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Sample records for evaluacion tecnico economica

  1. Evaluacion de un protocolo para valorar situaciones de desproteccion infantil: la opinion de los tecnicos

    National Research Council Canada - National Science Library

    Martin, Eduardo; Aciego de Mendoza, Ramon

    2011-01-01

    El objetivo de este trabajo es conocer la valoracion que los tecnicos municipales hacen de un protocolo cuyo objetivo es unificar, en los diferentes municipios de la isla de Tenerife, el procedimiento...

  2. Selección tecnico-economica de emisores Technical and economical selection of emitters

    Directory of Open Access Journals (Sweden)

    Eduardo A. Holzapfel

    2007-12-01

    Full Text Available El presente trabajo tuvo como objetivo estudiar los factores que intervienen en la selección técnico económico de goteros. En el estudio fueron utilizados emisores autocompensados y no autocompensados, considerando a los aspectos técnicos como porcentaje de suelo humedecido, número de emisores por planta y coeficiente de uniformidad y precio y la presión de operación del emisor como aspectos económicos. Los resultados muestran que la presión de operación de los emisores es el factor más importante a considerar en la selección, ya que para valores más bajos de presión de operación se obtuvieron menores valores de costo total anualizado, independiente del tipo de gotero. En general, los goteros no autocompesados presentaron valores de costo anualizado menores, para un rango de presión similar. Finalmente el análisis tecnico-económico en la selección de emisores es un procedimiento importante.The objective of this research was to study the parameters that affect the technical-economical selection of emitters. In the study compensated and non-compensated emitters were used. The technical aspects considered were: percentage of wetted soil, number of emitters per plant and the uniformity coefficient as well as price and operation pressure for economic aspects. The results shows that the operation pressure of emitters is the most important factor to be considered in the selection , with smaller values of pressure giving lower total annual cost, independently of the type of emitter. In general, the non-compensated emitter shows lower annual cost values than for compensated emitters, for a similar range of pressures. Finally the technical-economical analysis in the emitter selection is an important procedure.

  3. Steam explosion and new production processes for pulping industry: technical and economical feasibility; Steam explosion e nuovi processi di produzione cartaria: fattibilita` tecnico-economica

    Energy Technology Data Exchange (ETDEWEB)

    Viggiano, D. [ENEA, Centro Ricerche Trisaia, Rotondella, Matera (Italy). Dipt. Energia; Bramanti, O. [ENEA, Centro Ricerche Trisaia, Rotondella, Matera (Italy). Dipt. Innovazione

    1998-05-01

    scientifica e tecnologica internazionali sono stati sempre piu` indirizzati allo sviluppo di nuovi processi di lavorazione ed alla valorizzazione, al recupero es alla trasformazione di materie prime alternative e, soprattutto, rinnovabili. A tale riguardo, gia` da alcuni anni, si sta affermando la consapevolezza da parte degli imprenditori della carta di rispondere ad una triplice esigenza: quella dovuta alle normative antinquinamento sempre piu` severe, quella relativa all`opinione pubblica sensibile alla tutela ambientale e quella di mercato legata all`acquisizione di un `vantaggio competitivo` nei confronti della concorrenza. Il presente lavoro si inserisce in tale scenario realizzando una valutazione tecnico-economica dell`applicazione in ambito industriale della tecnologia di steam-explosion ed delle biomasse ligno-cellulosiche, intese sia come scarti di lavorazione agro-industriali che nella piu` recente accezione di colture industriali (specie C{sub 4}, C{sub 5}) specificatamente destinate al recupero di aree marginali (set aside) e successivo utilizzo a fini produttivi ed energetici. Nel contempo, viene preso in esame l`introduzione del processo di trattamento di Steam Explosion per un conveniente inserimento in cicli di produzione industriale, con particolare riferimento a quelli della carta.

  4. Technical-economic study of energy efficiency in offshore industrial electrical systems; Estudio tecnico economico de eficiencia energetica en sistemas electricos industriales costa afuera

    Energy Technology Data Exchange (ETDEWEB)

    Fiscal Escalante, Raul [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    2001-07-01

    In this work the methodology of analysis and the results obtained are presented in an technical-economic study for the application of power efficiency measures for a marine platform. The methodology is considered in the following steps: 1) Technical evaluation of the installation 2) Technical analyses of the optimization alternatives 3) Economic evaluation of the selected optimization alternatives graphs of the thermal regime of the variation with respect to the generation, variation of the efficiency with respect to the generation, efficiency curve of the motor and the designed curve of the pump are presented. A table of general reference parameters and another one of particular reference is given. Also a table of the economic evaluation when changing the electrical motor by one more efficient is presented. It is concluded that a potential of energy saving exists in their processes, generating an opportunity to perform a technical-economic feasibility study in these facilities. [Spanish] En este trabajo se presenta la metodologia de analisis y los resultados obtenidos en un estudio tecnico-economico para la aplicacion de medidas de eficiencia energetica para una plataforma marina. Se plantea la metodologia en los siguientes pasos: 1) Evaluacion tecnica de la instalacion 2) Analisis tecnico de las alternativas de optimizacion 3) Evaluacion economica de las alternativas de optimizacion seleccionadas. Se muestran graficas de la variacion del regimen termico respecto a la generacion, variacion de la eficiencia respecto a la generacion, curva de eficiencia del motor y curva de diseno de la bomba. Se da una tabla de parametros de referencia generales y otra de referencia particulares. Tambien se presenta una tabla de la evaluacion economica al cambiar el motor electrico por uno mas eficiente. Se concluye que existe un potencial de ahorro de energia en sus procesos, generando una oportunidad para realizar estudios de factibilidad tecnica economica en dichas instalaciones.

  5. Exploitation of biogas in municipal in slaughterhouses: Technical-economical evaluation; Aprovechamiento de biogas en rastros y mataderos municipales: Evaluacion tecnica-economica

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Hernandez, Donaji A.; Castaneda Sanchez, Arlem M.; Garcia Galeana, Erika [Universidad Nacional Autonoma de Mexico (UNAM), Facultad de Ingenieria (Mexico)

    2009-07-01

    Nowadays the treatment of the solid and liquid remainders in the municipal slaughter houses is small because of the idea that the treatment is expensive; nevertheless, it is important to take advantage of them, since this can reduce to the environmental impacts they cause, as well as the discharge of greenhouse effect gas. The use of bio digesters for the treatment of these remainders has become an efficient process to avoid the exit of methane gas to the atmosphere, taking advantage of the biogas and other residues to produce electricity. The elaboration of a technical-economical evaluation of a pilot plant shows the costs of investment, maintenance, as well as the income that can be obtained by the total usage of these residues and the savings in the electrical power consumption. The analysis of this study demonstrates that the use of biogas through bio-digesters for the generation of electrical energy is a profitable option for the treatment of the residues, because the income by the sale of compost, blood flour, as well as the diminution of the electrical tariff, justifies the initial investment. These projects will be more attractive, if they use financing and are registered as MDL projects. [Spanish] Actualmente el tratamiento de los desechos solidos y liquidos en los rastros y mataderos municipales es poco pues se tiene la idea de que el tratamiento es costoso; sin embargo, es importante que se aprovechen ya que esto puede reducir los impactos ambientales que provocan, asi como la emision de gases de efecto invernadero. El uso de biodigestores para el tratamiento de estos desechos, se ha convertido en un proceso eficiente para evitar la salida de gas metano a la atmosfera, aprovechando el biogas y otros residuos para producir electricidad. La elaboracion de una evaluacion tecnica-economica de una planta piloto, muestra los costos de inversion, mantenimiento, asi como los ingresos que se pueden obtener por el aprovechamiento total de estos residuos y el

  6. Economical evaluation of two public policies regarding water pollution control; Evaluacion economica de dos politicas publicas para controlar la contaminacion del agua

    Energy Technology Data Exchange (ETDEWEB)

    Gutierrez-Andrade, Miguel Angel [Universidad Autonoma Metropolitana-Iztapalapa (Mexico); Bravo-Perez, Hector Manuel [Centro de Investigacion y Docencia Economica (Mexico)

    2006-01-15

    Since Pigou proposed that the internalization of the negative externalities could be done calculating a tax in order to correct the difference between private costs and social costs; this will recover the conditions of economic efficiency in all the hydraulic legislations of the world, however, this advice has been applied in conditions of great shortage; it could be thought that to burden the consumptive use could be more suitable than to burden the production of residual water reaching this way not only the recovering of social efficiency but also a double dividend: to stimulate the water recycling. This work evaluates the effect that the tax to the consumptive use will have over a fake economy. The achieved results are compared using data from two economies with a different water production each one. The contrast is done using a model of computable general equilibrium with the Arrow-Debreu assumptions relaxed with the introduction of a government that collect the proposed taxes in a previously distorted economy. The collection distributes through a direct transference to the revenue of the consumers, the model calibrates and resolves following the methodology proposed by Shoven and Whalley (1984). [Spanish] Desde que Pigou propuso que la internalizacion de las externalidades negativas podria hacerse a traves de un impuesto que corrigiera la diferencia entre costos privados y costos sociales -de forma tal que se recuperaran las condiciones de eficiencia economica-, practicamente en todas las legislaciones hidraulicas del mundo se ha aplicado esta recomendacion; sin embargo, en condiciones de gran escasez de agua podria pensarse que gravar la cantidad de agua incorporada definitivamente al producto final, el uso consuntivo, podria ser mas adecuado que gravar la produccion de agua residual, pues asi se lograria, ademas de recuperar las condiciones de eficiencia social, un doble dividendo: incentivar el reciclaje del agua. En este trabajo se evalua el efecto que el

  7. Technical and economical assessment of the options for energy saving in the library of the Universidad Autonoma Metropolitana-Azcapotzalco; Evaluacion tecnico economica de opciones para el ahorro de energia en la biblioteca de la Universidad Autonoma Metropolitana-Azcapotzalco

    Energy Technology Data Exchange (ETDEWEB)

    Bratu, N.; Campero, E.; Dorantes, R.; Fuentes, V.; Figueroa, A.; Garcia, R.; Zekkour, A. [Universidad Autonoma Metropolitana-Azcapotzalco, Mexico, D. F. (Mexico)

    1993-12-31

    This paper presents a diagnosis of the electrical energy consumption in the library of the Azcapotzalco Unit of the Universidad Autonoma Metropolitana, to determine the actions that can be implemented for energy conservation. This without disturbing the lighting and thermal comfort. The analysis showed that, by changing the reflecting surfaces of the lighting lamps, the number of units can be reduced, without lowering the illumination level below the recommended values. The saving was estimated for replacement of the fluorescent lamps for others of metallic halogenides in the areas where the ceiling is high; for the installation of switches to improve the selectivity in turning on and turning off the lamps, achieving this way a better usage of the natural light; for the reduction of the electric load of the air conditioning units which will be obtained in incorporating induced draft shafts; and for an improvement in the electric and ballast installation. For the actions that turned out to be redeemable in three years the assistance of the Fideicomiso de Apoyo al Programa de Ahorro de Energia del Sector Electrico (FIDE) of the Comision Federal de Electricidad (CFE) has been available. It is expected that the execution of the modifications will be carried out in the November and December months of 1993, and the results will be evaluated in 1994. [Espanol] En este trabajo se presenta un diagnostico del consumo de energia electrica en la biblioteca de la Unidad Azcapotzalco de la Universidad Autonoma Metropolitana para determinar las acciones que se pueden llevar a cabo para ahorrar energia electrica. Esto sin deteriorar el confort luminico y termico. El analisis mostro que, cambiando las superficies reflectoras de las luminarias, se puede reducir el numero de lamparas, sin que el nivel de iluminacion quede debajo de los valores recomendados. Se estimaron ahorros: por la sustitucion de las lamparas fluorescentes por otras de halogenuros metalicos en las partes donde el techo es alto; por la instalacion de apagadores para mejorar la selectividad en el encendido y apagado de las lamparas, logrando asi un mejor aprovechamiento de la iluminacion natural; por la reduccion de la carga electrica destinada al aire acondicionado que se obtendra al incorporar tiros de aire inducido; y por una mejoria en la eficiencia de la instalacion electrica y de los balastros. Para las medidas que resultaron amortizables en tres anos se cuenta con el apoyo del Fideicomiso de Apoyo al Programa de Ahorro de Energia del Sector Electrico (FIDE) de la Comision Federal de Electricidad (CFE). Se espera que la ejecucion de las modificaciones se lleve a cabo en los meses de noviembre y diciembre de 1993 y evaluar los resultados durante 1994.

  8. Storia economica e pensiero economico: spunti dal caso italiano ((Economic history and economic thought: insights from the Italian case

    Directory of Open Access Journals (Sweden)

    Pierluigi Ciocca

    2012-04-01

    Full Text Available L’articolo è rivolto a gettare un ponte fra la storia economica e la storia del pensiero economico nell’esperienza italiana dell’Ottocento e del Novecento. Vengono scelti e approfonditi episodi e fasi concernenti lo sviluppo, la stabilità, la distribuzione del reddito nell’economia italiana durante i due secoli. L’attenzione si incentra, in particolare, sui legami tra concorrenza e progresso tecnico nel trend di crescita dell’economia; cambio della lira e comportamenti delle imprese nel periodo fra le due guerre; passaggio dall’instabilità alla stabilità del sistema bancario negli anni dopo il 1950; correlazione negativa fra accelerazione nella crescita economica e sperequazione nella distribuzione personale e territoriale del reddito. Con riferimento a ciascuno di questi nodi i risultati più recenti delle ricerche di storia economica vengono accostati alle riflessioni degli economisti coevi e successivi di fronte a quegli stessi eventi. This article is intended to build a bridge between economic history and the history of economic thought in the Italian nineteenth and twentieth centuries. Are chosen and in-depth episodes and phases concerning the development, stability, income distribution in the Italian economy during the two centuries. The attention is focused in particular on the links between competition and technical progress in the growth trend of the economy; the lira exchange and behavior of firms in the period between the two wars; transition from instability to stability of the banking system in the years after the 1950; negative correlation between acceleration in economic growth and inequality in the personal and territorial distribution of income. With reference to each of these nodes the latest results of research in economic history are juxtaposed with ideas of contemporary and subsequent economists in front of those same events.  JEL Codes: B10, B20, N13, N14Keywords: storia economica, storia del pensiero

  9. Caracterizacion tecnico-economica y tipologia de las explotaciones lecheras de La Pampa

    National Research Council Canada - National Science Library

    Giorgis, Alberto; Perea Munoz, Jose Manuel; Garcia Martinez, Anton; Gomez Castro, Antonio Gustavo; Angon Sanchez de Pedro, Elena; Larrea, Angel

    2011-01-01

    ..., mientras que el engorde bovino (Bos taurus) y la agricultura son decisiones a corto plazo y de menor inversion. En definitiva, el empresario agricola puede combinar y sustituir con relativa facilidad el engorde bovino por la agricultura, sin embargo la actividad lechera, de elevada inversion, carece de elasticidad de sustitucion [2]. ...

  10. Experiences in transferring the techniques for the economical conduction of the Mexico`s vehicular transport; Experiencias de la transferencia de las tecnicas de conduccion economica en el autotransporte en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Osorio, Francisco Javier [Comision Nacional para el Ahorro de Energia, Mexico, D. F. (Mexico)

    1996-12-31

    The Comision Nacional para el Ahorro de Energia (CONAE) (National Commission for Energy Conservation) developed the training program that through the dictation of pilot courses of technical-economical conduction of auto-motor vehicles is addressed to private enterprises, agencies and governmental institutions. This paper presents the background and the obtained results of the same. This methodology is presented in detail and a description of the courses is also presented as well as its characteristics. The comparative results are annexed of the tests between the conduction normally performed and the technical-economical conduction. The fuel saving obtained varies from 9% to 22.5%. Then, the reasons why the training in the technical- economical conduction results in one of the actions more profitable in fuel saving are explained, but also the difficulties for its implementation are also discussed. A conclusion is offered. [Espanol] La Comision Nacional para el Ahorro de Energia (CONAE) desarrollo el programa de capacitacion que a traves de la imparticion de cursos pilotos de conduccion tecnico- economica de vehiculos automotores, se dirige a las empresas privadas, dependencias e instituciones gubernamentales. En este trabajo se presentan los antecedentes y resultados obtenidos del mismo. Se detalla esta metodologia y se presenta una descripcion de los cursos y sus caracteristicas. Se anexan resultados comparativos de las pruebas entre la conduccion que se realiza normalmente y la conduccion tecnico-economica. Los ahorros de combustible obtenidos van desde 9% hasta 22.5%. Luego, se explican las razones por las que la capacitacion en conduccion tecnico-economica resulta ser una de las acciones mas rentables del ahorro de combustibles, pero tambien se discuten las dificultades para implantarla. Se ofrece una conclusion.

  11. Analysis methodology for economic technical feasibility studies in offshore electrical generation systems; Metodologia de analisis para estudios de factibilidad tecnica economica en sistemas de generacion electrica costa fuera

    Energy Technology Data Exchange (ETDEWEB)

    Fiscal Escalante, Raul [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2007-07-01

    An analysis methodology followed in the development of technique-economic feasibility studies of systems of electrical generation in offshore electrical installations is presented, including the obtaining of the curves of the turbine and generator performance, the technical considerations for the formulation of the operation scenes and the calculations of the economic evaluation of a real scenario. [Spanish] Se muestra una metodologia de analisis seguida en el desarrollo de estudios de factibilidad tecnica-economica de sistemas de generacion electrica en instalaciones electricas costa fuera, incluyendo la obtencion de las curvas de comportamiento de la turbina y el generador, las consideraciones tecnicas para la formulacion de los escenarios de operacion y los calculos de la evaluacion economica de un escenario real.

  12. Valoracion economica del patrimonio natural: las areas naturales protegidas

    National Research Council Canada - National Science Library

    Novoa Goicochea, Zaniel I

    2011-01-01

    ... la planificacion de areas naturales ecologica y paisajisticamente valiosas en particular. Palabras clave: Bosque Natural El Canoncillo, valoracion economica del patrimonio natural, costo de viaje, valoracion contingente.

  13. Incorporacion de personas adultas a los estudios universitarios: aprendizaje permanente para arquitectos tecnicos

    National Research Council Canada - National Science Library

    Castano, Enrique M; Garin, Alberto

    2012-01-01

    ... de lo que se denomina aprendizaje permanente. Especificamente, se analiza la situacion de los arquitectos tecnicos, que en Espana quieren ampliar su formacion academica para convertirse en arquitectos...

  14. Le biomasse come opportunità per il territorio: analisi tecnico-economica per la Regione Basilicata

    Directory of Open Access Journals (Sweden)

    Severino Romano

    2016-01-01

    Full Text Available In Basilicata region there is a considerable amount of unused wood as well as the capacity to use it as feedstock for the production of bioenergy. Thus, the supply of renewable energy could be increased through greater utilization of forest biomass. However, for a better planning of the production and processing chain, the energy and forestry sectors require better estimates of the availability of unused roundwood and residues. The aim of the research was the development of a model for the spatial evaluation of biomass quantities obtainable from forestland. The results obtained point out a significant amounts of biomass distributed on most of the territory; b good opportunities related to white certificate trading and c potential of business creation, entrepreneurship and local employment.

  15. Trasparenza economica e povertà

    Directory of Open Access Journals (Sweden)

    Helder Ferreira de Mendonça

    2013-06-01

    Full Text Available Nowadays, with the diffusion of inflation targeting, the main instrument that central banks use to achieve final objectives in the implementation of monetary policy (concerning inflation and unemployment is the interest rate. Furthermore, recent studies point out that central bank transparency contributes to reducing asymmetric information and price stability. As inflation, unemployment and interest rates are determinants of the level of poverty, the central bank's behaviour is relevant to its reduction. Accordingly, the present paper highlights the connection between economic transparency and poverty. The theoretical and empirical results denote that central bank transparency is a useful strategy in reducing income inequality and poverty.  JEL Codes: I32, E52Keywords: trasparenza economica, povertà

  16. Teoria dei giochi e teoria della politica economica

    OpenAIRE

    Giavazzi, Francesco; Carraro, Carlo

    1989-01-01

    Verso la metà degli anni '70, molti economisti iniziarono a chiedersi se un ruolo attivo della politica monetaria e fiscale fosse ancora auspicabile ed efficace. I dubbi nascevano dall'osservazione che la politica economica sembrava incapace di risolvere il dilemma di un'alta inflazione e di una disoccupazione crescente in cui si trovavano i maggiori paesi industriali.

  17. Alianzas cambiantes: relaciones reciprocas durante epocas de privacion economica en Bolivia urbano

    National Research Council Canada - National Science Library

    Wutich, Amber

    2011-01-01

    ... extrema e inseguridad economica. Este articulo examina como la gente de bajos recursos mantiene relaciones reciprocas en villa Israel, una comunidad periurbana en la ciudad de Cochabamba, Bolivia...

  18. Sustentabilidade economica das areas protegidas no Brasil: lacunas institucionais para a consolidacao de alternativas

    National Research Council Canada - National Science Library

    Camphora, Ana Lucia

    2009-01-01

    A sustentabilidade economica da gestao das areas protegidas brasileiras constitui agenda de pesquisa recente, na qual prevalecem lacunas referentes a falta de dados sistematizados e atualizados sobre...

  19. Evaluation of the energy saving potential in illumination using presence sensors; Evaluacion del potencial de ahorro de energia en iluminacion utilizando sensores de presencia

    Energy Technology Data Exchange (ETDEWEB)

    Cortes Eslava, Alejandro [Universidad Nacional Autonoma de Mexico (UNAM), Mexico, D. F. (Mexico)

    1999-07-01

    The analysis and the evaluation of the energy saving that would provide a system of illumination controlled by sensors of presence in an enclosure with low transit, evaluating the economic profitability of the system is presented. The data, from which the analysis is sustained and the results are deducted, coming from the use and installation of a timer in the area. [Spanish] Se presenta el analisis y la evaluacion de los ahorros de energia que suministraria un sistema de iluminacion controlado por sensores de presencia en un recinto con bajo transito, evaluando la rentabilidad economica del sistema. Los datos, a partir de los cuales se sustenta el analisis y se deducen los resultados, provienen de la utilizacion e instalacion de un contador de tiempo de uso en el recinto.

  20. Direccion gubernativa y rectoria del empleo publico, entre disparidades y el encuadre tecnico-juridico para lograrlo

    National Research Council Canada - National Science Library

    Bolanos Garita, Rolando

    2012-01-01

    El empleo publico deviene en una constelacion de elementos de caracter constitucional, juridico, administrativo y tecnico que aun no han podido entenderse y menos administrarse de manera correcta a nivel costarricense...

  1. Solar photovoltaic. Competitiveness and economic evaluation. Comparative and models; Energia solar fotovoltaica. Competitividad y evaluacion economica. comparativa y modelos

    Energy Technology Data Exchange (ETDEWEB)

    Collado Fernandez, E.; Colmenar Santos, A.; Peire Arroba, J.; Carpio Ibanez, J.; Castro Gil, M. A.

    2010-07-01

    Limits have been evaluated in the medium and long term economic competitiveness of solar photovoltaic energy in general and Spain in particular, considering the level of evolution that must have this form of energy production, until it become cevitamin with the other traditional energy sources and other emerging growth. to conduct the study, has developed a scenario-based methodology photovoltaic, which has taken account of the Spanish state regulation because it is vital operation on the road to real competitiveness relative to other types of energy. (Author) 10 refs.

  2. Torrefaction of briquettes: technical-economic feasibility and perspective in Brazilian market; Briquetes torreficados: viabilidade tecnico-economica e perspectivas no mercado brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Felfli, Felix Fonseca; Luengo, Carlos Alberto [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Inst. de Fisica Gleb Wataghin. Grupo Combustiveis Alternativos; Rocha, Jose Dilcio [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico

    2004-07-01

    It is presented an study of the operational impact into a briquettes factory produced by the introduction of a torrefaction process. Through costs analysis it is shown that for a briquettes factory of 1.200 ton/year capacity, it is possible to increase Operational Profits and decrease the Break Even Point in 15.7 % when a torrefaction reactor is introduced into the manufacturing line. So, it is possible to insure that torrefaction increase the overall system efficiency without increasing yearly production since the number of 'biomass fuels' is increased enabling operation in other markets. This study also shows that torrefaction improves briquettes quality allowing access to the comparatively smaller consumer market still unreached by biomass briquets. (author)

  3. Selection of technical and economic purification system wastewater, applying the assessment of the water decontamination; Seleccion tecnico-economica del sistema de depuracion de aguas residuales

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez Miranda, J. P.

    2009-07-01

    The decontamination in water bodies can be realised among others by treatments at the end of the tube. For it is necessary to apply to a methodology or procedure for economic the technical selection of alternatives for the handling or treatments of liquid residues at the end of the tube. Calculation example, a study of case (municipality) in the Savannah of Bogota was developed (Colombia), where the technical valuation of the best alternative of treatment at the end of the tube was observed that stops the case of the analysis, the optimal system is the percolating filter from the plant of comparison of removal efficiencies, costs of investment, operation and maintenance, as well as the specific qualitative valuation of each alternative. (Author) 27 refs.

  4. El principio de simpatia como fundamento para una etica de union economica y social

    National Research Council Canada - National Science Library

    Munoz Cardona, Angel Emilio

    2011-01-01

    ... economicas, sociales y politicas. Observacion que sera constatada con los escritos de los filosofos y economistas clasicos, Adam Smith y John Stuart Mill, quienes argumentaron que la justicia y la libertad solo son posibles de ser...

  5. Modelacion economica con informacion espacialmente explicita de la deforestacion en Uraba, Colombia, 1980-2000

    National Research Council Canada - National Science Library

    Ramirez Sosa, Cristian David; Orrego Suaza, Sergio Alonso

    2011-01-01

    .... Para ello se usaron modelos conceptuales basados en teoria economica del uso de la tierra rural, junto con modelos estadisticos discretos dicotomicos en los que se empleo informacion espacialmente explicita...

  6. Actualidad economica y educativa. Necesidad de una vuelta a la pedagogia platonica

    National Research Council Canada - National Science Library

    Medina Medina, Maria Isabel

    2014-01-01

    Ante la perspectiva economica de la globalizacion, su caracter antidemocratico, el aumento de la injusticia social en el mundo que esta provocando y la prioridad en educacion en adaptar a los alumnos...

  7. The technical-economic potential of thermal energy saving in hospitals; El potencial tecnico-economico de ahorro de energia termica en hospitales

    Energy Technology Data Exchange (ETDEWEB)

    Herrera, A. [Universidad Nacional Autonoma de Mexico (Mexico); Islas, J [Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico); Arriola, A. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2001-07-01

    cantidad representa un porcentaje importante de los gastos totales del hospital (29.367 millones de dolares) es importante determinar posibilidades tecnico - economicas de ahorro de energia termica del hospital. El HGZ N 1 - IMSS Ags. Esta ubicado en un conjunto mas amplio en donde se localizan las unidades del IMSS, tales como, la lavanderia regional, la unidad deportiva, el centro de seguridad social, la unidad de medicina familiar N 1 y el hospital. Sin embargo a partir de las instalaciones electricas y de suministro de vapor y agua caliente del hospital se distribuyen los fluidos electricos y termicos de todo este conjunto. Debido a esta situacion, en este trabajo nos referiremos al consumo global del conjunto del IMSS de Aguascalientes en donde el hospital es el principal consumidor de energia termica. En el presente trabajo calcularemos el potencial tecnico - economico de ahorro de energia termica del conjunto del IMSS a traves de la tecnica termodinamica de punto de pliegue o tecnica pinch.

  8. La calidad de las evaluaciones de manuscritos en Gaceta Sanitaria

    Directory of Open Access Journals (Sweden)

    García A.M.

    2002-01-01

    Full Text Available Objetivo: Describir las cualidades y limitaciones de las evaluaciones externas de los manuscritos remitidos a Gaceta Sanitaria para mejorar la selección de los evaluadores, aumentar la calidad de las evaluaciones y establecer un sistema interno que pudiera incorporarse al proceso editorial de gestión de los manuscritos. Métodos: Se incluyeron 100 evaluaciones de 55 manuscritos recibidos durante los años 2000 y 2001. Se aplicó un formulario de preguntas cerradas en el que se valoraban aspectos específicos y generales de calidad en las evaluaciones (respuestas sí/no o sobre una escala de 1 a 5. Se llevó a cabo un análisis descriptivo y de correlación entre los distintos ítems del formulario. Se calculó un Índice de Calidad como suma de las puntuaciones de los ítems específicos. Resultados: Las evaluaciones obtuvieron puntuaciones más elevadas en relación con la compleción del formulario para los revisores (84%, la utilización de un tono constructivo con los autores (evaluaciones por encima de 3: 63%, la identificación de cualidades y limitaciones metodológicas (evaluaciones por encima de 3: 59% y la fundamentación de los comentarios del evaluador (evaluaciones por encima de 3: 58%. Con menor frecuencia, se valora la relevancia (evaluaciones por encima de 3: 40% o la originalidad (evaluaciones por encima de 3: 35% del manuscrito. La utilidad global de la evaluación para el editor y la calidad global de la evaluación mostraron una elevada correlación con el resto de ítems específicos en el formulario y con el Índice de Calidad. Conclusiones: La calidad general de las evaluaciones externas de manuscritos en Gaceta Sanitaria se puede considerar alta. Se ponen de manifiesto los aspectos mejorables de las evaluaciones. Se podría establecer un proceso sistemático de valoración de las evaluaciones externas utilizando indicadores simples como la valoración global de la utilidad o de la calidad de la evaluación en su

  9. Sustentos ontologicos, teleologicos y metodologicos de los modelos de evaluacion curricular aplicados en la educacion superior en Venezuela

    National Research Council Canada - National Science Library

    Gonzalez Lopez, Rosalina

    2010-01-01

    ... evaluacion. Por ello esta investigacion tuvo como objetivo determinar los sustentos ontologicos, teleologicos y metodologicos de los modelos de evaluacion curricular aplicados mayoritariamente en el pais...

  10. Evaluacion de bibliotecas universitarias: un modelo de avance y desarrollo

    National Research Council Canada - National Science Library

    Tarango, Javier; Hernandez-Orozco, Guillermo

    2009-01-01

    ... (sociedad del conocimiento). El modelo teorico de evaluacion bibliotecaria que se propone en este documento representa una alternativa innovadora para valorar a la biblioteca en una dimension mas objetiva, trascendente...

  11. Como preparar un programa de informacion sobre la asistencia economica (Planning a Financial Aid Awareness Program).

    Science.gov (United States)

    Department of Education, Washington, DC.

    This booklet, written in Spanish, is intended to be used with a set of slides as part of a presentation to students on "How To Apply for Federal Student Aid" ("Como Solicitar la Asistencia Economica Federal para Estudiantes"). The first part of the book is a script based on the slides. After the script is a guide to hosting a financial aid…

  12. Algunas relaciones entre ciencia y tecnologia, evaluacion tecnologica y la teoria del posicionamiento

    National Research Council Canada - National Science Library

    Cardenas Salgado, Enrique

    2010-01-01

    El presente articulo busca establecer algunas relaciones entre ciencia y tecnologia junto con los planteamientos del construccionismo social, la teoria del posicionamiento y la evaluacion tecnologica...

  13. Evaluacion de viabilidad para la proteccion de la Costa Caribe Colombiana de aumentos en el nivel del mar: un enfoque de valoracion economica

    National Research Council Canada - National Science Library

    Cardoso, Andrea; Benhin, James

    2011-01-01

    .... Los resultados del ACB indican que implementar las medidas adicionales para la proteccion de la Costa Caribe Colombiana del ANM es un proyecto viable inclusive si las predicciones del ANM son impredecibles...

  14. Evaluacion de viabilidad para la proteccion de la Costa Caribe Colombiana de aumentos en el nivel del mar: un enfoque de valoracion economica

    National Research Council Canada - National Science Library

    Cardoso, Andrea; Benhin, James

    2011-01-01

    .... El Metodo de Valoracion Contingente fue utilizado para estimar los beneficios del mercado y del no-mercado, utilizando una muestra aleatoria de 504 encuestados en Barranquilla, Cartagena y Santa Marta...

  15. Evaluacion de la estabilidad de Trichoderma sp. y Azotobacter sp. conservados por diferentes metodos

    National Research Council Canada - National Science Library

    Sarmiento Rangel, Yvonne; Hazel Vergel, Ariadna; Cardenas Caro, Diana Maria

    2013-01-01

    ... y permiten garantizar la idoneidad y reproducibilidad de la experimentacion (Pinzon et al., 2009). Existen diferentes metodos para la preservacion de los microorganismos y es importante mencionar que ninguno de ellos es universal, por lo que se debe elegir el metodo que mas se ajuste a las necesidades de la coleccion, teniendo en cuenta los medios tecnicos, l...

  16. Technical and economical analysis of the energy recovery during in incineration of urban solid residues; Analise tecnico-economica da recuperacao de energia durante a incineracao de residuos solidos urbanos

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, Flavio N.; Lora, Electo S.; Martins, Andre R.S. [Escola Federal de Engenharia de Itajuba, MG (Brazil). Dept. de Mecanica

    1999-07-01

    This work conducts a technical and economical evaluation on the energetic recovering of an incinerator with processing capacity of 600 t/h of urban solid residues, resulting from electric power generation (gas turbines) and cooling (absorption systems) using garbage and natural gas. The results allow the conclusion that besides the social and environmental benefits resulting from the elimination of the contamination potential, an electric energy surplus can be generated for inclusion in the Brazilian energy matrix.

  17. Wind energy technical-economic viability under the new regulatory rules of the Brazilian electric sector; Viabilidade tecnico-economica da energia eolica face ao novo marco regulatorio do setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Dutra, Ricardo Marques

    2001-02-15

    The wind energy development in the world shows as one of the most important and promising technologies in the clean energy generation complement. This work presents the wind energy evolution and utilization in the electric power generation, the environmental impacts and perspectives. Considering the great wind potential in Brazil and the new rules of the electric sector, technical feasibility studies were developed based on regions north and northeast wind data as well as economic feasibility studies based on the new regulatory rules for the energy renewable sources. The results show that is possible to generate clean energy within the new context of the electricity sector.(author)

  18. Study of technical and economic feasibility of a manufacturing briquettes for energy generation; Estudo da viabilidade tecnico-economica de uma fabrica de briquetes para fins de geracao energetica

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Claudinei Augusto da; Simoes, Andre Felipe [Universidade Estadual de Campinas (FEM/UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica], Emails: claudinei@fem.unicamp.br, afsimoes@fem.unicamp.br; Felfli, Felix Fonseca; Mesa Perez, Juan Miguel [Bioware Tecnologia, Campinas SP (Brazil); Rocha, Jose Dilcio [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico

    2006-07-01

    Current scenario indicates that renewable energy sources are expected to play an increasingly important role in the world energy matrix, mainly due to a potential reduction of fossil fuel reserves and environment issues. In this context, the use of alternative energy sources, specifically biomass briquettes, shows up as a great opportunity. However, it is known that an economic feasibility assessment for the project depends on decision-making factors such as equipment, labor and material implementation. All costs and investments were calculated. A company headquartered in the city of Tiete, Sao Paulo State, analyzed the total costs of implementing a high density briquette factory. Tow scenarios were considered. In scenario 1, with tax exemption, the Net Present Value (NPV) is positive and the Intern Rate of Return is 16,9%, is an economic feasible scenario. Scenario 2, with no tax exemption, is not economically feasible, the NPV is negative and the Intern Rate Return is 13,9%, lower than 15.0% of the minimum rate of investor attractiveness. (author)

  19. Considerations technical-economical of two methods, absorption and biological, for industrial gases desulfurization; Consideraciones tecnico-economicas de dos metodos, absorcion y biologico, para la deuslfurizacion de gases industriales

    Energy Technology Data Exchange (ETDEWEB)

    Valencia Rodriguez, R.; Santiesteban Garlobo, C.; Fernandez Santana, E.; Obaya Abreu, M. C.

    2003-07-01

    In Cuba, the hydrogen sulfide removal is done by physical-chemical methods using FeO III. In the last years was developed a biological methods that using alcohol distilleries, sewage, sugar cane and porcine wastewaters with a great efficiency. From this results the economical evaluation of both methods is done. The feasibility study using the biological methods in the hydrogen sulfide removal from biogas is done. Was obtained a reduction of investment cost of 208 813, 55 USD and 54 868, 21 of production cost. (Author) 10 refs.

  20. Technical and economical analysis of the anaerobic biodigestion of vinasse from sugar cane for energetic purposes; Analise tecnico-economica da biodigestao anaerobia da vinhaca de cana de acucar para fins energeticos

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Raquel Melegari de; Paula Junior, Durval Rodrigues de [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia de Alimentos e Agricola]. E-mail: rasop97@yahoo.com

    1999-07-01

    This paper performs an economical evaluation of the Brazilian biogas production resulting from the anaerobic digestion of the sugar cane vinasse for electric power generation and using in vehicles, aiming the substitution of conventional fuels. In this work, for the biodigestion technology the UASB (Upflow Anaerobic Sludge Blanket Reactor) is considered. The economic analysis is performed based on the biogas production costs (investment + operational costs), considering three alternatives for the biogas use, in accordance with data available in the literature.

  1. Evaluation of a integral systems greenhouse - solar dryer for small growers; Evaluacion de un sistema integral invernadero - secadero solar para pequenos productores

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, Victor O; Iriarte, Adolfo A [INENCO, Universidad Nacional de Catamarca, Catamarca (Argentina); Carabajal, Dante; Sabadzija, Gabriela; Tomalino, Luis [E.E.A. INTA, Catamarca, Catamarca (Argentina)

    2000-07-01

    sistema productivo, y en el verano se le acondiciona para cumplir las funciones de secadero solar. En la epoca invernal los cultivos evaluados fueron zapallito (Cucurbita maxima L), melon (Cucumis melo) y pepinillo (Cucumis sativus), determinandose ciclos de cultivo, periodo de cosecha y rendimiento en kg m{sup 2} para cada especie. La evaluacion del comportamiento como secador se realizo utilizando pimiento para pimenton (Capsicum annum). En este caso se analiza comportamiento termico del diseno, sistema de calefaccion auxiliar, comportamiento del producto durante el secado y calidad final del mismo. Se obtuvo un producto final de muy buena calidad tanto en color, sabor, aroma, con una clasificacion de calidad extra segun el Codigo Alimentario Argentino y la Norma ISO 7541. El tiempo de secado disminuyo notablemente respecto al secado a cielo abierto. La evaluacion economica se realizo para las campanas 1995, 1996, 1997, efectuandose posteriormente una evaluacion financiera de la inversion para un periodo de cinco anos obteniendose un VAN positivo y un TIR superior al costo de la mejor alternativa de uso del dinero. El sistema integrado es una alternativa valida en el marco de una produccion sustentable productiva para pequenos productores.

  2. Metodo de identificacion-medicion-evaluacion de riesgos para la direccion estrategica

    National Research Council Canada - National Science Library

    Bolano-Rodriguez, Yuniel; Alfonso-Robaina, Daniel; Ramirez-Moro, Aliec; Hernandez-Rodriguez, Arturo Abel

    2011-01-01

    En este trabajo se presenta un Metodo de Identificacion-Medicion y Evaluacion de riesgos para la Direccion Estrategica, utilizando el enfoque a procesos y aportando como valor cientifico la medicion...

  3. Evaluacion de los resultados de servicio al por menor segun la perspectiva del consumidor

    National Research Council Canada - National Science Library

    Francisco-Maffezzolli, Eliane Cristine; Muller Prado, Paulo Henrique

    2013-01-01

    Este estudio pretende evaluar la relacion entre los resultados financieros y la evaluacion no financiera desde la perspectiva del consumidor, teniendo en cuenta el contexto de la telefonia movil en Brasil...

  4. Competencia digital en la educacion superior: instrumentos de evaluacion y nuevos entornos

    National Research Council Canada - National Science Library

    Esteve Mon, Francesc; Gisbert Cervera, Merce

    2013-01-01

    .... Sin embargo, los instrumentos existentes para su desarrollo y evaluacion no siempre cubren todas las areas o dimensiones de estas competencias, por lo cual resulta esencial explorar nuevos entornos...

  5. Simulacion y evaluacion de una propuesta de implementacion del minimo vital de agua potable en Colombia

    National Research Council Canada - National Science Library

    Mendez Sayago, Jhon Alexander; Mendez Sayago, Johanna Mildred

    2011-01-01

    Este articulo presenta la simulacion y evaluacion de la implementacion del minimo vital de agua potable para los usuarios de los estratos uno y dos, subsidiada a partir del incremento en las tarifas...

  6. Metodos estadisticos de evaluacion de la concordancia y la reproducibilidad de pruebas diagnosticas

    National Research Council Canada - National Science Library

    Cortes-Reyes, Edgar; Rubio-Romero, Jorge Andres; Gaitan-Duarte, Hernando

    2010-01-01

    Introduccion: en la evaluacion de la utilidad de una prueba diagnostica, se requiere en algunas situaciones valorar la reproducibilidad de los resultados o la concordancia de los mismos al compararla...

  7. La evaluacion del desempeno docente: consideraciones desde el enfoque por competencias

    National Research Council Canada - National Science Library

    Rueda Beltran, Mario

    2009-01-01

    ... de las propuestas sobre las competencias docentes. Se proponen criterios y estrategias para desarrollar programas de evaluacion de los profesores en el contexto de un ambiente generalizado en el sector educativo que esta adoptando el modelo...

  8. REVISIÓN DE LAS EVALUACIONES ADAPTATIVAS COMPUTARIZADAS (CAT

    Directory of Open Access Journals (Sweden)

    Ruber López

    2015-06-01

    Full Text Available En este artículo presentamos una revisión de las Evaluaciones Adaptativas Computarizadas. A diferencia de los test convencionales, estas evaluaciones plantean un examen adaptado a las necesidades y capacidades de cada uno de los evaluados, lo cual redunda en una mejor experiencia para el evaluado y en una mayor precisión del resultado. Las evaluaciones adaptativas se fundamentan en la teoría de respuesta a ítems, que define las directrices y condiciones para que este tipo de pruebas sea posible. A partir de esta teoría, surgen distintos modelos que permiten modelar diferentes rasgos de los evaluados y la relación de estos con la probabilidad de acertar un ítem dado. Para llevar a cabo el proceso de evaluación, un test adaptativo debe estar conformado de un banco de ítems, un método que permita la selección de estos y un criterio de terminación. Todos estos componentes articulan la prueba y la ayudan a concretarse adecuadamente. AbstractThis paper is a review of the Computerized Adaptive Testing Process. Unlike conventional tests, these assessments propose a test adapted to every examinee’s needs and capabilities, which results in a better experience for those assessed and a more accurate score. Adaptive assessments are based on item response theory, which defines the guidelines and conditions for such tests to be carried out. From this theory, different models that allow the repositioning of different traits of the examinees and their relationship with the probability to succeed in a given item, arise. To complete the assessment process, an adaptive test should consist of a set of items, a method which allows the selection of these and a termination criterion. All the aforementioned components articulate the test and help to properly materialize it.

  9. The hydrogen resource. Productive, technical and economic analysis; La risorsa idrogeno: analisi produttiva tecnica ed economica

    Energy Technology Data Exchange (ETDEWEB)

    De Fronzo, G. [Lecce Univ., Lecce (Italy). Dipt. di Scienze Economiche, Matematico-Statistiche, Economici-Aziendali

    2000-02-01

    Diffusion of hydrogen as an energetic vector meets with a lot of obstacles that don't depend on available raw material, but on hydrogen combination with other elements. It is necessary, therefore, to separate hydrogen picking out the available different technologies to have different pure hydrogen of variable quantities. Besides, its diffusion as fuel is limited because of the great production cost compared to fuels sprung from petroleum. Hydrogen used on a large scale could have advantages on the environment and occupation, but there are economic and politic obstacles to limit its diffusion. Future of economic system, based on hydrogen as the main energetic vector, will depend on the programme that national and international qualified governing bodies will be able to do. [Italian] L'articolo analizza l'uso dell'idrogeno come risorsa dal punto di vista tecnico ed economico. Si discute la relazione con i programmi che governi nazionali sapranno mettere in campo per il suo sfruttamento.

  10. Considerazioni sulla crscita economica nel lungo periodo. (Ideas and concepts of long run growth

    Directory of Open Access Journals (Sweden)

    J. STEINDL

    2013-12-01

    Full Text Available Con l'eccezione di Marx e Schumpeter , gli argomenti di " lungo periodo " e il progresso tecnico sono taciuti dai classici fino alla fine della seconda guerra mondiale . Da allora , la curiosità è stata nuovamente suscitata o su due fronti . Il primo è quello delle ex colonie in via di sviluppo e il secondo viene da un rinnovato ottimismo nei paesi industriali maturi . In particolare , l'autore considera il lavoro di Harrod e Kalecki . With the exception of Marx and Schumpeter, the subjects of “long run” and technical progress have lain dormant from the Classics to the end of World War II. Since then, curiosity has again been aroused on two fronts. The first is from former colonies in development and the second is from a renewed optimism in mature industrial countries. The present article deals with the theory and literature that came about with regards to the latter area. In particular, the author considers the work of Harrod and Kalecki.JEL: O41, O42, E12

  11. Environmental criminality; Criminalita' ambientale. Un'analisi economica

    Energy Technology Data Exchange (ETDEWEB)

    Percoco, M. [Milan Univ. Bocconi, Milan (Italy)

    2001-07-01

    The aim of this paper is to provide a theoretical rationale for environmental crimes. In particular, it is studied the illegal market of industrial hazardous waste management and it is presented a model with Government, industry and illegal dumping industry interacting to reach the equilibrium. Several policy actions are tested, in particular it is appraised a special Authority constitution to prevent and repress environmental crimes. Finally, following the theoretical findings of the model, are provided some comments to recent law proposals. [Italian] Lo scopo del presente saggio e' quello di fornire una ratio dal punto di vista della teoria economica ai fenomeni di criminalita' ambientale. Argomento principale e' il mercato che viene a crearsi a seguito dello smaltimento illecito dei rifiuti industriali ed in tal senso si presenta un modello in cui Governo, industrie ed imprese per lo smaltimento illecito interagiscono sino a raggiungere un equilibrio. Sono altresi' testate alcune possibilita' d'intervento da parte del Settore Pubblico per contrastare il fenomeno da cui si originano forti esternalita' negative, quindi si studia la fattibilita' di un'apposita Autorita' che coordini le azioni di prevenzione e repressione. Infine, in base ai risultati raggiunti nella sezione teorica, si propongono alcuni commenti alla recente proposta di legge in materia di reati ambientali.

  12. Evaluacion de indicadores biometricos en llamas (Lama glama) de las variedades Ch'accu y K'ara

    National Research Council Canada - National Science Library

    Llacsa M., Javier; Urviola S., J. Martin; Leyva V., Victor

    2007-01-01

    .... Las evaluaciones se hicieron al primer, tercer y setimo mes de edad de las crias. Los calculos del VM y del ASG se hicieron mediante figuras geometricas de cono truncado y trapecio, respectivamente, utilizando el programa de ingenieria Autocad...

  13. Evaluacion del impacto del aprendizaje basado en proyectos en cursos de ingenieria utilizando analisis de correspondencias multiples

    National Research Council Canada - National Science Library

    Fernandez-Samaca, Liliana; Ramirez, Jose M; Vasquez, Jesus E

    2013-01-01

    Este articulo presenta una experiencia sobre la evaluacion del impacto del aprendizaje basado en proyectos en cursos de ingenieria mediante el uso de analisis de correspondencias multiples y agrupacion jerarquica...

  14. Taller de diseno de una pauta de evaluacion de trabajos escritos desde la perspectiva de alfabetizacion academica: estudio de caso

    National Research Council Canada - National Science Library

    Lopez, Karen Shirley; Gomez, Nora Lucia; Pedraza, Carmen Eugenia

    2012-01-01

    .... Este estudio de caso da cuenta de una experiencia de formacion de profesorado universitario en aspectos de la alfabetizacion academica y de la evaluacion formativa pertinentes en la elaboracion...

  15. Congruencia entre el diseno curricular y la evaluacion de los aprendizajes esperados en catedras impartidas en una Universidad Chilena

    National Research Council Canada - National Science Library

    Ayala, Ricardo; Messing, Helga; Labbe, Caroline; Obando, N. Isabel

    2010-01-01

    Estudio Cuantitativo que evalua la consistencia interna de asignaturas impartidas en una universidad privada, especificamente en cuanto a la evaluacion del aprendizaje y su coherencia con los objetivos planificados...

  16. Analisis y resultados de un modelo de evaluacion, apoyo y mejora de proyectos empresariales impulsados por jovenes emprendedores

    National Research Council Canada - National Science Library

    Revuelto Taboada, Lorenzo; Fernandez Guerrero, Rafael

    2009-01-01

    .... Este trabajo tiene como objetivo avanzar en la mejora de los sistemas de evaluacion de programas de ayuda a emprendedores y mostrar como las mejoras introducidas pueden tener efectos sobre la calidad...

  17. Method of Automated Dynamic Assessment of reading literacy for Secondary Education (EdilLEC)/'Metodo de evaluacion dinamica automatizado' de competencias lectoras para educacion secundaria

    National Research Council Canada - National Science Library

    Perez, Ramiro Gilabert; Lloria, Amelia Mana; Pelluch, Laura Gil; Tatay, Ana C. Llorens; Clemente, Vicenta Avila; Gamez, Eduardo Vidal-Abarca

    2016-01-01

    .... Keywords reading literacy; PISA; dynamic assessment; Secondary Education Se presenta un nuevo metodo de evaluacion dinamica de la competencia lectora automatizado para educacion secundaria (EdiLEC...

  18. Fast techniques for the evaluation of reservoirs capacity; Metodos de evaluacion rapida de capacidad de yacimentos

    Energy Technology Data Exchange (ETDEWEB)

    Flores Armenta, Magaly del Carmen [Gerencia de Proyectos Geotermoelectricos de la Comision Federal de Electricidad, Morelia (Mexico)

    1995-05-01

    Fast techniques for the evaluation of geothermal reservoirs allow us to have an approach of its electrical potential. Based on the laws of conservation of mass and energy, considering infinite permeability, this paper presents techniques for fast reservoir evaluation. These techniques let us calculate in a very practical way, the electric power that can be obtained from a geothermal field. These techniques can be an important tool to solve practical problems, and are useful during the preliminary development of geothermal sources. [Espanol] Los metodos de evaluacion rapida de yacimientos permiten estimar de manera aproximada la potencia electrica maxima y minima de los mismos. Se presentan tecnicas de evaluacion basadas en las leyes de conservacion de masa y energia, considerando permeabilidad infinita. Las tecnicas utilizadas pueden ser una herramienta importante para la solucion de problemas practicos y para la toma de decisiones en etapas de prefactibilidad.

  19. Evaluacion preliminar de toxicidad, genotoxicidad y actividad antimicrobiana de Sida rhombifolia L

    National Research Council Canada - National Science Library

    Bruges, Keile; Reguero Reza, Maria Teresa

    2007-01-01

    ... la planta Sida rhombifolia L. a la cual se le realizo la evaluacion de la toxicidad de extractos y fracciones utilizando como organismos de prueba Daphnia magna, Hydra attenuata y Artemia salina. La actividad biologica fue evaluada mediante la prueba de sensibilidad a antimicrobianos y la genotoxicidad con el ensayo Cometa. Los ensayos de toxicidad aguda con los organismos de prueba muestran que los extractos acuosos son practicamente no toxicos (C[L.sub.50] >1000 ppm), lo cual sugiere que su us...

  20. Energy evaluation process of electric domestic refrigerators; Proceso de evaluacion energetica de refrigeradores electrodomesticos

    Energy Technology Data Exchange (ETDEWEB)

    Malacara Toral, Manuel; Ruiz Neblina, Joaquin [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1992-12-31

    A description is made of an energy evaluation study on electric domestic refrigerators carried out by the Instituto de Investigaciones Electricas (IIE), in its strategy for diminishing the energy consumption through the design enhancement, the manufacture, the operation and the standardization of the electric appliances. In order to initiate the evaluation-standardization process, the Mexican (NOM), the American (ANSI/AHAM) and the Canadian (CAN/CSA) standards were taken as a base to harmonize the procedures and the parameters of the tests. The energy assessment demonstrated that there are significant differences among the standards encompassed by the study, therefore, recommendations were made for the harmonization of the standards. [Espanol] Se describe un estudio de evaluacion energetica sobre refrigeradores electrodomesticos realizado en el Instituto de Investigaciones Electricas (IIE) dentro de la estrategia para disminuir los consumos de energia a traves de mejoras en el diseno, la manufactura, la operacion y la normalizacion de equipos electricos. Se tomo como base las normas mexicanas (NOM), americana (ANSI/AHAM) y canadiense (CAN/CSA) para iniciar el proceso de evaluacion-normalizacion a fin de armonizar los procedimientos y parametros de las pruebas. La evaluacion energetica demostro que existen diferencias significativas entre las normas que abarco el estudio por lo que se presentan recomendaciones para la armonizacion de las normas.

  1. Economic evaluation of application of nuclear power, fossil and biomass for seawater desalination in the case of Mexico; Evaluacion economica de la aplicacion de la potencia nuclear, fosil y biomasa para desalar agua de mar en el caso de Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Palacios G, N.; Gomez A, R.; Vazquez R, R.; Espinosa P, G. [Universidad Autonoma Metropolitana, Unidad Iztapalapa, Depto. de Ingenieria de Procesos e Hidraulica, Av. San Rafael Atlixco 186, Col. Vicentina, 09340 Mexico D. F. (Mexico)], e-mail: rvr@xanum.uam.mx

    2009-10-15

    In this work the fresh water production costs are compared on base to the seawater desalination, taking advantage of the heat or the electricity generated by means of the nuclear fission, the energy fossil result of the combustion of natural gas, fuel oil and coal, as well as the electricity generated by the bio-fuels combustion. The option of generating electricity and at the same time to produce drinking water is discussed. Using electricity, the best combination of technologies as for costs, the option more cheap, it is the distillation by means of a distillation combined process of multiple effects combined with reverse osmosis using nuclear energy coming from a gas cooled reactor using a cycle Brayton. While using direct heat was as the option more economic the use of nuclear vapor of low pressure exchanging heat in a vapor generator of low pressure, as energy source of a flash distillation process of several stages. In this last case, the energy source or nuclear vapor will be the result of the operation of a nuclear power plant cooled and moderate with water and operating in a cycle Rankine. (Author)

  2. La utilidad de las evaluaciones de sistemas educativos: el valor de la consideración del contexto.

    OpenAIRE

    Orden Hoz, Arturo de la; Jornet Meliá, J. M.

    2012-01-01

    En este artículo se hace una revisión de los procedimientos de evaluación de sistemas educativos. A partir de esta revisión, se analizan algunos factores relacionados con la baja utilidad de este tipo de evaluaciones. El análisis se dirige hacia el diseño deficiente de los cuestionarios de contexto. Se observa que los cuestionarios de contexto no llegan a explicar el rendimiento. Su baja capacidad de explicación del rendimiento es la causa de la baja utilidad de las evaluaciones de sistemas e...

  3. La teoria economica y el enfoque Box-Jenkins en la modelizacion de la demanda de productos energeticos: el fuel-oil y la energia electrica en Espana

    Science.gov (United States)

    Garcia-Pardo, Maria Jimena

    Esta tesis trata de integrar la teoria economica el enfoque box-jenkins del analisis de series temporales y un conjunto de datos de la economia espanola en un intento de elaborar modelos empiricos de demanda de productos energeticos con especial atencion a la deteccion y medicion de los efectos precio. Se analizan para ello las demandas de tres productos: la energia electrica el fuel - oil utilizado en las centrales termicas para la generacion de electricidad y el fuel - oil no termico. El periodo muestral es el comprendido entre enero de 1970 y diciembre de 1977.

  4. Evaluacion de las condiciones de mezcla y su influencia sobre el cloro residual en tanques de compensacion de un sistema de distribucion de agua potable

    National Research Council Canada - National Science Library

    Montoya, C; Cruz, C.H; Torres, P; Lain, S; Escobar, J.C

    2012-01-01

    Se llevo a cabo una evaluacion a escala real de las condiciones de mezcla y su influencia sobre la calidad del agua en un tanque de compensacion del sistema de distribucion de agua potable de la ciudad de Cali (Colombia...

  5. Evaluacion sensorial de arroz biofortificado, variedad IDIAP Santa Cruz 11, en granjas autosostenibles del Patronato de Nutricion en la Provincia de Cocle, Panama

    National Research Council Canada - National Science Library

    Camargo Buitrago, Ismael; Henriquez, Teresita; Montenegro, Salvador; Vergara de Caballero, Eira; Espinosa, Juan; Vergara, Omaris; Mojica de Torres, Eyra

    2011-01-01

    .... En cada comunidad 30 madres de familias participaron en la evaluacion. Para el analisis sensorial se utilizo la prueba discriminativa triangular, en la que las madres de familia debian identificar la muestra...

  6. Technical economic feasibility study for the implementation of a nuclear power plant for the production of electricity in Colombia; Estudio de factibilidad tecnico economica para la implementacion de una central de energia nuclear para la produccion de energia electrica en Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Gonzales, David E.; Bolanos, Hernan G.; Mayorga, Manuel A.; Rodriguez, Edwin A., E-mail: david_egO@yahoo.es, E-mail: hernanbolaos@yahoo.com.ar, E-mail: alejo_mayorga@yahoo.com, E-mail: edwin.rodriguez@distoyota.com.co [Escuela Colombiana de Carreras Industriales (ECCI), Bogota (Colombia). Grupo de Investigacion GIATME

    2013-07-01

    A study on the technical and economic feasibility will be used to implement a nuclear power in Colombia to generate electricity. To this will be searched if there are previous studies on this topic and what they concluded. The manner in which power is supplied will be discussed in a national level nowadays, its strengths and weaknesses. It will be investigated the legal norms that exists in the country on nuclear power and renewable energy sources, the standards established at world level, the nuclear accidents and the great examples. Providers will be sought on the world market nuclear equipment which serve to this purpose and the technical characteristics of these equipment will be discussed. The type of fuel used in nuclear reactors, its origin, method of production, specifications, availability and long-term and safe handling and final disposal are considered. safe handling of this technology and policy or international rules that will studied.

  7. The study for defining the best technical and economical alternatives for the associated substation to the Tucurui hydraulic power plant - second stage; Estudo para definicao da melhor alternativa tecnico-economica para a subestacao elevadora-secionadora associada a Usina Hidroeletrica Tucurui - segunda etapa

    Energy Technology Data Exchange (ETDEWEB)

    Machado Junior, Camilo; Fukuoka, Nita; Rose, Eber Havila [ELETRONORTE, Brasilia, DF (Brazil)]. E-mail: eber@eln.gov.br; Martinez, Manuel Luis Barreira [Escola Federal de Engenharia de Itajuba, MG (Brazil). Inst. de Energia Eletrica. Dept. de Eletrotecnica; Violin, Airton

    2001-07-01

    This document presents a synthesis of the developed study for defining the switching scheme of the associated substation to the Tucurui hydraulic power plant second stage which is being constructed. In order to reduce the short circuit level in the first stage substation (in operation) to suitable values and, at the same time, to maintain the flexibility in the generator and transmission systems, it has been decided to install some series reactors between the substations in 550 Kv. The used methodology to define the suitable alternative is also discussed and the substation final configuration involving the first and second stages of the substation enlargement is presented through a illustration.

  8. Technical and economic feasibility of the use of discharge lamps in replacement of filament for induction of photoperiod in chrysanthemum seedlings production; Viabilidade tecnico-economica do uso de lampadas de descarga em substituicao as de filamento para inducao de fotoperiodo na producao de mudas de crisantemos

    Energy Technology Data Exchange (ETDEWEB)

    Rossi, Luiz A.; David, Eduardo [Universidade Estadual de Campinas (FEAGRI/UNICAMP), SP (Brazil). Fac. de Engenharia Agricola], E-mail: rossi@feagri.unicamp.br; Pagliardi, Odail [Faculdade Municipal Prof. Franco Montoro (FMPFM), Mogi Guacu, SP (Brazil); Sarubbi, Juliana [Universidade Federal de Santa Maria (CESNORS/UFSM), Palmeira das Missoes, RS (Brazil). Centro de Educacao Superior Norte-RS

    2010-07-01

    Due to its physiological characteristics, the seedlings of chrysanthemums require supplemental light to prevent bud formation, that is done at night. This article examines the technical and economic valuation to replace the current technology of artificial lighting used by producers (incandescent bulbs) for the purpose of inducing photoperiod in a protected environment for cutting-discharge lamps, with the goal of reducing the consumption electricity used in the process. The analysis showed that the integrated compact fluorescent yellow lamp 23W is the technically and economically feasible for such replacement. (author)

  9. Preliminary technical and economic viability for the implantation of fluvial transport of CNG (Compressed Natural Gas) for barges in Amazon Region; Avaliacao preliminar de viabilidade tecnico-economica para implantacao de transporte fluvial de GNC (Gas Natual Comprimido) por barcacas na Regiao Amazonica

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Marcos C.C. de; Porto, Paulo L. Lemgruber [Interocean Engenharia e Ship Management, Rio de janeiro, RJ (Brazil); Cunha, Rafael H. da [Metro Rio, RJ (Brazil); Garcia, Rafael M. [Pic Brasil (Brazil); Almeida, Marco A.R. de [Universidade Gama Filho (UGF), Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The isolated regions of the Amazon present difficulties for integration with the electrical system which is creating some economic problems due to the consequent costs of electric generation of subsidies as a function of the fossil fuel use as oils diesel and fuel. A viable option is the use of Natural Gas - NG that is Also available in the region. Its modal of transport possible in the Region North they are for gas-lines or barges. The Compressed Natural Gas transport is distinguished that - CNG for barges was still not tested operationally in Brazil. Soon, to develop a Preliminary Study of Viability Technician - Economic - SVTE for the implantation of fluvial transport of CNG between the cities of Coari and Manaus is basic, therefore it is created strategical alternative for the electric generation in this region. The electric sector, the characteristics of the NG and the transport in this region had been analyzed to support to the work. The gas line and the fluvial transport of CNG for barges in this region are not conflicting, and they in a complementary form can act. The SVTE presented a Liquid Present Value and Internal Tax of very attractive Return justifying its implantation. (author)

  10. The problem of Combined Sewer Overflows (CSOs) in the Besos basin. A technical and economic method for correction such discharges in a Mediterranean river basin; El problema de las descargas de los sistemas unitarios (DSU) en la cuenca del Besos. Una metodologia tecnico-economica para su correccion en una cuenca mediterranea

    Energy Technology Data Exchange (ETDEWEB)

    Gomez, M.; Navarro, J.; Serra Prat, P.; Castillo Omedas, F.; Menendez Ocina, S.; Escorihuela Chueca, M.

