催化分馏塔HTV塔板的应用

ＨＴＶ船型浮阀塔板是适用于常压和加压条件下精馏和吸收塔中的优秀塔板，该塔板首次成功地应用于华北油田化学药剂厂催化裂化主分馏塔的技术改造中。应用结果表明，该塔板具有适用范围广、操作弹性大、塔板压降低、可提高处理量、改善产品质量等优点。     

Mechanism of human immunodeficiency virus type I entry into the target cells

Based on the recent advances of the research on the mechanism of HIV-1 infection, a novel model to elucidate the mechanism of HIV entry into the target cells is proposed and the perspective about the putative receptor is discussed in this review. Understanding of the crystal structure of HIV-1 transmembrane protein gp41 and the functions of HIV-1 receptor, co-receptor and the putative receptor will lead to developing effective HIV vaccine and anti-HIV drugs.     

多酸药物研究进展

简要介绍了多酸、多酸结构类型、多酸药物的研究内容与研究意义;回顾了近代多酸药物研究的历史;对抗HIV、抗肿瘤多酸药物的研究,从代表性药物的发现、机理研究到构效关系等方面作了重点评述;指出了未来多酸药物研究工作的主要领域。     

PREPARATION OF HIGH-TEMPERATURE VULCANIZED SILICONE RUBBER OF EXCELLENT MECHANICAL AND OPTICAL PROPERTIES USING HYDROPHOBIC NANO SILICA SOL AS REINFORCEMENT

Hydrophobic nano silica sol(HNSS)was incorporated into polyvinylmethylsiloxane to prepare reinforced high- temperature vulcanized(HTV)silicone rubber.HTV silicone rubber filled with 40 phr HNSS showed excellent mechanical and optical properties:the tensile strength reached 11.7 MPa and the optical transmittance was higher than 90%.Possible reasons for reinforcement and transparency were discussed on the basis of the bound rubber percentage,total crosslink density,and SEM analysis.Our work suggests that H...