四种负载型Pt／Al2O3重整催化剂性能和表征的研究

以四种不同来源的Ａｌ２Ｏ３为载体，采用相同浓度的Ｈ２ＰｔＣｌ６·６Ｈ２Ｏ水溶液浸渍方法制取了四种Ｐｔ／Ａｌ２Ｏ３催化剂。同时使用程序升温还原技术，程序升温脱附技术以及微型脉冲催化色谱技术对其催化剂性能进行表征。实验结果表明，四种催化剂的ＴＰＲ谱，Ｈ２－ＴＰＤ谱以及正己烷脱氢环化活性和选择性是有差别的。     

Analysis of the Protein Electrophoresis Patterns of Curvularia Lunata in Maize and Immunological Detection of the Pathogenic Culture

Twelve isolates of Curvularia lunata and six related species from maize or other host plants are examined for the analysis of polyacrylamide gel electrophoresis (SDS-PAGE) patterns of their soluble proteins,Differences exist significantly among different species and the same species.There is a special protein band for Curvularia at relative mobility value 0.177(Rf 0.177) and a special protein band for C.lunata at Rf 0.225,Two kinds of rpimary antibodies to C.lunata are used to indirect ELISA and Avidin-Biotion-peroxidase Complex(ABC) immunoassay to evaluate their detecting sensitivity and specificity,The sensitivity of ABC immuno- assay is higher than indirect ELISA.APAbs to C.lunata is special to C.lunata.     

当前井巷断面优化方法综述

本文对当前国内外的学者所提出的断面优化方法进行综述,从优化思想、技术途径、推广应用的角度分析、记述各种方法的优劣。     

苯乙烯甲基丙烯酸甲酯高温共聚合反应的研究

本文研究了苯乙烯和甲基丙烯酸甲酯的高温共聚合反应。由实验得出,200℃时的共聚合体系(r_1=2.76,r_2=0.35,r_1×r_2=0.97)接近于理想共聚(r_1×r_2=1),还得出,高温条件下二者的共聚合的解聚反应是相当可观的。     

复方肿瘤血管生成抑制因子口服液对小鼠免疫功能的影响

为探讨复方肿瘤血管生成抑制因子口服液（ＣＯＬ－ＴＡＩ）对正常及化疗小鼠免疫功能的影响,应用环磷酰胺（ＣＴＸ）对实验小鼠进行化疗或给实验小鼠以致死量的阿糖胞苷（ＡＲＡ－Ｃ）,然后给小鼠口服ＣＯＬ－ＴＡＩ,比较用药组和对照组之间小鼠腹腔巨噬细胞Ｃ３ｂ受体活性、吞噬功能、淋巴细胞酸性非特异性酯酶和生存时间等免疫指标的影响．结果显示ＣＯＬ－ＴＡＩ可明显提高小鼠腹腔巨噬细胞Ｃ３ｂ受体性活,ＣＯＬ－ＴＡＩ对化疗小鼠的免疫缺损有恢复作用,可提高小鼠巨噬细胞吞噬率和吞噬指数,增加ＡＮＡＥ＋（α－乙酸苯酯酶＋）淋巴细胞百分率;ＣＯＬ－ＴＡＩ可显著延长给阿糖胞苷致死量小鼠的生命（Ｐ＜０．０１）．ＣＯＬ－ＴＡＩ具有增强正常和化疗小鼠特异性和非特异性免疫功能,口服ＣＯＬ－ＴＡＩ可显著提高化疗小鼠的免疫水平．     

焦炭的粒焦反应性

研究了单种煤焦炭和工业配煤焦炭的粒焦反应性、反应后强度与块焦反应性、反应后强度的关系·结果表明:它们之间有良好的相关关系,并且还研究了单种煤焦炭粒焦反应性与煤质、焦炭光学组织、焦炭气孔结构参数等指标间的关系,说明粒焦反应性对煤种区分能力较好·     

AN/VAC/甲基丙烯磺酸钠三元共聚系统竞聚率的测定

根据该AN/VAC/甲基丙烯磺酸钠三元共聚体系特征,提出了该体系竞聚率测定的系统研究方案.根据竞聚率计算的原理,融汇二元共聚和三元共聚的基础理论,建立通用竞聚率计算数学模型,开发竞聚率计算软件,为非常规三元共聚体系竞聚率测定提供了新途径.     

化合物CF3IXY(X,Y=F,Cl,Br,I)成键特性的理论研究

用Gaussian98W程序在HF／STO-3G和B3LYP／6—31G(d)水平上对CF3IXY(X,Y=F,Cl,Br,I)类共10个化合物进行了全优化计算,并计算了它们的键能．对该类化合物的几何结构、成键特性、键能及性质间的关系进行了探讨,进而对该类化合物的反应性及合成其它该类化合物的可能性进行了预测。     

Improved Performance of Sulfonated Polyarylene Ethers for Proton Exchange Membrane Fuel Cell

The proton exchange membrane （PEM） is one of key components in fuel cell system. Its properties are very important in determining PEMFC performance. The membranes presently used in fuel cell are perfluorosulfonic polymaers, such as Nation from Dupont. Although they have high proton conductivity and excellent chemical stability, their too high production cast and methanol permeability lead to failure of fuel cell applica- tion. Therefore, various partially fluorinated and non-fluorinated polymer electrolytes are under development for PEMFC application since one decade. In the middle of non-fluorinated polymer electrolytes, sulfonated poly（arylene ether）s display high thermal stability, good mechanical properties and exceptional resistance to oxidation and acid catalyzed hydrolysis. They have been regarded as well-suited proton exchange membrane candidates for fuel cells.