A5080298039- Spectroscopy and Chemometric Analyses
- Spectroscopy Techniques in Biomedical and Chemical Research
- Bee Products Chemical Analysis
- Optical Imaging and Spectroscopy Techniques
- Dental materials and restorations
- Insect and Pesticide Research
- Dental Erosion and Treatment
- Advanced Chemical Sensor Technologies
- Phytochemicals and Antioxidant Activities
- Photoacoustic and Ultrasonic Imaging
- Essential Oils and Antimicrobial Activity
- Dental Research and COVID-19
- Color Science and Applications
- Water Quality Monitoring and Analysis
- Photodynamic Therapy Research Studies
- Dental Health and Care Utilization
- Cultural Heritage Materials Analysis
- Skin Protection and Aging
- Dyeing and Modifying Textile Fibers
- Food composition and properties
- Metabolomics and Mass Spectrometry Studies
- Gene expression and cancer classification
University of Belgrade
2012-2017
Vinča Institute of Nuclear Sciences
2014-2017
Front-face synchronous fluorescence spectroscopy combined with chemometrics is used to classify honey samples according their botanical origin. Synchronous spectra of three monofloral (linden, sunflower, and acacia), polyfloral (meadow mix), fake (fake acacia linden) types (109 samples) were collected in an excitation range 240–500 nm for wavelength intervals 30–300 nm. Chemometric analysis the gathered data included principal component partial least squares discriminant analysis. Mean...
Abstract Colour changes in Gradia Direct™ composite after immersion tea, coffee, red wine, Coca-Cola, Colgate mouthwash and distilled water were evaluated using principal component analysis (PCA) the CIELAB colour coordinates. The reflection spectra of composites used as input data for PCA. output (scores loadings) provided information about magnitude origin surface exposure to staining solutions. stained samples generally exhibited lower blue spectral range, which was manifested content...
In recent years, the potential of Fourier-transform infrared spectroscopy coupled with different chemometric tools in food analysis has been established. This technique is rapid, low cost, and reliable requires little sample preparation. this work, 130 Serbian unifloral honey samples (linden, acacia, sunflower types) were analyzed using attenuated total reflectance (ATR-IR). For each spectrum, 64 scans recorded wavenumbers between 4000 500 cm−1 at a spectral resolution 4 cm−1. These spectra...
Over the years various optical spectroscopic techniques have been widely used as diagnostic tools in discrimination of many types malignant diseases. Recently, synchronous fluorescent spectroscopy (SFS) coupled with chemometrics has applied cancer diagnostics. The SFS method involves simultaneous scanning both emission and excitation wavelengths while keeping interval (constant-wavelength mode) or frequencies (constant-energy between them constant. This is fast, relatively inexpensive,...
Abstract Objective The aim of this study was to evaluate changes color and fluorescence resin based composite exposed beer. Materials Methods 84 samples (13 mm in diameter 1.5 thick) microhybrid Gradia Direct TM extra bleach white were immersed 5 different beers (dark light) or distilled water. Color measured prior after 1‐, 7‐, 14‐day immersion by Spectrophotometer Thermo Evolution 600 Fluorolog‐3‐221 spectrofluorometer. Results Resin composites changed types. Beers with higher optical...
Novel optical spectroscopy and imaging methods may be valuable in the early detection of cancer. This paper reports differences luminescence responses pigmented skin lesions (melanomas nevi) apparently normal non-pigmented human skin, based on analyses synchronous measurements. Measurements were performed excitation range 330-545 nm, with intervals varying from 30-120 nm. Normal nevi, melanomas differ way they fluoresce, these are more distinct fluorescence spectra than conventional emission...
Abstract Fluorescence excitation-emission spectroscopy was used to investigate specimens of normal and malignant human breast tissues. Measurements were performed in two spectral regions: the excitation range from 335nm 400nm emission 430nm 625 nm, 470nm 500nm 640 nm. It found that fluorescence spectra are composed mainly emissions extracellular proteins differences intensity their reveal changes tissue structure morphology. These could be best observed excited with 370 425nm 455nm...
Background/Aim. Discoloration of dental restorations makes them aesthetically unacceptable and is a frequent reason for replacement composite restorations. The aim this study was to evaluate changes color fluorescence resin-based composites (RBCs) exposed natural juices energy drinks. Methods. Microhybrid Gradia DirectTM Extra Bleach White disc-shaped specimens (n = 35) were immersed in three different four Absorption spectra drinks, diffuse reflection samples measured prior after seven- day...