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Search Results: 1 - 10 of 144183 matches for " B. Parras "
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Public Talks and Science Listens: A Community-Based Participatory Approach to Characterizing Environmental Health Risk Perceptions and Assessing Recovery needs in the Wake of Hurricanes Katrina and Rita
J. Sullivan,B. Parras,R. St. Marie,W. Subra
Environmental Health Insights , 2009,
Abstract:
Public Talks and Science Listens: A Community-Based Participatory Approach to Characterizing Environmental Health Risk Perceptions and Assessing Recovery needs in the Wake of Hurricanes Katrina and Rita
J. Sullivan,B. Parras,R. St. Marie,W. Subra
Environmental Health Insights , 2009,
Abstract: In response to the human health threats stemming from Hurricanes Katrina and Rita, inter-disciplinary working groups representing P30-funded Centers of the National Institute Environmental Health Sciences were created to assess threats posed by mold, harmful alga blooms, chemical toxicants, and various infectious agents at selected sites throughout the hurricane impact zone. Because of proximity to impacted areas, UTMB NIEHS Center in Environmental Toxicology was charged with coordinating direct community outreach efforts, primarily in south Louisiana. In early October 2005, UTMB/NIEHS Center Community Outreach and Education Core, in collaboration with outreach counterparts at The University of Texas MD Anderson Cancer Center @ Smithville TX/Center for Research in Environmental Disease sent two groups into southern Louisiana. One group used Lafourche Parish as a base to deliver humanitarian aid and assess local needs for additional supplies during local recovery/reclamation. A second group, ranging through New Iberia, New Orleans, Chalmette, rural Terrebonne, Lafourche and Jefferson Parishes and Baton Rouge met with community environmental leaders, emergency personnel and local citizens to 1) sample public risk perceptions, 2) evaluate the scope and reach of ongoing risk communication efforts, and 3) determine how the NIEHS could best collaborate with local groups in environmental health research and local capacity building efforts. This scoping survey identified specific information gaps limiting efficacy of risk communication, produced a community “wish list” of potential collaborative research projects. The project provided useful heuristics for disaster response and management planning and a platform for future collaborative efforts in environmental health assessment and risk communication with local advocacy groups in south Terrebonne-Lafourche parishes.
Métodos alternativos de optimización de la geometría de estructuras articuladas
Parras, Luis
Informes de la Construccion , 1983,
Abstract:
"Poetic Prose and Imperialism: The Ideology of Form in Joseph Conrad's Heart of Darkness"
John Parras.
Nebula , 2006,
Abstract:
Suicidio, cuarta causa de muerte en Cárdenas
Trenzado Rodríguez,Norma B; Parras Trenzado,Elizabeth; Feliú López,Teresa;
Revista Cubana de Higiene y Epidemiolog?-a , 2001,
Abstract: a descriptive and retrospective study of 45 cases notified by suicide in cárdenas municipality in 1998 and 1999 was conducted. the cards of compulsory declaration were reviewed to know the health area, age, sex, method used and address in order to visit the relatives of the deceased and to do a previously designed survey. suicide was the fourth cause of death in both years with rates of 33.8 and 24.l x 100 000 inhabitants, respectively. some riks factors that were associated with suicide and the methods used to commit it were described.
Impacts of land use change in soil carbon and nitrogen in a Mediterranean agricultural area (Southern Spain)
L. Parras-Alcántara,M. Martín-Carrillo,B. Lozano-García
Solid Earth (SE) & Discussions (SED) , 2013, DOI: 10.5194/se-4-167-2013
Abstract: The agricultural Mediterranean areas are dedicated to arable crops (AC), but in the last decades, a significant number of AC has led to a land use change (LUC) to olive grove (OG) and vineyards (V). A field study was conducted to determine the long-term effects (46 years) of LUC (AC by OG and V) and to determine soil organic carbon (SOC), total nitrogen (TN), C : N ratio and their stratification across the soil entire profile, in Montilla-Moriles denomination of origin (D.O.), in Calcic-Chromic Luvisols (LVcc/cr), an area under semiarid Mediterranean conditions. The experimental design consisted of studying the LUC on one farm between 1965 and 2011. Originally, only AC was farmed in 1965, but OG and V were farmed up to now (2011). This LUC principally affected the horizon thickness, texture, bulk density, pH, organic matter, organic carbon, total nitrogen and C : N ratio. The LUC had a negative impact in the soil, affecting the SOC and TN stocks. The conversion from AC to V and OG involved the loss of the SOC stock (52.7% and 64.9% to V and OG respectively) and the loss of the TN stock (42.6% and 38.1% to V and OG respectively). With respect to the stratification ratios (SRs), the effects were opposite; 46 years after LUC increased the SRs (in V and OG) of SOC, TN and C : N ratio.
