Publications by authors named "Peng-Yu Han"

Background: Previously, we have successfully constructed replication-competent hepatitis B virus (HBV) vectors by uncoupling the P open reading frame (ORF) from the preC/C ORF to carefully design the transgene insertion site to overcome the compact organization of the HBV genome and maintain HBV replication competence. Consequently, the replication-competent HBV vectors carrying foreign genes, including pCH-BsdR, carrying blasticidin resistance gene (399 bp), and pCH-hrGFP, carrying humanized renilla green fluorescent protein gene (720 bp), were successfully obtained. However, the replication efficiency of the former is higher but it is tedious to use, while that of the latter is poor and cannot be quantified.

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It is common knowledge that soils irrigated with wastewater accumulate heavy metals more than those irrigated with cleaner water sources. However, little is known on metal concentrations in soils and cultivars after the cessation of wastewater use. This study assessed the accumulation and health risk of heavy metals 3 years post-wastewater irrigation in soils, vegetables, and farmers' hair.

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Article Synopsis
  • The authors studied multiwalled carbon nanotubes (MWCNTs) at terahertz (THz) frequencies using terahertz time-domain spectroscopy and scanning electron microscopy for detailed analysis.
  • The findings indicated that as frequency increases from 0.2 to 2 THz, the refractive index decreases while absorption coefficients rise, with a fit line slope of 1.92 for the absorption data.
  • Additionally, the study revealed that MWCNTs are primarily composed of 94% carbon, with diameters ranging from 5 to 25 nm, and their THz properties are influenced by their chemical composition and molecular weight.
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