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Sample records for natural entre cilindros

  1. Perturbative calculations of flow patterns in free convection between coaxial cylinders. Non-linear temperature dependences of the fluid properties; Un metodo de perturbaciones para la obtencion de perfiles de velocidad en conveccion natural entre cilindros coaxiales, dependencias de la temperatura no-lineales de las propiedades del fluido

    Energy Technology Data Exchange (ETDEWEB)

    Navarro, J A; Madariaga, J A; Santamaria, C M; Saviron, J M

    1980-07-01

    10 refs. Flow pattern calculations in natural convection between two vertical coaxial cylinders are reported. It is assumed trough the paper. that fluid properties, viscosity, thermal conductivity and density, depend no-linearly on temperature and that the aspects (height/radius) ratio of the cylinders is high. Velocity profiles are calculated trough a perturbative scheme and analytic results for the three first perturbation orders are presented. We outline also an iterative method to estimate the perturbations on the flow patterns which arise when a radial composition gradient is established by external forces in a two-component fluid. This procedure, based on semiempirical basis, is applied to gaseous convection. The influence of the molecules gas properties on tho flow is also discussed. (Author) 10 refs.

  2. Construcción y puesta en funcionamiento de una máquina de cilindros cruzados para la evaluación del desgaste adhesivo

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    Sandro Báez P.

    2004-01-01

    Full Text Available En esta investigación se evaluó el desgaste adhesivo de cuatro metales (fundición gris, latón 60- 40, bronce fosforado y un acero AISI 1020, en un tribómetro de cilindros cruzados, bajo la norma ASTM G- 83-96. Para lograr dicho objetivo, se diseñó, construyó y puso en marcha una máquina de cilindros cruzados, la cual contiene dos probetas cilíndricas (una estática y una giratoria, que fueron maquinadas y pulidas con lijas hasta obtener una superficie con una rugosidad máxima de 0.34 mm. Con el volumen de metal perdido por cada material, se calculó su velocidad promedio de corrosión y se determinó el coeficiente de desgaste. Además, se realizaron ensayos a cada material, para determinar los perfiles de desgaste respectivos (Gramos de metal perdido vs Tiempo. En este trabajo se obtuvo un coeficiente de variación máximo, entre los cuatro metales, de 4.3%, indicando una buena correlación de los resultados obtenidos. Los coeficientes de desgaste se consideraron aceptables, puesto que sus valores corresponden y son del mismo orden a los establecidos en la literatura. Igualmente, los perfiles del desgaste mostraron las tres etapas del proceso, similares a los encontrados en otros trabajos realizados.

  3. Factor de equivalencia en la sustitución de gasolina por gas natural comprimido para uso vehicular

    OpenAIRE

    Agudelo Santamaría, John Ramiro; Amell Arrieta, Andrés Adolfo

    2002-01-01

    En este artículo se presenta un balance completo de la energía en el vehículo cuando éste funciona en modo biocombustible, gasolina-gas natural, para determinar el factor de equivalencia energético entre ambos combustibles (m3 GNC/gal de gasolina). En el modelo se han incluido el motor, la transmisión y el efecto de sobrepeso de los cilindros. Los resultados muestran que el gas natural de la Guajira, no obstante ser el más puro de Colombia, tiene una relación 14,5% menos favorable que el gas ...

  4. Comportamento de cilindros de carbono/epóxi submetidos a cargas compressivas axiais Mechanical behavior of carbon/epoxy cylinders under axial compressive loads

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    Adriano Gonçalves

    2001-06-01

    Full Text Available Para estruturas utilizadas no setor aeroespacial, os requisitos de baixo peso, alta resistência e rigidez, além de estabilidade dimensional, têm propiciado o aumento da utilização de materiais compósitos nas suas manufaturas. Em particular, cascas cilíndricas ou estruturas construídas pela junção de cilindros de paredes finas, confeccionadas em fibra de carbono e resina epóxi, são amplamente utilizadas neste tipo de aplicação. Neste trabalho, um programa experimental foi desenvolvido para determinar as tensões de falha, os módulos de elasticidade e o modo de falha de 47 cilindros com diâmetro interno de 40 mm e espessura nominal de 0,6 mm (com exceção de 2 corpos de prova, fabricados em carbono/epóxi, quando submetidos a cargas compressivas uniaxiais. Os espécimes testados possuíam diferentes razões entre comprimento e diâmetro (variando de 2,50 a 11,25 e seqüências de laminação variadas (orientações de camadas. Os resultados dos ensaios foram comparados aos obtidos em análises realizadas com programas de elementos finitos e os fatores que influenciaram o comportamento mecânico destes cilindros foram analisados.The requirements of low weight and dimensional stability, combined with high strength and stiffness, for aerospace structures has prompted an increasing use of fiber reinforced materials in manufacturing such structures. In particular, carbon/epoxy cylinders have been widely used in aerospace applications. In this work, an experimental program was developed to determine failure loads, modulus of elasticity and failure modes of 47 carbon/epoxy cylinders shells under compressive loads. The specimens tested had several different length/diameter (from 2.50 to 11.25 ratios and laminate lay-up. These results were compared to the analytical results from finite element code and the most important factors influencing the mechanical behavior of this type of structure were analyzed.

  5. Fabricación y aplicación de los cilindros para laminación

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    Héctor Mosquera M.

    1981-07-01

    Full Text Available En el diseño y escogencia de los rodillos de laminación, usuarios y fabricantes deben tener en cuenta los siguientes lineamientos generales, que, por razones de espacio, trataremos en forma muy limitada en este articulo: 1 Influencia del proceso de fsbricación en las propiedades, costo y comportamiento del cilindro; 2 Efecto de la cornposicion y de los tratamientos térmicos en las propiedades del núcleo y de la superficie de trabajo; 3 Los requerimientos y exigencias a que va a ser sometido el cilindro en la aplicación específica para optimizar los materiales, procesos, tratamiento térmico y costos que inciden en el cilindro.

  6. Perfiles de Velocidad en el Cilindro de un Motor Alternativo Velocity Profiles in an Alternative Engine Cilinder

    OpenAIRE

    Simón J Fygueroa; Jesús O Araque; Carlos G Villamar

    2007-01-01

    El objetivo del presente trabajo es mostrar los resultados de la medición de las componentes de la velocidad del aire admitido en el cilindro simulado de un motor CFR (Cooperative Fuels Research) instalado en un banco de flujo estacionario al cual se ha conectado un sistema de adquisición de datos. Para determinar las velocidades se empleó un anemómetro de hilo caliente previamente calibrado. Se realizaron mediciones sobre diferentes puntos de varios planos transversales del cilindro para dif...

  7. Modelado sólido y análisis por elementos finitos de un cilindro de motor endotérmico de 2 tiempos de altas prestaciones

    OpenAIRE

    Pérez Ferreirós, Oscar

    2005-01-01

    El proyecto pretende explicar el proceso de evolución de un cilindro monobloque de motor endotérmico, 2 tiempos de altas prestaciones. El proceso real de evolución del motor consta de los siguientes pasos: - Modelado en 3D del cilindro, de una forma sencilla para que sea fácilmente modificable (modelado con Pro-Engineer WildFire). - Hipótesis de cálculo para realizar un cálculo de esfuerzos sobre los pernos que fijan el culatín y la culata del cilindro (Se proponen 2 estudio...

  8. Natural convection between parallel vertical plates; Convection naturelle entre plaques paralleles verticales

    Energy Technology Data Exchange (ETDEWEB)

    Robin, M; Schwab, B [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1957-07-01

    In the thermal study of a 'swimming-pool' type of pile, the flow of water between vertical plates of 'combustible' material must be investigated. Therefore starting from general equations of natural convection, we have determined, the law of distribution of velocities, then that of temperatures, and finally the value of the Biot-Nusselt number, assuming steady-state conditions (both dynamic and thermal) and a constant heat flow at the surface. An abacus (fig. 7, 8 and 9) allows working power to be related to the average velocity and to the heating of the water which passes through the pile. For purposes of comparison, the curves on the calculation presented by S. GLASSTONE (31) have been drawn. (author) [French] L'etude thermique d'une pile du type 'piscine' necessite l'etude de l'ecoulement de l'eau entre les plaques verticales de materiau 'combustible'. Nous avons donc, a partir des equations generales de la convection naturelle, determine la loi de repartition des vitesses, puis celle des temperatures et enfin la valeur du nombre de Biot-Niisselt, en supposant les regimes, dynamique et thermique, etablis et la densite de flux calorifique a la paroi constante. Un abaque (fig. 7, 8 et 9) permet de relier a la puissance de fonctionnement, la vitesse moyenne de l'echauffement de l'eau qui traverse la pile. On a trace a titre de comparaison, les courbes du calcul presente par S. GLASSTONE (3). (auteur)

  9. EL ESPACIO ANEXO ENTRE LO ARTIFICIAL Y LO NATURAL / The annexed space between the natural and the artificial

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    Juan José Tuset Davó

    2011-11-01

    Full Text Available RESUMEN En la ciudad contemporánea, lo público está perdiendo relevancia respecto a lo privado. Presenciamos, además, una insistencia en encontrar y recuperar el equilibrio entre ambos. Ante la pregunta de cuál es la forma adecuada que la arquitectura da a los espacios donde lo público encuentra su lugar, vemos que a lo largo de la modernidad, en las utopías socialistas del siglo XIX, en los experimentos de vivienda social europea, oculto en la ciudad suburbana norteamericana, en los revisionismos de los años 70 y en la nueva vivienda colectiva de los años 90, existen unos espacios anexos a la arquitectura que pretenden complementarla y corregir la progresiva sustitución de lo público por lo privado. Actualmente, el activismo pasivo urbano aprovecha cualquier oportunidad en la ciudad para reivindicar el encuentro colectivo. Este planteamiento radica en la firme voluntad de diseñar escenarios urbanos donde lo público encuentre acomodo. Para ello, la constitución del suelo como un plano moldeable acompañado por una cobertura arbórea nos ofrece las condiciones esenciales para que la gente se encuentre bien en un lugar. Entre lo artificial y lo natural, es posible pensar que hay un espacio anexo arquitectónico que se abre a los acontecimientos imprevistos para que tenga lugar otro sentido de lo público. SUMMARY In the contemporary city, what is public is losing importance with respect to what is private. Witness also, an insistence on finding and recovering the balance between them. The appropriate way that architecture makes spaces for what is public can be seen throughout modernity: in the socialist utopias of the nineteenth century; in the European social housing experiments; hidden in the North American suburban town; in the revisionism of the 70’s, and, in the new collective housing of the 90’s, there are spaces annexed to the architecture which are intended to complement and correct the progressive change from public to

  10. Marginal fit at cylinder-abutment interface before and after overcasting procedure Adaptação marginal na interface intermediário-cilindro antes e após as sobrefundições

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    Luciana Martins Cres Moraes

    2005-12-01

    diferenças inter-grupos (torques de 10 e 20Ncm, antes ou após as fundições foram analisadas pelo teste t pareado (p<0.05. Diferenças intra-grupo foram observadas em G-I (ouro, 20Ncm, parafuso de titânio, p=0,044 e em G-II (Ni-Cr-Be, 10Ncm, parafuso de ouro, p=0,002. As diferenças inter-grupos não foram observadas somente no grupo G-II (Ni-Cr-Be, 10 e 20Ncm, parafuso de titânio, p=0,534. Dentro dos limites deste estudo, as seguintes conclusões podem ser feitas: 1 Independente do tipo de parafuso, os valores de desadaptação marginal foram mais altos para os cilindros de Ni-Cr-Be após as fundições, mas dentro dos níveis aceitáveis de adaptação; 2 A combinação cilindro de ouro com parafuso de ouro ou de titânio foi a mais efetiva para reduzir o desajuste marginal; 3 Ambos os tipos de parafusos não melhoraram a adaptação marginal dos cilindros de Ni-Cr-Be após as fundições, e 4 Embora um torque de 20Ncm tenha melhorado a adaptação marginal em todas as situações, seu uso não é recomendado devido ao risco aumentado de falha na prótese . As ligas de Ni-Cr-Be podem ser usadas com sucesso nas restaurações unitárias sobre implantes, sem prejuízo na adaptação entre o abutment e o cilindro protético.

  11. Influence of calcinable cylinders cast in cobalt-chromium alloy on the passivity of implant-supported frameworks = Influência de cilindros calcináveis fundidos em cobalto-cromo na passividade de próteses implanto-suportadas

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    Triches, Diego Fernandes

    2009-01-01

    Full Text Available Objetivo: Este trabalho avaliou a influência da utilização de cilindros calcináveis no grau de passividade de infra-estruturas que simulam uma prótese parcial fixa de três elementos sobre dois implantes. Metodologia: Foram utilizados dois implantes de hexágono externo de 3,75 mm×10 mm, com seus respectivos pilares intermediários, fixados numa base de aço, formando o modelomestre. A partir disto, foram fabricadas dez infra-estruturas em liga de cobalto-cromo através da técnica de fundição por indução. Foram criados dois grupos: Grupo 1 utilizando cilindros pré-usinados para a fabricação de cinco infra-estruturas; Grupo 2 cinco infra-estruturas fundidas com cilindros de plástico calcináveis. Para avaliação da passividade foram utilizados extensômetros colados na região oclusal e cervical do pôntico das infra-estruturas. A medição foi realizada no momento do aperto do segundo parafuso protético com torque de 10Ncm. Os dados foram analisados pelo teste t de Student (a=0,05. Resultados: As médias (desvio-padrão dos grupos foram de 39,16 (24,74 mV/V no Grupo 1 e 43,76 (21,13 mV/V no Grupo 2. Não houve diferença estatisticamente significante entre os grupos (P=0,815. Conclusão: Considerando-se as limitações deste trabalho, sugere-se que o uso de cilindros calcináveis obtém o mesmo grau de passividade que o uso de cilindros pré-usinados

  12. Estudo comparativo dos traçados cefalometricos entre os planos de camper, plano oclusal de nobilo e plano oclusal natural, lado esquerdo e direito

    OpenAIRE

    Deise Luciane Paiva Oliveira

    2000-01-01

    Resumo: Na construção de próteses totais e pistas deslizantes de Nóbilo são utilizados como referência para o plano Dclusal , o ponto anterior, ângulo entre os Incisivos Centrais Superiores e as papilas retromolares. Após mais de 20 anos de experiência clínica com excelentes resultados, esse trabalho objetiva determinar as correlações entre os planos de Camper e o plano oclusal de Nóbilo, entre o plano de Camper e o plano oclusal Natural, entre o plano de Nóbilo e o plano oclusal Natural veri...

  13. IDENTIFICACION DEL CILINDRO NUDOSO EN IMÁGENES TC DE TROZAS PODADAS DE PINUS RADIATA UTILIZANDO REDES NEURONALES ARTIFICIALES

    OpenAIRE

    Rojas Espinoza,Gerson; Ortiz Irribarren,Oscar

    2010-01-01

    La factibilidad de identificar el cilindro nudoso en imágenes de tomografía computarizada de rayos X (TC) de trozas podadas de pino radiata (Pinus radiata D. Don), fue evaluada utilizando un método de clasificación supervisada basado en Redes Neuronales Artificiales (RNA). El proceso de clasificación consideró también la identificación de la zona libre de defectos y nudos. Treinta trozas podadas de pino radiata fueron escaneadas en un escáner médico multi-slice de rayos X, donde las imágenes ...

  14. Generación directa de vapor con colectores solares cilindro parabólicos Proyecto DIrect Solar Steam (DISS)

    OpenAIRE

    Zarza Moya, Eduardo

    2003-01-01

    La Generación Directa de Vapor (GDV) en los tubos absorbedores de los colectores solares cilindro parabólicos es considerada la opción tecnológica más atractiva para conseguir una sustancial reducción del coste de la energía térmica producida por este tipo de colector solar. Sin embargo, antes de poder comercializar sistemas solares con GDV e s necesario aclarar todas aquellas cuestiones técnicas que conlleva la existencia de un flujo bifásico circulando por el interior de los tubos absorbedo...

  15. Comparación de resultados de resistencias a compresión del hormigón empleando cilindros de dimensiones no estandarizadas

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    Erika A. Barbosa Guzmán

    1997-09-01

    Full Text Available Este trabajo de investigación dirigido por el Ing. J. Gabriel Gómez pretende evaluar la conveniencia de emplear cilindros de 7.5 cm. x 15 cm. y 10 cm. x 20 cm. para resistencias menores a 210 kg/cm2, comparando los resultados de resistencia a la compresión del hormigón de estos tamaños de probetas, con los del cilindro estándar, para lo cual se elaboraron tres diseños de mezcla 140, 170 y 200 kg/cm2

  16. O texto: lugar de encontro entre a língua natural e a arte literária

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    Ângela Vaz Leão

    2004-03-01

    Full Text Available Considerando o texto literário como o lugar de encontro entre a língua natural e a arte verbal, este trabalho faz uma análise estilística de um poema de Carlos Drummond de Andrade, “Festa no brejo”, publicado em Alguma poesia (1930. Descodificando as metáforas e interpretando os valores conotativos dos significantes em função do momento da criação do poema, a análise procura fazer uma leitura não só do enunciado mas também da enunciação, de modo a construir uma alegoria de sentido político historicamente datada.  

  17. Habilidade motora fundamental : analise comparativa entre situação laboratorial e "natural"

    OpenAIRE

    Helder Ferreira Isayama

    1997-01-01

    Resumo: O objetivo deste estudo foi verificar se existe variação na execução dos padrões de movimento arremessar e receber em duas situações ambientais diferentes: situação laboratorial (onde ocorreu um maior controle das variáveis) e situação "natural" (próxima da situação que ocorre em aula de Educação Física). Os participantes deste estudo foram 28 crianças de ambos os sexos e com 4 anos de idade. As crianças em movimento foram filmadas realizando as duas habilidades motoras fundamentais -...

  18. Potencial de cruzamento natural entre o arroz transgênico resistente ao herbicida glufosinato de amônio e o arroz daninho

    OpenAIRE

    Noldin,J.A.; Yokoyama,S.; Antunes,P.; Luzzardi,R.

    2002-01-01

    A utilização de cultivares de arroz irrigado resistentes a herbicidas não-seletivos, como o glufosinato de amônio, pode se constituir numa alternativa de controle de arroz daninho em lavouras de arroz irrigado. O objetivo deste trabalho foi avaliar a taxa e o sentido do cruzamento natural entre plantas de uma linhagem modificada geneticamente para resistência ao herbicida glufosinato de amônio (arroz GM) e ao arroz daninho. A taxa de cruzamento natural entre o arroz GM como receptor feminino ...

  19. Modelo matemático multivariable para un proceso de enfriamiento industrial de sólidos en cilindros rotatorios horizontales; Multivariable Mathematical Modelling of the Industrial Solid Cooling Process in Horizontal Rotational Cylinders

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    Ever Góngora Leyva

    2011-02-01

    Full Text Available En el presente trabajo se presentan los resultados relacionados con la modelación matemática del procesode enfriamiento de sólidos en cilindros rotatorios horizontales. Se exponen las ecuaciones que conformanel modelo y la fundamentación científica sobre la cual fueron obtenidas. La modelación se basaprincipalmente en el planteamiento de las ecuaciones del balance energético en forma dinámica, de lo cualse obtiene un sistema de ecuaciones diferenciales en derivadas parciales, que se complementan conotras que establecen la relación entre los coeficientes y parámetros físicos. The present work shows the results or the authors related with mathematical modelling the process ofcooling of reduced mineral in the rotary horizontal cooler; Equations that conform the model and its scientificfundamentals are exposed. The modelling is based, mainly, in the establishment of the energetic balancesin the dynamic way, that carries to obtainment of a partial derivates differential equations system, which iscomplemented with other algebraic equations that establish the relation between the different coefficientsand parameter.

  20. Natural co-occurrence of fungi and mycotoxins in poultry feeds from Entre Ríos, Argentina.

    Science.gov (United States)

    Monge, M P; Dalcero, A M; Magnoli, C E; Chiacchiera, S M

    2013-01-01

    A total of 120 pelleted poultry feed samples from Entre Ríos Province, Argentina, were evaluated. The aims were to investigate (1) the presence of relevant toxigenic fungi, as well as to determine the ability to produce aflatoxins (AFs) by Aspergillus section Flavi isolated strains; and (2) the natural co-occurrence of AFs, fumonisins (FBs), gliotoxin, diacetoxyscirpenol (DAS), HT-2 and T-2 toxin by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Total fungal counts were below the established value (1 × 10⁴ CFU g⁻¹). Aspergillus flavus and A. parasiticus were the only aflatoxigenic species isolated. Co-occurrence of fumonisin B₁ (FB₁), HT-2 and T-2 toxin was detected in 100% of the feeds, with mean levels from 4502 to 5813; 6.7 to 21.6 and 19.6 to 30.3 µg kg⁻¹, respectively. A large number of starter samples were co-contaminated with aflatoxin B₁ (AFB₁), FB₁, HT-2 and T-2 toxins. Gliotoxin and DAS were not found in this survey.

  1. Estudio de la variación del acabado superficial del cilindro en función de la presión de diseño en los hidromotores de pistones radiales. // Cylinder superficial finish variation study in function of design pressure in radial pistons hydromotors.

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    G. Morejón Vizcaino

    2003-01-01

    Full Text Available En este artículo se realiza un estudio teórico de la tendencia del comportamiento de la rugosidad superficial en los cilindrosde los motores hidráulicos tipo estrella para mantener constante la eficiencia volumétrica ante un incremento de la presiónde trabajo. Con el objetivo de determinar la tendencia de como influye la presión de diseño en la tecnología de construccióndel motor. La tendencia moderna es construir hidromotores con presión de diseño elevada para alcanzar altas densidades depotencia, para este empeño se utiliza la ley de Poiseuille para establecer el modelo de fuga entre cilindro y pistón. Elmodelo de la holgura se establece a partir de suponer lineal el comportamiento descrito en la literatura consultada, seobtienen resultados de rugosidad del cilindro contra presión para mantener la eficiencia volumétrica constante. Quedademostrado que el ensayo, para inferir los valores necesarios para el cálculo a realizar, se realiza sobre un cilindro similar alcilindro del motor.Palabras claves: Eficiencia volumétrica, algoritmo, motores hidráulicos, acabado superficial, fugas.____________________________________________________________________________Abstract.In this article is carried out a theoretical study of the tendency of superficial ruggedness behavior in cylinders of hydraulicmotors (star type to maintain constant the volumetric efficiency when is applied an increment of working pressure withthe objective of determining the tendency of how the design pressure influences in the motor construction technology.Since the modern tendency is to build hydromotors with risen design pressure in order to reach high power densities, forthis engagement the law of Poiseuille is used to establish the fugue pattern between cylinder and piston.The looseness model is stated starting from supposing lineal the behavior described in the consulted literature, results of thecylinder ruggedness against pressure are obtained to maintain

  2. Estudio de las fallas de soldadura en el proceso de fabricación de cilindros de aluminio para g l p

    OpenAIRE

    Torres Villamar, Artemio; Wiesner Falconi, Ignacio

    2009-01-01

    El desarrollo del presente trabajo de tesis: Estudio de las fallas de soldadura en el proceso de fabricación de cilindros de aluminio para gas licuado de petróleo, sirve para optimizar la operación de las diferentes etapas del proceso de soldadura, para el efecto se aplicaron técnicas ingenieriles, normas establecidas por el INSTITUTO ECUATORIANO DE NORMALIZACIÓN, como: INEN No. 117 e INEN No. 291 y normas internacionales como ASTM – B209 y ASTM – B211. Se realizaron análisis de fallas en...

  3. La macrografía como método de análisis de roturas en servicio. Caso práctico: camisas de cilindro

    OpenAIRE

    Cerro Prada, María Elena; Lopez Vazquez, Luis Bernardo; Torralba Marco, Rosario

    2013-01-01

    En este trabajo se analizan en profundidad tanto las características metalúrgicas (composición y estructura) como las geométricas (forma, anclaje, textura superficial, rugosidad), de las camisas de cilindro, así como la influencia de dichas características en la aparición de diversos tipos de fallos y/o un elevado consumo de aceite del motor.Los parámetros esenciales en las medidas de estas características son analizados a partir de la inspección macrográfica de la pieza. El fenómeno de cavit...

  4. Mapeo de desmontes en áreas de bosque nativo de la provincia de Entre Ríos, Argentina / Mapping of forest clearance in natural areas of Entre Ríos province, Argentine

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    Francisco Darío Maldonado

    2012-10-01

    Full Text Available El objetivo de este trabajo fue evaluar la aplicación de una metodología de detección y monitoreo de los desmontes, resistente a la irregularidad de la adquisición de imágenes en la región del Espinal entrerriano. El monitoreo de los cambios de uso y cobertura de las tierras es actualmente necesario para la política gubernamental de manejo y conservación de los recursos naturales. El área de estudio fue el Departamento Feliciano al norte de la Provincia de Entre Ríos, región noreste de Argentina. La vegetación es la típica formación arbórea del Espinal entrerriano sometido a la actividad ganadera extensiva. La metodología usó imágenes Landsat TM para formar un paquete multitemporal de bandas espectrales de la imagen de la segunda fecha y una banda intensidad del cambio obtenida por la técnica RCEN. Sobre este paquete se aplicó una técnica de “segmentación de imágenes por crecimiento de regiones” con semillado manual. Finalmente, se realizó el agrupamiento temático basado en la interpretación visual. En total, fueron detectados 1680ha desmontadas entre agosto de 2009 y diciembre de 2010, y 1140ha desmontadas entre diciembre de 2010 y abril de 2011. La segmentación de imágenes con bandas “intensidad del cambio” con semillado manual obtuvo buenos resultados para la detección de desmontes. Este resultado fue corroborado por la fiscalización in situ de los organismos gubernamentales.AbstractThe objective of this study was to evaluate the application of a methodology for detecting and monitoring forest clearance. The methodology should be unaffected to irregular image acquisition in the region of the “Espinal” (thorn forest in northeastern Argentina. Monitoring changes in land use and cover is needed for government policies of conservation and management of natural resources. The study area was the Department Feliciano northern of Entre Rios province. The typical vegetation is Espinal thorn forest, subjected

  5. Diseño de un motor radial de cinco cilindros. Generación de su prototipo virtual y simulación mecánica

    OpenAIRE

    FONS SOLAZ, JOSEP

    2015-01-01

    [ES] Las tareas a realizar serían, usando la aplicación de modelado Inventor: ¿Elaboración de los modelos 3D de todas las partes básicas del motor. ¿Generación del prototipo virtual. ¿Generación de los planos de detalle. ¿Simulación de las partes móviles. ¿Análisis de fatiga de uno de sus componentes. Fons Solaz, J. (2015). Diseño de un motor radial de cinco cilindros. Generación de su prototipo virtual y simulación mecánica. http://hdl.handle.net/10251/50186. TFGM...

  6. PERDAS NA COLHEITA MECANIZADA DO MILHO (Zea MaysEM FUNÇÃO DA VELOCIDADE E ROTAÇÃO DO CILINDRO TRILHADOR

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    Felipe Bueno Alves

    2015-12-01

    Full Text Available O milho é uma é uma planta da família Poaceae, originaria das regiões do continente Americano, sendo popular por toda a extensão do continente para os mais diversos fins. Devido a sua importância comercial e a necessidade de aumentar a eficiência durante a colheita, é necessário reduzir as perdas ante ao aumento na demanda mundial por alimentos. O trabalho foi realizado em uma propriedade agrícola privada, com o objetivo de avaliar perda de grãos que ocorre durante a da colheita. O estudo foi efetuado em blocos casualizados na proporção de três repetições no qual foram avaliadas as perdas em função dos fatores: velocidade de colheita (4 , 5 e 6 km h-1 e rotação do cilindro trilhador ( 5 rpm, 6 rpm e 7 rpm. Os parâmetros avaliados foram: perdas ocorridas no solo, taxa de cobertura e fluxo de Alimentação. A análise de regressão, nos mostra que na avaliação das perdas apenas o fator da rotação do cilindro trilhador foi relevante com teste F a 5% de probabilidade, a taxa de cobertura não foi influenciada a partir fatores analisados e o fluxo de alimentação foi influenciado pela velocidade de colheita com teste de F a 10% de probabilidade.

  7. Comparación del crecimiento de Argopecten purpuratus entre cohortes obtenidas de captación de larvas en ambiente natural y de hatchery Comparison of growth among cohorts obtained Argopecten purpuratus larval recruitment in natural and hatchery

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    Eduardo P Pérez

    2012-11-01

    Full Text Available En Chile los cultivos del ostión del norte Argopecten purpuratus han sido desarrollados intensivamente a partir de la captación de semillas en ambiente natural y desde principios de 1980 con semillas obtenidas en hatchery. Para aportar información sobre el desempeno de semillas de ostión del norte en este estudio se comparó, mediante ANCOVA, el crecimiento en longitud entre cohortes producidas a partir de semillas de ambiente natural y de hatchery en Tongoy, Chile. Se evaluó la consistencia de esta comparación en distintos anos y estaciones, comparándose parejas de cohortes producidas simultáneamente en los anos 2003 (primavera, 2005 (invierno y 2006 (verano. El análisis estadístico mostró que existen diferencias estadísticas significativas entre cohortes obtenidas en ambiente natural y aquellas obtenidas en hatchery. La prueba de Tukey evidenció diferencias significativas entre CN2003 y CH2003 como también entre CN2005 y CH2005, pero no así entre CN2006 y CH2006. Estas diferencias indican que las cohortes de semillas de ambiente natural crecieron más rápido que las de hatchery. La comparación interanual evidenció diferencias estadísticas significativas. Estos resultados son discutidos a la luz de dos factores: la temperatura de cultivo y la heterocigocidad de la población de cultivo.In Chile crops of the northern scallop Argopecten purpuratus have been developed intensively from seeds obtained in natural environment, and since 1980 from hatchery's seed, when this technique could be controlled and developed. In order to provide information on the performance of seeds of northern scallops in this study growth in length between cohorts produced from seeds obtained in natural environment (CN and hatchery (CH in Tongoy (Chile was compared using ANCOVA. We assessed the consistency of this comparison in different years and seasons. The compared cohorts are pairs of cohorts produced simultaneously in the years 2003 (spring, 2005

  8. Natural gas: conflict of competence between Federal Government and States; Gas natural: conflito de competencias entre os entes da federacao (Uniao versus Estados)

    Energy Technology Data Exchange (ETDEWEB)

    Meireles, Jose Antonio de Sousa [Petroleo Brasileiro S.A, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    This study examines the regulation of natural gas in Brazil: It is limited to the legal conflict due to the constitution of the republic which determines the distribution of competence between the Federal Government and the States. It introduces the controversy about the limits conferred on the Government by the constitutional law of 1988, related to the transport of natural gas by pipeline, in contrast to the power of states to exploit the services of gas by pipeline. It analyzes the operation of Project Gemini originated by the movement of gas by PETROBRAS in Sao Paulo, without the intervention of the state. The legal opinion favourable to the state argues that the term 'gas delivery services' according to the Brazilian Law leads to the understanding that the use of plural covers all services of gas flowing, without any limitation on the purpose, is a flexible destination (home, companies), or the type of the user. The argument against the state that says these services don't include the supply of gas to companies. In the past one could understand that the energy issue has always been controller by the Government on behalf of the people. It adds up to all this, the economy, high investments and great volume of gas for marketing that makes up the logic of this market, therefore justifying the construction of an own pipeline structure. (author)

  9. Natural gas: conflict of competence between Federal Government and States; Gas natural: conflito de competencias entre os entes da federacao (Uniao versus Estados)

    Energy Technology Data Exchange (ETDEWEB)

    Meireles, Jose Antonio de Sousa [Petroleo Brasileiro S.A, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    This study examines the regulation of natural gas in Brazil: It is limited to the legal conflict due to the constitution of the republic which determines the distribution of competence between the Federal Government and the States. It introduces the controversy about the limits conferred on the Government by the constitutional law of 1988, related to the transport of natural gas by pipeline, in contrast to the power of states to exploit the services of gas by pipeline. It analyzes the operation of Project Gemini originated by the movement of gas by PETROBRAS in Sao Paulo, without the intervention of the state. The legal opinion favourable to the state argues that the term 'gas delivery services' according to the Brazilian Law leads to the understanding that the use of plural covers all services of gas flowing, without any limitation on the purpose, is a flexible destination (home, companies), or the type of the user. The argument against the state that says these services don't include the supply of gas to companies. In the past one could understand that the energy issue has always been controller by the Government on behalf of the people. It adds up to all this, the economy, high investments and great volume of gas for marketing that makes up the logic of this market, therefore justifying the construction of an own pipeline structure. (author)

  10. Estudo comparativo entre o xenodiagnóstico natural e o artificial, em chagásicos crônicos

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    Adelair Helena dos Santos

    1995-12-01

    Full Text Available Foram realizados, simultaneamente, os xenodiagnósticos natural e artificial em 57 pacientes chagásicos, na fase crônica, com idades entre 26 e 83 anos, sendo 26 do sexo masculino e 31 do feminino, todos com sorologia reativa. Este estudo teve a finalidade de verificar a sensibilidade do método artificial, visando à sua utilização, em rotina de laboratório. Aplicaram-se 40 Dipetalogaster maximus de 1° estádiopara cada paciente tanto no xmodiagnóstico natural quanto no artificial. O xenodiagnóstico artificial foi significativamente mais sensível do que o natural para detectar o Trypanosoma cruzi, uma aplicaçao do artificial foi igual à do método natural aplicado três vezes. A "xenopositividade'' foi de 35,1%, sendo significativamente maior no sexo masculino, nas faixas etárias de 56 a 65 anos e 66 a 83 anos. Estes resultados mostram a viabilidade e a possibilidade do uso do xenodiagnóstico artificial em rotina de laboratório.In order to study the sensitivity of the xenodiagnosis technique a comparison between natural and artificial xenodiagnosis methods was performed in 57 chronic phase chagasic patients (31 female, with ages ranging from 26 to 83 years. All patients had demonsti-able antibodies against Trypanosoma cruzi. Forty first instar nymphs of Dipetalogaster maximus were used for each of both methods and for each patient. The positivity of xenodiagnosis artificial was significantly higher than the routine test method. These results did show that a single application of 40 bugs by the artificial method yielded a similar result than 3 applications of 40 bugs each, by the natural method.The positivity of xenodiagnosis was significantly higher in patients between 56-65 and 66-83 years old than at other ages. Males were predominant in this age group. These results showed the viability of artificial xenodiagnosis and its use in routine laboratory testing.

  11. Mejoras en la construcción de camisas de cilindro de motores de combustión interna ciclo diesel

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    Martínez-Pérez, F.

    2013-04-01

    Full Text Available This study deals with the different types of wear as well as other parameters present in the tribological system pistonsegment- cylinder in a combustion engine. By means of engineering methods were defined the wear rates in the three components of the system. The biggest wear in the analysis resulted in the cylinder shirt. Specialized methods applied were used to analyze the prevailing metallographic characteristics in its original construction, obtaining a gray melted iron with perlitic matrix. A new material with bainitic matrix has been proposed for increasing wear resistance. To demonstrate the efficiency of this new product, the experimental techniques carried out, were based on a dynamometric testing in a internal combustion engine diesel cycle Scania of 150 kW. It was exposed to a full charge during 500 h with 30 % of potency rising. Compared with the perlitic one, it has been proved that the bainitic matrix allows a better result. Besides, a superior dimensional stability was obtained. The piston segments had a similar wear rate in both materials in reference to the original tribological pair of the project.El análisis del sistema tribológico pistón-segmentos-cilindro durante el funcionamiento de un motor de combustión, permitió valorar las características, mediante el empleo de métodos de ingeniería usados en el mundo, para calcular las tasas de desgaste y otros parámetros resultantes en cada uno de los componentes del sistema antes mencionado. Se definió la camisa de cilindro, como elemento fundamental de los usados en el sistema tribológico y se analizaron las características metalográficas predominantes en su construcción actual de aleaciones de hierro fundido gris con matriz perlítica, lo que permitió proponer una nueva aleación con matriz bainítica que brindara una mayor resistencia al desgaste. Para demostrar el rendimiento de este nuevo producto propuesto se llevó a cabo una técnica experimental basada en el

  12. Propiedades mecánicas de los aceros aleados al cromo utilizados en la fabricación de cilindros de apoyo de trenes de laminación

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    Mammeri, A.

    2003-04-01

    Full Text Available Back up rolling rolls are very large mechanical components which have to be designed to withstand very high contact stresses produced, under the rolling load, in the region between the working and the back up rolls, along with severe wear actions. In this investigation, the thermal treatment (bainitic isotermic quenching followed by several temper treatments of these components is described and their most characteristic properties related to the in-service behaviour of these products are determined, using hardness, compresión, fracture toughness and sliding wear tests.

    Los cilindros de apoyo de los trenes de laminación de chapa, tanto en caliente como en frío, son unos elementos mecánicos grandes que deben diseñarse para soportar fuertes tensiones de contacto (contra el cilindro de trabajo, bajo la presión de laminación y también acciones importantes de desgaste superficial. En este trabajo, tras la descripción del tratamiento térmico más conveniente que es necesario aplicar a estos cilindros, basado en un tratamiento de temple bainítico seguido de tratamientos de revenido, se han determinado las propiedades más características simulativas del comportamiento en servicio de estos productos, para lo que se han utilizado ensayos de dureza, compresión, tenacidad a fractura y ensayos de desgaste en seco por deslizamiento.

  13. Mapeo de desmontes en áreas de bosque nativo de la provincia de Entre Ríos, Argentina Mapping of forest clearance in natural areas of Entre Ríos province, Argentine

    OpenAIRE

    Maldonado, Francisco Darío; Centro Regional de Geomática-CEREGEO/FCyT-Facultad de Ciencia y Tecnología. UADER - Universidad Autónoma de Entre Ríos; Fabián Sione, Walter; Universidad Nacional Luján, Argentina; Gilberto Aceñolaza, Pablo; Centro de Investigaciones Científicas y Transferencia de Tencología la Producción, Argentina

    2012-01-01

    El objetivo de este trabajo fue evaluar la aplicación de una metodología de detección y monitoreo de los desmontes, resistente a la irregularidad de la adquisición de imágenes en la región del Espinal entrerriano. El monitoreo de los cambios de uso y cobertura de las tierras es actualmente necesario para la política gubernamental de manejo y conservación de los recursos naturales. El área de estudio fue el Departamento Feliciano al norte de la Provincia de Entre Ríos, región noreste de Argent...

  14. Interações entre herbicidas e protetores para o controle de capim-annoni em pastagem natural Interactions among herbicides and safeners for the south african lovegrass control in natural grassland

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    Ives Clayton Gomes dos Reis Goulart

    2012-10-01

    Full Text Available A similaridade botânica do capim-annoni com as espécies forrageiras nativas ou cultivadas dificultam o seu controle em pastagens naturais. O objetivo deste trabalho foi avaliar o efeito de associações entre herbicidas e protetores sobre o controle de capim-annoni e a seletividade em pastagem natural. Foram realizados dois experimentos a campo em área de pastagem natural típica do Bioma Pampa avaliando-se herbicidas aplicados em pré e pós-emergência. Outro experimento foi conduzido em casa de vegetação com as espécies capim-annoni e grama forquilha onde foram avaliados os herbicidas glufosinate-ammonium e imazethapyr. Em ambos os experimentos os herbicidas foram avaliados isolados ou em associação com os protetores anidrido naftálico, dietholate e fluxofenim. Os experimentos a campo demonstraram que os herbicidas aplicados em pré ou pós-emergência em interação com os protetores não proporcionaram controle satisfatório do capim-annoni e nem aumento da seletividade à pastagem natural. Por outro lado, o experimento em condições controladas indicou a ocorrência de sinergismo do herbicida glufosinate-ammonium em interação com os protetores anidrido naftálico, dietholate e fluxofenim sobre o capim-annoni. As diferenças relacionadas a estádio de desenvolvimento e densidade de infestação estão relacionadas as variações das respostas nos estudos a campo e em condições controladas. A utilização de herbicidas em associações com protetores apresenta potencialidade de controle seletivo de capim-annoni quando aplicado em plantas em estádios iniciais de desenvolvimento.The botanical similarity of the invasive weed Eragrostis plana Nees (South African lovegrass difficult its selective control in natural pastures. The aim of this study was to evaluate the effect of the association between herbicides and safeners on the control of E. plana and on the selectivity to the natural pastures. Two experiments were conducted at

  15. Processos da vida, processos da matéria: os diferentes sentidos de natureza entre biólogos e físicos Life processes, matter processes: the different meanings of nature among biologists and physicists

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    Carolina Lima Alves Belo

    2012-12-01

    Full Text Available Aplicamos a metodologia de análise do Discurso do Sujeito Coletivo (DSC para comparar as representações sociais relacionadas ao termo natureza em dois grupos de docentes pesquisadores - um de físicos, outro de biólogos - em uma universidade pública brasileira. Foram identificadas cinco classes de discurso coletivo entre os sujeitos investigados, cada uma das quais foi expressa por ambos os grupos. Dois discursos identificados - que denominamos natureza é o natural (DSC1 e natureza é tudo (DSC2 - associam natureza ao não tocado ou originalmente feito pelo homem (DSC1 e a tudo o que compõe o universo (DSC2. Embora de maior adesão em ambos os grupos, o primeiro discurso teve uma adesão mais significativa entre os físicos; o segundo, por sua vez, foi mais frequente entre os biólogos. Dentre as classes de discursos de menor adesão, uma delas foi caracterizada pela dúvida dos sujeitos sobre o significado efetivo de natureza. Os resultados foram discutidos sob duas abordagens: (a do ponto de vista das relações entre os termos natureza e ambiente no âmbito da educação ambiental, tendo em vista a importância social dos cientistas na formação e na transmissão de conhecimentos relacionados ao assunto; e (b do ponto de vista das diferenças de fundamentos filosóficos (ontológicos e epistemológicos entre os dois grupos de cientistas da natureza.We have applied the methodology of Collective Subject Discourse (CSD analysis to compare the social representations related to the term nature in two groups of teachers-researchers - one of physicists and the other of biologists - from a Brazilian public university. Five classes of collective discourse were identified among the subjects researched, each one of them being expressed by both groups. Two discourses identified - which we labeled nature is the natural (DSC1 and nature is everything (DSC2 - associate nature to that which has not been touched or originally made by men (DSC1, and to

  16. Desenvolvimento sustentável: um discurso sobre a relação entre desenvolvimento e natureza Sustainable development: a discourse about the relation between development and nature

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    Hugo Juliano Duarte Matias

    2008-04-01

    Full Text Available Trata-se do estudo de definições de desenvolvimento sustentável, elemento fundamental de repertórios interpretativos para a relação entre desenvolvimento e natureza. As definições respondiam a um questionário aplicado a 355 estudantes de vários cursos de uma universidade federal. Realizou-se uma análise de conteúdo que buscou a concepção de natureza e sua relação com desenvolvimento nessas definições. Foram encontradas três matrizes discursivas: (a "economicista" - a necessidade de desenvolvimento subordina a necessidade de preservação da natureza, cujo sentido é "recursos naturais"; (b discurso "bem intencionado" - a necessidade de desenvolvimento subordina a de preservação da natureza, cujo sentido é "fragilidade"; (c "esvaziado" - desenvolvimento e natureza são disjuntos. Conclui-se sobre a importância do estudo da atribuição de significado à natureza para explicar como as pessoas pensam a relação entre desenvolvimento e natureza, e sobre como essas matrizes discursivas podem justificar práticas sociais.This study presents the analysis of definitions of sustainable development, as a basic element of interpretative repertoires for the relation between development and nature. Three hundred and fifty five students of several courses of a federal university answered a questionnaire, providing the definitions, thereafter submitted to content analysis to examine the concept of nature and its relation with development. Three discursive matrixes were found: (a the "economic bias" one - the necessity of development subordinates the need of nature preservation nature is a "natural resources"; (b the "good intentions" discourse - the necessity of development subordinates the necessity of preservation - nature is "fragility"; (c the "empty" - one development and nature are separate. It is concluded that the attribution of meaning to nature is important to explain how people think about the relation between development and

  17. Humboldt entre a filosofia da natureza e a ciência moderna / Humboldt between the philosophy of nature and modern science

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    Thiago Brito

    2015-08-01

    Full Text Available This work aims to identify the influence of German thought, above all, the philosophy of nature in Humboldt's “modern science”. He brings from the philosophers the conception of the harmonious totality of nature as an organism to recognize the existence of a connection between the forces of nature and its form captured by intuition. The philosophy of nature exposes the bond between the visible world and the upper world that escapes the senses. Humboldt, however, is not only concerned with the contemplation of nature, but also seeks to measure it, bringing it closer to his eyes to understand its internal connections. The technical and scientific instruments are also an extension of his gaze and his hand. Humboldt want to combine the measurement and quantification with the enjoyment afforded by intellectual intuition in touch with the landscape. The Cosmos, therefore, is presented as a whole to be deciphered through observations and comparisons, but also through an aesthetic perception of natural phenomena.

  18. Entre el patrimonio natural y el cultural habita el mito: Isla del río Cuale (Puerto Vallarta, Jalisco, México

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    Andrade Romo, Edmundo

    2007-01-01

    Full Text Available International tourist places experience continuous changes, faster than non tourist cities or towns. This urban -tourist evolution is an excellent investigation subject to study local cultural heritage and its partner-anthropological implications, Puerto Vallarta, Jalisco, one of the three most important tourist centers in Mexico has not been the exception. This work notice how natural elements are transformed into cultural ones; by diachronic analysis diverse moments that conform and explain local identity are distinguished as well as the mythological construction about the local origin. Finally the former condition and social perception about the island, is exposed as the most significant natural-cultural element for people in Puerto Vallarta.

  19. Entre Aldeia Kaingang ou Parque Natural: o processo de configuração de um conflito socioambiental na disputa pelo Morro do Osso, Porto Alegre, RS

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    Guilherme Fuhr

    2012-12-01

    Full Text Available This article describes the socio-environmental conflicts around the logics of occupation at Morro do Osso (Bone’s Hill in Porto Alegre, Brazil. Disputes involving different types of appropriation, use and significance of this area have been motivating actions of quite heterogeneous institutions and social organizations. Since the late 70’s, environmentalists who were concerned about the growing urbanization mobilized to ensure the hill’s preservation, a process that culminated on the creation of Morro do Osso Natural Park. Ten years later, in 2004, Kaingang indigenous people began to claim the demarcation of an indigenous land at Morro do Osso on an area that overlaps the Park. Thus, two territorialities emerged and began to polarize the conflict: on the one hand, those who favor maintaining the Morro do Osso Natural Park institutionalization; on the other hand, efforts for the Topë pën Kaingang’s land recognition and demarcation. Therefore, precisely the resulting tensions and implications of this polarization will be discussed here in order to bring out part of the discursive arena and the consequences of this territorial dispute, that, to date, has been demonstrating nothing dialogical and no prospect of consensus agreement between the parties involved, following a logic of “winners and losers” to the outcome of the dispute.

  20. Estudio de propiedades térmicas y mecánicas en espumas de mezclas poliméricas entre copolímero de etileno-acetato de vinilo (EAV y caucho natural (CN

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    Daniel Alberto Morales Rivera

    2006-01-01

    Full Text Available Se estudiaron algunas propiedades de espumas poliméricas, preparadas con mezclas de copolímeros de etileno-acetato de vinilo (EAV y caucho natural (CN: comportamiento térmico, por análisis térmico diferencial (DSC, y análisis termogravimétrico (TGA, resistencia a la tracción, compresión set y contenido de gel. Se establecieron relaciones entre la composición de las mezclas y las propiedades medidas en función de la reticulación y el espumado, teniendo en cuenta estudios previos realizados en espumas poliolefínicas con densidades similares.

  1. La inconmensurabilidad empírica entre la teoría de la selección natural darwiniana y el diseño inteligente de la teología natural

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    Santiago Ginnobili

    2014-08-01

    Full Text Available Suele señalarse la fuerte influencia que la teología natural tuvo sobre Darwin en su conceptualización del fenómeno de la adaptación. La teoría de la selección natural explicaría el mismo fenómeno que los teólogos naturales querían explicar: la adaptación. Recientemente ha sido señalado, sin embargo, que la forma darwiniana de conceptualizar la adaptación es novedosa. Las adaptaciones de la teología natural presupondrían la idea de que los organismos existen para la realización y manutención del equilibrio natural establecido por el creador. El punto de este trabajo discutir esta cuestión, asumiendo el marco del estructuralismo metateórico.

  2. What justifies the lack of alignment between natural gas and crude oil prices in the period 2006-2007; O que justifica o deslocamento entre os precos do gas natural e do petroleo no periodo 2006-2007

    Energy Technology Data Exchange (ETDEWEB)

    Abreu, Ana Lucia Vahia de; Pinelli, Marcelo Santos

    2008-07-01

    The objective of the work is to show that the mismatch between Brent and Henry Hub in the period 2006-2007 is mainly due to the local characteristics of natural gas market. After the beginning of 2008, the price of Henry Hub is increasing and returning to the long term relationship (nonlinear) with Brent. Even with local features, the natural gas market tends to be a market of tradable goods. (author.

  3. Natureza ou Deus: afinidades panteístas entre Goethe e o "brasileiro" Martius Nature or God: pantheistic affinities between Goethe and Martius, "the Brazilian"

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    Marcus V. Mazzari

    2010-01-01

    Full Text Available Na segunda parte do romance As afinidades eletivas, a jovem Ottilie registra em seu diário as seguintes palavras: "Digno de veneração é apenas o naturalista que sabe descrever e expor o mais estranho, o mais insólito, com sua cor local, com todo o seu entorno e sempre em seu elemento mais próprio. Como eu gostaria de ver-me um dia na presença de Humboldt, ouvindo suas narrações!". A passagem revela, ao lado da admiração de Goethe por Humboldt, o seu interesse pelas ciências naturais, o qual experimenta significativa intensificação em setembro de 1824, quando estabelece contato pessoal com o botânico Carl F. P. von Martius. Em seu jovem interlocutor Goethe logo reconhece as qualidades de naturalista que no romance são atribuídas a Humboldt. Passa então a acompanhar com máximo interesse as publicações em que Martius elabora as pesquisas, observações e experiências realizadas ao longo dos três anos e meio em que percorreu, junto com o zoólogo Spix, mais de dez mil quilômetros de território brasileiro. Nasce assim um intercâmbio científico e cultural dos mais fecundos, o qual se enraíza especialmente nas concepções panteístas de que partilhavam o velho poeta de Weimar e o jovem botânico. Além de enfocar alguns aspectos das viagens brasileiras de Martius, este ensaio tem por objetivo expor a sua recepção por Goethe e discutir ainda eventuais influxos sobre sua produção literária. A reelaboração, em 1825, de uma das canções que Goethe, 43 anos antes, havia redigido com o subtítulo Brasilianisch deve-se seguramente a esse intercâmbio. Pretende-se discutir também a hipótese de que determinados textos e concepções de Martius tenham deixado vestígios em passagens da segunda parte do Fausto.In the second part of the novel Elective Affinities, young Ottilie registered the following words in her diary: "The only inquirers into nature whom we care to respect, are such as know how to describe and to represent

  4. Potencial de cruzamento natural entre o arroz transgênico resistente ao herbicida glufosinato de amônio e o arroz daninho Outcrossing potential of glufosinate-resistant rice to red rice

    Directory of Open Access Journals (Sweden)

    J.A. Noldin

    2002-08-01

    Full Text Available A utilização de cultivares de arroz irrigado resistentes a herbicidas não-seletivos, como o glufosinato de amônio, pode se constituir numa alternativa de controle de arroz daninho em lavouras de arroz irrigado. O objetivo deste trabalho foi avaliar a taxa e o sentido do cruzamento natural entre plantas de uma linhagem modificada geneticamente para resistência ao herbicida glufosinato de amônio (arroz GM e ao arroz daninho. A taxa de cruzamento natural entre o arroz GM como receptor feminino e o arroz daninho como doador de pólen foi de 0,22 e 0,02%, respectivamente para os ecótipos de arroz daninho com glumas de cor palha e com glumas pretas. No caso inverso, quando o arroz daninho foi o receptor feminino e o arroz GM o doador de pólen, a taxa de cruzamento foi de 0,26 e 0,14%, para o arroz daninho com glumas palha e com glumas pretas, respectivamente. Os resultados deste estudo evidenciaram que ocorreu cruzamento natural entre o arroz GM e o arroz daninho em percentuais que variaram de 0,14 e 0,48%, respectivamente para o arroz preto e para o arroz vermelho. A fim de minimizar a possibilidade de hibridação, medidas de controle eficientes devem ser adotadas no sentido de prevenir a coincidência de floração das plantas de arroz daninho com a das plantas de arroz GM cultivado.The broad spectrum non-selective herbicide ammonium glufosinate, combined with genetically modified glufosinate-resistant rice cultivars (GM rice, may comprise a rice weed control system for red rice and other weeds that infest Brazilian rice fields. The objective of this study was to evaluate the potential for outcrossing and gene flow of GM rice to red rice. Natural outcrossing between adjacent field plots (1 m x 1 m was measured during the 1999/2000 production season in Brazil. The outcrossing rate of the GM rice as the female parent to red rice, as the pollen donor, was 0.22% for strawhull and 0.02% for the blackhull red rice, respectively. In the reciprocal

  5. Conditions of competition between the production of water by desalination and natural resources; Les conditions de concurrence entre la production d'eau par dessalement et les ressources naturelles

    Energy Technology Data Exchange (ETDEWEB)

    Gaussens, J [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1969-07-01

    A close examination of the local supply and demand for fresh water is involved when considering a sea water desalination plant in a given region. This examination makes it possible in most cases to undertake a thorough study of the natural resources, resulting in the use of desalination being rejected. After confirming this fact by precise examples, the authors consider that the preliminary study should be extended, taking into account the complementary character of natural resources and desalination systems: contribution to peak demand, contribution to base demand. This analysis results in a classification of the main user regions according to certain economic criteria defining their suitability for the use of desalination processes. (author) [French] Envisager une installation d'eau de mer dans une region donnee, entraine un examen attentif de l'offre et de la demande locale en eau douce. Cet examen permet de conduire dans la plupart des cas a une etude approfondie des ressources naturelles qui aboutit a ecarter le recours au dessalement. Apres avoir constate ce fait, par des exemples precis, les auteurs estiment que l'on doit pousser plus loin l'etude preliminaire en tenant compte de la complementarite entre les ressources naturelles et les systemes de dessalement: contribution a la demande de pointe, contribution a la demande de base. Cette analyse conduit a classer les regions utilisatrices essentielles selon certains criteres economiques definissant leur aptitude a l'utilisation des procedes de dessalement. (auteur)

  6. Conditions of competition between the production of water by desalination and natural resources; Les conditions de concurrence entre la production d'eau par dessalement et les ressources naturelles

    Energy Technology Data Exchange (ETDEWEB)

    Gaussens, J. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1969-07-01

    A close examination of the local supply and demand for fresh water is involved when considering a sea water desalination plant in a given region. This examination makes it possible in most cases to undertake a thorough study of the natural resources, resulting in the use of desalination being rejected. After confirming this fact by precise examples, the authors consider that the preliminary study should be extended, taking into account the complementary character of natural resources and desalination systems: contribution to peak demand, contribution to base demand. This analysis results in a classification of the main user regions according to certain economic criteria defining their suitability for the use of desalination processes. (author) [French] Envisager une installation d'eau de mer dans une region donnee, entraine un examen attentif de l'offre et de la demande locale en eau douce. Cet examen permet de conduire dans la plupart des cas a une etude approfondie des ressources naturelles qui aboutit a ecarter le recours au dessalement. Apres avoir constate ce fait, par des exemples precis, les auteurs estiment que l'on doit pousser plus loin l'etude preliminaire en tenant compte de la complementarite entre les ressources naturelles et les systemes de dessalement: contribution a la demande de pointe, contribution a la demande de base. Cette analyse conduit a classer les regions utilisatrices essentielles selon certains criteres economiques definissant leur aptitude a l'utilisation des procedes de dessalement. (auteur)

  7. Parque natural y turismo de masas: ¿compatibilidad? estudio de las relaciones entre el Parque natural de las lagunas de la mata y torrevieja y la estación Balnearia de Torrevieja (españa

    Directory of Open Access Journals (Sweden)

    Frédéric Farra

    2002-01-01

    Full Text Available El estudio que se propone es un trabajo científico necesario para el conocimiento de la evolución de las relaciones hombre/medio a comienzos del tercer milenio: tratar de entender si un Parque natural regional es compatible o no con el turismo de masas. Para responder a esta pregunta, se estudia el caso peculiar de la estación balnearia2 española de Torrevieja y del Parque natural regional de La Mata y Torrevieja al sureste de la península Ibérica, un laboratorio interesante para reflexionar sobre este tema

  8. natural

    Directory of Open Access Journals (Sweden)

    Elías Gómez Macías

    2006-01-01

    Full Text Available Partiendo de óxido de magnesio comercial se preparó una suspensión acuosa, la cual se secó y calcinó para conferirle estabilidad térmica. El material, tanto fresco como usado, se caracterizó mediante DRX, área superficial BET y SEM-EPMA. El catalizador mostró una matriz de MgO tipo periclasa con CaO en la superficie. Las pruebas de actividad catalítica se efectuaron en lecho fijo empacado con partículas obtenidas mediante prensado, trituración y clasificación del material. El flujo de reactivos consistió en mezclas gas natural-aire por debajo del límite inferior de inflamabilidad. Para diferentes flujos y temperaturas de entrada de la mezcla reactiva, se midieron las concentraciones de CH4, CO2 y CO en los gases de combustión con un analizador de gases tipo infrarrojo no dispersivo (NDIR. Para alcanzar conversión total de metano se requirió aumentar la temperatura de entrada al lecho a medida que se incrementó el flujo de gases reaccionantes. Los resultados obtenidos permiten desarrollar un sistema de combustión catalítica de bajo costo con un material térmicamente estable, que promueva la alta eficiencia en la combustión de gas natural y elimine los problemas de estabilidad, seguridad y de impacto ambiental negativo inherentes a los procesos de combustión térmica convencional.

  9. Entre/Plantas

    OpenAIRE

    Montoro Coso, Ricardo; Sonntag, Franca Alexandra

    2014-01-01

    La palabra Inter-és proviene etimológicamente de las palabras latinas inter y esse; y significa “lo que está-entre dos o más personas, o sea lo que las une pero también las separa”. Los prefijos inter- y entre-, en la mayor parte de los casos, describen estados o acciones ambiguas de los términos que preceden. De esta operación aditiva surgen maclas de vocablos; el inter-sticio como la “hendidura o espacio que media entre dos cuerpos o entre dos partes de un mismo cuerpo”; y así sucesivamente...

