“Rediscovering” the physical meaning of corrected retention volumes in GC

V. A. Davankov

doi:10.1007/bf02271065

The true physical meaning of the corrected retention volumes in GC

Chromatographia ◽

10.1007/bf02466395 ◽

1997 ◽

Vol 44 (5-6) ◽

pp. 279-282 ◽

Cited By ~ 19

Author(s):

V. A. Davankov

Keyword(s):

Physical Meaning ◽

Retention Volumes

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On the existence and physical meaning of the Zenneck wave

Uspekhi Fizicheskih Nauk ◽

10.3367/ufnr.0179.200907j.0801 ◽

2009 ◽

Vol 179 (7) ◽

pp. 801 ◽

Cited By ~ 9

Author(s):

Aleksandr V. Kukushkin

Keyword(s):

Physical Meaning

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Adsorption of Vapours of Some Organic Compounds on Surface of Iron-Substituted Layered Vanadyl Phosphate

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc20000047 ◽

2000 ◽

Vol 65 (1) ◽

pp. 47-57 ◽

Cited By ~ 1

Author(s):

Pavel Hradil ◽

Jiří Votinský ◽

Karel Komárek ◽

Vítězslav Zima ◽

Jaroslava Kalousová ◽

...

Keyword(s):

Organic Compounds ◽

Organic Molecules ◽

Ferric Ions ◽

Vanadyl Phosphate ◽

Enthalpy Of Adsorption ◽

Adsorbent Surface ◽

Specific Retention Volumes ◽

Specific Retention ◽

Retention Volumes ◽

Chromatographic Measurement

Gas chromatographic measurement of specific retention volumes of vapours of selected groups of organic compounds has been used to determine differential molar enthalpy of adsorption of their molecules on the surface of layered vanadyl phosphate substituted with ferric ions having the composition of [Fe(H2O)]0.20(VO)0.80PO4. Various types of bonds of the molecules to the surface of the layered adsorbent including their probable orientation with respect to the layers have been discussed. It was observed a dependence of the specific peak elution volume and shape of chromatographic peak on the sample size in the cases of those compounds whose molecules are chemically bound to the adsorbent surface. A connection is pointed out between the adsorption strength of the organic molecules on the layered adsorbent and the tendency of the system to undergo intercalation reaction.

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Seeking the Good Fitting Procedure of PALS Polymer Spectra

Materials Science Forum ◽

10.4028/www.scientific.net/msf.607.64 ◽

2008 ◽

Vol 607 ◽

pp. 64-66

Author(s):

Nicolas Laforest ◽

Jérémie De Baerdemaeker ◽

Corine Bas ◽

Charles Dauwe

Keyword(s):

Experimental Data ◽

Low Temperature ◽

Positron Annihilation ◽

Physical Meaning ◽

Lifetime Measurements ◽

Positron Annihilation Lifetime ◽

Fitting Procedure ◽

Fitting Procedures ◽

Blob Model

Positron annihilation lifetime measurements on polymethylmethacrylate (PMMA) at low temperature were performed. Different discrete fitting procedures have been used to analyze the experimental data. It shows that the extracted parameters depend strongly on the fitting procedure. The physical meaning of the results is discussed. The blob model seems to give the best annihilation parameters.

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Hamiltonian charges in the asymptotically de Sitter spacetimes

Journal of High Energy Physics ◽

10.1007/jhep05(2021)063 ◽

2021 ◽

Vol 2021 (5) ◽

Author(s):

Maciej Kolanowski ◽

Jerzy Lewandowski

Keyword(s):

Phase Space ◽

Initial Data ◽

Exact Solutions ◽

Gravitational Waves ◽

Physical Meaning ◽

De Sitter ◽

Killing Vectors ◽

Asymptotically Flat ◽

Angular Momenta ◽

The One

Abstract We generalize a notion of ‘conserved’ charges given by Wald and Zoupas to the asymptotically de Sitter spacetimes. Surprisingly, our construction is less ambiguous than the one encountered in the asymptotically flat context. An expansion around exact solutions possessing Killing vectors provides their physical meaning. In particular, we discuss a question of how to define energy and angular momenta of gravitational waves propagating on Kottler and Carter backgrounds. We show that obtained expressions have a correct limit as Λ → 0. We also comment on the relation between this approach and the one based on the canonical phase space of initial data at ℐ+.

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