注蒸汽热采稠油油藏数值模拟自适应网法计算软件的设计开发

注蒸汽热采稠油是一个带有相变的多孔介质中多相流动问题。利用自适应网格法动态追踪油藏中的温度和饱和度锋面,以大幅度提高计算速度。在对渗透率空间分布不均匀、油藏区域分布不同种类输运性质岩石、裂缝-孔隙双重介质、非规则边界及内部含有断层油藏等复杂地层注蒸汽热采稠油问题开展自适应网格法的研究基础上,自主开发了注蒸汽热采稠油油藏数值模拟自适应网格法计算软件。该软件具有较高的计算精度和稳定性,可满足科研生产需求。     

陶瓷／金属梯度热障涂层的制备及性能评价

为了评价陶瓷／金属梯度热障涂层的性能，设计了4种涂层方案和2种基体材料（1Cr18Ni9Ti和2Cr13）．利用单枪单送粉器成功地制备了线性梯度涂层．通过观察涂层的微观结构、测量涂层的抗热震性能和热残余应力来评价涂层的性能．利用扫描电镜对各种陶瓷涂层的微观结构进行了观察和分析，利用X射线能谱分析得到了陶瓷梯度涂层试样中的不同区域的衍射图．热震试验表明，梯度涂层比非梯度涂层具有更好的抗热震性能．采用钻孔法对不同涂层方案进行了残余应力的测量，结果表明，压应力出现在1Cr18Ni9Ti基体材料上，而拉应力出现在2Cr13基体材料上．     

微结构运动特性表征中的全场三维重建方法

微机电系统(MEMS)测试的主要目的是为工程开发中的设计和模拟过程提供数据反馈,其中一个重要方面就是MEMS器件运动特性的高速可视化。基于计算机控制的频闪干涉测试系统,文中提出了一种时间轴和空间轴双向解包裹的干涉条纹分析方法,实现了MEMS器件离面运动参数的精确测量,并与微结构平面结构图像模板相结合,可以进行MEMS器件全视场运动的分析,达到了纳米级分辨力。     

Synthesis of γ-Al2O3 nanoparticles by chemical precipitation method

Highly pure active γ-Al2O3 nanoparticles were synthesized from aluminum nitrate and ammonium carbonate with a little surfactant by chemical precipitation method. The factors affecting the synthesis process were studied. The properties of γ-Al2O3 nanoparticles were characterized by DTA, XRD, BET, TEM, laser granularity analysis and impurity content analysis. The results show that the amorphous precursor Al(OH)3 sols are produced by using 0.1 mol/L Al(NO3)3 ·9H2O and 0.16 mol/L (NH4)2CO3·H2O reaction solutions, according to the volume ratio 1.33, adding 0.024% (volume fraction) surfactant PEG600, and reacting at 40 ℃, 1 000 r/min stirring rate for 15 min. Then, after stabilizing for 24 h, the precursors were extracted and filtrated by vacuum, washed thoroughly with deionized water and dehydrated ethanol, dried in vacuum at 80 ℃ for 8 h, final calcined at 800 ℃ for 1 h in the air, and high purity active γ-Al2O3 nanoparticles can be prepared with cubic in crystal system, O7H-FD3M in space group, about 9 nm in crystal grain size, about 20 nm in particle size and uniform size distribution, 131.35 m2/g in BET specific surface area, 7-11 nm in pore diameter, and not lower than 99.93% in purity.     

Preparation and characterization of Ni/Co bimetallic nano-clusters

Ni/Co bimetallic nano-cluters have been prepared from the aqueous solution by reducing their corresponding metal salts under suitable conditions. The experimental conditions including the type and concentration of protective agent, feeding order and the pH of the solution that influence the average particle size have been studied in detail. Transmission electron microscopy (TEM) indicates that the shape of those bimetallic nano-cluster particles is spheroid. The alloy structure has been shown by X-ray powder diffraction (XRD). The X-ray photoelectron spectroscopic (XPS) data have confirmed that the nickel and cobalt in the bimetallic nano-clusters are in the zero-valence state.     

