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Search Results: 1 - 10 of 209643 matches for " Carolina P.;Lozano "
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Aspectos termodinámicos de la miscibilidad parcial entre el n-octanol y el agua
Mora, Carolina P.;Lozano, Hernán R.;Martínez, Fleming;
Revista Brasileira de Ciências Farmacêuticas , 2005, DOI: 10.1590/S1516-93322005000100003
Abstract: in the present work the thermodynamic analysis for those data presented by dallos and liszi on mole fraction n-octanol-water liquid-liquid equilibria was made. the values were analyzed using the van't hoff method (ln s as a function of t-1) and those presented by grant et al. (ln s as a function of t-1 and ln t). a non-lineal behavior was found in all cases studied by the van't hoff method, which lead us to apply a parabolic regression model derived in order to calculate the enthalpic changes. endothermic processes were obtained for all temperatures studied. in both systems the free energy changes were positive, whereas the entropic changes were negative indicating some kind of organization in the saturated solutions. in the case of n-octanol-saturated water this result would be explained as the hydrophobic hydration around the aliphatic groups and on the other hand, in the case of water-saturated n-octanol, it could be due to organization of n-octanol molecules around water molecules by hydrogen bonds as it has been presented in literature. the thermodynamic values calculated were compared with those presented by other authors, which were obtained by calorimetry and also by means of equilibrium constants as a function of temperature.
Deconstruyendo el modelo deficitario de la apropiación social de la ciencia y la tecnología en Colombia: el caso de la cartilla "Las Maticas de mi Huerta"
Lozano-Borda, Marcela;Pérez-Bustos, Tania;Roatta-Acevedo, Carolina;
Educar em Revista , 2012, DOI: 10.1590/S0104-40602012000200007
Abstract: studies on policy and on activities of social appropriation of science and technology (sast) in colombia have shown the presence of a deficit model that characterizes the relationship between scientific knowledge and the public. this model, which is present in diverse communicative and educational activities, is characterized by establishing unidirectional and vertical communication dynamics from science to its public. however, these studies have fallen short in identifying what the production conditions that sustain this model are. analyzing the case of an educational booklet, this article seeks to deepen the understanding of what it is that defines the sast practice in colombia as deficitarian. this was achieved through an ethnographic content analysis of educational material, which allowed the identification of a number of language and graphic devices that, in the future, could become a reflexive guide in the design of new educational and communicative materials for the sast.
?Guerra espiritual evangélica o brujería indígena? Prácticas mágico-religiosas de los excombatientes paramilitares en contextos de guerra en Córdoba (Colombia)
Lozano Garzón,Liz Carolina;
Universitas Humanística , 2009,
Abstract: former paramilitary combatants of the department of córdoba (colombia) have a mix of beliefs in their magic-religious arsenal that include the use of the "ni?os en cruz" of the zenu (sinu) tribe to protect themselves from bullets in a fight, as well as the practice of evangelical exorcisms para counteract the effects of that same witchcraft, among others. these ambiguous behaviors are due to the fact that the cordoban tradition inherited a map of religious beliefs that were the product of colonial syncretization where the indigenous, at the same time that it is located at the base of the social pyramid, incarnates and serves the actions of the devil, to which the evangelical appears as a counter power. analyzing the existing tensions between the use of indigenous magic and the evangelical "spiritual war" between former paramilitary combatants of córdoba is the object of this article.
El incremento en la prescripción de antidepresivos: ?Una panacea demasiado cara?
Lozano Serrano,Carolina; Ortiz Lobo,Alberto;
Revista de la Asociación Espa?ola de Neuropsiquiatría , 2004, DOI: 10.4321/S0211-57352004000200007
Abstract: we study the rise of antidepressants prescribing and the cost increase in a health area in madrid. we use the national health system prescriptions from primary care and from specialities during 1999-2001. we analise the consequencies on economy (direct and indirect cost) and on health (temporary disability in the same time and in the same population because of mental disorders). we discuss also some social consequencies.
El incremento de la prescripción de antidepresivos: una panacea demasiado cara?.
Carolina Lozano Serrano,Alberto Ortiz Lobo
Revista de la Asociación Espa?ola de Neuropsiquiatría , 2004,
Abstract: Estudiamos cómo se ha incrementado la prescripción de antidepresivos y el gasto farmacéutico en un área de Madrid mediante las recetas del SNS realizadas tanto desde atención primaria como desde especializada durante los a os 1999- 2001. Analizamos las repercusiones económicas (costes directos e indirectos) y las clínicas (medido por las incapacidades laborales transitorias por causa psiquiátrica durante esos mismos a os y en la misma población). Discutimos algunas repercusiones a nivel social.
Letras, palabras y bloques
Pérez Lozano,Diego;
Cuadernos del Centro de Estudios en Dise?±o y Comunicaci?3n. Ensayos , 2011,
Abstract: the close relation that could be made between the evolution of the human being and the publishing universe demonstrates that to analyse the past allows to include the present and to anticipate themselves largely to the future. like anthropologists, the graphic designers observe and refect about conceptual and aesthetic changes in texts on the plane. on the other hand, we design exercises for students in order to build a solid foundation in publishing discipline, allowing then the application of certain graphical games that tie with other acquired knowledge.
