Results 11 to 20 of about 307,616 (251)

Raman Spectra of Deuteroethylenes [PDF]

open access: yesNature, 1937
All the different ethylenes, have been prepared, their Raman spectra in the liquid state measured and classified. A comparison between experimental data and theoretical predictions permits an estimate of the order of magnitude of the anharmonicity.
M. De Hemptinne   +2 more
openaire   +3 more sources

Raman scattering spectra of amber [PDF]

open access: yesE3S Web of Conferences, 2020
The Raman spectra of amber (succinite) of different transparency levels of the Palmniken Deposit of Kaliningrad of Russia were obtained using the Fourier Transform–Raman spectroscopy method, which allows obtaining real and elemental compositions.
Verkhovskaia Iana, Prokopenko Viktor
doaj   +1 more source

RAMAN SPECTRA FROM ACETONE [PDF]

open access: yesProceedings of the National Academy of Sciences, 1929
Measurements of Raman spectra from acetone have been published in a recent paper [1]. These measurements were so interpreted that out of thirteen modified lines, twelve corresponded to frequencies of observed infra-red absorptions, the thirteenth lying outside the range of the infrared measurements.
Dillon, Robert T., Dickinson, Roscoe G.
openaire   +4 more sources

Classification of Various Marijuana Varieties by Raman Microscopy and Chemometrics

open access: yesToxics, 2022
The Raman analysis of marijuana is challenging because of the sample’s easy photo-degradation caused by the laser intensity. In this study, optimization of collection parameters and laser focusing on marijuana trichome heads allowed collecting Raman ...
Luis Ramos-Guerrero   +4 more
doaj   +1 more source

Use of Handheld Raman Spectroscopy for Intraoperative Differentiation of Normal Brain Tissue From Intracranial Neoplasms in Dogs

open access: yesFrontiers in Veterinary Science, 2022
The aim of this study was to assess feasibility and accuracy of a hand-held, intraoperative Raman spectroscopy device as a neuronavigation aid to accurately detect neoplastic tissue from adjacent normal gray and white matter.
Caitlin E. Doran   +3 more
doaj   +1 more source

Raman Spectroscopic Study of Five Typical Plasticizers Based on DFT and HF Theoretical Calculation

open access: yesFoods, 2023
Phthalic acid esters (PAEs) are the most commonly used plasticizers, and long-term or high levels of exposure to PAEs have a huge potential risk to human health.
Tong Sun   +3 more
doaj   +1 more source

Raman tweezers spectroscopy of live, single red and white blood cells. [PDF]

open access: yesPLoS ONE, 2010
An optical trap has been combined with a Raman spectrometer to make high-resolution measurements of Raman spectra of optically-immobilized, single, live red (RBC) and white blood cells (WBC) under physiological conditions.
Aseefhali Bankapur   +4 more
doaj   +1 more source

Isomorphic Substitution in Vanadinite [Pb5(VO4)3C1] - Raman Spectroscopic Study [PDF]

open access: yes, 2003
The Raman and infrared spectroscopy of three vanadinite [Pb5(VO4)Cl] specimens from three localities has been studied. Single crystal Raman spectra were obtained and the spectra were found to be both orientation and temperature dependent.
Adams   +20 more
core   +2 more sources

Rapid Discrimination of Clinically Important Pathogens Through Machine Learning Analysis of Surface Enhanced Raman Spectra

open access: yesFrontiers in Microbiology, 2022
With its low-cost, label-free and non-destructive features, Raman spectroscopy is becoming an attractive technique with high potential to discriminate the causative agent of bacterial infections and bacterial infections per se. However, it is challenging
Jia-Wei Tang   +10 more
doaj   +1 more source

Raman spectra of zinc phthalocyanine monolayers adsorbed on glassy carbon and gold electrodes by application of a confocal Raman microspectrometer [PDF]

open access: yes, 1992
Raman spectra of zinc phthalocyanine monolayers, adsorbed on gold and on glassy carbon surfaces (electrodes), are presented. These spectra have been recorded with the electrodes inside and outside an electrochemical cell filled with an aqueous ...
Feil, D.   +3 more
core   +4 more sources

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