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51

Purple-Fleshed Sweet Potato acylated anthocyanins: equilibrium network and photophysical properties

Oliveira, Hélder, Basílio, Nuno, Pina, Fernando, Fernandes, Iva, de Freitas, Victor, Mateus, Nuno

Journal:

Year:

2019

Language:

english

File:

PDF, 1.33 MB

english, 2019

52

Contribuições da teoria marxista para a educação ambiental crítica

Loureiro, Carlos Frederico B., Trein, Eunice, Tozoni-Reis, Marília Freitas de Campos, Novicki, Victor

Journal:

Year:

2009

File:

PDF, 96 KB

2009

53

[IEEE 2019 23rd International Conference in Information Visualization – Part II - Adelaide, Australia (2019.7.16-2019.7.19)] 2019 23rd International Conference in Information Visualization – Part II - A Card-Based Interaction to Design Visualizations in Augmented Reality Environments

Victor Costa, Iuri, Favacho Queiroz, Vinicius, Pinto Miranda, Brunelli, Abreu de Freitas, Alexandre, Gustavo Resque dos Santos, Carlos, Serique Meiguins, Bianchi

Year:

2019

Language:

english

File:

PDF, 193 KB

english, 2019

54

Sub-hourly rainfall patterns by hyetograph type under distinct climate conditions in Northeast of Brazil: a comparative inference of their key properties

Barbosa, Luís Romero, Almeida, Cristiano das Neves, Coelho, Victor Hugo Rabelo, Freitas, Emerson da Silva, Galvão, Carlos de Oliveira, Araújo, José Carlos de

Journal:

Year:

2018

File:

PDF, 3.79 MB

2018

55

Study of the multi-equilibria of red wine colorants pyranoanthocyanins and evaluation of their potential in dye-sensitized solar cells

Pinto, Ana Lucia, Oliveira, Joana, Araújo, Paula, Calogero, Giuseppe, de Freitas, Victor, Pina, Fernando, Parola, A. Jorge, Lima, J. Carlos

Journal:

Year:

2019

Language:

english

File:

PDF, 1.60 MB

english, 2019

56

Genital Kaposi sarcoma in a HIV and syphilis co-infected patient: case presentation

Barroso dos Reis, Helena Lucia, de Carvalho Ferreira, Dennis, Tosato Boldrini, Neide Aparecida, Galvão, Carolina, Jacomele Caldas, João Victor, Santos Neves, Marize Freitas, Godefroy, Philippe

Journal:

BMC Infectious Diseases

Year:

2019

Language:

english

File:

PDF, 413 KB

english, 2019

57

Audiovisuais como temÃ¡tica de pesquisa em periÃ³dicos brasileiros de educaÃ§Ã£o em ciÃªncias

Freitas, Victor Menezes, De QueirÃ³s, Wellington Pereira, Lacerda, NÃlia Oliveira

Journal:

Caderno Brasileiro de Ensino de Física

Year:

2018

File:

PDF, 467 KB

2018

58

Dye-sensitized solar cells based on dimethylamino-Ï-bridge-pyranoanthocyanin dyes

Pinto, Ana Lucia, Cruz, Hugo, Oliveira, Joana, AraÃºjo, Paula, Cruz, Luis, Gomes, VÃ¢nia, Silva, Cassio P., Silva, Gustavo T.M., Mateus, Tiago, Calogero, Giuseppe, de Freitas, Victor, Quina, Frank H.,

Journal:

Year:

2020

File:

PDF, 6.19 MB

2020

59

[IEEE 2020 IEEE Applied Power Electronics Conference and Exposition (APEC) - New Orleans, LA, USA (2020.3.15-2020.3.19)] 2020 IEEE Applied Power Electronics Conference and Exposition (APEC) - SVPWM Techinque with Reduced Common Mode Voltage for Three-Phase Voltage Source Inverter

da Silva, Alexandre G. F., de Freitas, Isaac S., da Paz, Gilielson F., Oliveira, Lucas J., Ferreira, Vincius C., da Silva, Simplicio A., Melo, Victor F. M. B.

