1,784 research outputs found

    Studies of the Syntheses and Reactivities of Several Conjugated Osmacycles

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    金属杂芳香化合物由于兼具金属有机化合物和芳香化合物的性质而备受瞩目。目前,各种新型结构的金属杂芳香化合物相继问世,而针对卤代金属苯(金属苯上含有卤素取代基的化合物)的研究却相对较少。本论文合成了两例稳定的碘代金属苯并研究了其反应性。此外,论文还考察了锇杂环戊二烯和锇杂五元环内联烯这两类金属杂环化合物的反应性。本论文主要分为以下五个部分: 第一章为绪论,简要介绍了金属苯、金属杂环戊二烯以及金属杂环内联烯的合成与反应性研究。阐述了本论文的选题依据和研究内容。 第二章合成了两例稳定的碘代锇苯,并考察了其反应性。发现不稳定的碘代锇苯通过配体取代反应可生成稳定的碘代锇苯。通过考察碘代锇苯的反应性,发...The chemistry of metalla-aromatics has become a hot topic due to their aromaticity as well as various reactivities. So far, the report of halogenated metallabenzene is still very rare (only a few examples of halogenated metallabenzene were synthesized, however, their reactivities had not been reported). In this dissertation, we developed a easy and feasible method to synthesize a stable iodosmaben...学位:理学硕士院系专业:化学化工学院_有机化学学号:2052011115156

    Study on the Marketing Strategy Optimization of A Green Lighting Enterprise

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    绿色照明的概念是上个世纪90年代由美国国家环保局首次提出来的,其主要内涵包括节能、环保、安全及舒适。节能意味着使用较少的电量达到充足的照明效果,从而减少能源的消耗,实现环保的目的。安全和舒适则是指光照的柔和、清晰、不产生光污染。随着全球经济的飞速发展,不管是从消费者角度还是国家层面,节能减排都成为照明行业发展的趋势之一,所以各国都在推行节能减排工作,我国也不例外,照明行业作为耗能较大的产业之一,推行节能的发光二极管(LED)光源已成为发展趋势,传统的照明灯具白炽灯也逐步退出市场。随着LED市场需求的日益增多,加上政府政策的指引,LED行业飞速发展,灯具企业也越来越多,而在如此激烈的市场竞争中,...Green lighting is the concept of the 90 s by the national environmental protection bureau for the first time, the main content including energy conservation, environmental protection, safety and comfort. Energy saving means that use less power to achieve adequate illumination, thus reducing energy consumption, achieve the purpose of environmental protection. Safe and comfortable is refers to the l...学位:工商管理硕士院系专业:管理学院_工商管理硕士(工商管理硕士)学号:1792011115071

    Immunohistochemical Study of Serotonin in the Digestive System of Scylla serrata

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    【中文摘要】 应用免疫组织化学方法对锯缘青蟹消化系统的 5- HT分泌细胞的形态和分布进行了观察 .结果表明 :5- HT阳性细胞形态多样 ,多数为卵圆形 ,少数为柱形 ,多边形或具有较长的胞突 .消化道各段均有 5- HT阳性细胞 ,中肠密度最高 ,食道次之 ,贲门胃、幽门胃和后肠较低 .5- HT阳性细胞多数位于固有膜和粘膜下层 ,少数散布于肌层 .肝胰腺也具有 5- HT阳性细胞 【英文摘要】 The morphology and distribution of serotonin(5 HT) immunoreactivity in the digestive system of Scylla serrata were investigated. 5 HT immunoreactive cells had various forms: the majority were oval, while the minority were columnar, irregular in shape, or having long processes. 5 HT immunoreactive cells were distributed throughout the digestive tract, with the highest density in the midgut, the second in the esophagus, and a low density in the stomach and hindgut. Most of the 5 HT immunoreactive c...福建省重中之重“福建省海洋生物优良种质和生物活性物质的应用基础研究”资助项

