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Search Results: 1 - 10 of 9997 matches for " Diana Marcela Ospina Monsalve "
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DETERMINACIóN DE LA FUERZA DE LA FRACTURA SUPERFICIAL Y FUERZA DE FIRMEZA EN FRUTAS DE LULO (Solanum quitoense x Solanum hirtum)
Ospina Monsalve,Diana Marcela; Ciro Velásquez,Héctor José; Aristizábal Tórres,Iván Darío;
Revista Facultad Nacional de Agronomía, Medellín , 2007,
Abstract: a rheological characterization of lulo fruits (solanum quitoense x solanum hirtum) by using the test of unidirectional compression to firmness and fracture tests, according to two degrees of commercial maturity (inmature and mature) and four post harvesting times (0, 3, 6, 9 days) was done. additionally physical and chemical properties were determined such as brix degrees, ph and colour. the fruits were subjected to unidirectional compression by a texture analyzer and loading rate of 1 mm?s. the tests of fracture were established in two loading senses (longitudinal and transversal) and the test of firmness was determined in two angles of incidence. statistical analyses indicated that the rheological behavior of the fruit to fracture and firmness depended upon the post-harvesting time conditions and physiological condition (maturation), situation that shows the anisotropic and viscoelastic behavior of the product. the values of the indicated that the inmature fruit presents higher mechanical resistance to the compression with respect to the mature fruit. nevertheless, the product present more resistance to mechanical fracture in longitudinal position showing mean values to the inmature fruits in longitudinal and transversal positions of 226 n and 84, 8 n, respectively. the mature fruits showed mean values of fracture force of 180 n and 68,5 n to longitudinal and transversal loading directions. the maximum firmness force to the pulp in mature fruits was of 1,4 n and 1,0 n to inmature fruit. the maximum force measured in the exocarpy showed a mean value of 14,4 n and 15,7 n to mature and inmature fruits respectively.
DETERMINACIóN DE LA FUERZA DE LA FRACTURA SUPERFICIAL Y FUERZA DE FIRMEZA EN FRUTAS DE LULO (Solanum quitoense x Solanum hirtum) DETERMINATION OF SURFACE FRACTURE AND FIRMNESS FORCE IN LULO FRUIT (Solanum quitoense x Solanum hirtum)
Diana Marcela Ospina Monsalve,Héctor José Ciro Velásquez,Iván Darío Aristizábal Tórres
Revista Facultad Nacional de Agronomía, Medellín , 2007,
Abstract: Se hizo la caracterización reológica de la fruta de lulo (Solanum quitoense x Solanum hirtun) a través de la respuesta mecánica bajo ensayos de compresión unidireccional a pruebas de firmeza y fractura, de acuerdo a dos grados de madurez comercial (pintón y maduro) y tiempos de poscosecha (0, 3, 6, 9 días). Adicionalmente se determinaron propiedades físico-químicas tales como concentración de azúcares, pH y color. Las frutas fueron sometidas a ensayos de compresión unidireccional usando un analizador de textura a una velocidad de deformación de 1 mm s. Los ensayos para la prueba de fractura se realizaron según dos sentidos de carga (longitudinal y transversal) y la prueba de firmeza se determinó en dos ángulos de incidencia. Los resultados mostraron que el comportamiento reológico de la fruta a ensayos de fractura y firmeza es altamente dependiente del tiempo transcurrido después de la cosecha de la fruta y condiciones fisiológicas (grado de madurez), situación ésta que refleja el comportamiento visco elástico y anisotrópico del producto. Los valores de la fuerza de fractura indicaron que la fruta pintona resiste mayor carga de aplastamiento con respecto al fruta madura. La fruta resiste más carga en sentido longitudinal que transversal, mostrando valores para frutas pintonas en posición longitudinal de 226 N y en posición transversal de 84,8 N, y para las frutas maduras se encontró una fuerza de fractura media en posición longitudinal de 180 N y en posición transversal de 68,5N. Para la fuerza de firmeza media (pulpa) el valor máximo para frutas maduras fue de 1,4 N, y para frutas pintonas de 1,1 N. La fuerza de firmeza máxima (epicarpio) tomó como valores máximos para las frutas maduras 14,4 N y para los frutas pintonas de 15,7 N. A rheological characterization of lulo fruits (Solanum quitoense x Solanum hirtum) by using the test of unidirectional compression to firmness and fracture tests, according to two degrees of commercial maturity (inmature and mature) and four post harvesting times (0, 3, 6, 9 days) was done. Additionally physical and chemical properties were determined such as Brix degrees, pH and colour. The fruits were subjected to unidirectional compression by a texture analyzer and loading rate of 1 mm s. The tests of fracture were established in two loading senses (longitudinal and transversal) and the test of firmness was determined in two angles of incidence. Statistical analyses indicated that the rheological behavior of the fruit to fracture and firmness depended upon the post-harvesting time conditions and physiological condition (m
Sobre duelos, enlutados y duelistas
Ospina Rodríguez Diana Marcela
Desde el Jardín de Freud , 2011,
Abstract:
Efecto antinociceptivo de Critoniella acuminata, Physalis peruviana y Salvia rubescens
Mu?oz,Carol E; Vergel,Nadezdha E; Cabral,Pablo; Aragón,Diana Marcela; Ospina,Luis Fernando-;
Revista Colombiana de Ciencias Químico - Farmacéuticas , 2009,
Abstract: the antinociceptive effect of extracts, fractions and compounds of critoniella acuminata, physalis peruviana and salvia rubescens were evaluated by the follow methods: hot plate test, acetic acid induced abdominal writhing and formalin test. the fraction of critoniella acuminata at doses of 100mg/kg p.o. exhibited antinociceptive effect in the hot plate test; while physalis peruviana fraction at doses of 100 mg/kg p.o., showed an antinociceptive effect against the pain chemically induced. this fraction produced 40% inhibition of the acetic acid induced writhing (acute visceral nociception) and the licks during phase ii (acute inflammatory nociception) of the formalin test. the findings of this experimental study suggest that fractions of critoniella acuminata and physalis peruviana possess antinociceptive activity with opioid and nsaid-like mechanisms respectively.
