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Chinese Journal of Structural Chemistry 2020年第8期39卷 1451-1457,1359页

作者： ZHANG Hua XU Tongtong xing tianyi WANG Xueying ZUO Jiamei KONG Zhiguo Key Laboratory of Preparation and Applications of Environmental Friendly Materials Jilin Normal UniversityMinistry of EducationChangchun 130103China Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal UniversityMinistry of EducationChangchun 130103China Department of Chemistry Jilin Normal UniversitySiping 136000China

Two new coordination complexes[Cd(L)2(1,2,3-HBTC)]·3H2O(1)and{[Zn(L)(1,2-BDC)]-H2O}n(2)were synthesized under hydrothermal conditions(1,2,3-H3 BTC=1,2,3-tricarboxybenzene,1,2-H2 BDC=1,2-dicarboxybenzene and L=2,2’-H2 biimidazole).1 crystallizes in monoclinic,space group P21/c with a=12.256(5),b=11.620(5),c=17.479(5)A,β=95.548(5)°,V=2477.6(16)A^3,Z=4,C21H22N8 O9 Cd,Mr=642.86,Dc=1.724 g/cm^3,F(000)=1296,μ(MoKa)=0.950 mm^-1,R=0.0546 and wR=0.1724.2 belongs to the monoclinic system,space group P21/c with a=7.408(4),b=20.743(10),c=10.194(5)A,β=95.648(6)°,V=1477.3(12)A^3,Z=4,C14H12N4 O5 Zn,Mr=381.65,Dc=1.716 g/cm3,F(000)=776,μ(MoKa)=1.698 mm^-1,R=0.0574 and wR=*** central Cd(Ⅱ)ion in 1 is coordinated with five atoms,forming a slightly distorted square-pyramidal *** central Zn(Ⅱ)ion in 2 is four-coordinated by two nitrogen atoms from one L ligand and two oxygen atoms from two different 1,2-BDC *** addition,luminescent property of 1 has been investigated,and natural bond orbital(NBO)analysis of 2 has been calculated by the B3LYP/LANL2DZ method.

关键词： structure coordination complex 2,2'-H_(2)biimidazole luminescent property

PIN1 promotes differentiation of Th17 cells and autoimmune inflammation

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PIN1 promotes differentiation of Th17 cells and autoimmune i...

利用高效液相色谱法测定食品中胭脂红酸的探讨

第十四届全国免疫学学术大会

作者： Guangyue Fan Guangliang Li Ruijie Dong tianyi xing Bingying Luo Zhenyi Xue Long Li Yurong Da Tianjin Medical University 悉尼大学

Disorder of Th17 cells mediated immune response is the basis of a variety of inflammatory and autoimmune diseases, including multiple sclerosis and its disease model in mice, experimental autoimmune encephalomyelitis(EAE). Here, we show that Peptidylprolyl Cis/Trans Isomerase, NIMA-Interacting 1(PIN1), which specifically binds to phosphorylated Ser/Thr-Pro motifs to catalytically regulate the post-phosphorylation conformation of its substrates, is a key factor that controls Th17 cell differentiation in autoimmune inflammation. We have found that PIN1 is highly expressed in Th17 cells differentiated both in vitro and in the lymph nodes and central nervous system of EAE mice. Moreover, we have found as well that mice with PIN1 knockout exhibited delayed EAE and slow disease progression, while the number of Th17 cells was reduced. Mechanistically, PIN1 translocates into the nucleus and interacts with STAT3, enhancing phosphorylation level of STAT3, and therefore activates the STAT3-RORγt axis that controls Th17 differentiation. Thus, PIN1 acts as a key regulator that regulates the differentiation and function of Th17 cells in autoimmune-mediated inflammation.

关键词： PIN1 Th17 STAT3

来源： cnki会议评论

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现代食品 2019年第13期4卷 149-151,155页

作者：邢天一江苏权正检验检测有限公司江苏南通226000

随着食品行业的不断发展,食品中的添加剂及色素种类也越来越多。食品中色素的添加量要遵循食品安全标准,过量添加色素将会对人体健康产生一定的影响和危害。胭脂红酸作为一种天然着色剂,在食品中的应用非常广泛,而食品中胭脂红酸含量的... 详细信息

随着食品行业的不断发展,食品中的添加剂及色素种类也越来越多。食品中色素的添加量要遵循食品安全标准,过量添加色素将会对人体健康产生一定的影响和危害。胭脂红酸作为一种天然着色剂,在食品中的应用非常广泛,而食品中胭脂红酸含量的测定也一直备受关注。本文利用高效液相色谱法对食品样品中的胭脂红酸进行测定。试验结果表明,该方法在0.20~100μg·mL-1范围内呈良好的线性关系,其相关系数为0.9999,加标回收率为85.1%~97.2%,相对标准偏差(n=6)为2.7%~7.4%,检出限为0.3mg·kg^-1,说明高效液相色谱法适用于胭脂红酸的测定。

