The Study of Capacitive Deionization Technology by the Analysis of Patents and Papers (original) (raw)
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The Society of Convergence Knowledge Transactions, 2019
Recently, the development of oil and gas, including unconventional energy, has been increasing in cold and harsh areas, and it is difficult to secure produced water in these areas, and a method of reuse is needed. In the reuse of the produced water, salts, acidity, ionic substances, etc., which affect the environmental pollution and the performance of machinery are removed below the standard value. In this paper, a produced water treatment system with a processing capacity of 180 BPD (bbl / day) was fabricated for the performance test to effectively remove fine oil contained in the produced water. The device is equipped with a saturator, an eductor, a circulation pump, a gas tank, etc. for generating micro-bubbles. Using these experimental devices, the microbubble formation according to the operating conditions and the oil removal characteristics according to the oil concentration of the produced water were evaluated experimentally. In the case of the proposed system through the micro-bubble generation test, it was possible to adjust the micro-bubble generation characteristics according to the pressure, the amount of gas, and the amount of circulating water. In addition, it can be seen that it affects the oil removal efficiency according to the formation form of the fine bubbles. In particular, the amount of nitrogen gas and the amount of circulating water had the greatest influence on the generation of micro-bubbles, and the oil removal performance could be evaluated by 97.1% depending on the cell composition.
Generalization of Disjoint Path Covers
2011
보통 상호연결망의 신뢰도(reliability) 혹은 고장 감내 도(fault tolerance)에 대한 척도는, 고장이 없는 노드들 사이에 통신을 두절시키지 않고 고장이 발생할 수 있는 최대 노드수로 주어진다. 상호연결망의 연결도 (connectivity)는 노드 고장에 대한 신뢰도에 대응한다. 그래프 의 연결도가 서로소인 경로라는 개념으로 특성 을 밝힐 수 있음은 널리 알려져 있다. Menger의 정리에 따르면 그래프 가 -연결될( -connected) 필요충분조건은 임의의 소스와 싱크의 쌍 , 에 대하여 그것을 잇는 일대일 유형의 서로소인 경 로가 개 존재한다는 것이다. 또한 소위 Fan Lemma가 말하는 그래프 가 -연결될 필요충분조건은 단일 소 스 와 서로 다른 개의 싱크 ... 를 잇는 일대다 유형의 서로소인 경로가 개 존재한다는 것이다[1]. 더 구나 그래프 가 -연결될 필요충분조건은 개의 서로 다른 소스 ...와 개의 서로 다른 싱크
The Journal of the Korea Contents Association, 2011
20 fossil sites of numerous fossil sites in Korea have been designated as Natural Monument for protection and conservation. Many of the sites which is located at the coastal area have been gradually disfigured by natural weathering, erosion and human activity. Thus the conservation of the original form and the documentation for the original figure are necessary. In this study, we applied 3D digital documentation to Natural Monument No. 394, Haenam Uhangri dinosaur, pterosaur, and bird footprint fossil site, for maintaining the original form of the dinosaur footprints. We were able to obtain the 3D digital data on two dinosaur footprint sites, a high resolution distributional map, and more accurate digital data of the dinosaur footprints applied the rendering method by ambient occlusion. 3D digital data on the dinosaur footprints is worth for the conservation and research data, moreover content for applying to the various fields such as to make 3D brochure, interactive contents, and so on.
A Study on the Design of Database to Improve the Capability of Managing Offshore Wind Power Plant
2010
As for the present wind power industry, most of the computerization for monitoring and control is based on the traditional development methodology, but it is necessary to improve SCADA system since it has a phenomenon of backlog accumulation in the applicable aspect of back-data as well as in the operational aspect in the future. Especially for a system like offshore wind power where a superintendent cannot reside, it is desirable to operate a remote control system. Therefore, it is essential to establish a monitoring system with appropriate control and monitoring inevitably premised on the integrity and independence of data. As a result, a study was carried out on the modeling of offshore wind power data-centered database. In this paper, a logical data modeling method was proposed and designed to establish the database of offshore wind power. In order for designing the logical data modeling of an offshore wind power system, this study carried out an analysis of design elements for the database of offshore wind power and described considerations and problems as well. Through a comparative analysis of the final database of the newly-designed offshore wind power system against the existing SCADA System, this study proposed a new direction to bring about progress toward a smart wind power system, showing a possibility of a service-oriented smart wind power system, such as future prediction, hindrance-cause examination and fault analyses, through the database integrating various control signals, geographical information and data about surrounding environments.
Journal of the Korea Society for Simulation, 2012
Automobile manufacturing consists of body-line, painting-line, and assembly-line. These production lines are disposed in series and go through a flow process, so according to the status of pre & post processing, a suspension happens in a line by a starvation(impossibility of production by insufficient supply) or blocking(impossibility of production by exceed capacity). Therefore, to prevent a loss of production coming from a starvation or blocking, a storage such as WBS or PBS is independently owned and operated. The paper suggests the simulation model of integrated storage which can operate it by integrating each storage performing a role as a buffer of line. Specifically, the paper found the answers about reasonable number of Stacker Crane and AGV(Automatic Guided Vehicle) and suggested a methodology of operation which is available to operate them. Also, it compared an efficiency between a model of current storage and integrated storage through simulation. As a result, it turned out that the model suggested in the paper was more efficient on suspension of painting-line stop than a current storage.
2020
Wear particles of the model tread compounds for bus and truck tires were made using a laboratory abrasion tester and characterized based on their size distributions, shapes, and crosslink densities. The influence of the carbon black contents and rubber compositions (NR= 100 and NR/BR= 80/20) on the production of wear particles was investigated. The wear particles were separated according to size using a sieve shaker. The shape properties of the wear particles were analyzed using an image analyzer and scanning electron microscopy (SEM). Their shapes were observed as tiny stick cookies or sausages with bumpy surfaces. The particle size distribution tended to be smaller with increasing carbon black content. Moreover, the particle size distributions of the NR = 100 samples were larger than that of the NR/BR blend samples. There were different filaments in the wear particles. The filament diameters tended to be thinner with increasing carbon black content. The crosslink density increased...