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Structure of Ge Isotopes in the Microscopic Interacting Boson Model With Two-Quasiparticle States

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Chinese journal of nuclear physics 1997年第1期19卷 12-15页

作者： Snag, Jianping Shi, Zhuyi zhang, zhanjun Liu, Yong Wuhan Univ Wuhan China

The spectrum structure of Ge isotopes is studied in the framework of a microscopicneutron-proton interacting boson model with two quasiparticle *** built upon bothneutron and proton(g9/2)~2 configurations are *** good... 详细信息

关键词： Spectrum structure Ge isotopes Microscopic IBM-2 plus 2q. p

Baicalin and jasminoidin effects on gene expression and compatibility in the hippocampus following focal cerebral ischemia

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Neural Regeneration Research 2011年第3期6卷 165-170页

作者： Guo, Lin Meng, Fanyun zhang, Guodong Zhao, Jing zhang, zhanjun Zhou, Caixiu Wang, Zhong China Acad Chinese Med Sci Inst Basic Res Clin Med Beijing 100700 Peoples R China Tianjin Univ Tradit Chinese Med Inst Acupuncture Affiliated Hosp 1 Tianjin 300193 Peoples R China Beijing Normal Univ Inst Nat Med & Chinese Med Resources Beijing 100875 Peoples R China Beijing Normal Univ Natl Key Lab Cognit Neurosci & Learning Beijing 100875 Peoples R China Tianxin Hosp Zhuzhou 412001 Hunan Peoples R China

The compound traditional Chinese medicine Qingkailing, which is an ingredient used to treat cerebral ischemia, has been limited to studies concerning single genes or single pathways. Interactions and pharmacological mechanisms of the compound ingredients （baicalin and jasminoidin） remain poorly understood. In the present study, baicalin and jasminoidin, as well as the combination, were used to separately treat mouse models of cerebral ischemia, cDNA microarray analyses of 374 cerebral ischemia-related genes were utilized to determine changes in gene-expression profiles. Arraytrack 3.40 and Ingenuity Pathway Analysis （IPA） databases were utilized to analyze changes in gene molecular functions and network path functions. Baicalin or jasminoidin alone effectively reduced infarct area, and the combination resulted in significantly better outcomes. IPA showed inhibited cell apoptosis in the baicalin group and Ca^2＋ channel regulation in the jasminoidin group. The combination of baicalin and jasminoidin activated HTR3A and F5 expression, regulated Ca^2＋ channels, activated kappa light polypeptide gene enhancer inhibitor IKBKG in B cells to control IkB kinase/nuclear factor-kB cascade, suppressed activation of inflammatory cytokine interleukin-6 receptors and activated transduction of guanine-nucleotide- binding protein （G protein） signal. Results suggested that the combination of baicalin and jasminoidin resulted in similar molecular mechanisms to baicalin and jasminoidin alone. However, novel pharmacological actions of compatibility were detected, demonstrating significant protection against cerebral ischemia.

关键词： baicalin compatibility focal cerebral ischemia/reperfusion gene network jasminoidin traditional Chinese medicine

Alkoxy substituted benzodithiophene-alt-fluorobenzotriazole copolymer as donor in non-fullerene polymer solar cells

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Science China Chemistry 2016年第10期59卷 1317-1322页

作者： Haijun Bin Lian Zhong Zhi-Guo zhang Liang Gao Yankang Yang Lingwei Xue Jing zhang zhanjun zhang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

A new benzodithiophene （BDT）-alt-fluorobenzotriazole （FBTA） D-A copolymer J40 was designed and synthesized by introducing 2-octyldodecyloxy side chains on its BDT units, for expanding the family of the BDT- alt-FBTA-based copolymers and investigating the side chain effect on the photovoltaic performance of the polymer in non-fullerene polymer solar cells （PSCs）. J40 exhibits complementary absorption spectra and matched electronic energy levels with the n-type organic semiconductor （n-OS）（3,9-bis（2-methylene-（3-（1,1-dicyanomethylene）-indanone））-5,5,11,11-tetrakis（4-hexylphenyl）-dithieno[2,3-d：2＇,3＇-d＇]-s- indaceno[1,2-b：5,6-b＇]dithiophene）（ITIC） acceptor, and was used as polymer donor in the non-fullerene PSCs with ITIC as acceptor. The power conversion efficiency （PCE） of the PSCs based on J40：ITIC （1：1, w/w） with thermal annealing at 120 ~C for l0 min reached 6.48% with a higher open-circuit voltage （Voc） of 0.89 V. The high Voc of the PSCs is benefitted from the lower-lying highest occupied molecular orbital （HOMO） energy level of J40. Although the photovoltaic performance of the polymer J40 with alkoxy side chain is lower than that of J60 and J61 with alkylthio-thienyl conjugated side chains, the PCE of 6.48% for the J40-based device is still a relatively higher photovoltaic efficiency in the non-fullerene PSCs reported so far. The results indicate that the family of the BDT-alt-FBTA-based D-A copolymers are high performance polymer donor materials for non-fullerene PSCs and the side chain engineering plays an important role in the design of high performance polymer donors in the non-fullerene PSCs.

