昆阳磷矿擦洗原矿性质

重点介绍了云南磷化集团昆阳磷矿擦洗工艺,根据大量水析实验,为擦洗工艺提出合理的配矿方案和工艺技术参数,也为集团公司下属其他几套擦洗装置提供参考依据.     

体内抽气擦洗式浮动床

离子交换水处理法是水的化学除盐和软化的主要方法,我国现有各种离子交换装置数以万计。本文论述了研制新型离子交换水处理装置必须首先正确选择水和再生液的流动方向,同时要满足离子交换动力学上的要求。在清除树脂层中悬浮物的方法上,提出了利用可控制有限空间以抽气擦洗代替设置专设罐以压缩空气擦洗或水力清洗。新装置结构简单、合理,操作方便,出水品质好,安全可靠,运行经济性高,特別适用于工业锅炉给水处理,对当前工业锅炉防垢节能有重要意义。     

浮法玻璃的化学脱色研究

对铁含量为0．12％、0．16％的钠钙硅浮法玻璃进行了脱色实验研究,测定了样品的色差和总透过率,比较了纯氧化铈与廉价混合碳酸稀土作玻璃脱色剂的效果。表明采用混合碳酸稀土作玻璃脱色剂可获得良好的脱色效果并使脱色成本降低50％。     

浮法玻璃的化学脱色研究

对铁含量为0．12％、0．16％的钠钙硅浮法玻璃进行了脱色实验研究，测定了样品的色差和总透射率，比较了纯氧化铈与廉价混合碳酸稀土作玻璃脱色剂的效果。表明采用混合碳酸稀土作玻璃脱色剂可获得良好的脱色效果，并使脱色成本降低50％。     

桥梁结构防落梁与碰撞装置综述

由于伸缩缝宽度不足或主梁位移过大等,强震作用下桥梁结构可能产生碰撞,甚至落梁等严重震害.因此,对减小上述震害的防碰撞和防落梁装置,如限位装置、阻尼器和模数式伸缩缝装置等进行了综述,探讨了这些装置优点、不足及应用;介绍和比较了国内外防落梁装置的设计方法;分析和比较了不同国家和地区抗震设计规范中梁端最小支承长度的规定.对我国强震区防落梁、防碰撞装置的应用和发展提出了具体建议.     

山东啤酒瓶玻璃的性能问题

本文将山东啤酒瓶玻璃的性能与美国的绿色瓶罐玻璃的性能作了比较,指出了前者存在的问题和解决这些问题的困难。     

寻求事半功倍的咨询方法

当组织决定申请质量管理体系（ISO9001）或者环境管理体系（ISO14001）认证时,通常会聘请咨询师。规模大的组织已有较好的体系和充足的内部资源,聘请咨询师主要是满足培训的需要。中小规模的组织在培训、缺陷分析、文件和全面的管理体系开发方面往往严重依赖于咨询师的帮助,对于这些组织而言,其管理体系的效果很大程度上取决于咨询师。咨询师的费用比较昂贵,如果这个管理体系没有效果,中小规模的组织即使没有破产,也不会收回实施它的成本。     

新型自清灰风量测量装置在600MW机组的应用

介绍600MW锅炉风量测量系统的设计、选型,针对锅炉风量测量装置或管线由于含粉尘大而造成风量测量不准、甚至坏点现象,分析在机组大修中对锅炉风量测量系统进行改造的措施及其效果。     

玻璃鳞片树脂在脱硫装置上的应用

简述玻璃鳞片树脂衬里的特点,介绍玻璃鳞片树脂衬里作为防腐材料在国内外湿法烟气脱硫装置中的应用情况。并分析玻璃鳞片树脂在使用过程中被破坏的原因,有助于相关人员对脱硫装置防腐材料的选材、施工、运行维护。     

玻璃鳞片填充树脂的抗水渗透行为

本文通过玻璃鳞片填充不饱和聚酯薄片和涂层对水渗透行为的研究,认为玻璃鳞片具有优良的抗渗性。特别在用大体积粒子、高浓度填充和偶联剂处理后,玻璃鳞片有更好的抗渗效果。     

基于差动电容的超导陀螺转子偏移测量研究

根据球形差动电容传感器测量微位移的原理和变压器电桥的变比为实数且稳定性高、变比精度和灵敏度高及工作频率范围较宽的特点,提出了将差动电容传感器与变压器电桥相结合的测量超导陀螺转子偏移方案并给出了各参数之间的关系,该方案能测量出转子偏移的大小和转子偏移的方向,分析了影响陀螺转子偏移测量精度的因素,指出差动电容传感器的分布电容、陀螺转子的零电位、模型误差以及激励信号频率和幅值精度是影响其测量精度的主要因素并提出了降低不利影响的方法或模型适应范围,从而为实现超导陀螺转子偏移的高精度测量提供了理论依据。     

Net-shape forming of composite packages with high thermal conductivity

The continuing miniaturization of electronic devices in microelectronics and semiconductors drives the development of new packaging materials with enhanced thermal conductivity to dissipate the heat generated in electronic packages. In recent years, several promising composite materials with high thermal conductivity have been developed successfully for high performance electronic equipment to replace the traditional Kovar and Cu/W or Cu/Mo alloys, such as SiCp/Al, SICp/Cu, diamond/Al and diamond/Cu. However, these materials with high content of reinforcements have not been widely used in packaging field because they are hard to be machined into complex-shaped parts due to their greater hardness and brittleness. So, it is necessary to explore a near-net shape forming technology for these composites. In this paper, a novel technology of powder injection molding-infiltration is introduced to realize the near-net shaped preparation of the composite packages with high thermal conductivity.     

