Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Judith Felcman"'
Autor:
Jefferson Rocha de A. SILVA, Ana Claudia F. AMARAL, Antonio C. SIANI, Claudia M. REZENDE, Judith FELCMAN, Angelo C. PINTO
Publikováno v:
Acta Amazonica, Vol 33, Iss 1, Pp 105-110 (2003)
The polymeric material in the latex of Himatanthus sucuuba (Spruce) Woodson was identified by spectroscopic methods as cis-polyisoprene (Mn = 192; Mw = 571; Mw/ Mn = 2.97). ICP-MS analysis of microelements in the aqueous phase showed the most abundan
Externí odkaz:
https://doaj.org/article/02a4bf07b5294ac7b4dd8f1c374d6c8a
Publikováno v:
Journal of Molecular Structure. 1127:226-230
A large number of copper (II) complexes have been used as mimetic models for metalloproteins and metalloenzymes. Due to the lack of structural information about copper (II) complexes in aqueous solution, the coordination environment of this metal is
Autor:
Natalie Waissmann Szyfman, Ana Lucia Ramalho Mercê, Tatiana S. Ribeiro, Thaís Tenório, Judith Felcman
Publikováno v:
Journal of Molecular Structure. 1074:467-474
Binary and ternary systems of Zn 2+ complexes with phosphocreatine (PCr) and putrescine (Put) were investigated in aqueous solution using potentiometric titrations, Raman spectroscopy, Nuclear Magnetic Resonance ( 1 H NMR) and molecular modeling. The
Publikováno v:
Polyhedron. 54:34-38
The ternary complexes of Cu(II) with some dipeptides and methionine were studied both in aqueous solution and in solid state. The formation constants of copper(II) ternary complexes were calculated by potentiometric titration at 25 °C and μ = 0.1 m
Autor:
Letícia R. Teixeira, Heloisa Beraldo, Odivaldo C. Alves, Felipe S. Vilhena, Judith Felcman, Fabio S. Miranda
Publikováno v:
Journal of Solution Chemistry. 42:555-565
The binary systems of iron(II) and iron(III) with 2-pyridineformamide thiosemicarbazone (H2Am4DH) and its N(4)-methyl (H2Am4Me), N(4)-ethyl (H2Am4Et) and N(4)-phenyl (H2Am4Ph) derivatives were studied in aqueous solution by pH-potentiometry, ultravio
Autor:
Pedro A.L. Puppin, Judith Felcman, Vanessa M. Behring, Odivaldo C. Alves, L. D. Pinto, Nicolás A. Rey
Publikováno v:
Inorganica Chimica Acta. 386:60-67
Alzheimer’s disease is characterized by the loss of synapses and by the presence of extra-cellular amyloid β-peptide (Aβ) plaques, and it has been associated to copper metabolism. The plasma of patients with Alzheimer’s disease presents higher
Autor:
Maria de Nazaré Correia Soeiro, Judith Felcman, Denise da Gama Jaen Batista, Patrícia Bernardino da Silva, Sonia R.W. Louro, Luciene Stivanin, Letícia R. Teixeira, Renata S. Silva, Daniela R. Lachter
Publikováno v:
Polyhedron. 30:1718-1725
[MnCl2(NOR)(H2O)2] (1), [MnCl2(SPAR)(H2O)2] (2), [CoCl2(NOR)(H2O)2] (3) [CoCl2(SPAR)(H2O)2] (4), [CuCl2(phen)(NOR)] (5) and [CuCl2(phen)(SPAR)] (6) complexes with norfloxacin (NOR) and sparfloxacin (SPAR) were obtained from MnCl2·4H2O, CoCl2·4H2O a
Autor:
Ana Lucia Ramalho Mercê, Nicolás A. Rey, Pedro A.L. Puppin, Antonio S. Mangrich, L. D. Pinto, Judith Felcman, Deborah H. Flinker, Vanessa M. Behring
Publikováno v:
Inorganica Chimica Acta. 363:2624-2630
Four new ternary complexes of Cu(II) containing aspartic or glutamic acids and methionine or cysteine as ligands were studied both in solution and in solid state. The solution study was performed using potentiometry, UV–Vis spectroscopy, electron p
Autor:
Marta Sousa, Ana Lucia Ramalho Mercê, Otávio Versiani, Judith Felcman, Antonio S. Mangrich, Bárbara Lúcia de Almeida
Publikováno v:
Inorganica Chimica Acta. 362:2447-2451
Four new complexes of Cu(II) of stoichiometry [Cu(ATP)(polyamine)] containing as ligands the polyamines (PA) ethylenediamine, 1,3-diaminopropane, spermidine or spermine and adenosine 5′triphosphate were prepared from aqueous solution at pH 6. The s
Publikováno v:
Inorganica Chimica Acta. 362:346-350
Two new compounds of Cu(II) of stoichiometry CuCl4(polyamineH2) containing the polyamines (PA): spermidine or spermine were prepared. Their synthesis, spectroscopic and structural characterization are herein described. The obtained complex with sperm