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ABSTRACT: To study the effectiveness and feasibility of remote sensing technology in the rare species of wild plant resources.
The mechanism and characteristics of Paeonia sinjiangensis were analyzed to find the possibility of extracting from TM imagery. An expert system has been used with Landsat Thematic Mapper data to derive P. sinjiangensis. Then logical decision rules were used with the various datasets to assign values.
The land for P. sinjiangensis possible growth were mapped and accuracy tested was approving.
The results suggest that the remote sensing expert interpretation system using satellite imagery and ancillary data will be feasible for research of rare wild medicinal plants distribution.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica 09/2008; 33(16):1941-4.
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ABSTRACT: 20 meters long length of in-situ SiC doped MgB<sub>2</sub>/Fe, MgB<sub>2</sub>/Nb/Cu/stainless steel (SS) mono- or MgB<sub>2</sub>/Nb/Cu/Fe multi- filamentary wires with high critical current densities have been prepared by combining both powder in tube (PIT) and continuous tube forming & filling (CTFF) processes. Particular efforts were made in view of the optimization of the manufacturing and annealing processes of the wires. The as obtained mono- wires were sintered under a vacuum furnace and the effects of the sintering temperature on the properties of the MgB<sub>2</sub> wires were investigated by the analysis of XRD, SEM and the J<sub>c</sub> measurements. The optimized sintering process was found to be 830degC for 15 minutes. It was shown that the magnetic J<sub>c</sub> value of MgB<sub>2</sub>/Nb/Cu/SS wire reaches 6times10<sup>5</sup> A/cm<sup>2</sup> (10 K, 0 T), while the transport J<sub>c</sub> value in this 8 at.% SiC doped MgB<sub>2</sub>/Fe mono- filamentary wire is more than 10<sup>4</sup> A/cm<sup>2</sup> at 4.2 K and a field of 11 T. The estimated J<sub>c</sub> value approaches 10<sup>6</sup> A/cm<sup>2</sup> at 4.2 K and zero field. Further enhancement of Jc in both mono- and multi- wires is expected for improving the filling density of the CTFF + PIT processing.
IEEE Transactions on Appiled Superconductivity 07/2007; · 1.04 Impact Factor
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ABSTRACT: This paper has studied the influence of phosphate (Pi, one of inorganic ligands) and citrate (Cit, one of organic ligands) on accumulation and fractionation of REEs in wheat based on aqueous culture, added with extraneous mixed REEs (MRE) and ICP-MS analysis technology. The results show that initial phosphate (Pi) solution of different levels followed by exposure to fixed-MRE solution has no significant effects on accumulation of the total concentrations of REEs (sigma REE) in the wheat roots, but it decrease the REE dramatically in the wheat leaves. Simultaneous culture of wheat with mixture of MRE and citrate solution caused obvious decreases of the sigma REE both in wheat roots and leaves. Compared to the control (no Pi or citrate was added), the distribution and fractionation characters of MRE had M-type tetrad effect and MREE enrichment in wheat roots, and W-type tetrad effect and HREE enrichment in wheat leaves. Different levels of Pi had no significant effects on the tetrad effect of MRE, but it notable increased the enrichment of HREE in wheat leaves. Added with citrate of different levels led the fractionation of REE decreasing gradually in wheat roots and leaves, as the concentration of citrate > or = 150 micromol x L(-1), light REE (LREE) enrichment both existed in the roots and leaves.
Huan jing ke xue= Huanjing kexue / [bian ji, Zhongguo ke xue yuan huan jing ke xue wei yuan hui "Huan jing ke xue" bian ji wei yuan hui.] 10/2005; 26(5):169-73.
