轧制规程优化设计

介绍了板、带材压下规程及型材的孔型优化设计问题，并指出了设计特点与方法，给出了优化后的效果。为钢材及其它有色金属轧制规程的设计提供了设计方法。     

Crystal Plasticity Finite Modelling of 3D Surface Asperity Flattening in Uniaxial Planar Compression

Rate-dependent crystal plasticity constitutive model has been employed into finite element software ABAQUS to simulate surface asperity flattening in uniaxial planar compression. Measured textures and surface roughness are introduced into the 3D surface roughness model. The calculated results show a good agreement with the experimental results. With an increase of reduction, the surface asperity flattening tends to increase, and Goss texture {011} 〈100〉 and brass component {110} 〈112〉 become stronger, whilst the cubic texture {001} 〈100〉 becomes weaker. If the reduction reaches 40%, Schmid in-grain shear band appears and the strain localisation starts. The evolution of surface feature (roughness) shows the obvious sensitivity on the orientation {111} of near-top surface.     

Technical Progress of China＇s Delayed Coking Technology

This article introduces the recent advances of China in the fields of process technology of delayed coking, enlarged equipment size, hydraulic decoking, automatic control and environmental protection. By the end of 2004 the total capacity of delayed coking uniis in China had reached 37.24 Mt/a with the maximum coke drum diameter equating to 9.4 m. This article also presents the investmerit in delayed cokers and the current production status while pointing out the existing problems and future development trends.     

井场信息传输标准整合语言

信息技术的发展,使油公司和服务公司之间的实时信息共享成为可能。该文针对80年代提出的WITS(井场信息传输标准)在目前数据传输与转换过程中的局限性,提出了继WITS之后研制开发的WITSML(井场信息传输标准整合语言);在回顾WITS和WITSML形成与发展的基础上,重点探讨了WITSML系统技术软件的开发研制及初步应用过程;对WITSML今后的发展进行了展望。这方面的阐述对推进我国石油勘探与开发过程中加快信息化建设步伐,充分实现井场信息共享并尽快与国际接轨具有促进作用。     

-80°C低温冰柜的系统设计

进行了 - 80°C的低温冷柜的设计计算 ,该低温冰柜采用自然复叠制冷循环 ,采用R2 2 /R1 4混合工质。文中涉及了蒸发器、冷凝器、冷凝蒸发器、中间换热器、毛细管和压缩机的设计计算。这种自然复叠式低温冷柜结构简单 ,在低温医学等方面有较好的应用。     

基于JAVA的网络虚拟现实交互系统的设计

提出了一种新的面向Agent思想的网络虚拟现实交互系统的结构模型，该模型采用B／S模式网络平台构建。针对某型惯性导航装备，给出了基于Cult3D虚拟现实技术的可视化交互系统的实现方法，虚拟装备的动作由用户自定义的JAVA类灵活控制。该系统可与B／S网络平台实现无缝结合。系统测试表明．该设计方案完全可行，虚拟装备形象逼真，交互性好。     

One-step preparation of the superhydrophobic Al alloy surface with enhanced corrosion and wear resistance

Corrosion and wear failures are bottlenecks for restricting applications and developments of Al-based functional materials. As a new lubrication technology, superhydrophobic preparation provides an effective way to settle Al alloy corrosion. The preparation methods of superhydrophobic Al alloys are mainly multistep strategies. In this study, superhydrophobic Al alloy, has been prepared by an efficient one-step electrochemical etching process. Meanwhile, its micromorphology has been observed by a scanning electron microscope. The wettability has been measured by video optical contact angle meter. The corrosion behavior has been tested by electrochemical workstation, and wear performance has been characterized by friction tester. The results show that the micro-nanoterraced concave–convex structure has been fabricated and an as-prepared surface exhibits excellent superhydrophobic behavior. Further electrochemical and tribological tests show that corrosion resistance and wear resistance have also been significantly improved. This study provides a new method to prepare wear-resistant and corrosion-resistant Al alloy for widening applications of multifunctional Al-based engineering materials.     

Engineering Metal Nanoclusters for Targeted Therapeutics: From Targeting Strategies to Therapeutic Applications

Metal nanoclusters (NCs) have recently attracted great interest in biomedical applications due to their ultrasmall size, good biocompatibility, and unique molecule-like physical and chemical properties. Metal NCs can be rationally designed and integrated with various targeting moieties to achieve unique physicochemical properties and functions. For therapeutic applications, these multifunctional surface-modified NCs can provide distinctive advantages over native metal NCs, such as improved therapeutic effects and reduced side effects. In this review, the design principles of targeting strategies for metal NCs and their composites, including passive and active targeting, and physical and chemical targeting are first discussed. The authors then focus on the recent achievements in the application of metal NCs in targeted therapeutics, including chemotherapy, phototherapy, and radiotherapy. Finally, the authors’ perspectives on the challenges and opportunities of developing metal NCs in targeted therapeutics, further paving their way for potential clinical applications are provided.     

基于DSP的电阻炉温度模糊控制系统

为了提高电阻炉温度控制系统的控制精度和动态性能,提出了基于DSP的电阻炉温度模糊控制系统设计方法。该系统采用TMS320LF2407A DSP为微处理器,利用温度传感器AD590采集数据,经过模糊控制算法处理控制PWM输出占空比,实现电阻炉温度的调功控制。实验结果表明：该系统具有较高的稳态精度、较快的动态响应速度。系统所采取的软、硬件设计措施及模糊控制器设计方法具有一定通用性,也可用于其他温度控制系统中。     

停缓建超高层钢结构工程续建时现场大体量喷砂除锈施工工艺

本工程为停缓建全钢结构超高层项目,原结构已建成到25层并暴露在空气中达10年之久,结构钢构件及节点锈蚀严重。经过一系列的专业检测及鉴定,原结构具备复建条件,但必须进行彻底的除锈及有效的防腐处理。结合钢结构锈蚀特点及现场施工条件,续建前采取现场喷砂除锈工艺进行钢结构锈蚀处理,获得了良好的除锈效果,在此基础上重新进行防腐涂装,使原结构全面恢复至全新状态,为下一步续建施工打下了良好的基础。