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.

Evaluation of electric properties of cement mortars containing pozzolans

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Cruz, J. M.

2011-03-01

Full Text Available In this paper the evolution of the microstructure of Portland cement mortar is analyzed, by using electrical impedance measurements. Cement mortars are compared without and with two pozzolanic substitutions: spent fluid catalytic cracking catalyst (FCC and metakaolin (MK. The measurement method is described and the model for analyzing the electrical impedance spectra is developed. Three electrical parameters are defined: electrical resistivity, capacitance exponent, and capacitive factor. The results show a significant increase in resistivity of the mortars with pozzolans after 7 days of curing, especially in mortars with MK. This increase is correlated with lime-fixing by the pozzolans. The capacitive properties evolve differently at early age, but reach the same values after 148 days. The electrical and mineralogical data show that the evolution of the microstructure in the mortar with MK starts before it does in the mortars with FCC and that the final microstructure becomes different.

En este trabajo se analiza la microestructura de morteros de cemento Portland, mediante medidas de impedancia eléctrica. Se comparan morteros de cemento sin y con dos sustituciones puzolánicas: residuo de catalizador de craqueo catalítico (FCC y metacaolín (MK. Se describe el método de medida y se desarrolla el modelo de análisis de los espectros de impedancia eléctrica. Se definen tres parámetros eléctricos: resistividad eléctrica, exponente capacitivo, y factor capacitivo. Se observa un aumento importante de la resistividad de los morteros con puzolana a partir de los 7 días de curado, sobre todo en morteros con MK. Este aumento está correlacionado con la fijación de cal de las puzolanas. Las propiedades capacitivas son diferentes a edad temprana, pero se igualan a los 148 días. Los resultados eléctricos y mineralógicos muestran que la evolución microestructural comienza antes en los morteros con MK que con FCC y que la microestructura

Efectos del ejercicio aeróbico interválico, combinado con entrenamiento de fuerza y de la restricción calórica, sobre la composición corporal de ratas obesas

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I. Coll-Risco

2017-03-01

Conclusiones: Tanto el programa de ejercicio aeróbico interválico, combinado con entrenamiento de fuerza desarrollado, como la restricción calórica, fueron eficaces, mejorando la composición corporal de ratas obesas, pero el ejercicio lo hizo en mayor magnitud.

IntCal04 terrestrial radiocarbon age calibration, 0-26 cal kyr BP

NARCIS (Netherlands)

Reimer, Paula J.; Baillie, Mike G.L.; Bard, Edouard; Bayliss, Alex; Beck, J. Warren; Bertrand, Chanda J.H.; Blackwell, Paul G.; Buck, Caitlin E.; Burr, George S.; Cutler, Kirsten B.; Damon, Paul E.; Edwards, R. Lawrence; Fairbanks, Richard G.; Friedrich, Michael; Guilderson, Thomas P.; Hogg, Alan G.; Hughen, Konrad A.; Kromer, Bernd; McCormac, Gerry; Manning, Sturt; Bronk Ramsey, Christopher; Reimer, Ron W.; Remmele, Sabine; Southon, John R.; Stuiver, Minze; Talamo, Sahra; Taylor, F.W.; Plicht, Johannes van der; Weyhenmeyer, Constanze E.

2004-01-01

A new calibration curve for the conversion of radiocarbon ages to calibrated (cal) ages has been constructed and internationally ratified to replace IntCal98, which extended from 0–24 cal kyr BP (Before Present, 0 cal BP = AD 1950). The new calibration data set for terrestrial samples extends from

RECICLAGEM DE REJEITOS DA CONSTRUÇÃO CIVIL PARA USO EM ARGAMASSAS DE BAIXO CUSTO

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Luciana Viana Amorim

1999-08-01

Full Text Available RESUMO Com o objetivo de se obter aglomerantes pozolânicos a partir da reciclagem de rejeitos da construção civil, foram estudadas duas amostras de entulho, uma de resíduo de cerâmica vermelha e uma pozolana artificial, e duas amostras de cal. As amostras foram caracterizadas através de análise química, análise térmica diferencial, difração de raios-X, área específica e determinação da atividade pozolânica. As amostras de entulho e resíduo cerâmico foram moídas em moinho de bolas por 90 min e a de pozolana artificial em moinho de discos. Foram preparadas argamassas alternativas, no traço 1:3 e, como aglomerante, cal pozolânica, em composições 30-70%, 40-60% e 50-50% de cal e pozolana. Os corpos de prova foram curados por períodos de 7, 28 e 60 dias e submetidos a ensaios de resistência a compressão simples, cujos resultados mostram que a reciclagem de rejeitos é promissora, podendo gerar elementos construtivos de baixo custo e que seu uso implica na preservação do meio ambiente e na melhoria da qualidade de vida da população em geral.

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

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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

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

OpenAIRE

Estrada, Enrique; Barbero, José Miguel

1986-01-01

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 finur...

Optimización y análisis del comportamiento de materiales tratados con cal en carreteras : aplicación a lodos de tuneladora y mezclas bituminosas

OpenAIRE

Movilla Quesada, Diana

2012-01-01

En esta tesis doctoral se presentan diversos estudios experimentales mediante los cuales se mejoran materiales utilizados en carreteras, tanto en terraplenes como firmes, añadiendo diferentes filleres. Esta tesis está constituida por una compilación de artículos centrados en una misma línea de investigación: Tratamiento de materiales con cal, como material de aportación. Este tratamiento abarca diversos tipos de materiales, desde lodos procedentes de tuneladora que no han sido dispuestos e...

NotCal04 : Comparison/calibration C-14 records 26-50 cal kyr BP

NARCIS (Netherlands)

Plicht, J. van der; Beck, J.W.; Bard, E.; Baillie, M.G.L.; Blackwell, P.G.; Buck, C.E.; Friedrich, M.; Guilderson, T.P.; Hughen, K.A.; Kromer, B.; McCormac, F.G.; Bronk Ramsey, C.; Reimer, P.J.; Reimer, R.W.; Remmele, S.; Richards, D.A.; Southon, J.R.; Stuiver, M.; Weyhenmeyer, C.E.

2004-01-01

The radiocarbon calibration curve ImCal04 extends back to 26 cal kyr BP. While several high-resolution records exist beyond this limit, these data sets exhibit discrepancies of up, to several millennia. As a result, no calibration curve for the time range 26-50 cal kyr BP can be recommended as yet,

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

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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.

Obtención de pelets a partir de mineral de hierro en procesos de reducción directa

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Diana Carolina Africano Higuera Álvaro Forero Pinilla

2010-12-01

Full Text Available Inicialmente  se  realizó  la  toma  de  muestras representativas de  finos de mineral, aglomerantes y carbones motivo  de  estudio,  para  efectuar  su caracterización.  Paralelamente,  se  puso  a  punto  el disco peletizador de los laboratorios de la Escuela de Metalurgia de la UPTC. Luego se procedió a realizar mezclas de finos de mineral, de carbón y aglomerante, con el fin de encontrar las proporciones ideales para obtener pelets de alto rendimiento, teniendo en cuentacondiciones cinéticas y termodinámicas del proceso. El diseño experimental determinó que el número de ensayos por realizar es de 48, es decir, 3 repeticiones por cada muestra. Enseguida  se  realizaron ensayos para estudiar la reducibilidad de los pelets, evaluando el  comportamiento  de  estos  con  cada  uno  de  los aglomerantes una vez se ha alcanzado la temperatura de reducción. El prerreducido obtenido se analizó por métodos químicos y microscópicos.

Consolidating BPR with CALS

DEFF Research Database (Denmark)

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

1999-01-01

For almost a decade, Business Process Reengineering (BPR) has met a high degree of criticism as project implementations have failed to succeed in industry and public organisations. A vast majority of the reengineering literature recommends that information technology (IT) should enhance the effic......For almost a decade, Business Process Reengineering (BPR) has met a high degree of criticism as project implementations have failed to succeed in industry and public organisations. A vast majority of the reengineering literature recommends that information technology (IT) should enhance...... the likelihood of BPR success. Firstly, CALS contributes to process orientation and process organising in a BPR project. This is partly because CALS satisfies the increased information need of the process team members and partly because CALS breaks down information-based barriers. Secondly, CALS contributes...

Morteros de cal : aplicación en el patrimonio histórico

OpenAIRE

Cazalla Vázquez, Olga

2013-01-01

Los morteros de cal, ha sido un material de construcción muy utilizado en sus múltiples funciones a lo largo de la historia. Se construía tras una selección especialmente cuidada de sus materias primas y eran totalmente compatibles con el resto de elementos de fábrica. Hoy en día, se tiende a reemplazarlos por morteros de cemento, que aunque tienen muy buenas propiedades físico-mecánicas, son totalmente incompatibles con los demás elementos de fábrica, ya que además producen un fuerte impacto...

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

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

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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.

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 ...

PREDICATIVE VALUE OF SOME COMMON MOBILITY TESTS CRUCIAL FOR FORMING MARK IN THE PHYiCAL EDUCATION TEACHING

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Danijela Bulatović

2007-05-01

Full Text Available Up to the sam ple of 86 stu dents from 5th class of Ele men tary School »Ok to ih« in Pod go ri ca, we ma de re se arch in or der to esta blish the le vel of sta ti sti cal im por tan ce of the com mon mo bi lity tests in fl u en ce for for ming of the physi cal edu ca tion mark. By using of Pir son cor re la ti ve analysis, fol lo wed by the re gres si ve analysis, it was esta blis hed the im por tant mu tual con nec tion bet we en pre di ca ti ve and cri te rion va ri a ble. The co ef fi ci ent of cor re la tion has been spread from the mid dle (MT600= . 488, to the high nu me ri cal va lu es (MSDM =. 735.

O estudo mineralógico das cinzas volantes brasileiras: origem, caracteristicas e qualidade

OpenAIRE

Yushiro Kihara

1983-01-01

As cinzas volantes são resíduos fundamentalmente sílico-aluminosos, finamente divididos, provenientes da combustão do carvão mineral pulverizado, utilizado em usinas termelétricas. São considerados materiais pozolânicos, à semelhança das cinzas vulcânicas ácidas, por apresentarem capacidade de reação com a cal, em presença de água, originando a formação de compostos novos com propriedades aglomerantes. Estudaram-se 31 amostras de cinzas volantes das cinco principais termelétricas brasileiras ...

Aglomerante puzolánico formado por cal y ceniza de paja de caña de azúcar: la influencia granulométrica de sus componentes en la actividad aglomerante Pozzolanic binder constituted by lime and cane sugar straw ash: the granulometric influence of its components in the agglomerate activity

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Lesday Martínez Fernández

2007-08-01

Full Text Available En el presente trabajo se realiza una caracterización de los componentes de una mezcla binaria formada por cal-ceniza de paja de caña de azúcar mediante las técnicas analíticas de difracción de rayos-x, de análisis químico y granulometric o, valorándose la evolución del proceso de fraguado de esta mezcla binaria, permitiendo dar respuesta a la búsqueda de alternativas como adiciones minerales activas al cemento. Los parámetros estadísticos de las curvas granulométricas de la cal, de la ceniza de la paja de caña y de la mezcla puzolánica (calxeniza = 3:7 brindan criterios del grado de mezclado de los componentes de la mezcla puzolánica y de la utilización de los granos pequeños (The present study carried out a characterization of the components of a binary blend comprised of lime-cane sugar straw ash by means of the analytic techniques ofray-x diffraction, chemical, and granulometric analysis. The evolution of the setting process of this binary blend was assessed, and it appears as an alternative mineral active addition to cement. The statistical parameters of granulometric curves of the lime, the cane straw ash and the pozzolanic blend (lime: ash = 3:7 provide criteria for mixing the blend components fitting the small grains (<9um in the voids formed by bigger grains (45 um. The right size combination can create a space of enhanced reactivity providing compressive strengths of 13 MPa at the age of 28 days

DESEMPEÑO DEL CEMENTO PÓRTLAND ADICIONADO CON CALIZAS DE DIFERENTES GRADOS DE PUREZA

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JORGE IVÁN TOBÓN

2008-01-01

Full Text Available En este artículo se determina la incidencia de adicionar calizas de diferentes calidades al cemento Pórtland tipo III, en contraste a la caliza de alta calidad que la empresa Cementos El Cairo S. A., está incorporando a su cemento. Se sustituyó en el cemento 15, 20 y 25% de calizas con títulos (% de CaCO3 80%. Se evaluó la resistencia mecánica de morteros curados bajo condiciones estándar a 3, 7 y 28 días. En pastas se determinó la evolución mineralógica durante el proceso de hidratación usando Difracción de Rayos-X y Análisis Termogravimétrico. Se encontró que las calizas 75% (ASTM C311, estas calizas no presentan actividad puzolánica porque no producen las modificaciones mineralógicas que se esperan de una puzolana.

Características de desempeño de un concreto adicionado con cenizas volantesde alto nivel de inquemados

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Claudia Patricia Valderrama

2011-01-01

Full Text Available La ingeniería de hoy en día exige que las estructuras sean resistentes y durables, siendo esta última cualidad un factor determinante durante el diseño y la construcción de ella. En dicho sentido, el desarrollo de nuevos materiales cementantes y el mejoramiento de las propiedades de los concretos tradicionales, específicamente la reducción de la permeabilidad, mediante la incorporación de materiales tales como las puzolanas, continúa siendo objeto de estudio por parte de la comunidad científica. En el presente trabajo se analiza el efecto de las propiedades de resistencia mecánica a compresión, absorción capilar y permeabilidad a cloruros de un concreto adicionado con cenizas volantes (CV, y se compara su comportamiento respecto a mezclas adicionadas con humo de sílice (MS. Para el caso de las cenizas volantes, se encontró un porcentaje óptimo del 10% para las resistencias mecánicas; sin embargo, incrementos en la adición dan lugar a efectos positivos en las propiedades de durabilidad. En comparación con el humo de sílice, las cenizas volantes mostraron un desempeño inferior para todas las propiedades evaluadas.

Effect of addition of opaline siliceous rocks at different proportions to portland cement

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de Luxan, M. P.

1989-03-01

Full Text Available En este trabajo se estudia la influencia de la presencia de rocas silíceas opalinas, procedentes de las provincias de Salamanca, Zamora y Avila, en las propiedades de los cementos mixtos fabricados con cemento portland y proporciones variables de estas rocas utilizadas como adiciones activas. La caracterización de estos materiales y el estudio de las propiedades de los cementos preparados revelan la capacidad puzolánica de las rocas opalinas, y su singularidad respecto a otras puzolanas naturales, así como su posibilidad de empleo en la fabricación de cementos con adiciones.

En este trabajo se estudia la influencia de la presencia de rocas silíceas opalinas, procedentes de las provincias de Salamanca, Zamora y Avila, en las propiedades de los cementos mixtos fabricados con cemento portland y proporciones variables de estas rocas utilizadas como adiciones activas. La caracterización de estos materiales y el estudio de las propiedades de los cementos preparados revelan la capacidad puzolánica de las rocas opalinas, y su singularidad respecto a otras puzolanas naturales, así como su posibilidad de empleo en la fabricación de cementos con adiciones.

Diferencias y similitudes entre morteros de cal hidráulica y morteros mixtos de cal área y cemento portland

OpenAIRE

Peñaranda García, Pilar

2012-01-01

En el presente trabajo se estudian el mortero de cal hidráulica y el mortero mixto de cal aérea y cemento Portland, siendo este último el más utilizado en la actualidad, ya que la cal ha pasado a un segundo plano en la construcción debido a los grandes avances en la producción de cemento a lo largo del siglo XX. Estos avances han desplazado a la cal, un material utilizado desde hace milenios, olvidando su alta resistencia al paso del tiempo, cuya prueba es el gran volumen de ...

Influence of water-repellent treatment on the properties lime and lime pozzolan mortars

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Fortes Revilla, C.

2001-06-01

Full Text Available The influence that water-repellent products can have on physical and micro-structural properties of lime mortars, and lime plus pozzolan mortars has been studied. Three water repellent products have been used. Mixes of the previously mentioned three water repellents plus a biocide product were also applied. Treatments make the total porosity and saturation coefficient of both mortars to decrease, while colorimetric coordinates bear little alteration. All treatments with water repellent products provided mortars with a hydrophobic property index close to 100%. Durability of such mortars has been also studied: salt crystallization test, frost-thaw and dry-wet cycles, as well as ultraviolet radiation test were carried out. Relationship between mortars behavior and their porosity and saturation coefficient were found.

En el presente trabajo se ha estudiado la influencia de la aplicación de productos hidrofugantes a morteros de cal y morteros de cal y puzolana sobre sus propiedades físicas y microestructurales. Se han estudiado tres productos hidrofugantes. También han sido estudiados dichos productos junto con un biocida. La porosidad total y el coeficiente de saturación de ambos tipos de morteros se ve reducido por el efecto de los tratamientos mientras que las coordenadas colorimétricas se ven poco alteradas. Todos los tratamientos confieren un índice de hidrofobicidad a los morteros próximo al 100%. Asimismo, también se ha estudiado la durabilidad de dichos morteros frente a la cristalización de sales, hielo-deshielo, los ciclos de humedad-sequedad y radiaciones ultravioleta. Se relaciona el comportamiento de los morteros con su porosidad y el coeficiente de saturación.

Estudio del mortero de pega usado en el cantón Cuenca. Propuesta de mejora, utilizando adiciones de cal

OpenAIRE

González de la Cadena, José Fernando

2016-01-01

Esta investigación trata sobre el mortero de pega de mampostería, se estudia los materiales que lo componen, luego las propiedades del mortero de cemento-arena con dosificaciones similares a las de obra y un similar en condiciones de laboratorio, seguido se definen diferentes morteros de cemento-cal-arena. Con todos los morteros se realizan los mismos ensayos, en estado plástico los de: plasticidad, contenido de aire, retención de agua, y en el estado endurecido la resistencia a compresión. A...

CALS - What are the Potentials for SMEs ?

DEFF Research Database (Denmark)

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

1996-01-01

The Danish CALS Center initiative, aims at making CALS operational in Danish industry. The center consists of three Danish companies, Bang & Olufsen, Odense Steel Shipyard, Nilfisk besides from the Technical University of Denmark and the Danish Technological Institute. The objective is to demonst...

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.

884 Cal.BP and all that

International Nuclear Information System (INIS)

Switsur, Roy

1986-01-01

A history of the development of the technique of radiocarbon dating highlights the two problems with this method. The first is calibration; the radiocarbon calendar is not linear. However two independent experiments to provide high precision measurements in tree rings have resulted in a high precision calibration curve. The second is how to denote radiocarbon ages and calibrated dates, as this depends on how the dendrochronology time scale used in the calibration is transferred to the actual calendar. If the zero of the dendroscale is transferred from the origin of the Christian calendar to AD 1950, radiocarbon ages are designated CAL BP (BP = before present). There is an alternative method which results in CAL AD and CAL BC. A suggestion for a standard notation is made to avoid the confusion of two systems. (U.K.)

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....

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

NARCIS (Netherlands)

Hughen, Konrad A.; Baillie, Mike G.L.; Bard, Edouard; Beck, J. Warren; Bertrand, Chanda J.H.; Blackwell, Paul G.; Buck, Caitlin E.; Burr, George S.; Cutler, Kirsten B.; Damon, Paul E.; Edwards, Richard L.; Fairbanks, Richard G.; Friedrich, Michael; Guilderson, Thomas P.; Kromer, Bernd; McCormac, Gerry; Manning, Sturt; Bronk Ramsey, Christopher; Reimer, Paula J.; Reimer, Ron W.; Remmele, Sabine; Southon, John R.; Stuiver, Minze; Talamo, Sahra; Taylor, F.W.; Plicht, Johannes van der; Weyhenmeyer, Constanze E.

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

Experimentos en Antioquia con Fertilizantes para Papa.

Directory of Open Access Journals (Sweden)

Yepes Y. Emilio

1949-03-01

Full Text Available Con el fin de determinar la adecuada aplicación de cal. y la economía de la adición de Nitrógeno, Fósforo y Potasio, se realizaron varios experimentos de fertilizantes para papa en dos regiones productoras de Antioquia. Los experimentos se realizaron por el sistema de "Parcelas divididas y del análisis estadístico de los resultados pueden sacarse las siguientes conclusiones: 1. Es notable la deficiencia de Fósforo en ambos suelos, y hubo respuesta significativa a una aplicación de 120 kilos por hectárea. 2. Los suelos responden a una aplicación moderada de Nitrógeno y Potasio, pero puede lograrse una economía importante en las cantidades de estos elementos. 3. Parece que la aplicación de dos toneladas de cal por cuadra es suficiente, y no hay razón para aconsejar cantidades mayores. 4. Los resultados obtenidos demuestran que sí es posible la experimentación con fertilizante para papa, y sería de desear que se ampliara la experimentación en las demás regiones productoras.

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.

Datos para el conocimiento del patrimonio minero de la comarca aragonesa de los Monegros. II hornos de yeso y hornos de cal

OpenAIRE

Mata Perello, Josep Maria; Alfonso Abella, María Pura; Climent Costa, Ferran; Parcerisa Duocastella, David; Pocoví Juan, Andrés; Vilaltella Farràs, Jaume

2013-01-01

En este artículo, nos centraremos en el Patrimonio Minero de la comarca aragonesa de los Monegros, especialmente en el relacionado con las Hornos de Yeso y con los Hornos de Cal. Se trata de una comarca situada en el centro de Aragón, ubicada totalmente dentro de la Depresión Geológica del Ebro, entre afloramientos de materiales cenozoicos. Dentro de esta comarca existen interesantes elementos del Patrimonio Minero de la Comunidad Aragonesa. Estos elementos se hallan relacionados fundament...

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

Directory of Open Access Journals (Sweden)

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.

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...

Windows Calorimeter Control (WinCal) program computer software design description

International Nuclear Information System (INIS)

Pertzborn, N.F.

1997-01-01

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

Fixed Combination Aerosol Foam Calcipotriene 0.005% (Cal) Plus Betamethasone Dipropionate 0.064% (BD) is More Efficacious than Cal or BD Aerosol Foam Alone for Psoriasis Vulgaris

Science.gov (United States)

Tyring, Stephen; Bukhalo, Michael; Alonso-Llamazares, Javier; Olesen, Martin; Lowson, David; Yamauchi, Paul

2016-01-01

Objective: To evaluate the efficacy of fixed combination aerosol foam calcipotriene 0.005% (Cal) plus betamethasone dipropionate 0.064% (BD). Design: Patients were randomized (100:101:101) to receive Cal/BD foam, Cal foam, or BD foam once daily for four weeks. Setting: Twenty-eight United States centers. Participants: 302 patients (≥18 years) with Psoriasis vulgaris (plaque Psoriasis; ≥mild disease severity by physicians global assessment). Measurements: Treatment success of the body (“clear”/”almost clear” from baseline moderate/severe disease; “clear” from baseline mild disease). Involved scalp treatment success was an additional endpoint. Results: Most patients (76%) had moderate Psoriasis of the body (66% for scalp). At Week 4, 45 percent of Cal/BD foam patients achieved treatment success, significantly more than Cal foam (14.9%; OR 4.34 [95%CI 2.16,8.72] Pfoam (30.7%; 1.81 [1.00,3.26] P=0.047). Fifty-three percent of Cal/BD foam patients achieved treatment success of the scalp, significantly greater than Cal foam (35.6%; 1.91 [1.09,3.35] P=0.021), but not BD foam (47.5%; 1.24 [0.71,2.16] P=0.45). Mean modified Psoriasis area and severity index (population baseline 7.6) improved in all groups, with statistically significant differences in Week 4 Cal/BD foam score (2.37) versus Cal foam (4.39; mean difference -2.03 [-2.63][-1.43] Pfoam (3.37; -1.19 [-1.80][-0.59] Pfoam was significantly more effective than Cal foam and BD foam in providing treatment success at Week 4 and effective on involved scalp. Trial registration: NCT01536938. PMID:27313822

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

EVALUACIÓN EXPERIMENTAL DE UNIDADES SÍLICO-CALCÁREAS A PARTIR DE ESCORIA DE ALTO HORNO Y CAL HIDRÁULICA PARA MAMPOSTERÍA

Directory of Open Access Journals (Sweden)

NILSON ARIEL LEÓN

2009-01-01

Full Text Available El presente artículo estudia la posibilidad de fabricar elementos sílico-calcáreos para mampostería a partir de dos tipos de materias primas como son las escorias de Alto Horno y las cales hidráulicas. En el presente trabajo se evaluaron algunas propiedades físicas de las probetas fabricadas con los anteriores materiales con respecto a la Norma Técnica Colombiana, para 5 tipos de mezclas que varían entre 10 y 50 % de cal. Los resultados mostraron que es factible la fabricación de ladrillos sílico-calcáreos para mampostería que cumplen con la NTC 922.

Applied CAL on Problem Based Learning Using Gagne’s Instructional Design

Directory of Open Access Journals (Sweden)

Sri Sundari Purbohadi

2014-10-01

Full Text Available Abstract— In the Problem-Based Learning (PBL model, students are expected to study independently. One of the methods that can improve the ability or skill of learners is using Computer Assisted Learning (CAL. Implementation of CAL in PBL should be able to create Self-Directed Learning (SDL culture through appropriate instructional design and interesting modules. In this paper, the CAL software is developed using multimedia learning principles, convenient appearance, and user-friendly navigation. The CAL’s learning content is designed using Gagne's instructional design. The experiment proved the CAL was able to give effect size 0.89 and developed self-directed learning culture. From the interviews, students were very glad and interested to use the CAL modules because they can learn anytime and can reach the course objectives without a lecturer.

Composite cements containing natural pozzolan and granulated blast furnace slag

Directory of Open Access Journals (Sweden)

Irassar, E. F.

2006-09-01

Full Text Available For reasons of market demand and Portland cement production,the manufacture of cements with two or more separately ground additions to produce customized cements is becoming common practice.When pozzolan or slag content in this type of cements is high, however, the initial strength of the resulting product may be adversely impacted. This problem can be minimized by activating one or both of the replacement materials. The present study analyzes the effect of Portland cement additions such as physically activated natural pozzolan(up to 20% and/or granulated blast furnace slag (up to 35% on mortar flexural and compressive strength. The results show that higher strength is attained in ternary than binary cements. Initially (2 and 7 days, the highest compressive strengths are reached by mortars with up to 13% natural pozzolan and 5% slag, whereas at later ages mortars with larger proportions of additions are found to perform best.Debido a las exigencias del mercado y de la producción de cemento Portland, es cada vez más frecuente la elaboración de cementos con dos o más adiciones a partir de la molienda separada de sus constituyentes, dando origen a la formulación de los cementos a medida.Cuando el contenido de adiciones es alto, la utilización de puzolana y escoria en este tipo de cementos presenta la peculiaridad de disminuir la resistencia inicial del cemento resultante. Sin embargo, si algunas o ambas adiciones se activan, este problema puede minimizarse. En este trabajo se analiza la influencia de la incorporación al cemento Portland de puzolana natural (hasta 20% activada físicamente y/o escoria granulada de alto horno (hasta 35% sobre la resistencia a flexión y a compresión de morteros. Los resultados indican que los cementos ternarios presentan un mejor comportamiento resistente que los cementos binarios. Las máximas resistencias a compresión en las primeras edades (2 y 7 díasse alcanzan con hasta 13% de puzolana natural y 5% de

On the correspondence between CAL and lagged cohort life expectancy

Directory of Open Access Journals (Sweden)

Michel Guillot

2011-04-01

Full Text Available 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 build on previous work by evaluating the extent to which the correspondence holds in actual populations. We also discuss the implications of the CAL-LCLE correspondence (or lack thereof for using CAL as a measure of cohort life expectancy, and for understanding the connection between CAL, LCLE, and underlying period mortality conditions.

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

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...

Solar CalPoly

Energy Technology Data Exchange (ETDEWEB)

Stannard, Sandra [California Polytechnic State Univ., San Luis Obispo, CA (United States)

2016-06-15

The target budget of INhouse was about $650,000 for all materials and student expenses of the Solar Decathlon competition. In order to reach our goal, Cal Poly students and faculty worked with the College of Architecture and Environmental Design’s External Relations office to actively fundraise for INhouse. Students connected with Cal Poly alumni through phone calls, postal mail, email, and live presentations to reach as many alumni in the state of California as possible. Before construction begun, students and faculty met on a weekly basis to determine what brands of materials for the home to use and who would be responsible for reaching out to the company to seek a donation. Our College of Architecture and Environmental Design’s administration was essential in helping us fundraise. For some time, the college was hoping to depend on about half of our fundraising expenses to be covered through the sale of INhouse. However, plans to sell the home fell through during the design development phase; the college turned to the sale of a different asset in to help us meet our goal. If we were to do this project again, completing the design concept and securing a future location of our home sooner would have enhanced our fundraising activities.

Evolution of the hydration in cements with additions

Directory of Open Access Journals (Sweden)

Bonavetti, V. L.

2002-12-01

Full Text Available In this paper, the hydration mechanism of portland cement pastes with limestone, quartz and natural pozzolan (80/20 weight was analized. The techniques used were nonevaporable water content, pozzolanic activity and X-ray diffraction. Results show that filler effect increases initially the amount of hydration products in all pastes. For limestone pastes, the dilution effect is significant at long time, for quartz and pozzolan pastes the dilution effect was lower due to the contribution of the pozzolanic reaction.

En el presente trabajo se analizó el mecanismo de hidratación de pastas de cemento portland normal con la incorporación de caliza, cuarzo y puzolana natural (proporción 80/20 en peso, por medio de la evaluación del contenido de agua no evaporable, la actividad puzolánica por vía química y la formación de productos de hidratación por DRX. Los resultados obtenidos permitieron determinar un aumento de la cantidad de productos de hidratación inicial debidos al efecto filler en todas las pastas. En las pastas con caliza se evidenció el efecto de dilución a edades avanzadas, en tanto que en las pastas con cuarzo y puzolana, este efecto fue menos predominante debido a la contribución de la reacción puzolánica.

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

NARCIS (Netherlands)

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.; Grootes, P. M.; Guilderson, T. P.; Hajdas, I.; Heaton, T. J.; Hogg, A. G.; Hughen, K. A.; Kaiser, K. F.; Kromer, B.; McCormac, F. G.; Manning, S. W.; Reimer, R. W.; Richards, D. A.; Southon, J. R.; Talamo, S.; Turney, C. S. M.; van der Plicht, J.; Weyhenmeye, C. E.; Weyhenmeyer, C.E.

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

The Pace of CalWORKs Implementation

National Research Council Canada - National Science Library

Klerman, Jacob

2000-01-01

...) and Greater Avenues to Independence (GAIN) with the California Work Responsibility to Kids (CalWORKs) program. Following an open and competitive bidding process, the California Department of Social Services...

The Pace of CalWORKS Implementation

National Research Council Canada - National Science Library

Klerman, Jacob

1999-01-01

...) and Greater Avenues to Independence (GAIN) with the California Work Responsibility to Kids (CalWORKs) program. Following an open and competitive bidding process, the California Department of Social Services...

Estrategias de desarrollo para la empresa Cal del Centro S.A.C.

OpenAIRE

Bautista Antón, Yovanni Patricia; Mendoza Rojas, Miguel Ángel

2015-01-01

Cal del Centro S.A.C. es una sociedad anónima cerrada cuyo negocio gira en torno a la actividad económica de la fabricación de cemento, cal y yeso. El objetivo del presente trabajo es evaluar la posibilidad de éxito de un proyecto de inversión en una planta de cal, a través de Cal del Centro S.A.C. –como empresa autosuficiente–, para asegurar el cien por ciento del suministro de óxido de calcio en cantidad y calidad para el procesamiento de concentrados de cobre y el tratamiento de aguas indu...

Design de calçado do processo criativo à produção

OpenAIRE

Rolo, Margarida Filipa Gonçalves Araújo

2016-01-01

O seguinte projeto tem como tema principal o Design de calçado, pois foi com base nesse tema que foi feito todo o enquadramento teórico de modo a fundamentar a criação da coleção final de calçado a que este projeto se pretende. Logo, foi realizada uma pesquisa sobre a história do calçado, os seus materiais e componentes, tipos de sapatos e saltos, a indústria do calçado em Portugal e seus principais designers, entre outros. Este projeto consiste na criação de uma coleção cápsula de calçado...

Foamglas D. 1. T. N.° 19 Convalidación del Agrément 1. N. L n.° 1.031. Aislamiento de cubiertas isolation pour toitures roof insulation

Directory of Open Access Journals (Sweden)

Editorial, Equipo

1968-11-01

Full Text Available Not availableEl Foamglas es un material constituido por vidrio químicamente puro, de tipo boro-silicato, inorgánico, sin adición de aglomerante. Se presenta y utiliza en placas de diferentes dimensiones estandarizadas. Estas placas se colocan en cubiertas planas o con pendiente. Se unen con betún y se recubren con una impermeabilización. Otros empleos no considerados en el presente documento son: en el doblado de muros, en las cámaras frigoríficas, en las fachadas ligeras, falsos techos, en el aislamiento de depósitos de agua y tuberías.

CalCOFI Larvae Counts Positive Tows

Data.gov (United States)

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

El sentimiento en la antigua construcción. Revestimientos con mortero de cal, estucos y terrajados en el Jardín del Príncipe del Real Alcázar de Sevilla

Directory of Open Access Journals (Sweden)

Robador, M.D.

2006-06-01

�€œhechos a mano”, podemos ver marcados los dedos, las huellas, de los que, en su día, hace muchos años, siglos, hicieron sin máquinas esos ladrillos. Una prenda, un bordado, hecho a mano, con sus pequeñísimas imperfecciones tiene un carácter mucho mayor que los elaborados a máquina. Una fotografía en color, a pesar de su perfección, se valora menos que esa misma imagen pintada por la mano de un artista. Un conjunto de edificios actuales de serie no tiene el mismo valor, ni el alma, ni la personalidad, de un edificio proyectado con exclusividad por un buen arquitecto1. En este texto exponemos un estudio pormenorizado de la influencia del sentimiento en los revestimientos con los antiguos morteros de cal y estuco. Ponemos como ejemplo la restauración que se ha hecho del Patio del Príncipe del Real Alcázar de Sevilla, en la que se ha respetado al máximo la utilización de los antiguos morteros de cal y estuco, aplicados manualmente, tal como se hizo en la época en que se construyó. Se aplicaron y se han vuelto a utilizar revestimientos continuos y terrajados en marcos de ventanas, portadas, arcos, cornisas y elementos decorativos. El haber restaurado este patio con técnicas artesanales le ha impregnado del espíritu de su primigenia construcción.

CalCOFI Egg Counts Positive Tows

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...

Identificación de una tradición tecnológica cerámica con desgrasante óseo en el Neolítico peninsular. Estudio arqueométrico de materiales cerámicos de Madrid (5300-3400 cal AC

Directory of Open Access Journals (Sweden)

Vírseda, Lydia

2011-06-01

Full Text Available The archaeometric characterization of a set of potsherds from six Neolithic sites from the Madrid region has allowed the identification of a new and time-persisting regional technological tradition, based on the deliberated addition of crushed bone as temper in most pottery containers. This is the first known case in Iberia, and is outstanding because of its early chronologies and persistence in time: from 5300 to perhaps 3400 cal BC. Samples were characterized by complementary mineralogical and geochemical techniques such as thin-section, conventional and grazing angle X-ray diffraction (XRD, scanning electron microscopy (SEM and X-ray fluorescence spectrometry (XRF. The addition of bone temper created a light and resistant ceramic material, with technological advantages for both the storage and transportation. Such advantages might be linked to mobile or semi-sedentary groups.

La caracterización arqueométrica de un conjunto de materiales cerámicos procedentes de 6 yacimientos neolíticos de Madrid ha permitido identificar una nueva tradición tecnológica regional persistente en el tiempo, basada en la adición intencionada de hueso machacado como desgrasante en la mayoría de los recipientes cerámicos. Se trata del primer caso de la Península Ibérica en el que se documenta este tipo de desgrasante en cerámicas de estas cronologías con una continuidad temporal de entre el 5300/5200 hasta posiblemente el 3400 cal AC. Los materiales seleccionados se caracterizaron por técnicas mineralógicas y geoquímicas complementarias como lámina delgada, difracción de rayos X (DRX convencional y de ángulo rasante, microscopía electrónica de barrido (MEB y espectrometría de fluorescencia de rayos X (FRX. La adición de hueso produce un material cerámico ligero pero a su vez resistente, con ventajas tecnológicas para recipientes de almacenamiento y/o transporte. Dichas ventajas quizá podrían vincularse a grupos con hábitos m

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…

Views of a Cal/OSHA Inspector.

Science.gov (United States)

Oudiz, Jack

2009-01-01

Retiring CAL/OSHA Industrial Hygienist and Senior Safety Engineer Jack Oudiz offers his thoughts in the nature of a voluntary "exit interview" on his years working for the agency and its performance in its mission.

The impact of BeamCal performance at different international linear ...

Indian Academy of Sciences (India)

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 ...

Progress Report on an Ultra-compact LumiCal

CERN Document Server

Borysov, O

2018-01-01

A new design of a detector module of submillimeter thickness for an electromagnetic calorimeter is presented. It is aimed to be used in the luminometers LumiCal and BeamCal in future linear e+e− collider experiments. The module prototypes were produced utilizing novel connectivity schemes technologies. They are installed in a compact prototype of the calorimeter and tested at DESY with an electron beam of 1 GeV – 6 GeV. The performance of eight detector modules and the possibility of electron and photon identification is studied.

Cal-Bridge and CAMPARE: Engaging Underrepresented Students in Physics and Astronomy

Science.gov (United States)

Rudolph, Alexander L.; Cal-Bridge and CAMPARE Teams

2018-01-01

We describe two programs, Cal-Bridge and CAMPARE, 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, creating a national impact on their numbers successfully pursuing a PhD in the field.In 8 years, the CAMPARE program has sent 112 students, >80% from underrepresented groups, to conduct summer research at one of 14 major research institutions throughout the country. Of the CAMPARE scholars who have graduated with a Bachelor’s degree, almost two-thirds (65%) have completed or are pursuing graduate education in physics, astronomy, or a related field, at institutions including UCLA, UC Riverside, UC Irvine, UC Santa Barbara, USC, Stanford, Univ. of Arizona, Univ. of Washington, Univ. of Rochester, Michigan State Univ., Georgia Tech, Georgia State Univ., Kent State, Indiana Univ., Univ. of Oregon, Syracuse Univ., Montana State Univ., and the Fisk-Vanderbilt Master’s-to-PhD program.Now entering its fourth year, the Cal-Bridge program is a CSU-UC Bridge program comprised of >140 physics and astronomy faculty from 9 University of California (UC), 15 California State University (CSU), and 30 California Community College (CCC) campuses throughout California. In the first four years, 34 Cal-Bridge Scholars have been selected, including 22 Hispanic, 3 African-American and 13 women students, 10 of whom are from URM groups. Thirty (30) of the 34 Cal-Bridge Scholars are first generation college students. In the last two years, 11 of 13 Cal-Bridge Scholars have begun PhD programs in physics or astronomy at top PhD programs nationally. Three (3) of these 11 scholars have won NSF Graduate Research Fellowships; one more received an Honorable Mention. The next cohort applies this fall.Cal-Bridge provides much deeper mentoring and professional development experiences over the last

Thaumasite formation in hydraulic mortars by atmospheric SO₂ deposition

Directory of Open Access Journals (Sweden)

Blanco-Varela, M. T.

2001-12-01

Full Text Available Sulphation of mortars and concretes is a function of diverse environmental factors (SO₂ aerosol, temperature, etc as well as some material characteristics. One of the phases that could be formed as consequence of the sulphation of the hydraulic binder is thaumasite. In this paper different hydraulic mortars have been exposed to laboratory exposure chambers in order to reproduce thaumasite formation due to atmospheric SO₂. Under the laboratory exposure conditions, thaumasite was formed in hydraulic lime mortars, and mortars elaborated with ordinary Portland cement as well as mineralized white portland cement. However, thaumasite was not formed in mortars made of lime and pozzolan. The first product formed as a result of the SO₂-mortar interaction was gypsum. Gypsum reacted with calcite and C-S-H gel, present in the samples, giving place to thaumasite. Low temperature promotes thaumasite formation.

La sulfatación de morteros y hormigones depende de las condiciones ambientales (SO₂ aerosol, temperatura, etc., así como de las características del material. Una de las fases que se puede formar como consecuencia de la sulfatación de los ligantes hidráulicos es la taumasita. En este trabajo se han expuesto diferentes morteros hidráulicos en cámaras de laboratorio con el fin de reproducir la formación de taumasita por efecto del SO₂ atmosférico. Bajo las condiciones de laboratorio se formó taumasita en los morteros de cal hidráulica y en los morteros fabricados con cemento portland y cemento blanco mineralizado. Sin embargo, cuando el ligante utilizado en los morteros fue cal y puzolana, no se formó taumasita. El yeso fue el primer producto formado en la interacción entre los morteros y el SO₂. A continuación, este yeso reaccionó con la calcita y el gel C-S-H dando lugar a la formación de taumasita. Las bajas temperaturas favorecieron la formación de taumasita.

Caracterización estructural por adsorción y difracción de rayos X de monolitos de carbón activado a partir de cáscara de coco y cuesco de palma africana

OpenAIRE

Vargas Delgadillo, Diana; Giraldo-Gutiérrez, Liliana; Moreno-Piraján, Juan

2009-01-01

Se prepararon monolitos de carbón activado tipo disco utilizando como precursores por separado cáscara de coco y cuesco de palma africana mediante la activación química con ácido fosfórico, utilizando diferentes concentraciones, sin el uso de ningún aglomerante. Se presentan el rendimiento del proceso, así como los parámetros estructurales determinados por adsorción de N2 a 77 K y CO2 a 273 K, y se comparan con algunos parámetros cristalográficos determinados por difracción de rayos X. Se obt...

Síntesis y caracterización de monolitos de carbón activado utilizando como precursor cáscara de coco

OpenAIRE

Vargas Delgadillo, Diana; Giraldo-Gutierréz, Liliana; Ladino-Ospina, Yolanda; Moreno-Piraján, Juan

2009-01-01

Diferente series de monolitos de carbón activado fueron preparados por activación química de cáscara de coco con cloruro de zinc a diferentes concentraciones, sin el uso de ningún aglomerante. El paso de conformado por prensado fue introducido entre la impregnación con el agente químico y el tratamiento térmico. Las estructuras fueron caracterizadas por adsorción de N2 a 77 K, microscopia electrónica de barrido (SEM) y algunas series fueron también caracterizadas mediante calorimetría de inme...

Metallurgical production from North-east of the Iberian Peninsula during III millennium cal. BC: the Bauma del Serrat del Pont (Tortellá, Girona workshop

Directory of Open Access Journals (Sweden)

Alcalde, Gabriel

1998-06-01

Full Text Available We examine the third millennium cal. BC levels from the small rockshelter of Bauma del Serrat del Pont. The site was settled by a small group, building a perishable structure except in the II. 5 level. Some evidence suggests a seasonal occupation of the site. Multidisciplinary research shows a broad spectrum of local resources involved in the dairy life of this people, including those related to metallurgical activity. We find very old tin alloys, plain or bell beaker decorated pot-furnaces (used to smelt copper ores and clay tuyeres.

Se presentan los resultados de la excavación en los niveles del III milenio cal. AC del pequeño abrigo rocoso de la Bauma del Serrat del Pont. El yacimiento fue ocupado por un grupo pequeño que organizó el espacio interno con una estructura de material perecedero, excepto en el nivel II.5. Algunos datos indican que las ocupaciones pudieron tener un carácter estacional. Los estudios multidisciplinares reconstruyen un aprovechamiento diversificado de recursos locales, entre los que se integran los dedicados a las tareas metalúrgicas. Se documentan aleaciones intencionadas de bronce de gran antigüedad, el empleo de vasijas horno con o sin decoración campaniforme, y toberas de arcilla.

LA DISCREPANCIA ENTRE LOS RESULTADOS DE LAS PRUEBAS VESTIBULARES (CALÓRICA Y VHIT EN PACIENTES CON ENFERMEDAD DE MÉNIÈRE NO SE DEBE A LA DISFUNCIÓN DEL SISTEMA DE ALMACENAMIENTO DE VELOCIDAD

Directory of Open Access Journals (Sweden)

Paloma Eza Núñez

2018-05-01

Full Text Available Introducción y objetivo:Las pruebas de función vestibular en pacientes con la Enfermedad de Ménière (EM aportan información sobre el déficit de los distintos receptores de cada oído y sobre el estado de compensación. La congruencia entre los resultados de la prueba calórica (CAL, el sillón rotatorio (ROT y el vHIT es importante cuando realizamos el screening de pacientes con vestibulopatía. Sin embargo, muchas veces encontramos discrepancias en los resultados. Esto puede ser debida a las propiedades de cada test o a la disfunción del mecanismo vestibular central de almacenamiento de velocidad que se caracteriza por la medidad de la constante de tiempo (CT de la fase lenta del nistagmo provocado al realizar la prueba del sillón rotatorio.  La hipótesis del trabajo es: las discrepancias entre ambas pruebas es debida a las características propias de cada una que deberían poder detectarse en ROT y en particular, en la medida de la CT.  Material y Método: Los pacientes incluidos fueron diagnosticados de EM unilateral de acuerdo a los criterios de la AAO-HNS. Para analizar los resultados de ROT se utilizaron los datos de un grupo de sujetos normales voluntarios. Todos fueron sometidos a CAL, VHIT y ROT (aceleración sinusoidal armónica y prueba impulsiva. Para el análisis estadístico los pacientes se dividieron en tres grupos: NN (CAL y vHIT normal, AN (CAL patológico y vHIT normal y AA (CAL y vHIT patológicos. Se realizó un estudio descriptivo para analizar las diferencias entre los tres grupos y en el caso de los resultados de ROT, con el grupo control. El análisis estadístico se realizó con SPSS (versión 19Resultados:Los resultados se muestran en la Tabla 1.CAL y vHIT: los resultados se resumen en la figura 1. ROT: en la figura 2 se representan las medias de fase y ganancia de los pacientes comparados con el grupo control. En la tabla 2 se muestran los valores de p para cada frecuencia analizada respecto al valor en

Windows Calorimeter Control (WinCal) program computer software test plan

International Nuclear Information System (INIS)

Pertzborn, N.F.

1997-01-01

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

Cal-Bridge and CAMPARE: Engaging Underrepresented Students in Physics and Astronomy

Science.gov (United States)

Rudolph, Alexander L.; Smecker-Hane, Tammy A.; Cal-Bridge Team; CAMPARE Team

2018-06-01

We describe two programs, Cal-Bridge and CAMPARE, 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, creating a national impact on their numbers successfully pursuing a PhD in the field. In 9 years, the CAMPARE program has sent 150 students, >80% from underrepresented groups, to conduct summer research at one of 14 major research institutions throughout the country. Of the CAMPARE scholars who have graduated with a Bachelor’s degree, almost two-thirds (65%) have completed or are pursuing graduate education in physics, astronomy, or a related field, at institutions including UCLA, UC Riverside, UC Irvine, UC Santa Barbara, USC, Stanford, Univ. of Arizona, Univ. of Washington, Univ. of Rochester, Michigan State Univ., Georgia Tech, Georgia State Univ., Kent State, Indiana Univ., Univ. of Oregon, Syracuse Univ., Montana State Univ., and the Fisk- Vanderbilt Master’s-to-PhD program. Now in its fourth year, the Cal-Bridge program is a CSU-UC Bridge program comprised of physics and astronomy faculty from 9 University of California (UC), 15 California State University (CSU), and more than 30 California Community College (CCC) campuses throughout California. In the first four years, 34 Cal-Bridge Scholars have been selected, including 22 Hispanic, 3 African-American and 13 women students, 10 of whom are from URM groups. Thirty (30) of the 34 Cal-Bridge Scholars are first generation college students. In the last three years, 17 of 21 Cal-Bridge Scholars have begun or been accepted PhD programs in physics or astronomy at top PhD programs nationally. Three (3) of these scholars have won NSF Graduate Research Fellowships; one more received an Honorable Mention. Once selected, Cal-Bridge Scholars benefit from substantial financial support, intensive, joint mentoring by CSU

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

DEFF Research Database (Denmark)

Larsen, Michael Holm

1998-01-01

incorporates relevant information about each stage of the production process.The paper will describe the research object, the model object and discuss a part of the methodology in developing a Product State Model. The project is primarily technological, however, organisational and human aspects......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...

Método simple para determinar el módulo de Young dinámico a partir de una excitación por impacto, aplicado a morteros de cal y cemento

OpenAIRE

Rosell, J. R.; Cantalapiedra, I. R.

2011-01-01

El presente trabajo muestra un método simple para determinar el módulo de Young dinámico (MOE) a partir de pequeñas perturbaciones mecánicas producidas a probetas de mortero de cal y de cemento, correlacionando los resultados obtenidos con las correspondientes mediciones realizadas con otras técnicas. El procedimiento sigue básicamente las instrucciones fijadas en la norma UNE-EN ISO 12680-1 de productos refractarios, pero aplicándolo a probetas normalizadas RILEM 4x4x16 de morteros confec...

«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.

LumiCal alignment system - Status report

CERN Document Server

Daniluk, W.; Lesiak, T.; Moszczyński, A.; Pawlik, B.; Wojtoń, T.; Zawiejski, L.

2015-01-01

The paper describes the status of the laser-based alignment-system for the luminosity detector, LumiCal, taking into considerations the conditions of the International Large Detector in the International Linear Collider project. The design of the system comprises two parts: the first one containing semi-transparent silicon sensors used to deliver simultaneous position measurements in the X,Y directions of the monitored object, and the second one in which the interferometric technique, i.e. the Frequency Scanning Interferometry (FSI), is proposed. Two laboratory prototypes for both components of the system were built and the preliminary measurements of the DUT displacements demonstrated their utility in the design of the final alignment system. The alignment of the LumiCal detector will allow us to monitor the detector displacements and possible deformations in its internal structure. Lack of information of the displacements will introduce a systematic effect which will have an impact on the accuracy of the fi...

A Novel TetR Family Transcriptional Regulator, CalR3, Negatively Controls Calcimycin Biosynthesis in Streptomyces chartreusis NRRL 3882

Directory of Open Access Journals (Sweden)

Lixia Gou

2017-11-01

Full Text Available Calcimycin is a unique ionophoric antibiotic that is widely used in biochemical and pharmaceutical applications, but the genetic basis underlying the regulatory mechanisms of calcimycin biosynthesis are unclear. Here, we identified the calR3 gene, which encodes a novel TetR family transcriptional regulator and exerts a negative effect on calcimycin biosynthesis. Disruption of calR3 in Streptomyces chartreusis NRRL 3882 led to significantly increased calcimycin and its intermediate cezomycin. Gene expression analysis showed that the transcription of calR3 and its adjacent calT gene were dramatically enhanced (30- and 171-fold, respectively in GLX26 (ΔcalR3 mutants compared with the wild-type strains. Two CalR3-binding sites within the bidirectional calR3-calT promoter region were identified using a DNase I footprinting assay, indicating that CalR3 directly repressed the transcription of its own gene and the calT gene. In vitro electrophoretic mobility shift assays suggested that both calcimycin and cezomycin can act as CalR3 ligands to induce CalR3 to dissociate from its binding sites. These findings indicate negative feedback for the regulation of CalR3 in calcimycin biosynthesis and suggest that calcimycin production can be improved by manipulating its biosynthetic machinery.

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.

