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上肢截肢者大脑运动皮质区神经可塑性的研究进展

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中国康复理论与实践 2019年第7期25卷 801-804页

作者：郝莹郭峰沈阳体育学院研究生部辽宁沈阳市110102 沈阳体育学院运动人体科学学院辽宁沈阳市110102

上肢截肢后发生的神经传导阻滞、本体感觉缺失和幻肢痛都可能引起大脑神经可塑性变化,镜像神经元系统也对学习能力有重要影响.但相关研究甚少,上肢截肢者残肢或假肢的运动控制与学习的中枢机制还需进一步研究.

关键词：上肢截肢大脑运动皮质区神经可塑性综述

CaCl_2作为造孔剂制备泡沫青铜的结构和力学性能

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稀有金属材料与工程 2018年第1期47卷 279-285页

作者：谢波周芸郭坤山钟浩左孝青昆明理工大学云南昆明650093

以青铜粉为原料、CaCl_2为造孔剂,采用粉末烧结溶解法制备开孔泡沫青铜。通过改变造孔剂体积分数和粒径成功制备出孔隙率为70%~90%,孔径1~3mm的泡沫青铜试样。研究了孔隙率和造孔剂的关系以及孔隙率、孔径对泡沫试样力学性能的影响,并... 详细信息

以青铜粉为原料、CaCl_2为造孔剂,采用粉末烧结溶解法制备开孔泡沫青铜。通过改变造孔剂体积分数和粒径成功制备出孔隙率为70%~90%,孔径1~3mm的泡沫青铜试样。研究了孔隙率和造孔剂的关系以及孔隙率、孔径对泡沫试样力学性能的影响,并对其孔结构,相组成和微观形貌进行观察和分析。结果表明:泡沫青铜试样的塑性屈服平台应力随孔隙率增加而减小,当孔隙率为77%~89%时,对应塑性屈服平台应力为12.6~2.6MPa。当应变量为50%时,孔隙率为77%~89%的泡沫青铜单位体积能量吸收值(W)范围为6.21~0.91MJ/m^3。试样的理想吸能效率(I)都接近0.82,说明泡沫青铜可以作为一种理想的吸能材料。

关键词：泡沫青铜 CaCl2 粉末冶金力学性能

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中国狂犬病病毒基因分型及分布研究进展

中华实验和临床病毒学杂志 2024年第4期38卷 474-480页

作者：王娟冯云云南省地方病防治所、云南省自然疫源性疾病防控技术重点实验室大理671000

Lyssavirus广泛存在于全球各地,种类较多。作为其中一员,狂犬病病毒造成的危害最为严重,其致病性极强。近年来,中国狂犬病的防治工作取得一定成效,然而,由于地域广阔、人口众多且分布密集,狂犬病的防控仍然面临一定的困难。为了制定有... 详细信息

Lyssavirus广泛存在于全球各地,种类较多。作为其中一员,狂犬病病毒造成的危害最为严重,其致病性极强。近年来,中国狂犬病的防治工作取得一定成效,然而,由于地域广阔、人口众多且分布密集,狂犬病的防控仍然面临一定的困难。为了制定有针对性的防控措施,推进中国狂犬病研究,了解该病的分子流行病学特征至关重要。本文综述了世界及我国最新的Lyssavirus分类研究,探讨我国狂犬病病毒在犬和野生动物间的种群类型、传播宿主以及流行情况。

关键词：狂犬病狂犬病病毒 Lyssavirus 分子流行病学

Improvement of Nickel-Stanogermanide Contact Properties by Platinum Interlayer

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Chinese Physics Letters 2018年第5期35卷 95-98页

作者： Wei-Jun Wan Wei Ren Xiao-Ran Meng yun-Xia Ping Xing Wei Zhong-Ying Xue Wen-Jie Yu Miao Zhang Zeng-feng Di Bo Zhang Physics Department Materials Genome Instituteand International Centre for Quantum and Molecular Structures Shanghai UniversityShanghai 200444 State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050 School of Mathematics Physics and StatisticsShanghai University of Engineering ScienceShanghai 201600

