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Rare Metals 2010年第5期29卷 473-479页

作者： LIU Yang,FU Yanqiang,JIN Chuan,and FENG Chun department of Materials physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,china department of Materials physics and Chemistry University of Science and Technology Beijing Beijing China

The exchange coupling at the ferromagnetic/antiferromagnetic （FM/AFM） interface is influenced by both the magnetic structure and the crystalline micro-structure. Co/FeMn/Co thin films with 0.4 nm Pt spacer layer inserted into the Co/FeMn and FeMn/Co interface respectively were deposited by means of magnetron sputtering. The two interfaces upon and beneath the FeMn layer show distinct behaviors before and after the Pt spacer inserted. There is a remarkable shrink of the interracial uncompensated spins within the FeMn bottom interracial monolayers, whereas a relaxation of the pinning strength of the FeMn interfacial spins along the out-of-plane direction occurs at the top in- terface. XRD analysis indicates the Pt layer upon the FeMn layer forms an fcc （002） texture, implying the magnetic discrepancy between the top and bottom FeMn interfaces has crystalline structural origins.

关键词： interfaces exchange coupling exchange bias spacer stress anisotropy lattice match

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广义次正定矩阵

烟台师范学院学报（自然科学版） 1996年第4期12卷 249-251页

作者：姚存峰济宁师专数学系

定义了广义次正定矩阵，研究了广义次正定矩阵的一些性质。

关键词：次正定矩阵广义次正定矩阵矩阵

W±π_t-+ Associated Production at Large Hadron Collider

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Communications in Theoretical physics 2004年第10期42卷 573-576页

作者： HUANG Jin-Shu PAN Qun-Na department of physics,Henan Nanyang Normal college,Nanyang 473061,china

In this paper we calculate the production of a charged top pion in association with a W boson at theCERN Large Hadron Collider（LHC）in the context of the topcolor assisted technicolor *** find that the crosssection of pp →b■→W±π_t-+is roughly corresponding to the result of the process pp→b■→W±H-+in the minimalsupersymmetric standard model,and for reasonable ranges of the parameters,the cross section can reach a few *** W±π_t?signal should be clearly visible at LHC unless π_t?is very heavy.

关键词： topcolor assisted technicolor model top pion cross section Large Hadron Collider

Using lightning locating system based on time-of-arrival technique to study three-dimensional lightning discharge processes

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Science china Earth Sciences 2010年第4期53卷 591-602页

作者： ZHANG GuangShu1,WANG YanHui1,QIE XiuShu2,ZHANG Tong1,ZHAO YuXiang1,3,LI YaJun1 & CAO DongJie11 Laboratory for Climate Environment and Disasters of Western china,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,china 2 Laboratory for Middle Atmosphere and Global Environment Observation(LAGEO),Institute of Atmospheric physics,Chinese Academy of Sciences,Beijing 100029,china 3 department of physics,Tianshui Normal college,Tianshui 741001,china 1. Laboratory for Climate Environment and Disasters of Western china Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China2. Laboratory for Middle Atmosphere and Global Environment Observation (LAGEO) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China3. Department of Physics Tianshui Normal College Tianshui 741001 China

A time-of-arrival(TOA) system based on GPS technology for locating VHF radiation sources from lightning has been developed and used in observation sites in the northern Shandong Province,*** 3D images of the lightning progression have been obtained successfully for the first time in *** 3D-channel evolutions of typical negative CG,positive CG and IC lightning flashes have been discussed together with the data of fast electric field *** was found that significant differences existed between the negative and positive CG lightning flashes in terms of the initiation and propagation of the radiation *** preliminary breakdown of a negative CG lightning flash propagated at a speed about 5.2×104 m/*** stepped leader of negative CG lightning flashes was trigged by negative initial ***,it propagated downward at a speed of 1.3×105 m/*** initial process of the positive CG lightning flashes was also a propagation process of negative *** streamers propagated dominantly horizontally in the positive charge region and accumulated positive charges at the origin of the lightning,and as a consequence,initiated downward positive streamers.A new type of lightning discharge that was triggered by a narrow bipolar pulse(NBP) is discussed in this *** NBP was originated at altitude of about 10.5 km in the upper positive charge *** a distinct difference from normal IC flash,its channels extended horizontally all around and produced a lot of radiation *** source power of the NBP could approach 16.7 kW,which is much greater than that of normal lightning discharge ranging between 100 mW and 500 *** 3D propagation of this new type of lightning discharge was observed and obtained for the first time in *** possible initiation mechanism of this new type of light-ning is discussed here.

关键词： time-of-arrival(TOA) technique three dimensional lightning locating system discharge process narrow bipolar pulse new-type of IC lightning

Magnetocaloric effect of (Gd_(1-x)Nd_x)Co_2 alloys in low magnetic field

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Rare Metals 2008年第4期27卷 350-353页

作者： CHEN Xiang ZHUANG Yinghong YAN Jialin ZHOU Kaiwen LI Kefeng Key laboratory of the Ministry of Education of china for Nonferrous Metal Materials and New Processing Technology Guangxi University Nanning 530004 China department of physics and Electronic Informational Engineering Neijiang Teachers College Neijiang 641002 China

The phases and magnetocaloric effect in the alloys （Gd1-xNdx）Co2 with x = 0, 0.1, 0.2, 0.3, and 0.4 were investigated by X-ray diffraction analysis and magnetization measurement. The samples are single phase with a cubic MgCu2-type structure. The To decreases obviously with increasing Nd content from 404 K of the alloy with x = 0 to 272 K of the alloy with x = 0.4; forx = 0.3, the To is 296 K, which is near room temperature. In the samples （Gd1-xNdx）Co2 with x = 0.0, 0.1, 0.2, 0.3, and 0.4, the maximum magnetic entropy change is 1.471, 1.228, 1.280, 1.381 and 1.610 J·kg^-1·K^-1, respectively, in the applied field range of 0-2.0 T. The results of Arrott plots confirmed that the transition type were second order magnetic transition forx = 0, 0.3, and 0.4.

