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输出间距对嵌入式复合纺纱线结构和性能的影响

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上海纺织科技 2009年第10期37卷 1-6页

作者：陈军徐巧林叶汶祥徐卫林武汉科技学院新型纺织材料绿色加工及其功能化教育部重点实验室湖北武汉430073

分析了嵌入式复合纺纺纱过程中"V"形加捻三角区的动态变化及长丝与长丝间距、粗纱须条与长丝间距对"V"形加捻三角区形状和单纱受力的影响,认为各种间距变化会使"V"形加捻三角区夹角、单纱段长度产生变化,并以此为依据,使其他工艺参数不... 详细信息

分析了嵌入式复合纺纺纱过程中"V"形加捻三角区的动态变化及长丝与长丝间距、粗纱须条与长丝间距对"V"形加捻三角区形状和单纱受力的影响,认为各种间距变化会使"V"形加捻三角区夹角、单纱段长度产生变化,并以此为依据,使其他工艺参数不变,分别改变长丝与长丝间距、粗纱与长丝间距及纱纺中心点偏移进行纺纱,通过理论分析和实验比较,讨论了各种间距对成纱结构性能的影响。结果表明,随着各种间距变化,成纱毛羽、强伸性与条干均呈非单调性变化。综合考虑成纱结构和性能,在其他参数相同时,最佳成纱工艺为:长丝与长丝间距12 mm,粗纱与长丝间距4 mm,Z捻时纺纱中心点偏移距离-2 mm。

关键词：纺纱新型纺纱纱线性能影响间距嵌入式复合纺 “V”形加捻三角区

Pure Electric Bus Crashworthiness Analysis

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Pure Electric Bus Crashworthiness Analysis

Mechanical Engineering and material science—2012 International Conference on Mechanical Engineering and material science(MEMS 2012)

作者： Wen-wei Wang National Engineering laboratory for Electric Vehicles Beijing Institute of technology Beijing 100081 China Cheng-jun Zhou National Engineering laboratory for Electric Vehicles Beijing Institute of technology Beijing 100081 China Jiao-yang Chen National Engineering laboratory for Electric Vehicles Beijing Institute of technology Beijing 100081 China

This paper has analyzed the basic theory and material constitutive relation of crashworthiness *** finite element model for vehicle side crash has been built and the side crash simulation with an initial velocity of 50km/h has been *** the structure deformations analysis of each part,the side crash impacts on passenger living space and battery have been predicted and the crashworthiness of the pure electric bus body structure has been tested.

关键词： pure electric bus crashworthiness side crash

Discovery of double-peaking potassic volcanic rocks in Langshan Group of the Tanyaokou hydrothermal- sedimentary deposit, Inner Mongolia, and its indicating significance

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science China earth sciences 2005年第6期48卷 822-833页

作者： PENG Runmin1, ZHAI Yusheng1, WANG Zhigang2 & HAN Xuefeng2 1. Key laboratory of Lithospheric Tectonics and Lithoprobing technology, Ministry of Education, China university of Geo{3., Beijing 100083. China 2. Inner Mongolia Geological Prospecting Institute, Ministry of Chemical Industry, Hohhot 010074, China Correspondences should be addressed to Peng Runmin Key laboratory of Lithospheric Tectonics and Lithoprobing technology Ministry of Education China University of Geosciences Beijing China Inner Mongolia Geological Prospecting Institute Ministry of Chemical Industry Hohhot China

It is revealed that the protolith of gray-light brown potash-feldspar-leucogranulites and granulites in the 2nd formation of the LG in Tanyaokou deposit are quartz kerotophyre of synsedimentary eruption based on the following facts and features: (1) The rocks look compact and homogeneous without obvious crystals with naked eyes; (2) they contain blastoporphyritic or glomeroporphyritic and blasto-crystalloclastic crystals consisting of quartz with wavy extinction and albite with obvious alteration and deformation; (3. they also contain radiated and fibrous blasto-microspherulitic texture and swallow-tailed bifurcate and blasto-hollow-skeleton crystal texture, representing the rapid cooling characteristic of the magma during submarine volcanic eruption; (4) the major chemical compositions of the rocks are: SiO2 = 70.80%―76.00%, K2O (4.83.―6.22%)>Na2O(2.78%―3.80%), and K2O+Na2O = 8.63.―9.00%; and (5) their petro-chemical diagrams indicate that they are volcanic rocks. Together with the characteristic that they occur in the same sequence with potassic spilite (SiO2 = 46.12%―50.68%, K2O = 4.23.―5.93.>Na2O = 2.15%―3.14%, K2O+Na2O = 6.51%―8.08%), it can be confirmed that the vol-canics occurring in the 2nd Formation of the LG in Tanyaokou district are double-peaking potas-sic volcanic rocks. The discovery, together with the tuffs with ore minerals and the distribution of lead isotopic as well as the value of Co/Ni of pyrites >1 showing the obvious endogenic metali-zation, can prove that the Tanyaokou deposit is an untypical SEDEX-type deposit formed in the extension fault basin in the Mesoproterozonic aulacogen of the northern margin of the North China Platform, and its metallogenesis is related to the synsedimentary volcanic activities and the hydrothermal exhalation, and both the ore-forming material source and volcanics came from mantle or lower crust. These facts mentioned above, together with the meta-volcanic rocks (double-peaking) found in the Dongshengmiao and Huog

关键词： extensional rift basin, double-peaking potassic volcanic rocks, Mesoproterozoic, the 2nd formation of LG, Tanyaokou deposit, Inner Mongolia.

