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Search Results: 1 - 10 of 4934 matches for " Mirla Rodriguez "
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Biological Template Based on ent-Kaurane Diterpenoid Glycosides for the Synthesis of Inorganic Porous Materials  [PDF]
ángela B. Sifontes, Mirla Rodriguez, David Freire, Wendy Rondón, Ligia Llovera, Edgar Ca?izales, Franklin J. Méndez, Andrea Monaco, Yraida Díaz
Advances in Chemical Engineering and Science (ACES) , 2013, DOI: 10.4236/aces.2013.34035
Abstract: Recent studies on the preparation of porous nano-materials revealed that the use of kaurane diterpenoids molecules from steviol as biological template favors the obtaining of metallic oxides with tubular morphology as nanorods or nanofibers. In this sense, the present contribution shows an analysis in order to understand how these glycosides of kaurane diterpenoids control the nucleation and growth of inorganic materials favoring the obtaining of these morphologies. For this purpose, it was necessary to carry out studies of the leaf aqueous extract of Stevia rebaudiana by HRTEM, FTIR and 1H-NMR.
Vecino Popular o Consejo Comunal? Repensando la intervención en las comunidades populares venezolanas
Mirla Pérez
Revista Venezolana de Análisis de Coyuntura , 2010,
Abstract: Se presenta un trabajo crítico sobre las implicaciones de la intervención en las comunidades populares venezolanas. Se toma como punto de partida del análisis la noción de comunidad presente en la ley de los consejos comunales. Pasamos por un término como comuna, totalmente ajeno a nuestra realidad popular, y llegamos a la noción de vecino popular y vecindad como prácticas y conceptos propios de nuestra cultura. El lugar del vecino es el territorio de lo público que se deja tocar y es prolongación de las vivencias familiares. Esta vivencia de vecindad, en el sentido actual, está impregnada de afectividad matricentrada (la afinidad más próxima). Desde aquí se recuperan prácticas y conceptos fundamentales para nuestra realidad popular vivida así desde el periodo hispánico
Algunos aspectos relacionados con los riesgos en una central de esterilización
Méndez Hernández,Mirla;
Revista Cubana de Enfermer?-a , 2004,
Abstract: the paper shows the risks present in a sterilization center and their relation with biosafety. it identifies the different types of risks and makes a description of each of them. for obtaining information, observation was used as the primary data source and the existing records as a secondary source. the risks that may appear in a sterilization center are of biological, physical, chemical type and also those conditioned by human and environmental factors. the biological risk is the fundamental one. the purpose of this paper is to expand the level of knowledge and responsibility of the workers in a sterilization center so that they are better prepared for facing their daily work and preserving their health.
Algunos aspectos relacionados con los riesgos en una central de esterilización
Mirla Méndez Hernández
Revista Cubana de Enfermer?-a , 2004,
Abstract: Se muestran los riesgos que están presente en una central de esterilización y su relación con la bioseguridad. Se identifican los diferentes tipos de riesgo y se hace una descripción de cada uno de ellos. Para obtener la información se utilizó la observación, como fuente primaria y los registros existentes como fuente secundaria. Los riesgos que se pueden presentar en una central de esterilización son de tipo biológico, físico, químico y los condicionados por factores humanos y ambientales. El riesgo biológico es el principal de todos. Se pretende con la realización de este trabajo aumentar el nivel de conocimiento y de responsabilidad de los trabajadores de una central de esterilización con la intención de que estén mejor preparados para enfrentar su diaria labor y preservar su salud. The paper shows the risks present in a sterilization center and their relation with biosafety. It identifies the different types of risks and makes a description of each of them. For obtaining information, observation was used as the primary data source and the existing records as a secondary source. The risks that may appear in a sterilization center are of biological, physical, chemical type and also those conditioned by human and environmental factors. The biological risk is the fundamental one. The purpose of this paper is to expand the level of knowledge and responsibility of the workers in a sterilization center so that they are better prepared for facing their daily work and preserving their health.
