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Sökning: WFRF:(Fu Chengxin)

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1.
  • Li, S., et al. (författare)
  • High-performance Sn/carbon composite anodes derived from Sn(II) acetate/polyacrylonitrile precursors by electrospinning technology
  • 2013
  • Ingår i: Current organic chemistry. - : Bentham Science Publishers Ltd.. - 1385-2728 .- 1875-5348. ; 17:13, s. 1448-1454
  • Tidskriftsartikel (refereegranskat)abstract
    • Sn/carbon composite nanofibers with various compositions were prepared from Sn(II) acetate/polyacrylonitrile (PAN) precursors by a combination of electrospinning and carbonization methods, and their potential use as anode materials for rechargeable lithiumion batteries was investigated. The composite electrode derived from 20 wt% Sn(II) acetate/PAN precursor showed excellent electrochemical properties, including a large reversible capacity of 699 mAh g-1 and a high capacity retention of 83% in 50 cycles. Sn/carbon composite nanofibers exhibited enhanced electrochemical performance ascribing to the combination of the properties of both Sn nanoparticles (large Li storage capability) and carbon matrices (long cycle life), and therefore could be potentially used in high-energy rechargeable lithium-ion batteries.
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2.
  • Zhu, Shanshan, et al. (författare)
  • Genomic insights on the contribution of balancing selection and local adaptation to the long-term survival of a widespread living fossil tree,Cercidiphyllum japonicum
  • 2020
  • Ingår i: New Phytologist. - : WILEY. - 0028-646X .- 1469-8137. ; 228:5, s. 1674-1689
  • Tidskriftsartikel (refereegranskat)abstract
    • 'Living fossils' are testimonies of long-term sustained ecological success, but how demographic history and natural selection contributed to their survival, resilience, and persistence in the face of Quaternary climate fluctuations remains unclear. To better understand the interplay between demographic history and selection in shaping genomic diversity and evolution of such organisms, we assembled the whole genome ofCercidiphyllum japonicum, a widespread East Asian Tertiary relict tree, and resequenced 99 individuals ofC. japonicumand its sister species,Cercidiphyllum magnificum(Central Japan). We dated this speciation event to the mid-Miocene, and the intraspecific lineage divergence ofC. japonicum(China vs Japan) to the Early Pliocene. Throughout climatic upheavals of the late Tertiary/Quaternary, population bottlenecks greatly reduced the genetic diversity ofC. japonicum. However, this polymorphism loss was likely counteracted by, first, long-term balancing selection at multiple chromosomal and heterozygous gene regions, potentially reflecting overdominance, and, second, selective sweeps at stress response and growth-related genes likely involved in local adaptation. Our findings contribute to a better understanding of how living fossils have survived climatic upheaval and maintained an extensive geographic range; that is, both types of selection could be major factors contributing to the species' survival, resilience, and persistence.
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