  10. Identificación paramétrica en lazo cerrado de sistema de accionamiento neumático para cilindro de doble efecto

    Directory of Open Access Journals (Sweden)

    Oscar Caldas Flautero

    2013-01-01

    Full Text Available Los modelos matemáticos que permiten comprender un sistema y predecir o simular su comportamiento suelen presentar inconvenientes cuando se cuenta con poca información a priori o se desconocen los parámetros físicos. Por esa razón, en este trabajo se presenta la identificación de sistemas como estrategia para abordar la construcción de modelos dinámicos complejos, proponiendo soluciones para tratar el comportamiento no-lineal de un sistema neumático, representado por un actuador de doble efecto y un par de válvulas proporcionales para el control de la presión de alimentación y el caudal. Se presenta una aproximación almodelomatemático para determinar el orden del sistema, la identificación en lazo abierto y lazo cerrado y la comparación entre modelos de procesosARX yARMAX, con diferente orden, para concluir con simulaciones comparativas entre la respuesta del sistema real y la del identificado.

  11. Regulamentação pública e conduta das firmas no sistema agroindustrial da borracha natural entre 1997 e 2000 Regulation and behavior of firms in Brazil's natural rubber agro-industrial system between 1997-2000

    Directory of Open Access Journals (Sweden)

    Augusto Hauber Gamero

    2002-01-01

    Full Text Available A necessidade de regulamentação no sistema agroindustrial (SAG da borracha natural no Brasil é evidente. Desde a metade do século, quando o país passou a importar esse produto, vários esforços governamentais vêm sendo definidos, objetivando o desenvolvimento sustentável do setor da produção agrícola nacional de borracha. No ano de 1997, criou-se uma política de subvenção direta à produção. Dada a estrutura desse SAG, associada à conjuntura do mercado internacional e a uma regulamentação falha do governo federal, começaram a surgir indícios de abuso de poder de mercado pela indústria pneumática instalada no país, principal consumidora do produto. Utilizando o arcabouço teórico da organização industrial, neste artigo se procurou levantar evidências nesse sentido.The need for regulation of Brazil’s natural rubber agro-industrial system (SAG is evident. Since the middle of the 20th century, when the country began importing rubber, many governmental efforts have been made to promote the sustainable development of Brazil’s natural rubber productive sector. In 1997, the Brazilian government created a direct subvention policy to assist rubber producers. Given the structure of Brazil’s SAG, the international rubber market, and imperfect regulation by the Federal Government, it would not be unexpected to find signs that Brazil’s largest natural rubber consumer, the domestic tire industry, has begun to abusively exercise its market power. Using the theoretical structure of Industrial Organization, this paper tries to show evidences of this abuse.

  12. Legal and regulatory possibility of connection between interstate natural gas distribution networks instead of constructing transport pipelines; Possibilidade juridoco-regulatoria da conexao interestadual entre redes de distribuicao de gas natural como alternativa a construcao de gasodutos de transporte

    Energy Technology Data Exchange (ETDEWEB)

    Goncalves, Gustavo Mano [Andrade, Mano - Advogados, Rio de Janeiro, RJ (Brazil)

    2012-07-01

    According to Revista Brasil Energia (2011a), the local natural gas distribution concessionaire in the State of Sao Paulo Gas Brasiliano Distribuidora - GBD, plans to expand its distribution pipeline network in western Sao Paulo up to the border of the State of Minas Gerais, near the region known as Minas Triangle where a connection with the pipeline network of the State of Minas Gerais' natural gas distribution company, Companhia de Gas de Minas Gerais - GASMIG shall be built in order to supply natural gas to an ammonia plant to be built by PETROBRAS in the City of Uberaba. Still according to the publication, the project described above would be an alternative to the construction of a transportation pipeline that, since the enforcement of the Gas Law - Law No. 11.909/09 (Brasil, 2009), should be subject to concession contracts preceded by a complex, and probably delayed, planning and procurement. However, there is a transportation pipeline project, deriving from the Bolivia-Brazil transportation pipeline near the city of Sao Carlos, in Sao Paulo, crossing the Minas Triangle and finishing in the State of Goias. This project is owned by TGBC Company. The existence of two gas pipeline projects with very similar paths to supply virtually the same regions and based on different regulatory frameworks, one consisting of a connection between the distribution networks of different States and another based on the concept of pipeline transportation of gas under the legal and regulatory federal jurisdiction raises the discussion about the possibility of legal and regulatory interstate connections of distribution pipeline networks as an alternative to planning, allocation and construction of a transportation pipelines. This article aims to examine the legal and regulatory foundations of both alternatives and delineate the limits of performance of States and Federal Government on legislation and regulation concerning the movement of natural gas pipeline through the Country

  13. The convergence of the natural gas industry and electric power industry: the Brazilian case; Convergencia entre a industria do gas natural e a industria de energia eletrica: o caso brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, Jose Ricardo Uchoa Cavalcanti [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Programa de Planejamento Energetico

    2008-07-01

    The main purpose of this paper is to analyze the convergence between power (electric sector) and natural gas industries in Brazil. It also shows how this convergence happens in the USA market and its applicability in the Brazilian market. At the end some conclusions and suggestions are presented to satisfy the Brazilian market, which behaves in a different way as the USA market, i.e. the Brazilian market does not follow seasonal pattern but an aleatory pattern in thermoelectric plants. (author)

  14. Planejamento e controle da produção de cilindros para laminação: um estudo de caso quantitativo Production management of rolling mill rolls: a quantitative study case

    Directory of Open Access Journals (Sweden)

    Laerte José Fernandes

    2012-01-01

    Full Text Available Este trabalho apresenta um modelo de otimização-simulação aplicado em um estudo de caso real no setor de cilindros para laminação de uma siderúrgica, buscando melhorar o gerenciamento da área/equipamento gargalo da linha de produção. A simulação atuou em conjunto com um modelo de otimização da programação linear inteira (PLI para melhorar o atendimento de prazo junto aos clientes em uma produção não seriada. Como resultado deste procedimento combinado da PLI e simulação, o processo produtivo foi otimizado e as filas de espera e o lead-time foram reduzidos, melhorando o atendimento aos clientes.This article presents a simulation-optimization model application for a real case study in the rolling mill roll sector of a steel plant. The purpose of this study was to get a better area/equipment bottleneck management in the production line. The simulation was used together with an ILP (Integer Linear Programming optimization model, in order to improve customer service in a made-to-order production. As a result of this ILP and Simulation combined approach, the productive process was optimized and both queues and lead-time were reduced, improving customer service.

  15. Planejamento e controle da produção de cilindros para laminação: um estudo de caso quantitativo Production management of rolling mill rolls: a quantitative study case

    Directory of Open Access Journals (Sweden)

    Laerte José Fernandes

    2013-03-01

    Full Text Available Este trabalho apresenta um modelo de otimização-simulação aplicado em um estudo de caso real no setor de cilindros para laminação de uma siderúrgica, buscando melhorar o gerenciamento da área/equipamento gargalo da linha de produção. A simulação atuou em conjunto com um modelo de otimização da programação linear inteira (PLI para melhorar o atendimento de prazo junto aos clientes em uma produção não seriada. Como resultado deste procedimento combinado da PLI e simulação, o processo produtivo foi otimizado e as filas de espera e o lead-time foram reduzidos, melhorando o atendimento aos clientes.This article presents a simulation-optimization model application for a real case study in the rolling mill roll sector of a steel plant. The purpose of this study was to get a better area/equipment bottleneck management in the production line. The simulation was used together with an ILP (Integer Linear Programming optimization model, in order to improve customer service in a made-to-order production. As a result of this ILP and Simulation combined approach, the productive process was optimized and both queues and lead-time were reduced, improving customer service.

  16. A relação entre o social e o natural nas abordagens de hazards e de desastres The relation between the social and the natural in the approach of hazards and disasters

    Directory of Open Access Journals (Sweden)

    Marcos Antônio Mattedi

    2001-12-01

    Full Text Available O artigo aborda as teorias dos Hazards e dos Desastres. Nos últimos anos estas duas tradições teóricas têm recebido novos impulsos pela renovação de seus marcos de referência conceitual. Construídas em torno de uma longa tradição de pesquisa empírica, estas teorias explicam os impactos provocados por fenômenos como enchentes, terremotos, tornados e epidemias mediante a integração analítica das dimensões natural e social. Neste sentido, seu estudo pode fornecer subsídios para a interpretação destes problemas no Brasil.The article deals with the theory of hazards and disasters. Over the past years, these two theoretical traditions have received new impulse through the renovation of their conceptual foundations. Constructed around a long tradition of empirical research, these theories explain the impacts brought by phenomena like floods, earthquakes, tornadoes and epidemics through the analytical integration of social and natural dimensions. In this regard, its study may provide grants in order to interpret these problems in Brazil.

  17. Revisión del proceso siderúrgico de colada continua mediante solidificación rápida. Sistema de dos cilindros de colada conformación

    Directory of Open Access Journals (Sweden)

    Ibarrondo, I.

    2008-12-01

    Full Text Available In order to compete in the future steel market and to maintain market share, the steelmakers will need to use new efficient technologies capable of supplying steel strip products of high quality at low cost. In this way, the strip casting technology by twin roll method is one of the most important research area in the iron and steel industry today.This review makes a general description of the strip casting technology as well as its different steps, such us; metal delivery and casting, solidification process, hot rolling reduction step, etc...Through mathematical and physical models, the influence on microstructure, texture, surface quality and mechanical properties of the materials obtained by this method are described as a function of processing parameters, specially the roughness of the rolls.The manufacturing of carbon, stainless and electrical steels involves smaller capital and operating cost, lower gas emissions, and an opportunity to create new grades due to a faster solidification rate that leads to a different solidification structures.In sight of all this it is likely that Strip Casting technology will make a profound impact on the manufacturing landscape of the 21st century.

    A la vista de la evolución del mercado siderúrgico mundial, se hace evidente que las instalaciones siderúrgicas deberán desarrollar nuevos procesos siderúrgicos, capaces de producir productos de alta calidad y valor añadido, con menores inversiones de capital, ahorro energético y disminución de emisiones contaminantes. Dentro de este contexto, la tecnología de colada continua por solidificación rápida mediante dos cilindros, se presenta como una de las más interesantes a investigar. En el presente trabajo se realiza una descripción general del proceso de colada continua mediante solidificación rápida así como de sus diferentes etapas; alimentación del sistema y colada, proceso solidificación, etapa de laminación en caliente

  18. Diagnostico de un motor de gasolina de cuatro cilindros mediante el análisis de vibraciones//Diagnostic of a four cylinder gasoline engine using vibration analysis

    Directory of Open Access Journals (Sweden)

    Jairo Andrés-Grajales

    2015-09-01

    Full Text Available Este trabajo presenta el análisis de vibraciones de un motor de combustión interna, operando con diferentes mezclas de combustible, para identificar condiciones de operación con falla, utilizando un banco de pruebas y la falla estudiada fue el “misfire”. Tres mezclas de combustible fueron probadas: E8, E20 y E30. Aplicando la transformada rápida de Fourier a las señales, se compararon las condiciones de operación normal y con falla entre combustibles, buscando componentes de frecuencia característicos para evaluar la validez de los estudios realizados hasta ahora en gasolina pura. Los resultados muestran que el comportamiento utilizando las diferentes mezclas de combustible es similar al reportado con gasolina pura, y los componentes de frecuencia que diferencian la condición normal y con falla también están presentes en las mezclas de combustible. Se extrajeron características estadísticas de las señales en el dominio de la frecuencia para simplificar el proceso de identificación. Palabras clave: motor de combustión interna, vibraciones, detección de fallas, problema de encendido, mezclas gasolina-etanol.______________________________________________________________________________AbstractThis paper presents the vibration analysis of an internal combustion engine, using different fuel blends, to identify fault operating conditions. A purpose built engine test bench was used and the fault studied was misfire. Three fuel blends were used: E8, E20 and E30. Fast Fourier transform was applied to the signals. A comparison between normal and faulty operating conditions was carried with every fuel used, looking for characteristic frequency components, to assess the validity of past studies on misfire performed on pure gasoline. The results show that the behavior using the different fuel blends is similar to the one reported on pure gasoline, and that the frequency components that differentiate normal and faulty conditions are also

  19. Endostatin (EntreMed).

    Science.gov (United States)

    Grosios, K

    2000-07-01

    EntreMed has licensed the worldwide rights to the angiogenesis inhibitor Endostatin, a 20 kDa C-terminal fragment of collagen XVIII, from the Children's Hospital of Boston, a teaching affiliate of Harvard Medical School. It is being developed as a potential cancer treatment and may also be useful in certain types of blindness and arthritis [227427]. EntreMed filed an IND for Endostatin in June 1999 [334125] and as of September 1999, phase I trials were underway [341462]. As of April 2000, the company had initiated plans for testing low doses of Endostatin in cancer patients using continuous infusion and sc administration in a further phase I study to be conducted in Europe [361594]. A phase I trial of Endostatin which will evaluate the safety and efficacy of Endostatin at a range of doses in no more than 100 cancer patients has been initiated. The trial will take place at the University of Texas MD Anderson Medical Center and the University of Wisconsin Cancer Center in Madison. The National Cancer Center will be sponsoring the trial, which is expected to be completed in late 2000. As of March 2000, there had been no serious adverse events attributable to Endostatin administration. The first report from this trial is expected in autumn 2000 [341462], [366312]. The mechanism of action for Endostatin remains unclear, although reports from the 91st AACR Meeting in April 2000 showed that recombinant human endostatin bound to a number of tropomyosin cDNAs in a library screen [362039]. In preclinical studies, repeated administration of Endostatin consistently shrank primary tumors and did not produce any drug resistance. In mice, a variety of tumors which had progressed to 1 to 2% of total body weight, regressed to microscopic, dormant lesions following Endostatin treatment [231418], [231470], [270673]. Types of cancers which respond to Endostatin include lung, skin, vascular and fibrosarcomas. Toxicology studies in cynomolgus monkeys showed that bolus injections of

  20. A experiência com gás natural/GLP no polo gesseiro do Araripe, PE

    Directory of Open Access Journals (Sweden)

    M. A. C. Oliveira

    2014-06-01

    Full Text Available Gipsita, sulfato de cálcio dihidratado (CaSO4.2H2O, encontrada no Polo Gesseiro do Araripe, Pernambuco, é considerada a de melhor qualidade no mundo, com teor de pureza variando de 88% a 98%, contendo 79% de sulfato de cálcio e 21% de água de cristalização. Quando desidratada até a perda de 1,5 moléculas de água, constitui-se num hemidrato estável, denominado gesso, cujas características são a capacidade de rehidratação (reação exotérmica, o fenômeno de pega e o retorno à estrutura cristalina. O polo fornece 95% do gesso consumido no Brasil. As reservas são estimadas em 1,2 bilhões de toneladas, quinto volume do mundo. Os fornos do Polo podem ser de contato direto ou indireto entre os gases de combustão e o minério, e quanto ao tipo de funcionamento, batelada ou contínuo. No indireto, os gases aquecem uma superfície metálica que transfere o calor usando lenha ou óleo BPF, já que o contato dos mesmos com a gipsita não é recomendável, podendo ocorrer mistura do material, acarretando alteração das propriedades do gesso. No direto, o gás flui no interior de um cilindro metálico, permitindo maior eficiência na troca térmica. A utilização de gás natural traz vantagens como eficiência da troca térmica, maior volume de processamento e preservação do ecossistema, por ser pouco poluente. Sua combustão é limpa, isenta de fuligem e outros materiais que possam prejudicar o meio ambiente com baixos teores de nitrogênio, dióxido de carbono, água e compostos de enxofre. O gás natural chegou ao Araripe em março de 2011, numa experiência piloto, com expectativa de um salto de qualidade e de volume na produção local. Mais limpo e eficiente, poderá oferecer a segurança energética necessária para que o setor atenda melhor uma demanda crescente, evitando o desmatamento da região que usa a lenha como combustível.

  1. Entre monos y centauros

    Directory of Open Access Journals (Sweden)

    Serge Gruzinski

    2005-02-01

    Full Text Available    ¿Qué relación puede existir entre Ovidio, Tiziano y unos tlacuilo indios de la sierra otomí ? ¿Qué tienen en comun  el pintor mas famoso del siglo XVI , el veneciano Tiziano (+ 1576,  un poeta latino del primer siglo despues de Cristo, Publio Ovidio Nasón (-43/17 ,  y unos artistas indígenas anónimos del pueblo otomi de Ixmiquilpan?   Aunque la reunión de estos tres nombres parezca extraña y sorprendente, los hilos que los unen no son nada anecdóticos.  Permiten entender mejor la manera...

  2. Entre formigas e estrelas

    Directory of Open Access Journals (Sweden)

    Vinicius Prates

    2013-06-01

    Full Text Available Esta resenha apresenta o livro Reagregando o social: uma introdução à teoria do ator-rede, última obra do filósofo francês Bruno Latour publicada no Brasil. Nele, o autor se propõe a elaborar uma suma da crítica que faz aos conceitos usualmente aceitos de “social”, o que vem desenvolvendo ao longo dos últimos anos de produção intelectual. Neste processo ele criou a “Teoria-ator-rede”, que busca reestabelecer teoricamente as relações entre o que chama de mediadores “humanos” e “não-humanos”.

  3. Entre grafos y bits

    Directory of Open Access Journals (Sweden)

    Carla Boserman

    2014-02-01

    Full Text Available Este texto se propone ahondar en las intersecciones de lo analógico y lo digital, en el encuentro de la baja y la alta tecnología. Tomando consciencia de la materialidad de ambas esferas para pensar desde ahí en objetos, prácticas de dibujo y documentación que puedan aportar otras formulaciones aplicables a métodos de investigación. Entre grafos y bits, diseccionaremos un objeto, el #relatograma, analizaremos su ecología y propondremos una reflexión acerca de su condición digital que genera paisajes por agregación #coreograma, explorando así su capacidad de ser reporte y aporte cognitivo. Between graphs and bits  Abstract This paper delves into the intersections of analogue and digital cultures, at the points at which low and high technology converge. While acknowledging the materiality of these two spheres, I aim to produce an enquiry into objects, drawings and documentation practices that can contribute to developing new research methods. Among graphs and bits, I will dissect one object: the #relatograma, in order to analyze its ecology and propose a critical reflection on its digital condition and its ability to produce aggregated landscapes, or what I define as #coreograma. I will thereby explore its ability to be share information and produce knowledge. Keywords: Material culture; research methods; digital objects; drawing; #relatograma.

  4. The influence of screw type, alloy and cylinder position on the marginal fit of implant frameworks before and after laser welding Influência do tipo de parafuso, liga e da posição do cilindro na adaptação marginal das infra-estruturas sob implantes antes e após a soldagem a laser

    Directory of Open Access Journals (Sweden)

    Daniela Castilio

    2006-04-01

    Full Text Available Misfit at the abutment-prosthetic cylinder interface can cause loss of preload, leading to loosening or fracture of gold and titanium screws. OBJECTIVES: To evaluate the influence of screw type, alloy, and cylinder position on marginal fit of implant frameworks before and after laser welding. METHODS: After Estheticone-like abutments were screwed to the implants, thirty plastic prosthetic cylinders were mounted and waxed-up to fifteen cylindrical bars. Each specimen had three interconnected prosthetic components. Five specimens were one-piece cast in titanium and five in cobalt-chromium alloy. On each specimen, tests were conducted with hexagonal titanium and slotted gold screws separately, performing a total of thirty tested screws. Measurements at the interfaces were performed using an optical microscope with 5mm accuracy. After sectioning, specimens were laser welded and new measurements were obtained. Data were submitted to a four-way ANOVA and Tukey's multiple comparisons test (alpha=0.05. RESULTS: Slotted and hexagonal screws did not present significant differences regarding to the fit of cylinders cast in titanium, either in one-piece casting framework or after laser welding. When slotted and hexagonal screws were tested on the cobalt-chromium specimens, statistically significant differences were found for the one-piece casting condition, with the slotted screws presenting better fit (24.13µm than the hexagonal screws (27.93 µm. Besides, no statistically significant differences were found after laser welding. CONCLUSIONS: 1 The use of different metal alloys do exert influence on the marginal fit, 2 The slotted and hexagonal screws play the exclusive role of fixing the prosthesis, and did not improve the fit of cylinders, and 3 cylinder position did not affect marginal fit values.A desadaptação na interface abutment-cilindro protético pode causar perda da pré-carga, levando ao afrouxamento ou fratura dos parafusos de ouro e tit

  5. Geochemical monitoring using noble gases and carbon isotopes: study of a natural reservoir; Monitoring geochimique par couplage entre les gaz rares et les isotopes du carbone: etude d'un reservoir naturel

    Energy Technology Data Exchange (ETDEWEB)

    Jeandel, E

    2008-12-15

    To limit emissions of greenhouse gases in the atmosphere, CO{sub 2} geological sequestration appears as a solution in the fight against climate change. The development of reliable monitoring tools to ensure the sustainability and the safety of geological storage is a prerequisite for the implementation of such sites. In this framework, a geochemical method using noble gas and carbon isotopes geochemistry has been tested on natural and industrial analogues. The study of natural analogues from different geological settings showed systematic behaviours of the geochemical parameters, depending on the containment sites, and proving the effectiveness of these tools in terms of leak detection and as tracers of the behaviour of CO{sub 2}. Moreover, an experience of geochemical tracing on a natural gas storage has demonstrated that it is possible to identify the physical-chemical processes taking place in the reservoir to a human time scale, increasing interest in the proposed tool and providing general information on its use. (author)

  6. Genetic variability in natural populations of Zeyheria montana mart. from the Brazilian Cerrado Variabilidade genética entre e dentro de populações naturais de Zeyheria montana mart. do Cerrado brasileiro

    Directory of Open Access Journals (Sweden)

    Bianca Waléria Bertoni

    2007-08-01

    ção da reação de amplificação, nove iniciadores selecionados geraram 105 fragmentos RAPD reprodutíveis, sendo que a maioria (60,0% foi polimórfica. A análise molecular de variância (AMOVA mostrou que a variabilidade dentro de populações (84,03% foi maior que entre populações (15,97%. As estimativas de variação fiST (0,1597 indicam estruturação populacional moderadamente alta. O agrupamento por meio de UPGMA, a ordenação pelo NMDS e o teste de Mantel entre as matrizes de distâncias genéticas e geográficas demonstraram que a estruturação encontrada segue um modelo de "ilhas", onde uma única população de tamanho infinito pode ter dado origem às populações atuais de Zeyheria, sem relação com sua posição espacial. Com base nos resultados obtidos foi estruturado um banco de germoplasma de indivíduos, representando a variabilidade da espécie. Adicionalmente, as informações deste estudo são importantes para dar suporte a estratégias de conservação de Z. montana.

  7. ESTUDO DA RETENÇÃO ENTRE RESINA ACRÍLICA PARA BASE DE DENTADURA E DENTES DE RESINA ACRÍLICA

    Directory of Open Access Journals (Sweden)

    FAJARDO Renato Salviato

    1997-01-01

    Full Text Available Foi avaliada a resistência de união entre dentes e base de dentadura, ambos de resina acrílica. Os dentes foram incluídos em blocos cilíndricos de resina e, posteriormente, torneados, para se obterem cilindros de 5mm de diâmetro. Sobre a extremidade do dente, era adaptado um padrão de cera de mesmo diâmetro, que, após inclusão na mufla, era substituído por resina acrílica termicamente ativada pelo método de processamento convencional de base de dentadura. Como variáveis, usaram-se duas marcas de dentes, duas fases de inclusão (plástica e borrachóide e aplicação ou não de detergente e monômero sobre os dentes. Os corpos-de-prova, antes dos ensaios de ruptura por tração, foram armazenados em água destilada, a 37ºC, por 2 semanas. Os resultados mostraram que: marca de dente e fase de condensação não influíram nos resultados; somente o uso de detergente ou de monômero aumenta a retentividade e o seu uso conjunto apresenta efeito acumulativo.

  8. Relación entre la colonización de la encina por Curculio elephas Gyllenhal (Coleoptera, Curculionidae) y el periodo de caída natural de frutos

    OpenAIRE

    Soria Iglesias, Francisco Javier; Jiménez, A.; Villagrán Pinteño, Miguel; Ocete Rubio, María Elvira

    2005-01-01

    En un encinar del SW de España se ha realizado el seguimiento de una población del gorgojo Curculio elephas Gyll. (Coleóptera, Curculionidae) durante 2001 y 2002. La finalidad del trabajo fue valorar y relacionar la incidencia de la infestación del insecto con el proceso de maduración y caída natural de frutos de la encina. Durante ...

  9. Darwin ò el conflicto aparente entre la teoría de la selección natural y la hipótesis de la pangénesis

    Directory of Open Access Journals (Sweden)

    Luis Eugenio Andrade

    2009-10-01

    Full Text Available RESUMEN Tendiendo como objetivo buscar una compresión más integral de la obra de Darwin, presento una reflexión sobre el desarrollo de sus ideas, resaltando las influencias que la visión mecánica de la naturaleza por un lado y el lamarckismo y las teorías recapitulacionistas por el otro, ejercieron sobre él. Se destaca la originalidad de su propuesta de teoría de la selección natural surgida por comparación con el cruce dirigido y fundamentada en una interpretación de la naturaleza como sistema económico donde se aplica la ley de población de Malthus. Sin embargo, quiero relatar que su preocupación por el estudio de las leyes de la variación lo llevo a matizar varias situaciones donde muestra la dificultad de explicar la influencia del medio ambiente en la variación evolutiva. En este contexto se comprende la importancia histórica que tiene su fallida presentación de la hipótesis de la pangénesis. Para concluir sostengo que a pesar de que el concepto de evolución por selección natural funciona bien cuando consideramos que las variaciones individuales son producto del azar, esto no fue excusa para Darwin, ni debe serlo hoy en dia  para nosotros, para continuar con su intento obstinado de investigar el verdadero papel de las influencias del medio ambiente en la producción de las variaciones evolutivas. ABSTRACT In order to provide a more integral view of Darwin`s work, I present the development of his ideas, showing the influence of the mechanical view of nature on one hand, and the Lamarckian recapitulationism on the other. The originality of the theory of evolution by natural selection is highlighted, while showing its connection with the analogy with breeders directed crosses and its theoretical justification inspired in Mathus population theory. However, it is explained how Darwin`s concern about the problem of the origin of evolutionary variations led him to consider the role of the environment in the production of

  10. Los derechos naturales entre la ley natural permisiva y la autoconservación: Revisando la tesis de Brian Tierney sobre el origen de la idea de los derechos subjetivos

    OpenAIRE

    Segovia, Juan Fernando

    2017-01-01

    Se revisa la tesis -muy difundida- de Brian Tierney sobre los orígenes medievales (canonistas y juristas) de los derechos subjetivos, que contrasta con la de Michel Villey, que aquí se defiende. El estudio sigue el análisis de Tierney desde el origen de la noción de los derechos subjetivos, a la idea de la una ley natural permisiva y la fusión de propiedady autoconservación. Fil: Segovia, Juan Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológi...

  11. Humanismo, liberdade e necessidade: compreensão dos hiatos cognitivos entre ciências da natureza e ética Humanism, freedom and need: an understanding of the cognitive gaps between the natural sciences and ethics

    Directory of Open Access Journals (Sweden)

    Ana Maria C. Aleksandrowicz

    2005-09-01

    Full Text Available Com freqüência opõe-se a constatação crescente, norteada pelas ciências naturais, do determinismo que rege o funcionamento dos organismos vivos a um humanismo de fundamentação kantiana: está em questão a real condição da autonomia humana que repercute naquela de sua responsabilidade individual e social. Com base na filosofia espinosista, Henri Atlan endossa os postulados deterministas das investigações científicas, conciliando com eles, entretanto, a afirmação da plena liberdade e responsabilidade do ser humano. Num primeiro momento, tendo como pano de fundo estratégico distinções nas concepções de "natureza humana", revisaremos as diferentes abordagens da ética e da ciência às teses da autonomia e do determinismo. A seguir, focalizaremos a discussão do dilema por Atlan, em seu ensaio de 2002, La Science est-elle inhumaine? Essai sur la libre nécessité. Concluímos ressignificando "humanismo" nos termos das novas exigências conceituais do século 21.The growing ascertainment, guided by the natural sciences, of the determinism that rules how living organisms work is often contrasted with a humanism of Kantian foundation. At issue here is the actual condition of human autonomy, reverberating on that of human responsibility both at the social and at the individual levels. Based on Spinozist philosophy, Atlan endorses the deterministic postulates of scientific investigations, though he reconciles them to the statement of the human being’s full freedom and responsibility. Initially, with the strategic background of distinctions in conceptions of human nature, we will review the different approaches of autonomy and determinism on the part of ethics and science. We will then concentrate on the discussion of the dilemma by Atlan, in his essay of 2002, La Science est-elle Inhumaine: essai sur la libre nécessité. Our conclusion redefines the meaning of "humanism" pursuant to the new conceptual demands of the 21st century.

  12. Análise hierárquica para escolha entre agregado natural e areia de britagem de rocha para confecção de argamassas de revestimento

    Directory of Open Access Journals (Sweden)

    Alécio Júnior Mattana

    Full Text Available Muitas vezes as tomadas de decisão na indústria da construção são complexas, pois envolvem muitas variáveis, sendo trabalhoso agrupá-las e realizar uma avaliação global do problema. O método de análise hierárquica (AHP é uma ferramenta que auxilia na tomada de decisão em problemas de engenharia, nos quais diversos fatores devem ser levados em conta na escolha de métodos, produtos ou materiais. O objetivo principal deste artigo é mostrar a forma de aplicação do método de análise hierárquica para sistematizar tomadas de decisões na indústria de argamassas industrializadas. É apresentado um roteiro para verificar o traço de argamassa que apresenta melhor desempenho, considerando determinados resultados de ensaios e um conjunto de critérios previamente estabelecidos. A aplicação da AHP para esse problema resulta em um índice global que caracteriza o desempenho dos materiais com relação ao conjunto de critérios utilizado. O resultado apontou que a técnica de análise hierárquica pode ser eficaz apara apoiar a tomada de decisões na escolha de argamassas industrializadas. Na análise hierárquica realizada neste estudo, concluiu-se que, para os materiais envolvidos neste trabalho, a substituição da areia natural por areia de britagem é vantajosa em 78% dos casos.

  13. Interação entre inimigos naturais: Trichogramma e Bacillus thuringiensis no controle biológico de pragas agrícolas = Interaction between natural enemies: Trichogramma and Bacillus thuringiensis in pest control

    Directory of Open Access Journals (Sweden)

    Ricardo Antonio Polanczyk

    2006-04-01

    Full Text Available O objetivo deste trabalho foi avaliar os efeitos adversos de Bacillus thuringiensis (Bt nos parasitóides de ovos Trichogramma pratissolii e Trichogramma pretiosum. Suspensões de 6 isolados de Bt: E-3, E-10, E-15, E-16, E-19, E-20 e Bt kurstaki foram misturadas com mel (1:1, como fonte de alimento, e cartelas com ovos de Anagasta kuehniella foram fornecidas para o parasitismo. O experimento foi mantido em BOD a 25 + 1ºC, umidade relativa de 70+ 10% e fotofase de 14 horas. Foram analisados a longevidade, os parasitismos diário, acumulado e total. Não houve influência dos tratamentos sobre a longevidade e todos ostratamentos em T. pratissolii e E-3, E-10, E-16 e E- 19 em T. pretiosum diminuíram o tempo necessário para os parasitóides atingirem 80% de parasitismo. Apesar dessa aceleração do parasitismo, o Bt não influenciou o total de ovos parasitados, mostrando-se como tática de controle que pode ser usada com Trichogramma em programas de MIP.The goal of this work was to detect the possible side-effectsprovoked by Bacillus thuringiensis (Bt strains on eggs parasitoids Thichogramma pratissolii and Trichogramma pretiosum. Six strains of Bt: E-3, E-10, E-15, E-16, E-19, and E-20 and Bt kurstaki were assayed in honey drop to stimulate the feeding of the parasitoids in each treatment and offered simultaneously displays with Anagasta kuehniella eggs. The experiment was maintained in a climatized chamber at 25+ 1ºC, RH 70+ 10%, and photophase of 14 hours. The longevity, the daily, the accumulated, and the total parasitism were observed. No treatments affected the longevity of both parasitoids. All treatments in T. pratissolii and E-3, E-10, E-16, and E-19 in T. pretiosum decreased the time necessary to reach 80% of parasitism. The lack of deleterious effects of Bt on these parasitoids suggests that these natural enemies can be used together in IPM programs.

  14. El periodista, entre el Poder

    Directory of Open Access Journals (Sweden)

    JL Dader

    2014-10-01

    Full Text Available El periodismo se debate, desde sus orígenes, entre la reproducción servil de versiones interesadas o la distorsión de propio cuño, por conocimiento insuficiente de una realidad que sólo puede entrever. Los poderes que amenazan la independencia periodística no han hecho más que crecer o aumentar su habilidad con el paso del tiempo. Surgido como ‘oficio de esclavos’ en la época romana, muchos indicadores actuales parecen retornarle al punto de partida: relaciones públicas estratégicas a gran escala, auge de los ‘spin doctors’, extorsión descarnada en las democracias más débiles y populismo de las redes sociales, entre otros. Todo ello, unido o alentado por la degradación interna y el desaliento de la propia institución periodística incapaz de distanciarse de todas esas fuerzas. Su respuesta no puede ser de alianza o competencia con los poderes que la circundan, sino de hábil distanciamiento para moverse entre todos ellos sin dejar de ejercer la vigilancia que los ciudadanos siguen necesitando de su ejercicio profesional.

  15. Effets Josephson generalises entre antiferroaimants et entre supraconducteurs antiferromagnetiques

    Science.gov (United States)

    Chasse, Dominique

    L'effet Josephson est generalement presente comme le resultat de l'effet tunnel coherent de paires de Cooper a travers une jonction tunnel entre deux supraconducteurs, mais il est possible de l'expliquer dans un contexte plus general. Par exemple, Esposito & al. ont recemment demontre que l'effet Josephson DC peut etre decrit a l'aide du boson pseudo-Goldstone de deux systemes couples brisant chacun la symetrie abelienne U(1). Puisque cette description se generalise de facon naturelle a des brisures de symetries continues non-abeliennes, l'equivalent de l'effet Josephson devrait donc exister pour des types d'ordre a longue portee differents de la supraconductivite. Le cas de deux ferroaimants itinerants (brisure de symetrie 0(3)) couples a travers une jonction tunnel a deja ete traite dans la litterature Afin de mettre en evidence la generalite du phenomene et dans le but de faire des predictions a partir d'un modele realiste, nous etudions le cas d'une jonction tunnel entre deux antiferroaimants itinerants. En adoptant une approche Similaire a celle d'Ambegaokar & Baratoff pour une jonction Josephson, nous trouvons un courant d'aimantation alternee a travers la jonction qui est proportionnel a sG x sD ou fG et sD sont les vecteurs de Neel de part et d'autre de la jonction. La fonction sinus caracteristique du courant Josephson standard est donc remplacee.ici par un produit vectoriel. Nous montrons que, d'un point de vue microscopique, ce phenomene resulte de l'effet tunnel coherent de paires particule-trou de spin 1 et de vecteur d'onde net egal au vecteur d'onde antiferromagnetique Q. Nous trouvons egalement la dependance en temperature de l'analogue du courant critique. En presence d'un champ magnetique externe, nous obtenons l'analogue de l'effet Josephson AC et la description complete que nous en donnons s'applique aussi au cas d'une jonction tunnel entre ferroaimants (dans ce dernier cas, les traitements anterieurs de cet effet AC s'averent incomplets). Nous

  16. The relationship between the industry of natural gas and the sector of electric power: perspectives for the united development of such segments in Bahia; Estudo da industria do gas natural e sua relacao com o setor eletrico na Bahia: perspectivas para uma integracao sinergica entre tais segmentos

    Energy Technology Data Exchange (ETDEWEB)

    Prates, Daniel O. [PETROBRAS, Rio de Janeiro, RJ (Brazil); Rocha, Georges S. [Bahia Univ., Salvador, BA (Brazil). Dept. de Engenharia Quimica. Curso de Especializacao em Engenharia do Gas Natural

    2005-07-01

    The industry of natural gas is finding great inter-relationship with the electric power section due to aspects technical, economical and institutional. In Brazil, this world tendency is increasing quickly, above all, starting from the crisis of energy lived by the Country in 2001. In spite of, in spite of being the third producing largest and consume-pain in Brazil, Bahia now is deficient in natural gas, committing the thermal-electricity generation due to lack of this energy one as well as, of the deficiency in the transport and distribution infrastructure. Besides, Bahia is the Brazilian state with the largest population without access the electric power. This motivates reflections concerning the potentialities of the natural gas to lessen this situation. Therefore, this work has an objective to evaluate the structures of the industry of the natural gas and the electric section in Bahia and the relationship among these segments. Initially, it tries to present the reasons that it is taking the development of the electric power generation in consonance with the industry of the gas. Soon afterwards, it comes a retrospective abbreviation of the electric power generation in Brazil and in Bahia, emphasizing the recent tendency of use of the natural gas for the thermal-electricity generation. In the following point, it talks about the reservations and production of natural gas and he/she comes the structure of commercialization of gas from the production/importation to the distribution in Brazil and in Bahia. To proceed, the investment plans are evaluated for the enlargement of the production, transport and distribution of natural gas and electricity in Bahia. Finally, the article is concluded being discussed the difficulties and perspectives of increase and integration of the segments of natural gas and electric power in Bahia, tends in view the institutional aspects, technique and economical of a model that influences the use of the natural gas and contribute to the

  17. Conections between Foreign Direct Investment, access to natural resources and local development in a mining area: The case of Antamina, Ancash Conexiones entre inversión foránea directa, acceso a recursos naturales y desarrollo local en un área minera: el caso de Antamina, Ancash

    Directory of Open Access Journals (Sweden)

    Carlos Miguel Incháustegui Pérez

    2010-12-01

    Full Text Available During the 90s the Peruvian state embraced a neoliberal tendency with the objective of reactive the economy with the attraction of Foreign Direct Investment (FDI. The mining sector was one of the most benefits due of these new policy reforms that encouraged the expansion of a number of multinational companies to explore and exploit mineral resources in the most remote places in the country. The arrival of these big companies not only meant a huge macroeconomic growth but also a substantial injection of capital and a change in natural resources access. These changes led to number of protest in the peasant communities located in areas affected by mining that give rise to the creation of new perspectives for achieving local development. One way of studying the interaction between these actors—the mine and communities—is through the use of discourse analysis and narratives.Thereby, this article has the main objective of find out connections among FDI, natural resources access and local development in nine communities of the Ayash river watershed and the multinational Antamina mine company (AMC. In this sense, we used qualitative methods to describe and analyze direct and indirect effects into local communities and into their resources access. We also analyze how the absence of the state may cause an inappropriate use of Corporate Social Responsibility (CSR and thus motivate communities to claim compensation for environmental damage. Therefore we use Discourse Analysis for outline this protest in development narratives and establish new considerations in current and futures FDI projects in mining.Durante los años noventa el Estado peruano adoptó una tendencia neoliberal con el objetivo de reactivar la economía con la atracción de Inversiones Foráneas Directas (IFD. El rubro minero fue uno de los sectores más beneficiados por estas nuevas reformas políticas que habilitaron a una serie de compañías multinacionales explorar y explotar los

  18. Comparative análisis between synthetic and natural grass for soccer, in terms of economy, social and sport rentability, in the university enviroment Estudio comparativo sobre los costes de mantenimiento y rentabilidad económica, social y deportiva entre camposde fútbol con pavimentos de césped natural y artificial en el ámbito universitario

    Directory of Open Access Journals (Sweden)

    A. Sánchez

    2010-09-01

    Full Text Available

    En este trabajo se analizan las características de una superficie sintética, de última generación, para la práctica del fútbol. Como consecuencia de los nuevos avances tecnológicos se ha conseguido un pavimento que reproduce el juego en condiciones muy similares a las de un campo de césped natural. En el estudio se tienen en cuenta los aspectos técnicos, económicos y sociales como indicadores de referencia en la toma de decisiones para la elección del tipo de superficie. Haciéndose una valoración de las fortalezas y debilidades que supone este pavimento en función de la necesidad de gestión que se pretenda. Además, se analizan las características de los distintos elementos que conforman la superficie: tipo de fibras, longitud, densidad, etc. Así como algunas recomendaciones para su mantenimiento, marcaje y riego. Por último, en las conclusiones, se propone el césped artificial de última generación (arena-caucho integrado sobre el césped como una alternativa óptima para la práctica del fútbol con altos índices de calidad, que aumenta la rentabilidad económica y social, por cuanto el número de usos es mayor, y que en muchos casos también ofrece una mayor calidad técnica al ser difícil disponer de campos de césped natural en buenas condiciones.
    PALABRAS CLAVE: Césped artificial, rentabilidad social, deportiva y económica.


    In this work, we analyse the characteristics of a synthetic surface, last generation surface for soccer’s practice. Due to the new technological advances, it have been obtained a flooring that reproduces the game in a very similars conditions to the ones we have in a natural grass field. In this study we have considered techniques, economicals and socials aspects as a reference gauge at the moment of taking decisions to select the type of surface, making a valuation of the advantages and disadvantages that

  19. Comparative analysis between two systems to generate electric energy for isolated community in the interior of the Amazon state: fuel cells with natural gas reformer versus diesel generation; Analise comparativa entre dois sistemas de geracao de energia eletrica para a comunidade isolada no interior do estado do Amazonas: celula a combustivel com reformador para gas natural versus gerador diesel

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Paula Duarte; Bergamini, Cristiane Peres; Camargo, Joao Carlos; Lopes, Daniel Gabriel [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Fac. de Engenharia Mecanica; Esteves, Gheisa Roberta Telles [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Nucleo de Pesquisas e Estudos Ambientais; Silva, Ennio Peres da Silva [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Inst. de Fisica Gleb Wataghin

    2004-07-01

    Although great part of the domestic territory is already supplied with electric energy, still there are many regions where the system is precarious or nonexistent, generically called isolated communities. In the majority of the cases these communities are supplied with Diesel oil generators and the substitution of this fuel for available alternative energy in the localities has been object of study of some institutions of research spread throughout the country. Currently, the use of fuel cells has been strongly argued in the generation of electric energy associated with the local energy necessity, from the use of a regional fuel and this is due to the high efficiency of allied energy conversion to the low ambient impacts that this equipment offers. Most of the different types of fuel cells use hydrogen as a fuel to produce electricity, and it is extracted from renewable or non-renewable sources of energy. Then, the article has the objective of comparing in first analysis the energy efficiency and the cost between the two systems: the ones used currently in the great majority of the isolated communities, constituted of a Diesel engine-generator system, with Natural Gas Reformer System/ Purifier of Hydrogen/ Fuel Cell/ and to analyze if such project presents characteristics that qualifies it to get the carbon credits proposed in the Mechanism of Clean Development. (author)

  20. Entre palabra, escritura e imagen

    Directory of Open Access Journals (Sweden)

    José Sánchez Parga

    2015-01-01

    Full Text Available Plantea el autor que, hace quinientos años, cuando se produjo el encuentro entre la cultura europea y las americanas junto con la conquista y la dominación colonial se instauró un régimen de comunicación en el que se reprodujo una situación de incomunicación y transcomunicaciones hasta ahora existentes. Se refiere el autor también a la violencia verbal y la ley del silencio, a lo que se entiende por mundo andino, a la comunicación como intercambio, la tradición oral-galaxia radial, la dominación gráfica, la Biblia-Gramática- leyes de Indias, Otavalo, quema de papeles, Guamán Poma, el imperialismo de la imagen, destrucción de ídolos, imagen cristiana colonizadora, imperialismo de la imagen, resistencia cultural, importancia de la virgen y el neocolonialismo electrónico.

  1. Metabolismo oxidativo de neutrófilos em ovelhas naturalmente infectadas por nematódeos gastrintestinais e correlação entre nível sérico de cortisol e carga parasitária Neutrophils oxidative metabolism in sheep naturally infected by gastrointestinal nematodes and correlation between serum level of cortisol and parasitary burden

    Directory of Open Access Journals (Sweden)

    P.C. Ciarlini

    2002-06-01

    Full Text Available Estudaram-se as relações entre o metabolismo oxidativo dos neutrófilos, os níveis séricos de cortisol e a carga parasitária estimada pela contagem de ovos por grama de fezes (OPG no final da gestação, durante a lactação e após o desmame de ovelhas naturalmente infectadas por nematódeos gastrintestinais. Utilizaram-se 22 ovelhas da raça Suffolk, homogêneas quanto à idade (três a quatro anos, número de parições (terceira e época de parição. O cortisol sérico foi determinado por radioimunoensaio e o metabolismo oxidativo dos neutrófilos pelo teste de redução do tetrazólio nitroazul (NBT. Os maiores valores de OPG foram observados na quinta semana de lactação, e as maiores taxas de cortisol e de redução do NBT ocorreram na quarta semana pós-desmame. Verificou-se correlação positiva (r = 0,52; PThe relationships between neutrophils oxidative metabolism, cortisol serum levels and worm burden, estimated by fecal egg count (EPG, were studied in sheep naturally infected by gastrointestinal parasites at the end of pregnancy, during lactation, and after weaning. Twenty-two Suffolk sheep three to four year-old, of same parity and season of parturition were used. Serum cortisol was determined by radioimmunoassay and the neutrophils oxidative metabolism by the nitroblue tetrazolium (NBT reduction test. The highest EPG values were observed on the fifth week of lactation while the highest rates of cortisol and reduction of NBT occurred on the fourth week after weaning. A positive correlation (r = 0.52; P<0.01 was observed between the neutrophils capacity to reduce the NBT and the serum cortisol concentration in the pre-parturition period. Otherwise, the neutrophils oxidative metabolism decreased near to the parturition. A negative correlation (r = -0.39; P<0.01 between EPG and NBT reduction test was observed after weaning, which was coincident with the increase in the neutrophils capacity to reduce NBT, indicating that animals

  2. Entre contener y ser contenido

    Directory of Open Access Journals (Sweden)

    Jorge Morales Meneses

    2016-08-01

    Full Text Available El presente artículo propone una nueva manera de entender los elementos comunes en la formación y el hacer del diseño y de la arquitectura, posibilitando un pensar común y un coactuar en diversas escalas de intervención, necesarias para el manejo de la complejidad del paisaje contemporáneo. La convicción de un pensar común entre ambas disciplinas permite explorar un marco filosófico que incluye a pensadores tan trascendentales como Aristóteles, Kant y Heidegger, estableciendo un orden de pensamiento que los relaciona y sitúa. En momentos en que el territorio está siendo visible y negativamente afectado por elementos no pensados o que fueron imaginados separadamente, este artículo propone una mirada que le dé sentido de totalidad a las acciones del diseño y de la arquitectura, como elementos que permanentemente se contienen en otros de diferente escala, pero que siempre están vinculados. Reconocer el paisaje físico y mental, tangible e intangible que contiene al diseño y a la arquitectura contribuirá a establecer un marco de acción donde todos los elementos construidos por el ser humano puedan tener un rol específico y una escala asumida, e intercomprenderse para mejor utilización de los recursos, disminuir el impacto ambiental y contribuir a un orden social mejor interpretado por los objetos, espacios y sus representaciones.

  3. Entre Dawkins e Platinga: apontamentos

    OpenAIRE

    da Silva, Mauro Sérgio Santos; Garcia Xavier, Dennys

    2015-01-01

    This paper contextualizes epistemologically and establishes some differences between the materialistic naturalism of Richard Dawkins and the analytical theism of Alvin Plantinga. It presents some of the main currents in contemporary philosophy of religion, especially for Anglo-American scenary, considering this scenary relevant, present and central. Then talks about the Dawkin's idea that organized complexity has no design, their criticism to the notions of chance and intelligent design, its ...

  4. Ecologia global contra diversidade cultural? Conservação da natureza e povos indígenas no Brasil: O Monte Roraima entre Parque Nacional e terra indígena Raposa-Serra do Sol Global ecology versus cultural diversity? Conservation of nature and indigenous peoples in Brazil. Roraima Mount: National Park vs. Raposa-Serra do Sol Indigenous Land

    Directory of Open Access Journals (Sweden)

    Vincenzo Lauriola

    2003-01-01

    Full Text Available As políticas de conservação da natureza em diversos paises estão cada vez mais ligadas à tomada de decisões ecológicas globais. Exemplos destas ligações variam entre a definição de prioridades e objetivos das políticas, à ação de ONG's ambientalistas internacionais, à existência de fundos e programas globais para o meio ambiente e o desenvolvimento sustentável, até as novas oportunidades econômicas representadas pelos mercados emergentes para serviços ecológicos globais e ''commodities ambientais''. Estas políticas freqüentemente conflitam com os direitos e as necessidades de diferentes populações locais, pois a implementação de áreas protegidas que excluem o homem recebe prioridade com respeito a outros modelos de conservação e uso sustentável da biodiversidade. O Brasil não faz exceção a esta regra. Hoje as políticas de conservação da natureza estão entrando em conflito direto com as políticas de preservação do direito à diferença cultural dos povos indígenas. Isto acontece a diversos níveis e em vários contextos locais diferenciados, desde a região Atlântica até a Amazônia e o Escudo das Guianas. A existência de fundos globais e suas prioridades podem contribuir para explicar estes conflitos, pois a ligação ecológica global contribui para redefinir as relações políticas nacionais e locais. O caso do Parque Nacional do Monte Roraima na Terra Indígena Raposa-Serra do Sol ilustra como modelos de conservação baseados na exclusão do homem, concebidos e implementados de cima para baixo, acirram conflitos preexistentes, políticos e sobre o direito à terra. Abordado através de um angulo diferente, este caso também aponta um possível caminho para soluções viáveis. Conversando, andando de canoa a remo e a pé com os índios Ingarikó na Serra do Sol, è possível perceber sua própria perspectiva cultural ecológica como elemento fundamental para a preservação dos recursos naturais

  5. Patpong, entre sexe et commerce.

    Directory of Open Access Journals (Sweden)

    Sébastien Roux

    2010-03-01

    Full Text Available Le tourisme dit « sexuel » est aujourd’hui décrié comme une forme de tourisme international immoral, un dysfonctionnement grave de la mondialisation appelant une réaction politique contre « l’exploitation sexuelle » dont seraient victimes des millions de femmes et d’enfants. Pourtant, derrière l’apparente évidence du « tourisme sexuel » comme expression de sens commun, rares sont les enquêtes qui explicitent la réalité concrète des échanges prostitutionnels. En adoptant une démarche ethnographique, l’article décrit le fonctionnement de Patpong, un quartier rouge de Bangkok dédié à une clientèle internationale. Par la description des offres disponibles, des revenus générés, des codes et des pratiques, la complexité de l’espace réapparaît. Il s’agit de donner à voir la réalité des échanges pour interroger l’articulation entre commerce et sexualité. L’analyse ethnographique du tourisme sexuel permet ainsi de souligner la diversité des pratiques et de rappeler que les formes les plus visibles — et les plus commentées — d’échanges prostitutionnels éclipsent trop souvent une pluralité d’expériences qui participe pourtant au succès de ces ruelles mondialement connues. So-called sex tourism is condemned as an immoral form of international tourism, a serious failure of globalization requiring political action against the “sexual exploitation” suffered by millions of women and children. Yet behind the common and seemingly evident understanding of “sexual tourism,” few studies have focused on the actual reality of such relations. Based on an ethnographic study, this article presents the structure of Patpong, a red-light district of Bangkok dedicated to international tourism. First, the article aims to briefly present the historical development of Patpong. This peculiar space is intrinsically linked to sex tourism, as these world-renowned streets expanded since the mid-60s to

  6. Atributos do solo e biomassa radicular após quatro anos de semeadura direta de forrageiras de estação fria em campo natural dessecado com herbicidas

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    E. Pérez Gomar

    2002-03-01

    Full Text Available Os campos naturais, desenvolvidos sobre solos arenosos da região norte do Uruguai, são compostos por espécies forrageiras, sobretudo de gramíneas de produção estacional, com baixa produtividade no inverno. O objetivo deste estudo foi avaliar o efeito da dessecação do campo natural no estabelecimento de espécies de estação fria em atributos do solo e biomassa radicular. O estudo, iniciado em 1994, utilizou delineamento experimental de blocos ao acaso com parcelas subsubdivididas, com três repetições. Nas parcelas principais, em 1994, foram aplicados os tratamentos com herbicidas (paraquat 0,60gha-1i.a., glifosate 0,36gha-1i.a. e glifosate 1,44gha-1i.a. e testemunha sem herbicida em campo natural para a semeadura de pastagens de inverno. Nessas parcelas, a pastagem de inverno foi aveia preta (avena strigosa L., triticale (X Triticosecale Wittmack e azevém (Lolium multiflorum L.. As subparcelas foram formadas pela reaplicação ou não dos herbicidas em 1995 e as subsubparcelas foram formadas pela reaplicação ou não dos herbicidas em 1996. As amostras de solo para determinar a biomassa radicular, a densidade do solo, o carbono (C orgânico do solo, bases trocáveis, Al trocável e o pH do solo foram extraídas separadamente, em três subamostras, usando cilindro metálico de 7,65cm de diâmetro e 40cm de comprimento. Os monolitos extraídos foram estratificados até 30cm de profundidade nas camadas de 0-5, 5-10, 10-15, 15-20 e 20-30cm. A biomassa radicular foi maior na testemunha do que a média dos tratamentos com herbicidas somente na camada de 0-5cm, e, entre os tratamentos com herbicidas, a biomassa radicular foi maior com paraquat do que com o glifosate. A reaplicação de herbicidas, em 1995 e 1996, também ocasionou redução da biomassa radicular. Houve alta correlação positiva de C orgânico com a biomassa radicular. A redução de C orgânico para o tratamento mais agressivo de controle químico (glifosate 1,44gi

  7. Resistência à tração entre amálgama e resina composta em diferentes condições de oxidação - estudo in vitro

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    YOUSSEF Michel Nicolau

    1999-01-01

    Full Text Available Este trabalho estuda in vitro a resistência à tração de corpos-de-prova de amálgama-resina composta unidos pelo adesivo dental Scotchbond Multi-Uso Plus. Os corpos-de-prova foram divididos em três grupos de dez, sendo que cada corpo era o resultado da união de dois discos, um de amálgama e outro de resina composta. Esses discos foram obtidos dentro de cilindros de baquelite e sofreram acabamento superficial com lixa de grana 600. Pretendeu-se simular a técnica do amalcomp e verificar a resistência à tração entre o amálgama e a resina composta em diferentes condições de oxidação do amálgama. Dos resultados obtidos e mediante análise de variância e teste de Tukey a 5%, pôde-se concluir que: o Grupo 3, que ficou na saliva artificial por trinta dias e portanto sofreu maior oxidação, apresenta resistência à tração superior e estatisticamente significante em relação aos grupos 1 e 2; o Grupo 2, que ficou na saliva por sete dias e sofreu menor oxidação, não apresenta resistência à tração estatisticamente superior ao Grupo 1 de amálgama recém-condensado.

  8. Micro manometer and pitot tube for measuring the velocity distribution in a natural convection water stream between two vertical parallel plates (1961); Micromano metre et tube de pitot destines a l'exploration du profil de vitesse dans un ecoulement d'eau de convection naturelle entre deux plaques verticales paralleles (1961)

    Energy Technology Data Exchange (ETDEWEB)

    Santon, L; Vernier, Ph [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1961-07-01

    For heat transfer studies in certain cases of cooling in swimming-pool type nuclear reactors, a knowledge of the distribution of the velocities between two heating elements is of prime importance. A Pitot tube and a micro-manometer have been developed for making these measurements on an experimental model. (authors) [French] Pour l'etude du transfert de chaleur dans certains cas de refroidissement des reacteurs nucleaires du type piscine, la connaissance de la repartition des vitesses entre deux elements chauffants est primordiale. On a mis au point un tube de Pitot et un micromanometre pour effectuer ces mesures sur une maquette experimentale. (auteurs)

  9. Revisión sobre la evidencia de la relación entre exposición profesional al ruido y efectos extrauditivos no cardio-vasculares Systematic review and evidence on occupational noise exposure and extra-auditory effects of no cardiovascular nature

    OpenAIRE

    Jerónimo Maqueda Blasco; Rosana Cortés Barragán; Elena Ordaz Castillo; Angel Asúnsolo del Barco; Agustín Silva Mato; Eva Bermejo García; Maria Fe Gamo González

    2010-01-01

    Trabajo de revisión que tienen como objetivo conocer el nivel de evidencia existente sobre los efectos extra-auditivos de la exposición profesional al ruido relacionados con: alteraciones bioquímicas, efectos neuro-piscológicos, salud reproductiva y accidentes de trabajo mediante el análisis sistemático de la producción científica publicada entre 1995 y 2008. La búsqueda de las referencias bibliográficas se realizó mediante términos "Major Topic"y "MeSH" para MEDLINE y términos "Decriptors" p...

  10. Floridablanca entre la modernidad y la posmodernidad

    OpenAIRE

    Senatore, María Ximena

    2007-01-01

    Este artículo se centra en los diálogos entre el pasado y el presente creados en el marco de la modernidad y de la posmodernidad. La arqueología como práctica social puede ser entendida como un diálogo pasado-presente. Floridablanca es una historia, un sitio, una experiencia, una idea, una utopía. Es también un punto de encuentro entre modernidad y posmodernidad. El objetivo de este trabajo es presentar ciertas reflexiones sobre los diálogos pasado-presente que crean, transforman y reproducen...

  11. Responsabilidad extracontractual y contractual: barrera entre ambas

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    González Hernández, Rut

    2013-01-01

    Full Text Available La finalidad que persigue el sistema de responsabilidad civiles el resarcimiento del daño causado con independencia de que proceda la responsabilidad contractual o la extracontractual, coexistiendo ambas en nuestro ordenamiento jurídico y resultando en ocasiones complicado discernir la frontera entre una y otra.

