oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 46 )

2018 ( 99 )

2017 ( 105 )

2016 ( 129 )

Custom range...

Search Results: 1 - 10 of 73672 matches for " Jorge Carlos Hevia-Orozco "
All listed articles are free for downloading (OA Articles)
Page 1 /73672
Display every page Item
EEG Characteristics of Adolescents Raised in Institutional Environments and Their Relation to Psychopathological Symptoms  [PDF]
Jorge Carlos Hevia-Orozco, Araceli Sanz-Martin
Journal of Behavioral and Brain Science (JBBS) , 2018, DOI: 10.4236/jbbs.2018.810032
Abstract: Children reared in institutional environments present emotional and cognitive affectations, as well as changes in the anatomy and functioning of certain cerebral areas, such as the prefrontal cortex. However, knowledge of the long run effect of these affectations remains scarce. Therefore, this study was designed to correlate the cortical electroencephalographic (EEG) and psychopathological parameters. Resting EEG from 10 institutionalized (IA) and 10 never-institutionalized adolescents (NIA) was obtained and this was parametrically correlated with the intensity of symptoms of depression, post-traumatic stress disorder (PTSD) and anxiety. Results showed that the IA group showed higher indices of depression, anxiety and PTSD, accompanied by low relative power (RP) in the fast bands, high activity in the slow bands in frontal areas, and higher alpha2 RP in temporal areas. In addition, IA showed higher EEG-correlations among frontal areas but lower EEG-correlations among prefrontal, parietal and temporal areas in the gamma band. We also found correlations between the EEG parameters and psychopathological scores. These EEG findings can contribute to improve our understanding of how stress experienced early in life may impact the development of the cortex, and how this, in turn, may predispose individuals to develop psychiatric conditions.
Prefrontal-Parietal Correlation during Performance of a Visuospatial Working Memory Task in Children, Adolescents and Young Adults  [PDF]
Miguel Angel Guevara, Jorge Carlos Hevia-Orozco, Araceli Sanz-Martin, Lucía Ester Rizo-Martínez, Marisela Hernández-González, Mayra Linné Almanza-Sepúlveda
Journal of Behavioral and Brain Science (JBBS) , 2015, DOI: 10.4236/jbbs.2015.510043
Abstract: Development of the prefrontal cortex and its connectivity with different cortical areas has strong implications for the improvement of working memory. The aim of this research was to characterize the interhemispheric (INTER) prefrontal and hemispheric (INTRA) frontopolar-dorsolateral prefrontal and dorsolateral prefrontal-parietal correlation (r) in children, adolescents and adults during performance of a visuospatial working memory task (VSWM). INTERr and INTRAr of 36 different aged male participants (11 - 13, 18 - 20 and 26 - 30 years old) were calculated during performance of the Corsi Block-Tapping task, which assessed VSWM. On this task, children showed lower correct responses than adolescents and adults. Adults also showed lower total execution times than children and adolescents, with a more efficient performance. On the EEGs, the older groups showed both higher interfrontal correlations and left and right prefronto-parietal correlations than children. According to our results, the progressive efficiency in VSWM is related to differences in EEG patterns among children, adolescents and adults.
SECADO SOLAR Y CONVENCIONAL DE LA GUADUA ANGUSTIFOLIA
JORGE AUGUSTO MONTOYA,CARLOS ALBERTO OROZCO
Scientia Et Technica , 2005,
Abstract: El objetivo de este artículo es la descripción del secado de la guadua, tanto La Guadua Rolliza como la Guadua en tablillas para una adecuada aplicación en usos y comercialización de productos de la especie de bambú "Guadua angustifolia". Las tecnologías que se han probado son las del secador solar tipo invernadero, secado convencional en cámaras y en proyecto de desarrollo de investigación futuro el secado con ventilación por tiro forzado. Esta investigación es fundamental para desarrollar un producto a escala industrial y/o de exportación. Como resultado principal, se construyeron 2 prototipos solares, el primero ubicado en el vivero de la Universidad Tecnológica de Pereira y el segundo en la localidad de Cerritos, para el secado de Guadua en tablillas. En cuanto al secado en cámara convencional se tienen resultados concretos en secado de Guadua rolliza, realizado en los hornos del Centro Nacional de la Madera del SENA Medellín. En la UTP se acaban de automatizar dos hornos, uno solar-asistido por gas y otro convencional.
La Filosofía de House: Todos Mienten
Jorge Hevia
Medicina (Buenos Aires) , 2012,
Abstract:
La Filosofía de House: Todos Mienten
Jorge Hevia
Medicina (Buenos Aires) , 2012,
Abstract:
OPTIMIZACIóN DEL AISLAMIENTO TéRMICO DE UNA CUBIERTA TRANSPARENTE DE UN SECADOR HíBRIDO DE Guadua angustifolia
Orozco,Carlos Alberto; Acosta,Ricardo; Montoya,Jorge Augusto;
Biotecnología en el Sector Agropecuario y Agroindustrial , 2011,