    2006-07-01

    the problem related to CSOs are well known and have been corrected in many countries, but so far there have few relevant studies on this in Spain. These problems are more acute in river basins with small flows running through towns, such as the river Besos. The basin which was studies is the Granollers drainage system with 84 spillways, 40 of which produce spills during episodes of weak rainfall and pollute the river bed. As a result of applying the economic analysis to the modelling of the Granollers System, a proposal was made to reduce the CSO volumes by half and their frequency to a third. It was proposed to do this by putting in place nine retention tanks of different volumes at specific sites. The results obtained in this study suggest that this methodology is applicable to other urban basins. (Author)

  11. Technical-economical diagnosis to schedule the maintenance shut downs of thermal power stations departing from behavior, economic engineering and thermo-economic tests; Diagnostico tecnico economico para programar las salidas a mantenimiento de centrales termicas a partir de pruebas de comportamiento, ingenieria economica y termo economia

    Energy Technology Data Exchange (ETDEWEB)

    Arreguin Arredondo, Antonio

    2002-08-01

    The thesis work develops a methodology to determine when it is convenient, technically and economically to provide maintenance to a thermal electric unit and the type of maintenance to be performed, all this sustained in an economic analysis taking into account the variation of the production costs, of the interest rates, of the fuel prices and of the electric energy prices, the maintenance costs and the degradation of the unit in the time. Once analyzed the previous matters a thermo-economic test model and reference (values provided by the manufacturer) is performed and they are compared to determine in what equipment or system of the process of electric energy generation is required to focus on the material resources as well as on the human resources, in order to obtain the best results from the maintenance and recover the greatest possible efficiency of the unit. [Spanish] El trabajo de tesis desarrolla una metodologia para determinar cuando conviene, tecnica y economicamente proporcionar mantenimiento a una unidad termica y el tiempo de mantenimiento a realizar, todo esto sustentado en un analisis economico tomando en cuenta la variacion de los costos de produccion de las tasas de interes, de los precios del combustible y de la energia electrica, el costo de mantenimiento y la degradacion de la unidad en el tiempo. Una vez analizado lo anterior se realiza un modelo termoeconomico de prueba y referencia (valores proporcionados por el fabricante) y se comparan para determinar en que equipos o sistema del proceso de generacion de energia electrica se requiere enfocar tanto los recursos materiales como humanos, con el fin de obtener mejores resultados del mantenimiento y recuperar lo mayor posible la eficiencia de la unidad.

  12. Modal analysis applied to rotor balancing: two relevant technical aspects; Analisis modal aplicado al balanceo de rotores: dos aspectos tecnicos relevantes

    Energy Technology Data Exchange (ETDEWEB)

    Aguirre Romano, Jorge E.; Preciado Delgado, Eduardo [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1991-12-31

    In applying the modal analysis to rotor balancing, it is frequent to find technical matters that are hardly developed in text books or that can only be deducted through a profound and complex study. For this reason, an engineer dedicated to the practice that wishes to deepen in the subject of rotor balancing, can hardly understand these matters, unless they are developed with the specific orientation that relate them with the balancing practice. In this paper two of these subjects related to the definition and recollection of modal parameters are presented: a) the fundamental form of the polar diagrams of response, that can be perfectly circular in certain cases and b) the relationship that exists among the modal forms of a rotor and the distribution of weights that must be placed to balance them in a given way. [Espanol] Al aplicar el analisis modal al balanceo de rotores, es frecuente encontrar temas tecnicos que dificilmente se desarrollan en los libros de texto, o que solo pueden deducirse mediante un estudio profundo y complejo. Por esta razon, un ingeniero dedicado a la practica que desee profundizar en el tema de balanceo de rotores, dificilmente podra comprender estos temas, a no ser que estos sean desarrollados con la orientacion especifica que los relacionen con la practica del balanceo. En este trabajo se presentan dos de esos temas relacionados con la definicion y obtencion de los parametros modales: a) la forma fundamental de los diagramas polares de respuesta, que puede ser circular perfecta en ciertos casos, y b) la relacion que existe entre las formas modales de un rotor y la distribucion de pesos que se deben colocar para balancear un modo dado.

  13. Rasgos del temperamento de los perros domésticos (Canis familiaris: evaluaciones conductuales

    Directory of Open Access Journals (Sweden)

    ADRIANA JAKOVCEVIC

    2009-01-01

    Full Text Available Los rasgos del temperamento se definen como tendencias conductuales estables entre situaciones similares y a lo largo del tiempo. En el presente trabajo se revisan las pruebas conductuales diseñadas para la evaluación de rasgos aislados del temperamento en los perros domésticos. Para cada dimensión se describen los estímulos empleados, las respuestas evaluadas y el correlato psiológico de las mismas. Los rasgos más estudiados fueron la temerosidad, la agresividad y la sociabilidad. Sin embargo, sólo la primera cuenta con correlatos psiológicos bien establecidos. Finalmente, las evaluaciones conductuales resultan de suma importancia para la selección de los perros para las distintas funciones que cumplen en la sociedad humana: detección de drogas, compañía, guardia, rescate de personas, etc.

  14. Evaluation of the useful life of steam turbine rotors; Evaluacion de vida util de rotores de turbinas de vapor

    Energy Technology Data Exchange (ETDEWEB)

    Carnero Parra, Antonio; Garcia Illescas, Rafael; Kubiak Szyszka, Janusz [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    1999-07-01

    This article presents the methodology applied by the Management of Turbomachinery of the Institute of Investigaciones Electricas (IIE), for the evaluation of the remaining useful life of steam turbine rotors in the phase of initiation of fissures. The evaluation of the remaining useful life of turbines, will reveal the real state of health of the rotor and will serve as a base for the future decision making that guarantees their structural integrity. [Spanish] El presentes articulo presenta la metodologia aplicada por la Gerencia de Turbomaquinaria del Instituto de Investigaciones Electricas (IIE), para la evaluacion de la vida util remanente de rotores de turbinas de vapor en la fase de iniciacion de fisuras. La evaluacion de la vida util de turbinas, revelar el estado real de salud del rotor y servira de base para la toma de decisiones futuras que garanticen su integridad estructural.

  15. Il ruolo delle politiche di bilancio nell'integrazione economica dell'Europa. (The role of fiscal policy in Europe’s economic integration

    Directory of Open Access Journals (Sweden)

    G. CAMPA

    2013-10-01

    Full Text Available Per raggiungere gli obiettivi previsti per " Europa 1992 ", un maggiore e più efficace coordinamento macroeconomico è necessario , sia all'interno di ciascun paese e all'interno della Comunità in generale. Il presente lavoro con la politica fiscale , sia a livello intracomunitario di coordinamento delle politiche nazionali , e al livello sovranazionale finalizzate ad assorbire le forze autonome di crescita diversificata. L'autore sostiene che, se una unione economica e monetaria richiede una politica regionale orientata di stabilizzazione e sviluppo , la politica economica di breve e medio termine , nel caso degli strumenti di bilancio , deve essere realizzato attraverso una disciplina sovranazionale con modi più dettagliati in cui le risorse può e deve essere trasferito da una regione all'altra e in cui tali risorse possono essere esentati da diverse regioni .To achieve the objectives set forth for “Europe 1992” a greater and more effective macroeconomic coordination is necessary, both within each country and within the Community at large. The present work deals with fiscal policy, both at the intra-Community level of coordination of national policies, and at the supranational level aimed at absorbing autonomous forces of diversified growth. The author argues that if an economic and monetary union requires a regionally oriented policy of stabilisation and development, the short and medium term economic policy, in the case of budgetary instruments, needs to be realised through a supranational discipline with more detailed ways in which resources can and must be transferred from one region to another and in which these resources may be exempted from different regions. JEL: F15, E62

  16. Paper and corrugated board recycling. Market, environmental aspects, economic analysis; Riciclo della carta e cartone. Mercato, aspetti ambientali, analisi economica

    Energy Technology Data Exchange (ETDEWEB)

    Gajani, L. [Smurfit Packaging Italia, Novi Ligure (Italy). Progetti Speciali

    1998-01-01

    . [Italiano] Il recupero di risorse da rifiuti solidi attraverso i molteplici flussi di raccolta e riciclo, ad esempio dei materiali costituenti gli Imballaggi, rappresenta una derivata della necessita` di mantenere la condizione di vita dell`Uomo la piu` integra possibile e di difendere l`Ambiente dalle continue aggressioni del processo tecnologico. Il recupero per essere efficace, continuativo e non rappresentare solo un serio onere per la Comunita`, deve poter sfruttare dei mercati di sbocco per i materiali raccolti allo scopo di ridurre i costi del sistema come pure avere spinte e motivazioni imprenditoriali. Nel 1995 la raccolta differenziata di carta e cartone in Italia ha registrato 2400 Kton di cui 1160 di Imballaggi in fase di post-consumo. Il risultato, mentre evidenzia un modesto tasso di raccolta pari al 28.3% (rapporto fra materiale raccolto e immesso nel mercato), mostra invece un interessante tasso di utilizzo pari al 50% (rapporto fra materiale prodotto e materiale riciclato). Ulteriori disponibilita` di materiale raccolto a base di fibra di cellulosa potra` essere efficacemente impiegato nella sostituzione di quello importato (1000 Kton) e nell`incremento dell`impiego della fibra di recupero nella produzione di carte grafiche ed in quelle igienico-sanitarie. L`analisi economica della raccolta differenziata di carta e cartone evidenzia che il ricavo dalla vendita del materiale raccolto, ridotto del costo incrementale della raccolta rispetto a quella indifferenziata (che in ogni caso si deve realizzare) ed ancora ridotto del costo della discarica (che essendo cessante risulta positivo), fornisce sufficiente evidenza che l`operazione e` nel suo complesso conveniente. Il Decreto Ronchi, stabilendo dei severi obiettivi di recupero (raccolta e riciclo) degli Imballaggi al termine del ciclo di vita, costituisce una spinta positiva all`incremento della raccolta differenziata. Gli Imballaggi a base di fibra di cellulosa si trovano prossimi al raggiungimento degli

  17. Integral power evaluation in fossil fuel power plants; Evaluacion energetica integral en unidades de centrales termoelectricas

    Energy Technology Data Exchange (ETDEWEB)

    Figueroa I, Luis R; Sanchez H, Laura E; Rodriguez M, Jose H [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Nebradt G, Jesus [Unidad de Investigacion y Desarrollo de la Subdireccion de Generacion de la Comision Federal de Electricidad, (Mexico)

    2006-07-01

    In this occasion, a methodology is presented that carries out an integral energy evaluation of fossil fuel power plants units (FFPPU) with the purpose of determining the root of the significant decrements of power produced soon after the annual maintenance service. This proposal, besides identifying the origin of the energy efficiency problems, offers information about the contributions of each one of the involved equipment in the total decrement of the unit. With this methodology, the maintenance focuses in the equipment that contributes to the greater energy loss. This document presents such methodology along with its application in a real case, results and necessary remedial actions, demonstrating that its application offers bases for the investment in corrective measures. [Spanish] En esta ocasion se presenta una metodologia que efectua una evaluacion energetica integral de las unidades de centrales termoelectricas (UCT) con el fin de determinar la raiz de los decrementos de potencia significativos producidos luego del servicio anual de mantenimiento. Dicha propuesta, ademas de identificar el origen de los problemas de eficiencia energetica, brinda informacion acerca de las aportaciones de cada uno de los equipos involucrados al decremento total de la unidad. Con esta metodologia, el mantenimiento se enfoca a los equipos que contribuyen a la mayor perdida de potencia. Este documento exhibe tal metodologia junto con su aplicacion en un caso real, resultados y las acciones correctivas necesarias, demostrando que su aplicacion ofrece bases para una inversion futura en medidas correctivas.

  18. Las evaluaciones externas y el rendimiento académico de los alumnos como instrumento de mejora educativa

    OpenAIRE

    López Bertomeo, Eduardo; González Olivares, Ángel Luis

    2018-01-01

    El presente artículo refleja la importancia que han adquirido las evaluaciones externas como instrumento de control, por parte de las Administraciones, del estado general de los sistemas educativos. Aunque es un tema de actualidad, la utilización de pruebas externas estandarizadas es tan antigua como los propios sistemas educativos, girando ya desde el inicio en torno al rendimiento académico de los alumnos. En la actualidad esas pruebas sirven de guía para la elaboración de leyes educativas ...

  19. Architecture's models: Integral thermal evaluation; Modelos en arquitectura: evaluacion termica integral

    Energy Technology Data Exchange (ETDEWEB)

    Roset, Jaume [Universidad Politecnica de Cataluna, Barcelona (Spain); Marincic, Irene; Ochoa, J. Manuel [Universidad de Sonora, Hermosillo, Sonora (Mexico)

    2000-07-01

    fin, se utilizan modelos que representen tanto la descripcion de los objetos y conceptos arquitectonicos, como las hipotesis sobre su comportamiento espacio-temporal. La cantidad y tipo de informacion que es necesario suministrar a un modelo para hacerlo operativo ha sido, y es, objeto de grandes controversias. La cuestion es: hasta que punto son mas utiles modelos con gran cantidad de entradas que otros mas simples? Entendiendo por modelos simples aquellos que habitualmente contienen cierta cantidad de coeficientes empiricos, lo que reduce el numero de datos, llevando el calculo a una aproximacion. Por otro lado, en el dominio de la arquitectura la informacion se presenta de manera habitual, sobre soportes de diferente tipo (tablas de valores numericos, planos, maquetas, ...). Las informaciones suministradas en cada tipo de soporte deben, necesariamente, ser combinadas de manera que se maximice la informacion contenida sobre el sistema global. En este trabajo, presentamos ejemplos referentes a estudios termicos que hemos realizado sobre diferentes maneras de abordar la evaluacion de modelos variables relacionados con el comportamiento termico de los edificios, la interaccion de estos con el medio ambiente que los rodea y su influencia sobre el confort en el interior de los mismos. Como conclusion general, podriamos decir que un modelo deberia tener las minimas entradas posibles con las cuales abordar los efectos mas significativos, que puedan representar de la manera mas aproximada posible al comportamiento real. Las hipotesis y condiciones de evaluacion de estos efectos deben ser comprendidas y asumidas por el usuario.

  20. Evaluacion cuantitativa del riesgo de entrada del virus de la gripe aviar altamente patogeno en la Comunidad Valenciana por importacion de aves vivas

    National Research Council Canada - National Science Library

    Sanchez-Vizcaino Buendia, F; Lainez Andres, M; Sanchez-Vizcaino Rodriguez, J.M

    2008-01-01

    ...) a lo largo de su historia. El objetivo de este trabajo es realizar una evaluacion cuantitativa del riesgo que hay de que el virus HPAI entre en la CV y sus provincias por importacion de aves vivas, e identificar los paises...

  1. RASGOS DEL TEMPERAMENTO DE LOS PERROS DOMÉSTICOS (CANIS FAMILIARIS: EVALUACIONES CONDUCTUALES

    Directory of Open Access Journals (Sweden)

    ADRIANA JAKOVCEVIC

    2009-08-01

    Full Text Available

    Los rasgos del temperamento se definen como tendencias conductuales estables entre situaciones similares y a lo largo del tiempo. En el presente trabajo se revisan las pruebas conductuales diseñadas para la evaluación de rasgos aislados del temperamento en los perros domésticos. Para cada dimensión se describen los estímulos empleados, las respuestas evaluadas y el correlato fisiológico de las mismas. Los rasgos más estudiados fueron la temerosidad, la agresividad y la sociabilidad. Sin embargo, sólo la primera cuenta con correlatos fisiológicos bien establecidos. Finalmente, las evaluaciones conductuales resultan de suma importancia para la selección de los perros para las distintas funciones que cumplen en la sociedad humana: detección de drogas, compañía, guardia, rescate de personas, etc.

  2. Evaluacion del clima organizacional en la Facultad de Odontologia de la Pontificia Universidad Javeriana desde una perspectiva integradora y participativa.(clima organizacional, Facultad de Odontologia de la Pontificia Universidad Javeriana )

    National Research Council Canada - National Science Library

    Gomez Villamizar, Mariela; Bermudez Gomez, Maria Constanza; Velosa Porras, Juliana; Paez Becerra, Francisco Javier; Ferro Camargo, Maria Beatriz

    2012-01-01

    Objetivo: en este articulo se presentan los resultados de la evaluacion diagnostica del clima organizacional de la Facultad de Odontologia de la Pontificia Universidad Javeriana de Bogota, Colombia. Metodos...

  3. Two-Phase Flow Evaluation in Geothermal Pipelines; Evaluacion de flujos bifasicos en tuberias geotermicas

    Energy Technology Data Exchange (ETDEWEB)

    Del Rio Garcia, Luis [Gerencia de Proyectos Geotermoelectricos de la Comision Federal de Electricidad, Morelia (Mexico)

    1996-01-01

    Pipe transportation of two phase-flow is a common practice in Mexican geothermal fields under commercial exploitation. Steam is separated from water using a centrifugal separator installed nearby a power plant. Afterwards, steam is conduced to the turbine and the water is reinjected into the reservoir. Sometimes the separation equipment are shared by two or more two-phase producing wells, so that the individual mass flow rate of each well is unknown. This paper is concerned with the evaluation of two-phase mass flow rates through sharp edged orifice plates, and attempts to establish the limits of steam quality in order that Murdock`s correlation gives acceptable results. This correlation was experimentally applied to well Az-25 of Los Azufres Geothermal field. In this case the single phase flows were determined after its separation by standard orifice plates (steam) and the weir box method. The results show that the Murdock`s correlation can be used for steam qualities of 50% and higher. [Espanol] El transporte de flujos bifasicos a traves de tuberias es una practica comun en los campos geotermicos mexicanos en la etapa de explotacion comercial. El vapor se separa del agua usando separadores centrifugos instalados en la vecindad de las unidades turbogeneradoras. Despues de esto, el vapor se conduce a las turbinas y el agua es reinyectada al yacimiento. En ocasiones, los equipos de separacion son compartidos por dos o mas pozos que producen flujos en dos fases, por lo que normalmente se desconocen tanto el gasto masico como la evolucion de la produccion de cada pozo. En este trabajo se propone una tecnica util en la evaluacion de flujos bifasicos, empleando placas orificio a partir de la correlacion de Murdock y se establece el intervalo de humedad para el cual el metodo proporciona resultados confiables. El metodo de Murdock fue aplicado experimentalmente al pozo Az-25 del campo geotermico de Los Azufres, para calidades de vapor entre 25 y 50%. En este caso los

  4. Training resources in renewable energy: study and evaluation; Recursos de capacitacion en energia renovable: estudio y evaluacion

    Energy Technology Data Exchange (ETDEWEB)

    De Buen Rodriguez, Odon [Energia, Tecnologia y Educacion, S.C., ENTE, S.C. (Mexico)

    2010-07-01

    The report herein describes the results of an evaluation process carried out to identify, document and analyze teaching and training capacities in the field of renewable energy for those who participate in the development, acquisition, installation, inspection and operation and maintenance of small- and large-scale wind, photovoltaic and solar water heating systems in North America. The document is divided into four sections. Chapter 1 presents the results of the evaluation process, expressed according to different parameters, as well as some of the significant findings. Chapter 2 responds to several questions related to difficulties, challenges, opportunities for improvement and recommendations, with a trilateral perspective. Chapter 3 evaluates the three technologies that are the focus of this study: photovoltaic, wind and solar heat. Chapter 4 describes the knowledge needed by those who professionally work in activities related to the three technologies mentioned, as well as their institutional context. The list of courses identified through this evaluation process are available on the CCA website, at www.cec.org/cursosenergia. [Spanish] El presente informe describe los resultados de un proceso de evaluacion llevado a cabo para identificar, documentar y analizar las capacidades en materia de ensenanza y capacitacion en energia renovable de quienes participan en la elaboracion, adquisicion, instalacion, inspeccion y operacion y mantenimiento de sistemas eolicos, fotovoltaicos y de calentamiento solar de agua -tanto pequenos como de gran escala-, en America del Norte. El documento se divide en cuatro partes. El capitulo 1 presenta los resultados del proceso de evaluacion, expresandolos en funcion de diferentes parametros, asi como ciertos hallazgos importantes. El capitulo 2 responde a diversas preguntas relativas a las dificultades, retos, oportunidades de mejoramiento y recomendaciones, con una perspectiva trilateral. El capitulo 3 evalua las tres tecnologias

  5. Evaluaciones económicas en salud: Conceptos básicos y clasificación

    OpenAIRE

    ZÁRATE,VÍCTOR

    2010-01-01

    El alza creciente de los costos en salud ha creado la urgente necesidad de evaluar económicamente las intervenciones de salud con el objetivo de priorizar aquellas que ofrecen un mejor valor o beneficio en relación a sus costos en un contexto local. El propósito de este artículo es entregar algunos principios básicos de evaluaciones económicas que mejorarán el conocimiento médico acerca de la metodología utilizada en este tipo de análisis y además ayudará a demostrar como la práctica clínica ...

  6. El impacto social en las evaluaciones de impacto ambiental: su conceptualización y práctica

    OpenAIRE

    Pardo Buendía, Mercedes

    1994-01-01

    El análisis del impacto social de las obras públicas es parte integrante de las Evaluaciones de Impacto Ambiental (EIA) en España. En este artículo se analiza el impacto social a través de la investigación de las Declaraciones oficiales de Impacto Ambiental y situándolas en un marco más amplio relativo al tipo de conceptualización del impacto social que se hace en la legislación aplicable, en las guías metodológicas de análisis para este campo y en los estudios de impacto ambiental concretos....

  7. A rapid appraisal process on an irrigation system in Pakistan; Evaluacion rapida de una zona de riego tipica de Pakistan

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz-Carmona, Victor Manuel; Ojeda-Bustamante, Waldo [Instituto Mexicano de Tecnologia del Agua, Jiutepec, Morelos (Mexico); Contijoch, Manuel [Banco Mundial (Mexico)

    2006-07-15

    This paper presents the results obtained on the implementation of a rapid appraisal process on an irrigation system in the province of Punjab in Pakistan. The purpose of the evaluation was to know the present irrigation service quality and to propose some alternative to improve it. The evaluation results were: the canal inflow is smaller than peak crop water requirement; net aquifer loss; crops are always under stress which is reflected on low crop yields, the secondary canal network has not control structures and was not designed for rotation, insufficient human-human communication between canal operators; the operators have no complementary training course to enhance their capacity; discrepancy between the service the canal is supposed to provide and the real service it offers. The suggested actions to improve the irrigation service were: the irrigation service must be client oriented; the irrigation users should participate to determine the irrigation service characteristics; the difference between actual and stage irrigation service must be eliminated; clear definition on water allocation; implement a modernization program to provide the irrigation service required. The evaluation methodology used can be applied in other countries like Mexico for the analysis of large irrigation systems making an optimal use of time and resources. [Spanish] En el presente trabajo se muestran los resultados obtenidos al aplicar una metodologia de evaluacion rapida de sistemas de riego a una zona de la provincia del Punjab, Pakistan. El objetivo de la evaluacion fue conocer el estado actual del servicio de riego que ofrece la agencia responsable del manejo del riego en un distrito del Punjab y proponer alternativas para mejorarlo. Los principales resultados de esta evaluacion fueron los siguientes: la falta de capacidad de los canales, el abatimiento neto del acuifero; el estres hidrico continuo de los cultivos, que propicia un bajo rendimiento; la red secundaria de canales no

  8. Il Corporativismo: un paradosso della politica economica dello stato fascista = Corporativism: a paradox of the economic policy of the fascist state

    Directory of Open Access Journals (Sweden)

    Natascia Ridolfi

    2014-12-01

    Full Text Available Uscito a pezzi dalla pesante crisi finanziaria e industriale del 1907, che aveva messo a nudo i limiti della struttura economica del Paese, il capitalismo industriale italiano elaborò un programma, portato avanti fino al primo dopoguerra, che prevedeva l’instaurazione di un governo di tecnocrati. Questo avrebbe dovuto trainare il Paese fuori dalla crisi, pianificarne l’economia e trasformarlo in una grande potenza industriale, con forti connotazioni imperialistiche. Segnali in tale direzione si erano registrati anche nei decenni precedenti, tra fine Ottocento e inizi Novecento, quando ebbe inizio un processo di concentrazione nel settore siderurgico e meccanico. Un percorso peraltro stimolato dalle commesse statali sempre più consistenti (Galli Della Loggia, 1970; Battilossi, 1999; Amatori e Colli, 1999; Bolchini, 2002. La crisi industriale e finanziaria del 1907 e la recessione a livello mondiale che ne seguì, accelerarono la soluzione tecnocratica, che prevedeva un’alleanza, più o meno stretta, con una parte della classe politica e l’entrata in guerra. Negli anni immediatamente seguenti il conflitto, il potere dei tecnocrati sulla scena politica italiana sembrò accrescersi notevolmente, soprattutto quando il governo progettò un programma di espansione economica nelle regioni del Caucaso, nei Balcani e nel Levante ex ottomano, territori in grado di fornire materie prime e di assorbire la produzione italiana in eccesso rispetto alle richieste di un mercato interno asfittico. La collaborazione tra mondo imprenditoriale, bancario e politico non produsse il risultato sperato. La caduta del governo Nitti e il ruolo destabilizzante e filotedesco della Banca Commerciale Italiana nell’Est europeo e nel Caucaso furono tra le cause principali che impedirono il decollo del progetto tecnocratico, provocando una dura reazione da parte dei fratelli Perrone alla guida del gruppo Ansaldo. Heavily Weakened by the financial and industrial crisis

  9. IMPACTO DE LAS EVALUACIONES INTERNACIONALES EN LAS POLÍTICAS CURRICULARES: LA EDUCACIÓN SECUNDARIA OBLIGATORIA EN ESPAÑA

    Directory of Open Access Journals (Sweden)

    Alejandra Montané López

    2008-09-01

    Full Text Available A través del análisis de los cambios legislativos en la Educación Secundaria Obligatoria (ESO en España, se analiza la relación, naturaleza e impacto de las evaluaciones internacionales de los alumnos y alumnas (concretamente PISA en las políticas educativas en general y, concretamente, en la configuración curricular de este periodo de la educación obligatoria. Asimismo, se relacionan estos cambios con los procesos neoliberales de privatización y estandarización promovidos por organismos transnacionales a través de uma agenda globalmente estructurada, mediante las evaluaciones internacionales, que determinan, de un modo gradual, contenidos y métodos educativos

  10. Sistema de análisis de información de encuestas en línea para evaluaciones en clase

    OpenAIRE

    Insuasti Insuasti, David Armando

    2012-01-01

    En este documento se describe un sistema de análisis de información de encuestas en línea que puede ser aplicado para realizar evaluaciones en clase a un estudiantes y generar reportes con los resultados obtenidos, además se describen los procesos de carga de información al sistema, el modelo de jerarquía de objetos dentro de la aplicación y los diferentes tipos de visualización que se derivan de los resultados obtenidos de la prueba aplicada.

  11. Valutazione economica dello studio IDEAL

    Directory of Open Access Journals (Sweden)

    Enrica Menditto

    2007-10-01

    Full Text Available Introduction: the IDEAL (“High-dose atorvastatin vs usual-dose simvastatin for secondary prevention after myocardial infarction” study was carried out to compare intensive lowering of low-density lipoprotein (LDL-cholesterol using the highest recommended dose of atorvastatin 80 mg with simvastatin 40 mg. Aim: our aim was to investigate the economic consequence of high dose of atorvastatin vs usual-dose of simvastatin in reducing major coronary events in patients with a history of acute myocardial infarction (AMI. Methods: the analysis is based on clinical outcome data from the IDEAL study. We conducted a cost-effectiveness analysis, comparing high dose of atorvastatin (80 mg/die versus usual-dose of simvastatin (20 mg/die in the perspective of the Italian National Health Service. We identified and quantified medical costs: drug costs according to the Italian National Therapeutic Formulary and hospitalizations were quantified based on the Italian National Health Service tariffs (2006. Effects were measured in terms of mortality and morbidity reduction (number of deaths, life years gained and frequency of hospitalizations. We considered an observation period of 4.8 years. The costs borne after the first 12 months were discounted using an annual rate of 3%. We conducted one and multi-way sensitivity analyses on unit cost and effectiveness. We also conducted a threshold analysis. Results: the cost of simvastatin or atorvastatin therapy over the 4.8 years period amounted to approximately 2.3 millions euro and 2.6 millions euro per 1,000 patients respectively. Atorvastatin was more efficacious compared to simvastatin and the overall cost of care per 1,000 patients over 4.8 years of follow-up was estimated at 4.3 millions euro in the simvastatin and 4,18 millions euro in the atorvastatin group, resulting into a cost saving of 121,518 euro that is 2.8% of total costs occurred in the simvastatin group. Discussion: this study is the first economic evaluation of IDEAL study based on the Italian context. Atorvastatin therapy is dominant since it is both less costly and more effective than simvastatin. Results of sensitivity analysis showed that atorvastatin therapy remains dominant even in the most unfavourable hypotheses.

  12. Valutazione economica dello studio CARDS

    Directory of Open Access Journals (Sweden)

    Simona de Portu

    2007-10-01

    Full Text Available Introduction: cardiovascular diseases (CVD are the major component of premature mortality, generate disability and are a relevant source of cost. The growing incidence of CVD is associated with lifestyle and other modifiable risk factors. Prevention and preclinical detection of CVD reduce morbidity and mortality. Type 2 diabetes is associated with a substantially increased risk of cardiovascular disease. Objective: the aim of the study was to evaluate the health economic consequence of medical therapy with atorvastatin for primary prevention of major cardiovascular events in patients with type 2 diabetes in Italy. Materials and method: in order to reach our objective we drew clinical information from the CARDS study. This economic evaluation was carried out conducting a cost/effectiveness analysis from the perspective of National Health Service (NHS. The analysis was applied to a time horizon in conformity with the observational period adopted in the CARDS study (3.9 years. An incremental cost/effectiveness ratio (ICER was calculated and is expressed as cost per life years gained (LYG. In order to test the robustness of the results, a one-way sensitivity analysis was performed. Results: the total cost of atorvastatin therapy over 3.9 years amounts to around 1.5 million of euros per 1,000 patients. The total cost of adding atorvastatin to standard care in people treated for primary prevention of major cardiovascular events in type 2 diabetes as those involved in the CARDS study would entail an additional cost of about 1,2 million of euros per 1,000 patients treated per 3.9 years, with an incremental cost/effectiveness ratio (ICER equivalent to 36,566 euros per patient per LYG. Discussion: the current study is the first economic evaluation of CARDS study to the Italian situation. The results of the current study show that hypolipemic therapy with atorvastatin 10 mg in diabetic individuals is to be considered cost effective.

  13. Data acquisition system and calculation for the evaluation of polluting emissions in stacks; Sistema de adquisicion de datos y calculo para la evaluacion de emisiones contaminantes en chimeneas

    Energy Technology Data Exchange (ETDEWEB)

    Leon Enriquez, Javier

    1999-06-01

    The present thesis work, was developed in Visual C++5, to replace the present procedure of calculation in Excel and to avoid the manual processing of the data obtained during the evaluation of polluting from stacks, with movable laboratories that make dilutions in the originating gaseous sample of the stack. Six projects in Visual C++5 were designed. The first five include the formulas and procedures of calculation to obtain the total particulate emission suspended originating of stationary sources (stacks), indicated in the Code of Federal Regulations (CFR) part 60, emitted by the Environmental Protection Agency of the United Sates (EPA). The last one, includes the calculations necessary to read archives generated by a card of data acquisition and to consider the factor of dilution of the gaseous sample. A standard business card for the data acquisition is used during the monitoring process of the variables that requires the sixth mentioned project previously. The results of the monitoring of variables and result of the calculations are stored in archives that conform a data base of the made work, which allows future, to compare the results of the measurements and calculations in different evaluations from a same user. The made work can be used by evaluators companies of polluting emissions in stacks that count on dilution equipment during the evaluation. [Spanish] El presente trabajo de tesis, fue desarrollado en visual C++5, para sustituir el procedimiento actual de calculo en Excel y evitar el procesamiento manual de los datos obtenidos durante la evaluacion de emisiones contaminantes en chimeneas, con laboratorios moviles que realizan diluciones en la muestra gaseosa proveniente de la chimenea. Se disenaron 6 proyectos en visual C++5. Los primeros cinco incluyen las formulas y procedimientos de calculo para obtener la emision de particulas suspendidas totales provenientes de fuentes fijas (chimeneas), indicadores en el Codigo de Regulaciones Federales (CFR

  14. Evaluaciones Estandarizadas: Seis Reflexiones Críticas Standardized Assessments: Six Critical Reflections Avaliações Padronizadas: Seis Reflexões Críticas

    Directory of Open Access Journals (Sweden)

    Ignacio Barrenechea

    2010-04-01

    Full Text Available Este trabajo presenta una revisión de la literatura que analiza seis limitaciones claves que tienen las evaluaciones estandarizadas. Las seis críticas que se presentan son: la tensión que existe entre el concepto de inteligencias múltiples y las evaluaciones estandarizadas, la desatención de componentes del curriculum real - el cual no necesariamente se agota en el curriculum prescripto, los riesgos de enseñar para el test, los incentivos que se generan de hacer trampa con los resultados, la falta de consideración de las diferencias socio económicas de los alumnos que son evaluados, y, por último, las limitaciones de los resultados de las evaluaciones estandarizadas para predecir el éxito laboral de los estudiantes. Este trabajo concluye que este tipo de evaluaciones, si bien pueden tener ciertas ventajas, cuando son usadas como el único instrumento para tomar decisiones educativas, las limitaciones son mayores que sus beneficios.

    This paper presents a review of the literature analyzing six key limitations of standardized evaluations. The six criticisms are the following: the tension that exists between the concept of multiple intelligences and the standardized evaluations, the disregard of components of the real curriculum - which is not necessarily exhausted in the prescribed curriculum, the risks of teaching to the test, the incentives that are generated to cheat or inflate the results of the tests, the lack of consideration of the economic differences of the pupils who are evaluated, and, finally, the limitations of the results of standardized evaluations as predictors of the labour success of the students. This paper concludes that when this type of evaluation is used as the only basis of educational decisions, the costs outweigh the benefits.


    Este trabalho apresenta uma revisão da literatura para a análise de seis limitações chave que têm testes padronizados. As seis limitações apresentados são: tens

  15. La participación ciudadana como criterio de valor en evaluaciones de carácter integral. Una aproximación desde la experiencia de AEVAL

    Directory of Open Access Journals (Sweden)

    Ana María Ruiz Martínez

    2015-11-01

    Full Text Available Desde hace años la cuestión de la participación ciudadana ha suscitado un notable interés. Tanto en el ámbito académico como desde organismos internacionales se han generado numerosos trabajos en relación con modelos y procesos de participación, evaluaciones de políticas públicas con enfoque participativo o considerando la participación como una variable explicativa de su éxito o fracaso. Sin embargo es dificultoso encontrar evaluaciones de políticas públicas que contemplen entre otros criterios de valor, el de participación. El problema que se pretende abordar en este artículo es cómo evaluar la participación ciudadana en procesos de evaluación de carácter integral y que por lo tanto abordan todo el ciclo de la política utilizando para ello múltiples criterios de valor. For years the issue of citizen participation has generated important interest. Both academia and international organizations have generated numerous studies concerning models and participatory processes, evaluations of public policies with participatory approach or considering participation as an explanatory variable for their success or failure. However it is difficult to find evaluations of public policies that include participation among other value criterion. The problem to be addressed in this article is how to evaluate public participation in comprehensive evaluation processes, and therefore address the full policy cycle using multiple value criteria.

  16. Methodology for evaluating the grounding system in electrical substations; Metodologia para la evaluacion del sistema de puesta a tierra en subestaciones electricas

    Energy Technology Data Exchange (ETDEWEB)

    Torrelles Rivas, L.F [Universidad Nacional Experimental Politecnica: Antonio Jose de Sucre (UNEXPO), Guayana, Bolivar (Venezuela)]. E-mail: torrellesluis@gmail.com; Alvarez, P. [Petroleos de Venezuela S.A (PDVSA), Maturin, Monagas (Venezuela)]. E-mail: alvarezph@pdvsa.com

    2013-03-15

    The present work proposes a methodology for evaluating grounding systems in electrical substations from medium and high voltage, in order to diagnose the state of the elements of the grounding system and the corresponding electrical variables. The assessment methodology developed includes a visual inspection phase to the elements of the substation. Then, by performing measurements and data analysis, the electrical continuity between the components of the substation and the mesh ground is verified, the soil resistivity and resistance of the mesh. Also included in the methodology the calculation of the step and touch voltage of the substation, based on the criteria of the International IEEE standards. We study the case of the 115 kV Pirital Substation belonging to PDVSA Oriente Transmission Network. [Spanish] En el presente trabajo se plantea una metodologia para la evaluacion de sistemas de puesta a tierra en subestaciones electricas de media y alta tension, con la finalidad de diagnosticar el estado de los elementos que conforman dicho sistema y las variables electricas correspondientes. La metodologia de evaluacion desarrollada incluye una fase de inspeccion visual de los elementos que conforman la subestacion. Luego, mediante la ejecucion de mediciones y analisis de datos, se verifica la continuidad electrica entre los componentes de la subestacion y la malla de puesta a tierra, la resistividad del suelo y resistencia de la malla. Se incluye tambien en la metodologia el calculo de las tensiones de paso y de toque de la subestacion, segun lo fundamentado en los criterios de los estandares Internacionales IEEE. Se estudia el caso de la Subestacion Pirital 115 kV perteneciente a la Red de Transmision de PDVSA Oriente.

  17. Technical-economic study of the development of a hydrogen-based energy system in Venezuela; Estudio tecnico-economico del desarrollo en Venezuela de un sistema energetico basado en el hidrogeno

    Energy Technology Data Exchange (ETDEWEB)

    Posso, F. [ULA-Tachira. San Cristobal (Venezuela)] email: fausto@ula.ve; Contreras, A. [ETSII-UNED (Venezuela)

    2009-09-15

    , transporte y distribucion, y usos finales. Estructuralmente, los modelos estan conformados por un submodelo de energia y un submodelo de costos. El modelo del SEHH en su conjunto se obtiene de la interconexion de los modelos de los componentes. La simulacion se hace para las condiciones de operacion y valores de los parametros mas favorables para los fines propuestos, utilizando el mismo horizonte temporal para todos los casos. Los resultados indican que la produccion anual de H{sub 2} debe aumentar para satisfacer las crecientes necesidades de energia de la poblacion rural considerada. Tambien que los costos totales anuales del SEHH disminuyen en el lapso de estudio, debido principalmente a la disminucion de los costos del componente Usos Finales, que marcan el comportamiento de los costos totales. La comparacion de los resultados obtenidos con los resultados de la bibliografia pone de manifiesto el interes del sistema propuesto, por resultar economica y medioambientalmente idoneo para la zona seleccionada, debido fundamentalmente a la disponibilidad de energia hidroelectrica barata en el pais. Se demuestra la viabilidad actual del desarrollo del SEHH al compararlo con la opcion de suministro de energia electrica a los centros poblados rurales por la via tradicional de tendido electrico.

  18. L'accessibilità: problema solo tecnico?

    Directory of Open Access Journals (Sweden)

    Vincenza Benigno

    2006-01-01

    Full Text Available Survey international guidelines and regulations to accessibility 'of the Web to illustrate the problems inherent in, the case is presented of the service areas Aessedi, a significant repository of experience-based training tools available, accessible and reusable.

  19. Contenedores: Aspectos tecnicos, biologicos y economicos

    Science.gov (United States)

    Tara Luna; Thomas D. Landis; R. Kasten. Dumroese

    2012-01-01

    La elección del contenedor es una de las consideraciones más importantes al establecer un nuevo vivero o empezar a producir una especie nueva. El tipo y tamaño de contenedor no sólo determina la cantidad de agua y nutrientes minerales que están disponibles para el crecimiento de una planta, sino que también afecta otros aspectos operativos del vivero, como el tamaño de...

  20. Detection and evaluation of corrosion zones at high temperature in steam generators; Deteccion y evaluacion de zonas de corrosion en alta temperatura de generadoras de vapor

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Villafane, Alberto; Chacon Nava, Jose G.; Huerta Espino, Mario; Mojica Calderon, Cecilio; Castillo Viveros, Antonio [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1990-12-31

    This paper presents the methodology for the detection and evaluation of high corrosion zones at high temperature. The results found up to now, show a critical zone in the Babcock Hitachi design, specifically in the high temperature reheater in the zone nearby the outlet header. In the normalized design CE (Mitsubishi) of 300 MW and CE (Canada) of 300 MW, the results found in recent years show small thickness reduction, therefore a good operation of these steam generators is recognized. [Espanol] En este trabajo se presenta la metodologia para la deteccion y evaluacion de zonas de corrosion en alta temperatura. Los resultados encontrados hasta el momento muestran una zona critica en el diseno Babcock Hitachi, especificamente en el recalentador de alta temperatura en la zona cercana al cabezal de salida. En el diseno normalizado CE (Mitsubishi) de 300 MW y CE (Canada) de 300 MW, los resultados encontrados en anos recientes muestran poca disminucion de espesor, por lo que se considera una buena operacion de estos generadores de vapor.

  1. Evaluation of environmental sustainability in the construction and management of buildings in Mexico; Evaluacion de la sustentabilidad ambiental en la construccion y administracion de edificios en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    De Buen Rodriguez, Odon [Energia, Tecnologia y Educacion, S.C., ENTE, S.C. (Mexico)

    2010-12-15

    fully international system of certification of environmental sustainability. In particular, it is recommended: 1) To suggest to CONUEE the integration of additional variables to its database, 2) To conduct a national survey of commercial buildings, 3) To review information on commercial buildings located in Mexico by international organizations. Likewise, besides the support of the CONUEE, it would be useful to carry out an study jointly with the Comision Federal de Electricidad (CFE), the Secretaria de Energia (SENER) and the Fideicomiso para el Ahorro de Energia Electrica (FIDE), in order to share and generate information for common analytical needs. Also, it is suggested to establish contact with chambers, associations and companies operating primarily in buildings such as schools, hospitals, hotels, department stores, supermarkets and restaurants. [Spanish] Esta investigacion tuvo como objetivo desarrollar una metodologia para la evaluacion de la sustentabilidad de los edificios en Mexico que pueda ser estandarizada y equiparable con el resto de Norteamerica. Con este proposito se revisaron y analizaron tres sistemas de evaluacion de edificaciones sustentables en Norteamerica: Leadership in Energy and Environmental Design (LEED), Living Building Challenge (LBC) y Energy Star for Buildings. Ademas, se incluyo en el analisis el sistema espanol Green Building Council Espana (GBCe) con el fin de tener un punto referencia distinto al norteamericano. Como resultado del analisis de los sistemas de evaluacion consultados se decidio utilizar Energy Star como sistema de referencia para el desarrollo de una metodologia propia por las siguientes razones: a) La metodologia de Energy Star permite la comparacion de consumos de energia, lo cual permitiria estimar emisiones de gas de efecto invernadero, b) Es el sistema que requiere de la descripcion mas sencilla del edificio (datos de area, de ocupacion y de demanda y consumo energeticos) y no requiere - a diferencia de los otros

  2. Assessment of wind potential at three sites in the state of Durango; Evaluacion del potencial eolico en tres sitios del estado de Durango

    Energy Technology Data Exchange (ETDEWEB)

    Saldana Flores, Ricardo; Miranda Miranda, Ubaldo

    2010-11-15

    As part of the activities of the project Laboratorio Nacional para la Evaluacion de los Recursos Renovables en Mexico (LERM), a preliminary estimate of the wind potential in three sites of Durango state was carried out, Lerdo (103 degrees 31 minutes 28 seconds W, 25 degrees 32 minutes 10 seconds N and 1140 m altitude), Guadalupe Victoria (104 degrees 07 minutes W, 24 degrees 27 minutes N and 2000 m altitude) and Santiago Papasquiaro (105 degrees 25 minuets 09 seconds W, 25 degrees 02 minutes 38 seconds N and 1720 m altitude). The following results were obtained from data analysis: Lerdo, measurement period February 2009 to January 2010 (20 m height), monthly wind speed average 1.790 to 2.960 m/s, mean power density 11.730 to 45.044 W/m{sup 2}, Guadalupe Victoria, measurement period March 2009 to February 2010 (50 m height), monthly wind speed average 3.200 to 6.440 m/s, mean power density 37.024 to 241.968 W/m{sup 2}; and Santiago Papasquiaro, measurement period April to August 2009 (30 m height), monthly wind speed average 2.290 to 4.320 m/s, mean power density 23.313 to 127.353 W/m{sup 2}. [Spanish] Como parte de las actividades desarrolladas dentro del proyecto Laboratorio Nacional para la Evaluacion de los Recursos Energeticos Renovables en Mexico (LERM), se llevo a cabo la estimacion preliminar del potencial eolico en tres sitios de interes del estado de Durango, Lerdo (103 grados 31 minutis 28 segundos O, 25 grados 32 minutos 10 segundos N y 1140 m de altitud), Guadalupe Victoria (104 grados 07 minutos O, 24 grados 27 minutos N y 2000 m de altitud) y Santiago Papasquiaro (105 grados 25 minutos 09 segundos O, 25 grados 02 minutos 38 segundos N y 1720 m de altitud). Analizando la informacion obtenida en diferentes periodos de medicion se obtuvieron los siguientes resultados: Lerdo, periodo de medicion de febrero de 2009 a enero de 2010 a 20 m de altura, velocidad promedio mensual del viento entre 1.790 y 2.960 m/s, densidad de potencia media entre 11.730 y 45

  3. Reliability of electric generation units by evaluating the loss of power and efficiency of turbines; Confiabilidad de las unidades de generacion electrica mediante la evaluacion de la perdida de potencia y eficiencia de las turbinas

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez Solis, Jose Antonio; Cristalinas Navarro, Victor Manuel [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2012-07-01

    The aim of the specialized technical service to evaluate the loss of power and efficiency of an open steam turbine is to quantify these losses caused by the deterioration of internal seals, deterioration of the steam path geometry components (nozzles and blades) and increased roughness of the blades and nozzle surface due to erosion (steam, humidity and impacts) and, also, due to salts deposition. In the same way, to establish a set of recommendations, in order of importance by the attention of the Power Plant with the purpose of recovering the major quantity of power and efficiency lost by the steam turbine and assurance, by means of technical supervision of the activities set in the recommendations, and in accordance with CFE rules, international standards and the personal experience of the Instituto de Investogaciones Electricas (IIE), staff, an acceptable quality in rehabilitation of mechanical components such as the maintenance of the steam turbine itself. Using an application example, this paper describes, the methodology of execution of this kind of services. Also, the quality of the maintenance and the rehabilitation of the steam turbine components are quantified. [Spanish] El objetivo del servicio tecnico especializado para evaluar la perdida de potencia y eficiencia de una turbina de vapor abierta es cuantificar dichas perdidas a causa del deterioro de los sellos internos, del deterioro la geometria de referencia de los componentes del canal de vapor (alabes fijos y alabes moviles) y del aumento de la rugosidad de la superficie de los alabes a causa de la erosion (marcas de vapor, de humedad y de impactos) y de la deposicion de sales. Asimismo, establecer una serie de recomendaciones en orden prioritario para la atencion de la central, con el fin de recuperar la mayor parte de la potencia y eficiencia perdidas por la turbina y asegurando, mediante la supervision tecnica de las actividades resultantes de las recomendaciones y conforme a la normativa de la

  4. Experimental evaluation of the consumption of electrical energy of domestic refrigerators in Mexico; Evaluacion experimental del consumo de energia electrica de refrigeradores domesticos en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Arroyo Cabanas, Fernando Gabriel [Programa de Energia, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico); Ambriz Garcia, Juan Jose; Paredes Rubio, Hernando Romero [Area de Ingenieria en Recursos Energeticos, Universidad Autonoma Metropolitana, Mexico, D.F. (Mexico)

    2004-06-15

    In this work the experimental methodology developed to carry out tests of the electrical energy of refrigerators consumption as norm NOM-015-ENER-2002 is described. The tests were made in the Laboratory of Controlled Environment of the Iztapalapa Unit of the Universidad Autonoma Metropolitana to a sample of old domestic refrigerators in operation. The results found show that the consumption of electrical energy of refrigerators of more than 10 years of age can be higher than 60% of what a modern refrigerator of high efficiency would consume, or 30% higher if the refrigerator was made between 1997 and 2002. With these results it is sustained, in a more complete way, the evaluation of the saving potential of the national electrical energy by the substitution of old domestic refrigerators by modern, as reported in a previous work. [Spanish] En este trabajo se describe la metodologia experimental desarrollada para efectuar pruebas del consumo de energia electrica a refrigeradores conforme la norma NOM-015-ENER-2002. Las pruebas se realizaron en el Laboratorio de Ambiente Controlado de la Unidad Iztapalapa de la Universidad Autonoma Metropolitana a una muestra de refrigeradores domesticos antiguos en operacion. Los resultados encontrados muestran que el consumo de energia electrica de refrigeradores de mas de 10 anos de antig�edad puede superior al 60% de lo que consumiria un refrigerador moderno de alta eficiencia, o superior en un 30% si el refrigerador fue fabricado entre 1997 y 2002. Con estos resultados se sustenta de manera mas completa la evaluacion del potencial de ahorro de energia electrica nacional por substitucion de refrigeradores domesticos antiguos por modernos reportado en un trabajo anterior.

  5. Evaluation of the different supported bifunctional electrocatalysts for unified regenerative cells; Evaluacion de diferentes soportes de electrocatalizadores bifuncionales para celdas regenerativas unificadas

    Energy Technology Data Exchange (ETDEWEB)

    Gurrola, M. P.; Torres-Amaya, D. S.; Duron-Torres, S. M.; Escalante-Garcia, I. L. [Universidad Autonoma de Zacatecas, Unidad Academica de Ciencias Quimicas, Zacatecas (Mexico)]. E-mail: duronsm@prodigy.net.mx; Arriaga-Hurtado, L.G. [Centro de Investigacion y Desarrollo Tecnologico en Electroquimica, Pedro Escobedo, Queretaro (Mexico)

    2009-09-15

    un solo dispositivo. Los retos de estos sistemas son aun mayores que en las celdas de combustible convencionales, siendo el problema tecnico mas apremiante, la optimizacion del electrodo de oxigeno. Los altos potenciales de operacion de estos dispositivos en el modo electrolizador, E >1.6 V vs. ENH, limitan el empleo de electrodos de Pt soportados en Vulcan. El Pt no es lo suficientemente electroactivo para catalizar la reaccion de evolucion de oxigeno (OER) y a estos potenciales los soportes basados en carbon sufren corrosion. Ademas de los estudios sobre materiales que funcionen como catalizadores bifuncionales, un importante numero de investigaciones se estan dirigiendo a la busqueda de nuevas matrices para su uso como soportes de electrocatalizadores para la OER y ORR{sup 1,2}. En este trabajo, se presentan los resultados preliminares obtenidos para el estudio cinetico de las reacciones de oxigeno, sobre diferentes mezclas de Pt con IrO{sub 2} y RuO{sub 2} soportados en diferentes formas de carbon y oxidos de titanio subestequiometricos. Los estudios se realizaron empleando voltamperometria ciclica (CV) y lineal (LV) para la OER y electrodo disco rotatorio (EDR) para la ORR en soluciones acuosas de H{sub 2}SO{sub 4} 0.5M. La tecnica de cronoamperometria (CA) proporciono informacion de la estabilidad electroquimica de los electrodos. Los resultados indican que los electrodos soportados en diferentes formas de carbon disminuyen paulatinamente su desempeno como consecuencia de la corrosion al realizar las reacciones de reduccion y formacion de oxigeno en ciclos consecutivos. Los oxidos de titanio, le confieren una mayor estabilidad a electrodos construidos sobre ese material, significando que pudieran representar un potencial como soporte para electrodos de oxigeno basados en mezclas de Pt, IrO{sub 2} y RuO{sub 2} como electrocatalizadores bifuncionales para las URFC.

  6. Evaluation and characterization of 30 solar home systems (SHS) Ovonic-Unisolar; Caracterizacion y evaluacion de 30 sistemas FV domiciliarios ovonic-unisolar

    Energy Technology Data Exchange (ETDEWEB)

    Flores, J. Roberto; Agredano, Jaime; Munguia, Gonzalo; Lagunas, Javier; Huacuz, Jorge [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico); Brennan, Steve [Troy, MI (United States)

    2000-07-01

    In this work the first results of the evaluation and characterization of 30 solar home systems (SHS) Ovonic-Unisolar (16 of 30 W and 14 of 60 W of capacity) are presented. The components of the SHS are: One or two PV modules, a charge controller, a nickel metal-hybride (NiMH) battery with a nominal capacity of 85 Ah rated at 3 hours, two or four 8 W lamps, and a CD/CD converter for connecting a radio or a TV W/B a maximum power of 20W. Of all systems evaluated, 29 were installed in three communities of the Oaxaca State, and the other 2 are installed at the Instituto de Investigaciones Electricas (IIE) the laboratory as prototype systems. Before the systems installation at the rural communities, all of them were tested in laboratory. Eight systems installed in the field are being monitoring with data acquisition systems. The main motivation of this projects is to know the behavior of the NiMH battery in the SHS. [Spanish] En este trabajo se presentan los primeros resultados de la caracterizacion y evaluacion de 30 sistemas fotovoltaicos (FV) domiciliarios Ovonic-Unisolar (16 con capacidad de 30 W y 14 con capacidad de 60 W). Los sistemas estan integrados por uno o dos modulos FV de 30 W (dependiendo de la capacidad del sistema), un controlador de carga con termo-interuptor, una bateria del tipo niquel hidruros metalicos (NiHM) con capacidad de 85 Ah a una razon de descarga de 3 horas, 2 o 4 lamparas compactas de alta eficiencia de 8 W y un convertidor CD/CD que permite a los usuarios utilizar una radiograbadora y/o una television B/N con potencia no mayor a 20 W. De estos 30 sistemas FV, 28 se instalaron en 3 comunidades rurales del Estado de Oaxaca y los dos sistemas restantes se tienen instalados en el laboratorio FV del Instituto de Investigaciones Electricas (IIE) como sistemas testigos. Previo a la instalacion en campo, todos los sistemas fueron evaluados en el laboratorio para garantizar su operacion en las comunidades rurales. De los 28 sistemas instalados en

  7. Fluids acidity in Los Humeros geothermal reservoir, Puebla, Mexico: Mineralogical evaluation; Acidez de los fluidos del yacimiento geotermico de Los Humeros, Puebla, Mexico: Evaluacion mineralogica

    Energy Technology Data Exchange (ETDEWEB)

    Izquierdo M, Georgina; Arellano G, Victor Manuel; Portugal M, Enrique; Aragon A, Alfonso [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico); Martinez, Ignasio [Comision Federal de Electricidad (Mexico)

    2000-12-01

    The occurrence of the acidity in fluids from Los Humeros geothermal reservoir has been noticeable due to the accelerated corrosion of pipes lines of wells located mainly in the area known as Collapse Central and wells along the East direction of the field. On the base of the evaluation of all available chemical and mineralogical information for Los Humeros geothermal field the main objective of this work was to recognize evidences on the origin of geothermal fluids acidity. Considering the occurrence of HCl in other geothermal systems, no relation to the available information from Los Humeros was found. It is possible that the geothermal fluids acidity would be recent. It could be generated when the deep reservoir was reached by drilling wells. However, the occurrence of H{sub 2}SO{sub 4} is evident due to the advance argillic alteration of surface rocks in some areas of the field. It is probable that the model proposed by D' Amore, may be valid for the geothermal field of Los Humeros. Considering that the origin of the vapor phase from the deep reservoir would be a fluid (of very high salinity) that favored the formation of the HCl gas; which moved to the vapor zone when exploitation began being transported in the vapor phase toward the upper reservoir forming aqueous HCl. [Spanish] La presencia de acidez en los fluidos producidos por el yacimiento geotermico de Los Humeros se ha evidenciado por la acelerada corrosion de las tuberias de algunos pozos localizados principalmente en la zona conocida como Colapso central y en direccion Este del campo. Con el objeto de identificar evidencias que permitan establecer el origen de la acidez en los fluidos geotermicos, se llevo a cabo la evaluacion de la informacion quimica y mineralogica existente para el campo geotermico de Los Humeros. Empleando los criterios conocidos sobre la presencia de HCl en otros sistemas geotermicos no se encontro relacion con la informacion evaluada. Por lo que se sugiere que la acidez en

  8. The reaction of teachers to external evaluations of schools: Proposition of a Model La Reacción de los Profesores a las Evaluaciones Externas de los Establecimientos Escolares: La Proposición de un Modelo

    Directory of Open Access Journals (Sweden)

    Diego Durán

    2004-03-01

    Full Text Available During the decade of the 1990s, several changes took place in education focusing on evaluating the academic achievements of students in their schools. Many of those assessments sought to reveal the "real" situation of the schools and their quality, in most of the cases limited to the academic performance of the students. Some of these assessments also sought to influence the organization of the schools. This article will discuss how the goal of regulating the system has not always been achieved. On the contrary, most of the time, one can discern an increasing resistance among the main actors of the system (especially teachers toward the politics of regulating schools through the use of assessment instruments. I present a model that allows a closer view of this conflict based on teachers' perceptions of these assessments and the educational project of their schools. Un sin número de cambios se han producido respecto de la atención prestada a los resultados de los alumnos en los establecimientos educacionales. Muchas son las evaluaciones de las escuelas que buscan dar cuenta del verdadero estado de éstas asi como de su calidad (en la mayoría de los casos limitada solamente a los resultados académicos de sus alumnos. Sin embargo, muchas de estas evaluaciones persiguen también un cierto efecto en las organizaciones educativas, unido a una eventual regulación del sistema educativo en general y de las escuelas en particular. Este objetivo, de regulación del sistema, no siempre es alcanzado y por el contrario muchas veces observamos una oposición creciente en los actores del sistema (principalmente los profesores, a este tipo de políticas. Este artículo presenta un modelo que permite une aproximación a este conflicto, a partir de la percepción de los profesores de estas evaluaciones como del proyecto educativo de sus escuelas.

  9. Principios básicos y alcances metodológicos de las evaluaciones económicas en salud Basic principles and methodological considerations of health economic evaluations

    Directory of Open Access Journals (Sweden)

    Cesar Loza

    2011-09-01

    Full Text Available La economía de la salud es un instrumento indispensable para la gestión sanitaria y las evaluaciones económicas, se pueden considerar como la herramienta que asiste a la toma de decisiones para asignar recursos en el área de la salud. Hoy en día, su uso es creciente en todas las regiones del mundo y fomenta la toma de decisiones basadas en la evidencia, buscando alternativas eficientes y racionales dentro del conjunto de actividades de los servicios. En esta revisión se efecturá una visión general y se delinea los tipos básicos de evaluación económica, sobre todo de las Evaluaciones Económicas (EE completas. Así mismo se revisará los conceptos más relevantes sobre las perspectivas desde las que se pueden realizar las EE, los tipos de costos, el horizonte temporal, los descuentos, la evaluación de la incertidumbre y las reglas de decisión. Finalmente, se describirán conceptos sobre la transferibilidad y la generalización de las Evaluaciones Económicas en salud.Health Economics is an essential instrument for health management, and economic evaluations can be considered as tools assisting the decision-making process for the allocation of resources in health. Currently, economic evaluations are increasingly being used worldwide, thus encouraging evidence-based decision-making and seeking efficient and rational alternatives within the framework of health services activities. In this review, we present an overview and define the basic types of economic evaluations, with emphasis on complete Economic Evaluations (EE. In addition, we review key concepts regarding the perspectives from which EE can be conducted, the types of costs that can be considered, the time horizon, discounting, assessment of uncertainty and decision rules. Finally, we describe concepts about the extrapolation and spread of economic evaluations in health.

  10. Valutazione economica dello studio CARDS: un aggiornamento

    Directory of Open Access Journals (Sweden)

    Simona de Portu

    2011-05-01

    clinical trial evaluating efficacy of atorvastatin versus placebo in preventing the occurrence of cardiovascular events in a cohort of type II diabetes patients without previous history of coronary events. A cost-effectiveness analysis in the perspective of the National Healthcare System (SSN has been performed, under the hypothesis of the imminent price reduction of atorvastatin, due to the loss of exclusivity. Results: after a median follow up of 3.9 years, the number of patients with at least a major cardiovascular event requiring hospitalization was lower in the atorvastatin arm (5.8% compared to the placebo arm (9.0%; p=0.001. Based on a cohort of 1,000 patients, treatment with atorvastatin permitted to gain 29.28 life years. The incremental cost of adding atorvastatin to the standard therapy amounted to €305,682, and was partially balanced by a cost reduction due to fewer hospitalizations, compared to the placebo arm (€ 168,313. Total direct costs were of €602.186 in the atorvastatin group and of € 464,818 in the placebo group, resulting into an incremental cost-effectiveness ratio of € 4,692 for Life Year Gained (LYG. Conclusion: the present study is an update of a previous economic analysis of the CARDS trial. Under the assumed new cost scenario, the cost-effectiveness profile of treating diabetic patients with atorvastatin becomes highly favourable, and leads to a significant reduction of the cost for Life Year Gained compared to the previous findings.

