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장광미,강창희,서명석,허철구,박경윤,이호근,김영준 濟州大學校 基礎科學硏究所 1996 基礎科學硏究 Vol.9 No.2
A study has been performed on the characteristics of rural and urban surface ozone concentration for the period of March 1992 to February 1993. The monitoring station of rural ozone is located at Kosan, Cheju and other urban monitoring stations are located at Seoul, Pusan and Kwangju. Rural's and urban's ozone data exhibit a distinct features in many ways. First, annual mean of rural ozone concentration is very high(42 ppbv) but urban's are very low(10~15 ppbv). Second, rural ozone data shows a seasonal variation with it's maximum in spring, and minimum in summer, but urban's show a seasonal variation with it's maximum in spring, and minimum in winter. Third, diurnal variation of rural data is very small but that of urban's are very large. Fourth, monthly mean of daily minimum of rural data is not low and shows a large seasonal variation, but those of urban's data are extremely low(<3 ppbv) and have no seasonal variations.
Properties of disease occurrence by season for cultivation facilities of oyster mushroom
Myoung-Jun Jang,YounJin Park,Jeong-Han Kim 한국버섯학회 2019 한국버섯학회지 Vol.17 No.3
We investigated the correlation between density of air and the infection rate of airborne microorganisms in mushroom cultivation facilities and found that the correlation was low in places where the infection rate during cultivation was less than 1%. The farms with an infection rate of 2~5% showed a high infection rate in the inoculation room in spring and summer seasons, and in the incubation room in autumn, and the farms with an infection rate of more than 6% showed infection in all the rooms regardless of the season. The farms where the Trichoderma sp. was investigated at the time of the mushroom cultivation showed the highest infection rates of 3.17%, 2.74%, and 2.64% in summer, spring, and autumn, respectively. The farms infected with Neurospora tetrasperma showed a lesser rate of infection than the ones infected with Trichoderma sp., and the highest infection rate of 0.56% was observed in summer. Based on these results, the type of infection could be classified into five groups, where type I was farms where the infection rate is less than 1% in all seasons. Three farms belonged to this type, and the infection rate in this type was lower than that in the other types.
Comparison in characteristics of Pleurotus ostreatus fruit body according to ventilation conditions
Jang Myoung-Jun,Jang Hyoung-Guen,Ha Tae-Moon,Ju Young-Cheol 한국버섯학회 2007 한국버섯학회지 Vol.5 No.3·4
This study was carried out to set up ventilation coefficient for high quality fruit body. We made the ventilation apparatus for ventilation characteristics of oyster mushroom. The pattern of growth of oyster mushroom for 4 stage, 1stage of the period of primordial induction and 3 stage of the period of fruit body formation, was investigated. That was favorable configuration of the fruit body at the carbon dioxide concentration under 1,500ppm. The higher was ventilation coefficient, the more carbon dioxide injury generated, and the ventilation coefficient of the late growth was low. In the case of Chunchu 2-ho, those quality were high when ventilation coefficient as the lapse of growth stage set up 8, 6, 4, 4, and Suhan 2-ho was 6, 6, 4, 2. Base on these results, if the optimum ventilation coefficient set up, the cultivator will cultivate good production.
Properties of disease occurrence by season for cultivation facilities of oyster mushroom
Jang, Myoung-Jun,Park, YounJin,Kim, Jeong-Han The Korean Society of Mushroom Science 2019 한국버섯학회지 Vol.17 No.3
We investigated the correlation between density of air and the infection rate of airborne microorganisms in mushroom cultivation facilities and found that the correlation was low in places where the infection rate during cultivation was less than 1%. The farms with an infection rate of 2~5% showed a high infection rate in the inoculation room in spring and summer seasons, and in the incubation room in autumn, and the farms with an infection rate of more than 6% showed infection in all the rooms regardless of the season. The farms where the Trichoderma sp. was investigated at the time of the mushroom cultivation showed the highest infection rates of 3.17%, 2.74%, and 2.64% in summer, spring, and autumn, respectively. The farms infected with Neurospora tetrasperma showed a lesser rate of infection than the ones infected with Trichoderma sp., and the highest infection rate of 0.56% was observed in summer. Based on these results, the type of infection could be classified into five groups, where type I was farms where the infection rate is less than 1% in all seasons. Three farms belonged to this type, and the infection rate in this type was lower than that in the other types.
( Myoung Jun Jang ),( Yun Hae Lee ),( Young Cheol Ju ),( Seong Min Kim ),( Han Mo Koo ) 한국균학회 2013 Mycobiology Vol.41 No.1
This study was conducted to identify a suitable color of light for development of the fruit body in Hypsizygus marmoreus. To accomplish this, samples were irradiated with blue (475 nm), green (525 nm), yellow (590 nm), or red (660 nm) light emitting diodes (LEDs) to induce the formation of fruiting bodies after mycelia growth. The diameter and thickness of the`pileus and length of stipes in samples subjected to blue LED treatment were similar to those of subjected to fluorescent light (control), and the lengths of the stipes were highest in response to treatment with the red LED and darkness. The commercial yields of plants subjected to blue and green LED treatment were similar to those of the control. In conclusion, cultivation of H. marmoreus coupled with exposure to blue LED is useful for inducing high quality fruit bodies as well as higher levels of ergosterol, DPPH radical scavenging activity, total polyphenol content and reducing power.
Myoung-Sik Han,Im-Ho Han,이다혜,Jun Min An,Su-Nam Kim,Myoung-Sook Shin,Noriko Yamabe,Gwi Seo Hwang,Hye Hyun Yoo,Suk-Jung Choi,Ki Sung Kang,Hyuk-Jai Jang 고려인삼학회 2016 Journal of Ginseng Research Vol.40 No.2
Background: Nephrotoxicity is a common side effect of medications. Panax ginseng is one of the bestknown herbal medicines, and its individual constituents enhance renal function. Identification of its efficacy and mechanisms of action against drug-induced nephrotoxicity, as well as the specific constituents mediating this effect, have recently emerged as an interesting research area focusing on the kidney protective efficacy of P. ginseng. Methods: The present study investigated the kidney protective effect of fermented black ginseng (FBG) and its active component ginsenoside 20(S)-Rg3 against cisplatin (chemotherapy drug)-induced damage in pig kidney (LLC-PK1) cells. It focused on assessing the role of mitogen-activated protein kinases as important mechanistic elements in kidney protection. Results: The reduced cell viability induced by cisplatin was significantly recovered with FBG extract and ginsenoside 20(S)-Rg3 dose-dependently. The cisplatin-induced elevated protein levels of phosphorylated c-Jun N-terminal kinase (JNK), p53, and cleaved caspase-3 were decreased after cotreatment with FBG extract or ginsenoside 20(S)-Rg3. The elevated percentage of apoptotic LLC-PK1 cells induced by cisplatin treatment was significantly abrogated by cotreatment with FBG and the ginsenoside 20(S)-Rg3. Conclusion: FBG and its major ginsenoside 20(S)-Rg3, ameliorated cisplatin-induced nephrotoxicity in LLC-PK1 cells by blocking the JNKep53ecaspase-3 signaling cascade.