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M5B3 Boride at the Grain Boundary of a Nickel-based Superalloy

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Journal of Materials Science & Technology 2016年第3期32卷 265-270页

作者： Beining Du Zhiwu Shi Jinxia Yang Zhaokuang chu chuanyong Cui xiaofeng Sun Liyuan Sheng Yufeng Zheng Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Peking University Beijing 100871 China PKU-HKUST Shen Zhen-Hong Kong Institution Shenzhen 518057 China

The grain boundary microstructures of a heat-treated Ni-based cast superalloy IN792 were investigated. The results show that M5B3 boride precipitates at the grain boundary. A special orientation relationship between M5B3 phase and the matrix at one side of the grain boundary is found. At the same time, two M5B3 borides with different orientations could co-exist in a single M5B3 particle as an intergrowth besides existing alone, thus forming orientation relationship between the two M5B3 phases and matrix. This phenomenon could be attributed to the special orientation relationship between M5B3 phase and the matrix.

关键词： Nickel superalloy Grain boundaries Boride Crystal structure lntergrowth Orientation relationship

钙结合蛋白S100B对骨性关节炎模型兔软骨损伤修复中炎性递质表达影响

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青岛大学学报（医学版） 2019年第2期55卷 141-145,150页

作者：王金锋李春胜毕前航楚晓丰张海宁青岛大学附属医院关节外科山东青岛266003 威海卫人民医院骨科枣庄新远大腰腿痛专科医院骨科

目的探讨钙结合蛋白S100B对骨性关节炎(OA)模型兔软骨损伤修复中炎性递质表达的影响及其机制。方法应用膝关节制动法制备兔OA模型。采用酶联免疫吸附试验(ELISA)方法分别检测兔关节液中白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α... 详细信息

目的探讨钙结合蛋白S100B对骨性关节炎(OA)模型兔软骨损伤修复中炎性递质表达的影响及其机制。方法应用膝关节制动法制备兔OA模型。采用酶联免疫吸附试验(ELISA)方法分别检测兔关节液中白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)水平,用Real-time PCR(RT-PCR)方法及Western blot法检测兔软骨组织中S100B、成纤维细胞生长因子(FGF2)及成纤维细胞生长因子受体1(FGFR1)的表达。利用小干扰RNA(siRNA)技术,构建S100B的siRNA干扰载体和过表达载体以及FGFR1的siRNA干扰载体,用慢病毒转染方法,将S100B的siRNA干扰载体和过表达载体以及FGFR1的siRNA干扰载体转入人滑膜成纤维细胞内。采用ELISA方法检测各组滑膜成纤维细胞中IL-1β和TNF-α水平,用RT-PCR和Western blot法检测FGF2和FGFR1的表达。结果与对照组比较,模型组兔关节液中IL-1β、TNF-α水平显著增加(t=4.042、6.408,P0.05)。FGFR1拮抗实验显示,LPS+vehicle control组、LPS+S100B过表达组细胞IL-1β、TNF-α水平较空白对照组升高,且LPS+S100B过表达组高于LPS+vehicle control组,差异均有统计学意义(F=30.548、20.244,P0.05)。LPS+S100B过表达+FGFR1siRNA组细胞FGF2表达较空白对照组显著升高(F=11.002、13.147,P0.05)。结论钙结合蛋白S100B能够调节滑膜成纤维细胞炎症反应并可能影响OA软骨损伤修复,其机制可能与激活FGF2/FGFR1信号通路有关。

关键词：钙结合蛋白质类骨关节炎软骨,关节成纤维细胞生长因子受体,成纤维细胞生长因子兔

A new method for evaluating the drought tolerance of upland rice cultivars

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The Crop Journal 2017年第6期5卷 488-498页

作者： xiaofeng Zu Yanke Lu Qianqian Wang Peifeng chu Wei Miao Huaqi Wang Honggui La College of Agronomy and Biotechnology China Agricultural University College of Life Sciences Nanjing Agricultural University