关键词： magnetic refrigeration materials magnetocaloric effect magnetic entropy change phase transition

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放大器低压下增益升高原因的讨论及解决方法

济宁师范专科学校学报 2003年第5期24卷 8-9页

作者：房永钢济宁师专物理系山东济宁272025

负反馈放大器在开关机时会产生增益升高的现象 ,严重时会造成整个系统瞬时崩溃。本文详细讨论产生增益升高的原因 ,并给出了具体的解决方法。

关键词：负反馈放大器电源电压增益升高稳定富余量工作频率幅度富余量相位富余量

Prediction of the Extreme Values and the OptimalRatios of Triple Jump Based on the Grey System Theory

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Systems Science and Systems Engineering 1999年第1期9卷 40-50页

作者： XU Ming(department of physical Education, P.O.Boxl-36, Leshan, Sichuan, 614802, china)ZHANG Feng(Foreign Languages Deaprtment of Leshan teachers college, Leshan, Sichuan, 614000, china)CHANG C.A.(department of physics, University of Western Ontario, Lond

We have applied the grey system theory to study triple jumps. In this Paper we introducethe grey system theory, apply it to establish a monotonic sequence nonlinear Verhulst differentialdynamic model. Using that model and the triple jump records in recent 45 years we calculate thefuture extreme values of world triple jump, predict the optimal apportionment among the three phases,and study the tendency of development of triple jumP techniques and strategy. Every event has itsown development, maturity and peak periods. Our study helps coaches and athletes to develop theirstrategy on a scientific base. Based on the grey system theory we predict that the record of worldtriple jump will finally approach 20.65m. The distance of hop, step, and jump will approach 7.56m,6.06m, and 7.03m respectively. The apportionment will approach 36.6% for hop. 29.4% for step, and34.00% for jump. According to our calculation the tendency of development is to follow the model ofthe Russian style basically, and at the same time to absorb the advantage of the Polish style to place agreater emphasis on the distance of the distance of the third phase.

关键词： grey theory extreme value triple jump

New Multiple Soliton Solutions of High-Dimensional Nonlinear Klein-Gordon Equation

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应用数学 1992年第4期 113-114页

作者： Lou Senyue Zhu Yaojing (physics department, Ningbo Normal college, Ningbo, 315211)

The generalized nonlinear K-G equation can be written as The well known sine-Gordon(F(φ)=sinφ),φ~4(F(φ)=1/2(φ~3—φ))are just the special *** the method proposed by Gibbon ***(***.A65(1978)380),we introduce the b... 详细信息

关键词： exp

“三个代表”重要思想是与马列主义毛泽东思想邓小平理论一脉相承的光辉结晶

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济宁师范专科学校学报 2004年第1期25卷 10-12页

作者：张宝琪济宁师专历史系山东济宁272025

“三个代表”重要思想反映了当代世界和中国发展对党和国家工作的新要求。“三个代表”的提出是与马列主义毛泽东思想邓小平理论一脉相承的光辉结晶 ,这都是在实践的基础上产生 ,有着共同的哲学基础 ,共同的与时俱进的理论品格 ,共同的... 详细信息

“三个代表”重要思想反映了当代世界和中国发展对党和国家工作的新要求。“三个代表”的提出是与马列主义毛泽东思想邓小平理论一脉相承的光辉结晶 ,这都是在实践的基础上产生 ,有着共同的哲学基础 ,共同的与时俱进的理论品格 ,共同的政治立场 ,共同的建党学说 ,而具有无限的生命力和美好前景。

关键词：三个代表马列主义毛泽东思想邓小平理论中国共产党与时俱进政治立场建党学说哲学理论基础

Analysis of the negative-parity yrast band in ^(155)Tb

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Nuclear Science and Techniques 2000年第1期11卷 55-59页

作者： WU Xing-Ju XU Jin-Zhang CHEN Xing-Qu (Center of Theoretical Nuclear physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 physics department,Lu-an Teacher’s college,Lu-an, Anhui 237012 department of Modern physics, Lanzhou University, 六安师范专科学校重离子加速器国家实验室安徽六安 237012 兰州大学现代物理系重离子加速器国家实验室甘肃兰州 730000

Using the particle-rotor model, the energy spectrum and the B（MI）/B（E2） ratio of the negative-parity yrast band in 155Tb are investigated and compared with the experimental data before and after the band-crossing. It is noted that before and after the band-crossing the moment of inertia of the core is a smooth function of the total angular momentum I and can be described by the ah formula. The yrast band of 155Tb with negative parity may be triaxially deformed （γ=-13°） before and an axially symmetric shape （γ=0°） after the band-crossing.

关键词：铽155 原子核高自旋态结构性质负跃迁晕转态核子