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Search Results: 1 - 10 of 60875 matches for " Juan Luis Garrido "
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Impact of the Transboundary Transport of Air Pollutants on Air Quality in Spain  [PDF]
Marta G. Vivanco, Inmaculada Palomino, Juan Luis Garrido, Ma ángeles González, Gonzalo Alonso, Fernando Martín
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.329135
Abstract: Although compliance with the European limit values for air pollutants has been achieved over large parts in Spain, some challenges remain for O3 on the maximum daily 8-hour mean and information limit values, for particulate matter on the PM10 annual and daily limit values and for NO2 on annual and hourly limit values. Transboundary transport of air pollutants has started to be recognized as a mechanism affecting air quality. Nevertheless, as a consequence of the complexity of atmospheric chemistry it is not easy to determine the importance of this effect. Photochemical models constitute an adequate tool to address this challenge, allowing the identification of pollutant pathways and the quantifi- cation of the influence of long-range transport of air pollutants. In this paper we evaluate the influence of out-of-Spain emissions on this non-compliance picture by using the CHIMERE photochemical model. For this purpose the model was run at a 0.2?-horizontal resolution for a European domain. Although at this resolution not all the local effects can be captured, transboundary transport of air pollutants can be examined. Several simulations were performed considering different emission scenarios. To see all out-of-Spain emissions influence, all the emissions were set to zero, excepting those in Spain. This includes examining European and ships effects on air quality in Spain. A second simulation was performed setting to zero just European-countries emissions, to see the effect of Europe. The third and fourth simulations were carried out by setting to zero France and Portugal emissions respectively. Ozone has been found to be the pollutant more affected by this transboundary transport, in particular in the summer period. The model indicates that the incoming air masses contributed in 2009 to the non-compliance with the European normative regulating the maximum daily 8-hour mean.
Caso clínico - radiológico: histiocitosis de células de Langerhans
Juan-Luis Pe?a Rehbein,Alejandro Bustos,Jaime Garrido
CIMEL. Ciencia e Investigación Médica Estudiantil Latinoamericana , 2005,
Abstract:
Prácticas y Cambios Contables en la Minería del Plomo de la Carolina (Jaén): Estudio de la Empresa Minera el Guindo en los A os Finales del S. XIX y Primer Cuarto del S. XX
José M.a Carlos álvarez López,Luis Garrido González,Juan Luis Lillo Criado
Revista de Contabilidad : Spanish Accounting Review , 2006,
Abstract: Hemos investigado sobre los libros contables de la sociedad minera El Guindo (sucursal de la Carolina), situada en el sur de Espa a y dedicada a la extracción de plomo, con el fin de examinar sus prácticas contables y los avances producidos en ellas. Destacamos, como cambios esenciales, en el primer periodo analizado (1899-1925), el paso del criterio de caja al criterio de devengo en los libros principales y, fundamentalmente, la introducción de un criterio de valoración para minerales basado en precios de mercado. Considerando que la admisión a cotización en Bolsa en 1921 fue el hecho más determinante de dichos cambios.With the aim of examining accounting practices and the progress made in this field, we have investigated the accounts books of the mining company El Guindo situated in the south of Spain (the branch in La Carolina), which dealt in the business of the extraction of lead. During the first period analyzed (1899-1925) the most notable changes were the move from a cash-based accounting system to an accrual-based accounting system in the main books and, fundamentally, the introduction of an valuation criterion for minerals based on market prices. Considering the most significant factor that gave rise to these changes to be its listing on the Stock Market in 1921.
