http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
급성심근경색에서 Doppler 심초음파도로 진단된 승모판폐쇄부전
정진홍(Jin Hong Chung),황진용(Jin Yong Whang),곽충환(Choong Hwan Kwak),채성철(Schung Chull Chae),전재은(Jae Eun Jun),박의현(Wee Hyun Park) 대한내과학회 1989 대한내과학회지 Vol.36 No.4
N/A In 40 patients with acute myocardial infarction (MI), mitral regurgitation (MR) was determined from the apical 4-chamber and parasternal long-axis views with pulsed Doppler and compared with physical and echocardiographic findings. MR was detected in 19 of the 40 patients (48%) and had a similar frequency in patients with anterior (12 of 24 or 46%) and inferior MI (7 of 14 or 50%). A systolic murmur was heard in 8 of 19 patients with MR detected by Doppler and the murmur was directly related to the degree of Doppler MR, Left atrial and left ventricular (LV) dimensions, mitral annulus circumference and LV ejection fraction were similar in patients with and without Doppler MR. However, the prevalence of Dopopler MR in patients with an LV ejection<30% and/or LV diastolic dimension>5.7cm was 71% (12 of 17) but in those without both it was only 30% (7 % of 23).
이준호(Jun Ho Lee),김경찬(Kyung Chan Kim),한승범(Seung Bum Han),전영준(Young June Jeon),박기수(Ki Soo Park),김창호(Chang Ho Kim),박재용(Jae Yong Park),정태훈(Tae Hoon Jung),조영복(Young Bok Jo),정진홍(Jin Hong Chung),이관호(Kwan Ho L 대한내과학회 1997 대한내과학회지 Vol.53 No.5
N/A Objectives: Mediastinal tumors are not uncommon but almost half of them are asymptomatic because of the potential space of the mediastinum. Recently owing to the routine screening chest roentgenography and frequent chest CT scans the incidence have increased. Mediastinal masses are both benign or malignant. Even benign masses may continue to enlarge and compromise vital organ function or rupture, bleed, and become infected. Mediastinal tumors have their own predilection site. There are different incidences of these masses in adults and children, sexes, and there may be difference in incidence between races. There are only a few reports about these tumors in Korea, and we are interested in the clinical manifestations of mediastinal tumors in Korea, Methods: We retrospectively reviewed medical records of 286 cases of mediastinal tumors which were pathologically confirmed at Keimyung, Kyungpook, and Yeungnam University Hospital in Taegu from 1985 to 1994 but excluded metastatic lesion, tuberculosis, and tumor originated from esophagus, heart, and large vessels. Results: Mediastinal tumors were more frequent in male(60.8%) than female and age distribution was relatively even. Thymoma was most common mediastinal tumor(107 cases, 37.4%). The most common tumor in anterior mediastinum was thymoma (107/212, 50.5%). In posterior mediastinum, neurogenic tumor was the most common(52/67, 77.6%) and teratodermoid tumor was common in middle mediastinum(3/7, 42.9%). The most common symptom was chest discomfort(129 cases, 45.1%) and 67 cases were asymptomatic(23.4%). Benign tumors were more common(175 cases, 61.1%) than malignant tumors. In therapies, complete or partial resections were done in 190 cases(79.8%), chemotherapy or radiotherapy in 71 cases(29.8%), in 24 cases(10.1%) only biopsy was taken without any treatment. Neurogenic tumors have been reported as the most common tumors in western countries and neurogenic and teratodermoid tumor were found to be the most common tumors in the past Korean reports. But thymoma was the most common tumor in this study. Conclusion: Thymoma was the most common mediactinal tumor in this study. And thymoma was the most common tumor in anterior mediastinum neurogenic tumor in posterior rnediastinum and teratodermoid tumor in middle mediastinum
MICRO WAVE OVEN용 마그네트론 구동을 위한 전원장치개발에 관한 연구
