Maria Elisabete V. Costa
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View article: Catalytic Degradation of Ciprofloxacin Using CuO Persulfate Oxidation System—Kinetics and Mechanisms
Catalytic Degradation of Ciprofloxacin Using CuO Persulfate Oxidation System—Kinetics and Mechanisms Open
In this study, CuO nanoparticles were synthesised by chemical precipitation assisted by ultrasonic irradiation (UI), a rapid and environmentally friendly procedure without high temperature that enhances the sustainability of the synthesis …
View article: Palliative Care in the Community and the Relevance of Percutaneous Endoscopic Gastrostomy Placement to Quality of Life and Survival
Palliative Care in the Community and the Relevance of Percutaneous Endoscopic Gastrostomy Placement to Quality of Life and Survival Open
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 in patient outcomes such as survival, …
View article: Palliative Care in the Community and the Relevance of Percutaneous Endoscopic Gastrostomy Placement on Quality of Life and Survival
Palliative Care in the Community and the Relevance of Percutaneous Endoscopic Gastrostomy Placement on Quality of Life and Survival Open
The study explores the impact of percutaneous endoscopic gastrostomy (PEG) placement on survival and quality of life in patients under community palliative care in northern Portugal. This observational, retrospective cohort study involved …
View article: Flash sintering of tunable dielectric Ba0.6Sr0.4TiO3 electroceramics
Flash sintering of tunable dielectric Ba0.6Sr0.4TiO3 electroceramics Open
Ba(1-x)SrxTiO3 (BST) is a crucial dielectric material in tunable devices for modern wireless communication technologies, owing to high dielectric tunability and low dielectric loss. However, the conventional processing of BST ceramics requ…
View article: Activation of peracetic acid by a magnetic biochar-ferrospinel AFe2O4 (A = Cu, Co, or Mn) nanocomposite for the degradation of carbamazepine − A comparative and mechanistic study
Activation of peracetic acid by a magnetic biochar-ferrospinel AFe2O4 (A = Cu, Co, or Mn) nanocomposite for the degradation of carbamazepine − A comparative and mechanistic study Open
sponsorship: This work was supported by the China Scholarship Council (CSC) [grant number 202009505003] . (China Scholarship Council (CSC)|202009505003)
View article: Activation of peroxymonosulfate by Fe,N co-doped walnut shell biochar for the degradation of sulfamethoxazole: Performance and mechanisms
Activation of peroxymonosulfate by Fe,N co-doped walnut shell biochar for the degradation of sulfamethoxazole: Performance and mechanisms Open
Fe and N co-doped walnut shell biochar (Fe,N-BC) was prepared through a one-pot pyrolysis procedure by using walnut shells as feedstocks, melamine as the N source, and iron (III) chloride as the Fe source. Moreover, pristine biochar (BC), …
View article: Exploring the roles of ascorbic acid/L-cysteine in boosted carbamazepine degradation by biochar-CuFe2O4/Fe2O3/CuO/peroxymonosulfate: Taguchi optimization and mechanistic studies
Exploring the roles of ascorbic acid/L-cysteine in boosted carbamazepine degradation by biochar-CuFe2O4/Fe2O3/CuO/peroxymonosulfate: Taguchi optimization and mechanistic studies Open
sponsorship: Yongtao Xue would like to acknowledge the China Scholarship Council (CSC) of the Ministry of Education, P. R. China (CSC NO. 202009505003) . (China Scholarship Council (CSC) of the Ministry of Education, P. R. China|2020095050…
View article: Exploring the low temperature fabrication and properties of barium strontium titanate tunable dielectric ceramics
Exploring the low temperature fabrication and properties of barium strontium titanate tunable dielectric ceramics Open
Ba1-xSrxTiO3 compounds are widely recognized as leading dielectric materials for tunable electronic applications. To expand their applicability and enable integration with polymers and metals, there is a need for low-temperature processing…
View article: The dissolution of potassium sodium niobate (KNN) in aqueous media towards sustainable electroceramics sintering
The dissolution of potassium sodium niobate (KNN) in aqueous media towards sustainable electroceramics sintering Open
K0.5Na0.5NbO3 (KNN) is as a relevant lead-free piezoelectric material due to its piezoelectric performance and a high Curie temperature. Although high-sintering temperature is required for obtaining dense KNN ceramics, it favours alkalis v…
View article: FLASH sintering of porcelain stoneware: Effect of composition modifications
FLASH sintering of porcelain stoneware: Effect of composition modifications Open
In this work, we have exploited FLASH sintering as an alternative sintering process in the production of porcelain stoneware. FLASH sintering of porcelain stoneware occurred at temperatures ∼ 1020 °C, for 500 V cm-1, 2 mA mm-2 in 30 s. The…
View article: Opioids and constipation therapy in the last week of life: Their impact on patients, caregivers, and the location of death
Opioids and constipation therapy in the last week of life: Their impact on patients, caregivers, and the location of death Open
The use of opioids to control pain at the end of life may cause constipation, a symptom that can negatively influence the well-being of patients and caregivers. The main aim of this study was to evaluate the impact of constipation on sympt…
View article: Stress induced effects on piezoelectric polycrystalline potassium sodium niobate thin films
Stress induced effects on piezoelectric polycrystalline potassium sodium niobate thin films Open
This work reports a systematical study highlighting the impact of substrate induced stress as a key parameter for the electrical performance and phase transition temperatures of (K,Na)NbO 3 polycrystalline thin films.
