作用中心

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 structure of the compound 〓(1) consists of a pentanuclear molecule which is center-symmetric. One W atom is coordinated by four S atoms and two Cu atom. As expected, the Fe atoms are sandwiched between two staggered pentadiene rings. The most interesting aspect of the structure is that Fe-C-P-Cu-P-Cconstitutes a distorted hexagon and Fe-Cu-W-Cu-Fe is nearly in a line.

结构是以W原子为对称中心含有五个金属原子的线型结构，W原子与四个μ〓-S和两个Cu原子配位；Fe原子在两个戊二烯环中间形成一个三明治夹心结构；Fe〓-C〓-P〓-Cu〓-P〓-C〓-构成扭曲的六边形，由于两边1，1'-双二茂铁配体的作用导致Cu-S键的拉长。

Objective To evaluate the sensitivity of poly-static quantitative perimetry for the detection of visual field defect in open angle glaucoma.

目的 比较采用多点静态定量视野分析仪（Friedmann visual field analyser， FVFA）与中心平面视野屏检查视野在青光眼诊断中的作用。

Escherichia coli and many other microoganism synthesize aromatic amino acids through the condensation reaction between phospho enolpyruvate and erythro.

ppsA和tktA是芳香族氨基酸生物合成中心途径的两个关键酶基因，在大肠杆菌中，ppsA基因编码磷酸烯醇式丙酮酸合成酶A ，该酶催化丙酮酸合成磷酸烯醇式丙酮酸；tktA基因编码转酮酶A ，该酶在磷酸戊糖途径中生成 4 磷酸赤藓糖起主要作用。

The results show that the ponderomotive force of high-power microwave would affect the dispersion,make the distribution of microwave different from Bessel distribution,and drive the plasma to the region where the microwave field is lower.

结果表明高功率微波的有质动力将影响微波色散特性，使微波场强分布偏离Bessel分布，并对等离子体有排开作用，当场强足够大时可将波导中心处等离子体排空形成低密度通道。

PCL could be separated into anterolateral bundle and posteromedial bundle and there were ＂functional bundles＂ in each of them, which guaranteed the rearward stability of tibia in normal range of motion of the knee.

前外侧束与后内侧束中均存在&功能束&，两者的&功能束&联合作用可基本维持膝关节活动范围内胫骨的后向稳定性，&功能束&止点与两束止点中心不吻合。

According to the Centers for Disease Control and Prevention, fluoride's "predominant effect is posteruptive and topical".

据美国疾病控制和预防中心，氟化物的&主要作用是posteruptive和专题&。

Acetate groups charge ZnO nanocrystals negatively and passivate the surfaces,reducing the surface defects and visible emission centers. Resultantly, the increase of acetategroups lead to the quench of visible emission and improvement of photoluminescenceproperties. At appropriate concentrations, the hydroxide groups mainly passivate the surfaceand improve the photoluminescence properties.

研究发现，氢氧化锂/醋酸锌的比值对胶体氧化锌量子点的发光性质有重要影响；醋酸根基团通过使氧化锌粒子带负电荷并钝化其表面，使得氧化锌纳米点的表面缺陷和可见发射中心大大减少，因此醋酸根浓度的增大导致了可见发光的淬灭和发光性质的增强；氢氧根基团在中等浓度时主要起钝化氧化锌表面的作用，使产物的发光性质得到改善。

In fact, the Japanese culture has not only factors that lead to sadomasochism, but also has creative results before the western impact.

在&西方中心&的习惯思维下，看到的往往是西方文学对东方文学的影响，而忽略了东方民族文化本身的作用。

Through unify management of the work such as transportation of the commodity stogy, load, deliver, order and information handle, and logistics center can increase the stock velocity, accelerate the commodity currency, and reduce cost.

物流配送中心在现代商品流通中的作用极大，它通过对商品的运输、保管、装卸、搬运、流通加上、配送、订单处理和信息处理等上作的统一管理，可以提高库存周转率，加速商品流通，降低成本。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。