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Chemical composition of the oil of rabdosia melissoides benth. / A. K. Singh in The journal of essential oil research, Vol. 17 N° 4 (Juillet-Août 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 4 (Juillet-Août 2005) . - pp. 444-445 Titre : Chemical composition of the oil of rabdosia melissoides benth. Type de document : texte imprimé Auteurs : A. K. Singh, Auteur ; A. A. Naqvi, Auteur Année de publication : 2006 Article en page(s) : pp. 444-445 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Rabdosia  melissoides  Labiatae  Essential  oil  composition  Thymol  p-cymene  Menthol Résumé : The essential oil of Rabdosia melissoides produced from plants harvested at their post-flowering stage was analyzed by GC and GC/MS. Thirty-three constituents comprising about 96% of the oil have been identified. Besides thymol (26.9%), p-cymene (16.5%) and carvacrol (6.8%) other major constituents identified were menthol (14.2%), piperitone (8.9%) and methyl thymol (6.3%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698957#.UeJeZGF2_n4 [article] Chemical composition of the oil of rabdosia melissoides benth. [texte imprimé] / A. K. Singh, Auteur ; A. A. Naqvi, Auteur . - 2006 . - pp. 444-445. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 4 (Juillet-Août 2005) . - pp. 444-445 Mots-clés : Rabdosia  melissoides  Labiatae  Essential  oil  composition  Thymol  p-cymene  Menthol Résumé : The essential oil of Rabdosia melissoides produced from plants harvested at their post-flowering stage was analyzed by GC and GC/MS. Thirty-three constituents comprising about 96% of the oil have been identified. Besides thymol (26.9%), p-cymene (16.5%) and carvacrol (6.8%) other major constituents identified were menthol (14.2%), piperitone (8.9%) and methyl thymol (6.3%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698957#.UeJeZGF2_n4

Modeling of convection and macrosegregation through appropriate consideration of multiphase/multiscale phenomena during alloy solidification / R. Pardeshi in Industrial & engineering chemistry research, Vol. 48 N° 19 (Octobre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 19 (Octobre 2009) . - pp. 8789–8804 Titre : Modeling of convection and macrosegregation through appropriate consideration of multiphase/multiscale phenomena during alloy solidification Type de document : texte imprimé Auteurs : R. Pardeshi, Auteur ; P. Dutta, Auteur ; A. K. Singh, Auteur Année de publication : 2009 Article en page(s) : pp. 8789–8804 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Solidification  processes  Multiphase  transport  phenomena  Physicochemical  phenomena Résumé : Solidification processes are complex in nature, involving multiple phases and several length scales. The properties of solidified products are dictated by the microstructure, the macrostructure, and various defects present in the casting. These, in turn, are governed by the multiphase transport phenomena occurring at different length scales. In order to control and improve the quality of cast products, it is important to have a thorough understanding of various physical and physicochemical phenomena occurring at various length scales, preferably through predictive models and controlled experiments. In this context, the modeling of transport phenomena during alloy solidification has evolved over the last few decades due to the complex multiscale nature of the problem. Despite this, a model accounting for all the important length scales directly is computationally prohibitive. Thus, in the past, single-phase continuum models have often been employed with respect to a single length scale to model solidification processing. However, continuous development in understanding the physics of solidification at various length scales on one hand and the phenomenal growth of computational power on the other have allowed researchers to use increasingly complex multiphase/multiscale models in recent times. These models have allowed greater understanding of the coupled micro/macro nature of the process and have made it possible to predict solute segregation and microstructure evolution at different length scales. In this paper, a brief overview of the current status of modeling of convection and macrosegregation in alloy solidification processing is presented. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900164f [article] Modeling of convection and macrosegregation through appropriate consideration of multiphase/multiscale phenomena during alloy solidification [texte imprimé] / R. Pardeshi, Auteur ; P. Dutta, Auteur ; A. K. Singh, Auteur . - 2009 . - pp. 8789–8804. