材料期刊网

Wear and Corrosion Resistance of Electroless Plating Ni-P Coating on P110 Steel

LIN Naiming , ZHOU Peng , ZOU Jiaojuan , XIE Faqin , TANG Bin

武汉理工大学学报-材料科学版(英文版) doi:10.1007/s11595-015-1200-z

关键词:

Antibacterial Property of Cu Modified Stainless Steel by Plasma Surface Alloying

ZHANG Xiang-yu , HUANG Xiao-bo , JIANG Li , MA Yong , FAN Ai-lan , TANG Bin

钢铁研究学报(英文版)

Abstract： Stainless steel (SS) is not recommended to be used in hospital environments for work surfaces and door furniture due to the lack of antibacterial properties. To this end, a novel SS surface modified layer with both a quick bacterial killing rate and relatively thick has been obtained by pl...

关键词: Key words: plasma alloying , Cu , antimicrobial , AISI 304 stainless steel

Microstructure and Wear Resistance of N-Doped TiO2 Coatings Grown on Stainless Steel by Plasma Surface Alloying Technology

WANG He-feng , TANG Bin , LI Xiu-yan

钢铁研究学报(英文版)

N-doped TiO2 (N-TiO2) coatings were obtained by oxidation of titanium nitride coatings, which were prepared by the plasma surface alloying technique on stainless steel (SS). The microstructure of N-TiO2 coatings was characterized by X-ray diffraction (XRD), glow discharge optical emission spectromet...

关键词: plasma surface alloying technique , wear resistance , stainless steel , titanium dioxide

Molecular dynamics studies on vacancy-interstitial annihilation in silicon

Acta Physica Sinica

Molecular dynamics (MD) simulation is performed to study the vacancy-interstitial annihilation in crystalline silicon. We choose the Stillinger-Weber potential, which is commonly used for silicon, to describe the interaction between atoms. The system is relaxed under 300K and 1400K respectively. We ...

关键词: molecular dynamics;vacancy and interstitial;diffusion;point-defects;diffusion;mechanisms

ELECTRONIC-PROPERTIES OF ONE-DIMENSIONAL QUASI-LATTICES

Zeitschrift Fur Physik B-Condensed Matter

we study the on-site model of a new class of one-dimensional quasiperiodic lattices, for which the substitution rules are B --> BA, and A --> BAB. By means of the renormalization-group approach, a interesting multifractal spectral behavior has been found, which has been confirmed by numerical ...

关键词: energy-spectrum;quasiperiodic lattices;localization problem;trace;maps;fibonacci;quasicrystal;systems;tilings

BiNbO_4纳米棒的制备及光催化性能研究

赵洁 , 姚秉华 , 冯逸晨

功能材料

采用共沉淀法制备BiNbO4纳米棒。利用X射线粉末衍射仪（XRD）、透射电镜（TEM）、紫外-可见漫反射光谱（UV-Vis DRS）和热重分析（TG/DTA）对其结构、形貌和性质进行表征,并通过紫外-可见分光光度计分析BiNbO4纳米棒光降解罗丹明B来研究其光催化活性。结果表明以五氧化二铌和五水硝酸...

关键词: 共沉淀法 , BiNbO4纳米棒 , 光催化

基于稀疏随机投影的SIFT医学图像配准算法

杨飒 , 郑志硕

量子电子学报 doi:10.3969/j.issn.1007-5461.2015.03.005

针对尺度不变特征变换(Scale-invariant feature transform,SIFT)算法在关键点特征描述向量阶段计算复杂并且维数较高的现象,提出了一种基于压缩感知理论的SIFT算法.通过压缩感知理论的稀疏特征表示方法,对SIFT关键点特征向量进行提取,将高维梯度导数向量降到低维稀疏特...

关键词: 图像处理 , 图像配准 , 尺度不变特征变换 , 特征提取 , 稀疏随机投影

DTPA及其衍生物与乳酸脱氢酶的酶学研究及光谱测定

李伟国 , 祁超 , 刘立岩 , 赵大庆

应用化学 doi:10.3969/j.issn.1000-0518.2005.11.003

分别研究了二乙三胺五乙酸(DTPA)及2种衍生物二乙三胺五乙酸-双二甲酰胺(DTPA-BDMA)和二乙三胺五乙酸-双(异烟肼)(DTPA-BIN)对乳酸脱氢酶活性及酶促反应动力学的影响.结果表明,它们均可以抑制脱氢酶的活性,其抑制类型为竞...

关键词: 二乙三胺五乙酸 , 乳酸脱氢酶 , 酶学动力学 , 紫外差谱 , 荧光光谱

铜催化炔丙醇酯与β-羰基膦酸酯的不对称[3+2]环加成反应合成手性膦酰化2,3-二氢呋喃

陈修帅 , 侯传金 , 李晴 , 刘彦军 , 杨瑞丰 , 胡向平

催化学报 doi:10.1016/S1872-2067(16)62488-9

手性2,3-二氢呋喃衍生物是一类重要的杂环化合物,广泛存在于天然产物和生物活性分子中.它们也经常被用于手性四氢呋喃化合物的不对称合成.因此,人们发展了很多合成手性2,3-二氢呋喃化合物的方法,如有机小分子催化的多米诺迈克尔-烷基化反应、“中断的”Feist-Bénary反应或改进的 Feist-Bé...

关键词: 铜 , 不对称合成 , 3+2环加成 , β-羰基膦酸酯 , 膦酰化 2,3-二氢呋喃