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A serological survey on tetanus antibody level was carried out. Serum samples from 346 women of 18-38 years old living in Beijing were tested with indirect hemagglutination.

为了解在北京市居住的育龄期妇女破伤风抗体的水平，在1998年采用间接血凝试验检测了346名在北京市居住的育龄期妇女破伤风抗体。

Using modern biology research technique and means,plasmid extract and agarose gel electrophoresis of molecular biology level explore test were carried out for coal with not coal department the hereditary property of Thiobacillus ferrooxidans.

利用现代生物学研究方法和手段，对煤系与非煤系氧化亚铁硫杆菌的遗传特性进行了质粒抽提和琼脂糖凝胶电泳等分子生物学水平的基础性探索试验，对于质粒在硫杆菌中普遍存在的观点提出了质疑。

In this dissertation, we optimized the thinkness of each layer of TFEL devices using the layered optimization method to obtain ZnS: Ce〓 TFEL devices. Accoding to the energy level structure of Ce〓, two criteria for distinguishing the EL of Ce〓 were found out, from which it was conduded that the TFEL of ZnS: Ce〓 comes from 5d→4f transition of Ce〓. The measurement of brightness waveform showed that the TFEL of ZnS: Ce〓 was the luminescence from independent centers. and there were the field induced-delocalization in this process anf it〓s the cause of low TFEL efficiency of ZnS: Ce〓. In this dissertation, different influence factors on TFEL of ZnS: Ce〓 were sdudied. The influence of different host lattice is different: The blue/green ratio of ZnS: Ce〓 in hexagonal system of ZnS is larger than that in cubic system of ZnS, and the TFEL peaks in hexagonal system of ZnS moves toward longer wavelength compared with that in cubic system of ZnS. The adding buffer layer was used in this stage. The solubility of Ce〓 in ZnS was small and it was another limit to TFEL brightness of ZnS: Ce〓 device. The solubility of Ce〓 increased ten times when using Li ions as flux, so that the TFEL brightness of ZnS: Ce〓 was enhanced. It was found that the appearing of ZnO in active layer improves the TFEL of ZnS: Ce〓: the brightness and the wave range of ZnS: Ce〓TFEL were enhanced.

本文采用TFEL的分层优化方案，优化组合了各膜层厚度，选择最佳制备条件，得到了ZnS：Ce〓的TFEL；根据Ce〓的能级结构，找到了判别Ce〓的EL的两个简单依据，并据此断定ZnS：Ce〓的TFEL的两个发射峰分别属于Ce〓的〓和〓跃迁；亮度波形测量表明ZnS：Ce〓的TFEL属于分立中心发光，分析认为在此过程中存在着较严重的场致离化，这也是ZnS：Ce〓的TFEL效率较低的一个原因；本文考查了影响ZnS：Ce〓的TFEL的各种因素，发现：基质的晶体结构对ZnS：Ce〓的TFEL有所影响，在六角相ZnS中Ce〓的TFEL优于立方相ZnS中Ce〓的TFEL：发射峰的蓝-绿比相对较大，且光谱向短波方向移动，在此项研究中本文采用了在发光层前增镀过渡层的办法，过渡层为六角晶相的ZnO；限制ZnS：Ce〓的TFEL器件亮度的一个原因是Ce〓在ZnS中的溶解度低，本文用Li离子作助溶剂增大了Ce〓的溶解度，增大幅度为一个量级，并且ZnS：Ce〓的TFEL亮度明显提高；从ZnS：Ce〓的TFEL光谱来看ZnS：Ce〓的TFEL波长覆盖范围较小，亮度也不高，达不到做为白色TFEL材料的要求，需要寻找新的白色TFEL材料；在研究ZnS：Ce〓的TFEL中还发现：发光层中ZnO的出现有利于ZnS：Ce〓的TFEL：发射峰变宽、亮度增大。

This text produces the different meaning of enterprise social responsibility ever appeared,builds hierarchical enterprise social responsibility classification model,analysis the rationality of it,and points out the enterprise social responsibility level that some enterprises should pay attention to.

