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Quantum Effect in a Diode Included Nonlinear Inductance-Capacitance Mesoscopic Circuit

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Communications in Theoretical Physics 2009年第9期52卷 534-538页

作者： yan zhan-Yuan zhanG Xiao-Hong MA Jin-Ying School of Mathematics and Applied Physics North China Electric Power University Baoding 071003 China

The mesoscopic nonlinear inductance-capacitance circuit is a typical anharmonie oscillator, due to diodes included in the circuit. In this paper, using the advanced quantum theory of mesoseopie circuits, which based on the fundamental fact that the electric charge takes discrete value, the diode included mesoscopic circuit is firstly studied. Schrodinger equation of the system is a four-order difference equation in p rep asentation. Using the extended perturbative method, the detail energy spectrum and wave functions axe obtained and verified, as an application of the results, the current quantum fluctuation in the ground state is calculated. Diode is a basis component in a circuit, its quantization would popularize the quantum theory of mesoscopie circuits. The methods to solve the high order difference equation are helpful to the application of mesoscopic quantum theory.

关键词： mesoscopic circuit quantum effects

Deep Seismogenic Environment in the Southern Section of the Longmenshan Fault Zone on the Eastern Margin of the Tibetan Plateau and Lushan M_s 7.0 Earthquake

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Acta Geologica Sinica(English Edition) 2015年第2期89卷 519-530页

作者： LI Dahu DING Zhifeng zhan yan WU Pingping YE Qingdong Institute of Geophysics China Earthquake Administration Earthquake Administration of Sichuan Province Institute of Geology China Earthquake Administration

The 2,026 earthquake events registered by the Sichuan regional digital seismic network and mobile seismic array after the April 20th, 2013 Lushan earthquake and 28,188 pieces of data were selected to determine direct P waves arrival times. We applied the tomographic method to inverse the characteristics of the velocity structure for the three-dimensional （3D） P wave in the mid-upper crust of the seismic source region of the Lushan earthquake. The imaging results were combined with the apparent magnetization inversion and magnetotelluric （MT） sounding retest data to comprehensively study the causes of the deep seismogenic environment in the southern section of the Longmenshan fault zone and explore the formation of the Lushan earthquake. Research has shown that there are obvious differences in velocity structure and magnetic distribution between the southern and northern sections of the Longmenshan fault zone. The epicenter of the Lushan earthquake is located near the boundary of the high and low-velocity anomalies and favorable for a high-velocity section. Moreover, at the epicenter of the Lushan earthquake located on the magnetic dome boundary of Ya＇an, the development of high velocity and magnetic solid medium favors the accumulation and release of strain energy. Low- velocity anomalies are distributed underneath the are of seismogenic origin, The inversion results of the MT retest data after the April 20th Lushan earthquake also indicate that there a high-conductor anomaly occurs under the area of seismogenic origin of the Lushan earthquake, Therefore, we speculated that the presence of a high-conductivity anomaly and low-velocity anomaly underneath the seismogenic body of the Lushan earthquake could be related to the existence of fluids. The role of fluids caused the weakening of the seismogenic layer inside the mid-upper crust and resulted in a seismogenic fault that was prone to rupture and pIayed a triggering role in the Lushan earthquake.

关键词： The Longmenshan fault zone Lushan earthquake the three-dimensional velocitystructure the apparent magnetization inversion magnetotelluric sounding

Molecular Mapping of a Gene for Resistance to Stripe Rust in Wheat Variety PIW138

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Agricultural Sciences in China 2010年第9期9卷 1285-1291页

作者： YUE yan-li YAO zhan-jun REN Xin-xin WANG Li College of Agronomy Agricultural University of Hebei Baoding 071001 P.R.China