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

NARCIS (Netherlands)

Reimer, Paula J.; Bard, Edouard; Bayliss, Alex; Beck, J. Warren; Blackwell, Paul G.; Bronk Ramsey, Christopher; Buck, Caitlin E.; Cheng, Hai; Edwards, R. Lawrence; Friedrich, Michael; Grootes, Pieter M.; Guilderson, Thomas P.; Haflidason, Haflidi; Hajdas, Irka; Hatté, Christine; Heaton, Timothy J.; Hoffmann, Dirk L.; Hogg, Alan G.; Hughen, Konrad A.; Kaiser, K. Felix; Kromer, Bernd; Manning, Sturt W.; Niu, Mu; Reimer, Ron W.; Richards, David A.; Scott, E. Marian; Southon, John R.; Staff, Richard A.; Turney, Christian S.M.; Plicht, Johannes van der; Reimer, Paula 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

Tests with beam setup of the TileCal Phase-II upgrade electronics

CERN Document Server

Hlaluku, Dingane Reward; The ATLAS collaboration

2017-01-01

The LHC has planned a series of upgrades culminating in the High Luminosity LHC (HL-LHC) which will have an average luminosity 5-7 times larger than the nominal Run-2 value. The ATLAS Tile Calorimeter (TileCal) will undergo an upgrade to accommodate to the HL-LHC parameters. The TileCal electronics both on- and off-detector will be completely redesigned and a new readout architecture will be adopted. The photomultiplier signals will be digitised and transferred to the TileCal PreProcessors (PPr) located off-detector for every bunch crossing. Then, the PPr will provide preprocessed digital data to the first level trigger with improved spatial granularity and energy resolution with respect to the current analog trigger signals. We plan to insert one TileCal module instrumented with the new electronics in the real detector to evaluate and qualify the new readout and trigger concepts in the overall ATLAS data acquisition system. This new drawer, so-called Hybrid Demonstrator, must provide analog trigger signal fo...

Como enfrentar o \\'Fenômeno China\\' na produção de calçados: proposta de estratégia competitiva para a indústria calçadista brasileira.

OpenAIRE

Mario Luiz Bimbatti

2007-01-01

A competição no mercado internacional com os produtores mundiais, pode ser uma fonte de excelentes oportunidades ou de perigosas armadilhas, como o desafio de difícil solução, representado pelos produtores mundiais de calçados com baixos custos de mão-de-obra, por exemplo, os chineses. A grande maioria dos produtores brasileiros de calçados está estabelecida em clusters, como na Europa os produtores italianos de calçados estão estabelecidos nos \\"distretti\\". Essas concentrações geográficas d...

' "~w.ith ~a'~nd"Atypz'cal Features

African Journals Online (AJOL)

2006-09-11

}? While there have been reports of ' this syndrome from ' Ibadan,' the exact incidence 1\\_Iigeria is It probably rare but it is alsoylikely that 'some. cases are missed in chm', 'cal due to poor awareness -and constraints' '.

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.

Contribución al estudio de la sacarosa como aditivo retardador de la hidratación del cemento

Directory of Open Access Journals (Sweden)

Sotolongo, R.

1993-06-01

Full Text Available It is evaluated the influence of the saccharose as a retarder additive of the cement set in the hydration of the alita and the development of the mechanical proprieties of Portland cement pastes till the age of 70 days. The study has had in consideration additions of saccharose of o to 0.400 % / cement weight, also the influence of the fineness of the conglomerate and the use of the retarder mixed with an additive superplastic and an active mineral (natural puzolana.

Se evalúa la influencia de la sacarosa como aditivo retardador del fraguado del cemento en la hidratacion de la alita y el desarrollo de las propiedades mecánicas de pastas de cemento portland hasta la edad de 90 días. El estudio contempló adiciones de sacarosa de 0 a 0,400% /peso del cemento, así como la influencia de la finura del conglomerante y el uso del retardador mezclado con un aditivo superplastificante y un mineral activo (puzolana natural.

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

International Nuclear Information System (INIS)

Westsik, G.A.

1997-01-01

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

CALS Baseline Architecture Analysis of Weapons System. Technical Information: Army, Draft. Volume 8

Science.gov (United States)

1989-09-01

This effort was performed to provide a common framework for analysis and planning of CALS initiatives across the military services, leading eventually to the development of a common DoD-wide architecture for CALS. This study addresses Army technical ...

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; Otalora Goicochea, J M; Owen, P; Pal, B K; Palacios, J; Palano, A; Palutan, M; Panman, J; Papanestis, A; Pappagallo, M; Parkes, C; Parkinson, C J; Passaleva, G; Patel, G D; Patel, M; Paterson, S K; Patrick, G N; Patrignani, C; Pavel-Nicorescu, C; Pazos Alvarez, A; Pellegrino, A; Penso, G; Pepe Altarelli, M; Perazzini, S; Perego, D L; Perez Trigo, E; Pérez-Calero Yzquierdo, A; Perret, P; Perrin-Terrin, M; Pessina, G; Petrella, A; Petrolini, A; Phan, A; Picatoste Olloqui, E; Pie Valls, B; Pietrzyk, B; Pilař, T; Pinci, D; Plackett, R; Playfer, S; Plo Casasus, M; Polok, G; Poluektov, A; Polycarpo, E; Popov, D; Popovici, B; Potterat, C; Powell, A; Prisciandaro, J; Pugatch, V; Puig Navarro, A; Qian, W; Rademacker, J H; Rakotomiaramanana, B; Rangel, M S; Raniuk, I; Raven, G; Redford, S; Reid, M M; dos Reis, A C; Ricciardi, S; Richards, A; Rinnert, K; Roa Romero, D A; Robbe, P; Rodrigues, E; Rodrigues, F; Rodriguez Perez, P; Rogers, G J; Roiser, S; Romanovsky, V; Rosello, M; Rouvinet, J; Ruf, T; Ruiz, H; Sabatino, G; Saborido Silva, J J; Sagidova, N; Sail, P; Saitta, B; Salzmann, C; Sannino, M; Santacesaria, R; Santamarina Rios, C; Santinelli, R; Santovetti, E; Sapunov, M; Sarti, A; Satriano, C; Satta, A; Savrie, M; Savrina, D; Schaack, P; Schiller, M; Schleich, S; Schlupp, M; Schmelling, M; Schmidt, B; Schneider, O; Schopper, A; Schune, M -H; Schwemmer, R; Sciascia, B; Sciubba, A; Seco, M; Semennikov, A; Senderowska, K; Sepp, I; Serra, N; Serrano, J; Seyfert, P; Shapkin, M; Shapoval, I; Shatalov, P; Shcheglov, Y; Shears, T; Shekhtman, L; Shevchenko, O; Shevchenko, V; Shires, A; Silva Coutinho, R; Skwarnicki, T; Smith, N A; Smith, E; Sobczak, K; Soler, F J P; Solomin, A; Soomro, F; Souza De Paula, B; Spaan, B; Sparkes, A; Spradlin, P; Stagni, F; Stahl, S; Steinkamp, O; Stoica, S; Stone, S; Storaci, B; Straticiuc, M; Straumann, U; Subbiah, V K; Swientek, S; Szczekowski, M; Szczypka, P; Szumlak, T; T'Jampens, S; Teodorescu, E; Teubert, F; Thomas, C; Thomas, E; van Tilburg, J; Tisserand, V; Tobin, M; Tolk, S; Topp-Joergensen, S; Torr, N; Tournefier, E; Tourneur, S; Tran, M T; Tsaregorodtsev, A; Tuning, N; Ubeda Garcia, M; Ukleja, A; Urquijo, P; Uwer, U; Vagnoni, V; Valenti, G; Vazquez Gomez, R; Vazquez Regueiro, P; Vecchi, S; Velthuis, J J; Veltri, M; Viaud, B; Videau, I; Vieira, D; Vilasis-Cardona, X; Visniakov, J; Vollhardt, A; Volyanskyy, D; Voong, D; Vorobyev, A; Voss, H; Wandernoth, S; Wang, J; Ward, D R; Watson, N K; Webber, A D; Websdale, D; Whitehead, M; Wiedner, D; Wiggers, L; Wilkinson, G; Williams, M P; Williams, M; Wilson, F F; Wishahi, J; Witek, M; Witzeling, W; Wotton, S A; Wyllie, K; Xie, Y; Xing, F; Xing, Z; Yang, Z; Young, R; Yushchenko, O; Zangoli, M; Zavertyaev, M; Zhang, F; Zhang, L; Zhang, W C; Zhang, Y; Zhelezov, A; Zhong, L; Zvyagin, A

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},\

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...

CryoSat/SIRAL Cal1 Calibration Orbits

Science.gov (United States)

Scagliola, Michele; Fornari, Marco; Bouffard, Jerome; Parrinello, Tommaso

2017-04-01

The main payload of CryoSat is a Ku band pulsewidth limited radar altimeter, called SIRAL (Synthetic interferometric radar altimeter), that transmits pulses at a high pulse repetition frequency thus making the received echoes phase coherent and suitable for SAR processing. This allows to reach an along track resolution that is significantly improved with respect to traditional pulse-width limited altimeters. Due to the fact that SIRAL is a phase coherent pulse-width limited radar altimeter, a proper calibration approach has been developed. In fact, not only corrections for transfer function, gain and instrument path delay have to be computed (as in previous altimeters), but also corrections for phase (SAR/SARIn) and phase difference between the two receiving chains (SARIN only). Recalling that the CryoSat's orbit has a high inclination of 92° and it is non-sun-synchronous, the temperature of the SIRAL changes continuously along the orbit with a period of about 480 days and it is also function of the ascending/descending passes. By analysis of the CAL1 calibration corrections, it has been verified that the internal path delay and the instrument gain variation measured on the SIRAL are affected by the thermal status of the instrument and as a consequence they are expected to vary along the orbit. In order to gain knowledge on the calibration corrections (i.e. the instrument behavior) as function of latitude and temperature, it has been planned to command a few number of orbits where only CAL1 calibration acquisitions are continuously performed. The analysis of the CAL1 calibration corrections produced along the Calibration orbits can be also useful to verify whether the current calibration plan is able to provide sufficiently accurate corrections for the instrument acquisitions at any latitude. In 2016, the CryoSat/SIRAL Cal1 Calibration Orbits have been commanded two times, a first time the 20th of July 2016 and a second time the 24th of November 2016, and they

Laser measurement of the LumiCal detector displacement

International Nuclear Information System (INIS)

Blocki, J.; Daniluk, W.; Gil, M.; Karbowiak, M.; Moszczynski, A.; Oliwa, K.; Pawlik, B.; Wierba, W.; Zawiejski, L.; Slominski, W.; Suszycki, L.

2006-12-01

The silicon-tungsten calorimeter LumiCal, located in very forward region of the future detector at the International Linear Collider, is proposed for precisely luminosity measurement. One of the requirements to fulfil this task is available information on the actual position of the calorimeter relative to the beam interaction area which should be known with accuracy of a few micrometers. In this paper we discuss the possible solutions for the positioning of the LumiCal electron detector by optical method. The results of the displacement measurement using a laser beam and a CCD camera are described. The measurements were performed on a proof-of-principle basis and achieved the accuracy of about ± 1 μm in x, y and ± μm in z direction. (author)

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.

CubiCal - Fast radio interferometric calibration suite exploiting complex optimisation

Science.gov (United States)

Kenyon, J. S.; Smirnov, O. M.; Grobler, T. L.; Perkins, S. J.

2018-05-01

It has recently been shown that radio interferometric gain calibration can be expressed succinctly in the language of complex optimisation. In addition to providing an elegant framework for further development, it exposes properties of the calibration problem which can be exploited to accelerate traditional non-linear least squares solvers such as Gauss-Newton and Levenberg-Marquardt. We extend existing derivations to chains of Jones terms: products of several gains which model different aberrant effects. In doing so, we find that the useful properties found in the single term case still hold. We also develop several specialised solvers which deal with complex gains parameterised by real values. The newly developed solvers have been implemented in a Python package called CubiCal, which uses a combination of Cython, multiprocessing and shared memory to leverage the power of modern hardware. We apply CubiCal to both simulated and real data, and perform both direction-independent and direction-dependent self-calibration. Finally, we present the results of some rudimentary profiling to show that CubiCal is competitive with respect to existing calibration tools such as MeqTrees.

The effect of pozzolan additions on the shrinkage of cement pastes and mortars during their first hours of age

Directory of Open Access Journals (Sweden)

Ossa, M. Mauricio

1992-03-01

de usos, requiere de una amplia investigación sobre su comportamiento para que los resultados avalen su utilización en proyectos determinados. En este trabajo se estudiaron los cambios volumétricos que se producen en las primeras horas de edad en pastas y morteros de cemento con adición puzolánica, comparándolos entre sí y relacionándolos con otras propiedades de dichos cementos. Para ello se utilizaron cementos fabricados a escala de laboratorio con materias primas provenientes de fábricas nacionales. Se emplearon dos tipos de clínker diferentes, un tipo de yeso y un tipo de puzolana natural, adicionada en proporciones entre 0 y 30%. Se realizaron ensayos para determinar la retracción en pastas y morteros de cemento desde los primeros instantes de su amasado, utilizando para ello moldes dotados con un dispositivo especial diseñado e implementado en el Laboratorio de la Sección Aglomerantes del IDIEM. Los resultados ratifican que, independientemente de las diferentes características de los cementos, la deformación en pastas y morteros presenta, en general, períodos de primera retracción, hinchamiento y segunda retracción. La primera retracción se ve afectada por las condiciones ambientales de humedad, temperatura y viento (evaporación, pero también influye en forma preponderante la superficie específica de los cementos que permite mayor velocidad en las reacciones químicas que ocurren en ese período. También incide aquí una menor o mayor compactación. Por otro lado, se corroboró que a igualdad de finura, los cementos con mayor contenido de C₃A presentan una mayor retracción total que los de bajo contenido. Se pudo constatar, finalmente, que el aumento del contenido de puzolana no afecta directamente en el fenómeno de retracción, pero su presencia puede eventualmente modificar la razón yeso/clínker produciendo variaciones, especialmente en los estados de hinchamiento y segunda retracción.

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

International Nuclear Information System (INIS)

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

2015-01-01

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. 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. The expression of PI3K-p110σ, AKT, ERK, p-AKT and p-ERK were detected by Western blot. The apoptosis rates of CAL-101 group, BTZ group, and combination group were detected by flow cytometry. The 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. 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 significantly blocked the PI3K/AKT and ERK signaling pathway in MCL cells. The combination therapy contributed to the inactivation of NF-κB and AKT in MCL cell lines. However, cleaved caspase-3 was up-regulated after combined treatment. Our study showed that PI3K/p110σ is a novel therapeutic target in MCL, and the underlying mechanism could be the blocking of the PI3K/AKT and ERK signaling pathways. These findings provided a basis for clinical evaluation of CAL-101 and a rationale for its application in combination therapy, particularly with BTZ

TRATAMIENTO DE LODOS DE FONDO DE LAGUNAS FACULTATIVAS CON ESTABILIZACIÓN EN CONDICIONES DE LABORATORIO

Directory of Open Access Journals (Sweden)

Jhon Jairo Feria Diaz

Full Text Available En este artículo se muestran los resultados obtenidos en el proceso de estabilización química de lodos de lagunas de estabilización, mediante la adición de cal hidratada común. Se adicionaron en condiciones controladas de laboratorio, dosis de cal al 5 %, 7 %, 9 %, 10 %, 11 %, 12 % y 15 % a una muestra de lodos de fondo de la laguna primaria del sistema de tratamiento de aguas residuales de la ciudad de Montería, Colombia. Se analizaron la peligrosidad del lodo (corrosividad, inflamabilidad y reactividad y las concentraciones de sulfuros, metales pesados (As, Ba, Cd, Cr, Hg, Ag, Pb, Se, coliformes, salmonella, bacterias mesófilas, áscaris y otros helmintos, antes y después de aplicar una dosis optima al 10%. Con esta dosis se logró controlar la reactividad por sulfuros y cianuros, pero no se redujeron las concentraciones de coliformes y de bacterias mesófilas. Algunos metales pesados (Cd, Cr, Hg, Ag, Pb aumentaron luego de la aplicación de la dosis de cal hidratada, aunque las concentraciones halladas no constituyen peligro ambiental, de acuerdo a la normatividad ambiental vigente.

Aplicaciones prácticas de la espectroscopía de absorción infrarroja en el estudio de los crudos, del clínker y del cemento portland anhidro

OpenAIRE

Vázquez, Tomás

1980-01-01

En la primera parte de este trabajo (*) se trató brevemente y de una manera fundamentalmente práctica el estudio por espectroscopía infrarroja de calizas, arcillas, clínker portland y sus fases constituyentes. En, el presente trabajo finalizará esta exposición con una visión general de algunas posibilidades que tiene la espectroscopía IR en el estudio del cemento portland anhidro, así como el estudio breve de puzolanas, escorias y cenizas volantes, como adiciones activas.

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 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.

DOSAR/CalLab Operations Manual

International Nuclear Information System (INIS)

Bogard, J.S.

2000-01-01

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

ATLAS TileCal Read Out Driver production

International Nuclear Information System (INIS)

Valero, A; Abdallah, J; Castillo, V; Cuenca, C; Ferrer, A; Fullana, E; Gonzalez, V; Higon, E; Poveda, J; Ruiz-MartInez, A; Saez, M A; Salvachua, B; SanchIs, E; Solans, C; Valls, J A

2007-01-01

The production tests of the 38 ATLAS TileCal Read Out Drivers (RODs) are presented in this paper. The hardware specifications and firmware functionality of the RODs modules, the test-bench and the test procedure to qualify the boards are described. Finally the performance results, the temperature studies and high rate tests are shown and discussed

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

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 nets],...

CalCOFI Larvae Counts, Scientific Names DH to EC

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 nets],...

CalCOFI Larvae Counts, Scientific Names TF to U

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 nets],...

CalCOFI Larvae Counts, Scientific Names HJ to ID

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 nets],...

CalCOFI Larvae Counts, Scientific Names AN to AR

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 nets],...

CalCOFI Larvae Counts, Scientific Names SJ to ST

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 nets],...

CalCOFI Larvae Counts, Scientific Names CP to DE

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 nets],...

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 nets],...

CalCOFI Larvae Counts, Scientific Names EV to GN

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 nets],...

CalCOFI Larvae Counts, Scientific Names V to Z

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 nets],...

CalCOFI Larvae Counts, Scientific Names ED to EU

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 nets],...

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 nets],...

CalCOFI Larvae Counts, Scientific Names MB to MO

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 nets],...

CalCOFI Larvae Counts, Scientific Names LJ to MA

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 nets],...

CalCOFI Larvae Counts, Scientific Names AS to BA

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 nets],...

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 nets],...

CalCOFI Larvae Counts, Scientific Names MP to NA

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 nets],...

CalCOFI Larvae Counts, Scientific Names SU to TE

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 nets],...

CalCOFI Larvae Counts, Scientific Names PL to PO

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 nets],...

CalCOFI Larvae Counts, Scientific Names IE to LA

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 nets],...

CalCOFI Larvae Counts, Scientific Names A to AM

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 nets],...

CalCOFI Larvae Counts, Scientific Names HB to HI

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 nets],...

CalCOFI Larvae Counts, Scientific Names OM to OX

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 nets],...

CalCOFI Larvae Counts, Scientific Names Q to SA

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 nets],...

CalCOFI Larvae Counts, Scientific Names PP to PZ

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 nets],...

CalCOFI Larvae Counts, Scientific Names GO to HA

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 nets],...

CalCOFI Larvae Counts, Scientific Names NB to OL

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 nets],...

CalCOFI Larvae Counts, Scientific Names LB to LI

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 nets],...

CalCOFI Larvae Counts, Scientific Names BCE to BZ

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 nets],...

CalCOFI Larvae Counts, Scientific Names CD to CH

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 nets],...

CalCOFI Larvae Counts, Scientific Names OY to PI

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 nets],...

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.

Aplicaciones prácticas de la espectroscopía de absorción infrarroja en el estudio de los crudos, del clínker y del cemento portland anhidro

Directory of Open Access Journals (Sweden)

Vázquez, Tomás

1980-09-01

Full Text Available Not available

En la primera parte de este trabajo (* se trató brevemente y de una manera fundamentalmente práctica el estudio por espectroscopía infrarroja de calizas, arcillas, clínker portland y sus fases constituyentes. En, el presente trabajo finalizará esta exposición con una visión general de algunas posibilidades que tiene la espectroscopía IR en el estudio del cemento portland anhidro, así como el estudio breve de puzolanas, escorias y cenizas volantes, como adiciones activas.

Hot deformation behaviors and processing maps of B{sub 4}C/Al6061 neutron absorber composites

Energy Technology Data Exchange (ETDEWEB)

Li, Yu-Li [School of Materials Science and Engineering, Taiyuan University Of Technology, Taiyuan 030024 (China); Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024 (China); Wang, Wen-Xian, E-mail: Wangwenxian@tyut.edu.cn [School of Materials Science and Engineering, Taiyuan University Of Technology, Taiyuan 030024 (China); Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024 (China); Zhou, Jun [School of Materials Science and Engineering, Taiyuan University Of Technology, Taiyuan 030024 (China); Department of Mechanical Engineering, Pennsylvania State University Erie, The Behrend College, Erie, PA 16563 (United States); Chen, Hong-Sheng [School of Materials Science and Engineering, Taiyuan University Of Technology, Taiyuan 030024 (China); Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024 (China)

2017-02-15

In this study, the hot deformation behaviors of 30 wt.% B{sub 4}C/Al6061 neutron absorber composites (NACs) have been investigated by conducting isothermal compression tests at temperatures ranging from 653 K to 803 K and strain rates from 0.01 to 10 s{sup −1}. It was found that, during hot compression, the B{sub 4}C/Al6061 NACs exhibited a steady flow characteristic which can be expressed by the Zener-Hollomon parameter as a hyperbolic-sine function of flow stress. High average activation energy (185.62 kJ/mol) of B{sub 4}C/Al6061 NACs is noted in current study owing to the high content of B{sub 4}C particle. The optimum hot working conditions for B{sub 4}C/Al6061 NACs are found to be 760–803 K/0.01–0.05 s{sup −1} based on processing map and microstructure evolution. Typical material instabilities are thought to be attributed to void formation, adiabatic shear bands (ASB), particle debonding, and matrix cracking. Finally, the effect of the plastic deformation zones (PDZs) on the microstructure evolution in this 30 wt.% B{sub 4}C/Al6061 composite is found to be very important. - Highlights: •The hot deformation behavior of the 30 wt.% B{sub 4}C/Al6061 NACs was first analyzed. •The 3D efficiency map and the instability map are developed. •The optimum hot working conditions were identified and validated by SEM and TEM. •The hot deformation schematic diagram of 30 wt.% B{sub 4}C/Al6061 NACs is developed.

OxCal: versatile tool for developing paleoearthquake chronologies--a primer

Science.gov (United States)

Lienkaemper, J.J.; Ramsey, C.B.

2009-01-01

Ages of paleoearthquakes (events), i.e., evidence of earthquakes inferred from the geologic record, provide a critical constraint on estimation of the seismic hazard posed by an active fault. The radiocarbon calibration program OxCal (4.0.3 and above; Bronk Ramsey 2007, 2001) provides paleoseismologists with a straightforward but rigorous means of estimating these event ages and their uncertainties. Although initially developed for the chronologic modeling of archaeological data from diverse sources (e.g., radiocarbon, historical knowledge, etc.), OxCal is readily adaptable to other disciplines requiring chronological modeling, such as paleoseismology (Fumal et al. 2002; Lindvall et al. 2002; Kelson et al. 2006; Noriega et al. 2006; Lienkaemper and Williams 2007; Yen et al. 2008).

TileCal TDAQ/DCS communication

CERN Document Server

Solans, C; Arabidze, G; Carneiro Ferreira, B; Sotto-Maior Peralva, B

2007-01-01

This document describes the communication between the TDAQ and DCS systems of the Hadronic Tile Calorimeter detector of the ATLAS experiment, currently under commissioning phase at CERN. It is a further step on the TDAQ and DCS communication for TileCal operation. The aim of the implementation is to increase the robustness and understanding of the detector from the two systems involved. The basic principle observed is that the two systems operate independently in parallel. Hence, the knowledge of the status of the whole detector from each of the two systems is required for further analysis of the archived data.

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......The electronic economy has proliferated during the past decade. Many initiatives are launched in order to support customer's interaction with the company, however, often fragmented. A more holistic approach is provided in this article. The article suggests a business model in the era of electronic...

Caracterización de espumas de pizarra con adiciones de clínquer de cemento

Directory of Open Access Journals (Sweden)

Cambronero, L. E.G.

2007-04-01

Full Text Available The decomposition of constituents of slates under non-oxidizing atmosphere leads to the manufacturing of foams. Thus die pressing at 80MPa of slates powders (particle size <80 microns mixed with a solid agglomerate, allows a green density close to 1,8 g/cm3 . The heating of compacts under N2-5%H2 atmosphere allows to reach a final density of 2,2 g/cm3 at 1050ºC, meanwhile at 1150ºC the compact foaming leads to densities lower than 0,4 g/cm3. Clínquer addition (5% and 10% modifies the foam density and pore size at 1150ºC. It is necessary to increase the sintering temperature up to 1175ºC to achieve densities close to 0,4 g/cm3 when a 10% of Clínquer is added. The foams with Clínquer shows a high pore size and a compression strength within the range of glass foams: 0.4-1.5MPa.

La descomposición de los componentes de la Pizarra durante su calentamiento en condiciones no oxidantes conduce a la obtención de espumas. Así, mediante la compactación en matriz a 80MPa de polvos de Pizarra de menos de 80 μm de tamaño de partícula y con adición de un aglomerante, se obtiene una densidad en verde próxima a 1,8 g/cm3. El calentamiento de estos compactos en atmósfera de N2-5% H2 permite alcanzar densidades de 2,2 g/cm3 a 1100ºC , mientras que a 1150ºC la espumación del compacto conduce a densidades inferiores a 0,4 g/cm3. La adición de Clínquer de cemento Portland (5% y 10% en peso modifica la densidad de la espuma a 1150ºC , teniendo que elevarse la temperatura de sinterización a 1175 ºC para alcanzarse espumas con densidades próximas a 0,4 g/cm3 con un 10% de Clínquer. Estas espumas con Clínquer presentan un elevado tamaño de poro, así como una resistencia a compresión en el intervalo de resistencias de los vidrios espumados: 0,4-1,5MPa.

Soporte alimentario y nutricional en niños con fibrosis quística

Directory of Open Access Journals (Sweden)

Aida Esplugas Montoya

2011-03-01

Full Text Available INTRODUCCIÓN. La fibrosis quística es una enfermedad que se manifiesta en las vías respiratorias, el páncreas y el tracto intestinal. El control nutricional es un aspecto decisivo en el tratamiento de la enfermedad. El objetivo del estudio fue caracterizar un grupo de pacientes que se encontraban en fases de soporte y rehabilitación nutricional. MÉTODOS. Se realizó un estudio prospectivo con 7 pacientes menores de 18 años, que ingresaron para su tratamiento en la unidad especializada en fibrosis quística del Hospital Pediátrico Universitario «William Soler» (La Habana. Se realizaron mediciones antropométricas al ingreso y al egreso, y se clasificó a los niños en desnutrido, de bajo peso y de peso normal. Los valores fueron comparados con las tablas de crecimiento y desarrollo de la población cubana. RESULTADOS. A 3 pacientes se les aplicó una intervención de soporte nutricional y 4 pacientes fueron tratados además con nutrición enteral suplementaria. En la evaluación nutricional se encontró que la distribución porcentual calórica que aportaron los alimentos fue de un 12 % para las proteínas, 37 % para las grasas y 51 % para los carbohidratos. La energía que aportaron los alimentos consumidos ascendió a 4 360 kcal, 134,27 g de proteínas, 177,51 g de grasas y 558,20 g de carbohidratos. CONCLUSIONES. Al aumentar la densidad calórica de los alimentos y aplicar nutrición enteral a los pacientes se obtuvo un incremento de la ganancia ponderal y mejoró el estado nutricional.

An IPMI-compliant control system for the ATLAS TileCal Phase-II Upgrade PreProcessor module

CERN Document Server

Zuccarello, Pedro Diego; The ATLAS collaboration

2016-01-01

Abstract–The electronics of the hadronic calorimeter of the ATLAS detector (TileCal) is being redesigned as part of the works that will lead to the High Luminosity Large Hadron Collider (HL-LHC). TileCal electronics is divided in front and back-end subsystems. While the front-end is inside the detector, the back-end is located off-detector inserted in an ATCA shelf. The main objective of this paper is to describe the work being carried out in the hardware management aspects of the back-end electronics of TileCal.

Cal Poly Apparel Manufacturing Demonstration - Year 3 Final Technical Report

National Research Council Canada - National Science Library

2000-01-01

.... Since the Southern California apparel industry is primarily small businesses producing low volume fashion products, the Cal Poly Demo factory needed to reflect the size and capability of its customer...

Déficit de vitamina B12 asociado con altas dosis de metformina en adultos mayores diabéticos

OpenAIRE

Hugo Sánchez; Dominique Masferrer; Lydia Lera; Estrella Arancibia; Bárbara Ángel; Cecilia Albala

2014-01-01

Introducción: El objetivo del estudio es estimar si el déficit de B12 se asocia con el uso de la metformina en adultos mayores (AM) diabéticos. Métodos: Estudio de casos y controles en AM diabéticos. Los casos (n = 137) se definieron como AM con B12 221 pmol/L. Se definieron 4 categorías de uso de metformina: no usuarios, ≤ 850 mg/día; > 850 y < 2.550 mg/día; ≥ 2.550 mg/día. Se consideró altas dosis de metformina (≥ 2.550 mg/día). Se cal...

Estabilização de solos com adição de cal : um estudo a respeito da reversibilidade das reações que acontecem no solo após a adição de cal

OpenAIRE

Azevedo, André Luis Cairo de

2010-01-01

Visando ampliar o conhecimento sobre a estabilização dos solos com adição de cal, este estudo pretende demonstrar que as reações do solo argiloso com cal podem ser reversíveis. Esta análise simula uma mistura de solo e cal sendo executada inicialmente numa usina, quando do início da obra, antes mesmo da terraplenagem concluída, armazenada durante um período de tempo determinado e posteriormente sendo executada como camada de pavimento. Para isso foram feitos moldados corpos de prova com amost...

Final Report Feasibility Study for the California Wave Energy Test Center (CalWavesm)

Energy Technology Data Exchange (ETDEWEB)

Blakeslee, Samuel Norman [California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States). Inst. for Advanced Technology and Public Policy; Toman, William I. [Protean Wave Energy Ltd., Los Osos, CA (United States); Williams, Richard B. [Leidos Maritime Solutions, Reston, VA (United States); Davy, Douglas M. [CH2M, Sacramento, CA (United States); West, Anna [Kearns and West, Inc., San Francisco, CA (United States); Connet, Randy M. [Omega Power Engineers, LLC, Anaheim, CA (United States); Thompson, Janet [Kearns and West, Inc., San Francisco, CA (United States); Dolan, Dale [California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States); Baltimore, Craig [California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States); Jacobson, Paul [Electric Power Research Inst. (EPRI), Knoxville, TN (United States); Hagerman, George [Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Potter, Chris [California Natural Resources Agency, Sacramento, CA (United States); Dooher, Brendan [Pacific Gas and Electric Company, San Francisco, CA (United States); Wendt, Dean [California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States); Sheppard, Colin [Humboldt State Univ., Arcata, CA (United States); Harris, Andrew [Humboldt State Univ., Arcata, CA (United States); Lawson, W. Graham [Power Delivery Consultants, Inc., Albany, NY (United States)

2017-07-31

The California Wave Energy Test Center (CalWave) Feasibility Study project was funded over multiple phases by the Department of Energy to perform an interdisciplinary feasibility assessment to analyze the engineering, permitting, and stakeholder requirements to establish an open water, fully energetic, grid connected, wave energy test center off the coast of California for the purposes of advancing U.S. wave energy research, development, and testing capabilities. Work under this grant included wave energy resource characterization, grid impact and interconnection requirements, port infrastructure and maritime industry capability/suitability to accommodate the industry at research, demonstration and commercial scale, and macro and micro siting considerations. CalWave Phase I performed a macro-siting and down-selection process focusing on two potential test sites in California: Humboldt Bay and Vandenberg Air Force Base. This work resulted in the Vandenberg Air Force Base site being chosen as the most favorable site based on a peer reviewed criteria matrix. CalWave Phase II focused on four siting location alternatives along the Vandenberg Air Force Base coastline and culminated with a final siting down-selection. Key outcomes from this work include completion of preliminary engineering and systems integration work, a robust turnkey cost estimate, shoreside and subsea hazards assessment, storm wave analysis, lessons learned reports from several maritime disciplines, test center benchmarking as compared to existing international test sites, analysis of existing applicable environmental literature, the completion of a preliminary regulatory, permitting and licensing roadmap, robust interaction and engagement with state and federal regulatory agency personnel and local stakeholders, and the population of a Draft Federal Energy Regulatory Commission (FERC) Preliminary Application Document (PAD). Analysis of existing offshore oil and gas infrastructure was also performed

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.

João Pandiá Calógeras

Directory of Open Access Journals (Sweden)

Sílvio Fernandes Lopes

1961-12-01

Full Text Available A honra de ocupar uma cadeira numa instituição cientí-fica de renome, não é maior, decerto, do que aquela de o fazer à sombra de um vulto de primeira grandeza, a lhe servir de patrono. Dupla honra e dupla responsabilidade, portanto, o que neste momento me toca, pois se a Cadeira pertence ao Instituto Histórico e Geográfico de Santos, entidade que digni-fica a cultura da nossa terra e da nossa gente em vinte e dois anos de trajetória científica e social, a invocação pertence a uma das maiores figuras do Brasil República, o grande Caló-geras, que Afonso de Taunay chamou de "gigante do pensa-mento brasileiro", quando, em discurso de saudação a Rodol-fo Garcia na Academia Brasileira de Letras, verberava que, naquela Academia ilustre, não estivessem três gigantes do pen-samento brasileiro: Pandiá Calógeras, Martim Francisco e Ca-pistrano de Abreu.

ATLAS TileCal LVPS Upgrade Hardware and Testing

CERN Document Server

Hibbard, Michael James; The ATLAS collaboration; Hadavand, Haleh Khani

2018-01-01

UTA (University of Texas at Arlington) has been designing and producing new testing stations to ensure the reliability and quality of new TileLVPS (Low Voltage Power Supplies), also produced at UTA, which will power the next generation of upgraded hardware in the TileCal (Tile Calorimeter) system of ATLAS at CERN. UTA has produced two new types of testing stations, which build upon the previous generation of testing stations used in the initial production of the TileCal system. The first station is the Initial Test Station, and quickly quantifies a multitude of performance metrics of a LVPS. We have developed our own PC based program which graphically display and records onto file these metrics. A few notable metrics we are measuring are the system clock and its jitter. Excessive clock jitter in LVPS can affect system stability and derate the working range of the system duty cycle. This station also verifies protection circuitry of LVPS, which protects it from over temperature, current and voltage. The second...

Cal/Val activities for DubaiSat-2 performance assessment

Science.gov (United States)

Bushahab, A.; Al-Mansoori, S.; Al-Suwaidi, K.; Al Matroushi, Hessa; Al-Tunaiji, E.; Al Shamsi, Meera

2014-10-01

Emirates Institution for Advanced Science and Technology (EIAST) was established by the Dubai Government in 2006. After three years of working together with Satrec Initiative (South Korea), EIAST was able to launch DubaiSat-1 on the 29th of July 2009. Building on the success of DubaiSat-1 and the roll out of the knowledge transfer program, UAE engineers were involved in almost 70% of the total build and design of DubaiSat-2. Targeting the commercial market, DubaiSat-2 was launched on the 21st of November 2013 for capturing 1-meter resolution images. The 1st Cal/Val phase was the most critical phase in the satellite life-time, where most of the initial measurements took place. This phase extended over the period of 25/11/2013 till 12/12/2013. Moreover, this phase included most of the relative calibration tasks, color balancing and band matching. 2nd Cal/Val phase included most of the debugging and the pointing accuracy calibration tests. This phase extended over the period of 11/02/2014 till 09/03/2014. This phase emphasized on the calibration of the pointing accuracy. The 3rd Cal/Val phase included fine tuning for the Gyro system to further increase the stability of the satellite and thus improve the pointing accuracy. Moreover, new techniques were implemented to the Pan-Sharpening and to the MTF compensation procedures to enhance the final product. This phase extended over the period of 04/05/2014 till 21/05/2014.

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

Directory of Open Access Journals (Sweden)

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.

ATLAS TileCal submodule B-field measurement

International Nuclear Information System (INIS)

Budagov, Yu.A.; Fedorenko, S.B.; Kalinichenko, V.V.; Lomakin, Yu.F.; Vorozhtsov, S.B.; Nessi, M.

1997-01-01

The work was done to cross check of the previous measurement done at CERN and to simulate the magnetic structure in the vicinity of the symmetry plane of the TileCal. To perform magnetic measurements for submodule the magnet E2 was chosen. The magnetometer used in the magnetic test of the submodule consists of Hall current supply and Hall voltage measuring device. The indium antimonide Hall probe used in this measurement is a model PKhE 606. Experimental set-up provides a true measurement accuracy of order ± 1%. External magnetic field measurements were conducted at the outer surface of the submodule. Two levels of the external field were applied: 108 Gs and 400 Gs. The result of this measurement in general confirms the data, obtained at CERN, but the shielding capability of the submodule under consideration was ∼ 20% higher than there. The field at the tile location is < 150 Gs up to the external field level 500 Gs and the tile field grows much less than the external field level in this range. The data obtained in this measurement could be used as a benchmark when producing a computer model of the TileCal magnetic field distribution

Sobre la determinación de la calidad de las escorias de horno alto y de las puzolanas

Directory of Open Access Journals (Sweden)

Wittekindt, W.

1964-06-01

Full Text Available Not availableEn la molienda de clínker portland con escoria de horno alto para obtener cemento portland de hierro y cemento de horno alto, uno está más seguro de la calidad del clínker que de la escoria. El análisis del clínker y el cálculo de los minerales de clínker, facilitado por este análisis, nos dice ya, en gran parte, si se puede fabricar con este clínker un cemento portland de mayor o menor resistencia, si pueden esperarse buenas resistencias iniciales o si hay que contar más bien con mayores resistencias finales, cual es la resistencia del cemento a los sulfatos, etc.

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.

Producción de huevo, calidad del cascarón y rentabilidad en gallinas de primer ciclo con niveles de calcio y fósforo disponible

Directory of Open Access Journals (Sweden)

Víctor Manuel Valdés Narváez

2011-01-01

Full Text Available Para evaluar el efecto del calcio y fósforo en la calidad del cascarón del huevo se realizó un experimento con 480 gallinas Hy- Line W-36. Se usaron tres niveles de calcio (Ca (3.2, 4.2 y 5.2 % y cuatro de fósforo disponible (Pd (0.15, 0.20, 0.25 y 0.30 %. Se encontró interacción (P<0.05 del Ca y Pd en consumo de alimento (CAL y masa de huevo (MH. Con el nivel de Ca de 5.2 % y de Pd (0.15 % disminuyó el CAL (96.7 g y MH (48.7 g. El porcentaje de postura y MH fueron menores (P<0.05 con 0.15 % que con 0.3 % de Pd. La conversión alimenticia se afectó (P<0.05 por el nivel de Pd, obteniendo la mejor con 0.3 % (1.94, seguida por 0.20 % (1.96, 0.15 % (1.98, y 0.25 % (1.99. El peso del huevo fue mayor (P<0.05 en 0.7 y 0.8 g con 3.2 % que con 4.2 y 5.2 % de Ca, respectivamente. La gravedad específica se mejoró (P<0.05 al incrementar el calcio (1.080 vs 1.081 y 1.082 en la dieta. Se concluye que para buena calidad del cascarón es necesario 4.2 % de Ca, pero se debe incrementar de manera proporcional el fósforo disponible. El nivel de 0.15 % de fósforo disponible no es suficiente para obtener buena producción de huevo y conversión alimenticia.

Diseño del sistema para extracción de gases de un horno para cal

OpenAIRE

Vega Basurto, Carlos W.; Martinez Lozano, Ernesto Rolando

2009-01-01

Esta tesis es realizada en una empresa distribuidora de material no metálico ubicada en la ciudad de Guayaquil en el kilómetro 12 ½ Vía a la costa. Es una planta que tiene dos procesos fundamentales que son obtención de Cal y de procesamiento de áridos (piedra y arena). Este trabajo se enfoca en la parte del proceso de obtención de Cal que tiene una gran demanda en estos momentos en el país. La empresa posee un horno de una capacidad de 80 Toneladas Por Día de Cal pero no logra cubrir to...

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.

VALORACIÓN Y EFECTOS PUZOLÁNICOS DEL MATERIAL VOLCÁNICO DEL PURACÉ

Directory of Open Access Journals (Sweden)

Diana Marcela Burgos Galindo

Full Text Available En este artículo se presentan los resultados experimentales de caracterización y evaluación puzolánica del material volcánico del Puracé (MVP. El MVP fue analizado mediante microscopía electrónica de barrido, fluorescencia de rayos X, difracción de rayos X, petrografía de secciones delgadas, análisis termo-gravimétricos, entre otros. La reactividad puzolánica fue evaluada por medio del Índice de Actividad Puzolánica y el ensayo de Frattini. Además, se evaluó el efecto de la incorporación del MVP en la resistencia a compresión de morteros donde el cemento Portland se remplazó por MVP en un rango del 0-40 %. Los resultados demostraron que el MVP presentó todas las características para ser considerado una puzolana natural y su porcentaje óptimo de incorporación como puzolana en remplazo del cemento es del 10 %, pero el diseño demostró que puede incorporarse hasta un 20 % con una pequeña desviación en la resistencia media reportada por el diseño.

Antarctic Surface Reflectivity Measurements from the ANITA-3 and HiCal-1 Experiments

Science.gov (United States)

Gorham, P. W.; Allison, P.; Banerjee, O.; Beatty, J. J.; Belov, K.; Besson, D. Z.; Binns, W. R.; Bugaev, V.; Cao, P.; Chen, C.; Chen, P.; Clem, J. M.; Connolly, A.; Dailey, B.; Dasgupta, P.; Deaconu, C.; Cremonesi, L.; Dowkontt, P. F.; Fox, B. D.; Gordon, J.; Hill, B.; Hupe, R.; Israel, M. H.; Jain, P.; Kowalski, J.; Lam, J.; Learned, J. G.; Liewer, K. M.; Liu, T. C.; Matsuno, S.; Miki, C.; Mottram, M.; Mulrey, K.; Nam, J.; Nichol, R. J.; Novikov, A.; Oberla, E.; Prohira, S.; Rauch, B. F.; Romero-Wolf, A.; Rotter, B.; Ratzlaff, K.; Russell, J.; Saltzberg, D.; Seckel, D.; Schoorlemmer, H.; Stafford, S.; Stockham, J.; Stockham, M.; Strutt, B.; Tatem, K.; Varner, G. S.; Vieregg, A. G.; Wissel, S. A.; Wu, F.; Young, R.

The primary science goal of the NASA-sponsored ANITA project is measurement of ultra-high energy neutrinos and cosmic rays, observed via radio-frequency signals resulting from a neutrino or cosmic ray interaction with terrestrial matter (e.g. atmospheric or ice molecules). Accurate inference of the energies of these cosmic rays requires understanding the transmission/reflection of radio wave signals across the ice-air boundary. Satellite-based measurements of Antarctic surface reflectivity, using a co-located transmitter and receiver, have been performed more-or-less continuously for the last few decades. Our comparison of four different reflectivity surveys, at frequencies ranging from 2 to 45GHz and at near-normal incidence, yield generally consistent maps of high versus low reflectivity, as a function of location, across Antarctica. Using the Sun as an RF source, and the ANITA-3 balloon borne radio-frequency antenna array as the RF receiver, we have also measured the surface reflectivity over the interval 200-1000MHz, at elevation angles of 12-30∘. Consistent with our previous measurement using ANITA-2, we find good agreement, within systematic errors (dominated by antenna beam width uncertainties) and across Antarctica, with the expected reflectivity as prescribed by the Fresnel equations. To probe low incidence angles, inaccessible to the Antarctic Solar technique and not probed by previous satellite surveys, a novel experimental approach (“HiCal-1”) was devised. Unlike previous measurements, HiCal-ANITA constitute a bi-static transmitter-receiver pair separated by hundreds of kilometers. Data taken with HiCal, between 200 and 600MHz shows a significant departure from the Fresnel equations, constant with frequency over that band, with the deficit increasing with obliquity of incidence, which we attribute to the combined effects of possible surface roughness, surface grain effects, radar clutter and/or shadowing of the reflection zone due to Earth

Impact of CALS on Electronic Publishing Systems and Users.

Science.gov (United States)

Beazley, William G.

1990-01-01

The U.S. Department of Defense has begun using its buying power to enforce standards on the vendors and contractors of automatic data processing hardware and software. An example of this, the Computer-Aided Acquisition and Logistic Support (CALS) program, is described, and how it will affect electronic publishing systems is discussed. (five…

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...

Firmware Development for the ATLAS TileCal sROD

CERN Document Server

Moreno Marti, Pablo; The ATLAS collaboration; Valero, Alberto

2015-01-01

TileCal is the central hadronic calorimeter of the ATLAS experiment at the Large Hadron Collider (LHC) at CERN. A main upgrade of the LHC (also called Phase-II) is planned in order to increase the instantaneous luminosity in 2022. At the TileCal level, the upgrade involves the redesign of the complete read-out architecture, affecting both the front-end and the back-end electronics. In the new read-out architecture, the front-end electronics will transmit digitized information of the full detector to the back-end system every single bunch-crossing. Thus, the back-end system must provide digital calibrated information to the first level of trigger. Having all detector data per bunch crossing in the back-end will increase the precision and granularity of the trigger information, improving this way the trigger efficiencies. A reduced part of the detector, 1/256 of the total, will be equipped with the new electronics during 2015 to evaluate the proposed architecture in real conditions in the so-called “demonstra...

Firmware Development for the ATLAS TileCal sROD

CERN Document Server

Moreno Marti, Pablo; The ATLAS collaboration; Valero, Alberto

2015-01-01

TileCal is the central hadronic calorimeter of the ATLAS experiment at the Large Hadron Collider (LHC) at CERN. A main upgrade of the LHC (also called Phase-II) is planned in order to increase the instantaneous luminosity in 2022. For TileCal, the upgrade involves the redesign of the complete read-out architecture, affecting both the front-end and the back-end electronics. In the new read-out architecture, the front-end electronics will transmit digitized information of the full detector to the back-end system every single bunch-crossing. Thus, the back-end system must provide digital calibrated information to the first level of trigger. Having all detector data per bunch crossing in the back-end will increase the precision and granularity of the trigger information, improving this way the trigger efficiencies. A reduced part of the detector, 1/256 of the total, will be equipped with the new electronics during 2016 to evaluate the proposed architecture in real conditions in the so-called “demonstrator proje...

Retooling CalEnviroScreen: Cumulative Pollution Burden and Race-Based Environmental Health Vulnerabilities in California

Science.gov (United States)

2018-01-01

The California Community Environmental Health Screening Tool (CalEnviroScreen) advances research and policy pertaining to environmental health vulnerability. However, CalEnviroScreen departs from its historical foundations and comparable screening tools by no longer considering racial status as an indicator of environmental health vulnerability and predictor of cumulative pollution burden. This study used conceptual frameworks and analytical techniques from environmental health and inequality literature to address the limitations of CalEnviroScreen, especially its inattention to race-based environmental health vulnerabilities. It developed an adjusted measure of cumulative pollution burden from the CalEnviroScreen 2.0 data that facilitates multivariate analyses of the effect of neighborhood racial composition on cumulative pollution burden, net of other indicators of population vulnerability, traffic density, industrial zoning, and local and regional clustering of pollution burden. Principal component analyses produced three new measures of population vulnerability, including Latina/o cumulative disadvantage that represents the spatial concentration of Latinas/os, economic disadvantage, limited English-speaking ability, and health vulnerability. Spatial error regression analyses demonstrated that concentrations of Latinas/os, followed by Latina/o cumulative disadvantage, are the strongest demographic determinants of adjusted cumulative pollution burden. Findings have implications for research and policy pertaining to cumulative impacts and race-based environmental health vulnerabilities within and beyond California. PMID:29659481

Retooling CalEnviroScreen: Cumulative Pollution Burden and Race-Based Environmental Health Vulnerabilities in California

Directory of Open Access Journals (Sweden)

Raoul S. Liévanos

2018-04-01

Full Text Available The California Community Environmental Health Screening Tool (CalEnviroScreen advances research and policy pertaining to environmental health vulnerability. However, CalEnviroScreen departs from its historical foundations and comparable screening tools by no longer considering racial status as an indicator of environmental health vulnerability and predictor of cumulative pollution burden. This study used conceptual frameworks and analytical techniques from environmental health and inequality literature to address the limitations of CalEnviroScreen, especially its inattention to race-based environmental health vulnerabilities. It developed an adjusted measure of cumulative pollution burden from the CalEnviroScreen 2.0 data that facilitates multivariate analyses of the effect of neighborhood racial composition on cumulative pollution burden, net of other indicators of population vulnerability, traffic density, industrial zoning, and local and regional clustering of pollution burden. Principal component analyses produced three new measures of population vulnerability, including Latina/o cumulative disadvantage that represents the spatial concentration of Latinas/os, economic disadvantage, limited English-speaking ability, and health vulnerability. Spatial error regression analyses demonstrated that concentrations of Latinas/os, followed by Latina/o cumulative disadvantage, are the strongest demographic determinants of adjusted cumulative pollution burden. Findings have implications for research and policy pertaining to cumulative impacts and race-based environmental health vulnerabilities within and beyond California.

Retooling CalEnviroScreen: Cumulative Pollution Burden and Race-Based Environmental Health Vulnerabilities in California.

Science.gov (United States)

Liévanos, Raoul S

2018-04-16

The California Community Environmental Health Screening Tool (CalEnviroScreen) advances research and policy pertaining to environmental health vulnerability. However, CalEnviroScreen departs from its historical foundations and comparable screening tools by no longer considering racial status as an indicator of environmental health vulnerability and predictor of cumulative pollution burden. This study used conceptual frameworks and analytical techniques from environmental health and inequality literature to address the limitations of CalEnviroScreen, especially its inattention to race-based environmental health vulnerabilities. It developed an adjusted measure of cumulative pollution burden from the CalEnviroScreen 2.0 data that facilitates multivariate analyses of the effect of neighborhood racial composition on cumulative pollution burden, net of other indicators of population vulnerability, traffic density, industrial zoning, and local and regional clustering of pollution burden. Principal component analyses produced three new measures of population vulnerability, including Latina/o cumulative disadvantage that represents the spatial concentration of Latinas/os, economic disadvantage, limited English-speaking ability, and health vulnerability. Spatial error regression analyses demonstrated that concentrations of Latinas/os, followed by Latina/o cumulative disadvantage, are the strongest demographic determinants of adjusted cumulative pollution burden. Findings have implications for research and policy pertaining to cumulative impacts and race-based environmental health vulnerabilities within and beyond California.

El rol de la depresión en el déficit cognitivo del paciente con síndrome de fatiga crónica

OpenAIRE

Santamarina-Pérez, P.; Freniche, V.; Eiroá Orosa, Francisco José; Llobet, G.; Sáez, N.; Alegre Martín, José; Jacas, C.

2011-01-01

Fundamento y objetivo Analizar el rol de la depresión en el déficit cognitivo del paciente con síndrome de fatiga crónica (SFC). Pacientes y método Un total de 57 mujeres con diagnóstico de SFC fueron evaluadas mediante tests neuropsicológicos que incluían medidas de atención (CalCap, Control Mental del WMS-III, PASAT, dígitos directos e inversos del WAIS-III y symbol digit modalities test [SDMT]) funciones ejecutivas (test Stroop, Trail Making Test [TMT A y B], FAS y Torre de Londres), memor...

