PURPOSE Recent studies have demonstrated increased nonenzymatic glycation in vitreous from patients with diabetic retinopathy. The present study reports the use of Raman spectroscopy as a novel approach for investigating these molecular changes in human vitreous and experimental tissues. METHODS Near-infrared laser-excited Fourier-transform (FT) Raman spectroscopy (RS) was performed on vitreo...

The FTIR and FT Raman spectra of 2,3dibromofuran have been recorded in the region 4000-400 cm -1 and 4000-100 cm -1 respectively. The optimized geometry, frequency and intensity of vibrational bands of 2,3-dibromofuran were obtained by Density Functional Theory (DFT) using 6-311++G(d,p) basis set. The harmonic vibrational frequencies were calculated and scaled values have been compared with exp...

14 During this study, Fourier transform infrared spectroscopy (FT-IR), near infrared 15 spectroscopy (NIR) and Raman spectroscopy were applied to 55 samples of counterfeit and 16 imitations of Viagra ® and 39 samples of counterfeit and imitations of Cialis ® . The aim of the 17 study was to investigate which of these techniques and associations of them were the best for 18 discriminating genuin...

PURPOSE To qualify the FT-Raman spectral data of primary and metastatic cutaneous melanoma in order to obtain a differential diagnosis. METHODS Ten normal human skin samples without any clinical or histopathological alterations, ten cutaneous melanoma fragments, and nine lymph node metastasis samples were used; 105, 140 and 126 spectra were obtained respectively. Each sample was divided into ...

This research studied the authentication of hazelnut oil by portable FT-NIR, FT-MIR, and Raman spectrometers. Hazelnut oils were adulterated with vegetable at various concentrations (0-25%) (w/w). Collected spectra analyzed using Principal Component Analysis (PCA) Soft Independent Modelling Class Analogy (SIMCA) to generate classification models authenticate pure Partial Least Squares Regressio...

Regional Centre of Advanced Technologie Olomouc, Czech Republic. E-mail: giorgio.zo [email protected] Department of Materials Science & Engine Ioannina, Greece Department of Biosciences (IBV), University † Electronic supplementary information additional XPS data, SEM and TEM mic FT-IR, Raman, UV-vis, uorescence spec additional cytotoxicity test on NIH3T3 ce (including input les). See DOI:...

The chemical bond and structural features for the most important classes of solid products obtained by reacting chalcogen donors with dihalogens and interhalogens are reviewed. Particular attention is paid to the information the FT-Raman spectroscopy can confidently give about each structural motif considered in the absence of X-ray structural analyses.

Site-selective deposition of aerosol Pd nanoparticles on a substrate was employed to fabricate nanoscale Ag dots and rings through a subsequent electroless deposition. The fabricated nanoscale dot and ring arrays respectively showed properties in surface-enhanced Raman (SER, with a 1.8 × 10(5) enhancement factor) and Fourier transform near infrared (FT-NIR, at 6153 cm(-1) absorption band) spectra.

Frankfurters are widely consumed all over the world, and the production requires a wide range of meat and non-meat ingredients. Due to these characteristics, frankfurters are products that can be easily adulterated with lower value meats, and the presence of undeclared species. Adulterations are often still difficult to detect, due the fact that the adulterant components are usually very simila...