Results 81 to 90 of about 3,233,671 (282)

Perspectiva histórica da evolução do conceito de museu em Portugal [PDF]

open access: yes, 2011
Traça-se uma síntese histórica das formas assumidas em Portugal pelo coleccionismo privado e público, da Idade Média aos nossos dias. Especial referência à génese moderna dos museus, ocorrida no período das Luzes, quando se criaram instituições museais ...
Brigola, João
core  

Incorporation of Selenium into Sol–Gel‐Derived Bioactive Glass: Influence on Glass Structure, Bioactivity, and its Selective Cytotoxicity

open access: yesAdvanced Engineering Materials, EarlyView.
Selenium was incorporated into a sol–gel‐derived bioactive glass to enable sustained therapeutic ion release. The selenium‐containing glass preserved bioactivity while selectively inducing cytotoxicity in osteosarcoma cells and maintaining osteoblastic viability.
Breno Rocha Barrioni   +7 more
wiley   +1 more source

A imprensa feminina no Rio de Janeiro, anos 20: um sistema de informação cultural

open access: yesCiência da Informação, 1995
A implantação da imprensa periódica brasileira no século XIX influencia as origens da imprensa feminina que ressurgiu na década de 20, quando as questões relativas à emancipação feminina começavam a aparecer na imprensa.
Kátia de Carvalho
doaj  

Axial Vector Duality in Affine NA Toda Models

open access: yes, 2002
A general and systematic construction of Non Abelian affine Toda models and its symmetries is proposed in terms of its underlying Lie algebraic structure.
Gomes, J. F.   +2 more
core   +3 more sources

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

open access: yesAdvanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho   +8 more
wiley   +1 more source

Analysis of the Jun Ishiwara's "The universal meaning of the quantum of action"

open access: yes, 2017
Here we present an analysis of the paper "Universelle Bedeutung des Wirkungsquantums" (The universal meaning of the quantum of action), published by Jun Ishiwara in German in the "Proceedings of Tokyo Mathematico-Physical Society 8 (1915) 106-116".
Brasil, Carlos Alexandre, Pelogia, Karla
core   +1 more source

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

open access: yesAdvanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut   +16 more
wiley   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

Violencia endémica en Brasil y el ethos de los conflictos prolongados

open access: yesRevista Latinoamericana Estudios de la Paz y el Conflicto
Brasil se enfrenta a una violencia endémica marcada por decenas de miles de homicidios anuales. Este estudio examina cómo un ethos de conflicto perpetúa este escenario, utilizando el marco teórico de Bar-Tal para analizar temas de creencias sociales ...
Marcelo Furtado Martins de Paula
doaj   +1 more source

BRASIL:

open access: yesRevista da Escola Superior de Guerra, 1969
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openaire   +2 more sources

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