間歇的 運動에 의한 脫水 및 水分攝取의 生理的 效果

朴哲浩,朴吉俊,李相于,金永明,朴贊熙,玄松子,呂南會,朴相甲,金榮俊 東亞大學校附設스포츠科學硏究所 1989 스포츠科學硏究論文集 Vol.7 No.-

This study aims at revealing the physiological responses of dehydration (DH) and rehydration (RH) in intermittent exercises at the work intensity of 70% HR max. First, with general student public, three times of exercise (each for 20 minutes) at the given work intensity were taken, with a break for 25 minutes respectively. Their heart rate, rectal temperature and plasma electrolyte concentration both DH and RH were measured. Second, in two groups of athletes and non-athletes, 9 rounds of exercise (for 100 minutes) and 8 breaks (for 60 minutes) were taken, with RH forced 10 times to compensate for the subjects' water loss. Their change in sweat loss and plasma electrolyte concentration as well as the IVDP(Intensive Voluntary dehydration Phenomenon) were experimented. The summary of this research follows. 1) Mean heart rate and rectal temperature in intermittent exercises were higher at DH than at RH, growing up at the increasing level of DH. 2) RH saw no change in the plasma concentration of Na+, K+ and Cl-, while DH observed a significant increase. 3) HCO₃made a significant decrease at DH before growing up. 4) Mg++ had no change, while Ca++ increased significantly at RH and DH. 5) Lactate showed an increase with significance at RH and DH, especially greater at DH. 6) Osmotic pressure increased meaningfully at DH. 7) Anion gap increased significantly at DH and RH. 8) On the other hand, when the forced RH was held, the group of athletes had greater sweat loss per body surface area than that of non-athletes. 9) The athletes' plasma concentration of Na+ and Cl- revealed a clear decrease. 10) There was seen no significant change in the plasma concentration of K+, Mg++ and Ca++ in both groups. 11) The IVDP occurred at the RH of 2.3ℓfor athletes and more than 2.5ℓfor no-athletes.

화상 환자에서 파상풍 예방치료에 대한 조사

탁석현,유기철,이삼우,강민수,오승헌,안무업,안희철,조준휘,박우정 대한화상학회 2003 대한화상학회지 Vol.6 No.2

단무지 공장에서 발생한 질식 사고의 원인과 방사선학적 소견: 중례보고 및 가스분석 결과

박충기,김만구,김흥철,안범규,박만수,황우철,최철순,강익원 江原大學校 附設 環境硏究所 1994 環境硏究 Vol.11 No.-

목 적:단무지 공장에서 질식사고를 일으켰던 가스의 종류를 알아내고, 이러한 가스중독의 방서선학적 소견을 소개하기 위하여 본 연구를 하였다. 대상 및 방법:단무지 공장에서 발생한 질식 사고자 3예중 생존자 1예를 대상으로 단순흥부X-선검사와 CT 소견을 분석하였으며, 가스의 종류를 알아내기 위하여 단무지를 유리병에 넣어 발생된 가스를 가스크로마토그래픽을 이용하여 분석하였다. 결 과:단무지 공장에서 발생한 질식사고자중 생존한 1명의 방사선학적 검사에서 신속히 호전되는 폐경결(consolidation)을 볼 수 있었으며 이는 폐부종의 소견임을 알 수 있었다. 협기성 상태에서 단무지를 담은 유리병의 상층부 가스를 실험 분석한 결과 이산화탄소, 에칠알코올이 다량으로 검출되었으나 독성가스는 주로 황화수소이였다. 결 론:단무지 공장의 질식 사고자에서 폐방사선학적 소견은 폐경결을 보이는 폐부증으로서 이는 실험을 통해 단무지에서 발생되는 유독가스인 황화수소 때문임을 입증하였다. Purpose: To identify the main toxic gas released from salted radish in rice bran(Dan-M-Ji) and to introduce the radiological findings of the patient who was exposed to the gas. Materials and Methods: Chest radiographs and CT scans of one survivor among three men who were exposed to the gas from Dan-Mu-Ji were reviewed. Gas obtained from the closed bottle containing Dan-Mu-Ji was analized by using the gas chromatography. Results: The radiographlc examinations of the survivor were suggestive of pulmonary edema with it's rapidly improving consolidations in both lung. The headapace gas within the bottle containing Dan-Mu-Ji was mainly composed with carbon dioxide, ethyl alcohol and hydrogen sulfide, of which hydrogen sulfide was considered the main toxic gas released. Conclusion: Under the anaerobic condition, Dan-Mu-Ji released toxic hydrogen sulfide. Inhalation of hydrogen sulfide might produce non-cardiogenic pulmonary edema.

포도당과 이소프로테레놀에 의한 시상하부의 소마토스타틴 분비가 갑상선자극호르몬방출호르몬에 의한 갑상선자극호르몬에 미치는 효과

박철영,양인명,오승준,김덕윤,우정택,김성운,김진우,김영설,최영길 대한내분비학회 2000 Endocrinology and metabolism Vol.15 No.4·5

매립지 조기안정화에 따른 침출수 및 매립가스 분포 특성 연구

박진식,안철우,박출재,김수생 동아대학교 환경문제연구소 1999 硏究報告 Vol.22 No.1

This study was conducted to establish primary data for the stabilization assessment of expired landfill site with analysis of leachate and landfill gas Based on the results of the experiments, BOD and COD concentration of leachate became low after earlier stabilization facilities and COD/COD ratio of leachate was investigated average 0.18 in 1998. Variation of CH₄concentration of landfill gas in spring and summer were higher than autumn and winter and CH₄concentration was investigated average 14.2% in Dec. 1998.

