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Metal-organic frameworks with dinuclear metal centers for synergistically boosting CO2 photoreduction

Science China Chemistry 2025年第1期 201-208页

作者： Hui-Feng Wang wen-jie shi Yu-Xin Yang Bao-Xia Dong Tong-Bu Lu Di-Chang Zhong School of Chemistry and Chemical Engineering Yangzhou University Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology

Dinuclear metal synergistic catalysis （DMSC） has been proved powerful in boosting CO2reduction,while this has not been achieved in heterogeneous catalysts with long-range order *** this study,we,by introduction of metal catalytic centers into an indium-based metal-organic framework （MOF）,obtained a series of isostructural In-MOFs,including three MOFs with mononuclear metal catalytic center （M-In）,three MOFs with dinuclear homometallic catalytic centers （MM-In）,and three MOFs with dinuclear heterometallic catalytic centers (MM’-In,M/M’=Co（II）,Ni（II）,Zn（II）).It was found that all these MOFs can serve as catalysts for photochemical CO2reduction to *** with M-In,the catalytic activities of MM-In were obviously enhanced,and that of MM’-In was further significantly *** example,the CO yield of Co Zn-In reaches a record value of 12,700μmol g-1h-1,which is 4.0,8.1,9.4,and 18.6-fold higher than that of Co Co-In,Zn Zn-In,Co-In,and Zn-In,***,the catalytic activities of Co Ni-In and Ni Zn-In also show different fold increase than those of corresponding dinuclear homometallic and mononuclear metallic *** results of control experiments and theoretical calculation reveal that the higher catalytic activities of MM-In over M-In can be ascribed to the DMSC effect,and the higher catalytic activity of MM’-In over MM-In can be ascribed to the strengthened DMSC *** work reveals the relationship between DMSC effect and bimetal centers in CO2reduction,which provides new insights into the DMSC and paves a new way to design highly active catalysts for photochemical CO2reduction.

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Generalized Polynomial Chaos for Nonlinear Random Pantograph Equations

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Acta Mathematicae Applicatae Sinica 2016年第3期32卷 685-700页

作者： wen-jie shi Cheng-jian ZHANG School of mathematics and statistics Huazhong University of Science and Technology School of Mathematics and Computer Science Wuhan Textile University

This paper is concerned with the application of generalized polynomial chaos （gPC） method to nonlinear random pantograph equations. An error estimation of gPC method is derived. The global error analysis is given for the error arising from finite-dimensional noise （FDN） assumption, projection error, aliasing error and discretization error. In the end, with several numerical experiments, the theoretical results are further illustrated.

关键词： generalized polynomial chaos random pantograph equations error estimation finite-dimensional noise

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Bottom-up construction of mesoporous supramolecular isomers based on a Pd_(3)L_(6) triangular prism as templates for shape specific aggregation of polyiodide

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Nano Research 2022年第3期15卷 2655-2660页

作者： wen-jie shi Xin Li Peng Li Ying-Feng Han Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry and Materials ScienceNorthwest UniversityXi’an 710127China Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of ChemistryFudan UniversityShanghai 200438China

Bottom-up construction of highly complex architecture from simple components remains one of the long-standing challenges in *** two supramolecular isomers based on large trigonal prismatic Pd_(3)L^(1)_(6)building block are ***,they can be controllably obtained by adjusting the solute concentration during crystal ***,the square shape crystals,α-[Pd_(3)L^(1)_(6)](PF_(6))_(12)in the cubic system with I143 m space group,can be isolated from a high-concentration solution of Pd_(3)L^(1)_(6).Interestingly,a mesoporous cage assembled from eight Pd_(3)L^(1)_(6)units with a diameter of 24Åis observed in the crystal *** the low-concentration solution of Pd_(3)L^(1)_(6),the rectangular shape crystalsβ-[Pd_(3)L^(1)_(6)](PF_(6))_(12)are obtained,which crystallize in the hexagonal system with P 63/m space group,and display two-dimension packing pattern and one-dimension mesoporous channels(diameter ca.22Å)along the c ***,the two supramolecular isomers were used as nanoporous reactors to induce the specific formation of polyiodides with different compositions and shapes as evidenced from single crystal X-ray diffraction *** findings provide a reference in targeting functional crystalline mesoporous supramolecular materials from a single complex building unit.

