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Birth Control and Family Planning in China

Women of China 1996年第12期 20-21页

作者： XIAO huan pan ZHONGMING

THIS year, Women of China asked two 30-year-old women from the Yimeng mountain area in Shandong Province about their chosen methods of birth control. Both women reported using intrauterine devices (IUDs), which they had placed by local gynecologists at the hospital 40 days after giving birth. Are these women aware of other contraceptive methods? Some rural women tell us they know of other methods such as oral contraception, contraceptive implants and tubal ligation.

关键词： In IUD Birth Control and Family Planning in China

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Theoretical prediction of cosmological constant ∧ in Veneziano ghost theory of QCD

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Frontiers of physics 2012年第4期7卷 471-480页

作者： Wei-Xing Ma Li-Juan Zhou Tong-Quan Yuan Jin-Song Peng Xiao Lu Ji-huan pan Guang-Xiong Peng Cheng-Ju Meng Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Department of Information and Computing Science Guangxi University of Technology Liuzhou 545006 China Department of Physics and Electronic Engineering HeChi University Yizhou 546300 China College of Physics and Technology Guangxi Normal University Guilin 5~100~ China

Based on the Veneziano ghost theory of QCD, we predict the cosmological constant A, which is related to energy density of cosmological vacuum by A = 3-8tG/pA. In the Veneziano ghost theory, the vacuum energy density PA is expressed by absolute value of the product of quark vacuum condensate and quark current mass： PA = 2g/Hclmq（OI ： qq ： 10）l- We calculate the quark local vacuum condensates （01 ： qq ： 10） by solving Dyson Schwinger Equations for a fully dressed confining quark propagator S/（p） with an effective gluon propagator G^b（q）. The quark current mass mq is predicted by use of chiral perturbation theory. Our theoretical result of A, with the resulting （01 ： qq ： ]0} = -（235 MeV）3 and light quark current mass rnq = 3.29 6.15 MeV, is in a good agreement with the observable of the A =10-52 m-2 used widely in a great amount of literatures. Keywords cosmological constant A, Veneziano sate, quantum chromodynamics （QCD） ghost theory of QCD, local quark vacuum conden-

关键词： cosmological constant A Veneziano ghost theory of QCD local quark vacuum conden-sate quantum chromodynamics (QCD)

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Consensus of double-integrator discrete-time multi-agent system based on second-order neighbors’ information

Consensus of double-integrator discrete-time multi-agent sys...

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第26届中国控制与决策会议

作者： huan pan Wenjuan Qiao School of Physics Electrical Information Engineering and Ningxia Key Laboratory of Intelligent Sensing for Desert Information Ningxia University

ISBN: (纸本)9781479937097

The consensus of double-integrator discrete-time multi-agent system is studied based on the second-order neighbors’ information in this paper. The comparison between the convergence rate of second-order neighbor protocol and the one of general protocol is analyzed. Considering there exists delay in communication, the consensus condition of double-integrator discrete-time multi-agent system with delay is derived by using LMI. Numerical examples are given to illustrate the effectiveness of the proposed methods.

关键词： Consensus Discrete multi-agent system Second-order neighbors’ information Delay

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Synchronization of perturbed chaotic systems via nonlinear control

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Journal of Central South University 2012年第10期19卷 2803-2809页

作者：郭凌年晓红潘欢 School of Information Science and Engineering Central South University

Chaos synchronization of systems with perturbations was investigated.A generic nonlinear control scheme to realize chaos synchronization of systems was *** control scheme is flexible and practicable,and gives more freedom in designing controllers in order to achieve some desired *** the aid of Lyapunov stability theorem and partial stability theory,two cases were presented:1) Chaos synchronization of the system without perturbation or with vanishing perturbations;2) The boundness of the error state for the system with nonvanishing perturbations satisfying some ***,several simulations for Lorenz system were provided to verify the effectiveness and feasibility of our *** numerically with the existing results of linear feedback control scheme,the results are sharper than the existing ones.

关键词： chaotic system synchronization perturbations nonlinear control scheme linear feedback scheme

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Studies on the Aromatic Dihalocarbonyl Ylides and Their Deoxygenation

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Chemical Research in Chinese Universities 1989年第1期5卷 41-49页

作者： huan Zhenwei, pan Yinming, Qu Xiaosu and Gao Zhenheng (Department of Chemistry, Nankai University, Tianjin)

The deoxygenation reaction of heptanones, cycloheptanone, cycloheptatrienone or substituted cycloheptatrienone with dihalo-carbene results in carbon monoxide and corresponding halides. The yield of CO produced by 2 , 4 , 6-triphenylcycloheptatrienone is 2.6-3.5 times as high as that produced by the saturated heptanones. The structures, energies, charge distributions, bond orders, and other relative parameters of the dihalocarbonyl glides were calculated by using the SCF-MNDO method. The obtained data reveal that the ylides from cycloheptatrienone have aromatic structure and are different from those produced from saturated cycloheptanone. The reactivities of the dihalocarbonyl ylides are discussed. It is proposed that this aromatic structure should be responsible for the high yield of CO from the reaction of cycloheptatrienone with dihalocarbene.

