国际直接投资的争端及其解决

国际投资争端，是指在国际投资活动中所产生的不同国籍的投资者之间、国家之间或它们相互之间因投资而引起的各类争议的总和。根据争端当事人组合的不同情况，国际投资争端大体可区分为国家间投资争端，国家与他国国民间投资争端和不同国籍私人投资者投资争端3种类型，本..

国际直接投资的争端及其解决

国际投资争端，是指在国际投资活动中所产生的不同国籍的投资者之间、国家之间或它们相互之间因投资而引起的各类争议的总和。根据争端当事人组合的不同情况，国际投资争端大体可区分为国家间投资争端，国家与他国国民间投资争端和不同国籍私人投资者投资争端3种类型，本..

Design and Implementation of English Online Examination System

伴随着计算机技术和计算机网络技术的不断发展进步，许多人工操作已经被计算机程序所代替，如现在的自动化办公软件(OA)。而在线考试系统是较慢发展起来的一种软件系统。在线测试系统不仅能够及时获得测试结果，同时可以节约人力财力。在当今这个知识化、信息化很强的社会情况下，其作用也是越来越重要。 目前，存在的网络在线考试系统也比较多，但大多考试系统的科目都过于繁多，而且商业性质非常浓厚，需要用户注册并支付相应的费用才能正常使用。同时这些系统只能进行简单的测试，无法对测试用户的成绩进行分析统计，以帮助用户改进学习方案。 本课题将用软件工程设计规范原理，采用MVC架构，结合数据库技术，在Microsoft...With the developing of computer technology and computer network technology, many manual operations were replaced by computer programs like the Office Automation system (OA). The online examination system is later than that which can not only get the results in time but also save money, resource and labors. So it becomes more and more important in the era of the high information, knowledgeable soci...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201123000

Research on High S/P of Phosphor-type White LED with High Color Temperature

对于白光照明而言,显色指数(CRI)和暗视觉下光通量与明视觉下光通量的比值(S/P)是衡量白光光源质量的两个重要参数。CRI反映的是待测光源下物体色彩还原能力;而S/P值越高的光源下人眼视物越清晰,对节能也具有一定作用。一般而言,这两个参数越高越好;然而在实际中,两者是一对矛盾体。当前的大部分白光光源的S/P值普遍低于2.5。白光发光二极管(LED)具有光谱可调特性,因此可以通过优化光谱,在满足一定的CRI下获得更高的S/P值。首先模拟光谱,然后通过计算机编程调节光谱峰值波长、相对光强度等光谱参数,最终获得高色温(6 500 K)下高S/P值光谱,对于节能照明光源设计具有重要参考价值。For white light illumination, color rendering index(CRI) and scotopic/photopic(S/P) ratio are twocritical parameters to evaluate the quality of white light source. The CRI is introduced to describe the color fidelityof objects under tested light sources. Under light sources with higher S/P values, human eyes can see more clearly,and it also has a certain effect on energy saving. In general, the higher is the values of the two parameters, the quali-ty of the illumination effect is better. However, there is a trade-off between them. The S/P value of most of the cur-rent white light sources is generally less than 2.5. White light emitting diode(LED) has spectrum adjustment charac-teristic, so higher S/P value is obtained under the condition of meeting the certain CRI through optimizing spectrum.Firstly, LED spectrum is simulated, and then spectrum parameters such as spectrum peak wavelength and relativelight intensity are adjusted through computer programming. Finally, high S/P value spectrum under the high colortemperature of 6 500 K is obtained, which has an important reference value for energy-saving illumination lightingsource design.中德国际科技合作项目(2015DFG62190

便携式拉曼光谱仪快速检测唾液中盐酸吡格列酮的含量

人体唾液与血液中的相应成分有着密切关系。利用唾液代替血液进行检测,可极大地缩短分析时间、减少检测限制、降低安全隐患等,因此在临床医学、毒品管控等方面均有重要意义。发展了便携式拉曼光谱仪利用表面增强拉曼光谱技术快速定量检测唾液中盐酸吡格列酮（口服降血糖药物）含量的方法。借助纳米金溶胶的表面增强拉曼散射效应,在激发光源波长为785 nm时,可以得到低浓度盐酸吡格列酮的高质量拉曼光谱图。同时,不同浓度盐酸吡格列酮表面增强拉曼光谱分析结果表明,该方法还可直接用于唾液中盐酸吡格列酮的定量检测。盐酸吡格列酮含量与其特征峰强度线性相关,相关系数为0. 992 3,且最低检测浓度达10μg·L-1。国家自然科学基金项目(21522508);;深圳市科技计划基础研究(自由探索)项目(JCYJ20170306140934218)资

