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| Registros recuperados: 237 | |
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| Leite, Gil Bracarense; Maciel, Marilia Fernandes; Santos, Maurinho Luiz dos. |
| Este trabalho objetivou analisar as mudanças ocorridas na despesa com água e esgoto, em resposta à alteração na renda das famílias nas regiões Norte, Nordeste, Centro-Oeste, Sudeste e Sul. Para isso, estimou-se a elasticidade-renda da despesa por meio de um modelo econométrico que consiste em ajustar uma poligonal com três segmentos, com vistas em mostrar como a despesa com água e esgoto varia em decorrência de uma alteração no recebimento familiar. Os dados foram extraídos da Pesquisa de Orçamento Familiar de 2002/2003, realizada pelo IBGE. Os valores encontrados para elasticidade-renda situaram-se entre 0 e 1, o que indica que a água pode ser considerada um bem normal nas regiões analisadas e no Brasil, onde o valor encontrado foi de 0,4263. As... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Água; Elasticidade-renda; Regiões brasileiras; Water; Elasticity-income; Brazilian regions; Consumer/Household Economics. |
| Ano: 2008 |
URL: http://purl.umn.edu/108072 |
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| Feuillette, Sarah; Levrel, Harold; Blanquart, Stéphanie; Gorin, Olivier; Monaco, Guillaume; Penisson, Bruno; Robichon, Stéphane. |
| In the context of the Water Framework Directive, the French Water Agencies were asked to justify exemptions, for disproportionate cost reasons, to the “good water” status in a series of river basins in 2015. The ministry of the Environment and the economists of the Water Agencies agreed on the fact that this justification would be based on cost-benefit analyses. A great number of cost-benefit analyses were carried out on water bodies or groups of water bodies. This article reports on this experience conducted by the French Water Agencies. It highlights the fact that the large majority of restoration projects generated higher costs than benefits. It suggests that the implementation of the Water Framework Directive could be considerably limited by the use of... |
| Tipo: Text |
Palavras-chave: Environnement; Dispositifs institutionnels; Eau; Évaluation économique; Coûts disproportionnés; Environment; Institutional systems; Water; Economic valuation; Disproportionate costs. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00480/59158/61787.pdf |
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| King, B.A.; Shellie, Krista. |
| Mild to moderate water stress is desirable in wine grape for controlling vine vigor and optimizing fruit yield and quality, but precision irrigation management is hindered by the lack of a reliable method to easily quantify and monitor vine water status. The crop water stress index (CWSI) that effectively monitors plant water status has not been widely adopted in wine grape because of the need to measure well-watered and non-transpiring leaf temperature under identical environmental conditions. In this study, a daily CWSI for the wine grape cultivar Syrah was calculated by estimating well-watered leaf temperature with an artificial neural network (NN) model and non-transpiring leaf temperature based on the cumulative probability of the measured difference... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Irrigation control; Water. |
| Ano: 2014 |
URL: http://eprints.nwisrl.ars.usda.gov/1582/1/1538.pdf |
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| Beloti,Vanerli; Souza,Juliana Aparecida de; Barros,Márcia de Aguiar Ferreira; Nero,Luís Augusto; Mattos,Marcos Rodrigues de; Gusmão,Viviane Vieira; Moraes,Luciane Bilia de. |
| Petrifilm EC and HS were compared to the MPN method to determine their efficacy to enumerate total coliforms and E. coli in 145 samples of water (76 water in natura, 69 drinking water). For water in natura, Petrifilm HS and EC showed good correlation with MPN method. In chlorinated water (< 20 col/100 mL and negatives) the agreement was low. For E.coli enumeration, Petrifilm EC showed a good correlation with MPN method. The results indicated that Petrifilm EC and HS are accurate to enumerate coliforms and E. coli in water when the expected counts are higher than 20/100 mL. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Water; Coliforms; Escherichia coli; Petrifilm. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000400002 |
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| Bertoni, R. |
| The radiochemical methods proposed for evaluating heterotrophic activity in waters have been severely criticized in recent years because they are not considered to be sufficiently realistic. Thus, the possibility of directly measuring the heterotrophic consumption of naturally occurring Organic Carbon (OC) in fresh water samples incubated under controlled conditions has been evaluated. The analytical performances of two OC analyzers utilizable for this purpose are discussed here, and some examples of the results obtained by the direct measurement of OC consumption are presented. The consumption rates thus measured ranged from 11.6 to 50.2 mu gC/ 1.h. Although the technique discussed here is less sensitive than radiochemical methods, the few assumptions... |
| Tipo: Text |
Palavras-chave: Biogeochemistry; Microbiology; Carbon cycle; Organic carbon; Water; Heterotrophic organisms; Analytical techniques. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-950.pdf |
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| Flores Nardy Ribeiro,Araceli Verónica; Belisário,Marciela; Moretto Galazzi,Rodrigo; Cazoni Balthazar,Daniele; Godoi Pereira,Madson de; Nardy Ribeiro,Joselito. |
| The frequent contamination of water resources with drugs comprises one the most important environmental problems. In order to avoid serious disturbances for aquatic life, efficient and economically viable procedures should be developed for removing common pollutants, as paracetamol. From these considerations, the present work evaluated the efficiency of sugar cane bagasse (SCB) and vegetable sponge (VS), two natural adsorbents commonly found in Brazil, for retaining paracetamol molecules dispersed in aqueous solutions. Thus, systems composed of glass columns and peristaltic pumps were optimized and, for pH, the best value was 7.0. After optimisation, adsorption isotherms were built and it was possible to calculate the MAC F values for SCB (120.5 µg/g) and... |
| Tipo: Journal article |
Palavras-chave: Adsorption; Bioadsorbent; Paracetamol; Water. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000600007 |
