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Dealloyed TiCuMn efficiently catalyze the NO reduction and Zn-NO batteries

Frontiers of Chemical Science and Engineering 2024年第9期18卷 51-59页

作者： Lang Zhang Tong hou weijia Liu Yeyu Wu Tianran wei Junyang Ding Qian Liu Jun Luo Xijun Liu State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures MOE Key Laboratory of New Processing Technology for Nonferrous Metals and MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China Education Department of Guangxi Zhuang Autonomous Region Key Laboratory of Applied Analytical ChemistryGuangxi Collaborative Innovation Center for Chemistry and Engineering of Forest ProductsGuangxi Key Laboratory of Chemistry and Engineering of Forest ProductsKey Laboratory of Chemistry and Engineering of Forest ProductsState Ethnic Affairs CommissionSchool of Chemistry and Chemical EngineeringGuangxi Minzu UniversityNanning 530006China Institute for New Energy Materials&Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Institute for Advanced Study Chengdu UniversityChengdu 610106China ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaShenzhen 518110China

Electrocatalytic NO reduction reaction offers a sustainable route to achieving environmental protection and NH3 production targets as *** this work,a class of dealloyed Ti_(60)Cu_(33)Mn_(7)ribbons with enough nanoparticles for the high-efficient NO reduction reaction to NH_(3)is fabricated,reaching an excellent Faradaic efficiency of 93.2%at–0.5 V vs reversible hydrogen electrode and a high NH3 synthesis rate of 717.4μmol·h^(-1)·mgcat.-1 at–0.6 V vs reversible hydrogen *** formed nanoparticles on the surface of the catalyst could facilitate the exposure of active sites and the transportation of various reactive ions and ***,the Mn content in the TiCuMn ribbons modulates the chemical and physical properties of its surface,such as modifying the electronic structure of the Cu species,optimizing the adsorption energy of N^(*)atoms,decreasing the strength of the NO adsorption,and eliminating the thermodynamic energy barrier,thus improving the NO reduction reaction catalytic ***,a Zn-NO battery was fabricated using the catalyst and Zn plates,generating an NH3 yield of 129.1µmol·h^(-1)·cm^(-2)while offering a peak power density of 1.45 mW·cm^(-2).

关键词： nitric oxide reduction NH3 electrosynthesis TiCuMn alloy Mn modulation Zn-NO battery

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Chemerin and apelin are positively correlated with inflammation in obese type 2 diabetic patients

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Chinese Medical Journal 2012年第19期125卷 3440-3444页

作者： YU Shan ZHANG Ying LI Mei-zhen XU Hua WANG Qian SONG Jun LIN Peng ZHANG Li LIU Qian HUANG Qing-xian WANG Kun hou wei-kai Department of Endocrinology Qilu Hospital of Shandong University Jinan Shandong 250012 China Department of Endocrinology Rongjun Hospital Jinan Shandong 250013 China Department of Endocrinology Dongying People's Hospital Dongying Shandong 257091 China Department of Internal Medicine Jinan Fifth Hospital Jinan Shandong 250022 China Department of Shandong Medical Imaging Research Institute Jinan Shandong 250001 China Department of Internal Medicine Shandong Jiaotong Hospital Jinan Shandong 250031 China

Background As two novel adipocytokines, chemerin and apelin play a key role in the pathological process of insulin resistance （IR）, glucose metabolism and obesity, researchers have found that the levels of chemerin and apelin changed significantly in type 2 diabetic patients with obesity, however, the underlying mechanism involved remains unclear. The aim of this study was to investigate whether chemerin and apelin play an important role in the pathophysiologic proceeding of diabetes. Methods This study enrolled 81 newly diagnosed obese type 2 diabetes mellitus （T2DM） patients （T2DM group, n=81）. All the patients were randomly assigned to DM1 group treated with metformin （n=41） and DM2 group treated with pioglitazone （n=40）. After hypoglycemic agents treatment, patients under better blood glucose control were chosen to be given antioxidant treatment. Another 79 subjects without T2DM were recruited as normal control group （NC group）, including 40 subjects （NC1 group） with normal body mass index （BMI） and 39 obese subjects （NC2 group）. Levels of chemerin, apelin, BMI, tumor necrosis factor-α（TNF-α）, homeostasis model assessment of IR （HOMA-IR） and 8-isoprotaglandim F2α（8-iso-PGF2α） were examined at baseline and post-treatment. The relationship between chemerin, apelin and BMI, TNF-α, HOMA-IR, 8-iso-PGF2α was analyzed. Results The baseline levels of chemerin, apelin, TNF-α, HOMA-IR and 8-iso-PGF2α in T2DM group were significantly higher than normal control group （P 〈0.001）. All indices mentioned above were significantly decreased after treatment （P 〈0.05）. In T2DM patients treated with pioglitazone, indices mentioned above except for HOMA-IR, were decreased significantly compared with patients treated with mefformin （P〈0.05）. After antioxidant treatment using lipoic acid, levels of chemerin, apelin, TNF-α and 8-iso-PGF2α were further significantly decreased （P 〈0.05）. Correlation analysis showed that the levels of chemerin and apelin correlated positively with BMI, TNF

