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Sample records for cal zeolita sobre

  1. Efecto de la adición de una Zeolita natural sobre la respuesta productiva de terneras de lechería, postdestete Effect of addition a natural Zeolite on productivity of dairy calves after weaning

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    R.G. Pulido

    2004-12-01

    Full Text Available Se implementó un experimento para evaluar el efecto de la adición de una Zeolita natural en la ración postdestete de terneras de lechería, sobre la ganancia de peso, consumo de alimento y eficiencia de conversión alimenticia. Se utilizaron 24 terneras Frisón, las que fueron asignadas a un diseño de bloques al azar, distribuidas en 3 tratamientos de 8 animales cada uno: Control (0% Zeolita, Zeolita3; 3% Zeolita, base materia seca y Zeolita5; 5% Zeolita, base materia seca. La ración base estuvo compuesta por concentrado comercial y ensilaje de pradera en proporciones de ± 40 y 60%, respectivamente. El agua fue entregada a libre disposición. El período experimental se dividió en dos períodos de 30 días. Se determinó el consumo de alimento, el aumento de peso vivo y eficiencia de conversión alimenticia. Los consumos de alimento no mostraron diferencias entre tratamientos (P0.05 y fueron de 2.82 kg, 2.82 kg y 2.80 kg, MS para Control, Zeolita3 y Zeolita5, respectivamente. Las ganancias de peso (kg/día entre tratamientos fueron similares (P0.05 en el primer período (0.286, 0.321 y 0.306 y para el total del experimento (0.396, 0.482 y 0.406 para Control, Zeolita3, y Zeolita5, respectivamente. Sin embargo, en el segundo período el tratamiento Zeolita3 (0.644 kg tuvo una mayor ganancia (PAn experiment was carried out to evaluate the effect of adding natural Zeolites to meals on live weight gain, food intake and food conversion efficiency of dairy calves after weaning. Twenty four female Friesian calves were assigned to a randomised block design, into three treatments of eight animals each: Control; 0% zeolite, Zeolita3; 3% Zeolite, DM basis and Zeolita5; 5% Zeolite, DM basis. The calves were fed with a diet mixed with a commercial calf starter and grass silage. Also, they receive water for ad libitum consumption. The experiment lasted for 65 days. Dry matter intake, live weight gain and feed efficiency were determined. Dry matter

  2. Cálculo por dinámica y mecánica molecular de sitios y calores de adsorción de Dipentenos sobre Zeolita Y

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    Cristian Blanco

    2011-06-01

    Full Text Available Hemos utilizado métodos de la mecánica molecular para estudiar la adsorción de R-limoneno, p-ment-1-eno, p-ment-8-eno y p-mentano sobre faujasita silícea y sobre zeolitas Y con relación Si/Al = 2 que contenían diferentes cationes en el sitio SII (Nal+, Fe2+, FeH y MnH. Los cálculos mostraron que la presencia de dobles enlaces en la molécula que se adsorbe y el tipo de catión en SIl determinan la estabilidad del complejo adsorbatozeolita. Las interacciones entre el huésped y la molécula adsorbida estuvieron dominadas por las contribuciones electrostáticas, las cuales aumentaron con la carga del catión en SII. La orientación de las moléculas insaturadas en la supercaja fue resultado del balance entre el aumento de repulsiones estéricas entre zeolita y molécula adsorbida y el aumento de atracciones electrostáticas como resultado de la minimización de dos grupos de distancias: las distancias entre el catión en SII y los carbonos Sp2 de la molécula adsorbida y las distancias entre los oxígenos estructurales de la zeolita y los hidrógenos de la molécula adsorbida.

  3. EVALUACIÓN DEL EFECTO DE LA IMPREGNACIÓN DE PLATINO SOBRE LAS CARACTERÍSTICAS SUPERFICIALES Y ESTRUCTURALES DE UNA ZEOLITA Y

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    José Carriazo

    2009-05-01

    Full Text Available El presente artículo muestra la evaluación de los cambios texturales, superficiales y estructurales en una zeolita Y empleada en la síntesis de sólidos a base de platino soportado. Las características estructurales se analizaron mediante difracción de rayos X (DRX y las propiedades texturales y morfológicas mediante fisiadsorción de nitrógeno a 77K y microscopía electrónica de barrido (SEM. Adicionalmente se determinó la dimensión fractal y la distribución de potenciales de adsorción para todos los sólidos.   Los resultados muestran  que el proceso de síntesis induce la formación de microporosidad en los sólidos, conservando la estructura de la zeolita y sin ocasionar alteraciones topográficas o energéticas importantes sobre la superficie del soporte.

  4. Intercambio iónico en estado sólido de cobre sobre zeolitas

    OpenAIRE

    Lorente de Pablo, Jon

    2016-01-01

    La creciente preocupación por reducir las emisiones de CO2, responsable entre otros del efecto invernadero, ha promovido el desarrollo de vehículos de bajo consumo de combustible, como son los vehículos ligeros, híbridos y vehículos con motores diésel. Los motores diésel tienen varias ventajas sobre los motores de gasolina: menor consumo de combustible (menor producción de CO2), mayor par motor y mayor durabilidad. Sin embargo, la efectividad de los catalizadores de estos vehículos a la hora ...

  5. Estudio sobre la incorporación y retención de plomo en zeolita natural

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    Abraham Mendoza Córdoba

    2014-12-01

    Full Text Available Las zeolitas son un grupo de minerales que corresponden a la clase de los silicatos (tectosilicatos, entre las diversas utilidades que tienen estos minerales está la resolución de problemas ambientales, particularmente en la eliminación de contaminantes, entre estos se encuentran los metales pesados, los cuales están presentes en los suelos de zonas industriales, en el agua potable, en los afluentes de aguas procedentes de la industria y de la actividad minera, o bien procedentes de mantos acuíferos. Su utilidad se debe en parte por tener una gran capacidad de intercambio iónico, así como también por tener una estructura con cavidades de dimensiones nanométricas, eso le da la capacidad de incorporar elementos ajenos al mineral dentro de dichas cavidades. En el presente trabajo se ha experimentado con Pb incorporándolo en zeolitas (chabazita como acetato de plomo (Pb(CH3COO2 3H2O con el fin de conocer, por una parte, la capacidad del mineral para alojar dicho metal después de activarla, y por otra parte, conocer la capacidad de retención del metal después de un proceso reversible a la incorporación de Pb (activación.

  6. Evaluación del efecto de la impregnación de platino sobre las características superficiales y estructurales de una zeolita y

    OpenAIRE

    José Carriazo; Mario Barrera; Ovidio Almanza

    2009-01-01

    El presente artículo muestra la evaluación de los cambios texturales, superficiales y estructurales en una zeolita Y empleada en la síntesis de sólidos a base de platino soportado. Las características estructurales se analizaron mediante difracción de rayos X (DRX) y las propiedades texturales y morfológicas mediante fisiadsorción de nitrógeno a 77K y microscopía electrónica de barrido (SEM). Adicionalmente se determinó la dimensión fractal y la distribución de potenciales de adsorción para t...

  7. ESTUDIO SOBRE LA INFLUENCIA DE LA INCORPORACIÓN DE CATIÓN METÁLICO EN LA ACTIVIDAD CATALÍTICA Y COMPORTAMIENTO MAGNÉTICO DE ZEOLITAS ZSM-5

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    Clara Saux

    2011-01-01

    Full Text Available Se sintetizaron zeolitas ZSM-5 con relación molar Si/Al 17 por el método hidrotérmico, las que fueron modificadas con cobalto y cromo por la técnica de impregnación por vía húmeda en un 3 % p/p del metal. Los resultados obtenidos por DRX, indican que la incorporación de ambos metales de transición no altera la estructura, ni la cristalinidad de la matriz original. Se detecta la presencia de especies Co3O4 para Co-ZSM-5 y Cr2O3 para el caso de Cr-ZSM-5. De las medidas de magnetización a temperatura ambiente se observa el efecto de los metales de transición sobre el comportamiento netamente diamagnético de la matriz zeolítica con la aparición de ciclos de histéresis que no saturan por presentar una componente paramagnética. Ambos materiales fueron probados como catalizadores para la reacción de oxidación selectiva de estireno con peróxido de hidrógeno, presentando buenos resultados en actividad con una elevada selectividad (superior al 70 % hacia benzaldehído.

  8. Zeolita natural de Palmarito de Cauto para el tratamiento de licores residuales de industrias de fibrocemento

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    Valduvina Córdova-Rodríguez

    2013-03-01

    Full Text Available Se evaluó la posibilidad de utilización de la zeolita de Palmarito de Cauto (Santiago de Cuba para el tratamiento del licor residual de la industria de fibrocemento. Dos clases granulométricas de zeolita (A: granos entre 1 mm y 2 mm y B: granos entre 3 mm y 5 mm se pusieron en contacto con muestras del residual con el fin de remover de este el cromo disuelto y evaluar el efecto sobre la basicidad (pH del licor. Se pudo constatar la capacidad de la zeolita para remover el cromo disuelto, mayoritariamente en forma de Cr (VI (iones cromato, y en menor cantidad, como Cr (III. La remoción de Cr (VI ocurrió a través de un proceso de adsorción y la del Cr (III por intercambio iónico. Se obtuvo la disminución del pH del residual desde valores superiores a 12 hasta cercanos a 7 unidades. Esto permite sugerir el empleo de la zeolita de Palmarito para remover el cromo y ajustar el pH del licor residual de la industria de fibrocemento hasta valores normados para su vertimiento o reutilización industrial

  9. Influencia del tipo de curado sobre un conglomerante cal-toba-yeso

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    Álvarez Cabrera, J. L.

    1994-09-01

    Full Text Available Mortars with lime-tufa-gipsum binder where studied when submitted to different types of curing. The mortars were prepared with a binder/sand ratio of 1/3 and a/c= 0,7, and they were demoulded after 24 hours. In the tested specimens, variations in values of bending strength, compressive strength and volumetric weight were observed. The best values of mechanical strength were obtained with the specimens submitted to accelerated treatment such as curing in autoclave with saturated vapour, while the smallest values of strength were achieved in the specimens submitted only to weathering.

    Se estudiaron morteros con un conglomerante de cal-toba-yeso, sometidos a diferentes tipos de curado. Los morteros fueron preparados con una relación conglomerante arena de 1/3 y a/c 0,7 desmoldadas a las 24 horas. Se observaron variaciones en los valores de resistencia a la flexión, compresión y peso volumétrico en las probetas ensayadas, y los mejores valores de resistencia mecánica se obtuvieron con aquellas probetas sometidas a tratamientos acelerados, como el curado en autoclave a vapor saturado, mientras que las menores resistencias se produjeron en probetas sometidas sólo a la intemperie.

  10. Nitrógeno residual y lixiviado del fertilizante en el sistema suelo-planta-zeolitas Residual and leached nitrogen in soil plant zeolite systems

    OpenAIRE

    Gabriela Civeira; Mónica Beatríz Rodríguez

    2011-01-01

    La eficiencia de uso del N en agroecosistemas es considerada baja principalmente a causa de las pérdidas atribuidas a procesos entre los cuales se cuenta la lixiviación de los nitratos. Dichas pérdidas podrían ser mitigadas por modificación de la matriz del suelo incorporando zeolitas naturales en las formulaciones con fertilizantes nitrogenados. El objetivo principal de este trabajo fue evaluar el efecto de las zeolitas naturales en formulaciones con fertilizantes nitrogenados sobre los nive...

  11. CALS Mapping

    DEFF Research Database (Denmark)

    Collin, Ib; Nielsen, Povl Holm; Larsen, Michael Holm

    1998-01-01

    To enhance the industrial applications of CALS, CALS Center Danmark has developed a cost efficient and transparent assessment, CALS Mapping, to uncover the potential of CALS - primarily dedicated to small and medium sized enterprises. The idea behind CALS Mapping is that the CALS State...... of the enterprise is compared with a Reference Enterprise Model (REM). The REM is a CALS idealised enterprise providing full product support throughout the extended enterprise and containing different manufacturing aspects, e.g. component industry, process industry, and one-piece production. This CALS idealised...... enterprise is, when applied in a given organisation modified with respect to the industry regarded, hence irrelevant measure parameters are eliminated to avoid redundancy. This assessment of CALS Mapping, quantify the CALS potential of an organisation with the purpose of providing decision support to the top...

  12. As influências sobre as crianças na escolha de marcas de roupa e calçado

    OpenAIRE

    Agante, Luísa Cláudia Lopes

    2009-01-01

    Doutoramento em Gestão O objectivo deste projecto foi o de contribuir para o corpo teórico de conhecimentos relacionados com a influência sobre a criança na escolha de marcas de roupa e calçado, através da construção e teste de um modelo que conseguisse integrar os diversos determinantes da susceptibilidade de influência inter-pessoal da criança, e os impactos dessa susceptibilidade nas dimensões cognitiva, afectiva e comportamental das marcas. A metodologia adoptada consist...

  13. ELIMINACIÓN DE COLORANTES CATIÓNICOS USANDO OZONO, ZEOLITA NATURAL Y OZONO/ZEOLITA CATIONIC DYES REMOVAL USING OZONE, NATURAL ZEOLITE, AND OZONE/ZEOLITE

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    Héctor Valdés

    2009-12-01

    Full Text Available En este trabajo se comparan resultados experimentales de remoción azul de metileno (MB utilizando tratamientos basados en la oxidación con ozono (O3, la adsorción con zeolita natural (ZN, y tratamiento simultáneo de adsorción y oxidación con ozono en presencia de zeolita natural (O3/ZN. Se evalúa, a escala de laboratorio, el efecto del pH (2-8 y la presencia de sustancias atrapadoras radicales libres (iones acetatos en la velocidad de remoción y en la eficiencia de los procesos. Los experimentos se realizaron en un reactor diferencial compuesto por un estanque de 1 dm³ y una columna de 19 cm³ de capacidad. El ozono fue generado a razón de 5 g O3/h. Los resultados mostraron que el sistema simultáneo de oxidación/adsorción O3/ZN incrementa la velocidad de remoción del MB con respecto a los procesos separados de ozonización y adsorción con zeolita. En presencia de sustancias atrapadoras de radicales, se observó un 70% de disminución en la velocidad de remoción de MB cuando se empleó el tratamiento con O3 y sólo un 25% cuando se utiliza el tratamiento combinado O3/ZN. Los resultados sugieren que la reacción de oxidación del MB en el sistema tiene lugar fundamentalmente sobre la superficie de la zeolita.This paper compares experimental results on methylene blue (MB removal systems based on ozone oxidation, zeolite adsorption, and simultaneous adsorption-oxidation using ozone in the presence of natural zeolite. The effect of pH (2-8, and the presence of radical scavengers (sodium acetate on process rates and removal efficiencies are assessed at laboratory scale. The experimental system consisted of a 1L differential circular flow reactor and an ozone generator rated at 5 g O3/h. Results show that ozone oxidation combined with zeolite adsorption increases the overall MB oxidation rate with respect to ozonation process and zeolite adsorption. In presence of free radical scavenger, only a 25% of reduction on MB removal rate are

  14. ESTUDIO DEL IMPACTO TÉCNICO DE MEZCLAS DE CONCRETO HIDRÁULICO POR LA SUSTITUCIÓN PARCIAL DE CEMENTO POR ZEOLITA

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    I. Miranda Pasos

    2014-06-01

    Full Text Available La industria de la construcción cada vez más consciente de la necesidad de ejecutar obras con materiales que se obtengan y/o utilicen procesos industriales que minimicen la contaminación y, que contribuyan en el comportamiento de un producto como lo es el concreto hidráulico en la construcción, ha estado buscando alternativas de materiales que sustituyan total o parcialmente al cemento por otro cementante que contamine menos en su procesos de obtención y que conserve las propiedades o las mejore. Una alternativa para sustitución parcial del cemento es la zeolita, es un mineral que se obtiene por proceso de excavación y molienda de puzolana. La norma ASTM-618, define a las puzolanas como materiales silíceo o aluminio-silíceo que por sí solo poseen poco a ningún valor cementante, pero cuando se han dividido finamente y en presencia de agua e hidróxido de calcio (Cal reaccionan químicamente a temperatura ambiente para formar cementantes (Miranda, 2008. Recientemente se ha estudiado el efecto de adicionar mineral Cal-Zeolita para la elaboración del concreto, cuyos resultados son favorables al comportamiento mecánico y su durabilidad (Dopico J.J., et al. 2009. Para la elaboración de morteros para recubrimientos al incorporar arenas zeolíticas como sustituto de la arena tradicional (Tiburcio et al. 2008. El presente proyecto evaluó el comportamiento del concreto hidráulico en estado fresco y endurecido al sustituir de manera parcial cemento por zeolita. Se enfocó a la evaluación del comportamiento mecánico como al diseño de la mezcla de concreto hidráulico fabricado con cemento normal y con cemento-zeolita. Tomando en cuenta los resultados obtenidos, la zeolita incorporada en porcentajes entre el 5% y 10 % tiende a valores de resistencias muy cercanos al concreto normal, los modelos obtenidos así lo corroboran, por lo que se puede concluir la factibilidad de sustitución parcial de cemento por zeolita tomando en cuenta el

  15. Efecto de tres enmiendas orgánicas de la cal sobre la disponibilidad y la adsorción de fósforo

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    Carmen Rosa Gómez Laverde

    2010-09-01

    Full Text Available Para observar el efecto de materiales orgánicos y de la cal sobre la disponibilidad y la adsorción de fósforo en un suelo fuertemente ácido (Inceptic Hapludox, pobre en P, se efectuaron un ensayo de incubación en invernadero y un estudio de adsorción de P. Se utilizaron macetas que contenían 400 g de suelo, a los cuales se les dio una fertilización básica con aplicaciones de 90 kg P2O2/ha. Se aplicó gallinaza, compost o caupí (Vigna unguiculata en dosis de 0,0; 0,8 y 2,4 g M.O./lOO g suelo.

  16. SOBRE LA EDAD DE LOS HORNOS DE CAL EN EL ÁREA MAYA (About the age of the lime kilns in the Maya area

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    Soledad Ortiz Ruiz

    2015-12-01

    Full Text Available La investigación que presentamos es sobre el hallazgo y la datación arqueomagnética de hornos de cal en el área maya, México. La relevancia de la datación arqueomagnética consiste en localizar las construcciones arquitectónicas y dilucidar el periodo de utilización por las sociedades que habitaron la zona de ubicación de dichas construcciones. Asumimos que se trataba de hornos prehispánicos por su asociación con el contexto de la excavación. Sin embargo, los resultados de la combinación de dataciones y métodos arqueométricos permitieron ubicar estas estructuras en distintos periodos de utilización y, por tanto, asumir la continuidad de esta tecnología productiva más allá del periodo prehispánico. Asimismo los trabajos de datación nos permiten clarificar la utilización de esta tecnología y práctica productiva en dicha zona cultural. ENGLISH: The investigation presented here is related to the discovery and archaeomagnetic dating of lime kilns in the Maya area, Mexico. The relevance of such dating is to locate architectural constructions and elucidate the period of use by societies that are responsible for their construction. We assume a prehispanic period for the kilns because of their context within the excavation. The combination of dating methods and archaeometric experiments allowed the identification of different periods of use and, therefore, suggests the persistence of this production technology beyond the prehispanic period. Dating work also allows us to clarify the use of this technology and productive practices in this cultural area.

  17. Efeito agudo do calçado de diferentes alturas sobre o comportamento angular do tornozelo Acute effect of shoes with different heights on the ankle angular behavior

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    Mirieli Denardi Limana

    2012-09-01

    Full Text Available Estudos descrevem que o uso de salto alto exige do corpo uma série de ajustes compensatórios, a fim de manter os seus movimentos e equilíbrio próximos à normalidade. No andar, a interferência do salto alto sobre o pé e sobre a articulação do tornozelo parece desencadear uma postura diferente da posição anatômica. O presente estudo teve como objetivos comparar a cinemática sagital do tornozelo em diferentes calçados e verificar a existência de um limite de altura de salto que possa levar a articulação do tornozelo a adaptações durante o andar. Esta pesquisa, caracterizada como experimental, foi constituída por uma análise cinemática bidimensional do tornozelo no plano sagital. A amostra foi composta por dez universitárias, com média de idade de 19,2 (±1,8 anos, que caminharam sobre uma esteira utilizando um tênis e três sandálias do tipo tamanco, com saltos de 3, 7 e 10 cm. Para cada ciclo de passada, foram identificados picos de movimento do tornozelo referentes à dorsiflexão e à flexão plantar. Os resultados mostraram que na flexão plantar, com o aumento da altura do salto, há uma tendência de acentuação do pico angular do tornozelo. Concluiu-se que saltos acima de 3 cm de altura induzem a articulação do tornozelo a realizar uma flexão plantar sustentada, mudando as características da marcha na fase de apoio e de balanço. Tais evidências sugerem alturas de saltos menores de 3 cm como limites de segurança para manutenção do padrão normal da marcha em mulheres jovens.Studies have described that using high heels requires a series of compensatory adjustments of the body to keep its movements and balance close to normality. When walking, the interference of high heels on the foot and on the ankle joint seems to initiate a different posture from the anatomical position. The present study aimed at comparing the sagittal kinematics of the ankle in different shoes and at verifying the existence of a height

  18. Introduktion til CALS

    DEFF Research Database (Denmark)

    Kirkby, Phillip; Larsen, Michael Holm; Langer, Gilad;

    1997-01-01

    Denne rapport er udarbejdet af CALS Center Danmark og er en generel introduktion til CALS. Rapportenbeskriver indholdet i CALS ud fra fire synsvinkler: visionen i CALS, principper i CALS, det tekniske indhold,og organiseringen af CALS internationalt og i Danmark. Der redegøres for historien bag...... CALS, hvorfor der er behov for CALS og hvordan CALS standarderne ermed til at gøre information uafhængig af den teknologi, som benyttes. Forskellen mellem syntaktisk ogsemantisk standard defineres, og det beskrives, hvorledes CALS kan fungere som en "enabler" forrestrukturering af forretningsprocesser....... Endelig uddybes de videre perspektiver for CALS, hvordan CALSkan føre til nye dynamiske organisationsformer, som fungerer fuldstændig virtuelt på tværs af geografi og tid.Nye begreber som "Extended Enterprise", "Agile manufacturing" og "Virtuelle virksomheder" introduceres. Dokumentet afsluttes med...

  19. ${\\cal N}$ Goldstini

    CERN Document Server

    Cribiori, N; Farakos, F

    2016-01-01

    We study field theories with ${\\cal N}$ extended non-linearly realized supersymmetries, describing the couplings of models that contain ${\\cal N}$ goldstini. We review all the known formulations of the ${\\cal N}=1$ goldstino theories and we generalize them to an arbitrary number ${\\cal N}$ of non-linearly realized supersymmetries. We explicitly prove the equivalence of all these extended supersymmetry breaking models containing ${\\cal N}$ goldstini and reformulate the theory with ${\\cal N}$ supersymmetries in terms of standard ${\\cal N}=1$ constrained superfields.

  20. Nitrógeno residual y lixiviado del fertilizante en el sistema suelo-planta-zeolitas Residual and leached nitrogen in soil plant zeolite systems

    Directory of Open Access Journals (Sweden)

    Gabriela Civeira

    2011-12-01

    Full Text Available La eficiencia de uso del N en agroecosistemas es considerada baja principalmente a causa de las pérdidas atribuidas a procesos entre los cuales se cuenta la lixiviación de los nitratos. Dichas pérdidas podrían ser mitigadas por modificación de la matriz del suelo incorporando zeolitas naturales en las formulaciones con fertilizantes nitrogenados. El objetivo principal de este trabajo fue evaluar el efecto de las zeolitas naturales en formulaciones con fertilizantes nitrogenados sobre los niveles de N residual y lixiviado en un suelo cultivado con maíz. Se hipotetizó que la zeolita aplicada con el fertilizante nitrogenado, provocará la reducción de los niveles de N residual y lixiviado aunque también afectando la disponibilidad de N para la planta. Un ensayo en condiciones controladas fue realizado entre los meses de febrero y abril de 2009. Se sembró maíz (Zea mays L. en macetas cuyo nivel de humedad fue mantenido en capacidad de campo. La zeolita y el fertilizante nitrogenado (Urea: [(NH22CO], sólida granulada, 46-0-0 fueron incorporados como mezcla física seca, al inicio del ensayo. Los tratamientos aplicados fueron T: testigo, Z1: 120 kg zeolita ha-1, Z2: 200 kg zeolita ha-1, N: 200 kg N ha-1, NZ1: 120 kg zeolita ha-1 + 200 kg N ha-1, NZ2: 200 kg zeolita ha-1 + 200 kg N ha-1. En el estado de floración femenina (R1 se tomaron muestras de suelo para la determinación del N residual (N-NO3 y N-NH4 y planta para la cuantificación de la materia seca (MS y el N absorbido. La eficiencia de uso de N (EUN fue evaluada en cada tratamiento. Finalmente, se realizó una lixiviación forzada con el fin de cuantificar el N lixiviado. Los datos obtenidos muestran que la aplicación conjunta del fertilizante con la menor dosis de zeolita (NZ1 incrementó significativamente el nivel de N absorbido por el maíz, la materia seca y la EUN respecto del tratamiento N. Estos resultados se explican por el efecto favorable de las zeolitas sobre la

  1. Estudio del encapsulamiento de metales en zeolita ZSM–5

    OpenAIRE

    Corrales Ortega, Carlos Darío

    2013-01-01

    Ciencia de Materiales Avanzados Resumen: La preparación y encapsulamiento de metales ha sido de gran interés en el desarrollo de materiales a escala nano por sus aplicaciones como sensores químicos, catalizadores, entre otros. Los catalizadores zeolíticos ZSM–5 se hicieron en cuatro etapas, i) la preparación de la zeolita ZSM–5 a escala manométrica, ii) síntesis de la sílice MCM–41, iii) compatibilización para la formación del hibrido MCM–41/ZSM–5 por interacciones electrostáticas y iv) en...

  2. PRIMJENA PRIRODNIH ZEOLITA U ZAŠTITI OKOLIŠA

    OpenAIRE

    Vojnović, Branka; Margeta, Karmen; Šiljeg, Mario; Cerjan Stefanović, Štefica; Bokić, Ljerka

    2013-01-01

    SAŽETAK: U ovome radu sažeta su istraživanja i vlastita iskustva o mogućnosti iskorištavanja svojstava prirodnog zeolita kod završnog stupnja obrade vode za uklanjanje tragova metalnih iona kao kroma, srebra i arsena. Arsen prisutan u prirodnim vodama je genetskog podrijetla zbog procesa razlaganja minerala kojim prolaze podzemne vode. Ostali ispitivani metalni ioni su uglavnom antropogenog podrijetla zbog utjecaja kemijske, tekstilne i metalurške industrije. Rezultati istraživanja pokazali s...

  3. SÍNTESIS, CARACTERIZACIÓN Y APLICACIONES DE ZEOLITA Co-ZSM-5

    Directory of Open Access Journals (Sweden)

    Clara Saux

    2012-01-01

    Full Text Available Se preparó una zeolita con estructura MFI a la cual se le incorporó cobalto por el método de impregnación. Se realizaron post-tratamientos térmicos sobre la muestra Co-ZSM-5: oxidación y reducción. Se analizaron por XRD, Raman y TPR, a efectos de determinar la naturaleza de las especies activas presentes. Se evaluaron propiedades catalíticas para la reacción de oxidación de estireno, logrando mayor conversión para la muestra oxidada, donde se observó la presencia de pequeños clusters de Co3O4 extra-red y Co interactuando fuertemente con la matriz. Se estudió el comportamiento magnético de las muestras variando la magnetización M en función de la temperatura T y de M en función del campo aplicado, a distintas T. Se observó que el comportamiento de la muestra oxidada es puramente superparamagnético, mientras que en la muestra reducida aparecen varios tipos de clusters que se evidencian en distintos picos que aparecen en la correspondiente curva M(T.

  4. Natural Mexican zeolite, potential material for hydrogen storage; Zeolita natural mexicana, material para su posible uso en el almacenamiento de hidrogeno

    Energy Technology Data Exchange (ETDEWEB)

    Iturbe-Garcia, J. L.; Lopez Munoz, B. E. [Instituto Nacional de Investigaciones Nucleares (Mexico)]. E-mail: joseluis.iturbe@inin.gob.mx

    2009-09-15

    This work presents a study of the use of natural Mexican zeolite as a possible alternative for hydrogen storage. This zeolite material is from the state of Sonora. Its particle size was decreased using a grinding treatment with a mechanical alloying system for 5 hours. The mechanical alloying equipment was built in our Institute (Instituto Nacional de Investigaciones Nucleares, ININ). Later, zeolite in powder form was characterized with x-ray diffraction and sweep electron microscopy. It was heated in a micro-reactor at 350 degrees Celsius, which was simultaneously emptied over 2 hours to eliminate humidity and possible gases trapped in its structure. Next, the temperature was reduce to 10 degrees Celsius and it was placed in contact with ultra-high pure hydrogen at a pressure of 10 bars for 10 minutes. The analysis of hydrogen trapped in the zeolite was conducted with gas chromatography. The results of the chromatograms indicate that the zeolite absorbed and liberated the hydrogen in completely different conditions than those reported in the literature. That is, with our experimental conditions at low pressure and temperature, the hydrogen was absorbed in this type of material. [Spanish] En este trabajo se presenta un estudio sobre el uso de una zeolita natural de origen mexicano como posible alternativa para almacenar hidrogeno. Este material zeolitico procede del Estado de Sonora, al cual se le disminuyo el tamano de particula mediante un tratamiento de molienda con un sistema de aleado mecanico durante 5 horas. El equipo de aleado mecanico se construyo en nuestro Instituto (Instituto Nacional de Investigaciones Nucleares, ININ). Posteriormente, la zeolita en forma de polvo se caracterizo por medio de difraccion de rayos X y microscopia electronica de barrido. Se sometio a calentamiento en un micro-reactor a 350 grados Celsios y al mismo tiempo haciendo vacio durante 2 horas, para eliminar humedad y posibles gases que estuvieran atrapados en su estructura. En

  5. Mejorador de suelo a partir de una zeolita natural: Una propuesta sustentable para la agricultura

    Directory of Open Access Journals (Sweden)

    Rafael Jordán Hernández

    2013-01-01

    Full Text Available La zeolita es un recurso mineral abundante en el Estado de Sonora, cuya calidad lo convierte en un importante factor corrector de los deteriorados suelos de cultivo del Estado. La agricultura sonorense en los últimos años ha perdido tierras de labor por la salinidad, debido a la escasez de agua y la necesidad de obtenerla cada vez de pozos más profundos lo que provoca su salinización. El presente trabajo aborda el uso de una zeolita natural modificada químicamente para ser empleada como mejorador del suelo mediante intercambio iónico. El método empleado es similar a los empleados a nivel mundial, con la sola diferencia de la especificidad química, mineralógica de esta zeolita natural de Sonora.

  6. Consolidating BPR with CALS

    DEFF Research Database (Denmark)

    Larsen, Michael Holm; Leinsdorff, Torben; Madsen, Claus;

    1999-01-01

    the efficiency of the concept. However, limited directions are provided.This article suggests that Continuous Acquisition and Lifecycle Support (CALS) is a viable concept to complement and thus consolidate BPR. This is based on two hypotheses stating that CALS provides guidelines for applying IT to increase...

  7. Efeito dos conservantes sobre a densidade calórica em músculos de Hoplias aff. malabaricus (Bloch, 1794 (Osteichthyes, Erythrinidae Effect of preservatives on caloric density in the muscles of Hoplias aff. malabaricus (Bloch, 1794 (Osteichthyes, Erythrinidae

    Directory of Open Access Journals (Sweden)

    Milena Morimoto

    2002-05-01

    Full Text Available A conservação de amostras para a determinação dos valores calóricos em estudos de bioenergética de peixes tem se apresentado, na literatura, com uma variedade de métodos. Com o intuito de identificar o efeito de conservantes sobre os resultados obtidos com as diferentes técnicas de conservação, foram coletados exemplares adultos de Hoplias aff. malabaricus (Osteichthyes, Erythrinidae na planície de inundação do rio Paraná. De cada exemplar, foram retiradas 5 amostras da musculatura, as quais foram submetidas aos seguintes tratamentos: formol (4%, álcool (70%, congelamento (-10oC, nitrogênio líquido (-180oC e estufa à 60oC (amostra controle. Depois de 30 dias, todas as amostras foram secas em estufa à 60oC e posteriormente procedeu-se à determinação calórica de cada uma das amostras em bomba calorimétrica. Detectaram-se diferenças significativas entre os tratamentos (ANOVA: N=206; F=50,28; pThe preservation of samples for caloric values determination in bioenergetic studies of fish has been presented literature with a variety of methods. To identify the effect of preservatives over the results obtained with different preservation techniques, adult individuals of Hoplias aff. malabaricus (Osteichthyes, Erythrinidae were collected in Paraná river floodplain. From each fish, five samples were extracted from its dorsal muscle and submitted each sample for a different treatment: ice (-10ºC, formaldehyde (4%, alcohol (70%, liquid nitrogen (-180oC and a control sample immediately oven dried (60oC. After 30 days, the treatments were oven dried (60oC and caloric values of each sample were determined in a caloric bomb. Significant differences among the treatments were found (ANOVA: n = 206; F = 50.28; p < 0.001. Some evaluations of the effects of each treatment were presented for further comparisons with the results published in literature.

  8. SÍNTESIS SELECTIVA DE BENZALDEHÍDO USANDO ZEOLITAS MODIFICADAS CON METALES DE TRANSICIÓN

    Directory of Open Access Journals (Sweden)

    Clara Saux

    2012-01-01

    Full Text Available Se estudió la oxidación selectiva de estireno para la obtención de benzaldehído sobre zeolitas ZSM-5 modificadas con diferentes metales de transición (cromo, cobalto, hierro, zinc, manganeso y cobre y utilizando peróxido de hidrógeno como oxidante. Dado que los mejores resultados se obtuvieron utilizando Cr-ZSM-5, estos materiales se estudiaron evaluando el efecto del tiempo de reacción, la masa de catalizador, la relación molar estireno/hidroperóxido, la naturaleza del solvente y la temperatura de reacción. Los mejores resultados de las condiciones evaluadas se obtuvieron trabajando con una relación molar sustrato/oxidante de 0,45 y utilizando acetonitrilo como solvente, dado su carácter aprótico y de mayor polaridad de los solventes evaluados (acetonitrilo, acetona, 2-butanol y 2-propanol. El aumento en la temperatura de reacción mostró un incremento en la conversión de estireno, el cual se desaceleró al superar los 60 oC por descomposición térmica del peróxido de hidrógeno.

  9. Turba y zeolita como soportes de inoculantes microbianos con acción fertilizante

    Directory of Open Access Journals (Sweden)

    Arianna Núñez

    2009-01-01

    Full Text Available La fertilización constituye junto a la disponibilidad de agua, uno de los principales requerimientos en el desarrollo agrícola. En la actualidad y debido a los altos costos de los fertilizantes químicos, cobra mayor importancia el desarrollo de tecnologías que involucren fertilizantes biológicos que incorporan al suelo las cantidades necesarias de nitrógeno, fósforo y potasio. Resulta necesaria la obtención de formulaciones sólidas que aumenten la estabilidad en el tiempo y favorezcan su transportación y almacenamiento. Por esta razón, este trabajo aborda las posibilidades que brindan la zeolita y la turba como soportes de inoculante microbiano. El estudio bibliográfico mostró que a pesar de las diferencias en las propiedades físicas y químicas de la zeolita y la turba, ambas se utilizan como soporte de inoculantes bacterianos. El procesamiento de la turba requiere más tecnología que el de la zeolita, la disponibilidad de esta última en Cuba, es mayor si se compara con la turba que además está protegida por ser un recurso no renovable.

  10. REMOCIÓN DE COBRE Y NÍQUEL POR INTERCAMBIO CATIÓNICO CON UNA ZEOLITA NATURAL

    Directory of Open Access Journals (Sweden)

    Arnoldy Estupiñan

    2010-10-01

    Full Text Available Se empleó la zeolita natural clinoptilolita, para remover cobre y níquel de aguas residuales de una industria de galvanotecnia. La capacidad de intercambio determinada para la zeolita transformada al estado homoiónico sódico, fue de 0,794 meq/g para cobre y 0,447 meq/g para níquel. Se realizaron ensayos en cochada y en columna, alcanzando éste último un mayor acercamiento al equilibrio. En los ensayos de regeneración, la zeolita sódica concentró el cobre hasta 23,5 veces con respecto al valor que presenta en los enjuagues de los baños de recubrimiento en medio ácido, mostrando su potencialidad para usarla en el tratamiento de estos residuos, por su efectividad y bajo costo.

  11. Fond Memories of Cal Council

    Science.gov (United States)

    Minnis, Douglas L.

    2015-01-01

    This article describes the author's personal involvement in the California Council for the Education of Teachers (Cal Council), beginning in 1960 and spanning four decades, which involved associations with key people in California teacher education and credentialing. The Cal Council was organized for leaders in teacher education from the…

  12. Efeito do ultrassom associado ao gel de calêndula sobre a atividade reparadora em lesões musculares experimentais = Effect of ultrasound associated with calendula gel on restorative activity in experimental muscular injuries

    OpenAIRE

    Ana Clara de Albuquerque Botura; Diego da Silva Ricoldy; Juliano Yasuo Oda; Orlando Seiko Takemura

    2010-01-01

    Diversas técnicas têm sido propostas para o tratamento de lesões musculares, sendo a do ultrassom terapêutico uma das mais utilizadas. Além dos efeitos do ultrassom, este facilitaria, ainda, a permeação de drogas pelos tecidos (fonoforese). A calêndula é um fitoterápico que apresenta atividade cicatrizante empregada popularmente no tratamento de lesões. O objetivo deste estudo foi avaliar a eficácia do ultrassom, da fonoforese e a influência da aplicação tópica do gel extraído da Calendula of...

  13. Aktivni multifunkcijski pamuk obrađen nanočesticama zeolita

    OpenAIRE

    Grancarić, Ana Marija; Marković, Lea; Tarbuk, Anita

    2007-01-01

    Prirodni zeoliti su kristali aluminijskih silikata s jedinstvenim apsorpcijskim i katalitičkim svojstvima. U medicini im se pripisuju antitumorska, antialergijska, antiseptička, antireumatska i druga svojstva, te snažan utjecaj na poboljšanje cirkulacije. Dodatak nanočestica zeolita u različitim fazama predobrade i obrade tekstila novost je u oplemenjivanju tekstila za multifunkcijske učinke zaštite. Zeoliti doprinose zaštiti od UV zračenja jer raspršuju UV zračenje, za razlilku od drugih sre...

  14. AMPLEX-SiCAL

    International Nuclear Information System (INIS)

    This paper reports on an analog signal processor using commercial 3 μm CMOS technology which has been designed and produced for the silicon luminosity calorimeter SiCAL of the ALEPH experiment. This processor is a modified version of the AMPLEX integrated circuit designed for the inner silicon detector of the UA-2 experiment. The output voltage swing has been increased to more than 5.5 Volt as required for the large dynamic range of 1000 MIPs or 3.8 pC2. A fast analog summation, based on a neural network principle called follower aggregation, computes the average input charges for triggering purposes. The chip contains 16 channels, with a charge amplifier, shaper, track-and-hold stage, multiplexer, fast analog sum and a calibration system. The power consumption of the overall chip is 100 mW. The equivalent noise charge is less than 0.13MIP (0.5 fC rms) for a 50 pF detector capacitance, and the peaking time is about 250ns

  15. Caracterización de mezclas de poliamina alifática comercial con sacarosa, zeolita y composites metálicos mediante espectrometría FTIR

    Directory of Open Access Journals (Sweden)

    Mercedes Guerra

    2010-01-01

    Full Text Available Se caracteriza la mezcla de poliamina alifática comercial con sacarosa, zeolita y composites con aluminio, bronce y hierro, así como mezclas de éstos con resinas furano epoxídicas (FAM, tratadas con y sin calor, mediante espectroscopía FTIR. La caracterización se comienza por la asignación de los espectros IR de cada uno de los componentes de la mezcla y se muestran las posiciones de las bandas con las asignaciones de las frecuencias características más importantes de los componentes que cumplen con la estructura química planteada. Del análisis de los espectros IR se reporta la desaparición de la banda de vibración de streching de la amina primaria y se mantiene la banda de vibración de streching del grupo OH 3350 cm-1 con baja intensidad, lo que evidencia una reacción química con los grupos aminos y OH, pero se observa C-N. Se mantienen las bandas con frecuencia características del anillo furánico y la estructura cíclica de la sacarosa. El tratamiento con calor, aparentemente, no influye sobre la estructura molecular de la mezcla.

  16. ISOMERIZACIÓN DEL 1-CICLOHEXILOCTANO EN ZEOLITAS H-ZSM-22 Y H-Y

    Directory of Open Access Journals (Sweden)

    Jorge Quintero

    2009-06-01

    Full Text Available En este trabajo presentamos los resultados de la evaluacion energetica de los intermediarios de la isomerización del 1-ciclohexiloctano en dos etapas. La primera etapa corresponde a la isomerización del 1-ciclohexiloctano en fase gaseosa vía carbocationes clásicos, usando el nivel de teoría DFT/B3LYP y conjunto de funciones base 6-31G.  En la segunda etapa se desarrolló la coordenada de reacción de la isomerización del 1-ciclohexiloctano en presencia de zeolitas ácidas H-ZSM-22 y H-Y empleando el método ONIOM, usando los niveles de teoría B3LYP/6-31G:UFF. Nuestros resultados muestran diferencias significativas entre las reacciones en fase gaseosa y condensada. Estas diferencias ponen de manifiesto la influencia del confinamiento cuántico que sufren las moléculas al interior de los sistemas microporosos del tipo zeolitas.

  17. CalCOFI Egg Counts

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Fish egg counts and standardized counts for eggs captured in CalCOFI icthyoplankton nets (primarily vertical [Calvet or Pairovet], oblique [bongo or ring nets], and...

  18. CalNex Observational Data

    Data.gov (United States)

    U.S. Environmental Protection Agency — Observations made during the 2010 CalNex measurement campaign. This dataset is associated with the following publication: Woody , M., K. Baker , P. Hayes, J....

  19. Adubação da soja: IV - Estudo preliminar sobre maneiras de efetuar a calagem com calcário dolomítico e cal extinta Fertilizing soybeans: IV - Experiments on methods of applying liming materials

    Directory of Open Access Journals (Sweden)

    Shiro Miyasaka

    1966-01-01

    Full Text Available Em experiência realizada por três anos em solo ácido foi estudado o efeito, sôbre a produção da soja, da calagem com calcário dolomítico e cal extinta, aplicados em sulcos laterais aos de plantio ou a lanço, sòmente no primeiro ano ou parceladamente. O aumento médio de produção proporcionado pela calagem correspondeu a 59%, mas as diferenças entre os dois corretivos e os métodos de aplicação foram pequenas. O efeito imediato das doses empregadas sòmente no primeiro ano foi bem menor que o residual.An experiment was conducted on an acid soil at Campinas, State of São Paulo, to study the effects, on the yield of soybeans, of hydrated lime and dolomitic limestone broadcast or sideplaced, the entire doses being applied in the first year or portionswise over two or three years. The average increase through liming corresponded to 59%, but the differences between the two liming materials, as well as those shown by the methods of application were small. The direct effect of the entire doses applied in the first year was smaller than the residual effect.

  20. David Georgi's Cal Council Presidency

    Science.gov (United States)

    Georgi, David

    2015-01-01

    When the author was asked to write a mini-memoir about his time as Cal Council president, his first thought was "Now, when exactly was that?" He says that pretty much summarizes the quality of his memory these days. The author's first contact with the California Council on the Education of Teachers was back in the 1970s when the…

  1. Procesos industriales de acondicionamiento de caolín para su utilización como materia prima en la síntesis de zeolita X

    OpenAIRE

    García Colina, Fernando

    1999-01-01

    [spa] La caolinita, constituyente principal del caolín, es una arcilla de fórmula 2SiO(2) Al(2).O(3).2H(2)O que da lugar a un producto de calcinación denominado metacaolinita, muy utilizado como materia prima en la síntesis de zeolitas de bajo contenido en SiO(2), como por ejemplo las zeolitas del grupo de la faujasita NaA, NaX y NaY (Breck, 1974). Aunque la producción de zeolita A para detergencia a partir de la metacaolinita ha sido ampliamente descrita en numerosas patentes y trabajos de i...

  2. Las Zeolitas y su Aplicación en la Descontaminación de Efluentes Mineros Zeolites and their Application in the Decontamination of Mine Wastewater

    OpenAIRE

    Adilson Curi; Wilmer J. V Granda; Hernani M Lima; Wilson T Sousa

    2006-01-01

    En este artículo se presenta la génesis, la estructura y la clasificación de las zeolitas naturales. Se describen las propiedades más relevantes de las mismas, tales como porosidad, adsorción e intercambio iónico. Se revisan los usos de las zeolitas naturales en el tratamiento de efluentes conteniendo metales pesados según la literatura vigente. Dichos usos están enfocados hacia el tratamiento de efluentes minero-metalúrgicos y la contaminación por mercurio en actividades mineras informales. ...

  3. Caracterización de la zeolita natural de Palmarito de Cauto y su valoración como intercambiador iónico

    Directory of Open Access Journals (Sweden)

    Valduvina Córdova-Rodríguez

    2014-12-01

    Full Text Available El propósito fue evaluar la capacidad como intercambiador iónico de la zeolita natural de Palmarito de Cauto. La caracterización de la zeolita se realizó mediante análisis químico, roentgenográfico y térmico. Se obtuvo, además, la fórmula cristaloquímica del mineral considerando el volumen de la celda unitaria y la densidad de la zeolita, que indica que la mordenita posee características que le permiten extraer Cr(III y Cr(VI. La capacitad teórica de intercambio iónico (CCI se comprobó en la práctica con el residual de la empresa de fibrocemento de Santiago de Cuba, cuyas concentraciones de cromo superan las normas establecidas para su vertimiento al ecosistema costero. Se concluye que la zeolita de Palmarito de Cauto puede ser empleada para remover el cromo de residuales industriales y disminuir el pH de estos.

  4. Caracterización de la adsorcion de amonio y fosfato mediante zeolitas sintéticas modificadas

    OpenAIRE

    Cheng Cui, Yuanhao

    2015-01-01

    En el contexto legal actual se exige una eliminación del fósforo y nitrógeno casi completa en las aguas residuales. Por otro lado, conseguir recuperar estos nutrientes conllevaría beneficios tanto económicos como ecológicos ya que se cerraría el ciclo natural de estos dos elementos evitando su acumulación y previniendo la eutrofización en el medio acuático. El objetivo del presente proyecto es caracterizar el proceso de adsorción de amonio y fosfato mediante una zeolita sintetizada a parti...

  5. EMPLEO DE CATIONES FOSFONIO COMO AGENTES DIRECTORES DE ESTRUCTURA (ADEs) EN LA SÍNTESIS DE ZEOLITAS.

    OpenAIRE

    Hernández Rodríguez, Manuel

    2014-01-01

    DESARROLLO DE NUEVOS MATERIALES MICROPOROSOS QUE PUEDEN SER DE INTERÉS EN PROCESOS DE PETROLEOQUÍMICA Y QUÍMICA FINA, ASÍ COMO EN PROCESOS DE ADSORCIÓN Y SEPARACIÓN DE HIDROCARBUROS LIGEROS, TALES COMO HIDROCARBUROS LINEALES DE RAMIFICADOS O PARAFINAS DE OLEFINAS. EN CONCRETO SE PRETENDEN SINTETIZAR NUEVAS ZEOLITAS PURAMENTE SILÍCEAS O DE ALTA RELACIÓN Si/T(III) CON PROPIEDADES CATALÍTICAS Y DE ADSORCIÓN BIEN DEFINIDAS TANTO POR SU COMPOSICIÓN QUÍMICA COMO POR LA NATURALEZA Y DIMENSIONES D...

  6. Síntesis de Zeolitas del tipo ZSM y su utilización en la producción de Hidrocarburos aromáticos a partir de Metanol

    Directory of Open Access Journals (Sweden)

    Jorge Bonilla

    2009-10-01

    Full Text Available Se sintetizaron las zeolitas ZSM-5 H *, ZSM- 8H * y ZSM-11H * y se utilizaron como catalizadores en la conversión de metanol a hidrocarburos y agua. La zeolita ZSM-5 presentó los mejores rendimientos de conversión a productos de punto de ebullición similares a los de la gasolina y en su mayoría aromáticos.

  7. Eficiencia energética en la trituración por impactos en la planta de zeolitas de San Andrés (Holguín, Cuba

    Directory of Open Access Journals (Sweden)

    José Ramón Hechavarría-Pérez

    2015-01-01

    Full Text Available El presente trabajo tiene como objetivo la evaluación a escala industrial de la eficiencia energética de una trituradora de ma rtillos en la planta de zeolitas de San Andrés. Variando los niveles de las v ariables de operación (velocidad del rotor, cantidad de martill os y productividad del triturador, se r ealizaron dos series de ensa yos para determinar su influencia en la potencia consumida por el motor de la trituradora; y la influencia sobre energía específica en tritur ación. El modelo del experimento obtenido de la primera serie d e ensayos demostró la influencia de las variables de operación en la pote ncia consumida por el motor de la trituradora. La relación entr e la energía consumida en la trituración y pro ductividad y velocidad de la t rituradora mostró su fuerte infl uencia en los indicadores energ o-tecnológicos. El régimen más eficiente corre sponde a los niveles de 1100rpm d e velocidad del rotor, 2 martillos y 15 t/h de productividad.

  8. OBTENCIÓN DE LA ZEOLITA MCM-22 A TRAVÉS DE LA SÍNTESIS HIDROTERMAL UTILIZANDO DIFERENTES MÉTODOS

    Directory of Open Access Journals (Sweden)

    Antonielly dos S. Barbosa

    2012-01-01

    Full Text Available En este estudio se evaluaron diferentes metodologías en la preparación de la zeolita MCM-22. Estos materiales se caracterizaron por difracción de rayos X (DRX, microscopía electrónica de barrido (SEM y termogravimetría (TG. La preparación de la zeolita MCM-22 fracturó los hidrogeles con la siguiente composición molar: 0.511 SiO2: 0.039 NaOH: 0.024 Al2O3: 23.06 H2O (método A y 0.511 SiO2: 0.048 NaOH: 0.038 Al2O3: 23.06 H2O (método B. La obtención de la zeolita MCM-22 puede ser confirmada por los picos de difracción de rayos X que mostró la topología típica de las capas laminares intercaladas con moléculas orgánicas, como conductor de estructuras hexametilendiamina (HMI. Imágenes SEM mostraron que las zeolitas se componen de conjuntos de partículas esféricas e identifican un cambio en la morfología en función del método empleado. A través de los resultados se concluye que es posible sintetizar zeolita MCM-22 con los dos métodos (A y B.

  9. ZEOLITAS NaY INTERCAMBIADAS CON METALES DE TRANSICIÓN (Fe2+, Co2+, Mo2+, Mn2+ COMO CATALIZADORES PARA LA OXIDACIÓN DE LIMONENO

    Directory of Open Access Journals (Sweden)

    Nubia Quiroz Prada

    2010-08-01

    Full Text Available Se obtuvieron zeolitas NaMY (M = Fe2+, Co2+, Mn2+, Mo2+ y NaCoMoY, las cuales fueron caracterizadas por espectrometría de absorción atómica, difracción de rayos X y análisis termogravimétrico. Estas zeolitas se ensayaron como catalizadores en la oxidación de R-(+-limoneno por oxígeno molecular y yodosilbenceno. El análisis por cromatografía de gases de alta resolución reveló que los principales productos de oxidación fueron los 1,2-epóxilimonenos, en relación molar cis/trans = 2. Otros productos mayoritarios fueron la carvona y los isómeros geométricos del carveol, en relación cis/trans = 0.5. Como resultado del intercambio iónico, se obtuvieron concentraciones de alrededor de un ion de Fe2+, Mn2+, Co2+ o Mo2+ por celda unitaria en las zeolitas NaMY. Estas zeolitas exhibieron actividad catalítica en la oxidación del limoneno. Los iones Co2+ y Fe2+ mostraron la mayor actividad. Las zeolitas NaCoMoY también fueron buenos catalizadores de esta oxidación, pero no se observaron efectos significativos de cooperación entre los dos metales.

  10. Aplicación de la técnica de separación granulométrica por vía húmeda para determinar el origen del fe en zeolitas naturales

    Directory of Open Access Journals (Sweden)

    Abraham Mendoza Córdova

    2013-12-01

    Full Text Available Las zeolitas son un grupo de minerales considerados industriales ya que por sus características físicas y químicas tienen una aplicación muy amplia. La fórmula general de las zeolitas es la siguiente: Mx Dy (Alx+2y Sin-(x+2y O2n.mH2 O, donde M y D representan cationes intercambiables que pueden balancear la carga negativa de la molécula AlO2, dichos cationes generalmente son elementos alcalinos y alcalinotérreos como Na, K y Ca. Sin embargo, al revisar la composición química de algunas zeolitas estudiadas en Sonora y en otros lugares del mundo, llama la atención la presencia de fierro en una proporción muy similar a la de los elementos alcalinos y alcalinotérreos, normalmente representados por más del 1% (principalmente el Ca. Particularmente se experimentó con zeolitas del yacimiento de La Palma en Sonora, para probar que el Fierro presente en las zeolitas corresponde a una mezcla de minerales como magnetita y hematita, demostrando que no se encuentra formando parte de la estructura de la zeolita como catión intercambiable.

  11. Estimación de propiedades termodinámicas de silicatos. Construcción de diagramas de actividad de zeolitas

    Directory of Open Access Journals (Sweden)

    La Iglesia, A.

    1995-12-01

    Full Text Available In this paper we analyze the present methods of estimation of the thermodynamic properties of silicates with special emphasis on the free energy and enthalpy of zeolites. These data are not available in the literature, as these phases are chemically complexo The obtained values allow us to build the 10 following thermodynamic equilibrium diagrams: solubility of laumontite, chabazite, analcime, volcanic glass, zeolite A and zeolite X, and stability diagrams of chabazite-analcime-phillipsite-volcanic glass, clinoptilolite-phillipsite-erionite, prehnite-laumontite-heulandite, and kaolinite-metakaolinhidrosodalite-zeolite A. These diagrams can be useful to understand the genesis of these minerals and the processes that allow their formation in the laboratory.En este artículo se pasa revista a los métodos actuales de estimación de propiedades termodinámicas de silicatos, haciendo especial énfasis a los dedicados a la estimación de la energía libre de formación y de la entalpía de zeolitas, datos poco disponibles en la bibliografía debido a la complejidad química de estas fases. Los valores obtenidos han permitido construir los 10 diagramas de equilibrio termodinámico siguientes: diagramas de solubilidad de laumontita, chabazita, analcima, vidrio volcánico, zeolita A y zeolita X y los de estabilidad de chabazita-analcima-philipsitavidrio volcánico, clinoptilolita-philipsita-erionita, prehnita-laumontita-heulandita y caolinita-metacaolinita-hidrosodalita-zeolita A. Estos diagramas pueden explicar la génesis de los minerales o los procesos que dan lugar a su síntesis en el laboratorio.

  12. Evaluación de la zeolita como soporte sólido para la formulación del biofertilizante Azospirillum

    OpenAIRE

    Dayamí Borges-Rodríguez; Ana Nelis San Juan-Rodríguez; Angela O. Díaz-LLanes; Eulalia Gómez-Santiesteban; Raúl Hernández-Sanchez

    2012-01-01

    Se realizó una caracterización física de la zeolita proveniente de los yacimientos de San Juan de la Yeras, con el objetivo de evaluar sus posibilidades para ser usada como soporte sólido en la formulación del biofertilizante Azospirillum. Se evaluaron fracciones de tres tamaños de partícula, de las que la fracción Zoac (

  13. Las zeolitas de los basaltos del Grupo Volcánico Isla James Ross, en las proximidades de Punta Santa Rita, isla James Ross, Antártida

    Directory of Open Access Journals (Sweden)

    Teresita Montenegro

    2013-12-01

    Full Text Available En la isla James Ross, al noreste de la península Antártica, afloran sedimentitas cretácicas y las suprayacen los basaltos del Grupo Volcánico Isla James Ross. Éstos se caracterizan por diferentes coladas emplazadas en ambientes marino subácueo, subglacial, y subaéreo. Las coladas emplazadas en ambiente subácueo originan hialoclastitas. En Punta Santa Rita (64°13'52''LS y 57°16'10''LO, situada al sureste de Punta Ekelöf, algunos niveles de basaltos subaéreos poseen estructura amigdaloide, con cavidades de tamaño variable entre 0,3 mm y 1 cm, rellenas con zeolitas y calcita. Los minerales que componen el relleno de las cavidades han sido estudiados con técnicas petrográficas convencionales, microscopía electrónica de barrido, EDS y difracción de rayos x. Todas las zeolitas están enriquecidas en Na. Un intercrecimiento de chabazita-gmelinita, tapiza las paredes de las cavidades, acompañadas por analcima, thomsonita, phillipsita, y calcita hacia el centro, mineral que también se presenta en venillas. El vidrio palagonítico se localiza en las superficies libres y químicamente también está enriquecido en Na, además de Al, K y Ca. Las asociaciones de zeolitas se habrían originado por reacción con aguas superficiales durante el enfriamiento inicial de los flujos de lavas y por recristalización de vidrio. Los basaltos habrían estado expuestos a la acción de fluidos de origen marino, evidenciado por la abundancia de Na hallada en todas las zeolitas y en la palagonita.

  14. Computer Assisted Learning (CAL) durch Berechnungsexperimente

    OpenAIRE

    Grob, Heinz Lothar (Ed.)

    1994-01-01

    Im Mittelpunkt von Computer Assisted Learning (CAL) steht der Arbeitsplatz eines Studierenden. Durch gezielte DV-Unterstützung soll der Studierende von Routinetätigkeiten entlastet und dazu ermuntert werden, sich vertieft auf theoretisches Neuland zu begeben. Das Spektrum der CAL-Varianten reicht dabei von einfachen Multiple-Choice-Programmen bis zu Multi-User-Produkten wie Planspielen. Realisierte Anwendungsgebiete aus dem wirtschaftswissenschaftlichen Bereich sind beispielsweise Teile der P...

  15. Empleo de la zeolita natural como complemento del abonado orgánico en el cultivo de hortalizas en sustratos de organopónicos.

    Directory of Open Access Journals (Sweden)

    Pável Chaveli Chávez

    2013-01-01

    Full Text Available RESUMEN Se estudia el comportamiento de los rendimientos agrícolas a la aplicación de zeolita en organopónicos. La investigación se desarrolló en varias unidades del municipio Camagüey, donde se aplicaron diferentes granulometrías de zeolita. Los resultados mostraron que la utilización de la zeolita natural, como complemento del abonado orgánico, resulta una adecuada variante para la obtención de buenos rendimientos en sistemas de organopónicos. Use of natural zeolite suplements as organic supply for vegetable growing in organoponic substrates. ABSTRACT. The performance of agricultural yields to the application of zeolite in organopónicos is studied. The research was conducted in several units of the municipality of Camagüey, where different particle sizes of zeolite were applied. The results showed that the use of natural zeolite as a complement to organic manure, is a suitable alternative for obtaining good yields organopónicos systems.

  16. NotCal04 - Comparison / Calibration 14C records 26-50 cal kBP

    Energy Technology Data Exchange (ETDEWEB)

    der Plicht, J v; Beck, J; Bard, E; Baille, M

    2004-11-11

    The radiocarbon calibration curve, IntCal04, extends back to 26 cal kBP. While several high resolution records exist beyond this limit, these data sets exhibit discrepancies one to another of up to several millennia. As a result, no calibration curve for the time range 26-50 cal kBP can be recommended as yet, but in this paper the IntCal04 working group compares the available data sets and offers a discussion of the information that they hold.

  17. Developmental evolution of flowering plant pollen tube cell walls: callose synthase (CalS gene expression patterns

    Directory of Open Access Journals (Sweden)

    Abercrombie Jason M

    2011-07-01

    Full Text Available Abstract Background A number of innovations underlie the origin of rapid reproductive cycles in angiosperms. A critical early step involved the modification of an ancestrally short and slow-growing pollen tube for faster and longer distance transport of sperm to egg. Associated with this shift are the predominantly callose (1,3-β-glucan walls and septae (callose plugs of angiosperm pollen tubes. Callose synthesis is mediated by callose synthase (CalS. Of 12 CalS gene family members in Arabidopsis, only one (CalS5 has been directly linked to pollen tube callose. CalS5 orthologues are present in several monocot and eudicot genomes, but little is known about the evolutionary origin of CalS5 or what its ancestral function may have been. Results We investigated expression of CalS in pollen and pollen tubes of selected non-flowering seed plants (gymnosperms and angiosperms within lineages that diverged below the monocot/eudicot node. First, we determined the nearly full length coding sequence of a CalS5 orthologue from Cabomba caroliniana (CcCalS5 (Nymphaeales. Semi-quantitative RT-PCR demonstrated low CcCalS5 expression within several vegetative tissues, but strong expression in mature pollen. CalS transcripts were detected in pollen tubes of several species within Nymphaeales and Austrobaileyales, and comparative analyses with a phylogenetically diverse group of sequenced genomes indicated homology to CalS5. We also report in silico evidence of a putative CalS5 orthologue from Amborella. Among gymnosperms, CalS5 transcripts were recovered from germinating pollen of Gnetum and Ginkgo, but a novel CalS paralog was instead amplified from germinating pollen of Pinus taeda. Conclusion The finding that CalS5 is the predominant callose synthase in pollen tubes of both early-diverging and model system angiosperms is an indicator of the homology of their novel callosic pollen tube walls and callose plugs. The data suggest that CalS5 had transient expression

  18. Efecto antiinflamatorio preclínico del polvo seco de Caléndula officinalis

    OpenAIRE

    Núñez Figueredo, Yanier; Montero Alarcón, Claudia; Agüero Fernández, Sara; Muñoz Cernuda, Adriana

    2007-01-01

    Para demostrar la actividad antiinflamatoria del polvo seco Caléndula officinalis secado por atomización se emplearon dosis de 50, 150 y 450 mg/Kg y se evaluó el efecto sobre la inflamación aguda provocada por carragenina, dextrán, histamina y serotonina y granuloma inducido por discos de algodón en ratas y edema auricular inducido por aceite de crotón en ratones. El polvo seco mostró efecto inhibitorio sobre los diferentes modelos empleados sin afectar el peso del timo y las glándulas suprar...

  19. A Simple Acronym for Doing Calculus: CAL

    Science.gov (United States)

    Hathaway, Richard J.

    2008-01-01

    An acronym is presented that provides students a potentially useful, unifying view of the major topics covered in an elementary calculus sequence. The acronym (CAL) is based on viewing the calculus procedure for solving a calculus problem P* in three steps: (1) recognizing that the problem cannot be solved using simple (non-calculus) techniques;…

  20. CALS - What are the Potentials for SMEs ?

    DEFF Research Database (Denmark)

    Bilberg, Arne; Larsen, Michael holm; Langer, Gilad;

    1996-01-01

    is to demonstrate the potentials for improving business processes by effective information management. The three companies involved will demonstrate practical and innovative applications of CALS solutions, that will serve as examples for a wide variety of SMEs.The paper will focus on the industrial results...

  1. Las Zeolitas y su Aplicación en la Descontaminación de Efluentes Mineros Zeolites and their Application in the Decontamination of Mine Wastewater

    Directory of Open Access Journals (Sweden)

    Adilson Curi

    2006-01-01

    Full Text Available En este artículo se presenta la génesis, la estructura y la clasificación de las zeolitas naturales. Se describen las propiedades más relevantes de las mismas, tales como porosidad, adsorción e intercambio iónico. Se revisan los usos de las zeolitas naturales en el tratamiento de efluentes conteniendo metales pesados según la literatura vigente. Dichos usos están enfocados hacia el tratamiento de efluentes minero-metalúrgicos y la contaminación por mercurio en actividades mineras informales. El estudio muestra que las zeolitas naturales son eficientes en la remoción de metales pesados en efluentes minero metalúrgicos, pueden ser producidas y beneficiadas a bajo costo, y pueden ser usadas también para la adsorción de vapores de mercurio en hornos de copelas quemadores de amalgama.This paper describes the genesis, structure and classification of natural zeolites, including their most relevant properties such as porosity, adsorption and ionic exchange. The use of natural zeolites in the treatment of effluents containing heavy metals is reviewed based on current literature. These uses are focused on mineral-metallurgical effluents and mercury pollution related to artisan mining activities. The study shows that natural zeolites are efficient in removal of heavy metals in metal mining effluents, can be produced and improved at a low cost, and can also be used to adsorb mercury vapors from ovens used to fire amalgams.

  2. MODIFICACIONES DE LAS PROPIEDADES TEXTURALES Y ESTRUCTURALES DE UNA ZEOLITA USY Y DE SUS MEZCLAS CON "CAOLÍN CLAY" Y CLORHIDROL COMO CONSECUENCIA DEL TRATAMIENTO HIDROTÉRMICO

    Directory of Open Access Journals (Sweden)

    Yazmin Yaneth Agamez Pertuz

    2008-03-01

    Full Text Available El catalizador de FCC está constituido por partículas de composición compleja donde el componente activo es una zeolita Y. En este trabajo se presentan los resultados texturales y estructurales de una zeolita USY comercial lixiviada, de una serie de catalizadores con 7, 15, 25, 35 y 45% de material activo y los de estos materiales desactivados hidrotérmicamente. Las muestras se caracterizaron por fluorescencia de rayos X (FRX, difracción de rayos X (DRX, resonancia magnética nuclear de silicio (29Si RMN y fisiadsorción de nitrógeno a 77 K. A partir de estos resultados se hallaron correlaciones entre el volumen de microporo y el contenido de zeolita y entre el grado de cristalinidad y el porcentaje de zeolita. Además, se encontró que un tratamiento con sólo 20% de vapor de agua a 1033 K durante 16 horas destruye los grupos estructurales Si(2Al y Si(3Al como reflejo de la dealuminización drástica que sufre el material. 

