肽一种自然或人工的合成物,包括二个或二个以上氨基酸,通过一个氨基酸的酸基和另一个的羧基结合而成。
Any of various natural or synthetic compounds containing two or more amino acids linked by the carboxyl group of one amino acid and the amino group of another.
化学修饰实验发现:巯基、胍基、氨基、羧基和吲哚基可能参与酶活性中心的组成。
Chemical modification studies showed that the sulfhydryl, guanido, amino, carboxyl and indolyl groups may participate in the active center of the enzyme.
绿液预处理和硫酸盐蒸煮工艺参数影响纸浆的羧基含量。
During green liquor pretreatment-kraft pulping process, both pretreatment and kraft cooking variables influence the carboxyl groups content of the pulp.
这一反应还伴随着羧基的迁移以及乳胶粒膨润、 溶胀和压缩的形态变化过程。
In the meanwhile, the various. morphology of the latex and the migration of the carboxyl group are also discussed.
将4个鼠源噬菌体抗体克隆和1个人源噬菌体抗体克隆偶联到羧基终止的硅片表面,制成分析型模型芯片。
A model analytical chip was prepared by coupling 4 phage antibody clones from mouse and 1 clone from human to the surface of carboxyl terminated silicon.
由于表面羧基含量的差异,接触法炭黑可以获得比炉法炭黑更高的接枝率。
The grafting mass percent of connect black is more than of furnace black because of difference in carboxyl group content.
用傅立叶红外光谱仪测定羧基含量。
Determine carboxyl content with Fourier infrared spectrum instrument.
另外,所有的氨基酸都拥有氨基和羧基(除了脯氨酸),一些氨基酸的R基能电离收藏。
In addition to the amino and carboxyl groups possessed by all amino acids(except proline), the R group of some amino acids can ionize.
针对上述情况,本论文较为系统地开展了表面含羧基和氨基的磁性高分子微球的制备及表征研究。
For the above problems, the preparation and characterization of magnetic composite polymer microsphere with carboxyl groups and amido groups are studied in this thesis.
含有一个或数个羧基的有机酸在工业上具有重要用途,尤其在化工、食品、医药工业中应用广泛。
Organic acids containing one or more carboxyl groups played an important role in industrial application, especially in chemical, pharmaceutical and food industries.
发现,钛酸四丁酯或草酸亚锡作为缩聚催化剂时,在整个高真空阶段羧基含量并不是一直增加的。
It is found that in the presence of butyl titanate or stannous oxalate as a polycondensation catalyst the carboxyl content is not always on the increase in all high vacuum stage.
初步研究了辐射剂量、剂量率对淀粉粘度的影响,测定了辐射降解淀粉中羧基的生成量,评价了淀粉辐照后的(?)
The effects of both irradiation dose and dose rate on starch's viscosity were studied, and the generated quantity of carboxyl in the irradiated starch was determined.
透明质酸锌是透明质酸的锌盐,通过锌离子与透明质酸钠羧基上的钠离子进行离子交换而制得。
Zinc hyaluronate is the zinc salt of hyaluronic acid, prepared by ion exchange which the sodium ions was substituted by zinc ions on carboxyl of sodium hyaluronate.
利用两步氧化法,首次将玉米淀粉改性为同时含羧基和醛基的氧化淀粉,为制革工业提供了一种新型的清洁化鞣剂。
The corn starch was modified into oxidized starch containing both carboxyl and aldehyde groups by chemical method, which provided a new clean tanning agent for leather industry.
在各个因素变化范围内,羧基含量均呈先上升后下降的趋势。
In each factor, carboxyl content within the range is increased and the trend.
结论EB病毒LMP1可活化端粒酶活性,这一功能与LMP1羧基端胞浆区,特别是其功能域ctar1和CTAR2密切相关。
Conclusion EBV LMP1 is able to activate telomerase and this function is related to the carboxyl terminus region of LMP1, specially CTAR1 domain and CTAR2 domain.
同时测定了炭黑表面羧基、酚羟基、内酯基等酸性含氧基团的含量。
The contents of carboxyl, phenol hydroxyl, and lactones groups on carbon black surface have been determined.
在这些配合物中,羧基氧、配位水分子和晶格水分子之间存在大量的氢键相互作用。
In these complexes, there are hydrogen bond reciprocity between carboxyl groups and crystal lattice water molecules.
结果SED的空间结构与其它肠毒素超抗原相似,具有两个结构域:氨基末端结构域和羧基末端结构域。
Results the three dimensional structure of sed, similar to that of other enterotoxin superantigens, was composed of two domains: amino terminal domain and carboxyl terminal domain.
采用电导滴定法测定了不同浆种的羧基含量,并提出了测定过程中需要注意的事项。
Carboxyl groups content of various pulp suspension were determined by conductivity titration method, detailed investigation was carried out, some points for attention in determination were suggested.
考察了氧化剂用量、催化剂用量、反应时间和水用量对氧化淀粉羧基含量的影响。
The effect of the amount of hydrogen-peroxide and catalyst, reaction time and amount of water on the carboxyl content was investigated.
本文合成了侧链上带有酰胺基、羧基、酯基和羟基的水溶性聚丙烯酸树脂。
A water soluble acrylic coatings with amide, carboxyl, ester and hydroxyl group on side-chain have been synthesized.
锆化合物可交联含有某些官能团,如羧基、羧基的聚合物。
Zirconium compounds can crosslink polymers which contain suitable functional groups, such as carboxyl and hydroxyl.
脱氧胆酸中羧基氧原子、羟基氧原子均与钇发生配位作用。
The oxygen atoms that coordinated with yttrium were offered by both carboxyl and hydroxyl groups of deoxycholic acid.
HA具有羟基、羧基和乙酰胺基等官能团,可通过交联、酯化、接枝、分子修饰和复合等方法进行改性。
Ha has functional groups such as hydroxyl, carboxyl and N-acetyl, therefore, it can be modified by cross-linking, esterification, graft, molecule modification and composition.
苯基、氰基、酯基、羧基在反应中不受影响。因此,这一聚合物催化剂特别适用于和芳基、腈基、羧基和酯基相连的双键的氢化。
Thus, this polymer catalyst is especially suited to the hydrogenation of the ethylenic double bonds which are linked to aromatic, cyano, carboxyl and ester groups.
在酸性介质中,含羧基乳胶粒子体系的致粘机理与普通硬球型乳胶粒子体系一致。
In the acid medium, the viscosity mechanism of the system of latex particles containing carboxyl is the same with that of the common hard sphere latex system.
目的观察羧基化氨基多糖药物抗胃溃疡的作用。
Objective: To observe the effect of carboxyl-amino-polysaccharide on the gastric ulcer.
红外分析表明大同煤中羧基含量很少,酚羟基含量较多。
We also found that Datong coal contains more phenolic hydroxyl and less carboxyl.
通过羧基型聚酯和甲基丙烯酸缩水甘油酯(GMA)反应合成了紫外光(UV)固化粉末涂料用聚酯丙烯酸酯树脂。
The polyester acrylate resin for UV-curable powder coatings is synthesized through the reaction of carboxyl-type polyester and glycidyl methacrylate (GMA).
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