Stripe rust, caused by Puccinia striiformis f. sp. tritici （Pst）, is one of the most damaging diseases of common wheat （Triticum aestivum L.）. Wheat variety PIW138 introduced from Pakistan is resistant to the currently prevailing Pst race CYR32 in China. In this study, the bulked segregant analysis （BSA） method and simple sequence repeat （SSR） markers were used to map the stripe rust resistance gene in PIW138. The resistant and susceptible DNA bulks were prepared from the segregating F2 population of the cross between Thatcher, a susceptible variety as the female parent, and PIW138 as the male parent. The segregation of resistant and susceptible F2 plants inoculated with CYR32 indicated that single dominant gene determined the reactions of PIW138 line and temporarily designated as YrP138. Total 200 SSR primers were screened, and 4 SSR markers, Xwmc52, Xbarc61, Xgwm268, and Xgwm153, on chromosome 1B were found to be polymorphic between the resistant and the susceptible DNA bulks as well as their parents. Genetic linkage was tested on the segregating F2 population with 259 plants, including 196 resistant and 63 susceptible plants. All 4 SSR markers were linked to the stripe rust resistance gene in PIW138. The genetic distances of Xwmc52, Xbarc61, Xgwm268, and Xgwm153 to the resistance gene were 29.8, 6.2, 6.8, and 8.2 cM, respectively.

关键词： wheat Puccinia striiformis f. sp. tritici resistance gene microsatellite marker

Upper crustal velocity and seismogenic environment of the M7.0 Jiuzhaigou earthquake region in Sichuan, China

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Earth and Planetary Physics 2021年第4期5卷 348-361页

作者： DaHu Li ZhiFeng Ding yan zhan PingPing Wu LiJun Chang XiangYu Sun Chengdu Institute of the Tibetan Plateau Earthquake Research China Earthquake AdministrationChengdu 610041China Institute of Geophysics China Earthquake AdministrationBeijing 100081China Institute of Geology China Earthquake AdministrationBeijing 100029China

On August 8,2017,a magnitude 7.0 earthquake occurred in Jiuzhaigou County,Sichuan Province,*** deep seismogenic environment and potential seismic risk in the eastern margin of Tibetan Plateau have once again attracted the close attention of seismologists and scholars at home and *** post-earthquake scientific investigation could not identify noticeable surface rupture zones in the affected area;the complex tectonic background and the reason(s)for the frequent seismicity in the Jiuzhaigou earthquake region are *** order to reveal the characteristics of the deep medium and the seismogenic environment of the M7.0 Jiuzhaigou earthquake region,and to interpret the tectonic background and genesis of the seismicity comprehensively,in this paper,we have reviewed all available observation data recorded by the regional digital seismic networks and large-scale,dense mobile seismic array(China Array)for the northern section of the North-South Seismic Belt around Jiuzhaigou earthquake *** double-difference seismic tomography method to invert the three-dimensional P-wave velocity structure characteristics of the upper crust around the Jiuzhaigou earthquake region,we have analyzed and discussed such scientific questions as the relationship between the velocity structure characteristics and seismicity in the Jiuzhaigou earthquake region,its deep tectonic environment,and the ongoing seismic risk in this *** report that:the P-wave velocity structure of the upper crust around the Jiuzhaigoug earthquake region exhibits obvious lateral inhomogeneity;the distribution characteristics of the shallow P-wave velocity structure are closely related to surface geological structure and formation lithology;the M7.0 Jiuzhaigou earthquake sequence is closely related to the velocity structure of the upper crust;the mainshock of the M7.0 earthquake occurred in the upper crust;the inhomogeneous variation of the velocity structure of the Jiuzhaigou earthquake area and

关键词： the M7.0 Jiuzhaigou earthquake 3D P-wave velocity structure deep tectonic seismogenic environment

基于智能物联网技术的高校实验室信息管理系统研究

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实验与分析 2024年第2期2卷 79-82页

作者：丁锰赵东越严展陈泷中国人民公安大学侦查学院北京100038 中国人民公安大学公共安全行为科学实验室北京100038

本论文旨在探讨智能物联网技术在提升高校实验室信息管理系统(LIMS)方面的可用性问题。论文分析了现行LIMS的局限性,提出了物联网技术在提高管理效率和安全性方面可能出现的应用模式。此外,研究还通过对国内外LIMS发展过程进行比较,提... 详细信息

