The contents of As, Cd, Hg and Pb in root tubers of annual and biennial plants of Polygonum multiflorum Thunb. in Jiangsu Province were 0.32, 0.24, 0, 1.25 and 0.20, 0.26, 1.67×10 -4, 1.32 mg·kg -1 respectiv...The contents of As, Cd, Hg and Pb in root tubers of annual and biennial plants of Polygonum multiflorum Thunb. in Jiangsu Province were 0.32, 0.24, 0, 1.25 and 0.20, 0.26, 1.67×10 -4, 1.32 mg·kg -1 respectively, which totally met the standards of GTSIEMPP (WM2—2001). Biology concentration factors (BCF) of Cd is 2.4-2.6, which indicates that the root tuber of P. multiflorum has a strong accumulative action to Cd. While the accumulative action to As, Hg and Pb is not strong, BCF are 0.025-0.015, 0-6.40×10 -4 and 0.06 respectively.展开更多
Storage network is popular solution to constraint of server in storage field. As the Gibson's standards ,the performance of multi-level networked RAID based Cluster is almost same to the improved 2D-parity. Compar...Storage network is popular solution to constraint of server in storage field. As the Gibson's standards ,the performance of multi-level networked RAID based Cluster is almost same to the improved 2D-parity. Compared with other structure, it's easy to realize.展开更多
文摘The contents of As, Cd, Hg and Pb in root tubers of annual and biennial plants of Polygonum multiflorum Thunb. in Jiangsu Province were 0.32, 0.24, 0, 1.25 and 0.20, 0.26, 1.67×10 -4, 1.32 mg·kg -1 respectively, which totally met the standards of GTSIEMPP (WM2—2001). Biology concentration factors (BCF) of Cd is 2.4-2.6, which indicates that the root tuber of P. multiflorum has a strong accumulative action to Cd. While the accumulative action to As, Hg and Pb is not strong, BCF are 0.025-0.015, 0-6.40×10 -4 and 0.06 respectively.
文摘Storage network is popular solution to constraint of server in storage field. As the Gibson's standards ,the performance of multi-level networked RAID based Cluster is almost same to the improved 2D-parity. Compared with other structure, it's easy to realize.
