大功率太阳能路灯装置照明系统设计

太阳能路灯装置由于零电费、无安全隐患、零排放、安装简便等优势大量应用于各种照明场所。结合采用大功率太阳能路灯装置的工程,分析了道路照明设计中遇到的各种问题,介绍了采用大功率太阳能路灯装置照明的一些设计原则,可为类似太阳能路灯装置照明设计提供参考。     

水下无线光通信关键技术与未来展望

随着“海洋强国”战略的推进,水下无线通信的需求愈加迫切。传统水声通信无法满足日益增长的水下数据高速传输需求,水下无线光通信凭借其高速率、高保密和低成本等优势,成为水下无线通信的研究热点。从水下无线光通信的传播特性和应用场景出发,概述了水下无线光通信的理论信道模型、编码调制技术和最新实验进展,并结合深海环境和6G愿景,展望了水下无线光通信多输入多输出技术、弱光信号检测技术和水下通感一体化技术的发展方向及相应挑战。     

Hierarchical Magnetic Network Constructed by CoFe Nanoparticles Suspended Within “Tubes on Rods” Matrix Toward Enhanced Microwave Absorption

Hierarchical magnetic-dielectric composites are promising functional materials with prospective applications in microwave absorption(MA)field.Herein,a three-dimension hierarchical“nanotubes on microrods,”core–shell magnetic metal–carbon composite is rationally constructed for the first time via a fast metal–organic frameworksbased ligand exchange strategy followed by a carbonization treatment with melamine.Abundant magnetic CoFe nanoparticles are embedded within one-dimensional graphitized carbon/carbon nanotubes supported on micro-scale Mo2N rod(Mo2N@CoFe@C/CNT),constructing a special multi-dimension hierarchical MA material.Ligand exchange reaction is found to determine the formation of hierarchical magnetic-dielectric composite,which is assembled by dielectric Mo2N as core and spatially dispersed CoFe nanoparticles within C/CNTs as shell.Mo2N@CoFe@C/CNT composites exhibit superior MA performance with maximum reflection loss of−53.5 dB at 2 mm thickness and show a broad effective absorption bandwidth of 5.0 GHz.The Mo2N@CoFe@C/CNT composites hold the following advantages:(1)hierarchical core–shell structure offers plentiful of heterojunction interfaces and triggers interfacial polarization,(2)unique electronic migration/hop paths in the graphitized C/CNTs and Mo2N rod facilitate conductive loss,(3)highly dispersed magnetic CoFe nanoparticles within“tubes on rods”matrix build multi-scale magnetic coupling network and reinforce magnetic response capability,confirmed by the off-axis electron holography.     

3号溶剂再生装置的腐蚀问题及应对策略

3号溶剂再生装置开工后,实现了全厂临氢装置胺液和非临氢装置富胺液独立再生和循环使用。在运行过程中发现再生塔顶部水冷器前三通腐蚀泄漏,对泄漏原因进行了分析,结果表明：管线材质等级不够,管道布局不合理,装置原料硫化氢含量高。通过更改管线材质、更改管道布局方式可减缓此部位的腐蚀,增加脉冲涡流扫查的范围和频次可有效监控易腐蚀部位的情况。     

单体聚合制备高吸水树脂研究进展

单体聚合制备高吸水树脂按照单体数目不同可分为一元均聚制备法、二元共聚制备法、三元共聚制备法和多元共聚制备法,分别对这四类单体聚合制备高吸水树脂的研究进展进行了综述,并对今后的研究思路与发展方向进行了展望.     

基于多目标混料设计的重介质旋流器混料成分配比

为了准确掌握重介质旋流器各混料成分之间的配比关系,明确不同配比对旋流器产出质量和产量的影响,实现分选效果的最优化.分析了现有旋流器优化和混料配比研究的不足,探讨了采用混料设计方法解决上述问题的可行性和局限性。通过设计混料试验,运行试验得到试验结果,建立混料成分与各响应变量的数学模型,分析模型的有效性,以各响应变量的同时最佳为综合约束条件进行响应优化,通过求解苛求函数复合合意度最高时的各参数值,确定各混料成分的最优配比,并通过T假设检验验证试验结果用于生产的有效性。结合某选煤厂旋流器生产运行情况,明确旋流器中块煤、悬浮液和煤泥各混料的水平要求,采用极端顶点法设计混料试验并运行试验,建立三因子与精煤灰分和产率两个响应变量之间的回归模型,分析两响应变量同时最佳条件下最优的混料配比,得到三混料成分配比依次为15.5%、59.8%、24.7%,依据上述配比进行试生产,并采用T检验验证试验结果是有效的,从而为选煤厂高效生产和精确控制提供有效的支撑,也为后期实现自动化控制提供了可能。     

Preface

The vision of ''Internet as a computer'' motivates many technical trends, like pervasive computing, grid computing, service computing and recently, cloud computing, as well as some business trends, like modern service industry, digital economy and smarter planet. These evolutionary changes demand that the software systems which are running on the open and dynamic Internet have to be autonomous, context-sensitive, continuous-reactive, evolutionary, and proactive, and the software entities dispersed on distributed nodes over the Internet will be turned into self-contained, autonomous and adaptive. Thus, like the information Web, i.e. the World Wide Web, these Internet-based software entities will constitute a software Web. That gives birth a new software paradigm. A portmanteau term ''Internetware'' is used to denote the future software-web. An Internetware system will be able to perceive the changes of the open and dynamic environment, respond to the changes, and exhibit the context-aware, adaptive and trustworthy behaviors. The mission of Internetware may challenge many aspects of software technologies, from the operating platforms and the programming models to the engineering approaches. Internetware 2010, the second Asia-Pacific Symposium on Internetware, aims to provide an interactive forum where researchers and professionals from multiple disciplines and domains meet and exchange ideas to explore and address the challenges brought by Internetware. The symposium was held at Suzhou, China, during the 2-4 of Nov, 2010. Thirty three papers were submitted and each of them was reviewed by at least two members of an International Program Committee. Among them, 12 have been accepted (which means an acceptance rate of 36%) for their quality as well as for their interesting terms of discussions for the symposium attendees. This special issue contains 7 revised and substantially extended papers from the 12 based on presentations at the symposium: ......     

小革新解决大难题

胶订联动线上发生书背起皱弊病一直是个令人头痛的难题。由于国产热熔胶在冷却固化时一般要求温度较低,所以夏季生产时,尽管我们车间有8台大功率空调进行降温,遇到较厚的书时仍有严重的书脊起皱现象。有时只好采取先配页胶订,摆放一段时间后再上三面切书机裁切的方法来避免起皱,费力耗时又增加了生产成本。     

玩耍的方式

阳光直穿过玻璃窗,在每张书桌上寻找牛奶杯盖子、麦管和干面包屑音乐大踏步走来,向阳光挑战,粉笔灰把回忆和欲望掺合在一起。     

陈旧铝板冲压件的开裂问题及工艺改进试验

<正>薄壁板料成形件是由硬铝合金薄板经下料、冲盂、化学清洗、退火、引伸、机加、热处理、材料性能试验、表面处理等多道工序制造而成,这种零件已经生产使用了多年,在冲压中