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이덕재,이강우 안성산업대학교 1997 論文集 Vol.29 No.1
The Purpose of this study was to investigate the prescription of isokinetic strength, muscular power and endurance developed by isokinetic training. Subjct was one Korea eleite athlete for male. Isokinetic strength was defined as the maximun peak torque achieved through a range of motion at 240°/sec and nuscular endurance was defind to be the work output perforned by 50 repetitions at 240°/sec on the lumex Cybex-Ⅱ. Subject performed in 50 sec. 8 repetitions at 60°/sec., 3 sets 10 repetitions at 240°/sec. in 3 day week for 8 weeks. The findings of the present case study were as follows. 1) The percent ratio(%) increments of isokinetic strength for right(R.) and left(L.) knee was 9% than pre-test. 2) The percent ratio(%) increments of isokinetic muscular power for knee flexor was 7% than pre-test. 3) The percent ratio(%) increments of isokinetic muscular endurance for L. knee extensor, L. knee flexor, R. knee extensor, and R. knee flexors were 11%, 18%, 16% and 22% than pre-test respectively. Within the scope of this study, the finding have suggested the following conclusions; First, to check injury factors should be useing scientific instrument Cybex-Ⅱ system. Second, to improve strength, power and muscular endurance should be useing isokinetic be Cybex-Ⅱ system.
크산틴 산화효소의 라디칼 생성에 대한 EDTA의 착물 효과
이덕재,구재관,노정희,이인,홍욱희 인제대학교 1995 仁濟醫學 Vol.16 No.1
크산틴 산화효소의 라디칼 생성에 있어서 EDTA의 착물효과를 알아보았다. 기체크로마토그래피를 이용해서 라디칼의 양을 측정하였는데, methional이 라디칼과 반응하여 생성된 에틸렌을 headspace가 장착된 기체크로마토그래피로 분석하여 라디칼의 농도를 측정하였다. 크산틴 산화효소를 EDTA와 반응시켰을 때 생성된 에틸렌은 산과 알칼리 용액에서 현저하게 증가하였는데, 산성 용액에서의 크산틴 산화효소는 H3Y-와 Y-4와 반응하였다. 즉 크산틴 산화효소가 EDTA와 착물을 형성할 때의 EDTA는 3과 6의 리간드에서 착물을 형성하는 것을 알 수 있었다. A series of experiment was conduced to evaluated the effect of EDTA on radical production by xantine oxidase. Radical production was indirectly measured with the amount of ethylene produced by the reaction of methinal with radicals, using gas chromatography equipped with headspace sampler. When xanthine oxidase was added to EDTA, ethylene production increased at alkali and acid solution. In the acid solution, xantine oxidase was reacted by HY- and Y4-. As above, Xanthine oxidase complex produced by the reaction of xanthine oxidase with 3 or 6 ligands.
고속 액체 크로마토그래피(HPLC)를 이용한 혈청 Selenium(IV)의 정량분석에 관한 연구
이덕재,차인준,노정희 인제대학교 1990 仁濟醫學 Vol.11 No.3
Selenium을 Se(IV)과 선택적으로 반응하는 d-penicillamine과 반응시켜 d-penicillamine selenotrisulfide(Pen-S-Se-S Pen)을 만든 다음 7-chloro-4nitrobenz-2-oxa-1, 3-diazole과 결합시켜 형광물질을 만들어 분석하였다. Se(IV) 유도체를 형광 검출기를 사용하여 역상크로마토그래피로 분리 정량하였으며, 10ppb의 감도하에 Se(IV)는 50-200ppb에서 직선성을 나타내었다(r=0.991). 따라서 이러한 분석 방법을 사용하여 환경 공해 연구 및 생체 내에서 필수적인 미량 금속으로 알려진 Se(IV)의 정량 등 임상연구에 기초 연구 자료로 제공할 수 있을 것으로 생각된다. Selenium (IV) reacts selectively with d-penicillamine (Pen) to produce stable d-penicillamine selenotrisulfide (Pen-S-Se-S-Pen) and subsequent derivatization to fluorophore by reaction with 7-Chlor-4-nitrobenz-2-oxa-1.3-diazale. The fluorophore was separated by reversed-phase HPLC and Selenium content was determined by fluormetric detection. The calibration plots showed a linear relationship (r=0991) in the range 50-200 ppb of Selenium(IV) with a detection limit of 10 ppb(Signal to noise ratio(S/N>2)). The method could determine total content of Selenium in biological and environmental samples after digestion of the samples and reduction of Selenium(VI) to Selenium(IV).