Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Carlos Magno R. Ribeiro"'
Publikováno v:
Química Nova, Vol 32, Iss 8, Pp 2234-2237 (2009)
This paper describes a simple experiment employing the essential oil of limes which can be applied in undergraduate organic chemistry laboratory classes for the teaching of thin layer chromatography (TLC). The experiment consists in submit lime peel
Externí odkaz:
https://doaj.org/article/16b790df2be4449a86065c74e3f693b1
Publikováno v:
Revista Iberoamericana de Educación, Vol 46, Iss 8, Pp 1-14 (2008)
Este trabalho descreve o uso de um esquema geométrico-numérico simples para ser aplicado em salas de aula por professores ao ensinar mistura de cores. A articulação deste esquema entre a Química e a Matemática pode ser realizado, facilitando a
Externí odkaz:
https://doaj.org/article/a259faa5ea714ad897b5c0525b36d719
Publikováno v:
Química Nova, Vol 31, Iss 4, Pp 735-739 (2008)
This study describes the use of three (-)-alpha-pinene derivatives, one diol-1,2 [(-)-(1R, 2R, 3S, 5R)-2,6,6-trimethylbicyclo[3.1.1]heptane-2,3-diol 4] and two piridine-hydroxy derivatives [(+)-(1R,2S,3R,5S)-2,6,6-trimethyl-3-(2-pyridinylmethyl)bicyc
Externí odkaz:
https://doaj.org/article/76a602bf7d1345c4bbdf17aeaab02eee
Autor:
Carlos Magno R. Ribeiro, Pablo P. de Souza, Letícia L. D. M. Ferreira, Lia A. Pinto, Leonardo S. de Almeida, Janaina G. de Jesus
Publikováno v:
Química Nova, Vol 31, Iss 4, Pp 759-762 (2008)
This work describes the cyclization of lapachol (1) induced by thallium triacetate (TTA) and thallium trinitrate (TTN) in several solvents using magnetic stirring and under microwave irradiation. alpha-Xyloidone (2) - dehydro-alpha-lapachone - was ob
Externí odkaz:
https://doaj.org/article/5b9a348b225144ccac36e33e6fb4f883
Publikováno v:
Química Nova, Vol 30, Iss 4, Pp 1026-1031 (2007)
This work describes a systematic method to be applied in undergraduate courses of organic chemistry, correlating infrared spectra, hydrogen and carbon-13 nuclear magnetic resonance, and mass spectra. To this end, a scheme and a table were developed t
Externí odkaz:
https://doaj.org/article/48f71a3ee8cf4168847c1004540f9cff
Autor:
Jordana T. Brito, Fabio Luiz Paranhos Costa, Rodolfo G. Fiorot, Ana Carolina Ferreira de Albuquerque, Alessandra L. Valverde, Lucas H. Martorano, Carlos Magno R. Ribeiro, José Walkimar de M. Carneiro, Fernando Martins dos Santos Junior
Publikováno v:
Magnetic Resonance in Chemistry. 60:434-441
Recently, structural elucidation of natural products has undergone a revolution. The combined use of different modern spectroscopic methods has allowed obtaining a complete structural assignment of natural products using small amounts of sample. Howe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a278da3b92ab7f2f936d918a202fd4ec
https://doi.org/10.1002/mrc.5230
https://doi.org/10.1002/mrc.5230
Autor:
Rafaelle Vinturelle, Alessandra L. Valverde, Thiago F Dos Santos, Evelize Folly, Carlos Magno R. Ribeiro, Daiana O S Nunes, Francislene J. Martins, Helena Carla Castro
Publikováno v:
Current Microbiology. 78:1846-1855
Bovine mastitis is an infectious disease that affects the mammary gland of dairy cattle with considerable economic losses. Staphylococcus aureus is the main microorganism involved in this highly contagious process, and the treatment is only using ant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ed4d6562a62cf0891f2201ac1bb7fb1
https://doi.org/10.1007/s00284-021-02344-9
https://doi.org/10.1007/s00284-021-02344-9
Autor:
Alessandra L. Valverde, Carlos Magno R. Ribeiro, Lucas H. Martorano, Fernando Martins dos Santos Junior, Jordana T. Brito, Ana Carolina Ferreira de Albuquerque, José Walkimar de M. Carneiro, Rodolfo G. Fiorot
Publikováno v:
Revista Virtual de Química. 13:1140-1146
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9eb640191b338e0e1518724195050364
https://doi.org/10.21577/1984-6835.20210059
https://doi.org/10.21577/1984-6835.20210059
Autor:
Lucas H. Martorano, José Walkimar de M. Carneiro, Alessandra L. Valverde, Carlos Magno R. Ribeiro, Fernando Martins dos Santos Junior, Rodolfo G. Fiorot, Ana Carolina Ferreira de Albuquerque
Publikováno v:
New Journal of Chemistry. 44:8055-8060
The skeleton of the helianane's family is an unsolved controversial topic. Recent synthetic studies and 13C NMR structural analysis have demanded for an amendment of helianane to the open ring curcudiol. However, some authors argue that the original
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44f90fc86d5c081f7822969fab980b11
https://doi.org/10.1039/d0nj01396j
https://doi.org/10.1039/d0nj01396j
Autor:
Ana Carolina Ferreira de Albuquerque, Rodolfo G. Fiorot, Lucas H. Martorano, Fernando Martins dos Santos Junior, Carlos Magno R. Ribeiro, Jordana T. Brito, Fabio Luiz Paranhos Costa, Alessandra L. Valverde, José Walkimar de M. Carneiro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19446b815ee440be59644fb4aae09850
https://doi.org/10.1002/mrc.5230/v2/response1
https://doi.org/10.1002/mrc.5230/v2/response1
