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Entanglement of Two-Qubit Quantum Heisenberg XYZ Chain

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Chinese Physics Letters 2002年第8期19卷 1044-1047页

作者： Xi Xiao-Qiang Hao San-Ru chen wen-xue Yue Rui-Hong Institute of Modern Physics Northwest University Xi'an 710069 Fundamental Department of Xi'an Institute of Posts and Telecommunications Xi'an 710061

We derive the analytic expression of the concurrence in the quantum Heisenberg XYZ model and discuss the influence of parameters J, Δ and Γ on the concurrence. By choosing different values of Γ and Δ, we obtain the XX, XY, XXX and XXZ chains. The concurrence decreases with increasing temperature. When T→0, the concurrence reaches its maximum value 1, *** entangled state, |Ψ = (((2)1/2)/2)(|01-|10), is maximum entanglement. For the XXZ chain, when Γ→∞, the concurrence will meet its maximum value max = (sinh (1/T))/(cosh (1/T)).

关键词： Chains

Multi-Wavelength Conversion Based on Single Wavelength Results in Phase Retardation Measurement

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Chinese Physics Letters 2013年第3期30卷 60-62页

作者： chen wen-xue ZHANG Shu-Lian LONG Xing-Wu Department of Opto-electronic Engineering College of Opto-electronic Science and EngineeringNational University of Defense TechnologyChangsha 410073 The State Key Lab of Precision Measurement Technology and Instrument Department of Precision InstrumentsTsinghua UniversityBeijing 100084

We introduce an instrument for single wavelength measurement of phase retardation based on the laser feedback phenomenon.A method of multi-wavelength conversion for this instrument is proposed and the conversion results are *** calibration is used to eliminate the conversion *** experimental results show that the maximum error after conversion is 0.26°.Through the present work,the application of laser feedback instrument for single wavelength measurement of a wave plate is expanded to the multi-wavelength *** will expand the application area of the instruments.

关键词： instrument eliminate expanded

Phase Tuning Characteristics of a Double-Longitudinal-Mode He-Ne Laser with Optical Feedback

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Chinese Physics Letters 2012年第9期29卷 80-83页

作者： ZENG Zhao-Li ZHANG Shu-Lian TAN Yi-Dong chen wen-xue LI Yan The State Key Lab of Precision Measurement Technology and Instruments Department of Precision InstrumentsTsinghua UniversityBeijing 100084

The phase tuning characteristics of a double-longitudinal-mode He-Ne laser with optical feedback are *** phase behaviors of the two adjacent longitudinal modes are studied with different laser cavity lengths at the weak feedback level,and it is found that the phase difference of the two modes can be 0 to 180°along with the changing of the length of external *** high-density intensity fringes are obtained with asymmetric feedback cavity at a strong feedback *** particular,the phase difference is also observed between the two high-density fringes of adjacent modes,which have the potential to develop a direction sensitive laser feedback interferometer with high resolution.A simple theoretical analysis is presented,which fits well with the experimental results.

关键词： interferometer tuning cavity

Optical Beam Deflection Technique to measure Absorptivity distribution of Optical Thin Film

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光电子·激光 1989年第2期 111-113页

作者： chen wen-bin Huang xue-boOptical Engineering Department Zhejiang University,P.R.China

Optical beam deflection (OBD) is a new and very useful technique in scientific research and industry. It has been used, for instance, in combution diagnostics to measure flowvolosity, temperature and concentration in a flame, in material science and industry to do non-destructive testing and measure thermal parameters and absorptivity. It is also a high sensitive spectroscopy when the wave-length seaning.

关键词： Optical Beam Deflection Technique to measure Absorptivity distribution of Optical Thin Film Thin

基于最小损伤值的齿轮毛坯锻造成形过程工艺参数优化设计

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上海交通大学学报 2005年第7期39卷 1070-1072页

作者：陈学文王进陈军阮雪榆上海交通大学模具CAD国家工程研究中心上海200030

介绍了材料损伤的基本原理以及Cockroft-Latham损伤模型,提出了一种基于简约下降梯度法的锻造成形工艺优化方法.设计过程中,采用有限元分析技术与优化技术相结合的方法优化变形工艺参数,使得工件内部损伤值最小.用锻件(除去飞边部分)所... 详细信息

介绍了材料损伤的基本原理以及Cockroft-Latham损伤模型,提出了一种基于简约下降梯度法的锻造成形工艺优化方法.设计过程中,采用有限元分析技术与优化技术相结合的方法优化变形工艺参数,使得工件内部损伤值最小.用锻件(除去飞边部分)所有单元的最大损伤值为衡量锻件变形损伤的指标,以零件毛坯的初始高径比为设计变量,建立了优化设计的数学模型.应用该方法对齿轮毛坯非等温热锻成形工艺参数进行优化,取得了良好的效果.

