Absorption spectra obtained at higher oxygen concentrations revealed the spectrum of a new species, which we interpret as that of a naphthalene-oxygen charge-transfer complex. The binding energy of ...

The aqueous phase containing anthocyanins was recovered, 600 µl of HCl 1% (v/v) in methanol was added, and absorption was determined spectrophotometrically. Relative anthocyanin concentrations were ...

An optical spectroscopic technique, surface-enhanced Raman spectroscopy (SERS), mostly used in the research setting for liquid sample analysis, has recently been applied to breath-based diagnostics.

1 Faculty of Marine Science and Technology, Fukui Prefectural University, Obama, Fukui, Japan 2 Faculty of Pharmaceutical Sciences, Toho University, Funabashi, Chiba, Japan The in vivo absorption ...