Articles with "nir spectra" as a keyword



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Evaluation of two methods to eliminate the effect of water from soil vis–NIR spectra for predictions of organic carbon

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Published in 2017 at "Geoderma"

DOI: 10.1016/j.geoderma.2017.02.014

Abstract: Visible near infrared reflectance spectroscopy (vis–NIR) is an increasingly popular measurement method that can provide cheaper and faster predictions of soil properties, including soil organic carbon content (SOC). The spectroscopic prediction method relies significantly on… read more here.

Keywords: vis nir; two methods; organic carbon; soil ... See more keywords
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Laboratory simulations of the Vis-NIR spectra of comet 67P using sub-µm sized cosmochemical analogues

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Published in 2017 at "Icarus"

DOI: 10.1016/j.icarus.2017.10.015

Abstract: Abstract Laboratory spectral measurements of relevant analogue materials were performed in the framework of the Rosetta mission in order to explain the surface spectral properties of comet 67P. Fine powders of coal, iron sulphides, silicates… read more here.

Keywords: vis nir; spectra comet; comet 67p; simulations vis ... See more keywords
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Near-infrared spectroscopy enables quantitative evaluation of human cartilage biomechanical properties during arthroscopy.

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Published in 2019 at "Osteoarthritis and cartilage"

DOI: 10.1016/j.joca.2019.04.008

Abstract: OBJECTIVE To investigate the feasibility of near-infrared (NIR) spectroscopy (NIRS) for evaluation of human articular cartilage biomechanical properties during arthroscopy. DESIGN A novel arthroscopic NIRS probe designed in our research group was utilized by an… read more here.

Keywords: biomechanical properties; evaluation; cartilage biomechanical; spectroscopy ... See more keywords

NIR spectra simulation of thymol for better understanding of the spectra forming factors, phase and concentration effects and PLS regression features

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Published in 2018 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2018.08.011

Abstract: Abstract Near-infrared spectroscopy (NIRS) is an effective analytical/quality control tool in various appliances, i.e. in phytopharmaceutical industry. While multivariate analysis gives NIRS the desired level of analytical performance it lacks in providing deeper physical insights.… read more here.

Keywords: spectra forming; thymol; regression; forming factors ... See more keywords
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The near-infrared (NIR) spectra of powdered calcite in the 3–121 μm mode particle size range

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Published in 2017 at "Vibrational Spectroscopy"

DOI: 10.1016/j.vibspec.2017.03.006

Abstract: Abstract The near-infrared (NIR) spectra of powdered carbonate minerals is of significant multidisciplinary interest. However, there is a paucity of accounts of the behaviour of NIR bands as a function of particle size in well-constrained… read more here.

Keywords: particle size; mode particle; size; particle ... See more keywords
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Simulated NIR spectra as sensitive markers of the structure and interactions in nucleobases

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Published in 2019 at "Scientific Reports"

DOI: 10.1038/s41598-019-53827-6

Abstract: Near-infrared (near-IR; NIR) spectroscopy is continuously advancing in biophysical and biochemical fields of investigation. For instance, recent progresses in NIR hyperspectral imaging of biological systems may be noted. However, interpretation of NIR bands for biological… read more here.

Keywords: simulated nir; markers structure; sensitive markers; spectroscopy ... See more keywords
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Classification of Ciprofloxacin Tablets Using Near-Infrared Spectroscopy and Chemometric Modeling

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Published in 2017 at "Applied Spectroscopy"

DOI: 10.1177/0003702817699624

Abstract: Exposure to unknown, mislabeled, and counterfeit pharmaceutical products is a worldwide problem that presents a serious risk to public health. Near-infrared (NIR) spectroscopy can serve as a useful tool for screening pharmaceuticals in a rapid… read more here.

Keywords: tablets using; near infrared; ciprofloxacin tablets; spectroscopy ... See more keywords
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An efficient method to reduce grain angle influence on NIR spectra for predicting extractives content from heartwood stem cores of Toona. sinensis

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Published in 2020 at "Plant Methods"

DOI: 10.1186/s13007-020-00623-3

Abstract: A fast, reliable and non-destructive method is needed to qualify the extractives content (EC) in heartwood of T. sinensis cores in the breeding program for studying the genetic effect on EC. However, the influence of… read more here.

Keywords: sinensis; nir spectra; heartwood; influence ... See more keywords
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Quick assessment of chicken spoilage based on hyperspectral NIR spectra combined with partial least squares regression

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Published in 2021 at "International Journal of Agricultural and Biological Engineering"

DOI: 10.25165/ijabe.v14i1.5726

Abstract: Pseudomonas spp. and Enterobacteriaceae are dominant spoilage bacteria in chicken during cold storage (0°C-4°C). In this study, high resolution spectra in the range of 900-1700 nm were acquired and preprocessed using Savitzky-Golay convolution smoothing (SGCS),… read more here.

Keywords: chicken; least squares; partial least; spectra ... See more keywords
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Anharmonicity and Spectra–Structure Correlations in MIR and NIR Spectra of Crystalline Menadione (Vitamin K3)

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Published in 2021 at "Molecules"

DOI: 10.3390/molecules26226779

Abstract: Mid-infrared (MIR) and near-infrared (NIR) spectra of crystalline menadione (vitamin K3) were measured and analyzed with aid of quantum chemical calculations. The calculations were carried out using the harmonic approach for the periodic model of… read more here.

Keywords: spectra crystalline; menadione; crystalline menadione; structure ... See more keywords
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Preprocessing NIR Spectra for Aquaphotomics

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Published in 2022 at "Molecules"

DOI: 10.3390/molecules27206795

Abstract: Even though NIR spectroscopy is based on the Beer–Lambert law, which clearly relates the concentration of the absorbing elements with the absorbance, the measured spectra are subject to spurious signals, such as additive and multiplicative… read more here.

Keywords: spectra aquaphotomics; nir spectra; preprocessing nir; spectroscopy ... See more keywords