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Search Results: 1 - 10 of 302869 matches for " José David Pinzón "
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Morbidity Due to Obesity, Hypertension and Diabetes II Attributable to Non-Breastfeeding and Low Birth Weight during the 1000 Days of Life: Estimation of the Population Attributable Fraction  [PDF]
Andrea Ramírez, Oscar Bernal, Jesús Rodríguez, José David Pinzón
Health (Health) , 2016, DOI: 10.4236/health.2016.85041
Abstract: Introduction: There is evidence that malnutrition during the first 1000 days of life contributes to the development of chronic diseases in adulthood and therefore may produce a lasting impact on the health of the population. Colombia, like other middle-income countries suffers the double burden of malnutrition in pregnant women and children under 5 years. Also, chronic diseases have positioned within the leading causes of morbidity and mortality. Objective: The aim is to estimate the burden of disease of noncommunicable chronic diseases-NCD’s (hypertension, obesity, diabetes mellitus II) in adults attributable to nutritional risk factors (no-breastfeeding and low birthweight) in the period of 1000 days in Colombia. Methods: The population attributable fraction and the number of NCD’s (hypertension, diabetes mellitus II and obesity) cases due to the risk factors (low birthweight and no-breastfeeding) were estimated. Prevalences of NCD’s and risk factors of interest were taken from national health surveys. Effect measures (odds ratios/relative risks) of the associations 1—low birthweight and hypertension, diabetes mellitus II and 2—no-breastfeeding and obesity were obtained after a systematic literature search. Results: It was estimated that not receiving breastfeeding in the 1000 days could contribute up to 29.9% of all cases of obesity, equivalent to about 4,009,779 cases across the country. Low birth weight could contribute up to 2.1% of cases of hypertension in men and to 4.0% of cases in women, equivalent to 103.769 cases across the country. In addition, low birth weight could contribute to 6.3% of diabetes mellitus II cases, which is equivalent to 23.857 cases in the country. Conclusion: In Colombia, risk factors during the first 1000 days like not receiving breastfeeding and having low birth weight could contribute up to 4,113,549 cases of obesity, hypertension and diabetes mellitus II, with important implications for the health of the population and the Colombian health system.
Estimates of Biomass and Fixed Carbon at a Rainforest in Panama
Reinhardt Pinzón,José Fábrega,David Vega,Erick N. Vallester
Air, Soil and Water Research , 2012,
Mu?oz Astudillo,María Nelcy; Sossa Pinzón,Luis Alfredo; Ospina,Jhon Jairo; Grisales,Adrián; Rodríguez García,José David;
Hacia la Promoción de la Salud , 2011,
Abstract: some perceptions about prostate cancer were identified in a group of over 45 years old men in santa rosa de cabal-risaralda, in order to generate strategies for health promotion on the subject. descriptive study of 150 volunteer males who signed informed consent. semi-structured interviews were conducted using 30 questions designed using the hochbaum et al. beliefs in health model which were organized, codified and categorized. the participants were mostly married (53%), from the urban area (69%), with elementary school schooling level (53%), from lower social strata (81%), having subsidized health (73%), and belonging to the catholic religion (95%). 76% from the respondents were considered vulnerable to prostate cancer if they were older than 60 years. the following risk factors were identified: smoking (29%), promiscuous sexual behavior (8%), poor nutrition (5%) and inheritance (7%). additionally, 60% of them considered they had knowledge about the disease and 97% were aware of its severity; 98% of the men acknowledged the benefits of timely diagnosis, but only a few (27%) had taken the exam. three barriers for the implementation of the test were explained: lack of knowledge (37%), affectation of masculinity (33%), and difficulty in treatment (94%), this last one because of the high cost and low access to specialized services. cultural, economic and access to health services barriers overcome the benefits perceived with the treatment which is reflected in the low intention to take the diagnostic test. it is required to implement participatory education strategies.
Estimates of Biomass and Fixed Carbon at a Rainforest in Panama
Reinhardt Pinzón, José Fábrega, David Vega, Erick N. Vallester, Rafael Aizprúa, Francisco R. López-Serrano, Fred L. Ogden and Kleveer Espino
Air, Soil and Water Research , 2012, DOI: 10.4137/ASWR.S9528
Abstract: This paper presents an estimation of the quantity of carbon fixed in trees in a one hectare (ha) plot at the Cerro Pelado-Gamboa Hydrology Tropical Observatory, which is located in the province of Colon, Panama. The estimation of carbon fixed in trees may provide significant information on carbon flux due to water circulation, which may ultimately enable evaluation of the carbon cycle. All trees larger than 10 cm diameter at breast height (DBH) in the plot were investigated. Carbon fixed within these trees was estimated using a parameterized formula. Tree biomass estimations for the plot were 97.21 Mg ha-1. We identified a rare arboreal pear species (Euphorbiaceous) with higher carbon density than other trees in the plot. The presence of this apparently unique species may be due to specific soil characteristics. The method was evaluated by comparing the results with a second study performed in 2011, which resulted in an estimate of net new carbon (biomass) increment (NNCI), which gives 3.88 Mg ha-1 year-1. In general, the estimation of the biomass and associated carbon content found in this investigation are useful comparative data for economic evaluation of tropical forests in terms of capacity to capture carbon.
