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Search Results: 1 - 10 of 347295 matches for " Miguel; Torres S "
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Fibromialgia
Luís Miguel Torres Morera
Revista de la Sociedad Espa?ola del Dolor , 2008,
Abstract:
Congreso Nacional Bioquímico CUBRA X - 2009: Consideraciones Científicas y Profesionales
Juan Miguel Castagnino,Alberto Nicolás Torres
Acta bioqu?-mica cl?-nica latinoamericana , 2009,
Abstract:
Decíamos ayer, decimos hoy
Juan Miguel Castagnino,Alberto Nicolás Torres
Acta bioqu?-mica cl?-nica latinoamericana , 2008,
Abstract:
Representación Ontológica Basada en Descriptores Semánticos Aplicada a Objetos Geográficos
Torres-Ruiz, Miguel Jesús;Levachkine, Serguei;
Computación y Sistemas , 2009,
Abstract: in this dissertation the geonto-met methodology is presented. it is oriented to formalize the geographic domain conceptualization according to the specifications of the instituto nacional de estadística, geografía e informática (inegi). the main goal is to provide semantic descriptions, which represent the properties and relations describing so the behavior of geographic objects and taking into account these features directly from the geographic domain ontology. the thesis also establishes a solid basis for future automatic interpretations of geographic regions oriented to decision making process. in other words, the geographic domain conceptualization can be used to generate new knowledge in an automatic way and make spatial analysis more accurate. having a semantic description of a geographic domain allows establishing the guidelines of a spatial reasoning. that is, if the behavior of geographic objects involved in an ontology partition is known, then one can understand and interpret the semantics that they represent and explore the implicit inference from the conceptualization. summing up, this work presents a methodology allowing integrate and share geospatial information. geonto -met provides feasible solutions towards these and other related issues, such as compact data by alternative structures of knowledge representation and avoid the ambiguity of terms, using a domain conceptualization.
Selección de especies le?osas en un bosque seco tropical por vacunos adultos usando análisis histológico fecal
Benezra S,Miguel; Gerardo,Cecconello; Camacho de Torres,Fanny;
Zootecnia Tropical , 2003,
Abstract: summary to determine the selection of forage woody species foliage in the diet of dual purpose cows handled as a agro forestry system in a tropical dry forest during the day and in grass paddocks during the night, in the rainy season, a histological techniques of the fecal analysis was used, it was compared the epidermal fragments present in the feces with the epidermal reference patterns elaborated with the foliage (adaxial and abaxial epidermis) of 17 species that for visual observation were consumed by the animals. a group of 28 dual purpose lactating cows was used. for the coloration of the epidermal fragments toluidina blue (1%) was used, and then for its identification the characteristics anatomical structures were taken in to account (presence of hair or trichomes, epidermal typical cells and size and form of the stomas). there was demonstrated that 12 reference species appeared in animals feaces, where apidosperma cuspa resulted with the higher relative frequency, 15.5% of their fragments appeared in the feces. the possibly fact that some species could not be identified in the feces, it could be related to the absence of vegetable protective elements in its morphology during the traffic in the ruminants digestive tract or to the lack of refringence to the used coloring. the relative frequency in feces of the woody species turned out to be higher (83%) to the value found for the grass (17%) in these management conditions. the foliage of the tropical dry forest is an alternative resource for ruminant feeding.
