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- Purification and characterization of diol dehydratase of Lactobacillus diolivorans 二醇脱水酶的分离纯化与酶学性质
- diol dehydratase 二醇脱水酶
- Polyether diol mainly adopts polytetramethylene ether glycol (PTMEG). 聚醚二醇主要采用聚四氢呋喃醚二醇（PTMEG）。
- Both prephenate dehydrogenase and prephenate dehydratase have been isolated from plants. 预苯酸脱氢酶和预苯酸脱水酶都已从植物中分离出来。
- The extractants are introduced by five parts,such as monobasic alcohol,diol,mixed alcohol,hydroxyl amine and others. 把提硼的萃取剂分为一元醇、二元醇、混合醇、羟基胺和其他类5部分加以叙述。
- The polyurethane adhesives with solvent were prepared by polyester diol,1,4-butanediol,HDI and methyl ethyl ketone. 采用聚酯二元醇、1,4丁二醇、1,6-己二异氰酸酯以及丁酮为主要原料,合成溶剂型单组分聚氨酯胶粘剂。
- Polyhexamethylene adipate diol and Polyurethane aquocmulsion based on the polyester are prepared. 以己二酸、己二醇为原料合成聚己二酸己二醇酯二醇,并制备成聚氨酯水乳液。
- Polyurethane/epoxy blends were prepared via in-situ polymerization based on an aromatic diol. 以自制的芳香型二元醇为原料,用原位聚合的方法制备了芳香型聚氨酯/环氧树脂共混材料。
- The diol chain-extension agent is an important factor influencing the physical performance of TPU. 二醇扩链剂是影响TPU物理性能的一个重要因素。
- The water-borne polyurethane was based on polyester diol,and toluene diisocyanate etc. 以聚酯多元醇、甲苯二异氰酸酯为主要原料合成了水性聚氨酯乳液。
- The effects of diol content on the dynamic mechanical properties and impact strength of the blends were investigated. 系统地研究了二元醇含量对共混材料动态力学性能、冲击性能的关系。
- Ethylene gycol: thick liquid diol (a compound containing two hydroxyl groups) C2H6O2used especially as an antifreeze and in making polyester fibers. 乙二醇:较浓的液体二醇(包含两个羟基的化合物)C2H6O2,通常用作防冻剂和制造聚酯纤维。
- Catalytic systems with diesters, diethers, diketones and diol esters as the internal electronic donors are newly emerging Ziegler-Natta systems. 其中，以二醚类、二酮类和二醇酯类化合物为内给电子体的催化体系是近年发展起来的新型齐格勒－纳塔催化剂体系。
- A cation polyurethane emulsion for glass fibers is prepared from TDI, polyether diol, castor oil,diethylene glycol, hydrophile extender, etc. 以甲苯二异氰酸酯、聚醚多元醇、蓖麻油、一缩二乙二醇及亲水性扩链剂等为原料制得一种阳离子型聚氨酯乳液，用于玻璃纤维浸润剂。
- Catalytic systems with diesters,diethers,diketones and diol esters as the internal electronic donors are newly emerging Ziegler-Natta systems. 其中,以二醚类、二酮类和二醇酯类化合物为内给电子体的催化体系是近年发展起来的新型齐格勒-纳塔催化剂体系。
- Pol yurethane hot-melt adhesive was prepared which based on home-made polyester low molecular weight diol chain-extender 、isocyanate and other. 以自制的二元醇、低相对分子质量的扩链剂和二异氰酸酯及其他助剂合成聚氨醇热熔胶粘剂。
- The thiophane ring was established via reduction of hemiacetal, mesylation of diol, and double SN2 substitution of dimesylate. 经半缩醛的还原，甲磺酸酯化，硫代关环，构建四氢噻吩环；
- The thiophane ring was established via reduction of hemiacetal, tosylation of diol, and double SN2 substitution of ditosylate. 第二章设计了以从棕榈籽制备的D-甘露糖为手性源，经聚苯乙烯负载三氯化铁催化异亚丙基化、苯甲酰基保护、选择性水解、聚苯乙烯负载二乙酸碘苯氧化、Wittig-Horner反应引入侧链、催化氢化、一锅法脱苯甲酰基及半缩醛还原、对甲苯磺酸酯化、硫代关环、构建四氢噻吩环；
- Four spots of proteins in gel were identified as flagellar filament cap, 2-phosphoglycerate dehydratase, 3,4-dihydroxy-2-butanone 4-phosphate sythase (DHBP synthase) and heat shock protein 33 homolog. 与结构性群体形成密切相关的蛋白质为鞭毛丝帽蛋白、2 磷酸甘油酸酯脱水酶、3,4 邻苯二酚 2 丁酮 4 磷酸盐合成酶和热休克蛋白 33同类物。
- An AB2 monomer and title polyester - amide polymer has been prepared based on tetrahydrophthahc anhydride and H -containing diol as raw materials. 以四氢苯酐和含氮二元醇为原料,合成了AB2型单体和超支化聚酯酰胺聚合物。
