Sample records for sedimento marino proveniente

  1. DE MEDIO AMBIENTE Y MEDIO RURAL Y MARINO

    E-print Network

    Moreno Saiz, Juan Carlos

    MINISTERIO DE MEDIO AMBIENTE Y MEDIO RURAL Y MARINO 5ECRETAl'JA GEN~RAL DE MEDIO RURAL DIRECCIÓN GEMRAl. DE MEDIO NATUltAlY I'OlITICA FORESTAL #12;Atlas y Libro Rojo de la Flora Vascular Amenazada de España Adenda 2008 Madrid, 2008 #12;#12;Atlas y Libro Rojo de la Flora Vascular Amenazada de España

  2. Interacting with the User in Calendar Management Liliana Ardissono, Giovanna Petrone, Marino Segnan, and Gianluca Torta

    E-print Network

    Ardissono, Liliana

    Interacting with the User in Calendar Management Liliana Ardissono, Giovanna Petrone, Marino Segnan is limited by the lack of flexibility of time management services. Online calendar managers fail to support, this paper presents a mixed- initiative scheduling model supporting interactive calendar management. Our

  3. Prostate Visualization with Overlapping Regions of Interest Joseph Marino Arie Kaufman

    E-print Network

    Prostate Visualization with Overlapping Regions of Interest Joseph Marino Arie Kaufman Stony Brook of prostate MRI data and CAD results, referred to as score values. In this system, it is also possible--Interaction techniques 1 INTRODUCTION Prostate cancer is one of the most prevalent cancers worldwide [4]. Recently

  4. A Review of "Becoming Neapolitan. Citizen Culture in Baroque Naples" by John A. Marino 

    E-print Network

    Litchfield, R. Burr

    2011-01-01

    by title, the representatives of the ?seggi,? the legal ?togati? of magistrates, and officials of the Royal palace. Many festivities emphasized symbolically the ancient Greek foundation of Naples, before Rome, and the distance of Neapolitan from... fail to see why art historians must give them a place of honor in future accounts of Western sculpture. John A. Marino. Becoming Neapolitan. Citizen Culture in Baroque Naples. Baltimore: The Johns Hopkins University Press, 2011. 342 pp. including...

  5. An interview with Kate Storey and Silvia Marino. Interview by Eva Amsen.

    PubMed

    Storey, Kate; Marino, Silvia

    2010-06-01

    In February 2010, in the beautiful setting of Wiston House, nestled at the foot of the hilly South Downs in Sussex, UK, The Company of Biologists, the not-for-profit organisation that publishes Development, held the inaugural meeting of their new workshop series dedicated to biological research (for more information on these meetings, please go to http://workshops.biologists.com/). The meeting was titled 'Neural Stem Cells in Development and Disease', and was organised by Kate Storey, Professor of Neural Development at the College of Life Sciences of the University of Dundee, and Silvia Marino, Professor of Neuropathology at Barts and The London School of Medicine and Dentistry. They were also assisted by the workshop chairman, François Guillemot, Programme Leader of the Division of Molecular Neurobiology at the National Institute for Medical Research in London. The scientific scope and themes of this workshop are covered in more detail in a meeting review published in this issue (see p. 1933) but, to get a glimpse behind the scenes, we talked to Kate Storey and Silvia Marino and asked them about the organisation of the 'Neural Stem Cells in Development and Disease' workshop. PMID:20501587

  6. O ADUBO ORGÂNICO PROVENIENTE DE ESTAÇÕES DE TRATAMENTO DE ESGOTO: QUESTÕES TÉCNICAS E TENDÊNCIAS DE MERCADO

    Microsoft Academic Search

    Irene Domenes Zapparoli; Marcia Goncalves Pizaia

    2008-01-01

    O adubo orgânico, proveniente de resíduos sólidos de estações de tratamento de esgoto, biossólido, vem sendo estudado há aproximadamente duas décadas quanto aos aspectos metodológicos, tecnológicos, sanitários, agronômicos e sócio-econômicos. Nesse sentido, este estudo se prende as questões sócio-econômicas do biossólido, de forma a estudar a capacidade assimilativa do adubo, como bem o aspecto econômico em conformidade à com a

  7. Ejercicio interlaboratorio de bioensayos marinos para la evaluación de la calidad ambiental de sedimentos costeros. I. Descripción del ejercicio y calidad de los sedimentos Interlaboratory assessment of marine bioassays to evaluate the environmental quality of coastal sediments in Spain. I. Exercise description and sediment quality

    Microsoft Academic Search

    MC Casado-Martínez; JL Buceta; JM Forja; TA DelValls

    The results of an interlaboratory assessment made to evaluate the use of different bioassays for sediment quality characterization for a regulatory purpose are presented. The objective of the study was to determine the main differences among sediment bioassays conducted at different laboratories and to evaluate how this can influence dredged material management. The exercise consisted of two parts. During Phase

  8. Atti 17a Conferenza Nazionale ASITA -Riva del Garda 5-7 novembre 2013 Caratterizzazione dell'ambiente marino dei Campi Flegrei.

    E-print Network

    New Hampshire, University of

    'ambiente marino dei Campi Flegrei. Risultati preliminari della campagna oceanografica RICAMAR 2013 Marco Grassi (***) Istututo Idrografico della Marina (IIM), tel. +39 (010) 24431 Riassunto La caldera dei Campi Flegrei è una in questo lavoro, porranno le basi per la creazione di osservatori marini dei fenomeni legati alla caldera

  9. UPC's Bilingual N-gram Translation System Jose B. Mari~no, Rafael E. Banchs, Josep M. Crego, Adri`a de Gispert

    E-print Network

    de Gispert, Adrià

    UPC's Bilingual N-gram Translation System Jos´e B. Mari~no, Rafael E. Banchs, Josep M. Crego, Adri describes the UPC's bilingual n-gram approach to statistical machine translation, which implements the log-linear combination of a bilingual n-gram translation model with six additional feature functions. A brief description

  10. Emergency medical services in mass gatherings: the experience of the Formula 1 Grand Prix 'San Marino' in Imola.

    PubMed

    Nardi, R; Bettini, M; Bozzoli, C; Cenni, P; Ferroni, F; Grimaldi, R; Pezzi, A; Vivoli, M; Salcito, D; Gordini, G; Gambarin, R; Lavezzi, E; Lippi, R; Mazzolani, T; Montecuccoli, F; Prati, D; Simonetti, N; Ugolini, A; Zen, C

    1997-12-01

    Mass gatherings are special situations for which mass medical care must be preplanned. Acute emergencies occur at public gatherings and medical coverage on site has proven benefit. Responsibility of general plan, management of specific problems, transport planning, communications system, guidelines and protocols, special situations management, ancillary supports, sources of extra help for unforeseen needs are the most important items to consider. In mass gatherings the whole emergency medical service (EMS) planning and management has to depend on the emergency department direction, with its authority on all aspects of patient care in the EMS system. This report concerns the planning of EMS and of medical care in a situation at risk for mass casualties at the Formula I Grand Prix-Championship Racing 'San Marino' of Imola. PMID:9444507

  11. Mass population screening for celiac disease in children: the experience in Republic of San Marino from 1993 to 2009

    PubMed Central

    2013-01-01

    Background Prevalence of celiac disease in developed countries is assessed about 1:100–1:150. The real prevalence is unknown because mass screenings are expensive and difficult to organize. Moreover celiac disease can affect people at every age and studies on asymptomatic subjects at different ages are not comparable. In this study we wanted to know the real prevalence of celiac disease in children in the Republic of San Marino. We also analysed concordance of different tests used and costs of mass screening. Methods The study started in 1993. From 1993 to 1997 children aged 6, 10 and 14 were screened. Since 1997 only children aged 6 were monitored, in order to have a homogeneous population. In fact, every child born since 1980 was taken into account. Children were recruited by classroom lists of students for general paediatric examination. Until 2005 the screening test was based on dosage of antibodies anti-gliadin (AGA) IgA and IgG on venous blood. Since 2006 these tests were replaced by anti-transglutaminase IgA antibodies (ATTG). Anti-endomysial antibodies (EMA) were performed if result of any between either AGA or ATTG tests was positive or borderline; if EMA was positive, then an endoscopy with histological examination was performed to confirm the final diagnosis. Results Attendance to paediatric examination was 96%, submission to blood test was 87%. 42 on 5092 (0,8%; 1:125) children resulted affected by celiac disease. Histology always confirmed diagnosis by serology except for two cases. AGA test (until 2005) yielded 28 on 4304 (0,7% 1:143); ATTG test (since 2006) revealed 14 positive cases on 788 (1,8%; 1:55) leading to a larger percentage of diagnosis. EMA antibodies always confirmed positivity of ATTG. Conclusions Prevalence of celiac disease in children of Republic of San Marino is comparable to other North-European Countries. Sensitivity of ATTG proved much higher than that of anti-gliadin antibodies. Concordance between ATTG and EMA was 100%. Concordance between serology and histology was approximately 100%. Cost of screening was yearly about 5000 euros (250 children screened every year). PMID:24152602

  12. Ejercicio interlaboratorio de bioensayos marinos para la evaluación de la calidad ambiental de sedimentos costeros. VI. Análisis general de resultados y conclusiones del ejercicio Interlaboratory assessment of marine bioassays to evaluate the environmental quality of coastal sediments in Spain. VI. General analysis of results and conclusions of the exercise

    Microsoft Academic Search

    MC Casado-Martínez; JL Buceta; JM Forja; TA DelValls; Antonio López

    2006-01-01

    To ensure that toxicity bioassays comply with national criteria, an interlaboratory study was carried out that focussed mainly on the development, optimization and validation of methods for dredged material toxicity assessment. The performance of these techniques was assessed in a validation study and the results were compared with the traditional chemical characterization. This study included two phases and showed promising

  13. MARINO RECREATION CENTER Monday, July 5 Monday, July 12, 2010

    E-print Network

    Sridhar, Srinivas

    :30pm Closed: Judo Club 9:30pm ­ 11:45pm Open Thursday 5:00am ­ 11:45am Open 11:45am ­ 1:00pm Closed Closed: Judo Club 9:30pm ­ 11:45pm Open Friday 5:00am ­ 11:45pm Open Saturday 8:00am ­ 8:45pm Open #12/12) 5:00am ­ 6:00pm Open 6:00pm ­ 7:30pm Closed: Group Fitness Class 7:30pm ­ 9:30pm Closed: Judo Club 9

  14. (CALIDAD DEL GUANO PROVENIENTE DEL MURCIELAGO Hipposideros speoris)

    Microsoft Academic Search

    K. R. Sridhar; K. M. Ashwini; S. Seena; K. S. Sreepada

    SUMMARY This study aimed at assessing the physicochemical characteristics, microflora and manure quality of guano of an endemic insectivorous cave bat Hipposideros speoris. The impact of bat guano on crop growth was also assessed. Results indicated that organic matter, total carbon, total nitrogen and phosphate were high in faecal pellets. Calcium, magnesium, bacteria, actinomycetes and fungi were higher in humus-like

  15. VizieR Online Data Catalog: Abundances of M22 subgiants (Marino+, 2012)

    NASA Astrophysics Data System (ADS)

    Marino, A. F.; Milone, A. P.; Sneden, C.; Bergemann, M.; Kraft, R. P.; Wallerstein, G.; Cassisi, S.; Aparicio, A.; Asplund, M.; Bedin, R. L.; Hilker, M.; Lind, K.; Momany, Y.; Piotto, G.; Roederer, I. U.; Stetson, P. B.; Zoccali, M.

    2012-06-01

    Ground-based observations were used to analyze the CMD over a wide spatial field in the B and V bands and to estimate the atmospheric parameters of the spectroscopic targets. In addition, we used ground-based U images available for a smaller field, and images taken with the Advanced Camera for Surveys onboard the HST (ACS/HST) in the F606W and F814W bands to make our study of the double SGB extend from the ultraviolet to the infrared spectral regions. The HST ACS/WFC images were obtained under program GO-10775 (PI Sarajedini). (2 data files).

  16. VizieR Online Data Catalog: NGC1851 halo+cluster system (Marino+, 2014)

    NASA Astrophysics Data System (ADS)

    Marino, A. F.; Milone, A. P.; Yong, D.; Dotter, A.; da Costa, G.; Asplund, M.; Jerjen, H.; Mackey, D.; Norris, J.; Cassisi, S.; Sbordone, L.; Stetson, P. B.; Weiss, A.; Aparicio, A.; Bedin, L. R.; Lind, K.; Monelli, M.; Piotto, G.; Angeloni, R.; Buonanno, R.

    2015-03-01

    In this paper, we used four distinct photometric data sets. First, we used Stetson (2000PASP..112..925S) ground-based B, V, R and I photometry. This photometric catalogue has been established from about 550 images taken at different telescopes, i.e. the Max Planck 2.2m, the Cerro Tololo Inter-American Observatory (CTIO) 4, 1.5 and 0.9m telescopes, and the Dutch 0.9m telescope in La Silla. In the present work, we have complemented the Stetson catalogue with images collected with the Wide Field Imager (WFI) of the Max Planck 2.2m telescope at La Silla (WFI@2.2m) through the U filter under the SUrvey of Multiple pOpulations (SUMO) campaign. Secondly, to study stars in the halo of NGC 1851, we collected BVI images with WFI@2.2m of a field between ~10 and 35 arcmin to the south of the cluster centre. Photometry and astrometry for this data set have been obtained by using the program img2xym_WFI and the procedure described by Anderson et al. (2006A&A...454.1029A). Third and finally, to investigate the most crowded central regions, we use Hubble Space Telescope (HST) F606W and F814W photometry obtained with the Wide Field Channel of the Advanced Camera for Survey (WFC/ACS) and F275W photometry collected with the Ultraviolet and Visual Channel of the Wide Field Camera 3 (UVIS/WFC3). (2 data files).

  17. A Review of "Becoming Neapolitan. Citizen Culture in Baroque Naples" by John A. Marino

    E-print Network

    Litchfield, R. Burr

    2011-01-01

    festivities, was becom- ing more stratified in the Baroque period. As the author concludes at one point (227), the development of Neapolitan festivities ?shows the co-option of popular celebrations by elite civil and clerical powers ? and eventually... reviews 85 necessary, the indifference of art historians to any genre not in the outdated canon from which they and textbook-writers still take their cues. While the excellent essays and descriptions fill most of the pages...

