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Search Results: 1 - 10 of 164613 matches for " Vicente Vérez "
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Resonancia magnética nuclear: nuevas aplicaciones en la cuantificación y la evaluación de intermediarios de vacunas basadas en polisacáridos
Raine Garrido,Herman Vélez,Vicente Vérez
Vaccimonitor , 2013,
Abstract: La resonancia magnética nuclear (RMN) constituye una fuerte alternativa para estudios estructurales, evaluación de identidad y cuantificación de ingredientes farmacéuticos activos (IFA). En las dos últimas décadas la aplicación de la resonancia magnética nuclear cuantitativa (RMNc) tuvo un creciente impacto en la cuantificación de compuestos, fundamentalmente orgánicos. Varios resultados obtenidos mediante la RMNc han ido creando un lugar para la técnica en la industria biofarmacéutica. La RMNc incluye experimentos de RMN con algunos parámetros modificados, con el objetivo de obtener se ales cuantificables. Basada en algunos de los reportes más relevantes, la presente revisión aborda algunas de las aplicaciones de la RMN para vacunas basadas en polisacáridos o glicoproteínas. El trabajo hace especial énfasis en detallar algunos aspectos que caracterizan la RMNc, así como sus aplicaciones.
Aprendizaje escolar y obstáculos: estudio de caso de una profesora de ciencias de secundaria
Vázquez-Bernal, Bartolomé;Jiménez-Pérez, Roque;Martos, Matilde;Mellado, Vicente;
Ciência & Educa??o (Bauru) , 2009, DOI: 10.1590/S1516-73132009000100001
Abstract: this article describes a case study of a secondary education science teacher as a part of an investigation-action group. we analyze how reflection and action interact, and the influence on teacher professional development. to undertake this study we have developed a progression hypothesis that we call the complexity hypothesis, which progresses from technical efficiency, passing to interest in practical problems, and to critical awareness. the findings suggested that the teacher's conception is associated with the assimilation of the educational school learning, comprising a hard core of obstacles for her professional development. on the other hand, we also saw the emphasis on her interest in the pupils' difficulties in the learning process. this process indicates the direction of her professional development for more complex theories on the matter, as well as the fundamental importance of the support of the investigation-action group.
Homicidio por estrangulación a lazo: A propósito de un caso
Navarro Escayola,E.; Pérez Pujol,E.; Alvarez Domínguez,V.; Sarabia Vicente,J.;
Cuadernos de Medicina Forense , 2004, DOI: 10.4321/S1135-76062004000200001
Abstract: many times we have difficulties in establishing in a conclusive way the diagnostic difference between hanging and strangulation with a rope. in this case we expound a typical case of strangulation with rope.
Programa CROPWAT para planeación y manejo del recurso hídrico
Arteaga Ramírez, Ramón;ángeles Montiel, Vicente;Vázquez Pe?a, Mario Alberto;
Revista mexicana de ciencias agrícolas , 2011,
Abstract: in mexico surface under irrigation is 6.1 million hectares and in more than 90% irrigation system is by gravity, having low efficiency in water use, reason why is important to have computer software that help professionals in management and handling of irrigation water. objectives of this work were: to define different methods of cropwat software and to indicate data need, to carry out simulation in sugar cane with different frequency options and irrigation application, to make irrigation schedule for cultivation plan of irrigation module iii-1 from irrigation district 035, at antigua-actopan, veracruz and to define if needs of water calculated for cultivation plan are satisfied with water availability that has. methods of cropwat determine: reference evapotranspiration (et0), water needs of cultivations, effective precipitation and irrigation needs; also irrigation calendar is based on a daily balance of soil humidity with several options of water application and conditions of irrigation handling for cultivations pattern and irrigation schedule. it was determined that water availability of irrigation module iii-1 satisfies, together with precipitation, water needs of cultivations plan for agricultural year 2005-2006 in most of the months, except for october.
Science’s Education and Teaching. A case of study about of a Secundary’s Sciences teacher
Bartolomé Vázquez Bernal,Roque Jiménez Pérez,Vicente Mellado Jiménez,Matilde Martos Carrasco
Revista Electronica Interuniversitaria de Formación del Profesorado , 2009,
Abstract: This article shows the conclusions of an investigation plan which was showed in the Human Sciences Facultity and Education of Huesca, in the election of assistances for the realisation of the Act of Improvement Program of Education, with the tittle of "School Practices I, II and III from the view of the credits ECTS.One of the main aims of this project was to know the attitude of the University teachers before the school practices course, that is why we did a cuestionary to a big number of partners of Faculty Education of Huesca, Zaragoza and Teruel, with the purpose that they could transmit us their thougths and to be able to offer a solution to elaborate and develop the new plans of teacher degree, specially, refered to practicum.