  3. Key Factors Affecting Conceptual Gains from CAL Materials.

    Science.gov (United States)

    Watson, Barbara

    2001-01-01

    Identifies key factors affecting conceptual gains from using a CAL (computer-assisted learning) package and their application to a college practical laboratory class. Considers students' biographical characteristics, design features of the CAL package, and the way that the CAL was integrated into the curriculum. (Author/LRW)

  4. Nonlinear waves in $\\cal PT$-symmetric systems

    CERN Document Server

    Konotop, Vladimir V; Zezyulin, Dmitry A

    2016-01-01

    Recent progress on nonlinear properties of parity-time ($\\cal PT$-) symmetric systems is comprehensively reviewed in this article. $\\cal PT$ symmetry started out in non-Hermitian quantum mechanics, where complex potentials obeying $\\cal PT$ symmetry could exhibit all-real spectra. This concept later spread out to optics, Bose-Einstein condensates, electronic circuits, and many other physical fields, where a judicious balancing of gain and loss constitutes a $\\cal PT$-symmetric system. The natural inclusion of nonlinearity into these $\\cal PT$ systems then gave rise to a wide array of new phenomena which have no counterparts in traditional dissipative systems. Examples include the existence of continuous families of nonlinear modes and integrals of motion, stabilization of nonlinear modes above $\\cal PT$-symmetry phase transition, symmetry breaking of nonlinear modes, distinctive soliton dynamics, and many others. In this article, nonlinear $\\cal PT$-symmetric systems arising from various physical disciplines ...

  5. Simulación físico-matemática del secado de la zeolita con microondas. // Physical-mathematical simulation of the zeolite drying with microwaves.

    Directory of Open Access Journals (Sweden)

    G. Quesada Ramos

    2004-01-01

    Full Text Available Se realiza una simulación físico-matemática del secado de la zeolita sometida a radiaciones de microondas utilizando la leyde Lambert. Las ecuaciones se expresan en un esquema implícito unidimensional, y se emplea el método numérico dediferencias finitas. La solución del sistema de ecuaciones se realiza por medio del método iterativo de Gauss-Seidel. Losresultados teóricos se comparan con los obtenidos experimentalmente.Palabras claves: Simulación, secado, zeolita, microondas._______________________________________________________________________________AbstractA physical-mathematical simulation of the zeolite drying with microwaves using the Lambert`s law is made. The equationsare expressed in an unidimensional implicit scheme, and the finite differences numeric method is used. The solution of theequations system is carried out by using the Gauss-Seidel´s iterativ method. The theoretical results are compared with thoseexperimentally obtained.Key words: Physical-mathematical simulation, drying, zeolite, microwaves.

  6. 2006 National Caring Awards. Cal Ripken Jr.

    Science.gov (United States)

    2006-11-01

    You can tell a lot about baseball legend Cal Ripken from his office in Baltimore. It's full of mahogany furniture that bespeaks his new role as businessman and philanthropist. Books are piled on the windowsill. Above the sofa are two pictures, one of the All-Century players--he and Ernie Banks are the only shortstops--and another of himself in 1995 after he broke Lou Gehrig's record for consecutive games played. Looming above it all is a huge pencil drawing of Mr. Ripken's dad, the person who shaped him as a player and a man. PMID:17153680

  7. DOSAR/CalLab Operations Manual

    Energy Technology Data Exchange (ETDEWEB)

    Bogard, J.S.

    2000-03-01

    The Life Sciences Division (LSD) of Oak Ridge National Laboratory (ORNL) has a long record of radiation dosimetry research, primarily using the Health Physics Research Reactor (HPRR) and the Dosimetry Applications Research (DOSAR) Program Calibration Laboratory (CalLab), referred to formerly as the Radiation Calibration Laboratory. These facilities have been used by a broad segment of the research community to perform a variety of experiments in areas including, but not limited to, radiobiology, radiation dosimeter and instrumentation development and calibration, and the testing of materials in a variety of radiation environments.

  8. A influência do uso acumulado de calçados de corrida sobre a força de reação do solo e as respostas de pressão plantar The influence of running shoes cumulative usage on the ground reaction forces and plantar pressure responses

    Directory of Open Access Journals (Sweden)

    Roberto Bianco

    2011-12-01

    Full Text Available Acredita-se que a eficiência do calçado seja afetada pelo uso prolongado, mas as alterações biomecânicas ainda não estão bem compreendidas. O objetivo deste estudo é analisar a influência do uso de calçados de corrida na força de reação do solo e os parâmetros de pressão plantar. Três corredores do sexo masculino receberam quatro calçados de corrida para usarem em suas sessões de treinamento. O Sistema Gaitway e o Sistema de F-scan foram usados para registrar a força de reação do solo e parâmetros pressão plantar em diferentes regiões do pé. As coletas ocorreram em quatro momentos: novo e 100, 200 e 300 km de uso. O primeiro pico diminuiu da condição novo para os 300 km de uso (p The prolonged use of a running shoe is thought to affect the efficiency of its impact attenuation properties. However, its effect over biomechanical variables has yet not been well understood. The aim of this study was to examine the influence of running shoe usage on ground reaction force and plantar pressure parameters. Three male runners received four running shoes each to use at their training sessions. The Gaitway System was used to register the vertical component of the ground reaction force, whereas the contact area and peak plantar pressure at different regions of the foot were assessed via the the F-scan System. Data collection occurred at baseline (when the shoes were new - New and after 100, 200 and 300km of use. The first peak decreased significantly from New to 300km (p < 0.01 and the loading rate showed a significant decrease at 200km in relation to the New condition (p < 0.01. Total area increased significantly from New to 100km (p < 0.01 of use and maintained a similar value when compared with the other conditions. There was a continuous and significant decrease (p < 0.01 on forefoot peak pressure as the mileage increased from New to 300km. The hallux peak pressure values were significantly smaller (p < 0.01 at 300km when

  9. Scheduling of CAL actor networks based on dynamic code analysis

    OpenAIRE

    Boutellier, Jani; Silven, Olli; Raulet, Mickaël

    2011-01-01

    International audience CAL is a dataflow oriented language for writing high-level specifications of signal processing applications. The language has recently been standardized and selected for the new MPEG Reconfigurable Video Coding standard. Application specifications written in CAL can be transformed into executable implementations through development tools. Unfortunately, the present tools provide no way to schedule the CAL entities efficiently at run-time. This paper proposes an autom...

  10. Cal Council at Seventy: Past, Present, and Future

    Science.gov (United States)

    Cantor, James S.

    2015-01-01

    James Cantor, a professor in the College of Education at California State University, describes his history with the California Council on Teacher Education (CCTE or Cal Council) before becoming the President of the CCTE in 2008. He served as an active member for 10 years prior to becoming the Cal Council President. The author shares the…

  11. Engineering Students' Use of Computer Assisted Learning (CAL)

    Science.gov (United States)

    Huczynski, Andrzej; Johnston, Scott Paul

    2005-01-01

    This study examines the use of Computer Assisted Learning (CAL) by undergraduate engineering students studying a business and management course. Discussing both the relationship between management and engineering and CAL applied to engineering education, this study is based on a survey of 82 undergraduates and adopts a quantitative research…

  12. An Interaction of Screen Colour and Lesson Task in CAL

    Science.gov (United States)

    Clariana, Roy B.

    2004-01-01

    Colour is a common feature in computer-aided learning (CAL), though the instructional effects of screen colour are not well understood. This investigation considers the effects of different CAL study tasks with feedback on posttest performance and on posttest memory of the lesson colour scheme. Graduate students (n=68) completed a computer-based…

  13. Finished Genome Sequence of Collimonas arenae Cal35

    NARCIS (Netherlands)

    Wu, Je-Jia; de Jager, Victor; Deng, Wen-ling; Leveau, Johan

    2015-01-01

    We announce the finished genome sequence of soil forest isolate Collimonas arenae Cal35, which comprises a 5.6-Mbp chromosome and 41-kb plasmid. The Cal35 genome is the second one published for the bacterial genus Collimonas and represents the first opportunity for high-resolution comparison of geno

  14. Evaluación de la zeolita como soporte sólido para la formulación del biofertilizante Azospirillum

    Directory of Open Access Journals (Sweden)

    Dayamí Borges-Rodríguez

    2012-01-01

    Full Text Available Se realizó una caracterización física de la zeolita proveniente de los yacimientos de San Juan de la Yeras, con el objetivo de evaluar sus posibilidades para ser usada como soporte sólido en la formulación del biofertilizante Azospirillum. Se evaluaron fracciones de tres tamaños de partícula, de las que la fracción Zoac (<0,8 mm fue la más apropiada de acuerdo con sus características y disponibilidad. Se realizaron experimentos mediante un diseño factorial 22 para evaluar la estabilidad del inoculante formulado en soporte sólido, teniendo en cuenta dos niveles de relación de inoculación y concentración celular del producto. De acuerdo con los resultados obtenidos, el producto líquido no puede ser almacenado a temperatura ambiente por un período superior a 14 días, mientras que la zeolita provee al microorganismo de un ambiente adecuado para su mantenimiento por un período de 90 días. La inoculación más efectiva resultó ser la realizada al 21 % con una titulación del producto al salir del fermentador de 1 x 109 UFC/ml para una tasa de extinción celular de 1,4 x 106 cel/ml-1/día-1. La poca cantidad de inóculo líquido que es capaz de admitir este material y su bajo contenido de materia orgánica constituyen desventajas que debe ser consideradas para el establecimiento de una formulación definitiva del biofertilizante.

  15. Hidrólise da cana-de-açúcar com cal virgem ou cal hidratada Hydrolysis of cane sugar with lime or hydrated lime

    Directory of Open Access Journals (Sweden)

    Diego Azevedo Mota

    2010-06-01

    Full Text Available Objetivou-se estudar o efeito do tratamento alcalino da cana-de-açúcar com cal virgem ou cal hidratada sobre a composição bromatológica e a digestibilidade in vitro da matéria seca, da fibra em detergente neutro e da fibra em detergente ácido. Utilizou-se um delineamento inteiramente casualizado em esquema fatorial 3 × 3, composto de três formas de processamento da cana (in natura; cana hidrolisada com 0,5% de cal virgem; e cana hidrolisada com 0,5% de cal hidratada e três tempos de armazenamento (12, 36 e 60 horas. As formas de processamento influenciaram os teores de matéria orgânica, matéria mineral, carboidratos totais e hemicelulose, assim como os teores de fibra em detergente neutro e nutrientes digestíveis totais. Os tempos de armazenamento influenciaram os teores de proteína bruta, matéria orgânica, carboidratos totais e hemicelulose. Entre os minerais, somente o teor de cálcio teve aumento com a inclusão de ambos os tipos de cal em relação à cana-de-açúcar, que não sofreu o processo de hidrólise. Os coeficientes de digestibilidade da matéria seca e da fibra em detergente neutro aumentaram com a hidrólise da cana em comparação à cana in natura. A hidrólise com cal hidratada ou com cal virgem mantém o valor nutricional da cana-de-açúcar, permitindo que possa ser utilizada depois de até 60 horas de armazenamento.The objective of the present work was to evaluate the effect of the alkaline treatment of sugarcane with virgin lime or hydrated lime on the bromatologic composition and in vitro digestibility of dry matter, neutral detergent fiber, and acid detergent fiber. It was used a complete random design with a 3 × 3 factorial scheme composed by three forms of of sugarcane processing (in natura sugarcane; hydrolyzed sugarcane with 0.5% virgin lime; and hydrolyzed sugarcane with 0.5% hydrated lime and three storage times (12, 36 and 60 hours. The forms of processing changed the contents of organic matter

  16. Uso da adubação orgânica e cobertura morta na cultura da calêndula (Calendula officinalis L.).

    OpenAIRE

    C.B.O. Araújo; Santos, A. M.; L. A. Fernandes; Martins, E. R.; R.A. Sampaio; Costa, C. A.; G.L.D. Leite

    2009-01-01

    A calêndula representa fonte alternativa econômica principalmente para a agricultura familiar. O objetivo do presente trabalho foi avaliar os efeitos da adubação orgânica e do uso da cobertura morta sobre a produção de biomassa e teor de flavonóides totais em plantas de calêndula. O experimento foi realizado no Campus de Montes Claros da Universidade Federal de Minas Gerais, utilizando-se o delineamento em blocos casualizados em esquema fatorial 2x2x4 com quatro repetições: duas épocas de col...

  17. Estudio cronológico de la evolución de los estucos de cal en la ciudad de Barcelona

    OpenAIRE

    Méndez Pendavis, Edith

    2010-01-01

    El objetivo de este proyecto es el Estudio cronológico de la evolución de los Estucos de Cal en la Ciudad de Barcelona. Barcelona es una ciudad donde los estucos de cal están muy presentes en sus fachadas, actualmente no se conoce que exista mucha documentación sobre este tema así que mediante este trabajo se intenta conocer más profundamente esta técnica de revestimiento de fachadas centrado principalmente en Barcelona. A partir de la poca información que he podido recopila...

  18. Minimal $\\cal N=4$ topologically massive supergravity

    CERN Document Server

    Kuzenko, Sergei M; Sachs, Ivo

    2016-01-01

    Using the superconformal framework, we construct a new off-shell model for topologically massive $\\cal N=4$ supergravity which is minimal in the sense that it makes use of a single compensating vector multiplet. Our theory provides a counterexample to the common lore that two compensating multiplets are required within the conformal approach to supergravity with eight supercharges in diverse dimensions. All solutions in this theory correspond to non-conformally flat superspaces. Its maximally supersymmetric solutions include the so-called critical (4,0) anti-de Sitter superspace introduced in arXiv:1205.4622. Other maximally supersymmetric solutions describe warped critical (4,0) anti-de Sitter superspaces. We also propose a dual formulation for the theory in which the vector multiplet is replaced with an off-shell hypermultiplet. Upon elimination of the auxiliary fields belonging to the hypermultiplet and imposing certain gauge conditions, the dual action reduces to the one introduced in arXiv:1605.00103.

  19. Avaliação da capacidade dessecante de duas zeolitas obtidas da modificação hidrotérmica de um caulim vermelho do Ceará, Brasil Evaluation of desiccant capacity of two zeolites obtained from hydrothermal modification of a red kaolin from Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    J. H. S Girão

    2002-12-01

    Full Text Available As zeolitas P e phillipsita obtidas previamente, a partir de reações hidrotérmicas em meio alcalino de um caulim vermelho do Ceará, foram submetidas a avaliações quanto à capacidade dessecante aplicadas ao solvente acetato de etila contendo quantidades de água que variam de 0,1 a 1%v/v. Os resultados mostram que ambas zeolitas apresentam boa capacidade dessecante, tendo a phillipsita alcançado um desempenho notadamente superior ao da zeolita P.The zeolites P e phillipsite previously obtained from hydrothermal reactions in alkaline media of a red kaolin from Ceará, Brazil, were evaluated taking into account the desiccant capacity in ethyl acetate solvents with water in the 0.1-1%vol. range The results show that both zeolites presented good desiccant capacity, with phillipsite having superior performance.

  20. CALS - what are the potentials for SME’s ?

    DEFF Research Database (Denmark)

    Bilberg, Arne; Thomsen, Finn Tang; Larsen, Michael Holm;

    1997-01-01

    the potentials for improvingbusiness processes by effective information management. The threecompanies involved will demonstrate practical and innovativeapplications of CALS solutions, that will serve as examples for awide variety of SMEs. The paper will focus on the industrial results and the CALSengineering......The DanishCALS Center initiative, aims at making CALS operational in Danish industry. The centerconsists of three Danish companies, Bang & Olufsen, Odense Steel Shipyard, Nilfiskbesides from the Technical University of Denmark and the Danish Technological Institute.The objective is to demonstrate...

  1. El Uso de cal para salvar muros de fortificaciones como un legado de la Arquitectura Militar de la Colonia

    Directory of Open Access Journals (Sweden)

    Walter Domínguez Vega

    2009-01-01

    Full Text Available Se aborda el uso de la cal en la restauración y conservación de las fortificaciones de la línea defensiva Holguin ¿Gibara. Se basa en la tendencia actual para la conservación sostenible de los bienes patrimoniales y culturales que orienta los materiales utilizados en los trabajos de intervención, se detiene sobre la relevancia y alcance histórico cultural del patrimonio fortificado en la provincia de Holguín, describe las características constructivas de sus muros, los morteros utilizados y las dificultades para la conservación de estas. Propone que se revitalice el uso de la cal en obras de conservación.

  2. CalCOFI Larvae Counts, Scientific Names SD to SI

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Fish larvae counts and standardized counts for larvae captured in CalCOFI icthyoplankton nets (primarily vertical [Calvet or Pairovet], oblique [bongo or ring...

  3. CalCOFI Larvae Counts, Scientific Names SB to SC

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Fish larvae counts and standardized counts for larvae captured in CalCOFI icthyoplankton nets (primarily vertical [Calvet or Pairovet], oblique [bongo or ring...

  4. CalCOFI Larvae Counts, Scientific Names C to CE

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Fish larvae counts and standardized counts for larvae captured in CalCOFI icthyoplankton nets (primarily vertical [Calvet or Pairovet], oblique [bongo or ring...

  5. CalCOFI Larvae Counts, Scientific Names CI to CO

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Fish larvae counts and standardized counts for larvae captured in CalCOFI icthyoplankton nets (primarily vertical [Calvet or Pairovet], oblique [bongo or ring...

  6. California Cooperative Oceanic Fisheries Investigations (CalCOFI)Database

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This database contains icthyoplankton data collected as part of the California Cooperative Oceanic Fisheries Investigations (CalCOFI) program and other cruises...

  7. Efeito da maturação gonadal sobre o conteúdo calórico e condição geral de peixes da planície de inundação do alto rio Paraná - DOI: 10.4025/actascibiolsci.v26i2.1635 Effect of gonadal maturation on the caloric content and general condition of fish from the upper Paraná river floodplain - DOI: 10.4025/actascibiolsci.v26i2.1635

    Directory of Open Access Journals (Sweden)

    Anna Christina Esper Amaro de Faria

    2004-04-01

    Full Text Available Com o intuito de investigar a alocação de energia e a correlação entre esta e o fator de condição (K de peixes da planície de inundação do alto rio Paraná (22º43’S; 53º32’W, foram selecionadas as espécies Serrasalmus marginatus (piscívora, Loricariichthys Platymetopon (detritívora, Leporinus friderici (onívora-herbívora e Parauchenipterus galeatus (onívora-insetívora. As coletas foram realizadas em novembro/2002, março e setembro/2003. As amostras de músculos de indivíduos de ambos os sexos pertencentes a diferentes estádios de maturação gonadal tiveram seu conteúdo calórico determinado em bomba calorimétrica e os resultados comparados com o K. Diferenças significativas foram encontradas entre os sexos e estádios de maturação. A espécie detritívora posicionou-se entre as onívoras e apiscívora quanto ao conteúdo calórico e não foram identificadas diferenças entre as onívoras. A maturação gonadal exerceu efeito sobre a alocação de energia e o K, enquanto este último não se correlacionou com a energia armazenada nos músculosAiming to investigate the energy allocation and the correlation between it and the condition factor (K of fish from the Upper Paraná River floodplain (22º43'S; 53º2'W, the following species were selected: Serrasalmus marginatus (piscivorous, Loricariichthys platymetopon (detritivorous, Leporinus friderici (omnivorous-herbivorous and Parauchenipterus galeatus (omnivorous-insectivorous. The collections were carried out in November/2002 and March and September/2003. The muscle samples of individuals from both sexes, belonging to different stages of gonadal maturation had their caloric content determined in a calorimetric pump and the results compared with K. Significant differences were found between the sexes and maturation stages. The detritivorous species was positioned between the omnivor and piscivor regarding the caloric content. Differences among the omnivorous were not

  8. Accelerating universe in $f({\\cal R})$ brane gravity

    OpenAIRE

    Atazadeh, K.; Farhoudi, M.; Sepangi, H. R.

    2008-01-01

    We study a 5-dimensional $f({\\cal R})$ brane gravity within the framework of scalar-tensor type theories. We show that such a model predicts, for a certain choice of $f({\\cal R})$ and a spatially flat universe, an exponential potential, leading to an accelerated expanding universe driven solely by the curvature of the bulk space. This result is consistent with the observational data in the cosmological scale.

  9. Building the 'JMMC Stellar Diameters Catalog' using SearchCal

    OpenAIRE

    Lafrasse, Sylvain; Mella, Guillaume; Bonneau, Daniel; Duvert, Gilles; Delfosse, Xavier; Chesneau, Olivier; Chelli, Alain

    2010-01-01

    11 pages, to be published in SPIE'2010 conference on "Optical and Infrared Interferometry II" The JMMC Calibrator Workgroup has long developed methods to ascertain the angular diameter of stars, and provides this expertise in the SearchCal software. SearchCal dynamically finds calibrators near science objects by querying CDS hosted catalogs according to observational parameters. Initially limited to bright objects (K magnitude ≤ 5.5), it has been upgraded with a new method providing calibr...

  10. Tratamiento oral del síndrome diarreico en terneros con zeolita natural (Oral treatment of the diarrhea syndrome in calves with natural zeolite

    Directory of Open Access Journals (Sweden)

    Mario Cuesta Mazorra

    2007-03-01

    Full Text Available Se evaluó la eficacia de la zeolita natural en el tratamiento del síndrome diarreico en terneros. La evaluación se realizó en unestudio controlado, aleatorizado y multicéntrico. La hipótesis de trabajo contempló que la terapia experimental sería equivalente a la del control con polvo antidiarreico, formulado comercial utilizado comúnmente en Cuba para el tratamiento de esta entidad. Se incluyeronen el ensayo 120 terneros de ambos sexos, mestizos Holstein x Cebú, de edades entre 1 a 90 días, por lo que el universo de estudio omprendió animales pertenecientes a grandes unidades (vaquerías y recrías de cinco empresas pecuarias de la provincia de Villa Clara,sometidos a sistema intensivo de explotación y manejo. Los ratamientosestudio y control fueron administrados oralmente con una frecuencia de dos veces al día, preferiblemente en la mañana y en la tarde durante 5 días como máximo, al cabo de los cuales se efectuóla evaluación clínica final y se indicó el estudio de laboratorio final 5 días después de finalizar el tratamiento. En las condiciones del ensayo la zeolita natural tuvo una eficacia del 68,3%, menor a lagrupo control (96,7% con diferencias significativas (p < 0,05. Sin embargo, un balance del costo-beneficio permite recomendar la utilización de la zeolita natural como una buena alternativa en eltratamiento de estos procesos. The effectiveness of the natural zeolite in the treatment of the diarrhea syndrome in calves was evaluated. The evaluation wascarried out in a controlled, randomized and multicentric study. The working hypothesis contemplated that the experimental therapy would be equivalent to that of the control with powder astringent formulated commercial utilized commonly in Cuba for the treatment ofthis entity. In the assay were included 120 calves of both sexes, crossbreed Holstein x Zebu, of ages between 1 to 90 days, forwhat the universe of study understood animals belonging to big units (dairies and

  11. IntCal13 and Marine13 Radiocarbon Age Calibration Curves 0–50,000 Years cal BP

    OpenAIRE

    Bard, Edouard; Bayliss, Alex; Beck, J. Warren; Blackwell, Paul G.; Bronk Ramsey, Christopher; Caitlin E. Buck; Cheng, Hai; Edwards, R. Lawrence; Friedrich, Michael; Grootes, Pieter M; Guilderson, Thomas P; Haflidason, Haflidi; Hajdas, Irka; Hatté, Christine; Heaton, Timothy J.

    2013-01-01

    The IntCal09 and Marine09 radiocarbon calibration curves have been revised utilizing newly available and updated data sets from C-14 measurements on tree rings, plant macrofossils, speleothems, corals, and foraminifera. The calibration curves were derived from the data using the random walk model (RWM) used to generate IntCal09 and Marine09, which has been revised to account for additional uncertainties and error structures. The new curves were ratified at the 21st International Radiocarbon c...

  12. A PROPOSITO DE UN ENSAYO CON ABONOS (cal y harina de huesos EN ALFALFAl (Medicago sativai

    Directory of Open Access Journals (Sweden)

    Isidoro Mogilner

    2010-11-01

    Full Text Available

    En este trabajo, los autores estudian el efecto que sobre el rendimiento de la alfalfa (Medicago sativa produce la incorporación de diferentes dosis de cal y harina de huesos, en un suelo pobre de P y Ca; de una textura pesada con alto contenido de arcilla en todos los horizontes, de un pH ácido (5.1 a 6.2 y que es característico de la zona donde fué hecha la experiencia.
    Se han obtenido resultados referentes a la influencia de la inoculación de la semilla con Rhizobium y el agregado de cal y harina de huesos sobre los rendimientos.

  13. The Column Density Variance-{\\cal M}_s Relationship

    Science.gov (United States)

    Burkhart, Blakesley; Lazarian, A.

    2012-08-01

    Although there is a wealth of column density tracers for both the molecular and diffuse interstellar medium, there are few observational studies investigating the relationship between the density variance (σ2) and the sonic Mach number ({\\cal M}_s). This is in part due to the fact that the σ2-{\\cal M}_s relationship is derived, via MHD simulations, for the three-dimensional (3D) density variance only, which is not a direct observable. We investigate the utility of a 2D column density \\sigma _{\\Sigma /\\Sigma _0}^2-{\\cal M}_s relationship using solenoidally driven isothermal MHD simulations and find that the best fit follows closely the form of the 3D density \\sigma _{\\rho /\\rho _0}^2-{\\cal M}_s trend but includes a scaling parameter A such that \\sigma _{\\ln (\\Sigma /\\Sigma _0)}^2=A\\times \\ln (1+b^2{\\cal M}_s^2), where A = 0.11 and b = 1/3. This relation is consistent with the observational data reported for the Taurus and IC 5146 molecular clouds with b = 0.5 and A = 0.16, and b = 0.5 and A = 0.12, respectively. These results open up the possibility of using the 2D column density values of σ2 for investigations of the relation between the sonic Mach number and the probability distribution function (PDF) variance in addition to existing PDF sonic Mach number relations.

  14. Determinación de parámetros físicos aplicables en el escalamiento de la síntesis de zeolita NaA, a partir de geles aluminosilicatos

    Directory of Open Access Journals (Sweden)

    Carmen M. López

    2016-01-01

    Full Text Available Se estudió el efecto de parámetros físicos que influyen en la preparación de la zeolita NaA, a fin de determinar condiciones favorables para realizar el escalamiento de esta síntesis. Partiendo de una mezcla de síntesis con composición fija y cristalización a 80 °C se estudiaron los siguientes parámetros: orden y velocidad de agregado de las soluciones de partida, velocidad y tiempo de agitación de la mezcla de síntesis, agitación durante la cristalización, tiempo de cristalización y reciclo del licor madre separado en la filtración. Las muestras fueron identificadas mediante difracción de rayos X (DRX, caracterizadas por microscopía electrónica de barrido (MEB y se determinó su capacidad de adsorción de agua. La adición rápida y simultánea de las soluciones de partida, usando menor tiempo y velocidad de agitación de la mezcla de síntesis, resultan las condiciones más favorables para la obtención de zeolita A en el sistema estudiado. La agitación durante la cristalización disminuye el tiempo de calentamiento de la mezcla y aumenta la velocidad de cristalización, y se obtiene una zeolita de alta cristalinidad y pureza a 1 hora. Se comprobó la factibilidad de usar el licor madre como solución alcalina para la síntesis, significando esto un ahorro de reactivos.

  15. Activación de n-butano en Zeolitas USY: Influencia de la composición del catalizador y de la contaminación por sodio y vanadio

    OpenAIRE

    Sandoval Díaz, Luis Ernesto

    2010-01-01

    La zeolita USY es tal vez el catalizador más usado en el mundo. Su actividad y selectividad la hacen idónea para el proceso FCC , uno de los desarrollos industriales de mayor impacto en el mundo, que consiste en la ruptura de hidrocarburos pesados a través de la acción catalítica de un sólido ácido. Muchos metales existentes en la carga del crudo entran en contacto con el catalizador. La fuerte evidencia experimental obtenida durante más de 40 años indica que el catalizad...

  16. Utilización de la zeolita para disminuir los gases tóxicos de los motores de combustión interna. // The utilization of Cuban zeolites in the decrease of toxic gases emissions of internal combustion engines.

    OpenAIRE

    J. L. Reyes González; F. Tellez Granda

    2003-01-01

    En el trabajo se presentan los resultados obtenidos al utilizar la zeolita natural cubana para la disminución de los gasestóxicos que los motores de combustión interna MCI. envían a la atmósfera. Los experimentos fueron realizados en bancosde pruebas de MCI. tanto para motores de carburación como para motores diesel. Obteniéndose eficiencias de disminucióndel CO del 80 %, del CnHm del 50% y el humo negro en un 90%. Se demuestra la importancia de la granulometría de lazeolita para esta elimina...

  17. Reforma integral interior. Cal Nano - Esplugues de Llobregat

    OpenAIRE

    Escoté Solanellas, Laia

    2013-01-01

    El Projecte Final de Grau consisteix en la reforma integral interior de Cal Nano, situat a Esplugues de Llobregat. Cal Nano és el nom que se li dóna al conjunt format per dos edificis de vivendes de planta baixa i planta pis, amb un pati posterior comú. L’objectiu del treball és, ubicar-hi un únic edifici amb zona comú posterior per a quatre vivendes, dues a la planta baixa i dues a la planta pis. El document consta de tres apartats fonamentals : En el primer es parla de la ...

  18. Interpretação e utilidade da prova calórica Interpretation and use of caloric testing

    Directory of Open Access Journals (Sweden)

    Denise Utsch Gonçalves

    2008-06-01

    Full Text Available A prova calórica é o teste da avaliação otoneurológica que verifica a integridade do reflexo vestíbulo-ocular e possibilita avaliar cada labirinto separadamente. Os principais aspectos relacionados à realização, interpretação e utilidade da prova calórica foram revistos. MÉTODOS: Realizou-se revisão sistemática sobre as publicações ocorridas nos últimos cem anos sobre o assunto. Incluíram-se artigos originais transversais e longitudinais, de revisão e meta-análise. Excluíram-se revisões de papeleta, relatos de caso e editoriais. Os descritores utilizados foram: prova calórica, nistagmo, sistema vestibular, preponderância direcional, predomínio labiríntico, teste calórico monotermal, teste calórico com água gelada, fenômeno de Bell. Pesquisou-se as bases de dados COCHRAINE, MEDLINE, LILACS, CAPES. RESULTADOS: De 818 resumos de artigos, selecionou-se inicialmente 93 que preenchiam os critérios de inclusão. A leitura dos artigos resultou na seleção final de 55. Na análise dos artigos, enfatizou-se na discussão fundamentos da prova calórica, tipos de estimulação utilizados, prova calórica monotermal e com água gelada, questões relacionadas à interpretação dos resultados, variáveis e artefatos. COMENTÁRIOS FINAIS: os valores de referência utilizados na prova calórica podem variar de serviço para serviço, com ponto de corte definido a partir de estudos locais. Semiotécnica cuidadosa é fundamental para elevar a sensibilidade do exame.Caloric testing is an otoneurologic evaluation of the status of the vestibular-ocular reflex; it allows an evaluation of each labyrinth separately. The main aspects on the use and interpretation of caloric testing are reviewed. METHOD: A systematic review of papers published in the past one hundred years on caloric testing was undertaken. The inclusion criteria were: cross-sectional, longitudinal, original articles, reviews and meta-analyses. Reviews of patient charts

  19. Cal Council: A Story of Continuity and Change

    Science.gov (United States)

    Brunetti, Gerald J.

    2015-01-01

    Gerald Brunetti served as President of the California Council on the Education of Teachers (Cal Council or CCET) from 1992 to 1994. This article describes the author's involvement with the CCET beginning in 1979, and covers the details of accomplishments throughout his presidency, such as the development of "CCNews," mail balloting, and…

  20. INTCAL09 AND MARINE09 RADIOCARBON AGE CALIBRATION CURVES, 0-50,000 YEARS CAL BP

    OpenAIRE

    Reimer, P.J.; Baillie, M. G. L.; Bard, E.; Bayliss, A; Beck, J.W.; Blackwell, P. G.; Ramsey, C. Bronk; Buck, C. E.; Burr, G. S.; Edwards, R. L.; Friedrich, M.; P. M. Grootes; T. P. Guilderson; Hajdas, I.; Heaton, T.J.

    2009-01-01

    The IntCal04 and Marine04 radiocarbon calibration curves have been updated from 12 cal kBP (cal kBP is here defined as thousands of calibrated years before AD 1950), and extended to 50 cal kBP, utilizing newly available data sets that meet the IntCal Working Group criteria for pristine corals and other carbonates and for quantification of uncertainty in both the 14C and calendar timescales as established in 2002. No change was made to the curves from 0-12 cal kBP. The curves were constructed ...

  1. Utilización de la zeolita para disminuir los gases tóxicos de los motores de combustión interna. // The utilization of Cuban zeolites in the decrease of toxic gases emissions of internal combustion engines.

    Directory of Open Access Journals (Sweden)

    J. L. Reyes González

    2003-01-01

    Full Text Available En el trabajo se presentan los resultados obtenidos al utilizar la zeolita natural cubana para la disminución de los gasestóxicos que los motores de combustión interna MCI. envían a la atmósfera. Los experimentos fueron realizados en bancosde pruebas de MCI. tanto para motores de carburación como para motores diesel. Obteniéndose eficiencias de disminucióndel CO del 80 %, del CnHm del 50% y el humo negro en un 90%. Se demuestra la importancia de la granulometría de lazeolita para esta eliminación y para mantener la potencia del motor dentro de rangos aceptables.Palabras claves: Toxicidad, zeolita, medio ambiente, filtros, gases de escape._______________________________________________________________________________Abstract.In this paper are presented the results of the utilization of Cuban zeolites in the decrease of toxic gas emissions toatmosphere of internal combustion engines, (MCI. The experiments were carried out in test bank for gasoline and dieselengines. The efficiency in the decrement of CO was of 80%, CnHm in 50%, and 90 % in soot. The size of the zeolitesparticle importance in the efficiency is demonstrated.Key words: Toxicity, zeolite, enviroment, filters, gas emissions.

  2. Uso da adubação orgânica e cobertura morta na cultura da calêndula (Calendula officinalis L.) Use of organic fertilization and mulching in the production of calendula (Calendula officinalis L.)

    OpenAIRE

    C.B.O. Araújo; Santos, A. M.; L. A. Fernandes; Martins, E. R.; R.A. Sampaio; Costa, C. A.; G.L.D. Leite

    2009-01-01

    A calêndula representa fonte alternativa econômica principalmente para a agricultura familiar. O objetivo do presente trabalho foi avaliar os efeitos da adubação orgânica e do uso da cobertura morta sobre a produção de biomassa e teor de flavonóides totais em plantas de calêndula. O experimento foi realizado no Campus de Montes Claros da Universidade Federal de Minas Gerais, utilizando-se o delineamento em blocos casualizados em esquema fatorial 2x2x4 com quatro repetições: duas épocas de col...

  3. Mudanças Estratégicas das Empresas Calçadistas do Vale do Rio dos Sinos [Strategic Change among Footwear companies in the Vale do Rio dos Sinos

    OpenAIRE

    Serje Schmidt; Pedro de Almeida Costa; Ernani Cesar de Freitas

    2011-01-01

    A cadeia produtiva coureiro-calçadista tem passado por mudanças significativas na sua forma de operação em face às profundas mudanças ocorridas no ambiente competitivo internacional, o que exige das organizações uma nova visão sobre o seu posicionamento estratégico. Este artigo tem o objetivo de identificar o posicionamento estratégico das empresas calçadistas do Vale do Sinos, com base nas tipologias de Porter (1980), Mintzberg (2006) e Barney e Clark (2007). Esta pesquisa enquadra-se como d...

  4. Molecular characters and morphological genetics of CAL gene in Chinese cabbage

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    BcpCAL, the homologous gene of CAL, was isolated from Chinese cabbage. Unlike BobCAL of cauliflower, BcpCAL did not hold the terminating mutation in the fifth exon. After crosses of cauliflower with Chinese cabbage, the resultant hybrids failed to form curd, which implicates the genetic complement of BcpCAL to the mutated Bob CAL in the function of curd formation. One of CAL gene isolated from the hybrid apparently comes from the female parent (Chinese cabbage) even though there are a few of the bases substituted and deleted. The result offers the molecular and genetic evidences for the study of biological function of CAL in morphological genetics of curd.

  5. Logarithmic Corrections to the Black Hole Entropy Product of ${\\cal H}^{\\pm}$ via Cardy Formula

    CERN Document Server

    Pradhan, Parthapratim

    2016-01-01

    We compute the logarithmic corrections to the black hole (BH) entropy product of ${\\cal H}^{\\pm}$ \\footnote{ ${\\cal H}^{+}$ and ${\\cal H}^{-}$ denote outer (event) horizon and inner (Cauchy) horizons} by using \\emph{Cardy prescription}. We particularly apply this formula for BTZ BH. We show that logarithmic corrections to the entropy product of ${\\cal H}^{\\pm}$ when computed \\emph{via Cardy formula} it does not mass-independent (universal) nor does it quantized.

  6. Windows Calorimeter Control (WinCal) program computer software design description

    International Nuclear Information System (INIS)

    The Windows Calorimeter Control (WinCal) Program System Design Description contains a discussion of the design details for the WinCal product. Information in this document will assist a developer in maintaining the WinCal system. The content of this document follows the guidance in WHC-CM-3-10, Software Engineering Standards, Standard for Software User Documentation

  7. Morfometria de fibroblastos e fibrócitos durante o processo cicatricial na pele de coelhos da raça Nova Zelândia Branco tratados com calêndula Morphometry of fibroblasts and fibrocytes during wound healing in the skin of rabbits of the New Zeland White breed treated with marigold

    OpenAIRE

    Leonardo de Oliveira Pagnano; Silvana Martinez Baraldi-Artoni; Maria Rita Pacheco; Edanir dos Santos; Daniela Oliveira; Jeffrey Frederico Lui

    2008-01-01

    O objetivo deste estudo foi avaliar a capacidade cicatrizante da calêndula (Calendula officinalis L.) sobre feridas cutâneas experimentais, em 15 coelhos, distribuídos em três grupos denominados: excipiente, calêndula e controle. Cada animal foi submetido à uma incisão cirúrgica de 6cm de comprimento, lateral à coluna vertebral e suturada no padrão U. Os produtos avaliados foram colocados sobre as incisões durante sete dias na quantidade de 0,1ml (loção cremosa não-iônica - grupo excipiente; ...

  8. [Enforcement of type M 20 cal. 4 mm cartridges].

    Science.gov (United States)

    Dobosz, Tadeusz; Jaworski, Ryszard; Kawecki, Jerzy; Semiczek, Wiesław; Trnka, Jakub

    2002-01-01

    The aim of the paper was to investigate and compare the speed and energy of a bullet from 4 mm cal. cartridges of central ignition type M20, both original and transformed by addition of different kinds of propellants. Original cartridges are characterized by an average speed of the bullet of 144 m/s and average energy of 4.8 J. After transformation by the addition of on an average 31.3 mg of smokeless powder from a cartridge type LR'22, a maximum bullet speed of 299 m/s (average) and maximum energy of 21.2 joule (average) were reached. Our test showed that shots using transformed ammunition type M 20 cal. 4 mm can be dangerous for both health and life. Multiple M20 shot wounds may be very similar to single shot wounds caused by a shotshell cartridge fired from a shotgun weapon.

  9. Representation Theorems for Quadratic ${\\cal F}$-Consistent Nonlinear Expectations

    OpenAIRE

    Hu, Ying; Ma, Jin; Peng, Shige; Yao, Song

    2007-01-01

    International audience In this paper we extend the notion of ``filtration-consistent nonlinear expectation" (or ``${\\cal F}$-consistent nonlinear expectation") to the case when it is allowed to be dominated by a $g$-expectation that may have a quadratic growth. We show that for such a nonlinear expectation many fundamental properties of a martingale can still make sense, including the Doob-Meyer type decomposition theorem and the optional sampling theorem. More importantly, we show that an...

  10. On the correspondence between CAL and lagged cohort life expectancy

    OpenAIRE

    Michel Guillot; Hyun Sik Kim

    2011-01-01

    It has been established that under certain mortality assumptions, the current value of the Cross-sectional Average length of Life (CAL) is equal to the life expectancy for the cohort currently reaching its life expectancy. This correspondence is important, because the life expectancy for the cohort currently reaching its life expectancy, or lagged cohort life expectancy (LCLE), has been discussed in the tempo literature as a summary mortality measure of substantive interest. In this paper, we...

  11. Cadeia Global de Valor de couro e calçados: Padrões de inserção do Brasil, México e Taiwan

    OpenAIRE

    de Santana, Synthia Kariny Silva

    2015-01-01

    O objetivo deste texto é promover uma discussão sobre a posição do Brasil na Cadeia Global de Valor (CGV) no complexo coureiro-calçadista. A fim de cumprir este objetivo, analisou-se o padrão de inserção internacional em Taiwan e no México como valiosas experiências para a indústria calçadista brasileira. Serão exploradas as questões do upgrading funcional e da estrutura de governança dentro da cadeia para a articulação e integração dos diversos atores desta indústria. The main objective of t...

  12. Marine04 marine radiocarbon age calibration, 0-26 cal kyr BP

    OpenAIRE

    Hughen, Konrad A.; Baillie, Mike G.L.; Bard, Edouard; Beck, J. Warren; Bertrand, Chanda J.H.; Blackwell, Paul G.; Caitlin E. Buck; Burr, George S; Cutler, Kirsten B.; Damon, Paul E.; Edwards, Richard L.; Fairbanks, Richard G.; Friedrich, Michael; Guilderson, Thomas P; Kromer, Bernd

    2004-01-01

    New radiocarbon calibration curves, IntCal04 and Marine04, have been constructed and internationally ratified to replace the terrestrial and marine components of IntCal98. The new calibration data sets extend an additional 2000 yr, from 0–26 cal kyr BP (Before Present, 0 cal BP = AD 1950), and provide much higher resolution, greater precision, and more detailed structure than IntCal98. For the Marine04 curve, dendrochronologically-dated tree-ring samples, converted with a box diffusion model ...

  13. CalSimHydro Tool - A Web-based interactive tool for the CalSim 3.0 Hydrology Prepropessor

    Science.gov (United States)

    Li, P.; Stough, T.; Vu, Q.; Granger, S. L.; Jones, D. J.; Ferreira, I.; Chen, Z.

    2011-12-01

    CalSimHydro, the CalSim 3.0 Hydrology Preprocessor, is an application designed to automate the various steps in the computation of hydrologic inputs for CalSim 3.0, a water resources planning model developed jointly by California State Department of Water Resources and United States Bureau of Reclamation, Mid-Pacific Region. CalSimHydro consists of a five-step FORTRAN based program that runs the individual models in succession passing information from one model to the next and aggregating data as required by each model. The final product of CalSimHydro is an updated CalSim 3.0 state variable (SV) DSS input file. CalSimHydro consists of (1) a Rainfall-Runoff Model to compute monthly infiltration, (2) a Soil moisture and demand calculator (IDC) that estimates surface runoff, deep percolation, and water demands for natural vegetation cover and various crops other than rice, (3) a Rice Water Use Model to compute the water demands, deep percolation, irrigation return flow, and runoff from precipitation for the rice fields, (4) a Refuge Water Use Model that simulates the ponding operations for managed wetlands, and (5) a Data Aggregation and Transfer Module to aggregate the outputs from the above modules and transfer them to the CalSim SV input file. In this presentation, we describe a web-based user interface for CalSimHydro using Google Earth Plug-In. The CalSimHydro tool allows users to - interact with geo-referenced layers of the Water Budget Areas (WBA) and Demand Units (DU) displayed over the Sacramento Valley, - view the input parameters of the hydrology preprocessor for a selected WBA or DU in a time series plot or a tabular form, - edit the values of the input parameters in the table or by downloading a spreadsheet of the selected parameter in a selected time range, - run the CalSimHydro modules in the backend server and notify the user when the job is done, - visualize the model output and compare it with a base run result, - download the output SV file to be

  14. Lesões do nervo cubital em costureiras de calçados: abordagem medico-social

    Directory of Open Access Journals (Sweden)

    Lutero Arno Renck

    1981-12-01

    Full Text Available Foram estudadas 19 pacientes que apresentavam lesão traumática do nervo cubital. Todas eram costureiras de calçados e apoiavam o cotovelo sobre a mesa de trabalho, causando microtraumatismos ao nervo cubital. Os exames eletromiográficos revelaram lesão do neurônio motor periférico. A velocidade de condução nervosa estava diminuída em todos os casos. O tratamento constou de afastamento do serviço, uso de analgésicos, complexo B, corticóide e fisioterapia. Não havendo melhora era preconizada cirurgia, com transposição do nervo cubital. São esplanadas medidas preventivas para este acidente profissional.

  15. Molecular evolution of the multiple calmodulin-like cal genes in C. elegans and in nematodes.

    Science.gov (United States)

    Karabinos, Anton

    2016-09-01

    Calmodulin (CaM) is a major EF hand containing intracellular calcium receptor in animals and plants; however, eukaryotes also express a number of related CaM-like proteins. We have previously characterized an embryonic phenotype of the single Caenorhabditis elegans CaM gene cmd-1, reported no visible RNAi phenotype for the four related cal-1 to cal-4 genes and started tissue-specific expression analyses of these proteins. In the present study, we analyzed evolutionary aspects of the previously reported CAL-1 to CAL-4 proteins, along with the four new CAL-5 to CAL-8 sequences retrieved from the worm database. Phylogenetic analyses suggest that all C. elegans CAL proteins arose from a CaM ancestor through repeated gene duplications, fusions and sequence divergence. The same holds, also, for the variable N-terminal extensions of the CAL-1 to CAL-4 proteins, which have evolved from the CaM-like core domain. We found 97 CAL homologs in different nematode clades and also detected two CAL-7-related sequences outside the nematodes. Moreover, the C. elegans-specific cal-6 gene, representing the most CaM-related sequence found in nematodes so far, harbours many deletions, insertions and sequence substitutions and is predicted, therefore, to be non-functional. These analyses provide an insight into a complex and dynamic origin of the multiple CAL genes in C. elegans and in nematodes and represent also a basis for further functional studies of these CaM-related sequences in nematodes. PMID:27558386

  16. A PROPOSITO DE UN ENSAYO CON ABONOS (cal y harina de huesos) EN ALFALFAl (Medicago sativa)i

    OpenAIRE

    Isidoro Mogilner; Héctor Cenoz; Dora Vidomlansky, F. de

    2010-01-01

    En este trabajo, los autores estudian el efecto que sobre el rendimiento de la alfalfa (Medicago sativa) produce la incorporación de diferentes dosis de cal y harina de huesos, en un suelo pobre de P y Ca; de una textura pesada con alto contenido de arcilla en todos los horizontes, de un pH ácido (5.1 a 6.2) y que es característico de la zona donde fué hecha la experiencia.
    Se han obtenido result...

  17. Mass spectra in softly broken ${\\cal N}=2$ SQCD

    CERN Document Server

    Chernyak, Victor L

    2016-01-01

    Considered is ${\\cal N}=2\\,\\, SU(N_c)$ or $U(N_c)$ SQCD with $N_c+1cal N}=1$ by the mass term $\\mu_{\\rm x}{\\rm Tr} (X^2)$ of colored adjoint scalar partners of gluons, $\\mu_{\\rm x}\\ll\\Lambda_2$ ( $\\Lambda_2$ is the scale factor of the $SU(N_c)$ gauge coupling). There is a large number of different types of vacua in this theory with both unbroken and spontaneously broken global flavor symmetry $U(N_F)\\rightarrow U({\\rm n}_1)\\times U({\\rm n}_2)$. We consider in this paper the large subset of these vacua with the unbroken nontrivial $Z_{2N_c-N_F\\geq 2}$ discrete symmetry, at different hierarchies between the Lagrangian parameters $m\\gtrless\\Lambda_2,\\, \\mu_{\\rm x}\\gtrless m$. The forms of low energy Lagrangians, quantum numbers of light particles and mass spectra are described for all these vacua. Our results differ from corresponding results in recent papers arXiv:1304.0822; 1403.60...

  18. Precision Measurements of ${\\cal B}[\\psi(3686) \\to \\pi^+\\pi^- J/\\psi]$ and ${\\cal B}[J/\\psi\\to l^+l^-]$

    CERN Document Server

    Ablikim, M; Albayrak, O; Ambrose, D J; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Becker, J; Bennett, J V; Bertani, M; Bian, J M; Boger, E; Bondarenko, O; Boyko, I; Braun, S; Briere, R A; Bytev, V; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, J C; Chen, M L; Chen, S J; Chen, X R; Chen, Y B; Cheng, H P; Chu, Y P; Cronin-Hennessy, D; Dai, H L; Dai, J P; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; Ding, W M; Ding, Y; Dong, L Y; Dong, M Y; Du, S X; Fang, J; Fang, S S; Fava, L; Feng, C Q; Friedel, P; Fu, C D; Fu, J L; Fuks, O; Gao, Y; Geng, C; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, T; Guo, Y P; Han, Y L; Harris, F A; He, K L; He, M; He, Z Y; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Huang, G M; Huang, G S; Huang, J S; Huang, L; Huang, X T; Huang, Y; Hussain, T; Ji, C S; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, X S; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Jing, F F; Kalantar-Nayestanaki, N; Kavatsyuk, M; Kloss, B; Kopf, B; Kornicer, M; Kuehn, W; Lai, W; Lange, J S; Lara, M; Larin, P; Leyhe, M; Li, C H; Li, Cheng; Li, Cui; Li, D M; Li, F; Li, G; Li, H B; Li, J C; Li, K; Li, Lei; Li, Q J; Li, W D; Li, W G; Li, X L; Li, X N; Li, X Q; Li, X R; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Liao, X T; Lin, D X; Liu, B J; Liu, C L; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H; Liu, H B; Liu, H H; Liu, H M; Liu, H W; Liu, J P; Liu, K; Liu, K Y; Liu, P L; Liu, Q; Liu, S B; Liu, X; Liu, Y B; Liu, Z A; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, G R; Lu, H J; Lu, J G; Lu, X R; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lv, M; Ma, F C; Ma, H L; Ma, Q M; Ma, S; Ma, T; Ma, X Y; Maas, F E; Maggiora, M; Malik, Q A; Mao, Y J; Mao, Z P; Messchendorp, J G; Min, J; Min, T J; Mitchell, R E; Mo, X H; Moeini, H; Morales, C Morales; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nikolaev, I B; Ning, Z; Olsen, S L; Ouyang, Q; Pacetti, S; Park, J W; Pelizaeus, M; Peng, H P; Peters, K; Ping, J L; Ping, R G; Poling, R; Prencipe, E; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, X S; Qin, Y; Qin, Z H; Qiu, J F; Rashid, K H; Redmer, C F; Rong, G; Ruan, X D; Sarantsev, A; Shao, M; Shen, C P; Shen, X Y; Sheng, H Y; Shepherd, M R; Song, W M; Song, X Y; Spataro, S; Spruck, B; Sun, D H; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Sun, Z T; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Toth, D; Ullrich, M; Uman, I; Varner, G S; Wang, B; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, Q J; Wang, S G; Wang, X F; Wang, X L; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z Y; Wei, D H; Wei, J B; Weidenkaff, P; Wen, Q G; Wen, S P; Werner, M; Wiedner, U; Wu, L H; Wu, N; Wu, S X; Wu, W; Wu, Z; Xia, L G; Xia, Y X; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, Q J; Xu, Q N; Xu, X P; Xu, Z R; Xue, Z; Yan, L; Yan, W B; Yan, Y H; Yang, H X; Yang, Y; Yang, Y X; Ye, H; Ye, M; Ye, M H; Yu, B X; Yu, C X; Yu, H W; Yu, J S; Yu, S P; Yuan, C Z; Yuan, Y; Zafar, A A; Zallo, A; Zang, S L; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H Y; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, LiLi; Zhang, R; Zhang, S H; Zhang, X J; Zhang, X Y; Zhang, Y; Zhang, Y H; Zhang, Z P; Zhang, Z Y; Zhang, Zhenghao; Zhao, G; Zhao, H S; Zhao, J W; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, S J; Zhao, T C; Zhao, X H; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, Y H; Zhong, B; Zhou, L; Zhou, X; Zhou, X K; Zhou, X R; Zhu, C; Zhu, K; Zhu, K J; Zhu, S H; Zhu, X L; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, J; Zou, B S; Zou, J H

    2013-01-01

    Based on $(106.41 \\pm 0.86)\\times 10^{6}$ $\\psi(3686)$ events collected with the BESIII detector at the BEPCII collider, the branching fractions of $\\psi(3686) \\to \\pi^+\\pi^- J/\\psi$, $J/\\psi \\to e^+e^- $, and $J/\\psi \\to \\mu^+\\mu^-$ are measured. We obtain ${\\cal B}[\\psi(3686) \\to \\pi^+\\pi^-J/\\psi]=(34.98\\pm 0.02\\pm 0.45)%$, ${\\cal B}[J/\\psi \\to e^+e^-] = (5.983 \\pm 0.007 \\pm 0.037)%$ and ${\\cal B}[J/\\psi \\to \\mu^+\\mu^-] = (5.973 \\pm 0.007 \\pm 0.038)%$. The measurement of ${\\cal B}[\\psi(3686) \\to \\pi^{+}\\pi^{-}J/\\psi]$ confirms the CLEO-c measurement, and is apparently larger than the others. The measured $J/\\psi$ leptonic decay branching fractions agree with previous experiments within one standard deviation. These results lead to ${\\cal B}[J/\\psi \\to l^+l^-] = (5.978 \\pm 0.005 \\pm 0.040)%$ by averaging over the $e^{+}e^{-}$ and $\\mu^{+}\\mu^{-}$ channels and a ratio of ${\\cal B}[J/\\psi \\to e^+e^-] / {\\cal B}[J/\\psi \\to \\mu^+\\mu^-] = 1.0017 \\pm 0.0017 \\pm 0.0033$, which tests $e$-$\\mu$ universality at the fo...

  19. The Return of Two-Class Medicine—III Effects of Medi-Cal Reform

    OpenAIRE

    Waitzkin, Howard

    1985-01-01

    California's drastic Medi-Cal reforms have created great difficulties in health care for the poor. Patients' clinical problems seldom are apparent in descriptions of changes in public insurance programs. Rapidly escalating costs of Medi-Cal led to irresistible pressures for reform, especially from the business community. The new Medi-Cal regulations provide for prospective contracts with hospitals for inpatient services, the transfer of “Medically Indigent Adults” to the responsibility of cou...

  20. A Novel CalB-Type Lipase Discovered by Fungal Genomes Mining

    OpenAIRE

    Vaquero, Maria E.; de Eugenio, Laura I.; Martínez, Maria J.; Jorge Barriuso

    2015-01-01

    The fungus Pseudozyma antarctica produces a lipase (CalB) with broad substrate specificity, stability, high regio- and enantio-selectivity. It is active in non-aqueous organic solvents and at elevated temperatures. Hence, CalB is a robust biocatalyst for chemical conversions on an industrial scale. Here we report the in silico mining of public metagenomes and fungal genomes to discover novel lipases with high homology to CalB. The candidates were selected taking into account homology and cons...

  1. Automatic synthesis of TTA processor networks from RVC-CAL dataflow programs

    OpenAIRE

    Boutellier, Jani; Silven, Olli; Raulet, Mickaël

    2011-01-01

    International audience The RVC-CAL dataflow language has recently become standardized through its use as the official language of Reconfigurable Video Coding (RVC), a recent standard by MPEG. The tools developed for RVC-CAL have enabled the transformation of RVC-CAL dataflow programs into C language and VHDL (among others), enabling implementations for instruction processors and HDL synthesis. This paper introduces new tools that enable automatic creation of heterogeneous multiprocessor ne...

  2. Automatic Hierarchical Discovery of Quasi-Static Schedules of RVC-CAL Dataflow Programs

    OpenAIRE

    Boutellier, Jani; Raulet, Mickaël; Silvén, Olli

    2013-01-01

    International audience RVC-CAL is an actor-based dataflow language that enables concurrent, modular and portable description of signal processing algorithms. RVC-CAL programs can be compiled to implementation languages such as C/C++ and VHDL for producing software or hardware implementations. This paper presents a methodology for automatic discovery of piecewise-deterministic (quasi-static) execution schedules for RVC-CAL program software implementations. Quasi-static scheduling moves comp...

  3. Code generation for the MPEG Reconfigurable Video Coding framework: From CAL actions to C functions

    OpenAIRE

    Wipliez, Matthieu; Roquier, Ghislain; Raulet, Mickael; Nezan, Jean François; Déforges, Olivier

    2008-01-01

    International audience The MPEG reconfigurable video coding (RVC) framework is a new standard under development by MPEG that aims at providing a unified specification of current MPEG video coding technologies. In this framework, a decoder is built as a configuration of video coding modules taken from the standard ldquoMPEG toolbox libraryrdquo. The elements of the library are specified using the CAL actor language (CAL). CAL is a dataflow based language providing computation models that ar...

  4. Software synthesis of CAL actors for the MPEG reconfigurable Video Coding framework

    OpenAIRE

    Roquier, Ghislain; Wipliez, Matthieu; Raulet, Mickael; Nezan, Jean François; Déforges, Olivier

    2008-01-01

    International audience The MPEG Reconfigurable Video Coding (RVC) framework aims to provide a unified specification of all video technology. In this framework, a decoder is modularly built as a configuration of video coding tools taken from the MPEG toolbox library. The elements of the library are specified using the CAL Actor Language. CAL is a dataflow based language providing computation models that are concurrent and modular. This paper presents a synthesis tool that from a CAL specifi...

  5. CAL: A Language for Aggregating Functional and Extrafunctional Constraints in Streaming Networks

    CERN Document Server

    Shafarenko, Alex

    2011-01-01

    In this article we present the {\\em Constraint Aggregation Language} (CAL), a declarative language for describing properties of stateless program components that interact by exchanging messages. CAL allows one to describe functional as well as extra-functional behaviours, such as computation latency. The CAL language intention is to be able to describe the behaviour of so-called boxes in the context of S-Net. However, the language would find application in other coordination models based on stateless components.

  6. Carrier Analysis Lab (CAL) – Aircraft/Weapons/Ship Compatibility Lab

    Data.gov (United States)

    Federal Laboratory Consortium — Purpose: The Carrier Analysis Lab (CAL) - Aircraft/Weapons/Ship Compatibility Lab located at the Naval Air Warfare Center Aircraft Division, Lakehurst, NJ provides...

  7. Análisis del tratamiento ideal usando baños termotratados para la separación de cal de los residuos de descarne en curtiembres

    Directory of Open Access Journals (Sweden)

    Yelitza Aguas Mendoza

    2016-07-01

    Full Text Available Se analizó el tratamiento ideal usando baños termotratados para la separación de cal de los residuos de descarne, del proceso de curtición semiartesanal desarrollado en Sampués, Departamento de Sucre (Colombia. Para su desarrollo se seleccionó una muestra de carnaza representativa, homogénea y con menos tiempo de almacenamiento. Dicha muestra se redujo al tamaño de 1 cm2 y se conservó refrigerada para posteriormente realizar los análisis de grasa, pH y presencia de cal. Los baños termotratados de desencalado se realizaron a tres temperaturas diferentes (26, 30 y 35 ºC. Se utilizó como agente desencalante el acido sulfúrico en tres concentraciones (3, 2 y 1 N. Además se usó un sistema de agitación simulando el bombo en proceso industrial. Se llevaron a cabo nueve pruebas con tres repeticiones para mayor confiabilidad de los datos, en donde se determinó la correlación existente entre las variables independientes, temperatura y concentración, sobre la cal impregnada y los resultados de grasa en cada una de las muestras en un tiempo de 4 y 8 h.

  8. The ${\\cal N}=4$ Schur index with Polyakov loops

    CERN Document Server

    Drukker, Nadav

    2015-01-01

    Recently the Schur index of ${\\cal N}=4$ SYM was evaluated in closed form to all orders including exponential corrections in the large $N$ expansion and for fixed finite $N$. This was achieved by identifying the matrix model which calculates the index with the partition function of a system of free fermions on a circle. The index can be enriched by the inclusion of loop operators and the case of Wilson loops is particularly easy, as it amounts to inserting extra characters into the matrix model. The Fermi-gas approach is applied here to this problem, the formalism is explored and explicit results at large $N$ are found for the fundamental as well as a few other symmetric and antisymmetric representations.

  9. CAL--ERDA program manual. [Building Design Language; LOADS, SYSTEMS, PLANT, ECONOMICS, REPORT, EXECUTIVE, CAL-ERDA

    Energy Technology Data Exchange (ETDEWEB)

    Hunn, B. D.; Diamond, S. C.; Bennett, G. A.; Tucker, E. F.; Roschke, M. A.

    1977-10-01

    A set of computer programs, called Cal-ERDA, is described that is capable of rapid and detailed analysis of energy consumption in buildings. A new user-oriented input language, named the Building Design Language (BDL), has been written to allow simplified manipulation of the many variables used to describe a building and its operation. This manual provides the user with information necessary to understand in detail the Cal-ERDA set of computer programs. The new computer programs described include: an EXECUTIVE Processor to create computer system control commands; a BDL Processor to analyze input instructions, execute computer system control commands, perform assignments and data retrieval, and control the operation of the LOADS, SYSTEMS, PLANT, ECONOMICS, and REPORT programs; a LOADS analysis program that calculates peak (design) zone and hourly loads and the effect of the ambient weather conditions, the internal occupancy, lighting, and equipment within the building, as well as variations in the size, location, orientation, construction, walls, roofs, floors, fenestrations, attachments (awnings, balconies), and shape of a building; a Heating, Ventilating, and Air-Conditioning (HVAC) SYSTEMS analysis program capable of modeling the operation of HVAC components including fans, coils, economizers, humidifiers, etc.; 16 standard configurations and operated according to various temperature and humidity control schedules. A plant equipment program models the operation of boilers, chillers, electrical generation equipment (diesel or turbines), heat storage apparatus (chilled or heated water), and solar heating and/or cooling systems. An ECONOMIC analysis program calculates life-cycle costs. A REPORT program produces tables of user-selected variables and arranges them according to user-specified formats. A set of WEATHER ANALYSIS programs manipulates, summarizes and plots weather data. Libraries of weather data, schedule data, and building data were prepared.

  10. Comparing Outcomes for Los Angeles County's HUD-Assisted and Unassisted CalWORKS Leavers.

    Science.gov (United States)

    Verma, Nandita; Hendra, Richard

    The impact of supplemental assistance from the U.S. Department of Housing and Urban Development (HUD) on CalWORKs leavers was examined in a study of CalWORKs recipients in Los Angeles County, California, who stopped receiving welfare benefits in the third quarter of 1998. Two groups received federal housing assistance at the time of exit from…

  11. CAL and Tools for the Instructor-User (The Features of SPELEO).

    Science.gov (United States)

    de La Passardiere, Brigitte

    1989-01-01

    Defines the role of the instructor-user in computer-assisted learning (CAL) and discusses the need to be able to alter and adapt existing CAL software for particular teaching needs. SPELEO, an authoring system developed in France that allows the modification of courseware content, is described. (eight references) (LRW)

  12. Data Management Standards in Computer-aided Acquisition and Logistic Support (CALS)

    Science.gov (United States)

    Jefferson, David K.

    1990-01-01

    Viewgraphs and discussion on data management standards in computer-aided acquisition and logistic support (CALS) are presented. CALS is intended to reduce cost, increase quality, and improve timeliness of weapon system acquisition and support by greatly improving the flow of technical information. The phase 2 standards, industrial environment, are discussed. The information resource dictionary system (IRDS) is described.

  13. 78 FR 1264 - CalAmp Wireless Networks Corporation, Waseca, MN; Notice of Negative Determination Regarding...

    Science.gov (United States)

    2013-01-08

    ... Employment and Training Administration CalAmp Wireless Networks Corporation, Waseca, MN; Notice of Negative... workers of the subject firm (TA-W-80,399A; CalAmp Wireless Networks Corporation, Waseca, Minnesota... Wireless Networks Corporation, Waseca, Minnesota to apply for TAA, the Department determines that...

  14. CALS and the Product State Model - Methodology and Supporting Schools and Paradigms

    DEFF Research Database (Denmark)

    Larsen, Michael Holm

    1998-01-01

    This paper address the preliminary considerations in a research project, initiated February 1997, regarding Continuous Acquisition and Life-cycle Support (CALS) which is a part of the activities in CALS Center Denmark. The CALS concept is presented focusing on the Product State Model (PSM). The PSM...... will be developed upon, will be discussed. Also, the parameters for evaluating the PSM will be considered. In establishing the theoretical body of knowledge with respect to CALS, an identification of schools and paradigms within the research area of applying information technology in a manufacturing environment...... will be provided. Focus will be put on exchange and sharing of product information in the production. Criteria for choosing certain theories upon which CALS can be supported will also be discussed....

  15. Caracterización de bentonitas y zeolitas sin tratamiento como refuerzo en materiales compuestos de matriz polimérica//Characterization of untreated zeolites and bentonites as reinforcement in polymer matrix composites

    Directory of Open Access Journals (Sweden)

    Francisco Jesús Mondelo‐García

    2014-01-01

    Full Text Available Las bentonitas con microestructuras compuestas de placas silicio aluminosas. Se logró el objetivo de caracterizar las bentonitas sódicas de Wyoming, USA, Patagonia de Argentina, nordeste de Brasil, así como las bentonitas policatiónicas de Brasil, la cálcica activada con sodio y zeolita de Cuba no organofilizadas para emplearlas como refuerzo en materiales compuestos de matriz polimérica. Estosmateriales se evaluaron usando técnicas físico-químicas como fluorescencia de rayos X, difracción de rayos X, microscopia electrónica de barrido, humedad, capacidad de intercambio catiónico, absorción e hinchabilidad en diluyente acuoso. Los resultados confirmaron rangos variables de intercambio catiónico,hinchamiento y absorciòn en agua entre las bentonitas analizadas, debido a su naturaleza química estructural en hidratación, logrando mayores valores las sódicas, luego la cálcica activada y con menor valor las policatiónicas, pero permiten usarlas como carga en polímeros.Palabras claves: bentonita, zeolita, matriz polimérica, organofilizada, materiales compuestos._____________________________________________________________________________AbstractBentonites with aluminous silicon microstructure composed of plates. The work accomplished to characterize the sodium bentonites in Wyoming USA, Patagonia Argentina, Northeast Brazil and the Brazilian polycationic bentonites, calcium-activated sodium zeolite from Cuba without organic modificationnot organophilized to employ as reinforcing in composite materials of polymer matrix. These materials were evaluated for physical and chemical assay techniques such as X-ray fluorescence, X-ray diffraction, scanning electron microscopy, moisture, cation exchange capacity, absorption and swelling aqueousdiluent. The results confirmed variables ranges of cationic exchange, swelling and water absorption from the bentonites tested, due to its chemical-structural hydration, achieving higher values nature

  16. 78 FR 42156 - Sonoma-Marin Area Rail Transit District-Acquisition Exemption-In Marin County, Cal.

