Results 131 to 140 of about 4,978,756 (344)

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

Os caminhos cruzados entre ética e metafísica no conceito de responsabilidade

open access: yesCadernos Cajuína, 2017
O presente artigo, em verdade um pré-projeto de doutorado, procura entender o status da Responsabilidade no âmbito ético metafísico da obra de Hans Jonas, em específico O Princípio Responsabilidade.
Luciano Gomes Brazil
doaj  

COVID-19: Local/regional inequalities and impacts over critical healthcare infrastructure in Brazil [PDF]

open access: diamond, 2020
Wilson Cabral de Sousa   +2 more
openalex   +1 more source

Epidemiological and clinical characteristics of the COVID-19 epidemic in Brazil

open access: yesNature Human Behaviour, 2020
W. M. de Souza   +41 more
semanticscholar   +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

Diagnosis and phylogenetic analysis of bovine leukemia virus in dairy cattle in northeastern Brazil [PDF]

open access: gold, 2023
José Gomes Pereira   +10 more
openalex   +1 more source

A New Family of Ternary Intermetallic Compounds with Dualistic Atomic Ordering – The ZIP Phases

open access: yesAdvanced Materials, EarlyView.
The ZIP phases are ternary intermetallic compounds with dualistic atomic ordering, i.e., they exhibit one face‐centered cubic (fcc; space group Fd3¯$\bar 3$m) variant and one hexagonal (space group P63/mmc) variant. The ZIP phases in the Nb‐Si‐Ni system are the Nb3SiNi2 (fcc) and Ni3SiNb2 (hexagonal) ternary IMCs, crystal structure schematics of which ...
Matheus A. Tunes   +24 more
wiley   +1 more source

A Conversation with Molly Stevens

open access: yesACS Central Science, 2021
Rachel Brazil
doaj   +1 more source

THz‐Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites

open access: yesAdvanced Materials, EarlyView.
Intense THz pulses are employed to drive coherent phonons in 2D Ruddlesden‐Popper hybrid metal‐halide perovskites (HOIPs) from the (PEA)2(MA)n‐1PbnI3n+1 family, revealing mode‐selective spectroscopic signatures of inversion symmetry breaking in those nominally centrosymmetric materials. These findings provide a handle to decode nonlinear phonon driving
Joanna M. Urban   +14 more
wiley   +1 more source

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