  11. Valutazione economica dello studio PROVE-IT

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    Lorenzo G. Mantovani

    2007-10-01

    Full Text Available Introduction: the PROVE-IT (“Intensive versus moderate lipid lowering with statins after acute coronary syndromes” was a comparison of pravastatin 40 mg/die versus atorvastatin 80 mg/die in patients with an acute coronary syndrome (ACS. Aim: our aim was to investigate the economic consequence of high dose of atorvastatin vs usual-dose of pravastatin in Italian patients with a history of acute coronary syndrome. Methods: the analysis is conducted on the basis of clinical outcomes of the PROVE-IT study. We conducted a cost-effectiveness analysis, comparing high dose of atorvastatin (80 mg/die versus usual-dose of pravastatin (40 mg/die in the perspective of the Italian National Health Service. We identified and quantified medical costs: drug costs according to the Italian National Therapeutic Formulary and hospitalizations were quantified based on the Italian National Health Service tariffs (2006. Effects were measured in terms of mortality and morbidity reduction (number of deaths, life years gained and frequency of hospitalizations. We considered an observation period of 24 months. The costs borne after the first 12 months were discounted using an annual rate of 3%. We conducted one and multi-way sensitivity analyses on unit cost and effectiveness. We also conducted a threshold analysis. Results: the cost of pravastatin or atorvastatin therapy over the 2 years period amounted to approximately 1.3 millions euro and 870,000 euro per 1,000 patients respectively. Atorvastatin was more efficacious compared to pravastatin and the overall cost of care per 1,000 patients over 24 months of follow-up was estimated at 3.2 millions euro in the pravastatin and 2.5 millions euro in the atorvastatin group, resulting into a cost saving of about 700,000 euro that is 27% of total costs occurred in the pravastatin group. Discussion: this study demonstrates that high does atorvastatin treatment leads to a reduction of direct costs for the National Health System. Atorvastatin therapy is dominant since it is both less costly and more effective than pravastatin. Results of sensitivity analysis showed that atorvastatin therapy remains dominant even in the most unfavourable hypotheses.

  12. Trasparenza economica e povertà

    Directory of Open Access Journals (Sweden)

    Helder Ferreira de Mendonça

    2007-03-01

    Full Text Available Nowadays, with the diffusion of inflation targeting, the main instrument that central banks use to achieve final objectives in the implementation of monetary policy (concerning inflation and unemployment is the interest rate. Furthermore, recent studies point out that central bank transparency contributes to reducing asymmetric information and price stability. As inflation, unemployment and interest rates are determinants of the level of poverty, the central bank's behaviour is relevant to its reduction. Accordingly, the present paper highlights the connection between economic transparency and poverty. The theoretical and empirical results denote that central bank transparency is a useful strategy in reducing income inequality and poverty.

  13. Alineación entre las evaluaciones externas y los estándares académicos: El Caso de la Prueba Saber de Matemáticas en Colombia.

    Directory of Open Access Journals (Sweden)

    Lopez, Alexis A.

    2013-09-01

    Full Text Available En este estudio se analiza el concepto de alineación presentando los resultados de un estudio que examina el grado de alineación entre una evaluación estandarizada de matemáticas y unos estándares académicos. La alineación se examinó usando el modelo de Webb y los resultados sugieren que el grado de alineación entre las evaluaciones estandarizadas y los estándares académicos no es el más adecuado y por lo tanto los resultados se deben interpretar con mucha cautela y se debe poner mucho cuidado con el tipo de decisiones que se toman con base en los resultados.

  14. Regional assessment of anthropogenic impacts on air, water and soil, case: Huasteca Hidalguense, Mexico; Evaluacion regional del impacto antropogenico sobre aire, agua y suelo, caso: Huasteca Hidalguense, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Gordillo Martinez, Alberto Jose; Cabrera Cruz, Rene Bernardo Elias; Hernandez Mariano, Marisol; Galindo, Erick; Otazo, Elena; Prieto, Francisco [Centro de Investigaciones Quimicas, Universidad Autonoma del Estado de Hidalgo, Pachuca, Hidalgo (Mexico)]. E-mail: gordillo@uaeh.edu.mx; rcabreracruz@yahoo.com.mx

    2010-08-15

    The state of Hidalgo, Mexico presents an important environmental problem that manifests itself in different ways. To identify the sources, types and the magnitude of pollutants, an inventory of sources of industrial and domestic pollution for air, water and soil in ten municipalities of the Huasteca Region of the state was carried out using the technique of Rapid Assessment of Sources of Environmental Pollution and the results are reported in this paper. A total of combined pollutants emitted was 116 978.95 tons/year. Gasoline vehicles contributed 11 039 tons/year of air pollutants and diesel vehicles 1521 tons/year. For water, industrial sources contributed 22 496 tons/year and domestic effluents 15 776 tons/year. Soil pollution was a result of industrial solid waste, 4025 tons/year, and municipal solid waste, 62 121 tons/year. By municipality, Huejutla de Reyes is the most polluted in air, water and soil, with 53 % of the regional total. These results were evaluated in relation to environmental quality of each medium based on the Mexican regulations; these levels are above permissible limits for water and soil. A database with relevant information was prepared as a support for efficient management of pollutant emissions, provide base mark data for complementary studies, and to promote the future conservation of environmental quality and the biological richness of the area. [Spanish] El estado de Hidalgo, Mexico presenta una importante problematica ambiental que se manifiesta de manera heterogenea a lo largo de su territorio. Existe la necesidad de conocer las fuentes, tipos de agentes contaminantes y su magnitud. En este trabajo se realizo un inventario de la contaminacion emitida por fuentes de origen industrial y domestico en aire, agua y suelo en diez municipios de la region de la Huasteca por medio de la tecnica de Evaluacion Rapida de Fuentes de Contaminacion Ambiental (ERFCA). El total de la contaminacion emitida fue de 116 978.95 ton/ano. Las emisiones al

  15. Evaluacion de mapas de disparidad

    National Research Council Canada - National Science Library

    Cabezas, Ivan; Trujillo, Maria

    2013-01-01

    Un mapa de disparidad es la salida de un algoritmo de estimacion de puntos correspondientes, el cual es estimado en una etapa intermedia del proceso de reconstruccion de la profundidad a partir de dos o mas imagenes...

  16. Technical Problems and Political Uses of National Assessments in the Argentinian Educational System Problemas Técnicos y Usos Políticos de las Evaluaciones Nacionales en el Sistema Educativo Argentino.

    Directory of Open Access Journals (Sweden)

    Silvina Gvirtz

    2006-07-01

    Full Text Available This article presents results from different research investigations which have explored the relations between the technical and the political dimension of the assessment of educational systems. The case study taken on for this matter is the national evaluation system in force in Argentina since 1993. In the first part we present some technical problems which the implementation of this system has encountered in this country. In the second part we carry out an analysis of these technical inconveniences, within the political context of educational reform in which the evaluation system arises and develops. In addition, we present an analysis of the effective use of the information provided by the evaluations. Finally, in the conclusions, we present some considerations on the role of national evaluations in educational reform contexts, and on the prospects of their consolidation as systems which inform in a valid and reliable form about the course of education in the mid and long term. Este artículo presenta resultados de investigaciones que han explorado las relaciones entre la dimensión técnica y la dimensión política de la evaluación de sistemas educativos, tomando como caso el sistema de exámenes nacionales vigente en la Argentina desde 1993. En la primera parte del trabajo exponemos algunos problemas técnicos que ha presentado la puesta en marcha del sistema de evaluación nacional en el mencionado país. En la segunda parte realizamos una lectura de estos inconvenientes técnicos en el marco del contexto político de reforma educativa en el que el sistema de evaluación surge y se desarrolla. Asimismo, analizamos los usos efectivos que se han hecho de la información provista por las evaluaciones. Por último, en las conclusiones, presentamos reflexiones acerca de la función de las evaluaciones nacionales en contextos de reforma educativa, y de las posibilidades de su consolidación como sistemas que informen de forma válida y

  17. HACIA UNA VISION SOCIOLOGIA DE LA ACCION ECONOMICA: DESARROLLOS Y DESAFIOS DE LA SOCIOLOGIA ECONOMICA

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    Minor Mora Salas

    2004-07-01

    Full Text Available Este artículo analiza las principales contribuciones de una corriente emergente dentro del campo de la sociología denominada por quienes han promovido su desarrollo como sociología económica. Se sistematizan en el texto un conjunto de propuestas analíticas y formulaciones teóricas que en la bibliografía aparecen dispersas, pero cuya articulación enriquecería la comprensión que tenemos sobre el origen, configuración y dinámica de los mercados y de la acción económica de los sujetos sociales.El texto se estructura en torno a cuatro ideas básicas. Primero, que los mercados no son realidades universales y autocontenidas, sino, por el contrario, productos socio-históricos. Suconfiguración, estructura y dinámica están cruzadas por la presencia de instituciones sociales que hacen viable su surgimiento, consolidación y desarrollo. Segundo, que la acción económica no es llevada a cabo por agentes individuales dotados de una racionalidad económica que se superpone a cualquier otro tipo de racionalidad.

  18. Voltage stability evaluation facing small disturbances by means of the modal analysis technique; Evaluacion de la estabilidad de voltaje ante disturbios pequenos mediante la tecnica de analisis modal

    Energy Technology Data Exchange (ETDEWEB)

    Leon Rodriguez, Daniel

    2000-12-15

    . Estos aspectos han provocado que dichos sistemas operen con margenes de seguridad mas limitados y que su estabilidad tenga que ser analizada de una manera confiable y precisa. Tomando en cuenta los aspectos arriba mencionados, a medida que los sistemas electricos han tenido que operar en condiciones mas forzadas para satisfacer la demanda de la carga, los problemas de estabilidad de voltaje se han presentado con mayor frecuencia provocando serios disturbios y en algunos casos, hasta apagones totales. Ante la ocurrencia de estos problemas, el analisis de establidad de voltaje ha cobrado cada vez mayor importancia en los estudios de las companias suministradoras de energia electrica provocando con esto que se destinen mayores recursos para la investigacion de este fenomeno con el proposito de comprenderlo y desarrollar tecnicas y herramientas que permitan estudiarlo de una manera mas completa. El analisis modal es una de las mas recientes tecnicas en estado estable la cual, desde su aparicion ha tenido un gran auge debido a la valios y rapida informacion que proporciona, ademas de su facilidad de implementacion y el poco esfuerzo computacional que requiere. En este trabajo se realiza la evaluacion de la estabilidad de voltaje d eun sistema electrico real aplicando de manera conjunta la tecnica de analisis modal con otras tecnicas convencionales como las curvas P-V y V-Q. Se ilustra tambien la manera en que la distinta informacion obtenida de estas tecnicas se complementa para lograr un estudio de estabilidad de voltaje mas completo y representativo. Ademas de analizar la estabilidad de voltaje para las condiciones normales de operacion (caso base), se evaluan tambien tres distintas alternativas de compensacion reactiva capacitiva con objeto de mejorar el margen o distancia a la inestabilidad de voltaje del sistema. Los resultado obtenidos con cada una de las opciones de compensacion son analizados y comparados entre si para finalmente proponer la alternativa que presente

  19. Electro-economic, environmental and social consequences in the efficient abatement of a hydroelectric plant (C. H. Santa Rosa, CFE-ACO); Consecuencias electro-economicas, ambientales y sociales del abatimiento eficiente de una central hidroelectrica (C. H. Santa Rosa, CFE-ACO)

    Energy Technology Data Exchange (ETDEWEB)

    Narvaez Perez, Camilo; Garcia Conejo, Dante Aristoteles [Comision Federal de Electricidad, Centro Nacional de Control de Energia, Area de Control Occidental, Zapopan, Jalisco (Mexico)]. E-mail: camilo.narvaez@cfe.gob.mx; camilo.narvaez@univa.mx; Narvaez Perez, Claudia Universidad de Guadalajara, Zapopan, Jalisco [Mexico]). E-mail: claudia_narvaez@hotmail.com; Blanco Gomez, Cesar Eduardo [Comision Federal de Electricidad, Centro Nacional de Control de Energia, Area de Control Occidental, Zapopan, Jalisco (Mexico)

    2013-03-15

    Renewable energy systems, like hydroelectric generation system gives electric energy, in reliable economic, it takes care with environment, and growths the society, if the hydroelectric dam is suitably drained in non rainy season, if we consider, flow rate in its river, rain, thunderstorms and floods, dam's size, load shape per day, generators capacity unit and the flow in turbines, generating units maintenance and other necessities like irrigation crops in farms. In this research we propose a new methodology about hydroelectric dam drained in non rainy season. But in rainy season, you can consider this methodology with few changes and you would obtain satisfactory results. The methodology is used since 2010 in the Area de Control Occidental in the Comision Federal de Electricidad with results compared with data from previous years, in which different methodologies were applied. [Spanish] Los sistemas de energias renovables, como los complejos hidroelectricos impactan de manera electrica, economica, ambiental y social, siempre y cuando se realice adecuadamente el abatimiento de la presa en el estiaje, considerando, el aporte del cauce, las lluvias aun siendo escasas, el tamano del embalse, la demanda horaria de la carga abastecida, el tamano de los generadores y su gasto turbinado, los mantenimientos de las unidades, las necesidades hidraulicas aguas abajo y demas imponderantes. En esta investigacion se propone una metodologia de abatimiento de presas de centrales hidroelectricas en estiaje. Y para tiempo de lluvias se aplica la metodologia con variantes pequenas y con resultados satisfactorios. La metodologia es utilizada desde el 2010 en el Area de Control Occidental de la Comision Federal de Electricidad, con resultados comparados con los datos de los anos anteriores, en los cuales se aplicaron metodologias diversas.

  20. El ordenador en la didactica del Dibujo Tecnico.

    OpenAIRE

    SANCHEZ BAUTISTA, JOSE MANUEL

    2011-01-01

    Sabemos que la Didáctica del Dibujo Técnico es un tema poco estudiado por investigadores introducidos en este campo, y aún menos la aplicación de Nuevas Tecnologías Didácticas en la impartición de estas asignaturas. Es por ello, que iniciamos un estudio de todos los aspectos que intervinieron en la introducción del ordenador en la nueva didáctica del dibujo técnico, haciendo hincapié en la aplicación de esta Nueva Tecnología Didáctica en la actual impartición del ...

  1. INFORME TECNICO PROYECTO N° 105151-04 Medicina Social ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    user

    2 Feb 2013 ... La participación de los miembros de COPEH-LAC en eventos internacionales ha proporcionado un medio particularmente útil para difundir el enfoque de Ecosalud, la creación de redes con personas interesadas en la aplicación del enfoque de Ecosalud, afianzar relaciones, la construcción de nuevos ...

  2. International Scientific and Technical Organisations; Organismos Cientifico-Tecnicos Internacionales

    Energy Technology Data Exchange (ETDEWEB)

    Nunez-Lagos Rogla, R. [Universidad de Zaragoza (Spain)

    2003-07-01

    The nuclear scientific and technical world is well aware of the EURATOM and IAEA activities but usually other international scientific and technical organisations relevant for their ordinary work are unknown. In this article three international organisations are described briefly, the International Union of Pure and Applied Physics (IUPAP). International Union of Pure and Applied chemistry (IUPAC) and the international council of Science (ICSU). (Author)

  3. Indagine conoscitiva sui fabbisogni formativi del personale tecnico-sanitario

    Directory of Open Access Journals (Sweden)

    Marina Crovatto

    2003-12-01

    Full Text Available The primary objective of AMCLI is to provide efficient, high quality continuing education.The CoTeLab has prepared a questionnaire including the main groups of interest of Laboratory Technologists, either of a specific or general nature, as well as other eventual arguments, suggestions and observations in order to understand the real necessity of training. The questionnaire was answered by 464 technicians of which 71% females and 29% males, most of interviewed were between 41 and 45 years of age with variable experience. Scolarity was not homogeneous due to Italian evolution in the past years. The necessity to up-date knowledge in the laboratory in which day-to-day work is performed and an elevated interest in molecular biology was evidenced. Quality control, biological hazard and hospital infections were the arguments most requested. The procedure of accreditation and/or certification already obtained in many laboratories, and the problems involved in new technologies are certainly factors that bring attention to Quality Control. The response in respect of biological hazards is due to the implementation of DL 626/94 and its successive modifications. Hospital infections have always been an important subject of microbiology and have gained much attention thanks to the new technologies offered (molecular epidemiology Theoretical and practical training is mainly requested and evidences the technician’s need to understand routine procedures and not only to perform them. New technologies are the general arguments most requested and preferred. Surprisingly long distance education is not requested, probably since it has not yet been activated and the modality is not clear. In conclusion this study has hallowed us to have a reliable perspective of the educational needs of technologists and will permit us to gradually construct a high quality, efficient continuing education program that will certainly give positive results in the total quality of results referred to physicians.

  4. Evaluation of a process for the removal of gases contained in geothermal steam through condensation and re-evaporation; Evaluacion de un proceso de remocion de gases contenidos en el vapor geotermico, por medio de la condensacion y de revaporacion

    Energy Technology Data Exchange (ETDEWEB)

    Angulo C, Raul; Lam Rea, Luis; Garmino, Hector; Jimenez, Humberto [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1985-12-31

    The Cerro Prieto I Geothermal Field, developed and operated by the Comision Federal de Electricidad (CFE), has currently an installed electric power generation capacity of 180 MW and is at a very advanced stage in the development of Cerro Prieto II and III, which will allow to raise the generation capacity to 620 MW. During the exploitation of a geothermal field, in producing steam with the purpose of generating electricity, brines and waste gases are obtained. The hydrogen sulfide exhaust to the environment implies pollution problems, for this reason processes have been developed for the oxidation of these gases downstream the turbogenerator either in the flow of separated gases in the steam condensation or in the condensate produced. The Instituto de Investigaciones Electricas (IIE) has collaborated with CFE in the evaluation of the environmental impact of this gas and in the development of the processes for its abatement. [Espanol] El campo geotermico de Cerro Prieto I, desarrollado y operado por la Comision Federal de Electricidad (CFE), actualmente tiene una capacidad instalada de generacion de energia electrica de 180 MW, y se encuentra en etapa muy avanzada, el desarrollo de Cerro Prieto II y III, lo que permitira incrementar la capacidad de generacion a 620 MW. Durante la explotacion de un campo geotermico, al producir vapor con el proposito de generar electricidad, se obtienen salmueras y gases de desecho. La descarga de acido sulfhidrico a la atmosfera implica problemas de contaminacion, por esta razon se han desarrollado procesos para la oxidacion de este gas aguas abajo de la turbina generadora, ya sea en la corriente de gases que se separan en la condensacion del vapor o en el condensado producido. El Instituto de Investigaciones Electricas (IIE) ha colaborado con la CFE en la evaluacion del impacto ambiental de este gas y en el desarrollo de sus procesos de abatimiento.

  5. Summary of the 2010 assessment on medium- to low-temperature geothermal resources in Mexico; Resumen de la evaluacion 2010 de los recursos geotermicos mexicanos de temperatura intermedia a baja

    Energy Technology Data Exchange (ETDEWEB)

    Iglesias, Eduardo R.; Torres, Rodolfo J.; Martinez Estrella, J. Ignacio; Reyes Picasso, Neftali [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)]. E-mail: iglesias@iie.org.mx

    2011-07-15

    geothermal systems lies between 1,168 EJ and 1,274 EJ, with 90% confidence. The statistical distribution of the (conservatively) inferred reservoir temperatures indicates that 5% of these systems have temperatures between 151 and 208 degrees Celsius, 40% of these systems have temperatures between 102 and 151 degrees Celsius, 50% of these systems have temperatures between 60 and 102 degrees Celsius, and 5% of these systems have temperatures between 36 and 60 degrees Celsius. These resources contain massive amounts of thermal energy that could be used in a wide variety of direct applications and power generation projects. Potentially they are important for the economy of 26 of the 32 Mexican States. This work does not include any attempt to estimate the recuperation factor of the estimated resources. [Spanish] En 2003 publicamos nuestra primera estimacion de los recursos geotermicos mexicanos de temperatura intermedia a baja (T {<=} 200 grados centigrados) con base en datos de 1358 manifestaciones superficiales identificadas en ese momento. Debido a falta de informacion en uno o mas parametros relevantes, como coordenadas geograficas, temperatura de muestra o del yacimiento, etc., dicha evaluacion incluyo aproximadamente 30% de las manifestaciones identificadas. Desde entonces nuestro grupo incremento significativamente la cantidad de la informacion en la base de datos, mediante compilacion de datos de diferentes fuentes y trabajo de campo. Posteriormente desarrollamos una base de datos relacional y la implementamos en un Sistema de Informacion Geografica (SIG). En este trabajo presentamos un resumen de nuestra evaluacion 2010 de los recursos geotermicos mexicanos de temperatura intermedia a baja resultante de nuestra base de datos actualizada, que incluye 2361 manifestaciones geotermicas. Como en la version precedente, utilizamos el metodo volumetrico y simulaciones Montecarlo para estimar los recursos geotermicos y sus correspondientes incertidumbres para cada sistema

  6. Heat transformers simulation coupled to industrial processes and experimental evaluation of a thermal transformer of two KW power; Simulacion de transformadores de calor acoplados a procesos industriales y evaluacion experimental de un transformador termico de dos kw de potencia

    Energy Technology Data Exchange (ETDEWEB)

    Cerezo Roman, Jesus

    2001-12-15

    recovering temperature and between 42% and 96% at high temperature for the use of this additives. [Spanish] La quema de combustibles primarios en los diferentes sectores industriales y de transporte, han provocado grandes problemas de salud a la humanidad y contaminacion al medio ambiente, debido principalmente a sus altas emisiones de sustancias y gases, ademas de problemas socioeconomicos en muchos paises. Debido a esto, muchos paises estan investigando nuevas tecnologias alternas para su sustitucion. Uno de los principales tecnologias propuestas son los transformadores de calor. Estos equipos son capaces de ahorrar energia calorifica principalmente en procesos industriales. Debido a esto, estas tesis realiza estudios teoricos de transformadores de calor en procesos industriales tipicos de la region como es la destilacion de derivados de petroleo y refinacion de azucar morena, para observar la energia que puede ser ahorrada por el uso de estos equipos. Por otra parte se realizo una evaluacion experimental de un transformador de calor con aditivos debido a que aumentan la absorcion en el absorbedor, mejorando el coeficiente de operacion. En la simulacion de la columna de destilacion de petroleo se utilizo el simulador de procesos quimicos Aspen Plus version 9.3-2, debido a que este tiene modelos termodinamicos muy confiables para estudiar el comportamiento de cada uno de sus componentes. Los resultados mostraron que con el transformador de calor de una etapa operando con la mezcla LiBr-H{sub 2} O se puede ahorrar hasta un 45% de la energia suministra a la caldera y hasta un 32% con el transformador de doble absorcion. Para la modelacion de la refineria del azucar morena se uso el paquete Visual Basic, version 6.2. El paquete fue utilizado debido a que es un lenguaje grafico y de facil manejo. Los resultados mostraron que se puede recuperar hasta un 15% de la energia suministrada a la caldera. En la experimentacion se utilizo la mezcla bromuro de litio-agua y bromuro de

  7. Teoria e politica do financiamento na ortodoxia economica

    OpenAIRE

    Simone Silva de Deos

    2001-01-01

    Resumo:Nesse trabalho, analisamos a história do pensamento sobre o financiamento após a "era keynesiana", dentro da corrente principal da teoria econômica - mais especificamente, na macroeoconomia de curto prazo. Ao fazê10, verificamos que há dois momentos importantes - e virtualmente únicos - nos quais esse tema torna-se, efetivamente, um objeto na análise convencional. O primeiro dá-se no início da década de 1970, quando a teoria da repressão financeira é apresentada e ganha influência. Na ...

  8. Formas de Vida Economica en el Arte Rupestre Levantino

    Directory of Open Access Journals (Sweden)

    Francisco JORDÁ CERDÁ

    2009-10-01

    Full Text Available Parece fuera de toda duda que las pinturas rupestres levantinas, dado su carácter eminentemente narrativo e historicista, son una buena fuente de información para estudiar la vida y costumbres de los pueblos entre los que vivían los artistas que las realizaron. En sus múltiples y variadas escenas nos encontramos con fragmentos de su vida diaria, de sus actividades económicas e incluso podemos atisbar los rasgos de su organización social y de sus ideas religiosas.

  9. Sylos Labini su Marx: implicazioni per la politica economica

    Directory of Open Access Journals (Sweden)

    Massimo Cingolani

    2015-04-01

    Full Text Available This article considers Sylos Labini’s works on Marx (Sylos Labini, 1991; 1994. It places the Italian economist’s assessment of Marx in the context of the former’s wider economic production (both previous and subsequent to the 1991 article and the debate that followed his “Carlo Marx: è tempo di un bilancio”. Such article, written right after the fall of Berlin’s Wall, attempted at developing a fair assessment of Marx’s thought, seen as one of the most important Classical economists and, from many points of view, a precursor of Keynes. Sylos Labini criticised Marx’s political position and what Sylos perceived as his “unethical behaviour”. On the contrary, he held Marx the economist in great regard.JEL Codes: B24, B51, P50 

  10. Sylos Labini su Marx: implicazioni per la politica economica

    Directory of Open Access Journals (Sweden)

    Massimo Cingolani

    2015-03-01

    Full Text Available This article considers Sylos Labini’s works on Marx (Sylos Labini, 1991; 1994. It places the Italian economist’s assessment of Marx in the context of the former’s wider economic production (both previous and subsequent to the 1991 article and the debate that followed his “Carlo Marx: è tempo di un bilancio”. Such article, written right after the fall of Berlin’s Wall, attempted at developing a fair assessment of Marx’s thought, seen as one of the most important Classical economists and, from many points of view, a precursor of Keynes. Sylos Labini criticised Marx’s political position and what Sylos perceived as his “unethical behaviour”. On the contrary, he held Marx the economist in great regard.

  11. La politica economica del fascismo. La crisi del ‘29

    Directory of Open Access Journals (Sweden)

    Paolo Sylos Labini

    2014-03-01

    Full Text Available Text of a speech held at the University of Rome in 1965. The author discusses the economic policy of Fascism, claiming that several of its characteristic features, e.g. the policy of industrial and financial bailouts, the policy of industry cartels and firms’ groups, and protectionism, were part of an international trend. In these areas international similitudes probably outweigh differences. What was peculiar of Fascism was the approach towards trade unions and the peculiarly corporatist policy.

  12. La politica economica del fascismo. La crisi del ‘29

    Directory of Open Access Journals (Sweden)

    Paolo Sylos Labini

    2014-03-01

    Full Text Available Text of a speech held at the University of Rome in 1965. The author discusses the economic policy of Fascism, claiming that several of its characteristic features, e.g. the policy of industrial and financial bailouts, the policy of industry cartels and firms’ groups, and protectionism, were part of an international trend. In these areas international similitudes probably outweigh differences. What was peculiar of Fascism was the approach towards trade unions and the peculiarly corporatist policy.    JEL codes: N14, N34, N44 Keywords: fascism, economic policy, corporatism  

  13. Estructura economica y desempleo en Colombia: un analisis VEC

    National Research Council Canada - National Science Library

    Bonilla Cardenas, Santiago

    2011-01-01

    .... Utilizando un modelo VEC y mediante el analisis de las funciones impulso respuesta y de descomposicion de varianza, se concluye que aumentar el grado de desarrollo estructural de la economia es...

  14. La Inteligencia Economica como Herramienta para la Competitividad.

    OpenAIRE

    Carmen Rodríguez Acosta; Nidia Sánchez Puigbert; Aylyn Barrios Santana

    2005-01-01

    El concepto de competitividad se encuentra muy bien identificado en los procesos de modernización, reconversión o ajuste que se realiza en nuestras entidades económicas. Existen diferentes factores o instrumentos que permiten la materialización de los mismos; entre ellos se destacan la Planificación Estratégica, la Gestión de la Calidad, la Gestión Tecnológica, la Inteligencia Competitiva y la Prospectiva. Con respecto a estos dos últimos aspectos, debemos destacar que el éxito de la gesti...

  15. Valoracion economica del ruido: una revision analitica de estudios

    National Research Council Canada - National Science Library

    Correa Restrepo, Francisco; Osorio Munera, Juan David; Patino Valencia, Bernardo

    2011-01-01

    ...: trafico de carreteras, de trenes y aeronaves. Finalmente, el estudio concluye que, a la luz de los diversos estudios analizados, los impactos mas relevantes del ruido son la incidencia negativa sobre el precio viviendas...

  16. Il teatro come bene relazionale: un contributo dalla scienza economica

    Directory of Open Access Journals (Sweden)

    Alessandra Todesco

    2016-07-01

    Full Text Available The difference between theatre and other art forms is revealed by one basic aspect: Theatre arises from an unreproducible relationship between individuals. The fundamental qualities of the theatrical experience – physicality and the copresence of others – reveal some important aspects of theatre, making it an interesting object of any economic analysis considering this art form as a relational good. From this perspective, theatrical events seem to be a cultural phenomenon that can't be thought merely as a “public service”, but instead as a desirable resource which benefits society. Studied as a relational good, the theatrical experience brings a richness to human relationships and has a significant influence on human happiness, quality of life and global growth without neglecting the importance of the wellbeing of the individual in realising the wellbeing of society as a whole.

  17. Levetiracetam: review clinica ed economica di un nuovo antiepilettico

    Directory of Open Access Journals (Sweden)

    Orietta Zaniolo

    2004-06-01

    Full Text Available Uncontrolled epilepsy has a significant negative impact on patient’s quality of life, on his emotional well-being and his social functioning. Seizure places an undue economic burden on the patient and community. The increased costs are direct and indirect (e.g.,inpatient care and loss of earnings associated with time lost from work. Levetiracetam is a new antiepileptic drug used as adjuntive therapy in the treatment of refractory epilepsy. Its nonconventional mechanism of action is not completely understood, but preclinical studies suggest that its antiepileptic action.may depend on a reversible, saturable and stereoselective binding site in CNS membranes. In this paper, we review the main clinical and economic data available in the scientific literature. Levetiracetam has a favourable pharmacokinetic profile characterised by rapid and nearly complete absorption, very low potential for drug interactions and a prolonged pharmacodynamic effect that permits twice-daily dosing. Several placebo-controlled clinical trials have demonstrated that its efficacy has enabled many patients who were refractory to treatment with other antiepileptic drugs to achieve long-term seizure freedom; furthermore in levetiracetam trials the frequency of adverse events is low and withdrawal rates are comparable with those of placebo. A cost/effectiveness analysis compared direct medical costs of levetiracetam add-on therapy with maintenance of standard therapy alone within the UK National Health Service. A 1-year dose escalation decision model was set up in refractory patients who failed to respond to two or more other currently available therapies, with seizure freedom selected as the measure of effectiveness. Available pharmacoeconomic data show that the incremental cost of treating patients with levetiracetam is low when compared with the benefits of seizure freedom, at least in the UK. Furthermore, current studies suggest that this antiepileptic drug has a potential as first-line treatment for many types of epilepsy and in many different patient populations.

  18. Evaluacion del dolor musculoesqueletico en el anciano

    National Research Council Canada - National Science Library

    Arteaga, Carlos Ernesto; Santacruz, Juan Guillermo; Ramirez, Lizeth Jazmin

    2011-01-01

    Proposito: las afecciones musculoesqueleticas son causa frecuente de dolor y discapacidad en el anciano, el conocimiento de estas patologias se hace necesario dado que la presentacion de algunas de ellas son...

  19. La evaluacion cientifica y las revistas nacionales

    National Research Council Canada - National Science Library

    Laborde, Javier

    2009-01-01

    ... revistas de corriente principal exclusivamente las que estan indizadas en el Citation Index (CI) de la compania ISI (por sus siglas en ingles: Institute for Scientific Information) ahora parte del consorcio transnacional Thomson Reuters. El investigador o grupo de investigadores en cuestion, podria enviar su articulo a una de las escazas revistas lat...

  20. EVALUACION DEL IMPACTO AMBIENTAL EN OBRAS VIALES

    Directory of Open Access Journals (Sweden)

    Wilfredo Martínez D.

    2014-11-01

    Full Text Available El presente artículo es escrito, con el propósito de proporcionar elementos técnicos que contribuyan para orientar a los equipos de trabajo multidisciplinario, en valorar objetivamente los impactos ambientales provocados por la construcción de obras civiles y que suscitan el interés del dominio público y profesionales en la materia. Para ello hemos contado con la experiencia acumulada en instituciones gubernamentales y de índole privado y con nuestra experiencia profesional, en la construcción de obras civiles. El contenido del mismo, toma en cuenta varios criterios de especialistas en la materia y recursos disponibles; con ética y rigurosidad técnica. El objetivo de la evaluación de impactos ambientales, es predecir sobre la marcha y a futuro, estados alternativos de recursos y ambiente; convencidos que el cuido de la naturaleza puede convocar la voluntad de todas las partes y lograr trabajar armoniosamente, por la construcción de un futuro con desarrollo sostenible para nuestra nación y generaciones posteriores; satisfaciendo las necesidades del presente, sin poner en riesgo los recursos del futuro.

  1. SINTESIS Y EVALUACION DE TERPENOS BIOLOGICAMENTE ACTIVOS

    National Research Council Canada - National Science Library

    Miguel A GonzÁlez

    2014-01-01

    ... de terpenos de origen natural, los cuáles junto a sus precursores han sido estudiados biológicamente durante más de diez años fruto de la colaboración con la Universidad de Antioquia representada por la profesora Liliana Betancur Galvis. Así pues, es de nuestro interés destacar en esta comunicación o ponencia los resultados obtenidos fruto de la col...

  2. EVALUACION DEL IMPACTO AMBIENTAL EN OBRAS VIALES

    National Research Council Canada - National Science Library

    Wilfredo Martínez D

    2014-01-01

    El presente artículo es escrito, con el propósito de proporcionar elementos técnicos que contribuyan para orientar a los equipos de trabajo multidisciplinario, en valorar objetivamente los impactos ambientales provocados...

  3. Los efectos de los programas sociales en la salud de la población en condición de pobreza: Evidencias a partir de las evaluaciones de impacto del presupuesto por resultados a programas sociales en Perú

    Directory of Open Access Journals (Sweden)

    Denice Cavero-Arguedas

    Full Text Available RESUMEN Este artículo describe la experiencia en la gestión de evaluaciones de impacto del Ministerio de Economía y Finanzas (MEF como uno de los instrumentos del presupuesto por resultados, y documenta el diseño de las evaluaciones de impacto a tres programas sociales emblemáticos y los resultados obtenidos, haciendo énfasis en aquellos vinculados a la salud de su población objetivo. Estos son el Servicio de Acompañamiento a Familias (SAF del Programa Nacional Cuna Más, el Programa Nacional de Apoyo Directo a los Más Pobres JUNTOS y el Programa Nacional de Asistencia Solidaria Pensión 65. Los resultados muestran que el SAF generó mejoras en el desarrollo cognitivo y de lenguaje en los niños mas no en las prácticas de cuidado infantil de las madres, ni en el estado nutricional de los niños. JUNTOS logró incrementos en el gasto per cápita, gasto en alimentos, disminución de la severidad de pobreza y mejoras en el logro educativo. Sin embargo, no se encontraron resultados significativos en la mayoría de indicadores de salud prenatal ni estado nutricional infantil. Pensión 65 mejoró la salud emocional del adulto mayor (depresión, autovaloración, pero no se evidenció aumentos en el uso de servicios de salud por parte de los adultos mayores ni mejoras en su salud física. Se recomienda que dichos programas fortalezcan sus diseños y acciones de articulación con el Ministerio de Salud y entre diferentes niveles de Gobierno, cuando corresponda, a fin de mejorar la oferta y contenidos de las prácticas saludables y optimizar la prestación de los servicios de salud.

  4. Paolo Sylos Labini, 1920-2005

    Directory of Open Access Journals (Sweden)

    Alessandro Roncaglia

    2006-03-01

    Full Text Available L’articolo ripercorre la biografia intellettuale di Paolo Sylos Labini, grande economista con forti ideali morali e civili. Dopo aver ricordato la sua educazione (a Roma, a Harvard con Schumpeter e a Cambridge con Robertson, l’articolo illustra i suoi contributi in vari campi, dalla politica economica e l’economia applicata (incluso il primo modello econometrico dell’economia italiana alla storia del pensiero economico e all'analisi del progresso tecnico, dalle classi sociali (con la tesi sull'importanza delle classi medie al sottosviluppo, e soprattutto alla teoria dell’oligopolio, concepita come teoria generale delle forme di mercato basata sulla nozione di barriere all'entrata. Infine vengono brevemente ricordati la partecipazione attiva di Sylos Labini al dibattito politico e i suoi forti valori civili.

  5. Thermal evaluation by means of simulation of two houses with different materials in the city of La Paz, B.C.S.; Evaluacion termica mediante simulacion de dos casas con materiales diferentes en la ciudad de la Paz, B.C.S.

    Energy Technology Data Exchange (ETDEWEB)

    Resendiz Pacheco, Oscar; Morillon Galvez, David; Chavez M, Elizabeth; Poujol G, Federico; Flores I, Alfredo [Universidad Autonoma de Baja California Sur (Mexico)

    2009-01-15

    In this article the evaluation of two houses of social interest in the city of La Paz is presented, in terms of the thermal comfort that could be offered to their users with a minimum cost of energy by means of a simulation of their thermal behavior with the program TRNSYS. One of the houses is constructed in a large extent with adobe, for the walls and brick for the ceilings and the other is a typical construction of social interest built with conventional materials. The obtained results are presented, with which some recommendations that can be made tending to improve comfort and energy saving in houses of social interest. These recommendations consider the type of material as much as the geometry of the houses. [Spanish] En este articulo se presenta la evaluacion de dos casas de interes social para la ciudad de La Paz, en terminos del confort termico que pudieran ofrecer a sus usuarios con un gasto minimo de energia mediante una simulacion de su comportamiento termico con el programa TRNSYS. Una de las casas esta construida en su mayor parte con adobe, para las paredes y ladrillo para los techos y la otra es una construccion tipica de interes social construida de materiales convencionales. Se presentan los resultados obtenidos, con los que se pueden hacer algunas recomendaciones tendientes a mejorar confort y ahorro de energia en casas de interes social. Estas recomendaciones consideran tanto el tipo de material como la geometria de las casas.

  6. Evaluation and diagnosis of the cathodic protection of ducts in the left margin of the Tonala River of the Superintendencia General de Ductos Minatitlan; Evaluacion y diagnostico de la proteccion catodica en la margen izquierda del Rio Tonala de la Superintendencia General de Ductos Minatitlan

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez N, Miguel A; Malo T, Jose M; Munoz Ledo C, Ramon; Uruchurtu C, Jorge; Castrejon G, Rafael [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Sanchez G, Luis; Algarra M, Raul; Abreu L, Emilio [Gerencia de Mantenimiento, Pemex (Mexico)

    2003-07-01

    The present study contains the measurements obtained as a part of the evaluation of the protection system of ducts located in the left margin of the Tonal River, made by the Gerencia de Materiales y Procesos Quimicos of the Instituto de Investigaciones Electricas (IIE) during the last trimester of year 2001. Also, the measurements of potential in conditions of instantaneous ignition and extinguished in measuring posts of the duct in Rights of Way (DDV) Tonala-Nudo Teapa 23 are studied, in order to determine the real protection level reached by the cathodic protection system, the possible unprotected zones and the possible corrective measures that lead to a safe operation of the ducts. [Spanish] El presente estudio contiene las mediciones obtenidas como parte de la evaluacion del sistema de proteccion de los ductos ubicados en la margen izquierda del rio Tonala, realizadas por la Gerencia de Materiales y Procesos Quimicos del Instituto de Investigaciones Electricas (IIE) durante el ultimo trimestre del ano 2001. Asimismo, se tratan las mediciones de potencial en condiciones de encendido y apagado instantaneo en postes de medicion del ducto en los Derechos De Via (DDV) Tonala-Nudo Teapa 23, con el proposito de determinar el nivel real de proteccion alcanzado por el sistema de proteccion catodica, las posibles zonas desprotegidas y las posibles medidas correctivas que conduzcan a una operacion segura de los ductos.

  7. Revisión sistemática de evaluaciones económicas de fármacos antivirales para el tratamiento de la hepatitis B crónica Economic evaluation of antiviral treatment for chronic hepatitis B: a systematic review

    Directory of Open Access Journals (Sweden)

    Lely Solari

    2010-03-01

    Full Text Available Objetivo. Revisar la evidencia disponible acerca de la costo-efectividad de los regímenes antivirales en el tratamiento de la hepatitis B crónica. Material y Métodos. Se realizó una revisión sistemática de las bases de datos de MEDLINE, LILACS, NICE guidelines y COCHRANE sobre evaluaciones económicas de regímenes antivirales para el tratamiento de hepatitis B crónica. Se incluyó los estudios originales, revisiones sistemáticas y guías de manejo conteniendo información acerca de la costo-efectividad de dicho tratamiento. Se registró las características y resultados de los documentos obtenidos. Resultados. Se obtuvo 29 artículos originales, cuatro artículos de revisión y cuatro guías de manejo clínico. La mayoría de las publicaciones fueron hechas en los cinco últimos años. Los autores tenían conflicto de interés, por trabajar en la industria farmacéutica, en 73% de los artículos originales. El 93% de los artículos que evalúan costo-efectividad de brindar tratamiento para hepatitis B crónica frente a manejo de complicaciones, encuentran que es costo-efectivo el tratamiento antiviral; 3/6 estudios que evalúan lamivudina frente a otros esquemas la encuentran como estrategia dominante, 3/5 encuentran a entecavir como estrategia dominante, 1/1 a tenofovir como dominante, 1/4 a interferón convencional como dominante y ninguno encuentra a adefovir ni interferón pegilado como estrategia dominante. Conclusiones. Consideramos que la evidencia disponible sugiere que brindar tratamiento antiviral para hepatitis B crónica sea una intervención costo-efectiva para muchos sistemas de salud, incluyendo el nuestro, con índices variables de costo-efectividad de acuerdo con los esquemas evaluados. Idealmente, se debe realizar evaluaciones económicas locales en este aspecto.Objective. To revise the available evidence on the cost-effectiveness of antiviral regimens for treatment of chronic hepatitis B. Material and methods. We

  8. Pest management in Albania: un esempio di coopartecipazione allo sviluppo tecnico-scientifico in Salute Pubblica

    Directory of Open Access Journals (Sweden)

    Guglielmo Pampiglione

    2010-03-01

    Full Text Available Nel settembre 2007 veniva segnalata un’intensa infestazione di blatte (Blatella germanica nei locali dell’Ospedale Regionale di Scutari. Tali locali risultavano colonizzati dalle blatte nonostante i regolari trattamenti anti-infestanti eseguiti dal personale sanitario locale preposto. Questa situazione di forte insuccesso dei trattamenti richiedeva necessariamente una valutazione più attenta al problema. Si sono inoltre create le premesse per un’analisi più completa del comparto del Pest Management in Albania.

  9. Breve historicidad y encuadre tecnico-juridico para el ejercicio de la direccion gubernativa

    National Research Council Canada - National Science Library

    Bolanos Garita, Rolando

    2012-01-01

    .... En el caso de Costa Rica, aun existiendo todo un marco referencial de naturaleza teorica, juridica, tecnica y, si se quiere, socio-historica, el ejercicio de la direccion gubernativa no termina...

  10. El Lexico Tecnico Espanol E Ingles: Linguistica y Humanismo (Spanish/English Lexicon: Linguistics and Humanism).

    Science.gov (United States)

    Vivanco, Veronica

    This manual, written in Spanish, contains a linguistic study to show that all sciences, whether economic or social, technical or humanistic in nature have a direct impact on our terminology. Starting with general linguistic considerations on technical terms in both English and Spanish, the study advances to semantics used in symbolic language. It…

  11. Study of Some Technical Problems in Nuclear Emulsions; Estudio de algunos problemas tecnicos en emulsiones fotonucleares

    Energy Technology Data Exchange (ETDEWEB)

    Tarrega Tornero, M. P.

    1967-07-01

    A methodological study of various technical aspects of photographic emulsions is presented. This study enables the emulsion method to be used in certain physical problems, and can be summarized under the following headings. 1) Variation of different ionization indices with the degree of development. A measure of the degree of development is introduced. This measure called the {alpha} -mark, is based on the average width of tracks due to {alpha}-particles. Using the {alpha}-mack the influence of several factors such as the duration, temperature and concentration of the developing liquid are investigated. A comparative study of the sensitivity of llford C{sub 2} and K{sub 2} emulsions is given. (Author) 9 refs.

  12. COMPARACION TECNICO-FINANCIERA DEL ACERO ESTRUCTURAL Y EL HORMIGON ARMADO

    Directory of Open Access Journals (Sweden)

    MIGUEL DAVID ROJAS LOPEZ

    2008-01-01

    Full Text Available Este trabajo presenta un análisis comparativo de las propiedades operativas, estéticas, mecánicas, económicas y financieras de los sistemas constructivos en acero estructural y hormigón armado, con el fin de establecer criterios de escogencia para la construcción en Colombia.

  13. Estudo tecnico e economico da manutenção de um pavimento de concreto

    OpenAIRE

    Gustavo Garnett Neto

    2001-01-01

    Resumo: Pavimentos Rígidos de Concreto de Cimento Portland são utilizados, em geral, como revestimentos de vias com tráfego muito intenso e para as quais se pretende uma longa vida útil e nenhuma necessidade de manutenção. Estes pavimentos, quando bem projetados e bem construídos, geralmente atendem a essas expectativas. Porém, na construção de pavimentos de grande extensão, podem ocorrer defeitos em algumas de suas placas, que, posteriormente, demandarão reparos corretivos, para a preservaçã...

  14. Annual Research Technical Report 2002; Informe Tecnico de Investigacion Anual del 2002

    Energy Technology Data Exchange (ETDEWEB)

    Alonso V, G. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-09-15

    To study the principles of reactors design of Light Water of IV generation, to look for collaborations to participate in the development of some of them and to generate computational tools that allow us the appropriate analysis of these reactors. (Author)

  15. Annual Research Technical Report 2004; Informe Tecnico de Investigacion Anual del 2004

    Energy Technology Data Exchange (ETDEWEB)

    Alonso V, G.; Viais J, J.; Mendoza G, G.; Ramirez S, J. R.; Castillo M, J. A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-09-15

    In this work it plans to be carried out the Probabilistic Safety Analysis level 1 for the Modified Design of the IRIS Reactor. To generate computational tools of calculation of the analysis of the reactors of IV Generation and to optimize the use of nuclear fuel. To elaborate the economic analysis of the IRIS Reactor. (Author)

  16. Annual Research Technical Report 2003; Informe Tecnico de Investigacion Anual del 2003

    Energy Technology Data Exchange (ETDEWEB)

    Alonso V, G.; Viais J, J.; Mendoza G, G.; Ramirez S, J.R.; Castillo M, J.A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-09-15

    This report has among its objectives to carry out the Probabilistic Safety Analysis Level 1 for the IRIS inside the project of development of reactors of IV Generation. To generate computational calculation tools for the analysis of the reactors of IV Generation. To generate computational tools to optimize the use of the nuclear fuel. (Author)

  17. La Preparacion Fisica en el entrenamiento tecnico-tactico del Baloncesto

    OpenAIRE

    Francisco Freyre Vázquez; Alexis Fernández Peña

    2009-01-01

    Se adaptó e introdujo todos los conceptos relacionados con la preparación física en el proceso general del entrenamiento de un equipo de baloncesto. Las propias características del juego, su complejidad en cuanto a las variables que influyen en el resultado, hizo necesario un planteamiento integrado del entrenamiento donde los ejercicios utilizados tuvieron un carácter complejo y afectando a todos los sistemas implicados en el entrenamiento (físico, técnico, táctico,¿), es decir, se expuso có...

  18. Centralized spent fuel storage. Technical aspects; Almacen temporal centralizado. Aspectos tecnicos

    Energy Technology Data Exchange (ETDEWEB)

    Gago, J. A.; Martinez, J. E.; Rivera, M. I.

    2006-07-01

    The first stage in the Spanish centralized interim spent fuel and high level radioactive waste storage facility (ATC) project has resulted in the development of a generic design of the facility. The intention has been to demonstrate the feasibility and adequacy of the project for the purposes pursued and to determine the main component features that optimize the whole installation. the selection of the specific site will be the starting point for the development of the detailed project of the overall facility. (Author)

  19. Computed Tomography. Evolution, technical principles and applications; Tomografia computarizada. Evolucion, principios tecnicos y aplicaciones

    Energy Technology Data Exchange (ETDEWEB)

    Calzado, A.; Geleijns, J.

    2010-07-01

    Computed tomography has become one of the most commonly used diagnostic techniques. Since its clinical introduction in 1971, subsequent developments have led to the emergence of new indications in different medical specialties. This paper reviews the evolution of art; essential characteristics of CT scanners are described and different application modalities in diagnosis are reviewed as well. (Author).

  20. A educação da sociedade tecnico-digitalizada

    Directory of Open Access Journals (Sweden)

    Bantu Mendonça Katchipwi Sayla

    2011-01-01

    Full Text Available Facing the Paulo Freire, in his work "Pedagogy of the Oppressed" and crisis involving the educational process in contemporary societies characterized by economic globalization and cultural as well as by violence, crime and poverty, fruit growing electronic media and new fascinating technical objects, opens up the advent of a complex mode of living, re-distribute and interact with everyday people. In the globalized world are built through various meanings of the symbolic forms of language that not infrequently erode the social fabric, presenting a new configuration of oppression imposed by the owners of private media and public that spread with ever more sophisticated capitalist ideology which excludes the poor for being poor. So, to Paulo Freire, the oppression is exercised to the extent that it absorbs the fear of freedom, arising from hosting an oppressive conscience. How to swim against the tide capitalist? Who is responsible for the violence in the global village? How to solve it? These are questions this article tries to answer through a literature search. The historical practices of resistance and opposition are present among the various social movements who believe still be possible to build a more human and compassionate. In the case of the teaching and learning, the method of Liberating Pedagogy of Paulo Freire who considers education as a process of awareness and proposing alternatives to the practices of social exclusion and therefore it is critical consciousness as a political act. And the training of teachers have a crucial role in this endeavor.

  1. Evaluation of criteria of environmental fitness for popular houses of the low income sector to arid regions in Mexicali, Baja California; Evaluacion de criterios de adecuacion ambiental para la vivienda popular de sectores de bajos ingresos al clima calido extremo de Mexicali, B.C.

    Energy Technology Data Exchange (ETDEWEB)

    Corral Martinez, Maria [Universidad Autonoma de Baja California, Mexicali, Baja California (Mexico)

    2000-07-01

    The main purpose of this work is to present the impact on minimizing thermal loads, the traditional bioclimatic criteria commonly utilized on low income housing types in Mexicali, B.C., Mexico by showing the results of dynamic thermal evaluation based in the DOE 2.1e software as well as its technical description, with the purpose of providing recommendations for low income popular houses on arid regions, due to the high reduction percentages that can be obtained during summertime. Therefore, having the data obtained from the field as a starting point, the thermal problematic in popular housing is detected. A properties is chosen from a representative range of government supported housing types named progressive housing which are offered an financially available to the large low income popular sector in order to determine the thermal environmental function using the DOE 2.1e software and a gnomon analysis. To conclude evaluations showed that by integrating and applying traditional thermal and environmental strategies that are commonly used in this region, it is possible to reduce as much 50% of the annual cooling internal load, enhancing thermal comfort conditions in natural bioclimatic way. [Spanish] El objetivo de este trabajo es mostrar el impacto en la reduccion de la carga interna de enfriamiento, de los criterios de adecuacion ambiental que tradicionalmente se aplican en la vivienda de Mexicali, B.C., Mexico presentando los resultados de una evaluacion termica en estado dinamico con el programa DOE 2.1e y la descripcion tecnica de las mismas, con el proposito de hacer recomendaciones para la vivienda popular de bajos ingresos en zonas aridas. Para ello a partir de informacion de campo se detecta la existencia de problema termico en la vivienda popular. Se revisa un prototipo representativo de los programas oficiales de vivienda ofrecido a los sectores populares denominado vivienda progresiva, a fin de establecer el grado de adecuacion termico ambiental con el

  2. Los estudios de síntesis como base para las evaluaciones económicas: necesidad de la valoración de su calidad Synthesis studies as the basis for economic evaluations in health: the need for their quality appraisal

    Directory of Open Access Journals (Sweden)

    Rafael Bolaños-Díaz

    2011-09-01

    Full Text Available Los estudios de síntesis (EDS: revisiones sistemáticas y metanálisis, son base para llevar a cabo las evaluaciones económicas en salud (EES. Los EDS, al permitir obtener parámetros para las probabilidades de estimación y de efectividad a partir de la combinación de resultados de estudios primarios y, al incluir en su metodología procesos de selección, evaluación, sistematización y síntesis, son considerados como el primer nivel de jerarquía en la evidencia científica. No obstante, pueden estar sometidos a sesgos y fallas metodológicas que afectan su validez. El presente artículo expone, inicialmente, la importancia de la aleatorización en la jerarquización de los diseños de investigación; luego se revisa los principales factores que afectan la validez de los EDS, incidiendo en el sesgo de publicación, la heterogeneidad y la inclusión de estudios primarios con objetivos principales distintos al del EDS; asimismo, se presenta a los estudios individuales como una alternativa válida para el desarrollo de una EES. Se concluye que uno de los aspectos claves en una EES es la selección adecuada de los tipos de estudio, sean estos primarios o secundarios.Synthesis studies (SS: systematic review and meta-analysis are the basis for developing Health Economic Evaluations (HEE. SS allow us to obtain parameters for estimating probabilities and effectiveness from the combination of the results of primary studies, and, as they include in their methodology the selection, evaluation, systematization and synthesis processes, they are considered the first level of hierarchy in scientific evidence. Nevertheless, they can be prone to bias and methodological failures that can affect the validity of their results. This article initially presents the relevance of the randomization in the hierarchic classification of research designs, then it reviews the main factors affecting the validity of the SS, emphasising the publication bias, the

  3. Long term vision on the use of the renewable energies in Mexico: Solar energy. First Part: Evaluation of the Solar Resource in Mexico (Annexe 6-I in 'A vision of year 2030 on the use of the renewable energies in Mexico'); Vision a largo plazo sobre la utilizacion de las energias renovables en Mexico: Energia solar. Primera Parte: Evaluacion del Recurso Solar en Mexico (Anexo 6-I en 'Una vision al 2030 de la utilizacion de las energias renovables en Mexico')

    Energy Technology Data Exchange (ETDEWEB)

    Estrada Gasca, Claudio A; Arancibia Bulnes, Camilo A; Dorantes Rodriguez, Ruben; Islas Samperio, Jorge; Muhlia Velasquez, Agustin [Universidad Nacional Autonoma de Mexico (Mexico)

    2005-08-15

    The application of the solar energy requires an evaluation of the solar resource. It is understood by evaluation the determination of the amount of solar energy available to be used in an application; from the point of view of the present applications it is advisable to distinguish two: the direct solar radiation and the diffuse solar radiation, that conform what it is known as the global solar radiation, or hemispheric. All the solar collectors have capacity to use the direct radiation, their capacity to use diffuse radiation depends on the concentration factor of the radiation that characterizes them. Another distinction that can be done is the measurement of different parts from the spectrum. It is not simple to predict the value of the solar radiation in a site or given moment, this has implications in the design of solar facilities, which are constructed to operate during a large number of years. [Spanish] La aplicacion de la energia solar requiere una evaluacion del recurso solar. Se entiende por evaluacion a la determinacion de la cantidad de energia solar disponible para ser utilizada en una aplicacion; desde el punto de vista de las aplicaciones actuales conviene distinguir dos: la radiacion solar directa y la radiacion solar difusa, que conforman lo que se conoce como la radiacion solar global, o hemisferica. Todos los colectores solares tienen capacidad de utilizar la radiacion directa, su capacidad de usar radiacion difusa depende del factor de concentracion de la radiacion que los caracteriza. Otra distincion que se puede hacer es la medicion de diferentes partes del espectro. No es sencillo predecir el valor de la radiacion solar en un sitio o momento dado, esto tiene implicaciones en el diseno de instalaciones solares, las cuales se construyen para operar durante un numero grande de anos.

  4. Using Assessments for Instructional Improvement: A Literature Review El uso de evaluaciones para la mejora de la enseñanza: Una revisión bibliográfica O Uso de Avaliações para o Aperfeiçoamento do Ensino: Uma Revisão da Literatura

    Directory of Open Access Journals (Sweden)

    Viki M. Young

    2010-08-01

    evaluación. Identificamos oportunidades para investigaciones relevantes que pueden aclarar cómo y bajo qué condiciones los maestros y las escuelas pueden utilizar  datos  de las evaluaciones para mejorar la enseñanza.
    Os discursos recentes sobre a reforma da políticas educativas pressupõem um papel central dos "dados" na melhoria do ensino. No entanto, a forma como os "dados" podem ajudar a melhorar o ensino também depende de outros fatores, como as práticas de avaliação dos professores, quais dados são relevantes e úteis para eles, que os dados sejam geralmente acessíveis, e conhecimento, conteúdo e pedagogia dos professores. Além disso, considerando os contextos de trabalho dos professores é claro que a liderança nas escolas, o apoio à utilização de dados institucionais, as estratégias de formação e as normas de aprendizagem e colaboração para os adultos limitam as oportunidades de analisar dados relevantes e melhorar as práticas docentes. Esta revisão da literatura investiga características e práticas educacionais e organizacionais relacionadas com usos formativos da avaliação. Identificamos oportunidades para pesquisas relevantes que podem esclarecer como e em que condições os professores e as escolas podem utilizar os dados da avaliação para melhorar o ensino.

  5. LA EVALUACION EN LA ESCUELA: UNA AYUDA PARA SEGUIR APRENDIENDO

    Directory of Open Access Journals (Sweden)

    Aurora LaCueva

    1997-01-01

    Full Text Available EI trabajo llama la atención sobre algunos de los principales problemas que puede presentar la práctica de la evaluación en la escuela: el énfasis en los aprendizajes más superficiales y de menor nivel, la ilusión totalizante, el imposible diagnóstico como paso previo a toda enseñanza, el esencialismo, el error tomado como anormalidad, el papel etiquetador de la nota, la instrumentalización engañosa, el crecimiento desmesurado de la acción evaluadora como juicio y sentencia. Frente a estas peligrosas deformaciones, se propone una evaluación como ayuda para seguir aprendiendo, incorporada a la actividad normal de una escuela rica en experiencias formativas. Una evaluación abierta y flexible, realizada a partir de los procesos y productos cotidianos en el aula de clases. Tablas y gráficos pueden sustituir con provecho a las calificaciones. Las fichas de registro, el portafolio, el seguimiento atento del docente, son mecanismos para ir acompañando y sosteniendo el aprendizaje infantil. La autoevaluación y la coevaluación resultan parte importante del proceso. La evaluación debe estar complementada con medidas de apoyo, dirigidas a facilitar a los aprendices la superación de sus insuficienciasThe paper calls attention to some of the main problems that may be present in the evaluation of school learning: the emphasis in low level and superficial leaming, the totalizing illusion, the impossible diagnostic as previous step to all teaching, the essentialism, the consideration of mistakes as anomalies, the labeling rol of grades, the mystifying instrumentalization, the disproportionate growth of the evaluation function as judgement and sentence. Against theses dangerous deformations, it is proposed an evaluation as help for increasing learning, incorporated into the regular activities of a school setting rich in formative experiences. This means an open and flexible evaluation, based on the appreciation of daily classroom processes and products. ln this context, grades may be profitely substituted by charts and graphs. Register cards, portfolios, the teacher's careful follow-up, are mechanisms for the accompanyment and support of students' learning. Self-evaluation and co-evaluation are important parts of the evaluative process. Evaluation must be complemented by aid measures, aimed at helping children overcome their learning insufficiencies.

  6. SISTEMAS DE EVALUACION DE CONTENIDOS EN TELEFORMACION: EL PROYECTO CFV

    Directory of Open Access Journals (Sweden)

    Rosa Maria Bo

    1999-08-01

    Full Text Available La evaluación del rendimiento de los alumnos en los sistemas basados en teleformación es uno de los temas claves como en cualquier programa de formación. Este proceso presenta las características básicas comunes con los restantes programas de formación y añade las propias de este acercamiento. Vamos a revisar algunas de las mismas, situándolas dentro de la experiencia y alternativas que actualmente están disponibles y, particularmente, desde la perspectiva que a este respecto se desarrolla en el proyecto CFV

  7. Evaluacion de las leyes: lecciones de la criminologia

    National Research Council Canada - National Science Library

    Rubio, Mauricio

    2008-01-01

    .... De la criminologia, una disciplina auxiliar del derecho penal, se pueden obtener valiosas lecciones practicas, teoricas y normativas, por ejemplo, en su manera de abordar el tema de la recoleccion de informacion...

  8. Evaluacion del desempeno atencional en ninos: eficacia, eficiencia y rendimiento

    National Research Council Canada - National Science Library

    Monteoliva, Juan Manuel; Ison, Mirta Susana; Pattini, Andrea Elvira

    2014-01-01

    ...: eficiencia atencional y rendimiento atencional. Esta prueba es utilizada para evaluar la atencion focalizada y sostenida y la aptitud para percibir, rapida y correctamente, semejanzas, diferencias...

  9. EVALUACION DEL ZUMO DE AGUAYMANTO (Physialis Peruviana) SECADO POR ATOMIZACION

    OpenAIRE

    Paredes Nureña, Adderly Jhonatan; Universidad Nacional del Santa; Castillo Martinez, Williams; Universidad Nacional del Santa

    2015-01-01

    El interés en el cultivo de aguaymanto está aumentando fuertemente en los tiempos actuales. Esto a su alto contenido en vitamina C (43 mg/100gr), provitamina A (3 000 U.I. de caroteno por 100 g), vitaminas del complejo B (tiamina, niacina y vitamina B12), el contenido de proteína y fósforo son excepcionalmente altos. Sin embargo se requiere de la aplicación de procesos tecnológicos que permitan contar con estos aportes nutricionales en cualquier temporada de año y no estar a espera de tempora...

  10. Evaluacion continua en la UNED ¿Una mision posible?

    Directory of Open Access Journals (Sweden)

    Sanz Carnero, Basilio

    2008-01-01

    Full Text Available En este curso 2007-2008 se ha publicado en la UNED la II convocatoria de redes de innovación docente, en cuyo marco estamos realizando una humilde experiencia, que trata de explorar las posibilidades actuales de llevar a cabo, en una de nuestras asignaturas de matemáticas (Licenciatura de economía una especie de evaluación continua mixta: on-line y presencial, la comunicación, trata de narrar el desarrollo de esta experiencia y extraer una serie de conclusiones sobre la posibilidad de llevarla a cabo por nuestra universidad en el curso 20010-2011 dependiendo de los medios humanos y materiales puestos a su servicio.

