活性中心

So, we can study and estimate the antioxidant capabilities of every kinds of alimental organism quantitatively through their distribution of the biopolymer active center elements.

由此我们就可以通过食疗型生物体生物高分子活性中心元素分布来定量的了解各种生物营养体的抗氧化能力，把群子统计参数作为判断抗氧化能力大小的标度之一，通过群子统计参数对其抗氧化性进行评价。

Biopolymer active center elements are the composition of the alimental organism and the primary inherent cause of catalysis and activation, their ingestion, accumulation, transportation and distribution have relation to the biological function of the organism, so we can predict the characteristics of the elemental distribution by the fourth statistical mechanics founded by Professor Jin and further study the biological function of the organism with diet therapy effect.

由于生物高分子活性中心元素是生物营养体的组成成分与催化激活的主要内在原因，其摄入，积累，运送与分布都与生物体的生物功能密切相关，所以可以通过金日光教授提出的第四统计力学——群子统计理论来考察其分布规律，进而考察、评价食疗型生物体的生物功能，从而为研究生物体的营养、药物功能提供新的理论依据，为诠释中国传统食疗学的相关理论打开新的思路。

And TOF of catalytic oxidation for styrene to benzaldehyde has increased by 100%～240% because of the addition of alkalic ion, which matches with the crown ring.

系统考查了冠醚环及其直径大小、结构类型、键连方式、键连部位和与活性中心的距离对配合物催化氧化性能的影响。

The model includes one β-trypsin, two amylamine molecules, four sulfates, one calcium, and 135 water molecules.

结果表明，正戊胺于环已烷中和β-牛胰蛋白酶有强结合作用，一个戊胺分子结合到酶活性中心；另一个结合在β-牛胰蛋白酶的表面，与也被结合的硫酸根形成氢键。

In aqueous solution no binding observed in crystal structure. In cyclohexane, one amylamine molecule is observed in the active site of trypsin and more sulfates are also found on enzyme surface, which are further proofs that electrostatic interaction are stronger in organic solvent.

在水溶液中，晶体结构难以观察到戊胺与牛胰酶的结合，在环己烷中，一个戊胺分子结合在胰酶的活性中心，同样酶表面观察到了更多的硫酸根，这些都进一步验证了有机溶剂中静电相互作用加强。

Objective To apply bacterial endotoxin active central lipid A as target to screening antiendotoxin herb fron liquid of fortytwo herbs by biosensor technology.

目的 以细菌内毒素活性中心类脂A为靶点，应用生物传感器技术，从42种中草药水煎液中筛选拮抗内毒素作用的中药。

In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.

为了发展一套实用的合成方法，我们首先制备於苯环上具有不同种取代基的苯乙醯胺，接著透过Bischler-Napieralski反应进行分子内合环，并利用钌金属对亚胺中间体进行不对称的还原反应，建立出产物中唯一的光学活性中心，最后再利用Heck反应连结两个苯环，就可以顺利得到具有光学选择性的阿朴吩类天然物。

Burning experiments,thermodesorption analysis,ESCA,SIMS and ESR studies,is showed that quinone/hydroquinone and/or aroxyl/phenol groups are the catalytically active cen- tres.

采用不同的分析技术，如燃烧实验、热解吸分析、电能谱、二次离子质谱和电子自旋共振的研究，表明醌/氢醌和芳氧基/苯酚基团是催化活性中心。

Three kinds of small molecular copper and zinc superoxide dismutase mimics were synthesized with N, N-bis (benzimidazol-2-ylmethyl) amine (N3), N, N-bis (benzimidazol-2-ylmethyl) methylamine(MN3) and N,N-bis (benzimidazol-2-ylmethyl) benzylamine(BN3) as ligands. The com-plexes were characterized by UV, IR and element analysis and the structures were proposed.

模拟铜一锌超氧化物歧化酶的活性中心，以二(2-苯并咪唑)丙烷为桥、二(2-苯并咪唑亚甲基)胺(N3)、二(2-苯并咪唑亚甲基)甲胺(MN3)及二(2-苯并咪唑亚甲基)苄胺(BN3)为配体合成了3种异双核的小分子模型化合物，并进行了紫外、红外表征及元素分析，推测了可能的结构。

The system exhibits favorable catalytic activity for the oxidation of benzylic and allylic alcohols, in spite of low activity observed for the oxidation of heterocyclic and aliphatic alcohols.

探讨了TEMPO-IL/CuCl催化体系的催化机理，铜离子是反应的活性中心。针对 TEMPO/CuCl 催化体系反应速度较慢的问题，研究了碱对 TEMPO/CuCl 体系的促进作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。