scholarly journals First candidates for γ vibrational bands built on the [505]11/2− neutron orbital in odd- A Dy isotopes

2020 ◽  
Vol 101 (4) ◽  
Author(s):  
S. N. T. Majola ◽  
M. A. Sithole ◽  
L. Mdletshe ◽  
D. Hartley ◽  
J. Timár ◽  
...  
Keyword(s):  
Neutron Orbital ◽  
Vibrational Bands

Effect of MWCNT doping on the structural and optical properties of PVC/PVDF polymer blend

2017 ◽  
Vol 13 (2) ◽  
pp. 4640-4647
Author(s):  
A. M. Abdelghany ◽  
M.S. Meikhail ◽  
S.I. Badr ◽  
A. S. Momen
Keyword(s):  
Surface Damage ◽  
X Ray Diffraction ◽  
Dopant Content ◽  
Casting Technique ◽  
Transmission Electron ◽  
Dopant Level ◽  
Before And After ◽  
Carbon Nano Tubes ◽  
Small Band ◽  
Vibrational Bands

Thin film samples of pristine polyvinyl chloride (PVC), poly vinyldine fluoride (PVDF) in combination with their blend in addition to samples containing factorial mass fraction of multi wall carbon nano-tubes (MWCNTs) in the dopant level were prepared via routine casting technique using tetrahydrofurane (THF) as a common solvent. X-ray diffraction and transmission electron microscopy (TEM) depict the nano-scale (15-25 nm) of functionalized MWCNTs with no surface damage results from functionalization process.X-ray diffraction (XRD) shows a semi-crystalline nature of PVDF with evidence for more than one phase namely a and b phases. The fraction of b phase was calculated and correlated to the dopant content. FTIR optical absorption spectra revels a preservation of the main vibrational bands before and after addition of MWCNTs in the doping level with a presence of new small band 1151 cm-1 assigned for the interaction and complexation between constituents.

scholarly journals Profiling of human burned bones: oxidising versus reducing conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. P. M. Marques ◽  
D. Gonçalves ◽  
A. P. Mamede ◽  
T. Coutinho ◽  
E. Cunha ◽  
...  
Keyword(s):  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Skeletal Remains ◽  
Anaerobic Conditions ◽  
Human Skeletal Remains ◽  
Human Bones ◽  
Reducing Conditions ◽  
Wide Range ◽  
Burned Bones ◽  
Vibrational Bands

AbstractComplementary optical and neutron-based vibrational spectroscopy techniques (Infrared, Raman and inelastic neutron scattering) were applied to the study of human bones (femur and humerus) burned simultaneously under either aerobic or anaerobic conditions, in a wide range of temperatures (400 to 1000 °C). This is the first INS study of human skeletal remains heated in an oxygen-deprived atmosphere. Clear differences were observed between both types of samples, namely the absence of hydroxyapatite’s OH vibrational bands in bone burned anaerobically (in unsealed containers), coupled to the presence of cyanamide (NCNH2) and portlandite (Ca(OH)2) in these reductive conditions. These results are expected to allow a better understanding of the heat effect on bone´s constituents in distinct environmental settings, thus contributing for an accurate characterisation of both forensic and archaeological human skeletal remains found in distinct scenarios regarding oxygen availability.

Dispersion of Complex Refractive Indices for Intense Vibrational Bands. I. Quantitative Spectra

2021 ◽  
Vol 125 (34) ◽  
pp. 9794-9803 ◽  
Author(s):  
Ryo Murata ◽  
Ken-ichi Inoue ◽  
Lin Wang ◽  
Shen Ye ◽  
Akihiro Morita
Keyword(s):  
Refractive Indices ◽  
Vibrational Bands

A Raman and infrared spectroscopic study of triethylenediamine (DABCO) and its protonated forms

1988 ◽  
Vol 66 (5) ◽  
pp. 1249-1257 ◽  
Author(s):  
David A. Guzonas ◽  
Donald E. Irish
Keyword(s):  
Raman Spectrum ◽  
Spectroscopic Study ◽  
Infrared Spectra ◽  
Infrared Spectroscopic Study ◽  
Protonated Forms ◽  
Infrared Spectroscopic ◽  
Vibrational Bands

The Raman and infrared spectra of DABCO have been measured as a function of the pH, and the vibrational bands of the two protonated forms of DABCO have been tabulated and assigned. The frequencies of several of the Raman bands were found to exhibit substantial shifts upon protonation, and the appearance of the Raman spectrum in the region between 900 and 1100 cm−1 in particular shows differences which can be used to differentiate between the three forms of DABCO. The values of the two pKa's were determined from the intensity versus pH plots for the three species.

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