22 documents found, page 1 of 3
Turismo automóvel e mototurismo : análise comparativa entre eventos motorizados
Graça, AnaA crescente preocupação com a revitalização do setor turístico destaca a relevância da criação e gestão de novos produtos turísticos. Para compreender o objeto desta tese, foi adotada uma abordagem abrangente, começando por analisar o turismo enquanto sistema, explorando os destinos turísticos e a interseção entre turismo automóvel e mototurismo. Os objetivos da investigação contribuem para o preenchimento de l...
Numerical and experimental analysis of the anisotropy evolution in aluminium al...
Vincze, Gabriela; Lopes, Augusto; Butuc, Marilena C.; Yánez, Jesús; Lopes, Diogo; Holz, Laura; Graça, Ana; Pereira, António B.One of the most important characteristics of the sheet metal is its anisotropy. Asymmetric rolling (ASR) shows to be an adequate process to change the material anisotropy by increasing the normal anisotropy and decreasing the planar anisotropy. In this work, it is analysed the relationship between anisotropy and texture evolution using experimental and numerical approaches. Experimentally, the texture is modifi...
Exercícios de Anatomofisiologia: Recurso Pedagógico: UC Anatomofisiologia
Lopes, Inês; Graça, AnaNo âmbito da Unidade Curricular de Anatomofisiologia do 1º ano, 1º semestre do Curso de Licenciatura em Terapia da Fala, é elaborado o presente recurso pedagógico com o objetivo de suportar o processo de ensino/aprendizagem, desenvolvimento o conhecimento do Estudante, através de um conjunto de exercícios práticos que integram os diferentes conteúdos lecionados ao longo da Unidade Curricular.
A short review on the finite element method for asymmetric rolling processes
Graça, Ana; Vincze, GabrielaSeveral studies on asymmetric rolling processes use the Finite Element Method (FEM) to predict material deformation and optimize process parameters, such as rolls’ forces and torques. Early studies focused on the observation and measure of curvature effects due to the asymmetric conditions. However, these models could not predict mechanical behavior associated with the texture evolution during the rolling proce...
The effect of UV-C and electrolyzed water on yeasts on fresh-cut apple at 4 deg...
Graça, Ana; Santo, David; Pires-Cabral, Paula; Quintas, CéliaThe growth of a yeast mixture, Candida sake, Hanseniaspora uvarum, Pichia fermentans, Metschnikowia pulcherrima, on fresh-cut apple (Royal gala), at 4 degrees C, was studied, as well as the reduction of yeasts using Ultraviolet-C (UV-C), acidic (AEW) and neutral (NEW) electrolyzed waters, and sodium hypochlorite (SH). Apple portions were contaminated then disinfected with UV-C (2.5-10 kJ/m(2)), AEW, NEW and SH ...
Hygienic quality of dehydrated aromatic herbs marketed in Southern Portugal
Melo, Jessie; Quevedo, Chaiane; Graça, Ana; Quintas, CéliaDehydrated aromatic herbs are highly valued ingredients, widely used at home level and by food processing industry, frequently added to a great number of recipes in the Mediterranean countries. Despite being considered low-moisture products and classified as GRAS, during pre and post-harvesting stages of production they are susceptible of microbial contamination. In Europe an increasing number of food recalls a...
Saccharomyces cerevisiae as a model to confirm the ability of FTIR to evaluate ...
Magalhães, Sandra; Graça, Ana; Tavares, Joana; Santos, Manuel A. S.; Delgadillo, Ivonne; Nunes, AlexandraIt is known that the presence of protein aggregates in biological samples is associated with natural aging processes and age-related diseases. The objective of this technical study was to evaluate the potential of Fourier Transform Infrared Spectroscopy to identify the presence of protein aggregates in Saccharomyces cerevisiae containing high levels of protein aggregates. We acquired ATR-FTIR spectra at mid-inf...
Qualidade microbiologica de fruta minimamente processada
Graça, Ana; Nunes, Carla; Quintas, CéliaOs produtos minimamente processados (PMP), nomeadamente as frutas minimamente processadas (FMP), prontos a ingerir poderão ser uma boa alternativa para o consumo de fruta fresca fora de casa. A internacional Fresh-Cut Poduce Association (IFPA) define produtos minimamente processados (PMP) como frutas ou vegetais que sofreram alterações fisicas mas mantêm o seu estado fresco e as propriedades naturais dos alimen...
Growth of Escherichia coil, Salmonella enterica and Listeria spp., and their in...
Graça, Ana; Santo, David; Quintas, Célia; Nunes, CarlaThe present study aimed at evaluating the growth of Escherichia coil, Salmonella enterica, and Listeria spp. and studying the efficacy of Ultraviolet-C (UV-C) irradiation, acidic electrolyzed (AEW) and neutral electrolyzed (NEW) waters in the reduction of these bacteria on 'Rocha' pear. Fresh-cut pieces were inoculated and incubated at 4-20 degrees C for 8 days. Inoculated pears were treated with UV-C (2.5-10 k...
Microbiological quality and safety of minimally processed fruits in the marketp...
Graça, Ana; Esteves, E.; Nunes, Carla; Abadias, Maribel; Quintas, CéliaThe availability of fresh-cut fruit (FCF) in the marketplace has been increasing in Portugal, although reports of its microbial quality are not known. Due to the growing concerns of these commodities over their microbial safety, the objectives of this work were to study the microbiological quality and prevalence of Salmonella and Listeria monocytogenes on fresh-cut fruits sold in southern Portugal. A study to e...