典型案例教学在《Android 开发技术》课程中的应用

随着移动互联技术的迅猛发展,很多高等学校在软件工程和计算机科学与技术专业开设《Android开发技术》课程,培养学生从事移动互联终端软件开发的能力,但在该课程教学过程中存在教学内容枯燥乏味、学生学习缺乏积极性和教学效果差等问题。分析该课程知识点的特点,提出利用“典型案例”贯穿该课程的核心知识点,教学实践显示该教学方法适合该课程的教学。     

世界石化工业发展趋势的几点启示

在论述当今世界石化工业发展的三大趋势的基础上，引发对辽宁省石化行业发展的思考，得出几点启示。     

我国水泥技术现状及对未来的思索

我国新型干法水泥在原料综合利用和预均化、无烟煤和工业废渣的利用，环保和纯低温余热发电技术以及国产化和大型化机械装备等方面的发展已日趋成熟，加之工程招投标及建设、生产管理的规范和科学化，使得我国新型水泥生产的发展进入了快车道。新型干法生产线达标达产快，建设投资和生产耗能大大降低，单线生产规模和企业集团规模越来越大，这将预示着我国的新型干法水泥生产技术跨入世界先进水平。     

循环法生产K2SO4的工艺研究

开展了以ＫＣＩ、（ＮＨ＿４）＿２ＳＯ＿４为原料制备Ｋ＿２ＳＯ＿４的研究工作。确定了循环比、洗涤条件与反应时间。Ｋ＿２总转化率达７５％，产品收率约９７％；产品中Ｃｌ含量为０．５％～１．５％。     

Hybrid systems in seawater desalination—practical design aspects, present status and development perspectives

Ever since seawater desalination has been applied on an industrial scale, and particular in the countries of the Arabian Gulf, the application of desalination processes in dual-purpose facilities—water and power—as a hybrid configuration has been discussed in many feasibility investigations and also planning concepts. It is above all the combination of reverse osmosis with thermal processes that has found increasing interest with the aim of ensuring, as economically as possible, uniform water supplies under the specific, greatly varying load conditions in the Gulf countries. Such design concepts for hybrid configurations encompass straightforward structures with a low degree of coupling between membrane and thermal desalination processes, but range up to very complex configurations with strong interconnections on both the water side and thermally, as well as with several desalination processes connected in series or in parallel. Classical hybrid concepts in which the permeate from an RO desalination component is mixed with distillate from thermal desalination have already been implemented in Saudi Arabian dual-purpose plants, like Jeddah and Yanbu-Medina. Although hybrid systems of greater complexity have been addressed in many design studies and publications, up to now none has been brought to fruition. Coming into consideration asthe design basis for determining the capacity shares of the various desalination processes operated in a hybrid configuration are: arrangement of thermal cycle of the power plant component; water/power ratio of the dual-purpose seawater desalination and power plant; provision of undiminished water production of the desalination plant as electricity generation varies; provision of a specified drinking water quality with regard to composition and salt content; combination of all these aspects. Also gaining in importance are concerns of environmental pollution and sustainable development when selecting seawater desalination and power plant configurations, as well as their optimization when considering desalination and electricity generation as a whole. In the practical design of hybrid membrane and thermal systems, aspects come to light, though, that restrict linking of the two systems and joint utilization of facilities, as conceived in studies and conceptual design investigations. This applies both for common utilization of intakes and the use of heated up cooling water from thermal processes as a feed stream for the RO part of the desalination process. Additionally, requirements of drinking water composition, particularly chloride content, TDS and compliance with a specific residual content of boron, influence specifically the design of the membrane process part and its share in the total desalination capacity. Such practical aspects have greatly influenced the design and configuration of the Fujairah hybrid plant for which, from a total desalination capacity of 100 MIGD (454,600 m³/d), the share of 37.5 MIGD (170,500 m³/d) makes its seawater RO plant the biggest currently being constructed anywhere in the world. From the findings of the engineering of this plant and the idea that, by increasing interconnection between the two processes on the water side, it is possible to advance a hybrid configuration of this type with regard to cost optimization in the membrane installation, but also by joint utilization of the intake equipment, perspectives result for applied research efforts over the near and long terms, for example: long-term behavior of membranes at elevated temperatures; tendency for biofouling in membrane process with common utilization of cooling water and brine; influences of such interconnections on the overall availability of the facility. But also for the operation and maintenance organization of such large facilities, consequences can be foreseen for the future development of hybrid plants, particularly for operation management and organisation of the interplay of the different power plant and desalination systems, monitoring of SWRO membrane replacement and cleaning, as well as controlling water quality.     

电气绝缘材料的性能与发展

本文介绍了常用的固体绝缘材料的性能与作用，阐述固体绝缘材料的发展趋势。     

5G通信用化工新材料国内外市场现状及未来发展重点分析

简述了5G通信行业替代4G通信行业新材料的变化.重点分析了5G通信用化工新材料性能要求及国内外市场情况.指出5G通信行业及衍生市场的发展,将为我国化工新材料带来巨大的发展机遇.     

强化质量意识 提高市场竞争力

介绍了企业在面临国际陶瓷市场竞争激烈的形势下，努力转变发展思路，拓宽市场，强化质量意识。根据市场变化，生产适销对路搞档优质陶瓷产品，增强产品的市场能力，提高了企业的经济效益。     

上海化学工业区的建设必须依托深水海港的开发

分析上海港目前特定的环境和制约因素，指出上海化学工业区的建设必须依托深水海港的开发，提出舟山群岛中的大衢山是建设深水港岛的理想基地，并作了与上海陆地联系的设想。