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The effects of parental relationships,and gender and grade differences on depressive disorder in Chinese adolescents:the evidence from multiple cross-sectional surveys(1999-2016)

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China Population and Development Studies 2019年第3期3卷 37-52页

作者： Limin Wang Yafeng zhang Hui Yin Zuoming zhang Yuchun Tao Ye Xu Lu Chen yongqing Feng Yixin liu Department of Health Education School of Public HealthHarbin Medical UniversityNo.157 Baojian RoadHarbin 150081China Department of Psychiatric The First Clinical Medical College of Harbin Medical UniversityNo.23 Post StreetHarbin 150001China

This study aims to investigate the impacts of parental relationships,gender,and grade differences on depressive disorder among Chinese adolescents over a time period of nearly 20 *** first survey took place in 1999 and involved 852 stu-dents;subsequent follow-up surveys took place in 2006,2009 and 2016,with 3345 students involved in *** disorder was measured by SCL-90-R(Chi-nese version).The surveys also collected social-demographic information about the *** indicators of parental relationships were examined-parental quarrels,parental disharmony and parental *** results show that gender was significantly associated with adolescents’depressive disorder and that there was a higher prevalence of depressive disorder among senior middle school students than among junior middle school students,except in *** parental rela-tionships were associated with high risks of depressive *** and 95%CI were adjusted for the survey years(1999,2006,2009,2016),school grades(junior or senior middle school students),gender(girls/boys),parental quarrels(yes/no),parental disharmony(yes/no),and parental divorce(yes/no).Logistic regres-sion indicated that parental divorce and gender were the two strongest predictors of the presence of depressive *** summary,there was a higher prevalence of depressive disorder among girls and senior middle school *** are vulnerable to depressive disorder in cases of parental ***,good parental relationships may be considered an important and necessary factor that affects the susceptibility of Chinese adolescents to depressive disorder.

关键词： Depressive disorder Parental relationships Gender difference Chinese adolescents

Evidence for bosonic mode coupling in electron dynamics of LiFeAs superconductor

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Chinese Physics B 2020年第10期29卷 90-95页

作者： Cong Li Guangyang Dai yongqing Cai Yang Wang Xiancheng Wang Qiang Gao Guodong liu Yuan Huang Qingyan Wang Fengfeng zhang Shenjin zhang Feng Yang Zhimin Wang Qinjun Peng Zuyan Xu Changqing Jin Lin Zhao X J Zhou Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China Beijing Academy of Quantum Information Sciences Beijing 100193China

Super-high resolution laser-based angle-resolved photoemission measurements are carried out on LiFeAs superconductor to investigate its electron dynamics. Three energy scales at ~ 20 meV, ~ 34 meV, and ~ 55 meV are revealed for the first time in the electron self-energy both in the superconducting state and normal state. The ~ 20 meV and ~ 34 meV scales can be attributed to the coupling of electrons with sharp bosonic modes which are most likely phonons. These observations provide definitive evidence on the existence of mode coupling in iron-based superconductors.

关键词： angle-resolved photoemission spectroscopy(ARPES) iron-based superconductor electron boson coupling

MIDC系统有功功率分配方式对受端交流系统网损的影响

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电力系统自动化 2007年第10期31卷 16-20页

作者：刘崇茹张伯明冯永青华北电力大学电力系统保护与动态安全监控教育部重点实验室北京市102206 清华大学电机系北京市100084 中国南方电网调度通信中心广东省广州市510623

对直流输电系统2种常用的运行模式进行分析,讨论了多馈入直流输电(MIDC)系统输送功率对受端交流系统网损的影响,提出了2种条件下网损灵敏度的计算方法,一种是保持MIDC系统输送通道总功率不变,另一种是MIDC系统各直流线路输送功率相互独... 详细信息

对直流输电系统2种常用的运行模式进行分析,讨论了多馈入直流输电(MIDC)系统输送功率对受端交流系统网损的影响,提出了2种条件下网损灵敏度的计算方法,一种是保持MIDC系统输送通道总功率不变,另一种是MIDC系统各直流线路输送功率相互独立。第2种情况下,需要采用负荷平衡方法进行修正。针对第1种情况,文中对功率的再分配进行了讨论,提出了一种有效的功率再分配方法来降低受端系统网络损耗。对加入了MIDC系统的IEEE118节点系统进行仿真的结果表明,优化后三馈入DC/AC的118节点交流系统网损平均降低0.97%。

关键词：多馈入直流输电系统灵敏度最优乘子牛顿-拉夫逊法电力系统

Influenza inactive virus vaccine with the fusion peptide(rTα1-BP5) enhances protection against influenza through humoral and cell-mediated immunity

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Influenza inactive virus vaccine with the fusion peptide(rT...