本论文旨在探讨智能物联网技术在提升高校实验室信息管理系统(LIMS)方面的可用性问题。论文分析了现行LIMS的局限性,提出了物联网技术在提高管理效率和安全性方面可能出现的应用模式。此外,研究还通过对国内外LIMS发展过程进行比较,提出了云计算、人工智能等技术的集成解决方案和建议,并总结了物联网技术对于促进高校科研和教学创新的重要作用。

关键词：智能物联网实验室信息管理系统云计算教学管理

Slag Melting Characteristic of Slag Forming and Slag Splashing for BOF Less Slag Smelting

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Journal of Iron and Steel Research International 2012年第7期19卷 20-25,32页

作者： WU Wei MENG Hua-dong LIU Liu YUAN Tian-xiang BAI yan-jiang yan zhan-hui Metallurgical Technology Research Department Central Iron and Steel Research InstituteBeijing 100081China Steelmaking Works Shougang Jingtang Iron and Steel Co LtdTangshan 063200HebeiChina

The slag melting characteristic of slag forming and slag splashing for 300 t BOF less slag process is researched by combining the methods of the slag chemical composition, the melting point determination and the petrographic analysis. The results show that the melting point of final slag for less slag smelting is 20 ~C lower than that for conventional smelting. According to results of the petrographic analysis, the C3S （3CaO ~ SiO2） and C2S （2CaO · SiO2） content for less slag smelting are lower than those for conventional smelting, while the RO （FeO, MgO, MnO, etc） phase and C4AF （4CaO · Al2O3· Fe2O3） phase are higher than those for conventional smelting. According to results of the chemical analysis, the （CaO） content and slag basicity for less slag smelting are higher than those for conventional smelting, while （FeO） and （MgO） content in slag for less slag smelting are almost equal to those for conventional smelting. The reason why slag melting point for less slag smelting is lower than that for con- ventional smelting is that the quantity of added fluorite for less slag smelting is more than that for conventional smel- ting. According tO the analysis results the slag melting point is determined by the C3S, C2S, RO phase and C4AF content. According to the results of slag melting characteristic before and after slag splashing for less slag smelting, the present adjusting slag process has little effect. It is important to adjust the composition of BOF final slag. The （FeO） content in slag is to be reduced at the slag splashing and adjusting slag process for less slag smelting.

关键词： less slag smelting melting point determination petrographic analysis slag forming process slag splashing

A novel forced motion apparatus with potential applications in structural engineering

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2020年第7期21卷 593-608页

作者： Lin ZHAO Xi XIE yan-yan zhan Wei CUI Yao-jun GE Zheng-chun XIA Sheng-qiao XU Min ZENG Stale Key Laboratory of Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China Key Laboratory of Transport Industry of Wind Resistant Technology for Bridge Structures Tongji UniversityShanghai 200092China China Railway Siyuan Survey and Design Group Co.Ltd. Wuhan 430063China China Railway Engineering Design and Consulting Group Beijing 100055China

This paper reviews the development of forced motion apparatuses(FMAs) and their applications in wind engineering. A kind of FMA has been developed to investigate nonlinear and nonstationary aerodynamic forces considering the coupled effects of multiple degrees of freedom(DOFs). This apparatus can make section models to vibrate in a prescribed displacement defined by a numerical signal in time domain, including stationary and nonstationary movements with time-variant amplitudes and frequencies and even stochastic displacements. A series of validation tests show that the apparatus can re-illustrate various motions with enough precision in 3 D coupled states of two linear displacements and one torsional displacement. To meet the requirement of aerodynamic modeling, the flutter derivatives of a box girder section are identified, verifying its accuracy and feasibility by comparing with previously reported results. By simulating the nonstationary vibration with time-variant amplitude, the phenomena of frequency multiplication and memory effects are examined. In addition to studying the aerodynamics of a bluff body under large amplitudes and nonstationary vibrations, some potential applications of the proposed FMA are discussed in vehicle-bridge-wind dynamic analysis, pile-soil interaction, and line-tower coupled vibration aerodynamics in structural engineering.

