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Search Results: 1 - 10 of 558079 matches for " 李宁<br>WANG Zi-yu "
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镀锡层上钛-磷复合体系钝化膜的制备与表征
Preparation and Characterization of Titanate-Phosphate Passivation Film on Tinplate

王紫玉,王洺浩,黎德育,<br>WANG Zi-yu,WANG Ming-hao,LI De-yu,LI Ning
- , 2018, DOI: 10.13208/j.electrochem.170442
Abstract: 摘要 通过钛盐与磷酸盐体系复配的方法,在镀锡层表面得到了一种钛-磷复合体系钝化膜. 利用扫描电子显微镜(SEM)、X射线光电子能谱 (XPS)、盐雾试验、Tafel极化曲线和EIS交流阻抗谱测试等方法,研究了所得钝化膜的表面形貌、组成与耐蚀性能. 结果表明,得到的钝化膜层的主要组成成分为Ti3(PO4)4nH2O和TiO2,在镀锡层表面结晶细致并有封孔的作用,因此有很好的耐蚀性能
Characterization of Cold-active Raw Starch-digesting Glucoamylase from Isolated Strain RS01
低温生淀粉糖化酶菌株RS01分离及其酶学性质

SUN Zi-Yu,CHI Nai-Yu,WANG Yu,LI Bing,ZHANG Qing-Fang,<br>孙子羽,迟乃玉,王宇,,张庆芳
微生物学通报 , 2010,
Abstract: 自渤海湾海泥中分离得到一株产低温生淀粉糖化酶能力较强的菌株RS01, 经形态学、生理生化特性及16S rRNA分析将其鉴定为气单胞菌属。对该菌株产的低温生淀粉糖化酶酶学性质进行初步研究, 结果表明其最适酶反应温度为30°C, 酶的热稳定性比较差, 最适pH为5.4, 经TLC鉴定酶解产物中有葡萄糖, 表明该分离菌株具有产低温生淀粉糖化酶的能力。
First principles investigation of structural stability and electronic and optical properties of LiF and NaF under high pressure
高压下LiF和NaF的结构稳定性及其电子和光学性质的第一性原理研究

Li Hai-Ming,Wu Xiang,Li Jiong,Chen Dong-Liang,Chu Wang-Sheng,Wu Zi-Yu,<br>海铭,巫翔,,陈栋梁,储旺盛,吴自玉
物理学报 , 2007,
Abstract: First principles calculation of LiF and NaF (NaCl phase and CsCl phase) underhigh pressure was carried out with the full potential linearized augmented plane wave plus local orbital method. It was shown that NaCl-type LiF transforms to a CsCl-type phase at about 450 GPa. Calculations of the electronic properties of LiF at high pressure compared with the energy band structural information indicate that a non-structureal transition occurs at about 53GPa, in which the direct band structure transforms to an in-direct band structure. We also calculated the complex electronic dielectric function and the static dielectric constants of LiF as functions of pressure. The results obtained for LiF are also compared with siilar data of NaF system.
Polarization beam splitter for self-collimated beams in photonic crystals*
光子晶体自准直光束偏振分束器

Shen Xiao-Peng,Han Kui,Li Hai-Peng,Shen Yi-Feng,Wang Zi-Yu,<br>沈晓鹏,韩奎,海鹏,沈义峰,王子煜
物理学报 , 2008,
Abstract: 结合能带图和等频图分析,基于光子晶体自准直效应和光子带隙,设计了一种紧凑、高效的偏振分束器.时域有限差分法(FDTD)模拟表明,该设计可以在一个较大的频率范围f=0.268—0.278(c/a) 内实现TE模和TM模的高效(85%)、大角度(90°)分离.在光通讯波长λ=1.55 μm,该设计尺寸仅为9 μm×9 μm.这些特性使其在光通讯领域中具有重要的应用前景.
EXACT CONTINUUM MODEL FOR POLYACETYLENE
严格的聚乙炔连续模型

WU ZI-YU,WANG KE-LIN,<br>吴自玉,汪克林
物理学报 , 1986,
Abstract: On the basis of the continuum version of the SSH Hamiltonian, we obtain a set of equations for the electronic wave function, which reduces to the BdG equations in the TLM model with neglect of certain terms. The new set of equations has been solved rigorously and analytically with the solution reducing to SSH's simple kink function in the zeroth approximation.
Secure Scheme of BOSS in One Mobile Company
某省移动公司BOSS安全方案

