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Fallot 4징증의 근치수술후 예후에 영향을 미치는 요소
민용일,오봉석,이동준,Min, Yong-Il,O, Bong-Seok,Lee, Dong-Jun 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.1
Twenty six patients were operated a total correction of tetralogy of Fallot between Jan., 1984 and July, 1985 at the Dept. of thoracic and cardiovascular surgery, Chonnam University Medical School, and a comparison between the survived group [n = 18] and the dead group [n = B was performed to detect factors influencing laboratory data, cineangiographic findings, operative findings and methods, and pump time. Following results were obtained, 1. There was no significant difference between two groups in the preoperative P.O2 and hematocrit level. 2. The size of the interventricular defect was not related to the operative mortality. 3. There was a significant difference in mortality rate between combined type of stenosis of pulmonary artery, valve and infundibulum and other types of right ventricular outflow tract stenosis. 4. There was a significant difference in mortality rate between the transannular patch reconstruction and other types of operative procedure. 5. There was no significant difference between two groups in total bypass time and aortic time. 6. There was no significant difference between two groups in left ventricular end diastolic volume and right ventricular end diastolic volume. 7. The operative mortality was related to the ratio of the diameter of the pulmonary valve annulus or each pulmonary artery to the ascending or descending aorta in cineangiographic findings, but there was no statistical significance of which probably is due to the lack of the total number of patients.
민용일,김상형,이동준,Min, Yong-Il,Kim, Sang-Hyeong,Lee, Dong-Jun 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.3
From September 1980 to July 1986, 135 cases of cardiac valve surgery were performed under the cardiopulmonary bypass. Out of 135 cases, single valve surgery was 114 cases including open mitral commissurotomy 17, mitral annuloplasty 2, mitral valve replacement 85, and aortic valve replacement 10 and double valve surgery was 21 cases. There were 68 males and 67 females ranging from 9 to 57 years of age. Early death within 30 days after operation was 17 cases [12.6%] and caused of death were ventricular arrhythmia 5, low cardiac output syndrome 4, excessive bleeding 3, pulmonary complication 2, and so on. Among 118 early survivors, 5 cases [5.1%] of late death were developed over a period of 2 to 72 months, and main cause of death was fatal bleeding complication associated with anticoagulation therapy. Symptomatically, 91.8% of patients were in NYHA functional class I or II at the end of the follow-up.
인태아 폐의 신경상피소체와 신경종말에 관한 미세구조적 연구
민용일,윤재룡,Min, Yong-Il,Yoon, Jae-Rhyong 한국현미경학회 1995 Applied microscopy Vol.25 No.1
Ultrastructure of nerves and their associated cells in the bronchiolar epithelium of the human fetal lung were studied with ultrastructural and immunohistochemical methods. The neuroendocrine cells were scattered along the basal part of non-ciliated respiratory epithelium and appeared as single cell (solitary neuroendocrine cell) or groups (neuroepithelial bodies). The solitary neuroendocrine cells were devoid of any detectable innervation, while the neuroepithelial bodies were associated with nerve ending containing morphologically afferent (sensory) and efferent (motor) intraepithelial terminals. The afferent nerve endings contained abundant mitochondria with long cristae. The efferent nerve endings were characterized by the presence of synaptic vesicles. Both types of nerve endings formed synaptic junction between nerve endings and neuroepithelial bodies cells. Serial sections of the intraepithelial nerves revealed that both morphologically afferent and efferent types of nerve endings may be formed by the same nerve fiber. By immunohistochemistry, bombesin and serotonin were localized in solitary neuroendocrine cells and neuroepithelial bodies of human fetal lung from various prenatal age groups. These results suggest that the neuroepithelial bodies cells of the human fetal lung have neuroreceptor function.
변형 Fontan 술식을 이용한 선천성 심기형증 치험 2
민용일,안병희,이동준,Min, Yong-Il,An, Byeong-Hui,Lee, Dong-Jun 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.3
Recently, direct atriopulmonary anastomosis was performed in 2 patients without using pericardium or prosthetic material. Case 1 A 13-year-old male patient whose diagnosis was tricuspid atresia [type lb] received direct atriopulmonary anastomosis successfully with good clinical and hemodynamic results. Nine months after operation, he has an increased exercise tolerance. Case 2 A 4-year-old female patient whose diagnosis was DORV with pulmonary atresia in A-V discordance had a formidable surgical challenge. A large-diameter direct atriopulmonary anastomosis was performed after the closure of the right atrioventricular valve. Her postoperative course has been even in 20th postoperative day.
심실중격결손이 동반되지 않은 신생아 대혈관전위증에서의 Jatene 술식 -수술치험 2례-
오봉석,김보영,민용일,O, Bong-Seok,Kim, Bo-Yeong,Min, Yong-Il 대한흉부심장혈관외과학회 1994 Journal of Chest Surgery (J Chest Surg) Vol.27 No.5
신생아에서 심실중격결손을 동반하지 않은 대혈관전위증 (Transposition of th egreat arteries with intact ventricular septum)의 해부학적교정은 저체중등의 외과적 위험인자에도 불구하고 심방내 교정보다 생리적이다는 점에서 선호되고 있고 조기수술성적이 향상되었다고는 하나 아직도 국내사망율은 높은 편이다. 저자들은 최근 3.5Kg(생후 19일), 3.6 Kg(생후 16일)된 신생아에서 Jatene operation 2례를 치험하였기에 보고하는 바이다.