本文介绍了历史上曾出现的各种企业社会责任的含义，建立了企业社会责任分级模型，分析了模型的合理性，并指出了一些企业应重视的社会责任层次。

Undertake through inviting senior lecturer ' with buy the home to face interview to sentence skill ' groom, international of help supplier understanding buys the home to purchase be used to with the negotiation, do sufficient homework to win order ", moustache of presiding operation official discloses web of a small bay in a river of a small bay in a river willingly, regard net of a small bay in a river of a small bay in a river as distinctive service form,"Buy the home to meet meeting " since was being rolled out last year oneself, hold in the many industries such as hardware, furniture, lamps and lanterns early or late, overseas is bought good public praise was won in the home and domestic supplier,"Because buyers and sellers all is to the high level of power to make decisions goes into action personally, the sale means of this kind of 0 distances reduced commerce risk and cost greatly, lead and its clinch a deal amount is very considerable.

通过邀请资深讲师进行'与买家面对面谈判技巧'的培训，帮助供给商了解国际买家采购与谈判习惯，为赢得订单做足功课"，沱沱网首席运营官胡欣然透露，作为沱沱网独特的服务形式，"买家见面会"自去年推出以来，先后在五金、家具、灯具等多个行业举行，在海外买家和国内供给商中赢得了良好的口碑，"由于买卖双方均是有决定权的高层亲自出马，这种零距离的销售方式大大降低了贸易风险和成本，其成交率和成交金额十分可观。

He will not be playing the whole season, but if I get 25 games out of him at the level we saw [in the 3-1 victory over Tottenham Hotspur] on Saturday, I will be delighted at that.

他不会打满整个赛季，但如果他能为我打25场3-1战胜热刺那样比赛的话我就很高兴了。

If they are accumulated to a considerable level, elimination of these ions can be carried out by an addition of strong reducing agent such as hydrazine.

如果他们累积到相当大的水平，要除去这些离子是可以透过增添像联氨这样强的还原剂来完成。

Theoretical investigation of the solvent effects on the mechanism of the reaction of pentafulvenone with hydrocyanic acid to produce the main product of acid of type b was carried out at B3LYP/6-311+G** level via the conductor-like polarizable continuum model.

在B3LYP/6-311+G**计算水平上，采用导体极化连续模型研究了溶剂化效应对6-亚甲基环戊二烯酮与HCN反应生成主要产物b类酸的反应机理的影响。

Theoretical investigation of the solvent effects on the mechanism of the reaction of pentafulvenone with hydrocyanic acid to produce the main product of acid of type b was carried out at B3LYP/6-311+G(superscript **) level via the conductor-like polarizable continuum model.

在B3LYP/6-311+G计算水平上，采用导体极化连续模型研究了溶剂化效应对6-亚甲基环戊二烯酮与HCN反应生成主要产物b类酸的反应机理的影响。

The company invests mount a horse the project of form a complete set of cooking of defer of 1 million T hydrogenation of 800 thousand T refines and 30 thousand T is sulfureous reclaim project, quality of farther promotion product, reclaim effectively the 2 oxidation sulfur in waste gas, have major economic benefits and social benefit; to invested many yuan 6000 to build two dry gas to make hydrogenous device, make waste gas reclaims rate achieved 95%, reduced the discharge capacity of waste gas substantially, reduce; of the cost that make hydrogen to be in greatly at the same time more than heat, beyond pressure, of more than gas used a respect integratedly to carry out 22 technical reformation, make enterprise ton the banner level that oily treatment specific power consumption reached industry of domestic person of the same trade.

公司投资上马了100万t延迟焦化的配套项目80万t加氢精制和3万t硫磺回收项目，将进一步提升产品质量，有效回收废气中的二氧化硫，具有重大的经济效益和社会效益；投资6000多万元建设了两套干气制氢装置，使废气回收率达到了95%，大幅度降低了废气的排放量，同时大大降低制氢成本；在余热、余压、余气的综合利用方面实施了22项技术改造，使企业吨油加工能耗达到了国内同行业的领先水平。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。