Science.gov

Sample records for alta frecuencia oscilatoria

  1. 77 FR 29633 - Alta Wind VII, LLC, Alta Wind IX, LLC, Alta Wind X, LLC, Alta Wind XI, LLC, Alta Wind XII, LLC...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-18

    ... Wind VII, LLC, Alta Wind IX, LLC, Alta Wind X, LLC, Alta Wind XI, LLC, Alta Wind XII, LLC, Alta Wind XIII, LLC, Alta Wind XIV, LLC, Alta Wind XV, LLC, Alta Windpower Development, LLC, TGP Development... 385.207, Alta Wind VII, LLC, Alta Wind IX, LLC, Alta Wind X, LLC, Alta Wind XI, LLC, Alta Wind...

  2. 75 FR 23263 - Alta Wind I, LLC; Alta Wind II, LLC; Alta Wind III, LLC; Alta Wind IV, LLC; Alta Wind V, LLC...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-03

    ... Energy Regulatory Commission Alta Wind I, LLC; Alta Wind II, LLC; Alta Wind III, LLC; Alta Wind IV, LLC; Alta Wind V, LLC; Alta Wind VI, LLC; Alta Wind VII, LLC; Alta Wind VIII, LLC; Alta Windpower... Federal Energy Regulatory Commission (Commission), 18 CFR 285.207 (2009), Alta Wind I, LLC, Alta Wind...

  3. Nuevos sistemas de frecuencia intermedia para el IAR

    NASA Astrophysics Data System (ADS)

    Olalde, J. C.; Perilli, D.; Larrarte, J. J.

    Se presenta el diagrama en bloques de los nuevos sistemas de Frecuencia Intermedia para los dos radiómetros instalados en el IAR. Entre las características más importantes del sistema podemos mencionar la posibilidad de conectar cualquiera de las dos antenas a los ``backend" disponibles: analizador espectral de alta resolución (META II) de 0,05 Hz, autocorrelador de 1008 canales y contínuo. Se incorporan al sistema nuevos sintetizadores de frecuencia implementados con PLL y la moderna técnica de síntesis digital directa. Por último, el conjunto del sistema es susceptible de ser configurado por las computadoras de adquisición de datos, supervisadas por otra, que entrega el estado de funcionamiento actual y evita la selección de configuraciones incorrectas por parte del usuario.

  4. Solar Innovator | Alta Devices

    ScienceCinema

    Mattos, Laila; Le, Minh

    2016-07-12

    Selected to participate in the Energy Department's SunShot Initiative, Alta Devices produces solar cells that convert sunlight into electricity at world record-breaking levels of efficiency. Through its innovative solar technology Alta is helping bring down the cost of solar. Learn more about the Energy Department's efforts to advance solar technology at energy.gov/solar .

  5. Solar Innovator | Alta Devices

    SciTech Connect

    Mattos, Laila; Le, Minh

    2012-01-01

    Selected to participate in the Energy Department's SunShot Initiative, Alta Devices produces solar cells that convert sunlight into electricity at world record-breaking levels of efficiency. Through its innovative solar technology Alta is helping bring down the cost of solar. Learn more about the Energy Department's efforts to advance solar technology at energy.gov/solar .

  6. Getting the Most from Alta Vista.

    ERIC Educational Resources Information Center

    Cunningham, Jim

    1996-01-01

    Discusses Alta Vista, one of the most heavily used search engines on the World Wide Web. Describes the following search term manipulations: wildcard and truncation, adjacency, Boolean, and capitalization. Notes problems due to the Internet's constant state of transition and discusses advanced search mode. (AEF)

  7. Getting the Most from Alta Vista.

    ERIC Educational Resources Information Center

    Cunningham, Jim

    1996-01-01

    Discusses Alta Vista, one of the most heavily used search engines on the World Wide Web. Describes the following search term manipulations: wildcard and truncation, adjacency, Boolean, and capitalization. Notes problems due to the Internet's constant state of transition and discusses advanced search mode. (AEF)

  8. World Wide Web Search Engines: AltaVista and Yahoo.

    ERIC Educational Resources Information Center

    Machovec, George S., Ed.

    1996-01-01

    Examines the history, structure, and search capabilities of Internet search tools AltaVista and Yahoo. AltaVista provides relevance-ranked feedback on full-text searches. Yahoo indexes Web "citations" only but does organize information hierarchically into predefined categories. Yahoo has recently become a publicly held company and…

  9. Notes about Alta Vista in Chalchihuites, Zacatecas

    NASA Astrophysics Data System (ADS)

    Montero García, Ismael Arturo

    2016-11-01

    The Tropic of Cancer is a parallel located at the latitude of 23°26'16''. This imaginary line extends across northern Mexico from the southernmost point of the Baja California Peninsula, to the Gulf of Mexico, passing through the states of Baja California Sur, Sinaloa, Durango, Zacatecas, San Luis Potosí, Nuevo León and Tamaulipas. The Tropic of Cancer marks the northernmost position of the sun at its midday zenith, which takes place in the Summer solstice. On this day, the sun's rays hit the earth's surface vertically along the entire length of this latitude, which was supposed to be significant for the priest/astronomers of ancient times, who dedicated themselves to observing the apparent movements of the sun. It so happens that Alta Vista in Zacatecas, corresponds to the westernmost peak where this phenomenon can occur, although the date of the zenith's course differs depending on the latitude of each position and so various archaeoastronomical specialists stress how the ancient indigenous cultures, at least those dating from Mexico's Classical period, valued this finding in developing their calendars. On the other hand, the research contributes new elements for discussion because it presents a calendar of the horizon, based on of the highest peaks of the Sierra Prieta mountain range ranging from the archaeological sites of El Chapín, Cerro Pedregoso, to the excavations at El Picacho Pelón (peak El Pelón).

  10. The Alta schist, North Norway: unique rock with unique history

    NASA Astrophysics Data System (ADS)

    Heldal, Tom; Aasly, Kari; Meyer, Gurli

    2015-04-01

    Near the small town of Alta, northernmost Norway, are more than thousand small and large schist quarries, some of them dating back to the 1850's. It was the need for roofing material on a local church and a hospital that triggered the production. Since then, the Alta schist has been widely applied in Norway and abroad, known for its quality for roofing material and hard floor covering. The quality lies in the processes behind the formation of the schist. Emplacement of thrust nappes during the Caledonian mountain chain formation in the Silurian caused deformation and metamorphism of the rocks. The Alta schist is situated in one such nappe sheet, where arkosic sandstone where flattened and transformed into mylonite. This made fine mica layers along which the rock can be split, rythmically spaced and separated by quartz-dominated bands. The production of the Alta schist is still characterized by old craft traditions, reflecting a rich history and culture around the schist production.

  11. Finite Element Analysis of Patella Alta: A Patellofemoral Instability Model.

    PubMed

    Watson, Nicole A; Duchman, Kyle R; Grosland, Nicole M; Bollier, Matthew J

    2017-01-01

    This study aims to provide biomechanical data on the effect of patella height in the setting of medial patellofemoral ligament (MPFL) reconstruction using finite element analysis. The study will also examine patellofemoral joint biomechanics using variable femoral insertion sites for MPFL reconstruction. A previously validated finite element knee model was modified to study patella alta and baja by translating the patella a given distance to achieve each patella height ratio. Additionally, the models were modified to study various femoral insertion sites of the MPFL (anatomic, anterior, proximal, and distal) for each patella height model, resulting in 32 unique scenarios available for investigation. In the setting of patella alta, the patellofemoral contact area decreased, resulting in a subsequent increase in maximum patellofemoral contact pressures as compared to the scenarios with normal patellar height. Additionally, patella alta resulted in decreased lateral restraining forces in the native knee scenario as well as following MPFL reconstruction. Changing femoral insertion sites had a variable effect on patellofemoral contact pressures; however, distal and anterior femoral tunnel malpositioning in the setting of patella alta resulted in grossly elevated maximum patellofemoral contact pressures as compared to other scenarios. Patella alta after MPFL reconstruction results in decreased lateral restraining forces and patellofemoral contact area and increased maximum patellofemoral contact pressures. When the femoral MPFL tunnel is malpositioned anteriorly or distally on the femur, the maximum patellofemoral contact pressures increase with severity of patella alta. When evaluating patients with patellofemoral instability, it is important to recognize patella alta as a potential aggravating factor. Failure to address patella alta in the setting of MPFL femoral tunnel malposition may result in even further increases in patellofemoral contact pressures, making it

  12. Finite Element Analysis of Patella Alta: A Patellofemoral Instability Model

    PubMed Central

    Duchman, Kyle R.; Grosland, Nicole M.; Bollier, Matthew J.

    2017-01-01

    Abstract Background: This study aims to provide biomechanical data on the effect of patella height in the setting of medial patellofemoral ligament (MPFL) reconstruction using finite element analysis. The study will also examine patellofemoral joint biomechanics using variable femoral insertion sites for MPFL reconstruction. Methods: A previously validated finite element knee model was modified to study patella alta and baja by translating the patella a given distance to achieve each patella height ratio. Additionally, the models were modified to study various femoral insertion sites of the MPFL (anatomic, anterior, proximal, and distal) for each patella height model, resulting in 32 unique scenarios available for investigation. Results: In the setting of patella alta, the patellofemoral contact area decreased, resulting in a subsequent increase in maximum patellofemoral contact pressures as compared to the scenarios with normal patellar height. Additionally, patella alta resulted in decreased lateral restraining forces in the native knee scenario as well as following MPFL reconstruction. Changing femoral insertion sites had a variable effect on patellofemoral contact pressures; however, distal and anterior femoral tunnel malpositioning in the setting of patella alta resulted in grossly elevated maximum patellofemoral contact pressures as compared to other scenarios. Conclusions: Patella alta after MPFL reconstruction results in decreased lateral restraining forces and patellofemoral contact area and increased maximum patellofemoral contact pressures. When the femoral MPFL tunnel is malpositioned anteriorly or distally on the femur, the maximum patellofemoral contact pressures increase with severity of patella alta. Clinical Relevance: When evaluating patients with patellofemoral instability, it is important to recognize patella alta as a potential aggravating factor. Failure to address patella alta in the setting of MPFL femoral tunnel malposition may result in

  13. Relevamiento total del hemisferio sur celeste en la frecuencia de 1420 MHz

    NASA Astrophysics Data System (ADS)

    Bava, J. A.; Colomb, F. R.; Hurrel, E.; Larrarte, J. J.; Sanz, A. J.; Testori, J. C.; Reich, P.; Reich, W.; Wielebinski, R.

    En el presente artículo se describe el relevamiento del cielo en el Hemisferio Sur Celeste en la frecuencia de 1420 MHz para declinaciones δ<= -19o realizado con la Antena II de 30 metros de diámetro del IAR. Este relevamiento posee igual sensibilidad (3xr.m.s=50 mK) que el realizado en el Hemisferio Norte con el radiotelescopio de 25 metros de Stockert de la Universidad de Bonn, operado por el Max-Planck Institute für Radioastronomie ( Reich W., 1982, A&ASS 48, 219; Reich P. and Reich W., 1986, A&ASS 63, 205). Con los datos obtenidos por ambos radiotelescopios se posee una base de datos de todo el cielo en esta frecuencia. En esta publicación presentamos los detalles del sistema receptor, técnicas de observación y reducción de datos, calibración y discusión de los errores en los resultados.

  14. Densidad de desarrollo alta y baja en Puerto Rico

    Treesearch

    William A. Gould; Sebastian Martinuzzi; Olga M. Ramos Gonzalez

    2008-01-01

    Este mapa demuestra la distribución de terrenos de alta y baja densidad de desarrollo urbano en Puerto Rico (Martinuzzi et al. 2007). El mapa fue creado mediante el analisis de un mosaico de imagenes de satelite Landsat ETM+ de los años 2000 – 2003. La clasificacion no supervisada ISODATA (“Iterative Self-Organizing Data Analysis Technique”) (ERDAS 2003) fue utilizada...

  15. Chemical composition and antidiabetic activity of Opuntia Milpa Alta extracts.

    PubMed

    Luo, Chuan; Zhang, Wannian; Sheng, Chunquan; Zheng, Chengjian; Yao, Jianzhong; Miao, Zhenyuan

    2010-12-01

    Three new compounds, 1-3, and 20 known compounds were isolated from the AcOEt and BuOH extract of edible Opuntia Milpa Alta. The petroleum ether extract was examined by GC and MS. A total of 26 compounds were identified, representing 95.6% of the total extract, phytosterol (36.03%) being the most abundant component, and polyunsaturated fatty acids (18.57%) represented the second largest group, followed by phytol (12.28%), palmitic acid, palmitate (13.54%), vitamin E (4.51%), and other compounds (7.47%). The effects of various extracts from edible Opuntia Milpa Alta (petroleum ether extract, AcOEt extract, BuOH extract, aqueous extract, H₂O parts) and the positive control (received dimethylbiguanide) were tested on streptozotocin (STZ)-induced diabetic mice. The results indicated that all the treatment groups could significantly decrease blood glucose levels in STZ-induced diabetic mice compared to the model control group (P<0.01), except the aqueous extract group (P<0.05). Especially, the petroleum ether extract group and the positive control group showed remarkable decrease of blood glucose levels. Taken together, the results indicate that the petroleum ether extract is the major hypoglycemic part in edible Opuntia Milpa Alta, which may be developed to a potential natural hypoglycemic functional ingredient.

  16. Evaluation of patella alta using MRI measurements in adolescents.

    PubMed

    Yılmaz, Barış; Ozdemir, Guzelali; Sirin, Evrim; Cicek, Esin D; Anıl, Burcu S; Bulbun, Goncagul

    2017-01-01

    To determine whether or not there were any differences in the measurement techniques used by orthopedic and radiology specialists in the evaluation of magnetic resonance (MR) images for the diagnosis of patella alta in adolescents. Evaluations were performed by three orthopedic specialists (Group I) and three radiology specialists (Group II) regarding the presence of patella alta in 40 adolescents cases using the Insall-Salvati, Caton-Deschamps, Blackburne-Peel, and modified Insall-Salvati indices on MR images obtained to diagnose patellar instability. The Fleiss Kappa conformity levels for Insall-Salvati, Caton-Deschamps, Blackburne-Peel, and modified Insall-Salvati measurements were 0.531, 0.559, 0.246, and 0.272, respectively, in Group I, and 0.699, 0.346, 0.516, and 0.394, respectively, in Group II. The radiology specialists were found to have greater conformity in the evaluation of all patella alta indices, which was probably due to their greater familiarity with radiological measurements than that of the orthopedic specialists.

  17. Evaluation of patella alta using MRI measurements in adolescents

    PubMed Central

    Yılmaz, Barış; Ozdemir, Guzelali; Sirin, Evrim; Cicek, Esin D; Anıl, Burcu S; Bulbun, Goncagul

    2017-01-01

    Purpose: To determine whether or not there were any differences in the measurement techniques used by orthopedic and radiology specialists in the evaluation of magnetic resonance (MR) images for the diagnosis of patella alta in adolescents. Materials and Methods: Evaluations were performed by three orthopedic specialists (Group I) and three radiology specialists (Group II) regarding the presence of patella alta in 40 adolescents cases using the Insall–Salvati, Caton–Deschamps, Blackburne–Peel, and modified Insall–Salvati indices on MR images obtained to diagnose patellar instability. Results: The Fleiss Kappa conformity levels for Insall–Salvati, Caton–Deschamps, Blackburne–Peel, and modified Insall–Salvati measurements were 0.531, 0.559, 0.246, and 0.272, respectively, in Group I, and 0.699, 0.346, 0.516, and 0.394, respectively, in Group II. Conclusion: The radiology specialists were found to have greater conformity in the evaluation of all patella alta indices, which was probably due to their greater familiarity with radiological measurements than that of the orthopedic specialists. PMID:28744079

  18. Biomechanical Assessment of Patellar Advancement Procedures for Patella Alta.

    PubMed

    Seidl, Adam; Baldini, Todd; Krughoff, Kevin; Shapiro, Joshua A; Lindeque, Bennie; Rhodes, Jason; Carollo, James

    2016-05-01

    Crouch gait deformity is common in children with cerebral palsy and often is associated with patella alta. Patellar tendon advancement typically is used to correct patella alta and restore normal knee mechanics. The purpose of this study was to determine the mechanical strength of surgical constructs used for fixation during patellar advancement procedures. This study used a cadaveric model to determine which of 3 surgical techniques is biomechanically optimal for patellar tendon advancement in treating patella alta. Twenty-four human cadaveric knees (8 per group) were prepared using 1 of 3 different common surgical techniques: tibial tubercle osteotomy, patellar tendon partial resection and repair at the distal patella, and patellar tendon imbrication. The patella was loaded from 25 to 250 N at 1 Hz for 1000 cycles. A significant difference in patella displacement under cyclical loading was found between surgical techniques. Tibial tubercle osteotomy exhibited significantly less displacement under cyclical loading than distal patella excision and repair (P<.0001) or imbrication (P=.0088). Imbrication exhibited significantly less displacement than distal patella excision and repair (P=.0006). Tibial tubercle osteotomy survived longest. Based on failure criteria of 5 mm of displacement, tibial tubercle osteotomy lasted between 250 and 500 cycles. The other 2 techniques failed by 25 cycles. This study offers quantitative evidence regarding the relative mechanical strength of each construct and may influence choice of surgical technique. [Orthopedics. 2016; 39(3):e492-e497.]. Copyright 2016, SLACK Incorporated.

  19. 75 FR 55323 - Alta Wind Holdings, LLC; Notice of Petition for Declaratory Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-10

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind Holdings, LLC; Notice of Petition for Declaratory Order September 2, 2010. Take notice that on August 31, 2010, Alta Wind Holdings, LLC filed a Petition...

  20. 75 FR 76455 - Alta Wind I, LLC; Notice of Petition for Declaratory Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-08

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind I, LLC; Notice of Petition for Declaratory Order December 1, 2010. Take notice that on November 19, 2010, Alta Wind I, LLC filed a Petition for Declaratory...

  1. Aluminum potassium sulfate and tannic acid (ALTA) injection as the mainstay of treatment for internal hemorrhoids.

    PubMed

    Hachiro, Yoshikazu; Kunimoto, Masao; Abe, Tatsuya; Kitada, Masahiro; Ebisawa, Yoshiaki

    2011-06-01

    Aluminum potassium sulfate and tannic acid (ALTA) induce noninvasive sclerosis and the involution of hemorrhoids by initiating an inflammatory reaction. We assessed the mid-term outcome after ALTA sclerotherapy for symptomatic hemorrhoids. Between May 2006 and July 2009, 1210 patients with grade III or IV hemorrhoids underwent surgery at Kunimoto Hospital. Our treatment strategy for internal hemorrhoids is first establishing whether ALTA therapy is possible for the type of hemorrhoid, and then performing either ALTA therapy or alternatively, ligation and excision (LE) for those types unsuitable for ALTA therapy. A total of 448 patients were treated with ALTA therapy alone (Group A), 706 patients were treated with a combination of ALTA and LE therapy (Group B), and 56 patients were treated with LE alone (Group C). The overall recurrence rates were 3.6% (16/448) and 0.3% (2/706) in Groups A and B, respectively. There was no recurrence in Group C. Rectal ulcers developed at the injection site in four (0.9%) patients from Group A, but they healed within a few months with conservative therapy. ALTA sclerotherapy is a simple and safe treatment for symptomatic hemorrhoids, with few complications.

  2. Health assessment for Vega Alta Public Supply Wells Site, Vega Alta, Puerto Rico, Region 2. CERCLIS No. PRS187147. Final report

    SciTech Connect

    Not Available

    1988-12-02

    The Vega Alta Public Supply Wells Site is a public water supply wellfield located in the municipality of Vega Alta, Puerto Rico. Based on data collected from 1983 to 1985, the ground water is contaminated with volatile organic chemicals (VOCs), notably trichloroethylene, tetrachloroethylene, and 1,2-trans-dichloroethylene. A remediation alternative selected in a Record of Decision dated September 29, 1987 calls for treatment of 4 of the more highly contaminated wells and shutting down 2 others. Remediation efforts are to include air stripping and possibly treatment by carbon adsorption. Monitoring of the effectiveness of these efforts will determined their adequacy to bring the quality of the tap water to acceptable levels. It is not known whether the water currently supplied through the municipality has elevated concentrations of VOCs. Therefore, based on the limited information available, ATSDR has concluded that the Vega Alta Wells site is of public health concern.

  3. Combinación de Valores de Longitud del Día (LOD) según ventanas de frecuencia

    NASA Astrophysics Data System (ADS)

    Fernández, L. I.; Arias, E. F.; Gambis, D.

    El concepto de solución combinada se sustenta en el hecho de que las diferentes series temporales de datos derivadas a partir de distintas técnicas de la Geodesia Espacial son muy disimiles entre si. Las principales diferencias, fácilmente detectables, entre las distintas series son: diferente intervalo de muestreo, extensión temporal y calidad. Los datos cubren un período reciente de 27 meses (julio 96-oct. 98). Se utilizaron estimaciones de la longitud del día (LOD) originadas en 10 centros operativos del IERS (International Earth Rotation Service) a partir de las técnicas GPS (Global Positioning System) y SLR (Satellite Laser Ranging). La serie temporal combinada así obtenida se comparó con la solución EOP (Parámetros de la Orientación Terrestre) combinada multi-técnica derivada por el IERS (C04). El comportamiento del ruido en LOD para todas las técnicas mostró ser dependiente de la frecuencia (Vondrak, 1998). Por esto, las series dato se dividieron en ventanas de frecuencia, luego de haberles removido bies y tendencias. Luego, se asignaron diferentes factores de peso a cada ventana discriminando por técnicas. Finalmente estas soluciones parcialmente combinadas se mezclaron para obtener la solución combinada final. Sabemos que la mejor solución combinada tendrá una precisión menor que la precisión de las series temporales de datos que la originaron. Aun así, la importancia de una serie combinada confiable de EOP, esto es, de una precisión aceptable y libre de sistematismos evidentes, radica en la necesidad de una base de datos EOP de referencia para el estudio de fenómenos geofísicos que motivan variaciones en la rotación terrestre.

  4. Distal Hemorrhoidectomy With ALTA Injection: A New Method for Hemorrhoid Surgery

    PubMed Central

    Abe, Tatsuya; Hachiro, Yoshikazu; Ebisawa, Yoshiaki; Hishiyama, Houhei; Kunimoto, Masao

    2014-01-01

    Aluminum potassium sulfate and tannic acid injection (ALTA) is a useful and less-invasive treatment for internal hemorrhoids. However, it is not a treatment option for external hemorrhoidal diseases, including mixed hemorrhoids. Distal hemorrhoidectomy with ALTA injection involves surgical resection of external piles, followed by injection therapy on internal piles. We report technical details and the short-term results of this procedure in patients with mixed hemorrhoids. Seventy-two patients with mixed hemorrhoids treated between 2010 and 2011 were included. The main outcome measures were the short-term response and complication rates. At 28 days after surgery, the disappearance rate of prolapse was 100%. Three patients (4%) had postoperative complications, all minor in nature. No prolapse recurrence was observed within a median follow-up period of 6 months. Distal hemorrhoidectomy with ALTA injection appears to be a promising treatment option for patients with mixed hemorrhoids. PMID:24833156

  5. Distal hemorrhoidectomy with ALTA injection: a new method for hemorrhoid surgery.

    PubMed

    Abe, Tatsuya; Hachiro, Yoshikazu; Ebisawa, Yoshiaki; Hishiyama, Houhei; Kunimoto, Masao

    2014-01-01

    Aluminum potassium sulfate and tannic acid injection (ALTA) is a useful and less-invasive treatment for internal hemorrhoids. However, it is not a treatment option for external hemorrhoidal diseases, including mixed hemorrhoids. Distal hemorrhoidectomy with ALTA injection involves surgical resection of external piles, followed by injection therapy on internal piles. We report technical details and the short-term results of this procedure in patients with mixed hemorrhoids. Seventy-two patients with mixed hemorrhoids treated between 2010 and 2011 were included. The main outcome measures were the short-term response and complication rates. At 28 days after surgery, the disappearance rate of prolapse was 100%. Three patients (4%) had postoperative complications, all minor in nature. No prolapse recurrence was observed within a median follow-up period of 6 months. Distal hemorrhoidectomy with ALTA injection appears to be a promising treatment option for patients with mixed hemorrhoids.

  6. Three-dimensional transfer of the tibial tuberosity for patellar instability with patella alta.

    PubMed

    Otsuki, Shuhei; Nakajima, Mikio; Oda, Shuhei; Hoshiyama, Yoshiaki; Fujiwara, Kenta; Jotoku, Tsuyoshi; Neo, Masashi

    2013-05-01

    Although patellar instability can be treated with several surgical procedures, the appropriate surgical treatment for patellar instability with patella alta has not yet been investigated. The objective of this study is to find out whether three-dimensional transfer of the tibial tuberosity elicits good knee functionality with improved patella alta and prevents further patellar dislocation. Twelve knees (10 patients) underwent surgery for patellar instability with patella alta from 2007 to 2011. The surgery performed was a three-dimensional transfer for the anteromedial distalization of the tibial tuberosity. Predisposing anatomical factors for patellar instability were evaluated preoperatively; femorotibial angle (FTA), patella alta (IS ratio), trochlear dysplasia (sulcus angle) and tilting angle (lateral tilt). The function of the knee was assessed before and after surgery by Lysholm and Kujala score. Before surgery, the IS ratio was 1.34 ± 0.13, lateral tilt was 22.4° ± 6.5°, and the sulcus angle was 151.7° ± 8.3°, indicating patella alta, laterality, and trochlear dysplasia. After surgery, the IS ratio and lateral tilt significantly improved to 0.95 ± 0.13, and 10.6° ± 3.4°, respectively. FTA and sulcus angle were not altered. Lysholm and Kujala score improved from 63.8 to 94.7 and 67.0 to 94.1 points, respectively. Most patients displayed good outcomes except for one patient who suffered re-dislocation by hitting their knee on the floor, 2.5 years after surgery. Three-dimensional tibial tuberosity transfer was shown to correct the patella position and result in a good clinical outcome. This method is introduced as an alternative surgery for patellar instability with patella alta.

  7. Pilot-Scale Demonstration of ALTA for NOx Control in Pulverized Coal-Fired Boilers

    SciTech Connect

    Andrew Fry; Devin Davis; Marc Cremer; Bradley Adams

    2008-04-30

    This report describes computational fluid dynamics (CFD) modeling and pilot-scale testing conducted to demonstrate the ability of the Advanced Layered Technology Approach (ALTA) to reduce NO{sub x} emissions in a pulverized coal (PC) boiler. Testing specifically focused on characterizing NO{sub x} behavior with deep burner staging combined with Rich Reagent Injection (RRI). Tests were performed in a 4 MBtu/hr pilot-scale furnace at the University of Utah. Reaction Engineering International (REI) led the project team which included the University of Utah and Combustion Components Associates (CCA). Deep burner staging and RRI, combined with selective non-catalytic reduction (SNCR), make up the Advanced Layered Technology Approach (ALTA) for NO{sub x} reduction. The application of ALTA in a PC environment requires homogenization and rapid reaction of post-burner combustion gases and has not been successfully demonstrated in the past. Operation of the existing low-NO{sub x} burner and design and operation of an application specific ALTA burner was guided by CFD modeling conducted by REI. Parametric pilot-scale testing proved the chemistry of RRI in a PC environment with a NOx reduction of 79% at long residence times and high baseline NOx rate. At representative particle residence times, typical operation of the dual-register low-NO{sub x} burner provided an environment that was unsuitable for NO{sub x} reduction by RRI, showing no NOx reduction. With RRI, the ALTA burner was able to produce NO{sub x} emissions 20% lower than the low-NO{sub x} burner, 76 ppmv vs. 94 ppmv, at a burner stoichiometric ratio (BSR) of 0.7 and a normalized stoichiometric ratio (NSR) of 2.0. CFD modeling was used to investigate the application of RRI for NO{sub x} control on a 180 MW{sub e} wall-fired, PC boiler. A NO{sub x} reduction of 37% from baseline (normal operation) was predicted using ALTA burners with RRI to produce a NO{sub x} emission rate of 0.185 lb/MBtu at the horizontal nose of

  8. Dinámica y frecuencias características de una protuberancia solar observada con los instrumentos SUMER y CDS/SOHO

    NASA Astrophysics Data System (ADS)

    Rovira, M.; Costa, A.; Bocchialini, K.

    La estructura de la protuberancia estudiada puede dividirse en cuatro regiones. A partir del análisis de las imágenes del CDS y los espectros del SUMER utilizando técnicas de multiresolución con Wavelets se obtuvieron las frecuencias y velocidades relativas de cada una de las regiones. Se observan frecuencias características del orden de los 5 min y otras de largo período. Se obtuvo una fuerte anticorrelación entre las intensidades y las velocidades Doppler. La presencia de las oscilaciones de 5 min en todas las regiones sugieren el acoplamiento entre la estructura cromosférica y la protuberancia.

  9. ALTA injection sclerosing therapy:non-excisional treatment of internal hemorrhoids.

    PubMed

    Miyamoto, Hidenori; Asanoma, Michihito; Miyamoto, Hideyuki; Shimada, Mitsuo

    2012-01-01

    Aluminum potassium sulfate and tannic acid (ALTA) is a new sclerosing therapy for internal hemorrhoids. This injection therapy is a four-step direct injection sclerosing procedure intended to shrink and harden internal hemorrhoids to eliminate hemorrhoidal prolapse and bleeding. The aim of this study was to assess the short term efficacy of this treatment. The procedure was conducted using a four-step injection process under perianal local anesthesia. The entry point for the four-step injection of ALTA is the submucosa of the superior pole, the submucosa in the central part, the mucous lamina propria in the central part and the submucosa at the inferior pole of hemorrhoid. From January 2009 to March 2010, we performed the ALTA sclerosing therapy on 28 patients (14 men and 14 women; mean age, 64.6 years), including 5 second-degree, 16 third-degree and 7 fourth-degree hemorrhoids. There were 6 postoperative complications (2 cases of low grade fever, 2 anal pains, 1 necrosis at injection site and 1 perianal dermatitis). All symptoms of prolapse or bleeding disappeared after 29 postoperative days. There were 3 recurrent cases (10.7%). ALTA sclerosing therapy is a useful and less invasive treatment for internal hemorrhoids.

  10. 77 FR 23712 - Alta Wind VII, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind VII, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization This is a supplemental notice in the above-referenced proceeding of Alta Wind VII,...

  11. 77 FR 23711 - Alta Wind IX, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind IX, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization This is a supplemental notice in the above-referenced proceeding of Alta Wind IX, LLC's...

  12. 78 FR 18973 - Alta Wind XI, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-28

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind XI, LLC; Supplemental Notice That Initial Market-Based Rate Filing...-referenced proceeding, of Alta Wind XI, LLC's application for market-based rate authority, with an...

  13. 76 FR 3881 - Application To Export Electric Energy; TransAlta Energy Marketing (U.S.) Inc.

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-21

    ... Application To Export Electric Energy; TransAlta Energy Marketing (U.S.) Inc. AGENCY: Office of Electricity Delivery and Energy Reliability, DOE. ACTION: Notice of application. SUMMARY: TransAlta Energy Marketing (U... be surplus energy purchased from electric utilities, Federal power marketing agencies, and other...

  14. 78 FR 18972 - Alta Wind X, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-28

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind X, LLC; Supplemental Notice That Initial Market-Based Rate Filing...-referenced proceeding, of Alta Wind X, LLC's application for market-based rate authority, with an...

  15. 78 FR 33101 - Notice of Availability of the Record of Decision for the Alta East Wind Project, Kern County...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-03

    ...-energy generation facility on a 2,592- acre site (public and private lands) with 106 wind turbines... Bureau of Land Management Notice of Availability of the Record of Decision for the Alta East Wind Project... Alta East Wind Project (AEWP). The Acting Assistant Secretary for Land and Minerals Management approved...

  16. 77 FR 35669 - AltaGas Renewable Energy Colorado LLC; Supplemental Notice That Initial Market-Based Rate Filing...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-14

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission AltaGas Renewable Energy Colorado LLC; Supplemental Notice That Initial... notice in the above-referenced proceeding of AltaGas Renewable Energy Colorado LLC application for market...

  17. Patellar maltracking is prevalent among patellofemoral pain subjects with patella alta: an upright, weightbearing MRI study.

    PubMed

    Pal, Saikat; Besier, Thor F; Beaupre, Gary S; Fredericson, Michael; Delp, Scott L; Gold, Garry E

    2013-03-01

    The purpose of this study is to determine if patellar maltracking is more prevalent among patellofemoral (PF) pain subjects with patella alta compared to subjects with normal patella height. We imaged 37 PF pain and 15 pain free subjects in an open-configuration magnetic resonance imaging scanner while they stood in a weightbearing posture. We measured patella height using the Caton-Deschamps, Blackburne-Peel, Insall-Salvati, Modified Insall-Salvati, and Patellotrochlear indices, and classified the subjects into patella alta and normal patella height groups. We measured patella tilt and bisect offset from oblique-axial plane images, and classified the subjects into maltracking and normal tracking groups. Patellar maltracking was more prevalent among PF pain subjects with patella alta compared to PF pain subjects with normal patella height (two-tailed Fisher's exact test, p<0.050). Using the Caton-Deschamps index, 67% (8/12) of PF pain subjects with patella alta were maltrackers, whereas only 16% (4/25) of PF pain subjects with normal patella height were maltrackers. Patellofemoral pain subjects classified as maltrackers displayed a greater patella height compared to the pain free and PF pain subjects classified as normal trackers (two-tailed unpaired t-tests with Bonferroni correction, p<0.017). This study adds to our understanding of PF pain in two ways-(1) we demonstrate that patellar maltracking is more prevalent in PF pain subjects with patella alta compared to subjects with normal patella height; and (2) we show greater patella height in PF pain subjects compared to pain free subjects using four indices commonly used in clinics. Copyright © 2012 Orthopaedic Research Society.

  18. Patellar maltracking is prevalent among patellofemoral pain subjects with patella alta: an upright, weightbearing MRI study

    PubMed Central

    Pal, Saikat; Besier, Thor F.; Beaupre, Gary S.; Fredericson, Michael; Delp, Scott L.; Gold, Garry E.

    2012-01-01

    The purpose of this study is to determine if patellar maltracking is more prevalent among patellofemoral (PF) pain subjects with patella alta compared to subjects with normal patella height. We imaged 37 PF pain and 15 pain free subjects in an open-configuration magnetic resonance imaging scanner while they stood in a weightbearing posture. We measured patella height using the Caton-Deschamps, Blackburne-Peel, Insall-Salvati, Modified Insall-Salvati, and Patellotrochlear indices, and classified the subjects into patella alta and normal patella height groups. We measured patella tilt and bisect offset from oblique-axial plane images, and classified the subjects into maltracking and normal tracking groups. Patellar maltracking was more prevalent among PF pain subjects with patella alta compared to PF pain subjects with normal patella height (two-tailed Fisher’s exact test, p < 0.050). Using the Caton-Deschamps index, 67% (8/12) of PF pain subjects with patella alta were maltrackers, whereas only 16% (4/25) of PF pain subjects with normal patella height were maltrackers. Patellofemoral pain subjects classified as maltrackers displayed a greater patella height compared to the pain free and PF pain subjects classified as normal trackers (two-tailed unpaired t-tests with Bonferroni correction, p < 0.017). This study adds to our understanding of PF pain in two ways - 1) we demonstrate that patellar maltracking is more prevalent in PF pain subjects with patella alta compared to subjects with normal patella height; and 2) we show greater patella height in PF pain subjects compared to pain free subjects using four indices commonly used in clinics. PMID:23165335

  19. Quadriceps Weakness, Patella Alta and Structural Features of Patellofemoral Osteoarthritis: The Multicenter Osteoarthritis Study

    PubMed Central

    Stefanik, Joshua J.; Guermazi, Ali; Zhu, Yanyan; Zumwalt, Ann C.; Gross, K. Douglas; Clancy, Margaret; Lynch, John A.; Segal, Neil A.; Lewis, Cora E.; Roemer, Frank W.; Powers, Christopher M.; Felson, David T.

    2011-01-01

    Objective To determine the relationship between quadriceps weakness and cartilage damage and bone marrow lesions (BMLs) in the patellofemoral joint (PFJ), and if this relationship is modified by patella alta. Methods The Multicenter Osteoarthritis (MOST) Study is a cohort study of persons aged 50–79 years with or at risk for knee OA. Concentric knee extensor strength was measured using an isokinetic dynamometer. Patella alta was measured using the Insall-Salvati ratio (ISR) on the lateral radiograph, and cartilage damage and bone marrow lesions (BMLs) were graded on MRI in the PFJ. We determined the association between quadriceps weakness with cartilage damage and BMLs in the PFJ among those knees with (ISR≥1.2) and without patella alta (ISR<1.2) using multiple binomial regression. Results 807 knees were studied (mean age 62 years, BMI 30, ISR 1.10), 64% from female subjects. Compared with knees in the highest strength tertile, those in the lowest had 10.2% {95% Confidence Interval (CI) 3–18}, 9.1% (95% CI 2–16), and 7.1% (95% CI 1–13) higher prevalence of lateral PFJ cartilage damage, medial PFJ cartilage damage, and lateral PFJ BMLs, respectively. The association between quadriceps weakness with cartilage damage and BMLs was not different between knees with and with out patella alta in the lateral PFJ. Conclusion Quadriceps weakness was associated with PFJ cartilage damage and BMLs. While both patella alta and quadriceps weakness are associated with PFJ damage, the combination of the two was not associated with more damage than either of these factors alone. PMID:21702087

  20. [A case of laparoscopic surgery for a rectal carcinoid after ALTA therapy for an internal hemorrhoid].

    PubMed

    Aomatsu, Naoki; Nakamura, Masanori; Hasegawa, Tsuyoshi; Nakao, Shigetomi; Uchima, Yasutake; Aomatsu, Keiho

    2014-11-01

    We report a case of laparoscopic surgery for a rectal carcinoid after aluminum potassium and tannic acid (ALTA) therapy for an internal hemorrhoid. A 66-year-old man was admitted to our hospital because of bleeding during defecation. He was diagnosed via anoscopy with Goligher grade II internal hemorrhoids. Examination via colonoscopy revealed 2 yellowish submucosal tumors in the lower rectum that were 5mm and 10mm in diameter. A rectal carcinoid tumor was diagnosed based on histopathology. Abdominal computed tomography demonstrated no metastases to the liver or lymph nodes. First, we performed ALTA therapy for the internal hemorrhoids. Two weeks later, we performed laparoscopic-assisted low anterior resection (D2) for the rectal carcinoid. The patient was discharged without complications and has not experienced recurrence during the 2 years of follow-up care.

  1. Detection of Blotted Proteins on Nitrocellulose/PVDF Membranes by Alta.

    PubMed

    Pal, Jayanta K; Rao, Shilpa J; Godbole, Dhanashri J

    2015-01-01

    We describe here a simple method of staining nitrocellulose/PVDF blots by Alta. This red-colored stain which is used as a cosmetic contains Crocein scarlet and Rhodamine B as the principal components. It is very cheap, is available as a ready-to-use liquid, and is as sensitive as the most commonly used stain Ponceau Red S. We further demonstrate that Crocein scarlet (one of the principal components) alone can be used for staining the blots with equal efficiency as well. The stained protein profile can be detected on a white light plate and documented in the usual manner. Detailed analysis indicates that this stain does not interfere with subsequent immunoreactions. Moreover, Alta is almost 100 times cheaper to the routinely used stain Ponceau Red S, and thus is an ideal alternative to the Ponceau Red S for staining blots during western blot analysis.

  2. Semitendinosus Tendon Transfer Associated With Distal Alignment for Patella Alta in a Patient With Recurrent Dislocations

    PubMed Central

    Calderazzi, Filippo; Pellegrini, Andrea; Coviello, Gianluca; Groppi, Giulia; Ceccarelli, Francesco

    2015-01-01

    Patellofemoral instability is characterized by pain during normal daily activities and frequent dislocation events. In the reported case, an adolescent girl, aged 15 years, affected by left patellofemoral instability, underwent surgery with a double technique comprising tibial tubercle distalization and medial patellofemoral ligament reconstruction. In case of patella alta associated with patellofemoral instability, surgical treatment should focus on medial patellofemoral ligament repair and on recurrent instability prevention. PMID:26900548

  3. Semitendinosus Tendon Transfer Associated With Distal Alignment for Patella Alta in a Patient With Recurrent Dislocations.

    PubMed

    Calderazzi, Filippo; Pellegrini, Andrea; Coviello, Gianluca; Groppi, Giulia; Ceccarelli, Francesco

    2015-10-01

    Patellofemoral instability is characterized by pain during normal daily activities and frequent dislocation events. In the reported case, an adolescent girl, aged 15 years, affected by left patellofemoral instability, underwent surgery with a double technique comprising tibial tubercle distalization and medial patellofemoral ligament reconstruction. In case of patella alta associated with patellofemoral instability, surgical treatment should focus on medial patellofemoral ligament repair and on recurrent instability prevention.

  4. Determination of reference values and frequency of occurrence of patella alta in German shepherd dogs: a retrospective study.

    PubMed

    Łojszczyk-Szczepaniak, Anna; Silmanowicz, Piotr; Komsta, Renata; Osiński, Zbigniew

    2017-05-31

    Patella alta and patella baja are important conditions underlying a predisposition to many joint diseases, including patellar luxation and patellar chondromalacia of the articular cartilage. The frequencies of patella alta and patella baja have not yet been determined. The objectives of this study were to determine the frequency of patella alta and to determine reference values to the position of the vertical patella according to two modified techniques of the Insall-Salvati method in a group of 65 German shepherd dogs (115 stifle joints). The upper limits of reference values for the normal vertical position of the patella were 1.79 and 2.13, depending on the method of measurement. A high prevalence of patella alta was observed in the group of German shepherd dogs. A correlation was demonstrated between the classification of dogs' joints in the patella alta group and the multiplied risk of canine hip dysplasia (CHD) through the estimation of odds ratios. Dogs with patella alta were healthy dogs that did not exhibit orthopaedic problems in the stifle joints. The results revealed that the risk of CHD is twice as high in dogs with higher patellar ligament length to patella length ratio.

  5. Resultados del relevamiento de HI en el Cielo Austral: 3. Relevamiento de Nubes de Alta Velocidad

    NASA Astrophysics Data System (ADS)

    Morras, R.; Bajaja, E.; Arnal, E. M.; Pöppel, W. G. L.

    Los resultados del relevamiento de HI del Hemisferio Austral fueron reprocesados con el fin de incrementar su sensibilidad. Así, se utilizó esta nueva base de datos con el fin de obtener un nuevo relevamiento de Nubes de Alta Velocidad en el cielo austral. El ruido r.m.s. alcanzado es de 0.015-0.020 K, con una resolución espectral de 8 km/seg. El cubrimiento espacial del relevamiento mejora en un factor 16 al realizado por Bajaja et al (1985).

  6. Data and shape files for the sedimentation survey of Lago La Plata, Toa Alta, Puerto Rico

    USGS Publications Warehouse

    Gomez-Fragoso, Julieta

    2016-01-01

    This data release contains spatial data associated the sedimentation survey conducted by the U.S. Geological Survey cfor the Lago La Plata, Toa Alta, Puerto Rico, during March and April 2015 to provide up-to-date information about the relation of pool elevation and storage volume in the reservoir. The survey was conducted in cooperation with the Puerto Rico Aqueduct and Sewer Authority. A total of 264 navigation lines were surveyed, using a depth sounding device coupled to a global positioning system. The results of the survey were used to prepare a bathymetric map showing the reservoir bottom referenced with respect to the spillway elevation.

  7. A single-step simultaneous protein staining procedure for polyacrylamide gels and nitrocellulose membranes by Alta during western blot analysis.

    PubMed

    Pal, Jayanta K; Berwal, Sunil K; Soni, Rupali N

    2012-01-01

    A simple method for staining of proteins simultaneously on sodium dodecyl sulfate (SDS) polyacrylamide gels and nitrocellulose membranes by Alta during western blot analysis is described. A 5% solution of Alta, a commercially available cosmetic preparation, is added in the upper tank buffer during electrophoresis. On completion of electrophoresis, the gel is washed in distilled water and viewed on a white light plate and a transilluminator to photograph the protein profiles. The gel is processed for western blot transfer of proteins onto a nitrocellulose membrane, and upon completion, the protein profiles on the membrane are viewed and photographed as stated above. The membrane can then be processed for immunostaining as per the standard procedure. Thus, the staining procedure using Alta is simple, rapid (without any need of destaining), and cost-effective.

  8. Does Patella Tendon Tenodesis Improve Tibial Tubercle Distalization in Treating Patella Alta? A Computational Study.

    PubMed

    Yin, Li; Liao, Tzu-Chieh; Yang, Liu; Powers, Christopher M

    2016-11-01

    Patellofemoral malalignment associated with patella alta may cause pain and arthritis; because of this, the condition sometimes is treated surgically. Two common procedures are tibial tubercle distalization with or without patellar tendon tenodesis. However, the biomechanical consequences of these interventions for patella alta are not clearly understood. We evaluated changes in patellofemoral joint contact mechanics after tibial tubercle distalization and tibial tubercle distalization combined with patella tendon tenodesis. Specifically, we asked: (1) Are there biomechanical differences between these two types of procedures? (2) Is there an ideal range to distalize the patella? Subject-specific finite-element models were created for 10 individuals with patella alta (mean Insall-Salvati ratio of 1.34 ± 0.05). Input parameters for the finite-element models included subject-specific joint geometry, quadriceps muscle forces, and weightbearing patellofemoral joint kinematics. Virtual operations were conducted to simulate the two procedures. For distalization, the tibial tubercle and patella were displaced distally 4 mm to 20 mm in 4-mm increments based on the original model. At each level of distalization, the patella tendon was attached back to its original insertion to simulate the additional tenodesis procedure. Cartilage stress, contact area, and contact forces were quantified and compared between procedures and distalization levels. Distalization and distalization + tenodesis reduced patellofemoral joint stress compared with the baseline of 1.02 ± 0.11 MPa. Distalization led to lower cartilage stress than distalization + tenodesis, and the effect size was relatively large (0.88 ± 0.10 MPa vs 0.92 ± 0.10 MPa; mean difference, 0.04 MPa [95% CI, 0.02 MPa-0.05 MPa], p < 0.01; effect size of 1.64 [Cohen's d], with Insall-Salvati ratio decreased to 0.95). For both procedures, the trend of stress reduction plateaued when the Install

  9. First record of Hesperolabops nigriceps Reuter (Hemiptera: Miridae) on Opuntia ficus-indica in Milpa Alta, Mexico City.

    PubMed

    Palomares-Pérez, Martín; Rodríguez-Leyva, Esteban; Brailovsky, Harry; Ramírez-Alarcón, Samuel

    2010-01-01

    In recent years a species of Hesperolabops has become a problem as a pest of nopalitos, Opuntia ficus-indica, in Milpa Alta, in the south of Mexico City, which is the most important production region of this vegetable in the country. A survey of Hesperolabops in Milpa Alta has resulted in the first report of Hesperolabops nigriceps Reuter. This occurrence should be monitored and considered in future studies in order to avoid misidentification of Hesperolabops spp. Kirkaldy native populations there, and to avoid the confusion of the damage that may be caused on O. ficus-indica.

  10. Geologic and hydrologic data collected at test hole NC-8, Vega Alta, Puerto Rico

    USGS Publications Warehouse

    Rodríguez-Martínez, Jesús; Scharlach, Richard A.

    1994-01-01

    Test hole NC-8 was drilled in the municipality of Vega Alta as part of a study of the aquifers in the Northern Coastal Province of Puerto Rico. Test hole NC-8 was drilled to a depth of 1,736 feet below land surface. Geologic and hydrologic data collected during drilling included continuous core, water- quality samples, water-level measurements, and estimates of aquifer yields from the water-bearing zones. Test hole NC-8 penetrated five geologic formations of middle Tertiary age: the Aymamon Limestone, the Los Puertos Formation, the Cibao Formation, the Lares Limestone, and the San Sebastian Formation. Test hole NC-8 penetrated a water-table aquifer and seven artesian aquifers.

  11. Giant-geode endowment of tumuli in the Veia Alta flow, Ametista do Sul

    NASA Astrophysics Data System (ADS)

    Hartmann, L. A.; Pertille, J.; Duarte, L. C.

    2017-08-01

    Tumuli are a common feature of pahoehoe basaltic flows, interspersed with pits, and furnished the necessary volume of rock in the Paraná volcanic province for hydrothermal alteration and ballooning to form large cavities (1-2 m common). Filling by amethyst and other minerals resulted in the largest world deposit of geodes, Ametista do Sul. The flat-lying fracture positioned 1 m below the 2-3 m thick geodic level crosses the plateau and is a major guide for exploration and gallery opening. The geodes are limited on the top by the platy joint layer, which is covered by an auto-breccia with undulating lower limit. This wave mimicks and is internal to the structure of tumuli and pits at the surface. This field-oriented survey of galleries selected out of 300 active mines resulted in the description of the internal structure of the remarkable Veia Alta pahoehoe flow, in addition to observations in Uruguay.

  12. Genetic diversity in cassava landraces grown on farms in Alta Floresta-MT, Brazil.

    PubMed

    Tiago, A V; Rossi, A A B; Tiago, P V; Carpejani, A A; Silva, B M; Hoogerheide, E S S; Yamashita, O M

    2016-09-02

    Brazil is considered one of the domestication centers of cassava (Manihot esculenta), containing a large part of the biological diversity and traditional knowledge of the species. The aim of the present study was to evaluate the genetic diversity of cassava landraces grown by farmers in the north of Mato Grosso State, Brazil, using inter simple sequence repeat (ISSR) molecular markers. The study was carried out in the municipality of Alta Floresta, MT, on farms located in two rural areas. Seventeen cassava landraces were selected. The DNA was extracted and polymerase chain reaction amplifications were performed using 15 ISSR primers. Genetic similarity estimates were calculated using Jaccard's index and the generated matrix was used for clustering the genotypes by using UPGMA and Tocher's methods. The 15 ISSR primers amplified 120 fragments, revealing 61.67% polymorphism. The polymorphism information content ranged from 0.04 to 0.61, averaging 0.39. The most similar genotypes were AF5 and AF8, whereas the least similar were AF1 and AF16. The UPGMA clustering method formed five groups. Group I included twelve landraces, Group II contained two, and the other groups contained one landrace each. Tocher's method resulted in six groups: 12 landraces clustered in one group, and the other groups each contained one landrace. The ISSR markers proved efficient in revealing genetic diversity among the cassava landraces. The landraces grown by farmers in the two rural areas of Alta Floresta have a great variability and, thus, can be exploited in programs for breeding and preservation of the species.

  13. 75 FR 57015 - Alta Wind V, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind V, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization September 10, 2010. This is a supplemental notice in the above-referenced proceeding of...

  14. 75 FR 48665 - Alta Wind I, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-11

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind I, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization August 4, 2010. This is a supplemental notice in the above-referenced proceeding, of Alt...

  15. 75 FR 57013 - Alta Wind III, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind III, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization September 10, 2010. This is a supplemental notice in the above-referenced proceeding o...

  16. 75 FR 57014 - Alta Wind IV, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind IV, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization September 10, 2010. This is a supplemental notice in the above-referenced proceeding of...

  17. 75 FR 57014 - Alta Wind II, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alta Wind II, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization September 10, 2010. This is a supplemental notice in the above-referenced proceeding of...

  18. Alta Scuola Politecnica: An Ongoing Experiment in the Multidisciplinary Education of Top Students towards Innovation in Engineering, Architecture and Design

    ERIC Educational Resources Information Center

    Benedetto, S.; Bernelli Zazzera, F.; Bertola, P.; Cantamessa, M.; Ceri, S.; Ranci, C.; Spaziante, A.; Zanino, R.

    2010-01-01

    Politecnico di Milano and Politecnico di Torino, the top technical universities in Italy, united their efforts in 2004 by launching a unique excellence programme called Alta Scuola Politecnica (ASP). The ASP programme is devoted to 150 students, selected each year from among the top 5-10% of those enrolled in the Engineering, Architecture and…

  19. 78 FR 11672 - Notice of Availability of the Final Environmental Impact Statement for the Alta East Wind Project...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-19

    ... of Mojave and 11 miles east of the city of Tehachapi. The project would include wind turbines, access... East Wind Project, Kern County, CA, and Proposed Land Use Plan Amendment AGENCY: Bureau of Land... (CDCA) Plan Amendment/Final Environmental Impact Statement (EIS) for the Alta East Wind Project (Project...

  20. Alta Scuola Politecnica: An Ongoing Experiment in the Multidisciplinary Education of Top Students towards Innovation in Engineering, Architecture and Design

    ERIC Educational Resources Information Center

    Benedetto, S.; Bernelli Zazzera, F.; Bertola, P.; Cantamessa, M.; Ceri, S.; Ranci, C.; Spaziante, A.; Zanino, R.

    2010-01-01

    Politecnico di Milano and Politecnico di Torino, the top technical universities in Italy, united their efforts in 2004 by launching a unique excellence programme called Alta Scuola Politecnica (ASP). The ASP programme is devoted to 150 students, selected each year from among the top 5-10% of those enrolled in the Engineering, Architecture and…

  1. Natural and induced endoreic hydrological conditions in the Alta Murgia karstic region (Apulia, Southern Italy)

    NASA Astrophysics Data System (ADS)

    Canora, F.; Fidelibus, M. D.; Spilotro, G.

    2009-04-01

    A study aimed at understanding the hydrological processes in karst areas related to the presence of natural and artificial endoreic basins and their modification due to land use change, as well as the influence of above factors on the infiltration rate has been carried out in the Alta Murgia region (Apulia, Southern Italy). The region is a Cretaceous limestone plateau of the Apulian platform, characterized by a mature karstic landscape: due to its elevation, climatic conditions and lithology, the plateau constitutes the main recharge area of the Murgia aquifer. The typical karst topography is essentially related to the subterranean drainage (sinkholes, caves, conduit): surface and subsurface karst geomorphology is strictly interrelated with hydrology. The morphological features of the karstic plateau are defined by the high density of surface karstic forms (mainly dolines), the presence of exposed karst and karren fields, as well as by the extensive outcrop of fractured rocks. Karst surface shows, on the bottom of the morpho-structural depressions called "lame", natural distribution of modest deposits of "terra rossa" and regolith. The "lame" work as streams during and after intense rainfall events, often outlining a primordial ephemeral hydrographical network, frequently convergent towards dolines, poljes or endoreic basins. Alta Murgia shows many natural endoreic basin conditions in a quite flat morphology. In this environment, when intense rainfall events cover large areas and rainfall intensity exceeds the infiltration capacity of soils and/or sinkholes, significant runoff amounts are produced and stored in the basins causing floods. Most of the natural endoreic basins are small and independent: while the majority of them continue functioning as endoreic even in presence of extreme events of high return time, others (quasi-endoreic), under the same circumstances can start contributing to other basins, due to exceeding their water storage capability. This way

  2. Birds of a high-altitude cloud forest in Alta Verapaz, Guatemala.

    PubMed

    Eisermann, Knut; Schulz, Ulrich

    2005-01-01

    The Northern Central American Highlands have been recognized as endemic bird area, but little is known about bird communities in Guatemalan cloud forests. From 1997 to 2001 a total of 142 bird species were recorded between 2000 and 2400 masl in cloud forest and agricultural clearings on Montaña Caquipec (Alta Verapaz, Guatemala). The bird community is described based on line transect counts within the forest. Pooling census data from undisturbed and disturbed forest, the Gray-breasted Wood-Wren (Henicorhina leucophrys) was found to be the most abundant species, followed in descending order by the Common Bush-Tanager (Chlorospingus ophthalmicus), the Paltry Tyrannulet (Zimmerius vilissimus), the Yellowish Flycatcher (Empidonax flavescens), the Ruddy-capped Nightingale-Thrush (Catharus frantzi), and the Amethyst-throated Hummingbird (Lampornis amethystinus). Bird communities in undisturbed and disturbed forest were found to be similar (Serensen similarity index 0.85), indicating low human impact. Of all recorded species, approximately 27% were Nearctic-Neotropical migratory birds. The most abundant one was the Wilson's Warbler (Wilsonia pusilla). The Montaña Caquipec is an important area for bird conservation, which is indicated by the presence of four species listed in the IUCN Red List (Highland Guan Penelopina nigra, Resplendent Quetzal Pharomachrus mocinno, Pink-headed Warbler Ergaticus versicolor, Golden-cheeked Warbler Dendroica chrysoparia), and 42 Mesoamerican endemics, of which 14 species are endemic to the Central American Highlands. The results presented here will be useful as baseline data for a long-term monitoring.

  3. Treatment of Patella Alta with Taping, Exercise, Mobilization, and Functional Activity Modification: A Case Report

    PubMed Central

    Harris-Hayes, Marcie

    2014-01-01

    Study Design Case report. Background Knee pain associated with patella alta (PA) can limit involvement in sport or work activities and prevent an individual from performing basic functional tasks. This case report describes the use of patellar taping to treat an individual with PA. Case Description The patient was a 56 year-old female with bilateral knee pain associated with PA. The focus of treatment was to decrease pain during functional activities by using tape to correct patella alignment. The patient was also instructed on specific exercises and mobilizations. The primary outcome measure was the ADL subscale of the Knee Outcome Survey (ADL-KOS). Outcomes Initially, the patient scored a 50 on the ADL-KOS and rated her function at 30% of normal. She demonstrated symptom improvement when tape was applied appropriately and was, therefore, instructed in tape application. At discharge, the patient scored a 56 on the ADL-KOS and rated her function at 70% of normal. Discussion This case demonstrates the effective use of a taping method for the treatment of pain associated with PA. Taping appears to be a safe, conservative, and cost efficient measure to manage symptoms and to improve activity tolerance in this patient. PMID:21721996

  4. Small mammals from the Chelemhá Cloud Forest Reserve, Alta Verapaz, Guatemala

    USGS Publications Warehouse

    Matson, Jason O.; Ordóñez-Garza, Nicté; Woodman, Neal; Bulmer, Walter; Eckerlin, Ralph P.; Hanson, J. Delton

    2014-01-01

    We surveyed the small mammals of remnant mixed hardwood-coniferous cloud forest at elevations ranging from 2,100–2,300 m in the Chelemhá Cloud Forest Reserve, Alta Verapaz, Guatemala. Removal-trapping using a combination of live traps, snap traps, and pitfall traps for 6 days in January 2007 resulted in 175 captures of 15 species of marsupials, shrews, and rodents. This diversity of small mammals is the highest that we have recorded from a single locality of the 10 visited during eight field seasons in the highlands of Guatemala. Based on captures, the most abundant species in the community of small mammals is Peromyscus grandis (n = 50), followed by Handleyomys rhabdops (n = 27), Heteromys desmarestianus(n = 18), Reithrodontomys mexicanus (n = 17), Handleyomys saturatior (n = 16), Sorex veraepacis (n = 15), and Scotinomys teguina (n = 13). The remaining eight species were represented by one to five individuals.

  5. Purification and neuroprotective effects of polysaccharides from Opuntia Milpa Alta in cultured cortical neurons.

    PubMed

    Chen, Yang; Zhao, Bo; Huang, Xiaolan; Zhan, Jinjin; Zhao, Yan; Zhou, Mei; Guo, Lianjun

    2011-11-01

    Opuntia is a traditional plant from China with medicinal applications. In this experiment, polysaccharides from Opuntia Milpa Alta (MAPs) were analyzed using gas chromatograph-mass spectrometer (GC-MS) method and result showed that MAPs contained mannose (6.37%), rhamnose (14.94%), xylose (1.99%), arabinose (24.07%), galactose (38.25%), ribose (2.63%) and glucose (11.48%). The neuroprotective effects of MAPs were evaluated at the mechanistic level in vitro models of cerebral ischemic injury. In vitro oxygen/glucose deprivation (OGD) model, MAPs (0.5 μg/ml, 5 μg/ml, 50 μg/ml) effectively increased cell viability by methyl thiazolyl tetrazolium (MTT) assay, inhibited cell cytotoxicity by lactate dehydrogenase (LDH) assay, reduced neuronal cell death, suppressed the production of intracellular reactive oxygen species (ROS), decreased of intracellular free Ca(2+) concentrations ([Ca(2+)](i)), and reduced extracellular glutamate level. Therefore, MAPs might prevent intracellular calcium overload and decreased glutamate excitotoxicity, both of which can cause neuronal injury and death in vitro models of cerebral ischemic injury.

  6. Integrated satellite InSAR and slope stability modeling to support hazard assessment at the Safuna Alta glacial lake, Peru

    NASA Astrophysics Data System (ADS)

    Cochachin, Alejo; Frey, Holger; Huggel, Christian; Strozzi, Tazio; Büechi, Emanuel; Cui, Fanpeng; Flores, Andrés; Saito, Carlos

    2017-04-01

    The Safuna glacial lakes (77˚ 37' W, 08˚ 50' S) are located in the headwater of the Tayapampa catchment, in the northernmost part of the Cordillera Blanca, Peru. The upper lake, Laguna Safuna Alta at 4354 m asl has formed in the 1960s behind a terminal moraine of the retreating Pucajirca Glacier, named after the peak south of the lakes. Safuna Alta currently has a volume of 15 x 106 m3. In 2002 a rock fall of several million m3 from the proximal left lateral moraine hit the Safuna Alta lake and triggered an impact wave which overtopped the moraine dam and passed into the lower lake, Laguna Safuna Baja, which absorbed most of the outburst flood from the upper lake, but nevertheless causing loss in cattle, degradation of agricultural land downstream and damages to a hydroelectric power station in Quitaracsa gorge. Event reconstructions showed that the impact wave in the Safuna Alta lake had a runup height of 100 m or more, and weakened the moraine dam of Safuna Alta. This fact, in combination with the large lake volumes and the continued possibility for landslides from the left proximal moraine pose a considerable risk for the downstream settlements as well as the recently completed Quitaracsa hydroelectric power plant. In the framework of a project funded by the European Space Agency (ESA), the hazard situation at the Safuna Alta lake is assessed by a combination of satellite radar data analysis, field investigations, and slope stability modeling. Interferometric analyses of the Synthetic Aperture Radar (InSAR) of ALOS-1 Palsar-1, ALOS-2 Palsar-2 and Sentinel-1 data from 2016 reveal terrain displacements of 2 cm y-1 in the detachment zone of the 2002 rock avalanche. More detailed insights into the characteristics of these terrain deformations are gained by repeat surveys with differential GPS (DGPS) and tachymetric measurements. A drone flight provides the information for the generation of a high-resolution digital elevation model (DEM), which is used for the

  7. Staining of proteins on SDS polyacrylamide gels and on nitrocellulose membranes by Alta, a colour used as a cosmetic.

    PubMed

    Pal, Jayanta K; Godbole, Dhanashri; Sharma, Kiran

    2004-11-30

    We describe here the use of Alta, a pre-existing scarlet-red stain of cosmetic use, for staining proteins on sodium dodecyl sulfate (SDS) polyacrylamide gels, as well as for a single step staining of gels and nitrocellulose membranes during Western blot analysis. This stain, which is composed of 0.8% Crocein scarlet (brilliant crocein) and 0.2% Rhodamine B, is inexpensive, easy to use and nearly as sensitive as Coomassie Brilliant Blue (CBB) R-250. The gels can be stained in 10% Alta (2 h) and can be destained effectively only with 7% acetic acid as opposed to the conventional destainer (methanol/acetic acid/water) required for CBB-stained gels. In an alternative procedure, the proteins can be stained on the gel while electrophoresis by simply using 5% Alta in the top tank buffer and the stain can be viewed under UV-transilluminator. This procedure can also be used for Western blot analysis, as a single step procedure for staining of proteins on the gel as well as on the nitrocellulose membrane, as the stain is retained on the membrane after protein transfer. Thus, this staining procedure allows monitoring of proteins after each step in the Western blot, thereby eliminating the need to run separate gels for staining and Western blot analysis, and also the need for Ponceau Red S staining of the nitrocellulose membrane during Western blot analysis.

  8. [Analysis of the patients who missed their appointments at the neurology clinic of the Marina Alta].

    PubMed

    Morera-Guitart, J; Mas-Server, M A; Más-Sesé, G

    To analyze the frequency, reasons and characteristics of patients who missed their appointments (NP) at the Neurology Clinic (CEN). To compare the characteristics of the NP with the patients who did not miss their appointment. Suggest measures to reduce avoidable causes of NP. During the period 1/10/99 to 30/4/2000 the cases of NP were prospectively recorded and compared with a sample of patients who attended the CEN during the same period. We analyze the data on age, sex, distance of home from CEN, diagnosis, type of consultation and date of last consultation. The NP were contacted by phone and asked why they had not gone for their appointments. The reasons given were then classified as avoidable or unavoidable. Of the 1,842 consultations scheduled, 19% were NP. When the NP and the patients who did attend were compared we found statistically significant differences regarding the distance home/CEN. According to the diagnosis, the NP had more 'symptoms/signs' and other MIA, whilst those who attended the clinic had more 'neuropathies' and 'awaiting diagnosis'. The commonest avoidable reasons (55.8%) for NP were forgetting, administrative error and communication failure, and for unavoidable reasons (44.2%) physical disability, other priorities and improvement. There is a large proportion of NP in the CEN of the Marina Alta. The distance from home to CEN (over 25 km) was the main factor affecting the rate of NP. Since 56% of the NP were due to avoidable causes, strategies could be designed to reduce this percentage. In the NP group, the main causes were forgetting, administrative errors and communication failure.

  9. Induced abortion and contraception use: among immigrant and Canadian-born women in Calgary, Alta.

    PubMed

    Prey, Beatrice du; Talavlikar, Rachel; Mangat, Rupinder; Freiheit, Elizabeth A; Drummond, Neil

    2014-09-01

    To determine what proportion of women seeking induced abortion in the Calgary census metropolitan area were immigrants. For 2 months, eligible women were asked to complete a questionnaire. Women who refused were asked to provide their country of birth (COB) to assess for selection bias. Two abortion clinics in Calgary, Alta. Women presenting at or less than 15 weeks' gestational age for induced abortion for maternal indications. The primary outcome was the proportion of women seeking induced abortion services who were immigrants. Secondary outcomes compared socioeconomic characteristics and contraception use between immigrant and Canadian-born women. A total of 752 women either completed a questionnaire (78.6%) or provided their COB (21.4%). Overall, 28.9% of women living in the Calgary census metropolitan area who completed the questionnaire were immigrants, less than the 31.2% background proportion of immigrant women of childbearing age. However, 46.0% of women who provided only COB were immigrants. When these data were combined, 34.2% of women presenting for induced abortion identified as immigrant, a proportion not significantly different from the background proportion (P = .127). Immigrant women presenting for induced abortion tended to be older, more educated, married with children, and have increased parity. They were similar to Canadian-born women in number of previous abortions, income status, and employment status. This study suggests that immigrant women in Calgary are not presenting for induced abortion in disproportionately higher numbers, which differs from existing European literature. This is likely owing to differing socioeconomic characteristics among the immigrant women in our study from what have been previously described in the literature (typically lower socioeconomic status). Much still needs to be explored with regard to factors influencing the use of abortion services by immigrant women. Copyright© the College of Family Physicians of

  10. Wet Conditions during the Last Glaciation in the Chihuahuan Desert, Alta Babicora Basin, Mexico

    NASA Astrophysics Data System (ADS)

    Metcalfe, Sarah; Say, Alison; Black, Stuart; McCulloch, Robert; O'Hara, Sarah

    2002-01-01

    A 467-cm core (B94/3) from the Alta Babicora basin in the Chihuahuan Desert, northern Mexico (29°N, 108°W), documents lake-level and climate changes over the past ca. 65,000 yr. Chronological control is provided by four accelerator mass spectrometry 14C dates and five U-series dates on diatom silica. The core has been analyzed for magnetic susceptibility, loss-on-ignition, carbonate content, sediment chemistry and mineralogy, and pollen and diatom composition. The basin was occupied by a deep freshwater lake throughout the late Pleistocene which, based on shoreline evidence, was at least 19 m deeper than today. The lake shallowed after ca. 57,000 yr B.P. High variability typified the period between 54,600 and 38,000 yr B.P., probably with periodic desiccation and deflation. A deep-water lake was reestablished after 38,000 yr B.P. and persisted until ca. 29,000 yr B.P. Shallowing occurred through the last glacial maximum, although the lake was still deeper than at present. The Pleistocene-Holocene transition was marked by a distinctive change in the diatom flora. There is no diatom record for much of the Holocene, but other proxies indicate generally dry, stable catchment conditions. The Babicora record is more akin to those from the southwest United States than it is to Central America and northern South America. Wet conditions in the late Pleistocene are attributed to winter rainfall from midlatitudes in contrast to the modern, tropical, summer rainfall regime.

  11. Adaptation of rainfed agriculture to climatic variability in the Mixteca Alta Region of Oaxaca, Mexico

    NASA Astrophysics Data System (ADS)

    Rogé, P.; Friedman, A. R.; Astier, M.; Altieri, M.

    2015-12-01

    The traditional management systems of the Mixteca Alta Region of Oaxaca, Mexico offer historical lessons about resilience to climatic variability. We interviewed small farmers to inquire about the dynamics of abandonment and persistence of a traditional management systems. We interpret farmers' narratives from a perspective of general agroecological resilience. In addition, we facilitated workshops in small farmers described their adaptation to past climate challenges and identified 14 indicators that they subsequently used to evaluate the condition of their agroecosystems. The most recent years presented increasingly extreme climatic and socioeconomic hardships: increased temperatures, delayed rainy seasons, reduced capacity of soils to retain soil moisture, changing cultural norms, and reduced rural labor. Farmers reported that their cropping systems were changing for multiple reasons: more drought, later rainfall onset, decreased rural labor, and introduced labor-saving technologies. Examination of climate data found that farmers' climate narratives were largely consistent with the observational record. There have been increases in temperature and rainfall intensity, and an increase in rainfall seasonality that may be perceived as later rainfall onset. Farmers ranked landscape-scale indicators as more marginal than farmer management or soil quality indicators. From this analysis, farmers proposed strategies to improve the ability of their agroecosystems to cope with climatic variability. Notably, they recognized that social organizing and education are required for landscape-level indicators to be improved. Transformative change is required to develop novel cropping systems and complementary activities to agriculture that will allow for farming to be sustained in the face of these challenges. Climate change adaptation by small farmers involves much more than just a set of farming practices, but also community action to tackle collective problems.

  12. [Evaluation of heart rate and blood pressure in residents of Milpa Alta, D.F].

    PubMed

    Sánchez-Girón, C; Brust-Mascher, E; De Icaza-Herrera, M; Vidrio-Amor, H; Brust-Carmona, H

    1992-01-01

    Both the altitude of Mexico City (D.F.) and the increase in atmospheric pollutants make it important to establish parameters of comparison for cardiovascular variables, such as heart rate (HR) and blood pressure (BP). The epidemiological transition occurring in Mexico is increasing the need for human and physical resources at the first level of health care in order to perform early diagnoses of cardiovascular disorders among the population. Heart rate, systolic and diastolic blood pressures (SBP, DBP) were recorded under diverse conditions (seated, standing, performing 30 sit-ups, and then standing and seated after the sit-ups) in 235 inhabitants of Milpa Alta (a suburb of Mexico City). The procedures and equipment used were designed and produced at the Center for Development and Technological Applications, Ministry of Health. The following results were found: HR decreases with age and body surface. Likewise, the HR increase due to exercise is lower with increasing age and larger body surface and its return to resting levels is slower. SBP and DBP magnitude is directly related to body surface. In women an increase of body weight was found to be significantly related to a higher SBP. The orthostatic reflex (OR) decreases with age and body surface. The descending slope is higher in women than in men. We propose that the study of OR could provide better information for predicting cardiovascular changes. The described procedures can be performed with the physical and human resources available at the Health Centers. The extension of this type of applied research to first level health care centers would allow the country to respond efficiently to the epidemiological transition.