Leandro Konder: Compromisso Militante na “Batalha das Ideias”
Mirla Cisne e Tatiana Brettas
Em Pauta : Teoria Social e Realidade Contemporanea , 2010,
Abstract:
Estoque e disponibilidade de nitrogênio no solo em experimento de longa dura??o
Weber, Mirla Andrade;Mielniczuk, Jo?o;
Revista Brasileira de Ciência do Solo , 2009, DOI: 10.1590/S0100-06832009000200020
Abstract: nitrogen is the nutrient required in the largest quantity by plants and is generally the most limiting nutrient for crop yield. the objective of this research was to evaluate the effect of cropping systems on n accumulation and availability in the soil. a long-term experiment (22 years) was conducted on a paleudult soil at an experimental station of the federal university of rio grande do sul (30 o 50 ' 52 '' s and 51 o 38 ' 08 '' w), in eldorado do sul, brazil, established in 1983. the experiment consisted of ten no-till cropping systems (bare soil, fallow/maize, oat/maize, digitaria, oat + vetch/maize limed and mobilized to a depth of 70 cm in 1992, oat + vetch/maize, oat+vetch/maize+cowpea, pigeon pea+lablab, lablab+maize, pigeon pea+maize,) and two n rates applied to maize as urea (0 and 180 kg ha-1). soil was sampled in 2005 from the 0-20 cm layer and n stocks were determined. the amounts of biologically fixed n by legumes and n lost from fertilizer (urea) in 22 years were estimated. the n uptake by oat grown in succession to maize in 2006 was also evaluated. the n stock amounted to 3,040 kg ha-1 in 1983 and ranged from 2,500 to 4,800 kg ha-1 in 2005. the legume-based cropping systems resulted in the highest n stocks. biological n fixation ranged from 800 to 1,980 kg ha-1, and on average 48 % of 3,180 kg ha-1 of n applied to maize was lost from the soil-plant system. the greatest n stocks in soil under legume-based systems resulted in the greatest oat n uptake, which ranged from 17 to 100 kg n ha-1.
Publicidad y modernidad en Colombia: apuntes para una comprensión del relato publicitario de la modernidad
Villadiego,Mirla; Bernal,Patricia; Urbanczyk,María;
Signo y Pensamiento , 2006,
Abstract: this article makes a general introduction of the premises, both theoretical and historical, from which the research on "colombian modernity as narrated by publicity: 1900-1950" was carried out. among such premises are the debate on the role of publicity in building colombian modernity, and the analysis of the function of the calculation - need - desire trilogy in consumer decision making. finally, the methodological design is presented along with some partial results and conclusions.
Technological Perspectives in Phylogeny Research: Revisiting Comparative Analysis of Complete Mitochondrial Genomes for Time-Extended Lineages  [PDF]
Tommy Rodriguez
Advances in Bioscience and Biotechnology (ABB) , 2014, DOI: 10.4236/abb.2014.55057
Abstract:

This article seeks to emphasize a simplified approach to phylogeny research using complete mitochondrial genomes alone, while touching upon a number of technological perspectives, such as algorithmic selection, which can help improve accuracy and performance in comparative analysis. My results will show that reliable estimations can be obtained by using mitochondrial markers, even among time-extended taxonomical rankings. Six distinct mammalian groups of taxa were selected for comparison. In all cases, mtDNA models generated reliable phylogeny approximations when compared against other independent data, while rendering exceptional computational performance.


