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Quantum Phase of a Moving Dipole and Berry’s Phase

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Chinese Physics Letters 1995年第6期12卷 327-329页

作者： liu quanhui HUANG Xiangyou QIAN Shangwu Department of Applied Physics Hu’nan UniversityChangsha 410082 Center of Theoretical PhysicsCCAST(World Laboratory)Beijing 100080 Department of Physics Peking UniversityBeijing 100871

The quantum phase of a moving dipole as it encircles an infinite line of magnetic charge,recently discovered by Wilkens(***.72(1994)5),is derived as a special case of Berry’s phase.

关键词： phase. Berry infinite

Electrochemical CO2 reduction over nitrogen-doped SnO2 crystal surfaces

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Journal of Energy Chemistry 2019年第6期28卷 22-30页

作者： Yuefeng Zhang Jianjun liu Zengxi Wei quanhui liu Caiyun Wang Jianmin Ma School of Physics and Electronics Hunan UniversityChangsha 410082HunanChina ARC Centre of Excellence for Electromaterials Science. Intelligent Polymer Research Institute AIIM FacilityUniversity of WollongongNorth WollongongNSW 2500Australia

Crystal planes of a catalyst play crucial role in determining the electrocatalytic performance for CO2 *** catalyst SnO2 can convert CO2 molecules into valuable formic acid(HCOOH).Incorporating heteroatom N into SnO2 further improves its catalytic *** understand the mechanism and realize a highly efficient CO2-to-HCOOH conversion,we used density functional theory(DFT)to calculate the free energy of CO2 reduction reactions(CO2RR)on different crystal planes of N-doped SnO2(N-SnO2).The results indicate that N-SnO2 lowered the activation energy of intermediates leading to a better catalytic performance than pure *** also discovered that the N-Sn O2 (211)plane possesses the most suitable free energy during the reduction process,exhibiting the best catalytic ability for the CO2-to-HCOOH *** intermediate of CO2RR on N-SnO2 is HCOO*or COOH* instead of OCHO*.These results may provide useful insights into the mechanism of CO2RR,and promote the development of heteroatomdoped catalyst for efficient CO2RR.

关键词： CO2 reduction reaction SnO2 Crystal surface Electrocatalysis First principles

DOUBLE WAVE DESCRIPTION OF SINGLE PARTICLE IN AN INFINITELY DEEP SQUARE POTENTIAL WELL

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Chinese Physics Letters 1990年第4期7卷 152-155页

作者： HUANG Xiangyou QIAN Shangwu liu quanhui HE Zuoxiu Center of Theoretical Physics CCAST(Wor1d hb.)Beijing 100080 Department of Physics Peking UniversityBeijing 100871 Department of Physics Zhengzhou UniversityZhengzhou 450052 Institute of Theoretical Physics Academia SinicaBeijing100080

Recently we have suggested that the state of a single particle should be jointly defined by two wave *** this letter we use this suggestion to discuss the motion of a single particle in an infinitely deep square potential well;the results obiained in the classical limit correctly describe the motion of the single particle with clarity.

关键词： functions infinitely particle

Josephson effect in the strontium titanate/lanthanum aluminate junction

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Chinese Physics B 2019年第9期28卷 327-331页

作者： Xing Yang Jie Chen Yabin Yu quanhui liu School of Physics and Electronics Hunan University

We report theoretical studies on the newly discovered novel Josephson effect and scanning tunneling spectroscopy(STS) at the interface of strontium titanate/lanthanum aluminate(STO/LAO).With a phenomenological boson-fermion model, the density of states is calculated and the results are consistent with the STS experiments.A typical calculation of Josephson effect is performed, and it is in qualitative agreement with the *** calculations indicate that the gap states come from the pairing of quasi-particles with a finite total momentum and the Josephson current comes from the tunneling of quasi-particle pairs with zero *** quasi-particles are Bogoliubov ***, the fits using Kulik's formula imply that the Josephson junction at the STO/LAO interface has a point contact with the clean superconductor limit.

