Results 71 to 80 of about 252,875 (288)
Single or functionalized fullerenes interacting with heme group
AIP Advances, 2014 The heme group is responsible for iron transportation through the bloodstream, where iron participates in redox reactions, electron transfer, gases detection etc. The efficiency of such processes can be reduced if the whole heme molecule or even the iron
Wallison Chaves Costa +1 more
doaj +1 more source
Novos caminhos do tráfico atlântico: cativos afro-portugueses no Brasil colonial
Afro-Ásia, 2013 .
Daniela Buono Calainho
doaj +1 more source
Os refugiados em manifestos políticos presidenciais: entre silenciar e dar voz
Comunicação e Sociedade, 2020 A crise dos migrantes e refugiados na Europa do século XXI originou novas divergências no velho continente que colocam desafios difíceis à construção da identidade europeia.
Alexandra Guedes Pinto
doaj +1 more source
Resolving the Structural Duality of Graphene Grain Boundaries
Advanced Materials, EarlyView.Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo +11 more
wiley +1 more source
Assinaturas árabes em documentos medievais portugueses [PDF]
, 2011 As assinaturas árabes na documentação medieval portuguesa consubstanciam, no seu conjunto, um instrumento de análise da produção própria das comunidades mudéjares e dos seus códigos auto-referenciais.
Barros, Maria Filomena Lopes de
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POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes
Advanced Materials, EarlyView.A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez +8 more
wiley +1 more source
Smarandache Sequences: Explorations and Discoveries with a Computer Algebra System [PDF]
We study Smarandache sequences of numbers, and related problems, via a Computer Algebra System.
Delfim F. M. Torres, Paulo D. F. Gouveia
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“Amor em tempo de guerra: as ‘madrinhas de guerra’ no contexto da guerra colonial portuguesa (1961-1974)” [PDF]
, 2011 O fenómeno político-militar, mas também social, designado em Portugal e na Europa como “madrinhas de guerra”, emergiu e consolidou-se durante a Primeira Guerra Mundial.
Martins, Fernando
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Portuguese art: Portuguese azulejo [PDF]
, 2017 Azulejo is the Portuguese word to describe a square ceramic plaque with decorations and glaze on one side. Azulejos have transcended their utilitarian decorative function in Portugal to become one of the most expressive art forms of Portuguese culture.
openaire
Advanced Materials, EarlyView.A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal +7 more
wiley +1 more source