نتایج جستجو برای: sodium carbonate
تعداد نتایج: 210263 فیلتر نتایج به سال:
In this research, synthesis and characterization of silver/alumina composite powders was investigated. This kind of metal/ceramic composite powders is used for fabrication of cutting tools inserts. The role of silver is toughening the final product. The powders were synthesized via co-precipitation method. The composition of the synthesized powders was Ag/80% wt 〖Al〗_2 O_3. Silver nitrate, alum...
one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...
The commercial preparation named “Tripterygium glycosides” prepared by column chromatography has been used for the treatment of inflammatory and autoimmune diseases with significant efficacy but concurrent toxicity. The aim of this study was to reduce the toxicity of Tripterygium extracts, using cytotoxicity and anti-inflammatory activity of the three principal active components of Tripterygium...
Dehydration of N -formamides to isocyanides using p -toluen sulphonyl chloride, sodium hydrogen carbonate in aqueous micelles is reported.
In order to improve the acid-resistant property of papermaking grade precipitated calcium carbonate filler and to obtain modified filler in powder form, sodium silicate/zinc chloride based modifiers were used in filler modification, and the use of modified filler in papermaking of deinked pulp derived from recycled newspaper was also preliminarily investigated. Under the preliminarily optimized...
OBJECTIVE Ocular dryness is a well-recognized adverse side effect of many topical and systemic medications. In psychiatry, patients who have consumed such drugs as lithium carbonate and sodium valproate frequently experience dry eye symptoms. The purpose of this study was to compare tear film stability between patients who use these drugs with those patients who are not on medication. METHODS...
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