关键词： strontium titanate/lanthanum aluminate Josephson effect scanning tunneling spectroscopy pseudogap

Clinical practices s of Traditional Chinese Medicine for acute upper respiratory tract infection in children

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Journal of Traditional Chinese Medicine 2018年第4期38卷 504-510页

作者： Rong Ping Li Li Zhang Xilian liu quanhui Yan Huimin Xin Deli Xue Zheng Ren Xianqing Wu Zhenqi Ma Rong Zhang Junhua Department of Pediatrics First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Traditional Chinese Medicine Prevention and Treatment of Infectious Disease Research Office Institute of Basic Research in Clinical MedicineChina Academy of Chinese Medical Sciences Department of Traditional Chinese Medicine Beijing Children's HospitalCapital Medical University Department of Pediatrics Beijing Friendship HospitalCapital Medical University Department of Pediatrics Shanghai Municipal Hospital of Traditional Chinese Medicine Department of Pediatrics The First Affiliated Hospital of Henan University of Traditional Chinese Medicine Department of Pediatrics The First Clinical CollegeLiaoning Hospital of Traditional Chinese Medicine Department of Internal Medicine Tianjin University of Traditional Chinese Medicine

OBJECTIVE:To develop Clinical practice s of Traditional Chinese Medicine(TCM) for acute upper respiratory tract infection(AURI) in children;TCM is usedalone or administered together with ***:Under the guidance of evidence-based medicine concept,in strict accordance with the rules of international s development,as well as on the basis of evidence of clinical research of TCM,the s solicited opinions from clinical experts and methodologists in TCM and Western *** standard was applied to form experts' ***:The s standardized classification of TCM patterns and TCM treatments in children with AURI,including prescription,Chinese patent medicine,non-drug treatment and ***:Follows the principle of "evidence based,consensus supplemented,and experience referred",these s were formulated,but the quality of evidence of included studies were relatively *** refinement of the s should be needed as deeper clinical studies as available in future.

关键词： Traditional Chinese Medicine Children Upper respiratory tract infection Clinical practice s

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多层耦合网络传播综述

复杂系统与复杂性科学 2016年第1期13卷 48-57页

作者：刘权辉王伟唐明电子科技大学互联网科学中心成都611731

简要介绍多层耦合网络上传播动力学方面的阶段性研究进展以及存在的一些问题,主要关注的内容:多层耦合网络上的生物传播、社会传播、生物-社会耦合传播及多层耦合网络面临的一些挑战性问题。这些阶段性的研究成果从多层耦合网络的新角... 详细信息

简要介绍多层耦合网络上传播动力学方面的阶段性研究进展以及存在的一些问题,主要关注的内容:多层耦合网络上的生物传播、社会传播、生物-社会耦合传播及多层耦合网络面临的一些挑战性问题。这些阶段性的研究成果从多层耦合网络的新角度加深了我们对真实传播过程及其机制的理解。能更好地控制疾病传播和减少它对人类的危害,深入探讨相关问题将有助于明确下进一步研究的方向。

关键词：网络科学多层耦合网络传播动力学

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求解矩形件排样问题的十进制狼群算法

计算机集成制造系统 2019年第5期25卷 1169-1179页

作者：罗强饶运清刘泉辉李世红华中科技大学机械科学与工程学院湖北武汉430074 华中科技大学电子与电气工程学院湖北武汉430074 贵州交通职业技术学院汽车工程系贵州贵阳550008

为了使矩形件排样问题在可接受的时间内获得精确解,以在一定时间内获得高利用率的排样布局方案为研究目标,提出一种适合求解矩形件排样问题的十进制狼群算法。该算法结合基于复合评价因子的最低水平线搜索算法,对人工狼的位置进行十进... 详细信息

