Results 11 to 20 of about 1,928,738 (354)

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   +1 more source

Raman Spectroscopy of Individual Cervical Exfoliated Cells in Premalignant and Malignant Lesions

open access: yesApplied Sciences, 2022
Cervical cancer is frequent neoplasia. Currently, the diagnostic approach includes cervical cytology, colposcopy, and histopathology studies; combining detection techniques increases the sensitivity and specificity of the tests.
Mariana Sarai Silva-López   +5 more
doaj   +1 more source

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

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

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.
R T, Dillon, R G, Dickinson
openaire   +2 more sources

A new Raman technique of superior spectral resolution [PDF]

open access: yes, 1982
Raman-active vibrational modes are coherently excited by the transient stimulated Raman process. A subsequent delayed probe of relatively long duration interacts with the freely relaxing vibrations.
Zinth, Wolfgang   +5 more
core   +1 more source

Raman Spectra and Strain Effects in Bismuth Oxychalcogenides [PDF]

open access: yesJournal of Physical Chemistry C, 2018
A new type of two-dimensional layered semiconductor with weak electrostatic but not van der Waals interlayer interactions, Bi2O2Se, has been recently synthesized, which shows excellent air stability and ultrahigh carrier mobility.
Ting Cheng   +5 more
semanticscholar   +1 more source

Carbonisation of biomass-derived chars and the thermal reduction of a graphene oxide sample studied using Raman spectroscopy [PDF]

open access: yes, 2013
Chars and carbonised chars were produced from three different oxygen-rich precursors (Pinus radiata wood, Phormium tenax leaf fibres, and sucrose crystals).
Pickering, Kim L.   +2 more
core   +1 more source

Infrared and Raman spectra of lignin substructures: Dibenzodioxocin

open access: yesJournal of Raman Spectroscopy, 2020
Vibrational spectroscopy is a very suitable tool for investigating the plant cell wall in situ with almost no sample preparation. The structural information of all different constituents is contained in a single spectrum. Interpretation therefore heavily
Peter Bock   +7 more
semanticscholar   +1 more source

Optimisation of wavelength modulated Raman spectroscopy : towards high throughput cell screening [PDF]

open access: yes, 2013
In the field of biomedicine, Raman spectroscopy is a powerful technique to discriminate between normal and cancerous cells. However the strong background signal from the sample and the instrumentation affects the efficiency of this discrimination ...
Andrew Riches   +17 more
core   +1 more source

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