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Long Term Outcomes of Cross-Hatching Eustachian Tuboplasty  [PDF]
Carlos Yanez, Sandra Velázquez, Nallely Mora
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2015, DOI: 10.4236/ijohns.2015.41002
Abstract: Objective: To review the long term outcomes of cross-hatching Eustachian Tuboplasty (ChEt) in patients with chronic obstructive Eustachian tube dysfunction (COETD), as well as assess the clinical factors associated with surgical success. Study Design: Retrospective case series review. Setting: Tertiary healthcare institution. Methods: This is a retrospective review of non-revision ChET for COETD. Follow-up period was 5 years. The inclusion criteria were persistent otitis media with effusion, conductive hearing loss of 5 or more years, and constant COETD related-symptoms. The curvature of the posterior cushion was modified using an argon laser to alter the spring of the cartilage alleviating the obstructed valve’s aperture. Several clinical factors were reviewed in relation to the successful opening of Eustachian tube valve. Results: One hundred and twenty patients, 72 males/48 females, average age 42.4 + 2 years old, met study inclusion criteria. COETD patients/ obstructive causes were: Posterior cushion hypertrophy, 68 (56.6%); Tensor Veli and Levator Veli Palatini muscles hypertrophy, 15 (12.5%); Remarkable mucosal hypertrophic disease, 37 (30.8%). Total of ET tubes was 198. Bilateral 143 (72.2%), 55 unilateral (27.7%) ET valve was seen more open postoperatively on simple endoscopy (SE) and slow motion video analysis (SMVEA). There were no complications. Mean pure tone average improved by 20 dB postoperatively; P = 0.015. Mean immitance changes in tympanometric measurements improved postoperatively at least 0.10 mmhos in 91% of the patients (P = 0.010). Resolution of symptoms was considered a successful outcome. Failure correlated with the severity of disease. Conclusion: High rates of improvement (96%) were achieved. ChEt is a promising technique for the treatment of COETD
Distribución espacio-temporal de aves acuáticas invernantes en la Ciénega de Tláhuac, planicie lacustre de Chalco, México Spatio-temporal distribution of wintering aquatic birds in the Ciénega de Tláhuac, Chalco lacustrine plain, Mexico
Víctor Ayala-Pérez,Nallely Arce,Roberto Carmona
Revista mexicana de biodiversidad , 2013,
Abstract: La avifauna acuática invernal de la ciénaga de Tláhuac fue estudiada de noviembre de 2006 a febrero de 2007; se identificaron 40 especies, 3 de las cuales corresponden a nuevos registros. El área fue utilizada por, al menos, 25 000 aves acuáticas; 5 fueron las especies dominantes: 3 anátidos (Anas clypeata, A. platyrhynchos diazi y Oxyura jamaicensis), 1 ave playera (Limnodromus scolopaceus) y 1 gallareta (Fulica americana). Sobresalió por su abundancia A. platyrhynchos diazi, subespecie endémica y amenazada, ya que los 2 200 individuos observados representan el 4% de la población total estimada. Las especies mejor representadas mostraron una utilización espacial diferencial, con 3 patrones: 1) especies con distribución uniforme (A. clypeata y F. americana), 2) las agrupadas en una sola porción del humedal (A.p. diazi y O. jamaicensis) y 3) aquella con afinidad por 2 porciones del humedal (L. scolopaceus). La ciénega de Tláhuac es un humedal importante para la avifauna de la región; en ella ocurren, durante el invierno, 6 especies protegidas por el gobierno mexicano; sin embargo, existen factores antrópicos que ponen en riesgo su integridad y que hacen necesarias acciones de protección y conservación. The winter waterbirds of the Ciénega de Tláhuac were studied from November 2006 to February 2007; a total of 40 species were observed, with 3 new records. The area was usedby al least 25 000 birds; 5 species were the dominant: 3 anatids (Anas clypeata, A. platyrhynchos diazi y Oxyura jamaicensis), 1 shorebird (Limnodromus scolopaceus) and 1 coot (Fulica americana). The abundance of A. platyrhynchos diazi, a threatened endemic subspecies, was remarkable because the 2 200 individuals observed represent 4% of its population.The best represented species showed a differential spatial use, with 3 patterns: 1) species with homogeneous use (A. clypeata y F. americana), 2) with affinity to a single portion of the wetland (A. p. diazi y O. jamaicensis), and 3) with affinity for both portions of the wetland (L. scolopaceus). The Ciénega de Tláhuac is an important wetland for birds in the region; during the winter 6 species protected by the Mexican Government occur there; however, there are human factors that threaten its integrity, so that protective and conservation actions are necessary.
