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Journal of Advanced Ceramics 2022年第12期11卷 1860-1872页

作者： Mingxin zhang Kai LIU xingmin zhang Bingbing WANG Xinru XU Xinxin DU Chao YANG Kewei zhang College of Materials Science and Engineering State Key Laboratory of Bio-Fibers and Eco-TextilesCollaborative Innovation Center for Marine Biomass FibersMaterials and Textiles of Shandong ProvinceQingdao UniversityQingdao 266071China

Traditional triethylamine(TEA)sensors suffer from the drawback of serious cross-sensitivity due to the low charge-transfer ability of gas-sensing ***,an advanced anti-interference TEA sensor is designed by utilizing interfacial energy barriers of hierarchical Bi_(2)O_(3)/WO_(3) *** from abundant slit-like pores,desirable defect features,and amplification effect of heterojunctions,the sensor based on Bi_(2)O_(3)/WO_(3) composite with 40%Bi_(2)O_(3)(0.4-Bi_(2)O_(3)/WO_(3))demonstrates remarkable performance in terms of faster response/recovery time(1.7-fold/1.2-fold),higher response(2.1-fold),and lower power consumption(30℃-decrement)as compared with the pristine WO_(3) ***,the composite sensor exhibits long-term stability,reproducibility,and negligible response towards interfering molecules,indicating the promising potential of Bi_(2)O_(3)/WO_(3) heterojunctions in anti-interference detection of low-concentration TEA in real *** work not only offers a rational solution to design advanced gas sensors by tuning the interfacial energy barriers of heterojunctions,but also provides a fundamental understanding of hierarchical Bi_(2)O_(3) structures in the gas-sensing field.

关键词： Bi_(2)O_(3)/WO_(3) heterojunctions hierarchical structures triethylamine(TEA) gas sensors

Synthesis and Biological Activity of Imidazo[4,5-c]quinoline Derivatives as PI3K/mTOR Inhibitors

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Chemical Research in Chinese Universities 2017年第6期33卷 895-902页

作者： LI Yanjie zhang xingmin NIU Shengxiu ZHAO Yanping YANG Lijuan SHAO Xiaowei WANG Ensi College of Pharmacy Jilin University Changchun 130021 P. R. China College of Pharmacy Changchun University of Traditional Chinese Medicine Changchun 130117 P. R. China Belting Foreland Pharma Biological Technology Co. Ltd. Beifing 101111 P. R. China

A series of mtidazo[4,5-c]qumoline derivatives（12a-12m） was synthesized with 2-amino-5-bromoben- zoic acid and 4-nitrophenylacetonitrile as starting materials, 6-bromo-4-chloro-3-nitroquinoline as intermediate and Suzuki reaction and closure of the imidazolinone ring with triphosgene as key steps. The structures of the key intermediate and target compounds were confirmed by means of 1H NMR, 13C NMR and HRMS. These compounds show an interesting kinase profile as dual PI3K/mTOR tool compounds.

关键词： Imidazo[4,5-c]quinoline Suzuki reaction Dual PI3K/mTOR inhibitor

Improving Both Electron and Hole Mobilities of an Ambipolar Polymer by Integrating Sodium Sulfonate-Tethered Alkyl Side Chains

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Chinese Journal of Chemistry 2020年第12期38卷 1663-1670页

作者： Li-Na Liu Yun-Peng Li Maria Khalil Zi-Wen Xu Guanghui Xie xingmin zhang Jingjing Li Wei-Shi Li Key Laborstory of Synthetic and Self-assembly Chemistry for Orgonic Functional Molecules Center for Excellence in Molecular Synthesisshanghailnsti-tute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Acodemy of sciences345 Lingling RoodSshanghai 200032China Engineering Research Center of henghou for High Performance Organic Functional Moterials Zhengzhou Institute of Technology6 Yingcai treetHuiji DistrictZhengzhouHenan 450044China Shanghai ynchrotron Radiation Facility Shanghai Advanced Research insituteChinese Acodemy of Sciences239 Zhangheng RoadPudong DistricShanghai 201204China

