Results 11 to 20 of about 79,911 (310)

HISTORICAL PLASTER COMPOSITION DETECTION USING REFLECTANCE SPECTROSCOPY [PDF]

open access: yesCivil Engineering Journal, 2016
Reflectance spectroscopy is a non-invasive method that is based on the fact that a specific object/material provides various reflectances in different wavelengths across the spectral range.
Eva Matoušková   +2 more
doaj   +1 more source

Early Noninvasive Monitoring of Hypoxic State of Diabetic Foot Based on Diffuse Reflectance Spectroscopy

open access: yesFrontiers in Physics, 2022
Early accurate diagnosis and assessment severity of the hypoxic state of diabetic foot is of paramount importance. In this paper, a noninvasive monitoring method of the hypoxic state of the diabetic foot based on diffuse reflectance spectroscopy is ...
Ge Xu   +17 more
doaj   +1 more source

Diffuse Reflectance Spectroscopy of the Oral Mucosa: In Vivo Experimental Validation of the Precancerous Lesions Early Detection Possibility

open access: yesDiagnostics, 2023
This article is devoted to the experimental validation of the possibility of early detection of precancerous lesions in the oral mucosa in vivo using diffuse reflectance spectroscopy in the wavelength range from 360 to 1000 nm. During the study, a sample
Alexander V. Kolpakov   +10 more
doaj   +1 more source

Dual-Slope Diffuse Reflectance Instrument for Calibration-Free Broadband Spectroscopy

open access: yesApplied Sciences, 2021
This work presents the design and validation of an instrument for dual-slope broadband diffuse reflectance spectroscopy. This instrument affords calibration-free, continuous-wave measurements of broadband absorbance of optically diffusive media, which ...
Giles Blaney   +8 more
doaj   +1 more source

Near infrared reflectance spectroscopy compared with soil clay and organic matter content for estimating within-field variation in N uptake in cereals [PDF]

open access: yes, 2008
Adjusting fertiliser applications to within-field variations in nitrogen (N) mineralisation during the growing season can increase yields, improve crop quality, reduce costs and decrease nutrient losses to the environment. Predicting such variations at a
Stenberg, Bo   +2 more
core   +1 more source

EXPLORE THE CHARACTER OF SOIL SPECTRAL REFLECTANCE RELATE TO THE SOIL ORGANIC MATTER CONTENT

open access: yesJurnal Teknik Pertanian Lampung, 2019
The visible and near-infrared (Vis-NIR) diffuse reflectance spectroscopy has emerged as a rapid and low-cost tool for extensive investigation of soil properties.
Sari Virgawati   +5 more
doaj   +1 more source

Two Methods of Near Infrared Reflectance Spectroscopy for Determining the Digestibility and Energy Value of Feeds [PDF]

open access: yes, 1997
Two groups of rations with known in vivo digestibility and energy values were used in this study. These rations were composed of Italian ryegrass only (lRO. n = 45), and combination of Italian ryegrass and concentrates (lRC, n = 58).
Agung PURNOMOADI   +11 more
core   +1 more source

Characterizing “Chocolate” Flint Using Reflectance Spectroscopy

open access: yesArchaeologia Polona, 2018
The study details a pilot experiment in which samples of “chocolate’”flint from four procurement sites in Poland and chert from the United States were characterized spectrally and distinguished using reflectance spectroscopy and multivariate statistics ...
Ryan M. Parish, Dagmara H. Werra
doaj   +1 more source

Analysis of petroleum-contaminated soils by diffuse reflectance spectroscopy and sequential ultrasonic solvent extraction-gas chromatography [PDF]

open access: yes, 2014
In this study, we demonstrate that partial least-squares regression analysis with full cross-validation of spectral reflectance data estimates the amount of polycyclic aromatic hydrocarbons in petroleumcontaminated tropical rainforest soils.
Mouazen, Abdul Mounem   +2 more
core   +1 more source

MANGANESE(II) DETERMINATION BY DIFFUSE REFLECTANCE SPECTROSCOPY

open access: yesТонкие химические технологии, 2017
Results of testing a prototype light-emitting diod miniphotometer for rapid and sensitive elements determination both in laboratory and in field conditions are presented. The new photometer consists of two devices providing measurements of absorbance and
Ya. I. Simakina   +3 more
doaj   +1 more source

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