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젊은 성인에서 흡연에 의한 상완동맥 내피기능의 부전에 관한 연구
이상철,권영주,방덕원,이선해,이보영,김지욱,김영훈,온영근,현민수,김성구 순천향의학연구소 2002 Journal of Soonchunhyang Medical Science Vol.8 No.1
Background and Objectives : Cigarette smoking is a major factor and the most modifiable risk factor for atherosclerosis. Endothelial dysfunction is an early event in atherosclerosis, before the structural change of the systemic arteries. We hypothesized that endothelial dysfunction might be present in the systemic arteries of young adult smokers and that this might be dose-dependent phenomenon. Therefore, we try to certify that smoking is associated with endothelial dysfunction in healthy young adults without other risk factor of atherosclerosis. Subjects and Methods : we studied noninvasively 29 subjects aged 3 to 4 decades without other risk factor of atherosclerosis, they were composed of the two groups, current smokers(n=15) and nonsmokers(n=14). Smoking history varied from 3 to 20 pack years. Using high-resolution ultrasound, vessel diameter and mean flow rate were measured at rest, during reactive hyperemia(with flow-mediated endothelium-dependent dilation), and after sublingual nitroglycerin(NG-induced endothelium-independent vasodilation). Result : Flow mediated endothelium dependent dilation was observed in the control subjects (9.4±3.44%) but was impaired in the smokers(5.8±2.51%)(p=0.004). NG-induced endothelium independent dilation is no difference in all subjects. Conclusion : Cigarette smoking is associated with endothelial dysfunction in healthy young adults.
족저압력분포 측정장비를 이용한 골프 스윙시 족저압 분석
이동기,이중숙,이범진,이훈식,김용재,박승범,주종필 한국운동역학회 2005 한국운동역학회지 Vol.15 No.1
D. K. LEE, J. S. LEE, B. J. LEE, H. S. LEE, Y. J. KIM, S. B. PARK, J. P. JOO. PIantar foot pressure analysis during golf swing motion using plantar foot pressure measurement system. Korean Journal of Sport Biomechanics, Vol. 15, No. 1, pp. 75-89, 2005. In this study, weight carrying pattern analysis and comparison method of four foot region were suggested. We used three types of club(driver, iron7, pitching wedge). This analysis method can compare between top class golfer and beginner. And the comparison data can be used to correct the swing pose of trainee. If motion analysis system, which can measure the swing speed and instantaneous acceleration at the point of hitting a ball, is combined with this plantar foot force analysis method, new design development of golf shoes to increase comfort and ball flight distance will be available. 1. Address acting, forces concentrated in rare foot regions and lateral foot of right foot. Back swing top acting, relatively high force occurred in medial forefoot region of left foot and forefoot region of right foot. Impact acting, high force value observed in the lateral rarefoot region of left foot and medial forefoot region of right foot. Finish acting, force concentration observed on the lateral region and rarefoot region of left foot. 2. Forces were increased in address of right foot with clubs length increased. All clubs, back swing top acting, high force value observed in the lateral forefoot region of right foot. All clubs, in impact, high force value observed in the lateral rarefoot region of left foot and medial forefoot region of right foot. Finish acting, force concentration observed on the rarefoot region in driver and lateral foot region in iron on left foot. 3. Right foot forces distribution were increased in address, back swing top and left foot force distribution were increased in impact, finnish
금 박막의 기계적 물성에 끼치는 두께와 미세조직의 영향
전영선(Young-Sun Jeon),이상주(Sang-Joo Lee),현승민(Seung-Min Hyun),이학주(Hak-Joo Lee) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
We have used Visual Image Tracing(VIT) strain measurement system coupled with a micro tensile testing unit to test thickness and microstructure dependent mechanical behavior of Au film. The advantage using this method is to monitor the real time images of specimen during the test in order to determine its Young’s modulus, yield strength and tensile strength. 0.5, 1 and 2 ㎛ thick films were deposited by sputtering system. Free standing films were prepared through lithography and etching processes. Au films were annealed at 300℃ and 350℃ to achieve microstructure evolution and Focus ion beam (FIB SEM) and transmission electron microscopy (TEM) were employed to characterize grain sizes of films. Thickness and grain sizes dependent mechanical behavior such as stress-strain curve, Young’s modulus and yield strength of Au thin film will be presented.
