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Development of a modified test cell for AC impedance testing of coated Al fins / A. Husain in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 3 (09/2007)
[article]
Titre : Development of a modified test cell for AC impedance testing of coated Al fins Type de document : texte imprimé Auteurs : A. Husain, Auteur ; O. Al-Shamali, Auteur ; P. S. Brahme, Auteur Année de publication : 2007 Article en page(s) : p. 317-325 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Spectroscopie d'impédance électrochimique Tags : 'Electrochemical impedance spectroscopy test cell' 'EIS conventional specimen holders' Coating 'Flat thin sheet specimen' Index. décimale : 667.9 Revêtements et enduits Résumé : An innovative test-cell arrangement is proposed and examined for electrochemical impedance spectroscopy (EIS) testing of coated thin sheet or foil samples. This arrangement uses a thin layer of medical cotton fabric as a medium containing and transporting 5% sodium chloride solution. This new EIS cell avoids the intervention of edge effect into EIS measurements of painted material. It also avoids the formation of crevice attack experienced at the edges of conventional sample holders or normally under the edge of the masking material. This arrangement is simple and flexible to suit different sizes and shapes of flat panel and foil samples. It can also be used effectively as specimen holders for other than thin sheets. The test cell is also suitable for any electrochemical tests other than impedance measurements. The accelerated results of the EIS present the viability of the EIS test cell to be used as an accelerated nondestructive, repetitive measurement of coated thin metal substrate. DOI : 10.1007/s11998-007-9043-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9043-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3647
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 4, N° 3 (09/2007) . - p. 317-325[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 008270 - Périodique Bibliothèque principale Documentaires Disponible Micelles activated planar chromatographic separation of hydrophilic vitamins / A. Mohammad in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 5/2009 (09-10/2009)
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Titre : Micelles activated planar chromatographic separation of hydrophilic vitamins Type de document : texte imprimé Auteurs : A. Mohammad, Auteur ; S. A. Bhawani, Auteur ; R. Gupta, Auteur Année de publication : 2009 Article en page(s) : p. 267-271 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chromatographie sur couches minces
Surfactants
VitaminesTags : Thin layer chromatography (TLC) Vitamins Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The separation efficiency of micellar solutions in thin layer chromatography of hydrophilic vitamins (B1, B9, B12 and C) has been examined using silica gel as stationary phase. The best results were obtained with mixed micelles (aqueous solution of anionic SDS (0.5%) plus non-ionic Triton X-100 (0.5%) surfactants) and butanol (9:1 v/v) as mobile phase. The proposed method is applicable to the identification and separation of vitamins (B1, B9 and C) present in drug samples (Becosule and Celin). The separation 1 µg of vitamin C from milligram quantities (up to 0.50 mg) of vitamin B1 has been successfully realized. Effect of metal ions as impurities on the separation of B1, B9 and vitamin C and limit of detection of these vitamins have been examined. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6239
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 5/2009 (09-10/2009) . - p. 267-271[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011608 - Périodique Bibliothèque principale Documentaires Disponible