveen; Sambasiva Nayak, R.; Nayeemuddin, Md; Singh, Yadu, Dr.; Veda, R. N. S. Sunil

    2017-08-01

    In recent, the SOC styles area unit the vast complicated styles in VLSI these SOC styles having important low-power operations problems, to comprehend this we tend to enforced low-power SRAM. However these SRAM Architectures critically affects the entire power of SOC and competitive space. To beat the higher than disadvantages, during this paper, a low-power differential SRAM design is planned. The differential SRAM design stores multiple bits within the same cell, operates at minimum in operation low-tension and space per bit. The differential SRAM design designed supported the 25-um technology using Tanner-EDA Tool.

  19. Cliché fabrication method using precise roll printing process with 5 um pattern width

    NASA Astrophysics Data System (ADS)

    Shin, Yejin; Kim, Inyoung; Oh, Dong-Ho; Lee, Taik-Min

    2016-09-01

    Among the printing processes for printed electronic devices, gravure offset and reverse offset method have drawn attention for its fine pattern printing possibility. These printing methods use cliché, which has critical effect on the final product precision and quality. In this research, a novel precise cliché replica method is proposed. It consists of copper sputtering, precise mask pattern printing with 5 um width using reverse offset printing, Ni electroplating, lift-off, etching, and DLC coating. We finally compare the fabricated replica cliché with the original one and print out precise patterns using the replica cliché.

  20. Thermoluminesence of gamma rays irradiated CaSO4 nanorods doped with different elements

    NASA Astrophysics Data System (ADS)

    Salah, Numan

    2015-01-01

    Nanorods of calcium sulfate (CaSO4) activated by Ag, Cu, Dy, Eu and Tb were synthesized by the co-precipitation technique. They were irradiated by γ-rays in a wide range of exposures and studied for their thermoluminesence (TL) properties. The as-synthesized samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL) emission spectra. SEM images show that the samples doped with rare earths elements (i.e. Dy, Eu and Tb) have thinner nanorods than the other samples, while XRD pattern shows a complete crystalline structures in a monoclinic phase. The TL glow curves of these samples show two components. The first one include low temperature glow peaks at around 125 °C, while the second component shows high temperature peaks in the range 230-270 °C. These glow peaks diver from sample to sample by their TL intensity. The TL results are promising, particularly that of Tb and Eu. Tb doped sample is found to be a highly TL sensitive with a prominent glow peak at around 270 °C, while Eu has created very active, high dense electron traps. The later shows quite linear response in the whole studied exposures i.e. 10 Gy-10 kGy. These results show that Eu or Tb doped CaSO4 nanorods might be proper candidates as dosimeters for high doses of ionizing radiations used in irradiation of foods and seeds.

  1. Electronic excitations and self-trapping of electrons and holes in CaSO4

    NASA Astrophysics Data System (ADS)

    Kudryavtseva, I.; Klopov, M.; Lushchik, A.; Lushchik, Ch; Maaroos, A.; Pishtshev, A.

    2014-04-01

    A first-principles study of the electronic properties of a CaSO4 anhydrite structural phase has been performed. A theoretical estimation for the fundamental band gap (p → s transitions) is Eg = 9.6 eV and a proper threshold for p → d transitions is Epd = 10.8 eV. These values agree with the data obtained for a set of CaSO4 doped with Gd3+, Dy3+, Tm3+ and Tb3+ ions using the methods of low-temperature highly sensitive luminescence and thermoactivation spectroscopy. The results are consistent with theoretical predictions of a possible low-temperature self-trapping of oxygen p-holes. The hopping diffusion of hole polarons starts above ˜40 K and is accompanied by a ˜50-60 K peak of thermally stimulated luminescence of RE3+ ions caused due to the recombination of hole polarons with the electrons localized at RE3+. There is no direct evidence of the self-trapping of heavy d-electrons, however, one can argue that their motion rather differs from that of conduction s-electrons.

  2. Complex terbium luminescence centers in spectral transformers based on CaSO4

    NASA Astrophysics Data System (ADS)

    Kudryavtseva, I.; Lushchik, A.; Lushchik, Ch.; Maaroos, A.; Nagirnyi, V.; Pazylbek, S.; Tussupbekova, A.; Vasil'chenko, E.

    2015-11-01

    The blue and green terbium luminescence excitation spectra (5-15 eV) at a temperature of 9 or 300 K have been measured for a set of CaSO4 : Tb3+ phosphors with calcium and terbium ions characterized by fundamental features, which were synthesized by the solid-state reaction method with variations in the composition of the raw material, the type of terbium compounds, and the concentration of introduced terbium. A comprehensive analysis of these data, emission spectra, and decay kinetics (with the rising stage) of the terbium luminescence has revealed that the main luminescence centers in an efficient phosphor with 4 at % Tb3+ each contain four closely spaced Tb3+ ions in calcium positions, as well as Na+ ions and hydrogen-containing radicals. In such complex luminescence centers, cooperative nonradiative resonant transitions in neighboring terbium ions leads to a nearly complete concentration of the terbium luminescence in the green spectral region (5 D 4 → 7 F J ). The quantum yield of the green luminescence in CaSO4 : Tb3+ (4 at %) exceeds unity, QY > 1, in the region of direct excitation of Tb3+ into the 5 d state (~5.9 eV) or excitation of oxyanions near the terbium ions (~8.1 eV).

  3. The Bagni di Lucca thermal waters (Tuscany, Italy): an example of Ca-SO 4 waters with high Na/Cl and low Ca/SO 4 ratios

    NASA Astrophysics Data System (ADS)

    Boschetti, Tiziano; Venturelli, Giampiero; Toscani, Lorenzo; Barbieri, Maurizio; Mucchino, Claudio

    2005-06-01

    The Bagni di Lucca thermal waters (Lucca province, Tuscany, Italy) have been well known since the Middle Age for their alleged curative properties. In the present work, the waters have been analysed for major and trace components and for O, H, S and Sr isotopes. The δ 2H and δ 18O values indicate a meteoric origin of the waters and the tritium content suggests long-term (more than 40 years) circulation at depth. The δ 34S values in dissolved sulphate of the warmest waters (Doccione, Paolina, Bernabò, Demidoff, Cova) indicate interaction with Triassic evaporites; however, the δ 34S values as well as the 87Sr/ 86Sr ratios in the waters appear to be a little higher (on average 17.6±0.4‰ and 0.70834±0.00006, respectively) than in Triassic sulphate minerals from the Northern Apennines (16.0±0.5‰ and 0.70778±0.00011). The waters are Ca-sulphate and characterised by high Na/Cl (≌2) and low Ca/SO 4 (≌0.7) mole ratios, high Sr (≤12 mg/L), F (≤4.2 mg/L), As (≤80 μg/L), Cs (≤70 μg/L), Rb (≤107 μg/L) and salinity (up to 3087 mg/L of total dissolved solids), low alkalinity, and pH in the range 6.3-7.5. Assuming equilibrium of the waters with anhydrite and chalcedony, the evaluated temperature and pressure are about 70-75 °C and 200-300 bar; considering the pressure as hydrostatic, the evaluated depth of equilibration approaches that of the metamorphic basement (about 3.0-3.8 km) underlying the carbonate-evaporite formations occurring in the area. Thermodynamic computations indicate that the high Na/Cl ratio and the low Ca/SO 4 ratio in the waters may be due to progressive dissolution of albite, anhydrite, dolomite and carbon dioxide accompanied by calcite precipitation. The linear correlations between the major and trace components, including 2H and 18O, demonstrate that thermal springs undergo dilution by low-salinity shallow waters which are recharged at low elevation.

  4. MIPAS observations of ozone chemiluminescence at 5 um analysed by a new non-lte model

    NASA Astrophysics Data System (ADS)

    Kaufmann, M.; Toselli, B.; Fernandez, R.; Gil-Lopez, S.; Lopez-Puertas, M.; Funke, B.; Stiller, G.; Hoffmann, L.; Riese, M.

    The proper characterization of ozone mid-ir radiances under non-LTE conditions is very important for the retrieval of mesospheric constituents such as ozone or carbon monoxide A recent study of Kaufmann et al 2006 indicated very large Envisat-MIPAS radiances at 4 8 um and suggested significant changes to standard non-LTE models of ozone to fit the measurements To verify and extend these results we developed a new ozone non-LTE model for the main vibrational-translational VT relaxation channels of ozone based on the theory of Schwartz-Slawsky-Herzfeld The VT relaxation rates are compared with the standard approach using a Landau-Teller type scaling law In addition to VT relaxation we also consider vibrational-vibrational energy exchange with O2 for various transitions and demonstrate the importance of this relaxation path for many vibrational levels Finally the non-LTE model parameters are constrained by comparing simulated 5um radiances with observations of the MIPAS instrument at stratospheric altitudes where the atmospheric state can be characterized from MIPAS measurements not affected by non-LTE

  5. Wissenschaft, die unsere Kultur verändert. Tiefenschichten des Streits um die Evolutionstheorie

    NASA Astrophysics Data System (ADS)

    Patzelt, Werner J.

    Die Evolutionstheorie ist eine der erfolgreichsten wissenschaftlichen Theorien. Sie erlaubt es, unsere Herkunft zu verstehen und riskante Merkmale gerade der menschlichen Spezies zu begreifen. Zugleich ist die Evolutionstheorie eine der umstrittensten Theorien. Das liegt nicht an ihrer empirischen Tragfähigkeit, sondern an ihrem Gegenstand. Sie handelt nämlich nicht nur - wie Hunderte andere wissenschaftliche Theorien - von der "Welt da draußen“, sondern vor allem auch von uns selbst und von unserem Platz in dieser Welt. Den einen gilt sie obendrein als Überwinderin religiösen Aberglaubens, den anderen als neuer Zugang zu Gott und seinem Wirken in der Welt. Ferner sehen die einen in der Evolution eine unbezweifelbare Tatsache gleich der Schwerkraft oder dem Holocaust, die anderen aber eine - noch oder dauerhaft - unbewiesene Hypothese oder gar eine falsche Schöpfungslehre. Und während die meisten Streitfragen solcher Art nach wechselseitig akzeptierten Regeln ‚normaler Wissenschaft‘ geklärt werden, wird bei der Frage nach dem Woher unserer Spezies und Kultur die intellektuelle Zuständigkeit von Wissenschaft mitunter überhaupt bezweifelt. Anscheinend geht es schon um recht tiefe Schichten unserer Kultur und nicht nur der wissenschaftlichen, wenn - wie seit 150 Jahren - um die Evolutionstheorie gestritten wird. Wie sehen diese Schichten aus?

  6. Traitement chirurgical des fractures articulaires du calcanéum par plaque vissée

    PubMed Central

    Hammou, Nassreddine; Abid, Hatim; Shimi, Mohammed; El Ibrahimi, Abdelhalim; El Mrini, Abdelmajid

    2015-01-01

    Les fractures du calcanéum sont peu fréquentes mais le plus souvent graves. Le traitement chirurgical par plaque vissée est ardemment défendu. L'objectif de notre travail rétrospectif est d’évaluer les résultats du traitement chirurgical des fractures articulaires du calcanéum à travers une série de 12 patients opérée aux service d'orthopédie du CHU Hassan II de Fès sur une durée de 3 ans, et les comparer aux données de la littérature. L’âge moyen dans notre série était de 34 ans, le geste opératoire était réalisé au 7ème jour. Tous nos patient ont bénéficie d'une réduction à foyer ouvert avec une ostéosynthèse par plaques vissées. Le recul moyen était de 12 mois et les résultats fonctionnels ont été évaluer selon le score de Kitaoka. PMID:26161214

  7. Uh and um in children with autism spectrum disorders or language impairment.

    PubMed

    Gorman, Kyle; Olson, Lindsay; Hill, Alison Presmanes; Lunsford, Rebecca; Heeman, Peter A; van Santen, Jan P H

    2016-08-01

    Atypical pragmatic language is often present in individuals with autism spectrum disorders (ASD), along with delays or deficits in structural language. This study investigated the use of the "fillers" uh and um by children ages 4-8 during the autism diagnostic observation schedule. Fillers reflect speakers' difficulties with planning and delivering speech, but they also serve communicative purposes, such as negotiating control of the floor or conveying uncertainty. We hypothesized that children with ASD would use different patterns of fillers compared to peers with typical development or with specific language impairment (SLI), reflecting differences in social ability and communicative intent. Regression analyses revealed that children in the ASD group were much less likely to use um than children in the other two groups. Filler use is an easy-to-quantify feature of behavior that, in concert with other observations, may help to distinguish ASD from SLI. Autism Res 2016, 9: 854-865. © 2016 International Society for Autism Research, Wiley Periodicals, Inc.

  8. Clinical Performance and Management Outcomes with the DecisionDx-UM Gene Expression Profile Test in a Prospective Multicenter Study.

    PubMed

    Plasseraud, Kristen Meldi; Cook, Robert W; Tsai, Tony; Shildkrot, Yevgeniy; Middlebrook, Brooke; Maetzold, Derek; Wilkinson, Jeff; Stone, John; Johnson, Clare; Oelschlager, Kristen; Aaberg, Thomas M

    2016-01-01

    Uveal melanoma management is challenging due to its metastatic propensity. DecisionDx-UM is a prospectively validated molecular test that interrogates primary tumor biology to provide objective information about metastatic potential that can be used in determining appropriate patient care. To evaluate the continued clinical validity and utility of DecisionDx-UM, beginning March 2010, 70 patients were enrolled in a prospective, multicenter, IRB-approved study to document patient management differences and clinical outcomes associated with low-risk Class 1 and high-risk Class 2 results indicated by DecisionDx-UM testing. Thirty-seven patients in the prospective study were Class 1 and 33 were Class 2. Class 1 patients had 100% 3-year metastasis-free survival compared to 63% for Class 2 (log rank test p = 0.003) with 27.3 median follow-up months in this interim analysis. Class 2 patients received significantly higher-intensity monitoring and more oncology/clinical trial referrals compared to Class 1 patients (Fisher's exact test p = 2.1 × 10(-13) and p = 0.04, resp.). The results of this study provide additional, prospective evidence in an independent cohort of patients that Class 1 and Class 2 patients are managed according to the differential metastatic risk indicated by DecisionDx-UM. The trial is registered with Clinical Application of DecisionDx-UM Gene Expression Assay Results (NCT02376920).

  9. Detector Technologies for Sub-500um High-Sensitivity PET Imaging via a Novel PET Insert Approach

    SciTech Connect

    Tai, Yuan-Chuan

    2011-12-21

    The objective of this project was to develop detector technologies that would enable an ultrahigh resolution Virtual Pinhole (VP) PET insert device to provide sub-500 um resolution high-sensitivity PET imaging of a mouse in the future. To achieve this goal, we proposed to develop and characterize finely pixellated cadmium zinc telluride (CZT) detectors and the associated readout electronics with the following specific aims: 1. Develop pixellated CZT detectors with 350um pitches using 2-5 mm substrates; characterize their spatial, energy and timing performance through experiments; and optimize the anode design with steering grid if found necessary. 2. Develop a high-bandwidth readout system using a novel ASIC that can be directly bonded to CZT detectors with 2048 anodes of 350um pitches; optimize its overall performance for VP-PET applications considering the tradeoffs between spatial resolution (in 3D), count rate capability, timing and energy resolutions. 3. Evaluate the performance of a VP-PET insert based on the proposed detector technology through Monte Carlo simulation and experimental validation. Overall, we have completed all three specific aims and demonstrated that pixelated CZT detectors of 350um pitches, combined with VP-PET geometry, can provide PET image resolution of ~460 um FWHM for small animal imaging applications.

  10. Phase relation of CaSO4 at high pressure and temperature up to 90 GPa and 2300 K

    NASA Astrophysics Data System (ADS)

    Fujii, Taku; Ohfuji, Hiroaki; Inoue, Toru

    2016-05-01

    Calcium sulfate (CaSO4), one of the major sulfate minerals in the Earth's crust, is expected to play a major role in sulfur recycling into the deep mantle. Here, we investigated the crystal structure and phase relation of CaSO4 up to ~90 GPa and 2300 K through a series of high-pressure experiments combined with in situ X-ray diffraction. CaSO4 forms three thermodynamically stable polymorphs: anhydrite (stable below 3 GPa), monazite-type phase (stable between 3 and ~13 GPa) and barite-type phase (stable up to at least 93 GPa). Anhydrite to monazite-type phase transition is induced by pressure even at room temperature, while monazite- to barite-type transition requires heating at least to 1500 K at ~20 GPa. The barite-type phase cannot always be quenched from high temperature and is distorted to metastable AgMnO4-type structure or another modified barite structure depending on pressure. We obtained the pressure-volume data and density of anhydrite, monazite- and barite-type phases and found that their densities are lower than those calculated from the PREM model in the studied P-T conditions. This suggests that CaSO4 is gravitationally unstable in the mantle and fluid/melt phase into which sulfur dissolves and/or sulfate-sulfide speciation may play a major role in the sulfur recycling into the deep Earth.

  11. Hemangioblastomas de fosa posterior: Reporte de 16 casos y revisión de la literatura

    PubMed Central

    Campero, Alvaro; Ajler, Pablo; Fernandez, Julio; Isolan, Gustavo; Paiz, Martin; Rivadeneira, Conrado

    2016-01-01

    Resumen Objetivo: El propósito del presente trabajo es presentar los resultados de 16 pacientes con diagnóstico de hemangioblastoma de fosa posterior (HBFP), operados con técnicas microquirúrgicas. Método: Desde junio de 2005 a diciembre de 2015, 16 pacientes con diagnóstico de HBFP fueron intervenidos quirúrgicamente. Se evaluó: sexo, edad, tipo de lesión (quística con nódulo, quística sin nódulo, sólida y sólida-quística), sintomatología y resultados postoperatorios. Resultados: De los 16 pacientes intervenidos, 11 fueron varones y 5 mujeres. La edad promedio fue de 44 años. La forma más frecuente fue quística con nódulo (57%), seguida por forma sólida (31%). Un solo caso presentó la forma quística sin nódulo (6%), y uno solo la forma sólido-quística (6%). La sintomatología más frecuente fue cefalea acompañada de síndrome cerebeloso (43%), seguido de síndrome de hipertensión endocraneana (25%). En todos los casos la resección fue completa, siendo necesario en un caso una embolización previa. Como complicaciones postoperatorias, 2 pacientes presentaron ataxia (mejoró al cabo de 3 meses), y 1 paciente presentó una fístula de LCR (se solucionó con un drenaje espinal externo). Se registró un óbito por complicaciones postoperatorias. Conclusión: Lo más frecuente de ver en pacientes con HBFP es la forma quística con nódulo, siendo su sintomatología predominante la cefalea acompañada de síndrome cerebeloso. La resección quirúrgica completa es posible, con una baja tasa de morbimortalidad. PMID:27999708

  12. Is the long case dead? 'Uh, I don't think so': the Uh/Um Index.

    PubMed

    Duvivier, Robbert; Veysey, Martin

    2016-12-01

    Current tools for clinical assessment are tedious and time-consuming, particularly the dreadful long case. There is a need for novel instruments that incorporate other aspects of competence. We propose such a method, namely the Uh/Um Index. Our innovation paper describes the rationale for using speech dysfluency and occurrences of filler words such as 'uh' and 'um' as a proxy for competence. This appears to have won initial support from senior clinicians in our institution. Additional research is needed (non-restricted grants are welcomed) to establish rigorous standard setting and to fund our attendance at overseas conferences to make the Uh/Um Index the new buzzword in medical education.

  13. Thermoluminescence and photoluminescence of cerium doped CaSO 4 nanosheets

    NASA Astrophysics Data System (ADS)

    Zahedifar, M.; Mehrabi, M.

    2010-12-01

    Thermoluminescence (TL) and photoluminescence (PL) characteristics of CaSO 4:Ce nanocrystalline prepared by hydrothermal method has been studied. Its TL glow curve contains three overlapping glow peaks at around 490, 505 and 521 K. Emission spectra band at 303 and 324 nm were observed for the orthorhombic phase of nanosheets. TL response of the prepared nanocrystalline to β and γ radiation was studied and the sensitivity of the nanosheets was found much more than that of analogous microcrystalline and is around 10 times higher than the well known high sensitive TL dosimeter LiF:Mg, Cu, P (GR-200) hot-pressed chips. TL kinetic parameters of this nanocrystalline are also presented.

  14. Preliminary Studies of Thermoluminescence Dosimeter (TLD) CaSO4:Dy Synthesis

    NASA Astrophysics Data System (ADS)

    Nuraeni, N.; Iskandar, F.; Waris, A.; Haryanto, F.

    2017-07-01

    Thermoluminescence dosimeter (TLD) CaSO4:Dy was synthesised by coprecipitation. The TLD was observed after radiation exposure to Strontium-90. The thermoluminescence intensity was read using a TLD Reader Harshaw 3500. The thermoluminescent response obtained was 59.29 nC. Then re-annealing was conducted with the temperature varied at 700, 800 and 900 °C. The thermoluminescent intensity obtained at temperatures of 700 °C, 800 °C and 900 °C was 66.12 nC, 169.45 nC, and 552.37 nC respectively. The sensitivity of the TLD increased in response to the re-annealing temperature rise. In addition to observing the thermoluminescence properties, a comparison was made between the TLD obtained from this experiment with an existing TLD in the market. Finally, also the glow-curve characteristics of the TLD were observed.

  15. Comparative genomic analysis of Mycobacterium iranicum UM_TJL against representative mycobacterial species suggests its environmental origin.

    PubMed

    Tan, Joon Liang; Ngeow, Yun Fong; Wee, Wei Yee; Wong, Guat Jah; Ng, Hien Fuh; Choo, Siew Woh

    2014-11-24

    Mycobacterium iranicum is a newly reported mycobacterial species. We present the first comparative study of M. iranicum UM_TJL and other mycobacteria. We found M. iranicum to have a close genetic association with environmental mycobacteria infrequently associated with human infections. Nonetheless, UM_TJL is also equipped with many virulence genes (some of which appear to be the consequence of transduction-related gene transfer) that have been identified in established human pathogens. Taken all together, our data suggest that M. iranicum is an environmental bacterium adapted for pathogenicity in the human host. This comparative study provides important clues and forms the basis for future functional studies on this mycobacterium.

  16. VizieR Online Data Catalog: XMM survey of 12um selected galaxies (Brightman+, 2011)

    NASA Astrophysics Data System (ADS)

    Brightman, M.; Nandra, K.

    2011-11-01

    We present an X-ray spectral analysis of 126 galaxies of the 12um galaxy sample (Rush et al. 1993, Cat. VII/157). By studying this sample at X-ray wavelengths, we aim to determine the intrinsic power, continuum shape and obscuration level in these sources. We improve upon previous works by the use of superior data in the form of higher signal-to-noise ratio spectra, finer spectral resolution and a broader bandpass from XMM-Newton. We pay particular attention to Compton thick active galactic nucleus (AGN) with the help of new spectral fitting models that we have produced, which are based on Monte Carlo simulations of X-ray radiative transfer, using both a spherical and torus geometry, and taking into account Compton scattering and iron fluorescence. (8 data files).

  17. Carbon ions irradiation on nano- and microcrystalline CaSO4 : Dy

    NASA Astrophysics Data System (ADS)

    Salah, Numan

    2008-08-01

    Nanoparticles of CaSO4 : Dy phosphor with a particle size of around 30 nm have been prepared by the chemical co-precipitation technique. Pellet samples of the nanomaterials were irradiated by a 75 MeV C6+ ion beam at the fluence range 1 × 109-1 × 1013 ions cm-2. Thermoluminescence (TL) glow curves of the irradiated samples were recorded and studied. The microcrystalline form of this sample is also included in the study with the aim of reporting a comparative measurement. The TL analysis shows that the glow curve of the nanomaterial has two peaks at around 166 and 210 °C. These peaks are similar to those induced in the microcrystalline sample with a slight difference in their TL response. The second peak is more prominent in the case of the microcrystalline sample at low fluences, while the first one dominates in the nanostructured sample mainly at higher fluences. The TRIM code based on Monte Carlo simulation was also used for calculating some ion beam parameters. Dosimetric properties of the carbon ion beam irradiated materials show that the nanostructure material has excellent features such as a simple glow curve structure and a linear TL response over a wider range than the corresponding microcrystalline sample. These results show that the nanostructure form of CaSO4 : Dy might be useful for detecting the high doses of carbon ions used in radiotherapy. Thermal analysis of the prepared nano- and microcrystalline materials was also done in the range 50-500 °C using thermogravimetry analysis and differential thermal analysis. No phase transitions within this range of heating for both the materials are observed.

  18. MiR-222 targeted PUMA to improve sensitization of UM1 cells to cisplatin.

    PubMed

    Jiang, Fangfang; Zhao, Wei; Zhou, Lijie; Liu, Zifeng; Li, Wenqing; Yu, Dongsheng

    2014-12-02

    microRNAs have been shown to play critical roles in regulating the chemosensitivity of cancer cells. As a member of the oncogenic miRNAs (oncomiRs), miR-222 has been reported to drive the oncogenesis of many types of malignancies. However, little is known concerning the specific role of miR-222 in human oral squamous cell carcinoma (OSCC). The present study explored the role and mechanism of miR-222 in increasing the expression of p53 up-regulated modulator of apoptosis (PUMA) and enhancing the sensitivity of OSCC to cisplatin (CDDP). Results showed that antisense (As)-miR-222 inhibits the expression of miR-222. In contrast, PUMA was dramaticallyup-regulated. IC50 values were significantly decreased in cells treated with As-miR-222 combined with CDDP, to a greater extent than in cells treated with CDDP alone. Furthermore, As-miR-222 enhanced apoptosis and inhibited the invasiveness of UM1 cells. Analysis of the above data suggested that, in UM1 cells, there might be a regulatory loop between miR-222 and PUMA, and that miR-222 inhibition increased the chemosensitivity to CDDP. These findings demonstrated that down-regulation of miR-222 could enhance the chemosensitivity of human OSCC cells to CDDP, and that the combination of As-miR-222 and CDDP could be an effective therapeutic strategy by boosting the expression of PUMA for controlling the growth of OSCC.

  19. The fungal UmSrt1 and maize ZmSUT1 sucrose transporters battle for plant sugar resources.

    PubMed

    Wittek, Anke; Dreyer, Ingo; Al-Rasheid, Khaled A S; Sauer, Norbert; Hedrich, Rainer; Geiger, Dietmar

    2017-03-15

    The biotrophic fungus Ustilago maydis causes the corn smut disease inducing tumor formation in its host Zea mays. Upon infection, the fungal hyphae invaginate the plasma membrane of infected maize cells establishing an interface where pathogen and host are separated only by their plasma membranes. At this interface the fungal and maize sucrose transporters, UmSrt1 and ZmSUT1, compete for extracellular sucrose in the corn smut/maize pathosystem. Here we biophysically characterized ZmSUT1 and UmSrt1 in Xenopus oocytes with respect to their voltage-, pH- and substrate-dependence and determined affinities towards protons and sucrose. In contrast to ZmSUT1, UmSrt1 has a high-affinity for sucrose and is relatively pH- and voltage-independent. Using these quantitative parameters, we developed a mathematical model to simulate the competition for extracellular sucrose at the contact zone between the fungus and the host plant. This approach revealed that UmSrt1 exploits the apoplastic sucrose resource, which forces the plant transporter into a sucrose export mode providing the fungus with sugar from the phloem. Importantly, the high sucrose concentration in the phloem appeared disadvantageous for the ZmSUT1, preventing sucrose recovery from the apoplastic space in the fungus/plant interface.

  20. "Um, I Can Tell You're Lying": Linguistic Markers of Deception versus Truth-Telling in Speech

    ERIC Educational Resources Information Center

    Arciuli, Joanne; Mallard, David; Villar, Gina

    2010-01-01

    Lying is a deliberate attempt to transmit messages that mislead others. Analysis of language behaviors holds great promise as an objective method of detecting deception. The current study reports on the frequency of use and acoustic nature of "um" and "like" during laboratory-elicited lying versus truth-telling. Results obtained using a…

  1. Correlated magnetic resonance imaging and ultramicroscopy (MR-UM) is a tool kit to assess the dynamics of glioma angiogenesis

    PubMed Central

    Breckwoldt, Michael O; Bode, Julia; Kurz, Felix T; Hoffmann, Angelika; Ochs, Katharina; Ott, Martina; Deumelandt, Katrin; Krüwel, Thomas; Schwarz, Daniel; Fischer, Manuel; Helluy, Xavier; Milford, David; Kirschbaum, Klara; Solecki, Gergely; Chiblak, Sara; Abdollahi, Amir; Winkler, Frank; Wick, Wolfgang; Platten, Michael; Heiland, Sabine; Bendszus, Martin; Tews, Björn

    2016-01-01

    Neoangiogenesis is a pivotal therapeutic target in glioblastoma. Tumor monitoring requires imaging methods to assess treatment effects and disease progression. Until now mapping of the tumor vasculature has been difficult. We have developed a combined magnetic resonance and optical toolkit to study neoangiogenesis in glioma models. We use in vivo magnetic resonance imaging (MRI) and correlative ultramicroscopy (UM) of ex vivo cleared whole brains to track neovascularization. T2* imaging allows the identification of single vessels in glioma development and the quantification of neovessels over time. Pharmacological VEGF inhibition leads to partial vascular normalization with decreased vessel caliber, density, and permeability. To further resolve the tumor microvasculature, we performed correlated UM of fluorescently labeled microvessels in cleared brains. UM resolved typical features of neoangiogenesis and tumor cell invasion with a spatial resolution of ~5 µm. MR-UM can be used as a platform for three-dimensional mapping and high-resolution quantification of tumor angiogenesis. DOI: http://dx.doi.org/10.7554/eLife.11712.001 PMID:26830460

  2. "Uh," "Um," and Autism: Filler Disfluencies as Pragmatic Markers in Adolescents with Optimal Outcomes from Autism Spectrum Disorder

    ERIC Educational Resources Information Center

    Irvine, Christina A.; Eigsti, Inge-Marie; Fein, Deborah A.

    2016-01-01

    Filler disfluencies--"uh" and "um"--are thought to serve distinct discourse functions. We examined fillers in spontaneous speech by youth with autism spectrum disorder (ASD), who struggle with pragmatic language, and by youth with ASD who have achieved an "optimal outcome" (OO), as well as in peers with typical…

  3. "Uh," "Um," and Autism: Filler Disfluencies as Pragmatic Markers in Adolescents with Optimal Outcomes from Autism Spectrum Disorder

    ERIC Educational Resources Information Center

    Irvine, Christina A.; Eigsti, Inge-Marie; Fein, Deborah A.

    2016-01-01

    Filler disfluencies--"uh" and "um"--are thought to serve distinct discourse functions. We examined fillers in spontaneous speech by youth with autism spectrum disorder (ASD), who struggle with pragmatic language, and by youth with ASD who have achieved an "optimal outcome" (OO), as well as in peers with typical…

  4. "Um, I Can Tell You're Lying": Linguistic Markers of Deception versus Truth-Telling in Speech

    ERIC Educational Resources Information Center

    Arciuli, Joanne; Mallard, David; Villar, Gina

    2010-01-01

    Lying is a deliberate attempt to transmit messages that mislead others. Analysis of language behaviors holds great promise as an objective method of detecting deception. The current study reports on the frequency of use and acoustic nature of "um" and "like" during laboratory-elicited lying versus truth-telling. Results obtained using a…

  5. A Report to the Joint Chairs of the Senate Budget and Taxation Committee and the House Appropriations Committee on the Workload of the UMS Faculty.

    ERIC Educational Resources Information Center

    Maryland Univ., College Park.

    This report provides data and recommendations on the workload and productivity of University of Maryland System (UMS) faculty. It outlines the state budgetary policy that mandates the report and explains UMS policy on faculty workload. The data in the report reflect teaching standards in place in 1993-94, prior to the adoption of the current UMS…

  6. Microwave-Assisted Extraction, Chemical Structures, and Chain Conformation of Polysaccharides from a Novel Cordyceps Sinensis Fungus UM01.

    PubMed

    Cheong, Kit-Leong; Wang, Lan-Ying; Wu, Ding-Tao; Hu, De-Jun; Zhao, Jing; Li, Shao-Ping

    2016-09-01

    Cordyceps sinensis is a well-known tonic food with broad medicinal properties. The aim of the present study was to investigate the optimization of microwave-assisted extraction (MAE) and characterize chemical structures and chain conformation of polysaccharides from a novel C. sinensis fungus UM01. Ion-exchange and gel filtration chromatography were used to purify the polysaccharides. The chemical structure of purified polysaccharide was determined through gas chromatography-mass spectrometry. Moreover, high performance size exclusion chromatography combined with refractive index detector and multiangle laser light scattering were conducted to analyze the molecular weight (Mw ) and chain conformation of purified polysaccharide. Based on the orthogonal design L9 , optimal MAE conditions could be obtained through 1300 W of microwave power, with a 5-min irradiation time at a solid to water ratio of 1:60, generating the highest extraction yield of 6.20%. Subsequently, the polysaccharide UM01-S1 was purified. The UM01-S1 is a glucan-type polysaccharide with a (1→4)-β-d-glucosyl backbone and branching points located at O-3 of Glcp with a terminal-d-Glcp. The Mw , radius of gyration (Rg ) and hydrodynamic radius (Rh ) of UM01-S1 were determined as 5.442 × 10(6)  Da, 21.8 and 20.2 nm, respectively. Using the polymer solution theory, the exponent (ν) value of the power law function was calculated as 0.38, and the shape factor (ρ = Rg /Rh ) was 1.079, indicating that UM01-S1 has a sphere-like conformation with a branched structure in an aqueous solution. These results provide fundamental information for the future application of polysaccharides from cultured C. sinensis in health and functional food area. © 2016 Institute of Food Technologists®

  7. Origin and characteristics of yardangs in the Um Al-Rimam depressions (N Kuwait)

    NASA Astrophysics Data System (ADS)

    Al-Dousari, Ali. M.; Al-Elaj, Maraheb; Al-Enezi, Eqbal; Al-Shareeda, Abdulaziz

    2009-03-01

    Although Arabia hosts one of the largest deserts in the world, studies regarding aeolian erosional features in general and yardangs in particular are rare. The principal aim of this study is to delineate and investigate the various forms of yardangs in the Um Al-Rimam depressions in the northern part of Kuwait. The study area consists of two main depressions connected by neck area made up of continental sediments. Both depressions are surrounded by a dissected escarpment and their floors host muddy playas. On lithological bases, three main types of yardang have been identified: 7 yardangs are sculptured in sandstones of Lower Fars Formation (Lower to Middle Miocene), 23 are carved in calcretic rocks of Ghar Formation (Oligocene to Lower Miocene), and 11 yardangs are developed in Quaternary sediments. Their mean orientation NW (297°) coincides with the prevailing direction of the strong local northwesterly wind called the shamal. The average length/width ratio is 1.5:1. The wide geographic distribution of yardangs around the margins of the northern depression is due to sand blasting. This is explained by the annual sand accumulation measured in the study area where the northern depression shows 143 times higher accumulation than the southern depression, the neck area and the platform above the depressions. Also, the field measurements for annual erosional rates show that the sides of the yardangs are more affected by erosion compared to their middle parts. Remarkably slight mineralogical variations were detected within the surface sediments of Um Al-Rimam depressions and the Quaternary muddy yardangs which indicate a common origin. The age of yardangs is unknown but annual erosional rates on a small Quaternary muddy yardang suggest that they range in age between 44 and 1500 years depending on yardang size. It is believed, as indicated from field observation and interpretation of aerial photos, that the majority of yardangs are pre-existing bedrock forms. These

  8. Ford/BASF/UM Activities in Support of the Hydrogen Storage Engineering Center of Excellence

    SciTech Connect

    Veenstra, Mike; Purewal, Justin; Xu, Chunchuan; Yang, Jun; Blaser, Rachel; Sudik, Andrea; Siegel, Don; Ming, Yang; Liu, Dong'an; Chi, Hang; Gaab, Manuela; Arnold, Lena; Muller, Ulrich

    2015-06-30

    Widespread adoption of hydrogen as a vehicular fuel depends critically on the development of low-cost, on-board hydrogen storage technologies capable of achieving high energy densities and fast kinetics for hydrogen uptake and release. As present-day technologies -- which rely on physical storage methods such as compressed hydrogen -- are incapable of attaining established Department of Energy (DOE) targets, development of materials-based approaches for storing hydrogen have garnered increasing attention. Material-based storage technologies have potential to store hydrogen beyond twice the density of liquid hydrogen. To hasten development of these ‘hydride’ materials, the DOE previously established three centers of excellence for materials storage R&D associated with the key classes of materials: metal hydrides, chemical hydrogen, and adsorbents. While these centers made progress in identifying new storage materials, the challenges associated with the engineering of the system around a candidate storage material are in need of further advancement. In 2009 the DOE established the Hydrogen Storage Engineering Center of Excellence with the objective of developing innovative engineering concepts for materials-based hydrogen storage systems. As a partner in the Hydrogen Storage Engineering Center of Excellence, the Ford-UM-BASF team conducted a multi-faceted research program that addresses key engineering challenges associated with the development of materials-based hydrogen storage systems. First, we developed a novel framework that allowed for a material-based hydrogen storage system to be modeled and operated within a virtual fuel cell vehicle. This effort resulted in the ability to assess dynamic operating parameters and interactions between the storage system and fuel cell power plant, including the evaluation of performance throughout various drive cycles. Second, we engaged in cost modeling of various incarnations of the storage systems. This analysis

  9. La implantacion del enfoque constructivista en el aula de ciencia: Estudio de caso multiple

    NASA Astrophysics Data System (ADS)

    Arroyo Betancourt, Luz I.

    Esta investigacion estudia la implantacion del enfoque constructivista en tres aulas de ciencia del contexto puertorriqueno. Se auscultaron las practicas educativas que utilizan maestras consideradas constructivistas y la correspondencia de sus practicas educativas con los elementos esenciales de la didactica que proponen los teoricos de los planteamientos constructivistas. Se ausculto, ademas, a que vision del enfoque constructivista responden las expresiones de las maestras acerca de su practica educativa y como compara con su quehacer, a la luz de los elementos esenciales de las visiones constructivistas piagetiana, social y radical. Se utilizo el diseno de estudio descriptivo de caso multiple. El estudio se baso en entrevistas a profundidad, revision de documentos y observacion no participativa a la sala de clases. El contexto fueron tres escuelas publicas de la Region Educativa de San Juan, una elemental, una intermedia y una superior. Los resultados confirmaron que la transicion hacia el enfoque constructivista es un proceso que toma tiempo, dedicacion y la participacion en adiestramientos y readiestramientos acerca del nuevo enfoque. Las maestras coinciden en la mayoria de las practicas educativas que utilizan para implantar el enfoque constructivista de ensenanza y difieren en algunas debido, probablemente, a que han tenido que adaptarlas a los correspondientes niveles de ensenanza: elemental, intermedio y superior. Dos de las maestras planifican por conceptos generadores, mientras que una de ellas planifica siguiendo la guia que recibe del Departamento de Educacion. Difieren ademas, en el enfasis que confieren al inquirir cientifico. Con relacion a la correspondencia entre la vision manifestada por las maestras a la luz de las visiones piagetiana, social y radical, aparentemente, las preguntas del protocolo de entrevistas no lograron evocar la informacion con suficiente profundidad, por lo que la investigadora tuvo que inferir las visiones de las

  10. Thermoluminescence (TL) properties and x-ray diffraction (XRD) analysis of high purity CaSO4:Dy TL material

    NASA Astrophysics Data System (ADS)

    Kamarudin, Nadira; Abdullah, Wan Saffiey Wan; Hamid, Muhammad Azmi Abdul; Dollah, Mohd Taufik

    2014-09-01

    This paper presents the characterization and TL properties of dysprosium (Dy) doped calcium sulfate (CaSO4) TL material produced by co-precipitation technique with 0.5mol% concentration of dopant. The morphology of the produced TL material was studied using scanning electron microscope (SEM) and the micrograph shows that rectangular parallelepiped shaped crystal with the average of 150 μm in length were produced. The crystallinity of the produced powder was studied using x-ray powder diffraction (XRD). The XRD spectra show that the TL material produced is high purity anhydrite CaSO4 with average crystallite size of 74 nm with orthorhombic crystal system. The TL behavior of produced CaSO4:Dy was studied using a TLD reader after exposure to gamma ray by Co60 source with the doses of 1,5 and 10 Gy. The glow curve shows linear response with glow peak around 230°C which is desired development in the field of radiation dosimetry.

  11. Operational experience of electronic active personal dosemeter and comparison with CaSo4:Dy TL dosemeter in Indian PHWR.

    PubMed

    Singh, Vishwanath P; Managanvi, S S; Bihari, R R; Bhat, H R

    2013-01-01

    Direct reading dosemeter has been used for day-to-day radiation exposure control and management for last four decades in Indian nuclear power plants (NPPs). Recently new real time, alarm and pre-alarm on equivalent dose/dose rate, storage of dose/dose rate and maximum dose rate, user-friendly electronic active personal dosemeter (APD) has been implemented into practice for the first time at Kaiga Atomic Power Station-3&4,  of Indian NPPs. The dosemeter showed tolerance level (L) 0.1085±0.0450 compared with 0.1869±0.0729 (average±SD) for CaSO4:Dy, TL dosemeter, having narrow range trumpet curve, nil electromagnetic interference. Records of >29 000 for APD and TL dosemeter were analysed for comparasion of the measurement of the individual dose. APD followed general acceptance rule of ±25 % for dose >1 mSv. Monthly Station collective dose by TL dosemeters and APD for normal reactor operation as well as outage are found in good agreement. Operational experiences and statistical analysis support that an APD dosemeter is reasonably equivalent to CaSO4:Dy TL dosemeter. The accuracy, reproducibility and repeatability of the measurement of radiation for (137)Cs are comparable with CaSO4:Dy, TL dosemeter. Operational experience of APD during the normal operation as well as outage showed as one of the best ALARA tool for occupational dose monitoring, control, management and future outage planning.

  12. Nano-fibrin stabilized CaSO4 crystals incorporated injectable chitin composite hydrogel for enhanced angiogenesis & osteogenesis.

    PubMed

    Arun Kumar, R; Sivashanmugam, A; Deepthi, S; Bumgardner, Joel D; Nair, Shantikumar V; Jayakumar, R

    2016-04-20

    Calcium sulfate (CaSO4), an excellent biodegradable bone forming agent that is an ideal choice as additive in gels, however, its disadvantage being poor gel rheology and angiogenesis. Here, we have synthesized chitin-CaSO4-nano-fibrin based injectable gel system which shows improved rheology and angiogenic potential. Rheological studies showed that the composite gel was a shear thinning gel with elastic modulus of 15.4±0.275kPa; a 1.67 fold increase over chitin control. SEM and XRD analyses revealed the effect of nano-fibrin (nFibrin) in transforming CaSO4 crystal shape from needle to hexagonal. It also masked the retarding effect of CaSO4 towards in vitro early cell attachment and angiogenesis using rabbit adipose derived mesenchymal stem cells (rASCs) and HUVECs, respectively. rASCs osteogenesis was confirmed by spectrophotometric endpoint assay, which showed 6-fold early increase in alkaline phosphatase levels and immuno-cytochemistry analysis. These in vitro results highlight the potential of injectable chitin-CaSO4-nFibrin gel for osteo-regeneration via enhanced angiogenesis.

  13. Investigation of the Crystal Structure of γ-CaSO 4, CaSO 4 · 0.5 H 2O, and CaSO 4 · 0.6 H 2O by Powder Diffraction Methods

    NASA Astrophysics Data System (ADS)

    Bezou, C.; Nonat, A.; Mutin, J.-C.; Christensen, A. Nørlund; Lehmann, M. S.

