Yanwu Xu
材料科学技术（英文）
Using mathematical plasticity theories, universal formability (UF) technology has been developed and applied in the automotive stamping engineering and production. As a formability analysis tool, this technology is the major methodology for the development of stamping expert system (solution provider) for (a) product design and feasibility analysis, (b) material automatic selection using nomograms, (c) draw die design using pre-models, and (d) UF and robustness analysis of die performance in finite element analysis (FEA) environment.
关键词:
杨德俊
,
李旭
,
李强国
,
肖圣雄
,
张应军
,
黄熠
中国稀土学报
将六水氯化钐,水杨酸与硫代脯氨酸3种物质一起反应,制得了一种新的稀土三元固体配合物[Sm(C7H5O3)2(C4H6NO2S)]·2H2O(s).通过红外光谱、热重差热分析、元素分析等手段确定了其结构与组成.在常压、298.15 K下,分别测定了六水氯化钐、水杨酸、硫代脯氨酸和该配合物在混合溶剂(二甲亚砜:乙醇:3 mol·L-1HCI=1:1:1)中的溶解焓,并根据热化学原理得出了298.15 K时配合物[Sm(C7H5O3)2(C4H6NO2S)]·2H2O(s)的标准摩尔生成焓△fHθm=(-2913.73±3.10)kJ·moL-1.
关键词:
稀土配合物
,
六水氯化钐
,
硫代脯氨酸
,
水杨酸
,
热化学
ZHANG Yunhua
,
GAN Fuxing
,
LI Meng
,
WANG Dihua
,
HUANG Zhongmai
,
GAO Yunpeng
钢铁研究学报(英文版)
Electrosorption technology was used to treat the reused comprehensive wastewater from iron and steel industry. A problem of relatively high conductivity of wastewater which greatly affects the reuse was examined, and industrial test was conducted for the reused water advanced deionization and purification in a comprehensive wastewater treatment plant of WISCO [Wuhan Iron and Steel (Group) Corporation]. The results of the onsite industrial test showed a satisfactory treatment performance for the reused water even at a flow rate of 1000 L/h in a standard 500 L/h unit. The average conductivity decreased by about 70%, from 580-780 μS/cm to 100-350 μS/cm. The average removal efficiency of Cl- and Ca2+ was about 75% and 68%, respectively, and CODCr of the treated water was also reduced in some degree while the pH value was almost unchanged. The energy consumption was as low as 06 kWh/t, which was remarkably superior to the conventional technologies. Therefore, it is entirely feasible that the novel electrosorption technology can be used in enhanced desalination and purification treatment of reused comprehensive wastewater in iron and steel industry.
关键词:
electrosorption
,
desalination
,
purification
,
conductivity
,
industrial reused water
肖剑荣
,
徐慧
,
李幼真
,
刘雄飞
,
马松山
,
简献忠
中国有色金属学报
使用CF4和CH4为源气体,利用射频等离子体增强化学气相沉积法,制备了a-C:F:H薄膜样品.采用拉曼光谱仪、傅里叶变换红外光谱仪、X射线光电子能谱仪(XPS)对薄膜的结构进行了测试和分析.研究发现:该膜呈空间网状结构,膜内碳与氟、氢的结合主要以sp3形式存在,而sp2形式的含量相对较少;在薄膜内主要含有C-Fx(x=1,2,3)、C-C、C-H2、C-H3等以及不饱和C=C化学键;同时,薄膜中C-C-F键的含量比C-C-F2键的含量要高.在不同功率下沉积的薄膜,其化学键结构明显不同.
关键词:
a-C:F:H薄膜
,
等离子体增强化学气相沉积
,
低介电常数
,
化学键
孙一新
,
王升富
应用化学
doi:10.3969/j.issn.1000-0518.2005.03.015
采用循环伏安法、交流阻抗谱探讨了L-半胱氨酸自组装膜修饰金电极表面细胞色素c(Cyt c)的电化学行为,Cyt c在该电极表面的平均吸附量Г=1.366×10-10 mol/cm2. 紫外-可见吸收光谱法和电化学方法证实,通过静电作用固定在L-半胱氨酸自组装膜电极上的Cyt c保持了良好的生物活性和电化学活性. 在低扫速时峰电流与扫速呈线性关系,表明Cyt c与电极之间是表面过程. 通过交流阻抗谱求得在细胞色素c/L-半胱氨酸膜修饰金电极上的标准异相电子迁移速率常数k0s为7.529×10-4 cm/s. 吸附到L-半胱氨酸自组装膜电极表面的Cyt c对H2O2的还原表现出良好的电催化效应,初步研究了电催化机理. Michaelis-Menten常数为Kappm=1.21×10-3 mol/L,与其它蛋白质相比,吸附在L-Cys/Au膜电极上的Cyt c对H2O2有较好的亲和力.
关键词:
细胞色素c
,
L-半胱氨酸
,
H2O2
,
金电极
李挺
,
刘德绪
,
龚金海
,
徐新波
,
赵景茂
,
左禹
腐蚀学报（英文）
利用静态挂片失重法研究了含H2S／CO2模拟油田水溶液中，温度及Cl^-浓度对L360管线钢点蚀的影响，并利用Gumbel第一类近似函数分析了最深蚀孔概率．结果表明，在40℃-70℃之间，Cl^-1浓度为10g／L条件下，点蚀的严重程度随温度增高而增大．恒定温度下，C1^-1浓度对点蚀发生也有明显的影响，当Cl在10-15g／L范围时，腐蚀试样发生明显的点蚀；当Cl^-浓度大于20g／L时，试样主要发生均匀腐蚀，随着Cl^-浓度的增大，腐蚀产物膜变得更加疏松，保护性能下降，均匀腐蚀速率增大．最深点蚀分布服从Gumbel第一类近似函数．
关键词:
H2S/CO2环境
,
管线钢
,
点蚀
,
氯离子
,
温度
,
统计分析
