K—半分层空间是闭映射的不变量

本文证明了：若Ｘ是Ｋ－半分层空间，ｆ是闭映射，则ｆ（Ｘ）是Ｋ－半分层空间，这一结果推广改进了Ｌｕｔｚｅｒ与高国士的有关结果。     

“926”植物生长调节剂的药效作用及机理研究

试验表明，“９２６”植物生长调节剂对植物种子活力、根系活力、植物生长发育具有明显的促进作用。用“９２６”浸稻种和玉米种，可提高发芽势、发芽率，增加次生根数和次生根长。苗期施药，同样可促进幼苗生长发育、促进根系发育、增加分蘖、分枝，提高成穗率。其它生育期施药，可分别提高成稳率、穗粒数、粒重，显著提高作物产量。     

管节点疲劳裂纹扩展规律和寿命估算

对Ｔ型管节点的疲劳试验进行分析，研究疲劳裂纹的扩展规律，用“柔度法”计算应力强度因子范围ΔＫ，确定材料常数ｃ，ｍ，提出并运用“直线－曲线模式法”估算管节点疲劳寿命，结果与试验吻合，具有一定的实用参考价值。     

光照下meso-四(4-磺基苯基)卟啉(H_2TPPS)形成锌配合物的光-极谱研究

在氨性溶液中,光照射对ZnTPPS的形成影响很大。光-极谱试验表明:光电流(i_p)与浓度(c)间有以下的关系:对Zn(NH_3)_4~(2+),i_p∝C_((Zn)(NH_3)_4)~(2+)_~(1/2),对H_2TPPS,i_p∝C_(H_2TPPS),ZnTPPS络合物还原波的i_p不明显。本文对其差异性和光电流产生的原因做了初步探讨。     

浅谈软弱地基的施工技术

用级配砂石垫层换填处理薄层软土地基是一种经济实用的方法。介绍了用级配砂石垫层处理软弱地基的设计方法、施工要点及其质量检测办法。     

基于Oracle Spatial的WEBGIS数据模型构造

结合WEBGIS的特征,提出了满足WEBGIS实际性能要求,便于实际实施的一种空间数据模型结构实例,解决了WEBGIS与Oracle Spatial无缝连接的问题。     

Fundamental reactions in TiO2 nanocrystallite aqueous solutions studied by pulse radiolysis

Reactions of the hydrated electron, H atoms, 2-propanol, and methanol radicals with the TiO₂ nano-particles have been studied either directly or by competition kinetics. The radicals were produced by radiolysis of 2-propanol, t-butanol, or methanol aqueous solutions in acid pH's. The reactions involve electron injection to the conduction band. As expected, the t-butanol radical is inert towards TiO₂ under our conditions, while the other reducing radicals react with TiO₂. The reactivity decreases in the order: e_aq⁻>H>CH₃COHCH₃>CH₂OH. Two TiO₂ nanocrystallite sizes, with average diameters of 1.0 and 4.7 nm were compared. For equal concentrations (in terms of TiO₂ molecules), the rate of electron injection shows relatively little dependency on particle size. The rates of interfacial electron transfer and transfer coefficient are also reported.     

草酸生产水洗塔设计

对目前国内合成法生产草酸所用水洗塔,采用加大水量到50m~3/h,提高塔板开孔率到19.55%(一般推荐6%～12%),降低溢流堰高为25mm,增大降液管到下层塔板间距为95mm 的办法,使洗涤后的气体达到要求。     

苯乙烯基取代的缩杂环卓酮化合物的合成

探讨了３－肉桂酰基酚酮及其亲电取代产物与盐酸羟氨和盐酸苯肼的反应，合成了１０个苯乙烯基取代的缩杂环酮新化合物，并用元素分析及光谱分析证实了它们的结构。     

Complexes in polymers IV. FTIR microscopic characterization of thin organic polymer films containing embedded transition-metal carbonyl complexes

Thin films of polystyrene (PS), poly(methyl methacrylate) (PMMA) and polystyrene-polyacrylonitrile copolymer (PS-AN), containing various embedded transition-metal complexes, have been studied by FTIR microscopy. The spatial distributions of the transition-metal carbonyl complexes throughout the thin organic polymer films have been determined by a two-dimensional IR mapping procedure. The spectral variations observed in the distribution of the metal carbonyls throughout the different polymer films are discussed. The IR data show that the technique used to prepare the organometallic-embedded thin films (viz. freeze-drying of solutions followed by hot mechanical pressing of the residues) does in general lead to homogeneous films which may eventually find industrial application, e.g. as membrane sensors for small molecules.