  11. Evaluacion entre colegas profesores (Peer Review of Teachers). ERIC Digest.

    Science.gov (United States)

    Hertling, Elizabeth

    This digest in Spanish examines peer review, focusing on how these types of reviews can improve teacher competence. Peer review is often linked to peer assistance, which helps new and veteran teachers improve their knowledge and skills. In peer-review programs, consulting teachers conduct formal evaluations and recommend whether the participating…

  12. Calidad de las evaluaciones en diferentes niveles educativos

    OpenAIRE

    Buendía Eisman, Leonor

    2015-01-01

    APORTACIONES:Hacia una universidad de calidad. Leonor Buendía EismanUn modelo reflexivo de gestión de la calidad en centros docentes no universitarios.L. Buendía Eisman, B. García Lupión, D. González González, E. Hidalgo Díez y R.López FuentesLa evaluación de programas de formación: tipos de planes y algunas cuestionesmetodológicas. J.M. Jornet, Mª J. Perales, J.M Suárez, Mª A. Pérez Ca...

  13. Metodologias para la Evaluacion de Activos Intangibles (pt. I

    Directory of Open Access Journals (Sweden)

    Dr. Miguel A. Palomo Gonzalez

    2005-07-01

    Full Text Available El valor de mercado de una empresa está determinado por los activos físicos y sus activos intangibles. Su expresión en el balance general permite que las empresas inicien un proceso de identificación de los activos intangibles y su cuantificación, para continuar con la administración del valor generado y su incremento en períodos futuros. La evaluación de los activos intangibles es una práctica administrativa del área de Administración de Tecnología que integra los conceptos de ingeniería financiera y de tecnología. En este artículo se presentan las diferentes metodologías de evaluación de los Activos Intangibles, con el fín de identificar el Modelo y su alcance ántes de su implantación.

  14. Evaluacion de proyectos de servicio social en una universidad mexicana

    National Research Council Canada - National Science Library

    Navarrete-Ramirez, Ana Maria; Barrera-Bustillos, Maria Elena; Martin-Pavon, Mario J

    2010-01-01

    El objetivo del estudio era determinar la calidad de los proyectos de servicio social en que participan estudiantes de la Universidad Autonoma de Yucatan, considerando la opinion de los prestadores...

  15. LA EVALUACION DE LA PENALIZACIÓN AL DELINCUENTE

    Directory of Open Access Journals (Sweden)

    Diego Becerril Ruiz

    2014-12-01

    Full Text Available The social perception of the penalization of the crimes is a key to understanding the social dynamics and its relation to criminal proceedings element. It is used as a justification for criminal expansionist policy, always founded on worry or alarm. The paper analyzes the evolution of the sufficiency of punishment during the last 35 years (1980-2014 and the assignment of responsibilities. Next to the description and evolution has built a favorable profile people toughen punishment. The data source are secondary, surveys conducted by the Centre for Sociological Research (CIS, the Eurobarometer and the European Social Survey. The scope is national. The main conclusions are that the evaluation of justice as benevolent and fondness for harsher punishments draw a trend of steady increase, unless exceptional falls. This attitude is more pronounced among people with lower level of education, women, elderly, ideologically right, lower income and Catholics. The responsibility of insufficient punishment is mainly ascribed to the entire system, except the police, although the structural elements (judicial organization laws more than functional (judges, prosecutors.

  16. Evaluacion del factor central y periferico en fatiga muscular

    Directory of Open Access Journals (Sweden)

    Marcela E. Panizza

    1983-09-01

    Full Text Available Se estúdio la fatiga muscular en 13 sujetos normales; para ello, fueron sometidos a un esfuerzo sostenido durante 10 minutos previo y posterior, al cual se realizo la medición de la onda M máxima. Durante el esfuerzo y cada 2 minutos, se obtuvieron cuantificaciones de la frecuencia y duración de las ondas positivas y negativas del EMG. Los resultados, mostraron diferencias significativas de estos valores, en función del tiempo de esfuerzo realizado, mientras que las mediciones de la onda M máxima inicial y final, no fueron diferentes, todo lo cual lleva a jerarquizar el factor central como el más importante en el desarrollo de fatiga, bajo nuestras condiciones de estudio, que son además de sencilla aplicación clínica.

  17. Evaluacion del factor central y periferico en fatiga muscular

    OpenAIRE

    Marcela E. Panizza; L. G. Cohen; Olga P. Sanz; R. Rey; C. Schutz

    1983-01-01

    Se estúdio la fatiga muscular en 13 sujetos normales; para ello, fueron sometidos a un esfuerzo sostenido durante 10 minutos previo y posterior, al cual se realizo la medición de la onda M máxima. Durante el esfuerzo y cada 2 minutos, se obtuvieron cuantificaciones de la frecuencia y duración de las ondas positivas y negativas del EMG. Los resultados, mostraron diferencias significativas de estos valores, en función del tiempo de esfuerzo realizado, mientras que las mediciones de la onda M má...

  18. Convergencia metodologica de los disenos de evaluacion de programas

    National Research Council Canada - National Science Library

    Chacon-Moscoso, Salvador; Anguera, Teresa M; Sanduvete-Chaves, Susana; Sanchez-Martin, Milagrosa

    2014-01-01

    ... cuasi-experimentales. Esto dificulta la practica de quienes evaluan y planifican los programas a nivel empirico, un area donde la distincion entre tipos de estudio esta en cambio constante y es menos clara. Metodo...

  19. TRATAMIENTO MEDICO DEL EMBARAZO ECTOPICO: EVALUACION PROSPECTIVA DE LA FERTILIDAD

    OpenAIRE

    Troncoso J,José Luis; Devoto C,Luigi; Santamaría M.,Rodrigo; Fuentes G.,Ariel

    2002-01-01

    Se presenta la evaluación reproductiva, a través del método de las tablas de vida, aplicado a una cohorte de 16 pacientes tratadas con metotrexato parenteral por embarazo ectópico, en el período comprendido entre julio de 1993 y julio de 2002. Estudio realizado en el Instituto de Investigaciones Materno-Infatil, Universidad de Chile y Servicio de Ginecología. Hospital San Borja-Arriarán e Integramédica, división Ginecología. Todas las pacientes negativizaron la gonadotrofina coriónica. La per...

  20. Evaluacion de la fermentacion del lactosuero acido utilizando Lactobacillus casei

    National Research Council Canada - National Science Library

    Cury Regino, Katia; Arteaga Marquez, Margarita; Martinez Florez, Guillermo; Lujan Rhenals, Deivis; Durango Villadiego, Alba

    2014-01-01

    El lactosuero acidificado espontaneamente pone en riesgo la salud del consumidor al utilizarlo como acidificante de la leche usada en la elaboracion del queso tipo mozzarella, y ademas reduce la calidad del producto...

  1. Uso de los biomarcadores en la evaluacion de la contaminacion

    National Research Council Canada - National Science Library

    Toro-Restrepo, B

    2011-01-01

    .... Un biomarcador es una respuesta funcional, fisiologica o bioquimica al nivel celular o interacciones moleculares que un organismo, una poblacion o una comunidad refleja frente a un peligro potencial...

  2. Discriminacion economica de genero en los egresados de administracion y finanzas de Los Mochis, Sinaloa

    Directory of Open Access Journals (Sweden)

    Guerra, E, J.G. Vargas

    2009-01-01

    Full Text Available In this documents is described the gender discrimination of the administration gradutes, 1999-2003 generation from Universidad de Occidente (U de O in Los Mochis. In general terms the average of incomes has no difference on the gender, mainly due to the high standard deviation of individual incomes. The income differences can not be explained neither by the family dimension such as marital status, nor the number of children, nor the working condition, nor the educational degree for the parents or spouse; nor by the educational dimension, but by the occupational dimension. Gender discrimination is due to the labour market’s segmentation that is, there are jobs destined to a single gender. The exclusive jobs for female administrator are in the category of under employment; whereas those for males have higher average of income.

  3. Economical optimization in geothermal projects: filling material; Optimizacion economica en una instalacion goetermica: Material de relleno

    Energy Technology Data Exchange (ETDEWEB)

    Isabel, J. A. de

    2009-07-01

    In shallow geothermal energy applications, the filling material through the borehole is considered as a main feature in every geothermal project. The use of an adequate filling material decrease the necessary number of linear meters for a correct geothermical exchange, dropping the play back period of the installation as well. The use of this kind of material in the field of single-family houses means a direct benefit of the owner, as the installation will increase its seasonal performance factor, droping the electrical consumption. Likewise in big geothermal project the optimization of the installation can only be achieved with the use of a proper geothermal filling material. (Author) 4 refs.

  4. A teoria de Posner e sua aplicabilidade a ordem constitucional economica brasileira de 1988

    OpenAIRE

    Gonçalves, Everton das Neves

    1997-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Juridicas A obra intenta incursão na temática da Teoria Econômica identificando seus principais institutos determinantes das Leis de demanda, de oferta e de eficiência econônomica como instrumental teórico-analítico para o Direito. Assim, se descortinam os diversos enfoques dados ao Direito pelo Econômico bem como as raízes economicistas da nova teoria, seus precursores teóricos, abordando-se, ainda, com es...

  5. Joan Robinson e la teoria economica. (Joan Robinson and economic theory

    Directory of Open Access Journals (Sweden)

    A. ASIMAKOPULOS

    2013-12-01

    Full Text Available L'interesse di Joan Robinson nel problema della distribuzione del reddito e il suo disprezzo per quello che considera le teorie che hanno cercato di giustificare le distribuzioni esistenti di reddito mai segnalati . Il suo lavoro è caratterizzato da una forte inclinazione per chiari  argomenti ben ragionati che non lasciavano spazio per  sciatte abitudini  di pensiero . La portata ampia e la quantità di scritti di Robinson rendono difficile presentare una valutazione critica dei suoi contributi nel contesto anche di un documento lungo . Quella attuale si concentra sui suoi scritti in cinque aree principali : (i l'economia della concorrenza imperfetta ; ( ii la teoria del rapporto di lavoro ; ( iii la teoria di accumulazione nel lungo periodo ; ( iv il concetto di capitale e la funzione di produzione ; e ( v il problema del tempo in economia che si riflette nei suoi scritti sulla storia tema contro equilibrio .Joan Robinson’s interest in the question of the distribution of income and her disdain for what she considered to be theories that tried to justify existing distributions of income never flagged. Her work is marked by a strong inclination for clear, well reasoned arguments that left no room for sloppy habits of thought. The wide scope and quantity of Robinson’s writings make it difficult to present a critical evaluation of her contributions within the context of even a lengthy paper. The present one concentrates on her writings in five main areas: (i the economics of imperfect competition; (ii the theory of employment; (iii the theory of accumulation in the long run; (iv the concept of capital and the production function; and (v the problem of time in economics as reflected in her writings on the theme history versus equilibrium. JEL: B31, E24

  6. Propuesta de un modelo integral de competitividad economica para las empresas del municipio de Nuevo Laredo

    Directory of Open Access Journals (Sweden)

    Hernandez F.

    2005-01-01

    Full Text Available Esta investigación está orientada a la solución del problema de lograr el crecimiento,la competitividad y la internacionalización de las empresas locales mediante el aprovechamiento efectivo de la propuesta del Modelo Integral de Competitividad Económica (MICE, en las Empresas y Organizaciones del Municipio de Nuevo Laredo.

  7. Fuel vegetable oils under some economic considerations; Oleos vegetais combustiveis sob algumas consideracoes economicas

    Energy Technology Data Exchange (ETDEWEB)

    Mourad, Anna Lucia [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Dept. de Energia]|[Instituto de Tecnologia de Alimentos (ITAL), Campinas, SP (Brazil)). Centro de Tecnologia de Embalagem]. E-mail: anna@ital.sp.gov.br

    2006-07-01

    The introduction of bio diesel in the Brazilian energy matrix has been mainly motivated by the governmental actions, which foresees social and economical development to the country in a program that allows the use of different oil seed crops as raw materials for bio fuel production. Cost estimates considering the average price received by the farmer and the oil content of each vegetable shows that the minimum cost of bio fuel was about 1.1(castor bean); 1.8(peanut); 2.0(soy beans); 3.3(corn) higher than the average cost of fossil diesel from 1975 to 2004. Among the evaluated raw materials, only the palm oil had inferior cost compared to the petroleum diesel (0.6%). The oleaginous plants that have a higher oil content and smaller agricultural production cost to produce bio fuels are economically most feasible and they should be prioritized in the Government Program so that it may become economically sustainable along the years, as well as generate adequate profit to the farmers of each culture. (author)

  8. [National population policies. Costa Rica. Oficina de Planificacion Nacional y Politica Economica].

    Science.gov (United States)

    1979-12-01

    Any population policy aimed at influencing population growth, or spacial distribution of population must take into consideration social policies, such as education and health, and also demographic policies, such as reduction of mortality. Such policy must be global in its outlook, and must plan for long term results. Economic and social development carries with it the almost irreversible phenomena of demographic transition and urbanization, and its implementation must never violate the fundamental rights and the dignity of the individual citizen. Designing a strategy to achieve certain demographic objectives implies the coordinated action of different sectorial policies, and a very precise knowledge of existing circumstances.

  9. Chile: Una Vision Politica, Economica y Social (Chile: A Political, Economic, and Social View).

    Science.gov (United States)

    Cortes-Hwang, Adriana

    1972-01-01

    This address seeks to explain in brief the historical background and political, economic, and social conditions leading to the democratic election of a Marxist president in Chile. A historical sketch of Chilean government from independence in 1810 is provided with a description of the situation just before Salvador Allende's election in 1969. Some…

  10. La regola monetarista per la politica economica: una critica. (The monetarist policy rule: a critique

    Directory of Open Access Journals (Sweden)

    D. CURRIE

    2013-12-01

    Full Text Available L'articolo concorda con una visone monetaristica della  gestione della domanda , e più in particolare con quello che è diventato noto come la regola dei criteri monetaristici - una politica ad anello aperto delle più semplici possibilità di esecuzione . L'autore esamina l'evoluzione di pensiero su questa regola , a partire dalla propria scrittura di Friedman e si muove attraverso il cambiamento di pensiero rappresentato dal aspettative razionali. E ' con forza sostenuto che le argomentazioni teoriche per le politiche monetarie ad anello aperto sono deboli , e che la debolezza pratica di queste politiche sono state in gran parte anticipate dalla letteratura teorica .The paper is concerned with monetarist views on demand management, and more specifically with what has become known as the monetarist policy rule - an open-loop policy of the simplest possible design. The author examines the evolution of thinking on this rule, starting with Friedman’s own writing and moving through the shift in thinking represented by the rational expectations literature. It is forcefully argued that the theoretical arguments for open-loop monetary policies are weak, and that the practical weakness of these policies were in large part anticipated by the theoretical literature.JEL: E13, E52

  11. Il doppio mercato dei cambi: uno strumento addizionale di politica economica.

    Directory of Open Access Journals (Sweden)

    V. BARATTIERI

    2014-08-01

    Full Text Available This paper analyses the possible effects of the two-tier foreign exchange market. This system, which has been in operation in Belgium for over 15 years, has recently found new supporters, as is indicated by the fact that during the international monetary crisis of May 1971 the EEC Commission counselled its adoption. The author first analyses the reasons which may justify restrictions on the freedom of capital movements, both in the short run and in the longer term. Some of the technical characteristics of a two-tier foreign exchange market are then examined before the well-known Mundell analysis of the efficiency of monetary and fiscal policy in an open economy is extended to the case of a country with such a system. Finally, the author draws some conclusions and compares a two-tier system with other instruments designed to reduce the undesired repercussions of high capital mobility.JEL: F31, F36, E62

  12. La valutazione economica del trattamento farmacologico con antipsicotici nella schizofrenia: una revisione sistematica della letteratura

    Directory of Open Access Journals (Sweden)

    R. Ravasio

    2005-03-01

    Full Text Available Schizophrenia is a chronic, severe, and disabling brain disease. Approximately 1 percent of the population develops schizophrenia during their lifetime. Available treatments can relieve many symptoms, but most people with schizophrenia continue to suffer some symptoms throughout their lives; it has been estimated that no more than one in five individuals recovers completely. The introduction of second-generation antipsychotics, also defined as atypicals, has increased the therapeutic options available for individuals with schizophrenia. Potential benefits of these agents include a more favourable profile in terms of positive and negative symptoms, less adverse effects and better cognitive functioning than first-generation antipsychotics. It is uncertain whether atypical antipsychotic agents, as prescribed in ordinary practice, are a cost-effective alternative to conventional agents. This study examined the financial and clinical implications of using atypical antipsychotics in the treatment of schizophrenia, considering both related costs and consequences. To elaborate the paper, we reviewed 8 economical studies regarding the comparison between atypical and typical antipsychotics, published in the years 1998-2004. In 5 studies atypical antipsychotics were cost-saving compared to typical, in 2 studies they were cost-neutral and in one study they resulted cost-effective. Consequently typical antipsychotics were cost-saving just in one study.

  13. Lecciones de la gran depresion para la recuperacion economica en 2009

    National Research Council Canada - National Science Library

    Romer, Christina D

    2009-01-01

    Este articulo compara la Gran Depresion de los anos treinta con la actual crisis mundial y presenta algunas lecciones utiles para el diseno de politicas que permitan superar la crisis y comenzar una recuperacion firme...

  14. Mass torts e responsabilità per danno ambientale: una analisi economica

    NARCIS (Netherlands)

    Parisi, F.; Dari-Mattiacci, G.

    2009-01-01

    Nel presente studio verranno esaminate alcune delle problematiche giuridiche e delle categorie economiche introdotte dalla nuova normativa europea in tema di danno ambientale. Le nostre argomentazioni tenderanno a dimostrare che le ipotesi di danno ambientale caratterizzabili come mass torts non

  15. Castor oil biodiesel: an economic evaluation; Biodiesel de mamona: uma avaliacao economica

    Energy Technology Data Exchange (ETDEWEB)

    Pires, Monica de Moura; Alves, Jaenes Miranda; Almeida Neto, Jose Adolfo de; Almeida, Cezar Menezes; Sousa, Geovania Silva de; Cruz, Rosenira Serpa da; Monteiro, Renata; Lopes, Beatriz Sampaio; Robra, Sabine [Universidade Estadual de Santa Cruz, Ilheus, BA (Brazil). Grupo Bioenergia e Meio Ambiente]. E-mails: mpires@uesc.br; jaenes@uesc.br; jalmeida@uesc.br; roserpa@uesc.br

    2004-07-01

    The production cost of castor oil biodiesel by methyl way and its economic viability, using as reference the production cost data of castor oil and the implantation of the pilot plant at UESC - state university of Santa Cruz, Bahia State, Brazil was determined. From this information, it was seen that the estimated price of castor oil biodiesel is close to the diesel price in the Itabuna market, Bahia state, Brazil. The indicators show economic viability of the mini-power plant installation. Such information are preliminary estimative for the market and can be modified as function of changes in the main factors used to have the production costs, as well as the sectorial policies that drives the activity as much in levels of raw material production as in biodiesel.

  16. Analisis de convergencia economica en el interior de Chiapas: municipios, regiones e inconsistencias aparentes

    National Research Council Canada - National Science Library

    Lopez Arevalo, Jorge Alberto; Pelaez Herreros, Oscar

    2012-01-01

    ...) en la elaboracion del indice de desarrollo humano municipal en Mexico, se comprueba que, en el interior de Chiapas durante el periodo 20002005, se dio un proceso de fuerte convergencia a nivel...

  17. Constitutional aspects of the economical public policies implantation; Aspectos constitucionais da implantacao de politicas publicas economicas

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Rogerio Emilio de [Centro de Estudos da Advocacia-Geral da Uniao, Sao Paulo, SP (Brazil)

    2004-10-15

    The article describes a picture, demonstrating the process of production and distribution of indispensable goods to the life in society, which we constructed the notion of capitalism, of which comprehension of cyclic crisis is fundamental to the analysis of the constitutional aspects of implantation of economic public policies. Cyclic crisis whose analysis and consequent comprehension have been object of study of great economy thinkers trying if not to eliminate, at least alleviate their consequences.

  18. Caracterizacion tecnica y economica de los agrosistemas de produccion en dos resguardos indigenas del Putumayo (Colombia)

    National Research Council Canada - National Science Library

    Vandreé Julián Palacios Bucheli; Juan Carlos Barrientos Fuentes

    2014-01-01

      The intended outcome of this research is to comparatively assess the farm systems in two indigenous territories of Putumayo (Colombia): San Flix (1 10 34.67 N and 76 55 04.33 W), and Tamabioy (1 10 24.36 N and 76 56 55.54 W...

  19. Guia para estudiantes: Ayuda economica, 2002-2003 (The Student Guide: Financial Aid, 2002-2003).

    Science.gov (United States)

    Department of Education, Washington, DC. Student Financial Assistance.

    This Spanish-language publication explains what federal student financial aid is and what types of student aid are available. The introductory section, "Student Aid at a Glance," presents information about what student aid is, who gets it, and how to get it. The second section discusses "Finding out about Student Aid." The next…

  20. Ayuda economica: Guia para estudiantes, 2001-2002 (Financial Aid: Student Guide, 2001-2002).

    Science.gov (United States)

    Office of Student Financial Assistance (ED), Washington, DC.

    This guide, written in Spanish, describes federal student aid programs for postsecondary education and how to apply for them. It begins by outlining sources for learning about student aid, such as school financial aid administrators, state higher education agencies, foundations, organizations related to particular fields of interest and toll-free…

  1. Como Solicitar la Asistencia Economica Federal para Estudiantes (How To Apply for Federal Student Aid).

    Science.gov (United States)

    Office of Federal Student Aid (ED), Washington, DC.

    This guide, written in Spanish, discusses reasons for going to college, how to pay for college, and how to apply for federal student aid in a series of brief, clear illustrations. Following outlines of financial benefits of college, college costs, and space to note costs for the student's area, the guide outlines these steps in the application…

  2. Energy efficiency / economic in agroecosystems; Eficiencia energetica/economica em agroecossistemas

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, Luis Carlos Ferreira de; Bueno, Osmar de Carvalho; Esperancini, Maura Seiko Tsutui [Universidade Estadual Paulista Julio de Mesquita Filho (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas

    2010-07-01

    The energy and economic evaluation of agroecosystems is important in the sense of appraise as maintainable these can be so much of the point of view energy as economic. The objective of the present paper was to show, starting from a case study, the construction of an indicator of energy/economic efficiency, whose results for four existent systems of corn production in the study area presented indexes that varied between 22.4 and 31.6. Of the reading of those values was possible to evaluate that all of the appraised systems show sustainability of long and short term. The proposed indicator if it shows solid in the agroecosystems appreciation concerning the analysis of your energy/economic sustainability. (author)

  3. Gas pipeline internal painting: an economical advantage; Uso da pintura interna em gasodutos: uma vantagem economica

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Christian E.; Santos, Paulo T. [Soco-Ril do Brasil S.A., Pindamonhangaba, SP (Brazil)]|[Faculdade de Engenharia Quimica de Lorena (FAENQUIL), SP (Brazil). Programa de Pos-graduacao em Engenharia Mecanica; Oliveira, Luiz C. [Confab Industrial S.A., Pindamonhangaba, SP (Brazil)]|[Faculdade de Engenharia Quimica de Lorena (FAENQUIL), SP (Brazil). Programa de Pos-graduacao em Engenharia Mecanica; Campos, Paulo H. [Confab Industrial S.A., Pindamonhangaba, SP (Brazil)

    2003-07-01

    Focusing the fabulous financial losses due to the corrosion problems, it had been necessary increase the range of new technologies and developments regarding material protection. The application of internal painting systems have become the most employed protection technical, showing a lot of benefits: improved flow characteristics of gas, reduced energy consumption of pumping, reduced pressure drops, easily application, inspection and maintenance, faster commissioning, reduced deposition of condensate and microorganism, excellent preventing corrosion during storage and operation, and others. The present paper describe the advantages and the technical and financial benefits of liquid epoxy internal coating. (author)

  4. Lo stato regionale italiano nel XXI secolo, tra globalizzazione e crisi economica

    Directory of Open Access Journals (Sweden)

    Tania Groppi

    2015-04-01

    Full Text Available This article deals with the evolution of the Italian regional system, since its establishment in 1947 up to the recent constitutional reform passed by the Senate in August 2014. The article indicates that there were three waves of decentralization between these dates, each of them followed by one reverse wave. In 2001, a quasi-federal model was adopted. However, since then this institutional settlement has been voided by the national legislature and the constitutional court, determining a re-centralization process, especially after 2008, when the economic crisis begun. This recent development showed that the quasi-federal system established in 2001 was not in tune with the Italian society which was asking for good governance at any level, rather than for more regional autonomy. The constitutional reform proposed in 2014 is aimed at responding to these needs, moving towards a “new regionalism” mainly focussed on regional administrative government.

  5. Hybrid system of generating electricity, solar eolic diesel San Juanico, Baja California Sur, Mexico; Sistema hibrido de generacion electrica, eolico solar diesel San Juanico, Baja California Sur, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Huerta, Javier [Comision Federal de Electricidad, La Paz, Baja California Sur (Mexico); Johnston, Peter [Technology Development, Arizona (United States); Napikoski, Chester [Generation Engineering, Arizona (United States); Escutia, Ricardo [Comision Federal de Electricidad, Baja California Sur (Mexico)

    2000-07-01

    that is generated thru the selling of electric energy, guarantees the sustainable operation of the system. [Spanish] La Comision Federal de Electricidad (CFE), y la empresa electrica norteamericana Arizona Public Service (APS), firmaron un convenio de colaboracion para desarrollar un proyecto de generacion de energia electrica con la utilizacion de energias renovables. Las premisas que se acordaron fueron las siguientes: 1. Enfoque del proyecto hacia una comunidad rural. 2. El costo de la obra debera ser menor al de su interconexion con el sistema convencional. 3. Aceptacion por parte de la comunidad, y autoridades gubernamentales. 4. Sustentabilidad de la operacion del sistema. Se efectuaron diversos analisis tecnicos y economicos asi como la evaluacion del recurso solar y eolico, estudio de impacto ambiental, plan de negocios para obtener la aprobacion de los recursos economicos ante instancias como Niagara Mohawk (NIMO), y la USAID, mediante la supervision de los Laboratorios Nacionales de Sandia. Despues de efectuarse las mediciones anemometricas y de radiacion solar, en diversas comunidades, se considero a la comunidad de San Juanico como la mas viable; tambien los aspectos de logistica, sociales, tamano de la comunidad y como detonador para las actividades economicas como la pesca y el turismo. La APS llevo a cabo el proyecto ejecutivo de conformidad con las recomendaciones de la Comision Federal de Electricidad. El proyecto consistio basicamente en la instalacion de 10 aerogeneradores de 10 Kw. c/u, un arreglo solar de 17 Kw., un inversor de 70 Kw., un banco de baterias de 432 Kwh., mas un motogenerador diesel de emergencia de 80 Kw. Ademas de la obra civil y electromecanica. Fue necesario involucrar a la poblacion en el conocimiento y seguimiento del proyecto desde sus inicios, ya que consideramos que este factor seria indispensable para lograr el exito del mismo. Se instalaron lamparas ahorradoras de energia en viviendas y alumbrado publico para optimizar el

  6. Technical recommendations for bilateral comparison in diagnosis radiology: part 3; Protocolo tecnico da comparacao bilateral em radiologia diagnostica: parte 3

    Energy Technology Data Exchange (ETDEWEB)

    Peixoto, J.G.P., E-mail: guilherm@ird.gov.br [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Almeida, C.E.V. de [Universidade do Estado do Rio de Janeiro (LCR/IBRAG/UERJ), Rio de Janeiro, RJ (Brazil). Lab. de Ciencias Radiologicas

    2015-07-01

    Uncertainty and results homogeneity need to following the technical procedure to bilateral comparison, then we select the equipment used, reference conditions and the data file to be used for all participant laboratory. The partial results will be presentation at metrology and medical physics congress. (author)

  7. Technical recommendations for bilateral comparison in diagnosis radiology: part 1; Protocolo tecnico da comparacao bilateral em radiologia diagnostica: parte 1

    Energy Technology Data Exchange (ETDEWEB)

    Peixoto, J.G.P., E-mail: guilherm@ird.gov.br [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Almeida, C.E.V. de [Universidade do Estado do Rio de Janeiro (LCR/IBRAG/UERJ), Rio de Janeiro, RJ (Brazil). Lab. de Ciencias Radiologicas

    2015-07-01

    By data from www.datasus.gov.br, then need each diagnostic quality dissemination should be periodically verify, therefore the bilateral comparison between calibration laboratory will be mandatory to quality services guarantee. (author)

  8. Technical & Scientific Reader in English [Temas tecnicos y cientificos en ingles, con ejercicios para aumentar el vocabulario].

    Science.gov (United States)

    Hirschhorn, Howard H.

    This book has been developed for those who wish to increase their understanding of technical and scientific English. It is designed especially for Spanish-speaking students, scientists, and technicians who are preparing to take courses in American schools or under instructors abroad. The 50 reading selections are drawn from a wide variety of…

  9. Tipos de aprendizaje en estudiantes de ensenanza media tecnico profesional. Un analisis desde la teoria de David Ausubel

    National Research Council Canada - National Science Library

    Olivera Rivera, Eduardo; Donoso Gomez, Juan; Orellana Saavedra, Angela

    2011-01-01

    ...] entre 16 y 21 anos de edad; su proposito es conocer el impacto del aprendizaje memoristico, guiado, autonomo y significativo en el nivel de logro y resultados de aprendizaje del plan de estudio diferenciado, basado...

  10. Technical support and preparations for the response to radiological emergencies; Soporte tecnico y preparativos para la respuesta a emergencias radiologicas

    Energy Technology Data Exchange (ETDEWEB)

    Cardenas H, J.; Ramos V, E.O.; Fernandez G, I.M.; Capote F, E.; Zerquera J, T.; Garcia L, O.; Lopez B, G.; Molina P, D.; Lamdrid B, A.I.; Benitez N, J.C.; Salgado M, M. [CPHR, Calle 20 No. 4113, e/41 y 47 Playa, CP 11300, La Habana (Cuba); Lopez F, Y.; Jerez V, P. [CNSN, Calle 28 e/5ta y 7ta, Playa, La Habana (Cuba)]. e-mail: cardenas@cphr.edu.cu

    2006-07-01

    The work picks up the efforts directed to elevate the technical capacity of the answer in front of the radiological emergencies. Expressing them by means of the actions carried out as for teaching, research and development and intervention before accidental radiological events. The same one reflects the leading role of the participant institutions in those marks of the answer system to radiological emergencies that for its technical level it satisfies the national and international demands in the matter. In execution of the mentioned goals research projects guided to endow to the national system of methodologies and procedures for the administration of radiological emergencies have been executed that favor the improvement of its technical and organizational capacities. As well as the postulates of the National Plan of Measures for Case of Catastrophes in the corresponding to radiological accidents. (Author)

  11. Aviazione legionaria: il comando politico-strategico e tecnico-militare delle forze aeree impiegate nel conflitto civile spagnolo

    Directory of Open Access Journals (Sweden)

    Edoardo Grassia

    2011-07-01

    Full Text Available In the Spanish Civil War 5699 soldiers and more than 700 planes of the Italian Regia Aeronautica (Italian Royal Air Force intervened. This military unit, in order not to put out Italian flags or badges, having regard to the secrecy of the military intervention in a foreign country, was named Legionary Air Force. In my article I will try to highlight the Italian anomalies of the political-strategic highest authorities who led to the decision of intervening in the Spanish conflict, since leaders that had no competent authority took part in the decision of the military intervention, while those who had full powers did not take part in it. Moreover, I will try to underline the heavy oddities related to the employment and the command of the aircraft which was often used according to the old legacy of the land force in order to substitute the artillery or the tanks. Finally, considering the Spanish conflict as a prelude to the Second World War, I will point up how the commitment in Spain led to false instructions in the military domain, maintained in the most challenging world conflict, as well as how the want of war material complained by the Italian duce in 1943 is to ascribe to the Italian limited far-sightedness in its commitment alongside Generalissimo Francisco Franco.

  12. Il processo tutoriale nell’ambito della formazione del Tecnico Sanitario di Laboratorio Biomedico neoassunto nel Laboratorio di Microbiologia

    Directory of Open Access Journals (Sweden)

    Iole Caola

    2005-06-01

    Full Text Available The tutorship in the training of the new engaged Biomedical Technician in the Microbiology Laboratory The training period for a new engaged laboratory technician in the microbiological laboratory is considered in this work. Experience and reflective practice are the key elements in order to develope professional skills and new knowledge in adults. Learning occurs through the interaction between persons and their concrete experience. The main subject, acting as a training developer, is the mentor: he/she is the expert colleague that create an ad personam relationship with the neophyta, to support the development of professionals skills and to psychologically sustain the new member in such a difficult period. The high complexity of the laboratory framework requires an intense and articulated tutorship, in order to link the learning times of the new technician with the working times and priorities, managing the learning incentives by a careful planning. In the tutorial function is particulary important the use of methods that facilitate the experential learning reflective practice, e.g. contract, briefing, practice and debriefing. In the working agreement the needs are taked in account, the training objectives and the time for the final skills are defined. The main operating instrument is the training plan, where the specific goals are divided in professional activities that will enable the acquisition of the final skills in a well defined working period, also taking into account a specific progressive control. Regarding the specific framework of the microbiology lab, eight points have been identified in the training plan to reach the main professional skills, while the activities, that are necessary to reach the desired results in a specific time period, have been defined.

  13. The radiological protection in technical-professional level in Mexico; La proteccion radiologica a nivel profesional-tecnico en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Vizuet Gonzalez, Jorge; Suarez, Gerardo [Instituto Nacional de Investigaciones Nucleares (ININ), Mexico (Mexico). Dept. de Proteccion Radiologica; Corona Montes de Oca, Julia [Centro de Bachillerato Tecnologico ' Justo Sierra' , San Mateo Atenco (Mexico)

    2005-07-01

    This work describes the work done in the implementation of an educational project which aims the formation of technical-professional in radiation protection (RP) with official recognition in Mexico. The constant growth of business activities related to the use of radioactive material in industry, medicine and research has required the development and implementation of standardization by the regulatory authorities of our country. However the advance with regards to training of specialized personnel is reduced in comparison to current needs. in our country there is no technical personnel with studies recognised by the regulatory body in this specialty (RP), however quality assurance programs currently require an educational training that will help to meet the standards in the various activities that develop in the use and handling of sources and ionizing radiation generating equipment, reason why it was developed and implemented this educational project. Additionally induce and promote the need for the peaceful use of nuclear energy and ionizing radiation, at the national level is one more reason to implement the programme at upper secondary level, with the purpose to have knowledge related to the topic. The technical course has a duration of six semesters (three years), and currently there are two generations of graduating. The plan of study consists of the required disciplines for upper secondary level more plus those corresponding to technological training in radiological protection.

  14. Technical and economical aspects of the electric power systems automation; Aspectos tecnicos e economicos da automacao dos sistemas eletricos

    Energy Technology Data Exchange (ETDEWEB)

    Siqueira, Gustavo F.G.; Achkar, Luiz Roberto; Yamanaka, Alberto S.

    1997-07-01

    This presents an overview on the technical and economical aspects of the electric power automation. The document analyses the automation necessity, anomalies in the distribution system, noise generators, systems of supervision, control and quality analysis of the energy and technical and financial aspects.

  15. Power factor correction at the Miguel Hidalgo refinery; Correccion del factor de potencia en la refineria Miguel Hidalgo

    Energy Technology Data Exchange (ETDEWEB)

    Dominguez Gonzalez, Gustavo [Petroleos Mexicanos, Refineria Miguel Hidalgo, Tula de Allende (Mexico)

    1992-12-31

    In this paper the theoretical fundament and formulae of the power factor are analyzed and a relationship among kilowatts, kilovars and power factor, is shown; also it deals with power factor in combination with load groups, as well as the numerical calculation of the required kvar for the desired improvement of the power factor. Additionally the technical and economical aspects of the capacitors and synchronous motors are contemplated, as well as their location in the electric system in order to achieve the maximum benefits. Finally, the savings obtained with the installation of capacitors in the electric power system of the Miguel Hidalgo refinery, are explained. [Espanol] En el presente trabajo se analizan los fundamentos teoricos y formulas del factor de potencia y se muestra la relacion entre kilowatts, kilovars y factor de potencia; tambien trata al factor de potencia combinado de grupos de cargas, asi como el calculo numerico de los KVAR necesarios para la mejora deseada del factor de potencia. Ademas se contemplan aspectos tecnicos y economicos de los capacitores y los motores sincronos, asi como la ubicacion de los mismos en el sistema electrico para lograr los maximos beneficios. Finalmente se explican las ganancias economicas que se obtuvieron al instalarse capacitores en el sistema electrico de potencia de la refineria Miguel Hidalgo.

  16. Production costs in planning new generation projects; Costos de produccion en la planeacion de nuevos proyectos de generacion

    Energy Technology Data Exchange (ETDEWEB)

    Trejo Perez, Guillermo A. [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

    1997-12-31

    This paper outlines the historic circumstances that currently affect the Luz y Fuerza del Centro (LFC), as well as the need of applying new economic techniques to channel the required investments in order LFC adapts the generation of electric energy to the energy demand that it has to attend and recovers from the lack of investment in this line, given the autonomy conditions that nowadays prevail. Also, the technical-financial aspects that influence the decision making, are mentioned [Espanol] En el presente trabajo se esbozan las circunstancias historicas que ahora influyen en Luz y Fuerza del Centro (LFC), asi como la necesidad de aplicar las tecnicas economicas para la canalizacion de inversiones requeridas para que LFC adecue la generacion de energia a la demanda de energia que le corresponde atender y recuperarse de la falta de inversion en este renglon, dadas las condiciones de autonomia que ahora le atanen. Tambien se numeran los aspectos tecnico-financieros que influyen para la toma de decisiones

  17. Nonceramic insulators for the transmission power lines. Part I: Experiences of a promising technology; Aisladores no ceramicos para las lineas de transmision. Parte I: Experiencias de una tecnologia prometedora

    Energy Technology Data Exchange (ETDEWEB)

    Fierro Chavez, Jose Luis [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    1999-07-01

    The nonceramic insulators have special characteristics that make them attractive to solve problems detected in glass or porcelain insulators, mainly in zones of high contamination and vandalism. In this first part a panorama is presented of the operative experience with nonceramic insulators for transmission power lines in different parts of the world until the beginning of the Nineties decade. The tendency in its use has increased remarkably in new transmission projects, mainly in the United States, but the operative experience shows that the selection of such insulators requires a careful analysis and of a pursuit of its behavior in the field that allows the establishments of its technical - economic advantages or disadvantages of its long term application. [Spanish] Los aisladores no ceramicos poseen caracteristicas especiales que los hacen atractivos para resolver problemas detectados en los aisladores de vidrio o porcelana, principalmente en zonas de alta contaminacion y vandalismo. En esta primera parte se presenta un panorama de la experiencia operativa con aisladores no ceramicos para las lineas de transmision en diferentes partes del mundo hasta principios de la decada de los noventa. La tendencia en su uso ha incrementado notablemente en nuevos proyectos de transmision, principalmente en los Estados Unidos, pero la experiencia operativa muestra que la seleccion de dichos aisladores requiere de un analisis cuidadoso y de un seguimiento de su comportamiento en campo que permita establecer las ventajas o desventajas tecnico - economicas de su aplicacion a largo plazo.

  18. Avaliação de habilidades de linguagem e pessoal-sociais pelo Teste de Denver II em instituições de educação infantil Evaluacion de habilidades de lenguaje y personal-sociales por el Test de Denver II em instituiciones de educacion infantil Evaluation of language and personal social abilities by the Denver Test II in institutions of infantile education

    Directory of Open Access Journals (Sweden)

    Magda Andrade Rezende

    2005-03-01

    jardines infantiles y pré-escolares brasileñas esa ación és poco realizada. OBJETIVO: evaluar por el segundo año consectivo, habilidades de las áreas de lenguaje y personal-social de uma cohorte de niños que frecuentan 3 jardines infantiles de la ciudad de São Paulo. METODO: el grupo estudiado fué conformado por 30 niños desde los cero hasta los cuatro años, de nivel-sócio econômico homogeneo según instrumento para evaluación de nivel de pobreza urbana. Según este instrumento todas las famílias estaban en la faja superior de clasificación. Para evaluación del desarollo fué utilizado el Test de Triage de Desarollo de Denver II, empleado en dos momentos distintos en el primer año de acompanhamiento de la cohorte y una vez en el segundo año. RESULTADOS: en el área personal-social la mejora fué significativa de la 1ª para la 2ª evaluación, lo que no ocurrió en el área de lenguaje a lo largo de las 2 evaluaciones. Por lo tanto, a partir de los 3 años de edad los niños pasaron a obtener resultados peores. En cuanto a los sexos no hubo diferencias significativas en los desempenhos de las dos áreas. CONCLUSIÓN: és possible que las habilidades de los niños en el área personal-social hayan sido incrementadas por las condiciones de las instituiciones, lo que no ocurrió en el área de lenguaje. No se puede afirmar la causa de estos acontecimientos, aunque sea intrigante la proporción adulto/niño que disminuye después de que los niños cumplen 3 años de edad, pero otras investigaciones son necesárias aun la continuidad de esta cohorte.Supervision and promotion of development are important care given to children enrolled in day-care centers and pre-schools. International and national organisms have systematized strategies to supervise child development but in Brazilian day-care centers this action is not well performed. OBJECTIVE: To assess, after a two-year follow-up, personal and social language abilities in a cohort of children enrolled in

  19. EVALUACION QUIMICO-BIOLOGICA DE 1,1'-HIDROCARBILENBISINDAZOLES CON POTENCIAL ACCION TRIPANOCIDA: DISEÑO, SINTESIS Y EVALUACION DE UNA NUEVA FAMILIA DE INDAZOLES DERIVADOS

    OpenAIRE

    AGUILERA VENEGAS, BENJAMIN ALBERTO ALFREDO

    2012-01-01

    Un profundo estudio químico-biológico de 1,1'-hidrocarbilenbisindazoles se llevó a cabo con el propósito de obtener nuevas perspectivas acerca de los mecanismos de acción involucrados en la acción tripanocida de una serie de indazoles derivados con potencial actividad contra Tcruzi. El estudio se inició evaluando los mecanismos de reducción mediante VC. Los resultados evidenciaron que todos los nitro derivados presentan una cupla correspondiente a la generación de un nitro anión radical y la ...

  20. Technical and economic feasibility of distributed generation of electricity; Viabilidade tecnica e economica de geracao distribuida de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Rabelo, Frederico Augusto Ornelas; Espirito Santo, Marcos Vinicius do; Leite, Leonardo Henrique de Melo; Silva, Arlete Vieira da [Centro Universitario de Belo Horizonte (UnBH), MG (Brazil)], e-mails: fred.aor@hotmail.com, marcos_ves@yahoo.com.br, leonardo.leite@prof.unibh.br, arlete.silva@prof.unibh.br

    2011-07-01

    This article focuses on the technical and economic feasibility of the design and implementation of energy micro nets distributed generation (GD). For this, a study was conducted in a rural area to assess the potential of generating electricity from renewable sources, and this has assisted the Brazilian network of conventional energy. We studied the renewable energy village, considered the conventional system of generation, transmission, distribution of electricity in this region and the technical and economic feasibility of implementing distributed generation and its interconnection to the basic network or not. The methodological procedures were used bibliographic and documentary research, interviews with standardized forms, and Case Study. This study was conducted in Minas Gerais assessing the current conditions of the electrification of the area surveyed and deployment of the types of electricity sources - biomass (biogas and burning eucalyptus), wind, solar photovoltaic. The calculations were made from it with companies and budgets. It is conceived, then, models of generating electricity through renewable sources constitutes a GD. Finally, they estimated the costs of implementation of the models studied in the community where they were cost estimates for electric power production through private investment, considering some possible scenarios to be created, namely: generation for own consumption, generation the sale of surplus and possible expansions. In this way demonstrated the high value of the investments required for the use of renewable sources in electricity generation small, given the current scenario. (author)

  1. Economic analysis of a 20 kW gasifier; Analise economica de um gaseificador de 20 kW

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Marcos Vinicius Miranda da; Rocha, Brigida Ramati Pereira da [Universidade Federal do Para (NEDS/UFPA), Belem, PA (Brazil). Nucleo de Energia para o Desenvolvimento Sustentavel], e-mail: neds@ufpa.br

    2006-07-01

    The gasification of biomass residues has been pointed as an alternative in electricity supplying for small communities of the Amazon region, because it promotes a significant substitution of the diesel oil in the electric power generation. This paper presents an economic analysis of an electricity generation system (gasifier and generator set) of 20 kw that is installed in the community of Jenipauba, in the State of Para. That analysis confirms the economic attractiveness of that energy alternative on the generator sets that operate exclusively with diesel oil. It also shows the impact of the labor law on electricity generation cost, as well as the need of subsidizing the electric power generation, because the community of Jenipauba is very poor. (author)

  2. Oportunidades econo?micas a partir del manejo de plantas medicinales usadas para enfermedades maternoperinatales en la provincia Chachapoyas

    OpenAIRE

    Rodri?guez Q., Mari?a P.

    2013-01-01

    El embarazo es un proceso fisiolo?gico normal,porque el proceso de la reproduccio?n se desarrolla por patrones biolo?gicos. Sin embargo, el embarazo altera los procesos psico- fisiolo?gicos de la mujer y tiene el potencial para afectar el estado de salud, de la madre y del hijo. El reducir la mortalidad materna en tres cuartas partes es uno de los principales objetivos de desarrollo del milenio, debido a la incidencia de muertes maternas ocasionadas por complicaciones del embarazo, parto o...

  3. L’attualità di Bruno de Finetti nella crisi in corso dell’economia e della teoria economica

    Directory of Open Access Journals (Sweden)

    Felice Roberto Pizzuti

    2016-10-01

    Full Text Available (A note on the contributions by Augusto Graziani and Paolo Sylos Labini on the endogenous nature of money supplyThe article compares the analyses of money supply by Augusto Graziani and Paolo Sylos Labini. Both authors criticised neoclassical monetary theory highlighting the endogenous nature of money supply. However, they explained the sources of money supply differently, in view of their different approach towards the Classical, heterodox neoclassical and Keynesian traditions. The analysis of both authors' works highlights the fecundity of a stage in Italy's economic thought that would seed into several promising developments.JEL Classification: H55, D64, B31

  4. Economic viability of mature fields: a successful experience; Viabilidade economica de campos maduros: uma experiencia bem sucedida

    Energy Technology Data Exchange (ETDEWEB)

    Pacheco, Almi C.; Carvalho, Antonio Marcio D.; Santana, Francisco Pablo P.; Neto, Francisco A.S.; Souza, Thiago T. [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil)

    2008-07-01

    After the end of the PETROBRAS monopoly in Brazil, the country started a new exploratory stage. Until the beginning of the pre-salt researches, the discovery of new oil mature fields was almost impossible. To take back the incentive to new researches about on-shore basins, without affect the focus on the off-shore basins, the Agencia Nacional de Petroleo, Gas Natural e Biocombustiveis (ANP) has been making efforts to increase the segment of oil medium and small size producers, who are called independent producers. To guarantee the good results, ANP has created auctions of mature and original fields of oil. The objective is to attract small and medium companies, so they can contribute to new technology of land exploration. The auctions have brought strength to the independent producers. The aim of this article is to show the case of Quiambina field, which belongs to the Campo-Escola Project, created by ANP in partnership with Universidade Federal da Bahia (UFBA) to revitalize the fields considered as matures, returned by PETROBRAS at the end of its monopoly era. To prove the economic viability of these mature shields, it will be used real values, get in the first four years of production. (author)

  5. Valutazione economica di Infliximab (Remicade® vs Etanercept (Enbrel® nel trattamento dell’artrite reumatoide

    Directory of Open Access Journals (Sweden)

    G. L. Colombo

    2003-06-01

    Full Text Available Rheumatoid arthritis is one of the most severe chronic pathologies, affecting the whole organism, with invalidating outcomes that affect the quality of life of the patients. Its prevalence is estimated to be about 0,5% in Italy, with elevated costs for the national health system (NHS and the society, in spite of the best treatment with traditional therapies that include anti-inflammatory and disease modifying antirheumatic drugs (DMARDs. The introduction of new drugs with biological activity, mainly acting through an antagonism of tumor necrosis factor (anti-TNF, is a great advance in the management of the disease, as their use has been shown to be effective in slowing the progression of the joint damage, and sometimes in reversing it,. The present article present a cost-minimization study conducted by comparing the two anti-TNFs available in Italy, etanercept and infliximab, assuming equal efficacy and approached from the perspectives of the Italian NHS and society. Only differential costs were considered, i.e. drug acquisition, drug administration and patient monitoring costs, and the analysis comprised two treatment years, in order two account for the cost differences between the first treatment year and the following. The analysis showed that infliximab represents the more convenient alternative from both the NHS and the society points of view, mainly due to lower drug acquisition costs, which offset the higher drug administration costs: the total two year treatment costs per patient with etanercept resulted of 20.173 euro and 22.164 euro from the societal and NHS perspectives, respectively, while the same costs resulted of 13.715 euro and 14.795 euro with infliximab. These results were tested with thorough sensitive analyses, conducted by varying the principal cost and time consumption estimates, that showed that etanercept results less convenient in all the hypothesis tested.

  6. Secure and economic operational of a gas transportation system; Operacion economica y segura de un sistema de transporte de gas

    Energy Technology Data Exchange (ETDEWEB)

    Sardi, Oscar Jose; Trichilo, Claudia; Valpreda, Carlos [Transportadora de Gas del Sur S.A. (Argentina)

    2003-07-01

    Since 1992, Transportadora de Gas del Sur (TGS) has been operating the longest gas pipeline system in South America. Prior to that date, the system was managed by GE, a state-owned company. Early on in the administration of the company, some improvement opportunities were identified in the technical, commercial, management and personnel fields. An integrated transformation process was developed which involved major investments, acquisition of new technology, re-design of the work force, and new work methodologies. The course of action followed by the company was based on an attempt to achieve permanent improvement on business results. This paper is the result of the improvements applied to our gas transportation system. Due to the time and cost assessment required by scheduled turbine compressor maintenance works (83 - 538.220 hp), a Contingency Plan for turbine compressor breakdowns was established as well as an Economic Dispatch, which can determine low-cost operations in specific periods of time (during the year). This work details the actions taken. (author)

  7. Study of economic viability of biodiesel pilot plant; Estudo de viabilidade economica de planta piloto de biodiesel

    Energy Technology Data Exchange (ETDEWEB)

    Pagliardi, Odail; Maciel, Antonio Jose da Silva; Lopes, Osvaldo Candido; Albiero, Daniel [Universidade Estadual de Campinas (FEAGRI/UNICAMP), SP (Brazil). Fac. de Engenharia Agricola

    2006-07-01

    The present paper shows the economics viability of a half-industrial plant, operating with the transesterification in vegetal oil transformation or animal fats to bio diesel. The pilot plant needed an investment of R$ 400,000.00, and it showed viable with 99.99 percents of efficiency, with feeding of 100 kg per hour of raw material working in only 12 hours daily at 25 days per months. It was considered the more usual economic analysis tools, as payback, internal rate of return and net present value. (author)

  8. EL SISTEMA SOCIAL EDUCATIVO: EL CASO DE LA FACULTAD DE CIENCIAS ECONOMICAS Y SOCIALES DE LA UNMDP

    OpenAIRE

    Gonzalez Carella, María Inés; Hammond, Fernando Adolfo; Mertens, Violeta; Rech, Lautaro; Schiavón, Guido Ezequiel

    2014-01-01

    El comportamiento de la matrícula universitaria resulta un fenómeno relevante que requiere de un abordaje complejo dadas las múltiples determinaciones que lo implican y el impacto que tiene la educación superior en tanto bien público sobre el conjunto de la sociedad. En el presente trabajo nos proponemos utilizar la Teoría de Sistemas Sociales de Niklas Luhmann como un instrumento para indagar sobre la incidencia y/o vinculación entre la estructura del Sistema Social Educativo y la prob...

  9. La “familizzazione” dell’impresa: alcune riflessioni sul familismo imprenditoriale in Brianza nella crisi economica attuale

    Directory of Open Access Journals (Sweden)

    Simone Ghezzi

    2017-03-01

    Full Text Available Drawing on a ethnographic research in an area characterized by a dense network of small family-run firms this article looks at the transformation of such enterprises and at their inner relations. It argues that family-run firms are a special kind of organization of production as family (non-commodified labour and commodified labour are interwoven. Familistic relations, which permeates the enterprise and creates the basic conditions for its formation and functioning, is termed entrepreneurial familism. It sets the organizational structure of the firm and defines the strategies of the transmission of capital adopted by the entrepreneurs. The leader of a small family firm may decide to include or to exclude some kin members from the process of intergenerational succession in order to secure corporate earnings and good performance in the upcoming future. Yet, the choice of share redistribution and ultimately the planning of succession may be a highly contested business decision within the kin group. This form of unequal transmission of capital, based on gender, may leave painful scars within the family, undermining or even destroying personal relationships and kinship solidarity. 

  10. Taxation of the economical activities developed in the sea regions; Tributacao das atividades economicas desenvolvidas nas regioes maritimas

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Marcio Branco de [PETROBRAS, Rio de Janeiro, RJ (Brazil). Servico Juridico. Setor de Planejamento Tributario

    2000-07-01

    Usually, the power of taxation is straightly connected to the idea of territory. It is important to establish the limits of tax jurisdiction not only for taxes in view of which territoriality is part of the taxable event as defined in legislation - import tax (I.I.) and excise tax (IPI) -, but also for those the location of a possession - property tax (IPTU) - or the place in which services are rendered - service occupation tax (ISS) and sales tax (ICMS) - appear as the main component of the taxable event. According to the United Nations Convention on the Law of the Sea, 1982, and the Brazilian internal legislation as well, Federal Government has full sovereignty over its territorial sea -12 mile zone. In other areas (contiguous zone, exclusive economic zone and brazilian continental shelf), sovereignty is restricted to the supervision of some activities, not involving power of taxation. (author)

  11. Ragioni di scambio e crescita economica in Italia. (Terms of trade and Italian economic growth: accounting for miracles

    Directory of Open Access Journals (Sweden)

    E. GRILLI

    2013-12-01

    Full Text Available Il lavoro sostiene che le condizioni politiche ed economiche del dopoguerra hanno portato al rifiuto della politica  di autarchia di prima della guerra in  favore di un'economia aperta . Tale decisione ha avuto implicazioni non solo per il commercio estero e i pagamenti, ma soprattutto per la struttura stessa del settore industriale italiano . Gli autori mostrano come le prestazioni di questa struttura industriale emergente è stata condizionata dall'andamento dei prezzi delle materie prime importate , e successivamente dei  semi - lavorati riguardo ai prezzi ai quali i prodotti finali possono essere venduti nei mercati di esportazione . Questi cosiddetti termini industriali di scambio si combinano con le spiegazioni di periodo di crescita del dopoguerra già esistenti che non hanno a che fare di  "miracoli " per essere spiegati.The work argues that post-war political and economic conditions led to the rejection of the pre-war policy of autarchy in favour of an open economy. This decision had implications not only for external trade and payments, but more importantly for the very structure of the Italian industrial sector. The authors show how the performance of this emerging industrial structure was conditioned by the performance of the prices of imported raw material, and subsequently semi-manufactured industrial inputs and the prices at which the final products could be sold in export markets. This so-called industrial terms of trade is combined with the previously existing explanations of post-war growth period that does not have to rely on “miracles” as explanation.JEL: F10, N34, O14

  12. Nuclear energy and economic competitiveness in several normative systems; Energia nuclear y competitividad economica en varios sistemas normativos

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, S. [University of Greenwich, 30 Park Row, London SE10 9LS (United Kingdom)

    2009-07-01

    The serious challenge imposed by the necessity of reducing the gases emission of greenhouse effect in the electric generation sector, it has renovated the interest in the new plants construction of nuclear energy. Nevertheless, since the use of the nuclear energy began to descend ago more of 25 years, it is has speculated continually about the possible nuclear rebirth. Are such predictions based in solid basis or are mere groundless prognostics? The objective of the present document is to analyze the economic aspects of the nuclear energy, to identify the key factors that they allow to determine its competitiveness and to sound the possible markets for the new plants of nuclear energy. To achieve this, it is divided in the following sections: Revision of the current state of the nuclear energy, including the location, the type and capacity of the plants; Identification of the variables that determine the economic situation of the nuclear energy; Revision of the recent predictions and of the economic aspects of the Olkiluoto nuclear power plant of Finland; A revision by market of the possible future of the new nuclear facilities in the coming decade. (Author)

  13. The economic crisis and the energy efficiency programs; A crise economica e os programas de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Naturesa, Jim Silva; Mariotoni, Carlos Alberto [Universidade Estadual de Campinas (GPESE/FEC/UNICAMP), SP (Brazil). Fac. de Engenharia Civil, Arquitetura e Urbanismo. Grupo de Planejamento Energetico e Sistemas Eletricos; Gomes, Marcio H. de Avelar [Universidade de Brasilia (UnB), Gama, DF (Brazil)

    2010-07-01

    This paper presents some data from the Brazilian economy (2009 and 2010) and their impact on energy efficiency programs. It is also shown the main results of the National Electricity Conservation Program (PROCEL) and PROCEL INFO, which aims to gather and make available information on the rational and efficient use of energy. At the end, we present information showing that MSMEs (Micro, Small and Medium Companies) should be the main focus of the technological innovation programs aimed to energy efficiency. (author)

  14. Programa seguro-desemprego : combinaço de eficiencia economica e proteção social

    OpenAIRE

    Koyanagi, Raquel

    2011-01-01

    A discussão sobre a combinação de eficiência econômica e proteção social tem estado em evidência nos debates acadêmicos, nas reflexões sobre políticas públicas e em outras análises sobre o Estado de Bem-Estar Social. A combinação entre eficiência econômica e proteção social entrou na agenda do Estado de Bem-Estar Social, mesmo no Brasil aonde não se desenvolveu efetivamente. Essa combinação mostrou ser possível em alguns países de industrialização avançada, como a Dinamarca, país que adotou a...

  15. Restructuring of the electric sector: economic, financial and political motivations; Reestruturacao do setor eletrico: motivacoes economicas, financeiras e politicas

    Energy Technology Data Exchange (ETDEWEB)

    Bajay, Sergio V.; Carvalho, Eliane B. de [Universidade Estadual de Campinas, SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico

    1996-12-31

    The economic motivations have been indicated as the main ones by the governments responsible for the transformations in the electric sector.Nevertheless, the financial and political motivations are dominant in many countries of the third world.These motivations are analyzed having as background the suggestion of the World Bank for the sector 4 refs.

  16. The taxation jurisdiction of the ISSQN in the exclusive economic zone; A competencia tributaria do ISSQN na zona economica exclusiva

    Energy Technology Data Exchange (ETDEWEB)

    Raposo, Rodrigo Luis Keller [Keller Raposo Escritorio Juridico, Rio de Janeiro, RJ (Brazil)

    2012-07-01

    The oil and natural gas exploitation in the Exclusive Economic Zone will propel the economy of the country, states and municipalities, due to tax revenues, jobs creation. It will also attract new businesses needed to support all the demand created by the main service and correlates. The Tax Service, under the municipal jurisdiction, is a major source of revenue. As the services are performed on the high seas and there is no law to regulate the territorial extent of each municipality, it can be argued that certain Artificial Island (oil platform, for example) is located within the extension of municipal sovereignty, which will allow the ISS taxation, problems will arise. This paper addresses these problems. (author)

  17. Qué matemáticas se utiliza en la investigación economica-empresarial

    Directory of Open Access Journals (Sweden)

    Mª Isabel Escalona Fernández

    2002-01-01

    Full Text Available El almacenamiento y clasificación de todos los trabajos de investigación económica catalogados de forma sistemática por títulos, campos, fuentes, descriptores, etc., constituye una base de datos documental, y tiene como uno de los objetivos facilitar a los investigadores, en cualquier momento, la recuperación de documentos. El presente trabajo describe una técnica, parametrizando y evaluando información subyacente en las bases de datos, que nos permite dar una utilidad extra a la que inicialmente fue creada. Mediante la parametrización y evaluación de la información subyacente en los datos, y utilizando la lógica booleana, ha permitido determinar cual ha sido la aportación de las matemáticas en la investigación económica. La fuente de información ha sido ECONLIT (Economic Literature Index, una de las principales bases de datos en la literatura económica-científica, que tiene una cobertura de mas de 400 diferentes revistas científicas económicas, con un total de 249.896 artículos, publicados en el período1990-99, y catalogados en 24 campos distintos, procesándose un total de 5.747.608 datos. Los resultados muestran que temática cuantitativa ha contribuido más en la investigación y qué áreas de la Economía y Empresa han sido las más propensas a un mayor uso de las Matemáticas.

  18. Economic implications of the new legislation on environmental responsibility; Implicaciones economicas de la nueva legislacion en responsabilidad ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Borrego Gomez, A.; Riera, P.

    2009-07-01

    The European Environmental Liability Directive borrows from the US legislation the equivalency analysis tool. It is a tool to calculate the necessary remediation to return the environment to its baseline situation, as if it had not suffered the damage. The equivalence between damage and remediation can be estimated in terms of services (hectares of wetlands, for instance) or resources (trout, cork oaks), but under some circumstances the law also provides for welfare equivalency (generally expressed in monetary units). This articles introduces the equivalency tools, analyzes them in a cost-benefit analysis framework, and discuses some related issues, like the time treatment or the organization of a habitat banking system. (Author) 8 refs.

