Naifu Chen

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This study analyzed the effects of ecological factors on secondary metabolites of Scutellaria baicalensis using two sources: 92 individual roots of S. baicalensis from all over China, and secondary metabolites, medicinal materials and inorganic element contents obtained from the testing of 92 S. baicalensis rhizosphere soil samples. The study used(More)
An inherent zero-voltage and zero-current-switching phase-shifted full-bridge converter with reverse-blocking insulated-gate bipolar transistor (IGBT) or non-punch-through IGBT is proposed in this paper. This converter not only ensures that the switches in the lagging leg works at zero-current switching, but also minimizes circulating conduction loss(More)
OBJECTIVE To investigate the genetic diversity and structure of Dendrobium huoshanense, a (CT)n enriched microsatellite library was constructed using a magnetic beads enrichment procedure. METHOD The 3'-biotinylated oligonucleotide probe was used to hybridize with the digested D. huoshanense genomic DNA fragments whose both ends were ligated with(More)
The Bombyx mori nucleopolyhedrovirus (BmNPV) is a principal pathogen of the domestic silkworm. The disease often breaks out in sericultural countries and due to its high infectivity; it is difficult to control, resulting in heavy economic loss. In order to develop a rapid, sensitive visual detection and simple-to-use novel technology for detection of BmNPV,(More)
BACKGROUND For genuine medicinal material in Chinese herbs; the efficient, rapid, and precise identification is the focus and difficulty in the filed studying Chinese herbal medicines. Chrysanthemum morifolium as herbs has a long planting history in China, culturing high quality ones and different varieties. Different chrysanthemum varieties differ in(More)
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