    1995-06-01

    The crystal structures of soluble anhydrite, γ-CaSO4, and the two calcium sulfate subhydrates, CaSO4 · 0.5 H2O and CaSO4 · 0.6 H2O, were investigated by powder diffraction methods; using synchrotron X ray radiation and neutron powder diffraction, and the positions of the water molecules in the structure were determined. γ-CaSO4 is orthorhombic, space group C222 (N°21) with a = 12.0777(7), b = 6.9723(4), c = 6.3040(2) Å (from the neutron diffraction data), and Z = 6. The structure contains two different chains of CaO8 coordination polyhedra (mean Ca-O = 2,460 Å) held together by SO2-4 ions. CaSO4 · 0.5 H2O (SH1) is monoclinic, space group I121 (No. 5) with a = 12.0317(4), b = 6.9269(2), c = 12.6712(3) Å, β = 90.27(1)° (from the neutron diffraction data), and Z = 12. The structure contains chains of alternating CoO8 and CaO9 coordination polyhedra held together by the SO2-4 ions. The average Ca-O distances in the CoO8 and in the CaO9 coordination polyhedra are 2.469 and 2.500 Å, respectively. A monoclinic structure is proposed for CaSO4 · 0.6 H2O (SH2), space group I121 (No. 5) with a = 11.9845(4), b = 6.9292(2), c = 12.7505(3) Å, β = 90° (from the neutron diffraction data), and Z = 12. The structure contains chains of CaO8 and chains of CaO9 coordination polyhedra, both held together by the SO2-4 ions. The average Ca-O distances in the CoO8 and in the CaO9 coordination polyhedra are 2.538 and 2.494 Å, respectively. All of the three structures have channels where the water molecules associated with the CoO9 polyhedra are located in the case of subhydrates. In the case of the hemihydrate, the water molecules form hydrogen bonds with oxygen atoms of the sulfate tetrahedra of 2.85-3,03 Å. In the case of CaSO4 · 0.6 H2O, two adjacent water molecules in the channels are linked by a strong hydrogen bond (O-H = 1.9 Å).

  14. The French Muséum national d'histoire naturelle vascular plant herbarium collection dataset.

    PubMed

    Le Bras, Gwenaël; Pignal, Marc; Jeanson, Marc L; Muller, Serge; Aupic, Cécile; Carré, Benoît; Flament, Grégoire; Gaudeul, Myriam; Gonçalves, Claudia; Invernón, Vanessa R; Jabbour, Florian; Lerat, Elodie; Lowry, Porter P; Offroy, Bérangère; Pimparé, Eva Pérez; Poncy, Odile; Rouhan, Germinal; Haevermans, Thomas

    2017-02-14

    We provide a quantitative description of the French national herbarium vascular plants collection dataset. Held at the Muséum national d'histoire naturelle, Paris, it currently comprises records for 5,400,000 specimens, representing 90% of the estimated total of specimens. Ninety nine percent of the specimen entries are linked to one or more images and 16% have field-collecting information available. This major botanical collection represents the results of over three centuries of exploration and study. The sources of the collection are global, with a strong representation for France, including overseas territories, and former French colonies. The compilation of this dataset was made possible through numerous national and international projects, the most important of which was linked to the renovation of the herbarium building. The vascular plant collection is actively expanding today, hence the continuous growth exhibited by the dataset, which can be fully accessed through the GBIF portal or the MNHN database portal (available at: https://science.mnhn.fr/institution/mnhn/collection/p/item/search/form). This dataset is a major source of data for systematics, global plants macroecological studies or conservation assessments.

  15. The French Muséum national d'histoire naturelle vascular plant herbarium collection dataset

    NASA Astrophysics Data System (ADS)

    Le Bras, Gwenaël; Pignal, Marc; Jeanson, Marc L.; Muller, Serge; Aupic, Cécile; Carré, Benoît; Flament, Grégoire; Gaudeul, Myriam; Gonçalves, Claudia; Invernón, Vanessa R.; Jabbour, Florian; Lerat, Elodie; Lowry, Porter P.; Offroy, Bérangère; Pimparé, Eva Pérez; Poncy, Odile; Rouhan, Germinal; Haevermans, Thomas

    2017-02-01

    We provide a quantitative description of the French national herbarium vascular plants collection dataset. Held at the Muséum national d'histoire naturelle, Paris, it currently comprises records for 5,400,000 specimens, representing 90% of the estimated total of specimens. Ninety nine percent of the specimen entries are linked to one or more images and 16% have field-collecting information available. This major botanical collection represents the results of over three centuries of exploration and study. The sources of the collection are global, with a strong representation for France, including overseas territories, and former French colonies. The compilation of this dataset was made possible through numerous national and international projects, the most important of which was linked to the renovation of the herbarium building. The vascular plant collection is actively expanding today, hence the continuous growth exhibited by the dataset, which can be fully accessed through the GBIF portal or the MNHN database portal (available at: https://science.mnhn.fr/institution/mnhn/collection/p/item/search/form). This dataset is a major source of data for systematics, global plants macroecological studies or conservation assessments.

  16. Diagnosing resolution sensitivity over the Maritime Continent in the MetUM

    NASA Astrophysics Data System (ADS)

    Woolnough, S. J.; Bush, S. J.; Schiemann, R.; Turner, A. G.; Martin, G.

    2014-12-01

    The Maritime Continent, with over 25,000 islands ranging from hundreds to 780,000 square kilometers, is a key challenge for cumulus-convection and coastal parameterizations in climate resolution GCMs. We studied the resolution sensitivity of precipitation over the Maritime Continent in the MetUM AGCM at horizontal resolutions ranging from approximately 200 to 40 km. We found robust increases in summer precipitation over the Maritime Continent Islands and decreases in summer precipitation over the northern Maritime Continent seas, similar to the resolution sensitivity seen in other studies. These precipitation changes near the Maritime Continent can be large, exceeding 5 mm/day, and are the largest changes in tropical precipitation as resolution is increased. To explore the source of these changes, we present novel experiments to diagnose the role of increased resolution of different components of the AGCM, such as the orography, coastlines and atmospheric dynamics, in the Maritime Continent domain. Our results suggest that total orographic precipitation in the Maritime Continent domain is resolution dependent at these scales. While increased precipitation associated with the higher resolution of the mean orography (see Figure 1) is compensated for by decreasing precipitation associated with changes in the subgrid orography and its effect on parameterized drag, the total orographic precipitation is not equal across resolutions. Changes in moisture convergence, precipitation and circulation due to improved resolution of the orography then affect precipitation in the wider Indo-Pacific region.

  17. The French Muséum national d’histoire naturelle vascular plant herbarium collection dataset

    PubMed Central

    Le Bras, Gwenaël; Pignal, Marc; Jeanson, Marc L.; Muller, Serge; Aupic, Cécile; Carré, Benoît; Flament, Grégoire; Gaudeul, Myriam; Gonçalves, Claudia; Invernón, Vanessa R.; Jabbour, Florian; Lerat, Elodie; Lowry, Porter P.; Offroy, Bérangère; Pimparé, Eva Pérez; Poncy, Odile; Rouhan, Germinal; Haevermans, Thomas

    2017-01-01

    We provide a quantitative description of the French national herbarium vascular plants collection dataset. Held at the Muséum national d’histoire naturelle, Paris, it currently comprises records for 5,400,000 specimens, representing 90% of the estimated total of specimens. Ninety nine percent of the specimen entries are linked to one or more images and 16% have field-collecting information available. This major botanical collection represents the results of over three centuries of exploration and study. The sources of the collection are global, with a strong representation for France, including overseas territories, and former French colonies. The compilation of this dataset was made possible through numerous national and international projects, the most important of which was linked to the renovation of the herbarium building. The vascular plant collection is actively expanding today, hence the continuous growth exhibited by the dataset, which can be fully accessed through the GBIF portal or the MNHN database portal (available at: https://science.mnhn.fr/institution/mnhn/collection/p/item/search/form). This dataset is a major source of data for systematics, global plants macroecological studies or conservation assessments. PMID:28195585

  18. Raman spectra of the different phases in the CaSO4-H2O system.

    PubMed

    Prieto-Taboada, Nagore; Gómez-Laserna, Olivia; Martínez-Arkarazo, Irantzu; Olazabal, María Ángeles; Madariaga, Juan Manuel

    2014-10-21

    Although it is known that the CaSO4/H2O system is formed by at least five different phases, this fact is not correctly documented in Raman spectroscopy studies. The main problem detected in the literature was the incorrect definition of the anhydrite, which produced the assignation of different spectra for a single compound. In this sense, two different spectra were clearly identified from the bibliography, which showed different main Raman bands at 1017 or 1025 cm(-1), although anhydrite could be present even as three different polymorphous species with different structures. A better understanding of the whole system obtained from a review of the literature allowed new conclusions to be established. Thanks to that revision and the development of different thermodynamical experiments by Raman spectroscopy, the Raman spectra of each phase were successfully identified for the first time. In this way, the main Raman bands of gypsum, bassanite, anhydrite III, anhydrite II and anhydrite I were identified at 1008, 1015, 1025, 1017 and 1017 cm(-1), respectively. To conclude this work, the contradictions found in literature were critically summarized.

  19. Coastal nutrification and coral health at Porto Seguro reefs, Brazil

    NASA Astrophysics Data System (ADS)

    Costa, O.; Attrill, M.; Nimmo, M.

    2003-04-01

    Human activities have substantially increased the natural flux of nutrients to coastal systems worldwide. In Brazilian reefs, all major stresses (sedimentation, overfishing, tourism-related activities and nutrification) are human induced. To assess nutrification levels in Brazilian coastal reefs, measurements of the distribution patterns of nutrients and chlorophyll concentrations were conducted in three nearshore and offshore reefs with distinct nutrient inputs along the south coast of Bahia State. Seawater and porewater samples were analysed for soluble reactive phosphorus, total oxidised nitrogen and reactive silica. Benthic surveys were performed at all sites to investigate the relationships between benthic community composition and nutrient and chlorophyll concentrations. Sampling was undertaken in dry and rainy seasons. Results of both seawater and porewater nutrient measurements revealed the occurrence of consistent spatial and temporal patterns. An inshore-offshore gradient reflects the occurrence of land-based point sources, with significant amount of nutrients being delivered by human activities on the coast (untreated sewage and groundwater seepage). Another spatial gradient is related to distance from a localized source of pollution (an urban settlement without sewerage treatment) with two nearshore reefs presenting distinct nutrient and chlorophyll concentrations. Seasonal variations suggest that submarine groundwater discharge (SGD) is the primary source of nutrients for the coastal reefs during rainy season. The data also suggests that the SGD effect is not restricted to nearshore reefs, and may be an important factor controlling the differences between landward and seaward sides on the offshore reef. Benthic community assessment revealed that turf alga is the dominant group in all studied reefs and that zoanthids are the organisms most adapted to take advantage of nutrient increase in coastal areas. At nearshore reefs, there was a negative correlation between zoanthids and algal abundance and a positive correlation with the amount of available space for settlement. On the offshore reef, correlation of algal cover with both zoanthids and available space were negative, suggesting that hard substrate may be the primary limiting factor for algal settlement and growth in the nearshore reefs. Highly variable physical disturbances (like wave energy and low tide exposure) between landward and seaward reef sides appear to be the factors controlling algal distribution in the offshore reef. Highly spatial variability in coral cover ultimately reflects the patchy distribution of stony corals over the reefs.

  20. Severe Weather Guide - Mediterranean Ports - 28. Porto Torres

    DTIC Science & Technology

    1989-06-01

    Physical Oceeuiography Haraldsgade 6 2200 Copenhagen N. Denmark The British Library Science Reference Library (A) 25 Southampton Bldgs. Chancery Lane...S.W.I. England Belgian Air Staff VS3/CTL-MET Everestraat 1 1140 Brussels Belgium Library , Institute of Oceanographic Sciences Attn: Director Wo... Science Applications International Corporation 6b. OFFICE SYMBOL (If applicable) 6c. ADDRESS {City, State, and ZIP Code) Monterey, CA 93940 8a. NAME

  1. VizieR Online Data Catalog: A dust model for bet Pic from 0.58 to 870um (Ballering+, 2016)

    NASA Astrophysics Data System (ADS)

    Ballering, N. P.; Su, K. Y. L.; Rieke, G. H.; Gaspar, A.

    2016-08-01

    β Pic was imaged with the HST/STIS CCD in coronagraphic (50CORON) mode under program GO-12551 (PI: Apai), and the results of these observations were published in Apai et al. (2015ApJ...800..136A). The instrument bandpass is set by the response of the CCD and centered at 0.58um. We searched the HST archive and found previously unpublished observations of β Pic with the WFC3 instrument in the IR channel (filter F110W at ~1.16um) from program GO-11150 (PI: Graham). The Spitzer/MIPS observations of β Pic were taken under the Spitzer Guaranteed Time Observing Program 90 (PI: M. Werner). The data at all three bands (24, 70, and 160um) are published here for the first time. Two sets of 24um observations were obtained. The first set was obtained on 2004 March 20, the second set of data was obtained on 2004 April 11. Two sets of 70um observations were obtained. The first set was obtained on 2004 April 12. The second set was obtained on 2005 April 4. Herschel/PACS 70um scan map observations of β Pic (PI G. Olofsson, observation IDs 1342186612 and 1342186613) were published by Vandenbussche et al. (2010A&A...518L.133V). We used the ALMA 870um continuum image previously published by Dent et al. (2014Sci...343.1490D). (1 data file).

  2. VizieR Online Data Catalog: 1-20um observations of Herbig-Haro objects (Molinari+ 1993)

    NASA Astrophysics Data System (ADS)

    Molinari, S.; Liseau, R.; Lorenzetti, D.

    1993-04-01

    For 58 exciting sources of Herbig-Haro objects/jets (HHES) we present a catalogue of photometric data for the infrared spectral bands JHKLMNQ (1-20 um). This catalog is based on our own observations and published information available up to May 1992. For each source, these data are presented in chronological order. In addition to the broad-band data, narrow-band N(8-13 um) photometric data are also provided. The flux calibration for each observational equipment is explicitly noted as the diaphragm sizes are used. The same kind of information for the established members of the FU Ori class is complementing the HHES catalogue. The frequency of observations and the photometric quality of the catalogued data are shortly discussed. (4 data files).

  3. VizieR Online Data Catalog: SCUBA-2 850um survey in σ Ori cluster (Williams+, 2013)

    NASA Astrophysics Data System (ADS)

    Williams, J. P.; Cieza, L. A.; Andrews, S. M.; Coulson, I. M.; Barger, A. J.; Casey, C. M.; Chen, C.-C.; Cowie, L. L.; Koss, M.; Lee, N.; Sanders, D. B.

    2014-09-01

    We observed a circular region with diameter 0.5° (about the diameter of the full Moon) towards the sigma Orionis cluster at 850um. The data were taken in queue mode over numerous observing runs from 2011 October to 2013 January (programme IDs: M11BH02A, M12AH02A and M12BH47A) in median (JCMT band 3) weather conditions, defined by the zenith optical depths at 225GHz lying between 0.08 and 0.12. This corresponds to precipitable water vapour levels ~2-3mm and zenith optical depths at 850um ~0.25-0.35. The total on-source integration time was 31h. (1 data file).

  4. VizieR Online Data Catalog: ALMA 870um obs. of HerMES galaxies (Bussmann+, 2015)

    NASA Astrophysics Data System (ADS)

    Bussmann, R. S.; Riechers, D.; Fialkov, A.; Scudder, J.; Hayward, C. C.; Cowley, W. I.; Bock, J.; Calanog, J.; Chapman, S. C.; Cooray, A.; de Bernardis, F.; Farrah, D.; Fu, H.; Gavazzi, R.; Hopwood, R.; Ivison, R. J.; Jarvis, M.; Lacey, C.; Loeb, A.; Oliver, S. J.; Perez-Fournon, I.; Rigopoulou, D.; Roseboom, I. G.; Scott, D.; Smith, A. J.; Vieira, J. D.; Wang, L.; Wardlow, J.

    2016-02-01

    ALMA 870um data were obtained during Cycle 0 from 2012 June to December (Program 2011.0.00539.S; PI: D. Riechers). Optical imaging observations (ugriz) using the Gemini Multi-Object Spectrograph-South (GMOS-S) were conducted in queue mode during the 2013B semester as part of program GS-2013B-Q-77 (PI: R. S. Bussmann). (3 data files).

  5. VizieR Online Data Catalog: Spiderweb galaxy 870um and 1.4GHz images (Dannerbauer+, 2014)

    NASA Astrophysics Data System (ADS)

    Dannerbauer, H.; Kurk, J. D.; De Breuck, C.; Wylezalek, D.; Santos, J. S.; Koyama, Y.; Seymour, N.; Tanaka, M.; Hatch, N.; Altieri, B.; Coia, D.; Galametz, A.; Kodama, T.; Miley, G.; Roettgering, H.; Sanchez-Portal, M.; Valtchanov, I.; Venemans, B.; Ziegler, B.

    2014-11-01

    We provide both the APEX LABOCA 870um and the EVLA 1.4GHz signal map of the field around the high-z radio galaxy MRC1138-262. In addition, we make the integration and signal-to-noise map of the LABOCA observations available. The LABOCA signal and S/N map are in Jy, the integration map in seconds and the VLA 1.4GHz signal map is in uJy. (2 data files).

  6. Far-ultraviolet spectroscopy of the quasar UM 675 with the faint object spectrograph on the Hubble Space Telescope

    NASA Technical Reports Server (NTRS)

    Beaver, E. A.; Burbidge, E. M.; Cohen, Ross D.; Junkkarinen, Vesa T.; Lyons, Ronald W.

    1991-01-01

    To investigate the far-UV spectral properties of a QSO and to look for evidence of He I 584 A emission and absorption the Faint Object Spectrograph aboard the HST was used to observed UM 675. Light is detected down to 520 A in the object in the rest frame and limits are set to He I emission, the He I Gunn-Peterson effect at z = 2.148, and Ly-alpha absorption at z roughly 0.5.

  7. UM 625 REVISITED: MULTIWAVELENGTH STUDY OF A SEYFERT 1 GALAXY WITH A LOW-MASS BLACK HOLE

    SciTech Connect

    Jiang Ning; Dong Xiaobo; Yang Huan; Wang Junxian; Ho, Luis C. E-mail: xbdong@ustc.edu.cn

    2013-06-10

    UM 625, previously identified as a narrow-line active galactic nucleus (AGN), actually exhibits broad H{alpha} and H{beta} lines whose width and luminosity indicate a low black hole (BH) mass of 1.6 Multiplication-Sign 10{sup 6} M{sub Sun }. We present a detailed multiwavelength study of the nuclear and host galaxy properties of UM 625. Analysis of Chandra and XMM-Newton observations suggests that this system contains a heavily absorbed and intrinsically X-ray weak ({alpha}{sub ox} = -1.72) nucleus. Although not strong enough to qualify as radio loud, UM 625 does belong to a minority of low-mass AGNs detected in the radio. The broadband spectral energy distribution constrains the bolometric luminosity to L{sub bol} Almost-Equal-To (0.5-3) Multiplication-Sign 10{sup 43} erg s{sup -1} and L{sub bol}/L{sub Edd} Almost-Equal-To 0.02-0.15. A comprehensive analysis of Sloan Digital Sky Survey and Hubble Space Telescope images shows that UM 625 is a nearly face-on S0 galaxy with a prominent, relatively blue pseudobulge (Sersic index n = 1.60) that accounts for {approx}60% of the total light in the R band. The extended disk is featureless, but the central {approx}150-400 pc contains a conspicuous semi-ring of bright, blue star-forming knots, whose integrated ultraviolet luminosity suggests a star formation rate of {approx}0.3 M{sub Sun} yr{sup -1}. The mass of the central BH roughly agrees with the value predicted from its bulge velocity dispersion but is significantly lower than that expected from its bulge luminosity.

  8. VizieR Online Data Catalog: Herschel SPIRE/FTS 194-671um survey of GOALS LIRGs (Lu+, 2017)

    NASA Astrophysics Data System (ADS)

    Lu, N.; Zhao, Y.; Diaz-Santos, T.; Xu, C. K.; Gao, Y.; Armus, L.; Isaak, K. G.; Mazzarella, J. M.; van der Werf, P. P.; Appleton, P. N.; Charmandaris, V.; Evans, A. S.; Howell, J.; Iwasawa, K.; Leech, J.; Lord, S.; Petric, A. O.; Privon, G. C.; Sanders, D. B.; Schulz, B.; Surace, J. A.

    2017-06-01

    In this paper we presented a Herschel SPIRE/FTS 194-671um spectroscopic survey of 121 galaxies belonging to a complete, flux-limited sample of 123 luminous infrared galaxies (LIRGs) down to a total IR flux of 6.5x10-13W/m2, selected from the Great Observatories All-Sky LIRG Survey (GOALS; Armus+ 2009PASP..121..559A). All 123 observed targets are listed in Table 1. (3 data files).

  9. Project UM-HAUL: A self-unloading reusable lunar lander

    NASA Technical Reports Server (NTRS)

    1991-01-01

    The establishment of a lunar base is technologically and financially challenging. Given the necessary resources and political support, it can be done. In addition to the geopolitical obstacles, however, there are logistical problems involved in establishing such bases that can only be overcome with the acquisition of a significant transportation and communications network in the Earth-Moon spatial region. Considering the significant number of payloads that will be required in this process, the mass-specific cost of launching these payloads, and the added risk and cost of human presence in space, it is clearly desirable to automate major parts of such an operation. One very costly and time-consuming factor in this picture is the delivery of payloads to the Moon. Foreseeable payloads would include atmospheric modules, inflatable habitat kits, energy and oxygen plant elements, ground vehicles, laboratory modules, crew supplies, etc. The duration of high-risk human presence on the Moon could be greatly reduced if all such payloads were delivered to the prospective base site in advance of crew arrival. In this view, the idea of a 'Self-Unloading Reusable Lunar Lander' (SURLL) arises naturally. The general scenario depicts the lander being brought to low lunar orbit (LLO) from Earth atop a generic Orbital Transfer Vehicle (OTV). From LLO, the lander shuttles payloads down to the lunar surface, where, by means of some resident, detachable unloading device, it deploys the payloads and returns to orbit. The general goal is for the system to perform with maximum payload capability, automation, and reliability, while also minimizing environmental hazards, servicing needs, and mission costs. Our response to this demand is UM-HAUL, or the UnManned Heavy pAyload Unloader and Lander. The complete study includes a system description, along with a preliminary cost analysis and a design status assessment.

  10. The response of chemistry and climate to the 11-year solar cycle in UM-UKCA

    NASA Astrophysics Data System (ADS)

    Bednarz, Ewa; Telford, Paul; Maycock, Amanda; Abraham, Luke; Braesicke, Peter; Pyle, John

    2014-05-01

    It is now generally agreed that the UV variability associated with the 11-year solar cycle leads to changes in ozone and temperature in the upper stratosphere. In addition, a range of observational and modelling studies suggest that such changes are the starting point for a chain of processes (including feedbacks) resulting in circulation changes in many areas of the atmosphere. However, precise details of the interactions between chemistry and meteorology induced by solar variability remain under question. In our study, we use a version of the UM-UKCA chemistry-climate model with consistent spectrally-resolved solar variability. While the solar cycle in heating rates has been applied with the method used in HadGEM2-ES, fine spectrally-resolved solar variability has been uniquely incorporated into the Fast-JX photolysis scheme. We perform two 50-year-long perpetual year solar maximum and solar minimum integrations and complement them with a three member ensemble of a transient 1960-2010 integration in which boundary conditions correspond by and large to the CCMI Ref-C1 scenario. We show how the inferred solar signals vary between the individual experiments. This indicates high natural variability and the resulting contamination of the solar signal with contributions from other processes as well as the existence of possible non-linearities between the solar cycle and other atmospheric forcings. Therefore, we highlight that long data series are needed to ensure correct attribution of the modelled and observed anomalies. In addition, we present results from two perpetual year experiments in which the solar cycle was applied exclusively in either short-wave heating or photolysis. We find large non-linearities in the modelled anomalies as compared to the realistic integration with both modulations included. This highlights the subtle nature of the dynamical response to the solar cycle forcing and indicates the need for interactive chemistry with a detailed photolysis

  11. OV-Wav: um novo pacote para análise multiescalar em astronomia

    NASA Astrophysics Data System (ADS)

    Pereira, D. N. E.; Rabaça, C. R.

    2003-08-01

    Wavelets e outras formas de análise multiescalar têm sido amplamente empregadas em diversas áreas do conhecimento, sendo reconhecidamente superiores a técnicas mais tradicionais, como as análises de Fourier e de Gabor, em certas aplicações. Embora a teoria dos wavelets tenha começado a ser elaborada há quase trinta anos, seu impacto no estudo de imagens astronômicas tem sido pequeno até bem recentemente. Apresentamos um conjunto de programas desenvolvidos ao longo dos últimos três anos no Observatório do Valongo/UFRJ que possibilitam aplicar essa poderosa ferramenta a problemas comuns em astronomia, como a remoção de ruído, a detecção hierárquica de fontes e a modelagem de objetos com perfis de brilho arbitrários em condições não ideais. Este pacote, desenvolvido para execução em plataforma IDL, teve sua primeira versão concluída recentemente e está sendo disponibilizado à comunidade científica de forma aberta. Mostramos também resultados de testes controlados ao quais submetemos os programas, com a sua aplicação a imagens artificiais, com resultados satisfatórios. Algumas aplicações astrofísicas foram estudadas com o uso do pacote, em caráter experimental, incluindo a análise da componente de luz difusa em grupos compactos de galáxias de Hickson e o estudo de subestruturas de nebulosas planetárias no espaço multiescalar.

  12. M17SW [OI] 63 um self-absorption and optical depth effects

    NASA Astrophysics Data System (ADS)

    Guevara, Cristian

    M17SW is a giant molecular cloud located at 1.98 kpc, and it is iluminated by a cluster of OB stars at 1 pc to the east. It is one of the best galactic regions to study PDR structure from the exciting source to ionization source. The structure is highly clumpy from several studies of molecular emission. Our recent observations with SOFIA/upGREAT at very high velocity resolution and S/N have shown for M17SW that the [CII] line has a really high opacity and is heavily affected by self-absorption. Under these conditions, line ratios of fine structure lines derived from line-integrated, spectrally unresolved observations, when blindly used to derive physical source properties such as UV-intensity and density, give questionable results. The self-absorption in [CII] shows up as several narrow absorption notches across the broader [CII] emission profile. Of particular interest is the question: what is the nature of the absorbing forground clouds. On relevant observation with SOFIA is to study the profile of the second brightest cooling line, [OI] 63 um, observable with the GREAT H-channel. If the foreground gas is subthermally excited and has low density, as is indicated by the [CII] profiles, [OI] should show similar self-absorption notches, as is in fact indicated in the relatively low S/N-ratio spectra that we already obtained when mapping the M17SW interface. We thus propose to use the high sensitivity and resolving power of SOFIA/GREAT for a systematic study of the [OI] with deep integrations of the fine structure line, by observing the seven positions previously studied in [CII] and [13CII].

  13. Genome Anatomy of Pyrenochaeta unguis-hominis UM 256, a Multidrug Resistant Strain Isolated from Skin Scraping.

    PubMed

    Toh, Yue Fen; Yew, Su Mei; Chan, Chai Ling; Na, Shiang Ling; Lee, Kok Wei; Hoh, Chee-Choong; Yee, Wai-Yan; Ng, Kee Peng; Kuan, Chee Sian

    2016-01-01

    Pyrenochaeta unguis-hominis is a rare human pathogen that causes infection in human skin and nail. P. unguis-hominis has received little attention, and thus, the basic biology and pathogenicity of this fungus is not fully understood. In this study, we performed in-depth analysis of the P. unguis-hominis UM 256 genome that was isolated from the skin scraping of a dermatitis patient. The isolate was identified to species level using a comprehensive multilocus phylogenetic analysis of the genus Pyrenochaeta. The assembled UM 256 genome has a size of 35.5 Mb and encodes 12,545 putative genes, and 0.34% of the assembled genome is predicted transposable elements. Its genomic features propose that the fungus is a heterothallic fungus that encodes a wide array of plant cell wall degrading enzymes, peptidases, and secondary metabolite biosynthetic enzymes. Antifungal drug resistance genes including MDR, CDR, and ERG11/CYP51 were identified in P. unguis-hominis UM 256, which may confer resistance to this fungus. The genome analysis of P. unguis-hominis provides an insight into molecular and genetic basis of the fungal lifestyles, understanding the unrevealed biology of antifungal resistance in this fungus.

  14. Genome Anatomy of Pyrenochaeta unguis-hominis UM 256, a Multidrug Resistant Strain Isolated from Skin Scraping

    PubMed Central

    Toh, Yue Fen; Yew, Su Mei; Chan, Chai Ling; Na, Shiang Ling; Lee, Kok Wei; Hoh, Chee-Choong; Yee, Wai-Yan; Ng, Kee Peng

    2016-01-01

    Pyrenochaeta unguis-hominis is a rare human pathogen that causes infection in human skin and nail. P. unguis-hominis has received little attention, and thus, the basic biology and pathogenicity of this fungus is not fully understood. In this study, we performed in-depth analysis of the P. unguis-hominis UM 256 genome that was isolated from the skin scraping of a dermatitis patient. The isolate was identified to species level using a comprehensive multilocus phylogenetic analysis of the genus Pyrenochaeta. The assembled UM 256 genome has a size of 35.5 Mb and encodes 12,545 putative genes, and 0.34% of the assembled genome is predicted transposable elements. Its genomic features propose that the fungus is a heterothallic fungus that encodes a wide array of plant cell wall degrading enzymes, peptidases, and secondary metabolite biosynthetic enzymes. Antifungal drug resistance genes including MDR, CDR, and ERG11/CYP51 were identified in P. unguis-hominis UM 256, which may confer resistance to this fungus. The genome analysis of P. unguis-hominis provides an insight into molecular and genetic basis of the fungal lifestyles, understanding the unrevealed biology of antifungal resistance in this fungus. PMID:27626635

  15. Design, fabrication and testing of 17um pitch 640x480 uncooled infrared focal plane array detector

    NASA Astrophysics Data System (ADS)

    Jiang, Lijun; Liu, Haitao; Chi, Jiguang; Qian, Liangshan; Pan, Feng; Liu, Xiang

    2015-10-01

    Uncooled infrared focal plane array (UIRFPA) detectors are widely used in industrial thermography cameras, night vision goggles, thermal weapon sights, as well as automotive night vision systems. To meet the market requirement for smaller pixel pitch and higher resolution, we have developed a 17um pitch 640x480 UIRFPA detector. The detector is based on amorphous silicon (a-Si) microbolometer technology, the readout integrated circuit (ROIC) is designed and manufactured with 0.35um standard CMOS technology on 8 inch wafer, the microbolometer is fabricated monolithically on the ROIC using an unique surface micromachining process developed inside the company, the fabricated detector is vacuum packaged with hermetic metal package and tested. In this paper we present the design, fabrication and testing of the 17um 640x480 detector. The design trade-off of the detector ROIC and pixel micro-bridge structure will be discussed, by comparison the calculation and simulation to the testing results. The novel surface micromachining process using silicon sacrificial layer will be presented, which is more compatible with the CMOS process than the traditional process with polyimide sacrificial layer, and resulted in good processing stability and high fabrication yield. The performance of the detector is tested, with temperature equivalent temperature difference (NETD) less than 60mK at F/1 aperture, operability better than 99.5%. The results demonstrate that the detector can meet the requirements of most thermography and night vision applications.

  16. The DecisionDx-UM Gene Expression Profile Test Provides Risk Stratification and Individualized Patient Care in Uveal Melanoma.

    PubMed

    Harbour, J William; Chen, Royce

    2013-04-09

    Uveal melanoma (UM) is the most common primary cancer of the eye and has a strong propensity for metastasis. Although there have been many recent improvements in the diagnosis and treatment of UM, and only 2-4% of patients present with detectable metastasis, up to half of patients are at risk for dying of metastatic disease. Clinicopathologic factors are not accurate enough for individualized patient care. Chromosomal alterations have been used for prognostic purposes, but the routine clinical use of these methods is limited by their susceptibility to sampling error resulting from tumor heterogeneity, limited clinical validation, lack of standardized testing platforms, and high technical failure rates. In contrast, the DecisionDx-UM gene expression profile test is a stand-alone platform which requires no other information for maximal prognostic accuracy and which circumvents many of the drawbacks of chromosomal methods through the use of a highly sensitive microfluidics, PCR-based platform that simultaneously measures the expression of 15 carefully selected genes from primary uveal melanoma samples obtained by fine needle biopsy. Low metastatic risk is reported as Class 1, and high metastatic risk as Class 2. The test allows patients to be stratified into risk categories such that high-risk patients can be offered intensive metastatic surveillance and adjuvant therapy while low-risk patients can be spared these interventions. This test is now used as part of the standard of care in many ocular oncology centers.

  17. UM-SCC-104: a new human papillomavirus-16 containing head and neck squamous cell carcinoma cell line

    PubMed Central

    Tang, Alice L.; Davis, Samantha J.; Owen, John H.; Graham, Martin P.; Czerwinski, Michael J.; Park, Jung Je; Walline, Heather; Stoerker, Jay; McHugh, Jonathan B.; Chepeha, Douglas; Bradford, Carol R.; Carey, Thomas E.; Prince, Mark E.

    2012-01-01

    BACKGROUND Few human papillomavirus (HPV)-positive head and neck squamous cell carcinoma (HNSCC) cell lines exist. We established UM-SCC-104, a new HPV(+) HNSCC cell linefrom a recurrent oral cavity tumor, and characterized it for the presence of cancer stem cells (CSC). METHODS Tumor cells were tested for biomarker expression by immunohistology and the presence of HPV was assessed by several methods. RESULTS UM-SCC-104 has a unique genotype, contains HPV-16 and expresses E6/E7. Inoculation of (Aldehyde Dehydrogenase) ALDH(+) and ALDH(−) cells in an immunocompromised mouse resulted in tumor growth from the ALDH(+) cells after 6 weeks that recapitulated the histology of the primary, while ALDH(−) cells did not produce tumors. CONCLUSIONS UM-SCC-104, a new HPV-16, CSC-containing HNSCC cell line will aid in studying recurrent HPV(+) tumors. The aggressive nature of this tumor is consistent with high uniform expression of EGFR and a functionally significant proportion of ALDH(+) CSC. PMID:22162267

  18. CaSO4 Scale Inhibition by a Trace Amount of Zinc Ion in Piping System

    NASA Astrophysics Data System (ADS)

    Mangestiyono, W.; Sutrisno

    2017-05-01

    Usually, a small steam generator is not complemented by equipment such as demineralization and chlorination process apparatus since the economic aspect was a precedence. Such phenomenon was uncovered in a case study of green tea industrial process in which the boiler capacity was not more than 1 ton/hour. The operation of the small boiler affected the scaling process in its piping system. In a year operation, there was already a large scale of calcium attached to the inner surface of the pipe. Such large scale formed a layer and decreased the overall heat transfer coefficient, prolonged the process time and decreased the production. The aim of the current research was to solve the problem through a laboratory research to inhibit the CaSO4 scale formation by the addition of trace amounts of zinc ion. This research was conducted through a built in-house experimental rig which consisted of a dosing pump for controlling the flow rate and a thermocouple to control the temperature. Synthesis solution was prepared with 3,500 ppm concentration of CaCl2 and Na2SO4. The concentration of zinc was set at 0.00; 5.00 and 10.00 ppm. The data found were characterized by scanning electron microscopy (SEM) to analyze crystal polymorph as the influence of zinc ion addition. The induction time was also investigated to analyze the nucleation time, and it was found on the 9th, 13th, and 19th minute of the zinc ion addition of 0.00, 5.00 and 10.00 ppm. After running for a four-hour duration, the scale grow-rate was found to be 5.799; 5.501 and 4.950 × 10-3 gr/min for 0.00; 5.00 and 10.00 ppm of zinc addition at 50 °C.

  19. User's manual (UM) for the enhanced logistics intratheater support tool (ELIST) database utility segment version 8.1.0.0 for solaris 7.

    SciTech Connect

    Dritz, K.

    2002-03-06

    This document is the User's Manual (UM) for the Enhanced Logistics Intratheater Support Tool (ELIST) Database Utility Segment. It tells how to use its features to administer ELIST database user accounts.

  20. Elucidation of the annealing process required in the preparation of the thermoluminescence phosphor of CaSO4:Tm

    NASA Astrophysics Data System (ADS)

    Shinsho, Kiyomitsu; Watanabe, Eiji; Urushiyama, Akio

    2006-11-01

    The thermoluminescence phosphor of CaSO4:Tm was subjected to physicochemical studies. Careful thermo mass spectrometry and thermogravimetry/differential thermal analysis studies for a solid sample prepared by 200°C evaporation of a sulfuric acid medium without annealing by an extremely slow speed of temperature elevation were carried out. The data revealed, along with an initial weight loss corresponding to a small, nonstoichiometric amount of crystal water at 200°C, evidence for reaction with H2O vapor in air between 300 and 500°C and a 550°C and a subsequent release of SOx at higher temperatures until the beginning of bursting decomposition of CaSO4 bulk above 700°C. H1 NMR study revealed a broad signal at 9.9ppm, which was easily assigned to the crystal water involved. This initial solid has no thermostimulated luminescence (TL) efficiency. The first signal at 9.9ppm disappeared at 200°C. A new signal appeared at 13.1ppm by annealing from 300°C and increased significantly in intensity during annealing up to 600°C, which could be assigned to the intermediate produced by the reaction with H2O vapor in air. The intensity of this signal in turn was reduced by annealing at temperatures higher than 600°C and almost disappeared at 800°C. The solid by annealing at 700°C has the best TL efficiency. Several lines of the present physicochemical evidence suggest that the energy trap on irradiation of ionizing radiation is related to the concentration of O2- produced by the decomposition of SO42- during the annealing process in the course of the preparation of CaSO4:RE.

  1. Luminescence properties of pure and doped CaSO4 nanorods irradiated by 15 MeV e-beam

    NASA Astrophysics Data System (ADS)

    Salah, Numan; Alharbi, Najlaa D.; Enani, Mohammad A.

    2014-01-01

    Calcium sulfate (CaSO4) doped with proper activators is a highly sensitive phosphor used in different fields mainly for radiation dosimetry, lighting and display applications. In this work pure and doped nanorods of CaSO4 were produced by the co-precipitation technique. Samples from this material doped with Ag, Cu, Dy, Eu and Tb were exposed to different doses of 15 MeV e-beam and studied for their thermoluminesence (TL) and photoluminescence (PL) properties. Color center formation leading to PL emissions were investigated before and after e-beam irradiation. The samples doped with rare earths elements (i.e. Dy, Eu and Tb) were observed to have thinner nanorods than the other samples and have higher absorption in the UV region. The Ag and Tb doped samples have poor TL response to e-beam, while those activated by Cu, Dy and Eu have strong glow peaks at around 123 °C. Quite linear response curves in the whole studied exposures i.e. 0.1-100 Gy were also observed in Cu and Dy doped samples. The PL results show that pure CaSO4 nanorods have active color centers without irradiation, which could be enriched/modified by these impurities mainly rare earths and further enhanced by e-beam irradiation. Eu3+ → Eu2+ conversion is clearly observed in Eu doped sample after e-beam irradiation. These results show that these nanorods might be useful in lighting and display devices development.

  2. NE VIII lambda 774 and time variable associated absorption in the QSO UM 675

    NASA Astrophysics Data System (ADS)

    Hamann, Fred; Barlow, Thomas A.; Beaver, E. A.; Burbidge, E. M.; Cohen, Ross D.; Junkkarinen, Vesa; Lyons, R.

    1995-04-01

    We discuss measurements of Ne VIII lambda 774 absorption and the time variability of other lines in the za approximately equal ze absorption system of the ze = 2.15 QSO UM 675 (0150-203). The C IV lambda 1549 and N V 1240 doublets at za = 2.1340 (shifted approximately 1500 km/s from ze strengthened by a factor of approximately 3 between observations by Sargent, Boksenberg and Steidel (1981 November) and our earliest measurements (1990 November and December). We have no information on changes in other za approximately equal ze absorption lines. Continued monitoring since 1990 November shows no clear changes in any of the absorptions between approximately 1100 and 1640 A rest. The short timescale of the variability (less than or approximately equal to 2.9 yr rest) strongly suggests that the clouds are dense, compact, close to the QSO, and photoionized by the QSO continuum. If the line variability is caused by changes in the ionization, the timescale requires densities greater than approximately 4000/cu cm. Photoionization calculations place the absorbing clouds within approximately 200 pc of the continuum source. The full range of line ionizations (from Ne VIII lambda 774 to C III lambda 977) in optically thin gas (no Lyman limit) implies that the absorbing regions span a factor of more than approximately 10 in distance or approximately 100 in density. Across these regions, the total hydrogen (H I + H II) column ranges from a few times 1018/sq cm in the low-ionization gas to approximately 1020/sq cm where the Ne VIII doublet forms. The metallicity is roughly solar or higher, with nitrogen possibly more enhanced by factors of a few. The clouds might contribute significant line emission if they nearly envelop the QSO. The presence of highly ionized Ne VIII lambda 774 absorption near the QSO supports recent studies that link za approximately equal to ze systems with X-ray 'wamr absorbers. We show that the Ne VIII absorbing gas would itself produce measurable warm

  3. BSSDATA - um programa otimizado para filtragem de dados em radioastronomia solar

    NASA Astrophysics Data System (ADS)

    Martinon, A. R. F.; Sawant, H. S.; Fernandes, F. C. R.; Stephany, S.; Preto, A. J.; Dobrowolski, K. M.

    2003-08-01

    A partir de 1998, entrou em operação regular no INPE, em São José dos Campos, o Brazilian Solar Spectroscope (BSS). O BSS é dedicado às observações de explosões solares decimétricas com alta resolução temporal e espectral, com a principal finalidade de investigar fenômenos associados com a liberação de energia dos "flares" solares. Entre os anos de 1999 e 2002, foram catalogadas, aproximadamente 340 explosões solares classificadas em 8 tipos distintos, de acordo com suas características morfológicas. Na análise detalhada de cada tipo, ou grupo, de explosões solares deve-se considerar a variação do fluxo do sol calmo ("background"), em função da freqüência e a variação temporal, além da complexidade das explosões e estruturas finas registradas superpostas ao fundo variável. Com o intuito de realizar tal análise foi desenvolvido o programa BSSData. Este programa, desenvolvido em linguagem C++, é constituído de várias ferramentas que auxiliam no tratamento e análise dos dados registrados pelo BSS. Neste trabalho iremos abordar as ferramentas referentes à filtragem do ruído de fundo. As rotinas do BSSData para filtragem de ruído foram testadas nos diversos grupos de explosões solares ("dots", "fibra", "lace", "patch", "spikes", "tipo III" e "zebra") alcançando um bom resultado na diminuição do ruído de fundo e obtendo, em conseqüência, dados onde o sinal torna-se mais homogêneo ressaltando as áreas onde existem explosões solares e tornando mais precisas as determinações dos parâmetros observacionais de cada explosão. Estes resultados serão apresentados e discutidos.

  4. NE VIII lambda 774 and time variable associated absorption in the QSO UM 675

    NASA Technical Reports Server (NTRS)

    Hamann, Fred; Barlow, Thomas A.; Beaver, E. A.; Burbidge, E. M.; Cohen, Ross D.; Junkkarinen, Vesa; Lyons, R.

