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Search Results: 1 - 10 of 600009 matches for " César A García-Ubaque "
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Aprovechamiento de Biomasa Peletizada en el Sector Ladrillero en Bogotá-Colombia: Análisis Energético y Ambiental Use of Pelleted Biomass in the Brick Industry in Bogota-Colombia: Energy and Environmental Analysis
César A García-Ubaque,Martha L Vaca-Bohórquez,Gabriel F Talero
Información Tecnológica , 2013,
Abstract: En este estudio se compara el desempe o energético y ambiental del uso de combustibles a partir de dos tipos de biomasas peletizadas: residuos de madera, provenientes de podas y residuos de la producción de muebles, principalmente aserrín. La biomasa proveniente de residuos de madera es uno de los materiales más adecuados para utilizar como combustible alternativo. El sector ladrillero tiene una gran demanda energética para sus procesos de secado y cocción y el uso de combustibles alternativos a partir de biomasa permite obtener reducciones importantes en emisiones atmosféricas y no afecta las condiciones técnicas del proceso de producción de ladrillos. La biomasa con mejor desempe o, tanto en las variables energéticas como ambientales evaluadas, fue el aserrín. This study compared the energy and environmental performance of fuels from two types of pelleted biomass: wood waste from pruning and waste from furniture production, mainly sawdust. Wood residues biomass is one of the most suitable materials for using as an alternative fuel. The brick manufacture sector has a high energy demand for its drying and firing processes and the use of alternative fuels from biomass allows significant reductions in emissions and does not affect the technical conditions of the process of brick production. The biomass with better performance was sawdust, which presented the optimum energy and environmental variables.
Evaluation of the dioxin and furan formation thermodynamics in combustion processes of urban solid wastes
Moreno-Pirajan, J.C.;García-Ubaque, C.A.;Fajardo, R.;Giraldo, L.;Sapag, K.;
Eclética Química , 2007, DOI: 10.1590/S0100-46702007000100002
Abstract: specific combustion programs (gaseq, chemical equilibria in perfect gases, chris morley) are used to model dioxin and formation in the incineration processes of urban solid wastes. thanks to these programs, it is possible to establish correlations with the formation mechanisms postulated in literature on the subject. it was found that minimum oxygen quantities are required to obtain a significant formation of these compounds and that more furans than dioxins are formed. likewise, dioxin and furan formation is related to the presence of carbon monoxide, and dioxin and furan distribution among its different compounds depends on the chlorine and hydrogen relative composition. this is due to the fact that an increased chlorine availability leads to the formation of compounds bearing a higher chlorine concentration (penta-, hexa-, hepta-, and octachlorides), whereas an increased hydrogen availability leads to the formation of compounds bearing a lower chlorine number (mono, di-, tri-, and tetrachlorides).
Barreras Geográficas y Económicas para el Acceso a los Servicios Oncológicos del Instituto Nacional de Cancerología en Bogotá
García-Ubaque,Juan Carlos; Quintero-Matallana,Carmen S .;
Revista de Salud Pública , 2008, DOI: 10.1590/S0124-00642008000400008
Abstract: objective geographical and economic barriers to access to national cancer institute (nci) oncology services were evaluated; such approach revealed the need for alternatives for dealing with these issues and considering studies aimed at assessing similar problems and resolving them. methods an analytical empirical approach used qualitative and quantitative statistical methods were used within a context of social concern. results only 176 out of 3 391 patients had access to the "temporary-housing programme" during 2005, covering 5,19 % of all patients coming from remote regions of colombia. most patients were women who were looking for alternatives outside the institutional programmes being offered. conclusion there is a need to fix gender inequity and search for better housing alternatives to providing refuges, providing access to specialised treatment and the need for attending people with dignity and ensuring quality of life. the study led to proposing new short-, medium- and long-term alternatives for improving health service access.
Un estudio sobre los "MITEMAS" en los coros de las Bacantes de Eurípides
García Alvarez,César;
Byzantion nea hellás , 2010, DOI: 10.4067/S0718-84712010000100002
Abstract: this essay presents the four mythemes - happy place, cosmic harmony violence bacchic and puer aeternus-present in the choruses of eurípides' tragedy the bacchae, these mythemes help us understand the thinking of eurípides, more complex than the easy simplifications that has been treated. indeed, the four issues is one reason only of literature, the human aspiration to a permanent order in which space comedian and a man find a harmony that was originally denied. the key to this lies in an anthropological examination of the human condition, be dropped (semele) and yet full of divine aspirations (zeus), while this duality is resolved, the history of man is a little story, closer of the epic tragedy of pentheus that of achilles.
