نتایج جستجو برای: chemical reactions
تعداد نتایج: 523086 فیلتر نتایج به سال:
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abstract the aim of this study is laboratory investigation of nitrate reduction in water using fe/cu nano particles. in this regards, nano fe0 (54±4 nm) and fe/cu particles (75±3 nm) was synthesized and characterized by x-ray diffraction pattern (xrd), scanning electron microscope (sem) and transmission electron microscopy (tem) photographs. the effects of coating load of nano-fe0 by cu (0, 5, ...
at the article, the hazardous elements in the repositories have been introduced and preventive measures were brought up by the author. damages to records break up into three major physical, biological and chemical ones such as below: - physical destruction, which comes from heat, humidity, light and dust - biological elements: micro-organisms, bacteria, fungi, moulds, insects and rodents ...
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