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Search Results: 1 - 10 of 330706 matches for " Jesús Romero Madero "
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PERCEPCION SUBJETIVA DE ADAPTACION AL TURNO LABORAL EN TRABAJADORES CON ULCERA PEPTICA
Romero Madero,Jesús;
Revista Habanera de Ciencias M??dicas , 2007,
Abstract: a mathematical-statistical model was calculated by means of the multivariade discriminant analysis (p <0,05) to a sample of 76 workers, to differentiate the exposed workers and not to night shift work, basing us on the expression of the risk factors related with the gastroduodenal peptic ulcer and the subjetive perception of adaptation to the type of shift work was determinated in comparative form betwen groups. the study design was analytic of traverse court. the instruments applied to explore the factors of risk were: factors of individuality, personality, symptomatic scale of stress, exploration of labor fatigue and labor situation. the analogical-visual scale was applied to evaluate the subjetive perception of adaptation to shift work. the calculated discriminant function had a capacity of prognostic of 86,8% and the subjetive perception of adaptation to shift work was bad in 43,4 % of the sample without any significant differencies betwen groups. this result can constitute a first step in the strategy of prevention of this affection in our workers and keep alert about impact of psicological variables as subjetive perception of adaptation to shift work in that desease.
FACTORES DE RIESGO RELACIONADOS CON LA ULCERA PEPTICA GASTRODUODENAL Y EXPOSICION A NOCTURNIDAD
Romero Madero,Jesús;
Revista Habanera de Ciencias M??dicas , 2007,
Abstract: the risk factors related with the gastroduodenal peptic ulcer were compared in a sample of 76 workers divided in two groups: exposed and not to nigth shift work as well as among the subgrups of the first one. the study design was analytic type of traverse court with a not probabilistic sampling. the test chi-square was applied (alfa>=95%) for the significance of the differences among the groups. the exposed group to night shift work and the subgrup with rotative quick changes shift work they presented bigger incidence of the risk factors for that desease. the night shift work and specifically the workers with rotative quick chances had more appropriated conditions for happening of the gastroduodenal peptic ulcer because the frequency of appearance of the risk factors and they presuppose bigger interaction with circadian rhythm dysruptions.
FACTORES DE RIESGO RELACIONADOS CON LA ULCERA PEPTICA GASTRODUODENAL Y EXPOSICION A NOCTURNIDAD The risk factors related with the gastroduodenal peptic ulcer
Jesús Romero Madero
Revista Habanera de Ciencias M??dicas , 2007,
Abstract: Se compararon los factores de riesgo relacionados con la úlcera péptica gastroduodenal en una muestra de 76 trabajadores, divididos en dos grupos: expuestos y no a nocturnidad; así como entre los subgrupos del primero. El dise o de estudio fue tipo analítico de corte transversal con un muestreo no probabilístico. Se aplicó la prueba Chi cuadrado (alfa > o = 95%) para la significación de las diferencias entre los grupos. E l grupo expuesto a nocturnidad y el subgrupo: rotativo de cambios rápidos, presentaron mayor incidencia de los factores de riesgo de la UPGD. Los turnos de trabajo nocturnos y específicamente los trabajadores con rotación rápida, tuvieron condiciones más propicias para la génesis de la UPGD, por la frecuencia de aparición de los factores de riesgo y presuponen mayor interacción con los trastornos en los ritmos circadianos de sus trabajadores. The risk factors related with the gastroduodenal peptic ulcer were compared in a sample of 76 workers divided in two groups: exposed and not to nigth shift work as well as among the subgrups of the first one. The study design was analytic type of traverse court with a not probabilistic sampling. The test chi-square was applied (alfa > or = 95%) for the significance of the differences among the groups. The exposed group to night shift work and the subgrup with rotative quick changes shift work they presented bigger incidence of the risk factors for that desease. The night shift work and specifically the workers with rotative quick chances had more appropriated conditions for happening of the gastroduodenal peptic ulcer because the frequency of appearance of the risk factors and they presuppose bigger interaction with circadian rhythm dysruptions.
