Sulfated choline ionic liquid-catalyzed acetamide synthesis by grindstone method

Sulfated choline ionic liquid (SCIL) has been found to be an efficient solid acid IL catalyst for the protection of amine groups with acetic anhydride under solvent-free grindstone conditions. The attractive features of this new catalytic methodology include its sustainability, facile work-up procedure, economic viability, and biodegradability. The SCIL catalyst was characterized using infrared spectroscopy, wide-angle X-ray scattering analysis, and scanning electron microscopy with energy dispersive X-ray spectroscopy. The catalyst could be reused six times without significant loss in activity. Furthermore, no chromatographic separations were needed to obtain the desired products.     

Thiol-Aldehyde Polycondensation for Bio-based Adaptable and Degradable Phenolic Polymers

Designing sustainable materials with tunable mechanical properties, intrinsic degradability, and recyclability from renewable biomass through a mild process has become vital in polymer science. Traditional phenolic resins are generally considered to be not degradable or recyclable. Here we report the design and synthesis of linear and network structured phenolic polymers using facile polycondensation between natural aldehyde-bearing phenolic compounds and polymercaptans. Linear phenolic products are amorphous with T_g between −9 °C and 12 °C. Cross-linked networks from vanillin and its di-aldehyde derivative exhibited excellent mechanical strength between 6–64 MPa. The connecting dithioacetals are associatively adaptable strong bonds and susceptible to degradation in oxidative conditions to regenerate vanillin. These results highlight the potential of biobased sustainable phenolic polymers with recyclability and selective degradation, as a complement to the traditional phenol-formaldehyde resins.     

An efficient task allocation framework for scheduled data in edge based Internet of Things using hybrid optimization algorithm approach

Allocation of tasks in IoT is an integral and critical approach to finding a perfect match between scheduled tasks of a particular application and Edge-based processing devices for instant response and efficient utilization of resources to make them renewable. We need a protocol to help optimize the problem of allocating processing devices to the tasks, as task allocation is considered an NP-hard problem to prevent problems with energy consumption and response time problems. For this, a hybrid bio-inspired Swarm-based approach will improve the solution to optimize the matching of a task to a particular device. This paper proposed a Meta-heuristic algorithm to optimize Energy and Time-delay for allocating tasks to the edge-based Processing device in IoT. The proposed algorithm called the Hybrid Artificial Bee Colony whales Optimization algorithm (HAWO) is formulated by integrating Artificial Bee Colony with the Whales Optimization algorithm to overcome the search process of an Artificial Bee Colony, which converges too soon due to the local search of Employee Bee phase and Onlooker Bee phase causing the problem of looping. From the simulation results conducted in Matlab, it is observed that the integrated HAWO method shows promising results in terms of Energy and Time Delay when compared with Artificial Bee Colony and Whales Optimization algorithms separately. Also, proposed method when compared with the benchmark work shows significant improvements of 50%, 25% and 60% in terms of Energy, Time Delay and Best cost, respectively.     

邮电信息系统体系结构研究

通过分析邮电信息系统的建设现状，结合邮电企业的具体情况，提出了邮电信息系统体系结构的建立原则、内容及一种邮电信息系统建设框架模型，以实现对邮电信息系统建设的全面规划、综合考虑系统功能的设定与结构的设计。     

科学发展观与"十一五"规划的制定 ——学习党的十六届五中全会精神的体会

本文论述了科学发展观的基本内涵,阐明了科学发展观是马克思主义发展理论与当代中国实际和时代特征相结合的最新成果。“十一五”规划是科学发展观的行动纲领。推进社会主义和谐社会建设是全面贯彻落实科学发展观的体现,也是用科学发展观统领经济社会发展全局的体现。     

光纤传感器的应用现状及未来发展趋势

对光纤传感器的应用概况进行了详细综述,介绍了几种使用在特定工作范围内已成熟的光纤传感器系统。针对工程方面的,详细介绍了光纤传感器的具体应用实例。并指出了目前光纤传感器应用上急需解决的一些问题及其发展趋势。     

高校毽球教学与训练探讨

通过对第六届全国少数民族传统体育运动会毽球赛参赛各队的技术、战术特点的分析,阐明当前我国毽球运动发展方向.论述了在高校开展毽球教学时如何去适应这一发展方向而采取的对策.     

新疆少数民族中小学生篮球运动发展主要因素研究

中小学生篮球运动是整个篮球人才培养体系的基础,它的良好发展不仅可以提高少年儿童的体质,而且可以提高篮球运动在我国的普及程度,为我国高水平篮球联赛输送后备人才。本文通过对新疆少数民族中小学篮球发展现状进行研究,找出影响中小学篮球发展的各种因素,并对其进行了全面、系统的分析,有利于新疆少数民族中小学生篮球运动的发展,对于全国中小学篮球运动的发展也有一定的借鉴意义。     

省运会后龙岩体育公园开发利用现状研究

采用文献资料法、比较法,着重分析了龙岩市大型体育场馆赛后经营管理中存在的问题,并结合实际提出了一些适合体育场地经营管理的思路和对策,促使大型体育场馆赛后走向良性循环。