防爆安检用地井井盖橡胶封条的研制

简介防爆安检用地井井盖橡胶封条的研制。防爆安检用地井井盖橡胶封条呈近似正方形(边长约72 mm)形状,由橡胶面层、橡胶粘合层和防粘层组成。橡胶面层有由两组并行排列的不连续弧形镂刻花纹组成的预裂口,正面印有警示标识及计算机识别编码。橡胶面层胶和橡胶粘合层胶主体材料分别采用三元乙丙橡胶和丁基橡胶。防爆安检用地井井盖橡胶封条已广泛应用。     

合并纹理图像技术

该文在“CIG2000”基础上,提出了基于合并纹理图像的纹理映射技术。使用该技术可以解决为多个几何体制定同一幅纹理图像,以及一个几何体的不同面映射不同的纹理图像。因此提高了工作效率,大大影响处理速度。     

折合(火用)成本在空调冷热源优化决策中的应用

考虑了冷热源在不同运行工况时能源"质"的利用情况及制冷工况和制热工况的综合系数,提出了折合(火用)成本的概念,并分别采用折合冷量(火用)成本和折合热量(火用)成本作为评价指标,对3种方案进行分析比较,得到了相同的结果.研究表明,将折合(火用)成本作为评价冷热源系统方案优劣的指标,是较为科学合理的.     

无卤阻燃剂对阻燃聚烯烃材料耐热氧老化性能的影响

采用熔融混炼法制备了不同无卤阻燃剂阻燃聚烯烃复合材料,以热烘箱老化法,使用万能试验机和差示扫描量热仪等仪器测试了其热氧老化、热开裂性能和氧化诱导期。结果表明,添加了不同种类无卤阻燃剂的材料的耐热老化性能优劣顺序为：硼酸锌＞氢氧化镁＞三氧化二锑＞三聚氰胺尿酸盐＞氢氧化铝＞磷酸盐＞碳酸钙;阻燃剂粒径越小,以其阻燃的聚烯烃热老化性能越差,阻燃剂经硅烷表面处理后,可提高阻燃聚烯烃的热氧老化性能。     

EDI与电子商务安全保密浅析

随着ＥＤＩ的日趋成熟与完善以及国际互联网的快速发展,一种全新的业务与服务—“电子商务”展现在人们面前。同时人们也越来越多地关心电子商务的安全与保密问题。下面将对ＥＤＩ与电子商务的安全保密分别加以阐述。一、ＥＤＩ的安全与保密ＥＤＩ的安全保密体系是保证Ｅ...     

Exploring acceptance of intelligent tutoring system with pedagogical agent among high school students

Universal Access in the Information Society - An intelligent tutoring system (ITS) provides universal access to education, which is an emerging paradigm of modern education. ITS is an educational...     

Data Acquisition and Control of a 22 L B. Braun Fermenter Using LabVIEW

The flexible and automatic monitoring and control of a 22 L B. Braun Biostat C fermenter using LabVIEW software were achieved by establishing a serial interface between the fermenter's control unit and a personal computer. This setup was also used for the on-line monitoring of the DO change in a custom-made 50 L airlift bioreactor.     

Synthesis and Evaluation of New Antagonists of Bacterial Quorum Sensing in Vibrio harveyi

Bacterial quorum sensing has received much attention in recent years because of its relevance to pathological events such as biofilm formation. Based on the structures of two lead inhibitors (IC₅₀: 35–55 μM ) against autoinducer‐2‐mediated quorum sensing identified through virtual screening, we synthesized 39 analogues and examined their inhibitory activities. Twelve of these new analogues showed equal or better inhibitory activities than the lead inhibitors. The best compound showed an IC₅₀ value of ～6 μM in a whole‐cell assay using Vibrio harveyi as the model organism. The structure–activity relationship is discussed herein.     

饮用水中异养菌平板计数检测方法的比较

对传统营养琼脂培养基、R2A培养基、mSPC培养基和TSA-SB培养基,在不同培养温度和培养时间下对饮用水中HPC的计数结果进行了对比检测。结果表明:富营养培养基,较高温度和较短时间培养产生的菌落数低于贫营养培养基在低温和长时间条件下培养的菌落数,贫营养的R2A培养基比其它培养基具有更好的灵敏性。     

软件外包服务关键标准与标准框架体系的研究

本文分析了国内外软件外包服务的发展现状和趋势,论证了开展软件外包服务标准化研究的必要性,并提出应首先开展软件外包服务标准框架体系的研究以及关键标准的研究。