具有公共对称面的两个二次回转面的相贯线

本文论述了常见的两个二次回转面轴线相交和平等时,其相贯线在公共对称面（投影面）的投影分别为双曲线和抛物线,只有在特殊情况下是直线,椭圆和圆,并举例说明在计算机上绘图的方法。     

小麦耐盐细胞系脯氨酸SOD酶核酸和蛋白质合成动态分析

对已筛选出的小麦耐盐细胞系的耐盐稳定性进行有关生理、生化分析。结果表明：耐盐细胞系脯氨酸含量不仅稳定,而且高于对照;ＳＯＤ活性在耐盐系增加,耐盐系对一定的盐浓度损伤ＤＮＡ修复能力大于对照系,耐盐系ＲＮＡ和蛋白质合成量分别是对照的５．４和４．５倍,并对小麦耐盐性的有关问题进行了讨论。     

锗钨酸分子间化合物的合成和结构研究

以锗钨酸和4-甲基吡啶为原料合成了分子间化合物H₄GeW₁₂O₄₀·5C₆H₇N·CH₃CN。单晶X-射线分析表明，属正交晶系，空间群P2₁2₁2₁, 晶胞参数a=13.533(5),b=20.835(5), c=21.859(7)?，V=6164(3)?³。Dc=3.650 Mg/m³, Z=4。对3934个可观察到的衍射点进行全矩阵最小二乘法修正后，可靠性因子R=0.0534。     

硅酸及其盐的研究 ⅩⅩⅠ.三甲基硅烷化-气相色谱法测定单硅酸的离解常数

单硅酸的离解常数是表征其基本性质的重要数据,前人已有不少工作,但由于测定的方法和实验条件不同,所得数据很不一致。     

流动注射分光光度法测定水体总磷

提出了一种单通道紫外消解流动注射比色分析法，能快速测定水样中总磷。实验采用了微量恒流混合泵、新型的细长型高灵敏度流通池及紫外消解器、液流分配阀、恒流瓶等FIA装置，并使用工业编程控制器和智能触摸屏进行控制和计算，使操作更为方便。此法分析时间短，测量范围宽，精度高，适合于各种水体的测定。     

Self-repairing polymers: poly(dioxaborolane)s containing trigonal planar boron

The molecular weight of poly(dioxaborolane)s can be controlled during the polymerization reaction or through post-polymerization processing in such a manner that hydrolytic damage to these materials may be repaired, thereby regenerating the polymer.     

尼龙—6／丙烯酸接枝膜的结构与性能

应用ＩＲ确定了尼龙－６与丙烯酸接枝反应的接枝点位于尼龙大分子酰胺键的Ｎ原子上，用Ｘ射线衍射研究了接枝膜的结晶状况，探讨了接枝率对接枝膜的电阻、离子交换容量、强度等性能的影响．     

Electronic structure and intrinsic redox properties of [2Fe-2S]+ clusters with tri- and tetracoordinate iron sites

Using potentially bidentate ligands (-SC2H4NH2), we produced [2Fe-2S]+ species of different coordination geometries by fission of [4Fe-4S]2+ complexes. Even though the ligands are monodentate in the cubane complexes, both mono- and bidentate complexes were observed in the [2Fe] fission products through self-assembly because of the high reactivity of the tricoordinate iron sites. The electronic structure of the [2Fe] species was probed using photoelectron spectroscopy and density functional calculations. It was found that tetracoordination significantly decreases the electron binding energies of the [2Fe] complexes, thus increasing the reducing capability of the [2Fe-2S]+ clusters.