CaO·Al_2O_3、CaO·2Al_2O_3和CaO·6Al_2O_3水化活性的SCC-DV-X_α方法研究

用量子化学的SCC－DV－Xα方法分别对铝酸盐水泥熟料矿物CaO·Al2O3、CaO·2Al2O3和CaO·6Al2O3的价键结构与水化活性的关系进行了研究．从Ca—O键级、最低空分子轨道与最高占据分子轨道能级差及总能量状态密度等方面解释了以上三种水泥矿物的水化活性依序降低的理论原因．     

氧载体及其除氧应用的研究：Ⅰ.乙二胺—Co配合物的氧合作用

氧载体及其除氧应用的研究Ⅰ．乙二胺┐Ｃｏ配合物的氧合作用王吉德＊王瑶ａ张翼宋启军张含ｂ鹿毅ｃ李新寿（新疆大学化学系乌鲁木齐８３００４６）（ａ新疆进出口商品检验局，ｂ新疆钢铁研究所，ｃ新疆技术监督局）关键词氧载体，乙二胺，钴配合物，氧合作用１９９７－０...     

味精废液中氨基酸的色谱分离研究

本文应用离子交换色谱技术进行了味精废液中氨基酸的分离研究，考虑了树脂种类、温度和洗脱剂等因素对氨基酸分离效果的影响，找出了氨基酸最佳分离条件，并用味精废液进行了验证，结果表明，在此条件下，氨基酸分离效果良好。     

木糖和木糖醇的色谱模型

利用集总模型，以柱床的物料衡算方程式、吸附等温线模型、传质推动力及初始和边界条件组成木糖、木糖醇的色谱模型，用计算机模拟得到柱中液相浓度分布仿真结果。     

池蝶蚌精子形态及其活力

池蝶蚌精子具有子弹形头部及细长均匀鞭毛尾,属鞭毛型。全长为254.91±20.03μm;头部子弹形,长为32.33±2.15μm,宽为16.60±3.29μm;鞭毛细长均匀,长为216.67±19.73μm。为了更好的计算池蝶蚌精子的存活率,本研究采用曙红Y染色的方法,观察了精子在生理盐水、池塘水和蒸馏水中的存活时间及运动方式。结果显示,精子在生理盐水中的存活时间最长,可达6h;其次是蒸馏水,约为4.5h;最短存活时间是在池塘水中,约为4.0h。池蝶蚌精子的主要运动方式有快速直线游动、弧线运动和原地转动3种方式。快速直线游动的精子活力最高,其次是弧线运动,精子活力降低后进行原地转动。研究的结果对池蝶蚌家系的建立起重要作用。     

Hydrothermal synthesis and magnetism of a chromium(III) squarate complex

The Cr2(Sq)2(OH)2·6H2O complex (Sq=squarate), synthesized by a hydrothermal method, was characterized by elemental analysis, i.r. and electronic reflection spectra. The variable-temperature magnetic susceptibility of the complex was measured over the 77–300K range. The magnetic coupling parameter is consistent with an antiferromagnetic exchange model based on the Hamiltonian operator (H^ = -2JS^1S^2, where S1 = S2 = 3/2), giving the antiferromagnetic coupling parameter of 2J = -11.5 cm–1.     

新型电荷转移多金属氧酸盐的合成和红外光谱研究

以4种道森结构的杂多酸和3种芳香杂环化合物为原料合成了11种新型电荷转移多金属氧酸盐，研究了它们的红外光谱。结果表明：杂多酸形成电荷转移盐后，杂多阴离子的结构略有畸变但仍保持道森结构；有机给体和杂多阴离子之间存在电荷转移相互作用。     

含椭圆形夹杂的压电材料平面问题

应用复变函数的Ｆａｂｅｒ级数展开方法，本文研究了含椭圆形夹杂的压电材料平面问题，给出了问题的封闭解·解答表明，椭圆夹杂内的应力、应变、电场强度和电位移均为常量·通过算例，还讨论了正、逆压电效应在基体孔周处的机电行为·     

Integrated magnetic bionanocomposites through nanoparticle-mediated assembly of ferritin

Magnetic (FePt) and nonmagnetic (Au) nanoparticles were used to assemble ferritin into near-monodisperse bionanocomposites featuring regular interparticle spacing. The FePt/ferritin assemblies are integrated magnetic materials with ferritin providing added magnetic volume fraction to the magnetic nanocomposite. These assemblies differ from either of their constituent particles in terms of blocking temperature (TB), net magnetic moment, coercivity, and remnance.     

Decomposing a planar graph with girth at least 8 into a forest and a matching

W. He et al. showed that a planar graph of girth at least 11 can be decomposed into a forest and a matching. A. Bass et al. proved the same statement for planar graphs of girth at least 10. Recently, O.V. Borodin et al. improved the bound on the girth to 9. In this paper, we further improve the bound on the girth to 8. This bound is the best possible in the sense that there are planar graphs with girth 7 that cannot be decomposed into a forest and a matching.