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Impurity-induced Shiba bound state in the BCS–BEC crossover regime of two-dimensional Fermi superfluid

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Chinese Physics B 2019年第7期28卷 162-167页

作者： Siqi shao Kezhao Zhou Zhidong Zhang Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China School of Materials Science and Engineering University of Science and Technology of China Shenyang 110016 China Department of Physics College of Science Hunan University of Technology Zhuzhou 412007 China

For a two-dimensional ultra-cold Fermi superfluid with an effective static magnetic impurity, we theoretically investigated the variation of the Yu–Shiba–Rusinov(YSR) bound state in the Bardeen–Cooper–Schrieffer(BCS) to Bose–Einstein condensation(BEC) crossover *** the framework of mean-field theory, analytical results of the YSR bound state energy were obtained as a function of the interaction ***, when the background Fermi superfluid system stays in the weakly interacting BCS regime, we found that the YSR bound state energy is linearly dependent on the gap parameter with its coefficient slightly different from previous ***, we discovered re-entrance phenomena for the YSR state and an upper bound of the strength of the interaction between the paired *** carefully analyzing the bound state energy as a function of the interaction parameters, we obtained a phase diagram showing the existence of the YSR ***, we concluded that the re-entrance phenomena and the critical point can be easily experimentally detected through measurement of radio-frequency spectroscopy and density of states using current experimental techniques.

关键词： ultra-cold quantum gases BCS–BEC crossover magnetic impurity Yu–Shiba–Rusinov(YSR) state

Crystal Structure of a Linear Ag(I) Complex with Niflumic Acid and Its Fluorescent Property

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Chinese Journal of Structural Chemistry 2006年第11期25卷 1387-1391页

作者： TAN Yu-Hui YANG shao-Ping LI Qing-Song TAN Yu-Li Department qf Pharmacy Gannan Medical University Ganzhou Jiangxi 341000 China Tianxin Hospital of zhuzhou Zhuzou Hzman 412001 China

A novel Ag（1） complex AgH（Nifa）2 1 （C26H17AgF6N4O4, Mr = 671.31） was synthesized through hydrothermal reaction of Ag2SO4 and Niflumic acid （HNifa）, and characterized by single-crystal X-ray determination, IR and fluorescent spectra. Crystal data for 1： monoclinic, space group C2/c, with a = 9.5446（16）, b = 12.3203（16）, c = 21.056 （3） A, β = 98.075（2）°, V= 2451.5（6） A^3, T = 293（2） K, Z = 4, D,. = 1.819 g/cm^3, F（000） = 1336,μ = 0.912 mm^-1, S = 1.001, （△ρ）min = 0.849, the final R = 0.0391 and wR = 0.1286. The local geometry around the central metal AgO） ion is linear. Two carboxylic acids of neighboring ligands sharing one hydrogen atom by two hydrogen bonds result in the formation of an infinite hydrogen-bonded chain. Solid-state fluorescence of I at room temperature shows that the maximal emission peak occurs in 439 nm.

关键词： niflumic acid silver(Ⅰ) complex hydrothermal synthesis fluorescence

Average Transient Lifetime and Lyapunov Dimension for Transient Chaos in a High-Dimensional System

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Chinese Physics Letters 2001年第11期18卷 1435-1437页

作者： HEN Hong TANG Jian-Xin TANG shao-Yan XIANG Hong CHEN Xin Department of Packaging Engineering Zhuzhou Engineering CollegeZhuzhou 412008 Department of Packaging EngineeringZhuzhou Engineering CollegeZhuzhou 412008

The average transient lifetime of a chaotic transient versus the Lyapunov dimension of a chaotic saddle is studied for high-dimensional nonlinear dynamical systems. Typically the average lifetime depends upon not only the system parameter but also the Lyapunov dimension of the chaotic saddle. The numerical example uses the delayed feedback differential equation.

