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Search Results: 1 - 10 of 331223 matches for " Jesús Peralta-Romero "
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Adiponectin in eutrophic and obese children as a biomarker to predict metabolic syndrome and each of its components
Miguel Klünder-Klünder, Samuel Flores-Huerta, Rebeca García-Macedo, Jesús Peralta-Romero, Miguel Cruz
BMC Public Health , 2013, DOI: 10.1186/1471-2458-13-88
Abstract: A cross sectional study was conducted in 190 school-age children classified as obese and 196 classified as eutrophic. Adiponectin, glucose, insulin, high density lipoprotein cholesterol (HDL-C) and triglycerides were determined from a fasting blood sample. Height, weight, waist circumference, systolic and diastolic blood pressures (BP) were measured; MetS was evaluated with the IDF definition. The study groups were divided according to tertiles of adiponectin, using the higher concentration as a reference. Linear regression analysis was used to assess the association between adiponectin and components of the MetS. Finally, stepwise forward multiple logistic regression analysis controlling for age, gender, basal HOMA-IR values and BMI was performed to determine the odds ratio of developing MetS according to adiponectin tertiles.Anthropometric and metabolic measurements were statistically different between eutrophic and obese children with and without MetS (P <0.001). The prevalence of MetS in obese populations was 13%. Adiponectin concentrations were 15.5?±?6.1, 12.0?±?4.8, 12.4?±?4.9 and 9.4?±?2.8 μg/mL for eutrophic and obese subjects, obese without MetS, and obese with MetS, respectively (P <0.001). Obese children with low values of adiponectin exhibited a higher frequency of MetS components: abdominal obesity, 49%; high systolic BP, 3%; high diastolic BP, 2%; impaired fasting glucose, 17%; hypertriglyceridemia, 31%; and low HDL-C values, 42%. Adjusted odds ratio of presenting MetS according to adiponectin categories was 10.9 (95% CI 2.05; 48.16) when the first tertile was compared with the third.In this sample of eutrophic and obese Mexican children we found that adiponectin concentrations and MetS components have an inversely proportional relationship, which supports the idea that this hormone could be a biomarker for identifying individuals with risk of developing MetS.During the last three decades, obesity has emerged worldwide as an epidemic affecting all age
Synthesis and Structural Characterization of Hydroxyapatite-Wollastonite Biocomposites, Produced by an Alternative Sol-Gel Route  [PDF]
Martín A. Encinas-Romero, Jesús Peralta-Haley, Jesús L. Valenzuela-García, Felipe F. Castillón-Barraza
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2013, DOI: 10.4236/jbnb.2013.44041
Abstract:

Hydroxyapatite is a type of calcium phosphate-based material with great interest for biomedical applications, due to the chemical similarity between this material and the mineral part of human bone. However, synthetic hydroxyapatite is essentially brittle; the practice indicates that the use of hydroxyapatite without additives for implant production is not efficient, due to its low strength parameters. In the present work, biocomposites of hydroxyapatite-wollastonite were synthesized by an alternative sol-gel route, using calcium nitrate and ammonium phosphate as precursors of hydroxyapatite, and high purity natural wollastonite was added in ratios of 20, 50 and 80 percent by weight immersed in aqueous medium. Formation of hydroxyapatite occurs at a relatively low temperature of about 350?C, while the wollastonite remains unreacted. After that, these biocomposites were sintered at 1200?C for 5 h to produce dense materials. The characterization techniques demonstrated the presence of hydroxyapatite and wollastonite as unique phases in all products.

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.
El Problema de la Vivienda en el Perú, Retos y Perspectivas
Jesús Quispe Romero
Revista INVI , 2005,
Abstract: En el Perú, la necesidad de mejoramiento de la vivienda, elllamado déficit cualitativo, es un elemento sustancial delproblema de la vivienda, afectando al 74 por ciento de lapoblación. Es decir, en una gran mayoría de casos lasviviendas ya existen pero las condiciones de habitabilidad soninadecuadas. El presente artículo analiza en qué medida lasactuales políticas de vivienda afrontan esta problemática.Interesa conocer los programas y proyectos en curso, suscaracterísticas y sus condiciones financieras, entre otrosfactores. Así mismo, las estrategias de intervención tanto enmateria de vivienda como en la dotación de servicios yequipamiento público. Y se analizan por último, lasalternativas levantadas desde la sociedad civil y lasposibilidades de su implementación para afrontar laproblemática a la que hemos hecho referencia.
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.
Dos nuevos registros de géneros de Bruchidae (Insecta: Coleoptera) para México
ROMERO NáPOLES, Jesús;
Acta zoológica mexicana , 2009,
Abstract: for the first time the bruchidae genera speciomerus nilsson, 1993 and stylosanthes bridwell, 1946 are reported from mexico. geographical distribution and host plant information are given for both genera.
DOS NUEVOS REGISTROS DE GéNEROS DE BRUCHIDAE (INSECTA: COLEOPTERA) PARA MéXICO
Jesús ROMERO NáPOLES
Acta zoológica mexicana , 2009,
Abstract: For the first time the Bruchidae genera Speciomerus Nilsson, 1993 and Stylosanthes Bridwell, 1946 are reported from Mexico. Geographical distribution and host plant information are given for both genera.
Tecnología y discurso político. Estudio empírico del determinismo tecnológico en la retórica política
Jesús Romero Mo?ivas
Revista de Investigaciones Políticas y Sociológicas (RIPS) , 2011,
Abstract: Este artículo trata de indagar de qué manera la retórica política construye, alimenta y sostiene una imagen de las relaciones entre la tecnología y la sociedad que puede considerarse esencialmente determinista. Así, la política crea una imagen de la tecnología como agente resolutivo de problemas sociales, políticos, ideológicos e históricos. Para mostrar esto se recurre al análisis cuantitativo y cualitativo de los mensajes políticos, especialmente los que se contienen en los programas electorales, tratando con ello de reconstruir la visión de la tecnología que subyace al discurso político.
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