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Neuroscience Bulletin 2013年第6期29卷 701-707页

作者： xin-Yi chen Yan Xue hua Wang Su-Hong Zhu Xiao-Meng Hao Lei chen Clinical Medicine 2009 Shandong University Medical School Department of Physiology Qingdao University Department of Physiology Binzhou Medical College

The globus pallidus in rodents,equivalent to the external segment of the globus pallidus in primates,plays an important role in movement *** studies have shown abundant γ-aminobutyric acid（GABA）ergic innervation and GABAA receptors in the globus *** this study,we investigated the effects of endogenous GABAA receptors on the spontaneous firing activity of pallidal neurons in both normal and MPTP-treated mice using multi-barrel electrodes extracellular recordings in *** found that in normal mice,pressure ejection of 0.1 mmol/L gabazine,a specific GABA A receptor antagonist,increased the spontaneous firing rate of globus pallidus neurons by 27.6 ± 5.6%.Furthermore,in MPTP mice（14 days after MPTP treatment）,0.1 mmol/L gabazine increased the firing rates by 51.0 ± 7.9%,significantly greater than in normal *** results suggest that endogenous GABAA receptors modulate the activity of globus pallidus *** present findings may provide a rationale for investigations into the potential role of GABAA receptors in Parkinson’s disease.

关键词： globus pallidus GABA A receptor Parkinson’s disease single unit recording

Effects of process parameters on surface quality,composition segregation,microstructure and properties of QSn6.5-0.1 alloy slabs fabricated by HCCM horizontal continuous casting

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Journal of Iron and Steel Research International 2017年第3期24卷 273-281页

作者： Yang Liu xin-hua Liu hua-dong Fu Min-xuan Lou Jian-xin Xie Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing 100083 China

Columnar-grained QSn6. 5-0. 1 alloy slabs with a width of 70 mm and thickness of 10 mm were fabricated by heating-cooling combined mold（ HCCM） horizontal continuous casting. The effects of process parameters on solidification microstructure,surface quality,composition segregation and mechanical properties were studied. The results showed that the slabs with good surface quality,excellent mechanical properties and no obvious segregation could be prepared at the melt casting temperature of 1 250 ℃,the heating-mold temperature of 1 150- 1 200℃,the cooling water flow rate of 600 L / h and the casting speed of 20- 80 mm / min. The slabs had the yield strength of 124- 155 MPa,the elongation rate of 46. 6%- 56. 3% and the surface roughness of 0. 22- 0. 55μm,which enabled them to be directly processed without subsequent milling surface. The ratio of Sn content in the surface to that in the core was 0. 83- 1. 10,with an average value close to 1. 0,and not obviously influenced by process parameters. When the casting speed increased from 20 to 80 mm / min,the grain size changed little if the other process parameters were the same. When the heating-mold temperature increased from 1 150 to 1 200℃,the grain size was obviously refined and became more uniform if the casting speed was the same. Within the range of the casting speed at which the columnar grain structure could be obtained,the columnar grain size was mainly influenced by the heating-mold temperature.

关键词： QSn6.5 copper alloy Heating-cooling combined mold Horizontal continuous casting Microstructure Mechanical property Composition segregation

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中国文学史编纂中的“唱对台戏”

三峡大学学报(人文社会科学版) 2025年第1期47卷 1-6+116+125页

作者：陈文新武汉大学文学院

中国文学史编纂中的“唱对台戏”,包括多种类型，或发生在晚辈与前辈之间，如五四新文化人之于清民之际的文学史家；或发生在同辈学人之间，如五四时期的学衡派之于新文化人；或发生在域外汉学与本土学术之间，如《哥伦比亚中国文学史... 详细信息

中国文学史编纂中的“唱对台戏”,包括多种类型，或发生在晚辈与前辈之间，如五四新文化人之于清民之际的文学史家；或发生在同辈学人之间，如五四时期的学衡派之于新文化人；或发生在域外汉学与本土学术之间，如《哥伦比亚中国文学史》之于通行的中国文学史。“唱对台戏”促进了对中国文学发展历程的深入理解，是中国文学史编纂逐渐趋于完善的必由之路。对其间的种种情形加以考察，有助于深入把握“先入之见”与“客观性”的辩证关系。

关键词：中国文学史编纂 “唱对台戏”

Effect of tungsten carbide particles on microstructure and mechanical properties of Cu alloy composite bit matrix

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Journal of Iron and Steel Research International 2024年第2期31卷 519-530页