  18. Il Sistema Idro-Meteo-Mare e le reti di monitoraggio marino dell'APAT

    Microsoft Academic Search

    C. Accadia; G. Arena; A. Barbano; N. Bencivenga; M. Casaioli

    The Hydrology Department of the Agency for the Protection of the Environment and the Technical Services (APAT) is involved in several important hydrological fields, in particular the knowledge and the preservation of the water resources, the analyses of the hydrologic cycle, the knowledge of the marine dynamics, the defence of the coasts from erosion. The activities in the maritime area,

  19. Monitoreo de pastos marinos en Perezoso, Cahuita, Costa Rica (sitio CARICOMP)

    Microsoft Academic Search

    Jorge Cortés

    2007-01-01

    Seagrass monitoring at Perezoso, Cahuita, Costa Rica (CARICOMP site). The seagrass of Perezoso (Cahuita National Park, Caribbean coast of Costa Rica) was monitored using the CARICOMP proto- col. Productivity (2.7±1.15 g\\/m2\\/d; n=74) was intermediate, compared to other Caribbean sites. Total biomass was intermediate to high (750-1500 g\\/m2) at most CARICOMP sites (Colombia, Cuba, Mexico, Puerto Rico and Venezuela) including Costa

  20. GEOQUÍMICA DE SEDIMENTOS E O MONITORAMENTO DE METAIS NA PLATAFORMA CONTINENTAL NORDESTE ORIENTAL DO BRASIL

    Microsoft Academic Search

    Luiz Drude de Lacerda; Rozane Valente Marins

    This study discusses the interactions between alloctonous continental sources and autochthonous geochemical processes occurring at the continental shelf in controlling heavy metals concentrations in sediments. The magnitude of the continental sources results in variations in heavy metal concentrations, which are large enough to make monitoring of local sources (offshore oil and gas exploration) very difficult. Therefore, new paradigm shall be

  1. Uso de imagens LANDSAT como subsídio ao estudo da dispersão de sedimentos na região da foz do rio São Francisco

    Microsoft Academic Search

    João Antonio Lorenzzetti; Eduardo Negri

    The construction of a sequence of water reservoirs along the lower São Francisco river basin has caused a severe change in the supply of water and sediments to the coastal zone. We present in this paper a first attempt to use Landsat data to estimate de Suspended Sediment Content (SSC) of the coastal plume. A simple log model proposed by

  2. Composición de sedimentos en las zonas costeras de Costa Rica utilizando Fluorescencia de Rayos-X (FRX)

    Microsoft Academic Search

    Omar G. Lizano; Eric J. Alfaro

    Using an energy dispersive X-Ray fluorescence analysis, simultaneous evaluation of K, Ca, Ti, Cr, Mn, Ge, Ni, Cu, Zn, Br, Rb, Sr and Pb in 74 marine sediment samples from the Costa Rica intertidal zones was conducted. Samples were collected between June 1999 and December 2001, from Caribbean and Pacific bea- ches of Costa Rica. Calcium and iron showed the

  3. Comportamento de sinterização de massas argilosas contendo resíduo proveniente do setor petrolífero (Sintering behavior of petroleum waste containing clayey masses)

    Microsoft Academic Search

    G. P. Souza; J. N. F. Holanda

    This work presents the results of a study on the sintering behaviour of oil sludge waste containing clayey masses. Mixtures con taining 0, 5, 10, 15 or 20 wt% waste were prepared, and sintered at nine different temperatures ranging between 750 ºC and 1150 ºC. The formation and evolution of crystalline phases were evaluated by X-ray diffraction. Sintering was also

  4. Graduate Studies Committee October 11, 2011

    E-print Network

    Collins, Gary S.

    Sciences ­ [David] Educational Psychology - [Marino] Interior Design - [Corbett] Natural Resource Sciences Management - [Mesarovic] Bylaws: Counseling Psychology - [Marino] Criminal Justice - [Vyhnanek] Crop & Soil

  5. Humanities 3 (John Marino) Film is Required Viewing; Optional Extra Credit Natalie Zemon Davis, The Return of Martin Guerre (Cambridge, Mass.: Harvard University

    E-print Network

    Russell, Lynn

    (Artigat, south of Toulouse) 1. Corporate identity versus individualism 2. Comparing countryside, city Government" of Family and Farm 1. Agricultural Life and Labor: Gender & Children 2. Married Roles: Husbands? Was she guilty of a crime? If so, what was it: theft, lying, adultery? What punishment if any should have

  6. A Designed Protein Interface That Blocks Fibril Formation Ushma J. Shukla, Heather Marino, Po-Ssu Huang, Stephen L. Mayo, and John J. Love*,

    E-print Network

    Love, John J.

    , straight, and unbranched with a diameter of 10 nm.12 All amyloid fibrils exhibit cross- fibril diffraction and consist of the same structure that contains a -sheet oriented perpendicular to the axis of the fibril.13-like. The micrograph reveals that monomer-B forms long unbranched fibrils with a diameter of approximately 10 nm

  7. Relationship between PCBs in suspended and settled sediments from a coastal lagoon Relación entre PCBs en sedimentos suspendidos y depositados de una laguna costera

    Microsoft Academic Search

    Luísa A. Barreira; Maria J. Bebianno; Stephen M. Mudge; Ana M. Ferreira; Clarisse I. Albino; Luís M. Veriato

    2005-01-01

    Polychlorinated biphenyl (PCB) congener concentrations and organic matter content were determined in 84 samples of suspended and settled sediments collected from six different locations in the Ria Formosa lagoon (Portugal). Total PCB (tPCB) concentrations were higher in the suspended matter (1.00-39.80 ng g -1 dw) than in the sediments (0.10-2.10 ng g -1 dw) and, in general, the same was

  8. 78 FR 63978 - Proposed CERCLA Settlements Relating to the Truckers Warehouse Site in Passaic, Passaic County...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-25

    ...with (1) RJS Corp.; (2) Your Factory Warehouse, Inc., Douglas Marino and Mark Marino; and (3) A&S Corporation and Marie...burke.gerard@epa.gov. Dated: September 24, 2013. Walter E. Mugdan, Director, Emergency and Remedial Response...

  9. Toxicidade de água e sedimentos e comunidade bentônica do estuário do rio Itanhaém, SP, Brasil: bases para a educação ambiental Water toxicity and sediments and benthic community from the estuary of the Itanhaém river, (SP Brazil): basis for environmental education Toxicidad del agua y sedimentos y comunidad béntica del estuario del río Itanhaém, (SP el Brasil): base para la educación ambiental

    Microsoft Academic Search

    Fernanda Voietta Pinna; Denis Moledo de; Souza Abessa; Robson Seriani; Fabiana Lima Silveira; Priscilla Romano

    DESCRITORES: Água, Toxicidade, Comunidade bentônica - Itanhaém Abstract: The Estuary of the Itanhaém River is situated at Baixada Santista, located on the Southern Coast of São Paulo State (23°50'-24°15'S; 46°35'- 47°00'W). This area is now the object of human settlements. Although the estuary seems to be low degraded, the discharge of pollutants into this river may put aquatic life in

  10. Los graves efectos potenciales de la modificación de las normas europeas sobre contenido de azufre de los combustibles marinos The serious potential effects of the modification give European procedure on content of sulphur of the marine fuels

    Microsoft Academic Search

    Elena Seco; Ingeniero Naval; Manuel Carlier de Lavalle

    2006-01-01

    On 19 May 2005 it will come into force Annex VI of the MARPOL Convention, on the Prevention of Air Pollution from Ships which, among other regulations, establishes a ceiling of 4,5 % in the sulphur content of fuels used on board ships. In areas designated as Sulphur Emission Control Areas (SECA's), fuels will not be allowed to exceed 1,5

  11. Aislamiento de Plesiomonas shigelloides y Aeromonas veronii biotipo sobria en heces de lobo marino común sudamericano, Otaria flavescens (Shaw, 1800) Isolation of Plesiomonas shigelloides and Aeromonas veronii biotype sobria from South American sea lion, Otaria flavescens (Shaw, 1800) feces

    Microsoft Academic Search

    Mario J. González; María P. Villanueva; Fadua Latif; Fabiola Fernández; Heriberto Fernández

    Plesiomonas shigelloides and Aeromonas spp. are Gram negative bacteria vastly distributed in the environment, being isolated from aquatic ecosystems and terrestrial and marine animals. The South American sea lion (Otaria flavescens) is the most frequent marine mammal of the Chilean coasts, living in beaches, rocks or coastline of rivers. In this work we determined the isolation frequency of P. shigelloides

  12. 100:2564-2576, 2008. First published Aug 27, 2008; doi:10.1152/jn.90688.2008J Neurophysiol Robert A. Marino, C. Kip Rodgers, Ron Levy and Douglas P. Munoz

    E-print Network

    Munoz, Douglas Perry

    ) and 28 motor (M) neurons in two monkeys trained to perform a nonpredictive visually guided saccade task eccentricity in visual space but remained invariant on the SC map beyond 1 mm of the rostral pole. RF shape

  13. Tectonic evolution from the Hercynian shortening to the Triassic extension in the Paleozoic sediments of the Western High Atlas (Morocco) Evolución tectónica desde el acortamiento hercínico hasta la extensión triásica de los sedimentos paleozoicos del Alto Atlas Occidental (Marruecos)

    Microsoft Academic Search

    H. Saber; M. El Wartiti; D. Hmich; J. W. Schneider

    In the Upper Palaeozoic (Stephanian to Upper Permian) sediments of the Western High Atlas, ancient faults trending N20°-40°, N70°-80°, E-W to N110°-120° and N160°, that is, of hercynian age, present normal, sinistral strike-slip or thrust displacements and sometimes with important throw. They were active from Stephanian (Late Carboniferous) to Late Permian times. The new biostrati- graphic and chronostratigraphical data allow

  14. FLUJOS DE AMONIO, NITRITO, NITRATO Y FOSFATO A TRAVES DE LA INTERFASE SEDIMENTO-AGUA, EN UNA LAGUNA TROPICAL AMMONIUM, NITRITE, NITRATE AND PHOSPHATE FLUXES ACROSS THE SEDIMENT-WATER INTERFACE IN A TROPICAL LAGOON

    Microsoft Academic Search

    David Valdés; Elizabeth Real

    The sediments of Chelem Lagoon, on the coast of the Gulf of Mexico, north of the Yucatán Peninsula, were studied measuring the nutrient concentrations in the interstitial water. Ihe average values were: ammonium 459 f 281 PM, peaking up to 1,045 PM; nitrite 1.8 f 1.8 PM, with a maxi- mum of 5.3 PM; nitrate 8.2 f 10.3 PM, reaching

  15. Retenção do dimetoato e sua relação com pH e teores de argila e matéria orgânica nos sedimentos da zona não-saturada de uma microbacia no nordeste paraense

    Microsoft Academic Search

    Lilianne Maia Lima; Eliene Lopes de Souza; Ricardo de Oliveira Figueiredo

    2007-01-01

    On smallholder farms of eastern Amazonia, in particular the northeast of the Pará state, heavy by pesticide applications at industrial half- perennial crops are very common. Due to their large use, mainly the dimethoate, in the catchment of the Cumaru stream, Igarapé-Açu county, we evaluated the retention process of this compound in samples of the non saturated zone, as well

  16. Transferencia de genes plasmídicos de resistencia a antibióticos mediante conjugación entre cepas de Escherichia coli provenientes de procesos diarréicos de niños menores a 3 años de edad. Hospital Materno Infantil de la ciudad de La Paz

    Microsoft Academic Search

    IRIARTE L. A ndrea Jimena

    2005-01-01

    Escherichia coli is the major etiological agent causing enterobacterial of diarrhea in children population. We study the transfer by conjugation of plasmidics genes of resistance to antibiotics in E. coli coming from the feces of children less than 3 years with diarrhea that they was attended at clinical laboratory of the Hospital Materno Infantil from April to December of the

  17. Uso de granos secos con sol Ubles ( ddgs ) provenientes de la destilería del maíz en s Uplementos para v acas lactantes en pastoreo de estrella africana ( Cynodon nlemfluensis)1

    Microsoft Academic Search

    Sofía Macaya-Quirós; Augusto Rojas-Bourrillón

    Use of corn dry distillers grains plus solubles ( ddgs ) in supplements for lactating cows grazing african s tar grass (Cynodon nlemfluensis). A study was carried out with dry corn distillers grains plus solubles (DDGS), to evaluate the effect of including different levels of this ingredient in the diet of lactating dairy cows grazing African Star grass, on milk

  18. Doppel-Flat Paket 2.000 16.000

    E-print Network

    Gediga, Günther

    , Monaco, Niederlande, Norwegen, Österreich, Portugal, San Marino, Schweden, Schweiz, Ungarn, USA, Zypern, Montenegro, Neuseeland, Nigeria, Norwegen, Österreich, Panama, Peru, Polen, Portugal, Russland, Schweiz

  19. Si comunica che i colloqui , per l'assegnazione delle borse di collaborazione a supporto dell'Area per l'Internazionalizzazione, avranno luogo il giorno 26.11.2014 a partire dalle

    E-print Network

    Guidoni, Leonardo

    PAGANESSI SOFIA PARATORE DANIELE PESCI FEDERICA SILVANA PETRIGLIA MARCELLA PIGNATARO FRANCESCA RAGO LUCCI ANDREA MACCIACCHERA ZULUAGA VICTORIA STEFANIA MARANNINO DANIELE MARINO VALENTINA MASSENZIO MARIA

  20. LONG EXPOSURE POINT SPREAD FUNCTION ESTIMATION FROM SOLAR ADAPTIVE OPTICS LOOP DATA

    E-print Network

    ABSTRACT LONG EXPOSURE POINT SPREAD FUNCTION ESTIMATION FROM SOLAR ADAPTIVE OPTICS LOOP DATA by Jose Marino Adaptive optics (AO) systems provide partial correction to wavefront distortions introduced ESTIMATION FROM SOLAR ADAPTIVE OPTICS LOOP DATA Jose Marino Dr. Thomas Rimmele, Dissertation Co-Advisor Date

  1. 76 FR 4380 - Notice of Permit Applications Received Under the Antarctic Conservation Act of 1978 (Pub. L. 95-541)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-25

    ...Goodall, Sarmiento 44, 9410 Ushuaia, Tierra del Fuego, ARGENTINA. Permit Application...Birds) which have been carried out in Tierra del Fuego since 1976. Skeletons from...Marinos Australes at Estancia Harberton, Tierra del Fuego (inaugurated in 2001)....

  2. 26 CFR 1.955-4 - Definition of less developed country.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...section with respect to— Australia Austria Belgium CanadaDenmark France Germany (Federal Republic) Hong Kong Italy Japan Liechtenstein Luxembourg Monaco Netherlands New Zealand Norway Union of South Africa San Marino...

  3. 15 CFR Supplement No. 3 to Part 744 - Countries Not Subject to Certain Nuclear End-Use Restrictions in § 744.2(a)

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...End-Use Restrictions in § 744.2(a) Australia Austria Belgium Canada Denmark Finland France Germany Greece Iceland Ireland Italy (includes San Marino and Holy See) Japan Luxembourg Netherlands New Zealand Norway...

  4. 198 SDSU General Catalog 2012-2013 Computer Engineering

    E-print Network

    Gallo, Linda C.

    198 SDSU General Catalog 2012-2013 Computer Engineering In the College of Engineering OFFICE., Panos Chair: Tummala Coordinator for Computer Engineering: Marino The Radio Frequency Communications and Computer Engineering Doctor of Philosophy degree in engineering sciences: (bioengineering), (electrical

  5. 200 SDSU General Catalog 2013-2014 Computer Engineering

    E-print Network

    Gallo, Linda C.

    200 SDSU General Catalog 2013-2014 Computer Engineering In the College of Engineering OFFICE., Panos Chair: Tummala Coordinator for Computer Engineering: Marino The Radio Frequency Communications and Computer Engineering Doctor of Philosophy degree in engineering sciences: (bioengineering), (electrical

  6. 196 SDSU General Catalog 2011-2012 Computer Engineering

    E-print Network

    Gallo, Linda C.

    196 SDSU General Catalog 2011-2012 Computer Engineering In the College of Engineering OFFICE., Panos Chair: Tummala Coordinator for Computer Engineering: Marino The Radio Frequency Communications Engineering Doctor of Philosophy degree in engineering sciences: (bioengineering), (electrical and computer

  7. 192 SDSU General Catalog 2010-2011 Computer Engineering

    E-print Network

    Gallo, Linda C.

    192 SDSU General Catalog 2010-2011 Computer Engineering In the College of Engineering OFFICE: Tummala Coordinator for Computer Engineering: Marino The Radio Frequency Communications Systems Industry Assistant Professor: Sarkar Offered by the Department of Electrical and Computer Engineering Doctor

  8. DETERMINANTS OF OUTCOMES OF AGONISTIC INTERACTIONS AMONG MALE CALIFORNIA SEA LIONS

    E-print Network

    Gerber, Leah R.

    de Ecologi´a de Pinni´pedos ``Burney J. Le Boeuf '' Centro Interdisciplinario de Ciencias Marinos of a wide range of species provide support for the resident advantage and initiator advantage hypotheses

  9. BioMed Central Page 1 of 13

    E-print Network

    Jordan, King

    Email: Panayiotis Tsaparas - tsaparas@cs.helsinki.fi; Leonardo Mariño-Ramírez - marino@ncbi.nlm.nih.gov; Olivier Bodenreider - olivier@nlm.nih.gov; Eugene V Koonin* - koonin@ncbi.nlm.nih.gov; I King Jordan

  10. Relationships between home environment and scholastic behavior in a disadvantaged population

    Microsoft Academic Search

    Thomas Kellaghan

    1977-01-01

    Examined relationships between home environmental factors and measures of scholastic ability and attainment for 60 8–9 yr olds living in a disadvantaged area. Six measures of home environmental process variables were obtained for each S. Six measures of scholastic behavior were also obtained; these were derived from the Stanford-Binet Intelligence Scale, Culture Fair Intelligence Test (Scale 1), Marino Graded Word

  11. Literacy and Community. The Twentieth Yearbook: A Peer Reviewed Publication of the College Reading Association, 1998. [Papers from the College Reading Association Conference, 1997].

