Thus Euglena shows a diurnal rhythm in the speed at which it moves to a light source.

当眼虫被放在强光下时，现出昼夜节律。

Diurnal tide and tidal current at different times and the eulerian residual current are calculated,also the cotidal line,the iso-amplitude curves and the distribution of tidal current ellip...

应用该模型可以较系统地了解罗源湾全潮潮汐、潮流状况。