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김원일,강종표,송지복 경남대학교 신소재연구소 1991 論文集 Vol.1 No.-
최근의 기계가공에서는 고도의 정밀도아 생산성을 함께 요구하고 있다. 일반적으로 정밀도가 높은 가공방법으로는 생산성은 떨어질 것이다. 따라서 생산성과 정밀도를 함께 향상시키는 한 방법으로 초음파 진동절삭을 예로 들 수 있다. 초음파 진동절삭이란 초음파역의 진동을 공구나 공작물에 가진시켜 가공하는 방법으로 본 논문에서는 이러한 방법으로 얻을 수 있는 여러 가지의 효과에 대하여 실험을 통하여 입증하고자 한다. The ultimate target of machining process is to get both precision and productivity simultaneously. To obtain these effects, many kinds of machining methods have been considered and various research effort has been made for a long time. Ultrasonic vibration cutting method is one of these methods. When the ultrasonic vibration is applied on the workpiece or the too, the cutting tool makes periodical contact with workpiece due to vibration. The cutting is performed by vibration impact force while the cutting tool contacts the workpiece, and it makes the displacement of both the tool and workpiece minimum in three cutting force component (principal, axial, radial force) direction during the cutting process. So the cutting precision is better than the the conventional cutting method.
Jong-Nae Hyun,Chon-Sik Kang,Jae-Bok Hwang,Ki-Yeol Chung,Young-Dae Choi,Jong-Tag Youn,Eul-Soo Yun,Jee-Yeon Ko,Ji-Yeon Kim,In-Seok Oh,Sang-Jong Lim 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07
Wheat is one of the most important food crops in the world and provides 20% of nutritional requirement to the consumers in developing countries. The consumption per capita of wheat is persistent but the self-sufficiency has decreased owing to the less competitive world market and double cropping system with rice in Korea. This study was conducted to obtain baseline data on the selection lines with early maturity and good agronomic traits. Geumgangmil, a leading Korean variety, was crossed with CIMMYT’s line, and a DH (double haploid) line was released using pollens of Maize in Mexico. The 71 inbred lines were grown in fields at NICS, Miryang. The culm length of inbred lines were normally distributed from 37cm to 106cm, though that of the P1 (Geumgangmil) was 71 and P2 (CIMMYT’s Line) was 77cm. Especially, some lines were very short and measured below 50cm. The spike lengths of most of the lines were longer than that of P1 (7.5cm), but were normally distributed. The number of spikelet was less than that in P2 (19ea.), but was more than P1(10ea.). The heading day of most of the lines was between P1 (11th April) and P2 (25th April) and the maturity day of the lines was similar to P1 (1st June) but 5 lines showed 2~6 days shorter maturity period than that of P1. However, 20 lines were found to have 2~10 days longer maturity period than that of P2.
Kim, Jong Bok,Choi, Chu Ji,Park, Jin Seol,Jo, Sung Jin,Hwang, Byoung Har,Jo, Min Kyoung,Kang, Daeseung,Lee, Se Jong,Kim, Youn Sang,Baik, Hong Koo WILEY-VCH Verlag 2008 Advanced Materials Vol.20 No.16
<B>Graphic Abstract</B> <P>The vertical alignment of liquid crystal (LC) on an inorganic silicon oxide layer, which is fabricated by a simple photoinduced transformation process of an ultrathin poly(dimethylsiloxane) (PDMS) layer is reported. While the PDMS layer shows a random orientation of LC, the silicon oxide layer, fabricated by UVO treatment, vertically aligns the LC. In addition, the silicon oxide layer shows a stable alignment of LC in harsh conditions. <img src='wiley_img/09359648-2008-20-16-ADMA200702906-content.gif' alt='wiley_img/09359648-2008-20-16-ADMA200702906-content'> </P>
A case report of bleeding from duodenal varices treated with percutaneous transhepatic obliteration
Ji Hyun Lee,Tae Hwan Kim,Jong Won Choi,Sun Young Kim,Jin Young Choi,Chun Kyon Lee,Byung Kyu Park,Jae Bok Chung 소화기인터벤션의학회 2019 Gastrointestinal Intervention Vol.8 No.4
Duodenal varices are ectopic in nature and account for 40% of all ectopic bleeding cases. Ectopic variceal bleeding is rare (1%–5% of all variceal bleeding cases). The three principle approaches used to treat duodenal varices are endoscopic procedures, interventional radiological methods, and surgical interventions. A 59-year-old male with alcoholic liver cirrhosis and chronic hepatitis B infection visited our gastroenterology department with melena. Gastroduodenoscopy and computed tomography identified varices in the second part of the duodenum. We performed percutaneous transhepatic obliteration using glue and coil embolization, which obliterated the varices and resulted in immediate hemostasis. However, 3 months later, he re-visited presenting with newly developed duodenal varices and underwent endoscopic injection sclerotherapy.
( Ji Hae Lee ),( Soohyun Kim ),( You-young Jo ),( Haeyong Kweon ),( Jong Young Jeon ),( Wan-teak Ju ),( Hyun-bok Kim ),( Kee-young Kim ),( Seong-wan Kim ),( Su-bae Kim ) 한국잠사학회 2019 International Journal of Industrial Entomology Vol.39 No.2
Freeze-dried 3<sup>rd</sup> day of 5<sup>th</sup> instar silkworm powder (FDSP) has been produced and consumed as functional food ingredient in Korea. Generally, FDSP is distributed in the dehumidification state. In this study, the effect of humid condition (30%, 50%, 70%, and 90% RH) on the quality characteristics of FDSP was examined. The color of FDSP, greenish yellow, becomes dark with the change of redness and yellowness. When FDSP is exposed for 4 h at 90% RH, the lightness was changed from 56 to 51, redness from -0.8 to 3.7, and yellowness from 26.5 to 21.6. The proximate composition of FDSP was not significantly changed except 90% RH condition. At that condition, moisture content (5.7%) was increased to 26.8% and crude fat (11.3%) decreased to 1.9% (3 wk 90% RH). Mineral content change during storage can be classified to 3 types; sulfur rapidly decreased, potassium mostly stable with some decreased with humidity, and sodium increased with high humid condition. Vitamins were not significantly affected. However, DNJ was abruptly decreased to 0.03 g/100g in humid condition.
A case report of bleeding from duodenal varices treated with percutaneous transhepatic obliteration
Ji Hyun Lee,Tae Hwan Kim,Jong Won Choi,Sun Young Kim,Jin Young Choi,Chun Kyon Lee,Byung Kyu Park,Jae Bok Chung 소화기인터벤션의학회 2019 International journal of gastrointestinal interven Vol.8 No.4
Duodenal varices are ectopic in nature and account for 40% of all ectopic bleeding cases. Ectopic variceal bleeding is rare (1%–5% of all variceal bleeding cases). The three principle approaches used to treat duodenal varices are endoscopic procedures, interventional radiological methods, and surgical interventions. A 59-year-old male with alcoholic liver cirrhosis and chronic hepatitis B infection visited our gastroenterology department with melena. Gastroduodenoscopy and computed tomography identified varices in the second part of the duodenum. We performed percutaneous transhepatic obliteration using glue and coil embolization, which obliterated the varices and resulted in immediate hemostasis. However, 3 months later, he re-visited presenting with newly developed duodenal varices and underwent endoscopic injection sclerotherapy.