Moraxella Catarrhalis en tracto respiratorio inferior
Mora Mora,Minor;
Revista Costarricense de Ciencias Médicas , 1998,
Abstract: among 1598 lower respiratory tract samples corresponding to patients admitted at the san juan de dios hospital, san josé, costa rica, between november 1996 and august 1997 (the frecuency of isolation of moraxella catarrhalis) was 4,3%. patients with chronic obstrutive pulmonary disease (copd) had a higher risk of presenting moraxella catarrhalis (p< 0,05) and those 60 or more years of age were more susceptibility to infection. antibiotic susceptible tests were performed for all the strains of moraxella catarrhalis that were obtained and they yielded ad more than 90% susceptibility to amikacin, ampicillin, cefotaxime, cephalothin and chloramphenicol . it was determined that moraxella catarrhalis is not a primary lower respiratory tract infection agent, even though the clinical history of the patient must be considered as an important guide on the isolation of this microorganism and subsequent treatment.
Estudio de la recristalización secundaria en un acero de bajo carbono laminado a alta temperatura
Ramos Escobedo,Gema T; Bueno Tokunaga,Arturo; Rendón García,Nallely M;
Revista Latinoamericana de Metalurgia y Materiales , 2007,
Abstract: durante la inspección de rutina de la microestructura de una lámina de acero de bajo carbono de 1,9 mm de espesor, producida por laminación continua a alta temperatura de un planchón delgado de 50 mm de espesor fabricado por colada continua, se encontró evidencia de la formación de bandas longitudinales superficiales de granos de ferrita anormalmente grandes. el análisis del comportamiento de disolución de fe3c y de la recristalización de la fase a-fe durante tratamientos de recocido permitió descubrir una fuerte decarburización superficial de la lámina. en base a la anterior observación, la presencia de esta inusual microestructura fue atribuida a la deformación, recristalización y crecimiento anormal de grano de la fase a-fe deformada a alta temperatura durante la laminación en caliente y al enfriamiento lento asociado con las altas temperaturas de acabado y enrollado de la cinta de acero. la existencia de bandas superficiales con granos finos y grandes se atribuyó a que la decarburización no fue uniforme en la superficie del planchón o la lámina. en regiones no decarburizadas, la recristalización normal de la austenita entre los pasos de laminación resultó en una microestructura de granos finos de a-fe una vez que se realizó la transformación de fase en el material.
EFFECT OF DENSITY AND NUTRITIONAL QUALITY OF DIET ON SURVIVAL AND GROWTH OF LION S-PAW Lyropecten (Nodipecten) subnodosus SPAT.
Ana Nallely Cer n-Ortiz,Beatriz Cordero,Cecilia Flores-Vergara,Patricia Ascencio-Padilla
Journal of Fisheries International , 2012,
Abstract: The effect of the density and nutritional quality of the diet on the growth and survival of the organism had been evaluated in different species of Mollusk. In bivalve low growth and survival had been registered in high densities of culture and poorer nutritional quality of the diet. The scallop Lyropecten (Nodipecten) subnodosus is an organism with a high commercial value. However, in this species few researches had been performed to evaluate the effect of the density and nutritional quality of the diet on the growth and survival, principally in stages of larvae and spat. The objective in this study was to evaluate the effect of the survival and nutritional quality of the diet on the growth and survival of L. (N.) subnodosus spat. In this study, the results of growth and survival obtained to show significant differences between densities and nutritional quality of the diet. The major results of length, total dry weight, organic content and survival were obtained in the organism cultured in the lowest density and fed with the mixture diet M1 (Pavlova lutheri and Chaetoceros calcitrans). The mixture diet M1 registered the higher content of protein, carbohydrates and polyunsaturated fatty acids. These components had been essential to the growth and survival of the spat stage, due to its high requirements of protein and fatty acids used for the somatic growth. For this reason the high growth and survival were registered in the organism cultured in the lowest density and fed with high protein content and adequate percentages of the polyunsaturated fatty acids (M1).
Growth of Lyropecten (Nodipecten) subnodosus (Sowerby, 1835) spat fed with three microalgae mixtures diets
Ana Nallely Ceron Ortiz,Beatriz Cordero,Bertha O. Arredondo-Vega,Miguel Robles
Journal of Fisheries International , 2012,
Abstract: The culture of the scallop Lyropecten (Nodipecten) subnodosus could be a profitable economic activity, but the knowledges about its nutritional requirements are not enough. This study evaluated the effect of the nutritional quality of three microalgae mixtures diets on the growth of L. (N.) subnodosus during seven weeks (M1: Isochrysis sp. - Pavlova lutheri; M2: Pavlova lutheri - Chaetoceros calcitrans and M3: Chaetoceros calcitrans - Isochrysis sp.). The spat were fed with three microalgae mixtures diets and they were kept at 21 ± 1 oC. The best filtration rates was obtained with an initial algae concentration of 200,000 cell mL-1, at which near total food utilization was achieved; at higher concentrations the spat produced pseudofeces and unconsumed food remained in the vessels after 24 hours. The major increases in growth (73.4 % in length and 57.83 mg of wet weight) were obtained in the spat fed with the diet M2 (P. lutheri and C. calcitrans), in this diet the high protein content (52.17 %) and quantity of the essential fatty acid 20:4n6, 20:5n3 and 22:6n3 were in an appropriate proportion.
