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이동환 ( Dong Hwan Lee ),권소정 ( So Jeong Kwon ),박진석 ( Jin Seouk Park ),우창근 ( Chang Keun Woo ),이창기 ( Chang Ki Lee ),황중하 ( Joong Ha Hwang ),이병기 ( Byung Ki Lee ),이중기 ( Chong Ki Lee ) 대한류마티스학회 1997 대한류마티스학회지 Vol.4 No.2
Relapsing polychondritis is an uncommon disease manifested by episodes of progressive inflammation and destruction of cartilage. While the cause remains unknown, an autoimmune pathogenesis appears likely. Characteristic features include auricular chondritis, arthritis, nasal chondritis, ocular inflammation, respiratory tract involvement and audiovestibular damage. The clinical course of patients may vary from a relatively benign illness free of clinically evident visceral involvement, to one of episodic or smoldering activity with variable intensity, to a fulminant illness and death within months of diagnosis. Dapsone, corticosteroid and immunosuppressive agent remain the effective therapies. We have experienced a case of relapsing polychondritis and active pulmonary tuberculosis in a 69-year-old man. He suffered from arthralgia and swelling of joints for several months on the first admission and initially was diagnosed as pseudo gout based on polyarthritis and chondrocalcinosis of right knee joint. During follow-up, chondritis of both auricles and nose, which was proved by the biosy of right auricle, and relapse of polyarthritis were developed. His sputum smear for acid-fast bacillus was postive on the second admission. Then he was diagnosed as relapsing polychondritis and active pulmonary tuberculosis and has achieved improvement with medication of dapsone and antituberculosis drugs according to susceptability test during followed-up. Thus we report this case with literature review.
답차 및 자전거 Ergometer 운동부하검사의 비교관찰
김경호(Kyung Ho Kim),황중하(Joong Hwa Hwang),이주형(Joo Hyung Lee),배현혜(Hyun Hae Bae),이호영(Ho Young Lee),김용민(Yong Min Kim),김현수(Hyeon Su Kim),이순규(Soon Gyu Lee),이병기(Byung Ki Lee),이중기(Choong Ki Lee),박희명(Hi Myung Pa 대한내과학회 1995 대한내과학회지 Vol.49 No.4
Objectives: For the evaluation of cardiopulmonary endurance, treadmill (TM) and bicycle ergometer (EG) are the most commonly used modes of exercise testing, and the results obtained by these two modes are known to be different. However, it is still controversial that which parameters are how much different. The purpose of our study is to compare two modes of testing in healthy subjects. Methods: Sixty-nine healthy subjects consisting of 34 males and 35 females participated in the study. All the subjects underwent symptom-limited maximal exercise tests by both TM and EG modes at an interval of less than seven days. The TM tests were done by Bruce protocol in both genders, and in the EG tests, work load was increased by 25 watts once every minute for males and 15 watts for females. Results: The maximal heart rate, oxygen uptake and oxygen pulse (HR max, VO2 max & O2 pulse max) by the TM mode of testing were significantly greater than those by the EG mode in both genders, particularly in females. The differences in HR max were approximately 7% and 9% in males and females, respectively, whereas those in VO2 max and O2 pulse max were 11-25%. The VO2, max by TM and EG modes showed highly significant correlation. At maximal exercise, the minute ventilation was significantly different between the two modes, and VE by the TM mode was approximately 15% and 22% greater than by the EG mode in males ad females, respectively. Among variables reflecting ventilatory reserves at maximal exercise, the ratio of VE. max to maximal voluntary ventilotion (MVV) in ;he TM mode was approximately 15% and 22% greater in males and females, repectively. The breathing reserve (MVV-VE max) in the EG mode was approximately 79% and 147% greater in males and females, repectively. The results of these two variables, VE max/MVV and MUV-VE max, are explained by the more marked increase in VE max by the TM mode and denote that the ventilatory reserve capacity at maximal exercise is greater in the EG mode. Conclusion: Our study reveals that the TM mode of maximal exercise testing induces more pronounced cardiopulmonary responses than the EG mode, particularly in females. And this is well manifested by the facts that VO2 max, O2. pulse max and VE- max obtained by the TM mode of testings are 10% or more than those by the EG mode. The HR max by the TM mode was also greater than that by the EG mode in both genders, but its difference was less than 10%.
방조제(防潮堤)의 설계(設計)를 위(爲)한 태풍(颱風)의 분석(分析)
한상욱 ( Sang Wook Han ),이중기 ( Joong Ki Lee ) 한국농공학회 1976 韓國農工學會誌 : 전원과 자원 Vol.18 No.2
The safety of shore structure including the sea dipe is largely affected by typhoon. Accordingly it is desirable to analize the typhoon and determine the wind direction and velocity for use in planning and design of the structure. This method was adopted for the design of the Yong San Gang Estuary Dam. A comparative study of the results of typhoon analysis with the meteorological data obtained through actual observation is summarized as follows; (1) 62% of the typhoons occur during May to June in a year, and 62% of the typhoons which have an influence on the Korean peninsula, especially the proposed estuary dam fsite, proceed eastward through the zone in lat. 36°-37°N. Such typhoons occur two to three times a year on the average. (2) Data on typhoon "SARL" were used as a model case in designing the estuary dam, where it was proved that a southwesterly wind had a maximum velocity of 30m/sec in case r=150km, α=120°. Within the range of 22°30'on the right and left side of the fetch line of the estuary dam, the wind direction varied SSW→SW→WSW, and the wind velocity varied 29m/sec→30m/sec→125m/sec. Such phenomemum lasted for five hours. (3) An analysis of data obtained during 44 years at Mok Po Meteorological Station shows that a wind with a velocity of some 25m/sec occurred twelve times in the S-direction and two times in the SW-direction, while that with a velocity of 30m/sec occurred three times in the S-direction, three times in the SSW-direction and one time in the SW-direction. The wind which had an influence on the estuary dam had a direction of SSW→SW→WSW and a velocity of min. 30m/sec. Actually, a wind with a max. velocity of 31.3m/sec occurred in the SSW-direction on March 15 and 16, 1956 where the mean velocity during two hours was 28m/sec and that during four hours was 24.6m/sec. (4) The data obtained through actual observation show that when the velocity is low, the wind with a fixed direction lasts long, and when the velocity is high, it is short-lived. It is difficult to determine the velocity of a wind which blows in a fixed direction for consecutive two or four hours. Therefore, the values obtained through typhoon analysis are larger that those obtained through actual observation, and hence, it is resonable to use the analyzed valuse for design of the estuary dam and shore structures. (5) The greatest effect was had on the estuary dam when typhoon was proceeding at a velocity of 29.71m/sec in the direction of α=120° (SW) at a point of R=150km from the center of the typhoon.
분리기술 열역학 / 방사방향 전기장에 의한 액체 크로마토그래피에서의 체류시간 변화
김영대(Young Dae Kim),이기용(Ki Yong Lee),이중기(Joong Kee Lee),최광진(Guang Jin Choi),심상준(Sang Jun Sim),우경자(Kyungja Woo),조영상(Young Sang Cho) 한국화학공학회 1999 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.37 No.4
Radial electric field was employed to efficiently control the solute retention times in liquid chromatography. It was observed that the solute retention times were changed by the applied radial electric field. This result indicates that the solute retention times can be controlled by the applied radial electric field strength, suggesting that a novel type chromatography can be developed employing the retention time control by the applied electric field. The change in the solute retention times seems to arise from the changed interactions among solute, solvent, and adsorbent due to the different degrees of their induced polarities.