  13. CTB 80 en bajas frecuencias

    NASA Astrophysics Data System (ADS)

    Castelletti, G.; Dubner, G.; Golap, H.; Goss, W. M.

    CTB 80 is a supernova remnant (SNR) which shows, in radio wavelengths, a complex morphology composed by three arms or extended regions and a central nebula formed by winds from the pulsar PSR B1951+32 physically associated with the remnant. New observations of the SNR CTB 80 have been carried out using the Giant Metrewave Radio Telescope (GMRT, Pune-India) at 240 MHz (beam ˜ 20'') and 618 MHz (beam ˜ 8''), and at 324 MHz (beam ˜ 65'') and 1380 MHz (beam ˜ 80'') using the Very Large Array (VLA, USA). These radio-images show with unprecedented detail new structures in the nebula powered by the pulsar. Likewise, the high dynamic range attained in the images allows us identify faint structures in the extended regions which closely match the optical and infrared emission.

  14. Sedimentation survey of Lago La Plata, Toa Alta, Puerto Rico, March–April 2015

    USGS Publications Warehouse

    Gómez-Fragoso, Julieta

    2016-10-31

    IntroductionLago La Plata is operated by the Puerto Rico Aqueduct and Sewer Authority (PRASA) and is part of the San Juan Metropolitan Water District. The reservoir serves a population of about 425,000 people. During 2013 the reservoir provided 0.307 million cubic meters (Mm3 ) of water per day (about 81 million gallons per day), which is equivalent to 31 percent of the total water demand for the metropolitan area (Wanda L. Molina, U.S. Geological Survey, written commun., 2015). The dam was constructed in 1974 and is located about 5 kilometers (km) south of the town of Toa Alta and 5 km north of the town of Naranjito (fig. 1). The drainage area upstream from the Lago La Plata dam is about 469 square kilometers (km2 ). The storage capacity at construction in 1974 was 26.84 Mm3 with a spillway elevation of 47.12 meters (m) above mean sea level (msl). Storage capacity was increased to 40.21 Mm3 in 1989 after the installation of bascule gates to provide a normal dam pool elevation at 52 m above msl (Puerto Rico Electric and Power Authority, 1979). The maximum height of the dam is about 40 m above the river bottom near the dam, and the intake structure consists of six 1.82-m-diameter ports facing upstream, with 6-m vertical spacing that begins at an elevation of 19 m above msl. The U.S. Geological Survey (USGS), in cooperation with the PRASA, conducted a bathymetric survey of the Lago La Plata reservoir during March and April 2015. The hydrographic survey was designed to provide an update of the reservoir storage capacity and sedimentation rate. Areas with substantial sediment accumulation are also discussed in this report. The results of the survey were used to prepare a bathymetric map showing the reservoir bottom (fig. 2) referenced with respect to the spillway elevation. This report also includes a summary of a previous bathymetric survey conducted in 2006 (Soler-López, 2008).

  15. Biotechnical performance of vegetal species in slope conservation in Cruz Alta, RS, Brazil

    NASA Astrophysics Data System (ADS)

    Prates Bisso, Fernando; Durlo, Miguel

    2016-04-01

    The aim of this work was the evaluation of biotechnical performance of different vegetal species growth in the slope soil conservation and reforest (revegetate). The study was performed with oxic soil talus, in Cruz Alta - RS, Brazil (28°23'28.14" S and 53°22'25.61" W) and began in January 2010. The sow treatments employed were: 1) cuttings of Ateleia glazioveana; 2) cuttings of Pyrostegia venusta; 3) seedlings of Baccharis trimera; 4) Seedlings of Cynodom plectostachyus; 5) blank, no sow. The evaluated parameters were: plant survival ratio (%); vegetal covered percentage; natural revegetation (plants/m2); the slope soil level reduction (cm); and water and soil runoff. C. plectostachyus and B. trimera afforded considerable higher survival (92% and 78.5%, respectively) and vegetation cover of the slope (99.6% and 82.9%) than other species. The natural revegetation showed an increase according to the ground above the slope (146.9 plants/m2) compared with the slope ramp (22.1 plants/m2). Moreover, C. plectostachyus, A. glazioveana, P. venusta, B. trimera and C. plectostachyus treatments showed 34.9, 28.6, 23.0 and 21.0 plants/m2, respectively, when compared with the blank (2.5 plants/m2) in the slope ramp region. Furthermore, the sow line regions gave 91.2 plants/m2) whereas the regions among lines afforded 8.6 plants/m2. Additionally, C. plectostachyus showed soil average drawdown profile decrease of 12.8 mm after 360 days after planting, and A. glazioveana reached 16.9 mm after 540 days according to the blank (34.0 mm). Considering the period of 60 to 360 days, it was observed significant differences in the soil loss estimative and reduction percentage compared to blank were: Blank 127.9 ton/ha/year; A. glazioveana, 117.9 ton/ha/year (-8%); P. venusta, 116.3 ton/ha/year (-9%); B. trimera, 106.7 ton/ha/year (-17%); and C. plectostachyus, 73.2 ton/ha/year (-43%). Thus, C. plectostachyus showed the best survival and vegetal coverage producing significant reduction of

  16. Pollination biology of Eulophia alta (Orchidaceae) in Amazonia: effects of pollinator composition on reproductive success in different populations

    PubMed Central

    Jürgens, Andreas; Bosch, Simone R.; Webber, Antonio C.; Witt, Taina; Frame, Dawn; Gottsberger, Gerhard

    2009-01-01

    Background and Aims Spatial variation in pollinator composition and abundance is a well-recognized phenomenon. However, a weakness of many studies claiming specificity of plant–pollinator interactions is that they are often restricted to a single locality. The aim of the present study was to investigate pollinator effectiveness of the different flower visitors to the terrestrial orchid Eulophia alta at three different localities and to analyse whether differences in pollinator abundance and composition effect this plant's reproductive success. Methods Natural pollination was observed in vivo, and manipulative experiments were used to study the pollination biology and breeding system of E. alta at three sites near Manaus, Brazil. To gain a better understanding of the underlying mechanisms of pollinator attraction, nectar composition and secretion patterns were also studied, floral scent composition was analysed and a bioassay was conducted. Key Results Flower visitors, pollinator composition, pollinia transfer efficiency of particular pollinator species and natural fruit set differed among the investigated populations of E. alta. Flowers were self-compatible, partially autogamous and effectively pollinated by five bee species (four Centris species and Xylocopa muscaria). Visiting insects appeared to imbibe small amounts of hexose-rich nectar. Nectar sugar content was highest on the third day after flower opening. Floral fragrance analyses revealed 42 compounds, of which monoterpenes and benzenoids predominated. A bioassay using floral parts revealed that only floral tissue from the labellum chamber and labellum tip was attractive to flower visitors. Conclusions The data suggest that observed differences in reproductive success in the three populations cannot be explained by absolute abundance of pollinators alone. Due to behavioural patterns such as disturbance of effective pollinators on flowers by male Centris varia bees defending territory, pollinia transfer

  17. Pollination biology of Eulophia alta (Orchidaceae) in Amazonia: effects of pollinator composition on reproductive success in different populations.

    PubMed

    Jürgens, Andreas; Bosch, Simone R; Webber, Antonio C; Witt, Taina; Frame, Dawn; Gottsberger, Gerhard

    2009-10-01

    Spatial variation in pollinator composition and abundance is a well-recognized phenomenon. However, a weakness of many studies claiming specificity of plant-pollinator interactions is that they are often restricted to a single locality. The aim of the present study was to investigate pollinator effectiveness of the different flower visitors to the terrestrial orchid Eulophia alta at three different localities and to analyse whether differences in pollinator abundance and composition effect this plant's reproductive success. Natural pollination was observed in vivo, and manipulative experiments were used to study the pollination biology and breeding system of E. alta at three sites near Manaus, Brazil. To gain a better understanding of the underlying mechanisms of pollinator attraction, nectar composition and secretion patterns were also studied, floral scent composition was analysed and a bioassay was conducted. Flower visitors, pollinator composition, pollinia transfer efficiency of particular pollinator species and natural fruit set differed among the investigated populations of E. alta. Flowers were self-compatible, partially autogamous and effectively pollinated by five bee species (four Centris species and Xylocopa muscaria). Visiting insects appeared to imbibe small amounts of hexose-rich nectar. Nectar sugar content was highest on the third day after flower opening. Floral fragrance analyses revealed 42 compounds, of which monoterpenes and benzenoids predominated. A bioassay using floral parts revealed that only floral tissue from the labellum chamber and labellum tip was attractive to flower visitors. The data suggest that observed differences in reproductive success in the three populations cannot be explained by absolute abundance of pollinators alone. Due to behavioural patterns such as disturbance of effective pollinators on flowers by male Centris varia bees defending territory, pollinia transfer efficiencies of particular pollinator species also vary

  18. Origen de los rayos cósmicos a las más altas energías

    NASA Astrophysics Data System (ADS)

    Horvath, J. E.; Gouveia dal Pino, E. M.; Medina Tanco, G. A.

    Discutimos en este trabajo la identificación de las fuentes de rayos cósmicos de las más altas energías observadas (E >= 1020 eV). Presentamos los resultados de varias simulaciones numéricas 3-D donde se calcula explícitamente el ángulo de desviación α del primario por efecto de los campos magnéticos ambientes. Con estos resultados investigamos las hipótesis de un origen extragaláctico local y halo galáctico.

  19. Human influence on late Holocene fluvial landscape and stratigraphy in the Mixteca Alta of Oaxaca, Mexico

    NASA Astrophysics Data System (ADS)

    Leigh, D. S.; Holdridge, G. H.; Kowalewski, S. A.

    2011-12-01

    The Mixteca Alta of south-central Mexico (state of Oaxaca) is a high-elevation plateau where population and agricultural steadily grew over the past 3000 years, but with a few significant episodes of population decline. Currently, the landscape is highly eroded and gullied in response to widespread land abandonment and diminished population attributed to the Spanish conquest during the 1500s and 1600s. Abandonment apparently resulted in neglect of prehistoric cross-drainage retaining walls, known as lama-bordos, which had been constructed throughout agricultural watersheds for millennia to retain runoff and sediment. Our research seeks to establish the earliest ages for construction of lama-bordos, which are buried by more than 10 m of alluvium in some localities; and we hope to determine if the chronology of alluvial sedimentation is related to fluctuations in population density versus climate changes or other drivers. Sampling is focused on relatively small tributary watersheds (<10 km^2) in the valley of Rio Culebra near the town of Coixlahuaca. Our general hypothesis is counter to Malthusian theory in that we posit land degradation and erosion was punctuated by episodes of population decline when there were insufficient people to maintain the lama-bordo infrastructure. Methods involve: (1) detailed stratigraphic and pedogenic description and sampling of several outcrops; (2) radiocarbon and luminescence dating of stratigraphic sections; (3) geochemical and lithological tracing of sedimentary beds to discriminate time periods of gully erosion; (4) relating the alluvial chronology to archaeological surveys that have established the occupation history of the region. Results indicate that upland gully erosion had occurred prior to widespread human occupation of the area, because >4000 cal yr BP cut-and-fill stratigraphic units commonly contain detritus from upland subsoil and underlying bedrock. We provide numerous radiocarbon dates for the oldest lama-bordos, and

  20. Comparación de resultados del método de clasificación de órbitas por análisis de frecuencias con el método de exponentes de Lyapunov

    NASA Astrophysics Data System (ADS)

    Carpintero, D. D.; Muzzio, J. C.; Wachlin, F. C.

    Hemos realizado extensas comparaciones del método de análisis de frecuencias con el de exponentes de Lyapunov. El primero resulta claramente superior por las siguientes razones: 1) permite distinguir distintos tipos de órbitas y no sólo si son regulares o caóticas 2) es mucho más veloz requiriendo mucho menos tiempo de cómputo. La concordancia de resultados es, en general, buena y se discuten algunas discrepancias.

  1. An aldonolactonase AltA from Penicillium oxalicum mitigates the inhibition of β-glucosidase during lignocellulose biodegradation.

    PubMed

    Peng, Shengjuan; Cao, Qing; Qin, Yuqi; Li, Xuezhi; Liu, Guodong; Qu, Yinbo

    2017-02-04

    Efficient deconstruction of lignocellulose is achieved by the synergistic action of various hydrolytic and oxidative enzymes. However, the aldonolactones generated by oxidative enzymes have inhibitory effects on some cellulolytic enzymes. In this work, D-glucono-1,5-lactone was shown to have a much stronger inhibitory effect than D-glucose and D-gluconate on β-glucosidase, a vital enzyme during cellulose degradation. AltA, a secreted enzyme from Penicillium oxalicum, was identified as an aldonolactonase which can catalyze the hydrolysis of D-glucono-1,5-lactone to D-gluconic acid. In the course of lignocellulose saccharification conducted by cellulases from P. oxalicum or Trichoderma reesei, supplementation of AltA was able to relieve the decrease of β-glucosidase activity obviously with a stimulation of glucose yield. This boosting effect disappeared when sodium azide and ethylenediaminetetraacetic acid (EDTA) were added to the saccharification system to inhibit the activities of oxidative enzymes. In summary, we describe the first heterologous expression of a fungal secreted aldonolactonase and its application as an efficient supplement of cellulolytic enzyme system for lignocellulose biodegradation.

  2. Contact metamorphism surrounding the Alta stock: Finite element model simulation of heat- and {sup 18}O/{sup 16}O mass-transport during prograde metamorphism

    SciTech Connect

    Cook, S.J.; Bowman, J.R.; Forster, C.B.

    1997-01-01

    Results of calcite-dolomite geothermometry and oxygen isotope studies of marbles in the southern portion of the contact aureole surrounding the Alta stock (Utah) provide evidence for extensive hydrothermal metamorphism in this part of the aureole. Simulation of these two independent data sets with two-dimensional, finite element fluid flow and heat transport models constrains the pattern of fluid flow, minimum permeability, and the permeability structure in this part of the aureole. Model results demonstrate that intrusion of the stock into a homogeneous, isotropic permeability medium yields peak metamorphic temperatures significantly lower than those measured in the marbles and significant {sup 18}O depletions both above and below the Alta-Grizzly thrust system. The latter contradicts the observations in the south aureole that {sup 18}O depletions in the marbles are restricted to marbles below the Alta-Grizzly thrust; dolomitic marbles above the thrust retain original sedimentary values up to the intrusive contact. Models with horizontal permeability barriers above the Alta-Grizzly thrust and extending over the top of the Alta stock are capable of reproducing the observed thermal and {delta}{sup 18}O profiles in the southern aureole. The presence of such horizontal barriers reduces the predominantly vertical fluid flow and heat transfer that would occur in a homogeneous and isotropic permeability medium, forcing fluid flow and heat transfer laterally away from the upper flanks of the stock. Such horizontal flow patterns are necessary to produce significant {sup 18}O depletion above the thrust, and to provide the necessary lateral heat transfer to duplicate the observed temperature profile. Best fit model results to the observed thermal and {delta}{sup 18}O profiles provide several new insights into the dynamics of fluid circulation and hydrogeologic characteristics of the southern Alta aureole during prograde metamorphism.

  3. Late Quaternary Paleohydrology of Arroyo Cycles in the Mixteca Alta, Mexico: Insights from Past and Present Alluvial Stratigraphy

    NASA Astrophysics Data System (ADS)

    Holdridge, Geneviève; Leigh, David S.

    2017-04-01

    Arroyos are incised, ephemeral dryland streams that aggrade and incise on a cyclical timescale. Arroyo studies are integral to understanding landscape evolution in drylands, but the drivers and dynamics of arroyo cycles are not fully understood. This paper presents a study of arroyo stratigraphy in the semi-arid environment of the Mixteca Alta, Oaxaca, Mexico. Examination of the late Quaternary environment and geomorphology of the incised, ephemeral tributaries forming the Río Culebra watershed offered insight about the hydrological variability of the region. The characteristics and chronology of alluvium-paleosol sequences from three watersheds in the Mixteca Alta were examined along their upper, middle and downstream sections. In addition, the channel bedforms and stratigraphy of several watersheds were surveyed to evaluate the processes and morphology characterizing the present dryland stream system. Alluvium-paleosol sequences offered valuable information into the paleohydrology and dynamics of the arroyo cycles of the Mixteca Alta. Unweathered alluvium and paleosol formation in alluvium are two end members of alluvial stratigraphy. Cumulic A horizons form on floodplains when aggradation is slow enough to allow for pedogenesis. Cumulic A horizons were observed in both the Culebra and Verde watersheds from the late Pleistocene to the late Holocene, but not in the present-day arroyos, suggesting the prehistoric cumulic A horizons form in less flashy conditions than modern conditions. The geomorphic survey of present-day processes and forms included observing the bed stratigraphy associated with scouring-chains after flash floods. This examination offered insight to understanding and interpreting the alluvium-paleosol stratigraphy. For example, the present channel bed stratigraphy associated with scour-and-fill consists of poorly sorted, massive, sandy gravel deposits. Finer bedded sediments are observed in the present patchy floodplain deposits, but are

  4. Oxygen Isotope and Microtextural Evidence for Fluctuations in Fluid Pressure During Contact Metamorphism, Alta Aureole, Utah, USA

    NASA Astrophysics Data System (ADS)

    Bowman, J. R.; Valley, J. W.; Kita, N.

    2006-12-01

    Thin section-scale textures record a detailed history of prograde and retrograde reactions in the periclase (Per) zone of the Alta Stock aureole. New ion microprobe (SIMS) measurements (10 micron spot, ±0.2 permil, 1sd) of the oxygen isotope compositions of the carbonates preserving these textures provide evidence for at least two cycles of oscillation of fluid pressure (Pfl) between lithostatic (PL) and hydrostatic (Phyd) conditions during evolution of the inner aureole. Infiltration of water-rich fluids during prograde metamorphism converted dolomite (Dol) to Per + calcite (Cal) marble and caused significant 18O/16O depletion in the Dol protolith (Initial δ18O (Cal) > +25 permil), producing Cal with δ18O values of +11 permil. The SIMS values approximate oxygen isotope exchange equilibrium with the Alta stock, indicating that infiltrating fluids were likely magmatic. Exsolution of fluid from the crystallizing magma, coupled with geothermometry from the periclase zone marbles, requires Pfl> PL. Horizontally-oriented expansion cracks filled with brucite (Br) extend from Br pseudomorphs after periclase, and cut retrograde Dol that partially to completely rims the Br pseudomorphs. This earlier retrograde Dol is significantly depleted in 18O/16O relative to matrix Cal, with δ18O of +5 to +7.1 permil. These lower δ18O values indicate that meteoric water infiltrated into the Per marbles during cooling and resulting partial back reaction of Per + Cal to Dol, prior to the hydration of the remaining Per to Br. Influx of meteoric water requires sufficient increase in permeability to permit surface- derived meteoric water to penetrate to the estimated 4.5 km depth of this structural level of the Alta aureole, and suggests a resulting decrease in Pfl to hydrostatic pressure conditions. The horizontally-oriented expansion cracks associated with the Br pseudomorphs indicate that sub-vertical expansion accompanied hydration of Per to Br, requiring that Pfl increase again to

  5. An observatory system for physical and biogeochemical parameters in the northern Adriatic Sea: the "Acqua Alta" oceanographic platform

    NASA Astrophysics Data System (ADS)

    Benetazzo, Alvise; Barbariol, Francesco; Bastianini, Mauro; Bergamasco, Andrea; Bergamasco, Filippo; Bernardi Aubry, Fabrizio; Bertotti, Luciana; Bonaldo, Davide; Cavaleri, Luigi; Carniel, Sandro; Falcieri, Francesco M.; Finotto, Stefania; Lester, Graham; Licer, Matjaz; Malacic, Vlado; Minuzzo, Tiziano; Sclavo, Mauro

    2015-04-01

    The history of the "Acqua Alta" oceanographic platform (http://www.ismar.cnr.it/infrastructures/piattaforma-acqua-alta) started more than forty years ago, shortly after the dramatic surge that affected the city of Venice in late 1966. Since then, benefiting also from recent funding acquired within the National Flagship Project RITMARE, great efforts have been devoted to monitor the oceanographic and atmospheric conditions in the Northern Adriatic Sea (NA), in the proximity of the Venice lagoon. Nowadays the "Acqua Alta", located on a 16 m depth area, represents a success story of the Institute of Marine Sciences (ISMAR) of the Italian National Research Council (CNR), that manages the structure and used collected data to improve the knowledge of the fragile sea environment that surrounds the Venetian littoral. The directional wave observations started in 1979, representing one of the world longest continuous series. On the sea surface, waves are now routinely observed by means of a submerged acoustic-Doppler system that provides burst of directional wave data, including significant wave height, mean wave period and direction of propagation. Currently these wave parameters are integrated with the data collected by a stereo-video system (namely Wave Acquisition Stereo System, WASS) that provides the 3-D profile of the wavy sea surface. WASS data are unleashing a "new view" for ocean waves providing the complete space-time dynamics of wave groups. Moreover, a series of multiparameters probes permits to measure the vertical distribution of sea temperature (at nine depths from the surface to the bottom), salinity (three positions), dissolved oxygen (two positions), and turbidity close to the sea bottom. The collected data are continuously used to track the water masses that enter, leave, and are produced within the NA. A striking example is provided by the temperature and salinity data used to follow the exceptional dense water formation that occurred in this basin

  6. Evidencia de alta concentración de masa en la región nuclear de una galaxia liner

    NASA Astrophysics Data System (ADS)

    Díaz, R.; Carranza, G.; Dottori, H.; Goldes, G.

    Usando técnicas de espectroscopía bidimensional en el telescopio de 1.54 m de Bosque Alegre, se obtuvo el campo de velocidades de la región nuclear de NGC 1672, galaxia LINER con un anillo circumnuclear de regiones HII. La curva de rotación media para los 2 kpc centrales sugiere la presencia de una gran concentración de masa (ρc~ 1011Msolar /kpc3). Este resultado es respaldado por la presencia de ciertos caracteres morfológicos detectados en imágenes obtenidas con el mencionado telescopio. Según recientes simulaciones hidrodinámicas de galaxias barreadas, estos caracteres sugieren la presencia de altas densidades en las regiones nucleares. El análisis espectrofotométrico indicaría, además, la presencia de dos componentes en la emisión nuclear, con una diferencia de velocidades de ~ 200 km/s. La velocidad circular del gas ionizado a 125 pc del centro señalaría la existencia de una masa interior de ~ 7× 108Msolar .

  7. Estudio fotométrico de estrellas tardías de alta luminosidad en 23 cúmulos abiertos

    NASA Astrophysics Data System (ADS)

    Clariá, J. J.; Piatti, A. E.; Osborn, W.

    Se presentan resultados obtenidos en los Observatorios de Cerro Tololo, Kitt Peak, Lowell y Las Campanas, a partir de fotometría UBV y DDO de 54 estrellas tardías de alta luminosidad en 23 cúmulos abiertos. La aplicación de dos criterios fotométricos independientes permite asignar a cada estrella probabilidades de pertenencia a cada agregado. Se encuentra que 32 estrellas son muy probablemente miembros de los cúmulos, mientras que las restantes son objetos del campo. En todos los casos se determinan excesos de color E(B-V) a través de procedimientos fotométricos y espectroscópicos tradicionales. Recientes calibraciones del sistema DDO permiten, además, derivar tipos espectrales MK, temperaturas efectivas, y abundancias superficiales de la muestra examinada. Las metalicidades DDO derivadas se distribuyen entre valores típicos de cúmulos moderadamente pobres en metales ([Fe/H]~=-0.3) y moderadamente ricos ([Fe/H]~=0.2), en tanto que las masas calculadas para las gigantes rojas oscilan entre 1 y 4 masas solares, con una dispersión dentro de cada cúmulo menor que 1 Msolar.

  8. Descripción de la zona de alta difusión en un modelo bidimensional para hojas de corriente

    NASA Astrophysics Data System (ADS)

    Montero, M. F.; Paola, C. A.; Platzeck, A. M.

    Los modelos bidimensionales para describir hojas de corriente de alta simetría no suministran una descripción detallada de las regiones donde la difusión es considerablemente importante. Tal es el caso de los modelos desarrollados en la década del '60 por Sweet, Parker, Petschek y Sonnerup. En esta comunicación presentamos una solución de las ecuaciones MHD en el entorno del origen, construyendo series bidimensionales para todas las magnitudes físicas involucradas. Valiéndonos de la alta simetría y de las características del problema, logramos reducir el número de coeficientes a calcular. Utilizamos un programa autoconsistente para extender el cálculo a regiones vecinas con difusión moderada o despreciable.

  9. Importance of landscape features and Earth observation derived habitat maps for modelling amphibian distribution in the Alta Murgia National Park

    NASA Astrophysics Data System (ADS)

    Ficetola, Gentile Francesco; Adamo, Maria; Bonardi, Anna; De Pasquale, Vito; Liuzzi, Cristiano; Lovergine, Francesco; Marcone, Francesco; Mastropasqua, Fabio; Tarantino, Cristina; Blonda, Palma; Padoa-Schioppa, Emilio

    2015-05-01

    Traditionally, analyses of relationships between amphibians and habitat focused on breeding environments (i.e., pond features) more than on the features of the surrounding environment. Nevertheless, for most amphibians the terrestrial phase is longer than the aquatic phase, and consequently landscape features (i.e., habitat mosaics) may have an important role for modelling amphibian distribution. There were different aims in this analysis. Firstly, we compared the effectiveness of the information provided by land cover/use (LC/LU) classes and habitat classes defined according to a new habitat taxonomy named General Habitat Category (GHC), which is based on the concept of biological forms of dominant vegetation and class naturalness. The GHC map used was obtained from a pre-existing validated LC/LU map, by integrating spectral and spatial measurements from very high resolution Earth observation data according to ecological expert rules involving concepts related to spatial and temporal relationships among LC/LU and habitat classes. Then, we investigated the importance for amphibians of the landscape surrounding ponds within the Italian Alta Murgia National Park. The work assessed whether LC/LU classes in pond surrounds are important for the presence/absence of amphibians in this area, and identified which classes are more important for amphibians. The results obtained can provide useful indications to management strategies aiming at the conservation of amphibians within the study area. An information-theoretic approach was adopted to assess whether GHC maps allow to improve the performance of species distribution models. We used the Akaike's Information Criterion (AICc) to compare the effectiveness of GHC categories versus LC/LU categories in explaining the presence/absence of pool frogs. AICc weights suggest that GHC categories can better explain the distribution of frogs, compared to LC/LU classes.

  10. Forecasts of the atmospherical parameters close to the ground at the LBT site in the context of the ALTA project

    NASA Astrophysics Data System (ADS)

    Turchi, Alessio; Masciadri, Elena; Fini, Luca

    2016-07-01

    In this paper we study the abilities of an atmospherical mesoscale model in forecasting the classical atmospherical parameters relevant for astronomical applications at the surface layer (wind speed, wind direction, temperature, relative humidity) on the Large Binocular Telescope (LBT) site - Mount Graham, Arizona. The study is carried out in the framework of the ALTA project aiming at implementing an automated system for the forecasts of atmospherical parameters (Meso-Nh code) and the optical turbulence (Astro-Meso-Nh code) for the service-mode operation of the LBT. The final goal of such an operational tool is to provide predictions with high time frequency of atmospheric and optical parameters for an optimized planning of the telescope operation (dome thermalization, wind-dependent dome orientation, observation planning based on predicted seeing, adaptive optics optimization, etc...). Numerical simulations are carried out with the Meso-Nh and Astro-Meso-Nh codes, which were proven to give excellent results in previous studies focused on the two ESO sites of Cerro Paranal and Cerro Armazones (MOSE Project). In this paper we will focus our attention on the comparison of atmospherical parameters forescasted by the model close to the ground with measurements taken by the observatory instrumentations and stored in the LBT telemetry in order to validate the numerical predictions. As previously done for Cerro Paranal (Lascaux et al., 2015), we will also present an analysis of the model performances based on the method of the contingency tables, that allows us to provide complementary key information with the respect to the bias and RMSE (systematic and statistical errors), such as the percentage of correct detection and the probability to obtain a correct detection inside a defined interval of values.

  11. The association between patella alta and the prevalence and worsening of structural features of patellofemoral joint osteoarthritis: The Multicenter Osteoarthritis Study

    PubMed Central

    Stefanik, J.J.; Zhu, Y.; Zumwalt, A.C.; Gross, K.D.; Clancy, M.; Lynch, J. A.; Frey Law, L.A.; Lewis, C.E.; Roemer, F.W.; Powers, C.M.; Guermazi, A.; Felson, D.T.

    2010-01-01

    Objective To examine the relationship between patella alta and the prevalence and worsening at follow-up of structural features of patellofemoral joint (PFJ) osteoarthritis (OA) on MRI. Methods The Multicenter Osteoarthritis (MOST) Study is a cohort study of persons aged 50-79 years with or at risk for knee OA. Patella alta was measured using the Insall-Salvati ratio (ISR) on the baseline lateral radiograph and cartilage damage, bone marrow lesions (BMLs), and subchondral bone attrition (SBA) were graded on MRI at baseline and at 30 months follow-up in the PFJ. We examined the association of the ISR with the prevalence and worsening of cartilage damage, BMLs, and SBA in the PFJ using logistic regression. Results 907 knees were studied (mean age 62, BMI 30, ISR 1.10), 63% from female subjects. Compared with knees in the lowest ISR quartile at baseline, those in the highest had 2.4 (95% CI 1.7, 3.3), 2.9 (2.0, 4.3), and 3.5 (2.3, 5.5) times the odds of having lateral PFJ cartilage damage, BMLs, and SBA respectively, and 1.5 (95% CI 1.1, 2.0), 1.3 (0.9, 1.8), and 2.2 (1.4, 3.4) times the odds of having medial PFJ cartilage damage, BMLs, and SBA respectively. Similarly, those with high ISRs were also at risk for worsening of cartilage damage and BMLs over time than those with low ISRs. Conclusion A high ISR, indicative of patella alta, is associated with structural features of OA in the PFJ. Additionally, the same knees have increased risk of worsening of these same features over time. PMID:20506169

  12. Distal tibial tuberosity translation using TTA implants for the treatment of patella alta in large breed dogs. Surgical technique and clinical outcome.

    PubMed

    Pugliese, L C; Pike, F S; Aiken, S W

    2015-01-01

    Medial patellar luxation frequently occurs in dogs resulting in lameness with increasing incidence in large breed dogs. Patella alta has been defined as a patellar ligament length to patellar length ratio that is greater than two and may predispose to patellar luxation. To describe the surgical technique for stabilization of the distal translation of the tibial tuberosity using tibial tuberosity advancement plates and the clinical outcomes with follow-up for clinical cases of dogs. Dogs that were presented with the complaint of patellar luxation and that were concurrently diagnosed with patella alta and were greater than 20 kg in body weight underwent surgery using a tibial tuberosity advancement plate to stabilize the osteotomy. Radiographic assessment of A:PL distance (the ratio of the proximal aspect of the patella to the femoral condyle [A] to the patellar length [PL]), L:P ratio (ratio of the length of the patellar ligament to the diagonal length of the patella), and owner assessment were obtained. Eleven stifles in nine dogs underwent surgical correction with a mean preoperative L:P ratio of 2.47. There were no complications and the lameness resolved clinically. The mean A:PL ratios preoperatively (2.6 ± 0.22) and postoperatively (2.1 ± 0.25) were significantly different (p = 0.0003). All owners were satisfied with the outcome and all dogs had a resolution of lameness with no recurrence of patellar luxation. Stabilization of distal translation of the tibial tuberosity using tibial tuberosity advancement implants to correct patella alta in large breed dogs was feasible and resulted in good clinical outcome.

  13. Impact of land-cover change in the southern Amazonia climate: a case study for the region of Alta Floresta, Mato Grosso, Brazil.

    PubMed

    Dubreuil, Vincent; Debortoli, Nathan; Funatsu, Beatriz; Nédélec, Vincent; Durieux, Laurent

    2012-01-01

    The transformation of forest into pastures in the Brazilian Amazon leads to significant consequences to climate at local scale. In the region of Alta Floresta (Mato Grosso, Brazil), deforestation has been intense with over half the forests being cut since 1970. This article first examines the evolution of precipitation observed in this region and shows a significant trend in the decrease in total precipitation especially at the end of the dry season and at the beginning of the rainy season. The study then compares the temperatures measured in cleared and forested sectors within a reserve in the area of Alta Floresta (Mato Grosso, Brazil) between 2006 and 2007. The cleared sector was always hotter and drier (from 5% to 10%) than the forested area. This difference was not only especially marked during the day when it reached on average 2°C but also seemed to increase during the night with the onset of the dry season (+0.5°C). The Urban Heat Island effect is also evident especially during the night and in the dry season.

  14. Anisometry of Medial Patellofemoral Ligament Reconstruction in the Setting of Patella Alta and Increased Tibial Tubercle-Trochlear Groove (TT-TG) Distance

    PubMed Central

    Redler, Lauren H.; Meyers, Kathleen N.; Munch, Jacqueline; Dennis, Elizabeth R.; Nguyen, Joseph; Stein, Beth E. Shubin

    2016-01-01

    Objectives: Medial patellofemoral ligament (MPFL) reconstruction is a common procedure to treat recurrent patellofemoral instability. However, the effects of an elevated tibial tubercle-trochlear groove (TT-TG) distance and patella alta, as measured by the Caton-Deschamps (C/D) ratio, on MPFL isometry remain unclear. We hypothesized that increased lateralization and proximalization of the tibial tubercle (TT) will have increasingly adverse effects on the isometry of the MPFL. Methods: Ten fresh-frozen cadaveric knees were placed on a custom testing fixture, with a fixed femur and tibia mobile through 120 degrees of flexion. The quadriceps tendon was loaded with 10.8 N in an anatomic direction using a weighted pulley system. A 0.2 N patellar lateral displacement load was used to simulate an intact lateral retinaculum to avoid over-medializing the patella. A tunnel was drilled under fluoroscopic guidance from Schottle’s point on the medial distal femur through the lateral cortex. A suture anchor was placed at the upper 66% of the medial border of the patella and the sutures were shuttled through to the lateral side and attached to a pulley with a 1 N weight. Retroreflective markers were attached to the femur, tibia, patella, and suture. MPFL length change, as measured by suture marker motion, was assessed using a 3D motion capture system through a range of motion between 0 deg and 110 deg with the native TT anatomy. Recordings were repeated after a flat TT osteotomy and transfer to a TT-TG of 20 mm and 25 mm and a C/D ratio of 1.2 and 1.4, including all combinations. Generalized estimating equation (GEE) modeling technique was used to analyze and control for the clustered nature of the data. SAS version 9.3 (SAS Inc., Cary, NC) was used for all data analyses. Results: Analysis was performed on 9 specimens secondary to significant deviations in the baseline normative data. Intact knees showed MPFL isometry through 20-70 degrees range of motion. Tibial tubercle

  15. Traditional alcoholic beverages and their value in the local culture of the Alta Valle del Reno, a mountain borderland between Tuscany and Emilia-Romagna (Italy).

    PubMed

    Egea, Teresa; Signorini, Maria Adele; Ongaro, Luca; Rivera, Diego; Obón de Castro, Concepción; Bruschi, Piero

    2016-06-22

    Traditional alcoholic beverages (TABs) have only received marginal attention from researchers and ethnobotanists so far, especially in Italy. This work is focused on plant-based TABs in the Alta Valle del Reno, a mountainous area on the border between Tuscany and Emilia-Romagna regions. The aims of our study were to document local knowledge about TABs and to analyze and discuss the distribution of related knowledge within the investigated communities. Field data were collected through semi-structured interviews. The relative importance of each plant species used to prepare TABs was assessed by calculating a general Use Value Index (UV general), a current UV (UV current) and a past UV (UV past). We also assessed personal experience of use by calculating effective and potential UV (UV effective, UV potential). A multivariate analysis was performed to compare ingredients in recipes recorded in the Alta Valle del Reno with those reported for neighboring areas. Forty-six plant species, belonging to 20 families, were recorded. Rosaceae was the most significant family (98 citations, 19 species), followed by Rutaceae (15, 3) and Lamiaceae (12, 4). The most important species was Prunus cerasus L. (UV general = 0.44), followed by Juglans regia L. (0.38), Rubus idaeus L. (0.27) and Prunus spinosa L. (0.22). Species with the highest UV current were Juglans regia (0.254), Prunus cerasus (0.238) and Citrus limon L. (0.159). The highest UV effective values were obtained by Prunus cerasus (0.413), Juglans regia (0.254), Rubus idaeus (0.222) and Citrus limon (0.206). We also discuss the results of the multivariate analysis. TABs proved to occupy an important place in the traditional culture and social life of the studied communities. Moreover, data highlight the local specificity and richness of this kind of tradition in the Alta Valle del Reno, compared to other Italian areas. Some plant ingredients used for TABs have potential nutraceutical and even therapeutic properties

  16. Electrodeposition of Al-Ta alloys in NaCl-KCl-AlCl3 molten salt containing TaCl5

    NASA Astrophysics Data System (ADS)

    Sato, Kazuki; Matsushima, Hisayoshi; Ueda, Mikito

    2016-12-01

    To form Al-Ta alloys for high temperature oxidation resistance components, molten salt electrolysis was carried out in an AlCl3-NaCl-KCl melt containing TaCl5 at 423 K. The voltammogram showed two cathodic waves at 0.45 V and 0.7 V vs. Al/Al(III), which may correspond to reduction from Ta(V) to Ta(III) and from Ta(III) to tantalum metal, respectively. Electrodeposits of Al and Ta were obtained in the range from -0.05 to 0.3 V and the highest concentration of Ta in the electrodeposit was 72 at% at 0.3 V. With increasing Ta content in the alloy, the morphology of the electrodeposits became powdery and the particle size smaller.

  17. The environmental balance of the Alta Val d'Agri: a contribution to the evaluation of the industrial risk and strategic sustainable development

    NASA Astrophysics Data System (ADS)

    Loperte, S.; Cosmi, C.

    2015-09-01

    This study presents the preliminary environmental balance of the Alta Val d'Agri (Basilicata Region, Southern Italy), an area of great naturalistic interest characterized by the presence of huge oil and gas fields. The Driving Forces-Pressure-State-Impact-Responses (DPSIR) methodology was used to outline the background in terms of environmental impacts mainly caused by oil extraction activities, as well as potential existing responses. The study aims at providing stakeholders with an exhaustive framework to identify the existing data, the main sources of pollution, their potential impacts, the associated industrial risks and the existing policy strategies. Moreover, the DPSIR approach allows the identification of the vulnerable areas and the definition of targeted actions for a sustainable development of the area.

  18. The environmental balance of the Alta Val d'Agri: a contribution to the evaluation of the industrial risk and strategic sustainable development

    NASA Astrophysics Data System (ADS)

    Loperte, S.; Cosmi, C.

    2015-01-01

    This study presents the preliminary environmental balance of the Alta Val d'Agri (Basilicata Region, Southern Italy), an area of great naturalistic interest characterized by the presence of huge oil and gas fields. The DPSIR methodology has been used to outline the background in terms of environmental impacts mainly caused by the oil extraction activities, as well as existing potential responses. The study aims at providing stakeholders with an exhaustive framework to identify the existing data, the main sources of pollution, their potential impacts, the associated industrial risks and the existing policy strategies. Moreover, the DPSIR approach allows identifying the vulnerable areas and defining targeted actions for a sustainable development of the area.

  19. Paleoecology and paleoenvironments of Permian bivalves of the Serra Alta Formation, Brazil: Ordinary suspension feeders or Late Paleozoic Gondwana seep organisms?

    NASA Astrophysics Data System (ADS)

    Matos, Suzana Aparecida; Warren, Lucas Verissimo; Fürsich, Franz Theodor; Alessandretti, Luciano; Assine, Mario Luis; Riccomini, Claudio; Simões, Marcello Guimarães

    2017-08-01

    This is the first record of a Permian seep deposit and an associated, morphologically bizarre, bivalve-dominated fauna from the Passa Dois Group, Paraná Basin, Brazil. Shales of the outer-shelf facies of the Serra Alta Formation preserve a low-diversity but high-abundant, large-sized bivalve fauna with unusual morphologies inside discoidal carbonate concretions. The bivalves are about ten times larger than tiny bivalves found scattered in laterally equivalent mudstones of the same unit. Intercalated between two concretion-bearing horizons, a cm-thick, sheet-like, disrupted, ;brecciated;, partially silicified carbonate layer with microbially-induced lamination is recorded. In some areas, the carbonate layer shows vertical structures formed by injections of mud mixed with white limestone clasts and microbial linings. Immediately above this, silicified mudstones preserve small domal structures (= mounds) with a slightly depressed center. Monospecific concentrations of closed articulated shells of Tambaquyra camargoi occur at the base of these domes. Carbon-isotope (δ13C) values from the shells, ;brecciated; carbonates, and fossil-rich concretions are all depleted (negative values ∼ -6.1 to -7.6‰). Combined taphonomic, sedimentological, petrographic, geochemical and paleontological data suggest that the disrupted, ;brecciated; carbonate and associated fauna and domes may have formed by an exudation system. Indeed, this interval of the Serra Alta Formation is ∼8.7 m above the contact with the underlying, oil-rich Irati Formation. This unit has very high total organic carbon (up to 23%) values and high sulphur contents, supporting the interpretation of the lithological and paleontological features as result of seepage of organic compounds at the seafloor. Where the gases and hydrocarbons escaped, the seabed was colonized by, at least facultatively, chemosymbiotic bivalves. The species above belong to a highly endemic group of pachydomids that were shallow

  20. Influence of age on clinical outcomes of three-dimensional transfer of the tibial tuberosity for patellar instability with patella alta.

    PubMed

    Otsuki, Shuhei; Nakajima, Mikio; Fujiwara, Kenta; Okamoto, Yoshinori; Iida, Go; Murakami, Tomohiko; Neo, Masashi

    2017-08-01

    To evaluate the clinical outcomes of three-dimensional (3D) transfer of the tibial tuberosity for patellar instability with patella alta, with a focus on the influence of age at initial surgery. Three-dimensional surgery was performed on 28 knees with a mean follow-up of 46 months. Patients were separated into three groups based on the age at initial surgery: group A, 10 knees and an average age of 16.3 ± 1.8 (14-19) years; group B, 10 knees and an average age of 22.1 ± 2.5 (20-28) years; and group C, eight knees and an average age of 44.0 ± 2.2 (40-46) years. Patellofemoral geometry improvement focused on patella alta by determining the Insall-Salvati ratio and Caton-Deschamps index, rotational malalignment by measuring the tibial tubercle-trochlear groove (TT-TG) distance, and lateral patellar subluxation by measuring the patellar tilt. Clinical outcomes were evaluated by the Lysholm and Kujala scores, which were compared before and after surgery. Cartilage degeneration was evaluated by the International Cartilage Repair Society grading system at initial arthroscopy. The patellar height, TT-TG, and patellar tilt significantly improved in all groups postoperatively (p < 0.05). The Lysholm and Kujala scores also significantly improved postoperatively; however, both scores were lower in group C than in the other groups (p < 0.05). Particularly, pain scores were more severe in group C than in the other groups, and the severity of cartilage degeneration correlated with the pain scores (p < 0.05). Cartilage damage differed significantly between the groups at initial arthroscopy; particularly, group C included grades III and IV cartilage degeneration (p < 0.05). Age at initial surgery may be the predicting factor for poor clinical outcomes of 3D transfer surgery. The clinical outcome may depend on the age at surgery, which correlated with cartilage damage; thus, surgeons should be given this information when patients are considered undergoing patella

  1. Lacustrine Records of Forest Fire Indicators and Trace Elements Deposition in an Land Use Change Region in the Brazilian Amazonia (Alta Floresta, MT)

    NASA Astrophysics Data System (ADS)

    Rodrigues, R. R.; Conceicão, M. G.; Cordeiro, R. C.; Turcq, B. J.; Seoane, J. S.; Sifeddine, A.

    2009-05-01

    The dynamics of terrestrial ecosystems depend on interactions between the carbon cycle, nutrient cycles, and the hydrological cycle, all of which may be modified by climate and human actions. Terrestrial ecological systems, in which carbon is retained in live biomass, decomposing organic matter, and soil, play an important role in the global carbon cycle. Human activities change carbon stocks in these pools and exchanges between them and the atmosphere through land-use change and other activities. From 1850 to 1998 about 136 (+55) Gt C has been emitted as a result of land-use change, predominantly from forest ecosystems. Amazonia's carbon storage potential gives great importance to land-use changes in this region because disturbances of the natural landscape can increase atmospheric carbon and affect global biogeochemical cycles. Mercury release from gold mining activities and deforestation are the two most important environmental issues in the Amazon Basin. Gold mining activities in Amazonia have been responsible for the release of about 2000-3000 t of Hg over the last 20 y. In Alta Floresta region (southern Amazonia), concurrent with the deforestation, an intense gold rush occurred with the exploration of riverbed sediments. This region was a significant gold mining site from 1980 to 1996. This study aims to understand the atmospheric deposition rates of charcoal particles, mercury and other trace elements and discuss the environmental changes caused by man activities in an area of an intense land use change. Accordingly to the fact that in Brazilian Amazonia the colonization process generally takes place after the building of a road, an 82 cm core (AF SSW 150) was collected in a lake formed by the barrier effect of a road embankment and distant 150 km of the center of Alta Floresta city. The ages of the sedimentary sections in the core were calculated by the activity of 210Pb. The grain size profile showed a huge change from 1985, with the dominance of fine

  2. Relative importance of the saturated and the unsaturated zones in the hydrogeological functioning of karst aquifers: The case of Alta Cadena (Southern Spain)

    NASA Astrophysics Data System (ADS)

    Mudarra, M.; Andreo, B.

    2011-02-01

    SummaryFrom analysis of the hydrodynamic and hydrochemical responses of karst springs, it is possible to know the behaviour of the aquifers they drain. This manuscript aims to contribute to the characterization of infiltration process, and to determine the relative importance of the saturated zone and of the unsaturated zone in the hydrogeological functioning of carbonate aquifers, using natural hydrochemical tracers. Thus, chemical components together with temperature and electrical conductivity (both punctual and continuous records) have been monitored in three springs which drain Alta Cadena carbonate aquifer, Southern Spain. An evaluation of the percentage of the electrical conductivity frequency peaks determined for each of the three springs is linked to the chemical parameters that comprise the conductivity signal. One of these springs responds rapidly to precipitation (conduit flow system), due to the existence of a high degree of karstification in the unsaturated zone and in the saturated zone, both of which play a similar role in the functioning of the spring. Another spring responds to precipitation with small increases in water flow, somewhat lagged, because the aquifer has a low degree of karstification, even in the unsaturated zone, which seems to influence its functioning more strongly than does the saturated zone. The third spring drains a sector of the aquifer with a moderately developed degree of karstification, one that is intermediate between the other two, in which both the unsaturated zone and the saturated zone participate in the functioning of the spring, but with the latter zone having a stronger influence. These three springs show different hydrogeological functioning although they are in similar geological and climatic contexts, which show the heterogeneity of karst media and the importance of an adequate investigation for groundwater management and protection in karst areas.

  3. [Initial experience in the laparoscopic treatment of benign and malignant gynaecological diseases in the Hospital Regional de Alta Especialidad in Oaxaca].

    PubMed

    Vásquez-Ciriaco, Sergio; Isla-Ortiz, David; Palomeque-Lopez, Antonio; García-Espinoza, Jaime Aron; Jarquín-Arremilla, Arturo; Lechuga-García, Néstor Alonso

    The history of laparoscopic surgery in gynaecological diseases progressed with the advances of Semm, as well as with the development of tools, equipment, and energy that led to its development in all surgical areas, including oncology. To present the initial experience in the laparoscopic treatment of benign and malignant gynaecological disease in the Hospital Regional de Alta Especialidad in Oaxaca. An analysis was performed on a total of 44 cases, distributed into: type III radical hysterectomy for invasive cervical cancer, hysterectomy type I cervical cancer in situ, extrafascial hysterectomy for benign disease, routine endometrium, ovary and routine salpingo-oophorectomy. The variables included age, BMI, surgical time, bleeding, intraoperative and postoperative complications, conversion, hospital stay, and pathology report. Hysterectomy type III; age 40.2 years, BMI 25.8kg/m(2), 238ml bleeding, operative time 228min, 2.6-day hospital stay, intraoperative or postoperative complications, tumour size 1.1cm, 14 lymph nodes dissected, vaginal and negative parametrical edge. Type I hysterectomy cervical cancer in situ: 51 years, BMI 23.8kg/m(2), 80ml bleeding, operative time 127minutes, uterus of 9cm, length of stay of 2 days, a conversion by external iliac artery injury, with bleeding of 1500ml. Routine endometrium: 50.3 years, BMI 30.3kg/m(2), 83ml bleeding, operative time 180minutes, uterus 12.6cm, length of stay 2.3 days, no complications. The management of benign and malignant pelvic diseases using laparoscopy is feasible and safe, with shorter hospital stays and a prompt recovery to daily activities. Copyright © 2016 Academia Mexicana de Cirugía A.C. Publicado por Masson Doyma México S.A. All rights reserved.

  4. "banca del Fare" Summer School in Alta Langa: «THE Ruins to BE Rebuilt Will BE Our CLASSROOMS». Knowledge from Artisans to New Generations, from Ancient Skills to New Building Techniques

    NASA Astrophysics Data System (ADS)

    Villata, M.

    2017-05-01

    "Banca del fare" is an ambitious project proposed by "Cultural Park Alta Langa". It is born to hand ancient knowledges down to young people, as meeting place useful to exchange the development of new construction techniques and at the same time the traditional ones. A program of educational workshops, which constitute the summer school, was organized for increasing communication among different generations. Indeed, the last local craftsmen or artisans are coming out from their employment and there is no training process to ensure the migration of knowledge to young architects. The activities of the school took place for the first time during summer of 2016 in Alta Langa, the southern part of Langhe in Piedmont. The landscape of this area is marked by small rural architectures called "ciabòts" shed all over the countryside. Artisans and students work together to recover these buildings every year. The aim of this landscape heritage's valorization is to relate the restored ciabòt into a network, in order to create a widespread hotels system. Therefore, the essay wants to present the results of "Banca del fare" and to suggest a GIS project that can gather information about numerous "ciabòt" widespread in this territory. The interaction between land development and networking process can ensure the optimal reuse of these rural architectures.

  5. Un sistema protoestelar a bajas frecuencias en radio

    NASA Astrophysics Data System (ADS)

    Peri, C. S.; Benaglia, P.; Martí, J.; Sánchez-Sutil, J. R.; Ishwara-Chandra, C. H.

    2016-08-01

    Stars form in the coolest and densest places of the Galaxy. Protostellar systems are very complex, have several components, produce a rich phenomenology and experiment very interesting physical processes to be studied. There exist a lot of similarities and differences between protostellar systems related to all the mass ranges. A common characteristic related to high--mass protostars is the detection of non--thermal synchrotron radio emission coming from the jets. One system that presents this kind of evidence is 165474247, called that way because of the infrared source on its center. This source has been observed and studied in several radio frequencies and modeled as possible generator of high-energy photons. We present radio maps of the Giant Metrewave Radio Telescope, of 1 deg, at 610 MHz, never reported before, with a noise level of mJy. We detected the entire system of 165474247, center and lobes, and other sources in the region. We name some of them and their counterparts.

  6. Investigação dos perfís temporais de alta resolução de explosões solares tipo-III decimétricas

    NASA Astrophysics Data System (ADS)

    Cecatto, J. R.; Fernandes, F. C. R.; Sawant, H. S.; Madsen, F. R. H.

    2003-08-01

    Explosões solares tipo-III indicam a presença de feixes de elétrons acelerados durante "flares" solares. Sua investigação fornece informações tanto sobre os processos de aceleração de partículas quanto das características do agente causador e do local de aceleração. Explosões tipo-III decimétricas são geradas por feixes de elétrons viajando através de arcos magnéticos densos da baixa coroa solar. Os perfís temporais destes fenômenos, quando tomados com alta resolução, informam sobre os mecanismos de aceleração de partículas do feixe e o meio de transporte da energia liberada a partir da região de aceleração. Usando o Brazilian Solar Spectroscope (BSS), em operação no INPE, foram registradas dezenas de explosões tipo-III decimétricas, dentro da faixa de 2050-2250 MHz com alta resolução temporal (20 ms), em 13 de setembro de 2001, entre 13:00 e 16:10 UT. Foram selecionadas 10 explosões isoladas para uma investigação estatística detalhada de seus perfís temporais, em todos os cerca de 50 canais de freqüência. Os resultados indicam que cerca de 70% dos perfís temporais são complexos tanto durante a subida quanto descida. Os 30% restantes indicam que os perfís da subida podem ser bem representados, na maioria dos casos, por um processo não-linear e uma parcela significativa por processos lineares. Os perfís temporais da descida são dominados por um decaimento não-linear. Neste trabalho, será efetuada uma análise dos perfís temporais, tanto durante a subida quanto descida do fluxo, para as explosões selecionadas, em termos dos prováveis mecanismos de aceleração e relaxamento. 2

  7. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...) Galt, Calif., 1968, photorevised 1980; (3) Florin, Calif., 1968, photorevised 1980; (4) Elk Grove... Traction railroad at the northern boundary of section 27, T7N, R6E (Elk Grove Quadrangle); then (4) Proceed... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5)...

  8. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...) Galt, Calif., 1968, photorevised 1980; (3) Florin, Calif., 1968, photorevised 1980; (4) Elk Grove... Traction railroad at the northern boundary of section 27, T7N, R6E (Elk Grove Quadrangle); then (4) Proceed... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5)...

  9. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...) Galt, Calif., 1968, photorevised 1980; (3) Florin, Calif., 1968, photorevised 1980; (4) Elk Grove... Traction railroad at the northern boundary of section 27, T7N, R6E (Elk Grove Quadrangle); then (4) Proceed... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5)...

  10. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...) Galt, Calif., 1968, photorevised 1980; (3) Florin, Calif., 1968, photorevised 1980; (4) Elk Grove... Traction railroad at the northern boundary of section 27, T7N, R6E (Elk Grove Quadrangle); then (4) Proceed... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5)...

  11. 27 CFR 9.195 - Alta Mesa.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...) Galt, Calif., 1968, photorevised 1980; (3) Florin, Calif., 1968, photorevised 1980; (4) Elk Grove... Traction railroad at the northern boundary of section 27, T7N, R6E (Elk Grove Quadrangle); then (4) Proceed... its intersection with Dillard Road, section 6, T6N, R7E (Elk Grove Quadrangle); then (5)...

  12. Mechanisms of Oxygen Isotopic Exchange and Isotopic Evolution of 18O/16O-Depleted Periclase Zone Marbles in the Alta Aureole, Utah, USA--Insights From ion Microprobe Analysis of Calcite

    NASA Astrophysics Data System (ADS)

    Bowman, J. R.; Valley, J. W.; Kita, N.

    2007-12-01

    Infiltration of water-rich fluids during prograde metamorphism has produced significant but variable 18O/16O depletion in dolomitic marbles within the periclase (Per) zone of the Alta Stock aureole, Utah. At one location, a marble layer containing calcite (Cal) and forsterite (Fo) and an adjacent layer containing Cal + Per (replaced by brucite) + humite are depleted to δ18O values of 17.2 and 11.8 permil, respectively, from original protolith values (>25 permil). Detailed ion microprobe and millimeter-scale dental drill sampling traverses across the boundary between the two layers define a steep, coherent gradient in δ18O that is displaced a short distance (4 cm) into the higher δ18O Cal + Fo layer. Textural studies (optical, SEM) and ion microprobe analyses show that there are two isotopically and texturally distinct types of calcite at the grain scale in this traverse. Clear (well polished) calcite grains are isotopically homogeneous (within analytical uncertainty; ±0.2 to 0.45 permil, two SD) and their δ18O values confirm the basic geometry and location of the gradient defined by the dental drill samples. More poorly polished (pitted), texturally retrograde 'turbid'-looking calcite has lower and more variable δ18O values, and replaces clear calcite along fractures, cleavage traces or grain boundaries. Within the interiors of both layers there is no systematic spatial variation of δ18O in either ion microprobe or dental drill results. However there are systematic differences (up to 0.8 permil) between the ion microprobe analyses and the dental drill samples in these layer interiors, which suggest that minor amounts of retrograde calcite are incorporated at the sub-mm scale into these dental drill samples. Despite significant and pervasive depletion of 18O/16O in calcite throughout both layers during prograde metamorphism, ion microprobe analyses indicate that clear calcite grains are now isotopically homogeneous within analytical uncertainty (±0.2 to 0

  13. Radio Física Solar: fulguraciones en frecuencias submilimétricas

    NASA Astrophysics Data System (ADS)

    Giménez de Castro, C. G.

    Solar Radio observations may bring clues about the dynamics of the flaring process. Of particular interest are receivers at frequencies above 100 GHz because the emission is produced by relativistic particles. In this article we review ten years of submillimeter flare observations and its prospects for the near future. FULL TEXT IN SPANISH

  14. Observaciones interferométricas del RSN W44 en bajas frecuencias

    NASA Astrophysics Data System (ADS)

    Castelletti, G.; Dubner, G.; Brogan, C.; Kassim, N.

    Low frequencies observations in radio wavelengths are very useful to trace the energy distribution of relativistic electrons emitting synchrotron radiation and can be used to anchor the low frequency end of the intrinsic radio spectra. Furthermore, detailed low frequencies measurements can help to distinguish between thermal and nonthermal components in complex regions and thus delineate the distribution of ionized gas in the interstellar medium (ISM). In this work we discuss different aspects of the data reduction procedures at very low frequencies based on new radio observations of the supernova remnant (SNR) W44 carried out at 74 MHz and 330 MHz using the A, B, C, and D configurations of the radio interferometer Very Large Array (VLA, USA).

  15. Burbujas interestelares alrededor de estrellas masivas: observaciones en frecuencias de Radio

    NASA Astrophysics Data System (ADS)

    Cappa, C.

    Los vientos estelares de estrellas masivas interactúan con el medio interestelar circundante originando burbujas interestelares que pueden detectarse en diversas bandas del espectro electromagnético, incluyendo la banda de radio. En esta presentación se hace una puesta al día de los resultados obtenidos a partir de observaciones en el continuo de radio y en líneas espectrales en dirección de estas estructuras. Estas observaciones nos permiten estudiar el material ionizado, atómico y molecular asociado a las burbujas interestelares.

  16. Estudio de la fotoabsorción y fotoionización de la molécula de alta relevancia atmosférica no a través de los estados Rydberg con la metodología MQDO

    NASA Astrophysics Data System (ADS)

    Bustos, E.; Velasco, A. M.; Martín, I.; Lavín, C.

    Los procesos de fotoionización son de una importancia fundamental [1] y encuentran aplicación en un gran número de contextos científicos: Astrofísica [2], química de las radiaciones, biología. Los investigadores de dichos campos, necesitan de valores de fiables de secciones eficaces para la fotoionización parcial, la Fotoabsorción, así como para los procesos de fotofragmentación en amplios intervalos espectrales, particularmente en estudios de modelización [3-5]. En este trabajo se ha centrado la atención sobre el oxido nítrico, que se ha considerado apropiado y relevante por varios motivos: por el trascendental papel que representa en la física y química de la alta atmosfera [6], aparte de por estar íntimamente relacionado con los problemas de contaminación. Los procesos de recombinación disociativa [7] del NO, donde los estados Rydberg se encuentran directamente implicados, son relevantes, por ejemplo, en las regiones E y F de la ionosfera [7]. En este trabajo se estudia la fotoionización del NO desde el estado fundamental con la versión molecular del método del orbital de defecto cuántico (MQDO). Para ello se calcula el diferencial de las fuerzas de oscilador parciales que constituyen los canales de fotoionización del NO desde el estado fundamental. La continuidad del diferencial de fuerza de oscilador calculada a través del umbral de fotoionización, esto es, en las regiones del espectro discreta y del continua, se adopta como criterio de calidad la escasez de datos comparativos [8].

  17. The State Trustee Organization. ALTA Publication Number Two.

    ERIC Educational Resources Information Center

    Holden, Barbara B.

    The topic of this document is statewide organizations of and for library trustees. The reasons for such organizations are: (1) to educate individual library trustees, (2) to inform and stimulate library trustees, individually and as library boards, (3) to work with libraries to plan for interlibrary cooperation and library systems, and (4) to work…

  18. Order Denying Review -- Hadson Power 12 - Alta Vista Applicant

    EPA Pesticide Factsheets

    This document may be of assistance in applying the New Source Review (NSR) air permitting regulations including the Prevention of Significant Deterioration (PSD) requirements. This document is part of the NSR Policy and Guidance Database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

  19. COLD-SAT orbital experiment configured for Altas launch

    NASA Technical Reports Server (NTRS)

    Schuster, J. R.; Bennett, F. O.; Wachter, J. P.

    1990-01-01

    A study was done of the feasibility of conducting liquid hydrogen orbital storage, acquisition, and transfer experiments aboard a spacecraft launched by a commercial Atlas launch vehicle. Three hydrogen tanks are mated to a spacecraft bus that is similar to that used for three-axis-controlled satellites. The bus provides power, communications, and attitude control along with acceleration levels ranging from 10 exp -6 to 10 exp -4 g. At launch, all the liquid hydrogen is contained in the largest tank, which has an insulation system designed for both space operation and the short-term launch pad and ascent environment. This tank is much lighter and lower in cost than a vacuum-jacketed design, and is made possible by the experiment tanking options available due to the hydrogen-fueled Centaur upper stage of the Atlas I.

  20. Natural killer cells after altaïr mission

    NASA Astrophysics Data System (ADS)

    Konstantinova, I. V.; Rykova, M.; Meshkov, D.; Peres, C.; Husson, D.; Schmitt, D. A.

    Reduced in vitro NK cytotoxic activity have routinely been observed after both prolonged and short-term space flights. This study investigated the effects of space flight on NK cell functions, NK cell counts and the production of IL-2 and TNF by lymphocytes of French-Russian crew members. In the French cosmonaut, after 21 days space flight, the cytotoxic activity of NK cells, the capacity the NK cells to bind and lyse the individual target cells and the percentage of NK cells were decreased. In this cosmonaut a twofold reduction TNF production in cultures of lymphocytes stimulated with PMA and with the mixture of PHA and PMA was observed on the first day after landing. However, the activity of the production of TNF in 48-hour PHA-cultures of lymphocytes was unchanged and the biological activity of IL-2 was not reduced. The immunological examination did not detecte any substantial deviations from the norm in both russian cosmonauts after 197 days space flight. Various explanations for decreased cytotoxicity in cosmonauts after space flight can be proposed, and these include the defective function of NK cells and reduced numbers of circulating effector cells.

  1. COLD-SAT orbital experiment configured for Altas launch

    NASA Technical Reports Server (NTRS)

    Schuster, J. R.; Bennett, F. O.; Wachter, J. P.

    1990-01-01

    A study was done of the feasibility of conducting liquid hydrogen orbital storage, acquisition, and transfer experiments aboard a spacecraft launched by a commercial Atlas launch vehicle. Three hydrogen tanks are mated to a spacecraft bus that is similar to that used for three-axis-controlled satellites. The bus provides power, communications, and attitude control along with acceleration levels ranging from 10 exp -6 to 10 exp -4 g. At launch, all the liquid hydrogen is contained in the largest tank, which has an insulation system designed for both space operation and the short-term launch pad and ascent environment. This tank is much lighter and lower in cost than a vacuum-jacketed design, and is made possible by the experiment tanking options available due to the hydrogen-fueled Centaur upper stage of the Atlas I.

  2. Reavistamientos de Corvus corax en las tierras altas de Nicaragua

    Treesearch

    Francisco J. Muñoz; Wayne J. Arendt; Marvin A. Tórrez; Liliana Chavarría; Arlen Pinell.

    2009-01-01

    The common raven (Corvus corax) is one of the most widespread naturally occurring birds in the world. Thus, from a conservation and management perspective, it is of minimum concern. Yet, in Nicaragua, observations of this species are few and not well documented. After a lapse of almost 40 years since the last written report, we describe recent sightings from the...

  3. Formación de Estrellas de Alta Masa

    NASA Astrophysics Data System (ADS)

    Saldaño, Hugo Pablo

    2011-03-01

    En este Trabajo Especial se presenta un estudio en el infrarrojo cercano de las regiones de formacíon estelar asociadas con las fuentes IRAS 12272-6240 y IRAS 17149-3916. En un an álisis fotométrico sobre las imágenes de las regiones en los filtros J(1.25 μm), H(1.65 μm) y Ks (2.16 μm), obtenidas con el telescopio Baade (Las Campanas, Chile), se identificaron potenciales cúmulos jóvenes asociados con cada una de las fuentes IRAS y se detectaron estrellas jóvenes en formación en un amplio rango de masas (desde 0.5 a 40 M⊙). También se analizan imágenes en Bγ y H2 obtenidas con el mismo telescopio. Este Trabajo Especial contribuye a una mejor comprensión de la formación de las estrellas de gran masa.

  4. 78 FR 67349 - AltaGas Facilities (U.S.), Inc. (AltaGas); Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-12

    ... requests waiver of the requirement to remove the pipeline, as required by Article 9 of its Presidential... its environmental assessment (EA) and place it into the Commission's public record (eLibrary) for this proceeding; or issue a Notice of Schedule for Environmental Review. If a Notice of Schedule for Environmental...

  5. Nonthermal Radiation Processes in Interplanetary Plasmas

    NASA Astrophysics Data System (ADS)

    Chian, A. C. L.

    1990-11-01

    RESUMEN. En la interacci6n de haces de electrones energeticos con plasmas interplanetarios, se excitan ondas intensas de Langmuir debido a inestabilidad del haz de plasma. Las ondas Langmuir a su vez interaccio nan con fluctuaciones de densidad de baja frecuencia para producir radiaciones. Si la longitud de las ondas de Langmujr exceden las condicio nes del umbral, se puede efectuar la conversi5n de modo no lineal a on- das electromagneticas a traves de inestabilidades parametricas. As se puede excitar en un plasma inestabilidades parametricas electromagneticas impulsadas por ondas intensas de Langmuir: (1) inestabilidades de decaimiento/fusi5n electromagnetica impulsadas por una bomba de Lang- muir que viaja; (2) inestabilidades dobles electromagneticas de decai- miento/fusi5n impulsadas por dos bombas de Langrnuir directamente opues- tas; y (3) inestabilidades de dos corrientes oscilatorias electromagne- ticas impulsadas por dos bombas de Langmuir de corrientes contrarias. Se concluye que las inestabilidades parametricas electromagneticas in- ducidas por las ondas de Langmuir son las fuentes posibles de radiacio- nes no termicas en plasmas interplanetarios. ABSTRACT: Nonthermal radio emissions near the local electron plasma frequency have been detected in various regions of interplanetary plasmas: solar wind, upstream of planetary bow shock, and heliopause. Energetic electron beams accelerated by solar flares, planetary bow shocks, and the terminal shock of heliosphere provide the energy source for these radio emissions. Thus, it is expected that similar nonthermal radiation processes may be responsible for the generation of these radio emissions. As energetic electron beams interact with interplanetary plasmas, intense Langmuir waves are excited due to a beam-plasma instability. The Langmuir waves then interact with low-frequency density fluctuations to produce radiations near the local electron plasma frequency. If Langmuir waves are of sufficiently large

  6. 77 FR 38823 - Notice of Availability of the Alta East Wind Project Draft Environmental Impact Statement...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-29

    ..., wilderness characteristics, cumulative effects, and areas with high potential for renewable energy... Statement/Environmental Impact Report and Proposed California Desert Conservation Area Plan Amendment, Kern... Management Act of 1976, as amended (FLPMA), the Bureau of Land Management (BLM) and Kern County, California...

  7. Summary of Hydrologic and Geochemical Investigations of the Albion Basin, Little Cottonwood Canyon, Alta, Utah

    NASA Astrophysics Data System (ADS)

    Skalbeck, J.; Clancy, J.; Kraus, J.

    2013-12-01

    This hydrologic and geochemical investigation of the Albion Basin was initiated in August 2005 as a background study that included reviewing existing reports, publications, maps, and other available data and preparing a phased research plan. Annual field investigations have continued with the goal to evaluate watershed characteristics of the Albion Basin and provide scientific information that can be used in watershed management decisions. In August 2006, ten piezometers were installed in the Albion Basin for water level and water chemistry monitoring at three wetland areas (Albion Basin Fen, Catherine's Pass, and Collins/Sugarloaf) and in the streambed of Little Cottonwood Creek. In August 2012, a single piezometer was installed in the Patsy Marley wetland area. The August 2013 field season represents the 8th monitoring period for this investigation. Annual monitoring consists of collecting: (1) automated water levels using pressure transducers, (2) manual water levels using an electronic sounder, (3) field water parametes (temperature, pH, electrical conductivity), and (4) water samples for laboratory chemical analysis of major cations and anions. Water samples have been collected from piezometers, springs, and surface water to characterize the potential source water for the wetland areas. In 2011 and 2012, snow samples were collected for laboratory chemical analysis to characterize the water chemistry from precipitation. A reconnaissance survey of springs located in each of the wetland areas within the basin was performed during the August 2013 record general vegetation and rock type, water field water parameter measurements, and relative flow characteristics. The goal is to assess the contribution of source water for each of the wetland areas and to identify water source areas and flow paths within the basin. In general the water sample results represent calcium, magnesium bicarbonate fresh water. These results, along with the snow sample results, provide for evaluation of precipitation input to the wetlands based on water chemistry. The water chemistry results combined with the water level signatures indicate three distinct characteristics for these wetland areas. The Catherine's Pass wetland is groundwater dominant while the Albion Basin Fen area is precipitation (surface water) dominant. The wetland area at Collins/Sugarloaf is a mixture of groundwater and surface water and the wetland may persist due to perched water. Data from the new Patsy Marley area and the spring survey are still being evaluated. Spring flow data looks promising for evaluating baseflow conditions within the watershed areas. This study is instrumental for describing the uniqueness of the Albion Basin Fen, discussing the hydrologic connections of the Albion Basin Fen, and assessing effects on the Albion Basin Fen from proposed water diversions. The proposed diversions were judged to result in a permanent loss of water from the Albion Basin and would affect the natural stream and wetland environment in the Albion Basin Fen wetland study area.

  8. [Mortality among patients with pleural and peritoneal tumors in Alta Valle di Susa].

    PubMed

    Mirabelli, Dario; Cadum, Ennio

    2002-01-01

    Tremolite asbestos in rocks surfacing by natural ground erosion as well as originating from construction activities in the Upper Susa Valley (Piedmont, Italy) was recently reported. We investigated the spatial distribution of cases of pleural (ICD Rev 9 163) and peritoneal cancers (ICD Rev 9 158.8 and 158.9) in that area. Mortality and hospital discharge statistics were analyzed by municipality of residence respectively for the periods 1980-98 and 1995-99. Kernel and empirical bayesian estimators of standardized proportional mortality ratios (SPMR) were computed in circular areas of 25, 50, 75, and 100 km distance from Sauze d'Oulx. Pleural and peritoneal malignancies were found to occur in excess in this town and in the surrounding municipalities. A survey is being undertaken to identify cases, verify diagnoses, and assess occupational and environmental exposures.