    ERIC Educational Resources Information Center

    Sturtevant, Elizabeth G., Ed.; Dugan, JoAnn, Ed.; Linder, Patricia, Ed.; Linek, Wayne M., Ed.

    This 20th Yearbook of the College Reading Association reflects the theme of "community" again and again, in diverse ways. First in the yearbook are the Presidential Address by Marino C. Alvarez, "Adolescent Literacy: Are We in Contact?" and the three Keynote Addresses: "My Life in Reading" (J. Chall); "A Social-Constructivist View of Family…

  12. FEDERAL WORK STUDY ACADEMIC YEAR 2010-11

    E-print Network

    Garfunkel, Eric

    Asst. -Student Asst. James Marino (856) 225-6046 Center for Children & Childhood Studies 325 Cooper Doreen Wheeler (856) 225-6349 Economics Rm. 332 Armitage Hall -Student Asst. Dr. T. Yamada Joyce-6251 Foreign Language 4th Floor Armitage Hall -Research Asst. Dr. Jonathan Tittler Joyce Nathanson (856) 225

  13. Concepts & Procedures. [SITE 2002 Section].

    ERIC Educational Resources Information Center

    Sarner, Ronald, Ed.; Mullick, Rosemary J., Ed.; Bauder, Deborah Y., Ed.

    This document contains the following full and short papers on concepts and procedures from the SITE (Society for Information Technology & Teacher Education) 2002 conference: "Exploring Minds Network" (Marino C. Alvarez and others); "Learning Communities: A Kaleidoscope of Ecological Designs" (Alain Breuleux and others); "PDA's and Research: A…

  14. Eurographics / IEEE Symposium on Visualization 2011 (EuroVis 2011) H. Hauser, H. Pfister, and J. J. van Wijk

    E-print Network

    . van Wijk (Guest Editors) Volume 30 (2011), Number 3 Prostate Cancer Visualization from MR Imagery and MR Spectroscopy Joseph Marino and Arie Kaufman Stony Brook University, NY, USA Abstract Prostate is integrated into a volume rendering framework which allows the user to view the prostate gland, the multi

  15. Abstract The pathologic hallmark of tuberculosis is the granuloma. A granuloma is a multifaceted cellular structure that serves to focus the host immune response,

    E-print Network

    Kirschner, Denise

    127 Abstract The pathologic hallmark of tuberculosis is the granuloma. A granuloma tuberculosis infection, and if a granuloma is capable of inhibiting or killing most of the M. tuberculosis Granuloma Formation and Function in Tuberculosis Mohammad Fallahi-Sichani, Simeone Marino, JoAnne L. Flynn

  16. TNF and IL-10 are major factors in modulation of the phagocytic cell environment in lung and lymph node in tuberculosis: A next-generation

    E-print Network

    Kirschner, Denise

    node in tuberculosis: A next-generation two-compartmental model Simeone Marino a , Amy Myers b , Jo a c t Tuberculosis (TB) is one of the earliest recorded human diseases and still one of the deadliest worldwide. Its causative agent is the bacteria Mycobacterium tuberculosis (Mtb). Cytokine

  17. KINEMATICS OF THE FOOT AND ANKLE IN FORWARD ICE HOCKEY SKATING

    Microsoft Academic Search

    David Pearsall; Rene Turcotte; Richard Lefebvre; Hamid Bateni; Maria Nicolaou

    INTRODUCTION: Studies on the kinematics of ice hockey skating have focused mainly on the stride rate and stride length (Marino, 1977, 1979), and on the effectiveness of starts, turns and stops (Naud & Holt 1979, 1980). Hoshizaki et al. (1989) are among the few that have examined foot kinematics during skating using a two dimensional high-speed camera system. However, using

  18. List of major recent projects -Lista de los proyectos principales Vulnerabilidad, servicios ecosistmicos y planeamiento del territorio rural "VESPLAN"

    E-print Network

    Rey Benayas, José María

    plagas en cultivos leñosos mediante aves insectívoras (Ministerio de Agricultura, Alimentación y Medio Medio Ambiente y Medio Rural y Marino, Orden ARM/847/2010, 2010). Red internacional de inventarios (pasiva y activa) en la dinámica y diversidad de especies leñosas y aves (CICYT, ref. CGL2007-60533/BOS

  19. Real sea experiment of ocean nutrient enhancer \\

    Microsoft Academic Search

    K. Ouchi; A. J. Murphy

    2003-01-01

    The five years project of increasing a primary production and making a new fishing ground by upwelling deep ocean water (DOW) which is very rich in nutrient salt such as Nitrogen, Phosphorus, etc. was commenced in the year of 2000, sponsored by the Fisheries Agency of Japanese Government and Marino-Forum 21. In the open ocean, now, there are no successful

  20. CursodeEvaluacindeImpactoAmbiental PROCEDIMIENTO ADMINISTRATIVO DE LA

    E-print Network

    Espigares, Tíscar

    CursodeEvaluacióndeImpactoAmbiental 1 TEMA 4 PROCEDIMIENTO ADMINISTRATIVO DE LA EVALUACIÓN Ministerio de Medio Ambiente, y Medio Rural y Marino. · El proceso de Evaluación Ambiental de Proyectos. · Medidas para la eficiencia de la tramitación de la evaluación ambiental · El Proceso de Evaluación

  1. Summer 2008 NH Arc Users Group Meeting Date & Time: June 12, 9:00 am 2:00 pm

    E-print Network

    New Hampshire, University of

    use policy in Peterborough. 12:00-12:45 Angelo Marino, City of Nashua, NH Capturex for ArcGIS Angelo, the Chief Assessor/GIS Coordinator for Nashua, will discuss how the new Capturex extension for Arc explored for incorporation in various departments in the city of Nashua. To use the extension, you simply

  2. Desarrollo costero y conservacin marina en armona con las personas

    E-print Network

    Richner, Heinz

    también explotan los recursos del mar pero que no se preocupan por el desarrollo sostenible. LaDesarrollo costero y conservación marina en armonía con las personas Los debates sobre la conservación marino costera El desarrollo y conservación de las costas de Costa Rica es concebido de formas

  3. OBSERVATIONS ON FISHES AND OTHER BIOTA OF

    E-print Network

    344 OBSERVATIONS ON FISHES AND OTHER BIOTA OF EAST LAGOON, GALVESTON ISLAND Marino Biological BIOTA OF EAST LAGOON, GALVESTON ISLAND By Edgar L. Arnold, Jr., Ray S. Wheeler, and Kenneth N. Baxter of plankton sets of culverts. #12;OBSERVATIONS ON FISHES AND OTHER BIOTA OF EAST LAGOON, GALVESTON ISLAND

  4. Segmentacion linguistica de tuplas para el modelado de la traduccion estocastica mediante n-gramas

    E-print Network

    de Gispert, Adrià

    -gramas Adri`a de Gispert , Jos´e B. Mari~no Centre de Recerca TALP Universitat Polit`ecnica de Catalunya (UPC´ia, que en realidad no es ninguna palabra. Es- te modelo tiene sus or´igenes en la traducci´on es- toc

  5. Why Should Community College Faculty Write Grant Proposals?

    ERIC Educational Resources Information Center

    Renninger, Phyl; Meilof, Anne; Pitts, Todd; Smalley, Janie

    2007-01-01

    Community colleges have seen dramatic enrollment increases (Kasper, 2002), and some are now offering 4-year degrees (Evelyn, 2003). They are eligible for more grants than in the past, and community college funding from state and federal appropriations is shrinking (Lawrence & Marino, 2003). For these reasons, it is imperative that community…

  6. Implementing Spi Calculus Using Nominal Techniques

    E-print Network

    Miculan, Marino

    Implementing Spi Calculus Using Nominal Techniques Temesghen Kahsai1, and Marino Miculan2 1 on Isabelle/HOL for reasoning formally about crypto- graphic protocols, expressed as processes of the spi Springer-Verlag Berlin Heidelberg 2008 #12;Implementing Spi Calculus Using Nominal Techniques 295 Among

  7. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-print Network

    Likens, Gene E.

    are rarely observed in the plankton of estuaries even though most temperate zone estuaries are strongly N on planktonic nitrogen fixation in saline estuaries. I. Nutrient and trophic controls Roxanne Marino1, 2, yet they are rarely observed in estuaries at salinities >10 ppt, even when strongly N limited

  8. FindingHerOwnWay "You have Graves disease; I'll see you in a year."

    E-print Network

    the eyes bulge outward. This can cause pain, dry eye, double vision and occasionally blindness. "I had with the first eye doctor, Patricia Marino thought that she had better look elsewhere -- she felt lost. "I couldn thyroid eye disease by her endocrinologist. Graves disease is an autoimmune condition associated

  9. Special Section Vulnerability and Resilience of Tropical Forest

    E-print Network

    Mathis, Wayne N.

    . STORK, JONATHAN A. CODDINGTON, ROBERT K. COLWELL, ROBIN L. CHAZDON, CHRISTOPHER W. DICK,§ CARLOS A-1739.2009.01335.x #12;Stork et al. 1439 animales, son m´as propensos a la extinci´on que los organismos marinos. Las

  10. A&A 511, A29 (2010) DOI: 10.1051/0004-6361/200913216

    E-print Network

    Bianchi, Luciana

    2010-01-01

    225. We obtained the UV galaxy surface photometry and, for LGG 225, the only group covered by the SDSS the possible evolution within groups and clusters. Among them, the galaxy velocity dispersion in groups evolution in Local Group analogs I. A GALEX study of nearby groups dominated by late-type galaxies A. Marino

  11. Boosting the voltage of a salinity-gradient-power electrochemical cell by means of complex-forming solutions

    E-print Network

    Carati, Andrea

    Boosting the voltage of a salinity-gradient-power electrochemical cell by means of complex-forming solutions M. Marino, L. Misuri, A. Carati, and D. Brogioli Citation: Applied Physics Letters 105, 033901 solution J. Chem. Phys. 113, 3519 (2000); 10.1063/1.1287785 This article is copyrighted as indicated

  12. Novo método de preparação palinológica para aumentar a recuperação de dinoflagelados

    Microsoft Academic Search

    ANTONIO DONIZETI DE OLIVEIRA; GRACIANO MENDONÇA FILHO; TAÍSSA RÊGO MENEZES

    2004-01-01

    RESUMO - O método aqui apresentado tem por objetivo melhorar a recuperação de palinomorfos em amostras de sedimentos quaternários da bacia de Campos. Nas preparações tradicionais, tanto palinológicas quanto de palinofácies, a fração mineral é eliminada por acidificação, com o objetivo de concentrar o maior número possível de palinomorfos e de matéria orgânica nas lâminas. Entretanto, ambas utilizam o descarte

  13. Identifying coseismic subsidence in tidal-wetland stratigraphic sequences at the Cascadia subduction zone of western North America

    Microsoft Academic Search

    Alan R. Nelson; Ian Shennan; Antony J. Long

    1996-01-01

    Tidal-wetland stratigraphy reveals that great plate boundary earthquakes have caused hundreds of kilometers of coast to subside at the Cascadia subduction zone. However, determining earthquake recurrence intervals and mapping the coastal extent of past great earthquake ruptures in this region are complicated by the effects of many sedimento!ogic, hydrographic, and oceanographic processes that occur on the coasts of tectonically passive

  14. Atividade DE DE ExP Est proj mon ic ext PET eJr PartEvtapEvtorgEvtcurProfrepAcadofDidporgInstvoluntCultArtCert Carga Mx. Validvel 60 30 60 60 60 60 60 60 60 60 30 10 12 30 10 12 12 12 12 60

    E-print Network

    Paraná, Universidade Federal do

    Andrade 2 2 10 Anderson Ferreira 2 5 7 11 Andre G Dias de Almeida 30 12 6 12 60 ? 12 Andre Gustavo da 4 4 16 Artur Victor Marino 12 12 17 Ayr Rodrigo Freitas 4 4 18 Barbara N Rodrigues 2 2 19 Bruna de 5 92 João Pedro Fabricio de Meira Albach 4 12 12 28 93 Jonasta S 0 94 Jonathan Costa 4 4 95 Jose A F

  15. An Analysis of Toponymic Homonyms in Gazetteers: Country-Level Duplicate Names in the National Geospatial-Intelligence Agency’s Geographic Names Data Base

    E-print Network

    Caldwell, Douglas R.

    2008-08-20

    , Gaza Strip, Gibraltar, Marshall Islands, Saint Helena, and Swaziland to 35,392 names in Russia. The median value for countries with at least one toponymic homonym was 474.50. The geographical distribution of this pattern shows three areas... Cook Islands Marshall Islands Djibouti Saint Kitts And Nevis Dominica Seychelles Falkland Islands Saint Helena French Polynesia San Marino Gibraltar Saint Vincent And The Grenadines Gaza Strip West Bank Jersey Wallis And Futuna Kuwait Swaziland...

  16. A review of "The Cosmological Glass: Renaissance Diagrams of the Universe." by S. K. Heninger Jr. 

    E-print Network

    Kate Gartner Frost

    2006-01-01

    to the libraries of literary scholars of the early modern era and historians alike. S. K. Heninger, Jr. The Cosmological Glass: Renaissance Diagrams of the Universe. San Marino, CA: Huntington Library Press, 2005. 232 pp. + 154 illus. $21.95. Review by KATE..., in this reviewer?s experience, put paid to that idea. Now, after a quarter century, The Cosmographical Glass has 18 SEVENTEENTH-CENTURY NEWS been reprinted in paperback and still at a bargain price. Taking his title from William Cuningham?s 1559 treatise, Heninger...

  17. NUTRITIONAL STATUS AND CLINICAL OUTCOME IN POST-TERM NEONATES UNDERGOING SURGERY FOR CONGENITAL HEART DISEASE

    E-print Network

    Mitting, Rebecca; Marino, Luise; Macrae, Duncan; Shastri, Nitin; Meyer, Rosan; Pathan, Nazima

    2015-01-01

    49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 REFERENCES: 1. Hoffman JI, Kaplan S: The incidence of congenital heart disease. Journal of the American College of Cardiology 2002, 39(12):1890-1900. 2. Thommessen M, Heiberg A... : Congenital Heart Disease in Low-Birth-Weight Infants: Effects of Small for Gestational Age (SGA) Status and Maturity on Postoperative Outcomes. Pediatric cardiology 2014. 15. Anderson JB, Kalkwarf HJ, Kehl JE, Eghtesady P, Marino BS: Low weight-for-age z...

  18. Talking about Life

    NASA Astrophysics Data System (ADS)

    Impey, Chris

    2010-08-01

    Preface; Part I. Introduction Timothy Ferris, Iris Fry, Steven Dick, Ann Druyan, Pinky Nelson, Neil Tyson, Steve Benner and William Bains; Part II. Earth Roger Buick, Lynn Rothschild, John Baross, Joe Kirschvink, Andrew Knoll, Simon Conway Morris, Roger Hanlon and Lori Marino; Part III. Solar System Chris McKay, David Grinspoon, Jonathan Lunine, Carolyn Porco, Laurie Leshin, Guy Consolmagno and Peter Smith; Part IV. Exoplanets Alan Boss, Geoff Marcy, Debra Fischer, Sara Seager, David Charbonneau and Vikki Meadows; Part V. Frontiers Jill Tarter, Seth Shostak, Ray Kurzweil, Nick Bostrom, Paul Davies, Martin Rees, Ben Bova and Jennifer Michael Hecht; Reading list; Glossary; Index.

