Seasonal cycle is the most significant signals of topography and circulation in the Bohai Sea (BS)and Yellow Sea (YS) forced by prevailing monsoon and is still poorly understood due to lack of data in their interiors....Seasonal cycle is the most significant signals of topography and circulation in the Bohai Sea (BS)and Yellow Sea (YS) forced by prevailing monsoon and is still poorly understood due to lack of data in their interiors. In the present study, seasonal cycles of topography in the BS and YS and its relationship with atmospheric forcing and oceanic adjustment were examined and discussed using TOPEX/Poseidon and ERS-1/2 Sea Level Anomalies (SLA) data. Analyses revealed complicated seasonal cycles of topography composed mainly of2 REOF modes, the winter-summer mode (WIM) and spring-autumn mode (SAM). The WIM with action center in the BS displayed peak and southward pressure gradient in July, and valley and northward pressure gradient in January, which is obviously the direct response to monsoon with about 1-month response time. The SAM with action center in the western south YS displayed peak and northward pressure gradient in October and valley and southward pressure gradient in April. After the mature period of monsoon, the action center in the BS became weakened while that in the western south YS became strengthened because of regional convergence or divergence induced by seasonal variations of the Taiwan Warm Current and Yellow Sea Coastal Current. The direct response of topography to monsoon resulted in the WIM, while oceanic adjustment of topography played an important role in the forming of the SAM.展开更多
By adjusting the testing condition,we obtained the best pulse hydrodynamic per-formance of aortic valve allograft tested in the duplicator made by Chengdu Universi-ty of Science and Technology.Meanwhile,we regarded th...By adjusting the testing condition,we obtained the best pulse hydrodynamic per-formance of aortic valve allograft tested in the duplicator made by Chengdu Universi-ty of Science and Technology.Meanwhile,we regarded the condition of the duplicatoras the consilience of human left circulation.By comparing the results(comparison)ofthe different periods of the cardiac cycle including beat to beat interval(RR),systolictime(ST),left ventricular eject time(LVET)and the relationship between them,which got from the observation on volunteers with normal or prostheses aortic valveby using two dimensional Doppler echocardiography,with that of the testing condi-展开更多
文摘Seasonal cycle is the most significant signals of topography and circulation in the Bohai Sea (BS)and Yellow Sea (YS) forced by prevailing monsoon and is still poorly understood due to lack of data in their interiors. In the present study, seasonal cycles of topography in the BS and YS and its relationship with atmospheric forcing and oceanic adjustment were examined and discussed using TOPEX/Poseidon and ERS-1/2 Sea Level Anomalies (SLA) data. Analyses revealed complicated seasonal cycles of topography composed mainly of2 REOF modes, the winter-summer mode (WIM) and spring-autumn mode (SAM). The WIM with action center in the BS displayed peak and southward pressure gradient in July, and valley and northward pressure gradient in January, which is obviously the direct response to monsoon with about 1-month response time. The SAM with action center in the western south YS displayed peak and northward pressure gradient in October and valley and southward pressure gradient in April. After the mature period of monsoon, the action center in the BS became weakened while that in the western south YS became strengthened because of regional convergence or divergence induced by seasonal variations of the Taiwan Warm Current and Yellow Sea Coastal Current. The direct response of topography to monsoon resulted in the WIM, while oceanic adjustment of topography played an important role in the forming of the SAM.
文摘By adjusting the testing condition,we obtained the best pulse hydrodynamic per-formance of aortic valve allograft tested in the duplicator made by Chengdu Universi-ty of Science and Technology.Meanwhile,we regarded the condition of the duplicatoras the consilience of human left circulation.By comparing the results(comparison)ofthe different periods of the cardiac cycle including beat to beat interval(RR),systolictime(ST),left ventricular eject time(LVET)and the relationship between them,which got from the observation on volunteers with normal or prostheses aortic valveby using two dimensional Doppler echocardiography,with that of the testing condi-
