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Maria Helena Ferreira da Silva Florêncio

AuthID: R-000-BJV

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Confirmed Publications: 46

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TITLE: Electrospray ionization Fourier transform ion cyclotron resonance mass spectrometric and semi-empirical calculations study of five isoflavone aglycones Full Text
AUTHORS: Paulo J A Amorim Madeira ; Carlos M Borges ; Helena Florencio, MH ;
PUBLISHED: 2010, SOURCE: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, VOLUME: 24, ISSUE: 23

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12

TITLE: Electrospray ionization mass spectrometric analysis of newly synthesized alpha,beta-unsaturated gamma-lactones fused to sugars Full Text
AUTHORS: Paulo J A Amorim Madeira ; Ana Margarida Rosa; Nuno M Xavier ; Amelia P Rauter ; Helena H Florencio ;
PUBLISHED: 2010, SOURCE: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, VOLUME: 24, ISSUE: 7

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13

TITLE: Furanose C-C-linked gamma-lactones: a combined ESI FTICR MS and semi-empirical calculations study Full Text
AUTHORS: Paulo Amorim A Madeira ; Nuno M Xavier ; Amelia P Rauter ; Helena H Florencio ;
PUBLISHED: 2010, SOURCE: JOURNAL OF MASS SPECTROMETRY, VOLUME: 45, ISSUE: 10

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14

TITLE: Doped titanium dioxide nanocrystalline powders with high photocatalytic activity Full Text
AUTHORS: Castro, AL; Nunes, MR; Carvalho, MD ; Ferreira, LP ; Jumas, JC; Costa, FM; Florencio, MH ;
PUBLISHED: 2009, SOURCE: JOURNAL OF SOLID STATE CHEMISTRY, VOLUME: 182, ISSUE: 7

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15

TITLE: Electrospray ionization tandem mass spectrometry fragmentation of protonated flavone and flavonol aglycones: a re-examination Full Text
AUTHORS: Goncalo C Justino; Carlos M Borges ; Helena H Florencio ;
PUBLISHED: 2009, SOURCE: RAPID COMMUNICATIONS IN MASS SPECTROMETRY, VOLUME: 23, ISSUE: 2

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16

TITLE: Flavonoid - matrix cluster ions in MALDI mass spectrometry Full Text
AUTHORS: Paulo J A Amorim Madeira ; Helena H Florencio ;
PUBLISHED: 2009, SOURCE: JOURNAL OF MASS SPECTROMETRY, VOLUME: 44, ISSUE: 7

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17

TITLE: Plant extracts with anti-inflammatory properties-A new approach for characterization of their bioactive compounds and establishment of structure-antioxidant activity relationships Full Text
AUTHORS: Sonia Amaral; Lurdes Mira; Nogueira, JMF ; Alda Pereira da Silva; Helena H Florencio ;
PUBLISHED: 2009, SOURCE: BIOORGANIC & MEDICINAL CHEMISTRY, VOLUME: 17, ISSUE: 5

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18

TITLE: Rosmarinic acid, scutellarein 4 '-methyl ether 7-O-glucuronide and (16S)-coleon E are the main compounds responsible for the antiacetylcholinesterase and antioxidant activity in herbal tea of Plectranthus barbatus ("falso boldo") Full Text
AUTHORS: Pedro L Fale ; Carlos Borges ; Paulo J A Amorim Madeira ; Lia Ascensao; Maria Eduarda M Araujo ; Maria Helena Florencio ; Maria Luisa M Serralheiro ;
PUBLISHED: 2009, SOURCE: FOOD CHEMISTRY, VOLUME: 114, ISSUE: 3

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19

TITLE: Structure and antioxidant activity of brominated flavonols and flavanones Full Text
AUTHORS: Goncalo C Justino; Margarida Rodrigues; Helena H Florencio ; Lurdes Mira;
PUBLISHED: 2009, SOURCE: JOURNAL OF MASS SPECTROMETRY, VOLUME: 44, ISSUE: 10

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20

TITLE: Synthetic Approaches to Novel Thiosugar Scaffolds Containing alpha,beta-Unsaturated Carbonyl Groups Full Text
AUTHORS: Nuno M Xavier ; Paulo J A Madeira ; Helena H Florencio ; Amelia P Rauter ;
PUBLISHED: 2009, SOURCE: EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, VOLUME: 2009, ISSUE: 29

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