水生生物环境诊断(AOD)技术应用研究

介绍一种新型的毒性试验方法——水生生物环境诊断(AOD)技术，该方法将冷冻浓缩和生物测试技术有机地相结合，较好地解决了低毒性水体的毒性测试问题。应用本项技术以红鳍鱼为受试生物，分别对湖北武汉马伧湖、墨水湖、广东深圳河、长江干流寸滩等几个断面、丹江口水库白河、丹江河口、老灌河等不同水体进行AOD测试，所得48hr-LC\-50结果与实际水质状况基本相符。     

变温条件下HDPE/CB的正电子湮灭特性

对掺杂了25份（phr）导电炭黑（CB）的样品进行了正电子湮灭寿命谱的变温测量，在玻璃化转变温度以上，随着温度的增加，自由体积的大小线性增加，在玻璃化转变温度以下，自由体积的大小基本不变，o-Ps的强度在－40℃下基本不变，从－40℃以上开始增加，但在50℃以上上升有加快的趋势，与PTC材料的PTC现象和导电性能有一定的关联。     

气敏材料的研究进展

从气敏材料种类，制备方法，改善气敏材料缺陷的手段等方面介绍了气敏材料的研究进展，论述了气敏材料研究中的新动向，展望了它的未来发展。     

透过符号看设计理念

符号设计作为当代设计理念的风格载体,承载着设计者的主观思想与文化观念的表达。文章以符号为本体,分析隐存其中的时代精神、民族文化以及设计个性,阐述设计观念对于当代符号设计的重要性。     

普通碳素钢在CSP连轧过程中的组织演变

在CSP机组上，通过普通碳素钢(Q235)的轧卡试验研究了该钢在连轧过程中的组织演变过程。结果表明：高温区的两道次大变形使原始铸造树枝晶通过再结晶基本实现了奥氏体的等轴化和组织的均匀化；进一步变形可继续细化原始奥氏体并最终获得晶粒尺寸约为30μm的、均匀的等轴晶组织。在CSP工艺中，原始奥氏体组织细化可能与精轧总压下量高、单道次变形量大、应变速率高及钢中出现异常析出物等因素有关。     

Sol-gel Preparation and Preliminary in vitro Evaluation of Fluorapatite／Hydroxyapatite Solid Solution Films

Fluorapatite/hydroxyapatite solid solution has better biological properties than other apatites, especially used as films or coatings. In this work, sol-gel preparation and in vitro behavior of fluorapatite/hydroxyapatite solid solution films on titanium alloy were investigated. Ca(NO3)2-4H20 and PO(OH)x(OEt)3-x were selected as precursors, and hexafluorophosphoric acid (HPFo) was used as a fluorine containing reagent. The Ca and P precursors were mixed with HPFo to keep the Ca/P molar ratio 1.67. The mixtures refluxed for 12 h were used as dipping sols for the preparation of the films. The phase of the films obtained at 600℃ was apatite. The F contents in the films increased with the concentrations of HPF6 in the dipping sols. The solid solution films were shown to have better stability than hydroxyapatite films, and a reasonably good bioactivity in the in vitro evaluation.     

胆甾相液晶的光学特性

基于胆甾相液晶的特殊分子结构，综合阐述了胆甾相液晶的旋光性、选择性光散射和偏振光二色性等光学特性，揭示了它的光学特性主要源于它螺旋状的分子结构及其光学各相异性。     

Recent Progress of HT-7U Superconducting Tokamak

HT-7U is a superconducting tokamak. which is being constructed in Institute of Plasma Physics, Chinese Academy of Sciences. The mission of the HT-7U project is to develop a scientific and engineering basis of the steady state operation of advanced tokamak.The engineering design of the device has been optimized. The R&D program is going on. Short samples of the conductor and a CS model coil were tested. All the TF and PF coils will be manufactured and tested in Institute of Plasma Physics. Therefore, a 600-meter long jacketing line for cable-in-conduit conductors along with two winding machines, a set of VPI equipment and a test facility for the TF and PF coils are ready in ASIPP now. In this paper, the recent progress of the HT-7U is described.     

低位真空预压法在淤泥固结中的应用

东钱湖湖底疏浚吹填试验段工程利用低位真空预压法作用机理，通过现场试验和检测，验证该方法在淤泥固结中的应用效果良好，为今后东钱湖进行大面积清淤积累经验。     

尾翼火箭弹在随机弹道中发生共振可能性仿真研究

以火箭发射系统为研究对象,建立了火箭弹发射动力学模型,进行了数值仿真,分析了火箭发射过程中火箭弹受到的随机因素对火箭弹在随机弹道中发生共振可能性的影响,为减少火箭弹散布提供了设计依据.