关键词： supramolecular isomers crystal growth self-assembly polyiodide concentration effect mesoporous supramolecular material

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Diagnostic value of four serum exosome microRNAs panel for the detection of colorectal cancer

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World Journal of Gastrointestinal Oncology 2021年第8期13卷 970-979页

作者： Lei Han wen-jie shi Yi-Bin Xie Zhi-Guo Zhang Department of Oncology Beijing Daxing District People’s HospitalBeijing 102600China Department of Medicine Innovation Research Chinese PLA General HospitalBeijing 100853China Department of Pancreatic and Gastric Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100121China

BACKGROUND Early detection,early diagnosis,and early treatment are currently accepted methods that can effectively improve the efficacy of colorectal cancer(CRC)*** were demonstrated to be potential tumor molecular *** To evaluate the diagnostic value of CRC by detecting four exosomal microRNAs(miRNAs)(miR-15b,miR-16,miR-21,and miR-31)that were demonstrated to have potential diagnostic value in *** Relative expression levels of miR-15b,miR-16,miR-21,and miR-31 in 123 CRC,117 colorectal adenoma,and 150 healthy controls were detected,and single and panel models were *** 2-ΔΔCt method was used to calculate the relative expression of miRNA compared to the internal control(U6).Eighty-one CRC patients,67 colorectal adenoma patients,and 90 healthy controls were used for *** Compared to the healthy control group,the best indicator of the four miRNAs was miR-15b,and the sensitivity and specificity were 81.33%and 91.80%,*** miR-15b,miR-21,and miR-31 individually,the sensitivity and specificity were 91.95%and 97.62%,95.06%and 94.44%,*** to the colorectal adenoma group,miR-15b,miR-16,and miR-21 in the CRC group showed significant differences(P<0.05).The best single indicator was miR-16,with a sensitivity and specificity of 79.05%and 71.55%.The sensitivity and specificity of a panel that included miR-15b,miR-16,and miR-21 were 81.21%and 81.03%,and 85.19%and 82.09%,respectively,in the *** We built and validated a diagnostic model containing miR-15b,miR-21,and miR-31 expression levels to discriminate the healthy control group and CRC group,and its sensitivity and specificity were 95.06%and 94.44%,*** miR-15b,miR-16,and miR-21 panel was used to discriminate the colorectal adenoma group and CRC group with a sensitivity and specificity of 85.19%and 82.09%,respectively.

关键词： Colorectal cancer Exosome Serum miRNAs Biomarker

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Differences in microstructure and properties between selective laser melting and traditional manufacturing for fabrication of metal parts： A review

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Frontiers of Mechanical Engineering 2015年第2期10卷 111-125页

作者： Bo SONG Xiao ZHAO Shuai LI Changjun HAN Qingsong WEI shifeng wen jie LIU Yusheng shi State Key Laboratory of Materials Processing and Die & MouldTechnology Huazhong University of Science and Technology Wuhan430074 China

Selective laser melting （SLM）, as one of the additive manufacturing technologies, is widely investigated to fabricate metal parts. In SLM, parts are manufactured directly from powders in a layer-by-layer fashion; SLM also provides several advantages, such as production of complex parts with high three-dimensional accuracy, compared with other additive manufacturing technologies. Therefore, SLM can be applied in aeronautics, astronautics, medicine, and die and mould industry. However, this technique differs from traditional methods, such as casting and forging; for instance, the former greatly differs in terms of microstructure and properties of products. This paper summarizes relevant studies on metal material fabrication through SLM. Based on a work completed in Huazhong Univ. Sci Tech., Rapid Manuf. Center （HUST-RMC） and compared with characteristics described in other reported studies, microstructure, properties, dimensional accuracy, and application of SLM are presented.

关键词： selective laser melting microstructure performance application

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Construction of Genetic Linkage Map Based on SSR Markers in Peanut(Arachis hypogaea L.)

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Agricultural Sciences in China 2008年第8期7卷 915-921页

作者： HONG Yan-bin LIANG Xuan-qiang CHEN Xiao-ping LIU Hai-yan ZHOU Gui-yuan LI Shao-xiong wen shi-jie Crops Research Institute Guangdong Academy of Agricultural Sciences Guangzhou 510640 P.R.China

Molecular genetic maps of crop species can be used in a variety of ways in breeding and genomic research such as identification and mapping of genes and quantitative trait loci （QTLs） for morphological, physiological and economic traits of crop species. However, a comprehensive genetic linkage map for cultivated peanut has not yet been developed due to the extremely low frequency of DNA polymorphism in cultivated peanut. In this study, 142 recombinant inbred lines （RILs） derived from a cross between Yueyou 13 and Zhenzhuhei were used as mapping population in peanut （Arachis hypogaea L.）. A total 652 pairs of genomic-SSR primer and 392 pairs of EST-SSR primer were used to detect the polymorphisms between the two parents. 141 SSR primer pairs, 127 genomic-SSR and 14 EST-SSR ones, which can be used to detect polymorphisms between the two parents, were selected to analyze the RILs population. Thus, a linkage genetic map which consists of 131 SSR loci in 20 linkage groups, with a coverage of 679 cM and an average of 6.12 cM of inter-maker distance was constructed. The putative functions of 12 EST-SSR markers located on the map were analyzed. Eleven showed homology to gene sequences deposited in GenBank. This is the first report of construction of a comprehensive genetic map with SSR markers in peanut （Arachis hypogaea L.）. The map presented here will provide a genetic framework for mapping the qualitative and quantitative trait in peanut.