    1995-01-01

    We discuss measurements of Ne VIII lambda 774 absorption and the time variability of other lines in the z(sub a) approximately equal z(sub e) absorption system of the z(sub e) = 2.15 QSO UM 675 (0150-203). The C IV lambda 1549 and N V 1240 doublets at z(sub a) = 2.1340 (shifted approximately 1500 km/s from z(sub e) strengthened by a factor of approximately 3 between observations by Sargent, Boksenberg and Steidel (1981 November) and our earliest measurements (1990 November and December). We have no information on changes in other z(sub a) approximately equal z(sub e) absorption lines. Continued monitoring since 1990 November shows no clear changes in any of the absorptions between approximately 1100 and 1640 A rest. The short timescale of the variability (less than or approximately equal to 2.9 yr rest) strongly suggests that the clouds are dense, compact, close to the QSO, and photoionized by the QSO continuum. If the line variability is caused by changes in the ionization, the timescale requires densities greater than approximately 4000/cu cm. Photoionization calculations place the absorbing clouds within approximately 200 pc of the continuum source. The full range of line ionizations (from Ne VIII lambda 774 to C III lambda 977) in optically thin gas (no Lyman limit) implies that the absorbing regions span a factor of more than approximately 10 in distance or approximately 100 in density. Across these regions, the total hydrogen (H I + H II) column ranges from a few times 10(exp 18)/sq cm in the low-ionization gas to approximately 10(exp 20)/sq cm where the Ne VIII doublet forms. The metallicity is roughly solar or higher, with nitrogen possibly more enhanced by factors of a few. The clouds might contribute significant line emission if they nearly envelop the QSO. The presence of highly ionized Ne VIII lambda 774 absorption near the QSO supports recent studies that link z(sub a) approximately equal to z(sub e) systems with X-ray 'wamr absorbers. We show that the

  5. Microwave window breakdown experiments and simulations on the UM/L-3 relativistic magnetron.

    PubMed

    Hoff, B W; Mardahl, P J; Gilgenbach, R M; Haworth, M D; French, D M; Lau, Y Y; Franzi, M

    2009-09-01

    Experiments have been performed on the UM/L-3 (6-vane, L-band) relativistic magnetron to test a new microwave window configuration designed to limit vacuum side breakdown. In the baseline case, acrylic microwave windows were mounted between three of the waveguide coupling cavities in the anode block vacuum housing and the output waveguides. Each of the six 3 cm deep coupling cavities is separated from its corresponding anode cavity by a 1.75 cm wide aperture. In the baseline case, vacuum side window breakdown was observed to initiate at single waveguide output powers close to 20 MW. In the new window configuration, three Air Force Research Laboratory-designed, vacuum-rated directional coupler waveguide segments were mounted between the coupling cavities and the microwave windows. The inclusion of the vacuum side power couplers moved the microwave windows an additional 30 cm away from the anode apertures. Additionally, the Lucite microwave windows were replaced with polycarbonate windows and the microwave window mounts were redesigned to better maintain waveguide continuity in the region around the microwave windows. No vacuum side window breakdown was observed in the new window configuration at single waveguide output powers of 120+MW (a factor of 3 increase in measured microwave pulse duration and factor of 3 increase in measured peak power over the baseline case). Simulations were performed to investigate likely causes for the window breakdown in the original configuration. Results from these simulations have shown that in the original configuration, at typical operating voltage and magnetic field ranges, electrons emitted from the anode block microwave apertures strike the windows with a mean kinetic energy of 33 keV with a standard deviation of 14 keV. Calculations performed using electron impact angle and energy data predict a first generation secondary electron yield of 65% of the primary electron population. The effects of the primary aperture electron

  6. Thermoluminescence of nanocrystalline CaSO4: Dy for gamma dosimetry and calculation of trapping parameters using deconvolution method

    NASA Astrophysics Data System (ADS)

    Mandlik, Nandkumar; Patil, B. J.; Bhoraskar, V. N.; Sahare, P. D.; Dhole, S. D.

    2014-04-01

    Nanorods of CaSO4: Dy having diameter 20 nm and length 200 nm have been synthesized by the chemical coprecipitation method. These samples were irradiated with gamma radiation for the dose varying from 0.1 Gy to 50 kGy and their TL characteristics have been studied. TL dose response shows a linear behavior up to 5 kGy and further saturates with increase in the dose. A Computerized Glow Curve Deconvolution (CGCD) program was used for the analysis of TL glow curves. Trapping parameters for various peaks have been calculated by using CGCD program.

  7. Hydration of calcium sulfate hemihydrate (CaSO 4· {1}/{2}H 2O) into gypsum (CaSO 4·2H 2O). The influence of the sodium poly(acrylate)/surface interaction and molecular weight

    NASA Astrophysics Data System (ADS)

    Boisvert, Jean-Philippe; Domenech, Marc; Foissy, Alain; Persello, Jacques; Mutin, Jean-Claude

    2000-12-01

    The retarding influence of sodium poly(acrylate) (PANa) on the hydration of calcium sulfate hemihydrate (CaSO 4· {1}/{2}H 2O) was investigated. This study reports the influence of sodium poly(acrylate) on hemihydrate dissolution, on homogenous and heterogeneous gypsum (CaSO 4·2H 2O) nucleation as well as on gypsum growth. It is shown that adsorption of PANa does not hinder the dissolution of hemihydrate in the present experimental conditions. The specific interaction of PANa with gypsum can explain the oriented growth of gypsum crystal. The gypsum growth is slowed down but cannot be blocked by the adsorption of PANa. On the other hand, PANa can block the heterogeneous and homogenous gypsum nucleation. As soon as a critical surface density of PANa onto the hemihydrate surface is reached, the heterogeneous gypsum nucleation is prevented and hemihydrate hydration is indefinitely blocked. The interaction between PANa and the hemihydrate surface is of prime importance to control hydration. Also, the influence of the molecular weight of PANa on homogenous nucleation has been investigated. The precipitation of calcium polyacrylate can explain the differences between the two molecular weights used (2100 and 20 000). This work leads to the conclusion that heterogeneous nucleation is the key process that controls hydration of a system in which hemihydrate dissolution, gypsum nucleation and growth are all occurring at the same time in a continuous manner.

  8. Sulforaphane retards the growth of UM-UC-3 xenographs, induces apoptosis, and reduces survivin in athymic mice.

    PubMed

    Wang, Fengqian; Shan, Yujuan

    2012-05-01

    Sulforaphane (SFN), an isothiocyanate that exists exclusively in cruciferous vegetables, may be the most promising preventive agent for bladder cancer (BC) to date. We previously observed that SFN dramatically inhibits human BC T24 cells in vitro. Our hypothesis is that SFN may attenuate BC growth. To test our hypothesis, we investigated the effect of SFN on human BC UM-UC-3 cell xenografts implanted into athymic mice. Sulforaphane extract was routinely prepared in our laboratory, and its content was measured with high-performance liquid chromatography. Athymic mice were injected subcutaneously with a UM-UC-3 cell suspension (2.0×10(6) cells/200 μL per mouse) and randomly divided into 2 groups. The positive control group was orally gavaged with water, and the treatment group was orally administered SFN from broccoli sprout (12 mg/kg body weight) for 5 weeks. At the end of the experiment, tumor tissues were harvested and processed for hematoxylin and eosin staining and immunohistochemistry. The average tumor volume decreased from 4.1±1.67 cm(3) in the positive control mice to 1.5±0.72 cm(3) in the SFN-treated mice, evidencing an inhibitory rate of 63%. The SFN extract also reduced the appearance of tumors, including karyopyknosis and angiogenesis. Sulforaphane extract induced caspase 3 and cytochrome c expression but reduced the expression of survivin. Sulforaphane extract retards the growth of UM-UC-3 xenografts in vivo, confirming its future potential in BC therapy.

  9. Community structure and activity of a highly dynamic and nutrient-limited hypersaline microbial mat in Um Alhool Sabkha, Qatar.

    PubMed

    Al-Thani, Roda; Al-Najjar, Mohammad A A; Al-Raei, Abdul Munem; Ferdelman, Tim; Thang, Nguyen M; Al Shaikh, Ismail; Al-Ansi, Mehsin; de Beer, Dirk

    2014-01-01

    The Um Alhool area in Qatar is a dynamic evaporative ecosystem that receives seawater from below as it is surrounded by sand dunes. We investigated the chemical composition, the microbial activity and biodiversity of the four main layers (L1-L4) in the photosynthetic mats. Chlorophyll a (Chl a) concentration and distribution (measured by HPLC and hyperspectral imaging, respectively), the phycocyanin distribution (scanned with hyperspectral imaging), oxygenic photosynthesis (determined by microsensor), and the abundance of photosynthetic microorganisms (from 16S and 18S rRNA sequencing) decreased with depth in the euphotic layer (L1). Incident irradiance exponentially attenuated in the same zone reaching 1% at 1.7-mm depth. Proteobacteria dominated all layers of the mat (24%-42% of the identified bacteria). Anoxygenic photosynthetic bacteria (dominated by Chloroflexus) were most abundant in the third red layer of the mat (L3), evidenced by the spectral signature of Bacteriochlorophyll as well as by sequencing. The deep, black layer (L4) was dominated by sulfate reducing bacteria belonging to the Deltaproteobacteria, which were responsible for high sulfate reduction rates (measured using 35S tracer). Members of Halobacteria were the dominant Archaea in all layers of the mat (92%-97%), whereas Nematodes were the main Eukaryotes (up to 87%). Primary productivity rates of Um Alhool mat were similar to those of other hypersaline microbial mats. However, sulfate reduction rates were relatively low, indicating that oxygenic respiration contributes more to organic material degradation than sulfate reduction, because of bioturbation. Although Um Alhool hypersaline mat is a nutrient-limited ecosystem, it is interestingly dynamic and phylogenetically highly diverse. All its components work in a highly efficient and synchronized way to compensate for the lack of nutrient supply provided during regular inundation periods.

  10. Um enfoque antropológico para o ensino de astronomia no nível médio

    NASA Astrophysics Data System (ADS)

    Costa, G. B.; Jafelice, L. C.

    2003-08-01

    Há uma enorme carência de materiais didático-pedagógicos em astronomia para professores do ensino médio, sobretudo materiais que explorem também aspectos humanísticos. A origem do Universo é um bom exemplo desta constatação central. Embora tal origem teve explicações culturais diversas, os professores não têm informações sobre isso e muito menos material que trabalhe diferentes visões de mundo e treinamento que os capacite a abordá-las devidamente. Conseqüentemente o ensino de astronomia costuma ser tecnicista e dissociado do aspecto humano que alimenta o grande interesse e curiosidade que esses temas despertam. Aqui apresentamos propostas visando contribuir para reverter esse quadro e trabalhamos distintas visões de Universo: espontâneas, autóctones e científicas. Desenvolvemos práticas, materiais instrucionais e textos para viabilizar a adoção de um enfoque antropológico para o ensino de astronomia no nível médio, no qual as culturas humanística e científica sejam integradas de uma maneira contextualizada e eficaz para aquele ensino. Estas propostas foram aplicadas em um curso de treinamento para professores da rede pública de diferentes disciplinas. A receptividade dos professores à abordagem proposta e os resultados alcançados foram muito estimulantes. Destes, destacamos: produção de roteiros de atividades; desenvolvimento de práticas didático-pedagógicas específicas (e.g., encenação de mitos; dança primordial guarani; "criação" de constelações e interpretações pluriculturais; etc.); e sugestões concretas para a efetiva realização de um ensino interdisciplinar contextualizado, onde questões cosmogônicas servem de mote para iniciar tal ensino. Discutimos estes resultados e como o enfoque adotado pode instrumentalizar os professores para leituras de mundo que incluem naturalmente aspectos culturais, sociais e históricos associados aos temas estudados. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temáticos/FAPESP)

  11. The U. S. Geological Survey, Digital Spectral Library: Version 1 (0.2 to 3.0um)

    USGS Publications Warehouse

    Clark, Roger N.; Swayze, Gregg A.; Gallagher, Andrea J.; King, Trude V.V.; Calvin, Wendy M.

    1993-01-01

    We have developed a digital reflectance spectral library, with management and spectral analysis software. The library includes 498 spectra of 444 samples (some samples include a series of grain sizes) measured from approximately 0.2 to 3.0 um . The spectral resolution (Full Width Half Maximum) of the reflectance data is <= 4 nm in the visible (0.2-0.8 um) and <= 10 nm in the NIR (0.8-2.35 um). All spectra were corrected to absolute reflectance using an NIST Halon standard. Library management software lets users search on parameters (e.g. chemical formulae, chemical analyses, purity of samples, mineral groups, etc.) as well as spectral features. Minerals from borate, carbonate, chloride, element, halide, hydroxide, nitrate, oxide, phosphate, sulfate, sulfide, sulfosalt, and the silicate (cyclosilicate, inosilicate, nesosilicate, phyllosilicate, sorosilicate, and tectosilicate) classes are represented. X-Ray and chemical analyses are tabulated for many of the entries, and all samples have been evaluated for spectral purity. The library also contains end and intermediate members for the olivine, garnet, scapolite, montmorillonite, muscovite, jarosite, and alunite solid-solution series. We have included representative spectra of H2O ice, kerogen, ammonium-bearing minerals, rare-earth oxides, desert varnish coatings, kaolinite crystallinity series, kaolinite-smectite series, zeolite series, and an extensive evaporite series. Because of the importance of vegetation to climate-change studies we have include 17 spectra of tree leaves, bushes, and grasses. The library and software are available as a series of U.S.G.S. Open File reports. PC user software is available to convert the binary data to ascii files (a separate U.S.G.S. open file report). Additionally, a binary data files are on line at the U.S.G.S. in Denver for anonymous ftp to users on the Internet. The library search software enables a user to search on documentation parameters as well as spectral features. The

  12. Soluble minerals in chemical evolution. I - Adsorption of 5-prime-AMP on CaSO4 - A model system

    NASA Technical Reports Server (NTRS)

    Orenberg, J. B.; Chan, S.; Calderon, J.; Lahav, N.

    1985-01-01

    The adsorption of 5-prime-AMP onto solid CaSO4-2H2O was studied in a saturated suspension as a function of pH and electrolyte concentration. The adsorption is pH-dependent and is directly correlated with the charge on the 5-prime-AMP molecule which is determined by the state of protonation of the N-1 nitrogen of the purine ring and the phosphate oxygens. It is proposed that the binding that occurs between the nucleotide and the salt is electrostatic in nature. The adsorption decreases with increasing ionic strength of the solution which means that in a fluctuating environment of wetting and drying cycles, a biomolecule similar to 5-prime-AMP could be expected to desorb during the drying phase. The results indicate that CaSO4-2H2O can serve as a concentrating surface for biomolecules. The significance of this is discussed with regard to the possible role of soluble minerals and their surfaces in a geochemical model consistent with the evolution of the earth and the origin of life.

  13. [Malattia di Marchiafava-Bignami con coinvolgimento della corteccia frontale e insorgenza tardiva di sintomi psichiatrici resistenti: un caso clinico].

    PubMed

    Gramaglia, Carla; Feggi, Alessandro; Vecchi, Camilla; Di Marco, Sarah; Venesia, Alessandra; Delicato, Claudia; Chieppa, Nunzia; De Marchi, Fabiola; Cantello, Roberto; Zeppegno, Patrizia

    2016-01-01

    RIASSUNTO. Scopo. Descrivere il management di un paziente con malattia di Marchiafava-Bignami (MBD) associata a lesioni frontali corticali, senza sintomi specifici al primo accesso in Pronto Soccorso, e insorgenza tardiva di sintomi psichiatrici atipici. Metodi. Descriviamo il caso di un paziente di 44 anni con storia di abuso cronico di alcol, a cui è stata diagnosticata la MBD. Risultati. La risonanza magnetica ha evidenziato lesioni nello splenio e corpo del corpo calloso e lesioni bilaterali della corteccia frontale. Il paziente ha sviluppato sintomi psichiatrici atipici a insorgenza tardiva, che sono risultati essere resistenti alle terapie farmacologiche impostate. Discussione. Il caso che descriviamo sembra supportare le attuali, ma ancora scarse evidenze che descrivono il coinvolgimento corticale nella MBD, suggerendone l'associazione con una prognosi peggiore. I sintomi psichiatrici possono risultare difficili da trattare a causa della resistenza alle terapie. Conclusione. Il coinvolgimento di psichiatri, radiologi e neurologi secondo un approccio di consultazione-liaison si è dimostrato di fondamentale importanza per la diagnosi e l'impostazione della terapia adeguata al paziente.

  14. ON THE COMPACT H II GALAXY UM 408 AS SEEN BY GMOS-IFU: PHYSICAL CONDITIONS

    SciTech Connect

    Lagos, Patricio; Telles, Eduardo; Munoz-Tunon, Casiana; Tenorio-Tagle, Guillermo E-mail: etelles@on.br E-mail: rcarrasco@gemini.edu E-mail: gtt@inaoep.mx

    2009-06-15

    We present Integral Field Unit GMOS-IFU data of the compact H II galaxy UM 408, obtained at the Gemini South telescope, in order to derive the spatial distribution of emission lines and line ratios, kinematics, plasma parameters, and oxygen abundances as well the integrated properties over an area of 3''x4.''4 equivalent with {approx}750 pc x 1100 pc located in the central part of the galaxy. The starburst in this area is resolved into two giant regions of about 1.''5 and 1'' ({approx}375 and {approx}250 pc) diameter, respectively and separated 1.5-2'' ({approx}500 pc). The extinction distribution concentrate its highest values close but not coincident with the maxima of H{alpha} emission around each one of the detected regions. This indicates that the dust has been displaced from the exciting clusters by the action of their stellar winds. The ages of these two regions, estimated using H{beta} equivalent widths, suggest that they are coeval events of {approx}5 Myr with stellar masses of {approx}10{sup 4} M {sub sun}. We have also used [O III]/H{beta} and [S II]/H{alpha} ratio maps to explore the excitation mechanisms in this galaxy. Comparing the data points with theoretical diagnostic models, we found that all of them are consistent with excitation by photoionization by massive stars. The H{alpha} emission line was used to measure the radial velocity and velocity dispersion. The heliocentric radial velocity shows an apparent systemic motion where the east part of the galaxy is blueshifted, while the west part is redshifted, with a relative motion of {approx}10 km s{sup -1}. The velocity dispersion map shows supersonic values typical for extragalactic H II regions. We derived an integrated oxygen abundance of 12+log(O/H) = 7.87 summing over all spaxels in our field of view. An average value of 12+log(O/H) = 7.77 and a difference of {delta}(O/H) = 0.47 between the minimum and maximum values (7.58 {+-} 0.06-8.05 {+-} 0.04) were found, considering all data points

  15. VizieR Online Data Catalog: HI and 250um images of the Virgo cirrus (Bianchi+, 2017)

    NASA Astrophysics Data System (ADS)

    Bianchi, S.; Giovanardi, C.; Smith, M. W. L.; Fritz, J.; Davies, J. I.; Haynes, M. P.; Giovanelli, R.; Baes, M.; Bocchio, M.; Boissier, S.; Boquien, M.; Boselli, A.; Casasola, V.; Clark, C. J. R.; de Looze, I.; di Serego Alighieri, S.; Grossi, M.; Jones, A. P.; Hughes, T. M.; Hunt, L. K.; Madden, S.; Magrini, L.; Pappalardo, C.; Ysard, N.; Zibetti, S.

    2016-10-01

    Images of the Virgo cirrus in the atomic gas HI emission and in the dust emission at 250um from Herschel-SPIRE. Two images are provided for HI emission from low velocity (LVC; -20km/sum: the observations, with large scale offsets removed; the model, obtained from the emissivity values derived in the paper and the two atomic gas maps; the residuals between observations and models. The three images have been obtained from observations/model/residuals for each of the four HeViCS fields, and combined in a single large scale map after removing field-to-field offsets; they are the same presented in Fig. 8 of the paper. In all cases the resolution is 4.8'. (2 data files).

  16. Um satélite brasileiro para observação do diâmetro solar

    NASA Astrophysics Data System (ADS)

    Emilio, M.; Leister, N. V.; Benevides Soares, P.; Teixeira, R.; Kuhn, J.

    2003-08-01

    Propomos uma missão espacial para medir a forma e o diâmetro solar com o objetivo de ajudar a determinar o potencial gravitacional do Sol e a sua rotação com precisão, testar modelos teóricos de variação de energia e pela primeira vez medir os modos g de oscilação. As observações serão obtidas através do instrumento denominado APT (Astrometric and Photometric Telescope) descrito por Kuhn(1983). A sensibilidade do instrumento é de 0,2 mas em 27 dias para as observações do diâmetro solar feitas a cada minuto. Esta é uma missão de três anos de duração e pode complementar as medidas que serão feitas pelo satélite PICARD (a ser lançado em 2007). Outros parâmetros físicos podem ser obtidos com as mesmas imagens o que certamente interessará à comunidade de física solar. Um primeiro contato foi realizado com a agência espacial brasileira que pretende lançar um satélite científico a cada dois anos.

  17. Tão perto de casa, tão longe de nós: etnografia das novas margens no centro da urbe

    PubMed Central

    Fernandes, Por Luís

    2011-01-01

    Philippe Bourgois é, desde 2007, “Richard Perry University professor” no Departamento de Antropologia e de Medicina Familiar e de Práticas Comunitárias na Universidade da Pensilvânia. Esteve durante largos anos ligado ao Departamento de Antropologia, História e Medicina Social da Universidade da Califórnia, São Francisco. A publicação, em 1995, de In Search of Respect: Selling Crack in El Barrio1 projectaria o seu nome muito para além dos Estados Unidos: uma etnografia no coração porto-riquenho do Harlem, em torno dos actores e dos ambientes da venda de crack. Seguir-se-ia um longo trabalho de terreno em acampamentos de dependentes de heroína em São Francisco, orientando o seu trabalho para as formas mais radicais da pobreza e da marginalidade nos EUA. É deste trabalho de terreno que sai o seu último livro, Righteous Dopefiend2. Em Junho de 2007 esteve em Lisboa para participar na 3.a edição do “Ethnografeast”. Foi então que aproveitámos a oportunidade para ouvir um percurso invulgar contado pelo próprio: uma longa conversa no Hotel Zurique, cujo nome só vem ao caso por evocar o país onde passou uma parte da infância. PMID:22013286

  18. Solubility of Anhydrite (CaSO4) in NaCl-H2O Fluids at High T and P

    NASA Astrophysics Data System (ADS)

    Newton, R. C.; Manning, C. E.

    2003-12-01

    Weight losses of single crystals of a very pure natural anhydrite exposed to NaCl solutions of 0-0.3 mol fraction were measured at 600-800 \\deg C and 6-14 kbar. Experimental charges were contained in welded Pt capsules in 1.91 cm-diameter piston-cylinder apparatus with NaCl pressure medium for 5-72 hr. Measurements in initially pure H2O were made with HM, NNO, and MnO2 buffers, as well as without buffering. At 800 \\deg C and 10 kbar, CaSO4 molalities are: MnO2, 0.014 mol/kg H2O; HM, 0.017; NNO, 0.148; and unbuffered, 0.026. Variation in oxygen fugacity thus has a large effect on CaSO4 solubility, increasing with H2S/SO2 in the fluid. Unbuffered (self-buffered) charges gave solubilities much closer to HM than NNO. Melting occurred in the NNO experiment at this P and T. NaCl increases CaSO4 solubility enormously, with m(CaSO4) reaching 5.4, or 23.5 wt. %, at 800 \\deg C, 10 kbar and X(NaCl)=0.3. There is also a very large increase with temperature. Regression of all the data give: log(m-mo) = -1.533 + 0.00291T + (1.441 + 0.00016T)logX(NaCl) + 0.0413(P-10) where mo is molality in pure H2O, P is in kbar, and T is in Kelvins. The very large carrying capacity for sulfate in even mildly saline fluids at high P and T, together with the high oxygen potential generated when these solutions react with FeO in rocks to yield pyrrhotite, indicates that such fluids should be considered as principal agents in S-rich, highly oxidizing processes such as Pinatubo-type volcanic eruptions, certain deep-crustal granulite facies metamorphism, as in Bamble, Norway and Shevaroy Hills, S. India, and the anhydrite-related, oxidized Au ore deposits like Abitibi, Ontario, and Kalgoorlie, Australia.

  19. Pneumatocele selar a tensión: Reporte de un caso y revisión de la literatura

    PubMed Central

    Campero, Álvaro; Ajler, Pablo; Goldschmidt, Ezequiel; Bendersky, Damián; Campero, Abraham

    2012-01-01

    Introducción: El neumoencéfalo a tensión luego de la cirugía transesfenoidal es poco común. En la literatura existen pocos casos reportados en los cuales el aire se encuentra localizado exclusivamente en las regiones selar y supraselar, constituyendo un pneumatocele selar. En este artículo se describe un caso inusual de pneumatocele selar a tensión de presentación tardía. Descripción del caso: Una mujer de 57 años consultó por hemianopsia bitemporal. Previamente, ya se le había realizado una cirugía transnasal por un adenoma hipofisario y se le había colocado una derivación lumbo-peritoneal por la presencia de una fístula de líquido cefalorraquídeo. Además, se le había realizado una resección transcraneal de un componente intracavernoso del tumor y radiocirugía debido a la agresividad del mismo. Se llevó a cabo una resonancia magnética que demostró un pneumatocele selar y supraselar. Intervención: Se realizó un abordaje transciliar. La región selar estaba encapsulada por tejido cicatrizal debido a los procedimientos previos. Se abrió la cicatriz y el aire fue evacuado. Posteriormente, el piso selar fue cerrado con grasa y cola de fibrina. Despuós del procedimiento, su campo visual retornó a la normalidad. Un año después de su última cirugía, continua asintomática. Conclusión: El pneumatocele selar y supraselar a tensión es un hallazgo extremadamente raro luego de una cirugía transesfenoidal. Su manifestaciónw clínica sería la alteración visual debida a la compresión inferior de la vía óptica. El pneumatocele selar a tensión debe ser evacuado en un corto plazo. PMID:23596554

  20. Um estudo espectrofotométrico da variável cataclísmica V3885 Sgr

    NASA Astrophysics Data System (ADS)

    Ribeiro, F. M. A.; Diaz, M. P.

    2003-08-01

    Variáveis Cataclísmicas são sistemas binários cerrados compostos de uma anã vermelha que transfere matéria para uma anã branca, em sistemas não magnéticos ocorre a formação de um disco de acresção em torno da anã branca. V3885 Sgr é uma variável cataclísmica classificada como sendo do tipo nova-like. É apresentado um estudo espectrofotométrico de V3885 Sgr de alta resolução temporal feito na região do visível. A região observada é centrada em Ha e abrange também a linha de HeI 6678. O primeiro resultado obtido neste estudo é a determinação do período orbital a partir de medidas da velocidade radial da linha de Ha como sendo 0,20716071(22) dias, resolvendo inconsistências quanto a esse valor na literatura e definindo uma efeméride a longo prazo para o sistema. Com este período e as medidas de velocidade radial do perfil de linha de Ha foi construído um diagrama de massas, através do qual restringimos as massas das componentes estelares do sistema e limitamos a inclinação orbital do sistema. Foram construídos diagramas de Greenstein para as linhas de Ha e HeI, onde os espectros médios em cada intervalo de fase são representados lado a lado em escala de cinza, indicando a existência de uma emissão intensa proveniente da parte posterior do disco. A partir da tomografia Doppler obtivemos perfis de emissividade radial para o disco tanto para a linha de Ha como para HeI. Os resultados obtidos são comparados com os de outros sistemas estudados com a mesma técnica. Serão apresentados também resultados da tomografia de flickering para o sistema.

  1. Mental health problems of undocumented migrants (UMs) in The Netherlands: a qualitative exploration of help-seeking behaviour and experiences with primary care.

    PubMed

    Teunissen, Erik; Sherally, Jamilah; van den Muijsenbergh, Maria; Dowrick, Chris; van Weel-Baumgarten, Evelyn; van Weel, Chris

    2014-11-21

    To explore health-seeking behaviour and experiences of undocumented migrants (UMs) in general practice in relation to mental health problems. Qualitative study using semistructured interviews and thematic analysis. 15 UMs in The Netherlands, varying in age, gender, country of origin and education; inclusion until theoretical saturation was reached. 4 cities in The Netherlands. UMs consider mental health problems to be directly related to their precarious living conditions. For support, they refer to friends and religion first, the general practitioner (GP) is their last resort. Barriers for seeking help include taboo on mental health problems, lack of knowledge of and trust in GPs competencies regarding mental health and general barriers in accessing healthcare as an UM (lack of knowledge of the right to access healthcare, fear of prosecution, financial constraints and practical difficulties). Once access has been gained, satisfaction with care is high. This is primarily due to the attitude of the GPs and the effectiveness of the treatment. Reasons for dissatisfaction with GP care are an experienced lack of time, lack of personal attention and absence of physical examination. Expectations of the GP vary, medication for mental health problems is not necessarily seen as a good practice. UMs often see their precarious living conditions as an important determinant of their mental health; they do not easily seek help for mental health problems and various barriers hamper access to healthcare for them. Rather than for medication, UMs are looking for encouragement and support from their GP. We recommend that barriers experienced in seeking professional care are tackled at an institutional level as well as at the level of GP. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  2. Mental health problems of undocumented migrants (UMs) in the Netherlands: a qualitative exploration of help-seeking behaviour and experiences with primary care

    PubMed Central

    Teunissen, Erik; Sherally, Jamilah; van den Muijsenbergh, Maria; Dowrick, Chris; van Weel-Baumgarten, Evelyn; van Weel, Chris

    2014-01-01

    Objective To explore health-seeking behaviour and experiences of undocumented migrants (UMs) in general practice in relation to mental health problems. Design Qualitative study using semistructured interviews and thematic analysis. Participants 15 UMs in the Netherlands, varying in age, gender, country of origin and education; inclusion until theoretical saturation was reached. Setting 4 cities in the Netherlands. Results UMs consider mental health problems to be directly related to their precarious living conditions. For support, they refer to friends and religion first, the general practitioner (GP) is their last resort. Barriers for seeking help include taboo on mental health problems, lack of knowledge of and trust in GPs competencies regarding mental health and general barriers in accessing healthcare as an UM (lack of knowledge of the right to access healthcare, fear of prosecution, financial constraints and practical difficulties). Once access has been gained, satisfaction with care is high. This is primarily due to the attitude of the GPs and the effectiveness of the treatment. Reasons for dissatisfaction with GP care are an experienced lack of time, lack of personal attention and absence of physical examination. Expectations of the GP vary, medication for mental health problems is not necessarily seen as a good practice. Conclusions UMs often see their precarious living conditions as an important determinant of their mental health; they do not easily seek help for mental health problems and various barriers hamper access to healthcare for them. Rather than for medication, UMs are looking for encouragement and support from their GP. We recommend that barriers experienced in seeking professional care are tackled at an institutional level as well as at the level of GP. PMID:25416057

  3. Das Märchen vom Zauberer im weißen Kittel: Mythen um berühmte Experimente und Experimentatoren

    NASA Astrophysics Data System (ADS)

    Hentschel, Klaus

    2003-09-01

    Um berühmte Experimentatoren und Experimente ranken sich ebenso Mythen wie um geniale Theoretiker. Sie sind in populärwissenschaftlichen Büchern, Lehrbüchern und sogar in wissenschaftshistorischen Texten verbreitet. Die durch die Aufklärung etablierte Kultur des eleganten Schauexperiments vermittelt ein schiefes Bild vom mühsamen Weg vieler Experimentatoren zum dargestellten Ergebnis. Auch der Mythos des einsamen, genialen Experimentators ohne Helfer widerspricht dem historischen Befund. Gleiches gilt für das experimentum crucis, das eine Theorie als entscheidendes Experiment belegen soll. Die historische Forschung zeigt, dass es eine lange, eigenständige Tradition der experimentellen und instrumentellen Arbeit gibt.

  4. The challenge and scientific application of the CO2 4.3 um atmospheric limb emission of Mars

    NASA Astrophysics Data System (ADS)

    Lopez-Valverde, M. A.; Piccialli, A.; Giuranna, M.; Funke, B.; López-Puertas, M.; Jurado-Navarro, A. A.; García-Comas, M.; González-Galindo, F.; López-Moreno, J. J.; Jiménez-Monferrer, S.

    2015-10-01

    The atmospheric fluorescent emissions of CO2 at 4.3- um have been observed in the daytime upper atmosphere of Mars from a limb geometry by the instruments OMEGA and PFS on board Mars Express [1, 8]. Initial analysis using non-local thermodynamic equilibrium (NLTE) models show that the emissions are well understood [7, 3, 6]. Yet they have not been exploited to derive important thermospheric parameters, like CO2 densities and temperatures. Our major goals are to improve current NLTE models with a joint study of OMEGA and PFS data, and to build an ambitious state-of-the-art NLTE retreival scheme for Mars. Recent progress has been made in these directions on Mars, Venus and Earth. We will present a summary of these efforts and the difficulties and expectatives for its application to the Mars Express data

  5. Attitudes of Psychiatric Nurses about the Request for Euthanasia on the Basis of Unbearable Mental Suffering(UMS)

    PubMed Central

    Wampers, Martien; De Lepeleire, Jan; Correll, Christophe U.

    2015-01-01

    Introduction When psychiatric patients express a wish for euthanasia, this should first and foremost be interpreted as a cry for help. Due to their close day-to-day relationship, psychiatric nurses may play an important and central role in responding to such requests. However, little is known about nurses’ attitudes towards euthanasia motivated by unbearable mental suffering. Objectives The aim of this study was to provide insight into the attitudes and actions taken by psychiatric nurses when confronted with a patient’s euthanasia request based on unbearable mental suffering (UMS). Method A questionnaire was sent to 11 psychiatric hospitals in the Flemish part of Belgium. Results The overall response rate was 70% (N = 627). Psychiatric nurses were frequently confronted with a request for euthanasia, either directly (N = 329, 53%) or through a colleague (N = 427, 69%). A majority (N = 536, 84%) did not object to euthanasia in a psychiatrically ill population with UMS. Confounding factors were the psychiatric diagnosis and the type of ward where the nurses were working. Most participants acknowledged a lack of knowledge and skills to adequately address the euthanasia request (N = 434, 71%). Nearly unanimously (N = 618, 99%), study participants indicated that dealing with euthanasia requests and other end-of-life issues should be part of the formal training of nurses. Conclusion The results highlight the need for ethically sound and comprehensive provision of care. Psychiatric nurses play an important role in dealing with the complex issue of requests for euthanasia. There is also a need for education, training and clear guidelines on the level of health care organizations. PMID:26700007

  6. Spattering activity at Halemáumáu in 2015 and the transition between Hawaiian and Strombolian eruptions

    NASA Astrophysics Data System (ADS)

    Mintz, B. G.; Houghton, B. F.; Orr, T. R.; Taddeucci, J.; Gaudin, D.; Kueppers, U.; Carey, R.; Scarlato, P.; Del Bello, E.

    2016-12-01

    Explosive activity in 2015 at the free surface of the Halemáumáu lava lake at Kīlauea showed features of both Hawaiian fountaining and Strombolian explosivity. Like low Hawaiian fountains, spattering events often persisted for tens of minutes or hours. However, like Strombolian explosions, the activity consisted of a series of bursting of discrete, meter-sized gas bubbles. Each bubble burst threw fluidal bombs, with meter to decimeter diameters, to elevations of meters to a few tens of meters above the collapsing bubble remnant. Initial velocities of the pyroclasts were lower than either Strombolian explosions or high Hawaiian fountains, typically only 7 to 14 meters/second on average.Although some events were triggered by short-lived rock falls that penetrated the crust of the lava lake, the resulting outgassing activity would become self-sustaining and persistent. Activity was at times, confined to a single point source, to several point sources, or along arcs extending tens of meters parallel to the lake margin.This activity represents another type of behavior exhibited by basaltic volcanoes and provides greater insight into the spectrum between Hawaiian fountaining and Strombolian explosivity. Consequently, this activity is highly instructive in terms of: (a) the diversity of degassing/outgassing possible at basaltic volcanoes and (b) the controls on mechanically coupled versus decoupled behavior of the exsolved bubbles. The 2015 Halemáumáu activity was often continuous over similar timescales to Hawaiian fountaining but was markedly less steady than high fountains. A significant portion of the gas phase was released as discrete bubble bursts, but with frequencies two or three orders of magnitude higher than at Stromboli, which permitted sustained but not steady events.

  7. Attitudes of Psychiatric Nurses about the Request for Euthanasia on the Basis of Unbearable Mental Suffering(UMS).

    PubMed

    De Hert, Marc; Van Bos, Liesbet; Sweers, Kim; Wampers, Martien; De Lepeleire, Jan; Correll, Christophe U

    2015-01-01

    When psychiatric patients express a wish for euthanasia, this should first and foremost be interpreted as a cry for help. Due to their close day-to-day relationship, psychiatric nurses may play an important and central role in responding to such requests. However, little is known about nurses' attitudes towards euthanasia motivated by unbearable mental suffering. The aim of this study was to provide insight into the attitudes and actions taken by psychiatric nurses when confronted with a patient's euthanasia request based on unbearable mental suffering (UMS). A questionnaire was sent to 11 psychiatric hospitals in the Flemish part of Belgium. The overall response rate was 70% (N = 627). Psychiatric nurses were frequently confronted with a request for euthanasia, either directly (N = 329, 53%) or through a colleague (N = 427, 69%). A majority (N = 536, 84%) did not object to euthanasia in a psychiatrically ill population with UMS. Confounding factors were the psychiatric diagnosis and the type of ward where the nurses were working. Most participants acknowledged a lack of knowledge and skills to adequately address the euthanasia request (N = 434, 71%). Nearly unanimously (N = 618, 99%), study participants indicated that dealing with euthanasia requests and other end-of-life issues should be part of the formal training of nurses. The results highlight the need for ethically sound and comprehensive provision of care. Psychiatric nurses play an important role in dealing with the complex issue of requests for euthanasia. There is also a need for education, training and clear guidelines on the level of health care organizations.

  8. Integration of geophysical and geological data for delimitation of mineralized zones in Um Naggat area, Central Eastern Desert, Egypt

    NASA Astrophysics Data System (ADS)

    Gaafar, Ibrahim

    2015-06-01

    An integrated approach for geophysical, geological and mineralogical data was followed for Um Naggat area, Central Eastern Desert, Egypt, in order to delineate its mineralized zones. The albitized granites are well-defined on the Th- and U-channel images, by their anomalous shapes, reaching 150 ppm and 90 ppm respectively, beside low K content. Interpretations of the aeromagnetic maps delineated four regional structural trends oriented due NNW, NW, ENE and E-W directions. They are identified as strike-slip faults, which coincide well with field observations, where NW-trending faults cut and displace right laterally ENE-trending older ones. The interaction between these two strike-slip fault systems confining the albite granite is easily identified on the regional data presenting longer wavelength anomalies, implying deep-seated structures. They could represent potential pathways for migration of enriched mineralized fluids. Geochemically, albite granites of peraluminous characteristics that had suffered extensive post-magmatic metasomatic reworking, resulted into development of (Zr, Hf, Nb, Ta, U, Th, Sn) and albite-enriched and greisenized granite body of about 600 m thick, and more than 3 km in strike length. The albite granite is characterized by sharp increase in average rare metal content: Zr (830 ppm), Hf (51 ppm), Nb (340 ppm), Ta (44 ppm), and U (90 ppm). Thorite, uranothorite, uraninite and zircon are the main uranium-bearing minerals of magmatic origin within the enclosing granite. However, with respect to Zr, Nb, and Ta, the albitized granite can be categorized as rare metal granite. The integration of airborne geophysical (magnetic and γ-ray spectrometric), geological, geochemical and mineralogical data succeeded in assigning the albite granite of Um Naggat pluton as a mineralized zone. This zone is characterized by its high thorium and uranium of hydrothermal origin as indicated by its low Th/U ratio, with rare metals mineralization controlled by two

  9. Technology Development for High-Efficiency Solar Cells and Modules Using Thin (<80 um) Single-Crystal Silicon Wafers Produced by Epitaxy: June 11, 2011 - April 30, 2013

    SciTech Connect

    Ravi, T. S.

    2013-05-01

    Final technical progress report of Crystal Solar subcontract NEU-31-40054-01. The objective of this 18-month program was to demonstrate the viability of high-efficiency thin (less than 80 um) monocrystalline silicon (Si) solar cells and modules with a low-cost epitaxial growth process.

  10. VizieR Online Data Catalog: 70um-1.2mm and N2H+ maps of IRDC18454 (W43) (Beuther+,

    NASA Astrophysics Data System (ADS)

    Beuther, H.; Tackenberg, J.; Linz, H.; Henning, T.; Krause, O.; Ragan, S.; Nielbock, M.; Launhardt, R.; Schmiedeke, A.; Schuller, F.; Carlhoff, P.; Nguyen-Luong, Q.; Sakai, T.

    2011-11-01

    The cloud complex with a size of ~6'x6' was observed with PACS on Herschel on 2010 March 9. Maps at 250, 350, and 500um were obtained with SPIRE 2010) on 2010 March 11. We observed IRDC18454-1 with the Plateau de Bure Interferometer during five nights in October and November 2009 at 93GHz in the C and D configurations. The N2H+ data has been observed using the BEARS receiver at the NRO 45m telescope in Nobeyama, Japan. The different velocity components have been observed one in April 2010 with an average system temperature of Tsys=206K, the second in June, at slightly lower Tsys. The MIPS 24um data (from MIPSGAL) as well as the IRAC 8um observations (from GLIMPSE) are taken from the Spitzer archive. The 1.2mm continuum data were first presented in Beuther et al. (2002, Cat. J/ApJ/566/945) and the APEX 870um data are part of the ATLASGAL survey of the Galactic plane (Schuller et al., 2009A&A...504..415S). (2 data files).

  11. Geochemistry of the Neoproterozoic metasediments of Malhaq and Um Zariq formations, Kid Metamorphic Complex, Sinai, Egypt: implications for source-area weathering, provenance, recycling, and depositional tectonic setting

    NASA Astrophysics Data System (ADS)

    El-Bialy, Mohammed Z.

    2013-04-01

    The Kid Metamorphic Complex of SE Sinai represents a thick volcano-sedimentary succession that underwent polyphase deformation and greenschist to upper amphibolite facies metamorphism in the NE part of the Arabian-Nubian Shield (ANS). The Malhaq and Um Zariq Formations, the target of this study, occupy roughly the northern half of this complex. The Malhaq Formation records several phases of Ediacaran sedimentation and volcanic activity (615-607 Ma), whereas Um Zariq Formation metasediments are relicts of an older sedimentary sequence (Cryogenian; 813±6 Ma). The Malhaq Formation comprises a series of dark gray structureless to schistose felsic to intermediate metavolcanics interbedded and intercalated with fine- to medium-grained foliated mica-rich phyllites and schists, while the Um Zariq Formation is a dominantly metasedimentary sequence, mainly represented by well-bedded metapelitic schists. Malhaq metasediments are enriched in SiO2, CaO and K2O and depleted in TiO2, Al2O3 and K2O relative to those of Um Zariq Formation. Aside from the relatively low Ni and Cr concentrations, compatible transition elements of these metasediments are comparable to average crustal contents. Except for marked Sr depletion, LILEs are around average continental crust values. Pronounced negative Nb-Ta anomalies in all samples, and general enrichment of Um Zariq samples in Th, U, Zr, Ti and Y relative to Malhaq ones are the main features of HFSEs. The REE patterns of all samples are parallel to sub-parallel LREE-enriched, with distinct negative Eu anomalies and weakly fractionated HREE segments. Geochemical investigations have revealed that the source rocks of Malhaq Formation metasediments underwent mild to moderate chemical weathering, whereas those of Um Zariq Formation have suffered severe chemical weathering. These metasediments are predominately derived from felsic to intermediate igneous sources, with a particular slight addition from recycled sedimentary source to the Malhaq

  12. An Investigation of the Adsorption Characteristics of 5'ATP and 5'AMP onto the Surface of Caso4 x 2H2O

    NASA Technical Reports Server (NTRS)

    Calderon, J.; Sweeney, M. A.

    1984-01-01

    A model has been proposed in which solid surfaces can act as a site for cataletic activity of condensation reactions for certain biomolecules. From this model, the adsorption characteristics of 5'ATP and 5'AMP onto the surface of CaSO4.2H2O was chosen for study. It has been proven that 5'ATP and 5'AMP do adsorb onto the surface of CaSO4. Studies were then made to determine the dependence of absorption versus time, concentration, ionic strength and pH. It was found that the adsorption of the nucleotides is highly pH dependent, primarily determined by the phosphate acid groups of the nucleic acid molecule. From this investigation, the data obtained is discussed in relation to the model for the prebiotic earth.

  13. Evaluation of high-resolution MetUM and AMPS forecasts of near-surface meteorological variables over Larsen C ice shelf and northern Antarctic Peninsula

    NASA Astrophysics Data System (ADS)

    Orr, Andrew; Kirchgaessner, Amelie; King, John; Weeks, Mark; Gadian, Alan; Kuipers Munneke, Peter; van den Broeke, Michiel; Steffen, Konrad

    2016-04-01

    High-resolution weather forecasts are an important tool for understanding the detailed patterns of surface melt on the Larsen C ice shelf (LCIS), Antarctic Peninsula. We investigate the skill of UK Met Office Unified Model (MetUM) and Antarctic Mesoscale Prediction System (AMPS) forecasts with horizontal grid spacing of 4-5 km for a 1 month period during January-February 2011 by comparing near-surface model output to automatic weather station measurements at 5 sites on the LCIS and 3 on the northern Antarctic Peninsula. Forecasts for the range 12-24 h showed a fairly homogeneous performance over the LCIS. The 2 m temperature simulated by AMPS has a correlation with observations of 0.5-0.6 and a systematic cold bias of around -1 degrees centigrade. By comparison, the MetUM had a higher correlation and was less negatively biased. The simulated surface pressure has a correlation of 0.99 and small biases in both models. AMPS yielded better results than the MetUM for 10 m wind speed, being able to capture particularly well synoptically-driven high wind speeds which the MetUM systematically underestimated. Both models struggle to simulate the 10 m wind direction when the wind conditions are highly variable. The simulation of specific humidity by both models was poor. Both models showed a general reduction in performance over the northern Antarctic Peninsula compared to the LCIS. Extending the analysis to consider the 12-36 h forecast range demonstrated a relatively weak dependence of model skill to the length of the forecast. The study focuses particularly on the representation of foehn wind events, which are an important contributor to surface melt over the LCIS, by examining additional ~1 km scale forecasts using the MetUM.

