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김길동,한영재,박현준,이사영,Kim, Gil-Dong,Han, Young-Jae,Park, Hyun-June,Lee, Sa-young 한국철도학회 1999 한국철도학회논문집 Vol.2 No.1
This purpose of this paper is to perform the readhesion control algorithm of the urban railway traction. A study on readhesion control algorithm is done for the adhesion system. This system has all characteristics of the voltage source converter by a process ability to regenerate power. The traction motor is controlled by IGBT inverter. The test equipment composes traction motor, torque-meter, clutch, and a tubular type of interia mass.
하지전신계측검사에서 자세의 변화에 따른 방사선량 및 영상평가
김영천(Yeong cheon Kim),송종남(Jong nam Song),최남길(Nam gil Choi),정연(Yeon Jeong),한재복(Jae bok Han) 한국방사선학회 2014 한국방사선학회 논문지 Vol.8 No.7
하지전신계측검사(low extremity teleography)에서 자세 변화에 따른 중요장기의 방사선량을 측정하고 영상을 비교ㆍ분석하여 검사방법에 따른 유용성을 알아보고자 하였다. 대상은 하지전신계측검사를 시행한 성인남자 10명을 대상하였고 촬영조건은 관전압 73 kVp, 관전류량 32 mAs, SID 180 cm로 설정하였다. 방사선량 측정은 란도 팬텀을 이용하여 수정체, 갑상선, 생식선 부위에 유리선량계(glass dosimeter)를 부착한 후 전후방향자세와 후전방향자세를 각각 5번씩 시행하여 부위별로 방사선량을 측정한 후 Paired T-test로 비교ㆍ분석 하였다. 영상평가는 전후방향자세와 후전 방향자세를 시행한 영상을 blind test를 실시하여 5점 척도로 평가하였다. 결과적으로 전후방향자세검사에 비해 후전 방향자세검사가 수정체 약 6%, 갑상선 약 6%, 생식선에 미치는 방사선량을 약 27% 감소시킬 수 있으며 영상평가에서도 두 그룹 간에 큰 차이가 없어, 하지전신계측검사에서 전후방향자세검사보다 후전방향자세검사가 유용할 것으로 사료된다. In this study, radiation doses of major organs in various postures in lower extremity teleography were measured and compared to investigate the utility of the test methods. Ten adult males who underwent lower extremity teleography at a tube voltage of 73 kVp, tube current of 32 mAs, and SID of 180 cm. Using rando phantom, glass dosimeter was attached to the eye lens, thyroid gland, and genital gland to measure the radiation dose in each area 5 times in each anteroposterior posture and posteroanterior posture. The results were compared and analyzed through Paired T-test. The images from the anteroposterior posture and posteroanterior posture were evaluated through the blind test on a scale of 5. As a result, the posteroanterior method could reduce the dose than the anteroposterior posture method: less dose for the eye lens by 6%, thyroid gland by 6%, and genital gland by 26%. Since there was no significant difference in image evaluation, the posteroanterior posture is considered better than the anteroposterior posture in lower extremity teleography.
제주지방 돼지의 폐병변으로부터 Pasteurella multocida 분리 및 생화학적 특성
김옥녀 ( Ok Nyeo Kim ),이두식 ( Du Sik Lee ),문호규 ( Ho Kyou Moon ),김우택 ( Woo Taek Kim ),서문현 ( Moon Hyun Seo ),배종희 ( Jong Hee Bae ),임윤규 ( Yoon Kyu Lim ),조길재 ( Gil Jae Cho ) 한국동물위생학회 1995 한국동물위생학회지 (KOJVS) Vol.18 No.2
The present study was conducted to investigate the incidence of Pasteurella multocida infection in cheju swine from March 1994 to December 1994 isolated organisms were identified by the biochemical properties, cellulose serological type and antibiotic susceptibilities. Pasteurella multocida was isolated from the Lungs of 96 pigs with pneumonia(51%) among 188 slaughtered pigs. The majority of p multocida isolates were identical to those of the standard strains. On the classification of the capsular type of the isolated p multocida it consist of the 88 isolates of type A(91.6%) 2 isolates of type D (2%) and un classified 6 types(6.2%). The majority of the 96 isolates of p multocida highly susceptible to the antibiotics including ampicillin(Am), cephalotin(Ce), erythromycin(Em), gentamycin (Gm), kanamycin (Km), lincomycin (Lm), neomycin (Nm), penicillin(Pc), streptomycin(Sm), sulfametoxazol/trimethoprim(Sxt) and tetracycline (Te)