Worldwide, approximately 27 million ha of rice are grown in upland rather than paddy fields, and is subject to drought stress. To counter this stress, it is desirable to breed new rice cultivars with improved drought tolerance. For breeding purposes, especially for breeding upland rice, it is desirable to develop a simple and accurate method to evaluate rice drought tolerance. We describe a new method that can be used to evaluate efficiently the drought tolerance degree(DTD) of upland rice cultivars, and call it the DTD *** is defined as the mean of the ratios of green leaf length to total leaf length of the top three leaves in every rice seedling after drought treatment, and thus takes values from zero to one. To test whether the DTD method works effectively to evaluate drought tolerance of upland rice cultivars, we determined the DTD values of 13 upland rice cultivars showing varying degrees of drought tolerance in drought-tolerance trials. The idrl-1 mutant, which displayed the strongest drought tolerance of the 13 cultivars as identified by drought-tolerance trials under severe drought stress, had the highest DTD value and297-28, displaying the weakest drought tolerance, had the lowest DTD value. Further analyses of water potential, survival rate, panicles per plant, spikelets per panicle, seed setting rate, yield per plant, and contents of proline, chlorophyll, and malondialdehyde(MDA) indicated that DTD values are in general correlated with the values of these traits,making this new method useful for assessing the drought tolerance of upland rice *** results show that the DTD method is a simple, direct and relatively accurate evaluation method for drought-tolerance breeding of upland rice.

关键词： Upland rice Breeding Drought tolerance degree (DTD) New evaluation method

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失业难治性强迫症患者的心理特征研究

中华脑科疾病与康复杂志（电子版） 2017年第1期7卷 1-4页

作者：周朝昀王万章张晓斌许晓峰储昕沙维伟扬州五台山医院临床心理科江苏扬州225003

目的对有无工作难治性强迫症患者的心理特征进行测查，并探讨患者职业困难与心理因素的关系。方法选取2009年5月至2015年10月在我院强迫症专病门诊就诊的98名难治性强迫症患者为研究对象。将患者分为职业组和失业组，其中有职业组56人... 详细信息

目的对有无工作难治性强迫症患者的心理特征进行测查，并探讨患者职业困难与心理因素的关系。方法选取2009年5月至2015年10月在我院强迫症专病门诊就诊的98名难治性强迫症患者为研究对象。将患者分为职业组和失业组，其中有职业组56人，失业组42人。给予父母教养方式问卷（EMBU）、防御方式问卷（DSQ）进行测评，并将两组测查结果进行比较。全部数据采用SPSS12．0统计学软件进行处理。结果在父母教养方式问卷中，职业组父母情感温暖因子分高于失业组，二组比较差异有统计学意义（P〈0．05）。在防御方式问卷中，职业组难治性强迫症患者在回避低于失业组，具有统计学意义（p〈0．05）。结论失业会使难治性强迫症患者面临着更多的压力，对患者的康复产生不利的影响；但是患者一些心理特征也会对患者的职业产生危害。

关键词：难治性强迫症父母教养心理防御机制失业

组织场域视角下党组织引领社区治理共同体建设的实践逻辑--以苏南永联村为例

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南京农业大学学报（社会科学版） 2023年第1期23卷 125-134页

作者：褚庆宜赵晓峰西北农林科技大学人文社会发展学院杨凌712100

基层社会治理共同体建设是应对社会结构转型的重要治理制度创新。分析党组织领导基层社会治理共同体建设的内在逻辑,是深刻把握新时代中国特色社会主义社会治理的基点。本文从永联村社区治理共同体的构建历程出发,以组织场域的结构化再... 详细信息

基层社会治理共同体建设是应对社会结构转型的重要治理制度创新。分析党组织领导基层社会治理共同体建设的内在逻辑,是深刻把握新时代中国特色社会主义社会治理的基点。本文从永联村社区治理共同体的构建历程出发,以组织场域的结构化再生产为分析视角,凝练出党组织引领社区治理共同体的作用机制,即政治引领机制、组织驱动机制和制度嵌入机制。此三大机制为社区治理共同体的建设打造了组织认同基础、组织运行动力基础以及组织制度基础。同时,拥有政治权威、经济资源支持的党组织主导了多元主体互动组织场域的结构化过程,并以其自身的政治化逻辑统合多元主体的行动逻辑,使得各主体能够在共同目标的引导下形成对新制度规范的“文化—认知”,进而推动了基层社会治理制度的演化与发展。

