小长径比药盘钢模压制成型工艺研究

通过对炸药压装成型过程的深入分析，揭示了钢模压制小长径比药盘的技术关键是必须使所装填的散粒体炸药在压件的横断面上全面实现其质量的合理分配，设计定程式双向钢质压模，合理确定垫圈厚度和括药器结构。     

SSS-300同步系统延迟时间的分析

震源同步系统产生的验证时断信号是一种重要的辅助道数据，用于辨识震源激发与数据采集是否同步。本文对验证时断信号落后于钟时断信号的原因进行了分析，测试了电路的总延迟量和分段延迟量。阐述了提高震源同步系统的同步精度，保证验证时断信号对同步辨识准确性的方法。     

Geology of the tengchong geothermal field and surrounding area, West Yunnan, China

This paper describes the regional tectonics, active structures and thermal springs of the Tengchong geothermal field and surrounding area. Regional tectonic evidence shows that Tengchong and the surrounding area was a microcontinent between the Gondwanaland and Eurasian plates. The distribution of the thermal springs is controlled by active faults in the “arched” and circular structures. The majority of the thermal areas have a deep circulation within the fault system. Only a few high-temperature hydrothermal systems issuing sodium chloride may be heated by a local magmatic source.     

Direct tensile behavior of a transversely isotropic rock

The tensile behavior of a transversely isotropic rock is investigated by a series of direct tensile tests on cylindrical argillite specimens. To study the deformability of argillite under tension, two components of an electrically resistant type of strain gage with a parallel arrangement, or a semiconductor strain gage, are adopted for measuring the small transverse strain observed on specimens during testing. The curves of axial stress vs axial strain and vs average volumetric strain are presented for argillite specimens with differently inclined angles of foliation. Experimental results indicate that the stress-strain behavior depends on the foliation inclination of specimens with respect to the loading direction. The five elastic constants of argillite are calculated by measuring two cylindrical specimens in the manner recommended by Wei and Hudson. Based on theoretical analysis results, the range of the foliation inclination of the specimens tested is investigated for feasibility obtaining the five elastic moduli. A dipping angle of the foliations (θ) of 30–60° with respect to the plane normal to the loading direction is recommended. The final failure modes of the specimens are investigated in detail. A sawtoothed failure plane occurs for the specimens with a high inclination of foliation with respect to the plane perpendicular to the loading direction. On the other hand, a smooth plane occurs along the foliation for specimens with low inclination of foliation with respect to the plane normal to the loading direction. A conceptual failure criterion of tensile strength is proposed for specimens with a high inclination of foliation.     

Crosslinked chitosan doped with Y2(CO3)3 and surface energy and electrorheological properties

Novel electrorheological materials based on crosslinked chitosan doped with Y₂(CO₃)₃ were synthesized with biocompatible chitosan as the substrate of the materials. The electrorheological performance, surface energy, and thermal decomposition behavior of the materials were investigated as functions of the composition change. The results show that doping Y₂(CO₃)₃ can improve effectively the electrorheological performance of crosslinked chitosan with the formation of a metal–polymer complex when the doping degree is suitable. The surface energy plays an important role in influencing the electrorheological properties of the material. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007     

中国流行面料流行趋势研究和产品开发的结晶

世界发达国家多年的成功经验证明，流行趋势的研究、预测及发布，对于指导企业产品开发，刺激市场消费具有巨大的社会意义和商业价值。近三年来我国纺织面料流行趋势的研究、预测及发展取得了和 的进步、在引导企业产品开发，向时尚化、个性化、高档化迈进，大力宣传国产面料，实现顶替进口面料，完成纺织突破口的任务中起到了一定的促进作用。     

基于神经网络的电机智能检测系统

利用神经网络技术建立电机的检测模型，由计算机构筑电机智能检测系统，与电机控制和执行机构相结合，对电动机进行控制，利用各种新型的传感技术，实现电动机各种参数的数据采集与分析处理，从而对电动机的性能进行判断。     

Simulation of deformation and temperature in multi-pass continuous rolling by three-dimensional FEM

This paper presents a new method for modeling a rod and wire continuous rolling process. Three-dimensional FE models of the whole rolling process are established by the proposed method that consists of a pushing technique of rigid body and a method of data transfer, and it is utilized to analyze the deformation and the temperature distribution of billet during the multi-pass rolling process. The pushing technique of rigid body is developed to keep the contact status between the deformable body and a rigid body and to push the deformable body forward during inter-pass time. The method of data mapping is adopted to transfer element field variations between meshes of different models by an interpolation function. The model was applied to simulate 18 stands rolling process of a 304 stainless steel and provides an insight into the process by studying the billet deformation and the temperature distribution. It shows fairly good agreement between the predictions and the measured values of temperature.     

正丁烷水蒸汽催化转化反应动力学

用内循环式无梯度反应器研究了正丁烷和水蒸汽在 Z409催化剂上的转化反应动力学。实验结果表明在实验条件范围内反应产物除氢、一氧化碳、二氧化碳及甲烷以外,不含其他烃类,而且水煤气变换反应始终接近热力学平衡。提出了该反应系统的反应模式。假定催化剂表面上存在两类活性位,且烃类的 C-C 键很快地断裂而生成单碳中间化合物,继而转变为碳-组分(即 CO,CO_2及 CH_4)。根据所提出的反应模式导出了各个反应的速率方程,与实验结果甚相符合。     

The Effect of the Ausforging-and-Tempering on the Microstructure and Mechanical Properties of Steel 86CrMoV7

Thermomechanical treatment as an effective method has been carried out in order to obtain a better combination of high strength and excellent toughness. In this work, the hot deformation behavior of 86CrMoV7 steel has been studied, and then the process of ausforging has been designed. The microstructures and mechanical properties of 86CrMoV7 steel by (1) direct quenching after forging (ausforging) and tempering, (2) quenching-and-tempering and spheroidizing annealing have been investigated. The results show ausforging-and-tempering provides high strength but same toughness as classical quenching-and-tempering.