광파이버 변위센서 성능에 관한 연구

박찬규,신우철,홍준희,김기수 충남대학교 공업교육연구소 2003 論文集 Vol.26 No.1

The purpose of this paper is to develop an optical fiber displacement sensor. An optical fiber displacement sensor is based on simple principles. Electrical signal responds to the optical flux change due to the displacement change between a target and a sensor probe. In this paper, the performance of optical fiber displacement sensor has been investigated. Firstly, optical loss has been measured before and after polishing optical fiber endface. Secondly, allowance of optical fiber bending has been tested. Thirdly sensitivity and linear range of the sensor has been found out according to the shape of cross section of optical fiber.

측두하악관절 내장증에서의 관절원판의 형태 및 골 변화에 관한 연구

박철우,황의환,이상래 대한구강악안면방사선학회 2001 Imaging Science in Dentistry Vol.31 No.1

Purpose : To investigate bone and disc configuration on MR images in internal derangement related to age. Materials and methods : MR images of 150 TMJs in 107 patients were analyzed to determine the morphologic changes. Two groups were distinguished to be correlated with age. Group 1 consisted of TMJs that were diagnosed as having anterior disc displacement with reduction (ADDwR), and Group 2 consisted of TMJs that were diagnosed as having anterior disc displacement without reduction (ADDwoR). We assessed the configuration of the articular disc, degree of anterior disc displacement, and osseous changes of TMJs. Results : The third decade (83 of 150 joints) was most frequent in this study. In the ADDwR group biconcave discs was most frequent at all ages except fifth decade, but in the ADDwoR group deformed discs was most frequent at third and forth decades. In the ADDwR group slightly displaced discs was most frequent at all ages, but in the ADDwoR group severely displaced discs was most frequent at second decade, and the degree of disc displacement was increased with aging over 30 years of age. TM joints showed osseous changes in 17% of the ADDwR group, and in 30% of the ADDwoR group. MR findings of osseous changes of the TMJ were not found to be significantly correlated with age. Conclusion : The prevalence of deformation of disc, displacement of disc, and osseous changes of TMJ was higher in the ADDwoR group than in the ADDwR group. MR findings of disc configuration and degree of disc displacement were found to be correlated with age.(Korean J Oral Maxillofac Radiol 2001;31:9-16)

휘발성유기화합물(VOCs)의 변이원성 검정

박종천,이용탁,송현철,이우범 國立麗水大學校 環境問題硏究所 2004 環境硏究論文集 Vol.6 No.-

The mutagenicity of six kinds of VOCs(benzene, m.p-xylene, chloroform, toluene, methylethylketone, 1,2-dichloroethane) detected in high concentration and frequency in Kwangyang Bay was investigated. VOCs are water-insoluble and volatile. Therefore, when they are tested by the classical Ames test in the assay of mutagenicity, there may be experimental errors. To overcome this limitation, modified Ames test was used to assay mutagenicity of VOCs. By this modified Ames test, we could obtain much more satisfactory results. Even at extremely low concentration(0.0001㎍/㎖). bezene, m,p-xylene, and methylethylketone showed a weak mutagenicity. When S-9 mixture is added in the assay system, all tested VOCs except methylethylketone showed mutagenicity. When Salmonclla typhimurium TA 98 and Salmonella typhimurium TA 100 are exposed to VOCs of high concentration(100㎍/㎖). the number of colony decreased irrespective of the S-9 mixture treatment. It seem to be that the decrement results from the toxic effect of high concentration of VOCs.

태권도선수의 호흡순환능력에 관한 연구

박철호,김영준,김우규,박태열,홍명엽 東亞大學校附設스포츠科學硏究所 1999 스포츠科學硏究論文集 Vol.17 No.-

The purpose of this study was to evaluate the anaerobic thresold and EPOC(Excess post-exercise Oxygen Consumption) in treadmill exercise of taekwondo players(n=7),and group of controls college students(n=7). The started treadmill exercise with speed of 120m/min and within treadmill 5% slope. Especially the treadmill speed was increased with 20m/min per two minutes and subjects were finally led to exhaustion. The results obtained from this test were as follows: 1. The VO₂max( /min), VO₂ max(kg) showed significantly higher differences taekwondo group than control group in maximum exercise. 2. The ventilation volume showed significant difference taekwondo group than control group in maximum exercise. 3. The anaerobic threshold showed significant difference taekwondo group than control group in maximum exercise. 4. The EPOC showed significant difference taekwondo group than control group in maximum exercise.

고속주축 모니터링용 광파이버 변위센서의 파이버 특성에 따른 센서 성능 연구

박찬규,신우철,배완성,홍준희,이동주 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

To make high speed spindle system work properly, sensors with outstanding resolution and dynamic characteristics are essential. An optical fiber displacement sensor is based on simple principles. Electrical signal responds to the optical flux change due to the displacement change between a target and a sensor probe. In this paper, the performance of optical fiber displacement sensor has been investigated according to properties of optical fiber. Firstly, optical loss has been measured before and after polishing optical fiber endface. Secondly, allowance of optical fiber bending has been tested. thirdly sensitivity and linear range of the sensor has been found out according to the shape of cross section of optical fiber.