关键词： type 2 diabetes mellitus obesity insulin resistance chemerin apelin

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Tunable near-infrared light emission from layered TiS_(3) nanoribbons

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Frontiers of physics 2024年第4期19卷 103-111页

作者： Junrong Zhang Cheng Chen Yanming Wang Yang Lu Honghong Li Xingang hou Yaning Liang Long Fang Du Xiang kai Zhang Junyong Wang School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China CAS Key Laboratory of Nanophotonic Materials and Devices&Key Laboratory of Nanodevices and Applications i-LabSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123China Frontier Institute of Chip and System Fudan UniversityShanghai 200438China School of Materials Science and Engineering Shanghai UniversityShanghai 200444China College of Energy&Power Engineering Inner Mongolia University of TechnologyHohhot 010051China

The low-dimensional light source shows promise in photonic integrated *** layered van der Waals material that exhibits luminescence in the near-infrared optical communication waveband is an essential component in on-chip light ***,the tunable near-infrared photoluminescence(PL)of the air-stable layered titanium trisulfide(TiS3)is *** with iodine particles as a transport agent,TiS3 grown by chemical vapor transport using sulfur powder as a transport agent has fewer sulfur vacancies,which increases the luminescence intensity by an order of *** PL emission wavelength can be regulated in the near-infrared regime by thickness *** addition,we observed an interesting anisotropic strain response of PL in layered TiS3 nanoribbon:a blue shift of PL was achieved when the uniaxial tensile strain was applied along the b-axis,while a negligible shift was observed when the strain was applied along the *** work reveals the tunable nearinfrared luminescent properties of TiS3 nanoribbons,suggesting their potential applications as near-infrared light sources in photonic integrated circuits.

关键词： titanium trisulfide near-infrared luminescence S-vacancy tunability strain engineering

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粮食供需关系变化新形势下转变农业生产方式研究

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河北学刊 2018年第1期38卷 103-110页

作者：魏后凯韩磊胡冰川中国社会科学院农村发展研究所

中国粮食供需面临总量宽松与结构性矛盾突出共存的新形势,所以加快转变农业生产方式既是缓解粮食供需矛盾的内在需要,也是促进农业可持续发展的重要途径。当前,中国农业生产方式转变正处在环境宽松、转型有利的关键时期。新型农业生产... 详细信息

中国粮食供需面临总量宽松与结构性矛盾突出共存的新形势,所以加快转变农业生产方式既是缓解粮食供需矛盾的内在需要,也是促进农业可持续发展的重要途径。当前,中国农业生产方式转变正处在环境宽松、转型有利的关键时期。新型农业生产方式追求农业绿色生产和可持续发展,注重满足质的需求,是以规模化、集约化、绿色化、工业化和社会化为基本特征的现代农业生产方式。在粮食供需关系变化新形势下,加快农业生产方式转变需要促进农业政策转型,加快农业科技创新,引导小农生产进入现代农业发展体系并建立现代农业发展示范体系。

关键词：粮食供需形势变化结构性矛盾生产方式转变

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中国农业农村发展研究的历史演变与理论创新

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改革 2020年第10期 5-18页

作者：魏后凯苑鹏芦千文中国社会科学院农村发展研究所

走中国特色农业农村发展道路,需要立足中国基本国情,深刻把握历史脉络和国家重大战略需求,全面加强和深化农业农村发展理论研究。新中国成立以来,农业农村发展研究经历了曲折的历程,根据体制背景和研究重点的变化,大体可分为建立对传统... 详细信息

