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Chemical constituents of the essential oil from astragalus microcephalus willd. / M. B. Rezaee in The journal of essential oil research, Vol. 18 N° 1 (Janvier-Fevrier 2006) 

Public ISBD [article]  in The journal of essential oil research > Vol. 18 N° 1 (Janvier-Fevrier 2006) . - pp. 84-85 Titre : Chemical constituents of the essential oil from astragalus microcephalus willd. Type de document : texte imprimé Auteurs : M. B. Rezaee, Auteur ; K. Jaimand, Auteur ; M. Karimi, Auteur Année de publication : 2006 Article en page(s) : pp. 84-85 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Astragalus  microcephalus  Essential  oil  composition  Hexadecanoic  acid Résumé : The hydrodistilled oil from the aerial parts of Astragalus microcephalis Willd. was analyzed via a combination of GC and GC/MS. The major constituents were hexadecanoic acid (31.9%), heneicosane (9.1%), α-cadinene (7.7%), tridecanol (6.2%) and benzyl benzoate (6.2%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699392#.Ua8ChdgYrOk [article] Chemical constituents of the essential oil from astragalus microcephalus willd. [texte imprimé] / M. B. Rezaee, Auteur ; K. Jaimand, Auteur ; M. Karimi, Auteur . - 2006 . - pp. 84-85. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° 1 (Janvier-Fevrier 2006) . - pp. 84-85 Mots-clés : Astragalus  microcephalus  Essential  oil  composition  Hexadecanoic  acid Résumé : The hydrodistilled oil from the aerial parts of Astragalus microcephalis Willd. was analyzed via a combination of GC and GC/MS. The major constituents were hexadecanoic acid (31.9%), heneicosane (9.1%), α-cadinene (7.7%), tridecanol (6.2%) and benzyl benzoate (6.2%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699392#.Ua8ChdgYrOk

Structural properties of the poly(acrylonitrile) membrane prepared with different cast thicknesses / S. Azari in Industrial & engineering chemistry research, Vol. 49 N° 5 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2442–2448 Titre : Structural properties of the poly(acrylonitrile) membrane prepared with different cast thicknesses Type de document : texte imprimé Auteurs : S. Azari, Auteur ; M. Karimi, Auteur ; M. H. Kish, Auteur Année de publication : 2010 Article en page(s) : pp. 2442–2448 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Poly(acrylonitrile) Résumé : Decreasing the thickness of cast polymer solution in a membrane-forming system may lead to structure transition from finger- to spongelike structure. The shrinkage measurement of the cast poly(acrylonitrile) solutions reveals that the maximum value of shrinkage takes place when the macrovoids disappear from the structure. The solute rejection properties of membranes also show a different behavior between below and above the structure transition thickness. This experimental finding is explicable on the grounds of porosity variation of the membrane skin. The scanning electron micrograph of a cross-section membrane shows a nodular structure near the precipitation−bath interface, the structure of which is a result of spinodal demixing that is influenced by varying the thickness of the cast polymer solution. With the cast solution being regarded as two layers including a very thin top layer and a sublayer, closely packed spheres of polymer are considered for discussion of the thickness dependence of the structure evolution of the membranes. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900952v [article] Structural properties of the poly(acrylonitrile) membrane prepared with different cast thicknesses [texte imprimé] / S. Azari, Auteur ; M. Karimi, Auteur ; M. H. Kish, Auteur . - 2010 . - pp. 2442–2448. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2442–2448 Mots-clés : Poly(acrylonitrile) Résumé : Decreasing the thickness of cast polymer solution in a membrane-forming system may lead to structure transition from finger- to spongelike structure. The shrinkage measurement of the cast poly(acrylonitrile) solutions reveals that the maximum value of shrinkage takes place when the macrovoids disappear from the structure. The solute rejection properties of membranes also show a different behavior between below and above the structure transition thickness. This experimental finding is explicable on the grounds of porosity variation of the membrane skin. The scanning electron micrograph of a cross-section membrane shows a nodular structure near the precipitation−bath interface, the structure of which is a result of spinodal demixing that is influenced by varying the thickness of the cast polymer solution. With the cast solution being regarded as two layers including a very thin top layer and a sublayer, closely packed spheres of polymer are considered for discussion of the thickness dependence of the structure evolution of the membranes. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900952v