Casta?o-Castrillón,José Jaime; Páez Cala,Martha Luz; Pinzón Montes,Jaime Hernán; Rojo Bustamante,Estefanía; Sánchez-Castrillón,Gustavo Andrés; Torres Ríos,Johana Marcela; Valencia Gómez,Mónica Adriana; García Montoya,Crhistian David; Gallego Giraldo,Carlos Andrés;
Revista Facultad de Medicina de la Universidad Nacional de Colombia , 2008,
Abstract: background. smoking may be viewed as a pandemic. materials and methods. descriptive study with a sample of 237 students enrolled from i to x semester of all schools in universidad de manizales during the first academic period of the year 2007. all of them were randomly assigned to answer a questionnaire which included glover nilsson, fargerstr?m and richmond tests. results. according to who criteria, 41 percent of the students are smokers (37.6% regular and 3.4% sporadic) with equal proportions between sexes, 58.2 percent were non-smokers, 0.8 percent ex-smokers and 38.9 percent smoke 1-3 cigarettes a day. 86.6 percent of smokers started his habit before getting into the university; most of them (77.9%) between 12 and 17 years of age. in most of the schools non-smokers are majority, with exception of social communications, education and medicine. 46 percent believes that hould exist a permanent non smoking area in the university cafeterias. the majority of the smokers has low or moderate motivation to quit smoking. conclusions. is urgent to establish preventive actions to in the acquisition of smoki habit and to promote its cessation in every one students.
Estructura y composición de la comunidad de Anuros (Amphibia) en tres bosques en El Santuario De Fauna y Flora Otún Quimbaya, Colombia
Jiménez E. David,Pinzón S. María Alejandra
Acta Biológica Colombiana , 2005,
Abstract: Se comparó la estructura y composición de la comunidad de anuros en tres bosques reforestados con roble, urapán y urapán-roble, en el SFF Otún Quimbaya. Un total de seis especies pertenecientes a dos familias (Leptodactylidae y Dendrobatidae) fueron encontradas. A partir de tres parcelas ubicadas en cada uno de los bosques, se determinó que la riqueza y diversidad de especies fue mayor en el bosque de roble seguido por urapán-roble y por último urapán. Las especies registradas entre urapán y urapán-roble presentan alta similaridad. A partir de la prueba de Kruskal-Wallis se determinó que las variables microclimáticas y de hábitat no presentan diferencias significativas entre los tres bosques, a excepción de la altura del mantillo, la cual fue mayor para el bosque de roble, seguida por el de urapán-roble y de urapán. Los valores arrojados por los índices de Margalef y Shannon se correlacionaron con la altura del mantillo, por lo cual se atribuye a esta variable el patrón de diversidad presentado por los tres bosques.
El laberinto del dolor y la necesidad de impulsar la investigación básica The labyrinth of pain and the need for fostering basic research
José Ricardo Navarro Vargas,Jorge Eduardo Caminos Pinzón
Revista Colombiana de Anestesiología , 2013,
Potentiodynamic Polarization Studies and Surface Chemical Composition of Bismuth Titanate (BixTiyOz) Films Produced through Radiofrequency Magnetron Sputtering
José E. Alfonso,Jhon J. Olaya,Manuel J. Pinzón,José F. Marco
Materials , 2013, DOI: 10.3390/ma6104441
Abstract: The applications of Bismuth Titanate (Bi xTi yO z) materials have been focused on their electronic and optical properties, but with respect to the use of these compounds in applications like corrosion resistance, have been very few or nonexistent. For this reason, in the present investigation Bi xTi yO z thin films were deposited using RF magnetron sputtering onto silicon wafers, stainless steel 316L, and titanium alloy (Ti 6Al 4V) substrates, in order to carry out a study of the corrosion behavior of this compound. The structural properties of the coatings were studied through X-ray diffraction (XRD), the morphology was determined using Scanning Electron Microscopy (SEM), the corrosion resistance behavior of the coated and uncoated substrates was evaluated via the Potentiodynamic Polarization technique, and surface chemical composition was evaluated through X-ray photoelectron spectroscopy (XPS). The XRD results indicated that the films were amorphous. The SEM micrographs showed that the deposited films were homogeneous, but in some cases there were cracks. The potentiodynamic polarization technique showed that the corrosion current in the coated substrates decreased by an order of two magnitudes with respect to the uncoated substrates, but in both cases the corrosion mechanism was pitting due to the pores in the film. The XPS analysis shows that the deposited films contain both Bi 3+ and Ti 4+.
