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      • 생약제제인 이공산(異功散)의 Cisplatin 유도 신장독성 보호 및 항산화 효과

        Lee, Kyung-Tae,Ahn, Kyoo-Seok,Chang, Sung-Goo,Oh, Soo-Myung,Jung, Jee-Chang 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

        Kyung-Tae Lee, Kyoo-Seok Ahn¹, Sung-Goo Chang², Soo-Myung Oh²and Jee-Chang Jung²¹College of Pharmacy, ²Oriental Medicine and ³College of Medicine, and East-West Medical Reserch Institute, Kyung Hee University, Seoul, Korea. Preventive and Antioxidative Effects of Crude Drug Preparation(E-kong-san) on Cisplatin Induced Nephrotoxicity. Proceedings of International Symposium on East-West Medicine, Seoul. 201-211, 1999. -Nephroprotective effects of a crude drug-prearation (E-kong-san) were determined from cisplatin on rabbit kidney proximal tubule and human renal cortical cells by MTT assays and sustained glucose consumption on ciplatin-induced human renal cortical tissue. Levels of creatinine and blood ure nitrogen(BUN) in serum after administration of cisplatin(0.75mg/kg,i.p.) to E-kong-san(0.75g/kg/day,p.o.)-pretreated rats were markedly lower compared to those of cisplatin-treated rats. Moreover, the administration of E-kong-san significantly inhibited the loss of body weight of cisplatin injected rts. These findings suggest that E-kong-san on the cisplatin induced nephrotoxicity led us to investigate whether the effect of this water extract was a result of anti-oxidation. E-kong-san showed strong free radical scavenger activities on 1,1-dipheny1-2picrylhydrazil(DPPH) radical and xanthine/xanthine oxidase(XOD) generated superoxide anion radical(O2-). We further studied the effects of E-kong-san on lipid peroxidation in rat liver microsomes induced by enzymatic and nonenzymatic methods. E-kong-san exhibited significant inhibition on both ascorbic acid/Fe2+and ADP/NADPH/Fe3+ induced lipid peroxidation in rat liver microsomes. Based on these results, we suggest that-E-kong-san attenuate the cisplatin induced cytotoxicity and its mechanism can be eplained by antioxidant.

      • 2자유도 PI 제어기를 이용한 BLDC 전동기의 벡터제어에 관한 연구

        이종현,성낙규,이상집,이승환,오봉환,이훈구,한경희 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

        This paper describes the speed control method of BLDC Motor using TDOF PI ( Tow-degree of freedom PI ). PI control method generally used has difficulty in efficient speed control because speed response and load torque response interfere each other. It can't decrease the overshoot of motor speed w rm, and shorten the response time of load torque TL, at the same time according to the step alternation of speed reference w rm. Therefore TDOF PI is applied to BLDC Motor in order to supply these weak points of PI control method in this paper. TDOF PI can get the torque characteristic of short response time as well as stable and prompt speed adjustment by separate control for speed response and load torque response. The results from the tests of C program simulation and system construction show that TDOF PI is superior to PI control system in speed adjustment and load torque response.

