黄骅拗陷新生代构造样式及其演化

为了揭示黄骅拗陷新生代盆地原型、恢复盆地构造演化历史,运用油区构造解析理论.对黄骅拗陷新生代盆地构造样式及其演化进行综合分析,认为盆区存在伸展式和走滑式两种基本构造样式.在盆地尺度内,按断层几何学和运动学特点,伸展构造样式可进一步分为伸展拗陷、伸展拗断、地堑断陷、多米诺半地堑断陷、滚动半地堑断陷、复式半地堑断陷、跷跷板断陷、伸展断拗8种次级构造样式,并基本遵循伸展拗陷-伸展拗断-伸展断陷-伸展断拗演化序列,这种演化序列与岩石圈的流变学特征和递进伸展变形过程有关.走滑构造样式受深断裂走滑作用控制,可分为雁列式走滑构造和帚状断层组.     

Similarity matrix-based K-means algorithm for text clustering

K-means algorithm is one of the most widely used algorithms in the clustering analysis. To deal with the problem caused by the random selection of initial center points in the traditional algorithm, this paper proposes an improved K-means algorithm based on the similarity matrix. The improved algorithm can effectively avoid the random selection of initial center points, therefore it can provide effective initial points for clustering process, and reduce the fluctuation of clustering results which are resulted from initial points selections, thus a better clustering quality can be obtained. The experimental results also show that the F-measure of the improved K-means algorithm has been greatly improved and the clustering results are more stable.     

辽河蜡油催化油浆在橡胶和塑料中的应用

由辽河蜡油催化油浆开发的橡胶软化剂、充油橡胶、填充油和塑料或橡塑共混料的增塑剂．经进行各种性能分析并与几种常用同类产品（紧缺、昂贵对比，显示较好的使用性能，具有明显的经济效益和社会效益，它为扩大这类产品的生产和应用提供了良好的前景．     

合理确定测试系统频响特性之重要性

本文简述了测试系统及其组成，并以实例介绍了影响系统频响的几个主要环节，进而说明了测试频响特性的重要意义。     

硫、磷系添加剂作用机理的研究

对硫、磷系添加剂的相互作用进行了研究,并用HQ-1型摩擦磨损试验机考察了其复配对润滑油抗磨极压性的影响。结果表明:硫、磷系添加剂复配,在一定的摩尔比范围内,抗磨极压性具有协同效应,摩擦表面生成含硫化铁和磷化铁为主体的化学保护膜,并发现T321与T304在一定反应条件下,生成新的含磷化合物。     

淬火处理对(Ti-Fe)-Al-C体系TiCp/Fe复合材料组织及性能的影响

采用淬火工艺对原位TiC颗粒增强Fe基复合材料进行了热处理。热处理后,复合材料的相组成不变,但是TiC颗粒由方形变成球形,固溶析出的TiC颗粒在某些TiC颗粒的表面沉积,使后者粗化;另一些方形颗粒的尖角处溶解形成直径更小的球形TiC颗粒。复合材料的硬度和耐磨性均提高。轻载条件下,复合材料的耐磨性能更好。     

Effect of deformation and cooling rate on the transformation behavior and microstructure of X70 steels

The effects of the deformation in the non-recrystallization region of austenite and the cooling rate on the transformation behavior and microstructure of low-carbon low-alloy steel for pipeline application were studied on the thermal-mechanical simulator Gleeble-1500. It was shown that an increase in deformation amount can greatly increase the nucleation site of ferrite when deformed in the non-recrystallization region of austenite, and an increase in nucleation ratio can greatly refine grains. When the cooling rate is accelerated, the driving force of nucleation is increased and the nucleation rate also improves. Ultra-refine grains can be obtained by controlled rolling. The high density of ferrite nucleus, which forms along the austenite grain boundary, twin interface, and deforma- tion band are introduced in the matrix of austenite by the control of hot rolling, after which the microstructure can be refined. It was found that the acicular ferrite has a very fine sub-structure, high dislocation density, and a thin slab with ultra-fine grains. Small M/A islands and cementite are precipitated on the matrix of the slabs by the analysis technique of TEM and SEM.     

V5接口链路身份标识存在的问题及解决方法

在开发接入网标准接口--V5.2接口的过程中,发现链路身份标识过程中存在着异常中止问题,详细分析了问题出现的原因,并分别提出了AN侧和LE侧的解决方案.     

化学气相沉积法制备TiC涂层的相组成和表面形貌

用化学气相沉积法在碳／碳复合材料表面沉积ＴｉＣ涂层。研究了工艺参数对ＴｉＣ涂层的相组成和表面形貌的影响以及ＣＶＤ ＴｉＣ涂层的沉积机理。实验结果表明,当进入沉积室的气体流量比为Ｈ２：ＴｉＣｌ４：ＣＨ４＝３００：２５：１０时,所得涂层中含较少的游离碳,ＴｉＣ纯度较高。随ＣＨ４流量增加,游离碳含量增加。     

基于转捩模型的涡轮流场及性能数值模拟

基于耦合Langtry-Menter转捩模型的SST湍流模型,通过求解雷诺平均的N-S方程组对不同雷诺数工况下5台涡轮部件的性能及流场进行了全三维粘性定常计算。计算结果表明,所预测的5台涡轮效率及流通能力随雷诺数减小的变化量较俄罗斯经验关联曲线所给出的变化量偏低1~2个百分点左右。总的来说,建立的基于转捩模型的数值计算方法能够较好地评估雷诺数效应对涡轮性能的影响,具有较好的工程应用价值。