Second derivative analysis of S=O stretching band in Raman spectra of dimethyl sulphoxide in carbon tetrachloride and water

1985 ◽  
Vol 95 (5-6) ◽  
Author(s):  
M. I. S. Sastry ◽  
Surjit Singh
Keyword(s):  
Carbon Tetrachloride ◽  
Raman Spectra ◽  
Dimethyl Sulphoxide ◽  
Second Derivative ◽  
Derivative Analysis

Application of Raman Spectroscopy to the Study of Adsorption Effects at Liquid-Solid Interfaces

1982 ◽  
Vol 36 (4) ◽  
pp. 471-473 ◽  
Author(s):  
Klaus Witke
Keyword(s):  
Raman Spectroscopy ◽  
Carbon Tetrachloride ◽  
Adsorption Isotherm ◽  
Minimal Surface ◽  
Linear Relationship ◽  
Surface Area ◽  
Long Range ◽  
Raman Spectra ◽  
Sample Cell ◽  
Minimal Surface Area

A sample cell for investigating suspensions or emulsions by Raman spectroscopy in the optically favorable 90° scattering arrangement is described. The Raman spectra of pyridine in a suspension of Aerosil 200 in carbon tetrachloride are recorded. The adsorption isotherm of pyridine is determined from the intensities of the Raman lines at 1008 and 990 cm−1. Over a long range of coverage a linear relationship exists between reciprocal concentrations of chemisorbed and dissolved molecules. The minimal surface area that is occupied by a chemisorbed molecule is determined to be approximately 0.75 nm2.

Dissolution of copper metal in a dimethyl sulphoxide–carbon tetrachloride mixture

1987 ◽  
pp. 1642-1643 ◽  
Author(s):  
Yasuyuki Tezuka ◽  
Masamitsu Miya ◽  
Akio Hashimoto ◽  
Kiyokazu Imai
Keyword(s):  
Carbon Tetrachloride ◽  
Dimethyl Sulphoxide ◽  
Copper Metal

scholarly journals Advanced analysis in epidemiological modeling: Detection of wave

2021 ◽  
Author(s):  
Abdon Atangana ◽  
Seda IGRET ARAZ
Keyword(s):  
Simple Model ◽  
Reproductive Number ◽  
Second Derivative ◽  
Mathematical Concepts ◽  
Epidemiological Modeling ◽  
Derivative Analysis ◽  
Second Derivatives ◽  
Advanced Analysis ◽  
The Stability ◽  
Derivatives Of

Some mathematical concepts have been used in the last decades to predict the behavior of spread of infectious diseases. Among them, the reproductive number concept has been used in several published papers for study the stability of the spread. Some conditions were suggested to predict there would be either stability or instability. An analysis was also suggested to determine conditions under which infectious classes will increase or die out. Some authors pointed out limitations of the reproductive number, as they presented its inability to fairly help understand the spread patterns. The concept of strength number and analysis of second derivatives of the mathematical models were suggested as additional tools to help detect waves. In this paper, we aim at applying these additional analyses in a simple model to predict the future. Keywords: Strength number, second derivative analysis, waves, piecewise modeling.

Effects of Dimethyl Sulphoxide Against Liver Injury Caused by Carbon Tetrachloride in Rats

2004 ◽  
Vol 14 (3) ◽  
pp. 167-176 ◽  
Author(s):  
Chun Kwan Wong ◽  
Vincent Eng Choon Ooi ◽  
Chong Kim Wong
Keyword(s):  
Carbon Tetrachloride ◽  
Liver Injury ◽  
Dimethyl Sulphoxide

The structures and vibrational spectra of methyl chloroformate and dimethyl carbonate

1966 ◽  
Vol 19 (9) ◽  
pp. 1637 ◽  
Author(s):  
B Collingwood ◽  
H Lee ◽  
JK Wilmshurst
Keyword(s):  
Carbon Tetrachloride ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Dimethyl Carbonate ◽  
Carbon Disulphide ◽  
Vapour Phase ◽  
Carboxylate Group ◽  
Infrared Band

The infrared spectra of methyl chloroformate and dimethyl carbonate in the vapour phase and as solutions in carbon disulphide and carbon tetrachloride have been obtained from 4000 to 400 cm-1 together with the Raman spectra of the liquids. The infrared band contours for both molecules are consistent with a cis configuration of the carboxylate group and the spectra may be interpreted satisfactorily on this basis.

TEMPORAL CHANGE OF RAMAN SPECTRA OF CARBON TETRACHLORIDE UNDER LASER-DRIVEN SHOCK COMPRESSION

2008 ◽  
Author(s):  
K. Wakabayashi ◽  
T. Matsumura ◽  
Y. Nakayama ◽  
E. Yamada ◽  
M. Koshi ◽  
...  
Keyword(s):  
Carbon Tetrachloride ◽  
Raman Spectra ◽  
Shock Compression ◽  
Temporal Change
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