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 19 (Octobre 2009) . - pp. 8789–8804 Mots-clés : Solidification  processes  Multiphase  transport  phenomena  Physicochemical  phenomena Résumé : Solidification processes are complex in nature, involving multiple phases and several length scales. The properties of solidified products are dictated by the microstructure, the macrostructure, and various defects present in the casting. These, in turn, are governed by the multiphase transport phenomena occurring at different length scales. In order to control and improve the quality of cast products, it is important to have a thorough understanding of various physical and physicochemical phenomena occurring at various length scales, preferably through predictive models and controlled experiments. In this context, the modeling of transport phenomena during alloy solidification has evolved over the last few decades due to the complex multiscale nature of the problem. Despite this, a model accounting for all the important length scales directly is computationally prohibitive. Thus, in the past, single-phase continuum models have often been employed with respect to a single length scale to model solidification processing. However, continuous development in understanding the physics of solidification at various length scales on one hand and the phenomenal growth of computational power on the other have allowed researchers to use increasingly complex multiphase/multiscale models in recent times. These models have allowed greater understanding of the coupled micro/macro nature of the process and have made it possible to predict solute segregation and microstructure evolution at different length scales. In this paper, a brief overview of the current status of modeling of convection and macrosegregation in alloy solidification processing is presented. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900164f

Terpenoid compositions and enantio-differentiation of linalool and sclareol in salvia sclarea L. from three different climatic regions in India / A. Yadav in The journal of essential oil research, Vol. 22 N° 6 (Novembre/Décembre 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 6 (Novembre/Décembre 2010) . - pp. 589-592 Titre : Terpenoid compositions and enantio-differentiation of linalool and sclareol in salvia sclarea L. from three different climatic regions in India Type de document : texte imprimé Auteurs : A. Yadav, Auteur ; C. S. Chanotiya, Auteur ; A. K. Singh, Auteur Année de publication : 2011 Article en page(s) : pp. 589-592 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Salvia  sclarea  Lamiaceae  Essential  oil  composition  Linalyl  acetate  Linalool  Enantiomeric  distribution Index. décimale : 646 Résumé : Salvia sclarea L. essential oil samples collected from three different climatic regions viz., Kashmir, Uttarakhand and Uttar Pradesh in India have been analyzed by capillary GC, enantio-GC and GC/MS. Linalool (23.6%), α-terpineol (3.8%), linalyl acetate (51.2%), β-caryophyllene (3.2%), germacrene D (1.3%) and sclareol (1.3%) were recorded in the oil S. sclarea cultivated in Lucknow UP while the Kashmir oil sample possessed the highest percentage of linalyl acetate (60.8%) and lowest linalool (14.5%) along with α-terpineol (1.8%), geranyl acetate (2.2%), β-caryophyllene (1.9%), germacrene D (2.6%) and sclareol (1.3%) as the other minor constituents. In contrast, the oil of S. sclarea from Purara in Uttarakhand showed highest percentage of linalool (29.8%), α-terpineol (5.3%) and sclareol (2.3%) and the lowest linalyl acetate (45.7%) among all the three samples. Further, high enantiomeric ratios ranged 76.8–79.5% for 3R-(-)-linalool and 78.8–99% for (-)-sclareol were determined on BETA DEX 110 capillary column. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700406 [article] Terpenoid compositions and enantio-differentiation of linalool and sclareol in salvia sclarea L. from three different climatic regions in India [texte imprimé] / A. Yadav, Auteur ; C. S. Chanotiya, Auteur ; A. K. Singh, Auteur . - 2011 . - pp. 589-592. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 6 (Novembre/Décembre 2010) . - pp. 589-592 Mots-clés : Salvia  sclarea  Lamiaceae  Essential  oil  composition  Linalyl  acetate  Linalool  Enantiomeric  distribution Index. décimale : 646 Résumé : Salvia sclarea L. essential oil samples collected from three different climatic regions viz., Kashmir, Uttarakhand and Uttar Pradesh in India have been analyzed by capillary GC, enantio-GC and GC/MS. Linalool (23.6%), α-terpineol (3.8%), linalyl acetate (51.2%), β-caryophyllene (3.2%), germacrene D (1.3%) and sclareol (1.3%) were recorded in the oil S. sclarea cultivated in Lucknow UP while the Kashmir oil sample possessed the highest percentage of linalyl acetate (60.8%) and lowest linalool (14.5%) along with α-terpineol (1.8%), geranyl acetate (2.2%), β-caryophyllene (1.9%), germacrene D (2.6%) and sclareol (1.3%) as the other minor constituents. In contrast, the oil of S. sclarea from Purara in Uttarakhand showed highest percentage of linalool (29.8%), α-terpineol (5.3%) and sclareol (2.3%) and the lowest linalyl acetate (45.7%) among all the three samples. Further, high enantiomeric ratios ranged 76.8–79.5% for 3R-(-)-linalool and 78.8–99% for (-)-sclareol were determined on BETA DEX 110 capillary column. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700406