关键词： non-fullerene polymer solar cells conjugated D-A copolymers n-type organic semiconductor ITIC

Chlorinated polymerized small molecule acceptor enabling ternary all-polymer solar cells with over 16.6% efficiency

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Science China Chemistry 2022年第5期65卷 954-963页

作者： Ke Hu Jiaqi Du Can Zhu Wenbin Lai Jing Li Jingming Xin Wei Ma zhanjun zhang Jinyuan zhang Lei Meng Yongfang Li School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

Recently,all-polymer solar cells(all-PSCs) based on polymerized small molecule acceptors(PSMAs) have achieved significant *** blending has proven to be an effective strategy to further boost the power conversion efficiency(PCE) of the ***,a new A-DA′D-A small-molecule acceptor-based PSMA(named as PYCl-T) was designed and synthesized,which possesses similar polymer backbone with the widely used PY-IT,but with chlorine substitution on the A-end groups in the A-DA′D-A ***-T was then employed as the third component into the PM6:PY-IT system and the ternary all-PSCs based on PM6:PY-IT:PYCl-T demonstrated a high PCE of 16.62%(certified value of 16.3%).Moreover,the PCE of 15.52% was realized in the enlarged ternary all-PSCs with effective area of 1 cm^(2),indicating the great potential in large-scale ***,the optimized ternary blend films of PM6:PY-IT:PYCl-T show excellent thermal stability at 150 ℃.This work demonstrates that the utilization of a ternary blend system involving two well-compatible PSMA polymer acceptors is an effective strategy to boost the performance of the all-PSCs.

关键词： all-polymer solar cells polymerized small molecular acceptors chlorine substitution ternary all polymer solar cells stability

Preparation of Sodium Cobalt Tetracarbonyl and Optimization of Process Conditions for Hydroesterification of Ethylene Oxide

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China Petroleum Processing & Petrochemical Technology 2018年第3期20卷 78-84页

作者： Wen Liyuan zhang zhanjun Chen Xiaoping Wang Shiqin Yu Wenli Institute of Industrial Catalysis Guangdong University of Petrochemical Technology Maoming 525000 National Quality Supervision and Inspection Center of Dangerous Chemicals (Guangdong) Maoming 525000

In this paper, sodium cobalt tetracarbonyl （NaCo（CO）4） was synthesized by using sodium dithionite and zinc powder as the reduction system and cobalt hexahydrate acetate as the precursor in the presence of methanol solvent. Methyl 3-hydroxypropionate was synthesized via hydroesterification of ethylene oxide （EO） catalyzed by NaCo（CO）4. The influencing factors on the reaction results were discussed, including the different ligands, the molar ratio of solvent and ethylene oxide, the reaction temperature, the reaction time, and the reaction pressure. An optimal catalytic system was obtained by using 3-hydroxypyridine as the ligoad under reaction conditions covering a reaction temperature 65 ℃, a reaction time of 7 h, a reaction pressure of 6 MPa, and a methoaol/EO molar ratio of 3：2. Under the optimal conditions, the conversion of ethylene oxide was equal to 97.86%, while the selectivity and yield of methyl 3-hydroxypropionate reached 88.19% and 86.30%, respectively. Finally, the reaction mechanism of hydroesterification of ethylene oxide catalyzed by NaCo（CO）4 was proposed.

关键词： sodium cobalt tetracarbonyl optimization hydroesterification reaction mechanism

Experimental Study of Monitoring and Controlling of Composite Cure Process in Autoclave Featured with Fiber Optic Sensor

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Journal of Materials Science & Technology 2001年第4期17卷 449-452页

作者： Boming zhang, zhanjun WU , Dianfu WANG and Shanyi DU Center for composite, Harbin Institute of Technology Harbin 150001, China Cent. for Composite Harbin Inst. of Technol. Harbin 150001 China

With the aid of the latest fiber optic sensing technology parameters in the cure process of ther- mosetting resin-matrix composite, such as temperature, viscosity,void and residual stress, can be monitored entirely and *** this paper, experiment results of viscosity measurement in composite cure process in autoclave using fiber optic sensors are presented. Based on the sensed information, a computer program is utilized to control the cure process. With this technology, the cure process becomes more apparent and controllable, which will greatly improve the cured products and reduce the cost.

