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Digital 분진계와 개인용 분진 포집기의 측정값의 관계
윤영노,이정주,정호근,최호춘,Yoon, Young-No,Lee, Jeong-Joo,Chung, Ho-Keun,Choi, Ho-Chun 대한예방의학회 1987 Journal of Preventive Medicine and Public Health Vol.20 No.2
The digital dust indicator (Sibata P-5), one of the direct·reading instruments was evaluated for the respirable dust in the underground coal mine environments. As a reference, respirable dust was determined using three cyclones and/or impactors. All the tests were performed on aerosol in twenty underground coal mines. The coefficients of mass-relative concentration were $0.067{\pm}0.054$ (Mean$\pm$Standard deviation) (range: 0.006-0.172). The relationship between relative concentration and temperature was not significant statistically. Also, the relationship of relative concentration and relative humidity was not significant. Mass concentration and relative concentration were $5.31{\pm}5.22mg/m^3$ and $162{\pm}163$ CPM ($Mean{\pm}Standard$ deviation) respectively. The range of mass concentration was $1.22-22.69mg/m^3$; relative concentration 16-628 CPM. The relationship of mass concentration and relative concentration was not significant in these ranges.
윤영노,김정수,한정석,윤세의,Yoon. Young-Noh,Kim. Jung-Soo,Han. Chyung-Such,Yoon. Sei-Eui 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1
Urban sewer systems are designed to operate in open-channel flow regime and energy loss at circular manholes are usually not significant. However, the energy loss at manholes, often exceeding the friction loss of pipes under surcharge flow, is considered as one of the major causes of inundation in urban area. Therefore, it is necessary to analyze the head loss associated with manholes, especially in surcharge flow. Hydraulic experimental apparatus with two circular manholes was installed for this study. The range of the experimental discharges were from <TEX>$1.0\ell/sec$</TEX> to <TEX>$4.4\ell/sec$</TEX>. Head loss coefficient was maximum because of strong oscillation of water surface when the range of manhole depth ratios<TEX>$(h_m/D_{in})$</TEX> were from 1,2 to 1.25. The average head loss coefficients for upstream manhole and downstream manhole were 0.58 and 0.23 respectively. Head loss at upstream manhole is nearly 2.5 times more than one at downstream manhole.
윤영노(Young No Yoon),김영식(Young Sik Kim),이영신(Young Shin Lee) 한국환경보건학회 1991 한국환경보건학회지 Vol.17 No.1
Airborne suspended particulate concentration in dri1ling sites of underground coal mines in Taebaek area was evaluated. And respirable coal dust exposure level was evaluated. Airborne sus pended particulate mass inc1ude total suspended partic1e (TSP) and thoracic partic1e (TPM). TSP(by open-face filter holder) and TPM(by elutriator) concentration were determined by low volume air samplers. Personal air samplers were attached to the coal workers inc1uding drillers, coal cutters, and their assistants. Normality and log-normality of TSP, TPM, and respirable dust(RPM) concentration were tested by Kolmogorov-Smirnov one-sample test. Differences of means of TSP, TPM, and RPM concentration were tested by paired t-test. Relation between TSP, TPM, and RPM with pairs were tested by regression test and Pearson’s correlation,
김정수,윤영노,김낙석,윤세의,Kim. Jung-Soo,Yoon. Young-Noh,Kim. Nak-Seok,Yoon. Sei-Eui 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1
Storm and flood damage management systems in national disaster management system(NDMS) were organized into three operation systems. They are prevention, preparation, response, and recovery systems. Disaster resources in each system must be promptly and exactly applied to minimize casualties and loss of properties. However, the disaster resources in current management system can not be immediately used in calamity situation due to the lack of efficiency in statistical data. Therefore, it is necessary to classify the emergency restoration equipment for efficient management and mobilization of disaster resources in disaster situation. In this study, field survey was executed to appropriately classify the emergency restoration equipment. Problems and reformation points of the disaster resources system were also presented to improve the classification technique and to construct the data base.
장석진,윤영노,김정수,윤세의,Jang,Suk-Jin,Yoon,Young-Noh,Kim,Jung-Soo,Yoon,Sei-Eui 한국방재학회 2007 한국방재학회 학술발표대회논문집 Vol.2007 No.1
In storm sewer networks a lot of manholes are installed to maintain and connect a sewer of urban area. There are some shapes of manhole such as circular type, square type, and so on. Square shape manholes are installed to connect the large diameter drainage pipes in general and have lager head losses than circular one. Consequently, it is important to analyze the head losses in square manhole because the head losses in square manhole are much bigger than the friction losses in pipes. Hydraulic experimental apparatus which can be changed the inside shape in square manhole was installed for this study. The experimental discharge was <TEX>$16{\ell}/sec$</TEX>. The head loss coefficients in the manhole were calculated by the experimental results. The range of head loss coefficients in the general square manhole were from 0.33 to 0.48 and the range of head loss coefficients in the square manhole changed inside shape were from 0.23 to 0.28.
태백 및 강릉지역 석탄광의 호흡성 분진과 석영농도에 관한 조사
최호춘,천용희,윤영노,김해정,Choi, Ho-Chun,Cheon, Yong-Hee,Yoon, Young-No,Kim, Hae-Jeong 대한예방의학회 1987 Journal of Preventive Medicine and Public Health Vol.20 No.2
In order to investigate working conditions of underground coal mines, this work was undertaken to evaluate the respirable dust and the concentration of quartz in Taeback and Kangneung areas. The concentration of quartz was determined by Fourier Transform Infrared Spectrophotometry. The results were as follows; 1) The concentration of respirable dust of drilling and coal face in Taeback and Kangneung areas were as followed; Arithmetic $Mean{\pm}S.D.(mg/m^3)$ Taeback Drilling: $2.00{\pm}1.56$ Taeback Coal Face: $3.74{\pm}3.14$ Kangneung Drilling: $4.55{\pm}4.51$ Kangneung Coal Face: $5.77{\pm}4.53$ Geometric $Mean{\pm}S.D.(mg/m^3)$ Taeback Drilling: $1.34{\pm}2.81$ Taeback Coal Face : $2.55{\pm}2.61$ Kangneung Drilling : $2.44{\pm}3.63$ Kangneung Coal Face: $4.24{\pm}2.37$ 2) Distribution of respirable dust was well fitted to the log-normal distribution and geometric mean value was $log^{-1}\;0.37{\pm}log^{-1}\;0.47(2.34{\pm}2.95)mg/m^3$. 3) The difference of respirable dust concentrations in Taeback and Kangneung areas was not significant statistically (p>0.05). 4) The concentration of quartz of drilling and coal face in Taeback and Kangneung areas were as followed; Arithmetic $Mean{\pm}S.D.(%)$ Taeback Drilling: $6.18{\pm}5.52$ Taeback Coal Face: $1.89{\pm}1.54$ Kangneung Drilling: $3.54{\pm}2.12$ Kangneung Coal Face: $2.05{\pm}3.37$ Geometric $Mean{\pm}S.D.(%)$ Taeback Drilling: $4.24{\pm}2.59$ Coal Face: $1.39{\pm}2.22$ Kangneung Drilling : $2.55{\pm}3.08$ Kangneung Coal Face : $1.24{\pm}2.33$ 5) Distribution of quartz concentrations was well fitted to the log-normal distribution and geometric mean value was $log^{-1}\;0.33{\pm}log^{-1}\;0.45(2.14{\pm}2.82)%$. 6) The difference of quartz concentrations in Taeback and Kangneung areas was not significant (p>0.05), but significant at drilling sites and coal faces (p<0.05).