23 documents found, page 1 of 3
Biological Thermal Performance of Organic and Inorganic Aerogels as Patches for...
Ferreira-Gonçalves, Tânia; Iglesias-Mejuto, Ana; Linhares, Teresa; Coelho, João M. P.; Vieira, Pedro; Faísca, Pedro; Catarino, José; Ferreira, DavidAerogels are materials with unique properties, among which are low density and thermal conductivity. They are also known for their exquisite biocompatibility and biodegradability. All these features make them attractive for biomedical applications, such as their potential use in photothermal therapy (PTT). This technique is, yet, still associated with undesirable effects on surrounding tissues which emphasizes ...
Silica Aerogels/Xerogels Modified with Nitrogen-Containing Groups for Heavy Met...
Vareda, João P.; Valente, Artur J. M.; Durães, LuísaHeavy metals are common inorganic pollutants found in the environment that have to be removed from wastewaters and drinking waters. In this work, silica-derived aerogels and xerogels were modified via a co-precursor method to obtain functional adsorbents for metal cations. A total of six formulations based upon four different functional precursors were prepared. The materials' structural characterization reveal...
A study on the influence of prosthetic interface material in transtibial ampute...
Cavaco, Adriana; Durães, Luísa; Ramalho, Amílcar; Pais, SandraInterfaces of transtibial prosthesis have an important role in the transmission of ground reaction forces, damping gait loads and tissue protection.
Organically-modified silica aerogels: A density functional theory study
Maximiano, Pedro; Durães, Luísa; Simões, Pedro Nuno
Overview of Multiscale Molecular Modeling and Simulation of Silica Aerogels
Maximiano, Pedro; Durães, Luísa; Simões, Pedro
An equivalent self-adjusted heat capacity method for modelling heat diffusion p...
Soares, Nelson; Rosa, Nuno; Matias, Telma; Lopes, António Gameiro; Simões, Pedro Nuno; Durães, Luísa; Costa, José JoaquimThis work evaluates the thermal behaviour of a small aluminium-container-based thermal energy storage (TES) unit filled with a microencapsulated phase change material (PCM) – Micronal® DS 5001 X. ANSYS CFX® software is used for the 3D numerical simulations, which are based on the Effective Heat Capacity (EHC) method considering a purely diffusive transient model. In the formulation, a new artificial self-adjust...
Temperature regulation of polycrystalline silicon photovoltaic panels with mova...
Soares, Nelson; Gaspar, Adélio Rodrigues; Matias, Telma; Lopes, António Gameiro; Simões, Pedro Nuno; Durães, Luísa; Costa, José JoaquimThis paper presents an experimental study to evaluate the improvement of photovoltaic (PV) performance through temperature regulation of a commercial polycrystalline silicon PV panel, by placing a movable thermal energy storage (TES) unit filled with a free-form commercial paraffin-based PCM (RT22HC) on the panel's back. The outdoor apparatus is located in Coimbra, Portugal (40.19N, 8.42W). Three identical PV p...
Silica-based aerogels as adsorbents for phenol-derivative compounds
Matias, Telma; Marques, Joana; Quina, Margarida J.; Gando-Ferreira, Licínio; Valente, Artur J. M.; Portugal, António; Durães, Luísa
Poly(ethylene glycol)-block-poly(4-vinyl pyridine) as a versatile block copolym...
Rocha, Nuno; Mendes, Joana; Durães, Luísa; Maleki, Hajar; Portugal, António; Geraldes, C. F. G. C.; Serra, Arménio; Coelho, JorgeThis work reports an efficient method for the preparation of aqueous dispersions of superparamagnetic iron oxide nanoparticles (SPIONs), involving the use of an amphiphilic block copolymer, poly(ethylene glycol)- block-poly(4-vinyl pyridine) (mPEG-b-P4VP). The iron oxide nanoparticles are easily and efficiently dispersed due to the strong direct interaction of the hydrophobic P4VP segments, through complexation...
The effect of nanosilica addition on flowability, strength and transport proper...
Ghafari, Ehsan; Costa, Hugo; Júlio, Eduardo; Portugal, António; Durães, Luísa