发展武钢环保产业的探析

当今世界环保产业不断地进行技术创新,其发展呈现出投资增加、注重国际间的交流与合作等新特点,并正向着综合化、大型化、集团化方向发展。武钢已拥有几家从事环保产业的公司,环保产业具有相当的规模和良好的基础。武钢发展环保产业虽有资源、市场、区域、技术、政策上的优势,但产业结构不够均衡,机制不活、产业优势和资源优势结合不够紧密等。武钢应抓紧时机,明确现阶段环保产业发展战略与方向,整合资源,努力把环保产业做大做强。     

Study on early warning index of spatial deformation for high concrete dam

Owing to the deficiency in early warning for high concrete dam,a formula was established to characterize the deformation behavior of high concrete dam as a whole.The early warning index of spatial deformation was calculated by low probability principle on the basis of the deformation entropy formula proposed.The steps were as follows.Firstly,the probability method was utilized to define the degree of order and degree of chaos for each survey point.Secondly,the weight distribution among the survey points was...     

A model for studying LCAT reaction: In vitro cholesterol esterification in pig ovarian follicular fluid

Phosphatidylcholine acyltransferase (lecithin:cholesterol acyltransferase or LCAT; EC 2.3.1.43) activity was found to be present in pig ovarian follicular fluid (POFF), in addition to pig serum (PS). The cholesterol esterification rate in both POFF and PS is linear with incubation time up to 2 hr. The mean absolute rate of POFF-cholesterol esterification was 8.1±0.4 nmoles per ml per hr approximately one-fourth of that in PS. However, the fractional rate (percent of labeled cholesterol esterified per hr) of POFF-cholesterol esterification was similar to that observed in PS. There was little variation of absolute rate of cholesterol esterification in the fluid obtained from different sizes of follicles. Fatty acid or triacylglycerol did not participate in the reaction of cholesterol esterification in POFF. No appreciable change in enzymatic activity was found from storing POFF at 4 C for periods of time up to 24 hr or at −70 C up to 2 months, but activity was lost thereafter. On the other hand, PS showed a much longer period of stability (5 days at 4 C and 9 months at −70 C). A discrepancy between the fatty acid composition of cholesteryl esters formed by the LCAT reaction and the fatty acid composition at the C-2 position of phosphatidylcholine led us to propose a two-step mechanism for the LCAT reaction. It is concluded that the LCAT of POFF, as well as that of plasma, is specific for individual fatty acids rather than for the fatty acid composition of phosphatidylcholine. The fatty acid concentration of lysophosphatidylcholine decreased during prolonged incubation times (6 to 21 hr) suggesting that the increased lysophosphatidylcholine formed as a product of the LCAT reaction may be reused as substrate for the LCAT reaction or for hydrolysis by lysophosphatidylcholine hydrolase. Presented at the AOCS Meeting, New York, May 1977.     

Coupled oscillations of H2/O2/CO on silica supported rhodium catalyst

Self-sustained oscillations obtained during the catalytic oxidation of CO and H₂ were studied over Rh/SiO₂ by an FTIR-mass spectrometric technique. An average oscillatory period of 7.1±0.5 minutes was obtained for the CO/O₂ reaction at 348 K. For the H₂/O₂ oscillatory reaction the period was observed to be 1.3±0.8 minutes. When the oscillations were coupled at the same temperature, the period for both the CO/O₂ and the H₂/O₂ reactions was observed to be 7.9±0.8 minutes. The kinetic coupling of the reaction rates is explained by considering the periodic fluctuations in surface temperature which occur as a result of the more exothermic CO/O₂ reaction.     

基于计算机视觉算法的视频智能监控与跟踪系统研究

本文基于计算机视觉算法设计了视频智能监控与跟踪系统.以OpenCV计算机视觉库、Visual Studio与MFC框架开发并实现了系统.首先设计系统整体框架,其次着重分析视频数据预处理,再次以高斯混合背景差分法提取目标,通过阈值二值处理与背景相分离,然后以Camshift与卡尔曼滤波跟踪目标并发出告警提示,最后系统实现结果表明,基于高斯混合背景差分法进行运动目标提取,并通过阈值二值处理,可准确可靠地与背景相分离,目标检测效果显著;可及时准确触发告警机制,发出告警提示信息.     

从女性主义角度浅析《傲慢与偏见》两译本

从女性主义的角度对简·奥斯丁的作品《傲慢与偏见》的两个中文译本——孙致礼和张玲、张扬的译本进行比较。分析女性主义意识对翻译过程以及最终译本的影响。     

应用型本科数学类专业职业技能培养研究

构建应用型本科数学类专业职业技能课程体系,强化职业资格认证,提高数学类专业学生就业能力,拓展数学类专业就业领域.     

Electrochemical investigation of La0.4Sr0.6TiO3 synthesized in air for SOFC application

Journal of Applied Electrochemistry - La-doped titanate materials have been widely investigated as alternative Ni-free anodes for solid oxide fuel cells (SOFCs). In this study, La0.4Sr0.6TiO3 (LST)...     

基于KBE的冲压工艺知识表示方法研究

根据冲压成形工艺的特点 ,研究了冲压工艺知识的分类 ,采用面向对象的方法 ,探讨了基于规则与基于实例的冲压工艺知识描述和自动获取技术 ,并在此基础上建立了基于知识驱动的冲压工艺特征模型。     

机械零件刚度的模糊可靠性设计

介绍了机械零件刚度模糊可靠性设计变形分布参数和刚度隶属函数的确定,导出了零件刚度模糊可靠度的计算公式,并通过机床主轴模糊可靠性设计实例说明机械零件模糊可靠性的计算方法.