作者： Ding-qian Dong Feng-yuan He xin-hui chen Hui Li Kai-hua Shi Hui-wen Xiong xin Xiang Li Zhang College of Mechanical Engineering Sichuan University of Science and EngineeringZigong643000SichuanChina State Key Laboratory of Powder Metallurgy Central South UniversityChangsha410083HunanChina Zigong Cemented Carbide Co. Ltd.Zigong643011SichuanChina Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science and EngineeringZigong643000SichuanChina

Copper alloy composite bit matrix was prepared by pressureless vacuum infiltration,using at least one of the three kinds of tungsten carbide particles,for example,irregular cast tungsten carbide,monocrystalline tungsten carbide and sintered reduced tungsten carbide *** effects of powder particle morphology,particle size and mass fraction of tungsten carbide on the microstructure and mechanical properties of copper alloy composite were investigated by means of scanning electron microscopy,X-ray diffraction and abrasive wear test in *** results show that tungsten carbide morphology and particle size have obvious effects on the mechanical properties of copper alloy *** tungsten carbide partially dissolved in the copper alloy binding phase,and layers of Cu_(0.3)W_(0.5)Ni_(0.1)Mn_(0.1)C phase with a thickness of around 8–15μm were formed on the edge of the cast tungsten *** 45%irregular crushed fine cast tungsten carbide and 15%monocrystalline cast tungsten carbide were used as the skeleton,satisfactory comprehensive performance of the reinforced copper alloy composite bit matrix was obtained,with the bending strength,impact toughness and hardness reaching 1048 MPa,4.95 J/cm^(2) and 43.6 HRC,*** main wear mechanism was that the tungsten carbide particles firstly protruded from the friction surface after the copper alloy matrix was worn,and then peeled off from the matrix when further wear occurred.

关键词： Polycrystalline diamond compact Pressureless vacuum infiltration Copper alloy composite bit matrix Microstructure characterization Abrasive wear behavior

Variation of soil organic carbon and bulk density during afforestation regulates soil hydraulic properties

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Journal of Mountain Science 2022年第8期19卷 2322-2332页

作者： GU Feng chen Xue-jiao SU Zheng-an ZHANG xin-bao ZHOU Ming-hua Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China Sichuan Academy of Environmental Policy and Planning Chengdu 610093China School of Food and Bioengineering Xihua UniversityChengdu 610039China

Grain to Green program on arable land has been conducted for decades in semi-arid regions of North ***,it remains uncertain how afforestation practices affect soil hydraulic properties(SHP).Two afforestation types,***(SL)and woodland(WL),and the adjacent cropland(CL)were investigated to determine afforestation effects on SHP in this *** and undisturbed soil cores were collected in three experimental *** field capacity(FC),wilting point(WP),and available water capacity(AWC)increased in SL compared to the *** saturated water content,however,decreased significantly in both SL and *** and redundancy analysis identified that bulk density(BD)and soil organic carbon(SOC)were the main factors regulating SHP across different land *** saturated water contents in afforestation sites were likely driven by the higher BD,compared to the adjacent ***,WP,and AWC were positively correlated to SOC *** afforestation may not increase the saturated water content of a landscape,our results indicate that it can improve soil water retention and could be an effective practice for soil and water conservation.

关键词： Afforestation Bulk density Field capacity Soil hydraulic properties Soil organic carbon Soil water retention curve

Simple yet extraordinary: Super-polyhedra-built 3D chalcogenide framework of Cs_(5)Ga_(9)S_(16) with excellent infrared nonlinear optical performance

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Chinese Chemical Letters 2023年第7期34卷 400-403页

作者： Hong chen Mao-Yin Ran Sheng-hua Zhou xin-Tao Wu hua Lin Qi-Long Zhu State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences(CAS)Fuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China University of Chinese Academy of Sciences Bejing 100049China

Non-centrosymmetric chalcogenides are attracting considerable attention as highly promising infrared nonlinear optical (IR-NLO) candidates,but it is challenging to simultaneously achieve sufficient secondharmonic-generation coefficient (d_(eff)>0.5×AgGaS_(2)) and large energy gap (E_g>3.5 e V).In this work,a novel ternary chalcogenide,Cs_(5)Ga_(9)S_(16) with an ultra-wide E_gof 4.05 e V,has been successfully *** sulfide belongs to the monoclinic space group Pn (No.7) with a novel 3D anionic[Ga_(9)S_(16)]^(5–)framework that is formed by super-polyhedral[Ga_(9)S_(23)]units through corner-sharing S *** a unique crystal structure displays desirable characteristics which indicate a promising IR-NLO candidate:favourable phase-matching feature,sufficient d_(eff)(0.7×AgGaS_(2)),ultrahigh laser-induced damage threshold (31.6×AgGaS_(2)) and broad transparent region (0.27-14.96μm).In addition,systematic theoretical studies and structural analysis suggest that the desirable IR-NLO performances can be attributed to the super-polyhedral building *** finding may provide useful insight into the understanding and designing other high-performance IR-NLO candidates with super-polyhedral-built structures.

