精益建造体系下人的不安全行为改进分析

不安全行为是指曾经引起过事故或可能引起事故的人的行为，它是造成事故的直接原因。建设领域中预防施工过程安全事故的发生，关键在于改进人的不安全行为，具体地说，可以从人的安全化、管理的安全化和环境的安全化三个方面着手。在建设领域，要实现建设安全的目标，精益建造体系下的相关理论对于改进人的不安全行为具有积极的作用。     

交流阻抗法对几种铜缓蚀剂比较研究

采用交流阻抗法研究了在ＮａＣｌ溶液中缓蚀剂ＢＴＡ、ＴＴＡ、５ＭＢＴＡ ＣＢＴＭＥ对铜电极的缓蚀行为并进行了比较。４种缓蚀剂的缓蚀性均随浓度的增加而增加，当浓度达到７０ｍｇ／Ｌ时缓蚀性最佳。缓蚀剂浓度低于２０ｍｇ／Ｌ时ＢＴＡ、ＴＴＡ、５ＭＢＴＡ有效好的缓蚀性，超过４０ｍｇ／Ｌ时ＣＢＴＭＥ的缓蚀性明显优于其他３种。复合配方试验结果表明，当缓蚀剂总浓度为４０ｍｇ／Ｌ，ＢＴＡ与５ＭＢＴＡ复配的最佳比例为２     

Synthesis of 2,4-dibromo-5-fluorobenzonitrile

2,4-Dibromo-5-fluorobenzonitrile has been synthesized for the first time (81.5% yield). It may be used in synthesizing 2,4-dibromo-5-fluorobenzoic acid, the intermediates of fluoroquinolones. The ammoxidation procedure for preparation of the nitrile has been described in detail. Zheng Qiong: born in 1945, Associate professor     

GCr15钢的强韧化处理实验研究

本文对冷模具用GCr15钢韧化处理进行了实验研究。结果表明,以适当温度加热,于160℃的油中等温淬火作为预处理,然后再加热到820℃,于160℃的油中等温淬火及160℃回火处理,可细化碳化物,细化奥氏体晶粒和组织,可使GCr15钢具有良好的强韧性配合。提高模具的使用寿命。     

Electrostatic effect on electron transfer between cytochrome b5 and cytochrome c

The binding and electron transfer between wild type, E44A, E56A, E44/56A, E44/48/56A/D60Aand F35Y variants of cytochrome b5 and cytochrome c were studied. When mixed with cytochrome c, the cytochrome b5E44/48/56A/D60A did not show the typical UV-vis difference spectrum of absorption, indicating that the alteration ofthe surface electrostatic potential obviously influenced the spectrum. The electron transfer rates of wild type cytochromeb5, its variants and cytochrome e at different temperature and ionic strength exhibited an order of F35Y > wild type >E56A > E44A > E44/48/56A/D60A. The enthalpy and entropy of the reaction did not change obviously, suggestingthat the mutation did not significantly disturb the electron transfer conformation. The investigation of electron transfer rateconstants at different ionic strength demonstrated that electrostatic interaction obviously affected the electron transfer pro-cess. The significant difference of Cyt b5 F35Y and E44/48/56A/D60A from the wild type protein further confirmed thegreat importance of the electrostatic interaction in the protein electron transfer.     

酸性红BG染料的合成研究

利用2，5-二氨基苯磺酸为原料合成2-氨基-5-乙酰氨基苯磺酸，并进一步经2-氨基-5-乙酰氨基苯磺酸重氮盐与γ酸的偶合反应合成了酸性红BG（CIAcidRed37），并对影响反应的因素进行了讨论．     

基于5S理念的图书馆数字设备管理

在论述5S管理内涵的基础上，将现代企业的5S管理理念引入图书馆数字设备的管理，并分析了图书馆数字设备管理的现状与存在的问题，探讨了5S方法在图书馆数字设备管理中的具体应用。     

First principles study-D88 lattice stability of low-rate metalloid Ti5Si3

First principles study is reported for the band structures, site and angular momentum decomposed density of states, and the electronic charge density distributions in high-temperature structural materials D8₈-Ti₅Si₃ with the addition of low-rate metalloid: carbon, boron, nitrogen and oxygen. It shows that how the addition of metalloid atoms can stabilize Nowotny phase of Ti₅Si₃ from the viewpoint of the electron structure. Supported by the National Natural Science Fundation of China Hong Lihua: born in 1974, Graduate student     

37Mn5钢临界应变数学模型研究

采用THERMECMASTOR-Z热模拟试验机,对37Mn5钢进行热模拟实验,研究材料的变形温度、变形程度和变形速率各因素对峰值应变的影响,确定37Mn5钢的临界应变数学模型,用计算机对该模型进行回归分析,得到的结果拟合度较高。