曝气生物流化床处理炼油厂含硫和高氨氮污水的研究

炼油厂含硫污水因含高浓度的油、COD、硫化物及挥发酚而难于生化降解，催化剂生产中排放的污水因含高浓度的氨氮、盐类、悬浮物质以及低浓度的有机物而成为水处理的难题．本文采用一种曝气生物流化床（ABFT）工艺，对含硫污水和催化剂高氨氮污水的混合污水进行了现场连续试验，结果表明：在混合污水COD为2090mg／L、氨氮为600mg／L、挥发酚为27mg／L和硫化物为154mg／L的情况下，ABFT系统出水COD为95mg／L、氨氮为4．0mg／L、挥发酚为0．30mg／L和硫化物为0．0067mg／L，出水达到了国家污水排放标准一级标准．在处理工艺中，动态氧化和混凝沉淀作为预处理，ABFT反应器采用了合成高分子载体固定化微生物技术，该载体具有大孔网状以及优良的机械强度和化学性能，高效微生物B350通过化学键固定在载体上．克氏定氮法表明，ABFT中生物负载量为32mg／L．试验结果显示：在处理高氨氮污水方面，ABFT工艺比SBR工艺具有更强的优势，同时，ABFT系统具有较高的处理效率和耐冲击负荷能力．     

A complete sequence and comparative analysis of a SARS-associated virus(Isolate BJ01)

Severe Acute Respiratory Syndrome (SARS) is a newly identified infectious disease[1—5]. The global outbreak of SARS has been threatening the health of people worldwide and has killed 353 people and infected more than 5462 in 27 countries, as reported by WHO on April 29, 2003 (http://www.who.int/csr/sarscountry/en). Although it has been recognized that a variant of virus from the family of coronavirus might be the candidate pathogen of SARS[1—5], its identity as the unique pathogen sti…     

Progress in the study of tectophysicochemistry

Tectophysicochemistry is a research area that deals with the interrelations between physical and chemical changes of crustal materials caused by tectonism. A given tectonic force may be resolved into two parts: homogeneous stress and differential stress. Homogeneous stress refers to isotopic pressure, which is superimposed on the original pressure and affects the equilibrium of various chemical reactions. It is also a factor that influences petrogenesis,metallogenesis and metamorphism. Differential stress is commonly produced when external forces act on a given solid body. It may cause deformation of crustal materials and generate various kinds of structural features. Tectophysicochemistry pays special attention to pressure, temperature and other physicochemical conditions produced or induced by tectonism and studies the influences of additional tectonic parameters on various chemical equilibria, so it gradually develops into an independent area of science.     

A carbon- and oxygen-isotope record of recent environ- mental change from Qinghai Lake, NE Tibetan Plateau

An understanding of natural climatic variability is essential for evaluating anthropogenic impacts on recent and future climate[1—3]. Due to the lack of lengthy instrumental records, such an understanding must be gained from natural archives of climate change. Palaeolimnological indicators of past lake levels may provide a sensitive record of changes in effective precipitation in closed basins. This approach is particularly relevant on the Tibetan Plateau, where instrumental records are very…     

泥石流危险性动量分区方法与应用

运用泥石流运动数值模拟和GIS相结合的方法模拟泥石流出山口后的运动全过程, 求得泥石流流速和流深分布, 确定泥石流过程中泛滥范围内任一点的最大动量, 建立了泥石流危险性动量分区模型Z = Khv. 根据考察和实验资料对委内瑞拉首都加拉加斯的Chacaito沟百年一遇泥石流运动过程进行了模拟, 利用动量分区方法划分出泥石流危险区.     

285℃条件下伊/蒙混层矿物的存在及其意义——新西兰现代活动地热区的研究

长期以来认为,蒙皂石的伊利石化程度主要受温度控制,伊/蒙混层矿物被广泛用作矿物地质温度计。作者在对新西兰Kawerau现代活动地热区进行有关粘土矿物水/岩反应的     

杂多酸荷移跃迁盐系列研究（Ⅱ）──Dawson－Wells结构杂多酸的荷移跃迁盐的合成和表征

合成了三种通式为（ＥＴ）１１［Ｐ２Ｍ１８Ｏ６２］，（Ｍ＝Ｍｏ，Ｗ或Ｎｂ）的Ｄａｗｓｏｎｗｅｌｌｓ结构杂多荷移跃迁盐．用元素分析，ＩＲ，Ｕｖ－ｖｉｓ，３１ＰＮＭＲ、ＥＰＲ、磁化率和电导率等物理测试手段进行了表征和性质研究，显示具有不同的磁行为．     

从高放废液中去除超铀元素的TRPO流程热实验

阐述了从高放废液中去除超铀元素的ＴＲＰＯ流程热实验。热实验是用真实动力堆的 高放液进行的，取得了很好的效果。超铀元素镅、镎、钚和铀的去污系数分别大于 ３ ０００，４ ０００， ９５０和 ７ ０００。 ＴＲＰＯ流程在去除超铀元素的同时，还能去除对放射性废物长期危害起决定作用 的９９Ｔｃ。实验结果表明ＴＲＰＯ流程具有去污效率高，反萃效果好，锕系组分之间交叉污染小和试 剂成本低等诸多优点。ＴＲＰＯ流程是一个有效的从高放废液中去除超铀元素的流程。     

用于信息安全的光学技术与数字技术

信息安全性牵涉的范围很广，从国防到我们的实际生活各个方面。本书的内容可以应用于安全、验证、识别、跟踪、鉴定。涉及光学科学与工程、数字图像处理、成像技术、基于计算机的信息系统、传感器、检测器和生物测量中各种不同的专门知识，本书的作者是这个领域的国际上公认的杰出人士，书中汇集了该领域最近的关键性突破。