  12. Sinergias entre Luxemburgo, ACNUR y Skype

    OpenAIRE

    Bertout, Antoine; Bourcy, Marc de; Faisal, Mohammad

    2011-01-01

    Una reciente asociación estratégica entre ACNUR, el Gobierno de Luxemburgo y el proveedor de software para comunicaciones Skype permite al personal de ACNUR en zonas de condiciones de vida difíciles mantenerse en contacto con sus familiares y amigos. Los socios evalúan de qué forma podría adaptarse la tecnología para otras organizaciones humanitarias.

  13. A desnecessidade do trabalho entre pescadores artesanais

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    Cristiano Wellington Norberto Ramalho

    2015-04-01

    Full Text Available As relações socioculturais e econômicas, entre alguns grupos de pescadores artesanais, não colocam como entes antagônicos trabalho e tempo livre. Do contrário, tais relações celebram aproximações entre saber-fazer pesqueiro, lazer e vida, formando e conformando um todo societário. Inseridos nesse quadro, estão os pescadores artesanais do mar-de-fora da praia de Suape, no município do Cabo de Santo Agostinho, litoral sul de Pernambuco, distante 50 km de Recife. Este artigo busca desvelar a mencionada moral do trabalho e do tempo livre no fazer cotidiano de pescadores dessa Praia, com base na pesquisa etnográfica e na história de vida de 13 pescadores. No geral, identificou-se que há uma moral do trabalho que se confunde à moral do tempo livre, pois o cerceamento de uma delas representa limites à outra. Assim, para esses homens, definir o que é um ser liberto ou cativo liga-se ao encontro indissociável, em termos práticos e simbólicos, entre as referidas morais, o que é essencial para classificar o fazer-se pescador artesanal em seu sentido pleno fundamentado na desnecessidade do trabalho.

  14. Para tener entre manos una revista

    OpenAIRE

    Gabriel Giannone

    2017-01-01

    Consideramos importante rescatar el trabajo colectivo y acumulado que precede y sucede a la labor de intermediación académica que realiza una revista. Para ello recordamos una clásica frase prologal: el texto que usted tiene en sus manos. Con cierta ironía, porque quizás muy pocos de los lectores puedan tener entre manos y oler el papel impreso de Chasqui. Desde sus pantallas, sus tablets o sus teléfonos la intención es que se comprenda este número como un solo cuerpo. Y al mismo tiempo, como...

  15. Revisión sobre la evidencia de la relación entre exposición profesional al ruido y efectos extrauditivos no cardio-vasculares Systematic review and evidence on occupational noise exposure and extra-auditory effects of no cardiovascular nature

    Directory of Open Access Journals (Sweden)

    Jerónimo Maqueda Blasco

    2010-03-01

    Full Text Available Trabajo de revisión que tienen como objetivo conocer el nivel de evidencia existente sobre los efectos extra-auditivos de la exposición profesional al ruido relacionados con: alteraciones bioquímicas, efectos neuro-piscológicos, salud reproductiva y accidentes de trabajo mediante el análisis sistemático de la producción científica publicada entre 1995 y 2008. La búsqueda de las referencias bibliográficas se realizó mediante términos "Major Topic"y "MeSH" para MEDLINE y términos "Decriptors" para OSH update. Se recuperaron un total de 370 referencias y se incluyeron en la revisión todos los estudios experimentales, estudios de cohortes y estudios casos control y aquellos estudios trasversales que cumplieron al menos con cinco de los nueve criterios que la declaración STROBE establece para los estudios observacionales. Fueron seleccionados para su revisión a texto completo un total de 35 artículos: 14 estudios experimentales, 2 estudios de cohortes, 6 estudios casos control, 12 estudios transversales y 1 estudio de validación. La asignación del nivel de evidencia se realizó de acuerdo a los criterios SIGN. La selección y revisión de los artículos se realizó mediante revisión por pares, los casos de discrepancia entre pares se resolvió mediante consenso. Encontramos un alto nivel de evidencia (1+ para influencia de la exposición profesional al ruido sobre el incremento de la secreción de cortisol y noradrenalina, fatiga y disminución del rendimiento, funciones cognitivas y memoria, disminución en la calidad del sueño, estrés e irritabilidad y percepción de malestar. Con un nivel de evidencia 2++ se relacionó la exposición profesional al ruido con la accidentalidad laboral. No encontramos unos resultados concluyentes para la determinación de la relación entre exposición profesional al ruido sobre la salud reproductiva. Existe una diversidad en los métodos utilizados para la evaluación de la exposici

  16. Entre la Venadita y la Medusa

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    Valcárcel, Amelia

    2008-06-01

    Full Text Available Feminism has made in the last decades relevant advances towards equity between men and women in western societies. However, both mysogyny and gynophobia are still at work, giving as a result a «deflation of expectations» among women who enter the worlds of politics, information, corporations, economic power, knowledge, religion or art, and find a glass ceiling in full operation. The paper focuses on women artists, examines the anger expressed in feminist art as an answer to exclusion, and argues for feminist strategies of analysis and correction of inequalities.

    El feminismo ha conseguido en los últimos años importantes avances hacia la igualdad entre hombres y mujeres en las sociedades occidentales. Y, sin embargo, tanto la misoginia como la ginofobia siguen vigentes, provocando una «deflación de expectativas » entre las mujeres que se incorporan a los mundos de la política, la información, las organizaciones empresariales, el poder económico, el saber, la religión o la creatividad, y se topan con el techo de cristal a pleno funcionamiento. El artículo se centra en las mujeres creadoras para examinar la cólera expresada en el arte feminista como respuesta a la exclusión y defender estrategias feministas de análisis y corrección de desigualdades.

  17. Diferencias en comportamientos prosociales entre adolescentes colombianos

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    Jesús Redondo Pacheco

    2015-07-01

    Full Text Available Actualmente, se evidencia la influencia de variables socio-ambientales, como la cultura, el sexo, la edad o la nacionalidad, en la adquisición, desarrollo y mantenimiento de las conductas prosociales. El objetivo de este estudio fue analizar las diferencias en conductas prosociales entre estudiantes de educación secundaria de las ciudades de Pasto y Bucaramanga (Colombia, a quienes se administró la escala de Conducta Prosocial del TeenageInventory of Social Skills (TISS.Participaron 2.694 estudiantes con edades comprendidas entre 11 y 17 años (1878 de Pasto y 816 de Bucaramanga. De acuerdo con los resultados,los adolescentes de la ciudad de Pasto presentaron niveles significativamente más altos de conducta prosocial que los adolescentes de Bucaramanga. Este patrón de resultados fue similar por género y edad. Abstract This paper focuses on the analysis of pro-social behavior in high school students from Pasto and Bucaramanga (Colombia. 2,694 students between 11 and 17 years old (1878 from Pasto y 816 from Bucaramanga were sampled and a Pro-social Behavior Scale of Teenage Inventory of Social Skills (TISS was administered. As a result, this research shows teenagers from Pasto showed higher levels of pro-social behavior than those from Bucaramanga. Socio-environmental variables, such as culture, sex, age or nationality influence students´ pro-social behavior development and maintenance.

  18. Natural gas

    Energy Technology Data Exchange (ETDEWEB)

    Fraser, J W

    1967-08-01

    This report on the natural gas industry of Canada includes: composition and uses of natural gas, production statistics, exploration and development, reserve estimates, natural gas processing, transportation, and marketing. For the Canadian natural gas industry, 1966 was a year of moderate expansion in all phases, with a strong demand continuing for sulfur and liquid hydrocarbons produced as by-products of gas processing. Value of natural gas production increased to $199 million and ranked sixth in terms of value of mineral ouput in Canada. Currently, natural gas provides over 70% of Canada's energy requirements. Proved remaining marketable reserves are estimated to be in excess of a 29-yr supply.

  19. Natural Gas

    OpenAIRE

    Bakar, Wan Azelee Wan Abu; Ali, Rusmidah

    2010-01-01

    Natural gas fuel is a green fuel and becoming very demanding because it is environmental safe and clean. Furthermore, this fuel emits lower levels of potentially harmful by-products into the atmosphere. Most of the explored crude natural gas is of sour gas and yet, very viable and cost effective technology is still need to be developed. Above all, methanation technology is considered a future potential treatment method for converting the sour natural gas to sweet natural gas.

  20. FLUJO DE GENES ENTRE FRIJOL COMÚN Y SILVESTRE EN COSTA RICA

    Directory of Open Access Journals (Sweden)

    N\\u00E9stor Chaves-Barrantes

    2009-01-01

    Full Text Available Con el objetivo de analizar el flujo de genes entre frijol común silvestre y cultivado, se determinó el porcentaje de alogamia en condiciones naturales de crecimie nto del frijol silvestre y en estación experimental. En el 2004 se evaluó el cruzamie nto natural entre frijol silvestre mexicano G23511A (Phaseolus vulgaris L. y la línea blanca PAN 68, en la Estación Experimental Fabio Baudrit de la Universidad de Costa Ri ca en Alajuela. Para ello se sembraron dos parcelas experimentales; cada una constó de dos bloques de PAN 68 de 10 surcos (15 m de largo y espacia dos 0,6 m. Entre los bloques y en el borde superior de los mismos, se sembraron tres surcos de frijol silvestre como donantes de polen. Se numeraron las hileras y las plantas de cada una en los bloques de frijol blanco. En Quircot de Ca rtago (área donde crece en forma natural P. vulgaris silvestre, en el 2005 y 2006, se sembraron plantas de frijol comercia l (Vainica de Palo a lo largo de seis sitios junto a las poblaciones de frijol silvestre. En ambas localidades la floración de silvestres y comerciales fue coincidente. Se cosechó toda la semilla de los ensayos y se germinó en bandejas, determinando el porcentaje de alogamia por medio del color morado del hip ocotilo, indicativo de aquellas plántulas cruzadas. En Alajuela el porcentaje de cruza varió entre 0,007 y 0,028 %; mie ntras que en Quircot, entre 0 y 0,199 %.

  1. La resistenza, entre memoria y revisionismo

    Directory of Open Access Journals (Sweden)

    Massimiliano Vellini

    2013-07-01

    Full Text Available La Resistenza es sin duda un momento clave de la historia italiana del siglo XX. Pero, a pesar de haber sido narrada en muchas obras tanto literarias como en ensayos, aún hay detalles e historias que quizás no sean conocidas por el público no especializado. Además, sobre todo en los últimos años, ha habido cada vez un mayor número de obras de periodistas o historiadores que han dado del movimiento una visión bastante alejada de la tradicionalmente dominante. En este artículo queremos dar una idea de estos episodios menos conocidos de la Resistenza partigiana y de la diatriba entre diferentes visiones de la misma.

  2. Para tener entre manos una revista

    Directory of Open Access Journals (Sweden)

    Gabriel Giannone

    2017-12-01

    Full Text Available Consideramos importante rescatar el trabajo colectivo y acumulado que precede y sucede a la labor de intermediación académica que realiza una revista. Para ello recordamos una clásica frase prologal: el texto que usted tiene en sus manos. Con cierta ironía, porque quizás muy pocos de los lectores puedan tener entre manos y oler el papel impreso de Chasqui. Desde sus pantallas, sus tablets o sus teléfonos la intención es que se comprenda este número como un solo cuerpo. Y al mismo tiempo, como un esfuerzo colectivo. Alrededor de él están las propuestas, lecturas y análisis de cientos de autores, revisores externos y lectores.

  3. Las relaciones compositivas entre cine y arquitectura

    Directory of Open Access Journals (Sweden)

    Luis Villareal Ugarte

    2011-07-01

    Full Text Available El presente texto presenta la cinematografía y, en particular, sus técnicas de creación (construcción como un referente para la proyección de la obra arquitectónica. Se hace una lectura sobre las posibilidades que surgen en el encuentro entre estas dos disciplinas, siempre desde una perspectiva del proyecto arquitectónico, es decir, desde su concepción-composición. El texto se construyó a partir de las técnicas propias del lenguaje cinematográfico, más relacionadas con la proyección espacial arquitectónica, para ir encontrando paralelos entre ambas expresiones artísticas. Con esta intención, se ha echado mano de bibliografía que, desde una perspectiva compositiva, ayude a comprender las posibilidades que representa esta relación. Igualmente, el texto hace referencia a reconocidas obras arquitectónicas que por su misma composición (y experiencia son muestra de esta actitud creadora. Estas obras ayudan a demostrar la propuesta del autor, y el texto trata de ser una invitación para releer su arquitectura desde otra perspectiva que pueda dar pie para la creación de nuevas obras arquitectónicas. Más que expositiva, la intención principal del texto es propositiva para el lector-compositor de los nuevos espacios.

  4. Bullying: comportamento agressivo entre estudantes Bullying: aggressive behavior among students

    Directory of Open Access Journals (Sweden)

    Aramis A Lopes Neto

    2005-11-01

    Full Text Available OBJETIVO: Alertar os pediatras sobre a alta prevalência da prática de bullying entre estudantes, conscientizando-os da importância de sua atuação na prevenção, diagnóstico e tratamento dos possíveis danos à saúde e ao desenvolvimento de crianças e adolescentes, além da necessidade em orientar as famílias e a sociedade para o enfrentamento da forma mais freqüente de violência juvenil. FONTE DE DADOS: Foram acessados bancos de dados bibliográficos e páginas de relevância na Internet, identificando-se artigos e textos recentes sobre o tema. SÍNTESE DOS DADOS: O comportamento agressivo entre estudantes é um problema universal, tradicionalmente admitido como natural e freqüentemente ignorado ou não valorizado pelos adultos. Estudos realizados nas 2 últimas décadas demonstraram que a sua prática pode ter conseqüências negativas imediatas e tardias para todas as crianças e adolescentes direta ou indiretamente envolvidos. A adoção de programas preventivos continuados em escolas de educação infantil e de ensino fundamental tem demonstrado ser uma das medidas mais efetivas na prevenção do consumo de álcool e drogas e na redução da violência social. CONCLUSÃO: A prevenção do bullying entre estudantes constitui-se em uma necessária medida de saúde pública, capaz de possibilitar o pleno desenvolvimento de crianças e adolescentes, habilitando-os a uma convivência social sadia e segura.OBJECTIVE: To warn pediatricians about the high prevalence of bullying among students, to raise their awareness about the importance of their action in the prevention, diagnosis, and treatment of possible damage to children's health and development, and about the necessity to instruct families and society on how to face the most frequent form of youth violence. SOURCE OF DATA: Bibliographic databases and relevant Internet sites were searched for recent articles and texts about the theme. SUMMARY OF THE FINDINGS: Aggressive behavior

  5. PLURALIZING NATURE

    DEFF Research Database (Denmark)

    Clemmensen, Thomas Juel

    2014-01-01

    Denmark is widely recognised for its democratic approach to planning and the idea of planning for the common good. This interest in the common good and common values seems also to be reflected in the way which nature restoration is planned and managed – one common nature directed by the public...... authorities. But nature restoration is far from being a neural undertaking. Just like any other type of heritage production it can be the source of dissonance – ‘our’ nature is not necessary ‘their’ nature. Often this dissonance is managed in ways, which are not particular sensitive to site......-specificity. As exemplified by the Skjern River Restoration Project (1999-2003), one interpretation of the landscape sometimes suppresses other valid interpretations neglecting its diverse history. However, evidence from Switzerland suggests that planning for the common good, in the case of nature restoration, does...

  6. Natural Philosophy

    OpenAIRE

    Blair, Ann M.

    2006-01-01

    Natural philosophy” is often used by European historians as an umbrella term to designate the study of nature before it can easily be identified with what we call “science” today, to avoid the modern and potentially anachronistic connotations of that term. But “natural philosophy” (and its equivalents in different languages) was also an actor's category, a term commonly used throughout the early modern period and typically defined quite broadly as the study of natural bodies. As the central ...

  7. Dissonant Nature

    DEFF Research Database (Denmark)

    Clemmensen, Thomas Juel

    2013-01-01

    Nature restoration is far from being a neural undertaking. Just like any other type of heritage production it can be the source of dissonance – ‘our’ nature is not necessary ‘their’ nature. Often this dissonance is managed in ways, which are not particular sensitive to site-specificity. As exempl...... and allows for multiple interpretations to coexist. Evidence can be found in the Re-naturalization of River Aire (2002-2015), a restoration project, which reveals approaches that could be labelled landscape architecture specific....

  8. Temporal naturalism

    Science.gov (United States)

    Smolin, Lee

    2015-11-01

    Two people may claim both to be naturalists, but have divergent conceptions of basic elements of the natural world which lead them to mean different things when they talk about laws of nature, or states, or the role of mathematics in physics. These disagreements do not much affect the ordinary practice of science which is about small subsystems of the universe, described or explained against a background, idealized to be fixed. But these issues become crucial when we consider including the whole universe within our system, for then there is no fixed background to reference observables to. I argue here that the key issue responsible for divergent versions of naturalism and divergent approaches to cosmology is the conception of time. One version, which I call temporal naturalism, holds that time, in the sense of the succession of present moments, is real, and that laws of nature evolve in that time. This is contrasted with timeless naturalism, which holds that laws are immutable and the present moment and its passage are illusions. I argue that temporal naturalism is empirically more adequate than the alternatives, because it offers testable explanations for puzzles its rivals cannot address, and is likely a better basis for solving major puzzles that presently face cosmology and physics. This essay also addresses the problem of qualia and experience within naturalism and argues that only temporal naturalism can make a place for qualia as intrinsic qualities of matter.

  9. ARTESANATO: ENTRE PATRIMÔNIO E MERCADO

    Directory of Open Access Journals (Sweden)

    Miriel Bilhalva Herrmann

    2016-12-01

    Full Text Available O presente trabalho busca estabelecer uma analise em relação a questão do artesanato, de como sofre modificações e interferências . Na qual no seu inicio tinha apenas valor utilitário, pois era produzido para suprir necessidades humanas. E com a revolução industrial foi relegada a marginalização, assim perdeu seu espaço para as máquinas. Mas logo com o intuito de criar identidades nacionais, começam as discussões em relação ao patrimônio. Dessa forma as concepções e ampliação sobre o seu conceito, propiciou grande valorização das diversidades culturais, assim como as técnicas artesanais. E a partir disso o artesanato passa a ser percebido como patrimônio, sendo visto e utilizado pelo turismo como fator de desenvolvimento econômico, dessa forma ocasionando um dilema entre estas técnicas artesanais de como se manter tradicionais, referência para a cultura e a identidade cultural. Ao mesmo tempo atender as necessidades do consumidor que se apresenta como turista, pois necessitam se adaptar para continuar sobrevivendo as mudanças do mercado

  10. Entre la Historia y el Cine

    Directory of Open Access Journals (Sweden)

    Luisa Fernanda Acosta

    1995-01-01

    Full Text Available Este trabajo se propone aplicar al cine el concepto de «fuente histórica». El uso de medios de comunicación como el cine está íntimamente relacionado con las necesidades y posibilidades de una sociedad, lo que implica una relación muy cercana entre el desarrollo social y económico de una comunidad, y los mecanismos que ella genera como canales de expresión y comunicación. El cine, conjugación de imagen, sonido y movimiento se convierte para la sociedades contemporáneas en una gran alternativa como fuente histórica, que provee al investigador ópticas diferentes de una realidad ya explorada. Un gesto, una mirada, un plano, una secuencia, se traducen en frases y párrafos, que generan una versión diferente de la historia, una redacción que se lee en imágenes y que narra otro punto de vista, un relato oculto que tiene todo por contar.

  11. Acidentes de trabalho ocorridos entre adolescentes

    Directory of Open Access Journals (Sweden)

    Aline Alcântara Pimenta

    2013-01-01

    Full Text Available Este estudio tuvo como objetivo identificar los accidentes de trabajo producidos entre los adolescentes en una fundación de educación para el trabajo. Estudio descriptivo, cuantitativo que investigó 117 adolescentes trabajadores a través de un cuestionario multidimensional. De los encuestados, el 72,6% eran mujeres, el 80,3% tenían 15 años, el 60% eran pardos y el 62,4% no trabajaba anteriormente. Las actividades más populares realizadas fueron las siguientes: Recepcionista (46,2% y auxiliar administrativo (37,6%. Sufrieron accidentes en el trabajo o antes de llegar a este el 11% de los encuestados, de los cuales 76,9% eran típicos y se produjeron en la tarde (61,5%. Las piernas y los pies fueron los miembros mas heridos (46,2%, seguido por abrasiones y lesiones graves (30,8%. El trabajo de niños y adolescentes pueden presentar agravios, que se clasifican como accidentes. El enfrentamiento de este problema no puede ser pensado sólo en términos de vigilancia de los lugares de trabajo y de las políticas dirigidas a la salud del trabajador; hay una necesidad de una mayor transformación en la estructura de la sociedad, de modo que el trabajo perjudique la salud.

  12. Transferencia de conocimiento entre comunidades científicas

    Directory of Open Access Journals (Sweden)

    Echeverría Ezponda, Javier

    2008-06-01

    Full Text Available Several epistemic innovations (Knowledge’s advances may be considered to be a result of processes of knowledge transfer among different scientific scientific communities. In addition to generate knowledge in their different specialization’s fields, scientists use knowledge produced in diverse scientific fields. By reinterpreting von Hippel’s (2005 proposals, we analyze different sources of epistemic innovation and apply that model to concrete examples; suppliers (ISI, distributors (Nature, Science and transdisciplinary users of the scientific knowledge. We conclude that transfer’ processes can generate innovation if they are produced between knowledge’ networks with different innovation’s nodes. This kind of proposals can be applied to different types of knowledge (science, technology, arts, culture and even so to knowledge’s transmission to society.Algunas innovaciones epistémicas (avances del conocimiento pueden ser analizadas como resultado de procesos de transferencia de conocimiento entre diferentes comunidades científicas. Los científicos no sólo producen conocimiento en su ámbito de especialización, además son usuarios del conocimiento que otros han producido en campos distintos. Reinterpretando las propuestas de von Hippel (2005, se analizan otras fuentes de innovación epistémica, mencionando ejemplos concretos: los suministradores (ISI, distribuidores (Nature, Science y el uso transdisciplinario del conocimiento científico. Se concluye que los procesos de transferencia que pueden generar innovaciones se producen en redes de conocimiento con diferentes nodos de innovación. Estas propuestas pueden aplicarse a otras modalidades de conocimiento (ciencia, tecnología, arte, cultura, e incluso a la transmisión del conocimiento a la sociedad.

  13. Matematica Natural.

    Science.gov (United States)

    Lozano, Patricia; Medearis, Linda

    Matematica Natural (Natural Mathematics) is a mathematics curriculum for young children based on the assumption that they learn mathematics through concrete, real life, relevant experiences and that educational differences rather than cultural differences influence math achievement. The curriculum uses hands-on materials and activities to teach…

  14. Natural radiation

    International Nuclear Information System (INIS)

    Feliciano, Vanusa Maria Delage

    2016-01-01

    Cosmic radiation, as well as cosmogenic radiation, terrestrial radiation, radon and thorium are introduced in this chapter 3. The distribution of natural radiation sources is treated, where the percentage distribution of the contribution relative to exposure to radiation from natural and artificial sources is also included

  15. Framing nature

    NARCIS (Netherlands)

    Jansen, Peter

    2017-01-01

    This PhD thesis is about communication concerning nature in the Netherlands. The purpose of this exploratory study is to take both a theoretical and an empirical look at whether (implicit) religious elements play a role in this communication about nature in the Netherlands.

    In this PhD

  16. Natur formet

    DEFF Research Database (Denmark)

    Søberg, Martin

    2011-01-01

    Anmeldelse af Malene Hauxner, "Fra naturlig natur til SUPERNATUR – Europæisk landskabsarkitektur 1967-2007 set fra Danmark", Risskov: Ikaros Press, 2011.......Anmeldelse af Malene Hauxner, "Fra naturlig natur til SUPERNATUR – Europæisk landskabsarkitektur 1967-2007 set fra Danmark", Risskov: Ikaros Press, 2011....

  17. Figuratividade: o complexo elo entre as palavras e as coisas

    Directory of Open Access Journals (Sweden)

    Ada Lima Ferreira de Sousa

    2016-01-01

    Full Text Available Este artigo trata do conceito de figuratividade no âmbito dos estudos cognitivos da linguagem. Apresenta a polarização, herdada dos gregos antigos, entre o que se convencionou como figurativo e literal, o que resultou no entendimento de que pensamento e linguagem são inerentemente literais. Nessa concepção, o figurativo seria um recurso não natural, propositadamente utilizado como estratégia estilística. Assim, o uso da figuratividade passou a ser associado a prejuízos à suposta transparência da linguagem e dos significados a ela inerentes. Embora essa concepção não tenha sido suplantada, as perspectivas cognitivas contemporâneas que tratam do fenômeno linguístico como sendo intrínseco à cognição oferecem-nos uma outra visão acerca da figuratividade. A Teoria Neural da Linguagem, em particular, tem reforçado, teórica e empiricamente, a compreensão acerca dos mecanismos cognitivos envolvidos na construção de sentidos. De igual relevância, esse arcabouço teórico tem apresentado evidências de que as experiências corpóreas estão na raiz da construção de parte das estruturas mentais evidenciadas no uso da linguagem, de modo que a natureza peculiar de nosso corpo contribui para as peculiaridades de nosso sistema conceptual. A integração entre corpo e mente, de modo que emoções e abstrações devem ser conceptualizadas a partir de elementos mais concretos, de base corpórea, oferece novos contornos à explicação para o fenômeno linguístico da figuratividade. Palavras-chave: Figuratividade. Cognição. Teoria Neural da Linguagem.

  18. Max Weber entre liberalismo y republicanismo

    Directory of Open Access Journals (Sweden)

    Villacañas Berlanga, José Luis

    2005-12-01

    Full Text Available This article attempts to analyze the differences between social democracy and political democracy as modern processes, as these were understood by Max Weber. The archetype of modernity resides, from this point of view, in a convergence of both processes, as occurred in countries like the USA and Great Britain. Weber's diagnosis is that, whereas social democracy can be organized around liberal arguments, political democracy cannot advance without republican concepts like those of virtue, rigour, responsability and representation. For Weber, these values could only become present in Germany thanks to an adequate and democratic reception of Nietzsche, and in some way this reception could make sense of the former's work.

    Este artículo pretende analizar las diferencias entre democracia social y democracia política como procesos modernos, tal y como fueron comprendidos por Max Weber. Lo arquetípico de la modernidad reside, desde este punto de vista, en una convergencia de ambos procesos, tal y como se dio en países como USA y Gran Bretaña. El diagnóstico de Weber es que, mientras la democracia social puede organizarse sobre argumentos liberales, la democracia política no puede avanzar sin conceptos republicanos como el de virtud, rigor, responsabilidad y representación. Para Weber, estos valores sólo podrían hacerse presentes en Alemania a partir de una recepción adecuada y democrática de Nietzsche y en cierto modo esta recepción daría sentido a su obra.

  19. La sociologie clinique entre psychanalyse et socioanalyse

    Directory of Open Access Journals (Sweden)

    Vincent de Gaulejac

    2008-04-01

    Full Text Available L'introduction de la démarche clinique en sociologie conduit à réinterroger les différences et les complémentarités entre la psychanalyse et la sociologie sur trois points : leur façon d'appréhender la question de l'inconscient; le poids respectif des déterminations psychiques et sociales, le travail qu'un sujet peut effectuer sur son histoire pour en modifier le cours. Ces questions ont été l'objet de nombreux débats. Le présent article met en perspective les positions de Sigmund Freud et de Pierre Bourdieu. L'un et l'autre incarnent et défendent des points de vue théoriques qui articulent une théorie de l'homme en société étayée sur une pratique de changement. Confrontation intéressante dans la mesure où les postulats de départ de ces deux auteurs sont très éloignés. Sigmund Freud cherche la clé explicative des comportements humains du côté du registre intra psychique, alors que Pierre Bourdieu la pose du côté de l'intériorisation des structures sociales. Pourtant à partir de prémisses différents ils se rejoignent sur bien des points. Ces convergences permettent de s'appuyer sur leurs approches pour définir les contours d'une méthodologie qui s'inspire tout à la fois de la psychanalyse et de la socioanalyse.Clinical sociology between psychoanalysis and socioanalysisThe introduction of the clinical approach in sociology lead us to reconsider the differencies and complementarities between psychoanalysis and sociology on three aspects: their way of taking into account the unconscious; the relative weight of social and psychic predeterminations; the work that can be done by somebody on his/her own history in order to modify its course. Those questions have been largely debated. The purpose of this article is to compare on those topics the positions of Sigmund Freud and Pierre Bourdieu. Both develop theories which include a conception of man in society supported by a change practice. The interest of this

  20. Natural radiation; A radiacao natural

    Energy Technology Data Exchange (ETDEWEB)

    Feliciano, Vanusa Maria Delage

    2016-07-01

    Cosmic radiation, as well as cosmogenic radiation, terrestrial radiation, radon and thorium are introduced in this chapter 3. The distribution of natural radiation sources is treated, where the percentage distribution of the contribution relative to exposure to radiation from natural and artificial sources is also included.

  1. Natural Communities

    Data.gov (United States)

    Kansas Data Access and Support Center — This dataset shows the locations of known tracts of high quality natural communities in Kansas, generalized to the PLSS section. It is not a compehensive dataset of...

  2. Sciences & Nature

    African Journals Online (AJOL)

    AFRICAN JOURNALS ONLINE (AJOL) · Journals · Advanced Search · USING AJOL ... Sciences & Nature, the Scientific Journal edited by the University of ... Subjects covered include agronomy, sciences of the earth, environment, biological, ...

  3. Pluralising Nature

    DEFF Research Database (Denmark)

    Clemmensen, Thomas Juel

    2017-01-01

    suppress other valid perceptions, in conflict with the need for different groups of people to be able to identify with the same territory. However, planning for the common good, in the case of nature restoration, does not necessarily mean planning for one common nature. Understanding and working......Denmark is recognised for its democratic approach to planning, and for the idea of planning for the common good. This interest in the common good and in common values also seems to be reflected in the way that the restoration of nature is planned and managed, suggesting that there is one common...... “nature” that everyone can agree on. But nature restoration is far from being an unproblematic undertaking. As with any other type of heritage production, it can be the source of dissonance. As exemplified by the Skjern River Restoration Project, one perception of a landscape and its value as “nature” can...

  4. Writing Nature

    Directory of Open Access Journals (Sweden)

    Kristin Asdal

    2014-06-01

    Full Text Available This special issue of the Nordic Journal of Science and Technology Studies is interested in how nature, in different versions and forms, is invited into our studies, analyses, and stories. How is it that we “write nature”? How is it that we provide space for, and actually describe the actors, agents, or surroundings, in our stories and analyses? The articles in the issue each deal with different understandings of both the practices of writing and the introduction of various natures into these. In this introduction to the issue the editors engage with actor-network theory as a material semiotic resource for writing nature. We propose to foreground actor-network theory as a writing tool, at the expense of actor-network theory as a distinct vocabulary. In doing this and pointing out the semiotic origins to material-semiotics we also want to problematize a clear-cut material approach to writing nature.

  5. Natural aphrodisiacs.

    Science.gov (United States)

    Shamloul, Rany

    2010-01-01

    The search for a remedy or a prescription that can enhance sexual function and/or treat male erectile dysfunction has been an obsession throughout known history. Whether it was an Eastern civilization or a Western one, religious or atheist, man's aspiration for a better or best "manhood" has been a history-time goal. This review will discuss the current research done on the most popular natural aphrodisiacs and examine the weight of evidence to support or discourage the use of any of these substances to enhance sexual desire and/or function. Review of the current evidence on the use of natural substances as aphrodisiacs. Efficacy of natural aphrodisiacs in enhancing sexual function in men and women. There is little evidence from literature to recommend the usage of natural aphrodisiacs for the enhancement of sexual desire and/or performance. Data on yohimbine's efficacy does not support the wide use of the drug, which has only mild effects in the treatment of psychogenic ED. Although there's a positive trend towards recommending ginseng as an effective aphrodisiac, however, more in depth studies involving large number of subjects and its mechanism of action are needed before definite conclusions could be reached. Data on the use of natural aphrodisiacs in women is limited. The current body of objective evidence does not support the use of any natural aphrodisiac as an effective treatment for male or female sexual dysfunctions. Potent men and men with ED will continue the search for natural aphrodisiacs despite the current disappointing data on their effectiveness. Care should be taken regarding the fraud addition of sildenafil analogues to natural aphrodisiacs.

  6. Cinética de vulcanização de composições de borracha natural com incorporação de cinza de casca de arroz Vulcanization kinetics of natural rubber filled with rice husk ash

    Directory of Open Access Journals (Sweden)

    Helson M. da Costa

    2003-06-01

    Full Text Available Cinza da casca de arroz foi incorporada em borracha natural (NR utilizando-se um misturador de cilindros. O sistema de vulcanização convencional (CV foi escolhido e os estudos sobre a cura das composições foram conduzidos em um Curômetro TI-100. As curvas de torque foram obtidas em 150, 160, 170 e 180 °C. A velocidade global e a energia de ativação aparente para o processo de vulcanização foram calculadas para cada composição, assumindo que a vulcanização segue uma cinética de primeira ordem. Para fins de comparação, duas cargas comerciais, sílica precipitada (Zeosil-175 e negro de fumo (N762, foram também usadas. Foi observado que a adição da cinza da casca de arroz às composições de NR, em comparação às outras cargas utilizadas, aumentou a velocidade de reticulação e diminuiu a energia de ativação aparente de modo mais marcante.Rice husk ash was incorporated into natural rubber (NR using a laboratory size two-roll mill. A conventional vulcanization system (CV was chosen and cure studies were carried out on a TI-100 Curometer. The torque curves were obtained at 150, 160, 170, and 180 °C. The overall rate and the apparent activation energy for the vulcanization process were calculated for each compound assuming that vulcanization follows first-order kinetics. For the purpose of comparison, two commercial fillers, precipitated silica (Zeosil-175 and carbon black (N762, were also used. In comparison to the other fillers used, the addition of rice husk ash to NR compounds increased the crosslinking rate and lowered the apparent activation energy in a more marked way.

  7. natural or artificial diets

    Directory of Open Access Journals (Sweden)

    A. O. Meyer-Willerer

    2005-01-01

    Full Text Available Se probaron alimentos artificiales y naturales con larva de camarón (Litopenaeus vannamei cultivados en diferentes recipientes. Estos fueron ocho frascos cónicos con 15L, ocho acuarios con 50L y como grupo control, seis tanques de fibra de vidrio con 1500L; todos con agua marina fresca y filtrada. La densidad inicial en todos los recipientes fue de 70 nauplios/L. Aquellos en frascos y acuarios recibieron ya sea dieta natural o artificial. El grupo control fue cultivado con dieta natural en los tanques grandes que utilizan los laboratorios para la producción masiva de postlarvas. El principal producto de excreción de larva de camarón es el ión amonio, que es tóxico cuando está presente en concentraciones elevadas. Se determinó diariamente con el método colorimétrico del indofenol. Los resultados muestran diferencias en la concentración del ión amonio y en la sobrevivencia de larvas entre las diferentes dietas y también entre los diferentes recipientes. En aquellos con volúmenes pequeños comparados con los grandes, se presentó mayor concentración de amonio (500 a 750µg/L, en aquellos con dietas naturales, debido a que este ión sirve de fertilizante a las algas adicionadas, necesitando efectuar recambios diarios de agua posteriores al noveno día de cultivo para mantener este ión a una concentración subletal. Se obtuvo una baja cosecha de postlarvas (menor a 15% con el alimento artificial larvario, debido a la presencia de protozoarios, alimentándose con el producto comercial precipitado en el fondo de los frascos o acuarios. Los acuarios con larvas alimentadas con dieta natural también mostraron concentraciones subletales de amonio al noveno día; sin embargo, la sobrevivencia fue cuatro veces mayor que con dietas artificiales. Los tanques control con dietas naturales presentaron tasas de sobrevivencia (70 ± 5% similares a la reportada por otros laboratorios.

  8. USO DE TABACO ENTRE ADOLESCENTES: REVISÃO DE LITERATURA

    OpenAIRE

    Amanda Márcia dos Santos Reinaldo; Camila Cesar Goecking; Jennifer Perucci de Almeida; Yasmin Narciso Goulart

    2010-01-01

    Revisión sistemática de la literatura sobre el uso de tabaco entre adolescentes. La utilización del tabaco entre adolescentes, en general, puede estar asociada al éxito, a la necesidad de aceptación, a cuestiones familiares, entre otros factores que incentivan de cierta forma a su uso. Las políticas de salud para el área trabajan para prevenir y reducir el consumo, alertando en relación al riesgo al que tal población se expone cuando utiliza tabaco. Conocer el perfil de los adolescentes que u...

  9. La photographie industrielle entre image documentaire et image publicitaire

    Directory of Open Access Journals (Sweden)

    Régis Huguenin

    2009-12-01

    Full Text Available La chocolaterie Suchard à Neuchâtel (Suisse réalise des photographies de natures très diverses qu’elle diffuse dans des cercles plus ou moins restreints. En 1967, elle inaugure un entrepôt automatique, point d’orgue d’une restructuration quasi complète de la production et dont des clichés réalisés avant et pendant les journées « portes ouvertes » témoignent. En nous intéressant aux documents iconographiques relatant l’inauguration d’un bâtiment industriel chez Suchard, nous montrons comment l’image produit une réalité qu’elle n’incarne pas automatiquement. On montre ou on cache, on accentue ou on atténue en fonction des objectifs recherchés. C’est le cas aussi des légendes qui accompagnent les clichés, toutes axées sur la rationalisation mais n’évoquant jamais les conséquences sociales de la nouvelle stratégie productive. L’oscillation entre document et publicité est en prise directe avec le temps : celui du travail du photographe, celui de la sélection par l’entreprise, celui de la perception par les employés ou par le public, le temps du classement et de l’oubli avant celui de l’exhumation et de la réutilisation  des documents par l’entreprise pour une commémoration.

  10. Emancipating Nature

    DEFF Research Database (Denmark)

    Munk, Anders Kristian

    2012-01-01

    The issue of riverine flooding in the UK is closely tied up with computer simulations. Arguably, these modelling practices are ripe with the anticipation of nature. They aspire to pre-empt it, hence expect it to be ‘out there’, and ultimately work through formalized distillations of it – hydrodyn......The issue of riverine flooding in the UK is closely tied up with computer simulations. Arguably, these modelling practices are ripe with the anticipation of nature. They aspire to pre-empt it, hence expect it to be ‘out there’, and ultimately work through formalized distillations...... of it – hydrodynamic equations – which have their own anticipations and place their own demands on their modellers. Through the experience of a flood modelling apprenticeship I argue that the taking-place of such anticipations paradoxically relies on the birth of a hybrid, the model-modeller, and thus on a nature...

  11. Natural aerodynamics

    CERN Document Server

    Scorer, R S

    1958-01-01

    Natural Aerodynamics focuses on the mathematics of any problem in air motion.This book discusses the general form of the law of fluid motion, relationship between pressure and wind, production of vortex filaments, and conduction of vorticity by viscosity. The flow at moderate Reynolds numbers, turbulence in a stably stratified fluid, natural exploitation of atmospheric thermals, and plumes in turbulent crosswinds are also elaborated. This text likewise considers the waves produced by thermals, transformation of thin layer clouds, method of small perturbations, and dangers of extra-polation.Thi

  12. Provincialising Nature

    DEFF Research Database (Denmark)

    Provincialising Nature: Multidisciplinary Approaches to the Politics of the Environment in Latin America offers a timely analysis of some of the crucial challenges, contradictions and promises within current environmental discourses and practices in the region. This book shows both challenging...... scenarios and original perspectives that have emerged in Latin America in relation to the globally urgent issues of climate change and the environmental crisis. Two interconnected analytical frameworks guide the discussions in the book: the relationship between nature, knowledge and identity and their role...

  13. Reconnecter l’humain et la nature

    OpenAIRE

    Brunelle, Charles-Mathieu

    2013-01-01

    Qu’est-ce qui n’a pas été fait pour la nature ? À partir de cette interrogation en forme de constat, les responsables de l’Espace pour la vie – qui rassemble les institutions muséales des sciences de la Nature de Montréal et la Grande Place qui les relie – multiplient les initiatives pour rétablir le contact entre l’homme et la nature et impliquer davantage les citoyens dans la protection de la biodiversité.

  14. Periurbanisation and natural hazards

    Directory of Open Access Journals (Sweden)

    Delphine Loison

    2009-03-01

    Full Text Available In mountainous areas in recent decades urbanisation has expanded to areas where low ground adjoins mountainsides that are unstable in a number of respects. Periurbanisation in mountain basins with unstable sides poses specific problems that local players have to address. The Lavanchon basin (southeast of Grenoble, which is subject to very rapid urban growth combined with particularly dynamic mountainsides, is representative of the way activity is being brought into closer contact with potential hazards. A diachronic study of changes in land use between 1956 and 2001 shows how valley infrastructures at the bottom of mountainsides have become increasingly dense. In this context, a survey was carried out among a number of residents in the Lavanchon basin in an attempt to evaluate the degree of awareness that the population has of the natural hazards to which it is exposed. The results show that slightly more than half of the population surveyed was aware of the problem of natural hazards being present in the area, with most inhabitants being more concerned about industrial and pollution hazards. New residents were unaware of or were unwilling to accept the reality of hazards. The low incidence of significant natural events, the effectiveness of the protective structures built, the absence of information provided by the public authorities and the division of the basin between several management bodies appear to have engendered a feeling of safety from natural phenomena. The geographical distribution of appreciation of the hazard clearly shows a distinction between those inhabitants living on the low ground and those at the bottom of the mountainsides, and this corresponds fairly closely with the historical and current location of the main potentially hazardous events that have occurred.Dans les territoires de montagne, les dernières décennies ont vu l’expansion de l’urbanisation vers les zones de contact entre la plaine et les versants, lieux

  15. Nature Watch

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 1; Issue 3. Nature Watch Diversity of Bats. G Marimuthu. Feature Article Volume 1 Issue 3 March 1996 pp 103-110. Fulltext. Click here to view fulltext PDF. Permanent link: https://www.ias.ac.in/article/fulltext/reso/001/03/0103-0110. Author Affiliations.

  16. Nature's Palette

    Science.gov (United States)

    McBride, Brooke B.; Brewer, Carol A.

    2010-01-01

    Flower petals, acorn hats, exoskeletons of beetles, and lichens are just a few of the objects students may find in a surprising array of vivid colors. These tiny examples from nature's palette can be discovered in a school yard, a park, or even along the edges of a paved sidewalk...it simply takes careful observation! This article describes a…

  17. Nature Watch

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 9; Issue 9. Nature Watch - Coral Reefs and their Fauna: An Underwater Fantasyland. Anuradha Bhat. Feature Article Volume 9 Issue 9 September 2004 pp 62-73. Fulltext. Click here to view fulltext PDF. Permanent link:

  18. Nature Watch

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 3. Nature Watch: Symbiosis in Coastal Marine Communities. Neelam Pereira. Feature Article Volume 20 Issue 3 March 2015 pp 245-253. Fulltext. Click here to view fulltext PDF. Permanent link:

  19. Nature Watch

    Indian Academy of Sciences (India)

    ... Lecture Workshops · Refresher Courses · Symposia · Live Streaming. Home; Journals; Resonance – Journal of Science Education; Volume 3; Issue 5. Nature Watch - Thinking Like a Tahr: When Males and Females go their Separate Ways. M D Madhusudan. Feature Article Volume 3 Issue 5 May 1998 pp 43-47 ...

  20. Natural Propositions

    DEFF Research Database (Denmark)

    Stjernfelt, Frederik

    Preface -- Introduction -- The generality of signs -- Dicisigns -- Some consequences of the dicisign doctrine -- Dicisigns and cognition -- Natural propositions--the evolution of semiotic self-control -- Dicisigns beyond language -- Operational and optimal iconicity in Peirce's diagrammatology...... -- Cows, red cows, and red herrings -- Corollarial and theorematic experiments with diagrams -- Strategies of research: Peirce's enlightenment maxims -- Perspective -- References -- Index....

  1. Nature Watch

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 6; Issue 7. Nature Watch - Singapore's Jurong BirdPark: A Study Model. Abraham Verghese. Feature Article Volume 6 Issue 7 July 2001 pp 74-88. Fulltext. Click here to view fulltext PDF. Permanent link:

  2. Kritikkens natur

    DEFF Research Database (Denmark)

    Schatz-Jakobsen, Claus

    1999-01-01

    Artiklen introducerer det nye forskningsfelt inden for samtænkning af litteratur, kultur og natur, den såkaldt økologiske kritik, og kaster et kritisk blik på  dens brug af romantisk litteratur som proto-økologisk kanon....

  3. Nature Watch

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 4; Issue 7. Nature Watch - The Odyssey of the Olive Ridley. Kartik Shanker. Feature Article Volume 4 Issue 7 July 1999 pp 68-78. Fulltext. Click here to view fulltext PDF. Permanent link: https://www.ias.ac.in/article/fulltext/reso/004/07/0068-0078 ...

  4. Nature Watch

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 1; Issue 8. Nature Watch - Secrets of the Shieldtails. Kartik Shanker. Feature Article Volume 1 Issue 8 August 1996 pp 64-70. Fulltext. Click here to view fulltext PDF. Permanent link: https://www.ias.ac.in/article/fulltext/reso/001/08/0064-0070 ...

  5. Nature Watch

    Indian Academy of Sciences (India)

    2016-08-26

    Aug 26, 2016 ... ... 20; Issue 1. Nature Watch: A Tale of Two Turtles. V Deepak. Feature Article Volume 20 Issue 1 January 2015 pp 47-54. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/020/01/0047-0054. Keywords. Ecology; endemic; India; turtles; tortoises; Western Ghats.

  6. Diversidad de anfibios anuros del Parque Nacional El Palmar (Provincia de Entre Ríos, Argentina

    Directory of Open Access Journals (Sweden)

    Guzmán, Atilio

    2012-02-01

    Full Text Available El Parque Nacional El Palmar (PNEP es una importante área protegida de la zona este de la provincia de Entre Ríos, Argentina, creado para conservar uno de los últimos fragmentos de palmera yatay (Butia yatay. En este estudio se examina la biodiversidad de la comunidad de anfibios anuros que habitan tres tipos de ambientes del Parque; el pajonal, el pastizal y la selva en galería. Los muestreos se llevaron a cabo entre los meses de primavera-verano de 2008 y 2009. En total se registraron 16 especies de anfibios para el PNEP, distribuidas en 6 familias y 9 géneros. Entre los tipos de ambientes, el pajonal exhibió la mayor diversidad y riqueza de especies. Las abundancias relativas de las especies fueron equitativas dentro de los tres ambientes y existieron diferencias significativas en la composición de especies entre los mismos, siendo el pajonal y el pastizal los más similares. Este trabajo es un aporte significativo al conocimiento de la herpetofauna del PNEP y una base para estudios futuros sobre historia natural de los anfibios. Así también brinda una herramienta para el manejo y conservación del área protegida. El Palmar National Park (NPEP is an important protected area in the eastern of Entre Rios Province, Argentina. It was created for preserving one of the last fragments of yatay palm (Butia yatay. This study examines the biodiversity of the community of anurans that inhabit three types of environments of the Park, the grassland, the straw zone and the gallery forest. Sampling was conducted between the spring-summer 2008 and 2009. There were found 16 species of amphibians for NPEP, belonging to 6 families and 9 genera. Among the types of environments, the straw zone showed the highest diversity and species richness. The relative abundances of the species were equitative in all three environments and there were significant differences in species composition among them being the grassland and pasture the most similar. This work

  7. Provincialising Nature

    DEFF Research Database (Denmark)

    Provincialising Nature: Multidisciplinary Approaches to the Politics of the Environment in Latin America offers a timely analysis of some of the crucial challenges, contradictions and promises within current environmental discourses and practices in the region. This book shows both challenging...... scenarios and original perspectives that have emerged in Latin America in relation to the globally urgent issues of climate change and the environmental crisis. Two interconnected analytical frameworks guide the discussions in the book: the relationship between nature, knowledge and identity and their role...... in understanding recent and current practices of climate change and environmental policy. The different chapters in this volume contribute to this debate by offering multidisciplinary perspectives on particular aspects of these two frameworks and through a multidirectional outlook that links the local, national...

  8. Unbounded Naturalism

    Directory of Open Access Journals (Sweden)

    Andrew Taggart

    2008-10-01

    Full Text Available nbsp;font face="Times, serif"font size="3"In the Anglo-American reception of John McDowellrsquo;s /font/fontfont face="Times, serif"font size="3"emMind and World/em/font/fontfont face="Times, serif"font size="3", there has been little attention paid to the developmental aspect of his lsquo;partially re-enchantedrsquo; naturalism. In lsquo;Naturalism Unboundedrsquo;, I argue that McDowellrsquo;s story of our normal upbringing (/font/fontfont face="Times, serif"font size="3"emBildung/em/font/fontfont face="Times, serif"font size="3" presents problems for his claim that we have a lsquo;standing obligationrsquo; to reflect on our perceptual experiences. I follow this critique up with a Hegelian-inspired attempt to retain and revise the vital points he makes about experience./font/font

  9. Natural games

    International Nuclear Information System (INIS)

    Anttila, Jani; Annila, Arto

    2011-01-01

    A course of a game is formulated as a physical process that will consume free energy in the least time. Accordingly, the rate of entropy increase is the payoff function that will subsume all forms of free energy that motivate diverse decisions. Also other concepts of game theory are related to their profound physical counterparts. When the physical portrayal of behavior is mathematically analyzed, the course of a game is found to be inherently unpredictable because each move affects motives in the future. Despite the non-holonomic character of the natural process, the objective of consuming free energy in the least time will direct an extensive-form game toward a Lyapunov-stable point that satisfies the minimax theorem. -- Highlights: → Behavior in the context of game theory is described as a natural process. → The rate of entropy increase, derived from statistical physics of open systems, is identified as the payoff function. → Entropy as the payoff function also clarifies motives of collaboration and subjective nature of decision making. → Evolutionary equation of motion that accounts for the course of a game is inherently unpredictable.

  10. Campesinos entre la selva, invasores de reservas

    Directory of Open Access Journals (Sweden)

    Daniel Ruiz Serna

    2003-01-01

    Full Text Available Cuando en 1992 la Conferencia de las Naciones Unidas sobre el Medio Ambiente y Desarrollo realizó la Cumbre para la Tierra en Río de Janeiro, los países del mundo entero pactaron la protección de la biodiversidad como estrategia fundamental para frenar la acelerada desaparición de especies biológicas, hábitats y ecosistemas del planeta. A partir de las principales políticas ambientales que en esta materia ha adelantado el Estado colombiano, abordaré la forma en que dichas políticas se cristalizan en una región particular: el Parque Nacional Natural de La Macarena en Colombia. El énfasis estará puesto en la forma en que los distintos actores presentes en la zona (campesinos, guerrilla, ONG y Estado construyen, desde sus propias perspectivas, una intrincada red de significaciones sobre las causas y consecuencias que tiene el hecho de encontrarse en una reserva declarada Patrimonio Biológico de la Humanidad en 1933. Pese a que estos actores poseen interpretaciones e intereses disímiles, veremos cómo en sus discursos existe una coincidencia en cuanto los fines perseguidos (mejoramiento en la calidad de vida, desarrollo, productividad, etc., aunque sea el arreglo a medios su principal controversia.

  11. Compatibilidad sexual entre dos tipos de Hylocerus (Cactaceae

    Directory of Open Access Journals (Sweden)

    Roberta Castillo M

    2003-09-01

    Full Text Available Dos de los tipos de pitahaya mas cultivados en la Península de Yucatán, México, difieren principalmente por el color de su cáscara, el primero es de color rojo (Uqroo1, perteneciente a Hylocereus undatus, mientras que en el segundo es color amarillo claro (Uqroo2, hasta el momento también identificado como H. undatus; este último es mas dulce. En ambos tipos de pitahayas, se realizaron autopolinizaciones y polinizaciones cruzadas directas y recíprocas, con el propósito de evaluar el efecto en la cantidad de frutos que lograron su desarrollo. Se midieron algunas variables para detectar la influencia del progenitor paterno en algunas características del fruto. Los testigos se obtuvieron de flores polinizadas libremente. El diseño experimental utilizado fue completamente al azar, con 15 repeticiones por tratamiento. Se encontró que Uqroo1 es autocompatible, mientras que Uqroo2 es autoincompatible. Los testigos de ambos tipos alcanzaron el mismo peso, y los frutos de Uqroo2 logrados por polinización cruzada tuvieron un peso similar al de los testigos o fueron significativamente mas pesados. Algunas variables resultaron positivamente correlacionados; el coeficiente entre el número de semillas y el peso total del fruto fue de r = 0.84. La correlación mas alta (r = 0.97 resultó entre el peso total y el peso de la pulpa. En los frutos obtenidos por polinización cruzada prevalecieron las características del progenitor materno. Se recomienda cultivar la Pitahaya blanca con otro tipo de pitahaya, además de Uqroo1There are two types of pitahaya that are cultivated in Yucatan Peninsula of Mexico. They differ mainly in the skin color of the fruit, one of them has a red skin (Uqroo1, while the other has a light yellow skin (Uqroo2 both belong to Hylocereus undatus (Haworth Britt. & Rose. The yellow skin pitahaya is the sweetest. The studies were conducted using the methods of self pollination and cross pollination, with direct crosses and

  12. ANÁLISIS DEL COMERCIO DE GAS ENTRE COLOMBIA Y VENEZUELA

    Directory of Open Access Journals (Sweden)

    SEBASTIÁN OSORIO RUIZ

    2011-01-01

    Full Text Available En este trabajo se analizan las oportunidades de intercambio de gas natural de Colombia con otros mercados regionales. Para dicho análisis, se propone un modelo del mercado de gas natural en Colombia, el cual incluye la oferta, la demanda, y las restricciones de transporte, así como las importaciones y exportaciones. El modelo se basa en la representación del comportamiento de los productores y su efecto en el mercado. Ya en este mercado la oferta es un oligopolio y el modelo es un modelo de equilibrio espacial con competencia a la Cournot. Los fl ujos resultantes del modelo indican que el impacto inicial de las exportaciones a Venezuela sobre el mercado Colombiano es bajo, y que las importaciones desde Venezuela mejoran la seguridad del suministro de gas al mercado y aumentan la competencia entre los productores.

  13. Hobbes Y Kant: De La Guerra Entre Los Individuos A La Guerra Entre Los Estados

    Directory of Open Access Journals (Sweden)

    Adelino Braz

    2003-10-01

    Full Text Available The article takes the Kantian criticism to the political thought of Hobbes. It explains in the first place the logic of the desire of power in Hobbes and how this conducts to a state of war, or state of nature, that only can be finish under the threat of a sovereign, that receives from all the members of a community the right to defend them from others. Subsequently it explains the critics done by Kant to the hobbesian formulation of the state of nature, where it is assumed that just the establishment of the civil state, is sufficient to end to the state of war.

  14. A FOTOGRAFIA ENTRE A ARTE POPULAR E A ARTE ERUDITA

    Directory of Open Access Journals (Sweden)

    Marcos Fabris

    2013-09-01

    Full Text Available Este artigo pretende discutir alguns dos aspectos que marcam o estabelecimento e a dissolução das fronteiras entre dois pólos convencionalmente descritos como arte culta e arte popular, tecendo paralelos entre o teatro de variedades, forma de expressão popular por excelência, e a fotografia, expressão artística que desde seus primórdios circula entre os dois extremos deste contínuo. Nestes termos, ambiciona-se verificar como determinadas condições sócio-históricas favorecem a criação de recursos formais que minimizam, ou suprimem, tais distinções consagradas pela crítica de arte.

  15. Determinantes de la precarización laboral en Argentina entre 2003-2013: entre los cambios y las continuidades

    Directory of Open Access Journals (Sweden)

    Marcelo Delfini

    2016-03-01

    Full Text Available El crecimiento económico experimentado por Argentina desde 2003 ha tenido su correlato en la mejora de los indicadores laborales. No obstante, la precarización laboral se ha mantenido, luego de una baja importante hasta el año 2007, en valores muy elevados. Partiendo de la idea central que la precarización constituye para el capital, una reducción de costos, el objetivo de este artículo es dar cuenta de los determinantes de la informalidad entre los trabajadores asalariados, estableciendo continuidades y cambios entre los años 2003 y 2013. Para ello utilizamos una metodología cuantitativa con fuentes secundarias de información, a partir de las cuales realizamos dos tipo de análisis, el primero de carácter descriptivo a partir del cual se busca dar cuenta de las características del mercado de trabajo argentino entre 1990 y 2013 y el segundo se realiza por medio de una regresión logística binomial, que permite acercarnos a los determinantes de la precarización de las condiciones de trabajo. En este sentido, se pudo observar que entre los años 2003 y 2013, se consolidó una precarización laboral, cuyos determinantes no lograron modificarse sustancialmente entre los años de referencia.

  16. Natural games

    Science.gov (United States)

    Anttila, Jani; Annila, Arto

    2011-10-01

    A course of a game is formulated as a physical process that will consume free energy in the least time. Accordingly, the rate of entropy increase is the payoff function that will subsume all forms of free energy that motivate diverse decisions. Also other concepts of game theory are related to their profound physical counterparts. When the physical portrayal of behavior is mathematically analyzed, the course of a game is found to be inherently unpredictable because each move affects motives in the future. Despite the non-holonomic character of the natural process, the objective of consuming free energy in the least time will direct an extensive-form game toward a Lyapunov-stable point that satisfies the minimax theorem.

