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Search Results: 1 - 10 of 220406 matches for " Salazar L. Luz Marina "
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Procedimiento para el dise o de un sistema de calentamiento solar-mixto de aire que utiliza agua como fluido de trabajo
Boada E. Luis Francisco,Rodríguez A. Carlos Alfonso,Salazar L. Luz Marina
Ingeniería e Investigación , 1983,
Abstract: En este artículo se describe un sistema solar-mixto de calefacción de aire que incorpora colectores planos calentadores del agua, un tanque acumulador de calor y un dispositivo para el intercambio de calor agua-aire. Se presentan los ensayos que determinaron la disposición óptima del equipo para el intercambio de calor con flujo de agua por termosifón y el comportamiento térmico para diferentes flujos de aire, así como los ensayos para conocer el comportamiento del sistema de calentamiento solar de agua. Finalmente, el dise o se efectúa mediante un programa de computador adaptado para tal fin.
Trasegar de las subjetividades y las memorias de las y los jóvenes desmovilizados en el tránsito a la vida civil. Una mirada a los programas educativos y de apoyo psicosocial
Lara Salcedo,Luz Marina; Delgado Salazar,Ricardo;
Universitas Humanística , 2010,
Abstract: this paper intends to provide an analytical framework on relevant aspects derived from the present research, which intended to explore and understand demobilized youth's subjectivity shifts, and the way some educational programs addressed to that community are coming to terms with them, as a part of those groups' process of return to civilian life. by the same token, a number of pedagogical reflections born from the educational experiences studied are brought into focus. thus, this study intends to enrich the field of knowledge and discussion on the processes of return to civilian life.
Demobilized youth subjectivities and memory shifts through the passage to civilian life. A look at educational and psycho-social support programs
Luz Marina Lara Salcedo,Ricardo Delgado Salazar
Universitas Humanística , 2010,
Abstract: This paper intends to provide an analytical framework on relevant aspects derived from the present research, which intended to explore and understand demobilized youth’s subjectivity shifts, and the way some educational programs addressed to that community are coming to terms with them, as a part of those groups’ process of return to civilian life. By the same token, a number of pedagogical reflections born from the educational experiences studied are brought into focus. Thus, this study intends to enrich the field of knowledge and discussion on the processes of return to civilian life.
De la mediación del conflicto escolar a la construcción de comunidades justas
DELGADO-SALAZAR,RICARDO; LARA-SALCEDO,LUZ MARINA;
Universitas Psychologica , 2008,
Abstract: the following article aims to offer a framework that allows a better comprehension of the most relevant aspects, developed by three educational institutions that constructed innovative and significant paths in the area of school justice. the study explored the experiences of the institutions, based in the just community theoretical model. this process allow the authors to unveil the principles that support school actions, the configuration dimensions of school justice, the action plans that guide school projects, and the challenges of the educational practices. as a consequence, the researchers expect with this study to enrich the available knowledge and the discussion around the problem of mediation of school conflict.
From the Mediation of School Conflict to the Construction of Just Community
RICARDO DELGADO-SALAZAR,LUZ MARINA LARA-SALCEDO
Universitas Psychologica , 2008,
Abstract: The following article aims to offer a framework that allows a better comprehension of the most relevant aspects, developed by three educational institutions that constructed innovative and significant paths in the area of school justice. The study explored the experiences of the institutions, based in the just community theoretical model. This process allow the authors to unveil the principles that support school actions, the configuration dimensions of school justice, the action plans that guide school projects, and the challenges of the educational practices. As a consequence, the researchers expect with this study to enrich the available knowledge and the discussion around the problem of mediation of school conflict.
Reflexiones pedagógicas psicológicas y filosóficas del quehacer odontológico en el área clínica
GEDLER,H OMAIRA; ALVAREZ,MARY LUZ; ALVAREZ DE LUGO,MARINA; BATISTA,CARMEN; DE SENA,FRANCISCO; FERRO,MARíA J.; GíL,MARíA DE LOS ANGELES; LóPEZ,ESTHER; LEóN,MARITZA; SANBLIMBENI,MARíA; SALAZAR,JOSé RAFAEL; TORO,MAITEE; VIVAS,ELISA; YIBRíN,CAROLL;
Acta Odontológica Venezolana , 2001,
Abstract: in this article, it is analysed and establised on a basis the theoretical suppositions as: image, man high of spirit, respect and mystic in their relationship with their odontological occupation in the clinic area. the theoretical entail with the pedagogical practice, is the most important expectation to cover in these seminaries directed to conscience the trascendence of the eductive fact.