Isolated Bulbar Conjunctival Kaposi’s Sarcoma as a Primary Presentation of AIDS: A Case Report
Sofia Maia,Miguel Gomes,Luís Oliveira,Paulo Torres
Case Reports in Ophthalmological Medicine , 2013, DOI: 10.1155/2013/469195
Abstract: Kaposi’s sarcoma (KS) is a malignant vascular tumor, caused by the human herpesvirus 8. It is one of the commonest tumors in human immunodeficiency virus (HIV) patients and not uncommonly the first manifestation of acquired immunodeficiency syndrome (AIDS). Case. We present a case of an isolated bulbar conjunctival KS on a 43-year-old HIV positive male, with no other lesions. Excision and cryotherapy were performed, and the patient remains free of lesions to date. Conclusion. Isolated bulbar conjunctival KP is an unusual site for its initial presentation and must be kept in mind in HIV positive patients. 1. Introduction Ocular manifestations of acquired immunodeficiency syndrome (AIDS) are varied, affecting almost all structures of the eye. The posterior segment is mainly affected; however, less frequently ocular adnexa, anterior segment, orbit, and neuroophthalmic lesions can also occur. Human immunodeficiency virus- (HIV-) associated disease occurs in 50–90% of patients in the course of their illness [1]. Kaposi’s sarcoma (KS) is the most common lesion of the anterior segment in these patients [2]. It is an AIDS defining illness and affects about 30% of the patients with HIV [2]. It may indicate worsening of the underlying disorder appearing in patients with CD4 count <500?cels/μ [1]. KS is a malignant neoplasm of the vascular endothelium that can affect the eyelids, the lacrimal sac or gland, the orbit, and bulbar or palpebral conjunctiva. Isolated KS of the conjunctiva was first reported in 1967 [3]. If it affects the conjunctiva, it appears as a bright red fleshy to violaceous nodular mass, commonly seen in the fornix [2, 4]. We report a clinical case of a patient with an isolated conjunctival KS and its treatment. 2. Case Report A 43-year-old HIV positive male since August 2010 presented with a three-month history (since December 2010) of a growing mass in the bulbar conjunctiva of the right eye. The patient had previously undergone right eye cataract extraction with insertion of intraocular lens in 1992 in another medical institution. On ophthalmic examination, the best corrected visual acuity was 20/25 on his right eye. The biomicroscopy revealed two reddish nodular lesions localized in the superior and inferior nasal bulbar conjunctiva, loosely connected to the underlying tissue (Figure 1). Fundoscopy was normal. The left eye showed no abnormalities. Screening and confirmatory tests were positive for HIV with CD4+ lymphocyte cell count of 154?cells/mm3. Figure 1: Preoperative biomicroscopy. An excisional biopsy and cryotherapy on the
MULTIFUNCTIONAL AGRICULTURE AND INTEGRATION OF FARMING PRODUCTION SYSTEMS WITHIN AGRIBUSINESS CHAINS
Cotes Torres,Alejandro; Urbina Rojas,Nicolás; Cotes Torres,José Miguel;
Revista Facultad Nacional de Agronomía, Medellín , 2007,
Abstract: nowadays is recognized that the agriculture goes beyond that only the food production, so the concept of agricultural multifunctionality is introduced in order to describe this fact, recovering the true sense of the agriculture, and classifying its functions in three groups: 1) food security, 2) environment, and 3) socio-cultural. in each one of these functions, the agricultural production systems generate two categories of products: a) the traditional outputs (commodities), such as food, fibers and energy, and b) the non traditional outputs (non-commodities), which included aspects related with the environment and territory, employment, human resources and work, food safety and quality, animal welfare, food security and economic autonomy of the rural regions among others. finally, we explore the evolution that agricultural production systems have had from a productivist focus toward a model where the new paradigm is the multifunctional agriculture, where the developing countries could have an important place.