关键词：高效液相色谱法胭脂红酸含量测定

东北三省经济增长动态效率测度及分析——基于动态效率理论下AMSZ准则

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吉林金融研究 2021年第1期 18-21,55页

作者：邢天怡尹俊伟中国人民银行哈尔滨中心支行黑龙江哈尔滨150000 中国人民银行佳木斯市中心支行黑龙江佳木斯154000

经济增长理论中,动态效率低下指经济体储蓄、投资过多,消费未最大化的现象。美学者Abel(1989)提出AMSZ评判准则,即资本回报大于或等于资本投入时,经济动态有效。本文在分析经济增长动态效率理论基础上,使用AMSZ准则对东北三省经济增长... 详细信息

经济增长理论中,动态效率低下指经济体储蓄、投资过多,消费未最大化的现象。美学者Abel(1989)提出AMSZ评判准则,即资本回报大于或等于资本投入时,经济动态有效。本文在分析经济增长动态效率理论基础上,使用AMSZ准则对东北三省经济增长动态效率进行测算。结果表明自2000年以来东北三省经济增长基本是动态有效的;但从2013年起资本积累效率开始下降,出现动态无效状态,这表明以往依靠投资驱动发展已难以为继,须提高资本产出效率、优化资源配置、提升技术水平,以实现可持续发展。

关键词：动态效率 AMSZ准则经济增长

基于空时对抗变分自编码器的人群异常行为检测

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智能系统学报 2023年第5期18卷 994-1004页

作者：邢天祎郭茂祖陈加栋赵玲玲陈琳鑫田乐北京建筑大学电气与信息工程学院北京100044 哈尔滨工业大学计算学部黑龙江哈尔滨150001

基于视频的人群异常行为检测对提前发现安全风险、预防群体安全事故发生具有重要价值。针对人群异常行为事件的稀少性导致的无法直接充分学习异常样本的表示、异常事件检测精度低的问题,在变分自编码器基础上,提出一种基于预测的空时对... 详细信息

基于视频的人群异常行为检测对提前发现安全风险、预防群体安全事故发生具有重要价值。针对人群异常行为事件的稀少性导致的无法直接充分学习异常样本的表示、异常事件检测精度低的问题,在变分自编码器基础上,提出一种基于预测的空时对抗变分自编码器(spatial-temporal adversarial variational autoencoder,STAVAE)视频异常检测模型,通过引入长短期记忆网络(long short-term memory,LSTM)和对抗网络模块,对正常样本视频序列的时间维度与空间维度进行联合特征表示与重构,减少了正常样本重建过程中的特征损失进而扩大了异常样本的预测损失,避免了对异常样本的依赖,实现了基于模型重构误差的人群逃散异常行为检测。在公开数据集UMN及采集视频数据集上进行对比实验,证明ST-AVAE模型在基于监控视频的人群异常逃散行为检测中均具有最优的检测精度和召回率,对抗网络模块显著提升了异常检测的性能。

关键词：人群异常行为检测变分自编码器自编码器长短期记忆网络对抗网络空时对抗变分自编码器重构误差异常逃散行为

维普期刊数据库博看期刊

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工程管理专业人才就业能力影响机理研究

当代教育理论与实践 2020年第6期12卷 72-78页

作者：李素红李丽杰尹志军邢天一河北工业大学经济管理学院天津300401

针对工程管理专业人才培养和就业现状,运用结构方程模型构建家庭环境、学校教育、社会环境、个体特征四个因素与工程管理专业人才就业能力的关系模型,对工程管理专业人才就业能力的影响因素及作用机理进行研究。结果表明:学校教育、社... 详细信息

针对工程管理专业人才培养和就业现状,运用结构方程模型构建家庭环境、学校教育、社会环境、个体特征四个因素与工程管理专业人才就业能力的关系模型,对工程管理专业人才就业能力的影响因素及作用机理进行研究。结果表明:学校教育、社会环境和个体特征对就业能力有正向影响;学校教育和家庭环境对个体特征有正向影响;社会环境对学校教育有正向影响。最后根据分析结果,就提升工程管理专业人才就业能力提供对策建议。

关键词：工程管理专业人才就业能力影响因素作用机理结构方程模型

The power of comments： fostering social interactions in microblog networks

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Frontiers of Computer Science 2016年第5期10卷 889-907页

作者： tianyi WANG Yang CHEN Yi WANG Bolun WANG Gang WANG xing LI Haitao ZHENG Ben Y. ZHAO Department of Electronic Engineering Tsinghua University Beijing 100084 China Tsinghua National Laboratory for Information Science and Technology Beijing 100084 China Department of Computer Science University of California Santa Barbara CA 93106-5110 USA School of Computer Science Fudan University Shanghai 201203 China Department of Mathematics Syracuse University Syracuse NY 13244-1150 USA