Year:

2020

File:

PDF, 1.96 MB

2020

60

Towards a Control-as-a-Service architecture for Smart Environments

Bezerra, Diego de Freitas, Medeiros, Victor Wanderley Costa de, GonÃ§alves, Glauco EstÃ¡cio

Journal:

Simulation Modelling Practice and Theory

Year:

2020

File:

PDF, 2.05 MB

2020

61

Photochemistry of 5-Hydroxy-4'-Dimethylaminoflavylium in the presence of SDS micelles. The role of metastable states of flavylium cation-quinoidal base and trans-chalcones

AraÃºjo, Paula, Mendoza, Johan, Pina, Fernando, Pereira, Ana Rita, Fernandes, Iva, de Freitas, Victor, Oliveira, Joana

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

2020

File:

PDF, 5.29 MB

2020

62

Determination of the Composition of Commercial Tannin Extracts by Liquid Secondary Ion Mass Spectrometry (LSIMS)

Vivas, Nicolas, Bourgeois, Guy, Vitry, Christiane, Glories, Yves, Freitas, Victor de

Journal:

Journal of the Science of Food and Agriculture

Year:

1996

Language:

english

File:

PDF, 783 KB

english, 1996

63

The influence of various phenolic compounds on scavenging activity assessed by an enzymatic method

de Gaulejac, Nathalie Saint-Cricq, Vivas, Nicolas, de Freitas, Victor, Bourgeois, Guy

Journal:

Journal of the Science of Food and Agriculture

Year:

1999

Language:

english

File:

PDF, 204 KB

english, 1999

64

Concentration and compositional changes of procyanidins in grape seeds and skin of whiteVitis vin�fera varieties

Freitas, Victor A?P De, Glories, Yves

Journal:

Journal of the Science of Food and Agriculture

Year:

1999

Language:

english

File:

PDF, 102 KB

english, 1999

65

Synthesis of a New Catechin-Pyrylium Derived Pigment.

Victor de Freitas, Carlos Sousa, Artur M. S. Silva, Celestino Santos-Buelga, Nuno Mateus

Journal:

Year:

2005

File:

PDF, 11 KB

2005

66

Effects of ultramorphological changes on adhesion to lased dentin—Scanning electron microscopy and transmission electron microscopy analysis

Simone G. Moretto, Nilton Azambuja Jr, Victor E. Arana-Chavez, Andre F. Reis, Marcelo Giannini, Carlos de P. Eduardo, Patricia M. De Freitas

Journal:

Microscopy Research and Technique

Year:

2011

Language:

english

File:

PDF, 593 KB

english, 2011

67

Nephelometric study of salivary protein–tannin aggregates

Victor de Freitas, Nuno Mateus

Journal:

Journal of the Science of Food and Agriculture

Year:

2002

Language:

english

File:

PDF, 136 KB

english, 2002

68

1,3-Dimethoxybenzene, a newly identified component of port wine

Frank S S Rogerson, Zelia Azevedo, Nélia Fortunato, Victor A P de Freitas

Journal:

Journal of the Science of Food and Agriculture

Year:

2002

Language:

english

File:

PDF, 139 KB

english, 2002

69

Development changes of anthocyanins in Vitis vinifera grapes grown in the Douro Valley and concentration in respective wines

Nuno Mateus, José M Machado, Víctor de Freitas

Journal:

Journal of the Science of Food and Agriculture

Year:

2002

Language:

english

File:

PDF, 130 KB

english, 2002

70

Application of flow nephelometry to the analysis of the influence of carbohydrates on protein–tannin interactions

Elisabete Carvalho, Maria João Póvoas, Nuno Mateus, Victor de Freitas

Journal:

Journal of the Science of Food and Agriculture

Year:

2006

Language:

english

File:

PDF, 168 KB

english, 2006

71

A colorimetric study of oenin copigmented by procyanidins

Bénédicte Berké, Victor de Freitas

Journal:

Journal of the Science of Food and Agriculture

Year:

2007

Language:

english

File:

PDF, 156 KB

english, 2007

72

Absorption of anthocyanins through intestinal epithelial cells – Putative involvement of GLUT2

Ana Faria, Diogo Pestana, Joana Azevedo, Fátima Martel, Victor de Freitas, Isabel Azevedo, Nuno Mateus, Conceição Calhau

Journal:

Molecular Nutrition & Food Research

Year:

2009

Language:

english

File:

PDF, 184 KB

english, 2009

73

A 3D structural and conformational study of procyanidin dimers in water and hydro-alcoholic media as viewed by NMR and molecular modeling

Isabelle Tarascou, Karine Barathieu, Cécile Simon, Marie-Agnès Ducasse, Yann André, Eric Fouquet, Erick J. Dufourc, Victor de Freitas, Michel Laguerre, Isabelle Pianet