Estradiol Activates β-Catenin Dependent Transcription in Neurons
Olga Varea, Juan Jose Garrido, Ana Dopazo, Pablo Mendez, Luis Miguel Garcia-Segura, Francisco Wandosell
PLOS ONE , 2009, DOI: 10.1371/journal.pone.0005153
Abstract: Estradiol may fulfill a plethora of functions in neurons, in which much of its activity is associated with its capacity to directly bind and dimerize estrogen receptors. This hormone-protein complex can either bind directly to estrogen response elements (ERE's) in gene promoters, or it may act as a cofactor at non-ERE sites interacting with other DNA-binding elements such as AP-1 or c-Jun. Many of the neuroprotective effects described for estrogen have been associated with this mode of action. However, recent evidence suggests that in addition to these “genomic effects”, estrogen may also act as a more general “trophic factor” triggering cytoplasmic signals and extending the potential activity of this hormone. We demonstrated that estrogen receptor alpha associates with β-catenin and glycogen synthase kinase 3 in the brain and in neurons, which has since been confirmed by others. Here, we show that the action of estradiol activates β-catenin transcription in neuroblastoma cells and in primary cortical neurons. This activation is time and concentration-dependent, and it may be abolished by the estrogen receptor antagonist ICI 182780. The transcriptional activation of β-catenin is dependent on lymphoid enhancer binding factor-1 (LEF-1) and a truncated-mutant of LEF-1 almost completely blocks estradiol TCF-mediated transcription. Transcription of a TCF-reporter in a transgenic mouse model is enhanced by estradiol in a similar fashion to that produced by Wnt3a. In addition, activation of a luciferase reporter driven by the engrailed promoter with three LEF-1 repeats was mediated by estradiol. We established a cell line that constitutively expresses a dominant-negative LEF-1 and it was used in a gene expression microarray analysis. In this way, genes that respond to estradiol or Wnt3a, sensitive to LEF-1, could be identified and validated. Together, these data demonstrate the existence of a new signaling pathway controlled by estradiol in neurons. This pathway shares some elements of the insulin-like growth factor-1/Insulin and Wnt signaling pathways, however, our data strongly suggest that it is different from that of both these ligands. These findings may reveal a set of new physiological roles for estrogens, at least in the Central Nervous System (CNS).
“Marx el teórico, Lenin el práctico”: Construcción del marxismo en jóvenes militantes de izquierda bajo la Unidad Popular * “Marx the theoretical, Lenin the practical”: Construction of Marxism in young left militants under the Popular Unity
Alex Zapata,Luis Garrido
Izquierdas , 2012,
Abstract: Por medio del estudio de casos concretos de militantes jóvenes populares de izquierda durante el gobierno de la Unidad Popular, se analizará cómo estas personas fueron construyendo o inventando, en sus prácticas socio-políticas cotidianas, la doctrina marxista de los cuales dicen ser seguidores, para detectar entre otras cosas las mediaciones, las ideas concretas y los sentidos, no exentos de contradicciones que estos le atribuyeron a la enunciada fuente ideológica.
GUERRA Y POBREZA EN COLOMBIA
GARRIDO,JUAN FERNANDO;
Estudios Gerenciales , 2001,
Abstract: vale la pena aclarar que este trabajo fue realizado a finales del a?o 2000, por consiguiente las cifras que aquí se encuentran han podido sufrir variaciones durante el presente a?o. ?existe alguna relación entre esta guerra que nos azota desde hace más de cuatro décadas y los niveles de pobreza que presenta el país? por conflicto armado me refiero básicamente al problema con la guerrilla. a los secuestros, a las extorsiones, a los bloqueos a las carreteras, a las voladuras de torres de energía y oleoductos, y a las demás acciones terroristas. mientras que por pobreza hago alusión a una mayor escasez de nuestros limitados recursos. a que la "torta de la riqueza" que nos tenemos que repartir todos los colombianos se hace cada vez más peque?a. y lo que es peor aún, que la porción que les corresponde a los ciudadanos menos favorecidos es la más afectada. ?el conflicto armado que actualmente está padeciendo nuestro país es entonces una causa o una consecuencia de la pobreza? por una parte, la incapacidad del estado para satisfacer las necesidades básicas de muchos ciudadanos (educación, salud, seguridad, empleo, etc.) es causa directa de nuestro conflicto armado. por otra, el conflicto armado le quita competitividad a nuestros productos, provoca una fuga masiva de capital tanto económico como humano, produce desempleo, etc. el problema adquiere más bien la dimensión y las características de un círculo vicioso. yo considero que se genera violencia cuando hay un estado incapaz de satisfacer las necesidades más elementales de algunos miembros de la sociedad. sin embargo, de la misma manera creo que toda forma de violencia destruye la riqueza.
