为探索...

Basing on the economics, city planning, city management and architecture, taking city renewal theory both at home and abroad as the theoretical foundation, this dissertation gives an overall theoretical and positive investigation of the traditional commercial quarter, so as to give some useful instructions to the development of the traditional commercial quarter.

本文综合运用了经济学、城市规划学、城市管理学、建筑学等相关学科的知识，以城市更新理论为指导，对传统商业步行街区展开了理论研究与实证探索，旨在为我国传统商业步行街区的发展提供有益指导。

A new method for synthesizing rosin allyl alcohol ester was studied. p-Toluenesulfonic acid allyl alcohol ester was first synthesized by O-acylation of allyl alcohol with p-toluene sulfonyl chloride, using NaOH as catalyst. Then rosin allyl alcohol ester was synthesized from sodium resinate and p-toluenesulfonic acid allyl alcohol ester.

探索了一种两步合成松香烯丙醇酯的新方法，即先以烯丙醇和时甲苯磺酰氯为原料，以NaOH为催化剂，通过O-酰化反应合成中间体对甲笨磺酸烯丙醇酯，再与松香钠皂发生亲核取代反应合成目标产物松香烯丙醇酯。

The total synthese three natural compounds to explore enantioselective synthesis of flavanol: We use phloroglucin and 2, 4, 6-trihydroxyacetophone as starting materials to synthesis distenin in two ways; Resorcin was used to synthsis 2, 5-dimethoxymethoxyacetophone though 3 steps.

对黄烷醇化合物的立体选择性全合成进行了探索：以间苯三酚和2，4，6-三羟基苯乙酮为原料，尝试用两条路线对Distenin化合物进行了全合成研究；以对苯二酚为原料，经三步制得2，5-二甲氧甲氧基苯乙酮，与2，4，6-三甲氧甲氧基苯甲醛反应，经四步反应得到天然产物3，5，7，2′，5′-二五羟基黄烷关键中间体1-（2′，6′-二甲氧甲氧基苯）-3-（2"，4"，6-三甲氧甲氧基苯）丙烷-1R，2R-二醇83及其对映体84；简要介绍了EGCg类化合物的生物活性和研究概况。

In the first thirty years after her foundation ,the first central leadership, taking Mr. Mao as the core ,has explored ruggedly to search for a socialist modernization construction road fit for china .History has proved that Mr. Mao is the creator and founder of Chinese modernization .Consequently ,the leadership taking Mr.

新中国成立后的头30年，以毛泽东为核心的第一代中央领导集体，为寻找一条适合中国特点的社会主义现代化建设道路，进行了艰辛的探索，提出了一系列重要思想，历史表明，毛泽东是中国现代化事业的开创者和奠基者。

In order to search after appropriate nitrogen application dosage and proportion of phosphorus and potassium in the fertilizer composition, provide with a reasonable economic principle for scientific fertilization and guidance schemes for the production of quality sun-cured tobacco, an orthogonal design was used with small plot trials in the suitable growing areas to compare the effects on growth and development, yield, output value, and smoking quality of sun-cured tobacco, the results showed that the influences occurred in varying degrees while less or ruleless effects displaying on appearance quality and botanic characters respectively.

为研究和探索红土晒烟适宜的施氮量和氮磷钾比例，为生产优质红土晒烟提供经济合理的科学施肥依据和指导方案，运用正交设计，在红土晒烟适宜种植区进行重复小区比较试验，研究不同施氮量和不同氮磷钾比例对红土晒烟生长发育情况、产量、产值和内在品质的影响，结果表明，不同施氮量和氮磷钾比例对红土晒烟的产量、产值、以及内在品质存在不同程度的影响，而对烟丝外观质量的影响较小，对植物学性状的影响没有规律。

Education design has different class model, with new schoolteaching education design is exemple, read a class to be content with high school English, to education the design undertook preliminary discuss.

教学设计有不同课型，以新授课的教学设计为例，以高中英语阅读课为内容，对教学设计进行了初步探索。

Through the widly use of in-direction selected topic tacic, mainly develop the explore ability while making mistakes. According to investigation and study, it may help develop the self-thinking ability of the students and also the practise level, team work spirit, the sense of responsibility; Many faced and mutually worked evaluatation tactic is a negation for traditionnal evaluatation, it is good for the establish of newly relationship between teachers and students also students themselves, it may help the rising of students'study level and their self-confident, then the perfect of oneself. I hope this text will have some teahing reference for teachers, thus this text would have little help for the implementation of Chinese comprehensiveness studing.

