Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Nam Ik Chang"'
Autor:
Nam-Ik Chang, Kwang-Sik Yoon, Young-Joo Kim, Kyoungsook Lee, Jae-Woon Jung, Dongho Choi, Kap-Soon Kim, Yu-Jin Choi, Byung-Jin Lim
Publikováno v:
Journal of Environmental Science International. 21:1235-1244
The objective of this study is to evaluate Flow-Pollutant load delivery ratio equations developed from rural watershed on main subwatersheds within Juam Lake. Two regression equations for BOD and three equations for T-P were evaluated on Bosung cheon
Autor:
Ha-Na Park, Kwang-Sik Yoon, Byung-Jin Lim, Yu-Jin Choi, Sohyun Cho, Jae-Woon Jung, Kyoungsook Lee, Nam-Ik Chang, Dongho Choi
Publikováno v:
Journal of Environmental Science International. 21:31-39
The objective of this study is to provide pollutant loads delivery ratio for flow duration in Oenam-cheon watershed, which is upstream watershed of Juam Lake. To calculate the delivery ratio by flow duration, rating curves and discharge-loads curves
Autor:
Hwan-Hoo Seong, Jong-Soo Heo, Dong-Cheol Seo, Se-Won Kang, Hyun-Ook Kim, Kap-Soon Kim, Jun-Bae Lee, Nam-Ik Chang, Ju-Sik Cho, Byung-Jin Lim, Jong-Hwan Park
Publikováno v:
Korean Journal of Soil Science and Fertilizer. 44:400-407
To evaluate the aquatic ecological characteristics in Sinpyongcheon constructed wetlands for treating nonpoint source pollution, the removal rates of nutrients in water, the total amounts of T-N and T-P uptakes by water plants, and chemical character
Autor:
Nam-Ik Chang, Dong-Cheol Seo, Myung Ja Han, Jong-Soo Heo, Ju-Sik Cho, Se-Won Kang, Yong-Chol Lee, Jung-Heon Chae, Jong Hwan Park, Seok-Bae Bang, Kap-Soon Kim
Publikováno v:
Journal of Applied Biological Chemistry. 53:232-238
In order to investigate the treatment efficiency of pollutants in free water surface constructed wetlands (FWS CWs) with lotus (Nelumbo nucifera) cultivation pond, the experiment was consisted of two sites (site I and II) in Lake Juam, Korea. The sit
Publikováno v:
Desalination. 264:201-205
The diversity and abundance of the nitrite reductase gene nirS were investigated for a free surface flow constructed, in both the summer and winter seasons. Nitrate was efficiently removed especially by the Typha wetland, under anoxic conditions, in
Publikováno v:
Journal of The Korean Society of Agricultural Engineers. 52:19-26
To provide the basic information for the water quality management of the Sumjin River Basin, delivery ratios for flow duration were studied. Using the day-interval data set of discharge and water quality observed from the Chooryeong-cheon watershed,
Autor:
Seuk-Hun Joo, Doughee Rhew, Woo-Young Choi, Jae-Woon Jung, Nam-Ik Chang, Kwang-Sik Yoon, Yong-Woon Lee, Su-Woong Lee
Publikováno v:
Journal of The Korean Society of Agricultural Engineers. 51:25-31
In this study, pollutant loads delivery ratio by flow duration in Hwangryoung A watershed was estimated. The delivery ratio was estimated with measured data by Ministry of Environment(MOE) and the regression equation based on geomorphic parameters. E
Autor:
Sang Don Kim, Nam Ik Chang, Yong Hwa Cheong, Sung Un Kim, Kap Soon Kim, Ju-Sik Cho, Dong-Cheol Seo, Jun Bae Lee, Hyeon Tae Kim, Jong-Soo Heo, Jong Hwan Park
Publikováno v:
Journal of the Korean Society for Applied Biological Chemistry. 52:389-396
Germanium (Ge) is a rare heavy metal and is known to toxic to plants at high level. However, there is little evidence about the Ge effect on plant growth. Here, we investigated the effect of inorganic (GeO2) and organic (Ge-132) germanium on lettuce
Publikováno v:
Chemosphere. 76:395-401
The effects of particle size on the bioavailability of estrogenic chemicals in the sediments from the Yeongsan River and its tributaries in South Korea were evaluated for 2006 and 2007. Samples for chemical analysis and bioassays were collected from
Publikováno v:
Journal of The Korean Society of Agricultural Engineers. 49:89-97
Simple regression models for pollutants load estimation of paddy developed by the Ministry of Environment in 1995 were tested with the data (T-N, T-P, , and SS) collected from Yeongsan and Seomjin river watersheds, and improvement measures were sugge