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Search Results: 1 - 10 of 313742 matches for " Antonio Navío Gámez "
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El resultado de los programas de formación de formadores: análisis comparativo de dos realidades institucionales
Antonio Navío Gámez
PROFESORADO , 2007,
Abstract: La preocupación de la Pedagogía por la formación docente es bien conocida. Como objeto de estudio ha abarcado los distintos niveles y contextos educativos, así como los distintos perfiles docentes que de los mismos se han derivado. Por ello, se han realizado múltiples estudios conducentes a dilucidar en qué medida la formación docente contribuye a mejorar la práctica de los profesionales. Compartiendo esta preocupación por la formación docente y ubicados en el perfil específico del formador que interviene en el campo de la formación para el trabajo, presentamos un estudio sobre los resultados que cuatro programas de formación de formadores tienen en los participantes en el mismo de acuerdo a las opiniones que los propios participantes, los profesores y los directivos de los programas nos plantean.
Funciones y escenarios de actuación del profesor universitario: Apuntes para la definición del perfil basado en competencias
Ruiz Bueno, Carmen;Mas Torelló, óscar;Tejada Fernández, José;Navío Gámez, Antonio;
Revista de la educación superior , 2008,
Abstract: the accelerated changes that our society is living (globalization, technological revolution, multiculturality, uncertainty valuation) are affecting the educative institutions. these social alterations next to the european convergence (european space for higher education and european space of research), the educative paradigm changes (centred in learning), the revisionist moment that the socio-educative institutions are living (new exigencies of quality, effectiveness, efficiency) causes new demands and, in mid term, great amendments at the university. all these changes generate the need to transform the university teacher professional abilities as to go on within the new context.
La didáctica en un entorno virtual interuniversitario: experimentación de ECTS apoyados en TIC
José Tejada Fernández,Antonio Navío Gámez,Carmen Ruiz Bueno
Pixel-Bit , 2007,
Abstract: En el contexto actual de desarrollo tecnológico y de construcción del Espacio Europeo de Educación Superior (EEES), emergen, entre otras igualmente relevantes, las necesidades de adaptación a las nuevas exigencias de trabajo didáctico, de estrategias propiciadas por el propio sistema ECTS. Es decir, la exigencia de experimentar metodologías relacionadas con la implementación inminente de los créditos europeos. En el estudio, realizado sobre la virtualización de determinadas asignaturas del Plan de Estudios de Pedagogía, se presentan varios proyectos individuales que conjuntamente apuestan por la incorporación de las TIC a la docencia como uno de los elementos clave para mejorar el proceso de ense anza-aprendizaje, así como la experimentación de los créditos europeos. En este artículo se presentan los resultados más relevantes de la experimentación realizada en el curso académico 2005-2006, desde la valoración de los actores (profesores y alumnos).
Paradigmas urodinamicos: Desde la teoría fibrilar renacentista, hasta la flujometría-doppler actual
Benítez Navío,Julio; Caballero Gómez,Pilar; Pastor Sánchez,Carlos; Ruiz Martínez,Rafael; Pinardo Zabala,Antonio; Rienda Moreno,Miguel Angel; Catalán Bernardos,Benedicta; Ladrón Gil,Concepción;
Archivos Espa?oles de Urología (Ed. impresa) , 2005, DOI: 10.4321/S0004-06142005000100005
Abstract: to perform a historical introduction and a review of the mathematical model, emphasizing that our mathematical model may be the solution to the viscoelastic model. it is evident that the same experiment has been repeated over half a century, with similar results in all cases. we also show one of the projects we are working on: the electro-vesicogram for the evaluation of the filling phase, and doppler uroflowmetry for the study of the voiding phase. methods: we have chosen and studied in depth the results dr. virseda presents in his thesis of one of the experiments performed in relation to the viscoelastic model. after applying analytical methods we reach a differential equation we suppose defines detrusor behaviour, as it has been explained by the viscoelastic model. the solution of this equation by means of the laplace’s transform enables to obtain the values of the incognitas set by urodynamics. besides, we analyzed the behaviour of solutions′ stability using a matricial method following the lyapunov theory. the former may solve the incognitas for the voiding phase. we used urethral doppler with simultaneous uroflowmetry to obtain the data equations demanded; this is what we named "doppler uroflowmetry". the filling phase was studied by superficial electromiography. we named it "electrovesicogram". we attach images for both doppler wave and electrovesicogram. they both are the projects we are working on. results: currently we can only explain the methodology we are following. indeed, this article is the first of a series in which we aim to explain the methodology we are following in detail: doppler wave capture; mounting process photogram by photogram, and vectorization and cleaning of the wave, either doppler or flow waves; treatment in autocad to obtain the vector; and management of the vector with the matalab software, which gives us the results we are looking for. conclusions: it is intuitive to deduct the usefulness of these methods as not invasive technique
Infección por Papillomavirus en el hombre: Estado actual
Gómez García,I.; Gómez Mampaso,E.; Conde Someso,S.; Maganto Pavón,E.; Navío Ni?o,S.; Allona Almagro,A.;
Actas Urológicas Espa?olas , 2005, DOI: 10.4321/S0210-48062005000400006
Abstract: the virus of the human papiloma (hpv), classically he/she has been related with infections of sexual transmission and processes wicked oncologists of the feminine genital apparatus and with less frequency of the masculine one. the new technical diagnostics, based on molecular biology (by means of polymerase chain reaction), they help to a better epidemic approach, an improvement in the i diagnose viral, and a correct therapeutic focus. the object of this work is to revise the current state of the vph from the points of view etiopatogenics, epidemic, clinical, diagnosis, therapeutic and preservative.
