M
Maria D.M.C. Ribeiro da Silva
Researcher at University of Porto
Publications - 215
Citations - 3249
Maria D.M.C. Ribeiro da Silva is an academic researcher from University of Porto. The author has contributed to research in topics: Standard enthalpy of formation & Enthalpy of sublimation. The author has an hindex of 26, co-authored 212 publications receiving 2957 citations. Previous affiliations of Maria D.M.C. Ribeiro da Silva include University of Manchester & University of Aveiro.
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Journal ArticleDOI
Enthalpies of combustion of 1,2-dihydroxybenzene and of six alkylsubstituted 1,2-dihydroxybenzenes
TL;DR: The standard (po = 101.325 kPa) molar enthalpies of combustion in oxygen at 298.15 K were measured by microcalorimetry for 1,2-dihydroxybenzene (catechol) and six alkylsubstituted catechols.
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Prevalence and pattern of cognitive impairment in rural and urban populations from Northern Portugal
Belina Nunes,Ricardo Botelho Rodrigues da Silva,Vítor Tedim Cruz,José Mário Roriz,Joana Pais,Maria D.M.C. Ribeiro da Silva +5 more
TL;DR: The prevalence of cognitive impairment is higher in rural compared with urban populations, with the rural/urban prevalence ratio increasing with age, and the prevalence of dementia increases exponentially with age and in those with cerebrovascular disease or other comorbid conditions while the prevalence in persons with low levels of education or vascular risk factors is higher.
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Energetics of 6-methoxyquinoline and 6-methoxyquinoline N-oxide: the dissociation enthalpy of the (N–O) bond
Maria D.M.C. Ribeiro da Silva,Luís M. N. B. F. Santos,Ana L.R. Silva,Óscar O. P. Fernandes,William E. Acree +4 more
TL;DR: In this article, the standard (p o = 1 MPa ) molar enthalpies of formation, at T =29815 K, were determined using static-bomb calorimetry for crystalline 6-methoxyquinoline N -oxide (6MeOQUINO), as −(856±37) kJ · mol −1 and liquid 6-meOQUI, −(258±22)kJ ·mol −1
Journal ArticleDOI
Enthalpies of Formation of N-Substituted Pyrazoles and Imidazoles
Otilia Mó,Manuel Yáñez,María Victoria Roux,Pilar Jiménez,Juan Z. Dávalos,Manuel A.V. Ribeiro da Silva,Maria D.M.C. Ribeiro da Silva,M. Agostinha R. Matos,Luísa M.P.F. Amaral,Ana Sánchez-Migallón,Pilar Cabildo,Rosa M. Claramunt,José Elguero,Joel F. Liebman +13 more
TL;DR: In this article, the enthalpies of formation measured using static bomb combustion calorimetry, the “vacuum sublimation” drop-calorimetric method, and the Knudsen-effusion method are reported for the first time for four azoles: 1-methylimidazole (1MeIMI), 1-methylpyrazole(1MePYR), 1-(1-benzyl pyrazole) (1BnPYR).
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A thermodynamic investigation of the cellulose allomorphs: Cellulose(am), cellulose Iβ(cr), cellulose II(cr), and cellulose III(cr)
Robert N. Goldberg,Jacob Schliesser,Ashutosh Mittal,Stephen R. Decker,Ana Filipa L.O.M. Santos,Vera L.S. Freitas,Aaron Urbas,Brian E. Lang,Christian Heiss,Maria D.M.C. Ribeiro da Silva,Brian F. Woodfield,Rui Katahira,Wei Wang,David K. Johnson +13 more
TL;DR: In this paper, the thermodynamic properties of amorphous cellulose, cellulose I and cellulose II were studied by using oxygen bomb calorimetry, solution caloreimetry in which the solvent was cadoxen (a cadmium ethylenediamine solvent), and with a Physical Property Measurement System (PPMS) in zero magnetic field to measure standard massic heat capacities Cp,w∘ over the temperature range T = 2 to 302.