    Science.gov (United States)

    2013-07-15

    ... County, Cal. AGENCY: Surface Transportation Board, DOT. ACTION: Notice of Exemption. SUMMARY: The Board... approximately 11.25-mile line of railroad in Marin County, Cal., from Golden Gate Bridge, Highway,...

  17. Terracotas del santuario de Calés (Calvi, Campania

    Directory of Open Access Journals (Sweden)

    J. M. BLÁZQUEZ

    2009-10-01

    Full Text Available El Museo Arqueológico Nacional de Madrid, entre sus magníficas colecciones, exhibe una compuesta por un numeroso conjunto de terracotas traídas de Italia en el siglo pasado por el Marqués de Salamanca. La colección Calvi, procedente del Santuario de Calés, en Campania, y así llamada del lugar de procedencia, ha sido repartida entre varios museos españoles, pero el grupo más numeroso es el depositado en el Museo Arqueológico Nacional que, a pesar de la alta calidad artística de las piezas y del buen estado de conservación de todas ellas, ha permanecido hasta el presente inédita. Tan sólo F. Benoit y nosotros, hemos publicado algunas terracotas de las que representan caballos. Otros investigadores, como Bianchi Bandinelli, han aludido a esta colección que, como las similares guardadas en los museos de Lecce, Capua, Louvre, Leide, British Museum, etc., se encuentra inédita. Particular interés ofrece el grupo conservado en la Glyptothek Ny Carlsberg, de Copenhague, algunos ejemplares se guardan en el Museo Universitario de Zurich y en el Museum f. ant. Kleinkunst de Munich. En Roma los conjuntos más numerosos de estas terracotas se encuentran depositados en los Museos Gregoriano Etrusco del Vaticano, Villa Giulia, y Nazionale Romano.

  18. The TileCal Optical Multiplexer Board 9U

    CERN Document Server

    Valero, A; The ATLAS collaboration; Castillo, V; Ferrer, A; González, V; Hernández, Y; Higón, E; Marín, CA; Moreno, P; Sanchís, E; Solans, C; Valls, JA

    2011-01-01

    TileCal is the hadronic calorimeter of the ATLAS experiment at LHC/CERN. The system contains roughly 10,000 channels of read-out electronics, whose signals are gathered and digitized in the front-end electronics and then transmitted to the counting room through two redundant optical links. Then, the data is received in the back-end system by the Optical Multiplexer Board (OMB) 9U which performs a CRC check to the redundant data to avoid Single Event Upsets errors. A real-time decision is taken on the event-to-event basis to transmit single data to the ReadEOut Drivers (RODs) for processing. Due to the low dose level expected during the first years of operations in ATLAS it was decided not to use a redundant system and currently the front-end electronics is directly connected to the RODs. However, the increasing luminosity of the LHC will force to use the redundant read-out and the OMB system will be installed. Moreover, the OMB can be used as a ROD injector to emulate the front-end electronics for ROD softwar...

  19. 75 FR 52589 - Notice of Intent To Prepare a Supplemental Environmental Impact Statement (SEIS) for the Cal...

    Science.gov (United States)

    2010-08-26

    ... (SEIS) for the Cal Black Memorial Airport at Halls Crossing, UT AGENCY: Federal Aviation Administration... Decision concerning the development of Cal Black Memorial Airport. This supplemental EIS does not involve any new development or project at the airport. The Cal Black Memorial Airport opened in April 1992....

  20. SÍNTESIS DE UNA MEMBRANA ZEOLÍTICA DE TIPO Y SOPORTADA EN a-ALÚMINA: EFECTO DEL TRATAMIENTO TÉRMICO SOBRE LA ESTRUCTURA

    Directory of Open Access Journals (Sweden)

    Ana P. Araújo

    2012-01-01

    Full Text Available En este trabajo se llevó a cabo la preparación de una membrana zeolítica (Y/α-alúmina utilizando el método de crecimiento secundario con semilla. La zeolita Y fue sintetizada utilizando el método hidrotérmico. El soporte cerámico (α-alúmina fue preparado a través de la técnica de conformación de post cerámico y sinterizada a 1200oC/1h. Los materiales se caracterizaron por espectroscopía de fluorescencia de rayos X por energía dispersiva (EDX, difracción de rayos X (DRX y microscopia electrónica de barrido (MEB. La formación de una película zeolitíca homogénea sobre la superficie de soporte cerámico se observó a partir de los difractogramas de rayos x y de las imágenes obtenidas por MEB. El proceso de tratamiento térmico presentó evidencias de que hubo modificaciones en las estructuras de la membrana zeolítica.

  1. Windows Calorimeter Control (WinCal) system configuration control board (SCCB) operating procedure

    International Nuclear Information System (INIS)

    This document describes the operating procedure for the System Configuration Control Board (SCCB) performed in support of the Windows Calorimeter Control (WinCal) system. This board will consist of representatives from Babcock and Wilcox Hanford Company Babcock and Wilcox Protec, Inc.; and Lockheed Martin Services, Inc. In accordance with agreements for the joint use of the Babcock and Wilcox Hanford Company calorimeters located in the Hanford Site Plutonium Finishing Plant (PFP) Nondestructive Assay Laboratory, concurrence regarding changes to the WinCal system will be obtained from the International Atomic Energy Agency (IAEA). Further, changes to the WinCal software will be communicated to Los Alamos National Laboratory

  2. CalVR: an advanced open source virtual reality software framework

    Science.gov (United States)

    Schulze, Jürgen P.; Prudhomme, Andrew; Weber, Philip; DeFanti, Thomas A.

    2013-03-01

    We developed CalVR because none of the existing virtual reality software frameworks offered everything we needed, such as cluster-awareness, multi-GPU capability, Linux compatibility, multi-user support, collaborative session support, or custom menu widgets. CalVR combines features from multiple existing VR frameworks into an open-source system, which we use in our laboratory on a daily basis, and for which dozens of VR applications have already been written at UCSD but also other research laboratories world-wide. In this paper, we describe the philosophy behind CalVR, its standard and unique features and functions, its programming interface, and its inner workings.

  3. Computer-aided acquisition and logistics support (CALS): Concept of Operations for Depot Maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Bourgeois, N.C.; Greer, D.K.

    1993-04-01

    This CALS Concept of Operations for Depot Maintenance provides the foundation strategy and the near term tactical plan for CALS implementation in the depot maintenance environment. The user requirements enumerated and the overarching architecture outlined serve as the primary framework for implementation planning. The seamless integration of depot maintenance business processes and supporting information systems with the emerging global CALS environment will be critical to the efficient realization of depot user's information requirements, and as, such will be a fundamental theme in depot implementations.

  4. Frontline CALS - Extranet Enabled Support of Customer Relations Based on Product State Information

    DEFF Research Database (Denmark)

    Larsen, Michael Holm; Franck, Lesley Robert; Pedersen, Mogens Kühn

    1999-01-01

    commerce called Frontline CALS. Frontline CALS integrate three bodies of knowledge, i.e. Continuous Acquisition and Lifecycle Support, Electronic Commerce, and the Customer Consumption Chain in order to construct a concept that enhances the service quality for customers with time critical operations....... The essence of Frontline CALS is that it combines a product and a customer view with the aim of enhancing the service quality offered by the dealers in collaboration with the producer. The article further provides empirical insight from an early prototype implementation of a Web Service System intended...

  5. New ${\\cal W}_{q,p}(sl(2))$ algebras from the elliptic algebra ${\\cal A}_{q,p}({\\hat sl}(2)_c)$

    CERN Document Server

    Avan, J; Rossi, M; Sorba, Paul

    1997-01-01

    We construct operators t(z) in the elliptic algebra introduced by Foda et al. ${\\cal A}_{q,p}({\\hat sl}(2)_c)$. They close an exchange algebra when p^m=q^{c+2} for m integer. In addition they commute when p=q^{2k} for k integer non-zero, and they belong to the center of ${\\cal A}_{q,p}({\\hat sl}(2)_c)$ when k is odd. The Poisson structures obtained for t(z) in these classical limits are identical to the q-deformed Virasoro Poisson algebra, characterizing the exchange algebras at generic values of p, q and m as new ${\\cal W}_{q,p}(sl(2))$ algebras.

  6. The M8 Power Calibration Experiment (M8CAL)

    Energy Technology Data Exchange (ETDEWEB)

    Robinson, W. R.; Bauer, T. H.

    1994-05-01

    The M8 calibration experiment was a series of 23 irradiations in TREAT performed to determine the relationship between the fission power generated in the TREAT core and the fission power generated in experiment fuel located in an in-core experiment vehicle and irradiated by core neutrons. The experiment was planned to provide the essential calibration information specifically needed for planning and analysis of the M8 test (and subsequent tests similar in geometry to M8) to be performed in the post-upgrade TREAT core. Irradiations were performed in TREAT cores loaded with a full-slotted (to optimize hodoscope performance) and with a half-slotted (to maximize energy deposition). Tests included a few selected low-power irradiations of fresh IFR-type U-Zr and U-Pu-Zr fuel pins supplemented by multiple irradiations of uranium-zirconium monitor wires ranging from low steady-state power to high-power maximal transients. This report describes the M8CAL test hardware, measurements, analysis assumptions, and methods used to deduce power coupling between the reactor and experiment fuel--including both absolute magnitudes and axial distributions. Power coupling results are reported for fresh IF fuel pins under high-power transient test conditions appropriate to the planned M8 transient test. In line with previous calibration data, measured dependence of power coupling on the specifics of each irradiation is also shown to correlate well with the in-core axial locations of the TREAT control rods. Estimates are made for maximal test fuel energy deposition capabilty in controlled transients.

  7. The German SMOS project office - CAL/VAL activities

    Science.gov (United States)

    Tittebrand, A.; Stammer, D.; Dransfeld, S.

    2009-04-01

    The SMOS remote sensing mission planned to be launched in July 2009 is part of the opportunity missions of the European Space Agency's (ESA) Earth Explorer programme. The role of the German SMOS project office (funded by the BMBF/DLR) is to inform the scientific community and the public about the current mission status as well as to promote the use of the SMOS data products within Germany. Within the framework of the project office scientific studies for the calibration and validation (cal/val) of the SMOS data are also supported. Our work includes the analysis of model-, shiptrack- and climatology determined salinity data as well as satellite, drifter and float measurements. The first comprehensive in situ data set suitable for global investigations of SSS characteristics is that provided by ARGO temperature and salinity profiles since 2000. The global ARGO float system (Gould et al., 2004) consisting of 3000 floats that provide temperature and salinity profiles, globally, from the top 2000 m every 10 days on approximately a 3 degree global grid. For our study we extract the near-surface values from ARGO salinity and temperature profiles to form a data set of near-surface salinity and temperature covering the years 2002 until 2008. All those ARGO data points are located at a depth of 0 to 5 m. Of importance for the justification of the SMOS mission is the deviation of the Argo-Measurements from climatologies, based on the bulk of the past global in situ salt content measurements, which renders the temporal condition of world oceans. Additionally a deployment of 25 drifters is planned in parallel to the SMOS launch, collecting data of temperature and salinity in the GIN SEA and the western Pacific.

  8. Aplicación de los modelos de Nikolov en la trituración por impacto del mineral zeolita del yacimiento San Andrés, Holguín, Cuba

    Directory of Open Access Journals (Sweden)

    Juan M. Menéndez-Aguado

    2008-03-01

    Full Text Available Se modeló la trituración por impacto del mineral de zeolita del yacimiento San Andrés, Holguín, utilizando los modelos de Nikolov, basados en los métodos de balance de la población de partículas. Para ello se determinó el comportamiento de la función de  clasificación y la de distribución de la fragmentación de este  mineral  utilizando una instalación de prueba a escala de laboratorio. Los resultados experimentales permitieron la selección  de los modelos que  mejor describen el comportamiento de la trituración del mineral y la determinación de sus parámetros,  lo que  resulta de gran importancia para la simulación y mejora de tales procesos a escala industrial. Los procedimientos experimentales utilizados en esta investigación pueden servir como metodología para la modelación de procesos similares.

  9. Suplementação de cloreto de potássio para frangos de corte submetidos a estresse calórico Potassium chloride supplementation in heat stressed broilers

    OpenAIRE

    Sebastião Aparecido Borges; Joji Ariki; Cyntia Ludovico Martins; Vera Maria Barbosa de Moraes

    1999-01-01

    O experimento foi realizado com objetivo de avaliar os efeitos do estresse calórico e da suplementação de cloreto de potássio (KCl) sobre o desempenho e algumas características fisiológicas de frangos de corte. Quarenta aves, no período de 42 a 49 dias, foram submetidas ao estresse calórico (16 horas a 25 ± 1ºC; duas horas com temperatura crescente; quatro horas a 35 ± 1ºC; e duas horas com temperatura decrescente até a termoneutralidade e com umidade relativa de 63,5 ± 5%), recebendo os segu...

  10. Aplicação superficial de escória, lama cal, lodos de esgoto e calcário na cultura da soja Surface application of flue dust, aqueous lime, sewage sludge and limestone on soybean crop

    OpenAIRE

    Juliano Corulli Corrêa; Leonardo Theodoro Büll; Carlos Alexandre Costa Crusciol; Marco Antonio Tecchio

    2008-01-01

    O objetivo deste trabalho foi avaliar o efeito da aplicação superficial de lodos de esgoto, lama cal, escória de aciaria e calcário sobre o estado nutricional e a produtividade da soja, em sistema plantio direto. O delineamento foi o de blocos ao acaso em arranjo fatorial 4x4+1, constituído por quatro tratamentos - resíduos de lodo de esgoto centrifugado (LC) e de biodigestor (LB), escória de aciaria (E) e lama cal (Lcal) - nas doses 0, 2, 4 e 8 Mg ha-1, mais o controle com 2 Mg ha-1 de calcá...

  11. Measurement of the ratio of branching fractions ${\\cal B}(B^0 \\to K^{\\ast 0} \\gamma)/{\\cal B}(B^0_s \\to \\phi \\gamma)$

    CERN Document Server

    Aaij, R; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Alkhazov, G; Alvarez Cartelle, P; Alves Jr, A A; Amato, S; Amhis, Y; Anderson, J; Appleby, R B; Aquines Gutierrez, O; Archilli, F; Arrabito, L; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Bachmann, S; Back, J J; Bailey, D S; Balagura, V; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S; Barter, W; Bates, A; Bauer, C; Bauer, Th; Bay, A; Bediaga, I; Belogurov, S; Belous, K; Belyaev, I; Ben-Haim, E; Benayoun, M; Bencivenni, G; Benson, S; Benton, J; Bernet, R; Bettler, M -O; van Beuzekom, M; Bien, A; Bifani, S; Bird, T; Bizzeti, A; Bjørnstad, P M; Blake, T; Blanc, F; Blanks, C; Blouw, J; Blusk, S; Bobrov, A; Bocci, V; Bondar, A; Bondar, N; Bonivento, W; Borghi, S; Borgia, A; Bowcock, T J V; Bozzi, C; Brambach, T; van den Brand, J; Bressieux, J; Brett, D; Britsch, M; Britton, T; Brook, N H; Brown, H; Büchler-Germann, A; Burducea, I; Bursche, A; Buytaert, J; Cadeddu, S; Callot, O; Calvi, M; Calvo Gomez, M; Camboni, A; Campana, P; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carson, L; Carvalho Akiba, K; Casse, G; Cattaneo, M; Cauet, Ch; Charles, M; Charpentier, Ph; Chiapolini, N; Ciba, K; Cid Vidal, X; Ciezarek, G; Clarke, P E L; Clemencic, M; Cliff, H V; Closier, J; Coca, C; Coco, V; Cogan, J; Collins, P; Comerma-Montells, A; Constantin, F; Contu, A; Cook, A; Coombes, M; Corti, G; Couturier, B; Cowan, G A; Currie, R; D'Ambrosio, C; David, P; David, P N Y; De Bonis, I; De Bruyn, K; De Capua, S; De Cian, M; De Lorenzi, F; De Miranda, J M; De Paula, L; De Simone, P; Decamp, D; Deckenhoff, M; Degaudenzi, H; Del Buono, L; Deplano, C; Derkach, D; Deschamps, O; Dettori, F; Dickens, J; Dijkstra, H; Diniz Batista, P; Domingo Bonal, F; Donleavy, S; Dordei, F; Dosil Suárez, A; Dossett, D; Dovbnya, A; Dupertuis, F; Dzhelyadin, R; Dziurda, A; Easo, S; Egede, U; Egorychev, V; Eidelman, S; van Eijk, D; Eisele, F; Eisenhardt, S; Ekelhof, R; Eklund, L; Elsasser, Ch; Elsby, D; Esperante Pereira, D; Falabella, A; Fanchini, E; Färber, C; Fardell, G; Farinelli, C; Farry, S; Fave, V; Fernandez Albor, V; Ferro-Luzzi, M; Filippov, S; Fitzpatrick, C; Fontana, M; Fontanelli, F; Forty, R; Francisco, O; Frank, M; Frei, C; Frosini, M; Furcas, S; Gallas Torreira, A; Galli, D; Gandelman, M; Gandini, P; Gao, Y; Garnier, J-C; Garofoli, J; Garra Tico, J; Garrido, L; Gascon, D; Gaspar, C; Gauld, R; Gauvin, N; Gersabeck, M; Gershon, T; Ghez, Ph; Gibson, V; Gligorov, V V; Göbel, C; Golubkov, D; Golutvin, A; Gomes, A; Gordon, H; Grabalosa Gándara, M; Graciani Diaz, R; Granado Cardoso, L A; Graugés, E; Graziani, G; Grecu, A; Greening, E; Gregson, S; Gui, B; Gushchin, E; Guz, Yu; Gys, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haines, S C; Hampson, T; Hansmann-Menzemer, S; Harji, R; Harnew, N; Harrison, J; Harrison, P F; Hartmann, T; He, J; Heijne, V; Hennessy, K; Henrard, P; Hernando Morata, J A; van Herwijnen, E; Hicks, E; Holubyev, K; Hopchev, P; Hulsbergen, W; Hunt, P; Huse, T; Huston, R S; Hutchcroft, D; Hynds, D; Iakovenko, V; Ilten, P; Imong, J; Jacobsson, R; Jaeger, A; Jahjah Hussein, M; Jans, E; Jansen, F; Jaton, P; Jean-Marie, B; Jing, F; John, M; Johnson, D; Jones, C R; Jost, B; Kaballo, M; Kandybei, S; Karacson, M; Karbach, T M; Keaveney, J; Kenyon, I R; Kerzel, U; Ketel, T; Keune, A; Khanji, B; Kim, Y M; Knecht, M; Koopman, R F; Koppenburg, P; Korolev, M; Kozlinskiy, A; Kravchuk, L; Kreplin, K; Kreps, M; Krocker, G; Krokovny, P; Kruse, F; Kruzelecki, K; Kucharczyk, M; Kvaratskheliya, T; La Thi, V N; Lacarrere, D; Lafferty, G; Lai, A; Lambert, D; Lambert, R W; Lanciotti, E; Lanfranchi, G; Langenbruch, C; Latham, T; Lazzeroni, C; Le Gac, R; van Leerdam, J; Lees, J -P; Lefèvre, R; Leflat, A; Lefrançois, J; Leroy, O; Lesiak, T; Li, L; Li Gioi, L; Lieng, M; Liles, M; Lindner, R; Linn, C; Liu, B; Liu, G; von Loeben, J; Lopes, J H; Lopez Asamar, E; Lopez-March, N; Lu, H; Luisier, J; Mac Raighne, A; Machefert, F; Machikhiliyan, I V; Maciuc, F; Maev, O; Magnin, J; Malde, S; Mamunur, R M D; Manca, G; Mancinelli, G; Mangiafave, N; Marconi, U; Märki, R; Marks, J; Martellotti, G; Martens, A; Martin, L; Martín Sánchez, A; Martinez Santos, D; Massafferri, A; Mathe, Z; Matteuzzi, C; Matveev, M; Maurice, E; Maynard, B; Mazurov, A; McGregor, G; McNulty, R; Meissner, M; Merk, M; Merkel, J; Messi, R; Miglioranzi, S; Milanes, D A; Minard, M -N; Molina Rodriguez, J; Monteil, S; Moran, D; Morawski, P; Mountain, R; Mous, I; Muheim, F; Müller, K; Muresan, R; Muryn, B; Muster, B; Musy, M; Mylroie-Smith, J; Naik, P; Nakada, T; Nandakumar, R; Nasteva, I; Nedos, M; Needham, M; Neufeld, N; Nguyen, A D; Nguyen-Mau, C; Nicol, M; Niess, V; Nikitin, N; Nikodem, T; Nomerotski, A; Novoselov, A; Oblakowska-Mucha, A; Obraztsov, V; Oggero, S; Ogilvy, S; Okhrimenko, O; Oldeman, R; Orlandea, M

    2012-01-01

    The ratio of branching fractions of the radiative $B$ decays $B^0\\to K^{*0}\\gamma$ and $B^0_s\\to \\phi\\gamma$ has been measured using $0.37\\,$fb$^{-1}$ of $pp$ collisions at a centre of mass energy of $\\sqrt{s}=7\\,$TeV, collected by the LHCb experiment. The value obtained is \\begin{equation} \\frac{{\\cal B}(B^0\\to K^{*0}\\gamma)}{{\\cal B}(B^0_s\\to \\phi\\gamma)} = 1.12 \\pm 0.08^{+0.06}_{-0.04}\\phantom{.}^{+0.09}_{-0.08},\

  12. Conformal kernel for NLO BFKL equation in ${\\cal N}$=4 SYM

    Energy Technology Data Exchange (ETDEWEB)

    Balitsky, Ian; Chirilli, Giovanni

    2009-01-01

    Using the requirement of M\\"{o}bius invariance of ${\\cal N}$=4 SYM amplitudes in the Regge limit we restore the conformal NLO BFKL kernel out of the eigenvalues known from the forward NLO BFKL result.

  13. Digital signage sobre IP

    OpenAIRE

    Casademont Filella, Albert

    2012-01-01

    Projecte que versa sobre el disseny i la implementació d'un sistema de Digital Signage (Cartelleria Digital) sobre IP, creant un gestor que permeti controlar de forma remota tot un conjunt de petits dispositius connectats a pantalles que emeten continguts multimèdia com vídeos, imatges, feeds rss...

  14. Fusion Rules of the ${\\cal W}_{p,q}$ Triplet Models

    CERN Document Server

    Wood, Simon

    2009-01-01

    In this paper we determine the fusion rules of the logarithmic ${\\calW}_{p,q}$ triplet theory and construct the Grothendieck group with subgroups for which consistent product structures can be defined. The fusion rules are then used to determine projective covers. This allows us also to write down a candidate for a modular invariant partition function. Our results demonstrate that recent work on the ${\\cal W}_{2,3}$ model generalises naturally to arbitrary (p,q).

  15. Windows Calorimeter Control (WinCal) program computer software test plan

    International Nuclear Information System (INIS)

    This document provides the information and guidelines necessary to conduct all the required testing of the Windows Calorimeter Control (WinCal) system. The strategy and essential components for testing the WinCal System Project are described in this test plan. The purpose of this test plan is to provide the customer and performing organizations with specific procedures for testing the specified system's functions

  16. A Complete Set of Firmware for the TileCal Read-Out Driver

    CERN Document Server

    Valero, A; Cuenca, C; Ferrer, A; Fullana, E; González, V; Higón, E; Poveda, J; Ruiz-Martinez, A; Salvachúa, B; Sanchís, E; Solans, C; Torres, J; Valls, J A

    2007-01-01

    TileCal is the hadronic tile calorimeter of the ATLAS experiment at LHC/CERN. The Read-Out Driver (ROD) is the main component of the TileCal back-end electronics. The ROD is a VME 64x 9u board with multiple programmable devices which requires a complete set of firmware. This paper describes the firmware and functionalities of all these programmable devices, especially the DSP Processing Units daughterboards where the data processing takes place.

  17. Efecto del consumo de frutos secos sobre el balance calórico y diferentes factores de riesgo cardiovascular

    OpenAIRE

    Casas Agustench, Patricia

    2010-01-01

    Mediante el análisis transversal del estudio PREDIMED-Nureta se confirman los hallazgos anteriores de estudios epidemiológicos en relación a la existencia de una asociación inversa entre el consumo de frutos secos (FS) y el índice de masa corporal y además, los extiende a la adiposidad abdominal, aunque esta vez en una población europea de alto riesgo cardiovascular y acostumbrada a consumir FS. Este trabajo aporta también novedades respecto a los mecanismos a través de los cuales los FS podr...

  18. «La raza más desordenada del mundo»: la dinámica del parentesco entre los calós catalanes

    Directory of Open Access Journals (Sweden)

    David Lagunas Arias

    2016-05-01

    Full Text Available La tentativa de este texto es contribuir a la etnología sobre los gitanos, y la antropología social en general, aportando reflexiones que son importantes para el presente y el futuro de los estudios sobre gitanos. Para ello realizo un análisis de la organización social y familiar de los gitanos catalanes (calós de Mataró con el fin de presentar algunas pistas de investigación y orientaciones conceptuales. El funcionamiento flexible de las redes de parentesco bilateral, las categorizaciones en la terminología de parentesco y la antroponimia, las formas de nominación individual y familiar, y los sistemas de alianza aportan conocimiento crítico respecto a principios genuinos y categorías con capacidad explicativa de la antropología. Con ello intento aclarar algunos equívocos productivos en la etnografía sobre los sistemas de organización social de los gitanos.

  19. ${\\cal{KK}}\\text{MC-hh}$: Resummed Exact ${\\cal O}(\\alpha^2L)$ EW Corrections in a Hadronic MC Event Generator

    CERN Document Server

    Jadach, S; Was, Z A; Yost, S A

    2016-01-01

    We present an improvement of the MC event generator Herwiri2, where we recall the latter MC was a prototype for the inclusion of CEEX resummed EW corrections in hadron-hadron scattering at high cms energies. In this improvement the new exact ${\\cal O}(\\alpha^2L)$ resummed EW generator ${\\cal{KK}}$ MC 4.22, featuring as it does the CEEX realization of resummation in the EW sector, is put in union with the Herwig parton shower environment. The {\\rm LHE} format of the attendant output event file means that all other conventional parton shower environments are available to the would-be user of the resulting new MC. For this reason (and others -- see the text) we henceforth refer to the new improvement of the Herwiri2 MC as ${\\cal{KK}}\\text{MC-hh}$. Since this new MC features exact ${\\cal O}(\\alpha)$ pure weak corrections from the DIZET EW library and features the CEEX and the EEX YFS-style resummation of large multiple photon effects, it provides already the concrete path to 0.05\\% precision on such effects if we...

  20. Fornecimento de cálcio para plantas de eucalyptus saligna por meio de aplicação de resíduo industrial lama de cal

    Directory of Open Access Journals (Sweden)

    Marcia Aparecida Simonete

    2013-10-01

    Full Text Available O resíduo industrial lama de cal, originado da produção de papel kraft branqueada de eucalipto, apresenta em sua composição quantidade considerável de cálcio (Ca, o que pode contribuir para reduzir o consumo de fertilizantes em plantios florestais. Com o objetivo de avaliar o efeito da lama de cal como fonte de Ca e seus efeitos sobre a disponibilidade de nutrientes e produção de matéria seca da parte aérea de plantas de eucalipto, foram conduzidos dois ensaios em vasos, em casa de vegetação, na área de pesquisa da Klabin Florestal do Paraná. Os solos utilizados foram um Neossolo Quartzarênico órtico (RQo e um Nitossolo Vermelho eutroférrico (NV. Os tratamentos constituíram-se de duas fontes de Ca, calcário dolomítico e lama de cal, e de uma testemunha, sendo identificados como: RQo testemunha, RQo calcário e RQo lama de cal; e NV testemunha, NV calcário e NV lama de cal. O delineamento experimental utilizado foi inteiramente casualizado, com quatro repetições. Para tanto, plantas de Eucalyptus saligna foram mantidas por 126 dias em vasos. Quantificou-se a produção de matéria seca e realizaram-se as análises de folhas e dos solos, por ocasião da coleta das plantas. Os dados revelaram que tanto a adição de calcário dolomítico quanto a lama de cal promoveram o fornecimento de Ca para as plantas de eucalipto, proporcionando aumentos na produção de matéria seca. Os teores de Ca e Na nas folhas de eucalipto foram acrescidos com a adição do resíduo ao solo, em comparação com o tratamento com calcário dolomítico, enquanto os teores de N, P, K e S foram semelhantes. As plantas cultivadas nos tratamentos RQo testemunha e RQo lama de cal apresentaram teores foliares de Mg abaixo da faixa considerada adequada. A adição de lama no solo elevou o pH e as concentrações de Ca e de Na, reduziu o Al trocável e não influenciou na disponibilidade de Mg, fato que pode proporcionar deficiência de Mg às plantas, em

  1. The Efficiency of Delone Coverings of the Canonical Tilings MATH {cal T}(*(A_4)) -> T^*(A4) and MATH {cal T}(*(D_6)) -> T^*(D6)

    Science.gov (United States)

    Papadopolos, Zorka; Kasner, Gerald

    This chapter is devoted to the coverings of the two quasiperiodic canonical tilings MATH {cal T}(*(A_4)) -> T^*(A4) and MATH {cal T}(*(D_6)) equiv {cal T}(*(2F)) -> T^*(D6) T^*(2F), obtained by projection from the root lattices A4 and D6, respectively. In the first major part of this chapter, in Sect. 5.2, we shall introduce a Delone covering MATH {cal C}(s_{{cal) T}(*(A_4)}) -> C^sT^*(A4) of the 2-dimensional decagonal tiling MATH {cal T}(*(A_4)) -> T^*(A4). In the second major part of this chapter, Sect. 5.3, we summarize the results related to the Delone covering of the icosahedral tiling MATH {cal T}(*(D_6)) -> T^*(D6), MATH {cal C}_{{cal T}(*(D_6)}) -> CT^*(D6) and determine the zero-, single-, and double- deckings and the resulting thickness of the covering. In the conclusions section, we give some suggestions as to how the definition of the Delone covering might be changed in order to reach some real (full) covering of the icosahedral tiling MATH {cal T}(*(D_6)) -> T^*(D6). In Section 5.2 the definition of the Delone covering is also changed in order to avoid an unnecessary large thickness of the covering.

  2. Ultrafiltros sobre ω.

    OpenAIRE

    Mancilla Hernández, Salvador

    2012-01-01

    El objetivo del presente trabajo estudiar los ideales y filtros sobre conjuntos numerables, los que comúnmente conocemos como filtros sobre ω o ideales sobre ω. Dentro de estos, nos enfocaremos en la clase de I-ultrafiltros los cuales fueron estudiados por James Baumgartner en [11]. Y dentro de esta clase de ultrafiltros, nos concentraremos cuando I es {A ⊆ ω : n∈A g(n) < ∞}, también conocido como ideal sumable con respecto a g, donde g es una sucesión de números reales no negativ...

  3. Estudio del sistema kisspeptina y su papel en el inicio de la pubertad de la lubina europea (Dicentrarchus labrax): Efecto de la restricción calórica en machos

    OpenAIRE

    Escobar Aguirre, Sebastián

    2015-01-01

    Tesi realitzada a l'Instituto de Acuicultura de Torre de la Sal (IATS - CSIC) En esta tesis doctoral se estudia el efecto de una dieta de restricción calórica de mantenimiento a largo plazo (14 meses), en machos de lubina prepúberes, sobre el inicio y desarrollo de la pubertad. Para ello se consideró el papel que los sistemas kisspeptina/GnRH juegan en el cerebro y la gónada de esta especie en términos reproductivos. Nuestros resultados evidencian que tanto las neuronas que expresan kiss1 ...

  4. Viabilidade do uso de resíduos da agroindústria coureiro-calçadista no solo Viability of using tannery and leather residues in the soil

    OpenAIRE

    Clesio Gianello; Susan Carla Domaszak; Leandro Bortolon; Cláudio Henrique Kray; Vanessa Martins

    2011-01-01

    As indústrias couro-calçadistas geram grandes quantidades de resíduos que contém cromo, produto utilizado no curtimento do couro. Para avaliar os efeitos de três aplicações de lodo de curtume (LC), resíduo de rebaixadeira (RR) e aparas de couro (AC) sobre o rendimento do sorgo (Sorghum graniferum) e rabanete (Raphanus sativus), foi conduzido um experimento em colunas de PVC, com três tipos de solo, durante o período de 1996 a 1999. Foram determinados no solo os valores de pH e o teor de cromo...

  5. Apicidin对人舌鳞癌CAL-27细胞作用的初步研究%In vitro study on the Mechanisms of Apicidin in the treatment of human tongue squamous carcinoma cell line CAL -27

    Institute of Scientific and Technical Information of China (English)

    毛立民; 赵晶; 韩斯琴高娃; 李国松; 李国林; 郭福林

    2012-01-01

    目的 探讨Apicidin对体外培养人舌鳞癌CAL-27细胞影响及作用机制.方法 体外培养人舌鳞癌CAL-27细胞,采用不同浓度的Apicidin作为实验组,并设立对照组,倒置显微镜观察细胞形态,CCK-8法检测细胞增殖、TUNEL、流式细胞仪检测Apicidin对CAL-27细胞凋亡作用.结果 Apicidin可显著抑制CAL-27细胞的生长(P<0.05),呈时间剂量依赖性.通过TUNEL法、流式细胞仪检测显示CAL-27细胞的凋亡,并且使CAL-27细胞停留在G2期.结论 Apicidin能显著抑制CAL-27的体外生长并能诱导细胞凋亡.%Objective To investigate the effects of Apicidin on human tongue squamous carcinoma cell line CAL-27 in vitro. Methods The human tongue squamous carcinoma CAL-27 cells were cultured regularly in medium with different concentration rations of Apicidin. Morphology of cells was examined by light microsope, proliferative activity of cells was assessed by CCK-8, the cell apoptoais was detected by TUN EL and FCM. Results A time dose-dependent significantly inhibited was detected in CAL-27 cells by Apicidin (P<0.05). Apicidin could induce the cell apoptosis of CAL-27 which revealed by TUNEL and FCM, and increase the proportion in G2/M phases of the cell cycle. Conclusion Apicidin significantly inhibited the growth of CAL-27 in vital and can induce apoptosis.

  6. Synthesis of LTA zeolite on corundum supports: Preliminary assessment for heavy metal removal from waste water; Sintesis de zeolita LTA sobre soportes de corindon: Evaluacion preliminar para la eliminacion de metales pesados de efluentes acuosos

    Energy Technology Data Exchange (ETDEWEB)

    Jacas, A.; Ortega, P.; Velasco, M. J.; Camblor, M. A.; Rodriguez, M. A.

    2012-11-01

    The effectiveness of materials based on LTA Zeolite as active phase, for their incorporation into systems aimed at the removal of heavy metals on waste water is evaluated in a preliminary way. This type of Zeolite with the main channel of a minimum free diameter of 0,41 nm and a low SiO{sub 2}/Al{sub 2}O{sub 3} ratio is an interesting molecular sieve, which in turn display a high ion exchange capacity. From this point of view, LTA Zeolite crystals were obtained in situ by hydrothermal synthesis and characterized by x ray diffraction (XRD) and scanning electron microscopy (SEM). We have studied the effect of hydrothermal synthesis time at 378 K. Likewise, the removal capacity of heavy metal from the active phase was evaluated in as a first step on diluted solutions of cooper salts at slightly acidic pH ({approx} 4,7). (Author) 28 refs.

  7. The EuroSprite2005 Observational Campaign: an example of training and outreach opportunities for CAL young scientists

    OpenAIRE

    O. Chanrion; Crosby, N. B.; E. Arnone; Boberg, F.; van der Velde, O.; Odzimek, A.; Mika, Á.; Enell, C.-F.; Berg, P; M. Ignaccolo; Steiner, R. J.; Laursen, S.; Neubert, T.

    2007-01-01

    International audience The four year "Coupling of Atmospheric Layers (CAL)" EU FP5 Research Training Network project studied unanswered questions related to transient luminous events (sprites, jets and elves) in the upper atmosphere. Consisting of ten scientific work-packages CAL also included intensive training and outreach programmes for the young scientists hired. Educational activities were based on the following elements: national PhD programmes, activities at CAL and other meetings, ...

  8. A multi-proxy warm season temperature reconstruction (3400 cal yr BP - 1500 cal yr BP) from the varved sediments of Lake Silvaplana

    Science.gov (United States)

    Stewart, Monique; Larocque, Isabelle; Grosjean, Martin

    2010-05-01

    A multi-proxy analysis of a nine-meter sediment core from Lake Silvaplana (1791 m a.s.l., 46°24'N, 9°42'E - 46°30'N, 9°52'E), including an innovative application of Spectrolino (380 - 730 nm) data, provides a decadal warm season temperature reconstruction (3400 cal yr BP - 1500 cal yr BP). The climate of this region has been shown to be representative of continental Europe (Trachsel et al., 2009). Consequently, we offer one of the first high-resolution multi-proxy records of European climate for this time period. The sediment of Silvaplana contains annual (‘varved') layers. Therefore, a chronology has been based on varve counts, 210Pb, 137Cs, documented flood layers and radiocarbon dates (Blass et al., 2007a;b). These varves enable high-resolution (sub-decadal) sampling and measurement of geochemical (Spectrolino, Biogenic Silica [BSi], varve thickness) and biological (chironomids) parameters. Spectrolino and BSi Flux measurements of the upper three meters of the core have been used to develop two independent calibrations-in-time and warm season (JJAS) temperature reconstructions back to AD 1177 (Spectrolino calibration period = 1864 - 1949; r = 0.92; pcorr = 0.001; BSi calibration period = 1864 - 1949; r = 0.67; pcorr = 0.03) (Trachsel et al., in review a;b; Blass et al., 2007b). A third warm season (July) temperature reconstruction to AD 1177 has been developed from chironomids (Larocque et al., 2009; Larocque-Tobler et al., 2009; accepted). Finally, Leemann and Niessen (1994), Ohlendorf et al. (1997), Nussbaumer et al. (in prep.) and Blass et al. (2007a) have shown a close relationship between local glacial activity and mean summer temperature. Here, the laboratory methods and calibrations-in-time previously used to reconstruct temperatures to AD 1177 are applied to the lower six meters of sediments (Spectrolino and varve thickness: 3400 cal yr BP - 1500 cal yr BP; BSi and chironomids: 2550 cal yr BP - 1810 cal yr BP). Both the BSi and chironomid based

  9. Aspects of screening and confinement in a topologically massive $U{\\left( 1 \\right)_{\\cal W}} \\times U{(1)_{\\cal Y}}$ Chern-Simons-Higgs theory

    CERN Document Server

    Gaete, Patricio

    2016-01-01

    By using the gauge-invariant but path-dependent, variables formalism, we consider a recently proposed topologically massive $U{\\left( 1 \\right)_{\\cal W}} \\times U{(1)_{\\cal Y}}$ Chern-Simons-Higgs theory in $2+1$ dimensions. In particular, we inspect the impact of a Chern-Simons mixing term between two Abelian gauge fields on physical observables. We pursue our investigation by analysing the model in two different situations. In the first case, where we integrate out the massive excitation and consider an effective model for the massless field, we show that the interaction energy contains a linear term leading to the confinement of static charge probes along with a screening contribution. The second situation, where the massless field can be exactly integrated over with its constraint duly taken into account, the interesting feature is that the resulting effective model describes a purely screening phase, without any trace of a confining regime.

  10. Matching the $D^6 {\\cal R}^4$ interaction at two-loops

    CERN Document Server

    D'Hoker, Eric; Pioline, Boris; Russo, Rodolfo

    2015-01-01

    The coefficient of the $D^6 {\\cal R}^4$ interaction in the low energy expansion of the two-loop four-graviton amplitude in type II superstring theory is known to be proportional to the integral of the Zhang-Kawazumi (ZK) invariant over the moduli space of genus-two Riemann surfaces. We demonstrate that the ZK invariant is an eigenfunction with eigenvalue 5 of the Laplace-Beltrami operator in the interior of moduli space. Exploiting this result, we evaluate the integral of the ZK invariant explicitly, finding agreement with the value of the two-loop $D^6 {\\cal R}^4$ interaction predicted on the basis of S-duality and supersymmetry. A review of the current understanding of the $D^{2p} {\\cal R}^4$ interactions in type II superstring theory compactified on a torus $T^d$ with $p \\leq 3$ and $d \\leq 4$ is included.

  11. L’Observatoire numérique Nouvelle-Calédonie

    Directory of Open Access Journals (Sweden)

    Charlotte Ullmann

    2013-06-01

    Full Text Available Ses missions consistent à observer le développement numérique et favoriser l’animation territoriale des acteurs en Nouvelle-Calédonie. Parrainée par l’association calédonienne pour les technologies de l’information et de la communication (ACTIC et le ministère en charge de l’économie numérique du Gouvernement de Nouvelle-Calédonie nommé depuis mai 2009, une mission d’étude a été menée depuis juin 2010 pour définir les contours d’un Observatoire numérique. A travers cette étude, il s’agissai...

  12. Anomalies, counterterms and the ${\\cal N} =0$ Polchinski-Strassler solutions

    CERN Document Server

    Taylor-Robinson, M M

    2001-01-01

    The singularity structure of many IIB supergravity solutions asymptotic to $AdS_5 \\times S^5$ becomes clearer when one considers the full ten dimensional solution rather than the dimensionally reduced solution of gauged supergravity. It has been shown that all divergences in the gravitational action of the dimensionally reduced spacetime can be removed by the addition of local counterterms on the boundary. Here we attempt to formulate the counterterm action directly in ten dimensions for a particular class of solutions, the ${\\cal N} = 0$ Polchinski-Strassler solutions, which are dual to an ${\\cal N} =4$ SYM theory perturbed by mass terms for all scalars and spinors. This involves constructing the solution perturbatively near the boundary. There is a contribution to the Weyl anomaly from the mass terms (which break the classical conformal invariance of the action). The coefficient of this anomaly is reproduced by a free field calculation indicating a non-renormalisation theorem inherited from the ${\\cal N} =4...

  13. The Framework Model of Supply-Chain Process in CALS Environment

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    E-supply chain is the trend of the supply chain ma na gement. However, building E-supply chain depends on business process improvemen t and re-engineering, which becomes one of the important aspects in supply chai n management. However, the supply chain process re-engineering and improvement is constrained because of lack of integrating operation framework and standards based on information management. We find that the idea of CALS origins from DoD of USA can solve the problems very well. CALS is the abb...

  14. L’élevage de la crevette bleue en Nouvelle -Calédonie

    OpenAIRE

    Della Patrona, Luc; Brun, Pierre; Peignon, Jean-marie

    2009-01-01

    Ce poster présente l'ouvrage homonyme qui représente une somme de connaissances considérable sur l’élevage de la crevette bleue Litopenaeus stylirostris en Nouvelle-Calédonie. Les différents aspects de l’élevage y sont détaillés avec de nombreux exemples très concrets et une iconographie abondante, 320 pages,101 figures, 49 photos, 85 tableaux, près de 500 références bibliographiques. Cet ouvrage satisfera naturellement les professionnels de la crevetticulture en Nouvelle-Calédonie et au delà...

  15. QIE12: A New High-Performance ASIC for the ATLAS TileCal Upgrade

    CERN Document Server

    Drake, Gary; The ATLAS collaboration; Proudfoot, James; Stanek, Robert; Chekanov, Sergei

    2015-01-01

    We present results on the QIE12, a custom ASIC, being developed for the ATLAS TileCal Phase 2 Upgrade. The design features 1.5 fC sensitivity, more than 17 bits of dynamic range with logarithmic response, and an on-chip TDC with one nanosecond resolution. It has a programmable shunt output for monitoring the integrated current. The device operates with no dead-time at 40 MHz, making it ideal for calorimetry at the LHC. We present bench measurements and integration studies that characterize the performance, radiation tolerance measurements, and the design for the ATLAS TileCal detector for the Phase 2 Upgrade.

  16. Estudi constructiu i proposta de rehabilitació de la Masia Cal Mata ( Albinyana )

    OpenAIRE

    Muñoz Aragón, Sergi; Solé Alcàcer, Marc

    2013-01-01

    L’objectiu d’aquest treball és explicar l’evolució històrica de la masia Cal Mata i del seu entorn, analitzar quin és el seu estat actual, realitzar l’aixecament gràfic inexistent fins ara i realitzar una proposta de rehabilitació encarada a un canvi d’ús de l’actual masia a una masia rural. La masia Cal Mata ha estat dividida en dues zones. Una zona més antiga, que correspondria a la part oest, on hi trobem a la planta baixa els trasters per guardar material i a la planta pis les...

  17. Spatial structure of the 8200 cal yr BP event in northern Europe

    OpenAIRE

    Seppä, H.; H. J. B. Birks; Giesecke, T.; D. Hammarlund; Alenius, T.; Antonsson, K.; Bjune, A.E.; Heikkilä, M.; MacDonald, G. M.; Ojala, A. E. K.; Telford, R J; Veski, S.

    2007-01-01

    A synthesis of well-dated high-resolution pollen records suggests a spatial structure in the 8200 cal yr BP event in northern Europe. The temperate, thermophilous tree taxa, especially Corylus, Ulmus, and Alnus, decline abruptly between 8300 and 8000 cal yr BP at most sites located south of 61° N, whereas there is no clear change in pollen values at the sites located in the North-European tree-line region. Pollen-based quantitat...

  18. High temporal Resolution Fire History in Eastern Africa: the Last 16 kyr cal. BP

    Science.gov (United States)

    Vanniere, B.; Carcaillet, C.; Garcin, Y.; Vullien, A.; Williamson, D.

    2004-12-01

    Charcoal series, based on a high temporal resolution analysis, at Lake Massoko (9°20' S, 33° 45' E, 770 a.s.l., SW Tanzania) reveals numerous changes of fire regime over the last 16 kyr cal BP. Data are based on the tallying of charcoal from 700 continuous 1 cm thick samples along a 7m long sequence. The structure of charcoal particles is well preserved with an length:width ratio superior to 5; this appears to testify to the local provenance of the material studied and to the rapid transport of particles to the lake. The majority of particles belongs to herbaceous cuticles produced by savanna or bush fires. Time control is supported by 14 radiocarbon dates. Mean time resolution per sample of 17 yr provides the first long detailed biomass burning record in Africa. This record evidences frequent fires events during the last 16 kyr, indicating that fire is a key component of east African ecosystems since, at least, the last glacial stage up to present. From 16 to 12 kyr cal BP, the charcoal influx into the lake is low except during two specific sequences, between 13.5-12.5 kyr cal BP and 14.5-14 kyr cal BP. These may correspond to more arid or more biomass-available phases. Around 10 kyr cal BP, at the early Holocene a greater influx of charcoal is recorded in the lake, probably as a result of a high fire regime likely triggered by severe droughts. Between 8.3 and 1.7 kyr cal BP, the charcoal influx displays a cyclic fire history of ca. 500 yr. Low fire regime, between 3.5-2.5, 5.5-5 and 7.5-7 kyr cal BP, correspond to wetter periods. About 12 sequences of fire increase and decrease are highlighted, which appears to support a high climatic variability during the middle-Holocene. After 1.7 kyr BP, there is a long lasting increase of charcoal influx into the lake, as observed by black carbon analysis (Thevenon et al., 2003). This particular period, without analog since 16 kyr cal BP, is consistent with the development of Iron Age settlements in the region, slash

  19. Altimetry, bathymetry and geoid variations at the Gavdos permanent Cal/Val facility

    DEFF Research Database (Denmark)

    Mertikas, Stelios P.; Daskalakis, Antonis; Tziavos, Ilias N.;

    2013-01-01

    The aim of this work has been to examine the relationship of steep bathymetry in the coastal areas around the permanent Cal/Val facility of Gavdos, and their influence on the produced calibration values for the Jason-2 satellite altimeter. The paper describes how changes in seafloor topography...... calibration data and careful data analysis, certain features and variations, with permanent signatures at some locations south of Gavdos, have been found in the altimeter bias values. Causes of these variations have been interpreted. Some of these features, for example, at 12km south of the Cal/Val site seem...

  20. Todo sobre el neobarroco

    Directory of Open Access Journals (Sweden)

    Arturo Carrera

    2007-07-01

    Full Text Available Lo que hemos escuchado y atendido hasta aquí, hoy, ayer, sobre todo en la propuesta poética esbozada por Sergio Raimondi en su ensayo sobre Aldo Oliva, demuestra que las singularidades, su pasión, anulan subrepticiamente las nominaciones.Anoche en la televisión una orquesta sinfónica y un coro numeroso. Súbitamente, me hubiera gustado ser uno de esos intérpretes solitarios para sí, a pesar de la armonía, anónimos, a pesar del brillo sonoro… un violín, un triángulo… apenas… tres grillos… como ...

  1. Inferencias sobre Grafos

    OpenAIRE

    Sira M. Allende; Carlos N. Bouza

    2002-01-01

    El estudio de un juego puede ser modelado asumiendo que solo algunas partidas son observadas. Entonces el árbol del juego debe ser estimado utilizando información muestral. Similarmente ocurre al obtener información sobre el comportamiento de las decisiones tomadas por individuos muestreados sobre un árbol de decisión teórico. Al considerar una medida de probabilidad que caracterice el comportamiento de redes aleatorias se puede obtener un estimado del árbol asociado. Este problema es el anal...

  2. Mitos sobre agroecologia.

    OpenAIRE

    Canuto, João Carlos

    2011-01-01

    O presente ensaio vem a discutir alguns aspectos do discurso sobre a Agroecologia, procurando evidenciar contradições do senso comum, advindas seja de parte da comunidade leiga, dos meios de comunicação ou da comunidade científica. Coloca em debate alguns mitos sobre os sistemas agroecológicos, tais como: que sejam tecnologicamente retrógrados, de baixa produtividade, exigentes em mão-de-obra, economicamente inviáveis e “puramente ideológicos”.

  3. The location of cemento enamel junction for CAL measurement: A clinical crisis

    Directory of Open Access Journals (Sweden)

    Vandana K

    2009-01-01

    Full Text Available Background: We face various problems while measuring the Clinical attachment level (CAL from Cemento-enamel junction (CEJ. This study aims to record and compare the CEJ location measurements using a xed reference point (FRP [Custom made stent] before and after ap elevation. Materials and Methods: A custom made stent and UNC-15 probe were used. Recording of CEJ location was made using a UNC-15 (Hu-Friedy probe, before (close CEJ and after (Open CEJ the reflection of the flap from the lower edge of the stent in those subjects who were indicated for flap surgery, at baseline. Results: We used statistical analysis involving intra-group comparison done by Paired-′t′ test. The close and the open CEJ measurements demonstrated a, statistically, non-significant difference. The equi-measurements of close and open CEJ numerical data were remarkably lower than the under and overestimation of measurements. Thus, despite certain disadvantages of stent, the FRP provides a simple solution for CAL measurement. Conclusion: The results of this study confirms the objective of the study and strongly suggests that CAL measurements done without FRP is subjected to great variation and the diagnostic and prognostic interpretation of CAL should be viewed seriously in periodontics.

  4. Study of TileCal Scintillators Irradiation using the Minimum Bias Integrators

    CERN Document Server

    Fischer, Cora; The ATLAS collaboration

    2016-01-01

    This Talk is about the Minimum Bias Integrator System used in the ATLAS TileCal to monitor the instantaneous luminosity and detector response. Studies concerning these two topics are presented for 2012 and 2015 data periods. An emphasis is placed on the study of scintillator irradiation.

  5. Setup, tests and results for the ATLAS TileCal Read Out Driver production

    CERN Document Server

    Valero, Alberto; Castillo, V; Cuenca, C; Ferrer, A; Fullana, E; González, V; Higón, E; Munar, A; Poveda, J; Ruiz-Martínez, A; Salvachúa, B; Sanchís, E; Solans, C; Soret, J; Torres, J; Valls, J A

    2007-01-01

    In this paper we describe the performance and test results of the production of the 38 ATLAS TileCal Read Out Drivers (RODs). We first describe the basic hardware specifications and firmware functionality of the modules, the test-bench setup used for production and the test procedure to qualify the boards. We then finally show and discuss the performance results.

  6. Nonlinear modal interactions in parity-time (${\\cal PT}$) symmetric lasers

    CERN Document Server

    Ge, Li

    2016-01-01

    Parity-time ($\\cal PT$) symmetric lasers have attracted considerable attention lately due to their promising applications and intriguing properties, such as free spectral range doubling and single-mode lasing. In this work we discuss nonlinear modal interactions in these laser systems under steady state conditions, and we demonstrate that several gain clamping scenarios can occur for lasing operation in the $\\cal PT$-symmetric and $\\cal PT$-broken phases. In particular, we show that, depending on the system's design and the external pump profile, its operation in the nonlinear regime falls into two different categories: in one the system is frozen in the $\\cal PT$ phase space as the applied gain increases, while in the other the system is pulled towards its exceptional point. These features are first illustrated by a coupled mode formalism and later verified by employing the Steady-state Ab-initio Laser Theory (SALT). Our findings shine light on the robustness of single-mode operation in these lasers against ...

  7. Windows Calorimeter Control (WinCal) program computer software configuration management plan

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-26

    This document describes the system configuration management activities performed in support of the Windows Calorimeter Control (WinCal) system, in accordance with Site procedures based on Institute of Electrical and Electronic Engineers (IEEE) Standard 828-1990, Standard for Software Configuration Management Plans (IEEE 1990) and IEEE Standard 1042-1987, Guide to Software Configuration Management (IEEE 1987).

  8. New Fuzzy Extra Dimensions from $SU({\\cal N})$ Gauge Theories

    CERN Document Server

    Kurkcuoglu, Seckin

    2015-01-01

    We start with an $SU(\\cal {N})$ Yang-Mills theory on a manifold ${\\cal M}$, suitably coupled to two distinct set of scalar fields in the adjoint representation of $SU({\\cal N})$, which are forming a doublet and a triplet, respectively under a global $SU(2)$ symmetry. We show that a direct sum of fuzzy spheres $S_F^{2 \\, Int} := S_F^2(\\ell) \\oplus S_F^2 (\\ell) \\oplus S_F^2 \\left ( \\ell + \\frac{1}{2} \\right ) \\oplus S_F^2 \\left ( \\ell - \\frac{1}{2} \\right )$ emerges as the vacuum solution after the spontaneous breaking of the gauge symmetry and lay the way for us to interpret the spontaneously broken model as a $U(n)$ gauge theory over ${\\cal M} \\times S_F^{2 \\, Int}$. Focusing on a $U(2)$ gauge theory we present complete parameterizations of the $SU(2)$-equivariant, scalar, spinor and vector fields characterizing the effective low energy features of this model. Next, we direct our attention to the monopole bundles $S_F^{2 \\, \\pm} := S_F^2 (\\ell) \\oplus S_F^2 \\left ( \\ell \\mp \\frac{1}{2} \\right )$ over $S_F^2 (...

  9. Essential norms of weighted composition operators on the space ${\\cal H}^\\infty$ of Dirichlet series.

    OpenAIRE

    Lefèvre, Pascal

    2009-01-01

    International audience We estimate the essential norm of a weighted composition operator relatively to the class of Dunford-Pettis operators or the class of weakly compact operators, on the space ${\\cal H}^\\infty$ of Dirichlet series. As particular cases, we obtain the precise value of the generalized essential norm of a composition operator and of a multiplication operator.

  10. Proposed Cal Grant Cuts Would Hit Community College Students Hardest. Keeping California's Promise. Issue Brief

    Science.gov (United States)

    Cochrane, Deborah Frankle

    2008-01-01

    Many more community college students than students at California's four-year colleges would lose financial aid under Governor Schwarzenegger's proposed budget for 2009. This issue brief finds that the budget-cutting plan would eliminate new Cal Grant awards for 45 percent of community college students who would have received them, compared to five…

  11. Environmental change in the Limfjord, Denmark (ca 7500-1500 cal yrs BP): A multiproxy study

    DEFF Research Database (Denmark)

    Lewis, J. P.; Ryves, D.B.; Rasmussen, P.;

    2013-01-01

    , foraminifera, sedimentary pigments, C and O stable isotopes and plant macrofossils) has been adopted to assess environmental change over the period ca 7500–1500 cal yrs BP at Kilen, a coastal fjord (before AD 1856) situated in the Western Limfjord. A diatom-based salinity transfer function based on a pan...

  12. The Evolution and Redefining of "CAL": A Reflection on the Interplay of Theory and Practice

    Science.gov (United States)

    Hartley, R.

    2010-01-01

    This article comments on how the core idea of the computer as an assistant to teaching and learning became reconfigured through changing technologies, pedagogies and educational cultures. Early influential researchers in computer assisted learning (CAL) made strong but differing links to theories and representations of learning, showing a…

  13. The TileCal Energy Reconstruction for Collision Data Using the Matched Filter

    CERN Document Server

    Peralva, B S M; The ATLAS collaboration

    2013-01-01

    The Tile Barrel Calorimeter (TileCal) is the central section of the hadronic calorimeter of ATLAS at LHC. It is divided in a central barrel and two extended barrels, where each part is formed by 64 modules in order to complete the entire cylinder. The central barrel modules are divided in 46 cells each, while the extended barrels modules are divided in 14 cells. The energy deposited in each cell is read out by two electronic channels for redundancy and the analog pulse is conditioned by a shaper circuit. Therefore, TileCal comprises more than 10,000 readout channels. The energy is estimated for each channel by reconstructing the amplitude of the digitized pulse sampled every 25 ns. This work presents the performance of an alternative algorithm for TileCal energy reconstruction, namely the TileCal Matched Filter (MF). The performance of the MF method is compared to the currently implemented algorithm (OF2) using collision data acquired in 2010 during LHC operation period. The results showed that the MF present...

  14. X-ray Pulsations in the Supersoft X-ray Binary CAL 83

    OpenAIRE

    Schmidtke, P. C.; Cowley, A. P.

    2005-01-01

    X-ray data reveal that the supersoft X-ray binary CAL 83 exhibits 38.4 minute pulsations at some epochs. These X-ray variations are similar to those found in some novae and are likely to be caused by nonradial pulsations the white dwarf. This is the first detection of pulsations in a classical supersoft X-ray binary.

  15. A double copy for ${\\cal N}=2$ supergravity: a linearised tale told on-shell

    CERN Document Server

    Cardoso, G L; Nampuri, Suresh

    2016-01-01

    We construct the on-shell double copy for linearised four-dimensional ${\\cal N}=2$ supergravity coupled to one vector multiplet with a quadratic prepotential. We apply this dictionary to the weak-field approximation of dyonic BPS black holes in this theory.

  16. 78 FR 1252 - CalAmp Wireless Networks Corporation (CWNC), Satellite Products Division, Including On-Site...

    Science.gov (United States)

    2013-01-08

    ... December 13, 2011 (76 FR 77556). At the request of the State of Minnesota, the Department reviewed the... Employment and Training Administration CalAmp Wireless Networks Corporation (CWNC), Satellite Products Division, Including On-Site Leased Workers From Select Staffing, Oxnard, CA; CalAmp Wireless...

  17. 76 FR 70520 - Rovac Corp., RS Group of Companies, Inc., Rymer Foods, Inc. Stratus Services Group, Inc., Sun Cal...

    Science.gov (United States)

    2011-11-14

    ... COMMISSION Rovac Corp., RS Group of Companies, Inc., Rymer Foods, Inc. Stratus Services Group, Inc., Sun Cal Energy, Inc., Sun Motor International, Inc., Surebet Casinos, Inc., and Swiss Medica, Inc.; Order of... Sun Cal Energy, Inc. because it has not filed any periodic reports since the period ended March...

  18. The quantitative reconstruction of the palaeoclimate between 5200 and 4300 cal yr BP in the Tianshui Basin, NW China

    Directory of Open Access Journals (Sweden)

    N. Sun

    2012-03-01

    Full Text Available The quantitative reconstruction of the palaeoclimate is a prerequisite for understanding climate processes at time scales of centuries and millennia. Here, the coexistence approach (CA was applied to reconstruct climatic factors quantitatively based on the fossil charcoal records between 5200 and 4300 cal yr BP in the Tianshui Basin, NW China. The CA analysis showed that the climate of the Tianshui Basin belonged to the northern subtropical zone between 5200 and 4300 cal yr BP. The mean annual temperature (MAT was approximately 13.2 °C, and the mean annual precipitation (MAP was approximately 778 mm between 5200 and 4900 cal yr BP. The MAT was approximately 13.2 °C, and the MAP was approximately 688 mm between 4800 and 4300 cal yr BP. The MAT was approximately 2.2 °C higher than today, and the MAP was approximately 280 mm higher than today from 5200 to 4900 cal yr BP. The MAT was also approximately 2.2 °C higher than today from 4800 to 4300 cal yr BP, while the MAP was approximately 196 mm higher than today. No abrupt cold event occurred between 5200 and 4300 cal yr BP; however, a drought tendency appeared after around 4800 cal yr BP.

  19. Apoptosis of human tongue squamous cell carcinoma cell (CAL-27 induced by Lactobacillus sp. A-2 metabolites

    Directory of Open Access Journals (Sweden)

    Guoliang ZHANG

    2014-07-01

    Full Text Available Objective: To study the effect of Lactobacillus sp. A-2 metabolites on viability of CAL-27 cells and apoptosis in CAL-27 cells. Methods: Lactobacillus sp. A-2 metabolites 1 and 2 (LM1 and LM2 were obtained by culturing Lactobacillus sp. A-2 in reconstituted whey medium and whey-inulin medium; the cultured CAL-27 cells were treated with different concentrations of LM1 and LM2 (0, 3, 6, 12, 24, 48 mg/mL and assayed by methyl thiazolyltetrazolium (MTT method; morphological changes of apoptotic cell were observed under fluorescence microscopy by acridine orange (Ao fluorescent staining; flow cytometry method (FCM and agarose gel electrophoresis were used to detect the apoptosis of CAL-27 cells treated LM1 and LM2. Results: The different concentrations of LM1 and LM2 could restrain the growth of CAL-27 cells, and in a dose-dependent manner; the apoptosis of CAL-27 cells was obviously induced and was time-dependent. Conclusions: Viability of CAL-27 cells was inhibited by Lactobacillus sp. A-2 metabolites; Lactobacillus sp. A-2 metabolites could induce CAL-27 cells apoptosis; study on the bioactive compounds in the Lactobacillus sp. A-2 metabolites and their molecular mechanism is in progress.

  20. CAMPARE and Cal-Bridge: Two Institutional Networks Increasing Diversity in Astronomy

    Science.gov (United States)

    Rudolph, Alexander L.; Impey, Chris David; Smecker-Hane, Tammy A.

    2016-01-01

    We describe two programs, CAMPARE and Cal-Bridge, with the common mission of increasing participation of groups traditionally underrepresented in astronomy, through summer research opportunities, in the case of CAMPARE, scholarships in the case of Cal-Bridge, and significant mentoring in both programs, leading to an increase in their numbers successfully pursuing a PhD in the field.In 6 years, the CAMPARE program has sent 62 students, >85% from underrepresented groups, to conduct summer research at one of twelve major research institutions in California, Arizona, and Wyoming. The graduation rate among CAMPARE scholars is 97%, and of the 37 CAMPARE scholars who have graduated with a Bachelor's degree, almost 60% (21) have completed or are pursuing graduate education in astronomy or a related field, at institutions including UCLA, USC, UC Riverside, Stanford, Univ. of Rochester, Georgia Tech, Kent State, Indiana Univ., Univ. of Oregon, Syracuse, and the Fisk-Vanderbilt Master's-to-PhD program. The Cal-Bridge program is a CSU-UC Bridge program comprised of faculty form 5 University of California (UC), 8 California State University (CSU), and 8 California Community College (CCC) campuses in Southern California. Cal-Bridge provides much deeper mentoring and professional development experiences over the last two years of undergraduate and first year of graduate school to students from this diverse network of higher education institutions. Cal-Bridge Scholars benefit from financial support, intensive, joint mentoring by CSU and UC faculty, professional development workshops, and exposure to research opportunities at the participating UC campuses.

  1. Evaluación de la eficiencia de una batería de filtros empacados en zeolita en la remoción de metales pesados presentes en un licor mixto bajo condiciones de laboratorio Evaluation of efficiency of a filter battery packaging zeolite in the removal of heavy metals in a mixed liquor under laboratory conditions

    Directory of Open Access Journals (Sweden)

    Diana Rocío Acevedo Cifuentes

    2011-01-01

    Full Text Available En este artículo se muestran resultados de investigación obtenidos en la remoción de los metales pesados, plomo, níquel, cromo, cadmio y mercurio, presentes en una solución compuesta por licor mixto proveniente de la planta de tratamiento de aguas residuales de San Fernando y una solución preparada con metales pesados con una concentración conocida, mediante el uso de una batería de filtros empacados en zeolita clinoptilolita. La experimentación se desarrolló bajo condiciones controladas de caudal y pH, a temperatura ambiente. Se encontró que la eficiencia de los filtros bajo las condiciones específicas de diseño es significativamente alta en la remoción de los metales pesados evaluados en la solución acuosa. Se encontró, además, que sin importar el valor de la concentración inicial, se obtuvo una remoción importante en los contaminantes luego de pasar por los filtros con una mayor eficiencia en la remoción del mercurio.This article shows the research results on the removal of five heavy metals (lead, nickel, chromium, cadmium and mercury present in a liquor made of a mixture of wastewater from San Fernando wastewater treatment plant and a solution prepared with known concentrations of heavy metals, using a series of batery filters packed with zeolita clinoptilolita. The experiments were run under controlled conditions of flow and pH, at room temperature. It was found that the removal efficiency was significantly high under the specified design conditions; also, it was found an important removal of the contaminants after passing through the filters, independently of the initial concentration, with the highest observed removal for mercury.

