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Arctigenin is the main active ingredient of Fructus Arctii for the treatment of type 2 diabetes. In this study, the pharmacokinetics of arctigenin in normal and type 2 diabetic rats following oral and intravenous administration was investigated. As compared to normal rats, Cmax and AUC0–10h values of oral arctigenin in diabetic rats increased by 356.8% and 223.4%, respectively. In contrast, after...
We transmit a frequency comb through an enhancement cavity by PDH locking with a graphene modulator. We comb-resolve the 1940 to 2115 nm spectrum with stable repetition rate and offset frequency via Fourier transform spectrometry.
We combine a Tm-fiber frequency comb, phase-locked doubly-resonant GaAs optical parametric oscillator, multipass cell, and Fourier transform spectrometer to measure comb-resolved spectra at wavelengths of 3.1 to 5.5 micrometers for multiple gases at trace concentrations.
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