Tidal cycle measurements of tidal currents, salinity and water tempe rature, and suspended sediment concentrations were measured at four stations, to gether with surveys along two profiles short core collection within...Tidal cycle measurements of tidal currents, salinity and water tempe rature, and suspended sediment concentrations were measured at four stations, to gether with surveys along two profiles short core collection within the Yalu Riv er estuary. Grain size analysis of the three core sediment showed that: 1) the s ediment from B1 to B3 became finer, worse sorting and positively skewed; 2) the diversification of matter origin became more and more evident from east to west; 3) the sediments over the region were of the same origin, as indicated by their similar colors and grain sizes. The data indicated that stratification occurred in the flood season, from upstream to downstream, and a salt wedge was formed. The water column was well mixed, but the longitudinal gradient of the salinity w as larger on spring tide. The results also showed that the dominating mechanism of suspended sediment transport in the Yalu River estuary was T1, T2, T3 and T5. The non-tidal steady advection transport was restricted by the net transport o f suspended sediment induced by mass Stoked drift directed to landwards, then th e net sediment transport rate were decreased and the turbidity maxima was also f avored to forming and extending.展开更多
The reform of quality education requires not only the reform of cultural curriculum, but also the reform of physical education curriculum. As one of the important contents of physical education teaching, basketball in...The reform of quality education requires not only the reform of cultural curriculum, but also the reform of physical education curriculum. As one of the important contents of physical education teaching, basketball in colleges and universities has a direct impact on the quality of physical education teaching, which not only explains the importance of basketball in physical education teaching in colleges and universities. It also shows the popularity of basketball among college students. However, from the current situation of basketball teaching in colleges and universities, there are still some problems, which not only affect the quality of teaching, but also affect the sustainable development of basketball. This paper discusses the influencing factors and development trend of college basketball teaching reform.展开更多
文摘Tidal cycle measurements of tidal currents, salinity and water tempe rature, and suspended sediment concentrations were measured at four stations, to gether with surveys along two profiles short core collection within the Yalu Riv er estuary. Grain size analysis of the three core sediment showed that: 1) the s ediment from B1 to B3 became finer, worse sorting and positively skewed; 2) the diversification of matter origin became more and more evident from east to west; 3) the sediments over the region were of the same origin, as indicated by their similar colors and grain sizes. The data indicated that stratification occurred in the flood season, from upstream to downstream, and a salt wedge was formed. The water column was well mixed, but the longitudinal gradient of the salinity w as larger on spring tide. The results also showed that the dominating mechanism of suspended sediment transport in the Yalu River estuary was T1, T2, T3 and T5. The non-tidal steady advection transport was restricted by the net transport o f suspended sediment induced by mass Stoked drift directed to landwards, then th e net sediment transport rate were decreased and the turbidity maxima was also f avored to forming and extending.
文摘The reform of quality education requires not only the reform of cultural curriculum, but also the reform of physical education curriculum. As one of the important contents of physical education teaching, basketball in colleges and universities has a direct impact on the quality of physical education teaching, which not only explains the importance of basketball in physical education teaching in colleges and universities. It also shows the popularity of basketball among college students. However, from the current situation of basketball teaching in colleges and universities, there are still some problems, which not only affect the quality of teaching, but also affect the sustainable development of basketball. This paper discusses the influencing factors and development trend of college basketball teaching reform.
