999 resultados para W 51 G633d


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En el presente trabajo se hace un cuestionamiento sobre la crisis de la práctica médica actual y del paradigma científico tradicional, denominado en la segunda mitad del siglo XX como Modelo Biomédico y Tecnológico, el cual desde esa época, y hasta la actualidad, rige la medicina, las prácticas en salud y el ejercicio profesional médico. Este modelo ha devenido en una crisis y la forma de asumir la salud y la enfermedad ha tenido serías consecuencias en la praxis médica, con efectos en la “eticidad”, en el deber-ser del médico y en la atención en salud de las comunidades. Asimismo, se hace una propuesta de un paradigma humano en el proceso salud-enfermedad, categoría de gran avance en el campo sanitario pues integra la relación dialéctica entre la salud y la enfermedad –que va más allá de lo biológico– y en la cual se entiende también la muerte como parte de la vida. Este modelo debe estar basado en la vida, la dignidad humana, la salud como derecho conexo a la vida y los derechos humanos, y no en la enfermedad. Igualmente, el objetivo de este compromiso es invitar a los médicos, a los profesionales encargados de los asuntos sanitarios, a los operadores jurídicos y administradores de justicia y los ciudadanos en general, a reflexionar sobre los cambios en el ejercicio médico actual. Se pretende que los conceptos fundamentados por Kant, como la dignidad, el respeto, la autonomía y la libertad, puedan circular en la práctica médica, para salvaguardar los derechos fundamentales de la persona humana y, con ello, la medicina como una profesión.

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Incluye bibliografía

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Sixteen years (1994 – 2009) of ozone profiling by ozonesondes at Valentia Meteorological and Geophysical Observatory, Ireland (51.94° N, 10.23° W) along with a co-located MkIV Brewer spectrophotometer for the period 1993–2009 are analyzed. Simple and multiple linear regression methods are used to infer the recent trend, if any, in stratospheric column ozone over the station. The decadal trend from 1994 to 2010 is also calculated from the monthly mean data of Brewer and column ozone data derived from satellite observations. Both of these show a 1.5 % increase per decade during this period with an uncertainty of about ±0.25 %. Monthly mean data for March show a much stronger trend of ~ 4.8 % increase per decade for both ozonesonde and Brewer data. The ozone profile is divided between three vertical slots of 0–15 km, 15–26 km, and 26 km to the top of the atmosphere and a 11-year running average is calculated. Ozone values for the month of March only are observed to increase at each level with a maximum change of +9.2 ± 3.2 % per decade (between years 1994 and 2009) being observed in the vertical region from 15 to 26 km. In the tropospheric region from 0 to 15 km, the trend is positive but with a poor statistical significance. However, for the top level of above 26 km the trend is significantly positive at about 4 % per decade. The March integrated ozonesonde column ozone during this period is found to increase at a rate of ~6.6 % per decade compared with the Brewer and satellite positive trends of ~5 % per decade.

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We prepared a W/WO3/TiO2 bicomposite photoanode by simple electrochemical anodization of W foil, followed by cathodic electrodeposition of TiO2 and annealing at 450 C for 30 min. This photoanode shows good photoactivity under irradiation with UV and visible light. In optimized conditions, it promotes complete photoelectrocatalytic oxidation of 3.33 × 10-5 mol L-1 basic red 51 solution (which is used in hair dye) at 0.1 mol L-1 Na2SO4, pH 2.0, under a current density of 1.25 mA cm-2 and ultraviolet and visible radiation-total organic carbon removal is 94 and 88%, respectively. This effect paves the way for the sustainable solar-assisted remediation of water bodies contaminated with organic components of hair dyes. © 2013 Elsevier Ltd. All rights reserved.

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In the history of modern communication, after the development of the printing press, the telegraph unleashed a revolution in communications. Today, Internet is in many ways its heir. Reflections on the telegraph may open up perspectives concerning tendencies, possibilities and pitfalls of the Internet. The telegraph has been well explored in important literature on communication and media which tends to emphasize the history of this technology, its social context and institutional meaning [e.g. Robert L. Thompson, 1947, Tom Standage, 2007 [1998]. James W. Carey, the North- American critical cultural studies' mentor, in his essay "Technology and Ideology. The Case of the Telegraph" (2009 [1983]), suggests a distinctive approach. In the telegraph, Carey sees the prototype of many subsequent commercial empires based on science and technology, a pioneer model for complex business management; an example of interest struggle for the patents control; an inductor of changes both in language and in structures of knowledge; and a promoter of a futurist and utopian thought of information technologies. Having in mind a revolution in communications promoted by the Internet, this paper revisits this seminal essay to explore its great attainment, as well as the problems of this kind of approach which conceives the innovation of the telegraph as a metaphor for all the innovations announcing the modern stage of history and determining still today the major lines of development in modern communication systems.