Prevalencia de malnutrición en pacientes con discapacidad intelectual institucionalizados

Directory of Open Access Journals (Sweden)

Rubén A. Bronberg

2011-02-01

Full Text Available Los pacientes con discapacidad intelectual (DI pueden presentar un riesgo elevado de padecer alteraciones nutricionales. Nuestro objetivo fue determinar la prevalencia de malnutrición en pacientes institucionalizados con DI, en la Colonia Nacional Montes de Oca, provincia de Buenos Aires, Argentina. Se realizó valoración antropométrica transversal mediante peso (kg y talla (cm en 614 individuos (352 varones y 262 mujeres. Se determinó IMC y la prevalencia de bajo peso, sobrepeso y obesidad por sexo y tipo de DI: leve, moderada y grave. Independientemente del sexo, las prevalencias de bajo peso, sobrepeso y obesidad fueron del 2.9%, 30% y 27.7% respectivamente. Sin considerar el grupo de DI, en mujeres se observó mayor prevalencia de obesidad (41.2% y en varones de sobrepeso (34.7%. Teniendo en cuenta el grado de DI e independientemente del sexo se observó mayor prevalencia de bajo peso en DI grave y de sobrepeso y obesidad en DI leve. Ninguno de los pacientes con DI leve presentó bajo peso. Teniendo en cuenta el sexo y el grupo de DI las mayores prevalencias de bajo peso y sobrepeso se hallaron en varones con DI leve, (7% y 38.4% respectivamente y de obesidad en mujeres con DI moderada (44%. Los resultados obtenidos indicarían la importancia del control del ingreso calórico y gasto energético de adultos con DI, prestando especial atención a las condiciones de vida y a los desordenes alimentarios en relación al grado de DI y a sus múltiples discapacidades asociadas.

Dijk- en oeverval aan den cal. Willem Annapolder (Gem. Kapelle)

NARCIS (Netherlands)

Verhagen, H.J.

1936-01-01

Foto's van de aanleg van de dijk- en oeverval aan den cal. Willem Annapolder (Gem. Kapelle) 3. Linkerhelft dijkval Willem Annapolder. 30 Dec. 1936 4. Rechtehelft dijkval Willem Annapolder. 30 Dec. 1936 5. Overzicht dijkval Willem Annaolder. 30 Dec. 1936 6. Kleikisting binnendijks aangebacht. 14/15

Cinética de fermentación y degradabilidad ruminal in vitro de dietas con diferente fuente de nitrógeno

Directory of Open Access Journals (Sweden)

Carlos Aguirre Valverde

2017-12-01

Full Text Available El objetivo de este trabajo fue determinar la cinética de fermentación y degradabilidad ruminal in vitro de dietas con diferente fuente de nitrógeno para alimentación de rumiantes. Se formularon tres dietas (D con diferentes fuentes de nitrógeno D1 (harina de pescado, D2 (pasta de soya y D3 (urea, estas fueron iso-calóricas con 2900 kilocalorías de energía digestible en materia seca (kcal ED/MS e iso-proteícas 13% proteína bruta (PB. Los periodos de incubación utilizados fueron 0, 2, 4, 8, 12, 24, 48 y 72 horas. En la evolución del Ph en la cinética ruminal de las tres dietas con diferentes fuentes de nitrógenos, se puede determinar que la D3 y D1 registraron el mayor pH (P

Cal Poly Apparel Manufacturing Demonstration - Year 4 and 5 Final Technical Report

National Research Council Canada - National Science Library

2001-01-01

.... Since the Southern California apparel industry is primarily small businesses producing low volume fashion products, the Cal Poly Demo factory needed to reflect the size and capability of its customer...

Estudo de argamassa à base de cal e metacaulim para intervenções em revestimento das edificações históricas

OpenAIRE

Souza, Juliana Santa Cruz

2013-01-01

O objetivo deste trabalho é caracterizar argamassas a base de cal com teores diferenciados de metacaulim para a restauração de revestimento nas edificações históricas. Confrontou-se cinco traços de argamassa à base de cal, metacaulim e mistura binária de agregado miúdo, sendo mantida a proporção de ligante e agregado em massa constante 1:3. Os traços possuem modificação na proporção de cal e metacaulim, sendo a cal substituída em massa por metacaulim nas porcentagens de 0%, ...

Influência de calços na orientação postural de indivíduos com escoliose idiopática

Directory of Open Access Journals (Sweden)

Dalva Minonroze Albuquerque Ferreira

Full Text Available INTRODUÇÃO: A relação entre a orientação dos segmentos e os ajustes que podem ser desencadeados por calços e palmilhas em pacientes escolióticos durante a manutenção da posição ortostática é pouco conhecida. OBJETIVO: Verificar alterações estáticas e associadas com mudanças unilaterais de calços na orientação postural de indivíduos com escoliose idiopática. MATERIAIS E MÉTODOS: Grupo experimental com dez indivíduos com escoliose idiopática com curva dupla (menor 10° e grupo controle com dez indivíduos sem escoliose (faixa etária de 13 a 24 anos. Participantes foram filmados na posição ortostática sem calço, com calço baixo (1 cm e com calço alto (3 cm; estes foram colocados sob o pé direito e pé esquerdo dos indivíduos. Em cada condição, o participante manteve a posição estática durante 15 segundos e marcadores refletivos foram colocados em pontos anatômicos específicos. Foram calculados ângulos posturais: torácico alto; torácico médio; toracolombar e lombar e ângulos segmentares: ombro; escápula; pelve e joelho. RESULTADOS: Na condição sem calço, diferenças foram observadas entre grupos para os ângulos posturais toracolombar e lombar e para o ângulo segmentar do ombro. Com calço baixo e alto, sob o pé direito, diferença foi observada entre calços para os ângulos lombar, da pelve e do joelho. Com calço baixo e alto, sob o pé esquerdo, diferença foi observada entre grupos para o ângulo toracolombar e entre calços para os ângulos da pelve e do joelho. CONCLUSÕES: A utilização de calço promove reorientação nas regiões mais baixas da coluna e nos segmentos da pelve e do joelho. Estes resultados sugerem que nas escolioses duplas, manipulação da base de apoio modifica o alinhamento do tronco que pode provocar reorganização das estruturas e busca de um novo arranjo entre segmentos em indivíduos com escoliose idiopática.

Is the clay "exchange capacity" concept wholly applicable to pozzolans?

Directory of Open Access Journals (Sweden)

Talero, R.

2004-12-01

sulphate-resistant, and - where the Portland cement/pozzolan ratio was 60/40. Under these circumstances the behaviour of one of the pozzolans studied may, in one sense, be described to be ''more apparent than real ".

Una de las propiedades más características de las arcillas es su "capacidad de cambio catiónico", o simplemente su "capacidad de cambio ". Mediante este trabajo se ha logrado demostrar que algunas puzolanas naturales y artificiales, participan, en mayor o menor medida, y por diferentes causas, de esa característica, si bien, de una forma parcial. Ello es debido a que, a diferencia de las arcillas, su estado físico-químico original, vítreo y/o amorfo en su mayor parte, se puede ver afectado por lo común durante su hidratación con cemento Portland hasta llegar incluso a desaparecer prácticamente, al transformarse en múltiples y variados compuestos más o menos cristalinos nuevos. Para ello se utilizaron 142 cementos de mezcla, 8 industriales, y el resto, 134, preparados en el laboratorio mediante mezcla de cementos Portland y 3 puzolanas naturales (O, A y C y artificiales (CV-19, CV-l0 y M en distintas proporciones porcentuales en masa. Todos ellos se analizaron mediante el ensayo de Frattini a las edades de 7 y/o 28 días, habiéndose determinado en su fase líquida correspondiente, no sólo sus contenidos de [OH]^- y [CaO], sino también sus correspondientes contenidos porcentuales de Na⁺y K⁺ expresados como Na₂O y K₂O, respectivamente: aunque estos últimos únicamente se le determinaron a los 45 cementos de mezcla más significativos para el objetivo de este trabajo. Por último, las tres puzolanas naturales tuvieron que ser analizadas por DRX para conocer también su composición mineralógica. Los resultados obtenidos han confirmado el objetivo que se pretendía demostrar así como también, que en tanto en cuanto una puzolana posea mayores contenidos de elementas (alcalinos Na

EXTRUIDOS DE AlFe-PILC EN LA OXIDACIÓN CATALÍTICA DE FENOL

Directory of Open Access Journals (Sweden)

Nancy R. Sanabria

2010-09-01

Full Text Available Extruidos de AlFe-PILC con forma de cilindro compacto se emplearon como catalizadores en la reacción de oxidación de fenol en medio acuoso. Debido a que el proceso de elaboración de los extruidos con fase activa AlFe-PILC afecta la actividad intrínseca del catalizador, en este trabajo se determinaron la resistencia mecánica y la estabilidad química del catalizador conformado, así como las limitaciones difusionales por efecto de la aglomeración. Los extruidos se elaboraron con la proporción másica 42/28/30 de arcilla intercalada con AlFe, aglomerante (mezcla 50/50 de bentonita sódica y cálcica y agua, exhibiendo elevada resistencia mecánica y estabilidad química a la inmersión en agua. Los extruidos de AlFe-PILC presentaron un factor de efectividad menor a 1; por tanto, la reacción se encuentra limitada por la difusión intrapartícula.

The impact of BeamCal performance at different international linear ...

Indian Academy of Sciences (India)

Abstract. The ILC accelerator parameters and detector concepts are still under discus- sion 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 ...

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

...., Rymer Foods, Inc. Stratus Services Group, Inc., Sun Cal Energy, Inc., Sun Motor International, Inc... current and accurate information concerning the securities of Sun Cal Energy, Inc. because it has not... Sun Motor International, Inc. because it has not filed any periodic reports since the period ended...

Oceanographic profile data using bottle collected during CalCOFI cruises, North Pacific Ocean, 2015-04 to 2015-11 (NCEI Accession 0162193)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Bottle data collected during CalCOFI cruises 1504, 1507, and 1511, April 2015 - November 2015. The California Cooperative Oceanic Fisheries Investigations (CalCOFI)...

Study of TileCal scintillator irradiation using the minimum bias integrators

CERN Document Server

AUTHOR|(INSPIRE)INSPIRE-00387867; 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 $^{137}$Cs 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 monitoring of 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 scintillator irradiation using the data taken in 2012 and 2015 that correspond to about 22 fb$^{−1}$ and 4 fb$^{−1}$ of integrated luminosity, respectively. Finally, the response variation for an irradiated cell has been studied comb...

A Full Slice Test Version of a Tentative Upgraded Readout System for TileCal

CERN Document Server

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

2011-01-01

The upgrade plans on the ATLAS hadronic calorimeter (TileCal) include the full readout of all data to the counting room. In order to study functional requirements of the future upgraded TileCal readout system we have assembled a minimal TDAQ slice. The aim is to implement a tentative readout chain for TileCal, starting with a newly developed 3-in-1 FE-board from University of Chicago and ending with the storage of triggered data on a PC. Later we will use PMT pulses, amplified and shaped by the 3-in-1 board, as a data source. However, for simplicity we start by using well defined calibration pulses also generated by the 3-in-1 board. The pulses are sampled by a 12 bit ADC, which is connected to an ML605 evaluation board from XILINX. These boards emulate the new on-detector electronics. The ML605 communicates via two 5Gb/s optical links with a Virtex-6 FPGA development board from HighTech Global which emulates the off-detector electronics. The off-detector board is situated in a PC and uses PCIe for readout an...

Effect of three natural pozzolans in portland cement hydration

Directory of Open Access Journals (Sweden)

Rahhal, V.

2003-03-01

que la actividad puzolánica de las adiciones y los efectos de aceleración o retraso de las reacciones de hidratación, varían según la composición del cemento portland con el cual se utilicen. Los efectos de dilución, estimulación, aceleración o retraso de las reacciones, el comportamiento a modo de focos de disipación del calor y la actividad puzolánica dependen de los porcentajes de las puzolanas naturales en las mezclas y de la edad considerada.

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

International Nuclear Information System (INIS)

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

Calázio e características demográficas dos portadores em uma amostra populacional

Directory of Open Access Journals (Sweden)

Marjorie Fornazier do Nascimento

2015-08-01

Full Text Available RESUMO Objetivo: Apresentar a frequência de ocorrência do calázio em uma amostra populacional, assim como as características de seus portadores. Métodos: Estudo transversal utilizando amostra populacional aleatorizada, realizado nos anos 2004/2005, na região centro-oeste do estado de São Paulo. Os participantes foram avaliados segundo variáveis demográficas e exame oftalmológico. Resultados: A frequência de ocorrência do calázio foi de 1,56%, sendo mais frequente em mulheres, portadores de astigmatismo ou hipermetropia de pequenos graus, com grande variação de idade de acometimento. Foi necessária prescrição de correção óptica e cirurgia em número expressivo de casos. Conclusão: O calázio tem baixa frequência de ocorrência na população geral. Ocorre predominantemente em mulheres e há associação importante com ametropia.

Evaluation of IsoCal geometric calibration system for Varian linacs equipped with on-board imager and electronic portal imaging device imaging systems.

Science.gov (United States)

Gao, Song; Du, Weiliang; Balter, Peter; Munro, Peter; Jeung, Andrew

2014-05-08

The purpose of this study is to evaluate the accuracy and reproducibility of the IsoCal geometric calibration system for kilovoltage (kV) and megavoltage (MV) imagers on Varian C-series linear accelerators (linacs). IsoCal calibration starts by imaging a phantom and collimator plate using MV images with different collimator angles, as well as MV and kV images at different gantry angles. The software then identifies objects on the collimator plate and in the phantom to determine the location of the treatment isocenter and its relation to the MV and kV imager centers. It calculates offsets between the positions of the imaging panels and the treatment isocenter as a function of gantry angle and writes a correction file that can be applied to MV and kV systems to correct for those offsets in the position of the panels. We performed IsoCal calibration three times on each of five Varian C-series linacs, each time with an independent setup. We then compared the IsoCal calibrations with a simplified Winston-Lutz (WL)-based system and with a Varian cubic phantom (VC)-based system. The maximum IsoCal corrections ranged from 0.7 mm to 1.5 mm for MV and 0.9 mm to 1.8 mm for kV imagers across the five linacs. The variations in the three calibrations for each linac were less than 0.2 mm. Without IsoCal correction, the WL results showed discrepancies between the treatment isocenter and the imager center of 0.9 mm to 1.6 mm (for the MV imager) and 0.5 mm to 1.1 mm (for the kV imager); with IsoCal corrections applied, the differences were reduced to 0.2 mm to 0.6 mm (MV) and 0.3 mm to 0.6 mm (kV) across the five linacs. The VC system was not as precise as the WL system, but showed similar results, with discrepancies of less than 1.0 mm when the IsoCal corrections were applied. We conclude that IsoCal is an accurate and consistent method for calibration and periodic quality assurance of MV and kV imaging systems.

Domesticación animal y primeras prácticas ganaderas en el noreste peninsular (5500-4500 cal BC). Integración de los análisis bioquímicos en arqueozoología

OpenAIRE

Navarrete Belda, Vanessa

2017-01-01

En el presente trabajo de tesis doctoral se aborda la problemática de la dinámica del proceso de domesticación animal y las prácticas ganaderas iniciales en el extremo más occidental del área mediterránea a lo largo del intervalo temporal que abarca entre el 5.500-4.700 cal ANE. El objetivo principal de la tesis se aborda a partir del estudio de una muestra significativa de yacimientos neolíticos situados en el noreste de la Península Ibérica. Se ha evaluado con esta tesis doctoral los pr...

Influence of relationship water/cement upon the processing of cements with pozzolana in standard mortar

Directory of Open Access Journals (Sweden)

Gener Rizo, M.

2002-03-01

Full Text Available The processing of standard mortar is completed following different methods in accordance with the country, but they exist two fundamental tendecies, the ISO and the ASTM. The cuban norm for mechanic-physic tests is based in ISO, and so they use a constant relationship water/cement in the processing of standard mortar a great problem concerning the cement users when they tested those mixed with puzzolanes, because they don't take care of the bigger water needs of those materials. In this work we present an study of the behaviour of Pozzolanic Portland cements (PP-250 elaborates with a fix and changeable relationship water/cement, obtained starting from the fluidity of the pure Portland cement. (P-350 The results obtained shows that the mechanical resistance decreased in cement mortars PP-250 realised with changeable relationship water/cement. So we recommend the adoption of an optional procedure to elaborate a quality mortar with pozzolana cements.

La elaboración del mortero normalizado se realiza internacionalmente por diferentes métodos, pero existen dos tendencias fundamentales, la enunciada por ISO y por ASTM. La norma cubana de ensayos físico-mecánicos de cemento se basa en la norma ISO, por lo que para la elaboración del mortero normalizado se utiliza una relación agua/cemento constante. Esto ha provocado discrepancias con los usuarios del cemento, especialmente cuando se ensayan los cementos que contienen puzolanas, ya que se plantea que no se tiene en cuenta la mayor demanda de agua de estos materiales. En el presente trabajo se presenta un estudio del comportamiento de cementos Portland Puzolánicos (PP-250 elaborados con una relación agua/ cemento fija y variable, lograda a partir de la fluidez de la pasta de cemento Portland puro (P-350. Los resultados obtenidos indican que se producen disminuciones en la resistencia mecánica en los morteros de cemento PP-250 elaborados con agua/ cemento variable y recomienda la

Transfer of Air Force technical procurement bid set data to small businesses, using CALS and EDI. Summary report. Revision 1

Energy Technology Data Exchange (ETDEWEB)

NONE

1995-01-10

This report provides a summary of the Air Force CALS Test Network (AFCTN) Test Report Transfer of Air Force Technical Procurement Bid Set Data to Small Businesses, Using CALS and EDI (AFCTN Test Report 94-034, UCRL-ID-118619). It represents a synthesis of the results, conclusions, and recommendations, as well as a more concise presentation of the issues and strategies as viewed from AFCTN`s perspective. 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 {open_quote}Blue Ribbon{close_quote} contractors, located throughout the United States. 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.

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.

Adsorción catalítica de NO a baja temperatura sobre monolitos de carbón activado

Directory of Open Access Journals (Sweden)

Diana López

2011-01-01

Full Text Available Se desarrolló un monolito tipo celular de carbón activado (ACH para la adsorción de NO a 30ºC. Para la preparación de los monolitos celulares se usó como aglomerante la carboximetilcelulosa (CMC y como coaglomerante breade alquitranes de carbón (BAC. Se estudiaron los efectos de la adición de O2 y la presencia de cobre como catalizador. Para las muestras de monolito de carbón activado impregnado con Cu, la presencia de O2 favoreció la adsorción de NO incrementando el tiempo del punto de quiebre (breakthrough y la capacidad de adsorción.

Investigação do método de desenvolvimento de calçados no pólo calçadista do Vale do Rio dos Sinos e Paranhana, no Estado do Rio Grande do Sul

OpenAIRE

Ronise Ferreira dos Santos

2008-01-01

O objetivo desta dissertação foi investigar o método de desenvolvimento de calçados utilizado por profissionais atuantes no Pólo calçadista do Vale do Rio dos Sinos e Paranhana, no Estado do Rio Grande do Sul. O grupo amostrado foi composto por 31 profissionais independentes que atuam para diversas empresas de pequeno, médio e grande porte da região e pelos 11 profissionais do grupo de desenvolvimento de produto de uma empresa de grande porte situada no Pólo. Os dados levantados com a ferrame...

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

International Nuclear Information System (INIS)

1997-01-01

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)

Micropropagaión de stevia rebaudiana bertoni, un endulzante natural a través de explantes con meristemos pre existentes

OpenAIRE

Suárez, Isidro; Quintero, Irma R.

2014-01-01

Título en ingles: Micropropagation of  Stevia rebaudiana Bertoni, a natural sweetener, through pre existing meristem explants Titulo corto: Micropropagación de Stevia rebaudiana Bertoni Resumen: Las hojas de Stevia rebaudiana son fuente de esteviosidos y rebaudiosidos, sustancias endulzantes con bajo contenido calórico. La propagación sexual y clonal de estevia es difícil debido a la calidad de la semilla y el tamaño reducido de la planta. Para evaluar la multiplicación, brotes establecidos i...

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...

Análisis microbiológico de plantas medicinales con óxido de etileno Microbiologic analysis of medicinal plants using ethylene oxide

Directory of Open Access Journals (Sweden)

Mausy Lorena Torres Rojas

2007-08-01

Full Text Available La utilización de plantas curativas constituye una de las terapias médicas más antiguas y extendidas que se remonta a los tiempos prehistóricos (Wust, 2003. Cada cultura ha desarrollado sus tradiciones de medicina popular, con remedios y ritos que utilizan plantas locales. La Organización Mundial de la Salud, mediante varios comunicados ha expresado su posición con respecto a la necesidad de revalorar la utilización de las plantas medicinales dentro del ámbito sanitario, teniendo en cuenta que el 80 % de la población mundial depende de estas en lo referente a la atención primaria de salud (Alonso, 1998. Frente a esta necesidad y a la preocupación que genera ofrecer productos de alta calidad, la investigación realizada permitió evaluar algunas de las materias primas, como: Boldo (Peumus boldus, Caléndula (Calendula officinalis, Sen (Casia angustifolia Vahl, Fucus (Fucus vesiculosas L y Spirulina (Spirulina maxima, que son importantes por la gran oferta que estas tienen en el mercado. El objetivo de este estudio fue evaluar la calidad microbiológica y establecer si el proceso de esterilización con óxido de etileno tenía un efecto eficaz sobre la materia prima, propuesta a evaluar. Se realizó el recuento de microorganismos mesófilos aerobios, hongos, levaduras y pruebas de ausencia/presencia para microorganismos patógenos como: Escherichia coli, Pseudomonas aeruginosa, Salmonella s.p, Clostridium perfringes y Staphylococcus aureus. Estas pruebas se realizaron con la utilización de medios de cultivo específicos: TSN, EMB, CETRIMIDE, XLD, B.P, OGY (hongos y levaduras y Plate Count (mesófilos aerobios. Los resultados obtenidos a partir de las muestras analizadas permitieron obtener datos significativos relacionados con la ausencia/presencia de microorganismos patógenos antes y después del proceso de esterilización, así como el recuento de mesófilos, hongos y levaduras. En las muestras analizadas antes de la esterilizaci

Chemical and Physical Properties of Hi-Cal-2

Science.gov (United States)

Spakowski, A. E.; Allen, Harrison, Jr.; Caves, Robert M.

1955-01-01

As part of the Navy Project Zip to consider various boron-containing materials as possible high-energy fuels, the chemical and physical properties of Hi-Cal-2 prepared by the Callery Chemical Company were evaluated at the NACA Lewis laboratory. Elemental chemical analysis, heat of combustion, vapor pressure and decomposition, freezing point, density, self ignition temperature, flash point, and blow-out velocity were determined for the fuel. Although the precision of measurement of these properties was not equal to that obtained for hydrocarbons, this special release research memorandum was prepared to make the data available as soon as possible.

Final Report Feasibility Study for the California Wave Energy Test Center (CalWavesm) - Volume #2 - Appendices #16-17

Energy Technology Data Exchange (ETDEWEB)

Dooher, Brendan [Pacific Gas and Electric Company, San Ramon, CA (United States). Applied Technical Services; Toman, William I. [California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States). Inst. of Advanced Technology and Public Policy; Davy, Doug M. [CH2M Hill Engineers, Inc., Sacramento, CA (United States); Blakslee, Samuel N. [California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States)

2017-07-31

The California Wave Energy Test Center (CalWave) Feasibility Study project was funded over multiple phases by the Department of Energy to perform an interdisciplinary feasibility assessment to analyze the engineering, permitting, and stakeholder requirements to establish an open water, fully energetic, grid connected, wave energy test center off the coast of California for the purposes of advancing U.S. wave energy research, development, and testing capabilities. Work under this grant included wave energy resource characterization, grid impact and interconnection requirements, port infrastructure and maritime industry capability/suitability to accommodate the industry at research, demonstration and commercial scale, and macro and micro siting considerations. CalWave Phase I performed a macro-siting and down-selection process focusing on two potential test sites in California: Humboldt Bay and Vandenberg Air Force Base. This work resulted in the Vandenberg Air Force Base site being chosen as the most favorable site based on a peer reviewed criteria matrix. CalWave Phase II focused on four siting location alternatives along the Vandenberg Air Force Base coastline and culminated with a final siting down-selection. Key outcomes from this work include completion of preliminary engineering and systems integration work, a robust turnkey cost estimate, shoreside and subsea hazards assessment, storm wave analysis, lessons learned reports from several maritime disciplines, test center benchmarking as compared to existing international test sites, analysis of existing applicable environmental literature, the completion of a preliminary regulatory, permitting and licensing roadmap, robust interaction and engagement with state and federal regulatory agency personnel and local stakeholders, and the population of a Draft Federal Energy Regulatory Commission (FERC) Preliminary Application Document (PAD). Analysis of existing offshore oil and gas infrastructure was also performed

The Cal-Bridge Program: Supporting Diverse Graduate Students in Astrophysics

Science.gov (United States)

Smecker-Hane, Tammy A.; Rudolph, Alexander L.; Abazajian, Kevork; Povich, Matthew S.

2018-06-01

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. To do so, we have built a network of faculty at diverse higher education institutions, including University of California (UC) campuses, California State Universities (CSUs), and community colleges dedicated to this goal. Students selected for our program are known as Cal-Bridge Scholars, and we give them a wide variety of support: (1) financial 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, (4) professional development workshops, (5) exposure to research opportunities at various universities, and (6) membership in a growing cohort of like-minded students. In this poster, we report on our work in designing an effective mentoring program and developing tools like our mentoring and graduate application handbooks, and we discuss our tutoring program and the professional development workshops we have designed, and we report on their effectiveness. Funding for this program is provided by NSF-SSTEM Grant #1356133.

Estado da arte do processo produtivo da cal na região Centro Oeste de Minas Gerais

Directory of Open Access Journals (Sweden)

Ricardo Carrasco Carpio

2013-11-01

Full Text Available As indústrias de cal são caracterizadas pelas altas emissões de dióxido de carbono (CO2 na atmosfera. Isto se deve ao fato das indústrias atuarem com tecnologias ultrapassadas, resultando em alto consumo de combustível, baixa eficiências energéticas e grandes impactos ambientais. Para diminuir os danos ambientais causados pela indústria de cal é necessário o conhecimento do processo produtivo, das tecnologias empregadas e dos impactos ambientais. Por essa razão, este trabalho tem por objetivo fazer uma análise do processo produtivo da cal, desde as jazidas até o produto final, mostrando as tecnologias empregadas em cada etapa do processo.Palavras-chave: Indústrias de cal. Processo produtivo. Impacto ambiental.State-of-the-art on the manufacturing process of lime in mid west region of Minas GeraisAbstractThe lime industries are characterized by high emissions of CO2 in the atmosphere. This is because the industries are using outdated technology, resulting in high fuel consumption, low energy efficiencies and high environmental impacts. To reduce the environmental damages caused by the lime industry, it is necessary to know the manufacturing process, the technologies used and the environmental impacts. Therefore this paper aims to analyze the manufacturing process of lime, from the limestone quarries to the final product, showing the technologies used in each step of the process.Keywords: Lime Industries. Manufacturing process. Environmental impact.

Caracterización de un cemento puzolánico

Directory of Open Access Journals (Sweden)

Hugo Rincón

2010-03-01

Full Text Available Se caracterizáron las materias primas (caliza, yeso, y material pulozánico para la producción de cemento portland y el clinker obtenido en este proceso, por medio del análisis químico elemental y espectroscopia infrarroja. Se estudio el comportamiento al IR y a la comprensión de morteros elaborados a partir de cemento testigo y variaciones de material pulozánico (15, 35, 50 y 60 %. El cálculo de la composición potencial de las fases presentes en el clinker, al igual que el análisis por IR muestran un predominio de la fase C3S (56.09%, característica que concuerda con la naturaleza de las materias primas. El estudio por IR de los diferentes morteros de ensayo mostró el predominio de la forma amorfa en relación directa con el contenido de puzolana en estos. La resistencia a la compresión presenta finalmente un descenso en relación con el aumento de material puzolánico.

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.

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)

OpenAIRE

Ana Belén Cutillas; Ester Herrero; Alba de San Eustaquio; Salvador Zamora; Francisca Pérez-Llamas

2013-01-01

Introducción: Los estudiantes universitarios constituyen un sector de la población potencialmente vulnerable en relación con su estado nutricional. Objetivos: Evaluar la ingesta energética, el perfil calórico de la dieta y la prevalencia de peso insuficiente, sobrepeso y obesidad en estudiantes universitarios. Métodos: El estudio se realizó en 223 estudiantes (53% mujeres) de la Universidad de Murcia (España), edad media 21,4 ± 2,7 años. El consumo de alimentos se estimó mediante registro die...

Empresariado industrial e desenvolvimento socioeconômico: estudo do discurso do empresariado calçadista paulista frente ao mundo globalizado (1995-2010)

OpenAIRE

Guaraldo, Paula D'Andrea [UNESP

2014-01-01

A tese teve como objetivo desenvolver um estudo sobre a fração da classe empresarial brasileira composta pelo empresariado industrial calçadista. A proposta foi conhecer o discurso do empresariado calçadista paulista dos polos produtores calçadistas de Franca, Birigui e Jaú, frente às questões ligadas ao desenvolvimento econômico no contexto globalizado em que se encontra, por meio da análise de suas manifestações públicas em veículos de comunicação voltados ao empresariado nacional sobre o p...

SiPM-based azimuthal position sensor in ANITA-IV Hi-Cal Antarctic balloon experiment

Science.gov (United States)

Novikov, A.; Besson, D.; Chernysheva, I.; Dmitrenko, V.; Grachev, V.; Petrenko, D.; Prohira, S.; Shustov, A.; Ulin, S.; Uteshev, Z.; Vlasik, K.

2017-01-01

Hi-Cal (High-Altitude Calibration) is a balloon-borne experiment that will be launched in December, 2016 in Antarctica following ANITA-IV (Antarctic Impulsive Transient Antenna) and will generate a broad-band pulse over the frequency range expected from radiation induced by a cosmic ray shower. Here, we describe a device based on an array of silicon photomultipliers (SiPMs) for determination of the azimuthal position of Hi-Cal. The angular resolution of the device is about 3 degrees. Since at the float altitude of ˜38 km the pressure will be ˜0.5 mbar and temperature ˜ - 20 °C, the equipment has been tested in a chamber over a range of corresponding pressures (0.5 ÷ 1000) mbar and temperatures (-40 ÷ +50) °C.

SiPM-based azimuthal position sensor in ANITA-IV Hi-Cal Antarctic balloon experiment

International Nuclear Information System (INIS)

Novikov, A; Besson, D; Chernysheva, I; Dmitrenko, V; Grachev, V; Petrenko, D; Shustov, A; Ulin, S; Uteshev, Z; Vlasik, K; Prohira, S

2017-01-01

Hi-Cal (High-Altitude Calibration) is a balloon-borne experiment that will be launched in December, 2016 in Antarctica following ANITA-IV (Antarctic Impulsive Transient Antenna) and will generate a broad-band pulse over the frequency range expected from radiation induced by a cosmic ray shower. Here, we describe a device based on an array of silicon photomultipliers (SiPMs) for determination of the azimuthal position of Hi-Cal. The angular resolution of the device is about 3 degrees. Since at the float altitude of ∼38 km the pressure will be ∼0.5 mbar and temperature ∼ − 20 °C, the equipment has been tested in a chamber over a range of corresponding pressures (0.5 ÷ 1000) mbar and temperatures (−40 ÷ +50) °C. (paper)

The Adaptation Study of the Questionnaires of the Attitude towards CALL (A-CALL), the Attitude towards CAL (A-CAL), the Attitude towards Foreign Language Learning (A-FLL) to Turkish Language

Science.gov (United States)

Erdem, Cahit; Saykili, Abdullah; Kocyigit, Mehmet

2018-01-01

This study primarily aims to adapt the Foreign Language Learning (FLL), Computer assisted Learning (CAL) and Computer assisted Language Learning (CALL) scales developed by Vandewaetere and Desmet into Turkish context. The instrument consists of three scales which are "the attitude towards CALL questionnaire" ("A-CALL")…

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

Science.gov (United States)

Rabelo, Luciana; Monteiro, Norberto; Serquiz, Raphael; Santos, Paula; Oliveira, Ruth; Oliveira, Adeliana; Rocha, Hugo; Morais, Ana Heloneida; Uchoa, Adriana; Santos, Elizeu

2012-01-01

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. PMID:22690140

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.

"Estabilización físico-química de suelos arcillosos elaborados con precursores Nano-métricos"

OpenAIRE

Rubio Ávalos, José Carlos

2011-01-01

En esta investigación se probaron cuatro productos nuevos creados a través de precursores nano-métricos donde se pretendió ver qué tipo de mejoría o estabilización realizaban estos dentro de las propiedades físcas y químicas de las arcillas. Estos productos ó también llamados estabilizantes, se aplicaron en la parte experimental basándose en la metodología de la "National Lime Association", utilizando la norma de "Diseño y procedimiento de ensayos de suelos estabilizados con cal".

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.

SÍNTOMAS ASOCIADOS CON ALTAS CONCENTRACIONES DE BORO EN RAMBUTÁN (Nephelium lappaceum

Directory of Open Access Journals (Sweden)

Alfonso Vargas-Calvo

2009-01-01

Full Text Available Lesiones foliares de diferente intensidad fueron observadas en una plantación comercial de rambután de dos a cuatro años de edad, en asocio con papa ya (Carica papaya, ubicada en la provincia de Heredia, cantón de Sa rapi quí, Costa Ri ca, en el año 2003. Como comparador se utilizaron muestras provenientes de plantas sin síntomas, con un rango de edad similar al de las plantas de Sa - rapi quí, y pertenecientes a la colección de frutales exóticos de la Corporación Bananera Na cional (COR BANA S.A, situada en la provincia de Limón, cantón de Pococí y distante 15 km de la plantación afectada. Con el objetivo de determinar el origen de las lesiones, el segundo y tercer par de hojas más jóvenes, de al menos cuatro ramas equidistantes de la parte media de la planta, fueron utilizados para análisis en el Laboratorio Químico de Suelos y Foliares en COR BANA S.A. El muestreo fue realizado una vez y cada muestra provino de cuatro a cinco plantas con cuatro repe ticiones. La muestra, previamente limpia , seca y molida, fue digerida en microondas y la lectura de todos los elementos, con excepción del nitrógeno que se determinó por combustión seca, se efectuó mediante un espectrofotómetro de plasma modelo Op tima 3000. Las plantas afectadas presentaron una necrosis marginal que se desarrolló del ápice hacia la base y del borde hacia el interior de la lámina foliar con moteados intervenales de apa riencia clorótica. En ocasiones, se observó un rizado de la sección api cal con necrosis ocasionado por la torsión hacia arriba de sus márgenes. El análisis foliar indicó una alta concentración de boro.

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| 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 each TileCal channel are computed offline and stored for both online and offline use. In order to evaluate the impact of the MCD estimator on the performance of the OF, simulated data sets were used. Different average numbers of interactions per bunch crossing and bunch spacings were tested. The results show that the estimation of the background covariance matrix through MCD improves significantly the final energy resolution with respect to the identity matrix which is currently used. Particularly, for high occupancy cells, the final energy resolution is improved by more than 20%. Moreover, the use of the classical covariance matrix degrades the energy resolution for the majority of TileCal cells.

CalFitter: a web server for analysis of protein thermal denaturation data.

Science.gov (United States)

Mazurenko, Stanislav; Stourac, Jan; Kunka, Antonin; Nedeljkovic, Sava; Bednar, David; Prokop, Zbynek; Damborsky, Jiri

2018-05-14

Despite significant advances in the understanding of protein structure-function relationships, revealing protein folding pathways still poses a challenge due to a limited number of relevant experimental tools. Widely-used experimental techniques, such as calorimetry or spectroscopy, critically depend on a proper data analysis. Currently, there are only separate data analysis tools available for each type of experiment with a limited model selection. To address this problem, we have developed the CalFitter web server to be a unified platform for comprehensive data fitting and analysis of protein thermal denaturation data. The server allows simultaneous global data fitting using any combination of input data types and offers 12 protein unfolding pathway models for selection, including irreversible transitions often missing from other tools. The data fitting produces optimal parameter values, their confidence intervals, and statistical information to define unfolding pathways. The server provides an interactive and easy-to-use interface that allows users to directly analyse input datasets and simulate modelled output based on the model parameters. CalFitter web server is available free at https://loschmidt.chemi.muni.cz/calfitter/.

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...

The TileCal Energy Reconstruction for LHC Run2 and Future Perspectives

CERN Document Server

INSPIRE-00517880

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...

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...

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...

Supersoft X-Ray Source CAL 83: A Possible AE Aqr-like System

Directory of Open Access Journals (Sweden)

A. Odendaal

2015-02-01

Full Text Available CAL83 is a close binary supersoft X-ray source in the Large Magellanic Cloud. A ~67 s periodicity detected in supersoft X-rays is most probably associated with the spin period of a highly spun-up white dwarf (WD. The variability in the period is ascribed to the obscuration of the WD by the hydrogen burning envelope surrounding it, rotating with a period that is close to, but not quite synchronized with, the WD rotation period. Optical spectra obtained with SALT exhibit accretion disc emission lines with broad wing structures and P Cyg profiles, indicating mass outflows. Timing analysis of photometrical observations performed at the South African Astronomical Observatory (SAAO revealed variable signals at ≤1 mHz which are thought to be associated with quasi-periodic oscillations from an accretion disc. The short spin period inferred for CAL83 can be the result of spin-up by accretion disc torques during a long mass transfer history, placing this source on a similar evolutionary track as the cataclysmic variable AE Aqr.

Aprovechamiento de partículas de ultrafinos de carbón de una planta lavadora en la producción de coque metalúrgico

Directory of Open Access Journals (Sweden)

Jesús Manuel Gutierrez Bernal

2011-01-01

Full Text Available Se estudió el aprovechamiento en mezclas de ultrafinos provenientes de una planta de lavado de carbón para la producción de coque por el proceso de briquetación, utilizando 6% en peso de alquitrán de carbón como aglomerante. Se caracterizaron las materias primas y se realizó una prueba piloto de coquización en un horno tipo Koppers. Se determinó la calidad del coque por pruebas de análisis próximo, estabilidad (Micum 10, M10 y Micum 40, M40, índice de reactividad del coque al CO2 (CRI y de resistencia después de la reacción con dióxido de carbono (CSR. Los resultados mostraron que la briquetación permite obtener un coque con un CRI de 19,0% y un CSR de 75,6%, características requeridas en los procesos metalúrgicos.

Sedimentary Evidence for a Rapid Sea Level Rise at 7,600 cal yr BP from North-Central Cuba

Science.gov (United States)

Peros, M. C.; Agosta G'meiner, A. M.; Collins, S.

2016-12-01

A lack of high-resolution relative sea level (RSL) proxy data has meant that the pattern of early Holocene RSL change in the Caribbean is poorly understood. A RSL curve published by Toscano and Macintyre (2003) using inter-tidal mangrove peats and submerged corals suggests RSL underwent a relatively fast and `smooth' curvilinear increase during the Holocene. However, others, such as Blanchon and Shaw (1995), suggest that RSL increased rapidly at around 7600 cal yr BP, in response to the final stages of the melting of the Laurentide Ice Sheet (melt water pulse 1C or catastrophic rise event 3). We investigated this question using multi-proxy data from a flooded sinkhole (Cenote Jennifer) on the north coast of central Cuba. Cenote Jennifer is located 7 m above mean sea level and 2 km from the Bahamas Channel and appears to have a high degree of connectivity with the ocean through a network of underground caverns. The water depth is 13 m and the bottommost 5 m is anoxic. A sediment core collected from Cenote Jennifer was studied using loss-on-ignition, pollen analysis, high-resolution XRF core-scanning, and grain size analysis. An age-depth model was generated for the core by AMS dating. The results show that the bottommost stratigraphic unit ( 9000 to 7600 cal yr BP) is a fine-grained carbonate-rich mud (i.e., marl). This unit abruptly transitions into finely laminated organic-rich sediment from 7600 cal yr BP to the present. The pollen analysis shows that the sinkhole supported a cattail (Typha) community until 7600 cal yr BP, indicating low water levels ( 1 m). At 7600 cal yr BP, the cattail community disappeared and the vegetation of the surrounding bedrock became dominated by a thorny coastal scrubland. In addition, a 3 cm thick fining-upward siliciclastic unit is present immediately above the marl-organic contact, suggesting: 1) a marine sediment source given the limestone-dominated nature of the region, and 2) the presence of a short-duration, high

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.

Organic Aerosol Composition and Sources in Pasadena, California during the 2010 CalNex Campaign

Science.gov (United States)

Organic aerosols (OA) in Pasadena are characterized using multiple measurements from the California Research at the Nexus of Air Quality and Climate Change (CalNex) campaign. Five OA components are identified using positive matrix factorization including hydrocarbon-like OA (HOA) ...

The influence of natural pozzolana mineralogical composition in the properties of blended cement

Directory of Open Access Journals (Sweden)

Gener Rizo, M.

2002-09-01

Full Text Available The pozzolana activity is the main property of the active additions but, in order to select them, we have to consider - between other factors- its mineralogical composition with a great influence, not only in the active component, but also in other cement properties. In the present work we have studied 4 different Cuban natural pozzolanes, characterized with the help of X ray diffraction and with thermic and chemical analysis. The pozzolanic activity was also evaluated through a chemical and physicomechanic method. Some cements were prepared with different contents of each one of the pozzolanics, and analysed their physicomechanic and chemical properties. Finally, we found that the pozzolanics mineralogical composition has a great influence in the pozzolanic activity and in the properties of mixed cements. Also we found that it 5 possible to obtain the best resistances in the time and the smaller needs of water when the vitreous phase prevail in the additions.

La actividad puzolánica es la propiedad fundamental de las adiciones activas, pero para la selección de la misma se debe considerar, entre otros factores, su composición mineralógica, que influye no sólo en los constituyentes activos, sino también en muchas propiedades de los cementos. En el presente trabajo, como material puzolánico se estudiaron 4 puzolanas naturales cubanas, las cuales fueron caracterizadas mediante difracción de Rayos X, análisis térmico y análisis químico; se evaluó, además, la actividad puzolánica mediante un método químico y otro físico-mecánico. Se prepararon cementos con diferentes contenidos de cada una de las puzolanas y se analizaron sus propiedades químicas y físico-mecánicas. Se concluye que la composición mineralógica de las puzolanas influye de forma determinante en la actividad puzolánica y en las propiedades de los cementos mezclados; que los mejores desarrollos de resistencias en el tiempo y los menores requerimientos

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.

Welfare Reform in California. State and County Implementation of CalWORKs in the Second Year

National Research Council Canada - National Science Library

Klerman, Jacob

2001-01-01

.... California's response to PRWORA was the California Work and Responsibility to Kids (CalWORKs) program-a "work-first" program that provides support services to help recipients move from welfare to work and toward self-sufficiency...

Social complexity in the third millennium cal BC in southern Portugal

OpenAIRE

Soares, Joaquina

2016-01-01

The starting point of this paper is the extensive archaeological fieldwork developed at the Chalcolithic fortification of Porto das Carretas on the left bank of the Middle Guadiana River (Soares, 2013). The well-preserved stratigraphy and correlated radiocarbon dates of Porto das Carretas enabled a new and deep insight into the third millennium cal BC, displaying environmental, economic and social transformations from the first to the second half of the millenium. Furhermore, the integration ...

CalWater 2 - Precipitation, Aerosols, and Pacific Atmospheric Rivers Experiment

Science.gov (United States)

Spackman, Ryan; Ralph, Marty; Prather, Kim; Cayan, Dan; DeMott, Paul; Dettinger, Mike; Fairall, Chris; Leung, Ruby; Rosenfeld, Daniel; Rutledge, Steven; Waliser, Duane; White, Allen

2014-05-01

Emerging research has identified two phenomena that play key roles in the variability of the water supply and the incidence of extreme precipitation events along the West Coast of the United States. These phenomena include the role of (1) atmospheric rivers (ARs) in delivering much of the precipitation associated with major storms along the U.S. West Coast, and (2) aerosols—from local sources as well as those transported from remote continents—and their modulating effects on western U.S. precipitation. A better understanding of these processes is needed to reduce uncertainties in weather predictions and climate projections of extreme precipitation and its effects, including the provision of beneficial water supply. This presentation summarizes science gaps associated with (1) the evolution and structure of ARs including cloud and precipitation processes and air-sea interaction, and (2) aerosol interaction with ARs and the impact on precipitation, including locally-generated aerosol effects on orographic precipitation along the U.S. West Coast. Observations are proposed for multiple winter seasons as part of a 5-year broad interagency vision referred to as CalWater 2 to address these science gaps (http://esrl.noaa.gov/psd/calwater). In the near term, a science investigation is being planned including a targeted set of aircraft and ship-based measurements and associated evaluation of data in near-shore regions of California and in the eastern Pacific for an intensive observing period between January 2015 and March 2015. DOE's Atmospheric Radiation Measurement (ARM) program and NOAA are coordinating on deployment of airborne and ship-borne facilities for this period in a DOE-sponsored study called ACAPEX (ARM Cloud Aerosol and Precipitation Experiment) to complement CalWater 2. The motivation for this major study is based on findings that have emerged in the last few years from airborne and ground-based studies including CalWater and NOAA's HydroMeterology Testbed

FoCal – A high granularity electromagnetic calorimeter for forward direct photon measurements

NARCIS (Netherlands)

Zhang, C.

2017-01-01

The measurement of direct photon production at forward rapidity (y∼3−5) at the LHC provides access to the structure of protons and nuclei at very small values of fractional momentum (x∼10−5). FoCal, an extremely-high-granularity Forward Calorimeter covering 3.3<η<5.3 is proposed as a detector

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.

All partial breakings in ${\\cal N}=2$ supergravity with a single hypermultiplet arXiv

CERN Document Server

Antoniadis, Ignatios; Petropoulos, P. Marios; Siampos, Konstantinos

We consider partial supersymmetry breaking in ${\\cal N}=2$ supergravity coupled to a single vector and a single hypermultiplet. This breaking pattern is in principle possible if the quaternion-K\\"ahler space of the hypermultiplet admits (at least) one pair of commuting isometries. For this class of manifolds, explicit metrics exist and we analyse a generic electro-magnetic (dyonic) gauging of the isometries. An example of partial breaking in Minkowski spacetime has been found long ago by Ferrara, Girardello and Porrati, using the gauging of two translation isometries on $SO(4,1)/SO(4)$. We demonstrate that no other example of partial breaking of ${\\cal N}=2$ supergravity in Minkowski spacetime exists. We also examine partial-breaking vacua in anti-de Sitter spacetime that are much less constrained and exist generically even for electric gaugings. On $SO(4,1)/SO(4)$, we construct the partially-broken solution and its global limit which is the Antoniadis-Partouche-Taylor model.

Improvement by the Life Cycle Control System of University Production With Use of CALS-Tehnology

Directory of Open Access Journals (Sweden)

Yuriy I. Dreizis

2013-01-01

Full Text Available The mechanism of management by life cycle of production of university with use of CALS technologies is described. Tasks of service of marketing and the quality management department, connected with university product quality control are defined

A modern documented Italian identified skeletal collection of 2127 skeletons: the CAL Milano Cemetery Skeletal Collection.

Science.gov (United States)

Cattaneo, Cristina; Mazzarelli, Debora; Cappella, Annalisa; Castoldi, Elisa; Mattia, Mirko; Poppa, Pasquale; De Angelis, Danilo; Vitello, Antonio; Biehler-Gomez, Lucie

2018-06-01

The CAL Milano Cemetery Skeletal Collection is a modern and continuously growing identified osteological collection of 2127 skeletons under study in the Laboratorio di Antropologia e Odontologia Forense (LABANOF) in the Department of Biomedical Sciences for Health of the University of Milan (Italy), and part of the Collezione Antropologica LABANOF (CAL). The collection presents individuals of both sexes and of all age groups with a high representation of the elderly and an interesting sample of infants. Each individual is associated with a documentation that includes sex, age-at-death, dates of birth and death, and a death certificate that specifies the exact cause of death and the chain of events that led to it (related pathological conditions or traumatic events). It was also possible to recover for several individuals the autopsy reports and antemortem photographs. This documented osteological collection is of crucial interest in physical and forensic anthropology: it provides unique teaching opportunities and more importantly considerable research possibilities to test and develop sex and age estimation methods, investigate key subjects of forensic relevance and discuss pathological markers, among others. The aim of this paper is to introduce the CAL Milano Cemetery Skeletal Collection as a new identified skeletal collection and present its research and teaching potential. Copyright © 2018 Elsevier B.V. All rights reserved.

Dose measurements using thermoluminescent dosimeters and DoseCal software at two paediatric hospitals in Rio de Janeiro

International Nuclear Information System (INIS)

Mohamadain, K.E.M.; Azevedo, A.C.P.; Rosa, L.A.R. da; Guebel, M.R.N.; Boechat, M.C.B.

2003-01-01

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 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

Mejoramiento del potencial agrícola de lodos digeridos anaeróbicamente con el uso de cal

Directory of Open Access Journals (Sweden)

Torres Patricia

2005-12-01

viva (CaO, 20%, 40% y 65% en peso, con el objetivo de mejorar el potencial uso agrícola del material. En general, se observó un efecto desfavorable sobre la eficiencia del proceso de deshidratación cuando la cal fue adicionada al inicio, recomendándose una reducción de humedad del lodo hasta un rango entre 65% y 70% antes de la adición de la cal; este nivel de deshidratación fue alcanzado después de 7 a 9 d de secado. El rango de cal evaluado garantizó la elevación del pH hasta 12 unidades durante el tiempo de contacto suficiente para la remoción de patógenos y parásitos. En las condiciones en que fue realizado el estudio, esta investigación mostró que el mejor tratamiento para remover patógenos y huevos de helmintos correspondió a la adición de 20% en peso de cal viva. Las características del material producido permiten sugerir su uso con fines agrícolas como reemplazo total o parcial de fertilizantes químicos, mejoradores de suelos, compostaje, etc., para lo cual se recomienda la realización de pruebas a nivel de invernadero.

EVALUACIÓN DE UNA FUENTE DE ENMIENDA LÍQUIDA EN EL RENDIMIENTO DEL ARROZ EN UN ULTISOL DE LA ZONA NORTE DE COSTA RICA

Directory of Open Access Journals (Sweden)

Juan Manuel Valerio

2012-01-01

Full Text Available Se evaluó el efecto de la aplicación de una enmienda calcárea líquida sobre el rendimiento del arroz y la fertilidad del suelo. El ensayo se realizó en un Ultisol de Los Chiles, Alajuela. Se utilizó una enmienda líquida que contiene 40% de Ca en forma de CaCO3 y 6,9% de N en forma de urea (Cal 56®. Los tratamientos fueron: testigo sin cal; Cal 56 8 l.ha-1; Cal 56 10 l.ha-1; y Cal 56 6 l.ha-1 + Nitro LL 4 l.ha-1. El Nitro LL es un fertilizante líquido de liberación controlada, que contiene 33% de N. Los productos fueron aplicados con bomba de espalda, con un volumen de caldo de 200 l.ha-1, en forma de aspersión al suelo 8 días después de germinado el arroz. Se utilizaron parcelas de 10x10 m, con un diseño experimental de Bloques Completos al Azar, con 4 tratamientos y 4 repeticiones. No hubo diferencias significativas con las variables tamaño de panícula en cm, número de espigas por panícula, número total de granos por panícula, número de granos llenos, número de granos vanos y peso de 1000 granos, aunque la mayoría de estas variables presentaron valores más altos que el testigo con la aplicación de enmienda líquida. Hubo diferencias significativas (p<0,01 en la variable de rendimiento de arroz en ranza.

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.

Can TAD and CalTAD predict cut-out after extra-medullary fixation with new generation devices of proximal femoral fractures? A retrospective study.

