Publications by authors named "Pan Qifeng"

Article Synopsis
  • Plastic film capacitors are favored for their durability and energy storage capabilities but face limitations due to the low dielectric constant of BOPP.
  • Poly(vinylidene fluoride) (PVDF) presents a better dielectric constant but suffers from high losses and heat generation.
  • A PTFE coating on PVDF significantly reduces leakage current, improving breakdown strength by 30.8% and enhancing energy storage density by 70%, offering a promising approach for using PVDF in capacitors.
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Many human craniofacial dimensions are largely of neutral adaptive significance, and an analysis of their variation can serve as an indication of the extent to which any given population is genetically related to or differs from any other. When 24 craniofacial measurements of a series of human populations are used to generate neighbor-joining dendrograms, it is no surprise that all modern European groups, ranging all of the way from Scandinavia to eastern Europe and throughout the Mediterranean to the Middle East, show that they are closely related to each other. The surprise is that the Neolithic peoples of Europe and their Bronze Age successors are not closely related to the modern inhabitants, although the prehistoric/modern ties are somewhat more apparent in southern Europe.

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