  14. Descompresión microvascular en espasmo hemifacial: Reporte de 13 casos y revisión de la literatura

    PubMed Central

    Campero, Alvaro; Herreros, Isabel Cuervo-Arango; Barrenechea, Ignacio; Andjel, Germán; Ajler, Pablo; Rhoton, Albert

    2016-01-01

    Objetivo: El propósito del presente trabajo es presentar los resultados de 13 pacientes con diagnóstico de espasmo hemifacial (EHF), en los cuales se realizó una descompresión microvascular (DMV). Material y Método: Desde Junio de 2005 a Mayo de 2014, 13 pacientes con diagnóstico de EHF fueron intervenidos quirúrgicamente, realizando una DMV. Se evaluó: edad, sexo, tiempo de evolución de la sintomatología, hallazgos intraoperatorios y resultados postoperatorios. Resultados: De los 13 pacientes intervenidos, 7 fueron mujeres y 6 varones. La media de edad fue de 53 años. El tiempo medio entre el inicio de la sintomatología y la intervención quirúrgica osciló entre 3 y 9 años. En todos los casos el EHF era típico, uno de ellos con neuralgia trigeminal concomitante, observándose en todos compresión neurovascular intraoperatoria. Por orden decreciente de frecuencia la causa de la compresión fue arteria cerebelosa anteroinferior, arteria cerebelosa posteroinferior, arteria dolicomega basilar y arteria dolicomega vertebral. El seguimiento postoperatorio fue en promedio de 24 meses. El 62% presentó desaparición postquirúrgica inmediata de la sintomatología preoperatoria, el 30% desaparición tras un período de 3 semanas a 2 meses (8% con mejoría parcial), y en el 8% no hubo mejoría. En cuanto a las complicaciones postoperatorias: 3 pacientes presentaron paresia facial II-III en la escala de House-Brackman (se recuperaron en un período de 6 meses), y 1 paciente presentó fístula de líquido cefalorraquídeo. Ninguno de los pacientes de la serie presentaron hipoacusia transitorio o permanente. Conclusión: La DMV como tratamiento del EHF es un procedimiento efectivo y seguro, que permite la resolución completa de la patología en la mayoría de los casos. PMID:27127708

  15. The dependence of land-atmosphere interactions on atmospheric parametrizations in the JULES/UM modelling system

    NASA Astrophysics Data System (ADS)

    Johnson, Helen; Best, Martin

    2015-04-01

    It has been understood for a while now that atmospheric behaviour is affected by land surface processes, modelling this relationship however still presents challenges. Most numerical weather prediction (NWP) models couple an atmospheric model to a land surface model in order to forecast the weather and/or climate. The Global Land-Atmosphere Coupling Experiment (GLACE) demonstrated that soil moisture variability has considerable control over atmospheric behaviour, particularly impacting on precipitation and temperature variability. The study also suggested that differences in coupling strengths between models may be due to differences in atmospheric parametrizations. There have since been other studies which support this claim but it is not yet clear which parameters control the land-atmosphere coupling strength or indeed what it should be. In this study we investigate whether certain atmospheric parameters hold more control than others over model sensitivity to land surface changes. We focus on the interaction of the JULES (Joint UK Land Environment Simulator) land surface model with the Met Office Unified Model (UM) that is used for operational NWP and climate prediction. For computational efficiency we ran the UM at a single site using a single column model (SCM) rather than running a global model simulation. A site in the Sahel region of West Africa was chosen as this is an area that was identified by GLACE as being especially responsive to changes in soil moisture. JULES was run several times with various different initial soil moisture profiles to create an ensemble of surface sensible and latent heat fluxes that could be used to force a set of different SCM runs in order to simulate a range of different atmospheric conditions. Various atmospheric parameters in the SCM were then perturbed to create additional sets of SCM runs with different sensitivities to soil moisture changes. By analysing the difference in spread between the standard configuration and the

  16. The Myriapoda and Onychophora collection (MY) of the Muséum national d'Histoire naturelle (MNHN, Paris).

    PubMed

    Bras, Gwenaël Le; Geoffroy, Jean-Jacques; Albenga, Laurent; Mauriès, Jean-Paul

    2015-01-01

    The Myriapoda and Onychophora collection dataset inventories the occurrence records of the collection of myriapods and onychophorans in the Muséum national d'Histoire naturelle, Paris. The dataset currently consists of 202 lots of onychophorans, representing all of those present, and almost ten thousand (9 795) lots of myriapods, representing 33 to 40% of the MNHN Myriapoda collection. This collection, which is of key historic importance, represents the results of two centuries of myriapod and onychophoran studies. The sources of the collection are worldwide, with a high representation for metropolitan France for the myriapods. None of the occurrences are yet georeferenced. Access to the dataset via the data portals of the MNHN and the GBIF has been made possible through the e-ReColNat project (ANR-11-INBS-0004). The Myriapoda and Onychophora collection of MNHN is actively expanding, hence both the collection and dataset are in continuous growth. The dataset can be accessed through the portals of GBIF at http://www.gbif.org/dataset/3287044c-8c48-4ad6-81d4-4908071bc8db and the MNHN at http://science.mnhn.fr/institution/mnhn/collection/my/item/search/form.

  17. The Myriapoda and Onychophora collection (MY) of the Muséum national d’Histoire naturelle (MNHN, Paris)

    PubMed Central

    Bras, Gwenaël Le; Geoffroy, Jean-Jacques; Albenga, Laurent; Mauriès, Jean-Paul

    2015-01-01

    Abstract The Myriapoda and Onychophora collection dataset inventories the occurrence records of the collection of myriapods and onychophorans in the Muséum national d’Histoire naturelle, Paris. The dataset currently consists of 202 lots of onychophorans, representing all of those present, and almost ten thousand (9 795) lots of myriapods, representing 33 to 40% of the MNHN Myriapoda collection. This collection, which is of key historic importance, represents the results of two centuries of myriapod and onychophoran studies. The sources of the collection are worldwide, with a high representation for metropolitan France for the myriapods. None of the occurrences are yet georeferenced. Access to the dataset via the data portals of the MNHN and the GBIF has been made possible through the e-ReColNat project (ANR-11-INBS-0004). The Myriapoda and Onychophora collection of MNHN is actively expanding, hence both the collection and dataset are in continuous growth. The dataset can be accessed through the portals of GBIF at http://www.gbif.org/dataset/3287044c-8c48-4ad6-81d4-4908071bc8db and the MNHN at http://science.mnhn.fr/institution/mnhn/collection/my/item/search/form. PMID:26448704

  18. THE TYPES OF PALAEARCTIC HIPPORHININI (Coleoptera, Curculionidae, Cyclominae) CONSERVED AT THE MUSÉUM NATIONAL D'HISTOIRE NATURELLE, PARIS.

    PubMed

    Meregalli, Massimo; Perrin, Hélène

    2015-11-30

    The Palaearctic species of Curculionidae: Cyclominae: Hipporhinini conserved at the Muséum national d'Histoire Naturelle, Paris were critically revised in order to recognise the type specimens, select lectotypes or, where necessary, designate neotypes. Out of 135 species whose types were presumably preserved in the MNHN, original type specimens of 116 could be found. The holotypes of 21 species were available, either because originally designated as such, or because the species was unequivocally based on a single specimen; a paratype of another taxon, whose holotype is preserved in another collection, was also examined. The lectotypes of 93 species were designated, and a syntype of another species was also seen. Neotypes of 10 more species were designated, thus leading to a total number of species whose type is conserved at the MNHN to 126. Type specimens of five more species described by French authors, not present in the MNHN but conserved in other museums, were found as well and were included in the paper, with the further designation of three lectotypes. All types treated herein were labelled and photographed.

  19. Calcareous benthonic foraminifera across the Cretaceous/Paleocene transition of Gebel Um El-Ghanayem, Kharga Oasis, Egypt

    NASA Astrophysics Data System (ADS)

    Orabi, Orabi H.; Khalil, Hamza M.

    2014-08-01

    The studies of benthic calcareous foraminifera of the Maastrichtian-early Paleocene Dakhla Formation in Gebel Um El-Ghanayem (Western Desert, Egypt), improve reconstruction of depositional environments of these successions. In total, 68 taxa of benthic foraminifera were identified in the studied succession. The late Maastrichtian assemblages (Zone CF3) are dominated by calcareous foraminifera with tapered tests, this tapered taxon Loxostomum applinae, Lox. tegulatum various dentalinid taxa, and Buliminella cushmani dominate in CF3 Biozone. We thus interpret these faunas as being dominated by infaunal morphogroups, suggesting a moderately eutrophic environment. Danian assemblages are characterized by abundant epifaunal trochospiral species, such as Cibicidoides abudurbensis, Cibicidoides farafraensis, and Gyroidinoides girardanus. The infaunal morphogroups make up 25-47% of fauna in the Danian, in contrast to 62-76% in the Upper Maastrichtian. This dominance of the Danian benthic foraminiferal assemblages by epifaunal or mixed epifaunal/infaunal morphogroups suggests that the food supply to the benthos was less abundant than in the latest Cretaceous. The Cretaceous/Paleocene boundary (K/Pg) is within the upper unit of the Lower Kharga Member and marked by a hiatus in at least the top of CF3 Zone of the Upper Maastrichtian to the Lower Paleocene (base Plc Zone).

  20. Interpretation of the microwave effect on induction time during CaSO4 primary nucleation by a cluster coagulation model

    NASA Astrophysics Data System (ADS)

    Guo, Zhichao; Li, Liye; Han, Wenxiang; Li, Jiawei; Wang, Baodong; Xiao, Yongfeng

    2017-10-01

    The effects of microwave on the induction time of CaSO4 are studied experimentally and theoretically. In the experiments, calcium sulfate is precipitated by mixing aqueous CaCl2 solution and Na2SO4 solution. The induction time is measured by recording the change of turbidity in solution. Various energy inputs are used to investigate the effect of energy input on nucleation. The results show that the induction time decreases with increasing supersaturation and increasing energy input. Employing the classical nucleation theory, the interfacial tension is estimated. In addition, the microwave effects on nucleation order (n) and nucleation coefficient (kN) are also investigated, and the corresponding values of homogeneous nucleation are compared with the values of heterogeneous nucleation in the microwave field. A cluster coagulation model, which brings together the classic nucleation models and the theories describing the behavior of colloidal suspension, was applied to estimate the induction time under various energy inputs. It is found that when nucleation is prominently homogeneous, the microwave energy input does not change the number of monomers in dominating clusters. And when nucleation is prominently heterogeneous, although the dominating cluster size increases with supersaturation increasing, at the same supersaturation level, the dominating cluster size remains constant in the microwave field.

  1. Performance of thin CaSO4:Dy pellets for calibration of a Sr90+Y90 source

    NASA Astrophysics Data System (ADS)

    Oliveira, M. L.; Caldas, L. V. E.

    2007-09-01

    Because of the radionuclide long half-life, Sr90+Y90, plane or concave sources, utilized in brachytherapy, have to be calibrated initially by the manufacturer and then routinely while they are utilized. Plane applicators can be calibrated against a conventional extrapolation chamber, but concave sources, because of their geometry, should be calibrated using relative dosimeters, as thermoluminescent (TL) materials. Thin CaSO4:Dy pellets are produced at IPEN specially for beta radiation detection. Previous works showed the feasibility of this material in the dosimetry of Sr90+Y90 sources in a wide range of absorbed dose in air. The aim of this work was to study the usefulness of these pellets for the calibration of a Sr90+Y90 concave applicator. To reach this objective, a special phantom was designed and manufactured in PTFE with semi spherical geometry. Because of the dependence of the TL response on the mass of the pellet, the response of each pellet was normalized by its mass in order to reduce the dispersion on TL response. Important characteristics of this material were obtained in reference of a standard Sr90+Y90 source, and the pellets were calibrated against a plane applicator; then they were utilized to calibrate the concave applicator.

  2. The resolution sensitivity of the Asian summer monsoon and its inter-model comparison between MRI-AGCM and MetUM

    NASA Astrophysics Data System (ADS)

    Ogata, Tomomichi; Johnson, Stephanie J.; Schiemann, Reinhard; Demory, Marie-Estelle; Mizuta, Ryo; Yoshida, Kohei; Osamu Arakawa

    2017-01-01

    In this study, we compare the resolution sensitivity of the Asian Summer Monsoon (ASM) in two Atmospheric General Circulation Models (AGCMs): the MRI-AGCM and the MetUM. We analyze the MetUM at three different resolutions, N96 (approximately 200-km mesh on the equator), N216 (90-km mesh) and N512 (40-km mesh), and the MRI-AGCM at TL95 (approximately 180-km mesh on the equator), TL319 (60-km mesh), and TL959 (20-km mesh). The MRI-AGCM and the MetUM both show decreasing precipitation over the western Pacific with increasing resolution, but their precipitation responses differ over the Indian Ocean. In MRI-AGCM, a large precipitation increase appears off the equator (5-20°N). In MetUM, this off-equatorial precipitation increase is less significant and precipitation decreases over the equator. Moisture budget analysis demonstrates that a changing in moisture flux convergence at higher resolution is related to the precipitation response. Orographic effects, intra-seasonal variability and the representation of the meridional thermal gradient are explored as possible causes of the resolution sensitivity. Both high-resolution AGCMs (TL959 and N512) can represent steep topography, which anchors the rainfall pattern over south Asia and the Maritime Continent. In MRI-AGCM, representation of low pressure systems in TL959 also contributes to the rainfall pattern. Furthermore, the seasonal evolution of the meridional thermal gradient appears to be more accurate at higher resolution, particularly in the MRI-AGCM. These findings emphasize that the impact of resolution is only robust across the two AGCMs for some features of the ASM, and highlights the importance of multi-model studies of GCM resolution sensitivity.

  3. The Workload of the UMS Faculty. A Report to the Joint Chairs of the Senate Budget and Taxation Committee and the House Appropriations Committee.

    ERIC Educational Resources Information Center

    Maryland Univ. System Administration, Adelphi.

    This report provides the results of a study of faculty workloads in the University of Maryland System (UMS) during the 1994-95 academic year. It was found that 19,446 course units were taught by full-time (FT) faculty at degree-granting institutions, an increase of 158 course units from the previous year while the number of FT faculty decreased by…

  4. Um supressor de fundo térmico para a câmara infravermelha CamIV

    NASA Astrophysics Data System (ADS)

    Jablonski, F.; Laporte, R.

    2003-08-01

    O ângulo sólido subtendido pelos pixels na câmara infravermelha do NexGal (CamIV) que operamos no OPD/LNA contém contribuições provenientes do sistema de coleta de fluxo propriamente dito - sendo esta a parte que interessa para as medidas astronômicas - e contribuições da obstrução central, sistema de suporte do espelho secundário e região exterior à pupila de entrada do telescópio. Estas últimas contribuições são devi-das à emissão de corpo negro à temperatura ambiente e aumentam exponencialmente para comprimentos de onda maiores que 2 micra (banda K, no infravermelho próximo). Embora a resultante pode ser quantificada e subtraída dos sinais relevantes, sua variância se adiciona à variância do sinal, e pode ser facilmente a contribuição domi-nante para a incerteza final das medidas, tornando ineficiente o processo de extração de informação e degradando a sensibilidade da câmara. A maneira clássica de resolver esse problema em sistemas ópticos que operam no infravermelho, onde os efeitos da emissão térmica do ambiente são importantes, é restringir o ângulo sólido subtendido pelos pixels individuais exclusivamente aos raios provenientes do sistema óptico. Para tanto, projeta-se uma imagem real, bastante reduzida, da pupila de entrada do sistema óptico num anteparo que transmita para o sistema de imageamento só o que interessa, bloqueando as contribuições das bordas externas à pupila de entrada, obstrução central do telescópio e sistema de suporte. Como a projeção é realizada em ambiente criogênico, a contribuição térmica espúria é efetivamente eliminada. Nós optamos por um sistema do tipo Offner para implementar na prática esta função. Trata-se de um sistema baseado em espelhos esféricos, bastante compacto e ajustado por construção. A opção por espelhos do mesmo material que o sistema de suporte (Alumínio) minimiza a dilatação diferencial, crítica nesse tipo de aplicação. Apresentamos as solu

  5. The Neoproterozoic Kolet Um Kharit bimodal metavolcanic rocks, south Eastern Desert, Egypt: a case of enrichment from plume interaction?

    NASA Astrophysics Data System (ADS)

    Farahat, E. S.

    2006-04-01

    Neoproterozoic metavolcanic rocks of Kolet Um Kharit (KUKh) in the southern Eastern Desert of Egypt have been traditionally regarded as a bimodal island-arc sequence. However, geological and geochemical arguments presented here make this interpretation doubtful. Geochemically, these rocks are classified into mafic (tholeiitic basalts) and felsic (high-K rhyodacites to rhyolites) groups. Both the KUKh mafic and felsic metavolcanic rocks show similar geochemical characteristics, implying a genetic link. They have comparable trace element ratios, such as Zr/Nb (27 30 vs. 20 36), Y/Nb (5.44 6.25 vs. 5.05 5.9), K/Rb (577 1164 vs. 573 937), Ba/La (4.29 25 9 vs. 11.4 16.2), Nb/Yb (1.82 2.03 vs. 1.76 1.99). Similarly both groups have parallel LREE-enriched patterns (La/YbCN=2.37 2.81 vs. 2.55 3.17); and negative Nb and Ta anomalies (Nb/Lapm=0.51 0.58 vs. 0.45 0.52 and Ta/Lapm=0.51 0.62 vs. 0.49 0.55). The observed negative Nb and Ta anomalies in the KUKh metavolcanic rocks cannot be attributed to crustal contamination or fractional crystallization. These rocks could represent either a remnant of break-up LIP or were derived from an enriched mantle source containing subduction components beneath an intraoceanic back-arc basin. The recognition of the KUKh rocks as derived from an enriched mantle source revives interest in models that involve enrichment from “plume” interaction during the evolution of the Arabian-Nubian Shield.

  6. The NEUF-DIX space project - Non-EquilibriUm Fluctuations during DIffusion in compleX liquids.

    PubMed

    Baaske, Philipp; Bataller, Henri; Braibanti, Marco; Carpineti, Marina; Cerbino, Roberto; Croccolo, Fabrizio; Donev, Aleksandar; Köhler, Werner; Ortiz de Zárate, José M; Vailati, Alberto

    2016-12-01

    Diffusion and thermal diffusion processes in a liquid mixture are accompanied by long-range non-equilibrium fluctuations, whose amplitude is orders of magnitude larger than that of equilibrium fluctuations. The mean-square amplitude of the non-equilibrium fluctuations presents a scale-free power law behavior q(-4) as a function of the wave vector q, but the divergence of the amplitude of the fluctuations at small wave vectors is prevented by the presence of gravity. In microgravity conditions the non-equilibrium fluctuations are fully developed and span all the available length scales up to the macroscopic size of the systems in the direction parallel to the applied gradient. Available theoretical models are based on linearized hydrodynamics and provide an adequate description of the statics and dynamics of the fluctuations in the presence of small temperature/concentration gradients and under stationary or quasi-stationary conditions. We describe a project aimed at the investigation of Non-EquilibriUm Fluctuations during DIffusion in compleX liquids (NEUF-DIX). The focus of the project is on the investigation in micro-gravity conditions of the non-equilibrium fluctuations in complex liquids, trying to tackle several challenging problems that emerged during the latest years, such as the theoretical predictions of Casimir-like forces induced by non-equilibrium fluctuations; the understanding of the non-equilibrium fluctuations in multi-component mixtures including a polymer, both in relation to the transport coefficients and to their behavior close to a glass transition; the understanding of the non-equilibrium fluctuations in concentrated colloidal suspensions, a problem closely related with the detection of Casimir forces; and the investigation of the development of fluctuations during transient diffusion. We envision to parallel these experiments with state-of-the-art multi-scale simulations.

  7. Remote sensing detection of gold related alteration zones in Um Rus area, Central Eastern Desert of Egypt

    NASA Astrophysics Data System (ADS)

    Amer, Reda; Kusky, Timothy; El Mezayen, Ahmed

    2012-01-01

    Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and Phased Array L-band Synthetic Aperture Radar (PALSAR) images covering the Um Rus area in the Central Eastern Desert of Egypt were evaluated for mapping geologic structure, lithology, and gold-related alteration zones. The study area is covered by Pan-African basement rocks including gabbro and granodiorite intruded into a variable mixture of metavolcanics and metasediments. The first three principal component analyses (PCA1, PCA2, PCA3) in a Red-Green-Blue (RGB) of the visible through shortwave-infrared (VNIR + SWIR) ASTER bands enabled the discrimination between lithological units. The results show that ASTER band ratios ((2 + 4)/3, (5 + 7)/6, (7 + 9)/8) in RGB identifies the lithological units and discriminates the granodiorite very well from the adjacent rock units.The granodiorites are dissected by gold-bearing quartz veins surrounded by alteration zones. The microscopic examination of samples collected from the alteration zones shows sericitic and argillic alteration zones. The Spectral Angle Mapper (SAM) and Spectral Information Divergence (SID) supervised classification methods were applied using the reference spectra of the USGS spectral library. The results show that these classification methods are capable of mapping the alteration zones as indicated by field verification work. The PALSAR image was enhanced for fracture mapping using the second moment co-occurrence filter. Overlying extracted faults and alteration zone classification images show that the N30E and N-S fractures represent potential zones for gold exploration. It is concluded that the proposed methods can be used as a powerful tool for ore deposit exploration.

  8. Síndrome antifosfolípidos catastrófico. Reporte de caso y revisión bibliográfica.

    PubMed

    Orantes, Luis Del Carpio; Martínez, Chantall Citlally Anaya; Casas, Elías Bonilla

    2017-01-01

    Se reporta un caso de una condición clínica sumamente rara, la cual cursa con falla multiorgánica aguda posterior a una tormenta trombótica relacionada con anticuerpos antifosfolípidos, el denominado síndrome antifosfolípidos (SAF) catastrófico, el cual comenzó como un cuadro recurrente de trombosis mesentérica, con antecedentes de insuficiencia venosa y úlceras distales probablemente asociadas a un SAF no identificado, ameritando manejo en terapia intensiva y la consulta por el experto mundial Dr. Ricard Cervera, quien confirmó el diagnóstico y recomendó tratar como tal. La evolución del paciente fue satisfactoria hasta el momento. Se hacen recomendaciones finales de diagnóstico y se comentan las opciones de tratamiento actuales, como rituximab o eculizumab. El presente caso fue agregado al registro internacional de SAF catastrófico (International CAPS Registry), que actualmente alberga alrededor de 500 casos en todo el mundo. The present document is the report of a case of a very rare clinical entity, which presents with acute multiorganic failure after a thrombotic storm related to antiphospholipid antibodies, the so-called catastrophic antiphospholipid syndrome, which began as a recurrent picture of mesenteric thrombosis, with a previous history of venous insufficiency and distal ulcers probably associated with an unidentified antiphospholipid; deserving management in intensive care and the consultation by the world expert, Dr. Ricard Cervera who confirmed the diagnosis and recommend treating as such entity, the patient's evolution was satisfactory so far. Final recommendations for diagnosis and current treatment options such as rituximab or eculizumab are made. The present case was added to the international registry that currently houses around 500 cases worldwide (International CAPS Registry).

  9. Intensity variation study of the radiation field in a mammographic system using thermoluminescent dosimeters TLD-900 (CaSO4:Dy)

    NASA Astrophysics Data System (ADS)

    Corrêa, E. L.; Silva, J. O.; Vivolo, V.; Potiens, M. P. A.; Daros, K. A. C.; Medeiros, R. B.

    2014-02-01

    This study presents the results of the intensity variation of the radiation field in a mammographic system using the thermoluminescent dosimeter TLD-900 (CaSO4:Dy). These TLDs were calibrated and characterized in an industrial X-ray system used for instruments calibration, in the energy range used in mammography. They were distributed in a matrix of 19 lines and five columns, covering an area of 18 cm×8 cm in the center of the radiation field on the clinical equipment. The results showed a variation of the intensity probably explained by the non-uniformity of the field due to the heel effect.

  10. Thermoluminescence Response of CaF2:Mn, CaFz:Dy and CaSO4:Tm to Protons and Alpha-Particles,

    DTIC Science & Technology

    1987-06-01

    linear energy tranfer (LET), which is the average stopping power over the ion range, is also shown as it is expected that the response ratio may be LET...were used for the CaSO4 :Tm and CaF 2 :Mn powders, respectively. Small samples of the powders were spread over the heating planchet to avoid self...absorption during reading. A different procedure was required for the alphas. A relatively thick layer of powder was packed onto the heating planchet

  11. ESR dosimetry using inorganic materials: a case study of Li2CO3 and CaSO4:Dy as prospective dosimeters.

    PubMed

    Murali, S; Natarajan, V; Venkataramani, R; Pushparaja; Sastry, M D

    2001-08-01

    The CO2- radical ion, detected by ESR technique in bones and teeth enamel, was proved to be invaluable in high level and retrospective dosimetry. In these matrices, impurity carbonate (at phosphate sites) was the precursor to CO2-. With a view to investigate the possibility of using inorganic materials such as lithium carbonate as ESR dosimeters, studies were carried out on gamma-irradiated Li2CO3. The intensity of radiation-induced ESR signals of Li2CO3 at g = 2.0036 (CO3-) and g = 2.0006 (CO2-) was followed as a function of gamma dose in the low dose range of 1-1350 Gy. It was observed that the intensity of the ESR signal at g = 2.0036 (CO3-) was in a linear relation with the radiation dose in the dose range 10-800 Gy and the signal at g = 2.0006 (CO2-) showed linear response in the dose range 5-800 Gy. The lowest dose that could be detected in the present studies using the signal of CO2- in Li2CO3 powder samples (approximately 50 mg) is 3.2 Gy. ESR studies were also carried out on the widely used TL dosimetric material CaSO4:Dy and in pure CaSO4 after gamma irradiation. The TL materials were used in powder as well as pellet forms. The linearity of ESR response with dose for powder and pellet forms of CaSO4: Dy was also studied using the signals at g = 2.0030 (SO3-) and at g = 2.0139 (SO4-). It was observed that the range of linearity of dose response extended between 20 and 1200 Gy, for SO3- signals. The results of dosimetric study indicate that the ESR-Li2CO3 system could be used in dosimetric applications in radiotherapy. However, for the actual applications further advancement is needed to lower the detection limit. The TL phosphor, CaSO4:Dy in powder and pellet forms, could be used as ESR dosimeter in the dose range 20-600 Gy.

  12. Solubility in the ternary system CaSO4 + Na2SO4 + H2O at 298.15 K

    NASA Astrophysics Data System (ADS)

    Popović, D.; Stupar, G.; Miladinović, J.; Todorović, M.; Zrilić, M.

    2011-12-01

    The solubility in the ternary system, aqueous mixture of CaSO4 and Na2SO4, at T = 298.15 K comprises five different salts: calcium sulfate dihydrate, mirabilite, thenardite, glauberite and labile salt. Using the Extended Pitzer's Ion Interaction model for pure and mixed electrolyte solutions and criteria of phase equilibria, predicted solubility behavior of salts was compared with experimental results from literature. The agreement between calculated and experimental solubilities was excellent in the ionic strength range up to 10.9062 mol kg-1.

  13. [Cutaneous malignant melanoma: a retrospective study of seven years (2006-2012)].

    PubMed

    Moreira, Jorge; Moreira, Elisabete; Azevedo, Filomena; Mota, Alberto

    2014-01-01

    Introdução: O melanoma maligno é a neoplasia cutânea mais agressiva, e a sua incidência tem vindo a aumentar nas últimas décadas. A possibilidade de cura depende de um diagnóstico atempado, sendo fundamental o conhecimento da sua epidemiologia para a implementação de programas de prevenção primária e deteção precoce do melanoma. Material e Métodos: Foi efetuada revisão dos processos clínicos dos doentes com melanoma maligno cutâneo primário, diagnosticados entre janeiro de 2006 e dezembro de 2012, no Centro Hospitalar de São João, Porto. Resultados: Analisaram-se os 148 casos de melanoma diagnosticados neste período, tendo-se observado um predomínio do sexo feminino (razão F:M - 1,6:1). A média etária na altura do diagnóstico foi de 61 anos. As localizações mais frequentemente envolvidas foram os membros inferiores e o tronco. No sexo masculino o dorso foi o local mais afetado, enquanto no sexo feminino as lesões ocorreram, preferencialmente, nas pernas. O melanoma de extensão superficial foi o subtipo predominante em quase todas as faixas etárias. Verificou-se um predomínio dos melanomas finos e o índice mitótico foi intermédio (1-6 mitoses/ mm2) na maioria dos doentes. A ulceração esteve presente em 22,3% dos casos e predominou nos melanomas espessos e no subtipo nodular. A maioria dos doentes encontrava-se no estádio IA. A progressão para doença metastática ocorreu em 20 doentes. Discussão: O perfil do doente com melanoma cutâneo, no Centro Hospitalar de São João, apresenta características relativamente semelhantes às descritas na literatura. Conclusão: O predomínio dos melanomas finos, considerados de melhor prognóstico, é provavelmente, o resultado de um diagnóstico cada vez mais precoce.

  14. Usina de ciências: um espaço pedagógico para aprendizagens múltiplas

    NASA Astrophysics Data System (ADS)

    Martin, V. A. F.; Poppe, P. C. R.; Orrico, A. C. P.; Pereira, M. G.

    2003-08-01

    Entendemos que o Ensino de Astronomia é especialmente apropriado para motivar os alunos e aprofundar conteúdos em diversas áreas do conhecimento, pois envolve temas ligados à Física, Matemática, Química, Computação, Tratamento de Imagens e Instrumentação de Alta Precisão, além daqueles pertinentes as áreas de Geografia, História e Antropologia. Contudo, apesar do caráter interdisciplinar que esta ciência possui, a realidade atual é que a maioria dos professores em sala de aula não foram devidamente capacitados, durante o período de formação acadêmica, para ministrar conteúdos de Astronomia nos atuais Ensinos Fundamental e Médio. Neste trabalho, discutiremos de maneira ampla, num primeiro momento, a realidade do atual ensino de ciências praticado no Estado da Bahia, apontando por dependência administrativa, o crescimento e a redução do número de escolas, da taxa de analfabetismo por faixa etária, da escolarização, do atendimento, da aprovação, reprovação e abandono, de equipamentos e laboratórios e o grau de formação dos nossos atuais professores em pleno exercício de atividade docente. Num segundo momento, discutiremos o papel do Observatório Astronômico Antares/UEFS dentro desse contexto, ou seja, suas ações implementadas ao longo dos últimos anos e em particular, o recente projeto de extensão Ensino e Difusão de Astronomia, financiado pela Fundação Vitae, que procura traduzir no lúdico, no brincar de ciências, um espaço pedagógico para aprendizagens múltiplas. Neste, o papel do professor multiplicador associado ao laboratório de kits didáticos, de fácil construção e manipulação (alguns dos quais serão mostrados), perfazem os principais veículos para o desenvolvimento de conhecimentos, atitudes, habilidades e valores que preparam os nossos alunos para a carreira técnico-científica e para sua participação crítica e criativa na Sociedade.

  15. BUDDA (Bulge/Disk Decomposition Analysis) - um novo programa para análise estrutural de galáxias

    NASA Astrophysics Data System (ADS)

    Gadotti, D. A.; de Souza, R. E.; Dos Anjos, S.

    2003-08-01

    Tem sido prática comum nos últimos anos estudar a distribuição de luminosidade em galáxias fazendo uso da informação contida em toda a imagem da galáxia, já que esta técnica tem se mostrado muito mais confiável do que o simples ajuste de perfis radiais de luminosidade. Através destes estudos bidimensionais, melhores resultados tem sido obtidos na análise e.g. do Plano Fundamental, de correlações entre os parâmetros estruturais de galáxias, de sub-estruturas como barras e anéis nucleares etc. Apresentamos um novo código bidimensional, o BUDDA, de análise estrutural de galáxias, que será disponibilizado para a comunidade. Desenvolvido por nós, o código determina os parâmetros estruturais de galáxias de forma prática e robusta, e pode ser aplicado genericamente em qualquer estudo sobre a formação, evolução e estrutura de galáxias. O programa ainda permite a avaliação direta de sub-estruturas, através de imagens residuais que são obtidas ao se subtrair, das imagens originais, bojo e disco sintéticos que melhor representam essas componentes da galáxia sob consideração. Será apresentada a forma de utilização do código, bem como séries de testes que atestam a sua funcionalidade. Além disso, os resultados da aplicação do código em uma amostra de 51 galáxias serão expostos como exemplo prático, e do seu enorme potencial de uso.

  16. Connecting spatial and temporal scales of tropical precipitation in observations and the MetUM-GA6

    NASA Astrophysics Data System (ADS)

    Martin, Gill M.; Klingaman, Nicholas P.; Moise, Aurel F.

    2017-01-01

    This study analyses tropical rainfall variability (on a range of temporal and spatial scales) in a set of parallel Met Office Unified Model (MetUM) simulations at a range of horizontal resolutions, which are compared with two satellite-derived rainfall datasets. We focus on the shorter scales, i.e. from the native grid and time step of the model through sub-daily to seasonal, since previous studies have paid relatively little attention to sub-daily rainfall variability and how this feeds through to longer scales. We find that the behaviour of the deep convection parametrization in this model on the native grid and time step is largely independent of the grid-box size and time step length over which it operates. There is also little difference in the rainfall variability on larger/longer spatial/temporal scales. Tropical convection in the model on the native grid/time step is spatially and temporally intermittent, producing very large rainfall amounts interspersed with grid boxes/time steps of little or no rain. In contrast, switching off the deep convection parametrization, albeit at an unrealistic resolution for resolving tropical convection, results in very persistent (for limited periods), but very sporadic, rainfall. In both cases, spatial and temporal averaging smoothes out this intermittency. On the ˜ 100 km scale, for oceanic regions, the spectra of 3-hourly and daily mean rainfall in the configurations with parametrized convection agree fairly well with those from satellite-derived rainfall estimates, while at ˜ 10-day timescales the averages are overestimated, indicating a lack of intra-seasonal variability. Over tropical land the results are more varied, but the model often underestimates the daily mean rainfall (partly as a result of a poor diurnal cycle) but still lacks variability on intra-seasonal timescales. Ultimately, such work will shed light on how uncertainties in modelling small-/short-scale processes relate to uncertainty in climate change

  17. Solar Physics Topics in High School: Analysis of a Course with Practical Activities at Dietrich Schiel Observatory. (Spanish Title: Temas de Física Solar Para Estudiantes de Escuelas Secundarias: un Análisis de un Curso con Enfoque Práctico en el Observatorio Dietrich Schiel.) Tópicos de Física Solar no Ensino Médio: Análise de um Curso com Atividades Práticas no Observatório Dietrich Schiel

    NASA Astrophysics Data System (ADS)

    Calbo Aroca, Silvia; Donizete Colombo, Pedro, Jr.; Celestino Silva, Cibelle

    2012-12-01

    algunos estudiantes sabían que un espectro puede estar formado por un prisma o red de difracción, la mayor parte de ellos desconocía la naturaleza de las líneas espectrales. A lo largo del curso, esta cuestión fue trabajada con un enfoque práctico mediante la observación del espectro solar y de las lámparas durante clases expositivas/dialogadas. Los resultados obtenidos en el curso mustran la importancia de los centros de ciencia como un apoyo en la educación formal. En este caso en particular, la Sala Solar del Observatorio Dietrich Schiel se destaca como un entorno favorable para la enseñanza de la física moderna en la escuela secundaria. Este trabalho analisa resultados obtidos em um curso sobre física solar para alunos do ensino médio promovido pelo Observatório Dietrich Schiel da USP. O curso foi elaborado pelos autores com a intenção de investigar concepções sobre o Sol, ensinar tópicos de física moderna relacionados ao Sol e conhecimentos gerais sobre o astro rei. A metodologia de coleta de dados consistiu em gravação em áudio e vídeo das aulas e das entrevistas semi-estruturadas, e respostas a questionários escritos. Os resultados mostraram que a maioria dos participantes concebeu o Sol como constituído por fogo e as manchas solares como buracos na superfície solar. Embora alguns alunos soubessem que um espectro pode ser formado por um prisma ou rede de difração, a maior parte deles desconhecia a natureza das linhas espectrais. Ao longo do curso, este tema foi trabalhado com uma abordagem prática com observação do espectro solar e de lâmpadas e em aulas expositivo-dialogadas. Os resultados obtidos no curso apontam para a importância dos centros de ciências como parceiros da educação formal. Neste caso específico, a Sala Solar do Observatório Dietrich Schiel é um ambiente propício para o ensino de física moderna no ensino médio.

  18. UmUTracker: A versatile MATLAB program for automated particle tracking of 2D light microscopy or 3D digital holography data

    NASA Astrophysics Data System (ADS)

    Zhang, Hanqing; Stangner, Tim; Wiklund, Krister; Rodriguez, Alvaro; Andersson, Magnus

    2017-10-01

    We present a versatile and fast MATLAB program (UmUTracker) that automatically detects and tracks particles by analyzing video sequences acquired by either light microscopy or digital in-line holographic microscopy. Our program detects the 2D lateral positions of particles with an algorithm based on the isosceles triangle transform, and reconstructs their 3D axial positions by a fast implementation of the Rayleigh-Sommerfeld model using a radial intensity profile. To validate the accuracy and performance of our program, we first track the 2D position of polystyrene particles using bright field and digital holographic microscopy. Second, we determine the 3D particle position by analyzing synthetic and experimentally acquired holograms. Finally, to highlight the full program features, we profile the microfluidic flow in a 100 μm high flow chamber. This result agrees with computational fluid dynamic simulations. On a regular desktop computer UmUTracker can detect, analyze, and track multiple particles at 5 frames per second for a template size of 201 ×201 in a 1024 × 1024 image. To enhance usability and to make it easy to implement new functions we used object-oriented programming. UmUTracker is suitable for studies related to: particle dynamics, cell localization, colloids and microfluidic flow measurement. Program Files doi : http://dx.doi.org/10.17632/fkprs4s6xp.1 Licensing provisions : Creative Commons by 4.0 (CC by 4.0) Programming language : MATLAB Nature of problem: 3D multi-particle tracking is a common technique in physics, chemistry and biology. However, in terms of accuracy, reliable particle tracking is a challenging task since results depend on sample illumination, particle overlap, motion blur and noise from recording sensors. Additionally, the computational performance is also an issue if, for example, a computationally expensive process is executed, such as axial particle position reconstruction from digital holographic microscopy data. Versatile

  19. Effect of ultrasound on the morphology of the CaCO3 precipitated from CaSO4-NH3-CO2-H2O system

    NASA Astrophysics Data System (ADS)

    Cheng, Huaigang; Wang, Xin; Wang, Bo; Zhao, Jing; Liu, Yong; Cheng, Fangqin

    2017-07-01

    Micron-grade calcium carbonate (CaCO3) crystals are by-products in the preparation of (NH4)2SO4 fertilizer using CaSO4·2H2O, NH3, and CO2. Since ultrasound can make crystals smaller and their morphology quite complex, the morphological change rules need to be studied to make meaningful use of them. In the present work, the morphologies of CaCO3 crystals precipitated from the ultrasound CaSO4-NH3-CO2-H2O system were analyzed in different conditions. It was found that ultrasound can make the crystals smaller in nucleation or the early growth stage, or it can make the shapes diversified and dispersed by influencing the solution property and in the aging process. In an ultrasound environment, crystals may be square, spheroidal, ellipsoidal, pisciform (spindle), hexagonal, carambola-like, or scattered particles. High-concentrations of NH3 and CO2 facilitate CaCO3 crystals becoming smooth balls, while high-intensity ultrasound and a high-concentration of foreign Na+ ions help to turn CaCO3 into tiny square particles or a clustered aggregate of tiny particles with rough surfaces.

  20. The ultraviolet spectrum of the gravitational lens candidate UM 425 = QSO 1120+019: Evidence for broad absorption line (BAL) structure

    NASA Technical Reports Server (NTRS)

    Michelitsianos, A. G.; Oliversen, R. J.

    1995-01-01

    The UV line profile structure of high-ionization resonance lines found with the International Ultraviolet Explorer (IUE) in the brightest of four multiply imaged sources (images-A) in the candidate gravitational lens UM 425 = QSO 1120+019 indicates broad absorption line (BAL) structure. The deep-broad trough associated with the O IV line extends to velocities approiximately -12,000 km/s, and contains disrete features that suggest multicomponent velocity structure. This structure may include contributions from C IV absorption from the early-type galaxy that is believed to lens UM 425. A strong absorption feature in the blue wing of the Lyman-alpha lambda 1216 emission line may be a Lyman alpha absorption system at a Z(sub Ly alpha) = 1.437 +/- 0.003, or it may be formed by the superposition of the broad N V lambda lambda 1238, 1242 absorption trough on the extended blue emission wing of the QSO Lyman-alpha line. We obtained a redshift of Z(sub QSO) = 1.471 +/- 0.003 from Lyman-alpha lambda 1215, consistent with the redshift found by Meylan and Djorgovski in the optical. The Lyman-alpha line appears unusally weak due to the presence of N V lambda 1240 BAL absorption. A Lyman-limit absorption system at lambda 912 was not observed in the QSO rest frame. The detection of BAL structure in the other weaker ground-state resonance lines of N II (l) and S IV (l) was not found, suggesting these lines are formed in a region that is distinct from the BAL component. Detection of BAL structure in the other fainter images in this system with Hubble Space Telescope (HST) instrumentation, similar to structure observed here in image A, could provide evidence that UM 425 is a gravitational lens.

  1. 0.18 um 3.1-10.6 GHz CMOS UWB LNA with 25±1dB gain

    NASA Astrophysics Data System (ADS)

    Shamsadini, Shila; Kashani, Farokh Hojat; Bathaei, Neda

    2011-05-01

    A 3.1-10.6 GHz ultra-wideband low noise-amplifier (UWB LNA) using standard 0.18 um CMOS technology which is applicable in telecommunication has been reported. A two-stage, common-gate in cascade with cascode, UWB LNA has been proposed to achieve more than 10 dB input and output return loss, maximum gain of 26 dB, and NF of 2.9 dB over the full frequency band. The proposed LNA consumes 10 mW from 1.8 V supply. The designed LNA has an excellent high gain in comparison with previous works.

  2. Antiscaling efficacy of CaCO3 and CaSO4 on polyethylene glycol (PEG)-modified reverse osmosis membranes in the presence of humic acid: interplay of membrane surface properties and water chemistry.

    PubMed

    Ray, Jessica R; Wong, Whitney; Jun, Young-Shin

    2017-02-15

    Mineral scaling persists in many water treatment processes. More specifically, it can significantly reduce the efficacy of aromatic polyamide (PA) membranes during reverse osmosis (RO) water treatment. Previous studies have integrated hydrophilic materials, such as polyethylene glycol (PEG), onto RO membranes to combat scaling from generally hydrophobic feed water constituents; however, there are still outstanding knowledge gaps regarding the interplay of the modified membrane surface chemistry and the water chemistry in complex RO feed waters. In this work, we have investigated the mechanisms of hydrophilic PEG-grafted PA membranes in reducing mineral scaling from calcium carbonate (CaCO3) and calcium sulfate (CaSO4) in the presence of humic acid (HA). Based on surface and solution analyses, we found that colloidal formation was significantly reduced on PA-PEG surfaces in systems without HA. When HA was introduced, CaCO3 scaling was reduced on both virgin and PA-PEG membrane surfaces; while, interestingly, synergistic PEG-HA-CaSO4 interactions increased CaSO4 colloidal formation on PA-PEG membranes. Promoted CaSO4 formation results from a high negative surface charge near the PEG-modified membrane surface when HA and SO4(2-) are present, attracting more Ca(2+) to form CaSO4. The results of this work provide new information about colloidal formation at water-membrane interfaces for designing better PEG and PEG-based scale-resistant desalination membranes.

  3. The influence of high-energy 7Li ions on the TL response and glow curve structure of CaSO4 : Dy

    NASA Astrophysics Data System (ADS)

    Salah, Numan; Sahare, P. D.