of main observation and conclusion High performance ambipolar organic semiconductors are highly desirable for organic logic ***,we demonstrate the integration of sodium sulfonate(SS)-tethered sidechains into a diketopyrrolopyrrole-based ambipolar polymer(PDPP3T)can simultaneously improve its hole and electron transport performances either parallel or perpendicular to polymer *** SS-functionalized polymers(PDPP3T-XSS,x=0.025,0.05 and 0.10)were synthesized and *** was found that SS functionalization can reinforce interchain n-Ti interactions,slightly lower frontier orbital energy levels,produce more rod-like structures in film,and change chain-packing from edge-on to face-on fashion,but has little influence on thermal *** interestingly,organic field-effect transistors reported hole mobility of 0.27±0.066 cm^2.V^-1·s^-1 and electron mobility of 0.038±0.016 cm^2.V^-1·s^-1 for PDPP3T,while increased 2.4 and 5 folds to 0.64±0.087 and 0.19±0.051 cm^2.V^-1·s^-1 for PDPP3T-0.025SS,***,PDPP3T-xSS devices displayed reduced threshold voltages for both hole and electron ***,space charge-limited current method found SS functionalization achieved an order of magnitude increase in electron mobility and slight enhancement in hole mobility transporting perpendicular to polymer ***-depth investigations suggest such enhancements may originate from the joint actions of chain-stacking modulation and ionic doping effect.

关键词： properties. effect. film.

Textured Asymmetric Membrane Electrode Assemblies of Piezoelectric Phosphorene and Ti_(3)C_(2)T_(x)MXene Heterostructures for Enhanced Electrochemical Stability and Kinetics in LIBs

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Nano-Micro Letters 2024年第4期16卷 394-414页

作者： Yihui Li Juan Xie Ruofei Wang Shugang Min Zewen Xu Yangjian Ding Pengcheng Su xingmin zhang Liyu Wei Jing‑Feng Li Zhaoqiang Chu Jingyu Sun Cheng Huang Volta and DiPole Materials Labs College of EnergySoochow Institute for Energy and Materials InnovationS(SIEMIS)Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceKey Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical IndustrySoochow UniversitySuzhou 215006People’s Republic of China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013People’s Republic of China College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001People’s Republic of China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204People’s Republic of China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084People’s Republic of China High Density Materials Technology Center for Flexible Hybrid Electronics Suzhou Institute of Electronic Functional Materials TechnologySuzhou Industrial Technology Research InstituteSuzhou 215151People’s Republic of China Institute of Advanced Materials and Institute of Membrane Science and Technology Jiangsu National Synergistic Innovation Center for Advanced MaterialsSuzhou Laboratory and Nanjing Tech UniversityNanjing 211816People’s Republic of China

Black phosphorus with a superior theoretical capacity(2596 mAh g^(-1))and high conductivity is regarded as one of the powerful candidates for lithium-ion battery(LIB)anode materials,whereas the severe volume expansion and sluggish kinetics still impede its applications in *** contrast,the exfoliated two-dimensional phosphorene owns negligible volume variation,and its intrinsic piezoelectricity is considered to be beneficial to the Li-ion transfer kinetics,while its positive influence has not been discussed ***,a phosphorene/MXene heterostructure-textured nanopiezocomposite is proposed with even phosphorene distribution and enhanced piezo-electrochemical coupling as an applicable free-standing asymmetric membrane electrode beyond the skin effect for enhanced Li-ion *** experimental and simulation analysis reveals that the embedded phosphorene nanosheets not only provide abundant active sites for Li-ions,but also endow the nanocomposite with favorable piezoelectricity,thus promoting the Li-ion transfer kinetics by generating the piezoelectric field serving as an extra *** waltzing with the MXene framework,the optimized electrode exhibits enhanced kinetics and stability,achieving stable cycling performances for 1,000 cycles at 2 A g^(-1),and delivering a high reversible capacity of 524 m Ah g^(-1)at-20℃,indicating the positive influence of the structural merits of self-assembled nanopiezocomposites on promoting stability and kinetics.

关键词： Phosphorene Nanopiezocomposite Piezo-electrochemical coupling Membrane electrode assembly Lithium-ion storage

Non‐Negligible Influences of Rain on 5G Millimeter Wave Terrestrial Communication System

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ZTE Communications 2020年第3期18卷 64-70页

作者： GONG Shuhong zhang xingmin DOU Jianwu HUANG Weifang School of Physics and Optoelectronic Engineering Xidian UniversityXi’an 710071China Algorithm Department ZTE CorporationShanghai 200240China

The impacts of rain on millimeter wave(mmW)terrestrial links,which are inevitably affected by ground-objects-induced multipath propagation,are presented based on the signal time series data measured at 35 *** analyze the coupled influence mechanism of rain-induced and ground-objects-induced multipath propagation on mmW terrestrial *** can be deduced that the rain-induced impacts on millimeter wave terrestrial links cannot be *** results given in this paper are significant for developing 5G millimeter wave terrestrial mobile communication links.

