نتایج جستجو برای: ferrous and nonferrous industries
تعداد نتایج: 16831407 فیلتر نتایج به سال:
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
environmental protection has become one of the main concerns in developed economies, which is why an increasing degree of commitment in the field is required from all public and private bodies. environmental protection in firms must cease to be a secondary, barely profitable objective, involving the performance of sporadic remedial actions, and become just one more element of their organization...
the main purpose of this study was to identify and analyze factors affecting development of entrepreneurship in complementary and processing industries of citrus products at khouzestan province, iran. the statistical population of this study consisted of all managers in processing and complementary industries of citrus products in khouzestan province (n=89). by census method all managers were s...
background: ferrous sulfate is the most used supplement for treating anemia, but it can result in unfavorable side effects. nowadays, nanotechnology is used as a way to increase bioavailability and decrease the side effects of drugs and nutrients. this study investigates the effects of nanoparticles containing iron on blood and inflammatory markers in comparison to ferrous sulfate in anemic rat...
Owing to global trends, automation with the fourth industrial revolution, and environmentally friendly policies owing certified emission reduction, wire arc additive manufacturing (WAAM) is attracting attention in various fields. In addition, demands of non-ferrous metals such as aluminum magnesium alloys are from industries that require lightweight, large, complex metallic parts can be fabrica...
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