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Search Results: 1 - 10 of 464450 matches for " Tania; Echavarría Danger "
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Morbilidad por trastornos del movimiento en la consulta de Neurología Morbidity due to movement disorders in the Neurology Department
Mónica Rodríguez Montalbán,Osiel Gámez Rodríguez,Tania Hernández Silva,Sergio Echavarría Danger
MEDISAN , 2012,
Abstract: Se realizó un estudio observacional, descriptivo y transversal de 175 pacientes con trastornos del movimiento que asistieron a la Consulta de Neurología del Hospital General Docente "Dr. Juan Bruno Zayas Alfonso" desde el 2007 hasta el 2010, con vistas a describir la morbilidad en estos. Dichas afecciones iniciaron durante la quinta y sexta décadas de la vida en la mayoría de los integrantes de la casuística, con una frecuencia superior de la enfermedad de Parkinson, el temblor esencial y las distonías, y prevalencia del sexo masculino y el color de la piel mestizo. La electromiografía de los músculos agonistas y antagonistas evidenció el predominio del temblor de reposo y la disfunción en la inhibición recíproca, sobre todo en la enfermedad de Parkinson. An observational, descriptive and cross-sectional study of 175 patients with movement disorders who attended the Neurology Department in "Dr. Juan Bruno Zayas Alfonso" Teaching General Hospital was carried out from 2007 to 2010, aimed at describing the morbidity in them. These disorders began during the fifth and sixth decades of life in most of the members of the case material, with a higher frequency of Parkinson disease, the essential tremor and dystonias, and prevalence of the male sex and half-bred skin. The electromyography of the agonistic and antagonistic muscles evidenced the prevalence of the rest tremor and the disorder in the reciprocal inhibition, mainly in the Parkinson disease.
Morbilidad por trastornos del movimiento en la consulta de Neurología
Rodríguez Montalbán,Mónica; Gámez Rodríguez,Osiel; Hernández Silva,Tania; Echavarría Danger,Sergio; Bizet Altes,Omar;
MEDISAN , 2012,
Abstract: an observational, descriptive and cross-sectional study of 175 patients with movement disorders who attended the neurology department in "dr. juan bruno zayas alfonso" teaching general hospital was carried out from 2007 to 2010, aimed at describing the morbidity in them. these disorders began during the fifth and sixth decades of life in most of the members of the case material, with a higher frequency of parkinson disease, the essential tremor and dystonias, and prevalence of the male sex and half-bred skin. the electromyography of the agonistic and antagonistic muscles evidenced the prevalence of the rest tremor and the disorder in the reciprocal inhibition, mainly in the parkinson disease.
BOLTED TIMBER JOINTS WITH SELF-TAPPING SCREWS
Echavarría,César;
Revista EIA , 2007,
Abstract: the use of self-tapping screws with continuous threads in the joint area as a reinforcement to avoid splitting of timber members is studied. a theoretical model is developed to calculate the stress distribution around a pin-loaded hole in a timber joint, to predict brittle failure modes in bolted connections and to calculate the load in the reinforcing screws. laboratory experiments on reinforced and non-reinforced timber joints with 15,9-mm bolts have shown good agreement with the model predictions.
El desarrollo sostenible y el reciclaje del aceite usado de cocina a la luz de la jurisprudencia y el ordenamiento jurídico colombiano
Echavarría Restrepo,Juliana;
Producción + Limpia , 2012,
Abstract: introduction. vegetable oil is a waste that is not being adequately managed nowadays, and this brings harmful consequences for the environment and for human health. the sustainable development, on the other hand, aims to protect natural resources for the benefit of the current and future generations. this article shows the relationship between the principle of the sustainable development and the vegetable oil according to the colombian juridical order objective. explore the structure currently in force in colombia to manage the vegetable oils under the principle of sustainable development, develop this principle according to the constitution and to the constitutional court as keeper of the first to, finally, determine if wether or not there are regulations or public policies related to the use of vegetable oil under the principle of sustainable development. methodology. a search for legislative initiatives or jurisprudence at a national level was performed, looking for laws related to the management of vegetable oil. besides, national and international regulations about environmental and sustainable development protection were revised. results. there is a group of regulations, nationally and internationally, concerning the importance of sustainable development in abstract, but, locally, there is a lack of application of the principle to adequately manage the used vegetable oil. conclusion. in colombia there are no regulations that aim to guarantee an adequate management of used vegetable oil and its specific potential as a raw material to produce biofuel and thus contribute to keep the alimentary security of the country out of jeopardy.
