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Влияние модификации шпона эластомерами на конструкционную надежность клеевых соединений

Т С Агеева、Ю Б Левинский2013-01-01Современные проблемы науки и образования

An important task is to improve the structural reliability of construction plywood. Long-term stability of the construction materials and facilities, security facilities and production efficiency depend on this task. In construction, first of all it is necessary to provide structural strength of products in a real exp…

Material Properties and Applications

Спектроскопические и генерационные характеристики кристаллов NaLaGd двойных вольфраматов и молибдатов, активированных ионами Nd 3+, Tm 3+

П. А. Рябочкина、Svetlana A. Antoshkina、Ф. А. Больщиков 等 8 位作者2013-01-01Ученые записки Казанского университета. Серия Физико-математические науки

NaLaGd двойных вольфраматов (молибдатов) со структурой шеелита, активированных ионами Tm 3+.In this paper, we report the results of the study of the spectroscopic properties of NaLa 1/2Gd 1/2(WO 4) 2:Nd crystals and Tm 3+-doped mixed NaLaGd double tungstates (molybdates) with scheelite structure. We analyzed the low-t…

Solid State Laser TechnologiesLuminescence Properties of Advanced MaterialsSolid-state spectroscopy and crystallography

Study on Technique of Nanostructured Surface of Medical Titanium Prepared by Anodic Oxidation

Hongqin Zhu、Qian Shi、Weijie Lv2013-01-01OpenAlex

An anodic oxidation approach for preparation of nanostructured titanium surface was developed by orthogo- nal design. The effects of the concentration of electrolyte, the working voltage and the duration for anodic oxidation on the hydrophobic property and the corrosion resistance of biomedical titanium surface have b…

Electrospun Nanofibers in Biomedical ApplicationsTitanium Alloys Microstructure and PropertiesBone Tissue Engineering Materials

4-(2,2-二苯基乙烯基)-N,N-二(4-甲苯基)苯胺的合成工艺优化及光电性能

韩丽颖、李祥高、王世荣 等 4 位作者2013-01-01精细化工

该文以二苯基溴甲烷和4-[N,N-二(4一-苯基)]氨基苯甲醛经Wittig—Horner反应合成了4.(2,2-二苯基乙烯基)-N,N-二(4-甲苯基)苯胺。考察了原料配比、反应温度及反应时间对收率的影响,得到优化的工艺条件为:n(亚磷酸三乙酯):n(二苯基溴甲烷):n(4-[N,N-二(4-甲苯基)]氨基苯甲醛):n(叔丁醇钾)=5:1:0.7:1.2,反应温度15℃,反应时间4h,在该条件下收率为97.94%。在优化工艺条件下进行了10倍放大合成,产物平均收率96.79%。采用。HNMR、MS及FTIR对化合物结构进行了表征,根据c—V曲线法得到了化合物的HOMO和LUMO能级,并以该化合物作为空穴传输材料制备激光有机光电导…

Synthesis of heterocyclic compoundsSynthesis and properties of polymersPhosphorus compounds and reactions

Ab initio study of structural and electronic properties of Cu[sub n]@C[sub 60]

Shobhna Dhiman、Ranjan Kumar、Keya Dharamvir2013-01-01AIP conference proceedings

Ab initio investigation of structural and electronic properties of copper doped endohedral fullerene has been performed using numerical atomic orbital density functional theory. We have obtained the ground state structures for Cun@C60 (n=1-10). Which shows that C60 molecule can accommodate maximum of nine copper atoms…

Chemical and Physical Properties of MaterialsFullerene Chemistry and ApplicationsGraphene research and applications

Chapter 3. Reactive intermediates with large amplitude degrees of freedom

Rex T. Skodje2013-01-01Chemical modelling

Theoretical methods to treat reactive intermediates with large amplitude degrees of freedom are reviewed. For problems where individual reactive resonance states are isolated, so that the independent narrow resonance approximation is valid, techniques from quantum scattering theory and molecular spectroscopy are advoc…

Spectroscopy and Quantum Chemical StudiesAdvanced Chemical Physics StudiesPorphyrin and Phthalocyanine Chemistry

