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한경희(K.H. HAN),이화진(H.J. LEE),이나영(N.Y. LEE),장혜영(H.Y. JANG),이병송(B.Y. LEE),백수현(S.H. BAEK) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.4
A powered system with fuel cell is regarded as a high current and low voltage source. Effects of the loads on the electrical power source are important to optimize the integrated power system. The design parameters of the system should be chosen by taking into account the characteristics of the fuel cell, so the costs of the power system at given operating conditions can be reduced. Furthermore, the dynamics characteristic of the system is crucial to acquire performance in applications, particularly interactions between loads and the fuel cell system. Currently, no integrated simulation has been approached to analyze interrelated effects. Therefore, the dynamic models of power conversion system with a PEM fuel cell that includes the PEM fuel cell stack, DC/DC converter and associated controls is developed. Electric lads for the system are derived by using a power theory that separates a load current into active, reactive, distortion or a mixed current component. Dependency of the DC capacitor on the loads are analyzed.
김명선,김주리,김휘주,손유진,신하늘,이나영,정다영,채유미,최지연,김미영,김태연 이화여자대학교간호학회 2020 이화간호학회지 Vol.- No.54
Purpose: The purpose of this study was to explore what nursing students have experienced in carrying out team projects and what factors should be considered in the following team projects. Methods: The data were collected from June 2019 to January 2020 by nine researchers conducting a semi-structured and face-to-face interview with 10 participants. A total of three interviews per participant were conducted respectively, and additional datas were supplemented by In-person or telephone interview. This study was applied qualitative content analysis method by Elo and Kyngas in data analysis process. Results: Participants' team project experience were emerged into six categories. These were ‘method of team organization’, ‘the number of team members’, ‘team leader’, ‘method of communication’, ‘free rider’, and ‘peer evaluation’. Conclusion: This study is meaningful in that it focused on nursing students and explored their team project experience. It is also important that this study suggested that the number of team members, which has not been noted before in other studies, affects the quality of team projects.
김운학,한은경,이나영,임은형,강진숙,최귀령 한국병원약사회 2000 병원약사회지 Vol.17 No.1
The influence of busulfan plasma concentration on outcome of bone marrow transplantation was examined in 10 patients transplanted. All patients received the same regiment of busulfan, 4㎎/㎏/day orally. Plasma concentrations of busulfan during the administration were measured at sampling time. As a result, means of half life, Kd, first-dose AUC, Cpss_(av??), Cpss_(peak) and Cpss_(trough) were 2.184hr, 0.352hr^(-1), 8,876ng·h/㎖, 2,548ng/㎖, 4,161ng/㎖ and 935ng/㎖, respectively. Of patients with high Cpss_(trough) (>1,000ng/㎖), three patients developed increased liver function test value. One patient (Cpss-(trough) 2,002ng/㎖) developed veno-occlusive disease. There was no significant association of plasma concentration with graft vs host disease, infection, regimen-related toxicity. We assume that high Cpss_(trough) may be associated with an increase risk of veno-occlusive disease.