关键词：锻造损伤数值模拟工艺参数设计优化

Effects of Chinese Herb Additive on Milk Yield and Anti-heat Stress Ability of Holstein Cows

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Animal Husbandry and Feed Science 2010年第2期2卷 38-40页

作者： ZHAO Zheng chen xue-wen LI Shi-jian Department of Animal Science Guangxi Agricultural Vocational Technical College Nanning 530007 China Guangxi Royal Dairy Co. Ltd. Nanning 530007 China

[Objective] To explore the effects of Chinese herb additive on milk yield and anti-heat stress ability of Holstein diary cow. [Method] A total of 36 Holstein cows at same parity and with similar milk yield were randomly divided into three groups, namely, control group, Chinese medi- cine group I and Chinese medicine group I1. The cows in the Chinese medicine group I were fed basal diet containing 4% compound Chinese herb additive; those in the Chinese medicine group II were fed basal diet containing 3% compound Chinese herb additive; and those in the control group were fed common basal diet. All cows in the three groups were analyzed comparatively. [Result] Supplementing some compound Chinese herb ad- ditive into basal diet increased milk yield and anti-heat stress ability of Holstein cows, besides, it also decreased cow diseases like cow mastitis. The Chinese medicine group I generated the highest economic benefit of practical production. [ Conclusion] Supplementing Chinese herb additive in- to basal diet is an effective way to relieve heat stress and increase milk yield.

关键词： Chinese herb additive Holstein diary cow Milk yield Anti-heat stress

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掺气水流掺气浓度缩尺影响的估计

水利学报 2005年第12期36卷 1420-1425页

作者：谢省宗陈文学中国水利水电科学研究院水力学研究所北京100038

根据紊动扩散理论和相似理论导出了掺气水流试验的9个模型相似律。研究表明,若要求掺气水流的掺气浓度原、模型相似,并按重力相似律引伸,则掺气气泡的上浮速度应和水流流速一样满足重力相似律。在模型采用和原型相同的介质,即水和空气... 详细信息

根据紊动扩散理论和相似理论导出了掺气水流试验的9个模型相似律。研究表明,若要求掺气水流的掺气浓度原、模型相似,并按重力相似律引伸,则掺气气泡的上浮速度应和水流流速一样满足重力相似律。在模型采用和原型相同的介质,即水和空气进行试验时,由于气泡上浮速度不相似,引起掺气浓度巨大的缩尺影响,本文首次对这种影响进行定量估计。研究表明,模型的比尺λL应足够大,以减小掺气浓度的缩尺影响。

关键词：紊动扩散理论相似理论掺气水流掺气浓度气泡上浮速度缩尺影响

Targeting cholesterol trafficking to mitigate axonal degeneration in hereditary spastic paraplegia

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Neural Regeneration Research 2025年第5期20卷 1397-1398页

作者： Zhenyu chen xue-Jun Li Department of Biomedical Sciences University of Illinois College of Medicine RockfordRockfordILUSA Department of Bioengineering University of Illinois at ChicagoChicagoILUSA

Axonal degeneration underlies many debilitating diseases including hereditary spastic paraplegia(HSP),a genetically and clinically diverse group of disorders characterized by spasticity and weakness of the lower *** is one significant cause of chronic neurodisability due to the lack of effective treatments and a wide range of onset ages from early childhood to 70 years.

关键词： degeneration diseases hereditary

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超导体界面层的电场电荷分布及起源

物理学报 2006年第12期55卷 6622-6629页

作者：杨鹏飞陈文学陕西广播电视大学榆林市分校榆林719000 西安邮电学院应用数学与物理系西安710061

从相对论性超导场方程出发,探讨了弱磁场条件下超导体界面层的结构及形成机理.得出在超导体界面层电场、电势差、Hall效应及电荷密度“三明治”式层叠结构的存在,是源于满足相对论协变性要求的势场可观测效应.并提出了一个实验思路,以... 详细信息

从相对论性超导场方程出发,探讨了弱磁场条件下超导体界面层的结构及形成机理.得出在超导体界面层电场、电势差、Hall效应及电荷密度“三明治”式层叠结构的存在,是源于满足相对论协变性要求的势场可观测效应.并提出了一个实验思路,以期验证该观点的正确性.

关键词：超导界面层电场相对论效应层叠结构