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248.402  Articles
1 of 24.841 pages  |  10  records  |  more records»
The coupling between dark energy and dark matter provides a possible approach to mitigate the coincidence problem of the cosmological standard model. In this paper, we assumed the interacting term was related to the Hubble parameter, energy density of dar... see more

Students' competency is a critical concern in health sciences education. Therefore, work-integrated learning has become an integral part of health sciences programmes at higher education institutions. This study explored students' views and experiences of... see more

The latest advancements in the field of computational techniques and big data analytics (BDA) are very helpful in dealing with the spread of coronavirus disease 2019 (COVID-19). The objective of this study was to systematically review BDA applications tha... see more

One of the determinants of the quality of magnetic data is continuous data, so we need a data transmission system that can continuously transmit observational data. In this research, a magnetometer communication system design was carried out with the conc... see more

Physics is an aspect of science that is essential for the scientific development of any nation, but the performance of students in the subject remains a concern for physics educators. Observational learning is one way of enhancing performance. This study ... see more

Physics is an aspect of science that is essential for the scientific development of any nation, but the performance of students in the subject remains a concern for physics educators. Observational learning is one way of enhancing performance. This study ... see more

La actividad física y el riesgo cardiovascular en la comunidad “Orlando Nodarse” del municipio Mariel / Physical activity and cardiovascular risk in the community “Orlando Nodarse” of Mariel municipality La actividad física y el riesgo cardiovascular en la comunidad “Orlando Nodarse” del municipio Mariel / Physical activity and cardiovascular risk in the community “Orlando Nodarse” of Mariel municipalityObjetivo: describir los factores de riesgo cardiovascular y el grado de asociación entre la inactividad física y el riesgo cardiovascular global estimado.Materiales y Métodos: se realizó un estudio explicativo de observacional de casos y controles, entre enero ynoviembre del 2017, en la comunidad “Orlando Nodarse”. Se trabajó una población de 488 individuos con edades entre 50 y 69 años, se obtuvo una muestra de 224 pacientes. Fue aplicado como método teórico el análisis documental y como métodos empíricos sendos cuestionarios para obtener datos relativos a la existencia de factores de riesgo y elnivel de actividad física, mediciones antropométricas, de presión arterial y determinaciones de glicemia y colesterol total. La estimación del riesgo cardiovascular se realizó utilizando las tablas de riesgo de la OMS/ISH. La variable de independencia fue el nivel de inactividad física, como variable de respuesta el riesgo cardiovascular global. Fue utilizado para determinar la asociación de variables el coeficiente de contingencia, con un nivel de significación estadística de 0,05.Resultados: se demostró alta prevalencia de factores de riesgo cardiovascular y la asociación entre el bajo nivel de actividad física y el riesgo cardiovascular global.Conclusiones: existe asociación entre el bajo nivel de actividad física y el riesgo cardiovascular elevado; fueron elconsumo de tabaco y la hipertensión arterial los factores de riesgo cardiovascular más frecuentes.ABSTRACTObjective: to describe the cardiovascular risk factors and the degree of association between physical inactivity and the estimated global cardiovascular risk. Materials and Methods: an observational observational study of cases and controls was conducted between January and November 2017, in the “Orlando Nodarse” community. A population of 488 individuals aged between 50 and 69 years was studied, a sample of 224 patients was obtained. The documentary analysis was applied as a theoretical method and as empirical methods two questionnaires to obtain data related to the existence of risk factors and the level of physical activity, anthropometric measurements, blood pressure and determinations of glycemia and total cholesterol. The estimation of cardiovascular risk was performed using the WHO / ISH risk tables. The independence variable was the level of physical inactivity, as a response variable the global cardiovascular risk. Force used to determine the association of variables the coefficient of contingency, with a level of statistical significance of 0.05.Results: high prevalence of cardiovascular risk factors and the association between low level of physical activity and global cardiovascular risk were demonstrated.Conclusions: there is an association between low level of physical activity and high cardiovascular risk; tobacco consumption and high blood pressure were the most frequent cardiovascular risk factors.Keywords: cadiovascular risk; cardiovascular disease; cardiovascular prevention; physical activity.

Materiales y Métodos: se realizó un estudio explicativo de observacional de casos y controles, entre enero ynoviembre del 2017, en la comunidad “Orlando Nodarse”. Se trabajó una población de 488 individuos con edades entre 50 y 69 años, se obtuvo una mues... see more

Caracterización de la incidencia de las intoxicaciones por metales en Cuba reportadas al centro nacional de toxicología. 2005-2014 / Characterization of the incidence of the intoxications by metals in cuba reported to the National Center Of Toxicology. 20 Caracterización de la incidencia de las intoxicaciones por metales en Cuba reportadas al centro nacional de toxicología. 2005-2014 / Characterization of the incidence of the intoxications by metals in cuba reported to the National Center Of Toxicology. 20Objetivo: caracterizar las intoxicaciones por metales según reportes al Centro Nacional de Toxicología.Materiales y Métodos: se realizó un estudio descriptivo, observacional y longitudinal de tipo retrospectivo en el período comprendido entre 2005-2014. El universo estuvo conformado por 403 pacientes sintomáticos o no, expuestos a metales, según consultas al Centro Nacional de Toxicología y la muestra por 207 pacientes que desarrollaronmanifestaciones clínicas.Resultados: de los 207 pacientes la mayor incidencia de intoxicaciones por metales fue provocada por plomo en el período de estudio. En más de la mitad de los casos intoxicados por metales la evolución fue mejorada, aunque no se usó antídoto. El grupo de edad de 0 a 14 años fue el más afectado.Conclusiones: el estudio concluye con una propuesta de diagnóstico y tratamiento para las intoxicaciones por los metales: plomo, mercurio, arsénico y cobre.Characterization of the incidence of the intoxications by metals in cuba reported to theNational Center Of Toxicology. 2005-2014ABSTRACTObjective: to characterize intoxications by metals according to reports to the National Center of Toxicology.Method: a retrospective descriptive, observational and longitudinal study was carried out in the period from 2005-2014. The universe consisted of 403 symptomatic patients or not, exposed to metals, according to the National Toxicology Center and the sample by 207 patients who developed clinical manifestations.Materials and methods: a bibliographic review was carried out in different databases such as: Ebsco, Cumed, Google Académico, Redalyc, as well as in the Library and the Statistics Department of the National Center of Toxicology (CENATOX). The data was obtained by emptying the Model 03.Results: of the 207 patients, the highest incidence of metal poisoning was caused by lead in the study period. In more than half of the cases poisoned by metals, the evolution was improved, although no antidote was used. The age groupfrom 0 to 14 years old was the most affected.Conclusions: the study concludes with a proposal for diagnosis and treatment for poisoning by metals: lead, mercury, arsenic and copper.Keywords: metals; heavy metals; poisonous.

Materiales y Métodos: se realizó un estudio descriptivo, observacional y longitudinal de tipo retrospectivo en el período comprendido entre 2005-2014. El universo estuvo conformado por 403 pacientes sintomáticos o no, expuestos a metales, según consultas ... see more

In the article, on the basis of observational data the problems of the specific frequency of globular clusters are studied. Possible relationships between them and the absolute stellar magnitude of their host galaxy are considered, where the observational... see more

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