A5050757090- Spectroscopy Techniques in Biomedical and Chemical Research
- Cultural Heritage Materials Analysis
- Spectroscopy and Chemometric Analyses
- Protein Interaction Studies and Fluorescence Analysis
- Spectroscopy and Quantum Chemical Studies
- Conservation Techniques and Studies
- Building materials and conservation
- Molecular spectroscopy and chirality
- Dyeing and Modifying Textile Fibers
- Terahertz technology and applications
- Spectroscopy and Laser Applications
- Bee Products Chemical Analysis
- Protein Structure and Dynamics
- Metabolomics and Mass Spectrometry Studies
- Laser-induced spectroscopy and plasma
- Toxin Mechanisms and Immunotoxins
- Advanced Chemical Sensor Technologies
- Analytical Chemistry and Chromatography
- Laser Material Processing Techniques
- Photoreceptor and optogenetics research
- Archaeological Research and Protection
- Hair Growth and Disorders
- Biochemical effects in animals
- Skin Protection and Aging
- Nonlinear Optical Materials Studies
Lomonosov Moscow State University
2015-2025
Moscow State University
2009-2023
State Research Institute for Restoration
2017-2019
International Laser Center
2012
A procedure is proposed to optimize a high-pass filter enabling one subtract the broadband background signals inherent in Raman spectra. spectral approach used analyze characteristics of and distortions processed Examples processing real spectra are presented.
ABSTRACT Raman spectra of human hair cuticle measured in two experimental configurations with linearly polarized radiation focused on the lateral surface and its cross section are compared. The bands at ~150, 220–230, 900, 935, 1321, 1338, 1652 cm −1 found to be polarization‐sensitive assigned skeletal vibrations α ‐helices keratins. However, different depending relative direction signal collection can obtained under identical polarization conditions for excitation. Several markers secondary...
Disulfide bridges of bovine α-thrombin are studied using the analysis Raman spectral features in interval 500–550 cm−1 . The changes under study caused by transitions from lyophilized state to native solution PBS wi
Samples of old paper are studied using ATR-FTIR and FT Raman spectroscopy. It is demonstrated that the methods laser spectroscopy make it possible to distinguish between foxing localization regions region homogeneous aging (yellowing). A significant bleaching an almost complete erasure stains can be reached irradiation.
The analysis of the structure-function relationship is extremely important in study proteins. importance function-related motions large parts or subglobules protein molecules stimulates spectroscopic low-frequency (terahertz) domain. However, only tentative assignments are available and data insufficiently discussed terms structural changes. This work aimed at regularities changes (100 to 600 cm−1) FTIR Raman spectra proteins related their modifications. We two with substantially different...
ABSTRACT Low‐frequency intervals that can be used to study the secondary structure of proteins are determined. Compared Raman spectra keratins from unpigmented human hair, measured in two experimental configurations: with excitation radiation coaxial hair and perpendicular it. Based on polarization sensitivity, bands peaked at 150 221 cm −1 assigned vibrations α‐helical structures. The comparison fragments different contents elements shows β‐structure manifested a spectral interval 270–340 ....
Fourier transform infrared (FTIR) and Raman spectra of proteins with significantly different structures are measured in a spectral interval 50 to 500 ?? cm ? 1 noticeable differences revealed. Intensities several bands correlate contents secondary structure elements. FTIR superhelical exhibit developed features that absent the globular proteins. Significant not directly related difference can be due tertiary and/or quaternary protein molecules.
Diagnostic methods and historical document artwork (in particular, paper items) analysis using modern physical is a topical practical problem. Paper materials exhibit nonuniform degradation with the formation of foxing stains. Correct physico-chemical identification structure foxed fragments depends on efficiency experimental technique offers guidelines for restoration. Raman spectroscopy makes it possible to characterize old samples; however, our knowledge, comprehensive has not been done....
Abstract The effect of laser radiation on a German geographic map printed in 1846 is investigated. sample irradiated with pulsed and continuous wave (cw) at wavelength 532 nm fluences 5 3 kJ/cm
The goal of this work is to investigate the porosity old paper with foxings. Initially, samples are characterized using conventional absorption and Fourier transform infrared spectroscopies. Optoacoustic method based on laser excitation short ultrasound transients used for measurements. calculated theory two-component mixture experimentally determined sound speeds in saturated liquids. An increase foxing stains comparison foxing-free fragments clearly demonstrated.
Abstract Confocal Raman microspectroscopy is used to substantially supplement existing experimental data on historical blue‐green beads with respect the presence and distribution of potassium antimony silicate (KSS) crystals. Problem degradation artifacts accounts for topicality work. The reasons possible short‐term (several years) neighboring damaged undamaged a single item remain unknown in spite multiple works various glasses. Presence KSS microcrystals may serve as reason beads....
Analysis of the IR spectra samples from 230 Russian oil paintings 20th century is used to propose a procedure for threshold estimation age based on measured parameters (intensity ratios spectral bands). The bands compounds that are formed upon interaction pigment (zinc white) with dating.