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Synthesis of Ferrocenophanes with tetrazine side chain and its investigation on anion recognization

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Synthesis of Ferrocenophanes with tetrazine side chain and i...

中国化学会第十三届全国有机合成化学学术研讨会

作者： Li Jing-yu Wu Pei Niu Nan-nan Wang Jian-chun Department of Chemistry Capital Normal University

In this paper,1,1’-ferrocenedicarbonyl chloride was prepared via three steps of acetylation,oxidation and halogenation;At the same time,N,N-bis(3-aminoalkyl)-1,2,4,5-tetrazine-3,6-diamine(a1,a2,a3) were prepared by the reaction of 3,6-bis(3,5-dimethylpyrazolyl)-1,2,4,5-tetrazine with ethyldiamine,propane-1,3-diamine and butane-1,4-diamine;1,1’-Ferrocenedicarbonyl chloride reacted with a1,a2,a3 respectively to form tetrazine ferrocenophanes(f1,f2,f3) which were confirmed by H-NMR、C-NMR、IR and *** properties on anions of f1,f2,f3 were investigated by Uv-vis *** results showed that maximum absorption peak of four anions(CO,OH-,PO,BO) possessed obvious difference on visible zone.

关键词： Tetrazine Ferrrocenophane anion recognition Uv-vis spectrum

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爆炸荷载作用下配筋砌体结构的动力响应

爆炸与冲击 2012年第6期32卷 658-662页

作者：田玉滨李朝张春巍哈尔滨工业大学土木工程学院黑龙江哈尔滨150090

基于大型非线性动力有限元软件LS-DYNA,通过改变墙体的约束情况、砌体材料的强度等级、纵向配筋率、高宽比、荷载峰值、墙体距爆心点距离、墙体开洞以及粘贴玻璃纤维复合材料等,得到配筋砌体墙在爆炸荷载作用下的变形规律、破坏情况以... 详细信息

基于大型非线性动力有限元软件LS-DYNA,通过改变墙体的约束情况、砌体材料的强度等级、纵向配筋率、高宽比、荷载峰值、墙体距爆心点距离、墙体开洞以及粘贴玻璃纤维复合材料等,得到配筋砌体墙在爆炸荷载作用下的变形规律、破坏情况以及结构墙体中砌体材料、钢筋的应力和位移随时间的变化规律。同时对各种不同工况下配筋砌体墙的防爆性能进行比较,找出了影响结构响应最为重要的因素,给配筋砌体墙防爆设计提供参考。

关键词：爆炸力学动力响应 LS-DYNA 配筋砌体墙

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高铁开通对区域旅游业发展的影响

财经问题研究 2020年第1期 31-38页

作者：余泳泽伏雨庄海涛南京财经大学国际经贸学院江苏南京210046 南京财经大学产业发展研究院江苏南京210046

高铁以其高速、便捷的特征极大地提升了区域可达性,高铁开通究竟对中国区域旅游业发展带来了怎样的影响?为了深入探讨这一问题,本文基于2004—2013年中国287个地级市层面的数据,利用双重差分法和倾向得分匹配—倍差法分析了高铁开通对... 详细信息

高铁以其高速、便捷的特征极大地提升了区域可达性,高铁开通究竟对中国区域旅游业发展带来了怎样的影响?为了深入探讨这一问题,本文基于2004—2013年中国287个地级市层面的数据,利用双重差分法和倾向得分匹配—倍差法分析了高铁开通对区域旅游业的影响。研究结果显示:总体来看,高铁开通促进了沿线城市旅游业的发展,相比未开通高铁的城市,开通高铁的城市旅游业收入呈现了更快速的增长;高铁开通对旅游业的发展具有一定的时滞效应,在开通后的第2—3年影响效应逐年增强;高铁开通对旅游业的影响呈现较为明显的区域异质性,高铁对旅游业的促进作用从东到西逐渐减弱。