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GD阴极位敏探测器

核电子学与探测技术 1989年第1期9卷 23-25页

作者：杨本炜李向山赵玉山陈长生吉林大学材料研究所

本文叙述了GD阴极位敏探测器的设计和制作,得到的空间分辨率好于0.3.m,有效范围约3.mm,非线性约1％。

关键词：阴极位敏探器探测器位敏探测器

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柔性石墨复合材料的制备及性能研究

炭素技术 2001年第6期20卷 14-16页

作者：李常清韦永德北京化工大学炭纤维研究所北京大学地球与空间科学学院北京100871 哈尔滨工业大学

采用热压法制备出不同种类树脂—柔性石墨复合材料 ,研究了树脂种类与用量对复合材料的体积密度、肖氏硬度、电阻率、压缩率及回弹率等性能的影响 ;利用SEM分析了树脂含量对复合材料表面形貌的影响。结果发现 ,呋喃—柔性石墨复合材料... 详细信息

采用热压法制备出不同种类树脂—柔性石墨复合材料 ,研究了树脂种类与用量对复合材料的体积密度、肖氏硬度、电阻率、压缩率及回弹率等性能的影响 ;利用SEM分析了树脂含量对复合材料表面形貌的影响。结果发现 ,呋喃—柔性石墨复合材料的综合性能最佳。

关键词：柔性石墨复合材料制备性能呋喃树脂酚醛树脂环氧树脂

Magnetic entropy change in ErFe2

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Magnetic entropy change in ErFe2

全国磁热效应材料和磁制冷技术学术研讨会

作者： K.W.Zhou~(a,b),X.Y.Zhang~a,C.L.Wu~a,J.L Yan~a,J.Q.Li~b,Y.H.Zhuang~a a Key laboratory of Nonferrous Metal materials and New Processing technology,Guangxi {3.,Ministry of Education,Nanning,Guangxi,53.004,P.R..China b Department of materials science and Engineering,Shenzhen {3. and Shenzhen Key laboratory of Special Functional materials,Shenzhen,518060,P.R,.China

Recently,as a kind of magnetic refrigeration material,the compounds RM(R=rare earth,M= transition metal) crystallizing in C15 Laves phase structure have been paid much *** Curie temperature of ErFe is near room *** th...

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Love waves in piezoelectric layered structure with functionally graded material half space

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Love waves in piezoelectric layered structure with functiona...

2011年全国压电和声波理论及器件应用研讨会

作者： Xiao-Shan CAO~(1,*) Feng JIN~2 Xiao-Yi MO~1 Jun-Ping SHI~1 1 Department of Engineering Mechanics,Xi''an university of technology,Xi*an 710048 2 MOE Key laboratory for Strength and Vibration,Xi''an Jiaotong university,Xi''an 710049

＜正＞In this theoretical study,we investigate the propagation of Love waves in a piezoelectric layered *** substrate of the layered structure is a functionally graded material（FGM） in which parameters vary along th... 详细信息

关键词： Piezoelectric layered structure Functionally graded material(FGM) Love waves Surface acoustic wave(SAW) devices Electro-mechanical coupling factor

Experiment Study on Calcination -Digestion- Classification of Rare-earth Containing Phosphorus Ore

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Experiment Study on Calcination -Digestion- Classification o...

2004年国际稀土研究应用研讨会

作者： ZHANG Qin ZHANG Jie WANG Jing( Guizhou university Of technology Guiyang 550003.China)

＜正＞Rare-earth element becomes the key element to develop high and new technique industry due to the special electronic construction. It has extensive applied forture in information, biology, new material, new energy, space and ocean 6 new {3. clusters. Guizhou province owns very extensive rare-earth *** Xinhua phosphorus ore is enormous rare-earth phosphorus ore deposits,its content is millionton. How to develop Zhijin rare-earth resources economically and validly in Guizhou is an important lesson. It is important to promote the development of district economy , accelerate the development of rare-earth resources efficiently in Guizhou.

关键词： Rare-earth Phosphorus Ore Calcination -Digestion-De-Sliming Separation Zhijin In Guizhou

Preparation of Gd2O3.Eu3. downconversion luminescent material and its application in dye-sensitized solar cells

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science Bulletin 2011年第Z2期 3114-3118页

作者： LI QingBei, LIN JianMing * , WU JiHuai, LAN Zhang, WANG JiangLi, WANG Yue, PENG FuGuo, HUANG MiaoLiang & XIAO YaoMing Engineering Research Center of Environment-Friendly Functional materials of the Ministry of Education, the Key laboratory for Functional materials of Fujian Higher Education, Institute of material Physical Chemistry, Huaqiao university, Quanzhou 3.2021, China

GdO:Eudownconversion luminescent powder was prepared using the homogeneous precipitation method. Its optical properties were analyzed and it was introduced into a dye-sensitized solar cell (DSSC). As a luminescence medium, GdO:Euimproved light harvesting via conversion luminescence and increased the photocurrent of the DSSC. As a p-type dopant insulating rare earth oxides form an energy barrier, and the GdO:Euelevated the energy level of the oxide film and increased the photovoltage. The photoelectric conversion efficiency for a DSSC with GdO:Eudoping (6 : 100) reached 7.01%, which was 17.4% higher than the photoelectrical conversion efficiency of a DSSC without Gd 2 O 3.:Eu 3. doping.

关键词： dye-sensitized solar cell downconversion rare-earth oxide luminescent material p-type doping