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외상성 뇌손상환자의 MMPI Profile예 따른 정신과적 증상
이원희,박민철,오상우,박종호 圓光大學校 醫科學硏究所 1997 圓光醫科學 Vol.13 No.1-2
This study was to investigate psychiatric symptoms of patients with traumatic brain injury in the MMPI profile. 88 patients with traumatic brain injury and 45 normal persons were underwent the MMPI and SCL-90-R. The results were as follows. 1) The MMPI profile of patients with traumatic brain injury were different from normal persons. 2) Traumatic brain injury patients were divided into neurotic profile and psychotic profile groups in the MMPI. 3) Group with psychotic profile of traumatic brain injury in the MMPI showed elevated paranoid ideation and psychoticism subscales of SCL-90-R. 4) Group with neurotic profile of traumatic brain injury in MMPI showed an elevated somatization subscale of SCL-90-R. 5) In the scores of GSI and PSDI of the SCL-90-R, group with neurotic profile of traumatic brain injury in the MMPI were higher than normal persons, but lower than the group with psychotic profile of head trauma. Finally, this study of the MMPI profile of traumatic brain injury showed 7-8-6-2 profile and 1-3-2 profile. The group showing 7-8-6-2 profile presented both psychotic and neurotic symptoms and 1-3-2 profile showed an elevated somatization subscale.
직업적 디메틸아세트아미드(Dimethylacetamide) 노출에 의해 집단적으로 발생한 독성간염
최태성,우극현,김진석,박완섭,함정오,정상재,유재영 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.2
목적 : DMAC에 노출된 후 집단적으로 발생한 독성 간염 7례보고. 방법 : 2000년 2월 신설된 스판덱스 섬유제조 공장에 근무하는 생산직 근로자 178명중 2000년 2월 부터 8월까지 7명이 간장질환이 발생하였다. 환례들의 나이는 23∼47세였고, 남자 5명, 여자 2명이었다. 이들에 대해 혈액검사, 간 초음파 검사 등의 임상검사와 작업장 조사를 실시하였다. 결과 : 근무 부서는 중합 1명, 방사 1명, 권취 4명, 그리고 포장 1명이며 평균근무기간은 10주였다. 주 호소 증상은 심한 피로감, 어지럼증 및 황달이었고, 검사실 소견상 독성간염의 소견을 보였다. A, B 및 C형 간염 표지자 검사는 모두 음성이었고, 간초음파 소견상 특이 소견이 없었다. 문진 상 알코올 성 간염을 일으킬 정도의 음주력이나 최근 약물 복용력을 가지고 있는 환례는 없었다. 입원 후 보존적인 치료로 모두 급속히 호전되었다. 초기에 발생했던 환례에서 퇴원후 DMAC에 재 노출되어 독성 간염이 재발되었다. 이후 모든 환례들은 퇴원 후 DMAC 비노출 부서로 전환하였고, 퇴원후 지속적인 추적검사에서 간 효소 수치가 완전히 정상화되었고, 정상화되는 기간은 1∼2개월 정도 소요되었다. 결론 : 환례들의 임상증상, 검사결파, 노출력 및 과거력상 DMAC에 의한 독성간염으로 추정된다. Dimethylacetamide is widely used in the production of plasics, resins, synthetic fibers, and gums and in purification and crystallization processes. Inhalation of the vapor or skin absorption of the liquid of dimethylacetamide (DMAC) can cause liver damage. Toxic hepatitis possibly attributable to DMAC exposure occurred in seven works among 178 employees who had worked on a new spandex-fiber production line. A large amount of DMAC is used as a spinning solvent for synthetic fibers in the factory. The patients were aged 23-47 years old and composed of five males and two females. They were involved in the process of polymerization(1 patient), spinning(1), take-up(4) and packaging(1). The mean duration of exposure was 10 weeks. They experienced fatigue, dizziness and jaundice. The patients showed elavated total bilirubln, alanlne aminotransferase (ALT), and aspartate aminotransferase (AST) levels. The serologic test for viral hepatitis A, B and C were negative, as were the abdominal ultrasonographic scans. Based on the presumptive diagnosis of DMAC-induced toxic hepatitis, they were removed from the workplaces. One or two months after removal from the work, the transaminase levels returned to normal. The patients had no history of significant alcohol use, blood transfusion, recent medication, and drug abuse. As a result, authors could not find any attributable cause of toxic hepatitis but the toxicity by DMAC exposure.
영구자석형 다자유도 구형전동기의 토크특성 분석과 효율 향상에 대한 연구
이호준(Ho-Joon Lee),김용(Yong Kim),장익상(Ik-Snag Jang),박현종(Hyun-Jong Park),강동우(Dong-Woo Kang),원성홍(Sung-Hong Won),이주(Ju Lee) 대한전기학회 2012 전기학회논문지 Vol.61 No.1
A surfaced permanent magnet spherical motor is capable of operating as three degree of freedom that used for the joints of the robot"s arm, leg, and eyes. Ongoing research like new concept is essential part of motor field, it will make a great contribution in the future the overall portion of the motor, is becoming expected. The author analysis torque characteristics in spherical motor with state of rotating and positioning. And future design direction is smaller motors with equivalent or higher output. Solutions as torque and efficiency improvements are selecting the core with special processing type like powder metallurgy materials. Their special characteristic is high permeability and low eddy current losses at high speed, so improved the torque and efficiency.