Science.gov (United States)

Caruso, Gaetano; Andreotti, Mattia; Pari, Carlotta; Soldati, Francesco; Gildone, Alessandro; Lorusso, Vincenzo; Massari, Leo

2017-01-01

Intramedullary and extramedullary strategies of pertrochanteric fracture fixation are still controversial, but new percutaneous devices may give advantages regarding operative time, blood loss and rate of cardiovascular complications. We retrospectively analyze our cases regarding Anteversa ® plate (Intrauma, Turin, Italy) fixation of pertrochanteric femoral fractures, focusing on the correlation between two radiographical parameters (tip-apex distance "TAD" and calcar referenced tip-apex distance "CalTAD") and the occurrence of cut-out. The purpose of this study was to determine if these predicting factors of cut-out are reliable in the treatment of proximal femoral fractures with the Anteversa plate. A series of 77 patients with 53 31-A1 fracture types and 24-A2 fractures completed a 12-month-follow-up. Clinical outcomes were evaluated according to Parker-Palmer Mobility Score at the final follow-up. TAD and CalTAD were considered to determine their correlation with cut-out events. The mean Parker-Palmer Score was 6.94 in A1 group and 7.41 in A2 group ( p  = 0.47). Mean value of TAD index was 29.58, 29.81 in the A1 group and 29.08 in the A2 group, and mean value of CalTAD index was 30.87, 31.03 in the A1 group and 30.50 in the A2 group. We observed 3 cases of implant cut-out. We shared our sample in two groups, one group with TAD and CalTAD indices lower than 25 mm and another group higher than 25 mm to evaluate how the Palmer Parker score changed and no statistical differences were found between the two groups. Taking into consideration that good clinical results were obtained for TAD and CalTAD values superior to 25 mm, the prognostic value of 25 mm of TAD and CalTAD indices might not be appropriate to this new percutaneous plate.

Anthocyanins from black rice (Oryza sativa L.) demonstrate antimetastatic properties by reducing MMPs and NF-κB expressions in human oral cancer CAL 27 cells.

Science.gov (United States)

Fan, Ming-Jen; Wang, I-Chen; Hsiao, Yung-Ting; Lin, Hui-Yi; Tang, Nou-Ying; Hung, Tzu-Chieh; Quan, Christine; Lien, Jin-Cherng; Chung, Jing-Gung

2015-01-01

Aside from the commonly known white rice lines, colored varieties also exist. These varieties have historically been used in Chinese medicine. Anthocyanins, a large group of natural polyphenols existing in a variety of daily fruits and vegetables, have been widely recognized as cancer chemopreventive agents. The primary objective of cancer treatment strategies has traditionally focused on preventing the occurrence of metastasis. In this research the antimetastatic mechanism of anthocyanins on the invasion/migration of human oral CAL 27 cells was performed using a transwell to quantify the migratory potential of CAL 27 cells and the results show that anthocyanins can inhibit the in vitro migration and invasion of CAL 27 cancer cells. In addition, the gelatin zymography assay indicated that anthocyanins inhibited the activity of matrix metalloproteinases-2 (MMP-2). Western blotting assay also demonstrated that anthocyanins inhibited the associated protein expression of migration/invasion of CAL 27 cell. Immunofluorescence staining proved that anthocyanins inhibited nuclear factor kappa B p65 (NF-κB p65) expressions. These results demonstrated that anthocyanins from a species of black rice (selected purple glutinous indica rice cultivated at Asia University) could suppress CAL 27 cell metastasis by reduction of MMP-2, MMP-9, and NF-κB p65 expression through the suppression of PI3K/Akt pathway and inhibition of NF-κB levels.

NO2 fluxes from Tijuana using a mobile mini-DOAS during Cal-Mex 2010

Science.gov (United States)

Rivera, Claudia; Barrera, Hugo; Grutter, Michel; Zavala, Miguel; Galle, Bo; Bei, Naifang; Li, Guohui; Molina, Luisa T.

2013-05-01

NO2 fluxes were measured using a mobile mini-DOAS during Cal-Mex 2010 field study, between May 15 and June 30, 2010, from the urban area of Tijuana, Baja California as well as the Rosarito power plant. The average calculated NO2 fluxes were 328 ± 184 (269 ± 201) g s-1, and 23.4 ± 4.9 (12.9 ± 11.9) g s-1 for Tijuana urban area and Rosarito power plant, respectively, using model based wind fields and onsite measurements (in parenthesis). Wind speed and wind direction data needed to estimate the fluxes were both modeled and obtained from radiosondes launched regularly during the field campaign, whereas the mixing layer height throughout the entire field campaign was measured using a ceilometer. Large variations in the NO2 fluxes from both the Tijuana urban area and Rosarito power plant were observed during Cal-Mex 2010; however, the variability was less when model based wind fields were used. Qualitative comparisons of modeled and measured plumes from the Tijuana urban area and Rosarito power plant showed good agreement.

Improvement of physical and chemical properties of concrete with brazilian silica rice husk (SRH La mejora de propiedades físicas y químicas de hormigón con silice de cáscara de arroz (SRH brasileña

Directory of Open Access Journals (Sweden)

Fernanda Giannotti da Silva

2008-04-01

Full Text Available The use of industrial and agricultural waste substitutions for Portland cement has greatly contributed to sustainable development practices. The increase in cement demand will be met by the use of supplementary cementing materials, in order to minimize the clinker consumption. In this study, the effects of silica extracted from rice husk (SRH as a partial replacement of cement in concretes with low water/binder are reported. The properties investigated include compressive strength, splitting tensile strength, water absorption by immersion, water absorption by capillarity and resistance to chloride ion penetration. The research indicates that SRH is an effective mineral addition for designing durable concrete presenting an optimal performance when the replacement ratio of Portland cement is around 10%El uso de desechos industriales y agrícolas como segmento en la producción de cemento Portland ha contribuido de manera importante en la práctica de desarrollo sustentable. El aumento en la demanda de cemento coincide con el uso de materiales aglomerantes suplementarios para minimizar el consumo de clinker. En este estudio, se informan los efectos de la sustitución parcial de cemento Portland por sílice extraído de la cascara de arroz (SRH en hormigones con baja relación agua/materiales cementicios. Las propiedades investigadas incluyen resistencia a la compresión, resistencia a la tracción, absorción de agua por inmersión, absorción de agua por capilaridad y resistencia a la penetración de iones de cloruro. La investigación indica que SRH es una adición mineral eficaz para el diseño de hormigones durables que presenta una actuación óptima cuando la proporción del reemplazo de cemento de Portland está alrededor de 10%

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

2017-04-01

: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.

Produtividade e jornada de trabalho na indústria de calçados de Franca - quem fica com os ganhos?

OpenAIRE

Corrêa, Lauro Henrique Guimarães

2005-01-01

O presente trabalho tem como eixo central a problematização das relações que permeiam a evolução e o desempenho de fatores econômicos tais como a produtividade, os níveis de emprego e a jornada de trabalho no contexto do modo de produção capitalista na particularidade da indústria calçadista de Franca (SP), o maior pólo brasileiro de fabricação de calçados masculinos. Inserindo-se no rol das formulações que advogam a necessidade, a importância e a justiça de se promover redu...

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.

Influencia de las características del relleno mineral en la resistencia de una mezcla asfáltica

OpenAIRE

Reyes-Ortiz, O. J. (Oscar Javier); Rincón, J. F. (John Fredy)

2009-01-01

El objetivo principal de esta investigación fue determinar el efecto en la resistencia a tracción indirecta de reemplazar el relleno mineral por cemento, cal y ceniza volante con diferentes porcentajes. El estudio se inició con la caracterización de los materiales (agregados, asfaltos, cal, cemento y ceniza volante), seguido de la determinación del porcentaje óptimo de asfalto mediante el método Marshall. Se seleccionaron para el estudio la granulometría MD10 y el asfalto con penetración 60/7...

La técnica tradicional del estuco "a fuego"

OpenAIRE

Gonzalez Yunta, Francisco; González Cortina, Mariano; Lasheras Merino, Félix

2010-01-01

Dentro de las diferentes técnicas de acabados de paramentos que tradicionalmente se han ejecutado con mortero de cal destaca, por su dificultad, la realización del estuco a fuego. En su elaboración se empleaban morteros y pastas de cal con aditivos como pigmentos y jabones vegetales; con la aplicación final de una plancha metálica a una elevada temperatura se creaba una terminación continua que imitaba las piedras naturales. A pesar de que dichos acabados se han utilizado profusamente e...

Percepción de salud y su efecto en pacientes con diabetes

Directory of Open Access Journals (Sweden)

OFELIA MERCEDES MEDINA LÓPEZ

2009-12-01

Full Text Available Introducción: la percepción de la salud es un predictor significativo de mortalidad, de actitudes hacia la muerte y de cumplimiento de tratamientos durante la enfermedad; cómo se observan las personas en bienestar físico actual, futuro y adaptación psicológica; por tanto, tiene un papel importante en la conducta promotora de salud. Lo descrito motivó la reflexión sobre esos conceptos y la actuación de los pacientes con diabetes mellitus tipo 2 (PDMT2, enfermedad que representa un problema de salud pública mundial. Propósito: determinar el efecto de los factores personales (biológicos, psicológicos y socioculturales sobre el resultado de conducta (estilo de vida de los pacientes con diabetes mellitus tipo 2. Marco teórico: " Modelo de promoción de la salud" de Pender (1. Metodología: diseño descriptivo-correlacional, en una muestra de 125 pacientes. Resultados: la variable factores personales mostró efecto sobre la variable estilo de vida (nutrición, ejercicio, responsabilidad en salud y manejo adecuado del estrés (F cal = 4.780 R2 38,7, p = ,001. Conclusión: los resultados apoyan la relación entre los conceptos seleccionados del " Modelo de promoción de la salud" de Pender (2003 y muestran que la percepción de salud de los PDMT2 promueve cambios de la conducta promotora (estilo de vida, por lo que se cree que los pacientes pueden actuar, corresponsablemente con el equipo de salud, para mejorar el control del padecimiento y evitar o retrasar complicaciones.

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.

Deslocamento de empresas para os estados do Ceará e da Bahia: o caso da indústria calçadista

OpenAIRE

Santos, Angela Maria Medeiros Martins; Correa, Abidack Raposo; Alexim, Flavia Menna Barreto; Peixoto, Gabriel Barros Tavares

2002-01-01

Este artigo objetiva apresentar o deslocamento do setor calçadista brasileiro das regiões Sul e Sudeste para o Nordeste, especialmente para os Estados do Ceará e da Bahia. Nesse sentido, procura-se mostrar as políticas de atração de novos investimentos do setor nesses estados, assim como suas perspectivas e seus principais problemas. Serão apresentadas as características gerais do setor no Ceará e na Bahia, os fatores que determinaram a migração de empresas calçadistas, a logística de suprime...

A modern documented Italian identified skeletal collection of 2127 skeletons: The CAL Milano Cemetery Skeletal Collection.

Science.gov (United States)

Cattaneo, Cristina; Mazzarelli, Debora; Cappella, Annalisa; Castoldi, Elisa; Mattia, Mirko; Poppa, Pasquale; De Angelis, Danilo; Vitello, Antonio; Biehler-Gomez, Lucie

2018-04-24

The CAL Milano Cemetery Skeletal Collection is a modern and continuously growing identified osteological collection of 2127 skeletons under study in the Laboratorio di Antropologia e Odontologia Forense (LABANOF) in the Department of Biomedical Sciences for Health of the University of Milan (Italy), and part of the Collezione Antropologica LABANOF (CAL). The collection presents individuals of both sexes and of all age groups with a high representation of elderly and an interesting sample of infants. Each individual is associated with a documentation that includes sex, age-at-death, dates of birth and death, and a death certificate that specifies the exact cause of death and the chain of events that led to it (related pathological conditions or traumatic events). It was also possible to recover for several individuals the autopsy reports and antemortem photographs. Copyright © 2017 Elsevier Ltd and ISBI. All rights reserved.

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.

Blocos solo-cal utilizando resíduo da construção civil Soil-lime bricks using building waste

Directory of Open Access Journals (Sweden)

S. M. R. Patricio

2013-03-01

Full Text Available Novas técnicas vêm sendo desenvolvidas com o objetivo de incentivar o desenvolvimento sustentável e tentar minimizar a degradação ambiental causada pela extração indiscriminada de recursos naturais além da constante geração de resíduos de construção e demolição. Esta pesquisa objetiva avaliar a utilização de resíduos da construção civil, oriundos de demolição, como agente pozolânico na fabricação de blocos solo-cal. As matérias primas convencionais e alternativas (resíduos foram caracterizados por meio dos seguintes ensaios: massa especifica real, área específica, análise granulométrica por peneiramento e por difração á laser,limites de liquidez e plasticidade, análise química e difração de raios X. Para os ensaios tecnológicos foram confeccionados corpos de prova solo-cal no traço 1:10 em peso, com substituição da cal por resíduos nas seguintes proporções: 0, 10, 20, 25, 30, 40, 50 e 75%. Os corpos de prova foram curados por períodos de 28, 60 e 90 dias, em câmara úmida com 100% de umidade relativa, em seguida determinada sua resistência à compressão simples e absorção de água. Com os melhores resultados de resistência a compressão simples, foram moldados blocos solo-cal e solo-cal-resíduo. Os resultados obtidos com os blocos solo-cal incorporados com resíduo evidenciaram valores dentro das especificações das normas da ABNT, apontando que existe viabilidade técnica no aproveitamento de resíduos de demolição para uso na fabricação de blocos solo-cal sem função estrutural.New techniques have been developed with the aim of encouraging sustainable development and try to minimize the environmental degradation caused by indiscriminate extraction of natural resources and the constant generation of building waste. This research aims to evaluate the use building waste, as pozzolanic agent in the soil-lime bricks manufacture. Raw materials conventional and alternatives (waste were

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.

Modeling of Trans-boundary Transport of Air Pollutants in the California-Mexico Border Region during Cal-Mex 2010

Science.gov (United States)

Bei, N.; Zavala, M. A.; Lei, W.; Li, G.; Molina, L. T.

2010-12-01

The US and Mexico share a common air basin along the ~200 km border between California and Baja California. The economical activities in this region are heavily influenced by the international trade and commerce between Mexico and the US that mainly occurs through the borders of the sister cities of San Diego-Tijuana and Calexico-Mexicali. The diversity and differences in the characteristics of emissions sources of air pollutants in the California-Mexico border region make this an important area for the study of the chemistry and trans-boundary transport of air pollutants. During May-June of 2010, the Cal-Mex 2010 field campaign included a series of measurements aimed at characterizing the emissions from major sources in the California-Mexico border region and assessing the possible impacts of these emissions on local and regional air quality. In this work we will present the results of the use of the Comprehensive Air quality model with extensions (CAMx) in a modeling domain that includes the sister cities of San Diego-Tijuana and Calexico-Mexicali for studying events of trans-boundary transport of air pollutants during Cal-Mex 2010. The measurements obtained during the Cal-Mex 2010 field campaign are used in the evaluation of the model performance and in the design of air quality improvement policies in the California-Mexico border region.

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.

EFECTO DE LA ADICIÓN DE CAL A PLANTACIONES DE JAÚL (Alnus acuminata EN ANDISOLES DE LA CUENCA ALTA DEL RÍO VIRILLA, COSTA RICA

Directory of Open Access Journals (Sweden)

Marlon Salazar

2011-01-01

Full Text Available Con el propósito de evaluar el impacto de adicionar cal a plantaciones de jaúl (Alnus acuminata (H.B.K. O. Kuntze en Andisoles de la cuenca alta del río Virilla, Costa Rica, se realizó el presente trabajo en 2 localidades: 1 Finca Hospicio: Ubicada en la localidad de Vista de Mar, cantón de Goicoechea, a una altitud de 1542 msmn; el suelo se clasificó como Typic Udivitrands y la plantación se estableció en el 2002. 2 Finca Dorval: Ubicada en la localidad de Las Nubes, cantón de Vásquez de Coronado, a una altitud de 1925 msnm; el suelo se clasificó como Thaptic Udivitrands y la plantación se estableció en 1997. Los tratamientos aplicados fueron 0 (testigo, 750, 1500 y 2250 kg.ha-1 de carbonato de calcio y magnesio (Dolomita, 1500 kg.ha-1 de carbonato de calcio (Calcita y 1500 kg.ha-1 de sulfato de calcio (Yeso. Se midieron el diámetro a la altura del pecho (DAP a 1,3 m, la altura total de los árboles (m y se estimó el volumen (V mediante la formula: V(m3=2,71828¿10,0557+ln(d*2,0369+0,9277 18*ln(h propuesta por Segura et al. (2005, en la cual d es el DAP en cm y h es la altura total en m. Al comparar las mediciones del diámetro a la altura del pecho, incremento medio anual en diámetro (IMA-DAP, altura total, incremento medio anual en altura (IMA-ALT, volumen total e incremento en volumen total, por dosis y fuentes de cal aplicada, se observó que ningún tratamiento causó diferencias estadísticas, en estas variables en ninguna de las 2 fincas comparadas ni entre épocas de medición. La adición de fuentes y niveles de cal no afectó significativamente las variables diámetro, altura y volumen. La falta de respuesta a las diferentes enmiendas comparadas demuestra que el suelo proporcionó suficiente Ca, Mg y S para asegurar el crecimiento óptimo del jaúl. Tampoco se encontró que los suelos mostraran problemas de acidez de magnitud tal que afectaran negativamente el crecimiento del jaúl.

CalWater 2 - Precipitation, Aerosols, and Pacific Atmospheric Rivers Experiment

Science.gov (United States)

Spackman, J. R.; Ralph, F. M.; Prather, K. A.; Cayan, D. R.; DeMott, P. J.; Dettinger, M. D.; Fairall, C. W.; Leung, L. R.; Rosenfeld, D.; Rutledge, S. A.; Waliser, D. E.; White, A. B.

2014-12-01

Emerging research has identified two phenomena that play key roles in the variability of the water supply and the incidence of extreme precipitation events along the West Coast of the United States. These phenomena include the role of (1) atmospheric rivers (ARs) in delivering much of the precipitation associated with major storms along the U.S. West Coast, and (2) aerosols—from local sources as well as those transported from remote continents—and their modulating effects on western U.S. precipitation. A better understanding of these processes is needed to reduce uncertainties in weather predictions and climate projections of extreme precipitation and its effects, including the provision of beneficial water supply. This presentation summarizes the science objectives and strategies to address gaps associated with (1) the evolution and structure of ARs including cloud and precipitation processes and air-sea interaction, and (2) aerosol interaction with ARs and the impact on precipitation, including locally-generated aerosol effects on orographic precipitation along the U.S. West Coast. Observations are proposed for multiple winter seasons as part of a 5-year broad interagency vision referred to as CalWater 2 to address these science gaps (http://esrl.noaa.gov/psd/calwater). In January-February 2015, a field campaign has been planned consisting of a targeted set of aircraft and ship-based measurements and associated evaluation of data in near-shore regions of California and in the eastern Pacific. In close coordination with NOAA, DOE's Atmospheric Radiation Measurement (ARM) program is also contributing air and shipborne facilities for ACAPEX (ARM Cloud Aerosol and Precipitation Experiment), a DOE-sponsored study complementing CalWater 2. Ground-based measurements from NOAA's HydroMeteorological Testbed (HMT) network in California and aerosol chemical instrumentation at Bodega Bay, California have been designed to add important near surface-level context for the

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, K. A.; Cayan, D.; Spackman, J. R.; DeMott, P.; Dettinger, M.; Fairall, C.; Leung, R.; Rosenfeld, D.; Rutledge, S.; Waliser, D.; White, A. B.; Cordeira, J.; Martin, A.; Helly, J.; Intrieri, J.

2016-07-01

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.

Control System for ATLAS TileCal HVRemote boards

CERN Document Server

AUTHOR|(SzGeCERN)739751; The ATLAS collaboration; Gurriana, Luis; Oleiro Seabra, Luis Filipe; Evans, Guiomar; Gomes, Agostinho; Maio, Amelia; Pinto Silva Rato, Catia Sofia; Almendra Sabino, Joao Maria; Augusto, Jose

2017-01-01

One of the proposed solutions for upgrading the high voltage (HV) system of TileCal, the ATLAS central hadron calorimeter, consists in removing the HV regulation boards from the detector and deploying them in a low-radiation room where there is permanent access for maintenance. This option requires many ∼100 m long HV cables but removes the requirement of radiation hard boards. This solution simplifies the control system of the HV regulation cards (called HVRemote). It consists of a Detector Control System (DCS) node linked to 256 HVRemote boards through a tree of Ethernet connections. Each HVRemote includes a smart Ethernet transceiver for converting data and commands from the DCS into serial peripheral interface (SPI) signals routed to SPI-capable devices in the HVRemote. The DCS connection to the transceiver and the control of some SPI-capable devices via Ethernet has been tested successfully. A test board (HVRemote-Ctrl) with the interfacing sub-system of the HVRemote was fabricated. It is being tested ...

Calculation of the TileCal magnetic forces using 3D Tosca model

International Nuclear Information System (INIS)

Morozov, N.A.; Samsonov, E.V.; Vorozhtsov, S.B.; Nessi, M.

1998-01-01

The purpose of the given paper is to contribute to the new summary (taking into account the latest information) of magnetic forces, acting on various parts of the TileCal of the ATLAS detector (LHC, CERN). To get an impression of the field distribution in the vicinity of the objects under consideration of existing 3D Tosca field model of the detector was used. The detailed distribution of forces along the border of various parts of the system, derived here, is valuable for understanding the mechanics of system performance

Informe final: desarrollo de la tecnología de inmovilización: estabilización / solidificación de desechos peligrosos en Costa Rica

Directory of Open Access Journals (Sweden)

Luis Guillermo Romero Esquivel

2009-01-01

Full Text Available Se evaluó la tecnología de inmovilización en un lodo proveniente del tratamiento del agua residual del proceso de electrodeposición de cromo y níquel sobre cobre; dos reactivos químicos vencidos de metales tóxicos (plomo y cadmio; y dos residuos sólidos resultantes del tratamiento de desechos líquidos del Instituto Tecnológico de Costa Rica. Para la inmovilización de un lodo proveniente del tratamiento del agua residual del proceso de electrodeposición de cromo y níquel sobre cobre de la empresa Prolex S. A., se evaluó la eficacia de tres tipos de materiales cementantes: cemento Pórtland / carbonato de calcio (50/50 y 75/25; y cemento Pórtland/puzolana (85/15. Con el fin de determinar si el lodo se puede disponer en un relleno sanitario, se determinaron las características toxicas de lixiviación del lodo mediante el método Toxicity Characteristic Leaching Procedure (TCLP, determinándose que los niveles de lixiviación del níquel están por encima de la norma nacional. Se encontró que todos los cementos logran la inmovilización satisfactoria del níquel, pero la mezcla cemento Pórtland/puzolana (85/15 presenta las mejores resistencias mecánicas para la disposición del material tratado en un relleno sanitario; por lo tanto es la más recomendable para el tratamiento. Este tipo de material cementante también se evaluó a nivel piloto, utilizando una mezcladora del tipo empleado en construcción. La resistencia mecánica del material así preparado está cuatro veces por encima de la formulación que utilizaba la empresa Prolex S. A., que incluye un aditivo importado, cemento convencional y piedra. La tecnología de inmovilización también resultó satisfactoria en el tratamiento de reactivos vencidos de metales tóxicos (plomo y cadmio. En este caso, los cementos convencional, Pórtland y Pórtland con puzolanas fueron eficaces al inmovilizar acetato de cadmio en un 11%�

Constraints on primary and secondary particulate carbon sources using chemical tracer and 14C methods during CalNex-Bakersfield

Data.gov (United States)

U.S. Environmental Protection Agency — The present study investigates primary and secondary sources of organic carbon for Bakersfield, CA, USA as part of the 2010 CalNex study. The method used here...

Characterization of emissions sources in the California-Mexico Border Region during Cal-Mex 2010

Science.gov (United States)

Zavala, M. A.; Lei, W.; Li, G.; Bei, N.; Barrera, H.; Tejeda, D.; Molina, L. T.; Cal-Mex 2010 Emissions Team

2010-12-01

The California-Mexico border region provides an opportunity to evaluate the characteristics of the emission processes in rapidly expanding urban areas where intensive international trade and commerce activities occur. Intense anthropogenic activities, biomass burning, as well as biological and geological sources significantly contribute to high concentration levels of particulate matter (PM), polycyclic aromatic hydrocarbons (PAHs), nitrogen oxides (NOx), volatile organic compounds (VOCs), air toxics, and ozone observed in the California-US Baja California-Mexico border region. The continued efforts by Mexico and US for improving and updating the emissions inventories in the sister cities of San Diego-Tijuana and Calexico-Mexicali has helped to understand the emission processes in the border region. In addition, the recent Cal-Mex 2010 field campaign included a series of measurements aimed at characterizing the emissions from major sources in the California-Mexico border region. In this work we will present our analyzes of the data obtained during Cal-Mex 2010 for the characterization of the emission sources and their use for the evaluation of the recent emissions inventories for the Mexican cities of Tijuana and Mexicali. The developed emissions inventories will be implemented in concurrent air quality modeling efforts for understanding the physical and chemical transformations of air pollutants in the California-Mexico border region and their impacts.

Temperature studies of the TileCal ROD G-Links for the validation of the air-cooling system

CERN Document Server

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

2007-01-01

In this paper we show the results of the temperature studies performed on the TileCal ROD G-Links in order to validate the air-cooling system. In the first part of the note we present results on the characterization tests of the temperature monitor system for the G-Link chips of the TileCal ROD motherboard, performed at IFIC-Valencia. We report on the performance of the temperature behavior system and some cooling studies of a single ROD motherboard. We conclude that the present system can be successfully used to online monitor the temperature of the ROD G-Links. In the second part we show the results of the studies performed with multiple RODs in a standard 9U VME crate in the laboratory at IFIC, and in their final location in the ATLAS cavern. We conclude that the air-cooling provided by the standard VME crate fans is enough to keep the temperature of the G-Links well within specifications.

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

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

Science.gov (United States)

2012-12-31

...--Abandonment of Residual Common Carrier Obligation Exemption--in Alameda County, Cal. (San Jose Industrial Lead... easement on, and for SCVTA, the owner of the line, to abandon its residual common carrier obligation for, a portion of the San Jose Industrial Lead between mileposts 5.38 and 7.35 near the Warm Springs freight rail...

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

preescolares desnutridos con madres con obesidad y sin obesidad

Directory of Open Access Journals (Sweden)

Viridiana Vanessa Conzuelo-González

2009-01-01

Full Text Available El primer objetivo fue conocer cuántos menores de cinco años con diferentes grados de desnutrición tienen una madre con sobrepeso/obesidad/ en una comunidad indígena que vive en extrema pobreza y bajo condiciones de migración masculina internacional. El segundo fue comparar tres variables socionutricionales (ingreso familiar, educación de la madre y adecuación nutrimental de la dieta diaria entre estos hogares y los hogares con desnutrición infantil y madres sin obesidad. Se realizó un estudio transversal (2006-2007, en la comunidad mazahua de San Francisco Tepeolulco, Municipio de Temascalcingo; que incluyó a 85 hogares integrados por preescolares con desnutrición inscritos al programa Oportunidades. Se determinó el estado nutrición de los preescolares con indicadores antropométricos y se obtuvo el IMC de las madres de estos infantes. Se aplicó una encuesta socionutricional, incluida el recordatorio de 24 horas, y complementado con la observación participante (cualitativa. Se encontró que 83% de las madres mazahuas presentaron sobrepeso u obesidad. El estado de nutrición de los preescolares con madres con obesidad presentó un porcentaje mayor de desnutrición (76%. En la variable género, se encontró que 54% de los niños con madres con obesidad tenía baja talla. Al relacionar el nivel educativo de la madre, esta variable resultó ser estadísticamente significativa (p=0.015, donde el analfabetismo está más relacionado con la desnutrición infantil que tienen madres de bajo y/o peso normal. La elevada prevalencia de hogares conformados con preescolares con desnutrición y madres con obesidad, es un síntoma más de la pobreza en zonas indígenas en México, con bajo índice de desarrollo humano.

Chronostratigraphy in karst records from the Epipaleolithic to the Mid/Early Neolithic (c. 13.0-6.0 cal ka BP) in the Catalan Coastal Ranges of NE Iberia: environmental changes, sedimentary processes and human activity

Science.gov (United States)

Bergadà, M. Mercè; Cervelló, Josep M.; Edo, Manel; Cebrià, Artur; Oms, F. Xavier; Martínez, Pablo; Antolín, Ferran; Morales, Juan Ignacio; Pedro, Mireia

2018-03-01

The stratigraphic, sedimentary and palaeoenvironmental features reflected in cavities in the Catalan Coastal Ranges of NE Iberia (Can Sadurní and Guineu caves) characterize the periods of pronounced climatic and human complexity that occurred c. 13.0-6.0 cal ka BP. This includes the stages of the Younger Dryas and Mid/Early Holocene, the latter being one of the periods of so-called Rapid Climatic Changes (RCCs). These caves, like others in Mediterranean contexts, are the result of an old duct originating in the saturated zone of the karst system and open to the outside; recording a succession of different detrital and anthropic episodes of the Epipaleolithic, Mesolithic and Neolithic communities. From this study it can be seen that paleoclimatic events do not always present clear signals in the karst records, especially c. 12.7-7.4 cal ka BP, corresponding to the Epipaleolithic and Mesolithic. It is characterized by a stratigraphic discontinuity in which there are phases with predominantly detrital sedimentation alternating with hiatus intervals. Detrital sedimentation formed by fine material colluvium with gravitational movements or solifluction processes in fresh and humid conditions. It appears in the following chronological intervals: 12.7-12.2 cal ka BP, 11.5/11.1-10.7/10.4 cal ka BP and 8.2-8.0 cal ka BP (less humid). Hiatus phases are represented in the rest of the sequence up to c. 7.4 cal ka BP. From the sedimentary point of view these stages of hiatus are indicative of phases of stability or lack of episodes with seasonal contrasts; a fact that would cause interruptions to detrital deposition in the interior of the caves. In contrast, in the period c. 7.4 to 6.0 cal ka BP, attributed to the Middle and Early Neolithic, there is a certain stratigraphic continuity. From the sedimentary point of view it is distinguished by a variability of processes that responds to accumulative episodes of short duration characteristic of morphogenesis of the slopes in an

Perfil calórico do leite pasteurizado no banco de leite humano de um hospital escola Perfil calórico de la leche pasteurizada en el banco de leche humana de un hospital escuela en Londrina, Paraná, Brasil Caloric profile of pasteurized milk in the human milk bank at a university hospital

Directory of Open Access Journals (Sweden)

Priscila Santa de Moraes

2013-03-01

.846 muestras de leche humana de donantes de varias localidades, totalizando 5.869L de leche recogida y distribuida, siendo que el 55,3% de esta leche humana pasteurizada fue clasificada como hipocalórica (menos que 580kcal/L, el 36,4% como calórico y el 8,3% como hipercalórico (más que 711kcal/L. Conforme a las varias localidades de origen de las leches, el Banco de Leche Humana de Londrina fue el local en el que se observó una mayor cantidad de donación en las tres clasificaciones. Al examen de la titulación de acidez Dornic de la leche humana recogida, se encontró el 60,8%, con valores entre 4,1° y 8,0° Dornic. CONCLUSIONES: Gran parte de la leche recogida es hipocalórica y está propia para el consumo respecto al perfil higiénico sanitario. Es necesario intensificar la recolección de este alimento para atender a la demanda de leche hipocalórica para los recién nacidos prematuros.OBJECTIVE: To verify the caloric and sanitary profile of human milk stored at the Human Milk Bank at Londrina University Hospital. METHODS: Cross-sectional study. Data were obtained from the Human Milk Bank registry regarding the source, the amount collected in liters, the amount of calories by liter assessed by crematocrit, and the acidity of human milk determined by titration in degrees Dornic. RESULTS: Between 2006 and 2009, 30,846 samples of human milk were collected from donors coming from different locations and analyzed. A total of 5,869L of milk were collected and distributed. From the total human pasteurized milk, 53,5% was classified as hypocaloric (711kcal/L. Regarding the several locations where the milk was collected, the Human Milk Bank at Londrina University Hospital was the location in which a larger number of donations were observed in the three classifications. The result of the Dornic test for acidity of the collected milk revealed that 60.8% had 4.1º to 8.0º Dornic. CONCLUSIONS: A large volume of the collected human milk is hypocaloric and appropriate for human

Development of an analytic method for arsenic's determination in lime and tortilla; Desarrollo de un metodo analitico para determinacion de arsenico en cal y tortilla

Energy Technology Data Exchange (ETDEWEB)

Huato Soberanis, Julio; Ogura, Tetsuya [Universidad Autonoma de Guadalajara, Guadalajara, Jalisco (Mexico)

1995-02-01

A spectrophotometric method to determine As in tortilla and lime has been optimized, modifying the AsH{sub 3} generator. The reaction between arsin (AsH{sub 3}){sub 4} and diethyldithiocarbamate of Ag (AgDDC); was followed spectrophotometrically. The conditions under which the As remains in the ash during the calcination of the tortillas were studied. It was found that when they were heated in a quartz tube with a careful control of the air flow and oxygen, as well as the heating temperature, the arsenic loss in minimized. [Spanish] Se ha optimizado el metodo para determinar As en la tortilla y cal mediante espectrometria en el visible del color producido en la reaccion entre Arsina (AsH{sub 3}){sub 4} y dietilditiocarbamato de plata (AgDDC); modificando el generador de AsH{sub 3}. Se han buscado las condiciones en las que el arsenico permanece en las cenizas de la calcinacion de las tortillas; encontrandose que las tortillas deben calentarse en un tubo de cuarzo con control del flujo de aire y oxigeno asi como de la temperatura de calentamiento.

Influencia de un programa terapéutico de pérdida de peso sobre la autopercepción de la imagen corporal en adultos con discapacidad intelectual

Directory of Open Access Journals (Sweden)

Javier Ayaso Maneiro

2014-01-01

Full Text Available Algunos estudios sugieren que las personas con discapacidad intelectual (DI podrían presentar distorsiones en la autopercepción de su imagen corporal. Los objetivos de este estudio fueron investigar si la personas con DI podían identificar correctamente su imagen corporal y determinar si participar en un programa terapéutico de pérdida de peso (PTPP influenció de alguna manera esa percepción. Para ello, a lo largo de un PTPP, se realizó una comparación entre una medida objetiva (IMC y una medida subjetiva (escala de Stunkard de imagen corporal. Los resultados mostraron que los individuos con DI (n = 24 percibieron de manera errónea su imagen corporal incluso antes de la realización de cualquier programa de intervención (58%. Después de aplicar el PTPP durante diez semanas se observó una acentuación de esta distorsión (83% con respecto a los valores reales de IMC. La conclusión más importante que se puede sacar de este estudio es que las personas con DI no identifican correctamente su imagen corporal. Asimismo, la participación en PTPP tiene influencia en la imagen corporal, en el sentido de que el control de dos variables, como el ejercicio físico y la restricción calórica, causa una mayor distorsión que el control de solamente una de ellas.

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...

CalA, a Cyanobacterial AbrB Protein, Interacts with the Upstream Region of hypC and Acts as a Repressor of Its Transcription in the Cyanobacterium Nostoc sp. Strain PCC 7120▿ †

Science.gov (United States)

Agervald, Åsa; Zhang, Xiaohui; Stensjö, Karin; Devine, Ellenor; Lindblad, Peter

2010-01-01

The filamentous, heterocystous, nitrogen-fixing cyanobacterium Nostoc sp. strain PCC 7120 may contain, depending on growth conditions, up to two hydrogenases directly involved in hydrogen metabolism. HypC is one out of at least seven auxiliary gene products required for synthesis of a functional hydrogenase, specifically involved in the maturation of the large subunit. In this study we present a protein, CalA (Alr0946 in the genome), belonging to the transcription regulator family AbrB, which in protein-DNA assays was found to interact with the upstream region of hypC. Transcriptional investigations showed that calA is cotranscribed with the downstream gene alr0947, which encodes a putative protease from the abortive infection superfamily, Abi. CalA was shown to interact specifically not only with the upstream region of hypC but also with its own upstream region, acting as a repressor on hypC. The bidirectional hydrogenase activity was significantly downregulated when CalA was overexpressed, demonstrating a correlation with the transcription factor, either direct or indirect. In silico studies showed that homologues to both CalA and Alr0947 are highly conserved proteins within cyanobacteria with very similar physical organizations of the corresponding structural genes. Possible functions of the cotranscribed downstream protein Alr0947 are presented. In addition, we present a three-dimensional (3D) model of the DNA binding domain of CalA and putative DNA binding mechanisms are discussed. PMID:20023111

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.

Deep water ventilation in the northwestern North Pacific during the last deglaciation and the early Holocene (15-5 cal. kyr B.P.) based on AMS 14C dating

International Nuclear Information System (INIS)

Minoshima, Kayo; Kawahata, Hodaka; Irino, Tomohisa; Ikehara, Ken; Aoki, Kaori; Uchida, Masao; Yoneda, Minoru; Shibata, Yasuyuki

2007-01-01

The difference between benthic and planktonic foraminifera radiocarbon (B-P 14 C) age differences in core PC6 (40 o 23.89' N, 143 o 29.87' E) retrieved from the northwestern North Pacific provide a clue to the reconstruction of deep water circulation during the last deglaciation and the early Holocene (15-5 cal. kyr B.P.). The observed B-P 14 C age differences ranged from 1030 to 1630 years, which are comparable to the present-day apparent ventilation age. It suggested that the ventilation generally remained similar during 15-5 cal. kyr B.P. However, B-P 14 C age difference slightly reduced at 14.6 cal. kyr B.P., indicating that the higher ventilation temporality could have occurred in the northwestern North Pacific (∼2200 m water depth)

Design de interface do ambiente virtual HyperCAL online

Directory of Open Access Journals (Sweden)

Jaire Passos

2010-12-01

Full Text Available A presente pesquisa objetiva propor uma metodologia que oriente o projeto de interface de ambiente virtual centrado no usuário que seja sistematizada como processo de produto com princípios de design de interação, considerando aspectos de usabilidade e ergonomia, de modo a favorecer o trabalho do usuário, permitindo a apropriação do conteúdo e a execução das tarefas através das funcionalidades do sistema. Para consecução do trabalho foram investigados: os elementos da experiência do usuário; as ferramentas de planejamento de produto; as técnicas engenharia de software; e os conceitos do design de interação. A validação da metodologia foi feita através do projeto de interface do módulo do desenvolvedor (professor/instrutor do HyperCalGD online. A interface projetada apresentou melhores condições para o desenvolvimento de materiais educacionais.

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...

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...

Oceanographic profile data using bottle collected during CalCOFI cruises, North Pacific Ocean, 2014-03 to 2015-02 (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...

La banque de la Nouvelle-Calédonie. Existence éphémère, expérience oubliée (1874-1877)

OpenAIRE

Buttet, Catherine

2009-01-01

La Nouvelle-Calédonie, colonie pénale peu peuplée, était en 1870 tributaire des commerçants et du Trésor public pour l'ensemble des opérations bancaires. Née d'une société de colonisation d'initiative privée, la Banque de la Nouvelle-Calédonie fut une expérience distincte des anciennes banques coloniales et dont le nouveau cadre statutaire servit ensuite à la Banque d'Indochine. La banque reçut l'aval du gouvernement sous la forme d'une autorisation puis d'un privilège. Rapidement, la banque ...

Constituents of Propolis: Chrysin, Caffeic Acid, p-Coumaric Acid, and Ferulic Acid Induce PRODH/POX-Dependent Apoptosis in Human Tongue Squamous Cell Carcinoma Cell (CAL-27).

Science.gov (United States)

Celińska-Janowicz, Katarzyna; Zaręba, Ilona; Lazarek, Urszula; Teul, Joanna; Tomczyk, Michał; Pałka, Jerzy; Miltyk, Wojciech

2018-01-01

Propolis evokes several therapeutic properties, including anticancer activity. These activities are attributed to the action of polyphenols. Previously it has been demonstrated, that one of the most abundant polyphenolic compounds in ethanolic extracts of propolis are chrysin, caffeic acid, p -coumaric acid, and ferulic acid. Although their pro-apoptotic activity on human tongue squamous cell carcinoma cells (CAL-27) was established previously, the detailed mechanism of this process remains unclear. Considering the crucial role of proline metabolism and proline dehydrogenase/proline oxidase (PRODH/POX) in the regulation of cancer cell survival/apoptosis, we studied these processes in polyphenol-treated CAL-27 cells. All studied polyphenols evoked anti-proliferative activity, accompanied by increased PRODH/POX, P53, active caspases-3 and -9 expressions and decreased collagen biosynthesis, prolidase activity and proline concentration in CAL-27 cells. These data suggest that polyphenols of propolis induce PRODH/POX-dependent apoptosis through up-regulation of mitochondrial proline degradation and down-regulation of proline utilization for collagen biosynthesis.

Moda rápida na indústria calçadista: intervenção setorial no arranjo produtivo de Nova Serrana

Directory of Open Access Journals (Sweden)

Giancarlo Medeiros Pereira

2014-09-01

Full Text Available Em 2008, fabricantes de calçados da região de Nova Serrana juntamente com seus fornecedores de insumos articularam uma intervenção setorial destinada a aumentar a diversidade da oferta na cadeia de suprimentos, acelerar o desenvolvimento de novos produtos e reduzir os custos dos insumos. A despeito do interesse das partes, a intervenção não produziu os resultados desejados. Este artigo busca entender os motivos que bloquearam tais objetivos. Foram estudados quinze fabricantes de calçados e quinze fornecedores de insumos. O método de pesquisa foi o estudo de caso múltiplo. Em sessões de grupos focados com os empresários, foi construída uma estrutura de construtos e variáveis que desvelou a inter-relação entre a flexibilidade de suprimento e o desenvolvimento de produtos. Os achados sugerem que a demanda por exclusividade de insumos, imposta pelos grandes fabricantes de calçados, a possibilidade de conflito com os representantes dos grandes e médios fornecedores de insumos, o receio de cópia das criações, a desatenção a demandas locais e o desempenho insatisfatório em entregas causaram o insucesso da intervenção.

The 3000-4000 cal. BP anthropogenic shift in fire regime in the French Pyrenees.

Science.gov (United States)

Rius, D.; Vannière, B.; Galop, D.; Richard, H.

2009-04-01

Fire is a key disturbing agent in a wide range of ecosystems: boreal biome (Pitkanen, 2000), Mediterranean area (Colombaroli et al., 2008) as well as temperate European mountain zones (Tinner et al., 1999). During the Holocene, climate may control fire regime by both ignition and fire spread-favouring conditions (i.e. composition, structure and moisture of biomass) whereas man may change charcoal accumulation patterns through type and intensity of agro-pastoral activities. In western and Mediterranean Europe, single sites charcoal analysis recorded the anthropogenic forcing over fire regime broadly between the mid and the late-Holocene. Turner et al (2008) showed that climate and fire had been disconnected since 1700 cal. BP in Turkey. In central Swiss, Mean Fire Interval decreased by two times 2000 years ago due to increasing human impact (Stahli et al., 2006). In Italy, climate and man have had a combined influence on fire-hazard since ca 4000 cal. BP (Vannière et al., 2008). In the Pyrenees Mountains, the linkage between agro-pastoral practices and fire could be dated back to ca 4000-3000 cal. BP with a clear succession of a clearance phase (high fire frequency) followed by a quite linear trend throughout Middle Ages and Modern times corresponding to a change in fire use (Vanniere et al., 2001; Galop et al., 2002, Rius et al., in press). The quantification of fire regimes parameters such as frequency with robust methodological tools (Inferred Fire Frequency, Mean Fire Interval) is needed to understand and characterise such shifts. Here we present two sequences from the Lourdes basin (col d'Ech peat bog) and from the occidental Pyrenees (Gabarn peat bog), which cover the last 9000 years with high temporal resolution. The main goals of this study were to (1) assess control factors of fire regime throughout the lateglacial and Holocene (climate and/or man) on the local scale, (2) evidence the local/regional significance of these control factors , (3) discuss the

Fertilidad de los suelos de la explotación Cal Martí de Gàver

OpenAIRE

Moreno Zeymer, Martín

2015-01-01

The study on soil fertility of the farm Cal Martí was performed to obtain objective results on the management of soil fertility. It also was tested the hypothesis that fertility in relation to soil organic matter increases in soil covered with permanent forage crops. There were executed different type of balances (humus, nitrogen, phosphorus and potassium) of the farm and there were analysed different parameters (texture, pH, EC, organic matter, macronutrients and micronutrients) of pieces of...

TEM study of soot, organic aerosol, and sea-salt particles collected during CalNex

Science.gov (United States)

Adachi, K.; Buseck, P. R.

2010-12-01

Anthropogenic aerosol particles are emitted in abundance from megacities. Those particles can have important effects on both human health and climate. In this study, aerosol particles having aerodynamic diameters between 50 and 300 nm were collected during the CalNex campaign at the Pasadena ground site from May 15 to June 15, 2010, ~15 km northeast of downtown Los Angeles. The samples were analyzed using transmission electron microscopes (TEMs) to characterize particle shapes and compositions. Most samples are dominated by soot, organic aerosol (OA), sulfate, sea salt, or combinations thereof. Sizes and amounts of OA particles increased during the afternoons, and most soot particles were internally mixed with OA and sulfate in the afternoons. The proportion of soot to other material in individual particles increased and soot particles were more compact during the nights and early mornings. Sea-salt particles were commonly internally mixed with other materials. They have high Na contents with lesser N, Mg, S, K, and Ca and almost no Cl, suggesting that the Cl was replaced by sulfate or nitrate in the atmosphere. There is less OA and more sea salt and sulfate in the CalNex samples than in the samples from Mexico City that were collected during the MILAGRO campaign. Our study indicates that compositions of internally mixed aerosol particles and shapes of soot particles change significantly within a day. These changes probably influence the estimates of their effects on human health and climate.

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...

On-Detector Electronics for the ATLAS TileCal Demonstrator

CERN Document Server

Muschter, Steffen Lothar; The ATLAS collaboration; Anderson, Kelby; Bohm, Christian; Drake, Gary; Oreglia, Mark; Paramonov, Alexander; Tang, Fukun

2014-01-01

In the major upgrade of the LHC and its detectors around year 2023 the beam energy and luminosity will increase significantly. For TileCal, the hadron calorimeter in ATLAS, most of the on-detector and off-detector electronics will be replaced. A new design has been proposed with some alternative solutions for some of the parts. To gain experience with this design, a demonstrator project is on-going aiming at inserting a prototype module in ATLAS this summer or in the next possible shut-down. A caveat is that it must be able to operate seamlessly with the present system. This together with test beam studies will help to finalize the design. The on-detector part of the demonstrator electronics contains five parts: new front-end boards, digitizer boards with a link daughter board, a programmable high voltage power supply and a redundant low voltage power supply. Apart from improved performance reliability is a main concern. This will be achieved by increased modularity so that the consequences of a complete fail...

On-Detector Electronics for the ATLAS TileCal Demonstrator

CERN Document Server

Muschter, Steffen Lothar; The ATLAS collaboration; Akerstedt, Henrik; Anderson, Kelby; Bohm, Christian; Drake, Gary; Oreglia, Mark; Paramonov, Alexander; Tang, Fukun

2016-01-01

In the major upgrade of the LHC and its detectors around year 2023 the beam energy and luminosity will increase significantly. For TileCal, the hadron calorimeter in ATLAS, most of the on-detector and off-detector electronics will be replaced. A new design has been proposed with some alternative solutions for some of the parts. To gain experience with this design, a demonstrator project is on-going aiming at inserting a prototype module in ATLAS this summer or in the next possible shut-down. A caveat is that it must be able to operate seamlessly with the present system. This together with test beam studies will help to finalize the design. The on-detector part of the demonstrator electronics contains five parts: new front-end boards, digitizer boards with a link daughter board, a programmable high voltage power supply and a redundant low voltage power supply. Apart from improved performance reliability is a main concern. This will be achieved by increased modularity so that the consequences of a complete fail...

Análisis arqueomalacológico del depósito mesolítico de la cueva de El Truchiro (Omoño, Cantabria)

OpenAIRE

Álvarez-Fernández, E.; Aparicio Alonso, María Teresa; Cueto, Marian; Ontañón, Roberto; Armendáriz, Ángel

2012-01-01

En la Zona Arqueológica de La Garma (Omoño, Cantabria) se han excavado diferentes yacimientos con cronologías que van desde el Paleolítico inferior hasta la Edad Media. En uno de ellos, la cueva de El Truchiro, se documentó un nivel mesolítico (nivel II) datado en el VIII milenio cal BC con gran abundancia de restos animales (mamíferos, moluscos, crustáceos y equinodermos). En su interior se halló una tumba de un individuo juvenil datada a comienzos del VI milenio cal BC. En esta comunicación...

First observation of the decay $\\bar{B}^0_s \\to D^0 K^{*0}$ and a measurement of the ratio of branching fractions $\\frac{{\\cal B}(\\bar{B}^0_s \\to D^0 K^{*0})}{{\\cal B}(\\bar{B}^0 \\to D^0 \\rho^0)}$

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, 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; 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; 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; Brisbane, S; Britsch, M; Britton, T; Brook, N H; Brown, H; Büchler-Germann, A; Burducea, I; Bursche, A; Buytaert, J; Cadeddu, S; Caicedo Carvajal, J M; 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; 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; Conti, G; Contu, A; Cook, A; Coombes, M; Corti, G; Cowan, G A; Currie, R; D'Almagne, B; D'Ambrosio, C; David, P; De Bonis, I; 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; Deissenroth, M; Del Buono, L; Deplano, C; Deschamps, O; Dettori, F; Dickens, J; Dijkstra, H; Diniz Batista, P; Domingo Bonal, F; Donleavy, S; Dosil Suárez, A; Dossett, D; Dovbnya, A; Dupertuis, F; Dzhelyadin, R; Easo, S; Egede, U; Egorychev, V; Eidelman, S; van Eijk, D; Eisele, F; Eisenhardt, S; Ekelhof, R; Eklund, L; Elsasser, Ch; d'Enterria, D G; Esperante Pereira, D; Estéve, L; 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; 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; 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; Haefeli, G; Haen, C; Haines, S C; Hampson, T; Hansmann-Menzemer, S; Harji, R; Harnew, N; Harrison, J; Harrison, P F; He, J; Heijne, V; Hennessy, K; Henrard, P; Hernando Morata, J A; van Herwijnen, E; Hicks, E; Hofmann, W; 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; Kandybei, S; Karacson, M; Karbach, T M; Keaveney, J; Kerzel, U; Ketel, T; Keune, A; Khanji, B; Kim, Y M; Knecht, M; Koblitz, S; Koppenburg, P; Kozlinskiy, A; Kravchuk, L; Kreplin, K; Kreps, M; Krocker, G; Krokovny, P; Kruse, F; Kruzelecki, K; Kucharczyk, M; Kukulak, S; Kumar, R; 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; Le Gac, R; van Leerdam, J; Lees, J-P; Lefévre, 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; Lopes, J H; Lopez Asamar, E; Lopez-March, N; Luisier, J; 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; Mclean, C; Meissner, M; Merk, M; Merkel, J; Messi, R; Miglioranzi, S; Milanes, D A; Minard, M-N; Monteil, S; Moran, D; Morawski, P; Mountain, R; Mous, I; Muheim, F; Müller, K; Muresan, R; Muryn, B; Musy, M; Mylroie-Smith, J; Naik, P; Nakada, T; Nandakumar, R; Nardulli, J; Nasteva, I; Nedos, M; Needham, M; Neufeld, N; Nguyen-Mau, C; Nicol, M; Nies, S; Niess, V; Nikitin, N; Nomerotski, A; Oblakowska-Mucha, A; Obraztsov, V; Oggero, S; Ogilvy, S; Okhrimenko, O; Oldeman, R; Orlandea, M; Otalora Goicochea, J M; Owen, P; Pal, K; Palacios, J; Palano, A; Palutan, M; Panman, J; Papanestis, A; Pappagallo, M; Parkes, C; Parkinson, C J; Passaleva, G; Patel, G D; Patel, M; Paterson, S K; Patrick, G N; Patrignani, C; Pavel-Nicorescu, C; Pazos Alvarez, A; Pellegrino, A; Penso, G; Pepe Altarelli, M; Perazzini, S; Perego, D L; Perez Trigo, E; Pérez-Calero Yzquierdo, A; Perret, P; Perrin-Terrin, M; Pessina, G; Petrella, A; Petrolini, A; Picatoste Olloqui, E; Pie Valls, B; Pietrzyk, B; Pilar, T; Pinci, D; Plackett, R; Playfer, S; Plo Casasus, M; Polok, G; Poluektov, A; Polycarpo, E; Popov, D; Popovici, B; Potterat, C; Powell, A; du Pree, T; Prisciandaro, J; Pugatch, V; Puig Navarro, A; Qian, W; Rademacker, J H; Rakotomiaramanana, B; Rangel, M S; Raniuk, I; Raven, G; Redford, S; Reid, M M; dos Reis, A C; Ricciardi, S; Rinnert, K; Roa Romero, D A; Robbe, P; Rodrigues, E; Rodrigues, F; Rodriguez Perez, P; Rogers, G J; Roiser, S; Romanovsky, V; Rosello, M; Rouvinet, J; Ruf, T; Ruiz, H; Sabatino, G; Saborido Silva, J J; Sagidova, N; Sail, P; Saitta, B; Salzmann, C; Sannino, M; Santacesaria, R; Santinelli, R; Santovetti, E; Sapunov, M; Sarti, A; Satriano, C; Satta, A; Savrie, M; Savrina, D; Schaack, P; Schiller, M; Schleich, S; Schmelling, M; Schmidt, B; Schneider, O; Schopper, A; Schune, M -H; Schwemmer, R; Sciascia, B; Sciubba, A; Seco, M; Semennikov, A; Senderowska, K; Sepp, I; Serra, N; Serrano, J; Seyfert, P; Shao, B; Shapkin, M; Shapoval, I; Shatalov, P; Shcheglov, Y; Shears, T; Shekhtman, L; Shevchenko, O; Shevchenko, V; Shires, A; Silva Coutinho, R; Skottowe, H P; Skwarnicki, T; Smith, A C; Smith, N A; Smith, E; Sobczak, K; Soler, F J P; Solomin, A; Soomro, F; Souza De Paula, B; Spaan, B; Sparkes, A; Spradlin, P; Stagni, F; Stahl, S; Steinkamp, O; Stoica, S; Stone, S; Storaci, B; Straticiuc, M; Straumann, U; Styles, N; Subbiah, V K; Swientek, S; Szczekowski, M; Szczypka, P; Szumlak, T; T'Jampens, S; Teodorescu, E; Teubert, F; Thomas, C; Thomas, E; van Tilburg, J; Tisserand, V; Tobin, M; Topp-Joergensen, S; Torr, N; Tran, M T; Tsaregorodtsev, A; Tuning, N; Ukleja, A; Urquijo, P; Uwer, U; Vagnoni, V; Valenti, G; Vazquez Gomez, R; Vazquez Regueiro, P; Vecchi, S; Velthuis, J J; Veltri, M; Vervink, K; Viaud, B; Videau, I; Vilasis-Cardona, X; Visniakov, J; Vollhardt, A; Voong, D; Vorobyev, A; Voss, H; Wacker, K; Wandernoth, S; Wang, J; Ward, D R; Webber, A D; Websdale, D; Whitehead, M; Wiedner, D; Wiggers, L; Wilkinson, G; Williams, M P; Williams, M; Wilson, F F; Wishahi, J; Witek, M; Witzeling, W; Wotton, S A; Wyllie, K; Xie, Y; Xing, F; Xing, Z; Yang, Z; Young, R; Yushchenko, O; Zavertyaev, M; Zhang, L; Zhang, W C; Zhang, Y; Zhelezov, A; Zhong, L; Zverev, E; Zvyagin, A

2011-01-01

The first observation of the decay $\\bar{B}^0_s \\to D^0 K^{*0}$ using $pp$ data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36 pb$^{-1}$, is reported. A signal of $34.4 \\pm 6.8$ events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The $\\bar{B}^0_s \\to D^0 K^{*0}$ branching fraction is measured relative to that of $\\bar{B}^0 \\to D^0 \\rho^0$: $\\frac{{\\cal B}(\\bar{B}^0_s \\to D^0 K^{*0})}{{\\cal B}(\\bar{B}^0 \\to D^0 \\rho^0)} = 1.48 \\pm 0.34 \\pm 0.15 \\pm 0.12$, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the $B^0$ and $B^0_s$ hadronisation fractions.

