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Search Results: 1 - 10 of 9946 matches for " Carolina Montoya "
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Sobre el cuidado: entre filosofía y medicina
Montoya Vargas,Carolina Andrea;
Revista Colombiana de Psiquiatría , 2006,
Abstract: philosophy seeks the health of the soul. to look after the soul with intense and constant care is what philosopher does; therefore, the true name of philosopher is therapist. in the origin if his knowledge lays the fact that life has to be completed before death; the self has to be fully satisfied before its end. this is the reason that drives us towards meditation. care of the self is a permanent duty that has to last our entire life, because its essential form is the knowledge of the self. thus, for both greeks and romans, the self means a set of methods whose purpose is life and the exercise of truth.
Sobre el cuidado: entre filosofía y medicina On caring: between medicine and philosophy
Carolina Andrea Montoya Vargas
Revista Colombiana de Psiquiatría , 2006,
Abstract: La filosofía vela por las almas. Velar por el alma con intenso y asiduo cuidado es lo propio del filósofo; por lo tanto, el verdadero nombre del filósofo es terapeuta. Su saber parte de que hay que consumar la vida antes de la muerte, lograr la saciedad completa de sí. Esta razón nos impulsa a meditar. El cuidado de cada uno es una obligación permanente que debe extenderse durante toda la vida, ya que su forma fundamental es el conocimiento de sí mismo. Tanto para los griegos como para los romanos, el cuidado designa un conjunto de procedimientos, cuyo fin es vida y la acción de la verdad. Philosophy seeks the health of the soul. To look after the soul with intense and constant care is what philosopher does; therefore, the true name of philosopher is therapist. In the origin if his knowledge lays the fact that life has to be completed before death; the self has to be fully satisfied before its end. This is the reason that drives us towards meditation. Care of the self is a permanent duty that has to last our entire life, because its essential form is the knowledge of the self. Thus, for both Greeks and Romans, the self means a set of methods whose purpose is life and the exercise of truth.
The almost-entropic regions are not semialgebraic
Carolina Mejia,J. Andres Montoya
Mathematics , 2015,
Abstract: We prove that the almost-entropic region of order four is not semialgebraic, we get as a corollary the well-known Theorem of Matus, which asserts that this region is not polyhedral
DEGRADABILIDAD DE UN POLíMERO DE ALMIDóN DE YUCA
Ruiz,Gladys; Montoya,Carolina; Paniagua,Marco;
Revista EIA , 2009,
Abstract: the use of polymeric materials has been increased due to their good properties and low cost. as a result, the amount of plastic that gets to landfills has increased until 30 %. as a solution to this problem, biodegradable polymers have been developed; and compared to synthetic polymers, they are degraded in the environment when exposed to certain conditions in a shorter period. one of the raw materials that is widely used in the manufacturing of biodegradable materials is starch. in this research study, the biodegradability of a polymer made of tapioca starch has been studied. to determine this, the polymer has been characterized and exposed to salt and fresh water, sunlight and a simulation of a landfill for a series of periods. to determine its biodegradability, percentage of mineralization was measured as well as changes in tensile properties, superficial morphology, ir absorption and weight loss depending on the type of environment. from the results it was found that the polymer is degraded by being subjected to simulated landfill, salt water and to a lesser extent in sunlight, while in fresh water it does not get degraded.
Los reales efectivos de Schanuel
Carolina Mejía,J. Andrés Montoya
Matemáticas : Ense?anza Universitaria , 2007,
Abstract: En este art?culo se presenta y analiza una construcci?n de los reales debida a S. Schanuel. La construcci?n tiene virtudes formales, como lo es, el construir el campo de los reales, directamente desde la estructura de grupo abeliano de los enteros sin requerir la construcci?n previa del campo de los n?meros racionales. Y tiene ventajas computacionales siendo como es una construcci?n e ciente y que es f?cil hacer efectiva. Una versi?n efectiva de la construcci?n es presentada y analizada en el art?culo.
DEGRADABILIDAD DE UN POLíMERO DE ALMIDóN DE YUCA DEGRADABILIDADE DE UM POLíMERO DE AMIDO DE MANDIOCA DEGRADABILITY OF A TAPIOCA STARCH POLYMER
Gladys Ruiz,Carolina Montoya,Marco Paniagua
Revista EIA , 2009,
Abstract: El uso de materiales poliméricos se ha incrementado debido a sus buenas propiedades y bajo costo, como resultado, la cantidad de estos materiales que llega a los rellenos sanitarios ha aumentado hasta llegar hoy en día al 30 %. Como una solución a este problema, se han desarrollado los polímeros biodegradables, que en comparación con los sintéticos son degradados en el ambiente al ser expuestos a ciertas condiciones en un tiempo más corto. En esta investigación se estudia la degradabilidad de un polímero fabricado con almidón de yuca, para esto se hace una caracterización del material y se somete a diferentes medios como agua dulce y salada, luz solar y la simulación de un relleno sanitario por varios períodos. Para determinar la degradabilidad del material se midió el porcentaje de mineralización, así como cambios en las propiedades mecánicas, morfología superficial, absorbancia en IR y pérdida de peso, dependiendo del tipo de medio. De los resultados obtenidos se encontró que el polímero es degradado al estar sometido a la simulación de relleno sanitario, agua salada y, en menor medida, a la luz solar, en tanto que en el agua dulce el polímero no se degrada. O uso de materiais poliméricos tem aumentado devido a suas boas propriedades e baixo custo, como resultado, a quantidade destes materiais que chega nos aterros sanitários subiu até chegar hoje em dia a 30 %. Como uma solu o a este problema, se desenvolveram os polímeros biodegradáveis, que em compara o com os sintéticos s o degradados no ambiente ao ser expostos a certas condi es em um tempo mais curto. Nesta