EL IMAGINARIO DE LA INFANCIA EN LOS POETAS DE CHIPRE ANTE LA INVASIóN TURCA DE 1974
García álvarez,César;
Byzantion nea hellás , 2009, DOI: 10.4067/S0718-84712009000100011
Abstract: to begin with, a brief overview of cyprus' recent history is presented, and after that, a deeper analysis of the imaginary of children in greek-cypriot poetry since the invasion of 1974. this article is the result of conversations of professor garcía with authorities of the cypriot government, poets, historians and people forcibly displaced from their homes, all of which took place thanks to a scholarship granted by the government of cyprus, for which the author is grateful.
APARATOS DE ESTABILIZACIóN Y DE REEMPLAZO DE USO CORRIENTE EN ARTRODESIS Y ARTROPLASTIAS DE LA COLUMNA CERVICAL
García M,César;
Revista chilena de radiología , 2008, DOI: 10.4067/S0717-93082008000400003
Abstract: continuous advances in diagnosis and treatment of cervical spine diseases have modified their surgical indications. complex degenerative cervical disease not responding to conservative treatment is its main indication, with an important increase in these types of surgical procedures, also including trauma, scoliosis/deformities and neoplasm. having knowledge ofdevices currently used in arthroplastyand arthrodesis, their general indications, biomechanics and complications enables radiologists to get accurate image interpretation as well as to render adequate radiology reports.
ANATOMIA DEL ERROR EN RADIOLOGIA
García M.,César;
Revista chilena de radiología , 2003, DOI: 10.4067/S0717-93082003000300006
Abstract: medical activity is practised in uncertainty. this implies a high-risk environment. it is necessary to adopt measures and make interventions designed to contain medical risks and errors, improving healthcare safety. a profound knowledge is required to deal with mechanisms of error in our speciality and introduce the necessary actions to prevent and correct errors, acting over people, work systems and institutions
Paradigmas para la ense?anza de las ciencias sociales en las escuelas de medicina
García,Juan César;
Revista Cubana de Salud Pública , 2010, DOI: 10.1590/S0864-34662010000400014
Abstract: some of the problems in teaching of social sciences at the medical schools were presented, together with the proposal of educational models to improve teaching in this field. the teaching of a discipline in a university career can not be planned without taking the guiding models of the general education into account, and then the specific disciplines are added. up to the present, curricula do not show the unifying conceptual framework needed for this. most of the health profession schools′ curricula in latin america separate basic sciences from clinical sciences as well as the different prevention levels. taking into consideration the advantages of integrated teaching in the above-mentioned aspects, the use of integrated educational models or paradigms was put forward. leavell and clark′s paradigms were provided as examples of educational models that might be used to design health profession curricula; at the same time, another model was suggested for the social sciences.
APARATOS DE ESTABILIZACIóN Y DE REEMPLAZO DE USO CORRIENTE EN ARTRODESIS Y ARTROPLASTIAS DE LA COLUMNA CERVICAL STABILIZATION AND REPLACEMENT DEVICES CURRENTLY USED IN ARTHRODESIS AND ARTHROPLASTIES OF THE CERVICAL SPINE
César García M
Revista Chilena de Radiología , 2008,
Abstract: Los avances diagnósticos y terapéuticos de las enfermedades de la columna vertebral modificaron sus indicaciones quirúrgicas. La enfermedad degenerativa complicada sin respuesta al tratamiento conservador, es su principal indicación y va en aumento; también incluye traumatismos, escoliosis/ deformidades y neoplasias. Conocer los tipos generales de elementos utilizados en artroplastías y artrodesis, las indicaciones generales, biomecánica y complicaciones, permite a los radiólogos una mejor evaluación de estas imágenes y la elaboración de un informe radiológico adecuado. Continuous advances in diagnosis and treatment of cervical spine diseases have modified their surgical indications. Complex degenerative cervical disease not responding to conservative treatment is its main indication, with an important increase in these types of surgical procedures, also including trauma, scoliosis/deformities and neoplasm. Having knowledge ofdevices currently used in arthroplastyand arthrodesis, their general indications, biomechanics and complications enables radiologists to get accurate image interpretation as well as to render adequate radiology reports.
Juan César García interviews Juan César García
Juan César García
Social Medicine , 2007,
Abstract:
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