关键词： peanut (Arachis hypogaea L.) SSR genetic linkage map

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REACTION KINETICS OVER PRECIPITATED Fe/Mn/K CATALYST FOR THE FISCHER-TROPSCH SYNTHESIS

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Journal of Energy Chemistry 1995年第3期 311-319页

作者： SHEN wen-jie YAN shi-Run ZHOU Jing-Lai ZHANG Bi-JiangInstitute of Coal Chemistry, Academia Sinica Taiyuan, Shanxi 030001

The kinetics of the Fischer-Tropsch Synthesis reaction is studied in an internally recycled reactor (CSTR) over a commercial, precipitated Fe/Mn/K catalyst. Kinetic data are obtained with 1 47-4.04 H2/CO feed gas over a temperature range of 265-320℃, a pressure range of 1.0-2.6 MPa, and a space velocity range of 300-800 h-1 . The kinetic model which fits the experimental data well is the same as that of the intrinsic kinetics, i.e. -RH2+CO=kPH2PCO/(PCO+bPH2O, where k is the kinetic constant for the rate-determining step and b is a function of temperature only. This model may be derived by assuming that the rate-determining step is the hydrogenation of adsorbed CO according to the enol mechanism. It is found that the CO usage ratio is probably independent of synthesis gas conversion and total pressure, and the catalyst shows high water-gas-shift activity.

关键词： Fischer-Tropsch Synthesis reaction kinetics Fe/Mn/K catalyst

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接地夹压延、冲切级进模

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模具技术 2005年第2期 22-27页

作者：温世杰沈飞通路地板厂辽宁沈阳110034

压延、冲切接地夹传导元件是采用级进模具加工。使用一副模具连续冲切切缝;压延凸缘;校正凸缘、切齿、压下陷、冲切两侧外形;冲切小舌片;冲切大舌片;冲切两端外形。共分六个工位连续加工,成形完毕的冲压工艺。

关键词：接地夹冲压工艺级进模具

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高校“创业教育热”背后的冷思考

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大学教育科学 2017年第1期 104-109页

作者：刘文杰史秋衡北京航空航天大学高等教育研究所厦门大学教育研究院

我国高校创业教育在建设创新型国家、解决大学生就业难问题、实现经济发展方式转变的现实背景下应运而生。在中央政府战略方针指导下,各级政府给予了强有力的行政管控制度逻辑的推动,使创业教育迅速升温并席卷整个教育界。与此同时,高... 详细信息

我国高校创业教育在建设创新型国家、解决大学生就业难问题、实现经济发展方式转变的现实背景下应运而生。在中央政府战略方针指导下,各级政府给予了强有力的行政管控制度逻辑的推动,使创业教育迅速升温并席卷整个教育界。与此同时,高校创业教育在理论与实践层面却准备不足,并存在诸多争议,主要表现在创业教育内涵的"迷失"、创业教育目的的"缺失"和创业教育实施过程的"偏失"三个方面。在人才培养方面坚持以"创业培育"为主,在教育实施过程中注重创业精神教育,在体系构建过程中强调政校企协同发展,将是未来我国创业教育发展的理性选择。

关键词：人才培养模式高校创业教育创业精神大学生就业冷思考创业教育

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基于FPGA的数字超声内窥镜接收系统设计

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传感技术学报 2008年第8期21卷 1329-1332页

作者：温世杰鲁冬杰陈晓冬郁道银天津大学精密仪器与光电子工程学院教育部光电信息技术科学重点实验室天津300072

根据数字超声成像的要求和超声信号的特点,设计了由高速采样电路和FPGA正交解调电路组成的数字超声内窥镜接收系统。采样电路由AD8138和AD9235实现,对放大后的超声回波信号直接进行模数转换;FPGA利用内部RAM、乘法器、IP核和宏模块构建... 详细信息

根据数字超声成像的要求和超声信号的特点,设计了由高速采样电路和FPGA正交解调电路组成的数字超声内窥镜接收系统。采样电路由AD8138和AD9235实现,对放大后的超声回波信号直接进行模数转换;FPGA利用内部RAM、乘法器、IP核和宏模块构建数字正交解调电路,提取超声回波信号的幅度;获取的幅度信息经USB2.0接口电路送入计算机显示。对玻璃杯进行的静止扫描成像实验,验证了接收系统的小信号检测能力,可以检测到信噪比约为4dB的回波信号;对玻璃杯进行的旋转扫描成像实验,表明接收系统可用于数字超声内窥镜成像。

关键词：内窥镜超声信号正交解调 FPGA

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