Journal:

Magnetic Resonance in Chemistry

Year:

2006

Language:

english

File:

PDF, 523 KB

english, 2006

74

Anti-tumoral activity of imidazoquines, a new class of antimalarials derived from primaquine

Iva Fernandes, Nuno Vale, Victor de Freitas, Rui Moreira, Nuno Mateus, Paula Gomes

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

2009

Language:

english

File:

PDF, 295 KB

english, 2009

75

Isolation and structural characterization of new anthocyanin-alkyl-catechin pigments

João Pissarra, Sandra Lourenço, Ana M. González-Paramás, Nuno Mateus, C. Santos Buelga, Artur M.S. Silva, Victor De Freitas

Journal:

Year:

2005

Language:

english

File:

PDF, 224 KB

english, 2005

76

Influence of procyanidin structures on their ability to complex with oenin

Bénédicte Berké, Victor A.P. de Freitas

Journal:

Year:

2005

Language:

english

File:

PDF, 277 KB

english, 2005

77

The fate of flavanol–anthocyanin adducts in wines: Study of their putative reaction patterns in the presence of acetaldehyde

Frederico Nave, Natércia Teixeira, Nuno Mateus, Victor de Freitas

Journal:

Year:

2010

Language:

english

File:

PDF, 741 KB

english, 2010

78

Influence of the heterogeneity of grape phenolic maturity on wine composition and quality

Nikolaos Kontoudakis, Mireia Esteruelas, Francesca Fort, Joan Miquel Canals, Victor De Freitas, Fernando Zamora

Journal:

Year:

2011

Language:

english

File:

PDF, 237 KB

english, 2011

79

Influence of the tannin structure on the disruption effect of carbohydrates on protein–tannin aggregates

Nuno Mateus, Elisabete Carvalho, Catarina Luı́s, Victor de Freitas

Journal:

Analytica Chimica Acta

Year:

2004

Language:

english

File:

PDF, 130 KB

english, 2004

80

Formation of new anthocyanin-alkyl/aryl-flavanol pigments in model solutions

João Pissarra, Sandra Lourenço, Ana M González-Paramás, Nuno Mateus, C Santos-Buelga, Victor De Freitas

Journal:

Analytica Chimica Acta

Year:

2004

Language:

english

File:

PDF, 163 KB

english, 2004

81

Flow nephelometric analysis of protein–tannin interactions

Elisabete Carvalho, Nuno Mateus, Victor de Freitas

Journal:

Analytica Chimica Acta

Year:

2004

Language:

english

File:

PDF, 341 KB

english, 2004

82

Chromatic and structural features of blue anthocyanin-derived pigments present in Port wine

Joana Oliveira, Celestino Santos-Buelga, Artur M.S. Silva, Victor de Freitas, Nuno Mateus

Journal:

Analytica Chimica Acta

Year:

2006

Language:

english

File:

PDF, 444 KB

english, 2006

83

Fractionation of red wine polyphenols by solid-phase extraction and liquid chromatography

Baoshan Sun, M. Conceição Leandro, Victor de Freitas, M. Isabel Spranger

Journal:

Journal of Chromatography A

Year:

2006

Language:

english

File:

PDF, 490 KB

english, 2006

84

Isolation and quantification of oligomeric pyranoanthocyanin-flavanol pigments from red wines by combination of column chromatographic techniques

Jingren He, Celestino Santos-Buelga, Nuno Mateus, Victor de Freitas

Journal:

Journal of Chromatography A

Year:

2006

Language:

english

File:

PDF, 1.36 MB

english, 2006

85

Structural and chromatic characterization of a new Malvidin 3-glucoside–vanillyl–catechin pigment

Carlos Sousa, Nuno Mateus, Artur M.S. Silva, Ana M. González-Paramás, Celestino Santos-Buelga, Victor de Freitas

Journal:

Year:

2007

Language:

english

File:

PDF, 318 KB

english, 2007

86

Influence of anthocyanins and derivative pigments from blueberry (Vaccinium myrtillus) extracts on MPP+ intestinal uptake: A structure–activity approach

Ana Faria, Diogo Pestana, Rosário Monteiro, Joana Oliveira, Victor de Freitas, Isabel Azevedo, Conceição Calhau, Nuno Mateus

Journal:

Year:

2008

Language:

english

File:

