181. Factors affecting trichlorosilane synthesis
May 06, 2013
Reaction temperature was greatly affecting the generation of the trichlorosilane, if the temperature is too low, the reaction will slowly, too high (greater than 450°C), the SiHCl3 generated in the reaction was reduced and SiCl4 increased, this is because the SiCl4 structure having a high degree sym...
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182. Pay attention to the harmful ingredients in cosmetics
May 06, 2013
Common vitamin C can give our skin whitening and anti-oxidant effects, its cosmetic raw material standard Chinese name is ascorbic acid; while the vitamin A, in the cosmetic ingredients identified as retinol, with anti-aging effect; Vitamin B3 is identified as nicotinamide, with the effect of streng...
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183. Application research progress of spinosad
May 02, 2013
At present, spinosad products were widely used on cotton, fruits and vegetables, tea, tobacco, herbs, grain and other crops, the United States since 2004 was approved it registered for mosquito control. Although it has not been approved for registration on storage pests, livestock parasites and othe...
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184. Production of electrolytic nickel powder
May 02, 2013
Electrolytic nickel powder is referred to use electrolytic method to prepare nickel powder, or the electrolysis-reduced nickel powder through hydrogen reduction annealing. This product is mainly used in the atomic energy industry, alkaline batteries, electrical alloy, high-temperature and high-stren...
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185. Various effects of vitamin B7
May 02, 2013
A member of B vitamins family is unknown, very humble, and even have been ignored by a lot of people, but it also has its own unique value, is also an integral part of the human body, this is the vitamin B7, also known as biotin, vitamin H or coenzyme R, is a water-soluble B vitamins. According to b...
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186. How to proper use abamectin to control pest
April 27, 2013
Abamectin is a new type of antibiotic broad spectrum efficient insecticide miticide. Abamectin is a common insecticidal acaricide that majority of farmers use in the production. Other trade names include insects and mites enemy, perish insects and mites, avermectin, acetamiprid and so on, the market...
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187. Effects of various impurity elements on the stainless steel
April 27, 2013
Silicon is the element that form of ferrite, is a normal impurity element in general stainless steel. According to metal powder supplier, cobalt as an alloying element is rarely used in steel, this is because of the high price of cobalt and it has more important purposes in other respects (such as h...
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188. The important role of glutathione
April 27, 2013
Glutathione is a tripeptide compound composed by the amino acid, glutamic acid (glutamate) and cysteine three amino acids. Dietary glutathione is found in fruits, vegetables, especially asparagus, avocados, walnuts, fish and meat. Glutathione is called "antioxidants master", can help the body cells...
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189. Research and development course of spinosad
April 25, 2013
Since the chemical pesticide appears, it plays an extremely important role on the control of pests in agriculture and forestry, ensuring high yield and stable yield of agroforestry. But the resistance, residues, pest resurgence and other negative effects caused by conventional chemical pesticides ca...
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190. The raw material of zinc-manganese dry battery
April 25, 2013
Zinc-manganese batteries are made of flour, starch and so on, make the electrolyte become gel, does not flow, form a barrier, or be separated using cotton, paper, etc. Zinc manganese battery’s start using voltage is different with the using type of MnO2, electrolytes and pH value, usually in 1.55~1....
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Author: Ma tracy