关键词：高铁开通旅游业发展双重差分法倾向得分匹配—倍差法

转录因子CCAAT增强子结合蛋白β(C/EBPβ)的研究进展

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遗传 2011年第3期33卷 198-206页

作者：高运臻潘玉春上海交通大学农业与生物学院上海200240 上海市兽医生物技术重点实验室上海200240

CCAAT增强子结合蛋白β(CCAAT enhancer binding protein,C/EBPβ)是CCAAT增强子结合蛋白家族的一员。该家族是碱性亮氨酸拉链大家族的一个亚家族,在细胞分化、能量代谢、生长发育等多个进程中发挥作用。文章就C/EBPβ的结构、表达调控... 详细信息

CCAAT增强子结合蛋白β(CCAAT enhancer binding protein,C/EBPβ)是CCAAT增强子结合蛋白家族的一员。该家族是碱性亮氨酸拉链大家族的一个亚家族,在细胞分化、能量代谢、生长发育等多个进程中发挥作用。文章就C/EBPβ的结构、表达调控和生物学功能做一综述,并对研究应用进行了展望。

关键词： CCAAT增强子结合蛋白结构表达调控生物学功能

二维配合物{[Gd(HEDTA)]·3H_2O}_n的合成,晶体结构和磁性质(英文)

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无机化学学报 2011年第5期27卷 984-988页

作者：李琳冯春杰张玉涛贵州安顺学院化学与生物农学系安顺561000 贵州安顺学院物理与电子科学系安顺561000

采用水热法通过Gd2O3与乙二胺四乙酸为配体的反应合成出1个新的具有二维层状结构的钆金属配位聚合物{[Gd(HEDTA)].3H2O}n(1)。X-射线单晶衍射分析表明,晶体属于正交晶系,Pbca空间群,钆金属离子为八配位的方形反棱镜构型,通过乙二胺四乙... 详细信息

采用水热法通过Gd2O3与乙二胺四乙酸为配体的反应合成出1个新的具有二维层状结构的钆金属配位聚合物{[Gd(HEDTA)].3H2O}n(1)。X-射线单晶衍射分析表明,晶体属于正交晶系,Pbca空间群,钆金属离子为八配位的方形反棱镜构型,通过乙二胺四乙酸配体处于相反位置上两个羧基的连接,形成了尺寸为0.6666 nm×0.6692 nm的四核钆金属方形构筑单元。这些构筑单元进一步被乙二胺四乙酸配体连接成(4,4)拓扑网络结构。游离水分子和羧酸氧原子间通过氢键作用进一步将二维结构构筑成ABAB顺序的三维超分子网络结构。磁性质测试表明该化合物为反铁磁。

关键词：水热合成钆(Ⅲ)配合物晶体结构磁性性质

Evidence for Octupole Correlations in ^(117)Xe

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Chinese Physics Letters 1996年第11期13卷 805-808页

作者： LIU Zhong SUN Xiang-fu ZHOU Xiao-hong LEI Xiang-guo GUO Ying-xiang JIN Han-juan ZHANG yu-hu CHEN Xin-feng LUO Yi-xiao WEN Shu-xian YANG chun-xiang yuAN Guan-jun LI Guang-sheng LIU Xiang-an Chen Yong-shou Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 China Institute of Atomic Energy Beijing 102413

High spin states in neutron-deficient ^(117)Xe have been studied by using in-beamγspectroscopy method.A new positive-parity rotational band has been *** decays into the yrast vh_(11/2 )band via five electric dipole *** magnitudes of these E1 transitions are extracted and they are much enhanced compared to the normal E1 *** is taken as an evidence for octupole correlations in ^(117)Xe.

关键词： method transitions

Mott Transition and Superconductivity in Quantum Spin Liquid Candidate NaYbSe2

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Chinese Physics Letters 2020年第9期37卷 89-94页

作者： Ya-Ting Jia chun-Sheng Gong Yi-Xuan Liu Jian-Fa Zhao Cheng Dong Guang-Yang Dai Xiao-Dong Li He-Chang Lei Run-Ze yu Guang-Ming Zhang Chang-Qing Jin Institute of Physics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices Ren min University of ChinaBeijing 100872China Peking University Shenzhen Graduate School School of Advanced MaterialsShenzhen 518055China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijing 100084China Frontier Science Center for Quantum Information Beijing 100084China