  2. Inferencias sobre Grafos

    Directory of Open Access Journals (Sweden)

    Sira M. Allende

    2002-05-01

    Full Text Available El estudio de un juego puede ser modelado asumiendo que solo algunas partidas son observadas. Entonces el árbol del juego debe ser estimado utilizando información muestral. Similarmente ocurre al obtener información sobre el comportamiento de las decisiones tomadas por individuos muestreados sobre un árbol de decisión teórico. Al considerar una medida de probabilidad que caracterice el comportamiento de redes aleatorias se puede obtener un estimado del árbol asociado. Este problema es el analizado en este trabajo. Algunos resultados experimentales obtenidos usando Recocido Simulado ilustran el procedimiento. Su papel en el estudio de modelos económicos y de mercadeo es discutido.

  3. Estudios sobre Borges

    OpenAIRE

    Facultad de Humanidades y Ciencias de la Educación

    1991-01-01

    Contenidos de la obra: De Barthes a Pierre Menard | José Luis De Diego Pierre Menard, autor del Quijote: De la poligrafía al fraude | Andrea Cucatto Homenaje a Roberto Arlt: La otra cara de la moneda | Fabio Espósito Emma a través del espejo: Una lectura de Emma Zunz | Graciela Beatriz Goldchluk Sobre el concepto de verdad en Borges | Sergio Pastormerlo

  4. O USO DE CLORETO DE CÁLCIO E DA CAL PARA O TRATAMENTO PÓS-COLHEITA DE PODRIDÕES EM MAÇÃS

    Directory of Open Access Journals (Sweden)

    BRACKMANN AURI

    2001-01-01

    Full Text Available Foi desenvolvido um experimento para avaliar a influência da contaminação da água e a eficiência de produtos químicos na lavagem de maçãs cvs. Gala e Fuji sobre a ocorrência de podridão em frutos com ferimentos. O delineamento experimental foi inteiramente casualizado, com quatro repetições por cultivar e unidade experimental composta por 25 frutos. Os tratamentos foram: a Testemunha (seca; b Testemunha em água; c Inoculação com água com esporos; d Inoculação em água com esporos + 30 horas em temperatura ambiente; e 30 horas em temperatura ambiente + inoculação em água com esporos; f Cal Ca(OH2 (1,5%; g CaCl2 (1,5%. Inicialmente, todos os frutos sofreram quatro lesões de 0,2cm de diâmetro por 0,5cm de profundidade na região equatorial. Os frutos foram inoculados com uma solução de esporos de Penicillium sp. Após aplicação dos respectivos tratamentos, os frutos foram armazenados sob refrigeração a 0ºC para a 'Gala' e -0,5ºC para a 'Fuji'. As avaliações de incidência de podridão foram realizadas na abertura das câmaras (60 dias e após 7 e 14 dias de exposição a 20ºC. Não houve ocorrência de podridão aos 60 dias para os frutos tratados com cal, não diferindo estatisticamente dos tratados com CaCl2. Aos sete e 14 dias, a cal mostrou-se mais eficiente que o CaCl2 na cv. Gala. Os frutos que ficaram 30 horas em temperatura ambiente antes de serem inoculados com uma solução de esporos, apresentaram menor incidência de podridão que os inoculados antes da exposição por 30 horas à temperatura ambiente, indicando que, após a inoculação, o fungo necessita de temperatura adequada para causar podridão.

  5. Biodiesel production from different algal oil using immobilized pure lipase and tailor made rPichia pastoris with Cal A and Cal B genes.

    Science.gov (United States)

    Bharathiraja, B; Ranjith Kumar, R; PraveenKumar, R; Chakravarthy, M; Yogendran, D; Jayamuthunagai, J

    2016-08-01

    In this investigation, oil extraction was performed in marine macroalgae Gracilaria edulis, Enteromorpha compressa and Ulva lactuca. The algal biomass was characterized by Scanning Electron Microscopy and Fourier Transform-Infra Red Spectroscopy. Six different pre-treatment methods were carried out to evaluate the best method for maximum oil extraction. Optimization of extraction parameters were performed and high oil yield was obtained at temperature 55°C, time 150min, particle size 0.10mm, solvent-to-solid ratio 6:1 and agitation rate 500rpm. After optimization, 9.5%, 12.18% and 10.50 (g/g) of oil extraction yield was achieved from the respective algal biomass. The rate constant for extraction was obtained as first order kinetics, by differential method. Stable intracellular Cal A and Cal B lipase producing recombinant Pichia pastoris was constructed and used as biocatalyst for biodiesel production. Comparative analysis of lipase activity and biodiesel yield was made with immobilized Candida antarctica lipase. PMID:26906444

  6. Ubiquitination and Degradation of CFTR by the E3 Ubiquitin Ligase MARCH2 through Its Association with Adaptor Proteins CAL and STX6

    OpenAIRE

    Jie Cheng; William Guggino

    2013-01-01

    Golgi-localized cystic fibrosis transmembrane conductance regulator (CFTR)-associated ligand (CAL) and syntaxin 6 (STX6) regulate the abundance of mature, post-ER CFTR by forming a CAL/STX6/CFTR complex (CAL complex) that promotes CFTR degradation in lysosomes. However, the molecular mechanism underlying this degradation is unknown. Here we investigated the interaction of a Golgi-localized, membrane-associated RING-CH E3 ubiquitin ligase, MARCH2, with the CAL complex and the consequent bindin...

  7. Características de fermentação da silagem de cana-de-açúcar tratada com uréia, zeólita, inoculante bacteriano e inoculante bacteriano/enzimático Fermentation of sugarcane silage treated with urea, zeolita, bacteria inoculant and bacteria/enzymatic inoculant

    Directory of Open Access Journals (Sweden)

    D.A. Ferreira

    2007-04-01

    Full Text Available Estudaram-se as características de fermentação da cana-de-açúcar (RB72454 submetida aos tratamentos: controle; 0,5% uréia; 0,5% zeólita; 0,5% uréia e 0,5% zeólita; inoculante bacteriano comercial; inoculante bacteriano/enzimático comercial. O material ensilado foi aberto com um, três, cinco, sete, 14, 28 e 56 dias de fermentação e analisado quanto aos teores de MS, carboidratos solúveis, PB, NNH3/NT, pH, FDN, FDA, celulose, hemicelulose, lignina e DIVMS. Observou-se redução do conteúdo de MS em todas as silagens, com média de 21,1%, em relação ao material original (28,7%. A concentração média de carboidratos solúveis no material original foi de 19,7% e, após 56 dias de fermentação, foi de 0,92%. A concentração de PB das silagens testemunha e tratadas com zeólita, inoculante comercial bacteriano e inoculante comercial bacteriano/enzimático variou entre 2,1% e 3,1% e naquelas que receberam uréia e uréia+zeólita foi de 8,4%. Os teores de NNH3/NT foram inferiores a 10% nas silagens testemunha e tratadas com zeólita, inoculante bacteriano comercial e inoculante bacteriano/enzimático comercial, entretanto foi de 30,4% e 31,1% nas silagens com uréia e uréia+zeólita, respectivamente. No primeiro dia de fermentação, o pH apresentou média de 3,75. Após 56 dias de fermentação, as concentrações de FDN, FDA, celulose e hemicelulose aumentaram, apresentando média entre os tratamentos de 68,6%, 39,6%, 34,5% e 29,1%, respectivamente. O coeficiente de DIVMS reduziu-se com a ensilagem, em todos os tratamentos avaliados, sendo de 57,6% no material original e média de 47,6% nas silagens.The characteristics of fermentation of sugarcane (RB72454 submitted to the treatments control; 0.5% urea; 0.5% zeolita; 0.5% urea and 0.5% zeolita; commercial bacterial inoculant and commercial bacterial/enzymatic inoculant were studied. The material stored in silos was opened on 1, 3, 5, 7, 14, 28 and 56 days of fermentation and was

  8. CalPFl4030 negatively modulates intracellular ATP levels during the development of azole resistance in Candida albicans

    Institute of Scientific and Technical Information of China (English)

    Xin-ming JIA; Ying WANG; Jun-dong ZHANG; Hong-yue TAN; Yuan-yingJIANG; Jun GU

    2011-01-01

    Aim:Widespread and repeated use of azoles, particularly fiuconazole, has led to the rapid development of azole resistance in Candida albicans.We investigated the role of CalPF14030 during the development of azole resistance in C albicans.Methods:The expression of CalPF14030 was measured by quantitative RT-PCR, and CalPF14030 was disrupted by the hisG-URA3-hisG(URA-blaster)method.The sensitivity of C albicans to azoles was examined using a spot assay, and the intracellular ATP concentrations were measured by a luminometer.Results:CalPF14030 expression in C albicans was up-regulated by Ca2+ in a calcineurin-dependent manner, and the protein was overexpressed during the stepwise acquisition of azole resistance.However,disruption or ectopic overexpression of CalPFl4030 did not affect the sensitivity of C albicans to azoles.Finally,we demonstrated that disruption of CalPFll4030 significantly increased intracellular ATP levels.and overexpression significantly decreased intracellular ATP levels jn C albicans.Conclusion:CalPF14030 may negatively modulate intracellular ATP levels during the development of azole resistance in C albicans.

  9. Efecto del Glicolit sobre la Cinética Absorción de Glucosa Marcada con 14c en Ratas Wistar.

    Directory of Open Access Journals (Sweden)

    Andrés S. Fleitas Estévez

    2005-01-01

    Full Text Available La diabetes mellitus es un trastorno metabólico crónico cuya incidencia se ha ido incrementando en todo el mundo. Los antihiperglicemiantes son drogas que se utilizan en el control metabólico del paciente, resulta importante para nuestros pacientes diabéticos la obtención de un fármaco de este tipo que contribuya a controlar los niveles de glucosa en sangre en los periodos post pandriales. Nuestro grupo de trabajo está desarrollando un producto derivado de la zeolitas naturales (FZ que hemos nombrado Glicolit; en estudios anteriores ha mostrado efectos sobre la absorción intestinal de glucosa, retardando la absorción y los incrementos en sangre después de los períodos postpandriales, este fármaco al mismo tiempo le permite a estos sujetos mejorar la calidad de vida y retardar las complicaciones propias de esta enfermedad. Se estudiaron 15 ratas, a 6 de ellas se les administró un preparado de glucosa marcada con 14C, en ayunas (grupo 1 control, y a otras 9 restantes se les administró un preparado que contenía glucosa marcada más Glicolit (grupo 2.Se realizaron extracciones de sangre y conteos radioactivos en el plasma a diferentes tiempos Se observó diferencias en las áreas debajo de las curvas de absorción de la glucosa entre ambos grupos de ratas, el Glicolit mostró su capacidad como antihiperglicemiante. Los resultados alcanzados nos permiten continuar trabajando en el estudio de este posible medicamento. Además los resultados obtenidos por el método radioisotópico con glucosa marcada con 14 C corroboran los resultados de estudios anteriores.

  10. Synergistic suppression of the PI3K inhibitor CAL-101 with bortezomib on mantle cell lymphoma growth

    Institute of Scientific and Technical Information of China (English)

    Fu-Lian Qu; Bing Xia; Su-Xia Li; Chen Tian; Hong-Liang Yang; Qian Li; Ya-Fei Wang; Yong Yu; Yi-Zhuo Zhang

    2015-01-01

    Objective:To investigate the effects of CAL-101, particularly when combined with bortezomib (BTZ) on mantle cell lymphoma (MCL) cells, and to explore its relative mechanisms. Methods:MTT assay was applied to detect the inhibitory effects of different concentrations of CAL-101. MCL cells were divided into four groups:control group, CAL-101 group, BTZ group, and CAL-101/BTZ group. hTe expression of PI3K-p110σ, AKT, ERK, p-AKT and p-ERK were detected by Western blot. hTe apoptosis rates of CAL-101 group, BTZ group, and combination group were detected by lfow cytometry. hTe location changes of nuclear factor kappa-B (NF-κB) of 4 groups was investigated by NF-κB Kit exploring. Western blot was applied to detect the levels of caspase-3 and the phosphorylation of AKT in different groups. Results:CAL-101 dose-and time-dependently induced reduction in MCL cell viability. CAL-101 combined with BTZ enhanced the reduction in cell viability and apoptosis. Western blot analysis showed that CAL-101 signiifcantly blocked the PI3K/AKT and ERK signaling pathway in MCL cells. hTe combination therapy contributed to the inactivation of NF-κB and AKT in MCL cell lines. However, cleaved caspase-3 was up-regulated atfer combined treatment. Conclusion:Our study showed that PI3K/p110σis a novel therapeutic target in MCL, and the underlying mechanism could be the blocking of the PI3K/AKT and ERK signaling pathways. hTese ifndings provided a basis for clinical evaluation of CAL-101 and a rationale for its application in combination therapy, particularly with BTZ.

  11. A Comparison of CAL with a Conventional Method of Delivery of Cell Biology to Undergraduate Nursing Students Using an Experimental Design.

    Science.gov (United States)

    Wharrad, Heather J.; Kent, Christine; Allcock, Nick; Wood, Barry

    2001-01-01

    In study 1, 12 nursing students attended slide lectures on cell biology; 13 used interactive computer-assisted learning (CAL). Study 2 surveyed 38 students who used CAL to study immunology. Students preferred CAL and felt confident in their grasp of the material, even without the presence of lecturers to answer questions. (Contains 16 references.)…

  12. Plano de negócios: calções de banho outlier

    OpenAIRE

    Batista, Frederico Cipriano

    2014-01-01

    Mestrado em Gestão/JEL Classification System: M13, M21 Este projeto tem como objetivo a apresentação de um Plano de Negócios, que estude a viabilidade económica e financeira, da criação da Outlier, uma marca de calções de banho inovadora, em Portugal. Esta ideia surge no seguimento da deteção de uma necessidade por satisfazer neste segmento de mercado, onde não existem calções de banho com bolso impermeável e claramente distintos dos demais. Os dados recolhidos demonstram que a criaç...

  13. FPGA Implementation of Optimal Filtering Algorithm for TileCal ROD System

    CERN Document Server

    Torres, J; Castillo, V; Cuenca, C; Ferrer, A; Fullana, E; González, V; Higón, E; Poveda, J; Ruiz-Martinez, A; Salvachúa, B; Sanchis, E; Solans, C; Valero, A; Valls, J A

    2008-01-01

    Traditionally, Optimal Filtering Algorithm has been implemented using general purpose programmable DSP chips. Alternatively, new FPGAs provide a highly adaptable and flexible system to develop this algorithm. TileCal ROD is a multi-channel system, where similar data arrives at very high sampling rates and is subject to simultaneous tasks. It include different FPGAs with high I/O and with parallel structures that provide a benefit at a data analysis. The Optical Multiplexer Board is one of the elements presents in TileCal ROD System. It has FPGAs devices that present an ideal platform for implementing Optimal Filtering Algorithm. Actually this algorithm is performing in the DSPs included at ROD Motherboard. This work presents an alternative to implement Optimal Filtering Algorithm.

  14. The design, fabrication and properties of B4C/Al neutron absorbers

    International Nuclear Information System (INIS)

    Neutron absorber is used for the criticality safety during the storage or transportation of spent nuclear fuel. In this work, the metal matrix composite with good mechanical property and thermal neutron absorbing ability was investigated based on B4C/Al neutron radiation shielding material. The composition ratio for B4C/Al composite was firstly designed and the dependence of the neutron transmission on the thickness of the material was calculated. By vacuum hot-pressing technique at a low temperature, the neutron absorbers with high concentration of B4C were fabricated. Furthermore, the corresponding microstructure, physical, mechanical and corrosion properties as well as fracture surface were analyzed, proving that the developed composites can shield the neutron radiation as effectively as cadmium materials

  15. Practical Aspects of CALS in Design and Manufacturing of Sheet Metal Products

    DEFF Research Database (Denmark)

    Shpitalni, Moshe; Alting, Leo; Bilberg, Arne

    1998-01-01

    the CALS approach. This approach requires global observation and allows actual and current information to flow both forward and backward. This information, regardless of the specific process in which it has been generated, is used to improve the entire global process. This paper is concerned......The transition from design to process planning and to the various stages of manufacturing is traditionally sequential. In many cases, practical problems associated with manufacturing cannot be resolved if only individual processes are examined. These problems can be overcome, however, by adopting...... with the design and manufacture of sheet metal parts. It is demonstrated that through implementation of the CALS approach, the overall process can be optimised and products can be manufactured significantly more accurately, faster and less expensively....

  16. Study of TileCal scintillators irradiation using the Minimum Bias integrators

    CERN Document Server

    Fischer, Cora; The ATLAS collaboration

    2016-01-01

    The Tile Calorimeter (TileCal) is the central hadronic calorimeter of the ATLAS experiment at the LHC. It provides precise energy measurements of hadrons, jets, taus and missing transverse energy. The monitoring and calibration of the calorimeter response at each stage of the signal development is done by a movable Cs$^{137}$ radioactive source, a laser calibration system and a charge injection system. Moreover, during LHC data taking, an integrator based readout provides the signals coming from inelastic proton-proton collisions at predominantly low momentum transfer (minimum bias events) and allows to monitor the instantaneous ATLAS luminosity as well as the response of calorimeter cells. The integrator currents have been used to detect and quantify the effect of TileCal scintillators irradiation using the data taken in 2012 and 2015 that corresponds to about 22\\;fb$^{-1}$ and 4\\;fb$^{-1}$ of integrated luminosity. Finally, the response variation for an irradiated cell has been studied combining the informa...

  17. A qualitative evaluation of UC CalFresh Plan, Shop, Save, Cook curriculum reveals additional outcomes

    Directory of Open Access Journals (Sweden)

    Andra Nicoli

    2016-04-01

    Full Text Available UC ANR Cooperative Extension (UCCE conducted six focus groups in 2013 with CalFresh-eligible adults to determine how to improve the existing evaluation method for the Plan, Shop, Save, Cook nutrition education classes. Focus group participants (n = 54 cited many behavior changes that are captured by the existing method. During the focus groups, changes in cooking practices and types of food purchased emerged as two domains that are not currently captured. A small pilot study conducted on 22 of the 54 focus group participants suggests that using a telephone interview to survey participants is a feasible and practical approach to collect follow-up data on long-term behavior changes. More rigorous follow-up studies may guide the development of policies aimed at increasing diet quality and food security of adult CalFresh participants.

  18. Experiment of Injecting Phase Cal Ahead of the Feed: First Results

    Science.gov (United States)

    Ivanov, Dmitrij; Maslenikov, Anatolij; Vytnov, Alexander

    2010-01-01

    For developing the Russian VLBI network of new generation, a few experiments of injecting the phase calibration signal ahead of the feed were carried out. In the experiments an external broadband phase calibration signal was emitted through a special feed to a receiver horn directly. Prototypes of the feed for a frequency range of 2-18 GHz were created. The first experiments on injection phase cal ahead of the feed were carried out at Svetloe Observatory of the QUASAR VLBI network. The phase cal signal was emitted by the broadband feed installed on the roof of a mirror cabin, reflected by the sub-reflector, and received by the horn of the receiving system. The results of these experiments are considered.

  19. Los orígenes tecnológicos de la cal

    OpenAIRE

    Isabel Villaseñor Alonso; Luis Barba Pingarrón

    2012-01-01

    En este artículo hacemos una revisión de los sitios arqueológicos en donde se ha re- portado el uso temprano de la cal en la arquitectura, con la finalidad de entender la forma en que esta tecnología fue inventada y posteriormente difundida a las distintas regiones de México y Centroamérica. Con base en nuestro análisis proponemos que las tierras bajas mayas, el valle de Oaxaca y la región de Puebla-Tlaxcala constituyen las tres zonas con el uso más temprano de la cal; por lo tanto, son las d...

  20. SYNTHESIS AND PROPERTY STUDY OF NANOPARTICLE QUATERNARY SEMICONDUCTOR SiCAlN FILMS WITH CO-SPUTTERING UNDER LOWER TEMPERATURE

    OpenAIRE

    SHIYONG HUANG; Xu, S; JIDONG LONG; ZHENHONG DAI; YUANPING SUN

    2005-01-01

    Quaternary SiCAlN nanoparticle films were produced by reactive rf magnetron co-sputtering technique with a chemically pure SiC and an Al target under low temperature. The crystalline structure, surface morphology, and element content of the films were studied in terms of sputtering parameters. The element content and chemical states of SiCAlN films were measured by means of energy dispersive X-ray fluorescence (EDX) and X-ray photoelectronic spectroscopy (XPS). Surface morphology of SiCAlN fi...

  1. La Nouvelle-Calédonie: modèle d'île

    Directory of Open Access Journals (Sweden)

    Thérèse PANOUILLÈRES

    1986-12-01

    Full Text Available Relief, précipitations, répartition de la population accusent un certain nombre de dissymétries est-ouest en Nouvelle-Calédonie; la colonisation récente et la concentration de plus de la moitié des habitants à Nouméa sont un facteur supplémentaire de déséquilibre spatial.

  2. PAS-cal: a Generic Recombinant Peptide Calibration Standard for Mass Spectrometry

    OpenAIRE

    Breibeck, Joscha; Serafin, Adam; Reichert, Andreas; Maier, Stefan; Küster, Bernhard; Skerra, Arne

    2014-01-01

    We describe the design, preparation, and mass-spectrometric characterization of a new recombinant peptide calibration standard with uniform biophysical and ionization characteristics for mass spectrometry. “PAS-cal” is an artificial polypeptide concatamer of peptide cassettes with varying lengths, each composed of the three small, chemically stable amino acids Pro, Ala, and Ser, which are interspersed by Arg residues to allow site-specific cleavage with trypsin. PAS-cal is expressed at high y...

  3. CalWORKs Sanction Policies in Four Counties: Practices, Attitudes, and Knowledge

    OpenAIRE

    Sofya Bagdasaryan, with Ruth Matthias, Paul Ong, and Douglas Houston

    2005-01-01

    The federal Personal Responsibility and Work Opportunity Reconciliation Act of 1996 was the most sweeping overhaul of the U.S. welfare program for poor families with children since its inception in the 1935 Social Security Act.To comply with the new federal law, California passed its Temporary Assistance to Needy Families plan in August 1997. Counties began implementing the new program, CalWORKs (California Work Opportunity and Responsibility to Kids), on January 1, 1998.

  4. Environmental change in NW Iberia between 7000 and 500 cal BC

    OpenAIRE

    Martínez Cortizas, Antonio; Costa-Casais, Manuela; López Sáez, José Antonio

    2009-01-01

    [EN] We review research done on environmental changes in northwest (NW) Iberia spanning from the beginning to the late Holocene (7000–500 cal. BC). The type of archives (peat bogs, lake sediments, colluvium, soils, etc.) and proxies (pollen, element concentrations, isotopes, etc.) that were used to reconstruct changes on climate, soils, vegetation and atmospheric metal pollution are briefly described. Then we synthesize what the records suggest about the ecological history of NW Iberia. We id...

  5. RVC-CAL dataflow implementations of MPEG AVC/H.264 CABAC decoding

    OpenAIRE

    Bezati, Endri; Mattavelli, Marco; Raulet, Mickael

    2010-01-01

    International audience This paper describes the implementation of the MPEG AVC CABAC entropy decoder using the RVC-CAL dataflow programming language. CABAC is the Context based Adaptive Binary Arithmetic Coding entropy decoder that is used by the MPEG AVC/H.264 main and high profile video standard. CABAC algorithm provides increased compression efficiency, however presents a higher complexity compared to other entropy coding algorithms. This implementation of the CABAC entropy decoder usin...

  6. Automatic generation of synthesizable hardware implementation from high level RVC-cal description

    OpenAIRE

    Jerbi, Khaled; Raulet, Mickaël; Deforges, Olivier; Abid, Mohamed

    2012-01-01

    International audience Data process algorithms are increasing in complexity especially for image and video coding. Therefore, hardware development using directly hardware description languages (HDL) such as VHDL or Verilog is a difficult task. Current research axes in this context are introducing new methodologies to automate the generation of such descriptions. In our work we adopted a high level and target-independent language called CAL (Caltrop Actor Language). This language is associa...

  7. Design of an Embedded Low Complexity Image Coder using CAL language

    OpenAIRE

    Jerbi, Khaled; Raulet, Mickaël; Déforges, Olivier; Abid, Mohamed

    2009-01-01

    International audience The increasing complexity of image codecs and the time to market requires a high level design. Caltrop Actor Language (CAL) is a domain-specific language that provides useful abstractions for dataflow programming with actor. It has been chosen by the ISO/IEC standardization organization in the new MPEG standard called Reconfigurable Video Coding. This framework is adopted to design a multitude of codecs by combining actors. We present in this paper the specification ...

  8. Ward identities and gauge flow for M-theory in ${\\cal N}{=}3$ superspace

    CERN Document Server

    Upadhyay, Sudhaker

    2015-01-01

    We derive the BRST symmetry, Slavnov-Taylor identities and Nielsen identities for the ABJM theories in ${\\cal N}{=}3$ harmonic superspace. Further, the gauge dependence of one-particle irreducible amplitudes in such superconformal Chern-Simons theory is shown to be generated by a canonical flow with respect to the extended Slavnov-Taylor identity, induced by the extended BRST transformations (including the BRST transformations of the gauge parameters).

  9. The Works Metallurgist: an evaluation of a CAL package on phase diagrams

    OpenAIRE

    Blake, Canan; Butcher, Philip; Scanlon, Eileen; Jones, Ann

    1996-01-01

    The Works Metallurgist is used in the Open University course: Materials — Engineering and Science. It is being evaluated as part of a larger study of CAL teaching in Science and Technology at the Open University. With 540 students, the course provides a sufficiently large sample for a range of evaluation methods to be employed in a variety of settings (e.g. home, residential school). The methods used include questionnaires, attitude scales and pre/post achievement tests, observations and inte...

  10. Integration of Computer-Aided Acquisition & Logistic Support (CALS) components into the ROK Army information infrastructure

    OpenAIRE

    Jo Sang

    1995-01-01

    The goal of the CALS initiative is to enable integration of enterprises on a worldwide basis. The vision is for all or parts of a single enterprise, or for example, an original equipment manufacturer and its suppliers, or a consortium of public and private groups and academia, to be able to work from a common digital database, in real time, on the design, development, manufacturing, distribution and servicing of products. The direct benefits would come through substantial reductions in produc...

  11. A Mathematica-based CAL matrix-theory tutor for scientists and engineers

    Directory of Open Access Journals (Sweden)

    M. A. Kelmanson

    1993-12-01

    Full Text Available Under the TLTP initiative, the Mathematics Departments at Imperial College and Leeds University are jointly developing a CAL method directed at supplementing the level of mathematics of students entering science and engineering courses from diverse A-level (or equivalent backgrounds. The aim of the joint project is to maintain – even increase - the number of students enrolling on such first-year courses without lowering the courses' existing mathematical standards. A CAL tutor for matrix theory is presented in this paper, in the form of Mathematica Notebooks. This constitutes one of a list of specific A-level mathematics core options required by science and engineering departments. The module has been written so as to recognize students' errors and advise accordingly. Questions are generated randomly, at run time, in order to preclude copying between users. The module incorporates automated performance indicators so as to impinge minimally on existing staff resources. As an aid to other CAL authors considering the use of Mathematica Notebooks, idiosyncratic difficulties encountered within Mathematica Notebooks are catalogued and discussed in detail.

  12. Study of the Pulse Shapes from the 3-in-1 Cards at ATLAS TileCal

    Science.gov (United States)

    Cheng, Y.; Dunford, M.; Kim, Y. K.

    2010-02-01

    The ATLAS Tile Calorimeter (TileCal) is designed to measure energy depositions in a single cell from 30 MeV to 2 TeV, and we expect to calibrate its response to 1-2%. We present studies of pulse shapes from the front-end electronics of the TileCal and infer their impact on minimum bias pile-up events, especially at high luminosity. High and low gain signals were obtained from both CERN and the University of Chicago test benches, using both the charge injection system and LED. In our studies, we quantify pulse-shapes and undershoot, measure card-to-card variations, and then compare these pulse shapes to the reference shapes used in ATLAS simulation. By running the TileCal pulse shape reconstruction using both the standard shapes in simulation and the shapes from test bench measurements, we are able to investigate the sensitivity of the reconstruction procedure to differences in pulse shape. )

  13. NLTE Model Atmosphere Analysis of the LMC Supersoft X-ray Source CAL 83

    CERN Document Server

    Lanz, T; Audard, M; Paerels, F; Rasmussen, A P; Hubeny, I; Lanz, Thierry; Telis, Gisela A.; Audard, Marc; Paerels, Frits; Rasmussen, Andrew P.; Hubeny, Ivan

    2005-01-01

    We present a non-LTE model atmosphere analysis of Chandra HRC-S/LETG and XMM-Newton RGS spectroscopy of the prototypical supersoft source CAL 83 in the Large Magellanic Cloud. Taken with a 16-month interval, the Chandra and XMM-Newton spectra are very similar. They reveal a very rich absorption line spectrum from the hot white dwarf photosphere, but no spectral signatures of a wind. We also report a third X-ray off-state during a later Chandra observation, demonstrating the recurrent nature of CAL 83. Moreover, we found evidence of short-timescale variability in the soft X-ray spectrum. We completed the analysis of the LETG and RGS spectra of CAL 83 with new NLTE line-blanketed model atmospheres that explicitly include 74 ions of the 11 most abundant species. We successfully matched the Chandra and XMM-Newton spectra assuming a model composition with LMC metallicity. We derived the basic stellar parameters of the hot white dwarf, but the current state of atomic data in the soft X-ray domain precludes a detail...

  14. A study to optimize the simulation of the TileCal response using collision muons

    CERN Document Server

    Durglishvili, Archil

    2013-01-01

    The ATLAS experiment at the CERN Large Hadron Collider (LHC) is designed to fully exploit the exciting opportunities for fundamental discoveries at high-energy frontier. The proton-proton center of mass energy of 14 TeV, the design luminosity of $10^{34}cm^{−2}s^{−1}$ and the time between bunch crossings of 25 ns are the basic collider parameters that drove the design of the experiment. One component of the ATLAS calorimeter system is Tile Calorimeter (TileCal). It is a sampling plastic scintillator/iron detector. A Sr scan of one of the TileCal scintillator tile shows that mesured signal in the center of tile is different from the signal in the edges. The shape of the distribution of tile response vs. $\\Delta{\\phi}$ is so-called U-shape. $\\Delta{\\phi}$ is the difference between the azimuth angle of the track and the azimuth position of the center of the tile. In the Monte Carlo (MC) simulation of the TileCal response this U-shape is not yet included. In this work the U-shape was implemente...

  15. Remarks on N=1 ${\\cal SW}(3/2,2)$ algebras

    CERN Document Server

    Naka, M

    2002-01-01

    We find that some N=1 superconformal ${\\cal W}$ algebras ${\\cal SW}(3/2,2)$ can be constructed by a coset language based on compact Wolf spaces. Unitary models of discrete central charge in $3/2 \\leq c \\leq 6$ containing N=0 minimal models can be realized as level 1 coset models based on the Wolf spaces $G/(H\\times SU(2))$. The factor SU(2) encodes a information of N=0 minimal models. Then we argue that the models can be twisted to give topological conformal field theories. BRST charge is represented as double contour integrals of a spin 3/2 superconformal current. The BRST exactness of a topological stress tensor holds. In particular, a cyclic symmetry of $A$ series extended Dynkin diagram suggests that the models enhance to N=2 superconformal models based on Kazama-Suzuki coset construction. This situation is similar to a phenomena found by Gepner and Noyvert. Our observation might be viewed as a toy example in order to discuss a formulation of topological model of $c=12$ ${\\cal SW}(3/2,2)$ algebra for stri...

  16. Posibilidades estructurales de materiales a base de cal como conglomerante: primeros resultados

    Directory of Open Access Journals (Sweden)

    Estrada, Enrique

    1986-11-01

    Full Text Available Lime is a plentiful material which production combine a very accessible technology with the advantage that it must be prepared in little disperse plants, so that the transport charges can be reduced to the minimum. This work expound the possibility to obtain concretes with structural purposes, for housing of scarce height, of easy obtention, basically from flying ashes or rice husk ashes, varying its proportions and fineness degree and studying the initial and final resistance. Good results have been obtained mainly with rice husk ashes and lime, with 60 days resistance higher than 15 Mpa.La cal es un material abundante y cuya producción suma a una tecnología muy accesible la ventaja de poder materializarse en pequeñas plantas dispersas, para poder reducir al mínimo la componente de costo debida al transporte. En el presente trabajo se ha planteado la posibilidad de obtener hormigones con fines estructurales, para viviendas de baja altura y que sean de fácil obtención, a base de cal y cenizas volantes o cenizas de cascara de arroz, variando sus proporciones, grados de finura y estudiando la influencia de distintos factores en la resistencia inicial y final. Se han obtenido buenos resultados, principalmente con ceniza de cascara de arroz y cal con resistencias a 60 días superiores a los 15 MPa.

  17. The upgrade of the laser calibration system for the ATLAS hadron calorimeter TileCal

    CERN Document Server

    Spalla, Margherita; The ATLAS collaboration

    2014-01-01

    The Tile Calorimeter (TileCal), the central section of the hadronic calorimeter of the ATLAS experiment, is a key detector component to detect hadrons, jets and taus and to measure the missing transverse energy. TileCal is built of steel and scintillating tiles coupled to optical fibers and read‐out by photomultipliers (PMT). The performance of TileCal relies on a continuous, high resolution calibration of the individual response of the 10,000 channels forming the detector. The calibration is based on a three level architecture: a charge injection system used to monitor the full electronics chain including front-end amplifiers, digitizers and event builder blocks for each individual channel; a distributed optical system using laser pulses to excite all PMTs; and a mobile Cesium radiative source which is driven through the detector cell floating inside a pipe system. This architecture allows for a cascade calibration of the electronics, of the PMT and electronics, and of full chain including the active detec...

  18. Upgrade Design of TileCal Front-end Readout Electronics and Radiation Hardness Studies

    CERN Document Server

    Anderson, K; The ATLAS collaboration; Drake, G; Eriksson, D; Muschter, S; Oreglia, M; Pilcher, J; Price, L; Tang, F

    2011-01-01

    The ATLAS Tile Calorimeter (TileCal) is essential for measuring the energy and direction of hadrons and taus produced in LHC collisions. The TileCal consists of "tiles" of plastic scintillator dispersed in a fine-grained steel matrix . Optical fibers from the tiles are sent to ~10,000 photomultiplier tubes (PMT) and associated readout electronics. The TileCal front-end analog readout electronics process the signals from ~10,000 PMTs. Signals from each PMT are shaped with a 7-pole passive LC shaper and split it to two channels amplified by a pair of clamping amplifiers with a gain ratio of 32. Incorporated with two 40Msps 12-bit ADCs, the readout electronics provide a combined dynamic range of 17-bits. With this dynamic range, the readout system is capable of measuring the energy deposition in the calorimeter cells from ~220MeV to 1.3TeV with the least signal-to-noise ratio of greater than 20. The digitized data from each PMT are transmitted off-detector optically, where the data are further processed with ded...

  19. Mass spectra in ${\\cal N}=1$ SQCD with additional colorless fields. Strong coupling regimes. II

    CERN Document Server

    Chernyak, Victor L

    2016-01-01

    This paper continues our studies in arXiV:1608.06452 [hep-th] of ${\\cal N}=1$ gauge theories in the strongly coupled regimes. We also consider here the ${\\cal N}=1$ SQCD-like theories with $SU(N_c)$ colors (and their Seiberg's dual), with $N_F$ flavors of light quarks and $N_F^2$ additional colorless flavored scalars $\\Phi^j_i$, but now with $N_F$ in the range $N_F>3N_c$. The mass spectra of these direct and dual theories in various vacua are calculated within the dynamical scenario introduced by the author in [8]. It assumes that quarks in such ${\\cal N}=1$ SQCD-like theories without elementary colored adjoint scalars can be in two {\\it standard} phases only. These are either the HQ (heavy quark) phase where they are confined or the Higgs phase. Recall that this scenario satisfies all those tests which were used as checks of the Seiberg hypothesis about the equivalence of the direct and dual theories. Calculated mass spectra of the direct $SU(N_c)$ theory are compared to those of its Seiberg's dual $SU(N_F-N...

  20. Studies with Muons in ATLAS: TileCal Level-2 Trigger and MSSM Higgs Discovery Reach

    CERN Document Server

    Ruiz Martínez, A; Valls Ferrer, J A

    2009-01-01

    This thesis was carried out in the years previous to the LHC start-up, i.e. during the ATLAS detector commissioning phase. It contains an introductory part about the detector and its expected physics performance and two main parts about the development of a Level-2 trigger for muons and a study of the MSSM Higgs discovery reach with simulated data, which are briefly described below. The first part of the thesis is devoted to TileMuId, the muon identication algorithm based on TileCal whose main goal is to be used as a Level-2 trigger of low-$p_{\\text{T}}$ muons. A second version of TileMuId (ROD-based) has been implemented to run in the TileCal ROD DSPs. This involved developments in the DSP firmware and in the Athena framework, described in the document. In addition, studies of the algorithm performance in terms of efficiency and fraction of fakes have been done. Developments and studies to match the TileCal muon candidates with the Inner Detector tracks (provided by ID reconstruction algorithms) have been pe...

  1. Exploiting Parallelism in the TileCal Trigger System with GPGPU

    Science.gov (United States)

    Sacks, Marc

    2015-10-01

    After the 2022 upgrades, the Tile Calorimeter (TileCal) detector at ATLAS will be generating raw data at a rate of approximately 41 TB/s. The TileCal triggering system contains a degree of parallelism in its processing algorithms and thus presents an opportunity to explore the use of general-purpose computing on graphics processing units (GPGPU). Currently, research into the viability of an sROD ARM-based co-processing unit (PU) is being conducted at Wits University with especial regard to increasing the I/O throughput of the detector. Integration of GPGPU into this PU could enhance its performance by relieving the ARMs of particularly parallel computations. In addition to the PU, use of GPGPU in the front-end trigger is being investigated on the basis of the used algorithms having a similarity to image processing algorithms - where GPU can be used optimally. The use of GPUs in assistance to or in place of FPGAs can be justified by GPUs’ relative ease of programming; C/C++ like languages as opposed to assembly-like Hardware Description Languages (HDLs). This project will consider how GPUs can best be utilised as a subsystem of TileCal in terms of power and computing efficiency; and therefore cost.

  2. Consistent ${\\cal N}=8$ truncation of massive IIA on $S^6$

    CERN Document Server

    Guarino, Adolfo

    2015-01-01

    Massive type IIA supergravity is shown to admit a consistent truncation on the six-sphere to maximal supergravity in four dimensions with a dyonic ISO(7) gauging. We obtain the complete, non-linear embedding of all the $D=4$ fields into the IIA metric and form potentials, and show its consistency. We first rewrite the IIA theory in an $\\textrm{SO}(1,3) \\times \\textrm{SL}(7)$--covariant way. Then, we employ an ${\\cal N}=8$ SL(7)--covariant restriction of the $D=4$ tensor hierarchy in order to find the full embedding. The redundant $D=4$ degrees of freedom introduced by the tensor hierarchy can be eliminated by writing the embedding in terms of the field strengths and exploiting the restricted duality hierarchy. In particular, closed expressions for the Freund-Rubin term are found using this technique which reveal a pattern valid for other truncations. Finally, we show that the present ${\\cal N}=8$ truncation of massive IIA on $S^6$ and the ${\\cal N}=2$ truncation obtained when $S^6$ is equipped with its nearly...

  3. The TileCal Energy Reconstruction for Collision Data Using the Matched Filter

    CERN Document Server

    Peralva, B S M; The ATLAS collaboration; Cerqueira, A S; Seixas, J M

    2013-01-01

    The Tile Barrel Calorimeter (TileCal) is the central section of the hadronic calorimeter of ATLAS at LHC. It comprises more than 10,000 readout channels. The energy deposited in each channel is read out and the analog pulse is conditioned by a shaper circuit. The signal energy is estimated by reconstructing the amplitude of the digitized pulse sampled every 25 ns. This work presents the performance of an alternative algorithm for TileCal energy reconstruction, namely the TileCal Matched Filter (MF). The performance of the MF method is compared to the currently implemented algorithm (OF2) using collision data acquired in 2010 during LHC operation period. The results showed that the MF presents smaller error estimation (variance) than the OF2 method. In addition to that, the methods showed to be highly correlated with each other for high SNR signals. Preliminary results using a special ATLAS collision data taken later in 2012, for which LHC operated at 25 ns bunch spacing and ATLAS observed an increase of the p...

  4. Informe APEI sobre movilidad

    OpenAIRE

    Arroyo Vázquez, Natalia

    2011-01-01

    Este informe incluye una amplia aproximación al concepto de movilidad, desde un punto de vista introductorio, que nunca antes en nuestro ámbito había abarcado todos los aspectos que tienen que ver con él, desde cuestiones técnicas como los dispositivos móviles, sistemas operativos y navegadores, conectividad y estándares —cuya intención es poder comprender todos aquellos aspectos relacionados con la movilidad y que tienen una incidencia directa sobre los contenidos— hasta otras más relacionad...

  5. Apuntes sobre liderazgo

    OpenAIRE

    Contreras, Manuel E.

    2010-01-01

    Este trabajo presenta una breve síntesis de las principales teorías de liderazgo y se centra sobre el enfoque de liderazgo adaptativo de Ronald Heifetz. El documento originalmente fue desarrollado para las sesiones de educación a distancia de INDES. Ha sido revisado para usar en otros ámbitos de capacitación y ha sido utilizado en sesiones presenciales llevadas a cabo por INDES, como por otras entidades en universidades y centros de capacitación de America Latina.

  6. Sobre el razonamiento judicial

    OpenAIRE

    Asís Roig, Rafael de

    1998-01-01

    El trabajo elabora modelos a través de los cuáles es posible reconstruir la argumentación judicial plasmada en las sentencias y, a la vez, hacer explícitas las reglas que sirven de justificación a sus decisiones, y el marco normativo utilizado como referencia. El estudio analiza tanto los pronunciamientos sobre hechos como los que se refieren a la calificación jurídica, en principio, desde una perspectiva descriptiva. Ahora bien, también se llevan a cabo reflexiones y propuestas que van más a...

  7. Puente sobre el Rin

    Directory of Open Access Journals (Sweden)

    Gortz, Wilhelm

    1961-12-01

    Full Text Available Del total de 35 proyectos presentados al concurso del puente para carretera sobre el Rin, entre Duisburg-Ruhrort y Homberg, sólo dos proposiciones de la Demag fueron consideradas: Una con tablero suspendido por vientos que parten de dos torres, y otra, con suspensión por cables flexibles que se apoyan en dos torres y anclaje en la misma estructura. Por razones netamente estéticas fue elegida la propuesta Demag de puente suspendido por cables, aunque la solución con vientos hubiera sido la más económica, teniendo en cuenta las condiciones existentes.

  8. The TileCal Online Energy Estimation for the Next LHC Operation Period

    Science.gov (United States)

    Sotto-Maior Peralva, B.; ATLAS Collaboration

    2015-05-01

    The ATLAS Tile Calorimeter (TileCal) is the detector used in the reconstruction of hadrons, jets and missing transverse energy from the proton-proton collisions at the Large Hadron Collider (LHC). It covers the central part of the ATLAS detector (|η| pile-up that deforms the signal of interest. Due to limited resources, the current hardware setup, which is based on Digital Signal Processors (DSP), does not allow the implementation of sophisticated energy estimation methods that deal with the pile-up. Therefore, the technique to be employed for online energy estimation in TileCal for next LHC operation period must be based on fast filters such as the Optimal Filter (OF) and the Matched Filter (MF). Both the OF and MF methods envisage the use of the background second order statistics in its design, more precisely the covariance matrix. However, the identity matrix has been used to describe this quantity. Although this approximation can be valid for low luminosity LHC, it leads to biased estimators under pile- up conditions. Since most of the TileCal cell present low occupancy, the pile-up, which is often modeled by a non-Gaussian distribution, can be seen as outlier events. Consequently, the classical covariance matrix estimation does not describe correctly the second order statistics of the background for the majority of the events, as this approach is very sensitive to outliers. As a result, the OF (or MF) coefficients are miscalculated leading to a larger variance and biased energy estimator. This work evaluates the usage of a robust covariance estimator, namely the Minimum Covariance Determinant (MCD) algorithm, to be applied in the OF design. The goal of the MCD estimator is to find a number of observations whose classical covariance matrix has the lowest determinant. Hence, this procedure avoids taking into account low likelihood events to describe the background. It is worth mentioning that the background covariance matrix as well as the OF coefficients for

  9. CAMPARE and Cal-Bridge: Two Institutional Networks Increasing Diversity in Astronomy

    Science.gov (United States)

    Rudolph, Alexander L.; Impey, Chris David; Phillips, Cynthia B.; Povich, Matthew S.; Prather, Edward E.; Smecker-Hane, Tammy A.

    2015-01-01

    We describe two programs, CAMPARE and Cal-Bridge, with the common mission of increasing participation of groups traditionally underrepresented in astronomy, particularly underrepresented minorities and women, through summer research opportunities, in the case of CAMPARE, scholarships in the case of Cal-Bridge, and significant mentoring in both programs, leading to an increase in their numbers successfully pursuing a PhD in the field.CAMPARE is an innovative REU-like summer research program, currently in its sixth year, comprising a network of comprehensive universities and community colleges in Southern California and Arizona (most of which are minority serving institutions), and ten major research institutions (University of Arizona Steward Observatory, the SETI Institute, JPL, Caltech, and the five Southern California UC campuses, UCLA, UCI, UCSD, UCR, and UCSB).In its first five summers, CAMPARE sent a total of 49 students from 10 different CSU and community college campuses to 5 research sites of the program. Of these 49 participants, 25 are women and 24 are men; 22 are Hispanic, 4 are African American, and 1 is Native American, including 6 female Hispanic and 2 female African-American participants. Twenty-one (21) CAMPARE participants have graduated from college, and more than half (11) have attended or are attending a graduate program, including 8 enrolled in PhD or Master's-to-PhD programs. Over twenty CAMPARE students have presented at the AAS and other national meetings.The Cal-Bridge program is a diverse network of higher education institutions in Southern California, including 5 UC campuses, 8 CSU campuses, and 7 community colleges dedicated to the goal of increasing the number of underrepresented minority and female students attending graduate school in astronomy or related fields. We have recently selected our inaugural group of five 2014 Cal-Bridge Scholars, including four women (two Hispanic and one part Native American), and one Hispanic man

  10. Pollen record and environmental evolution of Caotanhu wetland in Xinjiang since 4550 cal. a BP

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yun; KONG ZhaoChen; NI Jian; YAN Shun; YANG ZhenJing

    2008-01-01

    This paper presents a multi-proxy reconstruction of the climate change in Caotanhu wetland using pollen, phytolith and charcoal records, and the data of loss of ignition (LOI), grain size analysis, and susceptibility. Results reveal that between 4550 and 2500 cal. a BP, a dry climatic condition was not favorable for the accumulation of peat. Since 2500 cal. a BP, the climate became humid and the wetland developed with abundant freshwater aquatic plants, which contributed to peat accumulation. Never-theless, alternate periods of rain and dry climate occurred during that period. Between 2500 and 1810 cal. a BP (550 BC-140 AD), the climate was more humid than at present. A lot of emerged plants, such as Phragmites, Typha and Sparganium, and freshwater green algae grew in the wetland which was sur-rounded by desert-steppe vegetation composed mainly of Chenopodiaceae, Arternisia, Compositae and Thalictrum. However, from 1810 to 1160 cal. a BP (140-790 AD), the water level started to decrease and hydrophyte species reduced greatly, but some Phragmites still grew in the wetland and around it was desert vegetation with high proportion of Chenopodiaceae and Artemisia. Then from 1160 to 650 a BP (790-1300 AD), it entered a period of desert-steppe with abundant mesic and xerophytic plants. And a lot of aquatic plants prevailed in the wetland. Here, what is noticeable is that percentages of arboreal pollen, consisting mainly of Betula and Picea, increased greatly and reached a maximal value of 27.2%, in which, Betula percentages rose to 23.2%. Hence, it is reasonable to conclude that Betula grew in the highland of the wetland, or Picea timberline shifted downward resulting in the increase of percentages of Betula and Picea pollen, which were transported into the wetland by flood or wind. But since 650 cal. a BP, desert vegetation prevailed around the wetland again with dominant Chenopodiaceae and Ar-temisia, and the climate was similar to modern one. Despite some aquatic

  11. The quantitative reconstruction of the paleoclimate between 5200 and 4300 cal yr BP in the Tianshui Basin, NW China

    OpenAIRE

    Sun, N; X. Q. Li

    2011-01-01

    The quantitative reconstruction of the paleoclimate is the ultimate goal of studying past global change. Here, the Coexistence Approach (CA) was applied to reconstruct climatic factors quantitatively based on the fossil charcoal records between 5200 and 4300 cal yr BP in the Tianshui Basin, NW China. The climate of the Tianshui Basin belonged to the northern subtropical zone from 5200–4300 cal yr BP. The climatic tolerance ranges were selected, and the lower limit value was regarded as the lo...

  12. The quantitative reconstruction of the palaeoclimate between 5200 and 4300 cal yr BP in the Tianshui Basin, NW China

    OpenAIRE

    Sun, N; X. Q. Li

    2012-01-01

    The quantitative reconstruction of the palaeoclimate is a prerequisite for understanding climate processes at time scales of centuries and millennia. Here, the coexistence approach (CA) was applied to reconstruct climatic factors quantitatively based on the fossil charcoal records between 5200 and 4300 cal yr BP in the Tianshui Basin, NW China. The CA analysis showed that the climate of the Tianshui Basin belonged to the northern subtropical zone between 5200 and 4300 cal yr...

  13. The Impact of Open Access to Atypical Antipsychotics on Treatment Costs for Medi-Cal Patients with Bipolar Disorder

    OpenAIRE

    Sangeeta Narayan; Kimberly L. Sterling; McCombs, Jeffrey S.

    2006-01-01

    Background: The California Medicaid Program (Medi-Cal) provided open access to atypical antipsychotics in October 1997. This study investigated the impact of open access to atypical antipsychotics on the costs and duration of therapy for patients with bipolar disorders. Methods: Paid claims data from Medi-Cal were used to identify episodes of treatment using antipsychotics, antidepressants, mood stabilizers, or selected anticonvulsants initiated by patients with bipolar disorders. Episodes of...

  14. Assessment of CO2 capture by calcium looping (CaL) process in a flexible power plant operation scenario

    International Nuclear Information System (INIS)

    Among various carbon capture options, calcium looping (CaL) seems to be a promising method to reduce both energy and cost penalties for post-combustion CO2 capture compared to gas–liquid applications. In addition, assessment of dynamic performances of power plants with carbon capture is of great importance in the context of actual energy sector. This paper develops and evaluates, through dynamic modeling, the performances of CaL cycle operating in turbulent and fast fluidization regimes. CaL cycle has two independed circulated fluidized bed (CFB) reactors: the calciner, where CO2 is captured by reacting with CaO and the carbonator, where the CO2 is released and the sorbent is regenerated. Detailed mathematic models for both CaL cycle reactors were developed and simulated in dynamic conditions similar to the power plant cycling. The simulation results, in case of carbonator, were compared with experimental data published in literature and good quality prediction of CaL cycle was observed. In terms of CO2 capture efficiency, the sorbent capacity decreases significant with the number of cycles. The results proved that the height of the dense region decreases with increasing of the superficial velocity of the gas. The most part of the reactions takes place in the dense region; therefore, at smaller superficial gas velocities a higher carbonation degree can be achieved (more than 73%). The CO2 removal rate has been studied using a ramp, step and sinusoidal input tests to highlight the CaL transient response that occur in a real power plant due to load following operation. - Highlights: • Development of dynamic model for the CO2 capture using calcium looping (CaL) process. • Evaluation of CaL cycle dynamic behavior and model validation vs. experimental data. • Evaluation of CO2 removal capacity during a ramp, step and sinusoidal input tests

  15. Applications of the Continuous Acquisition and Life-cycle Support (CALS) initiative to the evolved SEASAPPROW Missile program

    OpenAIRE

    Fuhs, Hans Georg

    1995-01-01

    This thesis reviews the Continuous Acquisition and Life-cycle Support (CALS) initiative and its data format specifications and analyzes how they were applied to the Evolved SEASPARROW Missile (ES SM) Program. The CALS initiative and its data format specifications were developed to facilitate management of defense system technical data. With recent reforms in defense acquisition policy called for in Secretary of Defense memorandum, "Specifications & Standards - A New Way of Doing Business" the...

  16. Sobre la tragedia griega

    Directory of Open Access Journals (Sweden)

    Mauricio Vélez Upegui

    2015-01-01

    Full Text Available Luego de caracterizar la tragedia griega clásica como expresión de un arte ciudadano que participa por igual de un carácter festivo, cierto régimen discursivo y una clara inscripción físico-espacial, el texto se demora en considerar tres aspectos fundamentales de esta forma dramática inventada por los griegos, a saber: una exposición sobre las fuentes orales míticas de las que los autores echan mano para componer la historia de cada una de las piezas que son llevadas a escena al amparo de un espíritu agonal; una explicación del funcionamiento formal de la tragedia, basado en la alternancia de partes cantadas (coro y partes recitadas (héroe; y, finalmente, una acotación sobre el sentido –interno y externo– que la acción dramática posee, en tanto elemento articulador de la trama.

  17. Sobre historia mundial hoy

    Directory of Open Access Journals (Sweden)

    Vera Weiler

    2010-08-01

    Full Text Available Los procesos de globalización son una realidad; su enorme impacto sobre la vida humana los ha convertido en un tema recurrente sobre el que se escribe y se comenta a diario también en Colombia. Los libros que de ellos tratan, ante todo los que 10 hacen en tono crítico, baten records en la industria editorial en todo el mundo. Las expectativas que acerca del futuro abrigan cientos de millones de personas se relacionan con 10 que ellas esperan, para bien o para mal, de la globalización. Las posturas que los gobernantes ocupan al respecto en el mundo son, cuando menos de aceptación, generalmente de activa participación en pos de la globalización. Por un lado, crece la preocupación y se multiplican las protestas; por el otro, dominan los razonamientos de los especialistas en materia de maximización de los rendimientos de los capitales que presentan la globalización, al estilo que se viene imponiendo, como el camino ineludible del gobierno universal de la eficiencia. ¿Tienen que decir algo los historiadores frente a todo esto?.

  18. Crystallization and Preliminary Diffraction Analysis of the CAL PDZ Domain in Complex with a Selective Peptide Inhibitor

    Energy Technology Data Exchange (ETDEWEB)

    J Amacher; P Cushing; J Weiner; D Madden

    2011-12-31

    Cystic fibrosis (CF) is associated with loss-of-function mutations in the CF transmembrane conductance regulator (CFTR), which regulates epithelial fluid and ion homeostasis. The CFTR cytoplasmic C-terminus interacts with a number of PDZ (PSD-95/Dlg/ZO-1) proteins that modulate its intracellular trafficking and chloride-channel activity. Among these, the CFTR-associated ligand (CAL) has a negative effect on apical-membrane expression levels of the most common disease-associated mutant {Delta}F508-CFTR, making CAL a candidate target for the treatment of CF. A selective peptide inhibitor of the CAL PDZ domain (iCAL36) has recently been developed and shown to stabilize apical expression of {Delta}F508-CFTR, enhancing net chloride-channel activity, both alone and in combination with the folding corrector corr-4a. As a basis for structural studies of the CAL-iCAL36 interaction, a purification protocol has been developed that increases the oligomeric homogeneity of the protein. Here, the cocrystallization of the complex in space group P2{sub 1}2{sub 1}2{sub 1}, with unit-cell parameters a = 35.9, b = 47.7, c = 97.3 {angstrom}, is reported. The crystals diffracted to 1.4 {angstrom} resolution. Based on the calculated Matthews coefficient (1.96 {angstrom}{sup 3} Da{sup -1}), it appears that the asymmetric unit contains two complexes.

  19. The Aspergillus nidulans cetA and calA genes are involved in conidial germination and cell wall morphogenesis.

    Science.gov (United States)

    Belaish, Ravit; Sharon, Haim; Levdansky, Emma; Greenstein, Shulamit; Shadkchan, Yana; Osherov, Nir

    2008-03-01

    The Aspergillus nidulans genes cetA (AN3079.2) and calA (AN7619.2) encode a novel class of fungal thaumatin-like proteins of unknown function. Deletion of cetA does not result in an observable phenotype [Greenstein, S., Shadkchan, Y., Jadoun, J., Sharon, C., Markovich, S., Osherov, N., 2006. Analysis of the Aspergillus nidulans thaumatin-like cetA gene and evidence for transcriptional repression of pyr4 expression in the cetA-disrupted strain. Fungal Genet. Biol. 43, 42-53]. We prepared knockout calA and calA/cetA A. nidulans strains. The calA mutants were phenotypically identical to the wild-type. In contrast, the cetA/calA double mutant showed a synthetic lethal phenotype suggesting that the two genes affect a single function or pathway: most of its conidia were completely inhibited in germination. Many collapsed and underwent lysis. A few showed abnormal germination characterized by short swollen hyphae and abnormal hyphal branching. Nongerminated conidia contained a single condensed nucleus suggesting a block in early germination. This is the first functional analysis of the novel cetA/calA family of thaumatin-like genes and their role in A. nidulans conidial germination. We show that CETA and CALA are secreted proteins that together play an essential role in early conidial germination. PMID:17703972

  20. Vegetation and Climate Variations at Taibai, Qinling Mountains in Central China for the Last 3 500 cal BP

    Institute of Scientific and Technical Information of China (English)

    Xiao-Qiang LI; John DODSON; Jie ZHOU; Su-Min WANG; Qian-Li SUN

    2005-01-01

    Pollen records of two swamp sections, located at Taibai Mountain, the highest peak in the Qinling Mountains of central China, show variations of vegetation and climate for the last 3 500 cal BP. The pollen assemblage at the Foyechi and Sanqingchi sections and the surface soil pollen allowed us to reconstruct a high-altitude vegetation history at Taibai Mountain for the first time. The data indicated that there was a cold-dry climate interval between 3 500 and 3 080 cal BP and a relatively warm and wet period compared with the present from 3 080 to 1 860 cal BP. The warmest period in the late Holocene on Taibai Mountain was from 1 430 to 730 cal BP, with an approximate 2℃ increase in mean annual temperature compared with today.There was a relatively cool-dry climate interval from 730 to 310 cal BP. After 310 cal BP, a mountain tundra vegetation developed again and the position of the modern tree line was established.

  1. Composição centesimal e valor calórico de alimentos de origem animal Proximate food composition and caloric value of foods from animal origen

    Directory of Open Access Journals (Sweden)

    Elizabeth A.F.S TORRES

    2000-08-01

    Full Text Available Dados sobre composição de alimentos são importantes para inúmeras atividades, porém são escassos ou inexistentes em nosso país. O presente trabalho teve como objetivo determinar o valor calórico dos alimentos de origem animal comumente usados na dieta: carne, leite e ovos a fim de compará-los com os dados das tabelas de composição centesimal mais utilizadas por profissionais da área. Observou-se que de um modo geral, ocorrem variações entre os valores das tabelas consultadas e os analisados, sendo estes menores para ovos, seguidos de laticínios, carnes suínas, carnes bovinas e aves. Salientamos portanto, a importãncia de obtenção dados sobre a composição de alimentos condizentes com diferenças regionais do Brasil, visto que a maioria das tabelas disponíveis são compilações de dados internacionais.Proximate food composition data are very important to any professionals of food science and human nutrition area. In Brazil they are rare or do not exist. The food composition of items, of animal origin, usually consumed in the diet: meat, milk e eggs, were analyzed in order to determine their caloric value. After that they were compared with the data in the Tables of Food Composition (TFC commonly used to our professionals. It was observed that there are smaller differences in the values obtained for eggs, than milk, pork, beef, chicken. Although significant difference was not detected between determined caloric values and the ones from TFC, these report should be considered to professionals that use the TFC.

  2. Fisiologia do estresse calórico e a utilização de eletrólitos em frangos de corte Heat stress physiology and eletrolites for broilers

    Directory of Open Access Journals (Sweden)

    Sebastião Aparecido Borges

    2003-10-01

    Full Text Available Várias alterações metabólicas e fisiológicas são desencadeadas em frangos de corte submetidos a altas temperaturas ambientais, o que pode acarretar em grandes perdas no desempenho e na imunocompetência destas aves. Além das técnicas de controle ambiental estarem sendo freqüentemente empregadas para a redução do impacto negativo do estresse calórico sobre o desempenho das aves, outras medidas estão constantemente sendo estudadas. Nos últimos anos, o manejo nutricional adequado também tem demonstrado ser efetivo como medida preventiva para o estresse calórico, pois o funcionamento do sistema termorregulador do frango (produção de calor, rotas evaporativas e não evaporativas de dissipação de calor pode ser influenciado pela dieta, em especial, o estabelecimento de adequados balanços eletrolíticos, devido a sua importância fisiológica no mecanismo do estresse calórico. Assim, os mecanismos nutricionais devem ser reavaliados como uma ferramenta no controle desta disfunção metabólica das aves.High ambient temperature could result in numerous physiological and metabolic perturbations on broilers chicken with consequently adversely impact in broilers performance and immune response. Though the environmental control technique have been frequently useful for reduce the negative impact of heat stress in poultry performance, other alternative have been studied. Lately, the nutritional manipulation is also used for reducing the heat stress, once the most part of thermobalance components of broiler (heat production, evaporative and nonevaporative heat dissipation routes could be manipulated though the diet. Specially, the eletrolitic balance have fundamental importance in physiological stress mechanism and for this way should be considered as a tool in control of this metabolic dysfunction in birds.

  3. Influencia del tratamiento «a fuego» en las características del estuco tradicional con cal

    Directory of Open Access Journals (Sweden)

    González-Yunta, F.

    2015-03-01

    Full Text Available This research advances in the attempt to recover the traditional technique of stucco by fire; paradigm of indoor decoration until half of 20th century due to its high quality marbled imitations. On its implementation process, it was used lime mortars with marble aggregates, mineral pigments and greases. With these materials, masses were prepared and extended into the walls, they were painted in fresco and ended with the passage of a heated metal tool. As with any other technique, the time passing over has blurred the knowledge on the subject, making very difficult the preservation or restoration of examples in our heritage. Despite of the limited literature, the process has been recovered; subjecting the samples prepared at different trials that have characterized the finished, both in its merits and its conferred characteristics by finally protecting the samples with a layer of wax, as was done traditionally.Esta investigación avanza en el intento de recuperar la técnica tradicional del estuco a fuego, paradigma de la decoración de espacios interiores hasta la mitad del s. XX por sus imitaciones marmóreas de gran calidad. Para ejecutarlos se utilizaban morteros de cal con áridos de mármol, pigmentos minerales y grasas; con estos materiales se preparaban y tendían las masas, se pintaban al fresco y se terminaban con el paso de una herramienta metálica caliente. Como sucede con otras técnicas, el paso del tiempo ha difuminado los conocimientos sobre la materia, haciendo muy difícil la conservación o restauración de los ejemplos en nuestro patrimonio. A partir de la escasa bibliografía existente se ha recuperado el proceso, sometiendo las muestras elaboradas a diferentes ensayos que han caracterizado el acabado final, tanto en sus características intrínsecas como en las que le son conferidas al proteger finalmente las muestras con una capa de cera, tal y como se realizaba tradicionalmente.

  4. Voz sobre frame relay

    OpenAIRE

    D´Elia, Gabriel Anibal

    2000-01-01

    Esta tesis trata el tema de VOFR, desde la digitalización de la voz hasta su transmisión a través de dicha red, así también como la comparación con otros medios de transporte como VOIP. Dada las características del protocolo frame relay y su disponibilidad se eligió como el medio más apropiado para la transmisión de voz y datos en forma integrada sobre una misma red. El trabajo comienza con una breve explicación de la voz, su digitalización y forma actual de transmisión a través de una red di...

  5. Excertos sobre o sedentarismo

    Directory of Open Access Journals (Sweden)

    Alexandre Palma

    2014-09-01

    Full Text Available O sedentarismo tem sido tratado como algo perfeitamente determinável, objetivo e, portanto, que pode ser apreendido. Por outro lado, o conceito de sedentarismo ainda permanece questionável e, por conseguinte, os instrumentos mostram-se inconsistentes. Neste sentido, o objetivo do presente estudo foi mostrar que diferentes discursos de verdade vêm concorrendo por esse conceito, o que nos motiva a pensar qual é a verdade ou, até mesmo, se há alguma verdade sobre ele. Após apresentarmos diferentes possibilidades de compreender o sedentarismo, através do uso de aforismos, entendemos que postular um discurso como verdade talvez apenas signifique que as pessoas nele creem e que há uma vontade de verdade como uma vontade voltada para o poder.

