نتایج جستجو برای: new energy sources
تعداد نتایج: 2637338 فیلتر نتایج به سال:
in the recent years, interstitial brachytherapy implantation has become the treatment of choice for early stage prostate cancer patients. treatment of prostate cancer with radiation is traced back to 1909. originally this treatment modality was very crude and could not gain much popularity till 1982. advancements in radioactive source designs, introduction of new low energy radioactive sources,...
Scientists all over the world are in search of new and renewable energy sources. One of the options is to develop energy storage devices, which are as important as developing new sources of energy. Thermal energy storage systems provide the potential to attain energy savings, which in turn reduce the environment impact related to energy use. Infact, these systems provide a valuable solution for...
Energy as a geopolitical factor has gained a special occasion in power games of the world and access to energy resources has become a strategic importance for all levels of hierarchy of global power. Hormozgan province is one of the industrial provinces of Iran and this subject has caused to has been growing energy consumption in the province. Limited fossil energy resources and the problems of...
some new water-soluble schiff base complexes of na2[m(5-so3-1,2-salophen)].nh2o; (5-so3-1,2-salophen = n,n’-bis(5-sulphosalicyliden)-1,2-phenylendiamine); na2[m(5-so3-2,3-salpyr)(h2o)n].2h2o; (5-so3-2,3-salpyr = n,n’-bis(5-sulphosalicyliden)-2,3-diaminopyridine); and na2[m(5-so3-3,4-salbenz)(h2o)n].nh2o; (5-so3-3,4-salbenz = n,n’-bis(5-sulphosalicyliden)-3,4-diaminobenzophenon); where m = cu, n...
china has been in a process of intensive industrialisation in recent years; and as a result, the country is now one of the largest growing economies in the world. throughout the 1970s and 1980s, china was exporting oil, but in 1993 it became to an importer of oil. china's economic growth in recent years has turned the country into the second biggest consumer of energy and the third largest impo...
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