Results 101 to 110 of about 1,401,302 (280)

Briófitos ripícolas de ecossistemas aquáticos da Ilha da Madeira:biodiversidade, bioindicação e conservação [PDF]

open access: yes, 2009
Tese de doutoramento, Biologia (Ecologia), Universidade de Lisboa, Faculdade de Ciências, 2010Disponível no documentoFundação para a Ciência e Tecnologia (SFRH/BD/12444/2003), III Quadro Comunitário de Apoio através do Programa Operacional CIência e ...
Tomás, Leena Margarida Xavier Luís, 1979-
core  

Ficheiro resultante do alinhamento de partes de vocabulários - Ciência da Computação

open access: green, 2021
João Pedro Tôrres Guimarães   +2 more
openalex   +1 more source

Microporous Microgel Assemblies Facilitating the Recruitment and Osteogenic Differentiation of Progenitor Cells for Bone Regeneration

open access: yesAdvanced Functional Materials, EarlyView.
There is a significant need for biomaterials with well‐defined stability and bioactivity to support tissue regeneration. In this study, we developed a tunable microgel platform that enables the decoupling of stiffness from porosity, thereby promoting bone regeneration.
Silvia Pravato   +9 more
wiley   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

Ligações perigosas: ciência e activismo político [PDF]

open access: yes, 2002
Na luta pelo monopólio da definição legítima da realidade, a ciência, sistema fundamental de legitimação e redefinição da ordem social, constitui um foco particular de interesse e investimento por parte de diversos agentes sociais. Este artigo representa
Brandão, Ana Maria
core  

Stabilizing Cationic Palladium Single‐Atom Sites on Heteroatom‐Doped Carbon for Selective Hydrogen Peroxide Electrosynthesis

open access: yesAdvanced Functional Materials, EarlyView.
In this research, it is demonstrated that dual nitrogen and sulfur doping in hollow carbon spheres creates a tunable coordination environment that stabilizes cationic Pd single atoms as robust organometallic complexes, enabling high selectivity and stability for electrochemical hydrogen peroxide production under harsh acidic and peroxide‐rich ...
Guilherme V. Fortunato   +16 more
wiley   +1 more source

A ciência e a tecnologia para os estudantes brasileiros : percepções [PDF]

open access: yes, 2013
Nos anos de 2010 e 2011 realizamos uma pesquisa nacional para verificar as percepções dos estudantes brasileiros sobre temas relacionados à ciência e tecnologia. Esta investigação buscou averiguar como os jovens em idade escolar (Ensino Médio) percebem a
Bertoldo, Raquel Roberta   +6 more
core   +1 more source

Emergent Magnetic Structures at the 2D Limit of the Altermagnet MnTe

open access: yesAdvanced Functional Materials, EarlyView.
Renewed interest in MnTe has emerged due to its intriguing altermagnetism, a newly identified form of magnetism distinct from conventional ferro‐, antiferro‐, or paramagnetism. By combining magnetic X‐ray absorption spectroscopy, scanning tunnelling microscopy, and first‐principles theory, this study reveals that thinning MnTe to the 2D limit ...
Marc G. Cuxart   +10 more
wiley   +1 more source

Magnetic and Structural Response Tuned by Coexisting Mn Concentration‐Dependent Phases in MnBi2Te4 Thin Film Grown on GaAs(001) by Molecular Beam Epitaxy

open access: yesAdvanced Functional Materials, EarlyView.
The study explores structural and magnetic properties of one of the most recent topological quantum materials (MnBi2Te4). The Mn‐poor structure leads to stacking faults (quintuple layer ‐ QL of Bi2Te3 formation instead of a septuple layer ‐ SL of MnBi2Te4), resulting in a coexistence between weak antiferromagnetism and ferromagnetism.
Wesley F. Inoch   +10 more
wiley   +1 more source

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