明代盔甲种类及制作工艺研究

本文通过盔甲的制作及材料,区分了非金属材料的皮甲、瓠子作甲、藤甲、绵甲、纸甲以及金属材料组成的齐腰甲、齐腰明甲、缉甲、布甲、铁甲、钢甲、铜甲、锡甲等类型,并对其制作方式等进行分析。结合不同材质盔甲的使用地区、战争方式进行研究,以对明代盔甲有一个整体性的认知。     

[工程应用]智能制造场景的5G应用展望

为满足智能制造领域物联网当前发展的需求，研究了相应制造场景的5G应用技术。介绍了5G的关键技术，包括5G支持的应用场景、网络切片、网络功能虚拟化（NFV）/软件定义网络（SDN）、多接入边缘计算、设备对设备通信技术等；给出了基于扩展的信息物理系统5层框架，基于该框架分析了多个智能制造场景的5G应用（包括人机界面和生产信息技术、流程自动化、工厂自动化、物流和仓储、设备监控和维护等）；给出了以上应用的5G边缘计算开发框架，以集成上述场景；探讨了5G应用于智能制造场景所面临的多个挑战，以助于5G使能智能制造的落地应用。     

Ti-6Al-4V电弧熔丝增材轧制复合制造的有限元模拟

增材制造过程中由于在凝固及随后的冷却阶段易产生残余应力,从而影响部件的成形和使用。在增材过程中引入轧制工序,可望降低宏观残余应力,从而降低部件的变形。本文通过建立Ti-6Al-4V钛合金电弧熔丝增材与层间轧制复合成形过程的有限元模型,研究圆柱形轧辊条件下不同压下量对部件温度、应力、应变及残余应力分布的影响规律。结果表明,层间轧制可显著降低沉积层金属中的残余宏观应力；同时降低对基板的整体应力。采用圆柱形轧辊并增加压下量可显著降低宏观残余应力,还可以通过塑性变形改变材料的微观组织,提高材料性能,为复合增材工艺的优化指明了方向。     

Using a hybrid two‐stage DEA model to analyze the profitability and marketability of medical manufacturing firms

The purpose of this study is to develop a modification of the model developed by Chen and Zhu in 2004. Calculating stage and overall efficiencies precisely and consistently has become a major challenge of the two‐stage DEA model. However, most other models do not calculate the optimality of intermediates. Although the model developed by Chen and Zhu measures the optimality of intermediates, the calculated efficiency scores still have some shortfalls. The modified model, named the hybrid two‐stage DEA model, fills the gap between calculating the optimality of intermediates and the consistency of overall efficiency scores. In addition to obtaining an accurate measurement for the optimality of intermediates, the model confines efficiency scores to a range from zero to one (a ratio efficiency score). In an empirical evaluation, we use data from 64 medical manufacturing firms to test the performance of the hybrid model and offer recommendations for the industry.     

基于Python的油田生产资料预处理软件设计与应用

油田内部生产资料类型包括钻井、录井、测井、试油等多种类型。针对资料整理过程中存在的问题如:从原始资料库中下载的资料格式多样;不同石油软件所需加载的数据格式不同;已有资料预处理软件功能均较单一等,从编程语言优选、软件兼容性、软件功能集成化三个方面出发,选取Python语言进行软件设计,利用Python扩展性强的特点,设计出红番茄资料预处理软件,并在新疆油田进行试点,生产资料整理时间缩短至原耗时间的约33%。Python语言在油田生产中的应用可为具有相同问题的其他油田提供参考。     

模具设计与制造专业群虚拟仿真实训基地建设路径研究

针对模具设计与制造专业群实训教学开展过程中存在的问题,开展专业群虚拟仿真实训基地的建设,通过精密模具智能制造生产线仿真实训工厂、模具数字化设计及智能成型单元综合应用平台、开放共享课程资源等3个方面内容的建设,引入行业新技术、新工艺、新标准,确保虚拟仿真教学资源与学生职业能力培养相一致。基地建设依托智能制造新技术,以培养高层次复合型技术技能人才为主线,满足实训教学为核心,多方共享为目标,助力区域经济发展,服务"鲁班工坊"国际化建设,最终实现虚拟仿真实训基地区域示范性效果。     

Optimization of environmental impact reduction and economic feasibility of solvent waste recovery using a new software tool

The environmental impact reduction and operating costs savings associated with the purification and recovery of solvent waste in the manufacture of active pharmaceutical ingredients (API's) were investigated. A software toolbox has been developed that combines Aspen Plus^® process simulation with SimaPro^® and Ecosolvent life cycle assessment (LCA) databases. A LCA approach was used in order to consider the environmental impact beyond pharmaceutical production plant boundaries. The feasibility of a relatively small flexible equipment-skid capable of recovering multiple solvent waste streams was evaluated. Distillation and pervaporation were considered to separate binary waste solvent mixtures. Optimum distillation reflux ratio and feed stage were determined to maximize the environmental impact reductions and operating cost savings. The optimum reflux ratio was significantly higher than 1.2 times the minimum reflux ratio suggested by traditional heuristics. The emissions and cost reductions obtained were as much as 49% and 56% higher, respectively, as compared to using the conventional optimum reflux ratio. A comprehensive cash flow analysis showed that the recovery of low volume solvent waste streams is economically feasible, despite traditional thinking. Three case studies from Pfizer are presented to show how our software tool can aid in green engineering decision making.     

含磷石灰岩矿的特征及其对水泥生产的影响

简要地分析了磷酸盐矿物的地质特征和结构特征,并详细分析了安哥拉罗安达水泥厂含磷石灰岩矿床的化学组成、磷和氟含量及其矿物特征和形貌。在此基础上,重点试验研究了P2O5对水泥生产和熟料性能的影响情况。试验结果初步显示:(1)含磷高的原料对熟料的烧成和产品性能影响很大,因P2O5既会影响水泥熟料矿物C3S的形成,还会阻碍水泥的早期水化,严重影响水泥的凝结和硬化过程;(2)熟料中当w(P2O5)2.0%时可以制备性能满足要求的水泥,在生产控制中要严格控制生料中w(P2O5)1.0%[石灰石中w(P2O5)0.8%]为宜;(3)在含磷熟料中,适量F-的存在[w(F-)0.35%]能降低P2O5的负影响。     

双相不锈钢在压力容器中的应用

双相不锈钢制压力容器设计制造技术,是我国压力容器建造标准中需要完善的部分.结合多年来双相不锈钢的设计使用经验,对双相不锈钢压力容器的设计、制造检验和验收提出系统的技术要求,供双相不锈钢设备的设计、制造参考.     

高层办公楼钢结构安装的施工方法

北京财富中心一期工程办公楼高层钢结构采用《高层建筑钢结构安装的施工方法》专利技术进行现场安装，施工方便，安全可靠，质量、进度易于保证，施工效果良好。