نتایج جستجو برای: today many countries have water shortage problems
تعداد نتایج: 4308633 فیلتر نتایج به سال:
BACKGROUND Drug shortages are a global problem. While extensively studied in the United States, numbers about drug shortages in European countries are scarce. This study aims to collect and present data about drug shortages in European countries. METHODS A reporting template for the collection of data about drug shortages was designed based on a literature search. Countries offering a reporti...
The provision of clean water is mentioned as an important factor in many studies dealing with the decline of mortality in Europe during the late nineteenth and early twentieth centuries. In developing countries too, improved water supply is assumed to have a strong impact on mortality. When studying the effect of water supply on public health, researchers are confronted with many methodological...
Medical service in many African countries is affected by the limited infrastructure and the lack of economic and human potentials. Uganda is one the countries that suffers from lack of physicians as well as shortage of many medical facilities with many endemic health problems such as Goiter. A surgical camp was done by an Egyptian team of 8 physicians; three general surgeons, one pediatric surg...
International rivers, as borders or crossing national borders, have been considered as a significant part of international relations. Especially, approximately half of the worldchr('39')s population lives within the basin of these rivers, and more than 90% are living in countries with these basins. This condition, by creating an undeniable relationship of interdependence, has made water a criti...
This paper summarises the paper presentation sessions at the Conference, as well giving insights on the issues related to developing countries. It also discusses the present status of practice and research on water and wastewater management, and projected future scenario based not only on the papers presented in the Conference, but also on other sources. The strategy is presented to overcome ma...
With the rapidly increasing demands on water resources, fresh water shortage has become an important issue affecting the economic and social development in many countries. As one of the main technologies for producing fresh water from saline water and other wastewater sources, reverse osmosis (RO) has been widely used so far. However, a major challenge facing widespread application of RO techno...
Thousands and thousands of people are suffering from the toxic effect of arsenic in many countries. It is due to natural ground water contamination as well as industrial hazards waste and drainage problems. Permissible level of arsenic in water is 0.01 ppb defined by World Health Organization. The delta region of Brahmaputra and Ganga is one of the world’s most affected areas. The central porti...
due to shortage of precipitation and the spatial and periodical disparity of rainfalls, iran iscounted among the arid and semi-arid countries of the world, and therefore the water utilities have put thecontrol of consumption and efficient use of water high on their priorities. water consumption management isconsidered as a field of energy management, and the impacts of effective measure related...
abstract water is a vital resource for every biological and human phenomena. nowadays, water management and conservation has a great importance not only in developing countries, but also in developed countries. in traditional economics, water is not taken into consideration as a factor of production in the national accounts. nevertheless in reality, water is the primary input of many goods and ...
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