  9. Estudio de Maseres Circunestelares de Monoxido de Silicio con muy alta Resolucion Espacial

    NASA Astrophysics Data System (ADS)

    Soria-Ruiz, Rebeca

    2006-03-01

    We present high-spatial and high-spectral resolution studies of SiO masers in the circumstellar envelopes of late-type stars. These masers occur in the inner layers of the CSEs, in a region dominated by the stellar pulsation, thus being good (if not the only) probes available to understand the physics in these regions. Using the NRAO Very Long Baseline Array, we have produced maps of the 28SiO v=1 and v=2 J=1-0 and J=2-1 transitions towards several AGB stars: two Mira-type (TXCam and RLeo), one OH/IR (IRC+10011) and one S-type (xCyg) stars. The 29SiO v=0 J=1-0 and J=2-1 emission has also been studied. The spatial distributions retrieved, some of them for the first time, are in clear contradiction with the predictions of the models developed to date. We suggest that spectral line overlap may explain the results obtained. This work has been conducted by Dr. Javier Alcolea Jimenez and Dr. Francisco Colomer Sanmartin, at Observatorio Astronomico Nacional (Spain). The PhD thesis manuscript, in spanish, is available at ftp://ftp.oan.es/pub/users/r.soria/TESIS-RSoria.pdf .

  10. [TOBACCO CONSUMPTION AMONG ADULTS IN MONTERREY: RELATION TO EXERCISE REGULARLY AND FAMILY].

    PubMed

    Ruiz-Juan, Francisco; Isorna-Folgar, Manuel; Ruiz-Risueño, Jorge; Vaquero-Cristóbal, Raquel

    2015-08-01

    Objetivo: determinar la relación entre práctica físico- deportiva y consumo de tabaco en adultos mexicanos en función de una serie de variables sociodemográficas y la influencia de la familia sobre estos hábitos. Métodos: 978 adultos mexicanos (483 varones y 495 mujeres) fueron entrevistados mediante cuestionario por rutas aleatorias. Se utilizó una regresión logística multinomial para calcular odds ratio (OR) e intervalo de confianza (IC = 95%). Resultados: ser hombre es un factor de riesgo en cuanto a la frecuencia y cantidad de tabaco consumido. La franja de edad en la que aumenta la probabilidad de consumir tabaco es la de 18 a 45 años, siendo el riesgo de fumar menor a medida que la edad aumenta. El riesgo de consumir tabaco se ve significativamente disminuido entre aquellos que no tienen estudios. Los que nunca han realizado ejercicio físico tienen una menor probabilidad de fumar, siendo los que la han abandonado los que con más frecuencia fuman. El contexto familiar constituye un factor de riesgo manifiesto en relación con la frecuencia de consumo de tabaco. Con respecto a la relación con el consumo de alcohol, se ha detectado que los consumidores de alcohol tienen más probabilidad de ser fumadores. Conclusiones: el consumo de tabaco en altas frecuencias y cantidades y la práctica de actividad física son conductas que están inversamente relacionadas. También se ha detectado una relación directamente proporcional entre la frecuencia y la cantidad de consumo de tabaco y alcohol, así como una gran influencia de la familia en el hábito de fumar.

  11. [Mortality associated with a diagnosis of Guillain-Barré syndrome in adults of Mexican health institutions].

    PubMed

    Domínguez-Moreno, Rogelio; Tolosa-Tort, Paulina; Patiño-Tamez, Anais; Quintero-Bauman, Alejandra; Collado-Frías, Deisy K; Miranda-Rodríguez, María G; Canela-Calderón, Obet J; Hurtado-Valadez, Pablo; de Gante-Castro, Raúl; Ortiz-Guillén, Karoll M; Estañol-Vidal, Bruno; Sentíes-Madrid, Horacio; García-Ramos, Guillermo; Cantú-Brito, Carlos; Ruiz-Sandoval, José Luis; Chiquete, Erwin

    2014-01-01

    Introduccion. El sindrome de Guillain-Barre (SGB) es una urgencia neurologica que constituye la principal causa de paralisis flacida en el mundo, y que afecta a todos los grupos etarios. Se desconocen notablemente las caracteristicas epidemiologicas esenciales del SGB en la mayor parte de los paises de America Latina. Objetivo. Determinar la mortalidad asociada con el diagnostico de SGB en altas hospitalarias efectuadas durante el año 2010 en instituciones de la Secretaria de Salud, Mexico. Pacientes y metodos. Se analizo la base de datos de altas hospitalarias de instituciones que pertenecen a la Secretaria de Salud. Se identificaron los casos de SGB mediante el codigo G61.0 de la Clasificacion Internacional de Enfermedades, 10.ª revision (CIE-10). Se excluyeron los registros de pacientes menores de 18 años y los casos sin informacion demografica completa. Resultados. Durante el año 2010 se registraron 2.634.339 altas de hospitales que pertenecen a la Secretaria de Salud. Se identifico un total de 467 hospitalizaciones por SGB en adultos (mediana de edad: 41 años; 62,1% hombres) de 121 instituciones sanitarias de los 32 estados federados de Mexico. Durante el verano y otoño se registro la mayor frecuencia de hospitalizaciones por SGB. La mediana de la estancia hospitalaria fue de 8 dias y la tasa de mortalidad hospitalaria, del 10,5%. La probabilidad de muerte se asocio directamente con la edad, sin una tendencia particular respecto al sexo, hospital de atencion o entidad federativa. Conclusiones. En 2010, la mortalidad hospitalaria por SGB en esta parte del sistema sanitario mexicano fue mas alta de la que se informa en estudios contemporaneos. Se observo una asociacion estacional con la frecuencia de hospitalizaciones por SGB.

  12. [RIT1: a novel gene associated with Noonan syndrome].

    PubMed

    Arroyo-Carrera, I; Solo de Zaldivar-Tristancho, M; Martin-Fernandez, R; Vera-Torres, M; Gonzalez de Buitrago-Amigo, J F; Botet-Rodriguez, J

    2016-10-16

    Introduccion. El sindrome de Noonan es el mas frecuente del grupo de los sindromes malformativos congenitos originados por mutaciones germinales en genes de la via RAS/MAPK, denominados genericamente RAS-opatias, uno de los grupos mas comunes de alteraciones geneticas congenitas en la practica clinica. Recientemente se han descrito mutaciones en el gen RIT1 en pacientes con sindrome de Noonan. Caso clinico. Nina de 7 anos con diagnostico clinico de sindrome de Noonan, que entre sus manifestaciones clinicas incluye miocardiopatia hipertrofica, en la que se ha identificado una mutacion de novo en heterocigosis, en RIT1, c.295T>C (p.Phe99Leu), no descrita previamente, probablemente causal. Conclusiones. RIT1 comparte homologia con otras proteinas RAS y la expresion de alelos mutantes origina un efecto de ganancia de funcion que apoya su papel causal en el sindrome de Noonan. Podemos estimar actualmente que es responsable de un 3-5% de los casos del sindrome. Estos casos con sindrome de Noonan, respecto a los que presentan mutaciones en otros genes, se caracterizan por una mayor frecuencia de alteraciones prenatales, alta frecuencia de miocardiopatia hipertrofica y menor frecuencia de talla baja y deformidad toracica. Destaca la importancia de incorporar los nuevos genes identificados en los paneles diagnosticos.

  13. Estudio multiespectral del remanente de supernova W 28

    NASA Astrophysics Data System (ADS)

    Dubner, G.; Velázquez, P.; Castelletti, G.

    Se presentan observaciones en continuo de radio con muy alta resolución angular y sensibilidad del remanente de supernova (RSN) W28. Las observaciones fueron realizadas con el interferómetro Very Large Array (Estados Unidos), en las configuraciones C y D, en 1415 y 324 MHz. Por la gran extensión de este remanente (diámetro ~ 1o), las observaciones en 1415 MHz se realizaron en modo mosaico, combinando 48 apuntamientos diferentes en una única imagen. En ambas frecuencias los datos se procesaron con el agregado de observaciones de menor resolución angular, a fin de recuperar información en todas las frecuencias espaciales y obtener estimaciones precisas de densidad de flujo. Las imágenes resultantes muestran por primera vez la presencia de extensiones con forma de arco, cuya naturaleza se investiga. Las observaciones en radio se comparan con una imagen óptica de W28, y con la emisión en rayos X, observada con el satélite ROSAT. Este remanente muestra una clara morfología híbrida, tipo cáscara en frecuencias de radio y de centro lleno en las bandas óptica y de rayos X blandos.

  14. [Expression of CD152 and CD137 on T regulatory cells in rhinitis and bronchial asthma patients].

    PubMed

    Rojas-Ramos, Enrique; Martínez-Jiménez, Norma E; Verdejo-Hernández, Billy; Vázquez, Gilberto

    2015-01-01

    Antecedentes: la rinitis alérgica y el asma bronquial son enfermedades inflamatorias cuya prevalencia ha aumentado en las últimas dos décadas. Los estudios de la respuesta inflamatoria en estas enfermedades muestran que las células T reguladoras (Treg) participan en la tolerancia inmunológica. La expresión de CTLA-4 (CD152) se asocia con la actividad funcional de esta población y la expresión de 4-1BB (CD137) tiene un papel controvertido. Objetivo: determinar la existencia de CTLA-4 y 4-1BB en las células Treg en sangre periférica de pacientes con rinitis, asma, o ambas. Material y método: estudio transversal comparativo en el que se reclutaron tres grupos de pacientes: 20 sujetos con rinitis alérgica, 17 sujetos con asma bronquial y 17 con ambos padecimientos. Se formó un grupo control de 19 sujetos sanos. Se analizó la frecuencia de células Treg en sangre periférica y la expresión de CD152 y CD137 en los diferentes grupos mediante citometría de flujo. Resultados: se encontró menor frecuencia estadísticamente significativa de células Treg (CD4+, CD25altas y FoxP3+) en los grupos de sujetos con: asma bronquial (p<0.001) y en el grupo de rinitis alérgica con asma bronquial (p<0.05) respecto del grupo de sujetos sanos. Los pacientes con asma bronquial únicamente tuvieron mayor frecuencia de células Treg que expresan CD152 (p <0.01) y CD137 (p<0.01) respecto del grupo control. Conclusiones: los sujetos con asma bronquial y rinitis alérgica y asma bronquial únicamente tienen deficiencia de Treg CD4+, CD25altas y FoxP3+ en sangre periférica y los sujetos con asma bronquial tienen mayor frecuencia de células Treg que expresan CD152 y CD137.

  15. Argument in Transition: Proceedings of the Summer Conference on Argumentation (3rd, Alta, Utah, July 28-31, 1983).

    ERIC Educational Resources Information Center

    Zarefsky, David, Ed.; And Others

    Prepared by scholars from across the United States, the more than 80 papers in this collection address new developments and recurrent problems in the theory, practice, criticism, and teaching of argumentation. The papers are organized according to 10 broad categories: argumentation theory, argumentation in special fields, political argumentation,…

  16. Emisión de altas energías de galaxias con fomación estelar activa

    NASA Astrophysics Data System (ADS)

    Kornecki, P.; Albacete Colombo, J. F.; Pellizza, L. J.; Combi, J. A.

    2017-10-01

    In recent years, the detection of star forming galaxies at GeV and TeV energies by Fermi and Cherenkov (H.E.S.S. y VERITAS) observatories, respectively, has opened a new era for the study of the cosmic-ray population of galaxies. The Fermi survey is still small, so far just five galaxies outside the Local Group have been detected. Given that there are more than one thousand of unidentified Fermi sources, we propose to increase this sample by doing a cross-correlation search of the last Fermi catalog with different galaxies catalogs. Here we report our preliminary results, and discuss the contribution of our results to the picture of cosmic-ray production in these objects.

  17. Summary of Spring Flow and Surface Water Flow at Wetland Sites in the Albion Basin, Little Cottonwood Canyon, Alta, Utah

    NASA Astrophysics Data System (ADS)

    Skalbeck, J.; MacAlister, E. A.; Potter, N. A.; Clancy, J.

    2016-12-01

    A hydrologic and geochemical investigation of the Albion Basin was initiated in August 2005 that included reviewing existing reports, publications, maps, and other available data and preparing a phased research plan. Annual field investigations have continued with the goal to evaluate watershed characteristics of the Albion Basin and provide scientific information for use in watershed management decisions. The late July 2016 field season represents the 11th monitoring period for this investigation. Annual monitoring consists of collecting: (1) automated water levels using pressure transducers, (2) manual water levels using an electronic sounder, (3) field water parameters (temperature, pH, electrical conductivity), and (4) water samples for laboratory chemical analysis of major cations and anions. Water samples have been collected from piezometers, springs, surface water, and snow to characterize the potential source water for the wetland areas. A reconnaissance survey of springs located in each of the wetland areas (Albion Basin Fen, Catherine's Pass, and Collins/Sugarloaf) within the basin was performed during the August 2013 field season. A record of general vegetation and rock type, water field water parameter measurements, and relative flow characteristics were collected at each spring location. Subsequent surveys were performed during the 2014, 2015, and 2016 field seasons. Flow rates were measured using a simple weir (PVC pipe) to fill either a 16 ounce plastic cup or 5 gallon bucket and timed with a stop watch. Measurement of inflow and outflow for each wetland are analyzed with respect to the wetland area. Results show seasonal variation of source contribution between wetland areas. The goal is to assess the contribution of source water and to identify the volume of water needed to support each wetland area. This data may be useful for future evaluation of water diversions within the basin and assessing the effects of climate change on the watershed.

  18. Demographic survey of black howler monkey (Alouatta pigra) in the Lachuá Eco-region in Alta Verapaz, Guatemala.

    PubMed

    Rosales-Meda, Marleny; Estrada, Alejandro; López, Jorge E

    2008-03-01

    Guatemala harbors three species of primates (Alouatta palliata, Alouatta pigra and Ateles geoffroyi), but the distribution and state of conservation of populations of these species are poorly documented. In the case of A. pigra, populations have been studied recently and documented in several sites in Mexico and Belize, and only in one site in Guatemala (Tikal National Park). In this study, we report first-time population data for A. pigra existing in the Lachuá Eco-region in northwestern Guatemala. Surveys were conducted between September 2002 and April 2003 in the northern portion (32 km2) of the Lachuá National Park (LLNP; 145 km2) and in a fragmented landscape north of the protected area. In this latter area we surveyed a large forest fragment (17.14 km2), "Nueve Cerros", and 26 small forest fragments that ranged in size from 0.01 to 3.9 km2. Surveys resulted in a total count of 414 howler monkeys of which 403 belonged to 80 mixed-sex groups, four were solitary males, two were solitary females and five were found in two male groups. Standardized sampling effort among sites indicated 16.7 monkeys/100 survey hours at LLNP, 35.8 individuals/100 survey hours at "Nueve Cerros" and 71.0+/-62.2 individuals/100 survey hours in the forest fragments. Mean group size varied from 4.07 individuals at LLNP to 5.19 individuals in the forest fragments. Conservation problems for the black howler population surveyed are discussed, along with possible conservation scenarios.

  19. [Do some conditions contribute to the reemergence of the Venezuelan equine encephalitis virus in the Colombian Alta Guajira?].

    PubMed

    Ferro, Cristina; De Las Salas, Jorge; González, Martha; Díaz, Alberto; Cabrera, Claudia; Flórez, Zulibeth; Duque, María Clara; Lugo, Ligia; Bello, Betsy

    2015-01-01

    In the last 18 years, epizootics of Venezuelan equine encephalitis have not occurred in places with historic epidemic register (1925-1995) in the Guajira Peninsula, Colombia. To assess if the Guajira Peninsula, Colombia, still maintains the epidemiological conditions for Venezuelan equine encephalitis virus reemergence. Research was carried out in places affected by the 1995 epidemic. We evaluated: 1) abundance and seasonal variation of vector mosquito populations; 2) availability of mammals that are potential amplifiers of the virus, and 3) knowledge among the community about the disease and its vectors. Most of the 16 mosquito species were found during the rainy season. Aedes taeniorhynchus and Psorophora confinnis showed direct relation with rainfall and temperature. In contrast, the dominant species, Deinocerites atlanticus , was always present in the collections, regardless of climatic conditions. No IgG antibodies were found in humans younger than 17 years old, goats or bovine sera. One third of those interviewed remembered the last epidemic and had basic understanding of the disease. Only 20% of the families were owners of equines, and 8% was informed of the importance of equine vaccination. Some epidemiological conditions that eventually could help epizootic Venezuelan equine encephalitis virus reemergence are maintained. However, an abrupt decrease in the number of susceptible equines was found in the area. Apparently, this new condition has not allowed the virus reemergence and is the biggest observed change.

  20. [Prevalence of vitamin d deficiency and insuffiency and associated factors in pregnant women of northern Spain].

    PubMed

    Rodríguez-Dehli, Ana Cristina; Riaño Galán, Isolina; Fernández-Somoano, Ana; Navarrete-Muñoz, Eva María; Espada, Mercedes; Vioque, Jesús; Tardón, Adonina

    2015-04-01

    Introducción y objetivos: El déficit de vitamina D durante el embarazo se ha relacionado con sucesos adversos durante la gestación y con el desarrollo infantil postnatal. En este estudio examinamos los niveles plasmáticos de vitamina D [25(OH)D3] y los factores asociados a su deficiencia e insuficiencia plasmática en embarazadas del norte de España. Material y método: Se han analizado los datos de 453 gestantes participantes en la cohorte INMA-Asturias a las que se determinó la 25(OH)D3 mediante cromatografía líquida de alta resolución. Se ha estimado la ingesta dietética de vitamina D mediante un cuestionario de frecuencia alimentaria validado. Se han estimado las prevalencias de deficiencia [25(OH)D3.

  1. Sintetizadores de síntesis digital directa

    NASA Astrophysics Data System (ADS)

    Olalde, J. C.; Perilli, D.; Larrarte, J. J.

    Se describen las características e implementación de sintetizadores de alta resolución en frecuencia, <= 2 mHz, tiempos de conmutación rápidos, submicrosegundo, con posibilidad de control de fase basados en la técnica de síntesis digital directa. La implementación se realiza a partir del circuito integrado AD7008, que incluye un oscilador controlado numéricamente y un conversor analógico digital, y en el trabajo se dan pautas para la especificación de los filtros de reconstrucción. El instrumento implementado posee un módulo basado en un microcontrolador INTEL 8752 el cual provee la posibilidad de monitoreo, indicación visual y control en forma local a partir de un teclado; y remoto a partir de un ``host" con interfases RS232 y RS 485.

  2. Velocidad radial de Blue Stragglers en cúmulos abiertos

    NASA Astrophysics Data System (ADS)

    González, J. F.; Lapasset, E.

    Se presentan observaciones espectroscópicas de 32 blue stragglers en 6 cúmulos abiertos. Un mínimo de 4 espectros por objeto fueron obtenidos en base a los cuales se determina tipo espectral, velocidad radial y velocidad de rotación proyectada. La comparación con la velocidad media de los cúmulos aseguraría una alta probabilidad de pertenencia para la mayoría de los objetos estudiados. Un análisis de variabilidad conduce a la detección de un nuevo blue straggler binario en el cúmulo NGC 6530 además de otras probables binarias. En base a la frecuencia de binaridad y a la distribución de velocidades rotacionales se discuten los probables mecanismos de formación de los blue stragglers.

  3. [Cytomegalovirus: congenital infection and clinical presentation in infants with respiratory distress syndrome].

    PubMed

    Martínez-Contreras, Angélica; Lira, Rosalía; Soria-Rodríguez, Carmen; Hori-Oshima, Sawako; Maldonado-Rodríguez, Angélica; Rojas-Montes, Othón; Ayala-Figueroa, Rafael; Estrada-Guzmán, Julia; Álvarez-Muñoz, Ma Teresa

    2015-01-01

    Introducción: el síndrome de dificultad respiratoria (SDR) es una enfermedad común multifactorial que varía del 15 al 50 % en el recién nacido (RN), y la mortalidad es de 50 %. Puede estar asociado a infecciones bacterianas y virales, una de las más frecuentes: el citomegalovirus (CMV). En el periodo neonatal la incidencia de infección por CMV es de 0.4 a 2.5 % y la seroprevalencia de 50 a 75 %; se desconoce la incidencia de infección en los RN. El objetivo fue determinar la frecuencia de infección por CMV en recién nacidos con SDR e identificar factores de riesgo asociados a infección. Métodos: el DNA-CMV fue identificado en plasma por reacción en cadena de la polimerasa (PCR) cuantitativa, y las variables maternas y neonatales que definieron el cuadro clínico fueron analizadas por regresión logística. Resultados: la frecuencia de infección por CMV en 197 RN con SDR fue de 8.6 % (IC 95 % 4.7-12.5). Las variables significativas en los RN fueron: neutropenia (p = 0.012), trombocitopenia (p = 0.021), piel marmórea (p = 0.03) y la variable materna significativa fue cervicovaginitis (p = 0.05). Conclusiones: se reporta por primera vez la frecuencia más alta de infección por CMV en RN con SDR y la asociación de varios factores de riesgo con la infección por CMV.

  4. Fine Structure in the Mm-Wavelength Spectra of the Active Region

    NASA Astrophysics Data System (ADS)

    Sawant, H. S.; Cecatto, J. R.

    1990-11-01

    RESUMEN. Faltan observaciones solares espectrosc6picas en la longitud de onda milimetrica. Hay sugerencias de que se puede superponer una fi na estructura en frecuencia a la componente-S de la regi6n solar activa, asi como a la componente del brote en las longitudes de onda milimetri- cas. Se ha desarrollado un receptor de alta sensibilidad de pasos de frecuencia que opera en el intervalo de 23-18 GHz con una resoluci6n de 1 GHz y resoluci6n de tiempo variable entre 1.2 y 96 sec, usando la an- tena de Itapetinga de 13.7-m para estudiar la estructura fina en frecuencia y tiempo. Discutimos el espectro en longitud de onda-mm en re- giones activas y su evoluci6n en el tiempo. El estudio de Ia evoluci6n en el tiempo de la regi6n activa en AR 5569 observada el 29 de junio de 1989, sugiere la existencia de estructuras finas como funci6n deltiempo. ABSTRACT. There is a lack of mm-wavelength spectroscopic solar observations. There are suggestions that a fine structure in frequency may be superimposed on the S-component of solar active region as well as on the burst component at inm-wavelengths. To study fine structure in frequency and time, a high sensitivity step frequency receiver operating in the frequency range 23-18 GHz with frequency resolution of 1 GHz and variable time resolution 1.2 to 96 sec, using 13.7 m diameter Itapetinga radome covered antenna, has been developed. Here, we discuss mm-wavelength spectra of active regions and their time evolution. Study of time evolution of an active region AR 5569 observed on 29th June, 1989 suggests existence of fine structures as a function of time. ( Ck : SUN-ACTIVITY - SUN-RADIO RADIATION

  5. Inversor Resonante de Tres Elementos L-LC con Caracteristica Cortocircuitable para Aplicaciones de Calentamiento por Induccion

    NASA Astrophysics Data System (ADS)

    Espi Huerta, Jose Miguel

    Los generadores de calentamiento por induccion son puentes inversores con carga resonante, cuya mision es basicamente crear una corriente sinusoidal de gran amplitud sobre la "bobina de caldeo", que forma parte del tanque resonante. En el interior de esta bobina se introduce la pieza que se desea calentar. EI campo magnetico creado induce corrientes superficiales (corrientes de Foucault) sobre la pieza, que producen su calentamiento. Los tanques resonantes (tambien llamados osciladores) utilizados en la actualidad son el resonante serie y el resonante paralelo. Aunque ya desde hace algun tiempo se vienen construyendo generadores de alta potencia basados en estos dos osciladores, el exito nunca ha. sido completo en ninguno de los dos casos. Tal y como se explica en la introduccion de esta memoria, los puentes inversores utilizados deben operar sobre una carga inductiva (corriente retrasada) para evitar el fenomeno de la recuperacion inversa de sus diodos y la consiguiente ruptura de los transistores. De la restriccion topologica anterior se deduce que el generador paralelo debe conmutar a frecuencias inferiores a la resonancia, y el serie a frecuencias superiores. A esta restriccion topologica hay que unir otra que es exclusiva del calentamiento por induccion: La corriente por la bobina de caldeo debe ser sinusoidal. De no ser asi, resultaria imposible disponer toda la potencia de calentamiento sobre la pieza en el espesor requerido por la aplicacion. Como consecuencia, los inversores no pueden operar por debajo de la frecuencia de resonancia del oscilador, pues en ese caso se amplifican los armonicos de orden superior de la tension/corriente de entrada situados sobre la resonancia, con la consiguiente distorsion de la corriente de salida. La conjuncion de las dos restricciones anteriores obligan al inversor paralelo a funcionar a la frecuencia de resonancia del oscilador. Esto imposibilita un control por variacion de frecuencia, regulandose la potencia desde la

  6. [PCR detection of relevant translocations in pediatric acute lymphoblastic leukemia].

    PubMed

    Guerra-Castillo, Francisco Xavier; Ramos-Cervantes, María Teresa; Rosel-Pech, Cecilia; Jiménez-Hernández, Elva; Bekker-Méndez, Vilma Carolina

    2016-01-01

    Introducción: en México, las leucemias representan el tipo de cáncer más frecuente en la población menor de 15 años con una tasa de incidencia alta cuando se compara con países desarrollados. La etiología de las leucemias puede ser desconocida, sin embargo se presentan distintos factores que pueden condicionar la enfermedad, tal es el caso de las translocaciones cromosómicas. El objetivo de este trabajo es detectar las alteraciones moleculares: TEL-AML1, MLL-AF4, BCR-ABL menor y E2A-PBX1 en los pacientes pediátricos con leucemia aguda linfoblástica. Métodos: se colectaron 91 muestras de médula ósea de enero de 2012 a marzo de 2013 de pacientes pediátricos con leucemia aguda linfoblástica del Servicio de Hematología. Se detectaron las translocaciones (TEL-AML1, MLL-AF4, BCR-ABL menor y E2A-PBX1) con técnicas moleculares de tiempo real con SYBR Green (Qiagen, Alameda, CA). Resultados: se procesaron 91 muestras, las frecuencias detectadas para cada una de las translocaciones fueron: TEL-AML1 (7.21%), E2A-PBX1 (5.15%). Las translocaciones MLL-AF4 y BCR-ABL menor no fueron detectadas en este estudio. Conclusiones: las frecuencias mostradas en este estudio están en concordancia con los datos mostrados en la literatura donde TEL-AML1 es la translocación más común encontrada en pacientes pediátricos. Es importante mencionar que E2A-PBX1 se encuentra en una frecuencia alta en países en vías de desarrollo al comparase con países desarrollados.

  7. PREVALENCE AND COSTS OF MALNUTRITION IN HOSPITALIZED DYSPHAGIC PATIENTS: A SUBANALYSIS OF THE PREDYCES STUDY.

    PubMed

    Álvarez Hernández, Julia; León Sanz, Miguel; Planas Vilá, Mercè; Araujo, Krysmarú; García de Lorenzo, Abelardo; Celaya Pérez, Sebastián

    2015-10-01

    Introducción: la disfagia y la desnutrición son condiciones que con frecuencia aparecen juntas en los pacientes hospitalizados. Objetivos: el objetivo principal de este estudio fue analizar la prevalencia de desnutrición en pacientes con disfagia incluidos en el estudio PREDyCES®, así como para determinar sus consecuencias clínicas y económicas. Métodos: se trata de un subestudio de un estudio observacional, transversal realizado en 31 hospitales de toda España. Resultados: se incluyeron 352 pacientes con disfagia. El 45,7% de los pacientes presentaron desnutrición (NRS®-2002 ≥ 3) al ingreso y el 42,2% al alta. En pacientes de edad avanzada (≥ 70 años) la prevalencia de la desnutrición fue aún mayor: 54,6% al ingreso y el 57,5% al alta. Además, la prevalencia de la desnutrición fue mayor en los ingresos urgentes frente a las programados (45,7% vs 33,3%; p.

  8. Libraries, Building for the Future. Proceedings of the Library Buildings Institute and the American Library Trustee Association (ALTA) Workshop (Detroit, Michigan, July 1-3, 1965).

    ERIC Educational Resources Information Center

    Shaw, Robert J., Ed.

    Included are the texts of all available papers given at the Institute and Workshop, as well as the presentations of the panelists and the discussions that ensued between members of the audience and the program speakers. Floor plans and similarly important illustrative materials are reproduced. The following sessions were included--(1) general…

  9. Use of mussel casts from archaeological sites as paleoecological indicators: An example from CA-MRN-254, Marin County, Alta California

    USGS Publications Warehouse

    McGann, Mary; Starratt, Scott W.; Powell, Charles L.; Bieling, David G

    2016-01-01

    Archaeological investigations at prehistoric site CA-MRN-254 at the Dominican University of California in Marin County, California, revealed evidence of Native American occupation spanning the past 1,800 years. A dominant source of food for the inhabitants in the San Francisco Bay area was the intertidal, quiet-water dwelling blue mussel (Mytilus trossulus), although rare occurrences of the open coast-dwelling California mussel (Mytilus californianus) suggest that this species was also utilized sporadically. On rare occasions, cultural horizons at this site contain abundant sediment-filled casts of the smaller mussel Modiolus sp. These casts were formed soon after death when the shells filled with sediment and were roasted along with living bivalve shellfish for consumption. Thin sections of these mussel casts display sedimentological and microbiological constituents that shed light on the paleoenvironmental conditions when they were alive. Fine-grained sediment and pelletal muds comprising these casts suggest that the mussels were collected in a low energy, inner bay environment. The rare presence of the diatoms Triceratium dubium and Thalassionema nitzschioides indicate more normal marine (35 psu) and possibly warmer conditions than presently exist in San Francisco Bay. Radiocarbon dating of charcoal associated with the mussel casts containing these diatoms correlates with a 600-year period of warming from ca. A.D. 700–1300, known as the Medieval Climatic Anomaly. Results of this mussel cast study demonstrate that they have great potential for providing paleoenvironmental information at this and other archaeological sites.

  10. Proceedings of the International Society for Terrain-Vehicle Systems Workshop on Snow Traction Mechanics, Alta, Utah, 29 January-2 February 1979.

    DTIC Science & Technology

    1981-07-01

    to vehicle performance over snow will be discussed later. The cone penetrometer , the drop cone , and the ramsonde have been developed to produce...applying the McGill vane cone (or plate) method. It is evident that the use of Pn, the nominal track pressure, for actual assessment or correlation with...work remains to be done to seek further clarification of the relationship between Pe and Pn. J ,I Table Al. Vane- cone penetrometer in undisturbed

  11. Argument and Social Practice: Proceedings of the Speech Communication Association/American Forensic Association Conference on Argumentation (4th, Alta, Utah, August 1-4, 1985).

    ERIC Educational Resources Information Center

    Cox, J. Robert, Ed.; And Others

    Prepared by scholars from four countries, the 63 papers in this collection address recent developments and recurrent problems in the theory, practice, criticism, and teaching of argumentation. Following the texts of two keynote addresses, the papers are presented according to eight broad categories: argumentation theory, historical and political…

  12. Análisis de la región de alta temperatura en las estrellas Be y estudio de sus propiedades y geometría

    NASA Astrophysics Data System (ADS)

    Torres, A. F.; Ringuelet, A. E.

    The aim of this study is to analyse the Hot Temperature Region (HTR) that surrounds the photospheres of Be stars. Consequently, we have chosen 54 Be stars of spectral types B0, B1, B2, B3, B8 and B9; the sample is representative of a considerable range of temperature. We have analysed different lines that originate in the HTR from archival IUE spectra reprocessed by the INES: He II λ1640, Si IV λλ1394, 1403 and Al III λλ1855, 1863. From the measured values, we derive several relations that provide information on the geometry and thermodynamical properties of the HTR. Our major findings can be summarised as follows: 1) The equivalent widths of the selected lines in the spectrum of the program stars persist with similar values through all v sin(i) inclinations. 2) The equivalent widths of the Si IV lines are well correlated with the kinetic energy expansion of the wind. This suggests that the dissipation of mechanical energy in the HTR is an important source of heating. 3) The He II lines formation region, which is located at the dense base of the wind, shows full spherical symmetry. 4) The formation region of Si IV lines is located in a low-density well-developed wind and it extends over very high latitudes (˜75o). 5) The Al III lines are formed in an elongated region which is the beginning of the cool envelope. The analysis followed in this work has been completely independent from any theoretical model. Consequently, these results will be useful for deciding whether the circunstellar envelope of Be stars has an ellipsoidal geometry or a disklike shape.

  13. [Multiorgan transplantation program at the Hospital de Especialidades 71, Unidad Médica de Alta Especialidad 134, Instituto Mexicano del Seguro Social in Torreon].

    PubMed

    Juárez-de-la-Cruz, Federico Javier; Barrios-Reyes, Carmen Yolanda; Cano-López-de-nava, Laura; Adalid-Sainz, Carmen

    2011-09-01

    This is the experience in a program of multiorgan transplant at the Hospital de Especialidades 71 in Torreon, Coahuila. It is a historical overview of the beginning and development of the transplant program. Describes the logistics of the study of patients for transplantation and the test to be carried out in the laboratory of histocompatibility. We analyzed the records of the patients were transplanted in the period from January 1987 until June 2011. We found 2538 in total, of which 1940 were renal (76.4%). The 53% were male and 47% female. Average age of 37 +/- 15 years. The 82% was adult population and 18% pediatric. The most frequent cause of CRF was the chronic glomerulonephritis and 15% of the patients are diabetic. 73.5% were living donor and 26.5% were deceased donor. 7% of recipients of living donor have domino transplants. The incidence of acute rejection was 7.5%. 15% of the patients had infections and 60% was urinary. The immunosuppressive scheme most widely used is tacrolimus + mycophenolate mofetil + prednisone. The overall survival of the patient was 100, 90 and 87% to the first, third and fifth year after the transplant. The overall survival of the graft was 98, 87 and 83% in the first, third and fifth years post-transplant. It has been developed a multiple organ transplant program in Torreon that currently is one of the most important in Mexico with similar results to those obtained at the international level.

  14. Beers versus STOPP criteria in polyharmacy community-dwelling older patients.

    PubMed

    Nicieza-Garcia, Maria Luisa; Salgueiro-Vázquez, Maria Esther; Jimeno-Demuth, Francisco José; Manso, Gloria

    2016-05-01

    Objetivo: Evaluar la prescripcion potencialmente inapropiada (PPI) mediante la aplicacion de los criterios Beers (version 2012) y STOPP (version 2008) en pacientes mayores, polimedicados y residentes en la comunidad. Metodos: A partir de la informacion recogida en los datos de facturacion de recetas y de las historias clinicas electronicas se selecciono una muestra de 223 pacientes de 65 o mas anos, que tomaban simultaneamente 10 o mas medicamentos/dia. Se aplicaron separadamente los criterios de Beers y STOPP y se compararon los resultados obtenidos con ambos metodos. Resultados: Un total de 141 pacientes (63,2%) presentaban al menos un criterio de Beers. Los dos criterios de Beers independientes del diagnostico observados con mas frecuencia fueron el uso de benzodiazepinas y el uso de antiinflamatorios no esteroideos no selectivos de ciclooxigenasa-2. Con respecto a los criterios de Beers considerando el diagnostico, los mas frecuentes fueron el uso de anticolinergicos en pacientes con sintomas del tracto urinario inferior o con hiperplasia benigna de prostata y el uso de benzodiazepinas, antipsicoticos, zolpidem o antihistaminicos H2, en pacientes con demencia o deterioro cognitivo. Un total de 165 (73,9%) pacientes tenian al menos una PPI segun los criterios STOPP. La duplicidad terapeutica y el uso prolongado de benzodiazepinas de vida media larga fueron los dos criterios STOPP mas comunes. Discusion: Nuestro estudio identifico una alta frecuencia de PPI en pacientes mayores, polimedicados y residentes en la comunidad. La aplicacion simultanea de los criterios de Beers y STOPP constituye una herramienta util para mejorar la prescripcion en este grupo de poblacion.

  15. [Cardiovascular risk factors in children with primary nephrotic syndrome].

    PubMed

    Alegría-Torres, Gabriela Alejandra; Aguilar-Kitsu, María Alejandra; Estrada-Loza, María Jesús; Villasís-Keever, Miguel Ángel

    2015-01-01

    Introducción: se ha propuesto que los pacientes con síndrome nefrótico (SN) tienen con mayor frecuencia factores de riesgo cardiovascular. El objetivo de este estudio fue determinar la frecuencia de factores de riesgo cardiovascular en niños con SN primario. Métodos: estudio transversal, descriptivo y prospectivo. Se incluyeron 55 pacientes con SN primario. Se evaluó la presencia de sobrepeso/obesidad, hipertensión, dislipidemia, hiperglicemia, elevación de proteína C reactiva (PCR) de alta sensibilidad y el incremento en el grosor intimo-medial carotídeo (GIM). Se analizó el tipo de SN, el tiempo de evolución, el tratamiento actual y el número de recaídas. Para el análisis estadístico se utilizó chi cuadrada y rho de Spearman. Resultados: el factor de riesgo cardiovascular más frecuente fue el incremento del GIM carotídeo (98.1 %), seguido de hipertrigliceridemia (54.4 %) y de hipercolesterolemia total (40 %). Los pacientes con SN corticosensible tuvieron menor número de factores de riesgo comparados con los corticorresistentes. Además hubo una correlación positiva de mayor tiempo de evolución y número de recaídas con el incremento de factores. Conclusiones: el 98 % de los niños con SN primario tuvieron al menos un factor de riesgo cardiovascular. Ciertas características clínicas como ser corticorresistentes y el tiempo de evolución y tratamiento parecen estar relacionadas con la presencia de un mayor número de factores de riesgo.

  16. Seric ion level and its relationship with the symptoms of premenstrual syndrome in young women.

    PubMed

    dos Santos, Larissa Almenara Silva; de Azeredo, Vilma Blondet; Eloy Chaves Barbosa, Diane; Augusta de Sá, Solange

    2013-11-01

    El objetivo del estudio fue evaluar el nivel de iones séricos y su relación con el síndrome premenstrual (PMS) Los síntomas en las mujeres jóvenes. Método: Noventa y tres voluntarios fueron monitoreados durante tres meses. La evaluación del estado nutricional se basa en el índice de masa corporal. Tres "mapas de síntomas diarios" se utilizaron para investigar la frecuencia de los síntomas de SPM. La evaluación bioquímica se realizó en el primer mes de la fase lútea. Los niveles de sodio, de potasio, de calcio, de magnesio se determinaron por métodos colorimétricos. La concentración de hemoglobina y hematocrito se determinaron por métodos convencionales. Resultados: Los síntomas como la ansiedad (1,13, 0,81, 0,66), edema (0,99, 0,51, 0,22 e), depresión (0,58, 0,36, 0,20) y la mastalgia (0,56; 0,35; 0,09) fueron los más evidentes en el ciclo menstrual de lútea y la fase folicular. Un pequeño número de voluntarios presentó hipocalemia (1,4%), hiponatremia (4,22%) y la hipernatremia (7,04%). Sin embargo, el mayor número de los voluntarios presentó menor nivel de calcio (83,09%). La frecuencia de las mujeres anémicas fue alta (24%). Se encontraron asociaciones significativas (P.

  17. [High performance of an implantable Holter monitor in the detection of concealed paroxysmal atrial fibrillation in patients with cryptogenic stroke and a suspected embolic mechanism].

    PubMed

    Rojo-Martinez, Esther; Sandín-Fuentes, María; Calleja-Sanz, Ana I; Cortijo-García, Elisa; García-Bermejo, Pablo; Ruiz-Piñero, Marina; Rubio-Sanz, Jerónimo; Arenillas-Lara, Juan F

    2013-09-16

    Introduccion. El holter implantable permite detectar fibrilacion auricular paroxistica (FAP) oculta en pacientes con ictus criptogenico, pero se desconoce que algoritmo de seleccion tiene un mayor rendimiento y la duracion optima de monitorizacion. Objetivo. Conocer la frecuencia y el tiempo hasta detectar la FAP mediante un holter implantable Reveal XT ® en pacientes con ictus criptogenico seleccionados por sospecha elevada de embolismo cerebral. Pacientes y metodos. Criterios de seleccion: ausencia de etiologia del ictus tras el estudio completo incluyendo un ecocardiograma transesofagico, monitorizacion ECG y holter de 24 horas, asi como confirmacion de oclusion aguda embolica de la arteria intracraneal por duplex transcraneal o bien alta sospecha de embolismo por caracteristicas de neuroimagen. Tras implantar el holter Reveal XT se formo a los pacientes para que emprendieran transmisiones todos los meses o ante sintomas. Se reviso la informacion online mensualmente y se realizaron visitas clinicas en las unidades de Neurologia y Cardiologia. Resultados. Se incluyeron 101 pacientes con ictus criptogenico y al menos un mes de seguimiento: edad media de 67 años, 54 mujeres (53,5%). Tiempo medio de seguimiento: 281 ± 212 dias. Se detecto FAP oculta en 34 pacientes (33,7%) y falsos positivos en 23 (22,8%). Mediana desde el implante hasta la deteccion de la arritmia: 102 dias (rango: 26-240 dias). En un 70% de los pacientes se registraron multiples episodios de FAP. El 75% de los eventos se detectaron durante los primeros seis meses de monitorizacion. Conclusiones. El algoritmo de seleccion de pacientes con ictus criptogenico segun sospecha de embolismo cerebral se asocio a una elevada frecuencia (33,7%) de FAP oculta con holter implantable. Uno de cada cuatro eventos sucedio tras los primeros seis meses de monitorizacion.

  18. [Frequency of cancer in a specialty hospital in Mexico City. Implications for the development of early detection methods].

    PubMed

    Herrera-Torre, Analy; García-Rodríguez, Francisco Mario; García, Rebeca Gil; Jiménez-Villanueva, Xicoténcatl; Hernández-Rubio, Angela; Aboharp-Hasan, Ziad

    2014-01-01

    Antecedentes: el cáncer es la segunda causa de muerte en México. El Hospital Juárez de México es una institución general de alta especialidad, por lo que la frecuencia de pacientes con cáncer atendidos en su Unidad de Oncología es una muestra representativa de la frecuencia de cáncer en el país. Objetivo: conocer la estadística de tumores diagnosticados en un hospital de tercer nivel. Material y métodos: estudio retrospectivo efectuado con base en la revisión de los expedientes guardados en los archivos de Anatomía Patológica de pacientes atendidos entre los años 2006 y 2010. Se registraron todos los casos positivos a cáncer de material obtenido mediante biopsia o pieza quirúrgica. Se agruparon por edad, sexo y sitios anatómicos. Resultados: se identificaron las 10 neoplasias más frecuentes en uno y otro sexo, los grupos de edad, y sexo más afectado. Conclusiones: la información obtenida refleja la realidad del país de población abierta no derechohabiente. En México, las mujeres padecen más cáncer que los hombres; las neoplasias de mama y tracto genital son las más frecuentes. Deben reforzarse los sistemas de detección oportuna para que la identificación de casos tempranos sea mayor en nuestra población.

  19. Manual del McVCO 1999

    USGS Publications Warehouse

    McChesney, P.J.

    1999-01-01

    El McVCO es un generador de frecuencias basado en un microcontrolador que reemplaza al oscilador controlado por voltaje (VCO) utilizado en telemetría analógica de datos sísmicas. Acepta señales de baja potencia desde un sismómetro y produce una señal subportadora modulada en frecuencia adecuada para enlaces telefónicos o vía radio a un lugar remoto de recolección de datos. La frecuencia de la subportadora y la ganancia pueden ser seleccionadas mediante un interruptor. Tiene la opción de poder operar con dos canales para la observación con ganancia alta y baja. El McVCO fue diseñado con el propósito de mejorar la telemetría analógica de las señales dentro de la Pacific Northwest Seismograph Network (PNSN) (Red Sismográfica del Noroeste del Pacífico). Su desarrollo recibió el respaldo del Programa de Geofísica de la Universidad de Washington y del "Volcano Hazards and Earthquake Hazards programs of the United States Geological Survey (USGS) (Programa de Investigaciones de Riesgos Volcánicos y Programa de Investigaciones de Riesgos Sísmicos de los EEUU). Cientos de instrumentos se han construido e instalado. Además de utilizarlo el PNSN, el McVCO es usado por el Observatorio Vulcanológico de Alaska para monitorear los volcanes aleutianos y por el USGS Volcano Disaster Assistance Program (Programa de Ayuda en las Catástrofes Volcánicas del USGS) para responder a crisis volcánicas en otros países. Este manual cubre el funcionamiento del McVCO, es una referencia técnica para aquellos que necesitan saber con más detalle cómo funciona el McVCO, y cubre una serie de temas que requieren un trato explícito o que derivan del despliegue del instrumento.

  20. [Food allergy diagnosis in patients with elimination diet history. Preliminary report].

    PubMed

    Navarrete-Rodríguez, Elsy Maureen; Del Río-Navarro, Blanca Estela; Pozo-Beltrán, César Fireth; García-Fajardo, Daniela Edith; Saucedo-Ramírez, Omar Josué; Castelán-Chávez, Enrique Emanuel

    2014-01-01

    Antecedentes: el diagnóstico de alergia alimentaria se realiza idealmente con reto doble ciego controlado con placebo; sin embargo, en muchas ocasiones sólo se basa en la historia clínica, en las pruebas cutáneas o, incluso, en la percepción de los padres. Con gran frecuencia se prescriben dietas de eliminación sin el abordaje adecuado. Objetivos: analizar los resultados de las pruebas diagnósticas de alergia alimentaria en un grupo de niños con dieta de eliminación y verificar esos estudios con la prueba de reto doble ciego. Material y método: estudio observacional, analítico, prospectivo, efectuado en un grupo de pacientes con dieta de eliminación por sospecha de alergia alimentaria. Se realizaron pruebas por punción, Prick-to-Prick y de parche a todos los pacientes y posteriormente se verificó la positividad de esas pruebas mediante reto doble ciego controlado con placebo. Resultados: se incluyeron 43 pacientes con un total de 1,935 pruebas. En el abordaje para sensibilidad inmediata y tardía no se encontró ninguna relación estadísticamente significativa entre la positividad de la prueba y la eliminación del alimento. Al momento se han realizado 50 retos, de los que 4 fueron positivos (8%). Conclusiones: la frecuencia de alergia comprobada por reto doble ciego controlado con placebo en 50 retos fue de 8% (4/50), por lo que en este reporte preliminar encontramos una alta frecuencia de eliminación de alimentos sin el sustento adecuado. Es muy importante que el diagnóstico de alergia alimentaria sea acertado y se base en el abordaje adecuado, porque la implementación de una dieta de eliminación en una población muy vulnerable, como los pacientes pediátricos, es de suma importancia y puede influir de manera negativa en su crecimiento y desarrollo.

  1. [Tight control of blood pressure after ischemic stroke is associated with nocturnal hypotension episodes].

    PubMed

    Fernandez-Moreno, M C; Castilla-Guerra, L; Lopez-Chozas, J M; Jimenez-Hernandez, M D

    2015-09-16

    Objetivo. Evaluar si un control mas estricto de la presion arterial (PA) en pacientes con ictus isquemico reciente se asocia con la presencia de episodios de hipotension nocturna (HPN). Pacientes y metodos. Se incluyeron 100 pacientes consecutivos que habian sido dados de alta por ictus isquemico en los seis meses previos. Para evaluar el buen control de la PA en estos pacientes, se utilizaron valores de la PA en consulta y monitorizacion ambulatoria de la PA de 24 horas. Resultados. Se estudiaron 63 varones y 37 mujeres; la media de edad fue de 69 ± 11 años. Se incluyeron 68 ictus lacunares y 32 no lacunares. Se observaron episodios de HPN en 59 pacientes. La hipertension clinica estuvo presente en 34 pacientes. Un patron anormal del ritmo circadiano de la PA estaba presente en 72 sujetos. Solo 18 pacientes tenian la PA dentro de limites normales. Los episodios de HPN fueron mas frecuentes en los pacientes con buen control de la PA en comparacion con los pacientes con mal control: 88,8% y 52,4%, respectivamente (p = 0,007). La presencia de episodios de HPN tambien estaba inversamente relacionada con el numero de parametros de PA alterados (p = 0,001). Conclusiones. El control estricto de la PA tras un ictus isquemico se asocia con una alta frecuencia de episodios de HPN. Es probable que una reduccion intensiva de los niveles de la PA dentro del rango de la normalidad tras un ictus isquemico pueda no ser beneficiosa, en particular en los pacientes ancianos.

  2. [Enviromental factors related to depressive disorders].

    PubMed

    Hernández-Benítez, Catalina Teresa; García-Rodríguez, Alfonso; Leal-Ugarte, Evelia; Peralta-Leal, Valeria; Durán-González, Jorge

    2014-01-01

    Introducción: debido a su alta prevalencia, la depresión mayor, episodio único (DMEU); la depresión mayor recurrente (DMR); y la distimia son consideradas un problema importante de salud pública. El objetivo de este estudio fue identificar y relacionar los factores ambientales en pacientes con DMEU, DMR y distimia. Métodos: 121 pacientes procedentes del Hospital General de Subzona del Instituto Mexicano del Seguro Social (IMSS) de San Andrés Tuxtla, Veracruz, fueron cuestionados mediante una historia clínica con las variables de riesgo. Resultados: 16 pacientes presentaron DMEU, 72 DMR y 33 distimia. En todos prevaleció el sexo femenino. Los trastornos depresivos se observaron con más frecuencia en personas de más de 40 años, casadas, con un nivel de estudios medio o bajo, provenientes de una familia disfuncional, víctimas de violencia familiar, además de ser hijos intermedios. Las comorbilidades que se presentaron fueron trastornos gastrointestinales, obesidad e hipertensión arterial. Conclusión: los principales factores de riesgo que se identificaron para desarrollar trastornos depresivos fueron: ser mujer, tener más de 40 años de edad y estar casada. Las diferencias obtenidas en este estudio respecto a otros probablemente se deban al tamaño de la muestra, los criterios de selección y el origen de la etnia.

  3. [Effect of point substitutions in the MnSOD, GPX1, and GSTP1 genes on the risk of familial and sporadic breast cancers in residents of the Altaĭ region of the Russian Federation].

    PubMed

    Ermolenko, N A; Boiarskikh, U A; Sushko, A G; Voronina, E N; Selezneva, I A; Sinkina, T V; Lazarev, A F; Petrova, V D; Filipenko, M L

    2010-12-01

    The frequencies of the polymorphic gene variants MnSOD Ala9Val, GPX1 Pro198Leu, and GSTP1 Ile105 Val were estimated in female residents of Altai krai with breast cancer. The frequency distributions of the genotypes for all genes studied in both patients and control subjects fit the Hardy-Weinberg equilibrium. The estimated frequencies of the genotypes for the studied genes in the control group did not differ from those earlier reported for Caucasoid women living in Europe. The T(rs1050450) allele of the GPX1 gene was demonstrated to protect against sporadic breast cancer (OR = 0.74 (95% CI = 0.58-0.94), p = 0.012). Carriers of the genotype combination MnSOD CC + GPX1 CC were found to have a 1.6 times higher risk of sporadic breast cancer compared to the control group (OR = 1.59 (1.05-2.41), p = 0.0258). The polymorphic loci GSTP1 (rs1695) and MnSOD (rs4880) were not found to be significantly associated with the risk of familial or sporadic breast cancer.

  4. Proceedings of the ISTVS (International Society for Terrain-Vehicle Systems) Workshop on Measurement and Evaluation of Tire Performance under Winter Conditions, Alta, Utah, 11-14 April 1983.

    DTIC Science & Technology

    1985-09-01

    J.W. Lane) .................... 99 Winter tire tests: 1980-81 (G.L. Blaisdell and W.L. Harrison) ........... 135 Some observations on tire technology from...drawbar technique with great success, but magnetic pickup mounted inside the brake with advancing tire technology found the drum. This eliminates wheel...tire D at the end of the test day result- ed in better tractive coefficients than at the beginning of the day. 151 SOME OBSERVATIONS ON TIRE

  5. [Experiences of bullying in medical residents].

    PubMed

    Ortiz-León, Silvia; Jaimes-Medrano, Aurora Leonila; Tafoya-Ramos, Silvia Aracely; Mujica-Amaya, María Luisa; Olmedo-Canchola, Víctor Hugo; Carrasco-Rojas, José Antonio

    2014-01-01

    Antecedentes: el hostigamiento y el maltrato son conductas intimidantes persistentes que se ejercen contra una persona; en la práctica médica, son aceptadas y justificadas en todos los niveles de la formación y propias de la cultura hospitalaria. Objetivo: conocer la frecuencia del acoso y algunos factores relacionados en médicos residentes de la Ciudad de México. Material y métodos: estudio longitudinal en el que participaron 260 residentes de las especialidades médicas de cirugía, medicina interna, ginecología y obstetricia y pediatría de tres hospitales generales de la Ciudad de México. Se realizaron dos evaluaciones con seis meses de diferencia utilizando el Leymann Inventory of Psychological-Terrorization (LIPT-60). Resultados: la comparación entre la primera y la segunda aplicación no mostró cambios en ninguna de las medidas de acoso. Del total de residentes, 256 (98.5%) manifestaron haber sufrido por lo menos una conducta de acoso durante los últimos seis meses, con una intensidad promedio de 1.4 (DE ± 0.5), sin diferencias entre hombres y mujeres. Las mujeres calificaron más alto en la escala de bloqueo de la comunicación que los hombres. Las conductas de acoso con promedios más altos fueron la intimidación manifiesta y el desprestigio laboral. La especialidad de ginecología y obstetricia tuvo los puntajes más elevados en todas las medidas de acoso. El hospital influyó sobre los reportes de esta conducta. Conclusiones: las formas de acoso con los puntajes mayores fueron: el demérito del trabajo, amenazas verbales, gritos o ridiculización. La alta frecuencia de acoso dentro de la formación de los médicos residentes amerita atención.

  6. [Oral anaphylaxis by ingestion of mite contaminated food in Panama City, 2011-2014].

    PubMed

    Barrera, Olga M; Murgas, Ingrid L; Bermúdez, Sergio; Miranda, Roberto J

    2015-01-01

    Antecedentes: la anafilaxia oral por ácaros, o síndrome de las panquecas, ocurre cuando individuos atópicos ingieren alimentos elaborados con harina de trigo contaminada con ácaros, lo que induce reacciones alérgicas moderadas o severas, incluso fatales. Los reportes provienen de ambientes tropicales y subtropicales, donde las condiciones para la proliferación de ácaros domésticos son favorables. Se ha encontrado una asociación importante con la hipersensibilidad a ácido acetilsalicílico (AAS)-antiinflamatorios no esteroides (AINES) y el ejercicio físico. Objetivo: documentar el estudio clínico y descriptivo de casos de anafilaxia oral por ácaros atendidos en Ciudad de Panamá durante los años 2011 a 2014. Material y método: estudio clínico descriptivo y retrospectivo, que incluyó pruebas cutáneas de punción para cinco especies de ácaros domésticos. La identificación taxonómica de los ácaros se realizó bajo microscopio y se calculó la densidad de ácaros por gramo de alimento en tres casos. Resultados: se estudiaron 10 casos compatibles con anafilaxia oral por ácaros, la panqueca fue el alimento implicado con más frecuencia. Los primeros síntomas aparecieron entre 25 y 60 minutos después de la ingestión del alimento. Todos los pacientes fueron adultos jóvenes atópicos, cuatro con hipersensibilidad a AAS-AINES. Los pacientes resultaron positivos a las pruebas cutáneas de punción para los ácaros: Blomia tropicalis, Dermatophagoides pteronyssinus y Suidasia pontifica. Tres muestras de harina de trigo estudiadas motraron altas densidades de ácaros. Conclusiones: la panqueca fue el alimento implicado con más frecuencia en los casos de anafilaxia oral por ácaros. Suidasia pontifica y Blomia tropicalis parecen ser los ácaros más importantes relacionados con este síndrome en nuestro país.

  7. VALIDITY OF A FOOD-FREQUENCY QUESTIONNAIRE FOR ESTIMATING CALCIUM INTAKE IN ADOLESCENT SWIMMERS.

    PubMed

    Julián Almárcegui, Cristina; Huybrechts, Inge; Gómez Bruton, Alejandro; Matute Llorente, Ángel; González Agüero, Alejandro; Gómez Cabello, Alba; Moreno, Luis A; Casajús, Jose A; Vicente Rodríguez, Germán

    2015-10-01

    Introducción: estimar correctamente la ingesta de calcio es crucial para conocer cómo se distribuye nutricionalmente la ingesta calórica a lo largo del día. Por lo tanto, el objetivo del presente trabajo fue validar un cuestionario de frecuencia de consumo para calcular la ingesta de calcio, mediante dos recordatorios de 24 horas, usado como método de referencia en un grupo control de adolescentes normo-activos y un grupo de adolescentes nadadores de alta competición. Metodología: la congruencia de los cuestionarios se estudio mediante correlación de Pearson y el estudio del acuerdo entre los dos métodos a nivel individual, así como la habilidad del cuestionario para clasificar a los sujetos en el mismo cuartil que los recordatorios de 24 horas. Resultados: la ingesta media diaria de calcio del grupo control fue 564,6 mg (DE 232,0) y 895,9 mg (DE 343,1) calculada mediante el recordatorio de 24 horas y el cuestionario, respectivamente (P < 0.001); y 731,9 mg (DE 299,8) y 979,8 mg (DE 408,5) en los nadadores mediante el recordatorio de 24 horas y el cuestionario, respectivamente (P < 0.001). Las correlaciones de Pearson fueron 0,52 para el grupo control y 0,47 para los nadadores después de corregir por intravariablidad. Los análisis de clasificación indicaron que el 73,7% de los controles y el 63,1% de los nadadores fueron clasificados correctamente o en la categoría contigua. El 89% de los controles y el 79% de los nadadores fueron clasificados correctamente según estuvieran por encima o por debajo de las recomendaciones de ingesta de calcio diarias (1.300 mg). Conclusiones: para ambos grupos, el cuestionario de frecuencia de consumo tiende a sobreestimar la ingesta de calcio, sin embargo demuestra ser un buen método para clasificar tanto a los sujetos de ingestas de calcio extremas, como a los sujetos que no cumplen las recomendaciones de calcio.

  8. [Profile of sensitization to allergens in children with atopic dermatitis assisting to Allergology Service of University Hospital, Nuevo Leon, Mexico].

    PubMed

    Yong-Rodríguez, Adrián; Macías-Weinmann, Alejandra; Palma-Gómez, Samuel; Arias-Cruz, Alfredo; Pérez-Vanzzini, Rafael; Gutiérrez-Mujica, José Julio; González-Díaz, Sandra Nora

    2015-01-01

    Antecedentes: la sensibilización a alergenos observada en la dermatitis atópica aumenta el riesgo del niño a padecer rinitis alérgica y asma. Los estudios recientes indican que entre mayor actividad de proteasas haya en los alergenos a los que se está sensibilizado, hay mayor defecto en la barrera cutánea y mayor gravedad de la enfermedad. Objetivos: conocer el patrón de sensibilización a los alergenos en niños con dermatitis atópica atendidos en el Servicio de Alergología del Hospital Universitario de la Universidad Autónoma de Nuevo León y conocer si estos niños tienen mayor sensibilización a los antígenos con actividad proteolítica. Material y método: estudio retrospectivo en el que revisamos los reportes de las pruebas cutáneas por punción realizadas en nuestro servicio a niños de 5 meses a 16 años de edad, con diagnóstico de dermatitis atópica, de enero de 2012 a enero de 2014. Evaluamos la frecuencia de sensibilización a aeroalergenos y alimentos, así como el tamaño de la roncha en la respuesta cutánea para cada alergeno en particular. Resultados: se incluyeron los reportes de pruebas cutáneas de 66 niños, 30 hombres y 36 mujeres. Cuarenta y seis pacientes estaban sensibilizados a aeroalergenos y 38 a alimentos. Los ácaros del polvo de casa (Dermatophagoides pteronyssinus/Dermatophagoides farinae) fueron los alergenos con mayor frecuencia de respuesta positiva en las pruebas cutáneas. De los niños con sensibilización a alimentos, sólo los niños sensibilizados a la leche de vaca, al huevo y al pescado tuvieron una roncha mayor de 6 mm de diámetro. CONCLUSIÓN: en los niños con dermatitis atópica es común la sensibilización a aeroalergenos con alta actividad de proteasas y la polisensibilización es muy común. La sensibilización a alimentos es común en estos pacientes, pero sólo un pequeño porcentaje de ellos muestra respuestas cutáneas lo suficientemente grandes para relacionarlas con gravedad de la enfermedad.

  9. ANTHROPOMETRIC PROFILE AND NUTRITIONAL INTAKE IN PATIENTS WITH EPILEPSY.

    PubMed

    de Azevedo Fernandez, Rochelly; Corrêa, Camila; Muxfeld Bianchim, Marino; Schweigert Perry, Ingrid D

    2015-08-01

    Introducción: la calidad de vida alterada es común en los pacientes con epilepsia, especialmente debido a las comorbilidades cardiovasculares, el sobrepeso y la obesidad. Objetivos: evaluar el estado nutricional de los pacientes con epilepsia en base a mediciones antropométricas y la ingesta alimentaria. Métodos: este estudio transversal involucró a 72 pacientes reclutados por conveniencia en la Clínica de Epilepsia del Hospital de Clínicas de Porto Alegre, Brasil. La muestra consistió en pacientes de ambos sexos, mayores de 18 años, que habían sido diagnosticados de epilepsia durante al menos un año. Variables investigadas: medidas antropométricas (peso y talla para la evaluación del estado nutricional y el IMC, circunferencia de la cintura para la evaluación del riesgo cardiovascular); la ingesta nutricional en base a un cuestionario de frecuencia de alimentos; nivel socioeconómico basado en los Criterios de Clasificación Económica del Brasil. Resultados: la prevalencia de sobrepeso/obesidad fue del 66,7%, y el 85,4% de las mujeres tenían un alto riesgo cardiovascular. Los pacientes presentaron una baja frecuencia de control de las crisis (41,7%), alta ingesta de carbohidratos y proteínas, así como baja ingesta de ácidos grasos mono y poliinsaturados (incluyendo ácidos grasos omega 3 y 6). No se observaron diferencias en el estado nutricional ni el consumo entre los pacientes con convulsiones controlados o no controlados. Conclusiones: los pacientes con epilepsia tienen riesgos de comorbilidades, como se evidencia por su tendencia al sobrepeso/obesidad y obesidad abdominal. Aunque el control de las crisis no parece estar relacionado con el estado nutricional y la ingesta, la presencia de tales comorbilidades apunta la necesidad de vigilancia nutricional e intervención en estos pacientes, con un enfoque especial en la redistribución de macronutrientes y en los niveles de ácidos grasos en la dieta.

  10. [Prevalence of obesity and altered lipid profile in university students].

    PubMed

    González Sandoval, Claudia Elena; Díaz Burke, Yolanda; Mendizabal-Ruiz, Adriana Patricia; Medina Díaz, Eunice; Morales, José Alejandro

    2014-02-01

    Introducción: La obesidad constituye un grave problema de salud pública por su asociación con los riesgos a desarrollar enfermedades crónicas. La dislipidemia aterogénica que acompaña con frecuencia a la obesidad también está asociada al síndrome metabólico y a las enfermedades cardiovasculares. La transición entre la adolescencia y el adulto es un periodo con modificaciones importantes en el estilo de vida que contribuyen al desarrollo de la obesidad, sin embargo es poca la atención brindada a esta etapa. La tendencia a adoptar comportamientos poco saludables durante esta transición puede incrementarse en los universitarios que llevan un estilo de vida caracterizado por la falta de tiempo para llevar una dieta saludable, haciéndolos susceptibles a desarrollar obesidad. Objetivo: Determinar la prevalencia de la obesidad y de las anormalidades en los niveles de lípidos y su relación en un grupo de universitarios. Métodos: Estudio transversal que evalúa Índice de Masa Corporal, diámetro de cintura y perfil de lípidos en universitarios con un rango de edad de 18 a 24 años. Resultados: De los 620 jóvenes estudiados, aproximadamente un tercio tienen sobrepeso u obesidad. El 86% presentó al menos una alteración en los parámetros evaluados. Los resultados del perfil lipídico muestran alta prevalencia de alteraciones leves, particularmente en los niveles de colesterol ligado a lipoproteínas de baja densidad. Conclusiones: Los jóvenes Universitarios presentan alta prevalencia de lípidos plasmáticos por encima de la norma y exceso de peso. Es necesario establecer medidas preventivas dirigidas a promover en los universitarios buenos hábitos alimenticios y mayor actividad física.

  11. [Role of anaerobic blood culture in the simultaneous blood culture taking for the diagnosis of bacteremia].

    PubMed

    Guajardo-Lara, Claudia Elena; Saldaña-Ramírez, Martha Idalia; Ayala-Gaytán, Juan Jacobo; Valdovinos-Chávez, Salvador Bruno

    2016-01-01

    Introducción: la frecuencia de la septicemia va en aumento y su mortalidad es alta; por lo tanto, su detección, la identificación del microorganismo causal y su susceptibilidad son perentorias. Metodos: se revisaron los registros de 4110 botellas de cultivo de sangre obtenida de enero de 2013 a julio de 2014 de pacientes adultos en un hospital privado de tercer nivel. Resultados: se observó crecimiento de microorganismos en 559 cultivos (12.6 %). En 2648 hemocultivos (60 %) inoculados en pares de frascos uno con medio aeróbico y el otro anaeróbico (1324 sets), se detectó crecimiento en 182 frascos a los que les fueron inoculadas las muestras tomadas al mismo tiempo a 135 pacientes (13.7 %). En 86 pares de frascos con las muestras de 54 pacientes (40 %), el crecimiento solamente se dio en el frasco aeróbico (47.5 %); en 24 pares de frascos (13.19 %) tomados a 21 pacientes (15.5 %, p < 0.05), solamente hubo crecimiento en el frasco anaeróbico. En los hemocultivos de 32 de 60 pacientes con crecimiento en ambos frascos (53 %), el crecimiento se detectó primero en el frasco anaeróbico. Conclusiones: los hemocultivos anaeróbicos tienen una utilidad baja para la detección de bacteriemias por anaerobios estrictos; no obstante, en el 15.55 % de los pacientes estuvo presente el riesgo de pasar por alto la presencia de bacteriemia, y en 53 % de los pacientes con hemocultivos positivos, el diagnóstico de bacteriemia pudo establecerse de manera más temprana, lo que permitió anticipar con mejor precisión la toma de decisiones.

  12. [Frequency of invasive fungal infections in a Mexican High-Specialty Hospital. Experience of 21 years].

    PubMed

    Méndez-Tovar, Luis Javier; Mejía-Mercado, Jessica Aline; Manzano-Gayosso, Patricia; Hernández-Hernández, Francisca; López-Martínez, Rubén; Silva-González, Israel

    2016-01-01

    Introducción: Factores como el cáncer, la infección por VIH, así como el uso de esteroides y antibióticos, incrementan el número de micosis invasivas (MI). Métodos: Para conocer la frecuencia y algunos aspectos epidemiológicos de las MI en un hospital del IMSS, se revisaron los casos probados diagnosticados en los últimos 21 años (1993-2013) en el Laboratorio de Micología Médica. Resultados: Se identificaron 472 casos, distribuidos en: 261 candidosis, 82 mucormicosis, 60 criptococosis, 43 aspergilosis y 16 histoplasmosis. La candidosis disminuyó de 74 casos en los primeros 6 años, a 48 en los cinco últimos. La localización principal fue pulmonar y el principal agente fue C. albicans. La criptococosis también disminuyó de 24 a 10 casos, principalmente fue causada por C. neoformans, aunque hubo dos casos de C. laurentii, uno de C. terreus y uno de C. unigutulatus. La mucormicosis se mantuvo constante, pero la aspergilosis se incrementó pasando de 2 casos en el primer periodo a 23 en el último. Conclusiones: Es importante que los hospitales de alta especialidad, cuenten con laboratorios de micología médica para realizar el diagnóstico de MI. Se sugiere crear un Centro Nacional de Referencia de Micosis donde se concentren los datos de estas infecciones y contribuya en la elaboración de planes de educación para la salud, prevención, diagnóstico y tratamiento de las mismas.

  13. [Characterisation of factors associated with carotid stenosis in a population at high risk].

    PubMed

    Chiquete, Erwin; Torres-Octavo, Benjamín; Cano-Nigenda, Vanessa; Valle-Rojas, Deyanira; Dominguez-Moreno, Rogelio; Tolosa-Tort, Paulina; Florez-Cardona, José Alejandro; Flores-Silva, Fernando; Reyes-Melo, Isael; Higuera-Calleja, Jesús; Garcia-Ramos, Guillermo; Cantu-Brito, Carlos

    2014-06-16

    Introduccion. La estenosis moderada a grave es la forma de enfermedad carotidea aterosclerosa menos prevalente, pero que implica un alto riesgo de ictus isquemico. Objetivo. Caracterizar los factores asociados con la estenosis carotidea moderada a grave en una poblacion de alto riesgo. Pacientes y metodos. Realizamos un analisis de los factores de riesgo tradicionales asociados a estenosis carotidea >= 50% en 533 pacientes que recibieron evaluacion mediante ultrasonograma Doppler por historia de ictus (34%), o que contaban con al menos dos de los factores de riesgo: edad >= 55 años (86%), hipertension (65%), dislipidemia (52%), obesidad (42%), diabetes (40%) o tabaquismo (40%). Resultados. La prevalencia de estenosis carotidea >= 50% fue del 7,1%, sintomatica (asociada a ictus en territorio congruente) en el 5,6%, bilateral en el 2,1% y sintomatica bilateral en el 1,5%. Un 36,8% de los pacientes presento carga moderada a grave (>= 4) de placas de ateroma (25,9%, moderada: 4-6 placas; y 10,9%, grave: >= 7 placas). Mediante analisis multivariable se identifico la edad >= 75 años, la dislipidemia y el tabaquismo como factores asociados con estenosis >= 50%, y la hipertension arterial y el tabaquismo con estenosis sintomatica. El numero de factores de riesgo se asocio fuertemente con la prevalencia de estenosis carotidea. Notablemente, ni la diabetes ni la obesidad explicaron el grado de estenosis moderada a grave. Conclusiones. Como formas de enfermedad carotidea aterosclerosa, la frecuencia de estenosis moderada a grave es menor que una carga alta de placas de ateroma. La edad avanzada, el tabaquismo, la dislipidemia y la hipertension son los principales factores tradicionales que se asocian con el grado de estenosis carotidea.

  14. [Food consumption in and around the school].