Histología de branquias, hígado y ri ón de juveniles del pez neotropical Colossoma macropomum (Characiformes, Characidae) expuesto a tres temperaturas Histology of gill, liver and kidney in juvenile fish Colossoma macropomum exposed to three temperatures
Luz-Marina Rojas,Claunis Mata,Aridays Oliveros,Raquel Salazar-Lugo
Revista de Biología Tropical , 2013,
Abstract: Colossoma macropomum es uno de los peces tropicales de agua dulce con mayor éxito en el cultivo en aguas continentales tropicales. Se realizó una evaluación histológica de branquias, hígado y ri ón de este pez expuesto a tres temperaturas (T18, T29 y T35oC). Se utilizaron 18 ejemplares juveniles con índices biométricos de 17.87±7.88cm y 87.69±34.23g. Los análisis histológicos fueron hechos de acuerdo a técnicas previamente descritas. Se encontró que las branquias, el hígado y el ri ón de los peces T29 presentaron citoarquitectura normal. Por el contrario, en las branquias de los peces T18, se observaron gotas lipídicas inmersas en el tejido branquial; los peces T35 presentaron desorganización en la estructura del tejido branquial y necrosis celular. El hígado de los peces T18, mostró hepatocitos claros y oscuros y el de T35, presentó células con granulaciones citoplasmáticas y da o en la membrana plasmática. En el ri ón de los T18, se observaron alteraciones en la distribución del tejido hematopoyético. La característica más resaltante en el ri ón de los peces T35, fue la desorganización del tejido glomerular. En conclusión, la temperatura de 18°C se puede considerar crítica para la cachama y la de 35oC severa. De los tres órganos evaluados, el hígado y las branquias resultaron ser los más sensibles a los da os inducidos por las temperaturas en esta especie. Water temperature is an important factor that affects growth and antioxidant enzyme activities in fish, and when adverse, it may trigger diseases in fish populations. C. macropomum is a freshwater neotropical fish widely distributed in South America and abundant in river basins as the Amazon and Orinoco. It is highly used for intensive aquaculture development and is a very important product for the local riverside economy in Venezuela. The purpose of our study was to examine the water temperature effect on gills, liver and kidneys of juvenile fishes of C. macropomum. Eighteen juveniles with biometrical index of 17.87±7.88cm and 87.69±34.23g were respectively exposed to three culture temperatures (T18, T29 and T35oC) during a period of 21 days. Histological analyses on gills, liver and kidney were made according to standard methodologies. Our results showed that these tissues exhibited normal citoarchitecture at T29. On the contrary, T18-gills displayed brachiallipid droplets inside brachial epithelium; and disorganization in the brachial tissue was observed at T35. Furthermore, we observed two kinds of hepatocytes (dark and light) on T18°C-liver. The T35-liver samples showed cytoplasmatic granulatio
Subjectivities of Young People Demobilized from FARC in a Scenario of Peace Construction  [PDF]
Luz Marina Lara Salcedo
Open Journal of Political Science (OJPS) , 2017, DOI: 10.4236/ojps.2017.71007
Abstract: This article presents the results of a research on the displacement of subjectivities of a group of demobilized young people formerly enlisted in the Colombian armed group FARC guerrillas (Fuerzas Armadas Revolucionarias de Colombia, Revolutionary Armed Forces of Colombia). Drawing on a social constructionist perspective (Gergen, 1996), this paper emphasizes a perspective of the subject formed inside the armed group—under new conditions, scenarios, personals traits and ways of living—, as well as the new subject that emerges after deciding to rejoin civilian life. The methodological design was oriented from the central premises of the social constructionist perspective. The methodological approach was the narrative inquiry with its three phases: production, analysis and interpretation. For analytical purposes, the model used was the narrative approach proposed by Coninck & Godard (1998). The main results show that when the youngsters decide leaving the armed group, begins the transition to civilian life; it is a time of confrontation, doubts and fears that young people must face in their own way. The youngsters came from being immersed in an armed group that supported their identity. The transition implies losing a way of living, experiencing the uncertainty, but also with the hope of rebuilding their life projects. In this transit, youngsters feel unprotected and helpless; the values acquired of brotherhood and solidarity in the guerrilla life suddenly disappear and young people is confronted with a world of new social meanings and ways of being and doing. The results show the rupturing and continuities that rise in their subjectivities before and after joining the armed group, as well as the emerging and conflicting subjectivities in the process of disengagement. In addition, great fluctuations of emotional repertoires, as well as identity, ties, values and lifestyles go through a process of redefinition and reconfiguration to settle back into civilian society.
