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Kim, Young-Sang,Lee, Yunhwan,Chung, Yoon-Sok,Lee, Duck-Joo,Joo, Nam-Seok,Hong, Doohee,Song, Go eun,Kim, Hyeon-Jeong,Choi, Yong Jun,Kim, Kwang-Min Gerontological Society of America 2012 Journals of Gerontology. Series A Vol.67 No.10
<P>Sarcopenia is an important factor of functional impairment related to aging. This study is conducted to investigate the prevalence of sarcopenia and sarcopenic obesity in Korean population.</P>
천연 소재 BF-7의 어린이 장ㆍ단기 기억력 향상 효과
김도희(Do-Hee Kim),김옥현(Ok-Hyeon Kim),여주홍(Joo-Hong Yeo),이광길(Kwang-Gill Lee),박금덕(Geum Duck Park),김대진(Dae-Jin Kim),정윤희(Yoon-Hee Chung),김경용(Kyung-Yong Kim),이원복(Won-Bok Lee),윤영철(Young Chul Youn),정윤화(Yoonhwa C 한국식품영양과학회 2010 한국식품영양과학회지 Vol.39 No.3
본 연구는 BF-7이 어린이의 장기 및 단기 기억을 현저하게 촉진시킴을 보여주었다. 기존 임상 시험 결과를 통해 입증된 바와 같이 천연 소재인 BF-7의 안전성을 고려할 때, BF-7은 어린이 장기 및 단기 기억력, 기억유지도 및 기억의 효과적 활용 등 전반적인 기억 수행 능력 향상에 도움을 주는 매우 안전하면서 효과가 탁월한 천연소재임을 확인하였다. It has been shown that BF-7 enhances short- and long-term memory and attention in normal person. BF-7 was addressed to clinical study for children if BF-7 is also effective to children, since accumulated verification of safety and effectiveness is needed for young ages, in special. We administered BF-7 and a placebo control to two different groups of children (7-12 years old, 9.78 on averages). Their memory enhancement was tested with Rey-Kim Memory Test for Children before and after the administration of BF-7 and a placebo, in a double blinded way. The results showed that long- and short-term memories were significantly improved by the administration of BF-7. Interestingly, the degree of memory preservation, the ability of memory application and awareness of complex thing were also significantly improved. These results indicate that BF-7 is a promising substance from natural resource improving learning and memory of children as well as cognitive function of adults
Development and Test of a Cooling System for a 154 kV Superconducting Fault Current Limiter
Kim, Heesun,Han, Young Hee,Yang, Seong-Eun,Yu, Seung-Duck,Park, Byung Jun,Park, Kijun,Yoo, Jaeun,Kim, Hye-Rim,In, Sehwan,Hong, Yong Joo,Yeom, Hankil Korea Electric Power Corporation 2015 KEPCO Journal on electric power and energy Vol.1 No.1
The superconducting fault current limiter (SFCL) is an electric power device that limits the fault current immediately in a power grid. Korea Electric Power Corporation (KEPCO) has been developing a 154 kV, 2 kA SFCL since 2011 to protect power grids from increasing fault current and improve the stability and quality of electric power. This SFCL adopts 2G YBCO wires and operates at 71 K and 5 bars. In this paper, a cooling system for the 154 kV SFCL and its cooling test results are reported. This cooling system uses a Stirling-type cooler to make sub-cooled liquid nitrogen ($LN_2$), which cools the superconductor modules of the SFCL. The $LN_2$ is circulated between the cooler and the cryostat that contains superconductor modules. The $LN_2$ also plays the role of a high voltage insulator between the modules and the cryostat, so the pressure was maintained at 5 bars for high insulation performance. After installation in a test site, the cooling characteristics of the system were tested. In this operation test, some important data were measured such as temperature distribution in $LN_2$, pressure change, performance of the heat exchanger, and cooling capacity of the total system. Consequently, the results indicate that the cooling system operates well as designed.
고인슐린혈성 저혈당을 보인 성인에서의 Nesidioblastosis 1 예
송영기,이기업,박중열,홍성관,김기수,김홍규,한덕종,민영주,이호정,공경엽 대한내분비학회 1995 Endocrinology and metabolism Vol.10 No.3
Nesidioblastosis is a primarily childhood disease which is often associated with hyperinsulinemic hypoglycemia. It is very rarely found in adults. Only a few well documented cases are found in the world interature. The authors have recently experienced a case of nesidioblastosis in an adult. A 55-year-old man was admitted due to repeated episodes of reversible loss of consciousness. Hyperinsulinemic hypoglycemia was documented. Under the presumptive diagnosis of insulinoma, localization procedures were done but no definite tumor was found. Only suspicious gradient in insulin concentration was found around the head of pancreas by percutaneous transhepatic portal venous sampling. Exploratory laparotomy was performed and Whipple's operation was done. Seventy percent of proximal pancreas was removed. Histomorphometric study of the resected specimen revealed uneven graded hyperplasia of the islet cells with the most profuse hyperplasia in the head region and progressive decrease in the degree of hyperplasia to the body and tail. The patient remains euglycemia until 6 months after operation since immediate postoperative period and can tolerate 24 hour fasting without any medication(J Kor Soc Endocrinol 10: 273-277, 1995).