  19. Instability of the calcarenite plate on which the village of Verucchio stands, carried by the Val Marecchia argillaceous nappe.

    NASA Astrophysics Data System (ADS)

    Toni, G.; Rizzo, V.

    2003-04-01

    The study considered the instability of the San Marino calcarenite plate, attributable to the initial Miocene cycle. The instability phenaomena seem to be essentially associated with the faults affecting this plate, running in an east-west direction and linked to the gravitational tectonics of the underlying Val Marecchia argillaceous nappe, as a consequence of the superimposition of media of different rigidities. The physical-mechanical behaviour of the overlying calcarenite plate is, in fact, largely rigid-plastic, while the underlying cretaceous-eocene argillaceous nappe of the "Argille Scagliose" has a largely elastic-plastic behaviour. Geognostic surveys performed near the main square of Verucchio (Piazza Malatesta) show an upwelling of the argillaceous material of the underlying nappe along a fault plane and lateral spreading below the largely carbonate debris overlying the San Marino calcarenites. Subsequent stability analysis performed using the "Plaxis" finite elements calculation code showed conditions of limit equilibrium, togheter with a downward movement of the gravitational nappe at the north-east front of the calcarenite plate.

  20. Installing a Subsurface Drip Irrigation System for Row Crops (Spanish) 

    E-print Network

    Enciso, Juan

    2004-09-07

    subprincipal componen un bloque de campo o secci?n de riego. Varios bloques de campo pueden ser agrupados juntos formando una estaci?n o zona de riego, y pueden operar simult?neamente. El agua se suministra a las l?neas de goteo de los bloques de campo por... medio de la l?nea distribuido- ra (subprincipal) (Fig. 1). En algunos sistemas per- manentes, las l?neas de goteo est?n tambi?n conec- tadas a una l?nea de lavado, para que el sedimento que se ha acumulado pueda ser lavado de las l?neas de goteo...

  1. Second Life: contextualização e inserção social do ensino da informática

    Microsoft Academic Search

    Leonel Morgado

    2008-01-01

    Resumo - Desde 2006, realizam-se na UTAD ensaios de utilização do mundo virtual Second Life® no ensino de programação de computadores. Nestes dois anos foram identificados problemas no uso da plataforma para este fim, mas também vantagens, nem sempre provenientes dos locais esperados: a imersão social e cultural dos alunos foi factor importante de compreensão dos conceitos informáticos. A imersão

  2. Esquema Hibrido para Amostragem de Mapas de Iluminac~ao em renderizac~oes foto-realistas

    E-print Network

    Esquema H´ibrido para Amostragem de Mapas de Iluminac¸~ao em renderizac¸~oes foto-realistas Aldo R¸~ao foto- realista com mapas de iluminac¸~ao provenientes de cenas reais. Desenvolvemos um sistema que¸~ao gr´afica. Atual- mente a renderizac¸~ao foto-realista de cenas sint´eticas com iluminac

  3. En busca de un modelo Benchmark univariado para predecir la tasa de desempleo

    Microsoft Academic Search

    Javier Contreras-Reyes; Byron Idrovo

    2011-01-01

    En este trabajo se analiza la precisión y la estabilidad de las predicciones de la tasa de desempleo de Chile, obtenidas de una familia de modelos SARIMA, entre febrero de 1986 y febrero de 2010. Las proyecciones SARIMA son comparadas con las provenientes de modelos univariados, incluyendo los benchmarks predictivos. Simultáneamente, se ajustó un modelo ARFIMA (Autorregresive Fractionary Integrated Moving

  4. íNDICE DE FIBRAS FLUTUANTES E DE FIBRAS CURTAS E UNIFORMIDADE DE COMPRIMENTO EM ALGODOEIRO HERBÁCEO DA AMÉRICA, ÁFRICA E EUROPA1

    Microsoft Academic Search

    FARIAS DE SANTANA; NAPOLEÃO ESBERARD DE MACÊDO; JAILTON GOMES DA SILVA; JOSÉ CLÁUDIO DA SILVA; E JOSÉ RODRIGUES PEREIRAS

    RESUMO - Objetivando-se a determinação das variáveis índice de fibras flutuantes (FFI). índice de fibras curtas e uniformidade de comprimento de fibra, fatores importantes para a determinação das qualidades intrínsecas da fibra à luz dos novos processos de fiação e tecelagem, realizou-se o presente trabalho, envolvendo algodões proveniente de várias regiões produtores do Brasil e de outros países que para

  5. Características de Carcaça e do Couro de Bovinos Precoces e Superprecoces

    Microsoft Academic Search

    Luis Carlos Vinhas Ítavo; Fabio Candal Gomes; Manuel Antônio Chagas Jacinto; Celeste Brandão; Ferreira Ítavo; Liliane Suguisawa; Alex Resende; Pesquisador Embrapa; Gado de Corte

    6 Mestrando do Programa de Pós-graduação em Zootecnia - UESB\\/Itapetinga. Bolsista CNPq. Resumo : Objetivou-se avaliar o efeito do sistema de produ ção sobre características produtivas e do couro de bovinos cruzados precoces e superprecoces. Foram utilizados 36 animais, sendo 16 provenientes do sistema superprecoce (10 machos castrados e seis fêmeas), terminados em confinamento e 20 animais do sistema precoce

  6. Briófitas do Espírito Santo existentes no Herbário Científico do Estado \\

    Microsoft Academic Search

    Olga Yano; Denilson F. Peralta

    RESUMO: Estão sendo referidas as briófitas provenientes do estado do Espírito Santo, depositadas no herbário SP. Foram encontradas 265 espécies de briófitas, sendo 147 musgos, 115 hepáticas e 3 antóceros, distribuídas em 63 famílias e 128 gêneros. Destas, 83 espécies são ocorrências novas para o estado (55 musgos, 26 hepáticas e 2 antóceros) e Racomitrium microcarpon (Hedw.) Brid., é uma

  7. Un estudio de las potencialidades del mercado para el consumo de agua purificada de la fuente de Azinyahualco

    Microsoft Academic Search

    Agustín Santiago; Octaviano Juárez; Carlos Bouza

    2008-01-01

    Actualmente la comercialización del agua embotellada ha cobrado importancia en la mayoría de países de América latina, realizando fuertes inversiones en su desarrollo tanto el capital transnacional como los capitales nativos. El presente trabajo presenta un estudio de mercado solicitado por los ejidatarios del poblado Azinyahualco, Municipio de Chilpancingo, estado de Guerrero, México. Dichos ejidatarios pretenden comercializar el agua proveniente

  8. Universidad Autonoma de Madrid Escuela politecnica superior

    E-print Network

    Autonoma de Madrid, Universidad

    informaci´on proveniente del medidor el´ectrico. El sistema NIALM propuesto en este trabajo se basa en el an´on de un sistema de monitorizaci´on no intrusivo de cargas de dispositivos (Non-Intrusive Appliance Load forma remota mediante el sistema de monitoreo web desarrollado. Palabras Clave NIALMS, no intrusivo

  9. Una Evaluación Geográfica de la Política de Educación Media Superior de la Ciudad de México

    Microsoft Academic Search

    LAURA CERVANTES-SALCIDO; CARLOS J. VILALTA-Y PERDOMO

    2006-01-01

    En este trabajo presentamos una evaluación geográfica de la política de las preparatorias creadas y administradas por el gobierno de la ciudad de México. La revisión teórica y evaluación estadística realizadas nos ha permitido (1) construir relaciones explicativas útiles entre varios conceptos de teorías urbanas provenientes de escuelas divergentes, y de disciplinas diferentes, y a la vez (2) hacer una

  10. Se busca reducir de forma drástica la exposición a la radiación en los exámenes por imágenes

    Cancer.gov

    La exposición a la radiación proveniente de exámenes médicos por imaginología en los Estados Unidos ha aumentado en forma significativa. El NCI y diversas organizaciones patrocinaron una reunión en 2011 para promover esfuerzos para reducir la exposición a la radiación por imaginología.

  11. PPRROOGGRRAAMMAA DDEE PPSSGGRRAADDUUAAOO EEMM EEDDUUCCAAOO MMEESSTTRRAADDOO EEMM EEDDUUCCAAOO

    E-print Network

    situação educacional. Caracterizase por reunir professores e estudantes provenientes de diversas; 06 créditos em Pesquisa Educacional I e II; 06 créditos em disciplinas optativas de fundamentação; familiaridade com questões do campo educacional. A prova escrita terá duas questões relacionadas à

  12. Nuevos paradigmas en ecologia y su influencia sobre el conocimiento de la dinamica

    E-print Network

    Veblen, Thomas T.

    de la teoría de dinámica de la vegetación y presenta brevemente estudios de casos provenientes de la contemporáneas al estudio de la dinámica de bosques. La teoría sucesional clásica enfatizaba la naturaleza del sitio ("condiciones iniciales"). Las aproximaciones actuales al estudio de la dinámica de la

  13. Estudo dos níveis de exposição e efeitos à saúde por mercúrio metálico em uma população urbana de Poconé, Mato Grosso, Brasil

    Microsoft Academic Search

    Volney de M. Câmara; Alexandre P. Silva; Fátima Pivetta; Maurício A. Perez; Maria Imaculada M. Lima; Maria Izabel de F. Filhote; Lidia Maria B. Tavares; Marcos V. Maciel; F. V. Alheira; T. Dantas; M. S. Martins

    1996-01-01

    Resumo Foram avaliados os níveis de exposição e dos efeitos causados por emissões na atmosfe- ra de mercúrio metálico proveniente de casas compradoras de ouro na população do Município de Poconé, Estado de Mato Grosso. O projeto foi desenvolvido através da comparação da morbi- dade referida, dos exames clínicos e da análise dos teores de mercúrio na urina de três

  14. Nuevos materiales de titanosaurios (Sauropoda) en el Cretácico Superior de Mato Grosso, Brasil

    Microsoft Academic Search

    ALDIRENE COSTA FRANCO-ROSAS; LEONARDO SALGADO; CLAUDIO FABIÁN ROSAS

    2004-01-01

    RESUMO - São descritos restos ósseos provenientes da bacia Bauru (Formação Cambambe, Mato Grosso), atribuídos a Gondwanatitan, e definido um novo taxon de titanossauros: Aeolosaurini. A presença deste clado em níveis cronocorrelatos estratigraficamente na Bacia Bauru (estados de São Paulo, Minas Gerais e Mato Grosso) e em algumas localidades do Norte da Patagônia (Argentina) sugere a existência de uma província

  15. Exact Slope and Interpolating Functions in ABJM Theory

    E-print Network

    Gromov, Nikolay

    2014-01-01

    Using the Quantum Spectral Curve approach we compute exactly an observable (called slope function) in the planar ABJM theory in terms of an unknown interpolating function h(\\lambda) which plays the role of the coupling in any integrability based calculation in this theory. We verified our results with known weak coupling expansion in the gauge theory and with the results of semi-classical string calculations. Quite surprisingly at strong coupling the result is given by an explicit rational function of h(\\lambda) to all orders. By comparing the structure of our result with that of an exact localization based calculation of Drukker, Marino and Putrov for a similar observable we conjecture an exact expression for h(\\lambda).

  16. Two new Typhloreicheia species from Sardinia and their biogeographical significance (Coleoptera, Carabidae, Scaritinae).

    PubMed

    Casale, Achille; Marcia, Paolo

    2011-01-01

    Typhloreicheia monachasp. n. and Typhloreicheia ilianaesp. n. are described from two caves of Central-Eastern Sardinia (Nuoro province): the Bue Marino cave and the Nurra 'e Pradu cave, respectively. Both caves are located in the part of the island where many highly specialised subterranean carabid beetles are localised. Typhloreicheia monacha is apparently related to two other species of the same area, i.e. Typhloreicheia onnisi Casale & Magrini, 2004 and Typhloreicheia elegans (Dodero, 1916); Typhloreicheia ilianae is closely related to Typhloreicheia henroti Jeannel, 1957, known from a cave near Dorgali. Relationships and diagnostic features among these taxa are discussed and illustrated, and a key for identification of the specialised subterranean Typhloreicheia species of Sardinia is provided. The hypothesis of adaptive radiation of Reicheiina species in Sardinia, recently proposed by the senior author of this contribution, is further elaborated in light of new data. PMID:22140340

  17. Two new Typhloreicheia species from Sardinia and their biogeographical significance (Coleoptera, Carabidae, Scaritinae)

    PubMed Central

    Casale, Achille; Marcia, Paolo

    2011-01-01

    Abstract Typhloreicheia monacha sp. n. and Typhloreicheia ilianae sp. n. are described from two caves of Central-Eastern Sardinia (Nuoro province): the Bue Marino cave and the Nurra ‘e Pradu cave, respectively. Both caves are located in the part of the island where many highly specialised subterranean carabid beetles are localised. Typhloreicheia monacha is apparently related to two other species of the same area, i.e. Typhloreicheia onnisi Casale & Magrini, 2004 and Typhloreicheia elegans (Dodero, 1916); Typhloreicheia ilianae is closely related to Typhloreicheia henroti Jeannel, 1957, known from a cave near Dorgali. Relationships and diagnostic features among these taxa are discussed and illustrated, and a key for identification of the specialised subterranean Typhloreicheia species of Sardinia is provided. The hypothesis of adaptive radiation of Reicheiina species in Sardinia, recently proposed by the senior author of this contribution, is further elaborated in light of new data. PMID:22140340

  18. Survival and movements of Magellanic penguins rehabilitated from oil fouling along the coast of South America, 2000-2010.

    PubMed

    Ruoppolo, Valeria; Vanstreels, Ralph Eric Thijl; Woehler, Eric J; Heredia, Sergio Andres Rodríguez; Adornes, Andréa Corrado; da Silva-Filho, Rodolfo Pinho; Matus, Ricardo; Poleschi, Carla; Griot, Karen; Kolesnikovas, Cristiane K Miyaji; Serafini, Patrícia

    2012-07-01

    Oil pollution is a significant conservation concern. We examined data from six institutions along the coast of South America: Emergency Relief Team of the International Fund for Animal Welfare, Fundación Mundo Marino, Centro de Recuperação de Animais Marinhos, Natura Patagonia, Associação R3 Animal, and Mar del Plata Aquarium and data from resightings in Argentina, Brazil, Chile and Falkland/Malvinas Islands. From 2000 to 2010, 2183 oiled Magellanic penguins were rehabilitated as part of the routine activities of these institutions or during emergency responses to eight oil spills in which they were involved; all rehabilitated penguins were flipper banded and released. Since their release, 41 penguins were resighted until 31 December 2011. The results demonstrate that, when combined with other prevention strategies, the rehabilitation of Magellanic penguins is a strategy that contributes to the mitigation of adverse effects of oil spills and chronic pollution to the species. PMID:22683106

  19. Nonequilibrium dynamics of a noisy quantum Ising chain: Statistics of work and prethermalization after a sudden quench of the transverse field

    NASA Astrophysics Data System (ADS)

    Marino, Jamir; Silva, Alessandro

    2014-01-01

    We discuss the nonequilibrium dynamics of a quantum Ising chain following a quantum quench of the transverse field and in the presence of a Gaussian time-dependent noise. We discuss the probability distribution of the work done on the system both for static and dynamic noise. While the effect of static noise is to smooth the low energy threshold of the statistic of the work, appearing for sudden quenches, a dynamical noise protocol affects also the spectral weight of such features. We also provide a detailed derivation of the kinetic equation for the Green's functions on the Keldysh contour and the time evolution of observables of physical interest, extending previously reported results [Marino and Silva, Phys. Rev. B 86, 060408 (2012), 10.1103/PhysRevB.86.060408], and discussing the extension of the concept of prethermalization which can be used to study noisy quantum many-body Hamiltonians driven out of equilibrium.

