Published in Journal of Applied Spectroscopy
Methods for determining the oxidant/antioxidant activity of free radicals, antioxidant compounds, and free-radical oxidation products in biological fluids are discussed. General approaches to the analysis of the antioxidant potential of complex natural objects using differential spectroscopy are presented.
Published in Journal of Applied Spectroscopy
With the COVID-19 outbreak, many challenges are posed before the scientific world to curb this pandemic. The diagnostic testing, treatment, and vaccine development for this infection caught the scientific community's immediate attention. Currently, despite the global proliferation of COVID-19 vaccination, the specific treatment for this disease is ...
Published in Journal of Applied Spectroscopy
Hepatitis infections represent a major health concern worldwide. Numerous computer-aided approaches have been devised for the early detection of hepatitis. In this study, we propose a method for the analysis and classification of cases of hepatitis-B virus ( HBV), hepatitis-C virus (HCV), and healthy subjects using Raman spectroscopy and a multisca...
Published in Journal of Applied Spectroscopy
This paper presents wetland aquatic vegetation remote sensing data using laboratory experiments on irises (Iris tectorum Maxim) and a simulation of the wetland aquatic vegetation growth environment. The spectral reflectance of the iris canopy under the background of different substrates was monitored. Experimental results show that under different ...
Published in Journal of Applied Spectroscopy
Plasmon-stimulated transformation (conversion) of radiation polarization by Au gratings with different ratios of excitation wavelength to lattice period (including high-frequency lattices with a wavelength to period ratio of close to 2 that are studied for the first time) and with different modulation depths are experimentally studied. Gratings for...
Published in Journal of Applied Spectroscopy
A method for monitoring dynamic changes of wound video sequence based on integral optical flow is proposed. In this method, frame-by-frame sequential analysis is performed first, and then integral optical flow and motion maps are constructed for the video sequence. Motion maps allow one to determine the rate of epithelialization of wounds in critic...
Published in Journal of Applied Spectroscopy
InSb thin films were grown on GaAs substrates by metal organic chemical vapor deposition (MOCVD) and investigated by temperature-dependent spectroscopic ellipsometry (TD-SE). The refractive index, extinction coefficient, and dielectric function of the InSb films were extracted. The variation of critical point energies (E1, E1+Δ1, E2, E1'\documentcl...
Published in Journal of Applied Spectroscopy
Lasing and spectroscopic properties of an LiY0.3Lu0.7F4:Pr3+ crystal grown by the Bridgman–Stockbarger method were investigated in detail. Absorption and luminescence spectra were recorded using polarized light. Lifetimes of excited states 3PJ were determined. Absorption and emission transition intensities were calculated according to f–f-transitio...
Published in Journal of Applied Spectroscopy
We developed an experimental technique of double stationary visible (l = 532 nm) and pulsed infrared (l = 10.6 μm) laser excitation of the electron-vibrational singlet and triplet states of eosin molecules in polyvinyl alcohol. After infrared excitation, delayed fluorescence (τdf ≈ 0.15 s) and thermoluminescence (τТL = 4.7 s) of eosin molecules in ...
Published in Journal of Applied Spectroscopy
A new method is proposed for solving the problem of separation of vibrational and rotational motions in a molecule, as well as a formula for the rotational energy levels. A kinetic energy operator in general form is used for arbitrary generalized coordinates. It is shown that for a triatomic nonlinear molecule, the motions are separated exactly. Th...