    2006-07-01

    Thermoluminescence (TL) of CaSO4 : Dy phosphor, irradiated by 48 MeV 7Li ions with different fluences in the range 1 × 109-5 × 1011 ions cm-2 has been studied. The samples from the same batch were also exposed to γ-rays from a Co60 source for comparative studies. The TL glow curve of the material, irradiated with the ion beam has a simple structure with a prominent peak at around 494 K along with three small shoulders at around 424, 592 and 662 K. The TL saturation has been observed at around the fluence 1 × 1011 ions cm-2. As the fluence is increased from 1 × 109 to 5 × 1011 ions cm-2, a shift in the peak positions towards the lower temperature side, by around 7 K was observed. However, with increasing fluence, the TL glow curve structure remains invariant with no change in the relative intensities between the 494 and 424 K peaks, while in the case of γ-irradiated samples, in contrast, the intensity ratios of these peaks increase exponentially with exposures. Theoretical analysis of the glow curves of the ion beam and γ-irradiated samples was done by the glow curve deconvolution method. The efficiency of CaSO4 : Dy to 48 MeV 7Li ions has been measured relative to γ-rays of Co60 and found to be 0.81. This result, along with the observed good linearity over a large span of fluences, shows that this phosphor is quite suitable as a dosimeter for heavy charged particles.

  4. Experimental Determination of Sr partitioning and Ca Isotope Fractionation in the CaSO4-NaCl-H2O system

    NASA Astrophysics Data System (ADS)

    Brown, S. T.; DePaolo, D. J.

    2012-12-01

    Anhydrite and gypsum are important, retrograde soluble minerals in geologic environments including mid ocean ridge hydrothermal systems and saline aquifers. Precipitation and/or dissolution of Ca-sulfate phases may control the distribution of stable Ca isotopes and Sr concentrations between fluids and minerals. Considerable research in the CaCO3-H2O system suggests that stable isotope fractionation of Ca between the dissolve pool and precipitating mineral are primarily controlled by the mineral growth rates. The partitioning of Sr appears to be growth rate dependent as well. We designed a series of hydrothermal precipitation experiments to test the idea that similar rate dependent isotope and trace metal fractionation occurs in the CaSO4-H2O system. Experiments were conducted between 110-160C using a titanium Parr mini bench top reactor. Mixtures of CaCl2, SrCl2 and Na2SO4 were dissolved in water and loaded into a Teflon lined vessel. Sealed experiments were purged with nitrogen gas for approximately 20 minutes to create a CO2-free environment. Experiments were rapidly charged to approximately 250 psi and heated to the desired run temperature. Experiment duration was between 36 and 360 hours. Completed experiments were depressurized and solid run products were recovered by filtration. Fluid samples from the beginning and end of each experiment were preserved for elemental and isotopic measurements. Preliminary results for experiments with CaSO4 supersaturation ~10 have thin needle-like crystals of mixed gypsum-bassanite-anhydrite based on SEM and XRD analysis. Sr distribution coefficients range between 0.48-0.74, greater than published equilibrium values, while D44Ca = 0.7-1.1 per mil, similar to low temperature carbonates.

  5. Spitzer And Herschel-based Seds Of 24um-bright z 0.3- 3.0 Starbursts And Obscured Quasars

    NASA Astrophysics Data System (ADS)

    Sajina, Anna; Yan, L.; Fadda, D.; Dasyra, K.; Huynh, M.

    2012-05-01

    A key legacy of Spitzer are the mid-IR spectra of high-redshift objects - which would not be available again until the JWST. Such spectra have been very useful for disentangling the contribution of AGN and star-formation to the observed dust emission. We have constructed a unique Spitzer mid-IR spectroscopic, nearly 24um flux-limited sample, of 191 sources at z 0.3-2.8 and with log(L_IR/L_sun) 11-13. The size and selection of the sample, allows us to study galaxy evolution from the perspective of the mid-IR where AGN are prominent. Indeed, mid-IR diagnostics suggest that 70% of our sample is AGN-dominated. Without far-IR data however, it is unclear to what degree this conclusion applies to the overall IR emission. Here we extend the earlier mid-IR studies to incorporate Herschel far-IR photometry and address the full IR SED of Spitzer 24um-selected galaxies. This allows for the overall AGN contribution to their power output to be estimated. This also allows for a direct comparison with other populations both locally and at high redshifts - ultimately placing the 24um-bright populations in the wider context of galaxy evolution. Our first conclusion is that indeed mid-IR studies alone underestimate the level of star-formation in these systems -- we now find that only 19% of the sample are AGN-dominated (i.e. where the AGN luminosity is at least 50% of the total L_IR). We also find that sources of comparable L_IR locally, are not good analogs to the our sources -- consistent for example with recent ideas of cold gas accretion vs. mergers as a means of triggering extreme starbursts. Since local sources are not good analogs to high redshift ones, we construct a set of IR SEDs templates for high redshift starbursts and obscured quasars. The templates are public and useful, among others, for interpreting the all-sky mid-IR data from WISE.

  6. Imagens do céu ontem e hoje - um multimídia interativo de astronomia e uma nova exposição no MAST

    NASA Astrophysics Data System (ADS)

    Caretta, C. A.; Lima, F. P.; Requeijo, F.; Vieira, G. G.; Alves, F.; Valente, M. E. A.; de Almeida, R.; de Garcia, G. C.; Quixadá, A. C.

    2003-08-01

    "Imagens do Céu Ontem e Hoje" é o título de uma nova exposição que está sendo inaugurada no Museu de Astronomia e Ciências Afins (MCT), que inclui experimentos interativos, maquetes, réplicas e 8 terminais de computador com um multimídia interativo sobre Astronomia para consulta dos visitantes. O multimídia apresenta um conteúdo bastante extenso, que engloba quase todos os temas em Astronomia, consistindo numa fonte de divulgação e pesquisa para um público que vai das crianças até estudantes universitários. O conteúdo está distribuído em mais de 500 páginas de texto divididas em 4 módulos: "O Universo", "Espectroscopia", "Telescópios" e "Observando o Céu". Cada módulo é subdividido em 5 seções, em média, cada uma iniciada por uma animação que ilustra os temas a serem abordados na seção. Ao final da animação, uma lista de temas é apresentada sob o título "Saiba Mais". Para exemplificar, o módulo "O Universo" contém as seguintes seções: "O Universo visto pelo homem", "Conhecendo o Sistema Solar", "Indo além do Sistema Solar", "Nossa Galáxia, a Via-Láctea" e "Indo mais além, a imensidão do Universo". A seção "Conhecendo o Sistema Solar", por sua vez, tem os seguintes temas: "A origem do Sistema Solar", "O Sol", "Os planetas", "Satélites, asteróides, cometas e outros bichos..." e "O Sistema Solar em números". Cada texto é repleto de imagens, quadros, desenhos, esquemas, etc, além de passatempos ao final de cada seção, incluindo jogos interativos, quadrinhos e curiosidades, que auxiliam o aprendizado de forma divertida. Apresentamos neste trabalho as idéias gerais que permearam a produção da exposição, e uma viagem pelo multimídia para exemplificar sua estrutura e conteúdo. O multimídia será posteriormente disponibilizado para o público externo pela página eletrônica do MAst e/ou por intermédio de uma publicação comercial.

  7. Structural evolution and Cenozoic tectonostratigraphy of the Cairo-Suez district, north Eastern Desert of Egypt: Field-structural data from Gebel Qattamiya-Gebel Um Reheiat area

    NASA Astrophysics Data System (ADS)

    Hagag, Wael

    2016-06-01

    Detailed field mapping reveals that continental rifting is strongly deforming the Gebel Qattamiya-Gebel Um Reheiat area and the entire Cairo-Suez district, in north Eastern Desert of Egypt. Rift-related structures are predominantly represented by E to WNW, NNW and NW oriented faults. The E to WNW oriented faults are small and build up the Gebel Qattamiya en echelon fault belt, whereas the faults trending NNW and NW establish a pervasive horst and graben structural style involving some rhomb-shape horsts as Gebel Qattamiya (GQRH), Gebel Um Reheiat (GURRH) and south Gebel Um Reheiat (SGURRH). Rock units of the Eocene succession and Oligocene sediments are well exposed and highly controlled by rift-related structures. Rifting was developed through two rift-phases; initial and major ones. The initial phase (a newly recognized phase in this contribution) has been occurred in Late Eocene (Priabonian), while the main phase was prevailing during Late Oligocene-Early Miocene time and is characterized by hydrothermal veins and basaltic eruptions. Continental transtension in the Cairo-Suez district, including the study area, was probably synchronous with a major tectonic stage (Pyrenean-Atlasic movement) of continental collision between African-Arabian and Eurasian plates in Late Eocene-Oligocene time. Field investigation suggests that the transfer of displacement (slip) from the Gulf of Suez proto-rift into the E-W oriented faults ''relays'' is an important mechanism, which helps to explain the current structural framework and tectonic evolution of the Cairo-Suez district. Reactivation of such faults with right-lateral divergent wrenching with NE-SW oriented extension deformed the Cairo-Suez district with several E-W oriented en echelon fault belts (e.g. Gebel Qattamiya fault belt in the study area). Thus the Cairo-Suez district represents an accommodation or transfer zone in northeastern Egypt, intercepting the ''far-field stresses'' from the Arabian-Nubian Shield, the Red

  8. Uma Visão do Universo Segundo um Grupo de Alunos do Ensino Médio de São Paulo

    NASA Astrophysics Data System (ADS)

    Elias, D. S.; Araújo, M.; Amaral, L. H.; Voelzke, M. R.; Araújo, M.

    2005-08-01

    A astronomia, embora seja uma ciência popular, com inúmeras descobertas de interesse público, ainda é apresentada desconsiderando-se os aspectos históricos e científicos relacionados ao seu desenvolvimento, sendo geralmente veiculada nos meios de comunicação de maneira pouco esclarecedora e não raro com imprecisões. Neste trabalho analisou-se a concepção de um grupo de estudantes de Ensino Médio sobre conceitos de astronomia, visando identificar sua visão de mundo a respeito do Universo, envolvendo idéias sobre espaço e tempo. Para issso, foi aplicado um questionário em três escolas da grande São Paulo em um espaço amostral de 270 alunos. Constatou-se que, embora o ensino de astronomia esteja previsto nos PCNEM, os resultados obtidos na pesquisa mostram que há grande deficiência no conhecimento dos temas investigados. Nesse sentido, verificou-se que apenas 20% dos alunos eram capazes de relacionar a sucessão das semanas com as fases da lua, enquanto 28% associaram as estações do ano à inclinação do eixo de rotação da Terra. Por outro lado, somente 23% dos alunos tinham noções das distâncias entre os objetos celestes próximos da Terra e 56% conseguiram relacionar o Big Bang com a origem do Universo. Finalmente, constatou-se que 37% reconheciam o ano-luz como uma unidade de distância e 60% reconheciam o Sol como sendo uma estrela. Apesar de 60% dos alunos indicarem que a escola é a principal fonte para aquisição dos conhecimentos de astronomia, conclui-se que seus conceitos nessa área ainda são inadequados, havendo necessidade de ampliação e aprimoramento da abordagem desses conteúdos nos ambientes escolares.

  9. User's manual (UM) for the enhanced logistics intratheater support tool (ELIST) software segment version 8.1.0.0 for solaris 7.

    SciTech Connect

    Dritz, K.

    2002-03-06

    This document is the User's Manual (UM) for the Enhanced Logistics Intratheater Support Tool (ELIST) Software Segment. It tells how to use the end-user and administrative features of the segment. The instructions in Sections 4.2.1, 5.3.1, and 5.3.2 for the end-user features (Run ELIST and Run ETEdit) only cover the launching of those features in the DII COE environment; full details on the operation of ELIST and ETEdit in any environment can be found in the documents listed in Section 2.1.3 and referenced elsewhere in this document. On the other hand, complete instructions for the administrative features (Add Map Data and Delete Map Data) are presented in Sections 4.2.2, 5.3.3, and 5.3.4 of this document.

  10. Um Projeto de Intervenção nos Espaços de Exposições do Planetário do Parque do Ibirapuera

    NASA Astrophysics Data System (ADS)

    Elias, D. S.; Amaral, L. H.; de Araújo, C. F., Jr.; Matsuura, O. T.; Voelzke, M. R.

    2005-08-01

    Cada vez mais a humanidade, em sua imensa maioria, está alheia às próprias conquistas. A insatisfação com esta realidade tem levado muitos pesquisadores, instituições, empresas e governos a procurar formas alternativas de acompanhar e transmitir todo este acervo científico cultural à sociedade, buscando a melhoria da qualidade da divulgação científica e contribuindo para o processo de cultura e alfabetização científica. Não há tempo nem espaço nos limitados planos curriculares do ensino médio e mesmo nos programas de ensino que propiciem a cultura científica e o acompanhamento do vertiginoso progresso científico e tecnológico atual. Neste sentido, a educação formal escolar precisa ser complementada ou acrescida de uma educação informal, extra-escolar, que possa oferecer à sociedade o que a escola não pode oferecer. A interação do público com museus, feiras de ciências, planetários, exposições científicas e/ou culturais é de grande importância para a aquisição e difusão de conhecimentos relacionados ao mundo científico. Reconhecidamente como um modelo de alfabetização científica esses ambientes promovem uma interação social capaz de propiciar de forma efetiva uma melhor relação ensino-aprendizagem com o público. Partindo desta realidade a Universidade Cruzeiro do Sul e a Escola Municipal de Astronomia (EMA) vêm desenvolvendo um projeto de intervenção no espaço em torno do Planetário do Parque do Ibirapuera com o objetivo de se implantar um ambiente de aprendizagem motivador e desafiador que promova a popularização de conteúdos relacionados à astronomia, astrofísica e cosmologia. Busca-se, também, a aproximação e interação do público com exposições que estão sendo implementadas no planetário. Considerando que se trata de um projeto de mestrado em fase inicial o objetivo do presente trabalho é apresentar a concepção básica e os critérios que estão sendo utilizados do ponto de vista pedag

  11. An Enhancement of 160um-derived Star-Formation Rates in Active Galaxies to z = 3.2 with the ZFOURGE Survey

    NASA Astrophysics Data System (ADS)

    Cowley, Michael; Spitler, L.

    2016-08-01

    ZFOURGE is a new imaging survey, which employs unique near-infrared medium- band filters designed to probe galaxy properties over the last 12 billion years. By supplementing the high-quality ZFOURGE galaxy catalogues with data in radio, X- ray, and infrared wavebands, we have studied the complex interplay between AGNs and their host galaxies to a time when the Universe was only 10-15% of its present age. I will report on our study to compare the 160-um derived star-formation rates in active and non-active galaxies and show that AGN hosts, over all redshifts, tend to exhibit an elevated average star-formation activity compared to their non-active counterparts.

  12. Validation of the A&D UM-211 device for office blood pressure measurement according to the European Society of Hypertension International Protocol revision 2010.

    PubMed

    Fania, Claudio; Albertini, Federica; Palatini, Paolo

    2017-10-01

    The aim of this study was to define the accuracy of UM-211, an automated oscillometric device for office use coupled to several cuffs for different arm sizes, according to the International Protocol of the European Society of Hypertension. The validation was performed in 33 individuals. Their mean age was 59.6±12.9 years, systolic blood pressure (BP) was 144.3±21.5 mmHg (range: 96-184 mmHg), diastolic BP was 86.8±18.5 mmHg (range: 48-124 mmHg), and arm circumference was 30.2±4.3 cm (range: 23-39 cm). Four sequential readings were taken by observers 1 and 2 using a double-headed stethoscope and a mercury sphygmomanometer, whereas three BP readings were taken by the supervisor using the test instrument. The differences between the readings provided by the device and the mean observer measurements were calculated. Therefore, each device measurement was compared with the previous and the next mean observer measurement. The validation results fulfilled all the 2010 European Society of Hypertension revision Protocol criteria for the general population and passed all validation grades. On average, the device overestimated systolic BP by 1.7±2.4 mmHg and diastolic BP by 1.7±2.5 mmHg. These data show that the UM-211 device coupled to several cuffs for different ranges of arm circumference met the requirements for validation according to the International Protocol and can be recommended for clinical use in the adult population. However, these results mainly apply to the use of the 22-32 and the 31-45 cm cuffs.

  13. Maternal and neonatal factors related to prematurity.

    PubMed

    Oliveira, Laura Leismann de; Gonçalves, Annelise de Carvalho; Costa, Juvenal Soares Dias da; Bonilha, Ana Lucia de Lourenzi

    2016-01-01

    ém-nascidos com 37 semanas ou mais. Os dados provieram dos registros de 19.457 nascimentos do município de Porto Alegre, no ano de 2012, no Sistema de Informações sobre Nascidos Vivos da Secretaria Municipal da Saúde. Foi realizada análise ajustada mediante Regressão Logística segundo modelo hierárquico. As variáveis estudadas foram alocadas em três níveis de hierarquia: variáveis sociodemográficas; história reprodutiva; fatores gestacionais e de nascimento. Foram alocados 767 casos e 1.534 controles, em um desenho de um caso para dois controles (1:2), mediante randomização simples. No modelo final, foi encontrada associação estatisticamente significante para prematuridade para as seguintes variáveis: idade materna menor que 19 anos (OR=1,32; IC 95%: 1,02 - 1,71) e maior que 34 anos (OR=1,39; IC 95%: 1,12 - 1,72); escolaridade materna inadequada para a idade (OR=2,11; IC 95%: 1,22 - 3,65); gravidez múltipla (OR=1,14; IC 95%: 1,01 - 1,29); cesariana (OR=1,15; IC 95%: 1,03 - 1,29); peso ao nascer menor a 2.500g (OR=4,04; IC 95%: 3,64 - 4,49); Índice de Apgar no 5° minuto de zero a três (OR=1,47; IC 95%: 1,12 - 1,91) e pré-natal inadequado (OR=1,18; IC 95%: 1,02 - 1,36). O presente estudo evidenciou as consequências mais imediatas da prematuridade para os recém-nascidos ao revelar sua associação com piores escores de Apgar e baixo peso ao nascimento. Mostrou como possíveis determinantes mais distais de prematuridade: idade materna, educação materna inadequada, gestação múltipla, pré-natal inadequado e realização de cesariana.

  14. An investigation of the adsorption characteristics of 5 prime ATP and 5 prime AMP onto the surface of CaSO sub 4 x 2H sub 2 O

    NASA Technical Reports Server (NTRS)

    Calderon, J.; Sweeney, M. A.

    1986-01-01

    A model has been proposed (Lahev and Chans, 1982) in which solid surfaces can act as a site for catalytic activity of condensation reactions for certain biomolecules. From this model, the adsorption characteristics of 5'ATP and 5'AMP onto the surface of CaSO4 2H2O was chosen for study. It has been proven that 5'ATP and 5'AMP do adsorb onto the surface of CaSO4. Studies were then made to determine the dependence of adsorption versus time, concentration, ionic strength and pH. It was found that the adsorption of the nucleotides is highly pH dependent, primarily determined by the phosphate acid groups of the nucleic acid molecule. From this investigation, the data obtained are discussed in relation to the model for the prebiotic earth.

  15. Aspergilosis cervical con diseminación al sistema nervioso central. Presentación de un caso y revisión de bibliografía

    PubMed Central

    Vergara, Guillermo Enrique; Roura, Natalia; del Castillo, Marcelo; Mora, Andrea; Alcorta, Santiago Condomi; Mormandi, Rubén; Cervio, Andrés; Salvat, Jorge

    2015-01-01

    Introducción: la Aspergilosis Invasiva (AI) del Sistema Nervioso Central (SNC) es infrecuente y ocurre generalmente en pacientes inmunocomprometidos. Puede presentarse con cuadros de meningitis, aneurismas micóticos, infartos o abscesos. Es una infección con pronóstico reservado y puede afectar el SNC de forma primaria o secundaria a partir de un foco que se disemina por vía hematógena. Presentamos el caso de un paciente con AI con invasión primaria a nivel óseo y diseminación posterior al cerebro. Caso clínico: Paciente masculino de 25 años con diagnóstico de leucemia linfática aguda en tratamiento quimioterápico que presentó neumonitis por metotrexate por lo que inicia tratamiento con corticoides. Posteriormente agregó cervicalgia y con el diagnóstico de osteomielitis cervical se realiza punción bajo tomografía computada (TC) sin aislarse gérmenes. Se colocó Halo Vest e inició tratamiento antibiótico empírico. Posteriormente presentó afasia de expresión secundaria a lesión frontal izquierda. Se realizó evacuación de absceso cerebral aislando A. fumigatus. El tratamiento antibiótico específico posterior permitió una buena respuesta clínica y radiológica. Conclusión: La presencia de lesiones en el SNC de pacientes inmunocomprometidos debe incluir a las micosis como diagnóstico diferencial. La evacuación quirúrgica permite llegar rápidamente al diagnóstico mejorando la respuesta posterior al tratamiento antibiótico. Para evaluar la respuesta terapéutica y posibles recaídas se debe realizar un seguimiento periódico clínico radiológico. Palabras clave: Aspergilosis cerebral; Aspergilosis cervical; Aspergilosis invasiva; Voriconazol. PMID:26600985

  16. Exposure to classroom sound pressure level among dance teachers in Porto Alegre (RS)

    PubMed Central

    Nehring, Cristiane; Bauer, Magda Aline; Teixeira, Adriane Ribeiro

    2013-01-01

    Summary Introduction: Dance teachers are exposed to high sound intensities. Aim: To verify the sound intensity of music used by dance teachers during classes. Method: This was a transversal and prospective study. Dance teachers were evaluated with a sociodemographic questionnaire, and sound intensity level measurements were taken at the beginning, middle, and end of dance classes. Results: The sample comprised 35 teachers (average age, 31.8 years). The duration of their career as dance teachers was 1–37 years; they worked daily for approximately 1–10 h. Among the classes followed, there were 15 (42.85%) classical ballet classes, 4 (11.42%) tap dancing lessons, 5 (14.28%) jazz dance classes, 2 (5.71) Arab dance lessons, 6 (17.14%) street dance classes, and 3 (8.57%) ballroom dancing lessons. The average values observed at the beginning, middle, and end of the classes were 80.91 dB (A), 83.22 dB (A), and 85.19 dB (A), respectively. The music played in the street dance classes exposed teachers to the highest sound intensity. Conclusion: The average level of sound intensity of the dance classes in this study was either below or equal to the limit considered harmful for hearing health. Analysis of different class types showed that the sound densities of street, ballroom, and tap dance classes were above the recommended limits. PMID:25991989

  17. [Consumption of drugs in over 65 in Porto (Portugal) and risk of potentially inappropriate medication prescribing].

    PubMed

    Eiras, Andreia; Teixeira, M Antonieta; González-Montalvo, Juan I; Castell, Maria-Victoria; Queipo, Rocio; Otero, Ángel

    2016-02-01

    To determine medication consumption in the older people from a central area of Oporto; determine the prevalence of prescription of Potentially Inappropriate Medication and to analyse the polypharmacy and other important connected factors. Cross-sectional study with a sample of 747 patients older than 64 years, who were attended in a Primary care health centre: USF Rainha D. Amélia, Oporto, Portugal. identification of all medication prescribed from electronic registers. Polypharmacy was considered more than 5 medication prescribed and Potential Inappropriate Medication was identified by Beers criteria 2012. The socio-demographic factors, diagnosis and health care services use were registered too. Logistic regression analysis was used to determine the association between co-variables. There were 89.2% (95%CI: 87.6-92.0) of the studied population with at least one prescription. The polypharmacy was present at 59.2% (95%CI: 55.7-62.7) of people. The Potential Inappropriate Medication was present in 37.0% (95%CI: 33.5-40.5) of the cases. The Potential Inappropriate Medication was related with increasing age [OR=1.02 (95%CI: 1.00-1.05)], polypharmacy [OR=4.45 (95%CI: 3.12-6.36)], and be diagnosed with depression/anxiety [OR=2.18 (95%CI: 1.36-3.51)] and/or arthrosis [OR=1.64 (95%CI: 1.11-2.42)]. The rate of medication prescription, polypharmacy and the prescription of Potentially Inappropriate Medication are very high in Portuguese population studied. The polypharmacy is the most important factor related with this potential inappropriate medication. The physician need to have carefully with prescription of the anxiolytic and anti-inflammatory pain drugs. Copyright © 2014 Elsevier España, S.L.U. All rights reserved.

  18. Mutational screening in genes related with porto-pulmonary hypertension: An analysis of 6 cases.

    PubMed

    Pousada, Guillermo; Baloira, Adolfo; Valverde, Diana

    2017-04-07

    Portopulmonary hypertension (PPH) is a rare disease with a low incidence and without a clearly-identified genetic component. The aim of this work was to check genes and genetic modifiers related to pulmonary arterial hypertension in patients with PPH in order to clarify the molecular basis of the pathology. We selected a total of 6 patients with PPH and amplified the exonic regions and intronic flanking regions of the relevant genes and regions of interest of the genetic modifiers. Six patients diagnosed with PPH were analyzed and compared to 55 healthy individuals. Potentially-pathogenic mutations were identified in the analyzed genes of 5 patients. None of these mutations, which are highly conserved throughout evolution, were detected in the control patients nor different databases analyzed (1000 Genomes, ExAC and DECIPHER). After analyzing for genetic modifiers, we found different variations that could favor the onset of the disease. The genetic analysis carried out in this small cohort of patients with PPH revealed a large number of mutations, with the ENG gene showing the greatest mutational frequency. Copyright © 2017 Elsevier España, S.L.U. All rights reserved.

  19. Omental vein catheter thrombolysis for acute porto-mesenteric vein thrombosis.

    PubMed

    Fonseca, Annabelle L; Cleary, Muriel A; Cholewczynski, Walter; Sumpio, Bauer E; Atweh, Nabil A

    2013-05-01

    Mesenteric venous thrombosis (MVT) is an uncommon clinical condition with potential high morbidity. We report here a patient who presented with acute-onset MVT and bowel infarction, which was successfully ameliorated with intramesenteric vein thrombolytic therapy.

  20. Can Critical Democracy Last? Porto Alegre and the Struggle over "Thick" Democracy in Education

    ERIC Educational Resources Information Center

    Gandin, Luis Armando; Apple, Michael W.

    2012-01-01

    A fundamental question lies at the heart of the issues surrounding the connections between educational projects and larger socially critical movements and projects. What would a socially just education system look like? In answering this, one place immediately comes to mind, a locale where this question was answered through real transformations:…

  1. New Schools, New Knowledge, New Teachers: Creating the Citizen School in Porto Alegre, Brazil

    ERIC Educational Resources Information Center

    Gandin, Luis Armando; Apple, Michael W.

    2004-01-01

    This article examines the possibility, and reality, of counter-hegemonic policies and practices. These policies and practices call forth a very different vision of the place of the school in society and of curricula, teaching, and evaluation. They also present a serious challenge to teacher education, since they require the education of a…

  2. Embolization of congenital intrahepatic porto-systemic shunt by n-butyl cyanoacrylate.

    PubMed

    Gupta, Vivek; Kalra, Naveen; Vyas, Sameer; Sodhi, K S; Thapa, B R; Khandelwal, N

    2009-10-01

    Congenital intrahepatic portosystemic venous shunt (IHPSVS) is rare vascular anomaly. We present one case of a 14-month male child who presented with global developmental delay. Child had high ammonia levels with low glutamine and high bile salts on the previous investigations and had history of neonatal seizures since day 13 of life. On admission, serum ammonia levels were elevated to 112micromol/L. Other laboratory investigations including liver and renal function test, and electrolytes were normal. He was, diagnosed to have IHPSVS on the basis of Doppler and CT, and treated by embolization with n-butyl cyanoacrylate (glue). A brief review of diagnostic modalities and endovascular management for the IHPSVS is presented including the present case.

  3. [Circadian energy intake evaluation of a group of office workers in Porto].

    PubMed

    Setas, Cristiana D; Pinhão, Sílvia C; Carvalho, Davide M; Correia, Flora C; Medina, José L

    2004-01-01

    The importance of food in health promotion and disease prevention is well known. The aims of our study were to evaluate the daily energy intake of an adult group; to study the association of a 24 hour recall (R24h) and a Food Frequency Questionnaire (FFQ); to analyse energy intake variation with obesity and to verify if our sample had an ingestion according to DRI's. We studied a convenience sample of Portuguese adult population of 154 office workers (121 women), with a mean of ages of 44.2 +/- 12.1 years. We used a self administered FFQ and a R24h to evaluate food habits. Middle number of meals was 4.8 +/- 1.0 meals (breakfast, lunch and dinner were the most frequent). Middle daily ingestion was 1908 +/- 559 kcal. Men had a superior energy intake at all meals, except at afternoon snack and supper. We did not find any relation between BMI and food intake, BMI is only related with age. We compared our sample ingestion with DRI's and verified that vitamins B1, B2, B12, B6, C, niacin, Fe and P, were totally reached, and the inverse was obtained in Zn, folate, vitamin D and E, pantothenic acid and biotin. We conclude that our sample ingestion of protein is higher than the recommended, carbohydrates is less consume than the recommended and only recommendations of fat and alcohol consumption were in agreement with WHO recommendations.

  4. Polycyclic aromatic hydrocarbons in atmospheric particles in the metropolitan area of Porto Alegre, Brazil

    NASA Astrophysics Data System (ADS)

    Dallarosa, Juliana Braga; Mônego, Josiane Garcia; Teixeira, Elba Calesso; Stefens, Josemar Luis; Wiegand, Flávio

    The aim of the present study is to identify and quantify the main sources of polycyclic aromatic hydrocarbons (PAHs) associated with aerosols (PM 10) collected at three different sampling stations: 8° Distrito, CEASA and Charqueadas. The samples were collected between November 2001 and November 2002, and the concentrations of 16 major PAHs were determined according to EPA. The filters containing particulate matter were extracted with dichloromethane in Soxhlet and the extracts were later analysed in a gaseous chromatograph coupled to a mass spectrometer (GS/MS). The average concentrations of PAHs ranged between 0.04 and 2.30 ng m -3. The analysis of principal components was applied to the chemical and meteorological variables in order to facilitate the identification of sources of PAHs emission into the atmospheric particulate. The study identified the following sources of PAHs: vehicular emissions, such as diesel oil, petrol, alcohol, and kerosene; industrial emissions, like lubricating oils; emissions from hospital waste burning, and coal burning at power plants.

  5. Can Critical Democracy Last? Porto Alegre and the Struggle over "Thick" Democracy in Education

    ERIC Educational Resources Information Center

    Gandin, Luis Armando; Apple, Michael W.

    2012-01-01

    A fundamental question lies at the heart of the issues surrounding the connections between educational projects and larger socially critical movements and projects. What would a socially just education system look like? In answering this, one place immediately comes to mind, a locale where this question was answered through real transformations:…

  6. Briefing to University of Porto on NASA Airborne Science Program and Ames UAVs

    NASA Technical Reports Server (NTRS)

    Fladeland, Matthew

    2015-01-01

    NASA Ames is exploring a partnership with the University of Portugal to jointly develop and test new autonomous vehicle technologies. As part of the discussions I will be briefing the University of Portugal faculty on the NASA Airborne Science Program (ASP) and associated activities at NASA Ames Research Center. The presentation will communicate the requirements that drive the program, the assets available to NASA researchers, and discuss research projects that have used unmanned aircraft systems including MIZOPEX, Surprise Valley, and Florida Keys Coral Reef assessment. Other topics will include the SIERRA and Dragon Eye UAV projects operated at Ames.

  7. Determination of self attenuation coefficient and relative TL efficiency of CaSO 4 :Dy, LiF:Mg,Cu,P and LiF:Mg,Ti TLDs - An alternate approach

    NASA Astrophysics Data System (ADS)

    Bakshi, A. K.; Chatterjee, S.; Palani Selvam, T.; Joshi, V. J.; Chougaonkar, M. P.

    2011-10-01

    Self attenuation of TL and relative TL efficiency of polytetra fluoro ethylene (PTFE) embedded CaSO 4:Dy disc, LiF:Mg,Ti (MTS) disc and LiF:Mg,Cu,P (MCP-N) chip were determined in the present study for photons of energy 10-34 keV. The relative TL efficiency was determined using an alternative approach in which ratio of experimental response and corrected theoretical response was used instead of measuring the absolute TL emission in photon counting mode. For CaSO 4:Dy disc, it was found that with increasing the proportion of CaSO 4:Dy phosphor in the disc, the light attenuation coefficient increases. The light attenuation coefficient of MTS disc and MCP-N chip was found to be 23.4 and 45.5 cm -1, respectively. The relative TL efficiency in the photon energy range of 10-34 keV for MTS discs and MCP-N chips, evaluated in the present study matches well with the reported values in the literature.

  8. Otimização de procedimento de manobra para indução de reentrada de um satélite retornável

    NASA Astrophysics Data System (ADS)

    Schulz, W.; Suarez, M.

    2003-08-01

    Veículos espaciais que retornam à Terra passam por regimes de velocidade e condições de vôo distintos. Estas diferenças dificultam sua concepção aerodinâmica e o planejamento de seu retorno. A partir de uma proposta de um veículo orbital retornável (satélite SARA, em desenvolvimento no IAE/CTA) para realização de experimentos científicos e tecnológicos em ambiente de baixa gravidade, surge a necessidade de realizarem-se estudos considerando-se os aspectos relativos à sua aerodinâmica. Após o lançamento, o veículo deve permanecer em órbita pelo tempo necessário para a condução de experimentos, sendo depois direcionado à Terra e recuperado em solo. A concepção aerodinâmica é de importância para o vôo em suas diversas fases e deve considerar aspectos relativos à estabilização Aerodinâmica e ao arrasto atmosférico, sendo este último de importância crucial na análise do aquecimento a ser enfrentado. A manobra de retorno inclui considerações sobre as condições atmosféricas e dinâmica de reentrada, devendo ser calculada de forma mais precisa possível. O trabalho proposto avalia estudos da dinâmica de vôo de um satélite recuperável considerando aspectos relativos à determinação orbital com GPS, técnica utilizada com sucesso na CONAE, e seu comportamento aerodinâmico em vôo balístico de retorno, com ênfase em sua fase de reentrada atmosférica. Busca-se otimizar a manobra de reentrada de tal forma que a utilização do sistema GPS garanta minimizar a área de impacto com o solo.

  9. Thermoluminescence, ESR and x-ray diffraction studies of CaSO4 : Dy phosphor subjected to post preparation high temperature thermal treatment

    NASA Astrophysics Data System (ADS)

    Bakshi, A. K.; Patwe, S. J.; Bhide, M. K.; Sanyal, B.; Natarajan, V.; Tyagi, A. K.; Kher, R. K.

    2008-01-01

    Thermoluminescence (TL), electron spin resonance (ESR) and x ray diffraction studies of CaSO4 : Dy phosphor subjected to post preparation high temperature treatment were carried out. Analysis of the TL glow curve indicated that the dosimetric glow peak at 240 °C reduces, whereas the low temperature satellite peak increases with the increase in the annealing temperature in the range 650-1000 °C. The influence of the annealing atmosphere on the TL glow curve structure was also observed. Reduction of the photoluminescence intensity of the annealed phosphor indicated that the environment of Dy3+ ions might have undergone some change due to high temperature treatment. Reduction in the ESR signal intensity corresponding to O_{3}^{-} and SO_{3}^{-} radicals was observed initially with the increase in the annealing temperaure; subsequently their intensity increased with temperature. Signals due to the SO_{4}^{-} radical vanished, when the phosphor was annealed beyond 800 °C. A signal corresponding to SH2- radicals was also observed in the ESR spectra for samples subjected to annealing in the temperature regime 800-1000 °C. XRD of the in situ annealed phosphor showed a change in the unit cell parameters. An endothermic peak at 860 °C in the DTA spectrum was observed.

  10. Gypsum (CaSO4·2H2O) Scaling on Polybenzimidazole and Cellulose Acetate Hollow Fiber Membranes under Forward Osmosis

    PubMed Central

    Chen, Si Cong; Su, Jincai; Fu, Feng-Jiang; Mi, Baoxia; Chung, Tai-Shung

    2013-01-01

    We have examined the gypsum (CaSO4·2H2O) scaling phenomena on membranes with different physicochemical properties in forward osmosis (FO) processes. Three hollow fiber membranes made of (1) cellulose acetate (CA), (2) polybenzimidazole (PBI)/polyethersulfone (PES) and (3) PBI-polyhedral oligomeric silsesquioxane (POSS)/polyacrylonitrile (PAN) were studied. For the first time in FO processes, we have found that surface ionic interactions dominate gypsum scaling on the membrane surface. A 70% flux reduction was observed on negatively charged CA and PBI membrane surfaces, due to strong attractive forces. The PBI membrane surface also showed a slightly positive charge at a low pH value of 3 and exhibited a 30% flux reduction. The atomic force microscopy (AFM) force measurements confirmed a strong repulsive force between gypsum and PBI at a pH value of 3. The newly developed PBI-POSS/PAN membrane had ridge morphology and a contact angle of 51.42° ± 14.85° after the addition of hydrophilic POSS nanoparticles and 3 min thermal treatment at 95 °C. Minimal scaling and an only 1.3% flux reduction were observed at a pH value of 3. Such a ridge structure may reduce scaling by not providing a locally flat surface to the crystallite at a pH value of 3; thus, gypsum would be easily washed away from the surface. PMID:24957062

  11. Effects of the size and content of protein aggregates on the rheological and structural properties of soy protein isolate emulsion gels induced by CaSO4.

    PubMed

    Wang, Xufeng; He, Zhiyong; Zeng, Maomao; Qin, Fang; Adhikari, Benu; Chen, Jie

    2017-04-15

    The effects of the size and content of soy protein isolate (SPI) aggregates on the rheological and textural properties of CaSO4-induced SPI emulsion gels were investigated. Considerable differences in the rheological, water-holding, and micro-structural properties were observed. The gels with larger and/or more SPI aggregates showed substantial increase in the elastic modulus and had lower gelation temperatures. Creep data suggested that the size of the SPI aggregates contributed more to the elastic modulus, whereas the increase of aggregate content enhanced the elastic modulus and viscous component of the gels. The water-holding capacity was markedly enhanced (p<0.05) with the increase in both the size and content of SPI aggregates. Confocal laser scanning microscopy and scanning electron microscopy showed that larger and/or more SPI aggregates resulted in more homogeneous networks with smaller oil droplets. These insights provide important information for the product development in relation to soy protein-stabilized emulsions and emulsion gels. Copyright © 2016. Published by Elsevier Ltd.

  12. Descompresión microvascular en neuralgia del trigémino: Reporte de 36 casos y revisión de la literatura

    PubMed Central

    Campero, Alvaro; Ajler, Pablo; Campero, Abraham Agustín

    2014-01-01

    Objetivo: El propósito del presente trabajo es presentar los resultados de 36 pacientes con diagnóstico de neuralgia del trigémino (NT), en los cuales se realizó una descompresión microvascular (DMV). Material y Método: Desde junio de 2005 a mayo de 2012, 36 pacientes con diagnóstico de NT fueron operados por el primer autor (AC), realizando una DMV. Se evaluó: Edad, sexo, tiempo de sintomatología previo a la cirugía, hallazgos intraoperatorios (a través de los videos quirúrgicos), y resultados postoperatorios. Resultados: De los 36 pacientes operados, 25 fueron mujeres y 11 varones. El promedio de edad fue de 48 años. El seguimiento postoperatorio fue en promedio de 38 meses. De los 36 pacientes, 32 (88%) evolucionaron sin dolor hasta la fecha. De los 4 casos con recurrencia de dolor, en dos pacientes se observó como hallazgo intraoperatorio un conflicto venoso. Conclusión: La DMV como tratamiento de la NT es un procedimiento efectivo y seguro. El hallazgo intraoperatorio de una “compresión” venosa podría indicar una evolución postoperatoria desfavorable. PMID:25379343

  13. Shock induced reaction in Chicxulub target materials (CaSO4 and SiO2) and their relation to extinctions

    NASA Astrophysics Data System (ADS)

    Chen, Guangqing; Ahrens, Thomas J.

    1993-03-01

    The global platinum element rich layer, the presence of shocked quartz grains (in some cases with stishovite), and the observation of a tektite-rich layer, precisely at the K-T boundary, are the three major arguments for the extinction bolide impact hypothesis of Alvarez et al. Tektites (spherules) from Beloc in Haiti and Mimbral in Mexico received particular interest because of their geological proximity to the Chicxulub impact structure, which is a leading candidate for at least one of the K-T impact craters. Although in most localities the original glass has weathered to clay minerals, some shock-induced glass is found in outcrops and drill cores which is used for Ar-38/Ar-39 dating. The glassy tektites were found to be chemically similar and coeval at 65.0 Ma with Chicxulub melt rock. Two kinds of K-T spherules were discovered: (1) a silic black glass; and (2) a yellow glass, enriched in Ca, Mg, and S. The high sulfur content of the glass and the abundance of anhydrite (CaSO4) in the carbonate-evaporite sequence observed in Drill Holes Y-1 and Y-2 at Chicxulub prompted studies of calcium sulfate devolatization. Further discussion of our experiments is presented.

  14. Shock induced reaction in Chicxulub target materials (CaSO4 and SiO2) and their relation to extinctions

    NASA Technical Reports Server (NTRS)

    Chen, Guangqing; Ahrens, Thomas J.

    1993-01-01

    The global platinum element rich layer, the presence of shocked quartz grains (in some cases with stishovite), and the observation of a tektite-rich layer, precisely at the K-T boundary, are the three major arguments for the extinction bolide impact hypothesis of Alvarez et al. Tektites (spherules) from Beloc in Haiti and Mimbral in Mexico received particular interest because of their geological proximity to the Chicxulub impact structure, which is a leading candidate for at least one of the K-T impact craters. Although in most localities the original glass has weathered to clay minerals, some shock-induced glass is found in outcrops and drill cores which is used for Ar-38/Ar-39 dating. The glassy tektites were found to be chemically similar and coeval at 65.0 Ma with Chicxulub melt rock. Two kinds of K-T spherules were discovered: (1) a silic black glass; and (2) a yellow glass, enriched in Ca, Mg, and S. The high sulfur content of the glass and the abundance of anhydrite (CaSO4) in the carbonate-evaporite sequence observed in Drill Holes Y-1 and Y-2 at Chicxulub prompted studies of calcium sulfate devolatization. Further discussion of our experiments is presented.

  15. Microwave-promoted pure host phase for red emission CaS:Eu2+ phosphor from single CaSO4 precursor and the photoluminescence property

    NASA Astrophysics Data System (ADS)

    Ma, Jian; Lu, Qi-Fei; Wang, Yan-Ze; Lu, Zhi-Juan; Sun, Liang; Dong, Xiao-Fei; Wang, Da-Jian

    2014-08-01

    We report a novel approach to obtaining a classical blue-green excitable CaS:Eu2+ phosphor with desired red emission by microwave (MW) firing procedure in the absence of adding elemental sulphur. The disturbing effect of MW electromagnetic field on decomposition of CaSO4 into CaS activated by europium is distinctly observed to give pure host phase without adding any elemental sulphur and carbon. The host phase evolution is observed to be highly dependent on the variation of applied MW power from X-ray diffraction (XRD) patterns and the corresponding photoluminescence (PL), and a maximum PL intensity at 1100 W of MW power is acquired for the obtained purer host phase. The non-thermal and non-equilibrium effects by MW are revealed to correlate with the interaction between polar structure of the host and applied electromagnetic field. The results demonstrate an optional procedure to prepare this red-emitting phosphor in an effective, environment-friendly and scalable approach for phosphor production in the application of bio-illumination for plant cultivation and artificial photosynthesis.

  16. On the use of overtone and combination bands for the analysis of the CaSO4-H2O system by mid-infrared reflection spectroscopy.

    PubMed

    Rosi, Francesca; Daveri, Alessia; Doherty, Brenda; Nazzareni, Sabrina; Brunetti, Brunetto G; Sgamellotti, Antonio; Miliani, Costanza

    2010-08-01

    With the aim of characterizing ground preparations of paintings by infrared reflection spectroscopy, the CaSO(4)-H(2)O system (gypsum/bassanite/anhydrite) has been re-investigated, evaluating and assigning the SO(4)(2-) and OH overtone and combination bands, respectively, in the ranges 1900-2700 cm(-1) and 5000-6000 cm(-1) resulting from reflection and high concentration transmission spectra. The second-order modes have been proven to be highly specific, reliable, and less affected by overlap with bands of organic binders and can hence be exploited for the identification of the sulfate hydration phase using infrared (IR) reflection spectroscopy. Subsequently, the characterization and identification of hydration phases in unknown sulfate-based ground preparations on authentic artworks have been carried out noninvasively by fiber-optic reflection IR spectroscopy and on cross-sections by infrared reflection micro-spectroscopy. The spectroscopic data collected both on standards and artworks have been cross-validated by X-ray diffraction.