通过非指示性选题策略的应用，突出培养学生在尝试错误的过程中的自主探索能力；通过实施小组合作性调查研究策略，培养学生的独立思考能力，提高实际操作水平，培养合作精神，增强社会责任感；多元互动的评价策略是对传统的评价的否定，有利于建立新型的师生关系和生生关系，使学生在提高学习水平的同时提升自信，逐步完善自我；希望我的论文能为广大一线教师提供教学参考，为语文综合性学习的实施尽微薄之力。

In his literary and dramatic works, Lessing expressed the thoughts to Enlighten and foster the national sprit and even to set up an integral national civilization; what"s more, he opposed the feudal separationist rule with his ideal of Kosmopolitismus. At that time, after succeeding and developing European humanist tradition, Lessing formed his religious philosophy and religious tolerance, with his rational opinion, he deepened the profundity of German Enlightenment. Furthermore, he created townspeople"s drama and advocated the realistic aesthetics. On the one hand, he praised their disposition and expressed their political desire and class interest, which made the townspeople as a new motive force to the German Enlightenment. In addition, Lessing"s Enlighten. thoughts greatly influenced the following movement—Sturm Und Drang. The essence of Lessing"s thoughts is our common valuable prosperity.In a word. Germany then greatly needed a person like Lessing, and Lessing was the child of German Enlightenment.

面对法国文化长期统治德国文化界的现状，莱辛勇敢地站出来反对"法国化"倾向，对德意志全社会进行民族启蒙，通过戏剧理论及作品，表达了建立统一的民族文化、培植德意志民族精神的思想，同时他提倡世界主义，并用它来为民族主义服务，以反对当时德国的分裂割据；他的宗教哲学思想及宗教宽容精神继承和发扬了西欧的人文主义传统，反映了莱辛的理性观，也针砭了当时德国的时弊，是他对德国启蒙运动进行的有益的探索，拓宽了德国启蒙运动的深度；莱辛在实践中创作了市民剧，他的市民主义和现实主义美学思想弘扬了市民阶级的性格，表达了他们的政治愿望和阶级利益，为德国启蒙运动增加了新的动力，是莱辛所作的杰出贡献之一；莱辛的启蒙思想对后世特别是狂飙突进运动有着重大的影响，他的思想中的精华部分是人类的共同财富。

This paper aims at the prominent issue that current models of spatial topological relations can not represent complex object, among which 9-Intersections Model (9IM) is well known. Therefore, taking cadastral data as example, one model of topological relations between complex and spatio-temporal objects based on 9IM is put forward. And the improved sweep-line algorithm is designed. Specific studies as follows:(1)According to the concepts of point set topology, the author distinguishes the complexity of the object, redefines the spatial point, line and region. For instance, in the simple region, concave one is more complex than convex, composite regions can be composed of many parts or with holes, and so on.

本文针对当前空间拓扑关系模型无法表达复杂对象的突出问题，以地籍对象为实例，以9I模型为基础，探索了一种适合复杂对象和时空对象的拓扑关系表达模型，较好地解决了地籍对象中各类要素间拓扑关系的描述和应用，实现了地籍变更中变化语义类型的推理和历史回溯；通过对现有的拓扑关系计算方法进行了改进，设计了相关算法，给出了C语言程序示例；最后通过实验系统的实现，验证了模型和算法的可行性。

To explore the potential mechanism of cigarette smoke extract -induced cell injury, primary cultured skin keratinocytes and fibroblasts from rat were selected as target cells in Part Ⅰ study compared with the effect of UVA.

本研究第一部分以原代培养的大鼠皮肤角质形成细胞和成纤维细胞为对象，采用UVA损伤作用为参照，探索香烟雾提取物（Cigarette SmokeExtract，CSE）对皮肤细胞的损伤作用，重点观察CSE所致的皮肤细胞毒作用、功能损伤及可能作用机制。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。