用PSD检测长直导轨准直度

介绍了用光电位置传感器（ＰＳＤ）检测长直导轨的原理和方法。利用ＰＳＤ作为位置传感的检测系统能实时、连续地对被测件三维空间准直度进行检测，更好地解决了以往移动桥板分段测量、人工读数（数格）局部检测的方法存在的问题。     

激光对CCD器件破坏时几种阈值的测量

本文简要回顾了近十年来激光CVD(LCVD)技术的发展概况及其在金属、电介质和半导体薄膜生长方面的应用情况。阐明了这种新发展起来的成膜技术不仅因其生长的低温化能够给器件带来优良的电学特性,同时也可利用其高精度的膜厚控制特性获得新结构的材料和器件。作者还对该技术的广泛的应用前景予以展望和肯定。     

锌铝超塑性合金超塑压缩试验研究

对Ｚｎ－２２％Ａｌ超塑性合金进行了等温超塑压缩试验。在相同的温度、变形速率条件下，研究了不同的变形强度与流动应力及硬度，以及在相同的温度、变形程度条件下，不同的变形速率与流动应力等的关系。     

A Two-Stage Bayesian Integration Framework for Salient Object Detection on Light Field

Unique visual features of 4D light field data have been shown to affect detection of salient objects. Nevertheless, only a few studies explore it yet. In this study, several helpful visual features extracted from light field data are fused in a two-stage Bayesian integration framework for salient object detection. First, background weighted color contrast is computed in high dimensional color space, which is more distinctive to identify object of interest. Second, focusness map of foreground slice is estimated. Then, it is combined with the color contrast results via first-stage Bayesian fusion. Third, background weighted depth contrast is computed. Depth contrast has been proved to be an extremely useful cue for salient object detection and complementary to color contrast. Finally, in the second-stage Bayesian fusion step, the depth-induced contrast saliency is further fused with the first-stage saliency fusion results to get the final saliency map. Experiments of comparing with eight existing state-of-the-art methods on light field benchmark datasets show that the proposed method can handle challenging scenarios such as cluttered background, and achieves the most visually acceptable salient object detection results.     

一种基于LUV均匀颜色空间的彩色分割方法

本文提出一种通过转换颜色空间和颜色聚类的方法来实现对彩色图像的分割。由于RGB颜色空间是非均匀空间,算法首先把RGB颜色空间转换到LUV均匀颜色空间,然后对颜色进行相似合并,最终由几种颜色表示待分割的图像,从而实现对彩色图像的色彩分割。     

封端型多异氰酸酯加成物的合成

使用甲乙酮肟、己内酰胺及苯酚等不同的封端剂合成了一系列封端型多异氰酸酯加成物。通过DSC和TGA研究了不同封端剂和不同多元醇对封端型异氰酸酯加成物解封温度的影响。测试并比较了各种封端型异氰酸酯加成物与端羟基聚丁二烯的反应物达到凝胶所需要的时间;并探讨了封端加成物在不同聚合物多元醇中的溶解性能及封端型加成物结构与性能之间的关系。     

悬钩子属植物三萜类化学成分及波谱特征研究进展

对悬钩子属植物中三萜类成分研究进行综述,并对其波谱特征进行归纳总结。从悬钩子属植物中已分离得35个三萜类化合物,其中有9个为齐墩果型,26个为乌索烷型,这些化合物的基本骨架、取代基类型及位置均有其波谱特征。     

KR脱硫搅拌头用耐火浇注料的研制与应用

根据搅拌头破损的原因,选择普通电熔莫来石、高铝熟料为主要原料,A l-80水泥、-αA l2O3微粉、SiO2微粉为复合结合剂,耐热钢纤维为增强材料,确定骨料由8~5、5~3、3~1、≤1 mm四个级配组成。根据与现场使用的浇注料进行1 200℃水冷热震对比试验的结果进行配方优选,对优选后的浇注料进行相关理化性能检测和1 450℃3 h烧后试样的岩相分析,并进行了工业试验。结果表明:研制的搅拌头用浇注料的抗热震性优良,适合在热震苛刻的条件下使用;搅拌头平均使用寿命>730次,每年搅拌头消耗量下降40%,每年减少搅拌头更换与维护非作业时间约550 h,提高产能6%。     

A Modified Hortonian Overland Flow Model Based on Laboratory Experiments

Overland flow, which is examined here, is an important hydrological response to storms of a catchment. And it is also a main component of hillslope hydrology. Through controlling of rainfall intensities and changing of artificial slope angles, 49 overland flow hydrographs are obtained from rainfall-runoff simulation experiments conducted on a manmade hillside. Based on the measured overland flow processes, the relationship between the average water depth on the hillslope and that at the outlet, which is nearly a quadratic curve, is obtained. The relationship is different from the assumption, in which the average water depth on the hillslope is equal to that at the outlet, proposed by Horton. Finally, a regression equation is also presented, which provides both the theoretical and experimental basis to modify the time delay of peak flow for a distributed rainfall-runoff modeling.     

地震作用下“板型”高层钢混框架结构响应分析

义马某气化炉厂房,长56 m,宽19.5 m,高56 m,为"板型"钢筋混凝土框架结构体系。考虑该厂房中设备对系统动力特性的影响,采用大型有限元软件ANSYS对结构的自振特性进行分析。结果表明:结构在第四、五阶模态呈现翘曲模态,充分显示了结构的厚板特征。通过对3种地震波作用下结构位移和加速度响应的对比分析,显示框架结构对天津波反应比较敏感。通过对地震信号进行FFT变换,显示结构前5阶频率均处于天津波能量谱最大范围内,证实了结构对天津波敏感的原因。