H
Helena I. S. Nogueira
Researcher at University of Coimbra
Publications - 205
Citations - 6247
Helena I. S. Nogueira is an academic researcher from University of Coimbra. The author has contributed to research in topics: Overweight & Raman spectroscopy. The author has an hindex of 38, co-authored 195 publications receiving 5048 citations. Previous affiliations of Helena I. S. Nogueira include University of Western Australia & University of Reading.
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Journal ArticleDOI
Raman Signal Enhancement Dependence on the Gel Strength of Ag/Hydrogels Used as SERS Substrates
TL;DR: In this paper, a series of hydrogel samples composed of Ag nanoparticles dispersed in carrageenan gels have been prepared and used in SERS studies, demonstrating the dependence of the enhancement of the SERS signal on the strength of the Ag/polysaccharide hydrogels.
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Association between parental perceptions of residential neighbourhood environments and childhood obesity in Porto, Portugal
Maria Ferrão,Augusta Gama,Augusta Gama,Vitor Rosado Marques,Larissa Loures Mendes,Isabel Mourão,Helena I. S. Nogueira,Gustavo Velasquez-Melendez,Cristina Padez +8 more
TL;DR: Parental perceptions of neighbourhood safety and the quality of local sidewalks are significantly associated with obesity values.
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Organic–inorganic hybrid materials based on iron(III)-polyoxotungstates and 1-butyl-3-methylimidazolium cations
Filipe M. Santos,Paula Brandão,Vítor Félix,M. Rosário M. Domingues,João S. Amaral,Vitor S. Amaral,Helena I. S. Nogueira,Ana M. V. Cavaleiro +7 more
TL;DR: The combination of the cationic part of ionic liquids and iron-substituted polyoxotungstates is predicted to lead to new materials with interest to catalysis, electrocatalysis and ionic liquid based nanocomposites.
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Gold loaded textile fibres as substrates for SERS detection
TL;DR: In this article, the authors present an overview of their own research on the development of malleable and easy-handled surface-enhanced Raman scattering (SERS) substrates based on textile fibres for analytical detection.
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Second and third row transition metal complexes of 1,1′-bi-2-naphthol and the X-ray crystal structures of (Bu4nN)[MoO2(acac)(BINO)] (1) and (Bu4nN)2(H2BINO)2[Mo2O7] (2)
TL;DR: The X-ray crystal structures of the title compounds 1 and 2 are described and the vibrational spectra of the complexes reported in this paper, and the properties of these compounds are discussed.