류현호,이병국,정경운,허탁,민용일,Ryu, Hyun-Ho,Lee, Byeong-Guk,Jeung, Kyung-Woon,Heo, Tag,Min, Yong-Il 대한임상독성학회 2009 대한임상독성학회지 Vol.7 No.1
Hydrogen sulfide is a by-product of decayed organic material and is ubiquitously found as an ingredient of manufacturing reagents or as an undesirable by-product of the manufacturing or industrial processing. Hydrogen sulfide is a chemical asphyxiant and interferes with cytochrome oxidase and aerobic metabolism. It has thus been deemed an important cause of work-related sudden death. This gas is particularly insidious due to the unpredictability of its presence and concentration and its neurotoxicity at relatively low concentrations, causing olfactory nerve paralysis and loss of the warning odor. Here, we report two cases of comatose patients presenting after accidental exposure to hydrogen sulfide gas.
군간부 숙소에 적용된 중용량 및 멀티 보일러 시스템의 난방 및 급탕에너지 비교
김민용(Min-Yong Kim),김영일(Young Il Kim),정광섭(Kwang Seop Chung) 한국지열·수열에너지학회 2014 한국지열에너지학회논문집 Vol.10 No.3
Heating and hot water supply energy consumption of medium and multi boiler systems applied to military officer housing are compared with in-situ experiment and TRNSYS dynamic simulation program. In a multiple boiler system, small capacity boilers are connected in paralled to meet the required capacity. For handling partial loads, medium capacity boiler relies on on-off control, while multi boiler adopts PI control. Since multi boiler has higher efficiency and better control strategy, the results show that energy consumption can be reduced significantly with the multi boiler system.
김민용(Min-Yong Kim),김영일(Young Il Kim),정광섭(Kwang-Seop Chung) 한국지열·수열에너지학회 2011 한국지열에너지학회논문집 Vol.7 No.1
Due to enhanced sealing and insulation of buildings, extensive use of glasses for building envelopes and increased use of heat generating office equipments, energy consumption of modern buildings for cooling is steadily increasing. With outdoor air cooling(ODAC) system, cooling load can be reduced by exchanging indoor air with the cold outdoor air during spring and fall seasons. If ODAC is operated based only on temperature, total cooling load may virtually increase if the outdoor humidity is high. To overcome this problem, ODAC should be controlled based on enthalpy. In this work energy saving characteristics of enthalpy controlled ODAC is studied using dynamic simulation. The result shows that cooling load can be reduced by 27% by adopting ODAC.
Alkaline protease inhibitor를 생산하는 해양유래 방선균의 탐색 및 동정
강성일(Sung-Il Kang),공재열(Jai-Yul Kong),최영준(Yeung Joon Choi),김민용(Min-Yong Kim),손홍주(Hong-Joo Son) 한국생명과학회 2008 생명과학회지 Vol.18 No.4
Alkaline protease는 식품 가공 공정에 있어 가공 원료의 선도 저하를 초래하거나 맛살류 제품 원료인 어류의 근육조직을 파괴하여 gel 구조를 파괴시키는 것으로 알려져 있다. 본 연구는 해양으로부터 alkaline protease에 대한 저해력을 가지는 방선균들을 분리하여 그 중 저해력이 가장 높은 C12 균주를 최종 선정하였다. 본 균주의 형태학적, 배양적 및 생리학적 특성을 조사한 결과, 포자의 크기는 2.0 ㎛로 외형은 원통형이고, 편모가 없으며, 포자형태는 smooth하였다. ISP 9 배지를 제외한 대부분의 배지에서 잘 성장하였다. 또한 15~50oC에서 잘 성장하였으며, 9% (w/v) NaCl이 포함된 배지에서도 성장하는 것으로 확인되었다. Gram 양성, citrate 음성, catalase 양성이었으며, melanin 색소를 생성하지 않았다. Starch, casein 및 gelatin 분해능이 있었으며, glucose, galactose, maltose, lactose, fructose 및 mannse 등은 잘 이용하였지만, sorbitol과 sucrose는 이용하지 않았다. 이러한 특성을 토대로 본 균주는 Streptomyces sp.로 확인되었다. 보다 정확한 균주 동정을 위하여 16S rDNA 염기서열 분석을 수행하였으며, 그 결과 C12 균주는 S. thermocarboxydus와 계통진화학적으로 가장 유연관계가 높았다. In this study, we screened and identified the bacterial strain showing high alkaline protease inhibitor activity from marine environment. Nine bacterial strains with alkaline protease inhibitor activity were isolated from marine sediments. Among them, strain C12 had the highest alkaline protease inhibitor activity and was selected for further taxonomical study. On the basis of morphological and physiological characteristics, strain C12 was identified as the genus Streptomyces. A phylogenetic analysis of the 16S rDNA showed that the isolated strain was actually a member of the genus Streptomyces, because the determined sequence exhibited a higher homology with Streptomyces thermocarboxydus. Morphological characteristics showed cylindrical spore chain and smooth spore surface by scanning electron microscope. Strain C12 was grown on all media except for ISP 9 agar. This strain could be grown in the medium containing up to 9% NaCl.