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Search Results: 1 - 10 of 24002 matches for " Rodríguez Machain "
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Eficacia de un programa de intervenciones terapéuticas en estudiantes universitarios diagnosticados con dependencia al alcohol
Alejandro Díaz-Martínez,Leonila Rosa Díaz-Martínez,Ana Carolina Rodríguez-Machain,Adriana Díaz-Anzaldúa
Salud mental , 2011,
Abstract: Introducción: Se ha descrito que entre los estudiantes de educación superior de nuestro país la prevalencia del consumo de alcohol se ha duplicado durante las últimas dos décadas. Se han estimado prevalencias durante los últimos 12 meses del diagnostico de Dependencia al Alcohol (DA) de 4.6%. Aunque se desconoce la magnitud de las consecuencias de estos problemas entre los estudiantes universitarios mexicanos, en Estados Unidos han sido identificados como un problema de salud pública mayor y como el principal problema de salud en las universidades. Para reducir estos problemas, se ha evidenciado que las intervenciones como la Terapia de Incremento de la Motivación (TM) o la Terapia Cognitivo Conductual (TCC) podrían ser igualmente efectivas a largo plazo. Se ha observado una ligera ventaja del formato individual sobre el grupal. Pero al analizar el costo-beneficio, el formato grupal suele ser el más utilizado en las universidades. A pesar de la importancia de los problemas por consumo de alcohol en las universidades y no obstante la efectividad demostrada de estas intervenciones, no hay, hasta lo que sabemos, investigaciones publicadas que comparen la eficacia de la TM y la TCC en el tratamiento de los universitarios con problemas por consumo de alcohol en México o en otros países de habla hispana. Objetivo: Examinar los efectos de las intervenciones TM y TCC tanto en su modalidad individual como grupal, en el tratamiento de estudiantes universitarios con diagnóstico de dependencia al alcohol...
Relación entre el consumo de tabaco, salud mental y malestares físicos en hombres trabajadores de una empresa textil mexicana
Ana Carolina Rodríguez Machain,Nora Angélica Martínez Vélez,Francisco Juárez García,Elsa Karina López Lugo
Salud mental , 2008,
Abstract: El consumo de tabaco es considerado un problema de salud pública en todo el mundo debido a la cantidad de enfermedades y muertes relacionadas con su uso. La Organización Mundial de la Salud (OMS) reporta que 30% de los adultos son fumadores y, de éstos, aproximadamente cinco millones de personas morirán en un a o. También se estima que para 2020 habrá 8.4 millones de muertes anuales por enfermedades relacionadas con el consumo de tabaco, de las cuales siete de cada 10 ocurrirán en países en vías de desarrollo, como México, donde más de 53 mil personas fumadoras mueren al a o por enfermedades asociadas al tabaquismo y al menos 147 personas mueren diariamente. Por otro lado, en la bibliografía se ha encontrado que el da o en el organismo por fumar comienza desde el primer cigarro, que a los 10 a os se presentan síntomas sutiles en la función pulmonar y disminución de la tolerancia al ejercicio, y que es entre 20 y 30 a os después cuando los síntomas hacen a un fumador tomar conciencia del da o a su salud. En cuanto a la relación entre el uso de tabaco y la salud mental, ésta se evidencia por las consecuencias emocionales que conlleva padecer una enfermedad crónica. En este contexto, el objetivo del presente trabajo fue conocer la relación de problemas emocionales y malestares físicos con el consumo de tabaco en hombres trabajadores de una empresa textil mexicana
Relación entre el consumo de tabaco, salud mental y malestares físicos en hombres trabajadores de una empresa textil mexicana
Rodríguez Machain, Ana Carolina;Martínez Vélez, Nora Angélica;Juárez García, Francisco;López Lugo, Elsa Karina;Carre?o García, Silvia;Medina-Mora, María Elena;
Salud mental , 2008,
Abstract: introduction tobacco use is considered a worldwide public health problem because of the amount of death and disease it causes. the who reports that 30% of the adult population in the world are cigarette smokers, and that nearly five million of these will die within one year. prospective studies performed by the who show that if current tobacco use continues, in 2020 there will be 8.4 million deaths due to tobacco-related diseases every year; seven out of 10 of these deaths will occur in emergent countries, like mexico. more than 53000 tobacco users die every year in mexico because of tobacco-related diseases, and at least 147 of these die daily. data from the national addictions survey (nas) 2002 showed that 26.4% of the people between 12 and 65 years old were active tobacco consumers; this amounted to nearly 14 million individuals. of these, 7.1% were under 18 years old. the number of tobacco consumers in mexico has increased from nine million in 1988 to 14 million in 2002. according to the nas, 52% of the users smoke on a daily basis, and 61.4% of them began smoking when they were minors. to know the actual consumption levels, it is important to consider some factors: the number of cigarettes a person smokes, the different situations where a person smokes, and the social and physical consequences of smoking. thus, it would be possible to develop a consumer classification (i. e. soft consumers, mild consumers, and hard consumers). there may be numerous causes for a person to be ill. when speaking about the harmful effects of tobacco use, the literature is clear in stating that these begin with the first cigarette smoked. however, it can take up to 30 years for a consumer to notice the damage on his health after his/her consumption began; but within the first ten years there are problems in lung function and in physical endurance. when a person starts smoking there are acute and unpleasant side effects that are rarely associated with smoked tobacco use. consumption
Methodology and Equations of Mineral Production Forecast
—Part I. Crude Oil in the UK and Gold in Nevada, USA. Prediction of Late Stages of Production
 [PDF]