  6. CalTOX, a multimedia total exposure model for hazardous-waste sites

    International Nuclear Information System (INIS)

    CalTOX has been developed as a spreadsheet model to assist in health-risk assessments that address contaminated soils and the contamination of adjacent air, surface water, sediments, and ground water. The modeling effort includes a multimedia transport and transformation model, exposure scenario models, and efforts to quantify and reduce uncertainty in multimedia, multiple-pathway exposure models. This report provides an overview of the CalTOX model components, lists the objectives of the model, describes the philosophy under which the model was developed, identifies the chemical classes for which the model can be used, and describes critical sensitivities and uncertainties. The multimedia transport and transformation model is a dynamic model that can be used to assess time-varying concentrations of contaminants introduced initially to soil layers or for contaminants released continuously to air or water. This model assists the user in examining how chemical and landscape properties impact both the ultimate route and quantity of human contact. Multimedia, multiple pathway exposure models are used in the CalTOX model to estimate average daily potential doses within a human population in the vicinity of a hazardous substances release site. The exposure models encompass twenty-three exposure pathways. The exposure assessment process consists of relating contaminant concentrations in the multimedia model compartments to contaminant concentrations in the media with which a human population has contact (personal air, tap water, foods, household dusts soils, etc.). The average daily dose is the product of the exposure concentrations in these contact media and an intake or uptake factor that relates the concentrations to the distributions of potential dose within the population

  7. Contraintes et enjeux de développement de la Nouvelle-Calédonie

    Directory of Open Access Journals (Sweden)

    Christian Jost

    2010-02-01

    Full Text Available En 2008 a été lancée en Nouvelle-Calédonie une vaste consultation pour élaborer un Schéma d’Aménagement et de Développement du territoire à l’horizon 2025. Si l’économie calédonienne a connu une forte croissance pendant plus d’une décennie, pouvant soutenir les besoins de la population et les investissements, le grand défi d’aujourd’hui réside dans la capacité à construire une communauté de destin basée sur une reconnaissance d’aspirations multiculturelles et sur un projet commun. Lancé dix ans après l’Accord de Nouméa qui le prévoyait, le S.A.D. est cette chance qu’ont les Néo-Calédoniens d’écrire enfin leur avenir ensemble. La réflexion stratégique globale et la mise en place d’une politique générale restent toutefois encore à mettre en place.In 2008 a vast consultation was launched in New Caledonia aimed at establishing a development plan for the territory, directed at the year 2025. If the Caledonian economy has experienced high growth over the past decade, thereby satisfying population and investment needs, the current challenge resides in the capacity to build the society of the future based on the recognition of multi-cultural aspirations and a shared project. Envisaged by the Accord de Nouméa and launched ten years later, the SAD offers all New Caledonians the opportunity to plan the future together. The over-arching strategic reflection and the creation of the broad politic foundations for the project have yet, however, to be determined.

  8. Gale Digital Collections: Ray Abruzzi Interviewed by Luisa Calè and Ana Parejo Vadillo

    Directory of Open Access Journals (Sweden)

    Ray Abruzzi

    2015-12-01

    Full Text Available This interview addresses the commercial dimensions of the nineteenth-century digital archive. Luisa Calè and Ana Parejo Vadillo ask Ray Abruzzi, Vice President and Publisher for 'Gale Digital Collections' at Gale, about the company’s origins, its commercial approach to digital collections, and the challenges of digitization. In the context of the open access movement, the architecture of participation, and crowdsourcing, Abruzzi discusses how the company works with academic partners and interfaces with other digital libraries and platforms.

  9. Terracotas de Calés en el Museo Arqueológico Nacional de Madrid

    OpenAIRE

    J. M. BLÁZQUEZ

    2009-01-01

    El Museo Arqueológico Nacional de Madrid exhibe entre sus magníficas colecciones una compuesta de numerosas terracotas traídas de Calés en el siglo pasado por el Marqués de Salamanca que nos hemos propuesto estudiar y a la que hemos dedicado varios trabajos ya. Colecciones similares se conservan en los museos de Lecce, Capua, Louvre, Leide, British Museum, Palazzo dei Conservatori, Villa Giulia, Nacionale Romano, Ny Carbsberg Glyptothek, Museo Universitario de Zurich, Museum für antike Kleink...

  10. On the development of the final optical multiplexer board prototype for the TileCal experiment

    CERN Document Server

    González, V; Torres, J; Soret, J; Castelo, J; Castillo, V; Cuenca, C; Ferrer, A; Fullana, E; Higón, E; Munar, A; Poveda, J; Ruíz, A; Salvachúa, B; Solans, C; Valero, A; Valls, J A

    2007-01-01

    This paper describes the architecture of the final optical multiplexer board for the TileCal experiment. The results of the first VME 6U prototype have led to the definition of the final block diagram and functionality of this prototype. Functional description of constituent blocks and the state of the work currently undergoing at the Department of Electronic Engineering, in collaboration with IFIC-Valencia, is presented. As no board is yet produced, no experimental results are presented but, nevertheless, design issues that have been taking into account as component placement and signal integrity issues will be detailed.

  11. A radiation tolerant Data link board for the ATLAS TileCal upgrade

    CERN Document Server

    Bohm, Christian; The ATLAS collaboration; Muschter, Steffen Lothar; Silverstein, Samuel; Valdes Santurio, Eduardo

    2015-01-01

    We describe the latest (last?) full functionality revision of the high-speed data link board for the ATLAS TileCal phase 2 upgrade. It is highly redundant, using two Kintex-7 FPGAs and two Molex QSFP+ electro-optic modules. The FPGAs are remotely configured through two radiation-hard CERN GBTx deserialisers (GBTx), which also provide the LHC-synchronous system clock. The four QSFP+ uplinks transmit data at 10 Gbps. Virtually all single-point error modes are removed, and a combination of triple-mode redundancy, internal and external scrubbing will adequately protect against radiation-induced errors.

  12. In silico screening of 393 mutants facilitates enzyme engineering of amidase activity in CalB

    DEFF Research Database (Denmark)

    Hediger, Martin Robert; De Vico, Luca; Rannes, Julie Bille;

    2013-01-01

    Our previously presented method for high throughput computational screening of mutant activity (Hediger et al., 2012) is benchmarked against experimentally measured amidase activity for 22 mutants of Candida antarctica lipase B (CalB). Using an appropriate cutoff criterion for the computed barriers......, the qualitative activity of 15 out of 22 mutants is correctly predicted. The method identifies four of the six most active mutants with ≥3-fold wild type activity and seven out of the eight least active mutants with ≤0.5-fold wild type activity. The method is further used to screen all sterically possible (386...

  13. Upgrade Analog Readout and Digitizing System for ATLAS TileCal Demonstrator

    CERN Document Server

    Tang, F; The ATLAS collaboration; Akerstedt, H; Biot, A; Bohm, C; Carrio, F; Drake, G; Hildebrand, K; Muschter, S; Oreglia, M; Paramonov, A

    2013-01-01

    A potential upgrade for the front-end electronics and signal digitization and data acquisition system of the ATLAS hadron calorimeter for the high luminosity Large Hadron Collider (HL-LHC) is described. A Demonstrator is being built to readout a slice of the TileCal detector. The on-detector electronics includes up to 48 Analog Front-end Boards for PMT analog signal processing, 4 Main Boards for data digitization and slow controls, 4 Daughter Boards with high speed optical links to interface the on-detector and off-detector electronics. Two super readout driver boards are used for off-detector data acquisition and fulfilling digital trigger.\

  14. Mic Check: How the 99% Pitched a Movement from Occupy Wall Street to Occupy Cal

    OpenAIRE

    Bintliff, Jacob

    2012-01-01

    The University of California, Berkeley, became a site of the Occupy Movement in fall 2011. On November 9, the university found itself in the company of financial hubs, civic centers, and parks and plazas the world over when Sproul Plaza was re-appropriated by the sleeping bags and “mic checks” that came to symbolize the disenfranchised majority, "the 99%." Occupy Cal was immediately subject to a brutal suppression of student protest by the police, as both students and the university administr...

  15. A Hybrid Readout System for the ATLAS TileCal Phase 2 Upgrade Demonstrator

    CERN Document Server

    Bohm, C; The ATLAS collaboration

    2012-01-01

    The ATLAS Tile Calorimeter phase 2 upgrade demonstrator project aims at installing hybrid on-detector electronic systems replacing 1-4 adjacent TileCal electronics drawers in ATLAS starting at the end of the long shut down of LHC 2013 to 2014. The new drawers will combine a fully functional phase 2 system with circuitry making them compatible with the present system. In the design we have emphasized redundancy and reliability. Data from and commands to the calorimeter are transferred via high speed (5 or 10 Gb/s) optical links.

  16. Morteros de cal : aplicaci??n en el patrimonio hist??rico

    OpenAIRE

    Cazalla V??zquez, Olga

    2002-01-01

    Los morteros de cal, ha sido un material de construcci??n muy utilizado en sus m??ltiples funciones a lo largo de la historia. Se constru??a tras una selecci??n especialmente cuidada de sus materias primas y eran totalmente compatibles con el resto de elementos de f??brica. Hoy en d??a, se tiende a reemplazarlos por morteros de cemento, que aunque tienen muy buenas propiedades f??sico-mec??nicas, son totalmente incompatibles con los dem??s elementos de f??brica, ya que adem??s producen un fue...

  17. L0 Project: Monitoring H1 Triggers with SpaCal

    OpenAIRE

    Barrelet, E.; Acounis, S; Durant, O.

    2001-01-01

    We have built a VME module using H1’s ADC and BaBar TDC interfaced to H1’s 29K processor. It is used to monitor SpaCal trigger, energy sums and trigger elements, by reading up to 130Kevents/s. The timing resolution is found to be surprisingly good ( »1ns) for energy sum signals. The performances under various beam conditions are shown, including a first study of the “hotspot” counters designed as a veto against e-beam background.

  18. Two-Loop Iteration of Five-Point ${\\cal N}=4$ Super-Yang-Mills Amplitudes

    OpenAIRE

    Bern, Z.; Czakon, M.; Kosower, David,; Roiban, R.; Smirnov, V.A.

    2006-01-01

    URL: http://www-spht.cea.fr/articles/T06/032 http://fr.arxiv.org/abs/hep-th/0604074 International audience We confirm by explicit computation the conjectured all-orders iteration of planar maximally supersymmetric ${\\cal N}=4$ Yang-Mills theory in the nontrivial case of five-point two-loop amplitudes. We compute the required unitarity cuts of the integrand and evaluate the resulting integrals numerically using a Mellin--Barnes representation and the automated package of M.~Czakon (hep-p...

  19. Mapping Site Response Parameters on Cal Poly Pomona Campus Using the Spectral Ratio Method

    Science.gov (United States)

    HO, K. Y. K.; Polet, J.

    2014-12-01

    Site characteristics are an important factor in earthquake hazard assessment. To better understand site response differences on a small scale, as well as the seismic hazard of the area, we develop site response parameter maps of Cal Poly Pomona campus. Cal Poly Pomona is located in southern California about 40 km east of Los Angeles, within 50 km of San Andreas Fault. The campus is situated on top of the San Jose Fault. With about twenty two thousand students on campus, it is important to know the site response in this area. To this end, we apply the Horizontal-to-Vertical (H/V) spectral ratio technique, which is an empirical method that can be used in an urban environment with no environmental impact. This well-established method is based on the computation of the ratio of vertical ambient noise ground motion over horizontal ambient noise ground motion as a function of frequency. By applying the spectral ratio method and the criteria from Site Effects Assessment Using Ambient Excitations (SESAME) guidelines, we can determine fundamental frequency and a minimum site amplification factor. We installed broadband seismometers throughout the Cal Poly Pomona campus, with an initial number of about 15 sites. The sites are approximately 50 to 150 meters apart and about two hours of waveforms were recorded at each site. We used the Geopsy software to make measurements of the peak frequency and the amplitude of the main peak from the spectral ratio. These two parameters have been determined to be estimates of fundamental frequency and a minimum site amplification factor, respectively. Based on the geological map from the U.S. Geological Survey (USGS) and our data collected from Cal Poly Pomona campus, our preliminary results suggest that the area of campus that is covered by alluvial fan material tends to have a single significant spectral peak with a fundamental frequency of ~1Hz and a minimum amplification factor of ~3.7. The minimum depth of the surface layer is about 56

  20. Hitachi product data management system toward the 21st century by CALS approach

    International Nuclear Information System (INIS)

    HIPDM21 (Hitachi Product Data Management System for the 21st century) is a comprehensive computer information management system which has been developed for the purpose of plant life cycle business support in terms of the electronics information exchange and sharing between the disciplines using the product data management technology. The system consists of core systems (Engineering Data Control System, Integrated Commodity Database system, and Document Management System) and business application systems. In the present development phase, the system is being enhanced to support CALS standards including EDT, SGML, and STEP, and to support information exchange and sharing with outside the company including clients, construction companies, and domestic/international vendors. (author)

  1. A prototype for the upgraded readout electronics for TileCal

    CERN Document Server

    Eriksson, D; The ATLAS collaboration; Bohm, C; Kavianipour, H; Muschter, S; Oreglia, M; Tang, F

    2011-01-01

    Upgrade plans for ATLAS hadronic calorimeter (TileCal) include full readout of all data to the counting room. We are developing a possible implementation of the future readout and trigger electronics aiming at a full functional demonstrator during Phase 0, starting from an existing functional test slice assembled using a combination of prototypes and emulators. Presently the first version of two PCBs in charge of digitization, control and communication are being developed. The design is highly redundant, using FPGAs with fault tolerant firmware for control and protocol conversion. Communication between on and off detector electronics is implemented via high speed optical links.

  2. Ward and Nielsen Identities for ABJM Theory in ${\\cal N}=1$ Superspace

    CERN Document Server

    Upadhyay, Sudhaker

    2016-01-01

    The structures and the associated gauge algebra of ABJM theory in ${\\cal N}=1$ superspace are reviewed. We derive the Ward identities of the theory in the class of Lorentz-type gauges at quantum level to justify the renormalizability of the model. We compute the Nielsen identities for the two-point functions of the theory with the help of enlarged BRST transformation. The identities are derived in ABJM theory to ensure the gauge independence of the physical poles of the Green's functions.

  3. Aerodynamic design of the Cal Poly Da Vinci Human-Powered Helicopter

    Science.gov (United States)

    Larwood, Scott; Saiki, Neal

    1990-01-01

    This paper will discuss the methodology used in designing the rotor and drive propellers for the third generation Cal Poly Da Vinci Human-Powered Helicopter. The rotor was designed using a lifting surface, uniform inflow hover analysis code and the propeller was designed using a minimum induced-loss method. Construction, geometry, and operating considerations are discussed as they impact the designs. Optimization of the design performance is also explained. The propellers were tested in a wind tunnel and results are compared with theoretical data. Successful flight tests of the Da Vinci III are discussed.

  4. Abelian tensor hierarchy in 4D ${\\cal N}=1$ conformal supergravity

    CERN Document Server

    Aoki, Shuntaro; Yamada, Yusuke; Yokokura, Ryo

    2016-01-01

    We consider Abelian tensor hierarchy in four-dimensional ${\\cal N}=1$ supergravity in the conformal superspace formalism, where the so-called covariant approach is used to antisymmetric tensor fields. We introduce $p$-form gauge superfields as superforms in the conformal superspace. We solve the Bianchi identities under the constraints for the superforms. As a result, each of form fields is expressed by a single gauge invariant superfield. The action of superforms is shown with the invariant superfields. We also show the relation between the superspace formalism and the superconformal tensor calculus.

  5. Transfer of Air Force technical procurement bid set data to small businesses, using CALS and EDI: Test report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-08-15

    This report documents a test transfer of three Air Force technical procurement bid sets to one large and twelve small businesses, using the Department of Defense (DoD) Continuous Acquisition and Life-cycle Support (CALS) and ANSI ASC X12 Electronic Data Interchange (EDI) standards. The main goal of the test was to evaluate the effectiveness of using CALS technical data within the context of the DoD`s EDI-based standard approach to electronic commerce in procurement, with particular emphasis on receipt and use of the data by small contractors. Air Force procurement data was provided by the Sacramento Air Logistics Center at McClellan Air Force Base; the manufacturing participants were selected from among McClellan`s ``Blue Ribbon`` contractors, located throughout the US. The test was sponsored by the Air Force CALS Test Network, headquartered at Wright-Patterson Air Force Base. The test successfully demonstrated the technical feasibility of including CALS MIL-R-28002 (Raster) engineering data in an EDI Specification/Technical Information transaction set (ANSI ASC X12 841) when issuing electronic requests for quotation to small businesses. In many cases, the data was complete enough for the contractor participant to feel comfortable generating a quote. Lessons learned from the test are being fed back to the CALS and EDI standards organizations, and to future implementors of CALS-EDI based acquisition or contracting systems, which require the transfer of technical information, such as engineering data, manufacturing process data, quality test data, and other product or process data, in the form of a CALS or other digital datafile.

  6. REMOCIÓN DE MICROORGANISMOS PATÓGENOS PRESENTES EN UN LICOR MIXTO BAJO CONDICIONES DE LABORATORIO EMPLEANDO FILTROS EMPACADOS EN ZEOLITA NATURAL REMOVAL OF PATHOGENIC MICROORGANISMS PRESENT IN MIXED LIQUOUR UNDER LABORATORY CONDITIONS BY USING FILTERS PACKED IN NATURAL ZEOLITE

    Directory of Open Access Journals (Sweden)

    Diana Rocío Acevedo Cifuentes

    2012-12-01

    Full Text Available En este artículo, se presentan los resultados obtenidos en la remoción de coliformes totales, coliformes fecales y salmonella-shigella, presentes en un licor mixto proveniente de la planta de tratamiento de aguas residuales San Fernando (Medellín, Colombia, mediante el uso de una batería de filtros empacados en zeolita clinoptilolita. La experimentación se desarrolló bajo condiciones controladas de caudal y pH, a temperatura ambiente. Se empleó zeolita natural tipo clinoptilolita la cual se activó con solución salina y secado, se empacó en una batería compuesta por dos filtros, uno de flujo descendente y otro de flujo ascendente, para facilitar el contacto de la solución contaminada y el material adsorbente (zeolita. Se realizaron cinco ensayos independientes y al final de cada uno de ellos se lavó y se activó el material zeolítico antes de comenzar el siguiente. En cada ensayo se tomaron tres muestras. Se encontró que la eficiencia de los filtros bajo las condiciones específicas de diseño fue significativamente alta en la remoción de los patógenos evaluados, y el porcentaje de remoción fue independiente del valor de la concentración a la entrada del filtro. Además, la eficiencia en la remoción de los patógenos evaluados no dependió del tipo de microorganismo.This article displays results obtained when total coliforms, fecal coliforms, and Salmonella shigella were removed from mixed liquor taken from San Fernando waste water treatment plant in Medellín, Colombia, by using a battery of filters packed in zeolite clinoptilolite. Experiments were developed under controlled conditions of flow and pH at room temperature. Natural clinoptilolite-type zeolite was used activated with saline solution and drying; it was packed in a battery consisting of two filters (a downward-flow filter and an upward-flow filter in order to make contact of contaminated solution and adsorbent material (zeolite easier. Five independent tests were

  7. Non-Hermitian ${\\cal PT}$-symmetric relativistic quantum theory in an intensive magnetic field

    CERN Document Server

    Rodionov, V N

    2016-01-01

    We develop relativistic non-Hermitian quantum theory and its application to neutrino physics in a strong magnetic field. It is well known, that one of the fundamental postulates of quantum theory is the requirement of Hermiticity of physical parameters. This condition not only guarantees the reality of the eigenvalues of Hamiltonian operators, but also implies the preservation of the probabilities of the considered quantum processes. However as it was shown relatively recently (Bender, Boettcher 1998), Hermiticity is a sufficient but it is not a necessary condition. It turned out that among non-Hermitian Hamiltonians it is possible to allocate a number of such which have real energy spectra and can ensure the development of systems over time with preserving unitarity. This type of Hamiltonians includes so-called parity-time (${\\cal PT}$) symmetric models which is already used in various fields of modern physics. The most developed in this respect are models, which used in the field of ${\\cal PT}$-symmetric op...

  8. The TileCal Online Energy Estimation for the Next LHC Operation Period

    CERN Document Server

    Peralva, B S; The ATLAS collaboration

    2014-01-01

    The ATLAS Tile Calorimeter (TileCal) is the detector used in the reconstruction of hadrons, jets, muons and missing transverse energy from the proton-proton collisions at the Large Hadron Collider (LHC). It covers the central part of the ATLAS detector (|η|<1.6). The energy deposited by the particles is read out by approximately 5,000 cells, with double readout channels. The signal provided by the readout electronics for each channel is digitized at 40 MHz and its amplitude is estimated by an optimal filtering algorithm, which expects a single signal with a well-defined shape. However, the LHC luminosity is expected to increase leading to signal pile-up that deforms the signal of interest. Due to limited resources, the current DSP-based hardware setup does not allow the implementation of sophisticated energy estimation methods that deal with the pile-up. Therefore, the technique to be employed for online energy estimation in TileCal for next LHC operation period must be based on fast filters such as the M...

  9. A Discussion on Personnel Exposure to Posttest Byproducts from a 50-cal. Light Gas Gun

    Science.gov (United States)

    Henderson, Don; Rodriquez, Karen

    2007-01-01

    In January of 2002, employees working in the Hypervelocity Test Facility (HTF) at White Sands Test Facility (WSTF) began to notice common physical complaints. These included loss of smell, loss of taste, skin irritation, a burning sensation of the mucus membranes, and redness and chapping of the lips. These conditions extended to home during the weekends and throughout holiday breaks as well. Concerns about air contaminants were raised with regard to the operation of the .50-cal. two-stage light gas gun (2SLGG). Employees suspected that these conditions might be caused by air contaminants from small leaks at the gun pump tube joint at the breech, and exhaust gas entrainment into the WAC systems. The WSTF Industrial Hygienist (IH) was notified and samples were collected using the MIRAN infrared spectrometer (real time) air sampler on 08 January 2002 at the SO-cal. gun. The results from this screening test suggested the need for more detailed investigations with analytical sampling and analysis.

  10. The Return of the King: No-Scale ${\\cal F}$-$SU(5)$

    CERN Document Server

    Li, Tianjun; Nanopoulos, Dimitri V

    2016-01-01

    We revisit the viable parameter space in No-Scale ${\\cal F}$-$SU(5)$, examining the Grand Unified Theory within the context of the prevailing gluino mass limits established by the LHC. The satisfaction of both the No-Scale boundary condition and the experimentally measured Standard Model (SM) like Higgs boson mass requires a lower limit on the gluino mass in the model space of about 1.9 TeV, which maybe not coincidentally is the current LHC supersymmetry search bound. This offers a plausible explanation as to why a supersymmetry signal has thus far not been observed at the LHC. On the contrary, since the vector-like flippon particles are relatively heavy due to the strict condition that the supersymmetry breaking soft term $B_{\\mu}$ must vanish at the unification scale, we also cannot address the recently vanished 750 GeV diphoton resonance at the 13 TeV LHC. Therefore, No-Scale ${\\cal F}$-$SU(5)$ returns as a King after the spurious 750 GeV diphoton excess was gone with the wind.

  11. Optical link card design for the phase II upgrade of TileCal experiment

    CERN Document Server

    Carrio, F; Ferrer, A; Gonzalez, V; Higon, E; Marin, C; Moreno, P; Sanchis, E; Solans, C; Valero, A; Valls, J

    2011-01-01

    This paper presents the design of an optical link card developed in the frame of the R&D activities for the phase 2 upgrade of the TileCal experiment. This board, that is part of the evaluation of different technologies for the final choice in the next years, is designed as a mezzanine that can work independently or be plugged in the optical multiplexer board of the TileCal backend electronics. It includes two SNAP 12 optical connectors able to transmit and receive up to 75 Gb/s and one SFP optical connector for lower speeds and compatibility with existing hardware as the read out driver. All processing is done in a Stratix II GX field-programmable gate array (FPGA). Details are given on the hardware design, including signal and power integrity ana lysis, needed when working with these high data rates and on firmware development to obtain the best performance of the FPGA signal transceivers and for the use of the GBT protocol.

  12. Exceptional points of degeneracy and $\\cal{PT}$-symmetry in photonic coupled chains of scatterers

    CERN Document Server

    Othman, Mohamed A K; Capolino, Filippo

    2016-01-01

    We demonstrate the existence of exceptional points of degeneracy (EPD) of periodic eigenstates in non-Hermitian coupled chains of dipolar scatterers. Guided modes supported by these structures can exhibit an EPD in their dispersion diagram at which two or more Bloch eigenstates coalesce, in both their eigenvectors and eigenvalues. We show a second-order modal EPD associated with the parity-time ($\\cal{PT}$) symmetry condition, at which each particle pair in the double chain exhibits balanced gain and loss. Furthermore, we also demonstrate a fourth-order EPD occurring at the band edge. Such degeneracy condition was previously referred to as a degenerate band edge in lossless anisotropic photonic crystals. Here, we rigorously show it under the occurrence of gain and loss balance for a discrete guiding system. We identify a more general regime of gain and loss balance showing that $\\cal{PT}$-symmetry is not necessary to realize EPDs. Furthermore, we investigate the degree of detuning of the EPD when the geometri...

  13. The TileCal Energy Reconstruction for LHC Run2 and Future Perspectives

    CERN Document Server

    Seixas, Jose; The ATLAS collaboration

    2015-01-01

    The Tile Calorimeter (TileCal) is the main hadronic calorimeter of ATLAS and it covers the central part of the detector (|η|<1.6). The energy deposited by the particles in TileCal is read out by approximately 10,000 channels. The signal provided by the readout electronics for each channel is digitized at 40 MHz and its amplitude is estimated by an optimal filtering algorithm. The increase of LHC luminosity leads to signal pile-up that deforms the signal of interest and compromises the amplitude estimation performance. This work presents the proposed algorithm for energy estimation during LHC Run 2. The method is based on the same approach used during LHC Run 1, namely the Optimal Filter (OF). The only difference is that the signal baseline (pedestal) will be subtracted from the received digitized samples, while in Run 1 this quantity was estimated on an event-by-event basis. The pedestal value is estimated through special calibration runs and it is stored in a data base for online and offline usage. Addit...

  14. The TileCal Energy Reconstruction for LHC Run2 and Future Perspectives

    CERN Document Server

    Seixas, Jose; The ATLAS collaboration

    2015-01-01

    The Tile Calorimeter (TileCal) is the main hadronic calorimeter of ATLAS and it covers the central part of the detector (|eta|<1.6). The energy deposited by the particles in TileCal is read out by approximately 10,000 channels. The signal provided by the readout electronics for each channel is digitized at 40 MHz and its amplitude is estimated by an optimal filtering algorithm. The increase of LHC luminosity leads to signal pile-up that deforms the signal of interest and compromises the amplitude estimation performance. This work presents the proposed algorithm for energy estimation during LHC Run 2. The method is based on the same approach used during LHC Run 1, namely the Optimal Filter (OF). The only difference is that the signal baseline (pedestal) will be subtracted from the received digitized samples, while in Run 1 this quantity was estimated on an event-by-event basis. The pedestal value is estimated through special calibration runs and it is stored in a data base for online and offline usage. Addi...

  15. The TileCal Online Energy Estimation for the Next LHC Operation Period

    CERN Document Server

    Peralva, B S; The ATLAS collaboration; Cerqueira, A S; Seixas, J M

    2014-01-01

    This work presents a study on the TileCal online energy estimation for the next LHC operation period (Run2). Due to hardware limitation, the algorithm that performs the online energy estimation must remain based on the linear and fast Optimal Filter (OF) technique, which envisages the use of the background covariance matrix in its design. During Run1, TileCal made use of an identity matrix to describe and the background covariance matrix, which showed to be a reasonable approximation for the low luminosity scenario. Under such conditions, the background for most of its cells comprised mainly electronic noise which can be approximated as a uncorrelated Gaussian process. However, as the pile-up introduces a non-Gaussian component to the background, the OF method presents larger variance and it becomes biased. The use of the background covariance matrix in the design of the OF weights is expected to improve the energy estimation performance. The results for the scenario considered show that for high occupancy ce...

  16. The TileCal Energy Reconstruction for LHC Run2 and Future Perspectives

    CERN Document Server

    Peralva, Bernardo Sotto-Maior

    2015-01-01

    The TileCal is the main hadronic calorimeter of ATLAS and it covers the central part of the detector ($|\\eta|$ < 1.6). The energy deposited by the particles in TileCal is read out by approximately 10,000 channels. The signal provided by the readout electronics for each channel is digitized at 40 MHz and its amplitude is estimated by an optimal filtering algorithm. The increase of LHC luminosity leads to signal pile-up that deforms the signal of interest and compromises the amplitude estimation performance. This work presents the proposed algorithm for energy estimation during LHC Run 2. The method is based on the same approach used during LHC Run 1, namely the Optimal Filter. The only difference is that the signal baseline (pedestal) will be subtracted from the received digitized samples, while in Run 1 this quantity was estimated on an event-by-event basis. The pedestal value is estimated through special calibration runs and it is stored in a data base for online and offline usage. Additionally, the backg...

  17. Chiral low-energy physics from squashed branes in deformed ${\\cal N}=4$ SYM

    CERN Document Server

    Steinacker, Harold C

    2015-01-01

    We discuss the low-energy physics which arises on stacks of squashed brane solutions of $SU(N)$ ${\\cal N}=4$ SYM, deformed by a cubic soft SUSY breaking potential. A brane configuration is found which leads to a low-energy physics similar to the standard model in the broken phase, assuming suitable VEV's of the scalar zero modes. Due to the triple self-intersection of the branes, the matter content includes that of the MSSM with precisely 3 generations and right-handed neutrinos. No exotic quantum numbers arise, however there are extra chiral superfields with the quantum numbers of the Higgs doublets, the $W,Z$, $e_R$ and $u_R$, whose fate depends on the details of the rich Higgs sector. The chiral low-energy sector is complemented by a heavy mirror sector with the opposite chiralities, as well as super-massive Kaluza-Klein towers completing the ${\\cal N}=4$ multiplets. The sectors are protected by two gauged global $U(1)$ symmetries.

  18. Upgrade of the Laser calibration system for the ATLAS hadronic calorimeter TileCal

    Science.gov (United States)

    van Woerden, Marius Cornelis

    2016-07-01

    We present in this contribution the new system for Laser calibration of the ATLAS hadronic calorimeter TileCal. The Laser system is a part of the three stage calibration apparatus designed to compute the calibration factors of the individual cells of TileCal. The Laser system is mainly used to correct for short term drifts of the readout of the individual cells. A sub-percent accuracy in the control of the calibration factors is required. To achieve this goal in the LHC Run2 conditions, a new Laser system was designed. The architecture of the system is described with details on the new optical line used to distribute Laser pulses in each individual detector module and on the new electronics used to drive the Laser, to read out optical monitors and to interface the system with the ATLAS readout, trigger and slow control. The LaserII system has been fully integrated into the framework used for measuring calibration factors and for monitoring data quality. First results on the Laser system performances studied are presented.

  19. Investigating Atmospheric Rivers using GPS TPW during CalWater 2015

    Science.gov (United States)

    Almanza, V.; Foster, J. H.; Businger, S.

    2015-12-01

    Ship-based Global Positioning System (GPS) receivers have been successful in obtaining millimeter accuracy total precipitable water (TPW). We apply this technique with a field experiment using a GPS meteorology system installed on board the R/V Ronald Brown during the CalWater 2015 project. The goal of CalWater is to monitor atmospheric river (AR) events over the Eastern Pacific Ocean and improve forecasting of the extreme precipitation events they can produce. During the 30-day cruise, TPW derived from radiosonde balloons released from the Ron Brown are used to verify the accuracy of shipboard GPS TPW. The results suggest that ship-based GPS TPW offers a cost-effective approach for acquiring accurate real-time meteorological observations of TPW in AR's over remote oceans, as well as near the coastlines where satellites algorithms have limited accuracy. The results have implications for augmenting operational observing networks to improve weather prediction and nowcasting of ARs, thereby supporting hazard response and mitigation efforts associated with coastal flooding events.

  20. Upgrade of the Laser Calibration System for the ATLAS Hadronic Calorimeter TileCal

    CERN Document Server

    Van Woerden, Marius Cornelis; The ATLAS collaboration

    2015-01-01

    We present in this contribution the new system for laser calibration of the ATLAS hadronic calorimeter TileCal. The laser system is a part of the three stage calibration apparatus designed to compute the calibration constants of the individual cells of TileCal. The laser system is mainly used to correct for short term (one month) drifts of the readout of the individual cells. A sub-percent accuracy in the control of the calibration constants is required to keep the systematics effects introduced by relative cell miscalibration below the irreducible systematics in determining the parameters of the reconstructed hadronic jets. To achieve this goal in the LHC Run 2 conditions, a new laser system was designed. The architecture of the system is described with details on the new optical line used to distribute laser pulses in each individual detector module and on the new electronics used to drive the laser, to readout the system optical monitors and to interface the system with the Atlas readout, trigger, and slow...

  1. Mass spectra in ${\\cal N}=1$ SQCD with additional colorless fields. Strong coupling regimes

    CERN Document Server

    Chernyak, Victor L

    2016-01-01

    We consider the ${\\cal N}=1$ $SU(N_c)$ SQCD-like (direct) theory (and its Seiberg's dual with $SU(N_F-N_c)$ dual colors), and with $N_F$ flavors of light quarks ${\\overline Q}_j, Q^i$ with the mass term in the superpotential $m_Q{\\rm Tr}({\\overline Q} Q),\\,\\, m_Q\\ll\\Lambda$. Besides, there are $N_F^2$ additional colorless but flavored fields $\\Phi^j_i$ with the large mass parameter $\\mu_{\\Phi}\\gg\\Lambda$. But now considered is the region $N_c+1cal N}=1$ SQCD-like theories can be in two standard phases only. These are either the HQ (heavy quark) phase where they are confined or the Higgs phase. It is shown that due to the strong powerlike RG evolution, the seemingly heavy and dynamically ...

  2. Sobre la muerte voluntaria

    Directory of Open Access Journals (Sweden)

    Juan Álvarez-Cienfuegos Fidalgo

    2012-03-01

    Full Text Available El problema de cómo morir en nuestra sociedad se ha convertido en una inquietud para los ciudadanos y la reflexión moral. Especialmcnte por dos razones: por el desarrollo de la tecnología médica y por el hecho de que la mayor parte de los fallecimientos tienen lugar fuera del hogar, donde tradicionalmente ocurra el deceso. El presente artículo tiene como objetivo acercarse a esta cuestión. Para ello, se parte de la autonomía del ciudadano, con derecho a decidir sobre lo que considera cuál sea su manera de vivir y de morir. A tal fin, se hace una breve introducción sobre el dolor, el suicidio y la muerte, desde un punto de vista antropológico, pasando, después, a mostrar las cuestiones relacionadas con el problema de la eutanasia, donde la atención se dirigirá, ante todo, al enjuiciamiento crítico del tenso equilibrio en el que se mantienen dos principios fundamentales de la bioética: el de no maleficencia y el de autonomía del ciudadano.The problem of how to die in modern society has become a concern for both the citizen and moral reflection for two reasons in particular: due to developments in medical technology, and because most deaths occur outside the honre, where they traditionaÍlY took place. This paper addresses this issue, starting from citizen autonomy, the right to decide on what s/he considers to be his or her way of living and dying. To this end, a brief introduction considers pain, suicide and death from an anthropological viewpoint. Questions related to the problem of euthanasia are then exposed, with particular attention to, above all the critical judgement of the tense balance in which two fundamental principies of bioethics are held, the principle of non-maleficence and that of citizen autonomy.

  3. Equivariant Fields in an $SU({\\cal N})$ Gauge Theory with new Spontaneously Generated Fuzzy Extra Dimensions

    CERN Document Server

    Kurkcuoglu, S

    2015-01-01

    We find new spontaneously generated fuzzy extra dimensions emerging from an $SU({\\cal N})$ Yang-Mills (YM) theory on a manifold ${\\cal M}$, which, for ${\\cal M}=M^4$, is a certain massive deformation the $N=4$ supersymmetric YM. The theory has six scalars transforming under the adjoint representation of $SU(\\cal N)$ and the $(1,0) \\oplus (0,1)$ of a global $SU(2) \\times SU(2)$. We consider the possibility that all these scalar fields involve a composite part, which are obtained from certain bilinears of another set of scalar fields. The latter are still in the adjoint of the $SU({\\cal N})$, but transform under the $(\\frac{1}{2},0) \\oplus (0, \\frac{1}{2})$ of the global symmetry group. A new vacuum solution, $S_F^{2\\, Int}\\times S_F^{2\\, Int}$, that may be expressed in terms of a particular direct sum of product of fuzzy spheres, is determined. Fluctuations about this vacuum have the structure of gauge fields over $S_F^{2\\, Int}\\times S_F^{2\\, Int}$ and enables us to interpret the emerging model as a $U(n)$ ga...

  4. Bioquímica sanguínea y concentración plasmática de corticosterona en pollo de engorde bajo estrés calórico

    Directory of Open Access Journals (Sweden)

    Elvis Alexander Díaz López

    2014-07-01

    Full Text Available Las altas temperaturas ambientales propician susceptibilidad al estrés calórico en los pollos de engorde, lo que genera cambios metabólicos. Se buscó determinar los cambios en la bioquímica sanguínea y la concentración plasmática de corticosterona del pollo de engorde sometido a estrés calórico crónico y a las condiciones de temperatura ambiental del piedemonte amazónico colombiano, sobre las concentraciones plasmáticas de corticosterona, glucosa, proteínas totales, albumina, globulina, sodio, cloro, potasio, magnesio, fósforo y calcio. Se utilizaron pollos machos de 2 estirpes de 21 días de edad, distribuidos en un diseño experimental irrestrictamente al azar, en un esquema bifactorial, con 4 tratamientos. Se hicieron 5 repeticiones por tratamiento y 25 animales por unidad experimental. Las aves fueron alimentadas con una dieta básica de maíz y torta de soya con 3,100 Kcal de EM y 19,5 % de proteína hasta los 42 días de edad. El factor estirpe no tuvo efecto en las variables evaluadas (p ≥ 0,05. No obstante, existió diferencia estadística significativa (p ≤ 0,05 en todas las variables evaluadas al ser comparadas las concentraciones de los metabolitos de las aves en condiciones de estrés calórico crónico con las de las aves expuestas a las condiciones de temperatura del piedemonte amazónico colombiano. Se concluyó que la bioquímica sanguínea sufrió modificaciones significativas bajo las 2 temperaturas experimentales, con mayor detrimento fisiológico de las aves con estrés calórico crónico. La concentración de corticosterona se constituyó en el indicador más sensible y constante de la condición fisiológica de estrés crónico por calor.

  5. Sobre el nombre "Quechua"

    Directory of Open Access Journals (Sweden)

    Rodolfo Cerrón-Palomino

    1985-06-01

    Full Text Available Uno de los primeros problemas con el que a menudo tropiezael estudioso de los idiomas ágrafos, como es el caso de las lenguasaborígenes de América, es el de su denominación (glotónimo.En la medida ,en que, por razones históricas, las noticias sobretales lenguas, y por consiguiente los primeros estudios sobre lasmismas, surgen a partir del contacto con los miembros de la civilización occidental, los nombres de los distintos idiomas, así comode los grupos étnicos que los manejan, son el resultado casi siempre arbitrario cie designaciones fortuitas hechas por viajeros, misiioneros y exploradores, quienes por lo general se basan, para ello, bien en descripciones físicas de los grupo étnicos, en ciertos indios geográficos que constituyen el habitat de los mismos, e incluso en prejuicios que se nutren de un marcado europocentrismo.

  6. Refletindo sobre idosos institucionalizado

    Directory of Open Access Journals (Sweden)

    Cenir Gonçalves Tier

    2004-06-01

    Full Text Available Trata-se de uma pesquisa qualitativa, descritiva que teve por objetivo identificar como vem sendo o relacionamento idoso-família, identificando os motivos que levaram os familiares a optarem pela institucionalização do seu idoso, obtendo-se também a visão da família sobre o cuidado no lar. Para coleta dos dados utilizou-se um instrumento com perguntas abertas. A coleta dos dados efetivou-se nos meses de agosto de 2002 a julho de 2003, sendo sujeitos da pesquisa, familiares de idosos de uma instituição asilar em um município da região noroeste do Rio Grande do Sul. Através da análise de conteúdo constatou-se que a maior dificuldade encontrada pela família, visando dispensar cuidados ao idoso é a "falta de tempo para cuidar" do seu familiar idoso, pois a maioria deles exige cuidados em tempo integral.

  7. Mudanças Estratégicas das Empresas Calçadistas do Vale do Rio dos Sinos [Strategic Change among Footwear companies in the Vale do Rio dos Sinos

    Directory of Open Access Journals (Sweden)

    Serje Schmidt

    2011-09-01

    Full Text Available A cadeia produtiva coureiro-calçadista tem passado por mudanças significativas na sua forma de operação em face às profundas mudanças ocorridas no ambiente competitivo internacional, o que exige das organizações uma nova visão sobre o seu posicionamento estratégico. Este artigo tem o objetivo de identificar o posicionamento estratégico das empresas calçadistas do Vale do Sinos, com base nas tipologias de Porter (1980, Mintzberg (2006 e Barney e Clark (2007. Esta pesquisa enquadra-se como descritiva e qualitativa. Entrevistas em profundidade foram conduzidas com especialistas no setor coureiro-calçadista, que apontaram uma mudança no posicionamento estratégico dessas empresas. De um perfil industrial com foco em baixo custo, as empresas aprumaram-se para um perfil mais voltado ao mercado, oferecendo elementos de diferenciação. Sugere-se, ao final, uma reflexão sobre o que foi aprendido com este episódio, bem como colocar em prática ações preventivas para sustentar esta nova posição competitiva. --- Strategic Change among Footwear companies in the Vale do Rio dos Sinos --- Abstract --- The operational side of the chain of production in the leather goods and footwear industry has undergone significant changes in response to the profound changes that have taken place in the international competitive environment and this requires a new strategic vision. The objective of this article is to identify the strategic positioning of the footwear manufacturers located in the Vale do Sinos according to the classifications described by Porter (1980, Mintzberg (2006 and Barney and Clark (2007. This is a descriptive and qualitative study. In-depth interviews were carried out with specialists in the leather goods and footwear industry. Starting from an industrial profile focused on low costs, these companies have realigned themselves to a more market-oriented profile, offering elements of differentiation. The paper ends by suggesting that

  8. The moduli spaces of $3d$ ${\\cal N} \\ge 2$ Chern-Simons gauge theories and their Hilbert series

    CERN Document Server

    Cremonesi, Stefano; Zaffaroni, Alberto

    2016-01-01

    We present a formula for the Hilbert series that counts gauge invariant chiral operators in a large class of 3d ${\\cal N} \\ge 2$ Yang-Mills-Chern-Simons theories. The formula counts 't Hooft monopole operators dressed by gauge invariants of a residual gauge theory of massless fields in the monopole background. We provide a general formula for the case of abelian theories, where nonperturbative corrections are absent, and consider a few examples of nonabelian theories where nonperturbative corrections are well understood. We also analyze in detail nonabelian ABJ(M) theories as well as worldvolume theories of M2-branes probing Calabi-Yau fourfold and hyperK\\"ahler twofold singularities with ${\\cal N} = 2$ and ${\\cal N} = 3$ supersymmetry.

  9. Les espèces envahissantes dans l’archipel néo-calédonien

    OpenAIRE

    Barré, Nicolas; Beauvais, Marie-Laure; Brescia, Fabrice; Coléno, Alain; Delos, Marc; de Garine-Wichatitsky, Michel; Frétey, Thierry; Gozlan, Estelle; Jaffré, Tanguy; Jourdan, Hervé; Lefeuvre, Jean-Claude; Loope, Lloyd; Loope, Lloyd L.; Lorvelec, Olivier; Meyer, Jean-Yves

    2014-01-01

    La biodiversité calédonienne, reconnue comme l’une des plus exceptionnelles avec son fort taux d’endémisme, est largement menacée par l’introduction de nouvelles espèces. Il est donc important de protéger l’écosystème calédonien, à la fois riche et vulnérable, des espèces envahissantes, l’une des principales causes de perte de la biodiversité à l’échelle mondiale. Face à cette menace, le Gouvernement et les trois provinces de Nouvelle-Calédonie souhaitent mettre en place une structure collec...

  10. Adinkra `Color' Confinement In Exemplary Off-Shell Constructions Of 4D, ${\\cal N}$ = 2 Supersymmetry Representations

    CERN Document Server

    Gates,, S James

    2014-01-01

    Evidence is presented in some examples that an adinkra quantum number, $\\chi_{\\rm o}$ (arXiv:\\ 0902.3830 [hep-th]), seems to play a role with regard to off-shell 4D, $\\cal N$ = 2 SUSY similar to the role of color in QCD. The vanishing of this adinkra quantum number appears to be a condition required for when two off-shell 4D, $\\cal N$ = 1 supermultiplets form an off-shell 4D, $\\cal N$ = 2 supermultiplet. We also explicitly comment on a deformation of the Lie bracket and anti-commutator operators that has been extensively and implicitly used in our work on "Garden Algebras" adinkras, and codes.

  11. Repercussões do uso do calçado de salto alto na postura corporal de adolescentes

    Directory of Open Access Journals (Sweden)

    Anniele Martins Silva

    2013-06-01

    Full Text Available OBJETIVO: Revisar estudos referentes às repercussões do uso de calçado com salto alto na postura corporal de adolescentes. FONTES DE DADOS: Pesquisa realizada nas bases de dados Scopus, SciELO e PubMed entre 1980 e 2011, incluindo artigos escritos em inglês e português. Foram utilizados os descritores: "postura", "centro de gravidade" e "calçado de salto alto". Foram encontrados 55 artigos, independentemente do desenho do estudo, incluindo-se 20 relacionados à postura da coluna vertebral e membros inferiores, à localização do centro de gravidade e às repercussões do uso do calçado de salto alto no sistema musculoesquelético em adolescentes. SÍNTESE DOS DADOS: O uso frequente do calçado de salto alto acarreta modificação do centro de gravidade e do equilíbrio corporal, podendo ocasionar mudança no alinhamento dos segmentos corporais. Isso traz repercussões negativas ao desenvolvimento motor das adolescentes, pois nessa fase há a necessidade de manutenção da postura fisiológica para que ocorra o crescimento e o desenvolvimento do sistema musculoesquelético. CONCLUSÕES: O uso do calçado de salto alto por adolescentes pode favorecer o aparecimento de distúrbios posturais, dentre os quais se destacam anteriorização da cabeça, hiperlordose lombar, anteversão pélvica e joelho em valgo. Identificou-se que a altura e a largura do salto são as características do calçado que mais influenciam no surgimento de alterações posturais e desequilíbrio corporal.

  12. 13000 cal years upwelling variation in southwestern Atlantic (Brazil): continental paleoclima implications

    Science.gov (United States)

    Albuquerque, A.

    2009-12-01

    Ana Luiza ALBUQUERQUE(1); Bruno TURCq(2); Abdel SIFEDDINE(1,2). (1) Departamento de Geoquímica, Universidade Federal Fluminense, Niterói, Brazil. (2) LOCEAN, IRD/UPMC/CNRS/MNHN, Bondy, France. The Cabo Frio region as indicated by its name is a place of low SST due to a local upwelling triggered by the Northeast trade winds, the northward flow of cool South Atlantic Central Water and vortex of the Brazilian current in the upper warm Tropical Water. Paleoceanographic conditions during the last 13000 years have been reconstructed based on two cores collected on the outer shelf. The studied proxies included mineral and heavy metal quantification, bulk organic matter characteristics and planktonic foraminifera. A first phase of sedimentation between 13000 and 7000 cal BP is characterized by high mineral content probably due to the lower sea level. SST reconstruction indicate cool and highly variable temperatures that were probably not related to upwelling events made difficult by the low sea level but to lower regional SSTs. This is in good agreement with observations of continental climate dryer in southwest Brazil with intense events of precipitation. A second phase between 7000 and 3000 cal BP shows higher SST indicating few occurrences of upwelling. Its may be due to the decrease of South Atlantic Convergence Zone (ZCAS) intensity linked to the lower summer insolation and the reduced monsoonal flux at that time. On the adjacent continent the decrease monsoon is evidenced by low lake levels and poorly developed forests. The third and last phase, post 3000 cal BP, is characterized by the onset of upwelling events that may be related to an intensification of the South American Monsoon and of the ZCAS activity leading to an increase of Northeast winds during summer which is typically the upwelling season. On the continent this period was marked by forest development. The transition at 3000 yrs BP is very late compared to other Holocene Record. Paleoclimate model

  13. Morfometría de la escarpa de falla histórica identificada al norte del cerro La Cal, zona de falla La Cal, Mendoza

    Directory of Open Access Journals (Sweden)

    F. Mingorance

    2006-12-01

    Full Text Available Investigación morfométrica y paleosísmica histórica fue llevada a cabo en el Norte de Mendoza con el objeto de caracterizar y cuantificar a las evidencias geomorfológicas de ruptura superficial histórica identificadas en el sector septentrional de la zona de falla La Cal. Integración e interpretación de datos e información científica multidisciplinaria, sugieren fuertemente que la ruptura superficial histórica identificada estuvo asociada al terremoto destructivo de Mendoza ocurrido en 1861. La deformación superficial histórica ocurrió casi en su totalidad a lo largo de una escarpa prehistórica previa, mediante una combinación de fallamiento de corrimiento y plegamiento cercano a la superficie. Dos elementos de pendiente históricos de bajo relieve fueron reconocidos en la escarpa compuesta Villavicencio Sur, los cuales se diferencian de la típica secuencia de formas desarrollada en escarpas de falla normal históricas. El "remanente de cara libre", el elemento de pendiente superior, y la "pendiente de colapso", el elemento inferior, son controlados por la fricción interna y por la gravedad y la fricción de deslizamiento del material aluvial, respectivamente. La metodología paleosísmica histórica discutida en este trabajo, parece ser particularmente útil en el período de tiempo que cubre la mayor parte del registro histórico de terremotos destructivos en Argentina, los pasados 350 años, lapso en el cual la mayoría de los métodos de datación absoluta no son muy efectivos.

  14. Morfometria de fibroblastos e fibrócitos durante o processo cicatricial na pele de coelhos da raça Nova Zelândia Branco tratados com calêndula Morphometry of fibroblasts and fibrocytes during wound healing in the skin of rabbits of the New Zeland White breed treated with marigold

    Directory of Open Access Journals (Sweden)

    Leonardo de Oliveira Pagnano

    2008-09-01

    Full Text Available O objetivo deste estudo foi avaliar a capacidade cicatrizante da calêndula (Calendula officinalis L. sobre feridas cutâneas experimentais, em 15 coelhos, distribuídos em três grupos denominados: excipiente, calêndula e controle. Cada animal foi submetido à uma incisão cirúrgica de 6cm de comprimento, lateral à coluna vertebral e suturada no padrão U. Os produtos avaliados foram colocados sobre as incisões durante sete dias na quantidade de 0,1ml (loção cremosa não-iônica - grupo excipiente; tintura de calêndula a 5% - grupo calêndula e nos animais do grupo controle não se utilizou nenhum produto. A biópsia de pele foi realizada no 1°, 3°, 5° e 7° dia após a incisão cirúrgica para avaliação morfométrica do processo cicatricial, analisando-se o número de fibroblastos e fibrócitos. A morfometria foi realizada por meio de microscópio óptico adaptado a um sistema computadorizado de análise de imagens. De acordo com os resultados, a calêndula propiciou obtenção dos maiores valores médios das células envolvidas no processo cicatricial, os fibroblastos, deduzindo que a mesma, inferiu uma resposta mais satisfatória na cicatrização em relação aos demais tratamentos.The aim of this study was to evaluate the scarring capability of marigold (Calendula officinalis L. on experimental skin wounds in 15 rabbits, distributed in three groups: excipient, marigold and control. Each animal was subjected to a surgical incision measuring 6cm in length, laterally to the spinal column and sutured in U-shape. Products evaluated were placed on the incisions for 7 days, at a rate of 0.1ml (nonionic creamy lotion - excipient group; 5% marigold extract and no treatment was provided to control animals. Skin biopsy was performed on 1, 3, 5, and 7 days after wounding, for morphometric and cicatricial process evaluations. The morphometry was performed with an optical microscope adapted to a computadorized picture analysis system. The

  15. The impact of BeamCal performance at different international linear collider beam parameters and crossing angles on $\\tilde{}$ searches

    Indian Academy of Sciences (India)

    P Bambade; V Drugakov; W Lohmann

    2007-12-01

    The ILC accelerator parameters and detector concepts are still under discussion in the world-wide community. As will be shown, the performance of the BeamCal, the calorimeter in the very forward area of the ILC detector, is very sensitive to the beam parameter and crossing angle choices. We propose here BeamCal designs for small (0 or 2 mrad) and large (20 mrad) crossing angles and report about the veto performance study done. As an illustration, the influence of several proposed beam parameter sets and crossing angles on the signal-to-background ratio in the stau search is estimated for a particular realization of the supersymmetric model.

  16. Producción de semilla de cacahuate forrajero con siete dosis de cal y tres fechas de cosecha

    OpenAIRE

    Javier Francisco Enríquez Quiroz; Adrián Raymundo Quero Carrillo

    2001-01-01

    Arachis pintoi (cacahuatillo) es una valiosa leguminosa que puede ser utilizada con diferentes propósitos. En México la producción de semilla es nula, así como su manejo. Los objetivos fueron determinar la respuesta a la aplicación de cal y el tiempo a la cosecha de semilla. Se evaluaron dos ecotipos del CIAT (17434 y 18744), siete niveles de cal y tres fechas de cosecha, en un diseño de parcelas divididas; Se registró información de producción de semilla, peso unidad de semilla sin lavar, la...

  17. diCal-IBD: demography-aware inference of identity-by-descent tracts in unrelated individuals

    DEFF Research Database (Denmark)

    Tataru, Paula; Nirody, Jasmine A; Song, Yun S

    2014-01-01

    Summary: We present a tool, diCal-IBD, for detecting identity-bydescent (IBD) tracts between pairs of genomic sequences. Our method builds on a recent demographic inference method based on the coalescent with recombination, and is able to incorporate demographic information as a prior. Simulation...... study shows that diCal-IBD has significantly higher recall and precision than that of existing SNP-based IBD detection methods, while retaining reasonable accuracy for IBD tracts as small as 0.1 cM. Availability: http://sourceforge.net/projects/dical-ibd Contact: yss@eecs.berkeley.edu Supplementary...

  18. On the contribution of scalars to ${\\cal N}=4$ SYM amplitudes

    CERN Document Server

    Bonini, Alfredo; Piscaglia, Simone; Rossi, Marco

    2016-01-01

    We analyse the contribution of $2n$ scalars to the Operator Product Expansion series for MHV gluon scattering amplitudes/polygonal Wilson loops in planar ${\\cal N}=4$ SYM. Hence, we sum up on $2n$ for large coupling $\\lambda$: the logarithm of the amplitude is proportional to $\\sqrt{\\lambda}$, thus competing, unexpectedly, with the famous classical contribution. We give analytical expressions for the first terms at large $\\lambda$ and in case of two and four scalars. For finalising this analysis, we find profitable an explicit computation of the $2n$-scalar term at any coupling by means of Young tableaux, paralleling, under certain aspects, the Nekrasov-Okounkov expressions for $\\mathcal N =2$ SYM prepotential.

  19. A High Resolution Spectroscopic Observation of CAL 83 with XMM-Newton/RGS

    CERN Document Server

    Paerels, F B S; Hartmann, H W; Heise, J; Brinkman, A C; De Vries, C P; Den Herder, J M; Paerels, Frits; Rasmussen, Andrew P.

    2001-01-01

    We present the first high resolution photospheric X-ray spectrum of a Supersoft X-ray Source, the famous CAL~83 in the Large Magellanic Cloud. The spectrum was obtained with the Reflection Grating Spectrometer on XMM-Newton during the Calibration/Performance Verification phase of the observatory. The spectrum covers the range 20-40 A at an approximately constant resolution of 0.05 A, and shows very significant, intricate detail, that is very sensitive to the physical properties of the object. We present the results of an initial investigation of the spectrum, from which we draw the conclusion that the spectral structure is probably dominated by numerous absorption features due to transitions in the L-shells of the mid-$Z$ elements and the M-shell of Fe, in addition to a few strong K-shell features due to CNO.

  20. Area products for ${\\cal H}^{\\pm}$ in AdS space

    CERN Document Server

    Pradhan, Parthapratim

    2016-01-01

    We derive the thermodynamic products particularly area (or entropy) products of ${\\cal H}^{\\pm}$ for certain class of black holes in AdS space. We show by explicit calculations that more complicated function of event horizon area and Cauchy horizon area is indeed mass-independent. This mass-independent quantities indicate that they could turn out to be an "universal" quantity provided that they depends only on the quantized angular momentum, quantized charges, and cosmological constant. Furthermore, these area (or entropy) product relations for several class of black holes in AdS space gives us strong indication to understanding the nature of non-extremal black hole entropy (both inner and outer) at the microscopic level. Moreover, we compute the famous \\emph{Penrose inequality} for these class of black holes in AdS space. Local thermodynamic stability has been discussed for these black holes and under certain condition these black holes displayed second order phase transition.

  1. A hybrid readout system for the ATLAS TileCal phase 2 upgrade Demonstrator

    CERN Document Server

    Bohm, C; The ATLAS collaboration

    2012-01-01

    The ATLAS Tile Calorimeter phase 2 upgrade demonstrator project aims at installing hybrid on-detector electronic systems replacing 1-4 adjacent TileCal electronics drawers in ATLAS starting at the end of the long shut down of LHC 2013 to 2014. The new drawers combine a fully functional phase 2 system with circuitry making them compatible with the present system. We are reporting on a second generation prototype of the on-detector readout system containing front-end, data acquisition, control and link boards. In the design we have emphasized redundancy and reliability. Data from and commands to the calorimeter are transferred via high speed (5 or 10 Gb/s) optical links.

  2. Development of a Readout Link Board for theTileCal Phase 2 Demonstrator

    CERN Document Server

    Muschter, S; The ATLAS collaboration; Bohm, C; Eriksson, D; Oreglia, M; Tang, F

    2012-01-01

    The ATLAS Tile Calorimeter phase 2 upgrade demonstrator aims at installing a hybrid on-detector electronic system replacing 1-4 adjacent TileCal drawers in ATLAS starting end of phase 0, combining a fully functional phase 2 system with circuitry making it compatible with the present system. We are reporting a second generation prototype link and controller board connecting the drawer to off-detector electronics in USA-15. The new boards main logic component is a XILINX Kintex7 FPGA connected to an 12x5 Gb/s AVAGO opto transmitter and a 4x10 Gb/s QSFP+ connector. One of the latter will be chosen for the final design

  3. Development of a readout link board for the TileCal phase 2 demonstrator

    CERN Document Server

    Muschter, S; The ATLAS collaboration; Bohm, C; Eriksson, D; Oreglia, M; Tang, F

    2012-01-01

    The ATLAS Tile Calorimeter phase 2 upgrade demonstrator aims at installing a hybrid on-detector electronic system replacing 1-4 adjacent TileCal drawers in ATLAS starting end of phase 0, combining a fully functional phase 2 system with circuitry making it compatible with the present system. We are reporting a second generation prototype link and controller board connecting the drawer to off-detector electronics in USA-15. The new boards main logic component is a XILINX Kintex7 FPGA connected to an 12x5 Gb/s AVAGO opto transmitter and a 4x10 Gb/s QSFP+ connector. One of the latter will be chosen for the final design.

  4. Resolved gravity duals of ${\\cal N}=4$ quiver field theories in 2+1 dimensions

    CERN Document Server

    Cottrell, William

    2016-01-01

    We generalize the construction by Aharony, Hashimoto, Hirano, and Ouyang of ${\\cal N}=4$ quiver gauge theory with gauge group $U(N+M) \\times U(N)$, $k$ fundamentals charged under $U(N)$ and bi-fundamentals, to the case with gauge group $\\prod_{i=1}^{\\hat k} U(N_i)$ with $k_i$ fundamentals charged under $U(N_i)$. This construction is facilitated by considering the resolved $ALE_{\\hat k} \\times TN_{k}$ background in M-theory including non-trivial fluxes through the resolved 4-cycles in the geometry. We also describe the M-theory lift of the IIA Page charge quantization condition. Finally, we clarify the role of string corrections in various regimes of parameter space.

  5. A prototype for the upgraded readout electronics of TileCal

    CERN Document Server

    Eriksson, D; Bohm, C; Kavianipour, H; Anderson, K; Oreglia, M; Tang, F

    2012-01-01

    Upgrade plans for ATLAS hadronic tile calorimeter (TileCal) include full readout of all data to the counting room. R&amp;D activities at different laboratories target different parts of the upgraded system. We are developing a possible implementation of the future readout electronics to be included in a full functional demonstrator. This must be capable of adapting to each of the three different front-end alternatives. Prototypes of the two PCBs that will be in charge of digitization, control and communication have been developed. The design is redundant and uses FPGAs with fault tolerant firmware for control and protocol conversion. Communication and clock synchronization between on and off detector electronics is implemented via high speed optical links using the GBT protocol.

  6. Large-N correlation functions in ${\\cal N} = 2$ superconformal QCD

    CERN Document Server

    Baggio, Marco; Papadodimas, Kyriakos; Vos, Gideon

    2016-01-01

    We study extremal correlation functions of chiral primary operators in the large-N SU(N) ${\\cal N} = 2$ superconformal QCD theory and present new results based on supersymmetric localization. We discuss extensively the basis-independent data that can be extracted from these correlators using the leading order large-N matrix model free energy given by the four-sphere partition function. Special emphasis is given to single-trace 2- and 3-point functions as well as a new class of observables that are scalars on the conformal manifold. These new observables are particular quadratic combinations of the structure constants of the chiral ring. At weak 't Hooft coupling we present perturbative results that, in principle, can be extended to arbitrarily high order. We obtain closed-form expressions up to the first subleading order. At strong coupling we provide analogous results based on an approximate Wiener-Hopf method.

  7. CalClim: An accessible data archive to monitor California climate

    Science.gov (United States)

    Edwards, L. M.; Cayan, D. R.; Redmond, K. T.; McCurdy, G. D.; Riddle, L.; Tyree, M. M.

    2004-12-01

    Climate data for the state of California has historically been provided by several independent sources, requiring time-consuming searches to find the appropriate information. The CalClim California Climate Data Archive (CCDA) provides centralized climate data access to assist those interested in monitoring California climate variability and change. The CalClim website (http://www.calclim.dri.edu) is a gateway to a number of climate observation networks that operate in California, including NWS Cooperative Network, SNOTEL, Remote Automated Weather Station (RAWS), and other statewide and regional networks. This archive enables scientists, state agencies and others with California interests to retrieve climate data at their convenience, for periods from days to years, and from one or multiple networks. Software on the website can also produce summaries of data, and graphs of daily or monthly data with options such as running means. Currently a limited selection of data is available, but additional datasets will be added over the next several months to one year. A coastal-focused climate data archive is anticipated to be added in early 2005. Both graphical and text interfaces are used to select networks and/or individual stations. Other products available at the website include the monthly California Climate Watch online newsletter and recent climate maps for periods ranging from the last week to 3 years, updated daily. A climate metadata inventory for the state is being assembled in conjunction with this project, and will be made available online at its completion. An additional aspect in development involves support of an enhanced California climate monitoring network.

  8. Modeling Aerosol Effects on Clouds and Precipitation: Insights from CalWater 2015

    Science.gov (United States)

    Leung, L. R.; Lim, K. S. S.; Fan, J.; Prather, K. A.; DeMott, P. J.; Spackman, J. R.; Ralph, F. M.

    2015-12-01

    The CalWater 2015 field campaign took place in northern California from mid January through early March of 2015. The field campaign, including collaborations between CalWater 2 and ACAPEX, aims to improve understanding and modeling of large-scale dynamics and cloud and precipitation processes associated with atmospheric rivers (ARs) and aerosol-cloud interactions that influence precipitation variability and extremes in the western U.S. An observational strategy was employed using land and offshore assets to monitor (1) the evolution and structure of ARs from near their regions of development, (2) long range transport of aerosols in eastern North Pacific and potential interactions with ARs, and (3) how aerosols from long-range transport and local sources influence cloud and precipitation in the U.S. During the field campaign, an AR developed in the Northeast Pacific Ocean in early February and made landfall in northern California. In-situ aerosol and cloud measurements from the G-1 aircraft; remote sensing data of clouds and aerosols; and meteorological measurements from aircraft, ship, and ground-based instruments collected from February 5 - 8, 2015 are analyzed to characterize the large-scale environment and cloud and precipitation forming processes. Modeling experiments are designed using a regional model for simulations with a cloud resolving limited area domain and quasi-global coarser resolution domain to evaluate the impacts of aerosols on clouds and precipitation, and to explore the relative contributions of long-range transported and regional aerosols that interacted with the clouds before, during, and after AR landfall. Preliminary results will be discussed in the context of the field data as well as a multi-year simulation of the climatological contributions of long-range transported dust during AR landfall in California.

  9. RVC-CAL library for endmember and abundance estimation in hyperspectral image analysis

    Science.gov (United States)

    Lazcano López, R.; Madroñal Quintín, D.; Juárez Martínez, E.; Sanz Álvaro, C.

    2015-10-01

    Hyperspectral imaging (HI) collects information from across the electromagnetic spectrum, covering a wide range of wavelengths. Although this technology was initially developed for remote sensing and earth observation, its multiple advantages - such as high spectral resolution - led to its application in other fields, as cancer detection. However, this new field has shown specific requirements; for instance, it needs to accomplish strong time specifications, since all the potential applications - like surgical guidance or in vivo tumor detection - imply real-time requisites. Achieving this time requirements is a great challenge, as hyperspectral images generate extremely high volumes of data to process. Thus, some new research lines are studying new processing techniques, and the most relevant ones are related to system parallelization. In that line, this paper describes the construction of a new hyperspectral processing library for RVC-CAL language, which is specifically designed for multimedia applications and allows multithreading compilation and system parallelization. This paper presents the development of the required library functions to implement two of the four stages of the hyperspectral imaging processing chain--endmember and abundances estimation. The results obtained show that the library achieves speedups of 30%, approximately, comparing to an existing software of hyperspectral images analysis; concretely, the endmember estimation step reaches an average speedup of 27.6%, which saves almost 8 seconds in the execution time. It also shows the existence of some bottlenecks, as the communication interfaces among the different actors due to the volume of data to transfer. Finally, it is shown that the library considerably simplifies the implementation process. Thus, experimental results show the potential of a RVC-CAL library for analyzing hyperspectral images in real-time, as it provides enough resources to study the system performance.

  10. High-intensity geomagnetic field 'spike' observed at ca. 3000 cal BP in Texas, USA

    Science.gov (United States)

    Bourne, Mark D.; Feinberg, Joshua M.; Stafford, Thomas W.; Waters, Michael R.; Lundelius, Ernest; Forman, Steven L.

