A5053661559- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Acoustic Wave Resonator Technologies
- Bone Tissue Engineering Materials
- Multiferroics and related materials
- Advanced oxidation water treatment
- ZnO doping and properties
- Pharmaceutical and Antibiotic Environmental Impacts
- Electronic and Structural Properties of Oxides
- Advanced Photocatalysis Techniques
- Gas Sensing Nanomaterials and Sensors
- Environmental remediation with nanomaterials
- Calcium Carbonate Crystallization and Inhibition
- Adsorption and biosorption for pollutant removal
- biodegradable polymer synthesis and properties
- Nanomaterials for catalytic reactions
- Membrane Separation Technologies
- Copper-based nanomaterials and applications
- Nanoparticles: synthesis and applications
- Wastewater Treatment and Reuse
- X-ray Diffraction in Crystallography
- Analytical chemistry methods development
- Dielectric properties of ceramics
- Thin-Film Transistor Technologies
- Dental Implant Techniques and Outcomes
Centro Hospitalar de Vila Nova de Gaia
2025
University of Aveiro
2015-2024
Polytechnic Institute of Porto
2024
Universidad Del Este
2024
Universidade Estadual do Piau
2024
Weatherford College
2023
Hospital Braga
2020
University of Sheffield
2013
Oregon National Primate Research Center
2009
Institute for Systems Engineering and Computers
1993-1995
Application of engineered nanomaterials for the treatment industrial effluents and to deal with recalcitrant pollutants has been noticeably promoted in recent years. Laboratory, pilot full-scale studies emphasize potential this technology offer promising options meet future needs clean water resources comply stringent environmental regulations. The is now stage being transferred real applications. Therefore, assessment its performance according sustainability criteria their incorporation...
Peracetic acid (PAA)-based advanced oxidation processes (AOPs) are promising technologies for the efficient treatment of persistent contaminants in wastewater. In this study, three different magnetic biochar (BC)-ferrospinel AFe2O4 (A = Cu, Co, or Mn) nanocomposites were synthesized through a combined sol–gel/pyrolysis process activation PAA to degrade carbamazepine (CBZ). The following order efficiency was observed CBZ degradation presence PAA: BC-CoFe2O4 (100 %) > BC-MnFe2O4 (7 ≈...
The relationship between charge transport, defects and ferroelectric response is established for K0.5Na0.5NbO3 (KNN) Mn-doped KNN ceramics. At room temperature the conduction in associated with hole transport can be suppressed by Mn doping. Because of that a less leaky hysteresis loop obtained KNN. high temperatures dominated motion ionized oxygen vacancies, concentration which increases This work adds relevant information on leverages its potential application.
Zinc Oxide Nanoparticles (ZnO NPs) are a type of metal oxide nanoparticle with an extensive use in biomedicine. Several studies have focused on the biosafety ZnO NPs, since their size and surface area favor entrance accumulation body, which can induce toxic effects. In previous studies, NPs been identified as dose- time-dependent cytotoxic inducer testis male germ cells. However, consequences for first cell stage spermatogenesis, spermatogonia, never evaluated. Therefore, aim present work is...
Fe and N co-doped walnut shell biochar (Fe,N-BC) was prepared through a one-pot pyrolysis procedure by using shells as feedstocks, melamine the source, iron(III) chloride source. Moreover, pristine (BC), nitrogen-doped (N-BC), α-Fe2O3-BC were synthesized controls. All materials characterized different techniques used for activation of peroxymonosulfate (PMS) degradation sulfamethoxazole (SMX). A very high rate SMX (10 mg/L) achieved with Fe,N-BC/PMS (0.5 min-1), which higher than those...
Impedance spectroscopy (IS) is used to compare defects and charge transport in (001) oriented K0.5Na0.5NbO3 (KNN) single crystals its polycrystalline counterpart. KNN show lower conductivity than counterpart from room temperature up 200 °C, but above this displays conductivity. The low (T < °C) behavior reflects the different processing conditions of ceramics crystals, which account for less prone case crystals. As increases > become more conductive samples grain boundaries act as barriers...
In the present manuscript, novel effluent treatment processes for pulp and paper mill effluents are divided into two categories: a) those involving use of chemical additives b) which free such chemicals. It is especially high importance industry to adopt most efficient cost-effective methods. This critically reviews recent studies on while providing suggestions further application various physic-chemical biological methods complex containing a number recalcitrant pollutants.
Introduction: Percutaneous endoscopic gastrostomy (PEG) placement does not generate consensus in palliative care, given the existing doubts about whether it significantly contributes to an improvement patient outcomes such as survival, quality of life and symptomatic control. Objective: This study explored impact percutaneous on survival patients under community care Northern Portugal. Methods: observational, retrospective cohort involved 54 monitored by a specialized team between March 2020...
Ferroelectric materials with Bi-layered structure such as SrBi2Ta2O9 and SrBi2Nb2O9 are now intensively investigated in view of their applications nonvolatile computer memories high-temperature piezoelectric transducers. When Sr2+ is substituted Ba2+, a significant disorder induced the material exhibits broadening phase transition. Such essential for since it allows achieving smooth temperature characteristics while maintaining high dielectric properties. In this work, stoichiometric dense...