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인코넬 718합금 선재의 냉간 인발시 δ 상 저온 석출 현상 연구
박재만 ( Jae Man Park ),김용환 ( Yong Hwan Kim ),장휘운 ( Heui Un Jang ),정원섭 ( Won Sub Chung ) 대한금속재료학회 ( 구 대한금속학회 ) 2012 대한금속·재료학회지 Vol.50 No.7
Low temperature δ-precipitation phenomenon below 2-step aging (718℃, 8 hr + 621℃, 8 hr) temperature of cold drawn Inconel 718 alloy wire was investigated. The investigation was carried out on wires with a cold drawn ratio of 0, 20, 50 and 70% using OM, SEM, XRD, TEM, and DSC. In microstructures of 50 and 70% drawn wire, many precipitates were found along the grain boundaries and the twin boundaries in deformation band. From the results of the XRD and TEM analysis, the precipitates were identified as platelike δ-phase. From the results of the DSC analysis, it was also found that a temperature of δ-precipitation decreases with an increase of the cold drawn ratio. We concluded that cold drawing of inconel 718 wire promotes the δ-precipitation, and under the condition of a high drawing ratio, the δ-phase could be precipitated at a temperature below the aging temperature (718℃).
박석만(Suk Man Park),윤수현(Su Hyun Yun),고상욱(Sang Wook Koh),이동훈(Dong Hoon Lee),김민주(Min Ju Kim),최영훈(Young Hun Choi),박재호(Jae Ho Park) 한국육종학회 2018 한국육종학회지 Vol.50 No.1
새로운 감귤 품종 ‘탐도3호’는 2004년 국립원예특작과학원 감귤연구소에서 ‘청견’(Citrus unshiu × C. sinensis)을 교배모본(종자친)으로 하고 ‘Sunburst’(Citrus reticulate)를 교배부본(화분친)으로 교배하여 얻어진 교잡품종이다. 탐도3호는 2010년에 첫 착과가 되었으며 2012년까지 포장 평가를 실시하였다. 탐도3호의 수세는 강하며 풍산성이다. 열매는 평균적으로 230g이며, 과실의 모양은 작은 봉을 가진 납작한 편구형이다. 착색은 10월 중순부터 시작되어 2월 초에 완전히 착색되며 그 색은 짙은 오렌지색이다. 플라스틱 하우스 재배 시 성숙기는 2월 중순이다. 과실의 당도와 산도는 각 각 14.0°와 1%이다. 과피의 두께는 평균 2.5mm로 온주밀감보다 얇아 과피 벗김이 쉽다. 이 품종은 자가불화합성과 단위결과성이 있어 단독 재배 시 종자가 발생되지 않으나 다른 종의 꽃가루가 수정되면 종자를 형성한다. 탐도3호는 노지 재배 시 과실이 냉해를 받기 때문에 플라스틱 하우스 재배가 요구된다. A new citrus cultivar ‘Tamdosamho’ is a hybrid obtained from a cross of ‘Kiyomi’ (Citrus unshiu×Citrus sinensis, the seed parent) and ‘Sunburst’ (Citrus reticulate, the pollen parent) at the Citrus Research Institute of the National Institute of Horticultural and Herbal Science in 2004. ‘Tamdosamho’ had the first fruit set in 2010 and field evaluation has been conducted until 2012. The tree of ‘Tamdosamho’ was vigorous and had a lot of fruit bearing. The average fruit weight was 230g and its shape was flatten-oblate with a little neck. The fruit peel color was dark orange, and peel coloration began in mid-October and fully developed in early December. The fruit matured in mid-February from cultivation under plastic film house. Total soluble solid and acidity of which was 14.0 °Brix and about 1 % respectively. The thickness of the rind was about 2.5 mm on average and was thinner than that of satsuma mandarin (Citrus unshiu), so removing the peel was easy. This cultivar had characteristic of self-incompatibility and parthenocarpy and didn’t bear seeds from monoculture but if it be fertilized by the pollen of other cultivars could be seedy. In the case of cultivation in the open field, the fruits could be damaged by cold temperature and then ‘Tamdosamho’ is recommended for cultivation under plastic film house. (Variety registration number: 6158)
박재만(Park Jae-Man),김진균(Kim Jin-Kyoon) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(계획계)
The intention of this study is to analyze architect's sketches which embody the concept of ambience in contemporary architecture. The watercolor sketches of Steven Hall have achieved a simultaneously contingent ambience which the perspective drawings can't represent. As a conclusion, ambience in architecture is the most transcendental term for enjoying the architectural presence. The ambiential results are clearly achieved by the concept sketches.
만삭 임신부에서 Misoprostol(PGE1)과 Dinoprostone(PGE2) 질정이 자궁경부 숙화 및 분만유도에 미치는 영향
박태형 ( Tae Hyoung Park ),김경원 ( Kyoung Won Kim ),조재훈 ( Je Hun Jo ),박영복 ( Young Bok Park ),김승만 ( Seung Man Kim ),김도균 ( Do Gyun Kim ),김종호 ( Jong Ho Kim ),양회생 ( Hoe Saeng Yang ),심재철 ( Jae Chul Sim ),윤혜원 ( 대한주산의학회 2001 大韓周産醫學會雜誌 Vol.12 No.3
증례 : 호흡기 ; 양성 전이성 폐 평활근종의 자연 경과
박재만 ( Jae Man Park ),최재성 ( Jae Sung Choi ),나주옥 ( Ju Ock Na ),김용훈 ( Yong Hoon Kim ),서기현 ( Ki Hyun Seo ),오미혜 ( Mi Hye Oh ),조성식 ( Sung Shick Jou ) 대한내과학회 2011 대한내과학회지 Vol.81 No.3
폐에 발생하는 양성 전이성 근종은 과거 자궁 절제술이나 근종 절제술을 시행 받은 가임기 여성에게 호발하는 드문 질환으로 악성의 임상 특징을 가진다. 대부분 무증상이나 일부에서는 마른 기침이나 흉통, 호흡곤란 및 심한 경우 호흡 부전까지 발생하는 등 여러 가지 임상양상을 가진다. 치료는 본 질환이 여성 호르몬과 관련 있어 여성 호르몬을 소실시키는 방법을 주로 사용하고 있다. 저자들은 자궁 절제술과 근종절제술을 시행받은 기왕력이 있는 여성에서 발생한 양성 전이성 폐평활근종 각각 1예를 경험하여 문헌고찰과 함께 보고하는 바이다. Benign metastasizing pulmonary leiomyoma is a rare disease that is usually detected several years after hysterectomy or myomectomy. Recently, we experienced two cases, one with monthly chest pain and the other without symptoms, which were diagnosed with benign metastasizing leiomyoma in the lung. A 48-year-old woman who underwent hysterectomy 12 years earlier was referred to us because of multiple pulmonary nodules on chest radiography, and chest pain for 6 months. Thoracoscopic tumor excision was performed. Pathologically, she was diagnosed with benign metastasizing leiomyoma in the lung. After that, chest computed tomography showed tumors with a progressive reduction in size. The other 48-year-old woman, who had undergone myomectomy for uterine leiomyoma 8 years before, visited our hospital for evaluation of incidentally revealed bilateral multiple nodules on chest radiography. The microscopic finding of percutaneous transthoracic needle biopsy revealed a benign pulmonary metastasizing leiomyoma originating from uterine leiomyoma. Multiple nodules on chest radiography were more increased than those performed 1 year and 3 months prior to admission. However, chest X-ray showed tumors that had progressively decreased in size at 6 months after diagnosis of menopause. (Korean J Med 2011;81:387-392)