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已读[191] 发布: 2013/07/28 23:19:15
Altus Times Master Sgt. Kenneth Estes, 97th Medical Operations Squadron NCO in charge of bioenvironmental engineering, prepares to add Phenol Red Solution to a water sample, July 16, 2013 during a routine water sampling. Members of the 97th MDOS bioenvironmental ...
已读[201] 发布: 2013/07/28 23:19:10
BioNews Texas This new process resolves a long-standing problem in organic chemistry in making phenolic compounds from aromatic hydrocarbons quickly and cheaply. Phenols (phenolic compounds ) are used as disinfectants, fungicides and drugs. Making a phenol   ... and more »
已读[185] 发布: 2013/07/28 23:19:06
Science Daily (press release) Phenolic compounds , or phenols, are broadly used as disinfectants, fungicides and drugs to treat many ailments such as Parkinson's disease. Creating a phenol seems deceptively simple. All it requires is replacing a hydrogen molecule on an aromatic  ... and more »
已读[199] 发布: 2013/07/28 23:19:01
The Age Dr Joe Grech says, 'the Reading studies are revolutionary and the actions of phenol compounds on the enzyme systems that alter the proteins that form memories in the hippocampus and cortex are newly discovered and little understood. "The long term  ... and more »
已读[599] 发布: 2013/07/28 22:25:33
不仅如此,若食物因变质含有胺类物质,则会产生强致癌物――亚硝胺,对人体产生潜在危害。 因此选择蔬果的时候一定不能选择表皮已经破损比较严重或是已经溃烂变质的水果...
已读[301] 发布: 2013/07/28 19:04:03
Telemanagement Hydrogen peroxide oxidizes the ester, producing phenol and an unstable peroxyacid ester, which decomposes, resulting in more phenol , and a cyclic peroxy compound. - The cyclic peroxy compound decomposes, and carbon dioxide is formed, releasing  ...
已读[871] 发布: 2013/07/28 16:12:40
DailyFinance by Business Wire via The Motley Fool Jul 26th 2013 3 :23PM Updated Jul 26th 2013 3 :24PM. Axiall Corporation To Announce ... a leading integrated chemicals and building products company. It is an international manufacturer of chlor-alkali and derivatives ...
已读[499] 发布: 2013/07/28 14:33:50
白玉兰含有芳樟醇、苯乙醇、甲基丁香酚等成分,经收集后可供作熏茶、酿酒或提炼香精。现在好些表现白兰香型的香水、润肤霜、雪花膏都常用白兰花为配料,能够用于美容、...
已读[312] 发布: 2013/07/12 20:17:04
全部滤液于35℃减压浓缩至原体积1/3,再用1mol/LNa2HPO4调节至pH=8.0,加入等体积石油醚萃取脱色3~5次,弃去酯相后,加入0.1g聚乙烯聚吡咯烷酮(PVPP)吸附酚类...
已读[339] 发布: 2013/07/12 20:16:43
实际上,放一段时间,就是让茶内的酚类、醇类进一步氧化。 牛学恩主任医师介绍,饮茶除了上述注意事项之外,还要结合自身的体质。他说,胃寒者,多有舌苔白腻、手脚凉...
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