  17. Gypsum (CaSO4·2H2O) Scaling on Polybenzimidazole and Cellulose Acetate Hollow Fiber Membranes under Forward Osmosis.

    PubMed

    Chen, Si Cong; Su, Jincai; Fu, Feng-Jiang; Mi, Baoxia; Chung, Tai-Shung

    2013-11-08

    We have examined the gypsum (CaSO4·2H2O) scaling phenomena on membranes with different physicochemical properties in forward osmosis (FO) processes. Three hollow fiber membranes made of (1) cellulose acetate (CA), (2) polybenzimidazole (PBI)/polyethersulfone (PES) and (3) PBI-polyhedral oligomeric silsesquioxane (POSS)/polyacrylonitrile (PAN) were studied. For the first time in FO processes, we have found that surface ionic interactions dominate gypsum scaling on the membrane surface. A 70% flux reduction was observed on negatively charged CA and PBI membrane surfaces, due to strong attractive forces. The PBI membrane surface also showed a slightly positive charge at a low pH value of 3 and exhibited a 30% flux reduction. The atomic force microscopy (AFM) force measurements confirmed a strong repulsive force between gypsum and PBI at a pH value of 3. The newly developed PBI-POSS/PAN membrane had ridge morphology and a contact angle of 51.42° ± 14.85° after the addition of hydrophilic POSS nanoparticles and 3 min thermal treatment at 95 °C. Minimal scaling and an only 1.3% flux reduction were observed at a pH value of 3. Such a ridge structure may reduce scaling by not providing a locally flat surface to the crystallite at a pH value of 3; thus, gypsum would be easily washed away from the surface.

  18. Development of a technique for improving coefficient of variation of CaSO4:Dy teflon-based TLD personnel monitoring system in low-dose region.

    PubMed

    Pradhan, S M; Sneha, C; Sahai, M K; Chougaonkar, M P; Babu, D A R

    2015-12-01

    In view of the importance of zero-dose background (null signal) in influencing the coefficient of variation in low-dose region, a technique for the estimation of the same from composite (gross) signal is developed for CaSO4:Dy-based personnel monitoring system being used in India. The technique is based on simple analysis of glow curves (GCs) of unexposed and exposed dosemeters, evolution of trend/model for the zero-dose curves, generation of simulation protocol for individual zero-dose curves, establishment of characteristics of GCs of exposed dosemeters and finally preparation of an algorithm to segregate the components from composite signal. The technique offers the separation of real-time background and gives superior results over other method of approximation of the background. The results also prove efficiency of the empirical trending and simulation protocol of background GCs. The proposed technique can be implemented in routine monitoring without any extra man hours and reader time.

  19. Project UM-HAUL (UnManned Heavy pAyload Unloader and Lander): The design of a reusable lunar lander with an independent cargo unloader

    NASA Technical Reports Server (NTRS)

    1991-01-01

    Project UM-Haul is the preliminary design of a reusable lunar transportation vehicle that travels between a lunar parking orbit and the lunar surface. This vehicle is an indispensible link in the overall task of establishing a lunar base as defined by the NASA Space Exploration Initiative. The response to this need consists of two independent vehicles: a lander and an unloader. The system can navigate and unload itself with a minimum amount of human intervention. The design addresses structural analysis, propulsion, power, controls, communications, payload handling and orbital operations. The Lander has the capacity to decend from low lunar orbit (LLO) to the lunar surface carrying a 7000 kg payload, plus the unloader, plus propellant for ascent to LLO. The Lander employs the Unloader by way of a motorized ramp. The Unloader is a terrain vehicle capable of carrying cargoes of 8,500 kg mass and employs a lift system to lower payloads to the ground. The system can perform ten missions before requiring major servicing.

  20. The genus Aphidura (Hemiptera, Aphididae) in the collection of the Muséum national d’Histoire naturelle of Paris, with six new species

    PubMed Central

    Nieto Nafría, Juan-Manuel; Mier Durante, Milagros-Pilar; Remaudière, Georges

    2013-01-01

    Abstract Specimens were studied of 65 samples of the genus Aphidura (Aphididae, Aphidinae, Macrosiphini) from the collection of the Muséum national d’Histoire naturelle (Paris). The possible synonymies of three pairs of species are discussed. New aphid host plant relationships are reported for Aphidura bozhkoae, Aphidura delmasi, Aphidura ornata, Aphidura pannonica and Aphidura picta; this last species is recorded for first time from Afghanistan. The record of Aphidura pujoli from Pakistan is refuted. The fundatrices, oviparous females and males of Aphidura delmasi are described. Six new species are established: Aphidura gallica sp. n. and Aphidura amphorosiphon sp. n. from specimens caught on species of Silene (Caryophyllaceae) from France and Iran, respectively, Aphidura pakistanensis sp. n., Aphidura graeca sp. n. and Aphidura urmiensis sp. n. from specimens caught on species of Dianthus, Gypsophila and Spergula (Caryophyllaceae) from Pakistan, Greece and Iran, respectively, and Aphidura iranensis sp. n. from specimens caught on Prunus sp. from Iran. Modifications are made to the keys by Blackman and Eastop to aphids living on Dianthus, Gypsophyla, Silene, Spergula and Prinsepia and Prunus (Rosaceae). An identification key to apterous viviparous females of species of Aphidura is also provided. PMID:23950674

  1. The genus Aphidura (Hemiptera, Aphididae) in the collection of the Muséum national d'Histoire naturelle of Paris, with six new species.

    PubMed

    Nieto Nafría, Juan-Manuel; Mier Durante, Milagros-Pilar; Remaudière, Georges

    2013-01-01

    Specimens were studied of 65 samples of the genus Aphidura (Aphididae, Aphidinae, Macrosiphini) from the collection of the Muséum national d'Histoire naturelle (Paris). The possible synonymies of three pairs of species are discussed. New aphid host plant relationships are reported for Aphidura bozhkoae, Aphidura delmasi, Aphidura ornata, Aphidura pannonica and Aphidura picta; this last species is recorded for first time from Afghanistan. The record of Aphidura pujoli from Pakistan is refuted. The fundatrices, oviparous females and males of Aphidura delmasi are described. Six new species are established: Aphidura gallica sp. n. and Aphidura amphorosiphon sp. n. from specimens caught on species of Silene (Caryophyllaceae) from France and Iran, respectively, Aphidura pakistanensis sp. n., Aphidura graeca sp. n. and Aphidura urmiensis sp. n. from specimens caught on species of Dianthus, Gypsophila and Spergula (Caryophyllaceae) from Pakistan, Greece and Iran, respectively, and Aphidura iranensis sp. n. from specimens caught on Prunus sp. from Iran. Modifications are made to the keys by Blackman and Eastop to aphids living on Dianthus, Gypsophyla, Silene, Spergula and Prinsepia and Prunus (Rosaceae). An identification key to apterous viviparous females of species of Aphidura is also provided.

  2. VizieR Online Data Catalog: Very Low-Luminosity Objects (VeLLOs) from 1.25-850um (Kim+, 2016)

    NASA Astrophysics Data System (ADS)

    Kim, M.-R.; Lee, C. W.; Dunham, M. M.; Evans, N. J., II; Kim, G.; Allen, L. E.

    2016-10-01

    The Spitzer Gould Belt Survey (GBS) is a project to survey about 21 square degrees of 11 nearby molecular clouds at 3.6-160um to provide a census of star formation in nearby large clouds (P.I. L. Allen). Spitzer has mapped a total of 11 molecular clouds, CMC, Chamaeleon I, Chamaeleon III, Musca, Lupus V, Lupus VI, Ophiuchus North, Aquila, CrA, Cepheus, and IC 5146 with the IRAC and MIPS between 2004 March and 2008 October. We utilized the data provided by the c2d/GBS projects (Evans et al. 2009, J/ApJS/181/321; Dunham et al. 2015, J/ApJS/220/11). There are two cloud complexes which were not listed in the c2d/GBS projects, but observed by other projects, the Taurus molecular clouds and the Orion molecular clouds. The Taurus molecular clouds have been observed over an area of ~44 square degrees by one of the GTO programs (P.I. D. Padgett) with the IRAC and the MIPS instruments. The Orion molecular clouds have been surveyed in ~9°2 area by Spitzer (P.I. T. Megeath). See section 2.1 for further details. Complementary archive infrared data were retrieved from 2MASS and Herschel PACS and SPIRE and JCMT SCUBA-2; see section 2.2. We observed our sources with the N2H+(1-0) line with the Korean Very Long Baseline Interferometry Network (KVN) 21m radio telescopes from 2011 October to 2016 May for the northern hemisphere sources, and the Mopra 22m telescope in 2012 April for the southern hemisphere sources. See section 2.3 for further explanations. (8 data files).

  3. Espectroscopia multi-objeto e imageamento de Abell 586 com GMOS - o estado dinâmico de um aglomerado de galáxias com arcos gravitacionais

    NASA Astrophysics Data System (ADS)

    Cypriano, E. S.; Sodrã©, L., Jr.; Kneib, J.-P.; Campusano, L.

    2003-08-01

    Nesse trabalho é apresentado um estudo do conteúdo de massa do aglomerado de galáxias A586 (z = 0.171) bem como sua distribuição espacial. Isso foi feito a partir de dados de espectroscopia multi-objeto e imageamento obtidos com o instrumento GMOS acoplado ao telescópio Gemini-Norte. A massa desse aglomerado foi estudada a partir da posição dos seus arcos gravitacionais (lentes fortes), da medida estatística da distorção na forma das galáxias de fundo (lentes fracas) e através da dispersão de velocidades de uma amostra de cerca de 30 galáxias pertencentes ao aglomerado (teorema do virial). Os dois primeiros métodos não dependem do estado dinâmico do aglomerado, enquanto que o terceiro sim. Desse modo, comparando seus resultados pode-se estimar o grau de relaxamento desse sistema. Dados de raios X presentes na literatura também serão incluídos nessa análise. Nossos resultados preliminares a partir das técnicas de lentes fracas, mostram que, supondo que a distribuição de massa desse aglomerado seja a de uma esfera isotérmica, espera-se que ele apresente uma dispersão de velocidades de 1330+/-78 km s-1, em contradicao com medidas similares feitas por Dahle et al. 2002 que encontram valores tão altos quanto 1680 km s-1. Já o estudo dinâmico resultou numa dispersão de velocidades de ~950 km s-1.

  4. Effect of chronic treatment with bovine recombinant growth hormone on cardiac dysfunction and lesion progression in UM-X7.1 cardiomyopathic hamsters.

    PubMed

    Marleau, Sylvie; Lapointe, Nathalie; Massicotte, Julie; Céméus, Catia; Jasmin, Gaëtan; Dumont, Louis; Sirois, Martin G; Rouleau, Jean-Lucien; Du Souich, Patrick; Ong, Huy

    2002-12-01

    In view of the potentially beneficial effect of GH on ventricular function of humans suffering from idiopathic dilated cardiomyopathy, we undertook a study to evaluate the optimal time to initiate treatment with GH and its duration in UM-X7.1 cardiomyopathic hamsters (CMH). GH (1 mg/kg.d) therapy was initiated either in the early or late (30 and 160 d old, respectively) phases of the disease and continued until death at 240 d of age. Age- and sex-matched Golden Syrian hamsters (GSH) were used as controls. Basal IGF-1 levels in serum were reduced by nearly half in CMH compared with GSH but were increased within a physiological range in male hamsters. In contrast, female hamsters presented elevated basal serum IGF-1 levels that were not further elevated by GH administration, as reported in experimental models and humans. Accordingly, the present study will focus on the effects of GH therapy on cardiac performance in male hamsters. GH did not improve ventricular function when starting at a late stage of the disease compared with CMH controls. Maximum rate of left ventricular pressure development decreased by approximately 64% in CMH treated early with recombinant bovine GH. Ventricular dysfunction was associated with morphologic indices of hypertrophy, ventricular dilatation, and extensive fibrosis. Mortality was strikingly increased in GH-treated CMH for 210 d (four males and eight females), as opposed to four females (and no male) in the vehicle-treated group. These results suggest that chronic treatment with recombinant bovine GH in CMH, starting at an early stage of lesion development, is associated with a reduced cardiac performance at the terminal stage of the disease.

  5. Age-related changes in auditory nerve-inner hair cell connections, hair cell numbers, auditory brain stem response and gap detection in UM-HET4 mice.

    PubMed

    Altschuler, R A; Dolan, D F; Halsey, K; Kanicki, A; Deng, N; Martin, C; Eberle, J; Kohrman, D C; Miller, R A; Schacht, J

    2015-04-30

    This study compared the timing of appearance of three components of age-related hearing loss that determine the pattern and severity of presbycusis: the functional and structural pathologies of sensory cells and neurons and changes in gap detection (GD), the latter as an indicator of auditory temporal processing. Using UM-HET4 mice, genetically heterogeneous mice derived from four inbred strains, we studied the integrity of inner and outer hair cells by position along the cochlear spiral, inner hair cell-auditory nerve connections, spiral ganglion neurons (SGN), and determined auditory thresholds, as well as pre-pulse and gap inhibition of the acoustic startle reflex (ASR). Comparisons were made between mice of 5-7, 22-24 and 27-29 months of age. There was individual variability among mice in the onset and extent of age-related auditory pathology. At 22-24 months of age a moderate to large loss of outer hair cells was restricted to the apical third of the cochlea and threshold shifts in the auditory brain stem response were minimal. There was also a large and significant loss of inner hair cell-auditory nerve connections and a significant reduction in GD. The expression of Ntf3 in the cochlea was significantly reduced. At 27-29 months of age there was no further change in the mean number of synaptic connections per inner hair cell or in GD, but a moderate to large loss of outer hair cells was found across all cochlear turns as well as significantly increased ABR threshold shifts at 4, 12, 24 and 48 kHz. A statistical analysis of correlations on an individual animal basis revealed that neither the hair cell loss nor the ABR threshold shifts correlated with loss of GD or with the loss of connections, consistent with independent pathological mechanisms. Copyright © 2015 IBRO. Published by Elsevier Ltd. All rights reserved.

  6. Corrosion study on high power feeding of telecomunication copper cable in 5 wt.% CaSO4.2H2O solution

    NASA Astrophysics Data System (ADS)

    Shamsudin, Shaiful Rizam; Hashim, Nabihah; Ibrahim, Mohd Saiful Bahri; Rahman, Muhammad Sayuzi Abdul; Idrus, Muhammad Amin; Hassan, Mohd Rezadzudin; Abdullah, Wan Razli Wan

    2016-07-01

    The studies were carried out to find out the best powering scheme over the copper telephone line. It was expected that the application of the higher power feeding could increase the data transfer and capable of providing the customer's satisfaction. To realize the application of higher remote power feeding, the potential of corrosion problem on Cu cables was studied. The natural corrosion behaviour of copper cable in the 0.5% CaSO4.2H2O solution was studied in term of open circuit potential for 30 days. The corrosion behaviour of higher power feeding was studied by the immersion and the planned interval test to determine the corrosion rate as well as the effect of voltage magnitudes and the current scheme i.e. positive direct (DC+) and alternating current (AC) at about 0.40 ± 0.01 mA/ cm2 current density. In the immersion test, both DC+ and AC scheme showed the increasing of feeding voltage magnitude has increased the corrosion rate of Cu samples starting from 60 to 100 volts. It was then reduced at about 100 - 120 volts which may due to the passive and transpassive mechanism. The corrosion rate was slowly reduced further from 120 to 200 volts. Visually, the positively charged of Cu cable was seems susceptible to severe corrosion, while AC scheme exhibited a slight corrosion reaction on the surface. However, the planned interval test and XRD results showed the corrosion activity of the copper cable in the studied solution was a relatively slow process and considered not to be corroded as a partially protective scale of copper oxide formed on the surface.

  7. Constraints on the distribution of CaSO4·nH2O phases on Mars and implications for their contribution to the hydrological cycle

    NASA Astrophysics Data System (ADS)

    Robertson, Kevin; Bish, David

    2013-03-01

    The stability of minerals in the CaSO4·nH2O system was investigated using a Bruker D8 X-ray powder diffractometer equipped with an environmental cell interfaced to a heating stage, low-temperature chiller, and relative humidity (RH) generator. This in situ analysis procedure allowed for precise monitoring of dehydration/hydration reactions over a range of PH2O values from 4 to 15,000 Pa. The formation of bassanite from gypsum was sluggish below 323 K and is unlikely to occur under current martian conditions over a diurnal/seasonal cycle from desiccation alone. Dehydration is possible on a localized scale in association with volcanic/impact events although temperatures of dehydration and rates of reaction depend on PH2O, particle size, sample thickness and heating rate. Analysis of anhydrite rehydration at 258 K suggests that if gypsum dehydration were to occur, bassanite would be observed on the martian surface under present low PH2O conditions. In addition, a stable bassanite phase could potentially cycle between n = 0.5 and n = 0.67 as a function of relative humidity (1-80%), resulting in a small flux of H2O between the atmosphere and the regolith over a diurnal cycle. Rehydration of bassanite to gypsum occurs only under conditions of 100%RH; therefore the presence of a bassanite phase on the surface of Mars can be used to help constrain paleoclimates. Low-temperature (258 K) XRD hydration experiments of bassanite resulted in the formation of gypsum in the presence of ice, suggesting that bassanite will not be present in association with H2O ice. This behavior could simulate a potential hydration mechanism on the martian surface at higher latitudes as well as at depth in association with subsurface ice at lower latitudes.

  8. Ho-Nee-Um Trail.

    ERIC Educational Resources Information Center

    Irwin, Harriet; And Others

    Appreciation and concern for the preservation of our natural resources by all citizens is the primary concern of this teacher's guide for use in the elementary grades. It employes the use of a filmstrip in conjunction with a local nature trail, to guide students in developing awareness - by looking closely, listening, touching, and smelling. Major…

  9. Investigation of the hydration process in 3CaO.Al(2)O(3)-CaSO(4) . 2H(2)O-plasticizer-H(2)O systems by X-ray diffraction.

    PubMed

    Carazeanu, Ionela; Chirila, Elisabeta; Georgescu, Maria

    2002-06-10

    The development of the hydration process in 3CaO.Al(2)O(3)-CaSO(4) . 2H(2)O-H(2)O system is studied by X-ray diffraction in the presence of varying contents of new plasticizer admixtures belonging to the lignosulphonates class (calcium lignosuphonate-LSC) and condensates melamine formaldehyde sulfonated class-MSF (VIMC-11). The plasticizer admixtures were added in proportion of 0.1-1% solid substance. The influence of the plasticizer admixtures on the hydration process with increasing time is observed and it is shown to depend on the nature and content of the admixtures and the reaction time. The strong adsorption of admixtures on the surfaces on the anhydrous or partially hydrated particles of the system can explain the influence of the admixtures upon the kinetics of the hydration process retardation or acceleration. These plasticizer admixtures influence also the evolution of the hydrated compounds and forming of the hardening structure in the 3CaO.Al(2)O(3)-CaSO(4) . 2H(2)O-H(2)O system; their proportion in the system and the considered length of hardening are correlated. In the 3CaO.Al(2)O(3)-CaSO(4) . 2H(2)O-H(2)O system there are two different influences of the plasticizer admixtures upon the hydration process. One is a delaying action, as a result of plasticizer adsorption on the surface of the anhydrous and hydrated compound particles and another one is the intensifying action due to the stronger dispersion of the particles in aqueous medium.

  10. Arsenic speciation in synthetic gypsum (CaSO4·2H2O): A synchrotron XAS, single-crystal EPR, and pulsed ENDOR study

    NASA Astrophysics Data System (ADS)

    Lin, Jinru; Chen, Ning; Nilges, Mark J.; Pan, Yuanming

    2013-04-01

    Gypsum (CaSO4·2H2O) is a major by-product of mining and milling processes of borate, phosphate and uranium deposits worldwide and, therefore, potentially plays an important role in the stability and bioavailability of heavy metalloids, including As, in tailings and surrounding areas. Gypsum containing 1900 and 185 ppm As, synthesized with Na2HAsO4·7H2O and NaAsO2 in the starting materials, respectively, have been investigated by synchrotron X-ray absorption spectroscopy (XAS), single-crystal electron paramagnetic resonance spectroscopy (EPR), and pulsed electron nuclear double resonance spectroscopy (ENDOR). Quantitative analyses of As K edge XANES and EXAFS spectra show that arsenic occurs in both +3 and +5 oxidation states and the As3+/As5+ value varies from 0.35 to 0.79. Single-crystal EPR spectra of gamma-ray-irradiated gypsum reveal two types of arsenic-associated oxyradicals: [AsO3]2- and an [AsO2]2-. The [AsO3]2- center is characterized by principal 75As hyperfine coupling constants of A1 = 1952.0(2) MHz, A2 = 1492.6(2) MHz and A3 = 1488.7(2) MHz, with the unique A axis along the S-O1 bond direction, and contains complex 1H superhyperfine structures that have been determined by pulsed ENDOR. These results suggest that the [AsO3]2- center formed from electron trapping on the central As5+ ion of a substitutional (AsO4)3- group after removal of an O1 atom. The [AsO2]2- center is characterized by its unique A(75As) axis approximately perpendicular to the O1-S-O2 plane and the A2 axis along the S-O2 bond direction, consistent with electron trapping on the central As3+ ion of a substitutional (AsO3)3- group after removal of an O2 atom. These results confirm lattice-bound As5+ and As3+ in gypsum and point to potential application of this mineral for immobilization and removal of arsenic pollution.

  11. Food insecurity and health status in deprived populations, 2014: a multicentre survey in seven of the social and medical healthcare centres (CASOs) run by Doctors of the World, France.

    PubMed

    Laurence, S; Durand, E; Thomas, E; Chappuis, M; Corty, J F

    2017-02-01

    To document eating practices and socio-economic profiles of patients seen in the social and medical healthcare centres (CASOs in its French acronym) run by Doctors of the World (Médecins du Monde, MdM) in France and evaluate their nutritional and health status. The survey was carried out between April and May 2014 in seven CASOs in France. All the patients attending MdM clinics were given a nutrition and health questionnaire. Their anthropometric measurements were taken on site. 77.7% of the households surveyed were food insecure due to constrained resources. On average, the patients interviewed declared spending €2.5 per person per day on food. A total of 46.3% of adults declared not having eaten for a whole day at least once in the month preceding the survey. One third of the patients declared having lost weight over the last two weeks. A chronic pathology was diagnosed in more than one in two patients; 19% were obese and 34% were overweight. Constrained resources lead people living in very precarious conditions to eat without adequate nutrition, which could have consequences for their health, such as diabetes, obesity and cardiovascular disease. Copyright © 2016 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.

  12. Hansen Neuropathy: Still a Possible Diagnosis in the Investigation of a Peripheral Neuropathy.

    PubMed

    Veiga, Andreia; Costa, Alexandre; Taipa, Ricardo; Guimarães, António; Pires, Manuel Melo

    2015-01-01

    Introdução: A lepra continua a ser uma das causas mais frequentes de neuropatia periférica. Apesar de tida como erradicada em Portugal, ainda se documenta no estudo neuropatológico de doentes com clínica de neuropatia periférica sem diagnóstico etiológico definido.Material e Métodos: Revisão dos casos neuropatia por doença de Hansen diagnosticados na Unidade de Neuropatologia do Centro Hospitalar do Porto no período de 1978 e 2013 atendendo ao género, idade, manifestações clínicas e achados neuropatológicos.Resultados: Foram identificados 21 doentes com diagnóstico neuropatológico de neuropatia por doença de Hansen, com predomínio do sexo masculino. A idade média ao diagnóstico foi de 52 anos, sendo a sintomatologia sensitiva predominante. O intervalo entre sintomatologia e diagnóstico oscilou entre 1 a 38 anos. Na maioria foi identificada forma tuberculoide em biópsia de nervo e detetados bacilos em pele e nervo em 44% dos casos.Discussão: A mononeurite é a forma mais comum de apresentação de hanseníase, podendo cursar com outras manifestações clínicas incluindo lesões cutâneas. A infeção pelo M. leprae lesiona fibras mielinizadas e não mielinizadas, com substituição do tecido nervoso por colagénio resultando em fibrose. O diagnóstico da lepra é apenas conseguido por estudo neuropatológico das lesões cutâneas e/ou nervo periférico, adjuvado pela identificação do bacilo.Conclusão: A doença de Hansen continua a ser um problema de saúde pública em áreas tropicais e, apesar de rara, ainda descrita em países ocidentais, devendo ser considerada como uma hipótese de diagnóstico na investigação de neuropatia periférica.

  13. Asociación de la adherencia a la dieta mediterránea al inicio del embarazo y riesgo de gastrosquisis en la descendencia: un estudio de casos-controles

    PubMed Central

    Cánovas-Conesa, A.; Gomariz-Peñalver, V.; Sánchez-Sauco, M.F.; Vega, D.C. Jaimes; Ortega-García, J.A.; García, M.J. Aranda; Marín, J.L. Delgado; Ascanio, A. Trujillo; Hernández, F. López; Jimenez, J.I. Ruiz; de Paco Matallana, C.; Soldin, O.P.; Solís, M. Sánchez

    2016-01-01

    Resumen Objetivos El objetivo de este estudio fue estudiar la asociación de la adherencia a la dieta mediterránea materna al inicio del embarazo y el riesgo de gastrosquisis en la descendencia. Métodos Estudio de casos-control. 11 casos incidentes de gastrosquisis en la Región de Murcia de 2007 a 2012 y 34 controles concurrentes. Cuestionario validado de Frecuencia Alimentaria (CFA) sobre la dieta periconcepcional de 98 ítems realizado ‘cara a cara’ en el momento del diagnóstico. Factores confundidores: tabaquismo, expositión a cannabis/marihuana, edad materna y paterna, índice de masa corporal, ingresos económicos y nivel de estudios. Estudio descriptivo y regresión logística multivariable. Resultados Las madres de niños con gastrosquisis son más jóvenes (20,8 años; IC 95% 17,3–24,2) y su dieta tiene un menor aporte calórico, de grasas saturadas y monoinsaturadas y de proteínas que los controles. Odds Ratio (OR) en el modelo multivariable controlado por los factores confundidores: edad materna (años) 0,70 (IC95% 0,51–0,96); ácidos grasos monoinsaturados (oleico, g) 0,79 (IC95% 0,65–0,97) y consumo de vegetales (raciones/semana) 0,70 (IC95% 0,48–1,00). Conclusiones Una dieta materna rica en ácido oleico y productos vegetales podría contribuir a prevenir el riesgo de oclusión vascular de las arterias onfalomesentéricas, disminuyendo el riesgo de gastrosquisis. PMID:23833926

  14. Federation of the European Pharmacological Societies-fourth annual meeting. Part II. 14-17 July 2004, Porto. Portugal.

    PubMed

    Urch, Catherine

    2004-09-01

    The aims of this Federation of European Pharmacological Societies (EPHAR) meetings are to broaden the understanding of fundamental pharmacology. Rather than present clinically relevant novel therapeutics, most symposia and posters presented data exploring the role of receptors, transmitters and potential agents within a basic science framework. The opening plenary session was given by Sir James Black, and the main meeting revolved around parallel symposia and poster sessions. Most presenters gave a broad overview of the current understanding, with less emphasis on individual compounds, while others developed a theme exploring specific agonists/antagonists and experimental models.

  15. Assessing mismatches in ecosystem services proficiency across the urban fabric of Porto (Portugal): The influence of structural and socioeconomic variables

    Treesearch

    Marisa S. Graça; João F. Gonçalves; Paulo J.M. Alves; David J. Nowak; Robert Hoehn; Alexis Ellis; Paulo Farinha-Marques; Mario. Cunha

    2017-01-01

    According to UN estimates, it is expected that the world population living in cities will exceed 66% in 2050 (United Nations, 2014). The complex and intense interaction of ecological and socioeconomic systems shaping cities has highlighted the need to foster an interdisciplinary approach to urban issues integrating Natural and Social Sciences (Alberti et al., 2003)....

  16. The Body Donation Program at the Federal University of Health Sciences of Porto Alegre: A Successful Experience in Brazil

    ERIC Educational Resources Information Center

    da Rocha, Andrea Oxley; Tormes, Diane Alícia; Lehmann, Natassia; Schwab, Rafael Santos; Canto, Raphael Teixeira

    2013-01-01

    The use of dissection to study human anatomy is the foundation for educational excellence among future health professionals, as it offers an ideal opportunity to learn the body's morphology in three dimensions while also providing students with a more humanistic education. The shortage of bodies for dissection, combined with the Brazilian…

  17. LDL apheresis in the treatment of familial hypercholesterolemia: experience of Hospital Santo António, Porto.

    PubMed

    Palma, Isabel; Caldas, Ana Rita; Palma, Isabel Mangas; Queirós, José Alexandre; Madureira, Anselmo; Oliveira, José Carlos; Palma, Paulo; Correia, Carlos; Ramos, Maria Helena

    2015-03-01

    High plasma levels of low-density lipoprotein (LDL) cholesterol are a risk factor for the development of premature atherosclerosis. Direct adsorption of lipoproteins (DALI) is an apheresis technique by which LDL cholesterol is selectively removed from whole blood. The present study describes our experience with DALI LDL apheresis in severely hypercholesterolemic patients. Three hypercholesterolemic patients suffering from atherosclerotic complications were treated fortnightly by DALI apheresis, in a total of 308 sessions between December 2008 and January 2013. All patients were on the highest tolerated dose of statins and other lipid-lowering drugs. The sessions were essentially uneventful, adverse events being recorded in only 3.6% of them. A mean 63.3% acute reduction in LDL cholesterol was obtained. DALI apheresis proved to be a simple, safe and efficient method of lipid apheresis in hypercholesterolemic patients refractory to conservative lipid-lowering therapy. Copyright © 2013 Sociedade Portuguesa de Cardiologia. Published by Elsevier España. All rights reserved.

  18. Instituto de Fisica, UFRGS, CP 15051, 91501-970, Porto Alegre RS, Brazil: Replica theory of granular media

    NASA Astrophysics Data System (ADS)

    Arenzon, Jeferson J.

    1999-03-01

    An infinite range spin-glass-like model for granular systems is introduced and studied through the replica mean-field formalism. Equilibrium, density-dependent properties under vibration and gravity are obtained that qualitatively resemble the results from real and numerical experiments.

  19. [Small diameter porto-caval shunt in patients with bleeding from esophageal varices: a report of twenty cases].

    PubMed

    Orea Martínez, Juan Gerardo; Obregón García, Ana Cristina; Pérez Vergara, Ana María; Márquez Acosta, Alberto

    2005-01-01

    SDPCS (The small diameter portacaval shunt) published originally by Rypins and Sarfeh in Los Angeles in 1983 has recieved little attention in our comunity to control bleeding in patients with portal hypertention. The bleeding of esophageal varices represents the must frequent and dramatic complication caused by cirrhosis, with a 50% of mortality without treatment. Comunicate the indications, thecnique and results with the Small Diameter Portocaval shunt. Prospective trial from April 1992 to November 1998. Twenty patients with bleeding esophageal varices, 6 female, 14 male, ages 31-72 years; Alcoholic Cirrhosis 7 patients; Hepatitis B virus 4 patients, Criptogenic 4 patients, Child A; 13 patients, Child B; 5 patients and Child B-C 2 patients. Direct intraoperatory Inferior Vena Cava and portal pressures was obteined in all cases.14 grafs 10 mm and 6, 8 mm Polytetrafiuoroetehilene (PTFE) grafts were used . Follow up 6 to 68 months; Mortality 5%, morbidity 5%, rebleeding 15%, graft trhombosis 10%, encephalopathy: Mild 5%, Moderated 5%, Severe 10%. Mean surgical time 4.28 h. Mean blood transfussion 1.4 units of red blood cells. The venous pressure pre and post grafting decreased significantly p < 0.01. SDPCS is a easy to apply procedure and results are addecuate; it requires an specialized preoperatory ultrasound. The descensus in portal pressure after grafting and graf permeability was corroborated.

  20. The Body Donation Program at the Federal University of Health Sciences of Porto Alegre: A Successful Experience in Brazil

    ERIC Educational Resources Information Center

    da Rocha, Andrea Oxley; Tormes, Diane Alícia; Lehmann, Natassia; Schwab, Rafael Santos; Canto, Raphael Teixeira

    2013-01-01

    The use of dissection to study human anatomy is the foundation for educational excellence among future health professionals, as it offers an ideal opportunity to learn the body's morphology in three dimensions while also providing students with a more humanistic education. The shortage of bodies for dissection, combined with the Brazilian…

  1. Análise sobre o Conhecimento de um Grupo de Alunos do Ensino Médio da Rede Estadual de São Paulo sobre Termos e Fenômenos Astronômicos do Cotidiano

    NASA Astrophysics Data System (ADS)

    de Oliveira, E. F.; Voelzke, M. R.; Amaral, L. H.

    2007-08-01

    Embora os Parâmetros Curriculares Nacionais do Ensino Médio (PCN-EM) e as orientações complementares a esses Parâmetros (PCN+) apontem a importância de uma abordagem significativa de conceitos relacionados à astronomia nas aulas de Física, muitos estudantes terminam o Ensino Médio (EM) sem compreender a razão de certos acontecimentos de origem celeste, ainda que estes façam parte de seu cotidiano. Este trabalho tem por objetivo analisar os conhecimentos básicos em astronomia dos alunos de EM da escola estadual Batista Renzi, bem como investigar os meios através dos quais estes conhecimentos foram adquiridos. Para tanto foi elaborado um questionário de múltipla escolha aplicado a 310 alunos distribuídos entre as três séries do EM dos períodos matutino e noturno. Dessa forma, observou-se que apenas 34,5% relacionaram as estações do ano à inclinação do eixo de rotação da Terra, 21,3% indicaram a influência gravitacional da Lua e do Sol como responsáveis pelo fenômeno das marés, 24,5% indicaram corretamente quais são os objetos celestes mais próximos da Terra, 36,1% identificaram ano-luz como uma medida de distância e 34,2% reconheceram uma estrela cadente como meteoro. Em contrapartida, 67,1% compreendiam a sucessão entre dia e noite, 73,9% identificaram o Sol como estrela e 52,3% relacionaram o Big Bang à origem do Universo. Além disso, foram comparadas as respostas de alunos de diferentes séries e períodos, observando-se, dentre outras coisas, que os estudantes do terceiro ano apresentam um percentual de acertos semelhante ao dos alunos do primeiro, caracterizando que a abordagem de tópicos relacionados à astronomia no EM não tem contribuído para uma maior compreensão dos fenômenos e conceitos.

  2. A Visão do Universo Segundo a Concepção de um Grupo de Alunos do Ensino Médio de São Paulo

    NASA Astrophysics Data System (ADS)

    Araújo, M. A. A.; Elias, D. C. N.; Amaral, L. H.; Araújo, M. S. T.; Voelzke, M. R.

    2005-12-01

    Nesse trabalho foi identificada por meio de um questionário a visão de mundo sobre o Universo espaço e tempo entre 270 estudantes de Ensino Médio de três escolas de São Paulo. Constatou-se pouco conhecimento dos temas investigados sendo que apenas 20% dos alunos relacionaram as semanas com as fases da lua enquanto 28% associaram as estações do ano à inclinação do eixo de rotação da Terra e 23% tinham noções das distâncias entre objetos celestes próximos da Terra. Enquanto 56% conseguiram relacionar o Big Bang com a origem do Universo verificou-se que 37% reconheciam ano-luz como unidade de distância e 60% reconheciam o Sol como uma estrela. Apesar de 60% dos alunos indicarem a escola como principal fonte dos conhecimentos de astronomia seus conceitos ainda são inadequados havendo necessidade de aprimoramento da abordagem desses conteúdos pois apesar de popular a astronomia é veiculada de maneira pouco esclarecedora e com imprecissões.

  3. Percepção astronómica de um grupo de alunos do ensino médio de uma escola da rede estadual de São Paulo

    NASA Astrophysics Data System (ADS)

    de Oliveria, E. F.; Voelzke, M. R.

    2009-03-01

    Sendo a Astronomia uma das cièncias mais antigas da humanidade, e considerando sua importáncia histórica e cultural, é de extrema releváncia que tópicos relacionados a ela sejam tratados nas escolas. Embora os Parámetros Curriculares Nacionais do Ensino Médio (PCN-EM) e as Orientaçiacute;es Complementares aos Parámetros (PCN+) apontem a importáncia de uma abordagem significativa de conceitos relacionados à Astronomia nas aulas de Física, muitos estudantes terminam o Ensino Médio (EM) sem compreender a razão de certos acontecimentos de origem celeste, ainda que estes façam parte de seu cotidiano e sejam alvos da curiosidade natural dos jovens. Da observação dessa curiosidade em alunos de uma escola pública paulista, na cidade de Suzano, surgiu o interesse em investigar os conhecimentos básicos em Astronomia dos alunos do Ensino Médio desta escola, constituindo-se este como principal objetivo desta pesquisa. Para tanto foi elaborado um questionário de múltipla escolha aplicado inicialmente a 34 alunos do primeiro ano e, posteriormente, a mais 310, distribuídos entre as très séries do Ensino Médio dos períodos matutino e noturno. Dessa forma, observou-se que 73,9% dos estudantes identificaram o Sol como sendo uma estrela, 67,1% mostraram compreender a sucessão entre dia e noite e 52,3% relacionaram o Big Bang à origem do Universo. Em contrapartida, apenas 34,5% relacionaram as estaçíes do ano à inclinação do eixo de rotação da Terra, 21,3% indicaram a influència gravitacional simultánea da Lua e do Sol como responsável pelo fenòmeno das marés, 24,5% indicaram corretamente quais são os objetos celestes mais próximos da Terra, 36,1% identificaram ano-luz como uma medida de distáncia e 34,2% reconheceram as estrelas cadentes como meteoros, evidenciando-se assim o pequeno discernimento dos estudantes quanto aos fenòmenos e termos astronòmicos do cotidiano. Além disso, foram comparadas as respostas de alun! os de diferentes s

  4. Recombinant bovine growth hormone-induced reduction of atrial natriuretic peptide is associated with improved left ventricular contractility and reverse remodeling in cardiomyopathic UM-X7.1 hamsters with congestive heart failure.

    PubMed

    Mulumba, Mukandila; Céméus, Catia; Dumont, Louis; du Souich, Patrick; Ong, Huy; Marleau, Sylvie

    2007-04-01

    To assess the effect of short-term treatment with GH on left ventricular contractility and remodeling, after the development of heart failure in cardiomyopathic hamsters (CMH). Two groups of 200-day-old UM-X7.1 CMH received daily subcutaneous injections of recombinant bovine (rb) GH (1mg/kg/day) or 0.9% NaCl for 40 days. Golden Syrian hamsters (GSH) were used as controls. At 240-day-old, the hamsters were randomly subjected to (i) assessment of left ventricular systolic function in a Langendorff perfused mode followed by the determination of the passive diastolic pressure-volume relationship and morphometric measurements; (ii) assessment of left ventricular mRNA expression of genes belonging to the fetal gene program including atrial (ANP) and brain (BNP) natriuretic peptides and cardiac myosin heavy chain isoforms and of the circulating levels of the natriuretic peptides. Hearts from CMH were hypertrophied and dilated (p<0.05) compared to hearts from GSH, along with a approximately 10-fold increase in the circulating ANP and BNP levels. Left ventricular BNP and ANP mRNAs were elevated by 2- and 3-fold, respectively, compared to GSH. rbGH reduced both ANP mRNA and ANP circulating levels by 34% (p<0.01) but did not significantly modulate BNP levels. This effect was associated with a preserved systolic function and reverse remodeling as assessed by a leftward shift of the passive diastolic pressure-volume relationship indicating reduced ventricular dilatation. The data show that a short-term administration of GH in the terminal phase of the disease confers cardioprotection by attenuating systolic dysfunction and by inducing beneficial reverse remodeling.

  5. Ultrawide bandwidth 1.55-um lasers

    NASA Astrophysics Data System (ADS)

    Morton, Paul A.; Tanbun-Ek, Tawee; Logan, Ralph A.; Ackerman, David A.; Shtengel, Gleb E.; Yadvish, R. D.; Sergent, A. M.; Sciortino, Paul F., Jr.

    1996-04-01

    This paper describes the essential elements for creating a practical wide bandwidth directly modulated laser source. This includes considerations of the intrinsic limitations of the laser structure, due to the resonant frequency and damping of the laser output, together with carrier transport issues to allow carriers in the device active region to be efficiently modulated at high speeds. the use of a P-doped compressively strained multiple-quantum well active region to provide high intrinsic speed and remove transport limitations is described, together with record setting results of 25 GHz modulation bandwidth for a 1.55 micrometer Fabry-Perot laser and 26 GHz bandwidth for a 1.55 micrometer DFB laser. The challenges of providing high bandwidth electrical connections to the laser on a suitable submount, together with fiber attachment and microwave packaging, are discussed. Results of fully packaged 1.55 micrometer DFB lasers with 25 Ghz modulation bandwidth are shown. Digital modulation of the packaged 1.55 micrometer DFB including impedance matching is described, and the transient wavelength chirp is presented. This low chirp is reduced further using an optical filter, to provide a 10 GBit/s source with chirp similar to that of an external electroabsorption modulator.

  6. Cultural adaptation and the Clavien-Dindo surgical complications classification translated to Brazilian Portuguese.

    PubMed

    Moreira, Luis Fernando; Pessôa, Marcelo Castro Marçal; Mattana, Diego Sachet; Schmitz, Fernando Fernandes; Volkweis, Bernardo Silveira; Antoniazzi, Jorge Luiz; Ribeiro, Liacyr

    2016-01-01

    to generate a translated and validated version of the Clavien-Dindo Classification of Surgical Complications (CDC) to Brazilian Portuguese (CDC-BR). the process of translation and adaptation followed the guideline of Beaton et al., 2000. We divided 76 participating surgeons, in different levels of experience, from the Department Surgery of the Hospital de Clínicas de Porto Alegre, into two groups: Group I applied the original version (CDC, n=36);r Group II used the modified version (CDC-BR, n=40). Each group classified 15 clinical cases of surgical complications. We compared performance between the groups (Mann-Whitney test) relating to the level of experience of the surgeon (Kruskal-Wallis test), considering p value <0.05 as significant. the performance of the Group II (CDC-BR) was higher, with 85% accuracy, compared with 79% of Group I (CDC), p-value =0.012. The performance of the groups as for surgeons experience displayed p=0.171 for Group I, p=0.528 for Group II, and p=0.135 for overall performance. we produced a translated and validated version of the CDC for Brazilian Portuguese. The instrument will be a useful tool in the production of evidence on surgical outcomes. gerar uma versão traduzida e validada da Classificação de Complicações Cirúrgicas de Clavien-Dindo (CCD) para o Português-Brasileiro (CCD-BR). o processo de tradução e adaptação seguiu a diretriz de Beaton et al., de 2000. Formaram-se dois grupos, Grupo I, que utilizou a versão original (CCD, n=36) testado em relação ao Grupo II, com a versão modificada (CCD-BR, n=40), com um total de 76 cirurgiões participantes em níveis de experiência distintos do Departamento de Cirurgia do Hospital de Clínicas de Porto Alegre. Quinze casos clínicos de complicações cirúrgicas foram classificados em cada grupo. Comparou-se o desempenho entre grupos (teste de Mann-Whitney) relacionando ao nível de experiência dos cirurgiões (teste de Kruskal-Wallis). Valor de p<0,05 como significativo

  7. Precise and accurate isotope fractionation factors (α17O, α18O and αD) for water and CaSO4·2H2O (gypsum)

    NASA Astrophysics Data System (ADS)

    Gázquez, Fernando; Evans, Nicholas P.; Hodell, David A.