MULTIFUNCTIONAL AGRICULTURE AND INTEGRATION OF FARMING PRODUCTION SYSTEMS WITHIN AGRIBUSINESS CHAINS LA AGRICULTURA MULTIFUNCIONAL Y LA INTEGRACION DE LOS SISTEMAS DE PRODUCCION AGROPECUARIA DENTRO DE LAS CADENAS AGROINDUSTRIALES
Alejandro Cotes Torres,Nicolás Urbina Rojas,José Miguel Cotes Torres
Revista Facultad Nacional de Agronomía, Medellín , 2007,
Abstract: Nowadays is recognized that the agriculture goes beyond that only the food production, so the concept of agricultural multifunctionality is introduced in order to describe this fact, recovering the true sense of the agriculture, and classifying its functions in three groups: 1) food security, 2) environment, and 3) socio-cultural. In each one of these functions, the agricultural production systems generate two categories of products: a) the traditional outputs (commodities), such as food, fibers and energy, and b) the non traditional outputs (non-commodities), which included aspects related with the environment and territory, employment, human resources and work, food safety and quality, animal welfare, food security and economic autonomy of the rural regions among others. Finally, we explore the evolution that agricultural production systems have had from a productivist focus toward a model where the new paradigm is the multifunctional agriculture, where the developing countries could have an important place. El presente artículo inicialmente aborda el concepto de multifuncionalidad de la agricultura, donde encontramos que actualmente se reconoce que la agricultura va mas allá de la simple producción de alimentos, clasificando sus principales funciones en tres ejes temáticos: 1) seguridad alimentaria, 2) medio ambiente, y 3) socio-cultural. En cada una de estas funciones se evidencia que los sistemas de producción agropecuaria generan dos categorías de productos: a) productos tradicionales (“commodities”), como son los alimentos, las fibras y la energía, y b) productos no tradicionales (“non-commodities”), los cuales incluyen aspectos relacionados con el medio ambiente y territorio, la generación de empleo, el manejo del recurso humano y de las condiciones laborales, la gestión de la calidad de los alimentos, el bienestar animal, la autonomía económica de las regiones rurales y su seguridad alimentaria, entre otros. Finalmente, se tiene en cuenta la evolución que han tenido los sistemas de producción agropecuaria pasando de un enfoque productivista, hacia un modelo donde el nuevo paradigma es la agricultura multifuncional, donde los países en vías de desarrollo pueden tener un papel importante.
Numerical Simulation of an Argon Stirred Ladle with Top and Bottom Injection  [PDF]
Sofia Torres, Miguel A. Barron
Open Journal of Applied Sciences (OJAppS) , 2016, DOI: 10.4236/ojapps.2016.613075
Abstract: The stirring of a molten steel ladle with argon injection through a top submerged lance and a bottom nozzle is numerically studied here through Computational Fluid Dynamics (CFD) simulations. Three lance submergence depths and three injection velocities are considered in the CFD numerical experiments. The turbulent dissipation rate is employed to characterize the stirring phenomenon. The mixing times are determined from the gas flow rate, ladle geometry and bath depth using an empirical correlation.
A Computational Clonal Analysis of the Developing Mouse Limb Bud
Luciano Marcon ,Carlos G. Arqués,Miguel S. Torres,James Sharpe
PLOS Computational Biology , 2011, DOI: 10.1371/journal.pcbi.1001071
Abstract: A comprehensive spatio-temporal description of the tissue movements underlying organogenesis would be an extremely useful resource to developmental biology. Clonal analysis and fate mappings are popular experiments to study tissue movement during morphogenesis. Such experiments allow cell populations to be labeled at an early stage of development and to follow their spatial evolution over time. However, disentangling the cumulative effects of the multiple events responsible for the expansion of the labeled cell population is not always straightforward. To overcome this problem, we develop a novel computational method that combines accurate quantification of 2D limb bud morphologies and growth modeling to analyze mouse clonal data of early limb development. Firstly, we explore various tissue movements that match experimental limb bud shape changes. Secondly, by comparing computational clones with newly generated mouse clonal data we are able to choose and characterize the tissue movement map that better matches experimental data. Our computational analysis produces for the first time a two dimensional model of limb growth based on experimental data that can be used to better characterize limb tissue movement in space and time. The model shows that the distribution and shapes of clones can be described as a combination of anisotropic growth with isotropic cell mixing, without the need for lineage compartmentalization along the AP and PD axis. Lastly, we show that this comprehensive description can be used to reassess spatio-temporal gene regulations taking tissue movement into account and to investigate PD patterning hypothesis.
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