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Press-through Package에 의한 소장 천공 1예
김중석 ( Jung Seok Kim ),차재명 ( Jae Myung Cha ),곽민섭 ( Min Seob Kwak ),윤진영 ( Jin Young Yoon ),전정원 ( Jung Won Jeon ),신현필 ( Hyun Phil Shin ),주광로 ( Kwang Ro Joo ),이정일 ( Joung Il Lee ),김혜영 ( Hye Young Kim ) 대한소화기학회 2017 대한소화기학회지 Vol.70 No.5
With an increased use of the press-through package (PTP) tablet, there has also been an increase in mis-swallowing cases, especially in elderly patients. We report a rare case of PTP-induced small bowel perforation and fistula formation with adjacent small bowel in a healthy elderly patient, who experienced persistent abdominal pain of unknown cause. A 62-year-old healthy man was admitted to our hospital with left abdominal pain that started one month ago. Neither abdominal tenderness nor rebound tenderness was present on physical examination. His vital signs and all other test results were within normal limits. However, a 2.5 cm curved radiopaque material within his thickened small intestine was incidentally detected on an abdominal computed tomography. He underwent laparoscopic small bowel resection, which revealed foreign body in the distal small intestine. Edema, perforation, and adhesions with the surrounding tissues were also noticed in the distal small intestine. Foreign body was turned out to be PTP, and this was considered to be responsible for the small bowel perforation and fistula formation. Precautions regarding PTP usage are necessary to prevent inadvertent PTP ingestion and its related complications, such as perforation, especially in the elderly population. (Korean J Gastroenterol 2017;70:261-264)
김중석(Jung Seok Kim),장인배(In Bae Chang) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.5
In this paper the research of interlocking system for the multi compressor operation without! mutual communication between the compressors by installing a daughter board at each compressors which has absolute time conversion algorithm. The CPU at the daughter board counts the elapsed time from the absolute time information which is given by the real time clock chip with using absolute time conversion algorithm. The rank of the compressors are automatically cascaded at every exchanging periods and loading and unloading pressures of each compressors are changed according to the rank status. The operating loads of each compressors can be evenly distributed by this rank exchanging techniques that the life cycle of each compressors can be maintained almost the same. Furthermore, the compressor operating informations such as discharging air pressure, discharging air temperature and motor current consumptions can be monitored by a host computer with the graphic user interfacing software and all informations are stored by spreadsheet formats that it is possible to manage the historical data of each compressors.
과립구집락자극인자 투여로 치료한 범혈구감소증과 피부 박리를 보인 붉은사슴뿔버섯 중독 1례
김중석 ( Jung Seok Kim ),김규원 ( Gyu Won Kim ),정재일 ( Jae Il Chung ),심명기 ( Myoung Ki Sim ),윤기철 ( Ki Chul Yoon ),최용훈 ( Yong Hoon Choi ),이하람 ( Ha Ram Yi ),최인주 ( In Zoo Choi ),심찬섭 ( Chan Sup Shim ),한정호 ( Joung 대한임상독성학회 2015 대한임상독성학회지 Vol.13 No.1
Podostroma cornu-damae is a rare species of fungus belonging to the Hyocreaceae family. Its fruit body is highly toxic, as it contains trichothecene mycotoxins. The morphology is similar to that of immature Ganoderma lucidum, making identification difficult for non-experts. We experienced such a case of a 56- year-old male who picked and consumed podostroma cornu-damae, and consumed. Later that day, he developed digestive system symptoms, including nausea, vomiting, and abdominal pain. He presented to the emergency room (ER), there were no abnormal physical findings, symptoms improved after gastric lavage, and the patient voluntarily discharged himself on the same day. The following day, as the symptoms gradually deteriorated, he was admitted via the ER. He was presented with severe pancytopenia, alopecia, desquamation of skin, and acute renal failure. He recovered without any complications after conservative care, antibiotics therapy, and granulocyte colony stimulating factor administration. The most commonly reported complications of podostroma cornu-damae intoxication were reported pancytopenia, infection, disseminated intravascular coagulation, acute renal failure, etc. since Prevention is especially important because its toxicity can be lethal and there is no particular treatment to date, prevention is especially important. Promotion and education for the public are needed.
