27 research outputs found
Restorative materials without Bis-GMA – myth or reality?
Abstract in proceedings of the Fourth International Congress of CiiEM: Health, Well-Being and Ageing in the 21st Century, held at Egas Moniz’ University Campus in Monte de Caparica, Almada, from 3–5 June 2019.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.info:eu-repo/semantics/publishedVersio
Translucency evaluation of an ultra-translucent monolithic zirconia and a super translucent multilayer zirconia : a pilot study on the thickness effect
Abstract in proceedings of the Fourth International Congress of CiiEM: Health, Well-Being and Ageing in the 21st Century, held at Egas Moniz’ University Campus in Monte de Caparica, Almada, from 3–5 June 2019.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.info:eu-repo/semantics/publishedVersio
Translucency of HT lithium disilicate specimens with different thicknesses : preliminary study
Abstract in proceedings of the Fourth International Congress of CiiEM: Health, Well-Being and Ageing in the 21st Century, held at Egas Moniz’ University Campus in Monte de Caparica, Almada, from 3–5 June 2019.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.info:eu-repo/semantics/publishedVersio
O efeito dos selantes de superfÃcie na estabilidade de cor das resinas compostas
Poster apresentado no XXXIV Congresso Anual da Sociedade Portuguesa de Estomatologia e Medicina Dentária (SPEMD), 9-11 Outubro 2014, Auditórios do Centro Hospitalar e Universitário de Coimbra.Under a Creative Commons license - http://creativecommons.org/licenses/by-nc-nd/3.0
Suscetibilidade dentária à pigmentação após branqueamento em ambulatório
Poster apresentado no XXXV Congresso Anual da Sociedade Portuguesa de Estomatologia e Medicina Dentária (SPEMD), 9-10 Outubro 2015, Centro de Congressos do Lagoas Park, Oeiras, Lisboa.Under a Creative Commons license - http://creativecommons.org/licenses/by-nc-nd/4.0
Avaliação da fluorescência de 2 resinas compostas após imersão em soluções pigmentantes
Poster apresentado no XXXV Congresso Anual da Sociedade Portuguesa de Estomatologia e Medicina Dentária (SPEMD), 9-10 Outubro 2015, Centro de Congressos do Lagoas Park, Oeiras, Lisboa.Under a Creative Commons license - http://creativecommons.org/licenses/by-nc-nd/4.0
Influência da clorexidina na resistência adesiva à dentina : duas estratégias adesivas
Poster apresentado no XXXVIII Congresso Anual da SPEMD, 12-13 Outubro 2018, OeirasN/
Translucidez de diferentes espessuras de zircónia : estudo preliminar
Poster apresentado no XXXVIII Congresso Anual da SPEMD, 12-13 Outubro 2018, OeirasN/
PLS-R calibration models for wine spirit volatile phenols prediction by Near-Infrared Spectroscopy
Near-infrared spectroscopic (NIR) technique was used, for the first time, to predict volatile
phenols content, namely guaiacol, 4-methyl-guaiacol, eugenol, syringol, 4-methyl-syringol and 4-
allyl-syringol, of aged wine spirits (AWS). This study aimed to develop calibration models for the
volatile phenol’s quantification in AWS, by NIR, faster and without sample preparation. Partial
least square regression (PLS-R) models were developed with NIR spectra in the near-IR region
(12,500–4000 cm−1
) and those obtained from GC-FID quantification after liquid-liquid extraction. In
the PLS-R developed method, cross-validation with 50% of the samples along a validation test set
with 50% of the remaining samples. The final calibration was performed with 100% of the data. PLS-R
models with a good accuracy were obtained for guaiacol (r2 = 96.34; RPD = 5.23), 4-methyl-guaiacol
(r2 = 96.1; RPD = 5.07), eugenol (r2 = 96.06; RPD = 5.04), syringol (r2 = 97.32; RPD = 6.11), 4-methylsyringol (r2 = 95.79; RPD = 4.88) and 4-allyl-syringol (r2 = 95.97; RPD = 4.98). These results reveal that
NIR is a valuable technique for the quality control of wine spirits and to predict the volatile phenols
content, which contributes to the sensory quality of the spirit beverages.info:eu-repo/semantics/publishedVersio