Uso de cal virgem para o controle de Salmonella spp. e Clostridium spp. em camas de aviário Quicklime for controlling Salmonella spp. and Clostridium spp in litter from floor pens of broilers

Directory of Open Access Journals (Sweden)

Marcos Antonio Dai Pra

2009-07-01

Full Text Available O objetivo deste trabalho foi avaliar a eficácia do uso de cal virgem (CaO para a redução de Salmonella spp. e Clostridium spp. em cama de aviário. Foram aplicados quatro tratamentos: T1- sem adição de cal virgem (controle, T2- aplicação de cal virgem na dose de 300g m-2, T3- aplicação de cal virgem na dose de 600g m-2 e T4- aplicação de cal virgem na dose de 900g m-2. Os valores médios observados para o pH da cama após o 12° dia de aplicação de cal virgem foram 8,95 e 9,91, 10,75 e 11,11 para os tratamentos 1, 2, 3 e 4, respectivamente. O número mais provável Log10 (UFC de Salmonella spp. e Clostridium spp foi reduzido em 82 e 97% com a aplicação de cal na dosagem de 300g m-2 e 100% na dosagem de 600 e 900g m-2, ambos diferindo significativamente em relação ao controle (antes da aplicação da cal. A atividade de água da cama reduziu progressivamente (de 0,2 a 3,82% com a utilização de níveis crescentes de cal. Conclui-se que o uso da cal na cama de aviário, mesmo nas doses mais baixas, reduz o número mais provável de Salmonella e Clostridium ssp.This study aimed to evaluate the efficacy of quicklime (CaO for reducing Salmonella and Clostridium spp. population in used litter from floor pens of broilers. Four treatments were tested: (T1 control (without quicklime; (T2 300g quicklime m-2; (T3 600g quicklime m-2; and (T4 900g quicklime m-2. The following average pH values were observed 12 days after adding quicklime: 8.95, 9.91, 10.75 and 11.11 for treatments 1, 2, 3 and 4, respectively. An 82 and 97% reduction in the most probable number Log10 (CFU of Salmonella and Clostridium spp, respectively, was observed when 300g m-2 of quicklime was added to the used litter from floor pens of broilers. Additionally, a 100% reduction was obtained when both 600 and 900g m-2 of quicklime were added, differing significantly from control (before adding quicklime. A progressive reduction in water activity (from 0.2 to 3.82% was

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

International Nuclear Information System (INIS)

Yoshinaga, Toshiaki; Kibushi, Haruo; Kitaur, Ayumu

1998-01-01

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)

The Microwave-assisted Synthesis of Polyethersulfone (PES as A Matrix in Immobilization of Candida antarctica Lipase B (Cal-B

Directory of Open Access Journals (Sweden)

Khusna Widhyahrini

2017-10-01

How to Cite: Widhyahrini, K., Handayani, N., Wahyuningrum, D., Nurbaiti, S., Radiman, C.L. (2017. The Microwave-assisted Synthesis of Polyethersulfone (PES as A Matrix in Immobilization of Candida antarctica Lipase B (Cal-B. Bulletin of Chemical Reaction Engineering & Catalysis, 12(3: 343-350 (doi:10.9767/bcrec.12.3.774.343-350

Analog Readout and Digitizing System for ATLAS TileCal Demonstrator

CERN Document Server

Tang, F; The ATLAS collaboration

2014-01-01

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...

A inserção do design e da gestão de design : estudo de caso em uma indústria calçadista gaúcha

OpenAIRE

Galina, Andréa Capra; Bernardes, Mauricio Moreira e Silva

2012-01-01

O calçado gaúcho está perdendo mercado exportador considerando-se o número de pares exportados, porém esse segmento pertence ao estado brasileiro com maior faturamento gerado da exportação. Nesse contexto, o design assume um importante papel na gestão, promovendo a integração entre todos os setores, agindo em nível estratégico. Diante disso, este artigo, ao propor um estudo de caso baseado no modelo praticado por uma empresa calçadista do Rio Grande do Sul, busca entender como ocorre nesse es...

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

OpenAIRE

Simonete,Marcia Aparecida; Chaves,Djalma Miler; Teixeira,Claudia Fernanda Almeida; Moro,Leticia; Neves,Cíntia Urbano

2013-01-01

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...

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 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.......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...

Layered growth model and epitaxial growth structures for SiCAlN alloys

International Nuclear Information System (INIS)

Liu Zhaoqing; Ni Jun; Su Xiaoao; Dai Zhenhong

2009-01-01

Epitaxial growth structures for (SiC) 1-x (AlN) x alloys are studied using a layered growth model. First-principle calculations are used to determine the parameters in the layered growth model. The phase diagrams of epitaxial growth are given. There is a rich variety of the new metastable polytype structures at x=1/6 ,1/5 ,1/4 ,1/3 , and 1/2 in the layered growth phase diagrams. We have also calculated the electronic properties of the short periodical SiCAlN alloys predicted by our layered growth model. The results show that various ordered structures of (SiC) 1-x (AlN) x alloys with the band gaps over a wide range are possible to be synthesized by epitaxial growth.

Adequação de calçadas e travessias às condições mínimas de acessibilidade : um procedimento para estimativa de custos de serviços e obras

OpenAIRE

Pablo José Martinelli Guerreiro

2008-01-01

Esta dissertação apresenta um procedimento para determinação de custos de adequação de calçadas e travessias urbanas através da quantificação dos custos dos serviços necessários a realização das obras de reparos ou da reconstrução total de um trecho de calçada, além da adequação da travessia. O levantamento dos serviços necessários foi feito utilizando-se como padrão de projeto as especificações constantes do manual do projeto Calçada Cidadã da Prefeitura Municipal de Vitória ES. A avaliação ...

Evaluación de la reducción de pelets utilizando carbón como agente reductor

Directory of Open Access Journals (Sweden)

Sandra Patricia Pérez Velásquez Alfonso López Díaz

2010-11-01

Full Text Available La obtención del acero se realiza a partir del mineralde hierro o de  la chatarra. En el primer caso el procesotiene lugar vía alto horno–convertidor; en el segundo,vía horno  eléctrico de  arco. Sin  embargo,  al hornoeléctrico también se pueden cargar los denominadospelets  prerreducidos  de  minerales  de  hierro,materiales metálicos  que  pueden  ser  obtenidos  apartir de  finos de mineral de hierro  (portador de  lacarga metálica,  finos de  carbón  (agente  reductor,finos  de  cal  (agente  desulfurante  y  bentonita(aglomerante, los cuales son convertidos en ovoidesmediante el empleo de un disco peletizador. El trabajomuestra  la  caracterización  realizada  a  las materiasprimas,  los  ensayos  de  reducibilidad  efectuados  apelets cargados en un horno tipo Linder –fabricadosa partir de dos yacimientos colombianos de mineralesde  hierro–  y  el  diseño  y  construcción  de  un  hornopara evaluar el comportamiento de los pelets durantela  reducción. Describe  los  equipos  y  analiza  sus

Caracterización de un material compuesto por suelo arenoso, ceniza de cáscara de arroz y cal potencialmente útil para su uso en pavimentación Characterization of a material comprised of sandy soil, rice husk ash and potentially useful lime in pavements

Directory of Open Access Journals (Sweden)

Leonardo Behak

2008-04-01

Full Text Available Se presenta una investigación de caracterización de una mezcla de suelo arenoso con ceniza de cáscara de arroz (CCA y cal. El objetivo fue estudiar las propiedades físicas y mecánicas de las mezclas, procurando encontrar una solución económica para pavimentos de bajo volumen de tránsito y resolver el problema ambiental de la disposición de la ceniza residual de la quema de la cáscara de arroz. El suelo arenoso fue extraído de las proximidades de Montevideo. Fue utilizada una CCA residual de la incineración de cascara, realizada en un horno de una planta de parboilización de arroz localizada en la Ciudad de Treinta y Tres. Se realiza un análisis de la influencia de diferentes mezclas de suelo con CCA y cal en la composición mineralógica mediante difractogramas de rayos-x, parámetros óptimos de compactación, CBR, resistencia a la compresión inconfinada y a la tracción diametral y durabilidadAn investigation of characterization of a sandy soil mixture with rice husk ash (RHA and lime is presented. Their objective was to study the physic and mechanic properties of the mixtures, trying to find an economical solution for low-volume transit pavements and to solve an environmental problem like is the deposition of the residual ash from de husk rice burning. The soil was extract in the nearness of Montevideo. A residual RHA of the husk incineration, carried out in an oven of the rice parboilization plant localized in Treinta y Tres City, was used. An analysis of the influence of different mixtures of soil with RHA and lime in the mineralogical composition by x-ray difractograms, optimum compaction parameters, CBR, unconfined compression and split tensile strength and durability is made

Análisis comparativo experimental de algunos morteros de restauración

OpenAIRE

Riera Juan, Santiago; Gonçalves Soares, Miguel Angelo

2010-01-01

En el presente documento se estudia el mortero de cal, material de construcción fundamental desde la época Helénica (ss. II y I a.C.) hasta la introducción y la utilización masiva del cemento portland desde finales del s. XVIII, que relega a un minúsculo segundo plano la milenaria tradición constructiva con mortero de cal. Concretamente se estudian algunos morteros de cal pre-dosificados que ofrece el mercado actual, destinados a obras de restauración. Se expone un estudio objetiv...

Redução do impacto ambiental: uma abordagem no setor de modelagem em uma empresa calçadista

Directory of Open Access Journals (Sweden)

carlos Augusto Nascimento

2016-12-01

Full Text Available Este artigo apresenta os resultados de uma pesquisa quali-quantitativa de caráter exploratório e de natureza aplicada, realizada no setor de modelagem de uma empresa calçadista, com a finalidade de implantar um novo fluxo processual para gestão de resíduos e de materiais sobressalentes. Para a elaboração do projeto empregou-se metodologia DMAIC, ferramentas da qualidade, ecodesign e a ferramenta 3Rs, visando à redução da variação do processo de maneira a incorporar ações sustentáveis, que permitam a diminuição do custo industrial. Como resultado, obteve-se a redução de passivo ambiental do estoque em processo, da baixa eficiência produtiva, das perdas energéticas e maior desempenho econômico-financeiro, por meio da fabricação de calçados, com o uso de resíduos e materiais sobressalentes e de novo material reciclável para a utilização em gabaritos produtivos.

Aplicação de ferramentas Lean numa PME do setor do calçado

OpenAIRE

Teixeira, Ricardo Jorge Leite

2017-01-01

Dissertação de mestrado em Engenharia Industrial (área de especialização em Gestão Industrial) A indústria do calçado, é, ainda, uma indústria com uma forte componente de trabalho manual, operações sistemáticas e uma extensa cadeia produtiva. Nesse sentido, não raras vezes, problemas associados a longos leads times, estrangulamentos no fluxo produtivo e grandes quantidades de produto em vias de fabrico estão presentes no quotidiano de muitas organizações que operam no setor. Ne...

Application of CalME incremental-recursive method to the evaluation of the structural condition as asphalt pavements

International Nuclear Information System (INIS)

Mateos Moreno, A.; Perez Ayuso, J.; Cadavid Jauregui, B.; Marron Fernandez, J. O.

2011-01-01

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.

Neolithisation of the Aegean and Southeast Europe during the 6600–6000 calBC period of Rapid Climate Change

Directory of Open Access Journals (Sweden)

Bernhard Weninger

2014-12-01

Full Text Available In extension of the recently established ‘Rapid Climate Change (RCC Neolithisation Model’ (Clare 2013, in the present paper we demonstrate the existence of a remarkable coincidence between the exact (decadel-scale entry and departure dates of the Neolithic into/from the Aegean (~6600/6050 calBC with begin/end of RCC-conditions.

Influencia de los materiales cementantes suplementarios sobre la cinética de transporte de agua y las propiedades mecánicas de cal hidratada y morteros de cemento

OpenAIRE

Ince, C.; Derogar, S.; Michelitsch, T. M.

2015-01-01

El objetivo de este artículo es investigar el papel de los materiales cementantes suplementarios (SCMs) en la cinética de transporte del agua y en las propiedades mecánicas de los morteros de cal hidratada (CL90) y cemento Portland. Las propiedades de la cal hidratada son significativamente diferentes a las del cemento y por lo tanto el control de las propiedades de los morteros frescos y endurecidos es fundamental en la optimización mortero/substrato en albañilería. Los parámetros estudiados...

CORRELATION OF MORPHOLOGICAL CHA RACTERISTICS STUDENTS WITH SUCCESS IN PERFORMAnCE OF FOLK DANCES

Directory of Open Access Journals (Sweden)

Amra Nožinović Mujanović

2007-05-01

Full Text Available On the sam ple of 121stu dent from se cond and third gra de of Fa culty of physi cal edu ca tion and sport, is be ing me a su red by using 20 va ri a bles of morp ho lo gi cal cha racte ri stics and 4 va ri a bles for esti ma tion of the suc cess in per for ming the folk dan ces, with the aim to de ter mi ne the ir con nec tion to the re sults of the esti ma ted va lue from the practi cal part of Folk dan ce lec tu ring. Ba sed on pre sen ted re sults, by ca no nic cor re la tion analysis in ma ni fe sted spa ce, ma jor part of pre dic tion gro up is in vol ved in va ri a bi lity of suc cess of cri te ria va ri a ble what con fi rms one im por tant ca no nic par of fac tors (Ca noni cal R .40.

con dietas suplementadas con Cromo-L-metionina

Directory of Open Access Journals (Sweden)

Ram\\u00F3n Garc\\u00EDa-Castillo

2006-01-01

Full Text Available Un total de 48 cerdos (Sus scrofa domesticus; 24 machos castrados y 24 hembras cruzados (Yorkshire, Hampshire, Duroc y Landrace de 3,5 a 4,0 meses de edad y 60,0 ± 5,0 kg PV en finalización. Se alimentaron con dietas isoproteícas (14,5 % PC e isoenergéticas (3.400 kcal EM/kg de MS, adicionadas con Cr-L-metionina (MiCroPlex® (0, 200, 400 y 600 ppb. El experimento tuvo una duración de 45 días y se realizó de agosto a noviembre del 2002 en las instalaciones de la Universidad Autónoma Agraria Antonio Narro, localizada en Saltillo, Coahuila, México. Al tener los animales aproximadamente 95 kg PV, se tomó muestra de 15 ml de sangre por cada animal para determinar la concentración de glucosa, ácido úrico, creatinina, urea, proteinas totales y colesterol. Se aplicó un diseño completamente al azar con arreglo factorial 2 x 4; dos para el factor sexo y cuatro para nivel de cromo. Los metabolitos en suero no fueron afectados (P>0,05 por el factor sexo. La glucosa en suero disminuyó (P<0,05 y el colesterol incrementó (P<0,05 con cromo en la dieta. Se concluye que el Cr incrementa el metabolismo de glucosa y disminuye el de colesterol, con lo cual puede haber energía disponible para síntesis de proteína la cual es necesaria para el crecimiento de los animales

Efecto de la restricción calórica en la composición corporal, la estructura muscular y la eficiencia de la cadena respiratoria mitocondrial en el deportista

OpenAIRE

Pons Sala, Victoria

2017-01-01

[spa]Introducción: Se propone trabajar sobre un modelo de Restricción Calórica (RC) o Dieta del Ayuno Intermitente o Intermitent Fasting Diet, que consideramos una buena opción para perder peso en determinadas circunstancias e individuos. Se considera RC cuando establecen periodos intemitentes de 16-48h de ayuno o de restricción del 30 al 60% del contenido calórico, respecto a la ingesta habitual, que por otra parte se mantiene sin modificaciones entre estos periodos. Estudios recientes en ...

Avaliação da introdução de cal hidratada nas argamassas aplicadas sobre blocos cerâmicos e sua influência no desempenho e morfologia

OpenAIRE

Giuliano Polito

2008-01-01

Este trabalho investiga a resistência de aderência de revestimentos argamassados sobre a alvenaria de blocos cerâmicos, concentrando-se na análise da microestrutura da interface argamassa/substrato, correlacionando-se ao comportamento mecânico da argamassa e à adição de cal hidratada na argamassa. Neste estudo foram avaliados cinco traços distintos, composto de cimento:cal:areia (1:0:6; 1:1:6; 1:2:8; 1:2:10; 0:1:6), aplicados sobre substrato de bloco cerâmico seco, com a utilização de técnica...

The CAL: cognitive, apperceptive and representative aspects of fashion design - Side note to neuroaesthetic theory

Science.gov (United States)

Csanák, Edit

2017-10-01

This article deals with the creative and cognitive process of the creative work from the aspect of fashion design. It is examined through the Cognitive-Apperceptive-Limn process (The CAL), analysing the stages of design work referring to prominent literature, and discussing exciting theories, such the FLOW and the AHA effects are, and the neuro aesthetic theory. Setting them into a new context, the article offers a fresh approach of a designer, rather than a scientific statement based on pragmatic findings. Since theories on artistic performance and creativity can never be enough ‘empirical’, and the process can be never understood enough well…

Cemento adicionado con un residuo del proceso de craqueo catalítico (FCC: hidratación y microestructura

Directory of Open Access Journals (Sweden)

Silvia Izquierdo

2013-08-01

Full Text Available El presente trabajo estudia el efecto de la incorporación de un residuo procedente de la industria petroquímica denominado catalizador gastado del craqueo catalítico (FCC en la hidratación y microestructura de pastas cementicias. Se utilizan como materiales de referencia, además del cemento portland (OPC, dos tipos de adición de alto desempeño, metacaolín (MK y humo de sílice (HS. La caracterización de los productos de hidratación se realizó por medio de difracción de rayos X (DRX, análisis termogravimétrico (TG, microscopia electrónica de barrido (SEM y resonancia magnética nuclear (NMR. Se complementa este estudio con la evaluación de la resistencia mecánica a compresión de morteros a edad hasta de 90 días. Los resultados indican que los principales productos de hidratación en las pastas adicionadas con FCC son silicato cálcico hidratado (CSH, aluminatos cálcicos hidratados (CAH y silicoaluminatos cálcicos hidratados (CASH. Pastas con 10% de FCC reportan un consumo de cal del 61% a edad de 360 días de curado, valor muy superior al reportado por las adiciones de MK y HS en la misma proporción, esto indica una mayor reactividad del FCC, que incluso se manifiesta a edades tempranas. Cabe anotar que, considerando el factor de dilución, la incorporación de un 10% de FCC como reemplazo del cemento contribuye a la resistencia del material adicionado en órdenes de hasta un 30%. Esto es un indicativo del uso potencial de este residuo como material suplementario en mezclas cementicias.

Woody vegetation, fuel and fire track the melting of the Scandinavian ice-sheet before 9500 cal yr BP

Science.gov (United States)

Carcaillet, Christopher; Hörnberg, Greger; Zackrisson, Olle

2012-11-01

New studies indicate the presence of early Holocene ice-free areas far north in Scandinavia. Post-glacial fire and vegetation were investigated based on sedimentary charcoal and pollen from two small lakes in northern Sweden. Accumulation of organic sediment started around 10,900 and 9200 cal yr BP, showing that both lake valleys were ice-free extremely early given their northerly location. Fire events started after 9600 cal yr BP and became less common around the '8.2-ka event'. Woody vegetation provided fuel that contributed to fires. The first vegetation in our pollen record consisted of Hippophae, Dryas, grasses and sedges. Subsequently broadleaved trees (Betula, Salix) increased in abundance and later Pinus, Alnus, ferns and Lycopodium characterized the vegetation. Pollen from Larix, Picea and Malus were also found. The change in vegetation composition was synchronous with the decrease in lake-water pH in the region, indicating ecosystem-scale processes; this occurred during a period of net global and regional warming. The changes in fire frequency and vegetation appear independent of regional trends in precipitation. The reconstructed fire history and vegetation support the scenario of early ice-free areas far north in Scandinavia during early Holocene warming, creating favorable conditions for woody plants and wildfires.

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...

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.

Aplicaciones prácticas de la espectroscopía de absorción infrarroja en el estudio de los crudos, del clínker y del cemento portland anhidro

Directory of Open Access Journals (Sweden)

Vázquez, Tomás

1979-09-01

Full Text Available Not avaible

Con la presente publicación se inicia una serie de trabajos que pretenden ofrecer una visión práctica de la espectroscopía IR al aplicarla al estudio de las materias primas y del clínker y cemento portland. La aplicación principal de la espectroscopía IR se realiza sobre la Investigación dentro del ámbito de la Química del Cemento. Pensamos que la moderna industria del cemento necesariamente tendrá que acudir al empleo de esta técnica: el aumento constante de los precios de las materias primas, la carestía y la evolución de los costes de la energía, etc., lleva a la necesidad del conocimiento exhaustivo de los materiales y de sus procesos de transformación, para conseguir su máximo aprovechamiento. Este trabajo abarcará en su aspecto práctico el estudio de crudos empleados en la fabricación del clínker (caliza y arcilla, del propio clínker portland, del cemento anhidro con yeso, hemihidrato y/o singenita, de las adiciones inertes y activas (puzolanas, escorias y cenizas volantes así como del cemento con estas adiciones. Para la comprensión del mismo pensamos que es necesario dar una serie de consideraciones teóricas que se intentará sean lo más escuetas posibles.

Spectral analysis of the IntCal98 calibration curve: a Bayesian view

International Nuclear Information System (INIS)

Palonen, V.; Tikkanen, P.

2004-01-01

Preliminary results from a Bayesian approach to find periodicities in the IntCal98 calibration curve are given. It has been shown in the literature that the discrete Fourier transform (Schuster periodogram) corresponds to the use of an approximate Bayesian model of one harmonic frequency and Gaussian noise. Advantages of the Bayesian approach include the possibility to use models for variable, attenuated and multiple frequencies, the capability to analyze unevenly spaced data and the possibility to assess the significance and uncertainties of spectral estimates. In this work, a new Bayesian model using random walk noise to take care of the trend in the data is developed. Both Bayesian models are described and the first results of the new model are reported and compared with results from straightforward discrete-Fourier-transform and maximum-entropy-method spectral analyses

Tratamiento con implantes Leader-Nano en paciente con oligodoncia

Directory of Open Access Journals (Sweden)

Salvador Javier Santos Medina

2015-03-01

Full Text Available Los implantes dentales de titanio han revolucionado el mundo de la rehabilitación desde su surgimiento. De manera particular, el empleo de implantes de carga inmediata acorta el tiempo quirúrgico y protésico, con el consiguiente bienestar estético. Se presenta el caso de una paciente femenina de 32 años de edad, con antecedentes de oligodoncia de ambos incisivos laterales superiores y portadora de prótesis parcial acrílica. Fue atendida por el equipo multidisciplinario de implantes en la Clínica Estomatológica Docente “3 de Octubre” y se le realizó tratamiento de rehabilitación integral con implantes Leader-Nano y prótesis fija con corona acrílica sobre dichos implantes. La implantología fue satisfactoria en la paciente; la mejoría estética y funcional, así como la satisfacción de la paciente, fueron los principales logros obtenidos

La cerámica en Cantabria desde su aparición (5000 cal BC hasta el final de la Prehistoria: técnicas de manufactura y características morfo-decorativas

Directory of Open Access Journals (Sweden)

CUBAS, M., BOLADO DEL CASTILLO, R., PEREDA ROSALES, E.M. y FERNÁNDEZ VEGA, P.A.

2013-01-01

En este artículo se presenta una visión diacrónica de la cerámica en la actual provincia de Cantabria desde su aparición (V milenio cal BC hasta el momento en el que finaliza lo que tradicionalmente se ha considerado como Prehistoria (siglo I cal BC. Se señalan las características tecnológicas, morfológicas y decorativas, resaltando aquellos rasgos comunes de los conjuntos cerámicos documentados durante este intervalo cronológico.

Experiencias de haber crecido con un padre/madre con trastorno mental severo (TMS)

OpenAIRE

Vivanco B, Gabriela; Grandón F, Pamela

2016-01-01

Introducción. La experiencia de vivir con personas que presentan un Trastorno Mental Severo (TMS) es difícil para las familias, en especial para los hijos quienes han sido poco estudiados. El objetivo de la investigación fue conocer cómo la experiencia de haber vivido con un padre o madre con un trastorno mental severo influyó en la infancia, adolescencia y adultez joven de sus hijos e hijas. Método. Se analizan las experiencias de convivencia con un padre/madre con TMS en 10 hijos (6 hombres...

Identification and synchronization of the common cosmic-ray signal in the IntCal13 14C calibration and the Greenland ice-core 10Be records

Science.gov (United States)

Muscheler, Raimund; Adolphi, Florian; Bronk Ramsey, Christopher; Rasmussen, Sune; Hughen, Konrad; Cooper, Alan; Turney, Chris

2017-04-01

The production rates of cosmogenic radionuclides (such as 10Be and 14C) are modulated by the solar and geomagnetic shielding of galactic cosmic rays. In addition, 14C and 10Be are influenced by the carbon cycle and the atmospheric transport and deposition, respectively. Isolating and identifying the common production signal allows us to synchronize ice core 10Be and tree ring 14C records during the Holocene (Adolphi and Muscheler, 2016), thereby connecting ice core climate records with 14C-dated records. Extending this comparison further back in time is challenging due to deteriorating quality of the 14C calibration record, IntCal13, (Reimer et al., 2013) and possible unidentified climate influences on the ice-core 10Be records. Nevertheless, by focusing on the most prominent production-rate features this comparison can be extended far back into the last glacial where, for example, the linkage of tree-ring based Kauri 14C data and the Greenland ice-core time scale (GICC05) suggested unresolved data and/or time scale differences around the period of the Laschamp geomagnetic field minimum at about 42000 yrs BP (Muscheler et al., 2014). Here we show that the data underlying the IntCal13 14C record and the ice-core 10Be records exhibit common variability that allows us to tentatively link the ice core GICC05 time scale to the radiocarbon time scale for almost the complete radiocarbon dating range. The observed time scale differences could be related to uncertainties in both the U/Th-based dating of the IntCal13 calibration data set and the GICC05 time scale, and we show that the two can be reconciled within the uncertainties of the ice-core layer counting. This direct comparison between IntCal13 and 10Be also suggests that the 14C differences shown in (Muscheler et al., 2014) around the Laschamp geomagnetic field minimum can be reduced by moderate adjustments to the GICC05 time scale. References: Adolphi, F., and Muscheler, R., 2016, Synchronizing the Greenland ice

Design of a New Switching Power Supply for the ATLAS TileCAL Front-End Electronics

CERN Document Server

Drake, G; The ATLAS collaboration

2012-01-01

We present the design of an upgraded switching power supply 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 improved reliability, while retaining the compact size, water-cooling, output control, and monitoring features in this 300 KHz design. We discuss the steps taken to improve the design. We present the results from extensive radiation testing to qualify the design, including SEU sensitivity. We also present our reliability analysis. Production of 2400 new bricks for the detector is currently in progress, and we present preliminary results from the production checkout.

Implementação de medidas ergonômicas em uma indústria calçadista: uma análise de suas influências sobre as condições de trabalho na atividade de desenformar calçados

OpenAIRE

Colaço, Geraldo Alves

2013-01-01

Este trabalho analisou a influência da implementação de medidas ergonômicas nas condições de trabalho do setor de montagem cimentado na atividade de desenformar calçado em uma indústria localizada no estado da Paraíba. Para tanto, realizou-se uma análise comparativa quanto às melhorias ergonômicas anteriormente implantadas nos postos de trabalho da empresa, segundo a metodologia Situação, Problema e Melhoria (SPM) (MÁSCULO; VIDAL, 2011), buscando constatar se a aplicação dessas medidas influe...

Modifications induced by adding natural zeolitic pozzolans to cement paste

Directory of Open Access Journals (Sweden)

Blanco-Varela, M. T.

2005-12-01

Full Text Available Volcanic pozzolans owe their pozzolanic activity chiefly to the presence of vitreous or zeolitic material rich in SiO₂, and Al₂0_y compounds that react with the portlandite produced during cement hydration to generate amorphous gels with cementitious properties. The present study analyzes the modifications taking place in the composition, structure and micro structure of the hydra ted cement paste when 20% of the cement by weight is replaced by two finely ground zeolitic rocks from Cuban deposits. Hydrated cement pastes were prepared with a CEM I35 cement, as well as with mixes of the cement and two Cuban zeolitic rocks (20% by weight. After eight months of hydration, the pastes were characterized -mineralogically, chemically and microstructurally- with XRD, FTIR, ²⁹Si and ²⁷Al MAS NMR, DTA/TG, back scattered electron microscopy and mercury porosimetry techniques. The replacement of 20% by weight of the cement with two finely ground zeolitic rocks significantly modified the composition, structure, quantity and microstructure of the hydrated cement paste reaction product. The C-S-H gel formed in these pastes differed in quantity, which was larger, and composition from the original cement gel. Moreover, the gel formed in addition-free cement had a higher Ca and a lower Al content and shorter silicate chains than the C-S-H product formed in the pastes made with zeolitic rocks. Finally, the pastes with pozzolan additions had fewer and smaller pores.

La actividad de las puzolanas de origen volcánico procede fundamentalmente de la presencia de material vitreo o zeolítico rico en SiO₂ y Al₂O_y que son los que reaccionan con la portlandita producida en la hidratación del cemento generando geles amorfos con propiedades cementantes. El objetivo del presente trabajo es estudiar las modificaciones que produce la sustitución del 20% en peso de cemento por dos

El Hidróxido de Calcio y los bloques de tierra comprimida, alternativa sostenible de construcción

Directory of Open Access Journals (Sweden)

Rubén Salvador Roux Gutiérrez

2012-01-01

Full Text Available En la actualidad, en nuestro país se hace mención a que existen una serie de problemas con los programas de vivienda, aún cuando se ha reducido el déficit de vivienda o que se han construido c ada año más viviendas en beneficio de las personas de bajos ingresos. Topelson (2011 el presente artículo describe un estudio sobre una alternativa sustentable de edificación y a la vez pretende demostrar las ventajas del uso del hidróxido de cal y los bl oques de tierra comprimida (BTC, para la edificación de vivienda y así poder reducir las emisones de CO 2 emitidas por los procesos constructivos convenci o nales El presente artículo trata dos materiales elementales en los procesos constructivos de las viv iendas, por un lado se realizá el estudio químico de los morteros cal – arena que se utilizán para el pegado de los mampuestos y los revoques, con la finalidad de determinar la absorción de CO 2 y por otra parte se hace el estudio mecánicos de un materia l alternativo para el uso de muros de carga como son los Bloques de Tierra Comprimida estabilizados con cal, por último se hace un comparativo entre estos materiales alternativos y los convencionales con relación a las emisones de CO2.

The safety of dipyridamole myocardial perfusion scintigraphy (MPS) in patients with end-stage chronic airways limitations (CAL)

International Nuclear Information System (INIS)

Roman, M.R.; Freeman, A.P.; Angelides, S.

2000-01-01

Full text: Dipyridamole MPS is a well-established investigative technique in the diagnosis and pre-operative risk stratification of patients with possible coronary artery disease. However, there remains a concern of its use in patients with end-stage chronic airways limitations (CAL). Lung volume reduction surgery (LVRS) is a recent therapeutic option for such patients. The options for non-invasive pre-operative cardiac assessment in such patients are limited. This study reviewed the safety of dipyridamole use in such a clinical setting. 20 patients (10M, 10F, mean age 64.8 yrs) were evaluated. None had any history of ischaemic heart disease. Dipyridamole was administered intravenously at a dose of 0.05 mg/kg. Six patients remained asymptomatic throughout the procedure, while none experienced any chest pain. Two patients experienced moderate dyspnoea, which was rapidly relieved with aminophylline (100mg IV) during the recovery phase of the study. Two others developed mild dyspnoea; one settled spontaneously, while the other responded promptly to aminophylline. Aminophylline was administered to nine other patients to reverse minor symptoms (headache, flushing sensation). One other patient developed marked hypotension (SBP fell >20mmHg) and bradycardia, but no ECG changes for myocardial ischaemia. He responded well to aminophylline. His myocardial perfusion scan demonstrated extensive reversible myocardial ischaemia. Although the population size was small, dipyridamole appears safe to use in patients with end-stage CAL. Copyright (2000) The Australian and New Zealand Society of Nuclear Medicine Inc

Avaliação da eficiência de cal virgem na inativação de ovos de nematoides - Strongyloides sp. parasitos de pacas - Cuniculus paca criadas em cativeiro

Directory of Open Access Journals (Sweden)

V.M.F. Ribeiro

Full Text Available RESUMO Criadores de animais silvestres sempre buscam métodos eficientes de manter sua criação. Parasitos intestinais afetam os animais em cativeiro, diminuindo sua sobrevivência e reprodução. Este estudo teve como objetivo avaliar a eficácia do uso de cal virgem na desinfecção do solo e na prevenção da reinfestação de endoparasitos em pacas (Cuniculus paca em cativeiro. Amostras de solo das baias de criação foram analisadas usando-se o método de Rugai modificado. Duas etapas foram avaliadas: a primeira aos cinco, 45 e 105 minutos após os tratamentos, e a segunda aos sete dias e aos 14 dias após os tratamentos. Os valores de pH das amostras foram verificados após a aplicação de quatro tratamentos. Foram aplicados 400g/m2 de cal virgem a lanço ou 500mL/m2 de três soluções de cal virgem (10%, 20% ou 40% p/v. Na primeira etapa, a cal a lanço foi ineficaz na modificação do pH do solo e no controle de parasitos. A solução a 10% proporcionou o melhor controle dos parasitos. Na segunda etapa, as soluções foram eficazes na elevação do pH, porém não houve diferença significativa nos achados larvais. Concluiu-se que, nas condições do estudo, a solução a 10% aumentou o pH do solo e teve boa capacidade de inativação dos ovos de Strongyloides sp., o que economicamente é interessante. Porém, para o controle eficiente de Strongyloides sp. em cativeiros de pacas, deve-se considerar a frequência da aplicação de soluções com até 20% de cal, juntamente com a adoção de um programa de vermifugação.

Robustness studies of the photomultipliers reading out TileCal, the central hadron calorimeter of the ATLAS experiment

CERN Document Server

Di Gregorio, Giulia; The ATLAS collaboration

2018-01-01

TileCal, the hadron calorimeter of the ATLAS experiment in LHC, is a 10000 channel detector readout by photomultipliers (PMTs). A challenging goal is to understand whether the full sample of PMTs installed at the beginning of the ATLAS detector operation can be used until completion of the High-Luminosity Large Hadron Collider (HL-LHC) program or not. For this reason, a reliable study of the PMT robustness against ageing is required. Detailed studies modelling the PMT response variation as a function of the integrated anode charge were done.

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...

Aspectos Psicosociales Relacionados con el TEPT en Pacientes con Cáncer de Mama

OpenAIRE

Hernández Moreno, Fresia Paloma; Landero Hernández, René

2015-01-01

El objetivo del estudio fue analizar la relación del estrés, la depresión y las estrategias de afrontamiento con el Trastorno de Estrés Postraumático (TEPT) en una muestra de pacientes con cáncer de mama. Se realizó con una muestra no probabilística de 52 mujeres con cáncer de mama. Se encontró una relación entre TEPT y estrés (r= .344, p= .014), TEPT y depresión (rs=.346, p= .013). El TEPT correlacionó con evitación cognitiva (r= .437, p= .001), TEPT y desesperanza (rs= .437, p= .001) y TEPT...

Droplet activation properties of organic aerosols observed at an urban site during CalNex-LA

Energy Technology Data Exchange (ETDEWEB)

Mei, Fan [Brookhaven National Laboratory, Upton New York USA; Pacific Northwest National Laboratory, Richland Washington USA; Hayes, Patrick L. [Cooperative Institute for Research in Environmental Sciences, Boulder Colorado USA; Department of Chemistry and Biochemistry, University of Colorado, Boulder Colorado USA; Ortega, Amber [Cooperative Institute for Research in Environmental Sciences, Boulder Colorado USA; Department of Chemistry and Biochemistry, University of Colorado, Boulder Colorado USA; Taylor, Jonathan W. [School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Manchester UK; Allan, James D. [School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Manchester UK; National Centre for Atmospheric Science, University of Manchester, Manchester UK; Gilman, Jessica [NOAA Earth System Research Laboratory, Boulder Colorado USA; Kuster, William [NOAA Earth System Research Laboratory, Boulder Colorado USA; de Gouw, Joost [NOAA Earth System Research Laboratory, Boulder Colorado USA; Jimenez, Jose L. [Cooperative Institute for Research in Environmental Sciences, Boulder Colorado USA; Department of Chemistry and Biochemistry, University of Colorado, Boulder Colorado USA; Wang, Jian [Brookhaven National Laboratory, Upton New York USA

2013-04-11

Size-resolved cloud condensation nuclei (CCN) spectra and aerosol chemical composition were characterized at an urban supersite in Pasadena, California, from 15 May to 4 June 2010, during the CalNex campaign. The derived hygroscopicity (κ_CCN) of CCN-active particles with diameter between 97 and 165 nm ranged from 0.05 to 0.4. Diurnal variation showed a slight decrease of κ_CCN from 8:00 to 16:00 (from 0.24 to 0.20), which is attributed to increasing organics volume fraction resulted from secondary organic aerosol (SOA) formation. The derived hygroscopicity distribution and maximum activated fraction of the size selected particles were examined as functions of photochemical age. The result indicates that condensation of secondary species (e.g., SOA and sulfate) quickly converted hydrophobic particles to hydrophilic ones, and during daytime, nearly every particle became a CCN at ~0.4% in just a few hours. Based on κ_CCN and aerosol chemical composition, the organic hygroscopicity (κ_org) was derived, and ranged from 0.05 to 0.23 with an average value of 0.13, consistent with the results from earlier studies. The derived κ_org generally increased with the organic oxidation level, and most of the variation in κ_org could be explained by the variation of the organic O : C atomic ratio alone. The least squares fit of the data yielded κorg = (0.83 ± 0.06) × (O:C) + (-0.19 ± 0.02). Compared to previous results based on CCN measurements of laboratory generated aerosols, κ_org derived from measurements during the CalNex campaign exhibited stronger increase with O : C atomic ratio and therefore substantially higher values for organics with average O : C greater than 0.5.

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...... (from 200 to 3500m depth over a distance of 10km) are reflected on the determined altimeter parameters using different reference surfaces for satellite calibration. Finally, it describes the relation between these parameter trends and the region’s local characteristics.Using 3.5years of Jason-2...... to be related to the general oceanographic circulation, but others of short wavelength (in the order of 1km) are because of the insufficient geoid model resolution. Along Pass No. 109, the concealed effect of bathymetry on the geoid has produced a slope of 3.1cm over 14–21km from Gavdos. Along the other Pass No...

Coatings of black carbon in Tijuana, Mexico, during the CalMex Campaign

Science.gov (United States)

Takahama, S.; Russell, L. M.; Duran, R.; Subramanian, R.; Kok, G.

2010-12-01

Black carbon number and mass concentrations were measured by a single-particle soot photometer (SP2; by Droplet Measurement Technologies) in Tijuana, Mexico between May 15, 2010, and June 30, 2010, for the CalMex campaign. The measurement site, Parque Morelos, is a recreational area located in the Southeast region of Tijuana. The SP2 was equipped with 8-channels of signal detection that spans a wider range of sensitivity for incandescing and scattering measurements than traditional configurations. The campaign-average number concentration of incandescing particles was 280 #/cc, peaking during traffic activity in the mornings. Incandescing particles made up 50% of all particles (incandescing and purely scattering) detected by the SP2. The mode of the number size distribution estimated for black carbon, according to estimated mass-equivalent diameters, was approximately 100 nm or smaller. Temporal variations in estimated coating thicknesses for these black carbon particles are discussed together with co-located measurements of organic aerosol and inorganic salts.

Paciente con esquizofrenia tratado con ziprasidona + clozapina

Directory of Open Access Journals (Sweden)

Pol Yanguas E.

2013-05-01

Full Text Available P es un paciente diagnosticado de esquizofrenia, sigue en un piso tutelado un programa de rehabilitación, está medicado con clozapina 500 mg/día y ziprasidona 280 mg/ día. Padece hipercolesterolemia, tabaquismo y sus hábitos alimenticios no son buenos. La medicación que utiliza desde 2007 hasta ahora se refleja en la tabla 1. El último tratamiento se le introdujo el 7 de agosto de 2012, habiendo presentado un electro cardiograma (ECG normal, pero con ligera taquicardia ventricular y prolactinemia de 44,8 ng/ml (valores normales: 2-18 ng/ml.

Los materiales alternativos estabilizados y su impacto ambiental

OpenAIRE

Rubén Salvador Roux Gutierrez; Víctor Manuel García Izaguirre; José Adán Espuna Mujica

2014-01-01

El presente trabajo es resultado de investigaciones desarrolladas a partir de la experimentación de materiales alternativos para la edificación, en especial, relacionado con Bloques de Tierra Comprimida (BTC), que han sido estabilizados con hidróxido de cal y cemento, buscando cumplir con las Normas Mexicanas, en el apartado referente a materiales para uso en mampostería de las edificaciones y así corroborar que estos materiales cumplen con requisitos de calidad, al igual que los materiales c...

SWFSC/MMTD/CCE: Oregon, California, and Washington Line-transect Experiment (ORCAWALE) 1996, 2001, 2008 and CA Current Cetacean and Ecosystem Assessment Survey (CalCurCEAS) 2014

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The California Current Cetacean and Ecosystem Assessment Survey (CalCurCEAS) is a marine mammal assessment survey of the U.S. West Coast waters. Similar research in...

The beginning of metallurgy in the southern Levant: a late 6th millennium CalBC copper awl from Tel Tsaf, Israel.

Science.gov (United States)

Garfinkel, Yosef; Klimscha, Florian; Shalev, Sariel; Rosenberg, Danny

2014-01-01

The beginning of metallurgy in the ancient Near East attracts much attention. The southern Levant, with the rich assemblage of copper artifacts from the Nahal Mishmar cave and the unique gold rings of the Nahal Qanah cave, is regarded as a main center of early metallurgy during the second half of the 5th millennium CalBC. However, a recently discovered copper awl from a Middle Chalcolithic burial at Tel Tsaf, Jordan Valley, Israel, suggests that cast metal technology was introduced to the region as early as the late 6th millennium CalBC. This paper examines the chemical composition of this item and reviews its context. The results indicate that it was exported from a distant source, probably in the Caucasus, and that the location where it was found is indicative of the social status of the buried individual. This rare finding indicates that metallurgy was first diffused [corrected] to the southern Levant through exchange networks and only centuries later involved local productionThis copper awl, the earliest metal artifact found in the southern Levant, indicates that the elaborate Late Chalcolithic metallurgy developed from a more ancient tradition.

Riesgo familiar total en familias con mujeres diagnosticadas con neoplasia de mama

Directory of Open Access Journals (Sweden)

Nancy Cecilia Charrys-Bravo

2017-07-01

Full Text Available Objetivo: Determinar el riesgo familiar total de las familias con mujeres diagnosticadas con cáncer de mama, que asisten a un centro de salud oncológico en la ciudad de Barranquilla. Materiales y Métodos: El estudio fue de tipo descriptivo, transversal con abordaje cuantitativo. Se utilizó el instrumento Riesgo Familiar Total RFT 5-33. El universo estuvo conformado por familias con mujeres diagnosticadas con cáncer en mama. La muestra fue de 41 familias que integraron a 154 miembros; se abordó el estudio de manera censal, y no por medio de una muestra, porque el acceso a la información de la totalidad de las familia fue viable. Resultados: Los resultados mostraron que las familias, en su mayoría, son de tipo 2. El 68 % de las pacientes categorizan sus familias como amenazadas, el 5 % como familias de alto riesgo y un 27 % de las familias con un bajo riesgo. Conclusiones: Los hallazgos encontrados en esta investigación son importantes para las familias, lo cual permitirá establecer acciones y actividades que logren orientar e implementar procesos de atención específicos con el propósito de cuidar a las familias para que se mantengan sanos en un nivel de bajo riesgo; además, desarrollar controles y seguimiento a aquellas familias que se encuentran en un riesgo alto de amenazas, mediante acciones de promoción y prevención de la enfermedad de una manera amplia. Por lo anterior, se deben emprender programas más agresivos de prevención y promoción, especialmente con las familias que asisten en busca de apoyo médico para este padecimiento; de esta forma, se podrán diagnosticar los casos de forma temprana y proceder al respectivo tratamiento.

REDUCCIÓN DE ÓXIDOSDE NITROGENO CON CATALIZADORES ZEOLÍTICOS INTERCAMBIADOS CON COBALTO

Directory of Open Access Journals (Sweden)

Enrique Alexis García Moya

2012-10-01

Full Text Available Se presenta un estudio sobre la reducción catalítica selectiva (RCS de NOx con metano en presencia de oxígeno en exceso con varios catalizadores a base de las zeolitas mordenita, ferrierita y ZSM-5 intercambiadas con diferentes cargas de cobalto y con las correspondientes zeolitas en forma acida. Cuando la mezcla reactiva contenía mayormente NO2 en lugar de NO, los catalizadores ácidos mostraron las más altas velocidades de formación de N2 en condiciones secas. Las mayores actividades se obtuvieron con los catalizadores Co-mordenita, siguiendo en orden de actividad los catalizadores Co-Ferrierita y Co-ZSM-5. El catalizador Co-Mordenita más activo se ensayó con una mezcla reactiva donde predominó el NO en lugar del NO2 bajo condiciones secas e hidrotérmicas y en presencia de SO2. Con la adición de 8% de agua a la mezcla de reacción se observó desactivación reversible, especialmente a bajas temperaturas. La adición de 60 ppm de SO2 disminuyó la velocidad de reacción aproximadamente a la mitad debido posiblemente al envenenamiento de algunos sitios activos.

>INFLUENCIA DE LAS CARACTERÍSTICAS DEL RELLENO MINERAL EN LA RESISTENCIA DE UNA MEZCLA ASFÁLTICA INFLUÊNCIA DAS CARACTERÍSTICAS DO RECH EADO MINERAL NA RESISTÊNCIA DE UMA MISTURA DE ASFALTO INFLUENCE OF CHARACTERISTICS OF MINERAL FILLER IN THE RESISTANCE OF ASPHALT MIXTURE

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ÓSCAR JAVIER REYES

2009-07-01

Full Text Available El objetivo principal de esta investigación fue determinar el efecto en la resistencia a tracción indirecta de reemplazar el relleno mineral por cemento, cal y ceniza volante con diferentes porcentajes. El estudio se inició con la caracterización de los materiales (agregados, asfaltos, cal, cemento y ceniza volante, seguido de la determinaci ón del porcentaje óptimo de asfalto mediante el método Marshall. Se seleccionaron para el estudio la granulometría MD10 y el asfalto con penetración 60/70, así mismo se sustituyó el relleno mineral en porcentajes de 0, 25, 50, 75 y 100. Se encontró que existe un incremento en la resistencia del 58 % al reemplazar el 100 % de relleno mineral por cal, del 22 % al sustituir el 50 % de relleno por ceniza volante y el 5 % al reemplazar el 75 % por cemento. Con respecto a la deformación de las probetas, para todos los porcentajes de sustitución de cal y cemento, la mezcla soporta mayor deformación para la carga máxima, mientras para el reemplazo de ceniza volante, sólo al 100 % de reemplazo aumenta la deformación con la carga máxima.O objetivo principal desta pesquisa foi determinar o efeito na resistência à tração indireta de substituir o recheado mineral por cimento, cal e cinza volante a diferentes percentagens. O estudo se iniciou com a caracteriza ção dos materiais (áridos, asfaltos, cal, cimento e cinza volante, seguido da determinação da percentagem ótima de asfalto mediante o método Marshall. Selecionou-se para o estudo a granulometria MD10 e o asfalto com penetração 60/70, assim mesmo se substituiu o recheado mineral às percentagens de 0, 25, 50, 75 e 100. Encontrou-se que existe um aumento na resistência de 58 % ao substituir 100 % supérfluo mineral por cal, de 22 % ao substituir 50 % de recheado por cinza volante e 5 % ao substituir 75 % por cimento. Com relação à deformação das provetas, para todas as percentagens de substituição de cal e cimento, a mistura

Terapias alternativas con animales para niños con necesidades especiales

OpenAIRE

Cea-Chueca, Aihnoa

2014-01-01

El presente trabajo de fin de grado consiste en la realización de un análisis y descripción de la literatura acerca de las distintas terapias animales, destinadas a niños con necesidades especiales: cómo y por qué surgieron, en qué consisten las terapias, cómo podemos utilizarlas, etc. Las terapias alternativas con animales se conocen como una alternativa terapéutica, donde se utiliza a un animal como co-terapeuta para poder desarrollar diferentes capacidades de los niños con necesidades espe...