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| Duke, Charlotte. |
| Experiments in economics and their application to policy design continue to gain increasing popular appeal. Australia is investing in training, capacity building and international partnerships to bring these skills to our policy makers. Economic experiments are used to test policy-related hypotheses: to examine the behavioural processes upon which the policy is built, identify policy bugs, confirm incentive mechanism performance, investigate new decision processes, and illustrate economic allocation systems to stakeholders. Experiments provide a new source of information to improve policy design. This paper explores a set of experiments conducted for the National Action Plan for Salinity and Water Quality Market Based Instruments Pilots Program. The... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Policy Experiments; Market mechanisms for the environment; Water; Resource /Energy Economics and Policy; Q25; Q28; C90. |
| Ano: 2006 |
URL: http://purl.umn.edu/25369 |
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| Santa Cruz, L.; Castro, D.; Sardiñas, O.. |
| Como parte del proyecto de implementación de la dieta macrobiótica en Cuba se valoró la situación de una arcilla italiana, empleada para enriquecer al agua potable con sales minerales, por una cubana similar (bentonita natural de Managua tipo 1). La caracterización minerológica, química y granulométrica de ambas arcillas fue similar. Se estudió el efecto de tres concentraciones de arcilla cubana en agua potable (0,1; 0,5 y 1 %) después de 24 h. Este tratamiento incrementó significativamente las concentraciones de sodio, magnesio y hierro y disminuyó las de calcio, cinc y cobre en el agua; todos los elementos cumplieron con las normas vigentes de agua potable. |
| Tipo: Journal Contribution |
Palavras-chave: Clay minerals; Water; Minerals; Food; Diets; Drinking water. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/5013 |
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| Le Gac, Pierre-yves; Arhant, Mael; Davies, Peter; Muhr, Alan. |
| Natural rubber has been successfully used in a marine environment for many years. However, most applications involve low dynamic loadings. Due to the emergence of marine energy recovery, wave and tidal energy converters are being developed. In some such devices, rubbers are subjected to severe cyclic loadings, very different from their previous use in air or water. Such rubbers must therefore be qualified for long-term use in sea water with high fatigue loading. This paper presents a study using a new fatigue machine that allows the fatigue behaviour of rubber in sea water to be compared to that in air. The results show that the benefit of non-relaxing conditions on fatigue lifetime of natural rubber can be significantly reduced when it is used in sea... |
| Tipo: Text |
Palavras-chave: Natural Rubber; Water; Fatigue; Stabilisation. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00211/32240/32195.pdf |
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| Chevillotte, Yoan; Marco, Yann; Bles, Guilhem; Devos, Karel; Keryer, Mathieu; Arhant, Mael; Davies, Peter. |
| This paper describes a study of the fatigue characterization of polyamide mooring ropes for floating wind turbines. Under some conditions polyester ropes, which are favoured for offshore oil and gas platform station-keeping, are too stiff for wind turbine moorings, and polyamide may be a suitable alternative. While early studies on fatigue of braided nylon ropes showed very short lifetimes some recent results have indicated that it is possible to significantly enhance lifetime by modifying rope construction and improving fibre coatings. In this paper yarn-on-yarn abrasion testing is used first to evaluate a new yarn coating. Significant lifetime enhancement was noted, so fatigue testing of ropes was then performed. Results confirm that excellent fatigue... |
| Tipo: Text |
Palavras-chave: Fatigue; Rope; Nylon; Mooring; Water; Floating wind turbine. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00607/71884/70609.pdf |
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| García Dávila, Alejandrina. |
| En comunidades indígenas de México, la organización comunitaria para la recolección y abastecimiento de agua es central para el desarrollo local. Sin embargo, el Estado ha impuesto normas que obstaculizan el funcionamiento de dicha organización. A esta situación se añade la inequidad de género, reflejada en la poca participación de las mujeres. La presente investigación analiza esta situación en dos comunidades oaxaqueñas. Utilizando datos provenientes de observación participante, entrevistas, una encuesta, dos talleres y varios recorridos de campo, se muestra cómo algunas mujeres están cuestionando los discursos que las excluyen de la toma de decisiones y abriendo espacios para sí mismas en la organización comunitaria. _______________ WATER, ETHNICITY AND... |
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Palavras-chave: Género; Etnia; Agua; Estado; Organización; Desarrollo rural; Maestría; Gender; Ethnicity; Water; State; Organization. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/674 |
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| Contreras Contreras, Elsa Angélica. |
| México se caracteriza por ser un sistema marcado por las desigualdades en la disponibilidad, acceso y control del agua, así como por un uso ineficiente de este recurso. El acceso no depende solamente de la abundancia o escasez natural del recurso, sino de otros factores que se relacionan con la forma en que la sociedad está organizada, quiénes toman las decisiones y con base en qué criterios se maneja y se distribuye el recurso. Los objetivos de investigación planteados fueron analizar de qué manera la mala distribución del agua afecta a hombres y mujeres; determinar si el género, la edad y el estrato social de las mujeres influyen en su uso y manejo e identificar las estrategias que llevan a cabo para el uso y manejo del agua en la microcuenca La Joya,... |
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Palavras-chave: Microcuenca; Género; Agua; Doméstico; Productivo; Sub-basin; Gender; Water; Household; Productive; Maestría; Desarrollo Rural. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/413 |
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| Registros recuperados: 237 | |
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