Cómo seleccionar y contratar empresas en el outsourcing utilizando la metodología de números borrosos
Cuauhtémoc Guerrero Dávalos,Antonio Terce?o Gómez
Contaduría y administración , 2012,
Abstract: En este trabajo se propone una metodología de subconjuntos borrosos, en la cual se construye un coeficiente de adecuación con el fin de enfrentar la incertidumbre en la selección de empresas que surge de los contratos de outsourcing. Asimismo, en el artículo se lleva a cabo un análisis sobre algunas de sus potencialidades como estrategia de negocios, la que para muchas empresas es actualmente una de las principales herramientas para establecer ventajas competitivas.
Abundancia de colémbolos (Hexapoda: Collembola) y parámetros edáficos de una selva baja caducifolia
GóMEZ-ANAYA,JOSé ANTONIO; PALACIOS-VARGAS,JOSé G; CASTA?O-MENESES,GABRIELA;
Revista Colombiana de Entomología , 2010,
Abstract: the abundance patterns of leaf litter and soil springtails (hexapoda: collembola) from two hydrological watersheds of the chamela biological statión (ebch, unam) in jalisco, méxico are described and compared based on monthly sampling over one year. this locality, where the dominant vegetatión is tropical dry forest, had an atypically high rainfall during the sampling period, with the greatest amount of rain during january. sampling in both biotopes was random, the areas sampled were of the same size (95 cm2), and these were processed in situ using berlese funnels. in addition, different edaphic characteristics were quantified. the effect of watershed, biotope and seasonality factors on the abundance of collembola families was analysed. using cluster analysis (ca), the faunistic relationships between the assemblages were explored, and using canonical correspondence analysis (cca) the relationships between assemblages and the physico-chemical variables of the soil. a total of 24.253 collembola were obtained, belonging to 13 families. the most abundant were isotomidae, entomobryidae, hypogastruridae and sminthuridae. the ca showed more similarity between biotopes than between hydrological watersheds, while in the cca the most important variable to explain the distributión and abundance of the collembola was humidity.
Abundancia de colémbolos (Hexapoda: Collembola) y parámetros edáficos de una selva baja caducifolia Abundance of springtails (Hexapoda: Collembola) and edaphic parameters from a deciduous dry forest
JOSé ANTONIO GóMEZ-ANAYA,JOSé G PALACIOS-VARGAS,GABRIELA CASTA?O-MENESES
Revista Colombiana de Entomología , 2010,
Abstract: Se describen y comparan los patrones de abundancia de colémbolos de hojarasca y suelo de dos cuencas hidrológicas de la Estació n de Biología Chamela (EBCh, UNAM) en Jalisco, México, con base en colectas mensuales durante un a o. Esta localidad, donde el tipo de vegetación dominante es la selva baja caducifolia, presentó un a o de precipitación pluvial atípico durante los muestreos realizados, con la mayor cantidad de lluvia durante enero. El muestreo de ambos biotopos fue aleatorio, los núcleos fueron de igual tama o (95 cm2) y se procesaron in situ mediante embudos de Berlese. Adicionalmente, se cuantificaron diferentes variables edáficas. Se analizó el efecto de los factores cuenca, biotopo y estacionalidad sobre la abundancia de las familias de Collembola. Mediante análisis de conglomerados (AC) se exploran las relaciones faunísticas entre los ensamblajes, y mediante análisis de correspondencia canónica (ACC), las relaciones entre los ensamblajes y las variables fisicoquímicas del suelo. Se obtuvieron 24.253 colémbolos pertenecientes a trece familias. Las más abundantes fueron Isotomidae, Entomobryidae, Hypogastruridae y Sminthuridae. El AC mostró mayor similitud entre biotopos que entre cuencas, mientras que en el ACC la variable más importante para explicar la distribución y abundancia de los Collembola fue la humedad. The abundance patterns of leaf litter and soil springtails (Hexapoda: Collembola) from two hydrological watersheds of the Chamela Biological Statión (EBCh, UNAM) in Jalisco, México are described and compared based on monthly sampling over one year. This locality, where the dominant vegetatión is tropical dry forest, had an atypically high rainfall during the sampling period, with the greatest amount of rain during January. Sampling in both biotopes was random, the areas sampled were of the same size (95 cm2), and these were processed in situ using Berlese funnels. In addition, different edaphic characteristics were quantified. The effect of watershed, biotope and seasonality factors on the abundance of Collembola families was analysed. Using Cluster Analysis (CA), the faunistic relationships between the assemblages were explored, and using Canonical Correspondence Analysis (CCA) the relationships between assemblages and the physico-chemical variables of the soil. A total of 24.253 Collembola were obtained, belonging to 13 families. The most abundant were Isotomidae, Entomobryidae, Hypogastruridae and Sminthuridae. The CA showed more similarity between biotopes than between hydrological watersheds, while in the CCA the most important