  17. Natural uranium

    International Nuclear Information System (INIS)

    Ammerich, Marc; Frot, Patricia; Gambini, Denis-Jean; Gauron, Christine; Moureaux, Patrick; Herbelet, Gilbert; Lahaye, Thierry; Pihet, Pascal; Rannou, Alain

    2014-08-01

    This sheet belongs to a collection which relates to the use of radionuclides essentially in unsealed sources. Its goal is to gather on a single document the most relevant information as well as the best prevention practices to be implemented. These sheets are made for the persons in charge of radiation protection: users, radioprotection-skill persons, labor physicians. Each sheet treats of: 1 - the radio-physical and biological properties; 2 - the main uses; 3 - the dosimetric parameters; 4 - the measurement; 5 - the protection means; 6 - the areas delimitation and monitoring; 7 - the personnel classification, training and monitoring; 8 - the effluents and wastes; 9 - the authorization and declaration administrative procedures; 10 - the transport; and 11 - the right conduct to adopt in case of incident or accident. This sheet deals specifically with natural uranium

  18. Risco nutricional entre gestantes adolescentes Riesgo nutricional entre gestantes adolescentes Nutritional risks among pregnant teenagers

    Directory of Open Access Journals (Sweden)

    Glayriann Oliveira Belarmino

    2009-01-01

    Full Text Available OBJETIVOS: Identificar o acometimento de risco nutricional em gestantes adolescentes; averiguar hábitos alimentares; e verificar percepções destes quanto à importância de nutrição adequada na gravidez. MÉTODOS: Estudo de campo realizado no Centro de Desenvolvimento Familiar, em Fortaleza-CE, com 40 gestantes adolescentes. A avaliação nutricional foi efetuada com o auxílio do "Gráfico de acompanhamento nutricional da gestante" e os hábitos alimentares foram conferidos pela "Técnica de alimentação diária habitual". RESULTADOS: Vinte (50% adolescentes apresentaram peso adequado, 11(27,5% baixo peso e 9 (22,5% sobrepeso. Prevaleceram massas, carnes, gorduras, doces e baixo consumo de frutas e verduras; 33 (82,5% tinham a percepção de que a alimentação deve ser "diferente" na gravidez e 28 (70% afirmaram ter feito mudanças nos hábitos alimentares no pré-natal. CONCLUSÃO: O acometimento de risco nutricional entre adolescentes gestantes se revelou em situações de sobrepeso, baixo peso, dietas pouco diversificadas e desinformação.OBJETIVOS: Identificar el riesgo nutricional en gestantes adolescentes; averiguar hábitos alimenticios; y verificar percepciones de éstos en cuanto a la importancia de una nutrición adecuada en el embarazo. MÉTODO: Se trata de un estudio de campo realizado en el Centro de Desarrollo Familiar, en Fortaleza-CE, con 40 gestantes adolescentes. La evaluación nutricional se llevó a cabo con el auxilio del "Gráfico de acompañamiento nutricional de la gestante" y los hábitos alimenticios fueron conferidos por la "Técnica de alimentación diaria habitual". RESULTADOS: Veinte (50% adolescentes presentaron peso adecuado, 11(27,5% bajo peso y 9 (22,5% sobre peso. Prevalecieron pastas, carnes, grasas, dulces y bajo consumo de frutas y verduras; 33 (82,5% tenían la percepción de que la alimentación debe ser "diferente" durante el embarazo y 28 (70% afirmaron haber realizado cambios en los h

  19. Next nature : nature changes along with us

    NARCIS (Netherlands)

    Mensvoort, van K.M.; Grievink, H.J.

    2011-01-01

    We debate saving nature, we dream about escaping to nature, but rarely do we ask "What is nature?". The Next Nature book radically shifts your notion of nature. Where technology and nature are traditionally seen as opposed, they now appear to merge or even trade places. With our urge to design our

  20. Natural isotopes

    International Nuclear Information System (INIS)

    Vogel, J.C.

    1986-01-01

    14 C dates between 600 and 900 AD were obtained for early Iron Age sites in Natal, and from 1300 to 1450 AD for rock engraving sites in Bushmanland. Palaeoenvironmental data derived from the dating of samples related to sedimentary and geomorphic features in the central and northern Namib Desert enabled the production of a tentative graph for the changes in humidity in the region over the past 40000 years. These results suggest that relatively humid conditions came to an end in the Namib at ±25000 BP (before present). The increased precision of the SIRA mass spectrometer enabled the remeasurement of 13 C and 18 O in the Cango stalagmite. This data confirmed that the environmental temperatures in the Southern Cape remained constant to within ±1 o C during the past 5500 years. Techniques and applications for environmental isotopes in hydrology were developed to determine the origin and movement of ground water. Isotopic fractionation effects in light elements in nature were investigated. The 15 N/ 14 N ratio in bones of animals and humans increases in proportion to the aridity of the environment. This suggests that 15 N in bone from dated archaeological sites could be used to detect changes in past climatic conditions as naturally formed nitrate minerals are higly soluble and are only preserved in special, very dry environments. The sources and sinks of CO 2 on the South African subcontinent were also determined. The 13 C/ 12 C ratios of air CO 2 obtained suggest that the vegetation provides the major proportion of respired CO 2 . 9 refs., 1 fig

  1. Relaciones entre los salarios y la productividad en Colombia

    OpenAIRE

    Méndez Sayago, Jhon Alexander

    2017-01-01

    Esta tesis de doctorado está compuesta de cuatro artículos que tienen como propósito estudiar las relaciones entre los salarios y la productividad laboral en Colombia. Los dos primeros artículos denominados “Salario real y eficiencia del trabajo en el sector manufacturero en Colombia” y “Análisis de causalidad y sensibilidad entre los salarios reales y la productividad laboral en el sector manufacturero a partir de cifras de los departamentos en Colombia” aportan evidencia empírica sobre la d...

  2. Arquitectura de comunicación entre frameworks jadesymfony

    OpenAIRE

    RODRÍGUEZ C., PAOLA J.; GÓMEZ R., SANTIAGO

    2009-01-01

    La inclusión del uso de Agentes dentro del campo del desarrollo de software es una de las principales áreas de estudio en la actualidad. Específicamente, el desarrollo de aplicaciones Web que aprovechen las ventajas que ofrece la tecnología de agentes y en especial las distintas propuestas de comunicación entre frameworks son esfuerzos importantes dentro de este campo. En este sentido, este artículo describe una arquitectura de comunicación entre dos de los principales frameworks de desarroll...

  3. Entre ritmo e poesia: rap e literatura oral urbana

    Directory of Open Access Journals (Sweden)

    Marcus Rogerio Salgado

    2015-11-01

    Full Text Available O objetivo do presente artigo é um estudo do rap enquanto manifestação de literatura oral urbana e forma de oralidade tecnológica. Para tanto, o artigo passará em revista as relações entre literatura e palavra falada/cantada, assim como as possibilidades de interface estética entre a literatura e a música que estão em questão quando tratamos do rap.

  4. Factores de riesgo que condicionan la conducta machista entre adolescentes.

    OpenAIRE

    Sánchez Alonso, Isabel

    2016-01-01

    Este trabajo sobre los factores de riesgo que condicionan la violencia machista entre adolescentes, recoge las principales argumentaciones que explican el origen de la desigualdad entre hombres y mujeres y de cómo la diferencia biológica ha incidido en la división del trabajo según el sexo y en las funciones y roles que debe desempeñar cada uno. A continuación señala los principales factores de riesgo que condicionan la violencia machista en las primeras relaciones am...

  5. Encuentros improbables: Cervantes y Shakespeare entre Borges y Burgess

    OpenAIRE

    Martínez, Zenón Luis

    2016-01-01

    En sus biografías sobre Cervantes y Shakespeare, Luis Astrana Marín especuló con un encuentro entre ambos con ocasión de la ratificación en 1605 en Valladolid del Tratado de Londres. Este improbable encuentro ha seguido alimentando ficciones históricas y fantasías literarias. El cruce de caminos entre Cervantes y Shakespeare tiene lugar en torno a la perdida tragicomedia The History of Cardenio (1612?), atribuida a John Fletcher y William Shakespeare. La recon...

  6. Entre Madres: Talleres de Comunicación

    OpenAIRE

    Cardoso Moreno, María Jesús; Aragonés, Lucía Tomás

    2015-01-01

    En el presente artículo se expone el trabajo de investigación cuyo objetivo fue conocer el grado de satisfacción de las madres con un taller de formación denominado "Entremadres". Las 150 mujeres madres que participaron en el taller en la ciudad de Zaragoza, España, se conformaron en un grupo de 7 u 8 madres y estuvo compuesto por seis sesiones de dos horas cada una, entre los años 2008 y 2013. Este taller fue dirigido a madres con hijos de edades comprendidas entre 2 y 16 años. La frecuencia...

  7. La discapacidad entre poblaciones refugiadas y afectadas por conflictos

    OpenAIRE

    Reilly, Rachael

    2010-01-01

    La Comisión de Mujeres Refugiadas lanzó en el año 2007 un importante proyecto de investigación para evaluar la situación de las personas con discapacidad entre las poblaciones desplazadas o afectadas por conflictos.

  8. Des tubercules pour la mort: analyses préliminaires des relations entre l'ordre naturel et l'ordre culturel dans l'iconographie Mochica

    Directory of Open Access Journals (Sweden)

    1990-01-01

    Full Text Available Le but de cet article est de démontrer que c’est à partir de savantes observations du milieu naturel que les Mochicas ont puisé leur inspiration pour former leur iconographie. Il y aurait donc une corrélation entre les représentations de plantes ou d’animaux et leurs propriétés et comportements naturels. Nous explorons ici les relations entre les représentations de tubercules, d’humains, de certains animaux, et le monde mortuaire. LOS TUBÉRCULOS Y LA MUERTE. Análisis preliminares de las relaciones entre el orden natural y el orden cultural en la iconografía mochica. Se demuestra en este artículo que, para plasmar su iconografía, los Mochicas se inspiraron de sabias observaciones del medio natural. Entonces había un vínculo entre las representaciones de plantas y animales, sus propiedades y comportamientos naturales. Se indica aquí las relaciones entre las representaciones de tubérculos, de humanos, de ciertos animales, y el mundo mortuorio. TUBERS AND DEATH. Preliminary Analysis of the Relations Between the Natural and Cultural Order in Mochica Iconography. The objective of this article is to demonstrate that the Mochicas have designed their iconography system by studying closely their natural environment. Hence, there is a correlation between the natural comportments of the animals or the properties of the plants and their representations in the iconography. We explore the relation between the representations of tubers, human and animals beings, and the mortuary world.

  9. Nature and nature values in organic agriculture

    DEFF Research Database (Denmark)

    Hansen, Lene; Noe, Egon; Højring, Katrine

    2006-01-01

    The relationship between agriculture and nature is a centra issue in the current agricultural debate. Organic farming has ambitions and a special potential in relation to nature. Consideration for nature is part of the guiding principals of organic farming and many organic farmers are committed...... to protecting natural qualities. However, the issue of nature, landscape, and land use is not straightforward. Nature is an ambiguous concept that involves multiple interests and actors reaching far beyond farmers. The Danish research project ......

  10. Les relations entre attentes, valeur, buts, engagement cognitif et engagement comportemental dans un MOOC

    Directory of Open Access Journals (Sweden)

    Bruno Poellhuber

    2016-01-01

    Full Text Available Dans le présent article, nous nous intéressons aux relations entre attentes, valeur, buts et engagement dans un MOOC universitaire de l’initiative Edulib. À partir d’une perspective théorique globale fondée sur l’autorégulation et en utilisant un modèle de motivation sociocognitif des attentes et de la valeur (Pintrich, 2003, nous analysons les liens entre motivation et engagement. Pour ce faire, nous utilisons les données de 531 répondants à un questionnaire distribué aux participants d’un MOOC de l’initiative Edulib (HEC Montréal portant sur l’introduction au marketing, offert à l’automne 2014. Une analyse par correspondances multiples sur les activités rapportées nous a permis de concevoir un score composite d’engagement comportemental. Par la suite, nous utilisons une approche d’équations structurelles pour tester le modèle théorique, après avoir opérationnalisé tous les liens anticipés entre les différentes variables. Nos résultats suggèrent un modèle acceptable qui confirme plusieurs des prévisions théoriques. Ainsi, la valeur est liée aussi bien aux buts extrinsèques qu’aux buts intrinsèques, mais les buts intrinsèques sont beaucoup plus fortement liés à l’engagement cognitif que les buts extrinsèques. Toutefois, aucune relation significative n’est observée entre l’engagement cognitif et l’engagement comportemental, ce qui soulève des questions de mesure, mais aussi des questions de nature théorique pour une clientèle d’adultes participant à un MOOC.

  11. RELAÇÕES ENTRE ENSINO E APRENDIZAGEM NA EJA

    Directory of Open Access Journals (Sweden)

    José Moisés Nunes da Silva

    2010-01-01

    Full Text Available Este artigo tem por objetivo apresentar uma distinção clara e objetiva entre os processos de ensinar e aprender. Nessa perspectiva, primeiramente destaca a educação no contexto e como parte integrante dos processos de transformações do mundo contemporâneo. Em seguida, sustentado por diversos autores, discute-se a distinção entre ensinar e aprender. Espera-se contribuir para uma reflexão sobre a prática pedagógica docente e da necessidade de melhoria do processo de ensino e aprendizagem a fim de possibilitar uma educação em consonância com a concepção de formação integral do cidadão, à medida que tal distinção seja introjetada pelos professores. PALAVRAS-CHAVE: Ensinar. Aprender. Aprendizagem do jovem e do adulto.

  12. Afetividade entre professor e aluno no processo ensino-aprendizagem

    Directory of Open Access Journals (Sweden)

    Jéssica Simone Galdino Schaefer

    2015-06-01

    Full Text Available Este artigo tem como objetivo analisar as relações de afetividade entre professor e aluno no processo ensino-aprendizagem. Utiliza de metodologia com abordagem qualitativa, observação participante, e entrevistas semi-estruturadas. O lócus da pesquisa foi a Escola Municipal de Educação Básica Lizamara Aparecida Oliva de Almeida em Sinop, entre Fevereiro e Maio de 2014. Enquanto sujeitos, contou-se com professores e alunos do 3º ano do Ensino Fundamental. Dos resultados parciais, verificou-se que mesmo que a afetividade e a aprendizagem sejam reconhecidas teoricamente por Henri Wallon como elos fundamentais para o processo ensino-aprendizagem, ainda não é bem compreendido pelos sujeitos professores. Palavras-chave: psicologia educacional; afetividade; professores e alunos. 

  13. Relações entre geografia e natureza

    Directory of Open Access Journals (Sweden)

    Jérome FOURNIER

    2001-12-01

    Full Text Available Este artigo aborda as relações entre geografia e natureza a partir dos seguintes tópicos: A geografia - uma ciência dos lugares e dos homens? Como definir a geografia física? A biogeografia e as relações com as disciplinas conexas. As contribuições da teoria da ecologia da paisagem. A paisagem deve ser estudada a partir de uma perspectiva sistêmica - geosistêmica, portanto interdisciplinar.

  14. Entre el erotismo y la pornografía

    Directory of Open Access Journals (Sweden)

    Edmundo Ribadeneira

    2015-01-01

    Full Text Available ¿Dónde termina el erotismo y comienza la pornografía? ¿Cuál el lugar de la obscenidad? Son algunas de las inquietudes que el autor aborda al tratar sobre estas tres expresiones de la sexualidad humana, que se ubican entre la indecencia más crasa y la imaginación artística, bastante atravesadas por la obscenidad de la política y el mercantilismo

  15. Association entre les hormones sexuelles, les marqueurs de ...

    African Journals Online (AJOL)

    Introduction: Le présent travail se propose d'étudier la relation entre les hormones sexuelles, notamment l'oestradiol et l'indice de l'oestradiol libre, le sulfate de déhydroépiandrosterone et la sex hormone binding globulin, les marqueurs de remodelage osseux et la densité minérale osseuse chez une population de ...

  16. Factores socioculturales y consumo de drogas entre estudiantes universitarios costarricenses

    Directory of Open Access Journals (Sweden)

    Jaime Alonso Caravaca Morera

    2015-01-01

    Full Text Available Investigación cuantitativa de tipo descriptiva-exploratoria, con diseño transversal que examinó el efecto moderador de ciertos factores socio-culturales en el consumo de drogas entre estudiantes universitarios en San José, Costa Rica. La muestra fue conformada por 126 mujeres y 124 hombres de una universidad pública de forma no probabilística. Fue elaborado un cuestionario con cinco escalas ya validadas, que interrogaba sobre la influencia del grupo de pares, las relaciones familiares, el entretenimiento, la espiritualidad y el consumo de drogas. Se utilizó el programa SPSS versión 18 para el análisis estadístico. Se estableció que el 98,4% de los estudiantes reportaron tener por lo menos un amigo que consumía drogas, las drogas más consumidas fueron alcohol, tabaco y marihuana. Se estableció asociación significativa entre algunos factores académicos y culturales con el consumo de drogas legales e ilegales. Se concluye que deben ser implementadas estrategias preventivas considerando la influencia de los factores culturales entre los estudiantes universitarios.

  17. Diálogo entre el islamismo y occidente

    Directory of Open Access Journals (Sweden)

    Ana María MARTÍN GÓMEZ

    2011-05-01

    Full Text Available Este artículo analiza uno de los fenómenos más actuales de nuestras sociedades pluralistas y multiculturales: el encuentro entre la civilización occidental y la islámica. La elaboración de esta nota crítica se ha llevado a cabo tras la lectura de tres libros fundamentales acerca de esta temática: Un paseo por el laberinto. Sobre política y religión en el diálogo entre civilizaciones, de José María García Gómez-Heras, Laicismo, agnosticismo y fundamentalismo de Antonio García-Santesmases, y El islamismo contra el Islam. Las claves para entender el terrorismo yihadista, de Gustavo de Arístegui. A partir de estos tres ensayos, se ha emprendido un estudio filosófico de la situación actual entre el islamismo y Occidente.

  18. Proyectos educativos: estudio comparativo entre Venezuela y Colombia

    Directory of Open Access Journals (Sweden)

    Mineira Finol

    2005-09-01

    Full Text Available El Proyecto Educativo Integral Comunitario (PEIC y el Proyecto Educativo Institucional constituyen la categoría de comparación entre Venezuela y Colombia; a tal fin, este estudio de tipo comparativo-documental se centró en determinar congruencias y discrepancias entre PEIC y PEI, utilizando el método comparativo estructurado en cuatro fases: descripción, interpretación, yuxtaposición y comparación, propuesto por Hilker y Bereday (1972 Entre los resultados se tienen: congruencias en cuanto surgen sobre las bases de diagnóstico externos efectuados por organismos internacionales UNESCO, CEPAL ante la inefectividad y baja productividad de ambos países; a nivel interno responden a políticas educativas reformadoras de currículum y leyes,. Discrepancias referidas al tiempo de implementación; en Venezuela a partir de 1996; Colombia en 1992; este último, consolidó las bases para la participación a través del gobierno escolar y de un sistema de evaluación institucional, muy incipiente en Venezuela.

  19. La Vocación entre los Aspirantes a Maestro

    Directory of Open Access Journals (Sweden)

    Encarnación Sánchez Lissen

    2003-01-01

    Full Text Available El contenido que ofrecemos en este artículo hace referencia a la dimensión vocacional de los aspirantes a maestro. Tradicionalmente, la enseñanza se ha considerado como una profesión genuinamente vocacional; una circunstancia que, sin embargo, no siempre le ha favorecido. En estos momentos, a pesar de las dificultades que rodean la tarea docente, existe un alto número de estudian-tes que optan por la enseñanza y acceden a las Escuelas de Magisterio. Real-mente, nos podríamos preguntar si el docente -nace o se hace- vocacional hacia esta actividad profesional. Aportamos para ello, los datos de una investigación realizada entre estu-diantes de la Universidad de Sevilla, donde se viene a demostrar por un lado que, muchos eligieron la carrera sin tener un verdadero interés por ella; y por otro, que las Escuelas de Magisterio son en muchos casos, un motor esencial para llegar a despertar o, a descubrir entre los estudiantes, su verdadero interés e inclinación por la enseñanza. Posiblemente, desarrollar actitudes vocaciona-les entre tos aspirantes a maestro es, también, una labor implícita de la Forma-ción Inicial de Maestros

  20. Causalidade entre as principais bolsas de valores do mundo

    Directory of Open Access Journals (Sweden)

    Hiron Pereira Farias

    2010-04-01

    Full Text Available O objetivo deste trabalho foi analisar os mercados dos países emergentes que fazem parte do Bric, com exceção da Índia, buscando mostrar como os mercados do Brasil, da Rússia e China se comportam entre si e em relação ao mercado dos Estados Unidos. Analisou-se também como alguns países desenvolvidos do grupo G8, Estados Unidos, Reino Unido e Japão, se comportam. Em cada análise, ajustou-se um modelo VAR e buscou-se verificar o grau de dependência dentro e entre cada grupo, utilizando teste de causalidade de Granger, critérios de seleção de modelos, função resposta a impulso e decomposição da variância do erro de previsão. Nas análises realizadas, os mercados brasileiro e americano mostraram forte influência sobre os demais mercados, e, na análise entre os grupos, consideraram-se o mercado dos Estados Unidos do grupo ERJ e todos os mercados emergentes do grupo BRC. O mercado americano mostrou forte influência sobre os outros mercados.

  1. An Environmental Management Model of Thermal Waters in Entre Ríos Province, Argentina

    Science.gov (United States)

    Pablo, Mársico Daniel; Luís, Díaz Eduardo; Ivana, Zecca; Oscar, Dallacosta; Antonio, Paz-González

    2015-04-01

    Deep exploratory drillings, i.e. those with more than 500 meters depth, have been performed in the Entre Ríos province, Argentina, in order to ascertain the presence of thermal water. Drilling began in 1994, and until now there have been 18 polls with very variable results in terms of mineralization, resource flow, and temperature. The aim of this study was to present a management model, which should allow operators of thermal complexes to further develop procedures for safeguarding the biodiversity of the ecosystems involved, both during exploration and exploitation activities. The environmental management Plan proposed is constituted by a set of technical procedures that are formulated and should be performed during the stages of exploration and exploitation of the resource, and consists of: environmental monitoring, environmental audit, public information and contingency programs. This Plan describes the measures and proposals aimed at protecting environmental quality in the area of influence of a thermal complex project, ensuring that its execution remains environmentally responsibly, and allowing implementation of specific actions to prevent or correct environmental impacts, as predicted in the evaluation of the Environmental Program. The audit of environmental impact includes and takes into account natural factors, such as water, soil, atmosphere, flora and fauna, and also cultural factors. The technical audit Plan was prepared in order to get a systematic structure and organization of the verification process, and also with regard to document the degree of implementation of the proposed mitigation measures. Finally, an environmental contingency program was implemented, and its objective was to consider the safeguarding of life and its natural environment. Thus, a guide has been developed with the main actions to be taken on a contingency, since forecast increases the efficiency of the response. The methodology developed here was adopted as the procedure

  2. Tracking local control of a parabolic trough collector; Control local de seguimiento cilindro parabolico ACE20

    Energy Technology Data Exchange (ETDEWEB)

    Ajona, J I; Alberdi, J; Gamero, E; Blanco, J

    1992-07-01

    In the local control, the sun position related to the trough collector is measured by two photo-resistors. The provided electronic signal is then compared with reference levels in order to get a set of B logical signals which form a byte. This byte and the commands issued by a programmable controller are connected to the inputs of o P.R.O.M. memory which is programmed with the logical equations of the control system. The memory output lines give the control command of the parabolic trough collector motor. (Author)

  3. Tracking local control of a parabolic trough collector. Control local de Seguimiento cilindro parabolico ACE 20

    Energy Technology Data Exchange (ETDEWEB)

    Ajona Maeztu, J.I.; Alberdi Primicia, J.; Gamero Aranda, E.; Blanco, J.

    1991-01-01

    In the local control, the sun position related to the trough collector is measured by two photo-resistors. the provided electronic signal is then compared with reference levels in order to get a set of 8 logical signals which form a byte. This byte and the commands issued by a programmable controller are connected to the inputs of a P.R.O.M. memory which is programmed with the logical ecuations of the control system. the memory output lines give the control commands of the parabolic trough collector motor. (author)

  4. Tracking local control of a parabolic trough collector; Control local de Seguimiento cilindro parabolico ACE 20

    Energy Technology Data Exchange (ETDEWEB)

    Ajona Maeztu, J.I.; Alberdi Primicia, J.; Gamero Aranda, E.; Blanco, J.

    1991-12-31

    In the local control, the sun position related to the trough collector is measured by two photo-resistors. the provided electronic signal is then compared with reference levels in order to get a set of 8 logical signals which form a byte. This byte and the commands issued by a programmable controller are connected to the inputs of a P.R.O.M. memory which is programmed with the logical ecuations of the control system. the memory output lines give the control commands of the parabolic trough collector motor. (author)

  5. PAPEL DE LA CONFIANZA en las relaciones entre organizaciones

    Directory of Open Access Journals (Sweden)

    Irene Juana Guillén Mondragón

    2006-07-01

    Full Text Available El objetivo del presente documento es analizar las definiciones y la importancia de la confianza para crear relaciones de cooperación entre organizaciones de naturaleza distinta. Se hace referencia a los modelos de organización dominantes para acercarnos a los nuevos mecanismos de regulación social propuestos por la sociología para tratar la organización, debido a que en el contexto actual las nuevas concepciones de la organización del trabajo han promovido en las organizaciones formas distintas de competir en el mercado. Procesos de cambio que obligan a las organizaciones a construir una nueva identidad y a renovar los contratos psicológicos con sus integrantes. La noción de confianza ha sido llevada del ámbito social al organizacional con la finalidad de lograr acuerdos entre organizaciones y al mismo tiempo lograr el compromiso de los integrantes de tales entidades. Para que estas puedan funcionar bajo este marco de transformaciones requieren de relaciones de colaboración regidas por la  confianza; relaciones que se dan en los niveles individual, dentro de la organización, entre organizaciones e institucionalmente. Los diferentes niveles de confianza están presentes en las relaciones que entablan los individuos, tanto dentro de la organización como en su entorno. Algunas de las reflexiones en torno a esta problemática nos llevan a pensar que el papel de la confianza es dinámico e incide en la transferencia y el intercambio de conocimientos, técnicas y procedimientos científicos, tecnologías, productos, capitales, entre otros. Además, las relaciones fundadas en la confianza requieren de la suspensión del propio interés, en beneficio de unaorientación colectiva (Mangematin y Thuderoz, 2003. Sin embargo, también se reconoce que con todo y la posibilidad que el hombre tiene de deliberar y de generar confianza, es evidente que entre los hombres prevalecen tanto la confianza calculada como los deseos de altruismo para entrar

  6. Relación entre el consumo de drogas y maltrato infantil entre estudiantes universitarios de la universidad en Colombia

    Directory of Open Access Journals (Sweden)

    Monica Rosaura Garcia Baquero

    2015-01-01

    Full Text Available Esta investigación examina la relación entre el uso de drogas en estudiantes de una Universidad Pública en Villavicencio, Colombia, y su relación con el maltrato durante la niñez, utilizando como referente teórico la perspectiva bioecológica. Estudio exploratorio retrospectivo, con una muestra de 313 estudiantes de pregrado. El 10.2% de los encuestados refiere haber sido maltratado en la Infancia y la violencia de mayor uso fue la violencia física seguida de la violencia psicológica. El 56.9% de las estudiantes encuestados han consumido sustancias psicoactivas en algún momento de la vida, y su inicio entre los 13 y los 18 años. Se evidencia maltrato en la infancia con manifestaciones de agresiones físicas, al igual que el consumo de sustancias psicoactivas, pero no se observa una relación estadísticamente significativa entre maltrato durante la infancia y el consumo de sustancias psicoactivas en la muestra estudiada.

  7. Entre propietarios y migrantes: los encuentros y desencuentros entre Colonos y Aguarunas en el alto mayo”

    Directory of Open Access Journals (Sweden)

    Kenneth E. Garces Montes

    2013-10-01

    Full Text Available La dinámica de conflictos entre colonos y nativos en el Alto Mayo, ha dado como producto continuosenfrentamientos entre caseríos de colonos y comunidades nativas colindantes, así como una seriede procesos judiciales por “usurpación de tierras”, en los cuales no se logra una ejecución efectiva dela sentencia a pesar que esta sea favorable a los nativos, debido a la distancia social que existe entrelos operadores estatales y el conflicto real. Por su parte los mecanismos de convivencia entre colonosy nativos se inician mediante el alquiler de tierras, diseñada como una fórmula temporal para quelos colonos se retiren una vez vencido el plazo del alquiler, sin embargo la ampliación de los plazosprovoca que los mismos adquieran vocación de permanencia.Una serie de actores, de primer, segundo y tercer orden interactúan alrededor de las dos dinámicasde relacionamiento mencionadas; tales como las ONGs, el Estado, organizaciones indígenas, einclusive mafias de traficantes de tierras. Ante esta realidad tan compleja conviene hacer el ejerciciode plantear propuestas de adaptabilidad (o subsistencia de las comunidades nativas, en las quese visualice la supervivencia de lo local frente a lo global en lo que a demarcación de tierras de lascomunidades nativas se refiere.

  8. Entre-sons, entre-mundos, entre-idades: ações dialógicas, cultura adolescente e educação musical

    OpenAIRE

    Vertamatti, Leila Rosa Gonçalves [UNESP

    2012-01-01

    O presente trabalho tem como ponto central a reflexão a respeito da prática da Educação Musical de jovens entre 11 e 14 anos, do Colégio São José de São Bernardo do Campo, a partir de uma proposta que dialogue com o universo do adolescente, a invenção, a percepção do ambiente acústico, visual, social e cultural e o contexto escolar. A principal questão da investigação é a discussão de processos de elaboração de ações musicais com base em um conceito de prática que leve em conta a distância ex...

  9. ENTRE DOS INTEMPERIES. APUNTES SOBRE LAS RELACIONES ENTRE EL FORO Y EL MERCADO / Between two adversities: notes on the relationship between Forum and Market

    Directory of Open Access Journals (Sweden)

    Antonio Armesto Aira

    2010-05-01

    Full Text Available RESUMEN Este ensayo encadena tres niveles. En el primero, de la pregunta por la utilidad genuina de la arquitectura, definida en los orígenes, se deriva que la arquitectura preserva la vida de dos clases de intemperie: de la intemperie física, procurando un equilibrio con el medio (homeostasis y de la intemperie moral procurando orientación espacio temporal. Esta doble utilidad la cumplen y la expresan unos utensilios concretos y universales, formas necesarias y objetivas, no arbitrarias, arquetipos que fundan la tradición de las formas propias de la arquitectura en la historia. El êthos de la humanidad, cuyo núcleo es la conciencia, para constituirse tomará de la formalidad de estos utensilios su propia sustancia formal, desde el momento en que con ellos es capaz de conjurar el tiempo destructor de la vida (meteorológico y cronológico – un tiempo discontinuo–, y exorcizar el espacio amorfo –un espacio continuo– y desorientador de la naturaleza. Esos utensilios forman un relieve tectónico, superpuesto al de la naturaleza otorgada, al que llamamos paisaje. En el segundo nivel se descubre que la estructura de ese paisaje reposa sobre la similitud entre estas formas objetivas y los caracteres del mercado y del foro que se corresponden, respectivamente, con la idea de homeostasis y con la de orientación. En el tercer nivel se estudian las modalidades de relación entre foro y mercado con el objeto de hallar instrumentos para hacer la crítica del presente. El criterio principal es que foro y mercado deben mantener en la realidad una relación dialógica (conservar su contradicción o composición y no dialéctica pues una síntesis superadora entre ellos, cuando se da, conlleva un decaimiento de la formalidad de la conciencia, menoscaba el êthos de la humanidad y produce la quiebra ética del paisaje. SUMMARY This essay encompasses three levels. The first, on the question of the genuine utility of architecture, defined in the

  10. La disciplina entre las disposiciones legales y los actores escolares

    Directory of Open Access Journals (Sweden)

    Nancy Palacios Mena

    2013-01-01

    Full Text Available Este artículo presenta una descripción del funcionamiento de la disciplina escolar en una institución educativa de secundaria en Colombia. Tiene como objetivo explicar el origen del conflicto disciplinario, las situaciones que lo generan, la forma como la institución trata de lograr y mantener la disciplina, las explicaciones que cada uno de los actores da a las situaciones conflictivas y la manera como son vividas por ellos. El diseño metodológico de la investigación combinó una encuesta, entrevistas y el análisis de documentos de la institución educativa. El análisis de los datos se hace a la luz de planteamientos sociológicos que reconocen la enorme importancia que ejercen las estructuras sociales sobre la forma de pensar y actuar de los individuos, pero también resaltan la gran capacidad de los actores sociales para amoldarse a dichas estructuras y a través de sus ideas y acciones darle una dinámica propia al tipo de relaciones que establecen entre individuos en sus entornos de vida más inmediatos. Se pudo concluir que sobre la disciplina escolar no hay unidad de criterio entre los docentes, los directivos y los estudiantes, ni en su definición, ni en su importancia, ni en los medios para conseguirla; dichas diferencias producen tensiones y desacuerdos entre los miembros de la comunidad educativa.

  11. L’approche sociopsychologique de Horkheimer, entre Fromm et Adorno

    Directory of Open Access Journals (Sweden)

    Katia Genel

    2010-08-01

    Full Text Available Le cadre du programme interdisciplinaire de recherche défini par Max Horkheimer dans les années 1930 doit beaucoup à Erich Fromm, qui a introduit la psychologie sociale dans la Théorie critique de la société. Or, une décennie plus tard, Fromm est la cible privilégiée des attaques et sa théorie apparaît désormais comme incompatible avec les positions défendues par Horkheimer et Adorno. Partant de ces tensions qui ont marqué l’histoire de l’École de Francfort, le présent article vise à éclaircir le déplacement qu’elles traduisent sur le plan épistémologique. Si Horkheimer et Fromm partagent des prémisses communes, le premier, dans son travail avec Adorno, se rapproche de manière croissante de la doctrine freudienne alors que le second s’en éloigne. Nous voudrions montrer que l’accord entre Fromm et Horkheimer fut surtout négatif puisqu’il portait sur la critique de Freud : les divergences entre les deux penseurs apparaissent clairement, dès lors qu’on pose en profondeur la question de l’usage de la psychanalyse pour analyser l’un des problèmes centraux de la théorie de la société, l’antagonisme entre individu et société.

  12. Consumo de alcohol entre estudiantes Mexicanos de medicina

    OpenAIRE

    Puig-Nolasco,Angel; Cortaza-Ramirez,Leticia; Cristina Pillon,Sandra

    2011-01-01

    Este estudio tiene por objetivo identificar el patrón de consumo de alcohol entre los estudiantes mexicanos de medicina. Se trata de un estudio transversal realizado en la Universidad Veracruzana, en México, con 263 estudiantes (84,4%). El cuestionario contiene la Prueba de Identificación de Trastornos por el Uso del Alcohol y el Cuestionario de Estudiantes 2006. Los sujetos eran 60% mujeres, jóvenes. El uso en la vida fue de 71,9% y la edad de inicio 12,5 años. La frecuencia del consumo fue ...

  13. Relaciones entre matutinidad-vespertinidad y estilos de personalidad

    OpenAIRE

    Díaz Morales, Juan Francisco; Aparicio García, Marta Evelia

    2003-01-01

    El propósito de este estudio es analizar los perfiles diferenciales de personalidad según la tipología circadiana en un grupo de 189 personas, a los que se aplicó la Escala Compuesta de Matutinidad (Smith, Reilly y Midkniff, 1989), traducida y adaptada a la población española por Díaz Ramiro (2000) y el Inventario Millon de Estilos de Personalidad (Millon, 1994), traducido y adaptado a la población española (Millon, 2001). Se han estudiado las relaciones entre ...

  14. Fronteiras entre meios e formas em Cabra marcado para morrer

    OpenAIRE

    Hamburger,Esther Império

    2017-01-01

    Resumo O documentário Cabra marcado para morrer (1964-1984) apresenta uma combinação original de elementos oriundos da prática do Centro Popular de Cultura da União Nacional dos Estudantes (CPC da UNE) que produziu o filme, da experiência televisiva do diretor na equipe do Globo Repórter e da prática dos cinemas diretos. Identificar nos fragmentos de materiais filmados pelo CPC entre 1962 e 1964 em diversos locais do Nordeste e compilados com materiais filmados no início dos anos 1980 de mane...

  15. Procedimientos para detectar y medir el sesgo entre observadores

    OpenAIRE

    Benavente, Ana; Alto, Manuel; López, Juan José

    2006-01-01

    En este trabajo se realiza un análisis de los distintos métodos para detectar y medir el sesgo entre observadores desde dos perspectivas básicas: el enfoque clásico, fundamentado en índices descriptivos y el enfoque del modelado, fundamentado en modelos loglineales. Se demuestra que estas medidas no son satisfactorias para detectar y medir el sesgo de forma unívoca porque presentan resultados contradictorios y se proponen nuevas alternativas a desarrollar que permitan descomponer correctament...

  16. Estudio comparativo entre SIG propietario y SIG libre

    OpenAIRE

    Mesa Díaz, Juan Ramón

    2008-01-01

    Estudio comparativo entre SIG propietario y SIG libre, focalizado en los casos particulares de Geomedia Pro (SIG Propietario) y gvSIG (SIG Libre). En el estudio se procede a determinar cuáles son los aspectos destacables de un SIG, para poder evaluarlos, posteriormente, en los dos SIG objeto del estudio y obtener una ponderación definitoria de cada SIG. A continuación, algunos de los aspectos evaluados en cada SIG: interoperabilidad, conexión a bases de datos espaciales, aspectos económ...

  17. De embajadas y regalos entre califas y emperadores

    OpenAIRE

    Valdés Fernández, Fernando

    2013-01-01

    Este artículo se centra en las relaciones que mantuvo el Califato de Córdoba con las principales potencias políticas de la Europa medieval en el siglo x. Estos contactos, que se establecían a través de embajadas sometidas a un rígido protocolo, se interpretarán analizando las misiones diplomáticas de Juan de Gorze, de Recemundo, de Liutprando de Cremona y el papel jugado, también, por Hasday Ibn Shaprut. Igualmente, se analizará el prolijo intercambio entre embajadas en su vert...

  18. Entre el desarrollo y el ambiente: incertidumbres de los agrocombustibles

    OpenAIRE

    León Sicard, Tomás Enrique

    2008-01-01

    El artículo plantea una discusión sobre la manera en que la dimensión ambiental puede ser concebida en relación con el actual concepto de desarrollo, a partir de una visión que entiende lo ambiental como relaciones complejas entre los ecosistemas y las culturas humanas y a partir de este punto, examina el modelo agrario dominante en Colombia versus los modelos de agricultura alternativa y la aparición de los biocombustibles, como una consecuencia ineludible del modelo domi...

  19. Revisión entre pares como instrumento de aprendizaje

    OpenAIRE

    Crespo García, Raquel; Villena Román, Julio

    2005-01-01

    Proyecto de Innovación Docente en las asignaturas de Organización de Contenidos Audiovisuales y e Inteligencia en Redes de Comunicaciones Este artículo describe la experiencia de innovación docente llevada a cabo este último curso basada en la aplicación de la metodología de revisión entre iguales como instrumento para el aprendizaje, desarrollada en las asignaturas Organización de Contenidos Audiovisuales (Ingeniería Técnica de Telecomunicación, especialidad Sonido e Imagen) durante el cu...

  20. A Europa no Mundo Entre as Guerras 1919-1939

    OpenAIRE

    Rollo, Maria Fernanda; Ribeiro, Maria Manuela Tavares; Pires, Ana Paula; Cunha, Alice; Valente, Isabel Maria Freitas

    2014-01-01

    O II Encontro A Europa no Mundo é dedicado ao estudo, análise, debate e interpretação das transformações políticas, económicas, sociais e culturais ocorridas na Europa durante o período entre guerras. Os textos compilados neste e-book correspondem a uma parte das comunicações apresentadas no Encontro, reflectem a investigação realizada e procuram constituir um ponto de partida para novas e mais aprofundadas reflexões.

  1. Interfaces entre funções executivas, linguagem e intencionalidade

    OpenAIRE

    Tonietto,Lauren; Wagner,Gabriela Peretti; Trentini,Clarissa Marceli; Sperb,Tania Mara; Parente,Maria Alice de Mattos Pimenta

    2011-01-01

    A relação entre linguagem e funções executivas, também conhecidas como funções cognitivas complexas, já foi estabelecida no passado por Luria e Vygotsky. Este artigo tem por objetivo revisar o conceito de funções executivas sob as perspectivas neuropsicológica e cognitiva. Alguns dos reconhecidos modelos sobre processamento das funções executivas são apresentados, assim como estudos recentes sobre funções executivas em crianças. O desenvolvimento das funções executivas é discutido sob o ponto...

  2. Sintomas e fatores de risco para asma entre escolares piauienses

    OpenAIRE

    Castro, Gessianne Carvalho; Sousa, Lívia Kênia de Carvalho; Vera, Paula Valentina de Sousa; Lima, Luisa Helena de Oliveira; Oliveira, Edina Araújo Rodrigues; Lima, Rúbia Fernanda Santos; Magalhães, Luis Fernando Beserra; Araújo, Nileide Lima; Lopes, Marcos Venícios de Oliveira

    2012-01-01

    OBJETIVOS: Analisar a prevalência de sintomas de asma entre escolares de seis a sete anos do município de Picos-PI; e identificar fatores de risco associados à doença. MÉTODOS: Estudo transversal realizado com crianças de 6 e 7 anos de Picos em novembro de 2010 a maio de 2011. Para coletar os dados, foi utilizado um formulário adaptado do Internacional Study of Asthma and Allergies in Childhood. Os dados foram analisados com base na estatística descritiva e analítica. RESULTADOS: Dentre as 23...

  3. Relaciones entre estilos de amor y violencia en adolescentes

    OpenAIRE

    Iris Xóchitl Galicia Moyeda; Alejandra Sánchez Velasco; Francisco Javier Robles Ojeda

    2013-01-01

    De acuerdo a diversas evidencias, la manera en que los y las ado- lescentes establecen sus relaciones amorosas podría estar asociada con la violencia producida y recibida en el noviazgo. Para esclarecer cómo se manifiesta esta relación en una muestra de 105 mujeres y 93 hombres, con una edad entre los 13 y los 15 años, en el Estado de México, se aplicaron dos herramientas: la Escala de Actitudes Amo- rosas (EAA) (Hendrick & Hendrick, 1986) y el Cuestionario sobre Violencia en el Noviazgo (CVN...

  4. Transa: Arquitectura brasileira entre o Modernismo e o Tropicalismo

    OpenAIRE

    Maria João Trigo Moutinho Rito

    2015-01-01

    Brasil do "terceiro mundo", déspota, paternalista mas tropical. Assim seria o Brasil,dos anos 60, percepcionado por aqueles que, conscientes da realidade politica e social dopaís, não aceitavam a sua desvalorização, condenando os estereótipos e criando uma posiçãoanti-colonialista. Por entre as palavras imagéticas de Oswald de Andrade, fixavam-se registosreferenciais geradores de um caminho ao encontro da felicidade do Brasil anterior à chegada dosportugueses. A necessidade de fugir ao provin...

  5. Nature and nature values in organic agriculture

    DEFF Research Database (Denmark)

    Hansen, Lene; Noe, Egon; Højring, Katrine

    2006-01-01

    The relationship between agriculture and nature is a centra issue in the current agricultural debate. Organic farming has ambitions and a special potential in relation to nature. Consideration for nature is part of the guiding principals of organic farming and many organic farmers are committed...

  6. El (los Sur buscando al Sur. Una construcción entre estereotipos y realidad.

    Directory of Open Access Journals (Sweden)

    Mabel Franzone

    2010-11-01

    Full Text Available Todas las lecturas que podamos hacer del Sur, de sus propias representaciones, de aquellas vehiculizadas por el Norte, de sus creaciones, de sus reacciones, de su búsqueda constante de identidad, son lecturas de múltiples situaciones, que llaman a cruces insoslayables entre pueblos, entre distintas etnias, entre disciplinas, entre sentimientos que van desde el rechazo hasta la atracción casi magnética entre los dos hemisferios. Nuestra intención primera era la de reunir de manera aproximativa las problemáticas actuales de los Sur, ligadas a lo imaginario.

  7. Prazer e sofrimento entre os trabalhadores de Call Center

    Directory of Open Access Journals (Sweden)

    Carolina Scolari

    2009-12-01

    Full Text Available Os conceitos de Taylor foram fundamentais para o desenvolvimento industrial no século XX. Ainda hoje, seus ensinamentos estão presentes em diversos ramos da economia, inclusive, no setor de call center. Call center é uma estrutura que visa ao atendimento de clientes com a utilização de um terminal de computador e de um aparelho telefônico. Esse setor sofreu grande expansão e, em 2006, foi responsável pela geração de 60 mil empregos diretos, tornando-se uma forma de contato e negócios atrativa para empresas do ramo público e privado. O objetivo deste artigo foi analisar as vivências de prazer e sofrimento no trabalho entre os operadores de call centers. Foi realizada uma pesquisa qualitativa, estratégia de estudo de caso e método de análise dos dados, análise de conteúdo. Como resultados, foram elaboradas algumas categorias finais, entre elas as mediações no trabalho, analisada no presente artigo sob o referencial teórico da psicodinâmica do trabalho.

  8. Metamorfoses nas vanguardas: entre o homem e o animal

    Directory of Open Access Journals (Sweden)

    Kelvin Falcão Klein

    2011-08-01

    Full Text Available Este trabalho investiga a relação que se estabeleceu entre o homem e o animal no pensamento das vanguardas européias no início do século XX, principalmente o surrealismo, além de considerar uma parte de suas bases históricas e de suas sobrevivências na contemporaneidade. Partindo do caso de Édipo e da Esfinge, e das diferentes percepções críticas que gerou (desde Freud até Jacques Lacan e Giorgio Agamben, este trabalho reflete sobre as estratégias de afirmação do discurso da razão e da verdade na cultura ocidental, alcançando, com isso, o projeto de revistas de vanguarda como Acéphale e Minotaure. A categoria de metamorfose, na articulação com outros casos, é utilizada para considerar as implicações críticas do questionamento das fronteiras entre o homem e sua animalidade.

  9. Conflictos entre derechos constitucionales y maneras de resolverlos

    Directory of Open Access Journals (Sweden)

    Moreso, José Juan

    2010-10-01

    Full Text Available This paper deals with the question of the conflict of constitutional rights which acknowledge basic rights. It is shown that there are two extreme accounts: the subsumptive approach and the particularist approach that embody two main conceptions of practical rationality. Between both approaches there is room for a range of options. Two of them are taken into account: the proportionalist approach, which conserves the scope of rights restricting their stringency, and it is argued in favour of the specificationist approach, which preserve the stringency of rights restricting their scope.

    En este trabajo se analiza la cuestión de la colisión entre principios constitucionales que reconocen derechos básicos. Se muestra que hay dos posiciones extremas: el enfoque subsuntivo y el enfoque particularista, que encarnan dos grandes concepciones de la racionalidad práctica. Entre ambos enfoques hay lugar para un amplio espectro de opciones. Se toman dos en cuenta: el enfoque proporcionalista, que conserva el alcance de los derechos restringiendo su fuerza y el enfoque especificacionista, a favor del cual se argumenta, que conserva la fuerza de los derechos restringiendo su alcance.

  10. Relações lineares entre caracteres de linho

    Directory of Open Access Journals (Sweden)

    Alberto Cargnelutti Filho

    2016-01-01

    Full Text Available RESUMO Os objetivos deste trabalho foram avaliar as relações lineares entre caracteres de linho (Linum usitatissimum L. e identificar caracteres para a seleção indireta. Em área experimental de 15 × 15 m (225 m2, aos 134 dias após a semeadura, foram selecionadas, aleatoriamente, 300 plantas. Em cada planta, foram mensurados os caracteres altura de planta, número de ramos, número de cápsulas, massa verde de cápsulas, massa verde de parte aérea sem cápsulas, massa verde de parte aérea, massa seca de cápsulas, massa seca de parte aérea sem cápsulas e massa seca de parte aérea. Para cada caractere, foi calculada a média e o coeficiente de variação. Foi investigada a relação linear entre os caracteres por meio de análises de correlação e de trilha. Na cultura de linho, o número de cápsulas tem relação linear positiva com as massas verde e seca de cápsulas e de parte aérea e pode ser utilizado para seleção indireta.

  11. Desarrollo convergente municipal entre estados contiguos a Nayarit y Sinaloa

    Directory of Open Access Journals (Sweden)

    Eduardo Meza-Ramos

    2010-01-01

    Full Text Available El análisis del crecimiento económico registra disparidades sectoriales que se manifiestan en el interior de los países, entre las áreas urbanas y las rurales; entre las regiones prósperas y las rezagadas. En México la política de liberalización comercial no se ha visto reflejada de manera generalizada en la riqueza de la población. Se evaluó la hipótesis de convergencia en el ámbito municipal de los estados de Chihuahua, Durango, Jalisco, Nayarit, Sinaloa, Sonora y Zacatecas; por los datos considerados en el estudio se puede argumentar la existencia de convergencia ¿ y ¿, pues en promedio, la desviación estándar en el año 1989 fue de 1.73 y disminuyó a 1.31 en 2006. La convergencia ¿ describe una relación negativa con un valor absoluto de su estadístico mayor a 2; con 95% de confianza. Cabe señalar que se cuenta con políticas sociales y sectoriales pero se carece de políticas públicas que promuevan el desarrollo regional.

  12. A LIBERDADE EM SARTRE: UNIDADE ENTRE PROJETO E ENGAJAMENTO

    Directory of Open Access Journals (Sweden)

    Josiane Fátima Wambier

    2003-01-01

    Full Text Available O objetivo deste trabalho é refletir a liberdade em Sartre, tendo como base os textos: O existencialismo é um humanismo (1945 e Questão de método, a célebre introdução de Crítica da razão dialética (1960. A liberdade em Sartre é um tema filosófico e literário. No início do processo de sua trajetória intelectual, ela é encerrada dentro do cogito cartesiano: “penso, logo existo”. Apesar de ser concebida como uma pura subjetividade, ela também é entendida como projeto que se realiza na ação através do engajamento do homem no mundo. Posteriormente, ela é remetida para o plano histórico e relacionada com a necessidade no interior de uma tensão dialética entre objetividade e subjetividade. Mesmo nesta fase, o núcleo central do conceito sartreano de liberdade é conservado: a unidade entre projeto e engajamento.

  13. entre la pirámide y el axolotl

    Directory of Open Access Journals (Sweden)

    Paula Andrea Marín Colorado

    2006-01-01

    Full Text Available En este artículo se presenta un acercamiento a la novela Materia dispuesta, del escritor mexicano Juan Villoro. En esta aproximación analítica se pretende dilucidar la conexión entre la obra literaria y el medio en el que se gesta, así como con el momento histórico recreado en la anécdota de la novela (el terremoto ocurrido en Ciudad de México en 1985; lo anterior con el objetivo de establecer la propuesta estética del autor en esta obra y su relación con la visión que construye Materia dispuesta sobre los procesos de Modernidad y Postmodernidad en Latinoamérica. Para tal propósito se recurrirá a las investigaciones literarias y sociológicas de Mijail Bajtín, Zigmunt Bauman, Carlos Monsiváis y Octavio Paz, entre otros.

  14. RELAÇÃO ENTRE MODERNIDADE ORGANIZACIONAL E COMPROMETIMENTO ORGANIZACIONAL

    Directory of Open Access Journals (Sweden)

    Vanessa Machado Arraes

    2017-04-01

    Full Text Available Este estudo tem por objetivo investigar a relação entre a modernidade organizacional e o comprometimento organizacional em empregados públicos das Sociedades de Economia Mista do Ceará. O trabalho foi baseado na abordagem de padrões de modernidade organizacional, propostos por Eboli (1996 nos moldes validados por Sant’Anna (2002 e na abordagem tridimensional de comprometimento organizacional proposta por Meyer, Allen e Smith (1993. Recorreu-se a análise fatorial exploratória e confirmatória para a validação das escalas e ao modelo de equações estruturais para a confirmação das hipóteses. A população da pesquisa foi composta por 479 empregados, tendo como amostra 339 respondentes. Numa avaliação geral, a modernidade das organizações foi classificada como moderada. O comprometimento afetivo e o normativo foram avaliados como altos, e o instrumental como moderado. Foi possível constatar, ainda, por meio da modelagem de equações estruturais uma relação positiva e significativa entre a modernidade organizacional e o comprometimento afetivo e normativo.

  15. Apoio social e saúde entre idosos

    Directory of Open Access Journals (Sweden)

    Ramos Marília P.

    2002-01-01

    Full Text Available O presente artigo trata da relação entre a saúde dos idosos e relacionamentos sociais, bem como na interpretação e entendimento desta problemática sob a luz de dois enfoques teóricos: um macro, centrado na Teoria da Integração Social de Emile Durkheim e outro micro, centrado na Teoria das Trocas, de Peter Blau, com ênfase na Teoria da Eqüidade. A integração social (freqüência de contatos pode ter efeitos negativos na saúde, mas isto tem de ser medido pela qualidade dos contatos. Algumas conclusões apresentadas indicam que as relações sociais têm um efeito na saúde, no sentido de que as pessoas, nas sociedades modernas, esperam a reciprocidade, e, quando isto não é possível, principalmente na fase do envelhecimento, as pessoas sentem-se dependentes, e isso pode afetar a saúde de diferentes maneiras. Por outro lado, quando as pessoas têm problemas de saúde, elas experienciam uma falta de relações sociais balanceadas devido à incapacidade para trocar em bases iguais. Sendo assim, conclui-se que a relação entre relações sociais e saúde na população idosa pode ser uma relação recíproca.

  16. Relación entre el consumo de drogas y maltrato infantil entre estudiantes universitarios de la universidad en Colombia

    OpenAIRE

    Monica Rosaura Garcia Baquero; Robert Mann; Hayley Hamilton; Pat Erickson; Bruna Brands; Norman Giesbrecht; Maria da Glória Miotto Wright; Francisco Cumsille; Jaime Sapag; Akwatu Khenti

    2015-01-01

    Esta investigación examina la relación entre el uso de drogas en estudiantes de una Universidad Pública en Villavicencio, Colombia, y su relación con el maltrato durante la niñez, utilizando como referente teórico la perspectiva bioecológica. Estudio exploratorio retrospectivo, con una muestra de 313 estudiantes de pregrado. El 10.2% de los encuestados refiere haber sido maltratado en la Infancia y la violencia de mayor uso fue la violencia física seguida de la violencia psicológica. El 56.9%...

  17. Relación entre el consumo de drogas y maltrato infantil entre estudiantes universitarios de la universidad en Colombia

    OpenAIRE

    Baquero,Monica Rosaura Garcia; Mann,Robert; Hamilton,Hayley; Erickson,Pat; Brands,Bruna; Giesbrecht,Norman; Wright,Maria da Glória Miotto; Cumsille,Francisco; Sapag,Jaime; Khenti,Akwatu

    2015-01-01

    Esta investigación examina la relación entre el uso de drogas en estudiantes de una Universidad Pública en Villavicencio, Colombia, y su relación con el maltrato durante la niñez, utilizando como referente teórico la perspectiva bioecológica. Estudio exploratorio retrospectivo, con una muestra de 313 estudiantes de pregrado. El 10.2% de los encuestados refiere haber sido maltratado en la Infancia y la violencia de mayor uso fue la violencia física segui...

  18. El falso dilema entre creación y evolución

    Directory of Open Access Journals (Sweden)

    Rafael Vicuña Errázuriz

    2007-08-01

    Full Text Available Desde que Charles Darwin publicó el Origen de las Especies en 1859, se inició una fuerte controversia por la aparente contradicción que existiría entre la evolución por selección natural propuesta por este eminente científico y el relato bíblico sobre la creación de los seres vivos. En nuestros días, lejos de haber amainado, esta polémica parece experimentar un renovado impulso. Por un lado, están los materialistas, que estiman innecesario recurrir a la existencia de un ser superior para explicar las maravillas de la naturaleza. Según ellos, la materia se manifiesta capaz de adoptar niveles crecientes de complejidad sin violar las leyes de la física y la química. En el extremo opuesto, está el movimiento creacionista, que al interpretar literalmente la Sagrada Escritura no acepta explicaciones científicas que den cuenta del surgimiento paulatino de los organismos. Ambas posturas adolecen de un error epistemológico, puesto que no consideran que la causalidad natural opera en un plano distinto al de la causalidad sobrenatural. Es decir, una correcta interpretación de la Sagrada Escritura la hace compatible con un proceso evolutivo.

  19. Three Sorts of Naturalism

    DEFF Research Database (Denmark)

    Fink, Hans

    2006-01-01

    In "Two sorts of Naturalism" John McDowell is sketching his own sort of naturalism in ethics as an alternative to "bald naturalism". In this paper I distinguish materialist, idealist and absolute conceptions of nature and of naturalism in order to provide a framework for a clearer understanding...

  20. Natural gas trends

    International Nuclear Information System (INIS)

    Anderson, A.

    1991-01-01

    This book provides data on many facets of the natural gas industry. Topics include: Canadian, Mexican; US natural gas reserves and production; Mexican and US natural gas consumption; market conditions for natural gas in the US; and Canadian natural gas exports

  1. Fluxo gênico recíproco entre cultivares de soja convencional e geneticamente modificada

    Directory of Open Access Journals (Sweden)

    Welison Andrade Pereira

    2012-02-01

    Full Text Available O objetivo deste trabalho foi determinar o fluxo gênico recíproco entre duas cultivares de soja, uma tolerante e outra sensível ao glifosato, além de aplicar estimadores para determinar a taxa de fecundação cruzada na população e o número de sementes híbridas na progênie. O experimento compôs-se de quatro blocos com 40 fileiras de soja, com 20 fileiras de cada cultivar (CD217 e CD219RR. No estádio R8, cinco fileiras, distantes 0, 5, 1, 2, 4 e 8 m da cultivar adjacente, foram colhidas, trilhadas e analisadas quanto à ocorrência de fluxo gênico. Como características marcadoras, foram utilizadas as cores da flor, hipocótilo e pubescência, e a tolerância ao glifosato. As cultivares contrastam quanto às características analisadas, cada uma condicionada por um gene com dois alelos, em interação de dominância completa. Na progênie da cultivar tolerante, a maior taxa de híbridos encontrada foi 0, 27% e, na progênie da cultivar sensível, identificou-se 0, 83%; pela hipótese do efeito diluição, as taxas de hibridação natural populacional seriam 0, 104 e 0, 388%, respectivamente. O fluxo gênico recíproco entre as cultivares CD217 e CD219RR não é o mesmo em ambas as direções. Os estimadores propostos são úteis para determinar a taxa de híbridos em amostras de sementes.

  2. A Natural Language Architecture

    OpenAIRE

    Sodiya, Adesina Simon

    2007-01-01

    Natural languages are the latest generation of programming languages, which require processing real human natural expressions. Over the years, several groups or researchers have trying to develop widely accepted natural language languages based on artificial intelligence (AI). But no true natural language has been developed. The goal of this work is to design a natural language preprocessing architecture that identifies and accepts programming instructions or sentences in their natural forms ...