    A study on the genealogy of syncretism in Japan

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    シンクレティズムは宗教的世界に限定されず,文化的な面においても発生する現象であり,日本人の信仰と思想を理解する上でキーワードとなる概念である。多元的な構造をなしている日本人の信仰形態については,これまで主として「神仏習合」において理解され,解釈されてきた。しかし,神仏二教では日本人の信仰の全貌と真相を解明することはできない。本論文では,日本のシンクレティズムを神道・儒教・仏教の三教による構成と捉え,その所以を明らかにする。方法としては,古代から近世におけるシンクレティズムをなす事例を確認し,その変遷を辿りながら系譜付けを行う。そのうえで,日本のシンクレティズムの特徴についてまとめ,考察を行う。We can list Shinto, Confucianism and Buddhism as the three traditional religions that formed the base for the formation of Japanese cultural ideas. But, it has been generally acknowledged also by researchers, that the main base for Japanese cultural ideas is concentrated in the syncretic union of Shinto and Buddhism, called “shinbutsu shugo” and representing Japanese syncretism. This research has looked at the facts and people involved in the syncretism of Shinto, Confucianism and Buddhism, roughly looking at the historical flow from the Classical period. Finally, this research discusses the characteristic of Japanese syncretism.シンクレティズム神儒仏三教系譜宗教SyncretismgenealogyreligionShintoConfucianismBuddhis

    基于演化博弈理论的绿色旅游供应链绩效评价体系

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    绿色旅游作为可持续发展的一种形式,是一种环境保护和技术友好型的旅游发展模式,在旅游业的健康发展中起着重要作用。为了促进绿色旅游的发展,更好地评价绿色旅游供应链的绩效,本文结合演化博弈理论和平衡记分卡设计了一个绩效评估体系。基于演化博弈的角度,那些在绿色旅游决策过程中具有正向作用的选择将会不断地被学习和深化,所以在构建绿色旅游供应链的指标体系时更多地考虑到正向学习的深化,进一步而言,基于绿色旅游供应链优于传统旅游供应链的假设是否成立,通过演化博弈模型分析了绿色旅游供应链的形成和延续机制,发现第三方监督机制和企业之间的相互关系是影响博弈结果的关键参数。然后结合平衡记分卡,制定了12个绿色绩效的评价指标,并采用层次分析法对定量指标和定性指标进行处理。研究结果发现,指标的权重值由大到小依次为内部运营、财务、客户、学习与成长。最后,基于权重值计算结果,对企业不同指标的权重值进行了相应的分析,为旅游供应链中的企业提高绿色绩效提供了更灵活的选择

    Immunorecognition of Estrogen Receptor in the Optic Ganglion of Scylla serrata

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    【中文摘要】 利用免疫细胞化学SABC法对锯缘青蟹(Scylla serrata)视神经节雌激素受体(ER)进行定位研究.结果表明:视神经节的视外髓、视内髓和视端髓存在ER免疫阳性细胞.视神经节存在的ER免疫阳性细胞可以为雌激素提供结合位点.本研究为雌激素参与视神经节神经内分泌调节作用提供了形态学依据. 【英文摘要】 Antisera generated in vertebrate and immunocytochemical SABC method was applied to observe the immunoreactive neurons and neuropils of estrogen receptor(ER) in optic ganglia of Scylla serrata.The results showed that:ER-immunoreactive substance was located in medulla externa,medulla interna and medulla terminalis in optic ganglion.ER-immunoreactive neurons in optic ganglia might provide the binding sites for estrogen and accept the feedback regulation of estrogen.This present work provides the morphological ...国家自然科学基金(30300269)资

    The Study Of Investment Risk Management On The 3rd Project of The H Garden

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    房地产行业属于资本密集型产业,但是由于未来环境、条件具有不确定性,决定了房地产投资项目投资收益具有不确定性,同时需要承担风险。为了提高项目的投资收益避免资源浪费,必须进行房地产投资项目的风险分析和研究,找出遏制和消除风险的措施。正是基于上述认识,本文对H花园三期项目的投资风险管理进行了研究。本文的结构和基本内容如下:前言:概述风险管理理论,简要介绍本文的思路和结构。第一章:概述了项目的投资背景,进行项目投资收益的经济评价。第二章:识别影响收益的不确定因素,运用敏感性分析方法对项目的不确定性进行投资风险分析;对项目的现金流进行分析。第三章:对影响项目收益的二级风险因素进行分析,制定相应的风险控制...Abstract Real estate is a type of capital denseness. Investment income of real estate project is uncertain for uncertainty of circumstances and conditions, namely developers have to assume risks for income. In order to increase income and avoid resource waste in the future, we should find measures of checking and eliminating risks through study about investment of real estate. Base on thes...学位:工商管理硕士院系专业:管理学院工商管理教育中心_工商管理硕士(MBA)学号:20021504
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