نتایج جستجو برای: gotvand irrigation scheme
تعداد نتایج: 264585 فیلتر نتایج به سال:
The performance of irrigation schemes around the world has been below expectations. assessment is an essential step towards improving agricultural water use. One primary indicators relative supply (RIS, ratio between amount delivered and crop net requirements). This study presents a worldwide analysis scheme by evaluating key attributes that influence RIS. was based on review reports scientific...
Irrigation schemes and dams have posed a great concern on public health systems of several countries, mainly in the tropics. The focus of the present review is to elucidate the different ways how these human interventions may have an effect on population dynamics of anopheline mosquitoes and hence, how local malaria transmission patterns may be changed. We discuss different studies within the t...
Olive mill wastewater (OMW) produced from small units scattered in rural areas of Southern Europe is a major source of pollution of surface and subsurface water. In the present work, a treatment scheme based on physical separation methods is presented. The investigation was carried out using a pilot-plant unit equipped with ultrafiltration, nanofiltration, and reverse osmosis membranes. Approxi...
For water levels, generally a non-stationary variable, the technique of universal kriging is applied in preference to ordinary kriging as the interpolation method. Each set of data in every sector can fit different empirical semivariogram models since they have different spatial structures. These models can be classified as circular, spherical, tetraspherical, pentaspherical, exponential, gauss...
This paper discusses the concept of full-cost recovery and its applicability to the water industry; building on this analysis, it proposes a methodology for assessing the financial structure of the water industry, in which the different perequation mechanisms are envisaged. The proposed scheme is then applied in order to analyze the financial structure of European irrigation and understand the ...
Some variational models have been recently introduced to the aim of modeling ramified structures, such as trees, rivers and so on. We introduce a general scheme in which the notion of transport distance is introduced starting from a general transport cost functional, through relaxation arguments. Then we apply this general framework to the irrigation cost, which is a particular cost functional ...
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