The Mott transition is one of the fundamental issues in condensed matter physics,especially in the system with antiferromagnetic long-range ***,such a transition is rare in quantum spin liquid(QSL)systems without long-range *** we report the experimental pressure-induced insulator to metal transition followed by the emergence of superconductivity in the QSL candidate NaYbSe2 with a triangular lattice of 4 f Yb^3+*** analysis of transport properties in metallic state shows an evolution from non-Fermi liquid to Fermi liquid behavior when approaching the vicinity of *** irreversible structure phase transition occurs around 11 GPa,which is revealed by the x-ray *** results shed light on the Mott transition in the QSL systems.

关键词： diffraction. transition Fermi

Application of Precision-Cut Rat Liver Slice to Study the Influence of Monocrotaline, Tussilago farfara Alkaloids on the Expression of Cytochrome P450 Enzymes

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Health 2016年第4期8卷 370-379页

作者： Hailin Wang Lianqiang Hui chun Li Ting Liu Chang’an yu chunyu Cao Ran Hao Yi Zhang Institute of Chinese Materia Medica China Academy of Chinese Medical Sciences Beijing China China-Japanese Friendship Hospital Beijing China

Precision-cut liver slice has been successfully used to study the mechanism of drug-induced hepatotoxicity, the prediction of liver toxicity, the discovery of early hepatic toxicity biomarker and the metabolism of drug in liver. We detected the expression of CYP3A4, CYP2B1 + CYP2B2 and CYP2E1 in precision-cut liver slice after co-cultured with monocrotaline or Tussilago farfara alkaloids to investigate the hepatotoxicity mechanism of those drugs. After co-culturing with monocrotaline or Tussilago farfara alkaloids for 6 hours, the expression of CYP3A4 in the microsome of precision-cut liver slices was detected by Western blot, and the expressions of CYP2B1 + CYP2B2 and CYP2E1 were detected by immunofluorescence. The results showed that monocrotaline induced the expression of CYP3A4 and CYP2B1 + CYP2B2, and Tussilago farfara alkaloids obviously up-regulated the expression of CYP2E1 and CYP3A4. Thus, we conclude that the up-regulation of CYP3A4, CYP2B1 + CYP2B2 and CYP2E1 may be one of the toxic mechanisms of liver injury of those drugs.

关键词： Precision-Cut Liver Slices Monocrotaline Tussilago farfara Alkaloids Hepatotoxity Cytochrome P450 Enzymes

Synthesis of monoclinic structure gallium oxide film on sapphire substrate by magnetron sputtering

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Optoelectronics Letters 2017年第4期13卷 295-298页

作者： SUN Jian-xu MI Wei ZHANG De-shuang YANG Zheng-chun ZHANG Kai-liang HAN Ye-mei yuAN yu-jie ZHAO Jin-shi LI Bo Tianjin Key Laboratory of Film Electronic ＆ Communication Devices School of Electronics Information Engineering Tianjin University.of Technology Tianjin 300384 Chin Research and Development Center of Silicon Devices and Integrated Technology Institute of Microelectronics Chinese Academy of Sciences Beijing 100029 China

Gallium oxide （Ga203） films were deposited on singlecrystalline sapphire （0001） substrate by radio frequency （RF） magnetron sputtering technique in the temperature range of 300--500 ℃. The microstructure of the fl-Ga203 films were investigated in detail using X-ray diffractometer （XRD） and scanning electron microscope （SEM）. The results show that the film prepared at 500℃ exhibits the best crystallinity with a monoclinic structure （fl-Ga203）. Structure analysis reveals a clear out-of-plane orientation offl-Ga203 （201） II A1203 （0001）. The average transmittance of these films in the visible wavelength range exceeds 90%, and the optical band gap of the films varies from 4.68 eV to 4.94 eV which were measured by an ultraviolet-visible-near infrared （UV-vis-NIR） spectrophotometer. Therefore, it is hopeful that the fl-Ga203 film can be used in the UV optoelectronic devices.

关键词： Energy gap Gallium Infrared devices Magnetron sputtering Optoelectronic devices Sapphire Scanning electron microscopy