为了使矩形件排样问题在可接受的时间内获得精确解,以在一定时间内获得高利用率的排样布局方案为研究目标,提出一种适合求解矩形件排样问题的十进制狼群算法。该算法结合基于复合评价因子的最低水平线搜索算法,对人工狼的位置进行十进制整数编码,重新设计游走和奔袭等智能行为,具有狼群算法的职责分工协作式搜索特性,能够较好地平衡算法的全局优化和局部搜索能力。采用多组算例对所提算法进行测试,并与其他元启发式和启发式算法进行对比,结果表明所提算法具有实用性和有效性。

关键词：排样问题狼群算法组合优化元启发式算法

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电荷直接隧穿特征时间的计算模型

计算物理 2007年第1期24卷 71-77页

作者：杨红官李晓阳刘全慧湖南大学应用物理系湖南长沙410082

在分析硅基纳米存储器的势结构和价带混合效应对直接隧穿过程影响的基础上,采用顺序隧穿理论和巴丁传输哈密顿方法,发展了电子和空穴直接隧穿时间的计算模型.利用该模型数值计算了硅基纳米存储器的编程时间和保留时间,讨论了结构参数和... 详细信息

在分析硅基纳米存储器的势结构和价带混合效应对直接隧穿过程影响的基础上,采用顺序隧穿理论和巴丁传输哈密顿方法,发展了电子和空穴直接隧穿时间的计算模型.利用该模型数值计算了硅基纳米存储器的编程时间和保留时间,讨论了结构参数和外加偏压对器件存储性能的影响,指出需要设计新的器件结构模型来优化硅基纳米存储器的保留特性.

关键词：直接隧穿传输哈密顿方法纳米存储器

煤矿超长斜井敞开式全断面掘进机施工可行性分析

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煤炭科学技术 2023年第7期51卷 310-320页

作者：汪青仓刘全辉宋朝阳李强任怀伟陕西延长石油榆林可可盖煤业有限公司陕西榆林719000 北京中煤矿山工程有限公司北京100013 中煤科工开采研究院有限公司北京100013

斜井是保障矿山高效生产的矿井开拓方式之一,可实现矿井主运连续化,大型采、掘、运装备可采用无轨胶轮化直接下井,无需地面拆解和井下大硐室中组装的复杂工序。为满足陕西可可盖煤矿10.0 Mt/a的产能需求,基于井筒开拓方式影响因素的分... 详细信息

斜井是保障矿山高效生产的矿井开拓方式之一,可实现矿井主运连续化,大型采、掘、运装备可采用无轨胶轮化直接下井,无需地面拆解和井下大硐室中组装的复杂工序。为满足陕西可可盖煤矿10.0 Mt/a的产能需求,基于井筒开拓方式影响因素的分析以及可可盖煤矿工程地质与水文地质条件的分析,提出了4版矿井开拓方案,考虑到外部运输条件便利、场地集中便于管理、缓坡斜井无轨胶轮化和无需换装等优势,初步确定了井田西部主副斜井+中部进回风立井的开拓方案;进一步梳理了煤矿长距离斜井钻爆法与机械破岩施工技术发展的现状与趋势,鉴于现有钻孔爆破法和悬臂掘进机作业线施工斜井存在掘进效率低、工序多、风险高等问题,提出了超长斜井采用全断面掘进机掘进的技术方案,论证了采用敞开式全断面掘进机施工的可行性和适用性;通过对比分析斜井围岩管片支护与锚网喷支护的优缺点,选择了近工作面锚网喷与局部围岩较破碎区段增设钢拱架的支护方式。根据可可盖煤矿工程地质与水文地质条件、环境条件、工程条件、建井技术、装备性能、施工工期、投资成本等因素的综合分析,可可盖煤矿主副斜井建设技术装备具有可行性和先进性,为同类型矿井开拓方式选择与超长斜井施工技术装备的确定提供了参考,为煤矿安全高效、绿色智能建设和发展奠定了基础。

关键词：矿井开拓超长距离斜井敞开式全断面掘进机建井

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