带有源电力滤波功能的三相光伏并网发电系统控制策略

第十三届全国免疫学学术大会

作者： Cong zhang Jiangfei Zhou Liangliang Chen yongqing liu Tengfei Shen Chen Wang College of Animal Science and Technology Henan University of Science and Technology

Background: Thymosin α1(Tα1) and Bursopentin(BP5) are both ***: To explore whether the thymosin α1-Bursopentin(rTα1-BP5) is an adjuvant or ***: The gene of Tα1-BP5 were cloned and to evaluate the immune adjuvant properties of rTα1-BP5, chickens were immunized with rTα1-BP5 combined with H9N2 avian influenza whole-inactivated virus(WIV).The titers of HI antibody, antigen-specific antibodies, AIV-neutralizing antibodies, levels of Th1-type cytokines(IFN-γ) and Th2-type cytokines(IL-4) and lymphocyte proliferation responses were ***: The gene of Tα1-BP5 in a recombinant prokaryotic expression plasmid was successfully expressed in *** *** found that rTα1-BP5 enhanced HI antibody and antigen-specific IgG antibodies titers, increased the level of AIV-neutralizing antibodies, induced the secretion of Th1-and Th2-type cytokines, and promoted the proliferation of T and B ***, virus challenge experiments confirmed that rTα1-BP5 contributed to inhibition replication of the virus(H9N2 AIV(A/chicken/Jiangsu/NJ07/05) from chicken ***: Altogether, these findings suggest that rTα1-BP5 is a novel adjuvant suitable for H9N2 avian influenza vaccine.

关键词： Thymosin α1(Tα1) Bursopentin(BP5) fusion peptide avian influenza vaccine adjuvant

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电工技术学报 2010年第9期25卷 163-169页

作者：杜春水张承慧刘鑫正陈阿莲山东大学控制科学与工程学院济南250061

针对光伏并网发电逆变器由于昼夜、天气阴晴变化导致其利用率低的问题,提出了一种基于负载类型辨识和考虑负载轻重的三相光伏并网发电和有源电力滤波统一控制策略,并给出了指令电流合成方法。该策略在保证最大光伏电能并网的同时,实现... 详细信息

针对光伏并网发电逆变器由于昼夜、天气阴晴变化导致其利用率低的问题,提出了一种基于负载类型辨识和考虑负载轻重的三相光伏并网发电和有源电力滤波统一控制策略,并给出了指令电流合成方法。该策略在保证最大光伏电能并网的同时,实现了对负载谐波与无功电流的最佳补偿,尤其轻载时无需谐波电流检测,极大地提高了系统的响应速度。该系统基于DC/DC/AC高频链电路结构,克服了传统光伏并网发电系统中工频变压器耗材严重的不足。用Matlab/Simulink对提出的控制策略进行建模仿真,实验结果证明了该策略的有效性。

关键词：光伏并网发电有源电力滤波谐波检测负载类型辨识限幅算法

海洋4A散射计幅相校正算法FPGA优化实现

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系统工程与电子技术 2024年第8期46卷 2554-2562页

作者：刘永庆刘鹏云日升张祥坤王特中国科学院国家空间科学中心中国科学院微波遥感技术重点实验室北京100190 中国科学院大学电子电气与通信工程学院北京100048

海洋4A散射计将是世界上首个采用相控阵数字波束合成体制的星载微波散射计。其中,相控阵散射计高精度测量的实现依赖于散射计系统中各通道的一致性,因此需要实时对各通道的幅度和相位进行校正,以确保阵列能够正确地合成所需的波束。针... 详细信息