关键词： equation. chaotic lifetime

Fatigue Crack Growth Behavior of Different Zones in an Annealed Automatic Gas Tungsten Arc Weld Joint of TA16 and TC4 Titanium Alloys

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Journal of Wuhan University of Technology(Materials Science) 2020年第6期35卷 1090-1097页

作者： shao Ling WU Sujun PENG Wenya DATYE Amit JU Hongbo LIU Ying Research Institute of Zhejiang University-Taizhou Zhejiang UniversityTaizhou 318000China School of Materials Science and Engineering Beihang UniversityBeijing 100191China AECC Hunan Aviation Powerplant Research Institute Zhuzhou 412000China Department of Mechanical Engineering&Materials Science Yale UniversityNew HavenCT 06511USA Key Laboratory of Advanced Welding Technology of Jiangsu Province Jiangsu University of Science and TechnologyZhenjiang 212003China Institute of Technology of Aircraft Engine Beijing Research Institute of Aviation EngineeringBeijing 100024China

Based on the investigated microstructure of different zones in the annealed automatic gas tungsten arc weld joint of TA16 and TC4 titanium alloys,the mechanical property of them was assessed under fatigue crack growth rate *** evaluation of fatigue crack growth rate,three points bending specimens were *** correlation between the range of stress intensity factor and crack growth rate was determined in different zones of the annealed weld *** crack growth rates were obviously different in different zones of weld joint of dissimilar titanium alloys,due to their different *** electron microscope examinations were conducted on the fracture surface in order to determine the relevant fracture mechanisms and crack growth mechanisms with respect to the details of microstructure.

关键词： dissimilar titanium alloys joining weld joint microstructure fatigue crack growth rate fracture

艺术美与生活美关系之谜的科学解答——对毛泽东《在延安文艺座谈会上的讲话》的一点解读

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湖南科技大学学报（社会科学版） 2004年第2期7卷 46-53页

作者：王少青王波湖南科技大学人文学院湖南湘潭411201 株洲工学院湖南株洲412008

艺术美与生活美的关系是美学史上的千古之谜,也是文艺创作和鉴赏实践中绕不开的难题。艺术美与生活美就其主要性质形态、生成构成、功能目的等方面是不同的,二者不能随意比较;而就其皆为"美"而言,又是可以比较的,这就是毛泽东所作出的"... 详细信息

艺术美与生活美的关系是美学史上的千古之谜,也是文艺创作和鉴赏实践中绕不开的难题。艺术美与生活美就其主要性质形态、生成构成、功能目的等方面是不同的,二者不能随意比较;而就其皆为"美"而言,又是可以比较的,这就是毛泽东所作出的"三个最"、"一个唯一"和"六个更"的著名结论和命题;其次,毛泽东在"讲话"中还精辟地分析了艺术美与生活美关系的辩证法,即二者相互依存、相互需要以及相互创造转化,充分体现了生活美对艺术美的基础支配地位和艺术美对生活美的超越和改造的审美创造和审美实践功能。

关键词：生活美艺术美艺术辩证法审美观文艺创作毛泽东审美实践功能毛泽东《在延安文艺座谈会上的讲话》

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高压变频器中变频切工频方式的应用研究

大功率变流技术 2012年第5期 28-30页

作者：郑少将罗仁俊彭力黄欢王龙株洲变流技术国家工程研究中心有限公司湖南株洲412001

随着高压变频器的广泛应用,变频切工频成为其中一个越来越重要的功能。文章根据感应电动机的定子电压方程和相量图,提出了基于锁相环原理的平稳切换理论,同时介绍了几种常见的切换方式。实际应用表明,这种同步切换方式可以有效降低切换... 详细信息

随着高压变频器的广泛应用,变频切工频成为其中一个越来越重要的功能。文章根据感应电动机的定子电压方程和相量图,提出了基于锁相环原理的平稳切换理论,同时介绍了几种常见的切换方式。实际应用表明,这种同步切换方式可以有效降低切换时的电机电流,保证了电动机的平稳过渡。