Cutting-Edge Space Exploration Technology Maturity Level Facilitation with Support of Space Debris Removal Missions

Considering current space debris situation in outer space environment, different methods for debris removal missions are proposed. In addition, advanced technologies are needed to be demonstrated for future human space exploration programs. The main issue regarding to these missions is high mission cost for both debris removal missions and space environmental tests to achieve high maturity level for new space-usable technologies. Since, these missions are unavoidable for future of human space activities, a solution which can tackle these challenges is necessary. This paper will address to an idea which has the possibility to give a solution for facilitating technology readiness level (TRL) maturity tests by debris removal mission platform consideration.     

Heating and Life Problem of High Power Density Induction Motor

An induction motor with its speed modulated by frequency features wide transfer speed range, high systematic efficiency, simple structure and long life, and it therefore becomes one of the best driving motorsused in electrical vehicles. The present research trend of it is high power, high speed, high efficiency and longlife. How to meet the above requirements by using the electromagnetic design, structure design and heat de-sign, becomes a matter that needs to be resolved now. In this paper, the characters of the motor in operation areanalyzed, all kinds of factors that relate to life are laid out, its heating and loss are discussed and analyzed.The key reasons affecting the motor life are presented, and different characters of a high induction motor are compared with these of a general induction motor. A design idea is described, that is : we should consider how to improve the efficiency and reliability as well as how to reduce the heating by changing the electromagnet,structure, dissipation and operation of the motor. How to reduce its losses and to improve its dissipation has been presented in the paper.     

DEVELOPING A NEW GENERATION OF HIGH PERFORMANCE COMPOSITE CEMENT

This paper proposed a new generation of high performance composite cement which is designed according to the optimization of composition and structure of cement paste and is manufactured by blending the different components with special composite techniques. Each of these components has its different special property, and should be compatible with each other, and match each other,and the properties of them are complementary mutually. At present, such kind of high performance composde cement can be manufactured with high reactivity cement clinker, ground granulated blast—furnace slag, high grade fly ash, silica fume etc..     

Triaxial high-g accelerometer of microelectro mechanical systems

A triaxial high-g accelerometer of microelectro mechanical systems(MEMS) has a structure of multi-chips combination and will be used in aerospace field, civil and military fields. The accelerometer can measure the acceleration of the carrier. The chips with island-membrane structures on its back surfaces are made by MEMS dry processing. The chip is reasonable and can work well under high impact load; Titanium alloy base is also stronger in high shock environment, these are proved by finite element analysis. Finally, the MEMS combined triaxial high-g accelerometer is validated by high impact calibration experiments in order to get a key performance index, including range, sensitivity and transverse sensitivity and so on. These data can satisfy the need of design but some problems remain, these will be eliminated by improvement of the processing technology and materials.     

长列高强螺栓接头传力特性的有限元数值模拟

为研究摩擦型高强螺栓连接接头的传力特性与应力状态,采用通用有限元软件ANSYS建立三维有限元实体模型,对东江大桥中14个不同的螺栓连接接头进行了细致的有限元数值模拟分析。重点研究了长列螺栓群各排螺栓传力比、栓孔应力集中系数,高强螺栓的应力状态以及孔前传力系数等参数的变化规律,明确提出了各参数的取值范围,可为该类型节点的设计验算提供参考。     

基于MDA架构的软件开发方法研究

传统的软件产业存在着许多问题，其表现为开发效率不高，常常会因为各种问题而使项目超期，经过长时间开发出来的信息系统也存在的质量问题，通常需要耗费大量的人力去进行后期的维护。由于这些原因，所以软件开发成本也往往是大大超出预期，很多情况下公司不得不放弃那些最终成本代价过高的项目，或者是减弱其原先设计的功能来节约成本。虽然目前软件业经过几次软件危机之后，先后提出了基于软件工程的开发方法和许多被验证为成功的设计模武和框架。然而这些并没有从根本上解决现今软件业面临的问题。模型驱动架构（model driven architecture）就是在这样的大背景下被提出的一种新型软件开发方法。本文将结合具体的应用对MDA开发方法进行探讨。     

超高压输电线参数频率特性测量

超高压线路参数频率特性对于研究电力系统操作过电压有着重要意义,其测量方法主要有电压电流—功率表法、电容放电法、功角法和谐振法等等,但是,这些方法在测量范围、精度和对设备的要求等方面都存在较大的缺陷。本文采用计算机求解长线超越方程和线路首端串接电容改变谐振点等措施,改进了谐振法,使测量数据大大增加,精度也得以提高。此外,本文还设计了一种新的测量方法——响应法。     

政府要帮助西部民营企业突破人才障碍

指出了中国西部民营企业高速发展需要创业型、管理型、技术型、技能型与市场中介型等 5种人才。西部地方政府帮助企业开发人才有三种有效途径 :引导企业按市场经济规范运作 ;从制度上逼压高校科研院所与企业合作 ;抓好社区的创业教育