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Search Results: 1 - 10 of 51529 matches for " Carlos Puerto "
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Modelo de pez cebra y peque as moléculas heterocíclicas actualidades y futuro
Carlos E. Puerto-Galvis,Vladimir V. Kouznetsov
Actualidades Biológicas , 2012,
Abstract:
Biosafety evaluation of the DNA extraction protocol for Mycobacterium tuberculosis complex species, as implemented at the Instituto Nacional de Salud, Colombia
Castro,Claudia; González,Liliana; Rozo,Juan Carlos; Puerto,Gloria; Ribón,Wellman;
Biomédica , 2009,
Abstract: introduction. manipulating mycobacterium tuberculosis clinical specimens and cultures represents a risk factor for laboratory personnel. one of the processes that requires high concentrations of microorganisms is dna extraction for molecular procedures. pulmonary tuberculosis cases have occurred among professionals in charge of molecular procedures that require manipulation of massive quantities of microorganisms. this has prompted research studies on biosafety aspects of extraction protocols; however, as yet, no consensus has been reached regarding risks associated with the process. objective. the biosafety was evaluated for the dna extraction protocol of van soolingen, et al. 2002 by determining m. tuberculosis viability at each process stage. materials and methods. eight hundred eighty cultures were grown from 220 m. tuberculosis clinical isolates that had been processed through the first three dna extraction stages. molecular identifications of positive cultures used a pcr isolation of a fragment of the heat shock protein pra-hsp65 and examination of its restriction enzyme profile (spoligotyping). results. growth was seen in one culture with one of the procedures used. the molecular characterization did not correspond to the initially analyzed isolate, and therefore was deduced to be the product of a cross-contamination. conclusion. the dna extraction protocol, as described by van soolingen, et al. 2002 and as implemented at the instituto nacional de salud, was established to be safe for laboratory personnel as well as for the environment.
Modelado y Simulación de la Actividad Eléctrica de Células Ventriculares
Cardona,Karen; Saiz,Javier; de Loma,José María; Puerto,Gustavo; Suárez,Carlos;
Revista Facultad de Ingeniería Universidad de Antioquia , 2008,
Abstract: in order to simulate the guinea pig ventricular action potential we used the mathematical model developed by luo and rudy. this model contains 22 ionic channels represented by non linear differential equations. the mathematical models give us a tool to demonstrate through the simulation, how the (basic cycle length) bcl changes the normal value of vmax and the action potential duration (apd).
Arquitectura y prestaciones de un router de conmutación de paquetes ópticos para las futuras redes de Internet
Puerto Leguizamón,Gustavo; Ortega,Beatriz; Capmany,José; Suárez Fajardo,Carlos;
Revista Facultad de Ingeniería Universidad de Antioquia , 2010,
Abstract: this paper describes the architecture, operation and performance of an optical packet switching node prototype with 2 wavelength/channels and label swapping capabilities. also, the main subsystems of the node to route and forward optical packets at 10 gb/s nrz based on the155 mb/s 18ghz- scm encoded label are described.
Factores de riesgo de cáncer pulmonar en Ciudad de La Habana
Molina Esquivel,Enrique; Barceló Pérez,Carlos; Bonito Lara,Luis Antonio; del Puerto Quintana,Conrado;
Revista Cubana de Higiene y Epidemiolog?-a , 1996,
Abstract: it was conducted a study of cases and controls which included 1 060 patients with lung cancer reported to the national register of cancer from 1987 to 1988, and the same number of controls matched by sex, age, and place of residence. a survey was done aimed at knowing about smoking and occupational exposure to inhalation of cancerigenic agents, as well as about place of residence, type of fuel, and location of the cooker in the house during the last 40 years. the evaluation of environmental pollution at each municipality of the capital was carried out by using the "scale and weight" technique, considering the determined pollution level, the average fulfillment of the sanitary protection ratios of the stationary sources, the main character of the territory, the development of the system of public reads, and the character of the territory windward. the analysis of associations was made by conditioned multiple logistic regression. the ratios of disparity adjusted to the variables and interactions among them were calculated, as well as the corresponding intervals of confidence at 95 %. the results showed the following associations for both sexes: very strong with smoking habit and its intensity, and of less magnitude with the residence predominating in the zones of the capital with higher indexes of exposure to environmental pollution (significant in men), with the location of the cooker in a room for common use, and with the use of kerosene as fuel (no significant), there is a possible synergic effect between both variables, which is stronger among women.
Evolución de las redes de datos: Hacia una plataforma de comunicaciones completamente óptica
Puerto Leguizamón,Gustavo; Ortega,Beatriz; Capmany,José; Cardona Urrego,Karen; Suárez Fajardo,Carlos;
Revista Facultad de Ingeniería Universidad de Antioquia , 2008,
Abstract: an introduction to optical networks in which the evolution undergone by such networks is presented in order to manage the future demand on the transport of ip traffic is described. this evolution has been boosted by the deployment of all optical devices featuring all optical processing capabilities. similarly, an all optical packet router is presented based on the label swapping paradigm with the ability to route and forward ip packets at 10 gb/s. the proposed router is able to process variable length packets and its performance is experimentally verified.
