Refine search
Results 121-130 of 26,357
[Synthesis of environmental sustainability report: AGUA [Actions for Management and Use of Water] Programme] | Síntesis del informe de sostenibilidad ambiental: Programa AGUA [Actuaciones para la Gestión y Utilización del Agua]
Anón.
Economic instruments for water management | Instrumentos económicos para la gestión del agua Full text
2013
Echeverría, Jaime | Cantillo, Bernal
Problems related to water management in Costa Rica have an economic origin. Partly, as a consequence of a natural condition of water richness, as well as the concept of public service with fees that don´t promote neither investment nor efficiency of water resource use. Solutions must be targeted toward the economic conditions generating pollution, little efficiency, and lesser infiltration area. Water social cost regarding its use and pollution must be recognized and paid. The water user fee and pollution fee represent a step forward. A higher application of this kind of instruments will generate profit-benefit to the economy and might encourage the protection of the environment and natural resources. | Los problemas relacionados con la gestión del agua en Costa Rica tienen un origen económico. Parte se debe a una condición natural de riqueza hídrica, parte a un concepto de servicio público al costo con contención de las tarifas que no fomentan la inversión ni la eficiencia en el aprovechamiento. Las soluciones deben atacar las condiciones económicas que generan contaminación, poca eficiencia y menor área de infiltración. El costo social del uso y contaminación del agua debe ser reconocido y pagado. Los cánones de aprovechamiento y vertidos son un buen avance. Una mayor aplicación de este tipo de instrumentos generará beneficios a la economía y ayudará a salvaguardar el ambiente y los recursos naturales.
Show more [+] Less [-][Water, an urban development resource] | El agua, un recurso del desarrollo urbano
2003
Tura i Camafreita, M.
[Water and crops productivity] | El agua y la productividad de los cultivos
1998
Fereres Castiel, E. (Universidad de Cordoba (Espana). Escuela Tecnica Superior de Ingenieros Agronomos y de Montes)
Saving water with pressurized irrigation systems | [Ahorro de agua con riego presurizado]
1997
Thompson, Thomas L.
Instruccion sobre conservacion de suelos y agua | Teaching soil and water conservation
1967
[Water uptake in swine farms] | Consumo de agua en las explotaciones porcinas
Quiles, A. E-mail:[email protected] | Hevia, M.L.(Universidad de Murcia (España). Facultad de Veterinaria)
Revue: Gestion de l’eau souterraine et interaction eau souterraine/eau de surface dans le contexte de la politique sud-africaine de l′eau Revisión: Gestión de agua subterránea e interacción agua subterránea/agua superficial en el contexto de la política del agua de Sudáfrica Revisão: Gestão da água subterrânea e da interacção água subterrânea/água superficial no contexto da política Sul-Africana para a água | Review: Groundwater management and groundwater/surface-water interaction in the context of South African water policy Full text
2012
Levy, Jonathan | Xu, Yongxin
Groundwater/surface-water interaction is receiving increasing focus in Africa due to its importance to ecologic systems and sustainability. In South Africa’s 1998 National Water Act (NWA), water-use licenses, including groundwater, are granted only after defining the Reserve, the amount of water needed to supply basic human needs and preserve some ecological integrity. Accurate quantification of groundwater contributions to ecosystems for successful implementation of the NWA proves challenging; many of South Africa’s aquifers are in heterogeneous and anisotropic fractured-rock settings. This paper reviews the current conceptualizations and investigative approaches regarding groundwater/surface-water interactions in the context of South African policies. Some selected pitfall experiences are emphasized. The most common approach in South Africa is estimation of average annual fluxes at the scale of fourth-order catchments (∼500 km2) with baseflow separation techniques and then subtracting the groundwater discharge rate from the recharge rate. This approach might be a good start, but it ignores spatial and temporal variability, potentially missing local impacts associated with production-well placement. As South Africa’s NWA has already been emulated in many countries including Zambia, Zimbabwe and Kenya, the successes and failures of the South African experience dealing with the groundwater/surface-water interaction will be analyzed to guide future policy directions.