关键词： 5G communication mmW multipath rain-caused effects terrestrial links

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动态尾部金融网络结构与传染性度量

管理工程学报 2021年第2期35卷 143-154页

作者：张兴敏傅强张帅朱浩重庆大学经济与工商管理学院重庆400044 重庆邮电大学经济管理学院重庆400065

基于Lasso高维分位数回归模型,本文构建了中国金融系统的尾部网络结构,并定义了总体网络以及行业间、行业内和金融机构间等多层金融网络的尾部风险传染度,解构其传染机制与关联特征,评估各机构双向系统重要性(接收端和发射端)。同时,本... 详细信息

基于Lasso高维分位数回归模型,本文构建了中国金融系统的尾部网络结构,并定义了总体网络以及行业间、行业内和金融机构间等多层金融网络的尾部风险传染度,解构其传染机制与关联特征,评估各机构双向系统重要性(接收端和发射端)。同时,本文提出了一个最优滚动窗宽选择标准方法,以优化滚动样本技术下的动态网络结构。结果表明,所有层级尾部风险传染效应(总体系统、行业间、行业内和机构间)在经济金融极端困境时期,呈现明显增强及剧烈震荡特征,2015年中国股灾期间尤甚。跨行业传染效应日益严峻,银行与保险间表现出较强关联性,房地产机构与其他金融机构间均表现出较高传染性,跨业监管值得关注。接收与发射最多尾部风险传染的金融机构仍然是银行与证券类机构。系统中超过50%的金融机构倾向于接收风险传染,一旦出现系统性冲击,整个金融系统的稳定性将遭受重创,因此,应加强此类机构应对外界冲击的能力。此外,基于新滚动窗宽选择标准法的动态模型的估计性能明显优于传统方法。研究结论有助于理解中国金融系统的网络结构和传染机制,对宏观审慎监管体系的建立提供了依据。

关键词：网络分析高维时变模型最优滚动窗宽跨市场传染系统性金融风险

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推力偏心齿轮联轴节润滑与密封

润滑与密封 2000年第2期25卷 54-55页

作者：王世杰夏延秋张新敏沈阳工业大学 110023

推力偏心齿轮联轴节是为潜油螺杆泵专门设计的，由于对其有特殊的工况要求，润滑与密封的方法就非同于常规。经过长期反复的试验，本文从联轴节的结构设计、关键零件材料选择、润滑介质的确定和补充等几个方面对此进行详细讨论并提出有... 详细信息

推力偏心齿轮联轴节是为潜油螺杆泵专门设计的，由于对其有特殊的工况要求，润滑与密封的方法就非同于常规。经过长期反复的试验，本文从联轴节的结构设计、关键零件材料选择、润滑介质的确定和补充等几个方面对此进行详细讨论并提出有效措施。

关键词：联轴节螺杆泵润滑密封推力偏心齿轮联轴节

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综合性国际体育赛会的碳减排效应

中国人口·资源与环境 2022年第11期32卷 171-183页

作者：伍骏骞张星民西南财经大学中国西部经济研究院四川成都611130

作为奥林匹克事业发展的三大核心支柱,“可持续”已经成为衡量综合性国际体育赛会筹办成功与否的重要标志。研究综合性国际体育赛会的环境绩效具有较强的现实意义。文章使用2002—2019年中国地级及以上城市的年度面板数据,利用中国主办... 详细信息