  3. Dos años entre los indios

    Directory of Open Access Journals (Sweden)

    Ardila Ardila Olga Felisa

    1996-06-01

    Full Text Available

    La obra constituye la traducción del alemán publicada originalmente en dos volúmenes por E. Wasmuth en Berlín en 1909. En 1967 la Akademische Druck-u Verlagsanstalt en Graz (Austria publicó la segunda edición de la obra original, sobre la cual se trabajó la presente versión en español. La traducción estuvo a cargo de la antropóloga María Mercedes Ortiz. Koch-Grünberg se dedicó al estudio de la filología clásica pero con el tiempo se fue interesando cada vez más por el estudio de los pueblos autóctonos de Suramérica. En 1903 realizó su primera expedición a partir del noroeste brasilero hasta Colombia, en la región comprendida entre el alto río Negro y el Yapurá, área muy poco explorada hasta el momento. La obra Dos años entre los indios resume los resultados básicos de esta expedición. El autor alemán presenta el relato de sus cuatro viajes e ilustra con un mapa la ruta de su expedición a partir del Amazonas. Además del noroeste brasilero, el autor recorre un área importante del territorio colombiano, especialmente la zona del actual departamento del Vaupés. El libro está escrito en forma de un diario de viaje en el que se destacan sus observaciones etnográficas y lingüísticas, especialmente en lo que respecta a la cultura material, el ritual, el arte, las diferentes lenguas nativas habladas en la región y las relaciones de afinidad existentes entre dichas lenguas.

  4. Peter Shepheard Espacios intermedios entre la arquitectura y el paisaje

    Directory of Open Access Journals (Sweden)

    Juan J. Tuset

    2015-05-01

    Full Text Available ResumenAcabada la Segunda Guerra Mundial, el Movimiento Moderno se debatió entre su continuidad o crisis, lo que llevó a numerosos arquitectos y críticos a formular teorías y adoptar actitudes disciplinares trasgresoras con el momento. Una de ellas fue la del arquitecto, urbanista y paisajista inglés Peter Shepheard quien desarrolló una actividad profesional, teórica y docente de la que se trasluce la relevancia del concepto in between como una de las claves defi nitorias del diseño arquitectónico en la segunda mitad del siglo XX. Para Shepheard el diseño moderno debía ser el encuentro entre la arquitectura, el urbanismo y el paisaje. Aseveración que vino precedida por diferentes tipos de obras arquitectónicas, proyectos urbanos, artículos y publicaciones sobre el diseño del paisaje y del jardínque le convirtieron en una voz de referencia en el contexto británico. Shepheard alentó a los paisajistas a convencerse de que las tres disciplinas anteriores convergen en un sola y que la responsabilidad de la joven profesión de arquitecto del paisaje es asumir el reto del diseño arquitectónico, urbano y paisajístico como un todo en la búsqueda y defi nición de espacios intermedios entre la arquitectura y el paisaje. AbstractAfter the Second World War, Modernism started to debate his continuity or crisis. This led many architects and critics to formulate theories and take up breaking disciplinary attitudes against that time. One of them was the English architect, urban planner and landscape designer Peter Shepheard who developed a professional, theoretical and academic career where the concept in between got relevance as one of the defi ning keys of the architectural design in the second half of the twentieth century. To Shepheard modern design should be the encounter between architecture, urbanism and landscape. This claim was preceded by different types of architectural works, urban projects, articles and publications on

  5. La retractación arbitraria, entre principios y remedios

    Directory of Open Access Journals (Sweden)

    Matteo Dellacasa

    2012-06-01

    Full Text Available En la jurisprudencia italiana se ha consolidado el enfoque según la cual el juez está legitimado para controlar el ejercicio del derecho de retractación discrecional. Ante una solicitud expresa de la parte, el juez, incluso, está obligado a verificar la conformidad de la conducta de quien ejerce el derecho con el canon de la buena fe contractual. La reflexión de la doctrina italiana se concentra prevalentemente en la dialéctica entre autonomía privada y control judicial, mientras es menos frecuentado el terreno de los remedios que siguen a la retractación arbitraria. En este segundo perfil se concentra el presente escrito. En primer lugar, se afirma que el control jurisdiccional de la retractación ad nutum es oportuno en relación con todos los contratos, y no solo en aquellos caracterizados por la asimetría de poderes entre las partes. El remedio generalmente aplicable a favor de la parte que sufre la retractación arbitraria se identifica con el resarcimiento del interés negativo: el contratante desilusionado puede obtener el reembolso de los gastos asumidos y el resarcimiento de las oportunidades de ganancias perdidas como consecuencia de la confianza depositada en la realización del negocio. En segundo lugar, se delinean los criterios que permiten identificar la retractación arbitraria. En fin, se analiza si la existencia de una relación de dependencia económica entre la empresa que se retracta arbitrariamente y su contraparte contractual puede justificar la aplicación de un remedio diferente del resarcimiento del interés negativo. El autor está orientado a responder afirmativamente. Si la empresa que sufre la retractación ilegítima ha realizado inversiones específicas –centradas en las exigencias de la contraparte y, por esto, difícilmente recuperables–, el resarcimiento del interés negativo ofrece una tutela parcial e inadecuada. Los remedios aplicables, en cambio, deben salvaguardar el interés positivo de la

  6. Virginia Natural Heritage Program

    Science.gov (United States)

    Heritage About Natural Heritage Overview, Mission Natural Heritage Inventory Community Ecology Program ) | Strategic Plan (PDF) | Executive Progress Report (PDF) | Code of Ethics (PDF) Your browser does not support

  7. Natural Colorants: Food Colorants from Natural Sources.

    Science.gov (United States)

    Sigurdson, Gregory T; Tang, Peipei; Giusti, M Mónica

    2017-02-28

    The color of food is often associated with the flavor, safety, and nutritional value of the product. Synthetic food colorants have been used because of their high stability and low cost. However, consumer perception and demand have driven the replacement of synthetic colorants with naturally derived alternatives. Natural pigment applications can be limited by lower stability, weaker tinctorial strength, interactions with food ingredients, and inability to match desired hues. Therefore, no single naturally derived colorant can serve as a universal alternative for a specified synthetic colorant in all applications. This review summarizes major environmental and biological sources for natural colorants as well as nature-identical counterparts. Chemical characteristics of prevalent pigments, including anthocyanins, carotenoids, betalains, and chlorophylls, are described. The possible applications and hues (warm, cool, and achromatic) of currently used natural pigments, such as anthocyanins as red and blue colorants, and possible future alternatives, such as purple violacein and red pyranoanthocyanins, are also discussed.

  8. Les Affinités électives de Goethe : entre science et littérature

    Directory of Open Access Journals (Sweden)

    Bernard Joly

    2011-03-01

    Full Text Available Par leur titre même, Les affinités électives de Goethe renvoient à la doctrine chimique des rapports entre différents corps qui, à partir des travaux d’Etienne-François Geoffroy en 1718, s’impose comme théorie dominante dans la chimie du XVIIIe siècle. Goethe ne se contente pas d’une simple analogie entre les attirances amoureuses qui font et défont les couples et les opérations chimiques qui règlent les liaisons et les précipitations des substances chimiques. Son excellente connaissance de la tradition chimique et alchimique le conduit à considérer l’affinité comme une loi de la nature produisant aussi bien ses effets en chimie que chez les êtres vivants et dans le psychisme.The title of Goethe’s novel Elective Affinities refer to the chemical tenet of rapports between different bodies which, from Etienne-François Geoffroy’s works in 1718, emerge as a prevailing theory in the eighteenth-century chemistry. Goethe does not limit his views to the analogy between love attractions which made and break up couples and chimical processes which determine bonds and precipitations of chemical substances. His excellent knowledge of chemical and alchemical tradition leads him to consider affinity as a law of nature having effects in chemistry as well as in living being and into mind.

  9. Similaridade entre Adultos e Regenerantes do Componente Arbóreo em Floresta com Araucária

    Directory of Open Access Journals (Sweden)

    Manoela Drews de Aguiar

    2017-08-01

    Full Text Available RESUMO O estudo objetivou inventariar o componente arbóreo regenerante em uma floresta no Planalto Sul de Santa Catarina e compará-lo ao componente adulto da mesma área. Foram alocadas 25 parcelas, onde os regenerantes e adultos foram identificados e quantificados. Foi calculado o Índice de Regeneração Natural Total (RNT de cada espécie. Para verificar a similaridade entre os componentes, foi utilizada a Análise de Similaridade e o índice de Jaccard. Foram amostrados 503 regenerantes, pertencentes a 58 espécies e 29 famílias. Myrtaceae foi a família de maior riqueza (13. Leandra regnelli (Triana Cogn., Myrcia splendens (Sw. DC. e Miconia cinerascens Miq. apresentaram os maiores valores de RNT. Houve elevada dissimilaridade entre regenerantes e adultos, sendo que 37,5% das espécies do componente adulto não tiveram representantes na regeneração natural. Conclui-se que existe uma baixa capacidade regenerativa da maior parte das espécies, o que pode estar associado à presença de gado na área.

  10. Regularities, Natural Patterns and Laws of Nature

    Directory of Open Access Journals (Sweden)

    Stathis Psillos

    2014-02-01

    Full Text Available  The goal of this paper is to sketch an empiricist metaphysics of laws of nature. The key idea is that there are regularities without regularity-enforcers. Differently put, there are natural laws without law-makers of a distinct metaphysical kind. This sketch will rely on the concept of a natural pattern and more significantly on the existence of a network of natural patterns in nature. The relation between a regularity and a pattern will be analysed in terms of mereology.  Here is the road map. In section 2, I will briefly discuss the relation between empiricism and metaphysics, aiming to show that an empiricist metaphysics is possible. In section 3, I will offer arguments against stronger metaphysical views of laws. Then, in section 4 I will motivate nomic objectivism. In section 5, I will address the question ‘what is a regularity?’ and will develop a novel answer to it, based on the notion of a natural pattern. In section 6, I will raise the question: ‘what is a law of nature?’, the answer to which will be: a law of nature is a regularity that is characterised by the unity of a natural pattern.

  11. Cultura organizacional: sinergias e alergias entre Hofstede e Trompenaars

    Directory of Open Access Journals (Sweden)

    Daniel Pacheco Lacerda

    2011-10-01

    Full Text Available Entre os diferentes elementos a serem considerados na gestão atualmente, os aspectos culturais têm se colocado na centralidade das discussões organizacionais. Essa posição deriva do fato de que a vantagem competitiva sustentável se origina da compreensão, respeito e utilização das diferenças de hábitos, práticas, pontos de vistas e competências. Empresas com atuação local ou global precisam atentar para as características oriundas de seu capital humano. O presente trabalho busca apresentar algumas evidências das implicações culturais a partir do prisma das dimensões culturais. Para isso é realizada uma breve revisão sobre o tema, em seguida são discutidas algumas repercussões para as organizações.

  12. Resiliencia en estudiantes universitarios. Un estudio comparado entre carreras

    OpenAIRE

    Caldera Montes, Juan Francisco; Aceves Lupercio, Brenda Isabel; Reynoso González, Óscar Ulises

    2016-01-01

    Resumen El presente trabajo tuvo como propósito conocer el nivel de resiliencia en una muestra de estudiantes universitarios de una institución de educación superior pública del estado de Jalisco, México. Además de ello, se analizó la relación y diferencia entre la resiliencia y las variables de sexo, edad y nivel socioeconómico. Para medir la variable de interés se utilizó la Escala de Resiliencia desarrollada por Wagnild y Young (1993) en su versión traducida y adaptada al español por Heile...

  13. Resiliencia en estudiantes universitarios. Un estudio comparado entre carreras

    OpenAIRE

    Juan Francisco Caldera Montes; Brenda Isabel Aceves Lupercio; Óscar Ulises Reynoso González

    2016-01-01

    El presente trabajo tuvo como propósito conocer el nivel de resiliencia en una muestra de estudiantes universitarios de una institución de educación superior pública del estado de Jalisco, México. Además de ello, se analizó la relación y diferencia entre la resiliencia y las variables de sexo, edad y nivel socioeconómico. Para medir la variable de interés se utilizó la Escala de Resiliencia desarrollada por Wagnild y Young (1993) en su versión traducida y adaptada al español por Heilemann, Le...

  14. Aprendiendo de mi salud entre contextos y cuentos

    OpenAIRE

    Moreno Cadavid, Erika; Piedrahita Velásquez, Ana María; Hernández Enríquez, Colombia

    2009-01-01

    Se presenta el informe de una investigación cuyo propósito fue sistematizar y analizar un proceso de implementación de dos estrategias de intervención pedagógica, orientadas a promover la resiliencia y la adaptación al contexto hospitalario de un grupo de niños y niñas entre 4 y 12 años de edad, hospitalizados en las Salas de Hemato-Oncología y Nefrología del Hospital Universitario San Vicente de Paúl (HUSVP), de Medellín, durante el año 2006. This article presents the report of an invest...

  15. O humor entre os povos Jê: cotidiano e ritual

    OpenAIRE

    Dias, Lucília da Glória Alves

    2015-01-01

    O objetivo do presente trabalho é refletir sobre o riso e o humor na experiência das sociedades indígenas jê, Brasil Central. Com base na análise da etnografia sobre povos jê produzida entre as décadas de 1970 e 2010, a presença do humor é tratada aqui em dois contextos específicos: as relações interpessoais chamadas pela antropologia clássica de “relações jocosas” e a presença em rituais de figuras cômicas ou “palhaços”. O primeiro conjunto é abordado principalmente da perspectiva da “conviv...

  16. O diálogo entre poesia e outras artes

    Directory of Open Access Journals (Sweden)

    Luiz Henrique Barbosa

    2012-11-01

    Full Text Available O objetivo com este artigo foi identificar os possíveis diálogos entre a poesia e as outras artes. Apoiados na afirmação de Solange Ribeiro de Oliveira de que é possível comparar a ordem literária com outra ordem estética, tentou-se aqui aproximar a poesia de outra estética artística. Para isso, foram selecionados dois poetas do Modernismo brasileiro: João Cabral de Melo Neto e Manoel de Barros. Chegou-se à conclusão de que o fazer poético desses autores apresenta semelhanças com as técnicas utilizadas pela estética surrealista.

  17. Os Usos do Tempo Livre entre Jovens de Classes Populares

    Directory of Open Access Journals (Sweden)

    Manoela Pagotto Martins Nodari

    Full Text Available RESUMO O presente estudo, de caráter quantitativo, pretendeu investigar aspectos relacionados ao tempo livre de jovens de classes populares. Participaram da pesquisa 291 jovens (53,3% meninas, de 15 a 19 anos (M = 16,3; DP = 1,09, estudantes de ensino médio em escolas públicas da Grande Vitória, ES. Os dados foram coletados através de questionário e analisados através do software SPSS. Os resultados apontaram, principalmente, para os diferentes fatores envolvidos nas formas de apropriação do tempo livre entre esses jovens, não relacionados estritamente à renda, mas também a aspectos como gênero, meio em que vivem, estilos de vida e grupos de que participam.

  18. Entre normas e fatos: desafios e dilemas da ordem internacional

    Directory of Open Access Journals (Sweden)

    Cruz Sebastião C. Velasco e

    2003-01-01

    Full Text Available Examinam-se os limites e o significado da controvérsia entre "realistas" que invocam fatos e "cosmopolitas" que invocam normas, com referência às perspectivas da ordem internacional após 11 de setembro de 2001. Contra a idéia da retomada pelos EUA do multilateralismo, ou do seu oposto, a idéia dos EUA como sede de um verdadeiro império mundial, propõe-se um "cenário de transição", marcado por turbulências inter- e intra-estatais, sem prejuízo da possibilidade real de uma configuração mais equilibrada no futuro.

  19. La Cooperación Internacional entre Servicios

    Directory of Open Access Journals (Sweden)

    Pulido Gragera, Julia

    2005-01-01

    Full Text Available Los nuevos requerimientos en materia de seguridad que la comunidad internacional tiene que asumir como consecuencia de las nuevas amenazas y riesgos, obligan a que los Servicios de Inteligencia y de Información, objeto de análisis de este artículo, incrementen y mejoren la colaboración y cooperación entre ellos. En este sentido la aspiración de los Estados por poseer el máximo nivel de seguridad cediendo el mínimo de soberanía, se constituye como uno de los objetivos principales de los mismos, dificultad que se presenta, en la actualidad, para poder lograr una efectiva coordinación multilateral.…

  20. Entre el poder y el saber: Recuento del pensamiento latinoamericano

    Directory of Open Access Journals (Sweden)

    Luis Ramiro Beltrán Salmón

    2008-12-01

    Full Text Available Refiere el texto un resumen y análisis del libro "Entre el Saber y el Poder: Pensamiento comunicacional Latinoamericano". Libro de notable ejercicio de reflexión, de visión holística y totalizadora que recupera y sistematiza lo que se ha pensado sobre la comunicación y sus correspondientes dilemas en la América hispano-lusitana. La primera parte "la comunicación en las tramas del poder": con dos secciones, la una dedicada a la coyuntura de la Guerra Fría y la segunda dedicada a la coyuntura de la Globalización. La segunda "La comunicación en el umbral del saber" con dos secciones: la primera recoge materiales de la Educación para la comunicación y la otra la investigación de la comunicación.

  1. Armaduras de cosido entre hormigones prefabricados y ejecutados in situ

    Directory of Open Access Journals (Sweden)

    Solas, Andrés

    1988-04-01

    Full Text Available This article deals with the study of seam reinforcements between two concretes of different types which make up a compound element prefabricated and made in situ. The advantage of this type of construction is that the individual units can be made, transported and erected more easily, although some problems may arise. These facts receive special reference throughout the article.

    Este artículo trata sobre el estudio de las armaduras de cosido entre dos hormigones, de distinta naturaleza, que componen un elemento compuesto prefabricado y ejecutado in situ. La ventaja de este tipo de construcciones es que unidades individuales pueden ser hechas, transportadas y erigidas con mayor facilidad, pudiéndose derivar también algún problema. De todo ello se hace especial referencia a lo largo del artículo.

  2. Comportamento alimentar e imagem corporal entre estudantes de medicina

    Directory of Open Access Journals (Sweden)

    Maria Lúcia Magalhães Bosi

    Full Text Available Transtornos do comportamento alimentar (TCA tendem a ocorrer entre mulheres jovens, colocando universitárias como grupo de risco. Este estudo visa identificar comportamentos alimentares e imagem corporal como fatores de risco para TCA em estudantes de Medicina. É um estudo transversal com amostra aleatória representativa,que utilizou o índice de massa corporal (IMC autorreferido; o BodyShapeQuestionnaire (BSQ ; o BulimicInvestigatory Test Edinburgh (Bite ;e o EatingAttitudes Test (EAT-26 . A estatística foi descritiva,com teste do qui-quadrado e Anova,e nível de significância p<0,05. Asmédias(DP de idade e IMC foram20,8 (2,2 anos e 21,5 (2,6 kg/m². As prevalências foram: 27,7% apresentaram distorção da imagem corporal pelo BSQ; 31,7% expressaram comportamento alimentar anormal e 6,3% com risco para bulimia pelo Bite, sendo que 7,9% apresentaram sintomas com gravidade moderada/intensa; 19% tiveram risco de desenvolver distúrbios alimentares pelo EAT-26. Houve associação significativa entre IMC, imagem corporal e risco para TCA. Alunas de Medicina apresentaram risco subclínico ou estágio inicial de TCA e precisam de atenção para que estes distúrbios não prejudiquem sua saúde e prática profissionais.

  3. Uma atualidade in extremis: Foucault entre Marx e o neoliberalismo

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    Nilton Ken Ota

    2017-12-01

    Full Text Available A participação de Foucault no GIP marcou o momento de constituição de sua teoria estratégica das lutas no contexto de uma interlocução com militantes marxistas. O enfraquecimento dessa interlocução foi acompanhado pelo início das pesquisas genealógicas e por uma reformulação conceitual que dispersou o problema da racionalidade estratégica em benefício da construção de uma discursividade propriamente teórica. As controvérsias atuais ao redor dos sentidos do legado foucaultiano, cujo movimento pendular tem variado entre Marx e o neoliberalismo, revelam os efeitos de uma trajetória intelectual que se dividiu entre a reflexão crítica do combate concreto e a elaboração conceitual de um experimentalismo radical. Este artigo pretende reconstruir os principais pontos e conformações teóricas dessa trajetória. The participation of Foucault in GIP marked the moment of creation of strategic theory about the struggles in the context of a dialogue with Marxist militants. The weakening of that dialogue was accompanied by the start of genealogical research and, consequently, a conceptual reformulation which, among other changes, dispersed the problem of strategic rationality for the construction of a properly theoretical discursiveness. The current controversy surrounding the way the Foucault's legacy, whose pendulum has varied between Marx and neo-liberalism, reveal the effects of an intellectual journey that was divided between the critical reflection of the actual combat and the conceptual formulation of a radical experimentalism. The article An Actuality in extremis: Foucault Between Marx and Neoliberalism aims to reconstruct the main points and theoretical conformations that trajectory.Keywords: Marxism, strategy, neoliberalism, engagement, intellectuals

  4. Encuentros entre la India y Occidente en el mundo antiguo

    Directory of Open Access Journals (Sweden)

    María Teresa Román López

    1999-01-01

    Full Text Available Hay diversos testimonios sobre relaciones comerciales y culturales que, mucho antes de la caída de Babilonia y hasta el siglo vi de nuestra Era, tenían lugar entre el Próximo Oriente y Occidente, por un lado, y la India por otro. La expedición de Alejandro Magno en la India dio lugar no sólo a contactos militares, sino a debates filosófico-religiosos. Se halla una descripción casi completa de la flora en los autores griegos, y no es posible ignorar el arte grecobúdico que floreció después de la muerte de Alejandro en los reinos helénicos de la frontera. Está demostrado que misioneros budistas fueron enviados por el emperador Ashoka a Siria, Egipto, IVIacedonia, etc. En la época del Imperio romano las relaciones entre la India y el mundo occidental fueron muy frecuentes.There are several testimonies about comercial and cultural relationships that, after the falling of Babilonia and unta the VI century of our edge, were made between next Orient and Occident in one side, and India on the other side. The expedition of Alexander the Great to India made, note only military relations but philosophie and religious debates. It has been found a mostly complete description of the Flora on the greek authors, and it's not posible to ignore the grecobudie art that bloomed after Alexander death at the Helenio Kingdoms on the border. It's preved that budist missioners were send by the Ashoka emperor to Siria, Egipt, Macedonie, etc. On the Román Empire edge the relationships between India and the Occident worid were so frecuent.

  5. Natural and near natural tropical forest values

    Science.gov (United States)

    Daniel H. Henning

    2011-01-01

    This paper identifies and describes some of the values associated with tropical rain forests in their natural and near-natural conditions. Tropical rain forests are moist forests in the humid tropics where temperature and rainfall are high and the dry season is short. These closed (non-logged) and broad-leaved forests are a global resource. Located almost entirely in...

  6. Natural gas in India

    International Nuclear Information System (INIS)

    Lefevre, Thierry; Todoc, Jessie L.

    1999-11-01

    Contains Executive Summary and Chapters on: Country background; Overview of the energy sector; Natural gas supply; Natural gas infrastructure; Natural gas infrastructure; Natural gas demand; Outlook-government policy reform and industry development, and Appendices on Global and regional energy and gas trends; Overview of India's investment policy, incentives and regulation; The ENRON Dabhol power project. (Author)

  7. Medidas de adesão entre agregado e ligante asfáltico

    Directory of Open Access Journals (Sweden)

    Kamilla Lima Vasconcelos

    2009-06-01

    Full Text Available

    A adesão entre agregado e ligante asfáltico vem sendo apontada como uma propriedade de grande importância para a causa de defeitos encontrados em pavimentos asfálticos, tais como trincas por fadiga, e dano por umidade. Diferentes mecanismos existem na literatura para explicar a adesão entre os dois materiais, porém, estes mecanismos podem ser resumidos em três grandes grupos: inter- travamento mecânico, adesão física, e interação química. A ocorrência de mais de um mecanismo simultaneamente parece ser o fenô- meno mais provável, sendo a relevância de cada um dependente das características físicas e químicas do agregado e do ligante asfálti- co. No presente trabalho, dois procedimentos foram utilizados para acessar a adesão entre agregado e ligante. O primeiro constou do cálculo do trabalho de adesão através da energia livre de superfície dos materiais envolvidos e o segundo, da determinação da entalpia de imersão quando soluções de asfalto são postas em contato com o agregado. Todos os materiais usados foram provenientes da biblio- teca de referência do SHRP sendo um pedregulho como agregado, e três diferentes ligantes asfálticos. Os resultados mostraram a capa- cidade do microcalorímetro em detectar possíveis interações químicas na adesão entre agregado e ligante asfáltico, em conjunto com adesão física. A presença de grupos funcionais mais fortemente adsorvidos pela superfície dos agregados justificou os maiores valores de entalpia de imersão para as combinações onde esses grupos se encontravam presentes.

    Abstract Adhesion between the asphalt binder and the aggregate is critical to the performance and durability of asphalt mixtures. According to the literature, distresses mechanisms such as fatigue cracking and moisture induced damage are correlated to the nature and quality of adhesion between these two materials. Different mechanisms already exist to explain

  8. Three Sorts of Naturalism

    OpenAIRE

    Fink, Hans

    2006-01-01

    In "Two sorts of Naturalism" John McDowell is sketching his own sort of naturalism in ethics as an alternative to "bald naturalism". In this paper I distinguish materialist, idealist and absolute conceptions of nature and of naturalism in order to provide a framework for a clearer understanding of what McDowell's own naturalism amounts to. I argue that nothing short of an absolute naturalism will do for a number of McDowell's own purposes, but that it is far from obvious that this is his posi...

  9. Natural gas monthly

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-01-01

    The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the Natural Gas Monthly features articles designed to assist readers in using and interpreting natural gas information.

  10. The Nature of Natural Hazards Communication (Invited)

    Science.gov (United States)

    Kontar, Y. Y.

    2013-12-01

    Some of the many issues of interest to natural hazards professionals include the analysis of proactive approaches to the governance of risk from natural hazards and approaches to broaden the scope of public policies related to the management of risks from natural hazards, as well as including emergency and environmental management, community development and spatial planning related to natural hazards. During the talk we will present results of scientific review, analysis and synthesis, which emphasize same new trends in communication of the natural hazards theories and practices within an up-to-the-minute context of new environmental and climate change issues, new technologies, and a new focus on resiliency. The presentation is divided into five sections that focus on natural hazards communication in terms of education, risk management, public discourse, engaging the public, theoretical perspectives, and new media. It includes results of case studies and best practices. It delves into natural hazards communication theories, including diffusion, argumentation, and constructivism, to name a few. The presentation will provide information about: (1) A manual of natural hazards communication for scientists, policymakers, and media; (2) An up-to-the-minute context of environmental hazards, new technologies & political landscape; (3) A work by natural hazards scientists for geoscientists working with social scientists and communication principles; (4) A work underpinned by key natural hazards communication theories and interspersed with pragmatic solutions; (5) A work that crosses traditional natural hazards boundaries: international, interdisciplinary, theoretical/applied. We will further explore how spatial planning can contribute to risk governance by influencing the occupation of natural hazard-prone areas, and review the central role of emergency management in risk policy. The goal of this presentation is to contribute to the augmentation of the conceptual framework

  11. Interesse e conhecimento em cirurgia refrativa entre estudantes de medicina

    Directory of Open Access Journals (Sweden)

    Kara José Flávio Cotait

    2002-01-01

    Full Text Available Objetivo: Realizou-se um estudo em estudantes da Faculdade de Medicina do ABC a fim de analisar e relacionar a freqüência de usuários de correção óptica, o tipo de vícios de refração, o número de pessoas submetidas à cirurgia refrativa e o conhecimento e interesse por essa operação. Métodos: realizou-se um levantamento entre estudantes de medicina da Faculdade de Medicina do ABC, no período de 19 a 21 de junho de 2000. Foi utilizado um questionário auto-aplicável como instrumento de coleta de dados. Resultados: foi relatado que 62,7% dos estudantes usavam correção óptica, sendo que 53,3% desses apresentavam, como erro de refração, miopia simples ou associada ao astigmatismo. 92,8% do total dos entrevistados já tinham ouvido falar em cirurgia refrativa, contendo apenas 34,2% conhecedores dessa técnica cirúrgica e 17,6% conhecedores dos riscos e complicações pós-operatórios. Entre os 200 estudantes amétropes, 50,5% gostariam de ser submetidos à operação, sendo que 69,0% deles esperavam, através da cirurgia, a cura definitiva. Foi coletado, também, que 51,7% dos entrevistados tiveram a última consulta oftalmológica há menos de 1 ano; 32,0% entre 1 e 3 anos e 15,7% há mais de três anos. Apenas 5 estudantes já tinham sido submetidos à cirurgia refrativa. Conclusão: A maioria dos estudantes de Medicina (62,7% é portador de vício de refração corrigido, sendo os mais freqüentes a miopia simples e a miopia associada a astigmatismo. Há pouco conhecimento e falsa expectativa em relação à cirurgia, sendo que apenas 34,2% entrevistados conhecem o procedimento cirúrgico, 17,6% sabem dos riscos e das complicações e 69,0% esperam cura total. Diante das condições desse estudo, foi constatado que apesar de muitos se interessarem pela cirurgia refrativa, poucos se submeteram a ela, devido, principalmente, em ordem decrescente, a: contra-indicação médica, falta de oportunidade, falta de conhecimento e

  12. Un rideau de fer entre la Russie et l’Union Européenne ?

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    Sophie Ollivier

    2010-06-01

    Full Text Available Il conviendra dans un premier temps de présenter l’historique du Mur de Berlin et de déterminer les raisons de sa chute. À un monde bipolaire succède un monde dominé par les États-Unis. Les anciens membres du Pacte de Varsovie adhèrent à l’OTAN et l’UE. Un ensemble d’accords régit peu à peu les relations entre l’UE et les anciennes républiques de l’URSS, l’UE et la Russie. Avec l’élargissement de l’UE et de l’OTAN la question de l’identité de l’Europe est à l’ordre du jour. Les dissensions et les conflits entre la Russie et les pays anciennement communistes ainsi qu’avec des membres de la CEI, les interventions de l’OTAN et de l’UE dans des pays que la Russie considère comme sa zone d’influence, les rivalités entre Russes et Occidentaux dans des zones stratégiques comme le Caucase créent un climat qui rappelle celui de la guerre froide et les termes de « mur », « rideau  de fer » reviennent souvent dans la bouche des hommes d’État et des commentateurs. Toutefois, malgré de grandes divergences, un processus important de rapprochement a eu lieu. En conclusion, nous poserons la question de la nature eurasienne de la Russie.First we shall give a chronological account of the history of the Berlin Wall and define the reasons for its fall. A bipolar world was succeeded by a world dominated by the United States. The former members of the Warsaw Agreement entered NATO and the EU. A series of agreements progressively fixed the relations between the UE and the former republics of the USSR, the UE and Russia. With the enlargement of the UE, the question of the identity of Europe is on the agenda. The dissensions and the conflicts in countries which Russia considers as belonging to its area of influence, the competition between Russians and Westerners in strategic areas such as the Caucasus, create a climate which reminds onlookers of the climate of the Cold War and the terms « wall »

  13. Marketing de relacionamento entre fabricantes e vendedores do varejo

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    Edson Crescitelli

    2007-12-01

    A influência dos vendedores de varejo no processo de decisão de compra do consumidor afeta diretamente as vendas. Por essa razão, manter bom relacionamento com esse público é essencial para os fabricantes de produtos, especialmente no varejo multimarca. O objetivo neste artigo é analisar como as ações de relacionamento são aplicadas pelos fabricantes e percebidas pelos vendedores varejistas da perspectiva do marketing de relacionamento. Para isso, foi feita pesquisa bibliográfica, além de pesquisa de campo envolvendo entrevistas em profundidade com fabricantes e vendedores de redes varejistas do setor de eletrodomésticos. Muito embora sejam rotuladas de ações de relacionamento, a maior parte das ações praticadas pelos fabricantes junto aos vendedores do varejo consiste em campanhas promocionais de vendas. Essas ações apresentam efeito efêmero e são aplicadas para resolução de problemas pontuais de vendas pontuais, o que não contribui para a formação de relacionamento mais consistente entre fabricantes e vendedores. Os resultados a que se chegou neste estudo indicaram que o relacionamento entre fabricantes e vendedores não é ruim, mas está distante do conceito de marketing de relacionamento. Na conclusão são apresentadas possibilidades para se estabelecer um programa de relacionamento junto aos vendedores varejistas. Palavras-chave: Marketing de relacionamento, varejo e venda pessoal Abstract Sales are directly affected by the influence of retailing sellers in the process of consumer purchase decision. For this reason, a good relationship with them is essential to manufacturers mainly in the retailing. The objective of this work is to analyze how relationship activities are developed by manufacturers and how they are perceived by sellers from the perspective of relationship marketing. Therefore, a bibliographic research was made complemented by a field research where in depth interviews were taken with electronic appliances

  14. Resiliencia en estudiantes universitarios. Un estudio comparado entre carreras

    Directory of Open Access Journals (Sweden)

    Juan Francisco Caldera Montes

    2016-07-01

    Full Text Available El presente trabajo tuvo como propósito conocer el nivel de resiliencia en una muestra de estudiantes universitarios de una institución de educación superior pública del estado de Jalisco, México. Además de ello, se analizó la relación y diferencia entre la resiliencia y las variables de sexo, edad y nivel socioeconómico. Para medir la variable de interés se utilizó la Escala de Resiliencia desarrollada por Wagnild y Young (1993 en su versión traducida y adaptada al español por Heilemann, Lee y Kury (2003, la cual está constituida por 25 reactivos en escalamiento tipo Likert. Los resultados muestran niveles altos de resiliencia en los estudiantes universitarios, no encontrándose diferencias significativas entre las variables carrera, sexo y edad de los estudiantes. Se concluye que la resiliencia alta es una característica muy generalizada en la mayoría de los estudiantes universitarios. Finalmente, se sugiere la ampliación de la línea de investigación con otros tamaños muestrales y otro tipo de carreras, así como la ejecución de trabajos que relacionen a la resiliencia con otras variables psicosociales no contempladas en el estudio. Abstract This paper aimed to know the level of resilience from a sample of university students in a public institution of education in the state of Jalisco, México. In addition to that, the relationship and difference between resilience and the variables of gender, age and socioeconomic status were analyzed. For this research, it was used the Resilience Scale developed by Wagnild and Young (1993 in the version translated and adapted to Spanish by Heilemann, Kury and Lee (2003, which consists of 25 reagents in the Likert scaling. This was used to measure the variable of interest. The results show high levels of resilience in university students and there were no significant differences between the career, sex and age variables. It was concluded that high resilience is a very generalized

  15. Bases del intercambio entre las sociedades norperuanas y surecuatorianas: una zona de transición entre 1500 A.C. y 600 D.C

    Directory of Open Access Journals (Sweden)

    1993-01-01

    Full Text Available BASES DE L'ECHANGE ENTRE LES SOCIETES NORD-PERUVIENNES ET SUD-EQUATORIENNES : UNE ZONE DE TRANSITION ENTRE 1500 AV. J.C. ET 600 AP. J.C. Cet article est le fruit d’une tentative de coopération entre des chercheurs qui travaillent en Équateur et au Pérou, pour relier les deux aires culturelles nettement différenciées, nord-andine et centre-andine, à partir de la définition et de l’étude d’une zone de transition, localisée entre le Río Jubones dans le sud de l'Équateur et le Río Olmos dans le nord du Pérou, entre environ 1500 av. J.C. et 600 ap. J.C. El artículo es resultado de un intento de cooperación entre investigadores que trabajan el Ecuador y el Perú para vincular las dos áreas culturales marcadamente diferenciadas, norandina y centroandina, a partir de la definición y estudio de una zona de transición, localizada entre el río Jubones, al sur de Ecuador y el Río Olmos, al norte de Perú, entre aproximadamente 1500 AC y 600 DC. BASIS OF THE EXCHANGE BETWEEN NORTH PERUVIAN AND SOUTH ECUATORIAN SOCIETIES: A TRANSITIONAL ZONE BETWEEN 1500 B.C. AND 600 A.C. This paper is a collaborative effort by researchers working in Ecuador and Peru, to explore the relationship between two clearly differentiated cultural areas (North and Central Andes on the basis of a definition and study of the prehistory transitional zone located between Río Jubones in Southern Ecuador and Río Olmos in Northern Peru between 1500 B.C. and 600 A.C.

  16. Produits locaux entre nature et culture : de la ferme voisine au terroir. Entretien avec Laurence Bérard

    Directory of Open Access Journals (Sweden)

    Virginie Amilien

    2005-05-01

    Full Text Available V.A. : Laurence Bérard, vous représentez la moitié du célèbre duo Bérard et Marchenay, dont articles et ouvrages sur produits de terroir en France sont incontournables, et c’est à ce titre que vous nous accordez un entretien aujourd’hui pour le numéro sur les produits alimentaires locaux du journal Anthropology of Food. Alors je commencerais par la traditionnelle question : si je vous dis produits locaux, à quoi pensez-vous ?  L.B. : Produits locaux… et pas de produits de terroir…I.T. : Non j...

  17. LE CINÉMA FRANÇAIS EN ROUMANIE DANS L’ENTRE-DEUX-GUERRES

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    Georgiana MEDREA

    2013-05-01

    Full Text Available Avant même d’aborder la nature des films français importés en Roumanie dans l’entre-deux-guerres, il convient de situer cette production cinématographique dans l’ensemble de celles présentes sur le marché roumain, ce que permettent documents et articles critiques contemporains. La diversité des mises en scène et des acteurs, la variété des sujets traités plaisent à un large public. La plus grande place que connaît le cinéma français en Roumanie dans les années trente est sans doute due,également, à la présence, dans le monde cinématographique français, d’artistes roumains qui manifestent un souci d’intégration dans une culture d’accueil qu’ils admirent. Les exemplesde coopérations franco-roumaines sont nombreuses, jusqu’à se manifester parfois sous la forme de coproductions

  18. EL INTÉRPRETE FELIPILLO ENTRE INCAS Y CONQUISTADORES

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    Jochen Plötz

    2016-01-01

    Full Text Available El artículo busca contribuir a la investigación de los papeles atribuidos al mediador lingüístico y, por extensión, transcultural, como son los de traidor, el que no dice todo lo que sabe persiguiendo intereses propios, y otros más. Se establecen unas pautas que caracterizan las situaciones comunicativas conflictivas a lo largo de la historia. Asimismo, se propone una línea de investigación traductológica, interesada en la realización de la mediación lingüística misma y sus circunstancias, como aporte a la historia de la traducción. El caso al que se aplica este programa en el presente artículo es el enfrentamiento entre los incas y los conquistadores europeos en el Perú, en el cual actuaron unos intérpretes indígenas sobre los que se ha producido y se sigue produciendo toda una gama de proyecciones y atribuciones.

  19. Incrementando Las Relaciones Comerciales Entre Colombia Y China

    Directory of Open Access Journals (Sweden)

    Jaime Rafael Ahcar Olmos

    2008-10-01

    Full Text Available Después de las reformas de finales de los años setenta, China consiguió su despegue económico a tal punto que, en la actualidad, se consolida como uno de los mercados más importantes del mundo, recibiendo la atención de investigadores y hombres de negocios a lo largo del planeta. En Colombia existen pocos estudios que hayan explorado las relaciones comerciales con China; en tal sentido, el presente artículo ofrece una amplia revisión de fuentes estadísticas y referencias bibliográficas, dando luces sobre las características y los factores que afectan las relaciones comerciales bilaterales. Los resultados muestran que, si bien China es un valioso proveedor de mercancías para Colombia, las exportaciones hacia ese país aún se encuentran por debajo de su potencial, y se genera un déficit comercial enorme. También muestra que las exportaciones colombianas hacia China se hallan concentradas en unos pocos productos y que dado el tamaño y potencialidad de esta economía, se deberían comenzar negociaciones comerciales que busquen la firma de un acuerdo de libre comercio que permita incrementar el comercio entre ambos países.

  20. Caminhos entre a literatura e a história

    Directory of Open Access Journals (Sweden)

    Bosi Alfredo

    2005-01-01

    Full Text Available O ARTIGO resume o itinerário do autor como historiador da Literatura Brasileira, teórico de poesia e estudioso de nossa formação cultural. Os momentos iniciais desse percurso recebem particular atenção: o estudo da Estética de Croce, o conhecimento da filosofia marxista de Gramsci, a influência do existencialismo cristão no final dos anos de 1950 e o engajamento na política de esquerda no Brasil dos anos de 1960 e 1970. Como docente de Literatura Italiana, o autor escreveu teses sobre Pirandello e Leopardi, ambas inéditas. Trabalhando no campo da história literária, na esteira da obra de Otto Maria Carpeaux, examinou as relações dialéticas entre ideologia e poesia e ideologia e narrativa, o que lhe abriu caminho para o seu conceito de literatura como resistência. Ao elaborar a Dialética da Colonização, dedicou-se ao estudo das tensões que marcam a história das ideologias no Brasil.

  1. Las parroquias rurales de Buenos Aires entre 1730 y 1820

    Directory of Open Access Journals (Sweden)

    Mar\\u00EDa Elena Barral

    2004-01-01

    Full Text Available Este artículo estudia el proceso de construcción de las parroquias rurales de Buenos Aires a lo largo de casi un siglo. Analiza esta gradual extensión de la red parroquial desde 1730 –la creación de los primeros curatos– hasta la década de 1820 cuando la Iglesia experimentaría cambios decisivos en su configuración como consecuencia de las reformas rivadavianas. El trabajo apunta a dar cuenta de los ritmos diferenciales con que se organizó la red parroquial en distintas zonas de la campaña bonaerense y a identificar los momentos más relevantes de los cambios en la misma. Asimismo examina el clero rural: su peso cuantitativo según áreas y períodos, su composición interna y algunos rasgos de las gestiones parroquiales. En especial considera aquellas acciones que los eclesiásticos exhibían entre sus mayores méritos y servicios, como modo de reconocer lo que –en la época– se esperaba de su actividad pastoral en la cura de almas

  2. Consecuencias del aprendizaje organizativo en las relaciones comerciales entre empresas

    Directory of Open Access Journals (Sweden)

    José A. López Sánchez

    2011-06-01

    Full Text Available El objetivo principal de este estudio es analizar la influencia del aprendizaje organizativo (AO sobre la satisfacción y la lealtad en las relaciones comerciales entre empresas. Para ello se plantea un marco teórico donde se adopta como unidad de análisis la relación diádica que mantienen las empresas fabricantes con su principal distribuidor. En el análisis de los datos se emplean sistemas de ecuaciones estructurales con una muestra de empresas españolas. Los resultados empíricos obtenidos aportan evidencias acerca de que el AO del fabricante es un antecedente de los resultados alcanzados en los intercambios relacionales. Así, el mayor grado de AO de la empresa fabricante incide de modo directo en el grado de satisfacción del distribuidor principal y también actúa de modo indirecto sobre su grado de lealtad. Se corrobora además que dicho AO potencia de un modo directo los resultados empresariales del fabricante. Las limitaciones del estudio son las típicas asociadas al uso de la investigación basada en encuesta. Por último, la varianza del método común no fue un problema en este estudio.

  3. Impulso a la igualdad de oportunidades entre hombres y mujeres

    Directory of Open Access Journals (Sweden)

    Eliza Muñoz Catalán

    2016-06-01

    Full Text Available El necesario impulso que se le debe dar a la anhelada igualdad de género entre hombres y mujeres en nuestra sociedad actual, resulta objeto de análisis en la presente obra, a través de la cual, la profesora Iglesias Crespo nos adentra en la contextualización de las políticas de igualdad desde su fundamentación normativa a nivel internacional, comunitario, estatal y autonómico hasta una legislación como la presente que se encuentra marcada por la profunda crisis social, económica e incluso de valores que estamos sufriendo desde hace ya varios años; así como la misma analiza cuál es el alcance jurídico de las diferentes estrategias de promoción para la igualdad efectiva de mujeres y hombres, ya sea a través de medidas de acción positiva, estrategias como la “mainstreaming”, o planes de igualdad de oportunidades.

  4. espacial de los flujos entre 1988 y 2006

    Directory of Open Access Journals (Sweden)

    Daniela Vono

    2007-01-01

    Full Text Available El objetivo de este artículo es el de describir y analizar las características demográficas y territoriales del retorno durante el período entre 1988 y 2006 de aquellos inmigrantes nacidos en España que se han dirigido a algún país de América Latina y de sus descendientes, así como las características de los españoles residentes en países latinoamericanos a partir de los últimos censos de población. Se trabaja con los datos disponibles de las Estadísticas de Variaciones Residenciales (EVR, elaboradas por el INE, para analizar las características de los movimientos de retorno en todo el territorio español y a nivel municipal, por un lado, y, para el estudio de los españoles residentes en América Latina se ha explorado los datos censales disponibles a través del proyecto Investigación de la Migración Internacional en América Latina y el Caribe (IMILA del Centro Latinoamericano y Caribeño de Demografía (CELADE.

  5. Relaciones entre estilos de amor y violencia en adolescentes

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    Iris Xóchitl Galicia Moyeda

    2013-01-01

    Full Text Available De acuerdo a diversas evidencias, la manera en que los y las ado- lescentes establecen sus relaciones amorosas podría estar asociada con la violencia producida y recibida en el noviazgo. Para esclarecer cómo se manifiesta esta relación en una muestra de 105 mujeres y 93 hombres, con una edad entre los 13 y los 15 años, en el Estado de México, se aplicaron dos herramientas: la Escala de Actitudes Amo- rosas (EAA (Hendrick & Hendrick, 1986 y el Cuestionario sobre Violencia en el Noviazgo (CVN. La evidencia indica que los estilos amorosos predominantes fueron el Storge y el Eros. Los hombres cuyo estilo es Ludus tienen más posibilidades de recibir violencia,en tanto que las mujeres cuyo estilo predominante es el Ágape reciben y ejercen más violencia en sus relaciones amorosas. Dado que este estilo es poco frecuente, se sugiere que en las instituciones educativas se promuevan relaciones de noviazgo más igualitarias.

  6. CULTURAS ACADÉMICAS: ENTRE REINVENCIÓN Y CONTRABANDO

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    Kathya Araujo

    2015-01-01

    Full Text Available Sobre la base del análisis de una historia personal de desplazamiento entre academias (peruana y chilena, y la reinvención y el contrabando que toda migración supone, este artículo argumenta de qué manera frente a las nuevas modalidades de evaluación (los rankings, la búsqueda de isomorfismo de las estructuras argumentativas y las formas lingüísticas o incluso la ficción de sociologías globales, se mantienen vivas culturas académicas particulares. En este marco, la reflexión se organiza mostrando que detrás de la singularidad de los estilos intelectuales, formas de sociabilidad profesionales e incluso formas lingüísticas de cada una de ellas, lo que se revela es la manera en la que cada cultura académica local responde desde tradiciones diversas a desafíos político sociales distintos y con ello su rol de compromiso público y crítico.

  7. Diferencias cualitativas entre experiencias tutoriales para opciones de aprendizaje universitario

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    Ángel J. LÁZARO MARTÍNEZ

    2008-01-01

    Full Text Available Se analiza la tutoría como elemento básico de la excelencia educativa, resaltando su carácter nuclear en todo proceso formativo institucionalizado. Se constata la relación entre los procesos educativos, la orientación y la tutoría, desde el nuevo enfoque de la auténtica orientación. En el contexto universitario se debaten sus competencias, destacando que, desde sus orígenes, la tutoría ha constituido el sentido de la función y el quehacer de la finalidad y optimización de la formación universitaria, tanto en la búsqueda del saber como en la pretensión de aplicación social. Esta situación aboca en el análisis de las opciones de la acción tutorial en la Universidad, sus modalidades y sus posibilidades de intervención, y se plantean, de forma más concreta, recogiendo las experiencias destacables en el ámbito universitario, las estrategias organizativas y de desarrollo en aulas y situaciones individualizadas.

  8. O consumo de drogas entre os estudantes adolescentes

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    Denis da Silva Moreira

    1996-12-01

    Full Text Available Este trabalho de pesquisa aborda os aspectos relacionados ao consumo de drogas entre os estudantes de 7º e 8º séries, na faixa etária de 12 a 15 anos, das escolas públicas e particulares da cidade de Alfenas, no ano de 1993. As drogas mais oferecidas e mais usadas foram os solventes voláteis ou inalantes, seguidos da maconha. O local onde a oferta é mais freqüente são os lugares públicos ( ginásios de show, bares, casa de jogos, parques e outros. Constatou-se que 5,5% dos entrevistados já fizeram uso de drogas, sendo motivados pela curiosidade e influência dos amigos. Praticamente todos os estudantes já receberam, através da família e/ou escola, orientação sobre drogas. A escola é a instituição que possui a maior clientela de risco às drogas, ou seja, crianças, adolescentes e jovens e por ser uma das responsáveis na educação e em passar Cultura é a que possui maioras condições de executar um programa de prevenção às drogas.

  9. Breast reconstruction - natural tissue

    Science.gov (United States)

    ... flap; TRAM; Latissimus muscle flap with a breast implant; DIEP flap; DIEAP flap; Gluteal free flap; Transverse upper gracilis flap; TUG; Mastectomy - breast reconstruction with natural tissue; Breast cancer - breast reconstruction with natural tissue

  10. Natural short sleeper

    Science.gov (United States)

    Sleep - natural short sleeper ... 7 to 9 hours of sleep each night. Short sleepers sleep less than 75% of what is normal for their age. Natural short sleepers are different from people who chronically do ...

  11. Vermont Natural Resources Atlas

    Data.gov (United States)

    Vermont Center for Geographic Information — The purpose of the�Natural Resources Atlas�is to provide geographic information about environmental features and sites that the Vermont Agency of Natural Resources...

  12. Natural Weathering Exposure Station

    Data.gov (United States)

    Federal Laboratory Consortium — The Corps of Engineers' Treat Island Natural Weathering Exposure Station is a long-term natural weathering facility used to study concrete durability. Located on the...

  13. Um estudo sobre as relações entre os conflitos interpessoais e o bullying entre escolares

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    Loriane Trombini Frick

    2013-01-01

    Full Text Available A pesquisa que deu origem a este estudo teve por objetivo analisar as relações entre os estilos de resolução de conflitos adotados pelos professores e os modos de agir dos alunos perante conflitos entre pares e a possível incidência de bullying, em duas classes dos anos iniciais do Ensino Fundamental de duas escolas públicas de um município do interior de São Paulo. A metodologia utilizada caracterizou-se por uma abordagem quantitativa e qualitativa, aproximando-se de um estudo de caso. Para a coleta de dados, realizaram-se observações nas duas classes, preencheu-se uma ficha para caracterização dos ambientes sociomorais e aplicou-se dois questionários aos alunos: um com histórias hipotéticas de conflitos, baseado em Vicentin; outro sobre bullying, inspirado nos instrumentos de Olweus e de Ortega, Mora-Merchán e Mora. Evidenciou-se que as relações interpessoais estabelecidas na escola, em especial na sala de aula, formam um determinado ambiente sociomoral e influenciam no modo como os alunos interagem e resolvem conflitos, bem como, na possível prática do bullying.Abstract The research aimed to analyzing the relationship between the styles of conflict resolution adopted by the teachers and the students' ways of acting facing conflicts between peers and the possible incidence of bullying in two classes of the early years of two elementary public schools in a city in the interior of São Paulo state. The methodology is quantitative and qualitative approach, which approximates a case study. For data collection, observations were conducted in two classrooms, a form was filled up for characterization of socio moral environments and two questionnaires were applied to students: one with stories of hypothetical conflicts based on Vicentin; another on bullying, inspired in Olweus and Ortega-Mora and Mora Merchán’s instruments. It became evident that interpersonal relationships established in school, especially in the classroom

  14. Natural gas annual 1995

    International Nuclear Information System (INIS)

    1996-11-01

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1995 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1991 to 1995 for each Census Division and each State. Annual historical data are shown at the national level

  15. Natural gas annual 1993

    International Nuclear Information System (INIS)

    1994-01-01

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1993 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. Tables summarizing natural gas supply and disposition from 1989 to 1993 are given for each Census Division and each State. Annual historical data are shown at the national level

  16. Natural gas annual 1991

    International Nuclear Information System (INIS)

    1992-01-01

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1991 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. Tables summarizing natural gas supply and disposition form 1987 to 1991 are given for each Census Division and each State. Annual historical data are shown at the national level

  17. Natural gas for vehicles

    International Nuclear Information System (INIS)

    Prieur, A.

    2006-01-01

    Following a decade-long upsurge in the use of natural gas in the energy sector (heating and especially electricity), new outlets for natural gas are being developed in the transport sector. For countries endowed with substantial local resources, development in this sector can help reduce oil dependence. In addition, natural gas is often used to reduce pollution, particularly in cities

  18. Natural gas annual 1991

    International Nuclear Information System (INIS)

    1993-01-01

    The Natural Gas Annual 1991 provides information on the supply and disposition of natural gas to a wide audience including industry, consumers Federal and State agencies, and education institutions. This report, the Natural Gas Annual 1991 Supplement: Company Profiles, presents a detailed profile of selected companies

  19. Naturalisms and religion

    NARCIS (Netherlands)

    Drees, Willem

    1997-01-01

    Such terms as materialism, naturalism, and near synonyms evoke strong negative reactions among many believers. However, the notion of naturalism has various meanings; implications for religion differ for the several varieties of naturalism. In this paper I analyze epistemological and ontological

  20. NATURAL GAS TRANSPORTATION

    OpenAIRE

    Stanis³aw Brzeziñski

    2007-01-01

    In the paper, Author presents chosen aspects of natural gas transportation within global market. Natural gas transportation is a technicaly complicated and economicly expensive process; in infrastructure construction and activities costs. The paper also considers last and proposed initiatives in natural gas transportation.

  1. O cinema do futuro: Entre novas e tradicionais tecnologias, entre a morte e a reinvenção

    Directory of Open Access Journals (Sweden)

    Julio Bezerra

    2010-03-01

    Full Text Available O cinema não é mais a experiência audiovisual matriz em nossa “sociedade das imagens”. Essa enorme rede heterogênea que vai se constituindo no terreno da produção e circulação de imagens-sons tem nos mostrado que é preciso mudar a nossa percepção do lugar do cinema entre os demais dispositivos. O objetivo deste texto é pensar o cinema em suas relações com o que vem sendo chamado de novas mídias. Nossa posição se aproxima de certa maneira de Phillipe Dubois: afirmando o cinema como uma espécie de referência fundante para todo o audiovisual sem ressentimentos e/ou opiniões fechadas com relação às novas tecnologias. Neste caminho, passamos invariavelmente por algumas falsas questões, pela melancólica idéia da “morte do cinema”, pelo surgimento de uma novíssima cinefilia digital e rizomática, por um cinema contemporâneo pra lá de impuro.

  2. Determinantes de la precarización laboral en Argentina entre 2003-2013. Entre los cambios y las continuidades

    Directory of Open Access Journals (Sweden)

    Marcelo Delfini

    2016-06-01

    Full Text Available El crecimiento económico experimentado por Argentina desde 2003 ha tenido su correlato en la mejora de los indicadores laborales. No obstante, la precarización laboral se ha mantenido, luego de una baja importante, hasta 2007, en valores muy elevados. Partiendo de la idea central que la precarización constituye para el capital una reducción de costos, el objetivo de este artículo es dar cuenta de los determinantes de la informalidad entre los trabajadores asalariados y establecer continuidades y cambios durante 2003 y 2013. Para ello, utilizamos una metodología cuantitativa con fuentes secundarias de información, dde acuerdo con las cuales realizamos dos tipo de análisis: el primero de carácter descriptivo, a partir del cual se busca dar cuenta de las características del mercado de trabajo argentino durante 1990 y 2013, y el segundo se realiza por medio de una regresión logística binomial, que permite acercarnos a los determinantes de la precarización de las condiciones de trabajo. En este sentido, se pudo observar que durante 2003 y 2013 se consolidó una precarización laboral, cuyos determinantes no lograron modificarse sustancialmente durante los años de referencia

  3. Las fuentes estadísticas para el estudio del comercio exterior mexicano entre 1920 Y 1947

    Directory of Open Access Journals (Sweden)

    Isabel Avella Alaminos

    2011-06-01

    Full Text Available En este artículo la autora identifica, examina y confronta las principales series estadísticas disponibles para estudiar el valor del comercio exterior de México entre 1920 y 1947, cuando tuvo lugar la transición del país hacia el modelo de sustitución de importaciones. A partir de ello, establece el porqué de las diferencias que existen entre dichas series, así como sus limitaciones, con el fin de que los estudiosos del tema sepan las implicaciones de trabajar con estas fuentes.In this article the author identifies, examines and compares the main statistical data which is available to study the value of Mexico's foreign trade between 1920 and 1947, a period when the country entered the import substitution era. Based on this analysis, the author establishes the origin of the differences between the series, and also points out its limitations, so that the researchers interested in the topic are aware of the nature of the data they must deal with.

  4. Etude empirique de la relation entre le système monétaire et financier et la croissance économique

    OpenAIRE

    Ouni, Moez; Nejadan-Zarin, Milad

    2011-01-01

    La problématique de la relation entre le système financier, et de ses effets, et la croissance économique reste une question controversée. Elle est sujet d’un débat animé entre les différentes tendances économiques. L’objectif de la présente thèse est d’apporter des éclairages sur la nature de ladite relation. Pour atteindre cet objectif, Nous avons considéré le système financier composé du système bancaire, y compris la banque centrale, et de la bourse de valeurs, et la croissance économique...

  5. Natural gas marketing II

    International Nuclear Information System (INIS)

    Anon.

    1988-01-01

    This book covers all aspects of gas marketing, from the basic regulatory structure to the latest developments in negotiating agreements and locating markets. Topics include: Federal regulation of the gas industry; Fundamentals of gas marketing contracts; FERC actions encouraging competitive markets; Marketing conditions from the pipelines' perspective; State non-utility regulation of natural gas production, transportation, and marketing; Natural gas wellhead agreements and tariffs; Natural gas processing agreements; Effective management of producer's natural gas contracts; Producer-pipeline litigation; Natural gas purchasing from the perspective of industrial gas users; Gas marketing by co-owners: problems of disproportionate sales, gas balancing, and accounting to royalty owners; Alternatives and new directions in marketing

  6. Nature in Preschool

    DEFF Research Database (Denmark)

    Husted, Mia; Frøkjær, Thorleif

    Nature and nature phenomena’ has formed a specific curriculum theme in Danish preschool since early childhood curriculum was prescribed by law in 2004. However, recent evaluations show that the implementation of an early childhood curriculum has not produced an increased pedagogical focus...... on ‘nature and nature phenomena’ in preschools (EVA 2012). This finding, along with an increased political interest in goals and measurable outcome of early childhood curriculum (Broström 2012), will be the starting point in our ambition to carry out a more thorough qualitative investigation into links...... between preschool teachers’ understanding and interest in teaching nature and the rather poor evaluation....

