阳离子对木质素减水剂性能影响研究（2）

研究了不同阳离了木质素磺酸盐对水泥浆凝结时间的影响。     

节能与环保系列报道之八——甘肃省砂加气混凝土砌块自保温节能材料应用与研究

针对在加气混凝土砌块自保温节能材料砂甘肃省难以推广和应用的现状,根据对庆阳市应用砂加气混凝土砌块作为自保温节能墙体材料的调查研究,分析了甘肃省砂加气混凝土砌块自保温节能材料的性能特点和应用技术,提出了推广和应用的相关建议。     

一种航空深弹安定器的CFD优化设计

静稳定性是航空深弹稳定飞行的先决条件,某对称配置的航空深弹静稳设计主要通过调整安定器的外形和相对位置实现。利用CFD方法研究某航空深弹在各种安定器外形参数条件下的流体动力参数,优化在总体接口条件限制下最可能实现的安定器外形设计。通过使用Fluent软件计算结果与试验结果的比较,认为此计算结果可信。     

水下发动机复合壳体一体化设计技术

介绍了水下发动机复合壳体一体化设计新技术,对其耐外压性能进行了仿真计算,并对发动机尾罩耐压性能和防渗性能进行了试验验证。结果表明,水下发动机可以采用以玻璃钢为主体材料的一体化复合壳体,在有效减小发动机质量和体积的同时实现水下密封,可广泛应用于水下高速航行器设计。     

Evaluation of solar temperature field under different wind speeds for Shanghai 65 m radio telescope

The Shanghai 65 m radio telescope is currently the largest full range rotatable radio telescope in Asia. Gravity, wind and temperature are the three main factors which may have a bad effect on the reflector’s surface precision. To study the effect of the thermal deformation caused by daily non-uniform temperature fields on the surface precision of the main reflector, both the temperature field and its effect were studied in detail for two typical days (January 15th and July 15th). The method to simulate temperature fields was studied initially, considering heat conduction, solar radiation, shadowing, air convection, sky radiation and ground radiation. Then, an integral parametric thermal finite element model (FEM) of the telescope was established using the ANSYS thermal analysis module. Finally, the effect of non-uniform temperature fields on the surface precision of the main reflector was estimated in terms of the Root Mean Square (RMS) deformation based on temperature transient analysis. The proposed methods and conclusions drawn can provide valuable information for thermal design, thermal monitoring and thermal control of the Shanghai 65 m radio telescope and other similar giant antenna structures.     

Planning for Health: Complexity of Environmental Health and Planning Responses

China's rapid urbanization has led to increasing environmental health problems, which poses great challenges to urban sustainable development. In order to explore the scientific issue of planning for health, this paper firstly analyzes the challenges of spatial planning caused by environmental complexity in terms of health risk, environmental impact, and residents' behavior. And then it puts forward an analytic framework that includes three basic modules, i.e., theoretical model, regional health risk identification, and planning performance assessment, thereby finally proposing six spatial planning strategies according to the objectives of health protection, health promotion, and health equity, on the basis of the actual situation of health risk exposure, environmental friendliness, and the aging level in different cities of China.     

内蒙古某银锌矿选矿试验研究（增刊）

内蒙古某银锌矿为含低品位铅锌的硫化银矿石,其中银品位为151.1g/t, 铅、锌品位分别为0.27%和0.56%,硫含量为1.30%,鉴于矿石中铅品位比较低,难以单独富集为铅精矿,采用原矿优先选银（铅）-选银（铅）尾矿锌硫混选-锌硫分离工艺进行试验,最终可以获得银品位为9848.81g/t、铅品位为17.41%,银、铅回收率分别为85.40%和88.46%的银精矿,其中锌含量为4.00%、硫含量为34.77%;可以获得锌品位50.95%,锌回收率为66.71%的锌精矿,其中银、铅和硫的含量分别为801.41g/t、0.44%和33.25%。试验指标比较理想。     

A New Strategy for Preparation of NiAl Bronze/Zn Composite by Friction Stir Processing

In this work, we successfully prepared a NAB/Zn composite using Zn wires by friction stir processing (FSP). During FSP, Zn-containing α matrix and (Fe, Ni)Al phases and nano α and CuZn grains with the size of less than 10 nm are formed on the top surface. The average microhardness of the composite is increased by 15 pct compared with the alloy without Zn, which originates from fine grains, CuZn particles strengthening, and more β′ phase.

     

一种具有选相控制功能的智能终端研究与实现

智能终端是智能变电站自动化系统过程层的重要设备。选相控制技术是解决高压断路器投切负载瞬时电磁效应的有效措施。本文将二者有机融合,提出了一种具有选相控制功能的智能终端的实现方案。简单介绍了选相控制技术的基本原理,对所提方案设计需求进行了简要分析,并对该方案主要部分的实现进行了深入研究和详细阐述。通过对样机试验验证,该新型智能终端既能作为常规智能终端使用,又能提供良好的选相控制功能,具有较强的实用性。     

大厚度临氢Cr-Mo钢在辊式淬火线生产工艺的开发与应用

根据舞钢300 mm厚板辊式淬火线工艺特点,结合以往采用淬火槽生产大厚度临氢Cr-Mo钢的经验及其性能要求,对钢板成分设计和正火加速冷却过程关键工艺参数进行研究,确定了大厚度临氢Cr-Mo钢板在舞钢300 mm厚板淬火线合适的正火加速冷却工艺,成功实现了大厚度临氢Cr-Mo钢板的批量生产.检验结果表明:由300 mm厚板辊式淬火线生产的大厚度临氢Cr-Mo钢板,力学性能稳定,完全满足严格的使用要求,同时板型控制效果良好,在国内临氢压力容器制造领域得到广泛应用.