填料式浮选柱操作参数的研究

在实验室装置上研究了不锈钢波纹板填料柱的主要操作参数对除油率的影响。研究结果表明：填料可以明显改善气体在柱内的径向分布，可以明显提高浮选柱的操作稳定性。实验确定了波纹板填料式浮选柱的主要操作参数是：最低气体表现线速度3．8cm／s，污水停留时间为5min，浮选剂投加量为5～10mg／L。     

1996年2月3日云南丽江7.0级地震震害调查和损失评估

对1996年2月3日云南丽江7．0级地震进行了震害调查和损失评估，此次地震造成了重大灾害，死亡309人，重伤4070人，轻伤12987人。房屋破坏、室内财产和生命线工程的直接经济损失总计为30．49亿元。     

新疆伽师6级强震群综述

本文对伽师成丛发生强震的机因，伽师地震的预报以及地震灾害损失与应力场状态等给出了结果。并就伽师地区防震减灾对策和重建问题提出了讨论及具体对策意见。     

燃煤锅炉排烟脱硫技术

本文介绍了治理燃煤排烟除脱ＳＯ２的主要技术和工艺流程，并对其进行了比较。     

气象卫星遥感在干旱监测中的应用

本文根据ＮＯＡＡ极轨气象卫星ＡＶＨＲＲ资料计算生成植被指数相对距平图用于旱情监测，并在江苏省１９９４年特大干旱中进行了应用服务     

从废感光胶片中回收银

研究了以Fe3 -乙二胺四乙酸二钠-N a2S2O3体系为浸取剂从废感光胶片中回收银的方法,考察了浸出银的最佳工艺条件。实验表明,当浸取剂中FeC l3.6H2O质量浓度为35g/L、N a2S2O3.5H2O质量浓度为150g/L、pH为7、固液质量比为3∶10时,浸取剂可重复使用6次,胶片上银的浸出率可达99%以上;浸取液中的银采用硼氢化钠还原回收,粗银粉配以熔剂高温熔炼可得到纯度达99.78%的银,银回收率达96.88%,回收银后的浸取液可循环使用。     

从弱势群体入手增强安全理念

在2005年全国火灾分析报告中,有一个火灾特点十分引人关注,从火灾死亡情况看,老弱病残和流动务工人员等弱势群体所占比例居高不下.在很多地区,60岁以上老人、10岁以下儿童、伤残智障人员和进城就业的农民工占火灾死亡总人数的80%以上.     

电化学技术在环保领域的应用

详细介绍了电化学技术的各种类型，并综述了电化学技术在环保领域的研究、应用及发展状况。     

A Parallel Study of SAR Levels in Head Tissues for Three Antennas Used in Cellular Telephones: Monopole, Helix and Patch

Summary This paper is a comparative study of several antennas commonly used in cellular telephones. These include a monopole, a helix-monopole and a patch antenna. Each one of these structures is modeled and numerically tested using finite-difference time-domain simulation and human models based on magnetic-resonance images, which allow for inclusion of details of the human body in the simulation. The testing procedure involves antenna simulation in the proximity of the human head. The behavior of each antenna is evaluated for variable distances from the head geometry (0, 1, 2, 4, 8 and 16 mm). Continuous waveform, representative of the sources used in mobile telephones, (250 mW, 1.8 GHz) is used as the form of the antenna excitation. The simulation outputs used as measures for this comparative study include transmitting and receiving antenna characteristics and the specific absorption rate (SAR). The SAR levels for the head tissues are calculated for and with accordance to the two currently accepted standards: Federal Communications Commission (FCC) and International Commission on Non-Ionizing Radiation Protection (ICNIRP). The computed SAR levels within each of the considered tissues vary for the three antennas under investigation and are within the determined health safety standards. Results suggest that the patch antenna may be the structure of choice when considering safety standards, as its radiation yields the lowest local SAR in the head tissues.