Results 21 to 30 of about 640,150 (326)

Evolução deformacional das rochas do Vale do Jacurici: implicações para a estruturação dos corpos cromitíferos máfico-ultramáficos

open access: yesGeologia USP. Série Científica, 2017
Baseado na análise estrutural de rochas do Vale do Jacurici, encaixantes de corpos máfico-ultramáficos mineralizados em cromita, reconheceram-se quatro eventos deformacionais, os quais foram estabelecidos segundo um regime deformacional inicialmente ...
Harrizon Lima de Almeida   +2 more
doaj   +1 more source

BME-Y5V Materials Prepared by Solid State Technology

open access: yesActive and Passive Electronic Components, 2002
In this paper the properties of BME-Y5V dielectric powders prepared by solid state technology is described. A new formulation is presented, suitable in multilayer capacitors for layers down to 4μm . The material shows good reliability due to the presence
G. Koebrugge   +2 more
doaj   +1 more source

Remarkable Ionic Conductivity in a LZO-SDC Composite for Low-Temperature Solid Oxide Fuel Cells

open access: yesNanomaterials, 2021
Recently, appreciable ionic conduction has been frequently observed in multifunctional semiconductors, pointing out an unconventional way to develop electrolytes for solid oxide fuel cells (SOFCs).
Zhengwen Tu   +9 more
doaj   +1 more source

The sintering temperature effect on electrochemical properties of Ce0.8Sm0.05Ca0.15O2-δ (SCDC)-La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) heterostructure pellet

open access: yesNanoscale Research Letters, 2019
Recently, semiconductor-ionic materials (SIMs) have emerged as new functional materials, which possessed high ionic conductivity with successful applications as the electrolyte in advanced low-temperature solid oxide fuel cells (LT-SOFCs).
Xiyu Nie   +8 more
doaj   +1 more source

Oxygen-Defect Enhanced Anion Adsorption Energy Toward Super-Rate and Durable Cathode for Ni–Zn Batteries

open access: yesNano-Micro Letters, 2021
The alkaline zinc-based batteries with high energy density are becoming a research hotspot. However, the poor cycle stability and low-rate performance limit their wide application.
Jia Yao   +12 more
doaj   +1 more source

Secondary Exfoliation of Electrolytic Graphene Oxide by Ultrasound Assisted Microwave Technique

open access: yesNanomaterials, 2021
Scalable production of large size and high quality graphene is an important prerequisite to fully realize its commercial applications. Herein, we propose a high-efficient route for preparing few-layer graphene.
Yin Yang, Ziyang Wang, Shaobo Zheng
doaj   +1 more source

Multicritical Points And Reentrant Phenomenon In The BEG Model

open access: yes, 1992
The Blume - Emery - Griffiths model is investigated by use of the cluster variation method in the pair approximation. We determine the regions of the phase space where reentrant phenomenon takes place.
Alessandro Pelizzola   +19 more
core   +2 more sources

Superfluid spin transport in magnetically ordered solids

open access: yes, 2020
The paper reviews the theory of the long-distance spin superfluid transport in solid ferro- and antiferromagnets based on the analysis of the topology, the Landau criterion, and phase slips.
Sonin, E. B.
core   +1 more source

Multiresistance states in ferro- and antiferroelectric trilayer boron nitride

open access: yesNature Communications
Here, the authors use three-layer boron nitride to construct interfacial ferro- and antiferroelectric tunnel junctions and find that the polarization is flipped in a layer-by-layer way, resulting in multiresistance states.
Ming Lv   +6 more
semanticscholar   +1 more source

CARACTERIZAÇÃO TECNOLÓGICA DA ESCÓRIA Fe-Cr BAIXO CARBONO E RECUPERAÇÃO DA LIGA METÁLICA POR MESA CONCENTRADORA

open access: yesHolos, 2015
A escória Fe-Cr baixo carbono, é um dos principais resíduos advindos do processo metalúrgico para obtenção de liga de Fe-Cr. Este resíduo não possui aplicação e encontra-se acumulado em pátios, conforme regulamentação de órgãos ambientais.
Aline Maria dos Santos Teixeira   +4 more
doaj   +1 more source

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