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china Welding 1995年第1期4卷 19-27页

作者： Shi Kai(xi’an Petroleum Institute)Wang Shiyan Qiu Fengxiang and xia Wei(xi’an Jiao Tong university)

The physics phenomena of copper and stainless steel in the process of forming friction welding joint are recorded and observed by the interrupted test *** test shows that the butt friction welding process of copper and stainless steel bar can be divided into three stages approximately: the adhesion at the beginning friction stage, the friction inside the copper and the plastic ring expansion, and the friction on the bound surface of copper-stainless steel and in stainless steel. During the process,the friction surface was transformed twice.

关键词： copper-stainless steel friction welding interrupted test method

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长输天然气管线的故障树研究

天然气工业 2005年第10期25卷 99-102页

作者：霍春勇董玉华高惠临西安交通大学中国石油大学西安石油大学

故障树分析是在复杂系统安全性和可靠性评价中被广泛应用的一项重要技术,在天然气长距离输送管线失效的预测和预防领域具有良好的应用前景。在数据采集和资料分析的基础上,按照泄漏和断裂两大失效模式,建立了某天然气长距离输送管线的... 详细信息

故障树分析是在复杂系统安全性和可靠性评价中被广泛应用的一项重要技术,在天然气长距离输送管线失效的预测和预防领域具有良好的应用前景。在数据采集和资料分析的基础上,按照泄漏和断裂两大失效模式,建立了某天然气长距离输送管线的故障树。采用故障树的定性分析方法,求得故障树的全部最小割集。采用故障树的定量分析方法,计算出故障树所有基本事件的发生概率、故障树基本事件概率重要度和临界重要度,进而确定了该天然气管线顶事件的失效概率。研究结果表明,制管质量、焊接质量、安装质量以及材料选择、机械损伤和操作人员素质等因素是影响该天然气管线安全可靠性的重要因素。进而开发出了天然气长距离输送管线故障树的计算机分析软件。

关键词：长距离输气管道泄漏断裂失效故障树计算机分析软件安全性故障树分析

Current gene therapy for stomach carcinoma

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World Journal of Gastroenterology 2001年第6期7卷 752-759页

作者： Chang-Tai Xu~1 Lian-Tian Huang~1 Bo-Rong Pan~2 1 Editorial Department,the Journal of Fourth Military Medical university2 Oncology Center,xijing Hospital,Fourth Military Medical university,169 Changle xilu,xi’an 710032,Shaanxi Province,china Editorial Department the Journal of Fourth Military Medical University Xi'an Shaanxi Province China. xuct2000@***

Gastric cancer is common in china [1-42],and its early diagnosis and treatment in advanced stage are difficult [31-50].In recent years ,gene study in cancer is a hotspot ,and great progress has been achieved [41-80] .... 详细信息

关键词： Gene Therapy Carcinoma Gene Transfer Techniques Humans Stomach Neoplasms

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高斯光束驱动的单输出环形腔光学双稳系统

红外研究 1989年第3期8卷 177-185页

作者：樊锡君田淑芬山东师范大学物理系山东师范大学半导体所

研究了高斯光束驱动的单输出环形腔光学双稳系统.用平均场近似方法得到纯吸收和共振情况下的定态方程,并进行了线性稳定性分析.结果表明,输入输出光强定态曲线仍呈现反向S型,但高斯光束驱动情况中的失稳范围与平面波光束驱动情况有明显... 详细信息

研究了高斯光束驱动的单输出环形腔光学双稳系统.用平均场近似方法得到纯吸收和共振情况下的定态方程,并进行了线性稳定性分析.结果表明,输入输出光强定态曲线仍呈现反向S型,但高斯光束驱动情况中的失稳范围与平面波光束驱动情况有明显不同.

