检索结果-南通市图书馆

Impulse-Coupling Coefficient of Laser-Surface Interaction in Air

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1994年第4期11卷 250-252页

作者： mei liangmo XIA Yueyuan WANG Qingpu XU Bingzhang TAN Chunyu ZHAO Shengzhi WANG Xiangtai WANG Gongtang Department of Physics Shandong UniversityJinan 250100 Department of Physics Shandong Normal UniversityJinan 250002

Impulse-copling coefficients,for A1 and Cu samples with finite surface area irradiated in air by 1.06μm,10ns laser pulses produced by a Nd:YAG laser,have been measured experimentally.A modified theoretical model of impulse-coupling is proposed,which significantly improves the agreement between the calculated impulse-coupling coefficient and the measured one.

关键词： Nd:YAG 1.06μm laser

STRUCTURE AND FERROMAGNETIC RESONANCE OF Fe/Cu SUPERLATTICES

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1991年第8期4卷 127-133页

作者： BI Siyun MA Xiaoding SONG Ruitian mei liangmo ZHAO Jiangao GUO Yicheng Shandong University,Jinan,China Shandong Univ Jinan China

Metallic Fe/Cu superlattice films on glass substrates were prepared by a dc-magnetion sputtering *** modulation behaviors and the crystal structures of the films were ex- amined by X-ray diffraction and transmission electron microscopy(TEM)respectively. Their magnetic properties were studied by means of ferromagnetic resonnance spectrometer and the vibrating sample *** results show that there exists a strong magnetic coupling between the neighbouring Fe layers and it is the coupling that affectes the magnetic properties of these superlattice films.

关键词： superlattice ferromagnetic resonance interface spin-wave resonance

Giant Magnetoresistance Effect in Melt Spun CoCu granular Alloys

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1994年第8期11卷 510-513页

作者： LI Min ZHAO Xuegen ZHAO Tongyun ZHAO Jiangao SHEN Baogen CHAI Weiping GU Yousong MAI Zhenhong mei liangmo Institute of Physics Academia SinicaBejjing 100080 Department of Physics Shandong UniversityJinan 250100

granular magnetic Co_(x)Cu_(1-x)(x=0.05-0.5)alloy ribbons were prepared by melt spinning method,and the structural,magnetotransport,magnetic properties and the effects of annealing on these properties were studied by x-ray diffraction,vibrating sample magnetometer,magnetoresistance measurement at room *** magnetoresistance was observed over a broad range of Co concentrations with a maximum magnetoresistance(MR)ratio of 7.8%(at x=0.20 and 500℃ annealing)under a magnetic field of *** MR ratio increases with the annealing temperature and reaches a maximum at about 500℃ and then *** dependence of MR and magnetization on magnetic field for various granule parameters were studied by controlling the nucleation and growth of Co granules.

关键词： resistance alloy annealing

REPLY BY LI Hua et al.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 1988年第9期5卷 431-432页

作者： Hua Li Shouting Jiang liangmo mei Yicheng Kuo Gueilin Yang You Xu Hongru Zhai

In this communication we would like to reply to the comment of *** Xiedi on our paper(1).

关键词： al. comment REP

Carbon nanotube integrated circuit technology:purification,assembly and integration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第3期6卷 120-138页

作者： Jianlei Cui Fengqi Wei Xuesong mei State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China

As the manufacturing process of silicon-based integrated circuits(ICs)approaches its physical limit,the quantum effect of silicon-based field-effect transistors(FETs)has become increasingly *** the burgeoning carbon-based semiconductor technology has become one of the most disruptive technologies in the post-Moore *** one-dimensional nanomaterials,carbon nanotubes(CNTs)are far superior to silicon at the same technology nodes of FETs because of their excellent electrical transport and scaling properties,rendering them the most competitive material in the next-generation ICs ***,certain challenges impede the industrialization of CNTs,particularly in terms of material preparation,which significantly hinders the development of CNT-based *** on CNT-based ICs technology,this review summarizes its main technical status,development trends,existing challenges,and future development directions.

