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| 1 | Trace elements in tree rings and their environmental effects: A case study in Xi’an City显示文摘Using wet digested method and ICP mass spectrometer, we analyzed the concentration of five trace elements (Cd, Mn, P, Zn and Pb) for the tree rings from both urban and suburbs of Xi'an. At the urban sampling site, one Chinese mahogany (Toona sinensis) disc and one phoenix tree (Firmiana simplex) disc were sampled from a steelworks in Xi'an City. At the suburb site, a Chinese mahogany disc was collected from a village in the south of the City. In addition, some soils near the roots of the sampled trees were collected. The analysis results indicate that the concentration of each of the five elements in annual rings has a positive correlation with the production of the steelworks. Statistical calculations show that Pb and Mn elements were stable without lag effects. That means these two elements do not move between rings. Cd displayed one year moving, P two years and Zn three years. These results are quite similar to those found by other methods. | LIU Yu TA WeiYuan BAO TingYi YANG ZengYue SONG HuiMing LIU Na WANG WeiPing ZHANG HongYi ZHANG Wei AN ZhiSheng | 2009 | Science China Earth Sciences2009，52，4： | 2 |
| 2 | A(t,n)Multi-secret Sharing Scheme显示文摘 | Yang Chouchen Chang Tingyi Hwang Min-Shiang | 2004 | Applied Mathematics and Computation2004，151，2： | 1 |
| 3 | A (t, n) Multisecret Sharing Scheme显示文摘 | Yang Chouchen Chang Tingyi Hwang Min-Shiang | 2004 | Applied Mathematics and Computation2004，151，2： | 1 |
| 4 | A threshold signature scheme for group communications without a shared distribution center 显示文摘 | Chang Tingyi Yang Chouchen Hwang Minshiang | 2004 | Future Generation Computer Systems2004，20，6： | 1 |
| 5 | Simplified molecular gas film lubrication equation and accommodation coefficient effieients显示文摘 | SHI Baojun JI Jiadong YANG Tingyi | 2011 | Microsystem Technologies2011，17，： | 1 |
| 6 | A multi-secret sharing scheme显示文摘 | Chang TingYi Hwang MinShiang | 2004 | Applied Mathematics and Computa-tion2004，151，2： | 1 |
| 7 | A threshold signature scheme for group communications without a shared distribution center显示文摘 | Chang Tingyi Yang Chouchen Hwang Minshiang | 2004 | Future Generation Computer Systems2004，20，6： | 1 |
| 8 | A communication efficient three-party password authenticated key exchange protocol 显示文摘 | Chang Tingyi Hwang Minshiang Yang Weipang | 2011 | Information Sciences2011，181，1： | 1 |
| 9 | A threshold signature scheme for group communications without a shared center显示文摘 | Chang Tingyi Yang Chouchen Huang Minshiang | 2004 | Future Generation Computer Systems2004，20，6： | 1 |
| 10 | A (t, n) Multisecret Sharing Scheme显示文摘 | Yang Chouchen Chang Tingyi Hwang Minshiang | 2004 | Applied Mathematics and Computation2004，151，2： | 1 |
| 11 | A(t,n)Multi-secret Sharing Scheme显示文摘 | Yang Chouchen Chang Tingyi Hwang Miashiang | 2004 | Applied Mathematics and Computation2004，151，2： | 1 |
| 12 | Enhanced chitosan beads-supported Fe(0)-nanoparticles for removal of heavy metals from electroplating wastewater in permeable reactive barriers显示文摘 | Liu Tingyi Yang Xi Wang Zhongliang | 2013 | Water Res2013，47，17： | 1 |
| 13 | Position and orien- tation characteristic equation for topological design of robot mechanisms显示文摘 | Yang Tingyi Liu Anxin Jin Qiong | | 0，，02： | 1 |
| 14 | An improvement on the Lin-Wu (t, n) threshold verifiable multi-secret sharing scheme 显示文摘 | Chang Tingyi Hwang Minshiang Yang Weipang | 2005 | Applied Mathematics and Computation2005，163，1： | 1 |
| 15 | An improvement on the Lin-Wu (t,n) threshold verifiable multi-secret sharing scheme显示文摘 | Chang Tingyi Hwang Minshiang Yang Weipang | 2005 | Applied Mathematics and Computation2005，163，： | 1 |
| 16 | A (t,n)multi-secret sharing scheme显示文摘 | Yang Chaochen Chang Tingyi Min-Shiang Hwang | 2004 | Applied Mathematics and Computation2004，151，： | 1 |
| 17 | A (t,n) multi-secret sharing scheme 显示文摘 | Yang Chouehen Chang Tingyi Hwang Minshiang | 2004 | Applied Mathematics and Computation2004，151，2： | 1 |
| 18 | A (t,n) multi-secret sharing seheme显示文摘 | Yang Chouchen Chang Tingyi Hwang Minshiang | 2004 | Applied Mathematics and Computation2004，151，2： | 1 |
| 19 | A Communication-efficient Three-party Password Authenticated Key Exchange Protocol显示文摘 | Chang Tingyi Hwang Min-Shiang Yang Weipang | | 0，，01： | 1 |
| 20 | Simplified modle of Reynolds e- quation with linearized flow rate for ultra-thin gas film lubrication in hard disk drives显示文摘 | Shi Baojun Yang Tingyi | 2010 | Microsystem Technolo- gy2010，16，10： | 1 |
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