Los fluidos hidrotermales formadores de la mineralización epitermal el Dorado-Monserrat, Macizo del Deseado Hydrothermal fluids ofthe El Dorado-Monserrat epithermal mineralization, Macizo del Deseado
Leandro E. Echavarría
Revista de la Asociación Geológica Argentina , 2004,
Abstract: El Dorado-Monserrat es un depósito epitermal de baja sulfuración ubicado en el Macizo del Deseado. La mineralización vetiforme de Au y Ag está genéticamente relacionada a la Formación Chon Aike del Jurásico medio a superior y emplazada en rocas volcánicas del Jurásico medio correspondientes a la Formación Bajo Pobre. La mineralización se presenta en vetas constituidas principalmente por cuarzo, acompa ado por adularia, pirita, hematita, magnetita y baritina. Los metales preciosos se encuentran en electrum, el que presenta una fuerte zonación de Au y Ag. A partir de la temperatura de homogeneización de inclusiones fluidas, la precipitación mineral es estimada entre 280° C y 180° C a partir de fluidos de baja salinidad de origen principalmente meteórico. El mecanismo de transporte del Au y Agha sido en solución como complejos bisulfurados (HS)2 . Evidencias mineralógicas y texturales, que incluyen generación temprana de calcita en hojas, posteriormente reemplazada por cuarzo, y la precipitación de adularia rómbica, sugieren que la precipitación mineral, incluida la del Au y Ag, es debida a ebullición. Los estudios paragenéticos y termoquímicos han permitido la determinación de las condiciones de los fluidos hidrotermales que poseían una fO2 entre -33,5 y -34 y un pH de 5,2 a 6. El Dorado-Monserrat is a low-sulphide epithermal deposit located in the Macizo del Deseado, Santa Cruz province, Argentina. Au and Ag vein mineralisation is genetically linked to the Chon Aike Formation of Late to Middle Jurassic age and is hosted by volcanic rocks of the Middle Jurassic Bajo Pobre Formation. The mineralization is present in veins carrying quartz, adularia, pyrite, hematite, magnetite and barite. Precious metals are contained in electrum, which presents a strong Au to Ag zonation. From fluid-inclusion homogenisation temperatures, mineral precipitation is estimated at between 280° C and 180° C from low-salinity fluids mainly of meteoric origin. Au and Ag transportation mechanism include solution as bisulphide (HS)2 complexes. Mineralogical and textural evidence, including the early generation of bladed calcite, later replaced by quartz, and the precipitation of rhombic adularia, suggest that the mineral precipitation, including that of Au and Ag, is due to boiling. Paragenetic and thermochemical studies established the initial conditions of the hydrothermal fluids at between fO2 -33,5 and -34 and pH 5,2 to 6.
BOLTED TIMBER JOINTS WITH SELF-TAPPING SCREWS
César Echavarría
Revista EIA , 2007,
Abstract: The use of self-tapping screws with continuous threads in the joint area as a reinforcement to avoid splitting of timber members is studied. A theoretical model is developed to calculate the stress distribution around a pin-loaded hole in a timber joint, to predict brittle failure modes in bolted connections and to calculate the load in the reinforcing screws. Laboratory experiments on reinforced and non-reinforced timber joints with 15,9-mm bolts have shown good agreement with the model predictions. En este artículo se estudia el uso de tornillos autoperforantes como refuerzo para evitar rupturas frágiles en uniones de madera. Se presenta un modelo teórico para calcular la distribución de esfuerzos alrededor de un perno en una unión de madera, predecir las rupturas frágiles y evaluar el esfuerzo en los tornillos autoperforantes. Los experimentos de laboratorio con uniones de madera, con pernos de 15,9 mm de diámetro, reforzadas y no reforzadas mostraron la efectividad del modelo teórico propuesto.
