Results 101 to 110 of about 7,031,373 (331)

Microwave Absorption for Detection of Dirac Fermions in SnTe Films

open access: yesAdvanced Materials Interfaces, EarlyView.
Microwave absorption can detect Dirac fermions in samples exposed to the atmosphere. Results showed that although topological surface states are robust against environmental degradation, they are not detectable by electrical transport measurements. Hence, microwave absorption can detect Dirac fermions even in samples whose surfaces have deteriorated ...
Wellington P. do Prado   +8 more
wiley   +1 more source

Structural change, National Innovation System and balance-of-payments contraint: a theoretical and empirical analysis of the Brazilian case [PDF]

open access: yes
The paper explores the relationship between the income elasticities of demand for exports and for imports, economic growth, the technological content of local production, and the level of development of the National Innovation System (NIS).
Fabrício Silveira   +2 more
core  

3D Printing of Highly Dense and Translucent Zirconia Parts for Dental Applications: Effect of Filament Overlapping

open access: yesAdvanced Materials Technologies, EarlyView.
This study formulated a 5Y‐PSZ zirconia paste for extrusion‐based additive manufacturing via direct ink writing, producing dense ceramic structures for dental applications. A colloidal approach with 47 vol% nanometric powder and tailored additives optimized rheology and printability.
Juliana de Freitas Gouveia Silva   +5 more
wiley   +1 more source

“A invençó do Brasile”: Juó Bananére and Non-Italian Italian literature [PDF]

open access: yes, 2019
This essay focuses on the fascinating case of Juó Bananére, a comic writer of the Italian diaspora in Brazil, to propose an experiment in how literary historians might conceive of Italian Literature from perspectives immanent to Italy’s various global ...
Shuchmacher Endebo, Nelson
core  

Coupling of Er3+ ions and Plasmonic Modes in Vertical Nanocavities for Spectral Broadening in Telecom Bands

open access: yesAdvanced Materials Technologies, EarlyView.
Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón   +5 more
wiley   +1 more source

O lugar social do narrador morto: enunciação e interlocução nas Memórias Póstumas de Brás Cubas, de Machado de Assis

open access: yesBrasiliana: Journal for Brazilian Studies, 2019
Este trabalho propõe uma análise do defunto autor das Memórias Póstumas de Brás Cubas, na perspectiva da crítica de Roberto Schwarz e das reflexões sobre a linguagem do linguista russo Mikhail Bakhtin, para trabalhar a enunciação e a interlocução ...
Irenísia Torres de Oliveira
doaj   +1 more source

The incidence of reserve requirements in Brazil: Do bank stockholders share the burden? [PDF]

open access: yes
There is consensus in the economic literature that reserve requirements are a tax levied upon financial intermediation, yet the incidence of the tax remains controversial.
Cyntia F. Azevedo   +1 more
core  

A Perspective on the Applications of Triphasic Gas Storage in Electrochemical Systems

open access: yesAdvanced Science, EarlyView.
Gas storage in microporous materials positioned locally at an electrode or electrocatalyst surface enhances electrochemical processes. Abstract Microporous materials store gases under dry conditions (e.g., hydrogen or oxygen via physisorption), but in some cases microporous materials also show triphasic (e.g., in a solid|gas|liquid system) gas storage ...
Zhongkai Li   +9 more
wiley   +1 more source

A meditação sobre o Tietê: a voz lírica entre a morte e a vida

open access: yesBrasiliana: Journal for Brazilian Studies, 2019
No poema longo “A meditação sobre o Tietê”, do escritor modernista brasileiro Mário de Andrade, publicado postumamente em Lira paulistana, em 1945, o eu lírico, como Narciso, se vê projetado nas águas do Tietê, a partir da ponte das Bandeiras, em São ...
Cristiane Rodrigues de Souza
doaj   +1 more source

On the Origins of Toughness in Corymbia calophylla (Marri Tree) Nuts

open access: yesAdvanced Science, EarlyView.
We uncover the natural toughening mechanisms of the marri nut, including fiber pullout, crack deflection, and a viscoelastic matrix, which enable exceptional energy absorption and ductility comparable to Teflon, with an elastic modulus similar to acrylic.
Wegood M. Awad   +7 more
wiley   +1 more source

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