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Byung Ju Shim,Ho Joong Youn,Yong Chul Kim,Woo Tae Kim,Yun Seok Choi,Dong Hyun Lee,Chul Soo Park,Yong Seok Oh,정욱성,Jae Hyung Kim,Kyu Bo Choi,Soon Jo Hong,Seung Eun Jung,Seong Tai Hahn 대한의학회 2008 Journal of Korean medical science Vol.23 No.3
A 17-yr-old young woman was referred to our hospital with a 2-yr history of claudication of the lower extremities and severe arterial hypertension. Physical examination revealed significantly different blood pressures between both arms (160/92 and 180/95 mmHg) and legs (92/61 and 82/57 mmHg). The hematological and biochemical values were within their normal ranges, except for the increased erythrocyte sedimentation rate (83 mm/hr) and C-reactive protein (6.19 mg/L). On 3- dimensional computed tomographic angiography, the ascending aorta, the aortic arch and its branches, and the thoracic and, descending aorta, but not the renal artery, were shown to be stenotic. The diagnosis of type IIb Takayasu’s arteritis was made according to the new angiographic classification of Takayasu’s arteritis, Takyasu conference 1994. Percutaneous transluminal angioplasty with stenting was performed on the thoracic and abdominal aorta. After the interventional procedures, the upper extremity blood pressure improved from 162/101 mmHg to 132/85 mmHg, respectively. She has been free of claudication and there have been no cardiac events during 2-yr of clinical follow-up.
Enzymatic Hydrolysis of$\beta$-Lactam Esters by PLE
심영기,심중윤,조영순,김완주,Shim Young Key,Shim Joong-Youn,Cho Young Soon,Kim Wan Joo Korean Chemical Society 1989 Bulletin of the Korean Chemical Society Vol.10 No.1
Pig Liver Esterase (PLE) which has been known to cleave a broad range of diesters to prepare stereoselective enantiomers is applied to hydrolysis of ${\beta}-lactam$ esters imparting the corresponding acids in various yields.
Bariatric surgery versus conventional therapy in obese Korea patients
Yoon-Seok Heo,Joong-Min Park,Yong-Jin Kim,Seong-Min Kim,Do-Joong Park,Sang-Kuon Lee,Sang-Moon Han,Kyung-Won Shim,Yeon-Ji Lee,Ja-Youn Lee,Jin-Won Kwon 대한외과학회 2012 Annals of Surgical Treatment and Research(ASRT) Vol.83 No.6
Purpose: In Korea, the results of bariatric surgery have not been compared with those of nonsurgical treatment. The purpose of this study was to evaluate the effectiveness and safety of bariatric surgery vs. conventional nonsurgical treatment in severely obese Koreans. Methods: In this retrospective cohort study, we reviewed the medical charts of 261 consecutive subjects who underwent bariatric surgery and 224 subjects who were treated with weight control medication and lifestyle modification therapy between January 2008 and February 2011. Measures of clinical effectiveness, including change in weight (%) and comorbid diseases, and occurrence of complications, were investigated for 18 months after bariatric surgery. Results: Body mass index (BMI) was higher in the surgery group than in the conventionally treated group (mean ± standard deviation, 39.0 ± 6.2 vs. 34.3 ± 3.8). Diabetes was more prevalent in the surgery group than in the conventionally treated group (39.1% vs. 12.9%). The change in weight (%) between baseline and 18 months posttreatment was significantly greater in the surgery group (22.6%) than in the conventional therapy group (6.7%). While 57%, 47%, and 84% of subjects recovered from diabetes, hypertension, and dyslipidemia, respectively, in the surgery group, 10%, 20%, and 24% of subjects recovered from these conditions in the conventional group. Fifty-one subjects (19.5%) in the surgery group reported 61 complications (23.4%). Conclusion: Bariatric surgery in Korea was significantly more effective than conventional treatment for weight loss and recovery from comorbidities such as diabetes, hypertension, and dyslipidemia, with a reasonable complication rate.
KBSI-HVEM 투사렌즈 전류제어에 의한 CCD Camera의 Field of View(FOV) 확장
김영민,심효식,김윤중,Kim, Young-Min,Shim, Hyo-Sik,Kim, Youn-Joong 한국현미경학회 2005 Applied microscopy Vol.35 No.4
초고전압 투과전자현미경 (HVEM)에 장착된 postcolumn 방식의 HV-GIF (high voltage gatan image filter)의 영상기록 장치인 HV-MSC (high voltage multi-scan CCD, $1024{\times}1024$픽셀) 카메라의 결상영역은 현미경 최소 관찰 배율인 2,000배에서 $0.43{\mu}m^2$로서 동일 배율에서 필름 기록영역($2000{\mu}m^2$)에 비해 약 0.02%에 해당하는 매우 적은 영역이다. 이러한 결상 영역 제한성을 개선하고자 투사렌즈 전류조절 기법을 도입하였으며 본 연구의 결과로 HV-MSC의 결상영역은 $112{\mu}m^2$로 비약적으로 증가하였다. 이는 약 8,800배에서 필름으로 기록할 수 있는 영역과 동일하였다. 이와 더불어 투사렌즈 조절에 따른 이미지 변형정도를 약 5%이하까지 허용하고 8,800배 이상에서 필름 기록영역과 동일한 HV-MSC 결상영역을 확보할 수 있는 실험적인 참조곡선을 고안하였다. A FOV (field-of-view) of the HV-MSC (high voltage multi-scan CCD, $1024{\times}1024$ pixels) camera mounted in the post-column HV-GIF (high voltage gatan image filter) has been drastically enlarged by the projection lens current adjustment. An imaging area of the HV-MSC camera obtained at the lowest magnification (2,000x) is $112{\mu}m^2$ which corresponds to the recording area of the film at the magnification of 8,800x, while the achievable recording area is only $0.43{\mu}m^2$ at the same magnification without this technique. Ignoring the image distortion of less than 5%, we have designed an on-site reference graph to estimate projection lens currents for microscope magnifications above 8,800x, where the recording area on the HVMSC is same as that on the film.
김영민,심효식,김윤중,Kim, Young-Min,Shim, Hyo-Sik,Kim, Youn-Joong 한국현미경학회 2007 Applied microscopy Vol.37 No.2
Diffractogram 법을 이용하여 한국기초과학지원연구원에 설치된 초고전압 투과전자현미경(KBSI-HVEM)의 대물렌즈에 대한 구면수차 계수와 분해능을 측정하였다. 측정 정밀도 향상을 위해 획득한 diffractoram을 디지털 처리하였고 각 intensity 분포 그래프를 graphical curve fitting으로 정밀하게 분리하였다. 정밀 측정을 위한 실험적 고려 사항들을 고찰하였고 최적 실험 조건 도출을 위한 방안들을 본 실험을 통해 제안하였다. 실험적으로 측정된 대물렌즈의 구면수차 계수는 $2.628{\pm}0.04\;mm$였으며 이 값은 제조사에서 대물렌즈 설계 시 제안한 $C_s=2.61\;mm$와 거의 일치하는 값이었다. Coefficient of spherical aberration of the objective lens in the KBSI-HVEM was evaluated by diffractogram method. Instrumental resolution was also discussed with this method. In order to improve the accuracy, digital processing and graphical curve fitting for intensity profile of diffractogram were employed. Experimental concerns where the optimal procedure of the measurement con be accomplished for this study were discussed. The spherical aberration coefficient $(C_s)$ was estimated to be $2.628{\pm}0.04\;mm$ from this study, which was almost coincident with the value of the manufacture's suggestion $(C_s=2.65\;mm)$.