1,3-间苯咪唑及间苯二甲酸根-维镍(II)配位聚合物的合成、晶体结构及性质

张春丽、覃玲2013-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

以间苯咪唑(1,3-bib)和间苯二甲酸(H:MPA)为配体,采用水热法合成了1个一维镍(II)配位聚合物[Ni(1,3-bib)(MPA)·2H2O]n(1)。并对该配位聚合物进行了元素分析、红外光谱、固体紫外、热重(TGA)和x-射线粉末衍射(PXRD)等表征,并用x-射线单晶衍射法测定了它的单晶结构。该配位聚合物属于正交晶系,Pnma空间群,为一维结构。室温下固体紫外测试结果显示,配位聚合物具有强的紫外吸收。

Layered Double Hydroxides Synthesis and ApplicationsMetal-Organic Frameworks: Synthesis and ApplicationsPorphyrin and Phthalocyanine Chemistry

两种活性炭对2,3,5-三甲基吡嗪吸附性能研究

何靓、卢真保、Huang Yan 等 5 位作者2013-01-01食品工业

为考察SY-1活性炭与椰壳活性炭对香料的吸附性能,对两种活性碳的结构进行了表征,并分析了其对2,3,5-三甲基吡嗪的附动力学。结果表明,SY-1活性炭与椰壳活性炭均属于以微孔材料,对2,3,5-三甲基吡嗪吸附过程,即符合Langmuir等温方程又符合Freundlich等温方程,整个吸附过程是一个由快吸附和慢吸附构成的双速过程:两种活性炭的RL值均处于0〈RL〈1,且n值均处于1〈n〈10,易于吸附水中的2,3,5-三甲基吡嗪,相应的饱和吸附量分别为0.353g/g、0.264g/g,其eesv-1饱和吸附量较大,吸附效果明显。研究成果可在卷烟滤嘴中推广应用。

Corrosion Behavior and InhibitionAdsorption and biosorption for pollutant removalSurface Modification and Superhydrophobicity

纳米复合材料H6P2W18O62/TiO2-ZrO2(P123)的制备与微波辅助光催化降解甲基橙

Li Li、王瑞卿、于岩 等 5 位作者2013-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

在模板剂(C3H6O.C2H4O)x(P123)的作用下,采用溶胶-凝胶-程序升温溶剂热一步法制备了纳米复合材料H6P2W18O62/TiO2-ZrO2(P123)。通过傅里叶-红外光谱(FT-IR)、紫外-可见漫反射(UV-Vis/DRS)、X-射线衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜配合X-射线能量色散谱仪(SEM-EDS)和N2吸附-脱附等测试手段对其组成、结构和表面物理化学性质等进行了表征。结果表明,所合成的纳米复合材料H6P2W18O62/TiO2-ZrO2(P123)中多酸结构保持比较完整,复合材料具有锐钛矿晶型结构,属于介孔材料,模板剂P123使合成产物分布更加均匀。选取甲基橙(MO)作为模型分子…

Polyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation ReactionsPigment Synthesis and Properties

SIMULATION OF DROPS MOTION IN CHANNELS USING FAST MULTIPOLE METHOD /GRAPHICS PROCESSORS ACCELERATED BOUNDARY ELEMENT METHOD

Olga Abramova、Yulia A. Pityuk、Nail A. Gumerov 等 4 位作者2013-01-01Visualization of Mechanical Processes An International Online Journal

Modeling of motion of two-phase liquids in microchannels of different shapes is needed for a variety of industrial applications, such as enhanced oil recovery, advanced material processing, and biotechnology. In the present study a three-dimensional flow of a mixture of two Newtonian liquids of a droplet structure in…

Textile materials and evaluations

First Cell Staining Attempts For The Definition Of A Procedural Protocol For The Benthic Microalga Chrysophaeum Taylorii Lewis & Bryan (Pelagophyceae)

Annamarija Grava、Sarah Caronni、A. Ghiani 等 5 位作者2013-01-01BOA (University of Milano-Bicocca)

Abstract - In order to identify a suitable staining protocol to investigate the main cell morpho-functional characteristics and the life cycle of the benthic marine microalga Chrysophaeum taylorii Lewis & Bryan (Pelagophyceae) by using flow cytometric (FCM), different cell fixing methods were tested in laboratory.

