Zobrazeno 1 - 10
of 23
pro vyhledávání: '"M. Tereza Fernandez"'
Autor:
Vitor Pinto, M. Filomena Duarte, Paula Rodrigues, M. Teresa Barros, G. John Langley, Benedito J. Costa Cabral, M. Tereza Fernandez, M. Lourdes Costa, Susana C. R. Marques, Narciso Couto
Publikováno v:
Rapid Communications in Mass Spectrometry. 31:1001-1013
RATIONALE The complexation behavior of transition metals with organic azides by electrospray ionization (ESI) tandem mass spectrometry (MS/MS) is not completely understood. In this study, fragmentation patterns of complex ions having azidoacetic acid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f747bdd49da6aa3819eb9475308401d8
https://doi.org/10.1002/rcm.7877
https://doi.org/10.1002/rcm.7877
Autor:
M. Filomena Duarte, Benedito J. Costa Cabral, Ana Assis, M. Tereza Fernandez, Paula Rodrigues, M. Lourdes Costa, M. Teresa Barros, Narciso Couto
Publikováno v:
Journal of Mass Spectrometry. 46:696-704
The relevance of metal interactions with azides has led us to the study of the complexation of some transition metals, nickel and cobalt, by azidoacetone by means of electrospray ionization mass spectrometry (ESI-MS). Complexes were obtained from sol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cab6457433531d0492bd12d9de1bcc1
https://doi.org/10.1002/jms.1940
https://doi.org/10.1002/jms.1940
Autor:
M. Filomena Duarte, Narciso Couto, Paula Rodrigues, Benedito J. Costa Cabral, M. Lourdes Costa, M. João Ramos, M. Teresa Barros, M. Tereza Fernandez
Publikováno v:
Rapid Communications in Mass Spectrometry. 22:582-590
The present work describes a study of the complexation of calcium and magnesium by 3-azidopropionitrile by means of electrospray ionization mass spectrometry (ESI-MS). Complexes were obtained from solutions of calcium and magnesium salts of the type
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::258910d9c328196473c7e9ffb61df9cc
https://doi.org/10.1002/rcm.3397
https://doi.org/10.1002/rcm.3397
Autor:
Paula Rodrigues, M. Filomena Duarte, M. Tereza Fernandez, Benedito J. Costa Cabral, M. Lourdes Costa, Narciso Couto, M. Teresa Barros
Publikováno v:
Journal of the American Society for Mass Spectrometry. 18:453-465
Most complexes of azides and transition metals involve the N(3)(-) azide anion as a ligand other than an organic azide. Complexes of organic azides with metals are involved in biological applications and in the deposition of nitrenes on metal surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4468ad822dc36d3c2b54cc954147ccc8
https://doi.org/10.1016/j.jasms.2006.10.018
https://doi.org/10.1016/j.jasms.2006.10.018
Publikováno v:
Rapid Communications in Mass Spectrometry. 20:2309-2316
Electron ionisation mass spectrometry studies were performed previously for p-diphenyl carbonate and some monosubstituted diphenyl carbonates. In this work, p-diphenyl carbonate and p-methoxyphenylphenyl carbonate are re-examined, and p-chlorophenyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27875156dc79422619d0dae8c8583c9b
https://doi.org/10.1002/rcm.2588
https://doi.org/10.1002/rcm.2588
Autor:
Filipa M. S. Martins, M. Lourdes Costa, G. John Langley, M. Filomena Duarte, M. Teresa Barros, M. Tereza Fernandez, Paula Rodrigues
Publikováno v:
Rapid Communications in Mass Spectrometry. 17:957-962
A series of derivatives of 2-azidoacetic acid and 2-azidoacetone were synthesized and their behaviour under electron ionization conditions was investigated. This paper reports the electron ionization fragmentation mechanisms for five aliphatic α-car
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0f90550e88a2df88fe73043be8ae970
https://doi.org/10.1002/rcm.1005
https://doi.org/10.1002/rcm.1005
Autor:
Andrew C. Gill, Keith R. Jennings, Lurdes Mira, M. Helena Florêncio, M. Tereza Fernandez, Manuela Silva
Publikováno v:
Journal of Inorganic Biochemistry. 71:93-98
Captopril, enalaprilat and lisinopril, angiotensin-converting enzyme (ACE) inhibitors, are effective HO • radical scavengers and seem to have some degree of metal binding capabilities. By metal chelation iron and copper may become inactive in radic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9cdbbc597319a27502e64df6e161854
https://doi.org/10.1016/s0162-0134(98)10037-5
https://doi.org/10.1016/s0162-0134(98)10037-5
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 94:1427-1430
Gas-phase basicity (GB) and proton affinity (PA) of limonene were derived from measurements of proton transfer equilibria carried out by high pressure pulsed electron beam source mass spectrometry. Experimental GB and PA are 842±5 kJ mol-1 and 875±
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45c29e70dc4631e9d91c206c46a09362
https://doi.org/10.1039/a800049b
https://doi.org/10.1039/a800049b
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :873-880
Gas phase proton transfer equilibria involving ortho-, meta- and para-isomers of tolualdehyde, fluorobenzaldehyde and chlorobenzaldehyde have been studied experimentally for the first time as a function of temperature. Proton affinities have been det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f324ef80ca0405f8213d21eaecf8ec35
https://doi.org/10.1039/a608287d
https://doi.org/10.1039/a608287d
Publikováno v:
Rapid Communications in Mass Spectrometry. 8:187-194
Cathodic ion sputtering energies have been studied in a glow-discharge ion source, operated in the ranges 0.5–2.0 Torr pressure and 100–1000 V discharge voltage using ion kinetic energy spectroscopy. Average energies in the range 10–20 eV were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dec93bff0882685ecbba3725ab1d08ff
https://doi.org/10.1002/rcm.1290080213
https://doi.org/10.1002/rcm.1290080213