We report an effective method to improve the formation of nickel stanogermanide（Ni Ge Sn） by the incorporation of a platinum（Pt） interlayer. After the Ni/Pt/Ge Sn samples are annealed we obtain uniform Ni Ge Sn thin films,which are characterized by means of sheet resistance, atomic force microscopy, scanning electron microscopy,cross-section transmission electron microscopy, and energy dispersive x-ray spectroscopy. These results show that the presence of Pt increases the smoothness and uniform morphology of Ni Ge Sn films.

关键词： In Pt Sn Improvement of Nickel-Stanogermanide Contact Properties by Platinum Interlayer

Graphdiyne as a saturable absorber for 2-µm all-solid-state Q-switched laser

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Science China Materials 2021年第3期64卷 683-690页

作者： Yuqian Zu Jia Guo Qianqian hao feng Zhang Cong Wang Jie Liu Bing Wang Shandong Provincial Engineering and Technical Center of Light Manipulations and Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan250014China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan250358China Institute of Data Science and Technology Shandong Normal UniversityJinan250014China Institute of Microscale Optoelectronics Collaborative Innovation Center for Optoelectronic Science&TechnologyKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro-Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen518060China

As a novel one-atom-thick carbon allotrope,graphdiyne(GDY)has attracted wide interest in two-dimensional materials owing to its unique feature with a planar layer comprising sp2-and sp-hybridized carbon atoms and a direct natural bandgap.A high-quality saturable absorber(SA)based on GDY was successfully fabricated,and the nonlinear saturable absorption properties were investigated.A compact diode-pumped solid-state passively Q-switched laser based on the as-prepared GDY-SA could be operated at 2µ*** Q-switched laser delivered a maximum average output power of 1.29 W at a central wavelength of 1908.41 nm with up to 54.8%slope efficiency.A repetition rate of 91.58 kHz and single pulse energy of 23.08µJ were *** work is the first application of GDY as an SA to generate all-solid-state pulsed *** results indicate that GDY is a promising SA for solid-state pulsed lasers and has further application potential for ultrafast photonic devices in the 2-µm region.

关键词： graphdiyne saturable absorber all-solid-state laser passively Q-switched two-dimensional materials

Porous carbon matrix-encapsulated MnO in situ derived from metalorganic frameworks as advanced anode materials for Li-ion capacitors

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Science China Materials 2022年第1期65卷 59-68页

作者： Sipeng Jiang Shilin yun Haijie Cao Zhiqiang Zhang Hongbin feng Haichao Chen Institute of Materials for Energy and Environment School of Materials Science and EngineeringQingdao UniversityQingdao 266071China

Conversion-type anode materials hold great potential for Li+storage applications owing to their high specific capacity,while large volume expansion and poor electrical conductivity limit their rate and cycling ***,a bimetal ZnMn-based metal-organic framework(ZnMn-MOF)is engineered for in situ conversion of MnO-encapsulated porous carbon(MnO/PC)*** templating and activation effects of coordinated Zn endow the converted PC matrix with a highly porous *** enhances the compatibility of PC matrix with MnO particles,resulting in the full encapsulation of MnO particles in the PC *** significantly,the PC matrix provides enough void space to buffer the volume change,which fully wraps the MnO without crack or fracture during repeated *** a result,MnO/PC shows high charge storage capability,extraordinary rate performance,and long-term cycling stability at the same *** MnO/PC exhibits high delithiation capacities of 768mA h g^(-1)at 0.1Ag^(-1)and 487mA h g^(-1)at a high rate of 0.7Ag^(-1),combined with an unattenuated cycling performance after 500 cycles at 0.3Ag^(-1).More significantly,MnO/PC demonstrates a well-matched performance with the capacitive activated carbon electrode in a Li-ion capacitor(LIC)full *** demonstrates a high specific energy of 153.6W h kg^(-1)at 210W kg^(-1),combined with a specific energy of 71.8W h kg^(-1)at a high specific power of 63.0kW kg^(-1).