Marine Biology and Ecology ResearchDiatoms and Algae ResearchAlgal biology and biofuel production

助熔剂对Ca_0.98Bi_2Ta_2O_9:0.02Pr^3+发光性能的影响

吴莘、崔瑞瑞、李绪诚 等 5 位作者2013-01-01中国稀土学报

采用传统高温固相反应法制备了Pr3+离子掺杂的铋层结构铁电氧化物Ca0.98Pr0.02 Bi2Ta2O9(CBTO:Pr3+)荧光粉。利用X射线衍射、荧光光谱等研究了分别添加四种不同助熔剂(H3BO3,NH4F,CaCl2或CaF2)对CBTO:Pr3=粉体的晶体结构、发光强度的影响。结果表明,与未加助熔剂的样品相比,H3B03,NH4F,CaCl2或CaF2的添加量为5%(摩尔分数)时,CBTO:Pr3+的发光强度分别提高了63%,43%,43%和29%;助熔剂的添加量为10%时,发光强度分别提高了186%,10%,13%和31%。随着H3803添加量的增加,CBTO:Pr3+的发光强度先增强后降低,在添加量为10%时,发光强…

Industrial Gas Emission ControlCatalytic Processes in Materials ScienceEnvironmental Policies and Emissions

温度对LiCl和LiNO_3/N,N-二甲基甲酰胺溶液结构的影响

张元志、吴晓静、王 暁燕 等 5 位作者2013-01-01分子科学学报:中英文版

研究了N,N-二甲基甲酰胺(DMF)纯溶剂、不同浓度LiCl/DMF和LiNO3/DMF溶液的红外光谱,得到随着温度升高,发生溶剂化作用的DMF分子比例不断降低,阴阳离子对构型比例逐渐增加的规律.采用密度泛函理论计算验证了红外谱图随温度升高变化的实质,得出溶液中存在的团簇构型主要为阴阳离子对构型(LiCI(DMF)。和LiNO3(DMF)n),阳离子构型ELi(DMF)n]+和阴离子构型(FCI(DMF)n]-,[NO3(DMF)n]-)的结论.

Radioactive element chemistry and processingLanthanide and Transition Metal ComplexesInorganic Fluorides and Related Compounds

Avalanche-enhanced photocurrents in pin silicon waveguides at 1550 nm wavelength

Zhao Yong、徐超、江晓清 等 4 位作者2013-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

The photocurrent effect in pin silicon waveguides at 1550 nm wavelength is experimentally investigated. The photocurrent is mainly attributed to surface-state absorption,defect-state absorption and/or two-photon absorption.Experimental results show that the photocurrent is enhanced by the avalanche effect.A pin silico…

Photorefractive and Nonlinear OpticsPhotonic and Optical DevicesSilicon Nanostructures and Photoluminescence

二茂铁功能化石墨烯氧化物的制备、表征及对高氯酸铵热分解的催化性能(英文)

周磊、王立、俞豪杰 等 6 位作者2013-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

本文通过一种新的合成路线合成了二茂铁功能化的氧化石墨烯(GO-EDA-Fc)。利用傅里叶变换红外光谱和扫描电子显微镜对其结构和形貌进行了表征。通过热重分析(TGA)研究了其对高氯酸铵(AP)热分解的催化性能,结果表明,氧化石墨烯和二茂铁表现出很好的协同催化效果,对AP热分解具有高的催化活性。催化效果随着GO-EDA-Fc加入量的增加而增强,当加入4wt%的GO-EDA-Fc时,AP的高温分解峰的峰值温度下降了60℃,低温分解峰的峰值也有降低。文中还对催化机制进行了研究。

Thermal and Kinetic AnalysisChemical Synthesis and ReactionsCarbon dioxide utilization in catalysis

