Results 51 to 60 of about 24,331 (229)

Turismo criativo para todos: uma base para o planeamento sustentável de destinos

open access: yesDEDiCA, 2017
Atualmente, os destinos turísticos exigem uma oferta adaptada às exigências dos novos e diferentes mercados, tendo em vista a competitividade dos territórios.
Mariana Cabral   +3 more
doaj   +1 more source

Engineering Topological Phases with a Traveling‐Wave Spacetime Modulation

open access: yesLaser &Photonics Reviews, EarlyView.
Time‐varying systems have garnered considerable attention due to their unique potential in manipulating electromagnetic waves. Here, a novel class of topological spacetime crystals with a traveling‐wave modulation is introduced. By manipulating material anisotropy, one can engineer light angular momentum and non‐trivial topological phases characterized
João C. Serra, Mário G. Silveirinha
wiley   +1 more source

Effect of Nanoparticles Type and Content on the Antimicrobial Activity of Magnetoelectric Polymer‐Based Composites

open access: yesMacromolecular Bioscience, EarlyView.
Magnetoelectric P(VDF‐TrFE) nanocomposites containing CFO or Fe3O4 nanoparticles were developed to generate electroactive microenvironments under magnetic stimulation. At 1 Hz, particularly with 20% CFO, strong antimicrobial effects were observed against E. coli and S. aureus. This approach highlights the potential of magnetically activated surfaces to
Joana Moreira   +6 more
wiley   +1 more source

Using Lignin and Spent Coffee Grounds as Bio‐Additives in 3D‐Printable Poly Lactic Acid/Multi‐Walled Carbon Nanotube Composites for Advanced Electronic Applications

open access: yesPolymer Composites, EarlyView.
Bio‐based additives derived from lignin and spent coffee grounds (SCG) are used to enhance MWCNT dispersion in PLA composites, enabling improved electrical conductivity and reliable in material extruded strain‐gauge sensors. ABSTRACT In this work, three bio‐based additives, lignin, spent coffee grounds (SCG), and oil extracted from SCG (Ox‐SCG) were ...
Silvia Lage‐Rivera   +6 more
wiley   +1 more source

Nanoemulsion design of Cynara cardunculus leaves extract rich in sesquiterpene lactones

open access: yesPest Management Science, EarlyView.
This work introduces a novel formulation strategy that advances the potential of Cynara cardunculus leaf extract enriched in sesquiterpene lactones as a bioherbicide and contributes to the broader development of sustainable weed management tools based on natural products.
Daniela Rosa   +6 more
wiley   +1 more source

Performing Relevant Irradiation Experiments: The Role of Proton Flux in the Dynamic Annealing during Irradiation of Cu(In,Ga)Se2‐Based Solar Cells

open access: yesphysica status solidi (RRL) – Rapid Research Letters, EarlyView.
Energetic particles make space a harsh environment that solar cells must endure. This study demonstrates that proton flux critically affects radiation damage in Cu(In,Ga)Se2 solar cells. By irradiating identical cells at different fluxes, a flux‐dependent balance between defect generation and dynamic annealing was revealed.
Tiago V. Fernandes   +7 more
wiley   +1 more source

Social representation of young people in higher education about sexually transmitted infections. [PDF]

open access: yesRev Bras Enferm, 2023
Spindola T   +6 more
europepmc   +1 more source

Bridging Psychological Stress and Skin Cellular Aging: Flavonoids as a Dual‐Action Therapeutic Strategy

open access: yesPhytotherapy Research, EarlyView.
ABSTRACT Psychological stress (or simply “stress”) is a major contributor to chronic disease worldwide, affecting 35% of the global population, including younger generations. Furthermore, it plays a significant role in human premature aging; hence, its detrimental effects on people's health compel us to comprehend and control the ways in which ...
Marco Duarte   +3 more
wiley   +1 more source

A formação contínua de educadores e professores do 1º Ciclo em Tecnologias da Informação e Comunicação: Bases para um modelo conceptual de formação

open access: yesRevista Portuguesa de Pedagogia, 2008
A importância da formação de professores em TIC é reconhecida como factor crítico para a integração das TIC no contexto educativo. Este artigo apresenta algumas linhas de reflexão sobre os desafios da formação, fundamentando-se em modelos de referência ...
Belmiro Rego   +2 more
doaj   +1 more source

Digital Futures, Sustainable Outcomes: Mapping the Impact of Digital Transformation on EU SDG Progress

open access: yesSustainable Development, EarlyView.
ABSTRACT This study explores how digital transformation, measured by the Global Digitalisation Index (GDI), relates to progress on the UN Sustainable Development Goals (SDGs) across EU member states. Using partial correlation, regression analysis with interaction terms and cluster analysis, the research examines the moderating effects of governance and
Luis Fonseca   +4 more
wiley   +1 more source

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