Pertenencia inicial de descendientes a la empresa familiar
Lozano P,Melquicedec; Urbano,David;
Revista Venezolana de Gerencia , 2010,
Abstract: in the context of succession, this colombian case study examines the first full-time job that descendents have in their family?s business. furthermore, it describes the main propositions -satisfaction and commitment- that relate to this first full-time job in the family business. the methodology includes in-depth interviews with descendents from four family business cases; the information was later submitted to qualitative analysis, based on the triangulation concept and the resources and capacities theory. results of the study highlight satisfaction and commitment as two components of the initial membership; likewise, items that constitute each of these components were determined, thereby extending, conceptually, the panorama related to the continuity of family businesses. in conclusion, this study shows that the propensity to experience more satisfaction and commitment with the first full-time job is quite related to the type of environment the descendants perceive and the possibility of satisfying their motivations.
Pertenencia inicial de descendientes a la empresa familiar
Lozano P. Melquicedec,David Urbano
Revista Venezolana de Gerencia , 2010,
Abstract: En el contexto de la sucesión, el presente estudio de casos examina la pertenencia inicial de los descendientes a las empresas familiares colombianas. Adicionalmente se exponen las principales proposiciones que relacionan, satisfacción y compromiso, con ese primer trabajo a tiempo completo en la empresa familiar. La metodología considera entrevistas en profundidad a descendientes de cuatro casos de empresas familiares, cuya información se somete posteriormente a un análisis cualitativo apoyándose en el concepto de triangulación y la teoría de recursos y capacidades. Los resultados del estudio resaltan la satisfacción y el compromiso como los dos componentes de la pertenencia inicial; igualmente, se determinan los ítems que conforman cada uno de estos componentes, lo que amplía conceptualmente el panorama relacionado con la continuidad de las empresas familiares. Las conclusiones muestran que la propensión a tener más satisfacción y compromiso con el primer cargo está muy relacionada con el tipo de ambiente que perciben los descendientes y con la posibilidad de satisfacer sus motivaciones.
Sostenibilidad fiscal en Colombia: una mirada hacia el mediano plazo
Ignacio Lozano,Carolina Ramírez,Alexander Guarín
Perfil de Coyuntura Económica , 2007,
Abstract: en este documento se evalúan los factores que determinaron la evolución del coeficiente de deuda pública a PIB en Colombia desde 1994 y se hacen pronósticos sobre su evolución en el mediano plazo (a 2011). El análisis se fundamenta en el principio de la Restricción Presupuestaria Intertemporal RPI para el gobierno general, el cual también se utiliza para hacer ejercicios de sensibilidad. Los resultados sobre las prospectivas indican que, bajo un escenario básico, la tendencia decreciente del coeficiente de deuda pública a PIB registrada en los últimos a os se puede revertir a partir de 2008, hasta ascender a 51% en 2011. De otro lado, los ejercicios de vulnerabilidad indican que un aumento de 80 puntos básicos en la tasa de interés, sobre el escenario básico, aumenta el coeficiente de deuda en 2 puntos del producto al final del período. Una caída de 1,3% sobre las proyecciones del crecimiento real, eleva el coeficiente en 9 puntos del producto; un incremento de 6% sobre los pronósticos de devaluación nominal incrementa el coeficiente en 5 puntos y un deterioro del balance primario en 0,8% del PIB, la eleva en 4 puntos del producto al final del período.
Anastomosis Martin-Gruber: Aspectos anatómicos y electrofisiológicos Martin-Gruber Anastomosis: Anatomical and electrophysiological issues
Esperanza Herrera,Anaya Carolina,Adriana Marisela Abril,Wilson Mauricio Lozano
Revista de la Universidad Industrial de Santander. Salud , 2009,
Abstract: La anastomosis de Martin Gruber (AMG) es una de las variaciones anatómicas más frecuentes que consiste en la contribución de axones motores desde el nervio mediano hacia el ulnar en el antebrazo. Factores filogenéticos y genéticos se asocian con la aparición de la AMG. Entre tanto, otros factores como género, raza o lateralidad no parecen tener importancia en la aparición de la rama comunicante. Las clasificaciones de la AMG han sido establecidas según los hallazgos anatómicos, electrofisiológicos e histológicos y también según el lugar de origen y destino de la anastomosis. El objetivo de este artículo es revisar los factores asociados a la presencia de la AMG, así como las descripciones y clasificaciones anatómicas y electrofisiológicas. Esta revisión aporta información relevante para el reconocimiento de los patrones clásico y variante de inervación de la musculatura intrínseca de la mano. Dicho reconocimiento permite diagnosticar e intervenir apropiadamente las alteraciones de los nervios periféricos de la extremidad superior. Salud UIS 2009; 41: 157-168 The Martin Gruber Anastomosis (MGA) is one of the most common anatomical variants of the upper limb, which consists of motor axons crossing through the forearm from the median nerve to the ulnar nerve. Phylogenetic and hereditary factors have been associated whit the MGA. However, gender, race, or laterality, do not seem to have importance in the appearance of the communicating branch. The MGA has been categorized according to findings in anatomy, electrophysiology and histology, in relation to the source and destination of the communicating branch. The aim of this article is to review the factors related to the presence of MGA, as well as the descriptions and classifications according to anatomy and electrophysiology. This revision contributes with important information relevant to the recognition of differences between the classic pattern and the variant pattern of the innervations of the intrinsic muscles of the hand. Such recognition allows a more appropriate diagnostic and intervention of disorders of the peripheral nerves in the upper limb. Salud UIS 2009; 41: 157-168
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