    2016-05-01

    By observing the fluctuations in direction and intensity of the Earth's magnetic field through time, we increase our understanding of the fluid motions of the Earth's outer core that sustain the geomagnetic field, the geodynamo. Recent archaeomagnetic studies in the Near East have found extremely rapid increases - 'spikes' - in geomagnetic field intensity at ca. 3000 yr cal BP. These observations have proved problematic for our current understanding of core-flow. However, until now, these geomagnetic spikes had not been observed outside of the Near East, where they have been preserved in metallurgical slag and fired, mud brick walls. We present a new, fully oriented, geomagnetic secular variation and relative palaeointensity (RPI) record for the last 17,000 yr from Hall's Cave, Texas, whose complete, >3.8 m thick sedimentary sequence spans from the present to 16 , 850 ± 110 RC yr BP (Modern to 20,600 cal BP). Within the stable, cool climate of the cave, pedogenic and bioturbation processes are negligible to non-existent, thereby limiting post-depositional physical and geochemical alteration of the magnetic record. The sub-aerial and subterranean setting of the sedimentary sequence in Hall's Cave enabled us to collect oriented palaeomagnetic cubes from a previously excavated stratigraphic section. The palaeomagnetic samples yielded high-quality vectors. An age model for the sequence, determined using 15 AMS 14C-dates on individual bones from microvertebrates, was combined with the palaeomagnetic data to construct a secular variation record. The record is in broad agreement with predictions by Holocene field models for the site's location. However, starting ca. 3000 yr ago, the RPI data indicate an almost four-fold increase in geomagnetic field intensity lasting several hundred years. This record presents well-dated evidence, obtained using conventional techniques, for the existence of a geomagnetic intensity spike in North America that is contemporaneous with the

  11. The Kunming CalFit study: modeling dietary behavioral patterns using smartphone data.

    Science.gov (United States)

    Seto, Edmund; Hua, Jenna; Wu, Lemuel; Bestick, Aaron; Shia, Victor; Eom, Sue; Han, Jay; Wang, May; Li, Yan

    2014-01-01

    Human behavioral interventions aimed at improving health can benefit from objective wearable sensor data and mathematical models. Smartphone-based sensing is particularly practical for monitoring behavioral patterns because smartphones are fairly common, are carried by individuals throughout their daily lives, offer a variety of sensing modalities, and can facilitate various forms of user feedback for intervention studies. We describe our findings from a smartphone-based study, in which an Android-based application we developed called CalFit was used to collect information related to young adults' dietary behaviors. In addition to monitoring dietary patterns, we were interested in understanding contextual factors related to when and where an individual eats, as well as how their dietary intake relates to physical activity (which creates energy demand) and psychosocial stress. 12 participants were asked to use CalFit to record videos of their meals over two 1-week periods, which were translated into nutrient intake by trained dietitians. During this same period, triaxial accelerometry was used to assess each subject's energy expenditure, and GPS was used to record time-location patterns. Ecological momentary assessment was also used to prompt subjects to respond to questions on their phone about their psychological state. The GPS data were processed through a web service we developed called Foodscoremap that is based on the Google Places API to characterize food environments that subjects were exposed to, which may explain and influence dietary patterns. Furthermore, we describe a modeling framework that incorporates all of these information to dynamically infer behavioral patterns that may be used for future intervention studies. PMID:25571578

  12. Ubiquitination and degradation of CFTR by the E3 ubiquitin ligase MARCH2 through its association with adaptor proteins CAL and STX6.

    Science.gov (United States)

    Cheng, Jie; Guggino, William

    2013-01-01

    Golgi-localized cystic fibrosis transmembrane conductance regulator (CFTR)-associated ligand (CAL) and syntaxin 6 (STX6) regulate the abundance of mature, post-ER CFTR by forming a CAL/STX6/CFTR complex (CAL complex) that promotes CFTR degradation in lysosomes. However, the molecular mechanism underlying this degradation is unknown. Here we investigated the interaction of a Golgi-localized, membrane-associated RING-CH E3 ubiquitin ligase, MARCH2, with the CAL complex and the consequent binding, ubiquitination, and degradation of mature CFTR. We found that MARCH2 not only co-immunoprecipitated and co-localized with CAL and STX6, but its binding to CAL was also enhanced by STX6, suggesting a synergistic interaction. In vivo ubiquitination assays demonstrated the ubiquitination of CFTR by MARCH2, and overexpression of MARCH2, like that of CAL and STX6, led to a dose-dependent degradation of mature CFTR that was blocked by bafilomycin A1 treatment. A catalytically dead MARCH2 RING mutant was unable to promote CFTR degradation. In addition, MARCH2 had no effect on a CFTR mutant lacking the PDZ motif, suggesting that binding to the PDZ domain of CAL is required for MARCH2-mediated degradation of CFTR. Indeed, silencing of endogenous CAL ablated the effect of MARCH2 on CFTR. Consistent with its Golgi localization, MARCH2 had no effect on ER-localized ΔF508-CFTR. Finally, siRNA-mediated silencing of endogenous MARCH2 in the CF epithelial cell line CFBE-CFTR increased the abundance of mature CFTR. Taken together, these data suggest that the recruitment of the E3 ubiquitin ligase MARCH2 to the CAL complex and subsequent ubiquitination of CFTR are responsible for the CAL-mediated lysosomal degradation of mature CFTR.

  13. The EuroSprite2005 Observational Campaign: an example of training and outreach opportunities for CAL young scientists

    Directory of Open Access Journals (Sweden)

    O. Chanrion

    2007-07-01

    Full Text Available The four year "Coupling of Atmospheric Layers (CAL" EU FP5 Research Training Network project studied unanswered questions related to transient luminous events (sprites, jets and elves in the upper atmosphere. Consisting of ten scientific work-packages CAL also included intensive training and outreach programmes for the young scientists hired. Educational activities were based on the following elements: national PhD programmes, activities at CAL and other meetings, a dedicated summer school, and two European sprite observational campaigns. The young scientists were strongly involved in the latter and, as an example, the "EuroSprite2005" observational campaign is presented in detail. Some of the young scientists participated in the instrument set-up, others in the campaign logistics, some coordinated the observations, and others gathered the results to build a catalogue. During the four-month duration of this campaign, all of them took turns in operating the system and making their own night observations. The ongoing campaign activities were constantly advertised and communicated via an Internet blog. In summary the campaign required all the CAL young scientists to embark on experimental work, to develop their organisational skills, and to enhance their ability to communicate their activities. The campaign was a unique opportunity to train and strengthen skills that will be an asset to their future careers and, overall, was most successful.

  14. The genesis, methodical foundations, and problems in the realisation of the Atlas de la Nouvelle-Calédonie

    Directory of Open Access Journals (Sweden)

    Gay Jean-Christophe

    2014-03-01

    Full Text Available The article presents the main organisational, epistemological, and methodical principles assumed by one of the two scientific editors of the Atlas de la Nouvelle-Calédonie, and the problems they faced. The presented solutions may be useful to the authors of similar projects in the future.

  15. 77 FR 77183 - Union Pacific Railroad Company-Abandonment of Freight Easement Exemption-in Alameda County, Cal...

    Science.gov (United States)

    2012-12-31

    ... Industrial Lead); Santa Clara Valley Transportation Authority--Abandonment of Residual Common Carrier... Railroad Company (UP) and Santa Clara Valley Transportation Authority (SCVTA) jointly filed with the... contiguous to the segment between mileposts 7.35 and 16.30 in Alameda and Santa Clara Counties, Cal.,...

  16. Uml2 is a novel CalB-type lipase of Ustilago maydis with phospholipase A activity.

    Science.gov (United States)

    Buerth, Christoph; Kovacic, Filip; Stock, Janpeter; Terfrüchte, Marius; Wilhelm, Susanne; Jaeger, Karl-Erich; Feldbrügge, Michael; Schipper, Kerstin; Ernst, Joachim F; Tielker, Denis

    2014-06-01

    CalB of Pseudozyma aphidis (formerly named Candida antarctica) is one of the most widely applied enzymes in industrial biocatalysis. Here, we describe a protein with 66 % sequence identity to CalB, designated Ustilago maydis lipase 2 (Uml2), which was identified as the product of gene um01422 of the corn smut fungus U. maydis. Sequence analysis of Uml2 revealed the presence of a typical lipase catalytic triad, Ser-His-Asp with Ser125 located in a Thr-Xaa-Ser-Xaa-Gly pentapeptide. Deletion of the uml2 gene in U. maydis diminished the ability of cells to hydrolyse fatty acids from tributyrin or Tween 20/80 substrates, thus demonstrating that Uml2 functions as a lipase that may contribute to nutrition of this fungal pathogen. Uml2 was heterologously produced in Pichia pastoris and recombinant N-glycosylated Uml2 protein was purified from the culture medium. Purified Uml2 released short- and long-chain fatty acids from p-nitrophenyl esters and Tween 20/80 substrates. Furthermore, phosphatidylcholine substrates containing long-chain saturated or unsaturated fatty acids were effectively hydrolysed. Both esterase and phospholipase A activity of Uml2 depended on the Ser125 catalytic residue. These results indicate that Uml2, in contrast to CalB, exhibits not only esterase and lipase activity but also phospholipase A activity. Thus, by genome mining, we identified a novel CalB-like lipase with different substrate specificities.

  17. Teachers' Perceptions on the Use of ICT in a CAL Environment to Enhance the Conception of Science Concepts

    Science.gov (United States)

    George, Frikkie; Ogunniyi, M.

    2016-01-01

    Instructional methodologies increasingly require teachers' efficacy and implementation of computer-assisted learning (CAL) practices in general and particularly in the science classroom. The South African National Education Department's e-Education[1] policy also encourages the use of computers and computer software in implementing outcome-based…

  18. Co-evolving CENP-A and CAL1 Domains Mediate Centromeric CENP-A Deposition across Drosophila Species.

    Science.gov (United States)

    Rosin, Leah; Mellone, Barbara G

    2016-04-18

    Centromeres mediate the conserved process of chromosome segregation, yet centromeric DNA and the centromeric histone, CENP-A, are rapidly evolving. The rapid evolution of Drosophila CENP-A loop 1 (L1) is thought to modulate the DNA-binding preferences of CENP-A to counteract centromere drive, the preferential transmission of chromosomes with expanded centromeric satellites. Consistent with this model, CENP-A from Drosophila bipectinata (bip) cannot localize to Drosophila melanogaster (mel) centromeres. We show that this result is due to the inability of the mel CENP-A chaperone, CAL1, to deposit bip CENP-A into chromatin. Co-expression of bip CENP-A and bip CAL1 in mel cells restores centromeric localization, and similar findings apply to other Drosophila species. We identify two co-evolving regions, CENP-A L1 and the CAL1 N terminus, as critical for lineage-specific CENP-A incorporation. Collectively, our data show that the rapid evolution of L1 modulates CAL1-mediated CENP-A assembly, suggesting an alternative mechanism for the suppression of centromere drive. PMID:27093083

  19. Can Verbalisers Learn as well as Visualisers in Simulation-Based CAL with Predominantly Visual Representations? Preliminary Evidence from a Pilot Study

    Science.gov (United States)

    Liu, Tzu-Chien; Kinshuk; Lin, Yi-Chun; Wang, Ssu-Chin

    2012-01-01

    Simulation-based computer-assisted learning (CAL) is emerging as new technologies are finding a place in mainstream education. Dynamically linked multiple representations (DLMRs) is at the core of simulation-based CAL. DLMRs includes multiple visual representations, and it enables students to manipulate one representation and to immediately…

  20. The Sharp Rise of Δ14C ca. 800 cal BC : Possible causes, related climatic teleconnections and the impact on human environments

    NARCIS (Netherlands)

    Geel, Bas van; Plicht, Johannes van der; Kilian, M.R.; Klaver, E.R.; Kouwenberg, J.H.M.; Renssen, H.; Reynaud-Farrera, I.; Waterbolk, H.T.

    1998-01-01

    In this study we report on accelerator mass spectrometry (AMS) wiggle-match dating of selected macrofossils from organic deposits ca. 800 cal BC (ca. 2650 BP). Based on paleological, archaeological and geological evidence, we found that the sharp rise of atmospheric 14C between 850 and 760 cal BC co

  1. Vesetation and climate changes during the last 8660 cal. a BP in central Mongolia, based on a high-resolution pollen record from Lake Ugii Nuur

    Institute of Scientific and Technical Information of China (English)

    WANG Wei; MA YuZhen; FENG ZhaoDong; MENG HongWei; SANG YanLi; ZHAI XinWei

    2009-01-01

    Based on modern pollen studies and reliable chronology of nine AMS 14C dates, a detailed history of vegetation and climate changes during the past 8660 cal. a BP was reconstructed by a high-resolution pollen record from Ugii Nuur in central Mongolia. Poaceae-steppe dominated the study area and the climate was mild and semi-humid before 7800 cal. a BP with a noticeable cool and humid interval at 8350-8250 cal. a BP. Xerophytic plant increased and the climate became warm and dry gradually since 7800 cal. a BP. From 6860 to 3170 cal. a BP, semi-desert steppe expanded, suggesting a prolonged warm and dry climate. Between 3170 and 2340 cal. a BP, regional forest steppe expanded whereas semi-desert steppe retreated, indicating the climate became cool and wet gradually and the humidity reached the maximum at the end of this stage. From 2340 to 1600 cal. a BP, a general cool and wet climate prevailed. And the climatic instability increased after 1600 cal. a BP. Review of regional pub-lished palaeoclimaUc records implies that the mid-Holocene dry climate might have prevailed in vast areas from central Mongolia to arid areas of northwest China. Pollen-based climate reconstruction for UG04 core was well correlated with the result of climate model on Central Asia by Bush. In addition, several abrupt climatic events (cool and wet) were found and some could be broadly compared with the cool events in Atlantic.

  2. A Lactose-Binding Lectin from the Marine Sponge Cinachyrella Apion (Cal Induces Cell Death in Human Cervical Adenocarcinoma Cells

    Directory of Open Access Journals (Sweden)

    Adriana Uchoa

    2012-03-01

    Full Text Available Cancer represents a set of more than 100 diseases, including malignant tumors from different locations. Strategies inducing differentiation have had limited success in the treatment of established cancers. Marine sponges are a biological reservoir of bioactive molecules, especially lectins. Several animal and plant lectins were purified with antitumor activity, mitogenic, anti-inflammatory and antiviral, but there are few reports in the literature describing the mechanism of action of lectins purified from marine sponges to induce apoptosis in human tumor cells. In this work, a lectin purified from the marine sponge Cinachyrella apion (CaL was evaluated with respect to its hemolytic, cytotoxic and antiproliferative properties, besides the ability to induce cell death in tumor cells. The antiproliferative activity of CaL was tested against HeLa, PC3 and 3T3 cell lines, with highest growth inhibition for HeLa, reducing cell growth at a dose dependent manner (0.5–10 µg/mL. Hemolytic activity and toxicity against peripheral blood cells were tested using the concentration of IC50 (10 µg/mL for both trials and twice the IC50 for analysis in flow cytometry, indicating that CaL is not toxic to these cells. To assess the mechanism of cell death caused by CaL in HeLa cells, we performed flow cytometry and western blotting. Results showed that lectin probably induces cell death by apoptosis activation by pro-apoptotic protein Bax, promoting mitochondrial membrane permeabilization, cell cycle arrest in S phase and acting as both dependent and/or independent of caspases pathway. These results indicate the potential of CaL in studies of medicine for treating cancer.

  3. Novel mutations in RASGRP2, which encodes CalDAG-GEFI, abrogate Rap1 activation, causing platelet dysfunction.

    Science.gov (United States)

    Lozano, María Luisa; Cook, Aaron; Bastida, José María; Paul, David S; Iruin, Gemma; Cid, Ana Rosa; Adan-Pedroso, Rosa; Ramón González-Porras, José; Hernández-Rivas, Jesús María; Fletcher, Sarah J; Johnson, Ben; Morgan, Neil; Ferrer-Marin, Francisca; Vicente, Vicente; Sondek, John; Watson, Steve P; Bergmeier, Wolfgang; Rivera, José

    2016-09-01

    In addition to mutations in ITG2B or ITGB3 genes that cause defective αIIbβ3 expression and/or function in Glanzmann's thrombasthenia patients, platelet dysfunction can be a result of genetic variability in proteins that mediate inside-out activation of αIIbβ3 The RASGRP2 gene is strongly expressed in platelets and neutrophils, where its encoded protein CalDAG-GEFI facilitates the activation of Rap1 and subsequent activation of integrins. We used next-generation sequencing (NGS) and whole-exome sequencing (WES) to identify 2 novel function-disrupting mutations in RASGRP2 that account for bleeding diathesis and platelet dysfunction in 2 unrelated families. By using a panel of 71 genes, we identified a homozygous change (c.1142C>T) in exon 10 of RASGRP2 in a 9-year-old child of Chinese origin (family 1). This variant led to a p.Ser381Phe substitution in the CDC25 catalytic domain of CalDAG-GEFI. In 2 Spanish siblings from family 2, WES identified a nonsense homozygous variation (c.337C>T) (p.Arg113X) in exon 5 of RASGRP2 CalDAG-GEFI expression was markedly reduced in platelets from all patients, and by using a novel in vitro assay, we found that the nucleotide exchange activity was dramatically reduced in CalDAG-GEFI p.Ser381Phe. Platelets from homozygous patients exhibited agonist-specific defects in αIIbβ3 integrin activation and aggregation. In contrast, α- and δ-granule secretion, platelet spreading, and clot retraction were not markedly affected. Integrin activation in the patients' neutrophils was also impaired. These patients are the first cases of a CalDAG-GEFI deficiency due to homozygous RASGRP2 mutations that are linked to defects in both leukocyte and platelet integrin activation. PMID:27235135

  4. Sediment record of environmental change at Lake Lop Nur (Xinjiang, NW China) from 13.0 to 5.6 cal ka BP

    Science.gov (United States)

    Wang, Jingzhong; Jia, Hongjuan

    2016-09-01

    Lake Lop Nur is located in the eastern part of the Tarim Basin in Xinjiang, northwestern China. A 220-cm-long sediment core was collected from the center of the ear-shaped depression forming the basin and dated with AMS14C. Grain size, total organic matter (TOC), total nitrogen (TN), and TOC/TN (C/N) analyses were used to reconstruct climatic conditions from 13.0 to 5.6 cal ka BP. The results showed five main climatic stages. Zone I (13.0-11.3 cal ka BP) was a wet-dry environment, whereas Zone II (11.3-8.9 cal ka BP) consisted of a primarily wet environment. Zone III (8.9-7.7 cal ka BP) was subdivided into Zone IIIa (8.9-8.2 cal ka BP) that indicated lake constriction and dry climate, and Zone IIIb (8.2-7.7 cal ka BP) in which the proxies indicated wet conditions. In Zone IV (7.7-6.6 cal ka BP), the climate presented a bit wet conditions. In Zone V (6.6-5.6 cal ka BP), abundant glauberite is present in the sediment and silt dominates the lithology; these results indicate the lake shrank and the overall climate was dry. Abrupt environmental events were also identified, including six dry events at 11.0, 10.5, 9.3, 8.6, 8.2, and 7.6 cal ka BP and one flood event from 7.8 to 7.7 cal ka BP in the Early-Middle Holocene.

  5. Acueducto pretensado sobre el Holme

    Directory of Open Access Journals (Sweden)

    Editorial, Equipo

    1958-04-01

    Full Text Available Breve descripción del paso de una canalización de 0,60 m de diámetro, destinada al abastecimiento de aguas, sobre el río Holme (Inglaterra. El puente formado tiene dos vigas de hormigón pretensado, cuyas armaduras se componen de barras McCall.

  6. Documents sobre el monestir de Sant Pau del Camp, de Barcelona (segles XIII-XIV)

    OpenAIRE

    Mutgé Vives, Josefina

    1994-01-01

    Com que entre les moltes línies d'investigació cultivades pel Dr. Trenchs també hi figurava la història monàstica -només ens cal recordar que la seva tesi de llicenciatura, presentada en el llunya any de 1966, consistí en l'estudi de la Cartoixa de Scala Dei-, ens plau d'oferir-li aquí alguns documents inèdits sobre el monestir benedictí de Sant Pau del Camp, de Barcelona, procedents dels registres de cancelleria reial de l'Arxiu de la Corona d'Aragó, que constitueixen la primícia d'un futur ...

  7. Cosmology based on $f(R)$ gravity with ${\\cal O}(1)$ eV sterile neutrino

    CERN Document Server

    Chudaykin, A S; Starobinsky, A A; Burenin, R A

    2015-01-01

    We address the cosmological role of ${\\cal O}(1)$ eV sterile neutrino in modified gravity models. We confront the present cosmological data with the predictions of FLRW cosmological model based on a variant of $f(R)$ modified gravity proposed by one of the authors previously. This viable cosmological model which deviation from general relativity with an induced effective cosmological constant decreases as $R^{-2n}$ for large, but not too large values of the Ricci scalar $R$ provides an alternative to the bare cosmological constant explanation of the present dark energy and accelerated expansion of the Universe ($n=2$ is adopted). We used various up-to-date cosmological data sets including Planck CMB anisotropy, CMB lensing potential, BAO, cluster mass function and Hubble constant measurements. Using the low-z measurements of linear perturbation amplitude from galaxy cluster mass function data we find that sum of neutrino masses constrained by CMB+BAO data is not sufficient to compensate for the extra linear p...

  8. Terracotas de Calés en el Museo Arqueológico Nacional de Madrid

    Directory of Open Access Journals (Sweden)

    J. M. BLÁZQUEZ

    2009-10-01

    Full Text Available El Museo Arqueológico Nacional de Madrid exhibe entre sus magníficas colecciones una compuesta de numerosas terracotas traídas de Calés en el siglo pasado por el Marqués de Salamanca que nos hemos propuesto estudiar y a la que hemos dedicado varios trabajos ya. Colecciones similares se conservan en los museos de Lecce, Capua, Louvre, Leide, British Museum, Palazzo dei Conservatori, Villa Giulia, Nacionale Romano, Ny Carbsberg Glyptothek, Museo Universitario de Zurich, Museum für antike Kleinkunst de Munich, y Vaticano, en su mayoría inéditas. Todas estas terracotas plantean sugestivos y fundamentales problemas a los estudiosos del arte antiguo, que han sido señalados por Bianchi-Bandinelli con motivo del estudio y publicación de una terracota del Museo de Berlín. Bianchi-Bandinelli ha indicado alguna de las principales características del arte itálico de este momento, cual es su gusto moderno, su impresionismo e ilusionismo. En Italia en el periodo helenístico o época a la que pertenecen todas estas terracotas, existía una gran Koiné artística que abrazaba por lo menos Lacio, Campania y Etruria. Otros investigadores han estudiado algunas de estas terracotas,como G. Kaschnitz-Weinberg, Pesce, Mingazzini, Vessberg, R. Mengarelli, etc.

  9. Upgrade Analog Readout and Digitizing System for ATLAS TileCal Demonstrator

    CERN Document Server

    Tang, F; The ATLAS collaboration; Akerstedt, H; Biot, A; Bohm, C; Carrio, F; Drake, G; Hildebrand, K; Muschter, S; Oreglia, M; Paramonov, A

    2013-01-01

    A potential upgrade for the front-end electronics and signal digitization and data acquisition system of the ATLAS hadron calorimeter for the high luminosity Large Hadron Collider (HL-LHC) is described. A Demonstrator is being built to readout a slice of the TileCal detector. The on-detector electronics includes up to 48 Analog Front-end Boards for PMT analog signal processing, 4 Main Boards for data digitization and slow controls, 4 Daughter Boards with high speed optical links to interface the on-detector and off-detector electronics. Two super readout driver boards are used for off-detector data acquisition and fulfilling digital trigger. The ATLAS Tile Calorimeter on-detector electronics is housed in the drawers at the back of each of the 256 detector wedges. Each drawer services up to 48 photomultiplier tubes. The new readout system is designed to replace the present system as it will reach component lifetime and radiation tolerance limits making it incompatible with continued use into the HL-LHC era. Wi...

  10. Upgrade Analog Readout and Digitizing System for ATLAS TileCal Demonstrator

    CERN Document Server

    Tang, F; Anderson, K; Bohm, C; Hildebrand, K; Muschter, S; Oreglia, M

    2015-01-01

    The TileCal Demonstrator is a prototype for a future upgrade to the ATLAS hadron calorimeter when the Large Hadron Collider increases luminosity in year 2023 (HL-LHC). It will be used for functionality and performance tests. The Demonstrator has 48 channels of upgraded readout and digitizing electronics and a new digital trigger capability, but is backwards-compatible with the present detector system insofar as it also provides analog trigger signals. The Demonstrator is comprised of 4 identical mechanical mini-drawers, each equipped with up to 12 photomultipliers (PMTs). The on-detector electronics includes 45 Front-End Boards, each serving an individual PMT; 4 Main Boards, each to control and digitize up to 12 PMT signals, and 4 corresponding high-speed Daughter Boards serving as data hubs between on-detector and off-detector electronics. The Demonstrator is fully compatible with the present system, accepting ATLAS triggers, timing and slow control commands for the data acquisition, detector control, and de...

  11. PaCAL: A Python Package for Arithmetic Computations with Random Variables

    Directory of Open Access Journals (Sweden)

    Marcin Korze?

    2014-05-01

    Full Text Available In this paper we present PaCAL, a Python package for arithmetical computations on random variables. The package is capable of performing the four arithmetic operations: addition, subtraction, multiplication and division, as well as computing many standard functions of random variables. Summary statistics, random number generation, plots, and histograms of the resulting distributions can easily be obtained and distribution parameter ?tting is also available. The operations are performed numerically and their results interpolated allowing for arbitrary arithmetic operations on random variables following practically any probability distribution encountered in practice. The package is easy to use, as operations on random variables are performed just as they are on standard Python variables. Independence of random variables is, by default, assumed on each step but some computations on dependent random variables are also possible. We demonstrate on several examples that the results are very accurate, often close to machine precision. Practical applications include statistics, physical measurements or estimation of error distributions in scienti?c computations.

  12. Konishi Form Factor at Three Loop in ${\\cal N}=4$ SYM

    CERN Document Server

    Ahmed, Taushif; Dhani, Prasanna K; Rana, Narayan; Ravindran, V; Seth, Satyajit

    2016-01-01

    We present the first results on the third order corrections to on-shell form factor (FF) of the Konishi operator in ${\\cal N}=4$ supersymmetric Yang-Mills theory using Feynman diagrammatic approach in modified dimensional reduction ($\\overline {DR}$) scheme. We show that it satisfies KG equation in $\\overline {DR}$ scheme while the result obtained in four dimensional helicity (FDH) scheme needs to be suitably modified not only to satisfy the KG equation but also to get the correct ultraviolet (UV) anomalous dimensions. We find that the cusp, soft and collinear anomalous dimensions obtained to third order are same as those of the FF of the half-BPS operator confirming the universality of the infrared (IR) structures of on-shell form factors. In addition, the highest transcendental terms of the FF of Konishi operator are identical to those of half-BPS operator indicating the probable existence of deeper structure of the on-shell FF. We also confirm the UV anomalous dimensions of Konishi operator up to third ord...

  13. Constraining ${\\cal N}=1$ supergravity inflationary framework with non-minimal K\\"ahler operators

    CERN Document Server

    Choudhury, Sayantan; Pukartas, Ernestas

    2014-01-01

    In this paper we will illustrate how to constrain unavoidable K\\"ahler corrections for ${\\cal N}=1$ supergravity (SUGRA) inflation from the recent Planck data. We will show that the non-renormalizable K\\"ahler operators will induce in general non-minimal kinetic term for the inflaton field, and two types of SUGRA corrections in the potential - the Hubble-induced mass ($c_{H}$), and the Hubble-induced A-term ($a_{H}$) correction. The entire SUGRA inflationary framework can now be constrained from (i) the speed of sound, $c_s$, and (ii) from the upper bound on the tensor to scalar ratio, $r_{\\star}$. We will illustrate this by considering a heavy scalar degree of freedom at a scale, $M_s$, and a light inflationary field which is responsible for a slow-roll inflation. We will compute the corrections to the kinetic term and the potential for the light field explicitly. As an example, we will consider a visible sector inflationary model of inflation where inflation occurs at the point of inflection, which can matc...

  14. A new class of $({\\cal H}^k,1)$-rectifiable subsets of metric spaces

    CERN Document Server

    Ghezzi, Roberta

    2011-01-01

    The main motivation of this paper arises from the study of Carnot--Carath\\'eodory spaces, where the class of 1-rectifiable sets does not contain smooth non-horizontal curves; therefore a new definition of rectifiable sets including non-horizontal curves is needed. This is why we introduce in any metric space a new class of curves, called continuously metric differentiable of degree $k$, which are H\\"older but not Lipschitz continuous when $k>1$. Replacing Lipschitz curves by this kind of curves we define $({\\cal H}^k,1)$-rectifiable sets and show a density result generalizing the corresponding one in Euclidean geometry. This theorem is a consequence of computations of Hausdorff measures along curves, for which we give an integral formula. In particular, we show that both spherical and usual Hausdorff measures along curves coincide with a class of dimensioned lengths and are related to an interpolation complexity, for which estimates have already been obtained in Carnot--Carath\\'eodory spaces.

  15. Reprojeto do contraforte: um caso de aplicação do ecodesign em manufatura calçadista Stiffener redesign: a case of eco-design application in footwear manufacture

    Directory of Open Access Journals (Sweden)

    Miriam Borchardt

    2010-09-01

    Full Text Available O objetivo deste artigo é relatar um caso de reprojeto de um produto existente, o contraforte injetado, focando na minimização do impacto ambiental e na redução de custo do produto final, o calçado esportivo. O estudo de caso ocorreu em empresa de componentes para calçados. Foram analisadas as práticas do ecodesign inseridas no projeto de produto da empresa e o modo como foram operacionalizadas. São discutidos, também, os motivos que levaram a empresa a adotar o ecodesign e as dificuldades e barreiras encontradas. O artigo faz uma revisão sobre ecodesign, apresenta a metodologia de pesquisa e os resultados da investigação. O contraforte reprojetado trouxe, para a empresa fabricante de calçados esportivos, parceira da empresa produtora do componente em estudo, diminuição significativa do uso de adesivos e solventes, além de uma redução de 9,7% no custo-alvo do processo de aplicação do contraforte no cabedal.The purpose of this paper is to analyze the application of eco-design in the redesign of a component from the footwear industry, the stiffener. The focus is on a reduction in the environmental impact and in the final cost of sports footwear. The case study took place in a company that produces footwear components. The eco-design practices considered during the product redesign in the company and their implementation were analyzed. We also investigate and discuss the reasons why the company was led to adopt eco-design and the difficulties and barriers encountered by designers in their application. The paper reviews eco-design, describes the research methodology and presents and discusses research findings. The redesigned stiffener brought the footwear assembly company a new manufacturing business partner, and led to a significant reduction in the requirement for adhesives and solvents, and a 9.7% reduction in the target-cost of the application process.

  16. Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae Propiedades Insecticidas del Polvo de Peumus boldus Molina Solo y en Mezcla con Cal contra Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae

    Directory of Open Access Journals (Sweden)

    Gabriel Bustos-Figueroa

    2009-09-01

    Full Text Available The insecticidal properties of boldus (Peumus boldus Molina powder used alone and mixed with lime against adults of maize weevil (Sitophilus zeamais Motschulsky were evaluated under laboratory conditions. Additionally, aeration effects (presence or absence and temperature (room temperature vs. 3 ºC on insecticidal properties were studied over time. A mortality rate of 100% was observed at 20 g kg-1 (w/w of P. boldus powder when used alone and mixed with lime in proportions of 50:50, 60:40, and 80:20. The 50% lethal concentration (LC50 for all treatments was Se evaluaron las propiedades insecticidas del polvo de boldo (Peumus boldus Molina, solo y en mezcla con cal, bajo condiciones de laboratorio. Adicionalmente, se evaluó el efecto de la aeración (presencia vs. ausencia y de la temperatura (temperatura ambiente vs. 3 ºC sobre la mortalidad y emergencia de adultos de la F1. La concentración de 20 g kg-1 (p/p del polvo de boldo ya sea solo o en combinación con cal en las proporciones de 50:50, 60:40 y 80:20 mostraron 100% de mortalidad. La concentración letal 50% (CL50, en todos los tratamientos fue menor a 5 g kg-1 (p/p mientras que la CL90 no superó 11 g kg-1 (p/p. La mezcla del polvo con los granos de maíz tanto solo como en mezcla con cal no afectó la germinación. La temperatura y la aeración no afectaron la mortalidad de los adultos parentales ni la emergencia de adultos de la F1. Cuando se mezcló el maíz con el polvo de boldo molido 24 h antes de la infestación con adultos, la mortalidad de los adultos parentales y la emergencia de adultos de la F1 fue de 100 y de 0%, respectivamente. Los resultados no fueron satisfactorios cuando el polvo de boldo almacenado durante 30, 60 y 90 d fue mezclado con el maíz infestado. La toxicidad del follaje de boldo es alta 24 h después de pulverizarse; si el tiempo es mayor, la toxicidad declina significativamente.

  17. Design de calçado e acessórios : Estágio na marca Guava e realização de uma minicolecção de calçado

    OpenAIRE

    Chalabardo, Mariana Vidinha Fernandes

    2014-01-01

    Relatório de Estágio apresentado à Escola Superior de Artes Aplicadas do Instituto Politécnico de Castelo Branco e Guava Essentials Lda. para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Design de Vestuário e Têxtil. O presente relatório é referente a um estágio curricular efectuado na marca portuguesa de Calçado Guava. Ao longo do relatório, vão ser enumerados vários aspectos relacionados com o Design, o Calçado e a marca Guava. É importante entend...

  18. 计算机辅助教与学(CAI/CAL)在电磁学教学改革中的应用%CAI and CAL in the Teaching Reform of Electromagnetism

    Institute of Scientific and Technical Information of China (English)

    骆斌

    2001-01-01

    阐述计算机辅助教与学(CAI/CAL)在教学改革中的重要性,论述了CAI/CAL的基本功能以及在电磁学教学改革中的主要应用,认为在21世纪,教学中引入CAI/CAL是实现教育现代化的重要手段.

  19. Evaluation of AutoCAL for electronic portal imaging device-based multi-leaf collimator quality assurance.

    Science.gov (United States)

    Shameem, Tarafder J

    2016-01-01

    Modern radiotherapy treatment techniques commonly include multi-leaf collimators (MLCs) to shape the treatment fields and to conform the radiation dose to the target volume. MLCs require accurate and frequent quality assurance (QA) to ensure spatial and temporal accuracy of the leaves in order to allow optimal dose delivery to the patient. In this study, the accuracy and efficacy of AutoCAL, a commercial software for MLC QA, were evaluated. The software was found to be reproducible to within 0.2 mm and to correspond with conventional QA methods (within 1.2 and 0.9 mm of film and water tank measurements, respectively.) Thus, AutoCAL was found to be an accurate and efficient tool for routine MLC QA and calibration. PMID:26508357

  20. Fotosíntesis, crecimiento y aceites esenciales en morfotipos florales de caléndula (Calendula officinalis L.).

    OpenAIRE

    Salomé Abarca, Luis Francisco

    2014-01-01

    La caléndula (Calendula officinalis) es una especie herbácea originaria de Egipto, que se cree fue introducida a Europa en el siglo XII. En México es cultivada como una planta medicinal y de ornato, en lugares con clima semiseco y templado. En la zona de los valles centrales de México, Palma observó amplia diversidad fenotípica en una variedad común de caléndula, y eligió seis variantes en la morfología floral de esa población heterogénea, a las cuales denominó de la S1 a la S6. El objetivo ...

  1. Historia de la producción de cal en el norte de la cuenca de México

    Directory of Open Access Journals (Sweden)

    Vladimira Palma Linares

    2009-01-01

    Full Text Available En Tula, Apaxco y Ajoloapan se localizan varios de los afloramientos de rocas sedimentarias más importantes de la cuenca de México, utilizados para la extracción de calizas para la producción de cal, recurso de suma importancia para la construcción y la nixtamalización. En este trabajo, a partir del análisis de documentos históricos, información arqueológica y etnográfica, se presenta la historia de la producción de cal, así como la forma en que los habitantes de las poblaciones de Atotonilco, Tequixquiac, Hueypochtla, Tlapanaloya, Xilotzingo y Ajoloapan, accedían a este recurso en la época prehispánica y durante la Colonia.

  2. CalQuo: automated, simultaneous single-cell and population-level quantification of global intracellular Ca2+ responses

    Science.gov (United States)

    Fritzsche, Marco; Fernandes, Ricardo A.; Colin-York, Huw; Santos, Ana M.; Lee, Steven F.; Lagerholm, B. Christoffer; Davis, Simon J.; Eggeling, Christian

    2015-11-01

    Detecting intracellular calcium signaling with fluorescent calcium indicator dyes is often coupled with microscopy techniques to follow the activation state of non-excitable cells, including lymphocytes. However, the analysis of global intracellular calcium responses both at the single-cell level and in large ensembles simultaneously has yet to be automated. Here, we present a new software package, CalQuo (Calcium Quantification), which allows the automated analysis and simultaneous monitoring of global fluorescent calcium reporter-based signaling responses in up to 1000 single cells per experiment, at temporal resolutions of sub-seconds to seconds. CalQuo quantifies the number and fraction of responding cells, the temporal dependence of calcium signaling and provides global and individual calcium-reporter fluorescence intensity profiles. We demonstrate the utility of the new method by comparing the calcium-based signaling responses of genetically manipulated human lymphocytic cell lines.

  3. Development of the FoCal-E PAD detector and its electronics for the ALICE experiment at the LHC

    Science.gov (United States)

    Inaba, Motoi; Chujo, Tatsuya; Hirano, Masahiro

    2016-07-01

    In order to study the initial state of high-energy heavy-ion collisions, a forward calorimeter as an upgrade to the ALICE experiment is in the planning stage. The first beam test of the forward electro-magnetic calorimeter (FoCal-E) prototype was carried out in 2014 at the CERN PS and SPS accelerators. With the aim of reading out a signal from the low-granularity silicon pad sensors of FoCal-E, electronic circuits such as a temperature monitor, a trigger-signal converting-circuit, a trigger-signal processor, an independent regulated power circuit and an isolated high-voltage generator were developed. The electric noise problem was solved by means of both the power circuit and the high-voltage generator, and the signal was successfully read out.

  4. Elevage de la Crevette Bleue en Nouvelle-Calédonie. Litopenaeus Stylirostris. Bases biologiques et zootechnie

    OpenAIRE

    Della Patrona, Luc; Brun, Pierre

    2009-01-01

    L’ouvrage « Elevage de la Crevette Bleue en Nouvelle-Calédonie – Bases biologiques et zootechnie » est sans aucun doute le document de référence dont la crevetticulture de Nouvelle-Calédonie avait besoin. L’élaboration de cette synthèse des connaissances a été initiée lors du déroulement du projet de recherche Ifremer DESANS (DEfi SANté Stylirostris) construit sur la période 2003-2006 et a été finalisée sous le projet DEDUCTION (DEveloppement DUrable de la Crevetticulture, Traitement de l’Inf...

  5. Rehabilitació i canvi d'ús de l'antic edifici de batans i cardes de Cal Pons

    OpenAIRE

    Berengueras Campi, Aïda; Obea Escudé, Cristina

    2010-01-01

    L’Edifici de batans i cardes de Cal Pons ens va semblar molt interessant per realitzar el nostre Projecte Final de Grau, no només per la proximitat amb el nostre lloc de residència i l’accessibilitat gràcies a la col·laboració de l’Ajuntament del municipi de Puig-reig, sinó també perquè aquest edifici, juntament amb la resta del conjunt de la fàbrica tèxtil de Cal Pons, forma part de l’historia socioeconòmica de Catalunya i del nostre municipi, on gairebé el 90% de les famílies te...

  6. Historia de la producción de cal en el norte de la cuenca de México

    OpenAIRE

    Vladimira Palma Linares

    2009-01-01

    En Tula, Apaxco y Ajoloapan se localizan varios de los afloramientos de rocas sedimentarias más importantes de la cuenca de México, utilizados para la extracción de calizas para la producción de cal, recurso de suma importancia para la construcción y la nixtamalización. En este trabajo, a partir del análisis de documentos históricos, información arqueológica y etnográfica, se presenta la historia de la producción de cal, así como la forma en que los habitantes de las poblaciones de Atotonilco...

  7. Establishment of Centromeric Chromatin by the CENP-A Assembly Factor CAL1 Requires FACT-Mediated Transcription.

    Science.gov (United States)

    Chen, Chin-Chi; Bowers, Sarion; Lipinszki, Zoltan; Palladino, Jason; Trusiak, Sarah; Bettini, Emily; Rosin, Leah; Przewloka, Marcin R; Glover, David M; O'Neill, Rachel J; Mellone, Barbara G

    2015-07-01

    Centromeres are essential chromosomal structures that mediate accurate chromosome segregation during cell division. Centromeres are specified epigenetically by the heritable incorporation of the centromeric histone H3 variant CENP-A. While many of the primary factors that mediate centromeric deposition of CENP-A are known, the chromatin and DNA requirements of this process have remained elusive. Here, we uncover a role for transcription in Drosophila CENP-A deposition. Using an inducible ectopic centromere system that uncouples CENP-A deposition from endogenous centromere function and cell-cycle progression, we demonstrate that CENP-A assembly by its loading factor, CAL1, requires RNAPII-mediated transcription of the underlying DNA. This transcription depends on the CAL1 binding partner FACT, but not on CENP-A incorporation. Our work establishes RNAPII passage as a key step in chaperone-mediated CENP-A chromatin establishment and propagation. PMID:26151904

  8. El estrés calórico en vacas lecheras

    OpenAIRE

    Callejo Ramos, Antonio

    2015-01-01

    En las vacas lecheras el exceso de calor provoca cuantiosas pérdidas económicas debido a sus consecuencias sobre la producción y la reproducción, derivadas de los efectos negativos que tiene en el metabolismo digestivo, el sistema inmune, el sistema endocrino y el propio comportamiento de estos animales. Por tanto, es imprescindible adoptar medidas de diversa naturaleza tanto para reducir la producción de calor de las vacas como para incrementar su tasa de ...

  9. Z boson pair production at the LHC to ${\\cal O}(\\alpha_s)$ in TeV scale gravity models

    OpenAIRE

    Agarwal, Neelima; Ravindran, V.; Tiwari, V K; Tripathi, Anurag

    2009-01-01

    The first results on next-to-leading order QCD corrections to the production of two Z bosons, in hadronic collisions in the large extra dimension ADD model are presented. Various kinematical distributions are obtained to order $\\alpha_s$ in QCD by taking into account all the parton level subprocesses. We estimate the impact of the QCD corrections on various observables and find that they are significant. We also show the reduction in factorisation scale uncertainity when ${\\cal O}(\\alpha_s)$ ...

  10. The Cost Escalation of Rail Projects: Using Previous Experience to Re-Evaluate the CalSpeed Estimates

    OpenAIRE

    Leavitt, Dan; Ennis, Sean; McGovern, Pat

    1993-01-01

    This report is a follow-up study to last year's CalSpeed publication, "High-Speed Trains for California," Working Paper No. 565. The purpose of this paper is to test rigorously and critically the cost estimate methodology presented in that previous working paper. This has been accomplished primarily by focusing on the issue of cost escalation of rail projects, with reference to both U.S. and foreign experience.

  11. Usability-Studie der Dekanatssoftware CalRobi für den Modellstudiengang Medizin der RWTH Aachen

    OpenAIRE

    Seitz, Stefan Martin

    2011-01-01

    The CalRobi is an application program curricular planning esp. for the generation of syllabi. It was developed according to special requirements induced by the reformed medical curriculum of the Aachen Medical School. The implementation of the reformed curriculum led to the problem that due to the new interdisciplinary structure of the curriculum the available programs for curricular management could not be used anymore by the administrative staff. This problem was addressed by the implementa...

  12. El catalanismo en la hora del imperialismo. Un estudio excepcional sobre la proyección hispánica del nacionalismo "lligaire"

    OpenAIRE

    González Calleja, Eduardo

    2010-01-01

    RESUMEN: Una breve referencia al debate suscitado desde hace veinticinco años sobre las pretendidas limitaciones de la historiografía catalana en su estudio del hecho nacional autóctono y sus relaciones con el Estado español sirve de introducción a la crítica de la última obra de Enric Ucelay-Da Cal, que trata de ser analizada a la luz de los conceptos, tomados de la nueva historia cultural, que pretenden vertebrar su trabajo: la metáfora, el juego y el mito, que han ido articulando y definie...

  13. Breve informe sobre la coca

    Directory of Open Access Journals (Sweden)

    Lauro Hinostroza García

    1985-12-01

    Full Text Available El presente informe se integra en la investigación dirigida por el doctor Juan Ossio, por encargo de la Organización de los Estados Americanos (O.E.A. sobre “EFECTOS SOCIALES, CULTURALES, MÉDICOS Y ECONÓMICOS DEL USO TRADICIONAL DE LA COCA EN POBLACIONES DEL ANTIPLANO Y SIERRA DEL PERÚ, EN ESPECIAL DE LAS POBLACIONES INDÍGENAS”. Expone tópicos sobre la hoja de coca en la cultura andina: criterios clasificatorios, mitos, canciones y una muestra de qatipay o seguimiento. Este último es una práctica ritual importante para el campesinado andino, orienta el presente, pasado y futuro de toda su actividad. Cada hoja, por su forma, posición y tamaño, develará los roles sociales que ha de asumir, es decir los misterios del tiempo.

  14. Prevalencia de peso insuficiente, sobrepeso y obesidad, ingesta de energía y perfil calórico de la dieta de estudiantes universitarios de la Comunidad Autónoma de la Región de Murcia (España

    Directory of Open Access Journals (Sweden)

    Ana Belén Cutillas

    2013-06-01

    empeoramiento del perfil calórico de la dieta, lo que presumiblemente tendrá consecuencias indeseables sobre la salud de este joven grupo de población.

  15. Sobre la verdad en periodismo

    Directory of Open Access Journals (Sweden)

    Julio Estremadoyro Alegre

    2011-05-01

    Full Text Available Cuando un periodista informa sobre un desastre natural, con granpérdida de vidas, las autoridades y las fuentes de primera manodan cifras que son difundidas como verdades del suceso. Sinembargo, y la experiencia lo confirma, al día siguiente la cifraspueden haber cambiado y, por lo tanto, la verdad informativa esotra. Y así, sucesivamente, cada día habrá novedades y nuevas cifras verdaderas.

  16. Dose measurements using thermoluminescent dosimeters and DoseCal software at two paediatric hospitals in Rio de Janeiro

    Energy Technology Data Exchange (ETDEWEB)

    Mohamadain, K.E.M.; Azevedo, A.C.P.; Rosa, L.A.R. da E-mail: lrosa@ird.gov.br; Guebel, M.R.N.; Boechat, M.C.B

    2003-07-01

    A dosimetric survey in paediatric radiology is currently being carried out at the paediatric units of two large hospitals in Rio de Janeiro city: IPPMG (Instituto de Pediatria e Puericultura Martagao Gesteira, University Hospital of Federal University of Rio de Janeiro) and IFF (Instituto Fernandes Figueira, FIOCRUZ). Chest X-ray examination doses for AP, PA and LAT projections of paediatric patients have been obtained with thermoluminescent dosimeters (TLDs) and with use of a software package DoseCal. In IPPMG and IFF 100 patients have been evaluated with the use of the TLDs and another group of 100 patients with the DoseCal software. The aim of this work was to estimate the entrance skin dose (ESD) for frontal, back and lateral chest X-rays exposure of paediatric patients. For ESD evaluation, three different TL dosimeters have been used, namely LIF:Mg, Ti (TLD100), CaSO{sub 4}:Dy and LiF:Mg, Cu, P (TLD100H). The age intervals considered were 0-1, 1-5, 5-10 and 10-15 years. The results obtained with all dosimeters are similar, and it is in good agreement with the DoseCal software, especially for AP and PA projections. However, some larger discrepancies are presented for the LAT projection.

  17. Non-Hermitian $\\cal PT$-symmetric quantum mechanics of relativistic particles with the restriction of mass

    CERN Document Server

    Rodionov, V N

    2013-01-01

    The modified Dirac equations for the massive particles with the replacement of the physical mass $m$ with the help of the relation $m\\rightarrow m_1+ \\gamma_5 m_2$ are investigated. It is shown that for a fermion theory with a $\\gamma_5$-mass term, the limiting of the mass specter by the value $ m_{max}= {m_1}^2/2m_2$ takes place. In this case the different regions of the unbroken $\\cal PT$ symmetry may be expressed by means of the restriction of the physical mass $m\\leq m_{max}$. It should be noted that in the approach which was developed by C.Bender et al. for the $\\cal PT$-symmetric version of the massive Thirring model with $\\gamma_5$-mass term, the region of the unbroken $\\cal PT$-symmetry was found in the form $m_1\\geq m_2$ \\cite{ft12}. However on the basis of the mass limitation $m\\leq m_{max}$ we obtain that the domain $m_1\\geq m_2$ consists of two different parametric sectors: i) $0\\leq m_2 \\leq m_1/\\sqrt{2}$ -this values of mass parameters $m_1,m_2$ correspond to the traditional particles for which ...

  18. Dietary shift after 3600 cal yr BP and its influencing factors in northwestern China: Evidence from stable isotopes

    Science.gov (United States)

    Ma, Minmin; Dong, Guanghui; Jia, Xin; Wang, Hui; Cui, Yifu; Chen, Fahu

    2016-08-01

    Human diets rely on natural resource availability and can reflect social and cultural values. When environments, societies, and cultures change, diets may also shift. This study traced the extent of dietary change and the factors influencing such change. Through stable carbon and nitrogen isotopic analysis of late Neolithic and early Bronze Age human and animal bone collagen, we found that significant shifts in human diets were closely associated with intercontinental cultural exchanges in Eurasia and climate change in northwestern China. The isotopic evidence indicated that human diets mainly consisted of C4 foodstuffs (presumably millet and/or animals fed with C4 foods) around 4000 calibrated years before the present (cal yr BP), corresponding to the flourishing of millet agriculture in the context of the optimal climate conditions of the mid-Holocene. Subsequently, more C3 foods (probably wheat, barley, and animals fed with C3 foods) were added to human diets post-3600 cal yr BP when the climate became cooler and drier. Such dietary variation is also consistent with the increasing intensity of long-distance exchange after 4000 cal yr BP. While many factors can lead to human dietary shifts (e.g. climate change, population growth, cultural factors, and human migration), climate may have been a key factor in Gansu and Qinghai.

  19. CalMagNet – an array of search coil magnetometers monitoring ultra low frequency activity in California

    Directory of Open Access Journals (Sweden)

    C. Dunson

    2008-04-01

    Full Text Available The California Magnetometer Network (CalMagNet consists of sixty-eight triaxial search-coil magnetometer systems measuring Ultra Low Frequency (ULF, 0.001–16 Hz, magnetic field fluctuations in California. CalMagNet provides data for comprehensive multi-point measurements of specific events in the Pc 1–Pc 5 range at mid-latitudes as well as a systematic, long-term study of ULF signals in active fault regions in California. Typical events include geomagnetic micropulsations and spectral resonant structures associated with the ionospheric Alfvén resonator. This paper provides a technical overview of the CalMagNet sensors and data processing systems. The network is composed of ten reference stations and fifty-eight local monitoring stations. The primary instruments at each site are three orthogonal induction coil magnetometers. A geophone monitors local site vibration. The systems are designed for future sensor expansion and include resources for monitoring four additional channels. Data is currently sampled at 32 samples per second with a 24-bit converter and time tagged with a GPS-based timing system. Several examples of representative magnetic fluctuations and signals as measured by the array are given.

  20. A new monoclonal antibody (CAL2) detects CALRETICULIN mutations in formalin-fixed and paraffin-embedded bone marrow biopsies.

    Science.gov (United States)

    Stein, H; Bob, R; Dürkop, H; Erck, C; Kämpfe, D; Kvasnicka, H-M; Martens, H; Roth, A; Streubel, A

    2016-01-01

    Recent advances in the diagnostic of myeloproliferative neoplasms (MPNs) discovered CALRETICULIN (CALR) mutations as a major driver in these disorders. In contrast to JAK2 mutations being mainly associated with polycythaemia vera, CALR mutations are only associated with primary myelofibrosis (PMF) and essential thrombocythaemia (ET). CALR mutations are present in the majority of PMF and ET patients lacking JAK2 and MPL mutations. As these CALR mutations are absent from reactive bone marrow (BM) lesions their presence indicates ET or PMF. So far these mutations are detectable only by molecular assays. Their molecular detection is cumbersome because of the great CALR mutation heterogeneity. Therefore, the availability of a simple assay would be of great help. All CALR mutations reported lead to a frameshift generating a new 36 amino-acid C-terminus. We generated a monoclonal antibody (CAL2) to this C-neoterminus by immunizing mice with a representative peptide and compared its performance with Sanger sequencing data in 173 MPNs and other BM diseases. There was a 100% correlation between the molecular and the CAL2 immunohistochemical (IHC) assays. Thus, the detection of CALR mutations by the CAL2 IHC is a specific, sensitive, rapid, simple and low-cost method.

  1. The Cal-Bridge Program: Increasing the Gender and Ethnic Diversity of Astrophysics Students in Southern California

    Science.gov (United States)

    Smecker-Hane, Tammy A.; Rudolph, Alexander L.

    2016-06-01

    The mission of the Cal-Bridge program is to increase the number of underrepresented minority and women students completing a bachelor’s degree and entering a PhD program in astronomy, physics, or closely-related fields. The program has created a network of faculty at diverse higher education institutions, including 5 University of California (UC) campuses, 9 California State Universities (CSUs), and 10 community colleges in southern California, dedicated to this goal. Students selected for the program are know as “Cal-Bridge Scholars” and they are given a wide variety of support: (1) scholarships in their junior/senior years at CSU and their first year of graduate school at a UC, (2) intensive mentoring by a pair of CSU and UC faculty members, (3) tutoring, when needed, (4) professional development workshops, (5) exposure to research opportunities at various universities, and (6) membership in a growing cohort of like-minded students. We report on the structure of our program, lessons learned with our current 12 Cal-Bridge scholars, and the results of our first two years of operation. Funding for this program is provided by NSF-SSTEM Grant #1356133.

  2. Estimulação calórica gelada com ar nas vestibulopatias periféricas crônicas com nistagmo espontâneo Ice air caloric test in chronic peripheral vestibular dysfunction with spontaneous nystagmus

    Directory of Open Access Journals (Sweden)

    Flavia Silveira dos Santos Cabral

    2008-01-01

    Full Text Available OBJETIVO: analisar o efeito da estimulação gelada com ar a 10ºC sobre o nistagmo pós-calórico em pacientes com vestibulopatias periféricas crônicas que apresentam nistagmo espontâneo com olhos fechados. MÉTODOS: 61 pacientes foram submetidos às estimulações com ar a 42, 18 e 10ºC. RESULTADOS: em 42 casos (69,8% foram encontrados valores anormais de preponderância direcional e/ou de predomínio labiríntico a 42 e 18ºC. A prova a 10ºC apresentou valores de assimetria dentro dos padrões de normalidade em 52,5% dos casos e valores anormais de assimetria em 16,4% (p=0,012, confirmou hiporreflexia unilateral em 11,5% e identificou anormalidades não evidenciadas a 42 e 18ºC em 8,2%. CONCLUSÃO: a estimulação gelada com ar a 10ºC possibilitou retirar a influência do nistagmo espontâneo de olhos fechados sobre o nistagmo pós-calórico em pacientes com vestibulopatias periféricas crônicas.PURPOSE: to analyze the effect of air caloric stimulation at 10ºC on the post-caloric responses in patients with chronic peripheral dysfunction who presented spontaneous nystagmus with the eyes closed. METHODS: 61 patients with spontaneous nystagmus with closed eyes were submitted to air caloric stimulation under the following temperatures: 42, 18 and 10ºC. RESULTS: in 42 patients (69.8%, abnormal values of directional preponderance and / or unilateral hypoexcitability were observed following the 42ºC and 18ºC stimulations. For the 10ºC stimulations an asymmetry within normal limits was seen in 52.5% of the patients, while abnormal values were seen in 16.4% (p=0.012. Unilateral hypoexcitability was confirmed in 11.5% of the cases. In 8.2% of the patients there were abnormal findings not evidenced under 42ºC and 18ºC stimulations. CONCLUSION: in patients with chronic peripheral labyrinthine disorders who show spontaneous nystagmus with closed eyes, the 10ºC caloric test makes it possible to remove the influence of the spontaneous

  3. Morfometría de la escarpa de falla histórica identificada al norte del cerro La Cal, zona de falla La Cal, Mendoza Morphometry of the historic fault scarp identfied north of Cerro La Cal, La Cal Fault Zone, Mendoza

    Directory of Open Access Journals (Sweden)

    F. Mingorance

    2006-12-01

    Full Text Available Investigación morfométrica y paleosísmica histórica fue llevada a cabo en el Norte de Mendoza con el objeto de caracterizar y cuantificar a las evidencias geomorfológicas de ruptura superficial histórica identificadas en el sector septentrional de la zona de falla La Cal. Integración e interpretación de datos e información científica multidisciplinaria, sugieren fuertemente que la ruptura superficial histórica identificada estuvo asociada al terremoto destructivo de Mendoza ocurrido en 1861. La deformación superficial histórica ocurrió casi en su totalidad a lo largo de una escarpa prehistórica previa, mediante una combinación de fallamiento de corrimiento y plegamiento cercano a la superficie. Dos elementos de pendiente históricos de bajo relieve fueron reconocidos en la escarpa compuesta Villavicencio Sur, los cuales se diferencian de la típica secuencia de formas desarrollada en escarpas de falla normal históricas. El "remanente de cara libre", el elemento de pendiente superior, y la "pendiente de colapso", el elemento inferior, son controlados por la fricción interna y por la gravedad y la fricción de deslizamiento del material aluvial, respectivamente. La metodología paleosísmica histórica discutida en este trabajo, parece ser particularmente útil en el período de tiempo que cubre la mayor parte del registro histórico de terremotos destructivos en Argentina, los pasados 350 años, lapso en el cual la mayoría de los métodos de datación absoluta no son muy efectivos.Morphometric and historic paleoseismic research was conducted in northern Mendoza in order to characterize and quantify the geomorphic evidences of historic surface rupture identified on the northern part of the La Cal fault zone. Integration and interpretation of multidisciplinary data and information strongly suggest that the identified historic surface rupture was associated with the devastating Mendoza Earthquake occurred in 1861. The historic

  4. Understanding sources of organic aerosol during CalNex-2010 using the CMAQ-VBS

    Directory of Open Access Journals (Sweden)

    M. C. Woody

    2015-10-01

    Full Text Available Community Multiscale Air Quality (CMAQ model simulations utilizing the volatility basis set (VBS treatment for organic aerosols (CMAQ-VBS were evaluated against measurements collected at routine monitoring networks (Chemical Speciation Network (CSN and Interagency Monitoring of Protected Visual Environments (IMPROVE and those collected during the 2010 California at the Nexus of Air Quality and Climate Change (CalNex field campaign to examine important sources of organic aerosol (OA in southern California. CMAQ-VBS (OA lumped by volatility, semivolatile POA underpredicted total organic carbon (OC at CSN (−25.5 % Normalized Median Bias (NMdnB and IMPROVE (−63.9 % NMdnB locations and total OC was underpredicted to a greater degree compared to the CMAQ-AE6 (9.9 and −55.7 % NMdnB, respectively; semi-explicit OA treatment, SOA lumped by parent hydrocarbon, nonvolatile POA. However, comparisons to aerosol mass spectrometer (AMS measurements collected at Pasadena, CA indicated that CMAQ-VBS better represented the diurnal profile and the primary/secondary split of OA. CMAQ-VBS secondary organic aerosol (SOA underpredicted the average measured AMS oxygenated organic aerosol (OOA, a surrogate of SOA concentration by a factor of 5.2 (4.7 μg m−3 measured vs. 0.9 μg m−3 modeled, a considerable improvement to CMAQ-AE6 SOA predictions, which were approximately 24× lower than the average AMS OOA concentration. We use two new methods, based on species ratios and on a simplified SOA parameterization from the observations, to apportion the SOA underprediction for CMAQ-VBS to too slow photochemical oxidation (estimated as 1.5× lower than observed at Pasadena using − log (NOx: NOy, low intrinsic SOA formation efficiency (low by 1.6 to 2× for Pasadena, and too low emissions or too high dispersion for the Pasadena site (estimated to be 1.6 to 2.3× too low/high. The first and third factors will be similar for CMAQ-AE6, while the intrinsic SOA formation

  5. Measurement of Greenhouse gases (GHGs) and source apportionment in Bakersfield, CA during CalNex 2010

    Science.gov (United States)

    Guha, A.; Gentner, D. R.; Weber, R.; Gardner, A.; Provencal, R. A.; Goldstein, A. H.

    2011-12-01

    The California Global Warming Solutions Act 2006 (AB 32) creates a need to verify and validate the state GHG inventory, which is largely based on activity data and emission factor based estimates. The "bottom-up" emission factors for methane (CH4) and nitrous oxide (N2O) have large uncertainties and there is a lack of adequate "top-down" measurements to characterize emission rates from sources. Emissions from non-CO2 GHG sources display spatial heterogeneity and temporal variability, and are thus, often, poorly characterized. The Central Valley of California is an agriculture and industry intensive region with huge concentration of dairies, refineries and active oil fields which are known CH4 sources. As part of the CalNex campaign, we performed measurements of principal trace GHG gases (CO2, CH4, and N2O) and combustion tracer CO at the Bakersfield super-site during the summer of 2010. Measurements were made over a period of six weeks using fast response lasers based on cavity enhanced absorption spectroscopy (LGR Inc. CA). Coincident measurements of hundreds of volatile organic compounds (VOCs) served as anthropogenic and biogenic tracers of the GHG sources at local and regional levels. The local mean CH4 (1.93ppm) and N2O (325ppb) minimum are larger than that measured at Mauna Loa (NOAA). Daytime winds from the north-west draw emissions from the city center, Fruitvale oilfield and two refineries. Huge enhancements of CH4 relative to CO2 (> 4ppm of CH4) are seen on some days but almost on each night, when wind reversal and valley backflow brings winds from the east (oil fields and landfill). Winds from south-southwest (dairies) have ΔCH4 / ΔCO2 ratios similar to previous dairy chamber studies (Mitloehner et al., 2009). The ΔCH4 / ΔCO ratios at Bakersfield are much larger than that calculated downwind of Los Angeles at Mt. Wilson (Hsu et al., 2009) or in-flight measurements during CalNex (NOAA) suggesting additional non-combustion sources strongly influence

  6. Measurements of hydroxyl and hydroperoxy radicals during CalNex-LA: Model comparisons and radical budgets

    Science.gov (United States)

    Griffith, S. M.; Hansen, R. F.; Dusanter, S.; Michoud, V.; Gilman, J. B.; Kuster, W. C.; Veres, P. R.; Graus, M.; Gouw, J. A.; Roberts, J.; Young, C.; Washenfelder, R.; Brown, S. S.; Thalman, R.; Waxman, E.; Volkamer, R.; Tsai, C.; Stutz, J.; Flynn, J. H.; Grossberg, N.; Lefer, B.; Alvarez, S. L.; Rappenglueck, B.; Mielke, L. H.; Osthoff, H. D.; Stevens, P. S.

    2016-04-01

    Measurements of hydroxyl (OH) and hydroperoxy (HO2*) radical concentrations were made at the Pasadena ground site during the CalNex-LA 2010 campaign using the laser-induced fluorescence-fluorescence assay by gas expansion technique. The measured concentrations of OH and HO2* exhibited a distinct weekend effect, with higher radical concentrations observed on the weekends corresponding to lower levels of nitrogen oxides (NOx). The radical measurements were compared to results from a zero-dimensional model using the Regional Atmospheric Chemical Mechanism-2 constrained by NOx and other measured trace gases. The chemical model overpredicted measured OH concentrations during the weekends by a factor of approximately 1.4 ± 0.3 (1σ), but the agreement was better during the weekdays (ratio of 1.0 ± 0.2). Model predicted HO2* concentrations underpredicted by a factor of 1.3 ± 0.2 on the weekends, while measured weekday concentrations were underpredicted by a factor of 3.0 ± 0.5. However, increasing the modeled OH reactivity to match the measured total OH reactivity improved the overall agreement for both OH and HO2* on all days. A radical budget analysis suggests that photolysis of carbonyls and formaldehyde together accounted for approximately 40% of radical initiation with photolysis of nitrous acid accounting for 30% at the measurement height and ozone photolysis contributing less than 20%. An analysis of the ozone production sensitivity reveals that during the week, ozone production was limited by volatile organic compounds throughout the day during the campaign but NOx limited during the afternoon on the weekends.

  7. Evaluating N2O5 heterogeneous hydrolysis parameterizations for CalNex 2010

    Science.gov (United States)

    Chang, Wayne L.; Brown, Steven S.; Stutz, Jochen; Middlebrook, Ann M.; Bahreini, Roya; Wagner, Nicholas L.; Dubé, William P.; Pollack, Ilana B.; Ryerson, Thomas B.; Riemer, Nicole

    2016-05-01

    Nighttime chemistry in the troposphere is closely tied to the dinitrogen pentoxide (N2O5) budget, but high uncertainties remain regarding the model representation of the heterogeneous hydrolysis of N2O5 on aerosol particles. In this study we used the community model WRF-Chem to simulate a 3-day period during the California Nexus (CalNex) Campaign in 2010. We extended WRF-Chem to include the heterogeneous hydrolysis of N2O5 and contrasted the impact of different published parameterizations of N2O5 heterogeneous hydrolysis on the spatial distribution of uptake coefficients and the resulting N2O5 concentrations. For all the cases, modeled N2O5 uptake coefficients showed strong spatial variability, with higher values in the nocturnal boundary layer compared to the residual layer, especially in environments with high relative humidities, such as over the ocean and along the coast. The best agreement of modeled and observed uptake coefficients was obtained using the parameterization by Davis et al. (2008) combined with the treatment of organic coating by Riemer et al. (2009). For this case the temporal evolution of lower boundary layer N2O5 mixing ratios was reproduced well, and the predictions of surface mixing ratios of ozone and NOx were improved. However, the model still overpredicted the uptake coefficients in the residual layer and consequently underpredicted N2O5 concentrations in the residual layer. This study also highlights that environments with low relative humidities pose a challenge for aerosol thermodynamic models in calculating aerosol water uptake, and this impacts N2O5 heterogeneous hydrolysis parameterizations.

