SEARCH Articles Figures Tables Infrared reflectance spectroscopy Infrared reflective Near-infrared diffuse reflectance spectroscopy Near-infrared diffuse reflectance spectroscopy NIRS) Near-infrared diffuse reflection spectroscopy Near-infrared reflectance Near-infrared reflectance spectroscopy NIRS) Near-infrared spectroscopy diffuse reflectance mode Reflectance spectroscopy Reflection infrared spectroscopy Reflection spectroscopy Reflectivity spectroscopy