A recent study by Liu et al.(2020)suggested that due to the saturation of equatorially trapped planetary waves with different dynamical types,temporal periods,meridional and baroclinic modes,complex layer structures o...A recent study by Liu et al.(2020)suggested that due to the saturation of equatorially trapped planetary waves with different dynamical types,temporal periods,meridional and baroclinic modes,complex layer structures of vertical velocity shear and hence turbulent mixing could frequently occur in the thermocline of the eastern equatorial Pacific.We investigated the occurrence of the interior turbulent mixing as indicated by shear instabilities,above the Equatorial Undercurrent(EUC)core at three equatorial sites along 140°W,170°W,and 165°E,respectively,based mainly on data from the Tropical Atmosphere and Ocean(TAO)mooring array.We found that turbulent mixing bursts persisted in the thermocline of all three sites.Specifically,the interior turbulent mixing layers(ITMLs)could occur in probability of approximately 68%,53%,and 48%at the three sites,respectively.The overall occurrence probability shows obvious and similar biannual variations at 140°W and 170°W,which is higher in boreal from late summer to winter and lower in spring.Vertically,the ITMLs are primarily located above the EUC core and prevail in deeper(shallower)layers from late summer to winter(spring).Most ITMLs(70%)lasted for hours to 3 days,and a few of them(15%)for more than 7 days.The thicknesses of ITMLs were concentrated between 15 and 55 m.At 165°E,the vertical distribution of ITML occurrence probability was different from that at 140°W and 170°W,as it did not show a preference for depths;the durations of ITMLs are short(also from hours to several days)and their thicknesses were between 5 and 25 m.These properties,particularly the high occurrence probability,and short durations demonstrated the persistence of thermocline mixing in the western to eastern equatorial Pacific thermocline and confirmed the generation mechanism by persistent equatorial waves as well.展开更多
在栽培条件一致的情况下,测定了’L808’和ww808(子实体无香菇香味)2个香菇菌株子实体的粗蛋白、水解氨基酸、游离氨基酸、可溶性糖(醇)、有机酸和5’-核苷酸的组成及含量,并分析其营养成分和呈味物质的差异。结果表明:’L808’和ww808...在栽培条件一致的情况下,测定了’L808’和ww808(子实体无香菇香味)2个香菇菌株子实体的粗蛋白、水解氨基酸、游离氨基酸、可溶性糖(醇)、有机酸和5’-核苷酸的组成及含量,并分析其营养成分和呈味物质的差异。结果表明:’L808’和ww808菌株的氨基酸比值系数分分别为88.98和87.69,’L808’菌株的蛋白质营养价值高于ww808菌株;’L808’菌株可溶性糖(醇)及鲜味氨基酸含量高于ww808菌株,有机酸、甜味氨基酸以及鲜味核苷酸含量较ww808菌株低。综合各种呈鲜成分,’L808’和ww808菌株的等鲜浓度值(EUC)分别为38.70 g MSG/(100 g)和53.38 g MSG/(100 g),ww808菌株鲜味呈鲜效果较’L808’菌株更突出。展开更多
基金Supported by the National Natural Science Foundation of China(NSFC)(No.41730534)the Laoshan Laboratory Science and Technology Innovation Program(No.LSKJ 202202502)+1 种基金the NSFC(Nos.41976012,42090044)the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB42000000)。
文摘A recent study by Liu et al.(2020)suggested that due to the saturation of equatorially trapped planetary waves with different dynamical types,temporal periods,meridional and baroclinic modes,complex layer structures of vertical velocity shear and hence turbulent mixing could frequently occur in the thermocline of the eastern equatorial Pacific.We investigated the occurrence of the interior turbulent mixing as indicated by shear instabilities,above the Equatorial Undercurrent(EUC)core at three equatorial sites along 140°W,170°W,and 165°E,respectively,based mainly on data from the Tropical Atmosphere and Ocean(TAO)mooring array.We found that turbulent mixing bursts persisted in the thermocline of all three sites.Specifically,the interior turbulent mixing layers(ITMLs)could occur in probability of approximately 68%,53%,and 48%at the three sites,respectively.The overall occurrence probability shows obvious and similar biannual variations at 140°W and 170°W,which is higher in boreal from late summer to winter and lower in spring.Vertically,the ITMLs are primarily located above the EUC core and prevail in deeper(shallower)layers from late summer to winter(spring).Most ITMLs(70%)lasted for hours to 3 days,and a few of them(15%)for more than 7 days.The thicknesses of ITMLs were concentrated between 15 and 55 m.At 165°E,the vertical distribution of ITML occurrence probability was different from that at 140°W and 170°W,as it did not show a preference for depths;the durations of ITMLs are short(also from hours to several days)and their thicknesses were between 5 and 25 m.These properties,particularly the high occurrence probability,and short durations demonstrated the persistence of thermocline mixing in the western to eastern equatorial Pacific thermocline and confirmed the generation mechanism by persistent equatorial waves as well.
文摘在栽培条件一致的情况下,测定了’L808’和ww808(子实体无香菇香味)2个香菇菌株子实体的粗蛋白、水解氨基酸、游离氨基酸、可溶性糖(醇)、有机酸和5’-核苷酸的组成及含量,并分析其营养成分和呈味物质的差异。结果表明:’L808’和ww808菌株的氨基酸比值系数分分别为88.98和87.69,’L808’菌株的蛋白质营养价值高于ww808菌株;’L808’菌株可溶性糖(醇)及鲜味氨基酸含量高于ww808菌株,有机酸、甜味氨基酸以及鲜味核苷酸含量较ww808菌株低。综合各种呈鲜成分,’L808’和ww808菌株的等鲜浓度值(EUC)分别为38.70 g MSG/(100 g)和53.38 g MSG/(100 g),ww808菌株鲜味呈鲜效果较’L808’菌株更突出。