关键词： Li-ion capacitors MnO/porous carbon composites metal-organic frameworks derivant conversion-type anode materials

Design of the Control System for Thermal Treatment via Fuzzy Logic PID

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Chinese Journal of Biomedical Engineering(English Edition) 2017年第1期26卷 24-30页

作者： SONG Ming-yang CAI Zhang-hao BAI Jing-feng SUN Jian-qi School of Biomedical Engineering and Med-X Research Institute Shanghai Jiao Tong UniversityShanghai 200031China

In this paper, a cryosurgery-hyperthermia system is proposed for taking advantage of the alternated cooling and heating treatment in tumor. A novel control system is proposed to ensure that the thermal system works effectively. Firstly,the tissue temperature around the probe is regulated and kept in a desired range when radio frequency ablation is operated. Secondly, precise control of temperature is achieved in hyperthermia treatment using fuzzy logic PID type controller. The results of ex vivo liver experiment demonstrate that this system could provide a rather good performance with the proposed control method.

关键词： fuzzy logic PID cryosurgery-hyperthermia system protecting probe from overheat

秸秆粉碎氨化还田对土壤体积质量及持水特性的影响

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农业工程学报 2011年第11期27卷 211-215页

作者：王增丽王珍冯浩西北农林科技大学中国旱区节水农业研究院杨凌712100 中国科学院水利部水土保持研究所杨凌712100

为尝试解决秸秆还田中秸秆分解缓慢、易诱发病虫害及与作物争氮等问题,通过室内土柱培养试验对比研究了秸秆粉碎程度及秸秆不同C/N值对自身分解速率、土壤体积质量、土壤持水特性的影响。结果表明:短期内秸秆粉碎程度对秸秆分解速率影... 详细信息

为尝试解决秸秆还田中秸秆分解缓慢、易诱发病虫害及与作物争氮等问题,通过室内土柱培养试验对比研究了秸秆粉碎程度及秸秆不同C/N值对自身分解速率、土壤体积质量、土壤持水特性的影响。结果表明:短期内秸秆粉碎程度对秸秆分解速率影响不大,但粉碎秸秆在试验后期分解速率明显高于长秸秆,氨化措施可显著加快秸秆的分解速率;粉碎秸秆对土壤体积质量的减小作用明显较长秸秆为好,在整个试验期,粉碎氨化秸秆处理的土壤体积质量均显著低于同时期其他处理;各处理土壤持水能力差异不大,但粉碎氨化秸秆能明显增强土壤耐旱性。该结果为探索一种能最大效益发挥秸秆改良土壤作用的秸秆还田新方式提供了一定的参照。

关键词：秸秆分解土壤水分氨化土壤体积质量持水特性

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促进中国总需求结构优化的政策体系研究

经济问题探索 2010年第12期 1-4页

作者：梁媛冯昊电子科技大学成都610000 国金证券投资银行部成都610000

改革开放以来,我国国民经济总量得到快速增长,总需求结构也呈现出明显的趋势特征。本文以国内外宏观数据为依据,指出我国总需求存在的结构性问题。同时,从永久性收入、分配机制、居民支出结构、金融市场发展以及消费品供给失衡等方面深... 详细信息

改革开放以来,我国国民经济总量得到快速增长,总需求结构也呈现出明显的趋势特征。本文以国内外宏观数据为依据,指出我国总需求存在的结构性问题。同时,从永久性收入、分配机制、居民支出结构、金融市场发展以及消费品供给失衡等方面深入探讨我国总需求结构的成因,并以此为依据,为优化我国总需求结构提出政策建议。

关键词：总需求结构居民消费财税政策