  7. Os diferentes contratos de trabalho entre trabalhadores qualificados brasileiros.

    Directory of Open Access Journals (Sweden)

    Marcia Carvalho de Azevedo

    2014-06-01

    Full Text Available Ao longo das últimas décadas, as relações de trabalho têm se modificado de forma contínua na direção de contratos mais flexíveis vis-à-vis relações de trabalho mais estáveis e de longo prazo. Essas transformações também têm atingido o mercado de trabalho brasileiro, ainda que este tenha características distintas das economias mais desenvolvidas. No Brasil, as relações de trabalho sempre tiveram um forte componente de flexibilidade, uma vez que o emprego formal e o informal são igualmente importantes na economia do país. Apesar da informalidade presente no cenário brasileiro, trabalhadores qualificados brasileiros mantiveram vínculos de trabalho estáveis, com contratos CLT, ao longo da segunda metade do século passado. Entretanto, esse panorama tem sido modificado nas últimas décadas. Apesar da constatação dessas mudanças no mercado de trabalho, pesquisas que investigam a disseminação de diferentes tipos de contrato de trabalho no mercado brasileiro são escassas. Dados referentes a profissionais qualificados são ainda mais raros. Tendo esse cenário como pano de fundo, esta pesquisa tem como objetivo identificar os diferentes tipos de contrato de trabalho existentes entre trabalhadores qualificados no Brasil. Para isso, discute os resultados de uma pesquisa empírica e apresenta, com base na literatura e nos dados de 47 entrevistas com trabalhadores, 15 tipos de contrato de trabalho que se distinguem do padrão CLT. Os resultados mostram que, dada essa diversidade, as relações flexíveis de trabalho não podem ser tratadas como um processo homogêneo. Os dados também retratam uma realidade preocupante. Podemos dizer que existe um descompasso dentro do contexto brasileiro entre as relações de trabalho atuais e o ambiente no qual elas estão inseridas. A sociedade brasileira e a legislação trabalhista estão estruturadas com base nas relações de trabalho formais. As organizações muitas vezes não sabem

  8. Learning from nature: Nature-inspired algorithms

    DEFF Research Database (Denmark)

    Albeanu, Grigore; Madsen, Henrik; Popentiu-Vladicescu, Florin

    2016-01-01

    .), genetic and evolutionary strategies, artificial immune systems etc. Well-known examples of applications include: aircraft wing design, wind turbine design, bionic car, bullet train, optimal decisions related to traffic, appropriate strategies to survive under a well-adapted immune system etc. Based......During last decade, the nature has inspired researchers to develop new algorithms. The largest collection of nature-inspired algorithms is biology-inspired: swarm intelligence (particle swarm optimization, ant colony optimization, cuckoo search, bees' algorithm, bat algorithm, firefly algorithm etc...... on collective social behaviour of organisms, researchers have developed optimization strategies taking into account not only the individuals, but also groups and environment. However, learning from nature, new classes of approaches can be identified, tested and compared against already available algorithms...

  9. Condicoes dentarias entre adultos brasileiros de 1986 a 2010

    Directory of Open Access Journals (Sweden)

    Sergio do Nascimento

    2013-12-01

    Full Text Available OBJETIVO: Identificar tendências do padrão da cárie dentária em adultos brasileiros. MÉTODOS: Foram utilizados dados provenientes de levantamentos epidemiológicos realizados pelo Ministério da Saúde nos anos de 1986, 2003 e 2010. A experiência de cárie, expressa pelo índice CPOD (dentes permanentes cariados, perdidos e obturados, e a saúde dentária, expressa pelo índice OH-D (dentes hígidos + obturados relativo ao número de dentes funcionais, foram comparadas em amostras aleatórias de residentes de 35 a 44 anos de idade em cada região brasileira. As diferenças nas condições dentárias entre os anos foram estimadas por meio da razão dos valores dos índices, empregando-se análise de regressão de Poisson ajustada pela idade. RESULTADOS: Houve reduções no índice CPOD e aumento no índice OH-D em todas as regiões no período de 1986 a 2010. A região Norte, que tinha o pior padrão em 1986, apresentou o maior ganho em termos de dentição funcional. CONCLUSÕES: Tem ocorrido uma transição da saúde bucal para melhor nos adultos brasileiros. É plausível que a adição de flúor à água e ao creme dental, maior incorporação de serviços restauradores e a melhoria nos indicadores de desenvolvimento humano decorrentes de políticas públicas estejam relacionados a essa melhora.

  10. Locos entre cuerdos, cuerdos en ambientes patológicos

    Directory of Open Access Journals (Sweden)

    Rodríguez-Arias Palomo, José Luis

    2013-10-01

    Full Text Available Mental Health moves within a territory of uncertain boundaries: weather a behavior is considered healthy or sick depends on factors such as the historical moment, the culture and society in which the diagnosis is made or simply the professional’s ideology on the matter. In this paper, the borders between madness and sanity will be explored from the point of view of Radical Constructivism (Watzlawick, 1988. The classification criteria currently used in Mental Health units will be questioned through a series of examples which reveal their instability and fuzziness. The thesis behind this debate is that the autonomy of the patient should be considered precisely in this context of relativity. Though “mad”, they have equal rights to sane people to decide over their own existence and their own ways of leading their lives.La Salud Mental se mueve en un territorio con límites imprecisos: la consideración de un comportamiento como sano o enfermo depende del momento histórico, de la sociedad y la cultura en la que se produce o, sencillamente, de la ideología del profesional que califica ese comportamiento. Desde la perspectiva del Constructivismo Radical se exploran estos límites entre la locura y la cordura y se cuestionan los criterios de clasificación al uso en los Servicios de Salud Mental a través de una serie de ejemplos, que ponen de relieve la inestabilidad de estos y la oscuridad de los mismos. La idea que atraviesa este debate es que la autonomía de los pacientes cobra protagonismo, precisamente, en la relatividad del diagnóstico en Salud Mental, ya que, aunque “locos”, tienen igual derecho que los cuerdos a decidir sobre su propia existencia y su propio estilo de vivir.

  11. Entre mitos y realidades: ciudades mexicanas que concentran clase creativa

    Directory of Open Access Journals (Sweden)

    Jaime Sobrino

    2016-01-01

    Full Text Available El propósito del presente documento consiste en realizar un estudio exploratorio sobre los atributos demográficos y económicos de las ciudades de México en donde se concentra la clase creativa, es decir, aquel segmento de la oferta ocupacional en el mercado urbano de trabajo que se compone por profesionistas, profesores universitarios, investigadores, trabajadores del arte, espectáculos y deportes. El término clase creativa fue propuesto por Richard Florida (2002, y a este segmento de la población ocupada se le ha dado una connotación de ventaja competitiva para la ciudad en donde reside, de tal manera que se ha tratado de comprobar la relación entre el desempeño económico local y la presencia de dicha clase. Aquí no se utiliza a la clase creativa como variable explicativa del comportamiento económico local. Más bien se busca aportar elementos sobre las características de las ciudades con mayor intensidad de clase creativa en su estructura ocupacional. Para alcanzar el propósito se realiza un modelo de regresión logística multivariada. Los resultados permiten concluir que las ciudades donde se concentraba la clase creativa en 2010 eran preferentemente capitales estatales y/o con baja participación de la producción manufacturera en su estructura económica. Asimismo, los ocupados en la clase creativa tuvieron mayor tasa de migración interna con respecto a la población ocupada total. Los lugares de origen y destino de la migración creativa fueron ciudades especializadas, ambas en este tipo de ocupados.

  12. O PROTAGONISMO INDÍGENA ENTRE CAMPOS MULTI E INTERDISCIPLINARES

    Directory of Open Access Journals (Sweden)

    Lígia Duque Platero

    2014-12-01

    Full Text Available O livro Missões, Militância Indigenista e Protagonismo Indígena é uma coletânea de artigos que orbitam ao redor das temáticas Missões religiosas e conversão religiosa, educação, terras e reterritorialização, sempre associados à questão do protagonismo indígena. Os artigos escolhidos para esta coletânea foram trabalhos apresentados nas XIII Jornadas Internacionais sobre as Missões Jesuíticas, realizada em Dourados, no Mato Grosso do Sul, de 30 de agosto a 03 de setembro de 2010. Os organizadores são a doutora em Antropologia e Teologia Graciela Chamorro e o doutor em História Protasio Paulo Langer. Esta coletânea contém dezessete artigos e uma entrevista. Os artigos são provenientes de diversas disciplinas e alguns deles são interdisciplinares. Do campo científico, há artigos da História, Etno-história, Etno-musicologia, Antropologia, Sociologia e Geografia. O livro também contém artigos da área de Teologia. A proposta da coletânea é a reunião de artigos que expressam as intrincadas relações interculturais e interpolíticas estabelecidas entre missionários, indigenistas e os povos indígenas na América do Sul.

  13. ANÁLISE DESCRITIVA: COMPARAÇÃO ENTRE METODOLOGIAS

    Directory of Open Access Journals (Sweden)

    Valéria Paula Rodrigues Minim

    2010-06-01

    Full Text Available Métodos sensoriais descritivos são de grande importância na indústria de alimentos para definir a qualidade sensorial de um produto. A análise descritiva quantitativa (ADQ é um método muito usado para identificar e quantficar os atributos sensoriais de alimentos. As etapas para realização da ADQ são: recrutamento e pré-seleção dos candidatos à julgadores, levantamento e descrição dos atributos, treinamento e seleção final dos julgadores e avaliação dos produtos. Visto que a ADQ requer treinamento longo dos julgadores, uma nova metodologia descritiva por ordenação (ADO foi desenvolvida recentemente , na qual algumas etapas são semelhantes à ADQ, porém o treinamento e a seleção final dos julgadores não acontecem e a avaliação dos produtos é realizada por ordenação da intensidade dos atributos, sendo a ADO um método mais econômico e rápido. O presente trabalho comparou a nova metodologia descritiva (ADO com o método tradicionalmente utilizado, a ADQ, por meio da descrição sensorial de quatro marcas de requeijão cremoso. Os atributos que caracterizaram os produtos foram: cor, aroma e sabor característicos, gosto doce, gosto salgado, sabor de ranço, consistência e viscosidade. Observou-se correlação significativa (p<0,05 entre as metodologias para 62,5% dos atributos avaliados. Assim, quando o objetivo é identificar diferenças sensoriais mais acentuadas a ADO pode ser usada em substituição a ADQ.

  14. Relaciones entre autoestima y estresores percibidos en estudiantes universitarios

    Directory of Open Access Journals (Sweden)

    Ramón G. Cabanach

    2014-06-01

    Full Text Available Siguiendo la línea de los trabajos que inciden en el papel de los recursos personales como factores de protección frente al estrés, la presente investigación pretende analizar la relación entre la autoestima y la percepción de estresores académicos en el contexto universitario. En concreto, analizamos en qué medida los niveles de autoestima (alto, medio y bajo influyen diferencialmente en el grado en que el estudiante valora como amenazantes diversas circunstancias propias del día a día académico. Se evalúan también qué factores de este contexto son los que el estudiante percibe como más estresantes. Participaron en el estudio 465 estudiantes de Fisioterapia de diversas universidades españolas. Para la medida de la autoestima, se empleó la Escala de Autoestima de Rosenberg. Los estresores académicos percibidos se evaluaron mediante la Escala de Estresores Académicos (E-CEA, que forma parte del Cuestionario de Estrés Académico (CEA. Nuestros resultados indican que las intervenciones en público, los exámenes y las deficiencias metodológicas del profesorado constituyen, por este orden, los principales sucesos que el estudiante percibe como amenazantes. Asimismo, se constata que cuanto mayor es la autovalía del estudiante, menor es la percepción del contexto académico como estresante

  15. Las descargas de contenidos audiovisuales en Internet entre estudiantes universitarios

    Directory of Open Access Journals (Sweden)

    2016-07-01

    Full Text Available El presente trabajo analiza el fenómeno de las descargas de contenidos audiovisuales –películas y series de televisión– que habitualmente practican los universitarios a través de Internet; sus actitudes ante las descargas ilegales y la formación que tienen en relación a la situación legal de las mismas. Estas cuestiones conforman una realidad que aunque a priori parece ser demasiado frecuente, se encuentra todavía muy poco explorada y es escasamente tratada desde una perspectiva científica en nuestro contexto. Los datos se obtuvieron a partir de un cuestionario diseñado ad hoc, administrado a estudiantes de tres Grados universitarios (Comunicación Audiovisual, Educación Primaria y Educación Social, por considerar que se trata de titulaciones en las que un conocimiento de base ético y legal ante las descargas de contenidos en la red es urgente y necesario para unos jóvenes que se están preparando con el propósito de dedicarse a la formación e información de los futuros ciudadanos del siglo XXI. Los resultados del estudio muestran cómo el consumo de contenidos procedentes de la industria audiovisual (televisiva y cinematográfica, es una práctica asentada entre los universitarios, que tienen actitudes claramente favorables hacia ella pero que prestan escasa importancia a cuestiones éticas y legales ante las descargas no legales, además de tener muy baja formación en estas cuestiones. Los resultados sugieren la necesidad de poner en marcha acciones educomunicativas para mejorar sus competencias informacionales y digitales.

  16. Novel natural food antimicrobials.

    Science.gov (United States)

    Juneja, Vijay K; Dwivedi, Hari P; Yan, Xianghe

    2012-01-01

    Naturally occurring antimicrobial compounds could be applied as food preservatives to protect food quality and extend the shelf life of foods and beverages. These compounds are naturally produced and isolated from various sources, including plants, animals and microorganisms, in which they constitute part of host defense systems. Many naturally occurring compounds, such as nisin, plant essential oils, and natamycin, have been widely studied and are reported to be effective in their potential role as antimicrobial agents against spoilage and pathogenic microorganisms. Although some of these natural antimicrobials are commercially available and applied in food processing, their efficacy, consumer acceptance and regulation are not well defined. This manuscript reviews natural antimicrobial compounds with reference to their applications in food when applied individually or in combination with other hurdles. It also reviews the mechanism of action of selected natural antimicrobials, factors affecting their antimicrobial activities, and future prospects for use of natural antimicrobials in the food industry.

  17. On nature and bioethics.

    Science.gov (United States)

    Peterson, Paul Silas

    2010-01-01

    The account of nature and humanity's relationship to nature are of central importance for bioethics. The Scientific Revolution was a critical development in the history of this question and many contemporary accounts of nature find their beginnings here. While the innovative approach to nature going out of the seventeenth century was reliant upon accounts of nature from the early modern period, the Middle Ages, late-antiquity and antiquity, it also parted ways with some of the understandings of nature from these epochs. Here I analyze this development and suggests that some of the insights from older understandings of nature may be helpful for bioethics today, even if there can be no simple return to them.

  18. A Natural Love of Natural Products

    OpenAIRE

    Kingston, David G. I.

    2008-01-01

    Recent research on the chemistry of natural products from the author?s group that led to the receipt of the ACS Ernest Guenther Award in the Chemistry of Natural Products is reviewed. REDOR NMR and synthetic studies established the T-taxol conformation as the bioactive tubulin-binding conformation, and these results were confirmed by the synthesis of compounds which clearly owed their activity or lack of activity to whether or not they could adopt the T-taxol conformation. Similar studies wit...

  19. UN ESTUDIO SOBRE LA INTERACCIÓN ENTRE LA PESQUISA CIENTÍFICA Y LA PRÁCTICA PROFESIONAL CONTABLE

    Directory of Open Access Journals (Sweden)

    Ana Paula Batista da Silva

    2012-06-01

    Full Text Available Este estudio tuvo por objetivo analizar la interacción de la pesquisa científica con la práctica de la profesión contable. Se trata de un estudio exploratorio, por dedicarse a examinar un tema poco explotado en el Brasil, con abordaje cuantitativo y utilización de survey como técnica de colecta de los datos, apoyada por un instrumento de pesquisa conteniendo cuestiones que abordaron aspectos como: interés y utilización de las pesquisas; estudio y desarrollo de temas; medios de divulgación de la pesquisa; y causas de la laguna entre la pesquisa y la práctica. Es classificado en relación a los objetivos como descriptivo, en la medida en que se describió como se da esta interacción. Los datos fueron analizados mediante la técnica estadística de análisis factorial del tipo R, resumiéndolos en factores para el posterior análisis, validados por medio de los testes Kaiser-Meyer-Olkin (KMO y Bartlett de esferacidad. Se concluyó que, en razón de las diferentes naturalezas, es natural cierto distanciamiento entre la pesquisa y la práctica contable. No obstante, ése puede ser minimizado, entre otros factores, por el gran interés de los profesionales en conocer y aplicar los resultados de pesquisas en la práctica, y, también, por la confirmación de que los temas más pesquisados en el área contable corresponden a los temas de mayor interés en la opinión de los profesionales Contables. Tales resultados sugieren que la interacción y la comunicación entre la academia y los profesionales contabilistas deban merecer mayor atención visando tornarlas más eficaces.

  20. Nota preliminar sobre Leishmaniosis natural en perros

    Directory of Open Access Journals (Sweden)

    Arístides Herrer

    1948-12-01

    Full Text Available En una provincia del Perú donde es, endémica la Leishmaniosis tegumentaria conocida con el nombre de Uta, por espacio de algo más de dos años se han llevado a cabo detenidos estudios en busca del reservorio de dicha enfermedad, comprendiendo estas investigaciones principalmente a los, animales domésticos de la región. La primera serie, de observaciones, realizadas entre Mayo, 1945 y julio, 1946, consta de 469 animales. Durante este período el autor esperaba encontrar en los animales infectados lesiones de la piel ulceradas en forma semejante a lo que sucede en el hombre, cosa que no le fué posible verificar en ningún caso. Informado del aspecto macroscópico de las lesiones en el perro, por medio de infecciones experimentales que obtuviera en el laboratorio, prosiguió sus observaciones con 496 animales más, consiguiendo demostrar la infecciones natural en 40 perros. Un hecho importante en estas infecciones es que con frecuencia no dan lugar a ninguna alteración macroscópica de la piel. La incidencia de la infección natural del perro coincide en líneas generales con la humana, además de que en varias oportunidades los animales infectados procedían de las mismas habitaciones donde había uno o más casos de leishmaniosis tegumentaria entre sus dueños.

  1. Nexos estratégicos entre la retórica y la publicidad

    Directory of Open Access Journals (Sweden)

    Luis Gallardo Vera

    2011-06-01

    Full Text Available El presente artículo contribuye a establecer nexos estratégicos entre la retórica y la publicidad. La adopción del prisma estratégico en los estudios retóricos de la publicidad no es común, sin embargo, la relación entre retórica y publicidad a un nivel estratégico es evidente, teniendo presente los estudios que han investigado la simbiosis entre las dos actividades.Del universo compuesto por las investigaciones sobre retórica y publicidad se seleccionó una muestra de las obras susceptibles de responder a la pregunta de cuáles son los nexos estratégicos entre la retórica y la publicidad. Con este criterio se conformó una muestra teóricamente conducida del universo. La hipótesis de partida ha sido que, si existen documentos que indaguen en la relación entre la retórica y la publicidad, es posible construir un documento que muestre de un modo amplio cuáles son los nexos estratégicos entre ambas actividades. Finalmente, se contrastó que, efectivamente, este documento es único al mostrar ampliamente cuáles son los nexos estratégicos existentes entre la retórica y la publicidad.

  2. Democracia Liberal: uma novidade já desbotada entre jovens

    Directory of Open Access Journals (Sweden)

    Renata Florentino

    2008-06-01

    Full Text Available Este artigo busca mostrar a relação da juventude brasiliense com a política institucional, revelando o que está por trás da rejeição aos políticos profissionais e às instituições que ocupam. Em vez de estereotipar a postura crítica destes e destas jovens, sem antes analisar serenamente o contexto em que essa crítica surge, procurou-se mostrar o lugar de fala, a arena política em que surge essa crítica. Nessa arena, encontra-se uma democracia institucionalizada, com eleições estáveis, mas que não corresponde às expectativas que foram geradas com a sua implementação, junto com uma população bem informada e impactada por ações governamentais ou a ausência destas. Sem louvores ou reprovações, há que se perguntar se esta descrença da política institucional revela apenas uma desconexão de mundos ou a abertura de espaço para o surgimento de novas formas de organização política. O artigo trabalha com dados da PNAD 2005 e o Índice de Desenvolvimento Juvenil da UNESCO sobre a caracterização da juventude de Brasília e dados do TSE, sobre o alistamento eleitoral facultativo entre jovens.This article intends to analize the relationship between the city of Brasília´s youth and the institutional politics. We show what is behind the rejection to professional politicians and to the institutions they control. Instead of stereotipyze the critical behavior of the youth, we first analyze the context where this refusal takes place. We find an established democracy, with stable elections, but not corresponding to the expectations created during its implementation, added to a population that is well informed about the youth, it is necessary to ask if this lack of trust on institutional politics shows disconected worlds or a opened space to the emergence of new forms of political organization. This article is based on 2005 PNAD (National Research by Housing sample data and the Youth Development Index of UNESCO, to describe the

  3. Enfermedad pulmonar obstructiva: diferencias entre hombres y mujeres

    Directory of Open Access Journals (Sweden)

    María Soledad Rodríguez-Pecci

    2012-06-01

    Full Text Available La enfermedad pulmonar obstructiva crónica (EPOC ha aumentado su prevalencia en el sexo femenino. Los casos de mujeres se describen como más sintomáticas. A pesar de que la EPOC se ha vinculado a elevado riesgo cardiovascular, hay pocos estudios sobre diferencias por sexo. El objetivo de nuestro estudio fue determinar la influencia del sexo sobre calidad de vida y síntomas, tratamiento, factores de riesgo y enfermedad cardiovascular (ECV en una población de pacientes con EPOC. En este estudio prospectivo observacional de corte transversal, se incluyeron pacientes con EPOC ingresados consecutivamente entre el 1 de septiembre de 2008 al 1 de marzo de 2010. Se registraron edad, sexo, habito tabáquico, factores de riesgo y enfermedad cardiovascular, tratamiento y gravedad de la EPOC. Se midió índice tobillo-brazo (ITB y se realizó Euroqol-5D. Se incluyeron 246 pacientes (195 hombres. Los hombres fueron más ex fumadores (68.7% vs. 15.7%, p < 0.001, tuvieron un VEF1 menor (48.7% ± 15.7 vs. 58.2% ± 10.9 de teórico, p < 0.001 y mayor frecuencia de cardiopatía isquémica (16.4% vs. 5.9%, p = 0.04. Las mujeres presentaron más prevalencia de EPOC sin exposición al tabaco (64.7% vs. 7.2%, p < 0.001, más síntomas de ansiedad y depresión (p = 0.004 e ITB alterado en menor frecuencia (20% vs. 41.6%, p = 0.01. Concluimos que hubo diferencias en la EPOC en relación al sexo, con compromiso pulmonar y cardiovascular más grave en hombres y más síntomas de ansiedad y depresión en mujeres.

  4. Natural Information Processing Systems

    OpenAIRE

    John Sweller; Susan Sweller

    2006-01-01

    Natural information processing systems such as biological evolution and human cognition organize information used to govern the activities of natural entities. When dealing with biologically secondary information, these systems can be specified by five common principles that we propose underlie natural information processing systems. The principles equate: (1) human long-term memory with a genome; (2) learning from other humans with biological reproduction; (3) problem solving through random ...

  5. Natural gas annual 1997

    International Nuclear Information System (INIS)

    1998-10-01

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1997 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1993 to 1997 for each Census Division and each State. Annual historical data are shown at the national level. 27 figs., 109 tabs

  6. Natural Ventilation in Atria

    DEFF Research Database (Denmark)

    Svidt, Kjeld; Heiselberg, Per; Hendriksen, Ole Juhl

    This case study comprises a monitoring programme as well as a Computational Fluid Dynamics (CFD) analysis of a natural ventilated atrium. The purpose has been to analyse the performance of a typical natural ventilation system in Denmark under both summer and winter conditions.......This case study comprises a monitoring programme as well as a Computational Fluid Dynamics (CFD) analysis of a natural ventilated atrium. The purpose has been to analyse the performance of a typical natural ventilation system in Denmark under both summer and winter conditions....

  7. Nature-based integration

    DEFF Research Database (Denmark)

    Pitkänen, Kati; Oratuomi, Joose; Hellgren, Daniela

    Increased attention to, and careful planning of the integration of migrants into Nordic societies is ever more important. Nature based integration is a new solution to respond to this need. This report presents the results of a Nordic survey and workshop and illustrates current practices of nature...... based integration by case study descriptions from Denmark, Sweden Norway and Finland. Across Nordic countries several practical projects and initiatives have been launched to promote the benefits of nature in integration and there is also growing academic interest in the topic. Nordic countries have...... the potential of becoming real forerunners in nature based integration even at the global scale....

  8. Natural gas annual 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-10-01

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1997 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1993 to 1997 for each Census Division and each State. Annual historical data are shown at the national level. 27 figs., 109 tabs.

  9. Natural gas outlook

    International Nuclear Information System (INIS)

    Molyneaux, M.P.

    1998-01-01

    An overview of natural gas markets in Canada and in the United States was provided. The major factors that determine the direction of natural gas prices were depicted graphically. Price volatility has decreased in recent months. As expected, April through November total energy consumption reached historically high levels. Demand for natural gas during the summer of 1997 was not as strong as anticipated. Nuclear energy appears to be on the slippery slope, with natural gas-driven electricity projects to fill the void. Hydroelectricity had a strong showing in 1997. Prospects are less bright for 1998 due to above average temperatures. Canadian natural gas export capacity has increased 5.5 times between 1986 and estimated 1999 levels. Despite this, in 1997, deliveries to the United States were marginally behind expectations. Natural gas consumption, comparative fuel prices, natural gas drilling activity, natural gas storage capacity, actual storage by region, and average weekly spot natural gas prices, for both the U. S. and Canada, were also provided. With regard to Canada, it was suggested that Canadian producers are well positioned for a significant increase in their price realization mostly because of the increase in Canada's export capacity in 1997 (+175 Mmcf/d), 1998 (1,060 Mmcf/d) and potentially in 1999 or 2000, via the Alliance Pipeline project. Nevertheless, with current production projections it appears next to impossible to fill the 10.9 Bcf/d of export capacity that will be potentially in place by the end of 1999. tabs., figs

  10. Nephrotoxicity of Natural Products.

    Science.gov (United States)

    Nauffal, Mary; Gabardi, Steven

    2016-01-01

    The manufacture and sale of natural products constitute a multi-billion dollar industry. Nearly a third of the American population admit to using some form of complementary or alternative medicine, with many using them in addition to prescription medications. Most patients fail to inform their healthcare providers of their natural product use and physicians rarely inquire. Annually, thousands of natural product-induced adverse events are reported to Poison Control Centers nationwide. Natural product manufacturers are not responsible for proving safety and efficacy, as the FDA does not regulate them. However, concerns exist surrounding the safety of natural products. This review provides details on natural products that have been associated with renal dysfunction. We have focused on products that have been associated with direct renal injury, immune-mediated nephrotoxicity, nephrolithiasis, rhabdomyolysis with acute renal injury, hepatorenal syndrome, and common adulterants or contaminants that are associated with renal dysfunction. The potential for natural products to cause renal dysfunction is justifiable. It is imperative that natural product use be monitored closely in all patients. Healthcare practitioners must play an active role in identifying patients using natural products and provide appropriate patient education. © 2016 S. Karger AG, Basel.

  11. Nature as Dissonant Heritage

    DEFF Research Database (Denmark)

    Clemmensen, Thomas Juel

    2014-01-01

    accepts that nature it not existing outside culture as something that be restored to its original state, but a contemporary product created and managed with certain objectives in mind, nature restoration like heritage production are prone to same kind of dissonance – our nature is not necessary...... their nature. According to Ashworth cultural dissonance can be managed in a number of different way depending on which type of plural society is preferred. Many of these management strategies consciously or unconsciously involve some form of denial, neglect, destruction, reinterpretation or marginalizing...

  12. Oklo natural reactor

    International Nuclear Information System (INIS)

    Fujii, Isao

    1985-01-01

    In 1954, Professor Kazuo, Kuroda of Arkansas University in USA published the possibility that spontaneously generated natural nuclear reactors existed in prehistoric age. In 1972, 18 years after that, Commissariat a l'Energie Atomique published that in the Oklo uranium deposit in Gabon, Africa, a natural nuclear reactor was found. This fact was immediately informed to the whole world, but in Japan, its details have not necessarily been well known. The chance of investigating into this fact and visiting the Oklo deposit by the favor of COMUF, the owner of the Oklo deposit, was given, therefore, the state of the natural reactors, which has been known so far, is reported. At present, 12 natural reactors have been found in the vicinity of the Oklo deposit. The natural reactors were generated spontaneously in uranium deposits about 1.7 billion years ago when the isotopic abundance of U-235 was 3 %, and the chain reaction started naturally. When the concentration of U-235 lowered, the reaction stopped naturally. The abnormality in the U-235 abundance in natural uranium was found, and the cause was pursued. The evidence of the existence of natural reactors was shown. (Kako, I.)

  13. A mathematical nature walk

    CERN Document Server

    Adam, John A

    2009-01-01

    How heavy is that cloud? Why can you see farther in rain than in fog? Why are the droplets on that spider web spaced apart so evenly? If you have ever asked questions like these while outdoors, and wondered how you might figure out the answers, this is a book for you. An entertaining and informative collection of fascinating puzzles from the natural world around us, A Mathematical Nature Walk will delight anyone who loves nature or math or both. John Adam presents ninety-six questions about many common natural phenomena--and a few uncommon ones--and then shows how to answer them using mostly b

  14. Soporte social, familiar y autoconcepto: relación entre los constructos

    Directory of Open Access Journals (Sweden)

    Makilim Nunes Baptista

    2012-01-01

    Full Text Available El objetivo del estudio fue verificar las asociaciones entre el soporte social, el soporte familiar y el autoconcepto en un grupo de hombres y mujeres. En el caso de los hombres hubo correlaciones negativas entre el soporte familiar y los factores negligencia, agresividad e indiferencia del instrumento de autoconcepto. En el grupo de mujeres el soporte familiar total fue correlacionado positivamente con sensualidad y responsabilidad, y negativamente con inseguridad, siendo las tres medidas del instrumento de autoconcepto. Al considerar las relaciones entre el soporte familiar y el soporte social, todas fueron positivas, tanto en los hombres como en las mujeres.

  15. Las relaciones de comercio e inversión entre Colombia y Venezuela

    OpenAIRE

    Eglé Iturbe de Blanco

    1997-01-01

    Venezuela y Colombia cuentan con una larga trayectoria histórica en sus relaciones económicas. Comercian entre ellas y sus nacionales a lo largo de la frontera desde su nacimiento como naciones e interactúan entre ambos países como si fuera uno solo. Al norte, en la península de la Guajira, viven poblaciones indígenas comunes cuyo sustento es el comercio entre ambos lados de la frontera; y al sur, en los estados andinos venezolanos limítrofes con los llanos colombianos, tradicionalmente se ha...

  16. Violencia sexual entre compañeros y violencia en parejas adolescentes

    OpenAIRE

    Ortega Ruiz, Rosario; Ortega Rivera, Francisco Javier; Sánchez Jiménez, Virginia

    2008-01-01

    El presente estudio ha analizado la presencia de violencia sexual entre compañeros y en las parejas adolescentes y jóvenes. Específicamente se han estudiado las diferencias por sexo, edad y estadio de la relación sentimental tanto en violencia sexual entre iguales como en las parejas, en una muestra de 490 adolescentes (55,7% chicos, 44,3% chicas, edad media 16.08 años). Los resultados descriptivos mostraron la misma incidencia de violencia sexual entre iguales y en las pa...

  17. "Cy Twombly: Intérprete de dos mundos" [Un artista entre Estados Unidos y Europa, entre lo clásico y lo contemporáneo

    OpenAIRE

    Gras Cruz, Irene

    2017-01-01

    Esta tesis “Cy Twombly: Intérprete de dos mundos” [Un artista entre Estados Unidos y Europa, entre lo clásico y lo contemporáneo] pretende dar a conocer al artista norteamericano Cy Twombly (1928-2011) en nuestro país y destacar la importancia que tiene dentro del panorama artístico como figura clave en un momento de efervescencia —artística y creativa— americana en el que a diferencia de sus coetáneos prefirió emigrar a Europa, concretamente a Italia. Mientras todos se trasladaban a la nueva...

  18. Robot Saltador y Procedimiento para su Control

    OpenAIRE

    Akinfiev, Teodor; Armada, Manuel; Fernández, Roemi; Montes, Héctor

    2005-01-01

    Robot saltador para el movimiento en terrenos con obstáculos, que contiene al menos un resorte (4) con uno de sus extremos unido al cuerpo (1) del robot, y una cadena cinemática entre el motor (5) y el resorte (4) que comprende un cilindro (7) conectado con el eje del motor (5) y una cuerda (8), con uno de sus extremos conectado al cilindro (7) y con el segundo extremo conectado al pie (3). El procedimiento de control se caracteriza porque en el momento en el que el pie (3) pierde el contacto...

  19. Gamma radiation of quartz from Entre Rios (SC) and QuaraÍ (RS)

    International Nuclear Information System (INIS)

    Enokihara, Cyro T.; Rela, Paulo R.; Schultz-Güttler, Rainer A.

    2017-01-01

    The availability of gamma ray irradiators in Brazil increased the possibilities of treatments of gemstones for color enhancements. One of the minerals with a very high potential of these treatments is quartz, a very widespread mineral with many colored commercial varieties. A specific variety of quartz showing a green color in nature or induced artificially by radiation gamma ( 60 Co) is quite rare. In Brazil the widely scattered geode occurrences along a 600 km stretch from Quaraí at Brazil southernmost tip to Uberlandia in Minas Gerais is one of these. Quartz from these occurrences have been formed by strong hydrothermal activities. That way much quartz crystals showed a very fast growth history facilitating the formation of growth defects and the uptake of water in form of micro inclusions, molecular water, silanol (Si-OH) and OH. In the present work the material analyzed is from hydrothermal regimes located near the towns Entre Rios (SC) and Quaraí (RS). To characterize these materials analyses have been made by ICP, NAA, electron microscopy, water loss techniques and UV-VIS and NIR-FTIR spectroscopic measurements. Silanol complexes are found, which by radiation due to gamma rays form the color center NBOHC (Non-Bonding Oxygen Hole Center), showing absorption between 590 to 620 nm and leaving a transmission window at about 550nm, responsible for the green color. The spectroscopic water determination showed less molecular water (up to 2300 ppm by weight), probably due to remaining silanol complexes.The water content with up to 3200 ppm by weight exceeds the amount of charge balancing cations (Fe, Al, Li). (author)

  20. Entre la gestión del riesgo y el abordaje psicosocial

    Directory of Open Access Journals (Sweden)

    Matamoros Calvo, María Cristina

    2013-06-01

    Full Text Available El trabajo en la gestión para la reducción del riesgo por desastres, contempla diferentes elementos dentro de su estrategia, muchos de ellos de contenido técnico y otros de índole social; y para su ejecución y cumplimiento de los objetivos se requiere de esfuerzos interdisciplinarios, para poder hacer abordajes integrales. Por tanto, en este escrito se pretende hacer una reflexión en torno a la relación entre la gestión del riesgo y el aporte de la psicología como ciencia social, llamando desde ahí la atención sobre la importancia de considerar el factor psicosocial en las estrategias de reducción del riesgo. Para lo cual se hace un recorrido desde la concepción de la psicología, de la gestión del riesgo, para finalmente arribar a una mirada integradora como propuesta en el abordaje del riesgo, de las emergencias y los desastres The work in management to reduce the risk by disasters, includes different elements within the strategy, most of them of technical content and others of social nature. For the execution and compliance of the objectives, it is necessary to have interdisciplinary efforts to apply integral focus. In this context, this work tries to reflect around the relation between risks management and the contribution of psychology as a social science, emphasizing the importance of considering the psychosocial factor in the risk reduction strategies. For this, there is a walk from the conception of psychology to the risk management, to finally arrive at an integral gaze as a proposal to the risk approach for emergencies and disasters

  1. Gamma radiation of quartz from Entre Rios (SC) and QuaraÍ (RS)

    Energy Technology Data Exchange (ETDEWEB)

    Enokihara, Cyro T.; Rela, Paulo R., E-mail: cteiti@ipen.br, E-mail: prela06@yahoo.com.br [Instituto de Pesquisas Energéticas e Nucleares (IPEN/CNEN-SP), São Paulo, SP (Brazil); Schultz-Güttler, Rainer A., E-mail: rainersgut@gmail.com [Universidade de Sao Paulo (USP), Sao Paulo, SP (Brazil). Instituto de Geociências

    2017-07-01

    The availability of gamma ray irradiators in Brazil increased the possibilities of treatments of gemstones for color enhancements. One of the minerals with a very high potential of these treatments is quartz, a very widespread mineral with many colored commercial varieties. A specific variety of quartz showing a green color in nature or induced artificially by radiation gamma ({sup 60}Co) is quite rare. In Brazil the widely scattered geode occurrences along a 600 km stretch from Quaraí at Brazil southernmost tip to Uberlandia in Minas Gerais is one of these. Quartz from these occurrences have been formed by strong hydrothermal activities. That way much quartz crystals showed a very fast growth history facilitating the formation of growth defects and the uptake of water in form of micro inclusions, molecular water, silanol (Si-OH) and OH. In the present work the material analyzed is from hydrothermal regimes located near the towns Entre Rios (SC) and Quaraí (RS). To characterize these materials analyses have been made by ICP, NAA, electron microscopy, water loss techniques and UV-VIS and NIR-FTIR spectroscopic measurements. Silanol complexes are found, which by radiation due to gamma rays form the color center NBOHC (Non-Bonding Oxygen Hole Center), showing absorption between 590 to 620 nm and leaving a transmission window at about 550nm, responsible for the green color. The spectroscopic water determination showed less molecular water (up to 2300 ppm by weight), probably due to remaining silanol complexes.The water content with up to 3200 ppm by weight exceeds the amount of charge balancing cations (Fe, Al, Li). (author)

  2. Nature as Measure

    DEFF Research Database (Denmark)

    Peters, Terri

    2011-01-01

    The potential for biomimicry lies far beyond the direct imitation of natural forms. Guest-editor Terri Peters describes how Janine Benyus, the biologist and innovation consultant, is using biomimicry to create performance metrics from natural technologies and processes for assessing aspects...

  3. Modeling Natural Selection

    Science.gov (United States)

    Bogiages, Christopher A.; Lotter, Christine

    2011-01-01

    In their research, scientists generate, test, and modify scientific models. These models can be shared with others and demonstrate a scientist's understanding of how the natural world works. Similarly, students can generate and modify models to gain a better understanding of the content, process, and nature of science (Kenyon, Schwarz, and Hug…

  4. Greenland and Natural Resources

    DEFF Research Database (Denmark)

    Lyck, Lise

    Greenland policy can delay and maybe change the future of the forecasted development of the use of natural resources. This book is relevant for anyone interested in Greenland in general and the development of Greenland both politically and economically and in relation natural resources....

  5. Natural - synthetic - artificial!

    DEFF Research Database (Denmark)

    Nielsen, Peter E

    2010-01-01

    The terms "natural," "synthetic" and "artificial" are discussed in relation to synthetic and artificial chromosomes and genomes, synthetic and artificial cells and artificial life.......The terms "natural," "synthetic" and "artificial" are discussed in relation to synthetic and artificial chromosomes and genomes, synthetic and artificial cells and artificial life....

  6. European natural gas

    International Nuclear Information System (INIS)

    Thackeray, Fred

    1999-11-01

    Contains Executive Summary and Chapters on: Main issues; Natural gas consumption and supply: statistics and key features of individual countries; Sectoral natural gas consumption; Indigenous production; Imports; Prices and taxes; The spot market: The interconnector; Forecasts of production and consumption and contracted imports; Progress of markets liberalisation; Effects of environmentalist developments; Transmission networks and storage; Some principal players. (Author)

  7. Nature Foil Reliefs

    Science.gov (United States)

    Lane, Shaw J.

    2012-01-01

    Nature has always been a source of inspiration for artists across the centuries. Artists such as Leonardo da Vinci, Georgia O'Keeffe, Ansel Adams, and Andy Goldsworthy all drew inspiration for their work from nature. Seeds come from the dried pods, which when planted and cared for, bear fruit. In this article, the author describes how her…

  8. Plutonium in nature

    International Nuclear Information System (INIS)

    Madic, C.

    1994-01-01

    Plutonium in nature comes from natural sources and anthropogenic ones. Plutonium at the earth surface comes principally from anthropogenic sources. It is easily detectable in environment. The plutonium behaviour in environment is complex. It seems necessary for the future to reduce releases in environment, to improve predictive models of plutonium behaviour in geosphere, to precise biological impact of anthropogenic plutonium releases

  9. Exposure to natural radiation

    International Nuclear Information System (INIS)

    Green, B.M.R.

    1985-01-01

    A brief report is given of a seminar on the exposure to enhanced natural radiation and its regulatory implications held in 1985 at Maastricht, the Netherlands. The themes of the working sessions included sources of enhanced natural radiation, parameters influencing human exposure, measurement and survey programmes, technical countermeasures, risk and assessment studies, philosophies of dose limitations and national and international policies. (U.K.)

  10. Nature and landscape protection

    International Nuclear Information System (INIS)

    Klinda, J.; Lieskovska, Z.

    1998-01-01

    In accordance with National Council of the Slovak Republic Act N. 287/1994 Coll. on Nature and Landscape Protection, the system of complex nature landscape protection has been designed based on five levels of protection. Categories of protected areas as well as cultural monuments in the Slovak Republic are reviewed.Slovak contribution to the world heritage is included

  11. Growing natural gas usage

    International Nuclear Information System (INIS)

    Saarni, T.

    1996-01-01

    Finnish natural gas usage topped the 3.3 billion cubic metre mark last year, up 3.6 % on the 1994 figure. Growth has increased now for 12 years in a row. Thanks to offtake by large individual users, the pipeline network has been expanded from South-East Finland to the Greater Helsinki area and central southern Finland. Natural gas plays a much larger role in this region than the 10 % accounted for by natural gas nationally would indicate. The growth in the share of Finland's energy use accounted for by natural gas has served to broaden the country's energy supply base. Natural gas has replaced coal and oil, which has considerably reduced the level of emissions resulting form energy generation

  12. Unnaturalised racial naturalism.

    Science.gov (United States)

    Hochman, Adam

    2014-06-01

    Quayshawn Spencer (2014) misunderstands my treatment of racial naturalism. I argued that racial naturalism must entail a strong claim, such as "races are subspecies", if it is to be a substantive position that contrasts with anti-realism about biological race. My recognition that not all race naturalists make such a strong claim is evident throughout the article Spencer reviews (Hochman, 2013a). Spencer seems to agree with me that there are no human subspecies, and he endorses a weaker form of racial naturalism. However, he supports his preferred version of 'racial naturalism' with arguments that are not well described as 'naturalistic'. I argue that Spencer offers us an unnaturalised racial naturalism. Copyright © 2014 Elsevier Ltd. All rights reserved.

  13. Entre cooperação reflexiva e democracia procedimental

    Directory of Open Access Journals (Sweden)

    Maria Eugenia Bunchaft

    2009-12-01

    Full Text Available A filosofia de Axel Honneth sobrereconhecimento procura analisar a relaçãoentre a teoria do desenvolvimento psíquicoe a evolução moral da sociedade, de forma aalcançar novos parâmetros capazes de renovara Teoria Crítica. O elemento fundamental doseu arcabouço teórico constitui a concepçãode identidade como uma luta intersubjetivapor reconhecimento mútuo. Por sua vez,Jürgen Habermas desenvolveu uma concepçãoprocedimentalista de direito e democracia,cujos influxos teóricos são fundamentais para afilosofia política do reconhecimento. Nas obrasA Inclusão do Outro e Direito e Democracia,o autor sublinha ser o sistema de direitossensível às demandas por reconhecimentode sociedades multiculturais, de forma quegrupos culturais devem articular em processosdeliberativos aquelas tradições que desejamperpetuar. Inobstante, para Honneth, ainstitucionalização de procedimentos capazesde alicerçar as expectativas normativas dasdemandas identitárias seria insuficiente paragarantir efetiva justiça social e, portanto,incapaz de abarcar o substrato moral inerenteàs lutas intersubjetivas por reconhecimento: aexperiência do desrespeito. Com efeito, pretendemos apresentar uma contraposição teórica entre o modelo procedimental habermasianoe o modelo de cooperação reflexiva desenvolvidopor Axel Honneth, a fim de aprofundara compreensão acerca da filosofia política doreconhecimento. The philosophy of Axel Honneth onrecognition analyzes the relationship betweenthe theory of psychological development and themoral development of society in order to reachnew parameters to renew Critical Theory. Thekey element of his theoretical framework is theconcept of identity as an intersubjective strugglefor mutual recognition. In turn, Jürgen Habermashas developed a procedural conception of lawand democracy, whose theoretical inflows arecritical to the political philosophy of recognition.In the works Inclusion of the Other and Lawand Democracy

  14. Desfasajes: entre la historieta y la política.

    Directory of Open Access Journals (Sweden)

    Palacios, Cristian

    2012-01-01

    Full Text Available [es] El concepto de desfase acuñado por la Teoría de los discursos sociales de Eliseo Verón en los años setenta quiere dar cuenta de un aspecto esencial de dicha teoría, es decir, la diferencia que se produce en la circulación del sentido entre la producción y el reconocimiento; viene aquí a ilustrar un caso particular de indeterminación constitutiva de un discurso conflictivo: la segunda versión de la historieta El Eternauta de Hector Germán Oesterheld, con dibujos de Alberto Breccia. Publicado en el semanario Gente en 1969, este experimento de historieta política en un medio que le era naturalmente adverso, inserta en el argumento de la primera versión una serie de lecciones de política aleccionadora, extrañas no sólo a la revista sino también al arte de Breccia que llegará a ser cuestionado por el mismo editor y que derivará en la suspensión de la publicación. Nos proponemos analizar este episodio de “fracaso” en la búsqueda de hacer conducir un mensaje político determinado en un medio de comunicación de masas – reconocido además por su frivolidad - y extraer algunas conclusiones sobre las formas de circulación del sentido en los discursos políticos de los años 60 y 70. [en] The notion of gap coined by the Social Discourses Theory of Eliseo Veron in the seventies wants to show an essential aspect of this theory: the difference between production and recognition in the spread of meaning; illustrated here a particular case of constitutive indeterminacy of a controversial discourse: the second version of El Eternauta by Hector German Oesterheld and Alberto Breccia. This comic published in the weekly popular magazine Gente in 1969 is a rare experiment of political graphic novel in a media that was hostile to its convictions. It inserts in the plot of the original version a series of politics instructive lessons, stranges not only to the magazine but to the art of Breccia, who will be questioned by the editor

  15. Sociabilidade e construção de identidade entre antropocêntricos e ecocêntricos Sociability and the construction of identities among anthropocentric and ecocentric associations

    Directory of Open Access Journals (Sweden)

    Sergio B. F. Tavolaro

    2000-06-01

    Full Text Available Até que ponto as associações ambientalistas que emergiram no seio da sociedade civil a partir dos anos 50 são portadoras do projeto da modernidade? Em que medida são elas não só o resultado da modernidade mas também catalisadoras de seus principais valores? O presente artigo se coloca como tarefa investigar a relação de afinidade entre organizações civis ambientalistas e modernidade. Para tal, analisa algumas das dimensões centrais que constituem a modernidade além das diferentes maneiras a partir das quais o movimento ambientalista internalisa o mundo natural na construção de suas identidades e na proposição de sociabilidades que venham a pautar as relações dos homens entre si e deles com a natureza.To what extent are the environmental associations that emerged from the 50s on the bearers of the so-called "modernity project"? Are they only a consequence of modernity itself or also "propelling elements" of modernity's main values? This paper investigates the possible relationships between environmental civil organizations and modernity. It stresses the dimensions that constitute modernity, and tackles the particular ways in which the environmental movement internalizes nature when building up its specific identities, as well as when proposing social references for the relationship of men and relationships between humankind and the natural world.

  16. Entre a figura e o abstrato: instâncias do pensamento

    Directory of Open Access Journals (Sweden)

    Eduardo Augusto Alves Almeida

    2015-03-01

    Full Text Available Por meio de texto e pintura, este artigo visa discutir a possibilidade de habitar certo intervalo entre polos extremistas, e, a partir da estética, rever paradigmas dos pensamentos moderno e contemporâneo.

  17. Mass médias et figures du religieux islamique au Mali: entre ...

    African Journals Online (AJOL)

    Mass médias et figures du religieux islamique au Mali: entre négociation et appropriation de l'espace public. ... (development of means of transportation and communications technologies) and the extension of democratic rights and freedoms.

  18. Autopistas salvajes: propuesta de WWF España para una Red Estratégica de Corredores Ecológicos entre espacios Red Natura 2000

    OpenAIRE

    Rodríguez Cáceres, Gema; Mateo Sánchez, María Cruz; Fuente Martín, Begoña; Gastón González, Aitor; Saura Martínez, Santiago; Gurrutxaga San Vicente, Mikel

    2018-01-01

    La propuesta de corredores realizada en este documento se basa en los resultados del siguiente estudio encargado por WWF España: Estudio para la identificación de redes de conectividad entre espacios forestales de la Red Natura 2000 en España. ETSI Montes, Forestal y del Medio Natural. Universidad Politécnica de Madrid. 2016. Autores: María Cruz Mateo Sánchez, Begoña de la Fuente Martín, Aitor Gastón González y Santiago Saura Martínez de Toda. [ES] Un territorio donde los espacios de valor...

  19. Gestión integrada de los recursos hídricos y bosques nativos de la cuenca del arroyo Feliciano, Entre Ríos, Argentina

    OpenAIRE

    Romero, Emilia Corina

    2013-01-01

    [Resumen] El área de estudio comprende la cuenca del Arroyo Feliciano, la segunda en extensión de la Provincia de Entre Ríos, con 8199 km2. Cuenta con una demanda creciente de sus recursos hídricos por la intensa agriculturización, con cambio repentino en el uso del suelo, pasando de una ganadería extensiva y bajo bosque natural, al uso arrocero - sojero. Los acuíferos presentes en casi la totalidad de su superficie son de baja aptitud físico-química, lo que genera inconvenientes a la poblaci...

  20. Convergencias y divergencias entre los sistemas interamericano y el europeo de derechos humanos

    OpenAIRE

    Gasparoto, Ana Lucía

    2014-01-01

    Este trabajo tiene la finalidad de puntear las convergencias y las divergencias existentes entre la Corte Interamericana de Derechos Humanos y el Tribunal Europeo de Derechos Humanos, encima con la adopción del Protocolo 11 del Convenio Europeo para la Protección de los Derechos Humanos y las Libertades Fundamentales y su impacto en el Sistema Europeo de Derechos Humanos. Igualmente se analisa las relaciones entre las dos Cortes.

  1. Soutien aux collaborations entre pairs de l'Initiative Think tank et du ...

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

    L'Initiative Think tank (ITT) et le Think Tank Fund (TTF) s'associent pour soutenir des collaborations entre pairs entre les think tanks établis dans les régions où oeuvrent l'ITT (Afrique, Amérique latine et Asie du Sud) et le TTF (Europe centrale, Europe de l'Est et ancienne Union soviétique). Ce soutien a pour objectif de ...

  2. relaPro : Base de datos para encontrar relaciones entre proyectos

    OpenAIRE

    Fortis Urbano, Julio

    2015-01-01

    Desarrollo de una base de datos para almacenar proyectos y una aplicación web de ejemplo que permite encontrar elementos comunes entre los proyectos almacenados en el sistema. Desenvolupament d'una base de dades per emmagatzemar projectes i una aplicació web d'exemple que permet trobar elements comuns entre els projectes emmagatzemats en el sistema. Bachelor thesis for the Computer Science program on Databases.

  3. La gran red: una era nueva entre la ciencia y el mito

    Directory of Open Access Journals (Sweden)

    María del Rosario Contepomi

    2007-03-01

    Full Text Available El propósito del trabajo es relacionar concepciones en torno al concepto red adoptadas por el movimiento espiritualista "Nueva Era" de la ciudad de Posadas, Misiones, Argentina, con aquellas planteadas por teóricos de la "Era de la Información y Comunicación" en el campo de las ciencias sociales. Dadas la complejidad y amplitud que se atribuye a esta noción, hemos denominado la Gran Red a esa construcción fáctica y virtual a la que se le asignan múltiples denominaciones: interconexión, interrelación, articulación. Estos complejos y heterogéneos vínculos se desarrollan entre elementos, dimensiones y niveles diferentes, tales como materialidad y espiritualidad, hombre y naturaleza, sociedad e individuo. Conforme a ello, nos preguntamos respecto a las creencias religiosas, creaciones ideológicas, producciones científicas o construcciones mitológicas que conforman el mundo-red de la cosmovisión la Nueva Era y la cultura-red de los enfoques socio-antropológicos.The purpose of this work is to relate conceptions around the concept of net adopted by the spiritualist movement "New Era" from the city of Posadas, Misiones, Argentina, with those considered by theorists of the "Era of Information and Communication" in the field of Social Sciences. Given the complexity and range that it is attributed to this notion we have designated the Great Net to that factual and virtual construction which is assigned multiple names: interconnection, interrelation, articulation. These complex and heterogeneous links develop among elements, dimensions and different levels, such as material nature and spirituality, man and nature, society and the individual. In accordance with that we ask ourselves regarding religious beliefs, ideological creations, scientific productions or mythological constructions that constitute the world-net of the view of the world of the New Era and the culture-net of the socio-anthropological approaches.

  4. "Diseases and natural kinds".

    Science.gov (United States)

    Sulmasy, Daniel P

    2005-01-01

    David Thomasma called for the development of a medical ethics based squarely on the philosophy of medicine. He recognized, however, that widespread anti-essentialism presented a significant barrier to such an approach. The aim of this article is to introduce a theory that challenges these anti-essentialist objections. The notion of natural kinds presents a modest form of essentialism that can serve as the basis for a foundationalist philosophy of medicine. The notion of a natural kind is neither static nor reductionistic. Disease can be understood as making necessary reference to living natural kinds without invoking the claim that diseases themselves are natural kinds. The idea that natural kinds have a natural disposition to flourish as the kinds of things that they are provides a telos to which to tether the notion of disease - an objective telos that is broader than mere survival and narrower than subjective choice. It is argued that while nosology is descriptive and may have therapeutic implications, disease classification is fundamentally explanatory. Sickness and illness, while referring to the same state of affairs, can be distinguished from disease phenomenologically. Scientific and diagnostic fallibility in making judgments about diseases do not diminish the objectivity of this notion of disease. Diseases are things, not kinds. Injury is a concept parallel to disease that also makes necessary reference to living natural kinds. These ideas provide a new possibility for the development of a philosophy of medicine with implications for medical ethics.

  5. Almacenamiento de gas natural

    Directory of Open Access Journals (Sweden)

    Tomás Correa

    2008-12-01

    Full Text Available The largest reserves of natural gas worldwide are found in regions far of main cities, being necessary different alternatives to transport the fluid to the consumption cities, such as pipelines, CNG or ships, LNG, depending on distances between producing regions and demanding regions and the producing volumes. Consumption regions have three different markets to naturalgas; residential and commercial, industrial and power generation sector. The residential and commercial is highly seasonal and power generation sector is quite variable depending on increases of temperature during summer time. There are also external issuesthat affect the normal gas flow such as fails on the national system or unexpected interruptions on it, what imply that companies which distribute natural gas should design plans that allow supplying the requirements above mentioned. One plan is using underground natural gas storage with capacities and deliverability rates enough to supply demands. In Colombia there are no laws in this sense but it could be an exploration to discuss different ways to store gas either way as underground natural gas storage or above superficies. Existing basically three different types of underground natural gas storage; depleted reservoirs, salt caverns and aquifers. All ofthem are adequate according to geological characteristics and the needs of the distributors companies of natural gas. This paper is anexploration of technical and economical characteristics of different kind of storages used to store natural gas worldwide.

  6. Natural gas in Mexico

    International Nuclear Information System (INIS)

    Ramirez, M.

    1999-01-01

    A series of overhead viewgraphs accompanied this presentation which focused on various aspects of the natural gas industry in Mexico. Some of the viewgraphs depicted statistics from 1998 regarding natural gas throughput from various companies in North America, natural gas reserves around the world, and natural gas reserves in Mexico. Other viewgraphs depicted associated and non-associated natural gas production from 1988 to 1998 in million cubic feet per day. The Burgos Basin and the Cantarell Basin gas production from 1997 to 2004 was also depicted. Other viewgraphs were entitled: (1) gas processing infrastructure for 1999, (2) cryogenic plant at Cd. PEMEX, (3) average annual growth of dry natural gas production for 1997-2004 is estimated at 5.2 per cent, (4) gas flows for December 1998, (5) PGPB- interconnect points, (6) U.S. Mexico gas trade for 1994-1998, (7) PGPB's interconnect projects with U.S., and (8) natural gas storage areas. Technological innovations in the industry include more efficient gas turbines which allow for cogeneration, heat recovery steam generators which reduce pollutant emissions by 21 per cent, cold boxes which increase heat transfer efficiency, and lateral reboilers which reduce energy consumption and total costs. A pie chart depicting natural gas demand by sector shows that natural gas for power generation will increase from 16 per cent in 1997 to 31 per cent in 2004. The opportunities for cogeneration projects were also reviewed. The Comision Federal de Electricidad and independent power producers represent the largest opportunity. The 1997-2001 investment program proposes an 85 per cent sulphur dioxide emission reduction compared to 1997 levels. This presentation also noted that during the 1998-2001 period, total ethane production will grow by 58 tbd. 31 figs

  7. Closer to Nature?

    DEFF Research Database (Denmark)

    Borkfelt, Sune; Kondrup, Sara; Röcklinsberg, Helena

    2015-01-01

    discourses in order to sell one image of animal welfare in intensive animal production while the actual production at the same time presupposes a quite different paradigm of animal welfare. Specifically, product advertising utilizes representations tied to concepts of naturalness in depictions of both animal...... lives and product processes as “natural”. Product marketing suggests a coherence between nature, production process (farm, animal), and end product, thereby creating associations that the lives of production animals are lived in nature and that their products bring a wholesome and sustainable...