    2017-02-01

    Gypsum (CaSO4·2H2O) is a hydrated mineral containing crystallization water, also known as gypsum hydration water (GHW). We determined isotope fractionation factors (α17O, α18O and αD) between GHW and free water of the mother solution in the temperature range from 3 °C to 55 °C at different salinities and precipitation rates. The hydrogen isotope fractionation factor (αDgypsum-water) increases by 0.0001 units per °C between 3 °C and 55 °C and salinities <150 g/L of NaCl. The αDgypsum-water is 0.9812 ± 0.0007 at 20 °C, which is in good agreement with previous estimates of 0.981 ± 0.001 at the same temperature. The α18Ogypsum-water slightly decreases with temperature by 0.00001 per °C, which is not significant over much of the temperature range considered for paleoclimate applications. Between 3 °C and 55 °C, α18Ogypsum-water averages 1.0035 ± 0.0002. This value is more precise than that reported previously (e.g. 1.0041 ± 0.0004 at 25 °C) and lower than the commonly accepted value of 1.004. We found that NaCl concentrations below 150 g/L do not significantly affect α18Ogypsum-water, but αDgypsum-water increases linearly with NaCl concentrations even at relatively low salinities, suggesting a salt correction is necessary for gypsum formed from brines. Unlike oxygen isotopes, the αDgypsum-water is affected by kinetic effects that increase with gypsum precipitation rate. As expected, the relationship of the fractionation factors for 17O and 18O follows the theoretical mass-dependent fractionation on Earth (θ = 0.529 ± 0.001). We provide specific examples of the importance of using the revised fractionation factors when calculating the isotopic composition of the fluids.

  8. El rol de Ia colaboracion y el Modelo de Aprendizaje Basado en Proyectos (ABPr) mediante el lente de la Teoria de Actividad (CHAT): un estudio de caso con estudiantes de 9no grado

    NASA Astrophysics Data System (ADS)

    Delgado, Isabel C.

    Los modelos de eensenanza y aprendizaje constructivistas conceptualizan el aprendizaje como un proceso activo. El modelo de Aprendizaje Basado en Proyectos (ABPr) se distingue por una serie de componentes, entre los cuales se destaca el aspecto colaborativo y cooperativo como un reto al momento de su implantacion. Son pocas las investigaciones que se concentran en este aspecto del modelo. En este estudio, se analizaron las diversas interacciones que surgen durante la implantacion de una unidad curricular sobre el tema de Geologia de Puerto Rico, la cual se diseno con el modelo ABPr cuyo enfoque es orientacion a proyectos. Particularmente, se examinaron las interacciones sociales que surgen entre los pares y entre pares y docente durante el proceso de planificacion y desarrollo de los productos finales, al igual que las interacciones entre los estudiantes y el material didactico en estas etapas del modelo. La investigacion es de tipo cualitativo e incorpora como diseno el estudio de caso. Las diversas interacciones constituyen la unidad de analisis. En el estudio participaron 19 estudiantes de 9no grado, a quienes se organizaron en 5 grupos colaborativos por temas de interes (Pangea, Placas tectonicas, Volcanes, Tsunamis y Terremotos). Las tecnicas que se utilizaron para recopilar los datos fueron: observaciones participativas, grupos focales y analisis de documentos (cuadernos reflexivos y respuestas de los estudiantes a la pregunta central del proyecto). Para el analisis de los datos se aplico la teoria de actividad (CHAT) que concentra la unidad de analisis en la actividad humana en un contexto particular. Los resultados del estudio senalan que las interacciones entre pares, entre pares y docente, asi como entre estudiantes y material didactico son fundamentales en el proceso de aprendizaje. Una mayor interaccion entre pares durante las etapas de planificar y desarrollar los productos finales de la unidad, promueve una mejor comprension de los conceptos de la

  9. Determinação da massa de júpiter a partir das órbitas de seus satélites: um experimento didático

    NASA Astrophysics Data System (ADS)

    Schlickmann, M. S.; Saito, R. K.; Becker, D. A.; Rezende, M. F., Jr.; Cid Fernandes, R.

    2003-08-01

    Este trabalho apresenta o roteiro piloto de uma prática observacional em astronomia, junto com os primeiros resultados obtidos nesta fase de implementacão. O projeto, que será executado em duas etapas, visa introduzir noções de Astronomia a alunos do Ensino Médio e iniciantes nos cursos de Física. O experimento consiste em medir as órbitas dos satélites Galileanos e, a partir da análise dos dados coletados, verificar a validade da Lei das órbitas de Kepler, determinando a massa do planeta Júpiter. Em uma primeira etapa, as observações serão feitas utilizando um telescópio Meade LX200 10" e câmera CCD para obter uma seqüência de imagens do planeta, que possibilitará medir o movimento de seus satélites. A segunda etapa terá início a partir do funcionamento do telescópio em modo robótico, com a possibilidade de observações via internet por instituições de ensino. Para o desenvolvimento deste experimento foram inicialmente coletadas várias imagens de Júpiter obtidas com os instrumentos citados acima. Estas imagens serviram como base para confecção dos roteiros para a experiência no nível médio e superior. Os roteiros serão inicialmente apresentados em uma home-page. Nela também se buscará uma contextualização histórica da experiência bem como o estabelecimento de relações com professores e alunos, propostas metodológicas e a disponibilização dos programas computacionais necessários para a utilização "on-line" pelos usuários. O projeto conta com apoio da Fundação VITAE.

  10. The stability of Cl-CO3-scapolite relative to plagioclase + CaCO3 + CaSO4 in the presence of NaCl brines as a function of P-T-XNaCl

    NASA Astrophysics Data System (ADS)

    Harlov, D. E.; Budzyn, B.

    2008-12-01

    Cl-CO3-scapolite [(Na,Ca)4[Al3 (Al,Si) 3 Si3 O24](Cl, CO3 , SO4 )] occurs as a common partial to total alteration of plagioclase in deep-crustal xenoliths, skarns, marbles, gabbros, metabasites, calc-silicate gneisses, as well as in quartzofeldspathic granulite-facies rocks in general (Moecher and Essene, 1990, J Petrol 31, 997). Alteration of plagioclase to Cl-CO3-scapolite is presumed due to metasomatism by CO2-NaCl-H2O fluids (Satish-Kumar and Santosh, 1998, Geol Mag 135, 27). Previous experimental work on CO3-scapolite has focused on reversing the equilibrium 3 CaAl2 Si2 O8 + CaCO3 = Ca4 Al6 Si6 O24 CO3 in either pure CO2 (Goldschmidt and Newton, 1977, Am Mineral 62, 1063) or in CO2-H2O (Huckenholz and Seiberl, 1989 Abs IGC 28, 2.79). These experiments have determined that the anorthite- calcite-scapolite equilibrium is nearly pressure-invariant in P-T space (200 to 1500 MPa) occurring at approximately 790 to 820 °C (Huckenholz and Seiberl, 1989). In this study, a series of experiments, involving the equilibrium 3 Plagioclase(An60) + 0.5 CaCO3 + 0.5 CaSO4 = [(Na,Ca)4[Al3 (Al,Si)3 Si3 O24](Cl, CO3, SO4 )] plus an NaCl brine (10/90, 20/80, 30/70, and 50/50 molar NaCl/H2O) have been done at 500, 1000, and 1500 MPa and 600 to 900 °C. Natural plagioclase and scapolite, along with synthetic calcite and anhydrite, were lightly ground together in equi-molar amounts in ethanol. The mineral mix (10 mg) + NaCl brine (5 mg), or pure H2O (1.5 mg), were loaded into 3 mm diameter/1.3 mm long Pt capsules which were arc-welded shut, folded, and placed horizontally in a CaF2 setup (with graphite oven), such that the thermocouple tip touched the Pt capsule, or placed in a hydrothermal autoclave (600 and 700 °C; 500 MPa) with an internal thermocouple. A series of duplicate experiments for the same mineral mix, at the same P-T conditions, were done utilizing pure H2O as the flux. The H2O-only experiments duplicated the P-T reversals of Huckenholz and Seiberl (1989). In contrast

  11. Lack of methicillin-resistant Staphylococcus aureus nasal carriage among patients at a primary-healthcare unit in Porto Alegre, Brazil.

    PubMed

    Scribel, Letícia Vale; Scribel, Mariana Vale; Bassani, Ernídio; Barth, Afonso Luis; Zavascki, Alexandre Prehn

    2011-01-01

    Community-associated methicillin-resistant Staphylococcus aureus (MRSA) has emerged as a pathogen in individuals without traditional risk factors. MRSA nasal carriage was assessed in individuals consulting at a Primary Health Unit in Brazil. A total of 336 individuals were included: 136 were tested only for MRSA and 200 for any S. aureus. No MRSA was found among the 336 individuals and 23 (11.5%) of 200 were colonized by S. aureus. Low prevalence rates have been found in non-hospitalized individuals, but MRSA surveillance should be encouraged to monitor clinical and molecular epidemiology of CA- MRSA.

  12. Mycobacterium tuberculosis of the RDRio Genotype Is the Predominant Cause of Tuberculosis and Associated with Multidrug Resistance in Porto Alegre City, South Brazil

    PubMed Central

    Dalla Costa, Elis Regina; Perizzolo, Paulo Fernado; Díaz, Chyntia Acosta; Spies, Fernanda S.; Costa, Lucas Laux; Ribeiro, Andrezza W.; Barroco, Caroline; Schuh, Sandra Jungblut; da Silva Pereira, Marcia Aparecida; Dias, Claudia F.; Gomes, Harrison M.; Unis, Gisela; Zaha, Arnaldo; Almeida da Silva, Pedro E.; Suffys, Philip N.; Rossetti, Maria L. R.

    2013-01-01

    Spoligotyping has shown Mycobacterium tuberculosis strains to be composed of different lineages, and some of them are not just geographically restricted but also affect specific ethnic populations and are associated with outbreaks and drug resistance. We recently described a particular subtype within the Latin American-Mediterranean (LAM) family, called RDRio, widespread in Brazil. Moreover, recent data also indicate that RDRio is present in many countries on all continents and is associated with cavitary disease and multidrug resistance (MDR). To further explore the relationship between RDRio and MDR, we conducted a study in a tuberculosis (TB) reference center responsible for the care of MDR patients in Rio Grande do Sul, the southernmost Brazilian state. From a collection of 237 clinical isolates, RDRio alone was responsible for one-half of all MDR cases, including one large group composed of strains with identical IS6110-restriction fragment length polymorphism (RFLP) and having the LAM5 signature. We additionally had complete data records for 96 patients and could make comparisons between the presence and absence of RDRio. No difference in clinical, radiological or laboratory features was observed, but a significantly greater number of cases with MDR were described in patients infected with an RDRio strain (P = 0.0015). Altogether, RDRio was responsible for 38% of all TB cases. These data support and confirmed previous findings that RDRio is the main agent responsible for TB in Brazil and is associated with drug resistance. Considering that RDRio is a globally distributed genotype, such findings raise concern about the increase in MDR in certain human populations. PMID:23325819

  13. Mycobacterium tuberculosis of the RDRio genotype is the predominant cause of tuberculosis and associated with multidrug resistance in Porto Alegre City, South Brazil.

    PubMed

    Dalla Costa, Elis Regina; Lazzarini, Luiz Claudio Oliveira; Perizzolo, Paulo Fernado; Díaz, Chyntia Acosta; Spies, Fernanda S; Costa, Lucas Laux; Ribeiro, Andrezza W; Barroco, Caroline; Schuh, Sandra Jungblut; da Silva Pereira, Marcia Aparecida; Dias, Claudia F; Gomes, Harrison M; Unis, Gisela; Zaha, Arnaldo; Almeida da Silva, Pedro E; Suffys, Philip N; Rossetti, Maria L R

    2013-04-01

    Spoligotyping has shown Mycobacterium tuberculosis strains to be composed of different lineages, and some of them are not just geographically restricted but also affect specific ethnic populations and are associated with outbreaks and drug resistance. We recently described a particular subtype within the Latin American-Mediterranean (LAM) family, called RD(Rio), widespread in Brazil. Moreover, recent data also indicate that RD(Rio) is present in many countries on all continents and is associated with cavitary disease and multidrug resistance (MDR). To further explore the relationship between RD(Rio) and MDR, we conducted a study in a tuberculosis (TB) reference center responsible for the care of MDR patients in Rio Grande do Sul, the southernmost Brazilian state. From a collection of 237 clinical isolates, RD(Rio) alone was responsible for one-half of all MDR cases, including one large group composed of strains with identical IS6110-restriction fragment length polymorphism (RFLP) and having the LAM5 signature. We additionally had complete data records for 96 patients and could make comparisons between the presence and absence of RD(Rio). No difference in clinical, radiological or laboratory features was observed, but a significantly greater number of cases with MDR were described in patients infected with an RD(Rio) strain (P = 0.0015). Altogether, RD(Rio) was responsible for 38% of all TB cases. These data support and confirmed previous findings that RD(Rio) is the main agent responsible for TB in Brazil and is associated with drug resistance. Considering that RD(Rio) is a globally distributed genotype, such findings raise concern about the increase in MDR in certain human populations.

  14. [Evolution of residual risk for HIV, HCV and HBV, from 1999 to 2010, in blood donations of the Centro Hospitalar S. João, EPE, Porto, Portugal].

    PubMed

    Koch, Carmo; Araújo, Fernando

    2013-01-01

    Introdução/Objectivo: A monitorização do risco residual infeccioso pela transfusão, é importante pois permite avaliar a melhoria alcançada na segurança das dádivas de sangue e adoptar políticas adequadas de redução dos riscos. Este estudo calcula as estimativas da taxa de incidência e do risco residual infeccioso para as infecções pelo vírus da imunodeficiência humana (VIH), vírus da hepatite B (VHB) e vírus da hepatite C (VHC), entre 1999 e 2010. Os dados foram analisados em períodos de quatro anos (1999-2002, 2003-2006 e 2007-2010) e as estimativas foram comparadas com as obtidas previamente, para dádivas ocorridas entre 1991 e 1998.Material e Métodos: O estudo incluiu 209 640 colheitas de sangue, provenientes de 42 634 dadores regulares, voluntários e não remunerados. Para o cálculo do risco residual infeccioso, utilizamos o modelo matemático taxa de incidência-período de janela, descrito por Schreiber et al. Todas as dádivas foram rastreadas de acordo com a legislação portuguesa. Em Janeiro de 2001 foi implementado, em todas as dádivas de sangue, o teste de ácidos nucleicos em minipool, para o rastreio simultâneo de ácido ribonucleico (ARN) VIH-1 e VHC (Cobas Amplicor Ampliscreen-Roche©) o qual foi substituído, em Janeiro de 2007, pelo rastreio simultâneo de ácido desoxirribonucleico VHB e de ácido ribonucleico VHC e VIH-1/VIH-2, em minipool (Cobas TaqScreen MPX Test-Roche©).Resultados: O risco residual infeccioso de uma dádiva em período de janela é muito reduzido e tem diminuído ao longo dos anos. Após a implementação de teste de ácidos nucleicos em minipool para os três vírus, a probabilidade de colhermos uma dádiva infecciosa e não detectada pelos testes de rastreio foi de 1/1,67 milhões de dádivas para o vírus da imunodeficiência humana, de 1/3,33 milhões para o vírus da hepatite C e de 1/526 000 para o vírus da hepatite B.Conclusões: Durante os 12 anos em estudo verificamos uma diminuição do risco residual infeccioso de cinco vezes para o vírus da imunodeficiência humana e vírus da hepatite B, e de 32 vezes para o vírus da hepatite C. Se compararmos o período 1991-1998 com o último período do estudo, 2007-2010, ou seja, durante 20 anos, a diminuição é relevante, verificando-se uma diminuição do risco para vírus da imunodeficiência humana, vírus da hepatite B e vírus da hepatite C, na ordem de 19, seis e 54 vezes respectivamente.

  15. [Kidney transplantation in HIV positive patients: two case reports from Hospital de Clínicas de Porto Alegre initial experience].

    PubMed

    Spuldaro, Fábio; Ribeiro, Adriana Reginato; Vicari, Alessandra Rosa; Denicol, Nancy Tamara; Dini, Leonardo Infantini; dos Santos, Emanuel Burck; Pegas, Karla Laís; Gonçalves, Luiz Felipe Santos; Manfro, Roberto Ceratti

    2012-01-01

    Recently kidney transplantation has become an accepted treatment modality for the treatment of HIV infected patients with end-stage renal diseases. For such treatment it is required stability of clinical and laboratory parameters related to HIV infection and the use of highly active antiretroviral therapy. In this report we present the first two cases in Brazil of patients with HIV infection transplanted with organs from deceased donors performed successfully in our institution. The interactions between immunosuppressive and antiretroviral drugs, the co-infections, cardiovascular risk profile and the high incidence of acute rejection remain the major problems to be dealt with in these patients.

  16. [Resources Families Projects (ISPES) in the Social and Political Context of the Nineties: Porto Torres (Sardinia), Regione Calabria, and Lavello (Basilicata).

    ERIC Educational Resources Information Center

    1999

    The Resource Families project experiments with new ways of meeting information, support, and assistance needs of Italian families with infants and defines new directions and procedures to inform the development of regional social policies in Italy. The project, funded through the Bernard van Leer Foundation and managed by ISPES (Instituto per la…

  17. Effectiveness of the back school program for the performance of activities of daily living in users of a basic health unit in Porto Alegre, Brazil

    PubMed Central

    Bartz, Patrícia Thurow; Vieira, Adriane; Noll, Matias; Candotti, Cláudia Tarragô

    2016-01-01

    [Purpose] Primary care is considered the gateway to the Brazilian public health system and is responsible for managing the most prevalent problems in the population. In this study, the effects of Back School on pain, functionality, and the performance of activities of daily living (ADL) in users with chronic musculoskeletal pain were evaluated. [Subjects and Methods] Forty-four users (33 females and 11 males) participated in Back School, with five two-hour theoretical and practical meetings held once a week. The assessment instruments used were as follows: (a) a circuit evaluation of posture dynamics recorded on video, (b) an observational instrument of ADL using video, (c) anamnesis, (d) the visual analogue scale, and (e) the Oswestry Disability Index. [Results] The results showed decreased pain intensity, improved functionality, and the recovery of ADL. [Conclusion] The Back School program is an effective health education strategy for users with chronic musculoskeletal pain. PMID:27799699

  18. Comparative research on medicine application with 0.53-um, 1.06-um, and 1.32-um Nd:YAG lasers

    NASA Astrophysics Data System (ADS)

    Li, Yahua; Li, Zhenjia; Zhu, Changhong; Huang, Yizhong

    1996-09-01

    Because of its high power and excellent optical features, laser has almost been applied to everywhere of medical research and clinic. Over the past several years, laser medical has achieved a rapid progress, and laser medical instruments has developed promptly, each new wavelength can be successfully applied in diagnostic and treatment of diseases. Among the medical lasers, Nd:YAG solid-state laser systems have proven useful in surgical use operate, such as neurosurgery, gastroenterology, cardioangiology, urology, gynecology, dermatology and ENT. As with other solid-state lasers, the Nd:YAG laser can be made to emit various wavelengths by means of suitable resonator configurations and some newest solid-state laser technology, pumped by the Krypton lamp, the Nd:YAG laser at room temperature exhibits transition at 1.06 micrometer Nd:YAG, using nonlinear crystal and Q-switch to double its frequency can attain 0.53 micrometer green beam. In our laser systems, the efficiency at 1.06 micrometer is more than 3 percent, an efficiency of 0.5 percent at 1.32 micrometer and 0.53 micrometer can be attained. For a power of 100w at 1.06 micrometer, 15w at 1.32 micrometer and 0.53 micrometer can therefore be produced. All of three kinds Nd:YAG laser hold these characteristics: high output power; optical fiber transition that can be cooperated with endoscope. The paper mainly discusses laser operating characteristics and clinic applications of three kinds wavelengths at 0.53 micrometer 1.06 micrometer and 1.32 micrometer Nd:YAG laser systems.

  19. [The anatomical variations of the extensor muscles of the hand fingers].

    PubMed

    Melo, Catarina; Coelho, Paulo; Bernardes, António

    2013-01-01

    Introdução: Os músculos extensores dos dedos da mão estão sujeitos a múltiplas variações, algumas bastante frequentes.Material e Métodos: Foi efectuada a dissecção da região posterior do antebraço e mão de dois cadáveres, documentando-se as variações anatómicas encontradas.Resultados: No Caso 1 o extensor comum dos dedos emitia cinco tendões: um para o 2º dedo, um para o 3º dedo, dois para o 4º dedo e um para o 5º dedo; o extensor próprio do indicador emitia dois tendões: um para o dedo indicador e um para o 3º dedo. No Caso 2 o extensor comum dos dedos emitia quatro tendões: um tendão que se unia ao tendão do longo extensor do polegar, um para o 2º dedo, um para o 3º dedo e um para o 4º dedo que, por sua vez, emitia um tendão que se unia ao tendão do extensor do dedo mínimo; o extensor próprio do indicador emitia dois tendões: um para o dedo indicador e outro para o 3º dedo; o extensor do dedo mínimo emitia dois tendões para o 5º dedo.Discussão/Conclusões: A existência de um tendão duplo do extensor comum dos dedos para o 4º dedo tem sido verificada frequentemente em alguns estudos. É raro existir um tendão do extensor comum dos dedos para o longo extensor do polegar. Um tendão duplo do extensor do dedo mínimo pode ocorrer em 60 a 90% dos casos em alguns estudos. O conhecimento das variações mais frequentes dos tendões dos extensores dos dedos é importante para a prática cirúrgica.

  20. The Shadow of a Gnomon Along a Year: Routine Observations and Teaching of Apparent Motion of the Sun and the Four Seasons. (Spanish Title: La Sombra de un Gnomon lo Largo de un Año: Observaciones de Rutina y la Enseñanza del Movimiento Aparente del Sol y Las Cuatro Estaciones.) A Sombra de um Gnômon ao Longo de um Ano: Observações Rotineiras e o Ensino do Movimento Aparente do Sol E das Quatro Estações

    NASA Astrophysics Data System (ADS)

    Trogello, Anderson Giovani; Danhoni Neves, Marcos Cesar; de Carvalho Rutz da Silva, Sani

    2013-12-01

    , al solsticio de junio, al equinoccio de septiembre y al solsticio de diciembre. Además, se dictaron clases teóricas en la sala de aula. Estos métodos buscaron construir conceptos en torno al movimiento aparente del Sol y la sucesión de las estaciones. Teniendo en cuenta los resultados de las actividades se aplicó una evaluación cuyos datos demuestran la existencia de un aprendizaje deseado por los estudiantes en cuanto a: el reconocimiento de los puntos cardinales, la descripción del movimiento solar aparente y la aparición de las estaciones y su alternancia a partir de observaciones astronómicas visuales sin instrumentos. Muitas concepções alternativas são reconhecidas entre os diversos grupos de estudantes, em especial nos da educação básica. Dentre elas, o movimento aparente do Sol, por mais quotidiano que seja, proporciona variadas interpretações. Deste modo, observar e registrar o movimento dos astros na abóboda celeste é uma tarefa necessária ao ensino de Astronomia. O trabalho que ora se apresenta propõe a apresentação dos resultados da observação do movimento aparente do Sol por intermédio da marcação da sombra de um gnômon vertical por alunos de uma turma do sexto ano do ensino fundamental de uma escola do campo do Paraná. O projeto em si ocorreu em quatro etapas, em datas próximas do equinócio de março, do solstício de junho, do equinócio de setembro e do solstício de dezembro. Além disso, foram desenvolvidas aulas teóricas em sala de aula. Tais métodos buscaram construir conceitos em torno da movimentação aparente do Sol e da alternância das estações do ano. Diante dos resultados provenientes das atividades desenvolvidas foi aplicada uma avaliação e os dados demonstraram um aprendizado desejado dos alunos quanto: ao reconhecimento dos pontos cardeais; à descrição do movimento solar aparente e a ocorrência das estações do ano e sua alternância a partir de observações astronômicas a olho nu.

  1. Astronomy in High School: Using a Mini-Planetarium to Understand Details of the Apparent Movement of Stars. (Spanish Title: Astronomía en la Escuela Secundaria: Comprendiendo los Detalles del Movimiento Aparente de Las Estrellas con un Miniplanetario.) Astronomia no Ensino Médio: Compreendendo Detalhes do Movimento Aparente das Estrelas com um Miniplanetário

    NASA Astrophysics Data System (ADS)

    dos Santos Leão, Demetrius

    2013-07-01

    en la comprensión de estas cuestiones y demostraron un gran interés por esta metodología. O objetivo deste artigo é apresentar parte dos resultados obtidos com a intervenção feita como projeto da dissertação de mestrado do autor, que consistiu no desenvolvimento de um conjunto de aulas de Astronomia, com alunos do 1º Ano do Ensino Médio de uma escola da rede privada do Distrito Federal (Brasília, Brasil), empregando como recurso principal um material didático chamado miniplanetário (MP). Utilizando como pressuposto teórico norteador dessas aulas as ideias de contextualização e dialogicidade de Paulo Freire, foi proposta aos estudantes a montagem e utilização desse recurso em uma sessão de planetário. Durante o projeto, enfatizaram-se assuntos como a trajetória aparente das estrelas para o céu de Brasília, a localização dos pontos cardeais a partir da constelação do Cruzeiro do Sul, as cores das estrelas e as estrelas vistas de uma determinada localidade. Apurou-se que os alunos apresentaram melhoria na compreensão desses assuntos, bem como demonstraram expressiva empolgação com essa metodologia desenvolvida.

  2. Thermal levitation of 10 um size particles in low vacuum

    NASA Astrophysics Data System (ADS)

    Fung, Long Fung Frankie; Kowalski, Nicholas; Parker, Colin; Chin, Cheng

    2016-05-01

    We report on experimental methods for trapping 10 micron-sized ice, glass, ceramic and polyethylene particles with thermophoresis in medium vacuum, at pressures between 5 Torr and 25 Torr. Under appropriate conditions particles can launch and levitate robustly for up to an hour. We describe the experimental setup used to produce the temperature gradient necessary for the levitation, as well as our procedure for generating and introducing ice into the experimental setup. In addition to analyzing the conditions necessary for levitation, and the dependence of levitation on the experimental parameters, we report on the behavior of particles during levitation and ejection, including position and stability, under different pressures and temperatures. We also note a significant discrepancy between theory and data, suggesting the presence of other levitating forces.

  3. Astronomy around 1700. (German Title: Astronomie um 1700)

    NASA Astrophysics Data System (ADS)

    Herbst, Klaus-Dieter

    The book focuses on Gottfried Kirch und Olaus Römer, two scholars who played a leading role in astronomy around 1700. It contains an annotated edition of the letter by Gottfried Kirch to Olaus Römer of October 25, 1703. Kirch was the astronomer of the Berlin Academy of Sciences since 1700, recognized both as astronomical calculator and as observer - Römer was director of the Copenhagen Observatory and was the first who determined the speed of light. Kirch's letter to Römer of October 1703, given here together with several addenda, was not a letter in the modern sense, but a treatise of broad contents, dealing with different astronomical items of that time: the problem of determining stellar and planetary positions, the subjective view on contemporaries, the methods of astronomical calculations, the discovery of comets and other questions are described in Kirch's vivid words. Numerous annotations by the editor explain the astronomy of that time. The editor leads the reader step by step through the methods of astronomical calculations, which become clear and understandable. A complete bibliography of works by and about Kirch and a list of known archival sources are added.

  4. Ex Femina Lux: Frauenbildung als Aufgeklarte Alternative um 1700.

    ERIC Educational Resources Information Center

    Lechner, Elmar

    1991-01-01

    Explores the role of women in eighteenth-century Germany's University of Halle. Reports that the school admitted both male and female students. Explains that the university's central principle, the conquest of the world through personal effort, was viewed as well suited to women, who had not been tainted by academic tradition. (SG)

  5. FORCAST: a facility 5- to 40-um camera for SOFIA

    NASA Astrophysics Data System (ADS)

    Keller, Luke D.; Herter, Terry L.; Stacey, Gordon J.; Gull, George E.; Pirger, Bruce; Schoenwald, Justin; Bowman, Harry; Nikola, Thomas

    2000-06-01

    We are constructing a facility-class, mid/far-infrared camera for the Stratospheric Observatory for Infrared Astronomy (SOFIA). The Faint Object infraRed CAmera for the Sofia Telescope (FORCAST) is a two-channel camera with selectable filters for continuum imaging in the 5 - 8, 17 - 25 micron, and/or 25 - 40 micron regions. The design supports simultaneous imaging in the two-channels. Using the latest 256 X 256 Si:As and Si:Sb blocked-impurity-band detector array technology to provide high-sensitivity wide- field imaging. FORCAST will sample images at 0.75 arcsec/pixel and have a 3.2' X 3.2' instantaneous field- of-view. Imaging is diffraction limited for lambda > 15 microns.

  6. Um Olhar sobre "Beleza Americana" (A Look at "American Beauty").

    ERIC Educational Resources Information Center

    Bissoto, Maria Luisa

    2000-01-01

    Discusses the film "American Beauty" in light of a reading of Karl Marx. Finds that the film shows the circularity which marks bourgeois society, even though the rhythm of industry and renovation of the society masks it. States that Marx praises the industry, invention, and innovation of the bourgeoisie. (BT)

  7. Exploring Ho-Nee-Um in the Spring.

    ERIC Educational Resources Information Center

    Madison Public Schools, WI.

    Appreciation and concern for the preservation of our natural resources by all citizens is the primary concern of this teacher's guide for use in grades three and four. It employs the use of a filmstrip in conjunction with a local nature trail, to guide students in developing awareness--by looking closely, listening, touching, and smelling. The…

  8. A Winter Walk at Ho-Nee-Um.

    ERIC Educational Resources Information Center

    Irwin, Harriet; And Others

    Appreciation and concern for the preservation of our natural resources by all citizens is the primary concern of this teacher's guide for use in the lower primary grades. It employs the use of a filmstrip in conjunction with a local nature trail, to guide students in developing awareness - by looking closely, listening, touching, and smelling. The…

  9. Um Olhar sobre "Beleza Americana" (A Look at "American Beauty").

    ERIC Educational Resources Information Center

    Bissoto, Maria Luisa

    2000-01-01

    Discusses the film "American Beauty" in light of a reading of Karl Marx. Finds that the film shows the circularity which marks bourgeois society, even though the rhythm of industry and renovation of the society masks it. States that Marx praises the industry, invention, and innovation of the bourgeoisie. (BT)

  10. Grant UM1CA167462 | Division of Cancer Prevention

    Cancer.gov

    The Division of Cancer Prevention (DCP) conducts and supports research to determine a person's risk of cancer and to find ways to reduce the risk. This knowledge is critical to making progress against cancer because risk varies over the lifespan as genetic and epigenetic changes can transform healthy tissue into invasive cancer.

  11. High-sensitivity (25-um pitch) microbolometer FPAs

    NASA Astrophysics Data System (ADS)

    Murphy, Daniel F.; Ray, Michael; Wyles, Richard; Asbrock, James F.; Lum, Nancy A.; Kennedy, Adam; Wyles, Jessica; Hewitt, C.; Graham, Glen E.; Horikiri, Tad; Anderson, John S.; Bradley, Daryl; Chin, Richard; Kostrzewa, Thomas

    2001-11-01

    RIO has achieved a significant technical breakthrough in uncooled FPAs by reducing the pixel size by a factor of two while maintaining state-of-the-art sensitivity. Raytheon has produced high-quality 320 by 240 micro bolometer FPAs with 25 micrometers pitch pixels. The 320 by 240 FPAs have a sensitivity that is comparable to micro bolometer FPAs with 50 micrometers pixels. The average NETD value for these FPAs is about 35 mK with an f/1 aperture and operating at 30 Hz frame rates. Good pixel operability and excellent image quality have been demonstrated. Pixel operability is greater than 99 percent on some FPAs, and uncorrected responsivity nonuniformity is less than 4 percent. The micro bolometer detectors also have a relatively fast thermal time constant of approximately 10 msec. This state-of-the-art performance has been achieved as a result of an advanced micromachining fabrication process. The process allows maximization of both the thermal isolation and the optical fill-factor. The reduction in pixel size offers several potential benefits for IR systems. For a given system resolution requirement, the 225 micrometers pixels allow a factor of two reduction in both the focal length and aperture size of the sensor optics. The pixel size reduction facilitates a significant FPA cost reduction since the number of die printed on a wafer can be increased. The pixel size reduction has enabled the development of a large-format 640 by 512 FPA array applicable to wide-field-of-view, long range surveillance and targeting missions, and a 160 by 128 array where applications for miniaturization and temperature invariance are required as well as low cost and low power.

  12. Spatial deconvolution of IRAS galaxies at 60 UM

    NASA Technical Reports Server (NTRS)

    Low, Frank J.

    1987-01-01

    Using IRAS in a slow scan observing mode to increase the spatial sampling rate and a deconvolution analysis to increase the spatial resolution, several bright galaxies were resolved at 60 micron. Preliminary results for M 82, NGC 1068, NGC 3079 and NGC 2623 show partially resolved emission from 10 to 26 arcsec., full width at half maximum, and extended emission from 30 to 90 arcsec. from the center. In addition, the interacting system, Arp 82, along with Mark 231 and Arp 220 were studied using the program ADDSCAN to average all available survey mode observations. The Arp 82 system is well resolved after deconvolution and its brighter component is extended; the two most luminous objects are not resolved with an upper limit of 15 arcsec. for Arp 220.

  13. IUE ultraviolet observations of W UM a Stars

    NASA Technical Reports Server (NTRS)

    Dupree, A. K.; Preston, S.

    1981-01-01

    International Ultraviolet Explorer observations of four W UMa eclipsing binary systems (44 Boo, VW Cep, W UMa, and epsilon) are discussed. The stars generally show large surface fluxes of high temperature lines (C II, C IV, N V, Si IV) which may result from the high rotational velocities forced by synchronous rotation. High dispersion spectra of the 44 Boo system in the Mg II line enable the individual stellar components to be identified. The line widths and phase variations are consistent with the optically determined spectroscopic orbit. Circumstellar absorption of Mg II may be presented at selected phases.

  14. [C II] 158 um optical depth and self-absorption

    NASA Astrophysics Data System (ADS)

    Guevara, Cristian

    2015-10-01

    Recent observations with SOFIA/GREAT at very high velocity resolution have shown for two prototype PDR sources (Orion B and M17 SW) that the [CII] line has much higher opacities, ranging from 1 to 3, than predicted by simple PDR models and is heavily affected by self-absorption. Under these conditions, line ratios of fine structure lines derived from spectrally unresolved observations and line-integrated intensities, when blindly used to derive physical source properties such as UV-intensity and density in both Galactic and extragalactic environments, give questionable results. In order to understand in what fraction of sources the [CII] emission is affected, and if so, how strongly it is affected by such high, unexpected optical depth and self-absorption, we propose to use the high sensitivity and resolving power of the new upGREAT receiver array for a systematic study of the [CII] opacity and the possible effects of self-absorption with deep integrations of the [13CII] line, by observing several PDR sources covering a range of physical properties and conditions.

  15. Grant UM1CA182883 | Division of Cancer Prevention

    Cancer.gov

    The Division of Cancer Prevention (DCP) conducts and supports research to determine a person's risk of cancer and to find ways to reduce the risk. This knowledge is critical to making progress against cancer because risk varies over the lifespan as genetic and epigenetic changes can transform healthy tissue into invasive cancer.

  16. Handling a Tricky Verb: Es handelt sich um "handeln".

    ERIC Educational Resources Information Center

    Kuhn-Osius, K. E.

    1987-01-01

    Attempts to establish a practical approach to teaching the various meanings of the German verb "handeln". Exercises that aid advanced students in understanding the verb's meaning include a complete list of all possible meanings of the verb, as well as sample sentences using the verb in a wide range of contexts. (LMO)

  17. [A community-based study of stroke code users in northern Portugal].

    PubMed

    Moutinho, Mariana; Magalhães, Rui; Correia, Manuel; Silva, M Carolina

    2013-01-01

    Introdução: Em 2002 Portugal detinha uma das mais altas taxas de mortalidade por doenças cerebrovasculares entre os países europeus. Várias estratégias foram adoptadas para melhorar a prevenção da doença e o seu tratamento na fase aguda, entre as quais a criação da Via Verde do Acidente Vascular Cerebral. O objectivo deste trabalho é descrever a utilização e resultados desta estratégia no contexto de um registo prospectivo comunitário na Região Norte de Portugal. Material e Métodos: Foram registados todos os AVCs ocorridos entre 1 de Outubro de 2009 e 30 de Setembro de 2010 nos utentes inscritos no agrupamento de centros de saúde do Porto Ocidental e nos de Mirandela e Vila Pouca de Aguiar. Para a detecção de casos utilizaram-se múltiplas fontes de informação: notificação via WEB, e-mail, Alerta P1 e pesquisas sistemáticas em registos disponibilizados pelas entidades envolvidas - urgências hospitalares, listas de altas, procedimentos de diagnóstico, óbitos, Via Verde do Acidente Vascular Cerebral e serviço de atendimento de situações urgentes. Resultados: Ocorreram 600 AVCs em 241 000 habitantes (taxa de incidência de 250 / 100 000), dos quais 434 foram primeiros na vida (180 / 100 000). Foram registados 72 acessos à Via Verde do Acidente Vascular Cerebral, dos quais 66,7% foram diagnosticados como AVC. Considerando os quatro critérios de activação (idade ≤ 80 anos, independência funcional, sinais/sintomas do AVC e tempo após episódio ≤ 3 horas), só 15,9% dos doentes a poderiam utilizar e, dos utilizadores, apenas 56,3% satisfaziam esses critérios. Dos doentes com critérios de activação, foram internados 96,3% pela VV pré-hospitalar, 83,3% pela VV intra/inter-hospitalar e 64,0% dos restantes; a fibrinólise foi realizada em 77,3%, 36,4% e 17,4% dos doentes com enfarte cerebral, respectivamente. O Rankin pós- AVC é mais grave nos utilizadores da VV pré-hospitalar (70,3% vs. 35,3%), mas estes apresentam mais

  18. Discussions about the Nature of Science in a Course on the History of Astronomy. (Spanish Title: Discusiones sobre la Naturaleza de la Ciencia en un Curso sobre Historia de la Astronomía.) Discussões sobre a Natureza da Ciência em um Curso sobre a História da Astronomia

    NASA Astrophysics Data System (ADS)

    Pires de Andrade, Victória Flório; L'Astorina, Bruno

    2010-07-01

    There are an increasing number of researches in science education that affirm the importance of discussions on the "nature of science" in basic education level as well as in teacher training. The history of science applied to education is a way to contextualize epistemological discussions, allowing both the understanding of scientific content and learning about science concepts. We present some reasonably consensual definitions on the nature of science that have been widely discussed by the academic community. We show also some episodes in the history of astronomy which can lead to discussions involving some aspects of the nature of science, and how they can do it. Hay un número creciente de investigaciones en la enseñanza de las ciencias que afirman la importancia de debates sobre la "naturaleza de la ciencia" en la educación básica y formación del profesorado. La historia de la ciencia aplicada a la educación es una manera de contextualizar los debates de la epistemología, lo que permite tanto la comprensión de los contenidos científicos como el aprendizaje de conceptos científicos. En esto trabajo, presentamos algunas definiciones bastante consensuales sobre la naturaleza de la ciencia que han sido ampliamente discutidas por la comunidad académica y mostramos cómo algunos episodios en la historia de la astronomía pueden llevar a discusiones sobre algunos aspectos de la naturaleza de la ciencia. Há um número crescente de pesquisas na área de ensino de ciências que afirmam a importância de discussões sobre a "natureza da ciência" na educação básica e na formação de professores. A história da ciência aplicada ao ensino é uma maneira de contextualizar discussões epistemológicas, permitindo tanto a compreensão de conteúdos científicos quanto o aprendizado de noções sobre as ciências. Neste trabalho apresentamos algumas definições razoavelmente consensuais sobre a natureza da ciência que foram amplamente discutidas pela

  19. GEO-CAPE application, demonstrated for CO by the IIP Tropospheric Infrared Mapping Spectrometers (TIMS), and scaled to an expanded application that adds the 9.6, 3.3 and 3.6 um bands for multi-layer tropospheric ozone and for HCHO

    NASA Astrophysics Data System (ADS)

    Kumer, J. B.; Roche, A. E.; Rairden, R. L.; Jamieson, T. H.; Mergenthaler, J. L.; Chatfield, R. B.

    2008-12-01

    The NASA Earth Science Technology Office (ESTO) Instrument Incubator Program (IIP) Tropospheric Infrared Mapping Spectrometers (TIMS) have been developed to demonstrate measurement capability, when deployed in space, for multi-layer retrieval of CO from spectral measurements acquired in the solar reflective (SR) region ~ 4281 to 4301 cm-1 and in the thermal InfraRed (TIR) region ~ 2110 to 2165 cm 1. As presented at this meeting in our poster "...multi-layer CO retrieval from atmospheric data..." very encouraging retrieval for CO, H2O, CH4 and albedo were obtained in an operational mode of ground based atmospheric observations that simulated space based operations in an application that would meet Decadal Survey GEO- CAPE air quality observation requirements for coverage, footprint size and refresh time. In this presentation we'll describe the details of how the ground based operations map to the space based operations. We will discuss concept details including [a] the approach for instrument cooling, [b] the scanning mirror and telescope system that would provide input to the TIMS in a way that meets the GEO-CAPE measurement requirements, [c] telemetry requirements, and [d] the scaling of retrieval precision from the ground based actuals to the space based operations. For example, the ground based actual TIMS column precisions for retrieval from the SR data scale to space deployed TIMS column retrieval precisions for CO(=8.6%), H2O(=3.7%), CH4(=0.9%) and for albedo(=0.2%) on the GEO-CAPE minimum footprint. We'll also present the actuals, and the scaling to the GEO-CAPE case, for multi-layer CO and H2O retrieval from the combined SR and TIR data sets. The required aperture is quite small, 7.5 cm. We will also present a straight forward approach to expand the GEO-CAPE TIMS concept to additional spectral regions near 3.3, 3.6 and 9.6 um that will provide for multi-layer retrieval of tropospheric ozone, and for HCHO column. The approach adds relatively small mass, but

  20. Right hepatic artery aneurysm.

    PubMed

    Bernal, Astrid Del Pilar Ardila; Loures, Paulo; Calle, Juan Cristóbal Ospina; Cunha, Beatriz; Córdoba, Juan Camilo

    2016-01-01

    We report a case of an aneurysm of the right hepatic artery and its multidisciplinary management by general surgery, endoscopy and radiology services. Being a case of extremely low incidence, it is important to show its diagnostic and therapeutic approach. RESUMO Relatamos um caso de aneurisma da artéria hepática direita conduzido de forma multidisciplinar pelos Serviços de Cirurgia Geral, Endoscopia e Radiologia. Em se tratando de caso de incidência baixíssima, é importante mostrar o enfoque diagnóstico e terapêutico usado em seu manejo.

  1. Astronomy Teaching and Teachers Continuing Education: the Interdisciplinarity during a Total Lunar Eclipse. (Spanish Title: Enseñanza de la Astronomía y la Formación Continua de Profesores: la Interdisciplinariedad Durante un Eclipse Total de Luna.) Educação EM Astronomia E Formação Continuada de Professores: a Interdisciplinaridade Durante um Eclipse Lunar TOTAL

    NASA Astrophysics Data System (ADS)

    Langhi, Rodolfo

    2009-07-01

    This paper describes how 67 teachers from 23 cities, could awaken, in students, the scientific interest, using a natural astronomical phenomenon: a total lunar eclipse. Before and after of eclipse, meetings for continuing education were characterized by interdisciplinarity of astronomy and the importance of these observations. Working groups were formed by teachers and students, who organized the survey data, mobilizing the people in their cities. The results point ways about how to provide the scientific culture and the motivation to learn science in students, using approaches between the following communities: scientific, amateur and school. En este artículo se describe cómo 67 profesores de 23 ciudades, despertó el interés científico en los estudiantes mediante un fenómeno astronómico: un eclipse total de Luna. Antes y después del eclipse, reuniones para la formación continua se centraron en la interdisciplinariedad de la astronomía, y la importancia de las observaciones de este tipo de fenómeno. Profesores y estudiantes formaron grupos de trabajo para investigar datos durante el eclipse, con el participación de la comunidad en sus ciudades. Los resultados apuntan a las opciones que conducen a la cultura científica y la motivación para aprender la ciencia, utilizando las relaciones de los siguientes grupos: científicos, aficionados y la escuela. Este texto relata como 67 professores, provenientes de 23 cidades, puderam despertar, nos alunos, o interesse científico utilizando um fenômeno natural astronômico: um eclipse lunar total. O evento foi precedido e procedido por encontros de formação continuada, onde se caracterizou a interdisciplinaridade da astronomia e a importância das observações de fenômenos como estes. Grupos de trabalho foram formados por professores e alunos, que se organizaram para o levantamento conjunto de dados durante o fenômeno, além do envolvimento da comunidade em suas respectivas cidades. Os resultados apontam

  2. Eccrine porocarcinoma: cytologic diagnosis by fine needle aspiration biopsy (FNAB).

    PubMed

    Kalogeraki, Alexandra; Tamiolakis, Dimitrios; Tsagatakis, Thomas; Geronatsiou, Katerina; Haniotis, Vrettos; Kafoussi, Maria

    2013-01-01

    Introdução: O porocarcinoma écrino (PE) é um tumor maligno pouco comum dos anexos cutâneos. Trata-se de um adenocarcinoma da glândula sudorípara écrina com propensão para recorrer localmente e para originar metástases ao longo dos gânglios linfáticos regionais. Este artigo apresenta um diagnóstico por citologia aspirativa com agulha fina (CAAF) de um PE, associado ao exame histológico e de imunocito/histoquímica.Caso Clínico: São descritos os achados da citologia de um porocarcinoma écrino numa doente de 76 anos de idade, bem como as características histológicas do tumor cutâneo. A citologia aspirativa revelou que o tumor se caracterizava pela presença de células atípicas malignas com citoplasma basófilo, núcleos hipercromáticos e nucléolos proeminentes. O diagnóstico citológico foi confirmado pela histologia.Conclusões: É crucial obter um diagnóstico pré-operatório preciso de modo a desencadear um plano cirúrgico curativo. A CAAF possibilita uma abordagem pouco invasiva, segura e efectiva, de modo a esclarecer um diagnóstico diferencial exigente.

