27 documents found, page 1 of 3
Thermal comfort and sustainability in university classrooms: A study in mediter...
Romero, Pilar; Miranda, Teresa; Arranz, José; Valero, Victor; Isidoro, RuiThermal comfort in educational environments affects not only students’ wellbeing but also their concentration and academic performance. In the context of climate change, university classrooms in Mediterranean climates face particular challenges due to higher and more variable temperatures. This study evaluates thermal comfort in classrooms in southern Portugal, comparing natural ventilation (NV) and air-conditi...
Analysis of determining factors in the thermal comfort of university students. ...
Romero, Pilar; Valero-Amaro, Victor; Miranda, Teresa; Isidoro, RuiThe quality of the indoor thermal environment is essential because of its impact on the energy efficiency of buildings and on the health and well-being of those who occupy them. This is particularly important in educational buildings because of the direct impact on student performance. Various factors, such as natural ventilation, have become particularly relevant since COVID-19. Although this measure is no lon...
Cellulosic Textile Materials Functionalization with Formic Acid and Improvement...
Faria, Joana; Padrão, Jorge; Zille, Andrea; Miranda, TeresaFormic acid, commonly used in bioprocesses of cellulosic polymeric materials, has been considered for the treatment of cellulose-based textile. Therefore, different concentrations of formic acid (10, 20, 30, 40, and 50 g L-1) were used to treat cotton (CO) and viscose (CV) fabrics to improve their properties. Weight variation, tensile strength, stiffness, drape coefficient, crease recovery angle, and vertical w...
Modification of polyester properties through functionalization with PVA
Pinto, Sara; Miranda, Teresa; Kašparová, Marie; Wiener, JakubDue to the growing demand of the textile market, the production of synthetic fibers like polyester, which are produced from fossil fuels, has been increasing compared to any other existing fiber group. However, this type of fiber has its own disadvantages, the main one being its hydrophobic nature [1, 2]. To improve its properties, it was sought to develop a chemical functionalization. This process consisted of...
Exploring nanofibers and hydrogels as collagenase carriers for the development ...
Antunes, Jerome; Ribeiro, Artur; Lemos, Daniela; Miranda, Teresa; Santos, Jorge; Soares, Graça M. B.Collagenase acts by promoting wound debridement, contributing to the tissue repair process. Several studies pointed collagenase as a substance involved in the elimination of devitalized tissue or any contaminated material found in the wound bed after the appearance of a lesion or skin burn. In the present work hydroxypropyl methylcellulose/cyclodextrins hydrogels and polycaprolactone nanofibers with the ability...
Polyester-polyvinylalcohol hydrophilization strategies
Miranda, Teresa; Pinto, Cátia; Santos, Jorge Gomes; Soares, Graça M. B.Poly (ethylene terephthalate) (PET), also commonly called as polyester, is the most widely used polymer for the production of synthetic fibres over the past fifty years. The frequent use of this PET is due to its high mechanical strength combined with other properties such as the resistance to chemical products, stretching and abrasion. The fibre’s hydrophobicity also impacts the difficulty of cleaning these ma...
Nanofibers versus hydrogels as collagenase carrier
Antunes, Jerome; Ribeiro, Artur; Miranda, Teresa; Santos, Jorge; Soares, GraçaCollagenase acts by promoting wound debridement, contributing to the tissue repair process. Several studies pointed collagenase as a substance involved in the elimination of devitalized tissue or any contaminated material found in the wound bed after the appearance of a lesion or skin burn. In the present work, hydroxypropyl methylcellulose/cyclodextrins hydrogels and polycaprolactone nanofibers with the abilit...
Optimization of soil-release finishing processes of polyester fibers
Miranda, Teresa; Santos, Jorge Gomes; Soares, Graça M. B.[Excerpt] Introduction: Polyester fabrics are made from poly (ethylene terephthalate) (PET), currently accounting for more than 50% of all fibrous materials. Their properties includehigh uniformity, mechanical strength and resistance against chemicals and abrasion. However, PET fibers produce an accumulation of electrostatic charges that attract and retain dirt. This problem can be minimized by improving fiber ...
A comparative thermophysiological study in sport bras for running
Carneiro, Luciane; Miranda, Teresa; Catarino, André P.© Published under licence by IOP Publishing Ltd. Comfort in clothing is essential for user's performance and is considered as a quality factor when choosing a particular piece of garment. Sportswear's need include comfort and functionality, meaning that the thermo-physiological properties are of extreme importance. The aim of this work consists in comparing six different models of sports bra used specifically f...
Determination of the heat dissipation of sport bras using thermal manikin and t...
Catarino, André P.; Carneiro, Luciane; Miranda, Teresa; Abreu, Maria JoséActivity by practicing sport is one way of keeping shape and achieve general wellbeing, being recommended that every adult should do some physical activity every day [1]. There are a multitude of sports and probably the most popular is running, due not only to its simplicity but also to the economics factor. The thermal interaction of human body and the environment during running activity is an important mechan...