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- Ethyl chloroformate reacted with both the hydroxy group and the carboxy group of the 17 position. 用氯甲酸乙酯將17位醇羥基和羧羥基同時(shí)?；?
- Because of the strong interaction between the trimethychlorosilicane and surface hydroxy groups of mordenite, silylation is used to modify mordenite. 本文旨在通過(guò)硅烷化、脫鋁改性絲光沸石，以提高絲光沸石疏水性能，為疏水沸石的開(kāi)發(fā)利用提供一些基本數據和實(shí)驗依據。
- Thus, the reaction of methanol with hydroxy group on the surface of zinc oxide surface was reversible. 因此甲醇在氧化鋅表面吸附生成甲氧基和水的反應是可逆的。
- The toxicity of derivatives considered is far stronger, on account of methyl and hydroxy group substituted, than their mother (phenol) substance. 實(shí)驗表明，羥基增加和甲基的取代，毒性均較母體大大增強。
- The resent work aims to investigate and develop series of monoazo dyes containing hydroxy group for the polyester/wool blend fabrics. 摘要本實(shí)驗系利用自行合成之含羥基偶氮染料及微膠囊包覆分別對聚酯、羊毛及聚酯／羊毛混紡織物進(jìn)行染色；
- Methods:The target compounds were synthesized from acylation of polyethylene glycol (PEG) to hydroxy group of ursolic acid by polymer polycondensation method. 方法:通過(guò)高分子縮合的方法,將?；木垡叶冀又Φ叫芄岬牧u基上,得到目標產(chǎn)物。
- The hapten iPA has been selected and conjugated,via its hydroxy groups of the ribose moiety,to free amino groups of bovine serum albumin(BSA) with NaIO4 oxidation and the immuogen iPA-N9-BSA has been synthesised. 用NaIO4氧化合成免疫原iPA－N9－BSA（BSA：牛血清白蛋白）。
- The acetyl derivative and the silicane derivative of hyperbranched aliphatic polyesters with terminal hydroxy group were prepared.The effect of terminal groups on the properties was studied. 對端羥基脂肪族超支化高分子的端基進(jìn)行了乙?；凸柰榛男?研究了不同端基對超支化高分子的玻璃化溫度,折光指數增量以及特性粘度的影響。
- CaCO3 was treated with 3-aminopropyltriethoxysilane at first, followed by the condensation reaction with the hydroxy group of ACPA. The coupling and anchoring reactions are confirmed by infrared spectrum and element analysis. 碳酸鈣粒子經(jīng)氨基硅烷偶聯(lián)劑處理后能與偶氮二氰基戊酸反應而實(shí)現錨固化,由紅外光譜和元素分析證明了偶聯(lián)和錨固反應。
- SnBu_4 could react with superficial hydroxy group of Pt/HY molecular sieve,to result selective and quantitative grafting of SnBu_3 fragments onto surface of molecular sieve supercages without deteriorating crystalline structure of the latter. 研究結果表明,SnBu4與Pt/HY分子篩表面羥基可以定量、有選擇性地進(jìn)行化學(xué)反應,將確定數目的SnBu3碎片接枝在分子篩的超籠中。
- The silicone molecules in the coatings can be adhered with the hydroxy group on the surface of substrate to form a network hydrophobic silicone film with excellent water proofness and durability. 涂料中的有機硅分子與基材表面的羥基緊密結合，形成網(wǎng)狀疏水性硅氧烷膜，成為一種防水性、耐久性?xún)?yōu)的防水劑。
- Study on Hydroxy Group Protection of Lactic Acid 乳酸羥基保護的研究
- any of a class of alcohols having 2 hydroxy groups in each molecule 每個(gè)分子中含兩個(gè)羥基的一類(lèi)醇
- Keywords Lactic acid;Hydroxy group protection;Dihydropyran; 乳酸;羥基保護;二氫吡喃;
- Do you teach your students singly or in groups? 你教學(xué)生是個(gè)別地教還是按組教？
- Keywords NCA;ring-opening polymerization;triphosgene;functional hydroxy groups; 谷氨酸-芐酯環(huán)內酸酐;開(kāi)環(huán)聚合;三光氣;功能羥基;
- Education should not be restricted to any one specific age group. 教育不應限制在任何特定的年齡組上。
- The investigator will be divided into three groups. 所有的調查員將被分為三個(gè)小組。
- He broke away from that lawless group years ago. 他在幾年前脫離了那個(gè)非法團體。
- The group of barbaric soldiers killed many people. 那群野蠻的士兵殺了很多人。