  3. The Understanding of Astronomy Concepts by Students from Basic Education of a Public School. (Spanish Title: El Entendimiento de Conceptos de Aastronmía Por Los Alumnos de Educación Básica en Una Escuela Pública.) O Entendimento de Conceitos de Astronomia Por Alunos da Educação Básica: O Caso de Uma Escola Pública Brasileira

    NASA Astrophysics Data System (ADS)

    Iria Machado, Daniel; dos Santos, Carlos

    2011-07-01

    movimiento de la Luna, el movimiento aparente del Sol sobre la esfera celeste, los eclipses, las dimensiones y las distancias en el Universo, el brillo de las estrellas y su observación de la Tierra. Si bien ha habido un pequeño progreso en la proporción de respuestas aceptables científicamente cuando se cotejó el octavo grado de la enseñanza primaria con el quinto, y el último año de la enseñanza secundaria con el primero, se observó un predominio de las concepciones alternativas en relación a la mayoría de los temas explorados, que continuó hasta los últimos años de la educación básica. Una comparación con los datos encontrados en investigaciones realizadas en otros contextos socioculturales revelaron, en muchos aspectos, conceptos y dificultades similares expresadas por los estudiantes. Apresentam-se os resultados de uma investigação sobre a compreensão de conceitos astronômicos básicos, da qual participaram 561 estudantes da quinta série do Ensino Fundamental ao terceiro ano do Ensino Médio de uma escola pública da cidade de Foz do Iguaçu. Um teste com 20 questões de múltipla escolha foi aplicado para identificar as concepções mais comuns expressadas pelos alunos. Esse instrumento de coleta de dados foi elaborado com base na literatura sobre concepções alternativas e abordou os seguintes temas: o ciclo dia-noite; os fusos horários; as estações do ano; as fases da Lua; o movimento da Lua; o movimento aparente do Sol na esfera celeste; os eclipses; as dimensões e distâncias no Universo; o brilho das estrelas e sua observação da Terra. Embora se tenha verificado um pequeno progresso na proporção de respostas cientificamente aceitáveis ao se cotejar a oitava série do Ensino Fundamental com a quinta, e a terceira série do Ensino Médio com a primeira, houve o predomínio de concepções alternativas em relação à maior parte dos temas explorados, as quais persistiram até o último ano da Educação Básica. A comparação com

  4. The Practice of Research of a Basic Education Teacher Involving Mental Models of the Phases of the Moon and Eclipses. (Spanish Title: La Práctica de Investigación de un Maestro de Educación BÁsica con El Uso de los Modelos Mentales de Las Fases de la Luna Y Eclipses.) A Prática de Pesquisa de um Professor do Ensino Fundamental Envolvendo Modelos Mentais de Fases da Lua e Eclipses

    NASA Astrophysics Data System (ADS)

    Pessôa Queiroz, Glória; Jubitipan Borges de Sousa, Carlos; Auxiliadora Delgado Machado, Maria

    2009-12-01

    docente. La formación de grupos interinstitucionales para la planificación de la acción y la investigación ha resultado productiva para el trabajo de construcción de conocimiento de apoyo a los procesos educativos en la escuela, mientras que la universidad enriquece su colección de experiencias validadas, considerando los resultados de la educación inicial y continua de maestros. La participación activa del maestro en un grupo de investigación en la universidad lo llevó a reflexiones sobre los posibles caminos didácticos que pueden ser descriptos, analizados y comunicados a los demás docentes. La construcción de una pedagogía propia, que tuvo en cuenta los modelos mentales de los estudiantes sobre los temas básicos de astronomía, y los cambios desarrollados a partir de las lecciones que enseñó, trajeron consecuencias de largo alcance sobre la pedagogía adoptada por el maestro, que ahora incorpora una nueva visión de la ciencia y formas alternativas al diálogo con los estudiantes, los componentes esenciales para un investigador en Educaciónen Ciencias. A inclusão do professor da escola básica no universo da pesquisa é questão controvertida e em pleno debate no meio acadêmico. A oportunidade de trabalho coletivo que incorporou professores de uma escola municipal no Rio de Janeiro a um grupo de ensino de Física da universidade nos possibilitou vislumbrar a ressignificação da função de um professor de Ciências (co-autor deste trabalho) por ele próprio, agora passando a incluir a pesquisa sobre a construção de conhecimento pelos alunos em sua prática como docente. A formação de grupos interinstitucionais para o planejamento de ações e de pesquisas tem-se mostrado produtiva para um trabalho de construção de conhecimentos a fim de subsidiar processos educativos na escola, ao mesmo tempo em que a universidade enriquece seu acervo de experiências validadas criticamente, podendo considerar seus resultados na formação inicial e

  5. Humanization in the Intensive Care: perception of family and healthcare professionals.

    PubMed

    Luiz, Flavia Feron; Caregnato, Rita Catalina Aquino; Costa, Márcia Rosa da

    2017-01-01

    Understanding perceptions of family members and healthcare professionals about humanization at the Intensive Care Unit (ICU) to direct it to an educational action. Exploratory descriptive and qualitative study conducted in an ICU level 3 of a public hospital in Porto Alegre, RS, Brazil, with fourteen subjects, eight family members and six healthcare professionals. Data collection carried out through semi-structured interviews and focus group. Content Analysis was used. Emerged categories were: welcoming; communication; ethical and sensible professionalism; unfavorable aspects; perception on humanization; and religiosity/spirituality. Although the subjects have expressed their perceptions about humanization in different ways, both groups pointed out the same needs and priorities to improve humanization in Intensive Care. From the results, we created a reflective manual of humanizing assistance practices for professionals, a board to facilitate communication of these professionals with patients and a guideline book for family members. Compreender as percepções de familiares e profissionais de saúde sobre humanização na Unidade Terapia Intensiva (UTI) para direcionar a uma ação educativa. Estudo exploratório-descritivo qualitativo, realizado em uma UTI nível III de um hospital público de Porto Alegre/RS com 14 sujeitos, sendo oito familiares e seis profissionais de saúde. Coleta de dados realizada por meio de: entrevistas semiestruturadas e grupo focal. Utilizou-se Análise de Conteúdo. As categorias emergidas foram: acolhida; comunicação; profissionalismo ético e sensível; aspectos desfavoráveis; percepção sobre humanização; e religiosidade/espiritualidade. Apesar dos sujeitos expressarem de maneiras distintas suas percepções sobre humanização, os dois grupos comparados elencaram iguais necessidades e prioridades para o aprimoramento da humanização na Terapia Intensiva. A partir dos resultados, criou-se um Manual Reflexivo de pr

  6. Avidity of IgG for rubella: an evaluation of the need for implementation at the Materno-Infantil Presidente Vargas Hospital in Porto Alegre, Rio Grande do Sul, Brazil.

    PubMed

    Reis, M M; Tessaro, M M; Cruz e Silva, J; Giordano, S A; d'Azevedo, P A

    2004-06-01

    Rubella serum assays performed in the laboratory of the Materno-Infantil Presidente Vargas Hospital (HMIPV) from 1998 to 2002 were reviewed to determine if IgG avidity assays should be implemented. IgG was determined using the Enzyme Linked Fluorescent Assay, ELFA, VIDAS system, bioMerieux or the Microparticle Enzyme Immunoassay, MEIA, Axsym system, Abbott, and IgM was determined using the ELFA, VIDAS system, bioMerieux, a capture format assay. Specific IgG was assayed in 2,863 samples, with positive results for 84% of the patients, for the most part with high levels of antibodies. IgM was assayed in 2,851 samples, being positive in 14 (0.49%) and inconclusive in 25 (0.88%). Serology for toxoplasmosis was also positive or inconclusive in 5 patients. After a cost-effectiveness analysis, it was decided not to implement avidity assays, considering that the HMIPV is a public institution, with limited funding. Difficulties concerning the integration of the Clinical Pathology Service with the Clinical Staff of the institution were also considered.

  7. Proceedings of the International Association for Development of the Information Society (IADIS) International Conference on Cognition and Exploratory Learning in the Digital Age (CELDA) (11th, Porto, Portugal, October 25-27, 2014)

    ERIC Educational Resources Information Center

    Sampson, Demetrios G., Ed.; Spector, J. Michael, Ed.; Ifenthaler, Dirk, Ed.; Isaias, Pedro, Ed.

    2014-01-01

    These proceedings contain the papers of the 11th International Conference on Cognition and Exploratory Learning in the Digital Age (CELDA 2014), October 25-27, 2014, which has been organized by the International Association for Development of the Information Society (IADIS) and endorsed by the Japanese Society for Information and Systems in…

  8. A time for dogma, a time for the Bible, a time for condoms: building a Catholic theology of prevention in the face of public health policies at Casa Fonte Colombo in Porto Alegre, Brazil.

    PubMed

    Seffner, Fernando; Garcia, Jonathan; Muñoz-Laboy, Miguel; Parker, Richard

    2011-01-01

    The Casa Fonte Colombo (CFC) is a religious organisation that assists people living with HIV/AIDS (PLWHA). The funding for its activities comes from public sources such as the Brazilian National STD/AIDS Program as well as the Catholic Church. Capuchin (Franciscan) priests run the CFC and it has an extensive group of volunteers made up mostly of women. Between 2006 and 2009, we observed daily life at the CFC and interviewed priests, volunteers, employees, service providers, and clients. We also attended meetings, group sessions, and celebrations. Everyday actions carried out by the CFC reveal the efforts to resolve the tension between the position of the Catholic Church and the Brazilian state in the politics of AIDS. These efforts affirm that the CFC presents itself as a space where the position of the Catholic Church, as much as the politics of public health, are re-worked, giving way to a progressive act of Catholic prevention and assistance for AIDS that we call 'theology of prevention'.

  9. Prévalence, facteurs associés et prédisposant au syndrome métabolique chez les personnes vivants avec le VIH sous traitement antirétroviral à Porto-Novo en 2014

    PubMed Central

    Adébayo, Alassani; Albert, Dovonou Comlan; Ericie, Sossou; Angelo, Attinsounon Cossi; Jules, Gninkoun; Armand, Wanvoegbe; Séraphin, Ahoui; Léopold, Codjo; Gabriel, Ade

    2015-01-01

    Introduction Le syndrome métabolique est associé aux maladies cardiovasculaires. L'infection au VIH est devenue aujourd'hui une maladie chronique. L'objectif de cette étude est de déterminer la prévalence, les facteurs associés et prédisposant au syndrome métabolique chez les patients infectés par le VIH sous traitement antirétroviral. Méthodes Il s'est agi d'une étude transversale, descriptive et analytique. La population d’étude est constituée des patients vivant avec le VIH sous antirétroviral suivis au Centre Hospitalier Universitaire de l'Ouémé-Plateau. Le syndrome métabolique a été défini selon les critères de la Fédération Internationale du Diabète. Résultats La population était constituée de 244 patients. La prévalence du syndrome métabolique était de 18,03% avec une prédominance féminine (74,6%). La moyenne d’âge était de 40,7 ± 9,71 ans. Les facteurs associés au syndrome métabolique étaient le sexe féminin, la sédentarité, l'antécédent d'HTA, le surpoids, l'apport énergétique élevé, l'apport lipidique élevé, la consommation d'alcool, la consommation de tabac et l'hypercholestérolémie. Les facteurs prédisposant au syndrome métabolique étaient la présence de l'HTA, le tour de taille élevé, l'hyperglycémie, l'hypocholestérolémie HDL et l'hypertriglycéridémie. Conclusion Le syndrome métabolique est fréquent chez les patients infectés par le VIH sous traitement antirétroviral. Une prévention prenant en compte les facteurs associés et prédisposant s'avère nécessaire. PMID:26966492

  10. Designing and evaluating a health education session on respiratory infections addressed to caregivers of children under three years of age attending day-care centres in Porto, Portugal: A community-based intervention.

    PubMed

    Alexandrino, Ana Manuela Ferreira da Silva; Santos, Rita Isabel Garrido Vieira Dos; Melo, Maria Cristina Damas Argel de; Bastos, José Adelino Mesquita

    2017-12-01

    Acute respiratory infections (ARI) are common in children, increasing the pressure on clinicians to prescribe antibiotics and affecting public health Objectives: This study aimed to design a health education session (HES) for caregivers of children, and to evaluate its effects on caregivers' needs, as well as on their knowledge and attitudes concerning ARI. A generalized model of developing, implementing and evaluating a community-based intervention was followed, including caregivers of children under three years of age. Caregivers were randomly distributed into an intervention group (IG) (n = 41) and a control group (CG) (n = 51) and the HES was administered to the IG. The caregivers' needs as well as knowledge of and attitudes to ARI were evaluated in both groups, before (M0) and two months after the HES (M1). At M0 the caregivers from both groups had 'some or great need' about all HES domains; at M1 the caregivers in the IG expressed 'no or low need', whereas the CG maintained 'some or great need' about all HES domains (0.011 ≤ P ≤ .047). Concerning caregivers' knowledge of and attitudes to ARI, at M1 there was a higher frequency of caregivers with right answers in the IG than in the CG (IG =7.5 ± 1 versus CG =6.0 ± 2; P = .000). Those differences occurred in domain (e) nasal clearance techniques, revealing a higher percentage of caregivers who used correctly nasal irrigation (P = .000), nasal aspirators (0.000 ≤P ≤ .001) and nebulization (P = .000) in IG. The HES met the caregivers' needs regarding ARI and increased their knowledge and attitudes towards ARI, especially regarding nasal clearance techniques.

  11. A time for dogma, a time for the Bible, a time for condoms: Building a Catholic theology of prevention in the face of public health policies at Casa Fonte Colombo in Porto Alegre, Brazil

    PubMed Central

    Seffner, Fernando; Garcia, Jonathan; Muñoz-Laboy, Miguel; Parker, Richard

    2011-01-01

    The Casa Fonte Colombo (CFC) is a religious organisation that assists people living with HIV/AIDS (PLWHA). The funding for its activities comes from public sources such as the Brazilian National STD/AIDS Program as well as the Catholic Church. Capuchin (Franciscan) priests run the CFC, and it has an extensive group of volunteers made up mostly of women. Between 2006 and 2009, we observed daily life at the Casa Fonte Colombo and interviewed priests, volunteers, employees, service providers, and clients. We also attended meetings, group sessions, and celebrations. Everyday actions carried out by the CFC reveal the efforts to resolve the tension between the position of the Catholic Church and the Brazilian state in the politics of AIDS. These efforts affirm that the Casa Fonte Colombo presents itself as a space where the position of the Catholic Church, as much as the politics of public health, are re-worked, giving way to a progressive act of Catholic prevention and assistance for AIDS, that we call “theology of prevention.” PMID:21834734

  12. Providing Meaningful Learning for Students of the Sixth Grade of Middle School: a Study on the Moon Phases. (Breton Title: Propiciando Aprendizagem Significativa Para Alunos do Sexto Ano do Ensino Fundamental: um Estudo sobre as Fases da Lua.) Propiciando el Aprendizaje Significativo Para Alumnos del Sexto Nivel de la Educación General Básica: un Estudio sobre Las Fases de la Luna

    NASA Astrophysics Data System (ADS)

    Darroz, Luiz Marcelo; Samudio Pérez, Carlos Ariel; da Rosa, Cleci Werner; Heineck, Renato

    2012-07-01

    We relate in this article a didactic experience studying the moon phases with a group of middle school students of a private school of the municipality of Passo Fundo, RS. Based on David Ausubel's Meaningful Learning Theory, we have sought to develop a proposal following a didactic model which simulates the phases of the Moon, as based on the previous conceptions of the students. The signs of learning were evidenced by means of memory registries of the activity. From the obtained results we believe that the proposal achieved its goals, since the students were able to identify, differentiate and transfer the phenomenon of the moon phases to new contexts. Thus, it is concluded that a methodology focused on a meaningful content for the students is fundamental to the construction and genuine grasping of what is being learned. Neste artigo, relata-se uma experiência didática de estudo das fases da Lua com uma turma do 6° ano do Ensino Fundamental, de uma escola privada do município de Passo Fundo, RS. Tendo como fundamentação teórica a Teoria da Aprendizagem Significativa de David Ausubel, buscou-se desenvolver a proposta a partir de um modelo didático que simula as fases da Lua e com base nas concepções prévias dos estudantes. Os indícios da aprendizagem foram constatados através de registros de memórias da atividade. Pelos resultados apresentados, acredita-se que a proposta alcançou seus objetivos, uma vez que os estudantes conseguiram identificar, diferenciar e transferir o fenômeno das fases da Lua para novos contextos. Assim, conclui-se que uma metodologia com enfoque em um conteúdo significativo ao estudante é fundamental para a construção e compreensão genuína do que está sendo aprendido. En este artículo se relata una experiencia didáctica de estudio de las fases de la Luna con una clase de 6º año de la educación general básica de una escuela privada del municipio de Passo Fundo, RS. Teniendo como fundamentación teórica la Teor

  13. Astronomical Perception of the Secondary School's Students in São Paulo's State School in Suzano City. (Spanish Title: Percepción Astronómica de Alumnos de la Enseñanza Media de la Red Estatal de San Pablo en la Ciudad de Suzano.) Percepção Astronômica de um Grupo de Alunos do Ensino Médio da Rede Estadual de São Paulo da Cidade de Suzano

    NASA Astrophysics Data System (ADS)

    França de Oliveira, Edilene; Voelzke, Marcos Rincon; Amaral, Luis Henrique

    2007-12-01

    año y 20,6% tenían la idea de cuales son los objetos celestes más cercanos de la Tierra. En contraposición, 67,6% clasificaron correctamente el Sol como una estrella; 55,9% relacionaron el Big Bang al origen del Universo; solamente 20,6% identificaron un año-luz como unidad de distancia y 32,4% reconocieron una estrella fugaz como meteoro. El presente análisis fue expandido para otros grupos de la Enseñanza Media, no solamente del período nocturno, sino también diurno de la misma escuela. En esta primera fase se nota el pequeño conocimiento de los alumnos sobre eventos astronómicos y principalmente la gran confusión sobre el significado correcto de los términos astronómicos populares. Embora a Astronomia seja uma das ciências mais antigas da humanidade e muitos dos conceitos astronômicos serem populares, observa-se que uma parcela significativa dos estudantes encontra-se à margem dessas informações. O presente trabalho visa analisar o nível de conhecimento básico dos alunos do Ensino Médio da Rede Estadual da cidade de Suzano quanto aos fenômenos astronômicos que os rodeiam. Para tanto foi elaborado um formulário constando de questões de múltipla escolha, aplicado no primeiro ano noturno da Escola Estadual Batista Renzi. Num espaço amostral de 34 alunos constatou-se que apenas 29,4% compreendiam a sucessão dos dias; 20,6% explicaram corretamente as estações do ano e 20,6% tinham idéia de quais são os objetos celestes mais próximos da Terra. Em contraposição, 67,6% classificaram corretamente o Sol como estrela; 55,9% relacionaram o Big Bang à origem do Universo; apenas 20,6% identificaram um ano-luz como unidade de distância e 32,4% reconheceram uma estrela cadente como meteoro. A presente análise foi expandida para mais 310 alunos de outras classes de Ensino Médio, não somente do período noturno, mas também diurno da mesma escola. Nesta primeira fase nota-se o pequeno discernimento dos alunos sobre eventos astronômicos e

  14. Learning about the Sky from the Environment: An Experience Working Along One Year with Students of Elementary Education. (Spanish Title: Aprendiendo sobre EL Cielo Desde el Entorno: Una Experiencia Trabajando Durante un Año Junto a Estudiantes del Primario.) Aprendendo sobre o Céu a Partir do Entorno: Uma Experiência de Trabalho ao Longo de um Ano com Alunos de Ensino Fundamental

    NASA Astrophysics Data System (ADS)

    Longhini, Marcos Daniel; Gomide, Hanny Angeles

    2014-12-01

    percepción limitada que los estudiantes tienen de su alrededor la cual, sin embargo, se expandió debido a las actividades llevadas a cabo, sobre todo en relación con la Luna. Trabajar con medidas sistemáticas revela el manejo cuidadoso de los datos para que sean comprensibles para los estudiantes, así como el trabajo con las sombras para que comprendan primero como se forman estas para después trabajarlas en Astronomía. Por último, llegamos a la conclusión de que el proceso desarrollado consistió en una etapa inicial de una obra que debe ser profundizado en los años posteriores de la formación de estos estudiantes. Projeto de pesquisa desenvolvido com 95 alunos do 6º ano do Ensino Fundamental de uma escola pública estadual de Uberlândia, Minas Gerais. Foi um trabalho contínuo, de fevereiro a dezembro de 2013, o qual levou os alunos a participarem de atividades de observação do entorno, dentre ele, o céu, analisando as mudanças ocorridas. Focamos no estudo das variações de temperaturas, chuvas, duração do dia, variações do tamanho das sombras e mudanças nos aspectos da Lua. Nosso foco de análise centrou-se em discutir os conhecimentos que os referidos alunos tinham acerca dos temas indicados no início e ao término da implementação da proposta. Os resultados mostraram a percepção limitada que os estudantes possuem de seu entorno, todavia, ampliada em função das atividades desenvolvidas, principalmente no que se refere à Lua. O trabalho com medidas sistemáticas revela o cuidado no tratamento dos dados para que eles se tornem compreensíveis aos alunos, assim como o trabalho com as sombras sinaliza para que os alunos primeiramente compreendam como as sombras são formadas para depois trabalhar isso em Astronomia. Por fim, concluímos que o processo vivido constituiu-se em uma etapa inicial de um trabalho que deve ser estimulado para os anos subsequentes da formação desses alunos.

  15. Comparing the use of 4.6 um lasers versus 10.6 um lasers for mitigating damage site growth on fused silica surfaces

    SciTech Connect

    Yang, S T; Matthews, M J; Elhadj, S; Cooke, D; Guss, G M; Draggoo, V G; Wegner, P J

    2010-10-21

    The advantage of using mid-infrared (IR) 4.6 {micro}m lasers, versus far-infrared 10.6 {micro}m lasers, for mitigating damage growth on fused silica is investigated. In contrast to fused silica's high absorption at 10.6 {micro}m, silica absorption at 4.6 {micro}m is two orders of magnitude less. The much reduced absorption at 4.6 {micro}m enables deep heat penetration into fused silica when it is heated using the mid-IR laser, which in turn leads to more effective mitigation of damage sites with deep cracks. The advantage of using mid-IR versus far-IR laser for damage growth mitigation under non-evaporative condition is quantified by defining a figure of merit (FOM) that relates the crack healing depth to laser power required. Based on our FOM, we show that for damage cracks up to at least 500 {micro}m in depth, mitigation using a 4.6 {micro}m mid-IR laser is more efficient than mitigation using a 10.6 {micro}m far-IR laser.

  16. Properties of Interstellar Medium In Infrared-bright QSOs Probed by [O i] 63 um and [C ii] 158 um Emission Lines

    NASA Astrophysics Data System (ADS)

    Zhao, Yinghe; Yan, Lin; Tsai, Chao-Wei

    2016-06-01

    We present a study of the interstellar medium (ISM) in the host galaxies of nine QSOs at 0.1 < z < 0.2 with black hole masses of 3× {10}7 {M}⊙ to 3× {10}9 {M}⊙ based on the far-IR spectroscopy taken with Herschel Space Observatory. We detect the [O i] 63 μm ([C ii] 158 μm) emission in 6 (8) out of 8 (9) sources. Our QSO sample has far-infrared luminosities ({L}{{FIR}}) ˜ several times {10}11{L}⊙ . The observed line-to-{L}{{FIR}} ratios ({L}[{{O}{{I}}]63μ {{m}}}/{L}{{FIR}} and {L}[{{C}{{II}}]}/{L}{{FIR}}) are in the ranges of 2.6 × 10-4 to 10-2 and 2.8 × 10-4 to 2 × 10-3, respectively (including upper limits). These ratios are comparable to the values found in local ULIRGs, but higher than the average value published so far for z\\gt 1 IR-bright QSOs. One target, W0752+19, shows an additional broad velocity component (˜720 km s-1) and exceptionally strong [O i] 63 μm emission with {L}[{{O}{{I}}]63μ {{m}}}/{L}{{FIR}} of 10-2, an order of magnitude higher than the average value found among local (U)LIRGs. Combining with the analyses of the Sloan Digital Sky Survey optical spectra, we conclude that the [O i] 63 μm emission in these QSOs is unlikely excited by shocks. We infer that the broad [O i] 63 μm emission in W0752+19 could arise from the warm and dense ISM in the narrow-line region of the central active galactic nucleus. Another possible explanation is the existence of a dense gas outflow with {n}{{H}}˜ {10}4 cm-3, where the corresponding broad [C ii] emission is suppressed. Based on the far-IR [O i] and [C ii] line ratios, we estimate constraints on the ISM density and UV radiation field intensity of {n}{{H}}≲ {10}3.3 cm-3 and {10}3\\lt {G}0≲ {10}4.2, respectively. These values are consistent with those found in local Seyfert 1 ULIRGs. In contrast, the gas with broad velocity width in W0752+19 has {n}{{H}}≳ {10}4.3 cm-3 and {G}0\\gt {10}4. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

  17. Mild steels coated with 14% manganese covered electrodes (E7-UM-200-K and E1-UM-350): Phenomena at the steel-coating interface

    SciTech Connect

    Molleda, F. . E-mail: fmolleda@etsin.upm.es; Mora, J.; Molleda, F.J.; Carrillo, E.; Mora, E.; Mellor, B.G.

    2006-12-15

    In this work the authors have studied the phenomena in the interface of the coating made on soft carbon steel with electrodes with a high content of manganese. The study has been done with scanning electron microscope and X-rays mapping images. These images show how the alloy elements are distributed in each of the constituent elements presented in the interface, and the nature of these constituents. These results have allowed us to verify that many of the problems that arise in homogeneous joints, as such localised corrosion, low interface resistance, etc., happened, precisely in these regions. As a help to determine the nature of the constituent elements, microhardness measurements have also been made.

  18. Retained Textile Foreign Bodies: Experience of 27 Years.

    PubMed

    Arikan, Soykan; Kocakusak, Ahmet

    2015-01-01

    Introdução e Objetivos: A retenção de materiais têxteis após a cirurgia é uma situação indesejada, tanto para o doente como para o cirurgião. Frequentemente são subnotificados por questões de natureza médico-legal. Apresentamos 14 casos de textilomas (compressoma) que foram tratados ou seguidos pessoalmente por dois cirurgiões gerais num período de 27 anos para descrever e definir as características clínicas e patológicas. Material e Métodos: Foram avaliados retrospectivamente os dados relativos a uma serie de casos, nomeadamente: características dos doentes (sexo e idade), localização anatómica do corpo estranho, intervalo de tempo até ao diagnóstico, apresentação clínica, queixas, abordagem diagnóstica, motivo de cirurgia, tipo de tratamento cirúrgico e complicações. Resultados: Foram identificados nove doentes do sexo feminino e cinco do sexo masculino, com uma média de idades de 43,07 ± 15,23 (mediano: 45) anos para o momento do diagnóstico. Em três doentes a cirurgia prévia foi cesariana, em quatro casos herniorrafia inguinal, um doente submetido a laparotomia exploradora por abdome agudo, um doente no qual foi realizado uma sigmoidectomia, uma doente submetida a apendicectomia e salpingooforectomia direita, uma doente na qual a cirurgia anterior tinha sido para corrigir uma hérnia incisional após laparotomia por neoplasia do ovário, um caso de tiroidectomia total, uma herniorrafia por hérnia epigástricae uma doente submetida cirurgia conservadora bilateral da mama com pesquisa de gânglio sentinela. A localização mais frequente dos compressomas foi intra-abdominal em sete casos, em quatro doentes a localização foi inguinal, um caso localizado na incisão da correcção da hérnia epigástrica, um doente com textiloma na loca de tiroidectomia, e no caso da doente submetida a cirurgia conservadora da mama em ambas regiões axilares se encontraram corpos estranhos/compressomas. O intervalo de tempo foi em média14

  19. [Esophageal perforation in children: a review of one pediatric surgery institution's experience (16 years)].

    PubMed

    Vieira, Elizabete; Cabral, Maria João; Gonçalves, Mroslava

    2013-01-01

    Introdução: O estudo teve por objetivo avaliar a experiência do nosso Serviço no tratamento das perfurações esofágicas. Material e Métodos: Análise retrospetiva de nove casos ocorridos entre 1 de Janeiro de 1996 e 31 de Dezembro de 2011. Destes casos, sete ocorreram após ingestão acidental de corpos estranhos e em dois tratou-se de lesões iatrogénicas após dilatação esofágica: por estenose péptica num caso e no outro por estenose da anastomose esofágica término-terminal de uma criança operada por atrésia do esófago. Resultados: Em 78% dos casos a abordagem inicial foi médica, com encerramento comprovado da perfuração em média ao fim de 20 dias; 22% dos doentes (dois casos) foram submetidos a cirurgia sem sucesso, acabando um deles por curar sem sequelas com pausa alimentar e terapêutica médica; no outro caso verificou-se necessidade de realizar posteriormente uma esofagocoloplastia. Na nossa série não se registou mortalidade. Discussão: A perfuração esofágica é uma das lesões mais graves do trato alimentar, continuando a ser devastadora, e, de difícil diagnóstico e tratamento. O reconhecimento desta complicação é fundamental para o seu tratamento com sucesso. Conclusões: O atraso do diagnóstico está associado a uma mortalidade que pode oscilar entre os 20 e 40%.

  20. Distribution of benthic foraminifers (>125 um) in the surface sediments of the Arctic Ocean

    USGS Publications Warehouse

    Osterman, Lisa E.; Poore, Richard Z.; Foley, Kevin M.

    1999-01-01

    Census data on benthic foraminifers (>125 ?m) in surface sediment samples from 49 box cores are used to define four depth-controlled biofacies, which will aid in the paleoceanographic reconstruction of the Arctic Ocean. The shelf biofacies contains a mix of shallow-water calcareous and agglutinated species from the continental shelves of the Beaufort and Chukchi Seas and reflects the variable sedimentologic and oceanic conditions of the Arctic shelves. The intermediate-depth calcareous biofacies, found between 500 and 1,100 meters water depth (mwd), contains abundant Cassidulina teretis , presumably indicating the influence of Atlantic-derived water at this depth. In water depths between 1,100 and 3,500 m, a deepwater calcareous biofacies contains abundant Oridorsalis umbonatus . Below 3,500 mwd, the deepwater mixed calcareous/agglutinated biofacies of the Canada, Makarov, and Eurasian Basins reflects a combination of low productivity, dissolution, and sediment transport. Two other benthic foraminiferal species show specific environmental preferences. Fontbotia wuellerstorfi has a depth distribution between 900 and 3,500 mwd, but maximum abundance occurs in the region of the Mendeleyev Ridge. The elevated abundance of F. wuellerstorfi may be related to increased food supply carried by a branch of Atlantic water that crosses the Lomonosov Ridge near the Russian Continental Shelf. Triloculina frigida is recognized to be a species preferring lower slope sediments commonly disturbed by turbidites and bottom currents. INTRODUCTION At present, our understanding of the Arctic Ocean lags behind our understanding of other oceans, and fundamental questions still exist about its role in and response to global climate change. The Arctic Ocean is particularly sensitive to climatic fluctuations because small changes in the amounts of sea-ice cover can alter global albedo and thermohaline circulation (Aagaard and Carmack, 1994). Numerous questions still exist regarding the nature and timing of paleoclimatic events in the Arctic Ocean. In order to attempt to answer some of these questions, baseline studies are imperative. This report discusses the distribution of benthic foraminifers in surface sediment samples from 49 box cores (figs. 1 and 2, table 1) collected by the U.S. Geological Survey (USGS) with the assistance of the U.S. Coast Guard (USCG). A modern data set of benthic foraminiferal distribution is necessary for interpreting the paleoclimatic and oceanographic history of the Arctic Ocean.

  1. Alors...euh...on parle francais? (So...um...Shall We Speak French?)

    ERIC Educational Resources Information Center

    Frommer, Judith G.; Ishikawa, Wayne

    1980-01-01

    Describes a one-semester conversational course taught at Harvard University designed to teach basic oral communication skills in French with the main emphasis on teaching students to pause while speaking. (AM)

  2. Broadband 0.25-um Gallium Nitride (GaN) Power Amplifier Designs

    DTIC Science & Technology

    2017-08-14

    power monolithic microwave integrated circuit amplifiers are extremely important in any communication system that must operate reliably and...broadband linear high- power amplifiers for future adaptive multimode radar systems . Qorvo has a high-performance 0.25-µm gallium nitride (GaN...ARL-TR-8091 ● AUG 2017 US Army Research Laboratory Broadband 0.25-µm Gallium Nitride (GaN) Power Amplifier Designs by John E

  3. Educacao Fisica Escolar: A Construcao de um Conceito (School Physical Education: The Construction of a Concept).

    ERIC Educational Resources Information Center

    Colpas, Ricardo Ducatti

    2000-01-01

    Seeks to understand school physical education praxis in light of the human development theories of Lev Vygotsky. Develops a methodology of teaching and a conception of learning that enables students to recognize physical education as a school discipline connected to a dynamic curriculum. (BT)

  4. VizieR Online Data Catalog: MIPS 24um calibrators (Engelbracht+, 2007)

    NASA Astrophysics Data System (ADS)

    Engelbracht, C. W.; Blaylock, M.; Su, K. Y. L.; Rho, J.; Rieke, G. H.; Muzerolle, J.; Padgett, D. L.; Hines, D. C.; Gordon, K. D.; Fadda, D.; Noriega-Crespo, A.; Kelly, D. M.; Latter, W. B.; Hinz, J. L.; Misselt, K. A.; Morrison, J. E.; Stansberry, J. A.; Shupe, D. L.; Stolovy, S.; Wheaton, W. A.; Young, E. T.; Neugebauer, G.; Wachter, S.; Perez-Gonzalez, P. G.; Frayer, D. T.; Marleau, F. R.

    2014-07-01

    The data were all obtained using the MIPS small-field photometry mode astronomical observation template (AOT). For most targets, two cycles of photometry using 3s exposures were obtained, resulting in 14 individual images at each of two telescope nod positions (excluding the short exposure that starts the data-taking sequence at each of the two telescope nod positions). Starting with the raw data downloaded from the Spitzer Science Center (SSC), these data were processed using version 3.06 of the MIPS Data Analysis Tool (DAT; Gordon et al., 2005PASP..117..503G), which performs standard processing of infrared detector array data (slope fitting, dark subtraction, linearity correction, flat fielding, and mosaicking), as well as steps specific to the array used in MIPS (droop correction and dynamic range extension using the first difference frame) -- these steps are described in more detail in the paper. (5 data files).

  5. [The life story of Joaquim Alberto Cardoso de Melo: Quincas, Um berro à vida].

    PubMed

    Zancan, Lenira; Matida, Álvaro Hideyoshi

    2015-10-01

    The article seeks to reflect on the contribution of Joaquim Alberto Cardoso de Melo (1936-1993) to the field of public health relating his life story and his scientific production with core issues of education and health, present in his time and which remain in debate to this day. His contribution resulted in the production of new meanings for health practices, with the understanding as social and transdisciplinary phenomena. Based on conversations with co-authors and friends and rereading of his texts, it was decided to approach his biography from: (i) his skills and participation in initiatives and practices of preventive medicine and popular education, which fomented the critical analysis of health education; (ii) his presence as an educator in public health courses throughout the country, eliciting the deconstruction of the theories and practices of education and health with managers, students, professionals and teachers; (iii) his availability for transdisciplinary dialogue with the humanities and social sciences in the search for "epistemological sutures" between reason and passion, capable of responding to the dilemmas and challenges of healthcare work. These three trajectories indicate that the performance of "Quincas" must be understood from his restlessness as a health professional and educator, engaged in the production of knowledge and practices related to the complexity of the phenomenon of life.

  6. Alors...euh...on parle francais? (So...um...Shall We Speak French?)

    ERIC Educational Resources Information Center

    Frommer, Judith G.; Ishikawa, Wayne

    1980-01-01

    Describes a one-semester conversational course taught at Harvard University designed to teach basic oral communication skills in French with the main emphasis on teaching students to pause while speaking. (AM)

  7. Application of 2-um wavelength holmium lasers for treatment of skin diseases

    NASA Astrophysics Data System (ADS)

    Shcherbakov, Ivan A.; Klimov, Igor V.; Tsvetkov, Vladimir B.; Nerobeev, Alexander I.; Sadovnikova, Lija B.; Eliseenko, Vladimir I.

    1994-09-01

    Theoretical and experimental analysis of the efficiency of application of 2 micrometers pulsed holmium laser for cosmetic and plastic surgery and dermatology is carried out. Preliminary experiments were carried out on rats. Solid state 2 micrometers pulsed laser was allowed to operate in free running mode with pulse energy up to 1.5 J and pulse repetition rate up to 5 Hz. To deliver emission to the object a flexible quartz fiber without further focusing of 2.5 m in length and 400 micrometers of the core diameter was used. The effect of the different power density emission on the skin was studied. The second stage was the study of the influence of 2 micrometers emission on human skin. The results of the removal of hemangioma, papilloma, telangiectasia, nevus, nevus acantholytic, xanthelasma palpebral, verruca, chloasma, pigmental spots, tattoos, etc. are presented. Precision, simplicity, efficiency, and the high cosmetic effect of these operations is noted.

  8. Teaching Advanced Concepts in Computer Networks: VNUML-UM Virtualization Tool

    ERIC Educational Resources Information Center

    Ruiz-Martinez, A.; Pereniguez-Garcia, F.; Marin-Lopez, R.; Ruiz-Martinez, P. M.; Skarmeta-Gomez, A. F.

    2013-01-01

    In the teaching of computer networks the main problem that arises is the high price and limited number of network devices the students can work with in the laboratories. Nowadays, with virtualization we can overcome this limitation. In this paper, we present a methodology that allows students to learn advanced computer network concepts through…

  9. Draft Genome Sequence of Dematiaceous Coelomycete Pyrenochaeta sp. Strain UM 256, Isolated from Skin Scraping.

    PubMed

    Yew, Su Mei; Chan, Chai Ling; Soo-Hoo, Tuck Soon; Na, Shiang Ling; Ong, Seong Siang; Hassan, Hamimah; Ngeow, Yun Fong; Hoh, Chee Choong; Lee, Kok Wei; Yee, Wai Yan; Ng, Kee Peng

    2013-05-30

    Pyrenochaeta, classified under the order Pleosporales, is known to cause diseases in plants and humans. Here, we report a draft genome sequence of a Pyrenochaeta sp. isolated from a skin scraping, with an estimated genome size of 39.4 Mb. Genes associated with the synthesis of proteases, toxins, plant cell wall degradation, and multidrug resistance were found.

  10. U.S. Court of Claims Deposition of Kish um us tubbee. Teaching with Documents.

    ERIC Educational Resources Information Center

    Blondo, Richard A.; And Others

    1994-01-01

    Discusses the expulsion of the Choctaw Indians from their lands in the U.S. southeast as a result of the Indian Removal Act of 1830. Provides a lesson plan using a primary source document along with accompanying discussion questions. Includes a three-page letter that is the deposition of a Choctaw Indian protesting removal. (CFR)

  11. Matching of Bragg condition of holographic phase gratings in 1.3-1.5um region

    NASA Astrophysics Data System (ADS)

    Silvennoinen, Raimo V. J.; Hamalainen, Rauno M.

    1991-10-01

    The spectral diffraction efficiency of phase holograms depends on refractive index modulation, grating spacing, and the thickness of a holographic grating, e.g., the refractive index modulation of the dichromatic gelatin grating (DCG) can be increased so that the diffraction efficiency of 90% measured in Bragg angle without refractive index matching can be achieved in the recording wavelength. The use of the same holographic grating in longer wavelength regions in accordance with the Bragg condition demands the refractive index matching. In our applications, holographic phase gratings in hololens form (HOL) are used as a wavelength selective elements in conventional optical multi-/demultiplexing (mux/demux) applications, where various wavelengths are multiplexed to the detectors needed. On the other hand, the novel applications of the HOL element used as a monochromator in the external cavity construction of a semiconductor laser according to the refractive index matching the Bragg condition are theoretically investigated in the wavelength region from 1.3 micrometers to 1.5 micrometers .

  12. VizieR Online Data Catalog: Chamaeleon I 870um sources (Belloche+, 2011)

    NASA Astrophysics Data System (ADS)

    Belloche, A.; Schuller, F.; Parise, B.; Andre, P.; Hatchell, J.; Jorgensen, J. K.; Bontemps, S.; Weiss, A.; Menten; K. M.; Muders, D.

    2011-01-01

    Table 2 lists the sources extracted with GAUSSCLUMPS from the filtered 870 micron continuum emission map of Chamaeleon I obtained with the bolometer camera LABOCA at the APEX telescope. These sources are listed in the order in which they were found by GAUSSCLUMPS, i.e. roughly in order of decreasing peak flux density. The 870 micron dust continuum emission map of the Chamaeleon I molecular cloud is available in FITS format. The data were obtained with the bolometer camera LABOCA at the APEX telescope. They were calibrated, reduced, co-added, gridded, smoothed to an effective angular resolution of 21.2" (FWHM), and written in FITS format with the BoA software. The flux density unit is Jy/21.2"-beam. The coordinates are equatorial (J2000) and the offsets are in RADIO projection. (6 data files).

  13. Infrared 3-4 um Spectroscopic Investigation of a Large Sample of Nearby Ultraluminous Infrared Galaxies

    DTIC Science & Technology

    2005-09-27

    servable with small air masses from Mauna Kea , Hawaii, our main observing site. These selection criteria result in 24 ULIRGs classified optically as... Observatory , 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan; masa.imanishi@nao.ac.jp C. C. Dudley Naval Research Laboratory, Remote Sensing Division...data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. 2 Visiting Astronomer at the Infrared Telescope

  14. Porcine dermal lesions produced by 1.3um laser pulses

    NASA Astrophysics Data System (ADS)

    Johnson, Thomas E.; Winston, Golda C. H.; Burton, Margaret B.; Greene, Willie L.

    2003-07-01

    An increasing number of industries, to include military, medicinal, and technological arenas, are using 1.3 micron laser systems for which current skin and eye guidelines are identical. No skin threshold, ED50 or exposure data are available. The mechanisms of laser-tissue interaction with skin at 1.3 microns are unknown. Together, these facts necessitate increased research to prevent future laser accidents and injuries. This study examines the method of interaction of 1.3 microns laser light with tissue in the Yorkshire pig. Our research addresses laser-tissue interaction through delivery using a Nd:YAG with an intracavity filter producing 1.3 micron light at 0.5 millisecond exposure time and in the range of 137 to 475 J/cm2. Laser exposure to Yorkshire pigs was evaluated for dermal lesion development. Lesions were appraised for acute, one-hour and 24-hour post exposure presentation.

  15. Educacao Fisica Escolar: A Construcao de um Conceito (School Physical Education: The Construction of a Concept).

    ERIC Educational Resources Information Center

    Colpas, Ricardo Ducatti

    2000-01-01

    Seeks to understand school physical education praxis in light of the human development theories of Lev Vygotsky. Develops a methodology of teaching and a conception of learning that enables students to recognize physical education as a school discipline connected to a dynamic curriculum. (BT)

  16. Earth's spectral albedo from 0.5 to 4.4 u