Advancing controlled release packaging through smart blending

Researchers from Rutgers University and Clemson University have collaborated to develop a concept of using smart blending to generate functional packaging films for the controlled release of active compounds such as antimicrobials, antioxidants and flavour compounds to extend the shelf‐life of food. In this paper, literature results are reviewed to justify the significance of controlled release packaging (CRP) and the research gaps for further development are identified. A major research gap is the lack of packaging materials that can provide the release of active compounds at rates suitable for a wide range of food packaging applications. Smart blending is a promising technology for bridging this research gap. To fully realize the potentials of smart blending, a systematic approach for developing CRP using smart blending is also presented. Copyright © 2005 John Wiley & Sons, Ltd.     

液流混合处理对半固态A357浆料组织的影响

研究了用液流混合方法(CRP)制备A357半固态浆料时,液流混合、熔体温度和反应器温度等因素对浆料组织的影响。试验结果表明,熔体经过反应器的强制混合后,形成的半固态浆料内部初生相呈细小的近球状,与未经处理的浆料组织相比有显著差异。而低的熔体温度和反应器温度(熔体温度不高于640℃,反应器温度低于300℃)有利于减小初生相尺寸,促进其形成近球状。进一步的分析表明液流混合影响了金属熔体的形核与生长过程,进而改变了凝固组织。     

可复用公文流转设计模型

根据当前我国电子政务建设中公文流转存在的需求多变等特点,介绍了如何在公文流转设计中应用类继承、合成复用原则和管道与过滤器体系结构模式,探讨并提供了一个灵活的、可复用的设计模型.     

基于多处理器数据库系统的查询调度算法

提出一种多重查询调度算法——连续读取特性（CRP）调度算法,该算法应用连续读取特性,使查询的数据可以重组出某些连续关系,从而使之具有连续读取特性,解决了现有算法中有部分系统资源闲置的问题,提高查询速度。仿真实验结果表明,CRP调度算法的系统利用率和系统性能均优于其他算法。     

Polymer brush coatings for combating marine biofouling

A variety of functional polymer brushes and coatings have been developed for combating marine biofouling and biocorrosion with much less environmental impact than traditional biocides. This review summarizes recent developments in marine antifouling polymer brushes and coatings that are tethered to material surfaces and do not actively release biocides. Polymer brush coatings have been designed to inhibit molecular fouling, microfouling and macrofouling through incorporation or inclusion of multiple functionalities. Hydrophilic polymers, such as poly(ethylene glycol), hydrogels, zwitterionic polymers and polysaccharides, resist attachment of marine organisms effectively due to extensive hydration. Fouling release polymer coatings, based on fluoropolymers and poly(dimethylsiloxane) elastomers, minimize adhesion between marine organisms and material surfaces, leading to easy removal of biofoulants. Polycationic coatings are effective in reducing marine biofouling partly because of their good bactericidal properties. Recent advances in controlled radical polymerization and click chemistry have also allowed better molecular design and engineering of multifunctional brush coatings for improved antifouling efficacies.     

一种有效的转换波静校正方法

转换波技术由于具有常规P波勘探无法相比拟的优点而成为当前地震勘探中的一门新技术。而静校正在转换波勘探中是处理的重点和难点。为此很多学者专家为此提出了各自的解决办法,但是由于转换波静校正问题的复杂性,该问题至今仍尚未圆满解决。本文首先在转换波的CRP（共接收点）叠加剖面上追踪拾取同相轴,然后结合纵波对应层位的地下构造求取接收点的横波静校正量。该方法通过对理论模型和实际资料的试算验证了其有效性。     

基于流体替换进行AVO分析检测深层Ⅰ类气藏

AVO是研究地震CRP道集振幅变化规律(随炮检距)的技术,能够从叠前地震数据中获取与地层岩性和含油气性相关的地震属性体,进而进行含气预测,是一门适应勘探开发发展需要的地震技术.传统的“亮点”技术适合检测Ⅲ类AVO含气异常,对于中、深层含气砂岩表现出来的Ⅰ类AVO现象无法识别.某油气田气藏富集,同时含水层也广泛分布,各类...     

反应堆材料热物性数据库管理系统

衡量一个数据库的质量，不以要看其所包含的数据还应考虑数据库管理系统的使用功能。为了更有效地实施ＩＡＥＡ的ＣＲＰ（ＣｏｏｒｄｉｎａｔｅｄＲｅｓｅａｒｃｈＰｒｏｇｒａｍｍｅ）中有关建立反应堆材料热物性数据库的计划，并考虑到能使所收集的数据方便地为用户服务和进行广泛的国际交流，为此设计并编制了该数据库的软件管理系统ＴＰＳＹＳ。这个系统可在ＩＢＭ－ＰＣ（３８６，４８６）等兼容机上运行，采用人机对话、菜单提示、全屏幕操作。其主要功能有：数据库维护、数据检索、与大型计算程序ＭＡＴ－ＰＲＯ接口和与国际上现有的数据库ＴＨＥＲＳＹＳＴ接口。     

IoMT-Based Smart Monitoring Hierarchical Fuzzy Inference System for Diagnosis of COVID-19

The prediction of human diseases, particularly COVID-19, is an extremely challenging task not only for medical experts but also for the technologists supporting them in diagnosis and treatment. To deal with the prediction and diagnosis of COVID-19, we propose an Internet of Medical Things-based Smart Monitoring Hierarchical Mamdani Fuzzy Inference System (IoMTSM-HMFIS). The proposed system determines the various factors like fever, cough, complete blood count, respiratory rate, Ct-chest, Erythrocyte sedimentation rate and C-reactive protein, family history, and antibody detection (lgG) that are directly involved in COVID-19. The expert system has two input variables in layer 1, and seven input variables in layer 2. In layer 1, the initial identification for COVID-19 is considered, whereas in layer 2, the different factors involved are studied. Finally, advanced lab tests are conducted to identify the actual current status of the disease. The major focus of this study is to build an IoMT-based smart monitoring system that can be used by anyone exposed to COVID-19; the system would evaluate the user’s health condition and inform them if they need consultation with a specialist for quarantining. MATLAB-2019a tool is used to conduct the simulation. The COVID-19 IoMTSM-HMFIS system has an overall accuracy of approximately 83%. Finally, to achieve improved performance, the analysis results of the system were shared with experts of the Lahore General Hospital, Lahore, Pakistan.     

基于WiFi的自组织网络路由协议算法研究

以基于WiFi的自组织网络为应用背景,本文利用仿真平台OPNET对四种经典自组网路由协议的性能进行了仿真比较。实验结果表明,反应式路由协议的性能总体优于先应式路由算法,而AODV协议由于其备份路由的特性,性能更优。为满足战场环境下车载自组织网的大规模组网要求,以及火控数据的时延传输要求,结合AODV算法的优势,本文提出了一种新的分层自组网路由算法CRP,其分簇结构的设计减少了网络拓扑变化对寻由过程的影响和路由发现过程中的洪泛开销,加速了路由的查找过程,仿真结果显示该算法的综合性能优于AODV算法及经典分簇路由协议ZRP算法,端到端传输时延明显减小。