33 documents found, page 1 of 4
Irreversible colorimetric bio-based curcumin bilayer membranes for smart food p...
Pereira, Ariane; Marques, Maria A.; Alves, Joaquim; Morais, Maria; Figueira, Joana; Pinto, Joana V.; Moreira, Felismina T. C.; Moreira, FelisminaResearch into innovative food safety technologies has led to the development of smart packaging with embedded chemical sensors that can monitor food quality throughout the supply chain. Thermochromic materials (TM), which are able to dynamically change colour in response to temperature fluctuations, have proven to be reliable indicators of food quality in certain environments. Natural colourants such as curcumi...
Irreversible temperature indicator based cellulose membranes conjugated with le...
Carvalho, Margarida; Tavares, Ana P. M.; Marques, Maria A.; Alves, Joaquim J.; Figueira, Joana; Morais, Maria; Pinto, Joana V.; Moreira, Felismina T. C.This research focuses on the development of thermochromic membranes made of cellulose acetate (CA) for temperature monitoring of sensitive food products. Two dual TC membranes developed for the control of different temperature ranges were formulated using a three-component system: a leuco-dye membrane (crystal violet lactone, CVL) integrated with an acidic membrane containing the color developer (salicylic acid...
Irreversible colorimetric bio-based curcumin bilayer membranes for smart food p...
Pereira, Ariane; Marques, Maria A.; Alves, Joaquim; Morais, Maria; Figueira, Joana; Pinto, Joana V.; Moreira, FelisminaResearch into innovative food safety technologies has led to the development of smart packaging with embedded chemical sensors that can monitor food quality throughout the supply chain. Thermochromic materials (TM), which are able to dynamically change colour in response to temperature fluctuations, have proven to be reliable indicators of food quality in certain environments. Natural colourants such as curcumi...
Large-Scale Study on how to Enhance Experimental Skills: VISIR + Project First ...
Lima, Natércia; Viegas, Clara; Marques, Maria A.; Alves, Gustavo R.Experimentation is crucial in science and engineering education, regardless the educational level. Nowadays, teachers have different ways of allowing students to develop these competences other than hands-on labs, such as simulations and remote labs. This study is focused on the combined use of the three resources, carried out by 51 teachers, in 25 different courses. In total, 40 didactical implementations in t...
VISIR+ project - Final Technical Report
Alves, Gustavo R.; Fidalgo, André V.; Marques, Maria A.; Viegas, Maria C.; Felgueiras, Manuel C.; Costa, Ricardo J.; Lima, Natércia; Castro, ManuelThis is the final technical report of the VISIR+ project.
Using a 3-tier Training Model for Effective Exchange of Good Practices in as ER...
Alves, Gustavo R.; Fidalgo, André; Marques, Maria A.; Viegas, Clara; Felgueiras, Carlos; Costa, Ricardo J.; Lima, Natércia; Kulesza, WlodekVISIR+ is an Erasmus+ project that aims to develop educational modules for electric and electronic circuits theory and practice following an enquiry-based teaching and learning methodology. The project has installed five new VISIR remote labs in Higher Education Institutions located in Argentina and Brazil, to allow students doing more experiments and hence acquire better experimental skills, through a combinat...
Relatório do Estado de Arte do VISIR
Alves, Gustavo R.; Fidalgo, André; Marques, Maria A.; Lima, Natércia; Castro, Manuel; García-Loro, FélixThis document is a brief overview of VISIR systems implementation as seen by the responsible persons on the institutions that use them. Its main purpose is to establish a base point for the development of a VISIR Federation. It was possible to establish that implementation, documentation and policies are considerably variant between institutions. Several issues must be analysed in further detail, namely the Cro...
The VISIR+ Project – Preliminary results of the training actions
Viegas, Clara; Alves, Gustavo R.; Marques, Maria A.; Lima, Natercia; Felgueiras, Carlos; Costa, Ricardo J.; Fidalgo, André Vaz; Pozzo, María I.Experimental competences allow engineering students to consolidate knowledge and skills. Remote labs are a powerful tool to aid students in those developments. The VISIR remote lab was considered the best remote lab in the world in 2015. The VISIR+ project main goal is to spread VISIR usage in Brazil and Argentina, providing technical and didactical sup- port. This paper presents an analysis of the already pros...
Adapting remote labs to learning scenarios: case studies using VISIR and RemotE...
Fidalgo, André Vaz; Alves, Gustavo R.; Marques, Maria A.; Viegas, C.; Costa-Lobo, Cristina; Henandez-Jayo, Unai; Garcia-Zúbia, JavierRemote laboratories are an emergent technological and pedagogical tool at all education levels, and their widespread use is an important part of their own improvement and evolution. This paper describes several issues encountered on laboratorial classes, on higher education courses, when using remote laboratories based on PXI systems, either using the VISIR system or an alternate in-house solution. Three main i...
How Remote Labs Impact on Course Outcomes: Various Practices Using VISIR
Marques, Maria A.; Viegas, Maria Clara; Costa-Lobo, Maria Cristina; Fidalgo, André Vaz; Alves, Gustavo R.; Rocha, Joao S.; Gustavsson, IngvarAs technology is increasingly being seen as a fa- cilitator to learning, open remote laboratories are increasingly available and in widespread use around the world. They provide some advantages over traditional hands-on labs or simulations. This paper presents the results of integrating the open remote laboratory VISIR into several courses, in various contexts and using various methodologies. These integrations...