    PubMed

    Alvear-Galindo, M Guadalupe; Yamamoto-Kimura, Liria T; Morán-Álvarez, Cristina; Solís-Días, M Guadalupe; Torres-Durán, Patricia Victoria; Juárez-Oropeza, Marco Antonio; Acuña-Sánchez, M Eugenia; Ferreira-Hermosillo, Aldo

    2013-01-01

    Introducción: en México, los niños de primaria permanecen aproximadamente 4.5 horas en la escuela, por lo que fuera de ese espacio es donde consumen la mayor parte de sus alimentos. El objetivo de esta investigación fue explorar las conductas alimentarias más allá del entorno escolar que pudieran favorecer la obesidad. Métodos: estudio descriptivo de niños de una escuela primaria oficial en el Distrito Federal. Los hábitos alimentarios se conocieron por un cuestionario y las características antropométricas, por medición física. Resultados: los participantes indicaron consumir refrescos y jugos enlatados con alta frecuencia y en cantidades importantes (80 %), así como productos lácteos industrializados con alto valor calórico y bajo contenido de proteínas; ingerían pocos alimentos de origen animal; 30 % comía cuatro o cinco veces al día y 10 %, una o dos veces. Los resultados se asociaron con las características omatométricas de los niños, 37.6 % de los cuales presentó sobrepeso u obesidad y 12 %, bajo peso. Conclusiones: para la prevención de la obesidad son necesarios programas de educación que involucren a profesores, padres de familia y escolares, para obtener conductas saludables y preservar la salud.

  15. [Frailty syndrome in patients with rheumatoid arthritis].

    PubMed

    Barile-Fabris, Leonor A; Pérez-Cristobal, Mario; Merlos-López, Rosa Julia; Xibillé-Friedman, Daniel

    2016-01-01

    Introducción: la artritis reumatoide (AR) es una enfermedad inflamatoria crónica que causa daño articular progresivo, y afecta la calidad y la esperanza de vida. El síndrome de fragilidad (SF) es un precursor de limitaciones y discapacidad. La comorbilidad es un indicador de gravedad. Se buscó evaluar la frecuencia de fragilidad y comorbilidad en pacientes con AR. Métodos: se evaluaron pacientes consecutivos con AR atendidos en el departamento de Reumatología de un hospital de tercer nivel en los que fue posible aplicar los criterios para definir fragilidad según el Estudio de Salud Cardiovascular. Se registraron datos demográficos, el número de comorbilidades y la presencia de polifarmacia con un diseño observacional, descriptivo y transversal. Resultados: se analizaron 500 pacientes con AR. Fueron 453 mujeres (90.6 %). La edad promedio fue de 51.3 años y el tiempo promedio de evolución de la AR de 13.2 años. El 23.4 % cumplió con criterios para SF. El promedio de comorbilidades fue de 1.59 y las más frecuentes fueron la hipertensión arterial sistémica (25.2 %) y la obesidad (18.2 %). Los pacientes tomaban en promedio 5.81 fármacos; el 99.6 % incurría en polifarmacia y el 69.6 %, en polifarmacia mayor. Conclusiones: hubo una prevalencia muy alta de SF, mayor que la esperada en población general; asimismo, el número de comorbilidades y la presencia de polifarmacia fueron muy frecuentes. Se debe vigilar la aparición de datos clínicos de SF y comorbilidad en AR aun en sujetos jóvenes con enfermedad de corta evolución.

  16. [Risk factors related to nosocomial pneumonia in pediatric patients undergoing heart surgery].

    PubMed

    Fortanelli-Rodríguez, Rocío Elvira; Gómez-Delgado, Alejandro; Vera-Canelo, José Manuel; Alvarado-Diez, Miguel Ángel; Miranda-Novales, María Guadalupe; Furuya, María Elena Yuriko; Solórzano-Santos, Fortino; Vázquez-Rosales, José Guillermo

    2015-01-01

    Introducción: la procalcitonina (PCT) sirve para discriminar entre infección y complicaciones no infecciosas en cirugías cardiacas. Se busca describir el riesgo de neumonía nosocomial y la utilidad de la PCT en el diagnóstico de pacientes pediátricos sometidos a cirugía cardiovascular. Métodos: estudio de casos y controles anidados en una cohorte. Durante un año a todos los pacientes sometidos a cirugía cardiovascular se les hizo seguimiento diario de sus condiciones clínicas y determinación de PCT a las 48 horas de haber sido intervenidos quirúrgicamente. Se tomaron exclusivamente los pacientes sometidos a circulación extracorpórea: los casos desarrollaron neumonía según los criterios del CDC; los controles, no. Resultados: se intervinieron 188 pacientes. Desarrolló neumonía el 15 %. Fueron sometidos a circulación extracorpórea 97 pacientes, quedando 24 casos y 73 controles. El 78 % de los casos desarrolló proceso neumónico entre el segundo y el quinto día postquirúrgico. La media del tiempo quirúrgico (TQ), circulación extracorpórea (TCE), pinzamiento aórtico (TPA) y ventilación mecánica fueron mayores en los casos (p < 0.001). La frecuencia de esternotomía abierta, reintubación e infección de herida quirúrgica fue más alta en el grupo de casos (p < 0.001). Conclusiones: algunos eventos del proceso quirúrgico cardiovascular y su posterior manejo están significativamente asociados al desarrollo de neumonía nosocomial en niños.

  17. [Invasive management of trigeminal neuralgia. 8 years experience].

    PubMed

    Sandoval-Balanzario, Miguel; Álvarez-Vázquez, Leonardo; Santos-Franco, Jorge Arturo

    2015-01-01

    Introducción: la neuralgia del trigémino (NT) se caracteriza por un dolor estereotipado, repetitivo, unilateral referido como eléctrico, desencadenado por la estimulación de  ramas del nervio trigémino. Se presenta con mayor frecuencia en mujeres, 2:1 con respecto a sexo masculino. El objetivo fue conocer la eficacia del tratamiento quirúrgico de NT contra el dolor mediante las técnicas de descompresión microvascular (DMV) y microcompresión percutánea con balón (MPB). Métodos: estudio retrospectivo, en el periodo entre enero de 2005 y enero de 2013, de 73 pacientes tratados por NT. Los 60 pacientes del grupo 1 fueron tratados con DMV, y los 13 del grupo 2 con MPB. Se evaluó la presencia de dolor de los pacientes en el postoperatorio inmediato y a 1, 3 y 5 años. Resultados: se incluyeron 55 pacientes del sexo femenino y 18 hombres. La edad media de presentación de NT fue a los 55 años de edad. En el grupo 1 hubo remisión del dolor en el postoperatorio inmediato en 95 % de los casos, en 92 % al primer año, 91 % a los 3 años y 88 % a los 5 años y en el grupo 2: 85 %, 84 %, 84% y 70 % respectivamente. Conclusiones: los dos procedimientos terapéuticos redujeron el dolor de NT a largo plazo en la mayoría de los pacientes. Nuestros resultados muestran resolución alta y perdurable del dolor con escasa morbimortalidad.

  18. [The association between dietary macronutrients intake and obesity among children and adolescents; a case-control study].

    PubMed

    Martín-Calvo, Nerea; Ochoa, María Carmen; Marti, Amelia; Martínez-González, Miguel Ángel

    2013-01-01

    Introducción: La alta de prevalencia de obesidad infantil en España y sus posibles consecuencias hacen de esta enfermedad un problema prioritario de salud pública. Objetivo: Valorar, mediante un estudio epidemiológico analítico de casos y controles, la asociación entre la composición en macronutrientes de la dieta y la obesidad en una muestra de niños y adolescentes navarros de 5,5 a 18,8 años. Método: Se reclutaron 178 casos, niños y adolescentes obesos (índice de masa corporal > percentil 97) en Navarra. Los controles fueron emparejados individualmente según edad y sexo. Las medidas antropométricas fueron tomadas por personal entrenado utilizando métodos estandarizados. Se realizaron entrevistas individuales para recoger información sobre la frecuencia de consumo de alimentos mediante un cuestionario previamente validado a partir del que se calculó la ingesta de macronutrientes (hidratos de carbono, proteínas y grasas) y de los subtipos de grasas. Estos resultados se dividieron en quintiles de macronutrientes ajustados por ingesta energética total. Se realizó una regresión logística condicional para estimar odds ratios ajustadas de obesidad para cada uno de los cuatro quintiles superiores de consumo, usando el quintil inferior como referencia. Resultados: La composición de macronutrientes de la dieta era similar en casos y controles, excepto para las grasas poliinsaturadas, que se asociaron inversamente a la obesidad (p tendencia lineal < 0,01) con una odds ratio ajustada de 0,34 (IC 95%: 0,15 a 0,77) para el quinto quintil. Conclusiones: Nuestros resultados sugieren una asociación inversa entre una mayor ingesta de grasas poliinsaturadas y el riesgo de obesidad.

  19. [Viable allergenic fungi in a documentary deposit of the National Archive of Cuba].

    PubMed

    Molina-Veloso, Alian; Borrego-Alonso, Sofía F

    2017-01-01

    Antecedentes: La exposición intensa y persistente a agentes biológicos del aire interior se ha relacionado con la aparición de trastornos a la salud. Se ha establecido asociación entre las condiciones ambientales, los hongos anemófilos y los estados alérgicos. Los ambientes interiores de archivos y bibliotecas en países tropicales son un reservorio importante de propágulos fúngicos, cuyo seguimiento y control son primordiales en la prevención de enfermedades ocupacionales. Objetivo: Evaluar el grado de contaminación del aire con hongos alergénicos viables en un depósito de documen-tos que se manipulan con alta frecuencia (ambiente laboral). Métodos: El muestreo aéreo se realizó por métodos activo (biocolector) y pasivo (sedimentación en placa). Los aislados se identificaron taxonómicamente, se medieron las esporas para determinar su penetrabilidad en el tracto respiratorio humano y se evaluó su impacto en los episodios de alergia. Resultados: En concentración y diversidad, el ambiente local se comportó como un reservorio de propágulos fúngicos, lo cual evidenció riesgo para la salud del personal. Se determinó que algunas esporas pueden alcanzar el tracto respiratorio inferior, con lo que se acentúa su potencial alergénico y patogénico. Prevalecieron Aspergi-llus, Cladosporium, Penicillium y Alternaria, referidos como hongos altamente alergénicos. Conclusión: Los estudios aerobiológicos constituyen una herramienta de gran valor para el tratamiento de los pacientes con alergia a los hongos y otros trastornos que estos producen.

  20. Availability of food stores and consumption of fruit, legumes and vegetables in a Brazilian urban area.

    PubMed

    Cristine Pessoa, Milene; Loures Mendes, Larissa; Teixeira Caiaffa, Waleska; Carvalho Malta, Deborah; Velásquez-Meléndez, Gustavo

    2014-12-17

    Antecedentes: El ambiente alimentar puede tener una influencia importante en la disponibilidad y el acceso a ellos, éste desempeña un papel importante en la salud de las poblaciones. El objetivo de este estudio fue comparar el consumo de frutas, legumbres y hortalizas (FLV) de adultos y la disponibilidad de las tiendas de alimentos en el contexto del espacio socioeconómico y geográfico en el territorio de las unidades básicas de salud en una capital brasileña. Métodos: El estudio se desarrolló a partir de la información obtenida a través de la Vigilancia de Factores de Riesgo para Enfermedades no Transmisibles Prevención de Encuesta Telefónica (VIGITEL), utilizando muestras de la ciudad de Belo Horizonte en los años de 2008 a 2010. Un total de 5.611 registros fueron geo-codificados usando el código postal. Una puntuación fue creada en base a la frecuencia semanal y diario del consumo de FLV . El área de las unidades básicas de salud se utilizó como unidad vecinal. Se utilizaron los datos geo-referenciados de los comercios de venta de comida en la ciudad y el barrio. Resultados: A medida que aumentaba la renta del barrio, hubo un aumento en la distribución de los establecimientos de comida e bebidas para todas las categorías estudiadas. Se observaron las puntuaciones más altas de consumo FLV en zonas con niveles de ingresos más altos. Conclusión: La mayor concentración de tiendas de alimentos e bebidas e mayor puntuación de consumo, independientemente da calidad de los productos ofrecidos, fue observado en las áreas geográficas con mayor poder adquisitivo.

  1. [In silico analysis of the identity of lipocalin of dog, cat, horse, cow, hamster and hen. Possible role in allergic diseases].

    PubMed

    Sánchez, Andrés; Cardona, Ricardo; Sánchez, Jorge

    2016-01-01

    Antecedentes: las lipocalinas parecen explicar la reactividad cruzada entre animales como gato y perro, pero poco se ha estudiado acerca de su papel en la reactividad cruzada con otros animales y su efecto clínico. Objetivos: analizar por técnicas bioinformáticas la identidad entre lipocalinas de diferentes especies y explorar la utilidad de estas técnicas en el estudio de las alergias. Material y método: estudio in silico en el que se buscaron las secuencias de lipocalinas utilizando el programa BLAST. Las secuencias de proteínas se alinearon con el programa CLUSTAL Omega versión 1.2.1 de UniProt. Las secuencias base de los alineamientos fueron las lipocalinas de perros y gatos. La identidad entre las lipocalinas se comparó con la frecuencia de sensibilización a animales en una población de 284 pacientes alérgicos. Resultados: las secuencias mostraron identidades entre 10 y 70%. Los valores más altos se encontraron entre Can f 6-Fel d 4 (68%) y Fel d 4-Equ c 1 (68%). La identidad más baja fue con las lipocalinas purpurina y proteína de unión al retinol del gallo (menor de 20%). Observamos una relación entre el patrón de sensibilización y el grado de identidad entre las especies estudiadas. Conclusiones: a partir de los estudios bioinformáticos y los patrones de sensibilización encontrados se propone que Fel d 4 y Equ c 1 son posibles alergenos mayores para gato y caballo en la población del trópico y comparten alta reactividad cruzada con Can f 6. Debido a que estos resultados provienen de modelos predictivos, deben confirmarse con estudios in vitro e in vivo.

  2. [Referrals from primary care to a dedicated headache clinic: analysis of the first 1,000 patients].

    PubMed

    Herrero-Velazquez, Sonia; Pedraza, M Isabel; Ruiz-Pinero, Marina; Munoz, Irene; Posadas, Javier; de la Torre, Paz; Bautista, Lourdes; Guerrero-Peral, Angel L

    2014-06-01

    Introduccion. Es habitual en las consultas monograficas o unidades de cefaleas que atiendan a pacientes complejos derivados desde consultas generales de neurologia. En nuestro centro, parte de la agenda de la consulta monografica de cefaleas (CMC) se reserva a pacientes remitidos desde atencion primaria (AP) con formato de alta resolucion. Objetivos. Analizar las caracteristicas de los pacientes derivados por AP a la CMC y la adecuacion a los criterios de derivacion consensuados, y compararlos con las primeras visitas por cefalea en una consulta general de neurologia. Pacientes y metodos. Muestra de 1.000 pacientes (741 mujeres y 259 varones) en la CMC y 290 (203 mujeres y 87 varones) en la consulta general. Recogemos prospectivamente variables demograficas, uso previo de tratamientos sintomaticos o preventivos, necesidad de exploraciones complementarias y adecuacion a los criterios de derivacion. Codificamos las cefaleas de acuerdo con la segunda edicion de la Clasificacion Internacional de Cefaleas (CIC-2). Resultados. En el grupo de la CMC se codificaron 1.562 cefaleas, y en la consulta general, 444; su distribucion en los grupos de la CIC-2 era similar, y la mayoria se encuadraba en el grupo 1 (migraña). El porcentaje de pacientes que habian recibido tratamiento preventivo era mayor en la CMC. El porcentaje de derivaciones adecuadas fue alto y algo mayor en la consulta general. Conclusiones. Las caracteristicas de los pacientes derivados desde AP a una CMC en nuestro medio son similares a las previamente descritas. Estos pacientes han recibido tratamiento con mas frecuencia que los atendidos en una consulta general de neurologia.

  3. PubMed

    Izaola, Olatz; De la Fuente, Beatriz; Gómez Hoyos, Emilia; López Gómez, Juan José; Torres, Beatriz; Ortola, Ana; De Luis, Daniel A

    2017-02-01

    Objetivo: el objetivo de nuestro trabajo fue evaluar la tolerancia de una fórmula enteral con alta densidad energetica en pacientes hospitalizados en una unidad de coronarias con indicación de soporte enteral al menos durante cinco días.Métodos: estudio abierto, no comparativo, no aleatorizado, descriptivo, para evaluar la tolerancia de una fórmula enteral con alta densidad energética en pacientes ingresados en una unidad coronaria.Resultados: se incluyeron 31 pacientes con una media de edad de 67,32 ± 13,8 años y de los cuales el 66,7% eran varones. El volumen medio final prescrito de Nutrison Energy®fue de 928,5 ± 278,5 ml/día (rango: 800-1.500 ml/día). La duración media de la nutrición enteral fue de 11,2 ± 3,2 días. El aporte final promedio de calorías fue de 1.392 ± 417 cal/día, con 169,9 ± 50,9 g/día de hidratos de carbono, 53,8 ± 16,1 g/día de grasas y 55,7 ± 16,9 g/día de proteínas. Tras la administ racion existió un aumento significativo de los niveles de transferrina. Un total de 3 pacientes habían presentado algún episodio de diarrea (9,7%). El número de pacientes que presentaron al menos un episodio de residuo gástrico fue de 5 (16,1%) que no obligo en ningún caso a la suspensión de la nutrición enteral, obligando en 2 pacientes a disminuir el volumen del aporte nutricional durante 24 horas. Durante el soporte nutricional, solo en 3 pacientes fue necesario disminuir el volumen aportado el día previo de la fórmula energética. Con respecto a los vómitos, solo en 1 paciente se constató esta situación (3,2%). Ningún paciente presentó en el estudio otras complicaciones digestivas asociadas a la administración de la fórmula de nutrición enteral. Por último, no se registraron acontecimientos adversos relacionados con la fórmula administrada.Conclusiones: los resultados reflejan que una fórmula enteral con alta densidad energética es una fórmula bien tolerada con una muy baja frecuencia de s

  4. [The essence of essential tremor: neurochemical bases].

    PubMed

    Gironell, A; Marin-Lahoz, J

    2016-06-01

    Introduccion. El temblor esencial es el trastorno del movimiento mas frecuente en el adulto. Se ha considerado una enfermedad benigna, pero puede ocasionar una importante discapacidad fisica y psicosocial. El tratamiento farmacologico sigue siendo poco satisfactorio. Su etiologia, fisiopatologia y anatomia siguen sin conocerse del todo. Objetivo. El conocimiento de las bases neuroquimicas es fundamental para el desarrollo de terapias mas eficaces. Se revisan los conocimientos actuales en este campo a fin de incentivar nuevas investigaciones e ideas que permitan mejorar la comprension de la enfermedad y que fomenten el desarrollo de nuevas terapias farmacologicas. Desarrollo. Se revisan los trabajos realizados hasta la fecha en humanos y en modelos animales de neurotransmisores (acido gamma-aminobutirico, glutamato, noradrenalina, serotonina, adenosina), proteinas y otros fenomenos neuroquimicos, como los canales de calcio de tipo T en el temblor esencial. Conclusiones. Se han descrito cuatro disfunciones neuroquimicas que acontecerian basicamente en el cerebelo y el nucleo olivar inferior: alteracion del sistema gabergico, aumento del rebote postinhibitorio mediante corrientes de calcio de tipo T, disminucion de los mecanismos de inhibicion neuronal y aumento de la actividad de los neurotransmisores excitatorios. Estas disfunciones neuroquimicas comportarian un aumento de la actividad de las neuronas profundas cerebelosas con actividad oscilatoria, que se trasladaria al nucleo del talamo y a la corteza motora, y comportarian la aparicion del temblor. Son necesarios nuevos estudios para poder confirmar estas hipotesis y seguir avanzando para conseguir tratamientos farmacologicos mas eficaces para los pacientes con temblor esencial.

  5. 76 FR 35882 - Paulding Wind Farm II, LLC, et al.;

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-20

    ....] Paulding Wind Farm II, LLC, et al.; Notice of Effectiveness of Exempt Wholesale Generator Status Docket Nos. Paulding Wind Farm II LLC EG11-61-000 Macho Springs Power I, LLC EG11-63-000 Alta Wind III Owner Lessor A EG11-64-000 Alta Wind III Owner Lessor B EG11-65-000 Alta Wind III Owner Lessor C EG11-66-000 Alta...

  6. Towards MIL-STD-1553B Covert Channel Analysis

    DTIC Science & Technology

    2015-01-01

    Programmer’s Guide,” V22.9x Rev. A, May 2014. [23] Alta Data Technologies LLC, “AltaAPI Software User’s Manual,” Rev I2, April 24, 2014. [24...Handbook,” January 2014. [26] Alta Data Technologies LLC, “AltaCore-1553 MIL-STD-1553 Protocol Engine Specifications/Users Manual,” Rev G3, March 2014

  7. Longitudinal hemodynamics in acute phase of treatment with labetalol in hypertensive pregnant women to predict need for vasodilatory therapy.

    PubMed

    Stott, D; Bolten, M; Paraschiv, D; Papastefanou, I; Chambers, J B; Kametas, N A

    2017-01-01

    nifedipino. Se realizaron análisis de datos mediante logística binaria y longitudinal (modelo mixto), para crear modelos de predicción con los que pronosticar la probabilidad de la necesidad de terapia vasodilatadora en mujeres hipertensas. Los modelos de predicción se crearon a partir de datos al inicio y al cabo de 1 hora y 24 horas del tratamiento, para evaluar el valor de los parámetros hemodinámicos principales con respecto a la capacidad predictiva de la PA, la frecuencia cardíaca y las variables demográficas en estos intervalos. El 22 % de la cohorte necesitó terapia vasodilatadora adicional antes del parto. Estas mujeres tuvieron tasas más altas de hipertensión grave y neonatos más pequeños en edades gestacionales más tempranas. Las mujeres que no respondieron al tratamiento fueron con más frecuencia de raza negra, tuvieron la PA y la resistencia vascular periférica (RVP) más alta, y la frecuencia cardíaca y el gasto cardíaco (GC) más bajos al inicio del tratamiento. Aquellas que necesitaron terapia vasodilatadora mostraron un descenso inicial de la PA y la RVP, que se recuperó al cabo de 24 h, mientras que la PA y la RVP en las que respondieron al labetalol mostraron una disminución constante al cabo de 1 h y de 24 h. El volumen sistólico y el GC no disminuyeron durante la fase aguda del tratamiento en ninguno de los grupos. El mejor modelo para la predicción de la necesidad de vasodilatadores se obtuvo a las 24 h mediante la combinación de la etnia con los cambios longitudinales de la PA y la frecuencia cardíaca. El modelo alcanzó una tasa de detección del 100% para una tasa de falsos positivos del 20% y un área bajo la curva de características operativas del receptor de 0,97. CONCLUSIÓN: Los datos demográficos maternos y los cambios hemodinámicos en la fase aguda de la monoterapia con labetalol constituyen una herramienta poderosa para identificar a las pacientes embarazadas hipertensas con pocas probabilidades de que se les pueda

  8. 78 FR 21924 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-12

    ...-000. Applicants: Alta Wind III, LLC. Description: First Revised MBR Tariff to be effective 4/4/2013...: ER13-1240-000. Applicants: Alta Wind II, LLC. Description: First Revised MBR Tariff to be effective 4/4... Numbers: ER13-1241-000. Applicants: Alta Wind IV, LLC. Description: First Revised MBR Tariff to be...

  9. 75 FR 35012 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-21

    ... Exempt Wholesale Generator Status of Alta Wind I, LLC. Filed Date: 06/08/2010. Accession Number: 20100608.... Applicants: Alta Wind II, LLC. Description: Notice of Self-Certification of Exempt Wholesale Generator Status.... Description: Notice of Self-Certification of Exempt Wholesale Generator Status of Alta Wind III, LLC. Filed...

  10. Review of complementary feeding practices in Mexican children.

    PubMed

    Pantoja-Mendoza, Itzayana Y; Meléndez, Guillermo; Guevara-Cruz, Martha; Serralde-Zúñiga, Aurora E

    2014-10-19

    Antecedentes: El inicio de la alimentación complementaria temprana coincide con un aumento significativo en la prevalencia de sobrepeso y obesidad especialmente en los niños, lo cual se debe entre otras causas a los cambios en los patrones de alimentación que se han experimentado. El objetivo del estudio fue describir las prácticas de alimentación complementaria en niños mexicanos. Métodos: Se realizó una búsqueda de los estudios que evaluaron las prácticas alimentarias en menores de 2 años en México en Medline, Lilacs y de forma manual con los siguientes términos: alimentación complementaria, alimentación suplementaria, México, ablactación y destete. Se recabó la edad de inicio de la alimentación complementaria, tipo de alimento consumido, frecuencia de consumo de los alimentos y motivo por el que iniciaban la alimentación complementaria. Se realizó un análisis cualitativo de la información recolectada y los datos en las gráficas son mostrados como proporciones. Resultados: Se incluyeron 7 estudios que mostraron que los niños inician la alimentación complementaria antes de los 6 meses predominantemente con frutas, aunque también consumieron jugos industrializados, refrescos y frituras. El consumo de estos productos aumenta con el crecimiento de los niños, aunado a un bajo consumo de alimentos con proteína de alto valor biológico, especialmente las carnes rojas. Conclusiones: Los resultados de los estudios incluidos mostraron que los menores reciben alimentos con alta densidad energética, mientras que es bajo el consumo de aquellos que aportan proteína animal y hierro en particular, lo que puede contribuir a problemas de salud como sobrepeso, obesidad, desnutrición y anemia.

  11. [Validation of a clinical nutritional sucking scale].

    PubMed

    Rendón-Macías, Mario Enrique; Villasís-Keever, Miguel Ángel; del Carmen Martínez-García, María

    2016-01-01

    Introducción: la disfunción de la succión nutricia de los lactantes incide en la eficiencia de su alimentación. El objetivo fue construir y validar una escala clínica para evaluar la succión nutricia en sus componentes de succión-deglución-respiración. Métodos: se llevó a cabo en dos fases: validación de apariencia y validación psicométrica. La primera se validó por consenso de expertos. La segunda con su aplicación en 179 lactantes (153 recién nacidos sanos y 26 lactantes < seis meses de edad) y 86 lactantes con alto riesgo de alteración de la succión. Todos fueron valorados por tres evaluadores durante una alimentación. Con una escala inicial de 10 ítems se calculó la concordancia interobservador y la consistencia interna. Se determinaron los ítems más pertinentes. Cada componente de la escala se comparó con variables clínicas. Resultados: se obtuvo una escala de siete ítems, la cual mostró alta consistencia (alfa de Cronbach de 0.77) con una concordancia interobservador de 0.98. El componente de la succión se correlacionó positivamente con el volumen ingerido (Ro = 0.61); el de la deglución, con la saturación periférica (Ro = 0.24), y el de la ventilación, con la frecuencia respiratoria (Ro = 0.50). Con la escala se establecieron patrones de alteración según antecedentes de afección neurológica, estabilidad hemodinámica e inmadurez. Conclusión: esta escala es consistente y válida para la clasificación de problemas de la succión. Se requieren más estudios para evaluar su aplicación en la evaluación de terapias de estimulación oral.

  12. Effects on adolescents' lipid profile of a fitness-enhancing intervention in the school setting; the EDUFIT study.

    PubMed

    Ardoy, Daniel N; Artero, Enrique G; Ruiz, Jonatan R; Labayen, Idoia; Sjöström, Michael; Castillo, Manuel J; Ortega, Francisco B

    2013-01-01

    Objetivos: Los estudios observacionales han notificado una asociación entre la actividad física, la forma física y el perfil lipídico en la juventud. El propósito de este estudio fue analizar el efecto de una intervención basada en la escuela centrada en aumentar el número y la intensidad de las sesiones de educación física (EF) a lo largo de la semana, en el perfil lipídico de los adolescentes. Métodos: Se realizó un estudio controlado de distribución aleatoria en 67 adolescentes (12-14 2013s) del sudeste de España, en 2007. Tres clases fueron distribuidas al azar a un grupo control (GC), un grupo experimental-1 (GE1) y un grupo experimental-2 (GE2). El GC recibió las sesiones habituales de EF en España (2 sesiones semanales), el GE1 recibió 4 sesiones de EF /semana y el GE2 recibió 4 sesiones de EF /semana de alta intensidad. Los criterios de valoración principales del estudio fueron las concentraciones en ayunas de colesterol toral, lipoproteínas de densidad elevada-colesterol (HDLc), lipoproteínas de densidad baja-colesterol (LDLc) y de triglicéridos. Se ajustaron todos los análisis para el sexo, maduración sexual, asistencia y valor basal de la variable estudiada. Resultados: La intervención no afectó de forma positiva a los parámetros cardiovasculares a excepción de las LDLc que disminuyeron marginal aunque significativamente en el GE2 (-10,4 mg/dl), en comparación del GC (+4,1 mg/dl) (p = 0,04); sin embargo, no se observaron diferencias para el cociente LDLc/HDLc ratio. No se observaron efectos significativos en el GE1. Discusión: De forma global, una intervención de actividad física basada en la escuela durante 4 meses no influyó de forma sustancial en el perfil lipídico de los adolescentes. Sin embargo, los resultados sugieren que el aumentar tanto la frecuencia como la intensidad de las sesiones de EF tiene un efecto modesto sobre las LDLc en los jóvenes. Los estudios futuros que impliquen una muestra mayor e

  13. [Micronutrients intake and urinary tract tumors in Córdoba, Argentina].

    PubMed

    Román, María Dolores; Roqué, Florencia Inés; Muñoz, Sonia Edith; Andreatta, Maria Marta; Navarro, Alicia; Díaz, María del Pilar

    2013-01-01

    Introducción: Los micronutrientes contenidos en los alimentos de consumo habitual integran el modelo de red causal del cáncer aunque su evaluación conjunta es compleja debido a la interdependencia en el consumo habitual. Diversos estudios reportaron que ciertos nutrientes pueden modificar el riesgo de desarrollar tumores de vías urinarias (TVU), aunque dicha evidencia es aún limitada. Objetivo: Identificar asociaciones entre el consumo de vitaminas A, E, B6, C, fósforo, selenio y zinc procedentes de la dieta, y la presencia TVU en Córdoba, Argentina, entre 1999 y 2008, considerando la multicolinealidad entre sus consumos. Métodos: Se realizó un estudio caso-control que incluyó 129 casos con TVU confirmados histopatológicamente y 257 controles. Se administró a cada sujeto un formulario de frecuencia alimentaria previamente validado. La ingesta de vitaminas A, E, B6 y C, fósforo, selenio y zinc fueron las variables de interés, presentando alta correlación entre sí y provocando colinealidad. Por ello, fueron ajustados modelos de regresión logística múltiple y su adaptación ante la presencia de correlación vía estimación Ridge, para la obtención de los odds ratio (OR), previa inclusión de las covariables sexo, edad, índice de masa corporal (IMC), estrato socioeconómico, exposición ocupacional a carcinógenos, consumo de tabaco y consumo calórico. Resultados: Las vitaminas E y B6 evidenciaron un leve efecto protector (OR: 0,943, IC 95% 0,897-0,998 y OR: 0,730, IC 95% 0,457-1,167). El selenio resultó ligeramente promotor (OR: 1,012, IC 95% 1,001-1,023). Conclusión: Considerando la multicolinealidad es posible detectar de manera más precisa la modulación que algunos micronutrientes ejercen sobre el riesgo de TVU.

  14. Nutritional status of patients with gastrointestinal cancer receiving care in a public hospital; 2010-2011.

    PubMed

    Dias do Prado, Corina; Alvares Duarte Bonini Campos, Juliana

    2013-01-01

    Objetivo: Identificar el estado nutricional de los pacientes con cáncer gastrointestinal y verificar su asociación con características demográficas y clínicas. Métodos: Se realizó un estudio transversal, con un diseño de muestreo no probabilístico. Los participantes fueron 143 pacientes adultos con cáncer gastrointestinal, que reciben atención en el Hospital Amaral Carvalho (Jaú-SP, Brasil) entre noviembre de 2010 y octubre de 2011. Se realizó una encuesta para recoger información con el fin de caracterización demográfica y clínica. Para identificar el estado nutricional se aplico la Valoración Subjetiva Global - Generada por el Paciente Score (VSGGP score). La razón de prevalencia (RP) fue estimada. El nivel de significancia adoptado fue de 5%. Resultados: La edad media de los pacientes fue de 57,45 (DE = 9,62) AÑOs, con los estadíos III y IV de la enfermedad es la más frecuente (39,2% y 35,0%). Había 44,8% de prevalencia de la malnutrición. La persona desnutrida tenía problemas más frecuentes para comer. La estadística descriptiva y la prueba de Chi-cuadrado (< 0,001), presentaron menor deseo de comer (p < 0,001), más náuseas (p = 0,001), vómitos (p = 0,006), estreñimiento (p < 0,001) y dolor (p < 0,001) que los pacientes eutróficos y se declararon enfermos por el olor de los alimentos (p = 0,012), dificultad para tragar (p = 0,002) y la saciedad precoz (p = 0,020) com más frecuencia. En cuanto a la proporción de prevalencia, se observó una probabilidad mayor de individuos desnutridos expuestos a una porción más grande de los síntomas relacionados en la puntuación VSG-GP score. Conclusión: La alta prevalencia de desnutrición se observó en pacientes con cáncer gastrointestinal, con asociación significativa con los síntomas clínicos directamente relacionados con el proceso de alimentación.

  15. Reliability of the maximal oxygen uptake following two consecutive trials by indirect calorimetry.

    PubMed

    Hall-López, Javier Arturo; Ochoa-Martínez, Paulina Yesica; Moncada-Jiménez, José; Ocampo Méndez, Mara Alessandra; Martínez García, Issael; Martínez García, Marco Antonio

    2015-04-01

    Introducción: La evaluación del con consumo máximo de oxígeno (VO2máx) por calorimetría indirecta es el método más confiable aun sin embargo los resultados al determinar el VO2máx cuando se realizan pruebas repetidas han resultado controversiales. Objetivo: Determinar la confiabilidad del consumo máximo de oxígeno (VO2máx) obtenido mediante dos pruebas de esfuerzo consecutivas utilizando el protocolo de Bruce en sujetos sanos que descansaron 10 min entre cada prueba. Método: En el estudio participaron 6 adultos jóvenes de género masculino, físicamente activos con una edad promedio de 23,4±1,3 años, los sujetos realizaron dos pruebas de esfuerzo mediante el protocolo de Bruce y al alcanzar el VO2máx, entre la primera y la segunda prueba, se bajaron del ergometro y reposaron sentados en una silla durante 10 minutos. Resultados: Los datos obtenidos mostraron alta reproducibilidad de los valores entre las pruebas, indicado por el coeficiente de correlación producto momento de Pearson y el R cuadrado con intervalos de confianza al 95% (IC95%), la correlación del consumo máximo de oxígeno de fue VO2máx=0.907, con un R2=0.823, la frecuencia cardiaca máxima fue FCmáx=0.786, con un R2=0.618 y la tasa de ventilación y eliminación de dióxido de carbono fue VE/VCO2=0.868, con un R2=754. Conclusión: No se observaron efectos adversos durante el periodo de descanso de 10 minutos entre pruebas. En conclusión, descansar 10 minutos entre pruebas de esfuerzo máximas consecutivas utilizando el protocolo de Bruce no afecta el VO2máx en sujetos jóvenes y aparentemente sanos. Repetir una prueba máxima en una misma sesión es posible, confiable y no se presentan efectos adversos.

  16. [Choledocholithiasis and pregnancy. Hybrid laparo-endoscopic treatment in one step].

    PubMed

    Valadez-Caballero, David; González-Santamaría, Roberto; Soto-Mendoza, Héctor; Alberto Blanco-Figueroa, Jorge; Flores-Pantoja, Juan Manuel

    2014-01-01

    Antecedentes: las complicaciones asociadas con la coledocolitiasis son poco comunes durante el embarazo. Sin embargo, cuando aparecen incrementan la morbilidad y mortalidad para el feto y la madre. Caso clínico: paciente femenina de 25 años de edad, en el segundo trimestre de embarazo. El padecimiento actual lo inició cuatro días previos a su ingreso al hospital, con dolor abdominal en el hipocondrio derecho acompañado de náuseas y vómito. A las 24 horas se agregó ictericia y coluria. A la exploración física se encontró tinte ictérico, dolor en el hipocondrio derecho, sin irritación peritoneal. Útero a nivel de la cicatriz umbilical, sin actividad uterina. Los exámenes de laboratorio mostraron: elevación de bilirrubinas y transaminasas, sin leucocitosis; el ultrasonido reportó producto único vivo intrauterino, con frecuencia cardiaca de 128 latidos por minuto, vesícula biliar con múltiples litos en su interior, colédoco 10 mm y dilatación de vía biliar. Se realizó colecistectomía laparoscópica y colangiografía transoperatoria con colocación de guía transcística para canulación selectiva de la vía biliar. Durante la colangiografía endoscópica transoperatoria se extrajeron algunos litos. La evolución fue satisfactoria, toleró la dieta y fue fue dada de alta del hospital a las 48 horas. Conclusión: en el tratamiento de la coledocolitiasis y embarazo la combinación de laparoscopia y colangiografía endoscópica terapéutica en un solo tiempo es eficaz porque disminuye el riesgo de complicaciones asociadas con la canulación de la vía biliar.

  17. Dietary patterns of young adolescents in urban areas of northeast Brazil.

    PubMed

    de Morais, Célia Márcia Medeiros; Pinheiro, Liana Galvão Bacurau; Lima, Severina Carla Vieira Cunha; Lyra, Clelia Oliveira; de Sena Evangelista, Karine Cavalcanti Mauricio; Lima, Kenio Costa; Pedrosa, Lucia Fatima Campos

    2013-11-01

    Introducción: Estudios nacionales de evolución temporal encuentran que la tendencia del consumo alimentario se asocia con aumento de la prevalencia de las enfermedades crónicas. Objetivos: Caracterizar los hábitos alimentarios de los adolescentes en un área urbana del Noreste de Brasil, relacionándolos con los marcadores dietéticos saludables. Métodos: Estudio transversal con adolescentes (n=430) de las escuelas públicas de Natal-RN, Brasil. El consumo alimentario se evaluó mediante dos recordatorios 24h. La técnica de Análisis de Componentes Principales fue utilizada para derivar patrones dietéticos, de acuerdo con: alimentos en gramos (g), la energía en Kcal y la fibra en gramos, lo que resulta, respectivamente, en 3 componentes principales distintos: 7, 8 y 4 (varianza acumulada >70%; cargas factoriales >0,4). La asociación entre las variables independientes y los escores de los factores de todos los componentes obtenidos, se determinó por la razón de prevalencia (IC 95%). Resultados: Los patrones dietéticos fueron: el (1) Sistema Alimentario Tradicional puro representó el primero componente de los modelos; el (2) Sistema Alimentario Combinado y de riesgo reveló marcadores de alimentación no saludables, debido a la alta frecuencia de azucares refinados, grasas saturadas y sal; y el (3) Sistema Alimentario Modificado fue identificado en el modelo de las fibras, el patrón 1 de nuevo fue observado en este patrón. Las asociaciones observadas, en particular del patrón SATm, distinguen por sexo, edad y estado nutricional. Conclusiones: Los patrones dietéticos 1 y 3 se caracterizaron por la preservación de las prácticas regionales de alimentos, muy saludables, desde el punto de vista de la prevención de las enfermedades crónicas, mientras que el 2 representó alerta y riesgo para la salud. Los hallazgos pueden subvencionar Políticas de Atención a la Salud para infancia y adolescencia en carácter intersectorial.

  18. UNDERNUTRITION, SERUM VITAMIN B12, FOLIC ACID AND DEPRESSIVE SYMPTOMS IN OLDER ADULTS.

    PubMed

    Brito Noronha, Mafalda; Almeida Cunha, Nathalie; Agra Araújo, Daniela; Flamínio Abrunhosa, Sofia; Nunes Rocha, Ada; Freitas Amaral, Teresa

    2015-07-01

    Antecedentes: la cuestión del posible vínculo entre la desnutrición y los síntomas depresivos, considerando el efecto de las deficiencias de vitamina B12 y de folato, es de importancia práctica porque estas son potencialmente prevenibles y tratables. Este estudio tiene como objetivo evaluar si la desnutrición está relacionada con los síntomas depresivos, teniendo en cuenta el efecto de los niveles plasmáticos de vitamina B12 y de folato. Método: un estudio transversal se llevó a cabo en una muestra de 84 adultos mayores que viven en hogares de cuidado. Se obtuvieron datos sobre el estado nutricional utilizando Mini-Nutritional Assessment, los niveles séricos de ácido fólico y vitamina B12, la capacidad cognitiva, la dependencia funcional, y/o los síntomas de comportamiento depresivo. Los síntomas de depresión se midieron utilizando la versión de 20 ítems de la Escala de Depresión del Centro de Estudios Epidemiológicos. Resultados: cincuenta y tres adultos mayores estaban en riesgo de depresión (63,1%). De ellos, el 34% estaban en riesgo de desnutrición. Aunque se encontró una alta frecuencia de adultos mayores con bajos niveles plasmáticos de vitamina B12 (42,9%) y niveles más bajos de ácido fólico (5,9%), no se encontraron diferencias significativas en relación con la existencia de síntomas depresivos. En el análisis multivariable se observó un aumento en el riesgo de depresión entre los participantes con riesgo nutricional OR = 3,47 (1,05 a 11,46), mientras tener bajos niveles de ácido fólico y vitamina B12 no se asociaron con el riesgo de depresión. Conclusión: entre los adultos mayores desnutridos se observó un aumento en el riesgo de depresión, independientemente del ácido fólico y del estado de la vitamina B12. Estos resultados ponen de manifiesto la necesidad de implementar estrategias preventivas, especialmente dirigidas a los adultos mayores que viven en hogares de cuidado.

  19. [Not Available].

    PubMed

    Viñuela García, Manuel; Vera Ibáñez, Antonio; Colomer Poveda, David; Márquez Sánchez, Gonzalo; Romero Arenas, Salvador

    2016-06-30

    Introducción: actualmente los programas de entrenamiento interválicos de alta intensidad parecen ser una forma de optimizar el tiempo, provocando cambios en la composición corporal debido a la activación de diferentes mecanismos hormonales y metabólicos.Objetivo: observar el efecto de cuatro semanas de entrenamiento de esprints repetidos basados en la prueba de Wingate sobre la potencia y la composición corporal en adultos jóvenes.Métodos: los participantes (22,4 ± 1,8 años) fueron asignados aleatoriamente a un grupo experimental o a un grupo control. Antes de comenzar y al acabar el periodo experimental, a los sujetos se les realizó una densitometría de cuerpo completo y una prueba de Wingate. El grupo experimental realizó 12 sesiones de esprints repetidos, realizando de 3 a 6 esprints de 30 segundos con un tiempo de recuperación de 4 minutos. El grupo control continuó con su rutina diaria y no se le aplicó ningún tipo de intervención.Resultados: en el grupo experimental, la potencia media y máxima incrementó un 9,4-16,5% (p < 0,001). Además, disminuyó la masa grasa total un 8,1% (p < 0,028) y la grasa abdominal un 10,0% (p < 0,038). El grupo control no sufrió cambios en ninguna de las variables estudiadas.Conclusiones: cuatro semanas de entrenamiento de esprints repetidos basados en la prueba de Wingate con un volumen específico de ~3 minutos por sesión y una frecuencia de 3 sesiones por semana, muestra mejoras estadísticamente significativas en la potencia máxima y media. Además, provoca cambios en la composición corporal, principalmente en la masa grasa total y de la zona abdominal.

  20. [Exploratory study of dietary intake and prevalence of vitamin D deficiency in women ≥ 65 years old living in their family home or in public homes of Buenos Aires city, Argentina].

    PubMed

    Brito, Graciela Mabel; Mastaglia, Silvina Rosana; Goedelmann, Celeste; Seijo, Mariana; Somoza, Julia; Oliveri, Beatriz

    2013-01-01

    El estado nutricional y factores socioambientales influyen sobre la salud y calidad de vida del adulto mayor. Ingestas inadecuadas de proteínas, calcio y vitamina D afectan la salud ósea. Objetivos: 1) Evaluar el aporte de energía, proteínas, calcio y vitamina D en mujeres ≥65 años; 2) Analizar según el lugar de residencia: hogar familiar (HF) o residencias semicautivas (RSC); 3) Evaluar la relación entre ingesta y parámetros bioquímicos. Población: 44 mujeres ambulatorias y clínicamente sanas de (X ± DE) 75 ± 7 años, índice de masa corporal 28 ± 4 kg/m2. Métodos: 1) Cuestionarios de frecuencia de consumo de alimentos, exposición solar y nivel socioeconómico. 2) Laboratorio: En suero: 25-hidroxivitamina D (25OHD), crosslaps (CTX), calcio (Cas), fósforo y fosfatasa alcalina ósea e Índice calcio/creatinina (Cau/Cru) en orina de 2 h. Resultados: El grupo total presentó ingestas inferiores a las recomendadas excepto en proteínas, con déficit mayor en RSC. El 88 % presentó deficiencia de vitamina D (25OHD < 20 ng/ml). Se halló correlación positiva entre 25OHD e ingesta de vitamina D (r = 0,46; p < 0,007) y correlación negativa entre 25OHD y CTX en aquellas con niveles < 15 ng/ml (r = -0,51; p < 0,03). Los niveles de 25OHD, Cas y Cau/Cru fueron mayores en HF que RSC. Conclusión: La alta prevalencia de déficit de vitamina D, ingesta inadecuada de calcio y vitamina D en mujeres añosas constituye un factor de riesgo para la salud ósea. Se requieren programas de educación alimentaria y eventual suplementación con vitamina D enfatizados en grupos de mayor riesgo como RSC.

  1. Calibración del retardo ionosférico en observaciones astrométricas y geodésicas a partir de observaciones GPS

    NASA Astrophysics Data System (ADS)

    Brunini, C.; Kleusberg, A.; Arias, E. F.; de Biasi, M. S.

    Los parámetros astrométricos y geodésicos de precisión se determinan hoy mediante la observación con técnicas espaciales (VLBI, GPS y LSR). Las técnicas VLBI y GPS operan en la banda de microondas y en ella la ionósfera terrestre es dispersiva. Las señales que provienen de las radiofuentes y de los satélites atraviesan la ionósfera, donde el índice de refracción difiere de la unidad en una cantidad que es proporcional a la densidad de electrones libres e inversamente proporcional al cuadrado de la frecuencia de la onda portadora. Actualmente el International GPS Service for Geodynamics (IGS) mantiene operacional una red global integrada por más de 50 estaciones equipadas con receptores GPS de alta performance; las observaciones diarias son accesibles a los usuarios mediante ftp. La posibilidad de utilizar estas observaciones en un monitoreo continuo de la ionósfera fue señalada por diversos autores, razón por la cual en los últimos años se ha invertido un significativo esfuerzo en la producción de mapas ionosféricos regionales y globales. En el presente trabajo se utilizan 28 estaciones cuyas observaciones mapean la mayor parte de la ionósfera global. Los resultados obtenidos demuestran la posibilidad de obtener mapas ionosféricos globales con una resolución de medio día y con una precisión de (1.5 nseg (rms)). Dichos mapas proveen valores medios globales para el intervalo ajustado. Los residuos del ajuste por mínimos cuadrados constituyen una señal a partir de la cual pueden estudiarse mejor las variaciones geográficas de la ionósfera y las componentes estadísticas de su variación temporal.

  2. Spirituality and Cultural Identification Among Latino and Non-Latino College Students.

    PubMed

    Campesino, Maureen; Belyea, Michael; Schwartz, Gary

    2009-01-01

    Latinos en ambas medidas de perspectivas espirituales. Medidas de comportamiento auto-reportadas, como la frecuencia de oración, también estuvieron más altas en el grupo Latino. La identificación con la cultura Latina fue el único vaticinador de las calificaciones de la EPEL. Los resultados de este estudio indican que la espiritualidad entre Latinos tiene significados específicos al contexto del grupo cultural. Estas conclusiones tienen implicaciones para las investigaciones de enfermería que involucran la conceptualización y medida de la espiritualidad entre grupos multiétnicos.

  3. Spirituality and Cultural Identification Among Latino and Non-Latino College Students

    PubMed Central

    Campesino, Maureen; Belyea, Michael; Schwartz, Gary

    2010-01-01

    no Latinos en ambas medidas de perspectivas espirituales. Medidas de comportamiento auto-reportadas, como la frecuencia de oración, también estuvieron más altas en el grupo Latino. La identificación con la cultura Latina fue el único vaticinador de las calificaciones de la EPEL. Los resultados de este estudio indican que la espiritualidad entre Latinos tiene significados específicos al contexto del grupo cultural. Estas conclusiones tienen implicaciones para las investigaciones de enfermería que involucran la conceptualización y medida de la espiritualidad entre grupos multiétnicos. PMID:20165566

  4. Alternative options for prescribing physical activity among obese children and adolescents: brisk walking supported by an exergaming platform.

    PubMed

    Cebolla i Martí, Ausias; Álvarez-Pitti, Julio Carlos; Guixeres Provinciale, Jaime; Lisón, Juan Francisco; Baños Rivera, Rosa

    2014-09-12

    Introducción: La inactividad de los niños se ha identificado como un problema importante de salud pública. La generalización del sedentarismo está directamente relacionada con el aumento de la obesidad, por ello, el tratamiento de la obesidad infantil se basa en la intervención en estilos de vida siendo el aumento de actividad física uno de los objetivos principales. Los videojuegos activos podrían ser útiles para incrementar la actividad física, pero aún sería necesaria más investigación en este campo. Este estudio analiza los efectos de un videojuego activo que implica marcha rápida sobre el esfuerzo percibido, la auto-eficacia, las expectativas positivas y la satisfacción de un grupo de niños obesos y se compara con la respuesta de un grupo de niños normopeso. Se registraron también variables fisiológicas como la frecuencia cardiaca, el consumo de oxígeno y el gasto metabólico. Método: Una muestra de 42 niños fue estudiada. Los jóvenes fueron distribuidos de forma aleatoria en las dos opciones de ejercicio, marcha rápida en tapiz rodante con o sin el apoyo del videojuego activo (Wii-Fit). Resultados: Los niños obesos tuvieron puntuaciones significativamente más altas que los normopeso en las expectativas y la satisfacción que les producía la marcha rápida con apoyo del videojuego activo, pero en cambio no hubo diferencias significativas en cuanto a la auto-eficacia, el esfuerzo percibido o en las variables fisiológicas. Conclusiones: Estos resultados sugieren que esta plataforma de videojuego activo podría ser una herramienta útil para facilitar la práctica de la marcha rápida en niños obesos, como parte de una intervención para tratar la obesidad.

  5. [Frequency, clinical evolution and prognosis of toxic megacolon].

    PubMed

    Magallón-Tapia, Marcos; Ceniceros, Rodrigo Alberto; Arenas-Osuna, Jesús; Juarez-Leal, Cinthia Lizeth; Peralta-Amaro, Ana Lilia

    2015-01-01

    Introducción: el megacolon tóxico (MT) es una complicación potencialmente mortal de la colitis infl amatoria, isquémica e infecciosa. Usualmente se relaciona con la colitis ulcerosa inespecífica y la colitis de Crohn. Recientemente, se ha observado un repunte de la colitis pseudomembranosa como causa del MT. El objetivo fue describir la frecuencia, evolución clínica y pronóstico de los pacientes con MT.Métodos: estudio retrospectivo de enero de 2009 a enero de 2014 se hospitalizaron 1500 pacientes en el departamento de Coloproctología. De estos pacientes, se incluyeron a 13 de ellos con diagnóstico de MT de acuerdo a los criterios de Jalan y corroborados por cirugía. Se utilizó estadística descriptiva.Resultados: se estudiaron 13 pacientes con MT. Las enfermedades más frecuentemente asociadas al MT fueron: colitis ulcerosa inespecífica, colitis pseudomembranosa y colitis neutropénica, enfermedad de Crohn y colitis isquémica. En el 84.6 % se realizó colectomía subtotal más ileostomía terminal; hemicolectomía derecha extendida con ileostomía más fístula mucosa en el 7.7 %, y hemicolectomía derecha extendida con ileostomía más bolsa de Hartmann en el 7.7 %. La mortalidad fue del 61.5 %. La prevalencia en los 5 años fue de 13/1500 pacientes (0.86 %).Conclusiones: la prevalencia del MT es baja, con alta mortalidad. El diagnóstico y tratamiento oportunos puede mejorar el mal pronóstico de estos pacientes.

  6. Analysis of the discrepancies identified during medication reconciliation on patient admission in cardiology units: a descriptive study.

    PubMed

    Lombardi, Natália Fracaro; Mendes, Antonio Eduardo Matoso; Lucchetta, Rosa Camila; Reis, Wálleri Christini Torelli; Fávero, Maria Luiza Drechsel; Correr, Cassyano Januário

    2016-08-15

    ão são reincorporados ao tratamento dos pacientes, podendo repercutir em consequências clínicas importantes. este estudio observacional tuvo como objetivo describir discrepancias encontradas en la realización de la conciliación medicamentosa de pacientes admitidos en unidades de cardiología de un hospital de gran porte. la historia de medicación de los pacientes fue recolectada dentro de 48h después de la admisión, y las discrepancias, identificadas como intencionales o no intencionales, fueron clasificadas como: omisión, duplicidad, dosis, frecuencia, intervalo y vía. la mayoría de los pacientes incluidos pertenecía al sexo femenino (58,0%), con edad promedio de 59 años, y con índice de comorbilidad de Charlson entre 1 y 3 (75,5% de los casos). De las 117 discrepancias encontradas, 50,4% fueron no intencionales. De estas, 61,0% fueron de omisión, 18,6% de dosis, 18,6% de intervalo y 1,7% de vía de administración. el estudio muestra la alta prevalencia de discrepancias, principalmente de omisión, siendo casi mitad de ellas no intencionales. Ese dato nos indica el número de medicamentos que no son reincorporados al tratamiento de los pacientes, lo que puede repercutir en consecuencias clínicas importantes.

  7. Bulimia nerviosa

    MedlinePlus

    ... para orinar con frecuencia. Por lo general, la autoestima de las mujeres con bulimia está muy ligada ... biología de una persona, su imagen corporal y autoestima, sus experiencias sociales, antecedentes de salud familiares y ...

  8. Association of Cytokine Candidate Genes with Severity of Pain and Co-Occurring Symptoms in Breast Cancer Patients Receiving Chemotherapy

    DTIC Science & Technology

    2012-10-01

    1, 236 breast cancer patients were enrolled across the three research sites (UCSF, Alta Bates Summit Medical Center, and El Camino Hospital), and...Precise screening procedures vary by site, and typically, at El Camino and Alta Bates, nurses or physicians are required to verify participant...from the study after enrollment. Complete data was collected for 236 breast cancer patients, recruited from UCSF (N=174), Alta Bates (N=37), and El

  9. Performance of the Self Referencing Interferometer in the Presence of Simulated Deep Turbulence and Noise Effects

    DTIC Science & Technology

    2013-12-01

    beams before interference. Signal beams have Rytov number of 0.044. ........17 Figure 7. Apogee Imaging Systems ALTA U260 imaging system used in...ratio shown for a variety of Rytov numbers and SNRs. ........................10 Table 2. ALTA U260 imaging system specifications...experimental set-up is the ALTA U260 manufactured by Apogee Imaging Systems. This camera is specifically designed for low noise and high dynamic range for the

  10. Serum aluminum levels in dialysis patients after sclerotherapy of internal hemorrhoids with aluminum potassium sulfate and tannic acid.

    PubMed

    Tsunoda, Akira; Nakagi, Masafumi; Kano, Nobuyasu; Mizutani, Masahiko; Yamaguchi, Kenji

    2014-12-01

    Aluminum potassium sulfate and tannic acid (ALTA) is an effective sclerosing agent for internal hemorrhoids. However, it is contraindicated for patients with chronic renal failure on dialysis, because the aluminum in ALTA can cause aluminum encephalopathy when it is not excreted effectively. We conducted this study to measure the serum aluminum concentrations and observe for symptoms relating to aluminum encephalopathy in dialysis patients after ALTA therapy. Ten dialysis patients underwent ALTA therapy for hemorrhoids. We measured their serum aluminum concentrations and observed them for possible symptoms of aluminum encephalopathy. The total injection volume of ALTA solution was 31 mL (24-37). The median serum aluminum concentration before ALTA therapy was 9 μg/L, which increased to 741, 377, and 103 μg/L, respectively, 1 h, 1 day, and 1 week after ALTA therapy. These levels decreased rapidly, to 33 μg/L by 1 month and 11 μg/L by 3 months after ALTA therapy. No patient suffered symptoms related to aluminum encephalopathy. Although the aluminum concentrations increased temporarily after ALTA therapy, dialysis patients with levels below 150 μg/L by 1 week and thereafter are considered to be at low risk of the development of aluminum encephalopathy.

  11. [Association between the frequency and duration, but not the intensity, of headache with mechanical hypersensitivity and the health of patients with tension-type headache].

    PubMed

    Palacios-Cena, M; Fernandez-Munoz, J J; Cigaran-Mendez, M; Moron-Verdasco, A; Fernandez-de-Las-Penas, C

    2015-03-16

    Introduccion. La asociacion entre las variables clinicas de la cefalea y otras variables neurofisiologicas o de salud es controvertida. Objetivo. Determinar la asociacion de la frecuencia, duracion e intensidad del dolor con la sensibilidad mecanica craneocervical, considerando el efecto de otras variables de salud y fisicas. Pacientes y metodos. Se incluyeron 72 pacientes con cefalea de tension. Se mantuvo un diario mensual para determinar la frecuencia, duracion e intensidad del dolor. Se calcularon los umbrales de dolor a la presion (UDP) y la sensibilidad a la palpacion sobre la region craneocervical, calidad de vida (Short Form-36), discapacidad, depresion y movilidad cervical. Se introdujeron todas las variables en modelos de regresion logistica jerarquica para determinar las interacciones. Resultados. Se encontraron correlaciones entre la frecuencia y duracion de la cefalea, pero no la intensidad, con el resto de variables. El analisis de regresion mostro que la combinacion del UDP sobre el temporal, dolor corporal, edad y rol fisico explicaba el 22,3% de la varianza de la frecuencia, mientras que la combinacion de salud general, UDP sobre el trapecio superior y frecuencia del dolor explicaba el 20% de la varianza de la duracion (p < 0,001). Conclusiones. Este estudio ha encontrado que la frecuencia y la duracion de la cefalea, pero no la intensidad, se encuentran asociadas con variables neurofisiologicas, como el UDP sobre el cuello/cabeza o la percepcion de dolor generalizado en la cefalea tensional. Otras variables, como la edad, el rol fisico y la salud general tambien mostraron una asociacion con la frecuencia y la duracion de la cefalea.

  12. 77 FR 34373 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-11

    ... following exempt wholesale generator filings: Docket Numbers: EG12-70-000. Applicants: AltaGas Renewable Energy Colorado LLC. Description: Notice of EWG Self-Certification of AltaGas Renewable Energy Colorado...: ER12-1834-001. Applicants: Vermont Electric Power Company, Inc. Description: Amendment to True...

  13. Using Web-Based Conferencing in Post-Secondary Instruction.

    ERIC Educational Resources Information Center

    Bichelmeyer, B. A.; Kiggins, Elizabeth A.

    This paper highlights features, uses, and training issues related to AltaVista Forums, a World Wide Web-based conferencing tool. An overview of the features of AltaVista Forums is provided; highlights include asynchronous online discussions, chats, document attachments, URL posting, a calendar feature, and mail-to listings. Pricing and system…

  14. 76 FR 41817 - Notice of Intent To Prepare a Joint Environmental Impact Statement and Environmental Impact...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-15

    ... Environmental Impact Report for the Proposed Alta East Wind Project, and Possible Land Use Plan Amendment, Kern... for the Alta East Wind Project (Project), a 300-megawatt (MW) wind farm. By this notice BLM and Kern... land laws, including the Mining Law of 1872, as amended, but not from leasing under the mineral leasing...

  15. [Health education focusing on hygiene, sexuality and drug addiction for street children, 11-14 years of age].

    PubMed

    Brum, Z de P; Pereira, M A

    1996-01-01

    This study consists of a narration of a work in Health Education (an essential model for academic practice) with adolescents at a school in Cruz Alta-RS "Cruz Alta University", using a progressist pedagogy with low income boys and girls group to focus sexuality, hygiene and drugs. These children were aged between 11 and 14.

  16. Impact of Less Invasive Treatments Including Sclerotherapy With a New Agent and Hemorrhoidopexy for Prolapsing Internal Hemorrhoids

    PubMed Central

    Tokunaga, Yukihiko; Sasaki, Hirokazu

    2013-01-01

    Conventional hemorrhoidectomy is applied for the treatment of prolapsing internal hemorrhoids. Recently, less-invasive treatments such as sclerotherapy using aluminum potassium sulphate/tannic acid (ALTA) and a procedure for prolapse and hemorrhoids (PPH) have been introduced. We compared the results of sclerotherapy with ALTA and an improved type of PPH03 with those of hemorrhoidectomy. Between January 2006 and March 2009, we performed hemorrhoidectomy in 464 patients, ALTA in 940 patients, and PPH in 148 patients with second- and third-degree internal hemorrhoids according to the Goligher's classification. The volume of ALTA injected into a hemorrhoid was 7.3 ± 2.2 (mean ± SD) mL. The duration of the operation was significantly shorter in ALTA (13 ± 2 minutes) than in hemorrhoidectomy (43 ± 5 minutes) or PPH (32 ± 12 minutes). Postoperative pain, requiring intravenous pain medications, occurred in 65 cases (14%) in hemorrhoidectomy, in 16 cases (1.7%) in ALTA, and in 1 case (0.7%) in PPH. The disappearance rates of prolapse were 100% in hemorrhoidectomy, 96% in ALTA, and 98.6% in PPH. ALTA can be performed on an outpatient basis without any severe pain or complication, and PPH is a useful alternative treatment with less pain. Less-invasive treatments are beneficial when performed with care to avoid complications. PMID:23971772

  17. 76 FR 43318 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-20

    ... on Tuesday, August 02, 2011. Docket Numbers: ER11-2206-001. Applicants: Alta Wind V, LLC. Description: Alta Wind V, LLC, Notice of Non-Material Change in Status. Filed Date: 07/13/2011. Accession Number... WDT SERV AG SCE-GBU 2782 W. Edison Porterville, CA Roof Top Solor Project to be effective...

  18. 77 FR 74652 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Combined Notice of Filings 1 Take notice that the Commission received the...; ER10-2605-004. Applicants: Agua Caliente Solar, LLC, Alta Wind VII, LLC, Alta Wind IX, LLC, Topaz Solar...

  19. Combined Spectroscopic and Interferometric (NPOI) Observations of the Be Star o Cassiopeiae

    DTIC Science & Technology

    2010-01-01

    orbitales de este sistema SB1 implican una función de masa muy alta de alrededor de una masa solar. Esto implica una masa muy alta de la estrella...caracteŕısticas de este sistema binario peculiar. ABSTRACT The analysis of radial velocities of the Be star o Cas from spectra taken between 1992 and

  20. 76 FR 80356 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-23

    ... Numbers: EC12-50-000 Applicants: Alta Wind VIII, LLC, BAIF U.S. Renewable Power Holdings LLC Description... Power Act and Request for Expedited Action of Alta Wind VIII, LLC, et al. Filed Date: 12/14/11 Accession...: ISO New England Inc. submits tariff filing per 35.13(a)(2)(iii: Load Reconstitution for...

  1. Impact of less invasive treatments including sclerotherapy with a new agent and hemorrhoidopexy for prolapsing internal hemorrhoids.

    PubMed

    Tokunaga, Yukihiko; Sasaki, Hirokazu

    2013-01-01

    Conventional hemorrhoidectomy is applied for the treatment of prolapsing internal hemorrhoids. Recently, less-invasive treatments such as sclerotherapy using aluminum potassium sulphate/tannic acid (ALTA) and a procedure for prolapse and hemorrhoids (PPH) have been introduced. We compared the results of sclerotherapy with ALTA and an improved type of PPH03 with those of hemorrhoidectomy. Between January 2006 and March 2009, we performed hemorrhoidectomy in 464 patients, ALTA in 940 patients, and PPH in 148 patients with second- and third-degree internal hemorrhoids according to the Goligher's classification. The volume of ALTA injected into a hemorrhoid was 7.3 ± 2.2 (mean ± SD) mL. The duration of the operation was significantly shorter in ALTA (13 ± 2 minutes) than in hemorrhoidectomy (43 ± 5 minutes) or PPH (32 ± 12 minutes). Postoperative pain, requiring intravenous pain medications, occurred in 65 cases (14%) in hemorrhoidectomy, in 16 cases (1.7%) in ALTA, and in 1 case (0.7%) in PPH. The disappearance rates of prolapse were 100% in hemorrhoidectomy, 96% in ALTA, and 98.6% in PPH. ALTA can be performed on an outpatient basis without any severe pain or complication, and PPH is a useful alternative treatment with less pain. Less-invasive treatments are beneficial when performed with care to avoid complications.

  2. Student Projects in Cosmic Ray Detection

    ERIC Educational Resources Information Center

    Brouwer, W.; Pinfold, J.; Soluk, R.; McDonough, B.; Pasek, V.; Bao-shan, Zheng

    2009-01-01

    The Alberta Large-area Time-coincidence Array (ALTA) study has been in existence for about 10 years under the direction of Jim Pinfold of the Centre for Particle Physics at the University of Alberta. The purpose of the ALTA project is to involve Alberta high schools, and primarily their physics classes, to assist in the detection of the presence…

  3. Student Projects in Cosmic Ray Detection

    ERIC Educational Resources Information Center

    Brouwer, W.; Pinfold, J.; Soluk, R.; McDonough, B.; Pasek, V.; Bao-shan, Zheng

    2009-01-01

    The Alberta Large-area Time-coincidence Array (ALTA) study has been in existence for about 10 years under the direction of Jim Pinfold of the Centre for Particle Physics at the University of Alberta. The purpose of the ALTA project is to involve Alberta high schools, and primarily their physics classes, to assist in the detection of the presence…

  4. Manchester Triage System: main flowcharts, discriminators and outcomes of a pediatric emergency care.

    PubMed

    Amthauer, Camila; Cunha, Maria Luzia Chollopetz da

    2016-08-29

    ,5%). Houve prevalência da categoria de risco urgente (43,6%). O principal fluxograma utilizado nos atendimentos foi pais preocupados (22,4%) e o discriminador mais prevalente foi evento recente (15,3%). O desfecho de internação hospitalar ocorreu em 10,4% dos atendimentos realizados na emergência pediátrica, entretanto 61,8% dos atendimentos necessitaram permanecer em observação e/ou ficar sob os cuidados da equipe de saúde na emergência pediátrica. pais preocupados foi o principal fluxograma utilizado e evento recente o discriminador mais prevalente, constando-se os desfechos de hospitalização e de permanencia em observação na emergência pediátrica, antes da alta para o domicílio. caracterizar la atención recibida por calificación de riesgo por el sistema de triaje de Manchester, identificando los datos demográficos (edad, sexo), principales organigramas, discriminadores y los resultados en la emergencia pediátrica. estudio cuantitativo transversal. Los datos sobre la clasificación de riesgo se obtuvieron a través de una búsqueda de los datos de registro informático de los registros médicos de los pacientes tratados en la emergencia pediátrica en el período de un año. Para el análisis se utilizó la estadística descriptiva con frecuencias absolutas y relativas. se llevaron a cabo 10.921 consultas en urgencias pediátricas, en su mayoría hombres (54,4%), con edades comprendidas entre 29 días y dos años (44,5%). Hubo una prevalencia de la categoría de riesgo urgente (43,6%). El diagrama de flujo principal utilizado en los cuidados fue padres preocupados (22,4%) y el discriminador más prevalente fue el evento reciente (15,3%). El resultado de internación se produjo en el 10,4% de los casos realizados en la emergencia pediátrica, sin embargo el 61,8% de las visitas precisaron permanecer en observación y/o estar bajo el cuidado del equipo de atención médica en la emergencia pediátrica. padres preocupados fue el diagrama de flujo

  5. Final Technical Progress Report: High-Efficiency Low-Cost Thin-Film GaAs Photovoltaic Module Development Program; July 14, 2010 - January 13, 2012

    SciTech Connect

    Mattos, L.

    2012-03-01

    This is the final technical progress report of the High-Efficiency Low-Cost Thin-Film GaAs Photovoltaic Module Development Program. Alta Devices has successfully completed all milestones and deliverables established as part of the NREL PV incubator program. During the 18 months of this program, Alta has proven all key processes required to commercialize its solar module product. The incubator focus was on back end process steps directed at conversion of Alta's high quality solar film into high efficiency 1-sun PV modules. This report describes all program deliverables and the work behind each accomplishment.

  6. [Frequency of eating away-from-home and quality of dietary carbohydrate and fat intake in the SUN Project].

    PubMed

    Villacis, Cecilia; Zazpe, Itziar; Santiago, Susana; De la Fuente-Arrillaga, Carmen; Bes-Rastrollo, Maira; Martínez-González, Miguel Angel

    2014-10-03

    Objetivo: Investigar la asociación entre la frecuencia de comidas fuera de casa (CFC) con a) la calidad de hidratos de carbono y b) la calidad de grasas. Materiales y métodos: Se evaluaron 19.371 participantes de la cohorte SUN que completaron un cuestionario basal de frecuencia de consumo de alimentos previamente validado. Se utilizaron los índices de calidad de hidratos de carbono (ICHC) en una escala de 4 a 20 y de grasas (ICG) en una escala de 0,62 a 5,92. En ambos casos, a mayor puntuación mayor calidad. Se utilizó la regresión lineal múltiple para determinar la asociación entre la frecuencia de CFC (4 categorías) y la puntuación de ambos índices, y la regresión logística para medir la asociación entre la frecuencia de CFC y un bajo ICHC o ICG (

  7. 77 FR 61654 - Notice of Final Federal Agency Actions on Proposed Highway in California

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-10

    ... cross four local surface streets: Sanyo Avenue, Enrico Fermi Drive, Alta Road, and Siempre Viva Road.... SR-11 will include a full interchange at Enrico Fermi Drive and partial interchange at Siempre Viva...

  8. 78 FR 47268 - Endangered and Threatened Wildlife and Plants; Notice of Intent To Prepare an Environmental...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-05

    ...-2013- 0098, or visit the following locations: Carson National Forest, 208 Cruz Alta Road, Taos, NM... Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.). Dated: July 25, 2013. Rachel Jacobson,...

  9. 76 FR 60451 - Questa Ranger District, Carson National Forest; Taos County, NM; Taos Ski Valley's 2010 Master...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-29

    ... authorize several (Phase 1) projects included in the Taos Ski Valley (TSV) 2010 Master Development Plan (MDP... National Forest, Taos Ski Valley MDP--Phase 1 Projects, 208 Cruz Alta Road, Taos, NM 87571. Comments...

  10. Modelling Crop Biocontrol by Wanderer Spiders

    NASA Astrophysics Data System (ADS)

    Venturino, Ezio; Ghersi, Andrea

    2008-09-01

    We study mathematically the effects some spiders populations have on insects living in and near agroecosystems, where woods and vineyards alternate in the landscape as in the Alta Langa, Piemonte, NW Italy.

  11. 76 FR 80961 - Notice of Public Meeting: Resource Advisory Councils, Nevada

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-27

    ... Basin RAC in Las Vegas, Nevada. The meeting is open to the public and a public comment period will be... Hotel and Casino, 9090 Alta Drive, Las Vegas, Nevada. Agenda topics include a presentation...

