配基

X-ray single crystal diffraction study reveals that the Zn atom is five-coordinated, Furthermore, a 2D superamolecular network is constructed via the tetracarboxylate bridged binuclear of Zinc SBU ,and the amino substituent results in the formation of hydrophilic 2D structure of the title complex.

该配合物中，锌离子为5配位，2个Zn原子和4个羧基形成的双核锌结构单元，进而形成二维方格式平面结构，氨基取代基导致配合物具有亲水性。

A readily available β-sulfonamide alcohol-titanium complex was found to be effective on promoting the asymmetric addition reaction of an alkynylzinc reagent to unactivated simple ketones under very mild conditions.

为此我们合成了一系列β-磺酰胺基醇，并将其作为配体与Ti4一起催化炔基锌对简单非活化酮的不对称加成反应。

By whole employee strive ten year,The Dimensions at enlarge with corporation, technology in process of manufacture,Have polyester、 radix-cloth、soil-cloth、leather-cloth、fine-cloth and layout ester rank big manufacture,user with extend all over in 30 city accede to international agorae.

经全体员工十余年的不懈努力，公司规模日渐扩大，产品科技含量逐年提高，现已有聚酯油毡基布、土工布、皮革基布、玻纤布及配套型树酯等几大系列产品，用户以遍及全国近30个省、地、市并已成功打入国际市场。

The 3,4-dimethoxybenzene was nitrated by mixed acid of HNO3-H2SO4 under the reaction temperature of 0~5℃. 3,4-dimethoxynitroben-zene was obtained by filtration, and its yield reached over 97%.

在0~5℃低温条件下，以硝酸和硫酸按比例配成的混酸进行硝化，反应结束后过滤得到3，4-二甲氧基硝基苯，该步反应的收率有97%。

After employing many axle bush experts, we not only successively developed the entire automobile stop-pushing bush, which obtains the National New Products Certification and the complete independent intellectual property right, but also successively developed the materials by burning and the complete independent intellectual property right, but also successively developed the materials by burning and combining copper and lead powder, with quick precise electroplated nickel layer, three electroplated elements,and the electroplating technology of tin layer.

公司承诺&以人为本，求真务&的发展理念，不懈追求上规模，上档次，上质量，先后引进多名轴瓦业高级工程师，研制开发了享有自由知识产权的整体式汽车止推瓦，获国家新产品证书；成功开发了铜铅粉末烧结合金材料，并配以快速精密电镀镍栅层、铅锡铜电镀三元及闪锡层电镀等新科技，最近研制开发出具有国际领先的轴瓦&四元&电镀技术，形成数条铜基、铅基轴瓦生产线。

The results indicated that Eu3+ mainly interacts with the carbonyl oxygen in the amino acid residues of the peptide chain of CAT because rare earth ions are easy to coordinate with O, causing the change in the peptide conformation and in turn the change in the structure of the heme group of CAT.

结果表明，由于稀土离子易与O键合，因此，Eu3+主要与CAT肽链上的氨基酸残基中的羰基氧配位，引起肽链构象的变化，而构象的变化又会诱导CAT中的血红素结构的变化。

In the reduction of 1, 6-diphenyl-1, 6-hexanedione catalyzed by the bis-squaryl proline, good enantioselectivities were obtained, the ee values were up to 90%.We also studied the asymmetric borane reduction of prochiral ketone catalyzed by a series of thiazolidine ligands.

本文考察了由L-半胱氨酸衍生的2-位无取代基的以及2-位芳基取代的噻唑烷酸及醇配体在前手性酮的不对称还原反应中的催化性能。

First, the significant of co-factor InsP6 and center water in the mechanism of auxins are explored by docking; second, the experiments that compared with the docking rusults of two situations involving fully rigid and selective flexible of active residue of the receptor TIR1 illuminate that selective flexibility docking by AutoDock4 reports more rational results, so that, AutoDock4 dockings are implemented with TIR1-Auxins; third, AutoDock4 docking by TIR1-Auxins-Aux/IAA illuminates that auxin as a molecular glue enhances the interaction between TIR1 receptor and Aux/IAA substrate by the weak interactions, such as hydrogen bond and hydrophobic interaction, furthermore, the weak interactions between receptor protein and ligands greatly influence on auxin activity of auxin ligands.

首先， 通过分子对接计算研究辅酶InsP6以及中心水分子在生长素反应中的重要作用；其次，比较受体大分子完全刚性以及活性残基部分柔性的两种情况下的分子对接结果，说明AutoDock4实现了受体分子活性残基的部分柔性而使对接结果更加合理，进而使用AutoDock4方法对TIR1-Auxins体系进行对接计算；最后，对TIR1-Auxins-Aux/IAA体系进行分子对接计算，结果表明，生长素配体分子作为&分子胶水&直接与受体大分子TIR1以及底物多肽Aux/IAA形成强的弱相互作用，如氢键作用、疏水相互作用，促进了受体TIR1与Aux/IAA底物之间的结合，进而说明氢键作用和疏水相互作用等弱相互作用对于生长素分子的活性具有很大的影响。

The experimental results indicate that friction coefficient of the Cu-MoS2 powder met...

研究结果表明：在有电流条件下，加入MoS2可显著降低铜基粉末冶金/铬青铜配副的摩擦因数和铜基粉末冶金材料磨损率，10%和20%MoS2含量的粉末冶金试样的磨损率相差不显著，20%MoS2含量的摩擦因数在高速时有所增加。

The results showed that the POV of hemp seed oil was affected remarkably by temperature and time, and the effect of temperature was greater than that of time. The TBHQ had good antioxidation ability to hemp seed oil. TBHQ or BHA with isoascorbic acid or critic acid exhibited great antioxidation ability, the synergistic effect on the oil of critic acid was better than that of isoascorbic acid. When 0.02% TBHQ with 0.005% BHA and 0.01% critic acid or with 0.005%BHA and 0.01% isoascorbic acid was used in the oil, the shelf life of the oil could be prolonged from 4 months to 11~13 months at 20℃.

结果表明，温度、时间对汉麻籽油的自氧化过程有显著影响，且温度的影响更明显；叔丁基对苯二酚对汉麻籽油具有较好的抗氧化性能，柠檬酸和异Vc对TBHQ与丁基羟基茴香醚复配的复合抗氧化剂均表现出较强的协同抗氧化性能，且柠檬酸的协同抗氧化性优于异Vc；添加0.02%TBHQ+0.005%BHA+0.01%柠檬酸或0.02%TBHQ+0.005%BHA+0.01%异Vc复合抗氧化剂，可使汉麻籽油在20℃下的预贮藏时间从4个月延长至11~13个月。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。