  8. Oceanographic profile data using bottle collected during CalCOFI cruises, North Pacific Ocean, 2014-03 to 2015-02 (Accession 0145016) (NCEI Accession 0145016)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Bottle data collected during CalCOFI cruises 1404, 1407, 1411, and 1501, March 2014 - February 2015. The California Cooperative Oceanic Fisheries Investigations...

  9. Oceanographic profile data using bottle, collected during CalCOFI cruises, North Pacific Ocean, 2012-03 to 2013-01 (NODC Accession 0117293)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Bottle data collected during CalCOFI cruises 1203, 1207, 1210, and 1301, March 2012 - January 2013. The California Cooperative Oceanic Fisheries Investigations...

  10. Oceanographic profile data using bottle collected during CalCOFI cruises, North Pacific Ocean, 2013-04 to 2014-02 (NCEI Accession 0126651)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Bottle data collected during CalCOFI cruises 1304, 1307, 1311, and 1402, April 2013 - February 2014. The California Cooperative Oceanic Fisheries Investigations...

  11. Bering Sea Inner Front zooplankton data sets collected with CalVet net on four cruises from 6/3/1997 - 9/1/1998 (NODC Accession 0000103)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Zooplankton and other data were collected using CalVet net in Bering sea from ALPHA HELIX. Data were collected from 01 June 1997 to 01 September 1998 by University...

  12. An integrated environment for HW/SW co-design based on a CAL specification and HW/SW code generators

    OpenAIRE

    Roquier, Ghislain; Lucarz, Christophe; Mattavelli, Marco; Wipliez, Matthieu; Raulet, Mickaël; Janneck, Jörn W.; Miller, Ian D.; Parlour, David B.

    2009-01-01

    International audience This demonstration presents an integrated environment that translates a CAL-based dataflow specification [1] into a heterogeneous implementation, composed by HDL and C codes. The demonstration focuses on the capability of the co-design environment to automatically build an executable heterogeneous system implementation running on a platform composed of a processor and a FPGA from the annotation of the CAL specification. The possibility of direct synthesis from a high...

  13. Multilineage polyclonal engraftment of Cal-1 gene-modified cells and in vivo selection after SHIV infection in a nonhuman primate model of AIDS.

    Science.gov (United States)

    Peterson, Christopher W; Haworth, Kevin G; Burke, Bryan P; Polacino, Patricia; Norman, Krystin K; Adair, Jennifer E; Hu, Shiu-Lok; Bartlett, Jeffrey S; Symonds, Geoff P; Kiem, Hans-Peter

    2016-01-01

    We have focused on gene therapy approaches to induce functional cure/remission of HIV-1 infection. Here, we evaluated the safety and efficacy of the clinical grade anti-HIV lentiviral vector, Cal-1, in pigtailed macaques (Macaca nemestrina). Cal-1 animals exhibit robust levels of gene marking in myeloid and lymphoid lineages without measurable adverse events, suggesting that Cal-1 transduction and autologous transplantation of hematopoietic stem cells are safe, and lead to long-term, multilineage engraftment following myeloablative conditioning. Ex vivo, CD4+ cells from transplanted animals undergo positive selection in the presence of simian/human immunodeficiency virus (SHIV). In vivo, Cal-1 gene-marked cells are evident in the peripheral blood and in HIV-relevant tissue sites such as the gastrointestinal tract. Positive selection for gene-marked cells is observed in blood and tissues following SHIV challenge, leading to maintenance of peripheral blood CD4+ T-cell counts in a normal range. Analysis of Cal-1 lentivirus integration sites confirms polyclonal engraftment of gene-marked cells. Following infection, a polyclonal, SHIV-resistant clonal repertoire is established. These findings offer strong preclinical evidence for safety and efficacy of Cal-1, present a new method for tracking protected cells over the course of virus-mediated selective pressure in vivo, and reveal previously unobserved dynamics of virus-dependent T-cell selection. PMID:26958575

  14. Hominització versus humanització : Cal un nou paradigma?

    OpenAIRE

    Farguell i Magnet, Josep

    2006-01-01

    Treball de recerca amb uns objectius definits per a una possible anàlisi crítica dels estudis sobre hominització que, de manera emblemàtica, representa la figura d'Eudald Carbonell. Es considera més idoni per a jutjar el valor de la seva aportació pel fet de no centrar-se en el camp de la prehistòria, sinó el de la sociologia, la filosofia de la tecnologia i la filosofia de la història. Trabajo de investigación con unos objetivos definidos para un posible análisis crítico de los estudios s...

  15. Chemical evolution of organic aerosol in Los Angeles during the CalNex 2010 study

    Directory of Open Access Journals (Sweden)

    R. Holzinger

    2013-05-01

    Full Text Available During the CalNex study (15 May to 16 June 2010 a large suite of instruments was operated at the Los Angeles area ground supersite to characterize the sources and atmospheric processing of atmospheric pollution. The thermal-desorption proton-transfer-reaction mass-spectrometer (TD-PTR-MS was deployed to an urban area for the first time and detected 691 organic ions in aerosol samples, the mean total concentration of which was estimated as 3.3 μg m−3. Based on comparison to total organic aerosol (OA measurements, we estimate that approximately 50% of the OA mass at this site was directly measured by the TD-PTR-MS. Based on correlations with aerosol mass spectrometer (AMS OA components, the ions were grouped to represent hydrocarbon-like OA (HOA, local OA (LOA, semi-volatile oxygenated OA (SV-OOA, and low volatility oxygenated OA (LV-OOA. Mass spectra and thermograms of the ion groups are mostly consistent with the assumed sources and/or photochemical origin of the OA components. The mass spectra of ions representing the primary components HOA and LOA included the highest m/z, consistent with their higher resistance to thermal decomposition, and they were volatilized at lower temperatures. Photochemical ageing weakens C-C bond strengths (also resulting in chemical fragmentation, and produces species of lower volatility (through the addition of functional groups. Accordingly the mass spectra of ions representing the oxidized OA components (SV-OOA, and LV-OOA lack the highest masses and they are volatilized at higher temperatures. Chemical parameters like mean carbon number (nC, mean carbon oxidation state (OSC, and the atomic ratios O/C and H/C of the ion groups are consistent with the expected sources and photochemical processing of the aerosol components. Our data suggest that chemical fragmentation gains importance over functionalization as photochemical age of OA increases. Surprisingly, the photochemical age of OA decreases during the

  16. Nota sobre Keynes y Brentano

    OpenAIRE

    Crespo, Ricardo F.; IAE (Universidad Austral) y CONICET

    2013-01-01

    Este trabajo explora la posibilidad de una relación entre el pensamiento de John Maynard Keynes y el del filósofo alemán Franz Brentano (1839-1917) en los campos lógico y epistemológico. George E. Moore -profesor de Keynes- y Keynes mismo leyeron y alabaron el libro de Brentano El origen del conocimiento moral (1889). ¿Tomó Keynes algunas ideas lógicas o epistemológicas de Brentano? El trabajo sugiere que, a pesar de ciertas similitudes entre las ideas lógicas y sobre la verdad de Keynes y Br...

  17. Thomas Hobbes: sobre el miedo

    OpenAIRE

    Carlos Bührle

    2004-01-01

    Este trabajo pretende echar cierta luz sobre el papel del miedo en el pensamiento político de Hobbes. Sabido es que esta pasión subyace al contrato social, en el sentido de que impulsa al hombre a abandonar el estado de naturaleza a fin de encontrar seguridad y de deshacerse de la amenaza de la muerte violenta. Teniendo en cuenta que el miedo y la muerte son inseparables en la filosofía de Hobbes, surge una pregunta fundamental: ¿hasta qué punto podemos decir que el miedo desaparece completam...

  18. Modelos ambientales sobre la vejez

    OpenAIRE

    Izal, María; Fernández-Ballesteros, Rocío

    1990-01-01

    La perspectiva ambiental en el estudio de la vejez es probablemente un ámbito poco conocido. En este trabajo se expone una revisión crítica de los principales modelos de explicación de las relaciones ambiente-conducta en la vejez. Finalmente, se discute sobre la superación de algunas limitaciones presentes en estas formulaciones teóricas, presentándose posibles alternativas teóricas y metodológicas para el desarrollo de esta área.

  19. Historicismo: notas sobre um paradigma

    OpenAIRE

    José D’Assunção Barros

    2012-01-01

    Este artigo tem por objetivo desenvolver algumas considerações sobre o Historicismo e sua possibilidade de ser examinado como um dos paradigmas que concorrem para o estabelecimento de uma história científica no século XIX. O primeiro ponto tratado é relativo às origens do paradigma Historicista na transição do século XVIII para o século XIX. Na sequência, aproximamo-nos da apropriação conservadora do paradigma historicista no novo contexto no qual a burguesia européia está assentada no Poder,...

  20. Entorno colaborativo sobre laboratorios remotos

    OpenAIRE

    Grosclaude, Eduardo; Sznek, Jorge Eduardo; Ramos Garcia, Vicente; Bertogna, Mario Leandro; López Luro, Francisco; Zanellato, Claudio

    2006-01-01

    El proyecto de investigación Software para Procesos Colaborativos incluye una línea de acción sobre el desarrollo de experiencias en Laboratorios Remotos. Esta línea está dedicada a complementar las tareas de aprendizaje con un soporte tecnológico de sistemas, entendido como todas aquellas actividades de infraestructura que promuevan la disponibilidad de recursos y apoyen la escalabilidad de procesos en la tarea educativa apuntalada por tecnologías de información. En este trabajo se describe ...

  1. As articulações do comércio e distribuição na dinâmica da produção em aglomerado produtivo calçadista de Portugal

    Directory of Open Access Journals (Sweden)

    Judite de Azevedo do Carmo

    2014-04-01

    Full Text Available Este artigo objetiva apresentar os resultados da pesquisa sobre as articulações entre o comércio e a produção em aglomerado produtivo, tomando como espaço empírico São João da Madeira (PT. Para tanto, realizamos leituras de bibliografias teóricas e práticas, tanto brasileiras quanto portuguesas, bem como coleta de dados quantitativos e qualitativos em órgãos oficiais, assim como em indústrias e em estabelecimentos comerciais do município, por meio de entrevistas e aplicação de questionários. A análise dos dados obtidos proporcionou-nos identificar que os calçados de produção local são valorizados pelos comerciantes, sendo comercializados em todos os estabelecimentos, embora não se verifica intensa relação entre os produtores e os comerciantes locais.

  2. The 2010 California Research at the Nexus of Air Quality and Climate Change (CalNex) field study

    Science.gov (United States)

    Ryerson, T. B.; Andrews, A. E.; Angevine, W. M.; Bates, T. S.; Brock, C. A.; Cairns, B.; Cohen, R. C.; Cooper, O. R.; Gouw, J. A.; Fehsenfeld, F. C.; Ferrare, R. A.; Fischer, M. L.; Flagan, R. C.; Goldstein, A. H.; Hair, J. W.; Hardesty, R. M.; Hostetler, C. A.; Jimenez, J. L.; Langford, A. O.; McCauley, E.; McKeen, S. A.; Molina, L. T.; Nenes, A.; Oltmans, S. J.; Parrish, D. D.; Pederson, J. R.; Pierce, R. B.; Prather, K.; Quinn, P. K.; Seinfeld, J. H.; Senff, C. J.; Sorooshian, A.; Stutz, J.; Surratt, J. D.; Trainer, M.; Volkamer, R.; Williams, E. J.; Wofsy, S. C.

    2013-06-01

    The California Research at the Nexus of Air Quality and Climate Change (CalNex) field study was conducted throughout California in May, June, and July of 2010. The study was organized to address issues simultaneously relevant to atmospheric pollution and climate change, including (1) emission inventory assessment, (2) atmospheric transport and dispersion, (3) atmospheric chemical processing, and (4) cloud-aerosol interactions and aerosol radiative effects. Measurements from networks of ground sites, a research ship, tall towers, balloon-borne ozonesondes, multiple aircraft, and satellites provided in situ and remotely sensed data on trace pollutant and greenhouse gas concentrations, aerosol chemical composition and microphysical properties, cloud microphysics, and meteorological parameters. This overview report provides operational information for the variety of sites, platforms, and measurements, their joint deployment strategy, and summarizes findings that have resulted from the collaborative analyses of the CalNex field study. Climate-relevant findings from CalNex include that leakage from natural gas infrastructure may account for the excess of observed methane over emission estimates in Los Angeles. Air-quality relevant findings include the following: mobile fleet VOC significantly declines, and NOx emissions continue to have an impact on ozone in the Los Angeles basin; the relative contributions of diesel and gasoline emission to secondary organic aerosol are not fully understood; and nighttime NO3 chemistry contributes significantly to secondary organic aerosol mass in the San Joaquin Valley. Findings simultaneously relevant to climate and air quality include the following: marine vessel emissions changes due to fuel sulfur and speed controls result in a net warming effect but have substantial positive impacts on local air quality.

  3. CalTOX, a multimedia total exposure model for hazardous-waste sites; Part 1, Executive summary

    Energy Technology Data Exchange (ETDEWEB)

    McKone, T.E.

    1993-06-01

    CalTOX has been developed as a spreadsheet model to assist in health-risk assessments that address contaminated soils and the contamination of adjacent air, surface water, sediments, and ground water. The modeling effort includes a multimedia transport and transformation model, exposure scenario models, and efforts to quantify and reduce uncertainty in multimedia, multiple-pathway exposure models. This report provides an overview of the CalTOX model components, lists the objectives of the model, describes the philosophy under which the model was developed, identifies the chemical classes for which the model can be used, and describes critical sensitivities and uncertainties. The multimedia transport and transformation model is a dynamic model that can be used to assess time-varying concentrations of contaminants introduced initially to soil layers or for contaminants released continuously to air or water. This model assists the user in examining how chemical and landscape properties impact both the ultimate route and quantity of human contact. Multimedia, multiple pathway exposure models are used in the CalTOX model to estimate average daily potential doses within a human population in the vicinity of a hazardous substances release site. The exposure models encompass twenty-three exposure pathways. The exposure assessment process consists of relating contaminant concentrations in the multimedia model compartments to contaminant concentrations in the media with which a human population has contact (personal air, tap water, foods, household dusts soils, etc.). The average daily dose is the product of the exposure concentrations in these contact media and an intake or uptake factor that relates the concentrations to the distributions of potential dose within the population.

  4. Energy, Sustainability, Collaboration: Learning it, Teaching it, and Living it -- At Cal Poly, in Guatemala, and at Home

    Science.gov (United States)

    Schwartz, Pete

    2012-11-01

    Three questions have become important to me: *``What is the future of our energy dilemma, and how can I participate toward a solution?'' Since 2007, I have been teaching ``Energy, Society, and the Environment'' at Cal Poly as well as developing and analyzing renewable energy technologies. In the process I have learned as much as my students. This interest was initially sparked by making ``sustainable'' changes to my home and lifestyle, and has since fueled constant domestic experimentation. *The above question extends to ``Environmental Justice'', which is essentially a question of ``who benefits and who suffers as a result of our societal choices?'' For the past three years, I've developed and directed a collaborative (Guatemalan/Cal Poly) appropriate technology field school. Students from both countries learn together during the two-month summer program in a small mountain village in Guatemala (www.guateca.com). *``What happens to learning efficacy when students become friends?'' For the past three years, I've been actively engaged with a group of Cal Poly instructors in a quest to create community in the learning environment (www.sustainslo.org). Additionally, I've begun to teach all my classes ``inside out'', consistent with the advice of Physics Nobel Prize Laureate Carl Weiman (Science, 13 May 2011, VOL 332 862 -- 864). Students learn the material at home by reading or watching videos available on the web. This opens up class time for guided discussion, experimentation, and calculations. The Guateca field school provides an extreme example of this principle, as all the students do become friends. with very interesting results.

  5. Como evitar a formação de substâncias tóxicas durante a absorção de dióxido de carbono pela cal sodada com uso de anestésicos halogenados Como evitar la formación de substancias tóxicas durante la absorción de dióxido de carbono por la cal sodada con uso de anestésicos halogenados Preventing toxic substances production during carbon dioxide absorption by soda lime with halogenate anesthetics

    Directory of Open Access Journals (Sweden)

    Renato Ângelo Saraiva

    2004-06-01

    gua, de preferência destilada, na relação de 25 ml para cada 500 g de cal. Atualmente a indústria está bem informada sobre o problema da composição da cal, então, deve-se preferir a cal sodada que tenha somente o hidróxido de cálcio e seja totalmente desprovida de hidróxido de potássio e hidróxido de sódio.JUSTIFICATIVA Y OBJETIVOS: La cal sodada desde el inicio de su uso siempre presentó algunas complicaciones que resultaron en dificultad en su aplicabilidad. No entanto, debido a las grandes ventajas que ofrecía en relación a la reducción del flujo de gases frescos, despolución de la sala de cirugía y humidificación del sistema de inhalación y vía aérea, hicieron con que continuasen las pesquisas para que pudiese ser mejorada y corregida de forma que la continuidad de su utilización sea asegurada. Actualmente existe el problema de la deshidratación con elevación de la temperatura y de la degradación metabólica de los anestésicos halogenados que necesitan de cuidados especiales para evitar la formación de productos tóxicos. CONTENIDO: Existe una reacción en cadena a partir de la cal sodada deshidratada o resecada con bajos volúmenes porcentuales de agua. Hay aumento de la temperatura, mayor absorción de anestésico halogenado para el interior del granulo de cal y en seguida mayor degradación metabólica de las moléculas de estos agentes y consecuentemente la producción de substancias tóxicas como el Compuesto A por la reacción de los hidróxidos con el sevoflurano. Hay también formación de monóxido de carbono producido de la misma forma por la reacción entre los halogenados y las bases fuertes de la cal. El compuesto A es nefrotóxico y el monóxido de carbono lleva a la hipóxia y alteraciones graves de la coagulación de la sangre. Además de los cuidados para la hidratación de la cal sodada es posible usar ésta sin contener las bases fuertes como los hidróxidos de potasio y de sodio, conteniendo apenas hidróxido de calcio

  6. Ingrediente antioxidante de bajo contenido calórico, procedimiento de obtención y uso

    OpenAIRE

    Saura Calixto, Fulgencio D.

    2011-01-01

    La presente invención se refiere a un ingrediente antioxidante de bajo contenido calórico obtenible a partir de un procedimiento que comprende las siguientes etapas: (a) selección como materia prima de al menos una fruta y/o material vegetal con un alto contenido en antioxidantes, superior a 6 g/100 g materia seca; (b) obtención de zumo y pulpa mediante trituración, exprimido y/o prensado de la materia prima; (c) extracción de azúcares de la pulpa obtenida en la etapa anterior, dando lugar a ...

  7. Z boson pair production at the LHC to ${\\cal O}(\\alpha_s)$ in TeV scale gravity models

    CERN Document Server

    Agarwal, Neelima; Tiwari, V K; Tripathi, Anurag

    2009-01-01

    The first results on next-to-leading order QCD corrections to the production of two Z bosons, in hadronic collisions in the large extra dimension ADD model are presented. Various kinematical distributions are obtained to order $\\alpha_s$ in QCD by taking into account all the parton level subprocesses. We estimate the impact of the QCD corrections on various observables and find that they are significant. We also show the reduction in factorisation scale uncertainity when ${\\cal O}(\\alpha_s)$ effects are included.

  8. Extending MAM5 Meta-Model and JaCalIV E Framework to Integrate Smart Devices from Real Environments

    OpenAIRE

    Rincon, J. A.; Jose-Luis Poza-Lujan; V Julian; Juan-Luis Posadas-Yagüe; Carrascosa, C.

    2016-01-01

    This paper presents the extension of a meta-model (MAM5) and a framework based on the model (JaCalIVE) for developing intelligent virtual environments. The goal of this extension is to develop augmented mirror worlds that represent a real and virtual world coupled, so that the virtual world not only reflects the real one, but also complements it. A new component called a smart resource artifact, that enables modelling and developing devices to access the real physical world, and a human in th...

  9. Los hornos de cal en Gran Canaria : historia, evolución y tipología

    OpenAIRE

    Manzano Cabrera, Jorge L.

    2015-01-01

    Programa de doctorado: La Restauración y la Rehabilitación arquitetónica. Investigación, tendencias e innovaciones [ES]Tras nuestra investigación hemos podido concluir que los primeros hornos de cal en el Archipiélago Canario coinciden con los primeros asentamientos en el mismo de los franco-normandos, allá por los años 1402, los cuales fueron a asentarse en San Marcial del Rubicón en la isla de Lanzarote. De esta manera surgieron así y en dicho lu...

  10. An Upgraded Front-End Switching Power Supply Design For the ATLAS TileCAL Detector of the LHC

    CERN Document Server

    Drake, Gary; The ATLAS collaboration

    2011-01-01

    We present the design of an upgraded switching power supply brick for the front-end electronics of the ATLAS hadron tile calorimeter (TileCAL) at the LHC. The new design features significant improvement in noise, improved fault detection, and generally a more robust design, while retaining the compact size, water-cooling, output control, and monitoring features in this 300 KHz design. We discuss the improvements to the design, and the radiation testing that we have done to qualify the design. We also present our plans for the production of 2400 new bricks for installation on the detector in 2013.

  11. Chern-Simons-Higgs Theory with Visible and Hidden Sectors and its ${\\cal N}=2$ SUSY Extension

    CERN Document Server

    Arias, Paola; Schaposnik, Fidel A; Tallarita, Gianni

    2015-01-01

    We study vortex solutions in Abelian Chern-Simons-Higgs theories with visible and hidden sectors. We first consider the case in which the two sectors are connected through a BF-like gauge mixing term with no explicit interaction between the the two scalars. Since first order Bogomolny equations do not exist in this case, we derive the second order field equations. We then proceed to an ${\\cal N}=2$ supersymmetric extension including a Higgs portal mixing among the visible and hidden charged scalars. As expected, Bogomolnyi equations do exist in this case and we study their string-like solutions numerically.

  12. Alteração de atributos físicos em latossolo com aplicação superficial de escória de aciaria, lama cal, lodos de esgoto e calcário Oxisol physical attributes affected by surface application of flue dust, aqueous lime, sewage sludges and limestone

    OpenAIRE

    Juliano Corulli Corrêa; Leonardo Theodoro Bull; Carlos Alexandre Costa Crusciol; Maria Helena Moraes

    2009-01-01

    Os resíduos industriais e urbanos podem atuar como condicionadores do solo, pois possuem a capacidade de alterar suas propriedades físicas. Contudo, não há referência para os atributos físicos do solo quando esses resíduos são aplicados sobre a superfície do solo no sistema plantio direto. O objetivo deste trabalho foi avaliar o efeito da aplicação superficial de escória de aciaria, lama cal, lodos de esgoto e calcário nos atributos físicos de um Latossolo Vermelho distrófico sob sistema plan...

  13. Application of CalME incremental-recursive method to the evaluation of the structural condition as asphalt pavements; Aplicacion del metodo recursivo-incremental CalME a la evaluacion del estado estructural de los pavimentos bituminosas

    Energy Technology Data Exchange (ETDEWEB)

    Mateos Moreno, A.; Perez Ayuso, J.; Cadavid Jauregui, B.; Marron Fernandez, J. O.

    2011-07-01

    CalME procedure represents one of the most advanced tools for the design, of flexible pavements world-wide. It is an incremental-recursive method, which means that pavements service life must be divided into many time intervals where both structural integrity and environmental conditions can be regarded as constants. It also means that the damage calculated at the end of each interval must be considered as initial condition for the next one. The goal of this type of models is the prediction of the evolution of the different distress mechanisms. The advantages of incremental-recursive procedures versus classical analytical design are shown in this paper. Advantages are shown not only in terms of design, but also as a tool in order to support structural evaluation. In particular, the potential of asphalt fatigue model incorporated in CalME is presented. this model is initially calibrated in the laboratory, and it is then re-calibrated based on the actual performance observed from field deflection testing. The model provides a reliable prediction of the future evolution of the damage of the asphalt mixture. Fatigue model validation has been conducted based on the performance from several flexible sections evaluated in CEDEX full-scale pavements test track. (Author) 14 refs.

  14. Estimativa do filocrono em calêndula Estimating the phyllochron in calendula

    Directory of Open Access Journals (Sweden)

    Jana Koefender

    2008-08-01

    Full Text Available O objetivo deste trabalho foi estimar o filocrono em plantas de calêndula (Calendula officinalis L. cultivadas em diferentes épocas de semeaduras. Realizaram-se três épocas de semeaduras: 06/04/2005, 23/06/2005 e 03/10/2006, no interior de uma estufa plástica com área de 240m2, instalada no campus da Universidade Federal de Santa Maria, UFSM. A semeadura foi realizada em vasos plásticos com capacidade volumétrica para cinco litros. O delineamento experimental foi inteiramente casualizado com 320 vasos em cada época, sendo distribuído em quatro fileiras de 80 vasos cada. Em uma planta de oito vasos de cada quatro fileiras, fez-se a contagem, semanalmente, do número de folhas emergidas da haste principal e na primeira haste lateral. Os dados do número de folhas foram correlacionados com a soma térmica diária acumulada, considerando-se uma temperatura base de 8°C. Constatou-se que o filocrono variou com a época de semeadura, sendo o menor valor igual 15,9°C dia folha-1, obtido na 2ª época de semeadura e o maior, igual a 24,5°C dia folha-1, na 1ª época na haste principal e 48,9°C dia folha-1 na semeadura de outubro na primeira haste lateral.The objective of this study was to estimate the phyllochron in calendula (Calendula officinalis L. grown in different sowing dates. Three sowing dates (06/04/2005, 23/06/2005 and 03/10/2006 were performed inside a 240m2 plastic greenhouse at the Campus of the Federal University of Santa Maria, RS, Brazil. Sowing was in five liter plastic pots. The experimental design was a completely randomized with 320 pots on each sowing date and rows with 80 pots. The number of leaves in the main stem and oi the first lateral branch was counted on a weekly basis in one plant of eight pots. The number of leaves data was regressed against accumulated thermal time, assuming a base temperature of 8oC. The main stem phyllochron varied with sowing date, with the lowest value (15.9°C day leaf -1 obtained on

  15. Recursos y enlaces sobre comunidades de aprendizaje

    OpenAIRE

    Ferrer Esteban, Gerard

    2005-01-01

    Obras y artículos sobre el proyecto Comunidades de Aprendizaje desarrollado en el Estado español. Tesis doctorales sobre comunidades de aprendizaje. Fundamentación teórica de las comunidades de aprendizaje. Sitios en Internet relacionados con las comunidades de aprendizaje y proyectos afines de desarrollo comunitario en contextos escolares.

  16. On GAMER, plataforma de continguts sobre videojocs

    OpenAIRE

    Villegas Bonachera, José Ricardo

    2015-01-01

    Desenvolupament d'una plana web amb disseny responsiu sobre videojocs en català a partir del gestor de continguts WordPress. Desarrollo de una página web con diseño responsivo sobre videojuegos en catalán a partir del gestor de contenidos WordPress. Bachelor thesis for the Multimedia program on Computer Science.

  17. Escenarios sobre el orden internacional

    Directory of Open Access Journals (Sweden)

    Luis Dallanegra Pedraza

    2012-01-01

    Full Text Available Luego de las grandes cambios que se dieron con la caída del Muro de Berlín y la desintegración en la URSS, se analizan, desde una perspectiva realista-sistémicaestructural, los componentes que intervienen en la generación del orden mundial, qué factores intervienen y cuáles son las diferentes aspiraciones respecto de las características que debería tener. Se tiene en especial consideración la creciente heterogeneización del sistema y la manera en que actores transnacionales operan como motores del futuro orden, predominando por sobre las posibilidades del actor históricamente dominante: el Estado-Nación. Se estudian las características principales del funcionamiento del sistema internacional y el significado de su marco institucional.

  18. Constitucional sobre la justicia ordinaria

    Directory of Open Access Journals (Sweden)

    José Luis Cea Egaña

    2005-01-01

    Full Text Available El artículo analiza el efecto vinculante y de irradiación de las sentencias del Tribunal Constitucional sobre el conjunto del ordenamiento jurídico y de sus órganos. El autor toma partido por la consideración de la ratio decidendi del fallo como vinculante junto al dictum de la sentencia respectiva. Se plantea la necesidad que la LOC del Tribunal Constitucional explicite los efectos vinculantes de los fallos respecto de los tribunales ordinarios y especiales. Finalmente analiza los efectos de la res iudicata en el ámbito del control reparador de constitucionalidad de preceptos legales en control concreto y en control abstracto.

  19. Historicismo: notas sobre um paradigma

    Directory of Open Access Journals (Sweden)

    José D’Assunção Barros

    2012-08-01

    Full Text Available Este artigo tem por objetivo desenvolver algumas considerações sobre o Historicismo e sua possibilidade de ser examinado como um dos paradigmas que concorrem para o estabelecimento de uma história científica no século XIX. O primeiro ponto tratado é relativo às origens do paradigma Historicista na transição do século XVIII para o século XIX. Na sequência, aproximamo-nos da apropriação conservadora do paradigma historicista no novo contexto no qual a burguesia européia está assentada no Poder, combinando-se com a consolidação dos modernos estados-nações. A especificação das características deste paradigma constituem o principal ponto de análise

  20. As monografias sobre plantas medicinais

    Directory of Open Access Journals (Sweden)

    Valdir F. Veiga Junior

    2008-09-01

    Full Text Available As monografias sobre plantas medicinais ou drogas vegetais contêm informações para atender não somente aos órgãos de regulamentação, mas também às empresas industriais farmacêuticas e farmácias, e mesmo ao público consumidor. Este artigo revê as monografias da Comissão E, do American Botanical Council, ESCOP, PDR e da Organização Mundial de Saúde em suas origens, objetivos e formatos. Duas publicações recentemente organizadas pela FIOCRUZ do Rio de Janeiro e as contribuições da Farmacopéia Brasileira também são avaliadas.

  1. The Combination of Lecture-Based Education and Computer-Assisted learning (CAL in the Preliminary Hospital Pharmacy Internship Course

    Directory of Open Access Journals (Sweden)

    Mohammad Charkhpour

    2014-12-01

    Full Text Available Introduction: Developments in the field of information technology has profoundly affected our educational system. The efficacy of Computer-Assisted Learning (CAL has already been evaluated in medical education, but in this study, we examined the efficacy of CAL in combination with Lecture-Based Education.Methods: This quasi-experimental before and after study included 33 senior-year pharmacy students who had passed the preliminary hospital pharmacy internship course. Pre-test questionnaires were given to the students in order to examine their knowledge and attitudes. Then, three chemotherapy prescriptions were given to them. Pharmacology recourses also were available virtually. At the end, students were asked to answer post-test questionnaires with questions based upon knowledge and attitude.Results: The mean score of their knowledge was 3.48±2.04 of 20 before intervention and 17.82±2.31 of 20 after intervention. There was a statistically significant difference between the pre-test and post-testing scores (p<0.001. The mean attitude score of students before intervention was 42.48±15.59 (medium and their score after intervention was 75.97±21.03 (high. There was a statistically significant difference between pre-test and post-test results (p<0.000.Conclusion: The combination of Lecture-Based Education and Computer-Assisted Learning improved senior pharmacy students’ knowledge and attitude in hospital pharmacy internship course.

  2. TileCal Trigger Tower studies considering additional segmentation on the ATLAS upgrade for high luminosity at LHC

    CERN Document Server

    March, L; The ATLAS collaboration

    2013-01-01

    The Tile Calorimeter (TileCal) is the hadronic calorimeter covering the most central region of the ATLAS experiment at LHC. The TileCal readout consists of about 10000 channels and provides a compact information, called trigger towers (around 2000 signals), to the ATLAS first level online event selection system. The ATLAS upgrade program is divided in three phases: Phase 0 occurs during 2013- 2014 and prepares the LHC to reach peak luminosities of 10^34 cm2s-1; Phase 1, foreseen for 2018-1019, prepares the LHC for peak luminosity up to 2-3 x 10^34 cm2s-1, corresponding to 55 to 80 interactions per bunch-crossing with 25 ns bunch interval; and Phase 2 is foreseen for 2022-2023, whereafter the peak luminosity will reach 5-7 x 1034 cm2s-1 (HL-LHC). The ATLAS experiment is operating very well since 2009 providing large amount of data for physics analysis. The online event selection system (trigger system) was designed to reject the huge amount of background noise generated at LHC and is one of the main systems re...

  3. Application of CalME incremental-recursive method to the evaluation of the structural condition as asphalt pavements

    International Nuclear Information System (INIS)

    CalME procedure represents one of the most advanced tools for the design, of flexible pavements world-wide. IT is an incremental-recursive method, which means that pavements service life must be divided into many time intervals where both structural integrity and environmental conditions can be regarded as constants. It also means that the damage calculated at the end of each interval must be considered as initial condition for the next one. The goal of this type of models is the prediction of the evolution of the different distress mechanisms. The advantages of incremental-recursive procedures versus classical analytical design are shown in this paper. Advantages are shown not only in terms of design, but also as a tool in order to support structural evaluation. In particular, the potential of asphalt fatigue model incorporated in CalME is presented. this model is initially calibrated in the laboratory, and it is then re-calibrated based on the actual performance observed from field deflection testing. The model provides a reliable prediction of the future evolution of the damage of the asphalt mixture. Fatigue model validation has been conducted based on the performance from several flexible sections evaluated in CEDEX full-scale pavements test track. (Author) 14 refs.

  4. The X-ray eclipse geometry of the super-soft X-ray source CAL 87

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, T.; Lopes de Oliveira, R. [Departamento de Física, Universidade Federal de Sergipe, Av. Marechal Rondon s/n, 49100-000 São Cristóvão, SE (Brazil); Borges, B. W., E-mail: tribeiro@ufs.br, E-mail: rlopes@ufs.br, E-mail: bernardo@astro.ufsc.br [Universidade Federal de Santa Catarina, Campus Araranguá, 88905-120 Araranguá, SC (Brazil)

    2014-09-01

    We explore XMM-Newton observations of the eclipsing super-soft X-ray source CAL 87 in order to map the accretion structures of the system. Indirect imaging techniques were applied in X-ray light curves to provide eclipse maps. The surface brightness distribution exhibits an extended and symmetric emission, and a feature is revealed from the hardest X-rays that is likely due to a bright spot. A rate of P-dot =(+6±2)×10{sup −10} for changes in the orbital period of the system was derived from the eclipses. There is no significant variation of the emission lines even during eclipses, arguing that the lines are formed in an extended region. The continuum emission dominates the decrease in flux that is observed during eclipses. The O VIII Lyα line reveals a broadening velocity that is estimated to be 365{sub −69}{sup +65} km s{sup –1} (at 1σ), marginal evidence for asymmetry in its profile, and sometimes shows evidence of double-peaked emission. Together, the results support that the wind-driven mass transfer scenario is running in CAL 87.

  5. Proapoptotic Activity of Propolis and Their Components on Human Tongue Squamous Cell Carcinoma Cell Line (CAL-27).

    Science.gov (United States)

    Czyżewska, Urszula; Siemionow, Katarzyna; Zaręba, Ilona; Miltyk, Wojciech

    2016-01-01

    Propolis has been used since ancient times in folk medicine. It is a popular medicine possessing a broad spectrum of biological activities. This material is one of the richest sources of polyphenolic compounds such as flavonoids and phenolic acids. The ethanolic extract of propolis (EEP) evokes antibacterial, antiviral, antifungal and anticancer properties. Due to pharmacological properties it is used in the commercial production of nutritional supplements. In this study, gas chromatography coupled with mass spectrometry (GC-MS) was used to quantify main polyphenols in EEPs. The effect of EEPs, individual EEPs components (chrysin, galangin, pinocembrin, caffeic acid, p-coumaric acid, ferulic acid) and their mixture on viability of human tongue squamous cell carcinoma cell line (CAL-27) as well as the molecular mechanisms of the process were examined. The results of MTTs assay demonstrated that EEP, polyphenols and mixture of polyphenolic compounds were cytotoxic for CAL-27 cells in a dose dependent manner. The mechanism of cytotoxicity induced by these components undergoes through apoptosis as detected by flow cytometry. The ethanolic extracts of propolis activated caspases -3, -8, -9. Mixture of polyphenols was found as the most potent inducer of apoptosis thorough both intrinsic and extrinsic pathway. Therefore, we suggest that anticancer properties of propolis is related to synergistic activity of its main components. PMID:27281369

  6. A CubeSat for Calibrating Ground-Based and Sub-Orbital Millimeter-Wave Polarimeters (CalSat)

    CERN Document Server

    Johnson, Bradley R; Drysdale, Timothy D; Kalman, Andrew; Fujikawa, Steve; Keating, Brian; Kaufman, Jon

    2015-01-01

    We describe a low-cost, open-access, CubeSat-based calibration instrument that is designed to support ground-based and sub-orbital experiments searching for various polarization signals in the cosmic microwave background (CMB). All modern CMB polarization experiments require a robust calibration program that will allow the effects of instrument-induced signals to be mitigated during data analysis. A bright, compact, and linearly polarized astrophysical source with polarization properties known to adequate precision does not exist. Therefore, we designed a space-based millimeter-wave calibration instrument, called CalSat, to serve as an open-access calibrator, and this paper describes the results of our design study. The calibration source on board CalSat is composed of five "tones" with one each at 47.1, 80.0, 140, 249 and 309 GHz. The five tones we chose are well matched to (i) the observation windows in the atmospheric transmittance spectra, (ii) the spectral bands commonly used in polarimeters by the CMB c...

  7. SearchCal: a Virtual Observatory tool for searching calibrators in optical long baseline interferometry. I: The bright object case

    CERN Document Server

    Bonneau, D; Delfosse, X; Mourard, D; Cetre, S; Chelli, A; Cruzal`ebes, P; Duvert, G; Zins, G; Bonneau, Daniel

    2006-01-01

    In long baseline interferometry, the raw fringe contrast must be calibrated to obtain the true visibility and then those observables that can be interpreted in terms of astrophysical parameters. The selection of suitable calibration stars is crucial for obtaining the ultimate precision of interferometric instruments like the VLTI. We have developed software SearchCal that builds an evolutive catalog of stars suitable as calibrators within any given user-defined angular distance and magnitude around the scientific target. We present the first version of SearchCal dedicated to the bright-object case V<=10; K<=5). Star catalogs available at the CDS are consulted via web requests. They provide all the useful information for selecting of calibrators. Missing photometries are computed with an accuracy of 0.1 mag and the missing angular diameters are calculated with a precision better than 10%. For each star the squared visibility is computed by taking the wavelength and the maximum baseline of the foreseen ob...

  8. High-resolution study of planktic foraminifera from the eastern Mediterranean over the last 13 cal ka BP. Example from the Nile prodelta

    Science.gov (United States)

    Mojtahid, Meryem; Rose, Manceau; Ralf, Schiebel; Rick, Hennekam; Lange Gert, de

    2014-05-01

    A unique high-resolution record from the Nile prodelta has been investigated in order to study past hydrological and climatic changes in the southeastern Levantine region over the last 13 cal ka BP. To this end, we used planktic foraminifera (accumulation rates, diversity, assemblages and size properties) as bioindicators of the ecological characteristics of the water column (temperature, salinity, primary production and hydrology). These characteristics were mainly connected to Nile discharges and thermohaline circulation which in turn were controlled by various global and regional climatic forcing factors (e.g., orbital forcing, African and Indian Monsoon, North Atlantic Oscillation (NAO)). Our data showed seven main climatic periods: 1) from 13.0 to 11.5 cal ka BP encompassing the Younger Dryas and characterized by rather cold productive and mixed waters; 2) from 11.5 to 10.1 cal ka BP matching the start of the Holocene and the onset of the African Humid Period (AHP). This period was defined by surface water warming and increasing stratification due to increased river outflow; 3) from 10.1 to 6.4 cal ka BP encompassing the Sapropel deposit (S1) and matching the maximum of the AHP with drastic ecological conditions and maximum water stratification. During this period, the dominant warm taxon Globigerinoides ruber increased significantly in size and accumulation rate marking an opportunistic behavior and a total adaptation to the less saline and stratified waters. After 8.8 cal ka BP, the increase in diversity marked a progressive return to normal conditions; 4) from 6.4 to 2.9 cal ka BP, a progressive aridification period was recorded and the planktic ecosystem returned progressively to equilibrium conditions due to the recovery of thermohaline circulation after S1 and the decrease in Nile runoff; 5) from 2.9 to 1.1 cal ka BP, particular dry conditions were recorded leading to a severe drop in planktic diversity. These conditions seemed to be connected to a

  9. CalTOX (registered trademark), A multimedia total exposure model spreadsheet user's guide. Version 4.0(Beta)

    Energy Technology Data Exchange (ETDEWEB)

    McKone, T.E.; Enoch, K.G.

    2002-08-01

    CalTOX has been developed as a set of spreadsheet models and spreadsheet data sets to assist in assessing human exposures from continuous releases to multiple environmental media, i.e. air, soil, and water. It has also been used for waste classification and for setting soil clean-up levels at uncontrolled hazardous wastes sites. The modeling components of CalTOX include a multimedia transport and transformation model, multi-pathway exposure scenario models, and add-ins to quantify and evaluate uncertainty and variability. All parameter values used as inputs to CalTOX are distributions, described in terms of mean values and a coefficient of variation, rather than as point estimates or plausible upper values such as most other models employ. This probabilistic approach allows both sensitivity and uncertainty analyses to be directly incorporated into the model operation. This manual provides CalTOX users with a brief overview of the CalTOX spreadsheet model and provides instructions for using the spreadsheet to make deterministic and probabilistic calculations of source-dose-risk relationships.

  10. Aplicação superficial de escória, lama cal, lodos de esgoto e calcário na cultura da soja Surface application of flue dust, aqueous lime, sewage sludge and limestone on soybean crop

    Directory of Open Access Journals (Sweden)

    Juliano Corulli Corrêa

    2008-09-01

    Full Text Available O objetivo deste trabalho foi avaliar o efeito da aplicação superficial de lodos de esgoto, lama cal, escória de aciaria e calcário sobre o estado nutricional e a produtividade da soja, em sistema plantio direto. O delineamento foi o de blocos ao acaso em arranjo fatorial 4x4+1, constituído por quatro tratamentos - resíduos de lodo de esgoto centrifugado (LC e de biodigestor (LB, escória de aciaria (E e lama cal (Lcal - nas doses 0, 2, 4 e 8 Mg ha-1, mais o controle com 2 Mg ha-1 de calcário. As plantas de soja apresentaram maior concentração de nitrogênio, fósforo e cálcio, em 2003, 2004 e 2005, e de potássio, em 2003 e 2004, em razão dos tratamentos LC, LB, E, Lcal e calagem. A produtividade da soja foi favorecida pela aplicação dos tratamentos no sistema plantio direto, em 2003, 2004 e 2005. O fósforo, e o cálcio contribuíram para o aumento da produtividade da soja em 2003 e 2004.The objective of this work was to evaluate the effect of the surface application of sewage sludge, aqueous lime, flue dust and limestone on soybean nutrition and yield in notill system. The experiment was arranged in a randomized complete block design, in factorial scheme of 4x4+1, and consisted of four residues: centrifuged sewage sludge (CSS, biodigestor sewage sludge (BSS, flue dust (FD and aqueous lime (AL, at 0, 2, 4 and 8 Mg ha-1, and one additional control treatment with dolomitic limestone at 2 Mg ha-1. The soybean plants showed greater contents of nitrogen, phosphorus and calcium in 2003, 2004 and 2005, and potassium contents in 2003 and 2004, due to the treatments CSS, BSS, FD, AL and limestone. Soybean grain yield was also enhanced due to surface applications of the treatments in notill system in 2003, 2004 and 2005. The phosphorus and calcium contributed to increase soybean yield in 2003 and 2004.

  11. Puente sobre el rio Medway

    Directory of Open Access Journals (Sweden)

    Freeman, Fox, Ingenieros

    1963-02-01

    have been prestressed both longitudinally and transversally. Between the two circulation roadways an elastic barrier has been placed, supported on metal posts.El puente sobre el río Medway tiene la misión de salvar dicho río en el nuevo trazado de carretera necesario para aliviar el denso tráfico estival entre Dower y Londres. Está situado en las proximidades de la ciudad de Rochester. La estructura se ha construido utilizando las vías de concurso. De todos los tipos presentados se eligió una estructura de hormigón armado. La longitud total de la obra es de 1.000 m. Los tres tramos principales de la obra salvan el río. El central es de 152 m de luz, y los dos adyacentes son de 103 m cada uno. Los accesos tienen un total de 18 tramos, que arrojan una longitud de 654 m. La anchura del puente es de 34 m, y la calzada se ha subdividido en dos direcciones de tráfico de 7,30 m cada una y, además, se han dejado dos espaldones laterales de 2,40 m de anchura. En planta se puede admitir que el puente tiene una alineación recta con una ligerísima curva, y que en el plano vertical presenta una pendiente de desagüe entre las pilas 9 y 10. Los estribos son de hormigón armado: tipo celular el del este y de hormigón en masa el del oeste. Los estribos se apoyan sobre pilotes hexagonales de hormigón armado cuya circunferencia circunscrita tiene 55 cm de radio y de 12 a 20 m de longitud. Cuando el firme se hallaba a profundidades inferiores a 6 m, los estribos se cimentaban directamente sobre el firme. Las pilas constituyen pórtico y tienen una altura variable de 9 a 30 m sobre el nivel del suelo. Los tramos de acceso forman una estructura continua simplemente apoyada. Cada tramo se compone de ocho vigas longitudinales de 30 a 41 m de longitud y de 190 toneladas cada una. Estas vigas son del tipo pretensado y prefabricado. El tramo central es del tipo cantilever, constituido por dos brazos, de 30 m de longitud, formados por vigas cajón. Cada una de estas vigas consta

  12. A implementação da política de saúde mental em município de pequeno porte – o caso de São José do Calçado/ ES - Brasil (The implementation of mental health policies in small towns – the case of São José do Calçado / ES - Brazil

    Directory of Open Access Journals (Sweden)

    Maria Lúcia Teixeira Garcia

    2009-01-01

    Full Text Available Resumo: Este artigo analisa como o município de São José do Calçado (Espírito Santo, implantou o CAPs I em 2000 e estruturou, entre 2001 e 2007, sua rede de atenção à saúde mental. Utilizou-se uma abordagem qualitativa e, como método, o estudo de caso. Foi realizada pesquisa documental e visita ao município para contatos com o gestor municipal de saúde e coordenador do CAPs. Realizaram-se entrevistas semiestruturadas com cinco informantes-chaves sobre a política municipal de saúde mental. Para análise utilizou-se análise de conteúdo. A implantação do CAPs no município de São José do Calçado aconteceu em decorrência da constatação do alto índice de internações em Hospital Psiquiátrico (HP, motivadas tanto por transtornos mentais quanto por uso abusivo de substâncias psicoativas. Esses números chamavam a atenção dos técnicos da saúde pelo fluxo de usuários do Ambulatório de Saúde Mental existente em 1999 na cidade. Alguns atores políticos participaram desse processo: os atores governamentais (técnicos, e a comunidade (expressa na reação dos familiares ao tratamento dispensado pela Clínica a seus membros quando lá internados. O CAPs foi implantado e mantido com recursos da Prefeitura Municipal de São José do Calçado durante cinco anos, de 2000 até 2005, e a partir daí passou a contar com repasse do Ministério da Saúde para organização da rede municipal em saúde mental (sendo o CAPs responsável pela referência e contrarreferência em saúde mental. O estudo conclui que o CAPs vem buscando uma interação com outros serviços de saúde – especialmente os serviços de atenção primária – e também com outras secretarias da rede municipal, como a secretaria de Educação e a secretaria de Assistência Social. Isso nos permite dizer que há nesse percurso uma reafi rmação da necessidade do trabalho intersetorial. Entretanto, essa prática intersetorial delega ao PSF um papel marginal de

  13. Puente sobre el Oosterschelde, Holanda

    Directory of Open Access Journals (Sweden)

    Hoving, H. T.

    1967-03-01

    Full Text Available This new bridge, forming part of the Delta project, is made of concrete, and was built by successive overhangs. Precast units were mainly used. The bridge is 5,000 m long, and is 11.85 m wide. The main spans are 95 m in length, except one, which can be opened up to sea traffic, which is 40 m long. The free height of the bridge over the sea is 15 m, which is insufficient for large ships. This required that one of the spans, in deep water, should open up, on hinges, and provide free passage to large ships. The intermediate bridge supports are of special interest. They rest on piles which go down to 38 m. They are hollow, cylindrical, of 4.35 m external diameter, and are driven into the ground in several stages, as they penetrate through the sands at the bottom of the Oosterschelde. To drive them in, an excavating device, inside the pile, was utilised, and also a dredging and suction mechanism, to clean out the bottom, and allow the piles to sink by gravity. But when external friction did not allow this to happen, the piles were weighed down with up to 500 tons of ballast. A series of three of these piles, in a row, makes up each bridge support. A cross member over the pile heads supports, in turn, the bridge deck. The bridge was built in successive sections, overhanging from each support, and then finally connected with a central portion. Use of precast units has been very extensive, so that the bridge can be justiaflably regarded as being prefabricated.Este nuevo puente, que forma parte del Plan de obras denominadas del Delta, es de hormigón y se ha construido por el procedimiento de voladizos sucesivos, utilizando, en su mayor parte, elementos prefabricados. Tiene una longitud total de 5.000 m; una anchura de 11,85 m; tramos principales de 95 m de luz, salvo uno, levadizo, que tiene 40 m. La altura libre sobre las ag^uas del mar es de 15 m, que es insuficiente para las naves de gran tonelaje; esto exigió que uno de sus tramos, en aguas

  14. Progress toward studies of bubble-geometry Bose-Einstein condensates in microgravity with a ground-based prototype of NASA CAL

    Science.gov (United States)

    Lundblad, Nathan; Jarvis, Thomas; Paseltiner, Daniel; Lannert, Courtney

    2016-05-01

    We have proposed using NASA's Cold Atom Laboratory (CAL, launching to the International Space Station in 2017) to generate bubble-geometry Bose-Einstein condensates through radiofrequency dressing of an atom-chip magnetic trap. This geometry has not been truly realized terrestrially due to the perturbing influence of gravity, making it an ideal candidate for microgravity investigation aboard CAL. We report progress in the construction of a functional prototype of the orbital BEC apparatus: a compact atom-chip machine loaded by a 2D+MOT source, conventional 3D MOT, quadrupole trap, and transfer coil. We also present preliminary modeling of the dressed trap uniformity, which will crucially inform the geometric closure of the BEC shell surface as atom number, bubble radius, and bubble aspect ratio are varied. Finally, we discuss plans for experimental sequences to be run aboard CAL guided by intuition from ground-based prototype operation. JPL 1502172.

  15. Somos un envase : Discursos sobre el aborto

    OpenAIRE

    Löcher, Jennifer Irene

    2014-01-01

    No hay persona que no tenga opinión acerca del asunto y, cada vez más, la sociedad argentina debate sobre la pregunta de si se debe legalizar/despenalizar el aborto o no. Nunca antes se habló tanto sobre el tema públicamente: se publican artículos en los diarios, hay manifestaciones a favor y hay manifestaciones en contra de la legalización del aborto. El siguiente trabajo pretende relevar y analizar discursos que circulan socialmente alrededor del debate sobre el aborto. (Párrafo extraíd...

  16. Concepciones sobre la docencia universitaria de calidad

    OpenAIRE

    Arbeláez López, Ruby; Fortes del Valle, M. Carmen; Grau Rubio, Claudia

    2008-01-01

    Con esta investigación hemos querido participar en el proceso de búsqueda y construcción del sentido de calidad aplicado a la docencia universitaria, con el objetivo general de evidenciar las concepciones sobre docencia de calidad que pueden deducirse de los procesos de evaluación de los profesores universitarios. Nuestra meta final intenta propiciar la revisión de las políticas educativas y el enriquecimiento de la cultura sobre docencia y sobre evaluación docente. La mayor aportación de nue...

  17. Justice française en Nouvelle-Calédonie  la fin du rêve tropical French judicial practice in Nouvelle-Calédonie: the end of a tropical dream

    Directory of Open Access Journals (Sweden)

    Pierre Frezet

    2009-04-01

    Full Text Available Territoire d’outre-mer. - Nouvelle-Calédonie. - Article 77 de la Constitution de 1958. - Loi organique n°99-209 du 19 mars 1999. - Statut coutumier kanak. – Portée de l’article 7 de la loi précitée. - Composition du tribunal pour enfants saisi en matière d’assistance éducative en présence de parties de statut coutumier Kanak.SOMMAIRE. – Conformément à l’article 7 de la loi organique n°99-209 du 19 mars 1999 les personnes de statut coutumier kanak étant régies, pour l’ensemble du droit civil, ...

  18. ROCK inhibitor Y-27632 inhibits the growth, migration, and invasion of Tca8113 and CAL-27 cells in tongue squamous cell carcinoma.

    Science.gov (United States)

    Wang, Zhi-Ming; Yang, Dong-Sheng; Liu, Jie; Liu, Hong-Bo; Ye, Ming; Zhang, Yu-Fei

    2016-03-01

    The objective of this study is to determine the effects of Rho-associated coiled-coil containing protein kinase (ROCK) inhibitor Y-27632 on the growth, invasion, and migration of Tca8113 and CAL-27 cells in tongue squamous cell carcinoma (TSCC). The methods of the study are as follows: After being routinely cultured for 24 h, Tca8113 and CAL-27 cells were treated with Y-27632 solution. The morphological change of Y-27632-treated cells was observed under an optical microscope and an inverted microscope; MTT assay was performed to measure the optical density (OD) of cells and calculate cell growth inhibition rate; the change of apoptosis was detected by AnnexinV-FITC/PI assay; cell invasion and migration were measured by Transwell assay. The results were as follows: (1) With increasing concentration of Y-27632, cell morphology changed and cell apoptosis appeared; (2) MTT assay showed that inhibition effect of Y-27632 on Tca8113 and CAL-27 cells was enhanced with increasing concentrations and time (all P Y-27632; (4) Transwell assay showed, after a treatment with Y-27632, the number of migrated and invaded Tca8113 and CAL-27 cells in each group was statistically different (all P Y-27632 was decreased and less Tca8113 and CAL-27 cells in experimental groups passed through polycarbonate membrane (all P Y-27632 can inhibit the growth, invasion, and migration of Tca8113 and CAL-27 cells, suggesting that Y-27632 may be therapeutically useful in TSCC.

  19. In Situ FT-IR Spectroscopic Studies of CO Adsorption on Fresh Mo2C/Al2O3 Catalyst.

    Science.gov (United States)

    Wu, Weicheng; Wu, Zili; Liang, Changhai; Chen, Xiaowei; Ying, Pinliang; Li, Can

    2003-07-24

    The surface sites of supported molybdenum carbide catalyst derived from different synthesis stages have been studied by in situ FT-IR spectroscopy using CO as the probe molecule. Adsorbed CO on the reduced passivated Mo2C/Al2O3 catalyst gives a main band at 2180 cm(-1), which can be assigned to linearly adsorbed CO on Mo(4+) sites. The IR results show that the surface of reduced passivated sample is dominated by molybdenum oxycarbide. However, a characteristic IR band at 2054 cm(-1) was observed for the adsorbed CO on MoO3/Al2O3 carburized with CH4/H2 mixture at 1033 K (fresh Mo2C/Al2O3), which can be assigned to linearly adsorbed CO on Mo(δ+) (0 Mo2C/Al2O3. Unlike adsorbed CO on reduced passivated Mo2C/Al2O3 catalyst, the IR spectra of adsorbed CO on fresh Mo2C/Al2O3 shows similarity to that on some of the group VIII metals (such as Pt and Pd), suggesting that fresh carbide resembles noble metals. To study the stability of Mo2C catalyst during H2 treatment and find proper conditions to remove the deposited carbon species, H2 treatment of fresh Mo2C/Al2O3 catalyst at different temperatures was conducted. Partial amounts of carbon atoms in Mo2C along with some surface-deposited carbon species can be removed by the H2 treatment even at 450 K. Both the surface-deposited carbon species and carbon atoms in carbide can be extensively removed at temperatures above 873 K.

  20. FlowCal: A User-Friendly, Open Source Software Tool for Automatically Converting Flow Cytometry Data from Arbitrary to Calibrated Units.

    Science.gov (United States)

    Castillo-Hair, Sebastian M; Sexton, John T; Landry, Brian P; Olson, Evan J; Igoshin, Oleg A; Tabor, Jeffrey J

    2016-07-15

    Flow cytometry is widely used to measure gene expression and other molecular biological processes with single cell resolution via fluorescent probes. Flow cytometers output data in arbitrary units (a.u.) that vary with the probe, instrument, and settings. Arbitrary units can be converted to the calibrated unit molecules of equivalent fluorophore (MEF) using commercially available calibration particles. However, there is no convenient, nonproprietary tool available to perform this calibration. Consequently, most researchers report data in a.u., limiting interpretation. Here, we report a software tool named FlowCal to overcome current limitations. FlowCal can be run using an intuitive Microsoft Excel interface, or customizable Python scripts. The software accepts Flow Cytometry Standard (FCS) files as inputs and is compatible with different calibration particles, fluorescent probes, and cell types. Additionally, FlowCal automatically gates data, calculates common statistics, and produces publication quality plots. We validate FlowCal by calibrating a.u. measurements of E. coli expressing superfolder GFP (sfGFP) collected at 10 different detector sensitivity (gain) settings to a single MEF value. Additionally, we reduce day-to-day variability in replicate E. coli sfGFP expression measurements due to instrument drift by 33%, and calibrate S. cerevisiae Venus expression data to MEF units. Finally, we demonstrate a simple method for using FlowCal to calibrate fluorescence units across different cytometers. FlowCal should ease the quantitative analysis of flow cytometry data within and across laboratories and facilitate the adoption of standard fluorescence units in synthetic biology and beyond.

  1. FlowCal: A User-Friendly, Open Source Software Tool for Automatically Converting Flow Cytometry Data from Arbitrary to Calibrated Units.

    Science.gov (United States)

    Castillo-Hair, Sebastian M; Sexton, John T; Landry, Brian P; Olson, Evan J; Igoshin, Oleg A; Tabor, Jeffrey J

    2016-07-15

    Flow cytometry is widely used to measure gene expression and other molecular biological processes with single cell resolution via fluorescent probes. Flow cytometers output data in arbitrary units (a.u.) that vary with the probe, instrument, and settings. Arbitrary units can be converted to the calibrated unit molecules of equivalent fluorophore (MEF) using commercially available calibration particles. However, there is no convenient, nonproprietary tool available to perform this calibration. Consequently, most researchers report data in a.u., limiting interpretation. Here, we report a software tool named FlowCal to overcome current limitations. FlowCal can be run using an intuitive Microsoft Excel interface, or customizable Python scripts. The software accepts Flow Cytometry Standard (FCS) files as inputs and is compatible with different calibration particles, fluorescent probes, and cell types. Additionally, FlowCal automatically gates data, calculates common statistics, and produces publication quality plots. We validate FlowCal by calibrating a.u. measurements of E. coli expressing superfolder GFP (sfGFP) collected at 10 different detector sensitivity (gain) settings to a single MEF value. Additionally, we reduce day-to-day variability in replicate E. coli sfGFP expression measurements due to instrument drift by 33%, and calibrate S. cerevisiae Venus expression data to MEF units. Finally, we demonstrate a simple method for using FlowCal to calibrate fluorescence units across different cytometers. FlowCal should ease the quantitative analysis of flow cytometry data within and across laboratories and facilitate the adoption of standard fluorescence units in synthetic biology and beyond. PMID:27110723

  2. X-ray Energy Spectra of the Super-soft X-ray Sources CAL87 and RXJ0925.7-4758 Observed with ASCA

    OpenAIRE

    Ebisawa, K; Mukai, K.; Kotani, T.; Asai, K.; Dotani, T.; Nagase, F.; Hartmann, H. W.; Heise, J.; Kahabka, P.; Teeseling, A.

    2000-01-01

    We report observation results of the super-soft X-ray sources (SSS) CAL87 and RXJ0925.7-4758 with the X-ray CCD cameras (Solid-state Imaging Spectrometer; SIS) on-board the ASCA satellite. We have applied theoretical spectral models to CAL87, and constrained the white dwarf mass and intrinsic luminosity as 0.8 - 1.2 M_solar and 4 x 10^{37}- 1.2 x 10^{38} erg s^{-1}, respectively. However, we have found the observed luminosity is an order of magnitude smaller than the theoretical estimate, whi...

  3. Research on Implementation Process of Weapon Informatization Based on CALS%基于CALS的武器装备信息化建设研究

    Institute of Scientific and Technical Information of China (English)

    彭文均

    2012-01-01

    The definition of CALS (Continuous Acquisition and life-cycle Support) is that during the life cycle of weapons, in-formation technique is used to manage weapons and engineering technical data. With the fast development of defense technique and the improvement of weapons performance, the cycle of research and development is increased accordingly, which makes the maintenance and acquisition of weapons more and more difficult. Since traditional paper medium is not qualified for information instantaneity and stability of defense department, the paper studies how to apply CALS to the implementation process of weapon informatization. Based on describing the rationale of CALS, the key techniques of CALS are analyzed and the possible difficulties and problems which could be encountered during the implementation process of weapon informatization are pointed out. Moreover, the paper proposes the idea of implementation process of weapon informatization based on CALS. The conclusions are drawn that using CALS contributes to shorten the cycle of research and development and save the costs. Furthermore, CALS is an important strategy measure of boosting the implementation process of weapon informatization.%CALS即持续采办与全寿命周期保障,其含义是指在武器装备的全生命周期过程中,采用信息技术对武器装备和工程技术数据进行数字化管理.随着国防科学技术的不断发展,武器装备的性能日益提高,开发研制周期也相应地延长,使得维护与采办变得愈发困难.由于传统的纸质载体无法满足国防军事部门在信息实时性和可靠性方面的要求,因此,对武器装备信息化建设过程中如何运用CALS进行了研究.在描述CALS的基本原理的基础上,分析CALS的关键技术,指出在武器装备信息化建设中实施CALS可能遇到的困难和问题,提出基于CALS的武器装备信息化建设构想.研究表明:实施CALS有助于缩短研发周期和节省费用,是推进

  4. Application of CALS in Weaponry Information Construction%CALS在武器装备信息化建设中的应用

    Institute of Scientific and Technical Information of China (English)

    李雄; 徐宇昌

    2005-01-01

    1985年9月,美国国防部率先推行“计算机辅助后勤保障”(Computer-Aided Logistic SupPort—CALS)。随着信息技术的发展和在武器装备采办需求的牵引下,CALS的概念、应用范围及技术手段不断扩大,目前CALS在国防领域称为“持续采办与寿命周期保障”(Continuous Acquisition And Life-cycle Support CALS),

  5. Wavepacket Self-imaging and Giant Recombinations via Stable Bloch-Zener Oscillations in Photonic Lattices with Local ${\\cal PT}$-Symmetry

    CERN Document Server

    Bender, N; Ellis, F M; Kottos, T

    2015-01-01

    We propose a family of {\\it local} $\\cal{PT}$-symmetric photonic lattices with transverse index gradient $\\omega$, where the emergence of {\\it stable} Bloch-Zener oscillations are controlled by the degree of non-Hermiticity $\\gamma$ of the lattice. In the exact $\\cal{PT}$-symmetric phase we identify a condition between $\\omega$ and $\\gamma$ for which a wavepacket self -imaging together with a cascade of splittings and giant recombinations occurs at various propagation distances. The giant wavepacket recombination is further enhanced by introducing local impurities.

  6. Sobre a psicopatologia dos atos

    Directory of Open Access Journals (Sweden)

    Roberto Calazans

    2015-07-01

    Full Text Available Este artigo pretende apresentar a psicopatologia dos atos a partir do esquema de Jacques Lacan sobre a angústia. Diferenciamos os acting-out, a passagem ao ato, os sintomas, as inibições e a angústia fazendo uma duplicação do esquema de Lacan levando em consideração os registros do simbólico, do real e do imaginário. Esse esquema permite uma abordagem da questão dos atos do sujeito sem cair em uma perplexidade do clínico, nem na confusão entre os atos e a ação. Permite também uma melhor orientação do clínico em relação às diversas modalidades de respostas subjetivas que não se restringem à questão sintomática, que é o campo inaugural da clínica psicanalítica desde a sua fundação por Sigmund Freud. Acreditamos contribuir, assim, para um maior esclarecimento desse esquema no ensino de Lacan e para que ele possa servir de orientação para o tratamento dos atos do sujeito na clínica.

  7. Estudo multicasos sobre atividades inovativas

    Directory of Open Access Journals (Sweden)

    Sonia Regina Hierro Parolin

    2013-09-01

    Full Text Available Em estudos sobre competitividade argumenta-se que as empresas necessitam de estratégias baseadas em inovações e de capacidades internas em constantes e intensas transformações, não somente nos padrões tecnológicos, mas também no encadeamento do processo de gestão das atividades inovativas, como processos dinâmicos, não lineares e diversificados, em função de múltiplos fatores dos ambientes interno e externo. Para contribuir com essas discussões, neste artigo apresenta-se um estudo multicasos em quatro indústrias de médio e grande portes, de segmentos, densidades tecnológicas e históricos com inovações diferentes entre si. Como principais resultados, salientam-se o encadeamento das atividades inovativas como parte de uma estratégia organizacional para obter resultados com inovação e a afluência de todas as pessoas, e não somente as alocadas em pesquisa e desenvolvimento, para o cumprimento dessa estratégia.

