配体

Recent advances in the application of chiral nitrogen-containing ligands in asymmetric addition reactions to imines with organolithium reagents are reviewed.

综述了近10余年来手性含氮配体在有机锂试剂对亚胺不对称加成反应中应用的研究进展。

Research progresses in the asymmetric addition of organozinc reagent s to imines in the recent decade are reviewed according to the kinds of chiral ligands.

亚胺的催化不对称加成反应是近年来不对称催化反应中的热点研究领域，从手性配体类型的角度总结了近10余年来有机锌试剂在亚胺不对称加成反应中的应用进展。

Both OPG and RANKL are important for the regulation of osteoclastic function.

护骨素/核转录因子κB受体活化素配体在破骨功能调控中起重要作用。

The biochemistry and image analyzing were used to investigate the effects of the PDGF-AA at high concentration on the osteoclastic bone resorption in the osteoblast-osteoclast co-culture system.

在高浓度PDGF-AA的作用下，应用生化检查和图象分析技术，检测PDGF-AA对成骨细胞-破骨细胞共育体系中破骨细胞骨吸收功能的影响；应用免疫荧光检测破骨细胞合成抗酒石酸酸性磷酸酶的变化；应用免疫组化和RT-PCR技术检测骨保护素配体的表达。

Therefore, RANKL, RANK, and OPG provide a ligand/receptor/soluble receptor system for the molecular basis of osteoclastic regulation by osteoblasts.

这样，RANKL，RANK以及OPG构成了一种配体／受体／可溶性受体调控系统，成为成骨细胞调控破骨细胞的分子基础。

The molecular structures of these tuned phenanthroline derivatives with triphenylamine and oxadiazole groups and their europium complexes were characterized by element analysis and 1H NMR.

合成得到的功能化邻菲罗啉中性配体及其铕配合物的分子结构通过元素分析、核磁共振波谱进行了表征。

The alkali metal complexes containing oxadiazole ligand were synthesized and we found that the emission color was dependent on the central ion.

合成了含有噁二唑配体的碱金属配合物MOXD。我们发现配合物的发光颜色取决于中心金属离子，LiOXD是一个优良的蓝光材料，半峰宽是65nm，发射峰位在478nm，它也可以作为界面材料使用，起到和LiF相同的作用，即改善电子注入。

The UV absorption and photoluminescence properties of phenanthroline derivatives with triphenylamine and oxadiazole groups and their europium complexes were investigated. These europium complexes display intense UV absorption and photoluminescence properties. The PL results from emission of Eu3+ ion in their pure thin films. A maximum PL wavelength is 612 nm and a full width at half maximum is from 9 nm to 15 nm for the PL of these europium complexes, respectively.

2研究了三芳胺和噁二唑功能化的邻菲罗啉中性配体及其铕配合物的紫外吸收和光致发光性能，研究结果表明，这类新型的铕配合物具有强烈的紫外吸收和光致发光性能，铕配合物在固体薄膜状态下都能发射出强烈的铕离子特征峰，其最大发射波长为612 nm，半峰宽为9～15 nm。

Phenanthroline ligand was tuned by incorporating triphenylamine group with hole-transporting nature and oxadiazole groups with electron-transporting nature into phenanthroline, which can help their europium complexes to have improved carrier-transporting property and increased luminous efficiency.

研究的主要内容有： 1通过引入三芳胺空穴传输单元和噁二唑电子传输单元，对邻菲罗啉中性配体进行分子修饰，从而改善它的铕配合物的载流子传输性能，提高铕配合物的发光效率。

The structure analysis indicates that the reverse symmetry ligand H4LB molecules are linked into a 2D supermolecular network by two types of hydrogen bonds. One type occurs between the oxalamide oxygen group and the phenol hydroxyl qroup of the nearest molecule with d=2.906(2) and ∠O-H…O=151.8°. The other type is between the oxalamide nitrogen group and the oxalamide oxygen group of anther molecule with d=2.849(2),∠N-H…O=158.7°.

晶体结构研究表明配体H4L为顺式桥联分子，晶体中存在两种氢键，一种是草酰胺基团的O原子与苯环上的酚羟基形成O-H…O氢键[d=2.906(2)，∠O-H…O=151.8°]；另一种是草酰胺基团的氨基与相邻草酰胺基上的O原子形成N-H…O氢键[d=2.849(2)，∠N-H…O=158.7°]，通过上述两种氢键将化合物H4LB连接成二维网络结构。

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。