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박정민(J. M. Park),전진우(J. W. Jeon),이민규(M. G. Lee) 한국해양환경·에너지학회 2014 한국해양환경·에너지학회 학술대회논문집 Vol.2014 No.5
리튬 이온에 대해 선택성이 있는 무기물 흡착제로 리튬망간산화물(LMO)을 고분자 물질인 SAN에 고정화한 SAN-LMO 비드를 제조하고, SEM을 사용하여 비드의 특성을 분석하였다. SAN-LMO 비드에 의한 리튬 이온의 평형실험 데이터는 Langmuir 흡착 등온식에 잘 적용되었으며, Langmuir 흡착 등온식으로 구한 최대 흡착량은 10 mg/g으로 나타났다. SAN-LMO beads containing lithium manganese oxide (LMO) on the inorganic adsorbent which had selectivity of lithium ions were prepared and SAN-LMO beads were characterized by SEM. Also, adsorption of litium ion by SAN-LMO beads was studied batchwise, adsorption process of litium ion fitted very well to Langmuir isotherm model. The maximum adsorption capacity of lithium ions calculated from Langmuir isotherm was 10 mg/g.
박정민(J. M. Park),함경준(G. J. Hahm),서효원(H. W. Suh) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
This paper introduces a methodology for construction of ontology-based product knowledge Map. For CPC(Collaborative Product Commerce) environment, engineering application of ontology has been studied . However, there are no generic and comprehensive methodologies for ontology construction yet because of such problems: dependency on experience of ontologist and domain experts and insufficiency of detail stages or rules. To solve those problems, we propose a methodology to construct ontology from engineering documents in semi-automatic. We use middle-out strategy and term"s axioms, sub-definitions, to build ontology map. 5-turple ontology structure, semantic network and First order logic (FOL) are used for ontology definition in this study.
박정민(J. M. PARK),임홍우(H. W. LIM),최연옥(Y. O. CHOI),이성길(S. G. LEE),조금배(G. B. CHO),백형래(H. N. BAEK) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
Utility interactive photovoltaic systems is one of the most promising applications of photovoltaic systems. These systems are employed in applications where utility service is already available. In this case, there is no need for battery storage because utility power may be used to supplement photovoltaic systems when the load exceeds available PV generation. The load receives electricity from both the photovoltaic array and the utility inter-tied. In this paper, Principle and operating characteristic of Utility Interconnected Photovoltaic System is presented. For the purpose of optimal utility inter-tied photovoltaic system design and installation. It is that demonstrate throughout the installed 3 PV system respectively, 3 ㎾ utility interconnected residential system.
박정민(J.M Park),박정국(J.K Piao),최연옥(Y.O Choi),이강연(K.Y Lee),백형래(H.L Baek),조금배(G.B Cho) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
This paper summarizes the results of these efforts by offering a photovoltaic system structure in 50㎾ middle scale applications installed in Chosun University dormitory roof. This describes configuration of utility interactive photovoltaic system which generated electric power supplies to dormitory. In order to installing the middle or large scale photovoltaic system, It must investigated the optimal design of system, compute quantity of power generation, economic rate of return and so on. In this paper represent 50kW utility photovoltaic system examination and developed simulation results. The performance of photovoltaic system has been evaluated and analyzed with simulation. The results obtained in this research will be much useful to prior investigation for installing utility interactive photovoltaic system.