Results 141 to 150 of about 9,381 (200)

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

open access: yesAdvanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang   +8 more
wiley   +1 more source

BOARD OF DIRECTORS AND AUDIT COMMITTEE CHARACTERISTICS OF LISTED COMPANIES ON THE BM&FBOVESPA

open access: yes, 2018
Este estudio tuvo como objetivo verificar las características del consejo de administración y del comité de auditoría de las empresas listadas en la BM&FBovespa. Con ese propósito, se realizó una investigación descriptiva con enfoque cuantitativo y procedimiento documental de recolección de datos.
Reyes, Marilbeth Carolina Rodríguez   +3 more
openaire   +1 more source

Non Thermal‐Driven Photocatalytic Ammonia Decomposition at Near‐Room Temperature on a Plasmonic Nanocone Array

open access: yesAdvanced Functional Materials, EarlyView.
Plasmonic photocatalytic ammonia decomposition occurs at near‐room temperature on a plasmonic Au nanocone array under visible light illumination. The nanostructure efficiently harnesses plasmonic modes, leading to increased reaction rates upon plasmon decay.
Thanh‐Lam Bui   +17 more
wiley   +1 more source

PERFORMANCE INDICATORS AND MARKET VALUE: AN ANALYSIS ON THE COMPANIES LISTED IN BM&FBOVESPA

open access: yes, 2017
The study investigated the relationship between the performance indicators and the market value of the BM&FBovespa listed companies by analyzing six performance variables (ROA, ROE, Net Margin, EBITDA and EBITDA margin) through Pearson correlation and multiple linear regressions with panel data.
Oliveira, José Felipe da Rocha   +3 more
openaire   +1 more source

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

open access: yesAdvanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri   +6 more
wiley   +1 more source

Ladder‐Type Benzene‐Perylene Dyes with Efficient Laser Properties in the Near‐IR by Detracting/Activating Low/High Frequency Vibronic Modes

open access: yesAdvanced Functional Materials, EarlyView.
The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández   +12 more
wiley   +1 more source

Audit committee characteristics and earning management: a study in companies listed on the BM&FBOVESPA

open access: yes, 2014
O estudo teve como objetivo verificar se características do Comitê de Auditoria refletem no Gerenciamento de Resultados (GR) das empresas brasileiras listadas na BM&FBovespa. Foram analisadas 31 empresas em 2010 e 33 empresas no ano de 2011. A população corresponde as empresas listadas na BM&FBovespa, totalizando 415 empresas.
Cunha, Paulo Roberto da   +3 more
openaire   +1 more source

Teoria das Ondas de Elliott- Uma aplicação ao mercado de ações aa Bm&Fbovespa [PDF]

open access: yes
Os preços dos ativos negociados em bolsas de valores, assim como qualquer outro tipo de commodity do mercado financeiro, oscilam naturalmente com a procura por esses produtos.
Daniele Ferreira de Sousa   +1 more
core  

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu   +3 more
wiley   +1 more source

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