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충전율의 변화가 밀폐형 2-상 열사이폰의 열전달 특성에 미치는 영향에 관한 연구
박용주,홍성은,김철주,Park, Yong-Joo,Hong, Sung-Eun,Kim, Chul-Ju 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.12
A two-phase closed thermosyphon was one of the most effective devices in the removing heat because of its simple structure, thermal diode characteristics, wide operating temperature range and so on. In this study, a two-phase closed thermosyphon(working fluid PFC(C6F14), container copper(inner grooved surface)) was fabricated with a reservoir which can change the fill charge ratio. The experiments were performed in the range of 50~600W heat flow rate and 10~70% fill charge ratio. The results were compared with some correlations that were presented by Rohsenow and Immura et al. in the evaporator, by Nusselt, Gross and Uehara et al. in the condenser and by Cohen and Bayley, Wallis, Kutateladze and Faghri et al. in heat transfer limitation etc.. The heat transfer coefficient at the evaporator increased with the input power. However the effect of the fill charge ratio was nearly negligible. At the condenser, it showed an opposite trend to the evaporator and with increase of the fill charge ratio, showed some enhancement of heat transfer. The heat transport limitation was occurred by the dry-out limitation for small fill charge ratio(10%) and presented about 100W. For the case of large fill charge ratio(Ψ$\geq$40%), it was occurred by the flooding limitation at about 500W.
베이커리 서비스스케이프가 긍정적 감정반응과 장기관계지향성에 미치는 영향 - 라포형성행동을 조절효과로 -
박용주 ( Park Yong-joo ) 한국호텔리조트학회(구 한국호텔리조트카지노산학학회) 2021 호텔리조트연구 Vol.20 No.3
This study has visited bakery companies in Seoul, Gyeonggi, Cheongju, and Gwangju for the purpose of verifying the effect of the bakery company's servicescape on Positive emotional response and long-term relationship orientation and examining the moderating effect of employees' rapport-building behavior It was conducted for customers. A total of 220 copies were distributed from May 1st to May 30th, 2021, and a total of 193 questions were answered as data for verification of this study. Respondents used the nominal scale for general items, and the Likert 7-point scale for questions for hypothesis testing. You will have to set up a service environment. In addition, the need for efficient operation is raised by first checking the accessibility, aesthetics, and cleanliness of the servicescape in order to enhance the bakery's long-term relationship orientation, and it is judged that coordination and convenience are necessary factors for restaurants and coffee cafes rather than the bakery servicescape field. Lastly, by emphasizing polite behavior through the training of employees at the bakery, they approach customers and provide a lot of information. Having the right behavior will increase customer Positive emotional response and long-term relationship orientation.
재발성 상피성 난소암 환자에서 Gemcitabine 단독 항암화학요법을 사용한 4예
박용주 ( Yong Joo Park ),이철민 ( Chul Min Lee ),서형주 ( Hyung Joo Seo ),이혜주 ( Hye Joo Lee ),김정선 ( Jaung Sun Kim ),고지경 ( Ji Kyung Ko ),조용균 ( Yong Kyoon Cho ),최훈 ( Hoon Choi ),김복린 ( Bok Rin Kim ),이홍균 ( Hong Ky 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.11