  19. La importancia de la obligacion de informacion en las relaciones financieras de consumo. Una aproximacion economica y juridica

    National Research Council Canada - National Science Library

    Monsalve Caballero, Vladimir; Rodado Barreto, Diana Paola

    2010-01-01

    Este articulo tiene por objeto establecer el fundamento economico y juridico de las obligaciones de informacion que tienen las entidades financieras con los consumidores en las diferentes etapas del iter contractual...

  20. La convenienza economica di un impianto agro energetico ad olio vegetale: un’opportunità per il settore agricolo

    Directory of Open Access Journals (Sweden)

    Adele Finco

    2010-12-01

    Full Text Available The development of agro-energy chains, in particular vegetable oil production, can represent, in Italy, an opportunity for the achievement of policy’s objectives set by the European Union and for the agricultural sector.The aim of this study is to verify the existence of the “vegetable oil chain” at national and regional level, taking into account the Marche Region scenario (centre of Italy, the number of plants and their connection with the agricultural sector. From the methodological point of view, the paper evaluates trough a cost benefit analysis the economic performance of a vegetable oil plant, considering how the policies and the prices of raw materials affect it.

  1. Características académicas de los alumnos que inician estudios universitarios de ciencias economicas y empresariales

    Directory of Open Access Journals (Sweden)

    Guerrero Manzano, M.

    2005-01-01

    Full Text Available Los docentes universitarios muestran un interés constante porque el alumno alcance los objetivos de conocimiento planeados en su asignatura y finalice con éxito sus estudios. De ahí su empeño manifiesto por mejorar la eficiencia de los procesos de enseñanza-aprendizaje. Sin embargo, se constata en las universidades españolas la presencia de altos porcentajes de abandono de los estudios junto al incremento del tiempo necesario para egresarse. No existe una causa única para explicar estos problemas. En las Facultades de Ciencias Económicas y Empresariales se destacan algunas características típicas del alumnado que concurre a estos estudios. Situaciones peculiares que se concretan en carencias en la formación previa del estudiante, falta de motivación, elección sin vocación de la carrera y baja aptitud hacia el estudio, de una importante proporción de alumnos. Este trabajo analiza las características de los alumnos que han iniciado estudios en carreras de Economía y Empresa desde 1995 hasta 2004, en relación con los ítems detallados, a fin de comprobar si responden a las creencias comunes sobre la cuestión.

  2. Installation of a hydrokinetic turbines: technical and economic feasibility; Instalacao de turbinas hidrocineticas: viabilidade tecnica e economica

    Energy Technology Data Exchange (ETDEWEB)

    Els, Rudi Henri van; Vianna, Joao Nildo de Souza [Universidade de Brasilia (UnB), DF (Brazil). Centro de Desenvolvimento Sustentavel; Brasil Junior, Antonio Cesar Pinho [Universidade de Brasilia (UnB), DF (Brazil). Dept. de Engenharia Mecanica

    2008-07-01

    The generation of electric energy with hydrokinetic turbines is a technological option to attend households, communities and small villages in their basic electricity needs. These turbines, that generates power around 1 kW, appeared in the lasts decades as another technological alternative for decentralized electricity generation with diesel fuel generator sets. This article presents the various types of hydrokinetic turbines that exist and details the technical and economic feasibility of the second generation of hydrokinetic turbines designed by the University of Brasilia. The technical requirements on the selection of hydrokinetic sites, along with the diverse forms of fixing and mooring the turbine in the river are also showed. The economic feasibility of the use of this technology is presented along with the calculation of the generation costs accompanied with an assessment of the different items comprising this cost. At the end, this paper closes with a discussion on the management and operation of decentralized electric energy generation systems with renewable sources, showing that there is a need to design appropriate management mechanisms for this kind of situation, taking into account the specific aspects of its supply and principally of its use. (author)

  3. Le prime globalizzazioni: il processo di sviluppo e l'integrazione economica tra Mediterraneo ed Atlantico (secc. XVI-XX

    Directory of Open Access Journals (Sweden)

    Amedeo Lepore

    2008-12-01

    Full Text Available Los más recientes estudios de historia económica internacional han proporcionado nuevas líneas de investigación sobre el origen de la “globalización”, así como sobre sus causas y consecuencias. En particular, el concepto mismo de globalización no es sólo aplicado a la actualidad inmediata, al retrotraerse a la luz de eventos históricos de primera importancia, especialmente en el curso de varias fases de la época moderna y contemporánea de la humanidad. La “mundialización” no es una novedad. De hecho, según una esquematización muy interesante, podemos individualizar al menos otros dos períodos en cuyo término de tiempo y espacio han mutado profundamente sus caracteres, como son: la época del descubrimiento del Nuevo Mundo y la fase de la considerada “revolución industrial”.______________________ABSTRACT:The latest researches in international economic history have begun new lines of examining the “globalization” origins, as well as the causes and the relative consequences. In particular, the globalization concept itself can be post-dated and verified by the light of historical events of great importance, occurred during several periods of the humanity Modern and Contemporary Age. The globalization is not a piece of news. In fact, according to an elemental simplification, at list two other periods can be characterized in which the time and spaces terms have deeply changed their character, have been considerably reduced: the New World discovery and the stage of the assumed 'industrial revolution'.

  4. Valoracion economica en salud y medio ambiente del control de contaminantes orgánicos persistentes en colombia

    National Research Council Canada - National Science Library

    Cesar Augusto García UBaque; Martha Lucía Vaca-Bohórquez; Juan Carlos García-Ubaque

    2015-01-01

      ObjectiveTo estimate the economic benefits related to environment and health in the context of the implementation of the Stockholm Convention for the control of Persistent Organic Pollutants in the country...

  5. Numerical simulation by CFD of the behavior of the Inter stage 1 flow in stable state of a gas turbine Frame 7; Simulacion numerica por CFD del comportamiento del flujo en la inter etapa 1 en estado estable de una turbina de gas frame 7

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez R, Alejandro; Lopez H, Juan Arturo R; Mazur Czerwiec, Zdizslaw; Cordero G, Jesus [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2006-07-01

    This technical article presents an analysis including the three-dimensional modeling of the flow channel in the nozzle and the movable blade in order to discover the velocity distribution, temperatures and pressures of the main hot gas flow produced in the inter-stage 1. The aim is to establish key evaluation criteria leading to an opportune repair and therefore smaller operation expenses. Thus, the application of a commercial software of CFD is described to model the channel of the first stage in the gas turbine Frame 7, the geometric architecture is shown in the web of the gas turbine, as well as the border conditions used in the results assessment. [Spanish] Este articulo tecnico presenta un analisis que incluye la modelacion tridimensional del canal de flujo en la tobera y el alabe movil para conocer las distribuciones de las velocidades, temperaturas y presiones del flujo principal de gases calientes que se desarrollan en la inter-etapa 1. El fin es establecer criterios clave de evaluacion que conduzcan a una oportuna reparacion y por ende menores gastos de operacion. Asi, se describe la aplicacion de un software comercial de CFD para modelar el canal de flujo de la primera etapa de una turbina de gas Frame 7, se muestra la arquitectura geometrica y el mallado de la turbina de gas, asi como las condiciones de frontera usadas y la validacion de resultados.

  6. O processo de ensino-treinamento da tecnica e tatica no basquetebol do Brasil : um estudo sobe a otica de professores do ensino superior e tecnicos de elite

    OpenAIRE

    Valdomiro de Oliveira

    2007-01-01

    Resumo: O objetivo geral da pesquisa foi explorar o conhecimento acumulado de técnicos brasileiros e professores do ensino superior em relação ao processo ensino-treinamento da técnica e da tática no basquetebol do Brasil. De forma especifica, buscou-se contextualizar os conteúdos e as estratégias metodológicas utilizadas por técnicos e professores do ensino superior para o processo ensino-treinamento dos fundamentos técnicos e dos sistemas defensivos e ofensivos nas diferentes categorias da ...

  7. Technical Procedures Management in Gas-Phase Detoxification Laboratory; Procedimientos Tecnicos de Ensayo en el Laboratorio de Destoxificacion en Fase Gas

    Energy Technology Data Exchange (ETDEWEB)

    Cardona Garcia, A. I.; Sanchez Cabrero, B

    2000-07-01

    The natural cycle of Volatile Organic Compounds (VOCs) has been disturbed by the industrial and socioeconomic activities of human beings. This imbalance in the environment has effects the ecosystems and and the human health. Initiatives have been planned to mitigate these adverse effects. In order to minimize the hazardous effects, initiatives have been proposed for the treatment of gaseous emissions. The solar photocatalysis appears as a clear and renewable technology in front of the conventional ones. In CIEMAT this lines is being investigated as the base of a future implementation at a preindustrial scale. Technical procedures are written in this document for testing Gas-Phase detoxification at lab scale in the Renewable Energy Department (DER) CIEMAT-Madrid to eliminate the VOCs by using the solar photocatalysis technology. (Author) 18 refs.

  8. Technical aspects of contrast-enhanced magnetic resonance imaging of the breast: literature review; Aspectos tecnicos da ressonancia magnetica de mama com meio de contraste: revisao da literatura

    Energy Technology Data Exchange (ETDEWEB)

    Leopoldino, Denise de Deus; Gracio, Tatiana Schiller [Hospital Sao Luiz, Sao Paulo, SP (Brazil). Setor de Tomografia e Ressonancia Magnetica]. E-mail: leopoldinod@yahoo.com; D' Ippolito, Giuseppe; Bezerra, Alexandre Sergio de Araujo; Gracio, Tatiana Schiller [Hospital Sao Luiz, Sao Paulo, SP (Brazil). Setor de Diagnostico por Imagem

    2005-07-15

    With the advances in surface coil technology and the development of new imaging protocols in addition to the increase of the use of contrast agents, contrast enhanced magnetic resonance imaging (MRI) has emerged as a promising modality for detection, diagnosis and staging of breast cancer. Despite these advances, there are some unresolved issues, including no defined standard technique for contrast-enhanced breast MRI and no standard criteria of interpretation for the evaluation of such studies. In this article, we review the literature and discuss the general requirements and recommendations for contrast agent-enhanced breast MRI, including image interpretation criteria, MR equipment, dedicated radiofrequency coils, use of paramagnetic contrast agents, fat-suppression techniques, planes of acquisition, pulse sequence specifications and artifact sources. (author)

  9. Fuel distribution logistics in Brazil: technical and economic aspects; Aspectos tecnico-economicos da logistica da distribuicao de combustiveis no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Esteves, Heloisa Borges B.; Bicalho, Lucia N. [Agencia Nacional do Petroleo, Gas Natural e Biocombustiveis (ANP), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    In Brazil, there are around 250 companies operating in the automotive fuel distribution segment, responsible for the automotive fuels wholesale commercialization activity. Those companies supply not only gas stations, but also final consumers and TRR's. Their clients are distributed regionally, which requires flexibility and the ability to supply clients efficiently at the smaller possible cost, transforming variables such as the transportation alternatives adopted, the location of the storage facilities and its correct dimension on key decisions. This paper analyses the general scenario of the fuels distribution logistics in Brazil from a economic perspective, and its impacts on the companies competitive strategies. (author)

  10. Technical and scientific production of the Brazilian Nuclear Technology Development Center in the year 1993; Producao tecnico-cientifica do CDTN em 1993

    Energy Technology Data Exchange (ETDEWEB)

    Sousa, M.G.

    1994-01-01

    This paper presents a list of the technical and scientific documents produced by CDTN during 1993. These documents are available through the library, with exception of those remarked with asterisks, due to restrictions imposed by contractual bounds. (author).

  11. Technical and environmental aspects of combined cycle power stations with integrated gasification (CCGI); Aspectos tecnicos y medioambientales de las centrales de ciclo combinado con gasificacion integrada (CCGI)

    Energy Technology Data Exchange (ETDEWEB)

    Beltran Mora, Hector Alejandro; Urias Romero, Francisco [Facultad de Ingenieria, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

    2004-06-15

    A description is presented of the operation of the Combined Cycle Power Stations with Integrated Gasification (CCGI) where the use of solid fuels (coal, vacuum residues, petroleum coke, and biomass) or liquids is possible in a thermal power station with the efficiency and many of the own environmental benefits of the combined cycles. The gasification process is analyzed, that is a thermo-chemical process by means of which a fuel that is in solid state or liquid becomes to the gaseous state by means of a partial oxidation and the obtained gas of this process is called synthesis gas (syngas, by its abbreviations in English) that is used in Combined Cycle Power Stations as a substitute for the natural gas. Also the other components of this type of power stations are shown, such as the air separating unit, and some of the modifications that are due to make to adapt a gas turbine so that it uses syngas, and the considerations of their integration with the air separating unit to optimize the operation of the plant are detailed. A comparison of efficiency values of power stations CCGI with the conventional carbon-electric and the power stations of combined cycle that use natural gas is also shown. Finally the emissions of pollutants of SO{sub 2}, NO{sub x} and CO{sub 2} are analyzed. The possibility of using fuels like petroleum coke and vacuum tower residues that are produced in the Cadereyta refinery is studied for the possible construction of a CCGI power station in Mexico. [Spanish] Se presenta la descripcion del funcionamiento de las centrales ciclo combinado con gasificacion integrada (CCGI) donde es posible el uso de combustibles solidos (carbon, residuos de vacio, coque de petroleo, biomasa) o liquidos en una central termica con la eficiencia y muchos de los beneficios ambientales propios de los ciclos combinados. Se analiza el proceso de gasificacion, que es un proceso termoquimico mediante el cual se convierte un combustible que se encuentra en estado solido o liquido a estado gaseoso mediante una oxidacion parcial y el gas obtenido de este proceso se llama gas de sintesis (syngas, por sus siglas en ingles) que es utilizado en Centrales de Ciclo Combinado como sustituto del gas natural. Se muestran tambien los demas componentes de este tipo de centrales como la unidad separadora de aire y se detallan algunas de las modificaciones que se deben de hacer para adaptar una turbina de gas para que utilice syngas y las consideraciones de su integracion con la unidad separadora de aire para optimizar la operacion de la planta. Se muestra una comparacion de valores de eficiencia de las centrales CCGI con las carboeletricas convencionales y con las centrales de ciclo combinado que utilizan gas natural. Finalmente se analizan las emisiones de contaminates de SO{sub 2}, NO{sub x} y CO{sub 2}. Se estudia la posibilidad de utilizar combustibles como coque de petroleo y residuos de vacio que se producen en la refineria de Cadereyta para la posible construccion de una central CCGI en Mexico.

  12. Estudio cualitativo de las diferencias de genero en la eleccion de opciones academicas en los estudiantes del bachillerato cientifico-tecnico

    OpenAIRE

    Mª del Carmen RODRÍGUEZ MÉNDEZ; Jose Vicente PEÑA CALVO; García Pérez, Omar

    2016-01-01

    El artículo analiza las causas que ayudan a explicar las diferencias de género en las elecciones académicas a partir de la opinión de los progenitores, docentes y estudiantes. Se ha usado una metodología cualitativa basada en el uso de grupos de discusión. Se organizaron cinco grupos con estudiantes que cursan la modalidad de bachillerato científico-técnico en distintas instituciones de educación secundaria del Principado de Asturias, también se realizaron seis grupos con docentes y dos grup...

  13. Technical paradigm and power cogeneration with bagasse from sugar cane in Goias, Brazil; Paradigma tecnico e cogeracao de energia com bagaco de cana-de-acucar em Goias

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Josias Manoel [Centro Federal de Educacao Tecnologica de Goias, Goiania, GO (Brazil). Coord. de Saneamento Ambiental

    2006-07-01

    The article shows, through technical elements, the experience of producing electrical energy, generated in some sugar industrial plants of Goias state, by burning sugar cane husks in boilers. This production has supplied the state concessionaires, but the supply has declined in the past years, due to several issues, of economic, technical and political order. Despite of this, government has done some effort in reactivating the supply, by modifying the energy politics. (author)

  14. Propuesta de acciones sociosanitarias para Asturias. Estrategias de salud y atención a la población con enfermedades crónicas. Informe Tecnico

    OpenAIRE

    Suarez, F.M. (Francisco); Bruno, Julio; Martinez, Teresa; Fernandez, Jose; Arco, M.d. (Marta); Lopez, Belen; Fernandez, J.M. (Jose); Velasco, C.T. (Carmen); Martinez, Fernando; Hevia, J.R. (Jose)

    2016-01-01

    INDICE DE MATERIAS: DEFINICIÓN...................7 OBJETIVOS....................7 Objetivos secundarios........7 LAS PERSONAS USUARIAS........7 ACCIONES PRIORITARIAS........9 1. Creación e implementación de estructuras de coordinación sociosanitaria...11 I. Comisión Interinstitucional para la coordinación sociosanitaria.... 11 II. Subcomisión Técnica Interinstitucional para la coordinación sociosanitaria. 11 III. Equipos operativos de atención sociosanitaria...........

  15. Bilateral comparison of the calibration laboratories in radiodiagnosis: Technical Protocol 16/17; Comparacao bilateral dos laboratorios de calibracao em radiodiagnostico: Protocolo Tecnico 16/17

    Energy Technology Data Exchange (ETDEWEB)

    Peixoto, J.G.P., E-mail: guilherm@ird.gov.br [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Almeida, C.E.V. de [Universidade do Estado do Rio de Janeiro (LCR/IBRAG/UERJ), RJ (Brazil). Lab. de Ciencias Radiologicas

    2016-07-01

    The need to standardize the results in diagnostic radiology conditions of calibration laboratories, taking into account the applicability to conventional radiology , mammography and computed tomography where the total demand for diagnostic imaging is ≈70 % ≈4 % and ≈2 % respectively. The objective of the technical protocol is not only the equipment used , but also in terms of reference and the evaluation worksheet measurement uncertainties . The results of stability and energy dependence of transfer chamber shows these adequacy for the propose. (author)

  16. Energy conservation analysis using Fuzzy logic considering technical and environmental aspects; Analise da conservacao de energia utilizando logica fuzzy considerando aspectos tecnicos e o meio ambiente

    Energy Technology Data Exchange (ETDEWEB)

    Haddad, Jamil; Yamachita, Roberto Akira; Guardia, Eduardo Crestana [Universidade Federal de Itajuba (UNIFEI), MG (Brazil). Centro de Excelencia em Eficiencia Energetica; Reis, Alexandre de Souza Rodrigues dos; Pinto, Luiz Fernando do Monte [Furnas Centrais Eletricas, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    This article presents the results obtained in the Project of Research and Development of Furnas Centrais Eletricas, which was accomplished with the partnership of the Fundacao de Pesquisa e Assessoramento a Industria - FUPAI. This project analyzed technically and economically the pollution caused in the electric net by the use, in growing scale, of nonlinear loads, such as: compact fluorescent lamps, microwave ovens, VHS systems, DVD, sound systems, etc. It was also analyzed the environmental impact caused by these lamps due to the presence of the mercury; and as complement to the traditional theory of economical analysis, a tool of economical analysis was developed using the theory of fuzzy sets for the uncertainty variables or of difficult quantification. (author)

  17. A RELAÇÃO ENTRE ESTRESSORES OCUPACIONAIS E ESTRATÉGIAS DE ENFRENTAMENTO EM PROFISSIONAIS DE NIVEL TECNICO DE ENFERMAGEM

    Directory of Open Access Journals (Sweden)

    Sandra de Souza Pereira

    2016-01-01

    Full Text Available Investigación cuantitativa, descriptiva y exploratoria, con diseño transversal, que investigó los factores de estrés que experimentan los profesionales de enfermería de nivel técnico que trabajan en un hospital general e identificar las estrategias de enfrentamiento más utilizadas por ellos. La muestra contó con 310 participantes. Se utilizaron cuestionario sociodemográfico y la Escala de Modos de enfrentamiento a los Problemas. Para el análisis se utilizó estadística descriptiva y se calculó el alfa de Cronbach. 60% de los profesionales utilizan estrategias centradas en el problema; 57,4% atribuyen su estrés a condiciones laborales, el 26,8% a las relaciones laborales, el 5,5% a la falta de recompensa en el trabajo y sólo el 0,6% de los problemas personal. Se concluye que las estrategias centradas en los problemas eran las más utilizados, lo que indica una aproximación del estresor con el fin de solucionarlo. Los factores de estrés identificados indican la necesidad de una planificación, estimulación y reconocimiento de los profesionales que actúan en enfermería.

  18. Technical and economical parameters of the recovery of straw for six systems; Parametros tecnico-economicos do recolhimento do palhico por seis sistemas

    Energy Technology Data Exchange (ETDEWEB)

    Michelazzo, Marcio Beraldo; Braunbeck, Oscar Antonio [Universidade Estadual de Campinas (FEAGRI/UNICAMP), SP (Brazil). Fac. de Engenharia Agricola], Emails: marcio.michelazzo@agr.unicamp.br, oscar@agr.unicamp.br

    2006-07-01

    An analysis was done of the economic and mechanical parameters involved in the packing processes of the sugarcane trash. A model was defined to estimate the cost of trash recovery simulating the field capacity, oil consumption, depreciation, repair and maintenance as well as labor required for the field and transport operations. Six recovery systems were studied both from the technical and economical points of view. The results showed that handling billets and trash together, described as 'Integral harvesting', has the lowest cost for trash recovery, both for short and long distances, followed by bulk handling of chopped trash, the round bale, the cotton bale and finally the pellet and briquette systems. (author)

  19. Presentation of the first career in Mexico of Technical Professional in Radiological Protection; Presentacion de la primera carrera en Mexico de Profesional-Tecnico en Proteccion Radiologica

    Energy Technology Data Exchange (ETDEWEB)

    Vizuet G, J.; Suarez, G.; Corona Montes de Oca, J.; Arias C, M. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2002-07-01

    The present educational project has the purpose to show the realized work for introducing the first career of Radiological Protection technician in Mexico. There for the developed activities concerning to the integration of the syllabus is described as well as those realized concerning to the participant teaching personnel training in summarized form. The syllabus has been developed with the purpose to fulfil with the training programs established by the Comision Nacional de Seguridad Nuclear y Salvaguardias, as well as those required by the Secretaria de Salud with respect to the fulfilment of the Normas Oficiales Mexicanas set, international recommendations and that suggested by the training guides emitted by the Direccion General de Capacitacion y Produccion of the Secretaria de Trabajo y Prevision Social. (Author)

  20. Analisis tecnico, socioeconomico y ambiental de la electrificación con energía solar fotovoltaica aislada para vivienda rural en Hato Corozal, Casanare, Colombia

    Directory of Open Access Journals (Sweden)

    Edwin Blasnilo Rúa Ramírez

    2017-06-01

    Full Text Available La electrificación con energía solar fotovoltaica aislada es la opción más viable para vivienda rural, en especial si se encuentra muy distante del sistema nacional interconectado. Hato Corozal, Casanare, Colombia, es un municipio estructurado en su área rural por fincas muy alejadas entre sí. Su mayor inconveniente de desarrollo social y económico es la falta de electricidad como servicio de primera necesidad.  La gobernación de Casanare a través del fondo nacional de regalías aprobó la instalación de 206 sistemas solares fotovoltaicos (SFV a las familias más alejadas y más vulnerables del municipio. El objetivo principal de esta investigación fue realizar una evaluación socio-económica de las familias de la zona rural del municipio, beneficiadas con la instalación de estos sistemas SFV. Además, se realizó un análisis técnico de simulación de la operación del SFV dimensionado con 2 días sin sol y luego 12 días con sol, también se hizo una simulación de la operación del SFV dimensionado con 14 días con sol. Esta investigación se abordó desde el enfoque metodológico descriptivo y de investigación aplicada de campo que incluyó visita a las viviendas, aplicación, análisis de instrumentos y registro fotográfico.  Los resultados presentan gran incidencia desde un enfoque social, económico y ambiental que puede llegar a ser implementado en otras áreas rurales del país como ejemplo de uso de tecnologías limpias en favor del desarrollo rural sostenible.

  1. Hazard urban wastes in Italy. Analysis of the technical and methodology opportunities; Rifiuti urbani pericolosi in Italia. Analisi delle problematiche e opportunita' tecnico metodologiche

    Energy Technology Data Exchange (ETDEWEB)

    Cafiero, F.

    2001-07-01

    In this report is illustrated the Life 99 ZERO/RUP project on the recovery of hazard urban wastes, to experiment the picking up and the recycling of the wastes, to develop more information for the waste-operators and citizens, and to archive important data on the typology, quantity and diffusion of the wastes in Italy. [Italian] Il presente rapporto scientifico illustra il progetto Life 99 ZERO/RUP sulla sperimentazione del recupero dei rifiuti pericolosi urbani, per sviluppare la conoscenza presso gli operatori e i cittadini di questi, e di raccogliere informazioni sulla tipologia, quantita' e diffusione degli stessi in Italia.

  2. Technical study of brazilian vehicular natural gas program and impact of normative regulators; Estudo tecnico do programa de gas natural veicular e o impacto das normas reguladoras

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Newton; Fragoso, Karine; Caselli, Bruno [Servicco Nacional de Aprendizagem Industrial (SENAI), Rio de Janeiro, RJ (Brazil); Burrowes, Mariana [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Dept. de Engenharia de Materiais

    2004-07-01

    This paper it concept to present the evaluation of the Brazilian natural gas program in the last decade, our technological aspects and use, as those economical implications of this program. Verification of environment advantages from this gas system and the relation between another fuel system from the bibliographic review. Discussions of future scenarios in this market share, those threats and opportunities. The impact of new stands from next years and it considerations. Finally will be present proposes for sustainable grow of this program with base in the relationship of market, stand and technology, in expose aspects. (author)

  3. Oil field decision analysis based on technical-economic indicators; Analise de decisao baseada em indicadores tecnico-economicos para um campo petrolifero

    Energy Technology Data Exchange (ETDEWEB)

    Ravagnani, Ana Teresa Gaspar; Munoz Mazo, Eduin; Schiozer, Denis [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Dept. de Engenharia de Petroleo. Lab. de Simulacao de Fluxo em Meios Porosos (UNISIM)

    2008-07-01

    This work presents a case study consisting of a synthetic offshore field in deep water and 28 deg API oil representing a gas solution model with water injection without gas cap. Several alternatives of strategies are proposed, regarding different configurations and number of wells, besides different limits of injection and production rates, as well as, completion layers. The objective is to show that different strategies can be obtained according to the indicator chosen by the decision maker. Even when the Net Present Value (NPV) is a very used indicator in the investment analysis, with the utilization of other technical-economical indicators, other investment alternatives different from those proposed when just VPL is utilized, can become feasible. Additionally, other aspects are analyzed, such as the possibility of changes in the production capacity with other oil prices levels. It is also proposed the production strategy optimization in this work, changing the time of production and the injection/production rate limits. (author)

  4. Diseño de una estrategia didactica de trabajo en equipo para mejorar el aprendizaje significativo en la asignatura de proceso contable en el bachillerato tecnico

    OpenAIRE

    Chiliquinga Muquinche, Darwin Marcelo

    2015-01-01

    1. Introducción.--2.Planteamiento de la Propuesta de Trabajo.--3.Marco Teórico.--4.Metodología.--5.Resultados.--6.Conclusiones y Recomendaciones. El desconocimiento de estrategias metodológicas de trabajo en equipo influye en la participación de los jóvenes, impidiéndole el autocontrol, la empatía, el arte de escuchar, resolver conflictos, y colaborar con los demás. Los docentes han estado acostumbrados a trabajar de una manera aislada con el estudiante, hasta el momento la educación no ha...

  5. ANÁLISE DO CONTEÚDO DAS INFORMAÇÕES TECNICO-CIENTÍFICAS DE FOLDERS PUBLICITARIOS DE ATIVOS MAGISTRAIS

    Directory of Open Access Journals (Sweden)

    Ana Claudia Tomaz Robles

    2016-12-01

    Full Text Available O setor magistral, a partir da lei dos medicamentos genéricos, teve uma grande expansão no Brasil, e passou a manipular inúmeros fármacos, cujas apresentações farmacêuticas são disponibilizadas pela indústria farmacêutica, com apresentações em dose individualizadas. além daqueles voltados à dermatologia e à homeopatia. Com o aumento do número de farmácias de manipulação no Brasil e devido à sua competitividade, surgiu a necessidade de divulgação de produtos e preços, que levaram a estratégias, para a promoção dos produtos e serviços. O objetivo deste trabalho foi analisar a linguagem publicitária, utilizada por empresas fornecedoras de matérias-primas para o setor magistral. Nos casos analisados, as imagens utilizadas para a promoção dos ativos magistrais nas peças publicitárias, de modo geral, são apelativas, usadas para causar impacto sobre o consumidor, de tal modo que influenciem a sua decisão de compra. As estratégias utilizadas pelo marketing foram figuras humanas, confrontando o antes e o depois. Essas imagens geralmente divulgam produtos voltados para o tratamento da obesidade, “peeling” facial, tratamento de cicatrizes, queda de cabelos. Os resultados do presente estudo sugerem que a publicidade dos produtos avaliados usou estratégias de marketing que estimulam o desejo do consumidor. Neste contexto, o uso das imagens femininas foi a estratégia da propaganda, em detrimento das informações sobre a eficácia e segurança do produto.

  6. Critical analysis of the daylight saving time; Analisis critico al horario del verano

    Energy Technology Data Exchange (ETDEWEB)

    Romero Paredes Rubio, Hernando [Universidad Autonoma Metropolitana Ciudad-Ixtapalapa, Mexico, D.F., (Mexico)

    2001-07-01

    The critical analysis is presented as a synthesis of the problem untied since the implementation of the daylight saving time. The often related history is retaken to introduce the reader into the context of the causes of a such program. The geometric aspect of the solar trajectories is discussed and the length of the day as a function of the latitude and the time of the year to have technical elements for the time displacement in a certain region. The technical implementation of the daylight saving time based on three elements is justified: time of dawn and the decline (length of the day), national economic motivation and tourism industry. Stands out that although the daylight saving time schedule has a set of social and economic benefits it is not centered in the individual but in the society as a whole. The errors in handling the information and the misinformation are pointed out as the main causes of the controversy, the discord and the political manipulation of competing groups. [Spanish] El analisis critico se presenta como una sintesis del problema desatado desde la implementacion del horario de verano. La historia muchas veces contada se retoma para introducir al lector en el contexto de las causas de un tal programa. Se discute el aspecto geometrico de las trayectorias solares y la longitud del dia como una funcion de la latitud y de la epoca del ano para tener elementos tecnicos para el desplazamiento horario en una region determinada. Se justifica la implementacion tecnica del horario de verano en funcion de tres elementos: hora de alba y del ocaso (longitud del dia), motivacion economica nacional e industria turistica. Se destaca que si bien el horario de verano tiene un conjunto de beneficios sociales y economicos no se centra en el individuo sino en la sociedad en su conjunto. Se senalan los errores de manejo de la informacion y la desinformacion como los principales causantes de la polemica, el desacuerdo y la manipulacion politica de grupos

  7. Use of refraction to increase the efficiency of solar panels; Uso de la refraccion para el incremento de la eficiencia en paneles solares

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Patino, J [Universidad de Guanajuato, Campus Irapuato-Salamanca, Salamanca, Guanajuato (Mexico)]. E-mail: jesusmp23@ugto.mx; Hernandez Figueroa, M. A; Lozano Garcia, J.M; Ireta Moreno, F; Rubio Maya, C [Universidad Michoacana de San Nicolas de Hidalgo Morelia, Michoacan (Mexico)]. E-mails: mahf@ugto.mx; jm.lozano@ugto.mx; fireta@ugto.mx; rmaya@umich.mx

    2013-03-15

    With the increased use of photovoltaic systems in dwellings and other areas, it is important the growing concern in sustainable development, as well as the tax benefits gotten by the acquisition of this type of systems. In this context, technical aspects of trading systems should be considered, as well as characteristics of sunlight, humidity, etc., where the photovoltaic equipment will be installed. This article seeks to increase the efficiency of commercial solar panels from a simple and economical perspective using refraction. Through three different tests, first normal operating conditions and two more tests with different conditions of temperature, humidity and water vapor the authors seek to understand the behavior of electric power generation of the PV system used. With the results obtained in this work set the tone by opening new opportunities to investigate more deeply the thermal and moisture characteristics of solar panels based on their efficiency and materials involved in the design. [Spanish] Con el incremento del uso de instalaciones fotovoltaicas en casas habitacion y en otros ambitos, es importante la creciente concientizacion del desarrollo sustentable, ademas de la utilizacion de los beneficios de impuestos que se tienen al comprar este tipo de sistemas. Bajo este contexto, se debe de considerar aspectos tecnicos de los sistemas comerciales, asi como caracteristicas de insolacion, humedad, etc., donde se instalen los equipos fotovoltaicos. En este articulo se busca incrementar la eficiencia de paneles solares comerciales desde una perspectiva sencilla y economica haciendo uso de la refraccion. A traves de tres diferentes pruebas; primeramente las condiciones normales de operacion y dos pruebas mas con diferentes condiciones de temperatura, humedad y vapor de agua los autores buscan conocer el comportamiento de la generacion de energia electrica de la instalacion fotovoltaica utilizada. Con los resultados obtenidos en este trabajo dan la pauta

  8. Obstruccion estrangulante del intestino grueso en equinos: evaluacion clinica y tratamiento quirurgico en dos casos

    National Research Council Canada - National Science Library

    Velasquez, Carlos A; Medina, Luis; Bermudez, Victor; Cegarra, Jesus; De Vera, Marisol; Giron, Juvenal; Urdaneta, Luis

    2009-01-01

    La obstruccion estrangulante es la combinacion de obstruccion simple del tracto gastrointestinal del equino acompanado de bloqueo del abastecimiento circulatorio, lo cual causa severa enfermedad intestinal...

  9. Evaluacion de la presencia de metales en residuales liquidos y su efecto potencial para una comunidad

    National Research Council Canada - National Science Library

    Lopez-Ceballos, C.R; Garcia, N; Valdez, R

    2010-01-01

    ... de las Lajas, Rrovincia La Habana, Cuba-- el contenido de metales pesados en residuales liquidos en el sistema de trampas y en el canal de desague, asi como su impacto en la zona circundante, en el periodo 2006-2008...

  10. MODELO PARA EVALUACION DE DERRAMES DE HIDROCARBUROS (HSSM) GUIA DEL USUARIO

    Science.gov (United States)

    The U.S. Environmental Protection Agency is charged by Congress with protecting the Nation's land, air, and water resources. Under a mandate of national environmental laws, the Agency strives to formulate and implement actions leading to a compatible balance between human acti...

  11. Evaluacion de las alteraciones conductuales y dopaminergicas en ratones con bajas concentraciones de plomo.

    OpenAIRE

    N. Martínez Riera; M.J. Gandur; Soria, N.; N. Riera de Martínez Villa

    2001-01-01

    La investigación de los efectos del plomo en animales de experimentación y sus consecuencias en el desarrollo neurológico conductual es compleja y controvertida. Conociendo que la maduración neurológica de los ratones ha culminado en edades que oscilan entre los 25-35 días, nuestro objetivo ha sido investigar si la administración de soluciones de diferentes concentraciones de plomo, durante tiempos establecidos de acuerdo a las dosis-ingesta, producía alteraciones en los ...

  12. Evaluation of a direct contact heat exchanger; Evaluacion de un intercambiador de calor de contacto directo

    Energy Technology Data Exchange (ETDEWEB)

    Siqueiros, J.; Bonilla, O. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    In this paper the application areas of the direct contact heat exchangers is discussed, as well as its main characteristics. A description is made of the experimental equipment designed and built at pilot scale including the instrumentation employed. The methodology employed as well as the analysis and the discussion of the results are also presented. [Espanol] Se mencionan las areas de aplicacion de los intercambiadores de calor de contacto directo, asi como sus caracteristicas principales. Se describe el equipo experimental a nivel piloto disenado y construido incluyendo la instrumentacion utilizada. Se presenta la metodologia empleada asi como el analisis y discusion de los resultados.

  13. Evaluacion de las propiedades mecanicas de poliesteramidas derivadas de los acidos tartarico y succinico

    National Research Council Canada - National Science Library

    Perez-Rodriguez, Angel T; Fernandez-Santin, Jose M; Alla, Abdellilah; Munoz-Guerra, Sebastian

    2012-01-01

    ...% de ester, obtenidas a partir de los acidos tartarico y succinico. Las mismas constituyen polimeros que presentan potencial aplicacion en el sector biomedico por su posible utilizacion en intervenciones quirurgicas para hilos de sutura...

  14. Evaluacion de impacto ambiental: herramienta en la formacion ambiental del arquitecto

    National Research Council Canada - National Science Library

    Alonso Gatell, Aymee; Leyva Fontes, Carmen Julia; Campos Velasquez, Erick

    2012-01-01

    ... que tratan la problematica ambiental, se emplearon metodos teoricos para interpretar datos empiricos y elaborar el marco teorico y encuestas a especialistas y a estudiantes que aplican estos temas al diseno. Como resultados de la implementacion del software se logra que el estudiante realice el estudio ambiental de manera dinamica e interactiva, lo cual contribuye a su formacion.

  15. Evaluation of cable ageing in Nuclear Power Plants; Evaluacion del envejecimiento de cables en centrales nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Lopez Vergara, T. [Empresarios Agrupados, A. I. E. Madrid (Spain); Alonso Chicote, J. [TECNATOM, S. A. (Spain); Burnay, S. [AEA Technology (UK)

    2000-07-01

    The majority of power, control and instrumentation cables in nuclear power plants use polymers as their basic material for insulation and jacket. In many cases, these cables form part of safety-related circuits and should therefore be capable of operating correctly under both normal and accident conditions. Since polymeric materials are degraded by the long term action of the radiation and thermal environments found in the plant, it is important to be able to establish the cable condition during the plant lifetime. Nowadays there are a number of different methods to evaluate the remaining lifetime of cables. In the case of new plants, or new cables in old plants, accelerated ageing tests and predictive models can be used to establish the behaviour of the cable materials under operating conditions. There are verified techniques and considerable experience in the definition of predictive models. This type of approach is best carried out during the commissioning stage or in the early stages of operation. In older plants, particularly where there is a wide range of cable types in use, it is more appropriate to use condition monitoring methods to establish the state of degradation of cables in-plant. Over the last 10 years there have been considerable developments in methods for condition monitoring of cables and a tool-box of practical techniques are now available. There is no single technique which is suitable for all cable materials but the range of methods covers nearly all of the types currently in use, at present, the most established methods are the indented, thermal analysis (OIT, OITP and TGA) and dielectric loss measurements, All of these are either non-destructive methods or require only micro-samples of material. (Author) 15 refs.

  16. Evaluacion de Mediciones Fisicas y de Ultrasonido para Estimaciones del Peso de la Pechuga

    Directory of Open Access Journals (Sweden)

    Melo JE

    2001-01-01

    Full Text Available El objetivo del presente trabajo fue evaluar la utilización de distintas mediciones como predictores del peso de la pechuga. En la experiencia 1 se utilizaron 32 pollos Anak y 32 pollos Ross, muestreados al azar de dos lotes de 400 animales de cada genotipo. A los 53 dias de edad se realizó la faena y una disección de cortes comerciales. Se tomaron los siguientes pesos: peso vivo (PV, de la canal (PC y de la pechuga (Pch. Se calculó para el análisis la proporción de cada uno sobre el peso vivo (%PC y %Pch. También se midieron el largo y el ancho de la pechuga con calibre. Se observaron diferencias entre genotipos para PV, PC, %PC, Pch y %Pch (p <0,05. Los animales de la línea Ross resultaron más pesados que los Anak, así coma su carcasa, pechuga y proporciones resultaron mayores. La Pch se correlacionó alta y positivamente con el PV. Ninguna de las mediciones con calibre in vivo significó un aumento de consideración en la precisión de la predicción de Pch. En la experiencia 2 se utilizaron 60 pollos INTA-Camperos, muestreados al azar de un lote de 100 animales. A los 69 días de edad se realizaron mediciones in vivo del largo y ancho de la pechuga con calibre, y de la profundidad por ultrasonido previo a la faena, midiéndose los mismos parámetros que en la anterior experiencia. La correlación entre PV y la Pch fue alta y positiva, pero media a baja con las mediciones con calibre. Se obtuvo una buena predicción de Pch (R²=0,75 a partir del peso vivo, del largo y de la profundidad de pechuga. La eliminación de la medición ecográfica no redujo el ajuste del modelo de manera significativa (R²=0,725.

  17. Evaluacion tecnologica de dispositivos integrados de naturacion y captacion pluvial en la vivienda de Mexico

    National Research Council Canada - National Science Library

    Cordova Canela, Fernando; Lopez Elizalde, Edna Cecilia

    2013-01-01

    ... integra por matrices de ponderacion y asociacion de conceptos, pretendiendo interrelacionar los conceptos de viabilidad tecnologica, impacto ambiental de la tecnologia y valoracion de atributos, para...

  18. Guia Practica para una Evaluacion Alternativa (Practical Guide to Alternative Assessment).

    Science.gov (United States)

    Herman, Joan L.; Aschbacher, Pamela R.; Winters, Lynn

    Guidance is offered in Spanish on the creation and use of alternative assessment, and a process model is presented that links assessment with curriculum and instruction, based on contemporary theories of learning and cognition. The introductory chapter provides background on the purposes of assessment and the need for new alternatives, with an…

  19. Evaluacion del desempeño y su efecto en la calidad total

    OpenAIRE

    Maya Maya, María Cecilia

    1993-01-01

    Su primera parte enfoca la calidad total como objetivo primario de la evaluación del desempeño. Hace un análisis de la comprensión del termino calidad total y de su alcance en el ambiente laboral. En segunda parte enfoca Evaluación del desempeño y da lineamientos y principios generales para la aplicación de la técnica, evitando así que el método de evaluación del despempeño se convierta en un condicionante negativo del ambiente laboral. El artículo esta dirigido a directores, jefes de...

  20. Tromboelastografia: evaluacion global de la coagulacion. Aplicaciones en el periodo perioperatorio

    National Research Council Canada - National Science Library

    Gempeler R., Fritz E; Perea B., Ana Helena; Diaz B., Lorena

    2011-01-01

    ...; ademas, se ha encontrado que su implementacion rutinaria conlleva la disminucion en el uso de transfusion de hemoderivados y, consecuentemente, en los costos y complicaciones asociadas a su administracion...

  1. Evaluacion de requerimientos ecologicos para el diseno de regimenes ambientales de caudales fluviales

    National Research Council Canada - National Science Library

    Diez-Hernandez, Juan Manuel

    2008-01-01

    ... en el paradigma del Regimen Ambiental de Caudales (RAC). Este trabajo sugiere una metodologia generica para establecer RAC confiables, que posibiliten el aprovechamiento hidrico a un coste ecologico admisible...

  2. Evaluacion ciudadana del desempeño de la Gestion Publica Municipal

    Directory of Open Access Journals (Sweden)

    Graciela Delgadillo

    2010-01-01

    Full Text Available This article presents the result of a study whit the objective to identify and measure the impact of the factors that the citizens uses to evaluate the public management performance in a specific territorial and temporary space in the sphere of action of local government. With a sample of 250 Mexican citizens that normally live in Guadalupe, Nuevo Leon, Mexico conformed by 126 (50,4% women of between 23 and 73 years with a mean of 43 years old and 124 (49,6% men of between 18 and 71 years with a mean of 38 years old, the most important findings allowed to identify the factors that mainly influence the evaluation that the citizen does about the local government performance are: the effectiveness of the public services, the honesty of the public workers and the accountability just only linked to the access of public information. The study also offers evidence that confirm variation does not exist between men and women in their way of local government performance evaluation.

  3. Evaluacion ciudadana del desempeño de la Gestion Publica Municipal

    OpenAIRE

    Graciela Delgadillo; Jorge Castillo

    2010-01-01

    This article presents the result of a study whit the objective to identify and measure the impact of the factors that the citizens uses to evaluate the public management performance in a specific territorial and temporary space in the sphere of action of local government. With a sample of 250 Mexican citizens that normally live in Guadalupe, Nuevo Leon, Mexico conformed by 126 (50,4%) women of between 23 and 73 years with a mean of 43 years old and 124 (49,6%) men of between 18 and 71 year...

  4. SINTESIS Y EVALUACION BIOLOGICA DE QUINONAS POLICICLICAS DERIVADAS DEL FURANO Y TIOFENO.

    OpenAIRE

    ESPINOZA VEAS, OMAR ALEJANDRO

    2008-01-01

    Se describe la oxidación aeróbica en medios no acuosos de aductos Diels-Alder de naftoquinonas y benzotiofenquinonas con dienos cíclicos. Los epóxidos provenientes de estas reacciones se emplearon como precursores de cicloalcanafio- y cicloalcabenzotiofen 265p.

  5. Evaluacion de los efectos de FCS-304 en modelos de depresión en roedores

    OpenAIRE

    Moreno Hernández, Laura Mercedes

    2015-01-01

    Se condujeron cinco diferentes experimentos para evaluar los potenciales efectos antidepresivos de la cumarina semisintética FCS-304, para ello se utilizaron 30 ratas Wistar y 30 ratones ICR del Departamento de Farmacia de la Facultad de Ciencias de la Universidad Nacional de Colombia. Los animales fueron distribuidos aleatoriamente en cinco diferentes grupos: vehículo, patrón (imipramina), dosis alta FCS-304 (150 mg/kg), dosis media (75 mg/kg) y dosis baja (50 mg/kg). El grupo de ratas fue a...

  6. Voltage stability evaluation of the Paraguayan system; Evaluacion de la estabilidad de tension del sistema paraguayo

    Energy Technology Data Exchange (ETDEWEB)

    Cardozo Sanchez, Freddy [Mirant Americas (United States); Fernandez Krekeler, Ubaldo [Administracion Nacional de Electricidad (ANDE), Asuncion (Paraguay)

    2001-07-01

    This document presents analyses of permanent status of the ANDE transmission system, seeking to evaluate the voltage stability and impact that would have possible reinforcements in 500 kV. The transmission under this new voltage level, besides to be a reinforcement to the system for satisfying the national demand, will permit the increase of energy exportation to Brazil, depending on the adopted reinforcement. The system current status and its evolution according to the planning of short and medium period are analysed. In the voltage stability evolution, static analysis techniques to draw the Q-V and P-V curves were used, as well as for determination of the system self-values and stability margins.

  7. La medicion en el proceso de investigacion cientifica: Evaluacion de validez de contenido y confiabilidad

    Directory of Open Access Journals (Sweden)

    Mendoza, J.

    2009-01-01

    Full Text Available In scientific research a relevant issue is measurement. Elements that form part of the measurement process are discussed. These elements are the following: the operationalization of variables, the relationship among theory and measurement, scales as measurement instruments, the meaning of the latent variable, validity and reliability as essential properties of measurement, also including content validity. Through the understanding of these elements, the relevance of the measurement process is established. Besides, the process of content validity and the estimation of reliability of a developed scale are described.

  8. EVALUACION FISICA MECANICA Y QUIMICA SOBRE CERRAMIENTOS UTILIZADOS POSTERIOR A UN INCENDIO

    Directory of Open Access Journals (Sweden)

    Valero, D.

    2015-06-01

    Full Text Available Esta investigación tuvo como objetivo evaluar el comportamiento ante el calor, de bloques de concreto aligerado y de poliestireno expandido de alta densidad, usados en losas y cerramientos en edificaciones prototipo. Se enmarca dentro de una investigación de campo, de carácter experimental y analítico-descriptivo, para lo cual se realizaron seis fases: recopilación de la información, caracterización físico-mecánica del revestimiento a utilizar, prototipos o módulos a ensayar, descripción de la sistemática del ensayo, caracterización físico-química de los materiales en estudio, y elaboración de recomendaciones de seguridad en caso de incendio. Se recopiló la información necesaria en materia de poliestireno expandido de alta densidad, y bloques aligerados con arcilla expandida mediante consultas de textos, manuales, normas, institutos, locales comerciales, publicaciones en internet, personal técnico capacitado con experiencia en el uso en obras de dichos materiales. La empresa especializada International Fire Services C.A. (IFSCA realizó el estudio requerido según normas. Entre los hallazgos relevantes se encontraron los altos valores de compuestos volátiles orgánicos durante la combustión del poliestireno expandido y la propiedad de los bloques aligerados con arcilla expandida como aislantes térmicos. This research is intended to evaluate the behavior of lightened concrete blocks and expanded high density polystyrene when exposed to heat, that are used in slabs and enclosures in prototype buildings. It is part of a field research, experimental and analytical-descriptive, for which six phases were carried out: collection of information, physical-mechanical character of coating to use, prototypes or modules to be tested, description of the scheme of testing, physical-chemical character of the materials under study and development of safety recommendations in case of fire characterization. The necessary information on expanded polystyrene high density, and lightweight blocks with expanded clay was collected through consultation of texts, manuals, standards, colleges, shops, online publications, trained personnel with experience using these materials. The specialized company International Fire Services C.A. (IFSCA conducted the study required under standards. Among the key findings there were the high levels of volatile organic compounds during combustion of expanded polystyrene and characteristics of the lightweight expanded clay blocks as thermal insulators were found.

  9. AVANCES EN LA EVALUACION DE LA ACTIVIDAD ANTIOXIDANTE DE DIEZ ESPECIES DE LA FAMILIA STERCULIACEAE

    Directory of Open Access Journals (Sweden)

    Victor Sotero

    2012-12-01

    Full Text Available En el trabajo, se presentan los resultados de evaluación de la actividad antioxidante de diez especies de la familia Sterculiaceae, y que comprende en algunos casos a la corteza, raíz y hojas. La determinación de la actividad antioxidante se realizó mediante secuestro de radicales libres del DPPH a 250000 μg/ml  y 3000 μg/ml. Los resultados indican que las mejores actividades en cortezas fueron T. obovatum con y T. subincanum, alcanzando 37,34 y 22,9% de inhibición, en hojas: H. swietenoides con 17,5%  de inhibición, en raíces  T. subincanum y T. obovatum con 68,3% y 13,81% de inhibición. Se pude deducir que en términos generales los compuestos fenólicos participan activamente en la actividad antioxidante. En cuanto a la concentración de polifenoles en cortezas, las mejores concentraciones la presentan H. swietenoides (43,72%,  T. obovatum (37,88 μg/g, T.subincanum (19,89 μg/g y T. speciosum (19,78 μg/g. En cuanto a la concentración de polifenoles en hojas se observa que H. swietenoides, S. frondosa, T.subincanum y T. speciosum, presentan concentraciones  entre 14,08 y 66-05 μg/g. La concentración de polifenoles en hojas para  T.subincanum,  S. frondosa, S. apeibophylia y T.obovatum, varió entre 10,80 a 59,92 μg/g.

  10. AVANCES EN LA EVALUACION DE LA ACTIVIDAD ANTIOXIDANTE DE DIEZ ESPECIES DE LA FAMILIA STERCULIACEAE

    Directory of Open Access Journals (Sweden)

    Victor Sotero

    2012-12-01

    Full Text Available En el trabajo, se presentan los resultados de evaluación de la actividad antioxidante de diez especies de la familia Sterculiaceae, y que comprende en algunos casos a la corteza, raíz y hojas. La determinación de la actividad antioxidante se realizó mediante secuestro de radicales libres del DPPH a 250000 μg/ml y 3000 μg/ml. Los resultados indican que las mejores actividades en cortezas fueron T. obovatum con y T. subincanum, alcanzando 37,34 y 22,9% de inhibición, en hojas: H. swietenoides con 17,5% de inhibición, en raíces T. subincanum y T. obovatum con 68,3% y 13,81% de inhibición. Se pude deducir que en términos generales los compuestos fenólicos participan activamente en la actividad antioxidante. En cuanto a la concentración de polifenoles en cortezas, las mejores concentraciones la presentan H. swietenoides (43,72%, T. obovatum (37,88 μg/g, T.subincanum (19,89 μg/g y T. speciosum (19,78 μg/g. En cuanto a la concentración de polifenoles en hojas se observa que H. swietenoides, S. frondosa, T.subincanum y T. speciosum, presentan concentraciones  entre 14,08 y 66-05 μg/g. La concentración de polifenoles en hojas para T.subincanum,  S. frondosa, S. apeibophylia y T.obovatum, varió entre 10,80 a 59,92 μg/g.

  11. Evaluacion ambiental estrategica para cuencas prioritarias de los Andes Colombianos: dilemas, desafios y necesidades

    National Research Council Canada - National Science Library

    Guevara, Giovany

    2014-01-01

    ... (la mas poblada del pais), sufren varios impactos antropogenicos relacionados con cambios en la cobertura vegetal y el uso y manejo del suelo, que comprometen su calidad y cantidad de agua, y el suministro de otros bienes...

  12. Valve monitoring and evaluation method; Un moderno diagnostico de valvulas y metodo de evaluacion

    Energy Technology Data Exchange (ETDEWEB)

    Kradepohl, P.

    2001-07-01

    With the valve monitoring and evaluation method presented here tools are available to optimise the operation of power plants furthermore. With ADAM a self-contained service conception for condition oriented maintenance of valves and actuators is at the operator's disposal. It includes efficient test and diagnosis systems for online and offline use as well as the affilated engineering procedures and the contribution to the condition evaluating process. Gathered knowledge about the functional behaviour of valves and actuators in detail leads to remarkably increased safety and availability combined with a lucrative reduction of maintenance efforts. (Author)

  13. Bilateral type emphysematous pyelonephritis: imaging evaluation; Pielonefritis enfisematosa bilateral tipo I. Evaluacion por la imagen

    Energy Technology Data Exchange (ETDEWEB)

    Salvador Cueto-Alvarez, L.; Piriz-Campos, E.; Ruiz-Garcia, T.; Roldan-Lora, F. [Hospital Universitario Virgen Macarena. Sevilla (Spain)

    2000-07-01

    Emphysematous pyelonephritis (EPN) is a serious infectious disease that occurs more frequently in diabetic patients. Radiological studies are indispensable for distinguishing between the two types since each is associated with a markedly different prognosis. We present a case of bilateral EPN diagnosed as type I on the basis of computed tomography findings, differentiating it from type II EPN, taking into account the prognostic value of this distinction. Type I EPN is characterized by the destruction of the renal parenchyma, a mottled or linear gas pattern and the absence of renal and perirenal fluid collection. Type II EPN is characterized by a loculated or bubbly gas pattern, the existence of fluid collection and less marked renal destruction. Type I is more aggressive and is associated with high rate of mortality. (Author) 7 refs.

  14. Evaluacion de los efectos del TLCUEM en el comercio bilateral y la inversion

    OpenAIRE

    Carlos Serrano Herrera; Alma Martinez Morales; Arnulfo Rodriguez Hernandez; Saide Aranzazu Salazar

    2015-01-01

    El tratado de libre comercio entre la UE y Mexico represento la eliminacion de aranceles para un grupo importante de bienes y de restricciones a los flujos de inversion. A quince años de la firma del acuerdo este documento presenta una estimacion de su impacto y analiza los beneficios ulteriores de una ampliacion que incluya productos agricolas hasta ahora no cubiertos

  15. EVALUACION DE LA EXPRESION ESCRITA EN ALUMNOS DE PEDAGOGIA EN CASTELLANO.

    OpenAIRE

    AMENGUAL MONARDES, ANA MARIA

    2002-01-01

    Conscientes de la necesidad de contar con datos objetivos acerca de los resultados del proceso de formación universitaria en distintos ámbitos, en la presente investigación se planteó como objetivo realizar un diagnóstico acerca de la habilidad que poseen 329p.

  16. Assessment of radiation induced apoptosis in lymphocyte subpopulations; Evaluacion de la apoptosis radioinducidas en subpoblaciones linfocitarias

    Energy Technology Data Exchange (ETDEWEB)

    Perez, M. del R.; Dubner, Diana L.; Michelin, Severino; Gisone, Pablo A. [Autoridad Regulatoria Nuclear, Buenos Aires (Argentina). Gerencia de Apoyo Cientifico. Lab. de Radiopatologia; Barboza, Marcos [Hospital de Clinicas Jose San Martin, Buenos AIres (Argentina). Servicio de Imunogenetica. Citometria de Flujo

    2001-07-01

    Apoptosis is the main form of radioinduced cell death. The lymphocytes, highly radiosensitive cells, dead in interphase by apoptosis even after very low doses. It has been demonstrated that the various peripheral blood lymphocyte (PBL) types display clear differences in their radiosensitivity . The purpose of this work was the characterization of radioinduced apoptosis in total PBL and in helper and cytotoxic T-lymphocytes. Blood samples were irradiated with a gamma source with doses between 0,5 and 4 Gy, dose-rate 0,8 Gy/min. Apoptosis was evaluated at different times post irradiation (p.i.) by conventional and fluorescence microscopy. Fragmentation of DNA was determined by electrophoresis in agarose gels. Apoptosis was quantified flow cytometrically by light scatter gram and determining the percent of fixed cells stained with propidium iodide that exhibited a reduced DNA content. FITC-labelled Annexin V was used to bind cell membrane phosphatidylserine which is aberrantly exposed during apoptosis. As an additional approach for the evaluation of apoptosis we measured the mitochondrial transmembrane potential by using the cationic dye 3,3 dihexyl oxacarbocyanine iodide (DiOC{sub 6}). Chromatin condensation and apoptotic bodies were microscopically observed and internucleosomal fragmentation was revealed in electrophoresis gels. Apoptotic cell fraction displayed a dose-dependent increase with a higher radiosensitivity for CD8 T-lymphocytes. These results suggest that quantification of PBL apoptosis could be an useful biological indicator in accidental overexposures and could also provide an useful predictive test for individual radiosensitivity. The higher radiosensitivity revealed by CD8 subset could allow a better discrimination of this phenomenon. (author)

  17. Patterns of probabilistic evaluation of the maintenance; Patrones de Evaluacion Probabilista del Mantenimiento

    Energy Technology Data Exchange (ETDEWEB)

    Torres V, A.; Rivero O, J.J. [Dpto. Ingenieria Nuclear, Instituto Superior de Tecnologias y Ciencias Aplicadas, Ave. Salvador Allende y Luaces, Quinta de los Molinos, Plaza, Ciudad Habana (Cuba)]. e-mail: atorres@fctn.isctn.edu.cu

    2004-07-01

    The Boolean equation represented by the minimum sets of court at level of a system or of all one Probabilistic safety analysis (APS) it has been used for to evaluate the output configurations of service of teams during the exploitation. It has been carried out through applications of APS for the optimization of operational regimes. The obtaining of such boolean equations as demands of a process of high mathematical complexity for what exhaustive studies are required, even for the application of their results. The important advantages for the maintenance that they obtain of these applications they require the development of methodologies that bring near these optimization methods to the systems of management of the maintenance, and not facilitate their use for a personnel specialized in the probabilistic topics. The article presents a methodology for the preparation, solution and utilization of the results of the fault tree leaving of technological outlines. This algorithm has been automated through the MOSEG code Win to Ver 1.0 (Author)

  18. EFECTOS DE LA INFLACION Y LA DEVALUACION EN LA EVALUACION DE FLUJOS DE INVERSION

    Directory of Open Access Journals (Sweden)

    Roberto Solé Madrigal

    2013-03-01

    Full Text Available Siendo hoy en día tanto la inflación como la devaluación de las monedas una constante en todas las economías mundiales, y las “potencias” o economías desarrolladas no se escapan de ello aún cuando las tasas sean “de un dígito”, es importante poder tomar en cuenta sus efectos a lo largo del tiempo en un proyecto para su evaluación e impacto en sus métricas de evaluación tradicionalmente utilizadas: Valor Actual Neto (VAN y Tasa Interna de Retorno (TIR.

  19. Evaluacion de un conjugado antirrabico por titulacion en diferentes microscopios fluorescentes

    Directory of Open Access Journals (Sweden)

    O. P. Larghi

    1986-02-01

    Full Text Available En cinco laboratorios se tituló una partida de conjugado antirrábico para inmunofluoresCencia con microscopios de tres marcas distintas, equipados con diferentes accesorios. Los títulos obtenidos variaron entre < 1:4 y 1:64, dependiendo de los accesorios utilizados. Estos resultados ponen de relieve la necesidad de titular los conjugados en cada laboratorio. Se mencionam los inconvenientes que pueden ocasionar la distribución del reactivo diluido de acuerdo con el título obtenido por el productor, o mezclado con suspensiones de cerebro de ratones normales e infectados con virus rábico.

  20. Assessment and mitigation of liquefaction; Evaluacion y mitigacion de la licuefaccion

    Energy Technology Data Exchange (ETDEWEB)

    Czelada, J. A.; Melentijevic, S.

    2014-07-01

    The simplified empirical procedure in its original form presented in Youd et al (2001) and some further developments given in Idriss and Boulanger (2006) for evaluating liquefaction resistance of soils is presented in this paper only for the criteria based on standard penetration test (SPT). Methods for estimating the ground improvement techniques by stone columns and dynamics compaction are presented. For stone columns Priebe method (1995) and homogenized method (equivalent parameters) are present. for dynamic compaction methods proposed by Recomendacion Geotecnica para las Obras Maritimas y/o Porturaria - ROM 0.5-05 (2005) and Nashed et al. (2009) are described. These analysis methods for each ground improvement technique are compared in two different case histories showing similar results in each one. (Author)

  1. La Evaluacion del Desarrollo de los Alumnos Preescolares (Assessing the Development of Preschoolers). ERIC Digest.

    Science.gov (United States)

    Katz, Lilian G.

    To help parents address those aspects of their child's development which may need special encouragement, support, or intervention, this digest delineates 11 categories of behavior for assessment. Parents should not be alarmed if their children are having difficulty in only a few categories, and they should not judge their children's permanent…

  2. Evaluacion tecnologica de dispositivos integrados de naturacion y captacion pluvial en la vivienda de Mexico

    National Research Council Canada - National Science Library

    Cordova Canela, Fernando; Lopez Elizalde, Edna Cecilia

    2013-01-01

    ... a las particularidades que plantea la gestion del agua y de las areas verdes en la vivienda mexicana. Para 2010 el 77% de la poblacion nacional vive en localidades urbanas, porcentaje de poblacion superior al 71% registrado en 1990 [1], y la tendencia general es que las ciudades se conviertan cada vez mas en centro de atraccion y crecimiento de la po...