关键词： carbon nanotubes integrated circuits field-effect transistors post-Moore

Oligomerization of drug transporters:Forms,functions,and mechanisms

在线全文

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2024年第5期14卷 1924-1938页

作者： Chunxu Ni mei Hong College of Life Sciences South China Agricultural UniversityGuangzhou 510642China Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms South China Agricultural UniversityGuangzhou 510642China

Drug transporters are essential players in the transmembrane transport of a wide variety of clinical *** broad substrate spectra and versatile distribution pattern of these membrane proteins infer their pharmacological and clinical *** our accumulating knowledge on the three-dimensional structure of drug transporters,their oligomerization status has become a topic of intense study due to the possible functional roles carried out by such kind of post-translational modification(PTM).In-depth studies of oligomeric complexes formed among drug transporters as well as their interactions with other regulatory proteins can help us better understand the regulatory mechanisms of these membrane proteins,provide clues for the development of novel drugs,and improve the therapeutic *** this review,we describe different oligomerization forms as well as their structural basis of major drug transporters in the ATP-binding cassette and solute carrier superfamilies,summarize our current knowledge on the influence of oligomerization for protein expression level and transport function of these membrane proteins,and discuss the regulatory mechanisms of ***,we highlight the challenges associated with the current oligomerization studies and propose some thoughts on the pharmaceutical application of this important drug transporter PTM.

关键词： Drug development Drug transporters Oligomerization Protein expression Protein–protein interaction Regulatory mechanism Structural basis Transport function

Characterizations of semihoops based on derivations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics(A Journal of Chinese Universities) 2024年第2期39卷 291-310页

作者： WANG mei ZHANG Xiao-hong School of Electrical and Control Engineering Shaanxi University of Science and TechnologyXi'an 710021China School of Arts and Sciences Shaanxi University of Science and TechnologyXi'an 710021China School of Mathematics and Statistics Weinan Normal UniversityWeinan 714099China

In this paper,we discuss the related properties of some particular derivations in semihoops and give some characterizations of ***,we prove that every Heyting algebra is isomorphic to the algebra of all multiplicative derivations and show that every Boolean algebra is isomorphic to the algebra of all implicative ***,we show that the sets of multiplicative and implicative derivations on bounded regular idempotent semihoops are in oneto-one correspondence.

关键词： (prelinear)semihoop derivation Heyting algebra Galois connection

Compensation temperatures and hysteresis behaviors of a graphene-like trilayer

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2024年第5期76卷 166-179页

作者： Ying An Ji Liang Wei Wang mei-mei Du Feng-ge Zhang School of Science Shenyang University of TechnologyShenyang 110870China School of Electrical Engineering Shenyang University of TechnologyShenyang 110870China

This work focuses on the ground-state phase diagram,the compensation temperatures and the critical behaviors of a ferrimagnetic graphene-like trilayer induced by crystal fields and exchange *** simulation results show that a negative decrease in crystal field or an increase in exchange coupling can increase the critical *** importantly,an M curve with double compensation temperatures can be observed,which is not predicted by the Neel *** remarkable compensation phenomenon has potential application value in the field of magnetic recording.

关键词： graphene-like trilayer mixed-spin Ising model magnetization double compensation temperatures triple-loop hysteresis monte Carlo

在线全文

学校读者我要写书评

暂无评论

低维材料中的缺陷效应与电子态调控

科学通报 2021年第16期66卷 1998-2009页

作者：赵明文夏曰源梅良模山东大学物理学院济南250100

低维材料具有大的比表面积、独特的电子结构和优异性能,在新能源、信息等领域具有重要的应用前景.低维材料所具有的特殊电子态可以突破传统半导体材料的尺寸极限,是后摩尔时代重要的候选材料.如何有效地调控低维材料电子结构以满足特定... 详细信息

低维材料具有大的比表面积、独特的电子结构和优异性能,在新能源、信息等领域具有重要的应用前景.低维材料所具有的特殊电子态可以突破传统半导体材料的尺寸极限,是后摩尔时代重要的候选材料.如何有效地调控低维材料电子结构以满足特定功能的需要是实现这一应用的关键.本文从一维纳米管和二维层状材料中的"缺陷效应"出发,对我们课题组在低维材料电子结构调控方面的研究结果进行综述,揭示空位和吸附原子等点缺陷以及表面修饰和内部填充等对材料的电子结构、电子自旋极化和激发态特性的调控机制与规律,为低维材料在新型电子器件等领域的应用提供依据.

关键词：纳米管二维材料缺陷效应电子态调控第一性原理计算