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요추 추간판 탈출증의 통증치료시 발견된 유골골종 -증례 보고-
노만석,강훈수,김정호,Ro, Man-Seog,Gang, Hoon-Soo,Kim, Jeong-Ho 대한통증학회 1997 The Korean Journal of Pain Vol.10 No.2
We experienced a case of osteoid osteoma in thoracic vertebra accompanied with herniated nucleus pulposus during the management of back pain. A 32 year old male patient with herniated nucleus pulposus complained of back pain and radiation to right leg. Lumbar epidural block with 1% mepivacaine 5 ml was performed for pain control and it relieved the radiating pain. However patient continued to experience severe exacerated back pain at night which responded to aspirin. Therefore we performed further examination for existence of disease of the spine and diagnosed osteoid osteoma in the right pedicle of T12 vertebra. In conclusion, we recommend physicians when evaluating patients with back pain to be congnizant of possible existence of neoplastic disease of the spine and incorporate it in differential diagnosis.
노만석(Man Seog Ro),강훈수(Hoon Soo Gang),김정호(J 대한통증학회 1997 The Korean Journal of Pain Vol.10 No.2
We experienced a case of osteoid osteoma in thoracic vertebra accompanied with herniated nucleus pulposus during the management of back pain. A 32 year old male patient with herniated nucleus pulposus complained of back pain and radiation to right leg. Lumbar epidural block with 1% mepivacaine 5 ml was performed for pain control and it relieved the radiating pain. However patient continued to experience severe exacerated back pain at night which responded to aspirin. Therefore we performed further examination for existence of disease of the spine and diagnosed osteoid osteoma in the right pedicle of T12 vertebra. In conclusion, we recommend physicians when evaluating patients with back pain to be congnizant of possible existence of neoplastic disease of the spine and incorporate it in differential diagnosis.
분산형전원이 연계된 MVDC 마이크로그리드에서 ±35kV와 5kV DC선로의 절연설계 방안
손만석(Man-Seok Son),진호승(Ho-Seung Jin),노대석(Dae-Seok Rho) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.10
MVDC ±35kV와 5kV 선로 절연설계를 위해 IEC에 제시된 절연거리는 비균질 전계 상태의 내전압과 과도전압, 정상상태 일시 과전압과 반복 첨두전압, 트래킹으로 인한 고장회피에 따라 산출할 수 있다. 또한 요구되는 첨두 내전압 또는 DC 전압을 선정하고 절연에 따른 최소 공간거리와 오염도에 따른 연면거리는 표에 의해 얻을 수 있다. 설비 최고 전압, 정격 단시간 상용주파 내전압, 정격 뇌충격 내전압 1.2/50μs에 따른 최소 당-대지와 상간 이격거리 또한 표에 의해 정할 수 있다. 본 논문에서는 산출된 갑을 근거로 가공전선로와 지중 전선로의 상-대지와 상대상의 이격거리를 산출하였고, 애자와 피뢰기와 종단접속재이 공간거리와 연면거리가 ±35kV와 5kV에 사용되는 기기의 절연에 적합한 갑을 찾고 설계에 반영하였다. 추가하여 실제 적용을 위해서는 선정된 완철, 애자, 피뢰기, 종단접속재, 케이블, 직선접속재를 연결하여 가압시험을 해야 하고, 특히 가공전선로의 구성품들의 강도와 하중에 대한 기계적인 부분의 세밀한 검토가 요구된다.
제왕절개술후 Morphine을 이용한 지속적 정맥내 통증조절시 Tenoxicam의 불완전한 선행진통 효과
김정호,노만석,강훈수,도건호 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.6
Background : The analgesic properties of the nonsteroidal antiinflammatory drugs(NSAIDs) have been attributed to their effects on the peripheral synthesis of prostaglandins. Although the preoperative use of NSAIDs has been increasing because of concerns regarding the side effects of opioid analgesics but results of clinical preemptive analgesia studies remain inconclusive. So, we studied the efficacy of preemptive analgesic effects of tenoxicam, new NSAID, on postoperative continuous intravenous analgesia with morphine. Methods : We studied 40 parturients, undergoing cesarean section, ASA class I or II, randomly divided into two groups. Tenoxicam group were injected tenoxicam 0.3 mg/kg and control group were injected normal saline 3 ml at ten min. before induction. For both groups morphine 0.1 mg/kg was administered as loading dose and 0.015 mg/kg/hr as maintenance dose. We examined verbal quantitative score(VQS) at postoperative 30 min, 1, 6, 12, 24 and 48 hr. Maternal satisfaction, side effects, hepatic and renal function also evaluated after pain control. Results : The values of VQS showed no significant differences between two groups 30 min, 1 and 6hr after start of morphine infusion, but there was significant decrease in tenoxicam group compared to control group 12, 24 and 48 hr after start of morphine infusion(p<0.05). There was no significant difference in maternal satisfaction between two groups and also there were no significant differences in the overall incidences of side effects between two groups. Conclusions : Preoperative single injection of tenoxicam showed incomplete preemptive analgesic effects on postoperative pain control after cesarean section. (Korean J Anesthesiol 1997; 33: 1154∼1158)
Man-Seok Son(손만석),Ho-Seung Jin(진호승),Dae-Seok Rho(노대석),Jae-Ha Ko(고재하) 대한전기학회 2020 대한전기학회 학술대회 논문집 Vol.2020 No.11
MVDC(Medium Voltage DC) distribution system has been on the rise for large transmission capacity with low energy loss, undersea power transmission, and so forth. Recently it has been a key part of renewable energy transmission in the smartgrid. However, in the process of the design and the implementation of the protection for the grid, engineers face the difficulties to find MVDC equipments, especially commercialized protection coordination devices, such as DC hybrid CB, solid state CB, VCB, ACB, MCCB, fuse, power contactors(CTR), etc. And those equipments have generally provided the narrow range of the DC rated voltage and the rated current and the power capacity, and given few types of the protective relay with narrow range. It gives a big restriction to design the protection elements and apply the equipments into the grid. This paper presents the protection coordination methods and prepares the actual application for 5kV MVDC grid with distributed generators(DG). The simulation and calculation have been done, the breakers and contactors are chosen, and the setting values of their protective relays and peripherals are found. Now those equipments are in the process of shipment. All of them will be built into the MVDC grid in the site of Naju in the 5kV grid and the ±35 kV grid.