http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
마찰용접된 Torque Rod의 피로수명 예측에 관한 연구
김도권(Do-Kwon Kim),한근조(Geun-Jo Han),한동섭(Dong-Seop Han),김형훈(Hyung-Hoon Kim) 한국기계가공학회 2008 한국기계가공학회 춘추계학술대회 논문집 Vol.2008 No.-
The torque rod was located at the drive shaft of a bus or truck. The torque rod support the drive shaft and reduce the shock from movement of the drive shaft. In this study, We conducted the structural analysis and fatigue analysis of the friction welded torque rod using the Ansys workbench as a universal analysis program. From the result, the friction welded torque rod satisfied the fatigue cycle criterion demanded from the industry. The thickness difference between the end rod and tube affected the stress distribution of torque rod and that affected the fatigue cycle of the friction welded torque rod.
HPLC를 이용한 농약 carbaryl의 측정법에 관한 연구
김도권,이상한,조만희,김창세 순천향의학연구소 1995 Journal of Soonchunhyang Medical Science Vol.1 No.1
The menasurements of pesticide carbaryl were studied, and the following conditions were proposed as a most good method; 1. These were detected at 222 nm by means of ISCO model 2350. 2. Pesticide carbaryl measurement was performed by means of ISCO model 2350, Spherisorb ODS column, 40% acetonitrile as a solvent, flow rate 1.0 ml/min, and chart speed 0.5 cm/min. 3. The relationships between the concentration and the absorbance of pesticide carbaryl were linear from 0.5 to 5 ppM. 4. Deproteinzation would be used satisfactorily in all of Folin-Wu, trichloractic acid and perchloric acid, and the recovery rate was also satisfactorily for all of them.
L-Spine X-선 촬영에서의 Jelly type 차폐체의 산란선 차폐평가
장희민(Hui-Min Jang),김도권(Do-Gwon Kim),김형빈(Hyeong-Bin Kim),윤준(Joon Yoon) 한국방사선학회 2020 한국방사선학회 논문지 Vol.14 No.7
의료용 X선 방호는 끊임없이 논쟁이 되고 불필요한 피폭을 막으려는 노력은 많은 연구자들의 관심사였다. X선은 환자를 투과하고 영상을 얻기 까지 피사체와 광전효과, 컴프턴산란 등의 상호작용을 하여 산란선을 만든다. 이 때문에 의료방사선 종사자뿐만 아니라 검사를 받는 환자도 환부 외 영역에 불필요한 산란선 피폭을 받게 된다. 이에 본 연구는 본 연구에서는 여성의 인체를 가정하여, 요추정면 검사 조건으로 X선을 팬텀에 조사한 후 유방근처의 산란선과 갑상샘 근처의 산란선을 측정하였다. 이후 jelly type의 차폐체를 제작하여 산란선 차폐 및 방사선감수성이 높은 부위에서 차폐효과를 확인하는 것이 목표이다, 실험결과 차폐체를 적용하였을 때의 갑상선 측정시 평균 0.16 mR, 왼쪽, 오른쪽 유방 측정 시 평균 0.6 mR, 왼쪽 겨드랑이 0.64 mR, 오른쪽 겨드랑이 0.54 mR 의 산란선 평균을 나타내었으며 약 82%의 산란선 차폐효과를 확인 할 수 있었다. 향후 기존 방호도구와 비교하여 Jelly type의 차폐 체와의 요추 검사에서 발생하는 피폭의 차폐율을 비교하여 기존 방호도구를 대체할 방안으로 제시 될 수 있을 것으로 사료된다. There have been continuous controversies on medical X-ray protection and numerous researchers have been trying to prevent unnecessary exposure to radiation. As X-ray passes through the patient and obtains an image, it creates scattered ray due to interactions such as photoelectric effect and Compton scattering with the subject. As a result, both medical radiation staff and patient are exposed to unnecessary radiation on areas other than the target area. In response, this study will be assuming a body of a female, radiating X-ray on the phantom under the conditions of lumbar spine AP test, and measuring scattered ray around breasts and thyroid glands. Then, The experiment results were as follows. After application of non-shielding material, the average of scattered ray was 0.88 mR in thyroid measurement, 3.34 mR, Lt Axillary 3.54 mR, and Rt Axillary 3.03 mR in mamonary measurement but, After application of shielding material, the average of scattered ray was 0.16 mR in thyroid measurement, 0.60 mR, Lt Axillary 0.64 mR, and Rt Axillary 0.54 mR in mamonary measurement showing average scattered ray protection effect of about 82%. This study suggested the manufacturing method of a Jelly-type shielding material, identified the possibilities of researches on mixing various substances with radiology field, and verified the usability of the Jelly-type shielding material as a substitute for existing protection tools.