关键词： Forced motion apparatus(FMA) Coupled vibration Stochastic vibration simulation Aerodynamic force Frequency multiplication Memory effects Wind engineering Potential applications

Characteristics of the three-dimensional deep electrical structure in the Helan Mountains-Yinchuan Basin and its geodynamic implications

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Science China Earth Sciences 2023年第3期66卷 505-520页

作者： Lingqiang ZHAO Xiangyu SUN yan zhan Jing HAN Haibo yanG Peijie WANG Xuehua LIU State Key Laboratory of Earthquake Dynamics Institute of GeologyChina Earthquake AdministrationBeijing 100029China Lhasa National Geophysical Observation and Research Station Lhasa 850004China The Second Monitoring and Application Center China Earthquake AdministrationXi’an 710043China

Located in the north segment of the North-South seismic belt where the Alxa block(AB)and the Ordos block(OB)contact,the Helan Mountains-Yinchuan Basin(HLM-YCB)constitutes a typical normal faulting basin-mountain structure on the Chinese *** 1739 M8.0 Pingluo earthquake occurred in the Yinchuan fault depression basin with such a basinmountain *** on five magnetotelluric profiles encompassing distinct segments of the HLM-YCB were utilized for three-dimensional(3D)joint inversion in order to collect fine 3D electrical structure information at a crustal and upper mantle scale across the entire *** electrical structure between the main blocks in the HLM-YCB and adjacent areas is characterized by east-west horizontal blocks OB,YCB,and HLM,which are divided by the Yellow River fault(F5)with the HLM eastern piedmont fault(F2)as electrical boundary zones on the east and west *** two main block units,AB and OB,exhibit an obvious layered resistivity ***,the HLM-YCB is characterized by a typical basin-mountain structure with the mountains as a high-resistivity body and the basin as a low-resistivity body,and in the northern YCB a large-scale lowresistivity structure exists,extending to the upper mantle,probably derived from the upwelling of mantle-derived *** is speculated from a combination of recent 3D crustal movement field information and other data that the HLM-YCB is an active tectonic zone formed via regional tensile *** formation of the HLM-YCB lies in the interaction of the Tibetan Plateau(TP),AB,and OB and abnormal mantle activities beneath the *** HLM-YCB reflects the joint action of upwelling and diffluence caused by the underplating of hot materials from the deep mantle with gravity and the redistribution of regional tectonic stress on the earth’s surface,which may be the main dynamic reason for the 1739 M8.0 Pingluo earthquake.

关键词： Helan Mountains Yinchuan Basin Magnetotelluric 3D electrical structure The 1739 Pingluo earthquake

AN OVERVIEW ON THE URBAN-RURAL INTERACTION IN THE PAST 50 YEARS IN CHINA

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Chinese Geographical Science 2001年第3期11卷 2-9页

作者： Qi Lu Jin-yan zhan Kang-won Lee Institute of Geographic Science and Natural Resources Research the Chinese Academy of Sciences Beijing P. R. China Department of Geography Seoul National University Korea

China is a country with a long history of agricultural development,the tr adition of bureaucratic administra-tion and economic management system s for the social *** its t ransition from traditional society to modern soci-ety during the past 50years,the rela tions between rural areas and urban a reas have been kept abnormal if considered from the point of view of the modernized co ***,China still has its more than 70percent of population,bu t limited capital,lower technology and underdeveloped culture,in the rural *** unbalance forms not only the o bstacles to China’s modernization of social development,but also the barriers to th e society,economy and environment sustainable *** paper focuses on the dis cussion about the coordinate develo pment of the relations between rural and urban in the past 50years,and the authors hold that only has the abnormal relation between the two areas been corrected,could China’s future development of natio nal economy be successful.

关键词： urban-rural interaction coordin ate development of urban-rural rela tion development of national econo-my