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31.
Innovative water management is the first priority for the Saemangeum Project, a national project for a building global city as a frontrunner of green growth because there has been a big debate concerning the environmental problems (water quality, destruction of mud flats and so on). This study aims at identifying the change of water quality with time and analyzing the cause of its tendency. Results of this study verify that the importance of water quality is required when preparing water infrastructure for smart water use and may use for establishing a proper management plan in the Mangyeong River basins of the Saemangeum. 相似文献
32.
Kyung-Hwan Kwak Jong-Jin Baik Sang-Hyun Lee Young-Hee Ryu 《Boundary-Layer Meteorology》2011,141(1):77-92
Urban surface and radiation processes are incorporated into a computational fluid dynamics (CFD) model to investigate the
diurnal variation of flow in a street canyon with an aspect ratio of 1. The developed CFD model predicts surface and substrate
temperatures of the roof, walls, and road. One-day simulations are performed with various ambient wind speeds of 2, 3, 4,
5, and 6 ms−1, with the ambient wind perpendicular to the north–south oriented canyon. During the day, the largest maximum surface temperature
for all surfaces is found at the road surface for an ambient wind speed of 3 ms−1 (56.0°C). Two flow regimes are identified by the vortex configuration in the street canyon. Flow regime I is characterized
by a primary vortex. Flow regime II is characterized by two counter-rotating vortices, which appears in the presence of strong
downwind building-wall heating. Air temperature is relatively low near the downwind building wall in flow regime I and inside
the upper vortex in flow regime II. In flow regime II, the upper vortex expands with increasing ambient wind speed, thus enlarging
the extent of cool air within the canyon. The canyon wind speed in flow regime II is proportional to the ambient wind speed,
but that in flow regime I is not. For weak ambient winds, the dependency of surface sensible heat flux on the ambient wind
speed is found to play an essential role in determining the relationship between canyon wind speed and ambient wind speed. 相似文献
33.
Kwak Myeong-Taek Seo Gwang-Ho Cho Yang-Ki Kim Bong-Guk You Sung Hyup Seo Jang-Won 《Ocean Science Journal》2015,50(1):109-117
Ocean Science Journal - Satellite remotely sensed sea surface temperature (SST) was compared with in-situ SST in the seas around the Korean Peninsula from 1984 to 2013. A matchup dataset between... 相似文献
34.
Ocean Science Journal - The ecdysone receptor (EcR) induces hormonal pathways by binding ecdysteroids to other nuclear receptors for development, reproduction, and molting processes. To further... 相似文献
35.
Jan C.T. Kwak Richard W.P. Nelson Donald S. Gamble 《Geochimica et cosmochimica acta》1977,41(7):993-996
The ultrafiltration of solutions of well characterized samples of fulvic and humic acids or their salts, using two different techniques, show that these materials are retained by commercial ultrafiltration membranes with molecular weight cut-off values far higher than the reported molecular weights of fulvic or humic acid. The lower molecular weight fulvic acid or its Na+ -salt is retained even better than the higher molecular weight Na+-salt of humic acid. Both stirred cell and hollow fiber techniques can be employed to concentrate or desalt solutions of these humic materials, with relatively small solute losses. Very high simple electrolyte backgrounds (above 1 M) lower the performance of a given membrane considerably, moderate concentrations of simple electrolyte do not influence the ultrafiltration efficiency. 相似文献
36.