Molecular Characterization, Electrophysiological and Contraceptive Effect of Chilean Latrodectus Venom Caracterización Molecular, Electrofisiológica y Efecto Anticonceptivo del Veneno de Latrodectus Chilena
Patricia Navarrete Gómez,David Orme?o,Antonio Miranda,Raúl Sánchez Gutiérrez
International Journal of Morphology , 2011,
Abstract: Since the 1970s, There have been studies of the venom of Latrodectus sp. spiders, in particular the latrotoxin (LTX) of Latrodectus mactans. Many of the studies were aimed at understanding the action of the venom on the muscular system. Now accepted that LTX is able to generate a calcium-permeable membrane pore and modulate the release of synaptic vesicles that activate a receptor and induce cellular changes. Interestingly, when work began with venom obtained from the Latrodectus sp present in Chile, it generated clinical indications similar to the bite of this spider in another country, with some differences in intensity. The purpose of the first studies was to understand the systemic mechanisms of this venom, and other active compounds were studied for biological interest. It was found that these molecules are capable of causing systemic effects such as changes in muscle contraction; of generating vascular relaxation and synaptic and cellular modulation; and of altering potassium conductance channels. Based on this evidence, we suggested biotechnological applications to characterize low molecular-weight compounds obtained from the Chilean Latrodectus venom and exploring the effects on the electrophysiology in oocytes and neurons, and the contraceptive effect on spermatozoa. Desde los a os 70`, se han realizado estudios con el veneno de ara as Latrodectus sp, en particular la latrotoxina (LTX) de Latrodectus mactans. Muchos de estos estudios estuvieron enfocados a entender la acción del veneno sobre el sistema muscular. Hoy en día es aceptado que la LTX es capaz de generar un poro de membrana permeable a calcio y modular la liberación de vesículas sinápticas que activan un receptor e inducen cambios celulares. Interesantemente, cuando comenzamos a trabajar con el veneno obtenido de Latrodectus sp. presente en Chile, ésto generó indicaciones clínicas similares a la picadura de esta ara a en otros países, con algunas diferencias en su intensidad. El propósito de estos primeros estudios fue entender los mecanismos sistémicos de este veneno y además otros compuestos activos fueron estudiados para interés biológico. Se ha encontrado que estas moléculas son capaces de causar efectos sistémicos así como cambios en la contracción muscular; generar relajación vascular y modulación sináptica y celular; y de alterar los canales de conductancia de potasio. Basados en estas evidencias, nosotros sugerimos usar aplicaciones biotecnológicas para caracterizar los compuestos de bajo peso molecular obtenidos del veneno de Latrodectus Chilena y explorar los efectos sobre
Silver Recovery from Spent Silver Oxide Button Cell by Liquid-Liquid Extraction  [PDF]
Zeferino Gami?o-Arroyo, Antonio Tapia-Cisneros, Osvaldo M. Zamacona-Saucedo, Irene Cano-Rodríguez, Alberto F. Aguilera-Alvarado, Lorena E. Sánchez-Cadena, Fernando I. Gómez-Castro
Journal of Materials Science and Chemical Engineering (MSCE) , 2015, DOI: 10.4236/msce.2015.37020
Abstract:

Button cell batteries are used in clocks, thermometers, remote controls, toys and other devices, and they are usually discarded in the trash once its useful life is over. Some models of these batteries contain silver oxide. In this paper we propose liquid-liquid extraction as separation process to recover the metal. First, silver determination is performed in different models of these batteries and leaching with nitric acid is carried out. Affinity study is done between several commercial extractants for silver. The best performing extractant is the bis(2-ethylhexyl) dithiophosphoric acid (D2EHDTPA). Furthermore, a study of the extraction yields as a function of extractant concentration and time is performed. The distribution isotherm is determined; complex extracted in organic phase and stripping conditions have been identified. With the aim of obtaining industrial application, a number of steps for a countercurrent process were defined by the McCabe-Thiele method. Finally, a study was done in micropilot scale. The results show that it is possible to recover silver from this type of waste.

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