  20. LITHIUM ABUNDANCES IN RED GIANTS OF M4: EVIDENCE FOR ASYMPTOTIC GIANT BRANCH STAR POLLUTION IN GLOBULAR CLUSTERS?

    SciTech Connect

    D'Orazi, Valentina [INAF-Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, I-35122, Padova (Italy); Marino, Anna F., E-mail: valentina.dorazi@oapd.inaf.i, E-mail: anna.marino@unipd.i [Dipartimento di Astronomia, Universita di Padova, vicolo dell'Osservatorio 3, I-35122, Padova (Italy)

    2010-06-20

    The determination of Li and proton-capture element abundances in globular cluster (GC) giants allows us to constrain several key questions on the multiple population scenarios in GCs, from formation and early evolution to pollution and dilution mechanisms. In this Letter, we present our results on Li abundances for a large sample of giants in the intermediate-metallicity GC NGC 6121 (M4), for which Na and O have been already determined by Marino et al. The stars analyzed are both below and above the red giant branch bump luminosity. We found that the first and second generation stars share the same Li content, suggesting that a Li production must have occurred. This provides strong observational evidence supporting the scenario in which asymptotic giant branch stars are GC polluters.

  1. Assessing ecological correlates of marine bird declines to inform marine conservation

    PubMed Central

    Vilchis, L Ignacio; Johnson, Christine K; Evenson, Joseph R; Pearson, Scott F; Barry, Karen L; Davidson, Peter; Raphael, Martin G; Gaydos, Joseph K

    2015-01-01

    Identifying drivers of ecosystem change in large marine ecosystems is central for their effective management and conservation. This is a sizable challenge, particularly in ecosystems transcending international borders, where monitoring and conservation of long-range migratory species and their habitats are logistically and financially problematic. Here, using tools borrowed from epidemiology, we elucidated common drivers underlying species declines within a marine ecosystem, much in the way epidemiological analyses evaluate risk factors for negative health outcomes to better inform decisions. Thus, we identified ecological traits and dietary specializations associated with species declines in a community of marine predators that could be reflective of ecosystem change. To do so, we integrated count data from winter surveys collected in long-term marine bird monitoring programs conducted throughout the Salish Sea—a transboundary large marine ecosystem in North America's Pacific Northwest. We found that decadal declines in winter counts were most prevalent among pursuit divers such as alcids (Alcidae) and grebes (Podicipedidae) that have specialized diets based on forage fish, and that wide-ranging species without local breeding colonies were more prone to these declines. Although a combination of factors is most likely driving declines of diving forage fish specialists, we propose that changes in the availability of low-trophic prey may be forcing wintering range shifts of diving birds in the Salish Sea. Such a synthesis of long-term trends in a marine predator community not only provides unique insights into the types of species that are at risk of extirpation and why, but may also inform proactive conservation measures to counteract threats—information that is paramount for species-specific and ecosystem-wide conservation. Evaluación de las Correlaciones Ecológicas de las Declinaciones de Aves Marinas para Informar a la Conservación Marina Resumen La identificación de los conductores del cambio ambiental en los grandes ecosistemas marinos es esencial para su conservación y manejo efectivo. Esto es un reto bastante grande, particularmente en los ecosistemas que trascienden fronteras internacionales, cuando el monitoreo y la conservación de especies migratorias de amplio rango y sus hábitats son logística y financieramente problemáticos. En este caso, usando herramientas tomadas de la epidemiología, elucidamos conductores comunes subyacentes en la declinación de especies dentro de un ecosistema marino, muy similar a cómo los análisis epidemiológicos evalúan los factores de riesgo para los resultados de salud negativos e informar mejor sus decisiones. Con esto, identificamos los rasgos ecológicos y las especializaciones de dieta asociados con la declinación de especies en una comunidad de depredadores marinos que podría ser un reflejo de cambios ambientales. Para lograr esto, integramos datos de conteo de programas de censos de invierno recolectados a lo largo de monitoreos a largo plazo de aves marinas llevados a cabo en el mar Salish – un gran ecosistema marino que trasciende fronteras en el noroeste del Océano Pacífico. Encontramos que las declinaciones por década en los conteos de invierno fueron más prevalentes entre los pescadores de persecución, como los álcidos (Alcidae) y los zambullidores (Podicipedidae), que tienen dietas especializadas basadas en peces forrajeros y que las especies con distribución amplia y sin colonias reproductivas locales estaban más predispuestas a estas declinaciones. Mientras que una combinación de factores posiblemente esté causando las declinaciones de especialistas de peces forrajeros, proponemos que los cambios en la disponibilidad de presas de niveles tróficos bajos pueden estar forzando cambios en la extensión invernal de aves pescadoras en el mar Salish. Dicha síntesis de tendencias a largo plazo en una comun

  2. DESINFESTA?ˆO E GERMINA?ˆO IN VITRO DE SEMENTES DE MOGNO (Swietenia macrophylla King)1

    Microsoft Academic Search

    Juliana Margarido; Fonseca Couto; Wagner Campos Otoni

    RESUMO ñ O presente trabalho teve como objetivos desenvolver tØcnicas de regeneraÁªo in vitro a partir de segmentos de epicÛtilo, epicÛtilo invertido e explantes foliares provenientes de pl‚ntulas de mogno (Swietenia macrophylla) germinadas em meio de cultura; e determinar a melhor concentraÁªo e tempo de exposiÁªo das sementes ao agente desinfestante, bem como a melhor posiÁªo de semeadura para germinaÁªo.

  3. EDITAL 72/2012 DA SEGUNDA CHAMADA PARA MATRCULA DOS CANDIDATOS APROVADOS EM LISTA DE ESPERA Plo

    E-print Network

    Paraná, Universidade Federal do

    CHAMADA - Vagas provenientes da desistência de alunos matriculados. 1.1 Polo Colombo ­ Turma-B Fabiana pessoalmente no Polo de Colombo até o dia 05/09/2012 de segunda a sexta-feira das 14 às 21 horas. POLO DE APOIO Fátima, 2º andar. CEP. 83405030. Colombo-PR. Coordenador do Polo: Suzimara do Rocio Scrok Brunoro

  4. Tracing the evolution within nearby galaxy groups: a multi-wavelength approach

    NASA Astrophysics Data System (ADS)

    Bettoni, Daniela; Marino, Antonina; Rampazzo, Roberto; Plana, Henri; Rosado, Margarita; Galletta, Giuseppe; Mazzei, Paola; Bianchi, Luciana; Buson, Lucio M.; Ambrocio-Cruz, Patricia; Gabbasov, Ruslan

    2015-03-01

    Evolutionary scenarios suggest that several mechanisms (from inner secular evolution to accretion/merging) may transform galaxy members, driving groups from an active star forming phase to a more passive, typical of dense environments. We are investigating this transition in a nearby group sample, designed to cover a wide range of properties (see also Marino et al. (2010), Bettoni et al. (2011) and Marino et al. (2012)). We study two groups, USGC U268 and USGC U376 located in different regions of the Leo cloud, through a photometric and kinematic characterization of their member galaxies. We revisit the group membership, using results from recent red-shift surveys, and we investigate their substructures. U268, composed of 10 catalogued members and 11 new added members, has a small fraction (~24%) of early-type galaxies (ETGs). U376 has 16 plus 8 new added members, with ~38% of ETGs. We find the significant substructuring in both groups suggesting that they are likely accreting galaxies. U268 is located in a more loose environment than U376. For each member galaxy, broad band integrated and surface photometry have been obtained in far-UV (FUV) and near-UV (NUV) with GALEX, and in u, g, r, i, z (SDSS) bands. H? imaging and 2D high resolution kinematical data have been obtained using PUMA Scanning Fabry-Perot interferometer at the 2.12 m telescope in San Pedro Mártir (Baja California, México). We improved the galaxy classification and we detected morphological and kinematical distortions that may be connected to either on-going and/or past interaction/accretion events or environmental induced secular evolution. U268 appears more active than U376, with a large fraction of galaxies showing interaction signatures (60% vs. 13%). The presence of bars among late-type galaxies is ~10% in U268 and 29% in U376. The cumulative distribution of (FUV - NUV) colors of galaxies in U268 is significantly different (bluer) than that of U376's galaxies. Most (80%) of the early-type members in U376 inhabits the red sequence, a large fraction of galaxies, of different morphological types, are located in the green valley, while the blue sequence is under-populated with respect to U268.

  5. Characterization of a Bacillus thuringiensis strain collection isolated from diverse Costa Rican natural ecosystems.

    PubMed

    Arrieta, Glen; Espinoza, Ana M

    2006-03-01

    Costa Rican natural ecosystems are among the most diverse in the world. For this reason, we isolated strains of the entomopathogenic bacteria Bacillus thuringiensis (Bt) to determine their diversity, distribution and abundance. A total of 146 Bt strains were obtained from environmental samples collected from diverse natural ecosystems and life zones of Costa Rica. We recovered Bt strains from 71%, 63%, 61% and 54% of soil samples, fresh leaves, other substrates and leaf litter respectively. Bt was isolated in 65% of the samples collected in the humid tropical forest in national parks (Braulio Carrillo, Gandoca Manzanillo, Sierpe, Hitoy Cerere, and Cahuita), and in 59% of the samples collected in the dry tropical forest (Parque Nacional Marino las Baulas, Palo Verde and Santa Rosa). In the very humid tropical forest (Tortuguero) Bt was isolated in 75% of the samples and in the very humid tropical forest transition perhumid (Carara) it was found in 69% of the samples. The strains exhibit a diverse number, size and morphology of parasporal inclusion bodies: irregular (47%), oval (20%), bipyramidal (3%), bipyramidal and cubic (1%), bipyramidal, oval and irregular (5%) and bipyramidal, oval and cubic crystals (2%). Strains isolated from Braulio Carrillo, Tortuguero and Cahuita, presented predominantly irregular crystals. On the other hand, more than 60% of the isolates from Térraba-Sierpe and Hitoy-Cerere had medium oval crystals. Strains from Gandoca-Manzanillo, Palo Verde and Carara presented mainly combinations of oval and irregular crystals. Nevertheless, the greatest diversity in crystal morphology was observed in those from Santa Rosa, Llanos del Rio Medio Queso and Parque Marino las Baulas. Protein analyses of the crystal-spore preparations showed delta-endotoxin with diverse electrophoretic patterns, with molecular weights in the range of 20 to 160 kDa. Fifty six percent of the strains amplified with the cry2 primer, 54% with vip3, 20% with cry1, 9% with cry3-cry7 and 8% with cry8. The cry11 and cyt genes were found in 8% and 7% of the strains, respectively. When analyzed with specific primers for the cryl subfamily, 13 different genetic profiles were obtained. In addition, twenty-four strains did not amplify with any of the primers used, suggesting they contain novel cry genes. The diversity of Bt genes found in this collection indicates it could have great potential for the control of different species of insect pests. The toxicological characterization of the strains by bioassays against important insect pests will provide useful information about their potential use for the formulation of biological insecticides and their respective cry and vip genes for the transformation of crops to confer resistance to insects. PMID:18457170

  6. Safe Operation of Backup Power Generators (Spanish) 

    E-print Network

    Smith, David

    2006-04-19

    un generador son el envenenamiento por mon?xido de carbono (CO) proveniente de los gases emitidos por el generador, la electrocuci?n y los incendios. Peligros del mon?xido de carbono El mon?xido de carbono es un subproducto sin olor ni color del... carbono experimentar?n una serie de s?ntomas. La exposici?n a niveles bajos puede tener como resultado dolores de cabeza, letargo, debilidad, n?usea y dolores musculares. La exposici?n a niveles altos puede causar par?lisis, inconsciencia e incluso la...

  7. The bottom quartile for health indices in America vs Europe.

    PubMed

    Shandera, Wayne Xavier

    2014-01-01

    The inequities in health outcomes in different parts of the developed world merit further analysis. An index comprising mortality and morbidity factors was composed for American states and European nations. Multiple factors and bottom quartile status were analyzed by regression methodology. The 51 American states (and District of Columbia) showed a "Health Index" value based on life expectancy at birth and morbidity determined by rates of cardiac disease and cancer that ranged from 63 (Mississippi and West Virginia) to 94 (Utah). The 48 of 51 European states with assessable data showed a Health Index based on life expectancy at birth and quality adjusted life years that ranged from 53 (Russia) to 98 (San Marino). American states with the lowest quartile values were clustered in the American South and Appalachian areas. European states ranking in the bottom quartile were typically from Eastern Europe and showed a history of a Communism and recognized governmental corruption. Because American poor health rankings are the result of controllable factors (smoking, adult onset diabetes, obesity), Americans can improve their bottom quartile status more readily than Europeans whose ranking status is a function of history (Communism, civil conflicts) and poverty (Southeastern and Eastern nations). PMID:25037885

  8. Open orbifold Gromov-Witten invariants of [C^3/Z_n]: localization and mirror symmetry

    E-print Network

    Andrea Brini; Renzo Cavalieri

    2011-06-13

    We develop a mathematical framework for the computation of open orbifold Gromov-Witten invariants of [C^3/Z_n], and provide extensive checks with predictions from open string mirror symmetry. To this aim we set up a computation of open string invariants in the spirit of Katz-Liu, defining them by localization. The orbifold is viewed as an open chart of a global quotient of the resolved conifold, and the Lagrangian as the fixed locus of an appropriate anti-holomorphic involution. We consider two main applications of the formalism. After warming up with the simpler example of [C^3/Z_3], where we verify physical predictions of Bouchard, Klemm, Marino and Pasquetti, the main object of our study is the richer case of [C^3/Z_4], where two different choices are allowed for the Lagrangian. For one choice, we make numerical checks to confirm the B-model predictions; for the other, we prove a mirror theorem for orbifold disc invariants, match a large number of annulus invariants, and give mirror symmetry predictions for open string invariants of genus \\leq 2.

  9. Impact of cross-polarization isolation on polarimetric target decomposition and target detection

    NASA Astrophysics Data System (ADS)

    Xu, Feng; Wang, Haipeng; Jin, Ya-Qiu; Liu, Xiuqing; Wang, Robert; Deng, Yunkai

    2015-04-01

    Cross-polarization isolation is one of the key engineering parameters for a polarimetric radar system. Previous studies focused more on the calibration of cross-talk contamination. This paper presents a numerical evaluation of the requirement for cross-polarization isolation from the data users' perspective, i.e., the quantitative impact of polarization cross talk on polarimetric target decomposition and the associated applications such as classification and detection. Sensitivity analyses of several commonly used target decomposition parameters suggest that a theoretical lower bound of -32 dB isolation level is preferred to avoid any significant impact on these parameters. Our analyses with both simulated and real synthetic aperture radar (SAR) data show that a level of -25 dB would be acceptable for general terrain surface classification. This requirement is also true for man-made target detection application. Using simulated SAR images of man-made targets in natural environment, sensitivity analyses on two polarimetric detectors, Yang and Marino, both suggest that target detection performance would break down rapidly if isolation deteriorates from -25 dB to -20 dB.