TRATAMENTO DE EFLUENTES ÁCIDOS RICOS EM METAIS COM AUXÍLIO DE SULFETO BIOGÊNICO E CAL

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Damaris Guimarães

2014-07-01

Full Text Available A proposta do presente trabalho foi estudar uma forma de tratamento alternativo para efluentes líquidos ácidos ricos em metais utilizando para isso um efluente sulfetogênico gerado em um reator anaeróbio (UASB e cal. Os ensaios foram realizados em batelada utilizando dois efluentes ácidos distintos: (i um efluente proveniente de ensaios de lixiviação e (ii um efluente ácido proveniente de um laboratório de pesquisas na área de Bio&Hidrometalurgia. O efluente dos ensaios de lixiviação apresentou pH inicial de 1,7 e elevadas concentrações dos metais: Al (545,5mg/L, Ca (668,1mg/L, Cu (37,6mg/L, Fe (1148,4mg/L, Mg (1105,9mg/L e Ni (82,3mg/L, enquanto que o efluente do laboratório era composto por Cu (4,8mg/L, Fe (342,2mg/L e Ni (3,1mg/L, sendo o pH inicial de 0,14. O tratamento consistiu em adicionar o efluente sulfetogênico aos efluentes ácidos, em diferentes proporções, sendo observadas remoções consideráveis dos metais, principalmente, Fe e Ni, e uma elevação no valor de pH. Em seguida, a fim de se obter melhores resultados de remoção para os metais, os efluentes foram tratados com cal, enquadrando-se aos padrões do CONAMA para o lançamento de efluentes.

Variables socionutricionales de hogares mazahuas integrados por preescolares desnutridos con madres con obesidad y sin obesidad

Directory of Open Access Journals (Sweden)

Conzuelo González, Viridiana Vanessa

2009-01-01

Full Text Available El primer objetivo fue conocer cuántos menores de cinco años con diferentes grados de desnutrición tienen una madre con sobrepeso/obesidad/ en una comunidad indígena que vive en extrema pobreza y bajo condiciones de migración masculina internacional. El segundo fue comparar tres variables socionutricionales (ingreso familiar, educación de la madre y adecuación nutrimental de la dieta diaria entre estos hogares y los hogares con desnutrición infantil y madres sin obesidad. Se realizó un estudio transversal (2006-2007, en la comunidad mazahua de San Francisco Tepeolulco, Municipio de Temascalcingo; que incluyó a 85 hogares integrados por preescolares con desnutrición inscritos al programa Oportunidades. Se determinó el estado nutrición de los preescolares con indicadores antropométricos y se obtuvo el IMC de las madres de estos infantes. Se aplicó una encuesta socionutricional, incluida el recordatorio de 24 horas, y complementado con la observación participante (cualitativa. Se encontró que 83% de las madres mazahuas presentaron sobrepeso u obesidad. El estado de nutrición de los preescolares con madres con obesidad presentó un porcentaje mayor de desnutrición (76%. En la variable género, se encontró que 54% de los niños con madres con obesidad tenía baja talla. Al relacionar el nivel educativo de la madre, esta variable resultó ser estadísticamente significativa (p=0.015, donde el analfabetismo está más relacionado con la desnutrición infantil que tienen madres de bajo y/o peso normal. La elevada prevalencia de hogares conformados con preescolares con desnutrición y madres con obesidad, es un síntoma más de la pobreza en zonas indígenas en México, con bajo índice de desarrollo humano.

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.

An Upgraded Front-End Switching Power Supply Design for the ATLAS TileCAL Detector of the LHC

CERN Document Server

Drake, G; The ATLAS collaboration; De Lurgio, P; Henriques, A; Minashvili, I; Nemecek, S; Price, L; Proudfoot, J; Stanek, R

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.

RUGs and "Medi-Cal" systems for classifying nursing home patients.

Science.gov (United States)

Grimaldi, P L

1985-12-01

Medicare and most state Medicaid programs currently use indirect case-mix measures to determine reimbursement for nursing home care. In the future, however, they probably will incorporate more direct case-mix measures into their payment systems. Care must be exercised in designing a case-based prospective payment system to ensure that its financial incentives motivate providers to expedite recovery, prevent deterioration, and admit heavy-care patients. For example, although use of a services-rendered approach helps guarantee that care will be provided when needed, it also offers providers an incentive to furnish a service regardless of whether it is in the patient's best interest. Consideration must be given to the frequency with which patients are reassessed. The implications of the timing of reassessments for quality of care also must be studied. Ideally, quality would be measured on an outcome basis--that is, payment would depend on whether targeted goals for individual patients are reached--rather than on structural or process measures alone. Two recent classification systems--Resource Utilization Groups and Medi-Cal groups--may serve as models for case-based prospective payment systems. Each method classifies patients into distinct, meaningful categories based on activities of daily living and services received.

Terapia regenerativa con plasma rico en plaquetas en pacientes con quemaduras

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María del Carmen Franco Mora

2015-10-01

Full Text Available Se realizó un estudio comparativo, longitudinal y prospectivo de 60 adultos con quemaduras profundas, atendidos en el Hospital General docente "Dr. Juan Bruno Zayas Alfonso" de Santiago de Cuba, desde febrero de 2013 hasta igual mes de 2014, para evaluar la efectividad de la terapia regenerativa con plasma rico en plaquetas para la cicatrización de estas lesiones. La muestra fue dividida en 2 grupos de 30 integrantes cada uno: a los del primero se les aplicó plasma rico en plaquetas y a los del segundo sulfadiazina de plata. Se utilizaron las frecuencias absolutas y el porcentaje como medidas de resumen para variables cualitativos, así como la media aritmética y la desviación estándar para las cuantitativas. Con el proceder aplicado la cicatrización se completó en un tiempo menor, de manera que se demostró la efectividad de esta alternativa terapéutica en relación con el tratamiento convencional

Terracotas del santuario de Calés (Calvi, Campania

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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.

RadConEd: A Graphical Data Editor for the Radiological Consequences Model, RadCon

International Nuclear Information System (INIS)

Crawford, J.; Domel, R.U.

2000-05-01

This document describes the application, RadConEd, which has been designed and implemented to enable users of the RadCon system to update these parameter files. The RadCon system is written in the Java programming language, and as such provides portability across computer platforms. The software described in this report was developed in line with the portability requirements of RadCon, thus providing a uniform user interface across computer platforms and bypassing the need of using system editors. In addition a number of data integrity measures were implemented

The rock-cut tombs of S’Alblegall (Ferreries and cereal based agriculture in the mid 2nd millennium cal BC in Minorca

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Arnau Fernández, Pedro

2003-12-01

Full Text Available In this paper we present the first work undertaken on the necropolis of S’Alblegall (Ferreries, Minorca. Hypogeum nº 3 of this necropolis has produced interesting traces for the study of cereal agriculture in the island of Minorca, in the middle of the XV cal ANE century. It allows us to propose a new hypothesis about the construction of hypogea in the island, as well as to review the different archaeological sites on the island that have signs of cereal cultivation.

En este artículo damos a conocer los primeros trabajos realizados en la necrópolis de S’Alblegall (Ferreries, Menorca. El hipogeo nº 3 de esta necrópolis ha proporcionado interesantes indicios para el estudio de la agricultura cerealística en la isla de Menorca en un momento que situamos hacia mediados del siglo XV cal ANE. Ello nos permite plantear nuevas hipótesis sobre la construcción de hipogeos en la isla, así como realizar un recorrido por los distintos yacimientos arqueológicos menorquines que han deparado evidencias del cultivo de cereales.

Soporte alimentario y nutricional en niños con fibrosis quística Nutritional support in children presenting with cystic fibrosis

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Aida Esplugas Montoya

2011-03-01

Full Text Available INTRODUCCIÓN. La fibrosis quística es una enfermedad que se manifiesta en las vías respiratorias, el páncreas y el tracto intestinal. El control nutricional es un aspecto decisivo en el tratamiento de la enfermedad. El objetivo del estudio fue caracterizar un grupo de pacientes que se encontraban en fases de soporte y rehabilitación nutricional. MÉTODOS. Se realizó un estudio prospectivo con 7 pacientes menores de 18 años, que ingresaron para su tratamiento en la unidad especializada en fibrosis quística del Hospital Pediátrico Universitario «William Soler» (La Habana. Se realizaron mediciones antropométricas al ingreso y al egreso, y se clasificó a los niños en desnutrido, de bajo peso y de peso normal. Los valores fueron comparados con las tablas de crecimiento y desarrollo de la población cubana. RESULTADOS. A 3 pacientes se les aplicó una intervención de soporte nutricional y 4 pacientes fueron tratados además con nutrición enteral suplementaria. En la evaluación nutricional se encontró que la distribución porcentual calórica que aportaron los alimentos fue de un 12 % para las proteínas, 37 % para las grasas y 51 % para los carbohidratos. La energía que aportaron los alimentos consumidos ascendió a 4 360 kcal, 134,27 g de proteínas, 177,51 g de grasas y 558,20 g de carbohidratos. CONCLUSIONES. Al aumentar la densidad calórica de los alimentos y aplicar nutrición enteral a los pacientes se obtuvo un incremento de la ganancia ponderal y mejoró el estado nutricional.INTRODUCTION. Cystic fibrosis is a disease of airways, pancreas and intestinal tract. The nutritional control is a decisive feature in treatment of disease. The objective of present paper was to characterize a group of patients in nutritional support and rehabilitation phases. METHODS. A prospective study was conducted in 7 patients aged under 18 admitted for treatment in the cystic fibrosis specialized unit or the "William Soler" University Children

Assessing change in diet and biological affinity between the 4th and 3rd millennia cal BCE in the Portuguese Estremadura: a preliminary dental comparison of Feteira II and Bolores.

Science.gov (United States)

Horwath, B C; Waterman, A J; Lillios, K T; Irish, J D

2014-04-01

Although the social and political changes accompanying the transition from the Neolithic through Copper Age, between the 4th and 3rd millennia cal BCE, in southwestern Iberia are reasonably well understood, much less is known about whether population movements and dietary changes accompanied these transformations. To address this question, human dental remains from the Middle through Late Neolithic site of Feteira II (3600-2900 cal BCE) and the Late Neolithic site of Bolores (2800-2600 cal BCE) in the Portuguese Estremadura were used to examine diet (microwear) and affinity (dental non-metrics). Microwear features were not found to be significantly different between Feteira II and Bolores, suggesting that the emergence of social complexity during this period did not result in large-scale changes in subsistence practices during the period of use at these sites. Using the Arizona State University Dental Anthropology System and supporting statistics, no significant difference between the samples from Feteira II and Bolores was observed, suggesting that no population replacement occurred between the Middle Neolithic and Late Neolithic/Copper Age. However, at Bolores there is some indication that there may have been demographic exchanges between southern Iberian and North African populations during the Late Neolithic/Copper Age. Copyright © 2013 Elsevier GmbH. All rights reserved.

Calidad de vida, satisfacción con el tratamiento y bienestar emocional en pacientes con diabetes LADA

OpenAIRE

Granado Casas, Minerva

2014-01-01

Introducción: La calidad de vida, satisfacción con el tratamiento y bienestar emocional en pacientes con diabetes mellitus están relacionados con el control metabólico, las complicaciones y algunas variables socioeconómicas. Actualmente, no existe ningún estudio científico que analice la calidad de vida, satisfacción con el tratamiento y bienestar emocional en pacientes con diabetes LADA. Objetivos: Los objetivos principales fueron conocer la calidad de vida, satisfacción con el tratamient...

Do nistagmo às provas calóricas com ar e com água From nystagmus to the air and water caloric tests

Directory of Open Access Journals (Sweden)

Anna Carolina Marques Perrella de Barros

2012-08-01

Full Text Available A prova calórica é uma importante ferramenta na avaliação da função labiríntica. OBJETIVO: Comparar o nistagmo pós-calórico da prova com ar a 50ºC e 24ºC com o da prova com água a 44ºC e 30ºC. Desenho científico: Estudo clínico cruzado randomizado. MATERIAL E MÉTODO: 40 indivíduos hígidos submetidos à avaliação da função vestibular incluindo a prova calórica com ar a 50ºC e 24ºC e com água a 44ºC e 30ºC. RESULTADOS: À comparação das provas com ar e com água, não houve diferença significante entre os valores da velocidade angular da componente lenta (VACL do nistagmo pós-calórico quanto à ordem de realização das estimulações, entre as orelhas e entre os valores de predomínio labiríntico e de preponderância direcional. Os valores da VACL foram maiores nas estimulações com água (p = 0,008; p The caloric test is an important tool for the assessment of labyrinthine function. OBJECTIVE: To compare the nystagmus response in the caloric tests with air at 50ºC and 24ºC and with water at 44ºC and 30ºC. Study Design: Randomized crossover clinical trial. MATERIALS AND METHODS: 40 healthy individuals were submitted to a neurotological evaluation, including caloric tests with air at 50ºC and 24ºC and water at 44ºC and 30ºC. RESULTS: Comparing the air and water caloric tests, there were no significant differences among the post-caloric nystagmus slow-phase velocity in relation to the stimulation order, between ears and between the values of unilateral weakness and directional preponderance. The slow-phase velocity values were higher with water (p = 0.008, p < 0.001, and cold stimulation produced stronger responses (p < 0.001. CONCLUSION: Comparing 50ºC and 24ºC air caloric test and 44ºC and 30ºC water caloric test, we observed similar slow-phase velocity values for both ears, higher responses in the cold temperature and in the test with water, and similar results of unilateral weakness or directional

A gravidade da cárie está associada à desnutrição proteico-calórica em pré-escolares?

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Cecilia Claudia Costa Ribeiro

2014-03-01

Full Text Available Avaliou-se se gravidade da cárie está associada à desnutrição proteico-calórica em pré-escolares. Foi realizado um estudo seccional aninhado a uma coorte retrospectiva de 625 crianças entre 24 -71 meses, em São Luís, Maranhão. Um modelo hierarquizado foi avaliado em cinco níveis: 1º Variáveis socioeconômicas (classe econômica, escolaridade materna, cor da pele; 2º Variáveis de acesso; 3º Baixo peso ao nascer e amamentação exclusiva; 4º Peso para altura aos 12 meses e 5º Gravidade da cárie e níveis de albumina (Alb. O desfecho foi desnutrição proteico-calórica (z escore altura para idade < -2. A prevalência do desfecho foi de 5,0 %, e da cárie foi de 32%. As variáveis do primeiro nível não foram associadas ao desfecho, porém a classe econômica foi mantida até o modelo final. As variáveis do segundo e do terceiro níveis não foram significativas. No quarto nível, peso para altura aos 12 meses não foi significativo, porém foi mantido até o modelo final. No último nível, os níveis de Alb não foram associados ao desfecho e a gravidade da doença cárie foi positivamente associada com desnutrição proteico-calórica em pré-escolares. A associação da gravidade da cárie com déficit antropométrico sinaliza que a saúde bucal deva ser parte importante nas políticas públicas de atenção à infância.

Reliable and redundat FPGAbased read-out design in the ATLAS TileCal Demonstrator

CERN Document Server

Akerstedt, H; The ATLAS collaboration

2014-01-01

The TileCal Demonstrator is a prototype for a future upgrade to the ATLAS hadron calorimeter when the Large Hadron Collider increases its 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 stays backwards compatible with the present detector system by providing analog trigger signals. The Demonstrator is comprised of 4 identical “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 the 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 detector operatio...

Mass concentration, composition and sources of fine and coarse particulate matter in Tijuana, Mexico, during Cal-Mex campaign

Science.gov (United States)

Minguillón, María Cruz; Campos, Arturo Alberto; Cárdenas, Beatriz; Blanco, Salvador; Molina, Luisa T.; Querol, Xavier

2014-05-01

This work was carried out in the framework of the Cal-Mex project, which focuses on investigating the atmosphere along Mexico-California border region. Sampling was carried out at two sites located in Tijuana urban area: Parque Morelos and Metales y Derivados. PM2.5 and PM10 24 h samples were collected every three days from 17th May 2010 to 27th June 2010, and were used for gravimetric and chemical analyses (major and minor elements, inorganic ions, organic and elemental carbon) of PM. A subsequent Positive Matrix Factorization (PMF) analysis was performed. PM2.5 and PM10 average concentrations during Cal-Mex were relatively lower compared to usual annual averages. Trace elements concentrations recorded in the present study were lower than those recorded in Mexico City in 2006, with the exception of Pb at Metales y Derivados, attributed to the influence of a specific industrial source, which also includes As, Cd and Tl. Apart from this industrial source, both urban sites were found to be affected by similar sources with respect to bulk PM. Fine PM (PM2.5) was mainly apportioned by fueloil and biomass combustion and secondary aerosols, and road traffic. Coarse PM (PM2.5-10) was mainly apportioned by a mineral source (sum of road dust resuspension, construction emissions and natural soil) and fresh and aged sea salt. The road traffic was responsible for more than 60% of the fine elemental carbon and almost 40% of the fine organic matter.

Mastopexia con prótesis: técnica triplanar con colgajo en cola de pez para mamas con pobre calidad de cobertura

Directory of Open Access Journals (Sweden)

M. Berrocal-Revueltas

2013-12-01

Full Text Available La mastopexia con implantes de silicona, es uno de los procedimientos más frecuentes en la práctica diaria en Cirugía Plástica. Sin embargo, la pobre calidad de la cobertura de las mamas, relacionada con piel estriada, escaso tejido subcutáneo y pérdida del parénquima mamario secundarios a la lactancia prolongada y a la pérdida masiva de peso, son causa del incremento progresivo de resultados insatisfactorios a medio y largo plazo que han sido evaluados, analizados y discutidos por los especialistas. Los resultados insatisfactorios más frecuentes en mastopexia con implantes en posición retromuscular son: doble contorno mamario, asimetrías y desplazamiento de los implantes. Los objetivos del presente estudio son: describir el nuevo método triplanar como alternativa útil para lograr mejores resultados en pacientes con mala calidad de cobertura y analizar los resultados obtenidos con el mismo. Realizamos un estudio observacional, descriptivo, prospectivo, en un grupo de 268 pacientes con diagnóstico de ptosis mamaria con hipotrofia y mala calidad de cobertura por piel estriada, escaso tejido celular subcutáneo y pérdida del parénquima mamario, secundarios a lactancia prolongada y pérdida masiva de peso, entre otros, a las que se les practicó mamoplastia de aumento con implantes de silicona mediante la aplicación del método triplanar descrito por la autora, entre enero del 2004 y enero del 2013 en el Hospital de Bocagrande de Cartagena, Colombia. El diseño de la técnica se basa en los principios de cicatriz vertical descrita por Lassus o Lejour o mediante cicatriz en "J", descrita por la autora. El método triplanar se basa en tres planos de cobertura del implante. Plano I: submuscular, para cubrir los dos tercios superiores del implante. Plano II: colgajo dermoglandular con dos prolongaciones distales triangulares de tejido adiposo, en forma de pez, para cubrir el tercio inferior del implante y el borde libre del m

Estudio comparativo del efecto del cepillado con una crema dental con propóleos rojos y de un gel con clorofila

OpenAIRE

Estela Gispert Abreu; Elena Cantillo Estrada; Aracelys Rivero López; Berta Oramas Rodríguez

1998-01-01

Se analiza comparativamente el efecto de un gel dental de clorofila y de una crema dental con propóleos rojos sobre varios parámetros relacionados con la caries dental, en escolares que se cepillaron durante 21 días con dichos productos. Se obtuvieron resultados favorables principalmente en la disminución del grado de infección por Streptococcus mutans y la elevación de la capacidad individual de remineralización; salvo en este último no hubo diferencias estadísticamente significativas.Author...

The Monastery of Uclés (Cuenca, Spain: characterization and deterioration of building materials

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Álvarez De Buergo, M.

2004-09-01

Full Text Available Building materials from the Monastery of Uclés façades, in Cuenca (16th-18 th centuries, have been characterised, as well as identified their deterioration forms. Characterization consisted of the determination o mineralogical and petrographical properties of building materials; petrophysical and petrochemical characterization of building stones were also carried out. Stony materials are basically of two types, dolostones and limestones. Ashlars joint mortars are of three classes, chronologically from the oldest to the newest: lime mortars with siliceous and dolomitic aggregates, gypsum/lime mortars with dolomitic aggregates, and gypsum/lime mortars with siliceous aggregates. The façades have been protected with artificial patinas of three kinds: lime, lime/gypsum and gypsum patinas, chronologically from the oldest to the newest, with a variable thickness from 500 µm. The dolomitic fades are better conserved than the calcareous ones, and the covering artificial patinas presence have preserved the materials on which they were applied.

Se han caracterizado ¡os materiales de construcción de las fachadas del Monasterio de Uclés en Cuenca (s. XVI-XVIII así como sus formas de deterioro. La caracterización consistió en la determinación de sus características mineralógicas, petrográficas y petroquímicas, asi como la caracterización petrofisica de los materiales pétreos. Las piedras de construcción son, fundamentalmente, de dos tipos, dolomías y calizas. Los morteros de rejuntado de los sillares son de tres tipos, en orden cronológico, de más antiguos a más modernos: morteros de cal con áridos silíceos y dolomíticos, morteros de cal/yeso con áridos dolomílicos, y morteros de yeso/cal con áridos silíceos. Las fachadas han estado protegidas por pátinas artificiales de tres tipos: de cal, de cal/yeso y de yeso; en orden cronológico, de más antiguas a más modernas, con espesores variables desde < 100µm

Correlación entre los azúcares declarados en los rótulos de bebidas analcohólicas y los determinados experimentalmente

OpenAIRE

Olmedo, Luciana; Henning, María Florencia; García, Silvia; Papalardo, Brenda; Malpeli, Agustina; Bisceglia, María Gabriela; Pellón Maisón, Magalí

2017-01-01

La obesidad es una enfermedad multifactorial con un importante componente genético, pero en la mayoría de los casos se produce como consecuencia de un desbalance energético entre calorías consumidas y calorías gastadas. El consumo excesivo de bebidas azucaradas contribuye de manera significativa al aumento del consumo calórico y por lo tanto, al desarrollo de la obesidad. Existe controversia sobre el impacto negativo diferencial que ejercen cada uno de los edulcorantes calóricos utilizados en...

PRESENCE OF SCOLIOTIC BAD POSTU RE AND DIFFERENCES IN MORPHOLOGICAL CHARACTERISTICS OF VOLLEYBAL AND HANDBALL FEMALE PLAYERS

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Saša Milenković

2007-05-01

Full Text Available The aim of this research is to define the scope of influences of program mes of volleyball and handball schooll on the ap pe a ran ce of sco li o tic bad po stu re in ac ti ve volleyball and hand ball fe ma le players. In or der to un der stand the pro blem in its unity we ha ve to po int out that in fl u en ce of sport and physi cal edu ca tion on su bjects ta king pla ce in it is not al ways by ru le po si ti ve one. In ca ses of un skil lful and un ca re full tra i ning process such physi cal aci ti vi ti es can harm physi o lo gi cal fun cti ons, body com po si tion and de ve lop ment of the who le ar ray of bi o mo to ric struc tu res. Al so it is ne ces sary to ma ke a dif fe ren ce bet we en bad po stu re and de for mi ti es of the spi ne. Bad po stu re is not a constant form of end gan ge red part of the body and it can be cor rec ted by ta king adap ted cor rec ted po stu re and sreng hte ning of the mu scles and de com pres sing of that part of the body. The se very sta tes pre sent a su bject of our re se arch and we call them po stu ral –fun cti o nal ones. Vol leyball and hand ball are sports which by the ir mo tor con tents act asi me tric on lo co mo tor ap pa ra tus of the at hle tes. Mo ve ments are con di ti o ned by tec hni cal, tac ti cal and physi cal abi li ti es of the op po nents. Ta king in to con si de ra tion asi me tric tre a ting of spe ci fi c mu scle re gi ons they can bring abo ut spe ci fi c body de for mi ti es known as po stu ral de for mi ti es.

Using Emotions in Intelligent Virtual Environments: The EJaCalIVE Framework

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Jaime A. Rincon

2017-01-01

Full Text Available Nowadays, there is a need to provide new applications which allow the definition and implementation of safe environments that attends to the user needs and increases their wellbeing. In this sense, this paper introduces the EJaCalIVE framework which allows the creation of emotional virtual environments that incorporate agents, eHealth related devices, human actors, and emotions projecting them virtually and managing the interaction between all the elements. In this way, the proposed framework allows the design and programming of intelligent virtual environments, as well as the simulation and detection of human emotions which can be used for the improvement of the decision-making processes of the developed entities. The paper also shows a case study that enforces the need of this framework in common environments like nursing homes or assisted living facilities. Concretely, the case study proposes the simulation of a residence for the elderly. The main goal is to have an emotion-based simulation to train an assistance robot avoiding the complexity involved in working with the real elders. The main advantage of the proposed framework is to provide a safe environment, that is, an environment where users are able to interact safely with the system.

Investigando con personas con dificultades de aprendizaje

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Borja González Luna

2013-12-01

Full Text Available El artículo muestra los orígenes de lo que Walmsley (2008 denomina «investigación inclusiva». Para comprender qué se entiende por investigación inclusiva tenemos que remontarnos a los debates epistemológicos sobre las metodologías cuantitativas y cualitativas, acontecidos en la década de los 90, en torno a la revista Disability & Society. A partir de una síntesis de dichos debates, focalizados en el ámbito de la «discapacidad intelectual y del desarrollo», se exponen dos estrategias de colaboración con dicha población: a una aproximación etnográfica (de trabajo grupal, y b una aproximación biográfica (de trabajo individual. A continuación se esboza un posible diseño de trabajo de campo que intenta superar el paradigma cualitativo «clásico» con el objetivo de incluir a dicho colectivo más allá del rol de «sujetos de la investigación». Para finalizar se recoge el debate sobre la accesibilidad de los resultados de la investigación a los participantes en dichas investigaciones, y con ello la necesaria innovación en el ámbito de las «devoluciones» de los resultados, cuando se trata de incluir a personas que presentan limitaciones para la comprensión del lenguaje abstracto oral y/o escrito.

MODELADO CON REDES DE PETRI E IMPLEMENTACIÓN CON GRAFCET DE UN SISTEMA DE MANUFACTURA FLEXIBLE CON PROCESOS CONCURRENTES Y RECURSOS COMPARTIDOS

OpenAIRE

Johanna Stella Castellanos Arias; Leonardo Enrique Solaque Guzmán

2010-01-01

En este trabajo, se presenta el modelado de un Sistema de Manufactura Flexible (SMF), con procesos concurrentes y recursos compartidos mediante Sistemas a Eventos Discretos (SED), específicamente Redes de Petri (RdP), y GRAFCET. El SMF se plantea como un modelo hipotético que se modela con una RdP con el objeto de identificar su dinámica y hallar la secuencia óptima de funcionamiento del sistema. Se desarrolló un modelo matemático que permite estimar el vector de tiempo acumulado de un proces...

Estabilidade aeróbia, pH e dinâmica de desenvolvimento de microrganismos da cana-de-açúcar in natura hidrolisada com cal virgem Aerobic stability, pH and development dynamic of microorganisms on fresh sugarcane hydrolyzed with whitewash

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F.N. Domingues

2011-04-01

Full Text Available Objetivou-se com este trabalho avaliar o efeito da adição de cal virgem e dos tempos após a aplicação sobre a estabilidade aeróbia e o crescimento de microrganismos (leveduras e fungos na cana-de-açúcar in natura. O delineamento experimental utilizado foi o inteiramente casualizado, com quatro repetições. Avaliaram-se a estabilidade aeróbia (temperatura, a dinâmica de desenvolvimento de leveduras e fungos e o pH, em um esquema de parcelas subdivididas, com cinco doses de cal (0; 0,5; 1,0; 1,5 e 2,0% e cinco tempos após aplicação (0, 24, 48, 72, 96 horas. Houve efeito significativo das doses de cal para todos os parâmetros avaliados. A cana que não foi tratada com cal (0% apresentou quebra da estabilidade no menor intervalo de tempo. Os valores de pH aumentaram gradativamente de acordo com a dose de cal aplicada e diminuíram com o tempo após aplicação. Houve aumento numérico na contagem de leveduras até as 72 horas após a aplicação da cal, independentemente da dose, e os valores tenderam a estabilizar no tempo de 96 horas pós-tratamento. Não houve efeito significativo das doses de cal sobre o desenvolvimento dos fungos. A aplicação de cal virgem é eficaz no controle do crescimento de leveduras e aumenta a estabilidade aeróbia da cana-de-açúcar in natura.The objective of this work was to evaluate the effect of whitewash addition and the times after application on aerobic stability and growth of microorganisms (fungi and yeasts in fresh sugarcane. It was used a completely randomized experimental design, with four replications. Aerobic stability (temperature and the concentrations of yeast and fungus and pH were evaluated in a split-splot scheme with five doses of whitewash (0; 0.5; 1.0; 1.5 and 2.0% and five times after treatment (0, 24, 48, 72 and 96 hours. There was a significant effect of doses of whitewash for all evaluated parameters. The sugarcane which was not treated with whitewash (0.0% showed a break in

Earth's crust and heat flow in the Fossa Brandanica, Southern Italy. [0. 4 to 2. 2. mu. cal/cm/sup 2//sec

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Mongelli, F; Ricchetti, G

1970-01-01

A detailed study has been made of the Fossa Bradanica by means of seven shallow boreholes drilled in the clays. The observed gradients together with the results of in-situ thermal conductivity measurements indicate the heat flow as being between 0.4 and 2.2 ..mu..cal/cm/sup 2/ . sec. The influence of geographic and geological factors is discussed. The results obtained are not incompatible with crustal structures indicated by other geophysical methods.

con mala calidad de vida

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Agustín Martín-Rodríguez

2007-01-01

Full Text Available En este estudio ex post facto se ha analizado si los familiares de pacientes con mala calidad de vida presentan diferencias en las variables clínicas de personalidad y relaciones familiares en función de que el paciente haya estado o no ingresado en una Unidad de Cuidados Intensivos. Seleccionamos dos grupos: 29 familiares de pacientes traumatizados graves transcurridos cuatro años de su ingreso en una UCI de Traumatología y con mala calidad de vida (debido a secuelas físicas y/o psicológicas tras el ingreso, tales como traumatismos craneoencefálicos, politraumatismos y tetraplejias traumáticas y 32 familiares de pacientes con mala calidad de vida con cuatro años de evolución de su enfermedad física (hipertensión, diabetes, artritis reumatoide y síndrome de intestino irritable que no han estado ingresados en la UCI. Para alcanzar nuestro objetivo empleamos una Encuesta Psicosocial y los siguientes instrumentos: Cuestionario de Análisis Clínico, Escala de Clima Social en la Familia y Escala de Adaptación Psicosocial de la Enfermedad. Los resultados mostraron que los familiares de pacientes con mala calidad de vida que estuvieron ingresados en la UCI hace cuatro años, presentan diferencias significativas en las variables agitación y expresividad comparados con los familiares de pacientes con mala calidad de vida que no han estado ingresados en la UCI.

Actividad hidráulica de un cemento belítico obtenido a partir de cenizas volantes tipo C: influencia del aditivo y tipo de curado

OpenAIRE

Goñi Elizalde, Sara; Guerrero Bustos, Ana María

2006-01-01

En este trabajo se discute la influencia del tipo de curado y de un aditivo reductor de la demanda de agua en la actividad hidráulica de un cemento belítico de cenizas volantes de alto contenido en cal denominado (CBCV-2-A). Este cemento ha sido sintetizado por una ruta húmeda hidrotermal con posterior calcinación, empleando ceniza volante de alto contenido en cal (ASTM tipo C) como materia prima. La actividad hidráulica se ha estudiado en la pasta de cemento, durante un periodo de 180 ...

Estudio exploratorio de la oferta de bebidas sin alcohol en comercios mayoristas y minoristas de ciudad de La Plata

OpenAIRE

Papalardo, Brenda; García, Silvia; Prestes, Mariana; Fasano, María Victoria; Olmedo, Luciana; Henning, María Florencia; Malpeli, Agustina; Bisceglia, María Gabriela; Pellón Maisón, Magalí

2017-01-01

Los hábitos de consumo alimentario actuales promueven el sobrepeso y la obesidad. Se consiguen alimentos a menores precios, particularmente aquellos con una alta densidad energética y con mayor grado de procesamiento, como las bebidas endulzadas con edulcorantes calóricos. La Argentina se posiciona como uno de los líderes del mercado y como uno de los mayores consumidores a nivel mundial de este tipo de bebidas. Los objetivos de este trabajo fueron: -Explorar el contenido total de hidra...

Afectación ocular severa bilateral por déficit de vitamina A

OpenAIRE

Ruiz-Martín, MM; Boto-de-los-Bueis, A; Romero-Martín, R

2005-01-01

Caso clínico: Se presenta un paciente con pancreatitis crónica alcohólica con una queratitis ulcerativa periférica (QUP) en el ojo derecho (OD) y una úlcera estromal necrotizante e hifema en el ojo izquierdo (OI) asociadas a una malnutrición calórico-proteica con déficit de vitaminas liposolubles. Discusión: Aunque es raro en los países desarrollados, debe considerarse el déficit de vitamina A ante afectación corneal bilateral en pacientes alcohólicos, con patología gastrointestinal, pancreát...

Calidad de vida relacionada con la salud del niño y del adolescente con obesidad

OpenAIRE

Hurtado-Valenzuela, Jaime Gabriel; Álvarez-Hernández, Gerardo

2014-01-01

Objetivo Estimar la calidad de vida relacionada con la salud (CVRS) en un grupo de niños y adolescentes con obesidad de la ciudad de Hermosillo, Sonora, México. Métodos Se realizó un estudio transversal utilizando el cuestionario PedsQL® para comparar la CVRS de 200 niños y adolescentes con obesidad al igual que a sus padres, con dos grupos de control, uno de la comunidad (n=400) y otro grupo de usuarios (n=200) del Hospital Infantil del Estado de Sonora. Las diferencias en la CVRS fueron eva...

Pulpotomía con electrocauterio en pacientes con hemofilia A

OpenAIRE

Carbonell Rodriguez, Rosario

2017-01-01

Rehabilita la salud oral de un niños con Hemofilia A, empleando el Electrocauterio como una alternativa en la terapia pulpar, específicamente en la pulpotomía, para lo cual se realiza un minucioso examen clínico y anamnesis, que respaldados con exámenes complementarios, permite determinar el plan de tratamiento. La rehabilitación integral se llevó a cabo, previo consentimiento informado del padre, en sala de operaciones bajo anestesia general, debido a la condición sistémica del niño. Incl...

Intervención con menores con adicciones desde Proyecto Hombre

OpenAIRE

Pardo-Esteban, Belén; Escalza-González, Amaia

2015-01-01

En el citado seminario informaremos del programa de atención y prevención de las toxicomanías y otras adicciones, llevado a cabo por la Asociación Proyecto hombre. A continuación, trataremos la formación en adicciones y toxicomanía con los estudiantes, mediante charla, cuestionarios sobre conocimientos básicos en prevención de toxicomanía en menores y los diferentes programas de intervención posibles aducados a los perfiles de los usuarios. Terminaremos con un debate sobre los temas tra...

NARRATIVAS CONVERSACIONALES CON FAMILIAS Y DOCENTES DE NIÑOS Y NIÑAS CON DISCAPACIDAD: UN APORTE METODOLÓGICO

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NORA ANETH PAVA-RIPOLL

2015-01-01

Full Text Available Se presentan algunas ventajas y limitaciones de las narrativas conversacionales como estrategia de investigación para el trabajo con familias y docentes de niños con discapacidad. La narración realizada por muchas voces, como sucede en una conversación, privilegia la relación y el discurso entre las personas como fuente de construcción consensuada de significados. La interacción triádica entre familia, inclusión educativa y salud orientó los encuentros conversacionales con padres, acudientes y profesores de estos niños en la ciudad de Manizales (Colombia. Los participantes conformaron equipos conversacionales y equipos reflexivos y conversaron sobre preguntas propuestas, previamente elaboradas. Con este ejercicio investigativo se resalta el valor interaccional de esta estrategia desde tres ámbitos: entre los par ticipantes, con el investigador y con el contexto situacional. Se argumenta que la reflexividad está más relacionada con el hacer que con el ser y el sentir de las personas, las cuales no necesariamente se transforman en la narrativa...

Efecto de la ración alimenticia sobre la maduración gonadal y acumulación de grasa de anchoveta peruana (Engraulis ringens Jenyns, 1842 en cautiverio Effect of feeding ration on gonad maturation and fat accumulation in Peruvian anchovy (Engraulis ringens Jenyns, 1842 in captivity

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Carlos Espinoza

2009-01-01

Full Text Available Se evaluó el efecto de la ración alimenticia sobre la tasa de maduración gonadal, el desempeño de las gónadas maduras y la redistribución de la energía consumida en gónada, músculo o grasa corporal en ejemplares de anchoveta peruana Engraulis ringens en condiciones de cautiverio Estos resultados ayudan a comprender los procesos reproductivos ocurridos en el medio natural ante alteraciones de factores ambientales tales como los eventos El Niño y La Niña, de gran implicancia en el ecosistema y las pesquerías del Pacífico oriental. El tiempo trascurrido desde el estadio inmaduro hasta vitelogénico fue de 45 días bajo condiciones alimenticias energéticamente óptimas y temperatura alrededor de 16,5°C (46,1 cal g-1 pez día-1 . Las hembras alimentadas con 138,3 cal g-1 pez día-1 alcanzaron la máxima vitelogénesis en 30 días y, aunque el alimento fue excesivo, no incrementaron su masa muscular pero si presentaron mayor acumulación de grasa corporal y presencia de ovocitos más grandes, lo cual indica un incremento en el almacenamiento energético en la hembra y su progenie. Los ovocitos vitelogénicos de los peces alimentados con 46,1 cal g-1 pez día-1 presentaron atresia más rápido que los ovocitos vitelogénicos de peces alimentados con 138,3 cal g-1 pez día-1 . Aunque la cantidad de alimento fue adecuada, las hembras no desovaron durante el experimento. En machos, la disponibilidad de alimento también aceleró la maduración gonadal pero la expulsión de espermatozoides parece haber estado condicionada por la presencia de hembras con ovocitos en máximo estado de vitelogénesis.We analyzed the effect that feeding rations have on gonad maturation, mature gonad performance, and the redistribution of the energy taken up by the gonads, muscle, and body fat in captive specimens of Peruvian anchovy (Engraulis ringens. These results help us understand the reproductive processes occurring in the natural environment given changes

MODELADO CON REDES DE PETRI E IMPLEMENTACIÓN CON GRAFCET DE UN SISTEMA DE MANUFACTURA FLEXIBLE CON PROCESOS CONCURRENTES Y RECURSOS COMPARTIDOS

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Johanna Stella Castellanos Arias

2010-01-01

Full Text Available En este trabajo, se presenta el modelado de un Sistema de Manufactura Flexible (SMF, con procesos concurrentes y recursos compartidos mediante Sistemas a Eventos Discretos (SED, específicamente Redes de Petri (RdP, y GRAFCET. El SMF se plantea como un modelo hipotético que se modela con una RdP con el objeto de identificar su dinámica y hallar la secuencia óptima de funcionamiento del sistema. Se desarrolló un modelo matemático que permite estimar el vector de tiempo acumulado de un proceso modelado mediante una RdP, el cual constituye la base para hallar la mejor secuencia posible del sistema modelado. Por último, se realizó una implementación en el Laboratorio de Automatización de la Universidad Militar Nueva Granada, que simula el funcionamiento del SMF modelado por un montaje electrohidroneumático controlado con GRAFCET mediante PLC.

Relación del perfil salival con el grado de inmunosupresión en pacientes infectados con VIH con y sin tratamiento antirretroviral

OpenAIRE

Vera Cruz, Moisés; Cornejo Salaza, José; Chiyong, Teresa Evaristo; Arevalo Abanto, Jorge A.; Villanueva Vílchez, Hugo G.

2014-01-01

El objetivo del estudio fue evaluar el perfil salival de pacientes con infección por VIH con y sin Tratamiento Antirretroviral de Gran Actividad (TARGA), por medio de la evaluación de los síntomas de hipofunción salival (Xerostomía, Disgeusia, Disfagia y Susceptibilidad de desarrollar úlceras orales), la Tasa de Flujo salival no estimulado, el pH salival y la viscosidad salival; estableciendo su relación con el Grado de Inmunosupresión, evaluado por medio del Recuento de Linfocitos CD4/μl. Se...

Recent Developments in the Chemical Thermodynamics of the Uranium Chalcogenides; Progres Accomplis Recemment dans la Thermodynamique Chimique des Chalcogenures d'Uranium; Poslednie dostizheniya v khimicheskoj termodinamike khal'kogenidov Urana; Recientes Progresos en la Termodinamica Quimica de los Calcogenidos de Uranio

Energy Technology Data Exchange (ETDEWEB)

Westrum, Jr., E. F. [University of Michigan, Ann Arbor, MI (United States)

1966-02-15

thermodynamiques sont en bon accord avec le systeme d'estimation de l'entropie de Gronvold et Westrum. (author) [Spanish] La extension a temperaturas mas elevadas de los datos criotermicos correspondientes al U{sub 4}O{sub 11} ha puesto de manifiesto los aspectos termoffsicos de la transicion estructural gradual (sospechada) de tipo lambda a 348 Degree-Sign K, con un correspondiente aumento de entropia igual a 1,84 cal/gfm Degree-Sign K, vinculado al desplazamiento de atomos de oxigeno intersticiales. Las mediciones, de la capacidad calorifica y de la susceptibilidad magnetica, realizadas con UO{sub 2}'Mallinckrodt' sinterizado, confirmaron que la transicion antiferromagnetica-paramagnetica tiene lugar a 30,4 Degree-Sign K con una variacion de capacidad calorifica igual a 400 cal/gfm Degree-Sign K, en lugar de producirse a 28,7eK con una variacion de 9 cal/gfm eK, segun se informa en la literatura tecnica. Con ello se puede interpretar ahora la anomalia termica hallada en el U{sub 3}O{sub 7}-{beta}. La capacidad calorifica a bajas temperaturas de muestras bien caracterizadas de UO{sub 3}-{alpha}, UO{sub 3}-{beta} y UO{sub 3} -{gamma}, preparadas por el Dr. E.H.P. Cordfunke, del Reactor Centrum Nederland, se combina con estas capacidades calorificas a temperaturas mas elevadas, con las entalpias de formacion y con otros datos termodinamicos, para obtener datos de estabilidad relativa correspondientes a esos importantes materiales nucleares. Tanto el monoseleniuro como el diseleniuro de uranio poseen anomalias de tipo lambda vinculadas al desordenamiento magnetico. La del diseleniuro de uranio se produce a 13,1 Degree-Sign K, con un incremento de entropia igual a 0,16 cal/gfm Degree-Sign K. La anomalia de 160 Degree-Sign K tiene un incremento de entropia de 1,0 cal/gfm eK, que puede compararse con el valor 1,17 encontrado para el monosulfuro cerca de los 180 Degree-Sign K. Ambas anomalias termicas observadas en los monocalcogenidos surgen como consecuencia del desordenamiento del

AGROCOMBUSTIBLES VS. HAMBRE: UNA ECUACIÓN ENERGÉTICA CON RESULTADO NEGATIVO PARA LA POBLACIÓN POBRE EN ECOLOMBIA

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Sara Eloisa Del Castillo Matamoros

2011-03-01

Full Text Available En Colombia, como lo acepta el misterio del ramo, existen problemas de disponibilidad de alimentos. El incremento en los precios de los alimentos como consecuencia de la producción de agrocombustibles que entran a competir con el alimento de los seres humanos, es una situación reconocida hasta por los voceros del Banco Mundial, organización que otrora promovía la producción de agrocombustibles como alternativa para sacar al campo del olvido al que había estado condenado por las economías latinoamericanas en las últimas décadas. Son numerosas las evidencias que demuestran que al incentivar la producción de agrocombustibles se promueve el monocultivo, lo cual conduce al deterioro de los suelos, generando una mayor dificultad para asegurar una producción nacional de alimentos que garantice la disponibilidad como componente esencial de la seguridad alimentaria y nutricional. Con el maíz necesario para producir el etanol que requiere un automóvil del primer mundo para recorrer 32.000 km/año, podrían cubrirse las necesidades calóricas diarias de una persona durante 62 años. En Colombia, por ejemplo, la mayoría de las regiones y departamentos que hacen parte de los grandes megaproyectos para la producción de agrocombustibles supera de manera importante el promedio nacional en desnutrición crónica que es del 12% para los menores de cinco años y de 12,6% para los escolares, según los resultados de la ENSIN 2005. Los profesionales del área de la salud deben conocer y analizar estas políticas que ponen en riesgo la seguridad alimentaria de la población màs desfavorecida del país.

SATISFACCIÓN CON EL TRATAMIENTO EN PACIENTES DE ATENCIÓN PRIMARIA CON ARTROSIS

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Carmen Llanos Val Jiménez

2017-01-01

Full Text Available Fundamentos: Al igual que en otros problemas crónicos, en el abor - daje del paciente con artrosis se tiende a un modelo de toma de decisiones compartidas, en el que el punto de vista del paciente debe ser considerado en la elección del tratamiento. El objetivo de este trabajo fue evaluar la sa - tisfacción con el tratamiento en pacientes diagnosticados de osteoartrosis y comprobar si existen diferencias entre diferentes opciones farmacológicas, así como determinar si existe asociación con el estado funcional y las carac - terísticas clínicas y sociodemográficas. Métodos: Se realizó un estudio observacional transversal en una muestra de 487 pacientes seleccionados mediante muestreo consecutivo. La variable principal fue el nivel de satisfacción con el tratamiento (cuestionario ARTS. El estado funcional de los pacientes fue evaluado mediante la escala WO - MAC. Otras variables fueron: características del tratamiento, adherencia te - rapéutica, eventos adversos, y variables clínicas y sociodemográficas. Resultados: En el cuestionario ARTS los pacientes, en un rango entre 28 y 87, obtuvieron una puntuación media de 65,3 (DE: 9,9. La puntuación no fue significativamente diferente en consumidores de 1, 2 o más fármacos. Entre quienes consumían un solo fármaco, no hubo diferencias entre los di - ferentes tipos de fármacos. En el estado funcional se obtuvo una puntuación media de 30,2 puntos (DE: 20,8 y se observó una débil correlación negativa con el nivel de satisfacción (r= - 0,252; p<0,001. Mediante regresión lineal múltiple, se observó mayor puntuación en la escala ARTS (p<0,05 en pa - cientes con menor puntuación en la escala WOMAC, mayor edad y ausencia de eventos adversos. Conclusión : En pacientes con osteoartritis se observa un nivel mode - rado de satisfacción con el tratamiento farmacológico, condicionado por su situación funcional, sus características sociodemográficas y por la presencia de eventos

Os novos territórios da produção e do trabalho: a indústria de calçados no Ceará

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Jacob Carlos Lima

Full Text Available Este artigo objetiva analisar a relocalização industrial do setor calçadista para o Nordeste a partir da década de 1990, bem como o perfil dos "novos" contingentes de trabalhadores decorrentes desse processo. A quase inexistência de um mercado de trabalho formal anterior torna o emprego fabril nesses novos territórios atrativo para trabalhadores mais escolarizados. Para as empresas, a atração encontra-se nos incentivos fiscais, no baixo custo da força de trabalho e na baixa mobilização desses contingentes de trabalhadores. O recorte empírico é o Ceará, que se tornou, com a política de interiorização industrial, o terceiro produtor de calçados no País, com unidades fabris distribuídas de forma desconcentrada pelo estado. A pesquisa constou de: dados secundários obtidos em associações e sindicatos patronais nacionais e em órgãos empresariais e governamentais; entrevistas com dirigentes sindicais de quatro cidades; e aplicação de questionário a 197 trabalhadores de seis fábricas - oriundas do Sul e Sudeste - localizadas em diferentes regiões do estado.

Hidroxilación de fenol con catalizadores ZSM-5 modificado con cobre

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César Augusto Caro

2005-01-01

Full Text Available Se sintetizaron varios catalizadores Cu-ZSM-5 con diferentes relaciones Si/Al y Si/Cu. Usando metilamina o hidróxido de sodio como agente mineralizante. Los catalizadores se caracterizaron por DRX, IR, análisis BET, UV-VIS y análisis elemental. El desempeño catalítico de los catalizadores sintetizados se evaluó en la hidroxilación de fenol con H2O2. Se encontró que la relación catecol (CAT/(hidroquinona (HQ + p-benzoquinona (PBQ aumentó con el contenido de agua, presentó un máximo cuando la relación en peso de agua/fenol fue de 53/1 y se favoreció a altas temperaturas, con el aumento del contenido de aluminio o con la disminución en el contenido de catalizador. El contenido de cobre no fue un factor determinante para la conversión ni para la selectividad en la hidroxilación de fenol. La producción de la p-benzoquinona (PBQ, producto de oxidación de la hidroquinona, fue mínimo cuando se usaron las siguientes condiciones: 80 ºC, fenol: 1 mmol, relación molar fenol/H2O2 de 3/1, catalizador: 20 mg, agua: 5 g, tiempo de reacción: 4 h.

ESTUDIO DE LA DIGESTION HUMANA CON ALUMNOS CON DIFICULTADES DE APRENDIZAJE

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Mª Begoña Carretero Gómez

2009-01-01

Full Text Available En esta experiencia se han seleccionado una serie de actividades relacionadas con la digestión con el fin de lograr una reestructuración de ideas y cambios conceptuales, y así con la conseguir que el alumnado aprenda a construir sus propios conocimientos acerca de cómo y donde se dan los procesos de digestión necesarios para la nutrición del organismo. El trabajo se ha llevado a cabo con alumnos de 3º de Educación Secundaria Obligatoria, pertenecientesal programa de diversificación curricular. Hemos querido hacer la ciencia más cercana para que comprendan que algunos procesos tienen su explicación científica y que la ciencia forma parte de nuestro día a día, fomentando el interés del estudiante así como su implicación en el proceso de enseñanza-aprendizaje. Por ello hemos trabajado a base de pequeñas investigaciones, donde es el alumno el que marca su ritmo de trabajo, investiga y hace sus aportaciones. Han aprendido a trabajar de una forma meticulosa donde el rigor esfundamental, contagiándose del afán investigador de manera que al realizar las experiencias se han aproximado al trabajo científico a la vez que aclaran y reestructuran conocimientos.

Risk of preterm birth by subtype among Medi-Cal participants with mental illness.

Science.gov (United States)

Baer, Rebecca J; Chambers, Christina D; Bandoli, Gretchen; Jelliffe-Pawlowski, Laura L

2016-10-01

Previous studies have demonstrated an association between mental illness and preterm birth (before 37 weeks). However, these investigations have not simultaneously considered gestation of preterm birth, the indication (eg, spontaneous or medically indicated), and specific mental illness classifications. The objective of the study was to examine the likelihood of preterm birth across gestational lengths and indications among Medi-Cal (California's Medicaid program) participants with a diagnostic code for mental illness. Mental illnesses were studied by specific illness classification. The study population was drawn from singleton live births in California from 2007 through 2011 in the birth cohort file maintained by the California Office of Statewide Health Planning and Development, which includes birth certificate and hospital discharge records. The sample was restricted to women with Medi-Cal coverage for prenatal care. Women with mental illness were identified using International Classification of Diseases, ninth revision, codes from their hospital discharge record. Women without a mental illness International Classification of Diseases, ninth revision, code were randomly selected at a 4:1 ratio. Adjusting for maternal characteristics and obstetric complications, relative risks and 95% confidence intervals were calculated for preterm birth comparing women with a mental illness diagnostic code with women without such a code. We identified 6198 women with a mental illness diagnostic code and selected 24,792 women with no such code. The risk of preterm birth in women with a mental illness were 1.2 times higher than women without a mental illness (adjusted relative risk, 1.2, 95% confidence interval, 1.1-1.3). Among the specific mental illnesses, schizophrenia, major depression, and personality disorders had the strongest associations with preterm birth (adjusted relative risks, 2.0, 2.0 and 3.3, respectively). Women receiving prenatal care through California's low

Esporotricosis cutánea diseminada con compromiso articular en una mujer con diabetes tipo 2

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Sendy Solorzano

Full Text Available La esporotricosis diseminada es una presentación infrecuente de esta micosis. Aunque ha sido descrita en sujetos inmunocompetentes, con frecuencia existe compromiso de la inmunidad mediada por células T. Reportamos el caso de una mujer con diabetes tipo 2 no controlada que desarrolló esporotricosis cutánea diseminada. El curso de la enfermedad presentó varias complicaciones que incluyeron hepatitis secundaria a itraconazol y artritis de la rodilla con cultivo positivo para Sporothrix schenckii durante el tratamiento con solución saturada de ioduro de potasio. La discusión del caso incluye aspectos de la patogénesis de la esporotricosis diseminada y el manejo de la infección y sus complicaciones.

