CO_2改性水玻璃砂的热强度、高温强度和发气性

研究了CO2改性水玻璃砂的热强度、高温强度和发气性,结果表明,随着粘结剂加入量的增加,热强度、高温强度和发气性增大;粘结剂种类不同,型砂的热强度、高温强度和发气性不同;其中,l#改性树脂改性水玻璃18#的热强度、高温强度均比普通水玻璃高,发气量则小于普通水玻璃;用扫描电镜分别观察了普通和改性水玻璃砂在加热温度为600℃、800℃、1000℃、1200℃时的高温炉内折断断口,解释了改性水玻璃砂比普通水玻璃砂高温强度高的原因。     

拼合的准噶尔盆地基底: 基底火山岩Sr-Nd同位素证据

在详细岩相学、主元素和微量元素研究基础上, 报道了准噶尔盆地基底不同区块火山岩的Sr-Nd同位素和锆石颗粒年龄研究成果, 结合盆地周缘造山带古生代构造史、古生物、沉积建造、火山岩、侵入岩的综合研究成果, 表明准噶尔盆地基底可能由分属哈萨克斯坦板块、塔里木板块(?) 和西伯利亚板块刚性体外围的岛弧体系经构造软碰撞拼合而成, 它们又经历了块体拼合后的构造-岩浆热事件(如基性岩浆底侵作用) 的进一步改造和影响.      

半导体多相光催化氧化技术在环境保护中的应用研究进展

简单介绍了半导体多相光催化氧化的原理及其在降解污染物和环境保护中的应用和一些新型反应装置, 提出了提高光催化剂催化活性的方法, 讨论了影响光催化氧化反应速率的因素和提高光催化氧化反应速率的方法, 同时对光催化氧化技术今后的研究方向和工作重点提出了一些设想      

粘土矿物在催化裂化催化剂中的应用

粘土矿物在催化裂化催化剂中的应用表现在三个方面：(1)在无定形硅铝凝胶引入之前,活性白土的使用代表着一个历史阶段;(2)层柱粘土的研究是目前国际上活跃的新型催化材料前沿课题之一,层柱蒙脱石的制备研究是当前最有吸引力的研究方向,铝多核羟基金属阳离子或有铝参与的多核羟基双金属阳离子柱化剂的研究制备是当前主要研究课题,并有从制备单一铝多核羟 基聚合金属阳离子柱化剂向制备铝和其它元素的多核羟基聚合金属阳离子柱化剂的方向发展的趋势;(3 )在寻求新催化剂载体中,伊/蒙间层等矿物的层柱化显得尤为重要,用高岭土作催化裂化催化剂载体,在目前和将来的一段时间内仍将发挥重要作用,高岭土的成因、矿物成分、杂质含量、结构羟基的热稳定性以及物理性质等对催化特性均有影响,并有可能从中寻找到无活性载体。应加强催化剂 载体的矿物学特征与催化特性间的相互关系研究。     

The Great Dun Fell Experiment 1995: an overview

During March and April of 1995 a major international field project was conducted at the UMIST field station site on Great Dun Fell in Cumbria, Northern England. The hill cap cloud which frequently envelopes this site was used as a natural flow through reactor to examine the sensitivity of the cloud microphysics to the aerosol entering the cloud and also to investigate the effects of the cloud in changing the aerosol size distribution, chemical composition and associated optical properties. To investigate these processes, detailed measurements of the cloud water chemistry (including the chemistry of sulphur compounds, organic and inorganic oxidised nitrogen and ammonia), cloud microphysics and properties of the aerosol and trace gas concentrations upwind and downwind of the cap cloud were undertaken. It was found that the cloud droplet number was generally strongly correlated to aerosol number concentration, with up to 2000 activated droplets cm⁻³ being observed in the most polluted conditions. In such conditions it was inferred that hygroscopic organic compounds were important in the activation process. Often, the size distribution of the aerosol was substantially modified by the cloud processing, largely due to the aqueous phase oxidation of S(IV) to sulphate by hydrogen peroxide, but also through the uptake and fixing of gas phase nitric acid as nitrate, increasing the calculated optical scattering of the aerosol substantially (by up to 24%). New particle formation was also observed in the ultrafine aerosol mode (at about 5 nm) downwind of the cap cloud, particularly in conditions of low total aerosol surface area and in the presence of ammonia and HCl gases. This was seen to occur at night as well as during the day via a mechanism which is not yet understood. The implications of these results for parameterising aerosol growth in Global Climate Models are explored.     

人工影响降雨再分配初步探讨

采用统计方法和数值模拟方法探讨人工影响后降水再分配和对局地降雨影响的可能性,统计结果表明：人工降雨影响了降水的自然分砷,在作业点下风方出现了二个影响区：一个是增雨区（出现在作业点下风方１５～５０ｋｍ）另一个是减雨区（出现在作业点下风方９０～１５０ｋｍ）数值模拟结果表明,人工催化影响降水演变过程,而且改变了降水的分布,通过人为有意识的影响,有可能达到调控降水,减弱局地降雨的目的。     

青海省人工影响天气综合指挥系统

应用气象常规资料和卫星云图、雷达等多种现代观测技术建立人工增雨，防雹作业微机决策系统。在作业的有利天气系统，云系条件，作业时机，作业高度选择等方面对各种要素进行优化处理，实现了作业指挥定量化，客观化。该文主要介绍了该系统建立的思路，结构，及各子系统的特点和功能。     

Model Simplification and Parameter Modification for Offshore Platforms Using Experiment Data

- In this paper, a computation method has been developed so as to compare the finite element method (FEM) with the test results directly. The structure is divided into the "master" and "slave" degrees of freedom. The simplified model can be obtained with modal reduction. Then the design sensitivity analysis of the eigenvalues and eigenvectors has been carried out using the modal frequency and modal shape of the test. A two-story frame structure and a jacket model structure have been calculated. Meanwhile, the modified coefficient, the FEM computational and experimental values have been given. It has been shown that the FEM model modified using the test modal value is efficient.     

新疆巴里坤膨润土改性提纯试验

以新疆巴里坤膨润土矿三个样品为原料，进行膨润土改性提纯试验的研究，结果表明，改性提纯后蒙脱石含量为87％～95％，采用洗涤去除石盐后悬浮液加热法更适用于样品的改性。通过离心机转速和分散剂对提纯效果影响的实验，得出离心提纯时采用离心机转速为2100r／min、分散剂采用六偏磷酸钠和水玻璃以质量比为1：1混合使用，提纯效果最佳，为新疆巴里坤膨润土的深加工奠定基础。     

人工影响天气高炮（火箭）作业空域自动化申报系统

为解决高炮(火箭)人工影响天气电话申报空域存在的时效性差、人力劳动量大和易出现失误等问题,研究开发了河南省人工影响天气高炮(火箭)作业空域自动化申报系统。该系统充分利用气象基本业务通讯网络,以数据库为核心,采用客户机/服务器(Client/Server)模式,实现了用计算机处理作业空域申报和批复等实时信息,并具有自动保存作业空域申报和批复信息以及保存作业点的作业信息和作业效果信息等功能。该系统还具有根据天气形势,对适合人工影响天气的作业点进行预警,并优先进行空域申报的功能。文中还对该系统的设计思路进行了拓展,提出了利用该系统实时信息交互功能设计全新模式的高炮(火箭)人工影响天气业务技术系统的思路。