  10. Feasibility study of a layer-oriented wavefront sensor for solar telescopes: comment.

    PubMed

    Kellerer, Aglaé

    2014-11-10

    The future generation of telescopes will be equipped with multi-conjugate adaptive-optics (MCAO) systems in order to obtain high angular resolution over large fields of view. MCAO comes in two flavors: star- and layer-oriented. Existing solar MCAO systems rely exclusively on the star-oriented approach. Earlier we suggested a method to implement the layer-oriented approach, and in view of recent concerns by Marino and Wöger [Appl. Opt.53, 685 (2014)10.1364/AO.53.000685APOPAI1559-128X], we now explain the proposed scheme in further detail. We note that in any layer-oriented system one sensor is conjugated to the pupil and the others are conjugated to higher altitudes. For the latter, not all the sensing surface is illuminated by the entire field of view. The successful implementation of nighttime layer-oriented systems shows that the field reduction is no crucial limitation. In the solar approach the field reduction is directly noticeable because it causes vignetting of the Shack-Hartmann subaperture images. It can be accounted for by a suitable adjustment of the algorithms to calculate the local wavefront slopes. We discuss a further concern related to the optical layout of a layer-oriented solar system. PMID:25402984

  11. The O3N2 and N2 abundance indicators revisited: improved calibrations based on CALIFA and T_{e}-based literature data

    NASA Astrophysics Data System (ADS)

    Marino, R. A.; Rosales-Ortega, F. F.; Sánchez, S. F.; Gil de Paz, A.; Vílchez, J.; CALIFA Team

    2015-05-01

    In Marino et al. (2013) we review the most widely used empirical oxygen calibrations, O3N2 and N2, by using new direct abundance measurements. This work is based on the most comprehensive compilation of both T_{e}-based and multiple strong-line (ONS-based) ionized-gas abundance measurements in external galaxies to date in terms of all statistical significance, quality, and coverage of the parameters space. Our dataset compiles the T_{e}-based abundances of 603 HII regions extracted from the literature but also includes new measurements from the CALIFA survey. Besides providing new and improved empirical calibrations for the gas abundance, we also present a comparison between our revisited calibrations with a total of 3423 additional CALIFA HII complexes with abundances derived using the ONS calibration. The O3N2 and N2 indicators can be empirically applied to derive oxygen abundances calibrations from either direct-abundance determinations with random errors of 0.18 dex and 0.16 dex, respectively, and they show shallower abundance dependencies and statistically significant offsets compared to the classical calibrations.

  12. Cerebellum: Development and Medulloblastoma

    PubMed Central

    Roussel, Martine F.; Hatten, Mary E.

    2011-01-01

    In the last 20 years, it has become clear that developmental genes and their regulators, noncoding RNAs including microRNAs and long-noncoding RNAs, within signaling pathways play a critical role in the pathogenesis of cancer. Many of these pathways were first identified in genetic screens in Drosophila and other lower organisms. Mammalian orthologs were subsequently identified and genes within the pathways cloned and found to regulate cell growth. The GENES and pathways expressed during embryonic development, including the Notch, Wnt/?-Catenin, TGF-?/BMP, Shh/Patched, and Hippo pathways are mutated, lost, or aberrantly regulated in a wide variety of human cancers, including skin, breast, blood, and brain cancers, including medulloblastoma. These biochemical pathways affect cell fate determination, axis formation, and patterning during development and regulate tissue homeostasis and regeneration in adults. Medulloblastoma, the most common malignant nervous system tumor in childhood, are thought to arise from disruptions in cerebellar development [reviewed by Marino, S. (2005). Medulloblastoma: Developmental mechanisms out of control. Trends Mol. Med. 11, 17–22]. Defining the extracellular cues and intracellular signaling pathways that control cerebellar neurogenesis, especially granule cell progenitor (GCP) proliferation and differentiation has been useful for developing models to unravel the mechanisms underlying medulloblastoma formation and growth. In this chapter, we will review the development of the cerebellar cortex, highlighting signaling pathways of potential relevance to tumorigenesis. PMID:21295689

  13. Marine hydrogeology: recent accomplishments and future opportunities

    NASA Astrophysics Data System (ADS)

    Fisher, A. T.

    2005-03-01

    Marine hydrogeology is a broad-ranging scientific discipline involving the exploration of fluid-rock interactions below the seafloor. Studies have been conducted at seafloor spreading centers, mid-plate locations, and in plate- and continental-margin environments. Although many seafloor locations are remote, there are aspects of marine systems that make them uniquely suited for hydrologic analysis. Newly developed tools and techniques, and the establishment of several multidisciplinary programs for oceanographic exploration, have helped to push marine hydrogeology forward over the last several decades. Most marine hydrogeologic work has focused on measurement or estimation of hydrogeologic properties within the shallow subsurface, but additional work has emphasized measurements of local and global fluxes, fluid source and sink terms, and quantitative links between hydrogeologic, chemical, tectonic, biological, and geophysical processes. In addition to summarizing selected results from a small number of case studies, this paper includes a description of several new experiments and programs that will provide outstanding opportunities to address fundamental hydrogeologic questions within the seafloor during the next 20-30 years. L'hydrogéologie marine est une large discipline scientifique impliquant l' exploration des interactions entre les fluides et les roches sous les fonds marins. Des études ont été menées dans les différents environnements sous-marins (zone abyssale, plaque océanique, marges continentales). Bien que de nombreux fonds marins soient connus, il existe des aspects des systèmes marins qui les rendent inadaptés à l'analyse hydrologique. De nouveaux outils et techniques, et la mise en oeuvre de nombreux programmes multidisciplinaires d'exploration océanographique, ont aidé à pousser en avant l'hydrogéologie marine ces dix dernières années. La plus part des études hydrogéologiques se sont concentrées jusqu'à présent sur la mesure ou l'estimation des propriétés à la sub-surface des fonds marins, et des travaux complémentaires ont mis en valeur les mesures de flux, local ou global, de termes « sources » et « pertes », et des liens quantitatifs entre l'hydrogéologie, la chimie, la tectonique, la biologie, et les processus géophysiques. Cet article vise à résumer des résultats sélectionnés parmi un petit nombre d'études, et à décrire plusieurs nouvelles expériences et programmes, qui sont autant d'opportunités pour répondre aux questions fondamentales relatives aux fonds marins, posées ces dernières 20-30 années. La hidrogeología marina es una disciplina científica de amplios alcances que involucra la exploración de interacciones fluido-roca por debajo del fondo del mar. Se han llevado a cabo estudios en centros de expansión del fondo del mar, lugares en medio de una placa, y en ambientes de placa y margen continental. Aunque muchos sitios en el fondo del mar son remotos, existen aspectos de estos sistemas marinos que los hacen particularmente adaptables para análisis hidrológico. Nuevas técnicas y herramientas desarrolladas, y el establecimiento de varios programas multidisciplinarios para exploración oceanográfica, han ayudado a impulsar la hidrogeología marina hacia delante durante las ultimas décadas. La mayor parte del trabajo hidrogeológico marino se ha enfocado en la medición o estimación de propiedades hidrogeológicas dentro del subsuelo superficial, pero trabajo adicionalha enfatizado mediciones de flujos globales y locales, términos de fuente y sumidero de fluidos, y vínculos cuantitativos entre procesos hidrogeológicos, químicos, tectónicos, biológicos y geofísicos. Además de resumir resultados seleccionados de un número pequeño de estudios de caso, este artículo incluye una descripción de varios programas y experimentos nuevos que aportarán oportunidades excepcionales para dirigir preguntas hidrogeológicas fundamentales dentro del fondo oceánico durante los siguientes 20-30 años.

  14. Vitamin D, Race, and Excessive Daytime Sleepiness

    PubMed Central

    McCarty, David E.; Reddy, Aronkumar; Keigley, Quinton; Kim, Paul Y.; Marino, Andrew A.

    2012-01-01

    Study Objectives: First, to determine whether serum vitamin D levels were correlated with excessive daytime sleepiness (EDS) in patients with or without vitamin D deficiency (VitDd). Second, to assess whether race affected the relation between vitamin D levels and EDS. Methods: Serum 25-hydroxyvitamin D (25OHD) was measured by immunoassay in a consecutive series of 81 sleep clinic patients who complained of sleep problems and nonspecific pain (25OHD < 20 ng/mL ' VitDd). Sleepiness was determined using the Epworth Sleepiness Scale score ([ESSs] ESSs ? 10 ' EDS). Correlations were assessed using Pearson r. Results: In patients without VitDd (25OHD ? 20 ng/mL), ESSs was inversely correlated with vitamin D concentration (r = 0.45, p < 0.05). The group consisted of 6% black patients, compared with 35% for the entire cohort. Among the patients who had VitDd (25OHD < 20 ng/mL), ESSs was directly correlated with 25OHD in black (r = 0.48, p < 0.05) but not white patients. In black patients, mean ESSs in patients with VitDd were higher and 25OHD levels were lower p < 0.05). Conclusions: The results suggested the novel possibility that VitDd-related disease has a yet-to-be-identified mechanistic role in the presentation of sleepiness, sleep disorders, or both. Further research is needed to clarify the mechanism(s) involved in producing the complex relationships noted. Commentary: A commentary on this article appears in this issue on page 699. Citation: McCarty DE; Reddy A; Keigley Q; Kim PY; Marino AA. Vitamin D, race, and excessive daytime sleepiness. J Clin Sleep Med 2012;8(6):693-697. PMID:23243403

  15. Effects of illegal harvest of eggs on the population decline of leatherback turtles in Las Baulas Marine National Park, Costa Rica.

    PubMed

    Tomillo, Pilar Santidrián; Saba, Vincent S; Piedra, Rotney; Paladino, Frank V; Spotila, James R

    2008-10-01

    Within 19 years the nesting population of leatherback turtles (Dermochelys coriacea) at Parque Nacional Marino Las Baulas declined from 1500 turtles nesting per year to about 100. We analyzed the effects of fishery bycatch and illegal harvesting (poaching) of eggs on this population. We modeled the population response to different levels of egg harvest (90, 75, 50, and 25%) and the effect of eradicating poaching at different times during the population decline. We compared effects of 90% poaching with those of 20% adult mortality because both of these processes were present in the population at Las Baulas. There was a stepwise decline in number of nesting turtles at all levels of egg harvest. Extirpation times for different levels of poaching ranged from 45 to 282 years. The nesting population declined more slowly and survived longer with 20% adult mortality (146 years) than it did with 90% poaching (45 years). Time that elapsed until poaching stopped determined the average population size at which the population stabilized, ranging from 90 to 420 nesting turtles. Our model predicted that saving clutches lost naturally would restore the population when adult mortality rates were low and would contribute more to population recovery when there were short remigration intervals between nesting seasons and a large proportion of natural loss of clutches. Because the model indicated that poaching was the most important cause of the leatherback decline at Las Baulas, protecting nests on the beach and protecting the beach from development are critical for survival of this population. Nevertheless, the model predicted that current high mortality rates of adults will prevent population recovery. Therefore, protection of the beach habitat and nests must be continued and fishery bycatch must be reduced to save this population. PMID:18637915

  16. Variación temporal de las constantes fundamentales

    NASA Astrophysics Data System (ADS)

    Landau, S. J.; Vucetich, H.

    La variación temporal de las constantes fundamentales es un problema que ha motivado numerosos trabajos teóricos y experimentales desde la hipótesis de los grandes números de Dirac en 1937. Entre los métodos experimentales y observacionales para establecer restricciones sobre la variación de las constantes fundamentes es importante mencionar: comparación entre relojes atómicos[1], métodos geofísicos[2][3], análisis de sistemas de absorción en quasares[4][5][6] y cotas provenientes de la nucleosíntesis primordial[7]. En un trabajo reciente[5], se reportó una significativa variación en la constante de estructura fina. Intentos de unificar las cuatro interacciones fundamentales dieron como resultado teorías con múltiples dimensiones como las teorías de Kaluza-Klein y teorías de supercuerdas. Estas teorías proporcionan un marco teórico natural para el estudio de la variación temporal de las constantes fundamentales. A su vez, un modelo sencillo para estudiar la variación de la constante de estructura fina, fue propuesto en [8], a partir de premisas muy generales como ser covarianza, invarianza de gauge, causalidad y invarianza ante reversiones temporales en el electromagnetismo. Diferentes versiones de las teorías antes mencionadas coinciden en predecir variaciones temporales de las constantes fundamentales pero difieren en la forma de esta variación[9][10]. De esta manera, las restricciones establecidas experimentalmente sobre la variación de las constantes fundamentales pueden ser una herramienta importante para testear estas diferentes teorías. En este trabajo, utilizamos las cotas provenientes de diversas técnicas experimentales, para testear si las mismas son consistentes con alguna de las teorías antes mencionadas. En particular, establecemos cotas sobre la variación de los parámentros libres de las diferentes teorías como por ejemplo el radio de las dimensiones extras en las teorías tipo Kaluza-Klein.

  17. 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 soluções detalhadas do projeto óptico-mecânico, bem como uma análise de flexões e desempenho em termos de qualidade de imagem.

  18. Experimental simulation of gravity currents in erodible bed

    NASA Astrophysics Data System (ADS)

    Bateman, A.; La Roca, M.; Medina, V.

    2009-04-01

    Gravity currents are commonly met in nature, when a flow of denser fluid moves into a less dense one. A typical example of a gravity current is given by the sea water which flows into the bottom of a river during the summer, in correspondence of the estuary, when the river's discharge attains low values. In this case, dangerous consequences can occur, because of the polluting of the aquifer caused by the salty water. Density currents also occurs in lakes and reservoirs, because of a change in temperature or because a flood, both can produce some environmental impacts that are of interest to the local water Agency of the different countries. Of particular relevance is also the interaction of the gravity current with the movement of the sediments from the bottom of the bed. The international state of the art is particularly concerned with experimental and numerical investigation on gravity currents on fixed and porous bed [1-2-3], while, to the authors' knowledge, the interaction of a gravity current with an erodible bed is still an open field of investigation. In this paper experiments concerning with the propagation of a gravity current over fixed and erodible bed are presented. The experiments, conducted at the laboratory of Hydraulics of the Universitat Politecnica de Catalunya (actually in the Prof. Bateman's blue room), were concerned with a transparent tank 2 m long, 0.2 m wide and 0.3 m deep, partly filled with salty water and partly with fresh water, up to a depth of 0.28 m. The salty water, whose density was in the range 1050Marino, P.F. Linden, Lock-release inertial gravity currents over a thick porous layer, The Journal of Fluid Mechanics, Vol. 503, 2004 [2] John E. Simpson. Gravity Currents [3] J.J. Monaghan, R.A.F. Cas, A.M. Kos, M. Hallworth, Gravity currents descending a ramp in a stratified tank, The Journal of Fluid Mechanics, Vol. 379, 1999

  19. Paleomagnetic Results On Clastic Turbidite Systems In Compressional Settings: Example From The Eocene Hecho Group (southern Pyrenees, Spain)

    NASA Astrophysics Data System (ADS)

    Oms, O.; Dinarès-Turell, J.; Remacha, E.

    The Hecho group clastic turbidites were deposited in the southpyrenean foreland basin during the Paleocene and Eocene. These turbidites have provided well-known strati- graphic and facies models, and can be considered as one of the most studied ancient turbidite models of the world. This is because of the quality and preservation of the sedimentary record (basin-wide lateral continuity of rock-bodies, physical correlation linking deep-sea with platform strata, clear interaction with tectonic structures etc.) However, the Hecho group has not been a target for paleomagnetic studies despite the overwhelming sedimentological knowledge (in fact, sediments from such sedimento- logical and tectonic settings have been largely overlooked in the magnetostratigraphic literature). Here we present the results from a 2200 m-thick section mostly located in the Aragón valley north of the Jaca village (Huesca province). Planktic forams and calcareous nannoplankton data place the section in the middle Eocene. The lower and middle part of the section is representative of the pure flysch stage of the basin evo- lution (in the appenninic sense) and is build up by deep clastic depositional systems including carbonate megabreccias. The upper part of the section involves the transi- tion to a molasse stage by the occurrence of channelized turbidites (known as Rapitán system) that further up evolve to prodelta and platform deposits (Larrés slope marls and Sabiñánigo sandstone formations, respectively). The paleomagnetic investigation is based on the study of about 280 samples from 80 sampling sites, including mea- surements of remanence, anisotropy of the magnetic susceptibility (AMS) and rock magnetic experiments. Our data shows that magnetization is carried out mainly by iron sulphides that define a section dominated by reversed polarities although normal polarity zones are found. Considering the biostratigraphic constraints we make a cor- relation to the standard polarity scale (GPTS) which brings all the data to a compatible solution and entails inferring rates of some tectosedimentary processes. In conclusion, paleomagnetic studies on clastic turbidites should not be neglected and may be an extremely useful tool in refining the geological knowledge of the deep clastic environ- ments.