      • KCI등재
      • KCI등재
      • KCI등재
      • KCI등재후보

        한 자동차 제조 사업장의 산업재해 분석

        이경종,박재범,정호근,김종구 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.1

        목 적 : 우리나라 자동차 산업업체의 산업재해 발생 현황을 파악하고 산재예방에 필요한 기초자료를 마련하기 위하여 한 완성 자동차 제조공장에서 1997년도에 발생한 산업재해를 분석하여 다음과 같은 결과를 얻었다. 방 법 : 1년간 산업재해보상보험에 요양 급여를 신청한 근로자들의 재해일지, 건강진단 결과등을 가지고 단면적 연구를 시행하였다. 결 과 : 연령별 재해율은 45-49세 군이 1.6 %로 가장 높았고 35-3971 군이 1.3 %, 40-44세 군, 30-34세 군이 각각 0.9 %, 25-29세 군이 0.6 %, 20-24세 군이 0.4 % 순이며, 근무경력별로는 25년 이상 근로자가 2.7 %으로 가장 높아 연령이 증가할수록, 근무경력이 길수록 재해율이 증가하였다. 작업형태별로는 숙련 작업이 2.3 %로 재해률이 가장 높았고 고정작업이 1.2 % 순 이었다. 작업시간별 발생율은 10-11시(21.4 %)와 오후 2-3시(17.9 %)에 높았다. 요일별로는 금요일(20.5 %), 수요일(17.9 %), 월요일(16.2%), 화요일(15.4 %), 토요일(12.0 %), 목요일(11.1%), 일요일(6.8 %) 순이었다. 월별 발생률은 5월(17.9 %), 3월(11.1 %), 4월(11.1 %) 순으로 봄철이 높았고 8월(10.3 %), 1월(9.4 %) 순이었다. 재해발생 부위는 허리가 41.0 %로 가장 많이 많았고, 다음으로 손가락이 17건(14.5 %), 다리(9.4 %), 손(7.7 %), 머리(6.0 %) 순이었다. 손상 종류별로는 염좌가 38.5 %로 가장 많았고 골절(22.2 %), 요추간판 탈출증(11.1 %), 타박상(9.4 %) 순이었다. 재해의 원인으로는 중량물 취급(34.2 %), 전도(17.1 %), 협착(16.2 %), 낙하비래(6.8 %) 순이었다. 결 론 : 자동차 제조업에서는 중량물 취급과 점심식사 전후나 금요일 등 피로한 시간대에 발생이 많은 근골격계 손상에 대한 주의가 필요해 보인다. Objeetives : To know the present conditions of industrial accidents in automobile facto-ries in Korea and make the basic materials essential to prevention of industrial accidents Methods : We reviewed and analyzed the records of industrial accidents occurred in an automobile factory in 1997 by time of occurrence, job categories (fixed production, skilled trades, mechanical material handling, and clerical & technical), type of injury, kind of accident, and location of injury. Results 1. By age groups, the accident rate was the highest in age 45-49(1.6 %) followed by age 35-39(1.3 %), 40-44(0.9 %), 30-34(0.9 %), 25-29(0.6 %), and 20-24(0.4 %) and by working duration, it was highest in group of experience over 25 years, and so we could see that the more age or working duration increases the more accident rate increases. 2. By work time, the accident rate was the highest in 10-11 a. m. (21.4 %) followed by 2-3 p.m. (17.9%). By the day of the week, it was as follows, Friday(20.5 %), Wednesday(17.9%), Monday(16.2 %), Thesday(15.4 %), Saturday(12.0 %), Thursday(11, 1 %), Sunday(6.8 %) in order. By the month, it was high in May(17.9%), March(11.1 %), and April(71.1 %) followed by August(10.3 %) and January(9.4%) , so we could see it was high in spring. 3. The most frequent injury was in the back by 41.0 % followed by 17 cases in fingers(14.5 %), legs(9.4 %), hands(7.7 %), head(6.0 %) In order. And by the type of Injuries, the sprain was most frequent by 38.5% followed by fracture(22.2 %), lumbar HNP(11.1 %), and contusion(9.4 %) in order. The causes of accident were handling heavy materials(34.2 %), upset(17.1 %), stenosis(16.2 %), and falling(6.8 %) in order. Conclusions : By the above results, to prevent the industrial accidents in automobile factories in Korea, preventive activities for handling heavy materials and back and continuous industrial education are necessary.

      • 太谿穴의 臨床 活用에 대한 文獻考察

        구성태,송문영,강정묵,김용명,박보라,이은석,홍정아,김경식,손인철 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

        Literally, the mean of Tae-gye is highest brook. And on the basis of the acupuncture theory, Tae-gye point is the Soo earth point and source point of the Kidney Channel as well. In addition, Tae-gye point is one of the Yang-Returning Nine points. We were trying to study bibliographically on the Tae-gye point because Tae-gye point can be used very broadly across the symptoms in the theoretical aspect described above. As a results, we found out that according to the classical books of acupuncture, Tae-gye point is entering point of the Meridian Water as a source point and can be used at both Kidney-Sufficient Syndrom and Kidney-Deficient Syndrom. And Tae-gye can be applied to the disease of kidney or bladder that is urogenital symtoms, Also, Tae-gye is an useful option of tooth-ache, asthma, indigestion, constipation, edema etc whose cause is related with decrease of Kidney ki.

