Results 21 to 30 of about 176,371 (204)

Theoretical Spectra of Terrestrial Exoplanet Surfaces [PDF]

open access: yes, 2012
We investigate spectra of airless rocky exoplanets with a theoretical framework that self-consistently treats reflection and thermal emission. We find that a silicate surface on an exoplanet is spectroscopically detectable via prominent Si-O features in ...
Batalha   +28 more
core   +2 more sources

Reflectance Spectroscopy in Geology and Soil Sciences: Literature Review

open access: yesQuaestiones Geographicae, 2022
This article presents a literature review of studies utilising reflectance spectroscopy in geological research. We describe a variety of available spectral libraries together with providing examples of spectral reflectance diagrams, and explain the basic
Badura Ireneusz, Dąbski Maciej
doaj   +1 more source

Multiwavelength Fluorescence and Diffuse Reflectance Spectroscopy for an In Situ Analysis of Kidney Stones

open access: yesPhotonics, 2023
This study explores the use of diffuse reflectance spectroscopy (DRS) and multiwavelength fluorescence spectroscopy for real-time kidney stone identification during laser lithotripsy.
Polina S. Tseregorodtseva   +15 more
doaj   +1 more source

A holistic multimodal approach to the non-invasive analysis of watercolour paintings [PDF]

open access: yes, 2015
A holistic approach using non-invasive multimodal imaging and spectroscopic techniques to study the materials (pigments, drawing materials and paper) and painting techniques of watercolour paintings is presented.
Bailey, K   +6 more
core   +2 more sources

Hapke-based computational method to enable unmixing of hyperspectral data of common salts

open access: yesChemistry Central Journal, 2018
Environmental scientists are currently assessing the ability of hyper-spectral remote sensing to detect, identify, and analyze natural components, including minerals, rocks, vegetation and soil.
Fares M. Howari   +3 more
doaj   +1 more source

Discrimination of Nasopharyngeal Carcinoma from Noncancerous Ex Vivo Tissue Using Reflectance Spectroscopy

open access: yesJournal of Spectroscopy, 2016
Reflectance spectroscopy is a low-cost, nondestructive, and noninvasive method for detection of neoplastic lesions of mucosal tissue. This study aims to evaluate the capability of reflectance spectroscopy system under white light (400–700 nm) with a ...
Zhihong Xu   +7 more
doaj   +1 more source

Application of near-infrared reflectance for quantitative assessment of soil properties

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2018
Beginning with a discussion of reflectance spectroscopy, this article attempts to provide a review on fundamental concepts of reflectance spectroscopic techniques. Their applications as well as exploring the role of Near-infrared reflectance spectroscopy
E.S. Mohamed   +3 more
doaj   +1 more source

Rotationally resolved spectroscopy of (20000) Varuna in the near-infrared [PDF]

open access: yes, 2014
Models of the escape and retention of volatiles by minor icy objects exclude any presence of volatile ices on the surface of TNOs smaller than ~1000km in diameter at the typical temperature in this region of the solar system, whereas the same models show
Emery, J. P.   +4 more
core   +2 more sources

Recent applications of vibrational mid-Infrared (IR) spectroscopy for studying soil components: a review [PDF]

open access: yesJournal of Central European Agriculture, 2015
The present review highlights the recent applications of mid-infrared spectroscopy and in particular of diffuse reflectance spectroscopy (DRIFT) and attenuated total reflectance (ATR) and processing methods (e.g., deconvolution, derivative and ...
Anna Tinti   +3 more
doaj   +1 more source

Evaluation and Normalization of Cloud Obscuration Related BRDF Effects in Field Spectroscopy

open access: yesRemote Sensing, 2009
The impact of target bidirectional reflectance in dual field of view spectroscopy was described and quantified using field measurements and ray-tracing simulations.
Jan Stuckens   +4 more
doaj   +1 more source

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