  12. Comparison of Injection Sclerotherapy Between 5% Phenol in Almond Oil and Aluminum Potassium Sulfate and Tannic Acid for Grade 3 Hemorrhoids.

    PubMed

    Yano, Takaaki; Yano, Kenji

    2015-06-01

    Injection sclerotherapy for hemorrhoids has been performed for many years. Currently, 5% phenol in almond oil (PAO) and aluminum potassium sulfate and tannic acid (ALTA) are used as the agents. The purpose of this study was to compare the efficacy of the two agents. A retrospective study was conducted involving 135 patients who underwent injection therapy for grade 3 hemorrhoids for the first time between 2013 and 2014 (PAO, 55 patients; ALTA, 80 patients). The efficacy was established as the proportion (%) of patients without symptoms such as hemorrhage and prolapse one year after treatment. We investigated four factors-sex, age, number of hemorrhoids, and agent-that might have an influence on the efficacy. The efficacies of ALTA and PAO one year after treatment were 75% and 20%, respectively. Only the agent was a significant independent factor (P < 0.01). The results suggest that ALTA is markedly more useful than PAO for injection sclerotherapy for grade 3 hemorrhoids.

  13. Clinical utility of sclerotherapy with a new agent for treatment of rectal prolapse in patients with risks.

    PubMed

    Tokunaga, Yukihiko

    2014-04-01

    Perineal approaches are widely applied for the treatment of rectal prolapse. Recently, less-invasive treatments such as sclerotherapy using aluminum potassium sulfate/tannic acid (ALTA) have been introduced for internal hemorrhoids. Herein, we report the results of ALTA injection for the treatment of rectal prolapse in high-risk patients. Between January 2009 and March 2011, we performed ALTA injection sclerosing therapy in 12 female patients with high risk for preoperative complications. Using the perineal approach, 0.5 to 1 mL of ALTA was injected into the submucosa at 30 to 60 different sites. All patients were successfully treated without any operative or postoperative morbidity. Average operation time took 35±7 (mean±SD) minutes, and average volume of ALTA injected was 39±6 mL per patient. Neither complaints of bleeding nor findings of anal stenosis were noted. A slight degree of recurrence of prolapse developed in a patient after 8 months. The patient required an additional injection to be cured. ALTA injection could be administered for the treatment of rectal prolapse without any pain or complication and would be useful even for patients with risks due to preoperative complications and/or medical history.

  14. C. butyricum lipoteichoic acid inhibits the inflammatory response and apoptosis in HT-29 cells induced by S. aureus lipoteichoic acid.

    PubMed

    Wang, Jinbo; Qi, Lili; Mei, Lehe; Wu, Zhige; Wang, Hengzheng

    2016-07-01

    Lipoteichoic acid (LTA) is one of microbe-associated molecular pattern (MAMP) molecules of gram-positive bacteria. In this study, we demonstrated that Clostridium butyricum LTA (bLTA) significantly inhibited the inflammatory response and apoptosis induced by Staphylococcus aureus LTA (aLTA) in HT-29 cells. aLTA stimulated the inflammatory responses by activating a strong signal transduction cascade through NF-κB and ERK, but bLTA did not activate the signaling pathway. bLTA pretreatment inhibited the activation of the NF-κB and ERK signaling pathway induced by aLTA. The expression and release of cytokines such as IL-8 and TNF-α were also suppressed by bLTA pretreatment. aLTA treatment induced apoptosis in HT-29 cells, but bLTA did not affect the viability of the cells. Further study indicated that bLTA inhibited apoptosis in HT-29 cells induced by aLTA. These results suggest that bLTA may act as an aLTA antagonist and that an antagonistic bLTA may be a useful agent for suppressing the pro-inflammatory activities of gram-positive pathogenic bacteria. Copyright © 2016 Elsevier B.V. All rights reserved.

  15. Treatment of Internal Hemorrhoids by Endoscopic Sclerotherapy with Aluminum Potassium Sulfate and Tannic Acid

    PubMed Central

    Tomiki, Yuichi; Ono, Seigo; Takahashi, Rina; Ishiyama, Shun; Sugimoto, Kiichi; Yaginuma, Yukihiro; Goto, Michitoshi; Okuzawa, Atsushi

    2015-01-01

    Objective. A new sclerosing agent for hemorrhoids, aluminum potassium sulfate and tannic acid (ALTA), is attracting attention as a curative treatment for internal hemorrhoids without resection. The outcome and safety of ALTA sclerotherapy using an endoscope were investigated in the present study. Materials and Methods. Subjects comprised 83 internal hemorrhoid patients (61 males and 22 females). An endoscope was inserted and retroflexed in the rectum, and a 1st-step injection was applied to the upper parts of the hemorrhoids. The retroflexed scope was returned to the normal position, and 2nd–4th-step injections were applied to the middle and lower parts of the hemorrhoids under direct vision. The effects of endoscopic ALTA sclerotherapy were determined by evaluating the condition of the hemorrhoids using an anoscope and interviewing the patient 28 days after the treatment. Results. A cure, improvement, and failure were observed in 54 (65.1%), 27 (32.5%), and 2 (2.4%) patients, respectively, treated with ALTA. Complications developed in 4 patients (mild fever in 3 and hematuria in 1). Recurrence occurred in 9.6%. Conclusions. The results of the present study suggest that endoscopic ALTA has the potential to become a useful and minimally invasive approach for ALTA sclerotherapy. PMID:26246785

  16. Treatment of Internal Hemorrhoids by Endoscopic Sclerotherapy with Aluminum Potassium Sulfate and Tannic Acid.

    PubMed

    Tomiki, Yuichi; Ono, Seigo; Aoki, Jun; Takahashi, Rina; Ishiyama, Shun; Sugimoto, Kiichi; Yaginuma, Yukihiro; Kojima, Yutaka; Goto, Michitoshi; Okuzawa, Atsushi; Sakamoto, Kazuhiro

    2015-01-01

    Objective. A new sclerosing agent for hemorrhoids, aluminum potassium sulfate and tannic acid (ALTA), is attracting attention as a curative treatment for internal hemorrhoids without resection. The outcome and safety of ALTA sclerotherapy using an endoscope were investigated in the present study. Materials and Methods. Subjects comprised 83 internal hemorrhoid patients (61 males and 22 females). An endoscope was inserted and retroflexed in the rectum, and a 1st-step injection was applied to the upper parts of the hemorrhoids. The retroflexed scope was returned to the normal position, and 2nd-4th-step injections were applied to the middle and lower parts of the hemorrhoids under direct vision. The effects of endoscopic ALTA sclerotherapy were determined by evaluating the condition of the hemorrhoids using an anoscope and interviewing the patient 28 days after the treatment. Results. A cure, improvement, and failure were observed in 54 (65.1%), 27 (32.5%), and 2 (2.4%) patients, respectively, treated with ALTA. Complications developed in 4 patients (mild fever in 3 and hematuria in 1). Recurrence occurred in 9.6%. Conclusions. The results of the present study suggest that endoscopic ALTA has the potential to become a useful and minimally invasive approach for ALTA sclerotherapy.

  17. MATERNAL AND POST-WEANING EXPOSURE TO A HIGH FAT DIET PROMOTES VISCERAL OBESITY AND HEPATIC STEATOSIS IN ADULT RATS.

    PubMed

    dos Santos Perez, Gabriela; Santana dos Santos, Lucimeire; dos Santos Cordeiro, Gabriele; Matos Paraguassú, Gardênia; Abensur Athanazio, Daniel; Couto, Ricardo David; Bonfim de Jesus Deiró, Tereza Cristina; Manhães de Castro, Raul; Barreto-Medeiros, Jairza Maria

    2015-10-01

    Objetivo: teniendo en cuenta el consumo frecuente de dietas ricas en grasas por las mujeres en edad reproductiva, el objetivo del presente estudio fue investigar los efectos del consumo materno de una dieta alta en grasas durante el periodo perinatal y/o post-destete en el higado y el metabolismo de los lipidos en ratas jovenes. Métodos: ratas hembra Wistar fueron alimentadas durante el embarazo y la lactancia con un alto contenido de grasa (H) o de control (C). La descendencia se asigno a cuatro grupos: Control (CC, n = 11), descendencia alimentada con una dieta de control despues del destete; Control de dieta alta en grasa (CH, n = 10), crias alimentadas con una dieta alta en grasas despues del destete; Alta en grasas de alta en grasa (HH, n = 10), hijos de madres H alimentados con una dieta alta en grasas despues del destete; y Control de alta en grasa (HC, n = 9), hijos de madres H alimentados con dieta de control tras el destete. Resultados y discusión: la ingesta de alimentos no difirio entre los grupos; sin embargo, el peso relativo del tejido adiposo fue mayor en los animales de los grupos HC, HH y CH (p ≤ 0,005). La esteatosis hepatica se encontro en los CH y HH, que tambien presentaban hipercolesterolemia (p ≤ 0,05). Los niveles de las enzimas hepaticas alanina aminotransferasa (ALT) y gamma-glutamil transpeptidasa (GGT) fueron mayores en el grupo de HH, y el nivel de LDL fue mayor en el grupo CH en comparacion con el CC. El consumo de la dieta propicio la obesidad durante los periodos criticos del desarrollo y puede contribuir a la aparicion de obesidad visceral, esteatosis hepatica e hipercolesterolemia en ratas adultas, incluso en ausencia de cambios en la ingesta dietetica.

  18. Aluminum potassium sulfate and tannic acid sclerotherapy for Goligher Grades II and III hemorrhoids: Results from a multicenter study.

    PubMed

    Miyamoto, Hidenori; Hada, Takenori; Ishiyama, Gentaro; Ono, Yoshito; Watanabe, Hideo

    2016-07-18

    To show that aluminum potassium sulfate and tannic acid (ALTA) sclerotherapy has a high success rate for Grade II and III hemorrhoids. This study was based on the clinical data of 604 patients with hemorrhoids who underwent ALTA sclerotherapy between January 2009 and February 2015. The objective of this study was to assess the efficacy of this treatment for Grades II and III hemorrhoids. Preoperative and postoperative symptoms, complications and success rate were all assessed retrospectively. Follow-up consisted of a simple questionnaire, physical examination and an anoscopy. Patients were followed-up at one day, one week, two weeks, one month, one year, two years, three years, four years and five years after the ALTA sclerotherapy. One hundred and sixty-nine patients were diagnosed with Grade II hemorrhoids and 435 patients were diagnosed with Grade III hemorrhoids. The one year, three year and five year cumulative success rates of ALTA sclerotherapy for Grades II and III hemorrhoids were 95.9% and 93.1%; 89.3% and 83.7%; and 89.3% and 78.2%, respectively. No significant differences were observed in the cumulative success rates after ALTA sclerotherapy between Grades II and III hemorrhoids (P = 0.09). There were forty-seven post-operative complications (low grade fever; anal pain; urinary retention; rectal ulcer; and others). No serious or life-threatening complications occurred and all cases improved through conservative treatment. At univariate analysis there were no predictive factors of failure. ALTA sclerotherapy has had a high success rate for Grade II and III hemorrhoids during five years of post-operative treatment. However, additional studies are needed to evaluate the efficacy of this ALTA sclerotherapy in the management of hemorrhoidal disease.

  19. Aluminum potassium sulfate and tannic acid sclerotherapy for Goligher Grades II and III hemorrhoids: Results from a multicenter study

    PubMed Central

    Miyamoto, Hidenori; Hada, Takenori; Ishiyama, Gentaro; Ono, Yoshito; Watanabe, Hideo

    2016-01-01

    AIM: To show that aluminum potassium sulfate and tannic acid (ALTA) sclerotherapy has a high success rate for Grade II and III hemorrhoids. METHODS: This study was based on the clinical data of 604 patients with hemorrhoids who underwent ALTA sclerotherapy between January 2009 and February 2015. The objective of this study was to assess the efficacy of this treatment for Grades II and III hemorrhoids. Preoperative and postoperative symptoms, complications and success rate were all assessed retrospectively. Follow-up consisted of a simple questionnaire, physical examination and an anoscopy. Patients were followed-up at one day, one week, two weeks, one month, one year, two years, three years, four years and five years after the ALTA sclerotherapy. RESULTS: One hundred and sixty-nine patients were diagnosed with Grade II hemorrhoids and 435 patients were diagnosed with Grade III hemorrhoids. The one year, three year and five year cumulative success rates of ALTA sclerotherapy for Grades II and III hemorrhoids were 95.9% and 93.1%; 89.3% and 83.7%; and 89.3% and 78.2%, respectively. No significant differences were observed in the cumulative success rates after ALTA sclerotherapy between Grades II and III hemorrhoids (P = 0.09). There were forty-seven post-operative complications (low grade fever; anal pain; urinary retention; rectal ulcer; and others). No serious or life-threatening complications occurred and all cases improved through conservative treatment. At univariate analysis there were no predictive factors of failure. CONCLUSION: ALTA sclerotherapy has had a high success rate for Grade II and III hemorrhoids during five years of post-operative treatment. However, additional studies are needed to evaluate the efficacy of this ALTA sclerotherapy in the management of hemorrhoidal disease. PMID:27458504

  20. [Control of epilepsy in adult patients with tuberous sclerosis].

    PubMed

    Gallardo-Tur, Alejandro; García-Martín, Guillermina; Chamorro-Muñoz, María Isabel; Romero-Godoy, Jorge; Romero-Acebal, Manuel

    2013-06-01

    Introduccion. La esclerosis tuberosa es una enfermedad genetica cuyas manifestaciones principales son la formacion de tumores neuroectodermicos, que asocia epilepsia secundaria muy frecuentemente. Objetivo. Describir el perfil epileptico, el control, la frecuencia de crisis y la efectividad del tratamiento en pacientes adultos con esclerosis tuberosa. Pacientes y metodos. Estudio descriptivo en el que se han incluido pacientes adultos (mayores de 14 anos) con diagnostico confirmado de esclerosis tuberosa. Se ha analizado la frecuencia y tipos de crisis. Se ha realizado un estudio y contabilizacion de los diferentes farmacos antiepilepticos en cada paciente, la frecuencia de uso de cada principio activo y un estudio comparativo entre control de crisis y tipo de terapia. Resultados. De 19 adultos estudiados, tuvieron crisis epilepticas 16 (84%). Presentaron control de crisis completo, crisis esporadicas y crisis frecuentes el 44%, 25% y 31%, respectivamente. Hubo frecuencia de crisis focales, generalizadas y ambas en el 38%, 6% y 25%, respectivamente. Estaban en tratamiento con farmacos antiepilepticos en monoterapia, biterapia y triterapia el 38%, 44% y 19%, respectivamente. El mas consumido globalmente fue el levetiracetam, seguido de la carbamacepina y el acido valproico. En monoterapia, el mas frecuente fue la carbamacepina, con mayor proporcion de control completo. Conclusiones. La epilepsia en la esclerosis tuberosa es relativamente benigna, y se consigue un aceptable control en la mayoria de casos con un numero de antiepilepticos acorde con lo aconsejado en las guias de tratamiento. Se observa estabilidad de lesiones, y no hay malignizacion en nuestra serie. El bajo numero de la muestra limita el estudio, pero se observan proporciones similares de efectividad del tratamiento respecto a otra serie publicada.

  1. [Frequency of sensitization to aeroallergens in patients with seasonal and perennial allergic conjunctivitis].

    PubMed

    Cortés-Morales, Guillermina; Velasco-Medina, Andrea Aida; Arroyo-Cruz, Mariana Esther; Velázquez-Sámano, Guillermo

    2014-01-01

    Antecedentes: la conjuntivitis alérgica es una enfermedad inflamatoria que afecta directamente a la conjuntiva, la patogénesis de la conjuntivitis alérgica es predominantemente una reacción de hipersensibilidad tipo I mediada por IgE. Se relaciona principalmente con la sensibilización a aeroalergenos extra e intradomiciliarios. En términos clínicos se clasifica como estacional o perenne. El cuadro clínico consiste en prurito ocular, hiperemia conjuntival, epífora y fotofobia. Objetivo: determinar la frecuencia de sensibilización a aeroalergenos en pacientes con conjuntivitis alérgica estacional o perenne que acuden al Servicio de Alergia e Inmunología Clínica del Hospital General de México. Material y método: estudio transversal y descriptivo efectuado en pacientes con conjuntivitis alérgica estacional o perenne. Previo consentimiento informado, se realizó la historia clínica completa, así como estudios de laboratorio y pruebas cutáneas a aeroalergenos; se determinó la frecuencia de sensibilización a aeroalergenos. Resultados: se encontró con mayor frecuencia la sensibilización a pólenes de Quercus, Alnus y Fraxinus, seguidos de Dermatophagoides spp. Predominó el género femenino entre la segunda y cuarta décadas de la vida. Conclusiones: la conjuntivitis alérgica es una enfermedad frecuente asociada con rinitis alérgica. Los alergenos asociados con mayor frecuencia en este estudio fueron los pólenes y ácaros del polvo doméstico.

  2. Print characterization of photomasks from next-generation deep-ultra-violet laser pattern generator

    NASA Astrophysics Data System (ADS)

    Jackson, Curt; Kiefer, Robert; Buck, Peter; Mellenthin, David; Manfredo, John; Garg, Vishal; Hickethier, Jason; Cohen, Sarah; Morgante, Cris; Allen, Paul C.; Christenson, Eric; White, Michael

    2005-06-01

    Currently, the ALTA 4300 generation DUV Laser tool is capable of printing critical and semi-critical photomasks for the 130nm and 90nm IC technology nodes. With improved optical elements, an improved objective lens, and a higher bandwidth data-path the capability of the tool has been dramatically enhanced - culminating with the introduction of the ALTA 4700. Both the ALTA 4300 system"s diffractive optic element (DOE) and acousto-optic modulator (AOM) have been refined. Additionally, the ALTA 4300 system"s 33x, 0.8NA objective lens has been replaced with a 42x, 0.9NA objective lens. Finally, the tool"s data-path has been enhanced to maintain the ALTA system"s superior write time on critical mask layers. Quantitative results of these enhancements will be detailed through reporting of critical feature resolution limits, CD uniformity control, and pattern placement accuracy on mask. Performance will be shown from masks printed pre- and post- hardware upgrade. Experimental results will be compared with theoretical calculations that show expected and actual improvements. In this paper details of the aerial image created when printing wafers with DUV Laser generated photomasks pre- and post- upgrade will be shown. 193nm print results will be shown with multiple illumination conditions. Details of a print test comparison performed on photomasks from each tool configuration will be documented. The print test comparison will include process window characterization from each mask type.

  3. Newberry Seismic Deployment Fieldwork Report

    SciTech Connect

    Wang, J; Templeton, D C

    2012-03-21

    This report summarizes the seismic deployment of Lawrence Livermore National Laboratory (LLNL) Geotech GS-13 short-period seismometers at the Newberry Enhanced Geothermal System (EGS) Demonstration site located in Central Oregon. This Department of Energy (DOE) demonstration project is managed by AltaRock Energy Inc. AltaRock Energy had previously deployed Geospace GS-11D geophones at the Newberry EGS Demonstration site, however the quality of the seismic data was somewhat low. The purpose of the LLNL deployment was to install more sensitive sensors which would record higher quality seismic data for use in future seismic studies, such as ambient noise correlation, matched field processing earthquake detection studies, and general EGS microearthquake studies. For the LLNL deployment, seven three-component seismic stations were installed around the proposed AltaRock Energy stimulation well. The LLNL seismic sensors were connected to AltaRock Energy Gueralp CMG-DM24 digitizers, which are powered by AltaRock Energy solar panels and batteries. The deployment took four days in two phases. In phase I, the sites were identified, a cavity approximately 3 feet deep was dug and a flat concrete pad oriented to true North was made for each site. In phase II, we installed three single component GS-13 seismometers at each site, quality controlled the data to ensure that each station was recording data properly, and filled in each cavity with native soil.

  4. Outcomes of case-matched injection sclerotherapy with a new agent for hemorrhoids in patients treated with or without blood thinners.

    PubMed

    Yano, T; Nogaki, T; Asano, M; Tanaka, S; Kawakami, K; Matsuda, Y

    2013-08-01

    In Japan, a new type of sclerotherapy termed ALTA (aluminum potassium sulfate and tannic acid) injection therapy has recently been introduced. The objectives of this study were to determine whether the presence or absence of antithrombotic treatment (AT) affected the efficacy rate or the occurrence of complications associated with ALTA injection sclerotherapy. This study was a case-matched study of 37 patients who underwent ALTA therapy to treat hemorrhoids between 2007 and 2009. Each AT patient was matched for age and degree of hemorrhoids with a control non-AT patient. In each of the subgroups, the therapeutic efficacy of ALTA therapy was evaluated by comparing an assessment completed before therapy with an assessment completed 6 months after therapy. The efficacy in patients with bleeding did not differ between the two groups (P = 0.074). The efficacy in patients with prolapse was significantly lower in the AT group than in the non-AT group (P = 0.013). The two groups did not differ significantly in the occurrence of complications (P = 0.450). Among patients with hemorrhoids receiving AT, ALTA injection sclerotherapy is recommended for those in whom it is difficult to discontinue AT.

  5. Desarrollo de un receptor polarimétrico en banda S para aplicación en estudios radioastronómicos

    NASA Astrophysics Data System (ADS)

    Barberis, C. M.; Bava, J. A.; Sanz, A. J.

    Desde el punto de vista tecnológico, el objetivo principal de este proyecto es desarrollar un cabezal de receptor en la frecuencia de 3.3 GHz, con una temperatura del sistema de 60 K y un ancho de banda de 140 MHz. El mismo será instalado en el foco primario de un reflector parabólico de 30 metros de diámetro que funcionará como radiómetro en el IAR. El receptor es del tipo polarimétrico, con lo cual permite la posibilidad de obtener las componentes de polarización lineal y circular. Para tal fin el cabezal constará de dos ramas receptoras que amplificarán la señal y la trasladarán a una frecuencia menor, (frecuencia intermedia), permitiendo de esa forma un mejor transporte de la señal a la sala de control para su posterior procesamiento. El receptor, además de tener características polarimétricas, podrá ser usado en el contínuo y en la línea, utilizando las ventajas observacionales y de procesamiento de señal que actualmente posee el IAR.

  6. Liver injury after aluminum potassium sulfate and tannic acid treatment of hemorrhoids

    PubMed Central

    Yoshikawa, Kenichi; Kawashima, Reimi; Hirose, Yuki; Shibata, Keiko; Akasu, Takafumi; Hagiwara, Noriko; Yokota, Takeharu; Imai, Nami; Iwaku, Akira; Kobayashi, Go; Kobayashi, Hirohiko; Kinoshita, Akiyoshi; Fushiya, Nao; Kijima, Hiroyuki; Koike, Kazuhiko; Saruta, Masayuki

    2017-01-01

    We are reporting a rare case of acute liver injury that developed after an internal hemorrhoid treatment with the aluminum potassium sulfate and tannic acid (ALTA) regimen. A 41-year-old man developed a fever and liver injury after undergoing internal hemorrhoid treatment with a submucosal injection of ALTA with lidocaine. The acute liver injury was classified clinically as hepatocellular and pathologically as cholestastic. We could not classify the mechanism of injury. High eosinophil and immunoglobulin E levels characterized the injury, and a drug lymphocyte stimulation test was negative on postoperative day 25. Fluid replacement for two weeks after hospitalization improved the liver injury. ALTA therapy involves injecting chemicals into the submucosa, from the rectum to the anus, and this is the first description of a case that developed a severe liver disorder after this treatment; hence, an analysis of future cases as they accumulate is desirable. PMID:28785156

  7. [Early discharge of the healthy newborn from the nursery of the Hospital Español de México].

    PubMed

    Santos Burgoa-Larrañaga, Lorena; Iglesias-Leboreiro, José; Bernardez-Zapata, Isabel

    2016-01-01

    Introducción: el riesgo-beneficio del alta temprana en neonatos es controversial. No encontramos estudios concluyentes que analicen las variables del neonato y el impacto en su morbilidad al alta temprana. Asociamos estadísticamente variables con alguna terapia adicional que pudiera poner en riesgo al neonato de alta temprana. Métodos: estudio prolectivo observacional en recién nacidos de término desde el nacimiento hasta el alta (de agosto a diciembre de 2013). Se hizo seguimiento telefónico al mes de vida para conocer su estado de salud. Las variables dependientes fueron las horas intrahospitalarias, las terapias adicionales y la atención intrahospitalaria en el primer mes. Resultados: 701 neonatos a término, 41 con terapia adicional, 23 ingresos a UCIN (22 en < 24 horas). Hubo un RR de 12.9 si el Apgar era < 8.8. Hubo 9 veces más riesgo de terapia adicional si había < 38 semanas de gestación. El peso bajo triplicó el riesgo para ingreso a UCIN. Hubo 143 altas tempranas, 58 % seguimiento telefónico, 0 % de reingresos. Las principales variables que influyen en requerir terapia adicional son el Apgar < 8 a los 5 minutos, tener < 38 semanas de gestación y peso bajo.Conclusión: los elementos para el manejo de pacientes con alta temprana son datos de alarma, seguimiento con pediatra a los tres días de vida, vigilancia estrecha si el APGAR es < 8 a los 5 minutos o < 38 semanas de gestación o si hay peso bajo para la edad gestacional.

  8. Positive Identification of Microgram Quantities of Asbestos Using Infrared Spectroscopy,

    DTIC Science & Technology

    1981-09-01

    I- - ,, - e m m au m . ... are shown in Figures 3-5. -19- Figure 3. (a) A spectrum of a boiler gasket material composed of asbestos...AMTE 2- DAES 1 - RAE 2 - CFB Shearwater, N.S. 1 - NAML 1 - CFB Comox, B.C. 1 - AOL 1 - CFB Edmonton, Alta. 1 - CFB Cold Lake, Alta. 2 - BDLS 1...diocuiie in t is rlasSltied) 1 0111I(INAIIN( At:IIVIIY 2.1. (OCUMI NI SECURITY CLASSIF ICArION Defence Research Establishment Pacific UNCLASSIFIED CFB

  9. Prediction of novel alloy phases of Al with Sc or Ta

    PubMed Central

    Bilić, Ante; Gale, Julian D.; Gibson, Mark A.; Wilson, Nick; McGregor, Kathie

    2015-01-01

    Using the evolutionary optimization algorithm, as implemented in the USPEX crystal predictor program, and first principles total energy calculations, the compositional phase diagrams for Al-Sc and Al-Ta alloy systems at zero temperature and pressure have been calculated. In addition to the known binary intermetallic phases, new potentially stable alloys, AlSc3 and AlTa7, have been identified in the Al-poor region of the phase diagram. The dynamic and thermal stability of their lattices has been confirmed from the calculated vibrational normal mode spectra in the harmonic approximation. PMID:25950915

  10. On the hydrodynamics of rocket propellant engine inducers and turbopumps

    NASA Astrophysics Data System (ADS)

    d'Agostino, L.

    2013-12-01

    The lecture presents an overview of some recent results of the work carried out at Alta on the hydrodynamic design and rotordynamic fluid forces of cavitating turbopumps for liquid propellant feed systems of modern rocket engines. The reduced order models recently developed for preliminary geometric definition and noncavitating performance prediction of tapered-hub axial inducers and centrifugal turbopumps are illustrated. The experimental characterization of the rotordynamic forces acting on a whirling four-bladed, tapered-hub, variable-pitch high-head inducer, under different load and cavitation conditions is presented. Future perspectives of the work to be carried out at Alta in this area of research are briefly illustrated.

  11. Land-surface subsidence in the area of Moses Lake near Texas City, Texas

    USGS Publications Warehouse

    Gabrysch, R.K.; Bonnet, C.W.

    1976-01-01

    Probable future subsidence was calculated by two methods for two loading situations. In the first loading situation, the artesian head in the middle Chicot aquifer, in the Alta Loma Sand (Rose, 1943), and in the Evangeline aquifer would continue to decline at respective rates of 1, 3, and 3 feet per year until 1980 and then cease. In the second loading situation, the artesian head in the middle Chicot aquifer, in the Alta Loma Sand, and in the Evangeline aquifer would continue to decline at respective rates of 1, 3, and 3 feet per year until 1990 and then cease. 

  12. Land-surface subsidence at Seabrook, Texas

    USGS Publications Warehouse

    Gabrysch, R.K.; Bonnet, C.W.

    1975-01-01

    Probable future subsidence was calculated by two different methods for each of two different loading situations. In the first loading situation, the artesian heads in the Alta Loma Sand (Rose, 1943) and Evangeline aquifer would continue to decline at the respective rates of 8 feet per year and 7 feet per year until 1980 and then cease. In the second loading situation, the artesian heads in the Alta Loma Sand and Evangeline aquifer would continue to decline at rates of 8 and 7 feet per year ulntil 1990 and then cease. 

  13. 78 FR 28219 - Granting of Request for Early Termination of the Waiting Period Under the Premerger Notification...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-14

    ... Master Fund, L.P.; MICROS Systems, Inc.; ValueAct Capital Master Fund, L.P. 20130738 G KIA VIII (Power), L.P.; PowerTeam Services, LLC; KIA VIII (Power), L.P. 20130741 G AltaGas Ltd.; LS Power Equity.../2013 20130755 G E. Stanley Kroenke; Outdoor Channel Holdings, Inc.; E. Stanley Kroenke. 20130761 G...

  14. A Comprehensive and Systematic Model of User Evaluation of Web Search Engines: II. An Evaluation by Undergraduates.

    ERIC Educational Resources Information Center

    Su, Louise T.

    2003-01-01

    Presents an application of a model of user evaluation of four major Web search engines (Alta Vista, Excite, Infoseek, and Lycos) by undergraduates. Evaluation was based on 16 performance measures representing five evaluation criteria-relevance, efficiency, utility, user satisfaction, and connectivity. Content analysis of verbal data identified a…

  15. Obesity, Poverty, and Participation in Nutrition Assistance Programs. Family Programs. Report No. FSP-04-PO.

    ERIC Educational Resources Information Center

    Linz, Paul; Lee, Michael; Bell, Loren

    2005-01-01

    In September 2003, the U. S. Department of Agriculture (USDA) Food and Nutrition Service (FNS) contracted with ALTA Systems to conduct a project with the goal of providing a comprehensive overview of the relationship between poverty, program participation and obesity by conducting an in depth literature review; and convening an expert panel. The…

  16. 43 CFR 9239.5-1 - Ores.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... follows: (1) Measure of damages is the same as in the case of coal. Benson Mining and Smelting Co. v. Alta Mining and Smelting Co. (145 U.S. 428, 36 L. ed. 762; Durant Mining Co. v. Percy Consolidated Mining...

  17. Newberry Volcano EGS Demonstration Stimulation Modeling

    SciTech Connect

    Trenton T. Cladouhos, Matthew Clyne, Maisie Nichols,; Susan Petty, William L. Osborn, Laura Nofziger

    2011-10-23

    As a part of Phase I of the Newberry Volcano EGS Demonstration project, several data sets were collected to characterize the rock volume around the well. Fracture, fault, stress, and seismicity data has been collected by borehole televiewer, LiDAR elevation maps, and microseismic monitoring. Well logs and cuttings from the target well (NWG 55-29) and core from a nearby core hole (USGS N-2) have been analyzed to develop geothermal, geochemical, mineralogical and strength models of the rock matrix, altered zones, and fracture fillings (see Osborn et al., this volume). These characterization data sets provide inputs to models used to plan and predict EGS reservoir creation and productivity. One model used is AltaStim, a stochastic fracture and flow software model developed by AltaRock. The software's purpose is to model and visualize EGS stimulation scenarios and provide guidance for final planning. The process of creating an AltaStim model requires synthesis of geologic observations at the well, the modeled stress conditions, and the stimulation plan. Any geomechanical model of an EGS stimulation will require many assumptions and unknowns; thus, the model developed here should not be considered a definitive prediction, but a plausible outcome given reasonable assumptions. AltaStim is a tool for understanding the effect of known constraints, assumptions, and conceptual models on plausible outcomes.

  18. Understorey fire propagation and tree mortality on adjacent areas to an Amazonian deforestation fire

    Treesearch

    J.A. Carvalho; C.A. Gurgel Veras; E.C. Alvarado; D.V. Sandberg; S.J. Leite; R. Gielow; E.R.C. Rabelo; J.C. Santos

    2010-01-01

    Fire characteristics in tropical ecosystems are poorly documented quantitatively in the literature. This paper describes an understorey fire propagating across the edges of a biomass burn of a cleared primary forest. The experiment was carried out in 2001 in the Amazon forest near Alta Floresta, state of Mato Grosso, Brazil, as part of biomass burning experiments...

  19. 77 FR 72742 - Approval and Promulgation of State Implementation Plans: State of Washington; Regional Haze State...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-06

    ... (TransAlta). The Washington State Department of Ecology (Ecology) submitted its Regional Haze State... at 40 CFR 50.308. On December 29, 2011 Ecology submitted an update to the SIP submittal containing a...? Ecology submitted its Regional Haze SIP on December 22, 2010 to meet the requirements of 40 CFR 50.308. On...

  20. 77 FR 30467 - Approval and Promulgation of Implementation Plans; State of Washington; Regional Haze State...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-23

    ... Washington State Department of Ecology (Ecology) submitted its Regional Haze State Implementation Plan (SIP) on December 22, 2010 to meet the requirements of 40 CFR 50.308. On December 29, 2011 Ecology... (NO X ) emissions from TransAlta. Ecology submitted its Regional Haze SIP on December 22, 2010, to...

  1. 77 FR 31034 - Notice of Public Meeting, Farmington District Resource Advisory Council Meeting, New Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-24

    ..., 226 Cruz Alta Road, Taos, NM. A field trip is planned for June 13 at 8:30 a.m. The meeting is... include discussion of a proposed transportation plan for the Taos Field Office and a planned wild horse... management plan amendment to the Farmington Field Office Resource Management Plan. Felicia J. Probert,...

  2. Power Search.

    ERIC Educational Resources Information Center

    Haskin, David

    1997-01-01

    Compares six leading Web search engines (AltaVista, Excite, HotBot, Infoseek, Lycos, and Northern Light), looking at the breadth of their coverage, accuracy, and ease of use, and finds a clear favorite of the six. Includes tips that can improve search results. (AEF)

  3. Internet Search Engines - Fluctuations in Document Accessibility.

    ERIC Educational Resources Information Center

    Mettrop, Wouter; Nieuwenhuysen, Paul

    2001-01-01

    Reports an empirical investigation of the consistency of retrieval through Internet search engines. Evaluates 13 engines: AltaVista, EuroFerret, Excite, HotBot, InfoSeek, Lycos, MSN, NorthernLight, Snap, WebCrawler, and three national Dutch engines: Ilse, Search.nl and Vindex. The focus is on a characteristic related to size: the degree of…

  4. Web Search Services in 1998: Trends and Challenges.

    ERIC Educational Resources Information Center

    Feldman, Susan

    1998-01-01

    Charts the trends and challenges that 1998 has brought to popular search engines such as AltaVista, Excite, HotBot, Infoseek, Lycos, and Northern Light. Highlights testing strategies used, use of real (not artificial) intelligence, innovations, online market pressures, barriers to use, and tips and recommendations. (AEF)

  5. Where Do I Find It?--An Internet Glossary.

    ERIC Educational Resources Information Center

    Del Monte, Erin; Manso, Angela

    2001-01-01

    Lists 13 different Internet search engines that might be of interest to educators, including: AOL Search, Alta Vista, Google, Lycos, Northern Light, and Yahoo. Gives a brief description of each search engine's capabilities, strengths, and weaknesses and includes Web addresses of U.S. government offices, including the U.S. Department of Education.…

  6. National Aerospace Fuels Research Complex

    DTIC Science & Technology

    2010-03-01

    formulated or supplied the drawings, specifications, or other data does not license the holder or any other person or corporation ; or convey any rights...Logistics Agency) ECAT Estudios Combustibles y Altas Temperaturas (rig) F-T Fischer-Tropsch FSII Fuel System Icing Inhibitor GC Gas Chromatograph

  7. 1. Historic American Buildings Survey Miles W. Beemer, Photographer c. ...

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

    1. Historic American Buildings Survey Miles W. Beemer, Photographer c. 1920 From right to left: Alta House, unidentified house, O'Gorman House, Carrington House, Mandeville House, unidentified house, Richter House, two unidentified houses, Hedges House. - Broad Street, 900 Block (House), Newark, Essex County, NJ

  8. 78 FR 41391 - Pacific Gas and Electric Company; Notice of Application Amendment Accepted for Filing and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-10

    .... 3, Spaulding No. 1 and No. 2, Alta, Drum No. 1 and No. 2, and Dutch Flats Developments; and (3) Deer Creek Project (Project No. 14530-000) consisting of the Deer Creek Development (application amendment...-102), Drum-Spaulding (P-2310-193), and Deer Creek (P-14530-000) license applications according to...

  9. 77 FR 60050 - Special Regulations; Areas of the National Park System, Saguaro National Park, Bicycling

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-02

    ... Hope Camp Trail is a 2.8-mile-long hiking and equestrian trail that originates at the Loma Alta... route to be used for recreational purposes, including hiking, equestrian, and bicycle use. Shortly after... hiker and equestrian use only. Although closed to vehicular traffic, the route remains approximately...

  10. Explorers of the Local Region. Grade 3 Model Lesson for Unit 3, Standard 3. California History-Social Science Course Models.

    ERIC Educational Resources Information Center

    Smith, Denise

    Three Spanish explorers who visited the southern California region were Juan Cabrillo, Sebastian Vizcaino, and Gaspar de Portola. In the 1500s, the king of Spain sent explorers from Mexico to Baja and Alta, California, (most of today's California) looking for new wealth, gold, and a waterway to the Strait of Anian. Europeans thought that…

  11. Biomass consumption and CO2, CO and main hydrocarbon gas emissions in an Amazonian forest clearing fire

    Treesearch

    T. G. Soares Neto; J. A. Carvalho; C. A. G. Veras; E. C. Alvarado; R. Gielow; E. N. Lincoln; T. J. Christian; R. J. Yokelson; J. C. Santos

    2009-01-01

    Biomass consumption and CO2, CO and hydrocarbon gas emissions in an Amazonian forest clearing fire are presented and discussed. The experiment was conducted in the arc of deforestation, near the city of Alta Floresta, state of Mato Grosso, Brazil. The average carbon content of dry biomass was 48% and the estimated average moisture content of fresh biomass was 42% on...

  12. Biomass consumption and CO2, CO and main hydrocarbon gas emissions in an Amazonian forest clearing fire

    Treesearch

    T.G. Soares Neto; J.A. Carvalho J.A.; C.A.G. Veras; E.C. Alvarado; R. Gielow; E.N. Lincoln; T.J. Christian; R.J. Yokelson; J.C. Santos

    2009-01-01

    Biomass consumption and C02, CO and hydrocarbon gas emissions in an Amazonian forest clearing fire are presented and discussed. The experiment was conducted in the arc of deforestation, near the city of Alta Floresta, state of Mato Grosso, Brazil. The average carbon content of dry biomass was 48 percent and the estimated average moisture content...

  13. 78 FR 21353 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-10

    ...: ER10-3117-001; ER10-1093-002; ER10-1097-002. Applicants: Lea Power Partners, LLC, Delaware City Refining Company, LLC, PBF Power Marketing LLC. Description: Supplement to Lea Power Partners, LLC's.... Applicants: Alta Wind VIII, LLC, Bear Swamp Power Company LLC, Brookfield Energy Marketing, Inc, Brookfield...

  14. Tumacacori National Historical Park: Making History Come Alive. "Encounters" Fourth Grade Teachers' Guide.

    ERIC Educational Resources Information Center

    National Park Service (Dept. of Interior), Washington, DC.

    This 9-unit curriculum guide for 4th grade includes activities relating to the cultural and environmental history of southern Arizona, specifically the area known as the Pimeria Alta. The guide was designed by a group of teachers to be thematic and sequential, and to deal with the encounters of various cultures that are the history of the Santa…

  15. 76 FR 13613 - Supplemental Notice of Technical Conference

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-14

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Supplemental Notice of Technical Conference Docket No. Priority Rights to..., LLC Alta Windpower Development, LLC........ TGP Development Company, LLC Puget Sound Energy, Inc EL10...

  16. Netscape Communicator 4.5. Volume II: Beyond the Basics. Advanced Searches, Multimedia, and Composing a Web Page.

    ERIC Educational Resources Information Center

    Gallo, Gail; Wichowski, Chester P.

    This second of two guides on Netscape Communicator 4.5 contains six lessons on advanced searches, multimedia, and composing a World Wide Web page. Lesson 1 is a review of the Navigator window, toolbars, and menus. Lesson 2 covers AltaVista's advanced search tips, searching for information excluding certain text, and advanced and nested Boolean…

  17. 75 FR 39059 - Puerto Rico Disaster #PR-00008

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-07

    ... ADMINISTRATION Puerto Rico Disaster PR-00008 AGENCY: U.S. Small Business Administration. ] ACTION: Notice...: Barranquitas, Dorado, Naranjito, Vega Alta. Contiguous Municipalities: Puerto Rico: Aibonito, Bayamon, Cidra... injury is 12217 0. The Commonwealth which received an EIDL Declaration number is Puerto Rico. (Catalog of...

  18. Image Searching across the Web.

    ERIC Educational Resources Information Center

    Pack, Thomas

    2002-01-01

    Discusses how to find digital images on the Web. Considers images and copyright; provides an overview of the search capabilities of six search engines, including AltaVista, Google, AllTheWeb.com, Ditto.com, Picsearch, and Lycos; and describes specialized image search engines. (LRW)

  19. 76 FR 14966 - Supplemental Notice of Technical Conference

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-18

    ... VIII, LLC Alta Windpower Development, LLC... TGP Development Company, LLC...... Puget Sound Energy, Inc... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Supplemental Notice of Technical Conference Docket Nos. Priority Rights to...

  20. Find Good Sources of Online Images: A Picture Doesn't Have to Be a Thousand Searches

    ERIC Educational Resources Information Center

    Branzburg, Jeffrey

    2006-01-01

    The Internet is a natural place to look for images that teachers can use in lessons and students can use in projects and assignments. Google, Yahoo, AltaVista--many of these popular search engines offer image searching. Usually there is a tab to click at the top of the page to select image searching; just enter a search term and go! However, this…

  1. The Colonial North: Histories of Women and Violence from before the U.S. Invasion

    ERIC Educational Resources Information Center

    Heidenreich, Linda

    2005-01-01

    Histories of three nineteenth-century women, a landed Californiana, a soldier's wife and an indigenous woman who lived in northern Alta California prior to the U.S. invasion is presented using census records, newspapers, oral histories and stories. Their lives in relation to each other and in relation to the larger social-economic order at the…

  2. Internet Resources for Community College Practitioners. ERIC Digest.

    ERIC Educational Resources Information Center

    Shankar, Kalpana

    Internet resources provide a library of information to community college practitioners. Guides to these online resources include Yahoo!, Alta Vista, and Hotbot. Community college Internet sites, valuable research tools, are available for the American Association of Community Colleges, the League for Innovation in the Community College, the…

  3. Portugal.

    ERIC Educational Resources Information Center

    Eckles, David; Toro, Leonor, Ed.

    Brief information is provided on the region, climate, agriculture and industry of 10 provinces in Portugal: Tras-os-Montes e Alto Douro, located in Portugal's northeastern region; Beira Alta, the province with Portugal's highest elevation point; Beira Baixa, one of Portugal's poorest regions; Beira Litoral, located in central Portugal along the…

  4. Aluminum potassium sulfate and tannic acid injection in the treatment of total rectal prolapse: early outcomes.

    PubMed

    Hachiro, Yoshikazu; Kunimoto, Masao; Abe, Tatsuya; Kitada, Masahiro; Ebisawa, Yoshiaki

    2007-11-01

    No surgical method for repair of total rectal prolapse has been established as optimal. We describe a new technique that uses ALTA (aluminum potassium sulfate and tannic acid) injection as a simple perianal procedure for total rectal prolapse. Fourteen patients with total rectal prolapse were treated with sclerosing therapy by using ALTA injection. Via a perianal approach, 0.5 to 1 ml of ALTA solution was injected along a linear track into the submucosa at 30 to 80 different sites, totaling 20 to 60 ml. All 14 patients treated with injection sclerotherapy were cured, with no intraoperative or postoperative complications. One patient required a repeat injection after two months to be cured. No exacerbation of constipation has resulted, and no stenosis has been evident on rectal examination. In seven of ten patients presenting with fecal incontinence, this complaint resolved after therapy. ALTA sclerotherapy yielded satisfactory results in total rectal prolapse, causing no alteration in neurophysiology of bowel function. Injection sclerotherapy should be recommended as the first procedure for treatment of total rectal prolapse.

  5. CCD Photometer Installed on the Telescope - 600 OF the Shamakhy Astrophysical Observatory II. The Technique of Observation and Data Processing of CCD Photometry

    NASA Astrophysics Data System (ADS)

    Abdullayev, B. I.; Gulmaliyev, N. I.; Majidova, S. O.; Mikayilov, Kh. M.; Rustamov, B. N.

    2009-12-01

    Basic technical characteristics of CCD matrix U-47 made by the Apogee Alta Instruments Inc. are provided. Short description and features of various noises introduced by optical system and CCD camera are presented. The technique of getting calibration frames: bias, dark, flat field and main stages of processing of results CCD photometry are described.

  6. Explorers of the Local Region. Grade 3 Model Lesson for Unit 3, Standard 3. California History-Social Science Course Models.

    ERIC Educational Resources Information Center

    Smith, Denise

    Three Spanish explorers who visited the southern California region were Juan Cabrillo, Sebastian Vizcaino, and Gaspar de Portola. In the 1500s, the king of Spain sent explorers from Mexico to Baja and Alta, California, (most of today's California) looking for new wealth, gold, and a waterway to the Strait of Anian. Europeans thought that…

  7. New species of the cleptoparasitic bee genus Stelis (Hymenoptera: Megachilidae, Anthidiini) from the Nearctic Region

    USDA-ARS?s Scientific Manuscript database

    Descriptions and diagnoses of ten new Nearctic species of Stelis are presented: S. alta, S. anasazi, S. anthocopae, S. broemelingi, S. imperialis, S. joanae, S. lamelliterga, S. occidentalis, S. paiute, and S. shoshone. Six of these species have been reared from trapnests. Host associations, all wi...

  8. Testing the Degree of Cross-Sectional and Longitudinal Dependence between Two Discrete Dynamic Processes

    ERIC Educational Resources Information Center

    Flaherty, Brian P.

    2008-01-01

    Developmental research often involves studying change across 2 or more processes or constructs simultaneously. A natural question in this work is whether change in these 2 processes is related or independent. Associative latent transition analysis (ALTA) was designed to test hypotheses about the degree to which change in 2 discrete latent…

  9. 40 CFR 52.2720 - Identification of plan.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...-Illinois, Inc. Vega Alta plant. This variance remains in effect until November 2, 1985. (30) Revision... set of adopted regulations, entitled “Regulation for the Control of Atmospheric Pollution.” Rules 115... Oil Company's plant in Yabucoa. (34) Revision submitted by the Puerto Rico Environmental Quality Board...

  10. Spectral Analysis of Sound Propagation in Stratified Fluids.

    DTIC Science & Technology

    1980-04-01

    Kodaira, K., The eigenvalue problem for ordinary differential equations of the second order and Heisenberg’s theory of S- matrices , Amer. J. Math. 71...Transient electromagnetic wave propagation in a r dielectric waveguide, Istituto Nazionale di Alta Matematica , 4 Symposia Mathematica XVIII, 239-277

  11. Internet Search Engines - Fluctuations in Document Accessibility.

    ERIC Educational Resources Information Center

    Mettrop, Wouter; Nieuwenhuysen, Paul

    2001-01-01

    Reports an empirical investigation of the consistency of retrieval through Internet search engines. Evaluates 13 engines: AltaVista, EuroFerret, Excite, HotBot, InfoSeek, Lycos, MSN, NorthernLight, Snap, WebCrawler, and three national Dutch engines: Ilse, Search.nl and Vindex. The focus is on a characteristic related to size: the degree of…

  12. "Just the Answers, Please": Choosing a Web Search Service.

    ERIC Educational Resources Information Center

    Feldman, Susan

    1997-01-01

    Presents guidelines for selecting World Wide Web search engines. Real-life questions were used to test six search engines. Queries sought company information, product reviews, medical information, foreign information, technical reports, and current events. Compares performance and features of AltaVista, Excite, HotBot, Infoseek, Lycos, and Open…

  13. The Honeymoon Is Over: Leading the Way to Lasting Search Habits.

    ERIC Educational Resources Information Center

    Pierson, Melissa

    1997-01-01

    To become efficient Internet searchers, students and teachers need to learn online search skills. Discusses hierarchical subject directories (Yahoo) and search engines (Excite, Lycos, Alta Vista, HotBot); lists top search engines and their universal resource locators (URL). Provides examples of search strings; outlines search tips, and a…

  14. Web Search Services in 1998: Trends and Challenges.

    ERIC Educational Resources Information Center

    Feldman, Susan

    1998-01-01

    Charts the trends and challenges that 1998 has brought to popular search engines such as AltaVista, Excite, HotBot, Infoseek, Lycos, and Northern Light. Highlights testing strategies used, use of real (not artificial) intelligence, innovations, online market pressures, barriers to use, and tips and recommendations. (AEF)

  15. Quality Dimensions of Internet Search Engines.

    ERIC Educational Resources Information Center

    Xie, M.; Wang, H.; Goh, T. N.

    1998-01-01

    Reviews commonly used search engines (AltaVista, Excite, infoseek, Lycos, HotBot, WebCrawler), focusing on existing comparative studies; considers quality dimensions from the customer's point of view based on a SERVQUAL framework; and groups these quality expectations in five dimensions: tangibles, reliability, responsiveness, assurance, and…

  16. Staleness Among Web Search Engines.

    ERIC Educational Resources Information Center

    Koehler, Wallace

    1998-01-01

    Describes a study of four major Web search engines that tested for staleness, a condition when a significant number of the hits it returns point to Web pages or server-level domains (SLD) that are no longer viable. Results of tests of URLs with AltaVista, HotBot, InfoSeek, and Open Text are discussed. (Author/LRW)

  17. How To Do Field Searching in Web Search Engines: A Field Trip.

    ERIC Educational Resources Information Center

    Hock, Ran

    1998-01-01

    Describes the field search capabilities of selected Web search engines (AltaVista, HotBot, Infoseek, Lycos, Yahoo!) and includes a chart outlining what fields (date, title, URL, images, audio, video, links, page depth) are searchable, where to go on the page to search them, the syntax required (if any), and how field search queries are entered.…

  18. Power Search.

    ERIC Educational Resources Information Center

    Haskin, David

    1997-01-01

    Compares six leading Web search engines (AltaVista, Excite, HotBot, Infoseek, Lycos, and Northern Light), looking at the breadth of their coverage, accuracy, and ease of use, and finds a clear favorite of the six. Includes tips that can improve search results. (AEF)

  19. 76 FR 45789 - Combined Notice of Filings #2

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-01

    ... Energy Regulatory Commission Combined Notice of Filings 2 Take notice that the Commission received the... Interconnection, L.L.C. Description: PJM Interconnection, L.L.C. submits tariff filing per 35.13(a)(2)(iii: Queue... Edison Company submits tariff filing per 35.13(a)(2)(iii: LGIA Alta Visa SunTower Generating Station...

  20. 77 FR 63809 - Combined Notice of Filings #2

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Combined Notice of Filings 2 Take notice that the Commission received the following electric rate filings: Docket Numbers: ER12-1875-001. Applicants: AltaGas Renewable Energy...

  1. 77 FR 12276 - Combined Notice of Filings #2

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-29

    ... Energy Regulatory Commission Combined Notice of Filings 2 Take notice that the Commission received the.... Description: Section 203 Application of AES Red Oak, L.L.C. Filed Date: 2/21/12. Accession Number: 20120221... Alta Wind VIII, LLC, et al. Filed Date: 2/21/12. Accession Number: 20120221-5193. Comments Due: 5 p.m...

  2. How To Succeed in Promoting Your Web Site: The Impact of Search Engine Registration on Retrieval of a World Wide Web Site.

    ERIC Educational Resources Information Center

    Tunender, Heather; Ervin, Jane

    1998-01-01

    Character strings were planted in a World Wide Web site (Project Whistlestop) to test indexing and retrieval rates of five Web search tools (Lycos, infoseek, AltaVista, Yahoo, Excite). It was found that search tools indexed few of the planted character strings, none indexed the META descriptor tag, and only Excite indexed into the 3rd-4th site…

  3. Search Engines: A Primer on Finding Information on the World Wide Web.

    ERIC Educational Resources Information Center

    Maddux, Cleborne

    1996-01-01

    Presents an annotated list of several World Wide Web search engines, including Yahoo, Infoseek, Alta Vista, Magellan, Lycos, Webcrawler, Excite, Deja News, and the LISZT Directory of discussion groups. Uniform Resource Locators (URLs) are included. Discussion assesses performance and describes rules and syntax for refining or limiting a search.…

  4. Ground-water withdrawals and changes in water levels in the Houston District, Texas

    USGS Publications Warehouse

    Gabrysch, R.K.

    1982-01-01

    No significant changes occurred in the chloride concentration in water from wells in the Alta Loma area during 1975-79. The concentration of chloride in water from a well completed in the middle part of the Chicot aquifer at Hitchcock is increasing, probably because of updip migration of the freshwater-saltwater interface.

  5. Taming the Information Jungle with WWW Search Engines.

    ERIC Educational Resources Information Center

    Repman, Judi; And Others

    1997-01-01

    Because searching the Web with different engines often produces different results, the best strategy is to learn how each engine works. Discusses comparing search engines; qualities to consider (ease of use, relevance of hits, and speed); and six of the most popular search tools (Yahoo, Magellan. InfoSeek, Alta Vista, Lycos, and Excite). Lists…

  6. Using Search Engines with ESL Students.

    ERIC Educational Resources Information Center

    Kantor, Joan Schneider

    1998-01-01

    Presents a lesson that introduces search engines to high intermediate-level English-as-a-Second-Language students in grades 6-12. Over several days, students learn how to use three search engines (infoseek, AltaVista, and Yahoo!) to search the Internet for information effectively. Students can work together online to create a customized list of…

  7. Where Do I Find It?--An Internet Glossary.

    ERIC Educational Resources Information Center

    Del Monte, Erin; Manso, Angela

    2001-01-01

    Lists 13 different Internet search engines that might be of interest to educators, including: AOL Search, Alta Vista, Google, Lycos, Northern Light, and Yahoo. Gives a brief description of each search engine's capabilities, strengths, and weaknesses and includes Web addresses of U.S. government offices, including the U.S. Department of Education.…

  8. Obesity, Poverty, and Participation in Nutrition Assistance Programs. Family Programs. Report No. FSP-04-PO.

    ERIC Educational Resources Information Center

    Linz, Paul; Lee, Michael; Bell, Loren

    2005-01-01

    In September 2003, the U. S. Department of Agriculture (USDA) Food and Nutrition Service (FNS) contracted with ALTA Systems to conduct a project with the goal of providing a comprehensive overview of the relationship between poverty, program participation and obesity by conducting an in depth literature review; and convening an expert panel. The…

  9. Nitrogen Rings and Cages Stabilized by Metallic Atoms

    DTIC Science & Technology

    2009-12-18

    1 UNIVERSIDAD DE GUANAJUATO DEPARTAMENTO DE QUIMICA DIVISION DE CIENCIAS NATURALES Y EXACTAS Dr. Gabriel Merino NORIA ALTA s/n...lithium atoms is to provide the precise number of electrons to the central Si5 unit. This is confirmed by the magnetic properties, which show that

  10. Find Good Sources of Online Images: A Picture Doesn't Have to Be a Thousand Searches

    ERIC Educational Resources Information Center

    Branzburg, Jeffrey

    2006-01-01

    The Internet is a natural place to look for images that teachers can use in lessons and students can use in projects and assignments. Google, Yahoo, AltaVista--many of these popular search engines offer image searching. Usually there is a tab to click at the top of the page to select image searching; just enter a search term and go! However, this…

  11. Web Indexing with Meta Fields: A Survey of Web Objects in Polymer Chemistry.

    ERIC Educational Resources Information Center

    Qin, Jian; Wesley, Kathryn

    1998-01-01

    This survey of 1037 World Wide Web objects on polymer chemistry collected by four search engines (AltaVista, Lycos, Excite, Webcrawler) examined document information and use of meta fields, images, and chemical names. Found that the use of meta fields was not widespread and that knowledge of meta fields in HTML varied among Web object creators.…

  12. Portugal.

    ERIC Educational Resources Information Center

    Eckles, David; Toro, Leonor, Ed.

    Brief information is provided on the region, climate, agriculture and industry of 10 provinces in Portugal: Tras-os-Montes e Alto Douro, located in Portugal's northeastern region; Beira Alta, the province with Portugal's highest elevation point; Beira Baixa, one of Portugal's poorest regions; Beira Litoral, located in central Portugal along the…

  13. Savoia seaplane S.55 : military or commercial

    NASA Technical Reports Server (NTRS)

    1927-01-01

    The S.55 is a two engine twin hull seaplane built by Societa Idrovolanti Alta Italia (Seaplane Company of Upper Italy). The S.55 (Santa Maria) is to be used for an around the world flight In 1927. It will have a useful load of 7,500 lbs. and a cruising speed of 100 MPH.

  14. Sequoyah Foreign Language Translation System - Business Case Analysis

    DTIC Science & Technology

    2007-12-01

    The SYSTRAN translation system is used to power both Google translate and AltaVista’s Babel Fish. 27 Global Translations, a translation agency in...Machine_translation. 71 INITIAL DISTRIBUTION LIST 1. Defense Technical Information Center Ft. Belvoir, Virginia 2. Dudley Knox Library Naval

  15. Different effects of lipoteichoic acid from C. butyricum and S. aureus on inflammatory responses of HT-29 cells.

    PubMed

    Wang, Jinbo; Qi, Lili; Wu, Zhige; Mei, Lehe; Wang, Hengzheng

    2016-06-01

    Lipoteichoic acid (LTA) is an important cell wall component of Gram-positive bacteria and represents one of the most critical microbe-associated molecular pattern (MAMP) molecules. In this study, we isolated and purified LTA from Clostridium butyricum (bLTA) and compared its effects on the inflammatory responses of HT-29 cells with those of LTA from Staphylococcus aureus (aLTA). We also compared the effects of bLTA and aLTA on cell growth, proliferation, and apoptosis. The results showed that the length and saturation degree of the acyl chains in the two LTA molecules were obviously different. aLTA stimulated the phosphorylation of p65 and activated the NF-κB signaling pathway, inducing the expression and secretion of cytokines. Moreover, aLTA also inhibited the growth and proliferation of HT-29 cells and induced cell apoptosis. However, bLTA had no significant effects on the NF-κB signaling pathway in HT-29 cells and did not stimulate cellular inflammatory responses or induce apoptosis. These differences in activity may result from the different lengths and saturation degrees of the acyl fatty acid chains of the two LTA molecules. These differences may also account for the distinct effects elicited by probiotic bacteria and pathogenic bacteria on host cells. Copyright © 2016 Elsevier B.V. All rights reserved.

  16. Lipoteichoic acid isolated from Staphylococcus aureus induces both epithelial-mesenchymal transition and wound healing in HaCaT cells.

    PubMed

    Kim, Seongjae; Kim, Hyeoung-Eun; Kang, Boyeon; Lee, Youn-Woo; Kim, Hangeun; Chung, Dae Kyun

    2017-08-03

    Lipoteichoic acid (LTA), a cell wall component of gram-positive bacteria, is recognized by toll-like receptor (TLR) 2, expressed on certain mammalian cell surfaces, initiating signaling cascades that include nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and mitogen-activated protein kinase (MAPK). There are many structural and functional varieties of LTA, which vary according to the different species of gram-positive bacteria which produce them. In this study, we examined whether LTA isolated from Staphylococcus aureus (aLTA) affects the expression of junction proteins in keratinocytes. In HaCaT cells, tight junction-related gene expression was not affected by aLTA, while adherens junction-related gene expression was modified. High doses of aLTA induced the phosphorylation of extracellular signal-regulated protein kinases 1 and 2 (ERK1/2), which in turn induced the epithelial-mesenchymal transition (EMT) of HaCaT cells. When cells were given a low dose of aLTA, however, NF-κB was activated and the total cell population increased. Taken together, our study suggests that LTA from S. aureus infections in the skin may contribute both to the outbreak of EMT-mediated carcinogenesis and to the genesis of wound healing in a dose-dependent manner.

  17. High Altitude Atmospheric Investigations. Part II. Development of in-situ Experiments for Measurements in the D-Region of the Ionosphere and Their Results.

    DTIC Science & Technology

    1981-06-03

    solar flux data related to Aeronomy (Solar Cycle 20), COSPAR Technique manual Series, Manual No. 7, (Febr. 1978). 22 Sanchez Muniosguren, L.V...Estructura de la alta Mesosfera, Publicacion A-68, Servicio Meteorologico Nacional, Madrid (1977). 23 Becker W.: Personal communication 24 Rose G., and H.U

  18. Quality Dimensions of Internet Search Engines.

    ERIC Educational Resources Information Center

    Xie, M.; Wang, H.; Goh, T. N.

    1998-01-01

    Reviews commonly used search engines (AltaVista, Excite, infoseek, Lycos, HotBot, WebCrawler), focusing on existing comparative studies; considers quality dimensions from the customer's point of view based on a SERVQUAL framework; and groups these quality expectations in five dimensions: tangibles, reliability, responsiveness, assurance, and…

  19. The Honeymoon Is Over: Leading the Way to Lasting Search Habits.

    ERIC Educational Resources Information Center

    Pierson, Melissa

    1997-01-01

    To become efficient Internet searchers, students and teachers need to learn online search skills. Discusses hierarchical subject directories (Yahoo) and search engines (Excite, Lycos, Alta Vista, HotBot); lists top search engines and their universal resource locators (URL). Provides examples of search strings; outlines search tips, and a…

  20. "Just the Answers, Please": Choosing a Web Search Service.

    ERIC Educational Resources Information Center

    Feldman, Susan

    1997-01-01

    Presents guidelines for selecting World Wide Web search engines. Real-life questions were used to test six search engines. Queries sought company information, product reviews, medical information, foreign information, technical reports, and current events. Compares performance and features of AltaVista, Excite, HotBot, Infoseek, Lycos, and Open…

  1. Using the Internet in Career Education. Practice Application Brief No. 1.

    ERIC Educational Resources Information Center

    Wagner, Judith O.

    The World Wide Web has a wealth of information on career planning, individual jobs, and job search methods that counselors and teachers can use. Search engines such as Yahoo! and Magellan, organized like library tools, and engines such as AltaVista and HotBot search words or phrases. Web indexes offer a variety of features. The criteria for…

  2. Staleness Among Web Search Engines.

    ERIC Educational Resources Information Center

    Koehler, Wallace

    1998-01-01

    Describes a study of four major Web search engines that tested for staleness, a condition when a significant number of the hits it returns point to Web pages or server-level domains (SLD) that are no longer viable. Results of tests of URLs with AltaVista, HotBot, InfoSeek, and Open Text are discussed. (Author/LRW)

  3. How To Do Field Searching in Web Search Engines: A Field Trip.

    ERIC Educational Resources Information Center

    Hock, Ran

    1998-01-01

    Describes the field search capabilities of selected Web search engines (AltaVista, HotBot, Infoseek, Lycos, Yahoo!) and includes a chart outlining what fields (date, title, URL, images, audio, video, links, page depth) are searchable, where to go on the page to search them, the syntax required (if any), and how field search queries are entered.…

  4. 75 FR 81599 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-28

    ...: Wolverine Creek Energy LLC. Description: Triennial Report of Wolverine Creek Energy LLC. Filed Date: 12/20...: Northeast Utilities Service Company, The Connecticut Light and Power Company. Description: NUSCO's Section... Numbers: EG11-36-000. Applicants: Alta Wind II Owner Lessor C. Description: Notice of Self-Certification...

  5. Reliability and interobserver variability in radiological patellar height ratios.

    PubMed

    Seil, R; Müller, B; Georg, T; Kohn, D; Rupp, S

    2000-01-01

    This study evaluated the reliability and interobserver variability of five patellar height ratios as measured by two examiners on standard radiographs: Insall-Salvati (IS), modified Insall-Salvati (MIS), Blackburne-Peel (BP), Caton-Deschamps (CD), and Labelle-Laurin (LL). Plain lateral radiographs with a knee flexion angle of 20 degrees for IS, MIS, BP, and CD ratios and 90 degrees for the LL method of 22 knees of 21 patients with varying pathological knee conditions were analyzed. Statistical results revealed a low interobserver variability with high correlation coefficients (0.86 for IS, 0.82 for MIS, 0.86 for BP, 0.92 for CD, and 0.81 for LL; P > 0.3) and low mean interobserver errors. However, regarding the reliability of the radiographic results of the different methods for patella alta, baja, or norma we found varying results in 68% of the patients. In two patients the patellar height was classified as alta, norma, or baja depending on the ratio used. Regarding the definitions of patellar height used by the authors of these methods, we found the lowest number of normal patellae with the IS ratio and no patella alta for the CD ratio. The LL method revealed the highest number of patella alta. The BP ratio showed intermediate results for both patella alta and baja, being the most moderate method. This study showed that there was a good interobserver reliability for the evaluation of patellar height according to the common radiological ratios. However, the high frequency of differing results between the different radiographic ratios showed that patellar height classification as "alta," "norma," or "baja" depends heavily on the chosen index. The differing results were due mainly to the normative patellar height data and to anatomical differences. Based on these findings we recommend a ratio using the articular surface of the patella in relation to the joint line. We recommend the BP method because it revealed the lowest interobserver variability and discriminated

  6. Influence of patellar position on the knee extensor mechanism in normal and crouched walking.

    PubMed

    Lenhart, Rachel L; Brandon, Scott C E; Smith, Colin R; Novacheck, Tom F; Schwartz, Michael H; Thelen, Darryl G

    2017-01-25

    Patella alta is common in cerebral palsy, especially in patients with crouch gait. Correction of patella alta has been advocated in the treatment of crouch, however the appropriate degree of correction and the implications for knee extensor function remain unclear. Therefore, the goal of this study was to assess the impact of patellar position on quadriceps and patellar tendon forces during normal and crouch gait. To this end, a lower extremity musculoskeletal model with a novel 12 degree of freedom knee joint was used to simulate normal gait in a healthy child, as well as mild (23 deg min knee flexion in stance), moderate (41 deg), and severe (67 deg) crouch gait in three children with cerebral palsy. The simulations revealed that quadriceps and patellar tendon forces increase dramatically with crouch, and are modulated by patellar position. For example with a normal patellar tendon position, peak patellar tendon forces were 0.7 times body weight in normal walking, but reached 2.2, 3.2 and 5.4 times body weight in mild, moderate and severe crouch. Moderate patella alta acted to reduce quadriceps and patellar tendon loads in crouch gait, due to an enhancement of the patellar tendon moment arms with alta in a flexed knee. In contrast, patella baja reduced the patellar tendon moment arm in a flexed knee and thus induced an increase in the patellar tendon loads needed to walk in crouch. Functionally, these results suggest that patella baja could also compromise knee extensor function for other flexed knee activities such as chair rise and stair climbing. The findings are important to consider when using surgical approaches for correcting patella alta in children who exhibit crouch gait patterns. Copyright © 2016 Elsevier Ltd. All rights reserved.

  7. Prevalence of metilentetrahidrofolate reductase C677T polymorphism, consumption of vitamins B6, B9, B12 and determination of lipidic hydroperoxides in obese and normal weight Mexican population.

    PubMed

    Hernández-Guerrero, César; Romo-Palafox, Inés; Díaz-Gutiérrez, Mary Carmen; Iturbe-García, Mariana; Texcahua-Salazar, Alejandra; Pérez-Lizaur, Ana Bertha

    2013-11-01

    Introducción. El estrés oxidativo es un factor clave en el inicio y el desarrollo de las comorbilidades de la obesidad. La enzima metiltetrahidrofolato reductasa (MTHFR) participa en el metabolismo del folato con la acción de las vitaminas B9 y B12. El gen MTHFR puede presentar un polimorfismo de un solo nucleótido (SNP) en la posición 677 (C677T), que puede promover homocisteinemia asociada a la producción de radicales libres. Objetivo. Determinar la frecuencia del SNP C677T de la MTHFR, evaluar el consumo de vitaminas B6, B9, B12 y determinar la concentración de hidroperóxidos lipídicos (LOOH) en plasma en un grupo de obesos y testigo. Métodos. Se clasificaron 128 mexicanos mestizos de acuerdo a su índice de masa corporal en normopeso (Nw; n=75) y obesidad (ObeI-III; n=53). Se identificó el SNP C677T de la MTHFR mediante la técnica de PCR-RFLP. El consumo de vitaminas B6, B9 y B12 se evaluó mediante una encuesta validada. Se determinaron LOOH como un indicador de estrés oxidativo periférico. Resultados. No hubo diferencia estadística significativa en la frecuencia del polimorfismo C677T entre homocigotos TT en Nw (0.19) y ObeI-III (0.25). La frecuencia del alelo T en Nw fue de 0.45, y 0.51 en el grupo ObeI-III. Los LOOH mostraron diferencia estadística significativa (p.

  8. PubMed

    Jiménez Flores, Paloma; Jiménez Cruz, Arturo; Bacardi Gascón, Montserrat

    2017-03-30

    Introducción: la diferencia de la percepción entre la silueta percibida y la deseada se ha definido como insatisfacción con la imagen corporal (IMCO).Objetivo: evaluar los métodos utilizados para medir la IMCO y la frecuencia de la IMCO en niños y adolescentes.Metodología: se buscaron artículos registrados en las bases de datos de PubMed, EBSCOhost y Scielo, de estudios transversales en inglés y español, que valoraran la IMCO en niños y adolescentes publicados de abril de 2010 al mes de abril de 2015. Se registraron, edad, sexo, tamaño muestral, estado de peso, tipo de método para valorar la IMCO y estimación de la IMCO.Resultados: cumplieron con los criterios de inclusión 16 estudios que valoraron la IMCO en niños y adolescentes de 5 a 19 años de edad. De los artículos analizados se encontraron 9 métodos de valoración de la IMCO. En la mayoría se realizaron pruebas de estabilidad temporal y validez. La frecuencia de IMCO por tener sobrepeso u obesidad, osciló de 44% a 83% y por bajo peso, de 1,7% a 37%. La IMCO aumentó de acuerdo al IMC, y en algunos estudios se asoció con la edad. Fue más frecuente en las mujeres, y en algunos casos se presenta IMCO en los niños delgados.Conclusión: la IMCO se presenta con mayor frecuencia en el sexo femenino y se asocia positivamente con el IMC. A pesar de la variedad de métodos utilizados para evaluar la IMCO, los resultados son consistentes.

  9. Estudio del CH interestelar

    NASA Astrophysics Data System (ADS)

    Olano, C.; Lemarchand, G.; Sanz, A. J.; Bava, J. A.