Sergio Pérez Rodríguez
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.35040
Abstract:

The equations of mineral production forecast link the change in time of mineral reserves with the production and the ratio of reserves to production. These equations allow us to model the development of the mineral resources evaluated at any scale. Probabilistic bidimensional charts made from montecarlo simulations provide intervals of confidence for the forecasts. The set of equations is devised and presented for a variety of applications to the oil and gas industry, as well to the production of any other mineral resource, either metals or non metals, whose ore deposit volumes and production might be quantified. The cases studied in the UK and USA are at late stages of production, periods for what the equations are most suitable to be applied without further adjustments. Experimental design allows the diagnosis of the likely values of the variables pertaining to the equations, in order to achieve the results provided by conventional production forecasts or to explore other scenarios of investigation. The method can be practical to evaluate commitments of production of mineral resources with time, to support strategic plans for companies, corporations, countries or regions based on those evaluations, for the screening and ranking of mineral assets based on their production potential and many other tasks where the prediction of future volumes of mineral production is required.

Methodology and Equations of Mineral Production Forecast. Part II. The Fundamental Equation. Crude Oil Production in USA  [PDF]
Sergio Pérez Rodríguez
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.36044
Abstract:

The fundamental equation of mineral production allows to model and design the dynamics of mineral production, however complex they are or could be. It considers not only the case of a constant production to reserves ratio for given intervals of time, but with a piecewise approach, it is also enabled to account the variation on time of this ratio. With a constant production to reserves ratio, the limit expression of the fundamental equation takes the form of an Erlang distribution with a fixed shape parameter. The rate parameter equals the scale factor. The discrete piecewise version, instead of considering the reserves and the production to reserves ratio being constant through certain intervals of time, updates both variables by units of time. This version, using either lineal or non lineal functions for the variables involved, let to model known production profiles or to forecast them by experimental design. The Hubbert’s linearization updated with recent data and the p-box method applied to determine ultimate recovery of U.S. crude oil reserves indicate official accounts underestimate them. The analysis of the ideal model of production based on Hubbert’s linearization and curve, can be made by decomposing it in the distribution with time of the reserves and of the production to reserves ratio. The distribution of reserves with time is synchronized for both the ideal Hubbert’s curve and real profiles, disregarding whether they match or not. The departure of real profiles from the ideal Hubbert’s curve lies on the differences or correspondences of the distribution with time of the production to reserves ratio. The MonteCarlo simulation applied to forecast US crude oil production for the next five years points to a slow decline, with average annual yields presenting a difference lower than 10% between the start and the end of the simulation.