Detecting DoS Attack in Web Services by Using an Adaptive Multiagent Solution
Cristian Iván PINZóN,Nicholas BELIZ,José Carlos RANGEL,Chi Shun HONG
ADCAIJ : Advances in Distributed Computing and Artificial Intelligence Journal , 2013,
Abstract: One of the most frequent techniques of a DoS attack is to exhaust available resources (memory, CPU cycles, and bandwidth) on the host server. A SOAP message can be affected by a DoS attack if the incoming message has been either created or modified maliciously. Resources available in the server (memory and CPU cycles) of the provider can be drastically reduced or exhausted while a malicious SOAP message is being parsed. This article presents a solution based on an adaptive solution for dealing with DoS attacks in Web service environments. The solution proposes a multi-agent hierarchical architecture that implements a classification mechanism in two phases. Each phase incorporates a special type of CBR-BDI agent that functions as a classifier. In the first phase, a case-based reasoning (CBR) engine utilizes a decision tree to carry out an initial filter, and in the second phase, a CBR engine incorporates a neural network to complete the classification mechanism. A prototype of the architecture was developed and the results obtained are presented in this study.
Caracterización molecular de aislamientos de Acinetobacter baumannii provenientes de la unidad de quemados de un hospital de tercer nivel de Bogotá Molecular characterization of Acinetobacter baumannii isolations from a burns unit in a third level attention hospital in Bogotá
Infectio , 2006,
Abstract: Objetivo. En este estudio se realiza una descripción fenotípica y genética de aislamientos de Acinetobacter baumannii provenientes de la Unidad de Quemados del hospital Simón Bolívar de Bogotá durante diez meses de seguimiento. Materiales y métodos. Se tipificaron 25 aislamientos provenientes de pacientes y 3 ambientales mediante REP-PCR. Para la detección microbiológica de carbapenemasas se realizó la prueba de Hodge y el sinergismo de doble disco. Se determinaron los puntos isoeléctricos con isoelectroenfoque de las betalactamasas producidas. La detección de los genes bla OXA23, bla OXA24, bla VIM, bla IMP se realizó mediante PCR. Resultados. Según su genotipo, los aislamientos se reunieron en nueve grupos La genotipificación clasificó los aislamientos en nueve grupos relacionados con un índice de similitud superior a 0,85. En el grupo E, constituido por el 39,2% de los aislamientos, se detectó un clon conformado por los tres aislamientos ambientales y dos recuperados de pacientes. Se presentó resistencia a los carbapenémicos en 64,2% de los 28 aislamientos; de éstos, el 66,6% fueron resistentes, además, a todos los betalactámicos, aminoglucósidos y fluoroquinolonas probados. En 17 de los 18 aislamientos resistentes a imipenem se evidenció la presencia de carbapenemasas del tipo oxacilinasa. En todos los aislamientos resistentes a imipenem se detectó el gen bla OXA23 y la presencia de dos betalactamasas con puntos isoeléctricos de 6,3 y 6,9. Conclusiones. Se detectó un grupo endémico de A. baumannii que permaneció durante los 10 meses del estudio. La presencia de una carbapenemasa del grupo OXA23 fue un factor determinante de la resistencia a los carbapenémicos. Sin embargo, los resultados microbiológicos permiten suponer la presencia de otros posibles mecanismos de resistencia. Objective.This study is a fenotypical and genetical description of Acinetobacter baumannii carried out in a ten month follow-up at the Unidad de Quemados from the Hospital Simon Bolívar in Bogotá. Materials and methods. 25 patient and 3 environmental isolates were typified by REP-PCR. Hodge’s test and double disc sinergy were done for microbiologic carbapenemase detection. Isoelectric points were determined by betalactamases isoelectric focusing. Gene bla OXA23, bla OXA24, bla VIM, bla IMP detection was carried out through PCR. Results. Isolate genotypification allowed their classification in nine groups based on similarities greater than 0.85. The E group consisted of 39.2% of the isolates, a clone formed by three environmental isolates and two recovered from patients. 64.2%
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