Results 121 to 130 of about 7,440 (255)

PLATAN'S POLYHEDRONS

open access: yes, 2020
Introdução: O tema “Poliedros de Platão” foi escolhido para esta pesquisa, afim de trabalhar a Geometria Espacial de uma forma prática, dinâmica, além de facilitar o entendimento dos leitores sobre o assunto. Desmistificando que poliedros é uma temática difícil de ser compreendida, através do grande filósofo e matemático – Platão. Entende-se também que
Ferreira, Vinícius de Almeida   +1 more
openaire   +1 more source

Ordered Pt3Mn Intermetallic Nanoparticles Supported on Atomically Dispersed Mn–N–C as Electrocatalysts for Fuel Cells

open access: yesAngewandte Chemie, EarlyView.
Ordered L12‐Pt3Mn intermetallic alloys are uniformly deposited onto atomically dispersed Mn–N–C supports. The synergistic effect between MnN4 sites and Pt3Mn elevates interfacial binding strength and dissolution barriers while favorably weakening *OH adsorption. It delivers exceptional catalytic activity and stability in fuel cells, serving as an ideal
Gongjin Chen   +8 more
wiley   +2 more sources

Tailor-made metasurfaces for scattering control. [PDF]

open access: yesSci Rep
Tsukerman M   +10 more
europepmc   +1 more source

Matching the Coupling of Valence Electrons in the Oxide Interface to Perturb the Magnetic Order Enhancing Oxygen Reduction in Zinc–Air Batteries

open access: yesAngewandte Chemie, EarlyView.
Sub‐5 nm Fe2O3/Sm2O3 heterojunction nanoparticles are anchored on nitrogen‐doped carbon nanofibers, featuring coupled Fe(3d)‐O(2p)‐Sm(4f) orbitals at the interface. The resulting super‐exchange induces antiparallel magnetic ordering at heterointerfaces, suppressing spin‐dependent interaction between surface OH* species and Fe sites to facilitate OH ...
Jing Li   +9 more
wiley   +2 more sources

Defect‐Guided Assembly of Aperiodic and Flexible Metal–Organic Frameworks From Pre‐Formed Cages

open access: yesAngewandte Chemie, EarlyView.
A cage‐directed strategy is used to program topologically correlated defects and induce aperiodicity in HKUST‐1‐type MOFs. A missing carboxylate group in the linker drives the formation of Cu‐vacancy domains, while Rh(II) cages spatially confine these defects.
Francisco Sánchez‐Férez   +12 more
wiley   +2 more sources

Impact of DsCPV-1 Passage Through Alternative Host <i>Manduca sexta</i> on Its Virulence, Productivity, and Transmission Potential in Lepidopteran Forest Pests. [PDF]

open access: yesInsects
Subbotina AO   +7 more
europepmc   +1 more source

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