  8. Natural radiation environment

    International Nuclear Information System (INIS)

    Vohra, K.G.; Mishra, U.C.; Pillai, K.C.; Sadasivan, S.

    1982-01-01

    The volume presented contains papers presented at the Second Special Symposium on Natural Radiation Environment held at Bombay, India, during January 1981. The papers deal with such topics as : 1)high natural radiation background areas; 2)environmental natural radioactivity; 3)measurement techniques; 4)technologically enhanced radioactivity; 5)indoor radiation environment; 6)radon and daughters in ambient air, and 7)applications in Geosciences. Each of the 87 papers presented has been abstracted and indexed for the U.S. Department of Energy Technical Information Center's Energy Data Base

  9. EEC's: natural uramium supplies

    International Nuclear Information System (INIS)

    Anon.

    1981-01-01

    The demand for nuclear fuel to supply the nuclear plants within the ECC (31,200 MW at the end of last year) totalled nearly 9,600 tons of natural uranium and 4,900 of separation work units (SWU). Once reactors currently under construction come into service, the demand for natural uranium will reach 13,200 tons by 1985 and that for SWUs to 8,600. If one takes the years 1981 to 1985, total natural uranium needs during this period will be 56,300 tons and those for SWUs 35.100 [fr

  10. Living in cities, naturally.

    Science.gov (United States)

    Hartig, Terry; Kahn, Peter H

    2016-05-20

    Natural features, settings, and processes in urban areas can help to reduce stress associated with urban life. In this and other ways, public health benefits from, street trees, green roofs, community gardens, parks and open spaces, and extensive connective pathways for walking and biking. Such urban design provisions can also yield ecological benefits, not only directly but also through the role they play in shaping attitudes toward the environment and environmental protection. Knowledge of the psychological benefits of nature experience supports efforts to better integrate nature into the architecture, infrastructure, and public spaces of urban areas. Copyright © 2016, American Association for the Advancement of Science.

  11. The unnatural racial naturalism.

    Science.gov (United States)

    Spencer, Quayshawn

    2014-06-01

    In the recent article, "Against the New Racial Naturalism", Adam Hochman (2013, p. 332) argues that new racial naturalists have been too hasty in their racial interpretation of genetic clustering results of human populations. While Hochman makes a number of good points, the purpose of this paper is to show that Hochman's attack on new racial naturalists is misguided due to his definition of 'racial naturalism'. Thus, I will show that Hochman's critique is merely a consequence of an unnatural interpretation of racial naturalism. Copyright © 2014 Elsevier Ltd. All rights reserved.

  12. Diagrams of natural deductions

    Energy Technology Data Exchange (ETDEWEB)

    Popov, S V

    1982-01-01

    The concept of natural deductions was investigated by the author in his analysis of the complexity of deductions in propositional computations (1975). Here some natural deduction systems are considered, and an analytical procedure proposed which results in a deduction diagram for each system. Each diagram takes the form of an orientated, charge graph, features of which can be used to establish the equivalence of classes of deductions. For each of the natural deduction systems considered, a system of equivalent transformation schemes is derived, which is complete with respect to the given definition of equivalence. 2 references.

  13. Web life: Ask Nature

    Science.gov (United States)

    2012-11-01

    Ask Nature is a site devoted to biomimicry, an interdisciplinary field in which practitioners study how animals and plants solve problems, and then use those solutions to develop better human technologies.

  14. Natural Gas Acquisition Program

    Data.gov (United States)

    General Services Administration — The "NGAP" system is a web based application which serves NGAP GSA users for tracking information details for various natural gas supply chain elements like Agency,...

  15. Sciences & Nature: Submissions

    African Journals Online (AJOL)

    Sciences & nature publish original works in French or in English that have not been ... This page should provide a summary (200 words maximum) in French and English .... one copy of the journal where his article is published, and 10 offprints.

  16. Natural Hazards Image Database

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Photographs and other visual media provide valuable pre- and post-event data for natural hazards. Research, mitigation, and forecasting rely on visual data for...

  17. The Nature of Grammar

    Institute of Scientific and Technical Information of China (English)

    王楠

    2012-01-01

    This paper describes the nature of grammar as "universalness". The universal grammar indicates that all the languages in the world have identical grammar. This is discussed from three aspects, which gives insight into grammar acquisition.

  18. Art, Technology and Nature

    DEFF Research Database (Denmark)

    Camilla Skovbjerg Paldam and Jacob Wamberg trace the Kantian heritage of radically separating art and technology, and inserting both at a distance to nature, suggesting this was a transient chapter in history. Thus, they argue, the present renegotiation between art, technology and nature is reminiscent......Since 1900, the connections between art and technology with nature have become increasingly inextricable. Through a selection of innovative readings by international scholars, this book presents the first investigation of the intersections between art, technology and nature in post-medieval times....... Transdisciplinary in approach, this volume’s 14 essays explore art, technology and nature’s shifting constellations that are discernible at the micro level and as part of a larger chronological pattern. Included are subjects ranging from Renaissance wooden dolls, science in the Italian art academies, and artisanal...

  19. Historic Natural Vegetation

    Data.gov (United States)

    California Natural Resource Agency — In 2001, the US Fish and Wildlife Service (USFWS) and the U.S. Bureau of Reclamation (BOR) contracted with the California State University, Chico Research Foundation...

  20. Vermont Designated Natural Areas

    Data.gov (United States)

    Vermont Center for Geographic Information — Under Natural Areas Law (10 Vermont Statutes Annotated, Chapter 83 � 2607) the FPR commissioner, with the approval of the governor, may designate and set aside areas...

  1. Radon - natural health threat

    International Nuclear Information System (INIS)

    Wrixon, Anthony

    1985-01-01

    Natural sources of radiation attract little attention, yet a survey has found radon gas in buildings at levels which put the occupants at some risk. The author wants safety standards set without undue delay. (author)

  2. Natural gas pricing

    International Nuclear Information System (INIS)

    Freedenthal, C.

    1993-01-01

    Natural gas pricing is the heart and soul of the gas business. Price specifically affects every phase of the industry. Too low a price will result in short supplies as seen in the mid-1970s when natural gas was scarce and in tight supply. To fully understand the pricing of this energy commodity, it is important to understand the total energy picture. In addition, the effect and impact of world and US economies, and economics in general are crucial to understanding natural gas pricing. The purpose of this presentation will be to show the parameters going into US natural gas pricing including the influence of the many outside industry factors like crude oil and coal pricing, market drivers pushing the gas industry, supply/demand parameters, risk management for buyers and sellers, and other elements involved in pricing analysis

  3. Natural Gas STAR Program

    Science.gov (United States)

    EPA’s Voluntary Methane Programs encourage oil and natural gas companies to adopt cost-effective technologies and practices that improve operational efficiency and reduce emissions of methane, a potent greenhouse gas.

  4. Natural gas for vehicles

    International Nuclear Information System (INIS)

    Chauveron, S. de

    1996-01-01

    This article presents compressed natural gas for vehicles (CNG), which can provide considerable advantages both as an alternative fuel and as a clean fuel. These assets are not only economic but also technical. The first part deals with what is at stake in developing natural gas as a motor fuel. The first countries to use CNG were those with natural gas resources in their subsoil. Today, with a large number of countries having to cope with growing concern about increasing urban pollution, natural gas is also seen as a clean fuel that can help cut vehicle pollutant emissions dramatically. In the second part a brief technical descriptions is given of CNG stations and vehicles, with the aim of acquainting the reader with some of CNG's specific technical features as compared to gasoline and diesel oil. Here CNG technologies are seen to be very close to the more conventional ones. (author)

  5. Natural polymers: an overview

    CSIR Research Space (South Africa)

    John, MJ

    2012-08-01

    Full Text Available The scarcity of natural polymers during the world war years led to the development of synthetic polymers like nylon, acrylic, neoprene, styrene-butadiene rubber (SBR) and polyethylene. The increasing popularity of synthetic polymers is partly due...

  6. Solitonic natural orbitals

    Science.gov (United States)

    Cioslowski, Jerzy

    2018-04-01

    The dependence of the natural amplitudes of the harmonium atom in its ground state on the confinement strength ω is thoroughly investigated. A combination of rigorous analysis and extensive, highly accurate numerical calculations reveals the presence of only one positive-valued natural amplitude ("the normal sign pattern") for all ω ≥1/2 . More importantly, it is shown that unusual, weakly occupied natural orbitals (NOs) corresponding to additional positive-valued natural amplitudes emerge upon sufficient weakening of the confinement. These solitonic NOs, whose shapes remain almost invariant as their radial positions drift toward infinity upon the critical values of ω being approached from below, exhibit strong radial localization. Their asymptotic properties are extracted from the numerical data and their relevance to calculations on fully Coulombic systems is discussed.

  7. Biomimetics: nature based innovation

    National Research Council Canada - National Science Library

    Bar-Cohen, Yoseph

    2012-01-01

    "Based on the concept that nature offers numerous sources of inspiration for inventions related to mechanisms, materials, processes, and algorithms, this book covers the topic of biomimetics and the inspired innovation...

  8. Natural gas benefits

    International Nuclear Information System (INIS)

    1999-01-01

    The General Auditor in the Netherlands studied the natural gas policy in the Netherlands, as has been executed in the past decades, in the period 1997-1999. The purpose of the study is to inform the Dutch parliament on the planning and the backgrounds of the natural gas policy and on the policy risks with respect to the benefits for the Dutch State, taking into account the developments in the policy environment. The final conclusion is that the proposed liberalization of the national natural gas market will result in a considerable deprivation of income for the State in case the benefit policy is not adjusted. This report includes a reaction of the Dutch Minister of Economic Affairs and an afterword of the General Auditor. In the appendix an outline is given of the natural gas policy

  9. Natural Gas Market Hubs

    Data.gov (United States)

    Department of Homeland Security — A hub is a physical transfer point for natural gas where several pipelines are connected. A market center is a hub where the operator offers services that facilitate...

  10. Managing soil natural capital

    DEFF Research Database (Denmark)

    Cong, Ronggang; Termansen, Mette; Brady, Mark

    2017-01-01

    Farmers are exposed to substantial weather and market related risks. Rational farmers seek to avoid large losses. Future climate change and energy price fluctuations therefore make adaptating to increased risks particularly important for them. Managing soil natural capital—the capacity of the soil...... to generate ecosystem services of benefit to farmers—has been proven to generate the double dividend: increasing farm profit and reducing associated risk. In this paper we explore whether managing soil natural capital has a third dividend: reducing the downside risk (increasing the positive skewness of profit......). This we refer to as the prudence effect which can be viewed as an adaptation strategy for dealing with future uncertainties through more prudent management of soil natural capital. We do this by developing a dynamic stochastic portfolio model to optimize the stock of soil natural capital—as indicated...

  11. Lesson "Balance in Nature

    Science.gov (United States)

    Chapanova, V.

    2012-04-01

    Lesson "Balance in Nature" This simulation game-lesson (Balance in Nature) gives an opportunity for the students to show creativity, work independently, and to create models and ideas. It creates future-oriented thought connected to their experience, allowing them to propose solutions for global problems and personal responsibility for their activities. The class is divided in two teams. Each team chooses questions. 1. Question: Pollution in the environment. 2. Question: Care for nature and climate. The teams work on the chosen tasks. They make drafts, notes and formulate their solutions on small pieces of paper, explaining the impact on nature and society. They express their points of view using many different opinions. This generates alternative thoughts and results in creative solutions. With the new knowledge and positive behaviour defined, everybody realizes that they can do something positive towards nature and climate problems and the importance of individuals for solving global problems is evident. Our main goal is to recover the ecological balance, and everybody explains his or her own well-grounded opinions. In this work process the students obtain knowledge, skills and more responsible behaviour. This process, based on his or her own experience, dialogue and teamwork, helps the participant's self-development. Making the model "human↔ nature" expresses how human activities impact the natural Earth and how these impacts in turn affect society. Taking personal responsibility, we can reduce global warming and help the Earth. By helping nature we help ourselves. Teacher: Veselina Boycheva-Chapanova " Saint Patriarch Evtimii" Scholl Str. "Ivan Vazov"-19 Plovdiv Bulgaria

  12. More natural gas

    International Nuclear Information System (INIS)

    Leprince, P.; Valais, M.

    1993-01-01

    This paper reports that large resources and growing markets are the salient prospects of natural gas for the coming decades. The greater impact of natural gas on the worldwide energy market can become a reality if several scientific disciplines can be mobilized in order to succeed in cutting production costs. Modeling, mechanics of complex fluids, and physical chemistry of interfaces are basic disciplines for understanding and mastering the gas processing technologies

  13. Natural rubber: leather composites

    OpenAIRE

    Ravichandran,K.; Natchimuthu,N.

    2005-01-01

    Leather is a fibrous protein consisting of collagen in a three dimensionally crosslinked network. Chrome tanning of leather improves the appearance of leather but at the same time emits both solid and liquid chrome leather wastes. Scrap rubber recycling using untreated and neutralized leather fibrous particles in natural rubber has been studied. Vulcanization, mechanical, morphological and swelling properties of the natural rubber - scrap rubber composites containing neutralized leather have ...

  14. Natural Hazards, Second Edition

    Science.gov (United States)

    Rouhban, Badaoui

    Natural disaster loss is on the rise, and the vulnerability of the human and physical environment to the violent forces of nature is increasing. In many parts of the world, disasters caused by natural hazards such as earthquakes, floods, landslides, drought, wildfires, intense windstorms, tsunami, and volcanic eruptions have caused the loss of human lives, injury, homelessness, and the destruction of economic and social infrastructure. Over the last few years, there has been an increase in the occurrence, severity, and intensity of disasters, culminating with the devastating tsunami of 26 December 2004 in South East Asia.Natural hazards are often unexpected or uncontrollable natural events of varying magnitude. Understanding their mechanisms and assessing their distribution in time and space are necessary for refining risk mitigation measures. This second edition of Natural Hazards, (following a first edition published in 1991 by Cambridge University Press), written by Edward Bryant, associate dean of science at Wollongong University, Australia, grapples with this crucial issue, aspects of hazard prediction, and other issues. The book presents a comprehensive analysis of different categories of hazards of climatic and geological origin.

  15. Natural Resource Management Plan

    Energy Technology Data Exchange (ETDEWEB)

    Green, T. [Brookhaven National Laboratory (BNL), Upton, NY (United States); Schwager, K. [Brookhaven National Laboratory (BNL), Upton, NY (United States)

    2016-10-01

    This comprehensive Natural Resource Management Plan (NRMP) for Brookhaven National Laboratory (BNL) was built on the successful foundation of the Wildlife Management Plan for BNL, which it replaces. This update to the 2003 plan continues to build on successes and efforts to better understand the ecosystems and natural resources found on the BNL site. The plan establishes the basis for managing the varied natural resources located on the 5,265-acre BNL site, setting goals and actions to achieve those goals. The planning of this document is based on the knowledge and expertise gained over the past 15 years by the Natural Resources management staff at BNL in concert with local natural resource agencies including the New York State Department of Environmental Conservation, Long Island Pine Barrens Joint Planning and Policy Commission, The Nature Conservancy, and others. The development of this plan works toward sound ecological management that not only benefits BNL’s ecosystems but also benefits the greater Pine Barrens habitats in which BNL is situated. This plan applies equally to the Upton Ecological and Research Reserve (Upton Reserve). Any difference in management between the larger BNL area and the Upton Reserve are noted in the text.

  16. The system of nature

    CERN Document Server

    D'Holbac, Baron

    1999-01-01

    "The source of Man's unhappiness is his ignorance of Nature."D'Holbach believed that the misery he saw in mankind around him was caused by religion and its superstitious beliefs - that there was a God who controlled destiny and would reward or punish individuals. The System of Nature was written to replace these delusions with a schema of understanding based solely on the physical workings of nature. "Let Man study this nature, let him learn her laws, contemplate her energies." For d'Holbach the soul is only the physical body, understood from a certain point of view, which dies when the body dies. All the events and the nature of the world can be understood in terms of the motion and properties of matter; even the tiniest causes contribute to huge events - a simple change in the diet of an Emperor (or some other such insignificant cause), he suggests might have been capable of "saving kingdoms." For him, nature's laws are fixed and necessary, and if Man wants to find happiness it is best to accept this - if g...

  17. Turismo, cultura e desenvolvimento entre sustentabilidades e (insustentabilidades

    Directory of Open Access Journals (Sweden)

    Coriolano, Luzia Neide

    2008-10-01

    Full Text Available The tourism is one of the factors of the contemporary development and of the intensification of the social relationship, typical of the capitalist production model. It is an activity that requires the use and the appropriation of natural and cultural environments, produced by work, to turn it into spaces of leisure and consumption. It is part of the current dynamic of the capital, which creates territorialities, like an answer to the crises of global accumulation, involving the market, the State and the Civilian Society. It is also a service that supports the recovering of the human work, to the progressive growth of the industrial, commercial and financial work relationships of the several international markets, besides, as an export product, to be constituted in one of the main merchandise of the foreign trade. It is a sector accustomed to mythologies, sometimes is considered the solution capable to solve the socioeconomic problems of the outlying countries and sometimes is seen as a savage industry, capable to destroy the identity of communities. This article reflects about the meanings, contradictions and challenges related to tourism sustainability, facing of the meanings of the development adopted by the government policies and its disconnection with the culture policies that may contribute, in value and guidelines, to the construction of the solidary tourism, turned to the foment of the cultural diversity and the living quality of the local populations.

  18. Natural hazard management and sustainable development: a questionable link

    Directory of Open Access Journals (Sweden)

    Lauren Andres

    2009-03-01

    Full Text Available This article examines the nature of the possible link between natural hazards and sustainable development through a study of the area to the south of Grenoble in the French Alps, a zone subject to two major natural hazards: the extensive landslide known as the "Séchilienne Ruins" and flooding from the Romanche and Drac rivers. More specifically, the study analyzes the assumed transition from the management of natural hazards to the sustainable management of an area subject to natural hazards and is divided into three stages. Thus the link between natural hazards and sustainability is considered as: 1 an association that is entirely relative, 2 one that is logical but limited in the field, 3 one that is above all indirect. The interactions identified between risk and sustainability, in legislative as well as ideal and operational terms, are found to be complex and not necessarily explicit. They depend in particular on the juxtaposition of multiple territorial scales or spatial boundaries (national to local that bring into conflict the different strategies of the actors involved – from decision-makers to technical specialists.Cet article questionne la nature du lien envisageable entre risque naturel et développement durable à travers l’étude du territoire du sud grenoblois, soumis notamment à deux aléas naturels majeurs : le mouvement de terrain de grande ampleur dit des « Ruines de Séchilienne » et les probables crues de la Romanche et du Drac. Trois étapes structurent cette réflexion questionnant la transition supposée entre une gestion des risques naturels et une gestion durable des territoires soumis aux risques naturels : une association toute relative, un lien logique mais limité sur le terrain, une relation surtout indirecte. Les interactions identifiées, en termes législatifs mais aussi idéels et opérationnels, entre risque et durabilité se révèlent ainsi complexes et ne sont pas forcément explicites ; elles d

  19. LAS RELACIONES ENTRE CHILE Y CANADÁ DURANTE LA SEGUNDA GUERRA MUNDIAL: LAS PRIMERAS EXPERIENCIAS DE LOS DIPLOMÁTICOS CHILENOS

    Directory of Open Access Journals (Sweden)

    JOSÉ DEL POZO

    2005-06-01

    Full Text Available Basado en los informes diplomáticos chilenos, este artículo analiza el tema de las relaciones entre Chile y Canadá, en el período en que esos países avanzaron hacia el intercambio de embajadas, entre 1941 y 1944. En él se explica que hasta antes de esos años, Canadá solo tenía un interés comercial en América Latina, mientras que para Chile era más importante el plano diplomático, a causa de su interés en reforzar su posición internacional, un tanto debilitada desde comienzos del siglo XX. Las razones que llevaron a ambos países a tomar esa decisión estuvieron directamente relacionadas con el contexto de la Segunda Guerra Mundial. Una vez instaladas las embajadas, se comentan las impresiones que tuvieron los primeros representantes de Chile en Ottawa acerca de lo que era Canadá, lo que muestra las dificultades en comprender el funcionamiento de un país bastante distinto a Chile. El artículo concluye que el establecimiento de embajadas no trajo un incremento significativo a corto plazo en las relaciones entre ambos países, ni a nivel comercial ni políticoBased on the reports of the Chilean foreign mission in Canada, this article deals with the relations between Chile and Canada during the period in which both countries decided to exchange embassies. It explains that before those years, Canada was interested in Latin America mainly in commercial topics, while Chile showed more interest on the diplomatic side. This difference is due to the fact that Chile found itself in a rather vulnerable position before 1939. The Second World War was the main reason that led to the establishment of embassies in both countries. The article analyzes also the first impressions of the Chilean representatives in Ottawa, showing that it was not easy for Chilieans to understand the nature of a country like Canada. It ends saying that in the short term, the establishment of embassies did not lead to an increase in the commercial or the political

  20. Analyse de régression quantile de la relation entre la langue et l’intervalle entre les grossesses au Québec (Canada

    Directory of Open Access Journals (Sweden)

    Nathalie Auger

    2018-01-01

    Full Text Available Introduction. On sait que les intervalles courts comme les intervalles longs entre les grossesses sont associés à des issues périnatales défavorables, comme des fausses couches et des accouchements prématurés, mais les différences culturelles à ce sujet sont mal connues. Repérer les inégalités culturelles dans les intervalles entre les grossesses est nécessaire afin d'améliorer les résultats relatifs à la santé de la mère et de l’enfant. Nous avons ainsi évalué les intervalles entre les grossesses chez les anglophones et les francophones du Québec. Méthodologie. Nous avons obtenu les dossiers de naissance de tous les enfants nés au Québec entre 1989 et 2011. Nous avons recensé 571 461 femmes ayant eu au moins deux naissances et déterminé l’intervalle entre leurs grossesses. Les intervalles courts entre les grossesses (moins de 18 mois ont été définis comme étant le 20e percentile de la distribution, et les intervalles longs (60 mois ou plus, comme le 80e percentile. À l’aide de régressions quantiles, nous avons évalué l’association entre la langue et les intervalles courts et longs, ajustés en fonction des caractéristiques de la mère. Nous avons évalué les différences au fil du temps et selon l’âge de la mère pour les groupes défavorisés, qui ont été définis par l’absence de diplôme d’études secondaires, la résidence en milieu rural et le fait de vivre dans un quartier défavorisé matériellement. Résultats. Dans les modèles de régression ajustés, les anglophones sans diplôme d’études secondaires avaient des intervalles plus courts de 1,0 mois (intervalle de confiance [IC] à 95 % : −1,5 à −0,4 par rapport à leurs homologues francophones au 20e percentile de la distribution et plus longs de 1,9 mois (−0,5 à 4,3 au 80e percentile. Les résultats étaient similaires pour les anglophones des régions rurales et des quartiers matériellement défavorisés. Les

  1. INCIDENCIA DE INCENDIOS SOBRE LA VEGETACIÓN DE CUNDINAMARCA Y BOGOTÁ D.C, ENTRE 2001 Y 2010

    Directory of Open Access Journals (Sweden)

    Diego Amaya Villabona

    2012-01-01

    Full Text Available En el avance del uso de teledetección como método para determinar la dinámica de incendios en el país y como complemento a trabajos desarrollados a nivel nacional, se analizó la distribución temporal y espacial de incendios y coberturas vegetales del departamento de Cundinamarca, la ciudad de Bogotá D.C y en las diferentes categorías de conservación y manejo, en los últimos 10 años. A partir de datos procesados por FIRMS  y analizados en ArcGIS 10 y PSAW Stadistics 18, se encontró que los incendios en el área de estudio se mantienen dentro del patrón nacional, destacando además que la incidencia es causada por la poca precipitación y la intervención del hombre en espacios naturales. Las poblaciones más afectadas son Caparrapí 159 incendios, Bogotá 152 incendios y Guaduas 101 incendios. Bogotá registra la mayoría de sus incendios en la parte sur, en la localidad de Sumapaz. En cuanto a áreas protegidas del departamento el  Parque Nacional Natural Sumapaz con 84 registros encabeza, seguido por el Distrito de Manejo Integrado Cuchilla de San Antonio con 21 registros y la Reserva Forestal Protectora Paramo Grande con 9 nueve registros. Entre la vegetación afectada se destacan los pastos, arbustos, matorrales y sus mosaicos, resaltando alto valores de incidencia sobre la vegetación de paramo y subpáramo. Las partes centro y noroccidentales, sur y surorientales, del departamento, son las que presentan más conflagraciones, y que en su mayoría se ubican entre los 0 a 1000 msnm y 3000 a 4000 msnm.

  2. RELACIÓN ENTRE DIFERENTES PRUEBAS DE CAMPO: FUERZA, POTENCIA Y VELOCIDAD

    Directory of Open Access Journals (Sweden)

    Jessenia Hernández Elizondo

    2003-12-01

    Full Text Available Esta investigación tuvo como propósito principal el encontrar por medio de pruebas en las variables de fuerza, potencia y velocidad, la relación matemática existente entre estos tres constructos. Participaron 56 sujetos varones con edades entre 18 y 25 años. Con el fin de responder al objetivo del estudio, se les aplicaron pruebas de campo de fuerza (1RM de sentadilla completa y repeticiones máximas al 80% 60% 40% y 20%, de velocidad (30 metros lanzados y 30 metros sin impulso, y de potencia (salto vertical con contra-movimiento SVCM, salto vertical sin impulso SVSI y salto vertical con caída SVCC, para correlacionar las diferentes pruebas entre sí. Los datos fueron analizados por medio de la correlación de Pearson (r, para correlacionar parejas de pruebas y correlación canónica (Rc para correlacionar grupos de variables. A partir de cada correlación se obtuvo la varianza explicada (r2 la cual indica el porcentaje de relación compartida en escala de 0-100 que existe entre las pruebas. Según los datos obtenidos, no existe relación significativa (2.1% entre las pruebas de salto-sentadilla, ni relación significativa (5.1% entre las pruebas de velocidad- sentadilla, mientras que la relación salto- velocidad (62%, fue estadísticamente significativa (p < 0.05. La implicación de estos resultados podrían respaldar la idea de que la relación teórica que existe entre estos constructos, no es completamente cierta cuando éstos son medidos por medio de pruebas de campo.

  3. The third border of health: the 'natural' ethics

    OpenAIRE

    Schramm, Fermin R.

    1995-01-01

    Este trabalho pretende discutir a pertinência de uma ética natural complexa para o campo da saúde, em particular em saúde pública, escapando das principais disjunções herdadas da tradição moderna, tais como sujeito/objeto, público/privado, valor em si/valor por si. Considera-se, portanto, as contribuições trazidas pela epistemologia da complexidade que, ao conceber a constelação conceituai do vínculo e da possibilidade - que se delineia entre 'primeira natureza' (bioecológica) e 'segunda natu...

  4. Erodibilidade de um cambilosolo húmico sob chuva natural

    OpenAIRE

    Schick, Jefferson; Bertol, Ildegardis; Cogo, Neroli Pedro; Paz González, Antônio

    2014-01-01

    A estimativa de perdas de solo é fundamental para o planejamento conservacionista. Com essa finalidade, destaca-se no Brasil o uso da Equação Universal de Perdas de Solo (USLE), para cuja utilização há escassez de dados obtidos de acordo com o método-padrão desse modelo. Entre os fatores que compõem a USLE, a erodibilidade do solo (fator K) é de difícil obtenção em razão da necessidade de conduzir experimentos em campo por longo tempo sob chuva natural. Com o objetivo de quantificar a erodibi...

  5. Erodibilidade de um Cambissolo Húmico sob chuva natural

    OpenAIRE

    Schick, Jefferson; Bertol, Ildegardis; Cogo, Neroli Pedro; González, Antonio Paz

    2014-01-01

    A estimativa de perdas de solo é fundamental para o planejamento conservacionista. Com essa finalidade, destaca-se no Brasil o uso da Equação Universal de Perdas de Solo (USLE), para cuja utilização há escassez de dados obtidos de acordo com o método-padrão desse modelo. Entre os fatores que compõem a USLE, a erodibilidade do solo (fator K) é de difícil obtenção em razão da necessidade de conduzir experimentos em campo por longo tempo sob chuva natural. Com o objetivo de quantificar a erodibi...

  6. Natural gas prices

    International Nuclear Information System (INIS)

    Johnson, W.A.

    1990-01-01

    Since the 1970s, many electric utilities and industrial boiler fuel users have invested in dual fuel use capability which has allowed them to choose between natural gas, residual fuel oil, and in some instances, coal as boiler fuels. The immediate reason for this investment was the need for security of supply. Wellhead regulation of natural gas prices had resulted in shortages during the 1970s. Because many industrial users were given lowest priority in pipeline curtailments, these shortages affected most severely boiler fuel consumption of natural gas. In addition, foreign supply disruptions during the 1970s called into question the ready availability of oil. Many boiler fuel users of oil responded by increasing their ability to diversify to other sources of energy. Even though widespread investment in dual fuel use capability by boiler fuel users was initially motivated by a need for security of supply, perhaps the most important consequence of this investment was greater substitutability between natural gas and resid and a more competitive boiler fuel market. By the early 1980s, most boiler fuel users were able to switch from one fuel to another and often did for savings measured in pennies per MMBtu. Boiler fuel consumption became the marginal use of both natural gas and resid, with coal a looming threat on the horizon to both fuels

  7. Natural Dietary Phytosterols.

    Science.gov (United States)

    Racette, Susan B; Lin, Xiaobo; Ma, Lina; Ostlund, Richard E

    2015-01-01

    Most clinical phytosterol studies are performed by adding purified supplements to smaller phytosterol amounts present in the natural diet. However, natural dietary phytosterols themselves may also have important effects on cholesterol metabolism. Epidemiological work using food frequency questionnaires to estimate dietary intake suggest that extremes of normal consumption may be associated with 3-14% changes in LDL cholesterol. Standardized food databases do not have enough phytosterol values to allow calculation of phytosterol intake for individuals outside of specialized studies. Natural diets contain phytosterol amounts ranging from less than 60 mg/2000 kcal to over 500 mg/2000 kcal. Physiological studies in which whole body cholesterol metabolism is investigated show large effects of natural dietary phytosterols on cholesterol absorption efficiency, cholesterol biosynthesis and cholesterol excretion which exceed the magnitude of changes in LDL cholesterol. The dual effects of natural phytosterols on both LDL-C and whole body cholesterol metabolism need to be considered in relating them to potential protection from coronary heart disease risk.

  8. Symmetries in nature

    International Nuclear Information System (INIS)

    Mainzer, K.

    1988-01-01

    Symmetry, disymmetry, chirality etc. are well-known topics in chemistry. But they cannot only be found on the molecular level of matter. Atoms and elementary particles in physics are also characterized by particular symmetry groups. Even living organisms and populations on the macroscopic level have functional properties of symmetry. The whole physical, chemical, and biological evolution seems to be regulated by the emergence of new symmetries and the breaking down of old ones. One is reminded of Heisenberg's famous statement: 'Die letzte Wurzel der Erscheinungen ist also nicht die Materie, sondern das mathematische Gesetz, die Symmetrie, die mathematische Form' (Wandlungen in den Grundlagen der Naturwissenschaften, 1959). Historically the belief in symmetry and simplicity of nature has a long philosophical tradition from the Pythagoreans, Plato and Greek astronomers to Kepler and modern scientists. Today, 'symmetries in nature' is a common topic of mathematics, physics, chemistry, and biology. A lot of Nobel prizes were given in honour of inquiries concerning symmetries in nature. The fascination of symmetries is not only motivated by science, but by art and religion too. Therefore 'symmetris in nature' is an interdisciplinary topic which may help to overcome C.P. Snow's 'Two Cultures' of natural sciences and humanities. (author) 17 refs., 21 figs

  9. Symmetries in nature

    Energy Technology Data Exchange (ETDEWEB)

    Mainzer, K

    1988-05-01

    Symmetry, disymmetry, chirality etc. are well-known topics in chemistry. But they cannot only be found on the molecular level of matter. Atoms and elementary particles in physics are also characterized by particular symmetry groups. Even living organisms and populations on the macroscopic level have functional properties of symmetry. The whole physical, chemical, and biological evolution seems to be regulated by the emergence of new symmetries and the breaking down of old ones. One is reminded of Heisenberg's famous statement: 'Die letzte Wurzel der Erscheinungen ist also nicht die Materie, sondern das mathematische Gesetz, die Symmetrie, die mathematische Form' (Wandlungen in den Grundlagen der Naturwissenschaften, 1959). Historically the belief in symmetry and simplicity of nature has a long philosophical tradition from the Pythagoreans, Plato and Greek astronomers to Kepler and modern scientists. Today, 'symmetries in nature' is a common topic of mathematics, physics, chemistry, and biology. A lot of Nobel prizes were given in honour of inquiries concerning symmetries in nature. The fascination of symmetries is not only motivated by science, but by art and religion too. Therefore 'symmetris in nature' is an interdisciplinary topic which may help to overcome C.P. Snow's 'Two Cultures' of natural sciences and humanities. (author) 17 refs., 21 figs.

  10. Natural gas purchasing

    International Nuclear Information System (INIS)

    Freedenthal, C.

    1993-01-01

    In recent years, natural gas has gained new momentum because of changes in marketing and regulations. The gas industry has always received an inordinate amount of regulatory control starting at the well head where the gas is produced to the consuming burner tip. Regulations have drastically impacted the availability of gas. Changes in the marketing and regulations have made the natural gas market sensitive at the point of production, the well head. Now, with plentiful supply and ease of transportation to bring the gas from the producing fields to the consumer, natural gas markets are taking advantage of the changed conditions. At the same time, new markets are developing to take advantage of the changes. This section shows consumers, especially the energy planners for large buyers of fuel, the advantages, sources and new methods of securing natural gas supplies. Background on how natural gas is produced and marketed are given. This section lists marketing sources, regulatory agencies and information groups available to help buyers and consumers of this important fuel for US industries and residences. 7 figs., 8 tabs

  11. Naturalness and Animal Welfare.

    Science.gov (United States)

    Yeates, James

    2018-04-05

    Naturalness is considered important for animals, and is one criterion for assessing how we care for them. However, it is a vague and ambiguous term, which needs definition and assessments suitable for scientific and ethical questions. This paper makes a start on that aim. This paper differentiates the term from other related concepts, such as species-typical behaviour and wellbeing. It identifies contingent ways in which naturalness might be used, as: (i) prompts for further welfare assessment; (ii) a plausible hypothesis for what safeguards wellbeing; (iii) a threshold for what is acceptable; (iv) constraints on what improvements are unacceptable; and (v) demarcating what is not morally wrong, because of a lack of human agency. It then suggests an approach to evaluating animals' behaviour that is quantitative, is based on reality, and which assesses naturalness by degrees. It proposes classing unaffected wild populations as natural by definition. Where animals might have been affected by humans, they should be compared to the closest population(s) of unaffected animals. This approach could allow us both to assess naturalness scientifically, and to make practical decisions about the behaviour of domestic animals.

  12. Natural gas deregulation

    International Nuclear Information System (INIS)

    Ronchi, M.

    1993-01-01

    With the aim of establishing realistic options for deregulation in the natural gas industry, this paper first considers the structural evolution of this industry and evidences how it differs from the petroleum industry with which it exhibits some essential characteristics in common. This comparison is made in order to stress that, contrary to popular belief, that which is without doubt good for the petroleum industry is not necessarily so also for the natural gas industry. The paper concludes with separate analyses of the natural gas markets in the principal industrialized countries. Arguments are provided to show that the 'soft' deregulation option for the natural gas industry is not feasible, and that 'total' deregulation instead, backed by the passing of a suitable package of anti-trust laws 'unbundling' the industry's four major activities, i.e., production, storage, primary and secondary distribution, is the preferable option. The old concept of guaranteed supplies for minor users of natural gas should give way to the laws of supply and demand governing inter-fuel competition ensured through the strict supervision of vigilance committees

  13. Okulo natural reactors

    International Nuclear Information System (INIS)

    Yamakawa, Minoru

    1993-01-01

    French CEA has reported in 1972 that natural nuclear reactors existed in Okulo uranium deposit in Gabon in Africa, that caused nuclear fission chain reaction (Okulo phenomena) spontaneously two billion years ago. The fission products and transuranic elements produced by the natural reactors have been preserved in strata without movement while subjected to geological phenomena for such very long years. 16 zones of the natural reactors have been discovered so far. The geological features of the Okulo uranium deposit are explained. The total amount of 235 U lost by the chain reaction was estimated to be about 6t, and the fission products were about 6t. The Okulo phenomena offered the valuable results of the synthetic formation disposal test that the nature has carried out for such long years. The significance of the study on natural analog is discussed. Organic substances and the mechanism of holding and movement of uranium and fission nuclides, the stability of uraninite and the age measurement of the deposit by Nd-Sm process are reported as the main results. (K.I.)

  14. DIVERSIDAD GENÉTICA ENTRE SUBPOBLACIONES RACIALES BOVINAS DE COSTA RICA

    Directory of Open Access Journals (Sweden)

    Marco Martínez

    2015-01-01

    Full Text Available El objetivo del estudio fue cuantificar la diversidad genética entre 16 subpoblaciones raciales bovinas de Costa Rica, con base en 1412 muestras de ADN bovino de todo el país, evaluadas mediante 18 marcadores microsatélites. El número promedio de alelos (Na por locus dentro de raza fue de 10,3, que varían entre 8 (Holstein×Jersey y 13 (Criolla para doble propósito. El número promedio de alelos efectivo (Ne fue de 5,04, con cambios entre 4,18 (Jersey y 5,64 (Bos taurus×Bos indicus. La heterocigosidad observada promedio fue de 0,77, variando entre 0,73 (Jersey y 0,81 (Bos taurus×Bos indicus. La heterocigosidad esperada (He promedio fue de 0,78, que oscilan entre 0,74 (Jersey y Holstein×Jersey y 0,81 (Bos taurus×Bos indicus, Criolla para doble propósito y Cruces para doble propósito. El contenido de información polimórfica (PIC fue de 0,76, con variaciones entre 0,71 (Jersey y Holstein×Jersey y 0,79 (Criollas para doble propósito y Cruces para doble propósito. El FIS promedio fue de 0,02, con oscilaciones entre -0,03 (Holstein×Jersey a 0,04 (Brahman, Criolla para carne y Cruces para leche. La desviación del equilibrio Hardy Weinberg no fue significativa (p>0,05 en la mayoría de los loci para las subpoblaciones raciales. El subgrupo con mayor número de loci en desequilibrio fue Jersey (8 loci, mientras que los subgrupos Bos taurus×Bos indicus, Criolla para leche y Holstein×Jersey presentaron solo 1 locus en desequilibrio. Los índices de fijación FIS (0,02, FIT (0,05 y FST (0,03 indicaron cierta tendencia hacia la homocigosidad. Los dendrogramas mostraron 3 agrupaciones raciales claramente diferenciadas que coinciden con las razas de origen Bos taurus, Bos indicus y sus respectivos cruces. Los resultados del análisis indicaron que el número de microsatélites empleados sí permitió establecer una discriminación clara a nivel de las frecuencias alélicas y en la distribución del tamaño de los alelos entre las

  15. Hauntings of Human Nature

    DEFF Research Database (Denmark)

    Clasen, Mathias

    2017-01-01

    The central conflicts of Stephen King’s horror novel The Shining are rooted in human nature and reflect evolutionarily recurrent adaptive problems—the problem of balancing conflicting evolved motives, such as motives for selfish status striving versus motives for affiliative nurturing behavior......, and the problem of surviving the hostile forces of nature. Moreover, the supernatural elements of the novel resonate with evolved intuitions about non-material, moral forces at work in the world. That is why the novel continues to engage readers worldwide. Most critics, however, have overlooked or distorted...... the psychological underpinnings of the novel and the crucial function of the supernatural elements in the meaning structure of the novel. Hence we need an evolutionary psychological perspective which builds on recent findings in the sciences of human nature to account for the novel’s meaning, effects, and continued...

  16. Nature/culture/seawater.

    Science.gov (United States)

    Helmreich, Stefan

    2011-01-01

    Seawater has occupied an ambiguous place in anthropological categories of "nature" and "culture." Seawater as nature appears as potentiality of form and uncontainable flux; it moves faster than culture - with culture frequently figured through land-based metaphors - even as culture seeks to channel water's (nature's) flow. Seawater as culture manifests as a medium of pleasure, sustenance, travel, disaster. I argue that, although seawater's qualities in early anthropology were portrayed impressionistically, today technical, scientific descriptions of water's form prevail. For example, processes of globalization - which may also be called "oceanization" - are often described as "currents," "flows," and "circulations." Examining sea-set ethnography, maritime anthropologies, and contemporary social theory, I propose that seawater has operated as a “theory machine” for generating insights about human cultural organization. I develop this argument with ethnography from the Sargasso Sea and in the Sea Islands. I conclude with a critique of appeals to water's form in social theory.

  17. nature in the city

    Directory of Open Access Journals (Sweden)

    Elena Grigoryeva

    2016-08-01

    The object of the issue is a wonderful museum on the Kulikovo Field designed by Sergey Gnedovsky. The unusual architecture of the new museum makes it akin to the earth’s tectonic fault caused by an intolerable tension in expectation of the battle (pp. 113-123. Oleg Yavein and Ilya Lezhava bring us back to the classic of the 20th century Mies van der Rohe and his unique dialogue with nature (pp. 162-175. Relationship between architecture and nature is a rich and limitless theme, like both of these substances. That is why the new Project Baikal issue contains, as usual, more questions than answers. Such is the nature of our journal.

  18. Natural Gas Regulation

    International Nuclear Information System (INIS)

    1995-01-01

    The regulation of Natural Gas. Natural gas Regulation clarifies and consolidates the legal and institutional framework for development of the industry through six principal elements: 1) Establishment of a vision of the industry. 2) Development of regulatory objectives. 3) Determination of relationships among industry participants. 4) Clear specification of the role of PEMEX in the industry. 5) Definition of the functions of the Regulatory authority. 6) Creation of a transition regime. In parallel with the development of the substantive legal framework, the law of the Comision Reguladora de Energia (CRE) was also enacted by Congress in October 1995 to strength the institutional framework and implement the legal changes. This law defines the CRE as an agency of the Energy Ministry with technical, operational, and budgetary autonomy, and responsibility for implementing natural gas industry regulation. (Author)

  19. Natural resource damage assessment

    International Nuclear Information System (INIS)

    Seddelmeyer, J.

    1991-01-01

    The assessment and collection of natural resource damages from petroleum and chemical companies unfortunate enough to have injured publicly owned natural resources is perhaps the most rapidly expanding area of environmental liability. The idea of recovering for injury to publicly owned natural resources is an extension of traditional common law tort concepts under which a person who negligently injures another or his property is called upon to compensate the injured party. Normally, once liability has been established, it is a fairly straightforward matter to calculate the various elements of loss, such as the cost to repair or replace damaged property, or medical expenses, and lost income. More difficult questions, such as the amount to be awarded for pain and suffering or emotional distress, are left to the jury, although courts limit the circumstances in which the jury is permitted to award such damages

  20. Livelihoods and natural resources

    DEFF Research Database (Denmark)

    Cotta, Jamie Nicole

    generation and shock coping. In addition, a multi-method approach (utilizing income, transect inventory and free-list data) demonstrates the significant economic importance of agroforestry environments, particularly managed fallows, when compared with natural forests. Interventions aimed at sustaining...... by both high vulnerability (e.g., residents with flood-vulnerable cultivation) and limited availability/diversity of environmentally-sourced coping products. Finally, future research and development initiatives should take into account not just natural forests or agricultural systems, but also......This dissertation research contributes to the emerging body of knowledge on the economic contributions of natural resources to rural livelihoods, including their role in household shock coping, in the humid tropics. Data from one of the first comprehensive household income quantifications...

  1. Natural photonic crystals

    Energy Technology Data Exchange (ETDEWEB)

    Vigneron, Jean Pol, E-mail: jean-pol.vigneron@fundp.ac.be [Research Center in Physics of Matter and Radiation (PMR), University of Namur (FUNDP), rue de Bruxelles, 61, B-5000 Namur (Belgium); Simonis, Priscilla [Research Center in Physics of Matter and Radiation (PMR), University of Namur (FUNDP), rue de Bruxelles, 61, B-5000 Namur (Belgium)

    2012-10-15

    Photonic structures appeared in nature several hundred millions years ago. In the living world, color is used for communication and this important function strongly impacts the individual chances of survival as well as the chances to reproduce. This has a statistical influence on species populations. Therefore, because they are involved in evolution, natural color-generating structures are - from some point of view - highly optimized. In this short review, a survey is presented of the development of natural photonic crystal-type structures occurring in insects, spiders, birds, fishes and other marine animals, in plants and more, from the standpoint of light-waves propagation. One-, two-, and three-dimensional structures will be reviewed with selected examples.

  2. Antiplasmodial Natural Products

    Directory of Open Access Journals (Sweden)

    Cláudio R. Nogueira

    2011-03-01

    Full Text Available Malaria is a human infectious disease that is caused by four species of Plasmodium. It is responsible for more than 1 million deaths per year. Natural products contain a great variety of chemical structures and have been screened for antiplasmodial activity as potential sources of new antimalarial drugs. This review highlights studies on natural products with antimalarial and antiplasmodial activity reported in the literature from January 2009 to November 2010. A total of 360 antiplasmodial natural products comprised of terpenes, including iridoids, sesquiterpenes, diterpenes, terpenoid benzoquinones, steroids, quassinoids, limonoids, curcubitacins, and lanostanes; flavonoids; alkaloids; peptides; phenylalkanoids; xanthones; naphthopyrones; polyketides, including halenaquinones, peroxides, polyacetylenes, and resorcylic acids; depsidones; benzophenones; macrolides; and miscellaneous compounds, including halogenated compounds and chromenes are listed in this review.

  3. Natural rubber: leather composites

    Directory of Open Access Journals (Sweden)

    K. Ravichandran

    2005-06-01

    Full Text Available Leather is a fibrous protein consisting of collagen in a three dimensionally crosslinked network. Chrome tanning of leather improves the appearance of leather but at the same time emits both solid and liquid chrome leather wastes. Scrap rubber recycling using untreated and neutralized leather fibrous particles in natural rubber has been studied. Vulcanization, mechanical, morphological and swelling properties of the natural rubber - scrap rubber composites containing neutralized leather have been discussed. Use of chrome leather particles has been found to improve the consumption of scrap rubber powder in natural rubber formulations. Polymer composites based on leather wastes as fillers are reported to be useful for many applications such as in construction materials, automobile interior moldings, heat and sound insulating boards, shoe soles, flooring materials and moldings with good anti-static properties, air permeability and good appearances.

  4. Canadian natural gas

    International Nuclear Information System (INIS)

    Lucas, D.A.

    1991-01-01

    Canada's natural gas industry enjoys a quiet confidence as it looks ahead to the 1990s. In this paper, the author explains why, despite some critical uncertainties, the optimism endures. Reviewing the current conditions of supply, production, consumption, pipelines, and pipeline expansion plans, the author contends that the New World of the 1990s will belong to natural gas. The author's assessment of natural gas markets proceeds far beyond the borders of Canada. The author examines the determinants of gas prices throughout North America and he identifies the one force that promises to seize almost complete control of gas prices throughout the continent. While the analysis points out the attributes of this new pricing regime, it also names the obstacles that could prevent this emerging mechanism from assuming its anticipated position

  5. Natural photonic crystals

    International Nuclear Information System (INIS)

    Vigneron, Jean Pol; Simonis, Priscilla

    2012-01-01

    Photonic structures appeared in nature several hundred millions years ago. In the living world, color is used for communication and this important function strongly impacts the individual chances of survival as well as the chances to reproduce. This has a statistical influence on species populations. Therefore, because they are involved in evolution, natural color-generating structures are - from some point of view - highly optimized. In this short review, a survey is presented of the development of natural photonic crystal-type structures occurring in insects, spiders, birds, fishes and other marine animals, in plants and more, from the standpoint of light-waves propagation. One-, two-, and three-dimensional structures will be reviewed with selected examples.

  6. Natural gas's hottest spot

    International Nuclear Information System (INIS)

    Peterson, T.

    1993-01-01

    This paper reviews the growing power and economic strength of Enron Corp., a natural gas distributor and exploration company. The paper reviews the policy of the company to exploit deregulation at home and privatization of all sorts of energy companies abroad. Enron is actively building its own power plants in the US and has successfully boosted their profits by 20 percent in what was considered a flat natural gas market. The paper goes on to discuss the company's view of the new energy tax and how it should benefit natural gas companies as a whole. Finally the paper reviews the contracting procedures of the company to secure long-term fixed price contracts in a volatile market which precludes most companies from taking the risk

  7. Anthropologie de la nature

    OpenAIRE

    Descola, Philippe

    2010-01-01

    En apparence, l’anthropologie de la nature est une sorte d’oxymore puisque, depuis plusieurs siècles en Occident, la nature se caractérise par l’absence de l’homme, et l’homme par ce qu’il a su surmonter de naturel en lui. Mais la nature n’existe pas comme une sphère de réalités autonomes pour tous les peuples. En postulant une distribution universelle des humains et des non-humains dans deux domaines ontologiques séparés, nous sommes bien mal armés pour analyser tous ces systèmes d’objectiva...

  8. Aborto entre alunas e funcionárias de uma universidade brasileira

    Directory of Open Access Journals (Sweden)

    Hardy Ellen

    1993-01-01

    Full Text Available No Brasil existem poucas informações sobre o aborto provocado e suas características na população. A dificuldade em se obter dados confiáveis deve-se: à sua ilegalidade, e também ao fato de que a maioria dos estudos é realizada em hospitais. Assim, em 1990, foi realizada pesquisa entre alunas da graduação e funcionárias de uma universidade brasileira. Os dados foram obtidos por meio de questionário, auto-respondido, para devolução por correio, anonimamente. Os resultados apresentados referem-se à freqüência do aborto provocado nesta população. Encontrou-se que quatro vezes menos alunas do que funcionárias tinham engravidado alguma vez (15% e 65%; 9% das alunas e 14% das funcionárias tiveram aborto provocado. Entre as mulheres que engravidaram alguma vez, as alunas tiveram mais aborto provocado do que as funcionárias (59% e 20%. Quando controladas por grupo etário as diferenças entre as alunas e funcionárias mantiveram-se. Entretanto, entre as alunas, o aborto provocado foi mais freqüente entre as mais jovens.

  9. PENGARUH PANJANG ENTRES TERHADAP KEBERHASILAN PENYAMBUNGAN TANAMAN ALPUKAT (PERSEA AMERICANA MILL.

    Directory of Open Access Journals (Sweden)

    Dirgahani Putri

    2016-06-01

    Full Text Available Beragamnya hasil produksi dan kualitas buah alpukat dapat diperbaiki dengan metode penyambungan. Penyambungan merupakan kegiatan untuk mengga-bungkan dua atau lebih sifat unggul dalam satu tanaman. Penelitian ini bertujuan mengetahui pengaruh berbagai panjang entres terhadap keberhasilan penyam-bungan tanaman alpukat. Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok dengan lima perlakuan panjang entres, yaitu 3 cm, 6 cm, 9 cm, 12 cm, dan 15 cm.Setiap perlakuan diulang sebanyak lima kali dan setiap perlakuan terdiri atas lima tanaman;sehingga jumlah totalnya sebanyak 125 tanaman. Pengamatan dilakukan pada peubah persentase sambung hidup, jumlah tunas, panjang tunas, jumlah daun, dan diameter batang atas. Berbagai panjang entres tidak memberikan pengaruh yang nyata pada peubah persentase sambung hidup, panjang tunas terpanjang, jumlah daun, dan diameter batang atas tetapi berpengaruh nyata pada peubah jumlah tunas. Perlakuan panjang entres 15 cm memberikan hasil tertinggi untuk jumlah tunas, panjang tunas, jumlah daun dan diameter batang atas, sedangkan untuk persentase hidup perlakuan 6 cm, 12 cm memberikan hasil tertinggi yaitu 100%. Perlakuan panjang entres 3 cm adalah perlakuan yang memberikan pengaruh yang rendah pada persentase sambung hidup (yaitu 92%, peubah jumlah tunas, panjang tunas, serta diameter batang atas pada berbagai umur tanaman alpukat.

  10. TINGKAT HIDUP DAN PERTUMBUHAN AVOKAD HASIL SAMBUNG PUCUK ENTRES YANG DISIMPAN DALAM PELEPAH BATANG PISANG

    Directory of Open Access Journals (Sweden)

    Lazarus Agus Sukamto

    2014-01-01

    Full Text Available Buah avokad mempunyai kandungan nutrisi yang sangat baik bagi masyarakat khususnya kandungan lemak tidak jenuh dan protein yang tertinggi bila dibandingkan jenis buah lain. Untuk tujuan komersial, tanaman avokad perlu diperbanyak secara vegetatif untuk memperoleh bibit yang telah terbukti kualitas dan kuantitas tinggi, serta berbuah lebih awal. Keberhasilan penyambungan sangat dipengaruhi oleh kesegaran entres. Penelitian ini bertujuan untuk mengetahui keberhasilan dan pertumbuhan sambungan tanaman avokad dengan menggunakan entres yang disimpan dalam pelepah batang pisang selama dua hingga sembilan hari. Parameter pengamatan meliputi persentase tingkat hidup sambungan, pertumbuhan panjang, jumlah daun, jumlah cabang, dan panjang percabangan batang atas setiap bulan sampai enam bulan. Data pertumbuhan dianalisis secara statistik dengan ANOVA dan uji lanjut Duncan. Lama penyimpanan entres berpengaruh terhadap tingkat hidup hasil sambungan dan pertumbuhan batang atas avokad. Rerata tingkat hidup bibit sambungan avokad terus menurun dari 99,5% pada umur satu bulan sampai 71% pada umur enam bulan setelah penyambungan, tetapi tidak mengalami penurunan setelah lima bulan penyambungan. Penyimpanan entres avokad dalam pelepah pisang dapat dipertahankan kesegarannya selama sembilan hari, yaitu tingkat hidup sambungan 60% - 84% enam bulan setelah penyambungan. Ada kecenderungan bahwa makin lama penyimpanan entres, makin menurun pertumbuhan batang atas avokad; sebaliknya makin lama umur penyambungan, makin meningkat pertumbuhan batang atas avokad, kecuali jumlah cabangnya yang relatif tidak meningkat setelah dua bulan penyambungan.

  11. The natural radiation background

    International Nuclear Information System (INIS)

    Duggleby, J.C.

    1982-01-01

    The components of the natural background radiation and their variations are described. Cosmic radiation is a major contributor to the external dose to the human body whilst naturally-occurring radionuclides of primordial and cosmogenic origin contribute to both the external and internal doses, with the primordial radionuclides being the major contributor in both cases. Man has continually modified the radiation dose to which he has been subjected. The two traditional methods of measuring background radiation, ionisation chamber measurements and scintillation counting, are looked at and the prospect of using thermoluminescent dosimetry is considered

  12. Natural User Interfaces

    OpenAIRE

    Câmara , António

    2011-01-01

    Dissertação de Mestrado em Engenharia Informática apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra This project’s main subject are Natural User Interfaces. These interfaces’ main purpose is to allow the user to interact with computer systems in a more direct and natural way. The popularization of touch and gesture devices in the last few years has allowed for them to become increasingly common and today we are experiencing a transition of interface p...

  13. Atmospheric natural radioactivity outdoors

    International Nuclear Information System (INIS)

    Renoux, A.

    1985-01-01

    Following a short account of natural atmospheric radioactivity, radon concentrations are given as well as their variations with time obtained by means of a original apparatus developped in Brest. The radioactive equilibrium of radon and its daughters is then considered, many experiments demonstrating that equilibrium is seldom reached even for 218 Po (RaA). Finally, some characteristics of natural radioactive aerosols are studied: charge, particle size distribution (demonstrating they are fine aerosols since only 30 per cent are made of particles with radii exceeding 0,1 μm) [fr

  14. Natural atmospheric radioactivity

    International Nuclear Information System (INIS)

    Renoux, A.

    1986-01-01

    After having summed up the different old or new units, used in radioactivity and radioprotection, the origins of atmospheric radioactivity are reported. Next the authors deal with the air content in radon, thoron and their radioactive descendants, insisting on the variations of the radon air content and on the radioactive balance between radon and its descendants. Then a few notions concerning the natural radioactive aerosol are developed: electric charge state, granulometric distribution. The possible effects of natural atmospheric radioactivity on man are studied with a distinction between inner irradiation and outer irradiation, an average assessment is shown. Finally the important problem of radon in inhabitations is approached [fr

  15. Monitoring natural phytoplankton communities

    DEFF Research Database (Denmark)

    Haraguchi, L.; Jakobsen, H. H.; Lundholm, Nina

    2017-01-01

    -consuming and/or expensive, limiting sampling frequency. The use of faster methods, such as flow cytometry, has become more frequent in phytoplankton studies, although comparisons between this technique and traditional ones are still scarce. This study aimed to assess if natural phytoplankton communities...... carbon biomass with PFCM, applying the same conversion factors as for microscopy. Biomasses obtained with PFCM, estimated from live cells, were higher than microscopy for natural samples. We conclude that PFCM results are comparable to classical techniques, yet the data from PFCM had poor taxonomic...

  16. Training and natural immunity

    DEFF Research Database (Denmark)

    Pedersen, Bente Klarlund; Helge, Jørn Wulff; Richter, Erik

    2000-01-01

    these subjects were used to eliminate day-to-day variation in the immunological tests. Independently of diet, training increased the percentage of CD3-CD16+ CD56+ natural killer (NK) cells from [mean (SEM)] 14 (1) % to 20 (3) % (P = 0.05), whereas the NK-cell activity, either unstimulated or stimulated...... influence natural immunity, and suggest that ingestion of a fat-rich diet during training is detrimental to the immune system compared to the effect of a carbohydrate-rich diet....