关键词：高斯光束光学双稳态环形腔驱动

Restraining Factors and Improving Paths for the Operation Mechanism of New Rural Cooperative Medical System in china

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Asian Agricultural Research 2011年第2期3卷 105-108,115页

作者： QI Bin,TANG xia School of Management,xi’an Polytechnic university,xi’an 710048,china

The new rural cooperative medical system has achieved periodical achievements since its ***,there are many factors hampering the development of the new system,such as the high cost,the difficulties in fund procurement,the lack of management,the narrow coverage of benefit,the ineffective constraint to the designated medical institutions,the high fund balance rate,and the poor medical facilities and services in rural *** are put forward to solve these problems,including improving the system design,expanding the coverage of the system,expanding the fund sources,reducing the financing costs,strengthening the fund supervision,enhancing the supervision of designated medical institutions,and improving the capacity of health services in rural areas.

关键词： New rural cooperative medical system Restraining f

New Solitary Wave Solution of the Combined KdV and mKdV Equation

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浙江海洋学院学报（人文科学版） 1997年第3期14卷 30-34页

作者： Jiefang ZhangInstitute of Nonlinear physics and Deraftment of physics, Zhejiang Normal university, Jinhua 321004, Zhejiang, P. R. china

This paper presents two different methods for the construction of new exactsolitary wave solutions to the combined KdV and mKdV *** existtwelve types of soliton solutions which will reduce back to those of the *** exi... 详细信息

关键词：山口

Central simple Poisson algebras

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Science china Mathematics 2004年第2期47卷 245-263页

作者： SU Yucai & XU xiaopingDepartment of Mathematics, Shanghai Jiaotong university, Shanghai 200030, china Institute of Mathematics, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, china Department of Mathematics Shanghai Jiaotong University Shanghai China Institute of Mathematics Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing China

Poisson algebras are fundamental algebraic structures in physics and symplectic geometry. However, the structure theory of Poisson algebras has not been well developed. In this paper, we determine the structure of the central simple Poisson algebras related to locally finite derivations, over an algebraically closed field of characteristic *** Lie algebra structures of these Poisson algebras are in general not finitely-graded.

关键词： Poisson algebra, locally-finite operator, derivation, finitely-graded, isomorphism class.

Simulating a Chern Insulator with𝐶C=±2 on Synthetic Floquet Lattice

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Chinese physics Letters 2024年第9期41卷 1-8页

作者： Ling-xiao Lei Wei-Chen Wang Guang-Yao Huang Shun Hu xi Cao xin-Fang Zhang Ming-Tang Deng Ping-xing Chen Institute for Quantum Science and Technology College of ScienceNational University of Defense TechnologyChangsha 410073China Institute for Quantum Information&State Key Laboratory of High Performance Computing College of Computer Science and TechnologyNational University of Defense TechnologyChangsha 410073China Greatwall Quantum Laboratory Changsha 410006China Hefei National Laboratory Hefei 230088China

The synthetic Floquet lattice,generated by multiple strong drives with mutually incommensurate frequencies,provides a powerful platform for quantum simulation of topological *** this study,we propose a 4-band tight-binding model of the Chern insulator with a Chern number𝐶=±2 by coupling two layers of the half Bernevig–Hughes–Zhang lattice and subsequently mapping it onto the Floquet lattice to simulate its topological *** determine the Chern number of our Floquet-version model,we extend the energy pumping method proposed by Martin et al.[2017 ***.X 7041008]and the topological oscillation method introduced by Boyers et al.[2020 ***.125160505],followed by numerical simulations for both *** simulation results demonstrate the successful extraction of the Chern number using either of these methods,providing an excellent prediction of the phase diagram that closely aligns with the theoretical one derived from the original bilayer half Bernevig–Hughes–Zhang ***,we briefly discuss a potential experimental implementation for our *** work demonstrates significant potential for simulating complex topological matter using quantum computing platforms,thereby paving the way for constructing a more universal simulator for non-interacting topological quantum states and advancing our understanding of these intriguing phenomena.

