Oxide-Scale Evolution on a New Ni–Fe-Based Superalloy at High Temperature

Oxidation of Metals - The isothermal oxidation behavior and oxide-scale evolution on a newly developed Ni–Fe-based superalloy were investigated. Three oxidation stages were generally...     

战略布局决定市场能力——冀东水泥发展的思考

<正>近两年来,有两个主题一直在伴随着水泥行业的发展并深度影响着水泥行业的经营效益和产业格局:一个主题是宏观经济不佳、全球金融危机的后续深度影响;另一个主题是水泥全行业在加速投     

可信网络访问控制技术及系统

网络技术的高速发展给使用者带来高效信息交互的同时,也带来了网络安全和管理上的新问题,本文在分析可信网络连接规范的基础上,结合各种网络访问控制技术,对此规范进行了扩展,形成了可信网络访问控制模型,同时基于此模型对可信网络访问控制系统的关键技术进行了分析,为可信网络访问控制系统的设计和部署提供参考.     

TT型特种(陶瓷)过滤机的研究与应用

论述了TT型特种（陶瓷）过滤机的工作原理、设计原则及系统结构和该设备所具有的高效、节能、环保、产品滤饼水分可调、运行成本低、自动化程度高、工作环境好等性能特点，并工业应用的性能考查和技术经济指标的比较，论证了陶瓷过滤机的优良性能及其适用性。     

EAPS环网切换技术优化研究

本文基于EAPS协议基本技术,分析了影响EAPS环网链路切换性能的若干关键因素,并对EAPS协议进行了优化,包括提前刷新FDB表项和选择FDB表项刷新的顺序方式,使EAPS环网在链路发生故障时链路切换速度得到了提高,有利于实际应用中保证EAPS的切换速度。     

电信级以太网构建城域数据网的方案探讨

电信级以太网的部署应以满足业务需求为导向,综合考虑相关技术和标准的成熟度、部署成本、对现有网络改造的复杂度以及各厂商互通性等因素,根据技术特点为不同的业务应用选择适当的组网技术。本文在分析电信级以太网特征的基础上,结合参与的相关实际项目实践,对国际和国内运营商采用电信级以太网技术构建城域数据网的方案进行了分析和讨论。     

工业木质素活化改性及其在复合材料中的应用进展

不同原料和制浆工艺所得的工业木质素的结构与基团差别很大,其反应活性也较原本木质素要低。因此,可以通过活化改性改善其物化性能,以提高与其他聚合物的相容性,进而制备出化学性能优良的木质素基复合材料。本文综述了工业木质素的主要活化改性方法,对改性木质素在紫外防护、抗菌和抗氧化、吸附、生物医学和农药缓释等木质素基复合材料方面的应用进展做了详细介绍。     

生物质基水凝胶功能材料的研究进展

生物质基功能材料具有可持续、可生物降解和无毒性等优点,将生物质组分用于水凝胶功能材料的制备成为材料领域研究的热点。本文对几种生物质组分（纤维素、木质素、淀粉和单宁酸）及其衍生物用于制备水凝胶功能材料的最新研究进展进行了综述,对生物质基组分及其衍生物在水凝胶功能材料中的应用进行总结与展望,以期对新型功能材料的绿色发展提供参考。     

Synthesis, thermal stability, and photocatalytic activity of nanocrystalline titanium carbide

Titanium carbide (TiC) was prepared via one simple route by the reaction of metallic magnesium powders with titanium dioxide (TiO₂) and potassium acetate (CH₃COOK) in an autoclave at 600 °C and 8 h. Phase structure and morphology were characterized by X-ray powder diffraction (XRD) and Scanning electron microscopy (SEM). The results indicated that the product was cubic TiC, which consisted of particles with an average size of about 100 nm in diameter. The product was also studied by the thermogravimetric analysis (TGA) and its photocatalysis. It had good thermal stability and oxidation resistance below 350 °C in air. In addition, we discovered that the cubic TiC powders exhibited photocatalytic activity in degradation of Rhodamine-B (RhB) under 500 W mercury lamp light irradiation.     

Application of Fuzzy Comprehensive Evaluation to Air-conditioning Competitive Power Analysis

As the conceptual design of air-conditioning is done using the theory of Quality Function Deployment (QFD),cus- tomer requirements should be understood and the product competitive power be analyzed as exactly as possible for new product de- signing.Lots of information in the process of this research is fuzzy and uncertain,but traditional QFD can not deal with it well. Fuzzy theory can solve the problem.So a fuzzy model for analyzing product competitive power is formulated in this paper to im- prove traditional QFD,after that it is applied to analyze air-conditioning competitive power.When air-conditioning competitive power is analyzed using this model,firstly the importance weight of the customer requirements o fair-conditioning is determined us- ing the Analytic Hierarchy Process (AHP) weighting process,then air-conditloning competitive power is evaluated using fuzzy comprehensive evaluation.It is proved that the model is feasible and has good applicability.