Abstract: in a solar hybrid dryer (solar assisted gas or electricity) its main problem is to minimize its operational costs due to energy consumption. for this, was determined the optimum thickness of air confined in the plastic cover as thermal isolation, was calculated overall coefficient of heat transfer 'u', and was estimated the power of the external source which was of 1,8 kw and found that energy consumption is approximately 5,35 times less than the power of the hybrid dryer with single plastic deck. the concept is applicable to any type of solar dryer, solar-assisted or any greenhouse in agroindustrial area.
OPTIMIZACIóN DEL AISLAMIENTO TéRMICO DE UNA CUBIERTA TRANSPARENTE DE UN SECADOR HíBRIDO DE Guadua angustifolia OTIMIZA O DE ISOLAMENTO TéRMICO DE UMA TAMPA TRANSPARENTE DE SECADOR HíBRIDO DE Guadua angustifolia THERMAL INSULATION OPTIMIZATION OF A TRANSPARENT COVER FROM HYBRID DRYER OF Guadua angustifolia
Carlos Alberto Orozco,Ricardo Acosta,Jorge Augusto Montoya
Biotecnología en el Sector Agropecuario y Agroindustrial , 2011,
Abstract: El principal problema que tiene un secador solar híbrido (solar asistido con gas o electricidad) son sus costos de operación por consumo de energía. Para ello se determinó el espesor óptimo de aire confinado en la cubierta plástica el cual actúa como aislamiento térmico, se calculó el coeficiente global de transferencia de calor 'U', se estimó la potencia de la fuente externa la cual fue de 1,8 kW y se encontró que el consumo de energía es aproximadamente 5,35 veces menos que la potencia del secador híbrido con cubierta sencilla. El concepto es aplicable a cualquier tipo de secador solar, solar-asistido o cualquier invernadero para el sector agroindustrial. 0 principal problema con um secador solar híbrido (solar-gás assistido ou com electricidade) s o os custos operacionais para o consumo de energia. Para este fim a pesquisa determinou a espessura ideal de ar confinado na tampa de plástico (duas carnadas) que atua como isolamento térmico, foi calculada a taxa global de transferencia de calor 'U' e estimada pela alimenta o externa de 1,8 kW e descobriu que o consumo de energía é de cerca de 5,35 vezes menor do que a potência do secador revestido híbrido simples. 0 conceito é aplicável a qualquer tipo de secador solar, solar assistida ou qualquer tampa plástica no seitor agrícola. In a solar hybrid dryer (solar assisted gas or electricity) its main problem is to minimize its operational costs due to energy consumption. For this, was determined the optimum thickness of air confined in the plastic cover as thermal isolation, was calculated overall coefficient of heat transfer 'U', and was estimated the power of the external source which was of 1,8 kW and found that energy consumption is approximately 5,35 times less than the power of the hybrid dryer with single plastic deck. The concept is applicable to any type of solar dryer, solar-assisted or any greenhouse in agroindustrial area.
NIVELES DE CONTAMINACIóN GENERADOS POR PROCESO DE SECADO DE CAFé Y PLANTEAMIENTO DE SOLUCIONES.
CARLOS A. OROZCO H.,JORGE A. MONTOYA,CARLOS A. MONTILLA M.
Scientia Et Technica , 2010,
Abstract: Este artículo describe los resultados del proceso seguido para dar solución a una problemática específica de un gremio productivo de la Ciudad de Santa Rosa de Cabal (Risaralda), consistente en elaborar un estudio que cuantificó los niveles de contaminación (sonora, material particulado, gases y vapores de combustión) generados en el proceso de beneficio y secado de café, y posteriormente plantear soluciones para la atenuación de los mismos a niveles permitidos por la ley, para la emisión de vapores y material particulado.
Successful Treatment of Hemifacial Myokymia and Dystonia Associated to Linear Scleroderma “En Coup de Sabre” with Repeated Botox Injections
Carlos A. Ca as,Jorge L. Orozco,Andrea Caicedo Paredes,Fabio Bonilla-Abadía
Case Reports in Medicine , 2012, DOI: 10.1155/2012/691314
Abstract: Linear scleroderma “en coup de sabre” (LSCS) is a form of localized scleroderma presents as band-like sclerotic lesions of the frontoparietal area. It has been reported in association with diverse neurological manifestations like seizures, migraine, neuromyotonia, dystonia and abnormalities in MRI and CT studies as cerebral atrophy, white matter lesions, intraparenchymal calcification, meningeocortical alterations, and skull atrophy. We describe a patient with LSCS associated with two abnormal movements: permanent myokimia of right masseter muscle and recurrent spasmodic retraction of right cigomatic and depressor labii inferioris muscles. He was initially treated with methotrexate and steroids without response, so later on he underwent repeated Botox injections with remarkable improvement.
PROTOTIPO DE RECUPERACION DE REFRIGERANTES
CARLOS ALBERTO OROZCO,JORGE AUGUSTO MONTOYA,HéCTOR A. GONZáLEZ
Scientia Et Technica , 2004,
Abstract: Este artículo presenta un avance del proyecto de investigación en variables ambientales, relacionado con la construcción del prototipo de equipo recuperador de refrigerantes propuesto como equipo de laboratorio para pruebas, dentro de lo que sera el plan de recuperación de refrigerantes para el area metropolitana.
Page 1 /73672
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.