نتایج جستجو برای: effective concentration
تعداد نتایج: 1035430 فیلتر نتایج به سال:
The object of research is the hydrophobization a coating based on styrene-acrylic copolymer and cellulose acetate butyrate with pyrogenic silicon dioxide. hydrophobicity or hydrophilicity surface depends mainly chemical structure its roughness. A relief hydrophilic will be wetted much more easily than flat same material, vice versa – an increase in roughness hydrophobe accompanied by pronounced...
Background & Aims: Human beings are constantly exposed to different radiations that have always been recognized as a health hazard. Radon -222 and its daughter products are major sources of natural radiations and a significant total inhalation dose is related to them. Hence, the measurement of radon activity in the environment has gained an increasing importance. In this study, with the measure...
Background: Tea is one of the most popular beverages all over the world which is prepared from the leaves of a shrub camellia sinensis. Eastern Black Sea Region of Turkey which account for around 100% of all tea production in Turkey was among the areas contaminated by Chernobyl accident. Materials and Methods: A comprehensive study was planned and carried out to determine the level of ...
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