PERCEPCION SUBJETIVA DE ADAPTACION AL TURNO LABORAL EN TRABAJADORES CON ULCERA PEPTICA Subjective perception of adaptation to the labor shift in workers with ulcerates peptic
Jesús Romero Madero
Revista Habanera de Ciencias M??dicas , 2007,
Abstract: Se calculó un modelo matemático-estadístico por medio del análisis multivariado discriminante a una muestra de 76 trabajadores, para diferenciar los trabajadores expuestos y no expuestos a nocturnidad; nos basamos en la expresión de los factores de riesgo relacionados con la úlcera péptica gastroduodenal (p<0,05) y se determinó de forma comparativa entre los grupos la percepción subjetiva de adaptación al turno de trabajo . El dise o de estudio fue analítico de corte transversal. Los instrumentos aplicados para explorar los factores de riesgo fueron: Factores de individualidad, Personalidad, Escala Sintomática de Estrés, Exploración de Fatiga Laboral y Situación Laboral .Se aplicó la Escala Analógico-Visual como instrumento de evaluación de la percepción subjetiva de adaptación al turno de trabajo. La función discriminante calculada tuvo una capacidad de pronóstico de 86,8% y la percepción subjetiva de adaptación al turno de trabajo fue mala en 43,4 % de la muestra, sin diferencias significativas entre los grupos. La capacidad discriminante de este modelo puede constituir un primer paso en la estrategia de prevención de esta afección en nuestros trabajadores y alertarnos acerca del valor que pueden tener variables psicológicas como la percepción subjetiva de adaptación al turno de trabajo en la misma. A mathematical-statistical model was calculated by means of the multivariade discriminant analysis (p <0,05) to a sample of 76 workers, to differentiate the exposed workers and not to night shift work, basing us on the expression of the risk factors related with the gastroduodenal peptic ulcer and the subjetive perception of adaptation to the type of shift work was determinated in comparative form betwen groups. The study design was analytic of traverse court. The instruments applied to explore the factors of risk were: Factors of Individuality, Personality, Symptomatic Scale of Stress, Exploration of Labor Fatigue and Labor Situation. The analogical-visual Scale was applied to evaluate the subjetive perception of adaptation to shift work. The calculated discriminant function had a capacity of prognostic of 86,8% and the subjetive perception of adaptation to shift work was bad in 43,4 % of the sample without any significant differencies betwen groups. This result can constitute a first step in the strategy of prevention of this affection in our workers and keep alert about impact of psicological variables as subjetive perception of adaptation to shift work in that desease.
Evaluation of harrowing intensity on surface crusting on an oxisol of the eastern plains of Colombia: I. Chemical and textural characterization in soil surface Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia: I. Caracterización química y textural en superficie
Galvís Jesús,Amezquita Edgar,Madero Edgar
Acta Agronómica , 2007,
Abstract: A field trial was conducted to evaluate the cumulative effects of fertilization and tilling on corn crop and introduced pasture under no grazing. Changes in soil physical and chemical parameters were evaluated in the first centimeter depth of top soil of field plots that were established in 1995 in Matazul farm located at the east of Puerto Lopez, Meta, Colombia. After eight years of establishment, results showed that corn system significantly improved soil fertility of savanna but soil stabilizer parameters such as organic matter, organic–Fe and fine silt were negatively affected. These effects were more pronounced with harrowing intensity. The system of improved pastures significantly increased soil organic matter and pH but with a tendency to decrease with tilling. These results point out the need for improved pasture phase in the rotation for sustainable land management and agricultural productivity. Se planteó un ensayo de campo para evaluar los efectos acumulados de la fertilización y la labranza en el cultivo de maíz y en pastos sin carga animal. Se evaluaron cambios en parámetros químicos y físicos del suelo en el primer centímetro de suelo de parcelas que se establecieron en 1995 en la finca Matazul, ubicada al este de Puerto López – Meta, Colombia. Al cabo de ocho a os, los resultados indicaron que el sistema de maíz mejoró significativamente la fertilidad de la sabana, pero empeoró parámetros estabilizadores del suelo como materia orgánica, Fe–orgánico y limo fino, y estos efectos se pronunciaron con la intensidad de la labranza. El sistema de pastos mejorados incrementó significativamente la materia orgánica y el pH del suelo, pero con tendencia a disminuir con la labranza. Estos resultados puntualizan la necesidad de considerar una fase de pastos en rotación para mejorar el manejo de la tierra y la sostenibilidad de la producción agrícola.