pesquisa se estuda a degradabilidade de um polímero fabricado com amido de mandioca, para isto se faz uma caracteriza o do material e se submete a diferentes meios como água doce e salgada, luz solar e a simula o de um aterro sanitário por vários períodos. Para determinar a degradabilidade do material se mediu a porcentagem de mineraliza o, assim como mudan as nas propriedades mecanicas, morfologia superficial, absorvancia em IV e perda de peso, dependendo do tipo de meio. Dos resultados obtidos se encontrou que o polímero é degradado ao estar submetido à simula o de aterro sanitário, água salgada e, em menor medida, à luz solar, enquanto na água doce o polímero n o se degrada. The use of polymeric materials has been increased due to their good properties and low cost. As a result, the amount of plastic that gets to landfills has increased until 30 %. As a solution to this problem, biodegradable polymers have been developed; and compared to synthetic polymers, they are degraded in the
Estudio de alteraciones cromosómicas y su relación con el crecimiento in vitro en células de meningiomas
Isaza,Carolina; Escobar,Martha Isabel; Montoya,Antonio; Sánchez,Jairo?;
Colombia Médica , 2006,
Abstract: objectives: to demonstrate the frequency of chromosomic alterations and their relationship to the growth velocity of in vitro meningioma cells cultures. data obtained in previous studies have shown that there is a kinship between chromosomic alterations, the risk of recurrence and tumor stage. materials and methods: samples taken during meningioma resection surgery from any location were cultured. the samples were obtained from patients at the university hospital, the rafael uribe clinic and private clinics, previous informed consent either from patients or their relatives. cell cultures were performed, speed of growth was measured, and the karyotype was obtained in order to define the chromosomic alterations present in each tumor. results: 47% of the meningiomas studied showed different chromosomic alterations or besides monosomy of the chromosome 22 that according to previous publications are associated to tumoral progression and represent a recurrence risk greater than 10%. conclusions: the cytogenetic studies and the in vitro cellular growth velocity of the tumoral cells could be excellent complements of the surgical result and the pathology study, contributing to establish the risk of recurrence, so helping to define the patient?s prognosis.
ALTERACIONES EN LA PRODUCCIóN mRNA DE ENZIMAS INTESTINALES DE CERDOS DURANTE VARIOS PERíODOS POSDESTETE
MONTOYA R.,CAROLINA; LóPEZ H.,ALBEIRO; PARRA S.,JAIME;
Biotecnología en el Sector Agropecuario y Agroindustrial , 2012,
Abstract: the aim of this study was to determine the gene expression of enzymes to enterocyte level of pigs during post-weaning periods.the experiment was conducted in san pabloproductioncenter of the universidad nacional de colombia (medellín) with 16 weaned pigs at 21 days of age.the animals were fed for 10 days with a basal diet with milk and some of its derivatives, and that also fulfilled all the nutritionals minimums. pigs were sequentially slaughtered on days one, five, seven, and 10 days after weaning.complete extraction of small intestine was realized, which was divided into three sections (duodenum, jejunum and ileum). the gene expression of digestive enzymes by rt-pcr was evaluated.the statistical design used was completely at random. for intestinal enzymes significant decreases were showed, where on fifth day post-weaning presented the lowest values (p<0.01). between one and 10 days post-weaning there were differences (p<0.01). the duodenum showed the highest values of gene expression (p<0.01). early weaning alters molecular expression of enzymes to enterocyte level, causing the decrease of intestinal absorption of nutrients, and probably the presentation of post-weaning diarrhea syndrome.
Modelado y simulación del medidor de la sensación instantanea de flicker del flickermetro de la norma iec-61000-4-15 mediante redes neuronales
Montoya Andrade,Dan El Andrés; Regoli,Carolina;
Universidad, Ciencia y Tecnología , 2009,
Abstract: la norma iec-61000-4-15 plantea el dise?o de un medidor de flicker de cinco etapas. una primera etapa de adaptación de la se?al, una segunda etapa de demodulación de la fluctuación de tensión, una tercera etapa de filtros ponderadores que simulan la respuesta en frecuencia a las fluctuaciones del sistema de visión humana, una cuarta etapa de premediación cuya salida representa la sensación instantánea de flicker, y una quinta etapa que realiza un análisis estadístico del nivel de flicker permitiendo el cálculo de parámetros de evaluación significativos (pst y plt). el objetivo del presente trabajo es modelar y simular hasta la cuarta etapa el flickermetro de la norma iec-61000-4-15 mediante redes neuronales. para esto se cuenta con un modelo de simulación del flickermetro realizado en simulink desarrollado y probado según el estándar iec-61000-4-15. este modelo sirvió de referencia para efectos de validación y a través del mismo se obtuvieron los datos con los cuales se entrenó y probó la red neural. mediante el estudio comparativo realizado se pudo concluir que el modelo neural representa satisfactoriamente al flickermetro de la norma iec-61000-4-15.
CONSORCIOS MICROBIANOS: UNA METáFORA BIOLóGICA APLICADA A LA ASOCIATIVIDAD EMPRESARIAL EN CADENAS PRODUCTIVAS AGROPECUARIAS
OCHOA CARRE?O,DIANA CAROLINA; MONTOYA RESTREPO,ALEXANDRA;
Revista Facultad de Ciencias Económicas: Investigación y Reflexión , 2010,
Abstract: this article provides a new view of enterprise association model in agricultural production chains, through a biological metaphor proposal of microbial consortia. it collects various implementation cases of the metaphor as a methodology for organization study and their problems, as well as, nature, characteristics and fundaments of both microbial consortia and agricultural production chains. a metaphor is formulated between this two knowledge fields, based on the principles of general system theory. the document concludes exposing advantages and limitations of this conceptual methodology for agricultural production chains case.
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