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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.
상부 소화관 출혈에 대한 HSE 국주에 의한 내시경적 지혈성적에 대한 고찰
박용주 ( Park Yong Ju ),김영철 ( Kim Yeong Cheol ),홍득민 ( Hong Deug Min ),김두섭 ( Kim Du Seob ),윤중근 ( Yun Jung Geun ),이성주 ( Lee Seong Ju ) 대한내과학회 1992 대한내과학회지 Vol.42 No.4
N/A Abstract Background: Hemostasis of upper gastrointestinal bleeding had been tried by various method. Method : Two-hundred-and-eight patients with upper gastrointestinal hemorrhage were treated by endoscopic local injection of hypertonic saline-epinephrine (HSE) solution at our hospital during the 2-year period from February 1989 to January 1991. Result : The 208 cases included 115 gastric ulcers, 36 duodenal ulcers, 28 stomach cancers, 14 Mallory-weiss syndromes, 13 marginal ulers, and other diagnosis. A total of 45 cases (21.6%) had serious systemic diseases such as decompensatory liver cirrhosis, postoperative bleeding, malignant tumors of other organ, cerebrovascular disease and renal failure. In cases without serious systemic disease, permanent and temporary hemostasis were demonstrated in 98.8% and 1.2% respectively. In cases with serious systemic disease, permanent and temporary hemostsis were demonstrated in 68.9% and 17.8% respectively. An apparent hemostatic effect was not evident in 13.3%. Conclusion : Local injection of HSE solution can be repeated in large does and applied for various types of hemorrhage, producing excellent hemostasis.
홍바리(Epinephelus fasciatus) FSHβ와 LHβsubunit의 분리 및 동정
박용주 ( Yong Ju Park ),강형철 ( Hyeong Cheol Kang ),이치훈 ( Chi Hoon Lee ),송영보 ( Young Bo Song ),백혜자 ( Hea Ja Baek ),김형배 ( Hyung Bae Kim ),( Kiyoshi Soyano ),이영돈 ( Young Don Lee ) 한국수산과학회(구 한국수산학회) 2012 한국수산과학회지 Vol.45 No.1
We cloned and sequenced the cDNA encoding the FSHβ and LHβ subunits from the pituitary of the blacktip grouper Epinephelus fasciatus, which regulate vitellogenesis and maturation in vertebrates, to achieve stable and healthy gametes. The full-length cDNAs of FSHβ and LHβ were 571 bp and 617 bp, encoding 120 amino acid (aa) and 147 aa proteins, respectively. The deduced amino acid sequences of FSHβ and LHβ were highly homologous (68-97%) to those of other Perciformes; E. bruneus, Dicentrarchus labrax, Thunnus thynnus, and Pseudolabrus sieboldi. Phylogenetic analysis showed that the deduced FSHβ and LHβ amino acid sequences were categorized as a distinct subunit in the GTHβ family, and are closely related to the teleostei FSHβ and LHβ, respectively. FSHβ and LHβ mRNA exhibited high abundance in the pituitary gland and low in other brain areas, but were not present in peripheral tissues, as determined by RT-PCR.
지역과 함께 하는 방과후학교 : 충남 홍동중학교를 중심으로
박용주(Park, Yong Ju) 한국방과후학교학회 2016 방과후학교연구 Vol.3 No.1
그동안 다양하게 운영 되어온 방과후학교는 긍정적 평가 뿐만 아니라 운영 과정상의 폐해 역시 적지 않다는 지적이다. 최근 ‘방과후후학교 발전 과정과 미래 탐색’이라는 주제로 열린 ‘2015 방과후학교 정책포럼’에서 논의 되었듯이, 방과후학교 운영 주체의 문제와 교육력 향상 기여의 여부 등 많은 부분이 여전히 쟁점 사항으로 남아 있다. 사실 지난 10여년 간 방과후학교는 오로지 학교 안에서, 학교 교사에 의해 운영되는 이로 인한 교육활동으로 고착되어, 교사들의 피로도로 인한 교육력 약화의 원인이 되기도 하였다. 이러한 때에 농촌 소규모 학교의 교육력과 교육 수요자의 만족도를 높이고, 나아가 지역 재생의 역할에도 한 몫을 해온 충남 홍동중학교의 방과후학교 운영 사례가 주목을 받고 있다. 마을 공동체 운영의 성공으로 현재 ‘귀농․귀촌 1번지’로 알려진 충남 홍동 마을, 그 중심에 위치한 홍동중학교는 지난 10여년간 ‘햇살배움터’, ‘햇살배움터교육네트워크’라는 초ㆍ중ㆍ고 연합 방과후학교 운영 시스템을 통하여 ‘지역 인프라를 활용한 생태 친화적 방과후학교’를 안착 시켜왔다. 이는‘포괄적 안전망 구축을 통한 온마을 작업장학교’로서, 돌봄이 필요한 아동, 청소년을 포괄적으로 접근하여 그들의 정서․심리 지원, 생활지원, 학업, 진로지도를 아우르는 방과후학교로서 학교 교사와 마을의 학부모들이 공동의 교육 주체라는 점이 특기할 만하다. 홍동중학교의‘지역사회와 함께 하는 방과후학교’는 현재 여러 가지 요인으로 어려움을 겪고 있는 각급 학교 방과후학교 운영 개선을 위한 시사점을 제공한다. This is a study on the case of operating after-school programs in a small middle school in rural area. The existing specialty/aptitude education, after-school program(elementary), and level-based supplementary learning(high) have been integrated into a term, after-school program since 2006. In fact, such various after-school programs had positive evaluations while also showing numerous cases of harmful effects in the process of its operation. Just as discussed in the recent 2015 After-School Program Policy Forum under the theme of development process and future exploration of after-school programs , many parts including the main operating agents of after-school program and contribution to the improvement of educational power are still left as main issues. For last ten years, after-school programs have been mostly considered as school teachers work, and teachers fatigue became the cause for the weakened educational power. Meanwhile, through the operation of after-school programs with community, Hongdong Middle School has grabbed attention as a desirable case increasing the educational power of small-sized school in rural area and educational consumers satisfaction, and furthermore, regenerating the region. Hongdong Middle School located in the canter of Hongdong village, Chungnam, well-known as the No.1 place for returning to farm owing to the successful operation of its village community provides a great case to small-sized schools in rural areas by sincerely settling down the after-school programs combined with elementary/middle/high schools such as Haetsal Learning Center and Haetsal Learning Center Educational Network for last ten years.