Evaluation of harrowing intensity on surface crusting on an oxisol of the eastern plains of Colombia: III. Micromorphological characterization in soil surface. Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia: III. Caracterizacion micromorfológica en superficie.
Galvís Jesús,Amézquita Edgar,Madero Edgar
Acta Agronómica , 2008,
Abstract: To understand changes that happened on soil surface under different pasture and corn systems, it was necessary to observe its microstructure using methodologies such as thin soil sections and sweeping electronic microscopy. Important changes in soil fabric were observed under introduced systems compared to native savanna and forest systems. Para entender los cambios que ocurrieron en la superficie del suelo en diferentes sistemas de maíz y pastos se hizo necesario observar su microestructura utilizando metodologías de diversa índole como secciones delgadas y microscopia electrónica de barrido. Se constataron cambios importantes en la fábrica del suelo con los sistemas introducidos comparados con sabana y bosque..
Evaluation of harrowing intensity on surface crusting on an oxisol of the eastern plains of Colombia. II. Physical characterization in soil surface Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia. II. Caracterización física en superficie
Galvís Jesús,Amezquita Edgar,Madero Edgar
Acta Agronómica , 2007,
Abstract: The outlined methodology in this article allowed correlating soil sealing and soil physical properties as structural stability, infiltration velocity, soil loss erosion, run–off, normal and torsion resistance and aggregate distribution. The output showed that improved pastures after eight years of sowing produced a relatively positive response to soil erosion and mechanical strengths. But periodic farming and fertilization that are required for corn production although resulted in good seed bed preparation and created a good environment to store moisture, it allowed an increase of soil erosion and decrease of soil structure stability. La metodología presentada en este artículo permitió correlacionar el sellamiento del suelo y propiedades físicas como estabilidad estructural, velocidad de infiltración, suelo erosionado, escorrentía, resistencia normal y torsional, y distribución de agregados. Los resultados mostraron que los pastos mejorados después de ocho a os de sembrados produjeron una respuesta relativamente positiva del suelo a la erosión y a los esfuerzos mecánicos. Pero la labranza y la fertilización periódicas que demandó la producción de maíz, aunque prepararon relativamente bien la cama de semillas y propiciaron un buen ambiente para el almacenamiento de humedad, permitieron un incremento de la erosión hídrica y un decrecimiento de la estabilidad de la estructura.
Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia: I. Caracterizacion química y textural en superficie
Galvis,Jesús H.; Amézquita,Edgar; Madero M,Edgar;
Acta Agronómica , 2007,
Abstract: a field trial was conducted to evaluate the cumulative effects of fertilization and tilling on corn crop and introduced pasture under no grazing. changes in soil physical and chemical parameters were evaluated in the first centimeter depth of top soil of field plots that were established in 1995 in matazul farm located at the east of puerto lopez, meta, colombia . after eight years of establishment, results showed that corn system significantly improved soil fertility of savanna but soil stabilizer parameters such as organic matter, organic-fe and fine silt were negatively affected. these effects were more pronounced with harrowing intensity. the system of improved pastures significantly increased soil organic matter and ph but with a tendency to decrease with tilling. these results point out the need for improved pasture phase in the rotation for sustainable land management and agricultural productivity.
Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia: III. Caracterizacion micromorfológica en superficie.
Galvis,Jesús H; Amézquita,Edgar; Madero,Edgar;
Acta Agronómica , 2008,
Abstract: to understand changes that happened on soil surface under different pasture and corn systems, it was necessary to observe its microstructure using methodologies such as thin soil sections and sweeping electronic microscopy. important changes in soil fabric were observed under introduced systems compared to native savanna and forest systems.
Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia. II. Caracterización física en superficie
Galvis,Jesús H; Amézquita,Edgar; Madero M,Edgar;
Acta Agronómica , 2007,
Abstract: the outlined methodology in this article allowed correlating soil sealing and soil physical properties as structural stability, infiltration velocity, soil loss erosion, run-off, normal and torsion resistance and aggregate distribution. the output showed that improved pastures after eight years of sowing produced a relatively positive response to soil erosion and mechanical strengths. but periodic farming and fertilization that are required for corn production although resulted in good seed bed preparation and created a good environment to store moisture, it allowed an increase of soil erosion and decrease of soil structure stability.
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