关于如何办好我院安全工程专业的几点思考

为办好安全工程专业，应尽快成立该专业的建设指导委员会，围绕社会需求确定人才培养方案，加强专业建设和学科建设，同时要与建设高水平的安全生产基地相结合，做到相互促进，共同发展。     

都匀阶地土的承载特性研究

分析了阶地的形成与土层序列阶地土的判属以及持力层和承载。     

农村土地产权制度与土地综合生产能力的经济学分析

现存农村土地制度存在的主要问题是:土地的产权关系不明晰,土地使用权的不稳定,降低了农民对土地的利用效率;农民进行土地改良的投资十分有限,大大降低了土地综合生产能力.本文从产权经济学的角度分析农村土地产权制度与土地综合生产能力的关系.     

细菌代谢调控机制的系统性：初论从分子水平理解细菌代谢调节的系统性

利用系统科学的基本原理,从分子水平上对细菌代谢调节,功能网络及其与外界环境的关系进行了初步探讨,得出了细菌代谢调节系统性的一般结论.     

Остроградский──Gauss定理的一个注记

本文给出在一定条件下，即使在闭曲面围成的空间区域内有奇点公式也同样成立。     

器件表面保护用有机硅漆导电机理的探讨

通过测量不同固化条件下高压硅器件用有机保护材料聚酯改性硅有机漆SP的电阻率随温度变化的规律,并借助于对经各种条件固化后SP的热重、差热分析、红外光谱分析,研讨了它的高温导电机理.实验结果表明,在一定的固化条件下,固化后的材料在高温时具有最高的电阻率,材料中离子输运最弱,并具有较佳微观结构,这时材料的固化温度是210℃.提出了SP的高温电导主要是含羟基的分子产生的本征离子电导的新观点,建立了SP的高温导电模型,并对电性能测量结果作出了新的解释.     

Syntheses,crystal structures and blue emission of three zinc(II) coordination polymers with a 4,4′‐dicarboxybiphenyl sulfone ligand

Three novel zinc complexes [Zn(dbsf)(H₂O)₂] ( 1 ), [Zn(dbsf)(2,2′‐bpy)(H₂O)]·(i‐C₃H₇OH) ( 2 ) and [Zn(dbsf)(DMF)] ( 3 ) (H₂dbsf = 4,4′‐dicarboxybiphenyl sulfone, 2,2′‐bpy = 2,2′‐bipyridine, i‐C₃H₇OH = iso‐propanol, DMF = N,N‐dimethylformamide) were first obtained and characterized by single crystal X‐ray crystallography. Although the results show that all the complexes 1–3 have one‐dimensional chains formed via coordination bonds, unique three‐dimensional supramolecular structures are formed due to different coordination modes and configuration of the dbsf^2? ligand, hydrogen bonds and π–π interactions. Iso‐propanol molecules are in open channels of 2 while larger empty channels are formed in 3 . As compared with emission band of the free H₂dbsf ligand, emission peaks of the complexes 1–3 are red‐shifted, and they show blue emission, which originates from enlarging conjugation upon coordination. Copyright © 2006 John Wiley & Sons, Ltd.     

Synthesis of grafted poly(p‐phenyleneethynylene) with energy donor–acceptor architecture via atom transfer radical polymerization: Towards nonaggregating and hole‐facilitating light‐emitting material

In this contribution, we demonstrate a new effective methodology for constructing highly efficient and durable poly(p‐phenyleneethynylene) (PPE) containing emissive material with nonaggregating and hole‐facilitating properties through the introduction of hole‐transporting blocks into the PPE system as the grafting coils as well as building the energy donor–acceptor architecture between the grafting coils and the PPE backbone. Poly(2‐(carbazol‐9‐yl)ethyl methacrylate) (PCzEMA), herein, is chosen as the hole‐transporting blocks, and incorporated into the PPE system as the grafting coils via atom transfer radical polymerization. The chemical structure of the resultant copolymer, PPE‐g‐PCzEMA, was characterized by NMR and gel permeation chromatography, showing that the desirable copolymer was obtained with the narrow polydispersity. The increased thermal stability of PPE‐g‐PCzEMA was confirmed by thermogravimetric analysis and differential scanning calorimetry along with its macroinitiator. The optoelectronic properties of this copolymer were studied in detail by ultraviolet‐visible absorption, photoluminescence emission and excitation spectra, and cyclic voltammogram (CV). The results indicate that PPE‐g‐PCzEMA exhibits the solid‐state luminescent property dominated by individual lumophores, and also the energy transfer process from the PCzEMA blocks to the PPE backbone with a relatively higher energy transfer efficiency in the solid‐state compared to that of the solution state. Additionally, the hole‐injection property is greatly facilitated due to the presence of PCzEMA, as confirmed by CV profiles. All these data indicate that PPE‐g‐PCzEMA is a good candidate for use in optoelectronic devices. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 3776–3787, 2007     

聚丙烯酸接枝聚甲基丙烯酸甲酯共聚物的表面性质及粘度性质的研究

聚丙烯酸接枝聚甲基丙烯酸甲酯共聚物的表面有其特殊性质:水滴在其表面上形成的接触角基本上与其组成无关,而丙烯酸——甲基丙烯酸甲酯无规共聚物的表面接触角却与其组成有密切关系;接枝共聚物在DMF溶液中,其粘度表现出有趣的现象,说明了接枝共聚物在溶液中有微区现象和聚电解质性质     

甘油—乙醇混合液超声性质研究

测量了不同浓度的甘油、乙醇混合液的声速和密度,计算了超额绝热压缩系数.结果表明,在整个浓度范围内,甘油和乙醇之间存在着强烈的分子相互作用.