走中国特色农业农村发展道路,需要立足中国基本国情,深刻把握历史脉络和国家重大战略需求,全面加强和深化农业农村发展理论研究。新中国成立以来,农业农村发展研究经历了曲折的历程,根据体制背景和研究重点的变化,大体可分为建立对传统小农的社会主义改造理论(1949—1957年)、探索计划经济体制下的农业经济理论(1958—1977年)、建立和发展中国特色社会主义市场经济农业农村发展理论(1978—2001年)、构建城乡融合的农业农村发展理论(2002年至今)四个阶段,目前已经初步建立起中国特色社会主义农业农村发展理论体系。新中国成立以来的农业农村发展研究为丰富和发展马克思主义政治经济学、加快构建中国特色哲学社会科学作出了原创性的重要贡献,为促进中国农业农村的现代化建设、推进中国农村改革发展提供了重要理论支撑。展望未来,应立足国家重大战略和改革发展需要,回应时代呼唤,加快建设与发展中国特色社会主义农业农村发展理论体系,为走中国特色农业农村发展道路提供坚实的理论支撑。

关键词：农业农村现代化农业农村发展研究理论创新

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对外开放、贸易商品结构与中国城乡收入差距——基于省际面板数据的实证分析

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中国软科学 2011年第6期 47-56页

作者：袁冬梅魏后凯杨焕湖南师范大学商学院湖南长沙410081 中国社会科学院城市发展与环境研究所北京100732

本文描述了1995年以来我国各地区贸易开放度、贸易商品结构与城乡收入差距的变化趋势,依据新经济地理理论及扩展的H-O理论提出了贸易商品结构变化影响城乡收入差距的相关假说,并进行了实证检验。研究结果表明:(1)从全国范围以及分地区来... 详细信息

本文描述了1995年以来我国各地区贸易开放度、贸易商品结构与城乡收入差距的变化趋势,依据新经济地理理论及扩展的H-O理论提出了贸易商品结构变化影响城乡收入差距的相关假说,并进行了实证检验。研究结果表明:(1)从全国范围以及分地区来看,贸易开放度的扩大和制成品贸易比重的上升均有利于城乡收入差距的缩小;(2)外资的流入促进了制造业的发展和制成品贸易比重的上升,各省份外资依存度的提高对城乡收入差距具有缓和作用,但统计上不显著;(3)当前劳动力的不充分流动、各省份海外市场接近度的差异等仍是制造业空间布局扩散和城乡收入差距缩小的不利因素。因此,在进一步扩大对外开放的基础上,促进劳动力、资本等要素跨区域充分流动,优化各地区的产业结构和贸易商品结构,对缩小城乡收入差距具有积极作用。

关键词：对外贸易贸易商品结构劳动力流动城乡收入差距

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中国地区经济差距与产业布局的空间关联性——基于Moran指数的解释

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中国软科学 2012年第12期 90-102页

作者：袁冬梅魏后凯于斌湖南师范大学商学院湖南长沙410081 中国社会科学院城市发展与环境研究所北京100732

本文在对地区差距进行产业分解的基础上,运用空间统计的Moran指数分析方法,分析了1997-2008年间我国31省区市制造业和服务业空间集聚的结构特征与变化趋势。研究发现,东部与中西部制造业和服务业空间集聚呈现出明显的两极化发展趋势,且... 详细信息

本文在对地区差距进行产业分解的基础上,运用空间统计的Moran指数分析方法,分析了1997-2008年间我国31省区市制造业和服务业空间集聚的结构特征与变化趋势。研究发现,东部与中西部制造业和服务业空间集聚呈现出明显的两极化发展趋势,且在极化区域内通过集聚的路径依赖与累积循环机制,影响地区差距的演变。尽管以上海为中心形成的强强集聚区产生了正向增长极效应,但这不足以短期内完全打破两极化发展的分化现象。与以往研究不同的是,本文考虑到了制造业和服务业融合发展的事实与趋势,发现服务业对地区差距的贡献日益强化并可能成长为主导因素。因此,从长远发展看,要缩小地区差距,应加快东部地区产业转型升级,强化三大增长极的辐射效应;同时,应充分发挥中西部地区优势,优化投资环境,培育强势产业,积极加强与东部地区的产业分工合作,培育形成一批新的增长极。

关键词：地区经济差距 Moran指数集聚效应辐射效应

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Interaction between catechol-O-methyltransferase Val/Met polymorphism and cognitive reserve for negative symptoms in schizophrenia

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World Journal of Psychiatry 2024年第5期14卷 695-703页

作者： Wen-Peng hou Xiang-Qin Qin wei-wei hou Yun-Yi Han Qi-Jing Bo Fang Dong Fu-Chun Zhou Xian-Bin Li Chuan-Yue Wang Beijing Key Laboratory of Mental Disorders National Clinical Research Center for Mental Disorders&National Center for Mental DisordersBeijing Anding HospitalCapital Medical UniversityBeijing 100088China Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijing 100069China