    El objetivo principal de este proyecto consiste en el estudio de la distribución y abundancia del CH en nubes interestelares a través de la observación de las líneas hiperfinas del CH en 3,3 GHz. El CH es una molécula de amplia distribución en el espacio interestelar y una de las pocas especies que han sido observadas tanto con técnicas de radio como ópticas. Desde el punto de vista tecnológico se ha desarrollado un cabezal de receptor que permitirá la realización de observaciones polarimétricas en la frecuencia de 3,3 GHz, con una temperatura del sistema de 60 K y un ancho de banda de 140 MHz, y que será instalado en el foco primario de la antena parabólica del IAR. El cabezal del receptor es capaz de detectar señales polarizadas, separando las componentes de polarización circular derecha e izquierda. Para tal fin el cabezal consta de dos ramas receptoras que amplificarán la señal y la trasladarán a una frecuencia más baja (frecuencia intermedia), permitiendo de esa forma un mejor transporte de la señal a la sala de control para su posterior procesamiento. El receptor además de tener características polarimétricas, podrá ser usado en el continuo y en la línea, utilizando las ventajas observacionales y de procesamiento de señal que actualmente posee el IAR.

  10. [Skin reactivity frequency to aeroallergens in patients with clinical symptoms of allergic disease].

    PubMed

    Rojas-Méndez, Isabel Cristina; Arana-Muñoz, Oswaldo; López-García, Aída Inés; Rivero-Yeverino, Daniela; Caballero-López, Chrystopherson Gengyny; Papaqui-Tapia, Sergio; Camero-Martínez, Heriberto; Vázquez-Rojas, Elizabeth

    2017-01-01

    Antecedentes: El diagnóstico de las enfermedades alérgicas debe basarse en la historia clínica alergológica adecuada y en una prueba inmunológica de sensibilización; la de mayor sensibilidad y especificidad es la prueba cutánea por punción. Objetivo: Determinar la frecuencia de la reactividad cutánea hacia aeroalérgenos, por grupos etarios, en pacientes del Servicio de Alergia e Inmunología Clínica del Hospital Universitario de Puebla, México. Métodos: Se realizó estudio transversal que incluyó a pacientes de 2 a 64 años de edad, con síntomas sugestivos de enfermedad alérgica, en quienes se realizaron pruebas cutáneas con aeroalérgenos; los criterios diagnósticos fueron los de las guías internacionales. Se calcularon frecuencias, porcentajes y medidas de dispersión. Resultados: De 173 pacientes, 63 % fue del sexo femenino. La edad media fue de 22.3 años. La frecuencia de la reactividad cutánea para Quercus sp. fue 12.72 %, Periplaneta americana 9.83 %, Dermatophagoides farinae 9.25 %, Cynodon dactylon 8.09 %, Blatella germanica 8.09 %, Holcus halepensis 6.94 %, Dermatophagoides pteronyssinus 6.36 %, Schinus molle 5.78 %, Fraxinus uhdei 5.20 %, Lolium perenne 5.20 %, Ambrosia eliator 5.20 % y Artemisa tridentata 4.62 %. Conclusión: Los Dermatophagoides son los aeroalérgenos más identificados, pero en el presente estudio fue más común un polen, probablemente debido a factores geográficos-medioambientales, aunque no fue así en el análisis por grupos etarios.

  11. [Food-related lifestyles and eating habits inside and outside the home in the Metropolitan Region of Santiago, Chile].

    PubMed

    Schnettler, Berta; Peña, Juan Pablo; Mora, Marcos; Miranda, Horacio; Sepúlveda, José; Denegri, Marianela; Lobos, Germán

    2013-01-01

    Objetivo: Distinguir tipologías de consumidores en base a su estilo de vida en relación a la alimentación en las principales comunas de la Región Metropolitana de Santiago, Chile, y caracterizarlas según sus hábitos de consumo de alimentos dentro y fuera del hogar, características sociodemográficas y su nivel de satisfacción con su alimentación. Material y método: Se aplicó un cuestionario estructurado a una muestra de 951 personas en las principales comunas de la Región Metropolitana de Santiago (más de 100.000 habitantes). El instrumento de recogida de información incluyó una adaptación del cuestionario de estilos de vida en relación a la alimentación (FRL) y la escala SWFL (Satisfaction with Food-related Life). Se consultaron los hábitos de consumo de alimentos dentro y fuera del hogar y variables de clasificación sociodemográfica de los encuestados. Resultados: Mediante análisis cluster se distinguieron cinco tipologías con diferencias significativas en los cinco componentes obtenidos del FRL, con análisis factorial de componentes principales. Las tipologías presentaron distinto perfil de género, edad y nivel socioeconómico y difirieron en los puntajes obtenidos en la SWFL. Se diferenciaron en la frecuencia en que la persona almuerza, toma once y cena en su hogar. Respecto a las comidas fuera del hogar, las tipologías se distinguieron según la frecuencia de comidas en restaurantes, locales de comida rápida y en la compra de comida preparada. Conclusiones: Un estilo de vida en relación a la alimentación con baja implicación y disfrute de los alimentos se asocia con un mayor nivel socioeconómico y menor edad de las personas. Adicionalmente, se asocia con comportamientos alimentarios poco saludables y no beneficiosos para las personas, como una mayor frecuencia de comidas en restaurantes y de compra de comida preparada, junto a una menor frecuencia de comidas en el hogar, lo que estaría influyendo en un nivel inferior de

  12. [Isolated bacteria from nasal cultures. Are they important in patients with acute leukemia?].

    PubMed

    Barranco-Lampón, Gilberto; Mendoza-García, Carlos Alberto; Cabrera-Osuna, Silvia; Olarte-Carrillo, Irma; Ventura, Yanet; Gutiérrez-Romero, Mario; Martínez-Murillo, Carlos; Martínez-Tovar, Adolfos; Ramos-Peñafiel, Christian Omar

    2014-01-01

    INTRODUCCIÓN: la colonización nasal por Staphylcoccus epidermidis y Staphylococcus aureus es frecuente y se ha relacionado con bacteremia en huéspedes inmunocomprometidos. En la investigación que se presenta, los objetivos fueron determinar la frecuencia de cepas que colonizan la mucosa nasal en pacientes en tratamiento de leucemia aguda y su relación con los cultivos de sangre periférica. MÉTODOS: estudio retrospectivo, observacional, transversal, retrolectivo de cultivos nasales obtenidos durante cuatro semanas. La relación con los hemocultivos se estableció mediante chi cuadrada; se calculó razón de momios.

  13. FUENTES Infrarrojas EN 2.2 lim EN la Region Asociada AL GLOBULO ORI-1-2

    NASA Astrophysics Data System (ADS)

    Cruz-Gonzalez, J.; Carrasco, L.; Ramos, M. P.

    1987-05-01

    Se ha mapeado en el cercano infrarrojo a 2.2 micras, una región de 2 x 5 minutos de arco asociada al glóbulo ORI-I-2. Se ha detectado emisión infrarroja de fuentes puntuales y emisión extendida de bajo brillo superficial. Se discute la asociación de fuentes de 2.2 micras con la emisión detectada en IRAS y en moléculas de radio frecuencias.

  14. Estudio Sobre Portadores Cronicos de Salmonellas en Manipuladores de Alimentos de la Ciudad de Iquitos (Study of Chronic Salmonella Carriers in Food Handlers in the City of Iquitos)

    DTIC Science & Technology

    1990-01-01

    manipuladores de alimentos en estudio. 779 (77.90%) fueron del sexo femcnino y 221 (22.10%) del sexo masculino. siendo el mayor porcentaje mujeres (234 - 30.04...papel de ios portadlores cr6- Woos en 460 mujeres dadas de alt. del hospital de Chile, encontrandose 34 porta- dores o sea 7.4 % excediindose las...4 sujetos 3.6 % portadores cr6nicos de Salmoncilas. 1S0 En Argentina 1974, se inves:,16 la frecuencia de Saiimoncilas en 146 manipulado- res de

  15. Femtoquímica: reacciones en tiempo real, ?`Posibles aplicaciones en Astrofísica?

    NASA Astrophysics Data System (ADS)

    Douhal, Abderrazzak

    En esta conferencia, se mostrarán resultados de medidas en escala del femtosegundo por la primera vez obtenidos en España. Los sistemas elegidos muestran dinámicas que varían de 50 fs a centenas de picosegundo. La técnica usada (sumación de frecuencia) permite ver como ocurren las reacciones químicas y biológicas en tiempo real de reacciones. Su aplicación al estudio de las reacciones fotónicas en el espacio es evidente.

  16. Gender- and hydration- associated differences in the physiological response to spinning.

    PubMed

    Ramos-Jiménez, Arnulfo; Hernández-Torres, Rosa Patricia; Wall-Medrano, Abraham; Torres-Durán, Patricia Victoria; Juárez-Oropeza, Marco Antonio; Viloria, María; Villalobos-Molina, Rafael

    2014-03-01

    Introducción: La información sobre las diferencias relacionadas con el sexo en cuanto a la hidratación de las personas deportistas, así como sobre los efectos de la hidratación sobre el rendimiento, especialmente en deportes de interior, es escasa e inconsistente. Objetivo: Determinar las diferencias fisiológicas entre sexos durante el ejercicio físico en el interior con y sin hidratación. Métodos: Veintiuna personas deportistas (12 hombres y 9 mujeres) participaron en tres protocolos de hidra tación, no secuenciales, controlados y distribuidos al azar, que incluían falta de hidratación, hidratación con agua corriente e hidratación con una bebida para deportistas (ajustando el volumen a cada individuo cada 15 minutos), durante 90 minutos de ejercicio spinning. Las variables de respuesta incluían masa corporal, temperatura corporal, frecuencia cardíaca y presión sanguínea. Resultados: Durante el ejercicio sin hidratación los hombres y mujeres perdieron cerca de un 2 % de la masa corporal y mostraron una temperatura corporal (~0,2° C), presión sanguínea (~4 mm Hg) y frecuencia cardíaca (~7 latidos/min) superiores en comparación con los ejercicios sin hidratación. La temperatura corporal y la presión sanguínea fueron superiores en hombres que en mujeres durante el ejercicio sin hidratación, diferencias que no se observaron durante el ejercicio con hidratación. Entre el 42 y el 99 % de la varianza de la temperatura corporal, la presión sanguínea y la frecuencia cardíaca pudo explicarse por las características físicas de los individuos y el trabajo realizado. Conclusiones: Durante el ejercicio con hidratación (ya fuese con agua o una bebida para deportistas), la respuesta fisiológica fue similar en ambos sexos. El ejercicio sin hidratación produjo estrés físico que pudo ser evitado con cualquiera de los dos tipos de líquidos (el agua corriente fue suficiente). Las diferencias en la respuesta fisiológica al spinning (temperatura

  17. SCHOOL DIETARY HABITS AND INCIDENCE OF DENTAL CARIES.

    PubMed

    Monteagudo, Celia; Téllez, Francisco; Heras-González, Leticia; Ibañez-Peinado, Diana; Mariscal-Arcas, Miguel; Olea-Serrano, Fatima

    2015-07-01

    Introducción: los hábitos alimentarios saludables influyen sobre la salud oral. El tratamiento de la caries comprende la restauración dental con selladores y composites dentales, la mayoría con bisfenol A (BPA). Hipótesis: a) el desayuno y hábitos de higiene oral son factores importantes en el desarrollo de caries; b) el tratamiento de la caries con epoxirresinas conlleva riesgo de exposición oral a monómeros plásticos. Objetivo: relacionar la ingesta del desayuno y los hábitos de higiene oral con la caries dental y determinar la presencia de selladores/composites como fuentes potenciales de exposición al BPA. Métodos: se analizaron 582 niños/as en edad escolar de Granada (sur de España) de 7 años de edad (7,55 [0,64] años). Se empleó un cuestionario de frecuencia de consumo de alimentos, 3 recordatorios de 24 h y variables de estilo de vida, incluyendo la higiene bucodental. La calidad del desayuno fue estimada con el Breakfast Quality Index (BQI). Resultados: se detectó un 21,7% de caries. El valor medio del BQI fue 5,18 (1,29). El 24% de la población realizó un desayuno con alimentos ricos en azúcares simples (> 5% de la energía total), asociado significativamente con la frecuencia de caries en el análisis de regresión logística. El 35,8% de los participantes tomaron galletas; asociado significativamente con la frecuencia de caries. La ingesta de productos de panadería, cereales y lácteos mostró una asociación inversamente significativa con la frecuencia de caries. Conclusión: se necesitan más investigaciones para aclarar el papel de la dieta en la caries y el riesgo de exposición a xenobióticos estrogénicos, como el BPA.

  18. Curvas de rotación - Atlas

    NASA Astrophysics Data System (ADS)

    Martín, C.

    Se está elaborando un atlas con imágenes y datos publicados en las revistas principales por diversos autores, de las curvas de rotación en galaxias observadas en diferentes frecuencias. Las curvas de rotación constituyen uno de los medios más apropiados para el estudio de las diferencias cinemáticas entre los diversos componentes y quizá la mejor prueba observacional de la existencia de materia oscura en el universo. Este atlas tiene el propósito de servir como una guía cualitativa y cuantitativa para estos estudios.

  19. Sistemas de cúmulos globulares extragalácticos

    NASA Astrophysics Data System (ADS)

    Forte, J. C.

    Se describen las características de los sistemas de cúmulos globulares asociados a galaxias elípticas en una variedad de medios y, en particular, aquellas vinculadas con la distribución espacial, frecuencia específica y composición química. Esta discusión se hace dentro de un conjunto de esquemas orientados a explicar las primeras fases de la formación de las galaxias dominantes en cúmulos y del rol de los sistemas de cúmulos globulares en esos procesos.

  20. Risk Factors and Time to Recurrent Ipsilateral and Contralateral Patellar Dislocations.

    PubMed

    Christensen, Tyson C; Sanders, Thomas L; Pareek, Ayoosh; Mohan, Rohith; Dahm, Diane L; Krych, Aaron J

    2017-07-01

    Previous studies have reported variable rates of recurrent lateral patellar instability mainly because of limited cohort sizes. In addition, there is currently a lack of information on contralateral patellar instability. To evaluate the rate of recurrent ipsilateral patellar dislocations and contralateral patellar dislocations after a first-time lateral patellar dislocation. Additionally, risk factors associated with recurrent dislocations (ipsilateral or contralateral) and time to recurrence were investigated. Cohort study; Level of evidence, 3. This population-based study included 584 patients with a first-time lateral patellar dislocation occurring between 1990 and 2010. A retrospective review was conducted to gather information about the injury, subsequent dislocations (ipsilateral or contralateral), and structural characteristics including trochlear dysplasia, patella alta, and tibial tubercle to trochlear groove (TT-TG) distance. Risk factors were assessed to delineate associations with subsequent dislocations and time to recurrence. At a mean follow-up of 12.4 years, 173 patients had ipsilateral recurrence, and 25 patients had a subsequent contralateral dislocation. At 20 years, the cumulative incidence of ipsilateral recurrence was 36.0%, while the cumulative incidence of contralateral dislocations was 5.4%. Trochlear dysplasia (odds ratio [OR], 18.1), patella alta (OR, 10.4), age <18 years at the time of the first dislocation (OR, 2.4), elevated TT-TG distance (OR, 2.1), and female sex (OR, 1.5) were associated with recurrent ipsilateral dislocations. Time to recurrence was significantly decreased in patients with trochlear dysplasia (23.0 months earlier time to recurrence; P < .001), elevated TT-TG distance (18.5 months; P < .001), patella alta (16.4 months; P = .001), and age <18 years at the time of the first dislocation (15.4 months; P < .001). Risk factors for subsequent contralateral dislocations included patella alta and trochlear dysplasia. At 20

  1. Órbitas caóticas en satelites galácticos

    NASA Astrophysics Data System (ADS)

    Carpintero, D. D.; Muzzio, J. C.; Vergne, M. M.; Wachlin, F. C.

    En trabajos anteriores investigamos las órbitas de estrellas que forman los satelites galácticos utilizando análisis de frecuencias. Su uso estaba plenamente justificado por su velocidad y la gran información que brinda, amén de haber dado resultados muy concordantes con los exponentes de Liapunov. Sin embargo, más recientemente, encontramos algunos problemas en la utilización del análisis de frecuencias en sistemas de referencia rotantes (como se utilizan para los satélites), por lo que en este trabajo rehicimos nuestras investigaciones previas utilizando exclusivamente exponentes de Liapunov. Algunas conclusiones anteriores se han confirmado, en tanto que otras deben modificarse. Además, los nuevos resultados muestran que las escalas de tiempo de los procesos caóticos en los satélites galácticos son comparables a, o más cortas que, las escalas de tiempo de otros procesos dinámicos característicos de estos objetos.

  2. Sarcopenia in community-dwelling persons over 60 years of age from a northern spanish city: relationship between diagnostic criteria and association with the functional performance.

    PubMed

    Patiño Villada, Fredy Alonso; Arboleda Franco, Santiago Adolfo; de Paz Fernández, José Antonio

    2015-05-01

    Introducción: La sarcopenia es un problema reconocido en la personas mayores. Actualmente, su diagnóstico va más allá de una simple pérdida de la masa muscular. El objetivo de este estudio fue determinar la frecuencia de sarcopenia definida por el European Working Group on Sarcopenia in Older People (EWGSOP), en personas mayores de 60 años con vida independiente de una ciudad del norte de España. Además, el estudio comparó los criterios diagnósticos para sarcopenia y evaluó las diferencias en el rendimiento funcional de acuerdo a ellos. Métodos: Se realizó un estudio transversal con 258 personas de ambos géneros, pertenecientes a centros comunitarios. La composición corporal se evaluó con absorciometría dual por rayos-X. El índice de masa magra apendicular (IMMA), la fuerza de prensión manual (FPM) y el 8 foot up–and–go test (8f–UG) fueron empleados para el diagnóstico de sarcopenia. Resultados: La frecuencia de sarcopenia fue de 2.4% (n=6). En las mujeres, el IMMA se correlacionó con el FPM (r= 0.164, p.

  3. [Return to work in patients with heart disease after cardiac rehabilitation].

    PubMed

    Huichan-Muñoz, Valeria; Justiniano-Cordero, Samuel; Solís-Hernández, José Luis; Rodríguez-Ábrego, Gabriela; Millán-Hernández, Edgar; Rojano-Mejía, David

    2016-01-01

    Introducción: en un estudio observacional, retrospectivo evaluamos la frecuencia, presentación clínica y tratamiento de linfocele en pacientes pediátricos con trasplante renal. Métodos: de enero de 2004 a enero de 2009 se realizaron 242 trasplantes renales, 197 de donantes vivos y 45 trasplantes de donantes cadavéricos. La técnica quirúrgica utilizada fue la habitual y la de los implantes uretrales fue la técnica Ricard modificada. El tratamiento fue por punción cutánea y drenajes internos mediante una ventana peritoneal laparoscópica. Resultados: se diagnosticaron siete pacientes con linfoceles (2.9 % con un IC 95 % 0.6-5.2 %). Una paciente del sexo femenino y seis del sexo masculino, todos fueron sometidos a drenajes por punción cutánea, seis pacientes fueron recidivados y tratados exitosamente por drenaje interno mediante una ventana peritoneal laparoscópica. Conclusiones: nuestra frecuencia es igual a la reportada en otros estudios (0.6-18 %). El drenaje interno mediante la ventana peritoneal laparoscópica parece ser lo más apropiado en pacientes pediátricos.

  4. [Lymphocele surgical treatment in pediatric kidney transplantation].

    PubMed

    Aurelus, Pierre Jean; Ortiz, Roberto Carlos; Rendón-Macías, Mario Enrique; Ortega-Rodríguez, Ma C; De la Cruz-Yañiz, Hermilo; Yamamoto-Nagano, Alfonso; Torres-Díaz, José Salustiano

    2016-01-01

    Introducción: en un estudio observacional, retrospectivo evaluamos la frecuencia, presentación clínica y tratamiento de linfocele en pacientes pediátricos con trasplante renal. Métodos: de enero de 2004 a enero de 2009 se realizaron 242 trasplantes renales, 197 de donantes vivos y 45 trasplantes de donantes cadavéricos. La técnica quirúrgica utilizada fue la habitual y la de los implantes uretrales fue la técnica Ricard modificada. El tratamiento fue por punción cutánea y drenajes internos mediante una ventana peritoneal laparoscópica. Resultados: se diagnosticaron siete pacientes con linfoceles (2.9 % con un IC 95 % 0.6-5.2 %). Una paciente del sexo femenino y seis del sexo masculino, todos fueron sometidos a drenajes por punción cutánea, seis pacientes fueron recidivados y tratados exitosamente por drenaje interno mediante una ventana peritoneal laparoscópica. Conclusiones: nuestra frecuencia es igual a la reportada en otros estudios (0.6-18 %). El drenaje interno mediante la ventana peritoneal laparoscópica parece ser lo más apropiado en pacientes pediátricos.

  5. La opacidad atmosférica del CASLEO a ondas milimétricas

    NASA Astrophysics Data System (ADS)

    Bareilles, F.; Olalde, J.; Picardo, C.; Guarrera, L.; Arnal, E. M.; Morras, R.; Perilli, D.; Salazar, P.

    Mediante el uso de un radiómetro que trabaja en la frecuencia de 210 GHz, se han realizado mediciones de la transparencia de la atmósfera a esa frecuencia. Los sitios en los que se han realizado las medidas, corresponden al Cerro Negro de la Tina (Cerro Burek), ubicado a unos 2650 m de altura, y a un sitio ubicado a unos 3400 m de altura, localizado en la Pampa del Jarillal. Las mediciones forman parte de una campaña que cubrirá un lapso de tres años, durante la cual se caracterizan distintas zonas ubicadas en la cordillera. Los resultados que se comunican fueron obtenidos durante el período diciembre de 2002 a septiembre de 2003. Se realiza una comparación preliminar entre la opacidad atmosférica de los lugares mencionados y aquélla de otros sitios en los que se encuentran instaladas facilidades observacionales que operan en la banda milimétrica y submilimétrica del espectro.

  6. Association between ovine protein polymorphisms and geographical variables in Europe and south-west Asia.

    PubMed

    Ordas, J G; Carriedo, J A

    1997-01-12

    The spatial distribution of six blood-protein polymorphisms in European and south-west Asian ovine breeds was analysed. Latitudinal clines were found for haemoglobin and transferrin loci. The respective F(ST) values are not significantly greater than those for protein-X, esterase, carbonic anhydrase, and albumin, where gene frequencies are not associated with latitude. The results suggest that historical processes of gene flow, rather than adaptation to different environments, have played a major role in determining the observed lives of gene frequencies. RESUMEN: Asociación entre polimorfismos proteicos ovinos y variables geográficas en Europa y sudoeste de Asia Se ha analizado la distribución espacial de seis polimorfismos proteicos sanguíneos en razas ovinas de Europa y del sudoeste de Asia. La hemoglobina y la transferrina muestran clinas latitudinales. Los valores de F(ST) para estos dos loci no son significativamente más grandes que los de la proteína-X, esterasa, anhidrasa carbónica y albúmina, cuyas frecuencias génicas no están asociadas con la latitud. Los resultados sugieren que la distribución de las frecuencias génicas de la hemoglobina y la transferrina se debe a procesos históricos de flujo génico y deriva genética. 1997 Blackwell Verlag GmbH.

  7. [Musical hallucinations: perpetual music].

    PubMed

    Zabalza-Estévez, Ramón J

    2014-03-01

    Introduccion. Las alucinaciones musicales son un tipo de alucinacion auditiva prevalente en la poblacion no psiquiatrica, pero escasamente comunicada en la bibliografia neurologica. Ocurren con mayor frecuencia en la poblacion anciana, del sexo femenino y con perdida de audicion, pero su fisiopatologia esta por desentrañar. Casos clinicos. Se presentan seis casos (cinco mujeres y un hombre) de alucinaciones musicales diagnosticados en una consulta de neurologia general en un lapso de tiempo de cinco años. En cinco de ellos concurria la hipoacusia en mayor o menor grado y uno estaba desencadenado por la pentoxifilina. En su mayoria, el contenido musical de las alucinaciones provenia de experiencias musicales vividas en la infancia y juventud. En los casos sometidos a tratamiento farmacologico la respuesta fue pobre; sin embargo, una vez explicada a los pacientes la benignidad del cuadro y su desvinculacion con patologia psicotica, el grado de aceptacion del sintoma fue bueno. Conclusiones. Las alucinaciones musicales son una patologia fronteriza entre la neurologia, la otorrinolaringologia y la psiquiatria poco conocida, que, con frecuencia, se vincula erroneamente a la enfermedad mental. Es fundamental explicar a pacientes y familiares el caracter no necesariamente psiquiatrico de este sintoma, asi como conocer la potencialidad que tienen algunos farmacos de uso comun para generarlo.

  8. Usefulness of genetic characterization of narcolepsy and hypersomnia on phenotype definition: a study in Portuguese patients.

    PubMed

    Martins-da-Silva, António; Lopes, João; Ramalheira, João; Carvalho, Cláudia; Cunha, Daniela; Costa, Paulo P; Silva, M Berta

    2014-01-16

    Introduccion. La determinacion del genotipo de los antigenos leucocitarios humanos (HLA) de clase II es un metodo muy difundido para confirmar el diagnostico de la narcolepsia, con y sin cataplejia. El genotipado del HLA es fiable, sencillo y proporciona seguridad al medico. Tambien es menos invasivo que otros metodos y entronca con la hipotesis autoinmunitaria sobre el origen de la narcolepsia. Objetivo. Evaluar la utilidad de los marcadores geneticos (HLA) en el diagnostico diferencial de diferentes trastornos del sueño y su relevancia en el contexto de nuestra poblacion. Sujetos y metodos. Se analizo una cohorte de 113 pacientes con episodios de somnolencia diurna, 38 de los cuales fueron clasificados como afectados por narcolepsia con cataplejia, 13 con narcolepsia y 62 con hipersomnia/hipersomnia idiopatica. La poblacion de control estaba integrada por 206 individuos sanos del mismo origen geografico. Resultados. La frecuencia del alelo HLA-DQB1*06:02 era superior a la habitual en los pacientes con narcolepsia y narcolepsia con cataplejia (46% y 71%, respectivamente, frente al 16% en la poblacion control), con un valor de p = 4,53–13 en el caso de la narcolepsia con cataplejia. La frecuencia del alelo HLA-DQB1*02 era mas elevada en la poblacion con hipersomnia en comparacion con la poblacion control (55% frente a 34%; p = 0,004). Conclusiones. La caracterizacion genetica tiene posibilidades de mejorar el diagnostico diferencial entre varios fenotipos de somnolencia diurna excesiva, que corresponden a diversas entidades con diferentes mecanismos biologicos.

  9. [Tics and Tourette syndrome in literature, cinema and television].

    PubMed

    Collado-Vázquez, Susana; Carrillo, Jesús M

    2013-08-01

    Introduccion. La literatura, el cine y la television han mostrado con frecuencia distintas enfermedades neurologicas, y entre ellas los tics y el sindrome de Tourette estan ampliamente representados con distintos enfoques, en ocasiones de forma muy realista, en otros casos para dar un mayor dramatismo o para ridiculizar a un personaje. Estas visiones inadecuadas contribuyen a estigmatizar a las personas que presentan estos trastornos del movimiento. Objetivo. Realizar una revision de la imagen que se ha ofrecido de los tics y del sindrome de Tourette en algunas obras literarias, el cine y la television. Desarrollo. Los tics son movimientos rapidos, estereotipados, involuntarios, recurrentes y no propositivos de la musculatura esqueletica y faringolaringea. El sindrome de Gilles de la Tourette asocia multiples tics a vocalizaciones involuntarias (ecolalia, coprolalia). Aparecen en la infancia y suelen asociarse comportamientos obsesivos compulsivos. Estos trastornos se han mostrado en la literatura en obras como La pequeña Dorrit, Angel Guerra, La torre de los siete jorobados o Huerfanos de Brooklyn. Tambien el cine se ha interesado por los tics y el sindrome de Tourette en peliculas como Inocencia y juventud, El codigo tic o Los impostores. Asimismo, en diversas series de television aparecen personajes con estos trastornos, como Shameless, Ally McBeal, Quincy, medico forense o La ley de Los Angeles. Conclusion. La literatura, el cine y la television han mostrado con frecuencia los tics y el sindrome de Tourette. En ocasiones de forma muy realista, pero en otros casos se han fomentado falsas creencias e imagenes estereotipadas.

  10. Nursing in a service line organization.

    PubMed

    Hesterly, S C; Robinson, M

    1988-11-01

    Thoreau has said that change's sake is not progress. Clarity of purpose and desired outcomes; the provision of sufficient time to educate and ensure cooperation; refocusing and reanalysis; support for staff in leadership positions; and high visibility throughout the organization on the part of top level management are mandatory in bringing about a radical change such as our organization has experienced. The Alta Bates-Herrick Hospital has a rich tradition of high quality care in Berkeley and, indeed, throughout Northern California. The founders of both campuses, Alta Bates, RN, and Leroy Herrick, MD, established a heritage of concern, compassion, and caring. Streamlining the structure of the hospital to ensure fiscal viability, efficiency, and the ability to respond quickly to challenges coupled with the ongoing internal efforts to articulate and retain high quality care will continue to serve the people of our community well.

  11. Mapping Weathering and Alteration Minerals in Virginia City, Nevada with AVIRIS and HyperSpecTIR

    NASA Technical Reports Server (NTRS)

    Vaughan, R. Greg; Calvin, Wendy M.

    2006-01-01

    Situated on the east side of the Virginia Range, Virginia City (Figure 1) is the home of the historic Comstock mining district and was mined as a source of Au and Ag between 1859 and the 1960's, with numerous underground workings and small open pit operations. The Virginia Range consists mostly of Oligocene to Miocene volcanic rocks that overlie Mesozoic metamorphic rocks (Mzvs) and Cretaceous granodiorite (Kgd). Andesite to dacite flows, breccias and intrusives of the Alta Formation (Ta) (18-15 Ma) (Hudson, 2003) are overlain by intermediate volcanic, volcaniclastic and locally intrusive rocks of the Kate Peak Formation (Tk) (14.7-12 Ma) (Vikre, 1998; Hudson, 2003). Contemporaneous with the Alta Formation was the intrusion of the Davidson diorite (1 5.2 Ma) (Castor et al., 2002), which forms the bulk of Mt. Davidson just west of the town site.

  12. Sexual information seeking on web search engines.

    PubMed

    Spink, Amanda; Koricich, Andrew; Jansen, B J; Cole, Charles

    2004-02-01

    Sexual information seeking is an important element within human information behavior. Seeking sexually related information on the Internet takes many forms and channels, including chat rooms discussions, accessing Websites or searching Web search engines for sexual materials. The study of sexual Web queries provides insight into sexually-related information-seeking behavior, of value to Web users and providers alike. We qualitatively analyzed queries from logs of 1,025,910 Alta Vista and AlltheWeb.com Web user queries from 2001. We compared the differences in sexually-related Web searching between Alta Vista and AlltheWeb.com users. Differences were found in session duration, query outcomes, and search term choices. Implications of the findings for sexual information seeking are discussed.

  13. An assessment of the visibility of MeSH-indexed medical web catalogs through search engines.

    PubMed

    Zweigenbaum, P; Darmoni, S J; Grabar, N; Douyère, M; Benichou, J

    2002-01-01

    Manually indexed Internet health catalogs such as CliniWeb or CISMeF provide resources for retrieving high-quality health information. Users of these quality-controlled subject gateways are most often referred to them by general search engines such as Google, AltaVista, etc. This raises several questions, among which the following: what is the relative visibility of medical Internet catalogs through search engines? This study addresses this issue by measuring and comparing the visibility of six major, MeSH-indexed health catalogs through four different search engines (AltaVista, Google, Lycos, Northern Light) in two languages (English and French). Over half a million queries were sent to the search engines; for most of these search engines, according to our measures at the time the queries were sent, the most visible catalog for English MeSH terms was CliniWeb and the most visible one for French MeSH terms was CISMeF.

  14. Atla Regio, Venus: Geology and origin of a major equatorial volcanic rise

    NASA Technical Reports Server (NTRS)

    Senske, D. A.; Head, James W., III

    1992-01-01

    Regional volcanic rises form a major part of the highlands in the equatorial region of Venus. These broad domical uplands, 1000 to 3000 km across, contain centers of volcanism forming large edifices and are associated with extension and rifting. Two classes of rises are observed: (1) those that are dominated by tectonism, acting as major centers for converging rifts such as Beta Regio and Alta Regio, and are termed tectonic junctions; and (2) those forming uplands characterized primarily by large-scale volcanism forming edifices. Western Eistla Regio and Bell Regio, where zones of extension and rifting are less developed. Within this second class of features the edifices are typically found at the end of a single rift, or are associated with a linear belt of deformation. We examine the geologic characteristics of the tectonic junction at Alta Regio, concentrating on documenting the styles of volcanism and assessing mechanisms for the formation of regional topography.

  15. Searching online and Web-based resources for information on natural products used as drugs.

    PubMed Central

    Stone, V L; Fishman, D L; Frese, D B

    1998-01-01

    Finding and evaluating information on natural products used as drugs can present challenges to the information professional. In this study, eight databases including resources retrieved on the Web were compared for relevancy and uniqueness. Ten reference questions related to natural products used as drugs were searched in the latest three year file of a number of databases, including MEDLINE, International Pharmaceutical Abstracts, and EMBASE/Excerpta Medica. In addition, the Web was searched for relevant Internet sites using the Alta Vista search engine. EMBASE/Excerpta Medica retrieved the largest number of relevant citations for four of the ten questions. MEDLINE, the Health Reference Center, and Alta Vista each retrieved the largest numbers in two questions. Overall, the standard medical databases were the first choice for the health professional and for many lay people because of their more extensive indexing and coverage of authoritative journals. PMID:9803295

  16. Mapping Weathering and Alteration Minerals in Virginia City, Nevada with AVIRIS and HyperSpecTIR

    NASA Technical Reports Server (NTRS)

    Vaughan, R. Greg; Calvin, Wendy M.

    2006-01-01

    Situated on the east side of the Virginia Range, Virginia City (Figure 1) is the home of the historic Comstock mining district and was mined as a source of Au and Ag between 1859 and the 1960's, with numerous underground workings and small open pit operations. The Virginia Range consists mostly of Oligocene to Miocene volcanic rocks that overlie Mesozoic metamorphic rocks (Mzvs) and Cretaceous granodiorite (Kgd). Andesite to dacite flows, breccias and intrusives of the Alta Formation (Ta) (18-15 Ma) (Hudson, 2003) are overlain by intermediate volcanic, volcaniclastic and locally intrusive rocks of the Kate Peak Formation (Tk) (14.7-12 Ma) (Vikre, 1998; Hudson, 2003). Contemporaneous with the Alta Formation was the intrusion of the Davidson diorite (1 5.2 Ma) (Castor et al., 2002), which forms the bulk of Mt. Davidson just west of the town site.

  17. Tests of commercial colour CMOS cameras for astronomical applications

    NASA Astrophysics Data System (ADS)

    Pokhvala, S. M.; Reshetnyk, V. M.; Zhilyaev, B. E.

    2013-12-01

    We present some results of testing commercial colour CMOS cameras for astronomical applications. Colour CMOS sensors allow to perform photometry in three filters simultaneously that gives a great advantage compared with monochrome CCD detectors. The Bayer BGR colour system realized in colour CMOS sensors is close to the astronomical Johnson BVR system. The basic camera characteristics: read noise (e^{-}/pix), thermal noise (e^{-}/pix/sec) and electronic gain (e^{-}/ADU) for the commercial digital camera Canon 5D MarkIII are presented. We give the same characteristics for the scientific high performance cooled CCD camera system ALTA E47. Comparing results for tests of Canon 5D MarkIII and CCD ALTA E47 show that present-day commercial colour CMOS cameras can seriously compete with the scientific CCD cameras in deep astronomical imaging.

  18. Presence of polycyclic aromatic hydrocarbons (PAHs) in apple in rural terrains from Mexico City.

    PubMed

    Salinas, Rutilio Ortiz; González, Gilberto Díaz; Bermudez, Beatriz Schettino; Tolentino, Rey Gutiérrez; Vega Y León, Salvador

    2010-08-01

    This paper describes PAH concentrations in apple crops that are growing in rural terrains in Mexico City. The concentrations of individual PAHs showed great variability, there being low and high molecular weight compounds in dry (high molecular weight for Tlahuac 7.06 microg/g and Milpa Alta 3.96 microg/g) and wet months (high molecular weight for Tlahuac 11.25 microg/g and Milpa Alta 12.05 microg/g). Some PAHs indicators and cross plot ratios Ant/(Ant + Phe) and Flu/(Flu + Pyr) define fossil fuels and vegetation combustion as the source of contamination over the cuticle of the apples. It is likely that deposition (dry and wet) is the principal source o f contamination over the apple surface. This study reveals the presence of PAHs in apples due to the high air contamination of Mexico City.

  19. Patellofemoral Joint Reconstruction for Patellar Instability: Medial Patellofemoral Ligament Reconstruction, Trochleoplasty, and Tibial Tubercle Osteotomy.

    PubMed

    Dean, Chase S; Chahla, Jorge; Serra Cruz, Raphael; Cram, Tyler R; LaPrade, Robert F

    2016-02-01

    Recurrent patellar instability can be very debilitating and may require surgical intervention. A thorough workup must be completed in this subset of patients. Risk factors for recurrent instability include patella alta, trochlear dysplasia, an increased tibial tubercle-trochlear groove distance, and insufficiencies in the medial retinacular structures. Necessary treatment of these risk factors, once identified, should be addressed surgically. Patellofemoral reconstruction must be individually tailored to each patient's anatomy and may necessitate medial patellofemoral ligament reconstruction, tibial tubercle osteotomy, or trochleoplasty in any combination or as a standalone procedure. This article details our technique for surgical treatment of recurrent patellar instability with a medial patellofemoral ligament reconstruction, an open trochleoplasty, and a tibial tubercle osteotomy for patients with severe trochlear dysplasia, an increased tibial tubercle-trochlear groove distance, or patella alta.

  20. Bilateral Patellar Tendon Rupture

    DTIC Science & Technology

    2009-07-01

    Basamania CJ: Incidence of major tendon ruptures and anterior cruciate ligament tears in US Army soldiers, Am J Sports Med2007; 35(8):1308-1314. 2... ligament or meniscus in is measurement is relatively independent of knee flex o of less than 0.80 indicates patella alta (Fig. Fig. 4: MRI of left...risk of tendon rupture after fluoroquinolone therapy , and requested that pharmaceutical manufacturers include boxed warnings. In healthy adults

  1. Lumen and Chromaticity Maintenance of LED PAR38 Lamps Operated in Steady-State Conditions

    SciTech Connect

    Royer, Michael P.

    2014-12-01

    The lumen depreciation and color shift of 38 different lamps (32 LED, 2 CFL, 1 ceramic metal halide [CMH], 3 halogen) were monitored in a specially developed automated long-term test apparatus (ALTA2) for nearly 14,000 hours. Five samples of each lamp model were tested, with measurements recorded on a weekly basis. The lamps were operated continuously at a target ambient temperature between 44°C and 45°C.

  2. Worldwide Report, Telecommunications Policy, Research and Development, No. 258

    DTIC Science & Technology

    1983-01-28

    Telecommunications Firm 45 WEST EUROPE ITALY New Technique for Precision DME of Microwave Landing System (Franco Chiarini , et al.; ALTA FREQUENZA, Sep...Article by Franco Chiarini , Mauro Gori, Francesco Vatalaro, of Laboratorio Central Industrie Face Standard-Pomezia, and Giorgio Corazza, Gabriele...Spring 1980. [8] F. Chiarini , M. Gori: Possibilitä di miglioramento della precisione di un DME in banda L öfferta da u’n sistema di antenne a

  3. Inspecting an ethylene pipe line

    SciTech Connect

    Ramsvig, D.M. ); Duncan, J.; Zillinger, L. )

    1991-07-01

    This paper reports on the Alberta Gas Ethylene Co. (AGEC), completion of intensive internal cleaning and inspection program on their 112-mi ethylene pipe line. AGEC operates two ethylene manufacturing facilities in central Alberta, Canada. The ethylene plants are located 12.4 mi east of Red Deer, Alta., at Joffre, and supply two customers in Joffre. The remaining ethylene is shipped by the 112-mi, 12-in. line to a storage cavern near Edmonton.

  4. [Late primary abdominal pregnancy. Case report].

    PubMed

    Farías, Emigdio Torres; Gómez, Luis Guillermo Torres; Allegre, René Márquez; Higareda, Salvador Hernández

    2008-09-01

    Abdominal advanced pregnancy is an obstetric complication that put at risk maternal and fetal life. We report a case of advanced abdominal pregnancy with intact ovaries and fallopian tubes, without ureteroperitoneal fistulae and, late prenatal diagnosis, in a multiparous patient without risk factors, with alive newborn, and whose pregnancy was attended at Unidad Medica de Alta Especialidad, Hospital de Gineco-Obstetricia, Centro Medico Nacional de Occidente del IMSS, Guadalajara, Jalisco, México.

  5. Consular Identification Cards: Domestic and Foreign Policy Implications, the Mexican Case, and Related Legislation

    DTIC Science & Technology

    2005-05-26

    National Government Domestic Social Policy Division K. Larry Storrs Specialist in Latin American Affairs Foreign Affairs, Defense, and Trade Division...security consular registration” (matrícula consular de alta seguridad , MCAS, in Spanish), first became available in the United States in March 2002.1...obtain a driver’s license. It is also accepted by numerous telephone and utility companies, hospitals , and video stores, among other establishments. Some

  6. Battle Damage Modeling

    DTIC Science & Technology

    2010-05-01

    provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently...ABSTRACT SAR 18. NUMBER OF PAGES 16 19a. NAME OF RESPONSIBLE PERSON a. REPORT unclassified b. ABSTRACT unclassified c. THIS PAGE...J.A., Introduction to hydrocodes. 2004, Amsterdam: Elsevier. [5] Dolce, F., Analisi del danno da impatto ad alta velocità su strutture composite in

  7. Complement Receptor 1 Is a Sialic Acid-Independent Erythrocyte Receptor of Plasmodium falciparum

    DTIC Science & Technology

    2010-06-17

    Investigaciones Científicas y Servicios de Alta Tecnología -AIP (INDICASAT- AIP), Ciudad del Saber, Clayton, Panamá, 4 Division of Malaria Vaccine Development, the...a training grant from the Secretaría Nacional de Ciencia y Tecnología (SENACYT), República de Panamá. The funders had no role in study design, data

  8. Effects of static stretching of knee musculature on patellar alignment and knee functional disability in male patients diagnosed with knee extension syndrome: A single-group, pretest-posttest trial.

    PubMed

    Pourahmadi, Mohammad Reza; Ebrahimi Takamjani, Ismail; Hesampour, Kazem; Shah-Hosseini, Gholam Reza; Jamshidi, Ali Ashraf; Shamsi, Mohammad Bagher

    2016-04-01

    Knee extension (Kext) syndrome is based on movement system impairments and is described as knee pain associated with quadriceps stiffness. To investigate the effects of 3 times per week for 4 weeks static stretching of knee musculature on patellar alignment and knee functional disability in male Kext syndrome patients. A single-group, pretest-posttest clinical trial. Hazrat-e-Rasoul Akram Hospital. Forty-six male Kext syndrome patients aged 18-35 years. Knee functional disability was assessed by the Kujala questionnaire. Patellar tilt was assessed using the skyline view X-ray. In addition, patella alta was assessed by X-ray using the Insall-Salvati ratio. After intervention, changes in knee flexion-extension range of motion (ROM) and hip adduction were assessed by goniometer and inclinometer. Changes in patellar tilt and patella alta were evaluated. Correlations between muscles length, patellar tilt and knee functional disability were also evaluated. The mean of patellar tilt in male Kext syndrome patients was 15.19°. Only the correlation between rectus femoris shortness and patellar tilt (P = 0.002) and the correlation between rectus femoris shortness and knee functional disability (P = 0.037) were significant. Patella alta was not severe in male Kext syndrome patients (1.28 ± 0.10). Knee flexion-extension ROM and femoral adduction increased significantly after a 12-session stretching programme (P < 0.0001). The results demonstrated that rectus femoris shortness had higher correlation with patellar tilt and knee functional disability than iliotibial band and hamstring shortness. Stretching was effective in reducing patellar tilt, patella alta, knee functional disability, increasing knee ROM and hip adduction in these patients. Copyright © 2015 Elsevier Ltd. All rights reserved.

  9. The prevalence and combined prevalences of anatomic factors associated with recurrent patellar dislocation: a magnetic resonance imaging study.

    PubMed

    Steensen, Robert N; Bentley, Jared C; Trinh, Thai Q; Backes, Jeffrey R; Wiltfong, Roger E

    2015-04-01

    Anatomic factors, including patella alta, increased tibial tubercle-trochlear groove (TT-TG) distance, rotational deformities, and trochlear dysplasia, are associated with dislocation of the patella. Identifying the presence of these anatomic factors both in isolation and in combination may influence treatment in patients with patellar dislocation. The aim of this study was to compare the prevalence and combined prevalences of these anatomic factors using magnetic resonance imaging in a group of patients with and without histories of recurrent dislocation of the patella. Case-control study; Level of evidence, 3. The prevalence and combined prevalences of patella alta, increased TT-TG distance, rotational deformity, and trochlear dysplasia on magnetic resonance imaging were reported and compared in 60 patients (60 knees) with and 120 patients (120 knees) without histories of recurrent patellar dislocation. Patients with recurrent patellar dislocation possessed higher rates of patella alta (60.0% vs. 20.8%), increased TT-TG distance (42.0% vs. 3.2%), rotational deformity (26.7% vs. 2.5%), and trochlear dysplasia (68.3% vs. 5.8%) compared with patients without histories of patellar dislocation. Multiple anatomic factors were identified in 58.3% of patients (35/60) with recurrent dislocation compared with only 1.7% of controls (2/120). Recurrent patellar dislocation is associated with an increased prevalence of patella alta, increased TT-TG distance, rotational deformity, and trochlear dysplasia compared with patients with no histories of patellar dislocation. Multiple anatomic factors were identified in the majority of patients with recurrent dislocation. Further research may identify which factors play a greater role in patellar stability and may allow physicians to predict which first-time dislocation patients are more likely to sustain recurrence. © 2015 The Author(s).

  10. Tibial tubercle osteotomy in patello-femoral instability and in patellar height abnormality.

    PubMed

    Caton, Jacques H; Dejour, David

    2010-02-01

    The aim of this study was to present the different surgical procedures of tibial tubercle osteotomies for patellar instability or patellar mispositioning such as patella alta or patella infera. This study analysed the Caton-Deschamps index used for assessment of vertical patella height in order to make a precise plan for tibial tuberosity osteotomies. This study included 61 knees (50 patients) treated for patellar instability with patella alta and 24 patients treated for patella infera of mechanical origin. The results of medial transfer of the tibial tuberosity, with or without distal transfer in cases of patellar instability with patella alta, gives excellent results for stability in 76.8% of the cases. The results of the proximal transfer of the tibial tuberosity in cases of patella infera were excellent or good in 80% of the cases in our series of 24 patients. A precise preoperative plan is needed with determination of the vertical patellar height using the Caton-Deschamps index and the situation of the tibial tuberosity and the Tibial Tubercle to Trochlear Groove distance (TT-TG) of the knee on CT scan in order to obtain satisfactory results.

  11. [Executive functions and high intellectual capacity].

    PubMed

    Sastre-Riba, S; Viana-Saenz, L

    2016-01-01

    Introduccion. La alta capacidad intelectual es un proceso en desarrollo en el que las funciones ejecutivas (inhibicion, memoria de trabajo y flexibilidad) desempeñan un papel en la manifestacion optima de su potencial. Objetivo. Explorar la eficacia del funcionamiento ejecutivo entre los perfiles de alta capacidad de superdotacion y talento (convergente o divergente). Sujetos y metodos. Se estudiaron 78 niños con alta capacidad intelectual de 8-15 años con perfiles de superdotacion (n = 21), talento convergente (n = 39) o talento divergente (n = 18). Se administro la bateria de aptitudes diferenciales y generales o el Differential Aptitude Test (segun la edad) y el test de pensamiento creativo de Torrance, ademas del test de clasificacion de tarjetas de Wisconsin, el test de Corsi y el test go-no go mediante la plataforma Psychology Experiment Building Language. Se realizo un analisis multivariado de la varianza para conocer la relacion entre funcion ejecutiva y perfil intelectual. Resultados. Se obtienen diferencias significativas entre los perfiles estudiados y las funciones ejecutivas de flexibilidad e inhibicion, pero no en la memoria de trabajo. Conclusion. La memoria de trabajo es similar entre los perfiles estudiados, pero el perfil complejo de superdotacion muestra mejor funcionamiento ejecutivo, con mayor flexibilidad e inhibicion que el talento, especialmente el convergente.

  12. Tibial tubercle osteotomy in patello-femoral instability and in patellar height abnormality

    PubMed Central

    Dejour, David

    2010-01-01

    The aim of this study was to present the different surgical procedures of tibial tubercle osteotomies for patellar instability or patellar mispositioning such as patella alta or patella infera. This study analysed the Caton–Deschamps index used for assessment of vertical patella height in order to make a precise plan for tibial tuberosity osteotomies. This study included 61 knees (50 patients) treated for patellar instability with patella alta and 24 patients treated for patella infera of mechanical origin. The results of medial transfer of the tibial tuberosity, with or without distal transfer in cases of patellar instability with patella alta, gives excellent results for stability in 76.8% of the cases. The results of the proximal transfer of the tibial tuberosity in cases of patella infera were excellent or good in 80% of the cases in our series of 24 patients. A precise preoperative plan is needed with determination of the vertical patellar height using the Caton–Deschamps index and the situation of the tibial tuberosity and the Tibial Tubercle to Trochlear Groove distance (TT-TG) of the knee on CT scan in order to obtain satisfactory results. PMID:20066411

  13. Impact of a high-fat diet containing canola or soybean oil on body development and bone; parameters in adult male rats.

    PubMed

    Soares da Costa, Carlos Alberto; De Sousa dos Santos, Aline; Santana Carlos, Aluana; Lopes Gonzalez, Gabrielle de Paula; Pontes Gaspar Reis, Rejane; Carneiro, Cynthia; Soares Alves, Sanderson; Pereira Albuquerque, Karine; Alves da Silva, Paula Cristina; Cavalcante Ribeiro, Danielle; Teles Boaventura, Gilson; de Moura, Egberto Gaspar; Alves do Nascimento-Saba, Celly Cristina

    2015-05-01

    Introducción: El papel del ácido graso en la prevención o la progresión de las enfermedades crónicas ha generado un interés significativo por parte de los investigadores. Por lo tanto, nuestro objetivo fue evaluar los efectos a largo plazo de la dieta alta en grasas que contienen soja o aceite de canola en los parámetros de desarrollo del cuerpo y los huesos de ratas macho. Métodos: Después del destete, las ratas se agruparon y se alimentaron con una dieta control (7S) o una dieta alta en grasa que contiene soja (19S) o aceite de canola (19C). Fémur y vértebras lumbares (LV4) estructura se determinaron a los 180 días por absorciometría dual de rayos X y tomografía computarizada. Resultados: Los grupos mostraron similares ingesta de alimentos, la masa corporal y el desarrollo de longitud. Los parámetros óseos de la 19C fueron similares al grupo control, mientras que los 19S mostró parámetros óseos inferiores en comparación con los otros grupos. Conclusiones: La dieta alta en grasas que contiene aceite de soja fue desfavorable a la estructura ósea, mientras que el aceite de canola contribuyó salud de los huesos en la etapa adulta de la vida.

  14. Comparison of rotordynamic fluid forces in axial inducers and centrifugal turbopump impellers

    NASA Astrophysics Data System (ADS)

    d'Agostino, Luca

    2016-05-01

    The paper illustrates and compares the results of the experimental campaigns carried out in the Cavitating Pump Rotordynamic Test Facility (CPRTF) at Alta, Italy, under ESA funding for the characterization of the lateral rotordynamic fluid forces acting on high-head axial inducers and centrifugal turbopump impellers for space propulsion applications. The configurations presented here refer to a three-bladed tapered-hub, variable-pitch, inducer (DAPROT3) and a single-stage centrifugal pump (VAMPIRE) with vaneless diffuser and single spiral volute. Both the centrifugal pump and the inducer have been designed by means of reduced order models specifically developed by the author and his collaborators for the geometric definition and performance prediction of this kind of hydraulic turbomachinery. Continuous spectra of the rotordynamic forces acting on the impellers as functions of the whirl frequency have been obtained by means of the novel technique recently developed and demonstrated at Alta. The influence of the rotor whirl motion, flow rate, cavitating conditions, and liquid temperature (thermal cavitation effects) on the rotordynamic fluid forces is illustrated and the observed differences in their behavior in axial inducers and centrifugal turbpumps are discussed and interpreted in the light of the outcome of recent cavitation visualization experiments carried out by the Chemical Propulsion Team at Alta.

  15. First calculation of phase and coherence of longitudinally separated L-band equatorial ionospheric scintillation

    NASA Astrophysics Data System (ADS)

    Shume, E. B.; Mannucci, A. J.

    2013-07-01

    We present the first calculation of phase and coherence of cross-wavelet transform applied to longitudinally separated L-band equatorial ionospheric scintillation observations received from Geostationary Earth Orbit (GEO) satellites. The phase and coherence analysis were employed on two pairs of observations: (1) São Luís and Rio Branco and (2) Alta Floresta and Huancayo. For these case studies, in statistically significant and high-coherence regions, scintillation observations over São Luís (Alta Floresta) lead that of Rio Branco (Huancayo) by ˜2 to 3 h with a 95%frequency. If L-band scintillation happens over São Luís (Alta Floresta), there is a 95%likelihood that scintillation would happen to the west over Rio Branco (Huancayo) after ˜2 to 3 h, suggesting that a forecast can be made ahead of scintillation occurrences. The phase and coherence relationships between the longitudinally separated scintillation-producing regions can be connected to the large-scale wave structures which are reported to be related to the generation of equatorial spread F and scintillation.

  16. Measurements of gas hydrate formation probability distributions on a quasi-free water droplet

    NASA Astrophysics Data System (ADS)

    Maeda, Nobuo

    2014-06-01

    A High Pressure Automated Lag Time Apparatus (HP-ALTA) can measure gas hydrate formation probability distributions from water in a glass sample cell. In an HP-ALTA gas hydrate formation originates near the edges of the sample cell and gas hydrate films subsequently grow across the water-guest gas interface. It would ideally be desirable to be able to measure gas hydrate formation probability distributions of a single water droplet or mist that is freely levitating in a guest gas, but this is technically challenging. The next best option is to let a water droplet sit on top of a denser, immiscible, inert, and wall-wetting hydrophobic liquid to avoid contact of a water droplet with the solid walls. Here we report the development of a second generation HP-ALTA which can measure gas hydrate formation probability distributions of a water droplet which sits on a perfluorocarbon oil in a container that is coated with 1H,1H,2H,2H-Perfluorodecyltriethoxysilane. It was found that the gas hydrate formation probability distributions of such a quasi-free water droplet were significantly lower than those of water in a glass sample cell.

  17. Change of patellar height with age and sex.

    PubMed

    Kar, Maitreyee Nandi; Bhakta, Abhijit; Mondal, Gopal Chandra; Bandyopadhyay, Maitreyi; Kar, Chinmaya; Nandi, Sujit Narayan

    2012-12-01

    Patellar height is one of the important parameter in patellar stability. Growth spurt or excessive physical strain can lead to high-riding patella or patella alta. But this is not yet proved. This study was mainly targeted at eliciting the influence of age on Insall-Salvati index, one of the important index to measure patellar height. As the present study is meant for measuring the patellar height separately in male and female, it is also to find out the effect of gender on patellar height if any. The study was been conducted in North Bengal Medical College and Hospital among 93 subjects covering both adult and adolescent age groups. Patellar height of respective subjects was measured radiologically using Insall-Salvati Index; results were extrapolated for statistical analysis. It revealed that value of Insall-Salvati index was higher in adult compared to adolescent group but the difference was not statistically significant. Statistical tests shows no significant difference in Insall-Salvati index according to sex. While screening the athletes patella alta must be kept in mind as this can be associated with patellofemoral pain syndrome, chondromalacia patellae, knees with apophysitis of tibial tubercle (Osgood-Schiatter disease). Not only that, significant cause of recurrent patellar dislocation can be associated with patella alta

  18. Visualization of diffusion of the drug solution during aluminum potassium tannic acid injection therapy: a pilot study.

    PubMed

    Yamamoto, Yutaka; Miwa, Mitsuharu

    2013-06-01

    Sclerotherapy with aluminum potassium tannic acid (ALTA), which was approved in Japan for the treatment of internal hemorrhoids in July 2004 (Takano et al., Int J Colorectal Dis 21:44-51, 2006), has been widely accepted because of its effectiveness and low invasiveness. More than 200,000 patients have received ALTA injection therapy. ALTA is injected directly into 4 points of an internal hemorrhoid (4-step injection) to induce sclerosis and remission of the hemorrhoids, and consequently, resolution of symptoms such as prolapse and bleeding. The precision of the 4-step injection is considered to be a crucial determinant of the success of this therapy and the risk of complications. However, sufficient evidence has not yet been obtained concerning the diffusion and distribution of the injected drug. A pilot study visualized the real-time diffusion/distribution of the drug solution following the 4-step injection, using the ICG (indocyanine green) fluorescence technique, and an infrared camera (Photodynamic EYE; PDE, Hamamatsu Photonics K.K.).

  19. Geomagnetic activity influences the melatonin secretion at latitude 70 degrees N.

    PubMed

    Weydahl, A; Sothern, R B; Cornélissen, G; Wetterberg, L

    2001-01-01

    Factors other than light may affect variations in melatonin, including disturbances in the geomagnetic field. Such a possibility was tested in Alta, Norway, located at latitude 70 degrees N, where the aurora borealis is a result of large changes in the horizontal component (H) of the geomagnetic field. Geomagnetic disturbances are felt more strongly closer to the pole than at lower latitudes. Also noteworthy in Alta is the fact that the sun does not rise above the horizon for several weeks during the winter. To examine whether changes in geomagnetic activity influence the secretion of melatonin, saliva was collected from 25 healthy subjects in Alta several times during the day-night and at different times of the year. Single cosinor analyses yielded individual estimates of.the circadian amplitude and MESOR of melatonin. A 3-hour mean value for the local geomagnetic activity index, K, was used for approximately the same 24-hour span. A circadian rhythm was found to characterize both melatonin and K, the peak in K (23:24) preceding that of melatonin (06:08). During the span of investigation, a circannual variation also characterized both variables. Correlation analyses suggest that changes in geomagnetic activity had to be of a certain magnitude to affect the circadian amplitude of melatonin. If large enough (> 80 nT/3 h), changes in geomagnetic activity also significantly decreased salivary melatonin concentration.

  20. The Castanea sativa bur as a new potential ingredient for nutraceutical and cosmetic outcomes: preliminary studies.

    PubMed

    Pinto, Diana; Rodrigues, Francisca; Braga, Nair; Santos, Joana; Pimentel, Filipa B; Palmeira-de-Oliveira, Ana; Oliveira, M Beatriz P P

    2017-01-25

    Chestnuts are a common food product in Mediterranean countries, being recognized also for their beneficial effects on human health. Nevertheless, during processing, these fruits generate a large amount of food by-products, such as shells and burs. In the present work, the macronutrient composition, vitamin E profile and amino acid content of the burs were determined in samples from three different Portuguese regions (Minho, Trás-os-Montes and Beira-Alta). The nutritional composition was similar for all samples, being characterised by a high moisture content and low fat amounts. All essential amino acids were present in considerable amounts. Concerning vitamin E, the predominant vitamer was α-tocopherol for the Minho and Beira-Alta samples. The total phenolic compounds were quantified, and the antioxidant activity evaluated in different extracts using two biochemical assays (DPPH˙ and FRAP). All bur extracts showed a high total phenolic content, the highest obtained being that for the Beira-Alta samples. The chestnut bur from Minho showed the highest antioxidant activity in both assays. This study aims to demonstrate the potential of the Castanea sativa bur as a cosmetic and nutraceutical ingredient.

  1. Lipoteichoic acid from Lactobacillus plantarum inhibits the expression of platelet-activating factor receptor induced by Staphylococcus aureus lipoteichoic acid or Escherichia coli lipopolysaccharide in human monocyte-like cells.

    PubMed

    Kim, Hangeun; Jung, Bong Jun; Jeong, Jihye; Chun, Honam; Chung, Dae Kyun

    2014-08-01

    Platelet-activating factor receptor (PAFR) plays an important role in bacterial infection and inflammation. We examined the effect of the bacterial cell wall components lipopolysaccharide (LPS) and lipoteichoic acid (LTA) from Lactobacillus plantarum (pLTA) and Staphylococcus aureus (aLTA) on PAFR expression in THP-1, a monocyte-like cell line. LPS and aLTA, but not pLTA, significantly increased PAFR expression, whereas priming with pLTA inhibited LPSmediated or aLTA-mediated PAFR expression. Expression of Toll-like receptor (TLR) 2 and 4, and CD14 increased with LPS and aLTA treatments, but was inhibited by pLTA pretreatment. Neutralizing antibodies against TLR2, TLR4, and CD14 showed that these receptors were important in LPS-mediated or aLTA-mediated PAFR expression. PAFR expression is mainly regulated by the nuclear factor kappa B signaling pathway. Blocking PAF binding to PAFR using a PAFR inhibitor indicated that LPS-mediated or aLTA-mediated PAF expression affected TNF-α production. In the mouse small intestine, pLTA inhibited PAFR, TLR2, and TLR4 expression that was induced by heat-labile toxin. Our data suggested that pLTA has an anti-inflammatory effect by inhibiting the expression of PAFR that was induced by pathogenic ligands.

  2. Error-budget paradigms and laser mask pattern generator evolution

    NASA Astrophysics Data System (ADS)

    Hamaker, H. Christopher; Jolley, Matthew J.; Berwick, Andrew D.

    2009-01-01

    The evolution of the ALTA(R) series of laser mask pattern generators has increased the relative contribution of intensity errors on critical-dimension (CD) control to those from placement errors. This paradigm shift has driven a change in rasterization strategy wherein aerial image sharpness is improved at the cost of a slight decrease in the averaging of column-to-column placement errors. Print performance evaluation using small-area CD test patterns show improvements in stripe-axis local CD uniformity (CDU) 3σ values of 15-25% using the new strategy, and systematic brush-error contributions were reduced by 50%. The increased importance of intensity errors, coupled with the improvement of ALTA system performance, has also made the mask-blank and process-induced errors a more significant part of the overall error budget. A simple model based on two components, a pattern-invariant footprint and one related to the exposure density ρ(x, y), is shown to describe adequately the errors induced by these sources. The first component is modeled by a fourth-order, two-dimensional polynomial, whereas the second is modeled as a convolution of ρ(x, y) with one or more Gaussian kernels. Implementation of this model on the ALTA 4700 system shows improvements in global CDU of 50%.

  3. KSC-2011-7118

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers affix a cage over an Approach and Landing Test Assembly (ALTA) pod. The ALTA pod will be lifted for attachment to space shuttle Endeavour on the site once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  4. KSC-2011-7112

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers, using overhead cranes, begin to raise a cage which will be placed over an Approach and Landing Test Assembly (ALTA) pod. The ALTA pod will be lifted for attachment to space shuttle Endeavour on the site once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  5. KSC-2011-7113

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers, using overhead cranes, raise a cage which will be placed over an Approach and Landing Test Assembly (ALTA) pod. The ALTA pod will be lifted for attachment to space shuttle Endeavour on the site once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  6. KSC-2011-7111

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers, using overhead cranes, prepare to raise a cage over an Approach and Landing Test Assembly (ALTA) pod (to the left of the photo). The ALTA pod will be lifted for attachment to space shuttle Endeavour on the site once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  7. KSC-2011-7114

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers, using overhead cranes, raise a cage which will be placed over an Approach and Landing Test Assembly (ALTA) pod (in the foreground). The ALTA pod will be lifted for attachment to space shuttle Endeavour on the site once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  8. KSC-2011-7105

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – At the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, a worker connects an aerial lift to the Approach and Landing Test Assembly (ALTA) pod. The lift will be used to raise the ALTA pod onto space shuttle Endeavour. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  9. KSC-2011-7117

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers, using overhead cranes, lower a cage over an Approach and Landing Test Assembly (ALTA) pod. The ALTA pod will be lifted for attachment to space shuttle Endeavour on the site once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  10. KSC-2011-7110

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, the front end of space shuttle Endeavour is raised off the floor of the VAB by lifts, as workers prepare to attach an Approach and Landing Test Assembly (ALTA) pod to the back of the shuttle. The ALTA pod will be fitted over the area once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also will test procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  11. KSC-2011-7115

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers, using overhead cranes, raise a cage over an Approach and Landing Test Assembly (ALTA) pod. The ALTA pod will be lifted for attachment to space shuttle Endeavour on the site once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  12. KSC-2011-7116

    NASA Image and Video Library

    2011-09-21

    CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers, using overhead cranes, raise a cage over an Approach and Landing Test Assembly (ALTA) pod. The ALTA pod will be lifted for attachment to space shuttle Endeavour on the site once housing the orbital maneuvering system (OMS) pod. The demonstration test is being conducted to ensure the center’s equipment will fit into the hangar at the National Air and Space Museum when installing an ALTA pod on shuttle Enterprise. The pod must be reinstalled on a shuttle for transport on a 747 carrier aircraft. The simulation also tests procedures and timelines necessary to carry out the process. The work is part of the Space Shuttle Program’s transition and retirement processing. Enterprise, which was not equipped for space flight, was built as a test vehicle to demonstrate that the orbiter could fly in the atmosphere and land like an airplane. In 1985, Enterprise was ferried from the Kennedy Space Center to Dulles Airport, Washington, D.C., and became the property of the Smithsonian Institute. Enterprise will be moved from the Smithsonian Institution National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va., to the Intrepid Sea, Air and Space Museum in New York. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Ken Shiflett

  13. Measurements of gas hydrate formation probability distributions on a quasi-free water droplet.

    PubMed

    Maeda, Nobuo

    2014-06-01

    A High Pressure Automated Lag Time Apparatus (HP-ALTA) can measure gas hydrate formation probability distributions from water in a glass sample cell. In an HP-ALTA gas hydrate formation originates near the edges of the sample cell and gas hydrate films subsequently grow across the water-guest gas interface. It would ideally be desirable to be able to measure gas hydrate formation probability distributions of a single water droplet or mist that is freely levitating in a guest gas, but this is technically challenging. The next best option is to let a water droplet sit on top of a denser, immiscible, inert, and wall-wetting hydrophobic liquid to avoid contact of a water droplet with the solid walls. Here we report the development of a second generation HP-ALTA which can measure gas hydrate formation probability distributions of a water droplet which sits on a perfluorocarbon oil in a container that is coated with 1H,1H,2H,2H-Perfluorodecyltriethoxysilane. It was found that the gas hydrate formation probability distributions of such a quasi-free water droplet were significantly lower than those of water in a glass sample cell.

  14. Position of the Patella among Emirati Adult Knees. Is Insall-Salvati Ratio Applicable to Middle-Easterners?

    PubMed

    Althani, Saeed; Shahi, Alisina; Tan, Timothy L; Al-Belooshi, Ali

    2016-04-01

    Abnormal patellar height is associated with anterior knee pain and several conditions that affect the patellofemoral joint. The aim of this study was to 1) report the incidence of patella alta and patella baja and 2) investigate whether the normal limits of the Insall-Salvati ratio is applicable in adult Middle-Easterners. A radiographic review of the lateral radiographs of 736 Middle-Eastern knees were performed. Patellar tendon length (TL) and the patellar length (TP) was digitally measured and the ratios of these measures was used to calculate the Insall-Salvati ratio. The overall mean TL/PL ratio was 1.20±0.17. The Insall-Salvati ratio was higher (p=0.0013) in males (1.22± 0.12) than in females (1.18±0.17). According to our measurement, the recommended levels for defining abnormal patellar position should be 0.86 for patella baja and 1.54 for patella alta. The use of TL/PL ratio demonstrated a higher incidence of patella alta and a higher mean TL/PL ratio compared to other techniques. The normal ranges for the TL/PL differs from western populations and may be attributed to lifestyle differences.

  15. Position of the Patella among Emirati Adult Knees. Is Insall-Salvati Ratio Applicable to Middle-Easterners?

    PubMed Central

    Althani, Saeed; Shahi, Alisina; Tan, Timothy L.; Al-Belooshi, Ali

    2016-01-01

    Background: Abnormal patellar height is associated with anterior knee pain and several conditions that affect the patellofemoral joint. The aim of this study was to 1) report the incidence of patella alta and patella baja and 2) investigate whether the normal limits of the Insall-Salvati ratio is applicable in adult Middle-Easterners. Methods: A radiographic review of the lateral radiographs of 736 Middle-Eastern knees were performed. Patellar tendon length (TL) and the patellar length (TP) was digitally measured and the ratios of these measures was used to calculate the Insall-Salvati ratio. Results: The overall mean TL/PL ratio was 1.20±0.17. The Insall-Salvati ratio was higher (p=0.0013) in males (1.22± 0.12) than in females (1.18±0.17). According to our measurement, the recommended levels for defining abnormal patellar position should be 0.86 for patella baja and 1.54 for patella alta. Conclusion: The use of TL/PL ratio demonstrated a higher incidence of patella alta and a higher mean TL/PL ratio compared to other techniques. The normal ranges for the TL/PL differs from western populations and may be attributed to lifestyle differences. PMID:27200391

  16. Effects of large pressure amplitude low frequency noise in the parotid gland perivasculo-ductal connective tissue.

    PubMed

    Oliveira, Pedro; Brito, José; Mendes, João; da Fonseca, Jorge; Águas, Artur; Martins dos Santos, José

    2013-01-01

    Introdução: Em tecidos e órgãos expostos a ruído de baixa frequência de alta amplitude ocorre fibrose na ausência de sinais inflamatórios, que se pensa ser uma resposta protetora. No tecido conjuntivo perivasculo-ductal da glândula parótida seguem artérias, veias e a árvore ductal. Crê-se que o tecido conjuntivo perivasculo-ductal funcione como um estabilizador mecânico do tecido glandular.Material e Métodos: Para quantificar a proliferação de tecido conjuntivo perivasculo-ductal em ratos expostos a ruído de baixafrequência de alta amplitude foram utilizados 60 ratos Wistar igualmente divididos em seis grupos. Um grupo mantido em silêncio, e os restantes 5 expostos a ruído de baixa frequência de alta amplitude continuamente: g1-168h (1 semana); g2-504h (3 semanas); g3-840h (5semanas); g4-1512h (9 semanas) e g5-2184h (13 semanas). Após a exposição, as parótidas foram removidas e o tecido conjuntivo perivasculo-ductal foi medido em todos os grupos. Foi efectuada análise estatística com ANOVA por SPSS 13.0.Resultados: A tendência é um aumento global das áreas do tecido conjuntivo perivasculo-ductal, que se desenvolve de forma linear e significativa com o tempo de exposição (p < 0,001).Discussão: Tem sido sugerido que a resposta biológica à exposição ao ruído de baixa frequência de alta amplitude está associada à necessidade de manter a integridade estrutural. O reforço estrutural seria conseguido através do aumento do tecido conjuntivo perivasculo-ductal.Conclusões: Assim, estes resultados mostram que o tecido conjuntivo perivasculo-ductal aumenta em resposta à exposição ao ruído de baixa frequência de alta amplitude.