Raza, sexualidad y etnicidad. Ciudadanía y multiculturalismo en América Latina
Amador Ospina Marcela
Maguaré , 2008,
Abstract: S.R.
Statistical Prediction of Wet and Dry Periods in theComahue Region (Argentina)  [PDF]
Marcela H. González, Diana Dominguez
Atmospheric and Climate Sciences (ACS) , 2012, DOI: 10.4236/acs.2012.21004
Abstract: General features of rainy season with excess or deficits are analyzed using standardized precipitation index (SPI) in Limay and Neuquen River basins. Results indicate that most of dry and wet periods persist less than three months in both basins. Furthermore, an increase of rainfall variability over time is observed in the Limay river basin but it is not detected in the Neuquen river basin. There is a tendency for wet (dry) periods to take place in El Ni?o (La Ni?a) years in both basins. Rainfall in both basins, have an important annual cycle with its maximum in winter. In addition, possible causes of extreme rainy seasons over the Limay River Basin are detailed. The main result is that the behavior of low level precipitation systems displacing over the Pacific Ocean in April influences the general hydric situation during the whole rainy season. In order to establish the existence of previous circulation patterns associated with interannual SPI variability, the composite fields of wet and dry years are compared. The result is that rainfall is related to El Ni?o- Southern Oscillation (ENSO) phenomenon and circulation over the Pacific Ocean. The prediction scheme, using multiple linear regressions, showed that 46% of the SPI variance can be explained by this model. The scheme was validated by using a cross-validation method, and significant correlations are detected between observed and forecast SPI. A polynomial model is used and it little improved the linear one, explaining the 49% of the SPI variance. The analysis shows that circulation indicators are useful to predict winter rainfall behavior.
La importancia de la obligación de información en las relaciones financieras de consumo. Una aproximación económica y jurídica
Monsalve Caballero,Vladimir; Rodado Barreto,Diana Paola;
Revista de Derecho , 2010,
Abstract: this article aims to establish the economic and legal fundament of the obligations and duties of information, which assist the parties in the different stages of the contractual iter (gestation, consummation, execution) when the issue of law 1328 of 2009 which sets out regulations on financial matters, insurance, securities market and other provisions. in turn, aims to demonstrate how information is an effective mechanism to encourage or rebalance the inequalities between individuals, lowers transaction costs and is a protective measure of the weak part of the contractual relationship in financial activity.
La importancia de la obligación de información en las relaciones financieras de consumo. Una aproximación económica y jurídica
Vladimir Monsalve Caballero,Diana Paola Rodado Barreto
Revista de Derecho , 2010,
Abstract: Este artículo tiene por objeto establecer el fundamento económico y jurídico de las obligaciones de información que tienen las entidades financieras con los consumidores en las diferentes etapas del iter contractual (gestación, consumación, ejecución) con ocasión de la expedición de la Ley 1328 de 2009, por la cual se dictan normas en materia financiera, de seguros, del mercado de valores y otras disposiciones. A su vez, pretende demostrar cómo la información es un mecanismo efectivo que fomenta o reequilibra las desigualdades existentes entre los sujetos, disminuye los costos de transacción y es una medida protectora de la parte débil de la relación contractual en la actividad financiera.
LA HISTORIA Y LAS RELACIONES INTERNACIONALES: DE LA HISTORIA INTERNACIONAL A LA HISTORIA GLOBAL
rojas,diana marcela;
Historia Crítica , 2004,
Abstract: in exploring the connections between international relations and history, we find a link that contributes to the redefinition of the discipline itself. in fact, international relations as a rational discourse on one aspect of the social sphere constitutes a historical object in itself. the aim of the article is to sitúate ir on its historical voyage in order to identify the development of three different international-system models throughout the course of the past three centuries. this overview leads us from a history between nations to a world history and, finally, to a global history, the nature of which allows us to outline certain coordinates in the international scenario at the dawn of the 21st century and indicate the elements that make the international idea lose its specificity and confronts us with the challenge of reformulating our own understanding of today's world.
Búsqueda de empleo y duración del desempleo en el área metropolitana de Cali: un recuento para los segundos trimestres de 2009 y 201
Jiménez,Diana Marcela;
Sociedad y Economía , 2012,
Abstract: employed and unemployed mainly used the informal channels of job search to find job. your choice is consistent with these strategies are the most efficient, to relate to lower unemployment durations, and the most effective in terms of allowing a jobseeker finding a job. with information of geih, for the metropolitan area of cali in the seconds quarters of 2009 and 2010, found that the formal channels of search job are less efficient that the informal channel but it is most efficient that the moderate informal channel
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