"Enfermedad de las tres mentiras": síndrome de la úlcera rectal solitaria A disease of three lies: solitary rectal ulcer syndrome
L. Crespo Pérez,V. Moreira Vicente,C. Redondo Verge,A. López San Román
Revista Espa?ola de Enfermedades Digestivas , 2007,
Abstract: El síndrome de la úlcera rectal solitaria es una entidad benigna poco común cuyos síntomas más frecuentes son la rectorragia y el dolor anal. Los hallazgos anatomopatológicos son típicos. Se suele evidenciar engrosamiento de la mucosa, elongación y distorsión de las glándulas, una lámina propia edematosa con gran cantidad de colágena y engrosamiento de la muscularis mucosae. El diagnóstico se realiza mediante endoscopia con toma de biopsias. No siempre se trata de lesiones ulceradas. Se suele localizar preferentemente en la cara rectal anterior y/o lateral, aunque hasta un 30% de las lesiones son múltiples, existiendo casos de afectación del colon sigmoide y descendente. Por tanto, la presentación puede ser heterogénea y este es el motivo por el que esta entidad es también conocida como la "enfermedad de las tres mentiras". Presentamos un caso de síndrome de la ulcera rectal solitaria manifestado endoscópicamente como una placa eritematosa localizada en la cara lateral izquierda del recto. Solitary rectal ulcer syndrome is an uncommon benign condition characterized by rectal bleeding, passage of mucus, and pain. Histological features are well established as obliteration of the lamina propria by fibrosis and smooth-muscle fibers extending from a thickened muscularis mucosa to the lumen. Diagnosis can usually be made on sigmoidoscopy, and biopsies should always be taken. Ulceration is not universally present, and polypoid, non-ulcerated lesions and erythematous areas are also seen. The lesion or lesions are most often found on the anterior or anterolateral wall of the rectum, although they can also be located in the left colon and be more extensive or even circumferential. Lesions are multiple in 30 percent of cases. These are the reasons why this entity is also known as "the disease of three lies". We report a case of solitary rectal ulcer syndrome presenting at endoscopy with an erythematous area on the left side wall of the rectum.
Programa CROPWAT para planeación y manejo del recurso hídrico CROPWAT software for scheduling and handling hidric resource
Ramón Arteaga Ramírez,Vicente ángeles Montiel,Mario Alberto Vázquez Pe?a
Revista mexicana de ciencias agrícolas , 2011,
Abstract: La superficie bajo riego en México es de 6.1 millones de hectáreas y más de 90% utiliza el sistema de riego por gravedad, éste presenta una baja eficiencia en el uso del agua, por lo cual es importante contar con programas de cómputo que auxilien a los profesionales en la administración y el manejo del agua de riego. Los objetivos de este trabajo fueron: definir los diferentes métodos del programa CROPWAT e indicar que datos necesitan, realizar una simulación en ca a de azúcar con diferentes opciones de frecuencia y aplicación del riego, hacer la programación de riego para el plan de cultivos del módulo de riego III-1 del Distrito de Riego 035, la Antigua-Actopan, Veracruz y definir si las necesidades de agua calculadas para el plan de cultivos, son satisfechas con la disponibilidad de agua con que cuenta. Los métodos del CROPWAT determinan: la evapotranspiración de referencia (ET0), necesidades de agua de los cultivos, precipitación efectiva y necesidades de riego; además el calendario de riego se basa en un balance diario de humedad del suelo con varias opciones de aplicación del agua y condiciones de manejo del riego de un patrón de cultivos y la programación del riego. Se determinó que la disponibilidad de agua del módulo de riego III-1 satisface conjuntamente con la precipitación las necesidades de agua del plan de cultivos del a o agrícola 2005-2006 en la mayoría de los meses, el mes de octubre fue la excepción. In Mexico surface under irrigation is 6.1 million hectares and in more than 90% irrigation system is by gravity, having low efficiency in water use, reason why is important to have computer software that help professionals in management and handling of irrigation water. Objectives of this work were: to define different methods of CROPWAT software and to indicate data need, to carry out simulation in sugar cane with different frequency options and irrigation application, to make irrigation schedule for cultivation plan of irrigation module III-1 from Irrigation District 035, at Antigua-Actopan, Veracruz and to define if needs of water calculated for cultivation plan are satisfied with water availability that has. Methods of CROPWAT determine: reference evapotranspiration (ET0), water needs of cultivations, effective precipitation and irrigation needs; also irrigation calendar is based on a daily balance of soil humidity with several options of water application and conditions of irrigation handling for cultivations pattern and irrigation schedule. It was determined that water availability of irrigation module III-1 satisfies, together with
Homicidio por estrangulación a lazo: A propósito de un caso Homicide by strangulation with a rope: A case at point
E. Navarro Escayola,E. Pérez Pujol,V. Alvarez Domínguez,J. Sarabia Vicente
Cuadernos de Medicina Forense , 2004,
Abstract: En algunas ocasiones se plantean dificultades para establecer de forma concluyente el diagnóstico diferencial entre ahorcadura y estrangulación a lazo. En el presente trabajo exponemos un caso típico de estrangulación a lazo. Many times we have difficulties in establishing in a conclusive way the diagnostic difference between hanging and strangulation with a rope. In this case we expound a typical case of strangulation with rope.
How can we carry out an action-research to improve practice in the science classroom?
Bartolomé Vázquez Bernal,Roque Jiménez-Pérez,Vicente Mellado Jiménez
Investiga??es em Ensino de Ciências , 2008,
Abstract: The work describes a program of action-research carried out with secondary education science teachers. The program persues the professional development through the curricular innovation, taking as promotional agent the action-oriented reflection, lending itself special attention to the socialization of the teachers. Throughout two school years actions directed to such effects were taken, organizing themselves through pedagogical content knowledge. The results show that the teachers, in a slow and gradual form, are incorporating new practical theories to their reflections and work in the classroom.
Robust Solutions to Multi-Objective Linear Programs with Uncertain Data
M. A. Goberna,V. Jeyakumar,G. Li,J. Vicente-Pérez
Mathematics , 2014,
Abstract: In this paper we examine multi-objective linear programming problems in the face of data uncertainty both in the objective function and the constraints. First, we derive a formula for radius of robust feasibility guaranteeing constraint feasibility for all possible uncertainties within a specified uncertainty set under affine data parametrization. We then present a complete characterization of robust weakly effcient solutions that are immunized against rank one objective matrix data uncertainty. We also provide classes of commonly used constraint data uncertainty sets under which a robust feasible solution of an uncertain multi-objective linear program can be numerically checked whether or not it is a robust weakly efficient solution.
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