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이종준,김경학,김경준,김형준,Young Min Lee,신태호,한정우,이강택 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.103 No.-
(La,Sr)TiO3 has been investigated as a promising anode material for solid oxide fuel cells (SOFCs) owing toits high electronic conductivity and superior phase stability. However, the low catalytic activity of (La,Sr)TiO3 materials is a major obstacle to the application of SOFCs. Exsolution has emerged as an effectivestrategy to overcome the low catalytic activity of (La,Sr)TiO3 materials. In this work, Ni-doped A-sitedeficientLa0.4Sr0.4TiO3-d (LST) (i.e., La0.4Sr0.4Ti0.94Ni0.06O3-d; LSTN) with in-situ exsolved Ni nanoparticles(NPs) was developed and the effects of exsolved Ni NPs on H2 oxidation was investigated. The dopedNi was exsolved and formed NPs on the LSTN surface under reducing conditions. Owing to the high catalyticactivity of the exsolved Ni NPs, the SOFC with LSTN-Ce0.9Gd0.1O2-d (GDC) yielded a maximum powerdensity of 0.46Wcm 2 at 850 C, 91% higher than that of the cell with LST-GDC, as well as high long-termand redox stability. Furthermore, density functional theory calculations revealed that the adsorption anddissociation of H2 were more favorable for exsolved Ni NPs than for pure Ni owing to the more positivelycharged surface of the exsolved Ni NPs in the LSTN. These results demonstrated that exsolution is aneffective method for improving the electrocatalytic activity of perovskite (La,Sr)TiO3 materials.
Daphnia Pulex의 현장적용을 위한 최적의 배양조건 연구
이종준 ( Jong Jun Lee ),김태훈 ( Tae Hoon Kim ),권동민 ( Dong Min Kwon ),박재로 ( Jae Ro Park ),최이송 ( I Song Choi ),오종민 ( Jong Min Oh ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.1
Recently, algae concentration in the river and lake has been increasing continuously and in a rapid speed. Algae can be a discomfort to people and the secretion of toxic substances can adversely affect the ecosystem. There is a need to develop and apply improved water quality technologies in the environment to help to reduce the confusion that provoke the algae in the ecosystem. We studied the optimal conditions of Daphnia to apply it in the field of water improvement, by determining the optimum conditions that can be cultured in Daphnia, via the control of oxygen supply temperature and food to apply in fields of culture techniques. In this study it was found that the best set feeding food is 22 ml, with a final population of 1960 inds/L. In the aeration of the experiment, it was found that the most efficient DO concentration was 5.2 mg/L with an individual number of Daphnia of 1,200 inds/L. Regarding the water temperature, it was found that a range from 24℃ to 26℃ was the most appropriate the temperature of room cultured that doesn`t effect the scattering to increase the activity was determined to be 25℃.
이종준(Lee, Jong-Joon),장경호(Jang, Kyung-Ho) 영남대학교 산경연구소 2010 영상저널 Vol.3 No.1
예측불허의 급변하는 경쟁 환경속에서 부가가치 창출의 핵심요소로 인사 정보시스템(e-Human Resource Management)의 가치가 새롭게 부상되고 있으며 정보, 혁신, 그리고 아이디어 창출 등 탁월한 인사자원 정보시스템의 확보가 기업의 성과를 좌우하게 된다. 이러한 현실을 감안해볼 때, 본 연구에서는 경쟁력을 갖춘 인사 정보시스템을 구축을 위해서는 인사자원 정보시스템을 사용자들의 욕구와 기대는 물론 깊은 이해와 연구가 요구되며, 그들이 어떻게 인사자원관리 시스템을 이용하고, 활용하는지를 알아야 한다. 또한 인사자원 관리시스템을 이용하는데 있어서 숙련도, 보상, 품질의 만족도 및 재이용 의도에 어느 정도에 영향을 미치는지를 연구 해보고, 이용자 행태의 효율적인 활용방안의 도출과 향후 인사자원 관리시스템 구축과 활성화의 계기를 만드는데 실무적 시사점을 제공하고자 하였다. The value of e-Human Resource Management is bobed up new in the environment of the fast change and a tough prediction. The insurance of prominent e-Human Resource Management such as information, innovation and idea of creation influences the result of a company. When it considers the actuality, to build e-Human Resource Management with global competitiveness, the user of e-Human Resource Management has to understand and study e-Human Resource Management and to know how they use e-Human Resource Management. In using e-Human Resource Management, we have to study that skill, reward, satisfaction of quality have an effect on an intention of the reuse.
이종준(Lee, J.J.),차규상(Cha, K.S.),손정락(Sohn, J.L.),김동섭(Kim, T.S.) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
Integrated Gasification Combined Cycle (IGCC) power plant converts coal to syngas, which is mainly composed with hydrogen and carbon monoxide, by the gasification process and produces electric power by the gas and steam turbine combined cycle power plant. The purpose of this study is to investigate the influence of the syngas to the performance of a gas turbine in a combined cycle power plant. For this purpose, a commercial gas turbine is selected and its performance characteristics are analyzed with syngas. It is found that different heating values of those fuels and chemical compositions in their combustion gases are the causes in the different performance characteristics. Also, Changing of turbine inlet Mass flow lead to change the turbine matching point, in the event the pressure ratio is changed.
이종준(J. J. Lee),윤재은(J. E. Yun),김동섭(T. S. Kim) 한국유체기계학회 2005 유체기계 연구개발 발표회 논문집 Vol.- No.-
This study aims at evaluation of component performance of a commercial micro gas turbine by detailed measurements of various system parameters. A test facility to measure performance of a micro gas turbine was set up. Performance parameters such as turbine exit temperature, exhaust gas temperature, engine inlet temperature, compressor discharge pressure and fuel flow rate were measured. Variations in measured data and estimated performance parameters were analyzed. In addition to overall engine performance, component characteristic parameters including the turbine inlet temperature, the compressor efficiency, the turbine efficiency, the recuperator effectiveness were estimated. Behaviors of the estimated characteristic parameters with operating condition change were examined.
이종준(Jong Joon Lee),윤재은(Jae Eun Yun),김동섭(Tong Seop Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Operation of a 30㎾ class microturbine was simulated on the basis of component characteristic parameters obtained from performance test. Characteristic parameters, such as turbine inlet temperature, compressor and turbine efficiencies, recuperator effectiveness and generator efficiency, was obtained for a wide operation range using analysis based data reduction of the test result. Component characteristics such as performance maps and characteristic curves were generated using those data. Based on the component characteristics, operation of the microturbine was simulated for various operating condition and compared with measured performance parameters. The data obtained from the test and the simulation program will be used for performance diagnostics study.