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사과락(絲瓜絡)이 Triton Wr 투여로 유발되는 고지혈증(高脂血證) 예방에 미치는 영향에 대한 실험적 연구
이정석,소경순,정찬길,Lee Jeong-Seok,Soh Kyung-Sun,Jeong Chan-Gil 대한예방한의학회 2002 대한예방한의학회지 Vol.6 No.2
In order to study the effect of Luffae fasciculus vascularis(絲瓜絡) on hyperlipidemia, experimental study was performed on Hyperlipidemia induced by Triton WR-1339. Also the level of Total cholesterol, Triglyceride, HDL-cholesterol, Phospholipid and LDL-cholesterol were measured. The results are summarized as follow: In the model of hyperlipidemia Rats induced by Triton WR-1339, luffae fasciculus vascularis(絲瓜絡) had significantly decreasing effects on total cholesterol, triglyceride, phospholipid, LDL-cholesterol in serum and increasing effects on HDL-cholesterol level in serum but were not significant. These results show that Luffae fasciculus vascularis(絲瓜絡) has significantly inhibitory effects on hyperlipidemia and that it could be clinically applied for hyperlipidemia.
발생영역별 리스크 위계에 따른 투자개발형 해외건설사업의 핵심 리스크 인자 도출 및 평가
이정석,안병주,김재준,Lee, Jeong-Seok,Ahn, Byung-Ju,Kim, Jae-Jun 한국건설관리학회 2012 한국건설관리학회 논문집 Vol.13 No.2
정부는 최근 장기적인 관점에서 해외건설사업의 시장 활성화와 수주 경쟁력 강화에 주력하고 있다. 또한 중동 지방의 플랜트 프로젝트에 집중되어 있는 해외건설시장의 다각화를 추진하기 위하여 투자개발형 사업을 확대하기로 하였다. 하지만 현재까지 투자개발형 사업에 대한 리스크 분석 사례는 미미한 실정이다. 이에 본 연구에서는 투자개발형 해외건설사업들에 대한 리스크 분석의 필요성을 제기하고자 한다. 본 연구의 목적은 해외 투자개발형 사업에 대해서 AHP 및 퍼지이론을 적용하여 핵심 리스크 인자를 도출하기 위한 한 가지 방법론을 제시하는 것이다. 본 연구의 결과로써, 총 37개의 최종 핵심 리스크 인자들이 선정되었고, 이것들에 대한 특성을 분석하였다. 향후 연구에서는 본 연구의 결과를 토대로 해외 투자개발형 사업을 위한 리스크 관리 모델을 제안하고, 이것의 타당성을 검증할 예정이다. The Korean Government recently has been focused on strengthening competitiveness of order and stimulating construction market in the international construction industry. It has planned to extend the ODPs (overseas development projects) in order to diversifying the international construction market of which is domestic construction companies, placing too much emphasis on plant projects of the Middle East. However, literature review of risk analysis in the ODPs shows that the number of case study is several. Therefore, Authors asserted the necessity of risk analysis in the ODPs. The purpose of this study is to suggest a methodology that find KRFs (key risk factors) in the ODPs and analyze them, using AHP and Fuzzy theory. As a result, the 37 KRFs are selected and explained characteristics of them. A future direction of this study is to suggest a risk management model in the ODPs and prove feasibility of it.
경부 2, 3번 피부절을 침범한 Ramsay-Hunt 증후군 1례
이정석,최용석,송은향,김정미,한정호,김두응,Lee, Chung Seok,Choi, Yong Seok,Song, Eun Hyang,Kim, Jeung Mee,Han, Jeong Ho,Kim, Doo Eung 대한임상신경생리학회 2002 Annals of Clinical Neurophysiology Vol.4 No.1
Ramsay-Hunt syndrome is a viral disease associated with peripheral facial nerve paralysis accompany by erythematous vesicular rashs on the ear(zoster oticus) or in the mouth. Based on clinical presentations that indicated involvement of more than one ganglion, the gasserian, geniculate, petrous, accessory, jugular and second and third dorsal root ganglia comprised a chain in which inflammation of a single ganglion could extend to nearby ganglia. A 71-year-old man presented with left. peripheral facial palsy with otalgia, vesicular eruption in $V_2$, $V_3$, C2, C3 dermatome, tinnitus, and hearing loss.
TOFD UT 기법을 활용한 원자로 상부헤드관통부 J-groove 용접부 결함 검출 가능성 평가
이정석,이태훈,김용식,Lee, Jeong Seok,Lee, Tae Hun,Kim, Yong Sik 한국압력기기공학회 2015 한국압력기기공학회 논문집 Vol.11 No.2
A failure or degradation of reactor upper head penetration is a troublesome problem at Nuclear Power Plants. A flaw in the reactor upper head penetration can result in unplanned plant shutdown for repair, and cause serious economic losses on the plants. Consequently, a detection of flaws is a matter of more importance. Until now, only the base metal, not including J-groove weld, in reactor upper head penetration has been inspected in accordance with 10 CFR 50.55a and ASME code case N-729-1 requirements. Accordingly, it is rather difficult to detect manufacturing defects and repair defects in J-groove weld. This paper presents a case study on the application of Time of Flight Diffraction UT technique to examine the J-groove weld in reactor head penetration using reactor head penetration mockup with artificial flaws. We expect that this study result will offer a way to understand the non-destructive examination technology for J-groove weld in reactor upper head penetration.