  17. Nutritional assessment in hepatic cirrhosis; clinical, anthropometric, biochemical and hematological parameters.

    PubMed

    Vieira, Patricia M; De-Souza, Daurea A; Oliveira, Luiz Carlos M

    2013-01-01

    Introducción: Desde la malnutrición es común en pacientes con cirrosis hepática (CH) es necesario investigar la interferencia de los cambios fisiopatológicos de hígado en los métodos de diagnóstico del estado nutricional. Objetivo: Evaluar la frecuencia de desnutrición en los pacientes con CH ambulatoria, utilizando diferentes métodos de evaluación del estado nutricional. Métodos: El estado nutricional se determinó mediante la valoración global subjetiva (VGS), índice de masa corporal (IMC), porcentaje de peso corporal ideal (% PCI), el pliegue del tríceps (% PT), circunferencia del brazo (% CB) y de la ideales mediados de circunferencia muscular del brazo (% CMB), albúmina de suero (ALB) y recuento total de linfocitos (RTL). Resultados: Setenta y ocho pacientes fueron evaluados, el 56,4% eran varones y la edad media fue 53,0 ± 7,7 años. La etiología fue alcohólica CH en el 56,4% de los casos. De acuerdo con la clasificación de Child-Pugh, el 48,7% eran A, el 26,9% fueron el B y el 24,4% fueron C. Grados variables de desnutrición fueron diagnosticados en un 61,5% (VGS), 16,7% (IMC), 17,9% (% PCI), 93,6% (% PT), 62,8% (% CB) y 38,5% (CMB%) de los pacientes. Los niveles de ALB y RTL fueron compatibles con el diagnóstico de la desnutrición en 43,6% y 69,2% de los pacientes, respectivamente. La frecuencia de diagnóstico de la malnutrición aumenta de acuerdo con la gravedad de CH y también aumentó en los pacientes con etiología alcohólica. Una disminución mayor de tejido adiposo en las mujeres y de tejido muscular en los hombres fue demostrada. Conclusiones: La frecuencia de diagnóstico de la malnutrición en ambulatorio de pacientes tratados varía de acuerdo con el método de evaluación nutricional utilizado. La prevalencia de desnutrición es mayor en las etapas más avanzadas de la CH y de etiología alcohólica.

  18. [Prevalence of allergic sensitization to bee, mosquito and red ant in children with allergic disease].

    PubMed

    Flores-Ruiz, Leobardo Francisco; Valdez-López, Francisco; Bedolla-Barajas, Martín

    2015-01-01

    Antecedentes: en población pediátrica, pocas veces se busca la sensibilización alérgica a insectos de los órdenes Hymenoptera y Culicidae. Objetivo: establecer la prevalencia de sensibilización a abeja, mosco y hormiga roja en niños con enfermedades alérgicas. Material y método: estudio retrolectivo y descriptivo, en el que se revisaron los registros de la reactividad cutánea a alergenos de abeja, mosco y hormiga en un servicio de Alergia Pediátrica de enero de 2009 a diciembre de 2011. Se estimó la frecuencia de sensibilización y sus respectivos intervalos de confianza de 95% (IC95%). Resultados: se incluyeron 613 pacientes, 41% era del sexo femenino; la edad media del grupo fue de 6.2±3.7 años. La sensibilización alérgica al mosco fue de 15% (IC95%: 12.4 a 18.1), a abeja de 14% (IC95%: 11.4 a 16.9) y a hormiga roja de 6% (IC95%: 6.0 a 6.8); por sexo, la frecuencia no difirió significativamente. Los niños sensibles a las abejas o a las hormigas rojas tuvieron mayor edad que los no sensibilizados: 7.1 vs 6.0 años (p=0.011) y 7.4 vs 6.1 años (p=0.042), respectivamente. Durante las estaciones de otoño e invierno predominó la sensibilización a la hormiga roja. Conclusiones: hasta nuestro conocimiento, éste es el primer informe en México relacionado con la frecuencia de sensibilización a abejas, moscos y hormigas rojas realizado en niños. Además, nuestros resultados sugieren que se debe identificar de manera habitual la sensibilidad a estos insectos.

  19. [Frequency of sensitization to pollens of the subclass Rosidae in patients with respiratory allergy].

    PubMed

    Bedolla-Barajas, Martín; Valdez-López, Francisco; Arceo-Barba, Julieta; Bedolla-Pulido, Tonatiuh Ramses; Hernández-Colín, Dante; Morales-Romero, Jaime

    2014-01-01

    Antecedentes: los estudios relacionados con los patrones de sensibilización a especies de aeroalergenos poco comunes son infrecuentes. Objetivo: determinar la frecuencia de sensibilización a pólenes de relevancia alergológica provenientes de la subclase Rosidae en pacientes con alergia respiratoria. Pacientes y método: estudio descriptivo y transversal en el que se incluyeron pacientes de manera consecutiva a un grupo con rinitis alérgica y a otro con asma. Se estudiaron mediante historia clínica, exploración física y reactividad cutánea a un panel de alergenos, que incluyó a las especies Prosopis, Schinus, Acacia y Eucalyptus. Se determinaron las frecuencias de sensibilización y sus intervalos de confianza a 95% (IC 95%) respectivos. Resultados: se estudiaron 104 pacientes con rinitis alérgica y 99 con asma; en ambos grupos la media de edad se ubicó en la cuarta década de la vida y hubo predomino de mujeres. En los pacientes con rinitis alérgica se observó la siguiente frecuencia de sensibilización: mezquite 26.2% (IC 95%: 17.7 a 34.6%), pirul 11.5% (IC 95%: 5.4 a 17.6%), eucalipto 6.7% (IC 95%: 1.9 a 11.5%) y acacia 3% (IC 95%: 0.3 a 6.3%). En los sujetos con asma la conducta fue la siguiente: mezquite 13.1% (IC 95%: 6.5 a 19.7%), pirul 7.1% (IC 95%: 2 a 12.2%), eucalipto 4 (IC 95%: 0.1 a 7.9%) y acacia 3% (IC 95%: 0.4 a 6.4%). Los dos grupos manifestaron un predominio de sensibilización por los fresnos y encinos; al final se encontraron eucalipto, pino y acacia. Conclusión: la capacidad de sensibilización de los árboles analizados, con excepción del mezquite, es menor.

  20. PREVALENCE OF AUTOIMMUNE THYROIDITIS AND THYROID DYSFUNCTION IN HEALTHY ADULT MEXICANS WITH A SLIGHTLY EXCESSIVE IODINE INTAKE.

    PubMed

    Flores-Rebollar, Armando; Moreno-Castañeda, Lidia; Vega-Servín, Norman S; López-Carrasco, Guadalupe; Ruiz-Juvera, Aída

    2015-08-01

    Objetivo: el objetivo del presente estudio fue evaluar la prevalencia de tiroiditis autoinmune y disfunción tiroidea en individuos sanos sin enfermedad tiroidea conocida, de un área urbana de la ciudad de México. Material y métodos: el estudio se realizó en voluntarios sin enfermedad tiroidea conocida. Se reclutaron 427 individuos entre personal médico y administrativo del hospital. A todos se les realizó ultrasonido (US) tiroideo, TSH, T4 libre (FT4), T3 total (TT3), anticuerpos anti-peroxidasa tiroidea (TPOAb) y anti tiroglobulina (TgAb). Dentro de la evaluación por US se incluyó la hipoecogenicidad y el volumen tiroideo. También se midió la excreción urinaria de yodo (UI). Resultados: la frecuencia de tiroiditis autoinmune fue de 8,4% (36/427), las mujeres fueron más afectadas que los hombres (11,6 vs. 4,3%, respectivamente, P = 0,008), cuando se sumó la tiroides atrófica, esta frecuencia se elevó al 15,7% (67/427) de los estudiados. El hipotiroidismo clínico fue detectado en el 1,2% (5/427) y el subclínico en el 5,6%. El hipertiroidismo clínico solo se observó en el 0,5% (2/427) y el subclínico en el 1,9%. El bocio se identificó en el 5,9% (25/427) de los voluntarios. La mediana de la UI fue de 267 μg/L, RIQ (161,3 – 482,5). Conclusiones: a pesar de las limitaciones de nuestro estudio, es clara la frecuencia incrementada de tiroiditis autoinmune en la población estudiada. Son necesarios más estudios que definan tanto la prevalencia de enfermedad tiroidea autoinmune como el estatus nutricional de yodo actual en nuestro país.

  1. Dinámica de pulsares jóvenes

    NASA Astrophysics Data System (ADS)

    Allen, M. P.; Horvath, J. E.

    La observación detallada de los pulsos en varios pulsares jóvenes (τ < 105 yr) permitió detectar varios aumentos en la frecuencia de emisión gliches con cambios permanentes en Δ {˙ Ω} / {˙ Ω}. A través de las ecuaciones de movimiento se investiga, utilizando parametrizaciones simples, la hipótesis de que el ángulo entre Ω y el dipolo magnético M sea responsable de ese comportamiento. Se derivan curvas analíticas para la evolución de Ω (t) y se estudia la posibilidad de describir un conjunto de observables (incluyendo el braking index n) con estos modelos.

  2. Conceptos Basicos Sobre el Propano

    SciTech Connect

    2016-08-01

    El propano provee energia a mas de 143.000 vehiculos en los Estados Unidos y 23 millones en todo el mundo. Flotas de todos los Estados Unidos han implementado con exito el uso de vehiculos que funcionan con gas propano, y en la actualidad varios funcionan gracias a este gas, incluyendo autobuses escolares, lanzaderas y autobuses publicos, asi como tambien furgonetas, taxis, vehiculos utilizados por las fuerzas del orden, barredoras de calles y camiones para uso profesional. El propano tambien se utiliza con frecuencia en aplicaciones fuera de la carretera, tales como montacargas, podadoras y equipos de uso profesional y otros equipos agricolas. Las ventajas del propano incluyen la disponibilidad interna, su rendimiento y el hecho de que genera menos emisiones de gases contaminantes que otras alternativas energeticas.

  3. [Nosocomial infections. Trends over a 12 year-period in a pediatric hospital].

    PubMed

    Zamudio-Lugo, Irma; Espinosa-Vital, Guadalupe Judith; Rodríguez-Sing, Roberta; Gómez-González, Claudia Josefina; Miranda-Novales, María Guadalupe

    2014-01-01

    INTRODUCCIÓN: las infecciones nosocomiales constituyen uno de los principales problemas de salud en los hospitales, por ello, los programas de prevención y control deben ser evaluados con el impacto en las tasas de incidencia. El objetivo de esta investigación fue identificar la tendencia de las infecciones nosocomiales durante un periodo de 12 años en un hospital pediátrico de tercer nivel. MÉTODOS: se llevó a cabo un estudio de cohorte retrospectivo en el que se incluyeron todos los pacientes hospitalizados que presentaron infecciones nosocomiales. El análisis estadístico de los datos incluyó frecuencias simples, proporciones y densidad de incidencia por año, sitio de infección y letalidad.

  4. Cúmulos globulares como trazadores de bimodalidad estelar en galaxias cD

    NASA Astrophysics Data System (ADS)

    Forte, J. C.

    Se muestra que tanto la forma de los perfiles de brillo como de color observados en dos galaxias arquetípicas de tipo cD (NGC 1399 y NGC 4486) son compatibles con la presencia de poblaciones estelares bi-modales que comparten la misma distribución espacial y composición química de las familias dominantes de cúmulos globulares asociadas con ellas. El modelo resultante también predice una variación de la frecuencia específica de los cúmulos como función del radio galactocéntrico. Se discute este resultado en el contexto de una variedad de escenarios astrofísicos que intentan describir la formación de galaxias cD.

  5. Transient hyperthyroidism after total laryngectomy for laryngeal cancer.

    PubMed

    Salazar Thieroldt, Eduardo; Boado Lama, Jorge; Molinero Abad, Sheila; Miján de la Torre, Alberto

    2014-10-24

    Introducción: La tiroitidis postquirúrgica es una complicación de la laringectomía total (TL) y pueden ser causada por manipulación de la glándula. Existen descripciones aisladas en la literatura referentes a hipertiroidismo transitorio (HT) en el postoperatorio de cirugía de cabeza y cuello. El objetivo del presente estudio es relacionar la frecuencia de HT tras TL y evaluar su relación con el procedimiento quirúrgico. Métodos: Estudio de cohorte retrospectiva. Se incluyeron 44 pacientes y se estratificaron en Grupo 1 (TL y faringectomía), y grupo 2 (TL y disección cervical). Se midió la función tiroidea postoperatoria a todos los pacientes. Los resultados fueron analizados con el test de chi cuadrado con corrección de Yates y OR (p.

  6. [Complications of endoscopic nasal and sinus surgery: experience in 150 patients].

    PubMed

    Vargas-Aguayo, Alejandro Martín; Copado-Ceballos, Rosalba Elizabeth; Vivar-Acevedo, Eulalio; Waizel-Haiat, Salomón; Contreras-Herrera, Roxana; Desentis-Vargas, Eduardo

    2014-01-01

    INTRODUCCIÓN: la cirugía endoscópica de la nariz y senos paranasales ha tenido un gran auge para tratar la patología inflamatoria y tumoral, y para abordar estructuras extrasinusales. Aunque ha demostrado ser un método muy exitoso, no deja de ser motivo de complicaciones. El objetivo de esta investigación fue identificar la frecuencia de complicaciones en los pacientes con patología nasosinusal sometidos a cirugía endoscópica de nariz y senos paranasales. MÉTODOS: se evaluaron 150 pacientes operados por vía endoscópica, 75 mujeres y 75 hombres, en un hospital de especialidades del Instituto Mexicano del Seguro Social. Se registró tipo de patología, tipo de cirugía endoscópica realizada y sus complicaciones mayores y menores.

  7. Mejoras en el apuntado del telescopio de 2,15 mts de CASLEO

    NASA Astrophysics Data System (ADS)

    Aballay, J. L.; Casagrande, A. R.; Pereyra, P. F.; Marún, A. H.

    Con el objeto de optimizar el funcionamiento del telescopio de 2,15 mts. de CASLEO, se están eliminando los motores de calar, de guía y mecánica asociada. Para ésto, se están diseñando dos electrónicas que gobernarán, solamente, el motor de slew y el de tracking. Con el control del motor de slew se realizarán las funciones de slew y calar, controlando desde una PC la placa que maneja las rampas de velocidad. De este modo, el movimiento será programado y por lo tanto, más suave y preciso. Con el control del motor de tracking, a través de un generador de frecuencias programable desde una PC, se proveerá los movimientos necesarios para el tracking y guía.

  8. Female breast symptoms in patients attended in the family medicine practice.

    PubMed

    González-Pérez, Brian; Salas-Flores, Ricardo; Sosa-López, María Lucero; Barrientos-Guerrero, Carlos Eduardo; Hernández-Aguilar, Claudia Magdalena; Gómez-Contreras, Diana Edith; Sánchez-Garza, Jorge Arturo

    2013-01-01

    Introducción: en México, en las unidades del primer nivel hay pocos estudios sobre los síntomas mamarios. El objetivo fue determinar la frecuencia de los síntomas y los más asociados con el diagnóstico de cáncer. Métodos: se recabó información de las pacientes atendidas de 2006 a 2010 con enfermedad de mama de una unidad de medicina familiar. Se determinaron las frecuencias de los síntomas mamarios en los grupos etarios < 19, 20-49, 50-69, > 70 años y los cocientes de probabilidad (LR) de cáncer de mama para cada síntoma, con un intervalo de confianza (IC) de 95 %. Resultados: casi todas las quejas derivaron de una masa o tumoración (71.7 %) y dolor mamario (67.7 %). Presentaron cáncer de mama 120 mujeres, con un promedio de edad de 53.51 + 12.7 años. La tumoración/masa en el seno tuvo un LR+ para cáncer de mama de 4.53 (IC 95 % = 2.51-8.17) y un LR+ para dolor mamario de 1.08, 95 % (IC 95 % = 1.05-1.11). Conclusiones: la presentación de la tumoración/masa predominó como queja en nuestra unidad y estuvo asociada con un LR+ para cáncer de mama.

  9. [Results of vagal nerve stimulation in patients with pharmacoresistant epilepsy in a national epilepsy referral centre].

    PubMed

    Roldan-Ramos, P; Reyes-Figueroa, L A; Rumia, J; Martinez-Lizana, E; Donaire, A; Carreno-Martinez, M

    2016-11-01

    Objetivos. Describir los resultados clinicos y complicaciones derivados de la estimulacion vagal en pacientes con epilepsia farmacorresistente no tributaria de otras modalidades de tratamiento quirurgico, desde el primer implante en un centro de referencia nacional. Pacientes y metodos. Se realizo un analisis retrospectivo de los pacientes implantados en nuestro centro y se extrajeron datos relativos a las caracteristicas basales de su epilepsia y complicaciones derivadas. Resultados. Se incluyeron 32 nuevos implantes en 31 pacientes, con una edad media de 34 años, evolucion de enfermedad de 29,3 años, tres farmacos antiepilepticos prequirurgicos y 4,03 años de seguimiento. Las crisis parciales complejas (71,9%) y criptogenicas (59,4%) fueron el tipo y la etiologia de crisis mas frecuentes. El 75% no tenia antecedentes quirurgicos de epilepsia. Un 43,8% presento mejoria igual o superior al 50%, mayor en las epilepsias parciales complejas (p = 0,22) y la etiologia criptogenica. No se hallo asociacion estadistica entre ajustes de medicacion y frecuencia de las crisis. Los efectos secundarios encontrados fueron disfonia, ronquera y disfagia transitorias, y una asistolia intraoperatoria recuperada. Se realizo un recambio por ruptura de hardware postraumatica. Un paciente con paresia preexistente de cuerda vocal presento estridor laringeo que requirio ajuste de intensidad, y se produjo una retirada del sistema por disfuncion. En el 84,4%, la tolerancia fue excelente. Conclusiones. Constituye un tratamiento efectivo para mejorar significativamente la frecuencia de crisis de los pacientes farmacorresistentes y con contraindicacion para otras modalidades de tratamiento quirurgico. Se precisan futuros estudios para predecir la respuesta individual de cada paciente, optimizar las indicaciones y mejorar la relacion coste/beneficio.

  10. [Adverse event reporting in an intensive care unit at Tunja, Colombia].

    PubMed

    Riveros, Efraín; Amado, Paula; Zambrano, Paula

    2013-01-01

    Introducción: La seguridad de paciente en áreas hospitalarias críticas ha sido tema de diversas investigaciones. En este sentido, en Colombia está creciendo la conciencia acerca de la gestión de eventos adversos. Este estudio explora la primera fase de dicha gestión: el reporte en la unidad de cuidado intensivo de una institución privada prototipo. Objetivo: Evaluar el reporte de eventos adversos en una clínica colombiana de tercer nivel, a través de la estimación de frecuencias y categorías de los reportes. Material y Métodos: Se hizo un estudio descriptivo sobre la tasa de reporte de eventos adversos en la Clínica de los Andes de Tunja, durante 2011, a través de la estimación de frecuencias y categorías de los reportes.La tasa de reporte se definió como el número de reportes por 1000 días cama. Reportamos las categorías de los eventos adversos comomayores y menores. Resultados: Se registraron 383 admisiones a la UCI, correspondientes a 2374 días paciente. Se presentaron un total de 54 eventos adversos reportados (tasa de 22,74 por 1000 días paciente). El tipo de evento más frecuente fue el relacionado con vías intravenosas (55%)(IC 95% 50,1-58,3), seguido por desviación de procesos (22%)(IC 95% 18,2-26,1). Conclusiones: Se encontróuna tasa de reporte de eventos adversos en el rango superior de lo publicado en la literatura. Posiblemente exista aúnuna proporción no cuantificada de subregistro, que puede atribuirse principalmente a factores culturales.

  11. [The atypical developments of rolandic epilepsy are predictable complications].

    PubMed

    Pesántez-Ríos, Gabriela; Martínez-Bermejo, Antonio; Arcas, Joaquín; Merino-Andreu, Milagros; Ugalde-Canitrot, Arturo

    2015-08-01

    Introduccion. Las evoluciones atipicas de la epilepsia rolandica son parte de un espectro clinico de fenotipos variables, idiopaticos, dependientes de la edad y con una predisposicion geneticamente determinada. Objetivo. Estudiar las caracteristicas electroclinicas sugestivas de una evolucion atipica en la epilepsia rolandica. Pacientes y metodos. Se realizo una busqueda retrospectiva de 133 niños diagnosticados de epilepsia focal benigna atipica (EFBA), sindrome de Landau-Kleffner y epilepsia de punta-onda continua durante el sueño (POCS). Se seleccionaron nueve pacientes que, en el trascurso de su epilepsia rolandica, presentaron un cuadro clinico atipico y un patron electroencefalografico (EEG) de estado epileptico electrico durante el sueño (ESES). Resultados. El inicio de la epilepsia rolandica fue, en promedio, a los 5 años. Los pacientes presentaron un empeoramiento clinico y del EEG año y medio mas tarde en promedio. En tres pacientes se observaron caracteristicas de EFBA, y en seis, de POCS. No se encontraron casos de sindrome de Landau-Kleffner. El EEG en vigilia mostro una focalidad centrotemporal izquierda en seis pacientes, y derecha, en tres. Todos los pacientes presentaron un ESES en el EEG de sueño. En tres de ellos se observo un patron atipico de ESES regional. Ademas, se detectaron alteraciones cognitivas y conductuales por deficits en areas especificas del aprendizaje, como lenguaje, memoria, atencion e inquietud. Conclusiones. El inicio precoz de la epilepsia rolandica, la aparicion de nuevas crisis con un incremento en su frecuencia y una focalidad frontocentrotemporal en el EEG, que aumenta en frecuencia, tanto en vigilia como en sueño, son caracteristicas electroclinicas sugerentes de una evolucion atipica.

  12. [Adverse events during diagnostic and therapeutic pediatric cardiac catheterization].

    PubMed

    Zepeda-Arámbula, Armando; Gutiérrez-Cobian, Lorenzo; Villatoro-Fernández, Jorge Luis; Pacheco-López, Sandra Livier; Tlacuilo-Parra, Alberto

    2016-01-01

    Introducción: el objetivo de este trabajo fue determinar la frecuencia de eventos adversos durante la realización de cateterismo cardíaco tanto diagnóstico, como terapéutico pediátrico. Métodos: se revisaron los expedientes de pacientes sometidos a cateterismo cardiaco durante el periodo del 1 de Mayo al 31 de Octubre de 2014, para determinar la frecuencia de eventos adversos presentados en las primeras 24 horas posteriores al procedimiento. Resultados: durante el periodo de seis meses se realizaron 143 procedimientos, de los cuales cumplieron criterios de inclusión 126, según el tipo de procedimiento se dividieron en: diagnósticos 68 (54%) y terapéuticos 58 (46%). Se presentó algún evento adverso en 16 pacientes (13% de los procedimientos), 11.7% durante cateterismo diagnóstico y 14% durante el procedimiento terapéutico. Se clasificaron como: serios 7 (5.5%), que ponen en peligro la vida 5 (3.9%) y como catastróficos 1 (0.79%). Los factores que se asociaron con el desarrollo de algún evento adverso fueron: edad menor de un año (OR = 5.45), ingreso a sala de hemodinamia no programado (OR = 1.2), y manejo con inotrópico (OR = 7). Conclusiones: el cateterismo cardiaco realizado en nuestra unidad es un procedimiento seguro, con un porcentaje de eventos adversos similar a lo reportado a nivel mundial. Es primordial efectuar una valoración adecuada e integral del paciente antes del ingreso a sala, considerando la estratificación según las categorías de riesgo, así como el estado de gravedad del niño.

  13. [Charles Bonnet syndrome. A 45-case series].

    PubMed

    Santos-Bueso, Enrique; Serrador-García, Mercedes; Porta-Etessam, Jesús; Rodríguez-Gómez, Octavio; Martínez-de-la-Casa, José M; García-Feijoo, Julián; García-Sánchez, Julián

    2015-04-16

    Introduccion. El sindrome de Charles Bonnet (SCB) es un cuadro clinico que se caracteriza por la presencia de alucinaciones visuales, principalmente complejas, en pacientes con estado cognitivo conservado e importante deterioro de la vision. El incremento del SCB se debe al aumento de la esperanza de vida y al desarrollo de patologias asociadas al envejecimiento, como la degeneracion macular asociada a la edad. Pacientes y metodos. Se estudian las caracteristicas de una serie de 45 pacientes diagnosticados de SCB en la unidad de neurooftalmologia del Hospital Clinico San Carlos. Los pacientes procedian de las unidades de patologia macular, glaucoma, superficie ocular y urgencias, en las que fueron diagnosticados de SCB, que se confirmo en la unidad multidisciplinar formada por oftalmologia, neurologia y psiquiatria del mismo hospital. Resultados. El 66,66% eran mujeres, de mas de 80 anos (68,88%), principalmente con degeneracion macular asociada a la edad (37,77%). Las alucinaciones que los pacientes presentaban con mas frecuencia eran personas y caras (35,55%), en color (66,66%), en movimiento (80%), con un tiempo de evolucion de 6-12 meses (26,66%), frecuencia de tres episodios al dia (35,55%) y de 3-5 minutos de duracion (35,55%). Conclusiones. El SCB es un complejo sindrome cuya incidencia se esta incrementando en nuestras consultas y que precisa un abordaje multidisciplinar entre oftalmologos, neurologos y psiquiatras para evitar diagnosticos erroneos y proporcionar un tratamiento adecuado. Son necesarios nuevos estudios para un conocimiento mas profundo y adecuado del SCB.

  14. [THE COMPARISON BETWEEN FOOD HABITS AND PHYSICAL CONDITION AMONG PHYSICAL EDUCATION AND OTHER UNDERGRADUATE STUDENTS].

    PubMed

    Valdes-Badilla, Pablo; Godoy-Cumillaf, Andrés; Herrera-Valenzuela, Tomás; Durán-Agüero, Samuel

    2015-08-01

    Introducción: los estudiantes universitarios manifiestan mayor susceptibilidad a la hora de adquirir hábitos inadecuados durante su formación, que podrían asentarse a lo largo de su vida. Objetivo: comparar los hábitos alimentarios y la condición física entre estudiantes de Educación Física y otras carreras universitarias de la misma universidad y sede. Métodos: la muestra incluyó a 343 estudiantes, hombres (70%), 212 estudiantes pertenecientes a la carrera de Educación Física (EF) y 131 estudiantes a otras carreras (OC) de la Universidad Autónoma de Chile, sede Temuco. A cada estudiante se le aplicó una encuesta de hábitos alimentarios validada y pruebas de condición física. Resultados: los estudiantes varones de EF presentan una menor frecuencia para el consumo de lácteos, verduras y alcohol (p < 0,05); en cambio las mujeres de EF presentan mayor frecuencia de consumo de comida casera, galletas y snacks dulces (p < 0,05). Mientras que la condición física, como es de esperar, alcanza mejor rendimiento en los estudiantes de EF. Conclusión: al parecer no existen grandes diferencias entre los hábitos alimentarios de los estudiantes de EF y los de OC de la misma universidad, mientras que la condición física es concordante al mayor estímulo que reciben los estudiantes de EF en su formación académica, que les serviría de excusa para consumir mayor cantidad de bebidas azucaradas, comida basura, galletas y snacks dulces.

  15. [Detection of the PMP22 gene duplication in peripheral neuropathy patients: a study in Mexican population].

    PubMed

    Cortés, Hernán; Hernández-Hernández, Óscar; Bautista-Tirado, Teresa; Escobar-Cedillo, Rosa Elena; Magaña, Jonathan J; Leyva-García, Norberto

    2014-08-01

    Introduccion. La enfermedad de Charcot-Marie-Tooth (CMT) es una neuropatia que afecta los nervios motores y sensitivos, y la CMT1A es el subtipo mas frecuente en el mundo. La CMT1A se produce por una duplicacion de 1,5 Mb en el locus 17p11.2-p12, donde se localiza el gen PMP22. Para el diagnostico de CMT1A es importante contar con tecnicas moleculares especificas para la determinacion de esta mutacion. Objetivos. Establecer un metodo de uso rutinario para detectar la duplicacion de PMP22 en la poblacion mexicana y estimar su frecuencia en pacientes con caracteristicas clinicas para la CMT. Pacientes y metodos. Se analizaron 157 pacientes mexicanos no relacionados entre si, diagnosticados de CMT por valoracion clinica. La determinacion de la duplicacion de PMP22 se realizo a traves de reaccion en cadena de la polimerasa en tiempo real mediante el metodo comparativo 2–ΔΔCT. Resultados. El metodo 2–ΔΔCT para detectar la duplicacion del gen PMP22 mostro ser sensible y fiable. Los resultados fueron consistentes con los obtenidos mediante la tecnica de hibridacion in situ fluorescente. Se detecto la duplicacion de PMP22 en 79 pacientes (50,3%), con un comportamiento similar a lo comunicado en Estados Unidos, Australia, Finlandia, Suecia y España. Sin embargo, se observo que existen diferencias con otras poblaciones. Conclusiones. La tecnica de reaccion en cadena de la polimerasa cuantitativa se implemento como un diagnostico molecular de CMT1A eficaz y de bajo coste, por lo que puede utilizarse rutinariamente en Mexico. Esto es esencial para el asesoramiento genetico y el tratamiento oportuno de los pacientes con CMT. La frecuencia de la duplicacion del gen PMP22 varia entre regiones geograficas, por lo que es importante estimarla en diferentes poblaciones.

  16. [Experience in the treatment of patent ductus arteriosus closure at a mexican hospital].

    PubMed

    Márquez-González, Horacio; Castro-Contreras, Uriel; Cerrud-Sánchez, Carmen Emma; López-Gallegos, Diana; Yáñez-Gutiérrez, Lucelli

    2016-01-01

    Introducción: la persistencia del conducto arterioso (PCA) representa una de las enfermedades con mayor prevalencia en los hospitales que atienden cardiopatías congénitas (CC). En la actualidad en pacientes mayores de un año de edad el cierre percutáneo es la terapéutica estándar. El objetivo de este trabajo fue conocer la frecuencia, características y tratamiento de PCA en el servicio de Cardiopatías Congénitas en el Hospital de Cardiología del Centro Médico Nacional Siglo XXI. Métodos: en el servicio de Cardiopatías Congénitas del Hospital de Cardiología del CMN SXXI se realizó un estudio descriptivo de 2010 a 2015 de los enfermos que fueron tratados con cierre percutáneo y cirugía de PCA. Se dividieron en las siguientes edades: lactantes, preescolares, escolares, adolescentes y adultos. Se registraron las frecuencias absolutas. Resultados: se seleccionaron 187 pacientes, de los cuales los preescolares y escolares representaron el 60% del total de la muestra. El cierre percutáneo por cateterismo intervencionsta se realizó en 90%; se registró un 2% de complicaciones. Conclusiones: en esta clínica de cardiopatías congénitas, la PCA es tratada por cateterismo intervencionista en la mayoría de las etapas del ser humano, lo que ha registrado mínimas complicaciones.

  17. [Prevalence of eating disorders in college students and associated factors: uniHcos project].

    PubMed

    Martínez-González, Leticia; Fernández Villa, Tania; Molina de la Torre, Antonio José; Ayán Pérez, Carlos; Bueno Cavanillas, Aurora; Capelo Álvarez, Rocío; Mateos Campos, Ramona; Martín Sánchez, Vicente

    2014-10-01

    Introducción: Los trastornos de la conducta alimentaria (TCA) son especialmente frecuentes en los jóvenes. Objetivo: Determinar la prevalencia de TCA en jóvenes universitarios y sus factores asociados. Metodología: Estudio de prevalencia en jóvenes universitarios españoles del proyecto uniHcos. Mediante regresión logística no condicional se determinó la magnitud de la asociación entre los factores de riesgo asociados al estilo de vida y padecer un TCA medido mediante el cuestionario Sick, Control, One, Fat, Food (SCOFF). Resultados: La prevalencia de TCA fue del 19,5%, siendo mayor en mujeres (ORa=1,59; p=0,006). En los chicos, tener criterios de padecer TCA se asoció con vivir en colegios mayores, con realizar “binge drinking”, y uso problemático de internet. En las mujeres el estudiar titulaciones diferentes a las ciencias de la salud (ORa=1,50) y el uso problemático de internet (ORa=2,33). Aquellas mujeres con riesgo de TCA presentaban con mayor frecuencia depresión (ORa=2,02), dolores menstruales (ORa=1,81) y mala salud percibida (ORa=1,70). En los hombres, aquellos con riesgo de TCA presentaban con mayor frecuencia una mala salud percibida (ORa=2,42). Conclusiones: El riesgo de obtener resultados positivos en el SCOFF en nuestro estudio es similar a lo publicado para otras poblaciones de estudiantes, así como su asociación con determinadas adicciones y problemas de salud. Se observaron diferencias en función del sexo que precisan atención en el diseño de estrategias de prevención y control.

  18. [Retrospective analysis of the effect of a vagus nerve stimulator implanted in paediatric patients with refractory epilepsy].

    PubMed

    Fuentes-Pita, P; Gomez-Lado, C; Dacruz, D; Eiris-Punal, J; Prieto-Gonzalez, A; Castro-Gago, M

    2016-07-01

    Introduccion. El estimulador vagal es una alternativa terapeutica en los pacientes con epilepsia refractaria al tratamiento con farmacos antiepilepticos que no son candidatos a cirugia de reseccion. Objetivo. Analizar la eficacia del estimulador vagal en los pacientes pediatricos de nuestro centro. Pacientes y metodos. Conjunto de 13 pacientes implantados entre los años 2008 y 2013. Se registro la frecuencia de crisis previa a la implantacion, al año, a los dos años y al final del seguimiento. Asimismo, se recogio el numero de farmacos antiepilepticos utilizados, de forma cualitativa la mejoria conductual y el cambio en la intensidad de las crisis, asi como la aparicion de efectos secundarios y la retirada o no del dispositivo. Resultados. Al año, a los dos años y al final del seguimiento se habia producido una reduccion en el numero de crisis del 61%, 66,7% y 69%, respectivamente, y uno de los pacientes se encontro libre de crisis a los dos años. Al final del seguimiento, un 23% de los que habian disminuido sus crisis habia experimentado una reduccion superior al 90%. De forma independiente al efecto sobre el numero de crisis, el 77% de los pacientes presento una mejoria en la intensidad y duracion de las crisis, y ese mismo porcentaje mostro una mejoria conductual. Los efectos secundarios aparecieron en un 30,7% de los pacientes y fueron de intensidad leve. Conclusiones. A pesar del pequeño tamaño de la muestra, nuestros resultados indican que el estimulador vagal tiene una eficacia relevante en la poblacion pediatrica farmacorresistente, tanto sobre la frecuencia e intensidad de las crisis como sobre la conducta.

  19. [Effectiveness of a ketogenic diet in children with refractory epilepsy: a systematic review].

    PubMed

    Araya-Quintanilla, F; Celis-Rosati, A; Rodriguez-Leiva, C; Silva-Navarro, C; Silva-Pinto, Y; Toro-Jeria, B

    2016-05-16

    Introduccion. La epilepsia es una patologia cerebral que afecta tanto a niños como a adultos. Desde los años veinte, la dieta cetogenica ha ganado prestigio como otra opcion de tratamiento en pacientes con epilepsia refractaria. Sujetos y metodos. Se realiza una sintesis de la evidencia a traves de una revision sistematica de ensayos clinicos aleatorizados que hayan comparado una dieta cetogenica sola con otros tipos de dieta para el tratamiento de estos pacientes. Objetivo. Determinar la efectividad de la dieta cetogenica en la disminucion de los episodios de convulsiones en pacientes con epilepsia refractaria. La estrategia de busqueda incluyo ensayos clinicos aleatorizados y ensayos clinicos controlados. Las bases de datos usadas fueron: Medline, LILACS, Central y CINAHL. Resultados. Se obtuvieron seis articulos que cumplian con los criterios de elegibilidad. Conclusiones. Existe evidencia limitada de que la dieta cetogenica en comparacion con la dieta de trigliceridos de cadena media es mas efectiva en disminuir la frecuencia de las convulsiones. Existe evidencia moderada de que la dieta cetogenica clasica en comparacion con la dieta gradual (2,5:1 y 3:1) es mas efectiva para disminuir las crisis epilepticas. Existe evidencia moderada de que la dieta cetogenica clasica en comparacion con la dieta Atkins es mas efectiva para disminuir la frecuencia de convulsiones en tres meses. La decision de aplicar este tipo de dietas tambien debe basarse en costes, preferencias y seguridad del tratamiento. Ademas, debe considerarse la probabilidad de que algunos estudios, por problemas de indizacion, hayan quedado fuera de la revision.

  20. OVERWEIGHT OBESITY AND CARDIOVASCULAR RISK IN MENOPAUSAL TRANSITION.

    PubMed

    Villaverde Gutiérrez, Carmen; Ramírez Rodrigo, Jesús; Olmedo Alguacil, Maria Milagrosa; Sánchez Caravaca, Maria Angeles; Argente del Castillo Lechuga, Maria Josefa; Ruiz Villaverde, Alberto

    2015-10-01

    Introducción: el declive hormonal característico de la menopausia, junto al aumento ponderal añadido, está considerado como un factor determinante de riesgo cardiovascular. Propósito: examinar la situación ponderal en relación con la sintomatología clínica, durante la transición menopáusica, en mujeres derivadas desde atención primaria a la especialidad de endocrinología, para describir los posibles perfiles de riesgo cardiovascular. Método: se realizó un diseño observacional, analítico, de corte transversal, con los datos registrados en las historias clínicas en el momento de la derivación. 805 mujeres con 40 y más años de edad disponían de los registros necesarios para la estimación del riesgo cardiovascular. Resultados: la agrupación jerárquica distingue cuatro grupos. La frecuencia de obesidad en todos ellos superó el 60%, observándose los mayores promedios de riesgo cardiovascular en las mujeres de mayor edad y elevada frecuencia de obesidad e hipertensión arterial. En los grupos de menor edad, la estimación del riesgo fue baja, incrementándose hasta niveles similares a los de mayor edad, al proyectarlo a 65 años. Conclusión: estos resultados sugieren la necesidad de un seguimiento preventivo y terapéutico de la obesidad y los factores de riesgo modificables durante la transición menopáusica, para reducir el riesgo atribuible a dichos factores con el paso de los años.

  1. [Rethinking the surgical approach to intestinal obstruction surgery in neonates. Experience of a third-level hospital].

    PubMed

    Sepúlveda-Vildósola, Ana Carolina; Piedra Buena-Muñoz, Esmeralda; Partida-Justo, Irving; Campos-Lozada, Ileana

    2015-01-01

    Introducción: la elección de una incisión para laparotomía depende del área que necesite ser expuesta, la urgencia del procedimiento y las preferencias del cirujano. En el Hospital de Pediatría del Centro Médico Nacional Siglo XXI del IMSS, tradicionalmente se realiza abordaje por línea media en estos pacientes. Nuestro objetivo fue determinar si el abordaje por línea media es seguro para el manejo de neonatos sometidos a laparotomía por oclusión intestinal. Métodos: estudio retrospectivo que incluyó a todos los neonatos sometidos a laparotomía por oclusión intestinal mediante abordaje por línea media, en un período comprendido entre enero 2010 a enero 2012. Resultados: se estudiaron 34 pacientes. El 88.2 % de los procedimientos fueron de urgencia. Se encontraron complicaciones en 44 % de los pacientes, de las cuales la más frecuentes fueron: infección y dehiscencia de herida. Dentro de las complicaciones respiratorias, el 32.4 % presentó atelectasia y el 14.7 %, neumonía. Tuvieron hernia postincisional al año el 14.7 %. Ninguna de las variables del paciente o la cirugía fueron estadísticamente significativas para el desarrollo de complicaciones. Se presentaron más complicaciones en los procedimientos de urgencia, en pacientes menores a 2000 gramos y con tiempos quirúrgicos mayores a 120 minutos. Conclusiones: la frecuencia de complicaciones inmediatas y mediatas posteriores al evento quirúrgico son mayores a las reportadas en la literatura con abordaje transverso. La frecuencia de hernia postincisional al año es similar a lo reportado con éste último abordaje.

  2. [Risk factors and rejection frequency in patients undergoing penetrating keratoplasty].

    PubMed

    Gittins-Nuñez, Luis Othón; Díaz Del Castillo-Martín, Ernesto; Huerta-Albañil, Irma; Ríos-Prado, Rita; Soto-Dávila, Marco Antonio

    2016-01-01

    Introducción: el trasplante de córnea representa uno de los procedimientos quirúrgicos que con mayor frecuencia se realizan en todo el mundo y de los que tienen un mejor pronóstico. Dentro de sus principales indicaciones se encuentran: el queratocono, la queratopatía bullosa, el rechazo corneal previo, la distrofia corneal y la infección. Los factores de riesgo conocidos para rechazo del trasplante son: edad del receptor, presencia de vasos en la córnea receptora, presión intraocular y retrasplante. El objetivo de este artículo es determinar los factores de riesgo y la frecuencia de rechazo corneal en pacientes sometidos a queratoplastia penetrante. Métodos: el diseño del estudio fue descriptivo, observacional, transversal, retrospectivo y analítico. Se estudiaron los pacientes operados de queratoplastia penetrante en la consulta externa de córnea, con seguimiento mínimo de 6 meses. Se llevó a cabo una revisión de expedientes clínicos de pacientes operados de queratoplastia penetrante en Hospital de Especialidades del Centro Médico Nacional Siglo XXI del IMSS. Resultados: del total de los pacientes trasplantados 35.3 % presentaron rechazo del trasplante corneal. La neovascularización corneal previa al trasplante de la corona receptora estuvo presente en 21.3 %. Conclusiones: en nuestro estudio encontramos resultados similares a los reportados en la literatura, siendo los factores de riesgo más importantes para presentar rechazo: el uso de trépanos mayores a 7.50 mm, paciente con antecedentes de neovascularización corneal previa, queratopatía y queratitis herpética.

  3. [Acute silicosis. An infrequent pneumoconiosis].

    PubMed

    Méndez-Vargas, María Martha; Soto-de la Fuente, Andrés Eduardo; Soto-Vera, Eduardo Andrés; Leo-Méndez, Rodolfo

    2015-01-01

    Introducción: la silicosis aguda fue descrita inicialmente en 1900 por Betts. Se le denomina también silicoproteinosis alveolar. Es una forma infrecuente de neumoconiosis producida al utilizar chorro de arena (sandblast) para pulir. Caso clínico: masculino de 27 años, trabajó 4 años en un expendio de vidrios, esmerilándolos por medio de chorro de arena. Padecimiento de 4 años con disnea de esfuerzos rápidamente progresiva hasta mínimos esfuerzos, tos seca, emetizante y disneizante, con expectoración hialina 50 ml diarios, pérdida de 20 kg de peso en 1 año y dolor torácico generalizado de tipo pungitivo intenso. Frecuencia respiratoria 36X´ frecuencia cardiaca 120X´, estertores crepitantes basales bilaterales. En la telerradiografía de tórax se observa festón de Mengeaux en hemidiafragma derecho y en el vértice derecho, opacidades redondeadas entre 3 y 10 mm de diámetro tipo 2/2 r/r de la Clasificación de la OIT, 2000. En el pulmón izquierdo las opacidades confluyen formando un silicoma tipo B e imágenes en panal de abeja. Silueta cardiaca deshilachada y cardiomegalia grado 1. Fallece a los 5 años de iniciado su padecimiento. Conclusiones: se deben prohibir estas operaciones o aplicar programa de higiene industrial con uso de respirador autónomo.

  4. [Association of stress hyperglycemia and in-hospital complications].

    PubMed

    Galindo-García, Gerardo; Galván-Plata, María Eugenia; Nellen-Hummel, Haiko; Almeida-Gutiérrez, Eduardo

    2015-01-01

    Introducción: la hiperglucemia de estrés es la elevación de la glucosa sérica que se encuentra a la admisión hospitalaria de un paciente. El objetivo fue evaluar el impacto de la hiperglucemia de estrés al ingreso en el desenlace de pacientes no críticos hospitalizados en un servicio de Medicina Interna. Métodos: estudio de cohorte prospectivo y analítico realizado en pacientes de Medicina Interna del Hospital de Especialidades del Centro Médico Nacional Siglo XXI del Instituto Mexicano del Seguro Social, de septiembre de 2011 a febrero de 2012. Resultados: se incluyeron 89 pacientes con niveles séricos de glucosa < 110 mg/dL (grupo A) y 90 pacientes con niveles de glucosa > 110 mg/dL (grupo B). La diabetes mellitus fue más frecuente en el grupo B (p < 0.001). La hemoglobina glucosilada mayor a 6.5 % se encontró en el 36.4 % de los pacientes del grupo B y en el 8.7 % del grupo A, (p < 0.001). Los pacientes del grupo B tuvieron mayor puntuación en el APACHE II (p = 0.02) y tendencia a mayor frecuencia de complicaciones. Conclusiones: la hiperglucemia de estrés se asocia a una mayor puntuación de APACHE II, y tiende a una mayor frecuencia de enfermedad crítica, sepsis, infección de vías urinarias, neumonía y uso de aminas vasopresoras. Los predictores independientes de muerte fueron la presencia de hipertensión arterial y el score APACHE II.

  5. [RELATIONSHIP BETWEEN BODY MASS INDEX, PHYSICAL ACTIVITY AND MEAL TIMES IN MEXICAN ADOLESCENTS].

    PubMed

    Saucedo-Molina, Teresita de Jesùs; Rodríguez Jiménez, Juana; Oliva Macías, Luz Alejandra; Villarreal Castillo, Martín; León Hernández, Rodrigo César; Fernández Cortés, Trinidad Lorena

    2015-09-01

    Objetivos: los objetivos de este estudio son: 1) describir la distribución del IMC, los niveles de actividad física y la frecuencia de los tiempos de comida, y 2) examinar la relación de estas variables con el IMC en una muestra de adolescentes mexicanos estudiantes de preparatoria. Métodos: participaron 1.028 adolescentes (58,9% mujeres y 41,1% hombres) de 15 a 19 años de edad (M= 16,12; DE= 0,9). Se calculó el IMC y se utilizó la referencia del CDC-2000. Los tiempos de comida se midieron con uno de los factores del cuestionario Factores de Riesgo Asociados a Trastornos Alimentarios para Púberes (FRATAP). La actividad física se evaluó mediante el International Physical Activity Questionnaire (IPAQ) en su versión corta. Se realizaron correlaciones de Pearson para ver la relación entre las variables. Resultados: la prevalencia combinada de sobrepeso y obesidad alcanzó el 29,2% para mujeres y el 29,3% en hombres. En el factor tiempos de comida, los sujetos con desnutrición y bajo peso fueron quienes siempre obtuvieron los valores más altos en la opción de respuesta. El 31,9% del total de la muestra reportó un nivel de actividad física bajo. Los tiempos de comida mostraron asociaciones significativas con el IMC (r= -0,142, p < 0,01) y los niveles de actividad física (r= 0,125, p < 0,01). Discusión: en la muestra se identificaron problemas importantes de malnutrición, frecuencia de comidas e inactividad física. De estos hallazgos surge la necesidad de diseñar e implantar programas para promover estilos de vida saludables en adolescentes.

  6. [Learning disorders in neurofibromatosis type 1].

    PubMed

    Garcia-Penas, J J

    2017-02-24

    Introduccion. Los deficits neurocognitivos y las dificultades de aprendizaje representan las complicaciones neurologicas mas frecuentes de la neurofibromatosis tipo 1 (NF1) en la edad pediatrica y son responsables de una importante morbilidad evolutiva. Los niños con NF1 muestran alteraciones en atencion, percepcion visual, lenguaje, funciones ejecutivas, logros academicos y conducta. Los estudios en modelos animales sugieren que las alteraciones de aprendizaje en la NF1 se relacionan con una potenciacion de la actividad Ras que conduce a un incremento de la inhibicion mediada por el acido gamma-aminobutirico (GABA) y a una disminucion de la potenciacion sinaptica a largo plazo. Objetivo. Describir la frecuencia, gravedad, tipologia y evolucion natural de los deficits neurocognitivos especificos de la NF1. Desarrollo. Los trastornos neurocognitivos y conductuales afectan al 50-80% de los niños con NF1. Se pueden definir tres subtipos de perfiles cognitivos en la NF1, incluyendo trastorno de aprendizaje global, trastorno especifico de aprendizaje y trastorno por deficit de atencion/hiperactividad aislado. Los deficits cognitivos mas frecuentes se relacionan con la alteracion visuoespacial, aunque tambien son importantes las alteraciones de la memoria de trabajo y de la funcion ejecutiva asociadas con la disfuncion de la corteza prefrontal. Conclusiones. Existe una gran frecuencia global de problemas cognitivos en la NF1, lo cual implica que la disfuncion neurocognitiva sea la mayor complicacion medica que afecta la calidad de vida de estos pacientes. El diagnostico y el tratamiento precoces de los trastornos de aprendizaje en estos niños son basicos para conseguir un mejor desempeño academico.

  7. [Neurological complications in the population of children with leukaemia].

    PubMed

    Martínez-Cayuelas, Elena; Domingo-Jiménez, Rosario; Pascual-Gázquez, Juan F; Martínez-Salcedo, Eduardo; Alarcón-Martínez, Helena; Bermúdez-Cortés, Mar; Fuster-Soler, José L; Pérez-Fernández, Virginia

    2015-02-01

    Introduccion. La leucemia es el cancer mas frecuente en edad pediatrica. Su tasa de curacion es del 80% con quimioterapia intensiva, que mejora la supervivencia, pero que tambien aumenta la frecuencia de efectos adversos, incluyendo los neurologicos. Objetivos. Describir la frecuencia y caracteristicas de las complicaciones neurologicas (CN) en pacientes con leucemia aguda linfoide (LAL) y leucemia aguda mieloide (LAM), e identificar los factores asociados a su presencia, la tasa de morbilidad neurologica y la supervivencia. Pacientes y metodos. Estudio retrospectivo de las CN presentes durante el tratamiento y seguimiento de los pacientes con LAL y LAM entre 1997 y 2012 por la unidad de oncohematologia infantil. Variables analizadas: datos demograficos, diagnostico oncologico, tratamiento y CN. Resultados. Se incluyo un total de 157 pacientes, 145 sin infiltracion de sistema nervioso central al diagnostico y ocho con infiltracion (tasa de CN del 14 y 12%, respectivamente). Las CN mas frecuentes fueron: neuropatias (31%), alteracion del nivel de conciencia (27%), convulsiones (22%) y cefalea (12%). Un 40% de los pacientes con CN ha presentado secuelas, pero ninguno ha fallecido como consecuencia de la CN. Se han detectado mas CN en el grupo de edad menor de 6 años con LAL de alto grado, en niveles de gravedad mas altos y en pacientes que habian recibido trasplante de precursores hematopoyeticos, todas ellas con diferencias estadisticamente significativas. Conclusiones. Las complicaciones neurologicas son frecuentes en los pacientes con leucemia aguda, en especial en aquellos con estadio de riesgo alto (sobre todo si son menores de 6 años) y trasplante de precursores hematopoyeticos. La mortalidad asociada es baja.

  8. [Relationship between body fat and creatinine clearence in adults with and without diabetes mellitus].

    PubMed

    Romero-Campos, Sandra; Viveros-Cortés, Ángel; Medina-Escobedo, Martha; Sansores-España, Delia; Villanueva-Jorge, Salha

    2015-01-01

    Introducción: la obesidad es un factor de riesgo para daño renal. El objetivo del estudio fue conocer la relación entre el porcentaje de grasa corporal (PG) y la depuración de creatinina en pacientes adultos con y sin diabetes mellitus 2 (DM2). Métodos: estudio observacional, prospectivo, transversal de correlación. Se evaluaron adultos entre 18 y 60 años, con y sin DM2. Se determinó el tiempo de evolución con DM2, el PG, el índice de masa corporal (IMC), la depuración de creatinina (Cockroft-Gault [DCrCG]), la glicemia y la micro/macroalbuminuria. Mediante la prueba de Spearman se determinó la correlación entre DCrCG y PG. Resultados: se incluyeron 174 sujetos. La frecuencia de obesidad por IMC y PG en sujetos con y sin DM2 fue similar. El 12.6 % no tuvo daño renal y el 50.7 % tuvo riesgo aumentado de enfermedad renal. Las frecuencias para los estadios 1 a 4 fueron 12.0, 20.1, 4.0 y 0.6 %, de forma respectiva. La prueba de Spearman mostró relación directa entre PG y DCrCG, mayor en diabéticos (r = 0.418 frente a r = 0.327, p < 0.0001). Conclusiones: el PG corporal se correlacionó en forma directa con la DCrCG en sujetos con y sin DM2; se infiere que a mayor daño renal, menor grasa tiene la población evaluada.

  9. [Correlation of heart rate variability with SYNTAX II on chronic angina].

    PubMed

    Castro-de la Torre, Tatiana Chantal; Amador-Licona, Norma; Bernal-Ruíz, Enrique

    2017-01-01

    Introducción: la variabilidad de la frecuencia cardiaca (VFC) es un valor pronóstico de riesgo cardiovascular. Se desconoce su correlación con la severidad de la cardiopatía isquémica estable. El objetivo fue conocer la correlación de la VFC con la puntuación SYNTAX II en angina crónica. Métodos: estudio transversal en pacientes mayores de 18 años con angina estable e indicación de coronariografía diagnóstica que asistieron a un centro de tercer nivel. Mediante coronariografía se estableció la puntuación SYNTAX II y se obtuvo la VFC por Holter de 24 horas. La correlación de las mediciones se obtuvo con la prueba de Pearson. Un valor de SDNN < 100 ms y de RMSSD < 15 ms se consideró de riesgo. Resultados: se incluyeron 61 pacientes. De ellos, 45 tenían disminución de los valores de SDNN (73.77%) y solo 8 tenían disminución de los valores RMSSD (13.11%). No hubo correlación de ningún parámetro de VFC con SYNTAX II. Hubo mayor frecuencia de taquicardia ventricular en el grupo SDNN bajo en comparación con SDNN normal (15.5 frente a 0.0%; p = 0.04). Conclusiones: no identificamos correlación de parámetros de VFC con la severidad de cardiopatía isquémica crónica. Sin embargo, aquellos pacientes con menor VFC presentaron mayor proporción de taquicardia ventricular.

  10. The understanding, attitude and use of nutrition label among consumers (China).

    PubMed

    Song, Jiangen; Huang, Junxia; Chen, Yujuan; Zhu, Yu; Li, Haibo; Wen, Yufeng; Yuan, Hui; Liang, Yali

    2015-06-01

    Objetivo: el objetivo de este estudio fue investigar el conocimiento, la actitud y el uso de la etiqueta nutricional entre los consumidores en China. Métodos: estudio transversal con un cuestionario estructurado que fue realizada entre 1.153 consumidores, que fueron reclutados a partir de diferentes supermercados durante marzo a mayo de 2014 en la ciudad de Wuhu de China. Resultados: el resultado muestra que la comprensión subjetiva de las etiquetas nutricionales fue moderada (el 62,8% de los encuestados), pero el objetivo entendimiento fue variado. Las actitudes hacia la etiqueta nutricional fueron positivas en aquellos participantes con mayor confianza y satisfacción en las mismas. Respecto a la lectura de las etiquetas, el 59,2 % de los encuestados contestó que “a veces” y el 28,7 % que “siempre”. La lectura de la etiqueta nutricional de alimentos que con mayor frecuencia se realizó fue la de la leche (57,5%), seguida por la alimentación infantil (33,3%), proteínas y nutrientes (51,5%), vitaminas (49,8%) y grasas (29,4%). Ninguna de las características demográficas se asoció con el conocimiento, la actitud y el uso de la etiqueta nutricional, excepto la educación. Conclusiones: Las personas que participaron en nuestro estudio tenían una comprensión moderada, mostrando una actitud más positiva aquellos que la utilizan con más frecuencia. Aunque la etiqueta nutricional se convirtió en obligatoria, aún son necesarias estrategias adicionales, así como fomentar su conocimiento por parte de los consumidores.

  11. The use of flaxseed flour during pregnancy and lactation reverses lower birth weight in offspring from diabetic mothers but averts the development during lactation.

    PubMed

    Correia-Santos, André Manoel; Vicente, Gabriela Câmara; Suzuki, Akemi; Pereira, Aline D'Ávila; dos Anjos, Juliana Saraiva; de Almeida, Kátia Calvi Lenzi; Boaventura, Gilson Teles

    2014-10-01

    La diabetes es una complicación que ocurre durante la gestación puede influir sustancialmente el desarrollo de las crías durante la vida fetal y postnatal. La linaza es una fuente de ácidos grasos omega-3, que la oferta apropiado durante la gestación y lactancia son determinantes para un adecuados crecimiento y desarrollo perinatal. Este estudio tuvo como objetivo evaluar los efectos beneficiosos del uso de la harina de linaza durante el embarazo y la lactancia en el desarrollo corporal desde el nacimiento hasta el destete de las crías de madres diabéticas. Métodos: Los doce ratas, de un total de dieciocho fueron inducidas a la diabetes con dieta alta en grasas durante cuatro semanas también recibir una dosis reducida de estreptozotocina. Después de la confirmación de la diabetes (glucosa> 300mg/dL), que fueron apareadas y cuando se confirmó el embarazo, fueron divididos en 3 grupos: grupo de alto contenido de grasa (HFG), grupo de alto contenido de grasa con harina de linaza (HFFFG) y grupo control (GC ), recibiendo la dieta alta en grasas, dieta alta en grasa añadida harina de linaza y dieta control, respectivamente. Fueron alimentados de esta manera durante toda la gestación y la lactancia. El el desarrollo corporal de las crías se midió semanalmente desde el primer día después de su nacimiento hasta el destete. Resultados: En el nacimiento, la masa corporal medio de las crías de madres diabéticas que recibieron sólo la dieta rica en grasas era 23,6% más ligero que la masa corporal de las crías de los no diabéticos madres (p.

  12. [Mental health indicators and their association with smoking in Guadalajara teenagers by sex].

    PubMed

    Nuño-Gutiérrez, Bertha Lidia; Celis-de la Rosa, Alfredo; García-Pérez, Olga Patricia

    2015-01-01

    Introducción: el objetivo de este estudio fue evaluar la fuerza de asociación entre indicadores de salud mental con el tabaquismo actual en adolescentes según su sexo. Métodos: se incluyeron 1134 estudiantes de primer año de una preparatoria pública. Se evaluaron diez indicadores de salud mental mediante escalas validadas: autoestima, impulsividad, síntomas depresivos, ideación suicida, conductas alimentarias de riesgo, recreación, locus de control, relación con padre/madre y estrés psicosocial. Resultados: encontramos diferentes indicadores asociados al tabaquismo en hombres y mujeres. En el análisis de riesgo crudo los indicadores para los hombres fueron: alta autoestima, impulsividad, tener 16-17 años de edad y tabaquismo en amigos. En mujeres: ideación suicida, impulsividad, conductas alimentarias de riesgo, tener 17 años, tabaquismo en amigos y hermanos. Después de la regresión logística, en ambos grupos hubo asociación entre impulsividad y tabaquismo en amigos. Además en hombres se encontró: alta autoestima y tener 16-17 años de edad, mientras que en mujeres: tabaquismo en hermanos. Conclusiones: los indicadores de salud mental asociados al tabaquismo actual fueron diferentes para hombres y mujeres. En los hombres: alta autoestima, impulsividad, edad y tabaquismo en amigos. En las mujeres: impulsividad, tabaquismo en amigos y hermanos.

  13. The Elmslie-Trillat procedure for recurrent subluxation of the patella. One to five year follow-up.

    PubMed

    Conti, C; Berruto, M; Bianchi, M

    1992-01-01

    Thirty-four patients who had undergone the Elmslie-Trillat procedure from 1985 to 1989 were examined in order to evaluate the effectiveness of this operation in the treatment of recurrent subluxation of the patella. The result of an increased Q angle accompanied by patella alta, femoral sulcus dysplasia, or vastus medialus obliquus dysplasia was also studied. Only those patients with recurrent subluxation of the patella took part in this study; cases of habitual or permanent dislocation, potential instability, traumatic dislocation, and degenerative arthritis were excluded. The patients were reviewed both clinically and radiographically, and the A.R.P.E.G.E. scoring system was used to evaluate the results. The follow-up period ranged from 1 year to 5 years and 4 months, with an average of 3 years. The overall results were excellent or good in 77% of the cases, as was the subjective knee stability rating in 87% of the cases and the pain rating in 82% of the cases. Recurrence of the subluxation was observed in only one instance. The results were not significantly different when the groups of patients with patella alta and type 1 femoral sulcus dysplasia were considered separately. The results were also excellent in the patients who underwent the Elmslie-Trillat procedure with reconstruction of the vastus medialis obliquus. In conclusion, surgical realignment of the anterior tibial tubercle confirmed its reliability in the treatment of recurrent subluxation of the patella. In cases of patella alta, the authors recommend lowering the anterior tibial tubercle only when the Insall-Burstein index is greater than 1.3. Femoral sulcus-plasty should be performed in cases of type 3 sulcus dysplasia.

  14. [Study of death with secondary diagnosis of malnutrition in a third level hospital].

    PubMed

    Fernández Valdivia, Antonia; Lobo Támer, Gabriela; Martínez Cirre, Ma Carmen; Valero Aguilera, Beatriz; Peña Taveras, Manuel del Carmen; Rodríguez Rodríguez, José María; Martínez Tapias, Jesús; Pérez de la Cruz, Antonio Jesús

    2013-01-01

    Introducción: La desnutrición constituye uno de los principales problemas de Salud Pública, según datos de la OMS, es la primera causa de mortalidad, cuando la misma afecta al colectivo de los sujetos hospitalizados, toma entidad propia denominándose “desnutrición hospitalaria”. Objetivos: El objetivo general es cuantificar los diagnósticos principales de alta más frecuentes, que causan exitus, con el diagnóstico secundario de desnutrición. Métodos: Se trata de un estudio transversal y descriptivo, en el que se han incluido todas las altas hospitalarias del año 2011 y primer semestre de 2012, que han sido exitus y que tienen como diagnóstico secundario la desnutrición, siendo el total de 33. Se ha realizado un análisis estadístico descriptivo, efectuándose el test de Mann-Whitney para pruebas no paramétricas (p < 0,05). Resultados: Los diagnósticos principales más frecuentes entre las 33 altas analizadas son la sepsis (12,1%), metástasis hepáticas (9,1%), neumonía (6,1%), insuficiencia respiratoria aguda (6,1%) e insuficiencia renal aguda (6,1%). Conclusiones: Aunque el diagnóstico principal más frecuente es la sepsis, al agrupar los diagnósticos, el GRD más frecuente es de patología respiratoria, por lo que se ha de hacer codificación exhaustiva y de calidad para ajustar el peso relativo de los mismos a la realidad. Es fundamental especificar en la fuente de información clínica utilizada para la codificación, el grado de desnutrición, para obtener mayor especificidad en los datos.

  15. Cyclone Boiler Field Testing of Advanced Layered NOx Control Technology in Sioux Unit 1

    SciTech Connect

    Marc A. Cremer; Bradley R. Adams

    2006-06-30

    A four week testing program was completed during this project to assess the ability of the combination of deep staging, Rich Reagent Injection (RRI), and Selective Non-Catalytic Reduction (SNCR) to reduce NOx emissions below 0.15 lb/MBtu in a cyclone fired boiler. The host site for the tests was AmerenUE's Sioux Unit 1, a 500 MW cyclone fired boiler located near St. Louis, MO. Reaction Engineering International (REI) led the project team including AmerenUE, FuelTech Inc., and the Electric Power Research Institute (EPRI). This layered approach to NOx reduction is termed the Advanced Layered Technology Approach (ALTA). Installed RRI and SNCR port locations were guided by computational fluid dynamics (CFD) based modeling conducted by REI. During the parametric testing, NOx emissions of 0.12 lb/MBtu were achieved consistently from overfire air (OFA)-only baseline NOx emissions of 0.25 lb/MBtu or less, when firing the typical 80/20 fuel blend of Powder River Basin (PRB) and Illinois No.6 coals. From OFA-only baseline levels of 0.20 lb/MBtu, NOx emissions of 0.12 lb/MBtu were also achieved, but at significantly reduced urea flow rates. Under the deeply staged conditions that were tested, RRI performance was observed to degrade as higher blends of Illinois No.6 were used. NOx emissions achieved with ALTA while firing a 60/40 blend were approximately 0.15 lb/MBtu. NOx emissions while firing 100% Illinois No.6 were approximately 0.165 lb/MBtu. Based on the performance results of these tests, economics analyses of the application of ALTA to a nominal 500 MW cyclone unit show that the levelized cost to achieve 0.15 lb/MBtu is well below 75% of the cost of a state of the art SCR.

  16. Plants, people and traditions: ethnobotanical survey in the Lombard Stelvio National Park and neighbouring areas (Central Alps, Italy).

    PubMed

    Vitalini, Sara; Puricelli, Cristina; Mikerezi, Ilia; Iriti, Marcello

    2015-09-15

    The value of ethnobotanical information is now increasingly acknowledged. Our investigation added new data to the traditional knowledge on the plant uses in Italian alpine areas, where only in recent years the awareness of losing such valuable heritage stimulated interest of the scientific community and land managers in its recovery and enhancement. To this end, the present study aimed to collect and analyse information on plant species employed in Northern Italy (Lombardy Region), particularly in Alta Valtellina, an area of high naturalistic interest, where ethnobotanical knowledge is at the risk of passing covering a secondary role compared to other aspects of the local culture. A total of 328 people from six municipalities were interviewed using semi-structured questionnaires. Data were evaluated by quantitative parameters such as ethnobotanicity and ethnophytonomic indices, factor informant consensus (Fic), fidelity level (Fl). Abandoned and current uses were compared. Herbarium materials were prepared and conserved. Inhabitants of Alta Valtellina used 212 plant species, including 19 mushrooms and 1 lichen for medicinal, food and cosmetic purposes. Despite half of medicinal uses has fallen into disuse, the plant species of this category were still collected in largest number. Digestive, respiratory and skin systems were the most frequently treated. Fic and Fl values, in addition to simple percentage data confirmed this finding. Although 40% of the known uses is now abandoned, a considerable number of them was recorded for the first time in an alpine area. The study revealed that the popular knowledge of plant species is still alive in the Alta Valtellina. The prerogatives of some species are now outdated, but they leave room for other uses of the plant resources that may provide new opportunities from the scientific, cultural and economic points of view. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  17. Quality of anaesthesia-related information accessed via Internet searches.

    PubMed

    Caron, S; Berton, J; Beydon, L

    2007-08-01

    We conducted a study to examine the quality and stability of information available from the Internet on four anaesthesia-related topics. In January 2006, we searched using four key words (porphyria, scleroderma, transfusion risk, and epidural analgesia risk) with five search engines (Google, HotBot, AltaVista, Excite, and Yahoo). We used a published scoring system (NetScoring) to evaluate the first 15 sites identified by each of these 20 searches. We also used a simple four-point scale to assess the first 100 sites in the Google search on one of our four topics ('epidural analgesia risk'). In November 2006, we conducted a second evaluation, using three search engines (Google, AltaVista, and Yahoo) with 14 synonyms for 'epidural analgesia risk'. The five search engines performed similarly. NetScoring scores were lower for transfusion risk (P < 0.001). One or more high-quality sites was identified consistently among the first 15 sites in each search. Quality scored using the simple scale correlated closely with medical content and design by NetScoring and with the number of references (P < 0.05). Synonyms of 'epidural analgesia risk' yielded similar results. The quality of accessed information improved somewhat over the 11 month period with Yahoo and AltaVista, but declined with Google. The Internet is a valuable tool for obtaining medical information, but the quality of websites varies between different topics. A simple rating scale may facilitate the quality scoring on individual websites. Differences in precise search terms used for a given topic did not appear to affect the quality of the information obtained.

  18. Planning, construction and testing of a cogeneration system for swimming pool and space heating. Final report

    SciTech Connect

    Balding, M.R.

    1983-01-01

    In the first four months of operation the cogeneration system for Alta Loma High School not only proved to be a reliable workhorse but managed to maintain a 70% efficiency in the use of natural gas, the engine fuel. In the first 1400 hours of operation 90,000 kilowatt hours of electricity were generated and nearly 5 million Btu's of heat put into the school's swimming pools and heating system. In July 1982 the engine was installed and tested for heat and electrical output. In September the engine was started for the school year and has been working on a daily basis since then. The information gained in 2000 hours of use indicates that cogeneration is far more than just practical; it is a necessity. The basic plan to cut the cost of energy in half, by using both heat and electricity from the same source, has worked in an impressive way. The system for Alta Loma was designed to meet the heating needs of two swimming pools during the coldest part of the winter, with covers in use at night. Cogeneration is most practical when all the heat can be used all the time. For this reason the Alta Loma plant was also designed to provide heat for P.E. showers and space heating needs, when the pools do not need all the available heat. It was determined that an engine driving a 75 kilowatt generator would best suit the heating need for the pools. Since all the electricity was to be used in campus, or sent into the Edison grid, the size of the unit was based primarily on heating needs.

  19. Ventos em supergigantes B[e] das nuvens de Magalhães e da Galáxia

    NASA Astrophysics Data System (ADS)

    de Araújo, F. X.; Pilling, D. A.; Pereira, C. B.; Fernandes, M. B.

    2003-08-01

    As Supergigantes B[e] apresentam as seguintes características: (i) alta luminosidade; (ii) espectro típico de estrelas de tipo B; (iii) linhas permitidas e proibidas em emissão de metais de baixa ionização, especialmente FeII; (iv) linhas de Balmer, e por vêzes também dos ions HeI e FeII, com perfis tipo P Cygni indicativos de altas taxas de perda de massa. Atualmente estamos desenvolvendo um projeto que visa comparar as propriedades fisicas (principalmente e v¥) dos ventos destes objetos nas Nuvens de Magalhães e na Galaxia. O objetivo é estudar a influência da metalicidade. No presente painel apresentamos uma determinação das velocidades terminais de 11 estrelas, sendo 4 na GNM (Hen S111, 66, R126 e Hen S93), 4 na PNM (Hen S18, S23, S65 e R4) e 3 na Galaxia (CPD-529243, MWC 300 e GG Car). Nossos dados são espectros de alta resolução obtidos no telescópio 1.52m do ESO com o espectrógrafo FEROS. Para determinar as velocidades terminais usamos as linhas Hd e HeI 3888 Å cujas componentes em absorção costumam estar livres de "blends" e estruturas. Nossos resultados sugerem que as velocidades de expansão na GNM são maiores (ainda que apenas ligeiramente) do que aquelas da PNM, como esperado. No entanto, os objetos da Galaxia não parecem seguir a mesma tendência.

  20. Position of the patella in adults in central India: evaluation of the Insall-Salvati ratio.

    PubMed

    Upadhyay, Sachin; Raza, H K T; Srivastava, Pranay

    2013-04-01

    To assess the Insall-Salvati ratio in normal Indian adults to determine its applicability and the incidence of patella alta and baja in Indian populations. 800 knees in 200 men and 200 women aged 18 to 50 (mean, 30) years were evaluated using lateral radiographs. The knee was set in semi-flexion (30º) to enable good visualisation of the patellar tendon and its insertion into the tibia on radiographs. The length of the patellar tendon (LT) over the length of the patella (LP)-the Insall-Salvati ratio-was measured, using a vernier caliper. The mean LT/LP ratio was 1.14 (standard deviation, 0.18). Based on the 95% confidence interval, the ratio was considered normal if within ±40%. The LT/LP ratio was significantly higher in females than males (1.17 vs. 1.12, p<0.01). The cut-off point of patella alta was significantly greater in our Indian subjects than in western subjects (>1.5 vs. >1.2, p<0.0001). In the present cohort, the frequencies of patella alta (ratio, >1.5) and patella baja (ratio, <0.7) were 2.8% and 1%, respectively. The use of the Insall-Salvati ratio to determine the patellar position is less applicable to Indian populations in which squatting, sitting cross-legged, and kneeling are customs. We propose that the normal range of the ratio for squatters among Indian populations be 0.7 to 1.5.