关键词：社区治理共同体党组织引领组织场域基层社会治理制度

Spatiotemporal variation and driving factors of water yield services on the Qingzang Plateau

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Geography and Sustainability 2021年第1期2卷 31-39页

作者： xiaofeng Wang Bingyang chu Xiaoming Feng Yuehao Li Bojie Fu Shirong Liu Jiming Jin College of Land Engineering Chang’an UniversityXi’an 710054China Shaanxi Provincial Key Laboratory of Land Engineering Xi’an 710054China National key laboratory of urban and regional ecology Chinese academy of sciencesBeijing 100085China Institute of land surface system science and sustainable development Beijing normal universityBeijing 100875China Key Laboratory of Forest Ecology and Environment China’s National Forestry and Grassland AdministrationInstitute of Forest EcologyEnvironment and ProtectionChinese Academy of ForestryNo.2 DongxiaofuHaidian DistrictBeijing 100091China Department of Watershed Sciences Utah State UniversityLoganUT 84322USA

Water resources are a basic need for social sustainable development and human *** an important national strategy for water resources security,spatial and temporal patterns and driving mechanisms of water yield ecosystem services on the Qingzang Plateau(QP)are critical for water resources management,optimal water allocation and the improvement of ecological water protection ***,only a few relevant studies are currently *** this study,we simulated the water yield(WY)of the QP over 34 years,from 1982 to 2015,using the InVEST model and analyzed the spatiotemporal dynamic relationships between WY and climate change as well as between WY and vegetation change,using geographically weighted regression(GWR)*** results showed that:1)from 1982 to 2015,the WY of the QP increased at an average rate of 3.8 mm/yr;2)WY presented a reduced spatial pattern from southeast to northwest;and 3)the WY driving factors have individual and spatial *** terms of the area percentage in promoting WY when analyzing each driving factor,precipitation(99.8%)and air pressure(53.3%)played the major roles in promoting WY,while temperature(71.9%),wind speed(57.2%),net primary productivity(87.2%),radiation(68.3%)and lake(87.7%)played negative *** areas where WY are dominated by temperature are the largest(41.1%),and followed by areas dominated by pressure(19.7%)and precipitation(18.5%).The results of this study provide scientific support for formulating regional water resources policy,social and economic development planning and other macro decisions for the QP.

关键词： Qingzang Plateau Water yield GWR models

Reinventing the mechanism of high-performance Bi anode in aqueous K^+ rechargeable batteries

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Journal of Energy Chemistry 2020年第9期29卷 21-28,I0002页

作者： Tingting Qin Xuefeng chu Ting Deng Boran Wang Xiaoyu Zhang Taowen Dong Zhengming Li xiaofeng Fan Xin Ge Zizhun Wang Peng Wang Wei Zhang Weitao Zheng State Key Laboratory of Automotive Simulation and Control and School of Materials Science&Engineeringand Electron Microscopy Centerand International Center of Future ScienceJilin UniversityChangchun 130012JilinChina Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074HubeiChina Key Laboratory of Architectural Cold Climate Energy Management Ministry of EducationJilin Jianzhu UniversityChangchun 130118JilinChina State Key Laboratory of Inorganic Synthesis&Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012JilinChina Basque Foundation for Science IKERBASQUEBilbao 48013Spain

Increasing attention has been paid to rechargeable aqueous batteries due to their high safety and low ***,they remain in their infancy because of the limited choice of available anode materials with high specific capacity and satisfying cycling *** metal with layered structure can act as an ideal anode material with high capacity;however,the energy storage mechanism has not well ***,we demonstrate that Bi metal enables affording ultra-high specific capacity(254.3 mAh g^-1),superior rate capability and a capacity retention of 88.8%after 1600 *** from the previously-reported redox reaction mechanisms of Bi electrode,efficient(de)alloying of K+is responsible for its excellent *** excellent aqueous Bi battery is fabricated by matching Bi anode with Co(OH)2 cathode in KOH(1 M)*** outstanding performance is quite adequate and competitive for electrochemical energy storage devices.