서영범,김성욱,장재식,강혁주,이중현,윤병구,김욱년,이광헌,이구,유석동,양창헌,이정호,이영현,이창우,서정일 동국대학교 의학연구소 2000 東國醫學 Vol.7 No.-
자가면역성 간염은 대개 만성 경과를 가지며, 혈중 자가면역항체와 혈청 글로불린치의 상승, 그리고 조직학적으로 괴사 염증성 변화를 특징으로 하는 질환으로 아직 정확한 병인이 밝혀져 있지 않은 상태이다. 발병연령은 대개 젊은 영자(15-25세)에서 호발한다. 이 질환은 급성 간염의 임상경과를 보일 수 있으나, 심한 급성 간염이나 전격성 간염으로도 나타날 수 있는데, 이 경우 아주 나쁜 예후를 보인다고 한다. 치료는 자가면역성 간염 임상 경과의 다양성이나 병인, 병리기전의 불확실성에도 불구하고 대개 steroid 치료에 반응하는 것으로 알려져 있으며 대개 80%의 관해율을 나타내며 궁극적으로 간경변으로의 진행을 막을 수 있는 것으로 보인다. 저자들은 58세 남자에서 발생한 급성의 경과를 가지고 심한 황달을 동반한 자가면역성 간염을 경험하였기에 문헌고찰과 함께 보고하는 바이다. Autoimmune hepatitis (AIH) is a chronic necroinflammatory liver disorder of unknown cause associated with circulating autoantibodies and a high serum globulin level. The age of onset of AIH show a peak between the age of 15 and 25 years. AIH can develop and be manifested as acute hepatitis, but severe form of acute hepatitis or fulminant hepatic failure has a poor prognosis. Although AIH is likely to progress from chronic active hepatitis to cirrhosis, steroid therapy can control the disease activity, prolong survival, improve the quality of life , and defer liver transplantation. In the present report we describe a 58-year-old man who admitted because of progressive jaundice and fatigue. He was diagnosed with AIH from laboratory test result showing positivity for antinuclear antibodies, anti-smooth muscle antibodies, and negativity for hepatitis viral markers and from liver biopsy. Steroid therapy, oral administration of prednisolone, was effective in improving the liver function test. Following liver biopsy 6 months after onset shows markedly improved necroinflammatory activity.
김주필(Joo Pil Kim),최한석(Han Seak Choi),이형민(Hyung Min Lee),이형진(Hyung Jeen Lee),이태후(Tae Hoo Lee),심주영(Ju Young Sim),조윤규(Yoon Kyu Jo),조원규(Won Kyu Jo),이준이(Joon Lee Lee) 한국거미연구소 2018 한국거미 Vol.34 No.2
2018년 10월 2일부터 3일까지 경기도 하남시 소재 검단산을 주야로 한국거미연구회 회원 13명(김주필, 최한석, 이형민, 이형진, 심주영, 이태후, 조윤규, 조원규, 이준이, 이현동, 윤혜원, 이광섭, 김형주)이 채집한 결과 22과 43속 56종이 채집되어 이에 보고 발표하는 바이다. From October 2 to 3 in 2018. Koran Arachnological Study members investigated the Spiders in the whole area Gyeonggi-do Hanam-si, and reported 22 Families, 43 Genus 56 Species of spiders. The collected spiders are placed (stored) in the Joo-Pil Spider museum.
김주필(Joo Pil Kim),최한석(Han Seak Choi),이형민(Hyung Min Lee),이형진(Hyung Jeen Lee),이태후(Tae Hoo Lee),심주영(Ju Young Sim),조윤규(Yoon Kyu Jo),조원규(Won Kyu Jo),이준이(Joon Lee Lee) 한국거미연구소 2018 한국거미 Vol.34 No.2
2018년 10월 13일부터 14일까지 경기도 가평군 소재 화야산을 주야로 한국거미연구회 회원 13명(김주필, 최한석, 이형민, 이형진, 심주영, 이태후, 조윤규, 조원규, 이준이, 이현동, 윤혜원, 이광섭, 김형주)이 채집한 결과 18과 41속 48종이 채집되어 이에 보고 발표하는 바이다. From October 13 to 14 in 2018. Koran Arachnological Study members investigated the Spiders in the whole area Gyeonggi-do Gapyeong-gun, and reported 18 Families 41 Genus 48 Species of spiders. The collected spiders are placed (stored) in the Joo-Pil Spider museum.
서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)
김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1
In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.
Lee, Sang-Mook,Lee, Young-Joo,Lee, Jae-Wook The Polymer Society of Korea 2007 Macromolecular Research Vol.15 No.1
This study investigated the effect of ultrasound irradiation on the blend of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT). The blends of PLA/PBAT(50/50) (PBAT50) were prepared in a melt mixer with an ultrasonic device attached. Thermal, rheological, and mechanical properties, morphology, and biodegradability of the sonicated blends were analysed. The viscosity of the sonicated blends was increased by the ultrasound irradiation owing to the strong interaction. The morphology of the sonicated blends was significantly dependent on the duration o the ultrasound irradiation. For PBAT50, the phase size reduction was maximized when the blends were ultrasonically irradiated for 30 sec. At longer duration of ultrasound irradiation, the PBAT phase underwent flocculation. Measurement of the tensile properties showed an increased breakage tensile stress and an enhanced Young's modulus when the blends were properly irradiated. This improvement was ascribed to better adhesion between the PLA matrix and the PBAT domain and to better dispersion of the PBAT phase. However, the tensile properties were maximized after excessive energy irradiation, which was ascribed to an emulsifying effect leading to coalescence of the PBAT phase. Impact strength was increased to reach a peak with the ultrasound irradiation, and was higher than the untreated sample for all sonicated samples due to the difference of failure mechanism between the tensile test and the impact test.