  20. Sobre el estado evolutivo de ? Pictoris

    NASA Astrophysics Data System (ADS)

    Brunini, A.; Benvenuto, O. G.

    Desde el descubrimiento de fuertes excesos infrarrojos en ? Pictoris, esta estrella ha sido muy estudiada y es considerada candidata a poseer un sistema planetario propio. ? Pic está rodeada de un disco asimétrico de polvo que se observa de canto y que esta vacío a distancias <= 40 AU. Esto se considera una fuerte evidencia en favor de la presencia de (al menos) un planeta gigante. Recientemente se han observado líneas de material circunestelar que se han interpretado como consecuencia de la caída de objetos cometarios sobre esta estrella. Recientemente se ha utilizado la existencia del disco de polvo para atribuir una edad corta (pre - secuencia principal) a ?Pic. Sin embargo, la evaporación de estos cometas provee suficiente polvo como para explicar la presencia del disco observado sin necesidad de edades cortas. En este trabajo mostramos que la comparación entre la tasa de impactos cometarios estimada en el Sistema Solar para diferentes etapas de su evolución y los datos observados en ? Pic indica edades avanzadas para ? Pic. Esta estimación debe tomarse con cautela ya que depende de la estructura de los sistemas planetarios. Además mostramos que, desde el punto de vista de la evolución estelar y con las incertezas presentes en la luminosidad y la temperatura efectiva, existe un continuo de edades posible para ? Pic. Sin embargo, empleando los datos provenientes de los flujos cometarios encontramos que una edad prolongada es consistente con ambos tratamientos.

  1. Esquizofrenia y trastorno en el consumo de sustancias: prevalencia y characterísticas sociodemográficas en la población Latina

    PubMed Central

    Jiménez-Castro, Lorena; Raventós-Vorst, Henriette; Escamilla, Michael

    2012-01-01

    El interés por comprender la co-morbilidad de la esquizofrenia y el trastorno en el uso de sustancias, ha aumentado debido al incremento de este diagnóstico, a los efectos negativos observados en el sujeto y a los costos en los servicios de salud. Este trastorno dual puede tener efectos dramáticos en el curso clínico del trastorno psicótico tales como: mayores recaídas, re-hospitalizaciones, síntomas más severos, no adherencia al tratamiento antipsicótico, cambios marcados del humor, aumento en el grado de hostilidad e ideación suicida, así como alteraciones en otras áreas del funcionamiento incluyendo violencia, victimización, indigencia y problemas legales. La literatura proveniente en particular de Estados Unidos y Europa sugiere que el rango de prevalencia para este diagnóstico puede oscilar entre el 10% hasta el 70%. En este estudio, revisamos la prevalencia del diagnóstico dual de esquizofrenia y trastorno en el uso sustancias, así como sus características sociodemográficas, con base en la literatura disponible alrededor del mundo dando énfasis en la poblacion latina. A pesar de que este diagnóstico es ampliamente aceptado, se conoce poco sobre su prevalencia en la población latina, sobre los factores ambientales, demográficos, clínicos y otras características de estos individuos. Un mejor conocimiento sobre este diagnóstico permitiría mejorar los métodos para la detección y adecuada valoración del trastorno en el uso de sustancias en personas con trastornos metales severos como la esquizofrenia. PMID:21404151

  2. Aceptabilidad del diagnóstico rápido casero para HIV entre hombres gay y otros hombres que tienen sexo con hombres (G&HSH) de la Ciudad de Buenos Aires

    PubMed Central

    Balán, Iván C.; Carballo-Diéguez, Alex; Marone, Rubén O.; Pando, María A.; Barreda, Victoria; Ávila, María M.

    2011-01-01

    Resumen El uso del diagnóstico rápido para HIV en Argentina, así como otros países de Latinoamérica, ha sido limitado hasta el momento. Este trabajo reporta los resultados provenientes de un estudio cualitativo realizado entre hombres gays y otros hombres que tienen sexo con hombres (G&HSH) de la Ciudad de Buenos Aires, Argentina. El objetivo principal del mismo fue conocer las ventajas y desventajas que los hombres G&HSH perciben en relación al diagnóstico rápido casero para HIV. Se realizaron ocho grupos focales con 73 participantes en los cuales se discutió acerca de las ventajas y desventajas del uso de los diagnósticos rápidos. Las respuestas fueron codificadas utilizando un programa para análisis de datos cualitativos (NVivo) y analizadas temáticamente. Los participantes describieron numerosas ventajas sobre el uso del diagnóstico rápido casero, aunque algunos reportaron importantes preocupaciones dentro de las cuales se destaca la posibilidad de impulsos suicidas si alguien recibe un resultado positivo estando solo. En términos generales se observó una gran aceptabilidad para el uso del diagnóstico rápido si el mismo es realizado por personal de salud en lugares acondicionados para este fin. PMID:25284951

  3. Helicity, geostrophic balance and mixing in rotating stratified turbulence: a multi-scale problem

    NASA Astrophysics Data System (ADS)

    Pouquet, A.; Marino, R.; Mininni, P.; Rorai, C.; Rosenberg, D. L.

    2012-12-01

    Helicity, geostrophic balance and mixing in rotating stratified turbulence: a multi-scale problem A. Pouquet, R. Marino, P. D. Mininni, C. Rorai & D. Rosenberg, NCAR Interactions between winds and waves have important roles in planetary and oceanic boundary layers, affecting momentum, heat and CO2 transport. Within the Abyssal Southern Ocean at Mid latitude, this may result in a mixed layer which is too shallow in climate models thereby affecting the overall evolution because of poor handling of wave breaking as in Kelvin-Helmoltz instabilities: gravity waves couple nonlinearly on slow time scales and undergo steepening through resonant interactions, or due to the presence of shear. In the oceans, sub-mesoscale frontogenesis and significant departure from quasi-geostrophy can be seen as turbulence intensifies. The ensuing anomalous vertical dispersion may not be simply modeled by a random walk, due to intermittent structures, wave propagation and to their interactions. Conversely, the energy and seeds required for such intermittent events to occur, say in the stable planetary boundary layer, may come from the wave field that is perturbed, or from winds and the effect of topography. Under the assumption of stationarity, weak nonlinearities, dissipation and forcing, one obtains large-scale geostrophic balance linking pressure gradient, gravity and Coriolis force. The role of helicity (velocity-vorticity correlations) has not received as much attention, outside the realm of astrophysics when considering the growth of large-scale magnetic fields. However, it is measured routinely in the atmosphere in order to gauge the likelihood of supercell convective storms to strengthen, and it may be a factor to consider in the formation of hurricanes. In this context, we examine the transition from a wave-dominated regime to an isotropic small-scale turbulent one in rotating flows with helical forcing. Using a direct numerical simulation (DNS) on a 3072^3 grid with Rossby and Reynolds numbers of 0.07 and 27000, one can resolve both the Zeman scale at which the inertial and eddy turn-over times equalize, and the dissipation scale. We show that fully helical vertical columns dominate at intermediate scales, presumably self-similar and shrouded by a sea of small-scale vortex filaments as in Kolmogorov turbulence. Helicity has a profound effect on the structures of the flow, and a previously developed model that includes a helical component in its eddy viscosity and eddy noise shows a measurable improvement. Indeed, if dimensionless parameters for inertial and gravity waves are reachable numerically, the Reynolds number is too low in DNS for geophysics unless one uses parametrizations of small scale interactions. For spin-down stably-stratified flows, energy and helicity undergo a substantially slower decay than in the unstratified case, and a type of large-scale cyclostrophic balance is invoked to explain this behavior. The decay rate is similar to that occurring in the unstratified rotating case, as modeled by taking into account the quasi-conservation of helicity. We finally mention helicity production when rotation and stratification are both combined. In conclusion, much remains to be done, e.g. examining transport properties of rotating stratified turbulence, such as the effect of helicity on mixing in geophysical flows that can be studied with high-performance computing allowing multi-scale interactions and intermittency to develop.

  4. Tanque Loma, a new late-Pleistocene megafaunal tar seep locality from southwest Ecuador

    NASA Astrophysics Data System (ADS)

    Lindsey, Emily L.; Lopez R., Eric X.

    2015-01-01

    Fossil deposits in the petroleum-rich sediments of the Santa Elena Peninsula in southwestern Ecuador contain some of the largest and best-preserved assemblages of Pleistocene megafaunal remains known from the neotropics, and thus represent an opportunity to greatly expand our knowledge of Pleistocene paleoecology and the extinction of Quaternary megafauna in this region. This paper reports data from excavations at Tanque Loma, a late-Pleistocene locality on the Santa Elena Peninsula that preserves a dense assemblage of megafaunal remains in hydrocarbon-saturated sediments along with microfaunal and paleobotanical material. The megafauna bones are concentrated in and just above a ?0.5 m thick asphaltic layer, but occur sparsely and with poorer preservation up to 1 m above this deposit. Several meters of presumed-Holocene sediments overlying the megafauna-bearing strata are rich in bones of microvertebrates including birds, squamates, and rodents. These are interpreted as raptor assemblages. While over 1000 megafaunal bones have been identified from the Pleistocene strata at Tanque Loma, more than 85% of these remains pertain to a single species, the giant ground sloth Eremotherium laurillardi. Only five other megafauna taxa have been identified from this site, including Glossotherium cf. tropicorum, Holmesina occidentalis, cf. Notiomastodon platensis, Equus (Amerhippus) c.f. santaeelenae, and a cervid tentatively assigned to cf. Odocoileus salinae based on body size and geography. No carnivores have yet been identified from Tanque Loma, and microvertebrate remains are extremely rare in the Pleistocene deposits, although terrestrial snail shells and fragmented remains of marine invertebrates are occasionally encountered. Accelerator Mass Spectrometry radiocarbon dates on Eremotherium and cf. Notiomaston bones from within and just above the asphaltic layer yielded dates of ?17,000 - 23,500 radiocarbon years BP. Taken together, the taxonomic composition, taphonomy, geologic context, and sedimentology of Tanque Loma suggest that this site represents a bone bed assemblage in a heavily vegetated, low-energy riparian environment with secondary infiltration of asphalt that helped to preserve the bones. The predominance of Eremotherium fossils at this site indicate that it may have been an area where these animals congregated, suggesting possible gregarious behavior in this taxon. The radiocarbon dates so far obtained on extinct taxa at Tanque Loma are consistent with a model positing earlier extinctions of megafauna in tropical South America than of related taxa further south on the continent, although this pattern may be an artifact of low sampling in the region. Aunque más de 1.000 huesos de megafauna han sido identificados en los estratos del Pleistoceno en Tanque Loma, más del 85% de esos mismos pertenecen a una sola especie, el perezoso gigante Eremotherium laurillardi. Sin embargo, otros cinco taxones de megafauna han sido recuperados de este sitio, los cuales son: Glossotherium cf. G. tropicorum, Holmesina occidentalis, cf. Notiomastodon platensis, Equus (Amerhippus) c.f. santaelenae y un cérvido identificado tentativamente en base a tamaño y geografía como cf. Odocoileus salinae. Ningún carnívoro ha sido identificado aún en Tanque Loma, y los restos de microvertebrados son muy raros en los estratos del Pleistoceno, aunque las conchas de caracol terrestre y los restos fragmentados de invertebrados marinos son encontrados ocasionalmente dentro de esas capas. Los fechados de radiocarbono por espectrómetro de acelerador de masas (AMS) en huesos de Eremotherium y cf. Notiomastodon de la capa de asfalto y por encima de esta resultaron en ?17,000-23,500 años radiocarbónicos AP. En conjunto, la tafonomía, la composición taxonómica, el contexto geológico, y la sedimentolgía del sitio Tanque Loma surgieren que esta localidad representa un yacimiento depositado en un ambiente ribereño con bajo flujo y vegetación densa, con infiltraciones secundarias de asfalto lo que ayudó a preservar los huesos. El predomin

  5. Chlorine-36 in groundwater of the United States: empirical data

    NASA Astrophysics Data System (ADS)

    Davis, Stanley; Moysey, Stephen; Cecil, DeWayne; Zreda, Marek

    2002-11-01

    Natural production of the radionuclide chlorine-36 (36Cl) has provided a valuable tracer for groundwater studies. The nuclear industry, especially the testing of thermonuclear weapons, has also produced large amounts of 36Cl that can be detected in many samples of groundwater. In order to be most useful in hydrologic studies, the natural production prior to 1952 should be distinguished from more recent artificial sources. The object of this study was to reconstruct the probable preanthropogenic levels of 36Cl in groundwater in the United States. Although significant local variations exist, they are superimposed on a broad regional pattern of 36Cl/Cl ratios in the United States. Owing to the influence of atmospherically transported ocean salt, natural ratios of 36Cl/total Cl are lowest near the coast and increase to a maximum in the central Rocky Mountains of the United States. Résumé. La production naturelle du radionucléide chlore-36 (36Cl) fournit un intéressant traceur pour l'étude des eaux souterraines. L'industrie nucléaire, en particulier les essais de bombes thermonucléaires, a également produit de grandes quantités de 36Cl qui a pu être détecté dans de nombreux échantillons d'eau souterraine. Afin d'en améliorer l'usage dans les études hydrologiques, la production naturelle avant 1952 doit être distinguée des sources artificielles plus récentes. L'objectif de cette étude a été la reconstruction des niveaux probables de 36Cl dans les eaux souterraines des États-Unis, avant la production anthropique du 36Cl. Bien qu'il existe des variations locales significatives, elles se surimposent à un canevas régional de rapports 36Cl/Cl dans les États-Unis. Du fait de l'influence du sel océanique transporté dans l'atmosphère, les rapports naturels de 36Cl/Cl total sont plus faibles près de la côte et augmentent jusqu'à un maximum dans les Montagnes Rocheuses centrales des États-Unis. Resumen. La producción natural del radionucleido cloro-36 (36Cl) representa un trazador valioso para estudios de hidrogeología. La industria nuclear, sobretodo por los ensayos con armas nucleares, también ha producido grandes cantidades de 36Cl que pueden ser detectadas en muchas muestras de aguas subterráneas. Para que sean lo más útiles posible en estudios hidrológicos, la producción natural anterior al año 1952 debe ser diferenciada de la procedente de fuentes artificiales más recientes. El objeto de este estudio era la reconstrucción de los niveles probables de 36Cl en las aguas subterráneas de los Estados Unidos de América con anterioridad a las aportaciones de origen antrópico. Aunque existen variaciones locales significativas, éstas se superponen a un extenso patrón regional de la relación 36Cl/Cl en el país. Debido a la influencia de la sal transportada en los aerosoles marinos, las proporciones naturales de 36Cl/Cl total son menores cerca de la costa, y alcanzan su máximo en el centro de las Montañas Rocosas.

  6. 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.