UNA PIZCA DE SENTIDO: ACERCA DE ENTRE CELAN Y HEIDEGGER DE PABLO OYARZúN
Garrido,Juan Manuel;
Revista de filosofía , 2008, DOI: 10.4067/S0718-43602008000100006
Abstract: this paper seeks to elaborate and analyze the main philosophical import of pablo oyarzún's book, entre celan y heidegger. along the way i will hint at possibilities for thinking through certain key issues that have been identified and formulated by the author. in doing so, this essay will follow two major unes of argumentation. thefirst trajectory will consider the concept of "sense " as it is exhibited in oyarzún s discussion of"hermeneutic readings " of celan's poetry in particular (and in readings of poetry more generally). according to oyarzún, hermeneutic readings operate under the assumption that a given poem, like any other linguistic creation, possesses a definite meaning and signifies in a way that is accessible to the understanding. in response, oyarzún elaborates the inaccessible insignificance at workin poetic language. the primary function of this insignificance can be seen in the way it bursts open the circuit of sense, there by resisting the understanding-and, as will be seen, only thatwhich resists the understanding can in turn put it into play. the second trajectory will then consider the meaning of "suffering" as something that must be deprived of signification if it is to overeóme being neutralized and obliterated. indeed, only the traumatic event of absurd suffering is tenacious enough to return and exceed the temporal identity of collective consciousness (and here one could consider the phenomenon of'dating" in celan spoems). finally i would like to suggest that it is only with suffering that authentic memory and history arise.
VIAJE, CIENCIA FICCIóN, ARQUITECTURA. MAPAS, ESTACIONES Y ESPEJOS
Juan Antonio Cabezas Garrido
Proyecto, Progreso, Arquitectura , 2010,
Abstract: RESUMEN El viaje es y ha sido un tema recurrente en la ciencia ficción desde sus comienzos. El viaje como proyecto, como trayecto y como límite conforman escenarios en los que la arquitectura se hace presente definiendo el carácter, la forma y el entorno del futuro. La representación de ese entorno y la vocación prospectiva que contiene la ciencia ficción, producen innumerables ejemplos distintos que imaginan diversidad de escenarios posibles en futuros lejanos y próximos. La mezcla de elementos habitables que produce el viaje, donde la ciudad, el edificio y el transporte en ocasiones son la misma cosa, se a ade al reflejo de la realidad que el cineasta superpone a su propia y personal visión del porvenir. El tren llegando a la ciudad, símbolo del primer espectáculo cinematográfico, y la visión de las estrellas del pasajero de un transbordador espacial son metáforas de la fascinación del hombre por su propio descubrimiento y del deseo constante de avanzar hacia la materialización de su imaginación.SUMMARY Travel is and has been a recurrent theme in science fiction since its inception. The planning, the route and the destination of the journey shape scenarios in which architecture is present, defining the character, the form and the surroundings of the future. The representation of those surroundings, and the foresight contained in science fiction, produces innumerable different examples that imagine the diversity of possible scenarios in futures far and near. The mixture of inhabitable elements along the journey, where city, buildings and transport are sometimes indistinguishable, is added to the film director's superimposed reflection of reality and personal vision of the future. The train arriving at the city, a symbol of the first film screening, and the vision of stars seen by the space shuttle passenger, are metaphors for the fascination of humankind for their own discovery, and of the constant desire to advance towards the fulfilment of their imagination
Barthes y el problema de la lectura
Juan M. Garrido
Onomázein : Revista de Lingüística, Filología y Traducción , 1998,
Abstract: Cuál es la relación entre la lectura y la semiología (de Barthes)? En el desarrollo de esta pregunta, intentamos, fundamentalmente: 1°, especificar la relación que mantienen la "escritura" y la "lectura"; 2°, dejar que asomen algunas notas esenciales para un concepto de lectura; 3°, iniciar una interpretación de la semiología (de Barthes) entendiendo que su objeto propio es la lectura. (What is the relation between the act of reading and (R. Barthes's) semiology?By addressing this question, we attempt: first, to specify the relation between "reading" and "writing"; second, to suggest some essential characteristics of the concept of reading; third, to undertake an interpretation of (Barthes') semiology, departing from the idea of the act of reading as its proper object.)
Estudios filosóficos 2007-2009
Juan Manuel Garrido
Diánoia , 2012,
Abstract:
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