نتایج جستجو برای: according to various pollution sources
تعداد نتایج: 10744379 فیلتر نتایج به سال:
Solomon Benatar In response to the case study by Kass et al. on research ethics committees (RECs) in Africa [1], the following additional information is provided about capacity building for research ethics in South Africa. South Africa has two programs funded by the Fogarty International Center: the International Research Ethics Network for Southern Africa (IRENSA; see http:⁄⁄www.irensa. org) b...
This study investigates spatial water quality assessment of selected river basins in the three different states in Malaysia. Environmetric techniques namely, cluster analysis (CA), principal component analysis (PCA), and discriminant analysis (DA), were applied to study the spatial variations of the most significant water quality variables in order to determine the origin of pollution sources ...
Diverse contaminants released into the environment through progress of urbanization and industrialization adversely affect human health. Among various sources of contaminants, especially, in big cities, automobiles play a significant role in aggravating the pollution. Various pollutants viz., heavy metals (Pb, Mn, Ni, Zn, As, Hg, Cd) and Polyaromatic hydrocarbons (Benzo-apyrene, fluoranthene, p...
Background and purpose: In 1978, the Kuwait Regional Convention for Co-operation on Protection of the Marine Environment from Pollution was signed between the countries of the region. Iran, Saudi Arabia, Kuwait, Iraq, United Arab Emirates, and Qatar are exporting their petroleum from this semi-enclosed sea. According to the convention signatory countries pledged to take all necessary actions to...
Introduction; controlling noise pollution in an indoor environment has always been faced with administrative and financial constraints. Prioritizing in a scientific manner is a useful approach in dealing with such problems. The aim of the present study was to determine the noise control prioritizing index (NCPI) in various units from a tire manufacturing company. Methods; the sound pre...
abstract nowadaysphotovoltaic solar cells (pvs) areacknowledged the fastest growing energy technology in the word, however, they only account for only fraction of current global renewable energy capacity. it isrecognized that this incomplete market penetration has been largely a result of the technology’sexcessive cost. so researchers are trying to find innovative, economic way with theaim of ...
Both field measurements and model simulation studies have shown that Israel is the recipient of long range transported air pollutants that originated over various parts of Europe. The present paper presents results of aircraft measurements aimed at quantitizing the sulfur flux arriving at Israel's western coast from Europe and the Israeli pollution contribution to the air masses leaving its eas...
a short overview about cadmium and its toxicity focused on humans, bioindicators and model organisms
according to paracelsus (1493-1541) everything from this planet is poison, only the dose makes the poison to be harmless. even the essential elements for life support are toxic for all organisms in high amounts. mercury, cadmium, metalloid arsenic and lead were responsible for poisoning and death of many humans and life forms from this planet for centuries. cadmium forms different compounds tha...
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