  3. Evaluacion del nivel de aceptabilidad para las variedades Italia, Napoleon y Redglobe en el Mercado Espanol

    National Research Council Canada - National Science Library

    Piva, Cesar Rosso; Garcia, Jose Luiz Lopez; Morgan, Wyn

    2008-01-01

    Con el objetivo de evaluar el nivel de aceptabilidad para tres variedades tardias de uva de mesa, la Unidad de Comercializacion y Divulgacion Agraria del Departamento de Economia y Ciencias Sociales Agrarias (E.T.S.I.Agronomos...

  4. Evaluacion de competencias docentes para la mejora de la calidad de la Educacion Superior en Mexico

    OpenAIRE

    Carrillo, Abraham Madero; Unilasalle, Canoas, RS; Valenzuela, Blanca

    2012-01-01

    El presente escrito es una aportación para la mejora de la calidad de la educación superior en México, en específico para el área de la calidad de la docencia universitaria. Se definen conceptos que son fundamentales al momento de abordar el tema de la calidad de la educación superior, se mencionaran los temas de calidad, evaluación, competencias, docencia e instituciones de educación superior en México, El trabajo se enmarca en el contexto particular de la universidad de sonora, se describe ...

  5. Evaluacion de las propiedades mecanicas de una mezcla densa en caliente modificada con asfaltita

    National Research Council Canada - National Science Library

    Rondon Quintana, Hugo Alexander; Reyes Lizcano, Fredy Alberto

    2012-01-01

    El trabajo evaluo en laboratorio la resistencia mecanica bajo carga monotonica, el modulo resiliente y la resistencia a la deformacion permanente que experimenta una mezcla asfaltica cuando se modifica con una asfaltita...

  6. USO DEL FEEDBACK COMO ESTRATEGIA DE EVALUACION: APORTES DESDE UN ENFOQUE SOCIOCONSTRUCTIVISTA

    Directory of Open Access Journals (Sweden)

    Flor Jiménez Segura

    2015-01-01

    Full Text Available El presente documento analiza el uso del "feedback" como una estrategia de evaluación desde una perspectiva constructivista sociocultural y situada, utilizado por un grupo de docentes de la educación superior en el Practicum. Se conceptualiza el feedback como una ayuda potencial del profesorado hacia estudiantado y que se distribuye a lo largo del proceso educativo en las situaciones de evaluación que se realizan; donde la persona docente puede ayudar en el ajuste y adaptación que experimenta cada una de las personas en dicho proceso. Esta investigación sirve como insumo para las personas profesionales en Orientación que se desempeñan como docentes y que pueden utilizar el feedback como una estrategia de evaluación. Algunos de los resultados de la investigación identifican su utilización en situaciones evaluativas por parte del personal docente del Practicum en el análisis institucional, la planificación, la programación, la intervención y su respectiva evaluación, la tutoría o seminario y la defensa ante un tribunal examinador de la memoria o carpeta de aprendizaje que realiza el estudiantado.

  7. Desde la distincion a la configuracion: complejidad, evaluacion y aprendizaje desde la vision relacional

    National Research Council Canada - National Science Library

    Lavanderos Gallardo, Leonardo; Oliva Figueroa, Ivan

    2012-01-01

    ..., teoria relacional, territorialidad, configuraciones. ABSTRACT Given the current conditions attached to the speed at which changes occur globally, what we call knowledge has begun to misrepresent the condition of certainty and determinateness in which we were conservatively formed. This disfiguring education has made an impact on education making tr...

  8. Caracteristicas psicometricas de la escala BRIEF para la evaluacion de funciones ejecutivas en poblacion clinica espanola

    National Research Council Canada - National Science Library

    2014-01-01

    .... Sin embargo, su aplicacion esta limitada a poblacion de habla inglesa. Metodo: en este estudio se analizan los primeros resultados procedentes de su aplicacion a una muestra clinica espanola, formada por 125 participantes de 5 a 18 anos...

  9. Vision y olfato en las evaluaciones de atractivo que hacen hombres homosexuales

    National Research Council Canada - National Science Library

    Jimenez Orvananos, Jose Maria; Camacho Delgado, Irvin Antonio; Alcazar Gaspar, Rocio; Palomar, Joaquina

    2013-01-01

    ... de pareja que hacen las personas homosexuales. This suggests that the homosexual men who participated as evaluators were able to distinguish, without being conscious of it, the sexual orientation of the men who wore the shirts, parting from their...

  10. Composicion quimica y evaluacion microbiologica de salchichas de pollo y codorniz

    National Research Council Canada - National Science Library

    Cori, Marta Elena; De Basilio, Vasco; Figueroa-Ruiz, Rosana; Rivas, Nilo; Martinez, Shimazu; Rodriguez, Iraima

    2014-01-01

    ...) macho en la elaboracion de salchichas, se formularon y elaboraron estos productos carnicos sustituyendo la carne de pierna y muslo de pollo por carne deshuesada mecanicamente (CDM) de codorniz en 0; 10; 20; 30 y 40...

  11. Conceptualizacion y evaluacion de la impulsividad en adolescentes: una revision sistematica

    National Research Council Canada - National Science Library

    Riano-Hernandez, Diana; Guillen Riquelme, Alejandro; Buela-Casal, Gualberto

    2015-01-01

    .... Se realizo la revision sistematica sobre impulsividad en adolescentes, con el objetivo de identificar las diferentes definiciones, analizar las medidas que son usadas para evaluarla y puntualizar...

  12. DISEÑO, EVALUACION E IMPLEMENTACION DE UN PROGRAMA DE EDUCACION PARA LA NO VIOLENCIA

    OpenAIRE

    ARON S., ANA MARIA

    2012-01-01

    El problema que aborda este proyecto es el de la violencia que es uno de los problemas psicosociales que más incide en la disminución de la calidad de vida de la comunidad, representando un alto costo social. La violencia contra los niños y la violencia intrafamiliar en general, además de su costo social representa importantes costos económicos, para el sector laboral (ausentismo, licencias, baja en la productividad); para el sector salud (costos directos en la atención de víctimas y sus f...

  13. EVALUACION ERGONOMICA Y PSICOSOCIAL DE PUESTOS DE TRABAJO CON PANTALLA DE VISUALIZACION DE DATOS

    OpenAIRE

    Rosique-Molina, Vicente

    2012-01-01

    El presente trabajo se realiza como Trabajo Fin del Máster (TFM) de Prevención de Riesgos Laborales, Especialidad de Ergonomía y Psicosociología, y pretende plasmar los conocimientos teóricos adquiridos durante el curso realizando una Evaluación Ergonómica y Psicosocial de puestos de trabajo con Pantallas de Visualización de Datos (PVD), y demostrar que los métodos utilizados, el del Instituto Nacional de Seguridad e Higiene en el Trabajo (INSHT) para la evaluación ergonómica y el CoPsoQ I...

  14. Modelo conceptual e instrumental de sostenibilidad organizacional a partir de la evaluacion del tejido social empresarial

    OpenAIRE

    Diana Maria Garzon R.; Carmen Alicia Amaya R.; Óscar Castellanos D.

    2004-01-01

    Las organizaciones actuales enfrentan condiciones cada vez más cambiantes que les exigen capacidad de adaptarse y mantenerse en el tiempo. El presente artículo propone un modelo conceptual e instrumental de sostenibilidad, que se fundamenta en diferentes concepciones y enfoques, con los cuales se ha abordado la realidad del ser humano en las organizaciones, a partir de la introducción del concepto de tejido social empresarial. La investigación de campo se realizó en un grupo de empresas del s...

  15. Simulacion y evaluacion de una propuesta de implementacion del minimo vital de agua potable en Colombia

    National Research Council Canada - National Science Library

    Mendez Sayago, Jhon Alexander; Mendez Sayago, Johanna Mildred

    2011-01-01

    ... de los abonados de los estratos 5 y 6. La simulacion exigio la estimacion de funciones de demanda de agua, para determinar el impacto sobre el consumo de agua potable en los estratos 5 y 6, generados por los incrementos en el precio...

  16. Utilizacion de enzimas fibroliticas en cabras lecheras. Evaluacion de su actividad y caracteristicas fermentativas in vitro

    OpenAIRE

    González-García, Eliel

    2004-01-01

    A sequence of in vivo and in vitro experiences were carried out in order to evaluate the effects of supplementing dairy goat diets with fibrolytic enzymes. In the lactation experience (Exp.1) the performance of the main figures of feed intake (DMI), milk production (MP) and milk composition (MC), and the change of body weight (BW) and body condition score (BCS) were studied by a ‘Crossover’ experiment design with 24 Murciano-Granadinas dairy goats in mid lactation, randomly allocated in two t...

  17. Evaluacion del propoleo como promotor de crecimiento en la carpa comun

    National Research Council Canada - National Science Library

    Uczay, Juliano; Lazzari, Rafael; Pianesso, Dirleise; Juliana Adorian, Taida; Ines Mombach, Patricia; Decarli, Antonio, Jr

    2011-01-01

    ...). Despues del periodo experimental se evaluaron los parametros: peso promedio, longitud total y longitud patron, tasa de crecimiento especifica, factor de condicion, y ganancia en peso relativo...

  18. Evaluacion de un portafolio de inversion institucional: el caso de los fondos de pensiones en Mexico

    Directory of Open Access Journals (Sweden)

    Humberto Banda

    2009-07-01

    Full Text Available The stock market in Mexico has changed in recent years. In this context, pension funds have played an important role. A good performance on pension funds, translates on stability for its members and also for the savings of a country. This paper assesses the performance of Mexican pension funds societies (SIEFORES by using Sharpe, Treynor and Jensen ratios.

  19. Evaluacion termica, mecanica y electrica de materiales compuestos cordierita-mullita

    Directory of Open Access Journals (Sweden)

    M.A. Camerucci

    2000-10-01

    Full Text Available Commercially available cordierite and mullite powders were used to obtain cordierite and cordierite-30wt% mullite materials by attrition milling, uniaxial pressing and sintering. Cordierite powders were the coarse (D50 = 1.82 mum, medium (D50 = 0.9 mum and fine (D50 = 0.45 mum single granulometric fractions and binary mixtures of them. Mullite powder employed in composites was the 7 h-attrition milled one (D50 = 1.3 mum. Hardness (H V and fracture toughness (K IC were measured by Vickers indentation techniques. Composites showed higher H V and K IC than cordierite matrices. In both materials, H V and K IC diminish with the increasing porosity. Dielectric constant (epsilon and losses (tan delta were determined at 1 MHz. An increase in epsilon and tan delta values was registered when mullite was present in composites with respect to cordierite material. Higher the porosity, epsilon was lower and tan delta increased. The thermal expansion coefficients (alpha were determined up to 1000 °C resulting the alpha of the composite close to that of the silicon.

  20. Las opciones reales como metodologia alternativa en la evaluacion de proyectos de inversion

    National Research Council Canada - National Science Library

    Tamara Ayus, Armando Lenin; Aristizabal Velasquez, Raul Enrique

    2012-01-01

    Este trabajo busca ampliar la aplicabilidad de la metodologia de valoracion de proyectos de inversion por medio de opciones reales como un elemento fundamental al momento de tomar una decision de si...

  1. Estandarizacion y evaluacion de un enzimoinmunoensayo para diagnostico y seroepidemiologia de triquinosis humana

    Directory of Open Access Journals (Sweden)

    Emílio Coltorti

    1987-12-01

    Full Text Available Se estandarizó un enzimoinmunoensayo (EIE en fase sólida en el que se empleó un antígeno soluble total de T. spiralis y una dilución única de suero, y se evaluó la capacidad del sistema para detectar anticuerpos totales antitriquina con fines diagnósticos y seroepidemiológicos. Las curvas dosis respuesta mostraron que trabajando con una dilución de suero de 1:100 se obtenía una buena diferenciación entre sueros de indivíduos no infectados y pacientes de triquinosis con baja concentración de anticuerpos circulantes y la respuesta fue lineal entre valores de 0.15 y 0.64 unidades de densidad óptica (DO. El estúdio de 720 sueros de población general no infectada revelo una X k = 0.07 y una S = 0.03 unidades de DO. El 98,61% de esta población presentó valores de DO X k + 3S y X k + 4S y < X k + 5S. Se empleó un valor de DO = X k + 5S como nivel diagnóstico para estudiar 4 brotes de triquinosis humana, 80 sueros de pacientes de triquinosis con diferentes títulos en inmunofluorescencia indirecta (IFI y 20 sueros de pacientes de hidatidosis. El EIE propuesto permitió diferenciar en forma confiable y eficiente población infectada de no infectada y tuvo una buena correlación con la IFI. Todos los sueros de pacientes hidatídicos presentaron valores de DO < X k + 4S.

  2. Evaluacion de las funciones ejecutivas en ancianos con enfermedades cronicas degenerativa

    National Research Council Canada - National Science Library

    Brito, Ivone Lucia; Coutinho Areosa, Silvia; Fernandes Lopes, Regina Maria; de Lima Argimon, Irani I

    2012-01-01

    .... Esta pesquisa foi elaborada com o objetivo de verificar a existencia de deficit no desempenho das Funcoes Executivas em idosos acometidos com doencas cronico-degenerativas atraves do Teste Wisconsin...

  3. Formation and evaluation of artificial patinas over copper; Formacion y evaluacion de patinas artificiales sobre cobre

    Energy Technology Data Exchange (ETDEWEB)

    Rosales, B.M.; Moriena, G. [DEICOR, CITEFA, Zufriategui 4380, (1603) Villa Martelli, Argentina PAX 54 1 709-3210 Rosa Vera Universidad Catolica de Valparaiso, Inst. de Quimica, Casilla 4059, Valparaiso, Chile FAX 56 32 23-9254 (Chile)

    1998-12-31

    The unprecise characteristic of the environmental parameters determines passive variable properties in the formed corrosion products out in the open. They were required at least three years by essaying in the atmospheres where the patina is naturally formed for a long term information disposition about its protector power, its stabilization velocity and its attack morphology suffered by the metal. In patinas formed in laboratory on the contrary, to get morphology and a defined chemical composition, allowing its accelerated formation and an uniform attack, with a reproducible and controllable metal corrosion velocity. The protective properties of the patinas formed on copper as like artificial way (blue, green, violet, and maroon) as natural way out in the open which were evaluated by means of different characterization techniques. It was applied potential kinetics polarizations, scanning electron microscopy (Sem) and surface analysis EDAX. The corrosion products composition was determined by X-ray diffraction and W spectroscopy. Starting from obtained results through different techniques it was concluded that the green patinas, as artificial as the naturally formed, as well as those of the best protector power. the others three ones present different failures as less adherence, high porosity and basic metal exfoliation. (Author)

  4. Gestion, evaluacion y calidad en la diversificacion de la Educacion Superior en America Latina

    Directory of Open Access Journals (Sweden)

    Sergio Martínez Romo

    2007-12-01

    Full Text Available La participación de la Sociedad Académica y sus grupos constituyentes como 'tribus' o grupos de interés en función del conocimiento (Martínez Romo, 1992, 2005 en la gestión, diseño y operación de la política pública en educación superior y la evaluación y acreditación de la calidad del posgrado y en el entrenamiento en investigación, por medio de agencias gubernamentales em México (Martínez Romo y Reséndiz, 2007 logra influir en el diseño de lãs políticas públicas y la gestión en educación superior, y aparentemente, mejores resultados al introducir explícitamente el valor conocimiento -y SUS aplicaciones- a través de los grupos o tribus -diría Becher (1989- en La gestión y los procesos de evaluación en el posgrado. Los datos obtenidos señalan que este valor parece dar a los indicadores y estándares de gestión y calidad de tipo gerencial, un sentido más trascendente que la eficacia y eficiencia esperada tradicionalmente en los modelos privado - empresariales o de servicio público en el sentido tradicional, de la noción de estado de bienestar (que en ocasiones situa la noción en términos de uso privado de bienes públicos. La investigación reportada pone en perspectiva algunas características significativas en la constitución de la Sociedad Académica en México, La distingue del Estado y de la Sociedad Civil (Martínez Romo, 1992, y caracteriza y documenta su participación en la hechura y gestión de lãs políticas para la educación superior y a través de ésta última, en la producción, promoción y difusión de la Ciencia y la Tecnología. Acciones todas ellas de contribución para el desarrollo, en un entorno de diversificación e internacionalización de la educación superior y sus instituciones.

  5. DISEÑO, SINTESIS Y EVALUACION ANTITUMORAL DE AMINOISOQUINOLIN Y FENANTRIDINQUINONAS

    OpenAIRE

    IBACACHE ROJAS ; JUANA ANDREA

    2010-01-01

    Fragmentos quinónicos forman parte de muchas drogas tales como antraciclinas, daunorubicina, doxorubicina y mitomicinas los cuales se emplean clínicamente en terapia de canceres sólidos. En la búsqueda de nuevas quin:Onas con potencial actividad antitumoral, dos series de aminoquinonas se diseñaron y sintetizaron a través de un procedimiento que involucra una etapa inicial one-pot para acceder a las quinonas N-heterociclicas, seguida de aminacion tiucleofilica de las quinona...

  6. Evaluations of Molecular Nuclear Medicine in pediatric urgencies; Evaluaciones de Medicina Nuclear Molecular en urgencias pediatricas

    Energy Technology Data Exchange (ETDEWEB)

    Martinez-Duncker R, C. [Departamento de Medicina Nuclear Molecular, Hospital Infantil de Mexico, Mexico D.F. (Mexico)

    2000-07-01

    Several diagnostic procedures of Molecular Nuclear Medicine are considered in first choice in clinical evaluation of patients with different illnesses. So, the gammagraphy is the diagnostic form more sensitive to detect alterations of the perfusion on organs and systems such as bones, heart, brain, lungs or kidneys. Also is possible to identify, localize, evaluate the activity of inflammatory processes such as cellulitis, arthritis, osteomyelitis, the abscesses and several primary or metastatic tumours before each other diagnostic technique. In this work is treated about the importance of treatments with radioactive materials have been an important reappearance in last years since with the present capacity to localize specifically intracellular processes (for example, synthesis of DNA) new gateways are opened to research which in coming years would be of great utility. (Author)

  7. EVALUACION DE LA NATURALEZA PRECURSORA DE MELANOMA DE LOS NEVOS MELANOCITICOS CUTANEOS

    OpenAIRE

    URIBE GONZALEZ ; PABLO FRANCISCO

    2004-01-01

    El melanoma, resultado de la transformación maligna de los melanocitos, corresponde a aproximadamente al 3% de los cánceres en los países desarrollados y su incidencia ha aumentado. Existe un número de lesiones melanocíticas claramente defin idas que incluyen una variedad de nevos comunes, nevos atípicos, melanoma in situ y melanoma invasor, presentando este último una fase de crecimiento radial y posteriormente vertical (Clark et al., 19H4). Una de las lesiones precursoras del...

  8. Dose evaluation in diagnostic for computerized tomography; Evaluacion de dosis en diagnostico por tomografia computarizada

    Energy Technology Data Exchange (ETDEWEB)

    Flores, W.; Borges, J.C.; Mota, H. [Universidad Federal de Rio de Janeiro, PEN/COPPE/UFRJ. Caixa Postal 68509. 21945-970 Rio de Janeiro (Brazil)

    1998-12-31

    The patients which are subjected to computerized tomography tests are exposed to relatively high doses given as result doses on organs that are not matter to test. It was realized a dose levels raising in patients subjected to tests by T C, utilizing to measure this magnitude, TLD-100 thermoluminescent dosemeters which were put directly on the patient, in eye regions, thyroid, breast and navel; founding doses fluctuating between 29.10-49.39 mGy in organs examined and dose values between 0.21-29.10 mGy for organs that no matter to test. The applications of ionizing radiations in medicine do not have dose limits, but paying attention to the radiological protection optimization principle, it is recommended the use of clothes to anti-rays protection for zones not examined, getting with this to reduce the level doses as low as possible, without this to diminish the test quality. (Author)

  9. Evaluacion comparativa "in vivo" de tres técnicas de Apexificación

    OpenAIRE

    Evjanian, Gladys Irene

    2014-01-01

    Para realizar este estudio eminentemente clínico, se seleccionaron 21 dientes pertenecientes a pacientes niños y adolescentes que presentaban cuadros clínicos identificados como "necrosis pulpar en diente permanente con ápice inmaduro". Se distribuyeron aleatoriamente en tres grupos (A, B Y C) de siete dientes cada uno, para experimentar tres técnicas de apicoformación que sólo se diferenciaban entre sí en el tipo de antisepsia tópica empleada en el tratamiento. En cada grupo se evaluó el efe...

  10. La evaluacion y la universidad como objeto de estudio Evaluation and the university as research objects

    Directory of Open Access Journals (Sweden)

    Augusto Perez Lindo

    2007-12-01

    Full Text Available Nos proponemos en este artículo analizar la evolución de los estudios sobre la educación superior y las relaciones con la evaluación institucional universitaria. Interpretamos que la aparición de los estudios sobre la educación superior están relacionados con la emergencia de una sociedad que se produce a través del conocimiento.In the present article we present an analysis of the evolution of the studies on higher education and their relation with higher education institutional evaluation. We interpret that studies on higher education begin to appear along with the emergence of a society that is produced through knowledge.

  11. Aprendizaje autorregulado, metas académicas y rendimiento en evaluaciones de estudiantes universitarios

    Directory of Open Access Journals (Sweden)

    Marcela Valencia Serrano

    2013-01-01

    Full Text Available Objetivo. Explorar la relación entre aprendizaje autorregulado, metas académicas y rendimiento en una evaluación académica de ocho estudiantes universitarias. Método. Se realizó una entrevista semi- estructurada, una observación directa de una sesión de estudio y protocolos verbales durante y después de la sesión. Resultados. En relación con las metas académicas, se encontró que tres estudiantes tuvieron u na única orientación a metas de dominio por aproximación, mientras que cinco orien taron a múltiples metas académicas. Respecto al aprendizaje autorregulado, se encontraron estudiantes con b ajos y altos niveles. En la relación entre aprendizaje autorregulado, metas académicas y rendimiento en la evaluación fue posible identificar tres grupos de estudiantes: (a altos niveles de autorregulación y orientación única a metas de dominio por aproximación, (b bajos niveles de autorregulación y múltipl e orientación a metas de dominio y ejecución en tendencias de aproximación y evitación, y (c variaciones en el nivel de autorregulación con múltiple orientación a metas académicas. Todas las estudiantes obtuvieron cali ficaciones aprobatorias en la evaluación, independientemente de su nivel de autorregulación y de la orientaci ón a metas académicas. Conclusión. El abordaje procedimental del aprendizaje autorregulado, en función de las metas académicas, permitió obtener información relevante para la comprensión de este proceso, por lo que se recomienda seguir realizando este tipo de estudios para dar cuenta de los diferentes fu ncionamientos de las estudiantes universitarias en tiempo real, de sus variaciones y relación con otros aspectos motivacionales involucrados en sus procesos de aprendizaje.

  12. CRECIMIENTO Y DISTRIBUCION: UNA EVALUACION DE LA HIPÓTESIS DE KUZNETS

    Directory of Open Access Journals (Sweden)

    Lina Ochoa C

    2003-06-01

    Full Text Available Durante muchos años la hipótesis de Kuznets ha sido el paradigma para el estudio de la dinámica distributiva de largo plazo. No obstante, la experiencia de muchos países en décadas recientes sugiere que la visión de Kuznets debe reevaluarse. Este trabajo intenta presentar algunos elementos teóricos que se han introducido en la bibliografía sobre este tema, así como otros que no han sido muy estudiados pero que igualmente son pertinentes para mejorar el análisis de este problema. De esta forma se puede entender que el escenario distributivo analizado por Kuznets es solo uno entre muchos posibles.

  13. Evaluacion de la calidad del agua del rio Opia mediante macroinvertebrados acuaticos y parametros fisicoquimicos

    National Research Council Canada - National Science Library

    Forero-Cespedes, Adriana Marcela; Reinoso-Florez, Gladys; Gutierrez, Carolina

    2013-01-01

    ... bentica y variables fisicoquimicas. Para esto, se seleccionaron 14 estaciones en donde se recolecto un total de 11573 macroinvertebrados acuaticos agrupados en 4 phyla, 7 clases, 16 ordenes, 50 familias y 98 generos...

  14. Evaluacion de las politicas de atraccion de IED: el caso del sector electrico centroamericano

    National Research Council Canada - National Science Library

    Paz Antolin, Maria Jose; Sanabria Martin, Antonio

    2007-01-01

    .... Si la deslocalizacion de la produccion industrial ya venia siendo un fenomeno significativo desde practicamente el final de la Segunda Guerra Mundial, no ocurria lo mismo en el caso del sector servicios...

  15. Evaluacion del componente central y periferico de fatiga muscular en pacientes neuropaticos y miopaticos

    OpenAIRE

    Cohen, L. G.; Panizza, Marcela E.; Sanz, Olga P.; Schutz, Carlos G.; Rey, R.

    1983-01-01

    Utilizando un método de cuantificación del electromiograma, se investigaron parte de los mecanismos centrales y periféricos responsables de la fatiga muscular en enfermos crónicamente denervados y en pacientes con compromiso muscular primitivo. Se observó en los denervados que los mecanismos de fatiga muscular, no difieren mayormente de los observados en el grupo de sujetos sanos, por el contrario, en los miopáticos a más del componente central, existen otros de orden periférico, tales como l...

  16. Evaluacion del componente central y periferico de fatiga muscular en pacientes neuropaticos y miopaticos

    Directory of Open Access Journals (Sweden)

    L. G. Cohen

    1983-09-01

    Full Text Available Utilizando un método de cuantificación del electromiograma, se investigaron parte de los mecanismos centrales y periféricos responsables de la fatiga muscular en enfermos crónicamente denervados y en pacientes con compromiso muscular primitivo. Se observó en los denervados que los mecanismos de fatiga muscular, no difieren mayormente de los observados en el grupo de sujetos sanos, por el contrario, en los miopáticos a más del componente central, existen otros de orden periférico, tales como la pérdida de unidades motoras funcionantes durante el esfuerzo y el bloqueo temporario de la transmisión neuromuscular, que contribuye al desarrollo de la fatiga.

  17. EVALUACION DEL DESARROLLO DE LA METACOGNICION EN ALUMNOS DE PRIMER CICLO BASICO

    OpenAIRE

    SOTO YEFI, PATRICIA FABIOLA

    2012-01-01

    En esta investigación se dará a conocer el proceso de evaluación del desarrollo de la metacognición, en un curso de estudiantes de 2° año básico de un colegio de la comuna de Osorno, desde la perspectiva de los propios participantes, esto es, los alumnos y su profesora. Esta investigación, postula que el desarrollo de la metacognición, puede ser incentivado en alumnos de Primer Ciclo Básico, a través de la enseñanza del conocimiento y control metacognitivos, lo que puede expresarse en apre...

  18. Evaluacion ambiental estrategica para cuencas prioritarias de los Andes Colombianos: dilemas, desafios y necesidades

    National Research Council Canada - National Science Library

    Guevara, Giovany

    2014-01-01

    ... y servicios ecosistemicos para el futuro. Es necesario que el gobierno colombiano formule nuevas y actualice las politicas, planes o programas, en consulta y cooperacion constante con otras instituciones, autoridades civiles y ambientales...

  19. EVALUACION DEL EFECTO INMUNOESTIMULANTE DE COMPUESTOS AISLADOS DE ESPECIES DEL GENERO HELIOTROPIUM EN SALMONIDOS

    OpenAIRE

    VALENZUELA MONTENEGRO, BEATRIZ DE LOURDES

    2012-01-01

    Uno de los mayores problemas en las pisciculturas durante estas últimas décadas ha sido el aumento en el número de enfermedades ocasionadas principalmente por patógenos intracelulares y que aún no cuenta con tratamientos efectivos que se traduzcan en un control adecuado. Debido a esto han surgido una serie de estrategias para controlar las enfermedades infecciosas en la acuicultura entre otras cambios en la nutrición, desarrollo de vacunas y el uso de inmunoestimulantes. A la fecha, las...

  20. Evaluacion no lineal de dos postes diferentes.(poste colado, poste prefabricado)

    National Research Council Canada - National Science Library

    Villaraga Ossa, Junes Abdul; Lopera Builes, Patricia; Latorre Correa, Federico

    2012-01-01

    Introduccion: los dientes tratados endodoncicamente que van a ser rehabilitados con coronas y que han perdido parte de su estructura dental, necesitan de un poste prefabricado o colado para que ayude...

  1. Evaluacion del contenido de aminoacidos en guabina , bloch 1794, capturadas en el embalse hipereutrofico de Suata

    National Research Council Canada - National Science Library

    Acuna, Julymar; Gonzalez, Ernesto Jose; de los Angeles Alvarez, Maria; Penaherrera, Carlos; Barrero, Marinela

    2011-01-01

    ... esenciales para humanos, tales como, lisina, metionina, cisteina, treonina y triptofano [23, 29, 32]. Los productos pesqueros son particularmente buena fuente de lisina, que se encuentra en muy bajas proporciones en los cereales, el producto alimenticio mas importante en el mundo. Una reduccion en el suministro de lisina en la dieta puede conducir a p...

  2. Modelo conceptual e instrumental de sostenibilidad organizacional a partir de la evaluacion del tejido social empresarial

    Directory of Open Access Journals (Sweden)

    Diana Maria Garzon R.

    2004-12-01

    Full Text Available Las organizaciones actuales enfrentan condiciones cada vez más cambiantes que les exigen capacidad de adaptarse y mantenerse en el tiempo. El presente artículo propone un modelo conceptual e instrumental de sostenibilidad, que se fundamenta en diferentes concepciones y enfoques, con los cuales se ha abordado la realidad del ser humano en las organizaciones, a partir de la introducción del concepto de tejido social empresarial. La investigación de campo se realizó en un grupo de empresas del sector biotecnológico colombiano. Se planteó una nueva perspectiva en la administración del factor humano enfocada en la sostenibilidad organizacional, y centrada en el análisis de la realidad que experimentan las personas en las organizaciones de hoy.

  3. EVALUACION DEL PROCESO DE SECADO POR AIRE CALIENTE DE MANZANA (Pyrus malus) VARIEDAD SAN ANTONIO

    OpenAIRE

    Castillo Martinez, Williams Esteward; Universidad Nacional del Santa; Manayay Sanchez, Damian; Universidad Le Cordon Bleu; Dominguez Castañeda, Jorge Marino; Universidad Nacional del Santa; Palacios Ambrocio, Andrianov Lenin; Universidad Nacional del Santa; Quezada Berru, Soledad Mercedes; Universidad Nacional del Santa; Gonzales Capcha, John Kelby; Universidad Nacional del Santa

    2015-01-01

    El secado prolonga la vida útil de los alimentos, conservando su valor nutritivo, debido a la eliminación del agua del producto. En esta investigacion se deshidrataron láminas de manzana de 2 mm de grosor y 6,6 cm de diámetro con por aire caliente a temperaturas de 65, 75 y 95°C, para determinar las cinéticas de pardeamiento, degradacion de Vitamina C, perdida de humedad y actividad de agua.   De las cinéticas del proceso secado evaluadas, muestran que el mejor proceso de secado es a temperat...

  4. Evaluacion fisica de la calidad externa e interna del huevo de pavas nativas

    National Research Council Canada - National Science Library

    Juarez-Caratachea, Aureliano; Gutierrez-Vazquez, Ernestina; Perez-Sanchez, Rosa Elena; Roman-Bravo, Rafael Maria; Ortiz-Rodriguez, Ruy

    2011-01-01

    ....), a traves de indicadores externos e internos, asociados con la calidad del huevo. Para ello se recolectaron 8 huevos en cada una de las cinco regiones fisiograficas en que se divide al estado de Michoacan, Mexico (40 en total...

  5. Evaluacion de factores de resiliencia en ninos argentinos en condiciones de vulnerabilidad familiar

    National Research Council Canada - National Science Library

    Morelato, Gabriela Susana

    2014-01-01

    El presente trabajo tuvo como objetivo general identificar factores asociados a la capacidad de resiliencia en una muestra de ninos victimas de maltrato infantil y analizar la relacion entre variables...

  6. Procedure for the energy evaluation of electric motors; Procedimiento para la evaluacion energetica de motores electricos

    Energy Technology Data Exchange (ETDEWEB)

    Feliz Quiroz, Marco Antonio [Universidad Autonoma Metropolitana (Mexico)

    2002-06-01

    The present article is not a complete treaty about motors, here it is simply tried to show a practical procedure to evaluate electric motors, in order to determine the economics of their possible replacement by others of high efficiency. With the former in mind, the included database is sustained in the information of a representative number of motors brands commercialized in Mexico, since to include all the brands sold in our country would not be practical and it would be outside the scope of this publication. [Spanish] El presente articulo no es todo un tratado acerca de motores, sencillamente aqui se pretende mostrar un procedimiento practico para evaluar los motores electricos, a fin de determinar la rentabilidad de su eventual reemplazo por otros de alta eficiencia. Por lo anterior, la base de datos incluida se sustente en la informacion de un numero representativo de marcas de motores comercializados en Mexico, ya que abarcar todas las marcas vendidas en nuestro pais no seria practico y quedaria fuera del alcance de esta publicacion.

  7. Energy efficiency standardizing in vertical pumps; Normalizacion de eficiencia energetica en bombas verticales

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, Rosa Aracely; Buendia Dominguez, Eduardo H. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    The Instituto de Investigaciones Electricas (IIE) supporting the Comision Nacional para el Ahorro de Energia (CONAE) (National Commission for Energy Saving) developed the project of a standard on energy efficiency of vertical pumps, turbine type with external motor. This documents has fulfilled the necessary formalities for the issuing of a norm, being published the Mexican Official Norm (NOM-001-ENER-1995) on December 22, 1995. This article relates the results of the study for the elaboration of this norm, considering the energy saving, as well as the economic evaluation that supports the project of the norm, indicating also the environmental impact that its implantation will have. [Espanol] El Instituto de Investigaciones Electricas (IIE) apoyando a la Comision Nacional para el Ahorro de Energia (CONAE) elaboro el anteproyecto de norma de eficiencia energetica en bombas verticales tipo turbina con motor externo. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma, habiendose publicado como Norma Oficial Mexicana (NOM-001-ENER-1995) el 22 de diciembre de 1995. En el presente articulo se mencionan los resultados del estudio para la realizacion de esta norma, considerando los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicando tambien el impacto ambiental que tendra su implantacion.

  8. Submersible pumps: Energetic efficiency norm; Bombas sumergibles: norma de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, R. A.; Buendia Dominguez, E. H. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    The Instituto de Investigaciones Electricas (IIE), supporting the Comision Nacional para el Ahorro de Energia (CONAE), has prepared a preliminary project of the norm of energy efficiency for submersible pumps. This document has complied with the necessary formalities for the emission of the norm. This paper presents the results of the analysis of the submersible pumps, the energy savings, as well as the economic evaluation that sustains the norm project, additionally pointing out the environmental impact that will bring along the implantation of the same. [Espanol] El Instituto de Investigaciones Electricas (IIE), apoyando a la Comision Nacional para el Ahorro de Energia (CONAE), ha elaborado el anteproyecto de norma de eficiencia energetica para bombas sumergibles. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma. En el presente articulo se mencionan los resultados del analisis de las bombas sumergibles, los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicandose ademas el impacto ambiental que tendra la implantacion de la misma.

  9. Hydraulic speed variators for electrical energy saving; Variadores de velocidad hidraulicos para el ahorro de energia electrica

    Energy Technology Data Exchange (ETDEWEB)

    Valera Negrete, Adrian [Programa de Ahorro de Energia del Sector Electrico (PAESE), Mexico, D. F. (Mexico)

    1999-07-01

    This paper shows the characteristics and applications of the hydraulic speed variators, where because of the conditions of the industrial processes it is necessary to vary the operation parameters, obtaining therefore an energy saving besides improving the control of these processes. In addition, the technical and economic evaluation is presented of a project of the Mazatlan Fossil Power Plant, in which it is intended to invest in the installation of a hydraulic speed variator connected to the forced draft fan of unit number three, which operates with an induction motor of 1,865 kW (2,500 H.P.), with a Voltage of 4,180 V at 1,180 rpm. [Spanish] El presente trabajo muestra las caracteristicas y aplicaciones de los variadores de velocidad hidraulicos, donde por las condiciones de los procesos industriales sea necesario variar los parametros de operacion, obteniendose asi un ahorro de energia ademas de mejorar el control de dichos procesos. Se presenta ademas la evaluacion tecnica y economica de un proyecto de la Planta Termoelectrica Mazatlan, en donde se pretende invertir en la instalacion de un variador de velocidad hidraulico acoplado al ventilador de tiro forzado de la unidad numero tres, el cual opera con un motor de induccion de 1,865 kW (2,500 H.P.), con un voltaje de 4,180 V y una velocidad de 1,180 rpm.

  10. Normalization of the energy efficiency in pumping systems; Normalizacion de eficiencia energetica en sistemas de bombeo

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, R.A.; Buendia Dominguez, E.H. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1995-12-31

    The Instituto de Investigaciones Electricas (IIE), supporting the Comision Nacional para el Ahorro de Energia (CONAE) has prepared the preliminary project of the norm of energetic efficiency for pumping systems, specifically for the agricultural sector. This document has complied with the necessary formalities for the issue of a norm and is about to be published as a Mexican Official Norm of energetic efficiency. In this paper mention is made of the results in the analysis of the pumping systems in operation, the energy saving, as well as the economic evaluation that sustain the norm project, indicating besides the environmental impact that its implantation will have. [Espanol] El Instituto de Investigaciones Electricas (IIE) apoyando a la Comision Nacional para el Ahorro de Energia (CONAE) ha elaborado el anteproyecto de norma de eficiencia energetica en sistemas de bombeo, especificamente para el sector agricola. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma, y esta proximo a publicarse como norma oficial mexicana de eficiencia energetica. En el presente articulo se mencionan los resultados del analisis de los sistemas de bombeo en operacion, los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicandose ademas el impacto ambiental que tendra la implantacion de la misma.

  11. Strategies to optimize the electric energy use in non-residential buildings; Estrategias para eficientizar el uso de la energia electrica en edificios no residenciales

    Energy Technology Data Exchange (ETDEWEB)

    Castro Flores, J.; Morillon Galvez, D. [Comision Nacional para el Ahorro de Energia, Mexico, D. F. (Mexico)

    1995-12-31

    This paper presents the problems identified in non-residential buildings, where the inadequate use of energy is mainly shown in three points: inadequate technology and maintenance, wrong use and wrong habits in the energy use. The consequences of this situation in the ecological, politic and social environment were analyzed. In base of the problems detected the following strategies are proposed: An adequate project and design, retrofit, maintenance and users awareness for the rational energy use. The economic evaluation performed for the implementation of these strategies shows a significant saving potential of the electric power, with measures of null and low investment. [Espanol] Se presenta la problematica identificada en edificios no residenciales; donde el uso inadecuado de la energia electrica se manifiesta principalmente en tres puntos: tecnologia y mantenimiento inadecuados, y mal uso y costumbres de la energia. Se analizo las consecuencias de esta situacion en el ambito ecologico, economico, politico y social. Con base a la problematica se proponen las siguientes estrategias: un adecuado proyecto y diseno, retrofit, mantenimiento y concientizacion del usuario para el uso racional de la energia. La evaluacion economica realizada para implantar estas estrategias muestra un significativo potencial de ahorro de energia electrica, con medidas de nula y baja inversion.

  12. Feasibility of the operation CFE`s conventional power plants for industrial cogeneration; Factibilidad de operar las centrales termoelectricas convencionales de la CFE para cogeneracion industrial

    Energy Technology Data Exchange (ETDEWEB)

    Buendia Dominguez, Eduardo H.; Acosta Torres, Rosa Aracely [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    An analysis is made on how cogeneration could help to maximize the power plant performance since thanks to cogeneration this type of power plants could utilize a part of the waste energy to be supplied to other processes. Also mention is made of the utilization of computer programs to help the design and the realization of functioning tests of this type of power plants. An economic evaluation is presented on the feasibility of operating this type of power plants as cogeneration units and it is concluded that the operation of fossil power plants in the cogeneration mode is not affected by the site where the power plant is located [Espanol] Se analiza como la cogeneracion podria ayudar a maximizar el rendimiento de las centrales termoelectricas ya que gracias a la cogeneracion este tipo de centrales podrian utilizar una parte de la energia desechada para suministrarla a otros procesos. Tambien se menciona la utilizacion de programas de computo para auxiliar en el diseno o realizacion de pruebas de funcionamiento sobre este tipo de plantas. Se presenta una evaluacion economica sobre la factibilidad de operar este tipo de plantas como unidades de cogeneracion y se concluye en que la operacion de centrales termoelectricas en modo de cogeneracion no se ve afectado por el sitio donde se encuentra la central

  13. Reivindicando una definicion para la historia del pensamiento economico

    National Research Council Canada - National Science Library

    Tobon Gomez, Rebeca Alexander

    2009-01-01

    ... su conocimiento de las teorias economicas generales. Las teorias generales permiten, por una parte, establecer un vinculo con las distintas especialidades economicas y, por otra parte, permiten reconciliarse con la economia contemporanea...

  14. Aproximacion artroscopica de tenosinovitis traumatica de la vaina sinovial tarsiana: reporte de caso.(Perspectiva general de la enfermedad/trastorno)

    National Research Council Canada - National Science Library

    Giraldo Botero, Lucas; Vasquez Salinas, Laura

    2010-01-01

    .... Se realizo evaluacion radiologica digital encontrando alteraciones en el surco tarsiano, y tambien una evaluacion ultrasonografica hallando areas hipoecoicas, aumento de tamano y disrupcion fibrilar...

  15. Economic and fiscal modeling of petroleum projects: impact of REPETRO on projects profitability; Modelagem economica e fiscal de projetos petroliferos: impacto do REPETRO sobre a rentabilidade de projetos

    Energy Technology Data Exchange (ETDEWEB)

    Coimbra, Vinicius Accurso de Mello [Universidade Federal do Rio de Janeiro (PPGE/UFRJ), RJ (Brazil). Programa de Pos-Graduacao em Economia; Almeida, Edmar Luiz Fagundes de [Universidade Federal do Rio de Janeiro (IE/UFRJ), RJ (Brazil). Inst. de Economia

    2012-07-01

    REPETRO (Regime Aduaneiro Especial de Exportacao e Importacao de Bens Destinados a Exploracao e a Producao de Petroleo e Gas Natural) is a special custom regime created during the liberalization of the Brazilian oil and gas (O and G) industry. It's goal is to enhance the attractiveness of investments for the exploitation of O and G in Brazilian territory. Under REPETRO, the importation of permitted goods shall benefit from suspension of the following taxes: II, IPI, PIS, COFINS and the reduction of ICMS. The recent review of the sector's regulatory framework, allied to some imperfections on the functioning of the regime, has created a political environment conducive for the questioning of such tax exemption. Given the uncertainty surrounding REPETRO, this paper proposed the construction of a model that simulates all of the economic and tax variables relevant for the exploitation of O and G in Brazilian territory in order to quantify the impact of REPETRO on the profitability of these activities. The model is constructed on the basis of a discounted cash flow that simulates the life cycle of a typical O and G project under the logic of Brazilian fiscal system: Sistema de Concessao. As its original contribution, a complete tax framework was constructed with help from O and G tax specialists. All of the results encountered point to the fact that REPETRO makes a significant impact on the profitability of O and G activities. In some cases it is fundamental for the economic feasibility of the project. In one particular scenario, REPETRO was responsible for doubling the Internal Rate of Return (IRR) of the project. (author)

  16. Adjusting of the power-factor correction. Technical, economic and financial implications; Calculo de correccion del factor de potencia. Implicaciones tecnicas, economicas y financieras

    Energy Technology Data Exchange (ETDEWEB)

    Eficiencia Energetica aplicada (Energiza) [Ciudad Juarez, Chihuahua (Mexico)

    2005-07-01

    A power-factor is a device formed by a dielectric set and electrodes within a container with terminals, able to contribute with capacitance to an electrical circuit, such as: transformers, induction motors, regulators, air conditioning, welding machines, induction furnaces and ballasts. This document also tells us about the location of capacitors in their system, the electrical conductor, the monthly consumption electricity bill, of the benefits when adjusting the power-factor, the liberation of power of the transformer, the reduction of current in feeders, the reduction of losses in feeders, the diminution of the tension fall and the approximate average sale price. [Spanish] Un factor de potencia es un dispositivo formado por un conjunto de dielectrico y electrodos dentro de un recipiente con terminales, capaz de aportar capacitancia a un circuito electrico, como lo son: transformadores, motores de induccion, reguladores, aire acondicionado, maquinas soldadoras, hornos de induccion y balastros. Este documento tambien nos habla acerca de la localizacion de capacitores en su sistema, del conductor electrico, del recibo de consumo mensual de energia, de los beneficios al corregir factor de potencia, la liberacion de potencia del transformador, la reduccion de corriente en alimentadores, la reduccion de perdidas en alimentadores, la disminucion de la caida de tension y el precio de venta promedio aproximado.

  17. Biodiesel: an economic and socio-environmental sustainability project for Brazil; Biodiesel: um projeto de sustentabilidade economica e socio-ambiental para o Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Ramos, Luiz Pereira; Kucek, Karla Thomas; Domingos, Anderson Kurunczi [Parana Univ., Curitiba, PR (Brazil). Dept. de Quimica]. E-mail: lramos@quimica.ufpr.br; k.kucek@hotmail.com; anderson@quimica.ufpr.br; Wilhelm, Helena Maria [Instituto de Tecnologia para o Desenvolvimento (LACTEC), Curitiba, PR (Brazil). Unidade Tecnologica de Quimica Aplicada]. E-mail: helenaw@lactec.org.br

    2003-12-01

    This paper describes an economic and socio-environmental sustainability project for Brazil on bio diesel, which can result in a significant reduction of emissions of particulates, sulfur oxides and gases contributing for the greenhouse effects. The paper also describes the PROBIODIESEL program developed for using trans esterified vegetable oils in the Brazilian energy matrix.

  18. Bolivia-Brazil gas pipeline: a study on the economic viability; Gasoduto Bolivia-Brasil: um estudo sobre a viabilidade economica

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Fabiano Ionta Andrade; Almeida, Isaque da Silva [Universidade Federal do ABC (UFABC), Santo Andre, SP (Brazil); Guerra, Sinclair Mallet Guy [Universidade de Sao Paulo (USP), SP (Brazil)

    2008-07-01

    In the year of 2003 the Brazilian government, as form of to stimulate the demand for natural gas in the country and to promote the success of the investment accomplished in the construction of the pipe line Bolivia-Brazil, it lowered the price of the Bolivian commodity' in US$0,85/MMBTU. In the end of 2005 and mainly in 2006, the current Bolivian president Evo Morales nationalized the energy reservations of your country. To main change it is related to the price of sale of the Bolivian input. The values stipulated in contract they were broken and new negotiations are in process. The maximum capacity of transport of natural gas was reached in 2007. However, before the crisis established due to the measure taken by the government from Bolivia, Brazil suspended the investments in compressors and the projections of increase of this capacity were stagnated. One of the forecasts was to increase in at least more 50% of the current capacity or even in 100% in a more promising scenery. Before this context this research makes the analysis of economical viability regarding the construction of the pipe line Bolivia-Brazil in agreement with three sceneries. The first of them suggests that the investments foreseen in compressors it was stopped and, this way, the pipe line will operate it ties the end of the amortization with your current maximum capacity. The second scenery already suggests that the investments were not interrupted, in other words, the current maximum capacity was overcome in 50%. Similarly to the previous ones, the third scenery makes reference the overrun of the current capacity in 100%. The methodology used for such an analysis it was lent of the financial mathematics and it is treated of the calculation of TIR and of VPL. Both studies show that in agreement with TIR (15%) and VPL the economical viability is satisfactory. The president of PETROBRAS is renegotiating the contract and the investments will probably be retaken. This measured it seeks to benefit the two countries. In the Brazilian case he intends to diminish the possibility of energy crisis for next years. To Bolivia it is the possibility to sell your principal export input to the largest consuming market of Latin America. (author)

  19. Environmental and economical feasibility of selective demolition project; Viabilidad ambiental y economica de un proyecto de demolicion selectiva: hacia una optima gestion de los RCD

    Energy Technology Data Exchange (ETDEWEB)

    Vegas, I.

    2004-07-01

    Selective demolition practices have not yet become popular in our country. Unlike conventional demolition practices, selective demolition helps to increase the amount of components to be reused or materials to be recycled. Thus, the percentage of demolition waste deposited in landfills can be reduced, and the production of recycled materials with optimum quality is fostered. Taking the case study of selective demolition carried out in the municipally of Lasarte-Oria (Basque Country-Spain) as its basis, this paper presents an economic and environmental analysis of the same. Likewise, the economic costs deriving from selective demolition are compared with analogous costs from conventional demolition with an aim to establishing the ideal frame supporting economically feasible selective demolition. (Author)

  20. Pre-salt new regulatory mark and the economic order: constitutionality analysis; Novo marco regulatorio do pre-sal e a ordem economica: analise de constitucionalidade

    Energy Technology Data Exchange (ETDEWEB)

    Pinheiro, Marcela Brasil Pedrosa; Araujo, Mayara de Carvalho; Xavier, Yanko Marcius; Guimaraes, Patricia Borba Vilar [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2010-07-01

    The discovery of vast reserves of hydrocarbons in the pre-salt layer that extends from Espirito Santo to Santa Catarina, added with the economic and strategic value of oil and natural gas, has brought discussion about the reasonableness of the regulatory model adopted so far. Would be prudent to explore these resources through the concession model? From detailed analysis of the doctrinal and bills that aim to inaugurate the new regulatory bills, we sought to answer this question, based majorly on the principles of economic activity applied in our constitutional system. Motivated by the analysis of these constitutional principles proposed, the State is seen as a regulating agent of the economic activities, fulfilling its role to supervise, encourage and plan the direction of national economic system. The sharing model gives greater state involvement and is able to convert the wealth of pre-salt in citizenship, but only if well implemented. Thus, based on constitutional principles and the notion of development as freedom, the conclusion of this paperwork is for the constitutionality of the new regulatory bills. (author)

  1. Una valutazione economica di citrato di fentanile ad assorbimento orale (Actiq® per la terapia del dolore in pazienti affetti da cancro

    Directory of Open Access Journals (Sweden)

    C. Lucioni

    2004-12-01

    Full Text Available Breakthrough cancer pain is a component of chronic cancer pain that is particularly difficult to treat due to its severity and rapid onset. Effective relief of cancer pain is an integral part of comprehensive cancer care. Many cancer patients experience persistent pain that is treated with a fixed scheduled opioid regimen. But these patients can experience acute breakthrough pain, with sudden onset that occurs spontaneously or as a result of activity. To supply this occurrence is indicated an addictional prescription of opioids. The ideal preparation for managing breakthrough pain is one that is able to mirror its characteristics, i.e. rapid in onset and relatively short in duration. Oral transmucosal fentanyl (Actiq®, an innovative form of fentanyl citrate, provides a rapid onset of pain relief and it is more appropriate than morphine for treating episodes of breakthrough pain. Besides the impact on the patients’ quality of life, cancer pain involves remarkable expenditures, as direct and indirect costs, by the National Health Care System and the Society. This study presents the estimation of the costs associated with the use of oral transmucosal fentanyl (Actiq®. Aim of the study is to verify if the use of oral transmucosal fentanyl (Actiq® can be considered as cost saving or cost effective compared with current therapy.

  2. Photovoltaic energy: environmental and economic analysis of axis solar trackers for photovoltaic installations; Energia fotovoltaica: analise economica ambiental de seguidores solares para instalacoes fotovoltaicas

    Energy Technology Data Exchange (ETDEWEB)

    Paes, Andrea Galvao; Bertolon, Expedito; Pacca, Sergio [Universidade de Sao Paulo (EACH/USP), SP (Brazil). Escola de Artes, Ciencias e Humanidades. Curso de Gestao Ambiental

    2008-07-01

    In this work we present an economic assessment photovoltaic systems using single axis and dual axis solar trackers. The analysis was carried out for the city of Sao Paulo and the results show that in comparison with fixed installations, the single axis system and the dual axis system produce respectively 19.6% and 24.7% more power. The power output of the dual axis system is 4.3% greater than the power output of the single axis system. Considering an annual discount rate of 12% and the equipment cost, the cost of the surplus energy due to the use of the single axis and the dual axis trackers was R$0.25/kWh and R$0.18/kWh. Because the average cost of electricity produced by photovoltaic modules is R$3/kWh, we recommend the installation of solar trackers. (author)

  3. LA FUNCIÓN ECONOMICA DE LA COOPERATIVA Y LA NECESIDAD DE UNA LEGISLACIÓN ADECUADA. / COOPERATIVES ECONOMIC PURPOSE AND SUITABLE LEGISLATION.

    Directory of Open Access Journals (Sweden)

    Enrique GADEA SOLER

    2012-05-01

    Full Text Available El objetivo de este trabajo es doble: por una parte, se analiza el origen histórico y la función económica actual de las sociedades cooperativas y, por otra, se realiza un estudio crítico de su normativa aplicable, con el objeto de determinar las bases de su futura legislación. / This paper has dual objertives: it aims to analyse the historical origin and current economic purpose of cooperative companies while also making a critical study of applicable regulations with a view to defining the bases of future legislation.

  4. Economic viability study of micro-cogeneration plants at residential scale; Estudo de viabilidade economica de plantas de micro-cogeracao em escala residencial

    Energy Technology Data Exchange (ETDEWEB)

    Dutra, Jose Carlos Charamba; Ramalho e Soares, Ravi [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil); Michalewicz, Jacek Stanislaw [Centro Federal de Educacao Tecnologica de Pernambuco (CEFET-PE), Recife, RN (Brazil)

    2008-07-01

    This paper presents the results of a technical and economical feasibility study for the use of micro cogeneration systems in residential scale, using natural gas as an energy source. It was considered two micro-cogeneration systems to meet demand of some types of fictitious establishment of commercial and residential plants, each with its advantages and disadvantages. The first system has as a main driving machine a micro turbine with a nominal capacity of 30 kw, the second one uses a gas motor-generator, with nominal capacity of 35 kw. (author)

  5. Study of technical and economic feasibility of a cogeneration system in the tertiary sector; Estudo de viabilidade tecnica-economica de um sistema de cogeracao no setor terciario

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Rodolffo Aquino de; Rocha, Carlos Roberto; Bortoni, Edson da Costa [Universidade Federal de Itajuba (EXCEN/UNIFEI), MG (Brazil). Centro de Excelencia em Eficiencia Energetica

    2008-07-01

    This study aims to examine the technical feasibility and financial cost for a cogeneration system in a company in the tertiary sector. For this, was studied the electromechanical and thermal characteristics of a shopping center, as well as the technologies associated with the proposed cogeneration system. From the modeling of electric and thermal loads it was determined the system of operation for the system and the possible surplus energy generated. For the analysis of economic viability compare operating costs without cogeneration and with the alternative of cogeneration chosen. Among the calculations are the costs of investment and operation of the system. Was encountered the attractiveness of a cogeneration system, which uses natural gas as fuel for alternative engines and, in turn, reject heat to the absorption chillers. The idealized cogeneration system was also evaluated positively with a view to qualification required for participation in policies to encourage the rational use of energy resources. (author)

  6. La crescita del debito pubblico in Italia: evoluzione, prospettive e problemi di politica economica.(The growth of public debt in Italy: past experience, perspectives and policy problems

    Directory of Open Access Journals (Sweden)

    L. SPAVENTA

    2013-12-01

    Full Text Available Il lavoro esamina l'esperienza italiana , con riferimento alla crescita e debito pubblico. Non cerca di testare opinioni contrastanti , in quanto gli effetti di alcune innovazioni finanziarie e politiche sono troppo recenti e alcuni dati sono di scarsa qualità . Piuttosto , la sua portata più limitata è di attingere alle esperienze passate e , cosa più importante , valutare le prospettive future , al fine di discutere di alcuni problemi per quanto riguarda la politica fiscale e monetaria. L'autore esamina formazione del  debito con riferimento alle necessità di finanziamento , la loro composizione e la loro misura rettificato , prima di prendere in considerazione le politiche di finanziamento perseguite dalle autorità e le variazioni nella composizione , la proprietà e il costo del debito . Infine vengono esaminati i possibili sviluppi futuri e di alcuni problemi di politica connessi  .The work surveys the Italian experience with reference to growth and public debt. It does not seek to test conflicting views, as the effects of some financial and policy innovations are too recent and some data is of poor quality. Rather, its more limited scope is to draw on past experience and, more importantly, assess future prospects in order to discuss some problems regarding both fiscal and monetary policy. The author examines debt formation with reference to borrowing requirements, their composition and their adjusted measure, before taking into consideration financing policies pursued by the authorities  and the changes in the composition, ownership and cost of debt. Finally, possible future developments and some connected policy problems are examined.JEL: H63, E52, E62

  7. Integrated economic management. Principal aspects and future; La Gestion economica integrada. Aspectos clave del proceso de integracion y retos para el futuro

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    Now that five years have passed (1999-2003) since the Owner Companies decided to merge the Asco and Vandellos-II nuclear power plants, we believe that, for Integrated Management through a single AIE, it is timely and advisable to describe the key issues of the process implemented to optimize economic results, always in accordance with the Policies of Nuclear Safety, Quality and Environment, Prevention, Human Factors and Availability, and we emphasize the following as essential elements: The Corporate Model; strategic/Operating Plans; integrated Economic Management Model SIE; Rationalization of the organizational structure, Continuous Training; Analysis of Processes and Procedures. (Author)

  8. Economic viability for electrical power generation using biogas produced in swine grange; Viabilidade economica da utilizacao do biogas produzido em granja suinicola para geracao de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Cervi, Ricardo G. [Universidade Estadual Paulista (FCA/UNESP), Vale do Ribeira, SP (Brazil). Fac. de Ciencias Agrarias], e-mail: rghantous@registro.unesp.br; Esperancini, Maura S.T.; Bueno, Osmar de C. [Universidade Estadual Paulista (DGTA/FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agrarias. Dept. de Gestao e Tecnologia Agroindustrial], e-mails: maura@fca.unesp.br, osmar@fca.unesp.br

    2010-09-15

    Biogas production through anaerobic bio digestion represents an important breakthrough for the problem of swine waste and energy availability for rural areas. This work aimed to develop a study to estimate the economic viability of a bio integrated system installation and operation to produce electricity from swine wastes. Data for the study were collected in an agroindustry where there are plenty of agricultural activities; however the swine production activity was selected for the anaerobic digestion process because it generates a large amount of waste, with a limited provision in the environment, which characterizes a case study. The analyzed bio digester is a continuous tubular model with brick concrete duct and plastic covering with a gamester, and where the waste of 2,300 fattening pigs are deposited daily. The initial investment estimate for the installation was R$ 51,537.17. The system annual costs were R$ 5.708,20, for maintenance, R$ 4,390.40 for depreciation and R$ 1,366.77 for interests. It was concluded that the bio integrated system would achieve favorable economic results if the energy consumption were to 35 k W per hour a day, in average, where the net present value (NPV) is R$ 9,494.90 and the internal rate of return (IRR) is 9,34% per year. (author)

  9. Economic analysis and energy balance of biogas at swine farms; Analise economica e balanco energetico do biogas em granja de suinos

    Energy Technology Data Exchange (ETDEWEB)

    Lira, Joao Carlos U.; Marra, Enes G. [Universidade Federal de Goias (UFG), Goiania, GO (Brazil); Domingues, Elder G. [Instituto Federal de Educacao, Ciencia e Tecnologia de Goias (IFG), Goiania, GO (Brazil)

    2010-06-15

    This paper presents the analyse of a case taking advantage of biogas generated from the swine dejects. Performed in a farm at southeast of the state of Goias, Brazil, it evaluates the viability of utilization of biogas for generation of electric energy, for heating, or both. The process presents environmental and economic benefits as the carbon emissions are reduced and their credits can be negotiated. (author)

  10. Economic approach of pipelines: TBG (Transportadora Brasileira Gasoduto Brasil-Bolivia) case; Analise economica de gasoduto: o caso TBG (Transportadora Brasileira Gasoduto Brasil-Bolivia)

    Energy Technology Data Exchange (ETDEWEB)

    Pinho, Celso P.; Pettendorfer, Erick P. [Transportadora Brasileira Gasoduto Bolivia-Brasil, S.A., Rio de Janeiro, RJ (Brazil)

    2005-07-01

    The objective of this paper is offer to the industry an example of successful project finance in an emergent country. The Bolivia-Brazil pipeline was projected to develop an industry of natural gas in Brazil. The total costs invested was around US$ 1, 5 billion (Brazilian side) and BID, BIRD, CAF, BEI, BNDES- Finame, Marubeni, Mediocredito with main lenders. There are tree contracts with Ship or Pay clauses that are the main guarantees of the project. We will describe the mains variables of this project and the economic model that was created to calculate the tariff and project all financial reports of Bolivia-Brazil Pipeline. (author)

  11. Sylos Labini, la programmazione economica e la riforma urbanistica (1962-1967 (Sylos Labini, Economic Planning and Urban Reform, 1962-1967

    Directory of Open Access Journals (Sweden)

    Sandro Amorosino

    2016-06-01

    Full Text Available The article describes the attempts at economic planning in Italy in 1962-1964, which tried to strike a balance between economic development and control of the urban growth processes. Text of the speech given at the conference "Paolo Sylos Labini e la politica delle riforme", held at Sapienza University of Rome on 04 December 2015, organized by the Accademia dei Lincei and Economia civile.

  12. Claroscuros del desarrollo sustentable y la lucha contra la desertificacion: las racionalidades economicas en el ojo de la tormenta. Estudio de caso con productores caprinos de tierras secas

    National Research Council Canada - National Science Library

    Torres, Laura

    2010-01-01

    El trabajo analiza la situacion de conflicto que se presenta en las tierras secas de Mendoza, entre productores caprinos y programas de lucha contra la desertificacion, a proposito de las practicas...

