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Benzoyl chloride was treated with potassium selenocyanate in dichioromethane by using polyethylene glycal-400 as the solid-liquid phase transfer catalyst to yield the corresponding benzoyl isoselenocyanate. This intermediate did not need to be isolated and directly reacted with arylamines, affording the N-benzoyl-N'-arylselenoureas 2a~2p. These compounds were characterized by IR, 1H NMR spectra and elemental analysis and the single crystal structure of 2k has been confirmed by X-ray crystallographic analysis.

以PEG-400为固液相转移催化剂,通过苯甲酰氯与硒氰酸钾反应合成了中间体苯甲酰基异硒氰酸酯,该中间体不需分离,直接与芳胺反应,得到N-苯甲酰基-N'-芳基硒脲(2a~2p),这些化合物用1H NMR,IR及元素分析进行了表徵,并用X射线单晶衍射确定了化合物2k的单晶结构。

In order to express he Opening Reading Frame fragment of Banana bunchy top virus Hainan isolateDNA2 correctly ,a pair of primers were designed in accordance with the reported BBTV-HN DNA2 gene sequence.

本文根据已报道的香蕉束顶病毒海南分离物(Banana bunchy top virus BBTV-HN)BBTV DNA2的基因序列,设计一对引物,以海南地区表现束顶病症状的香蕉组织总DNA为模板,利用PCR方法克隆了DNA2编码区,将其插入到原核表达载体pGEX-6p-1谷胱苷肽-S-转移酶基因下游。

At last, it uses regional developing economics and regional innovation theory to puts forward the strategic of adjusting industrial structure. The total train of thought is as follow. First, strengthening the Pearl River Delta, building the Pearl River Delta into the main electronic information product manufacturing center, national software industry center and information technology application center. Then extending to Hong Kong and Macro to make up the weakness of the Pearl River Delta. To the aspect of fund and information, it must extend to under-developing regions, draw up individual chain, transfer some industrial chain that losing strength to under-developing regions.

再综合运用了发展经济学、区域创新理论,提出以珠三角为突破口,着眼于珠三角经济区信息产业的综合优势,打破地区界限,进行产业结构调整,总的思路是:首先在继续做大做强珠三角地区,把珠三角建成国际主要的电子信息产品制造业基地、国内重要的软件产业基地和国内先进的信息技术推广应用基地的基础上,外延港澳地区,增大珠三角,弥补珠三角的劣势:资金和信息方面,内延欠发达地区,制定各地区的个性化产业链,把部分丧失优势的产业链转移到欠发达地区。

Enterprises find that customers are final deciders of the enterprise activity,such as production and service. Enterprises business focuses on customer, rather than product design and production.

企业的经营观念核心开始从产品、生产导向逐步向以客户为中心的模式转移,客户的竞争成了服务的竞争,顾客的地位被提高到了前所未有的高度,研究汽车营销从交易营销到关系营销,如何提升客户满意度、培养忠诚客户和开发具有价值的潜在客户成了当务之急,于是汽车行业的客户关系管理也就应运而生。

This paper begins with building basic frame of technology transfer via FDI for developing countries and areas and investigates the government role in this frame.

以构建后发国家或地区通过引进外资进行技术转移的基本框架为开端,探讨在这一框架结构中政府的作用。

Intend to use the most advanced technologies in building the 20,000 t/y propylene oxide plant, hydrogen peroxide and propylene as raw materials. Process control using phase transfer catalyst reaction of propylene oxide technology, non-polluting, non-joint products.

拟采用国内先进技术建设2万吨/年环氧丙烷生产装置,以双氧水和丙烯为主要原料,生产工艺采用反应控制相转移催化丙烯氧化技术,无污染、无联产品。

Although in the course of the transiting, many causes as many-lay participants, marketing exchange means, over-intervene of governments and law norms cannot play the role completely will affect the effectiveness of control rights transaction, we cannot deny that the effectiveness of control in China has played the role which offers the experience standing for our study of Chinese market for corporate control.

2000年之后,随着以市场化、规范化为目标的法律制度建设步伐加快,在&国退民进&的国民经济战略布局调整的宏观政策推动下,上市公司控制权转移承载了股权制度改革的使命,控制权交易也出现新的特点,表现为:具有行业导向性和实业背景的战略性并购初具规模;自然人、外资、民营企业等多元主体积极参与;竞争性行业的管理层收购强势起步;政府干预从直接走向间接。

The methods of field experiment, simulation experiment and analysis were used to study the effects of the different measures (i.e., mulching, fertilization and irrigation) to control the supply of water and nutrients on nutrient uptakes, accumulations and translocation of winter wheat; and their relationship with the accumulations of dry matter and water use efficiency were also analyzed.

因此,本研究以冬小麦为供试作物,采用田间试验、模拟试验和室内分析等相结合的研究方法,探讨了不同水肥调控技术措施对小麦生长发育过程中养分吸收、累积和转移等的效应,及其与干物质累积、水分利用效率等间的关系,并从土壤养分和水分的动态变化、根系生长和生理代谢指标的测定3个方面分析了其机理。

Lubricatiing oil containing sheet graphite nanoparticles was prepared by means phase-transport method .

采用相转移工艺,以水性石墨滤饼、150SN基础油为原料制备了纳米石墨润滑油,并用Thermo Haake 流变仪考察了气流变性质。

In our research, through derivatization of stable calix[4]pyrroles, active substituting units were jointed on the calixpyrrolic skelecton. After acylamide and free radical transfer reaction, the preparation of new calix[4]pyrrole-bonded stationary phases were fulfilled. the separation abilities of them to inorganic and organic anions and medicines were exploited and new analytical methods were established. The separation mechanisms were discussed. At the same time, through using calix[4]pyrroles as additives in CZE to influence the electrophoresis of inorganic anions, the recognition mechanisms and influencing factors in supramolecular chemistry were also studied.

本项目以新型杯吡咯大环化合物分子识别化学研究为基础,设计合成了含活泼取代基的官能化杯[4]吡咯化合物,通过酰胺化反应和原位自由基链转移反应制备了新型的杯[4]吡咯色谱固定相,系统研究了具有阴离子识别功能的杯[4]吡咯大环化合物作为离子色谱的分离介质对无机、有机离子型化合物和药物分子的色谱分离性能,建立了新的分析方法,对分离机理进行了探索和验证;同时将杯[4]吡咯化合物用作毛细管电泳流动相添加剂,利用其对无机阴离子电泳行为的影响探讨超分子化学中分子识别的机理和影响因素。

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歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

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