오덕진(Duck-Jin Oh),김희준(Hee-Jun Kim),오원석(Won-Seak Oh),정진홍(Jin-Hong Jung),김석기(Seak-Gi Kim),송종화(Jung-Hwa Song) 전력전자학회 1999 전력전자학술대회 논문집 Vol.- No.-
HVT<High Voltage Transformer) have been used to drive a magnetron in a microwave oven, but they have some problems such as heavy weight and low efficiency. To solve such problems of microwave oven power source, voltage resonant ZVS-PFM inverters have been developed. This paper presents a high-frequency high-voltage AC-DC converter incorporating high-frequency transformer resonant ZVS-PFM inverter with three-wmdmg transformer and voltage doubler type rectifier for drive high power magnetron. The new power supply makes it possible to realize light weight and high efficiency
이상준(Sang-jun Lee),조은비(Eun-bi Cho),정진홍(Jin-hong Jung),송영규(Young-Kyu Song),조영화(Young-Hwa Cho),이봉수(Bong-Soo Lee),황인주(In-ju Hwang) 융복합지식학회 2018 융복합지식학회논문지 Vol.6 No.2
모듈화는 공사기간, 인력, 물류등 전체 프로젝트 비용에 대한 중요한 이점으로 작용한다. 위와 관련하여 성공적인 모듈화 전략을 세우려면 모듈의 각 형상에 대한 분석을 통해, 플랜트 현장까지 이송이 허용되는 Envelope Size를 기반으로 해야 최적 비용을 실현할 수 있다. 본 논문에서는 캐나다 앨버타 지역의 오일샌드 플랜트 구조물 분석을 통해, 해상 및 육상에 적합한 크기의 단위로 현장운송이 가능한 Envelope Size를 제공하고, 기존에 사용되었던 소재(A36, A572)와 국산 소재(SS400, SM490A, SWH400)에 대해 유한요소기법(Finite Element Method)을 활용한 구조해석을 진행하였고, 해석 결과를 비교분석하여 오일샌드 플랜트 구조 프레임에 적용 가능한 국산 소재를 도출 하였다. Modularization is essentially beneficial to the overall project cost which include construction period, manpower, and logistics. In order to establish a successful modularization strategy, the optimum design should be carried out based on the Envelope Size suitable for the transportation to construction site through structural analysis on each modular form. This process allows optimal cost to us. In this study, the Envelope Size suitable in units for the transportation in sea and land was derived from structural analyses of oil sand plant structures in Alberta, Canada, Structural analysis using Finite Element Method was carried out for the previously used materials as well as domestic materials. Domestic materials applicable to the structural frame of oil sand plants were drawn from comparing results of structural analyses for those materials.
전상중(Sang Joong Jeon),정진홍(Jin Hong Chung),홍경순(Kyung Soon Hong),전재은(Jae Eun Jun),박의현(Wee Hyun Park),박희명(Hi Myung Park),김윤년(Yoon Nyun Kim),김권배(Kwon Bae Kim),장성국(Sung Kug Chang),이종주(Jong Joo Lee) 대한내과학회 1987 대한내과학회지 Vol.33 No.4
N/A The clinical and laboratory features of hypertrophic cardiomyopathy were studied in 30 cases. They consisted of 21 males and 9 females, and the age ranged from 21 to 74 years with an average of 50. The cardinal presenting symptoms were dyspnea, chest pain and palpitation in the order of decreasing frequency. Physical examination revealed apical systolic murmur in 27 cjases (90%), with thrill in 10 (33%), and the routine chest films showed enlargment of cardiac silhouette in 15 cases (50%). Abnormal electrocardiographic findings are noted in 27 cases (90%). Among them repolarization abormalities and left ventricular hypertrophy were the most common, occurring in 71% and 66 % of the cases, respectively, follower1 by left atrial enlargment in 24% and the abnormal Q waves in 20% Among various echocardiographic abnormalities, the mean of septal thickness and its ratio to left ventricular posterior wall thickness were 19 mm and 2,1 respectively, and the mean of the degree of systolic anterior motion of mitral valves was 9 mm. The mean of preejection period and left ventricular ejection time as well as their ratio determined in 10 cases were within normal limits. Out of 20 eases treated with beta or calcium blockers. for a mean of 22 months, 14 (70) experienccd symptomatic improvement. □ (5%) deteriorated and in the remainder (25%) there were no noticeable changes.