Corporalidad velada: la subjetivación del sujeto migrante
Laura Echavarría Canto
Revista Latinoamericana de Estudios Sobre Cuerpos, Emociones y Sociedad (RELACES) , 2010,
Abstract: El texto pretende dar cuenta de los procesos de subjetivación racial de los migrantes mexicanos en la ciudad de Nueva York a partir de una argumentación que parte del hecho de que el sujeto migrante ha sido educado desde su lugar de origen y de manera silenciada e invisible en el racismo, el autodesprecio y el estigma. Dicha argumentación se fundamenta en el análisis histórico (Bonfil Batalla, 1989, Florescano, 2000; Paz, 2001) de la introyección del autodesprecio racial en México; en el estudio teórico en torno a los procesos de interpelación y subjetivación (Althusser, 1976; Foucault, 1992 y Butler, 1997) y en una investigación de corte cualitativo realizada en la ciudad de Nueva York (2007-2010). Con base en lo anterior se propone que los migrantes presentan una corporalidad velada (como figura de intelección) en tanto el cuerpo como superficie de inscripción identitaria paradójicamente muestra y oculta una serie de huellas identitarias que aluden a subjetividades estigmatizadas con base en rasgos faciales y corporales distintivos racialmente y que ocultan una construcción histórica, social y epistemológica que ha naturalizado y sedimentado a la raza como lugar de inferioridad.
Desarrollo regional en el nuevo entorno de políticas públicas: un nuevo rol para el Estado latinoamericano
Uribe Echavarría Franscisco
Cuadernos de Economía , 1992,
Abstract: En este articulo el autor aporta nuevos elementos para enriquecer la reflexión en torno a los cambios que necesariamente deberán ocurrir en las políticas sobre desarrollo regional. A partir de la descripción de las nuevas circunstancias en las cuales se desenvuelven los procesos de desarrollo en los países latinoamericanos dificultades de acumulación de capital y de crecimiento económico, ineludible reestructuración económica y cambios en el escenario tecnológico mundial se discute el marco básico de limites y posibilidades del entorno emergente de políticas públicas sobre el cual se debe fundamentar el nuevo régimen regional. Con base en el análisis de los cambios en el rol del Estado y las implicaciones de este nuevo rol, el impacto de las nuevas transformaciones sobre el escenario regional y las nuevas perspectivas de intervención estatal, el autor propone un novedoso esquema de ajuste para las actividades de desarrollo regional.
PSICOLOGíA ASCéTICA Y PSICOLOGíA EPISTéMICA
LOPERA ECHAVARRíA,JUAN DIEGO;
Acta Colombiana de Psicología , 2006,
Abstract: two tendencies have been present in psychology since antiquity to our days: the ascetic tendency (purification, self care and transformation of the soul) and the epistemic tendency (systematic knowledge of the soul). both of them are evidence of the undeniable philosophical foundation of psychology. with modern science and its galilean paradigm, some thinkers believed that it was possible to leave behind the philosophical past and turn psychology into a natural science. this paper emphasizes that philosophical inheritance is essential for psychology and points out that not all the schools in that discipline intend to become a science. finally, the paper shows that ascetic and epistemic tendencies can be dialectically articulated in psychology
LA CONSCIENCIA: ?UNA REALIDAD NO ALGORíTMICA?
LOPERA ECHAVARRíA,JUAN DIEGO;
Acta Colombiana de Psicología , 2007,
Abstract: conscience is again at the center of attention of psychologists and scientists in general, and it has not stopped being that way for many philosophers. nevertheless, there?s no agreement about the way in which conscience can be understood. two extreme positions can be highlighted: one of them considers that its essential stamp is non-algorithmic, and therefore, in its performance there are elements that can?t be predicted. the other one states that conscience is a superior human capacity associated with language and rational activity. between these two opposite interpretations there are different considerations about the nature of language and the aspects that take part in the human capacity to create and invent. this paper analyzes these positions, their confluences and contradictions, and proposes a conceptual integration that tries to solve the divergences presented, especially those that are related to the influence of language, intuition, chance and reason in the performance of the conscience.
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