476 research outputs found

    新疆欧夜鹰繁殖生态初报

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    欧夜鹰(Caprimulgus europaeus)属夜行性鸟类。广泛分布于新疆荒漠地区,如乌鲁木齐、阿勒泰、克拉玛依、昌吉州、吐鲁番、哈密、阿克苏、库尔勒、喀什等地区(Ma,2001)。因其繁殖行为

    Synthesis, Characterization and Studies on Thermokinetics of the diastereomeric Transfer of Chiral Pentacoordinate Spirobicyclic Aminoacylphosphoranes(P-AAs)

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    五配位磷是生命过程中的反应过渡态和中间体,N-磷酰化氨基酸自组装成肽也经过五配位磷的中间体,研究含有氨基酸的五配位磷意义重大,研究五配位磷化合物立体化学互变异构的热动力学性质有助于进一步揭示生命体内酶的手性催化机理。我们设计合成系列氨基酸五配位双螺环磷烷作为研究生命体内五配位磷化合物的模型。 本论文采用新的一锅法合成系列氨基酸双螺环五配位磷烷(P-AAs)。由于P-AAs非对映异构体容易发生互变,因此分离十分麻烦。本论文首次结合正相硅胶柱层析法与多次重结晶法成功分离获得9种氨基酸双螺环五配位磷非对映异构体。P-AAs原子数目很多(特别是芳香碳),本论文通过核磁...Pentacoordinate phosphorus compounds have been recognized as the intermediates or transition states in biological system.They are also intermediates in self-assembly reactions of N-phosphoamino acids into peptides. It is important to study on pentacoordinate phosphorus containing -amino acid moiety since it is the model for study the mechanism of enzymatic chiral reactions. In this thesis,...学位:理学硕士院系专业:化学化工学院化学系_有机化学学号:2052008115167

    主観的裁量と条件文

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    Study on English Tort Law

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    本研究报告对英国侵权法进行了较全面深入的研究和探讨,在此基础上,提出了我国侵权法如何合理借鉴其有益经验的意见和看法。全文共分20章,各章主要内容包括:第一章对英国侵权法的基本术语及侵权责任的目的和分类进行了研究和探讨。第二章对英国侵权法上的暴力威胁、暴力侵犯、错误拘禁等侵权的构成要件、抗辩及救济等问题进行了研究和探讨。第三章对侵犯土地之构成要件、抗辩及救济等问题进行了研究和探讨。第四章对侵占动产、侵犯动产之构成要件、抗辩及救济等问题进行了研究和探讨。第五-九章对英国侵权法适用最广的侵权即过失侵权的构成要件、抗辩等问题进行了较全面深入的研究和探讨。第十章对占有者责任的构成要件和救济问题进行了研究...This treatise studies and introduces English tort law and points out the suggestions about how to draw lessons from it. The treatise includes twenty chapters. Chapter one gives a general introduce about English tort law and chapter two studies and introduces three nominate torts, namely assault, battery and false imprisonment. Chapter three and four study and introduce three nominate torts, name...学位:博士后院系专业:法学院法律系_法学学号:BH1700009

    Environment Issues in International Trade and the Countermeasure

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    与国际贸易有关的环境问题越来越受到重视,理论界对自由贸易与环境保护之间的争议已久,产生了各种说法与解释;严格的环境保护标准必将影响一国产业的国际竞争力,进而影响对外贸易。合适的政策措施有利于解决全球范围内的贸易与环境之间的问题。Environment issues related to international trade is becoming more and more important all around the world.There are lots of disputes among free trade and environment protection.International competitiveness will be damaged and strict environment protection rules and the foreign trade of the economy furthermore.Appreciated strategies are needed to make trade and environment protection get on well

    市场经济环境下的假冒侵权问题刍议——以剖析英国法为例证

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    假冒侵权对市场经济的合理有序发展颇具损害力。本文拟对英国这一发达老牌市场经济国家的相关法治理论与实践进行剖析,以期获得一些对我国的相关理论研究及立法与司法实践有益的启示与结论

    Research and Design of Hotel Chain Management System

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    随着国内经济形势的持续发展,国内连锁酒店业进入难得的发展高峰期,要想在竞争中取得优势,必须在经营管理、产品服务等方面提高管理意识。如何利用先进的管理手段,提高客房的管理水平,是每一个酒店管理者所面临的重大问题。因此,酒店业务的信息化管理就成为了当务之急。 本文在分析连锁酒店管理的研究现状和系统需求的基础上,设计和实现一种适用于中小型连锁酒店的信息管理系统。系统采用目前比较流行的Struts2、Spring和Hibernate框架进行构建,是一种具有B/S架构的、基于Web的信息管理系统。系统具有客户信息管理、分店信息管理、会员信息管理、预订房间管理、经营管理和结账管理等功能。 本文主要...With the continuous development of the domestic economic situation, the development of domestic hotel in the hotel industry has entered rare peak. In order to get advantages in the competition, management awareness must be improved in aspects of management, product services. How to use advanced management tools to improve the management level of rooms is a major problem every hotel manager is face...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201023022

    Analysis of North-South's Disputes on Intellectual Property Rights and China's IPR Protection

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    南北国家在知识产权国际保护领域的争议由来已久,在争论的焦点在于知识产权保护与经济增长的关系。TrIPS作为协调知识产权国际保护的重要协议之一,逐渐发挥出应有作用。但从谈判到实施,南北国家对的TrIPS争议不断,不仅是南北国家在知识产权保护领域历史争议的延续,也是TrIPS中各成员不对称地位的体现。中国作为南方国家之一,在知识产权保护上已取得一定成绩,但也存在较多亟待解决的问题。在当前国际经济环境下,中国应根据本国实际确定合适的知识产权保护标准,加强与WTO其他发展中成员在知识产权保护上的合作。North-South's disputes on intellectual property rights are Long-standing,focusing on the relationship between the level of IPR protection and economic growth.TRIPs is one of the most important international agreements to manage and coordinate issues about IPR.Conflict existed although its negotiation and implementation,and still is existing now,reflecting North-South historical disputes and unequal situation in TRIPs.This paper also gives a brief introduction of China's IPR protection,and gives some policy proposals China should take in the current global economic environment

    International Coordination of E-Business and China’s strategies in the Post-crisis Era

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    电子商务快速发展带来许多全球化问题,这些问题不能在一国内得到解决,需要各国的协调一致行动。现有的官方和非官方组织在电子商务的多个领域展开协调,有效防止数字鸿沟的继续扩大,为电子商务创造了良好的发展环境,保证了交易数据安全,在消费者保护方面也取得积极效果。中国电子商务起步较晚,应采取积极措施顺应电子商务的全球发展趋势,为后危机时代中国电子商务的发展创造良好的制度环境。E-business is playing a key role in individual country’s economy as well as in global economy.Its global nature brings some problems to it,which can not be solved interiorly.The official and non -official organizations have undertaken due obligations to e-business coordination in many aspects,and gained remarkable achievements.How China’s e-business will develop is an important issue.The paper analyzes the strategies that China can take in order to survive during the post-crisis era
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