Today＇s ubiquitous online social networks serve multiple purposes, including social communication （Face- book, Renren）, and news dissemination （Twitter）. But how does a social network＇s design define its functionality？ An- swering this would need social network providers to take a proactive role in defining and guiding user behavior. In this paper, we first take a step to answer this question with a data-driven approach, through measurement and anal- ysis of the Sina Weibo microblogging service. Often com- pared to Twitter because of its format, Weibo is interesting for our analysis because it serves as a social communication tool and a platform for news dissemination, too. While similar to Twitter in functionality, Weibo provides a distinguishing feature, comments, allowing users to form threaded con- versations around a single tweet. Our study focuses on this feature, and how it contributes to interactions and improves social engagement. We use analysis of comment interactions to uncover their role in social interactivity, and use comment graphs to demonstrate the structure of Weibo users interac- tions. Finally, we present a case study that shows the impact of comments in malicious user detection, a key application on microblogging systems. That is, using properties of com- ments significantly improves the accuracy in both modeling and detection of malicious users.

关键词： microblogs comments social and interactiongraph user behavior

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含多变流器的微电网建模与稳定性分析

电力系统自动化 2013年第6期37卷 12-17页

作者：马添翼金新民黄杏北京交通大学电气工程学院北京市100044

传统电力系统稳定性分析主要针对发电机进行建模,而微电网的稳定性分析需基于变流器进行建模,这种本质的区别使微电网必须重新确立适用于其稳定性分析的模型。文中根据变流器的控制特性将其划分为电压源和电流源2种类型,采用状态空间法... 详细信息

传统电力系统稳定性分析主要针对发电机进行建模,而微电网的稳定性分析需基于变流器进行建模,这种本质的区别使微电网必须重新确立适用于其稳定性分析的模型。文中根据变流器的控制特性将其划分为电压源和电流源2种类型,采用状态空间法建立了基于多变流器微电网的小信号模型,并通过节点功率计算法计算了其自治系统表达式,采用计算自治系统根轨迹的方法得到了微电网中参数与稳定性的关系。通过对比微电网系统时域仿真结果与文中的稳定性分析结果,说明了所建立模型的正确性。

关键词：微电网(微网) 电压源型变流器电流源型变流器下垂特性 PQ控制小信号模型稳定性

A new anti-hypoxia functional agent ——Schizophyllum commune fermented broth and its biochemical mechanisms

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Engineering Sciences 2013年第2期11卷 82-87页

作者： Hao Limin Lu Jike Wu tianyi Ba Jianming Guo Changjiang Qian Ping Yu Jianyong xing Xinhui The Quartermaster Equipment Institute of GLD of CPLA Department of Bioengineering Zhengzhou University High Altitude Medical Research Institute Department of Endocrinology Chinese PLA General Hospital Institute of Hygiene and Environmental Medicine Academy of Military Medical Sciences Department of Chemical Engineering and Technology Tsinghua University

In order to overcome hypoxia induced sickness, a stable source of anti-hypoxia functional agents, Sehizophyllum commune fermented broth has been developed in this study. Animal experiments were conducted to examine its anti-hypoxia activities and possible mechanisms involved. The acute hypoxic experiment showed that Sehizophyllum commune fermented broth could significantly prolong the survival time of mice. The underlying mechanisms were associated with improved energy metabolism based on a study carried out in rats exposed to a low pressure chamber simulating the low pressure environment of 8 000 m altitude. It was concluded that the Schizophyllum commune fermented broth was an effective anti-hypoxia functional agent and could be greatly bene- ficial to those living and working at high altitudes, such as people who reside in the reconstruction regions of Yushu.

关键词： altitude illness prevention and treatment anti-hypoxia aerobic metabolism glycogen adenosinetriphosphate (ATP)

Purification and characterization of schizophyllan from Schizophyllum commune

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Engineering Sciences 2013年第2期11卷 88-92页

作者： Hao Limin Zhang Jianchun Wu tianyi Zhang Jian Lu Jike Wang Qizhi Zhang Xiaojuan xing Xinhui The Quartermaster Equipment Institute of GLD of CPLA High Altitude Medical Research Institute Jiangsu Province Academy of Traditional Chinese Medicine Department of Bioengineering Zhengzhou University Department of Chemical Engineering and Technology Tsinghua University

The schizophyllan from Schizophyllum commune was purified and characterized. The crude schizo-phyllan was obtained from Schizophyllum commune fermentation broth by decoloration with activated carbon,followed by deproteinization with Sevag method and ethanol precipitation. The pure schizophyllan was obtained by gel filtration chromatography with Sephacryl S-500,and its molecular characteristics were examined. The result showed that the molecular weight was 3.8×104 ,and the schizophyllan consisted of glucose with β-(1→6)-glucosidic linkages.

关键词： schizophyllan Schizophyllum commune purification characterization