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경사지에서 고추 정식시기에 따른 토양유실과 유출수에 대한 식생피복 효과
조희래(Cho H.R.),하상건(S.K. Ha),현승훈(S.H. Hyun),허승오(S.O. Hur),한경화(K.H. Han),홍석영(S.Y. Hong),전상호(S.H. Jeon),김은진(E.J. Kim),이동성(D.S. Lee) 한국토양비료학회 2010 한국토양비료학회지 Vol.43 No.3
As sloped farmland is subject to runoff and soil erosion and consequently require appropriate vegetative coverage to conserve soil and water, a field study was carried out to evaluate the impact of crop canopy coverage on soil loss and runoff from the experimental plot with three different textural types (clay loam, loam, and sandy loam). The runoff and soil loss were examined at lysimeters with 15% slope, 5 m in length, and 2 m in width for five months from May to September 2009 in Suwon (37° 16" 42.67" N, 126° 59" 0.11" E). Red pepper (Capsicum annum L. cv. Daechon) seedlings were transplanted on three different dates, May 4 (RP1), 15 (RP2), and 25 (RP3) to check vegetation coverage. During the experimental period, the vegetation coverage and plant height were measured at 7 day-intervals and then the "canopy cover subfactor" (an inverse of vegetation cover) was subsequently calculated. After each rainfall ceased, the amounts of soil loss and runoff were measured from each plot. Under rainfall events >100 mm, both soil loss and runoff ratio increased with increasing canopy cover subfactor (R²=0.35, p<0.01, R²=0.09, p<0.1), indicating that as vegetation cover increases, the amount of soil loss and runoff reduces. However, the soil loss and runoff were depending on the soil texture and rainfall intensity (i. e., EI30). The red pepper canopy cover subfactor was more highly correlated with soil loss in clay loam (R²=0.83, p<0.001) than in sandy loam (R²=0.48, p<0.05) and loam (R²=0.43, p<0.1) plots. However, the runoff ratio was effectively mitigated by the canopy coverage under the rainfall only with EI30<1000 MJ mm ha<SUP>-1</SUP> hr<SUP>-1</SUP> (R²=0.34, p<0.05). Therefore, this result suggested that soil loss from the red pepper field could be reduced by adjusting seedling transplanting dates, but it was also affected by the various soil textures and EI30.
Glycyrrhizin이 Liver Glycogen Storage에 미치는 영향(影響)
한평희(Han, P.H.),이동열(Lee, D.Y.),홍석영(Hong, S.Y.),정규화(Chung, K.H.),이수월(Lee, S.W.) 대한약리학회 1967 대한약리학잡지 Vol.3 No.1
Many investigators reported the mineral corticoid hormon-like action of Glycyrrhizin. The other investigators suggested concerning the glucocorticoid hormon-like action. Authors had been observed the glycogen content of the liver to make sure the relationship between glucocorticoid like action of Glycyrrhizin and glucose metabolism in the liver. There was significant increase in the liver glycogen content in rat fed Glycyrrhizin for two weeks, however it was confirmed that Glucuronic acid combined with Glucuronic was unable to make any influence to glycogen content. The relation concerning the effect of Glycyrrhizin on liver glycogen and its mechanism of action might be needed followup study.
식물배양세포의 저장관계 유전자탐색과 형질전환에의 활용 1. 벼 배양세포의 건조보존기구와 관련유전자 선발
김길웅,대야청춘,신동현,Virigool, S.,Shinzaki, K. Y.,홍석영 경북대학교 유전공학연구소 1995 遺傳工學硏究所報 Vol.10 No.1
A system for long-term dry preservation of rice (Oryza sativa L.) callus and a protection mechanism regulating the survival of dried callus were investigated. The highest survival of dried callus and the highest regeneration of plantlets were observed in calli which had been pretreated with 10^(-5) M abscisic acid (ABA) in the presence of 90 g/L of sucrose. A corresponding accumulation of the RNA of the rab 16A gene (a rice gene induced by ABA and water stress) was detected in dried callus, mature seeds, and callus pretreated with 10^(-5) M ABA. Analysis of protein by two dimensional polyacrylamide gel electrophoresis(2D-PAGE) demonstrated different protein patterns in dried callus pretreated with 10-s M ABA and 90 g/L of sucrose compared to callus dried without the pretreatment. Three different cDNA clones, pDHS1, pDHS2, and pDHS3 contained cDNA inserts in size of 3.8, 3.2, and 3.2 kilobase pairs, respectively, were isolated by using Nhe I fragment from rab 16A as a probe. All the three clones exhibited unique restriction maps.
윤진일,남재철,홍석영,김준,김광수,정유란,채남이,최태진 한국농림기상학회 2004 한국농림기상학회지 Vol.6 No.3
Evapotranspiration (ET) is a critical component of the hydrologic cycle which influences economic activities as well as the natural ecosystem. While there have been numerous studies on ET estimation for homogeneous areas using point measurements of meteorological variables, monitoring of spatial ET has not been possible at landscape - or watershed - scales. We propose a site-specific application of the land surface model, which is enabled by spatially interpolated input data at the desired resolution. Gyunggi Province of South Korea was divided into a regular grid of 10 million cells with 30m spacing and hourly temperature, humidity, wind, precipitation and solar irradiance were estimated for each grid cell by spatial interpolation of synoptic weather data. Topoclimatology models were used to accommodate effects of topography in a spatial interpolation procedure, including cold air drainage on nocturnal temperature and solar irradiance on daytime temperature. Satellite remote sensing data were used to classify the vegetation type of each grid cell, and corresponding spatial attributes including soil texture, canopy structure, and phenological features were identified. All data were fed into a standalone version of SiB2(Simple Biosphere Modell) to simulate latent heat flux at each grid cell. A computer program was written for data management in the cell - based SiB2 operation such as extracting input data for SiB2 from grid matrices and recombining the output data back to the grid format. ET estimates at selected grid cells were validated against the actual measurement of latent heat fluxes by eddy covariance measurement. We applied this system to obtain the spatial ET of the study area on a continuous basis for the 2001-2003 period. The results showed a strong feasibility of using spatial - data driven land surface models for operational monitoring of regional ET.