Ti4+掺杂对Li2FeSiO4/C电化学性能的影响

鲁道荣、刘兴亮、桂宏亮2013-01-01金属功能材料

用溶胶-凝胶法制备Ti4+掺杂的Li2FeSiO4/C正极材料。用XRD、HRTEM和电化学方法研究了该材料的结构、形貌和电化学性能。结果表明,掺杂适量的Ti4+不会改变Li2FeSiO4/C的正交晶系结构,可以稳定材料的结构,改善高倍率充放电性能。在室温下,Li2Fe0.97Ti0.03SiO4/C以0.1c倍率放电的首次放电比容量为149.1mA·h/g,20次循环后放电比容量为127.3mA·h/g,且不同倍率下的电化学性能明显优于未掺杂的Li2FeSiO4/C。交流阻抗谱研究表明,适量的Ti4+掺杂,减小了正极材料在充放电过程中的电荷传递电阻,增加了材料的电子电导率,改善了材料的电化学性能。

Graphene research and applicationsAdvancements in Battery MaterialsSemiconductor materials and interfaces

业界首家:二极管SiC-MOS模块发布

赵佶2013-01-01半导体信息

特点:1)MOS单体即可保持开关特性不变。无尾电流,开关损耗更低即使去掉sbd亦可实现与以往产品同等的开关特性。由于不会产生Si-IGBT中常见的尾电流,损耗可降低50%以上,有助于设备更加节能。另外,达到了Si-IGBT无法达到的50 khz以上的开关频率,因此,还可实现外围设备的小型化、

Silicon Carbide Semiconductor TechnologiesGa2O3 and related materialsSilicon Nanostructures and Photoluminescence

基于2,2-联吡啶3,3-二甲酸和邻菲咯啉的稀土配合物的合成、结构和性质

钟琴娣、辛林2013-01-01福建师范大学学报:自然科学版

以LnCl3、H2bpdc(2,2-联吡啶3,3-二甲酸)和phen(邻菲咯啉)为原料,在水热条件下合成了一系列稀土配合物[Ln(bpdc)1.5(phen)(H2O)]xH2O(Ln=La(1),Sm(3)和Dy(5),x=0;Ln=Pr(2)和Gd(4),x=0.15),并通过单晶X-射线衍射分析法测定了它们的晶体结构.此外,对配合物3和5的荧光性质和配合物2和4的磁性质进行了研究.结果表明,配合物3和5在室温下均表现出相应稀土离子的特征荧光发射,在配合物2和4的稀土离子间均存在反铁磁相互作用.

Lanthanide and Transition Metal ComplexesMagnetism in coordination complexesMetal-Organic Frameworks: Synthesis and Applications

光学浮区法生长Bi2Sr(Ca)2CO2Oy晶体及电输运性质研究

孙宁、董松涛、姚淑华2013-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

采用光学浮区法生长了层状过渡金属氧化物Bi2Sr2-xCaxCo2Oy(x=0,2)晶体。通过XRD,SEM和TEM结构表征,表明了生长的晶体为层状晶体,并确定了晶体生长的方向垂直与C轴。研究了晶体的热电性能,包括Bi2Ca2Co2Oy和Bi2Sr2Co2Oy晶体。6面的Seeback系数和电阻率,表明了Bi2Ca2Co2Oy具有较好的热电势和电导,并分析了电输运性能与晶体失配结构的关系。

Copper-based nanomaterials and applicationsMetallurgical and Alloy ProcessesAdvanced Thermoelectric Materials and Devices

Efecto del soporte sobre las propiedades texturales y catalíticas de catalizadores de Pd soportado

Annie Bastos、Dora Finol、Jonathan Méndez 等 6 位作者2013-01-01OpenAlex

Pd catalysts supported on SiO2, CeO2, CeO2/SiO2 and Ce0,7Zr0,3OX/SiO2 were prepared with Pd content between 0.1-1%p/p, using the incipient wetness impregnation technique and PdCl 2 y Pd(NO 3 ) 2 as precursors. The catalysts were characterized by X-ray fluorescence (XRF), surface area, X-ray diffraction (XRD), Temperat…

Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisElectrocatalysts for Energy Conversion