Ti：LiAlO2新型晶体的结构分析

通过研究提拉法生长的掺杂Ti浓度为0.2at%的LiAlO2晶体吸收光谱,荧光光谱和红外光谱,来分析此新型晶体的结构.分析发现光谱中仅出现了四价Ti离子的196nm的特征吸收峰,用235nm光激发得到384nm的特征发射峰;针对吸收光谱中660-820nm出现的四个弱小吸收峰提出了一个色心模型,从而解释了空气和富Li气氛处理后吸收峰消失的现象;对比纯LiAlO2晶体的红外光谱发现,Ti的掺入仅影响了[AlO4]键强,而[LiO4]及相关键强几乎不变;结合ICP测试估算出直径50mm,厚1mm的Ti：LiA

Anti HIV-1 agents 5: Synthesis and anti-HIV-1 activity of some N-arylsulfonyl-3-acetylindoles in vitro

In continuation of our program aimed at the discovery and development of compounds with superior anti-human immunodeficiency virus type 1 (HIV-1) activity, 21N-arylsulfonyl-3-acetylindole analogs (2a-u) were synthesized and preliminarily evaluated as HIV-1 inhibitors in vitro. Among of all the analogs, several compounds exhibited significant anti-HIV-1 activity, especially N-phenylsulfonyl-3-acetyl-6-methylindole (2j) and N-(p-ethyl)phenylsulfonyl-3-acetyl-6-methylindole (2n) showed the most potent anti-HIV-1 activity with EC50 values of 0.36 and 0.13 mu g/mL, and TI values of >555.55 and 791.85, respectively. It demonstrated that introduction of the acetyl group at the 3-position of N-arylsulfonyl-6-methylindoles could generally lead to the more potent analogs. (C) 2010 Elsevier Ltd. All rights reserved.

大珠母贝精子介导外源基因转移研究

将大珠母贝(PinctadamaximaJameson)精子与“全鱼”GH基因重组体pCAgcGH和pCAgcGHc的线性DNA混合,温育30min,经6次、27、10kV脉冲电处理后,与卵子受精,得到若干贝苗。从贝苗中提取DNA,经PCR扩增和Southernblot分子杂交表明,部分受体带有外源基因,当与精子温育的外源基因浓度分别为2μg/mL,6μg/mL及18μg/mL时,相应贝苗携带外源基因比率分别为56%,20%和50%。即在此范围内,基因转移的阳性率与外源基因的浓度呈正相关。

在高低温工作条件下对光电器件进行测试的装置和方法

本发明公开了一种在高低温工作条件下对光电器件进行测试的装置，该装置包括:一导温密封腔，用于容置待检测光电器件，具有一光窗口，用于被检测光电器件的光输出或光输入;一支架，该导温密封腔固定于该支架的顶端;一托架，设置于该支架的下端，可沿支架上下移动;一加热或冷却设备，固定于该托架上，随托架一起沿支架上下移动，用于对导温密封腔进行加热或冷却，实现高低温工作条件。本发明提供的在高低温工作条件下对光电器件进行测试的装置和方法，解决了在高低温工作条件下窄脉宽光发射器件和微光光电探测器件参数测试的短线电连接问题，既保证了规定高低温工作环境温度的准确和稳定，又解决了短连线信号输入输出要求、结霜短路和结霜挡光等问题，且结构简单，造价低廉，具有很高的应用价值。

Preparation of polymer/silica nanoscale hybrids through sol-gel method involving emulsion polymers. II. Poly(ethyl acrylate)/SiO2

Poly(ethyl acrylate) (PEA)/SiO2 hybrids with different compositions were prepared under different casting temperatures and pH values. Their morphology as investigated by transmission electron microscopy (TEM) shows that samples with different compositions have different morphologies. When the SiO2 content is lower, PEA is the continuous phase and SiO2 is the dispersed phase. At higher SiO2 content, the change in phase morphology takes place, nd PEA gradually dispersing in the form of latex particles in SiO2 matrix. Change in phase morphology depends mainly on the time the sol-gel transition occurs. At suitable casting temperature and pH value, PEA/SiO2 in 95/5 and 50/50 hybrids with even dispersion was obtained.

两种催化裂化催化剂载体的矿物学特性研究－高岭土和酸活化水黑云母

通过对贵州大方高岭土（GZK-1）、苏州高岭土（JSK）、新疆伊宁高岭土（XJK-6）和新疆尉犁水黑云母及其酸活化处理样矿物学特征的系统研究，得出如下讨论：（1）GZK-1、JSK、和XJK-6的微活指数依次为 29%, 13%和0%，在微活指数上埃洛石＞高岭石＞地开石；（2）高岭土的微活指数仅与杂质铁(Fe_2O_3+FeO)的含量有一定的正相关关系；（3）高岭土的微活指数与其孔体积和比表面积有正相关关系；（4）高岭土的微活指数主要与矿物成分有关，其结构羟基的特性是活性的根源；（5）XJK-6的比表面积小(9 m~2/g)、孔体积小(0.026 ml/g)、大孔多、热稳定性好、几乎无活性；（6）在一定的实验条件下，可获得即具大的比表面积、孔径和孔体积，又尽可能保持原有晶体结构的酸活化产物；（7）活化样品中K_2O、Fe_2O_3、MgO的含量可指示其比表面积的变化；（8）水黑云母含金云母晶层的矿物晶体结构决定了其比蛭石晶层耐酸腐蚀，在较为苛刻的条件下金云母晶层仍然保持；（9）酸活化产物的特点：结构中含一定量的镁；Na_2O含量低，K_2O的含量高；比表面积大(130 m~2/g)；孔体积高(0.119 ml/g)，中孔多；微活指数低 (4.7%).