关键词：变频切工频锁相环同步切换

Effect of nickel-plated graphite on microstructure and properties of matrix for Fe-based diamond tools

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Transactions of Nonferrous Metals Society of China 2022年第5期32卷 1575-1588页

作者： Zhou SU shao-he ZHANG Jing-jing WU Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationCentral South UniversityChangsha 410083China School of Geosciences and Info-Physics Central South UniversityChangsha 410083China College of Civil Engineering Hunan University of TechnologyZhuzhou 412007China

Nickel-plated graphite particles and unmodified graphite particles with different contents were added to the Fe-based diamond *** basic properties of those specimens were measured,including relative density,hardness,bending strength,abrasion ratio and holding force *** also,SEM,XRD and EDS were used to carry out microstructure characterization,phase analysis and element distribution of these *** results show that nickel plating effectively improves the surface wettability of graphite *** it is determined that an element diffusion zone is formed on the transition interface between the nickel-plated graphite and the matrix materials,effectively enhancing the interfacial bonding ***,the pores and cracks in the matrix generated by adding the graphite particles are reduced after nickel ***,the loss of basic properties of the specimens is *** it is found the higher the graphite content is,the weaker the positive effect of nickel plating *** addition,it is revealed that nickel plating plays a conducive part in the formation of graphite lubricants on the working surface,and nickel-plated graphites can slow down the thermal corrosion of the diamond particles inside the high-temperature sintered specimens.

关键词： diamond composites nickel-plated graphite microstructure mechanical properties lubrication mechanism

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一种感应电机定转子互感参数离线辨识的方法

大功率变流技术 2012年第5期 51-54页

作者：牛颖张少云刘斐张铁军陈刚株洲变流技术国家工程研究中心有限公司湖南株洲412001

文章利用模型参考自适应系统(Model Reference Adaptive System,MRAS)在恒压频比起动的基础上进行电机转速辨识,并根据电机转子磁链的电压和电流模型,提出一种感应电机定转子互感参数Lm离线辨识方法,以便电机未完全空载时,也能离线辨识... 详细信息

文章利用模型参考自适应系统(Model Reference Adaptive System,MRAS)在恒压频比起动的基础上进行电机转速辨识,并根据电机转子磁链的电压和电流模型,提出一种感应电机定转子互感参数Lm离线辨识方法,以便电机未完全空载时,也能离线辨识出其互感参数。对无速度传感器转速辨识原理以及实现方法进行了介绍,并利用Matlab进行系统仿真,验证了算法的有效性。

关键词：感应电机模型参考自适应系统(MRAS) 无速度传感器互感参数辨识

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抗战时期日本帝国主义对沦陷区工矿业的掠夺

湘潭师范学院学报（社会科学版） 2004年第6期26卷 54-56页

作者：沈绍根杨育华湖南科技大学人文学院湖南湘潭411201 株洲五中湖南株洲412000

抗战时期日本帝国主义对中国沦陷区的工矿业进行了疯狂的掠夺:在东北,在"日满经济一体化"的口号下,对经济进行了全面的统制;"满铁"、"满业"两大会社对工矿业实行了高度的垄断。在华北和华中:日本政府把经济划分为统制事业和自由事业两种... 详细信息

抗战时期日本帝国主义对中国沦陷区的工矿业进行了疯狂的掠夺:在东北,在"日满经济一体化"的口号下,对经济进行了全面的统制;"满铁"、"满业"两大会社对工矿业实行了高度的垄断。在华北和华中:日本政府把经济划分为统制事业和自由事业两种,统制事业由两大"国策会社"经营,自由事业通过"军管理"、"委托经营"、"中日合办"、"租赁"、"收买"等五种方式占有。日本对沦陷区工矿业的掠夺,造成了中国工矿业的畸形发展,使中国民族资本主义陷入了绝境,也截断了中国工业化的进程。

关键词：抗日战争时期日本帝国主义沦陷区工矿业垄断组织中国