Queratinocitos derivados de piel humana modificados por el vector retroviral FOCH 29-NeoR
Martha L. Arango,Clara I. Chamorro,Luz Marina Restrepo
Iatreia , 2000,
Abstract: En este protocolo se evaluará la eficiencia de la transducción mediada por el vector retroviral FOCH 29-NeoR derivado del virus de Friend; éste ha mostrado una alta eficiencia en la transducción, tanto de células madres hematopoyéticas como de otras líneas celulares. Se medirá su eficiencia de transducción en cultivos primarios de queratinocitos, derivados de biopsias de piel humana o de sobrantes de procedimientos quirúrgicos como circuncisiones, mastectomías y cirugía cosmética de pacientes que consultan el Hospital Universitario San Vicente de Paul, Hospital la María, la Clínica del Rosario y la Clínica León XIII. Las muestras de piel se procesarán en un lapso no superior a 12 horas, se eliminará el exceso de dermis y tejido conectivo por digestión con dispasa (0.6-2.4 U/ml a 37°C) durante 1 hora. Las muestras serán lavadas con PBS, antibiótico (penicilina + estreptomicina) y se cortarán en fragmentos de 1-2 mm; después de 2-3 horas de digestión con tripsina-EDTA (0.25%) las células serán resuspendidas en KGM (Medio de crecimiento para queratinocitos) y se sembrarán a una concentración de 105 - 3x105 células por plato de 100 mm; se incubarán a 37°C, 5% CO2 con cambios de medio 2-3 veces por semana. Se harán subcultivos con el fin de expandirlos y congelar una parte de las células (banco). Posteriormente, los queratinocitos en cultivo serán modificados con el vector retroviral anfotrópico FOCH 29-NeoR ya sea por cocultivo con la línea productora del virus Clon 26, o por infección con sobrenadante filtrado (0.45mm) producido por la misma, en presencia de polybren. La eficiencia de la transducción se determinará mediante reacción en cadena de la polimerasa (PCR) con el ADN de las células post transducción, con cebadores específicos del gen de resistencia a la neomicina (NeoR); se incluirán tanto controles negativos (células no transducidas ) como positivos (plásmidos que contienen el gen NeoR o células de la línea productora del virus). Para demostrar funcionalmente la expresión del gen vectorizado se harán ensayos de resistencia a la G418 (500-1000 mg/ml). Confirmar que el vector FOCH29-NeoR transluce eficientemente los queratinocitos, permitirá utilizarlo posteriormente para vectorizar genes de interés para el tratamiento de algunas enfermedades de la piel o bien factores de crecimiento tales como el factor de crecimiento epidérmico (EGF) y el factor de cre
Contributions of Educational Psychology to University Education  [PDF]
Luz Marina Méndez Hinojosa
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.63017
Abstract: The scientific article presented here is intended to provide university teachers the theoretical basis for their work in the classroom, considering three principal theoretical learning paradigms: Behaviorism, cognitivism and constructivism; and four particular theories that have been labeled like constructivist (psychogenetic theory, meaningful learning theory, theory of strategic learning and the historical-cultural theory). Thus, this theoretical review provides guidelines to act in the university classroom that can lead to the elimination of “teaching without learning”.
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