来源

Their structures were characterized by IR, 1H NMR, of which 4-chloro- 2-methyl-7-(2-bromoethoxy) isoflavone, 2, 4\'-dimethyl-7-(2-bromo-ethoxy)isoflavone and 2-methyl-7-(2-bromoethoxy) isoflavone are rarely reported so far.4\'-chloro-2-methyl-7-(3-bromopropoxy)isoflavone, 2, 4\'-dimethyl-7-(3-bromo- propoxy) isoflavone, 2-methyl-7-(3-bromopropoxy) isoflavone, 4\'-methoxy-2-methyl-7-(3-bromopropoxy) isoflavone and 4\'-hydroxy-2-methyl-7-(3-bromopropoxy) isoflavone were gained by reacting 7-hydroxy-2-methyl isoflavone derivatives with 1, 3-dibromo- propane, respectively.

第三章(来源：73ABC论文网www.abclunwen.com)在丙酮溶液中以K_2CO_3为碱，使溴乙氧基异黄酮和溴丙氧基异黄酮与咪唑偶合，以较高的产率合成出10种目标化合物：2-甲基-4′-氯-7-2-(1-咪唑基乙氧基异黄酮、2，4′-二甲基-7-2-(1-咪唑基乙氧基异黄酮、2-甲基-7-2-(1-咪唑基乙氧基异黄酮、2-甲基-4′-甲氧基-7-2-(1-咪唑基乙氧基异黄酮、2-甲基-4′-羟基-7-2-(1-咪唑基乙氧基异黄酮、2-甲基-4′-氯-7-3-(1-咪唑基丙氧基异黄酮、2，4′-二甲基-7-3-(1-咪唑基丙氧基异黄酮、2-甲基-7-3-(1-咪唑基丙氧基异黄酮、2-甲基-4′-甲氧基-7-3-(1-咪唑基丙氧基异黄酮、2-甲基-4′-羟基-7-3-(1-咪唑基丙氧基异黄酮，经IR、~1H NMR、~(13)C NMR、元素分析等对其结构进行了表征，10种目标产物均未见文(来源：ABC论文cccccc网www.abclunwen.com)献报道。

Based on our results, we believe that adipose-derived adult stem cells can be a cell source for stromal regeneration and repopulation in diseased corneas.

以我们研究结果为基础，我们相信脂肪来源的成人干细胞能成为患病角膜的再生和增殖的细胞来源。

Including rescan the relationship between the right and the law, the right and civilian, the right and the duty, strengthen all kinds of the matched system construction, perfect the systematism construction of the official accountability system, and put forward the specific step.

包括重新审视权与法、权与民、权与责的关系，加强问责制(来源：ABc5C论文网www.abclunwen.com)的各种配套制度建设，完善领导干部问责制的法律化体系化建设，并提出了具体的完善措施。来源：cb9bAb9BC论文网www.abclunwen.com

The metal elements of the volcanic-hosted massive sulfide deposit have two sources, the copper and zinc are derived from rhyolitic magmas whereas the lead are probably related to old sediments overlying the rhyolites.(4) It is suggested here that the volcanic rocks hosting massive sulfide deposit in the north Qilian orogen, which are previously considered as a bimodal suite of Neo-proterozoic to middle Cambrian age in a continental rift, are virtually related to subduction magmatism in Ordovician age, and there might have no continental rift magmatism of Neo-proterozoic to middle Cambrian in the north Qilian.

Th/Ta比高(5.0～11.7)，εNd为较大的负值(-2.6～-8.4)，流纹岩的形成可能是两个端元组分混合的过程、或是上地壳混染的结果，形成在活动陆缘环境；(3)北祁连块状硫化物矿床成矿金属物质具有两种来源，Cu、Zn等来源于流纹岩，而Pb的来源可能与古老沉积物有关；(4)本文认为，前人厘定的北祁连新元古代-中寒武纪赋存块状硫化物矿床的大陆裂谷双峰式火山岩应是与俯冲作用有关的奥陶纪火山岩，说明北祁连可能不存在新元古代-中寒武纪的大陆裂谷活动。

Most ritual magic and satanistic groups trace their origins to these sources.

最祭祀魔术和satanistic组追查其来源，以这些来源。

It was showed that the growth speed of hypha, sclerotinia production and the pathogenicity of strains had little relation with host and geographical location. The ability of oxalic acid production of strains had positive relation with the pathogenicity. In order to study the nutrition aptness, 8 kinds of culture mediums were tested and the result showed that S.

sclerotinia不同菌株菌丝的生长速度、菌核产量、致病力与其地理来源和寄主来源关系不大，对12个代表菌株的草酸产生能力的测定表明，菌株的草酸产生能力和病菌的致病性基本呈正相关，致病力较强的菌株草酸产生能力较强；采用8种培养基对代表菌株营养条件进行了研究，结果表明核盘菌S。

First, the development directions of the academic disciplines should be further defined, and the scientific and rational development planning should be made; Second, the disciplines\' echelon talents , especially the young or middle-aged talents, should be brought up strengtheningly;Third, the clinical research ,especially high-level clinical research , should be enhanced; Fourth, the practical incentive and restriction mechanisms should be established; Fifth, the government should increase investment to the desciplines, and concentrate limited funds to develop preponderant disciplines.

政策建议：第一，进一步明确学科发展方向，制定科学合理的学科发展规划。第二，加强学科人才梯队建设，特别要加强中青年人才(来源：a5a5ABc1C论文网www.abclunwen.com)的培养。第三，加强临床科研，特别是高层次临床科研。第四，建立切实可行的激励约束机制。第五，增加学科投入，集中有限的资金发展优势学科。来源：e3AB3fC论文网www.abclunwen.com

This study contributes to organizational studies by incorporating a network view to the predominately triadic market mediation literature, explicating the determinants of the effectiveness by which mediating services are rendered, and suggesting new sources of competitive advantage that advance as well as complement established explanations.

本文通过在主导的三个市场中介文献中引入一种关系网络的观点，对组织研究做出了一些贡献，解释了中介服务报酬的来源—效果的决定因素，还提出了新的竞争优势的来源，提高了并且补充了现有的解释。

Solar energy and other renewable energy sources are a great alternative to fossil fuels. Other alternative energy sources, such as a water wheel or wind powered energy offer much less of a negative impact on the environment.

太阳能和其他可再生能源的来源是一个伟大的替代矿物燃料，其他替代能源的来源，例如作为一个水车轮或风动力能源提供少得多的负面影响，对环境的影响。

College of Grain and Food, Henan University of Technology, 450052, Zhengzhou, People's Republic of China Abstract: Wheat foods have often been described as the staff of life.

人们通常认为小麦是碳水化合物的主要来源，事实上，对于以小麦面制食品为主食的地区的人们来讲，它也是蛋白质、维生素和矿物质的丰富来源。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。