BACKGROUND Cognitive reserve(CR)and the catechol-O-methyltransferase(COMT)Val/Met polymorphism are reportedly linked to negative symptoms in ***,the regulatory effect of the COMT genotype on the relationship between CR and negative symptoms is still *** To investigate whether the relationship between CR and negative symptoms could be regulated by the COMT Val/Met *** In a cross-sectional study,54 clinically stable patients with schizophrenia underwent assessments for the COMT genotype,CR,and negative *** was estimated using scores in the information and similarities subtests of a short form of the Chinese version of the Wechsler Adult Intelligence *** COMT Met-carriers exhibited fewer negative symptoms than Val *** the total sample,significant negative correlations were found between negative symptoms and information,*** between information,similarities and negative symptoms were observed in Val homozygotes only,with information and similarities showing interaction effects with the COMT genotype in relation to negative symptoms(information,β=-0.282,95%CI:-0.552 to-0.011,P=0.042;similarities,β=-0.250,95%CI:-0.495 to-0.004,P=0.046).CONCLUSION This study provides initial evidence that the association between negative symptoms and CR is under the regulation of the COMT genotype in schizophrenia.

关键词： Catechol-O-methyltransferase Val/Met polymorphism Cognitive reserve Crystallized intelligence Negative symptoms Schizophrenia

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Dynamic failure process of expanded polystyrene particle lightweight soil under cyclic loading using discrete element method

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Earthquake Engineering and Engineering Vibration 2024年第4期23卷 815-828页

作者： Zhou wei hou Tianshun Chen Ye Wang Qi Luo Yasheng Zhang Yafei College of Water Resources and Architectural Engineering Northwest A&F UniversityXianyang 712100China Xi’an Key Laboratory of Geotechnical and Underground Engineering Xi’an University of Science and TechnologyXi’an 710054China Hanjiang to weihe River Valley Water Diversion Project Construction Co. Ltd.Xi’an 710011China

Expanded polystyrene(EPS)particle-based lightweight soil,which is a type of lightweight filler,is mainly used in road *** stability of subgrades under dynamic loading is attracting increased research *** traditional method for studying the dynamic strength characteristics of soils is dynamic triaxial testing,and the discrete element simulation of lightweight soils under cyclic load has rarely been *** study the meso-mechanisms of the dynamic failure processes of EPS particle lightweight soils,a discrete element numerical model is established using the particle flow code(PFC)*** contact force,displacement field,and velocity field of lightweight soil under different cumulative compressive strains are *** results show that the hysteresis curves of lightweight soil present characteristics of strain accumulation,which reflect the cyclic effects of the dynamic *** the confining pressure increases,the contact force of the particles also *** confining pressure can restrain the motion of the particle system and increase the dynamic strength of the *** the confining pressure is held constant,an increase in compressive strain causes minimal change in the contact force between soil ***,the contact force between the EPS particles decreases,and their displacement direction points vertically toward the center of the *** an increase in compressive strain,the velocity direction of the particle system changes from a random distribution and points vertically toward the center of the *** the compressive strain is 5%,the number of particles deflected in the particle velocity direction increases significantly,and the cumulative rate of deformation in the lightweight soil ***,it is feasible to use 5%compressive strain as the dynamic strength standard for lightweight *** element methods provide a new approach toward the dynamic performance evaluation of lightw

关键词： lightweight soil cyclic loading dynamic triaxial test discrete element method hysteresis curve

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入世后政府职能转变与西部大开发中的法制建设

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甘肃省经济管理干部学院学报 2002年第4期15卷 3-7页

作者：魏后凯中国社会科学院西部发展研究中心，北京市100836

WTO规则作为国际公法,是政府之间的协议.我国已加入WTO,各级政府行为和政策法规必须符合WTO规则,不符合的必须作出相应调整,政府职能和政府行为也必须进行转变,并进行科学的规范.实施西部大开发是一项长期、艰巨、伟大的战略任务,要使... 详细信息

WTO规则作为国际公法,是政府之间的协议.我国已加入WTO,各级政府行为和政策法规必须符合WTO规则,不符合的必须作出相应调整,政府职能和政府行为也必须进行转变,并进行科学的规范.实施西部大开发是一项长期、艰巨、伟大的战略任务,要使其有计划、分阶段地稳步推进,就必须有一个稳定的法律制度保障,为此,进一步加强西部大开发中的法制建设就显得更为紧迫更为重要.

关键词： WTO规则地方政府职能西部大开发法制建设

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