  7. A preliminary inventory of the catfishes of the lower Rio Nhamundá, Brazil (Ostariophysi, Siluriformes).

    PubMed

    Collins, Rupert A; Duarte Ribeiro, Emanuell; Nogueira Machado, Valéria; Hrbek, Tomas; Farias, Izeni Pires

    2015-01-01

    The Rio Nhamundá is a poorly-known clearwater river draining the southern Guiana Shield of Brazil. In this study we report the findings of a preliminary ichthyological survey, focusing on catfishes (Siluriformes). We identify a total of 36 species (31 genera, seven families) from the Nhamundá, including 11 species already recorded from the river. Overall, our survey results show that even rapid surveys can provide important information on Amazon fish biodiversity, suggesting potential new species, providing range extensions for nominal species, and additionally highlighting taxa in need of taxonomic revision and genetic study. As well as the traditional forms of data collected on biodiversity surveys (i.e. preserved specimen vouchers), our study also provides "new" types of data in the form of DNA barcodes and images of fishes exhibiting colouration in life, information that will be invaluable in future work addressing difficult groups. O Rio Nhamundá é um rio de água clara, pouco conhecido, que drena parte do Escudo das Guianas em território brasileiro. Nesse estudo, nós reportamos os resultados de um levantamento ictiofaunístico preliminar dessa área, tendo como foco os bagres (Siluriformes). Nós identificamos um total de 36 espécies (31 gêneros, sete famílias) provenientes de nossa coleta, e adicionamos 11 espécies já conhecidas para o rio. De maneira geral, os resultados de nossa pesquisa mostram que mesmo levantamentos rápidos podem gerar informações importantes sobre a biodiversidade de peixes amazônicos, sugerindo potenciais espécies novas, ampliando a área de distribuição de espécies, além de apontar a necessidade de revisões taxonômicas e estudos genéticos para alguns taxa. Para além das formas tradicionais de dados coletados em pesquisas de biodiversidade (i.e. espécimes preservados), nosso estudo fornece "novas" formas de dados, como DNA barcodes e imagens com o padrão de coloração dos espécimes vivos, informações essas que serão de valor inestimável para futuros estudos que abordem grupos taxonômicos difíceis. PMID:25977611

  8. Geologically based model of heterogeneous hydraulic conductivity in an alluvial setting

    NASA Astrophysics Data System (ADS)

    Fogg, Graham E.; Noyes, Charles D.; Carle, Steven F.

    Information on sediment texture and spatial continuity are inherent to sedimentary depositional facies descriptions, which are therefore potentially good predictors of spatially varying hydraulic conductivity (K). Analysis of complex alluvial heterogeneity in Livermore Valley, California, USA, using relatively abundant core descriptions and field pumping-test data, demonstrates a depositional-facies approach to characterization of subsurface heterogeneity. Conventional textural classifications of the core show a poor correlation with K; however, further refinement of the textural classifications into channel, levee, debris-flow, and flood-plain depositional facies reveals a systematic framework for spatial modeling of K. This geologic framework shows that most of the system is composed of very low-K flood-plain materials, and that the K measurements predominantly represent the other, higher-K facies. Joint interpretation of both the K and geologic data shows that spatial distribution of K in this system could not be adequately modeled without geologic data and analysis. Furthermore, it appears that K should not be assumed to be log-normally distributed, except perhaps within each facies. Markov chain modeling of transition probability, representing spatial correlation within and among the facies, captures the relevant geologic features while highlighting a new approach for statistical characterization of hydrofacies spatial variability. The presence of fining-upward facies sequences, cross correlation between facies, as well as other geologic attributes captured by the Markov chains provoke questions about the suitability of conventional geostatistical approaches based on variograms or covariances for modeling geologic heterogeneity. Résumé Les informations sur la texture des sédiments et leur continuité spatiale font partie des descriptions de faciès sédimentaires de dépôt. Par conséquent, ces descriptions sont d'excellents prédicteurs potentiels des variations spatiales de la conductivité hydraulique (K). L'analyse de l'hétérogénéité des alluvions complexes de la vallée de Livermore (Californie, États-Unis), sur la base de descriptions de carottes relativement nombreuses et de données d'essais de pompage, montre que l'hétérogénéité souterraine peut être caractérisée par une approche des faciès de dépôt. Des classifications conventionnelles de la texture de la carotte montrent une corrélation médiocre avec K; toutefois, une amélioration ultérieure des classifications de texture en faciès de dépôt de chenal, de levée d'inondation, de coulée boueuse et de plaine d'inondation a fourni un cadre systématique pour une modélisation spatiale de K. Ce cadre géologique montre que le système est composé pour l'essentiel par des matériaux d'inondation à très faible perméabilité ceci laisse envisager qu'on ne peut pas supposer que K suit une distribution log-normal, sauf peut-être à l'intérieur de chaque faciès. Une modélisation par chaîne de Markov de la probabilité de passage, représentant la corrélation spatiale dans les faciès et entre eux, prend en compte les faits géologiques intéressants tout en fournissant une approche nouvelle pour une caractérisation statistique de la variabilité spatiale des faciès. La présence de séquences à faciès tronqués vers le haut, d'une corrélation croisée entre faciès, ainsi que d'autres caractères géologiques pris en compte par les chaînes de Markov conduisent à se poser des questions sur l'adéquation des approches géostatistiques conventionnelles utilisant les variogrammes ou les covariances pour modéliser l'hétérogénéité géologique. Resumen La información respecto a la textura de los sedimentos y la continuidad espacial es inherente a las descripciones de las facies deposicionales sedimentarias. De este modo, estas descripciones se convierten en excelentes predictores potenciales de las variaciones espaciales de la conductividad hidráulica (K). El análisis de la heterogeneidad en un aluvial en el Valle de L

  9. Courtship behavior of different wild strains of Ceratitis Capitata (Diptera: Tephritidae)

    SciTech Connect

    Briceno, D. [Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria (Costa Rica); Eberhard, W. [Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria and Smithsonian Tropical Research Institute (Costa Rica); Vilardi, J. [Dpto. de Ciencias Biologicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires (Argentina); Cayol, J.-P. [Technical Cooperation Division, IAEA, Wagramerstrasse 5, P.O. Box 100 A-1400, Vienna (Austria); Shelly, T. [A. C. , D. , E. USDA/APHIS/CPHST, 41-650 Ahiki St. Waimanalo, HI 96795 (United States)

    2007-03-15

    This study documents differences in the courtship behavior of wild strains of Ceratitis capitata (Wiedemann) from Madeira (Portugal), Hawaii (U.S.A.), Costa Rica, and Patagonia (Argentina). Some traits showed large variations and others substantial overlaps. The angle at which the male faced toward the female at the moment of transition from continuous wing vibration and intermittent buzzing changed very little during the course of courtship in all strains, but males from Madeira tended to face more directly toward the female than other males. Females tended to look more, and more directly, toward the males as courtship progressed in all strains. The distance between male and female tended to decrease as courtship proceeded in all strains, but the distances at which males initiated continuous vibration, intermittent buzzing, and jumped onto the female were relatively less variable between strains, except for the strain from Costa Rica. Flies of Madeira courted for longer and the male moved his head and buzzed his wings longer than the other strains. (author) [Spanish] Este estudio documenta diferencias en el comportamiento de cortejo de cepas silvestres de Ceratitis capitata (Wied.) provenientes de Madeira (Portugal), Hawaii (Estados Unidos de Norte America), Costa Rica y Patagonia (Argentina). Algunas caracteristicas mostraron grandes variaciones y traslape substancial. Los angulos a los cuales los machos miraron hacia las hembras cambiaron muy poco en el momento de la transicion de la vibracion continua al zumbido intermitente durante el curso del cortejo en todo las cepas, pero los machos de Madeira tendieron a enfrentar mas directamente a la hembra que otros machos. Los angulos de las hembras disminuyeron claramente durante el cortejo en todas las cepas. La distancia entre el macho y la hembra tendio a disminuir conforme el cortejo continuaba en todas las cepas, pero las distancias a las cuales los machos iniciaron la vibracion continua, el zumbido intermitente, y el salto sobre la hembra eran relativamente menos variables entre cepas excepto la cepa de Costa Rica. Moscas de Madeira cortejaron mas tiempo y el macho moviosu cabeza y zumbaba sus alas mas prolongadamente que las otras cepas. (author)

  10. Raman spectroscopy of detrital garnet from the (U)HP terrane of eastern Papua New Guinea

    NASA Astrophysics Data System (ADS)

    Andò, Sergio; Baldwin, Suzanne L.; Fitzgerald, Paul G.; Malusà, Marco G.; Aliatis, Irene; Vezzoli, Giovanni; Garzanti, Eduardo

    2013-04-01

    Garnet is one of the most widespread heavy minerals in sediments derived from orogenic systems. Its chemical composition varies systematically with temperature and pressure conditions, and thus provides information on the metamorphic evolution of source areas that is crucial in tectonic and geodynamic reconstructions. Garnet is easily identified in mineral grain mounts and is relatively stable during burial diagenesis. Raman spectroscopy allows rapid determination of garnet compositions in grain mounts or thin sections of sand and sandstone samples, and can be used to assess their density and chemical composition quite accurately ("MIRAGEM" method of Bersani et al., 2009; Andò et al., 2009). In the D'Entrecastreaux Islands of southeastern Papua New Guinea, the world's youngest (U)HP rocks are exposed. There, mafic rocks and their felsic host gneisses were metamorphosed under eclogite facies conditions from late Miocene to Pliocene, before being exhumed from depths of ~90 km (Baldwin et al., 2004, 2008). The eclogite preserves a peak assemblage of garnet, omphacite, rutile, phengite and Si02 (Hill and Baldwin, 1993). A coesite-eclogite has been found in one small island outcrop. In order to sample garnet populations representative of a larger geographical area, we sampled and studied a heavy-mineral-dominated placer sand (HMC 80) from a beach from SE Goodenough Island. Garnet grains in beach sand are associated with blue-green to subordinately green-brown amphibole and minor epidote, omphacitic clinopyroxene, titanite, apatite and rutile. The subordinate low-density fraction is feldspatho-quartzose with high-rank metamorphic rock fragments and biotite (Q62 F35 Lm2; MI 360). Detrital garnets are mostly classified as almandine with relatively high Mg and Ca and lacking Mn, typical of the eclogite facies (Win et al., 2007; type Ci garnets of Mange and Morton 2007; Andò et al., 2013). In well-described stratigraphic sequences within syn-and post-tectonic basins adjacent to orogenic systems, Raman-assisted heavy-mineral studies allow us to detect the first arrival of eclogitic garnet, and thus to assess the minimum age of exhumation and final unroofing of high-pressure rocks (Malusà et al., 2011; Malusà and Garzanti, 2012). However, in the (U)HP terrane of southeastern Papua New Guinea, sediments derived from the actively exhuming D'Entrecasteaux Island core complexes are still being deposited offshore, are rarely preserved sub-aerially, and as such stratigraphic constraints are limited. Raman analysis of detrital garnets from placer sand thus provides invaluable constraints to compare with mineral assemblages preserved in exhumed eclogites. REFERENCES Andò S., Bersani D., Vignola P., Garzanti E. 2009. Raman spectroscopy as an effective tool for high-resolution heavy-mineral analysis: Examples from major Himalayan and Alpine fluvio-deltaic systems. Spectrochim. Acta A73:450-455. Andò S., Morton A., Garzanti E. 2013. Metamorphic grade of source rocks revealed by chemical fingerprints of detrital amphibole and garnet. Geol. Soc. London Spec. Publ. Sediment Provenance Studies in Hydrocarbon Exploration & Production. Baldwin S.L., Monteleone B., Webb L.E., Fitzgerald P.G., Grove M., Hill E.J. 2004. Pliocene eclogite exhumation at plate tectonic rates in eastern Papua New Guinea. Nature 431:263-267. Baldwin S.L., Webb L.E., Monteleone B.D. 2008. Late Miocene coesite-eclogite exhumed in the Woodlark Rift. Geology 36:735-738 Bersani D., Andò S., Vignola P., Moltifiori G., Marino I.G., Lottici P.P., Diella V., 2009. Micro-Raman spectroscopy as a routine tool for garnet analysis. Spectrochim. Acta A73:484-491. Hill E.J., Baldwin S.L. 1993. Exhumation of high-pressure metamorphic rocks during crustal extension in the D'Entrecasteaux region, Papua New Guinea. J. Metam. Geol. 11:261-277. Malusà M.G., Faccenna C., Garzanti E., Polino R. 2011. Divergence in subduction zones and exhumation of high-pressure rocks (Eocene Western Alps). Earth Pl. Sci. Lett. 310:21-32. Malusà M.G., Garzanti E. 2012. Actualistic snapshot o

  11. Accuracy of CFC groundwater dating in a crystalline bedrock aquifer: Data from a site in southern Sweden

    NASA Astrophysics Data System (ADS)

    Bockgård, Niclas; Rodhe, Allan; Olsson, K. A.

    The concentrations of chlorofluorocarbons (CFC-11, CFC-12, and CFC-113) and tritium were determined in groundwater in fractured crystalline bedrock at Finnsjön, Sweden. The specific goal was to investigate the accuracy of CFC dating in such an environment, taking potential degradation and mixing of water into consideration. The water was sampled to a depth of 42 m in three boreholes along an 800-m transect, from a recharge area to a local discharge area. The CFC-113 concentration was at the detection limit in most samples. The apparent recharge date obtained from CFC-11 was earlier than from CFC-12 for all samples, with a difference of over 20 years for some samples. The difference was probably caused by degradation of CFC-11. The CFC-12 dating of the samples ranged from before 1945 to 1975, with the exception of a sample from the water table, which had a present-day concentration. Conclusions about flow paths or groundwater velocity could not be drawn from the CFCs. The comparison between CFC-12 and tritium concentrations showed that most samples could be unmixed or mixtures of waters with different ages, and the binary mixtures that matched the measured concentrations were determined. The mixing model approach can be extended with additional tracers. Précision de la datation au CFC dans un aquifère rocheux-fracturé: données d'un site du sud de la Suède. Les concentrations en chlorofluorocarbones (CFC-11, CFC-12, CFC-113) et entritium ont été déterminées dans l'eau souterraine d'un massif fracturé à Finnsjön en Suède. Le but de cette étude est de mieux cerner la précision de la méthode de datation au CFC dans ce type d'environnement hydrogéologique, tout en considérant d'éventuels phénomènes de dégradation et de mélange d'eaux. L'eau a été échantillonnée à une profondeur de 42 mètres dans trois forages alignés sur 800 mètres entre une zone de recharge et une zone de déversement. Les concentrations en CFC-113 sont dans la plupart des échantillons à la limite de détection. Pour tous les échantillons, la date de la recharge établie avec le CFC-11 est antérieure à la date établie avec le CFC-12. La différence entre les deux dates peut dépasser 20 ans et s'explique-probablement-par la dégradation du CFC-11. Les dates de recharge de la nappe mesurées au CFC-12 sont comprises entre 1945 et 1975, excepté pour un échantillon qui possède une concentration actuelle. Il n'est pas possible de tirer des conclusions concernant la direction des écoulements et la vitesse de l'eau souterraine. La comparaison entre CFC-12 et tritium montre que des échantillons pourraient être soit le résultat du mélange d'eaux d'âges différents, soit des échantillons non-mélangés. Dans le cas d'un mélange binaire, les rapports du mélange composant la concentration mesurée sont déterminés. L'approche par modèle de mélange peut être étendue à des traceurs additionnels. Precisión en la datación de aguas subterráneas utilizando CFC en un acuífero de rocas cristalinas: datos provenientes de un sitio al sur de Suecia. Se determinaron las concentraciones de clorofluorucarbonos (CFC-11, CFC-12, y CFC-113) y de tritio en aguas subterráneas alojadas en rocas cristalinas fracturadas de Finnsjön, Suecia. El objetivo específico consistió en investigar la precisión de la datación de aguas subterráneas con CFC en este tipo de ambiente, tomando en consideración la degradación potencial y la mezcla de agua. Las muestras de agua se tomaron a una profundidad de 42 m en tres pozos ubicados a lo largo de una línea de 800 m transversal a una zona de recarga y de zona de descarga local. En la mayoría de las muestras se encontró que la concentración de CFC-113 estuvo en el límite de detección. La edad que se estimó en todas las muestras para la recarga aparente en base a CFC-11 fue más joven que la edad proveniente de CFC-12, con una diferencia de más de 20 años para algunas muestras. Esta diferencia fue causada probablemente por la degradación del CFC-11. La datación CFC-12 de las muest