  8. PERSPECTIVAS INFANTILES SOBRE LA TERRITORIALIDAD

    Directory of Open Access Journals (Sweden)

    Noelia Enriz

    2009-12-01

    Full Text Available En este trabajo nos proponemos un acercamiento a las diversas ideas infantiles sobre el territorio habitado, en el contexto particular de la población mbyá guaraní de Misiones. La fragilidad territorialidad a la que es expuesta la población indígena en Argentina se manifiestan cotidianamente en diversas áreas. La población mbyá, ha sido surcada por los límites de los estados nacionales de Paraguay, Brasil y Argentina. La sedentarización y los cercamientos de tierras en los diferentes estados, han impulsado transformaciones de las lógicas de subsistencia, de habitación y organización comunitaria. En el caso de la provincia de Misiones la acreditación burocrática de los títulos de tierras se encuentra aplazada, el estado no se compromete con la concreción de este derecho.

  9. Puente colgante sobre el Lillebaelt

    Directory of Open Access Journals (Sweden)

    Ostenfeld, Chr.

    1971-09-01

    Full Text Available This bridge, which was opened to traffic in October 1970 over the Lillebaelt, is the first of its kind in Denmark. It consists of a central span of 600 m, and two lateral ones of 240 m length each. The suspension cables, each 1,500 m, are the world's largest prefabricated cables. The bridge has original features, such as flaps on the main box girder, and new design of the anchorage blocks. These and other details are described in the article.Inaugurado en octubre de 1970, el puente colgante sobre el Lillebselt es el primer puente danés de este tipo. Consta de un tramo central de 600 m y dos tramos laterales de 240 m. Los cables sustentantes son, con sus 1.500 m de longitud, los mayores cables prefabricados del mundo. El puente presenta características origínales —empleo de «flaps» en la vigacajón de la superestructura, concepción nueva de los macizos de anclaje...— que, junto con el sistema de ejecución y las demás particularidades de la obra, son descritas en el artículo.

  10. Ammonium ion interaction with conditioned natural zeolite with silver and its effect on the disinfection of polluted water in front of a consortium of gram (+) and gram (-) microorganisms; Interaccion del ion amonio con zeolita natural acondicionada con plata y su efecto sobre la desinfeccion de agua contaminada frente a un consorcio de microorganismos gram (+) y gram (-)

    Energy Technology Data Exchange (ETDEWEB)

    Gonzaga G, V. E.

    2013-07-01

    Clinoptilolite zeolite material is a relative abundance in Mexico, which has ion exchange properties, therefore, has the ability to retain metal ions giving it an application in the process of disinfecting of water contaminated with pathogenic microorganisms. In this research, we conducted a study of disinfection of water contaminated with a microbial consortium, from a zeolite rock clinoptilolite from a deposit located in the State of Guerrero. Initially, the zeolite prepared by the grinding and sieving, for conditioning with NaCl and subsequently with AgNO{sub 3}, finally to be characterized using the techniques of scanning electron microscopy and X-ray diffraction. Tests using columns packed with zeolite material, the effect of zeolite bactericidal conditioned with silver (ZGAg) against a microbial consortium consisting of Escherichia coli and Sthapyloccocus aureus in aqueous solution in the presence of ammonium ions used to increase the ion exchange with zeolite fitted with silver. To describe curves disinfecting a continuous flow system is adapted Gu pta model, which describes the kinetics and equilibrium adsorption process, considering the microorganisms as the adsorbate and the sanitizing agent (conditioned with silver zeolite) as the adsorbent. Characterization results show that in the scanning electron microscopy (Sem), no changes were obtained on the morphology of typical clinoptilolite crystals before and after that was modified with sodium and then with silver, it is worth mentioning however that fitted with silver zeolite (ZGAg), small particles are seen on the zeolite material which when analyzed by energy dispersive spectroscopy (EDS), we found a high concentration of Ag +. The disinfection period is increased as the concentration increased ammonium ions, this behavior is attributed to the ion exchange that occurs between the ammonium ions and silver ions. A lower percentage of inactivation is due, therefore, to a lesser amount of money available to be exchanged for ammonium ions, which leads to less disinfection. (Author)

  11. Los derechos de autor sobre obtenciones vegetales

    Directory of Open Access Journals (Sweden)

    Rosario Silva Gilli

    2015-01-01

    Full Text Available Contenido: Las creaciones en la agricultura. Los derechos de autor sobre obtenciones vegetales. El Convenio Internacional para la protección de las obtenciones vegetales (París 1961 y sus revisiones de Ginebra 1972, 1978,1991 Objeto de la protección legal. Condiciones del cultivar. Alcance de la protección. La protección de obtenciones vegetales en el Mercosur. Los Derechos de autor en el Mercosur. El Protocolo de Armonización de normas sobre Propiedad Intelectual en el Mercosur. El Acuerdo de Cooperación y facilitación sobre la protección de las obtenciones vegetales en los Estados Partes del Mercosur.  Alcance de la normativa Mercosur. Los Derechos sobre cultivares en Uruguay. Los Derechos de autor como derechos humanos. ¿Derechos de autor vs. derecho de propiedad intelectual? Reflexión final

  12. Riscos ocupacionais de uma indústria calçadista sob a ótica dos trabalhadores

    Directory of Open Access Journals (Sweden)

    Fernanda Reinher da Luz

    2013-02-01

    Full Text Available O estudo teve como objetivo identificar os riscos ocupacionais de uma indústria calçadista sob a ótica dos trabalhadores, bem como as medidas preventivas adotadas por eles contra os riscos. Realizou-se um estudo qualitativo, descritivo. A amostra foi composta por quinze trabalhadores. Os dados foram coletados por entrevista semiestruturada e analisados à luz da análise de conteúdo. Foram respeitados os aspectos éticos e a pesquisa foi aprovada pelo Comitê de Ética em Pesquisa da Universidade Regional do Noroeste do Estado do Rio Grande do Sul. Os resultados apontam que os trabalhadores são conhecedores dos riscos do seu processo de trabalho, faziam uso de medidas de proteção individual e a empresa disponibilizava dispositivos de segurança, informando e realizando, periodicamente, visitas aos setores, na perspectiva de desenvolver ações educativas.

  13. La triple existence de l’argent dans les îles Loyauté (Nouvelle-Calédonie)

    OpenAIRE

    Faugere, Elsa

    2009-01-01

    Comment ce petit bout de papier coloré que l’on appelle « billet de banque » peut-il faire autant peur aux Kanaks ? Un objet aussi inoffensif posséderait-il réellement cet étrange pouvoir de révolutionner la société et la culture? C’est à partir de descriptions ethnographiques effectuées en Nouvelle‑Calédonie sur l’île de Maré que je voudrai apporter des éléments de réponse à ces questions. Les spécificités de l’argent, si elles existent, ne résident pas, comme le prétendent les sens communs ...

  14. Unitarity, Crossing Symmetry and Duality in the scattering of ${\\cal N}=1$ Susy Matter Chern-Simons theories

    CERN Document Server

    Inbasekar, Karthik; Mazumdar, Subhajit; Minwalla, Shiraz; Umesh, V; Yokoyama, Shuichi

    2015-01-01

    We study the most general renormalizable ${\\cal N}=1$ $U(N)$ Chern-Simons gauge theory coupled to a single (generically massive) fundamental matter multiplet. At leading order in the 't Hooft large $N$ limit we present computations and conjectures for the $2 \\times 2$ $S$ matrix in these theories; our results apply at all orders in the 't Hooft coupling and the matter self interaction. Our $S$ matrices are in perfect agreement with the recently conjectured strong weak coupling self duality of this class of theories. The consistency of our results with unitarity requires a modification of the usual rules of crossing symmetry in precisely the manner anticipated in arXiv:1404.6373, lending substantial support to the conjectures of that paper. In a certain range of coupling constants our $S$ matrices have a pole whose mass vanishes on a self dual codimension one surface in the space of couplings.

  15. Non-renormalization of the $V\\bar cc$-vertices in ${\\cal N}=1$ supersymmetric theories

    CERN Document Server

    Stepanyantz, K V

    2016-01-01

    Using the Slavnov--Taylor identities we prove that the three-point ghost vertices with a single line of the quantum gauge superfield are not renormalized in all loops in ${\\cal N}=1$ supersymmetric gauge theories. This statement is verified by the explicit one-loop calculation made by the help of the BRST invariant version of the higher covariant derivative regularization. Using the restrictions to the renormalization constants which are imposed by the non-renormalization of the considered vertices we express the exact NSVZ $\\beta$-function in terms of the anomalous dimensions of the Faddeev--Popov ghosts and of the quantum gauge superfield. In the expression for the NSVZ $\\beta$-function obtained in this way the contributions of the Faddeev--Popov ghosts and of the matter superfields have the same structure.

  16. Compte rendu de Nickel. La naissance de l’industrie calédonienne, de Yann Bencivengo

    OpenAIRE

    Mohamed-Gaillard, Sarah

    2016-01-01

    C’est dans la belle collection Perspective historique des Presses universitaires François Rabelais que Yann Bencivengo publie une monographie de La Société Le Nickel, de la découverte des gisements calédoniens par Jules Garnier en 1864 à la veille de la Première Guerre mondiale. Ce texte de 327 pages, suivi d’un volumineux dossier d’annexes, constitue une version remaniée de la thèse d’histoire que Yann Bencivengo a soutenue en 2010 à l’université Paris I, et qui a reçu le prix Crédit agricol...

  17. Pêcheurs kanak et politiques de développement de la pêche en Nouvelle-Calédonie

    OpenAIRE

    Leblic, I.

    1999-01-01

    Si, en Nouvelle-Calédonie, beaucoup de recherches ont été réalisées sur l'agriculture, rares sont celles qui concernent la pêche. Aucune étude ethnologique sur les sociétés de pêcheurs kanak n'existait en 1982 lorsque j'ai commencé mes recherches sur les clans pêcheurs de l'île des Pins. Les seules références bibliographiques, que j'ai pu trouver à l'époque, traitaient de biologie marine, d'océnographie, sans oublier quelques nomenclatures de poissons et coquillages réalisées par des linguist...

  18. The quantum 1/2 BPS Wilson loop in ${\\cal N}=4$ Chern-Simons-matter theories

    CERN Document Server

    Bianchi, Marco S; Leoni, Matias; Mauri, Andrea; Penati, Silvia; Seminara, Domenico

    2016-01-01

    In three dimensional ${\\cal N}=4$ Chern-Simons-matter theories two independent fermionic Wilson loop operators can be defined, which preserve half of the supersymmetry charges and are cohomologically equivalent at classical level. We compute their three-loop expectation value in a convenient color sector and prove that the degeneracy is uplifted by quantum corrections. We expand the matrix model prediction in the same regime and by comparison we conclude that the quantum 1/2 BPS Wilson loop is the average of the two operators. We provide an all-loop argument to support this claim at any order. As a by-product, we identify the localization result at three loops as a correction to the framing factor induced by matter interactions. Finally, we comment on the quantum properties of the non-1/2 BPS Wilson loop operator defined as the difference of the two fermionic ones.

  19. Suplementação de cloreto de potássio para frangos de corte submetidos a estresse calórico Potassium chloride supplementation in heat stressed broilers

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    Sebastião Aparecido Borges

    1999-04-01

    Full Text Available O experimento foi realizado com objetivo de avaliar os efeitos do estresse calórico e da suplementação de cloreto de potássio (KCl sobre o desempenho e algumas características fisiológicas de frangos de corte. Quarenta aves, no período de 42 a 49 dias, foram submetidas ao estresse calórico (16 horas a 25 ± 1ºC; duas horas com temperatura crescente; quatro horas a 35 ± 1ºC; e duas horas com temperatura decrescente até a termoneutralidade e com umidade relativa de 63,5 ± 5%, recebendo os seguintes tratamentos: 0,50 e 1,00% KCl na ração; 0,25 e 0,50% KCl na água de bebida. A ração à base de milho e farelo de soja, com 20% de proteína bruta e 3200 kcal EM/kg, foi fornecida ad libitum. A suplementação de KCl na ração ou na água de beber não influiu no ganho de peso, nos consumos de ração e água, na conversão alimentar, na mortalidade, na relação água/ração, no teor de matéria seca das excretas e nas características hematológicas. O estresse calórico aumentou a temperatura retal, o hematócrito, a hemoglobina, o heterófilo e a relação heterófilo/linfócito e reduziu as hemácias, o linfócito, o sódio e o potássio sérico. A suplementação de KCl na água regulou o número de eritrócitos e a hemoglobina em frangos estressados pelo calor. A relação heterófilo:linfócito e a temperatura retal podem ser usadas como índices de estresse.The experiment was conducted to estimate the effect of heat stress and the potassium chloride (KCl supplementation on performance and physiological characteristics (hematological parameters, rectal temperature of broiler chicks. Forty birds, from 42 to 49 days, were submitted to heat stress (16 hours in 25 ± 1°C, two hours at increasing temperature, four hours in 35 ± 1°C and two hours at decreasing temperature until 25±1°C, with 63.5 ± 5% humidity fed the following treatments: .50 and 1.00% KCl in the diet; .25 and .50% KCl in the drinking water. Corn-soybean meal

  20. PERSPECTIVAS INFANTILES SOBRE LA TERRITORIALIDAD

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    NOELIA ENRIZ

    2009-12-01

    Full Text Available In this paper we propose a different approach to children's ideas about the geographical area in the particular context of the Mbyá Guarani population, from Misiones (Argentine. The territorial fragility, that is exposed to the indigenous people in Argentina aremanifested daily in several areas. Mbyá population, has been crossed by the boundaries of national states of Paraguay, Brazil and Argentina. The sedentary and enclosures land processes in different states, have prompted changes in the logic of subsistence, housing and community organization. In Misiones province case, bureaucratic accreditation of land titles is postponed, the state is not committed to the realization of this right.RESUMEN: En este trabajo nos proponemos un acercamiento a las diversas ideas infantiles sobre el territorio habitado, en el contexto particular de la población mbyá guaraní de Misiones. La fragilidad territorialidad a la que es expuesta la población indígena en Argentina se manifiestan cotidianamente en diversas áreas. La población mbyá, ha sido surcada por los límites de los estados nacionales de Paraguay, Brasil y Argentina. La sedentarización y los cercamientos de tierras en los diferentes estados, han impulsado transformaciones de las lógicas de subsistencia, de habitación y organización comunitaria. En el caso de la provincia de Misiones la acreditación burocrática de los títulos de tierras se encuentra aplazada, el estado no se compromete con la concreción de este derecho.

  1. Consideraciones preliminares sobre la credibilidad

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    Fernando Verdugo

    2004-01-01

    Full Text Available A modo de introducción al Seminario Interno de Profesores de la Facultad de Teología de la PUC, el autor recuerda, en primer lugar, lo que suele entenderse por "credibilidad" y, también, algunos de los criterios generales por los cuales algo o alguien adquiere la calidad de creíble (el que sea razonable, relevante o significativo, capaz de producir gozo estético, etc.. Luego, en la parte más extensa, el autor vuelve a llamar la atención sobre la necesidad de atender a los condicionamientos culturales de la fe cristiana. La fe, al igual que toda experiencia humana, está culturalmente mediada. Tomar conciencia de ese hecho y asumir las consecuencias metodológicas es indispensable para una teología que quiere poner atención a los desafíos actuales y contribuir así a la credibilidad del cristianismoThis article reprints the introductory session to the internal seminar of lecturers from the Faculty of Theology of the UC. In the first place, the author sums up what is usually understood by `credibility' and the general criteria through which something or someone gains credibility (being reasonable, relevant or significant, capable of producing aesthetic pleasure. Then the author deals at length with the need to take notice of the cultural conditionings of the Christian faith. The faith, the same as any other human experience, is culturally mediated. It is crucial for theology to become aware of this fact and come to terms with its methodological consequences, if it wants to face current challenges and so contribute to the credibility of Christianity

  2. Biochemical determination of enzyme-bound metabolites: preferential accumulation of a programmed octaketide on the enediyne polyketide synthase CalE8.

    Science.gov (United States)

    Belecki, Katherine; Townsend, Craig A

    2013-09-25

    Despite considerable interest in the enediyne family of antitumor antibiotics, assembly of their polyketide core structures in nature remains poorly understood. Discriminating methods to access enzyme-bound intermediates are critical for elucidating unresolved polyketide and nonribosomal peptide biosynthetic pathways. Here, we describe the development of broadly applicable techniques for the mild chemical release and analysis of intermediates bound to carrier proteins (CPs), providing access to these species even in sensitive systems. These techniques were applied to CalE8, the polyketide synthase (PKS) involved in calicheamicin biosynthesis, facilitating the unambiguous identification of enzyme-bound polyketides on an enediyne PKS. Moreover, these methods enabled the preparation of fully unloaded CalE8, providing a "clean slate" for reconstituted activity and allowing us to demonstrate the preferential accumulation of a PKS-bound octaketide with evidence of programmed processing control by CalE8. This intermediate, which has the expected chain length for enediyne core construction, could previously only be indirectly inferred. These studies prove that this polyketide is an authentic product of CalE8 and may be a key precursor to the enediyne core of calicheamicin, as it is the only programmed, enzyme-bound species observed for any enediyne system to date. Our experimental advances into a generally inaccessible system illustrate the utility of these techniques for investigating CP-based biosynthetic pathways. PMID:24041368

  3. The Golden Strip of Correlated Top Quark, Gaugino, and Vectorlike Mass In No-Scale, No-Parameter {\\cal F}-SU(5)

    CERN Document Server

    Li, Tianjun; Nanopoulos, Dimitri V; Walker, Joel W

    2010-01-01

    We systematically establish the hyper-surface within the tan\\beta, top quark mass m_{t}, universal gaugino mass M_{1/2}, and vectorlike mass M_{V} parameter volume which is compatible with the application of the No-Scale Supergravity boundary conditions, particularly the vanishing of the Higgs bilinear soft term B_\\mu, near to the Planck mass at the point M_{\\cal{F}} of ultimate \\cal{F}-lipped SU(5) unification. M_{\\cal{F}} is elevated from the penultimate partial unification near the traditional GUT scale at a mass M_{32} by the inclusion of extra \\cal{F}-theory derived heavy vectorlike multiplets. We demonstrate that simultaneous adherence to all current experimental constraints, most importantly contributions to the muon anomalous magnetic moment (g-2)_\\mu, the branching ratio limit on (b \\rightarrow s\\gamma), and the 7-year WMAP relic density measurement, dramatically reduces the allowed solutions to a highly non-trivial "golden strip" with tan\\beta \\simeq 15, m_{t} = 173.0-174.4 GeV, M_{1/2} = 455-481 Ge...

  4. Impact of climate variability on terrestrial environment in Western Europe between 45 and 9 kyr cal. BP: vegetation dynamics recorded by the Bergsee Lake (Black Forest, Germany).

    Science.gov (United States)

    Duprat-Oualid, Fanny; Begeot, Carole; Rius, Damien; Millet, Laurent; Magny, Michel

    2016-04-01

    Between 9 and 45 kyr cal. BP, two great transitions lead the global climate system to evolve from the Last-Glacial period (115-14.7 kyr cal. BP), to two successive warmer periods, the Late-Glacial Interstadial (14.7-11.7 kyr cal. BP) and the Holocene (11.7-0 kyr cal. BP). δ18O variations recorded in Greenland ice cores (GRIP & NGRIP) revealed high frequency climate variability within the Last Glacial. These reference isotopic records highlighted a succession of centennial-to-millennial warm/cold events, the so-called Greenland Interstadials (GI) and Greenland Stadials (GS). The number continental records about the period 14.7-0 kyr cal. BP is substantial. This allowed to understand the vegetation dynamics in response to climate changes this period at the North-Atlantic scale. However, sequences covering the glacial period (beyond 20 kyr cal.BP) remain rare, because of hiatuses mostly due to local glaciers. Therefore, sedimentary continuous records of vegetation dynamics are still needed to better understand climate changes during the Last Glacial in Western Europe (Heiri et al. 2014). Here we present a new high-resolution pollen record from Lake Bergsee (47°34'20''N, 7°56'11''E, 382 m a.s.l). This lake is located south of Black Forest and north of the Alps, beyond the zone of glaciers maximal extension. Therefore it could have recorded the whole last climatic cycle, i.e. 120-0 kyr cal. BP. In 2013, a 29 m long core was extracted from the Bergsee. According to the depth-age model based on 14C AMS dating and the Laacher See Tephra (LST), the record spans continuously at least the last 45 kyrs. The first series of pollen analysis, focused on the 45-9 kyr cal. BP time window, allows us to reconstruct a precise, faithful and continuous vegetation history at the centennial scale. This high temporal resolution enabled to assess the response of vegetation to secular climate events (e.g. GI-4 = 200 yrs). First, our results show that vegetation responded to climate

  5. Influência da temperatura e da luz na germinação da semente de calêndula Influence of temperature and light on the germination of marigold seed

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    Jana Koefender

    2009-06-01

    Full Text Available O objetivo deste trabalho foi avaliar os efeitos da luz e da temperatura sobre a germinação das sementes e o comprimento e produção de massa seca das plântulas de calêndula (Calendula officinalis L.. As sementes foram colocadas para germinar a temperaturas constantes de 15; 20; 25; 30 e 35ºC, na presença e na ausência de luz. O delineamento experimental utilizado foi inteiramente casualizado com quatro repetições. Constatou-se que a percentagem de germinação das sementes é maior à temperatura de 20ºC, e que temperaturas de 30 e 35ºC são prejudiciais à germinação, e afetam significativamente o comprimento das plântulas e a sua produção de massa seca.The effects of light and temperature were evaluated on seed germination and on the length and dry matter of marigold seedlings (Calendula officinalis L.. The seeds were placed to germinate at constant temperatures of 15; 20; 25; 30 and 35ºC, in the presence and absence of light. The experimental design used was of complete randomized plots with four replications. The percentage of seed germination was higher at 20ºC, and temperatures of 30 and 35ºC were harmful to germination and affected significantly the length of seedlings and their dry matter production.

  6. The short form of the recombinant CAL-A-type lipase UM03410 from the smut fungus Ustilago maydis exhibits an inherent trans-fatty acid selectivity.

    Science.gov (United States)

    Brundiek, Henrike; Saß, Stefan; Evitt, Andrew; Kourist, Robert; Bornscheuer, Uwe T

    2012-04-01

    The Ustilago maydis lipase UM03410 belongs to the mostly unexplored Candida antarctica lipase (CAL-A) subfamily. The two lipases with [corrected] the highest identity are a lipase from Sporisorium reilianum and the prototypic CAL-A. In contrast to the other CAL-A-type lipases, this hypothetical U. maydis lipase is annotated to possess a prolonged N-terminus of unknown function. Here, we show for the first time the recombinant expression of two versions of lipase UM03410: the full-length form (lipUMf) and an Nterminally truncated form (lipUMs). For comparison to the prototype, the expression of recombinant CAL-A in E. coli was investigated. Although both forms of lipase UM03410 could be expressed functionally in E. coli, the N-terminally truncated form (lipUMs) demonstrated significantly higher activities towards p-nitrophenyl esters. The functional expression of the N-terminally truncated lipase was further optimized by the appropriate choice of the E. coli strain, lowering the cultivation temperature to 20 °C and enrichment of the cultivation medium with glucose. Primary characteristics of the recombinant lipase are its pH optimum in the range of 6.5-7.0 and its temperature optimum at 55 °C. As is typical for lipases, lipUM03410 shows preference for long chain fatty acid esters with myristic acid ester (C14:0 ester) being the most preferred one.More importantly, lipUMs exhibits an inherent preference for C18:1Δ9 trans and C18:1Δ11 trans-fatty acid esters similar to CAL-A. Therefore, the short form of this U. maydis lipase is the only other currently known lipase with a distinct trans-fatty acid selectivity.

  7. 天竺葵叶片愈伤组织诱导的研究%Different hormone ratio of geranium leaves the cal us induced effects

    Institute of Scientific and Technical Information of China (English)

    张玉园; 杜清叶

    2016-01-01

    试验采用盆栽天竺葵的叶片为外植体,以MS为基本培养基,研究用不同浓度的6-BA和24-D配比组合及叶片大小对愈伤组织诱导的影响。结果表明,适宜天竺葵叶片诱导愈伤组织的最佳培养基为:MS +0.5 mg/L 2.4-D +0.05 mg/L 6-BA,愈伤组织诱导率较高,高达93.3%;叶片大小为0.5cm×0.5cm,能较好的促进愈伤组织的诱导,且污染率较低。%Plant hormones to cal us induction, the effects of the current domestic and overseas scholars to become the focus of research, with the constant expansion of its study field and the deepening of the research methods, plant hormones in scientific research, crops planted, vegeta-bles, flowers in the field of cultivation, used more widely. In the study, the potted geranium leaves for explant, MS with as the basic culture medium, with different concentration of cytokinins (6-BA) and 2 4-D the cal us induction study. The results show that:to 0.5 mg/L of 2 4-D and 0.05 mg/L of 6-BA of combination of auxin geranium blade cal us induction effect is best, cal us induction rate is higher, as high as 93.3﹪, namely the appropriate geranium blade cal us induction organization for the best medium:MS+2 4-D0.5 mg/L+6-BA0.05 mg/L.

  8. Spatially resolving methane emissions in California: constraints from the CalNex aircraft campaign and from present (GOSAT, TES and future (TROPOMI, geostationary satellite observations

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    K. J. Wecht

    2014-02-01

    Full Text Available We apply a continental-scale inverse modeling system for North America based on the GEOS-Chem model to optimize California methane emissions at 1/2° × 2/3° horizontal resolution using atmospheric observations from the CalNex aircraft campaign (May–June 2010 and from satellites. Inversion of the CalNex data yields a best estimate for total California methane emissions of 2.86 ± 0.21 Tg yr−1, compared with 1.92 Tg yr−1 in the EDGAR v4.2 emission inventory used as a priori and 1.51 Tg yr−1 in the California Air Resources Board (CARB inventory used for state regulations of greenhouse gas emissions. These results are consistent with a previous Lagrangian inversion of the CalNex data. Our inversion provides 12 independent pieces of information to constrain the geographical distribution of emissions within California. Attribution to individual source types indicates dominant contributions to emissions from landfills/wastewater (1.1 Tg yr−1, livestock (0.87 Tg yr−1, and gas/oil (0.64 Tg yr−1. EDGAR v4.2 underestimates emissions from livestock while CARB underestimates emissions from landfills/wastewater and gas/oil. Current satellite observations from GOSAT can constrain methane emissions in the Los Angeles Basin but are too sparse to constrain emissions quantitatively elsewhere in California (they can still be qualitatively useful to diagnose inventory biases. Los Angeles Basin emissions derived from CalNex and GOSAT inversions are 0.42 ± 0.08 and 0.31 ± 0.08, respectively. An observation system simulation experiment (OSSE shows that the future TROPOMI satellite instrument (2015 launch will be able to constrain California methane emissions at a detail comparable to the CalNex aircraft campaign. Geostationary satellite observations offer even greater potential for constraining methane emissions in the future.

  9. The late Holocene dry period: multiproxy evidence for an extended drought between 2800 and 1850 cal yr BP across the central Great Basin, USA

    Science.gov (United States)

    Mensing, Scott A.; Sharpe, Saxon E.; Tunno, Irene; Sada, Don W.; Thomas, Jim M.; Starratt, Scott W.; Smith, Jeremy

    2013-01-01

    Evidence of a multi-centennial scale dry period between ∼2800 and 1850 cal yr BP is documented by pollen, mollusks, diatoms, and sediment in spring sediments from Stonehouse Meadow in Spring Valley, eastern central Nevada, U.S. We refer to this period as the Late Holocene Dry Period. Based on sediment recovered, Stonehouse Meadow was either absent or severely restricted in size at ∼8000 cal yr BP. Beginning ∼7500 cal yr BP, the meadow became established and persisted to ∼3000 cal yr BP when it began to dry. Comparison of the timing of this late Holocene drought record to multiple records extending from the eastern Sierra Nevada across the central Great Basin to the Great Salt Lake support the interpretation that this dry period was regional. The beginning and ending dates vary among sites, but all sites record multiple centuries of dry climate between 2500 and 1900 cal yr BP. This duration makes it the longest persistent dry period within the late Holocene. In contrast, sites in the northern Great Basin record either no clear evidence of drought, or have wetter than average climate during this period, suggesting that the northern boundary between wet and dry climates may have been between about 40° and 42° N latitude. This dry in the southwest and wet in the northwest precipitation pattern across the Great Basin is supported by large-scale spatial climate pattern hypotheses involving ENSO, PDO, AMO, and the position of the Aleutian Low and North Pacific High, particularly during winter.

  10. CalWater Field Studies Designed to Quantify the Roles of Atmospheric Rivers and Aerosols in Modulating U.S. West Coast Precipitation in a Changing Climate

    Energy Technology Data Exchange (ETDEWEB)

    Ralph, F. M.; Prather, Kimberly A.; Cayan, Dan; Spackman, J. R.; DeMott, Paul J.; Dettinger, M.; Fairall, C.; Leung, Lai-Yung R.; Rosenfeld, Daniel; Rutledge, Steven A.; Waliser, D.; White, A. B.; Cordeira, J.; Martin, A.; Helly, J.; Intrieri, J.

    2016-08-22

    The variability of precipitation and water supply along the U.S. West Coast creates major challenges to the region’s economy and environment, as evidenced by the recent California drought. This variability is strongly influenced by atmospheric rivers (AR), which deliver much of the precipitation along the U.S. West Coast and can cause flooding, and by aerosols (from local sources and transported from remote continents and oceans) that modulate clouds and precipitation. A better understanding of these processes is needed to reduce uncertainties in weather predictions and climate projections of droughts and floods, both now and under changing climate conditions.To address these gaps a group of meteorologists, hydrologists, climate scientists, atmospheric chemists, and oceanographers have created an interdisciplinary research effort, with support from multiple agencies. From 2009-2011 a series of field campaigns (CalWater 1) collected atmospheric chemistry, cloud microphysics and meteorological measurements in California and associated modeling and diagnostic studies were carried out. Based on remaining gaps, a vision was developed to extend these studies offshore over the Eastern North Pacific and to enhance land based measurements from 2014-2018 (CalWater 2). The data set and selected results from CalWater 1 are summarized here. The goals of CalWater-2, and measurements to date, are then described. CalWater is producing new findings and exploring new technologies to evaluate and improve global climate models and their regional performance and to develop tools supporting water and hydropower management. These advances also have potential to enhance hazard mitigation by improving near-term weather prediction and subseasonal and seasonal outlooks.

  11. Inovações tecnológicas e organizacionais: práticas e representações de trabalhadores na indústria calçadista do Vale dos Sinos (RS

    Directory of Open Access Journals (Sweden)

    Tania Steren dos Santos

    2011-08-01

    Full Text Available Nesta pesquisa analisam-se as inovações incorporadas na base técnica e nas relações de trabalho na indústria calçadista do Vale dos Sinos (RS, considerando as práticas e representações dos trabalhadores sobre as mudanças em curso. Ao comparar estratégias tayloristas-fordistas e toyotistas nas indústrias do setor, observam-se formas mistas, pois concomitante à inclusão de novas tecnologias permanecem modalidades de trabalho tradicionais, principalmente nas pequenas e microempresas. O ritmo de trabalho tende a ser mais acelerado em grupo, mas as tarefas são consideradas menos monótonas e cansativas do que na esteira individual. Estão ocorrendo mudanças no papel das chefias, com relações de trabalho mais democráticas e dialógicas, embora as estratégias empresariais sejam direcionadas, basicamente, à geração de novas estruturas de disciplinamento da força de trabalho. A vigilância ocorre de forma indireta e é internalizada pelos trabalhadores. Os dados sobre o cotidiano fabril evidenciam relações dicotômicas de cooperação e conflito, que determinam as preferências e posturas dos trabalhadores relativas à questão da satisfação no emprego e à sua inserção no processo de trabalho. Abstract This research analyzes the innovations incorporated in the technical basis and in labor relations in the shoe industry in Vale dos Sinos (RS, considering the practices and attitudes of workers about the changes underway. When comparing strategies taylorist-fordist and toyotist in the industries sector, there are mixed forms, as concomitant to the inclusion of new technologies remain traditional working arrangements, particularly in small and micro enterprises. The pace of work tends to be faster in group work, but is considered less monotonous and tiring than the work on the mat alone. Changes are occurring in the role of managers, with labor relations more democratic and dialogical, but business strategies are directed

  12. DISERTACIÓN SOBRE JUSTICIA Y EQUIDAD

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    Sayuri P. Tamura M.

    2001-01-01

    Full Text Available «Disertación sobre equidad y justicia» es básicamente una respuesta a una inquietud en particular que yo tenía sobre las distintas posiciones que existen sobre estos dos temas y cómo definir cuál es la más acertada. Hice una descripción del punto de vista de Amartya Sen –la violación de los derechos sobre la propiedad privada es justificable si evitan las hambrunas2– frente al de Robert Nozick –la propiedad privada es un derecho fundamental y como tal debe ser respetado3–, sin embargo, aunque ambos enfoques son totalmente contrarios tienen mucho sentido, por lo cual es bastante difícil decidirse por uno en particular. Fue de esta forma, enfrentando sus opiniones, que yo logré desarrollar una posición frente a estas dos perspectivas, y así dar mi opinión al DISERTACIÓN SOBRE JUSTICIA Y EQUIDAD SAYURI P. TAMURA M. Estudiante de Economía y Negocios Internacionales de la Universidad ICESI. respecto. Al final, llegué a una conclusión, que aunque no es la más original y tampoco es la única, tiene mucho sentido y seguramente de ser posible, la situación del país podría cambiar para bien.

  13. Direct Measurement of Cloud Condensation Nuclei Chemistry using a New Microfluidic Instrument During the CalWater 2011 Campaign

    Science.gov (United States)

    Noblitt, S. D.; Roberts, G. C.; Corrigan, C.; Creamean, J.; Collins, D. B.; Cahill, J. F.; Prather, K. A.; Collett, J. L.; Henry, C.

    2011-12-01

    The CalWater 2011 campaign took place in the California Sierra Nevada with the objective of determining the effects atmospheric rivers and aerosols have on California precipitation. To meet this goal, the role of chemistry on atmospheric aerosols' ability to act as cloud condensation nuclei (CCN) needed to be evaluated because not all aerosols are CCN active. To date, direct measurement of ambient CCN chemistry has been difficult or unobtainable because of the difficulty in obtaining a well-defined CCN population, small aerosol masses, and low measurement flow rates. To address this need, a miniature CCN collector was employed that directly deposits CCN-active aerosol into an aqueous sample solution in a microfluidic device. Microchip electrophoresis (MCE) then performs chemical analysis on the soluble CCN components, and concentrations of water-soluble inorganic anions were obtained. Additional instruments were run alongside the CCN-MCE system to obtain a more complete characterization of the aerosol, including MCE coupled to a collector for all water condensation nuclei (WCN), two aerosol time-of-flight mass spectrometers (ATOFMS), optical CCN counters, condensation particle counters, and aerosol sizing instrumentation. The work discussed here will describe the operation of the CCN-MCE instrument and show the preliminary results obtained for CCN chemistry measurements at the Sugar Pine Reservoir during CalWater 2011. The prototype CCN-MCE analyzer permits online monitoring at a single, constant supersaturation. The outlet stream of the CCN system inertially impacts wetted CCN particles into a buffer-filled sample reservoir for immediate electrophoretic analysis, requiring CCN-MCE system collects aerosols at ~0.05 lpm and deposits them into ~20 μL of solution, providing detection limits of ~0.1 μg per cubic meter with 10 min of sampling. Because of the low (mostly rural) aerosol concentrations monitored at the Sugar Pine Reservoir, a poorer time resolution of ~1

  14. O estudo da prova calórica em pacientes idoso The study of caloric testing in senior patients

    Directory of Open Access Journals (Sweden)

    Débora Cristina de Oliveira Bezerra

    2008-01-01

    Full Text Available OBJETIVO: realizar o estudo da prova calórica em pacientes idosos com queixa de tontura, acompanhada ou não de zumbido com finalidade de traçar um perfil dos idosos quanto os sintomas vestibulares. MÉTODOS: fizeram parte da amostra 143 pacientes, com faixa etária variando de 60 a 90 anos de idade; todos realizaram o exame otoneurológico. Foram excluídos pacientes idosos com queixa de desequilíbrio e aqueles que apresentaram a queixa de zumbido desacompanhado da tontura. RESULTADOS: o estudo demonstrou que a normorreflexia, em valores absolutos, encontra-se entre 82,3% a 91,2% e os valores relativos são de 93%. Referente aos dados colhidos na anamnese, o que chamou a atenção, foi que do total de pacientes analisados, encontrou-se a tontura acompanhada de zumbido em 69% dos casos e o elevado uso de medicação em pacientes nesta faixa etária. CONCLUSÃO: na população estudada houve um predomínio da tontura acompanhada de zumbido. Em relação à prova calórica, o trabalho demonstrou a alta prevalência de pacientes com valores absolutos e relativos normais.PURPOSE: to accomplish the study of caloric testing in senior patients with dizziness, accompanied or not of with buzzing. METHODS: 143 patients were analyzed with age varying from 60 to 90 years; all of them did an otoneurologic evaluation. Senior patients with unbalance complaints and with buzzing unaccompanied with dizziness were excluded from this study. RESULTS: 82.3% to 91.2% of the patients obtained normoreflexia in absolute values and over 93% obtained normal results in relative values. Referring to the data obtained in the anamnesis, what got attention was 69% of dizziness accompanied with buzzing. And the high medication of the patients in this age group. CONCLUSION: there was a prevalence of dizziness accompanied with buzzing in the studied population. Concerning the caloric testing, the study demonstrated the high prevalence of patients with normal absolute and

  15. Real-time environmental monitoring system: drilling campaign BM-CAL-4 Block, Camanu-Almada Basin, Bahia, Brazil; Sistema de monitoramento ambiental em tempo-real: Bloco BM-CAL-4, Bacia de Camamu-Almada, Bahia, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Pedro [El Paso Oleo e Gas, Natal, RN (Brazil); Cabral, Alexandre P. [Fugro OceansatPeg (Brazil)

    2008-07-01

    Between February and November 2007, the El Paso Oleo e Gas do Brasil Ltda. carried out a second exploratory campaign at the BM-CAL-4 Block (Camamu-Almada Basin), installing a real-time transmission metocean data monitoring system. Two metocean Wavescan (WS) buoys from Fugro were installed, transmitting current, wave and wind data to the El Paso crises room. The WS1 was positioned near the oil (10,5 km from the shore, at 22m depth), and the WS2 was located near the entrance of Barra Grande area (4,w km from the coast, at 10m depth). The real rime data fed the mathematical simulation using an oil spill model from Fugro Oceansatpeg. The metocean data Real-Time Environmental Monitoring System proved to be an important tool in the environmental management of the drilling activity located near the coastline. The sampling and real-time transmission of the current, wind and wave data allowed a better decision making regarding the selection of the best response strategies, saving time and resources in the simulation exercises, a vital issue in case of a real oil spill accident. (author)

  16. Rastros: dizendo sobre os fazeres/dizeres

    OpenAIRE

    MELLO MARISOL BARENCO CORRÊA DE

    2001-01-01

    Com vistas ao aclaramento de noções erroneamente herdadas do contexto social e histórico da cultura moderna ocidental, que teve/tem como um de seus projetos o "apagamento" do sujeito, ou o distanciamento entre os sujeitos e suas formas de fazer, dizer, pensar, este artigo pretende contribuir com elementos para a construção de um outro paradigma nas ciências humanas. Trata-se de um relato sobre o processo de construção de nossa própria pesquisa, articulado à reflexão sobre as diversas formas d...

  17. Sobre la esclavitud: libro de artista

    OpenAIRE

    MACHADO JIMÉNEZ, ALBERTO

    2015-01-01

    Sobre la esclavitud es un libro de artista, donde encontraremos imágenes acompañadas de breves frases que hacen referencia al tema propuesto en cada ilustración para que así se pueda comprender mejor la intención de este trabajo, reflexionar sobre la manera que tenemos de ver las cosas, en este caso, con respecto a la esclavitud. Dar a conocer distintas formas de ser esclavo en este sistema sería uno de los objetivos principales. Hacer litografías, dibujos con el uso de acua...

  18. Large $N$ matrix models for 3d ${\\cal N}=2$ theories: twisted index, free energy and black holes

    CERN Document Server

    Hosseini, Seyed Morteza

    2016-01-01

    We provide general formulae for the topologically twisted index of a general three-dimensional ${\\cal N}\\geq 2$ gauge theory with an M-theory or massive type IIA dual in the large $N$ limit. The index is defined as the supersymmetric path integral of the theory on $S^2\\times S^1$ in the presence of background magnetic fluxes for the R- and global symmetries and it is conjectured to reproduce the entropy of magnetically charged static BPS AdS$_4$ black holes. For a class of theories with an M-theory dual, we show that the logarithm of the index scales indeed as $N^{3/2}$ (and $N^{5/3}$ in the massive type IIA case). We find an intriguing relation with the (apparently unrelated) large $N$ limit of the partition function on $S^3$. We also provide a universal formula for extracting the index from the large $N$ partition function on $S^3$ and its derivatives and point out its analogy with the attractor mechanism for AdS black holes.

  19. Synergistic Stimulation with Different TLR7 Ligands Modulates Gene Expression Patterns in the Human Plasmacytoid Dendritic Cell Line CAL-1

    Science.gov (United States)

    Hilbert, Tobias; Steinhagen, Folkert; Weisheit, Christina; Baumgarten, Georg; Hoeft, Andreas; Klaschik, Sven

    2015-01-01

    Objective. TLR7 ligation in plasmacytoid dendritic cells is promising for the treatment of cancer, allergy, and infectious diseases; however, high doses of ligands are required. We hypothesized that the combination of structurally different TLR7 ligands exponentiates the resulting immune response. Methods. CAL-1 (human pDC line) cells were incubated with the TLR7-specific adenine analog CL264 and single-stranded 9.2s RNA. Protein secretion was measured by ELISA. Microarray technique was used to detect modified gene expression patterns upon synergistic stimulation, revealing underlying functional groups and networks. Cell surface binding properties were studied using FACS analysis. Results. CL264 in combination with 9.2s RNA significantly enhanced cytokine and interferon secretion to supra-additive levels. This effect was due to a stronger stimulation of already regulated genes (by monostimulation) as well as to recruitment of thus far unregulated genes. Top scoring canonical pathways referred to immune-related processes. Network analysis revealed IL-1β, IL-6, TNF, and IFN-β as major regulatory nodes, while several minor regulatory nodes were also identified. Binding of CL264 to the cell surface was enhanced by 9.2s RNA. Conclusion. Structurally different TLR7 ligands act synergistically on gene expression patterns and on the resulting inflammatory response. These data could impact future strategies optimizing TLR7-targeted drug design. PMID:26770023

  20. Observations of Convective Development from Repeat Pass Radiometry during CalWaters 2015: Outlook for the TEMPEST Mission

    Science.gov (United States)

    Brown, S. T.

    2015-12-01

    The Temporal Experiment for Storms and Tropical Systems (TEMPEST), which was recently selected as a NASA Earth Ventures technology demonstration mission, uses a constellation of five CubeSats flying in formation to provide observations of developing precipitation with a temporal resolution of 5 minutes. The observations are made using small mm-wave radiometers with frequencies ranging from 90 to 183 GHz which are sensitive to the integrated ice water path above the precipitation layer in the storm. This paper describes TEMPEST like observations that were made with the High Altitude MMIC Sounding Radiometer (HAMSR) on the ER-2 during CalWaters 2015. HAMSR is a mm-wave airborne radiometer with 25 channels in three bands; 50, 118 and 183 GHz. During the campaign, a small isolated area of convection was identified by the ER-2 pilot and 5 overpasses of the area were made with about 5 minutes between each pass. The HAMSR data reveal two convective cells, one which was diminishing and one which was developing. The mm-wave channels near the 183 GHz water vapor line clearly show the change in the vertical extent of the storm with time, a proxy for vertical velocity. These data demonstrate the potential for TEMPEST like observations from an orbital vantage point. This paper will provide an overview of the measurements, an analysis of the observations and offer perspectives for the TEMPEST mission.

  1. Extending MAM5 Meta-Model and JaCalIV E Framework to Integrate Smart Devices from Real Environments.

    Directory of Open Access Journals (Sweden)

    J A Rincon

    Full Text Available This paper presents the extension of a meta-model (MAM5 and a framework based on the model (JaCalIVE for developing intelligent virtual environments. The goal of this extension is to develop augmented mirror worlds that represent a real and virtual world coupled, so that the virtual world not only reflects the real one, but also complements it. A new component called a smart resource artifact, that enables modelling and developing devices to access the real physical world, and a human in the loop agent to place a human in the system have been included in the meta-model and framework. The proposed extension of MAM5 has been tested by simulating a light control system where agents can access both virtual and real sensor/actuators through the smart resources developed. The results show that the use of real environment interactive elements (smart resource artifacts in agent-based simulations allows to minimize the error between simulated and real system.

  2. Extending MAM5 Meta-Model and JaCalIV E Framework to Integrate Smart Devices from Real Environments.

    Science.gov (United States)

    Rincon, J A; Poza-Lujan, Jose-Luis; Julian, V; Posadas-Yagüe, Juan-Luis; Carrascosa, C

    2016-01-01

    This paper presents the extension of a meta-model (MAM5) and a framework based on the model (JaCalIVE) for developing intelligent virtual environments. The goal of this extension is to develop augmented mirror worlds that represent a real and virtual world coupled, so that the virtual world not only reflects the real one, but also complements it. A new component called a smart resource artifact, that enables modelling and developing devices to access the real physical world, and a human in the loop agent to place a human in the system have been included in the meta-model and framework. The proposed extension of MAM5 has been tested by simulating a light control system where agents can access both virtual and real sensor/actuators through the smart resources developed. The results show that the use of real environment interactive elements (smart resource artifacts) in agent-based simulations allows to minimize the error between simulated and real system. PMID:26926691

  3. New Particle Formation and Growth in CMAQ: Application of Comprehensive Modal Methods to Observations during CalNex 2010

    Science.gov (United States)

    Murphy, B.

    2015-12-01

    Secondary formation and subsequent growth of ultrafine atmospheric particles is an important source of larger particles that can activate clouds and affect their microphysical properties. It is likewise important for models attempting to quantify cloud-aerosol feedbacks to realistically account for this pervasive pathway. Representing these phenomena accurately in models requires in-depth knowledge of the chemical interactions that lead to new particle formation as well as the availability of condensable species to sustain a growth event. Further, models must represent the numerical aspects of particle growth reasonably well in order to preserve the essential characteristics of the aerosol size distribution (e.g. unimodal vs. bimodal, peak diameter, etc). Such characteristics are critical for calculating the number of particles participating as nuclei for liquid and solid hydrometeors. We implement into the Community Multi-scale Air Quality (CMAQ) model a new aerosol processing module designed for robust prediction of particle number concentrations, sources and sinks. The new module leverages the speed and flexibility of modal aerosol techniques with state-of-the-art, schemes for treating new particle formation, coagulation, and intermodal transference. Moreover, we incorporate an updated treatment of organic aerosol (OA) formation and explore the sensitivity of growth rates predicted by the CMAQ model to the uncertain OA formation parameters. We apply the new model to observations made during the CalNex 2010 campaign and evaluate model performance against observed number concentrations, time-dependent growth rates, and size distributions.

  4. Skill Test of the West-WRF and GFS Models Verified Using CalWater Dropsonde Observations

    Science.gov (United States)

    Demirdjian, R.; Martin, A.; Ralph, F. M.; Iacobellis, S.

    2015-12-01

    Atmospheric rivers (AR) play a crucial role in the horizontal transport of water vapor and moist static energy in the midlatitudes and in delivering water to a variety of continental climate zones. In California, up to 60% of the annual precipitation depends on the arrival of a small number of AR. Despite their importance, state-of-the art atmospheric circulation models are consistently poor in predicting AR location and timing. We will demonstrate that model predictions also contain large errors in the magnitude of AR horizontal vapor transport. In this study we aim to compare the prediction skill in horizontal water vapor transport from a modified version of the Weather Research and Forecast (West-WRF) and the Global Forecast System (GFS) models. We verify model skill using dropsonde observations taken from the CalWater 2014 - 2015 field campaigns and a ground-based network of co-located wind profiling radar and GPS receivers. We compare each model across a large number of lead times ranging from 12 hours to 8 days. Our preliminary results suggest that the Integrated Vapor Transport (IVT) and total vapor flux are more accurately predicted by the higher resolution West-WRF model. Furthermore, we find that GFS typically has a consistent 2-6 hour lag in the timing of peak water vapor flux compared to the West-WRF model. Physical explanations of the more accurate West-WRF horizontal vapor transport and the apparent delay in peak vapor flux timing are also examined.

  5. A Self-Regulated Learning Approach: A Mobile Context-aware and Adaptive Learning Schedule (mCALS Tool

    Directory of Open Access Journals (Sweden)

    J.Y-K. Yau

    2008-07-01

    Full Text Available Abstract—Self-regulated students are able to create andmaximize opportunities they have for studying or learning.We combine this learning approach with our MobileContext-aware and Adaptive Learning Schedule (mCALStool which will create and enhance opportunities forstudents to study or learn in different locations. Thelearning schedule is used for two purposes, a to helpstudents organize their work and facilitate timemanagement, and b for capturing the users’ activitieswhich can be retrieved and translated as learning contextslater by our tool. These contexts are then used as a basis forselecting appropriate learning materials for the students.Using a learning schedule to capture and retrieve contexts isa novel approach in the context-aware mobile learning field.In this paper, we present the conceptual model andpreliminary architecture of our mCALS tool, as well as ourresearch questions and methodology for evaluating it. Thelearning materials we intend to use for our tool will be Javafor novice programmers. This is appropriate because largeamounts of time and motivation are necessary to learn anobject-oriented programming language such as Java, andwe are currently seeking ways to facilitate this for noviceprogrammers.

  6. Algebra of the Infrared: String Field Theoretic Structures in Massive ${\\cal N}=(2,2)$ Field Theory In Two Dimensions

    CERN Document Server

    Gaiotto, Davide; Witten, Edward

    2015-01-01

    We introduce a "web-based formalism" for describing the category of half-supersymmetric boundary conditions in $1+1$ dimensional massive field theories with ${\\cal N}=(2,2)$ supersymmetry and unbroken $U(1)_R$ symmetry. We show that the category can be completely constructed from data available in the far infrared, namely, the vacua, the central charges of soliton sectors, and the spaces of soliton states on $\\mathbb{R}$, together with certain "interaction and boundary emission amplitudes". These amplitudes are shown to satisfy a system of algebraic constraints related to the theory of $A_\\infty$ and $L_\\infty$ algebras. The web-based formalism also gives a method of finding the BPS states for the theory on a half-line and on an interval. We investigate half-supersymmetric interfaces between theories and show that they have, in a certain sense, an associative "operator product." We derive a categorification of wall-crossing formulae. The example of Landau-Ginzburg theories is described in depth drawing on ide...

  7. Seeking the Loop Quantum Gravity Barbero-Immirzi Parameter and Field in 4D, $\\cal N$ = 1 Supergravity

    CERN Document Server

    Gates, S James; Yunes, Nicolas

    2009-01-01

    We embed the Loop Quantum Gravity Barbero-Immirzi parameter and field within an action describing 4D, $\\cal N$ = 1 supergravity and thus within a Low Energy Effective Action of Superstring/M-Theory. We use the fully gauge-covariant description of supergravity in (curved) superspace. The gravitational constant is replaced with the vacuum expectation value of a scalar field, which in local supersymmetry is promoted to a complex, covariantly chiral scalar superfield. The imaginary part of this superfield couples to a supersymmetric Holst term. The Holst term also serves as a starting point in the Loop Quantum Gravity action. This suggest the possibility of a relation between Loop Quantum Gravity and supersymmetric string theory, where the Barbero-Immirzi parameter and field of the former play the role of the supersymmetric axion in the latter. Adding matter fermions in Loop Quantum Gravity may require the extension of the Holst action through the Nieh-Yan topological invariant, while in pure, matter-free supergr...

  8. Molecular characterization of organic aerosol using nanospray desorption/electrospray ionization mass spectrometry: CalNex 2010 field study

    Science.gov (United States)

    O'Brien, Rachel E.; Laskin, Alexander; Laskin, Julia; Liu, Shang; Weber, Robin; Russell, Lynn M.; Goldstein, Allen H.

    2013-04-01

    Aerosol samples from the CalNex 2010 field study were analyzed using high-resolution mass spectrometry (HR-MS) coupled to a nanospray desorption/electrospray ionization (nano-DESI) source. The samples were collected in Bakersfield, CA on June 22-23, 2010. The chemical formulas of over 850 unique molecular species were detected in the mass range of 50-400 m/z using positive mode ESI of aerosol samples in the 0.18-0.32 μm size range. Our analysis focused on identification of two main groups: compounds containing only carbon, hydrogen, and oxygen (CHO), and nitrogen-containing organic compounds (NOC). The NOC accounted for 40% (by number) of the compounds observed in the afternoon, and for 52% in the early morning samples. By comparing plausible reactant-product pairs, we propose that over 50% of the NOC in each sample could have been formed through reactions transforming carbonyls into imines. The CHO only compounds were dominant in the afternoon suggesting a photochemical source. The average O/C ratios of all observed compounds were fairly consistent throughout the day, ranging from 0.33 in the morning to 0.37 at night. We conclude that both photooxidation and ammonia chemistry may play a role in forming the compounds observed in this mixed urban-rural environment.

  9. Molecular Characterization of Organic Aerosol Using Nanospray Desorption/Electrospray Ionization Mass Spectrometry: CalNex 2010 field study

    Energy Technology Data Exchange (ETDEWEB)

    O' Brien, Rachel E.; Laskin, Alexander; Laskin, Julia; Liu, Shang; Weber, Robin; Russell, Lynn; Goldstein, Allen H.

    2013-04-01

    Aerosol samples from the CalNex 2010 field study were analyzed using high resolution mass spectrometry (HR-MS) coupled to a nanospray-desorption/electrospray ionization (nano-DESI) source. The samples were collected in Bakersfield, CA on June 22-23, 2010. The chemical formulas of over 1300 unique molecular species were detected in the mass range of 50-800 m/z. Our analysis focused on identification of two main groups: compounds containing only carbon, hydrogen, and oxygen (CHO only), and nitrogen-containing organic compounds (NOC). The NOC accounted for 35% (by number) of the compounds observed in the afternoon, and for 59% in the early morning samples. By comparing plausible reactant-product pairs, we propose that over 50% of the NOC in each sample could have been formed through reactions transforming carbonyls into imines. The CHO only compounds were dominant in the afternoon suggesting a photochemical source. The average O:C ratios of all observed compounds were fairly consistent throughout the day, ranging from 0.34 in the early morning to 0.37 at night. We conclude that both photooxidation and ammonia chemistry play important roles in forming the compounds observed in this mixed urban-rural environment.

  10. Consideraciones sobre diferentes procesos productivos y sus consecuencias sobre el medio ambiente

    OpenAIRE

    Caridad Ramos Alvariño

    2004-01-01

    En el presente trabajo se exponen algunas consideraciones sobre diferentes procesos productivos y sus consecuencias sobre el medio ambiente. La disminución del impacto negativo de algunas producciones sobre el medio ambiente es favorable, pero el problema va más allá y de lo que se trata es de la necesidad de una transformación sostenible de las producciones que puedan conducir a una vida agradable y una naturaleza conservada entre otras muchas cuestiones que agobian hoy al mundo. La solución...

  11. El catalanismo en la hora del imperialismo. Un estudio excepcional sobre la proyección hispánica del nacionalismo "lligaire"

    Directory of Open Access Journals (Sweden)

    Eduardo GONZÁLEZ CALLEJA

    2010-02-01

    Full Text Available RESUMEN: Una breve referencia al debate suscitado desde hace veinticinco años sobre las pretendidas limitaciones de la historiografía catalana en su estudio del hecho nacional autóctono y sus relaciones con el Estado español sirve de introducción a la crítica de la última obra de Enric Ucelay-Da Cal, que trata de ser analizada a la luz de los conceptos, tomados de la nueva historia cultural, que pretenden vertebrar su trabajo: la metáfora, el juego y el mito, que han ido articulando y definiendo el concepto clave de imperio, cuyas diversas lecturas culturales y políticas en la escena internacional y peninsular constituyen la parte central de su ensayo. ABSTRACT: After a short review of the debate carried out in the last twentyfive years over the supposed limitations of the current historiography in the study of the Catalan nationalism and his relationship with the Spanish state, this article try to analyse the last work of Enric Ucelay-Da Cal. To fulfil it, we will use some con- cepts borrowed from the new cultural history, like metaphor, game and myth, and evaluate the way that they have created and defined the key concept of empire, whose different cultural and political interpretations in the international and peninsular scenes are the main subject of Ucelay’s essay.

  12. Pesquisa em gestão da produção na indústria de calçados: revisão, classificação e análise Research on production management in the footwear industry: review, classification, and analysis

    Directory of Open Access Journals (Sweden)

    Moacir Godinho Filho

    2009-06-01

    Full Text Available Este trabalho apresenta uma revisão bibliográfica que pretende ser completa (209 trabalhos sobre Gestão da Produção na indústria calçadista a partir do ano 1980, revisão esta não encontrada até agora na literatura de Gestão da Produção. A partir de tal revisão propôs-se um sistema de classificação baseado em 5 categorias: origem do trabalho; grande área da Engenharia de Produção focada no trabalho; subárea da Engenharia de Produção focada no trabalho; procedimento de pesquisa utilizado; e fonte do trabalho, que serviu para classificar e estruturar os artigos da revisão. Uma vez classificada e estruturada, a revisão bibliográfica sobre Gestão da Produção na indústria calçadista serviu de base para uma ampla análise do tema. Essa análise se baseou em dois pontos fundamentais: i um estudo quantitativo das grandes áreas da Engenharia de Produção focadas nos trabalhos, assim como da origem, fonte e procedimentos de pesquisa utilizados nos trabalhos; e ii um estudo qualitativo dos principais assuntos e objetivos alcançados por esses trabalhos. As principais contribuições deste trabalho são: servir de base para um maior conhecimento da literatura atualmente sobre Gestão da Produção na indústria de calçados e propor sugestões de pesquisas futuras na área.This paper presents a literature review that intends to be complete including 209 papers on Production Management on footwear industry since 1980. Such a review has not yet been available on the Production Management literature. This review was organized by means of a classification encompassing 5 dimensions: paper origin, area of Production Engineering focused in the paper, sub area of Production Engineering focused, research procedure used, and the paper source. Once classified and organized, the literature review about Production Management on footwear industry was the base of a broad theme analysis. This analysis was based on two basic points: i a

  13. Las fuentes cristianas sobre Jesús

    Directory of Open Access Journals (Sweden)

    Melero Martínez, J.M.

    2010-01-01

    Full Text Available El artículo es una presentación de las fuentes históricas sobre Jesús de Nazaret: fuentes sinópticas, fuente Q, fuentes afines a la gnosis, fragmentos de evangelio con material sinóptico o joánico, evangelios judeocristianos y otras fuentes.

  14. Sobre un sistema no lineal de epidemias

    OpenAIRE

    Ortega S., Luis

    2012-01-01

    Un modelo sobre epidemias que describe la población infectada y la población susceptible de ser infectada en el cual se toma en consideraci6n el efecto de difusión es el siguiente: [Formula Matemática].

  15. Puente pretensado sobre el Guadarrama. Villalba

    Directory of Open Access Journals (Sweden)

    Páez, A.

    1958-12-01

    Full Text Available En este artículo se describe y comenta la solución dada al puente de hormigón pretensado sobre el río Guadarrama, primero de los construidos mediante dovelas prefabricadas y solidarizadas después, mediante el pretensado de la armadura longitudinal.

  16. Sobre o natural e o actor

    OpenAIRE

    Tavares, Margarida

    2010-01-01

    Neste artigo, procura-se reflectir sobre o conceito de natural quando aplicado ao trabalho do actor. Parte-se de quatro relevantes textos da dramaturgia ocidental, a saber: Hamlet, de Shakespeare; Crítica da ‘Escola das mulheres’ e O improviso de Versalhes, de Molière; e O teatro cómico, de Goldoni.

  17. Past environmental and climatic changes during the last 7200 cal yrs BP in Adamawa Plateau (Northern-Cameroun based on fossil diatoms and sedimentary 13C isotopic records from Lake Mbalang

    Directory of Open Access Journals (Sweden)

    C. Martin

    2011-01-01

    Full Text Available Past limnological conditions of Lake Mbalang (7°19´ N, 13°44´ E, alt: 1130 m and vegetation type were reconstructed from diatoms and sedimentary stable carbon isotope records (δ13C since 7200 cal yrs BP. The data showed that before 3600 yrs cal BP the water column was preferentially cold and stable except around 5000–5300 cal yrs BP where diatom evidenced mixed upper water layer, δ13C data suggest more forested vegetation in the landscape. These stable conditions can be explained by a strong monsoonal flux and correlatively northern position of the ITCZ that entailed high/low rainfall well distributed over the year to allow the development mountainous forest taxa. The decreasing trend of the monsoonal flux towards mid-Holocene was however affected by several centennial to millennial time scale abrupt weakening at 6700, 5800–6000, 5000–5300, 4500 and 3600 cal yrs BP although their impact on vegetation is not visible probably because rainfall distribution was favourable to forest maintenance or extension. After 3600 cal yrs BP, water column became very mixed as a result of more intense NE trade winds (Harmattan that led at ~3000 cal yrs BP to the instalment of savana in the vegetation landscape. At that time, rainfall was probably reduced following the southwards shift of the ITCZ and the distribution of yearly rainfall was no more favourable to forest development. Thus a strong seasonality with a well marked dry season was established, conditions that maintained the savana vegetation till today. Diatom data suggest the lake did not dried during the last 7200 cal yrs BP, however, a low lake level observed at 2400–2100 cal yrs BP is contemporaneous to a climatic event evidenced in several areas of tropical Africa and could correspond to the southernmost position of the ITCZ. Other low lake levels are observed at 1800 and 1400 cal yrs BP, after which lake rose to its present level.

  18. Two-point correlation functions of spin operators in the minimal models ${\\cal M}_{p,p'}$ perturbed by the field $\\Phi_{13}$

    CERN Document Server

    Belavin, A A; Litvinov, A V; Pugai, Y P; Zamolodchikov, A B; Zamolodchikov, Al.B.

    2004-01-01

    Two-point correlation functions of spin operators in the minimal models ${{\\cal M}}_{p,p'}$ perturbed by the field $\\Phi_{13}$ are studied in the framework of conformal perturbation theory. The first-order corrections for the structure functions are derived analytically in terms of gamma functions. Together with the exact vacuum expectation values of local operators, this gives the short-distance expansion of the correlation functions. The long-distance behaviors of these correlation functions in the case ${{\\cal M}}_{2,2n+1}$ have been worked out using a form-factor bootstrap approach. The results of numerical calculations demonstrate that the short- and long-distance expansions match at the intermediate distances. Including the descendent operators in the OPE drastically improves the convergency region. The combination of the two methods thus describes the correlation functions at all length scales with good precision.

  19. Preparados estándar de nutrición parenteral y ajuste calórico Standard parenteral nutrition preparations and caloric adjustment

    Directory of Open Access Journals (Sweden)

    J. Llop

    2009-10-01

    Full Text Available Introducción: En nutrición parenteral es necesario adecuar el aporte a los requisitos calóricos estimados. Estas necesidades se podrían cubrir mediante preparados bi/tricamerales (NPE aunque presenten rigidez en su composición. Objetivo: Evaluar la adecuación del aporte calórico al utilizar NPE, determinar los factores que la condicionan y las complicaciones asociadas. Métodos: Estudio de cohortes, observacional y prospectivo durante nueve meses en pacientes quirúrgicos. Se compararon las necesidades calculadas con el aporte real. Se estudiaron que factores condicionaban el exceso y el déficit (peso, edad, factor de estrés, altura, glucemia y trigliceridemia mediante un modelo multivariante. Se estudiaron las complicaciones metabólicas (hiperglucemias, hipertrigliceridemias asociadas al exceso o al déficit mediante la t de Student. Se compararon los cálculos teóricos de la ecuación de Harris-Benedict y de Mifflin mediante una regresión lineal-correlación. Resultados: Se estudiaron 94 pacientes. En el 87% el aporte calórico estaba dentro del rango ± 15% de la media teórica. 30 pacientes estuvieron en exceso calórico y 61 en déficit. Los pacientes de peso elevado (> 68 kg, factor de estrés superior a 1,2 e hipertrigliceridemias (> 3 mmol/L tenían mayor riesgo de déficit calórico. El 22,8% presentaron hiperglucemias que se relacionaron con exceso calórico. El 19,8% presentaron hipertrigliceridemias que se asociaron con déficit calórico. En la comparación de las dos fórmulas los valores se correlacionaban excepto en pacientes con bajo peso y edad avanzada. Discusión: Aunque la NPE se adecua a los requisitos calóricos de la mayoría de los pacientes, en pacientes con elevado peso, hipercatabolismo e hipertrigliceridemia existe un riesgo de déficit.Introduction: In parenteral nutrition it is necessary to adjust the intake to the estimated caloric requirements. These needs may be achieved by the use of bi- or

  20. HypCal, a general-purpose computer program for the determination of standard reaction enthalpy and binding constant values by means of calorimetry.

    Science.gov (United States)

    Arena, Giuseppe; Gans, Peter; Sgarlata, Carmelo

    2016-09-01

    The program HypCal has been developed to provide a means for the simultaneous determination, from data obtained by isothermal titration calorimetry, of both standard enthalpy of reaction and binding constant values. The chemical system is defined in terms of species of given stoichiometry rather than in terms of binding models (e.g., independent or cooperative). The program does not impose any limits on the complexity of the chemical systems that can be treated, including competing ligand systems. Many titration curves may be treated simultaneously. HypCal can also be used as a simulation program when designing experiments. The use of the program is illustrated with data obtained with nicotinic acid (niacin, pyridine-3 carboxylic acid). Preliminary experiments were used to establish the rather different titration conditions for the two sets of titration curves that are needed to determine the parameters for protonation of the carboxylate and amine groups.