Show more [+] Less [-]Sanitizing effect of electrolyzed water on drinking water quality and milk hygiene | Efecto higienizante del agua electrolizada sobre el agua de bebida y la calidad higiénico sanitaria de la leche Full text
2011
Bartolomé, D., Instituto Tecnológico Agrario de Castilla y León, Valladolid (España) | Posado, R., Instituto Tecnológico Agrario de Castilla y León, Valladolid (España) | Rodríguez, L., Instituto Tecnológico Agrario de Castilla y León, Valladolid (España) | Bueno, F., Instituto Tecnológico Agrario de Castilla y León, Valladolid (España) | Olmedo, S., Instituto Tecnológico Agrario de Castilla y León, Valladolid (España) | García, J.J., Instituto Tecnológico Agrario de Castilla y León, Valladolid (España) | Martín Diana, A.B., Instituto Tecnológico Agrario de Castilla y León, Valladolid (España)
The electrolyzed water is a type of water with biocidal properties, fungicidal and sporicidal. Its effectiveness is caused by its activation which gives it a high oxidation capacity. Therefore, electrolyzed water becomes a very effective breaker of cell membrane of microorganisms. Although during its activation, hypochlorous acid is released, it is instantly stabilised, which guarantees the safety in handling and respect for the environment. The aim of this study was to determine the effect of electrolyzed water as drinking water on the presence of bacteria in the water consumed by cows and the microbiological quality of milk produced. Water samples collected from drinking electrolyzed water showed negative results for contamination by aerobic, total coliforms, E. coli and faecal streptococci. Data showed a significant decrease of somatic cell count, total bacteriology and coagulase positive count in milk from cows that had drunk electrolyzed water.
Show more [+] Less [-]Integrated management of water resources in urban water system: Water Sensitive Urban Development as a strategic approach | Gestión integrada de los recursos hídricos en el sistema agua urbana: Desarrollo Urbano Sensible al Agua como enfoque estratégico. Full text
2014
Suárez López, Joaquín | Puertas, Jerónimo | Anta, José | Jácome, Alfredo | Álvarez-Campana, José Manuel
The urban environment has to be concerned with the integrated water resources management, which necessarily includes the concept of basin unity and governance. The traditional urban water cycle framework, which includes water supply, sewerage and wastewater treatment services, is being replaced by a holistic and systemic concept, where water is associated with urbanism and sustainability policies. This global point of view cannot be ignored as new regulations demand systemic and environmental approaches to the administrations, for instance, in the management of urban drainage and sewerage systems. The practical expression of this whole cluster interactions is beginning to take shape in several countries, with the definition of Low Impact Development and Water Sensitivity Urban Design concepts. Intends to integrate this new strategic approach under the name: “Water Sensitive Urban Development” (WSUD). With WSUD approach, the current urban water systems (originally conceived under the traditional concept of urban water cycle) can be transformed, conceptual and physically, for an integrated management of the urban water system in new models of sustainable urban development. A WSUD implementing new approach to the management of pollution associated with stormwater in the urban water system is also presented, including advances in environmental regulations and incorporation of several techniques in Spain. | El medio urbano no es ajeno a la de gestión integrada del recurso hídrico, que incluye, necesariamente, el concepto de unidad de cuenca y de gobernanza. El tradicional concepto de ciclo del agua urbana, que incluye de un modo muy lineal los servicios de abastecimiento y saneamiento, debe ser sustituido por una visión más integral y sistémica, donde el agua se vincula con el planeamiento y el desarrollo urbano y con las políticas de sostenibilidad. Se puede hablar de sistema de agua urbana. Esta globalidad de acción no es algo de lo que podamos sustraernos, ya que la legislación cada vez más orienta a las administraciones a considerar aspectos sistémicos y ambientales a la hora de gestionar, por ejemplo, los sistemas de saneamiento y drenaje. La plasmación práctica de todo este conglomerado de interacciones ya toma forma en algunos países, en los que se comienza a hablar de “Low Impact Development” (LID) o “Water Sensitivity Urban Design” (WSUD). Se propone integrar este nuevo enfoque estratégico bajo la denominación: Desarrollo Urbano Sensible al Agua (DUSA). Con el impulso del enfoque DUSA, los actuales sistemas de agua urbana (concebidos originalmente bajo el concepto tradicional de ciclo de agua urbana) pueden transformarse, conceptual y físicamente, para una gestión integrada del sistema del agua urbana en los nuevos modelos de desarrollo urbanos sostenible. Asimismo se presenta la aplicación del nuevo enfoque DUSA a la gestión de la contaminación asociada a las aguas pluviales en el sistema de agua urbana, incluyendo los avances en normativa e incorporación de técnicas en España.
Show more [+] Less [-]