Results 41 to 50 of about 1,826,337 (396)

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand   +13 more
wiley   +1 more source

The margin is where everything starts and everything ends . A. Dasilva O. Speaks to the country through Rádio Caos

open access: yesTravessias, 2020
In the mid-1980s, Porto began to open to the cultural, musical, and aesthetic change announced by (post)-modernism. Resistance - and the search for the new - also began to make itself felt through radio programmes, fanzines, concerts, and bulletins ...
Paula Guerra
doaj  

Cidades, portos e cidades portuárias na era da integração produtiva Cities, ports, and port cities in the integrated production era

open access: yesRevista de Administração Pública, 2006
Este artigo discute a evolução das relações cidades/portos e os desafios impostos na era da globalização. A reorganização dos espaços produtivos e o surgimento de dinâmicas comerciais específicas incluíram um conjunto de mudanças na estrutura mundial dos
Frédéric Monié   +1 more
doaj   +1 more source

Record Energy Storage Performance Metrics in Ferroelectric Hafnia‐Based Films through Heterostructure Design

open access: yesAdvanced Functional Materials, EarlyView.
Dielectric capacitors typically struggle to achieve both high energy storage density and high efficiency at applied voltages below 10 V. Here, we address this challenge by introducing a novel hybrid fluorite/perovskite heterostructure design that combines ultra‐high recoverable energy storage density with efficient energy release (Uf ≈ 1016 J/cm3), at ...
Ampattu R. Jayakrishnan   +10 more
wiley   +1 more source

Propagation and stability of optical pulses in a diffractive dispersive non-linear medium [PDF]

open access: yes, 1992
Propagation and stability of light pulses under the combined influence of the optical Kerr effect, dispersion and diffraction are investigated by adopting a variational procedure. In particular, it is found that 'light bullets', i.e.
Crosignani, B.   +2 more
core   +1 more source

Collaborative research to enhance a business tourism destination: a case study from Porto

open access: yesJournal of Policy Research in Tourism, Leisure and Events, 2020
The purpose of this study is to diagnose the business tourism segment in the city of Porto and to propose a set of strategic measures to boost its development and convert the territory into a preferred business tourism destination.
Jorge Marques, Micaela Pinho
semanticscholar   +1 more source

Piezoelectric Surface Charge and Dynamic Stimulation Synergize to Promote Cardiac Myoblast Alignment and Maturation

open access: yesAdvanced Healthcare Materials, EarlyView.
Surface polarization of PVDF films combined with mechanical stimulation generates piezoelectric electrical cues that modulate cardiomyoblast behaviour. Non‐poled and poled PVDF substrates provide distinct electroactive microenvironments influencing cell adhesion, proliferation, and differentiation.
Rafaela M Meira   +3 more
wiley   +1 more source

Estudo sobre a implantação do orçamento baseado em desempenho na Autoridade Portuária de Valência Estudio sobre la ejecución del presupuesto basado en el desempeño de la Autoridad Portuaria de Valencia Performance-Based Budgeting study of the implementation in Valenciaport

open access: yesRevista de Administração Pública, 2013
O crescimento e o desenvolvimento da economia mundial têm dependido cada vez mais do transporte marítimo, e os portos são um elo importante nesse processo.
Rogério João Lunkes   +3 more
doaj  

Gentrification in Porto: floating city users and internationally-driven urban change

open access: yesUrban Geography, 2019
The heightening scale of urban tourism and the fast-growing number of “floating” city users raise new challenges to understand contemporary urban change – namely for internationally open, heritage-rich medium-sized cities. Discussing the case of Porto at
L. Carvalho   +3 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy