牛奶/涤纶/羊绒三组分纤维混纺织物的开发

文章主要论述了13．1／13．1338／198241．5牛奶纤维／涤纶／羊绒混纺织物的加工工艺及生产中的难点，以及所采取的生产技术措施和取得的效果。     

Effects of different force fields and temperatures on the structural character of abeta (12-28) Peptide in aqueous solution

The aim of this work is to investigate the effects of different force fields and temperatures on the structural character of Aβ (12-28) peptide in aqueous solution. Moreover, the structural character of Aβ (12-28) peptide is compared with other amyloid peptides (such as H1 and α-syn12 peptide). The two independent temperature replica exchange molecular dynamics (T-REMD) simulations were completed by using two different models (OPLS-AA/TIP4P and GROMOS 43A1/SPC). We compared the models by analyzing the distributions of backbone dihedral angles, the secondary structure propensity, the free energy surface and the formation of β-hairpin. The results show that the mostly populated conformation state is random coil for both models. The population of β-hairpin is below 8 percent for both models. However, the peptide modeled by GROMOS 43A1 form β-hairpin with turn located at residues F19-E22, while the peptide modeled by OPLS-AA form β-hairpin with turn located at residues L17-F20.     

Syntheses and Characterizations of Two One-Dimensional Coordination Polymers Assembled by Dicarboxylate and N-Donor Coligands

Two new coordination polymers [Mn(oba)(1,10-phen)] _n (1) and [Zn(oba)(Pbim)₂] _n (2) [H₂oba = 2-(3-carboxyphenoxy)benzoic acid, 1,10-phen = 1,10-phenanthro line and pbim = 2-(2-Pyridyl)benzimidazole] have been synthesized and structurally characterized by elemental analysis, IR and X-ray diffraction. Single-crystal X-ray analyses revealed that 2,3′-oba ligand act as a bridging ligand, exhibiting three coordination modes to link metal ion: bis-monodentate, bidentate chelating and monodentate modes. Compound 1 and 2 all demonstrate a 1D chain. There exist intermolecular hydrogen bonds which further connect the 1D structure into 2D supramolecular structure in compound 1 and 2. In addition, the luminescent property for compound 2 is also investigated in the solid state at room temperature.     

二次孕育对球墨铸铁组织的影响

在保持总的碳、硅含量不变的情况下,降低原铁水含硅量,增加二次孕育硅量,研究了二次孕育对球墨铸铁组织的影响。结果表明,一次孕育处理易发生孕育衰退,采用0.1%的硅铁进行二次孕育后,球铁的石墨组织明显得到改善,基体中珠光体的含量略有增加,硬度提高。但为了减缓孕育衰退而进行大剂量的二次孕育反而容易导致石墨产生畸变,促使碎块状石墨和铁素体基体的形成,硬度急剧下降。     

二芳基甲烷类化合物的合成方法研究进展

在阐述二芳基甲烷类化合物重要用途的基础上,对二芳基甲烷类化合物的合成方法进行了综述,为我们更好地探索二芳基甲烷类化合物的新型合成方法提供帮助。     

蜂窝光触媒纤维/棉混纺筒子纱染色

蜂窝光触媒纤维可大大增加织物的导电性能,其抗静电、吸附、除臭、抗菌、发射远红外线和产生负氧离子等能力也大大提高。蜂窝光触媒纤维在染色过程中怕酸怕碱、热缩非常大,是其筒子纱染色的难点。蜂窝光触媒纤维/棉混纺纱染色时,需调整染色工艺,兼顾蜂窝纤维和棉纤维的染色特性。染色后各项牢度指标均达到标准要求。     

云母纤维环保纱线的纺纱工艺探讨

探讨了云母纤维纯纺纱的生产与开发,分析了云母纤维的主要特性。根据其纤维特性,确定了纺纱各工序主要工艺参数。云母纤维长度整齐度好、较蓬松,抗静电性较好,指出在生产中速度要注意偏低掌握,清梳工序要采用柔和梳理,并严格控制好半制品的工序质量,以确保成品质量的稳定。     

生物化学实验教学改革探索

生物化学是生物学类专业的基础课,是衡量生命科学专业教学质量的关键环节,生物化学实验是培养学生创新能力的重要环节,本文就如何提高生物化学的教学质量,进行了相关教学的改革与尝试。通过改革生物化学实验内容、教学模式和考核方式等,优化了生物化学实验教学体系,培养了学生学习的积极性和主动性,提高了学生的创新能力和实践能力。     

UV-B辐射对番茄幼苗抗氧化防御系统的反应

研究了UV-B辐射下番茄幼苗抗氧化系统的反应。试验用两个剂量(15.0 kJ.m-2和30.0 kJ.m-2)诱导番茄幼苗的氧化伤害,结果脂质过氧化增加及叶绿素含量降低和SOD活性下降。这些结果表明,UV-B辐射可以诱导番茄幼苗抗氧化防御系统,使植物在胁迫下存货。     

单片机教学中Proteus和Keil软件的应用

单片机传统教学方法效果不甚理想,因此在单片机教学中引入Proteus与Keil联合仿真方法,通过边讲授、边设计、边演示的手段获得了很好的教学效果。在介绍Proteus与Keil后,通过一个实际例子讲解了如何利用Proteus与Keil软件进行单片机教学的方法。实践证明,该方法可明显提高学生学习的兴趣,促进学生对单片机结构与原理的理解,锻炼学生进行软硬件开发的能力。