نتایج جستجو برای: water environmental capacity
تعداد نتایج: 1120906 فیلتر نتایج به سال:
We present new mathematical and geological models to assist civil protection authorities in the mitigation of potential oil spill accidents in the Eastern Mediterranean Sea. Oil spill simulations for 19 existing offshore wells were carried out based on novel and high resolution bathymetric, meteorological, oceanographic, and geomorphological data. The simulations show a trend for east and north...
At the 1972 Stockholm Conference on Environment, the world community called for a standing watch on global trends in key environmental sectors. From this concern grew the United Nations "Global Environment Monitoring System" (GEMS). Surface and groundwater quality is one component (GEMS/Water). Global patterns of surface water pollution have been summarized by GEMS for the UNCED process. The co...
China harbors one of the most species-rich floras in the world. This plant diversity is currently severely threatened by high levels of habitat degradation and unsustainable resource extraction, the country’s exceptionally fast economic growth, an uncontrolled increase in tourism, invasive species, and climate change. Furthermore, China’s current system of protected areas is ineffective at cons...
When we speak of a healthful environment, we think mainly of safe, wholesome, palatable water, of a healthful diet, of clean air, and of shelter for our families where they live, and work, and rest. The need for a healthful environment is common to all peoples: it cuts across boundaries of occupation, race, class, and politics. If it differs from neighborhood to neighborhood, and from region to...
In this study, aniline-formaldehyde polymer was synthesized and then modified with extra aniline as cross-linker in the presence and absence of Ni(II) as the template to produce Ion Imprinted Poly(Aniline-Formaldehyde) (IIPAF) and Non Imprinted Poly(Aniline-Formaldehyde)(NIPAF) The IIPAF was subjected to adsorption, preconcentration and determination of Ni(II) ion in envir...
Photoinhibition in plants depends on the extent of light energy being absorbed in excess of what can be used in photochemistry and is expected to increase as environmental constraints limit CO2 assimilation. Water stress induces the closure of stomata, limiting carbon availability at the carboxylation sites in the chloroplasts and, therefore, resulting in an excessive excitation of the photosyn...
Water pollution caused by thermal power plant effluent discharges has become a worrisome phenomenon due to its impact on environmental health and safety. Many treatment processes that have been used to remove heavy metals from wastewater are suffered from high cost. Chitosan is a low cost adsorbent which is biodegradable and biocompatible polymer obtained from shrimp biowaste. In the present st...
The primary objective of this paper is to enhance the water-vapor-adsorption capacity of multiwall-carbon-nanotube (MWCNT) from nitrogen gas by grafting sulfonic acid groups and doping palladium nanoparticles into the adsorbent. MWCNT has been selected to be modified because of having homogeneous adsorption energy compared to silica gel. As a result, it is capable of creating isotherm having sh...
abstract soil quality is an essential concept for maximum agriculture production without environmental destruction. studying soil physical quality indicators, that express soil structural stability and soil air-water balance in root zone, is one of the most important aspects of soil quality. so determination of optimal range for pore volume distribution is important and this research carried ou...
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