scholarly journals Two-Dimensional Micro-TLC Phenolic Fingerprints of SelectedMenthasp. on Cyano-Bonded Polar Stationary Phase

2015 ◽  
Vol 54 (1) ◽  
pp. 64-69 ◽  
Author(s):  
Mirosław A. Hawrył ◽  
Małgorzata A. Niemiec ◽  
Kamil Słomka ◽  
Monika Waksmundzka-Hajnos ◽  
Grażyna Szymczak
Keyword(s):  
Stationary Phase ◽  
Two Dimensional ◽  
Polar Stationary Phase

Correlation between thermodynamic parameters (GLC) and structure of esters

1981 ◽  
Vol 59 (15) ◽  
pp. 2243-2246 ◽  
Author(s):  
F. Saura Calixto ◽  
P. M. Deyá
Keyword(s):  
Molecular Structure ◽  
Stationary Phase ◽  
Thermodynamic Parameters ◽  
Homologous Series ◽  
Phase Gazeuse ◽  
Carboxylic Group ◽  
Phase Stationnaire ◽  
De Formula ◽  
Branching Chains ◽  
Polar Stationary Phase

The ΔHs and [Formula: see text] values of some one hundred esters belonging to twenty different homologous series are determined experimentally in the polar stationary phase (Carbowax 1540) by gas–liquid chromatography.Correlations between thermodynamic values and the molecular structure of esters are studied. The influence of the number of carbon atoms in the acid and alcohol chains and the position of the carboxylic group and branching chains on the ΔHs and [Formula: see text] values is considered.Faisant appel à la chromatographie en phase gazeuse impliquant du Carbowax 1540 comme phase stationnaire on a déterminé expérimentalement les valeurs de ΔHs et de [Formula: see text] d'une centaine d'esters appartenant à 20 séries homologues différentes.

Chromatographic and column stability at pH 7 of a C18 dimethylurea polar stationary phase

2004 ◽  
Vol 1030 (1-2) ◽  
pp. 157-166 ◽  
Author(s):  
César Ricardo Silva ◽  
Carol H Collins ◽  
Isabel Cristina Sales Fontes Jardim ◽  
Claudio Airoldi
Keyword(s):  
Stationary Phase ◽  
Polar Stationary Phase

Tsunami generation

1973 ◽  
Vol 59 (4) ◽  
pp. 817-828 ◽  
Author(s):  
R. D. Braddock ◽  
P. Van Den Driessche ◽  
G. W. Peady
Keyword(s):  
Stationary Phase ◽  
Wave Front ◽  
Integral Transform ◽  
Wave Train ◽  
Asymptotic Approximations ◽  
Two Dimensional ◽  
Tsunami Generation ◽  
One Dimensional ◽  
Series Representations ◽  
Surface Disturbances

The problems of tsunami generation are treated by standard integral-transform and modified stationary-phase methods to yield asymptotic approximations to the surface disturbances. The effects of asymmetry are considered in a one-dimensional ocean. Series representations are used to produce sets of normal-mode oscillations in a two-dimensional ocean, and the magnitudes of the wave front and wave train are discussed in relation to the asymmetry of the generating region.

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