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| Articles by Ma tracy |
211. Heat treatment of cast iron
April 07, 2013
Cast iron is the earlier used material in the history, also one of the cheapest metal materials. Cast iron is cost low, the production process is simple and has excellent casting and cutting performance, also has high wear-resisting, less friction and eliminate shock resistance and low notch sensiti...
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212. The role of glutathione on the human body
April 07, 2013
Now, no matter in the liver disease department or oncology, can often see the glutathione drug, in beauty market, glutathione products welcomed by women who pursuing beauty; some elderly found that, their health care products contains glutathione. Glutathione is what kind of a material in the end? H...
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213. The nature and application of spinosad
March 31, 2013
The pure spinosad is a white or grayish white solid crystallized, with a similar slight odor of stale soil, is the mixture of 85% - 88% spinosad component A and 12% - 15% spinosad compound D. Spinosad is not soluble in water, soluble in organic solvents, such as methanol, ethanol, acetonitrile, acet...
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214. The use of silicon element
March 31, 2013
Due to the unique structure of the organic silicon, it both have the performance of the inorganic material and organic material, with the basic properties of low surface tension, low viscosity-temperature coefficient, high compressibility, high gas permeability and so on, also with high temperature ...
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215. Careful used the pregnant women cosmetics
March 31, 2013
The 30-year-old woman called Miss Zhang who had been pregnant for three months. Recently, Miss Zhang is always puzzled about whether put on makeup or not, because Miss Zhang is doing a sales job in the bank, the external image is very important at ordinary times, and put on makeup also become a habi...
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216. The expelling parasite effect of avermectin
March 27, 2013
Avermectin has the advantage of getting rid of the pigs’ internal and external parasites at the same time, it has expelling and killing effect on the gastrointestinal nematode parasites, such as ascaris suum, pig gastric round nematodes, hog esophagus nematode (nodular worm) and pig hair nematodes’ ...
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217. Powder sintering theory
March 27, 2013
Powder sintering theory revolves around two basic questions: First, the driving force of sintering or thermodynamics; second, sintering mechanism or dynamics problem. The powder sintering theory began in the early 1820s. In 1942, scientists using physical and chemical research methods determined the...
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218. Interpretation of Chinese biotin export market trends
March 27, 2013
The real turning point of Chinese biotin production came in 2001 and 2002. Chinese researchers first invented the "d-biological factors asymmetric synthesis of a new process" in the international market, since then, broken the long time leading position of big Western companies in biotin synthesis p...
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219. The alternatives of highly toxic pesticide
March 25, 2013
The bollworm occur in the middle and the later period of the cotton growing, mainly use the larvae to endanger cotton’s reproductive organs, resulting in a large number of bud, flower and boll shedding and boll rot. At present, Ministry of Agriculture recommended to be used to replace the highly tox...
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220. Broad application prospects of nanomaterials
March 25, 2013
Nano-electrostatic shielding materials used in household appliances and other electrical equipments have a good static shielding role. Usually the electrical enclosure are made of resin plus carbon black paint spraying to form a smooth surface, due to the carbon black have conductive effect, so the ...
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Author: Ma tracy
