Fracture Resistance of Ceramics upon Edge Chipping

Modern methods of determining fracture resistance are analyzed. The necessity of developing a crucially new method based on edge chipping of a brittle material is shown. The results of experimental studies are presented. The applicability of the method to the comparative fracture resistance evaluation of ceramics is substantiated.     

图象中心加权中值滤波的改进与应用

中心加权中值滤波具有较好的边缘保持特性及快速实现的特点，但滤噪能力低于其它中值滤波。此文探 讨对中心加权中值滤波的改进方法，提出了中心加权分级实现的思想，使之同时具有边缘保持、快速滤波和噪声去 除的理想效果。     

眼球的自动定位

提出了一种由粗到细自动定位人脸的一个重要特征即眼球圆心的方法，该方法综合运用局部二值化，霍夫变换，像纱聚类，边缘提取等技术，对均匀或非均匀光照下拍摄或戴眼镜的照片都能获得很高的定位精度，适用于处理证件照。     

Edge detection,three-dimensional cell boundary reconstruction and volume and surface area estimation from differential interference contrast images

Three-dimensional (3-D) cell morphology is important for the understanding of cell function and can by quantified in terms of volume and surface area. Differential interference contrast (DIC, or Nomarski) imaging can enable cell edges to be clearly visualized in unstained tissue due to the slight difference in refractive index between aqueous media and cytoplasm. DIC is affected in only one direction - the direction of the optical shear. A 1-D edge detector was used in that direction with a scale length equal to that of an in-focus edge to highlight cell boundaries. By comparison with the signal from the edge detector on an out-of-focus slice, the in-focus slices could be segmented and, after noise suppression, cell outlines obtained. A voxel paradigm was used to calculate cell volume and differential geometry was used for surface area estimation. We applied this approach to obtain 3-D dimensional information by optical sectioning of motile Amoeba proteus.     

太钢4号高炉喷煤站应用MFD—Ⅲ型布袋除尘器的实践

太钢４号高炉喷煤站从１９９０年起采用ＭＦＤ－Ⅲ型脉动反吹式布袋除尘器。这种除尘器采用脉动式反吹清灰设施，合理布置布袋间距，布袋支撑骨架及选用针呢材质的布袋，过滤面积大，反吹清灰效果好，设备运行平稳，除尘效率高达９９．８％，排放浓度小于１０ｍｇ／ｍ＾３，故障率低。     

焊接波浪状边缘薄钢带的高上山成型法

介绍了高上山成型法的工艺特点及理论上的可行性和实践中的可靠性，此方法能有效地解决薄钢带波浪状边缘的焊接方面存在的问题。     

超径大块石二次爆破简便引爆装置的研究与应用

岩石爆破工程中,不可避免的会产生一些超径大块石,这些大块石一般质量都非常好,能满足砼对骨料质量的要求,但一般情况下都要进行二次爆破才能满足粒径要求。本文介绍了白石水库工程超径大块石二次爆破过程中工程技术人员经过技术研究和实验,利用废弃的导爆管与价格低廉的火雷管组合制成了技术上可行,操作上简单的新的引爆装置的成功经验。     

A tolerant approach to reconstruct topology from unorganized trimmed surfaces

Presented in this paper is a topology reconstruction algorithm from a set of unorganized trimmed surfaces. Error-prone small geometric elements are handled to give proper topological information. It gives complete topology to topologically complete models, and it is also tolerant to incomplete models. The proposed algorithm is vertex-based in that clues for topological information are searched from the set of vertices first, not from that of edges.     

炉台紧急吹扫故障判断方法

通过对炉台设备的简介及紧急吹扫的统计分析,提出了判断紧急吹扫故障的合理方法,提高了故障的准确判断率,减少了对生产的影响。     

层序地层学在碳酸盐岩气藏开发早期地质评价阶段的应用——以川东北罗家寨鲕滩气藏为例

川东北地区罗家寨飞仙关组鲕滩储集层为碳酸盐岩台地边缘相沉积，具有厚度大、分布稳定的特点。应用层序地层学方法理论，对飞仙关组进行层序划分与对比，划分了5个四级层序10个体系域，建立了该区的沉积模式。作为主力储集类型的台地边缘鲕滩相发育于第1个层序的高位期及第Ⅱ、Ⅲ层序中。罗家寨地区发育两个（期）边缘鲡滩，由东向西推移，西部滩体的形成时间晚于东部。两个滩体经历的成岩过程有所差异，东部滩体经历了5期白云石化和淡水溶蚀作用，西部滩体白云石化及溶蚀作用明显减弱，只可以识别出微弱的白云石化作用，因此东部滩体储集性能优于西部。图4表1参7