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......) double-, triple- and quadruple-mutants constructed from the most active single mutants. Based on the benchmark test at least 20 new promising mutants are identified....

Riscos ocupacionais de uma indústria calçadista sob a ótica dos trabalhadores

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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.

Development of Mars Simulation Chamber in support for the science associated to the Raman Laser Spectrometer (RLS) Instrument for ESAS's ExoMars mission

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Catalá Espí, Alejandro

2015-01-01

Desde que Giovanni Schiaparelli observara los canales marcianos y Percival Lowell los interpretara erróneamente, el interés en torno a Marte y la especulación de la existencia de vida extraterrestre (incluso inteligente) en su superficie caló hondo en la cultura popular. Este impulso cultural trascendió al ámbito científico y con la tecnología ya madura, la NASA inició programas de exploración del planeta rojo. Comenzando con las sondas Mariner y siguiendo con los aterrizadores Viking, Mar...

Estudio de dos materiales volcánicos y efecto del tipo de molienda en su reactividad

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Diana M Burgos

2014-08-01

Full Text Available En este estudio se presenta la caracterización y evaluación de la actividad puzolánica de dos materiales volcánicos procedentes de dos depósitos volcánicos Colombianos (Volcán Puracé y Nevado del Tolima. Estos materiales fueron analizados mediante diversas técnicas de caracterización, la aptitud de los materiales volcánicos como puzolanas y el efecto de la molienda en su reactividad, se evaluó por medio del índice de Actividad Puzolánica (iaP, ensayo de Frattini. Los resultados indican que el MVP presenta un iaP de 77,51% y se ubica en la zona reactiva de la curva de Frattini, características que permiten clasificar este material como una puzolana natural. En cuanto al MVT los resultados indicaron que químicamente no reaccionó, pero generó un índice de resistencia de 92,36% respecto a la muestra patrón, características de un material inerte que por efecto filler permite el desarrollo de resistencias mecánicas. Por otra parte, también se evidenció que no existe un efecto significativo del proceso de molienda en la reactividad de estos materiales.

Micropropagaión de Stevia rebaudiana Bertoni, un endulzante natural a través de explantes con meristemos pre existentes

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Isidro Suárez

2014-01-01

Titulo corto: Micropropagación de Stevia rebaudiana Bertoni  Resumen: Las hojas de Stevia rebaudiana son fuente de esteviosidos y rebaudiosidos, sustancias endulzantes con bajo contenido calórico. La propagación sexual y clonal de estevia es difícil debido a la calidad de la semilla y el tamaño reducido de la planta. Para evaluar la multiplicación, brotes establecidos in vitro fueron cultivados en ½ MS con cinco  concentraciones de BAP (0.0, 2.22, 4.44, 8.88 y 17.6 µM. Posteriormente, los tallos multiplicados se subcultivaron en presencia de cinco concentraciones de ANA (0.0, 2.69, 5.37, 10.74 de 21.48 µM para evaluar enraizamiento. Finalmente, tallos multiplicados sin enraizar, tratados o no con 0.4% de ANA, y otros enraizados in vitro fueron transferidos a condiciones ex vitro. Todos los experimentos fueron distribuidos usando un DCA. Los resultados indicaron que el medio 1/2MS adicionado con BAP indujo una mayor tasa de multiplicación. 10.74 µM de ANA indujo el mejor enraizamiento; sin embargo, los tallos sin enraizamiento resultaron en la mayor supervivencia ex vitro. Palabras clave: estevia, esteviosido, micropropagación, reguladores de crecimiento vegetal.  Abstract: Stevia rebaudiana Bertoni leaves are source of stevioside and rebaudioside, non-caloric sweetener substances. Seed and cutting estevia propagation are difficult due to seed sterility and small size plant.  To evaluate shoot proliferation, in vitro-established estevia shoots were cultured in ½ MS with five (0.0, 2.22, 4.44, 8.88 and 17.6 µM BAP levels.  Afterwards, proliferated shoots were cultured on ½ MS with five NAA levels (0.0, 2.69, 5.37, 10.74 and 21.48 µM to evaluate shoot rooting.  Finally, non-rooted shoots, in vitro-rooted shoots and non-rooted shoots treated with a 0.4% NAA powder were transferred to ex vitro conditions.  All experiments were distributed using a complete randomized design. The data indicated that BAP treated shoots showed a higher rate of shoot

Efectos del tratamiento con litio sobre las funciones neurosicológicas de pacientes con trastorno bipolar de tipo I

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Anabel Martínez Aran

2008-11-01

Full Text Available OBJETIVO: determinar si el tratamiento continuo con litio influye en el desempeño cognitivo de un grupo de pacientes eutímicos con trastorno afectivo bipolar I. MÉTODO: se evaluó el desempeño cognitivo usando pruebas neurosicológicas de atención, memoria y función ejecutiva en 20 pacientes eutímicos con trastorno afectivo bipolar I que no tomaban medicación, 20 pacientes eutímicos con trastorno afectivo bipolar I quienes continuaban regularmente el tratamiento con carbonato de litio, y un tercer grupo de 20 pacientes control. RESULTADOS: no se encontraron diferencias estadísticamente significativas entre los dos grupos de pacientes con trastorno afectivo bipolar. Sin embargo, al compararlos con el grupo control, su desempeño en términos de memoria verbal, viso-verbal y asociación semántica medida fue menor. DISCUSIÓN: los pacientes con trastorno afectivo bipolar I muestran deficiencias en términos de memoria verbal y viso-verbal que no pueden ser atribuidos al tratamiento regular con carbonato de litio. Por el contrario, estas deficiencias podrían ser consideradas como características de rasgo de este trastorno.

Avaliação epidemiológica dos pacientes vítimas de queimadura ocular pelo agente químico cal no Serviço de Oftalmologia do Hospital Universitário Evangélico de Curitiba Epidemiological assessment at the Ophthalmology Departament of the Evangelic University Hospital of Curitiba of patients victims of ocular lime burns

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Alessandra Guerra Daros Castellano

2002-06-01

Full Text Available Objetivo: Avaliar o perfil epidemiológico dos pacientes vítimas de queimadura ocular pelo agente químico cal, no Serviço de Oftalmologia do Hospital Universitário Evangélico de Curitiba, enfatizando-se os casos de queimaduras oculares pela "Bomba de Cal". Métodos: Estudo prospectivo de 88 pacientes com queimadura ocular pela cal (cal sem explosão ou bomba de cal, que procuraram o serviço de Pronto Atendimento do referido hospital no período de setembro de 1999 a setembro de 2000. Resultados: Dos 88 pacientes avaliados 73 (82,95% foram vítimas de queimadura ocular pela cal no ambiente de trabalho e 15 (17,24% foram vítimas da "Bomba de Cal" (brincadeira regional. A maioria dos pacientes examinados foi do sexo masculino, com faixa etária entre 20 e 40 anos, com predomínio de queimadura ocular unilateral e grau I quando vítimas de acidente de trabalho e bilateral e grau IV quando a queimadura foi resultante da "Bomba de Cal". Conclusão: Comparando-se os grupos estudados observou-se que o grupo vítima de queimadura ocular pela "Bomba de Cal" apresentou maior agravo à saúde ocular demonstrado, neste estudo, pela bilateralidade, gravidade das lesões e idade mais precoce de acometimento dos pacientes.Purpose: The assessment of the epidemiological profile of patients victims of lime ocular burns, by the Ophthalmology Department of the Evangelic University Hospital of Curitiba, with emphasis on "Lime Bomb" burn cases. Methods: A study on 88 ocular lime burn patients (lime bomb or not, who came to the HUEC Emergency Service from September 1999 to September 2000. Results: Of 88 patients that were evaluated, 73 (82.95% had suffered ocular lime burn in their working place and 15 (17.24% had suffered it due to the `Lime Bomb" itself (local custom. Most of the patients that were examined were males, aged 20-40 years, with predominance of unilateral ocular burn and degree I in case of accident at the workplace, and bilateral and degree IV in

Acne polimorfo: tratamiento con Implacen

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Rubén Pérez Armas

1995-06-01

Full Text Available Se realiza el estudio de 40 pacientes con acné polimorfo, los que fueron atendidos en la Consulta de Dermatología del Hospital Provincial Clinicoquirúrgico Docente "Celia Sánchez Manduley", en el período comprendido de enero de 1988 a diciembre de 1989. Se revisa la literatura médica sobre los diversos métodos y medicamentos utilizados en la terapéutica de esta dermatosis. Se describe el esquema de tratamiento empleado con implacén en 30 pacientes; los 10 restantes se trataron con placebo; se compara dicho esquema con los tradicionales y se observan mejores resultados con nuestro estudio. Se destaca la ausencia de recaídas, así como el resultado del tratamiento de acuerdo con el sexo.A study was performed in 40 patients presenting with polymorphic acne who were attended in the Dermatology Department of "Celia Sánchez Manduley" Clinicosurgical and Teaching Hospital from January, 1988 to December, 1989. A review of the literature was made seeking for the different methods and drugs used for the treatment of this dermatosis. The treatment schedule with the use of implacen in 30 patients is described. Such therapeutic schedule was compared with traditional ones and better results were observed with the use of implacen. The fact that there were no relapses is highlighted, as well as the result of treatment according to sex.

Reducción de color con cloruro de magnesio en soluciones con colorantes comerciales

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Mercedes Lucero Chávez

2017-01-01

Full Text Available Se experimentó con diferentes concentraciones de cloruro de magnesio (MgCl2 como coagulante para reducir el color en soluciones con colorantes comerciales: negro, azul y café. Los parámetros analizados fueron pH, color, demanda química de oxígeno ( dqo y sólidos suspendidos totales (sst de acuerdo con las Normas Mexicanas. Como prueba complementaria se agregó carbón activado a las muestras para reducir el color residual después de la coagulación-floculación. La reducción de los valores de color y dqo fue mayor cuando se adicionó más cantidad de MgCl2 (1.8 g/L. Los porcentajes de reducción fueron ≥90% para el color y >50% para la dqo. Los sst aumentaron con la adición de MgCl2. El carbón activado eliminó el color residual.

Aprende Ajedrez con Rey - Parte 2

OpenAIRE

ESTÉVEZ MONTERO, RAÚL; Lloret Mauri, Jaime

2016-01-01

Es una pieza audiovisual creada con el objeto de atraer la atención de los niños de muy corta edad con el ajedrez y familiarizarlos con todas sus piezas y movimientos. Es una animación dirigida a un público infantil presentada por dibujos animados en 2D, en la que se ha intentado respetar en todo momento el argot de la comunidad ajedredística. En este video se presenta la segunda parte. Estévez Montero, R.; Lloret Mauri, J. (2016). Aprende Ajedrez con Rey - Parte 2. http://hdl.handle.net/1...

Aprende Ajedrez con Rey - Parte 1

OpenAIRE

ESTÉVEZ MONTERO, RAÚL; Lloret Mauri, Jaime

2016-01-01

Es una pieza audiovisual creada con el objeto de atraer la atención de los niños de muy corta edad con el ajedrez y familiarizarlos con todas sus piezas y movimientos. Es una animación dirigida a un público infantil presentada por dibujos animados en 2D, en la que se ha intentado respetar en todo momento el argot de la comunidad ajedredística. En este video se presenta la primera parte. Estévez Montero, R.; Lloret Mauri, J. (2016). Aprende Ajedrez con Rey - Parte 1. http://hdl.handle.net/1...

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

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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.

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

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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.

Potencialidades de um caulim calcinado como material de substituição parcial do cimento portland em argamassas Potentialities of a calcined kaolin as material of partial replacement of portland cement in mortars

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Marilia P. de Oliveira

2006-06-01

Full Text Available A utilização de argilas calcinadas na forma de metacaulinita, como material pozolânico para argamassas e concretos, tem recebido atenção considerável nos últimos anos. Este trabalho objetivou avaliar o desempenho mecânico de argamassas, nas quais foi utilizado um caulim calcinado proveniente do Estado da Paraíba, como material de substituição parcial do cimento Portland. Utilizaram-se duas finuras do caulim: passando nas peneiras ABNT 200 (0,074 mm e 325 (0,044 mm e calcinados nas temperaturas de 700, 800 e 900 ºC pelo tempo de 2 h. As amostras foram caracterizadas através de análise química, análise térmica diferencial, difração de raios-X e área específica. Obteve-se o índice de atividade pozolânica com a cal e o cimento Portland. O percentual de substituição adotado foi de 0, 10, 20, 30 e 40%. A relação aglomerante: areia foi de 1:1,5 e a relação água/aglomerante fixada igual 0,4. O efeito da substituição parcial do cimento na argamassa foi avaliado através da resistência à compressão simples, nas idades de 7, 28 e 90 dias. As argamassas estudadas apresentaram resistência superior em relação à da referência, até o nível de 30% de substituição.The use of burnt clays, in the metakaolin form, as pozzolanic material for mortars and concretes has received a remarkable attention in the last years. This paper aimed to evaluate the mechanical property of mortars, in which a calcined kaolin originating from the State of Paraiba, was used as partial cement replacement material. Two finess of the kaolin were used: ABNT 200 (0.074 mm and 325 (0.044 mm and burnt at temperatures of 700, 800 and 900 ºC for a period of 2 h. Both materials were characterized by chemical analysis, differential thermal analysis, X-ray diffraction, specific area tests. The pozolanic activity index was obtanied using lime and cement Portland. The amounts of replacement were 10, 20, 30 and 40%, besides the reference mortar. The binder

Videojuego con Realidad Virtual

OpenAIRE

González Mora, César

2017-01-01

El objetivo del proyecto es el desarrollo de un videojuego deportivo que utilice realidad mixta. El videojuego se podrá utilizar con dispositivos de tipo cardboard, y utilizará realidad aumentada para la interacción del jugador con el videojuego. En el desarrollo se utilizará el motor Unity para conseguir una aplicación multiplataforma, y la librería Vuforia para implementar realidad mixta.

Efeitos da cal e do cimento na modificação dos solos para fins rodoviários: mecanismos de reação, parâmetros de caracterização geotécnica e resistência mecânica

OpenAIRE

Portelinha, Fernando Henrique Martins

2008-01-01

Nessa pesquisa, avaliou-se o emprego de pequenos teores de cal hidratada e de cimento Portland na estabilização química de dois solos residuais de gnaisse da Zona da Mata Norte de Minas Gerais, Brasil, com vistas a aplicações em estradas. O estudo abrangeu os seguintes tópicos: (i) caracterização tecnológica dos solos e misturas, envolvendo ensaios de caracterização (granulometria e limites de Atterberg) dos solos melhorados com cimento e com cal, considerando-se diferentes teores de estabili...

Factores psicosociales relacionados con la rehospitalización de pacientes con psicosis orgánica

Directory of Open Access Journals (Sweden)

Cortés-Padilla María Teresa

2001-01-01

Full Text Available Objetivo. Conocer los factores psicosociales relacionados con la frecuente rehospitalización de pacientes con psicosis orgánica. Material y métodos. Estudio de tipo observacional descriptivo, de corte transversal. La muestra estuvo formada por 33 pacientes del Hospital Psiquiátrico Guillermo Dávila, con Unidad de Medicina Familiar Número 10 del Instituto Mexicano del Seguro Social de la Ciudad de México, con psicosis orgánica y quienes durante los años de 1993-1994 presentaron más de dos rehospitalizaciones. Instrumentos: Entrevista grabada, o muestra de conversación de cinco minutos, para la emoción expresada (EE, cuestionarios mixtos para la Concepción de Enfermedad y la Relación médico-paciente. La validez y confiabilidad de los datos se establecieron con las pruebas de Kappa y Alpha de Cronbach y se efectuó análisis estadístico descriptivo e inferencial. Resultados. El 60.9% de los familiares presentan alto nivel de EE, es decir, expresan crítica, hostilidad o sobreinvolucramiento emocional; el 64.3% de los sujetos de la muestra conviven más de 35 horas a la semana con familiares que presentan Alta EE. Conclusiones. Altos niveles de EE estuvieron asociados con los frecuentes reingresos a hospitalización. Existe mayor conocimiento de las características de la enfermedad por parte del familiar que del paciente. La relación médico-paciente es satisfactoria pero no forma conciencia de enfermedad ni propicia apego al tratamiento terapeútico. El texto completo en inglés de este artículo está disponible en: http://www.insp.mx/salud/index.html

Actividad hidráulica de un cemento belítico obtenido a partir de cenizas volantes tipo C: influencia del aditivo y tipo de curado

OpenAIRE

Goñi, S.; Guerrero, A.

2006-01-01

En este trabajo se discute la influencia del tipo de curado y de un aditivo reductor de la demanda de agua en la actividad hidráulica de un cemento belítico de cenizas volantes de alto contenido en cal denominado (CBCV-2-A). Este cemento ha sido sintetizado por una ruta húmeda hidrotermal con posterior calcinación, empleando ceniza volante de alto contenido en cal (ASTM tipo C) como materia prima. La actividad hidráulica se ha estudiado en la pasta de cemento, durante un periodo de 180 días, ...

Impacto de las estrategias de ingresos sobre la seguridad alimentaria en comunidades rurales Mayas del norte de Campeche

OpenAIRE

Pat Fernández, Lucio A; Nahed Toral, José; Parra Vázquez, Manuel R; García Barrios, Luis; Nazar Beutelspacher, Austreberta; Bello Baltazar, Eduardo

2010-01-01

En este artículo se examina el efecto de las estrategias de ingresos sobre la suficiencia de consumo calórico en grupos domésticos (GD) mayas de Campeche, México. El análisis se basó en el enfoque de modos de vida y la información se obtuvo de una encuesta censal de hogares (N=237) en cuatro comunidades. Los resultados revelan que todos los GD tienen una estrategia de ingreso diversificada con una orientación claramente definida. El índice de seguridad calórica (ISC) es diferente (p

Biobanks in South Africa: A global perspective on privacy and ...

African Journals Online (AJOL)

universally accepted ethical guidelines on privacy and confidentiality of autonomous persons and whether these guidelines .... In the third instance, what is UNESCO's interpretation of the con- ... cal, psychological, social, cultural and spiritual dimensions and all .... solicited by interested parties via application in terms of the.

Análisis probabilista con caminata al azar del número de personas viviendo con VIH mundialmente

Directory of Open Access Journals (Sweden)

Javier Oswaldo Rodríguez-Velásquez

2018-01-01

Full Text Available Introducción: El estudio de la dinámica anual de la epidemia de VIH a partir de la caminata al azar ha mostrado ser de utilidad para llevar este fenómeno altamente variable a un comportamiento predecible Objetivo: Predecir el comportamiento de la dinámica del número de personas viviendo con VIH mediante la caminata al azar probabilista. Metodología: Se analizaron los valores anuales de personas que a nivel global viven con VIH desde el año 1990 hasta el 2009, a partir de los espacios de probabilidad generados con la caminata al azar probabilista, para posteriormente desarrollar la predicción del valor anual de personas viviendo con VIH para los años 2010, 2011 y 2012. Resultados: Se predijeron los valores anuales de personas viviendo con VIH con un porcentaje de acierto de 98,95% para el año 2010, de 98,82% para el año 2011 y de 98,99% para la predicción realizada para el año 2012. Conclusiones: Se establecieron órdenes matemáticos a partir de la caminata al azar probabilista, estableciendo predicciones prácticamente deterministas del número de personas viviendo con VIH, lo que podría ser útil para las decisiones en Salud Pública y para la evaluación de intervenciones.

Composição centesimal e valor calórico de alimentos de origem animal

Directory of Open Access Journals (Sweden)

TORRES Elizabeth A.F.S

2000-01-01

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.

Fuerza manual de adultos con discapacidad intelectual

Directory of Open Access Journals (Sweden)

Ruth Cabeza Ruiz

2017-09-01

Full Text Available Objetivo. Presentar una descripción de la fuerza de prensión manual de hombres y mujeres con discapacidad intelectual (DI y comparar los resultados con valores de referencia de otras personas con y sin discapacidad intelectual. Método. El presente trabajo es un estudio transversal observacional, financiado por la Fundación SAMU, en el que se evaluaron a 122 personas con DI (86 hombres y 36 mujeres durante el desarrollo de unas jornadas de carácter recreativo en las que participaron varias asociaciones de atención a este colectivo. La batería de test utilizada fue el Alpaha-Fit Test Battery for Adults. Resultados. Se presentan los resultados relacionados con las variables de fuerza del miembro superior (Hand Grip Strength por grupos de edad (20-24, 25- 29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59 años. Los datos muestran valores que oscilan desde los 31 kg en los hombres más jóvenes con DI hasta los 13.3 kg del grupo más maduro de mujeres. Estos hallazgos son similares a los valores de referencia de población con DI española. Sin embargo, son muy inferiores a los obtenidos por la población sin discapacidad de la misma edad. Conclusión. Los resultados evidencian el menor rendimiento de las personas con DI en pruebas de fuerza de prensión manual por lo que se hace evidente la necesidad de llevar a cabo programas de ejercicio físico o deporte con las personas con DI.

Sistemas integrados con Arduino

OpenAIRE

EL YAKOUTI, MOHAMMED

2017-01-01

Design of a robot prototype remotely controllable from Bluetooth using Arduino. Control and testing of sensors and events interacting with Arduino and Bluetooth. Diseño de un prototipo de robot controlable remotamente con Bluetooth utilizando Arduino. Control y verificación de los sensores y eventos que interactúan mediante el Arduino y el Bluetooth. El Yakouti, M. (2017). Sistemas integrados con Arduino. http://hdl.handle.net/10251/89274. TFGM

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

Directory of Open Access Journals (Sweden)

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.

fertilizada con diferentes abonos

Directory of Open Access Journals (Sweden)

Jorge Alberto Elizondo-Salazar

2007-01-01

Full Text Available Producción y calidad de la biomasa de morera (Morus alba fertilizada con diferentes abonos. Se llevó a cabo un experimento en la Estación Experimental “Alfredo Volio Mata” de la Universidad de Costa Rica con el fi n de evaluar la aplicación de 150 kg de N/ha/año proveniente de dos abonos orgánicos: lombriabono y compostaje; y de un fertilizante químico, sobre la producción y calidad de la biomasa de morera. El periodo experimental comprendió un ciclo de 12 meses, iniciando en julio del 2003 y fi nalizando en julio del 2004. Se utilizó una plantación de morera de 12 años de establecida con una densidad de siembra de 27.777 plantas/ ha. Se empleó un diseño de bloques completos al azar con cuatro tratamientos: dos abonos orgánicos, nitrato de amonio (33,5% N y un control. Las plantas se podaron a 0,6 m sobre el nivel del suelo al inicio del ensayo. Durante el periodo experimental, las plantas fueron podadas consecutivamente cada 90 días. Las hojas y los tallos fueron separados y analizados para determinar el contenido de materia seca y proteína cruda. La producción de materia seca fue 23% superior y el contenido de proteína cruda fue signifi cativamente mayor con el nitrógeno químico, mientras que el contenido de materia seca fue menor. No se encontraron diferencias signifi cativas entre el tratamiento control y los tratamientos orgánicos.

Estudio observacional prospectivo con insulina detemir en pacientes con diabetes mellitus tipo 2 mal controlados que inician por primer vez tratamiento con insulina (estudio SOLVE

Directory of Open Access Journals (Sweden)

Domingo Orozco-Beltrán

2016-02-01

Conclusiones: En esta cohorte de pacientes con diabetes mellitus tipo 2 recientemente insulinizados, la insulina detemir (una vez al día mejoró el control glucémico, con baja incidencia de hipoglucemia y una reducción significativa del peso.

Eficacia del tratamiento tópico con Vimang® en pacientes con estomatitis subprótesis

Directory of Open Access Journals (Sweden)

Laritza Coureaux Rojas

2013-10-01

Full Text Available Se efectuó un ensayo clínico terapéutico controlado de fase III en 120 pacientes con estomatitis subprótesis, atendidos en la Clínica Estomatológica Provincial Docente "Mártires del Moncada" de Santiago de Cuba, desde junio de 2010 hasta mayo de 2011, con vistas a evaluar la eficacia del tratamiento tópico con té de Vimang® en dichos pacientes. Se conformaron 2 grupos de 60 integrantes cada uno (de estudio y de control. Los primeros fueron tratados con enjuagatorios fríos de dicho té 4 veces al día y los segundos con el mismo tratamiento más vitaminas. Se utilizaron el porcentaje para variables cualitativas, así como la media aritmética y la desviación estándar para variables cuantitativas. Todos los integrantes del grupo de estudio se curaron y disminuyó el gasto de material, pero el costo-efectividad fue mayor por ser menor el tiempo de curación. El té de Vimang® resultó eficaz para eliminar las manifestaciones clínicas de esa lesión y no hubo reacciones adversas, de manera que se logró la curación de los afectados con ahorro de tiempo y recursos.

Trastornos temporomandibulares en pacientes con maloclusiones

Directory of Open Access Journals (Sweden)

Luis Soto Cantero

Full Text Available Introducción: existe una prevalencia de trastornos oclusales en gran medida relacionados con la presencia de disfunción temporomandibular. Objetivo: determinar el grado de disfunción temporomandibular según el Índice de Maglione en correspondencia con la prevalencia de maloclusiones en el área de salud del policlínico "Turcios Lima". Métodos: se realizó un estudio observacional descriptivo, de corte transversal, en la consulta de ortodoncia, de junio del 2008 a junio del 2009. De un universo constituido por los 280 pacientes que acudieron al servicio de ortodoncia en el período señalado con presencia de maloclusiones, se seleccionó una muestra de 84 pacientes por muestreo aleatorio simple, teniendo en cuenta los criterios de inclusión y exclusión realizados por criterios de expertos. Resultados: presentaban disfunción temporomandibular 74 pacientes y dentro de ellos 44 (52,4 % tenían disfunción grado II (Moderada. El 97 % de los pacientes con relación molar de clase II, presentaban disfunción temporomandibular. El 42,9 % de los pacientes con una maloclusión, presentaban disfunción grado I. El 60 % de los pacientes con dos maloclusiones presentaban disfunción grado II y el 66,7 % de los pacientes con tres maloclusiones, presentaban disfunción grado III. La mayor cantidad de pacientes tuvieron disfunción grado II (Moderada. Conclusiones: el mayor por ciento de los pacientes con disfunciones presentó una clase II molar y a medida que aumentó el número de maloclusiones aumentó también la severidad de la disfunción.

RadCon: A Radiological Consequences Model

International Nuclear Information System (INIS)

Crawford, J.; Domel, R.U.

2000-05-01

RadCon estimates the dose received by user selected groups in the population from an accidental release of radionuclides to the environment. The exposure pathways considered are external exposure from the cloud and ground and internal exposure from inhalation and ingestion of contaminated food. Atmospheric dispersion modelling is carried out externally to RadCon.Given a two dimensional time varying air and ground concentration of radioactive elements, RadCon allows the user to: view the air and ground concentration over the affected area, select optional parameters and calculate the dose to people,display the results to the user, and change the parameter values. RadCon offers two user interfaces: 1) the standard graphical user interface which is started using Java DoseApp at the command line, or by setting up a shortcut to this command (particularly when RadCon is installed on a PC) and 2) the text based interface used to generate information for the model inter-comparison exercise . This is initiated using Java BIOMASS at the command line, or an equivalent shortcut. The text based interface was developed for research purposes and is not generally available. Appendices A, B and C provide a summary of instructions on setting up RadCon. This will generally be carried out by the computer support personnel

Analisis del contenido de edulcorantes calóricos en bebidas no alcohólicas

OpenAIRE

Henning, María Florencia; García, Silvia; Malpeli, Agustina; Bisceglia, María Gabriela; Pellón Maisón, Magalí

2016-01-01

Según la Organización Mundial de la salud (OMS), la obesidad constituye la pandemia mundial del siglo XXI; aunque es una enfermedad multifactorial con un importante componente genético, la causa fundamental en la mayoría de los casos, obedece a un desbalance energético entre calorías consumidas y gastadas Los avances tecnológicos han permitido que se consiguen alimentos a menores precios, particularmente aquellos con alta densidad energética y alto grado de procesamiento. Uno de los productos...

Efecto del estrés calórico sobre la producción embrionaria en vacas superovuladas y la tasa de gestación en receptoras

Directory of Open Access Journals (Sweden)

Renato Raúl Lozano-Domínguez

2010-01-01

Full Text Available Los objetivos fueron determinar el efecto de interacción del estrés calórico de la época de producción del embrión y la de transferencia sobre la tasa de gestación de vacas receptoras, y evaluar si existe efecto del estrés calórico sobre la producción y calidad embrionaria en vacas superovuladas. Vacas lactantes de la raza Holstein fueron superovuladas en la época templada (n=20 y cálida (n=22. Los embriones fueron colectados, congelados y transferidos a vacas Holstein lactantes durante la época templada (n=54 y cálida (n=53. La respuesta superovulatoria (85.1 % y la tasa de fertilización (76.2 % fueron similares en ambas épocas (P>0.05. En la época templada, el número de óvulos y embriones (10.6, y embriones transferibles (7.4 colectados por vaca fueron superiores a los observados en la época cálida (6.1 y 4.4, respectivamente (P<0.05. La tasa de gestación de las vacas receptoras fue más alta durante la época templada cuando éstas recibieron un embrión producido en condiciones templadas (45.0 %, que en aquéllas que recibieron un embrión de época cálida (21.5 %, P<0.05. Independientemente de la época de producción del embrión, la tasa de gestación de las vacas receptoras fue menor durante la época cálida (13.9 % que en la templada (33.2 %, P<0.05. El estrés calórico compromete la producción embrionaria y la competencia del embrión para el establecimiento de la gestación, y se mostró un efecto materno durante la época cálida, que impacta negativamente la sobrevivencia del embrión después de la transferencia.

Multipactor Simulations of the SPL Power Coupler

CERN Document Server

Burt, A; Dexter, A C; Calaga, R; Montesinos, E; Author, F; Author, G

2010-01-01

Mul­ti­pactor is a lim­it­ing fac­tor in many RF power cou­plers. The SPL cou­pler is pro­posed to have a con­i­cal match­ing sec­tion be­tween the win­dow and the coax­i­al sec­tion how­ev­er this sec­tion must be checked for mul­ti­pactor. Mul­ti­pactor sim­u­la­tions of the cou­pler up to a few MW's of power were per­formed using a va­ri­ety of dif­fer­ent codes and the re­sults were com­pared. Sim­u­la­tions were per­formed in the con­i­cal and straight coax­i­al sec­tions.

Studies for the electro-magnetic calorimeter SplitCal for the SHiP experiment at CERN with shower direction reconstruction capability

Science.gov (United States)

Bonivento, Walter M.

2018-02-01

This paper describes the basic ideas and the first simulation results of a new electro-magnetic calorimeter concept, named SplitCal, aimed at optimising the measurement of photon direction in fixed-target experiment configuration, with high photon detection efficiency. This calorimeter was designed for the invariant mass reconstruction of axion-like particles decaying into two photons in the mass range 200 MeV to 1 GeV for the proposed proton beam dump experiment SHiP at CERN. Preliminary results indicate that angular resolutions better than obtained by past experiments can be achieved with this design. An implementation of this concept with real technologies is under study.

Estudio comparativo del efecto del cepillado con una crema dental con propóleos rojos y de un gel con clorofila

Directory of Open Access Journals (Sweden)

Estela Gispert Abreu

1998-12-01

Full Text Available Se analiza comparativamente el efecto de un gel dental de clorofila y de una crema dental con propóleos rojos sobre varios parámetros relacionados con la caries dental, en escolares que se cepillaron durante 21 días con dichos productos. Se obtuvieron resultados favorables principalmente en la disminución del grado de infección por Streptococcus mutans y la elevación de la capacidad individual de remineralización; salvo en este último no hubo diferencias estadísticamente significativas.Authors made a comparative analysis about effect of chlorophyl dental gel and toothpaste containing red propolis, on some parameters related to dental caries in a group of students that brushed their teeth during 21 days using such products. Favourable results were obtained, mainly in decrease of infection level from Streptococcus mutans, and in increase of individual capacity of remineralization; except for this latter, there weren´t statistically significant differences.

Tratamiento conservador en pacientes con retinoblastoma bilateral

Directory of Open Access Journals (Sweden)

Juan C. Suárez

2008-11-01

Full Text Available OBJETIVO: comparar el tratamiento convencional del retinoblastoma bilateral, usado hasta hace algunos años, consistente en radioterapia o enucleación bilateral, con el tratamiento conservador actual que incluye termoterapia transpupilar (TTT o TTT/quimioterapia al menos en un ojo, en niños con diagnóstico de retinoblastoma bilateral. DISEÑO: estudio retrospectivo descriptivo. MUESTRA: 20 pacientes con diagnóstico de retinoblastoma bilateral que consultaron al Hospital Universitario San Vicente de Paúl, de Medellín, Colombia, entre 1997 y 2007. MÉTODO: se hizo enucleación del ojo con el tumor de mayor tamaño. En el otro ojo se hizo tratamiento con TTT, con el láser diodo (810 nm, spot amplio, solo o combinado con otras terapias. RESULTADOS: se dividió a los pacientes en dos grupos: 16 pacientes (32 ojos en el grupo 1 tratados conservadoramente y 4 pacientes (8 ojos en el grupo 2 con tratamiento convencional. El rango de edad fue de 1-72 meses en el grupo 1 y de 1-12 meses en el grupo 2. El tiempo de seguimiento fue de 7-67 meses para el grupo 1 y de 13-73 meses para el grupo 2. En el grupo 1 se hizo enucleación de 16 ojos (50%, radioterapia externa de uno (3,1%, quimioterapia más termoterapia de 5 (15,6% y quimioterapia más termoterapia más crioterapia de 10 (31,3%. En todos los pacientes se logró preservar al menos un ojo. En el grupo 2, se enuclearon 7 ojos (87,5% y se hizo radioterapia externa más enucleación en un paciente (12.5%. Además, todos los pacientes recibieron quimioterapia. CONCLUSIÓN: la terapia conservadora actual consistente en tratamiento local (termoterapia, crioterapia o braquiterapia y quimiorreducción permite preservar al menos un ojo y en algunos casos de los dos, muchas veces con buena agudeza visual, en niños con retinoblastoma bilateral; se evitan así la enucleación bilateral y la radioterapia externa usada en el tratamiento convencional con todos sus efectos secundarios. La enucleación contin

Variables socionutricionales de hogares mazahuas integrados por preescolares desnutridos con madres con obesidad y sin obesidad

OpenAIRE

Viridiana Vanessa Conzuelo-González

2009-01-01

El primer objetivo fue conocer cuántos menores de cinco años con diferentes grados de desnutrición tienen una madre con sobrepeso/obesidad/ en una comunidad indígena que vive en extrema pobreza y bajo condiciones de migración masculina internacional. El segundo fue comparar tres variables socionutricionales (ingreso familiar, educación de la madre y adecuación nutrimental de la dieta diaria) entre estos hogares y los hogares con desnutrición infantil y madres sin obesidad. Se realizó un estud...

Terapia asistida con perros en niños con autismo revisión sistemática

OpenAIRE

Isaza Narváez, Ana Milena; Muñoz Chilito, Doumer Adrian

2013-01-01

Introducción: El autismo es un trastorno temprano y masivo del desarrollo en el cual se afecta la interacción social, el desarrollo del lenguaje, se presentan rituales y estereotipias. Hay evidencia que la interacción con un perro está asociada con efectos positivos en la salud del niño, lo cual se extiende al terreno terapéutico donde la compañía del perro estimula habilidades comunicativas para conectarse con el mundo exterior y romper el aislamiento que lo hace refractario a formas convenc...

Variables socionutricionales de hogares mazahuas integrados por preescolares desnutridos con madres con obesidad y sin obesidad

OpenAIRE

Viridiana Vanessa Conzuelo-González; Ivonne Vizcarra-Bordi

2009-01-01

El primer objetivo fue conocer cuántos menores de cinco años con diferentes grados de desnutrición tienen una madre con sobrepeso/obesidad/ en una comunidad indígena que vive en extrema pobreza y bajo condiciones de migración masculina internacional. El segundo fue comparar tres variables socionutricionales (ingreso familiar, educación de la madre y adecuación nutrimental de la dieta diaria) entre estos hogares y los hogares con desnutrición infantil y madres sin obesidad. Se realizó un est...

Efectos del contacto piel con piel del recién nacido con su madre

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Camila Lucchini Raies

Full Text Available Antecedentes: el contacto piel con piel ha sido una práctica ancestral en toda cultura, que debido a la institucionalización de la atención del parto, disminuyó en occidente. Se retomó en el marco de la atención humanizada del parto. Objetivo principal: determinar los efectos del contacto piel con piel del recién nacido con su madre. Metodología: revisión bibliográfica de 26 estudios. Límites de búsqueda: new borns, humans, clinical trials, de 10 años de publicación, en bases de datos: Pubmed, ProQuest, CINHAL, Lilacs. Resultados principales: Se observaron beneficios en las variables: duración de lactancia materna, comportamiento neurosensorial, regulación de temperatura, como alternativa al cuidado estándar, disminución en días hospitalización y niveles de cortisol, favorecedor de la interacción madre-hijo y desarrollo infantil. Conclusión principal: el contacto piel con piel brinda múltiples beneficios a recién nacidos. Se presenta como alternativa de cuidado segura, factible de implementar.

Los materiales alternativos estabilizados y su impacto ambiental

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Rubén Salvador Roux Gutierrez

2014-01-01

Full Text Available El presente trabajo es resultado de investigaciones desarrolladas a partir de la experimentación de materiales alternativos para la edificación, en especial, relacionado con Bloques de Tierra Comprimida (BTC, que han sido estabilizados con hidróxido de cal y cemento, buscando cumplir con las Normas Mexicanas, en el apartado referente a materiales para uso en mampostería de las edificaciones y así corroborar que estos materiales cumplen con requisitos de calidad, al igual que los materiales convencionales, aunado a la realización del análisis de ciclo de vida (ACV en dos poblaciones de BTC’s estabilizados con cementantes, buscando determinar su impacto ambiental y finalmente poder contrastarlos con las bases de datos existentes de materiales convencionales.

Larvicultura de Rhamdia quelen (Pisces, Pimelodidae con proteína vegetal y animal, suplementadas con plancton

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Germán Castañeda A.

2011-12-01

Full Text Available Objetivo. Determinar el efecto de dietas con diferentes proporciones de fuentes proteicas animales y vegetales suplementadas con plancton sobre el crecimiento y sobrevivencia en larvas de Rhamdia quelen. Materiales y métodos. Fueron formuladas dos dietas experimentales, dieta-1 con 70% de proteína de origen vegetal (torta de soya y dieta-2 con 70% de proteína proveniente de animales (corazón bovino yharina de pescado; se utilizaron cuatro protocolos de alimentación (cinco réplicas por tratamiento: dieta-1 + plancton filtrado en tamiz de 50-200 micras (T1, dieta-2 + plancton filtrado en tamiz de 50-200 micras (T2, dieta-1 (T3, dieta-2 (T4. Las larvas fueron manejadas a una densidad de 20 animales L-1 suministrando alimentohasta aparente saciedad diariamente a las 07:00, 11:00, 16:00 y 21:00 horas; la suplementación con plancton se realizó a las 11:00 y 21:00 horas. Resultados. Entre T1 y T2 no se observaron diferencias estadísticas (p>0.05 en peso final (21.89 ± 15.17mg vs 20.37 ± 10.37mg, longitud total (13.41±2.34mm vs 13.39±1.99 mm, factor de condición (K (0.80±0.13 vs 0.78±0.13 y sobrevivencia (46.6±2.68% vs36.0±7.41%; las diferencias entre T3 y T4 tampoco fueron significativas (3.35±1.40 mg vs 2.98±1.48 mg; 7.54±0.91mm vs 7.33±0.96mm; 0.75±0.13 vs 0.71±0.12; 33.6±9.07% vs 24.8±6.76%, respectivamente; hubo diferencias significativas (p<0.05 entre los grupos suplementados con plancton y los alimentados solo con ración. Conclusiones. La suplementación con plancton fue más efectiva que elofrecimiento solo de ración. La inclusión del 62.9% de torta de soya en la formulación (T1, aparentemente no afectó el crecimiento ni la sobrevivencia.

Ensayo clínico con intervención educativa en mujeres perimenopáusicas con un factor de riesgo cardiovascular

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Anxela Soto-Rodríguez

2017-01-01

Conclusiones: Una sencilla intervención educativa en mujeres perimenopáusicas con un factor de riesgo cardiovascular mejora aspectos relacionados con la calidad de vida y con hábitos saludables como la actividad física.

Soporte social con el uso de tic’s para cuidadores familiares de personas con enfermedad crónica

OpenAIRE

Carrillo, Gloria Mabel; Chaparro, Olivia Lorena; Barrera, Lucy; Sanchez, beatriz; Pinto, Raquel Natividad

2012-01-01

Objetivo Determinar la efectividad del soporte social dado con el uso de tecnologías de la información y la comunicación (TIC’S) a los cuidadores familiares de personas con enfermedad crónica.  Material y Métodos. Estudio descriptivo, exploratorio realizado en Bogotá en 2008 y 2009 con 144 cuidadores familiares de personas con enfermedad crónica  que constó de tres etapas para su desarrollo: 1. Planeación, diseño de la TIC’s,  aplicación de  prueba piloto y  selección de  población objeto;  ...

Adolescente femenino con granulomatosis de Wegener fulminante

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S C Scheffler-Mendoza

2017-01-01

Full Text Available Adolescente femenino de 13 años de edad, originaria de Guerrero, grupo étnico mixteco, padres analfabetos y con poco entendimiento del español. Sin otros antecedentes de importancia para el padecimiento. Inició un mes previo con la aparición de una pápula hipercrómica en párpado superior derecho que en los 10 días previos al ingreso aumentó de volumen generando proptosis. Al interrogatorio se negó dolor, lagrimeo, fiebre, o pérdida de peso. Ingresó con fiebre (39.0°C, palidez generalizada, proptosis derecha con exposición de córnea y conjuntiva, eritema periorbitario, movimientos oculares y agudeza visual disminuidos (i.e. contaba dedos a 1 m, pupila con tendencia a midriasis, hiperreactividad a la luz, y fondo de ojo con papila hiperémica edematosa y tortuosidad peripapilar. El resto de exploración no mostró datos relevantes. Se hospitalizó para iniciar tratamiento antimicrobiano parenteral de amplio espectro (i.e. ceftriaxona y vancomicina y abordar proptosis unilateral.

Síntomas depresivos en pacientes con Trastorno por déficit de atención con hiperactividad.

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Diego Artemio Reátegui Villegas

2008-07-01

Full Text Available Objetivos: Determinar la frecuencia de síntomas depresivos en pacientes con Trastorno por déficit de atención con hiperactividad (TDAH, así como determinar su asociación con edad, sexo y comorbilidad psiquiátrica. Material y Método: Se realizó un estudio descriptivo de corte transversal. Se incluyeron pacientes con diagnóstico de TDAH del Instituto Nacional de Salud Mental Honorio Delgado Hideyo Noguchi, desde febrero del 2006 hasta completar el tamaño de la muestra. Se les aplicó a los pacientes el Children´s depression inventory (CDI. Se consideró un punto de corte de 15 para definir presencia de trastorno depresivo. Se analizaron las siguientes variables: edad, sexo, comorbilidad psiquiátrica y sintomatología depresiva. Resultados: Sesenta y cuatro (85,3% fueron varones, en 35/75 (46,7% se encontró CDI ³ 15. No se encontró asociación estadísticamente significativa entre síntomas depresivos y sexo o edad. El síntoma depresivo más frecuente fue el problema del rendimiento escolar (65,3%. Se encontraron 6 pacientes con otra comorbilidad. Conclusión: Existe una alta frecuencia de sintomatología depresiva en niños y adolescentes con diagnóstico de TDAH. (Rev Med Hered 2008;19:96-101 .

Caracterización de pacientes con lesiones pigmentarias de piel con riesgo de transformación maligna

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María Elena Izquierdo Izquierdo

2015-06-01

Full Text Available Fundamento: el melanoma es el más terrible y mortífero de los cánceres de piel. Se origina frecuentemente a partir de un nevo melanocítico con riesgo de transformación maligna. Estas lesiones pigmentadas se diagnostican cada vez más en edades tan tempranas como la adolescencia. Objetivo: caracterizar los pacientes en edades pediátricas con signos de lesiones pigmentarias de la piel con riesgo de transformación maligna. Métodos: se realizó un estudio prospectivo de corte transversal en un grupo de 50 pacientes en edades entre 5 y 19 años, que asistieron a la consulta de dermatología del Hospital Pediátrico de Centro Habana en el año 2010, con signos de lesiones pigmentarias de la piel con riesgo de transformación maligna. Se aplicó un instrumento de recogida de datos, con previo consentimiento informado. Se utilizó la estadística descriptiva para el procesamiento de los datos. Resultados: en la población de estudio predominó la adolescencia temprana, el grupo de riesgo con daño actínico crónico y el fototipo III. Estuvo presente el antecedente familiar de cáncer de piel no-melanoma. La lesión más frecuente fue la de nevo melanocítico displásico. Además, se reportó un caso de carcinoma basal en paciente de fototipo II, perteneciente al grupo de riesgo de xeroderma pigmentoso. Conclusiones: se evidenció la transformación maligna de lesiones pigmentarias en piel de pacientes de grupos de riesgo.

disegnare con ... Alberto Pratelli

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Roberto Mingucci

2017-12-01

Full Text Available Con questa breve intervista ad Alberto Pratelli, (non a caso scelto per aprire questa nuova rubrica intendia-mo inaugurare un dialogo con personalità significati-ve del Disegno di Architettura, che consenta riflessioni dedicate alle sue varie dimensioni, oggi più che mai da approfondire. La suggestione a farlo, viene da un’idea di Pablo Rodri-guez Navarro ed abbiamo quindi pensato di avviarla proprio in questo numero, che Pablo ha accettato di curare su un tema a lui particolarmente caro.

Depresion en pacientes con alteraciones del tiroides

OpenAIRE

Radanovic-Grguric´, Ljiljana; Filakovic´, Pavo; Barkic´, Jelena; Mandic´, Nikola; Karner, Ivan; Smoje, Juraj

2003-01-01

Nuestro estudio fue realizado en un grupo de 53 mujeres con disfunción tiroidea y 28 mujeres con depresión mayor. Empleamos la Escala de la Depresión de Hamilton, la Escala de Autoevaluación de la Depresión de Zung y la Escala sobre la Impresión Clínica Global. Los resultados del estudio demuestran que la mayoría de los pacientes con disfunción tiroidea se mostraron clínicamente significativos en cuanto al trastorno depresivo. Los episodios depresivos son más frecuentes en pacientes con hipot...

Prevalencia de malnutrición en pacientes con discapacidad intelectual institucionalizados Prevalence of malnutrition in institutionalized intellectually disabled patients

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Rubén A. Bronberg

2011-02-01

Full Text Available Los pacientes con discapacidad intelectual (DI pueden presentar un riesgo elevado de padecer alteraciones nutricionales. Nuestro objetivo fue determinar la prevalencia de malnutrición en pacientes institucionalizados con DI, en la Colonia Nacional Montes de Oca, provincia de Buenos Aires, Argentina. Se realizó valoración antropométrica transversal mediante peso (kg y talla (cm en 614 individuos (352 varones y 262 mujeres. Se determinó IMC y la prevalencia de bajo peso, sobrepeso y obesidad por sexo y tipo de DI: leve, moderada y grave. Independientemente del sexo, las prevalencias de bajo peso, sobrepeso y obesidad fueron del 2.9%, 30% y 27.7% respectivamente. Sin considerar el grupo de DI, en mujeres se observó mayor prevalencia de obesidad (41.2% y en varones de sobrepeso (34.7%. Teniendo en cuenta el grado de DI e independientemente del sexo se observó mayor prevalencia de bajo peso en DI grave y de sobrepeso y obesidad en DI leve. Ninguno de los pacientes con DI leve presentó bajo peso. Teniendo en cuenta el sexo y el grupo de DI las mayores prevalencias de bajo peso y sobrepeso se hallaron en varones con DI leve, (7% y 38.4% respectivamente y de obesidad en mujeres con DI moderada (44%. Los resultados obtenidos indicarían la importancia del control del ingreso calórico y gasto energético de adultos con DI, prestando especial atención a las condiciones de vida y a los desordenes alimentarios en relación al grado de DI y a sus múltiples discapacidades asociadas.As patients with intellectual and developmental disability (ID may be more exposed to unfavorable factors, they are at higher risk of suffering nutritional alterations. Our objective was to determine prevalence of malnutrition in institutionalized patients with ID. An evaluation of the nutritional status through determination of transversal anthropometric parameters of weight (kg and height (cm was made on 614 individuals (352 men and 262 women institutionalized at

Enfermedad coronaria en pacientes con psoriasis

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Walter Masson

2013-10-01

Full Text Available Comunicaciones previas asociaron la psoriasis con la enfermedad coronaria. Desconocemos si en nuestro país o región existe dicha asociación. Se realizó un estudio transversal analizando los datos de la historia clínica electrónica de un sistema de salud de Buenos Aires. Analizamos todos los pacientes mayores de 18 años con diagnóstico de psoriasis entre el 1 de enero de 2003 y el 31 de julio de 2011 y los comparamos con un grupo control, en una relación 2:1, obtenido en forma aleatoria del mismo sistema de salud, apareados por edad y sexo. Determinamos la prevalencia de los factores de riesgo cardiovascular y de enfermedad coronaria. Analizamos la asociación entre la enfermedad coronaria y la psoriasis mediante análisis uni y multivariado. Se incluyeron 3 833 sujetos (1 286 pacientes con psoriasis y 2 547 controles. La prevalencia de hipertensión arterial (50% vs. 38%, p < 0.001, tabaquismo (25% vs. 17%, p < 0.001, diabetes (12% vs. 8%, p < 0.001 y enfermedad coronaria (4.98% vs. 3.06%, p = 0.003 fue mayor en los sujetos con psoriasis en comparación con el grupo control. Independientemente de la edad, la presencia de diabetes, hipertensión arterial o tabaquismo, hubo una asociación significativa entre la enfermedad coronaria y la psoriasis (OR 1.48, IC95% 1.04-2.11, p = 0.03. En conclusión, en esta población de Buenos Aires, los pacientes con psoriasis tuvieron una mayor prevalencia de diabetes, hipertensión arterial, tabaquismo y enfermedad coronaria. La asociación entre la psoriasis y la enfermedad coronaria fue independiente de los factores de riesgo explorados.