作为奥林匹克事业发展的三大核心支柱,“可持续”已经成为衡量综合性国际体育赛会筹办成功与否的重要标志。研究综合性国际体育赛会的环境绩效具有较强的现实意义。文章使用2002—2019年中国地级及以上城市的年度面板数据,利用中国主办的历次综合性国际体育赛会构建准自然实验,结合双重差分模型(DID)、空间双重差分模型(SDID)和合成控制法(SCM)等方法系统考察了综合性国际体育赛会对举办城市碳排放绩效的影响、作用机制、空间溢出效应以及可能存在的异质性。结果显示:①举办综合性国际体育赛会显著提高了举办城市的碳排放绩效,使其碳排放强度下降约15.30%。②机制分析表明,举办综合性国际体育赛会可以通过提高主办城市的绿色发展水平与科技创新能力实现主办城市的低碳转型。但由综合性国际体育赛会所引致的产业结构高级化与外商直接投资并未对主办城市的碳排放绩效产生显著影响。③从时间维度上看,综合性国际体育赛会的减排效应具有动态性特征,其效力在赛后4期内较为显著。④从空间维度上看,综合性国际体育赛会的减排效应存在显著的空间溢出。综合性国际体育赛会带动了主办城市的邻近城市碳排放强度下降约2.50%,导致全域其他城市的碳排放强度下降约1.84%。⑤异质性分析表明,综合性国际体育赛会的减排效应与赛事规模和影响力等因素相关,奥运会、亚运会和大运会等影响力较大的赛会更能改善主办城市的碳排放绩效,而亚冬会、冬大会等规模相对较小的赛会对主办城市的碳排放绩效影响有限。基于上述结论,文章认为,应该以举办综合性国际体育赛会为契机,切实推动举办城市公共治理能力现代化,着力解决城市发展过程中存在的现实问题,实现“绿色办会”与可持续发展“双赢”。

关键词：综合性国际体育赛会碳排放绩效空间溢出效应双重差分模型

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空间绳系拖拽系统摆动特性与平稳控制

北京航空航天大学学报 2016年第4期42卷 694-702页

作者：赵国伟张兴民唐斌孙亮北京航空航天大学宇航学院北京100083

考虑了任务星与废星的姿态运动以及系统组合体的面内外姿态运动,建立了绳系拖拽离轨系统动力学与控制模型,以切向常值推力下绳系拖拽轨道转移为任务过程,分析了任务星在喷气和零动量轮的限制姿态反馈控制条件下飞行时,废星姿态摆动、系... 详细信息

考虑了任务星与废星的姿态运动以及系统组合体的面内外姿态运动,建立了绳系拖拽离轨系统动力学与控制模型,以切向常值推力下绳系拖拽轨道转移为任务过程,分析了任务星在喷气和零动量轮的限制姿态反馈控制条件下飞行时,废星姿态摆动、系统组合体面内外摆动和任务星姿态运动的规律及相互影响关系。采用留位和阻尼控制相结合的系绳张力复合控制方法,并结合任务星姿态控制,确保绳系拖拽转移安全平稳进行。仿真结果表明:常值推力下绳系拖拽轨道转移时,牵挂点偏置诱发的废星姿态周期性摆动会激发绳系组合体的面内外同频率高阶摆动,星体姿态运动是任务星姿态扰动力矩产生的主要因素;采用张力复合控制可有效消除废星姿态摆动并保持星间相对距离,结合任务星姿态控制,可实现离轨过程的平稳与安全,大幅减少任务星的姿控能耗。

关键词：绳系系统轨道转移摆动特性动力学张力控制

金融系统的网络结构及尾部风险度量——基于动态半参数分位数回归模型

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管理评论 2021年第4期33卷 59-70页

作者：张兴敏傅强张帅季俊伟西南财经大学金融学院成都611130 重庆大学经济与工商管理学院重庆400044 成都理工大学商学院成都610059

运用动态半参数分位数回归模型构建金融网络结构,厘清金融机构间的极端风险传染效应,并将市场情绪指标作为条件变量引入网络模型中。研究发现,金融机构的系统性风险贡献和暴露以及尾部风险传染度的统计特征(如排名)存在显著差异。金融... 详细信息

运用动态半参数分位数回归模型构建金融网络结构,厘清金融机构间的极端风险传染效应,并将市场情绪指标作为条件变量引入网络模型中。研究发现,金融机构的系统性风险贡献和暴露以及尾部风险传染度的统计特征(如排名)存在显著差异。金融机构的网络传染度排名,尾部风险接收源排名和尾部风险发射源排名存在显著差异。在经济金融动荡时期,三大金融行业(银行业、证券业和保险业)的内部网络传染效应均显著增强,且证券业内的传染效应明显高于银行业内的传染效应。基于滚动窗宽选择标准的金融网络模型优化了金融机构间的风险传染关系的时变性识别过程。对高传染性的金融机构实施监管已成为一个至关重要的政策问题,因此探究极端风险的网络关联性有助于提升对金融系统的监督和监管效率,本文的研究框架为此提供了相应依据。

关键词：系统性风险 CoVaR 半参数回归网络传染关系市场情绪