配体

A ligand-gated association between cytoplasmic domains of UNC5 and DCC family receptors converts netrin-induced growth cone attraction to repulsion.

一个在UNC5 和DCC家族受体细胞质领域间的配体门控联合把netrin诱导的发育锥体细胞吸引力转变为了排斥力〉《细胞》第97卷，(1999)： 927-41页。

The structural characteristics of the ligand of the chiral Schiff base are that the ligand has phenol hydroxyl, alcoholic hydroxyl and an imine group, one to three bromine atoms are provided on the framework of double benzene nucleus, and chiral carbon is connected with the nitrogen atom of imine.

手性西佛碱配体的结构特征为含有酚羟基、醇羟基和亚胺基团，在萘环骨架上带有一至三个溴原子，手性碳与亚胺的氮原子相连。

QN 〓PHAL,〓PHAL and 〓PHAL were quaternized by refluxing with benzyl bromide to give ligands 8, 9 and 10 respectively. 2. The chiral ligands were applied to the AD reaction of olefins with NMO as co-oxidant and PEG (400 MW) or PF〓 as reaction media.

以奎宁和奎尼定为原料分别与1，4-二氯-2，3-二氮杂萘反应制备〓PHAL和〓PHAL，然后通过〓PHAL、〓PHAL及〓PHAL与苄基溴的季铵化反应制备单季铵盐手性配体8、9和10。

Study on color retention process of dried litchi;2. Technology of litchi rind color retention during hot air drying of litchi fruit;3. In this study we obtain a hig h effect color retention ag ent on studying effects of several sing le or complex color retention ag ents.

本文通过对几种护色剂单体及复配体对肉制品的护色效果研究，获得了一种高效的复合护色剂，它可以使低温肉制品在存储一个月后仍保留有一定的红色，外观尚可。

Meanwhile, more ligands were tethered onto the comb-like PEG modified surface with a great amount of reactive end groups, which increased cell proliferation. The glycocalyx mimicking surface designed with comb-shaped PEG end-tethered by RGD peptide was proved to present non-specific resistance and excellent cyto-compatibility simultaneously.

此外， CPEG比LPEG具有更多的活性反应基团，用PEG末端活性的醛基固定整合素配体多肽片段RGD，可有效地诱导材料表面的内皮细胞化，改善材料的细胞相容性。

In-situ synthesis process was used to prepare copper nanoparticles and coppernanoparticles-polyethylene glycol oil solution by reduction of copper acetate by glycol in polyethylene glycol containing amido ligand as dispersant.

采用原位合成法以聚乙二醇400作为反应介质，以氢氧化钠和氨基配体作为分散剂，用乙二醇还原六水合乙酸铜制备出纳米Cu粉和纳米Cu聚乙二醇溶液，用X射线衍射仪和透射电子显微镜表征其结构，在四球摩擦磨损试验机上评价了含不同质量分数纳米铜粉的聚乙二醇溶液的摩擦磨损性能，并与分散剂进行对比。

The catalytic activities of other rare earth metal salts with different ligands were tested.

考察了带有不同配体的稀土金属催化剂对反应的影响。

Li1.05Mn2O4 samples were synthesized from aqueous solutions of metal acetates containing citric acid as a chelating agent by a sol-gel method.

选用金属醋酸盐和柠檬酸配体，采用溶胶－凝胶法合成出锂离子电池正极材料Li1.05Mn2O4。

The aim of this study is to investigate the relationship between PPAR-γ expression and clinicopathological characteristics of lung cancer, and to discuss the effect of PPAR-γ activators on lung cancer growth and the mechanisms of apoptosis induction for lung cancer.

本研究的目的是分析PPAR-γ的表达与肺癌临床病理特征之间的关系，并探讨PPAR-γ的配体对肺癌细胞生长的影响及其诱导凋亡的机制。

Herein we mainly discuss the asymmetric addition of terminal alkynes to aldehydes and ketones using commercially available chiral pool and their derivatives.

这篇论文论述了商业化的手性源及其衍生物配体催化的末端炔对醛和酮的不对称加成反应的研究。

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。