现代生物技术应用于抗衰老研究的新进展

论述了生物体衰老的分子机理，探讨了抗衰老的途径，归纳了将现代生物技术应用于抗衰老研究的新进展。     

Ti3+:ZrSiO4中Ti3+中心g因子研究

锆英石(ZrSiO4)的热膨胀系数和导热系数较低,抗震性能和化学稳定出色,近年来,逐渐受到人们的重视.通过引入平均因子和3d1电子在D2d晶场的g因子公式,研究了Ti^3 :ZrSiO4中Ti^3 中心EPRg因子,得到的结果与实验值基本稳合.     

聚氨酯粉末涂料的制备与固化条件的研究

运用正交试验法研究了制备聚氨酯粉末涂料的工艺条件，讨论了树脂、固化剂、固化 催化剂等对涂膜性能的影响；并对涂料的固化条件进行了研究，得到了理想的固化温度和固化 时间．     

化学交联型体温形状记忆聚氨酯研究

Ｓｈａｐｅｍｅｍｏｒｙｐｏｌｙｕｒｅｔｈａｎｅ (ＳＭＰＵ)ｉｓａｎｏｖｅｌｆｕｎｃｔｉｏｎａｌｐｏｌｙｍｅｒｍａｔｅｒｉａｌ.Ｉｎｒｅｃｅｎｔｒｅ ｓｅａｒｃｈ ,ｂｏｄｙｔｅｍｐｅｒａｔｕｒｅＳＭＰＵｉｓｒｅｃｅｉｖｉｎｇｍｏｒｅａｎｄｍｏｒｅｓｐｅｃｉａｌｉｎｔｅｒｅｓｔｉｎｇ .Ｂｏｄｙｔｅｍｐｅｒａ ｔｕｒｅＳＭＰＵｂｅｌｏｎｇｓｔｏｓｅｇｍｅｎｔｅｄｃｏｐｏｌｙｍｅｒ ,ｗｈｉｃｈｃａｎｂｅｄｅｆｏｒｍｅｄｉｎｔｏａｎｙｆｒｅｅｓｈａｐｅａｂｏｖｅｔｈｅｇｌａｓｓｔｒａｎｓｉｔｉｏｎｔｅｍｐｅｒ…     

静电力、共价力与Lewis酸的软硬度

用二参方程φ=XZ/ri^2 Z^＊/rc^2计算Lewis酸软硬的标度，参数Z／ri^2与静电力有关，Z^＊／rc^2与共价力有关．运用该式计算119种酸的软硬度值，结果与Pearson根据实验总结的分类结果一致.     

Preparation and Characterization of Temperature-Sensitive Hydrogels Composites by Coating Method

In this study,the hydrogels composites with coatings based on a temperature-sensitive linear copolymer of N-tert-butylacrylamide(NTBA)and acrylamide(AAm)on cotton fabrics have been developed.The cotton fabrics were coated using aqueous solution of the linear copolymer,1,2,3,4-butanetertracarboxylic acid(BTCA)as a cross-linker and sodium hypophosphite(SHP)as a catalyst,followed by drying and curing.The effects of cross-linking reaction conditions in coating process on water-impermeable ability of coated cott...     

α－（AlMnSi）空间构型与价电子结构分析

分析了金属间化合物α－（ＡｌＭｎＳｉ）的空间结构，并运用余瑞璜的固体与分子经验电子论中的键距差分析法计算了α－（ＡｌＭｎＳｉ）的理论键距及其各种原子所选取的杂阶．在此基础上计算出α－（ＡｌＭｎＳｉ）中Ｍｎ原子键络的共价键键能．     

Covalent immobilization of oligoDNA on the surface of magnetic nanoparticles and surface-enhanced Raman scattering study

The DNA magnetic nanoparticles are potentially useful in isolating and purifying DNA or RNA, directing-target-medicines, the development of DNA biosensors and biochips. Surface functionalized magnetic nanoparticles with monodispersed shape and size were prepared by coating nano-sized γ-Fe2O3 with silica in reverse microemuision, and then thioi-compounds were immobilized onto the magnetic nanoparticles. After immobilizing oligoDNA modified with thioi-disuifide on the surface of the fictionalized magnetic nanoparticles, we obtained DNA-magnetic nanoparticles.The efficiency of the single-linking probes loading at the surfaces of magnetic nanoparticles was examined via hybridization experiment. Surface-enhanced Raman scattering methods were also effectively applied to observing the immobilization and hybridization processes mentioned above.The results demonstrated oligoDNA being availably connected to the surface of the magnetic nanoparticles.     

应用交联剂TAHT提高活性染料固色率的探讨

本文探讨了交联剂TAHT在活性染料印花时的作用。证实了在活性染料印花中采用交联剂TAHT,可使大部分常用活性染料的固色率及印花织物的K/S值获得不同程度的提高,并确定了应用TAHT的合适的色浆配方及印花工艺。使用TAHT可提高活性染料的利用率,减轻后处理负担,减少污水,降低成本。     

稳定剪切条件下聚合物冻胶的交联动力学研究

采用HAAKE RS150流变仪,测试分析了稳定剪切条件(1～20 s-1)下部分水解聚丙烯酰胺与铬离子的交联过程中表观粘度随时间的变化规律,得到稳定剪切条件下的交联动力学方程.研究结果表明,稳定剪切下成冻体系的交联反应可分为诱导、成冻、限制粒径和稳定4个阶段,当剪切速率增大或聚合物、交联剂浓度降低时,可能不出现明显的粒径限制阶段;初始交联时间与剪切速率、部分水解聚丙烯酰胺中的羧基浓度、铬离子浓度、氢离子浓度有关;稳定剪切下交联反应的表观活化能为60.56 kJ·mol-1.与静态条件下的交联反应相比,稳定剪切条件下交联反应速率受聚合物中羧基的影响更大,交联反应表观活化能降低.