  13. Economic analysis of the generation of electric energy from biogas in pig production; Analise economica da geracao de energia eletrica a partir do biogas na suinocultura

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Franco M.; Oliveira, Paulo A.V. de [EMBRAPA Suinos e Aves, Concordia, SC (Brazil)], Emails: franco@cnpsa.embrapa.br, paolive@cnpsa.embrapa.br

    2011-06-15

    The demand for alternative sources of energy has grown in recent years in line with the variation of petroleum prices coupled with the recent energy crisis. Through anaerobic digestion swine manure can be converted into biogas. In the present study it was evaluated the economic viability of using biogas as an alternative source for the production of electricity, for different periods of generation. The method used for the economic evaluation was the net present value (NPV). The time of return on invested capital was also calculated taking into account the discount interest rate on cash flows. The study proved to be economically viable use of biogas from swine manure as a source for generating electricity. The increased demand for electricity in the property increases the net present value and decreases the time required for return of the investment. (author)

  14. MANUEL AGUILAR Fisico de particulas, delegado de Espana en el CERN "La crisis economica del CERN lo situa en una posicion muy fragil"

    CERN Multimedia

    Rivera, A

    2002-01-01

    "Manuel Aguilar, 58 anos, dirige uno de los mas potentes grupos experimentales de fisica de altas energias (o de particulas elementales) en Espana, en el Ciemat. Een realidad, dirige todo un departamento, que incluye fusion nuclear, en el que trabajan unas 200 personas. Aguilar, ademas, es delegado cientifico de Espana en el Laboratorio Europeo de Fisica de Particulas (CERN), junto a Ginebra, centro clave internacional que actualmente construye su nuevo gran acelerador LHC. Este fisico acaba de ingresar en la Real Academia de Ciencias Exactas, Fisicas y Naturales" (1 page).

  15. Exergy and thermoeconomic evaluation of hydrogen production from natural gas; Avaliacao exergetica e termo-economica da producao de hidrogenio a partir do gas natural

    Energy Technology Data Exchange (ETDEWEB)

    Cruz, Flavio Eduardo da [PROMON Engenharia Ltda., Sao Paulo, SP (Brazil); Oliveira Junior, Silvio de [Universidade de Sao Paulo (USP), SP (Brazil). Escola Politecnica

    2008-07-01

    Some specific processes are required to obtain pure hydrogen and the most usual one is the natural gas reforming, where natural gas reacts with superheated steam producing H{sub 2}, CO, CO{sub 2} and H{sub 2}O. This paper presents exergy and thermoeconomic analysis of a complete hydrogen production unit of a petroleum refinery. The hydrogen production unit analysed in this paper has to supply 550,000 Nm{sup 3} of hydrogen per day to purify diesel oil. Based on a synthesis plant of the hydrogen production unit, the exergy efficiency of each component and of the overall plant are calculated. The hydrogen production cost is determined by means of a thermoeconomic analysis in which the equality cost partition method is employed, including capital and operational costs, in order to determine the production cost of hydrogen and other products of the plant.(author)

  16. Buscando ayuda economica: Fuentes de informacion federal, estatal y otros recursos (Looking for Student Aid: Federal, State, and Other Sources of Information).

    Science.gov (United States)

    Office of Federal Student Aid (ED), Washington, DC.

    This brochure in Spanish contains information about finding federal, state, and other sources of information about student financial aid for college. The brochure advises that most of the information private college scholarship search companies provide can be obtained for free elsewhere. Students should ensure that they are not paying for free…

  17. Economical analysis of the use of biogas in swine production for generation of electric energy; Analise economica da utilizacao do biogas na suinocultura para geracao de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Franco Muller; Oliveira, Paulo Armando Victoria de [EMBRAPA Suinos e Aves, Concordia, SC (Brazil)], Emails: franco@cnpsa.embrapa.br, paolive@cnpsa.embrapa.br

    2009-07-01

    The demand for alternative sources of energy has been growing in the last years in function of the variation on the prices of petroleum and the recent energy crisis. The anaerobic bio digestion can convert swine manure in biogas. In the present work it was studied the economic viability of the use of the biogas as alternative source for the generation of electric energy in different demand levels. The methodology utilized was the Net Present Value. The study showed that the utilization of biogas as electric energy source is economically feasible. The increase of the demand of electric energy, in the property, associated to the increase of the price of the electric energy, increases the economical profits and accelerates the time of return of the investments. (author)

  18. La responsabilidad social de la universidad. La experiencia de la Secretaria de Bienestar de la Facultad de Ciencias Economicas de la Universidad de Buenos Aires

    National Research Council Canada - National Science Library

    Saravia, Federico

    2012-01-01

    .... Considerando a la responsabilidad social universitaria como agente fundamental en los procesos de cambio social, se expone la experiencia de la Secretaria de Bienestar Estudiantil de la Facultad...

  19. Plataforma d'autoavaluacio per a Teoria Economica Plataforma de auto-evaluación para Teoría Económica

    Directory of Open Access Journals (Sweden)

    Juliette Milgram-Baleix

    2009-12-01

    Full Text Available En este artículo se describe una plataforma de autoevaluación para alumnos de asignaturas de Teoría Económica de primer ciclo. El objetivo es propiciar la autonomía, el trabajo asiduo y personal y el autoaprendizaje del estudiante. El sistema es aplicable a otras asignaturas, en particular asignaturas que utilizan las herramientas matemáticas y en las que se requieren la corrección de numerosos ejercicios numéricos. Esta plataforma ha permitido aumentar el rendimiento y participación de los usuarios, un seguimiento por parte del profesor del proceso de aprendizaje y una homogeneización de contenidos y criterios de evaluación entre los profesores implicados.

  20. Proposal for a technical-economic and environmental evaluation projects for distributed generation; Proposta de avaliacao tecnica-economica-ambiental para projetos de geracao distribuida

    Energy Technology Data Exchange (ETDEWEB)

    Fortes, Marcio Zamboti [Universidade Severino Sombra, Vassouras, RJ (Brazil); Gouvea, Marcos Roberto [Universidade de Sao Paulo (USP), SP (Brazil)

    2008-07-01

    The multi discipline effects in engineering projects, mainly in those of infrastructure, have extended the borders of research to not only evaluate them of the conventional point of view, economic and technical, but also environmental and social. On the other hand, the investor who traditionally searched alternatives only considering the economic and financial performance currently is taken to analyze also the social and environmental aspects. The model described in this paper is a solution proposal to evaluate the merit of an enterprise of distributed generation of thermal origin, considering the economic, social and environmental aspects, using merit indexes that quantify, directly, economic aspects as capital return tax and operating income eliminates, as well as social factors like the impact in the education, health, income and employment rates and still, it verifies the attendance of the environmental restrictions. The solution presented brings a simple and clear form to attribute a merit degree of aggregate to the alternatives to embed distributed generation, considering the intensity of the subjective social responsibility of the investor. The presented model is an important contribution to stimulate a form to evaluate and to prioritize the multi discipline implementation to a distributed generation enterprise, also being able, to be used as financial index or other incentives of the sort. (author)

  1. Economic evaluation of organic deposition inhibition treatment: case study; Avaliacao economica de tratamentos de inibicao de deposicao organica: estudo de casos

    Energy Technology Data Exchange (ETDEWEB)

    Lechuga, Fernanda Curty; Seidl, Peter Rudolf; Guimaraes, Maria Jose de Oliveira [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Escola de Quimica; Lucas, Elizabete Fernandes [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Macromoleculas

    2008-07-01

    During the production process the temperature and pressure decrease along the well, that generate an increase in viscosity, changes in the composition of the oil and chemical changes in the balance of oil. These changes in the balance may lead to precipitation and deposition of organic components of heavy oil. These occurrences cause serious economic consequences. To solve problems related to organic deposition, it is proposed some actions to prevent the formation of these deposits. Chemical additives interfere in precipitation of paraffins and aggregation of asphaltenes, increasing stability. This paper aims to examine, in economic terms, treatments prevention in different wells by the mechanism of inhibition of organic deposition by the action of chemical additives. The methodology applied for the economic analysis was the return on investment (ROI - Return-on-investments) that could estimate when there was an economic gain in problems of organic deposition treated with chemical additives. The results showed that if these wells use prevention methods it could get a return of more than $ 100.00 per dollar invested in treatment, which would be beneficial, since these treatments increase the production of oil and reduce the idle time in wells. (author)

  2. Let's Help Each Other. Economic Organization Booklet 3. Teacher's Edition=Ayudemonos uno al otro. Organizacion economica libro 3. Manual para El Maestro.

    Science.gov (United States)

    California State Univ., Los Angeles. National Dissemination and Assessment Center.

    The booklet is part of a grade 10-12 social studies series produced for bilingual education. The series consists of six major thematic modules, with four to five booklets in each. The interdisciplinary modules are based on major ideas and designed to help students understand some major human problems and make sound, responsive decisions to improve…

  3. Economic Organization Module. Test Booklet. Test Items for Booklets 1, 2, 3=Libro de prueba. Modulo de organizacion economica. Itemes de prueba para los libros 1, 2, 3.

    Science.gov (United States)

    California State Univ., Los Angeles. National Dissemination and Assessment Center.

    The booklet is part of a grade 10-12 social studies series produced for bilingual education. The series consists of six major thematic modules, with four to five booklets in each. The interdisciplinary modules are based on major ideas and designed to help students understand some major human problems and make sound, responsive decisions to improve…

  4. From Here to There. Economic Organization Booklet 2. Teacher's Edition=De aqui a alla. Organizacion economica libro 2. Manual para El Maestro.

    Science.gov (United States)

    California State Univ., Los Angeles. National Dissemination and Assessment Center.

    The booklet is part of a grade 10-12 social studies series produced for bilingual education. The series consists of six major thematic modules, with four to five booklets in each. The interdisciplinary modules are based on major ideas and designed to help students understand some major human problems and make sound, responsive decisions to improve…

  5. Economical and technological feasibility of poliuretane recycling of cars; Viabilidad economica y tecnica del reciclado de la gomaespuma de los asientos de coche

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez Fueyo, J. L.; De la Fuente Garcia, D. [Universidad de Oviedo. Oviedo (Spain)

    1998-12-31

    Between the industries that are more interested in the possibilities of recycling, are the automovil`s industries. The cars, after reaching the end of their useful life, are dismantled and separated in different materials. Some of them are recyclable, just like the flexible polyurethane which cover the seats. There are several methods for recycling this material, more or less technically complex. Therefore, the issue would be to check if there is a market for the recycled product, so the process can be profitable. This work presents a complete study of the technical and the market-possibilities for this material. (Author) 8 refs.

  6. Guideline for electric power tariffs aiming economic and energetic efficiency; Orientacao de tarifas de energia eletrica para a eficiencia economica e energetica

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Demostenes B. da

    1992-12-31

    In order to achieve energy efficiency, the marginal costs should be considered as a basis to tariffs, because they incorporate the signs of demand and the companies management in offering energy. This work proposes a tariff policy that would reduce the consumption of energy, making it more efficient than the existing one, and would also increase the economic efficiency. 16 refs., 8 figs., 39 tabs.

  7. Economic evaluation of pipeline construction and capacity expansion projects; Avaliacao economica dos projetos de construcao e expansao de um gasoduto de transporte

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Leandro Bastos [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2003-07-01

    In this work, two investment projects that are characteristic of the recent phase of the Brazilian natural gas industry were economically valued, taking into account the government going Thermoelectric Priority Program or PPT: economical design of a gas pipeline, to be built and operated by a Proprietary Carrier, where the interest variable is the transport tariff that will remunerate the investment and pipeline expansion through compressor stations, sponsored by the only shipper in the system, as it aims at selling gas to a thermoelectric plant, where the interest variable is the net present value of the project. In both cases, some sensitive analyses of the interest variable to variables that carry greater uncertainty are presented. Results show that pipeline expansion is viable. (author)

  8. CDM incidence in the economical feasibility of cogeneration in Argentine; Incidencia del MDL en la factibilidad economica de sistemas de cogeneracion industrial en Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Sosa, Maria Isabel; Fushimi, Alberto [Universidad Nacional de La Plata (UNLP), La Plata, BA (Argentina). Fac. de Ingenieria. Area Departamental Mecanica], e-mail: misosa@volta.ing.unlp.edu.ar, e-mail: afushimi@volta.ing.unlp.edu.ar

    2006-07-01

    In this paper, the contribution to the financial and economic feasibility of cogeneration systems with gas turbine and exhaust gas heat recovery boiler is discussed in function of the financial credit for reduction of greenhouse gases emissions (GH Gs) by using the Clean Development Mechanism (CDM). It has to be kept in mind the restrictions of these systems to be capital intensive projects subject to the effects of the economy of scale. Other factors to take into account are the constancy of the heat demand, the rates of sale of electricity and steam surpluses, the regulatory laws, the ignorance of the cogeneration technologies on the part of the investor, among others. The profitability of the investment for implementation of a cogeneration system can be elevated in large facilities with gas turbines and heat recovery boiler (T G + HRSG). Results discussed in previous papers are pointed out and new conclusions are enunciated. (author)

  9. Prevalencia de carie e fluorose dentaria em escolares de 12 anos do Municipio de Paracambi-RJ e associações com variaveis socio-economicas

    OpenAIRE

    Cristiane de Souza Neves Fofano

    2007-01-01

    Resumo: Os objetivos desse estudo foram: a) determinar por meio de um estudo epidemiológico transversal a prevalência de cárie e fluorose dentária em Paracambi, RJ, na população de escolares na faixa etária dos 12 anos; b) avaliar se há relação entre a experiência de cárie e prevalência e grau de fluorose nas crianças avaliadas e o nível socioeconômico. A amostra foi composta por 263 escolares, distribuídos em 06 escolas públicas e 03 escolas privadas. Foram coletados dados sobre a cárie e a ...

  10. RELAÇÃO ENTRE A COOPERATIVA E COOPERADO NA AGRICULTURA FAMILIAR: A BUSCA PELA SUSTENTABILIDADE ECONOMICA DOS PRODUTORES DE LEITE

    Directory of Open Access Journals (Sweden)

    Marcelo Roger Meneghatti

    2017-04-01

    Full Text Available O objetivo neste artigo foi de identificar as relações entre cooperativa e cooperados e realizar uma análise que permita conhecer a realidade das propriedades rurais fornecedoras do leite a ser utilizado no processamento da Unidade de Industrialização, Pesquisa, Capacitação e Transferência de Tecnologia de Leite e Derivados - LACTEL, estruturada pelas COOPLAF - Cooperativa de Leite da Agricultura Familiar com Interação Solidária de Campo Bonito e Guaraniaçu no Paraná. As visitas nas propriedades rurais e as entrevistas realizadas com os produtores rurais de 15 propriedades se deram por meio de um formulário pré-elaborado e avaliado em pesquisa anterior. Estas entrevistas aconteceram no período do mês de Maio de dois mil e catorze, período em que, segundo os produtores, ocorre o início de uma escassez nas pastagens, o que interfere na produção leiteira diminuindo a média mensal, mas os dados coletados foram baseados nos meses de maior produtividade. Nesta oportunidade foram levantados dados estatísticos sobre o cenário encontrado na produção do leite, e entrega do produto à cooperativa, e também dados condizentes ao relacionamento entre a cooperativa e o cooperado produtor. Concluiu-se que a realidade das famílias é de uma dependência financeira da atividade leiteira, na qual os agricultores familiares estão investindo em melhorias, e depositando esperanças para uma maior sustentabilidade econômica.Palavras-chave: Logística Reversa. Política Nacional de Resíduos Sólidos. Cadeias Reversas. Resíduos de Equipamentos Eletroeletrônicos.

  11. Analysis of economic feasibility of sale of surplus electricity in cogeneration: case study; Analise de viabilidade economica de venda de energia eletrica excedente em cogeracao: estudo de caso

    Energy Technology Data Exchange (ETDEWEB)

    Fodra, Marcelo [Universidade Estadual Paulista Julio de Mesquita Filho (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas; Universidade Sagrado Coracao (USC), Bauru, SP (Brazil)], email: marcelo.fodra@fca.unesp.br; Esperancini, Maura Seiko Tsutsui [Universidade Estadual Paulista Julio de Mesquita Filho (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Dept. de Gestao e Tecnologia Agroindustrial], email: maura@fca.unesp.br

    2010-07-01

    The production of energy in large quantity and at competitive prices is crucial for economic development, which allied to the environmental question, has incentivated the use of renewable sources of energy. One of the most promising sources of renewable energy is the cogeneration from the residues of cane. Currently, the scenario for this kind of energy production is not consolidated, as production prices are not stable, inducing a risky situation for the environment. This work was aimed to study the economic viability of installing a main site for cogeneration of electricity, in a regional sugarcane factory located in the central region of Sao Paulo state that currently uses residues of sugar cane as fuel. The risk factor that was taken into consideration was the price paid for the MWh sold to the Chamber of Commerce of Electricity. The Monte Carlo Method was used to assess the risk factors for the analysis, by using of New Present Value (NPV), in a scenario that uses 20% of the initial investment made by the energy dealer. After the simulations were finished, considering the conditions used in this work, the project tends to be not feasible, as the behavior of the prices of cogenerated MWh are not sufficient for paying the initial investment and the operational costs. (author)

  12. Economic and financial feasibility analysis of natural gas urban distribution; Analise da viabilidade economica e financeira para o desenvolvimento da rede urbana de distribuicao de gas natural

    Energy Technology Data Exchange (ETDEWEB)

    Cabral, Guilherme G.; Cunha, Eduardo N.; Teixeira, Clovis C. [Companhia de Gas do Estado do RS (SULGAS), Porto Alegre, RS (Brazil)

    2008-07-01

    SULGAS has developed more judicious systematics investments analysis in the natural gas distribution plants in urban areas . A survey has been made of the variables that influence this type of investment, identifying the most relevant ones. Spread sheet in platform Microsoft Excel and Visual Basic was elaborated that makes possible the deterministic analysis, sensibility, and risk analysis of the projects, through consolidated indicators usable in economic engineering. The great differentiation of this proposal is the possibility/flexibility of the economic impact analysis that each future customer has in the branch where he is linked. The spread sheet presents graphical platforms in which the schematical drawings of the projects are inserted on satellite photos of the region, making possible the projects architectures visualization in parallel with the economic analysis. This graphical platform is tied with the alternatives selected in the economic analysis, being brought up to date the images in accordance with the projects selected in the spread sheet. The risk analysis are carried out through the Monte Carlo simulation, generating investment return probability from each branch, cell, or customer, depending on the criteria defined in the spread sheet. This makes possible the insertion and economic analysis of the factors that can influence the investments in NG distribution system, becoming an important tool in the decision making. (author)

  13. AVALIAÇÃO TÉCNICA E ECONOMICA DA GERAÇÃO DE ENERGIA DO BIOGÁS NOS ATERROS DE GRAMACHO E SEROPÉDICA

    Directory of Open Access Journals (Sweden)

    Fábio Viana de Abreu

    2014-07-01

    Full Text Available Normal 0 21 false false false MicrosoftInternetExplorer4 A geração de energia a partir do biogás é uma maneira de produzir energia elétrica limpa, buscando reduzir os impactos globais gerados pela queima dos resíduos sólidos urbanos. Nesse trabalho foram estudadas as tecnologias de conversão energética, com a análise da melhor alternativa para a conversão energética do biogás em aterros sanitários e na agropecuária no Brasil. São apresentados estudos comparativos e os resultados demonstraram que os grupos geradores, utilizando motores de combustão interna (ciclos Otto ou Diesel, são mais viáveis tanto no viés técnico quanto no econômico, para conversão energética do biogás de aterros sanitários no Brasil por meio de Unidades Termoelétricas a biogás.  Palavras Chave: Biogás; Conversão Energética; Gases de efeito estufa; Mecanismo de Desenvolvimento Limpo. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabela normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;}

  14. Economic and safe operation of isolated systems with significant contribution from renewable energy sources; Operacao economica e segura de sistemas isolados com grande penetracao de energias renovaveis

    Energy Technology Data Exchange (ETDEWEB)

    Matos, M.A. [Instituto de Engenharia de Sistemas e Computadores (INESC), Porto (Portugal); Vlachos, A; Androutsos, A. [NTUA, Atenas (Greece); Bakirtzis, T. [AUTH, Salonica (Greece); Gigantidou, A. [DEI, Heraklio (Greece). E-mail: mmatos@inescn.pt; avlachos@power.ece.ntua.gr; bakiana@eng.auth.gr; deh_kkf@iraklio.netor.gr

    1999-07-01

    Medium and large size isolated systems with a significant contribution from renewable energy sources, specifically eolic energy, are not conveniently operated at the present, neither by the conventional ways of unit commitment/load dispatcher nor by the simplified procedures used in the small isolated power networks. This paper presents a new approaching, in the CARE framework which is financially supported by the European Union through the EEN-JOULE assistance program. The principal idea is to perform unit commitment on-line in the same dispatching cycle, by using the load forecasting and the more recent wind power. The process includes dynamic safety fast evaluation and a module for helping the decision making.

  15. The agricultural sector in Bahia State: economic outlook and energy intensity; O setor agropecuario no estado da Bahia: perspectivas economicas e intensidade energetica

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Claudio Bezerra de [Faculdade Apoio, Lauro de Freitas, BA (Brazil); Bajay, Sergio Valdir [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico

    2006-07-01

    The main characteristics of the rural economy in the State of Bahia are presented in this paper, together with the evolution of its main components in the last years and the growth perspectives for the next years. A more detailed analysis is carried out for the rural areas in the state which present higher development potential and for their respective crops . The progression of the state of Bahia' shares in the national rural economy's value added and the energy intensity changes of the main energy carriers employed in this sector are also presented in the paper. (author)

  16. Analisis de la calidad en el servicio y satisfaccion de los estudiantes de Ciencias Economicas de la Universidad de Cartagena mediante un modelo de ecuaciones estructurales

    National Research Council Canada - National Science Library

    Vergara Schmalbach, Juan Carlos; Quesada Ibarguen, Victor Manuel

    2011-01-01

    Los modelos de ecuaciones estructurales se han utilizado ampliamente para el analisis de la calidad del servicio en diversas entidades, demostrando su adaptabilidad y eficacia a la hora de determinar...

  17. Introduccion a la Evaluacion: Una introduccion practica a la evaluacion en proyectos para la ninez de temprana edad (Introducing Evaluation: A Practical Introduction to Evaluation in Early Childhood Projects).

    Science.gov (United States)

    Eyken, Willem van der

    Developed for the staff of field projects, this booklet provides guidelines for evaluating projects to promote activities that will enhance the well-being of young children, their families, and their communities. The booklet aims to stimulate ideas and discussions, offers general principles to help in evaluation, and raises issues that encourage…

  18. CO2 emission scenarios for next centuries to obtain more complete simulations of the global warming; Scenari globali di emissione a lungo termine di CO2 per una simulazione piu' completa dell'effetto serra

    Energy Technology Data Exchange (ETDEWEB)

    Michelini, M. [ENEA, Divisione Sistemi Energetici per la Mobilita' e l' Habitat, Centro Ricerche Casaccia, Rome (Italy)

    2001-07-01

    dati storici e con le valutazioni tecnico-economico-ambientali relative alla diffusione delle nuove tecnologie e fonti energetiche. Le previsioni sulla consistenza della popolazione mondiale sono assunte dalle pubblicazioni UNFPA. Il grado di sviluppo economico mondiale nel lontano futuro e' ottenuto attraverso la simulazione dell'evoluzione economica della popolazione mondiale suddivisa in quattro grandi aree geoeconomiche con differente consumo procapite. Adottando questi criteri sono stati realizzati due differenti scenari, che vengono messi a confronto con gli scenari SRES descritti nel Third Assessment Report-WG1 dell'IPCC, discutendo anche i motivi e le conseguenze del taglio di questi ultimi al 2100. Alcune simulazioni del riscaldamento globale nel lungo periodo sono state eseguite nel succitato RT in relazione ai due scenari. I risultati sono discussi e messi a confronto con i corrispondenti risultati delle simulazioni riportate nell'Assessment dell'IPCC.

  19. MATLAB platform for Monte Carlo planning and dosimetry experimental evaluation; Plataforma Matlab para planificacion Monte Carlo y evaluacion dosimetrica experimental

    Energy Technology Data Exchange (ETDEWEB)

    Baeza, J. A.; Ureba, A.; Jimenez-Ortega, E.; Pereira-Barbeiro, A. R.; Leal, A.

    2013-07-01

    A new platform for the full Monte Carlo planning and an independent experimental evaluation that it can be integrated into clinical practice. The tool has proved its usefulness and efficiency and now forms part of the flow of work of our research group, the tool used for the generation of results, which are to be suitably revised and are being published. This software is an effort of integration of numerous algorithms of image processing, along with planning optimization algorithms, allowing the process of MCTP planning from a single interface. In addition, becomes a flexible and accurate tool for the evaluation of experimental dosimetric data for the quality control of actual treatments. (Author)

  20. Evaluation of the indexes of income yield capacity of energetic projects; Evaluacion de los indices de rentabilidad de proyectos energeticos

    Energy Technology Data Exchange (ETDEWEB)

    Villanueva M, C. [Facultad de Quimica, UNAM, 04510 Mexico D.F. (Mexico)

    2008-07-01

    An economic-financial model to evaluate in the class living room those indexes of profitability of projects of productive infrastructure of the energy sector was developed, as for example: generation projects, transmission and electric energy distribution; projects of transport and distribution of natural gas; projects of cogeneration of vapor and electricity; projects of refinement of petroleum; and other industrial projects. It is described the structure and operation of the pattern, which has been implemented in an Excel calculation sheet that the students use in their personal computers to apply it to the evaluation of the indexes of profitability, specified by the Secretaria de Hacienda y Credito Publico (SHCP) in their limits for the elaboration and presentation of the cost and benefit analysis of the programs and projects of investment of the public sector. The indicators are: present net value VPN, quotient benefits cost B/C, return internal rate TIR, and equivalent annual cost CAE, which should be calculated with methodological rigor according to the SHCP lineaments. The pattern uses the pre-programmed financial functions in the Excel calculation sheet to carry out the compute of the indicators starting from the effective flow of the projects. It is described the technician-economic configuration and the effective flows during the useful life of three power stations of electric power generation that are designed, builds and operated to sell electric power to the national interconnected system in a nodal marginal prices market: a hydroelectric one, a combined cycle power station that uses natural gas, and a nucleo electric. The effective flows are developed and the central profitability of three centrals are evaluated and they are also carried out the corresponding sensitivity analyses and indifference required by the SHCP in their lineaments. Finally, the conditions in that the projects should operate and the prices in those that should sell their production to the national interconnected system so that they are profitable are discussed. (Author)

  1. Una propuesta metodologica para la evaluacion del proceso de enseñanza-aprendizaje en un ambiente virtual

    Directory of Open Access Journals (Sweden)

    Fernandez, F.

    2007-07-01

    Full Text Available This article provides a methodological proposal oriented to optimize the assessment process of a student performance on an on line environment through the application of group communication techniques (advisor-student, student-advisor, studentstudent, student-chat and so on and widespread use of the new technologies on information and telecommunication as basic tools, based one the process follow-up and statistical data collection from the student´s learning performance and behaviour to enable the construction of significant and reliable indexes thus allowing the advisor a diagnostic on the student´s attitude and performance, allowing him to take on time the adequate preventive/corrective decision measures based on a success/failure tests outputs from the student performance, on a day- to- day basis, on the line environment.

  2. Evaluacion de una experiencia de formacion b-learning en el aprendizaje de tecnologias de la informacion y la comunicacion

    National Research Council Canada - National Science Library

    Monsalve-Gomez, Juan Carlos; Botero-Botero, Jaime Alonso; Montoya-Suarez, Lina Maria

    2014-01-01

    .... Para la recoleccion de la informacion participaron de forma voluntaria en el estudio 226 estudiantes del curso Competencias Fundamentales en TIC de la Fundacion Universitaria Luis Amigo, los cuales...

  3. Guia para la Elaboracion y Evaluacion de Proyectos de Investigacion (Guidelines for Reporting and Evaluating Research Projects).

    Science.gov (United States)

    Morles, Victor

    This article establishes guidelines for conducting and evaluating research projects according to a scientific methodology. The organizational format suggested here follows an outline with elements and details that should be considered in an investigation. Each part of the proposed outline is explained, and terms are defined. Project evaluation is…

  4. Estandarizacion de un bioensayo y evaluacion preliminar de tres formulaciones comerciales de Bacillus thuringiensis sobre Tuta absoluta (Lepidoptera: Gelechiidae)

    National Research Council Canada - National Science Library

    Ramirez, Lorena; Ramirez, Natalia; Fuentes, Luz Stella; Jimenez, Jaime; Hernandez-Fernandez, Javier

    2010-01-01

    .... La alternativa de utilizar biopesticidas contra esta plaga es de importancia creciente. En este estudio se evaluaron cinco metodos de bioensayo para medir adecuadamente la toxicidad sobre larvas de T...

  5. Evaluacion de que consister y por que se lleva acabo? (Evaluation: What Does it Consist of, and for What Purpose?).

    Science.gov (United States)

    Austin Independent School District, TX. Office of Research and Evaluation.

    A guide is presented for the evaluation of the bilingual programs in the Austin, Texas, Independent School District. The reasons for an evaluation and a definition of program objectives and evaluation instruments are given. The program components, objectives and evaluation instruments for each grade level (K-4) are listed. The components involved…

  6. [Quality analysis of clinical practice guidelines on cardiovascular risks in the Basque country and a proposal for their evaluacion].

    Science.gov (United States)

    Casi Casanellas, A; Aizpuru Barandiarán, F; Ibáñez Pérez, F

    2000-11-30

    To find the implantation and quality of clinical practice guidelines (CPG) to manage the major cardiovascular risks: tobacco dependency, hypertension, hyperlipaemia and diabetes mellitus. To work out a model to evaluate the quality of the CPG in primary care. Cross-sectional descriptive study. The primary care centres of the Basque Country. 170 CPG used at present to manage the four mentioned cardiovascular risks. Information was requested on the use of CPG and copies of their guidelines were requested from those in charge of 103 ranked centres. 77 centres replied (76%), of which 66 said they used one of them. A total of 170 CPG were received. On the basis of non-specific prior proposals for primary care, 21 quality criteria for the CPG, grouped in 6 blocks, were drawn up. Top quality was found in the block for clarity of clinical procedure with 63% compliance with the CPG, followed by general description (54%), and evaluation and measurement of impact (30%). The blocks with worst compliance were identification of people involved in their design (23%), evidence of their recommendations (19%) and conditions of application (4%). A model was proposed to evaluate the quality of the CPG. Major deficiencies in quality were found. These were most marked in key aspects such as bibliographic support for their recommendations, envisaging of conditions for application and identification of authors and reviewers.

  7. Evaluation of the shielding of dental X-rays units; Evaluacion del blindaje de unidades de rayos X dentales

    Energy Technology Data Exchange (ETDEWEB)

    Medrano, E.; Vega C, H. R.; Letechipia de L, C.; Hernandez D, V. M.; Salas L, M. A., E-mail: edumeco@yahoo.com.mx [Universidad Autonoma de Zacatecas, Apdo. Postal 336, 98000 Zacatecas (Mexico)

    2014-08-15

    The capacity of the walls of the dental radio-diagnostic rooms has been determined, to diminish the dose levels during the use of the X-rays equipment s. The study was carried out in the Dentistry Academic Unit of the campus Siglo X XI of the Universidad Autonoma de Zacatecas. The X-rays equipment s are a learning tool for the dentistry students and they are also used for offering health services to the population; for this reason is important to verify that the dose levels outside of the room walls are safe. During the evaluation process were used conservative approaches without prejudice of the thickness necessary in benefit of the radiological protection. Of the evaluation was found that all the walls satisfy their function thoroughly like barriers against the X-rays. (Author)

  8. Evaluation of adjustment functions in a heuristic algorithm; Evaluacion de funciones de ajuste en un algoritmo heuristico

    Energy Technology Data Exchange (ETDEWEB)

    Perusquia del Cueto, R.; Montes T, J. L.; Ortiz S, J. J.; Castillo M, A., E-mail: raul.perusquia@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2011-11-15

    At present the techniques of evolution al computation receive an increasing attention in the scientific and technological areas. This situation is due to its enormous potential in the optimization applied to problems of discussed computational complexity. In the nuclear area these techniques are used in diverse problems of combinatory optimization related with designing cores of power reactors. A distinctive characteristic of the evolution al and/or meta-heuristic algorithms is that appeal in each one from their applications to an adjustment function, fitness or of quality. This function allows to discriminate or to evaluate potentials solutions of the problem to solve. The definition of this situation is very important since it allows following the search of the algorithm toward different regions of the search space. In this work the impact that has the election of this function in the quality of the found solution is shown. The optimization technique by ant colonies or Acs (ant colony system) was used applied to the radial design of fuel cells for a boiling water power reactor. The notable results of the Acs allowed to propose the adjustment method of the importance and with this to obtain adjustment functions that guide the search of solutions of collective algorithms efficiently, basic capacity to develop the proposal of emulation of the natural selection and to investigate the possibility that on order of specify goals, to obtain the corresponding decision variables. A variety of re tro-exit (re tro-out) complementary process of feedback (re tro-in) that opens extended application perspectives of be feasible. (Author)

  9. English; Evaluacion de la dosis efectiva annual debido a fuentes ambientales de radiacion en la Provincia de Holguin, Cuba

    Energy Technology Data Exchange (ETDEWEB)

    Brigido Flores, Osvaldo; Barreras Cabellero, Aldo A.; Montalvan Estrada, Adelmo [Laboratorio de Vigilancia Radiologica Ambiental de Camaguey (Cuba)]. E-mail: sean@caonao.cmw.inf.cu; Hernandez Perez, Alberto; Tamayo, Luis Perez; Parra Valdes, Dermidio; Bravo Lopez, Rosendo [Centro de Atencion a la Actividad Nuclear, Holguin (Cuba); Zerquera, Juan Tomas [Centro de Proteccion y Higiene de las Radiaciones, La Habana (Cuba)

    2001-07-01

    A survey program aiming at studying the natural radioactivity in the Province of Holguin is a part of the national program carried out for 3 years. Radiological measurements carried out with a portable ionization chamber RSS-111 and RSS-112 at the sampled sites revealed an average outdoor absorbed dose rate of 43.5 nGy.h{sup -1} due to cosmic rays and terrestrial gamma radiation. Ratio of indoor to outdoor absorbed dose rates in air was 1.6. The average value of absorbed dose rate in air for the ionizing component of cosmic rays was 31.9 nGy.h{sup -1} at sea level. Because of the 82% of the Holguin population lives at altitudes close to sea level (10-200 m), the absorbed dose rate in outdoor air from ionizing component of cosmic rays was estimated to be 33.8 nGy.h{sup -1}. An annual average effective dose equivalent of 340 {mu}Sv was estimated for Holguin population due to the ionizing component of cosmic and gamma terrestrial radiation. This value is lower the 510 {mu}Sv.year{sup -1} estimated for the Camaguey population and lower than the 760 {mu}Sv.year{sup -1} estimated as a world average by UNSCEAR (1993). (author)

  10. Test de Evaluacion de Conocimientos Medicos-CIIPME (Test of Evaluation of Medical Knowledge-CIIPME). Publication No. 42.

    Science.gov (United States)

    Alfici, C.; And Others

    The purpose of this research is to build a test for the evaluation of the knowledge needed by medical students before entering clinical courses in medical school. The criterion for this was provided by teachers in both the pre-clinical and clinical subjects. The Pilot instrument consisted of 335 items that covered 8 sections. Each one of these…

  11. La interpretación de la realidad del destino por parte de los turistas: evaluaciones cognitivas y afectivas

    Directory of Open Access Journals (Sweden)

    María José Andrade Suárez

    2012-01-01

    Full Text Available En un contexto de intensa competitividad entre los destinos turísticos, la imagen percibida es un elemento clave y desempeña, a su vez, un papel fundamental en la elección del destino puesto que los valores que se asocian a ésta, representan un factor determinante en el proceso de decisión de compra de los potenciales turistas. Este hecho es debido a que la actitud del turista hacia un determinado destino es resultado de la percepción, reflejo de la imagen, que se ha formado del mismo. El objetivo general de este trabajo consiste en presentar un procedimiento para la identificación de la imagen percibida a priori del destino turístico. Con esta finalidad, se analizará el conjunto de componentes cognitivoafectivos que conforman la imagen del turismo rural en Galicia. Los resultados que se obtienen del estudio, realizado con un total de 400 cuestionarios a turistas rurales, demuestran que la imagen posee una naturaleza multidimensional que hace referencia tanto a las creencias y conocimientos que el turista posee sobre los atributos del destino (dimensión cognitiva como a los sentimientos de éste hacia ese lugar (dimensión afectiva.

  12. Operation evaluation of Venezuelan radiological service; Evaluacion del funcionamiento de un servicio de radiologia de un hospital venezolano

    Energy Technology Data Exchange (ETDEWEB)

    Padron, A.; Sanchez, A.; Martinez, V.; D' Alessandro, A.

    2006-07-01

    This work's intention is to evaluate the Radiology Service operation of Venezuelan hospital based on the Venezuelan Norms for the ionizing radiations use in medical diagnostic. The investigation's results show a violation of these norms. Therefore we propose some recommendations (about the personal and area dosimetry, medical equipment maintenance and calibration and the elaboration of procedures manuals) to be considered by the Institution to optimizing the Service's activities. (Author)

  13. The evaluation of Spanish environmental impact. Costs and limitations; La evaluacion de impacto ambiental en Espana. Coste y limitaciones

    Energy Technology Data Exchange (ETDEWEB)

    Canto, S.; Riera, P.; Borrego, A.

    2009-07-01

    The environmental impact assessment applies to new investments in public infrastructure and in industrial activities. The latter accounts for most of the environmental impact studies undertaken in Spain. This evaluation tool has a number of limitations and weaknesses, both in the analysis and its implementation. This article discusses some of these limitations, including the private cost of the process. (Author) 14 refs.

  14. Evaluation of the shielding of a room for radiodiagnostic; Evaluacion del blindaje de una sala para radiodiagnostico

    Energy Technology Data Exchange (ETDEWEB)

    Padilla R, Z. P. [Servicios de Salud de Zacatecas, Hospital de Especialidades en Salud Mental, Prolongacion 5 de mayo 1702-Sur, Parque Industrial, 98500 Calera de Victor Rosales, Zacatecas (Mexico); Acuna D, E.; Escareno J, E.; Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)

    2011-10-15

    The X-ray discovery by Roentgen in 1895 and its application in diagnosis was a breakthrough in medicine. Worldwide, X-ray technique is one of the most widely used procedures in medical diagnosis. At the Mental Health Hospital of Calera Zacatecas a room has been designed as radiology room, however there is not a record of shielding characteristics. In order to determine the features of X-ray equipment that the room can host, in this work a series of calculations were carried out. Calculations were based upon the NCRP 151 recommendations and fulfilling the requirements given in the Mexican standard NOM-229-SSA1-2002. From the actual room conditions this can host a X-ray equipment without fluoroscopy, with a workload of 80 ma-min/week, with 125 k Vp as maximum operating voltage. From the actual conditions a set of recommendations, for better protection of radiation workers and public are also given. (Author)

  15. Evaluation of the ionization quenching correction for several liquid scintillators; Evaluacion de la extincion por ionizacion para diversos liquidos centelleadores

    Energy Technology Data Exchange (ETDEWEB)

    Los Arcos, J. M.; Borras, C.

    1990-07-01

    The most appropriate computational model for the ionization quenching function Q(E) is analyzed for electrons in liquid scintillators. A numerical evaluation of Q(E) from 0.1 keV to 3 MeV which the kB parameter varying between 0.005 and 0.010 cm/MeV is presented for seven scintillators; Toluene, Toluene-Alcohol, PCS, Toluene-CCl4, INSTAGEL, Dioxane-Naphtalene and HISAFE II. The numerical result are summarized as tables of Ieast squares fitting coefficient which make easy the computation of Q(E). (Author)

  16. Evaluacion ex vivo de la retencion de estructuras en zirconia--ytria de procera[R] con diferentes cementos

    National Research Council Canada - National Science Library

    Mejia Bravo, Richard Milton; Catarroso Perez, Carlos Bernardo; Ruiz Restrepo, Xiomara Cristina; Espitia Mesa, Jose Fernando; Moreno Castillo, Jenny Alexandra; Montoya Sepulveda, Andres Felipe

    2014-01-01

    Introduccion: en tanto no se encuentra en la literatura un protocolo fundamentado de cementacion para restauraciones elaboradas en zirconia-ytria, el proposito de este estudio fue evaluar ex vivo la retencion...

  17. Evaluacion de la sintomatologia negativista desafiante en ninos de seis a ocho anos: concordancia entre padres y maestros

    National Research Council Canada - National Science Library

    Angulo Rincon, Rosalba; Ballabriga, Maria Claustre Jane; Bonillo Martin, Albert; Vinas Poch, Ferran; Corcoll- Champredonde, Agnes; Gonzalez Rodriguez, Gustavo; Zepeda Burgos, Raquel Marina; Dos Santos Perez, Neuza Cristina; Carbones, Jaume

    2010-01-01

    El objetivo principal de este estudio es conocer el grado de concordancia entre los informes proporcionados por padres y maestros acerca de la sintomatologia negativista desafiante en ninos en edad escolar (6-8 anos...

  18. La evaluacion de la percepcion de la comunicacion emocional de los padres en ninos desde la neuropsicologia

    National Research Council Canada - National Science Library

    Guaita, Valeria Laura

    2010-01-01

    .... Por ello, resulta importante comprender como se desarrolla el proceso de adquisicion de las competencias emocionales que se refieren a las habilidades que permiten cumplir eficazmente objetivos...

  19. Evaluacion de diferentes estrategias para extraer y preconcentrar penicilinas presentes en leche previa determinacion por Electroforesis Capilar

    National Research Council Canada - National Science Library

    Ysabel Pinero, Maria; Jurado, Natividad; Bauza, Roberto; Arce, Lourdes; Valcarcel, Miguel

    2014-01-01

    ... (llamada asi por sus siglas en ingles: Quick, Easy, Cheap, Effective, Rugged y Safe). En general, el tratamiento de la muestra de leche incluyo la precipitacion de proteinas previo a la preconcentracion...

  20. Desarrollo y evaluacion psicometrica de una forma abreviada de la escala de posicionamiento ante el diagnostico enfermero

    Directory of Open Access Journals (Sweden)

    Jose Manuel Romero-Sanchez

    2013-06-01

    Full Text Available El Position on Nursing Diagnosis (PND es una escala que utiliza la técnica del diferencial semántico para medir las actitudes hacia el concepto diagnóstico enfermero. El estudio objetivó desarrollar una forma abreviada de la versión española de esta escala, evaluar sus propiedades psicométricas y eficiencia. Se utilizó un doble enfoque empírico-teórico para obtener una forma reducida del PND, el PND-7-SV, que fuera equivalente a la original. Mediante un diseño transversal a través de encuesta, se evaluó la fiabilidad (consistencia interna y fiabilidad test-retest, validez de constructo (análisis factorial exploratorio, técnica de grupos conocidos y validez discriminante y de criterio (validez concurrente, sensibilidad al cambio y eficiencia del PND-7-SV en una muestra de 476 estudiantes de enfermería españoles. Los resultados avalaron la utilidad del PND-7-SV para medir las actitudes hacia el diagnóstico enfermero de manera equivalente a la forma completa de la escala y en un tiempo más reducido.

  1. Reconnaissance evaluation of Honduran geothermal sites. Una evaluacion por medio de reconocimiento de seis areas geotermicas en Honduras

    Energy Technology Data Exchange (ETDEWEB)

    Eppler, D.; Fakundiny, R.; Ritchie, A.

    1986-12-01

    Six geothermal spring sites were selected on the basis of preliminary investigations conducted in Honduras over the last decade and were evaluated in terms of their development potential. Of the six, the Platanares and San Ignacio sites have high base temperatures and high surface fluid discharge rates and appear to have the best potential for further development as sources of electrical power. A third site, Azacualpa, has a high enough base temperature and discharge rate to be considered as a back-up, but the logistical problems involved in geophysical surveys make it less attractive than the two primary sites. Of the remaining three sites, Pavana may be a source of direct-use heat for local agricultural processing. Sambo Creek and El Olivar have either severe logistical problems that would impede further investigation and development or base temperatures and flow rates that are too low to warrant detailed investigation at this time.

  2. Evaluaciones calorimétricas de la precipitación en aleaciones Cu-Co-Si, ricas en Cu

    Directory of Open Access Journals (Sweden)

    Donoso, Eduardo

    2001-08-01

    Full Text Available The precipitation process of cobalt and silicon atoms from supersaturated solid solutions of Cu-Co-Si for two compositions was studied by differential scanning calorimetry (DSC. Calorimetric traces analysis showed the presence of two overlapping exothermic reactions (stages 1 and 2, which can are attributed to two precipitation processes. First stage correspond to the preceding formation of a cobalt precipitate, while the second stage correspond to the formation of stoichiometric CO2Si composition which takes place by silicon diffusion to the first precipitate. Heat contents during the stages 1 and 2 are proportional to precipitates volume fractions. Activation energies of both precipitates, calculated from the Kissinger method, are consistent with those corresponding to diffussion of Co in Cu and Si in Cu. Both processes can be decribed by the Johnson-Mehl Avrami (JMA equation. Values of n are compatible with precipitate nucleation from the solid solution (stage 1 and with growth of paticles from preexisting Co precipitates. Furthermore,, the kinetic of the concentration decay of Co and Si in the matrix was estimated as function of the transformated fraction for each thermal event and from their respective volume fractions.

    Mediante calorimetría diferencial de barrido (DSC se estudió el proceso de precipitación de átomos de cobalto y silicio a partir de dos soluciones sólidas supersaturadas de Cu-Co- Si. El análisis de las trazas calorimétricas muestra la presencia de dos reacciones exotérmicas traslapadas (etapas 1 y 2, que se interpretan como la formación de dos tipos de precipitados. La primera etapa corresponde a la formación precursora de un precipitado de cobalto, en tanto que la etapa 2 corresponde a la formación de un precipitado de composición estequiométrica CO2Si producido por difusión de silicio hacia la primera partícula. Los calores liberados durante las etapas 1 y 2 son proporcionales a las fracciones volumétricas de los precipitados. Las energías de activación de ambas reacciones, calculadas por el método de Kissinger, son consistentes con aquellas correspondientes a la difusión de Co en Cu y Si en Cu, respectivamente. Ambos procesos pueden ser descritos mediante la ecuación de Johnson-Mehl-Avrami (JMA, cuyos valores de n son cornpatibles con la nucleación de precipitados a partir de la solución sólida (etapa 1 y con crecimiento de partículas a partir de precipitados pre

  3. Evaluation of radioactive facilities safety using event trees; Evaluacion de la seguridad de instalaciones radiactivas utilizando arboles de evento

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez Saiz, A.; Cornejo Diaz, N.; Callis Fernandez, E.

    2004-07-01

    The validity of using the Event Trees as an adequate quantitative analysis model for doing radiological safety assessments of radioactive facilities is presented in this work. The radiological safety assessments made for four Departments of Radiotherapy (Teletherapy with Co-60 and High Dose Rate afterloading brachytherapy with Ir-192) from different hospitals were taken as the base for the analysis. By the use of this model were obtained quantitative results. The probabilities to reach a typical scenario in a first stage, and then, based on previously doses calculations in the same scenario, the total risk values, were obtained. The unauthorized entry into a radiation room while the source is in its fully exposed position was the main scenario identified. The numerical values obtained using this model supported the radiological safety assessments made during the licensing process of those installations. The analysis of the intrinsic safety systems of the radiotherapy equipments was not included in the study because it's design was accepted by the Regulatory Authority and also meet the criterion of proven effectiveness. The use of this model let us suggest modifications such as the adding of any component to the system and/or the change of its position in order to minimize the probability of reaching the mentioned scenario. The model is also useful to confirm that the present international requirements for the safety systems in this type of facilities lead to practices with better or similar total risk levels than others considered as safe. (Author)

  4. Evaluation of air pollution due to natural radioactive elements; Evaluacion de contaminacion del aire debido a elementos radiactivos naturales

    Energy Technology Data Exchange (ETDEWEB)

    Perez, B. A.; Lopez, M. E., E-mail: bertin.perez@pucp.edu.pe [Pontificia Universidad Catolica del Peru, Seccion Fisica, Av. Universitaria 1801, San Miguel, Lima (Peru)

    2014-08-15

    The presence of radioactive materials in the crustal and as consequence present in the surface, originate the natural radioactive contamination in the different solid, liquid and gaseous materials; particularly in the air that we breathe. Among these radioactive materials that contribute to the environmental pollution are the presences of uranium, radio, thorium and their respective disintegration chains, as the gas radon (Rn-222) that spreads in the air; whose presence increases in areas where the seismic activity is notorious or other natural events take place, case of the Lima (Peru) City. In this work we show the measurements realized during two consecutive years in the roof of a building of three floors in the Lima City, with the purpose of establishing the fluctuations of this gassy pollutant in the surrounding air. The measurements were made using nitrocellulose detectors (Lr-115 type 2) applying the nuclear prints technique. The obtained results allowing to have an indicator of the Rn-222 presence in the air during different seasons of the year and also the presence of other possible radioactive pollutants. The use of this technique allows obtaining and studying the prints that generate the alpha particles that are emitted during the Rn-222 disintegration or by means of their descendants or predecessors; also allowing to discriminate between the short-range tracers or lineal type prints and other very different prints obtained during some of the measurements. The results analyzed according to proposed models are presented in this work. (author)

  5. Thermomechanical evaluation of the fuel assemblies fabricated in the ININ; Evaluacion termomecanica de los ensambles combustibles fabricados en el ININ

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez L, H.; Ortiz V, J. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-07-01

    The pilot plant of fuel production of the National Institute of Nuclear Research (ININ) provided to the Laguna Verde Nuclear Power Plant (CNLV) four fuel assemblies type GE9B. The fuel irradiation was carried out in the unit 1 of the CNLV during four operation cycles, highlighting the fact that in their third cycle the four assemblies were placed in the center of the reactor core. In the Nuclear Systems Department (DSN) of the ININ it has been carried out studies to evaluate their neutron performance and to be able to determine the exposure levels of this fuels. Its also outlines the necessity to carry out a study of the thermomechanical behavior of the fuel rods that compose the assemblies, through computational codes that simulate their performance so much thermal as mechanical. For such purpose has been developing in the DSN the FETMA code, together with the codes that compose the system Fuel Management System (FMS), which evaluates the thermomechanical performance of fuel elements. In this work were used the FETMA and FEMAXI codes (developed by JAERI) to study the thermomechanical performance of the fuel elements manufactured in the ININ. (Author)

  6. Assessment tool for planning fallback Tomotherapy treatment plans; Evaluacion de la herramienta fallback planning para planes de tratamiento de tomoterapia

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Rubio, P.; Rodriguez Romero, R.; Montes Uruen, A.

    2015-07-01

    Interruption of radiotherapy treatments in an increase the total time of the same to the detriment of tumour control. In centers that have a unique special unit as the TomoTherapy, is emphasized the difficulty to resume treatment at another unit, since the technique of helical TomoTherapy is not portable to conventional accelerators and therefore requires the planning of new dosimetry distributions emulating the initially obtained and accepted. This work evaluates the ability of an automatic planning tool to mimic TomoTherapy plans. (Author)

  7. Evaluacion de la sintomatologia depresiva en poblacion mayor con perdida visual: un estudio de la Escala de Depresion Geriatrica

    National Research Council Canada - National Science Library

    Ferrando Piera, Pere Joan; Pallero, Rafael; Anguiano-Carrasco, Cristina; Montorio, Ignacio

    2010-01-01

    El presente estudio tiene dos objetivos principales: (a) evaluar la adecuacion y funcionamiento de la Escala de Depresion Geriatrica en su version espanola en la poblacion mayor con deficit visual, y (b...

  8. Photochemical degradation of emerging contaminants by solar processes: analytical assessment; Degradacion fotoquimica de contaminantes emergentes mediante procesos solares. Evaluacion analitica

    Energy Technology Data Exchange (ETDEWEB)

    Perez Estrada, L. A.; Aguera Lopez, A.; Malato Rodriguez, S.

    2009-07-01

    In recent years, the presence of pharmaceuticals in the aquatic environment has reached a growing interest. These new contaminants are important because many of them are not degraded under the typical biological treatments applied in the wastewater treatment plants and represent a continuous input into the environment. Thus compounds such as diclofenac, dipyrone and malachite green are present in surface waters in all Europe and crucial need for more enhanced technologies that can reduce its presence in the environment has become evident. In this sense, solar advanced oxidation processes represent a good choice for the treatment of hazardous non-biodegradable pollutants. This work deals with the solar photodegradation of these contaminants in aqueous solutions by TiO{sub 2} photo catalysis and photo-Fenton reaction. A pilot-scale facility using a compound parabolic collector (CPC) reactor was used for this study. Results obtained show rapid and complete oxidation of parent compounds and partial mineralization of dissolved organic carbon. The two treatment are compared on the basis of their kinetics (parent compound and TOC), formation of degradation products (as determined by ionic chromatography, GC/MS and LC/TOF-MS), and toxicity (as evaluated by Vibrio fischeri bacteria). (Author)

  9. Creacion y validacion de un protocolo de evaluacion forense de las secuelas psicologicas de la violencia de genero

    National Research Council Canada - National Science Library

    Arce, Ramon; Farina, Francisca; Carballal, Alicia; Novo, Mercedes

    2009-01-01

    .... Para conocer las aptitudes y modos de deteccion de la simulacion en casos de violencia de genero, planificamos una investigacion en la que solicitamos a 101 mujeres que simularan la huella psiquica...

  10. EVALUACION DE RECURSO SOLAR EN CHILE: APOYO EN LA TOMA DE DECISIONES Y FORMULACION DE ESCENARIOS ENERGETICOS

    OpenAIRE

    ESCOBAR MORAGAS, RODRIGO ALFONSO

    2008-01-01

    El proyecto desarrollará una herramienta que permita caracterizar la radiación solar incidente en terreno chileno, a través de técnicas de estimación mediante procesamiento de imágenes satelitales. Los datos públicos existentes en la actualidad son antiguos, de gran incertidumbre, y corresponden a mediciones realizadas en estaciones solarimétricas terrestres, la que sólamente son válidas en las cercanías de la estación. Por lo tanto, el primer paso para lograr un desarrollo de la Energía Sola...

  11. Evaluacion del grado de microfiltracion en restauraciones de resina compuesta, comparando dos sistemas adhesivos tras diferentes periodos de envejecimiento

    National Research Council Canada - National Science Library

    Molina Pule, Carla Grimaneza; Velasquez Ron, Byron Vinicio; Marina Falconi Borja, Gabriela; Del Carmen Armas Vega, Ana

    2016-01-01

    Introduccion: el exito clinico de los sistemas adhesivos esta basado en el empleo de un acido responsable de crear microporosidades en la estructura dental, asi se plantea evaluar in vitro el grado...

  12. Evaluacion del manejo farmacologico de la Osteoporosis y la Osteopenia en una institucion de regimen especial de Bogota

    National Research Council Canada - National Science Library

    Susan Dayana Moncayo Bravo; José Julián López Gutiérrez

    2015-01-01

      Objetive To evaluate habits related to the prescription of drugs used in the treatment of osteoporosis and osteopenia in a health institution in Bogota as compared to two international clinical practice guidelines...

  13. Evaluacion del efecto sanitizante de un extracto biodegradable obtenido de la especie Solanum marginatum, de uso etnobotanico en Boyaca

    National Research Council Canada - National Science Library

    Garcia Colmenares, Mauricio; Castellanos Corredor, Maria Cristina

    2011-01-01

    Las plantas del genero Solanum, dentro del que se encuentra el "lulo de perro" (Solanum marginatum), especie considerada una maleza, contienen saponinas, las cuales tienen propiedades de emulsionar la grasa, similares al jabon...

  14. Evaluacion de la contaminacion de las aguas subterraneas en la zona de Pance. informe 92,49

    OpenAIRE

    CVC- Corporación Autónoma Regional del Cauca

    1991-01-01

    El acelerado desarrollo urbanístico en la zona suburbana de Pance ubicada en el corregimiento La Viga, al sur de Cali, y ante la ausencia de servicios públicos como acueducto y alcantarillado, ha suscitado un incremento en el aprovechamiento de las aguas subterráneas de la zona como fuente de abastecimiento de agua potable.

  15. Evaluacion de las caracteristicas del fruto de huizache para su posible uso en curtiduria o alimentacion animal

    National Research Council Canada - National Science Library

    Barrientos-Ramirez, Lucia; Vargas-Radillo, J. Jesus; Rodriguez-Rivas, Antonio; Ochoa-Ruiz, Hector Guillermo; Navarro-Arzate, Fernando; Zorrilla, Jose

    2012-01-01

    .... La semilla cruda presento 23,0% en proteina, superior al encontrado en cascara, de 14,9%. Los aminoacidos presentes en mayor proporcion fueron histidina, valina, treonina, leucina e isoleucina, mientras que lisina y metionina+...

  16. The remuneration and performance evaluation of Spanish innovative firms; La retribucion y la evaluacion del desepeno en empresas innovadoras espanolas

    Energy Technology Data Exchange (ETDEWEB)

    Camelo Ordaz, C.; Fernandez Alles, M. L.; Valle Cabrera, R.

    2010-07-01

    This paper reviews the theoretical basis about the agency problem and the governance mechanisms utilised in order to reduce it. After explaining briefly other mechanisms to reduce agency problem, the paper focuses on the role of board of directors, analysing its functions and responsibilities. Finally, we explore the boards of directors of a Spanish sample over the period of 2004 through 2008, showing the fulfilment's degree of Unified Code's recommendations of 2006. (Author) 44 refs.

  17. La evaluacion de la docencia ante el reto del espacio europeo de educación superior (EEES

    Directory of Open Access Journals (Sweden)

    Carmen Calderón Patier

    2008-01-01

    Full Text Available El principal objetivo del proceso de convergencia de la enseñanza superior que estamos viviendo, en el marco del Espacio Europeo de Educación Superior (EEES, es convertir a los sistemas universitarios europeos en un referente internacional por la calidad de la enseñanza impartida. Ello exige una revisión, actualización y adaptación de las actuales metodologías docentes y de su organización, así como del establecimiento de técnicas y prácticas que permitan evaluar integralmente la enseñanza. En este contexto, el presente trabajo se analizan los tres pilares de la evaluación de la educación superior: en primer lugar, la evaluación del alumnado (o del aprendizaje según las diferentes formas alternativas de evaluación de los resultados de los alumnos, en segundo lugar, la evaluación de la actividad docente, analizando las ventajas e inconvenientes de las encuestas de opinión, y por último la evaluación institucional de la docencia

  18. Evaluation of glass leaching as nutrient source for microalgae growth; Evaluacion del comportamiento de vidrios lixiviados como nutrientes de algas

    Energy Technology Data Exchange (ETDEWEB)

    Grabska, N.; Tamayo, A.; Mazo, M. A.; Pascual, L.; Rubio, J.

    2015-10-01

    Three glasses with an elemental composition similar to the nutrient ratio required for Spirulina platensis growth and with different SiO{sub 2} content have been prepared. The glasses were crushed and sieved into 2 different fractions and the effect of the particle size has been studied in terms of the leaching kinetics of each element. The chemical analysis of the leaching water was used for obtaining the dissolution rate curves for each element taking part of the glass composition. From the calculation of the leaching rate constant and the exponential constant of the lixiviation reaction, it has been evaluated the Spirulina platensis growth in ambient normal conditions of light, temperature and pH of the growing media. It has been concluded that, either from the modification of the chemical composition of the glass or its particle size, it is possible to tune the delivery of the nutrients to match the growth rate of Spirulina platensis. (Author)

  19. Evaluacion del factor central y periferico en fatiga muscular en pacientes com daño piramidal

    Directory of Open Access Journals (Sweden)

    Carlos G. Schutz

    1983-09-01

    Full Text Available Para evaluar algunos de los componentes de la fatiga muscular en el daño piramidal, se seleccionó un grupo de 15 pacientes con hemiparesia faciobraquiocrural de severidad variable, los cuales fueron sometidos a un esfuerzo muscular, durante el cual se evaluaron los cambios de la frecuencia y duración de los potenciales positivos y negativos del EMG, asi como los sufridos por la onda M máxima al principio y fin del mismo. El estudio fue realizado en el lado parético, el contralateral y en un grupo control de voluntarios sanos, comparándose los resultados de los 3 grupos. Las curvas de frecuencia y duración del lado parético, el sano y el control mantuvieron las mismas tendencias, así como fue homologable el comportamiento de la onda M máxima en los 3 casos, lo cual indica que en la espasticidad, debido a daño de la vía piramidal, al igual que en la población normal, bajo las presentes condiciones de estudio, es el factor central el condicionante principal en el desarrollo de fatiga muscular.

  20. Evaluacion del factor central y periferico en fatiga muscular en pacientes com daño piramidal

    OpenAIRE

    Carlos G. Schutz; Marcela E. Panizza; L. G. Cohen; R. Rey; Olga P. Sanz

    1983-01-01

    Para evaluar algunos de los componentes de la fatiga muscular en el daño piramidal, se seleccionó un grupo de 15 pacientes con hemiparesia faciobraquiocrural de severidad variable, los cuales fueron sometidos a un esfuerzo muscular, durante el cual se evaluaron los cambios de la frecuencia y duración de los potenciales positivos y negativos del EMG, asi como los sufridos por la onda M máxima al principio y fin del mismo. El estudio fue realizado en el lado parético, el contralateral y en un g...

  1. Propuesta de un modelo financiero para la evaluacion de la inversion en un aeropuerto bajo asociacion publico-privada

    National Research Council Canada - National Science Library

    Gonzalez-Ruiz, Juan David; Echeverri-Gaviria, Sebastian; Ospina-Rendon, Diego Alejandro

    2014-01-01

    La administracion de un aeropuerto implica cierto nivel de complejidad, para lo cual los Estados hacen uso de alianzas publico-privadas para delegar esta responsabilidad a entidades concesionarias especializadas...