View article: Different Strategies to Attenuate the Toxic Effects of Zinc Oxide Nanoparticles on Spermatogonia Cells
Different Strategies to Attenuate the Toxic Effects of Zinc Oxide Nanoparticles on Spermatogonia Cells Open
Zinc oxide nanoparticles (ZnO NPs) are one of the most used nanoparticles due to their unique physicochemical and biological properties. There is, however, a growing concern about their negative impact on male reproductive health. Therefor…
View article: WC-Co Filament for Material Extrusion (MEX)
WC-Co Filament for Material Extrusion (MEX) Open
Harder, better, faster, and stronger are requisites that are constantly being craved by manufacturing industries to match the ever-challenging productivity of new materials, geometries, and production cycles [...]
View article: ZnO/γ-Fe2O3/Bentonite: An Efficient Solar-Light Active Magnetic Photocatalyst for the Degradation of Pharmaceutical Active Compounds
ZnO/γ-Fe2O3/Bentonite: An Efficient Solar-Light Active Magnetic Photocatalyst for the Degradation of Pharmaceutical Active Compounds Open
For applications related to the photocatalytic degradation of environmental contaminants, engineered nanomaterials (ENMs) must demonstrate not only a high photocatalytic potential, but also a low tendency to agglomeration, along with the a…
View article: Particle Characteristics’ Influence on FLASH Sintering of Potassium Sodium Niobate: A Relationship with Conduction Mechanisms
Particle Characteristics’ Influence on FLASH Sintering of Potassium Sodium Niobate: A Relationship with Conduction Mechanisms Open
The considerable decrease in temperature and time makes FLASH sintering a more sustainable alternative for materials processing. FLASH also becomes relevant if volatile elements are part of the material to be processed, as in alkali-based …
View article: In Vitro Cytotoxicity Effects of Zinc Oxide Nanoparticles on Spermatogonia Cells
In Vitro Cytotoxicity Effects of Zinc Oxide Nanoparticles on Spermatogonia Cells Open
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 of ZnO NPs, since their size and surface area favor entrance and accumulation in …
View article: Optical properties of hydrothermally synthesised and thermally annealed ZnO/ZnO<sub>2</sub> composites
Optical properties of hydrothermally synthesised and thermally annealed ZnO/ZnO<sub>2</sub> composites Open
ZnO/ZnO2 composites synthesised via a hydrothermal approach revealed a high surface area (90 m2 g−1) and a photoluminescence signal strongly dependent on the measurement atmosphere.
View article: Effect of Solution Conditions on the Properties of Sol–Gel Derived Potassium Sodium Niobate Thin Films on Platinized Sapphire Substrates
Effect of Solution Conditions on the Properties of Sol–Gel Derived Potassium Sodium Niobate Thin Films on Platinized Sapphire Substrates Open
If piezoelectric micro-devices based on K0.5Na0.5NbO3 (KNN) thin films are to achieve commercialization, it is critical to optimize the films’ performance using low-cost scalable processing conditions. Here, sol–gel derived KNN thin films …