PDF, 169 KB

english, 2008

87

Antioxidant properties of anthocyanidins, anthocyanidin-3-glucosides and respective portisins

Joana Azevedo, Iva Fernandes, Ana Faria, Joana Oliveira, Ana Fernandes, Victor de Freitas, Nuno Mateus

Journal:

Year:

2010

Language:

english

File:

PDF, 261 KB

english, 2010

88

Inhibition of α-amylase activity by condensed tannins

Rui Gonçalves, Nuno Mateus, Victor de Freitas

Journal:

Year:

2011

Language:

english

File:

PDF, 677 KB

english, 2011

89

Analysis of phenolic compounds in cork from Quercus suber L. by HPLC–DAD/ESI–MS

Ana Fernandes, André Sousa, Nuno Mateus, Miguel Cabral, Victor de Freitas

Journal:

Year:

2011

Language:

english

File:

PDF, 427 KB

english, 2011

90

Flavanol–anthocyanin pigments in corn: NMR characterisation and presence in different purple corn varieties

Susana González-Manzano, José J. Pérez-Alonso, Yolanda Salinas-Moreno, Nuno Mateus, Artur M.S. Silva, Victor de Freitas, Celestino Santos-Buelga

Journal:

Journal of Food Composition and Analysis

Year:

2008

Language:

english

File:

PDF, 180 KB

english, 2008

91

Nondestructive characterization of microstructures and determination of elastic properties in plain carbon steel using ultrasonic measurements

Vera Lúcia de Araújo Freitas, Victor Hugo C. de Albuquerque, Edgard de Macedo Silva, Antonio Almeida Silva, João Manuel R.S. Tavares

Journal:

Materials Science and Engineering: A

Year:

2010

Language:

english

File:

PDF, 743 KB

english, 2010

92

NMR structure characterization of a new vinylpyranoanthocyanin–catechin pigment (a portisin)

Nuno Mateus, Joana Oliveira, Celestino Santos-Buelga, Artur M.S. Silva, Victor de Freitas

Journal:

Tetrahedron Letters

Year:

2004

Language:

english

File:

PDF, 264 KB

english, 2004

93

Synthesis of a new catechin-pyrylium derived pigment

Victor de Freitas, Carlos Sousa, Artur M.S. Silva, Celestino Santos-Buelga, Nuno Mateus

Journal:

Tetrahedron Letters

Year:

2004

Language:

english

File:

PDF, 277 KB

english, 2004

94

A novel synthetic pathway to vitisin B compounds

Joana Oliveira, Victor de Freitas, Nuno Mateus

Journal:

Tetrahedron Letters

Year:

2009

Language:

english

File:

PDF, 765 KB

english, 2009

95

Synthesis of a new bluish pigment from the reaction of a methylpyranoanthocyanin with sinapaldehyde

Joana Oliveira, Nuno Mateus, Victor de Freitas

Journal:

Tetrahedron Letters

Year:

2011

Language:

english

File:

PDF, 1.10 MB

english, 2011

96

Synthesis of a new pyranoanthocyanin dimer linked through a methyl-methine bridge

Joana Oliveira, Nuno Mateus, José E. Rodriguez-borges, Eurico J. Cabrita, Artur M.S. Silva, Victor de Freitas

Journal:

Tetrahedron Letters

Year:

2011

Language:

english

File:

PDF, 419 KB

english, 2011

97

A computational study of vinylpyranoanthocyanin-phenolic pigments (portisins)

Alexandre R.F. Carvalho, Joana Oliveira, Victor de Freitas, Artur Silva, Nuno Mateus, André Melo

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

2010

Language:

english

File:

PDF, 896 KB

english, 2010

98

A theoretical interpretation of the color of two classes of pyranoanthocyanins

Alexandre R.F. Carvalho, Joana Oliveira, Victor de Freitas, Nuno Mateus, André Melo

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

2010

Language:

english

File:

PDF, 228 KB

english, 2010

99

Characterisation of oligomeric and polymeric procyanidins from grape seeds by liquid secondary ion mass spectrometry

Victor A.P.de Freitas, Yves Glories, Guy Bourgeois, Christiane Vitry

Journal:

Year:

1998

Language:

english

File:

PDF, 304 KB

english, 1998

100

Study of carbohydrate influence on protein–tannin aggregation by nephelometry

Victor de Freitas, Elisabete Carvalho, Nuno Mateus

Journal:

Year:

2003

Language:

english

File:

PDF, 180 KB

english, 2003