The Hypothesis of Hyperia from the Perspective of Neuronal Plasticity  [PDF]
Javier álvarez-Rodríguez
Open Journal of Medical Psychology (OJMP) , 2016, DOI: 10.4236/ojmp.2016.51003
Abstract: We analyze certain mental automatisms appearing in the consciousness with phenomenological features of simple partial seizures (SPSs). We propose to include all these phenomena into a cognitive function to which we term hyperia. In this paper, we analyze the similarities between the nature of this cognitive function and the mechanisms used by our brain to elicit neuronal plasticity.
Nutritional Composition of Sea Cucumber Isostichopus sp.  [PDF]
Wensy Vergara, Adriana Rodríguez
Natural Resources (NR) , 2016, DOI: 10.4236/nr.2016.73013
Abstract: The knowledge of the chemical composition of invertebrates as sea cucumber contributes to improving our understanding of these living organisms. This study compared the chemical composition of wild sea cucumber Isostichopus sp., between February 2013 and January 2014. Sea cucumbers were captured by hand by artisanal fishermen and transported alive to the laboratory of Aquaculture of the Universidad del Magdalena (Colombia), where they were subsequently killed and taken to freeze until analysis. For proximate analysis 20 g of muscle were used for each sample. The analysis (in triplicate) was performed according to [1]. Significant differences (p < 0.05) in the protein content, lipids and ash were found. The chemical composition ranged from 2.74% to 6.63% for protein; about 0.07% to 0.35% for lipids; 3.16% to 3.81% for ash; between 83.74% and 86.92% for moisture. Chemical composition of muscle Isostichopus sp. was similar to that reported for fresh sea cucumbers internationally traded, which indicates that it is a species with a competitive commercial value for use in food.
Anthropometric specimens and picturesque curiosities: the photographic orchestration of the “black” body (Brazil, circa 1865)
Rodríguez BE
Revista Ciencias de la Salud , 2012,
Abstract: In Against Race Paul Gilroy writes that the “race producing” activity unleashed in the eighteenth and nineteenth-centuries “required a synthesis of logos with icon, of formal scientific rationality with something else, something visual and aesthetic” (1). During this period, scientific discourses that elaborate the concept of race adopt new technologies, especially photography. In this article, I am particularly interested in analyzing how the “black” body is arranged photographically. I probe some examples taken from the archives collected by the Swiss scientist Louis Agassiz and the photographer Christiano Júnior in mid-19th century Rio de Janeiro. Objective: to question how these visual artifacts contributed to the re-assemblage of racial discourses precisely at the moment when the black body was invested with legal subjectivity
Efecto de la cobertura del suelo con cascarilla de arroz en el crecimiento y rendimiento del tomate de ramillete
Rodríguez Rodríguez,Gisela;
Ciencia e investigación agraria , 2007, DOI: 10.4067/S0718-16202007000300006
Abstract: from the spring to fall of 2005, in northern kanto, located in central japan, an open field was prepared for cultivating cherry tomatoes (lycopersicon esculentum var. cerasiforme) with three types of mulch: 1. rice straw with rice bran, 2. rice straw alone, and 3. polyethylene film covering. the fruits were harvested from june to the end of september. there were significant differences between the treatments in both the total yield of fruit (p = 0.0379) as well as in the yield of normal fruit (p = 0.0458). the highest total fruit production (3.4 kgplant') was obtained with the rice straw and bran treatment, followed by the other two treatments, with about 2.5 kg-plant'. other factors, such as total fruit number and the weight of damaged fruit, were not significantly different. forty days after planting in the field, plant height and other vegetative characteristics were measured; no statistically significant differences between the studied soil treatments were observed. these results indicate that the application of rice bran on a field surface previously covered with rice straw contributed to an increase in the yields of the tomato plants. the application of rice bran also facilitated weed control management
La atención integral centrada en las personas. Principios y criterios que fundamentan un modelo de intervención de discapacidad
Pilar Rodríguez Rodríguez
Palabras Mayores , 2011,
Abstract: Reflexiones sobre el modelo clásico de atención a personas mayores y personas con discapacidad, frente a lo cual se propone y grafica un modelo de atención integral centrado en la persona, en el marco de los cambios sociales, el avance en políticas sociales y en los derechos. http://www.imsersomayores.csic.es/documentos/documentos/pilar-atencion-01.pdf
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