Factores de riesgo de cáncer pulmonar en Ciudad de La Habana
Enrique Molina Esquivel,Carlos Barceló Pérez,Luis Antonio Bonito Lara,Conrado del Puerto Quintana
Revista Cubana de Higiene y Epidemiología , 1996,
Abstract: Se realizó un estudio de casos y controles, que incluyó 1 060 casos de pacientes con cáncer de pulmón reportados al Registro Nacional del Cáncer en el período comprendido entre 1987 y 1988, con residencia en Ciudad de La Habana, e igual número de controles, apareados por sexo, edad y lugar de residencia actual. Se les aplicó una encuesta con el objeto de conocer los antecedentes relativos a la historia de tabaquismo, de exposición ocupacional a la inhalación de agentes cancerígenos, así como lugares de residencia, tipo de combustible y ubicación de la cocina en el hogar predominantes en los últimos 40 a os. La evaluación de la contaminación atmosférica de cada municipio de la capital se realizó mediante la técnica de "escala y peso", considerando el nivel de contaminación determinado, cumplimiento promedio de los radios de protección sanitaria de las fuentes estacionarias, el carácter principal del territorio, el desarrollo de la red vial y el carácter del territorio a barlovento. El análisis de las asociaciones se realizó mediante regresión logística múltiple condicionada, se calcularon las razones de disparidad ajustadas de las variables e interacciones entre éstas y los correspondientes intervalos de confianza al 95 %. Los resultados mostraron las siguientes asociaciones para ambos sexos: muy fuertes con el hábito de fumar y la intensidad de éste y de menor magnitud con la residencia predominante en las zonas de la capital con mayores índices de exposición a la contaminación atmosférica (significativa en los hombres), con la ubicación de la cocina en habitación de uso común y con el uso de querosén como combustible (no significativas), con un posible efecto sinérgico entre ambas variables, con mayor fortaleza en las mujeres. It was conducted a study of cases and controls which included 1 060 patients with lung cancer reported to the National Register of Cancer from 1987 to 1988, and the same number of controls matched by sex, age, and place of residence. A survey was done aimed at knowing about smoking and occupational exposure to inhalation of cancerigenic agents, as well as about place of residence, type of fuel, and location of the cooker in the house during the last 40 years. The evaluation of environmental pollution at each municipality of the capital was carried out by using the "scale and weight" technique, considering the determined pollution level, the average fulfillment of the sanitary protection ratios of the stationary sources, the main character of the territory, the development of the system of public reads, and the character of the te
Histiocitosis de células de Langerhans: Diagnóstico por biopsia transbronquial
Pedro Pablo Pino Alfonso,Carlos Gassiot Nu?o,Isidoro A Páez Prats,Isidro Machado Puerto
Revista Cubana de Medicina , 2000,
Abstract: Se presentó el caso de una paciente de 30 a os de edad, fumadora, raza blanca, con manifestaciones respiratorias de tos seca, molestias precordiales, disnea de esfuerzo y rayos X de tórax con imágenes retículo nodulillares en ambos campos pulmonares. Se le realizó biopsia transbronquial y se le diagnosticó una histiocitosis de células de Langerhans pulmonar We presented the case of a female white patient of 30 years of age and smoker, who had respiratory manifestations as non-productive cough, precordial pain, labored dyspnea. Her thorax X ray showed reticulo-nodullary images in both pulmonary fields. She was applied a transbronchial biopsy and diagnosed with pulmonary Langerhans-cell histiocytosis
Actividad citotóxica de híbridos de la combretastatina A4
Julieth Correa-Royero,Carlos Puerto,Vladimir Kouznetsov,Mauricio Rojas-López
Actualidades Biológicas , 2012,
Abstract:
Hamartoma endobronquial: Presentación de1 caso
Pedro Pablo Pino Alfonso,Carlos Gassiot Nu?o,Luis Toledo Sosa,Isidro Machado Puerto
Revista Cubana de Medicina , 2001,
Abstract: Se presentó el caso de un paciente de 51 a os de edad, exfumador, de la raza blanca, que consulta por episodios de tos pertinaz y radiopacidad en base pulmonar derecha en el rayos X de tórax, que se interpreta como proceso neumónico en varias ocasiones. Se le realizó estudio endoscópico y se detectó una tumoración endobronquial de posible causa benigna. Se intervino quirúrgicamente y la lesión resultó ser un hamartoma endobronquial. Dicho proceder resultó ser curativo The case of a 51-year-old white patient, exsmoker, who is attended at the physician's office due to bouts of persistent cough and to radio-opacity on the right pulmonary base detected in the chest X rays that is interpreted as a pneumonic process on various ocassions, is presented. An endoscopic study was conducted and an endobronchial tumor of possible bening cause was found. He underwent surgery and the lesion proved to be an endobroncial hamartoma. This procedure was curative
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