关键词： Experimental Study of Monitoring and Controlling of Composite Cure Process in Autoclave Featured with Fiber Optic Sensor

Effects of Cure Pressure Induced Voids on the Mechanical Strength of Carbon/Epoxy Laminates

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Journal of Materials Science & Technology 2005年第1期21卷 87-91页

作者： Ling LIU, Boming zhang, zhanjun WU and Dianfu WANGCenter for Composite Materials, Harbin Institute of Technology, Harbin 150001, ChinaProf., Ctr. for Composite Mat. Harbin Inst. of Technol. Harbin 150001 China

This work aims at designing a set of curing pressure routes to produce laminates with various void contents. The effects of various consolidation pressures resulting in different void contents on mechanical strength of carbon/epoxy laminates have been examined. Characterization of the voids, in terms of void volume fraction, void distribution, size, and shape, was performed by standard test, ultrasonic inspection and metallographic analysis. The interlaminar shear strength was measured by the short-beam method. An empirical model was used to predict the strength vs porosity. The predicted strengths conform well with the experimental data and voids were found to be uniformly distributed throughout the laminate.

关键词： Carbon/epoxy laminates Autoclave curing Void Mechanical strength

Senegenin promotes in vitro proliferation of human neural progenitor cells

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Neural Regeneration Research 2011年第3期6卷 171-176页

作者： Shi, Fang Liang, Zhigang Guo, Zixuan Li, Ran Yu, Fen zhang, zhanjun Wang, Xuan Wang, Xiaomin Capital Med Univ Dept Physiol Key Lab Neurodegenerat Disorders Minist Educ Beijing 100069 Peoples R China Beijing Normal Univ State Key Lab Cognit Neurosci & Learning Beijing 100875 Peoples R China

Senegenin, an effective component of Polygala tenuifolia root extract, promotes proliferation and differentiation of neural progenitor cells in the hippocampus. However, the effects of senegenin on mesencephalon-derived neural progenitor cells remain poorly understood. Cells from a ventral mesencephalon neural progenitor cell line （ReNcell VM） were utilized as models for pharmaceutical screening. The effects of various senegenin concentrations on cell proliferation were analyzed, demonstrating that high senegenin concentrations （5, 10, 50, and 100 μmol/L）, particularly 50 μmol/L, significantly promoted proliferation of ReNcell VM cells. In the mitogen-activated protein kinase signal transduction pathway, senegenin significantly increased phosphorylation levels of extracellular signal-regulated kinases. Moreover, cell proliferation was suppressed by extracellular signal-regulated kinase inhibitors. Results suggested that senegenin contributed to in vitro proliferation of human neural progenitor cells by upregulating phosphorylation of extracellular signal-regulated kinase.

关键词： senegenin neural progenitor cells cell proliferation mitogen-activated protein kinases

Short-axis substitution approach on ladder-type benzodithiophene- based electron acceptor toward highly efficient organic solar cells

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Science China Chemistry 2018年第11期61卷 1405-1412页

作者： Jiu-Dong Lin Lian Zhong Fu-Peng Wu Yongxi Li Yi Yuan Haijun Bin zhanjun zhang Feng Liu Jian Fan Zhi-Guo zhang Liang-Sheng Liao Zuo-Quan Jiang Yongfang Li Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou 215123 China University of Chinese Academy of Sciences Beijing 100049 China Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Department of Physics and Astronomy and Collaborative Innovation Center of IFSA (CICIFSA) Shanghai Jiaotong University Shanghai 200240 China

Short-axis substitution, as an effective way to change the optical and electronic properties of the organic semiconductors for organic photovoltaics(OPVs), is a readily approach to modify non-fullerene acceptors, especially for the linear fused rings system. Here, two new fused-ring electron acceptors(CBT-IC and SBT-IC) were designed and developed by short-axis modification based on the dithienyl[1,2-b:4,5-b′]benzodithiophene(BDCPDT) system. Combined with a medium bandgap polymer donor J71, both of the OPV devices exhibit high power conversion efficiency(PCE) over 11%, and ～70% external quantum efficiencies. To better understand how this kind of substitution affects the BDCPDT based acceptors, a comparative analysis is also made with the the plain acceptor BDT-IC without this modification. We believe this work could disclose the great potential and the versatility of BDCPDT block and also enlighten other ladder-type series for further optimization.

关键词： organic photovoltaics electron acceptors ladder-type unit benzo[1,2-b,4,5-b']dithiophene short-axis