关键词： Aqueous rechargeable batteries Bi anode K^+ Alloying Mechanism

Pt_(1)/Ni_(6)Co_(1)layered double hydroxides/N-doped graphene for electrochemical non-enzymatic glucose sensing by synergistic enhancement of single atoms and doping

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Nano Research 2023年第1期16卷 318-324页

作者： Baojun Long Peiyu Cao Yuanmeng Zhao Qianqian Fu Yan Mo Yueming Zhai Juejing Liu Xingyi Lyu Tao Li xiaofeng Guo Changsheng Shan Minghua Zeng Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical EngineeringHubei UniversityWuhan 430062China Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin 541004China The Institute for Advanced Studies(IAS) Wuhan UniversityWuhan 430072China Material Science and Engineering Program Washington State UniversityPullmanWA 99164USA Department of Chemistry and Alexandra Navrotsky Institute for Experimental Thermodynamics Washington State UniversityPullmanWA 99164USA X-ray Science Division Argonne National LaboratoryArgonneIL 60439USA Department of Chemistry and Biochemistry Northern Illinois UniversityDeKalbIL 60115USA

The development of novel single-atom catalysts is important for highly efficient electrochemical catalysis and *** this work,a novel Pt single atoms(SAs)supported on Ni_(6)Co_(1)layered double hydroxides/nitrogen-doped graphene(Pt_(1)/Ni_(6)Co_(1)LDHs/NG)was constructed for electrochemical enzyme-free catalysis and sensing towards *** loading of Pt single atoms increases with doping of Co atoms that generate more anchoring sites for Pt *** resulting Pt_(1)/Ni_(6)Co_(1)LDHs/NG exhibits low oxidative potential of 0.440 V with high sensitivity of 273.78μA·mM^(−1)·cm^(−2)toward glucose,which are 85 mV lower and 15 times higher than those of Ni(OH)_(2),***_(1)/Ni_(6)Co_(1)LDHs/NG also shows excellent selectivity and great stability during 5-week *** and experimental results show that the boosted performance of Pt_(1)/Ni_(6)Co_(1)LDHs/NG originates from its stronger binding energy with glucose and the synergistic effect of Pt SAs,Co doping,and *** work provides a general strategy of designing highly active SACs for extending their application in electrochemical sensing.

关键词： single-atom catalysts electrochemical sensor layered double hydroxides nitrogen-doped graphene synergistic effect

Preparation, microstructure and degradation performance of biomedical magnesium alloy fine wires

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Progress in Natural Science:Materials International 2014年第5期24卷 523-530页

作者： Jing Bai Lingling Yin Ye Lu Yiwei Gan Feng Xue Chenglin chu Jingli Yan Kai Yan xiaofeng Wan Zhejun Tang School of Materials Science and Engineering Southeast University Jiangsu Key Laboratory for Advanced Metallic Materials College of Mechanical Engineering Yangzhou University School of Mechanical Engineering Nantong University Mechanical and Electrical College Nanjing University of Aeronautics and Astronautics

With the development of new biodegradable Mg alloy implant devices, the potential applications of biomedical Mg alloy fine wires are realized and explored gradually. In this study, we prepared three kinds of Mg alloy fine wires containing 4 wt% RE(Gd/Y/Nd) and 0.4 wt% Zn with the diameter less than 0.4 μm through casting, hot extruding and multi-pass cold drawing combined with intermediated annealing process. Their microstructures, mechanical and degradation properties were investigated. In comparison with the corresponding as-extruded alloy, the final fine wire has significantly refined grain with an average size of 3–4 μm, and meanwhile shows higher yield strength but lower ductility at room temperature. The degradation tests results and surface morphologies observations indicate that Mg–4Gd–0.4Zn and Mg–4Nd–0.4Zn fine wires have similar good corrosion resistance and the uniform corrosion behavior in SBF solution. By contrast, Mg–4Y–0.4Zn fine wire shows a poor corrosion resistance and the pitting corrosion behavior.

关键词： Biomedical magnesium alloy Wires Cold drawing Microstructure Degradation