Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Louis Lena"'
Publikováno v:
Akofena, Vol 02, Iss 10 (2023)
Résumé : Investir dans le secteur très influencé par les effets du changement climatique devient de plus en plus difficile pour la plupart de pays moins résilients à l’occurrence la République Démocratique du Congo. L’assurance en élevag
Externí odkaz:
https://doaj.org/article/a2deb106348a4a6991d34795987b4edd
Publikováno v:
Akofena, Iss S10 (2023)
Résumé : Les plantes aromatiques comme ressources locales, offrent de véritables atouts au développement à travers l’innovation rurale et la valorisation socioéconomique des savoirs faire locaux. Elles jouent un rôle de diversification écon
Externí odkaz:
https://doaj.org/article/16f06d05ee94415b9f64bf7c92bd7bc6
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 84:33-51
La decomposition thermique en phase liquide de l'hydroperoxy-2 methyl-2 propionate de t.butyle 1, dans une serie d'alcools secondaires et primaires a ete etudiee. Dans ces solvants, la decomposition est plus rapide que dans les solvants ne possedant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e106b04548ac51b7328ae30d548ac03
https://doi.org/10.1002/bscb.19750840104
https://doi.org/10.1002/bscb.19750840104
Publikováno v:
Fuel Science and Technology International. 9:337-353
Analytical studies have been performed on effluents issued from thermal conversion of Safaniya Vacuum residue (Arab Heavy) in presence of tetralin, thiophenol and methyldisulfide. In contrast to thermal behavior of the heavy oil alone, low coke amoun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ed7036e196537f356576e36fb0af5b5
https://doi.org/10.1080/08843759108942269
https://doi.org/10.1080/08843759108942269
Publikováno v:
Fuel. 70:132-135
A method has been developed for the identification of mercaptans in petroleum fractions by reaction with trialkyltin reagents. The derivatives formed have been characterized and quantified by 119 Sn n.m.r. spectrometry. Sulphides in petroleum fractio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7ee1f74ba89b5e3a4406832c45a2a1b
https://doi.org/10.1016/0016-2361(91)90109-n
https://doi.org/10.1016/0016-2361(91)90109-n
Publikováno v:
Tetrahedron Letters. 16:599-602
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e71985cc5073b50fa87b6c9300386a49
https://doi.org/10.1016/s0040-4039(00)71930-7
https://doi.org/10.1016/s0040-4039(00)71930-7
Publikováno v:
Analytical Chemistry. 57:2854-2858
The /sup 119/Sn NMR chemical shifts for tri-n-butyltin derivatives of 33 phenols commonly found in coal-derived liquids are reported. Analysis of coal-derived phenol fractions by this methods is comparatively straightforward and quantitative. Chemica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::072ea33ec9b617de1441349d0304c0a7
https://doi.org/10.1021/ac00291a024
https://doi.org/10.1021/ac00291a024
Publikováno v:
Analytical Chemistry. 54:688-691
The characterization of sulfur in asphalts is investigated by coupling selective reactions and photoelectron spectroscopy for chemical analysis. The specificity of the two following reactions has been studied on test compounds: oxidation of sulfides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53778345e72767cbd9d1131a4e13044e
https://doi.org/10.1021/ac00241a020
https://doi.org/10.1021/ac00241a020
Publikováno v:
Organic Magnetic Resonance. 15:401-403
33S NMR spectra have been obtained in the FT mode for some sulphones and sulphonic acids. The investigated compounds show narrow resonance lines. In the case of sulphones, the range of 33S chemical shifts is sufficiently wide, i.e. the effects due to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53b6a52b72323da7c8e59644df7bcc26
https://doi.org/10.1002/mrc.1270150416
https://doi.org/10.1002/mrc.1270150416
Publikováno v:
Fuel. 65:142-143
To study structural features of sulphur compounds in petroleum fractions, 33S spectra of selected sulphones were recorded and the range of chemical shifts as a function of their structure was determined. The first 33S spectra of preoxidized low boili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d3a5742a686c6d5854348564e0d5799
https://doi.org/10.1016/0016-2361(86)90157-2
https://doi.org/10.1016/0016-2361(86)90157-2