The catalytic esterification properties of PVA membranes filled with ironic sulfate

［中文文摘］通过在PVA膜中掺杂硫酸铁制得兼备催化和分离功能的酯化膜反应器 ,并用IR、DSC及SEM等测试方法分析了膜的形态结构及组成。实验结果表明 :硫酸铁的加入对膜的渗透性能和酯化反应的选择性及转化率的提高有重要作用 ;对于乙酸 /乙醇酯化反应体系 ,适宜的填充量为 2 0 %～ 30 % (质量比 )。［英文文摘］The membranes with both catalytic and separative properties were made by using the　hydrophilic alcohol (PVA) filled Lewis acid Ironic sulfate. The chemical composition , physical structure and morphology were studied by a variety of techniques , including infrared　spectrometry( IR) , differential scanning calorimeter (DSC) and scanning electron microscopy (SEM) etc. The experimental results showed that the addition of Fe3 (SO4) 2 was inportant to improve the flux of the membrane flux and the yield and selection of the esterification reac2tion , and the appropriate cotent of Fe3 (SO4) 2 for the alcohol/ acid esterification was 20 %～30 %(w/ w) .福建省自然科学基金 (C991 0 0 0 3) ；教育部骨干教师基金；教育部重点科技项目；教育部留学回国人员启动费资助

RELATIONSHIP BETWEEN ELNINO PHENOMENON AND THE CATCH of TRICHIURUS HAUMELA IN ofFSHORE WATERS of ZHEJIANG PROVINCE IN WINTER

对浙江近海1961~1982年冬汛带鱼渔获量变化与ElnIn的关系，结合捕捞力度进行综合分析，总结出浙江近海冬汛带鱼渔获量变动规律，为合理开发提供有用的信息。Based on the Fishing intensity the relationship between the Elnino phenomenon and the catch of trichiurus haumela in the ofFshore waters of Zhejiang Province in winter is analysed.The variation pattern of the catch of trichiurus huamela in this area in winter is Found, which provides valuable inFormation For rational exploitation of the resources

EFFects of Two Kinds of Antibiotics on the lnductions and DiFFerentiations of Rice Embryo Calli

研究了两种抗生素对水稻种胚愈伤组织诱导和分化的影响。结果表明：供试抗生素卡那霉素（kAnAMyCIn，kM）和氨苄青霉素（AMPICIllIn，AP）对水稻种胚愈伤组织的诱导和生长都发生抑制作用，而kM比AP的抑制作用强。不论诱导期还是分化期用kM50、100Mg/kg处理，除可培养出少量白化苗外，200Mg/kg以上剂量处理的均未能分化出绿苗。仅分化期用AP处理，50~200Mg/kg浓度促进了绿苗分化，但浓度达400Mg/kg时则开始发生抑制作用。诱导期用kM处理的愈伤组织，在分化期其死亡率随浓度的提高而提高。而仅在分化期用kM和AP处理的愈伤组织，虽也有不同程度的致死现象，但数量较少。kM＋AP对愈伤组织的诱导和生长具有累加抑制作用。在分化期处理，AP可部分解除kM对绿苗分化的抑制效应。文中还讨论了kM和AP作为检测是否导入外源基因的适宜浓度。the inductions of rice embryo calli are inhibited by both Kanamycin (Km)and Ampicillin(Ap),two kinds of Antibiotics, moreover, Km is more eFFective than Ap, Callus induction rates are negatively and signiFicantly correlated with Antibiotic concentrations, Antibiotics.especially Km, also inhibit the growth of calli in the induction phase, No any green seedling diFFerentiates with Km treated either in induction phase or in diFFerentiation phase,except that a Few albinoseedlings appear in the treatments of 50 and 100 mg /kgm,DiFFerentiations of green seedlings are promoted by50 to 200 mg /kg of Ap treated in diFFerentiation phase.Callus death rates rise as the increases of Km concentrations treated in induction phase, Treatments withKm and Ap in diFFeren-tiation phase tend to cause the death of calli in varying degrees,but death rates are lower, Km +Ap inhibit coordinately the inductions and diFFerentiations of calli.Ap can partially remove the in-hibition eFFects of Km on diFFerentiation of green seedlings when treated in diFFerentiation phase.Discussions also have been made on the proper concentrations of Km andApused to detect whether the Foreign genes were introduced in

Application of Membrane-Separation Technology

［中文文摘］报道膜分离技术用于垃圾渗沥水、6 -氨基青霉烷酸 (6 - APA)裂解液以及维生素 C发酵液中的分离浓缩过程 ,各项实验均进行了中试放大 ,取得了良好的效果．［英文文摘］This report introduce the applications of membrane separation in landfill leachate treatment and the separation concentration of 6 aminopenicillanic acid and 2 keto L gulonic acid. All experiments were carried out in pilot plant scale and the performances of membranes in the three kinds of feed solutions mentioned above were satisfactory.国家“九五”攻关 (96 - C0 2 - 0 2 - 0 1);教育部重点科技;教育部骨干教师基金;教育部回国人员基金;福建省自然科学基金(C9910003) 资助项目