Efecto del consumo de dietas con avena y caraotas negras sobre el perfil lipídico en un modelo experimental en rata
Morón,Mirla Ch; Infante,Benito; ávila,Ana V; García,Omar E; Liuzzi,Juan P;
Revista del Instituto Nacional de Higiene Rafael Rangel , 2010,
Abstract: the consumption of foods rich in soluble and insoluble dietary fiber (df) favorably affects the serum lipid profile by lowering total cholesterol, ldl-cholesterol and triglycerides (tg). the objective of this work was to compare the effect of consumption of diets with oats (avena sativa) and black beans (pha seo lus vulgaris) on the lipid profile of rats. fifteen male rats, spra gue dawley strain were fed ad libitum for 18 days, with three different diets: a control, one containing black beans (15% w / w) and another with oats (15% w / w). the serum total cholesterol concentration decreased 50.56% in the group fed with oats and 40.52% in the group fed with beans. also a de crease of ldl-cholesterol 49.21% in the group fed with oats and 42.93% in the group fed with beans was observed. there was 52.47% reduction of hdlcho lesterol in the group fed with oats and 31.29% for the group fed with beans, this is not a be neficial reduction. the serum tg concentration was significantly lower, 50.20% for the group fed with oats and 51.8% for the group fed with beans. the decrease of these lipids due to diet containing oats or beans, was significantly different from control but not between them. consideration of these results for human health is very important, particularly in reducing the prevalence of cardiovascular disease. the fd effect on hdl-cholesterol levels, are until now contradictory
Efecto del consumo de dietas con avena y caraotas negras sobre el perfil lipídico en un modelo experimental en rata Effect of consumption of diets with oats and black beans on the lipid profile of an experimental model in rat
Mirla Ch Morón,Benito Infante,Ana V ávila,Omar E García
Revista del Instituto Nacional de Higiene Rafael Rangel , 2010,
Abstract: El consumo de alimentos ricos en fibra dietética (FD) soluble e insoluble, afecta favorablemente el perfil de lípidos séricos al reducir las concentraciones de colesterol total, colesterol- LDL y triglicéridos (TG). El objetivo de este trabajo, fue comparar el efecto del consumo de dietas con avena (Avena sa tiva) y con caraotas negras (Phaseolus vulgaris ) sobre el perfil lipídico de ratas. Quince ratas machos, cepa Sprague Dawley, fueron alimentadas ad libitum por 18 días, con tres tipos de dietas: un con trol, una conteniendo caraotas negras (15% p/p) y otra con avena (15% p/p). La concentración del colesterol total sérico disminuyo 50,56% en el grupo alimentado con avena y 40,52% en el alimentado con caraotas. Así mismo, se observó una disminución de colesterol-LDL de 49,21% en el grupo alimentado con avena y un 42,93% en el grupo alimentado con caraotas. Hubo una reducción de 52,47% del colesterol-HDL en el grupo alimentado con avena y 31,29% para el grupo alimentado con caraotas; esta reducción no es beneficiosa. La concentración de TG séricos fue significativamente menor, un 50,20% para el grupo alimentado con avena y de 51,8% para el grupo alimentado con caraota. La disminución de los lípidos séricos debido a la dieta, con avena o con caraotas, mostró diferencias significativas respecto al control, pero, no entre ellas. La consideración de estos resultados en el caso de la salud humana es bien importante, particularmente en la disminución de la prevalencia de enfermedades cardiovasculares. El efecto de FD sobre los niveles de colesterol-HDL, son hasta los momentos, contradictorios The consumption of foods rich in soluble and insoluble dietary fiber (DF) favorably affects the serum lipid profile by lowering total cholesterol, LDL-cholesterol and triglycerides (TG). The objective of this work was to compare the effect of consumption of diets with oats (Avena sativa) and black beans (Pha seo lus vulgaris) on the lipid profile of rats. Fifteen male rats, Spra gue Dawley strain were fed ad libitum for 18 days, with three different diets: a control, one containing black beans (15% w / w) and another with oats (15% w / w). The serum total cholesterol concentration decreased 50.56% in the group fed with oats and 40.52% in the group fed with beans. Also a de crease of LDL-cholesterol 49.21% in the group fed with oats and 42.93% in the group fed with beans was observed. There was 52.47% reduction of HDLcho lesterol in the group fed with oats and 31.29% for the group fed with beans, this is not a be neficial reduction. The serum TG concentration was signif
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