  17. Natural Heavy Supersymmetry

    CERN Document Server

    Batell, Brian; McCullough, Matthew

    2015-01-01

    We study how, as a result of the scanning of supersymmetry breaking during the cosmological evolution, a relaxation mechanism can naturally determine a hierarchy between the weak scale and the masses of supersymmetric particles. Supersymmetry breaking is determined by QCD instanton effects, in an extremely minimal setup in which a single field drives the relaxation and breaks supersymmetry. Since gauginos are lighter than the other supersymmetric particles by a one-loop factor, the theory is a realisation of Split Supersymmetry free from the naturalness problem.

  18. The natural gas market

    International Nuclear Information System (INIS)

    Lagrasta, F.; Kaminski, V.; Prevatt, R.

    1999-01-01

    This chapter presents a brief history of the natural gas market highlighting the changes in the gas market and examining risk management in practice detailing the types of price risks, and the use of hedging using forwards and swaps. Options to manage risk are identified, and the role of risk management in financing, the role of the intermediary, and the market outlook are discussed. Panels describing the market structure, storage and natural gas risk management, the art of risk management, the winter 1995-96 basis blowout, spark spreads, the UK gas market and Europe, and weather derivatives are presented

  19. Natural Selection and Morality

    Directory of Open Access Journals (Sweden)

    Alejandro Rosas

    2006-12-01

    Full Text Available Resumen:En este ensayo abordo los intentos, relativamente recientes, de dar una explicación de la moralidad como adaptación por selección natural. Mi exposición tiene una introducción y cuatro partes: en la primera explico en qué consiste la paradoja del altruismo biológico. En la segunda expongo la solución que apela a la selección de grupos, recientemente resurgida; la solución que presuntamente aplicó Charles Darwin cuando formuló sus reflexiones biológicas sobre la moralidad humana. En la tercera expongo la solución sociobiológica, que opta por negar que la selección natural pueda explicar directamente la moralidad humana. La moralidad se presenta más bien como opuesta a la naturaleza diseñada por selección natural. En la cuarta parte desarrollo brevemente una explicación de la moralidad como adaptación que beneficia a los individuos. No opone la moralidad a la naturaleza, ni apela a la selección de grupos. Se sirve de un mecanismo de selección que opera a través de preferencias en la interacción social.Abstract:In this essay, I address recent attempts to account for morality as an adaptation due to natural selection. After a brief introduction, my exposition has four sections. I first explain the paradox of biological altruism. Second, I explain the solution to the paradox in terms of group selection. This solution was presumably applied by Darwin himself as he discussed human morality, and it has experienced a recent revival, though it remains suspicious to most biologists. In the third section I offer a socio-biological solution that opts for denying that morality can be explained by any form of natural selection. Morality is opposed to human nature as designed by natural selection. In the fourth, I argue for an explanation in terms of individual selection. It does not oppose morality to nature, and does not need the workings of group selection; rather, it operates through the agents’ psychological preferences

  20. MENOPAUSE AND NATURAL HEALING

    Directory of Open Access Journals (Sweden)

    Lucija Vrabič Dežman

    2008-12-01

    The studies could not decisively confirm the effectiveness of various phytoestrogens inamelioration of climacteric symptoms. Most studies have proven the effectiveness of thenatural medication made of Cimicifuga racemosa and its safe short-term use. Gynecologists should be familiar with the basics of phytotherapy and the results of clinical studiesin this field in order to confidently advise women to use the natural medications in caseswhere despite the climacteric symptoms they cannot or will not use HRT, consequentlygreatly reducing the quality of their lives. In cases where climacteric symptoms are mild tomoderate, some menopausal societies around the globe suggest trying natural medicationfirst, and only later implementing HRT

  1. Battles Fought in Nature

    DEFF Research Database (Denmark)

    Poulsen, Dorthe Varning; Stigsdottir, Ulrika S.

    2015-01-01

    Using horticultural activities and nature experiences to aid the recovery of returning soldiers has a long history. An increasing number of practical experiences and a few research studies confirm the fact that it may well be beneficial. A review by Varning Poulsen et al. (Under review) describes......, based on evidence and practical experience, to develop a transparent nature-based treatment program for war veterans suffering from PTSD. The treatment took place at the University of Copenhagen’s forest therapy garden. A qualitative research study documented and investigated the project. The lessons...

  2. Natural language modeling

    Energy Technology Data Exchange (ETDEWEB)

    Sharp, J.K. [Sandia National Labs., Albuquerque, NM (United States)

    1997-11-01

    This seminar describes a process and methodology that uses structured natural language to enable the construction of precise information requirements directly from users, experts, and managers. The main focus of this natural language approach is to create the precise information requirements and to do it in such a way that the business and technical experts are fully accountable for the results. These requirements can then be implemented using appropriate tools and technology. This requirement set is also a universal learning tool because it has all of the knowledge that is needed to understand a particular process (e.g., expense vouchers, project management, budget reviews, tax, laws, machine function).

  3. Nature of Human Rights

    Directory of Open Access Journals (Sweden)

    Carlos López Dawson

    2016-07-01

    Full Text Available In the formation of a new Constitution the constituents will require to know or reach an agreement on the nature of human rights; then, to determine how the State will enforce the respect to those rights. To do so, it is necessary to resort to the history and evolution of these rights, and the present work aims to contribute to an efficient productive debate about the nature of human rights, so that citizens can decide on the understanding that this is a thoughtful democratic and humanistic founded decision. The analysis is in the actual technical-ideological republican system which correspond to the current state of international law

  4. Natural gas for vehicles

    International Nuclear Information System (INIS)

    Tissot-Favre, V.; Sudour, D.; Binutti, M.; Zanetta, P.; Rieussec, J.L.

    2005-01-01

    As a true alternative to oil products, and environment friendly fuel, Natural Gas for Vehicles complies with requirements for sustainable development. In addition, it is part of the European Union policy which underlines the importance of energy diversification through alternative fuels. This workshop will look into the current offer to the public transport segment, waste collection vehicles, and commercial vehicle fleets. Actions taken to spread the use of natural gas to all types of cars will also be covered. This article gathers 5 presentations about this topic given at the gas conference

  5. Prioridades y desafíos en la cooperación ambiental entre Europa y América Latina: entre gobernanza global y sustentabilidad local

    Directory of Open Access Journals (Sweden)

    Imme Scholz

    2014-06-01

    Full Text Available La cooperación para el desarrollo está pasando por un proceso de redefinición de prioridades debido a los avances de la globalización económica, el cambio climático y los nuevos problemas de seguridad internacional. Este nuevo contexto no deja de influir las relaciones de cooperación entre Europa y América Latina.

  6. Enhance Nature Exploration with Technology

    Science.gov (United States)

    Holloway, Patricia; Mahan, Carol

    2012-01-01

    Kids and nature seem like a natural combination, but what was natural a generation ago is different today. Children are spending less time outdoors but continue to need nature for their physical, emotional, and mental development. This fact has led author Richard Louv to suggest that today's children are suffering from "nature-deficit disorder"…

  7. Mago contra falsario: un duelo de insultos entre Calvino y Servet

    Directory of Open Access Journals (Sweden)

    Tausiet, María

    2010-06-01

    Full Text Available The trial of the Spanish theologian and physician Miguel Servet, charged with heresy and blasphemy by the Council of Geneva in 1553, led to a long and abstruse debate between two apparently irreconcilable standpoints. In an attempt to clarify the terms of discussion on such crucial areas as the Trinity, divine immanence and the immortality of the soul, Calvin and Servet embarked on a three-day written debate (15-17 September 1553. In what ultimately became a genuine «duel to the death», what stands out, over and above the actual argumentation, is their use of insults as rhetorical weapons. Given that both adversaries were equally convinced that they were defending the «true faith», most of their attacks were aimed at demonstrating the false nature of their opponent. Thus, according to Servet, Calvin was nothing but an impostor (a latter-day «Simon Magus», while Calvin branded the Spaniard a slanderer and «falsifier».

    El proceso contra el teólogo y médico español Miguel Servet, acusado por el consistorio de Ginebra de hereje y blasfemo en 1553, dio lugar a un largo y abstruso debate teológico entre dos posturas aparentemente irreconciliables. Con la intención de clarificar los términos de la discusión acerca de temas tan cruciales como la Trinidad e inmanencia divinas, o la inmortalidad del alma, Calvino y Servet acordaron mantener una discusión por escrito en latín que duró tres días (15-17 septiembre de 1553. En el contexto de un enfrentamiento que acabó convirtiéndose en un auténtico «duelo a muerte», si algo destaca por encima de cualquier argumentación es la utilización del insulto como arma retórica. Teniendo en cuenta que ambos contendientes estaban convencidos de defender la «verdadera fe», la mayoría de las descalificaciones expresaban la idea de falsedad del contrario. De este modo, según Servet, Calvino no era sino un impostor (un nuevo «Simon Magus», mientras que éste tildó al español de

  8. Tecnología del gas natural

    Directory of Open Access Journals (Sweden)

    Leonardo Latorre Chacón

    1996-01-01

    Full Text Available Este artículo presenta conocimientos, entre la academia y la experiencia, propios de la ingeniería aplicada al manejo del gas natural, atendiendo la realidad del pais y el interés expresivo de los docentes y estudiantes de la Universidad Nacional por integrarlos en la actividad corriente de estudios, especializaciones, proyectos de grado, investigación de productos, ingeniería de procesos y control ambiental. Ilustra definiciones básicas y los usos del gas dentro del modelo de recuperación de productos licuables y la masificación para uso como combustible. Incluye una guia de algunos productos quimicos que derivan del gas natural, no obstante que el destino hacia materia prima petroquímica, aunque deseable, es secundario en las prioridades de la estrategia establecida de aprovechamiento de las reservas probadas de este valioso recurso de la economía nacional. Por otra parte, expone varias normas como algunos estándar ISO disponibles en el ICONTEC que tratan sobre especificaciones de calidad y ensayos de laboratorio referidas especialmente al transporte por gasoductos y distribución comercial pero aplicables a todas las etapas de la ingeniería de los proyectos. Finalmente recomienda bibliografía referente al gas natural cuya disponibilidad en bibliotecas y laboratorios motivarán la participación de las diversas carreras de la Facultad de Ingeniería en las actividades profesionales de esta industria.

  9. Cooperación; altruismo en las relaciones entre aerolíneas

    OpenAIRE

    Fernández Lerate, Elisa M.

    2016-01-01

    El presente estudio se centra en analizar unas determinadas relaciones cooperativas entre compañías aéreas, con la intención de investigar si sacan provecho o no de dichas relaciones. La cooperación entre esas compañías aéreas puede presentar comportamientos más altruistas o más oportunistas. Para centrar el tema del estudio, se van a analizar los acuerdos de códigos compartidos que llevan a cabo entre ellas. Los datos de cooperación a través de código compartido permitirán conocer qué porcen...

  10. Interactions entre muqueuse orale, salive et molécules de la flaveur

    OpenAIRE

    Ployon, Sarah

    2016-01-01

    Le rôle de la salive dans la perception sensorielle est de plus en plus reconnu, notamment par le biais des interactions physico-chimiques pouvant s’établir entre protéines salivaires et constituants alimentaires. Ce travail s’intéresse à la pellicule salivaire, la couche de protéines salivaires ancrées aux cellules épithéliales, et vise à caractériser les interactions pouvant s’établir d’une part entre ces protéines et épithélium oral, et d‘autre part entre ces protéines et les molécules de ...

  11. Entre a potência e o poder: Walter Benjamin e Roger Caillois

    Directory of Open Access Journals (Sweden)

    Susana Scramim

    2009-01-01

    Full Text Available http://dx.doi.org/10.5007/1984-784X.2009v9n14p101 A escrita fragmentária empenhada por Benjamim em "Seqüência em Ibiza" e os aforismos do Oráculo Manual y Arte de Prudencia de Gracián  indicam o esboço de uma reflexão sobre o poder na obra de Benjamin a qual se materializará como limiar entre a forma e o informe, entre a autonomia e auto-implicação, entre a obra e a des-obra. Essa reflexão se torna aguda  no impacto provocado em Benjamin pela a leitura  de L´ariditè que Roger Caillois publica juntamente com outros ensaios, em 1938, no Colégio de Sociologia em Paris.

  12. Patterns in natural systems

    NARCIS (Netherlands)

    Sewalt, L.

    2016-01-01

    In the thesis, `Patterns in natural systems’ the formation and evolution of patterns as solutions of several partial differential systems are studied. These mathematical systems model three different biological and ecological processes. First, the way that plankton concentrates in the water column,

  13. Natural history of COPD

    DEFF Research Database (Denmark)

    Vestbo, Jørgen; Lange, Peter

    2016-01-01

    The natural history of chronic obstructive pulmonary disease (COPD) is usually described with a focus on change in forced expiratory volume in 1 s (FEV1 ) over time as this allows for exploration of risk factors for an accelerated decline-and thus of developing COPD. From epidemiological studies we...

  14. THE NATURE OF COMPREHENSION.

    Science.gov (United States)

    CLELAND, DONALD L.

    THE NATURE OF COMPREHENSION IS DEFINED AND CLARIFIED. THE LITERATURE IS SURVEYED TO SHOW THAT THE DEVELOPMENT OF CONCEPTS IS IMPORTANT IN INTELLECTUAL ACTIVITIES. IT IS POINTED OUT THAT CONCEPTS ARE BUILT FROM PERCEPTS, IMAGES, SENSATION, AND MEMORIES, AND THAT THE STEPS WHICH ARE EMPLOYED AS CONCEPTS ARE BUILT AND REFINED AND INCLUDE PERCEIVING,…

  15. Cultivating human nature

    NARCIS (Netherlands)

    Derksen, Maarten

    2007-01-01

    Evolutionary psychology claims to offer a unified perspective on human nature and culture, which can serve to further the integration of psychology and the social sciences. I describe four approaches to evolutionary psychology, and note increasing attention to the agency of the individual in

  16. Reinventing Natural Selection

    Science.gov (United States)

    Geraedts, Caspar L.; Boersma, Kerst Th.

    2006-01-01

    Although many research studies report students' Lamarckian misconceptions, only a few studies present learning and teaching strategies that focus on the successful development of the concept of natural selection. The learning and teaching strategy for upper secondary students (aged 15-16) presented in this study conducted in The Netherlands is…

  17. Surfaces with Natural Ridges

    DEFF Research Database (Denmark)

    Brander, David; Markvorsen, Steen

    2015-01-01

    We discuss surfaces with singularities, both in mathematics and in the real world. For many types of mathematical surface, singularities are natural and can be regarded as part of the surface. The most emblematic example is that of surfaces of constant negative Gauss curvature, all of which...

  18. Natural attenuation of herbicides

    DEFF Research Database (Denmark)

    Tuxen, Nina; Højberg, Anker Lajer; Broholm, Mette Martina

    2002-01-01

    A field injection experiment in a sandy, aerobic aquifer showed that two phenoxy acids MCPP (mecoprop) and dichlorprop were degraded within I in downgradient of the injection wells after an apparent lag period. The plume development and microbial measurements indicated that microbial growth gover....... The observations may be important for application of natural attenuation as a remedy in field scale systems....

  19. Wasserpflanzen in der Natur

    DEFF Research Database (Denmark)

    Pedersen, Ole; Christensen, Claus

    2011-01-01

    Unsere Aquarienpflanzen kommen in der Natur vor oder sind Zuchtformen natürlicher Arten. Dennoch konnten erst sehr wenige Aquarianer diese Pflanzen in ihrer natürlichen Umgebung beobachten. Oft stellten sie fest, dass die Pflanzen meist ganz anders aussehen als im Aquarium. Neben einem ständigen...

  20. Patagonia: nature and territories

    Directory of Open Access Journals (Sweden)

    Alejandro Fabián Schweitzer

    2014-12-01

    This paper analyzes the place occupied by Patagonia in today’s fin de siècle scenario of commodities, hegemony crisis and multi-polar world emergence concurring with the convergence of consumerist guidelines, all of which would apparently lead to an in-depth socio-ecological crisis as well as to an accelerated dispute over nature and territory sense.

  1. Nature teaching structures

    DEFF Research Database (Denmark)

    Wester, Ture

    2002-01-01

    -living nature a number of striking statical and kinematical peculiarities have been observed. The paper will try to isolate and describe some of these observations and their relation to our engineered structures based on human thinking. The paper will deal with basic aspects as geometry, topology, redundancy...

  2. Demystifying Nature of Science

    Science.gov (United States)

    Lederman, Judith; Bartels, Selina; Lederman, Norman; Gnanakkan, Dionysius

    2014-01-01

    With the emergence of the "Next Generation Science Standards" ("NGSS"; NGSS Lead States 2013), it is apparent that teaching and learning about nature of science (NOS) continues to be an important goal of science education for all K-12 students. With this emphasis on NOS, early childhood teachers are asking how to design…

  3. Radioactivity: A Natural Phenomenon.

    Science.gov (United States)

    Ronneau, C.

    1990-01-01

    Discussed is misinformation people have on the subject of radiation. The importance of comparing artificial source levels of radiation to natural levels is emphasized. Measurements of radioactivity, its consequences, and comparisons between the risks induced by radiation in the environment and from artificial sources are included. (KR)

  4. Natural gas industry regulations

    International Nuclear Information System (INIS)

    Clo, A.

    1999-01-01

    In the reception of the EU Directive on the internal gas market, it is quite necessary to avoid the mistakes already made in the case of electricity. A possible cause is there suggested which may help rearrange the natural gas industry and market in Italy. It's four points are: general interests, national peculiarities, public policies, regulatory framework [it

  5. How Is Nature Asymmetric?

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 7; Issue 6. How Is Nature Asymmetric? - Discrete Symmetries in Particle Physics and their Violation ... Indian Institute of Technology, Chennai. Aligarh Muslim University. University of Rajasthan, Jaipur. Indian Institute of Science, Bangalore 560012, India.

  6. Natural radiation environment III

    International Nuclear Information System (INIS)

    Gesell, T.F.; Lowder, W.M.

    1980-01-01

    Separate abstracts were prepared for the 52 research papers presented at this symposium in April 1978. The major topics in this volume deal with penetrating radiation measurements, radiation surveys and population exposure, radioactivity in the indoor environment, and technologically enhanced natural radioactivity

  7. Natural radiation environment III

    International Nuclear Information System (INIS)

    Gesell, T.F.; Lowder, W.M.

    1980-01-01

    Separate abstracts were prepared for the 57 research papers presented at this symposium in April 1978 at Houston, Texas. This symposium provided a common forum for scientists in several disciplines that deal with natural radiation because there is an increasing interest in the environment as it pertains to human health and the competition for scarce energy and material resources

  8. SUIKERBOSRAND NATURE RESERVE

    African Journals Online (AJOL)

    reserve, the total length being 66 km with six overnight huts. There are also the BokmakiePie. Nature Troil. and the Cheetah Interpretive Troil. which can be used by day visitors. The former has two loops, one of 10 km and another of 17 km. The. Cheetah Troil. is much shorter and various points of interest are interpreted en ...

  9. Rehabilitating Afghanistan's natural resources

    Science.gov (United States)

    George Hernandez

    2011-01-01

    The Soviet Union invaded Afghanistan in late 1979. During the next 23 years, the war between the Mujahideen Resistance and the Soviet forces, the ensuing civil war, and eventual take over by the Taliban caused enormous harm to the natural resources of Afghanistan. In 2003, the USDA Forest Service (USFS) was asked by the USDA Foreign Agricultural Service to provide...

  10. Sciences & Nature: Site Map

    African Journals Online (AJOL)

    Journal Home · Journals · Sciences & Nature · About · Log In · Register · Advanced Search · By Author · By Title. Issues. Current Issue · Archives · Open Journal Systems · Help. ISSN: 1812-0741. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  11. Nature remedies human damage

    International Nuclear Information System (INIS)

    Heikkonen, H.

    1994-01-01

    Ecolution Ltd puts its emphasis on technologies which use nature's own methods. This technology is best suited to the bioremediation of old industrial sites, saw mills or oil- contaminated areas. The results of biopurification are consistently good and, in comparison with burning, the costs are low

  12. Shooting mechanisms in nature

    NARCIS (Netherlands)

    Sakes, Aimée; Wiel, van der Marleen; Henselmans, Paul W.J.; Leeuwen, van Johan L.; Dodou, Dimitra; Breedveld, Paul

    2016-01-01

    Background In nature, shooting mechanisms are used for a variety of purposes, including prey capture, defense, and reproduction. This review offers insight into the working principles of shooting mechanisms in fungi, plants, and animals in the light of the specific functional demands that these

  13. Venezuela natural gas outlook

    International Nuclear Information System (INIS)

    Silva, P.

    1991-01-01

    This paper reports on the natural gas outlook for Venezuela. First of all, it is very important to remember that in the last few years we have had frequent and unforeseen changes in the energy, ecological, geopolitical and economical fields which explain why all the projections of demand and prices for hydrocarbons and their products have failed to predict what later would happen in the market. Natural gas, with its recognized advantages over other traditional competitors such as oil, coal and nuclear energy, is identified as the component that is acquiring more weight in the energy equation, with a strengthening projection, not only as a resource that covers demand but as a key element in the international energy business. In fact, natural gas satisfies 21% of overall worldwide energy consumption, with an annual increase of 2.7% over the last few years, which is higher than the global energy growth of other fossil fuels. This tendency, which dates from the beginning of the 1980's, will continue with a possibility of increasing over the coming years. Under a foreseeable scenario, it is estimated that worldwide use of natural gas will increase 40% over the next 10 years and 75% on a longer term. Specifically for liquid methane (LNG), use should increase 60% during this last decade. The LPG increase should be moderate due to the limited demand until 1995 and to the stable trends that will continue its use until the end of this century

  14. Knowledge and Natural Resources

    DEFF Research Database (Denmark)

    Bertelsen, Rasmus Gjedssø; Justinussen, Jens Christian Svabo

    2016-01-01

    Arctic economies are generally natural resource based economies, whether they are indigenous economies largely dependent on living on the land or industrialized economies depending on marine resources, mineral resources or fossil or renewable energy resources. However, the central role of knowledge...

  15. Natural gas annual 1992

    International Nuclear Information System (INIS)

    1993-01-01

    This document provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. This report, Volume 2, presents historical data for the Nation from 1930 to 1992, and by State from 1967 to 1992. The Supplement of this report presents profiles of selected companies

  16. Nature in the City.

    Science.gov (United States)

    Melber, Leah W.

    2000-01-01

    Presents three science activities targeted to help urban students learn about nature: (1) observing coloration patterns of pigeons; (2) measuring local rainfall and comparing it to other areas; and (3) conducting a biodiversity study by observing a patch of lawn. (YDS)

  17. A new nature

    DEFF Research Database (Denmark)

    Abraham, Anders

    ”A New Nature - 9 ARCHITECTURAL CONDITIONS BETWEEN LIQUID AND SOLID” opbygger en tankegang om arkitektur som tilstande i modsætning til arkitektur som form og type.  Ved at se på verden som tilstande og organiseringer mellem ”flydende” og ”fast”, homogent og heterogent m.v., er det muligt...

  18. Nature Identical Prosody

    DEFF Research Database (Denmark)

    Juel Henrichsen, Peter

    2012-01-01

    ; such as low naturalness (DiSyn) and dependence on huge amounts of background data (UnitSyn). We present a hybrid model based on high-level speech data. As preliminary tests show, prosodic models combining DiSyn style at the phone level with UnitSyn style at the supra-segmental levels may approach Unit...

  19. Nature as Inspiration

    Science.gov (United States)

    Tank, Kristina; Moore, Tamara; Strnat, Meg

    2015-01-01

    This article describes the final lesson within a seven-day STEM and literacy unit that is part of the Picture STEM curriculum (pictureSTEM. org) and uses engineering to integrate science and mathematics learning in a meaningful way (Tank and Moore 2013). For this engineering challenge, students used nature as a source of inspiration for designs to…

  20. Nature, Education and Things

    Science.gov (United States)

    Rømer, Thomas Aastrup

    2013-01-01

    In this essay it is argued that the educational philosophy of John Dewey gains in depth and importance by being related to his philosophy of nature, his metaphysics. The result is that any experiental process is situated inside an event, an existence, a thing, and I try to interpret this "thing" as schools or major cultural events such…

  1. Logic and Natural selection

    Czech Academy of Sciences Publication Activity Database

    Peregrin, Jaroslav

    2010-01-01

    Roč. 4, č. 2 (2010), s. 207-223 ISSN 1661-8297 R&D Projects: GA ČR(CZ) GAP401/10/1279 Institutional research plan: CEZ:AV0Z9009908 Keywords : logic * natural selection * modus potens * inferentialism Subject RIV: AA - Philosophy ; Religion

  2. New force in nature?

    International Nuclear Information System (INIS)

    Fischbach, E.; Sudarsky, D.; Szafer, A.; Talmadge, C.; Aronson, S.H.

    1986-01-01

    We review recent experimental and theoretical work dealing with the proposed fifth force. Further analysis of the original Eoetvoes experiments has uncovered no challenges to our original assertion that these data evidence a correlation characteristic of the presence of a new coupling to baryon number or hypercharge. Various models suggest that the proposed fifth force could be accomodated naturally into the existing theoretical framework

  3. Natural hazards science strategy

    Science.gov (United States)

    Holmes, Robert R.; Jones, Lucile M.; Eidenshink, Jeffery C.; Godt, Jonathan W.; Kirby, Stephen H.; Love, Jeffrey J.; Neal, Christina A.; Plant, Nathaniel G.; Plunkett, Michael L.; Weaver, Craig S.; Wein, Anne; Perry, Suzanne C.

    2012-01-01

    The mission of the U.S. Geological Survey (USGS) in natural hazards is to develop and apply hazard science to help protect the safety, security, and economic well-being of the Nation. The costs and consequences of natural hazards can be enormous, and each year more people and infrastructure are at risk. USGS scientific research—founded on detailed observations and improved understanding of the responsible physical processes—can help to understand and reduce natural hazard risks and to make and effectively communicate reliable statements about hazard characteristics, such as frequency, magnitude, extent, onset, consequences, and where possible, the time of future events.To accomplish its broad hazard mission, the USGS maintains an expert workforce of scientists and technicians in the earth sciences, hydrology, biology, geography, social and behavioral sciences, and other fields, and engages cooperatively with numerous agencies, research institutions, and organizations in the public and private sectors, across the Nation and around the world. The scientific expertise required to accomplish the USGS mission in natural hazards includes a wide range of disciplines that this report refers to, in aggregate, as hazard science.In October 2010, the Natural Hazards Science Strategy Planning Team (H–SSPT) was charged with developing a long-term (10-year) Science Strategy for the USGS mission in natural hazards. This report fulfills that charge, with a document hereinafter referred to as the Strategy, to provide scientific observations, analyses, and research that are critical for the Nation to become more resilient to natural hazards. Science provides the information that decisionmakers need to determine whether risk management activities are worthwhile. Moreover, as the agency with the perspective of geologic time, the USGS is uniquely positioned to extend the collective experience of society to prepare for events outside current memory. The USGS has critical statutory

  4. Natural products as photoprotection.

    Science.gov (United States)

    Saewan, Nisakorn; Jimtaisong, Ampa

    2015-03-01

    The rise in solar ultraviolet radiation on the earth's surface has led to a depletion of stratospheric ozone over recent decades, thus accelerating the need to protect human skin against the harmful effects of UV radiation such as erythema, edema, hyperpigmentation, photoaging, and skin cancer. There are many different ways to protect skin against UV radiation's harmful effects. The most popular way to reduce the amount of UV radiation penetrating the skin is topical application of sunscreen products that contain UV absorbing or reflecting active molecules. Based on their protection mechanism, the active molecules in sunscreens are broadly divided into inorganic and organic agents. Inorganic sunscreens reflect and scatter UV and visible radiation, while organic sunscreens absorb UV radiation and then re-emit energy as heat or light. These synthetic molecules have limited concentration according to regulation concern. Several natural compounds with UV absorption property have been used to substitute for or to reduce the quantity of synthetic sunscreen agents. In addition to UV absorption property, most natural compounds were found to act as antioxidants, anti-inflammatory, and immunomodulatory agents, which provide further protection against the damaging effects of UV radiation exposure. Compounds derived from natural sources have gained considerable attention for use in sunscreen products and have bolstered the market trend toward natural cosmetics. This adds to the importance of there being a wide selection of active molecules in sunscreen formulations. This paper summarizes a number of natural products derived from propolis, plants, algae, and lichens that have shown potential photoprotection properties against UV radiation exposure-induced skin damage. © 2015 Wiley Periodicals, Inc.

  5. Comparación de caracteres corporales y del veneno de Bothrops alternatus entre poblaciones de las provincias de Buenos Aires y Entre Ríos, Argentina

    Directory of Open Access Journals (Sweden)

    Rocco, Daniela Marisa

    2011-11-01

    Full Text Available Comparamos caracteres corporales y producción de veneno de ejemplares de Bothrops alternatus de una población aislada geográficamente (Olavarría, región de Tandilia, Buenos Aires con otra en su área de distribución continua de Concordia (Entre Ríos. Estudiamos el largo corporal, peso, separación entre dientes inoculadores, cantidad de veneno y de proteínas en el veneno por ejemplar. No se hallaron diferencias en los caracteres estudiados entre ambas poblaciones (p > 0.05. Las hembras fueron mayores que los machos en ambas muestras, entre un 12-18% (p 0.5; Olavarría: 142 ± 65 mg/animal, Concordia: 160 ± 80 mg/animal, aún ajustando la cantidad de veneno producida respecto al tamaño, mediante el cociente veneno/largo corporal (p >0.6. Tampoco hubo diferencias en el contenido proteico, siendo para ambas muestras de 0.697 ± 0.096 mg de proteínas/mg de veneno seco. Nuestros datos sugieren que los ejemplares de la población aislada de Tandilia no presentan variaciones en el tamaño corporal o en la cantidad de veneno producida, respecto a los ejemplares de Concordia. Some corporal characters and venom yield of adult specimens of Bothrops alternatus from the isolated region of Olavarría (Tandilian Region, Buenos Aires and the region of continuous distribution of Concordia (Entre Ríos were compared. Corporal length, weight, separation between fangs, venom yield by snake and the amount of protein in the venom were determined. No differences in the distinct characters from specimens from both regions were found (p > 0.05. Females were greater than males in both samples, 12-18% (p 0.5; Olavarría= 142 ± 65 mg / animal, Concordia= 161 ± 80 mg / animal even adjusting the venom yield with the corporal length by the relation mg of venom / corporal length (p > 0.6. No differences were observed in the protein content of the dry venom which was of 0.697 ± 0.096 mg of protein / mg of dry venom. From the study of these samples, it could be

  6. Quantitative comparison of different-shaped wavefront sensors and preliminary results for defocus aberrations on a mechanical eye Comparações quantitativas entre o sensor Hartmann-Shack e o sensor de Castro e resultados preliminares para um olho mecânico

    Directory of Open Access Journals (Sweden)

    Luis Alberto Carvalho

    2006-04-01

    : mean of root mean square (RMSE for all aberrations, when theoretical Zernike coefficients were used as control, was 0.22, 0.66 and 0.26 microns; RMSE of sphere-cylinder values when compared to autorefractor measurements was 0.18D, 0.22D and 0.35D for sphere, 0.14D, 0.24D and 0.17D for cylinder, 34.36°, 35.16° and 26.36° for axis; RMSE of sphere-cylinder values when theoretical values were used as control was 0.11D, 0.29D and 0.46D for sphere, 0.15D, 0.28D and 0.17D for cylinder, 19.71°, 25.56° and 18.56° for axis. CONCLUSION: The main conclusion is that the symmetry of an optical sensor is not an important consideration when measuring typical eye aberrations such as defocus (myopic and hyperopic, but there are differences. In this sense, the polar symmetry sensors render results that are equivalent to the traditional Cartesian Hartmann-Shack sensor, but furnish an easier method for determining the optical center.OBJETIVO: Sensores de aberrações ópticas de simetria cartesiana são aceitos pela maioria da comunidade científica como um padrão (como o sensor de Hartmann-Shack (HS nos ramos da óptica e da oftalmologia. Neste trabalho foram desenvolvidos e testados três tipos de sensores com simetrias e/ou configurações diferentes e foram feitas comparações entre o sensor de Castro (SC e o sensor HS na sua forma cilíndrica e cartesiana. MÉTODOS: Todos os sensores foram projetados e desenvolvidos em nosso laboratório no Instituto de Física de São Carlos - USP. O primeiro sensor é um sensor HS convencional, ou seja, no formato cartesiano; o segundo é um sensor HS cilíndrico e o terceiro é o SC. Para cada sensor foram realizados tanto cálculos teóricos como medidas práticas em um olho mecânico. O olho mecânico foi ajustado com 10 diferentes tipos de aberrações de desfocalização, de -5D a +5D, em passos de 1D. RESULTADOS: A precisão dos sensores foi analisada utilizando-se dois diferentes métodos: primeiramente um método totalmente te

  7. Immigration, social cohesion, and naturalization

    DEFF Research Database (Denmark)

    Lægaard, Sune

    2010-01-01

    social trust do not connect with issues of naturalization at all. Other conceptions of social cohesion are either politically controversial, problematic as part of the justification of stricter naturalization requirements, or in fact justify less demanding naturalization requirements....

  8. Renegociação do Tratado de Itaípu entre Lugo e Lula

    OpenAIRE

    Almeida, Giordano Sousa de

    2015-01-01

    Este trabalho objetiva analisar o processo de ratificação do ajuste no Anexo C do Tratado de Itaipu, ocorrido, no Congresso Nacional brasileiro, em decorrência do acordo assinando entre o presidente brasileiro Luiz Inácio Lula da Silva e seu homólogo paraguaio Fernando Armindo Lugo de Méndez, em julho de 2009. Especificamente, procurou-se entender se haveria alguma relação especial existente entre os Governos brasileiro, chefiado pelo Partido dos Trabalhadores, e o paraguaio, chefiado por ...

  9. Relación entre habilidades de lectura de palabras y comprensión lectora

    OpenAIRE

    Vieiro, Pilar; Amboage, Isabel

    2016-01-01

    La lectura es un aprendizaje instrumental que debe ser enseñado con un método específico. En este sentido es importante conocer la interrelación entre los distintos subprocesos implicados. En este contexto el objetivo general de este estudio es analizar si existe una asociación o disociación entre las habilidades de lectura de palabras y los procesos de comprensión en alumnos de 2º ciclo de Educación Primaria y a partir de aquí analizar las implicaciones educativas de los resultad...

  10. Diferenças entre marcas nos serviços multiple-play em Portugal

    OpenAIRE

    Silva, Pedro; Moreira, António; Moutinho, Victor

    2014-01-01

    A concorrência entre operadores do mercado das telecomunicações em Portugal tem sido intensa.Os serviços multiple-play têm vindo a conquistar a preferência dos portugueses e a oferta tem vindo a aumentar ao longo dos anos. Face ao aumento da competitividade dos principais concorrentes, seria de esperar que os desempenhos das suas marcas fossem muito equilibrados. O objetivo deste artigo é o de analisar as diferenças entre as três principais marcas multiple-play em Portugal. Para tal, foi efet...

  11. La problematica de la demarcacion entre ciencia y pseudociencia y sus implicaciones en la educacion cientifica

    Science.gov (United States)

    Jimenez Tolentino, Dinorah

    2011-12-01

    En la sociedad prevalece una tendencia generalizada hacia la inclusion de creencias y practicas pseudocientificas. Esta investigacion responde a la necesidad de analizar como la proliferacion de las pseudociencias afecta la vision que tienen los estudiantes universitarios sobre las ciencias naturales. A tales efectos, la investigadora describe las concepciones epistemologicas que tienen los estudiantes sobre las ciencias y las pseudociencias e identifica los criterios de demarcacion, entre un area y otra, que se derivan de estas concepciones. De igual modo, esta identifica las creencias y practicas pseudocientificas de mayor arraigo entre los estudiantes, destacando, a su vez, la razon de ser de las mismas. Por ultimo, la investigadora analiza las implicaciones educativas de la problematica de la demarcacion entre ciencia y pseudociencia. La investigacion es de naturaleza mixta, enmarcada en los paradigmas empirico- analitico y cualitativo. El proceso investigativo se llevo a cabo mediante la administracion del cuestionario Criterios para la demarcacion entre ciencia y pseudociencia. La parte cualitativa estuvo enmarcada en el diseno de estudio de caso, recopilando informacion mediante entrevistas semiestructuradas en dos grupos focales. La poblacion de estudio estuvo constituida por estudiantes universitarios del nivel subgraduado de la Universidad Central de Bayamon. Los resultados del estudio reflejaron las concepciones erroneas de los estudiantes sobre la naturaleza de las ciencias y las pseudociencias. Con respecto a la demarcacion entre ciencia y pseudociencia, el criterio imperante entre los universitarios es el de la verificabilidad, considerando la aplicacion del metodo cientifico como el metodo para demostrar la veracidad de las teorias cientificas. Las creencias y practicas pseudocientificas no son muy frecuentes entre los universitarios. Estos atribuyen las mismas a la prevalencia de elementos supersticiosos y al engano a que es sometida la poblacion

  12. Uma Proposta de Sistema para Tradução entre Linguagens de Sinais

    OpenAIRE

    NEIVA, Davi Hirafuji

    2015-01-01

    Na sociedade contemporânea existe uma forte campanha pela acessibilidade e pela inclusão de pessoas com deficiências. No Brasil há em torno de 9 milhões de surdos que usam a Linguagem Brasileira de Sinais (LIBRAS) e enfrentam diversas barreiras de comunicação. Várias iniciativas de aplicativos móveis proveem tradução entre LIBRAS e Português, porém a comunicação entre surdos de diferentes nacionalidades permanece um desafio. Este trabalho tem como objetivo propor um sistema que permita a pess...

  13. RELACIÓN ENTRE DIFERENTES PRUEBAS DE CAMPO: FUERZA, POTENCIA Y VELOCIDAD

    OpenAIRE

    Jessenia Hernández Elizondo

    2003-01-01

    Esta investigación tuvo como propósito principal el encontrar por medio de pruebas en las variables de fuerza, potencia y velocidad, la relación matemática existente entre estos tres constructos. Participaron 56 sujetos varones con edades entre 18 y 25 años. Con el fin de responder al objetivo del estudio, se les aplicaron pruebas de campo de fuerza (1RM de sentadilla completa y repeticiones máximas al 80% 60% 40% y 20%), de velocidad (30 metros lanzados y 30 metros sin impulso), y de potenci...

  14. La cooperación internacional entre los organismos electorales de América Latina

    Directory of Open Access Journals (Sweden)

    Luis Antonio Sobrado González

    2017-07-01

    Full Text Available Ensayo sobre la relación de cooperación internacional entre los órganos electorales de los países latinoamericanos y los órganos de cooperación internacionales y regionales que contribuyen a esta cooperación horizontal. El artículo inicia con una reseña breve de los antecedentes de los procesos electorales, desarrolla seguidamente las características generales de la cooperación internacional y los órganos de cooperación que coadyuvan a estas relaciones entre los organismos electorales de la región

  15. Um mapeamento das aproximações entre Weber e Nietzsche

    Directory of Open Access Journals (Sweden)

    Leandro dos Santos

    2014-06-01

    Full Text Available Este artigo tem por objetivo um levantamento dos principais tópicos de aproximação entre a Sociologia de Max Weber (1864-1920 e a Filosofia de Friedrich W. Nietzsche (1844-1900. Para tanto, sublinharam-se os pontos mais expressivos e correntemente observados na literatura acerca das aproximações entre Weber e Nietzsche. Nesse sentido, os traços de maior afinidade foram encontrados nos seguintes temas: poder, conhecimento, modernidade e ética.

  16. Projecte d'integració entre SAP GH - SAP MM - Kàrdex

    OpenAIRE

    Perea Núñez, Yolanda

    2012-01-01

    Projecte d'integració entre dos sistemes SAP (gestió hospitalària i gestió de materials) amb un altre sistema aliè a SAP, el sistema de magatzem de medicaments Kàrdex, mitjançant comunicacions via SAP Process Integration. Proyecto de integración entre dos sistemas SAP (gestión hospitalaria y gestión de materiales) con otro sistema ajeno a SAP, el sistema de almacén de medicamentos Kardex, mediante comunicaciones vía SAP Process Integration.

  17. Interação entre vitamina A e ferro em diferentes grupos populacionais

    OpenAIRE

    Netto,Michele Pereira; Priore,Silvia Eloiza; Franceschini,Sylvia do Carmo Castro

    2007-01-01

    A interação entre ferro e vitamina A tem sido alvo de pesquisas científicas, visto que existem questões ainda pouco esclarecidas. Através de um levantamento bibliográfico, mediante consulta à base de dados Medline da National Library of Medicine, Estados Unidos da America, foram selecionadas publicações que tratavam sobre a interação entre ferro e vitamina A em seres humanos, a partir da década de 80 até o ano de 2003. As palavras chave utilizadas no levantamento bibliográfico foram "ferro", ...

  18. Cruzamiento interespecífico entre Aedes aegypti y Aedes albopictus en el laboratorio

    OpenAIRE

    Martínez López, Yanisley; Martinez Pérez, Yanet; Acosta Rodríguez, Miriam; Fuentes González, Omar

    2014-01-01

    Introducción: existen algunos estudios realizados para verificar el posible apareamiento interespecífico, pero solo algunos trabajos han obtenido resultados positivos en este fenómeno. Objetivo: probar la posibilidad de obtener huevos viables del cruce entre Aedes aegypti y Aedes albopictus. Métodos: experimentos de apareamiento recíproco entre Aedes aegypti procedentes del insectario del Departamento de Control de Vectores del Instituto de Medicina Tropical "Pedro Kourí" y una población de A...

  19. Sonolência e consumo de carboidratos entre motoristas de caminhão

    OpenAIRE

    Andressa Juliane Martins

    2013-01-01

    Introdução - Há evidências de que o aumento do consumo de carboidratos esteja associado à sonolência. Quando realizado à noite, o consumo de carboidratos parece ser um fator que afeta o desempenho no trabalho. Paradoxalmente, o trabalho noturno levaria ao aumento da ingestão de alimentos ricos em carboidratos como consequência da privação de sono. Objetivo - Verificar a existência de correlação entre a sonolência e consumo de carboidratos entre motoristas de caminhão. Métodos - Participaram d...

  20. El “consentimiento” negociado entre dos comunidades mineras mexicanas y las trasnacionales Goldcorp y Ternium

    OpenAIRE

    Blanca Ruth Santos Cordero; Eleocadio Martínez Silva

    2015-01-01

    En este artículo se busca reconstruir la dinámica de la relación entre empresas trasnacionales y comunidades rurales mexicanas, a partir de dos estudios de caso: la minera canadiense Goldcorp, en Mazapil, Zacatecas, y la italo-argentina Ternium, en San Miguel Arcángel, en Aquila, Michoacán. La hipótesis sostiene que la racionalidad de la máxima ganancia y el cálculo del riesgo están presentes en las negociaciones entabladas entre las comunidades campesinas y las corporaciones. Y, si bien e...

  1. Art. XXIV del gatt-omc: la relación entre regionalismo y multilateralismo

    OpenAIRE

    Germán A. de la Reza

    2015-01-01

    En el presente trabajo estudiamos la interacción entre el regionalismo y el multilateralismo a través del Art. XXIV del gatt-omc y en un plano más general el grado de conexión que existe entre las dinámicas regionales y las fuerzas globales tomando en consideración los factores organizacionales. Los resultados de la investigación sugieren que el multilateralismo y el regionalismo responden a intereses sistémicos relativamente autónomos, donde uno representa una alternativa secundaria a los be...

  2. Entre memoria y olvido. El tiempo de la costumbre en un conflicto medieval

    OpenAIRE

    Paola Miceli

    2009-01-01

    IntroducciónEste trabajo se enmarca en un proyecto más general que tiene por objetivo investigar la relación entre práctica judicial y las elaboraciones doctas del derecho consuetudinario en León y Castilla durante la Edad Media. La cuestión del derecho consuetudinario es un problema en el que vengo trabajando desde hace algunos años con el objetivo de cuestionar una tesis clásica entre los historiadores del derecho que consideran a la costumbre como derecho de matriz popular ligado a las prá...

  3. A floresta geométrica de Paul Claudel: fronteira entre dois mundos.

    Directory of Open Access Journals (Sweden)

    Vera Beatriz Siqueira

    Full Text Available resumo O artigo parte da análise do balé O homem e seu desejo, criado por Paul Claudel (poema plástico, Darius Milhaud (música e Audrey Parr (cenografia e figurino quando estavam no Rio de Janeiro entre 1917 e 1918. A ideia básica é pensar essa obra como parte integrante dos diálogos interculturais que fundam a modernidade global do início do século XX, investigando o papel desempenhado pela cultura e pela natureza brasileira no projeto de Claudel de articulação entre vanguarda, classicismo e primitivismo.

  4. ASOCIACIÓN ENTRE VALORES DE TRABAJO, INTERESES PROFESIONALES Y RASGOS DE PERSONALIDAD

    OpenAIRE

    Pinto, Lariana Paula; Noronha, Ana Paula Porto; Rueda, Fabián Javier Marín

    2017-01-01

    Resumen Este estudio tuvo como objetivo investigar la asociación entre intereses profesionales y valores de trabajo, y entre valores de trabajo y rasgos de personalidad. Participaron 281 universitarios, con edad media de 23.97 años, de los cursos de Administración, Psicología, Filosofía y Teología, del Estado de San Pablo, Brasil. Fueron aplicados tres instrumentos (Escala de Evaluación de los Valores de Trabajo, Cuestionario de Búsqueda Auto-Dirigida y Batería Factorial de Personalidad). Los...

  5. Relaciones entre el sueño y la adicción

    OpenAIRE

    Cañellas, Francesca; de Lecea, Luis

    2012-01-01

    La interacción entre los trastornos del sueño y el abuso de sustancias es ya conocida, pero seguramente más compleja de lo que se pensaba. Existe tanto una relación positiva entre tener un trastorno por uso de substancias y sufrir un trastorno de sueño, como viceversa. Los efectos sobre el sueño dependen de la substancia utilizada, pero se ha demostrado que tanto durante su uso como en período de abstinencia los consumidores tienen diferentes problemas de sueño y fundamentalmente un sueño más...

  6. VIOLENCIA HACIA LOS VARONES ENTRE PAREJAS JÓVENES UNIVERSITARIAS DE TIJUANA, MÉXICO

    OpenAIRE

    Teresa Fernández de Juan; Federico Antonio Martínez Aguilar; Cristian Raquel Unzueta Miranda; Érika Rojas Mariscal

    2016-01-01

    El fin de este trabajo fue analizar los alcances actuales de la violencia de pareja entre los jóvenes, incluido el maltrato hacia los varones. Se revisa específicamente el problema en el estado de Baja California (México) a través de la aplicación de una prueba, creada y validada al efecto, a una muestra de 366 jóvenes (123 hombres y 243 mujeres), estudiantes de licenciatura pertenecientes a diversas universidades privadas de la ciudad de Tijuana. Entre los resultados obtenidos desta...

  7. Neoinstitucionalismo: ¿es posible un diálogo entre historiadores, juristas y economistas?

    Directory of Open Access Journals (Sweden)

    Jaime Eduardo Londoño Motta

    2002-12-01

    Full Text Available En vista de una deseable y necesaria comunicación activa entre historiadores, economistas y juristas, para estudiar la crisis de la sociedad colombiana, vale la penas tener en cuenta el neoinstitucionalismo de Douglas North entendiéndolo desde una perspectiva pluridisciplinar. Se discuten las posibilidades analíticas que ofrece tal apropiación del modelo, se analiza la situación de la historiografía, la economía y el derecho en Colombia y se conjeturan las probabilidades institucionales de un diálogo entre esas disciplinas.

  8. La afinidad electiva entre consumo cultural y percepción sociocultural: el caso de Chile

    OpenAIRE

    Tomás Peters Núñez

    2010-01-01

    El presente artículo demuestra la afinidad electiva entre consumo cultural y percepción sociocultural. A partir de los datos de la Encuesta de participación y consumo cultural 2009, de Chile, se muestra evidencia estadística de que el consumo cultural mantiene una afinidad electiva con las valoraciones democráticas, políticas, sociales y ciudadanas de los consumidores. Esta tendencia también es observable entre las personas que pertenecen a segmentos de la población con bajos ingresos económi...

  9. Las relaciones entre España y Japón

    OpenAIRE

    Jensana, Amadeo

    2013-01-01

    Si bien España y Japón son dos países separados por más de 10.000 kilómetros existe una importante afinidad cultural entre ambos pueblos. Los japoneses admiran muchas de las manifestaciones culturales españolas, entre las que destacan la arquitectura (especialmente el Modernismo catalán), el flamenco, la gastronomía o el deporte (hay numerosos seguidores de la Liga Profesional de Fútbol). Por su parte, los españoles son plenamente conscientes del nivel tecnológico de las grandes corporacio...

  10. Realidad de maltrato en las relaciones afectivas entre jóvenes mexicanos durante el noviazgo

    OpenAIRE

    Cortés Ayala, Lourdes

    2016-01-01

    El objetivo de esta Tesis Doctoral fue estudiar la prevalencia de violencia en el noviazgo en jovenes mexicanos a traves de cuatro estudios. El objetivo del primer estudio ex post facto fue establecer la autopercepción de maltrato, así como los sentimientos de miedo y atrapado que existen entre los miembros de una relación de pareja, y determinar si hay diferencias en la prevalencia de los diferentes tipos de violencia o victimización entre los que se perciben maltratados y los que no, tenien...

  11. Relación entre el período de lactancia materna y maloclusiones

    OpenAIRE

    Rosa Gabriela Rondón; Gabriel Alejandro Zambrano; María Elena Guerra

    2012-01-01

    Los beneficios de la lactancia materna en la prevención de las maloclusiones han sido descritos en la literatura odontológica, destacando que lactar exclusivamente más de 6 meses disminuye su prevalencia. Objetivo: determinar la relación entre periodo de Lactancia Materna y Maloclusiones. Material y métodos: se examinó una muestra de 59 niños en edades entre 6 y 13 años en la parroquia Higuerote, Miranda, Venezuela. Se aplicó un cuestionario a cada representante para obtener datos sobre el pe...

  12. Diversidad de anfibios anuros del Parque Nacional El Palmar (Provincia de Entre Ríos, Argentina)

    OpenAIRE

    Gangenova, Elena; Guzmán, Atilio; Marangoni, Federico

    2012-01-01

    El Parque Nacional El Palmar (PNEP) es una importante área protegida de la zona este de la provincia de Entre Ríos, Argentina, creado para conservar uno de los últimos fragmentos de palmera yatay (Butia yatay). En este estudio se examina la biodiversidad de la comunidad de anfibios anuros que habitan tres tipos de ambientes del Parque; el pajonal, el pastizal y la selva en galería. Los muestreos se llevaron a cabo entre los meses de primavera-verano de 2008 y 2009. En total se registraron 16 ...

  13. Diagnóstico diferencial entre el espectro autista y el espectro esquizofrénico

    OpenAIRE

    Paula Pérez, Isabel, 1970-

    2012-01-01

    Introducción: La distinción nosológica entre espectro autista y espectro esquizofrénico está hoy en día claramente delimitada, a pesar de las evidencias científicas de la relación genética entre ambas condiciones. El solapamiento de síntomas negativos de la esquizofrenia con ciertas manifestaciones autistas y la atribución errónea de síntomas positivos de la esquizofrenia en el autismo por profesionales no familiarizados con los trastornos del espectro autista ponen de relieve la importancia ...

  14. Intervención Positiva para mejorar la Felicidad: Practicando gratitud entre hombres y mujeres

    OpenAIRE

    Aranda Rivas, Joel

    2015-01-01

    Treball Final de Grau en Psicologia. Codi: PS1048.Curs: 2014/2015 El objetivo del presente trabajo es estudiar la relación que tienen los sujetos entre una prueba de gratitud (carta de agradecimiento) y sus niveles de felicidad. Se ha utilizado un diseño cuasi-experimental de laboratorio, con dos momentos de recogida de datos sobre una muestra compuesta por 3 grupos de 10 personas, de las cuales 5 son hombres y 5 mujeres, para encontrar diferencia entre el género. Las condiciones experimen...

  15. Genes candidatos para la comorbilidad entre trastornos de ansiedad y trastornos adictivos.

    OpenAIRE

    Gallego Moreno, Xavier

    2008-01-01

    Esta Tesis Doctoral ha consistido en el estudio de los mecanismos implicados en la comorbilidad entre el abuso de drogas y los trastornos de ansiedad, así como en las regiones cerebrales responsables de la coexistencia de estos dos trastornos en modelos transgénicos. Nos hemos centrado en dos grandes familias de genes, que podrían actuar como interfaz genético en la comorbilidad entre trastornos de ansiedad y de abuso de sustancias: neurotrofinas por su intervención en el neurodesarrollo y en...

  16. Asociación entre psoriasis y el control de diabetes mellitus tipo 2

    OpenAIRE

    García Montañez, María Andrea

    2014-01-01

    La psoriasis es una enfermedad que se caracteriza por un proceso inflamatorio crónico y exagerado local y sistémico. Se ha encontrado en la literatura una relación entre la psoriasis y el desarrollo de patologías como diabetes mellitus tipo 2 y el mal control de estas patologías, lo cual aumenta la morbimortalidad de estos pacientes. El presente estudio mostró que no se encontró asociación entre psoriasis y el control de la DM2 , y que la variable mas significativa sobre el control es la ad...

  17. Design, science and naturalism

    Science.gov (United States)

    Deming, David

    2008-09-01

    The Design Argument is the proposition that the presence of order in the universe is evidence for the existence of God. The Argument dates at least to the presocratic Greek philosophers, and is largely based on analogical reasoning. Following the appearance of Aquinas' Summa Theologica in the 13th century, the Christian Church in Europe embraced a Natural Theology based on observation and reason that allowed it to dominate the entire world of knowledge. Science in turn advanced itself by demonstrating that it could be of service to theology, the recognized queen of the sciences. During the heyday of British Natural Theology in the 17th and 18th centuries, the watchmaker, shipbuilder, and architect analogies were invoked reflexively by philosophers, theologians, and scientists. The Design Argument was not systematically and analytically criticized until David Hume wrote Dialogues on Natural Religion in the 1750s. After Darwin published Origin of Species in 1859, Design withered on the vine. But in recent years, the Argument has been resurrected under the appellation "intelligent design," and been the subject of political and legal controversy in the United States. Design advocates have argued that intelligent design can be formulated as a scientific hypothesis, that new scientific discoveries validate a design inference, and that naturalism must be removed as a methodological requirement in science. If science is defined by a model of concentric epistemological zonation, design cannot be construed as a scientific hypothesis because it is inconsistent with the core aspects of scientific methodology: naturalism, uniformity, induction, and efficient causation. An analytical examination of claims by design advocates finds no evidence of any type to support either scientific or philosophical claims that design can be unambiguously inferred from nature. The apparent irreducible complexity of biological mechanisms may be explained by exaptation or scaffolding. The argument

  18. Natural light illumination system.

    Science.gov (United States)

    Whang, Allen Jong-Woei; Chen, Yi-Yung; Yang, Shu-Hua; Pan, Po-Hsuan; Chou, Kao-Hsu; Lee, Yu-Chi; Lee, Zong-Yi; Chen, Chi-An; Chen, Cheng-Nan

    2010-12-10

    In recent years, green energy has undergone a lot of development and has been the subject of many applications. Many research studies have focused on illumination with sunlight as a means of saving energy and creating healthy lighting. Natural light illumination systems have collecting, transmitting, and lighting elements. Today, most daylight collectors use dynamic concentrators; these include Sun tracking systems. However, this design is too expensive to be cost effective. To create a low-cost collector that can be easily installed on a large building, we have designed a static concentrator, which is prismatic and cascadable, to collect sunlight for indoor illumination. The transmission component uses a large number of optical fibers. Because optical fibers are expensive, this means that most of the cost for the system will be related to transmission. In this paper, we also use a prismatic structure to design an optical coupler for coupling n to 1. With the n-to-1 coupler, the number of optical fibers necessary can be greatly reduced. Although this new natural light illumination system can effectively guide collected sunlight and send it to the basement or to other indoor places for healthy lighting, previously there has been no way to manage the collected sunlight when lighting was not desired. To solve this problem, we have designed an optical switch and a beam splitter to control and separate the transmitted light. When replacing traditional sources, the lighting should have similar characteristics, such as intensity distribution and geometric parameters, to those of traditional artificial sources. We have designed, simulated, and optimized an illumination lightpipe with a dot pattern to redistribute the collected sunlight from the natural light illumination system such that it equals the qualities of a traditional lighting system. We also provide an active lighting module that provides lighting from the natural light illumination system or LED auxiliary

  19. Querying Natural Logic Knowledge Bases

    DEFF Research Database (Denmark)

    Andreasen, Troels; Bulskov, Henrik; Jensen, Per Anker

    2017-01-01

    This paper describes the principles of a system applying natural logic as a knowledge base language. Natural logics are regimented fragments of natural language employing high level inference rules. We advocate the use of natural logic for knowledge bases dealing with querying of classes...... in ontologies and class-relationships such as are common in life-science descriptions. The paper adopts a version of natural logic with recursive restrictive clauses such as relative clauses and adnominal prepositional phrases. It includes passive as well as active voice sentences. We outline a prototype...... for partial translation of natural language into natural logic, featuring further querying and conceptual path finding in natural logic knowledge bases....

  20. Denis Diderot on War and Peace: Nature and Morality

    Directory of Open Access Journals (Sweden)

    Whitney Mannies

    2014-01-01

    Full Text Available Las ideas de Denis Diderot sobre la guerra y la paz revelan muchos de las contradiciones que el identificó en el mundo. Por un lado, la guerra es un producto natural de contradiciones entre la ley de la natura y las instituciones humanas. Por otro lado, siempre debe ser sometido a juicio moral basado en conocimiento amplia de la historia y contexto. La guerra puede ser buena si derota a la tiranía, y mala si limita a la libertad e igualdad. La paz puede ser buena si aumenta a la libertad, la igualdad, y la prosperidad, y mala si mantiene la desigualdad. Diderot nunca se permite juicios universales por todos los tiempos y todos los sitios, pero insista en comparaciones y contrastes sin fin entre el mundo moral y el mundo natural. El materialismo filosófico es el fundamento de su manera de entender el mundo, pero los aspectos morales son sus instrumentos de juicio.