정상 성인에서 등척성 운동과 등장성 운동이 신체대사에 미치는 효과

안태순,정순열,정진상 건국대학교 1995 學術誌 Vol.39 No.2

This study was undertaken to investigate effects of isometric and isotonic exercise on the plasma levels of creatine phosphokinase (CPK), total cholestrol (TC), triglyceride (TG), high density lipoprotein (HDL), low density lipoprotein (LDL), glucose, and cortisol and heart rate (HR) in twenty healthy adults. Prior to the exercise the baseline level was taken from blood sampling after resting for thirty minutes. The subjects were divided Into two groups by ten ; one for isometric, the other for isotonic exercise. Physical exercise was performed by twenty minutes a day for 5 days. As compared with the baseline level, the plasma cortisol level increased significantly after isometric exercise and the plasma CPK level increased significantly after isotonic exercise (p<0.05). There is no significant change in the levels of plasma TC, TG, HDL, LDL, and glucose after exorcise in both groups. Heart rate increased more rapidly in isometric exercise than in isotonic exercise (p<0.05). Key words : isometric exercise, isotonic exercise

지역사회 서비스센터를 위한 컨덴츠개발

안종근,오동익,박두순,이상헌 호서대학교 반도체제조장비국산화연구센터 2000 학술대회 자료집 Vol.2000 No.1

정보통신부와 행정자치부에서 추진중인 지역정보화 사업에는 지방자치제 시대에 발맞추어 지역의 특성을 살린 정보제공을 목표로 한 지역 정보화 센터를 설립ㅎ여 지역 주민들에게 생활정보, 산업정보, 행정정보를 제공할 수 있도록 계획하고 있다. 현재 지방자치단체에서는 이러한 업무를 수행할 수 있는 정보와 관련 인력조차 확보하고 있지 못하고 있으며, 또한 업무 개발 경험도 많지 못하여 지방자치단체의 자체 개발은 어려운 실정이다. 따라서 본 연구에서는 각 지역에 소재한 중·소기업들에게 제공할 수 있는 산업정보와 일반 시민들이 필요로 하는 생활정보의 기본적인 내용과 틀을 마련하여 전국의 232개 시·군·구의 지역 정보화 센터에서 활용할 수 있는 컨텐츠를 개발한다.

고탄소 마르텐사이트-베이나이트 2상 혼합조직강의 베이나이트 변태특성 및 기계적 성질

안진환,김순호,성장현 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.-

This study carried out to investigate into the influence of silicon addition on charpy impact values, transformation kinetics and morphology of lower bainite in high carbon steel with a mixed structure of martensite and lower bainite. The width of lower bainite plate was decreased and the transformation kinetics appeared to be fast with the addition fo silicon. The transformation cirves of lower bainite showed to be a sigmoid shape representing the typical nucleation and growth mechanism. Charpy impact values showed linearly increasing tendency with increasing the volume fraction of bainite and tempering temperature for the mixed structure of martensite and bainite. The chaning range of impact value with the variation of the volume fraction of bainite or appeared to be remarkable, except at the 600℃ tempering, with the addition of silicon. The improvement effect of impact value on tempering was depressed with the addition of silicon. This phenomenon was considered to have an retardation effect on carbide precipitation by silicon.

톨루엔 디이소시아네이트 폭로 근로자들의 생물학적 모니터링

안연순,노재훈,김치년,박윤정,정상혁 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.2

Toluene diisocyanate(TDI) is widely used in the production of flexible polyurethane foams, as well as in the formulation of polyurethane paints and coatings. The commercial material is generally a mixture of 2,4- and 2, 6-TDI, the predominant mix being 80% 2,4 and 20% 2,6-TDI. The 2,4-isomer is considerably more reactive than the 2,6-TDI at ambient temperatures due to steric factors involving the positions of the isocyanate groups relative to the ring methyl group. Because of this difference in the reactivities of the isomers, it seemed probable that there might be an increase in the amount of 2,6-TDI offgased relative to the 2,4-isomer. Therefore a relative enrichment of the 2,6-TDI has been found in industrial atmospheres. Toluene diamines, which are metabolites of TDI, in urine have a linear relation with exposure to TDI, so that urianry TDA could be used as a biological index of the exposure to TDI. This study was conducted to investigate the distribution of TDI isomer in industrial atmospheres and to propose proper biological monitoring methods by identifying the relationships between the environmental TDI exposure and concentration of TDA in urine. Concentrations of 2, 4-TDI and 2, 6-TDI in air were 4.38㎍/㎥ and 25.43㎍/㎥, respectively. The Threshold Limited Value of 40㎍/㎥ was exceeded for the 2, 6-TDI in about 46.8%(22 samples) of the samples, while the 2, 4-TDI was not at all exceeded. The ratio between 2, 4-TDI and 2, 6-TDI varied in air samples in the range of 2.4%:97.6%-51.0%:49.0%. There was an enrichment of 2, 6-TDI in air relative to the 2, 4-TDI. Concentrations of 2, 4-TDA and 2, 6-TDA in urine were 1.31㎍/g creatinine and 4.16㎍/g creatinine, respectively. The ratio between 2, 4-TDA and 2, 6-TDA varied in urine samples in the range of 1.4%:98.6%-99.9%:0.1%. There was an enrichment of 2, 6-TDA in urine relative to the 2, 4-TDA. No relation between the concerations of TDA isomer in urine and concerations of TDI isomer in air was found. Above results of this study, workers were more exposed to the 2, 6-TDI relative to the 2, 4-TDI in industrial atmospheres. Therefore, the establishment of TLV for 2, 6-TDI should be considered. Also, the further studies on biological monitorigs of workers exposed to TDI should be continued.

