细旦涤纶50/长绒棉30/丽赛20 7.3 tex高支纱的开发

介绍了细旦涤纶50/长绒棉30/丽赛20纤维的性能,及其混纺纱的生产加工工艺,针对生产中存在的问题,采取了有效的措施,生产的7.3 tex混纺纱线,满足了市场的要求。     

Investigation of texture effect on visual colour difference evaluation

The texture effect on visual colour difference evaluation was investigated in this study. Five colour centers were selected and textured colour pairs were generated using scanned textile woven fabrics and colour‐mapping technique. The textured and solid colour pairs were then displayed on a characterized cathode ray tube (CRT) monitor for colour difference evaluation. The colour difference values for the pairs with texture patterns are equal to 5.0 CIELAB units in lightness direction. The texture level was represented by the half‐width of histogram, which is called texture strength in this study. High correlation was found between texture strength and visual colour difference for textured colour pairs, which indicates that an increasing of 10 units of texture strength in luminance would cause a decreasing of 0.25 units visual difference for the five colour centers. The ratio of visual difference between textured and solid colour pairs also indicates a high parametric effect of texture. © 2005 Wiley Periodicals, Inc. Col Res Appl, 30, 341–347, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.     

柳钢100t转炉冶炼工艺优化实践

通过分析100t转炉冶炼工艺中存在的问题，对冶炼工艺进行优化，提高转炉过程控制能力和一倒炉命中率，结果表明：过程喷溅可降低至9％，冶炼终点命中率提高到63％ 以上。[第一段]     

进口VPSA制氧装置的流程特点及配置

详细介绍了进口的VPSA制氧装置的流程特点、工艺参数及主要设备的配置。实际运转证明 ,该制氧装置具有运行可靠、启动时间短、部分负荷性能优越、负荷转换速度快等优点 ,能满足金隆铜业有限公司的实际生产要求。     

三峡水电站坝后钢衬钢筋混凝土压力背管的非线性有限元分析

采用钢筋混凝土非线性有限元方法，对三峡水电站钢衬钢筋混凝压力管道结构进行了计算，求得了各种钢材配置下的荷载效应并进行了相应的分析。     

Influence of phosphorus element on direct laser sintering of multicomponent Cu-based metal powder

This article presents a detailed investigation on the influence of the phosphorus element upon the laser sintering of a multicomponent Cu-based metal powder system consisting of Cu, Cu-10Sn, and Cu-8.4P. Powder systems containing 0, 10, 15, and 20 wt pct CuP were sintered in atmosphere at room temperature using the following optimal processing parameters: laser power of 350 W, scan speed of 0.04 m/s, scan line spacing of 0.15 mm, and layer thickness of 0.25 mm. It was found that the relative density of the sintered sample with 15 wt pct CuP increased by 24,4 pct as compared with the sample without phosphorus addition. A further increase in the CuP content (≥20 wt pct), however, resulted in a poor densification with a serious delamination. The exact metallurgical roles of the phosphorus element in the laser sintering process were addressed as follows. First, the phosphorus could prevent the sintering system from oxidation by forming CuPO₃, thereby improving the wetting characteristics and the sintering kinetics. Second, the phosphorus could decrease the surface tension of molten materials, leading to a successive transition from highly discontinuous sintered tracks to fairly coherent ones with increasing the phosphorus content. Third, the phosphorus could lower the melt viscosity, thereby improving the microstructural homogeneity of the laser-sintered samples.     

利用ASP技术远程维护基于Web的光盘数据库

介绍了利用ASP技术对图书馆主页上的光盘数据库进行远程维护，给出整个实施过程的步骤及部分程序的源程序。     

国内外钻探用金刚石复合片性能的研究

主要介绍国内外金刚石复合片性能及采用四高复合片钻探硬岩的初试,为快速钻探提供一个新的途径.     

拉伸试验测量不确定度的研究

分析了拉伸试验中抗拉强度Rm的影响因素，对测量不确定度的主要分量进行量化，评定了Rm的相对测量不确定度，作为生产检验中评定测量不确定度的尝试，以便为用户提供钢材性能测量结果的不确定度。