Estudio de la recristalización secundaria en un acero de bajo carbono laminado a alta temperatura During the routine inspection of the microstructure of a low carbon steel sheet 1.9 mm of thickness, produced by high temperature rolling of a continuous casting slab, 50 mm thickness, the formation of superficial coarse ferrite grains was observed. A strong decarburization on the surface of the steel
Gema T Ramos Escobedo,Arturo Bueno Tokunaga,Nallely M Rendón García
Revista Latinoamericana de Metalurgia y Materiales , 2007,
Abstract: Durante la inspección de rutina de la microestructura de una lámina de acero de bajo carbono de 1,9 mm de espesor, producida por laminación continua a alta temperatura de un planchón delgado de 50 mm de espesor fabricado por colada continua, se encontró evidencia de la formación de bandas longitudinales superficiales de granos de ferrita anormalmente grandes. El análisis del comportamiento de disolución de Fe3C y de la recristalización de la fase a-Fe durante tratamientos de recocido permitió descubrir una fuerte decarburización superficial de la lámina. En base a la anterior observación, la presencia de esta inusual microestructura fue atribuida a la deformación, recristalización y crecimiento anormal de grano de la fase a-Fe deformada a alta temperatura durante la laminación en caliente y al enfriamiento lento asociado con las altas temperaturas de acabado y enrollado de la cinta de acero. La existencia de bandas superficiales con granos finos y grandes se atribuyó a que la decarburización no fue uniforme en la superficie del planchón o la lámina. En regiones no decarburizadas, la recristalización normal de la austenita entre los pasos de laminación resultó en una microestructura de granos finos de a-Fe una vez que se realizó la transformación de fase en el material.
Moviéndose con la mente y el cuerpo: entendiendo la diferencia entre planear y realizar rutas en el espacio construido
Mora, Rodrigo;
Fractal : Revista de Psicologia , 2010, DOI: 10.1590/S1984-02922010000800011
Abstract: this paper is concerned with route behavior in people. specifically, it aims to better understand whether people follow routes planned in advance, and whether these routes are identical irrespective of the direction of travel. a total of 42 participants (27 belonging to utfsm and 15 from outside) were asked to trace routed between a pair of points in a map of the campus. after that, they were brought to these places and asked to physically navigate these routes. the main results showed that planned routes were not necessarily employed in real-world scenarios, and that people often changed routes depending on the direction of travel. these results suggest that route choice criteria are somehow dependant on contextual information.
Evaluación de los mamógrafos en Costa Rica
Mora,Patricia;
Acta Médica Costarricense , 2005,
Abstract: introduction: due to the increasing incidence of breast cancer in costa rican women, an evaluation of national mamographic equipment was conducted. materials and methods: from june 2002 to october 2003, 2 of the 3 global indicators of image quality were evaluated, (mean glandular dose and phantom image) in 26 mamography machines. results: the mean glandular dose found was 1.7 ± 0.60 mgy with a range of 0.8 a 2.56. regarding quality image, 73% of the evaluated equipment was able to see 4 or more fibers, 53% saw 3 or more groups of microcalcifications and 82% saw 3 or more mass groups. conclusions: all mean glandular doses were below the international reference dose value of 3 mgy. however, the analysis of phantom images showed that only 54% of all the equipment had a total score (sum of mass groups, fibers and microcalcifications) superior or equal to 10, as expected. a correct diagnosis that could eventually save the patient?s life is the main objective of a mammogram; the factors that are degrading the images must be found and it might be necessary to increase the doses to achieve this. this study demonstrates the urgent necessity to introduce permanent quality control programs that will provide excellent images with the lowest internationally recommended doses.
Optimización de la técnica radiográfica del tórax PA
Mora,Patricia;
Acta Médica Costarricense , 2002,
Abstract: objective: low kilovoltages (<100 kvp) to obtain chest films are commonly used in costa rica, regardless of international recommendations. this study aims to demonstrate that at higher kvps the visualization of low contrast objects is improved and that the absorbed doses are lower. methods: two chests films, one at high kvp and one at low kvp, were taken to 11 patients. at the skin of each patient, two tld-100 chips were placed to record the entrance skin doses, the chips were analyzed at the nuclear physics laboratory of the university of costa rica. using the anatomic criteria test tool 28 radiologists compared the anatomic findings for each technique. results: at higher kvps the average entrance skin doses were lower by 40% and the overall contrast of the image was decreased between 10% to 50%. the anatomic criteria test tool gave a total of 448 positive points, showing a clear preference for the high kilovoltaje technique. conclusions: the optimization of chest studies based on the ratio risk versus benefit shows that high kilovoltage techniques should be implemented in our country due to the diminution in the delivered doses and an improved visualization of the anatomy shown in the chest film according to the interpreting radiologists.
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