Influence of Non-fundamental Modes on Mid-infrared Spectra: Anharmonic DFT Study of Aliphatic Ethers

2017 ◽  
Vol 121 (7) ◽  
pp. 1412-1424 ◽  
Author(s):  
Krzysztof B. Beć ◽  
Justyna Grabska ◽  
Yukihiro Ozaki ◽  
Jerzy P. Hawranek ◽  
Christian W. Huck
Keyword(s):  
Infrared Spectra ◽  
Dft Study ◽  
Mid Infrared ◽  
Aliphatic Ethers

scholarly journals Creation of Lunar and Hermean analogue mineral powder samples for solar wind irradiation experiments and mid-infrared spectra analysis

Icarus ◽  
2021 ◽  
Vol 365 ◽  
pp. 114492
Author(s):  
Noah Jäggi ◽  
André Galli ◽  
Peter Wurz ◽  
Herbert Biber ◽  
Paul Stefan Szabo ◽  
...  
Keyword(s):  
Solar Wind ◽  
Infrared Spectra ◽  
Spectra Analysis ◽  
Mid Infrared ◽  
Powder Samples ◽  
Mineral Powder

Mid and near Infrared Study of Carbohydrates by Canonical Correlation Analysis

1993 ◽  
Vol 1 (2) ◽  
pp. 99-108 ◽  
Author(s):  
P. Robert ◽  
M.F. Devaux ◽  
A. Qannari ◽  
M. Safar
Keyword(s):  
Correlation Analysis ◽  
Infrared Spectra ◽  
Canonical Correlation ◽  
Near Infrared ◽  
Sugar Content ◽  
Infrared Region ◽  
Total Sugar ◽  
Mid Infrared ◽  
Total Sugar Content ◽  
Near Infrared Spectra

Multivariate data treatments were applied to mid and near infrared spectra of glucose, fructose and sucrose solutions in order to specify near infrared frequencies that characterise each carbohydrate. As a first step, the mid and near infrared regions were separately studied by performing Principal Component Analyses. While glucose, fructose and sucrose could be clearly identified on the similarity maps derived from the mid infrared spectra, only the total sugar content of the solutions was observed when using the near infrared region. Characteristic wavelengths of the total sugar content were found at 2118, 2270 and 2324 nm. In a second step, the mid and near infrared regions were jointly studied by a Canonical Correlation Analysis. As the assignments of frequencies are generally well known in the mid infrared region, it should be useful to study the relationships between the two infrared regions. Thus, the canonical patterns obtained from the near infrared spectra revealed wavelengths that characterised each carbohydrate. The OH and CH combination bands were observed at: 2088 and 2332 nm for glucose, 2134 and 2252 nm for fructose, 2058 and 2278 nm for sucrose. Although a precise assignment of the near infrared bands to chemical groups within the molecules was not possible, the present work showed that near infrared spectra of carbohydrates presented specific features.

Use of spherical projections in factor analysis of mid-infrared spectra of mixtures

1994 ◽  
Vol 31 (7) ◽  
pp. 205
Author(s):  
Stephen P. Gurden ◽  
Richard G. Brereton ◽  
John A. Groves
Keyword(s):  
Factor Analysis ◽  
Infrared Spectra ◽  
Mid Infrared

Mid-infrared spectra predict nuclear magnetic resonance spectra of soil carbon

Geoderma ◽  
2015 ◽  
Vol 247-248 ◽  
pp. 65-72 ◽  
Author(s):  
Mohsen Forouzangohar ◽  
Jeffrey A. Baldock ◽  
Ronald J. Smernik ◽  
Bruce Hawke ◽  
Lauren T. Bennett
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Soil Carbon ◽  
Infrared Spectra ◽  
Mid Infrared ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

scholarly journals Persistence of differences between dairy cows categorized as low or high methane emitters, as estimated from milk mid-infrared spectra and measured by GreenFeed

2019 ◽  
Vol 102 (12) ◽  
pp. 11751-11765 ◽  
Author(s):  
T.M. Denninger ◽  
F. Dohme-Meier ◽  
L. Eggerschwiler ◽  
A. Vanlierde ◽  
F. Grandl ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Infrared Spectra ◽  
Mid Infrared

scholarly journals The Mid-Infrared Spectra of Normal Galaxies

2000 ◽  
Vol 532 (1) ◽  
pp. L21-L24 ◽  
Author(s):  
G. Helou ◽  
Nanyao Y. Lu ◽  
M. W. Werner ◽  
S. Malhotra ◽  
N. Silbermann
Keyword(s):  
Infrared Spectra ◽  
Mid Infrared ◽  
Normal Galaxies
Sign in / Sign up

Export Citation Format

Share Document