官地水电站围堰塑性防渗墙的混凝土配合比设计

对官地水电站围堰塑性防渗墙混凝土进行了配合比设计及力学性能和变形性能的试验研究.试验研究的结果表明:按照本文所推荐的配合比可以配制满足电站围堰设计要求的塑性防渗墙混凝土.     

瞬变响应技术及其在甲烷部分氧化反应中的应用

介绍了瞬变响应技术的基本原理及其在非均相催化反应中的应用,尤其分析了该技术在甲烷部分氧化反应中的应用,并指出了瞬变响应技术的研究现状和应用前景。     

Prediction model of the radiation from ground surface to the occupant in outdoor space

The outdoor ground radiation including the emitted radiation and reflected radiation plays an important role in the outdoor thermal environment. In this paper, based on the hypothesis of that the occupant body can be equivalent to a human cylinder and the outdoor ground surface is diffusive for radiation, a mathematical model is advanced to describe the radiation from the ground surface to the occupant. Through theoretical analysis of the mathematical model, general formulas for calculating the radiation arriving at the occupant from an annular ground surface and infinite ground surface are obtained. It shows that, the radiation from ground surface to the occupant depends on the surface temperature, reflectivity and emissivity, the arrange within the radius of 8.0m encircling the occupant can be defined as the dominant radiating area which radiates 90% radiation to the occupant. The radiative potentials of different pavement surface such grass, asphalt concrete surface, granite slab surface, terracotta bricks, colored concrete interlocking blocks are also compared with the datum measured by Tan Slew-Ann and Fwa Tien-Fang in Singapore, it shows that, in the summer sunny day, grass surface radiates more radiation in the morning but less in the afternoon than other pavement materials. Finally, discussions of reducing the radiation of outdoor ground surface are presented and main conclusions are drawn for improving the outdoor thermal environment.     

PCI目标接口芯片的总体设计

介绍PCI目标接口芯片的总体设计。为PCI接口芯片的大规模ASIC设计奠定了基础。     

郑家冲水库大坝安全鉴定分析

在长期复杂的自然环境条件和各种荷载作用下,土石坝容易产生安全隐患.尤其国内早期修建的土石坝,因为设计考虑不周、施工质量差、运行管理不当,大坝安全受到严重影响.本文结合湖北省黄冈市红安县郑家冲水库工程实例,从水库的工程地质、防洪标准、运行管理、工程质量、渗流安全及结构安全等主要方面,对该水库工程的安全性进行全面复核和评价,对大坝结构、渗流稳定等做了详细的分析和论证.     

AutoCADObjectARX中实体B—REP的数据结构

本文通过对AutoCAD中实体模型的边界表示法（B－REP）演变的论述，给出了ObjectARX中实体的半边数据结构。     

大曲率半径球面栅网加工工艺

讲述采用栅网光刻-成形球面-翻边一定型工艺解决了带翻边球冠形栅网加工的问题,与常规电火花加工栅网方法相比,该方法具有省时、高效、低成本的特点.     

Prototype of highly efficient liquid electrode pulsating corona plasma reactor for degradation of organics in water

Prototype of atmospheric pressure non-thermal corona plasma reactor, developed for degradation of organics in water, operates at significantly higher frequency than other reactors for that purpose, and without sparks. Its construction provides the umbrella shaped, sustained pulsating corona discharge, with defined discharge oscillations on a given pulse frequency above the water surface. Dye degradation rate decreases with the decrease of discharge current density. Plasmaformed H_2O_2 is consumed in dye degradation. The energy yield of dye degradation is 2.45 g k Wh~(-1) for 50 ppm solution, which is higher than in other publications for comparable experimental conditions.     

模糊神经网络控制的智能防摔监控系统

基于模糊神经网络控制的智能防摔监控系统是一套通过神经网络信息采集的智能防摔系统。该系统通过神经信息的收集在后台经过大数据分析,判断出是否会发生摔倒可能,进而预警和保证老人的安全。该系统主要用于老年养护中心以及大型疗养院。     

校准短型廉金属热电偶相关问题的研究

短型廉金属热电偶是一类电极长度较短的可拆卸式廉金属热电偶和廉金属铠装偶的统称。传统的测量设备和测量方法在高温温区往往无法准确测量其示值偏差。通过实验找到其测不准的原因,设计研发接线端恒温器解决这一问题,降低了短型偶示值偏差的扩展不确定度。