WANG Chun-hong,LIU Zi-yu,<br>王春红,刘紫玉
计算机应用研究 , 2005,
Abstract: 通过对某省移动公司业务运营支撑系统(BOSS)的分析,提出了基于BOSS的安全方案,并对某省移动公司的BOSS安全技术体系的第一期部署进行了分析。
The application of algebraic reconstruction techniques in X-ray refraction contrast CT
代数迭代重建算法在折射衬度CT中的应用

Zhang Kai,Zhu Pei-Ping,Huang Wan-Xia,Yuan Qing-Xi,Liu Li,Yuan Bin,Wang Jun-Yue,Shu Hang,Chen Bo,Liu Yi-Jin,Li En-Rong,Liu Xiao-Song,Wu Zi-Yu,<br>张凯,朱佩平,黄万霞,袁清习,刘力,袁斌,王寯越,舒航,陈博,刘宜晋,恩荣,刘小松,吴自玉
物理学报 , 2008,
Abstract: X射线折射衬度CT是一种基于相位衬度的断层成像技术,特别适合对由轻元素组成的生物、医学样品进行成像,可以观察到常规吸收衬度CT无法观察到的软组织内部微细结构,是一种具有巨大发展潜力的新成像方法.迭代重建算法和解析重建算法是计算机断层成像技术中并行发展的两种算法,虽然已经提出了几种X射线折射衬度CT的解析重建算法,可是还未见X射线折射衬度CT迭代重建算法的报道.研究了代数迭代重建算法在X射线折射衬度CT中的应用,比较分析了不同的投影数据排列方式对于折射衬度CT重建图像的影响,并对实验数据进行了图像重建,获得了满意的CT图像.研究结果表明,在相位衬度CT中,迭代重建算法相对于解析重建算法而言,能减少投影次数,降低曝光剂量,减少对生物样品的辐射损伤,在生物样品成像和投影数据不完整的情况下具有明显的优势.
Dissociations of O2 molecules on ultrathin Pb(111) films: first-principles plane wave calculations

Hu Zi-Yu,Yang Yu,Sun Bo,Zhang Ping,Wang Wen-Chuan,Shao Xiao-Hong,<br>
中国物理 B , 2012,
Abstract: Using first-principles calculations, we systematically study the dissociations of O2 molecules on different ultrathin Pb(111) films. According to our previous work revealing the molecular adsorption precursor states for O2, we further explore why there are two nearly degenerate adsorption states on Pb(111) ultrathin films, but no precursor adsorption states existing at all on Mg(0001) and Al(111) surfaces. The reason is concluded to be the different surface electronic structures. For the O2 dissociation, we consider both the reaction channels from gas-like and molecularly adsorbed O2 molecules. We find that the energy barrier for O2 dissociation from the molecular adsorption precursor states is always smaller than that from O2 gas. The most energetically favorable dissociation process is found to be the same on different Pb(111) films, and the energy barriers are found to be influenced by the quantum size effects of Pb(111) films.
New Configuration of Ring Resonator in Photonic Crystal Based on Self-Collimation

SHEN Xiao-Peng,HAN Kui,YUAN Fang,LI Hai-Peng,WANG Zi-Yu,ZHONG Qi,<br>
中国物理快报 , 2008,
Abstract:
Similarity Search of Time Series with Moving Average Based Indexing
用基于移动均值的索引实现时间序列相似查询

LIN Zi-Yu,YANG Dong-Qing,WANG Teng-Jiao,<br>林子雨,杨冬青,王腾蛟
软件学报 , 2008,
Abstract: In this paper,a method called MABI(moving average based indexing)is proposed to effectively deal with the issue of c-search query in subsequence matching.Two important theorems,distance reduction theorem and DRR(distance reduction rate)relation theorem,are proposed here to be as the basis of MABI.DRR relation theorem has strong capability in"pruning"those unqualified candidate sequences so as to achieve of fast similarity search. Furthermore,by modifying BATON~* introduced by Jagadish,et al.,a multi-way balanced tree structure is introduced,to construct the index from time series,which significantly speeds up the similarity search.Extensive experiments over a stock exchange dataset show that MABI can achieve desirable performance.
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