  2. Dosimetric evaluation of Radiotherapy units wit {sup 60}Co; Evaluacion dosimetrica de unidades de radioterapia con {sup 60}Co

    Energy Technology Data Exchange (ETDEWEB)

    Leon, B. Salinas de; Tovar M, V.; Becerril V, A. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2000-07-01

    The SSDL network of the IAEA performs, every year, quality audit tests for radiotherapy services ({sup 60} Co units and linear accelerators), and for national SSDL as well. Because of the SSDL-Mexico results in these tests and due to our enthusiasm and confidence in our work, a parallel test has been done , which is described in this talk as well as the results. Nowadays, a second parallel test goes up, which could confirm our optimism and open the possibility to our country to start a national dosimetric audit of {sup 60} Co radiotherapy units. (Author)

  3. Evaluacion del suministro de medicamentos en los servicios de atencion primaria de salud de Rosario, Argentina, 2005

    National Research Council Canada - National Science Library

    Botta, Carina A

    2009-01-01

    Metodos. Se utilizo una combinacion de varias herramientas de gestion: analisis de Pareto para determinar el peso de los diferentes medicamentos en el presupuesto de la Secretaria de Salud Publica del municipio de Rosario...

  4. Evaluacion de las condiciones de extraccion por hidrodestilacion -cohobacion del aceite esencial del follaje de Pinus caribaea Morelet var. caribaea

    National Research Council Canada - National Science Library

    Fernandez-Sanchez, Felix; Marin-Moran, Jorge Eric; Teixeira-Pinto, Zeneida; de Carvalho-Queiro, Margareth Maria; Escalona-Arranz, Julio Cesar

    2013-01-01

    ...) del aceite esencial del follaje de Pinus caribaea Morelet var. caribaea (droga seca). Los factores estudiados en el proceso de extraccion fueron el tamano de particula (1,25; 0,6; 0,25 y 0,18 mm...

  5. EVALUACION DE ASPECTOS INMUNOLOGICOS Y DESARROLLO DE UN MODELO MURINO DE LA OBSTRUCCION RECURRENTE DE LAS VIAS AEREAS EN EQUINOS

    OpenAIRE

    MORAN RUZ, GABRIEL ROBERTO; MORAN RUZ, GABRIEL ROBERTO

    2008-01-01

    La Obstrucción Recurrente de las Vías Aéreas (ORVA) es consecuencia de un proceso inflamatorio originado por la inhalación de agentes alergénicos. Esta condición, debido a los mecanismos inmunológicos que intervienen en la patogénesis tiene alguna similitud con el asma humana. Esta patologia también fue conocida como Enfermedad Pulmonar Obstructiva Crónica (EPOC) (Jackson y col 2000). Pero según Robinson (2001), el término EPOC es inapropiado para describir este cuadro, ya que el tipo de r...

  6. El programa de estudios: Naturaleza, objectivos, planeamiento, aplicacion y evaluacion (Curriculum: Its Nature, Objectives, Planning, Application, and Evaluation).

    Science.gov (United States)

    Martinez, Maria L., Comp.

    A proposal is advanced to the Latin American nations by the Department of Educational Affairs, Organization of American States (OAS), for a joint program of enacting educational reform. As mediator, the OAS recommends as an initial step the distribution of various publications offering information on actual educational programs currently in…

  7. P-{Delta} effects on the reliability of oil offshore jacket platforms in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    De Leon-Escobedo, D. [Universidad Autonoma del Estado de Mexico, Toluca, Estado de Mexico (Mexico)]. E-mail: daviddeleonescobedo@yahoo.com.mx; Campos, D. [Instituto Mexicano del Petroleo (Mexico)]. E-mail: dcampos@imp.mx

    2012-07-15

    Given the important economic consequences of an oil platform failure, all the aspects of its structural behavior and safety issues need to be carefully considered. In particular, P-{Delta} effects on the deck legs of marine offshore jacket platforms may be relevant when the deck height and the vertical load are significant. In this paper, the impact of the moment amplification, due to slenderness of the deck legs, on the platform safety is examined and appraised from the viewpoint of the structural reliability. The formulation is applied to a typical tall deck marine platform under the environmental loading at the Bay of Campeche, Mexico, and its reliability index is calculated with and without the P-{Delta} effect. The results presented herein may be used to improve the current practice in the design and assessment of offshore marine platforms in Mexico and to update the current version of the code. [Spanish] Dadas las importantes consecuencias economicas de la falla de una plataforma petrolera, todos los aspectos de su comportamiento estructural y aspectos de seguridad necesitan considerarse cuidadosamente. En particular, los efectos P-{Delta} en las piernas de la cubierta de plataformas marinas costa fuera petroleras tipo jacket pueden ser relevantes cuando la altura de la cubierta y la intensidad de cargas verticales son significativas. En este articulo se examina el impacto que sobre la seguridad de la plataforma tiene la amplificacion de momentos, debido a la esbeltez de las piernas de la cubierta, y se evalua este impacto desde el punto de vista de confiabilidad estructural. La formulacion se aplica a una plataforma marina tipica, con cubierta alta, bajo la carga ambiental de la Bahia de Campeche, Mexico y se calcula su indice de confiabilidad con y sin el efecto P-{Delta}. Los resultados presentados aqui pueden usarse para mejorar las practicas actuales de diseno y evaluacion de plataformas marinas costa fuera en Mexico y para actualizar la version actual

  8. Automation and remote control of waste-water treatment plants. Application to the WWTP of Genoa-Sturla; Automazione e telecontrollo degli impianti di trattamento per reflui urbani. Applicazioni nell'impianto di Genova-Sturla

    Energy Technology Data Exchange (ETDEWEB)

    Bonvicini, V.; Siri, R.; Sammartino, P. [Azienda Mediterranea Gas e Acqua, Genoa (Italy); Capodaglio, A.G.; Cavagliano, P. [Pavia Univ., Pavia (Italy). Dipt. di Ingegneria Idraulica e Ambientale

    2001-08-01

    'impianto e' stato organizzato in maniera che possa risultare di utilita' operativa all'Ente gestore per ottimizzare il rendimento dei processi depurativi, per migliorare ulteriormente la gestione tecnico-economica e per prevenire o affrontare con tempestivita' eventuali occasionali malfunzionamenti.

  9. 78 FR 68357 - Airworthiness Directives; Aermacchi S.p.A. Airplanes

    Science.gov (United States)

    2013-11-14

    ... Mandatory Bollettino Tecnico (English Translation: Technical Bulletin) No. 205B65, Revision 1, dated... (English Translation: Technical Bulletin) No. 260SB-136, Revision 1, dated November 12, 2012. The actions... Aermacchi Una Societa Finmeccanica Mandatory Bollettino Tecnico (English Translation: Technical Bulletin) No...

  10. Energy saving and diversification in local administration: workshop for energetic municipal managers and technicians. Ahorro diversificacion de energia en la administracion local: seminario para tecnicos y gestores energeticos municipales

    Energy Technology Data Exchange (ETDEWEB)

    1994-01-01

    This book contains the conference of Seminar held in Madrid about Energetic save and diversification in local administration. The Seminar was articulated in five theme: four areas of technic scope and one of management scope. The technical scope has many conferences about energetic efficiency in lighting, municipal facilities, telemanagement, energetic save. cogeneration and solar energy. The management scope presents the organization of municipal technical service in Barcelona, Sevilla, Tenerife (Spain).

  11. Electricity by anaerobic digestion of vinasse from sugar cane. Technical profile, economic and environmental impacts of an option; Eletricidade por digestao anaerobia da vinhaca de cana-de-acucar. Contornos tecnicos, economicos e ambientais de uma opcao

    Energy Technology Data Exchange (ETDEWEB)

    Rego, Erik Eduardo; Moral Hernandez, Francisco del [Universidade de Sao Paulo (PIPGE/IEE/USP), SP (Brazil). Inst. de Eletrotecnica e Energia. Programa Interunidades de Pos-Graduacao em Energia

    2006-07-01

    In its first part this article brings up the growing importance of biomass in Brazilian and within the world energy scenario, especially due to the higher environmental consciousness related to the use of renewable energy sources. It also discusses about biomass sustainability and its myths. The Brazilian case shows that the usage of biomass is mixed to the use of sugar cane. The studies in this area are essentially directed to the production of ethanol and the burn of the solid waste production in steam generators. This article focuses on a specific liquid effluent product: the vinasse. The use of vinasse in agriculture as liquid fertilizer is not new. This article studies the technical, economical and environmental viability of the biogas production obtained from the anaerobic digestion of vinasse in order to generate electricity. The reactor under analysis is the UASB (Upflow Anaerobic Sludge Blanket) and a case study of a experimental process linked to alcohol production is used as a base to put side by side some points of view. Finally this article discusses how environmental regulations related to the effluent disposal (and their differences between two states in Brazil) were really trade-off issues in the decision making from the economical perspective. The combinations of the analysis (technical, economical and environmental) contributes for the global dimension of the alternative. (author)

  12. Technical and quality requisites (RTC's) 'a data architecture'; Requisitos tecnicos y de calidad (RTC' s) 'una arquitectura de datos'

    Energy Technology Data Exchange (ETDEWEB)

    Munoz G, R.; Jimenez R, B.; Ahedo A, S. [ININ, 52750 La Marquesa, Estado de Mexico (Mexico)]. e-mail: rmg@nuclear.inin.mx

    2007-07-01

    The RTC's are notes of technical and of quality requisites that the CLV emits, according to validity procedures of the Nuclear power station, to specify purchasing requisites of equipment with quality assurance category. This document contains a description of the computer program application RTC's, elaborated by the ININ for the CLV that allows to capture and to process the information of a database whose purpose is to facilitate the elaboration of the RTC's. Details of its development process are included. (Author)

  13. Analysis of the technical potential for carbon capture and geological sequestration in the oil sector of Brazil; Analise do potencial tecnico do sequestro geologico de CO{sub 2} no setor petroleo no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Isabella Vaz Leal da

    2009-02-15

    This thesis focuses on the technologies related to CO{sub 2} capture and geological storage. The main objective of this study is to perform an analysis of the technical potential of geological sequestration of CO{sub 2} in the oil and gas sector in Brazil. Climate changes are directly related to emissions of greenhouse gases. Mainly, are related to increased carbon dioxide emissions due to the use of fossil fuels. To mitigate climate changes there are technologies that have the purpose of promoting the reduction of emissions of greenhouse gases such as the Geological Sequestration of CO{sub 2}. Thus, the study presents a description of the stages of the geological sequestration of CO{sub 2} and the state of the art of the technology in Brazil and worldwide. In addition, is presented the capacity for storage of the Brazilian sedimentary basins. Finally, this thesis analyzes the application of the described technologies in two stationary sources of great importance: refineries and oil and gas production fields. (author)

  14. Feasibility. Technical and financial concepts to determine the feasibility of a self-supplying project; Factibilidad. Conceptos tecnicos y financieros para determinar la factibilidad de un proyecto de autoabastecimiento

    Energy Technology Data Exchange (ETDEWEB)

    Vargas A, Enrique [IGSA S.A. de C.V. (Mexico)

    2005-07-01

    The co-generation is the transformation of an energy source to two or more forms. This document deals with the co-generation equipment: gas turbines, steam turbines and reciprocating motors. It also provides a comparison between turbines and motors altogether with an analysis determining how the savings in the co-generation are obtained -an analysis dealing with thermal balance, the advantage of the radiation, the heat of the oil, the heat of the coolant, the exhaust heat and the production cost of 1 kwh. [Spanish] La cogeneracion es la transformacion de una fuente de energia a dos o mas formas. En este documento se analizan los equipos de cogeneracion: turbinas de gas, turbinas de vapor y motores reciprocantes, de la comparacion entre turbinas y motores, de como se logran los ahorros en la cogeneracion, del balance termico, el aprovechamiento de la radiacion, del calor del aceite, del calor del refrigerante, del calor del escape y del costo en la produccion de 1 kwh.

  15. NucleoRed - Computerized system for increasing the effectiveness of the technical administrative conduct of the Laguna Verde Central; NucleoRed - Sistema computarizado para incrementar la efectividad de la gestion tecnico-administrativa de la Central Laguna Verde

    Energy Technology Data Exchange (ETDEWEB)

    Luna D, J. [Central Nucleoelectrica Laguna Verde, Carretera cardel-Nautla Km. 42.5 Veracruz (Mexico)]. e-mail: jluna@cfe.gob.mx

    2003-07-01

    The on-line systems for the management of the Laguna Verde Central (CLV) have had the challenge to evolve from the PC's of first generation until emigrate to the new Internet technologies, so that they allow to the diverse work groups to have the computer tool that allows them to gather the necessary data and to carry out efficiently the analysis of their results. To confront the previous challenge, in the CLV it has been developed and implemented the Nucleo Red that is an on-line system with the objective of providing in it lines strategic information for the Technician-administrative management of the plant in the nuclear context. The Nucleo Red is the computational tool that reflects the technical administrative processes implemented by personnel of the different Operative departments, it seeks to cooperate to the reliable and efficient operation of the first nucleo electric central of Mexico, with technology and Mexican personnel the one which already it had received international recognitions. The perspective of this computer system is to continue inside the process of continuous improvement and that although it was designed for a nucleo electric plant it can also be taken to the conventional plants of generation of electric power, so that this technology can be taken advantage of in other non nuclear facilities. The objective of the present work, is to show the new modules that have been developed in the Nucleo Red, its operation in general, and the benefits that it presents its use. (Author)

  16. Technical-economical, agronomical, pedological, hygienic and normative aspects of municipal wastewater sludges; Aspetti tecnico-economici, agronomici, pedologici, igienico-sanitari e normativi dei fanghi di depurazione civile

    Energy Technology Data Exchange (ETDEWEB)

    Ottavi, C. [ENEA, Rome (Italy). Dip. Ambiente; Ottaviani, M. [Istituto Superiore di Sanita, Rome (Italy). Lab. di Igiene Ambientale; Figliolia, A. [Istituto Sperimentale per la Nutrizione delle Piante, Rome (Italy)

    1995-12-01

    This review is intended to give an overview on the technical, economical, agronomical, pedological and hygienic aspects of sludges from treatment plants of civil wastewater, Both Italian and European regulations on the sludge disposal are considered.

  17. RPROJECT5- Technical design and intermediate safety assessment report for the Bulgarian National Disposal Facility; RPROJECT5-Diseno Tecnico y Informe Intermedio de Seguridad para la Instalacion Nacional de Almacenamiento de Bulgaria

    Energy Technology Data Exchange (ETDEWEB)

    Stefanova, I.; Gonzalez, E.; Biurrun, E.; Navarro, M.

    2013-07-01

    In October 2011 SERAW, the national company for the management of radioactive waste from Bulgaria, assigned to the consortium consisting of Westinghouse Electric Spain S.A.U., the German company DBE TECHNOLOGY GmbH and the company national radioactive waste ENRESA the realization of design management Conceptual, technical design and the intermediate report of safety assessment for installation of storage for radioactive waste from low to medium activity in Bulgaria.

  18. Technical and economical feasibility study for energy re-qualification of school buildings in Bertesina `M. Montessori`, Vicenza (Italy); Studio di fattibilita` tecnico ed economico per la riqualificazione energetica del centro scolastico di Bertesina `M. Montessori` (Vicenza)

    Energy Technology Data Exchange (ETDEWEB)

    Michelini, M.; Minischetti, M.; Parutto, R.; Porfiri, M.T. [ENEA, Casaccia (Italy). Area Energetica; Trevisan, F. [Azienda Municipalizzata Case Popolari e Servizi, Vicenza (Italy)

    1993-04-01

    Educational buildings have been object of several activities by ENEA (Italian National Agency for New Technology, Energy and Environment), referring to the possibilities of energy saving in accordance with the comfort and the hygiene regulations provided by the law (see Acta of the seminar: `Interventi di miglioramento energetico nelle scuole`, Roma, 26-27 ottobre 1989). The present work is the first concrete experience of collaboration with a municipal enterprise (AMCPS) which manages the school buildings of the Municipality of Vicenza. In particular, we have analyzed the interventions on the building envelope (substitution of windows and doors, insulations by modern technics, elimination of old dampers for ventilation, installation of heat regenerator from exhausted air, improvements on lighting sources, etc. ) and on the heating plant and hot water production (substitution of old boilers with high efficiency boilers, reduction of thermal losses from piping, etc. ). These actions have been defined on the basis of an extensive acquisition data about the comfort within some schools whose heating plant is managed by AMCPS.

  19. A formação dos formadores : pressupostos e reflexões sobre a formação de professores para o ensino tecnico a partir de uma perspectiva de pedagogia em ato

    OpenAIRE

    Helena Gemignani Peterossi

    1992-01-01

    Resumo: Este estudo propõe-se a investigar a formação de professores para o ensino técnico dentro de urna problemática teórica particular a função do ensino técnico numa sociedade industrial. Nessa perspectiva o trabalho foi organizado em três momentos. No primeiro apresento as informações relativas ao contexto histórico que marcou a trajetória do ensino técnico, no Brasil, e a reconstrução a trajetória histórica da formação de seus professores e questiono as instituições que tiveram a seu ...

  20. The definition of the western boundary of the Guarani Aquifer System (Gran Chaco, Argentina): technical or conventional; Definicion del limite occidental del Sistema Acuifero Guarani (Gran Chaco, Argentina): tecnico o convencional

    Energy Technology Data Exchange (ETDEWEB)

    Rodello, E. A.; Veroslavsky, G.

    2012-11-01

    Unlike the eastern, northern and southern borders of the Guarani aquifer system (GAS), which extends beneath considerable regions of Argentina, Brazil, Paraguay and Uruguay, the western boundary, within the Gran Chaco, has no clear hydrogeologic definition that can be recognized at either the surface or subsurface. For this reason, the precise location of the aquifer in this area is open to many different possibilities, depending upon the factors or interests involved. Thus technical specialists have proposed locations that include or exclude, according to their own criteria, large sections of the Argentine Gran Chaco, the management and use of which, from an administrative point of view, imply diverse economic consequences. The Lomadas de Otumpa, located near the border between the Santiago del Estero and Chaco provinces, are gently sloping hills, rising to a height of no more than 110 m above the wide expanse of surrounding plains comprising the Gran Chaco. They trend NNE and are 200 km long and from 20 to 80 km in width, reflecting the presence of the regional Otumpa alignment. The Lomadas de Otumpa are clearly defined at the surface and thus they allow a geographical boundary to be imposed on the GAS sequences according to: i) their notable structural features at the surface, and ii) the close matching of the thinning and/or absence of the associated sedimentary record underground. Because the definition of the limits of the GAS has an influence on its evaluation, management, use and conservation, both at a technical and administrative level, it is of great importance to ascertain its hydrogeologic boundaries. (Author)

  1. Technical aspects of the process of segmentation and packaging of the reactor vessel of Jose Cabrera NPP; Aspectos tecnicos del proceso de segmentacion y embalaje de la vasija del reactor de la central nuclear Jose Cabrera

    Energy Technology Data Exchange (ETDEWEB)

    Valdivieso, J. M.; Garcia Castro, R.

    2015-07-01

    Westinghouse is carrying out the segmentation of the reactor pressure vessel (RPV) within the framework of the Dismantling and Decommissioning Project of the Jose Cabrera NPP. The final concept is based on the comprehensive Westinghouse experience in the field of LWR pressure vessel and internals segmentation, and particularly in previous reactor internals segmentation project for Jose Cabrera NPP. This article shows the development of all the activities included: cutting method selection, preparatory works, cutting activities, waste characterization and packaging activities. (Author)

  2. Used data bases to adapt the technical code of the construction (CTE) to the real climatology of Galicia; Bases de datos utilizadas para adaptar el codigo tecnico de la edificacion (CTE) a la climatologia real de Galicia

    Energy Technology Data Exchange (ETDEWEB)

    Vazquez, M.; Izquierdo, P.; Pose, M.; Prado, M. T.; Santos, J.

    2008-07-01

    The paper explains the data base used in the research on the variables solar radiation, air ambient temperature, air ambient relative humidity, and rivers surface water temperature, that was realized to analyze and adapt the Spanish Technical Building Code (TBC) to the real climate of Galicia. the Data bases are those of the meteorological and ambient stations of organizations with wide nets in Galicia, and images of the Meteosat-6 satellite. (Author)

  3. Comments on Resolution ANP 43/2007 and technical regulation of the system operational safety management - SGSO; Comentarios a Resolucao ANP 43/2007 e ao regulamento tecnico do sistema de gerenciamento da seguranca operacional - SGSO

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Flavio Augusto Pimentel de [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

    2012-07-01

    Some of the provisions of ANP Board Resolution n. 43, in December, 6th, 2007 (R-ANP 43/2007) have to receive special attention by economic agents, in consideration of the excessive extent and fuzziness and also the absence of objective criteria to assess their fulfillment by the Concessionaire. This paper will comment the responsibility of the Concessionaire (as show in article 1st , 2nd paragraph, of R-ANP 43/2007); the ANP authority (as show in article 1st , 3rd paragraph, of R-ANP 43/2007); the delivery of Operational Security Documentation and the imposition of penalties for violations of the SGSO. In conclusion, this paper will indicated some aspects which, from a legal point of view, need to be improved to provide greater legal certainty for economic agents. (author)

  4. Structural steels for fixed offshore platforms: technical challenges at the Brazilian national supply chain; Acos estruturais para plataformas fixas offshore: desafios tecnicos junto a cadeia de suprimentos nacional brasileira

    Energy Technology Data Exchange (ETDEWEB)

    Castro, Fabio Modesti Orsini de [Promon Engenharia Ltda., Rio de Janeiro, RJ (Brazil)

    2012-07-01

    This paper presents the main technical requirements for structural steel applied to the construction of bottom fixed offshore platforms, based on the most widely adopted and recognized actual standards. The mechanical properties and lab tests necessary to fulfill the Risk Management and E and P companies requirements are presented aiming to build the theoretical bases necessary for the engineering design of projects of this kind. The main types of steel available in the national market are presented at the end, giving an overall look at the Brazilian steel supply chain. (author)

  5. Advances and results of the educative project: Implementation of the career of 'Technician in Radiological protection'; Avances y resultados del proyecto educativo: Implementacion de la carrera de 'Tecnico en Proteccion radiologica'

    Energy Technology Data Exchange (ETDEWEB)

    Vizuet G, J.; Suarez, G.; Sanchez C, M. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2003-07-01

    In this work the obtained advances and achievements during the impartment of the technician career in radiological protection are presented. This is carried out in the 'Justo Sierra' Technological High School Center of San Mateo Atenco, Estado de Mexico, and has for objective the formation of professional-technicians. (Author)

  6. Arsenic present in the 'Region Lagunera' and its technical solution; Presencia de arsenico en la Comarca Lagunera y su solucion desde el punto de vista tecnico

    Energy Technology Data Exchange (ETDEWEB)

    Alvarez Silva, Mayeli; Uribe Salas, Alejandro [Centro de Investigacion y de Estudios Avanzados (CINVESTAV) (Mexico)

    2006-10-15

    Here is presented the development of a technology to remedy a case of chronic hydro-arsenicism (water contamination with arsenic) in the 'Region Lagunera' of Mexico. In the northern-central region of the Mexican Republic have been detected aquifers with an arsenic concentration exceeding in tenths of times the limits established by the regulations, this as a result of geothermal activity, use of pesticides, the mining industry and the water's sedimentary origin, therefore a technology applicable to domestic level has been developed which includes the arsenic adsorption on the surface of ferric oxide and the particle elimination by means of a filtration stage. Facing the election of a method of simple and low cost removal, the reverse osmosis, the electro-coagulation and the adsorption on metallic oxides are analyzed, taking into consideration the most important options for treatment, advantages and limitations. [Spanish] Desarrollo de una tecnologia de remediacion para un caso de hidroarsenicismo cronico en la Comarca Lagunera de Mexico. En la region norcentral de la republica mexicana se han detectado acuiferos con una concentracion de arsenico que excede decenas de veces los limites establecidos por las regulaciones, esto a consecuencia de actividad termal, uso de pesticidas, industria minera y origenes sedimentarios del agua, por ende se ha desarrollado una tecnologia aplicable a nivel domiciliario que incluye la adsorcion del arsenico en la superficie del oxido ferrico y la eliminacion de particulas mediante una etapa de filtracion. Frente a la eleccion de un metodo de remocion simple y de bajo costo se analizan la osmosis inversa, la electrocoagulacion y la adsorcion en oxidos metalicos tomando en cuenta las opciones mas importantes de tratamiento, ventajas y limitaciones.

  7. Technical requirements for implementation of an individual monitoring service for evaluation of operational quantity HP(10) using thermoluminescent dosimetry; Requisitos tecnicos para a implantacao de um servico de monitoracao individual externa de corpo inteiro para fotons utilizando dosimetria termoluminescente

    Energy Technology Data Exchange (ETDEWEB)

    Francisco, Adelaide Benedita Armando

    2016-11-01

    This work aims to establish technical requirements for the development of a TLDs system for the assessment of operational quantity H{sub P}(10), in order to implement an external individual monitoring service in countries who do not have. This allows a better understanding of the technic and the thermoluminescent dosimetry system, thus contributing to identify the technical criteria to be followed by a dosimetry laboratory and evaluation of the dosimetric system performance. For this, the review of the specific literature of the dosimetry field was conducted and later the type and performance tests that must be followed by a dosimetric system were reproduced in practice. In additional was made a analysis of internationals standards norms and the technical regulation used in Brazil, to define the essentials type testes to a dosimetric system. To check the performance of a dosimetry system, a performance analysis of the Brazilian TLDs system was carried out over the past 6 years using the trumpet curve, where it was observed that most of TLDs system, in this review period, were approved and have excellent performance. The technical requirements for the development of a thermoluminescent dosimetry system ensure that the system provides technically reliable results and allow demonstration of compliance with the standard criteria established by national and international standards, and the implementation of the dosimetry system, is verified the compliance of the annual doses limits set for occupationally exposed. (author)

  8. Technical and economical aspects of the fuel alcohol production in micro distilleries at Rio Grande do Sul, Brazil; Aspectos tecnicos e economicos da producao de alcool combustivel em microdestilarias no Rio Grande do Sul

    Energy Technology Data Exchange (ETDEWEB)

    Mayer, Flavio Dias; Bisognin, Dilson Antonio; Hoffmann, Ronaldo; Jahn, Sergio Luis [Universidade Federal de Santa Maria (UFSM), RS (Brazil)

    2010-07-01

    The increasing of ethanol production at Rio Grande do Sul, Brazil, will occur in small scale, through the microdistilleries installed at the present sugar cane producer regions, characterized by the small properties and familiar manpower. However, that production scale is lack of technical and cost analysis for allowing a better evaluation of the existent scenery at the State or Rio Grande do Sul, Brazil. From the production data of four microdistilleries installed at the Rio Grande do Sul, it is possible to affirm that the income obtained for the substract extraction and fermentation are reasonable (average 70.4 and 82.8, respectively). The distillation, however, posses a low yield (average 65.9%), resulting in a negative impact in the industrial productivity, on the energetic factor and the production cost. The increasing of yield of distillation for a satisfactory value (92.0 %) would result in a increasing of industrial productivity up to 61 % (Case B). So, it is necessary a more technical attention to that step for guarantee the development of the ethanol production activity in a small scale.

  9. VIII Asamblea Nacional Plenaria del Consejo Nacional Tecnico de la Educacion, Mexico, 29 julio-2 agosto 1969 (Informe Final) (Eighth National Plenary Assembly of the National Technical Council for Education, Mexico, July 29-August 2, 1969. Final Report).

    Science.gov (United States)

    Consejo Nacional Tecnico de la Educacion (Mexico).

    This document is an English-language abstract (approximately 1500 words) summarizing the work of the Plenary Assembly and its four work sessions: doctrine and legislation, educational system and national development, educational planning, and interrelations between home, school and community. Decentralization was the major theme of the first…

  10. Technical study of the CO{sub 2} capture process with monoethanolamine for a thermoelectric plant; Estudio tecnico del proceso de captura de CO{sub 2} con monoetanolamina para una planta termoelectrica

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez Diaz, Abigail; Franco Nava, Jose Manuel; Peralta Martinez, Maria Vita; Gonzalez Santalo, Jose Miguel [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Franco Lopez, Rogelio; Carreon Silva, Ramon [Comision Federal de Electricidad (Mexico)

    2010-07-01

    Within the frame of the Special Program of Climatic Change (PECC) emitted by the Federal Government, the study of the process of CO{sub 2} capture is carried out post-combustion for application in generating power stations, as a possible alternative to reduce the CO{sub 2} emissions in Mexico. The simulation of the process of CO{sub 2} capture of gases generated by a thermoelectric power plant of 350 MW was carried out, that would use coal as fuel, in the processes simulator ASPEN HYSYS. For this process two columns are required: one of absorption, in which the gases and the solvent enter, that in this case were a solution of monoethanolamine (MEA) at 30%. MEA reacts with the CO{sub 2} contained in gases, retaining it, so that the remaining gases that are emitted to the atmosphere contain no longer MEA and the captured CO{sub 2} passes to the second column where these two components are separated, using thermal energy to regenerate the MEA releasing the CO{sub 2}. The released CO{sub 2} leaves though the upper part of the column and the MEA recovered that is reused in the absorption column, through the bottom. The CO{sub 2} concentration in gases of the combustion is of 14.54% by volume. The simulation was realized defining a capture efficiency of 90%, which threw a thermal power consumption to regenerate MEA of 4.75 GJt/ton CO{sub 2} that would be provided by the thermoelectric power station. Considering a capacity of 280 ton/h (by train) of the gas to be treated the height of the desertion and absorption columns was determined, as well as the MEA solution flow. [Spanish] Dentro del marco del Programa Especial de Cambio Climatico (PECC) emitido por el Gobierno Federal, se lleva a cabo el estudio del proceso de captura de CO{sub 2} poscombustion para aplicacion en centrales generadoras, como una posible alternativa para reducir las emisiones de CO{sub 2} en Mexico. Se llevo a cabo la simulacion del proceso de captura de CO{sub 2} de los gases generados por una planta termoelectrica de 350 MW, que utilizaria carbon como combustible, en el simulador de procesos ASPEN HYSYS. Para este proceso se requieren dos columnas: una de absorcion, en la cual entran los gases y el solvente, que en este caso fue una solucion de monoetanolamina (MEA) al 30%. La MEA reacciona con el CO{sub 2} contenido en los gases, reteniendolo, de manera que los gases restantes que son emitidos al ambiente, ya no lo contienen. La MEA y el CO{sub 2} capturado pasan a la segunda columna donde estos dos componentes se separan, utilizando energia termica para regenerar la MEA liberando el CO{sub 2}. El CO{sub 2} liberado sale por la parte superior de la columna y la MEA recuperada, que es reutilizada en la columna de absorcion, por el fondo. La concentracion de CO{sub 2} en los gases de la combustion es de 14.54% volumen. La simulacion se realizo definiendo una eficiencia de captura de 90%, lo que arrojo un consumo de energia termica para regenerar la MEA de 4.75 GJt/ton CO{sub 2}, que seria suministrada por la central termoelectrica. Considerando una capacidad de gases a tratar de 280 ton/h (por tren) se determino la altura de las columnas de absorcion y desercion, asi como el flujo de solucion de MEA.

  11. Technical papers presented at the 4. symposium of specialists in electric operational and expansion planning. v. 2; Artigos tecnicos apresentados no 4. simposio de especialistas em planejamento da operacao e expansao eletrica. v. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-31

    This symposium about electric operational and expansion planning presents several articles that approaches issues such as, monitoring the power system stability, electrical load modelling, reliability in power systems, optimization in power systems, integrated resources planning in power systems, reactive control through static compensators, power flow analysis, system modelling, etc

  12. Main technical aspects and clinical benefits of respiratory Gating for radiotherapy of lung neoplasm; Principais aspectos tecnicos e beneficios clinicos do Gating respitatorio para radioterapia do cancer de pulmao

    Energy Technology Data Exchange (ETDEWEB)

    Benites, Rafaela Freitas Oliveira, E-mail: rafaelafreitasfisica@gmail.com [Fundacao do Cancer, Rio de Janeiro, RJ (Brazil)

    2016-07-01

    The concern with the irradiation of lung tumors is that many of them can move along the breathing, which can cause problems in defining accurately the target and increases the irradiation of normal tissues. The objectives are to present the 4D CT principles, image acquisition, reconstruction and application in planning of the radiotherapy. It justifies the quick implantation, improvements in acquisition and images, the possibility in quantify the tumor movement, verifying strategies and delivery treatment. It's concluded that the toxicity risk is reduced with the respiratory gating, and the results suggests that the closed RT will be of clinical relevance. (author)

  13. Technical factors in the site selection for a radioactive wastes storage of low and intermediate level;Factores tecnicos en la seleccion del sitio para un almacen de desechos radioactivos de bajo y medio nivel

    Energy Technology Data Exchange (ETDEWEB)

    Badillo A, V. E.; Ramirez S, J. R.; Palacios H, J. C., E-mail: veronica.badillo@inin.gob.m [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2009-10-15

    The storage on surface or near surface it is viable for wastes of low and intermediate level which contain radio nuclides of short half life that would decay at insignificant levels of radioactivity in some decades and also radio nuclides of long half life but in very low concentrations. The sites selection, for the construction of radioactive waste storages, that present an appropriate stability at long term, a foreseeable behavior to future and a capacity to fulfill other operational requirements, is one of the great tasks that confront the waste disposal agencies. In the selection of potential sites for the construction of a radioactive wastes storage of low and intermediate level, several basic judgments should be satisfied that concern to physiography, climatology, geologic, geo-hydrology, tectonic and seismic aspects; as well as factors like the population density, socioeconomic develops and existent infrastructure. the necessary technician-scientific investigations for the selection of a site for the construction of radioactive waste storages are presented in this work and they are compared with the pre-selection factors realized in specify areas in previous studies in different regions of the Mexican Republic. (Author)

  14. Technical papers presented at the 4. symposium of specialists in electric operational and expansion planning. v. 1; Artigos tecnicos apresentados no 4. simposio de especialistas em planejamento da operacao e expansao eletrica. v. 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-31

    This document collects papers presented in the 4. Symposium of specialists in electric operation and expansion planning. The main problems affecting this sector in the world are discussed. Several cases studies are presented as well as state of the art and new developing technologies

  15. Experimental hematology: theoretical and practical course, Madrid 31th may to 4th june 1993. Hematologia experimental: curso tecnico practico, Madrid, 31 de mayo a 4 de junio 1993

    Energy Technology Data Exchange (ETDEWEB)

    Bueren, J.A.; Tejero Ortega, C. (eds.)

    1993-01-01

    This book contains the lectures of hematology course held in Madrid. The main scope of conferences are: 1.- Hematopoiesis: regulation, growing ionizing radiations, damage and radiation effects. 2.- Radioprotection: stem cells of mouse 3.- Genetic: hematopoietic pathology 4.- Stem cells

  16. Tools for the analysis of technical and economical impacts due to budgetary restrictions in investments plans of high voltage systems; Ferramenta para analise dos impactos tecnicos e economicos por restricoes orcamentarias em planos de investimentos de sistemas de alta tensao

    Energy Technology Data Exchange (ETDEWEB)

    Fernandes, Josinaldo; Freire, Kleber [Universidade de Salvador (UNIFACS), BA (Brazil)]. E-mails: josinaldo@luar.nlink.com.br; kfreire@unifacs.br; Antunes, Alden; Kagan, Henrique; Guaraldo, Joao [Daimon Interplan, Sao Paulo, SP (Brazil)]. E-mails: alden@daimoninterplan.com.br; henkagan@uol.com.br; guaraldo@daimoninterplan.com.br; Kagan, Nelson [Universidade de Sao Paulo (USP), SP (Brazil). Escola Politecnica]. E-mail: nelsonk@pea.usp.br; Silveira, Cristiano [Universidade de Sao Paulo (USP), SP (Brazil). Escola Politecnica. Centro de Estudos em Regulacao e Qualidade de Energia (ENERQ)]. E-mail: cristiano@pea.usp.br

    2006-07-01

    This article deals with a computational module conceived to make possible the treatment of the problem of cut of workman ships in the segment of high-voltage distribution, motivated for budgetary restrictions. For this computational module it is possible, from a set of workmanship candidates, to effect the evaluation of the respective operational performance of the current system of the insertion of workmanship (considering adequate models of power flow and high-voltage trustworthiness of nets), respective economic valuation and posterior prioritization (for in such a way, using based appropriate techniques of optimization in genetic algorithms), respecting it considered budgetary availability. In this context, the developed computational module aims at to guide the planner in the task to discard workmanship, searching to minimize the corresponding technician-economic impact. (author)

  17. Alternative methodology for the margin determination of voltage stability in electrical power systems. Economical and technical impacts; Metodologia alternativa para a determinacao da margem de estabilidade de tensao em sistemas eletricos de potencia - impactos tecnicos e economicos

    Energy Technology Data Exchange (ETDEWEB)

    Cortez, Anderson Neves [Companhia Energetica de Minas Gerais (CEMIG), Belo Horizonte, MG (Brazil)]. E-mail: anderson@cemig.com.br

    2001-07-01

    This article presents an alternative methodology of voltage stability determination of Electrical Power System (EPS), focusing technical and economical aspects. In this direction, it presents relative aspects to mathematical modelling to analyse the phenomenon and also the influence from the most important dynamics to be taken into consideration. It is inquired the participation of generators in the rearrangement of the adopted active power in the current criteria of margin determination. A real system is analyzed, under this aspect, indicating significant variations in the calculated values for the margins, resulting in improper investments of significant values. The proposed methodology by this article seeks to contribute to minimize such mistakes, this is done by means of focusing the long duration dynamics of generators, what constitutes an important progress in relation to the researches about them.

  18. Technical, economic and regulatory aspects for the insertion of renewable sources in the Brazilian energy market; Aspectos tecnicos, economicos e regulatorios para a insercao de fontes renovaveis no mercado eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Rafael Malheiro [Universidade Federal do Rio de Janeiro (PEO/COPPE/UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-Graduacao de Engenharia. Programa de Engenharia Oceanica], E-mail: rafael@lts.coppe.ufrj.br; Nogueira, Larissa Goncalves [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Curso de Pos-Graduacao em Planejamento de Sistemas Energeticos], E-mail: larissa@fem.unicamp.br

    2010-07-01

    This paper discusses technical, economical, political and regulatory aspects which have been favourable to the insertion of renewable sources in the Brazilian electric matrix, specifically those one referred to the season and intermittency interference on those final costs. Additionally, land markers will be indicated for the introduction of renewable source projects in a such way to become more attractive under the viewpoint of the investor due to adequacy of energy generation strategy.

  19. Una investigacion accion participativa en una comunidad rural de Mexico

    National Research Council Canada - National Science Library

    Arellano, Rubi; Suarez, Sergio; Balcazar, Fabricio E; Alvarado, Francisco

    2015-01-01

    .... Aunque las intervenciones comunitarias tienen la intencion de mejorar las desigualdades sociales y economicas, todavia hay una necesidad de evaluar los resultados de la Investigacion Accion Participativa (IAP...

  20. Defensa del territorio Nasa frente a un parque nacional

    National Research Council Canada - National Science Library

    Correa V., Diana

    2010-01-01

    .... Sin embargo, estas areas protegidas tienen razones juridicas, economicas y sociales, que dificultan el desarrollo de acuerdos para la proteccion y conservacion de la diversidad biologica y cultural...

  1. Transformaciones en la mirada empresarial respecto del papel de los trabajadores en empresas autopartistas de Cordoba, Argentina

    National Research Council Canada - National Science Library

    Milesi, Andrea; Motta, Jorge

    2014-01-01

    ...), e integrando aportes de las teorias antropologica y economica, en este articulo se analiza como se han ido transformando en las ultimas dos decadas las representaciones empresariales respecto...

  2. Importance of the planning activities, cutting, handling and analysis of the nuclei of oil well drilling; Importancia de las actividades de planificacion, corte, manejo y analisis de los nucleos de perforacion de pozos petroleros

    Energy Technology Data Exchange (ETDEWEB)

    Contreras L, Enrique A; Garcia M, Pablo [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2007-07-01

    , recipientes de almacenamiento de hidrocarburos, agua y energia calorifica, asi como barreras impermeables y medios de transporte de la energia y de los fluidos. Entre las propiedades mas importantes que se utilizan para describir estas funciones se encuentran la porosidad, la permeabilidad, la compresibilidad del volumen de poros, el factor de resistividad de la formacion, el exponente de saturacion, la velocidad de las ondas acusticas P y S, las permeabilidades relativas, las presiones capilares, las constantes elasticas y otras propiedades mecanicas, el coeficiente de dilatacion termica, la conductividad termica, la difusividad termica y el calor especifico. La ejecucion de una amplia variedad de actividades relacionadas con las etapas de exploracion, localizacion, evaluacion y desarrollo de los yacimientos petroleros, depende fuertemente de que se tenga un buen conocimiento de la magnitud y de la variabilidad espacial de estas propiedades. Tanto la factibilidad tecnica como la economica de desarrollar un prospecto de yacimiento petrolero, dependen de que las rocas que intervienen exhiban una combinacion adecuada de sus propiedades, para asi constituir una estructura geologica confinante y almacenadora de hidrocarburos, que sea factible de desarrollarse tecnicamente, a la vez que tenga el potencial de redituar un beneficio economico. En este contexto, desde la plataforma de experiencia que se tiene sobre el tema en el Laboratorio de Yacimientos del Instituto de Investigaciones Electricas. En el presente articulo se aborda la relevancia que tienen las actividades de corte, manejo y analisis de laboratorio de los nucleos de perforacion de pozos petroleros, para la evaluacion de las formaciones geologicas, en relacion con la caracterizacion, la evaluacion y el aprovechamiento de los yacimientos petroleros.

  3. Aplicacion de celda fotoacustica diferencial en la determinacion de la permeabilidad de agua en hueso descalcificado

    National Research Council Canada - National Science Library

    Cortes-Ibarra, Maria de Lourdes; Urriolagoitia-Calderon, Guillermo M; Hernandez-Gomez, Luis Hector; Mendoza-Lopez, Maria Luisa; Rodriguez-Garcia, Mario Enrique; Urriolagoitia Sosa, Guillermo

    2008-01-01

    .... En este trabajo fue posible determinar la viabilidad de la CFD para la evaluacion de densidad osea indirectamente, siendo posible efectuar la evaluacion in situ de permeacion de agua, asi como...

  4. Factores asociados prospectivamente a sintomatologia depresiva en adolescents tempranos de sexo femenino

    National Research Council Canada - National Science Library

    Cova, Felix; Rincon, Paulina; Melipillan, Roberto; Inostroza, Carolina

    2012-01-01

    .... Las evaluaciones de seguimiento fueron a 6, 13 y 24 meses de la primera evaluacion. Controlada la depresion inicial, se observo relacion entre soporte familiar y estilo inferencial depresogenico con sintomatologia depresiva...

  5. Vision general de las practicas de capacitacion en Peru

    National Research Council Canada - National Science Library

    Hernandez Pozas, Olivia; Lourdes Jauregui, Kety

    2012-01-01

    .... Este articulo tambien ayuda a establecer prioridades de investigacion futura. La Teoria de Capital Humano y contribuciones de evaluacion de necesidades, planeacion, implantacion y evaluacion de la capacitacion sirvieron como marco teorico...

  6. Tidal power plant energy estimation; Cuantificacion de energia de una planta mareomotriz

    Energy Technology Data Exchange (ETDEWEB)

    Lopez Gonzalez, J.; Hiriart Le Bert, G.; Silva Casarin, R. [Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico (mexico)]. E-mail: JlopezGo@iingen.unam.mx; gerardo367@yahoo.com.mx; RSilvaC@iingen.unam.mx

    2010-04-15

    In this paper a methodology is presented which allows a quick and simple means of estimating the potential energy that can be obtained from a tidal power plant. The evaluation is made using a normalised nomograph, which is a function of the area of the tidal basin against the electricity installed capacity to thus obtain the potential energy for any location. The results describe two means of operation, one of flow tide and the other flow-ebb tides, with two tidal basin systems operating: single and double reservoir systems. To obtain the normalised nomograph the numerical results for simulations of several tidal power plants under differing operational conditions over a period of one year. These conditions were established by varying the electricity installed capacity, the hydraulic conditions in flow tide, ebb tides or both and with single or double reservoir systems and using sea level information taken every 15 minutes. To validate the model information from the tidal power plant at Rance, France, was used, which includes data concerning production, electricity installed capacity, turbine characteristics and tidal ranges. A very good correlation was found between the results of the numerical model and those reported in various technical reports. [Spanish] Se presenta una metodologia que permite estimar de manera rapida y sencilla el potencial de energia que puede ser extraido a traves de una planta mareomotriz. La evaluacion se realiza utilizando un nomograma normalizado que es funcion del area del embalse versus la capacidad electrica instalada, para asi obtener el potencial energetico en una zona en particular. Los resultados contemplan dos formas de operacion, una llamada en flujo y otra en flujo-reflujo, dos esquemas de embalse (sencillo y doble embalse). Para la elaboracion del nomograma normalizado se utilizaron resultados numericos de la simulacion de multiples plantas mareomotrices bajo diferentes escenarios durante un ano de operacion. Los escenarios

  7. Mujer wayyuu: desafios y transformaciones en la economia contemporanea de la frontera colombo- venezolana

    Directory of Open Access Journals (Sweden)

    Anny Catalina Gutierrez Cruz

    2014-02-01

    Full Text Available En el presente articulo se examinara como la economia tradicional del pueblo indigena wayuu ha tenido transformaciones economicas y poloticas a partir de la vinculacion de la mujer en la comercilizacion y transporte de gasolina y de la institucionalizacion de relaciones economicas de mercado entre el pueblo indigena wayuu y los estados de Colombia y Venezuela.

  8. CONSIDERATII TEORETICE ASUPRA MODELULUI CENTRU-PERIFERIE DE TIP KRUGMAN

    Directory of Open Access Journals (Sweden)

    Viorica Puscaciu

    2006-05-01

    Full Text Available Lucrarea prezinta modelul standard centru-periferie fundamenat de Paul Krugman-1991.Modelul bazat pe concurenta monopolistica de tip Dixit-Stiglitz ,fundamenteaza aglomerarea economica si este considerat fundamental “noii economii geografice “domeniu foarte fecund in cercetarea economica actuala .In vederea prezentarii am realizat simulari numerice cu ajutorul produsului Maple ;punem la dispozitia celor interesati intreaga documentare.

  9. Nacionalizar el salitre: debates iniciales sobre el control fiscal de la industria

    National Research Council Canada - National Science Library

    Donoso Rojas, Carlos

    2014-01-01

    ... como contradictorios en sus resultados. La transformacion de la estructura economica del Estado, a partir del control de los sectores productivos claves, lo convierte en un medio de cambio efectivo de las condiciones economicas y sociales, posibilitando una redistribucion mas equitativa de la renta. Paralelamente, es tambien un medio de reafirmacio...

  10. Development and experiences of photovoltaic water pumping for a drip irrigation in agriculture; Desarrollo y experiencias de sistemas de bombeo fotovoltaico para aplicaciones de riego tecnificado en la agricultura

    Energy Technology Data Exchange (ETDEWEB)

    Schmidt, Reinhold; Sapiain, Raul; Torres, Ariel; Loose, Dirk [Centro de Energias Renovables, Arica (Chile); Hahn, Andreas [Eschborn (Germany)

    2000-07-01

    de la Universidad de Tarapaca trabaja en conjunto con la Agencia de Cooperacion Tecnica del Gobierno Aleman (GTZ) y agricultores de la region. Las actividades contemplan la planificacion, el diseno, la implementacion y evaluacion de cuatro estaciones agricolas de pequena y mediana envergadura en diferentes zonas deserticas en el norte de Chile. En una primera etapa se implementaron sistemas de bombeo fotovoltaico y riego utilizando estanques de acumulacion en altura, desde donde se distribuye el agua a un sistema de riego tecnificado por gravedad a una muy baja presion. En una segunda etapa se ha desarrollado e implementado una nueva configuracion del sistema de bombeo fotovoltaico, que corresponde a un sistema de riego directo, sin estanque de acumulacion, con un caudal y presion de riego variable. Este programa incorpora un sistema de monitoreo, que permite realizar una evaluacion del comportamiento del sistema a corto y largo plazo bajo aspectos tecnicos, economicos y agricolas. Los datos medidos y experiencias obtenidas a la fecha muestran interesantes resultados, bajo distintos aspectos, como por ejemplo la alta confiabilidad tecnica del bombeo fotovoltaico, la adecuada distribucion y uniformidad de riego operando a muy baja presion, la adaptacion del caudal y presion variable de la bomba fotovoltaica al sistema de riego directo y el simple manejo de los sistemas fotovoltaicos comparados con sistemas convencionales de bombeo. Las experiencias ganadas abren una nueva perspectiva en el campo de aplicaciones de sistemas de bombeo fotovoltaico para el sector productivo agricola en zonas aridas.

  11. Las patentes como fuente de informacion para la innovacion en entornos competitivos

    National Research Council Canada - National Science Library

    Diessler, Gabriela

    2010-01-01

    .... Se describen las ventajas y limitaciones de su uso en tanto fuente de informacion. Se identifican y clasifican las posibles aplicaciones en los ambitos tecnico, cientifico, comercial y juridico...

  12. Operability probabilistic analysis: methodology for economic improvement through the parallelization of process plants; Analisis probabilistico de operatividad: metodologia para mejora economica a traves de la paralelizacion de plantas de proceso

    Energy Technology Data Exchange (ETDEWEB)

    Mendoza, A.; Francois, J. L.; Martin del Campo, C.; Nelson, P. F., E-mail: iqalexmdz@yahoo.com.mx [UNAM, Facultad de Ingenieria, Departamento de Sistemas Energeticos, Paseo Cuauhnahuac No. 8532, Col. Progreso, 62550 Jiutepec, Morelos (Mexico)

    2012-10-15

    One of the major challenges of the emergent technologies to overcome is the economic competitive with regard to the established technologies ar the present time, since these should not only take advantage efficiently of the energy resources and the raw materials in their productive processes, but also to elevate to the maximum the use of the derived economic resources of the initial investment of the plant. In special cases, like in those related with the electric power generation or fuels, the fixed cost represents a high percentage of the total cost, where is observed a great dependence with the plant factor, parameter that in turn is susceptible to non prospective variations but yes predictable by means of the use of analytic tools, able to relate the failures rates of present elements in the plant with the probability of operation outside times, as the Operability Probabilistic Analysis. In this study were evaluated the implications of changes in the plant configurations, with the purpose of knowing the economic advantages of a major or minor equipment s division in parallel (parallelization); the function general objective is established to evaluate the parallelization alternatives and the basic concepts are presented to carry out this methodology. At the end a study case is developed for a hydrogen production plant in its section of sulfuric acid decomposition. (Author)

  13. Technical and economic proposal for the extension of the Laguna Verde Nuclear Power plant with an additional nuclear reactor; Propuesta tecnica y economica para la ampliacion de la Central Nucleoelectrica Laguna Verde con un reactor nuclear adicional

    Energy Technology Data Exchange (ETDEWEB)

    Leal C, C.D.; Francois L, J.L. [Facultad de Ingenieria, UNAM, Circuito Interior, C.U. Coyoacan, 04510 Mexico D.F. (Mexico)]. e-mail: carlosdanielleal@yahoo.com.mx

    2006-07-01

    The increment of the human activities in the industrial environments and of generation of electric power, through it burns it of fossil fuels, has brought as consequence an increase in the atmospheric concentrations of the calls greenhouse effect gases and, these in turn, serious repercussions about the environment and the quality of the alive beings life. The recent concern for the environment has provoked that industrialized countries and not industrialized carry out international agreements to mitigate the emission from these gases to the atmosphere. Our country, like part of the international community, not is exempt of this problem for what is necessary that programs begin guided toward the preservation of the environment. As for the electric power generation, it is indispensable to diversify the sources of primary energy; first, to knock down the dependence of the hydrocarbons and, second, to reduce the emission of polluting gases to the atmosphere. In this item, the nucleo electric energy not only has proven to be safe and competitive technical and economically, able to generate big quantities of electric power with a high plant factor and a considerable cost, but rather also, it is one of the energy sources that less pollutants it emits to the atmosphere. The main object of this work is to carry out a technical and economic proposal of the extension of the Laguna Verde Nuclear power plant (CNLV) with a new nuclear reactor of type A BWR (Advanced Boiling Water Reactor), evolutionary design of the BWR technology to which belong the two reactors installed at the moment in the plant, with the purpose of increasing the installed capacity of generation of the CNLV and of the Federal Commission of Electricity (CFE) with foundation in the sustainable development and guaranteeing the protection of the environment by means of the exploitation of a clean and sure technology that counts at the moment with around 12,000 year-reactor of operational experience in more of thirty countries. (Author)

  14. Modelagem multicriterial aplicada a problemas de regulacao em areas portuarias privatizadas

    National Research Council Canada - National Science Library

    Gartner, Ivan Ricardo; Rocha, Carlos Henrique; Granemann, Sergio Ronaldo

    2012-01-01

    ... grupos de interesses com objetivos conflitantes e requer solucoes de compromisso. A modelagem contou com a participacao de tecnicos e gerentes em regulacao da Agencia Nacional de Transportes Aquaviarios (ANTAQ...

  15. Energetic use of biogas from sanitary landfill in Brazil: a technical feasibility study, economic and environmental; Do aproveitamento energetico do biogas em aterros sanitarios no Brasil: um estudo de viabilidade tecnica, economica e ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Abreu, Fabio Viana de [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

    2012-07-01

    Power generation through biogas in landfills is a production of clean and renewable energy in order to minimize the global impacts generated by the burning of municipal solid waste. In this article, the operational conditions of biogas are defined, and analyzed the appropriate areas and minimum flow of biogas, in m{sup 3}/h, to enable this type of project. The most significant environmental contribution of this project is to reduce emissions of greenhouse gases (GHG), by converting the methane into carbon dioxide. According to the Clean Development Mechanism (CDM), called developed countries can buy carbon credits from developing countries to meet their environmental goals. This alternative of raising revenue is one of the objects of this study. Are studied energy conversion technologies, with analysis of the best alternative for the conversion of landfill biogas energy. Comparative studies are presented and the results showed that the generating sets, using internal combustion engines (Otto or Diesel cycles) are more viable both technically and economic bias for energy conversion of landfill gas in Brazil through thermoelectric units.

  16. «POR EL MUCHO CARIÑO QUE LE PROFESO...» GESTIONES ECONOMICAS Y RELACIONES AFECTIVAS DE MUJERES EN CONCEPCION A TRAVES DE SUS DECISIONES TESTAMENTARIAS (1840-1860

    Directory of Open Access Journals (Sweden)

    ALEJANDRA BRITO PEÑA

    2011-10-01

    Full Text Available Normal 0 21 false false false ES-CL X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} INTRODUCCIÓN LA GESTIÓN ECONÓMICA DE las mujeres ha sido invisibilizada en las reconstrucciones históricas, que han mirado el hacer económico desde una perspectiva más estructural. Aun aquellos estudios que miran la economía desde la perspectiva de la acumulación de sujetos particulares, tienden a mirar a las mujeres como sujetos pasivos, cuyo aporte está dado tan sólo a través de las herencias. El estudio que estamos realizando de las mujeres penquistas a través de sus decisiones testamentarias nos muestra una imagen de su quehacer en el transcurso de toda su vida, ya que la mayoría de ellas son mayores, a través del cual acumulan una gran cantidad de experiencias vitales que se ven reflejadas en sus testamentos. Algunas vieron morir a más de un esposo; vieron nacer y morir a varios de sus hijos/as; levantaron casas y las vieron caer como consecuencia de los terremotos o de las guerras, etc. A través de su «última voluntad», podemos mirar hacia el interior de sus vidas. Un aspecto de la vida de las mujeres que ha sido pasado por alto es su gestión económica, cuestión que queda claramente manifestada en los testamentos. De allí la importancia que, como fuente documental, le atribuimos a los testamentos, en tanto el objetivo central de los mismos es ordenar económicamente los bienes acumulados, a través del nombramiento de herederos y/o legatarios, debiendo necesariamente enumerar sus posesiones, a lo cual muchas agregan la procedencia de las mismas. INTRODUCCIÓNLA GESTIÓN ECONÓMICA DE las mujeres ha sido invisibilizada en las reconstruccioneshistóricas, que han mirado el hacer económico desde una perspectiva másestructural. Aun aquellos estudios que miran la economía desde la perspectiva dela acumulación de sujetos particulares, tienden a mirar a las mujeres como sujetospasivos, cuyo aporte está dado tan sólo a través de las herencias.El estudio que estamos realizando de las mujeres penquistas a través desus decisiones testamentarias nos muestra una imagen de su quehacer en el transcursode toda su vida, ya que la mayoría de ellas son mayores, a través del cualacumulan una gran cantidad de experiencias vitales que se ven reflejadas en sustestamentos. Algunas vieron morir a más de un esposo; vieron nacer y morir avarios de sus hijos/as; levantaron casas y las vieron caer como consecuencia delos terremotos o de las guerras, etc. A través de su «última voluntad», podemosmirar hacia el interior de sus vidas. Un aspecto de la vida de las mujeres que hasido pasado por alto es su gestión económica, cuestión que queda claramentemanifestada en los testamentos. De allí la importancia que, como fuente documental,le atribuimos a los testamentos, en tanto el objetivo central de los mismoses ordenar económicamente los bienes acumulados, a través del nombramientode herederos y/o legatarios, debiendo necesariamente enumerar sus posesiones,a lo cual muchas agregan la procedencia de las mismas.

  17. Economic and technical considerations on the use of vegetable oils as fuel substitute for diesel oil; Consideracoes economicas e tecnicas sobre o uso de oleos vegetais combustiveis como substituto de oleo diesel

    Energy Technology Data Exchange (ETDEWEB)

    Mourad, Anna Lucia [Universidade Estadual de Campinas (DE/FEM/UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Dept. de Energia], Email: anna@ital.sp.gov.br

    2006-07-01

    The introduction of bio diesel in the Brazilian energy matrix has been mainly motivated by the governmental actions, which foresees social and economical development to the country in a program that allows the use of different oil seed crops as raw materials for biofuels production. Cost estimates considering the average price received by the farmer and the oil content of each vegetable shows that the minimum cost of bio fuel was about 1,1(castor bean); 1,8(peanut); 2,0(soy beans); 3,3(corn) higher than the average cost of fossil diesel from 1975 to 2004. Among the evaluated raw materials, only the palm oil had inferior cost compared to the petroleum diesel (0.6%). The oleaginous plants that have a higher oil content and smaller agricultural production cost to produce bio fuels are economically most feasible and they should be prioritized in the government program so that it may become economically sustainable along the years, as well as generate adequate profit to the farmers of each culture. The feasibility of National Program for Biofuels Use and Production and both economical and environmental aspects should also consider the destination of the main by-products of the biofuel productive chain such as the left over cakes after extraction of the oil and glycerine produced during the transesterification process. (author)

  18. Evolution of the economic importance of the oil and gas industrial sector in Brazil: impacts on macroeconomic indicators; Evolucao da importancia economica da industria de petroleo e gas natural no Brasil: contribuicao a variaveis macroeconomicas

    Energy Technology Data Exchange (ETDEWEB)

    Canelas, Andre Luis de Souza

    2007-06-15

    This thesis analyzes the evolution of the macroeconomic importance of the oil and gas sector in Brazil, in the recent years, which is represented by its contribution to the macroeconomic indicators, which are: GDP, Investment, Foreign Direct Investment, Trade Balance, Tax Revenue, Jobs, Wages and Inflation. The results found indicate that the oil and gas sector has a relevant contribution to the values of the Brazilian GDP, total amount of investment, total amount of foreign direct investment, tax revenue, inflation and trade balance, whereas this sector has a less relevant impact for the creation of jobs and wages in Brazil. (author)

  19. Shapley value applied to the economic analysis of upstream projects for an integrated energy company; Valor de Sharpley aplicado a analise economica de projetos de E e P em uma empresa integrada de energia

    Energy Technology Data Exchange (ETDEWEB)

    Pinciara Junior, Ewerton Ribeiro Walter; Vieira, Roberta Chasse; Soares, Fabio Maia [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    For integrated energy companies, the determination of opportunity costs is of major importance for the appraisal of project revenues. The key feature to be taken into account is not the actual price forecast for the oil, but which value that oil production aggregates to the Company - the cumulative gains of both upstream and downstream segments. When a project portfolio is analyzed, special care must be taken to the synergies among projects, whether those are positive or negative. An inadequate approach could simply disregard such relationships or oversize their impact, what would lead to incorrect determination of project revenues. Shapley values is a concept withdrawn from games' theory which can be used as a normalization technique, aiming to distribute the income of a portfolio among its players in an unbiased way, through the analysis of the several marginal contributions of each project for each possible subset of the portfolio. In this contribution the utilization of such technique for the valuation of oil production projects is discussed and illustrated. Topics such as advantages and drawbacks of the proposed approach are addressed, as well as computational effort issues. (author)

  20. Economic analysis and performance of a low power diesel engine using soybean oil refined; Analise economica e de desempenho de um motor diesel de baixa potencia utilizando oleo de soja refinado

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Guilherme Ladeira dos; Fernandes, Haroldo Carlos; Alvarenga, Cleyton Batista de; Leite, Daniel Mariano; Siqueira, Wagner da Cunha [Universidade Federal de Vicosa (UFV), MG (Brazil). Dept. de Engenharia Agricola], E-mails: glsantos@yahoo.com.br, haroldo@ufv.br, cleyton.alvarenga@ufv.br, daniel.mariano@ufv.br, wagner.siqueira@ufv.br

    2011-07-01

    Oil is the main source of energy available to power internal combustion engines, enabling its transformation into mechanical energy. To meet the production of vegetable oils, many cultures can be used, according to regional conditions, especially those that are already commercially exploited, such as peanuts, Soybeans, Corn, Palm oil, Sunflower and Canola, and other public regional and castor oil, Andiroba, Pequi, Buriti, Inaja, Carnauba, Jatropha, among others. The objective of this work make an economic analysis of replacing diesel fuel by mixing and compare performance on the engine and using B{sub 2} biodiesel fuel mixture of diesel with 2 % Refined Soybean Oil (SAB). The loads applied by the dynamometer in the engine were 7, 9, 11, 13, 15, 17, 19 and 21.5 lbs. The engine was coupled to the dynamometer with the aid of pulleys and belts of the type V with gear ratio of 1:1,9. Apparently, the best vegetable oil mixture was 30 %, both in terms of specific consumption and cost from R$ kW{sup -1} h{sup -1}. Providing the same cost of pure diesel. (author)