Flexible AM-OLED를 위한 OTFT 기술 기반의 MIS 구조 C-V 특성 분석
김중석(Jung Seok Kim),김병민(Byoung-min Kim),장종현(Jong-hyeon Chang),주병권(Byeong-Kwon Ju),박정호(Jungho Park) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
최근 flexible OLED의 구동에 사용하기 위한 유기박막트랜지스터(Organic Thin Film Transistor, OTFT)의 연구에서는 용매에 용해되어 spin coating이 가능한 재료의 개발에 관심을 두고 있다. 현재 pentacene으로는 아직 spin coating으로 제작할 수 있는 상용화된 제품이 없고 spin coating이 가능한 활성층 물질(active material)로 P3HT가 쓰이고 있다. 본 연구에서는 용해 가능한 P3HT 활성층 물질과 여러 종류의 용해 가능한 게이트 절연물(gate insulator, GI)을 사용하여 안정된 소자를 구현할 수 있는 공정을 개발하는 목적으로 metal- insulator-semiconductor(MIS) 소자를 제작하여 C-V 특성을 측정하고 분석하였다. 먼저 7㎜×7㎜ 크기의 pyrex glass 시편 위에 바닥 전극으로 1600Å Au을 증착하고 spin coating 방식을 이용하여 PVP, PVA, PVK, BCB, PI의 5종류의 게이트 절연층을 각각 형성하였고 그 위에 같은 방법으로 P3HT를 코팅하였다. P3HT 코팅 시 bake 공정의 유무와 sprin rpm의 연화에 따른 P3HT의 두께를 측정하였다. GI의 종류별로 주파수에 따른 capacitance를 측정하여 비교, 분석하였다. C-V 측정 결과 PVP, PV A, PVK, BCB, PI의 단위 면적당 capacitance 값은 각각 1.06, 2.73, 2.94, 3.43, 2.78㎋/㎠로 측정 되었다. Threshold voltage, V<SUB>th</SUB>는 각각 -0.4, -0.7, -1.6, -0.1, -0.2V를 나타냈다. 주파수에 따른 capacitance 변화율을 측정한 결과 GI 물질 모두 주파수가 높을수록 capacitance가 점점 감소하는 경향을 보였으나 1~2㎋ 이내의 범위에서 작은 변화율만 나타냈다. P3HT의 두께와 bake 용도를 변화시켜 C-V 값을 측정한 결과 큰 차이는 없었다. FE-SEM으로 관찰한 결과에서도 두께나 온도에 따른 P3HT의 표면 morphology 차이를 확인할 수 없었다. 본 연구에서 PVK와 P3HT의 조합이 수율(yield)면에서 가장 안정적이연서 3.43 ㎋/㎠의 가장 높은 capacitance 값을 나타내고 V<SUB>th</SUB> 값 또한 -1.6V로 가장 낮은 값을 보였다.
분말충진방법과 가공정도에 따른 Ag/BSCCO 초전도선재의 특성
지봉기,김태우,김정호,김중석,주진호 成均館大學校 科學技術硏究所 1998 論文集 Vol.49 No.1
We evaluated the effects of processing variables on interface irregularity. microstructure. and resultant Jc of BSCCC superconductor tape. For the tapes made by PIT technique. the degree of interface irregularity was varied with powder packing methods and forming process variables. It was observed that the degree of interface irregularity of the tape by CIP method was more reduced. compared to that of the tape by ram method. In addition. the degree of interface irregularity was promoted with decreasing the dimension of tape during forming process. As the dimension of wire/tape were changed from diameter of 3.25mm to thickness of 200㎛ during forming process. Jc value was observed to be increased by 10 times. It was likely that the improvenment of Jc was mainly result from the enhanced texturing of 2223 grain. Microstructural investigation showed the degree of texturing was degraded by the existence of both second phases and interface irregularity. If the interface was flat, larger grain size and better texturing near interface were developed compared to those inside superconducting core, The improvements of microstructure near interface may be result of reaction between Ag and superconductor phase.
족관절 골절의 견고한 내고정 후 조기 능동적 관절운동과 체중부하가 예후에 미치는 영향
김종순,이동화,신규석,김중석 대한골절학회 2000 대한골절학회지 Vol.13 No.2
Purpose: Because of the risk of redisplacement after operative treatment of ankle fracture, postoperative immobilization in a plaster cast without weight bearing has often been used. Early weight bearing, however, would no doubt facilitate rehabilitation for many patients and fulfills one of the most important aims of internal fixation. In our study, we compared the clinical and radiological results of cast immobilization with late weight bearing and early weight bearing with ankle exercise. Material and Methods: Forty-two patients, who had ankle fractures treated with rigid internal fixation between February 1996 and January 1998, were randomly assigned to either cast immobilization with late weight bearing (n=20) or ankle exercise with early weight bearing (n=22). Radiologic follow-up was performed for the evaluation of redisplacement and clinical results between the two groups were compared. Result: No postoperative redisplacement was present in either group. After at least 1 year follow-up, no significant differences were found between the two groups in clinical results by Meyer's criteria. Conclusion: We concluded that postoperative early ankle exercise and weight bearing in rigid fixation of ankle fracture may be useful.