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영동지역 주요 수종별 낙엽과 생엽의 착화특성에 관한 연구
박영주(Park, Young-Ju),이시영(Lee, Si-Young),신영주(Sin, Young-Ju),김수영(Kim, Su-Young),김영탁(Kim, Young-Tak),이해평(Lee, Hae-Pyeong) 한국화재소방학회 2008 한국화재소방학회 학술대회 논문집 Vol.2008 No.춘계
본 연구에서는 강원도 영동지역 주요 7가지 수종의 낙엽과 생엽을 대상으로 착화특성을 고찰하고자 강우 전과 후의 연료를 채취하여 연료의 함수율과 가연성과의 관계, KRS-RG-9000을 사용하여 착화특성을 고찰하였다. 시험결과 침엽수 낙엽은 강우 후 대기노출로부터 상온에서 144시간 경과 시 함수율이 10% 이하로 건조되어 가연성 물질이 발생할 수 있을 정도로 건조됨을 알 수 있었으며 활엽수는 자연발화온도가 높게 나타남에 따라 저온에서 착화지연시간이 길게 나타나 침엽수보다 내화력이 강함을 알 수 있었다. In this study, we have carried out the test to examine the ignition characteristics, such as a relation of moisture content and combustibility, and ignition temperature using KRS-RG-9000 tester, living leaves and dead leaves of significant 7 species of Young Dong Provinces of Korea after and before the rainfall. After 144 hours at normal temperature, the percentage of water content of the needle-shaped leaves was less than 10%. So it is suppose to be ignite easily. On the other hand, the self-temperature to ignite of broadleaf is higher. So the retard time at lower temperature is more long than needle-shaped leaf. Consequently, the fire-resistant qualities of broadleaf is higher than needle-shaped leaf.
박영주(Park, Young-Ju),이시영(Lee, Si-Young),신영주(Sin, Young-Ju),김수영(Kim, Su-Young),김영탁(Kim, Young-Tak),이해평(Lee, Hae-Pyeong) 한국화재소방학회 2008 한국화재소방학회 학술대회 논문집 Vol.2008 No.춘계
본 연구에서는 영동지역의 임상별 대표 수종인 소나무와 떡갈나무를 대상으로 주요 부위별 함수율 측정 및 건조속도와 가연성과의 관계, KRS-RG-9000의 발화온도 시험기를 사용하여 착화특성을 고찰하였다. 강우 후의 함수율은 대체로 생엽과 가지부위가 <TEX>$52{\sim}70%$</TEX> 정도로 높았으며 상온에서 144 시간 경과 시 <TEX>$17{\sim}33%$</TEX>정도로 건조되었으며 낙엽은 함수율이 10% 정도 건조되었다. 착화특성은 부위별로 많은 차이가 있었으며 착화 위험성 순서로는 낙엽>생엽>수피>가지 순서로 나타나 수피와 가지 부위가 발화온도가 높게 나타남에 따라 저온에서 착화가 지연되는 시간이 낙엽과 생엽보다 길게 나타남을 알 수 있었다. In this study, we have carried out test to examine the ignition characteristics, such as a relation of moisture content and combustibility, and ignition temperature using KRS-RG-9000 tester, of significant part of above trees which are representative species of Young Dong Province of Korea. After rainfall, the percentage of moisture content of living leaves and branches was between 52 and 70%. But it was just between 17 and 33% after 144 hours drying at normal temperature. For dead leaves, it was 10% lower than of first. There was a significant difference on ignition characteristics. The hazard of ignition is highest on dead leaves. The ignition temperature of barks and branches is higher so a retard time is long than of living and dead leaves at normal temperature.
박영주(Park, Young-Ju),이시영(Lee, Si-Young),신영주(Sin, Young-Ju),김수영(Kim, Su-Young),김영탁(Kim, Young-Tak),이해평(Lee, Hae-Pyeong) 한국화재소방학회 2008 한국화재소방학회 학술대회 논문집 Vol.2008 No.춘계
본 연구에서는 영동지역의 대표 수종인 소나무와 떡갈나무를 대상으로 주요 부위별 열적 특성을 고찰하고자 콘칼로리미터 시험(ISO 5660-1)을 수행하여 총연기발생량과 연기온도, 연소에 따른 산소소모량을 분석하였다. 소나무의 낙엽과 생엽은 연소초기에 급격하게 연기방출량이 증가하면서 가지와 수피에 비하여 총연기방출량이 약 8.3배 정도 높은 것으로 나타났으며 떡갈나무의 가지와 수피는 소나무보다 가지는 14.4배 정도, 수피는 7.2배 정도 높은 것으로 나타났다. 또한, 연기발생 최고온도는 <TEX>$338.35{\sim}353.25\;K$</TEX> 사이로 나타남을 알 수 있었으며 산소소모량은 낙엽, 가지, 수피는 큰 차이는 없는 것으로 나타났으나 함수율이 높은 생엽의 경우 산소소모량이 가장 작게 나타남을 알 수 있었다. In this study, we have carried out the cone calorimeter test to examine the thermal characteristics, such as total smoke production(TSP), smoke temperature and oxygen consumption, of significant parts of above trees which are representative species of Young Dong Province of Korea. The smoke production of dead leaves and living leaves of pinus densiflora was increased rapidly at the early period of combustion. So the total smoke production of this parts was 8.3 times higher than other parts. The TSP of branches and barks of quercus dentata was 14.4 and 7.2 times higher than of pinus densiflora respectively. And also the maximum smoke temperature was about <TEX>$338.35{\sim}353.25\;K$</TEX>. The significant difference of oxygen consumption was not detected for dead leaves, branches and barks. However, the oxygen consumption of living leaves which have high percentage of moisture content is the lowest.
식품 중의 엽산함량 측정을 위한 Trienzyme 처리 방법
연미영,현태선,박수봉,박인영,신영주 충북대학교 교육 ·생활연구소 생활과학연구센터 2002 생활과학연구논총 Vol.5 No.-
Food folate assay after trienzyme treatment (α-amylase, protease, folate conjugase) has been reported to be more effective than the assay after conjugase treatment alone. We evaluated the conditions of pH and incubation time for the treatment with trienzyme, and compared folate contents in selected Korean foods by applying two extraction methods (trienzyme treatment vs. conjugase treatment alone). Folate contents were measured by a microbiological method using L. casei after one of the extraction procedures. Optimal pHs for trienzyme treatment of black bean were found to be 5.0 and then 7.0, while those for korean cabbage was 7.0. Therefore, a pH of 7.0 was selected for the buffer during trienzyme treatment. Since samples treated with low concentrations of α-amylase and protease for 16 hours yielded lower values than those with high concentrations of enzymes for 4 hours, the incubation with high concentrations for short period was chosen. The recovery of folate after trienzyme treatment was 96.4%, and the coefficient of variation between days in the microbiological assay was 9.0%. Folate values after trienzyme treatment were higher in most foods except Korean cabbage, beef and milk than those after conjugase treatment alone. In addition, folate values obtained in this study were generally higher than the database published in 2000. Therefore it is necessary to determine folate in Korean foods using the trienzyme treatment we suggested here as well as conjugase treatment alone in order to estimate folate intake of Koreans more accurately.