关键词： properties. topological quantum

Research on the New Technology and System of Ultrasonic Honing

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厦门大学学报（自然科学版） 2002年第S1期41卷 66-67页

作者： ZHU xi-jing 1,2, XU Hong-jun 1, WANG Ai-ling 2, SHENG xin-quan 2 (1. Nanjing university of Aeronautics and Astronautics, Nanjing 210006, china 2. North china Institute of Technology, Taiyuan 030051, china)

In recent years, the new technology of ultrasonic vibration cutting has been drawing general attention. And great advancement in theory and applications in production of the technology have been achieved. Ultrasonic vibration honing system developed in North china Institute of Technology and Nanjing university of Aeronautics and Astronautics of cast iron cylinder (47×97) and thin cylinder of 20# (86×95) has been successfully applied to productive experiment and the technological effect obtained is ideal. In comparison with ordinary honing, ultrasonic vibration honing possesses apparent characteristics: Firstly, it has high processing precision (precision in size ranks IT6, roughness Ra0.05, circularty and cylindericity in size ranks IT6); Secondly, it has small cutting force and low temperature so that no deformation occurs; Thirdly, it has high efficiency. In this paper, the application of a new technique to honing is introduced, and the ultrasonic honing systems of thin cylinder and cast cylinder which have been successfully manufactured and their applying effect are illustrated. This paper analyzes the cutting principle of ultrasonic honing in terms of cutting motion, grain performance and cutting quantity. The study of this technique starts a new approach to which is efficient higher quality and lower consumption to hole’s precise and superprecise machining. At last,the paper introduce the conclution: Ultrasonic honing sharpens grain, which is favorable for raising cutting efficiency; Ultrasonic vibration honing may increase honing depth and raise cutting efficiency. It may also decrease honing power and system deformation; Undergoing practice we can find that the ultrasonic honing system as above discribed can be extended and applied to production. The system not only can be applied to conventional honing machine, its technology effect as good as high precision machine tool, but also can be applied to develop and study ultrasonic vibrating numbrical controlli

关键词： ultrasonic honing cutting principle cylinder applying effect

Luminol-potassium permanganate chemiluminescence system for the determination of three anthracycline antibiotics

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Journal of Pharmaceutical Analysis 2010年第1期22卷 20-24页

作者： Hong-Ling Yu,Yu-Hai Tang,Hai-Yan Lü,Jing-Feng Yi Institute of Analytical Sciences,School of Sciences,xi’an Jiaotong university,xi’an 710061,china. Institute of Analytical Sciences School of Sciences Xi'an Jiaotong University Xi'an 710061 China

Objective To establish a flow-injection chemiluminescence method for the determination of doxorubicin,epirubicin and mitoxantrone and study its reaction *** In alkaline medium,chemiluminescence of luminol-potassium permanganate system could be inhibited obviously by anthracycline *** with flow-injection technique,a new chemiluminescence method for determining the anthracycline antibiotics was set *** chemiluminescence mechanism of the luminol-potassium permanganate system was also *** Under optimal conditions,the good linear ranges of doxorubicin,epirubicin and mitoxantrone were 5.0×10-9-1.0×10-6g/mL,1.0×10-9-1.0×10-5g/mL and 3×10-9-1.0×10-6g/mL,*** detection limits of doxorubicin,epirubicin and mitoxantrone were 3.0×10-9g/mL,5.0×10-8g/mL and 2.0×10-9g/mL,*** eleven repeated inter-day and intra-day precision tests of 1.0×10-6g/mL samples,the relative standard deviations corresponded to reference values of 3.0%,2.8% and 2.1%.Conclusion The developed method is sensitive,accurate,rapid and of low *** can be applied to determine doxorubicin hydrochloride,epirubicin hydrochloride and mitoxantrone hydrochloride in injection preparations.

关键词： flow-injection chemiluminescence anthracycline antibiotics