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Updates on the Facilities, Procedures, and Performance of the Accredited Endoscopy Unit
이태희,Jin Young Yoon,Chang Nyol Paik,Hyuk Soon Choi,Jae-Young Jang 대한소화기내시경학회 2019 Clinical Endoscopy Vol.52 No.5
Endoscopic quality indicators can be classified into three categories, namely facilities and equipment, endoscopic procedures, andoutcome measures. In 2019, the Korean Society of Gastrointestinal Endoscopy updated the accreditation of qualified endoscopy unitassessment items for these quality indicators to establish competence and define areas of continuous quality improvement. Here, we presented the updated program guidelines on the facilities, procedures, and performance of the accredited endoscopy unit. Many of these items have not yet been validated. However, the updated program will help in establishing competence and definingareas of continuous quality improvement in Korean endoscopic practice.
대장암 세포가 이식된 동물모델에서 사리장의 항암효과에 대한 연구
이태희(Tae-Hee Lee),송현경(Hyun-Kyung Song),김동윤(Dong-Yoon Kim),이이삭(Isaac Lee),서형호(Hyeong-Ho Seo),최지영(Ji-Young Choi),김홍근(Hong-Geun Kim),최은아(Eun-A Choi),한범석(Beom-Seok Han) 한국식품과학회 2018 한국식품과학회지 Vol.50 No.4
본 연구는 사람유래 대장암세포가 이식된 동물모델을 사용하여 사리장의 항암효과를 확인하기 이하여 수행하였다. 사리장은 죽염과 서목태, 마늘과 유근피를 혼합 추출한 물질로써 아이소플라본을 포함하고 있으며 항염, 항산화 등의 효능이 보고된 물질이다. 이러한 사리장을 종양이 이식된 동물모델에 4주간 투여하면서 종양 크기의 변화, 종양 성장인자의 변화와 사리장의 안전성을 평가하였다. 그 결과 사리장은 종양의 크기를 감소시켰으며, 종양 성장과 관련된 ERK와 p16의 발현량을 조절함으로써 종양의 성장을 억제하는 효과를 나타냈다. 또한 사리장을 투여한 시험군에서는 체중, 장기무게, 혈청생화학적검사와 조직학적 검사에서 독성으로 인한 변화가 관찰되지 않았다. 이러한 결과는 사리장이 장기복용이 가능한 항암 보조식품의 소재로써 활용될 수 있다는 것을 의미한다고 할 수 있다. The current study was conducted to confirm the anti-cancer effect of Sarijang, which is a mixture of extracts from purple bamboo salt, Rhynchosia nulubilis, garlic, and Ulmi cortex. Nude mice were injected with a human-derived colorectal cancer cell (HCT116 cell line) and subsequently administered Sarijang for 4 weeks, following which the body weight, organ weight, and tumor size were measured. To evaluate the anti-cancer mechanism of Sarijang, the levels of p- 16 and extracellular signal-regulated kinase (ERK), cell cycle regulators in colorectal cancer, were measured. To evaluate the toxicity of Sarijang on liver and kidney, aspartate transaminase, alanine transaminase, blood urea nitrogen, and creatinine were analyzed. Sarijang not only reduced the tumor size by enhancing p16 and suppressing ERK, but also showed no side-effect in the liver and kidneys. Taken together, Sarijang has the potential to inhibit tumor growth without side effects, and may be used as a useful functional food.
SOFC를 이용한 가정용 열병합 발전시스템 개발 및 성능시험
이태희(Lee, Tae-hee),최진혁(Choi, Jin-Hyeok),박태성(Park, Tae-Sung),최호윤(Choi, Ho-Yun),유영성(Yoo, Young-Sung) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.06
KEPRI has studied planar type SOFC stacks using anode-supported single cells and kW class co-generation systems for residential power generation. A 1kW class SOFC system consisted of a hot box part, a cold BOP part and a water reservoir. A hot box part contains a SOFC stack made up of 48 cells with 10{times}10cm² area and ferritic stainless steel interconnectors, a fuel reformer, a catalytic combustor and heat exchangers. Thermal management and insulation system were especially designed for self-sustainable operation. A cold BOP part was composed of blowers, pumps, a water trap and system control units. When a 1kW class SOFC system was operated at 750?C with hydrogen, the stack power was 1.2kW at 30 A and 1.6kW at 50A. Turning off an electric furnace, the SOFC system was operated using hydrogen and city gas without any external heat source. Under self-sustainable operation conditions, the stack power was about 1.3kW with hydrogen and 1.2kW with city gas respectively. The system also recuperated heat of about 1.1kW by making hot water. Recently KEPRI developed stacks using 15{times}15cm² cells and tested them. KEPRI will develop a 5 kW class CHP system using 15{times}15cm² stacks by 2010.