Development of combination textile of thin and thick fiber for fog collection bioinspired by Burkheya purpurea

Fog collection is getting to be known as an important technology all over the world. Textiles and fibrous materials have been used and investigated as fog collectors. Plants and animals need to collect water from air in an arid area. We focused on Berkhera purpurea which is one of the African thistles collecting moisture or fog by hairs. This plant captures fog droplets using finer and comparatively hydrophilic hairs supported by thicker and hydorophobic hairs. Mimicking these fibers’ system of thicker fibers and thinner fibers, hydrophobic and comparatively hydrophilic, we made a thinner fiber created by electrospun cellulose acetate on a thicker fiber of Nylon mesh as a supporting material. In the experiment, fine fibers of cellulose acetate are electrospun for 1 min which gave the superior fog capturing property.     

沥青路面裂缝成因分析与养护修复措施探讨

针对公路沥青路面的各种裂缝,分析了裂缝形成原因,根据裂缝的不同类型提出了相应的养护修复措施,以减少沥青路面裂缝的产生,延长公路沥青面层的使用寿命,确保运营安全。     

一种低成本环保处理酸雾的方法

利用在酸洗池上方加装酸雾收集器,在酸雾收集器内形成一定的负压,配合缓蚀剂的抑雾作用,阻隔酸雾的扩散,回收的氯化氢水溶液用于新酸洗液的配制。本方案成本低,效果显著,可适用不同大小,形状的酸洗池。     

How to place your apps in the fog: State of the art and open challenges

Fog computing aims at extending the cloud towards the Internet of things so to achieve improved quality of service and to empower latency-sensitive and bandwidth-hungry applications. The fog calls for novel models and algorithms to distribute multiservice applications in such a way that data processing occurs wherever it is best placed, based on both functional and nonfunctional requirements. This survey reviews the existing methodologies to solve the application placement problem in the fog, while pursuing three main objectives. First, it offers a comprehensive overview on the currently employed algorithms, on the availability of open-source prototypes and on the size of test use cases. Second, it classifies the literature based on the application and fog infrastructure characteristics that are captured by available models, with a focus on the considered constraints and the optimized metrics. Finally, it identifies some open challenges in application placement in the fog.     

一种低流阻高效除盐雾装置的试验研究

针对在恶劣环境部署的地面雷达进行了面向雷达整机的盐雾控制的研究。通过分析典型设备的环控需求,有针对性地采用了不同的盐雾控制策略,并给出了关键参数试验过程与结果。试验结果表明:该方法完全可以满足地面雷达全天候除盐雾的需要,也为后续类似产品的研制提供了参考。     

环烷基橡胶填充油低温发雾的原因分析及应对措施

中石油克拉玛依石化有限责任公司针对其生产的环烷基橡胶填充油（简称橡胶油）在低温下出现发雾不透明现象开展了针对性的试验与分析。结果表明：低温下橡胶油发雾是油中微量水引起的；当油中水质量分数低至11 μg/g时，低温下橡胶油仍可保持清澈透亮。该公司通过采取改造减压塔汽提段、利用干燥空气在罐内脉冲汽提48 h及出厂前用滤纸过滤三项措施，将橡胶油中水质量分数控制在10 μg/g以下，解决了橡胶油低温发雾问题。     

Computing Paradigms in Emerging Vehicular Environments: A Review

Determining how to structure vehicular network environments can be done in various ways. Here, we highlight vehicle networks’ evolution from vehicular ad-hoc networks (VANET) to the internet of vehicles (IoVs), listing their benefits and limitations. We also highlight the reasons in adopting wireless technologies, in particular, IEEE 802.11p and 5G vehicle-to-everything, as well as the use of paradigms able to store and analyze a vast amount of data to produce intelligence and their applications in vehicular environments. We also correlate the use of each of these paradigms with the desire to meet existing intelligent transportation systems’ requirements. The presentation of each paradigm is given from a historical and logical standpoint. In particular, vehicular fog computing improves on the deficiences of vehicular cloud computing, so both are not exclusive from the application point of view. We also emphasize some security issues that are linked to the characteristics of these paradigms and vehicular networks, showing that they complement each other and share problems and limitations. As these networks still have many opportunities to grow in both concept and application, we finally discuss concepts and technologies that we believe are beneficial. Throughout this work, we emphasize the crucial role of these concepts for the well-being of humanity.      

Seamless integration of cloud and fog networks

A way to merge cloud computing infrastructures with traditional or legacy network deployments, leveraging the best in both worlds and enabling a logically centralized control. A solution is proposed to extend existing cloud computing software stacks so they are able to manage networks outside the cloud computing infrastructure, the fog, by extending the internal, virtualized network segments. This is useful in a variety of use cases such as incremental legacy to cloud network migration, hybrid virtual/traditional networking, centralized control of existing networks, bare metal provisioning, and even offloading of advanced services from typical home gateways into the operator. Any organization can develop different ‘drivers’ to support new, specific networking equipment, not necessarily tied to a protocol or vendor, and leverage the fog network. Our conceptual solution is prototyped on top of OpenStack, including changes to the API, command‐line interface (CLI), and other mechanisms. Test results indicate that there are low penalties on latency and throughput, and provisioning times are reduced in comparison with similar maintenance operations on traditional computer networks. Copyright © 2016 John Wiley & Sons, Ltd.     

采煤机新型喷雾洒水系统的应用

东荣二矿综一工作面应用采煤机新型喷雾洒水系统,经研究试验取得了理想的效果,为煤矿安全和职工的身体健康创建了良好工作环境。