芪参益气滴丸对ApoE基因敲除小鼠动脉粥样硬化中调节性T细胞的影响

目的:研究芪参益气滴丸对动脉粥样硬化中调节性T细胞的影响。方法:采用6周龄雄性C57BL/6J小鼠和Apo E基因敲除小鼠,分为正常组、模型组、芪参低剂量组、芪参高剂量组,每组6只。除正常组外,其他3组小鼠均给予高脂饲料喂养,药物组还给予高、低剂量的芪参益气滴丸,8周后评价内脏指数、动脉粥样硬化病变、调节性T细胞情况。结果:与模型组比较,芪参高剂量组可显著降低肝指数(P<0.05),减少动脉粥样硬化斑块面积(P<0.05,P<0.01),并增加脾脏调节性T细胞数量(P<0.01)。结论:芪参益气滴丸可能通过增加脾脏调节性T细胞数量抑制动脉粥样硬化形成。福建省自然科学基金项目(No.2016J01413);;广东省自然科学基金项目(No.2016A030313860);;教育部留学回国人员科研启动基金项目(No.2015-311);;教育部“新世纪优秀人才支持计划”项目(No.NCET-13-0505);;国家重点研发计划“重大慢性非传染性疾病防控研究”重点专项(No.2016YFC1305903)~

Carbon arc production of heptagon-containing fullerene[68]

通讯作者地址: Xie, SY (通讯作者),Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 3. Xiamen Univ, Fujian Prov Key Lab Theoret & Computat Chem, Xiamen 361005, Peoples R China 4. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem Engn, Xiamen 361005, Peoples R China 电子邮件地址: [email protected], [email protected], [email protected] carbon heptagon ring is a key unit responsible for structural defects in sp(2)-hybrized carbon allotropes including fullerenes, carbon nanotubes and graphenes, with consequential influences on their mechanical, electronic and magnetic properties. Previous evidence concerning the existence of heptagons in fullerenes has been obtained only in off-line halogenation experiments through top-down detachment of a C(2) unit from a stable fullerene. Here we report a heptagon-incorporating fullerene C(68), tentatively named as heptafullerene[68], which is captured as C(68)Cl(6) from a carbon arc plasma in situ. The occurrence of heptagons in fullerenes is rationalized by heptagon-related strain relief and temperature-dependent stability. (13)C-labelled experiments and mass/energy conservation equation simulations show that heptafullerene[68] grows together with other fullerenes in a bottom-up fashion in the arc zone. This work extends fullerene research into numerous topologically possible, heptagon-incorporating isomers and provides clues to an understanding of the heptagon-involved growth mechanism and heptagon-dependent properties of fullerenes.NNSF of China 21031004 21021061 20973137 20876127 973 Program 2007CB815300(1,7) 2011CB93590

Pentagon-Fused Hollow Fullerene in C-78 Family Retrieved by Chlorination

通讯作者地址: Xie, SY (通讯作者), Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 3. Wuhan Univ, Dept Chem, Minist Educ, Key Lab Analyt Chem Biol & Med, Wuhan 430072, Peoples R ChinaC-78 is one of the most widely investigated higher fullerenes. Among its huge isomer family, only one non-IPR (IPR = isolated pentagon ring) cage, the C-2-symmetric C-#22010(78), was previously stabilized by endohedral derivatization. Here we report a new C-1-symmetric non-IPR hollow isomer, C-#23863(78), which was captured as (C78Cl8)-C-#23863 and then subjected to a regioselective substitution reaction with benzyl hydroperoxide to form C-#23863(78)(OOCH2C6H5)Cl-7. The structural connectivity of C-#23863(78), which contains a pair of fused pentagons, was confirmed by single-crystal X-ray diffraction analysis of the C-#23863(78)(OOCH2C6H5)Cl-7 molecule, which shares the same fullerene core with (C78Cl8)-C-#23863, support for the structure is provided by comparable IR measurements and computation. Theoretical studies suggest that the differences in C-Cl bond length, intermediate stability, and steric effects of the involved molecules account for the chemical regioselectivity of the substitution reaction.NNSF of China 20525103,20721001 ,20625516 973 Program 2007CB81530

Chlorofullerenes featuring triple sequentially fused pentagons

通讯作者地址: Tan,YZ(通讯作者),Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 电子邮件地址: [email protected], [email protected] triple sequentially fused pentagons (TSFP) motif is one of the basic subunits that could be used for constructing fullerenes, but it violates the isolated pentagon rule (IPR) and has not been found in carbon cages to date. The properties of TSFP-incorporating fullerenes are thus poorly explored both theoretically and experimentally. Reported herein are four chlorinated derivatives of three different fullerene cages, all with the TSFP motif. X-ray crystallographic analyses indicate that the molecular strain inherent to the pentagon adjacency of a TSFP is significantly relieved upon exohedral chlorination, leaving one of the four pentagon fusion sites unsaturated and rendering the present derivatives chiral. This unique reactivity, in stark contrast to that of previously reported non-IPR fullerenes containing double fused pentagons or triple directly fused pentagons, can be rationalized by density functional theory calculations, and are expected to stimulate further studies of these new members of the fullerene family, both theoretically and experimentally.NNSF of China 20525103,20531050,20721001,20423002 20673088 973 Program 2007CB81530