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已读[471] 发布: 2013/06/15 14:03:19
碱基、核苷及核苷酸 碱基(Base)是核酸水解所产生的含氮杂环化合物。主要是嘧啶或嘌呤的衍生物。 核苷(Nucleoside)是由碱基、戊糖(D-核糖或2-脱氧-D-核糖)组成...
已读[279] 发布: 2013/06/15 14:02:18
世界最大的吡啶、甲基吡啶和吡啶衍生物的生产商,美国凡特鲁斯特种产品公司(简称“... 吡啶作为一种重要的精细化工原料,是目前杂环化合物中应用范围最为广泛的品种之...
已读[489] 发布: 2013/06/15 14:00:32
MarketWatch (press release) This report details the actuals for 2007, 2011 and 2012 and compound annual growth rate (CAGR) projections for 2017. .... 117Gas Technology Institute Membranes 118Sulfonated Perfluorocyclobutane Membranes 118Motorola Heterocyclic and Polybenimidizole ...
已读[223] 发布: 2013/06/15 14:00:08
ABC News That's not the only scary part of grilling, either: Compounds called heterocyclic amines (HCAs) and polycyclic aromatic hydrocarbons (PAHs) form when meat is exposed to high heat or flames, says Alice Bender, MS, RDN, nutrition communications manager  ... and more »
已读[235] 发布: 2013/06/15 10:37:12
Sacramento Bee ... FUEL CELL IONOMER SYNTHESIS 93 TABLE 30 MEMBRANE FABRICATION TECHNIQUE 94 PHASE SEPARATION 94 CASTING SOLVENT 95 Ethylene Glycol as Solvent 95 IMPACT OF MEMBRANE THICKNESS 95 MEMBRANE FUNCTIONALIZATION .... University Approach 224 Hong Kong ...
已读[2025] 发布: 2013/06/15 02:32:18
大大促进了我国农药行业产品质量整体水平的提高,目前我国已有40几个品种如磷化铝、林丹、甲胺磷、乙酰甲胺磷、灭多威、多菌灵、百菌清、霜脲氰 、氰戊菊酯、丁草...
已读[772] 发布: 2013/06/13 21:13:43
The Herald | HeraldOnline.com ... FUEL CELL IONOMER SYNTHESIS 93 TABLE 30 MEMBRANE FABRICATION TECHNIQUE 94 PHASE SEPARATION 94 CASTING SOLVENT 95 Ethylene Glycol as Solvent 95 IMPACT OF MEMBRANE THICKNESS 95 MEMBRANE FUNCTIONALIZATION .... " Black Metal" Approach 247 Transition ... and more »
已读[1004] 发布: 2013/06/13 07:28:07
Pharmaceutical Technology Magazine To address that problem, the researchers used zinc sulfinate salts to transfer alkyl radicals to heterocycles, thereby allowing for the mild (i.e., moderate temperature, 50 °C or less), direct, and simple formation of carbon–carbon bonds while reacting ...
已读[234] 发布: 2013/06/12 19:48:44
Monroe News Star Charring and cooking meat, poultry and fish under high heat causes compounds called heterocyclic amines and polycyclic aromatic hydrocarbons to form. These substances have shown the ability to damage our DNA in ways that make cancer more likely.
已读[240] 发布: 2013/06/12 19:48:34
Bothell/Kenmore Reporter The reason is that when meat products are cooked over high temperatures or touched by flames and smoke, they form certain chemical compounds , specifically Heterocyclic Amines (HCA) and Polycyclic Aromatic Hydrocarbons (PAH), which are deemed to ...
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