Spreader의 종류와 Accessory cone의 적합성에 따른 근단폐쇄성에 관한 실험적 연구

안영미,최기운,민병순,최호영,박상진 慶熙大學校 齒科大學 1994 慶熙齒大論文集 Vol.16 No.1

accessory cone used in lateral condensation method. 120 plastic blocks with canal preformed were instrumented with K-H-files and Gates-Glidden bur. Shaped plastic blocks were divided into six experimental groups according to spreader and accessory cone used in lateral condensation. Then they were obturated by lateral condensation method without sealer. Six experimental groups were as follows: Group 1 Filling with #30 spreader & #25 gutta-percha cone Group 2 Filling with #30 spreader & Fine accessory cone Group 3 Filling with #3 spreader & #25 gutta-percha cone Group 4 Filling with #3 spreader & Fine accessory cone Group 5 Filling with #20,#30 spreader & #25 gutta-percha cone Group 6 Filling with #2, #3 spreader & Fine accessory cone All the blocks were stored in 100% humidor at room temperature for 2 days. Each block was placed in centrifuged for 20 minutes at 3,000 rpm Apical leakage was mesured from the apical foramen to the most coronal level of dye leakage in millimeter under a stereoscope. The data were analysed by ANOVA. The obtained results were as follows; 1: In groups using two spreaders(Group 5,6), the linear leakage was less than one spreader using groups(Group 1-4). 2. In groups using two spreaders(Group 5,6), there was no significant difference in linear leakage between standardized -spreader group and nonstandardized group (P>0.01). 3. When one spreader was used(Group 1-4), standardized-spreader groups showed less linear leakage than nonstandardized spreader groups(P<0.01). 4. In case of using same spreader(Groupl,2 & Group 3,4), there was no significant difference in linear leakage according to accessory cone type. 5. It needs to use one more spreaders to increase apical sealability.

지역사회의 정보포탈센터를 위한 컨텐츠개발

안종근,박두순,오동익,이상헌 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

지방자치제 시대에 발맞추어 정보통신부와 행정자치부에서 추진중인 지역정보화 사업에는 지역의 특성을 살린 정보제공을 목표로 한 지역 정보화 센터를 설립하여 지역 주민들에게 생활정보, 산업정보, 행정정보를 제공할 수 있도록 계획하고 있다.현재 지방자치단체에서는 이러한 업무를 수행할 수 있는 정보화 관련 인력이나 예산은 물론이고 장기적인 계획조차 수립하고 있지 못하고 있는 곳이 많으며, 또한 현재의 조직과 예산으로는 지방자치단체의 자체 개발은 어려운 실정이다. 따라서, 본 연구에서는 각 지역에 소재한 중 · 소기업들에게 제공할 수 있는 산업정보와 일반 시민들이 필요로 하는 생활정보의 기본적인 내용과 틀을 마련하여 전국의 232개 시 · 군 · 구의 지역 정보화 센터에서 활용할 수 있는 생활/문화, 무역/기업, 산업/경제, 열린 마당에 관한 컨텐츠를 개발하였다.

고관절 주위 대퇴 직건에 발생한 석회화 건염-1예보고-

성일보,황순호,안종국,정병현,염재광,황재광,정형진,김진호 대한고관절학회 2001 Hip and Pelvis Vol.13 No.1

Shock로 發生한 成人 Respiratory Distress Syndrome

安喜淳,張連珍,金仁世,趙裕永,金晟烈 순천향의과대학 1978 Journal of Soonchunhyang Medical Science Vol.1 No.1

The adult respiratory distress syndnome was originated from acute hemorhagic and septic shock in 3 patients after operation. All patients recovered with active management (PEEP,albumin,diuretics,and steroid) and various intensive therapies. Etio-logical, Pathophysiological and therapeutic points in A.R.D.S. were discussed with review of articles.

고체상 미량분석법(SPME)을 이용한 GC/FID에서 PCE 및 TCE 최적 분석법

안상우,이시진,장순웅 한국환경과학회 2004 한국환경과학회지 Vol.13 No.10

A new method based on solid phase microextraction(SPME), coupled with GC/FID, has been developed for the determination of PCE and TCE in water samples. The experimental parameters affecting the SPME process (i.e, kinds of fibers, extraction time, desorption time, extraction temperature, volume ratio of sample to headspace, salt addition, and magnetic stirring) were optimized. The coefficients of determination (R²) for PCE and TCE were 0.9951 and 0.9831, respectively when analytes concentration ranges from 10 to 300μg/L. The relative standard deviations were 3.4 and 2.1% for concentration of l0μg/L(n=5), respectively. The detection limits of PCE and TCE were 0.5 and 1.3μg/L, respectively.

洪水流出 Simulation모델의 媒介變數 變化特性에 따른 流出特性 硏究

李舜鐸,安勝燮 嶺南大學校工業技術硏究所 1992 연구보고 Vol.20 No.2

The application of the SSARR model to any particular watershed depends largely on the development of parameter relationships. Parameter relationships are usually established by reconstituting historical streamflow records often with sparse input data. In this study, it has been estimated model parameters which required to flood runoff analysis using the SSARR Model. As it has been examined runoff characteristic through the variety of runoff simulation model parameter, it will be determined optimal parameters required to the runoff analysis of riber basin. The major results of this reserch can be summarized as follows; 1) As the results of the watershed runoff parameters, SMI-ROP, RGS-RS and BII-BFP are sensitive to the runoff hydrograph shape and peak time. But KE-RI relationship curve is not affected to it. 2) As the results of the streamflow parameters, Phase No., KTS and n are sensitive to the peak time, different from watershed runoff parameters.