Band Analysis of Temperature-Dependent Near-Infrared Spectra of Oleic Acid in the Pure Liquid State by the Analytic Geometric Approach

2003 ◽  
Vol 57 (12) ◽  
pp. 1539-1550 ◽  
Author(s):  
Katsue Koashi ◽  
Makio Iwahashi ◽  
Yukihiro Ozaki
Keyword(s):  
Oleic Acid ◽  
Infrared Spectra ◽  
Liquid State ◽  
Near Infrared ◽  
Geometric Approach ◽  
Pure Liquid ◽  
Temperature Dependent ◽  
Near Infrared Spectra

Effect of the chain length on near-infrared spectra of 1-alcohols from methanol to 1-decanol

NIR news ◽  
2019 ◽  
Vol 30 (3) ◽  
pp. 6-8
Author(s):  
Mirosław Antoni Czarnecki ◽  
Michał Kwaśniewicz
Keyword(s):  
Principal Component Analysis ◽  
Chain Length ◽  
Infrared Spectra ◽  
Near Infrared ◽  
Principal Component ◽  
Pure Liquid ◽  
Chemometric Methods ◽  
Near Infrared Spectra ◽  
Similarities And Differences ◽  
Self Association

This work shows the effect of the chain length on near-infrared spectra of 1-alcohols and is based on a recent paper by Kwaśniewicz and Czarnecki ( Appl Spectrosc 2018, 72: 288). Near-infrared spectra of 1-alcohols from methanol to 1-decanol in the pure liquid phase were recorded from 5200 to 9000 cm−1. The similarities and differences between the spectra were analyzed by the classical and chemometric methods (principal component analysis). The obtained results reveal that the near-infrared spectra of methanol, ethanol, and 1-propanol are appreciably different from the spectra of higher 1-alcohols. As shown, the degree of self-association of 1-alcohols decreases with the increase in the chain length.

Multilevel analysis of temperature dependent near-infrared spectra

Talanta ◽  
2015 ◽  
Vol 131 ◽  
pp. 170-174 ◽  
Author(s):  
Ruifeng Shan ◽  
Yue Zhao ◽  
Mengli Fan ◽  
Xiuwei Liu ◽  
Wensheng Cai ◽  
...  
Keyword(s):  
Multilevel Analysis ◽  
Infrared Spectra ◽  
Near Infrared ◽  
Temperature Dependent ◽  
Near Infrared Spectra

Water can be a probe for sensing glucose in aqueous solutions by temperature dependent near infrared spectra

2017 ◽  
Vol 957 ◽  
pp. 47-54 ◽  
Author(s):  
Xiaoyu Cui ◽  
Xiuwei Liu ◽  
Xiaoming Yu ◽  
Wensheng Cai ◽  
Xueguang Shao
Keyword(s):  
Aqueous Solutions ◽  
Infrared Spectra ◽  
Near Infrared ◽  
Temperature Dependent ◽  
Near Infrared Spectra

scholarly journals Near infrared spectra of O stars and related objects

1979 ◽  
Vol 83 ◽  
pp. 131-137
Author(s):  
J.M. Vreux ◽  
Y. Andrillat
Keyword(s):  
Infrared Spectra ◽  
Near Infrared ◽  
Favorable Condition ◽  
Temperature Dependent ◽  
Near Infrared Spectra ◽  
Theoretical Predictions

The λ 10124 He II line has been found to be a measurable emission in three stars. Our new data are compared to theoretical predictions. The λ 10830 He I line is observed in emission in 74% of the 05–08 supergiants but only seen in 29 % of the dwarfs, all of the latter exhibiting some “pecularities” i.e. classified as Oef, Oe, ON or On. An envelope with a sufficient amount of material seems to be a favorable condition to get the λ 10830 line in emission. However the mechanism leading to the observed emission is temperature dependent as well.

Glucose induced variation of water structure from temperature dependent near infrared spectra

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105729-105736 ◽  
Author(s):  
Xiaoyu Cui ◽  
Wensheng Cai ◽  
Xueguang Shao
Keyword(s):  
Aqueous Solutions ◽  
Infrared Spectra ◽  
Near Infrared ◽  
Water Structure ◽  
Temperature Dependent ◽  
Near Infrared Spectra ◽  
Induced Variation ◽  
Water Species

The different effects of glucose on water species provide evidence to explain the bioprotective function of carbohydrates in aqueous solutions.

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