海洋4A散射计将是世界上首个采用相控阵数字波束合成体制的星载微波散射计。其中,相控阵散射计高精度测量的实现依赖于散射计系统中各通道的一致性,因此需要实时对各通道的幅度和相位进行校正,以确保阵列能够正确地合成所需的波束。针对此问题,提出了一种相控阵散射计通道幅相实时校正算法,所提算法采用现场可编程门阵列(field-programmable gate array,FPGA)实现,利用FPGA的并行处理能力和高速性能,对接收到的信号进行实时处理,实现了通道的幅度和相位校准。仿真、FPGA硬件调试以及实测数据分析表明,所提算法能够有效地对通道进行幅相校正,其校正的幅度和相位平均误差小于1%;所提算法提高了数字波束合成的性能,为相控阵散射计的高精度测量提供了可行性。

关键词：海洋4A卫星现场可编程门阵列相控阵散射计幅相校正算法

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Effectively enhanced photoluminescence of CePO_(4):Tb^(3+)nanorods combined with carbon dots

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Journal of Rare Earths 2022年第7期40卷 1007-1013页

作者： Yanyan Wang Dan Yue Boshi Tian Weidong Li Bing zhang liu Yang Yue Li Zhenling Wang Yilei zhang Henan International Joint Laboratory of Rare Earth Composite Materials College of Materials EngineeringHenan Key Laboratory of Electronic Ceramic Materials and ApplicationHenan University of EngineeringXinzheng 451191China College of Chemistry Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Rare Earth Functional Materials Zhoukou Normal UniversityZhoukou 466001China Civil&Mechanical Engineering University of CanterburyChristchurch8140New Zealand

CePO_(4):Tb^(3+)nanorods were successfully obtained via a simple hydrothermal method and combined with carbon dots(CDs)to obtain CDs@CePO_(4):Tb^(3+)*** to the combination of CDs,the emission intensity of CDs@CePO_(4):Tb^(3+)nanorods increases about 92 times,compared with that of CePO_(4):Tb^(3+)*** combination of CDs and CePO_(4):Tb^(3+)nanorods was confirmed by Fourier transform infrared spectroscopy(FTIR),transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS)and so *** mechanism of luminescence enhancement may be attributed to some aspects:the formation of hexagonal phase results in the increase of crystal field symmetry,and the energy transfer among CDs,Ce^(3+)and Tb^(3+)ions,which causes the Tb^(3+)ions in CDs@CePO_(4):Tb^(3+)nano rods to obtain mo re excited energy and less non-radiative atte nuation co mpared to CePO_(4):Tb^(3+)nano *** luminescence enhancement strategy through combination of CDs would provide a simple and effective approach for other rare earth ions doped luminescent materials.

关键词： CePO_(4) Rare earth ions Doping Carbon dots Photoluminescence enhancement

微波场作用下Y_2O_2S:Tb绿色荧光粉的快速合成及其发光特性

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稀有金属材料与工程 2007年第9期36卷 1657-1660页

作者：翟永清刘元红李常娥张越河北大学河北保定071002

采用微波法快速合成了Y2O2S：Tb绿色荧光粉。用X射线衍射（XRD）仪、扫描电镜（SEM）、荧光分光光度计等对合成产物的相结构、形貌、以及发光特性进行了研究。结果表明：材料的晶体结构为六方晶系，与Y2O2S相同。颗粒的形貌为类球形，... 详细信息

采用微波法快速合成了Y2O2S：Tb绿色荧光粉。用X射线衍射（XRD）仪、扫描电镜（SEM）、荧光分光光度计等对合成产物的相结构、形貌、以及发光特性进行了研究。结果表明：材料的晶体结构为六方晶系，与Y2O2S相同。颗粒的形貌为类球形，分散性很好，平均晶粒尺寸在300nm左右。发射光谱由384，418，439，460，475，498，547，590，624nm等一系列窄带发射峰组成，归属于Tb^3＋从^5D3，^5D4到^7FJ（J=0～6）的跃迁。研究发现Tb的掺杂浓度对样品的发射光谱有着很重要的影响，当其浓度为0．5％（摩尔分数，下同）时，^5D3→^7FJ的蓝光发射发生猝灭，当其浓度为9％时，^5D4→^7FJ的绿光发射发生猝灭。

关键词： Y2O2S:Tb 微波法激发光谱发射光谱浓度猝灭

The Clinical Features of AChRab positive Myasthenia Gravis Patients from Henan Province,China

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The Clinical Features of AChRab positive Myasthenia Gravis P...