关键词： Chalcogenide IR nonlinear optic Super-polyhedra-built framework Wide energy gap Structure-activity relationship

The future of carbon neutrality from a scientific research perspective:an interview with Jing-Hai Li

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National Science Review 2023年第9期10卷 110-112页

作者： Li-hua chen Wuhan University of Technology

Since China announced that it will strive to achieve carbon peak by 2030 and carbon neutrality by 2060, it has become the focus of the whole *** implementation of carbon peaking and carbon neutrality goals requires a range of revolutionary technologies and involves an array of key scientific questions.A great deal of research has focused on the development of new concepts and innovative technologies on carbon science and sustainable development.

关键词： Carbon

An Effective Approach for the Preparation of High Performance Thermal Conductive Polymer Composites Containing Liquid Metal

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Chinese Journal of Polymer Science 2024年第7期42卷 992-1001,I0010页

作者： xin chen Xue-Zhong Zhang Yi-Fei Yuan Chuan-Liang chen Lian-Hu Xiong Qiang Fu hua Deng College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China Department of Materials Science and Engineering Sichuan University-Pittsburgh InstituteSichuan UniversityChengdu610065China

The preparation of high-performance thermal conductive composites containing liquid metals(LM)has attracted significant ***,the stable dispersion of LM within polymer solution and effective property contribution of liquid metals remains significant challenges that need to be *** by the properties of the dendritic structure of the tree root system in grasping the soil,“shear-induced precipitation-interfacial reset-reprotonation”processing strategy is proposed to prepare nanocomposites based on aramid micron fibers(AMFs)with hierarchical dendritic *** to the combination of van der Waals force provided by hierarchical dendritic structure,electrostatic interaction between AMFs and LM,coordinative bonding of―NH to LM,together with interfacial re-setting and multi-step protonation,several features can be achieved through such strategy:conducive to the local filler network construction,improvement of interfacial interaction,improvement of the stability of filler dispersion in the solvent,and enhancement of mechanical and thermal properties of the *** resulting AMFsp H=4/LM films demonstrate a thermal conductivity of 10.98 W·m^(-1)·K^(-1)at 70%filler content,improvement of 126.8%compared to ANFs/LM film;while maintaining a strength of~85.88 MPa,improvement of 77%compared to AMFs/LM *** also possess insulation properties,enable heat dissipation for high power *** work provides an effective strategy for the preparation of high performance polymer composites containing liquid metal.

关键词： Shear-induced Reprotonation AMFs LM Filler dispersion

Goal-Oriented Control Systems(GOCS):From HOW to WHAT

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IEEE/CAA Journal of Automatica Sinica 2024年第4期11卷 816-819页

作者： Wen-hua chen the Department of Aeronautical and Automotive Engineering Loughborough UniversityLeicestershireLE113TUU.K.

Brief:New control theory is required to underpin safe design and deployment of future highly automated systems to deal with uncertain environments and complicated tasks,enabled by AI and other advanced ***-Oriented Control Systems offer potential to transform the control system design from currently instructing a control system how to perform a task to specifying what is to be achieved.

关键词： automated instru system

Electrochemical anodic oxidation assisted fabrication of memristors

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International Journal of Extreme Manufacturing 2024年第3期6卷 250-272页

作者： Shuai-Bin hua Tian Jin xin Guo School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China

Owing to the advantages of simple structure,low power consumption and high-density integration,memristors or memristive devices are attracting increasing attention in the fields such as next generation non-volatile memories,neuromorphic computation and data ***,the deposition of memristive films often requires expensive equipment,strict vacuum conditions,high energy consumption,and extended processing *** contrast,electrochemical anodizing can produce metal oxide films quickly(e.g.10 s) under ambient *** means of the anodizing technique,oxide films,oxide nanotubes,nanowires and nanodots can be fabricated to prepare *** film thickness,nanostructures,defect concentrations,etc,can be varied to regulate device performances by adjusting oxidation parameters such as voltage,current and *** memristors fabricated by the anodic oxidation technique can achieve high device consistency,low variation,and ultrahigh yield *** article provides a comprehensive review of the research progress in the field of anodic oxidation assisted fabrication of ***,the principle of anodic oxidation is introduced;then,different types of memristors produced by anodic oxidation and their applications are presented;finally,features and challenges of anodic oxidation for memristor production are elaborated.

关键词： anodic oxidation anodized aluminium oxide memristor resistive switching electrical properties