      • KCI등재
      • KCI등재

        한국인의 항파상풍 항체 역가

        구홍두,최옥경,장석준,정구영,이정운,김승호 대한응급의학회 1993 대한응급의학회지 Vol.4 No.2

        Inspite of immunization, TETANUS remains a disease with a high morbidity and mortality rate. Tetanus has been still occurred more frequently in developing countries where immunization programs are inadequate. In Korea, there is a routine immunuzation schedule with diphtheria, pertussis, and tetanus(DPT) vaccines at 2,4,6 month after birth at 18 month. But further prophylactic programs are not exist. Moreover, we have usually used only passive immunization, tetanus antitoxin, as a prophylactic regimen for injured patients instead of guidelines of Center for Disease Control. The purpose of this study was to assess the baseline tetanus immunity state and to suggest the proper immunization schedule and adequate prophylactic guideline for injured patients in Korea. One hundred thirty one trauma patients from emergency department of Severance hospital from September to November of 1993 were included. Antietanus antibody titers of the patients were analyzed by ELISA assay. The mean antitetanus antibody titer was 0.728 ±0.236IU/mL. The titers were diminished rapidly with age. In pediatric group(age under 15), the mean titer was 3.251 ±0.426 IU/mL and in geriatric group(age over 64), the mean titer was 0.007 ±0.002 IU/mL which was below the minimal protective antibody titer(0.01 IU/mL). While all of the pediatric patients have protective antibody titer, only 69.2% of young adults(15-39, n=65), 56.7% of adults(40-64, n=30), and 57.2% of geriatrics(>65, n=14) have protective antibody titer. Our results suggest that tetanus prophylaxis is unnecessary in the age under 14. In other age groups, however, our data strongly support the need of prophyulaxis.

      • KCI등재후보

        황화수소 중독증 2례

        김종구,이경종,이세휘,박재범 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.1

        평택시에 위치한 펄프 회사에서 탱크 내부를 청소하고자 근로자가 탱크 속으로 들어가는 도중 의식을 잃었다. 펄프제지 과정에서 유기물질의 발효로 인하여 유해한 가스가 발생한다. 발생할 수 있는 가스의 종류에는 이산화탄소(CO₂), 일산화탄소(CO), 암모니아(NH₃), 황화수소(H₂S) 그리고 메틸 머캅탄(methyl mercaptans, CH₃SH) 등이 있다. 작업환경 측정전 이러한 가스들이 존재할 것으로 추정하였으나 실제적으로 황화수소와 일산화탄소만 검출되었을 뿐 암모니아와 메틸 머캅탄은 측정되지 않았다. 그런데 상기 환자들에 있어서 HbCO이 정상 범주이므로 일산화탄소의 중독은 배제할 수 있었다. 따라서 황화수소 중독에 의한 의식소실임을 알 수 있었다. Hydrogen sulfide poisoning is frequently encountered in the workplace. Two workers lost their consciousness In an underground tank at a factory producing paper. The tank contained liquid mixture of used paper, sodium oxygenate chloride (NaOCl), and sodium thiosulfate pentahydrate(Na₂S₂O₃.□H₂O). A worker(worker A; 36-year-old man) entered tank to remove sludge. When worker A lost his consciousness, worker B entered the tank to rescue worker A, however he lost consciousness inside the tank. We discuss in detail the clinical features of this condition. Hydrogen sulfide poisonings have occurred in industries involving petroleum refining, the manufacture of heavy water, tanning of hides, vulcanization of rubber, and the manufacture of rayon. And it is necessary to stress the health education for workers and managers in these industries.

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