Mincle Signaling Promotes Con-A Hepatitis

Science.gov (United States)

Greco, Stephanie H.; Torres-Hernandez, Alejandro; Kalabin, Aleksandr; Whiteman, Clint; Rokosh, Rae; Ravirala, Sushma; Ochi, Atsuo; Gutierrez, Johana; Salyana, Muhammad Atif; Mani, Vishnu R.; Nagaraj, Savitha V.; Deutsch, Michael; Seifert, Lena; Daley, Donnele; Barilla, Rocky; Hundeyin, Mautin; Nikifrov, Yuriy; Tejada, Karla; Gelb, Bruce E.; Katz, Steven C.; Miller, George

2016-01-01

Concanavalin-A (Con-A) hepatitis is regarded as a T cell-mediated model of acute liver injury. Mincle is a C-type lectin receptor (CLR) that is critical in the immune response to mycobacteria and fungi, but does not have a well-defined role in pre-clinical models of non-pathogen mediated inflammation. Since Mincle can ligate the cell death ligand SAP130, we postulated that Mincle signaling drives intrahepatic inflammation and liver injury in Con-A hepatitis. Acute liver injury was assessed in the murine Con-A hepatitis model using C57BL/6, Mincle−/−, and Dectin-1−/− mice. The role of C/EBPβ and HIF-1α signaling was assessed using selective inhibitors. We found that Mincle was highly expressed in hepatic innate inflammatory cells and endothelial cells in both mice and humans. Furthermore, sterile Mincle ligands and Mincle signaling intermediates were increased in the murine liver in Con-A hepatitis. Most significantly, Mincle deletion or blockade protected against Con-A hepatitis whereas Mincle ligation exacerbated disease. Bone marrow chimeric and adoptive transfer experiments suggested that Mincle signaling in infiltrating myeloid cells dictates disease phenotype. Conversely, signaling via other CLRs did not alter disease course. Mechanistically, we found that Mincle blockade decreased the NF-κβ related signaling intermediates, C/EBPβ and HIF-1α, both of which are necessary in macrophage-mediated inflammatory responses. Accordingly, Mincle deletion lowered production of nitrites in Con-A hepatitis and inhibition of both C/EBPβ and HIF1-α reduced the severity of liver disease. Our work implicates a novel innate immune driver of Con-A hepatitis and, more broadly, suggests a potential role for Mincle in diseases governed by sterile inflammation. PMID:27559045

Mincle Signaling Promotes Con A Hepatitis.

Science.gov (United States)

Greco, Stephanie H; Torres-Hernandez, Alejandro; Kalabin, Aleksandr; Whiteman, Clint; Rokosh, Rae; Ravirala, Sushma; Ochi, Atsuo; Gutierrez, Johana; Salyana, Muhammad Atif; Mani, Vishnu R; Nagaraj, Savitha V; Deutsch, Michael; Seifert, Lena; Daley, Donnele; Barilla, Rocky; Hundeyin, Mautin; Nikifrov, Yuriy; Tejada, Karla; Gelb, Bruce E; Katz, Steven C; Miller, George

2016-10-01

Con A hepatitis is regarded as a T cell-mediated model of acute liver injury. Mincle is a C-type lectin receptor that is critical in the immune response to mycobacteria and fungi but does not have a well-defined role in preclinical models of non-pathogen-mediated inflammation. Because Mincle can ligate the cell death ligand SAP130, we postulated that Mincle signaling drives intrahepatic inflammation and liver injury in Con A hepatitis. Acute liver injury was assessed in the murine Con A hepatitis model using C57BL/6, Mincle(-/-), and Dectin-1(-/-) mice. The role of C/EBPβ and hypoxia-inducible factor-1α (HIF-1α) signaling was assessed using selective inhibitors. We found that Mincle was highly expressed in hepatic innate inflammatory cells and endothelial cells in both mice and humans. Furthermore, sterile Mincle ligands and Mincle signaling intermediates were increased in the murine liver in Con A hepatitis. Most significantly, Mincle deletion or blockade protected against Con A hepatitis, whereas Mincle ligation exacerbated disease. Bone marrow chimeric and adoptive transfer experiments suggested that Mincle signaling in infiltrating myeloid cells dictates disease phenotype. Conversely, signaling via other C-type lectin receptors did not alter disease course. Mechanistically, we found that Mincle blockade decreased the NF-κβ-related signaling intermediates C/EBPβ and HIF-1α, both of which are necessary in macrophage-mediated inflammatory responses. Accordingly, Mincle deletion lowered production of nitrites in Con A hepatitis and inhibition of both C/EBPβ and HIF-1α reduced the severity of liver disease. Our work implicates a novel innate immune driver of Con A hepatitis and, more broadly, suggests a potential role for Mincle in diseases governed by sterile inflammation. Copyright © 2016 by The American Association of Immunologists, Inc.

An IMPI-compliant control system for the ATLAS TileCal Phase II Upgrade PreProcessor module

CERN Document Server

Zuccarello, Pedro Diego; The ATLAS collaboration

2016-01-01

TileCal is the Tile hadronic calorimeter of the ATLAS experiment at the LHC. The LHC upgrade program, currently under development, will culminate in the High Luminosity LHC (HL-LHC), which is expected to increase about five times the LHC nominal instantaneous luminosity. The readout electronics of the Tile calorimenter being redesigned introducing a new read-out strategy in order to accommodate the detector to the new HL-LHC parameters. The data generated inside the detector at every bunch crossing will be transmitted to the PreProcessor (PPR) boards before any event selection is applied. The PPRs will be located at off-detector sites. The PPR will be responsible of providing preprocessed trigger information to the ATLAS first level of trigger (L1). In overall it will represent the interface between the data acquisition, trigger and control systems and the on-detector electronics. The PPR, being an important part of the readout system, needs to be remotely accessed and monitored to prevent failures or, in cas...

Multi-wavelength properties of two supersoft X-ray sources CAL83 and RXJ0513.9-6951

Science.gov (United States)

Rajoelimanana, A.; Meintjes, P.; Charles, P.

2017-10-01

Supersoft X-ray sources (SSS) are highly luminous (˜10^{38} erg s^{-1}), yet low temperature 10^{6} K sources, interpreted as a white dwarf (WD) accreting matter at a very high rate from its (heavy) companion, leading to Eddington-limited, steady hydrogen burning on the WD surface at T˜15-80 eV. A large fraction of this energy irradiates the surface of the disc, which gives rise to a reprocessed flux much larger than the intrinsic disc luminosity, accounting for the large optical and UV fluxes detected in SSS. We present the multi-wavelength properties of two prototypical LMC SSS, CAL83 and RXJ0513.9-6951, with particular emphasis on the anti-correlation between their X-ray and optical behaviour. Our SALT spectra show variable high excitation OVI emission as a function of optical brightness state, and which we link to the cyclic changes in the temperature and size of the WD, and hence the mass accretion rate.

Efecto de un tratamiento intensivo con insulina sobre la reactividad plaquetaria en pacientes con hiperglucemia que ingresan con un síndrome coronario agudo

OpenAIRE

Vivas Balcones, Luis David

2011-01-01

El objetivo primario de este trabajo ha sido la valoración del efecto que produce el control estricto de la glucemia mediante un tratamiento intensivo y precoz con insulina sobre la reactividad plaquetaria durante la fase hospitalaria en pacientes que ingresan en una unidad de cuidados intensivos cardiológicos con un síndrome coronario agudo e hiperglucemia, respecto a un tratamiento convencional.

Toughness increase of self compacting concrete reinforced with polypropylene short fibers

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Melián, G.

2010-12-01

Full Text Available Increases in bending tests by the addition of low volume fractions of Polypropylene (PP Short Fibers PP. These toughness increases are similar to those attained by Fiber Reinforced Concrete (FRC referred elsewhere as Engineered Cementitious Composites (ECC, having some ductility and strain hardening in direct tensile and flexural tests. Concretes mixtures were manufactured using natural pozzolanic blended Portland cement, volcanic crushed coarse aggregates and fine sand from Sahara desert dunes (0-1 mm from Canary Islands quarries and sand reservoirs, respectively, besides ordinary siliceous sand (0-4 mm and fly ash from an anthracite-coal heat generator.

Se presentan en este artículo hormigones autocompactables que, mediante la adición de pequeñas fracciones volumétricas de fibras cortas de polipropileno, consiguen incrementos importantes de tenacidad en su comportamiento mecánico a flexión. Estos aumentos de tenacidad son semejantes a los que presentan un grupo de hormigones reforzados con fibras, denominados ECC (Engineered Cementitious Composites, que muestran también alguna ductilidad y endurecimiento por deformación en ensayos de tracción directa y flexión. Los hormigones se dosificaron empleando cemento Pórtland con Puzolana natural, áridos volcánicos de machaqueo y arena fina procedente de dunas del desierto del Sáhara (0-1 mm, de canteras y depósitos de Las Palmas de Gran Canaria (Islas Canarias, respectivamente, además de arena silícea ordinaria (0-4 mm y cenizas volantes de una central térmica de combustible antracita.

INFLUENCIA DE LAS ESTRATEGIAS DE INGRESOS Y LAS POLITICAS PÚBLICAS SOBRE LA SEGURIDAD ALIMENTARIA EN COMUNIDADES RURALES MAYAS DEL NORTE DE CAMPECHE, MÉXICO

OpenAIRE

Lucio Pat Fernández; José Nahed Toral; Manuel Parra Vázquez; Luis García Barrios; Austreberta Nazar Beutelspacher; Eduardo Bello Baltazar

2010-01-01

En este artículo se examina el efecto de las estrategias de ingresos sobre la suficiencia de consumo calórico en grupos domésticos (GD) mayas de Campeche, México. El análisis se basó en el enfoque de modos de vida y la información se obtuvo de una encuesta censal de hogares (N=237) en cuatro comunidades. Los resultados revelan que todos los GD tienen una estrategia de ingreso diversificada con una orientación claramente definida. El índice de seguridad calórica es diferente entre co...

Hiperalgesia asociada al tratamiento con opioides

OpenAIRE

A. Gil Martín; M. Moreno García; J. Sánchez-Rubio Ferrández; T. Molina García

2014-01-01

La hiperalgesia inducida por opioides es una reacción paradójica caracterizada por una percepción intensificada de dolor relacionada con el uso de estos medicamentos en ausencia de progresión de la enfermedad o de síndrome de retirada. A diferencia de los casos de tolerancia, definida como pérdida de potencia analgésica durante el uso prolongado de opioides, no se produce mejoría con el escalado de dosis. La hiperalgesia inducida por opioides se ha manifestado en pacientes con dosis de manten...

Paciente con tumor de cuerpo carotideo

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Mariuska Forteza Sáez

Full Text Available Los tumores de cuerpo carotideo (paragangliomas son neoplasias altamente vascularizadas, muy poco frecuentes y generalmente benignas, originadas en los quimiorreceptores del cuerpo carotideo. Se presenta el caso de un paciente de 54 años, con aumento de volumen cervical derecho, asintomático, con estudio preoperatorio y angiografía realizados por tomografía axial computarizada, que resultan compatibles con tumor de cuerpo carotideo. Se realiza disección subadventicial, informando la biopsia paraganglioma. El tumor fue completamente resecado, sin evidencia de recurrencia y sin complicaciones.

Reseña: Sénécal, Gilles (director). L’espace-temps métropolitain: Forme et représentations de la région de Montréal

OpenAIRE

Jhon Williams Montoya

2014-01-01

Bajo la dirección de Gilles Sénécal, conocido investigador del INRS (Institut National de la Recherche Scientifique), este libro presenta quince artículos sobre la metropolización de Montreal, derivados de las actividades investigativas de científicos del Instituto, y en el que se incorporan los resultados de varios trabajos de posgrado.

Environmental behavior of soils and mixtures of soil-whitewash mud Comportamento ambiental de solos e misturas solo lama-de-cal

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Carlos Cardoso Machado

2004-06-01

Full Text Available The present study sought to observe the behavior of soils in natural state and in mixtures, in different ratios, with the industrial solid residue called whitewash mud. The work was conducted with samples of typical soils from the region of Alagoinhas, Bahia-Brazil. Wet chemical analysis and atomic absorption spectrophotometry were used in order to obtain the classification of the industrial solid residue. Solubilization and leaching tests were performed and X-ray diffraction and electron microscopy techniques were carried out. The results showed that the whitewash mud was classified as non-inert, but with great capacity of heavy metal retention largely owed to the kaolinite and goethite presence in the clay fraction of the soils, making it difficult to have heavy metals readily available for exchange.O presente estudo buscou observar o comportamento de solos em seu estado natural e em misturas, em diferentes teores, com o resíduo sólido industrial denominado lama-de-cal. A pesquisa foi conduzida com amostras de solos típicas da região de Alagoinhas, Bahia-Brasil. A análise química por via úmida e espectrofotometria de absorção atômica foram usadas para obter a classificação do resíduo sólido industrial. Testes de solubilização, lixiviação, analise de raios X e microscopia eletrônica de varredura foram executados. Os resultados indicaram que a lama-de-cal não é inerte, mas com grande capacidade de retenção de metais pesados, em grande parte devido à presença de caulinita e goethita na fração argila dos solos.

Consumo de oxígeno posejercicio después de un ejercicio continuo y otro interválico en tapiz rodante

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Alejandro Camps Olmedo

2011-06-01

Full Text Available El propósito de este estudio fue comparar el gasto calórico total (gasto en actividad + EPOC –excesivo consumo de oxígeno posejercicio– (n = 10 realizando 1 un ejercicio de carrera continua de 30 minutos al 65 % VO2màx y 2 un ejercicio de carrera a intervalos de 30 minutos, a razón de 15 tandas de un minuto de trabajo al 90 % del VO2màx, seguido de un minuto de descanso pasivo, realizado en bipedestación. Diez estudiantes de Ciencias del deporte (edad: 23 ± 2,8 años; peso: 70 ± 8,8 kg; altura: 175,7 ± 5,2 cm participaron en el estudio. Las pruebas del estudio se realizaron en tapiz rodante. Todos los sujetos realizaron ambas pruebas en días no consecutivos. La FC se registró continuamente durante el ejercicio. Los gases espirados fueron analizados con un analizador de gases estándar. Los resultados mostraron un trabajo total similar, no encontrándose diferencias significativas (CON: 358,60 ± 70,82 kJ, INT: 352,99 ± 63,56 kJ, el consumo calórico total fue mayor (P = 0,037 en interválico (398,5 ± 98,5 kcal que en continuo (343,2 ± 75,3 kcal, El consumo calórico en la recuperación fue mayor (P = 0,031 en interválico (85 ± 66,8 kcal que en continuo (43,5 ± 26,8 kcal. En conclusión, en este estudio se demuestra que el gasto calórico total es mayor en un ejercicio interválico de alta intensidad que en un ejercicio continuo de baja intensidad para tiempos y cargas de trabajo iguales. Además el gasto calórico en el ejercicio interválico es mayor tanto durante el ejercicio como durante la recuperación.

Electron microscopy investigation of the TiBAl and TiCAl grain refiner master alloys

International Nuclear Information System (INIS)

Cizek, P

2006-01-01

The present work brings a detailed statistical analysis of the microstructural characteristics and chemistry of the second phase particles present in the Al-5Ti-1B and Al- 3Ti-0.15C (wt.%) commercial grain refiner rods used in the Al casting industry. The investigation was performed using the TEM, EDS, STEM and HREM techniques. Both refiner rods contained large, blocky Al 3 Ti DO 22 particles. Borides present in the TiBAl rod, known to be main α-Al nucleation substrates, exhibited a facetted, hexagonal platelet morphology and largely represented a mixed (Ti,Al)B 2 phase, with Ti and Al contents changing continuously across the particle dimensions. There were two distinct families of small particles observed in the TiCAl rod. The coarser, facetted particles corresponded to cubic TiC crystal structure and these are believed to be major α-Al nucleation sites. The family of finer, round particles appeared to correspond to orthorhombic Al 6 Fe phase and their role in the nucleation process remains to be clarified. The results obtained may be used in optimising the grain refiner rod microstructures that would ensure improved refining performance during casting

Electron microscopy investigation of the TiBAl and TiCAl grain refiner master alloys

Energy Technology Data Exchange (ETDEWEB)

Cizek, P [IMMPETUS, Department of Engineering Materials, University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom)

2006-02-22

The present work brings a detailed statistical analysis of the microstructural characteristics and chemistry of the second phase particles present in the Al-5Ti-1B and Al- 3Ti-0.15C (wt.%) commercial grain refiner rods used in the Al casting industry. The investigation was performed using the TEM, EDS, STEM and HREM techniques. Both refiner rods contained large, blocky Al{sub 3}Ti DO{sub 22} particles. Borides present in the TiBAl rod, known to be main {alpha}-Al nucleation substrates, exhibited a facetted, hexagonal platelet morphology and largely represented a mixed (Ti,Al)B{sub 2} phase, with Ti and Al contents changing continuously across the particle dimensions. There were two distinct families of small particles observed in the TiCAl rod. The coarser, facetted particles corresponded to cubic TiC crystal structure and these are believed to be major {alpha}-Al nucleation sites. The family of finer, round particles appeared to correspond to orthorhombic Al{sub 6}Fe phase and their role in the nucleation process remains to be clarified. The results obtained may be used in optimising the grain refiner rod microstructures that would ensure improved refining performance during casting.

Mejora de la eficiencia energética de la producción de ladrillos de cerámica roja a partir del empleo como biocombustible de material lignocelulósico densificado lmproving energy efficiency on production of clay ceramic bricks using lignocellulosic-densified-material based biofuel

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Iván Machado L

2011-08-01

Full Text Available En el presente trabajo se exponen algunas experiencias en el propósito de obtener materiales de construcción como los ladrillos rojos cocidos a partir de una fuente energética alternativa proveniente de sustituir la madera o leña por residuos de material lignocelulósico sometidos al proceso de densificación con baja presión. El proceso de densificación con baja presión implica el empleo de algún tipo de aglomerante para lo cual en este trabajo se propone el uso del material arcilloso. Sobre esta base el objetivo principal de este estudio es evaluar el efecto que se produce en el consumo específico del biocombustible durante la fabricación artesanal de ladrillos al sustituir parcialmente la leña por la biomasa densificada. Se expone la relación entre algunas propiedades del biocombustible que permiten aumentar la relación ladrillos / kilogramo de combustible desde 1.1 a 1.4 lo que mejora la eficiencia del proceso de fabricación de ladrillos disminuyendo el consumo especifico con respecto al uso del combustible tradicional con la consiguiente mejora ambiental del proceso.This work presents some experiences in producing building materials, such as clay bricks, from an alternative energy source that replaces wood or firewood by waste lignocellulosic material submited to the process of densification under low pressure. The densification process at low pressure involves the use of a binder; this paper proposes the use of clay material as binder. The main objective of this study was to evaluate the effect in the consumption of biofuel during the production of handmade bricks, partially replacing wood by densified biomass. Some properties of the biofuel are identified to increase the bricks-to-fuel consumption ratio from 1.1 to 1.4. This improves the efficiency of the production process, reduces specific consumption regarding the use of traditional fuels with its consequent environmental improvement of the process.

Beneficios de la terapia con resistómetro inspiratorio en los pacientes con esclerosis multiple frente a terapias respiratorias convencionales

OpenAIRE

Martín Sánchez, Carlos

2016-01-01

[ES] La Universidad de Salamanca (USAL) a través del programa de Doctorado en Oncología Clínica realiza un estudio con ASPRODES, la Asociación Salmantina de Esclerosis Múltiple (ASDEM) y la Asociación Zamorana de Esclerosis Múltiple (AZDEM) para llevar a cabo un estudio experimental con el fin de analizar las ventajas que la terapia respiratoria con resistómetro inspiratorio puede aportar a los pacientes con Esclerosis Múltiple frente a las técnicas de fisioterapia respiratoria convencional. ...

Los adolescentes españoles y sus familias: Calidad en la comunicación con el padre y con la madre y conductas de riesgo relacionadas con el consumo de sustancias adictivas

OpenAIRE

Moreno Rodríguez, María del Carmen; Muñoz Tinoco, María Victoria; Pérez Moreno, Pedro Juan; Sánchez Queija, María Inmaculada

2006-01-01

Se presenta una reflexión acerca de cómo transcurren los años de la adolescencia en el contexto de la familia, analizando las transformaciones que se producen en las relaciones con los progenitores. El trabajo empírico se centra en una de las dimensiones que definen la calidad de las relaciones en el contexto familiar -la facilidad en la comunicación entre el adolescente y sus padres- y en su relación con algunas conductas de los adolescentes relacionadas con la salud, como es el caso del con...

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)

Studies for the electro-magnetic calorimeter {\\em SplitCal} for the SHiP experiment at CERN with shower direction reconstruction capability

CERN Document Server

2018-01-01

This paper describes the basic ideas and the first simulation results of a new electro-magnetic calorimeter concept, named {\\it SplitCal}, aimed at optimising the measurement of photon direction in fixed-target experiment configuration, with high photon detection efficiency. This calorimeter was designed for the invariant mass reconstruction of axion-like particles decaying into two photons in the mass range 200~MeV to 1~GeV for the proposed proton beam dump experiment SHiP at CERN. Preliminary results indicate that angular resolutions better than obtained by past experiments can be achieved with this design. An implementation of this concept with real technologies is under study.

Santiago, una ciudad con temor

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Enrique Oviedo S.

1999-04-01

Full Text Available El objetivo general de este artículo es evaluar los efectos de la inseguridad ciudadana en el uso del espacio público. Dicha evaluación exige analizar dos relaciones que se establecen en el ámbito de la violencia: la relación entre victimización y percepción de inseguridad; y la que se establece entre actitudes sociales y resolución pacífica de conflictos nacionales. Para ello, se analizaron las variables victimización, percepción de inseguridad, uso del espacio físico, actitudes hacia el sistema institucional político y social y hacia la resolución de conflictos nacionales, y las posibles relaciones entre ellas. Los datos para realizar el estudio se obtuvieron por medio de una encuesta que se llevó a cabo con 1 200 personas de 18 y 70 años de edad residentes en la ciudad de Santiago. Los resultados indican que Santiago es una ciudad de habitantes con temor y que el aumento de la percepción de inseguridad de sus habitantes contrasta con el hecho de que las tasas de victimización se hayan mantenido, más o menos, constantes en los años que precedieron a la encuesta. El temor se relaciona con el abandono del espacio público físico y sociopolítico, así como con el refugio en los espacios y la vida privados. La actitud de resolver los conflictos por medios no pacíficos es frecuente y se asocia en mayor medida con la inseguridad, la actitud negativa hacia la democracia y la falta de expectativas sobre el futuro del país. Los resultados de este estudio respaldan la idea de que para superar el temor la gente tiende a adaptarse a la realidad adoptando una postura conformista, homogeneizando las creencias y los comportamientos, y sobreestimando la fuerza como medio para resolver las diferencias.

Santiago, una ciudad con temor

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Oviedo S. Enrique

1999-01-01

Full Text Available El objetivo general de este artículo es evaluar los efectos de la inseguridad ciudadana en el uso del espacio público. Dicha evaluación exige analizar dos relaciones que se establecen en el ámbito de la violencia: la relación entre victimización y percepción de inseguridad; y la que se establece entre actitudes sociales y resolución pacífica de conflictos nacionales. Para ello, se analizaron las variables victimización, percepción de inseguridad, uso del espacio físico, actitudes hacia el sistema institucional político y social y hacia la resolución de conflictos nacionales, y las posibles relaciones entre ellas. Los datos para realizar el estudio se obtuvieron por medio de una encuesta que se llevó a cabo con 1 200 personas de 18 y 70 años de edad residentes en la ciudad de Santiago. Los resultados indican que Santiago es una ciudad de habitantes con temor y que el aumento de la percepción de inseguridad de sus habitantes contrasta con el hecho de que las tasas de victimización se hayan mantenido, más o menos, constantes en los años que precedieron a la encuesta. El temor se relaciona con el abandono del espacio público físico y sociopolítico, así como con el refugio en los espacios y la vida privados. La actitud de resolver los conflictos por medios no pacíficos es frecuente y se asocia en mayor medida con la inseguridad, la actitud negativa hacia la democracia y la falta de expectativas sobre el futuro del país. Los resultados de este estudio respaldan la idea de que para superar el temor la gente tiende a adaptarse a la realidad adoptando una postura conformista, homogeneizando las creencias y los comportamientos, y sobreestimando la fuerza como medio para resolver las diferencias.

Síndrome disejecutivo en personas con dependencia alcohólica con/sin recidivas

OpenAIRE

Fidalgo Martínez, Eva

2015-01-01

[ES]En la mayoría de las culturas el alcohol es el depresor del SNC utilizado con más frecuencia y el responsable de una morbilidad y una mortalidad considerables. En la actualidad, el consumo de bebidas alcohólicas constituye un importante problema de salud pública, especialmente en España, que es uno de los países con mayor consumo de alcohol por habitante y año. El objetivo general del estudio es determinar la existencia de diferencias significativas entre dos grupos clínicos de sujetos...

FORTIFICACIÓN DE PULPA DE UCHUVA CON CALCIO, OLIGOFRUCTOSA Y VITAMINA C, ESTABILIZADA CON HIDROCOLOIDE

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ALBA LUCIA DUQUE

2014-06-01

Full Text Available La pulpa de uchuva fortificada con calcio, oligofructosa y vitamina C es un alimento funcional con grandes beneficios para la salud. Para ello se le adicionó componentes biológicamente activos, como ácidos grasos, fibra alimentaria y antioxidantes. En este trabajo se estudió la estabilidad de la pulpa enriquecida en diferentes formulaciones, teniendo en cuenta los criterios de incorporación de calcio y vitamina C (20% del valor diario recomendado VDR y para la oligofructosa (fibra dietaría en relación 1:1 con el calcio. Los resultados obtenidos mostraron que la pulpa de uchuva fortificada con CMC, ologofructosa, calcio y vitamina C presentó en promedio una estabilidad de 87,7±10,0; una viscosidad de 22,8±7,9; una aw de 0,9863±0; pH de 3,3±0,1; acidez de 1,6±0,1; grados Brix de 13,3±0,7; una densidad de 1,32±0 g/mL y las mejores respuestas sensoriales en cuanto a color, aroma, fluidez y sabor.

Intervención psicomotriz en niños con trastorno por déficit de atención con hiperactividad

OpenAIRE

Herguedas Esteban, María del Carmen

2016-01-01

El trastorno por déficit de atención con hiperactividad (TDAH) es una de las principales causas de fracaso escolar. Los niños con este trastorno deben ser atendidos en una escuela inclusiva que permita responder a las necesidades de todos los alumnos. Se ha desarrollado un trabajo de investigación cuyos objetivos eran: evaluar las alteraciones psicomotoras de los niños con TDAH; elaborar un programa educativo de intervención psicomotriz para niños con TDAH; aplicar dicho programa en un gru...

Enfermedad periodontal en pacientes con discapacidad en custodia versus pacientes con discapacidad independientes

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Fermín-Guerrero-Del Ángel

2012-01-01

Full Text Available Objetivo: Identificar el estado de salud periodontal en pacientes con discapacidad en custodia versus pacientes independientes en su higiene oral. Material y métodos: Se examinaron pacientes con discapacidad, ambos sexos, 3 a 19 años que acuden al Servicio de Odontopediatría del Centro de Rehabilitación Infantil Teletón (CRIT Tamaulipas mediante revisión de cavidad oral y aplicación del Índice de Higiene Oral Simplificado (IHOS, Índice Periodontal Comunitario de la Necesidad de Tratamiento (IPCNT y entrevista con su cuidador primario. Se agruparon en dos categorías: Independientes y de Custodia. Resultados: En el total de la muestra la Media y Desviación estándar (D.E. de IPCNT fue de 0.89±0.54, así como el IHOS de 1.88±0.77. El IPCNT en pacientes con discapacidad de Custodia fue 0.91±0.57 e Independientes de 0.86±0.49 (p=0.70, IHOS en pacientes de Custodia 1.89±0.78 e Independientes 1.87±.0.74 (p=.93. IPCNT en géneros masculino 1.03±0.54 y femenino 0.75±0.51 (p=.009. IHOS en pacientes que habitan área rural 2.41±1.25 y área urbana 1.83±0.68 (p=.02. Relación entre la edad y la necesidad de tratamiento periodontal (p=0.001. Frecuencia del cepillado del grupo Independientes 2.03±0.56 y de Custodia 2.00±0.75 (p=.84. Conclusiones: No existe diferencia en el estado de salud periodontal y el grado de higiene oral entre pacientes con discapacidad Independientes y de Custodia. La mayoría de los pacientes Independientes y de Custodia tienen una necesidad de tratamiento de Instrucción de Higiene Oral (TN1 y tienen Higiene Oral Regular.

Demodicidosis en pacientes con rosácea

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Edhizon Trejo Mucha

2007-01-01

Full Text Available Objetivo: Determinar la frecuencia de demodicidosis y sus características clínicas en pacientes con rosácea. Materiales y métodos: Estudio de casos y controles en 42 pacientes con rosácea y 42 controles para describir la presencia y densidad de D. folliculorum. El estudio se realizó en el Hospital Nacional Cayetano Heredia entre marzo y setiembre del 2004, utilizándose la técnica de Tello. Resultados: Demodex folliculorum fue encontrado en los 42 pacientes con rosácea (100% y en 13 (31,0% del grupo control, (p= 0,000. La exposición a gatos, la crianza de roedores y cerdos, la seborrea y el uso de corticoides tópicos fueron mas frecuentes en los pacientes con rosácea. Conclusiones: La presencia de Demodex folliculorum fue más frecuente en los pacientes con rosácea. (Rev Med Hered 2007;18:15-21.

Materiales nanocumpuestos basados en LDPE relleno con nanotubos de carbono con potenciales propiedades bactericidas

OpenAIRE

Benigno Escribano, Erika

2015-01-01

En este trabajo, se ha seleccionado como material de estudio polietileno de baja densidad, LDPE, ya que es un polímero con múltiples aplicaciones en diversos campos. Se busca como objetivo principal, preparar y caracterizar nuevos materiales basados en LDPE con potenciales propiedades antibacterianas. Para ello, se van a estudiar dos posibles maneras de conseguirlo: La primera de ellas, consiste en realizar un procesado mecánico sobre el polietileno, concretamente, una molienda del alta en...

BIOMASA Y RENDIMIENTO DE FRIJOL CON POTENCIAL EJOTERO EN UNICULTIVO Y ASOCIADO CON GIRASOL

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J. Garduño-González

2009-01-01

Full Text Available El objetivo del presente estudio fue estimar la producción de biomasa, rendimiento y algunos de sus componentes de dos cultivares de frijol (Phaseolus vulgaris L. con potencial ejotero ('Acerado' y 'Criollo', en unicultivo y asociado con dos cultivares de girasol (Helianthus annuus L. ('Sunbright' y 'Victoria'. El estudio se realizó durante el ciclo primavera verano 2006 bajo condiciones de temporal en Tenancingo, Méx. Las variables evaluadas fueron: índice de área foliar (IAF, tasa de asimilación neta (TAN, biomasa total (BT, diámetro de vaina (DV, longitud de vaina (LV, número de vainas·m-2 (NV y rendimiento de vaina·m-2 (RV; las cuales fueron analizadas en arreglo factorial, bajo un diseño de bloques completos al azar con cuatro repeticiones. Para estimar el grado de asociación, entre las variables estudiadas y el rendimiento de vainas, se realizó un análisis de correlación lineal simple. En el factor cultivares se detectaron diferencias estadísticas significativas para la TAN y DV; para el factor sistemas de siembra hubo diferencias significativas para BT, DV, NV y RV. La interacción cultivares * sistema de siembra fue significativa en todas las variables, excepto en la TAN. En ese sentido, las asociaciones 'Criollo' + 'Sunbright', 'Acerado' + 'Victoria' y 'Acerado' en unicultivo, presentaron el mayor RV. Las variables IAF, BT y NV se correlacionaron positiva y significativamente con el rendimiento de vaina. Los resultados indican que 'Criollo' y 'Acerado', asociados con 'Sunbright' y 'Victoria', respectivamente, responden positivamente a la asociación, constituyendo una buena opción para los productores de la región de Tenancingo, México.

Tratamiento con trióxido de arsénico en pacientes con leucemia promielocítica aguda

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Lidia Clara Suárez Beyríes

2014-01-01

Full Text Available Se realizó un estudio observacional, descriptivo y transversal de 17 adultos con leucemia promielocítica aguda, atendidos en el Hospital General Docente "Dr. Juan Bruno Zayas Alfonso" de Santiago de Cuba durante un quinquenio, con vistas a evaluar la eficacia del tratamiento de inducción con trióxido de arsénico. En la casuística, la remisión hematológica completa se obtuvo en 82,4 % de sus integrantes a los 42,2 días como promedio. Predominaron la hepatotoxicidad y los dolores óseos como reacciones adversas más comunes, así como también las hemorragias severas como causa principal de muerte. Con este tratamiento se logró la incorporación laboral de quienes mejoraron totalmente y la sobrevida global hasta la fecha es de 76,4 %

Tratamiento de la tiroiditis de Riedel con triamcinolona

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Germán Brito Sosa

Full Text Available Se presenta el primer paciente con una tiroiditis de Riedel que se le aplica un tratamiento alternativo con triamcinolona creado por el profesor Juan Gualberto Vivó Núñez. Es el caso de una mujer de 48 años de edad, que acude al cuerpo de guardia por aumento de volumen de la región anterior del cuello y referir ligera disfagia. Tiene antecedente inicialmente de hipertiroidismo, a los 9 años comenzó con hipotiroidismo y hace aproximadamente un año se le diagnosticó una tiroiditis de Hashimoto, con seguimiento por endocrinología. La ecografía del tiroides muestra un aumento marcado de la glándula tiroidea y las imágenes de la biopsia por aspiración con aguja fina (BAAF son compatibles con una tiroiditis de Hashimoto. Con estos resultados se decide intervenirla quirúrgicamente eliminando así los signos compresivos. La biopsia postoperatoria describe una tiroiditis de Riedel. Por el gran tamaño de los lóbulos tiroideos, se le infiltra triamcinolona 1/2 cc en cada lóbulo, una vez al mes durante cuatro meses; logrando reducir aproximadamente el 50 % de los lóbulos tiroideos. Por lo que se puede apreciar los resultados obtenidos con el uso de la triamcinolona.

pacientes con falla cardiaca

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Diana Marcela Achury Saldaña

2007-01-01

Full Text Available Objetivo: determinar la adherencia al tratamiento de pacientes con falla cardiaca hospitalizados, al aplicar un plan educativo quefomenta el autocuidado.Método: estudio cuasiexperimental (entrevistas enfermera-paciente realizado entre diciembre de 2004 y mayo de 2006, con unamuestra de 50 pacientes seleccionados por conveniencia. Se diseñó un instrumento para evaluar los comportamientos de los pacientes,con base en algunos resultados de la adherencia y sus respectivos indicadores de la taxonomía NOC (Nursing out comes classification. Laadherencia al tratamiento fue medida en dos momentos: el primero durante la hospitalización, seguido de la aplicación del plan educativoantes del alta, que proporcionaba información en el manejo de su enfermedad desde una dimensión física, psicológica y social quepromueve el autocuidado; y el segundo un mes después del alta en su domicilio.Resultados: diferencias estadísticamente significativas (P=0,0001 que demuestran cómo mediante la capacitación al paciente enel manejo de su tratamiento farmacológico y no farmacológico, el establecimiento de una sana relación entre el profesional de enfermeríay el paciente, y la participación de la familia, se logra una total adherencia al tratamiento.Conclusiones: para lograr una adherencia total del paciente con falla cardiaca al tratamiento es necesario un proceso educativo y unseguimiento continuo y personalizado que motive permanentemente al paciente y se le reconozca el papel protagónico en su cuidado y manejo de la enfermedad.

EFECTO DE LA ADICIÓN DE AGUACATE A LA ALIMENTACIÓN HABITUAL SOBRE LOS NIVELES DE LÍPIDOS EN PERSONAS CON DISLIPIDEMIA

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Martha Díaz-Perilla

2004-12-01

Full Text Available El propósito fue determinar el efecto del consumo diario de aguacate, fuente de ácidos grasos monoinsaturados sobre los niveles de lípidos sanguíneos en personas con dislipidemia. La muestra estuvo conformada por 30 pacientes de la Clínica de los Andes de Tunja, entre los 30 y 65 años. Se evaluaron los datos antropométricos, la frecuencia de consumo de alimentos y el perfil lipídico. Se les suministró a los pacientes 250 g de aguacate al día por cuatro semanas. Se empleó la estadística descriptiva y la prueba T de hipótesis con un nivel de significancia p< 0.05. Durante las cuatro semanas el aumento de peso de los hombres fue de 2.7 K y de las mujeres de 2.3 K (p<0.05. El nivel de colesterol total disminuyó en 14% (p<0.05 y el de LDL en 16% (P<0.05; el valor de HDL aumentó en un 19% (P<0.05, y el de los TG en un 12% (p =0.037. El 27% de la muestra normalizó los niveles de CT, el 30% los de LDL, el 91% aumentó el nivel de HDL y el 20% aumentó los de TG. El índice de riesgo de presentar enfermedad cardiovascular (CT/ HDL disminuyó en 29%. Según el test de Framinghan, 4 pacientes presentan más de un 20% de riesgo a 10 años de presentar cardiopatía coronaria. Los resultados muestran que el aguacate como fuente de ácidos grasos monoinsaturados, puede ser utilizado dentro del plan de alimentación de pacientes con dislipidemia, incluyéndolo dentro del aporte energético para evitar así un aumento de peso por su alta densidad calórica. En conclusión, en la población estudiada se evidenció el efecto benéfico del consumo diario de aguacate en términos de disminución de los niveles de colesterol total y LDL yaumento de HDL, resultados que tienen implicaciones como medida preventiva de la enfermedad coronaria.

Coriocarcinoma con metástasis pulmonar

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Vicia Sánchez Abalos

2014-05-01

Full Text Available Se presenta el caso clínico de una fémina de 44 años de edad, con 32 semanas de embarazo, la cual fuera ingresada en la Unidad de Cuidados Intensivos del Hospital General Docente "Dr. Juan Bruno Zayas Alfonso" de Santiago de Cuba, por presentar insuficiencia respiratoria aguda como consecuencia de una sepsis. La paciente fue tratada con cefalosporina de tercera generación y ventilación mecánica no invasiva, pero se mantuvieron las características gasométricas de hipoxemia y una mala reacción terapéutica, por lo que se requirió instrumentación de las vías respiratorias y soporte hemodinámico, sin lograr regresión del cuadro clínico, lo cual condujo a un paro cardiorrespiratorio y, con ello, a la muerte. La necropsia mostró un coriocarcinoma del endometrio con metástasis pulmonar

Giochiamo con i robot

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Andrea Bonarini

2009-01-01

Full Text Available "Giochiamo con i robot" e' un laboratorio interattivo per grandi e piccini realizzato per l'edizione 2007 del Festival della Scienza di Genova. Lungo un percorso che va dalla telerobotica alla robotica evolutiva, il laboratorio sviluppa il tema di dare intelligenza ai robot. Questo percorso, le cui tappe sono le varie installazioni, si conclude nella "bottega" dove e' possibile costruire e programmare i propri robot o smontare e modificare quelli esposti durante il percorso didattico. I visitatori sono coinvolti in attivita' ludiche grazie alle quali possonoentrare in contatto con alcune delle idee potenti della robotica,

Intubación de paciente despierto con fibroscopio rígido bajo sedación con remifentanil

OpenAIRE

Bocanegra, Juan Carlos; Ríos Medina, Ángela María; Aguirre Ospina, Óscar David

2010-01-01

Introducción. Al elegir el manejo de un paciente con vía aérea difícil, conocida o sospechada, es importante plantearse alternativas de intervención. Varios algoritmos de manejo, recomiendan la intubación con paciente despierto, con laringoscopia directa o instrumentos ópticos. Los estiletes rígidos y semirrígidos son dispositivos ópticos desarrollados para el manejo de la vía aérea difícil, que han mostrado ser rápidos, atraumáti-cos y confiables. Objetivos. Describir el uso de diferentes es...

Tumor germinal mixto con componentes de disgerminoma y coriocarcinoma de ovario en mujer adolescente con ataxiatelangiectasia

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Eduardo Augusto Gálvez-Cuitiva

2015-11-01

días. Se suspendió la quimioterapia porque desarrolló choque séptico que puso en riesgo su vida. Por su enfermedad de base permaneció bajo vigilancia. Actualmente, 17 meses después, la paciente vive sin actividad tumoral.  Conclusión: existe asociación entre ataxia-telangiectasia, leucemia y linfomas. Se describe el caso clínico de una paciente con ataxia-telangiectasia y tumor germinal mixto con componente de disgerminoma y coriocarcinoma de ovario. Se propone establecer un tratamiento especial para estos pacientes inmunocomprometidos, con alto riesgo de cáncer pero, a la vez, de no tolerar los esquemas habituales.

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

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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.

Research about the pozzolanic activity of waste materials from calcined clay

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Sánchez de Rojas, M. I.

2001-03-01

Full Text Available To recycle and reutilise waste materials and find definite applications for their use, it is necessary to have a deep knowledge of them. The aim of this study is to study the possibility of using waste materials from calcined clay, actually ceramic tile, once crushed and grounded, as pozzolanic material. For this purpose, different tests are carried out in order to establish the pozzolanic activity of this material. At the same time, these results are compared to those of other industrial by-products, fly ash and silica fume, which are pozzolanic materials usually employed to elaborate mortars and concretes.

Para llevar a cabo labores encaminadas al reciclado y revalorización de residuos es necesario un conocimiento profundo de los mismos, de forma que se busquen aplicaciones concretas de uso. El objetivo de este estudio es investigar la posibilidad de utilizar materiales de desecho procedentes de arcilla cocida, concretamente teja cerámica, una vez triturada y molida, como puzolana. Para ello, se efectúan diferentes ensayos dirigidos a establecer la actividad puzolanica del material. A su vez, estos resultados son comparados con otros residuos industriales, ceniza volante y humo de sílice, habituales en la elaboración de morteros y hormigones.

Use of bottom ash from thermal power plant and lime as filler in bituminous mixtures

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López-López, E.

2015-06-01

Full Text Available This study focuses on the characterization of bottom ash (PCC-BA and determining the mechanical characteristics of hot mix asphalt (HMA using PCC-BA and hydrated lime (HL as filler. Physical and chemical characterization of the bottom ash was carried out to evaluate its eventual reutilization as filler substitute. The materials tested in this study were made using 0%, 25%, 50%, 70% and 100% of PCC-BA combined with HL. HMA mixes were evaluated in terms of their engineering properties, namely: air voids in the mixes, water sensitivity, stiffness modulus, performance in wheel tracking test and fatigue resistance. The results obtained indicate that HMA mixes with a filler blend of 70% PCC-BA and 30% HL fulfil European standards and are suitable for light traffic or small infrastructures.Este estudio se centra en la caracterización de las cenizas de fondo (PCC-BA y la determinación de las características mecánicas de mezclas bituminosas en caliente (HMA, utilizando cenizas de fondo y la cal hidratada (HL como filler. Se realizó la caracterización física y química de las cenizas de fondo para evaluar su empleo como sustituto de filler. Las mezclas ensayadas en este estudio se realizaron utilizando 0%, 25%, 50%, 70% y 100% de cenizas de fondo combinadas con cal hidratada. Se evaluaron propiedades ingenieriles de las mezclas bituminosas, tales como los huecos de aire en las mezclas, la sensibilidad al agua, el módulo de rigidez, el ensayo de pista y la resistencia a la fatiga. Los resultados obtenidos indican que las mezclas bituminosas fabricadas con una combinación de filler del 70% de cenizas de fondo y el 30% cal hidratada, cumplen con las normas europeas y son adecuados para su aplicación con tráficos ligeros o en pequeñas infraestructuras.

Gerenciando equipes de design interna e externa no processo de desenvolvimento de produtos: caso de duas empresas calçadistas do sul do Brasil.

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Andréa Capra

2012-12-01

Full Text Available Esse artigo trata da inserção do design no processo de desenvolvimento de produtos em duas empresas da indústria calçadista da região do Vale do Paranhana, no Rio Grande do Sul. Essas empresas podem trabalhar com diferentes tipos de equipes, interna, externa ou mista e, entender as vantagens e desvantagens de cada tipo de equipe é fundamental ao determinar a melhor opção para a empresa. Porém, pouco tem-se estudado buscando essa relação entre equipes de design e desenvolvimento de produtos. Nesse sentido, o objetivo do estudo foi analisar o gerenciamento de equipes de design, interna e externa, no processo de desenvolvimento de produtos de empresas da indústria calçadista. Para isso, um estudo de caso foi realizado através da análise do caso de uma empresa que trabalhava com os dois tipos de equipes. Com a realização desta pesquisa, foi possível estudar a forma de atuação e gerenciamento das equipes interna e externa de design no processo de desenvolvimento de produtos. Os resultados indicam que diferenças nas formas de atuação e gerenciamento de cada equipe estão relacionados com a autonomia decisória conferida para equipe no início do desenvolvimento de novos projetos.

Síndrome coronario agudo con supradesnivel del ST asociado al feocromocitoma con las catecolaminas inicialmente normales

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Jorge M. Pacheco

2016-01-01

Full Text Available Los feocromocitomas son tumores secretores de catecolaminas que cursan con paroxismos de hipertensión o hipotensión arterial y palpitaciones. Son una causa rara del síndrome coronario agudo. Presentamos el caso de una paciente con síndrome coronario agudo secundario a feocromocitoma que inicialmente tenía valores normales de catecolaminas.

Síndrome coronario agudo con supradesnivel del ST asociado al feocromocitoma con las catecolaminas inicialmente normales

OpenAIRE

Pacheco, Jorge M.; Pérez Baztarrica, Gabriel; Díaz Bozio, Fernando; Jiménez, Andrés; Porcile, Rafael

2016-01-01

Los feocromocitomas son tumores secretores de catecolaminas que cursan con paroxismos de hipertensión o hipotensión arterial y palpitaciones. Son una causa rara del síndrome coronario agudo. Presentamos el caso de una paciente con síndrome coronario agudo secundario a feocromocitoma que inicialmente tenía valores normales de catecolaminas.

O-PRECISION: UNA ALTERNATIVA METODOLÓGICA DE TRABAJO CON PERSONAS CON DISCAPACIDAD FÍSICA E INTELECTUAL

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Victoria Rey Niño

2015-04-01

Full Text Available La Clasificación Internacional del Funcionamiento, de la Discapacidad y de la Salud (CIF define la discapacidad como un término genérico que abarca deficiencias, limitaciones de la actividad y restricciones a la participación. En este caso hablamos de personas con discapacidad física e intelectual por parálisis cerebral, lo que significa que su acceso al mundo de la actividad física se encuentra en la mayoría de los casos muy restringido. Pero existe una modalidad de la orientación llamada Orientación de Precisión u O-Trail que, según la Federación Deportiva de Orientación (FEDO, ha sido adaptada para ofrecer a todos, independientemente de su sexo, edad, capacidad o discapacidad física, la oportunidad de participar en igualdad de condiciones en una típica competición de orientación. Como sugiere Arribas y Sánchez (1998: “En la actividad física podemos encontrar recursos y herramientas de intervención adecuadas a cada contexto y etapa de ciclo vital además, a través de su práctica pueden verse satisfechas determinadas necesidades e intereses personales y grupales, que pueden ser tratados desde un planteamiento educativo” . Este proyecto tiene la intención de ir más allá y pretende utilizar la Orientación de precisión como una herramienta para implementar una alternativa metodológica de trabajo a las actividades que se llevan a cabo con un colectivo de personas con discapacidad física e intelectual en la Asociación Cultural y rehabilitadora de Discapacitados Físicos de Palencia, desarrollando y estimulando sus aspectos intelectuales y sociales mediante una disciplina deportiva desconocida para ellos, con la intención de que aumente su motivación por participar.Objetivo: Implementar la O-Precisión como alternativa metodológica de trabajo con personas con discapacidad física e intelectual con el fin de desarrollar sus capacidades cognitivas y aumentar su autoestima.

Retinitis por citomegalovirus en un paciente con VIH

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Alena de los Ángeles Vejerano Duany

Full Text Available La retinitis por citomegalovirus es la infección ocular más frecuente en pacientes con un recuento de linfocitos CD4 inferior a 200 por µL. El aspecto oftalmoscópico de las lesiones se caracteriza, en la mayoría de los casos, por infiltrados retinianos resultados de la necrosis retiniana producida por citomegalovirus y el edema en asociación con hemorragias. Estas lesiones se disponen, por lo general, siguiendo las arcadas vasculares temporales con invasión hacia la mácula. Se presentó una paciente de 24 años de edad, femenina, blanca, ama de casa, con antecedentes patológicos personales oculares sin datos de interés, y antecedentes patológicos personales generales de ser diagnosticadas con VIH. Hace cuatro años que comenzó con tratamiento antirretroviral, y tuvo cambios de tratamiento en dos ocasiones. El último fue impuesto en mayo del año 2011, con el cual presentó mala adherencia terapéutica, y comenzó desde entonces a presentar disminución de su peso corporal de forma marcada en breve período de tiempo. Refiere que desde hace unos meses comenzó a presentar una disminución progresiva de la agudeza visual en el ojo derecho, acompañado de visión borrosa. Adquiere gran importancia este caso, ya que ante la supervivencia de los pacientes con sida, va a ser cada vez más frecuente la aparición de las afecciones oculares relacionadas con esta enfermedad. Dentro de ellas se encuentran las infecciones oportunistas mayores como la retinitis por citomegalovirus.

DIFFERENCES IN MORPHOLOGICAL AREA BETWE EN ATHLETS AND NON-ATLETS IN ELEMENTARY SCHOOLS

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Slobodan Stojiljković

2007-05-01

Full Text Available The goal of this re se arch is to de ter mi ne the dif fe ren ces in morp ho lo gi cal cha racte ri stics of pre-te e na ger spor tsmen and pu pils of the sa me age who are not in vol ved in any sports. The te sted par ti ci pants we re 200 pu pils at the age 13 ± 6 months. The gro up of pupils in vol ved in sports clubs con si sted of 100 pu pils and the gro up of pu pils not in vol ved in sport con si ted of 100 pu pils too. The as ses sment of the morp ho lo gi cal cha rac te ri stics was con duc ted using 12 va ria bles. The stu dent T-test sho wed that the re are sta ti sti cally sig ni fi cant dif fe ren ces bet ween the 2 gro ups of pu pils in fa vo ur of tho se in vol ved in sports clubs which is ex pla i ned by the tran sfor ma ti o nal pro ces of tra i ning.

Gastrectomía en manga laparoscópica para el tratamiento de la obesidad mórbida

OpenAIRE

Chacón V, Humberto; Salas R, Joanne; Benítez P, Gustavo; García R, Valentina; Arias L, Daniela

2009-01-01

La obesidad es el resultado de un desbalance entre la ingesta calórica y el gasto energético. La obesidad mórbida incluye pacientes con índice de masa corporal mayor a 35 con co-morbilidades asociadas o con índices mayores de 40 sin co-morbilidades. Estos pacientes no logran pérdidas del exceso de peso sostenido cuando lo intentan a través de tratamiento médico, por ello el tratamiento quirúrgico es la única opción que permite la pérdida de peso efectiva a largo plazo. La gastrectomía en mang...

Equinoterapia en niños con autismo

OpenAIRE

Martinez Alvernia, Carlos Francisco

2015-01-01

Introducción: Autismo es un trastorno del desarrollo caracterizado por compromiso en interacción social, habilidades de lenguaje, presentando rituales con estereotipias. Sin tratamientos curativos, actualmente se buscan terapias alternativas. Un incremento de la literatura científica de terapias asistidas con animales se ha evidenciado, demostrando mejoría en pacientes autistas con la equinoterapia. Objetivo: Realizar una revisión sistemática de la literatura para evaluar efectividad de la eq...

Plasma rico en plaquetas en pacientes con gonartrosis

OpenAIRE

Álvarez López, Alejandro; Ortega González, Carlos; García Lorenzo, Yenima; Arias Sifontes, Joanka; Ruiz de Villa Suárez, Abel

2013-01-01

Fundamento: la aplicación del plasma rico en plaquetas se ha convertido en una modalidad de tratamiento para pacientes con gonartrosis, tanto de forma aislada como en combinación con otros procedimientos. Objetivo: actualizar al personal médico sobre aspectos esenciales relacionados con la aplicación del plasma rico en plaquetas en pacientes con gonartrosis. Método: se realizó una revisión bibliográfica de un total de 300 artículos originales publicados en Pubmed, Hinari y Medline, mediante e...