Suicidio, cuarta causa de muerte en Cárdenas
Norma B Trenzado Rodríguez,Elizabeth Parras Trenzado,Teresa Feliú López
Revista Cubana de Higiene y Epidemiología , 2001,
Abstract: Se realizó un estudio descriptivo-retrospectivo de 45 casos notificados por suicidio en el municipio de Cárdenas los a os 1998 y 1999. Se revisaron las Tarjetas de Declaración Obligatoria (EDO) para investigar el área de salud, la edad, sexo, método empleado y dirección para visitar a los familiares y aplicarles una encuesta dise ada previamente. El suicidio ocupó la cuarta causa de muerte en ambos a os estudiados con tasas de 33,8 y 24,1 × 100 000 hab. respectivamente. Se describieron algunos factores de riesgo que se encontraron asociados al suicidio y los métodos empleados para consumar el hecho. A descriptive and retrospective study of 45 cases notified by suicide in Cárdenas municipality in 1998 and 1999 was conducted. The Cards of Compulsory Declaration were reviewed to know the health area, age, sex, method used and address in order to visit the relatives of the deceased and to do a previously designed survey. Suicide was the fourth cause of death in both years with rates of 33.8 and 24.l x 100 000 inhabitants, respectively. Some riks factors that were associated with suicide and the methods used to commit it were described.
Darwin's great patagoniantertiary formation at the mouth of the río Santa Cruz: a reappraisal La Gran Formación Terciaria Patagónica de Darwin enla desembocadura del río Santa Cruz: una revaluación
Ana Parras,Miguel Griffin
Revista de la Asociación Geológica Argentina , 2009,
Abstract: Theclassical section described by Darwin at the mouth of the Río Santa Cruz was alandmark in the later stratigraphy of the marine Cenozoic of Patagonia.Sedimentological and paleontological studies of rocks from the Monte LeónFormation at the Darwin and Mount Entrance sections - mouth of the Río SantaCruz - suggest that they were deposited in an early Miocene inner shelf tosubtidal - or even intertidal at the top - environment. The base of thesections is covered and the top is unconformably overlain by Quaternarydeposits. The invertebrate fauna (mainly mollusks) mentioned herein - theearliest of which were collected by Darwin and described by Sowerby - werecollected from the two sections with a detailed stratigraphic control. Itincludes brachiopods, echinoderms, scaphopods, bivalves, and gastropods. Thesimilarity of this fauna with that one from the sections at Restinga Norte,Cabeza de León, Las Cuevas, Yegua Quemada and Monte Observación, all south ofthe study area, allow correlation with them. In addition to the equivalence ofthe faunas, sedimentological features at all these localities are also thesame. Therefore, all the shell beds involved should be referred to the PuntaEntrada Member of the Monte León Formation. The Monte Observación Member shouldbe restricted to its original use and included as a member at the base of theoverlying Santa Cruz Formation, outcrops at Cerro Monte León and CerroObservación. La sección clásica descripta por Darwin en la desembocaduradel río Santa Cruz fue un hito en el posterior desarrollo de la estratigrafíadel Cenozoico marino de Patagonia. Los estudios sedimentológicos ypaleontológicos realizados en sedimentitas de la Formación Monte León, en las secciones Darwin y Monte Entrada, en el área de la desembocaduradel río Santa Cruz, sugieren que las mismas fueron depositadas en un ambientede plataforma interna a submareal en la base, hasta intermareal en el techo,durante el Mioceno temprano. La base de las secciones se encuentra cubierta y sutecho es cortado en forma discordante por depósitos del Cuaternario. La faunade invertebrados (mayormente moluscos) mencionada en este trabajo, cuyosprimeros representantes fueran coleccionados por Darwin y descriptos porSowerby, fue colectada con un detallado control estratigráfico a lo largo delas dos secciones. La misma incluye braquiópodos, equinodermos, escafópodos,bivalvos y gasterópodos. La similitud en la composición taxonómica, como asítambién en las características sedimentológicas, entre estas secciones yaquellas ubicadas más al sur como son Restinga Norte, Cabeza de León,
Situación del sida en Espa a: presente y perspectivas futuras
Parras Vázquez Francisco
Revista Espa?ola de Salud Pública , 1997,
Abstract:
Análisis de estructuras planas canónicas mediante ordenadores de peque a capacidad de memoria
Parras Galán, Luis
Informes de la Construccion , 1984,
Abstract: In this study a method is developed which will enable canonical flat structures containing numerous elements to be analyzed, using computers with a small capacity of central memory and without the necessity of a peripheral memory. The field of application for these structures is in jointed beams (Warren, Pratt types, etc.), roof frames, canopies, etc., which are those most widely used in the world of a rural and industrial engineering. Consider, for example, the different agricultural instalattions in which these structures are used, such as warehouses for storing machinery, the storage of agricultural products, industrial and cattle-raising installations, etc. En el presente trabajo se desarrolla un método que permite el análisis de estructuras planas canónicas de gran número de elementos, con ordenadores de peque a capacidad de memoria central y sin requerimiento de memoria periférica. Dichas estructuras tienen su campo de aplicación en vigas articuladas (tipo Warren, Pratt, etc.), cerchas, marquesinas, etc., que son las que con mayor profusión se utilizan en el mundo de la ingeniería rural e industrial. Piénsese, por ejemplo, en las distintas instalaciones agrícolas en las que se utilizan dichas estructuras como son las naves para el resguardo de maquinaria, almacenamiento de productos agrarios, instalaciones industriales, ganaderas, etc.
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