Masking model for accurate colorimetric characterization of LCD

Abstract— A color management system (CMS) such as ICC profile or sRGB space have been proposed for color transformation and reproduction of cross media. In such a CMS, accurate colorimetric characterization of a display device plays a critical role in achieving device‐independent color reproduction. In the case of a CRT, colorimetric characterization based on a GOG model is accurate enough for this purpose. However, there is no effective counterpart in liquid‐crystal displays (LCDs) since the characterization of an LCD has many difficulties, such as channel interaction and non‐constancy of channel chromaticity. In this paper, a new method of display characterization is proposed which is applicable to the assessment of color reproduction of LCDs. The proposed method characterizes an electro‐optical transfer function considering both channel interaction and non‐constancy of channel chromaticity. Experimental results show that the proposed method is very effective in the colorimetry of LCDs.     

舌体歪斜的自动分析

舌形态的客观分析是中医客观化、现代化的组成部分。舌体歪斜与肌体脏腑器官病理程度相关。该文提出一种新的确定对称中轴线的方法,并结合嘴角定位,实现了舌体歪斜的自动定量分析。实验结果表明了该方法的有效性。     

吐哈盆地中侏罗统储层成岩作用及其油气勘探意义

应用岩石溥片、铸体薄片、ｘ衍射和扫描电镜等分析资料，着重探讨吐哈盆地中侏罗统储层成岩作用及其孔隙演化，研究表明：压实作用强烈是造成储层为低孔渗性的基本原因，胶结作用受渗滤－扩散机理和热驱对流机理控制，并可形成一种成岩圈闭。     

二连盆地阿南凹陷辫状河三角洲砾岩储集层微相模式及含油性

通过对二连盆地阿南凹陷大量岩性剖面、测井曲线、岩石学特征、储集性能、沉积构造和沉积韵律分析,认为阿南凹陷下自垩统阿尔善组第三段砾岩,是一次大的事件性沉积和近物源、粗碎屑.低成分成熟度和低结构成熟度的多源复成分砾岩.首次提出阿三段砾岩属大型辫状河三角洲相,具有三角洲所具备的三角洲平原、三角洲前缘和前三角洲的三层结构,存在以牵引流为主的沉积构造和正韵律为主的剖面特征.最终细分出水下河道等十个微相,恢复了阿三段的岩相古地理环境,建立了相模式.指出,砾岩的储集空间为原生砾间孔、砾间洞、粒间缝、次生溶蚀孔和构造缝.砾岩的储集性能、含油性好坏和油藏展布受沉积微相、砾石支撑方式和构造缝发育程度的严格控制.     

Reflection and Absorption Techniques for Optical Characterization of Chemically Assembled Nanomaterials

This review discusses recent developments in the areas of fabrication, certain types of optical characterization, and applications of a selected class of chemically assembled nanomaterials, namely i) gold and silver nanoparticles deposited onto optically transparent glass substrates; ii) thiol‐functionalized self‐assembled monolayers (SAMs); iii) chemically stabilized gold and silver nanoparticles (monolayer protected clusters, MPCs); and iv) MPCs linked to metallic substrates and adsorbates. Six linear optical techniques for the characterization of these materials are discussed: transmission localized surface plasmon resonance spectroscopy, T‐LSPR; propagating surface plasmon resonance spectroscopy, P‐SPR; polarization‐selective Fourier transform infrared reflection absorption spectroscopy, PS‐FTIRRAS; polarization‐modulation Fourier transform infrared reflection absorption spectroscopy, PM‐FTIRRAS; surface‐enhanced infrared reflection absorption spectroscopy, SEIRRAS; and infrared ellipsometry. The review focuses particularly on providing a unified treatment of these six optical techniques by using a relatively simple stratified multilayer model.