关键词： Carbonyl ylide Deoxygenation Aromaticity.

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Research on an integrated assessment method for critical edges in power grids

Research on an integrated assessment method for critical edg...

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第43届中国控制会议

作者： huan pan Mengna Sun Hu Li School of Electronics and Electrical Ningxia University

In order to identify the critical edges in the grid more accurately, this paper synthesizes the structural vulnerability and state vulnerability of the grid to evaluate the grid edges comprehensively. Combining the improved power flow betweenness, weighted power flow transfer entropy, and variance loading ratio, the importance weighting metric of the grid edges is proposed, and the critical edges in the grid are obtained by rationally setting the optimal weights. Through simulation tests on the IEEE 39-node system, the top ten edges with comprehensive weighted values in the system are obtained,and the validity of the proposed comprehensive weighting metric is verified under different attacks.

关键词： power grid power edge structural vulnerability state vulnerability

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次贷危机下境内外证券市场风险传导效应研究

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山东社会科学 2009年第6期 76-79,67页

作者：潘焕焕中国社会科学院金融研究所北京100732

本文利用MEM模型研究了次贷危机前后美国、香港和大陆证券市场之间的风险传导效应,并进行了对比分析。研究表明,危机发生前,美国、香港和大陆证券市场之间存在较少的风险传导。具体说,只有大陆对美国存在风险传导,香港市场则相对独立。... 详细信息

本文利用MEM模型研究了次贷危机前后美国、香港和大陆证券市场之间的风险传导效应,并进行了对比分析。研究表明,危机发生前,美国、香港和大陆证券市场之间存在较少的风险传导。具体说,只有大陆对美国存在风险传导,香港市场则相对独立。三个市场间的相互作用并不十分显著。次贷危机发生后,美国、香港和大陆证券市场间均存在显著的相互风险传导作用。

关键词：次贷危机风险传导 MEM模型

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2,3,5,4’-Tetrahydroxystilbene-2-O-b-D-Glucoside modulates CHEK2 and CCND1 alternative splicing to inhibit MCF-7 cells proliferation

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Traditional Medicine Research 2024年第1期9卷 33-46页

作者： Hui Shen You-Zhi Zhang Peng-Yu Wang Shuo Zhang huan pan Bei-Bei Liu Long-Sheng Xu Jian-Fen Shen Department of Central Laboratory The First Affiliated Hospital of Jiaxing UniversityJiaxing 314000China School of Pharmacy Xianning Medical CollegeHubei University of Science and TechnologyXianning 437100China Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province Xianning Medical CollegeHubei University of Science and TechnologyXianning 437100China

Background:In our previous study,we observed a synergistic effect of 2,3,5,4’-Tetrahydroxystilbene-2-O-b-D-glucoside combined with adriamycin to induce apoptosis in MCF-7 breast cancer ***,the underlying mechanisms of epigenetic modifications,such as alternative splicing,have not been *** this study,we aimed to investigate the mechanism by which THSG inhibits MCF-7 cell proliferation using full-length transcriptome ***:First,cell viability was examined using the methyl thiazolyl tetrazolium method and full-length transcriptome sequencing was performed to identify genes and *** Ontology and Kyoto Encyclopedia of Genes and Genomes were used to identify the principal pathways and targets of *** cytometry analysis of cell cycle distribution was ***,the analysis of alternative splicing and domains of the key proteins was *** polymerase chain reaction and western blotting were performed for ***:THSG showed significant cytotoxic activity in MCF-7 ***-length transcriptome sequencing revealed differential alternative splicing with 173 upregulated and 263 downregulated *** analysis identified distinct differential expression of genes(CHEK2-211 and CCND1-201)involved in the cell cycle in the THSG-treated ***,alternative splicing types of CHEK2(mutually exclusive exon)and CCND1(intron retention).We found that THSG downregulated mRNA expression,as confirmed by quantitative polymerase chain reaction ***,protein structural analysis revealed that THSG treatment led to the generation of CHK2-211,which was the result of a mutation in the amino acid residues(GLU-150,ASN-151)of the CHEK2 domain(VAL-150,GLY-151).and CyclinD1-201 were obtained when an amino acid(ASP-267)in the domain was lost in ***,molecular docking analysis demonstrated that the domains of key proteins could bind THSG more effectively,with no difference in

关键词： THSG breast cancer full-length transcriptome sequencing alternative splicing

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