خيارات البحث
النتائج 131 - 140 من 25,039
Water and small ruminant production A água e a produção de pequenos ruminantes النص الكامل
2010
Gherman Garcia Leal de Araújo | Tadeu Vinhas Voltolini | Mario Luiz Chizzotti | Silvia Helena Nogueira Turco | Francisco Fernando Ramos de Carvalho
Water is a nutrient of extreme importance for animals and must be considered vital in any rearing phase. The increasing scarcity of this precious natural resource has concerned different segments of society in order to find solutions for rational and sustainable use of this nutrient. Small ruminants, especially sheep and goats, have social and economic importance due to their great ability in adapting to adverse environmental conditions and using water efficiently. Thus, they might be a good alternative to mitigate the climate change effects and to generate foreign exchange and improving life condition in many places of the world. The concept of water productivity for livestock production is relatively new and there are few studies in the world, especially in Brazil. More researches and new technologies for water use in livestock production are indispensable.<br>A água é um nutriente extremamente importante na vida dos animais e deve ser considerada como vital em qualquer fase da criação. A escassez crescente deste precioso recurso natural tem provocado reações de diferentes segmentos da sociedade na busca de soluções de uso racional e sustentável deste nutriente. Os pequenos ruminantes, especialmente os ovinos e caprinos, são partes importantes da vida econômica e social de muitas nações pela sua ampla capacidade de adaptação às condições adversas do ambiente e boa eficiência no uso da água, podendo ser uma das boas alternativas de mitigação dos efeitos das mudanças climáticas, gerando divisas e melhoria das condições de vida em muitas regiões do mundo. O conceito de produtividade de água para a produção animal é relativamente novo e ainda são recentes e escassos os estudos existentes no mundo e em particular no Brasil. A realização de mais pesquisas e a geração de novas tecnologias de uso da água na produção animal, hoje mais do que nunca tornam-se imprescindíveis.
اظهر المزيد [+] اقل [-][Fertilization efficiency and water saving] | Eficiencia de la fertilización y ahorro de agua النص الكامل
2009
Anón.
[Alternatives of water supply for irrigation] | Alternativas de suministro de agua para riego
2006
Pardo Gómez, M.A.
Current drinking water standards | Estaǹdares del reglamento nacional primario de agua potable. English النص الكامل
2002
Presents "National Primary Drinking Water Regulations" and "National Secondary Drinking Water Regulations". Also offers access to other related sites and searchable of "Office of Water WWW pages."
اظهر المزيد [+] اقل [-][Administration of antibiotics by water] | Administración de los antibióticos a través del agua
2000
David, F.
La evolución de nuestros conocimientos sobre los antibióticos (noción de dosis y dependencia temporal, efecto post-antibiótico), y la aparición de numerosas especialidades solubles viene a reforzar nuestro interés por el tratamiento de los cerdos a través del agua del bebedero. Sin embargo, esta técnica plantea sus exigencias que no hay que olvidar en ningún caso (naturaleza del agua de explotación, fiabilidad del sistema de distribución, mantenimiento de los circuitos...)
اظهر المزيد [+] اقل [-][Water quality in swine farms] | La calidad del agua en las explotaciones porcinas
1998
Quiles, A. | Hevia, M.L. (Universidad de Murcia (Espana). Facultad de Veterinaria)
[Significance of water in porcine farms] | Importancia del agua en las explotaciones porcinas
1997
Quiles, A. | Hevia, M.L. (Universidad de Murcia (Espana). Facultad de Veterinaria)
Masas de agua en la plataforma continental | Water masses in the continental shelf النص الكامل
1997
Guerrero, R.A. | Piola, A.R.
The current knowledge on the argentine continental shelf water masses is summarized in this paper. These water masses are characterized as a function of water types fed by the boundary currents and the modifications due to continental runoff, and water energy exchange with the atmosphere. Based on sea surface salinity distributions and the temperature-salinity characteristics, three masses are described: coastal waters, mid-shelf waters and slope waters. The main freshwater sources found along the coast are identified, as well as high salinity formation areas. The vertical stratification, mainly controlled by temperature, is analyzed along the annual cycle. The stratification cycle is mainly driven by the heat exchange between the atmosphere and the ocean. Finally the oceanic fronts in the Argentine Sea are cited. | Bibligraphic reference/Referencia bibliográfica: Guerrero, R.A.; Piola, A.R. 1997. Masas de agua en la plataforma continental. En: Boschi, E.E.; ed. Antecedentes históricos de las exploraciones en el mar y las características ambientales. Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero INIDEP. (El Mar Argentino y sus Recursos Pesqueros, 1) p.107-118 | Published | hidrografía, plataforma continental, circulación de agua, estratificación, frentes oceánicos, masas de agua
اظهر المزيد [+] اقل [-]Determinación de nitratos en agua de mar | Determination of nitrate in sea water النص الكامل
1985
Mouriño, C. | Fraga, Fernando
16 páginas, 3 cuadros, 12 figuras | [EN] The substitution of the ammonium chloride used as buffered solution in the determination of nitrate in sea water by cadmium-copper reduction to nitrite has been studied in this work in order to prevent the problem of contamination when ammonia is simultaneously determined with nitrate. A system of continous variation has been used in order to determine the optimum proportion of citric acid-sodium citrate solution to replace adequately the ammonium chloride as buffer of the reduction. The proportion found is 55 H:245 Na. Some variations have been introduced in the diazotation reagent and the effect of column length on reduction has also been studied | [ES] El objeto de este trabajo es sustituir el CINH, utilizado en la determinación de nitratos como tampón para la reducción a nitritos en columna de3 cadmio, con el fin de evitar los problemas de contaminación que este reactivo puede introducir en la determinación simultánea del ion amonio y del nitrato. Se utiliza un sistema de variación continua para obtener las condiciones óptimas de la reacción y se encuentra que una mezcla de cítrico:citrato (55 H:145 Na) puede ser usado como substituto del CINH, para tamponar el sistema de reducción. Asimismo se introducen algunas variaciones en el reactivo de diazotación y se estudia la influencia de la longitud de la columna de reducción | Peer reviewed
اظهر المزيد [+] اقل [-]Política pública de tecnologías ahorradoras de agua | Public policy of water-saving technologies النص الكامل
2013
León Gutiérrez, Lady Carolina | Porras Díaz, Diana Carolina | Puerto Tovar, Lida Patricia | Romero Mora, Sindy Viviana | Ruíz Suárez, Erika Johana
La presente política pública establece los objetivos, metas, indicadores y líneas de acción estratégica para el ahorro y uso eficiente del agua en el sector doméstico de la ciudad de Bogotá, la política tiene una viabilidad para desarrollarse en un horizonte de 12 años, iniciando en el tiempo del gobierno Bogotá Humana, realizado por la alcaldía Mayor de Bogotá | This plan sets out the objectives, targets, indicators and strategic lines of action for the conservation and efficient use of water in the domestic sector of Bogotá city, the policy has a feasibility to be develop in a horizon of 12 years, starting during the government time Bogotá Humana, conducted by the mayor of Bogotá.
اظهر المزيد [+] اقل [-]