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The results showed that there were 8 kinds of aliphatic, 5 kinds of esters, 2 kinds of aldehydes, 2 kinds of nitrogen sulfur heterocyclic rings and one kind of hydrocarbon, alcoholics, ketone, lactones respectively in the analyzed 21 kinds of aroma components, and the content of furfural,β-methyl valeric acid, palmitic acid, nicotine, neohytadiene were higher, next were acetyl ethyl propionate, caleric acid, phenyl ethyl acetate, hydroxylic diethyl succinate.

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The effects of ultrasonication and HF washing on SiC nano-particles were analyzed by Zeta potential, particle size distribution and SEM. The stability of suspension of SiC in ethanol, ethanediol and mixture of the two medias with PEG as dispersant at different pH were compared. The optimum ultrasonication time for SiC nano-particles was obtained. The influence of HF washing on SiC nano-particles was discussed; and high stability of SiC nano-particles suspension was achieved at pH=10 in ethanediol with 1wt% PEG as dispersant.

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A new process has been studied to synthesize malonic acid from diethyl malonate through hydrolysis reaction and catalyzing by 732 type cation exchange resin.

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It was discovered that trimalonic acid C60国产一级aⅴ无码免费、fullerol、dimalonic[60]fullerene hydrolysateXX网站在线、tetraethyl methano[60]fullerenediphosphonate浓毛少妇牲交、methano[60]fullerenediphosphonic acid and dimalonic acid C60 exhibited different inhibitory effects on Taq DNA polymerase.

實(shí)驗(yàn)發(fā)現(xiàn)，6種富勒烯衍生物三丙二酸富勒烯综合九九色、富勒醇色中色综合网、富勒烯丙二酸水解物欧美一区精品在线观看、亞甲基富勒烯二膦酸四乙酯、亞甲基富勒烯二膦酸四乙酯的完全水解物和二丙二酸富勒烯對(duì)Taq DNA聚合酶存在不同程度的抑制作用jizz18国产在线观看。