A grass (Italian rye grass) experiment with complete design of three factors (Hg, grass and exposure) andtwo levels (with and without the factor tested) was carried out in Goteborg, Sweden from May to September,1995, ...A grass (Italian rye grass) experiment with complete design of three factors (Hg, grass and exposure) andtwo levels (with and without the factor tested) was carried out in Goteborg, Sweden from May to September,1995, toward understanding the effect of mercury deposition on plant Hg conteot and its distribution. It hasbeen foulld that besides the two general pathways of Hg absorption, i.e. root uptake and foliar absorption,mercury deposition can also significantly increase Hg content and total load in grass plant. Such effectsseem to be condned only within the above-ground parts of grass plant. Estimate has been made to makeclear of the contributions of different pathways to Hg content and total Hg load in the upper part of grass.Results showed that the coDtribution of Hg deposition accounted for 27%-32% of Hg content in the above-ground parts of grass plant without adding Hg to the soil, decreasing with the increase of soil and/or air Hgconcentrations. The increment of Hg load in the upper part of grass plant caused by Hg deposition duringan interval of two weeks varied between O.o1~O.o7 pg pot-1, contributing to 17%~48% of the total Hg loadin grass plant exposed.展开更多
The efficient integration of satellite and terrestrial networks has become an important component for 6 G wireless architectures to provide highly reliable and secure connectivity over a wide geographical area.As the ...The efficient integration of satellite and terrestrial networks has become an important component for 6 G wireless architectures to provide highly reliable and secure connectivity over a wide geographical area.As the satellite and cellular networks are developed separately these years,the integrated network should synergize the communication,storage,computation capabilities of both sides towards an intelligent system more than mere consideration of coexistence.This has motivated us to develop double-edge intelligent integrated satellite and terrestrial networks(DILIGENT).Leveraging the boost development of multi-access edge computing(MEC)technology and artificial intelligence(AI),the framework is entitled with the systematic learning and adaptive network management of satellite and cellular networks.In this article,we provide a brief review of the state-of-art contributions from the perspective of academic research and standardization.Then we present the overall design of the proposed DILIGENT architecture,where the advantages are discussed and summarized.Strategies of task offloading,content caching and distribution are presented.Numerical results show that the proposed network architecture outperforms the existing integrated networks.展开更多
文摘A grass (Italian rye grass) experiment with complete design of three factors (Hg, grass and exposure) andtwo levels (with and without the factor tested) was carried out in Goteborg, Sweden from May to September,1995, toward understanding the effect of mercury deposition on plant Hg conteot and its distribution. It hasbeen foulld that besides the two general pathways of Hg absorption, i.e. root uptake and foliar absorption,mercury deposition can also significantly increase Hg content and total load in grass plant. Such effectsseem to be condned only within the above-ground parts of grass plant. Estimate has been made to makeclear of the contributions of different pathways to Hg content and total Hg load in the upper part of grass.Results showed that the coDtribution of Hg deposition accounted for 27%-32% of Hg content in the above-ground parts of grass plant without adding Hg to the soil, decreasing with the increase of soil and/or air Hgconcentrations. The increment of Hg load in the upper part of grass plant caused by Hg deposition duringan interval of two weeks varied between O.o1~O.o7 pg pot-1, contributing to 17%~48% of the total Hg loadin grass plant exposed.
基金supportedin part by the National Science Foundation of China(NSFC)under Grant 61631005,Grant 61771065,Grant 61901048in part by the Zhijiang Laboratory Open Project Fund 2020LCOAB01in part by the Beijing Municipal Science and Technology Commission Research under Project Z181100003218015。
文摘The efficient integration of satellite and terrestrial networks has become an important component for 6 G wireless architectures to provide highly reliable and secure connectivity over a wide geographical area.As the satellite and cellular networks are developed separately these years,the integrated network should synergize the communication,storage,computation capabilities of both sides towards an intelligent system more than mere consideration of coexistence.This has motivated us to develop double-edge intelligent integrated satellite and terrestrial networks(DILIGENT).Leveraging the boost development of multi-access edge computing(MEC)technology and artificial intelligence(AI),the framework is entitled with the systematic learning and adaptive network management of satellite and cellular networks.In this article,we provide a brief review of the state-of-art contributions from the perspective of academic research and standardization.Then we present the overall design of the proposed DILIGENT architecture,where the advantages are discussed and summarized.Strategies of task offloading,content caching and distribution are presented.Numerical results show that the proposed network architecture outperforms the existing integrated networks.