  1. [In Process Citation].

    PubMed

    Giménez Sánchez, Jaume; Fleta Sánchez, Yolanda; Meya Molina, Alba

    2016-02-16

    Introducción: debido a la alta prevalencia de sobrepeso y obesidad se hacen necesarias nuevas estrategias para su prevención y tratamiento. El coaching nutricional (CN) ha emergido en los últimos años y ha demostrado ser efectivo para la pérdida de peso aunque, al ser un concepto innovador, no siempre se utiliza apropiadamente.Objetivo: verificar si el CN, junto con el asesoramiento técnico, es una estrategia efectiva para la disminución de peso en población con sobrepeso u obesidad en comparación con el asesoramiento nutricional por sí solo.Material y métodos: se revisó la bibliografía referente a CN para determinar los parámetros de calidad en cuanto a esta intervención. Se realizó una búsqueda de estudios controlados aleatorizados que aplicaran CN según los parámetros seleccionados y lo compararan con asesoramiento técnico nutricional.Resultados: se analizaron ocho estudios con alta calidad en la intervención de coaching y calidad metodológica media o alta. Seis de ellos indicaron diferencias significativas a favor del grupo que recibió CN.Conclusión: el CN es una estrategia efectiva para bajar de peso. Se necesitan más investigaciones con una definición clara de la metodología utilizada para aportar solidez a este nuevo enfoque.

  2. Parâmetros astrofísicos de estrelas gigantes do aglomerado globular 47 Tucanae

    NASA Astrophysics Data System (ADS)

    Alves-Brito, A.; Barbuy, B.

    2003-08-01

    Os aglomerados globulares são considerados laboratórios astrofísicos para a verificação da teoria de evolução estelar, bem como a trajetória químio-dinâmica das galáxias hospedeiras. Em particular, 47 Tucanae (NGC 104) configura-se como um dos mais extensivamente estudados aglomerados globulares da Galáxia devido a relativa proximidade ao Sol (R¤ = 4.5 kpc) e alta latitute galáctica (b = -44°,89). Neste trabalho, apresentamos a velocidade radial heliocêntrica e os parâmetros atmosféricos (Teff, logg, [Fe/H]) de 5 estrelas gigantes do aglomerado globular 47 Tucanae. Os espectros foram obtidos pelo espectrógrafo UVES (Ultaviolet Visual Echelle Spectrograph) de alta resolução (R = 60000) e alta razão sinal-ruído (S/N > 200), acoplado ao telescópio de 8,2m Kueyen do VLT (Very Large Telescope). Nós encontramos = -22,43 +/- 3,97 km/s, [Fe/H] ~ -0.7, 1,2 < logg < 2,2 e 4100 < Teff < 4570 para a nossa amostra. As estrelas cobrem um intervalo de magnitude 12,2 < V < 14,2. Os parâmetros atmosféricos são fundamentais para a construção de espectros sintéticos de outros aglomerados globulares ricos em metais. Trabalho financiado pela FAPESP e pelo CNPq.

  3. Migratory behaviour and survival rates of wild northern Atlantic salmon Salmo salar post-smolts: Effects of environmental factors

    USGS Publications Warehouse

    Davidsen, J.G.; Rikardsen, A.H.; Halttunen, E.; Thorstad, E.B.; Okland, F.; Letcher, B.H.; Skarhamar, J.; Naesje, T.F.

    2009-01-01

    To study smolt behaviour and survival of a northern Atlantic salmon Salmo salar population during river descent, sea entry and fjord migration, 120 wild S. salar were tagged with acoustic tags and registered at four automatic listening station arrays in the mouth of the north Norwegian River Alta and throughout the Alta Fjord. An estimated 75% of the post-smolts survived from the river mouth, through the estuary and the first 17 km of the fjord. Survival rates in the fjord varied with fork length (LF), and ranged from 97??0 to 99??5% km-1. On average, the post-smolts spent 1??5 days (36 h, range 11-365 h) travelling from the river mouth to the last fjord array, 31 km from the river mouth. The migratory speed was slower (1??8 LF s-1) in the first 4 km after sea entry compared with the next 27 km (3??0 LF s-1). Post-smolts entered the fjord more often during the high or ebbing tide (70%). There was no clear diurnal migration pattern within the river and fjord, but most of the post-smolts entered the fjord at night (66%, 2000-0800 hours), despite the 24 h daylight at this latitude. The tidal cycle, wind-induced currents and the smolts' own movements seemed to influence migratory speeds and routes in different parts of the fjord. A large variation in migration patterns, both in the river and fjord, might indicate that individuals in stochastic estuarine and marine environments are exposed to highly variable selection regimes, resulting in different responses to environmental factors on both temporal and spatial scales. Post-smolts in the northern Alta Fjord had similar early marine survival rates to those observed previously in southern fjords; however, fjord residency in the north was shorter. ?? 2009 The Fisheries Society of the British Isles.

  4. Patellar Articular Overlap on MRI Is a Simple Alternative to Conventional Measurements of Patellar Height.

    PubMed

    Munch, Jacqueline L; Sullivan, Jaron P; Nguyen, Joseph T; Mintz, Douglas; Green, Daniel W; Shubin Stein, Beth E; Strickland, Sabrina

    2016-07-01

    Patella alta describes an abnormally high-riding patella in relationship to the femur and has been shown to correlate with patellofemoral pain, instability, chondromalacia, and arthrosis. Conventional measurements of patella alta involve multiple measurements and are often not defined on cross-sectional imaging as related to radiographs. Patellar articular overlap on sagittal magnetic resonance imaging (MRI) will correlate well with conventional measurements of patella alta as measured by a standardized technique defined by our group. Cohort study (diagnosis); Level of evidence, 2. MRIs of 239 knees were reviewed by 3 attending surgeons with practices focusing on patellofemoral disease, as well as 2 sports medicine fellows and 1 musculoskeletal radiologist. Measurements included articular overlap, percentage of articular coverage, Caton-Deschamps index, Blackburne-Peel index, and modified Insall-Salvati index. Interrater reliability was high for Caton-Deschamps, Blackburne-Peel, and modified Insall-Salvati indices (intraclass correlation coefficient [ICC], 0.877, 0.828, and 0.787, respectively). Articular overlap and percentage articular coverage correlated well with each other (ICC, 0.961; P < .001) and with the Caton-Deschamps (overlap r = -0.271, P < .001; coverage r = -0.131, P = .037) and Blackburne-Peel (overlap r = 0.343, P < .001; coverage r = -0.238, P < .001) indices. Articular overlap and percentage coverage failed to correlate with the modified Insall-Salvati index (overlap r = -0.117, P = .091; coverage r = 0.007, P = .918). Patellar articular overlap and percentage of patellar articular coverage show promise as a simpler alternative to conventional, ratio-based measurements of patellar height. Future studies are needed to evaluate the range of normal and the relationship to our traditionally used measurements.

  5. Does patella lowering improve crouch gait in cerebral palsy? Comparative retrospective study.

    PubMed

    Desailly, E; Thévenin-Lemoine, C; Khouri, N

    2017-09-01

    Patella lowering aims to improve quadriceps function as a means of correcting crouch gait in patients with cerebral palsy. Few studies have assessed the effects of patella lowering as a component of multilevel surgery. Including patella lowering into the components of multilevel surgery is beneficial in patients with crouch gait and patella alta. In 12 lower limbs with patella alta (Caton-Deschamps index>1.4) in 41 children with cerebral palsy, patella lowering was performed, without distal femoral extension osteotomy or hamstring release. Among limbs with similar surgical procedures (e.g., hamstring lengthening, rectus femoris transfer) except for patella lowering, controls were selected retrospectively by matching on a propensity score for patella lowering. The propensity score was computed based on preoperative knee flexion contracture, knee extension lag, and minimum knee flexion at mid-stance. Clinical and 3D kinematic data were compared between the two groups. The improvement in minimum knee flexion at mid-stance was significantly greater in the group with patellar lowering (-24°±12°vs. -12°±7°). The Gait Deviation Index improved similarly in the two groups. Knee flexion contracture improved only in the group with patellar lowering. Extension lag did not improve in either group. Peak knee flexion during the swing phase remained unchanged in both groups. Patellar lowering is effective in diminishing minimum knee flexion at mid-stance in patients with patella alta and crouch gait due to cerebral palsy. Patellar lowering has not adverse effects on gait. These findings cannot be assumed to apply to patients with normal patellar height. IV (retrospective study). Copyright © 2017. Published by Elsevier Masson SAS.

  6. Comparison of Insall-Salvati ratios in children with an acute anterior cruciate ligament tear and a matched control population.

    PubMed

    Degnan, Andrew Joseph; Maldjian, Catherine; Adam, Richard J; Fu, Freddie H; Di Domenica, Marica; Didomenico, Marica

    2015-01-01

    An anterior cruciate ligament (ACL) injury is an increasingly recognized cause of knee pain in young patients and in athletes in particular and can be detected non-invasively with MRI. Anecdotal information suggests that patella alta may be more common in the setting of this injury, but no study has documented this phenomenon. This study sought to test whether an ACL tear is associated with an increased Insall-Salvati ratio suggestive of patella alta. Measurements of patellar height, patellar tendon length, and the Insall-Salvati ratio obtained from MRI of the knee were compared for 34 children with an arthroscopically proven ACL tear (mean age ± SD, 12.4 ± 1.4 years) and 36 control subjects with normal knee examinations (12.8 ± 2.1 years); these measurements were performed independently by two observers. Patellar tendon length (47.6 ± 6.6 mm vs 40.4 ± 5.7 mm) and patellar position calculated as the Insall-Salvati ratio (1.16 ± 0.16 vs 0.99 ± 0.14) were significantly greater in the knees with an ACL injury than in those without an internal injury, respectively, on MRI (p < 0.001). Patella length was not significantly different between the two groups (patients vs control subjects, 41.1 ± 4.2 mm vs 40.6 ± 2.7 mm, respectively; p = 0.523). There was good to excellent interobserver and intraobserver correlation for all measurements. There is a significant association between an ACL tear and increased patellar tendon length with a greater Insall-Salvati ratio. The mechanism for this finding is unclear, but this association provides support to suggest relative patella alta may be a risk factor for ACL injuries in pediatric patients.

  7. Patellar Articular Overlap on MRI Is a Simple Alternative to Conventional Measurements of Patellar Height

    PubMed Central

    Munch, Jacqueline L.; Sullivan, Jaron P.; Nguyen, Joseph T.; Mintz, Douglas; Green, Daniel W.; Shubin Stein, Beth E.; Strickland, Sabrina

    2016-01-01

    Background: Patella alta describes an abnormally high-riding patella in relationship to the femur and has been shown to correlate with patellofemoral pain, instability, chondromalacia, and arthrosis. Conventional measurements of patella alta involve multiple measurements and are often not defined on cross-sectional imaging as related to radiographs. Hypothesis: Patellar articular overlap on sagittal magnetic resonance imaging (MRI) will correlate well with conventional measurements of patella alta as measured by a standardized technique defined by our group. Study Design: Cohort study (diagnosis); Level of evidence, 2. Methods: MRIs of 239 knees were reviewed by 3 attending surgeons with practices focusing on patellofemoral disease, as well as 2 sports medicine fellows and 1 musculoskeletal radiologist. Measurements included articular overlap, percentage of articular coverage, Caton-Deschamps index, Blackburne-Peel index, and modified Insall-Salvati index. Results: Interrater reliability was high for Caton-Deschamps, Blackburne-Peel, and modified Insall-Salvati indices (intraclass correlation coefficient [ICC], 0.877, 0.828, and 0.787, respectively). Articular overlap and percentage articular coverage correlated well with each other (ICC, 0.961; P < .001) and with the Caton-Deschamps (overlap r = –0.271, P < .001; coverage r = –0.131, P = .037) and Blackburne-Peel (overlap r = 0.343, P < .001; coverage r = –0.238, P < .001) indices. Articular overlap and percentage coverage failed to correlate with the modified Insall-Salvati index (overlap r = –0.117, P = .091; coverage r = 0.007, P = .918). Conclusion: Patellar articular overlap and percentage of patellar articular coverage show promise as a simpler alternative to conventional, ratio-based measurements of patellar height. Future studies are needed to evaluate the range of normal and the relationship to our traditionally used measurements. PMID:27482530

  8. Prospects for DNA methods to measure human heritable mutation rates

    SciTech Connect

    Mendelsohn, M.L.

    1985-06-14

    A workshop cosponsored by ICPEMC and the US Department of Energy was held in Alta, Utah, December 9-13, 1984 to examine the extent to which DNA-oriented methods might provide new approaches to the important but intractable problem of measuring mutation rates in control and exposed human populations. The workshop identified and analyzed six DNA methods for detection of human heritable mutation, including several created at the meeting, and concluded that none of the methods combine sufficient feasibility and efficiency to be recommended for general application. 8 refs.

  9. VizieR Online Data Catalog: BV(RI)c light curves of NSVS 5066754 (Samec+, 2016)

    NASA Astrophysics Data System (ADS)

    Samec, R. G.; Nyaude, R.; Caton, D. B.; Faulkner, D. R.

    2017-01-01

    Our BVRcIc light curves were taken with the Dark 0.81m reflector at Philips Gap, North Carolina, on 17-20 inclusive, 2014 May with a thermoelectrically cooled (-40°C) 2K*2K Apogee Alta U44 CCD using standard Johnson-Cousins BVRcIc filters (320 observations with an exposure time of 60s in B, 333 observations with an exposure time of 24s in V, 338 observations with an exposure time of 20s in Rc, and 258 observations with an exposure time of 20s in Ic). Our complete set of observations is given in Table2. (1 data file).

  10. The caudinid sea cucumbers of New Zealand (Echinodermata: Holothuroidea: Molpadida: Caudinidae).

    PubMed

    Davey, Nicola; O'Loughlin, Mark

    2013-02-12

    Five species of Caudinidae occur in New Zealandwaters. Two new species are described: Paracaudina alta sp. nov.; Paracaudina reductia sp. nov. Two species reported previously are discussed: Paracaudina chilensis (Müller) and Paracaudina coriacea (Hutton). A lectotype has been established for P. coriacea (Hutton). Hedingia albicans var. glabra (Théel) is raised out of synonymy with Hedingia albicans (Théel), and the variety elevated to species status as Hedingia glabra (Théel). A key is provided for the New Zealand species of Caudinidae.

  11. Temporary Bridging Agents for use in Drilling and Completion of Enhanced Geothermal Systems

    SciTech Connect

    Watters, Larry; Watters, Jeff; Sutton, Joy; Combs, Kyle; Bour, Daniel; Petty, Susan; Rose, Peter; Mella, Michael

    2011-12-21

    CSI Technologies, in conjunction with Alta Rock Energy and the University of Utah have undergone a study investigating materials and mechanisms with potential for use in Enhanced Geothermal Systems wells as temporary diverters or lost circulation materials. Studies were also conducted with regards to particle size distribution and sealing effectiveness using a lab-scale slot testing apparatus to simulate fractures. From the slot testing a numerical correlation was developed to determine the optimal PSD for a given fracture size. Field trials conducted using materials from this study were also successful.

  12. Como Lo Hago Yo: Tratamiento Quirurgico Del Mielomeningocele

    PubMed Central

    Portillo, Santiago

    2014-01-01

    En Argentina hay plan de fortificación con ácido fólico. Diagnostico prenatal no siempre es correcto. Cierre según técnica. Cerramos músculo. No favorecemos corpectomía temprana en casos de cifosis. Suturamos la plaqueta. Cerramos el plano muscular. Hidrocefalia: Válvula de derivación, generalmente dentro de los dos primeros meses. Ventriculostomía no está indicada. Chiari II. Laminectomia cervical alta. Siringomielia: Derivación desde la cavidad al peritoneo. PMID:24791219

  13. Pressure Suppresses Serotonin Release by Guinea Pig Striatal Synaptosomes

    DTIC Science & Technology

    1988-01-01

    cuerpo estriado-de conejillos de Indias.-Undersea Biorned Res 19,98; 15(2):69-77. La exposici6n a presiones altas produce cambios neurol6gicos en...sinaptosomas dcl cuerpo estriado de conejillos de indias para estudiar Cielt Ajo de serotonih-a a 68 ATA. El hUlazgo mds sobresaliente fue )a disminuci6n en...la liberaci6n dc [3H-1scrotonina en sinaptosomas despolarizados de cuerpo estriado a 68 ATA. Delbido a que la funci6n de Ia serotonira a este nivel es

  14. Investigations of La Rioja terroir for wine production using 1H NMR metabolomics.

    PubMed

    López-Rituerto, Eva; Savorani, Francesco; Avenoza, Alberto; Busto, Jesús H; Peregrina, Jesús M; Engelsen, Søren Balling

    2012-04-04

    In this study, La Rioja wine terroir was investigated by the use of (1)H NMR metabolomics on must and wine samples. Rioja is a small wine region in central northern Spain which can geographically be divided into three subareas (Rioja Alta, Rioja Baja, and Rioja Alavesa). The winemaking process from must, through alcoholic and malolactic fermentation, was followed by NMR metabolomics and chemometrics of nine wineries in the Rioja subareas (terroirs). Application of interval extended canonical variate analysis (iECVA) showed discriminative power between wineries which are geographically very close. Isopentanol and isobutanol compounds were found to be key biomarkers for this differentiation.

  15. Geology and ground-water resources of Galveston County, Texas

    USGS Publications Warehouse

    Petitt, Ben McDowell; Winslow, Allen George

    1957-01-01

    Much additional ground water could be obtained from both the "Alta Loma" sand and the upper part of the Beaumont clay, especially in the northern and western parts of the county. Before large developments of supplies are planned, however, these areas should be explored by test drilling. The problems of well spacing and pumping rates should be thoroughly studied in order to determine the maximum development permitted by the ground-water supply. Current observations should be continued with special emphasis on the progress of salt-water encroachment.

  16. Protocolo Nacional para la Evaluacion de Disturbios en Suelos Forestales; Volumen II: Metodos complementarios, estadística y recoleccion de datos

    Treesearch

    Deborah S. Page-Dumroese; Ann M. Abbott; Thomas M. Rice

    2013-01-01

    Este documento-El Volumen II: Métodos complementarios, estadística y recolección de datos- define las bases, los métodos estadísticos y de almacenamiento de datos de un Protocolo Nacional para la Evaluación de Disturbios en Suelos Forestales. Esta guía técnica proporciona las bases de un método consistente, con definiciones comunes, para generar datos de alta calidad,...

  17. Effect of solutes on the heterogeneous nucleation temperature of supercooled water: an experimental determination.

    PubMed

    Wilson, P W; Haymet, A D J

    2009-04-21

    We investigate the effect of solute concentration on the heterogeneous ice nucleation temperature (T(het)) of aqueous solutions of both NaCl and d-glucose. An automatic lag time apparatus (ALTA) technique allows the dependence of T(het) on solute concentration to be determined with statistical significance. Our results point to the solute-induced lowering of T(het) being a factor of two times the equivalent melting point depression at any fixed concentration, the same factor reported for homogeneous nucleation experiments with small molecular weight solutes.

  18. Código árbol paralelizado para simulaciones astrofísicas. Experimentos de encuentros de galaxias compuestas

    NASA Astrophysics Data System (ADS)

    Viturro, H. R.; Carpintero, D. D.

    Se describe la implementación de un código árbol octal paralelizado desarrollado por los autores. Este código permite la integración del problema de N--cuerpos simultáneamente en varias computadoras (``cluster''), lo que permite desarrollar altas velocidades de cálculo. Se muestran los resultados de algunas integraciones de encuentros entre galaxias de disco con bulbo y halo, generadas mediante algoritmos no utilizados hasta el momento en este campo.

  19. MEGARA spectrograph mechanics and opto-mechanics in the AIV phase

    NASA Astrophysics Data System (ADS)

    Maldonado-Medina, Manuel; Pérez-Calpena, Ana; García Vargas, María. Luisa; Sánchez-Blanco, Ernesto; Martínez Delgado, Ismael; Gil de Paz, Armando; Arrillaga Echaniz, Xabier; Gallego Maestro, Jesús; Carrasco Licea, Esperanza; Iglesias-Páramo, Jorge; Sánchez-Moreno, Francisco

    2016-08-01

    MEGARA (Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía) is the future optical Integral-Field Unit (IFU) and Multi-Object Spectrograph (MOS) for the GTC 10.4m telescope. The spectrograph is currently being integrated in the laboratory for a pre-shipping review in September 2016. This paper presents the current status and final performance of the spectrograph mechanics and opto-mechanics, composed of the mechanisms and the large optomechanical elements mounts.

  20. CHEMICAL LEUCODERMA: INDIAN SCENARIO, PROGNOSIS, AND TREATMENT

    PubMed Central

    Bajaj, A K; Saraswat, Abir; Srivastav, P K

    2010-01-01

    Chemical leucoderma is an industrial disorder in developed countries and the common causative chemicals are phenols and catechols. Due to stringent controls and preventive measures the incidence has come down. In the recent past various chemicals in consumer products have also been documented to produce depigmentation. In India due to lax quality control measures chemical leucoderma due to consumer items is not uncommon.The various consumer items documented to cause contact depigmentation are sticker bindis, rain shoes, plastic chappals, hair dye/ black henna(kali mehndi), alta, wallets and even mobile plastic covers. PMID:21063517

  1. [National Post Hospital Care Project and length of hospitalization of patients with stroke 2010-2011].

    PubMed

    Canha, Catarina; Massano, Ana; Esperto, Hélder; Rato, Joana; Ferreira, Teresa; Geraldo, Argemiro

    2013-01-01

    Introdução: A Rede Nacional de Cuidados Continuados Integrados surgiu para proporcionar a continuação de cuidados após internamento ou para pessoas funcionalmente dependentes. Actualmente há uma grande dificuldade na integração dos doentes no domicílio ou em estruturas de retaguarda. Pretende-se comparar o impacto da referenciação para a Rede Nacional de Cuidados Continuados Integrados versus alta para domicílio, no tempo de internamento dos doentes com Acidente Vascular Cerebral, entre 2010 e 2011.Material e Métodos: Estudo retrospectivo envolvendo os doentes internados na Neurologia A e Unidade de Acidente Vascular Cerebral dos Hospitais da Universidade de Coimbra, naquele anos. Analisaram-se 1 209 processos, incluídos 819, caracterizados demograficamente, tempo de internamento, Score de Rankin modificado e destino pós-alta. Compararam-se os dados, relativamente ao tempo de internamento dos doentes com Acidente Vascular Cerebral, referenciados para a Rede Nacional de Cuidados Continuados Integrados e os com alta para domicílio, atendendo ao Score de Rankin final.Resultados: Em 2011, aumentaram os doentes referenciados para a Rede Nacional de Cuidados Continuados Integrados, 23,5% comparativamente 21,4%. Em 2011 o tempo de internamento, para um mesmo Score de Rankin, da população referenciada manteve-se superior: para um Rankin de 1: 11 dias para domicílio, 26 dias para os doentes referenciados; para um Rankin de 2: 13 dias para domicílio, 29 dias para a rede; para Rankin de 3: 13 dias para domicílio, 23 dias para referenciados; para um Rankin de 4: 17 dias para domicílio, 33 dias para Rede; e para um Rankin de 5: 27 dias para domicílio, 39 dias para Rede. Comparando com os tempos de internamento da população com alta para domicílio, estima-se que tenha representado mais 1 718 dias de internamento, em 2010 e1 198 dias, em 2011.Conclusão: A Rede Nacional de Cuidados Continuados Integrados é incapaz de responder às necessidades actuais

  2. El espectro de K2 Vol

    NASA Astrophysics Data System (ADS)

    Pintado, O. I.; Adelman, S. J.

    Se han obtenido espectros de alta dispersión para la estrella K2 Vol con el espectrógrafo REOSC del CASLEO en un rango de longitudes de ondas comprendido entre 3500 y 5050 Å. El espectro muestra evidencias de que la estrella es binaria. Se determinan las abundancias de los componentes químicos presentes en su atmósfera, como así también algunas características de su compañera.

  3. Digitized sunshine aids architects

    SciTech Connect

    Stix, G.

    1988-03-01

    The author explains how computers are being used to help architects design buildings to apply natural lighting. This is called daylighting. The aim is to reduce energy usage and to cut down on the need for harsh, expensive electric lighting. To help analyze distribution of natural light in a scale model architects employ innovative sky simulators, as well as digitized images and computer models that determine surface brightness. Mainframe computer programs calculate light distribution and model how daylight interacts with electric lighting systems. This article explains how daylighting is used at the Olympic Oval built for the Winter Games in Calgary, Alta., Canada and at Seattle's Pacific Museum of Flight.

  4. Moving up the information food chain: Deploying softbots on the World Wide Web

    SciTech Connect

    Etzioni, O.

    1996-12-31

    I view the World Wide Web as an information food chain. The maze of pages and hyperlinks that comprise the Web are at the very bottom of the chain. The WebCrawlers and Alta Vistas of the world are information herbivores; they graze on Web pages and regurgitate them as searchable indices. Today, most Web users feed near the bottom of the information food chain, but the time is ripe to move up. Since 1991, we have been building information carnivores, which intelligently hunt and feast on herbivores in Unix, on the Internet, and on the Web.

  5. Multijunction Solar Cell Efficiencies: Effect of Spectral Window, Optical Environment and Radiative Coupling

    DTIC Science & Technology

    2014-09-04

    a high quality GaAs solar cell in the absence of radiative coupling (B¼ 0).6,9 The current–voltage response of the cell was characterized by a solar ...efficiency multijunction cells . Experimental Alta Devices provided thin-lm, exible GaAs solar cells for the experimental portion of this study. The...Multijunction solar cell efficiencies: effect of spectral window, optical environment and radiative coupling† Carissa N. Eisler,a Ze’ev R. Abrams,b

  6. Evaluation of functional recovery by motor functional independence measure test of elderly after hip fracture in Serbia.

    PubMed

    Radosavljevic, Natasa; Nikolic, Dejan; Lazovic, Milica; Radosavljevic, Zoran; Jeremic, Aleksandar

    2014-01-01

    Introdução: o objectivo do estudo é a avaliação do nível de independência funcional através da aplicação da escala de Medida da Independência Funcional (Functional Independence Measure [FIM]) em doentes com idade superior a 65 anos, após fractura da anca.Material e Métodos: Foram estudados 203 doentes após fractura da anca, aplicando a escala MIF em 3 momentos: admissão do doente no hospital (Período 1), no momento da alta (Período 2) e 3 meses após a alta (Período 3); os doentes foram englobados em 3 grupos etários: Grupo65-74 , Grupo75-84 e Grupo+85 e em dois grupos, consoante o Índice de Gravidade (IG): grupo 0-1,99 (IG1) e grupo ≥ 2 (IG2).Resultados: No grupo de doentes com idêntico IG, observou-se um aumento dos valores da MIF no Período 2 e 3 em ambos osgéneros e nas primeiras duas classes etárias, ao passo que em doentes acima dos 85 anos, com IG mais elevado, observámos uma variação não significativa dos valores da MIF entre o momento da alta hospitalar e 3 meses após a alta.Discussão: A melhoria mais significativa da MIF foi obtida em doentes do sexo feminino no primeiro e terceiro grupos etários e com IG mais elevado.Conclusão: O género não constitui um factor preditivo significativo da recuperação da independência funcional medida através da aplicação da escala MIF em doentes com fractura da anca, embora a MIF no momento da admissão seja um bom indicador de recuperação funcional em doentes do sexo feminino em certos grupos etários (primeiro e terceiro grupos etários).

  7. Multisite Optical Imaging of Artificial Ionospheric Plasmas (Postprint)

    DTIC Science & Technology

    2011-11-09

    Frequency Active Auroral Research Program ( HAARP ) facility in Gakona, Alaska (62.4◦ N 145◦ W) after the trans- mitter reached full 3.6-MW power, these...The experiment was carried out on November 19, 2009, between 02:26 UT and 02:43:50 UT. Optical images were acquired at the HAARP site at 557.7 nm (O 1S...noise and integrated for 5 s at a temperature of −40 ◦C. A second system located 160 km north of the HAARP near Delta Junction used an Apogee Alta

  8. Development of Ground Water in the Houston District, Texas, 1970-1974

    USGS Publications Warehouse

    Gabrysch, R.K.

    1980-01-01

    Total withdrawals of ground water in the Houston district increased 9 percent from about 488 million gallons per day (21.4 cubic meters per second) in 1970 to about 532 million gallons per day (23.3 cubic meters per second) in 1974. The average annual rate of increase from 1960 to 1969 was about 6.3 percent. During 1970-74, increases in pumpage occurred in the Houston, Katy, and NASA areas; decreases occurred in the Pasadena and Alta Lorna areas; and the pumpage in the Baytown-La Porte and Texas City areas remained almost constant.

  9. [Prevalence of rhinitis and asthma respiratory symptoms in Spanish working population].

    PubMed

    Vicente-Herrero, M Teófila; Prieto-Andrés, Luis; López-González, Angel Arturo; Pérez-Francés, Carmen; Ramírez-Íñiguez de la Torre, M Victoria; Santamaría-Navarro, Cristina; Terradillos-García, M Jesús; Capdevila-García, Luisa M

    2014-01-01

    INTRODUCCIÓN: en salud laboral interesa conocer la prevalencia de los síntomas respiratorios relacionados con la rinitis y el asma en trabajadores españoles y sus variaciones por factores demográficos y laborales. El objetivo de esta investigación fue interrelacionar los síntomas respiratorios de vías altas y bajas. MÉTODOS: se solicitó a 2603 trabajadores de distintos sectores y provincias españolas contestar una encuesta que fue supervisada por un médico del trabajo.

  10. Amazon Paleofires Records: Comparison Between Land Use Change and Palaeoclimatic Events

    NASA Astrophysics Data System (ADS)

    Cordeiro, R. C.; Turcq, B.; Moreira, L. S.; Rodrigues, R. D. A.; Simões Filho, F. L.; Martins, G. S.; Santos, A. B.; Barbosa, M.; da Conceição, M. C. G.; Rodrigues, R. D. C.; Evangelista, H.; Moreira-Turcq, P. F.; Penido, Y. P.; Sifeddine, A.; Seoane, J.

    2014-12-01

    Interpreting the geological record of Amazon biomass combustion requires comparing charcoal accumulation rates in various biomes at different time scales. Charcoal accumulation rates, a proxy for palaeofire records, were obtained in sediment cores from Amazon lakes surrounded by several vegetation types and from a reservoir in an intense land use change region. The records presented in this study were obtained in the following areas i) a reservoir in Alta Floresta region (northern Mato Grosso State); ii) Lago do Saci (southern Pará State), a lake close to Alta Floresta and located at the southern border of Pará State; iii) a bog in an ecotone area in the Humaitá region (southern Amazonas State); iv) lakes in lateritic iron crust of the Carajás Hills (southeastern Pará State); v) Lago Comprido, a floodplain lake close to the Amazon River and surrounded by tropical rain forest (Monte Alegre, Pará State; vi) Lagoa da Pata in the Morro dos Seis Lagos alkaline complex (São Gabriel da Cachoeira, Amazonas State) and vii) Lago Caracaranã, a secluded lake in the northern Amazon cerrado (Roraima State). The highest charcoal accumulation rates were observed for modern records related to an intense change in land use at Alta Floresta, which had no precedent during the Holocene history of the Amazon. High charcoal accumulation rates that were observed in the Carajás region during low lake level phases in the Amazon in the mid-Holocene were comparable to those at the onset of the human settlement in Alta Floresta region. An increase in charcoal accumulation rate was observed in the late Holocene when the lake level was high, suggesting an interaction between climates and human presence. Low charcoal accumulation rates are typical of modern high rainfall environments, as observed in Lagoa da Pata where the environment is not susceptible to occurrences of wildfires even during relatively drier climatic phases. Low charcoal accumulation rates also exist in the relatively

  11. Report to the President: Realizing the Full Potential of Government-Held Spectrum to Spur Economic Growth

    DTIC Science & Technology

    2012-07-01

    Center for Energy and Environment, Mexico City Ernest J. Moniz Cecil and Ida Green Professor of Physics and Engineering Systems Director, MIT’s...Energy Initiative Massachusetts Institute of Technology Craig Mundie Chief Research and Strategy Officer Microsoft Corporation Ed Penhoet Director, Alta...regional discussions with its own neighbors, Mexico and Canada. R EP O RT TO T H E P R E S I D EN T R E A LI Z I N G T H E F U LL P O T EN T I A

  12. Lateral patellar dislocation: mechanism of disease, radiographic presentation, and management.

    PubMed

    Abramov, Michael; Stock, Harlan

    2013-04-01

    Lateral patellar dislocation is a common injury occurring in young active adults. The mechanism is that of twisting injury to the knee on a planted foot with valgus stress. Several predisposing factors, including femoral trochlear dysplasia, patella alta, and lateralization of the tibial tuberosity, contribute to patellar instability and lateral patellar dislocation. Magnetic resonance (MR) imaging of the knee is the modality of choice to evaluate underlying bone contusion patterns, associated soft-tissue injuries, and additional complex ligamentous and osteochondral injuries, many of which are not apparent on conventional radiographs.

  13. [Prevalence of malnutrition in not critically ill older inpatients].

    PubMed

    Fernández López, María Teresa; Fidalgo Baamil, Olga; López Doldán, Carmen; Bardasco Alonso, María Luisa; de Sas Prada, María Trinidad; Lagoa Labrador, Fiz; García García, María Jesús; Mato Mato, José Antonio

    2015-06-01

    Introducción: los cambios fisiológicos propios del envejecimiento, junto con distintos procesos patológicos, predisponen a los ancianos a la aparición de complicaciones nutricionales, siendo el estado nutricional un factor pronóstico importante. El objetivo del estudio es conocer la prevalencia de desnutrición en los mayores de 65 años en nuestro centro, tanto al ingreso como al alta. Métodos: realizamos un estudio transversal, observacional. Para ello evaluamos 174 pacientes mayores de 65 años que ingresaron de forma consecutiva, mediante la aplicación del Nutritional Risk Screening 2002 (NRS- 2002) y el Mini Nutritional Assessment Short Form (MNA-SF) en las primeras 48 horas de ingreso. Los pacientes oncológicos también se evaluaron mediante la Valoración Global Subjetiva Generada por el Paciente (VGS-GP). Al alta se realizó de nuevo el NRS-2002. Resultados: el 29,31% de los pacientes estaban en situación de riesgo nutricional según los resultados del NRS-2002 al ingreso. Este porcentaje aumentaba hasta el 57,89% al alta. El MNA-SF objetivó alteración nutricional en el 70,35% (54,65% riesgo de desnutrición, 15,7% desnutrición). Según el NRS-2002 el 34,14% de los pacientes con cáncer presentaban riesgo nutricional; sin embargo, la VGS-GP mostraba deterioro nutricional en el 56,41% de los casos (46,15% desnutrición moderada y 10,26% desnutrición grave). Existen grupos de pacientes (los de mayor edad, los ingresados de forma urgente, los que presentan insuficiencia cardíaca) con mayor riesgo de deterioro nutricional durante el ingreso (p < 0,05). Conclusiones: el porcentaje de pacientes mayores de 65 años en riesgo nutricional en nuestro centro es muy alto, tanto al ingreso como al alta. Se hace necesario el cribado nutricional sistemático.

  14. [In Process Citation].

    PubMed

    Alarcón Hormazábal, Manuel; Delgado Floody, Pedro; Castillo Mariqueo, Lidia; Thuiller Lepelegy, Nicole; Bórquez Becerra, Pablo; Sepúlveda Mancilla, Carlos; Rebolledo Quezada, Sara

    2016-03-25

    Introducción: existe una alta prevalencia de sedentarismo, sobrepeso y obesidad en jóvenes universitarios. Objetivo: el propósito del estudio fue determinar los efectos de un programa de entrenamiento intervalado de alta intensidad (HIIT) sobre el perfil antropométrico, glicemia basal y VO 2 máx (consumo máximo de oxígeno) de jóvenes sedentarios con malnutrición por exceso. Material y métodos: 6 mujeres y 2 hombres (2 obesos y 6 con sobrepeso) se sometieron a un programa de entrenamiento de alta intensidad de 8 semanas de duración (3 sesiones/semana). Se evaluó en ayuno y posterior a 72 horas de la última intervención; peso, índice de masa corporal (IMC), contorno de cintura (CC), perímetro de cadera y glicemia de basal. El VO 2 máx fue evaluado en condiciones normales previo a la primera sesión. Resultados: las variables de estudio no presentaron cambios significativos (p > 0,05), pero reportaron disminuciones porcentuales. El peso disminuyó un 0,18%, el IMC un 0,27%, el CC 2,67%, el perímetro de cadera un 1,15%, y el VO 2 máx un 0,48%. La glicemia basal presentó la mayor disminución, pasó de 95,13 ± 23,91 a 89,88 ± 12,45 mg/dl (5,52%), estabilizando y mejorando sus niveles en cada uno de los participantes. Conclusiones: el programa de entrenamiento intervalado de alta intensidad fue factible de realizar sin resultados adversos para la salud de los participantes, la glicemia basal mostró la mayor variación, estabilizando sus valores en los participantes, lo que es un indicador positivo dentro del programa. Es necesario seguir investigando sobre esta metodología HIIT y aumentar los tiempos de estudio para ver los cambios que se pueden producir en distintos parámetros metabólicos, antropométricos y físicos en población con malnutrición por exceso.

  15. Integral Field Spectroscopy and multi-wavelength imaging of nearby spiral galaxies: NGC 5668 as a pilot case for MEGARA

    NASA Astrophysics Data System (ADS)

    Marino, R. A.; Gil de Paz, A.; Castillo-Morales, A.; Muñoz-Mateos, J. C.; Sánchez, S. F.; Pérez-González, P. G.; Zamorano, J.; Gallego, J.; Alonso-Herrero, A.; Kannappan, S.; Boissier, S.; Eliche-Moral, M. C.; García-Vargas, M. L.; Carrasco, E.; Vílchez, J. M.; Sánchez-Moreno, F. M.

    2013-05-01

    MEGARA (Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía) is an optical Integral-Field Unit (IFU) and Multi-Object Spectrograph (MOS) designed for the GTC 10.4 m telescope in La Palma. MEGARA will be a 3rd generation instrument for GTC. It is led by the University Complutense of Madrid with the collaboration of INAOE, IAA, UPM and comprises more than 50 researchers from a large number of institutions worldwide.

  16. Natural Variability during Snowfall: Observations of Snowflake Microstructure and Calculations of Corresponding Snowfall Scattering Properties

    NASA Astrophysics Data System (ADS)

    Gergely, M.; Garrett, T. J.

    2015-12-01

    Significant progress has been achieved in approximating snowflakes and ice-cloud particles by increasingly more realistic and detailed shape models and in calculating associated scattering properties crucial to snowfall remote sensing. The applied approximations of the snowflake microstructure applied for the scattering calculations, however, are still based on few available field measurement data, often integrated over many individual snow storms, and only include several microstructural properties that cannot fully capture the natural variability during snowfall, e.g. different degrees of riming or aggregate snowflakes formed from more than one distinct ice crystal habit. In this study, (i) the natural variability of key microstructural properties during snowfall is quantified for individual snow storms based on high-resolution multi-view snowflake imaging data collected with the Multi-Angle Snowflake Camera (MASC) at Alta ski area (Alta, UT), and (ii) the corresponding variability in snowflake scattering properties is calculated. In addition to snowflake size, orientation and aspect ratio, 'particle complexity' (specifying snowflake perimeter and brightness variations in the MASC snowflake images) is included in the presented approach, yielding a quantitative and objective measure of characteristic snowflake microstructure, including crystal habit and degree of riming, important for realistically modelling snowfall scattering properties. The aim is to present an analysis of the impact of the observed natural microstructural variability on the derived snowflake scattering properties and ultimately on the snowfall radar reflectivity integrated over the obtained variability of snowflake microstructure and scattering properties.

  17. Seeing the Moon In a New Light: Educational Resources Developed in Association with M3

    NASA Astrophysics Data System (ADS)

    Runyon, C. J.; Shupla, C.; Shipp, S. S.; Hallau, K.; Boyce, K.; Pieters, C. M.

    2009-12-01

    M3 is a high spatial and spectral resolution spectrometer designed to help scientists better understand the compositional variation of the Moon’s surface. Flown on India’s first spacecraft to the Moon, Chandrayaan-1, M3 collected over 4.6 billion spectra! To facilitate student awareness and understanding of these data and resulting imagery, our team co-sponsors an on-line course, Geology of the Moon, for pre- and in-service teachers through Montana State University and has generated an educator guide: Seeing the Moon: Using Light to Investigate the Moon. This guide is a series of educational inquiry-based and hands-on activity modules created in support of the M3 science. In these modules, students investigate the physics of light and the geologic history of the Moon. Through these dynamic activities, 5th to 8th grade students experiment with light and color; collect and analyze authentic spectral data from rock samples using an ALTA hand-held reflectance spectrometer; map the rock types of the Moon; and develop theories of the Moon's history. M3 classroom loaner kits that include a lunar globe, rock samples, sets of the ALTA reflectance spectrometers, and more are available upon request.

  18. The Dominican Republic conjoined twins: ischiopagus, tetrapus, omphalophagus.

    PubMed

    Rosenberg, H K; Spackman, T J; Chait, A

    1978-05-01

    Alta and Clara, the Dominican Republic conjoined twins (ischiopagus, omphalopagus, tetrapus) were evaluated prior to separation with plain films, vaginograms, arteriograms, intravenous pyelogram, barium enema, and upper gastrointestinal series with small bowel follow-through. The clear demonstration of their internal anatomy allowed the surgeons to plan the operative approach and to make a reasonable judgment regarding viability of each baby. Each twin had a semicircular pelvis which joined the other to form a complete ring. There were a few hepatic arterial twigs from Alta which crossed the midline, proving at surgery to be a small bridge of tissue connecting the two livers. Clara's superior mesenteric arteries supplied the majority of the small bowel. Portal venous drainage was separate for each twin. Each baby had two kidneys in normal position with the bladders laterally placed. Each bladder received one ureter from each twin. Two separate small bowels joined proximal to the single colon which terminated in an anus related to Clara's pelvic structures. Following separation, each baby did well. Their postoperative anatomy is described.

  19. [Perception of physical fitness is associated with perception of body weight; sociodemographic analysis in Spain].

    PubMed

    Tejero-González, Carlos Ma

    2014-02-01

    Introducción: El objetivo del trabajo fue analizar la relación entre características sociodemográficas, percepción de peso corporal y percepción de estado de forma física. Métodos: Encuesta mediante entrevista personal. La muestra estuvo formada por 8.594 participantes residentes en España de entre 15 y 97 años. El error muestral fue ±1,07%. Resultados: Entre las personas que declararon estar bien de peso o tener una forma física buena o excelente hubo, proporcionalmente, mayor prevalencia de hombres, jóvenes de entre 15 y 34 años, personas con estudios universitarios y ciudadanos de clase social alta o muy alta (P < 0,001). Además, se infirió mayor posibilidad de percibir una forma física deficiente o muy mala en las cohortes que consideraron que les vendría bien ganar algo de peso (OR = 2,87), perder unos pocos kilos (OR = 2,31) o perder muchos kilos (OR = 8,78). Conclusión: La percepción del estado de forma física está asociada a la percepción del peso corporal, independientemente de las características sociodemográficas de las personas.

  20. A pictorial presentation of 3.0 Chicago Classification for esophageal motility disorders.

    PubMed

    Herbella, Fernando Augusto; Armijo, Priscila Rodrigues; Patti, Marco Giuseppe

    2016-01-01

    High resolution manometry changed several esophageal motility paradigms. The 3.0 Chicago Classification defined manometric criteria for named esophageal motility disorders. We present a pictorial atlas of motility disorders. Achalasia types, esophagogastric junction obstruction, absent contractility, distal esophageal spasm, hypercontractile esophagus (jackhammer), ineffective esophageal motility, and fragmented peristalsis are depicted with high-resolution manometry plots. RESUMO A manometria de alta resolução mudou vários paradigmas da motilidade digestiva. A Classificação de Chicago, na versão 3.0, definiu critérios manométricos para as doenças da motilidade esofagiana. O presente artigo é um atlas das dismotilidades descritas. Tipos de acalásia, obstrução ao nível da junção esofagogástrica, contrações ausentes, espasmo esofagiano distal, esôfago hipercontrátil, motilidade esofagiana ineficaz e peristalse fragmentada são mostradas em traçados de manometria de alta resolução.

  1. [Rupture of splenic artery pseudoaneurysm: an unusual cause of upper gastrointetinal bleeding].

    PubMed

    Herrera-Fernández, Francisco Antonio; Palomeque-Jiménez, Antonio; Serrano-Puche, Félix; Calzado-Baeza, Salvador Francisco; Reyes-Moreno, Montserrat

    2014-01-01

    Antecedentes: tras una pancreatitis, el sangrado de un pseudoquiste pancreático es una complicación grave que puede conducir a una hemorragia digestiva masiva. La ruptura de ese pseudoquiste en el estómago es rara. Caso clínico: se comunica el caso de una paciente femenina de 34 años de edad, con antecedentes de alcoholismo y un pseudoquiste pancreático. Después de abandonar el estudio y seguimiento del pseudoquiste pancreático un año más tarde reingresó de urgencia debido a un cuadro de hemorragia digestiva alta. En una endoscopia del tubo digestivo alto se encontró sangrado activo en la región del fundus gástrico, que no pudo controlarse. La angio-tomografía axial computada abdominal confirmó el diagnóstico de pseudoaneurisma de la arteria esplénica, en íntimo contacto con la pared posterior del estómago y quizá fistulizado al mismo. La paciente se intervino con carácter urgente realizándose esplenopancreatectomía distal y fistulorrafia. Conclusión: en raras ocasiones la ruptura de un pseudoaneurisma de la arteria esplénica puede iniciarse como una hemorragia digestiva alta, que puede ser letal si no es tratada con urgencia.

  2. Telescopio Solar en Hα (HASTA)

    NASA Astrophysics Data System (ADS)

    Fernández Borda, R.; Francile, C.; Bagala, G.; Bauer, O.; Haerendel, G.; Rieger, E.; Rovira, M.

    El Telescopio Solar en Hα (Hα Solar Telescope for Argentina (-HASTA-) fue recientemente instalado en la Estación Astronómica de Altura Carlos Ulrrico Cesco (OAFA) en El Leoncito. Este instrumento estudiará la evolución de las fulguraciones solares desde tierra con alta resolución temporal y espacial. HASTA es un telescopio refractor de 110 mm con una distancia focal de 165 cm, un filtro Lyot sintonizable (±1Å) con un ancho de banda de 0.3 Å y una cámara CCD de alta resolución (1280×1024 pixels). Todo el conjunto es controlado en forma remota por una PC, la cual además adquiere datos del Sistema de Posicionamiento Global (GPS) y de la estación meteorológica. Diseñado para detectar fulguraciones, el instrumento trabaja en dos modos (patrullaje y fulguración) con una resolución espacial de 1.5 arcseg por pixel y una resolución temporal de 2 seg. HASTA comenzó a operar en Mayo de 1998 y, junto con otros tres instrumentos solares, que se están instalando o se instalaron, harán de El Leoncito un polo de observación solar importante en el Hemisferio Sur.

  3. An assessment of the visibility of MeSH-indexed medical web catalogs through search engines.

    PubMed Central

    Zweigenbaum, P.; Darmoni, S. J.; Grabar, N.; Douyère, M.; Benichou, J.

    2002-01-01

    Manually indexed Internet health catalogs such as CliniWeb or CISMeF provide resources for retrieving high-quality health information. Users of these quality-controlled subject gateways are most often referred to them by general search engines such as Google, AltaVista, etc. This raises several questions, among which the following: what is the relative visibility of medical Internet catalogs through search engines? This study addresses this issue by measuring and comparing the visibility of six major, MeSH-indexed health catalogs through four different search engines (AltaVista, Google, Lycos, Northern Light) in two languages (English and French). Over half a million queries were sent to the search engines; for most of these search engines, according to our measures at the time the queries were sent, the most visible catalog for English MeSH terms was CliniWeb and the most visible one for French MeSH terms was CISMeF. PMID:12463965

  4. Characterization of seeds of selected wild species of rice (Oryza) stored under high temperature and humidity conditions.

    PubMed

    Das, Smruti; Nayak, Monalisa; Patra, B C; Ramakrishnan, B; Krishnan, P

    2010-06-01

    Wild progenitors of rice (Oryza) are an invaluable resource for restoring genetic diversity and incorporating useful traits back into cultivars. Studies were conducted to characterize the biochemical changes, including SDS-PAGE banding pattern of storage proteins in seeds of six wild species (Oryza alta, O. grandiglumis, O. meridionalis, O. nivara, O. officinalis and O. rhizomatis) of rice stored under high temperature (45 degrees C) and humidity (approixmately 100%) for 15 days, which facilitated accelerated deterioration. Under the treated conditions, seeds of different wild rice species showed decrease in per cent germination and concentrations of protein and starch, but increase in conductivity of leachate and content of sugar. The SDS-PAGE analysis of seed proteins showed that not only the total number of bands, but also their intensity in terms of thickness differed for each species under storage. The total number of bands ranged from 11 to 22, but none of the species showed all the bands. Similarity index for protein bands between the control and treated seeds was observed to be least in O. rhizomatis and O. alta, while the indices were 0.7 and 0.625 for O. officinalis and O. nivara, respectively. This study clearly showed that seed deterioration led to distinctive biochemical changes, including the presence or absence as well as altered levels of intensity of proteins. Hence, SDS-PAGE protein banding pattern can be used effectively to characterize deterioration of seeds of different wild species of rice.

  5. CHANGES IN THE GENETIC STRUCTURE OF A VALLEY IN THE PYRENEES (CATALONIA, SPAIN).

    PubMed

    Toledo, Alejandra; Pámpanas, Leyre; García, David; Pettener, Davide; González-Martin, Antonio

    2017-01-01

    In some situations the use of isonymy is the best strategy for studying the genetic structure of a population and its biological history. In this study different population parameters were calculated for one of the most isolated valleys in the Pyrenees - the region of the Alta Ribagorça in Catalonia, Spain. Surnames from marriage records covering the continuous period from 1638 to 1988 were used. From 1950 onwards this region underwent important social, economic and biological changes related to the introduction of hydroelectric and mining industries, and the change from livestock farming to a society based on services. Two periods were analysed (1638-1950 and 1951-1988) allowing population changes that occurred in the region to be determined. The study focused on calculating the number of surnames by gender, diversity index (H), population sub-structure (RP-RPr)/RPr and inbreeding coefficient (F t) and detection of possible genetic barriers. The results demonstrate the importance that geography initially had in shaping the genetic structure of the population and how this was gradually replaced by other parameters such as roads or the social and economic importance of towns. An interesting phenomenon is that inbreeding has traditionally been associated with rural life, isolation and endogamy. However, for the Alta Ribagorça it was observed that in the second period, 1951-1988, inbreeding mainly depended on the composition of migrant groups and the reaction of the native population to the arrival of migrants from outside the region.

  6. Prevalence of cleft lip and cleft palate in rural north-central guatemala.

    PubMed

    Matute, Jorge; Lydick, Elaine A; Torres, Olga R; Owen, Karen K; Jacobsen, Kathryn H

    2015-05-01

    To estimate the number of new cases of cleft lip and cleft palate in the department (state) of Alta Verapaz, Guatemala, in 2012. Cross-sectional survey of midwives from communities identified through a two-stage cluster-sampling process. Midwives were asked how many babies they had delivered in the past year and how many of those newborns had various types of birth defects, as illustrated in pictures. Indigenous Mayan communities in rural north-central Guatemala. Midwives (n = 129) who had delivered babies in the previous year. Reports of babies born with cleft lip and cleft palate. A 1-year prevalence rate of 18.9 per 10,000 for cleft lip and 4.7 per 10,000 for cleft palate was estimated for Alta Verapaz. None of the cases of cleft lip also had cleft palate. The indigenous communities in north-central Guatemala might have a relatively high cleft lip prevalence rate compared with the global average.

  7. Different immune regulatory potential of Lactobacillus plantarum and Lactobacillus sakei isolated from Kimchi.

    PubMed

    Hong, Yi-Fan; Kim, Hangeun; Kim, Hye Rim; Gim, Min Geun; Chung, Dae Kyun

    2014-12-28

    It is known that lactic acid bacteria (LAB) have many beneficial health effects, including antioxidative activity and immune regulation. In this study, the immune regulatory effects of Lactobacillus sakei and Lactobacillus plantarum, which are found in different types of kimchi, were evaluated. L. sakei and its lipoteichoic acid (LTA) have greater immune stimulating potential in IL-12, IFN-γ, and TNF-α production as compared with L. plantarum in an in vitro condition. On the other hand, L. plantarum is assumed to repress the Th1 immune response in murine experiments. After being injected with LPS, L. plantarum-fed mice maintained a healthier state, and the level of TNF-α in their blood was lower than in other bacterial strainfed mice and in the LPS-only control mice. Additionally, IL-12 production was significantly decreased and the production of IL-4 was greatly increased in the splenocytes from L. plantarum-fed mice. Further experiments revealed that the pre-injection of purified LTA from L. plantarum (pLTA), L. sakei (sLTA), and S. aureus (aLTA) decreased TNF-α and IL-4 production in LPS-injected mice. Mouse IL-12, however, was significantly increased by aLTA pre-injection. In conclusion, the L. sakei and L. plantarum strains have immune regulation effects, but the effects differ in cytokine production and the regulatory effects of the Th1/Th2 immune response.

  8. Structural evolution of the Sarandí del Yí Shear Zone, Uruguay: kinematics, deformation conditions and tectonic significance

    NASA Astrophysics Data System (ADS)

    Oriolo, S.; Oyhantçabal, P.; Heidelbach, F.; Wemmer, K.; Siegesmund, S.

    2015-10-01

    The Sarandí del Yí Shear Zone is a crustal-scale shear zone that separates the Piedra Alta Terrane from the Nico Pérez Terrane and the Dom Feliciano Belt in southern Uruguay. It represents the eastern margin of the Río de la Plata Craton and, consequently, one of the main structural features of the Precambrian basement of Western Gondwana. This shear zone first underwent dextral shearing under upper to middle amphibolite facies conditions, giving rise to the reactivation of pre-existing crustal fabrics in the easternmost Piedra Alta Terrane. Afterwards, pure-shear-dominated sinistral shearing with contemporaneous magmatism took place under lower amphibolite to upper greenschist facies conditions. The mylonites resulting from this event were then locally reactivated by a cataclastic deformation. This evolution points to strain localization under progressively retrograde conditions with time, indicating that the Sarandí del Yí Shear Zone represents an example of a thinning shear zone related to the collisional to post-collisional evolution of the Dom Feliciano Belt that occurred between the Meso- to Neoproterozoic (>600 Ma) and late Ediacaran-lower Cambrian times.

  9. Neutrino-driven wakefield plasma accelerator

    NASA Astrophysics Data System (ADS)

    Rios, L. A.; Serbeto, A.

    2003-08-01

    Processos envolvendo neutrinos são importantes em uma grande variedade de fenômenos astrofísicos, como as explosões de supernovas. Estes objetos, assim como os pulsares e as galáxias starburst, têm sido propostos como aceleradores cósmicos de partículas de altas energias. Neste trabalho, um modelo clássico de fluidos é utilizado para estudar a interação não-linear entre um feixe de neutrinos e um plasma não-colisional relativístico de pósitrons e elétrons na presença de um campo magnético. Durante a interação, uma onda híbrida superior de grande amplitude é excitada. Para parâmetros típicos de supernovas, verificamos que partículas carregadas "capturadas" por essa onda podem ser aceleradas a altas energias. Este resultado pode ser importante no estudo de mecanismos aceleradores de partículas em ambientes astrofísicos.

  10. Relevamiento de HI en el Hemisferio Austral

    NASA Astrophysics Data System (ADS)

    Arnal, E. M.; Bajaja, E.; Morras, R.; Pöppel, W. G. L.

    Un nuevo relevamiento de HI de todo el Hemisferio Austral, comprendido entre -90o <= δ <= -25o, está siendo observado con la antena I del IAR. El mismo es realizado con alta sensibilidad (r.m.s.<= 0.07 K) y alta resolución espectral (1 Km/s). Un total de ~50000 posiciones en el cielo serán observadas, espaciadas en una grilla (lxb) de (0.5o x 0.5o). El intervalo de velocidades cubierto en este relevamiento abarca el rango -450 km/s a +450 km/s en el sistema LSR. Esta base de datos será corregida por efectos de ``stray radiation''. Al presente se ha observado ~70% del total del relevamiento. El mismo es complementario de uno similar realizado en el Hemisferio Norte por Hartman y Burton (1996), con cubrimiento espacial, sensibilidad, resoluciones espaciales y en velocidad, similares a los del IAR. El objetivo final de ambos relevamientos es disponer de una base de datos uniforme en todo el cielo.

  11. Fontes binárias supermoles de raios X

    NASA Astrophysics Data System (ADS)

    Pires, A. M.; Janot Pacheco, E.

    2003-08-01

    Estuda-se as características físicas das fontes supermoles (de raios X (SSS), utilizando dados ópticos e em altas energias, no âmbito de um trabalho de IC. Trata-se de binárias que apresentam espectro X muito mole, baixas temperaturas e altas luminosidades bolométricas. Esse sistemas são compostos por uma anã branca realizando fusão em sua superfície, a partir de matéria perdida pela estrela companheira. Os resíduos de fusão se acumulam na superfície da anã branca, e essa pode ultrapassar o limite de Chadrasekhar, produzir um colapso gravitacional, sendo esse um dos cenários propostos para as explosões de SN Ia. Apresentamos nesta comunicação o estado da arte das características físicas das fontes SSS, situando-as no âmbito das VCs. Procuramos também situar esses objetos em relação às variáveis galácticas V Sge, na medida em que os dois grupos apresentam certas caracerísticas bastante semelhantes.A metodologia adotada é aquela pedagógico-cognitiva clássica de um trabalho de IC na área de ciências exatas.

  12. Structure-based tailoring of compound libraries for high-throughput screening: discovery of novel EphB4 kinase inhibitors.

    PubMed

    Kolb, Peter; Kipouros, Catherine Berset; Huang, Danzhi; Caflisch, Amedeo

    2008-10-01

    High-throughput docking is a computational tool frequently used to discover small-molecule inhibitors of enzymes or receptors of known three-dimensional structure. Because of the large number of molecules in chemical libraries, automatic procedures to prune multimillion compound collections are useful for high-throughput docking and necessary for in vitro screening. Here, we propose an anchor-based library tailoring approach (termed ALTA) to focus a chemical library by docking and prioritizing molecular fragments according to their binding energy which includes continuum electrostatics solvation. In principle, ALTA does not require prior knowledge of known inhibitors, but receptor-based pharmacophore information (hydrogen bonds with the hinge region) is additionally used here to identify molecules with optimal anchor fragments for the ATP-binding site of the EphB4 receptor tyrosine kinase. The 21,418 molecules of the focused library (from an initial collection of about 730,000) are docked into EphB4 and ranked by force-field-based energy including electrostatic solvation. Among the 43 compounds tested in vitro, eight molecules originating from two different anchors show low-micromolar activity in a fluorescence-based enzymatic assay. Four of them are active in a cell-based assay and are potential anti-angiogenic compounds.

  13. DOE/NETL's advanced NOx emissions control technology R & D program

    SciTech Connect

    Lani, B.W.; Feeley, T.J. III; Miller, C.E.; Carney, B.A.; Murphy, J.T.

    2006-11-15

    Efforts are underway to provide more cost-effective options for coal-fired power plants to meet stringent emissions limits. Several recently completed DOE/NETL R & D projects were successful in achieving the short-term goal of controlling NOx emissions at 0.15 lb/MMBtu using in-furnace technologies. In anticipation of CAIR and possible congressional multi-pollutant legislation, DOE/NETL issued a solicitation in 2004 to continue R & D efforts to meet the 2007 goal and to initiate R & D targeting the 2010 goal of achieving 0.10 lb/MMBtu using in-furnace technologies in lieu of SCR. As a result, four new NOx R & D projects are currently underway and will be completed over the next three years. The article outlines: ALSTOM's Project on developing an enhanced combustion, low NOx burner for tangentially-fired boilers; Babcock and Wilcox's demonstration of an advanced NOx control technology to achieve an emission rate of 0.10 lb/MMBtu while burning bituminous coal for both wall- and cyclone-fired boilers; Reaction Engineering International's (REI) full-scale field testing of advanced layered technology application (ALTA) NOx control for cyclone fired boilers; and pilot-scale testing of ALTA NOx control of coal-fired boilers also by REI. DOE/NETL has begun an R & D effort to optimize performance of SCR controls to achieve the long term goal of 0.01 lb/MMBtu NOx emission rate by 2020. 1 fig.

  14. [Reversible neuropsychological deterioration associated to zonisamide in a paediatric patient with tuberous sclerosis].

    PubMed

    Fournier-Del Castillo, M Concepción; Melero-Llorente, Javier; Blanco-Beregana, Miriam; Robles-Bermejo, Fernando; Budke, Marcelo; Garcia-Fernandez, Marta; Garcia-Penas, Juan José; Perez-Jimenez, M Ángeles

    2015-01-16

    Objetivo. Documentar el deterioro cognitivo reversible asociado a altas dosis de zonisamida, utilizando indices de cambio fiable para controlar los efectos de practica derivados de evaluaciones neuropsicologicas repetidas. Caso clinico. Niño de 11 años con complejo esclerosis tuberosa y epilepsia refractaria del lobulo frontal izquierdo, evaluado en el contexto de un programa de cirugia de la epilepsia pediatrica. La zona epileptogena se relaciono con un tuber epileptogeno localizado en el giro frontal inferior del hemisferio izquierdo. Los efectos de altas dosis de zonisamida mimetizaron una afectacion de la corteza elocuente en la zona epileptogena y un impacto de las crisis no controladas en el funcionamiento cognitivo asociado al hemisferio dominante para el lenguaje. La retirada del farmaco mejoro significativamente, mas alla de los efectos de practica, el cociente intelectual total, el indice intelectual de comprension verbal y habilidades cognitivas especificas sustentadas en el lenguaje. Conclusiones. La diferenciacion entre los efectos cognitivos de los farmacos y la existencia de un deficit funcional por afectacion de la corteza elocuente en el area epileptogena puede ser crucial para la toma de decisiones en cirugia de la epilepsia.

  15. Air pollution and hospital admissions for respiratory diseases in the subequatorial Amazon: a time series approach.

    PubMed

    Ignotti, Eliane; Hacon, Sandra de Souza; Junger, Washington Leite; Mourão, Dennys; Longo, Karla; Freitas, Saulo; Artaxo, Paulo; Leon, Antônio Carlos Monteiro Ponce de

    2010-04-01

    The objective of the study is to evaluate the effect of the daily variation in concentrations of fine particulate matter (diameter less than 2.5 microm--PM2.5) resulting from the burning of biomass on the daily number of hospitalizations of children and elderly people for respiratory diseases, in Alta Floresta and Tangará da Serra in the Brazilian Amazon in 2005. This is an ecological time series study that uses data on daily number of hospitalizations of children and the elderly for respiratory diseases, and estimated concentration of PM2.5. In Alta Floresta, the percentage increases in the relative risk (%RR) of hospitalization for respiratory diseases in children were significant for the whole year and for the dry season with 3-4 day lags. In the dry season these measurements reach 6% (95%CI: 1.4-10.8). The associations were significant for moving averages of 3-5 days. The %RR for the elderly was significant for the current day of the drought, with a 6.8% increase (95%CI: 0.5-13.5) for each additional 10 microg/m3 of PM2.5. No associations were verified for Tangará da Serra. The PM2.5 from the burning of biomass increased hospitalizations for respiratory diseases in children and the elderly.

  16. [Neurological health care activity in a recently created district hospital: model of high efficiency].

    PubMed

    Jiménez-Jiménez, Félix J; Plaza-Nieto, José F; Navacerrada, Francisco; Alonso-Navarro, Hortensia; Pilo-de-la-Fuente, Belén; Arroyo-Solera, Margarita; Guillán, Marta; Calleja, Marisol; Moreno-Puertas, Dolores

    2015-03-01

    Objetivo. Analizar la actividad asistencial de un hospital comarcal de reciente creacion, con especial enfasis en los indicadores asistenciales en consultas externas y en actos medicos de pacientes ingresados. Pacientes y metodos. Describimos la actividad asistencial realizada por nuestra seccion de neurologia durante los años 2008-2013. Se comparan nuestros indicadores asistenciales de los años 2012 y 2013 (quinto y sexto año de actividad), tanto en consultas externas como en pacientes ingresados, con los de otros dos hospitales de caracteristicas similares, otros tres de nivel secundario y otros cuatro de nivel terciario. Resultados. La seccion de neurologia de nuestro hospital fue la que realizo mayor numero de primeras consultas por facultativo, tuvo el mejor indice de consultas sucesivas/primeras y el mayor porcentaje de consultas de alta resolucion, tuvo la menor estancia media en los dos grupos relacionados por el diagnostico (GRD) mas frecuentes en nuestra especialidad, y fue la segunda en ingresos por facultativo del GRD 'ictus con infarto' y la tercera en ingresos por facultativo del GRD 'otros trastornos del sistema nervioso'. Conclusiones. Los indicadores asistenciales de la seccion de neurologia de nuestro hospital muestran un modelo de muy alta eficiencia, al cual solo se aproximan los de otros dos de caracteristicas y desarrollo similares al nuestro. La implantacion gradual de modelos similares al de estos tres hospitales en los niveles secundario y terciario podria ser de utilidad en la mejora de su eficiencia asistencial.

  17. Direct observation of B-site ordering in LSAT: (La{sub 0.3}Sr{sub 0.7})(Al{sub 0.65}Ta{sub 0.35})O{sub 3} single crystal

    SciTech Connect

    Okada, S.; Ohashi, K.; Nishikawa, N.; Tokunaga, T.; Sasaki, K.; Kobayashi, S.; Yamamoto, T.

    2016-06-20

    B-site atomic column regularity was directly observed in (La{sub 0.3}Sr{sub 0.7})(Al{sub 0.65}Ta{sub 0.35})O{sub 3} single crystals by Z-contrast imaging during high-angle annular dark-field scanning transmission electron microscopy. Two types of areas with different B-site regularity were found. One of the ordered structures, which was similar to a previously reported structure, was several tens of nanometers in size and had a rock salt-like regularity owing to variation in the B-site Al/Ta ratio. The other structure existed as disordered-like domains in the (La{sub 0.3}Sr{sub 0.7})(Al{sub 0.65}Ta{sub 0.35})O{sub 3} crystal. Fourier transform processing revealed that the disordered-like domains consisted of very fine ordered domains of several nanometers in size. These very fine ordered structures had a different B-site Al/Ta ratio variation with a rock salt-like regularity.

  18. Presence of polycyclic aromatic hydrocarbons (PAHs) in top soils from rural terrains in Mexico City.

    PubMed

    Ortiz, Rutilio; Vega, Salvador; Gutiérrez, Rey; Gibson, Richard; Schettino, Beatriz; Ramirez, María de Lourdes

    2012-03-01

    A soil survey was carried out to determine the levels and sources and concentrations of 16 polycyclic aromatic hydrocarbons in 2 semi-rural terrains in Mexico City (Tlahuac and Milpa Alta) during 2008-2009. PAH determination was made by Soxhlet extraction and chromatographic clean-up with final analysis by gas chromatography with a flame ionization detector. The concentrations in Tlahuac were 9.13 mg/kg (dry season) and 11.22 mg/kg (wet season) and in Milpa Alta were 11.43 mg/kg (dry season) and 35.77 mg/kg (wet season). The variation of total PAH concentrations are due to environmental and anthropogenic conditions within Mexico City and also the addition of compost to the soils. According to Mexican regulations BaP, DaA, BbF and Ind were within the permissible limit (2 mg/kg) for agricultural and residential soils and BkF was close to the limit (8 mg/kg). The total PAH concentrations do however surpass the permissible European limit of 1,000 μg/kg and there is probably some risk to human health, in spite of measures aimed at decreasing contamination in Mexico City. Long term monitoring of soils will be necessary.

  19. [A self-care group in diabetes mellitus type 2].

    PubMed

    Díaz-Nieto, L; Galán-Cuevas, S; Fernández-Pardo, G

    1993-01-01

    The present work presents the experience of a diabetes self-care group in San Antonio Tecomitl, Milpa Alta, D.F., México. Diabetes is a serious disease posing a public health problem in our country, since it affects a great number of productive age persons, causing, if uncontrolled, deleterious effects on their life quality and expectancy because of vascular and neural complications. We carried out an intervention in six female patients diagnosed as having diabetes mellitus type II, with different stages of the disease; all of them were residents of Milpa Alta municipality, with an average age of 63.6 years. They were receiving different doses of oral hypoglycemic agents. The group of patients met once a week for two-hour sessions in which they received: a) information about diabetes mellitus, b) self-care training and c) profound relaxation techniques. In each session we evaluated glycemia, body weight and blood pressure in each patient. Results from the intervention showed no correlation between body weight and blood pressure, though there was a significant variation in glycemia levels after the intervention.

  20. Genetic admixture of eight Mexican indigenous populations: based on five polymarker, HLA-DQA1, ABO, and RH loci.

    PubMed

    Buentello-Malo, Leonora; Peñaloza-Espinosa, Rosenda I; Salamanca-Gómez, Fabio; Cerda-Flores, Ricardo M

    2008-01-01

    This study explores the genetic admixture of eight Mexican indigenous populations (Otomi-Ixmiquilpan, Otomi-Actopan, Tzeltales, Nahua-Milpa-Alta, Nahua-Xochimilco, Nahua-Zitlala, Nahua-Ixhuatlancillo, and Nahua-Coyolillo) on the basis of five PCR-based polymorphic DNA loci (LDLR, GYPA, HBGG, D7S8, GC), HLA_DQA1, and the blood groups ABO and Rh (CcDEe). Among the indigenous populations, the highest gene frequencies for O and D were 0.9703 and 1.000 for Zitlala (State of Guerrero) and 0.9955 and 0.9414 for Tzeltales (State of Chiapas), respectively. Maximum likelihood estimates of admixture components yield a trihybrid model with Amerindian (assuming that Nahua-Zitlala is the most representative indigenous population), Spanish, and African ancestry with the admixture proportions: 93.03, 6.03, and 0.94 for Tzeltales, and 28.99, 44.03, and 26.98 for Coyolillo. A contribution of the ancestral populations of Ixhuatlancillo, Actopan, Ixmiquilpan, Milpa-Alta, and Xochimilco were found with the following average of admixture proportions: 75.84, 22.50, and 1.66. The findings herein demonstrate that the genetic admixture of the Mexican indigenous populations who at present speak the same Amer-Indian language can be differentiated and that the majority of them have less ancestral indigenous contribution than those considered as Mestizo populations.