Results 71 to 80 of about 737,457 (274)

Triggered Ferroelectricity in HfO2 From Hybrid Phonons and Higher‐Order Dynamical Charges

open access: yesAdvanced Materials, EarlyView.
We combine first‐principles calculations, LGD theory and group theory to demonstrate the mechanism of hybrid‐triggered ferroelectricity in HfO2${\rm HfO}_2$, enabled by trilinear and quadlinear couplings between stable polar and nonpolar modes. HfO2${\rm HfO}_2$ hosts unconventional interplay between structure modes where substantial contribution to ...
Seongjoo Jung, Turan Birol
wiley   +1 more source

The current state and dynamics of regional disparities in Romania [PDF]

open access: yes
The paper aims to highlight the dynamics and current state of regional disparities in Romania, discussing both inter-regional disparities -between the eight development regions, corresponding to the NUTS II level- and intra-regional disparities -between ...
Bogdan Ileanu   +3 more
core  

Nanostructural differences in pectic polymers isolated from strawberry fruits with low expression levels of pectate lyase or polygalacturonase genes [PDF]

open access: yes, 2013
Our research group has obtained transgenic strawberry plants expressing antisense sequences of either a pectate lyase (APEL lines) [1] or a polygalacturonase gene (APG lines) [2].
Kirby, Andrew   +5 more
core  

Unraveling the Structure and Bonding Evolution of the Newly Discovered Iron Oxide FeO2

open access: yes, 2018
Recently reported synthesis of FeO2 at high pressure has stimulated great interest in exploring this new iron oxide and elucidating its properties.
Amsler, Maximilian   +2 more
core   +1 more source

Gold Nanorods in Cardiac Millitissues: Assessing Mechanical and Contractile Dynamics in a Living Engineering Myocardium Model

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents a novel platform for assessing the active mechanical behavior of living cardiac microbundles through localized nanoindentation, integrated with temperature regulation and dual‐camera imaging systems. The developed system enables quantitative evaluation of dynamic micromechanics in engineered cardiac tissues in vitro, offering ...
Lihua Lou   +4 more
wiley   +1 more source

Prevención cuaternaria: como hacer, como ensiñar

open access: yesRevista Brasileira de Medicina de Família e Comunidade, 2018
La prevención cuaternaria o P4 se define como las acciones que disminuyen los efectos de las intervenciones innecesarias, generadas por el contacto de las personas con los sistemas de salud.
Marina Almenas   +7 more
doaj   +1 more source

Discrete symmetry's chains and links between integrable equations

open access: yes, 2002
The discrete symmetry's dressing chains of the nonlinear Schrodinger equation (NLS) and Davey-Stewartson equations (DS) are consider. The modified NLS (mNLS) equation and the modified DS (mDS) equations are obtained.
A. V. Yurov   +15 more
core   +1 more source

Perfusion Bioreactor Culture Incorporating Mechanical Confinement Enhances Mesenchymal Stem Cell Extracellular Vesicle Production and Wound Healing Potential

open access: yesAdvanced Materials Technologies, EarlyView.
Scalable manufacturing challenges and limited potency remain two of the most intransigent issues limiting clinical translation of EV therapeutics. Mechanical cues can induce phenotypic changes and increased vesiculation in EV source cells without the use of extraneous reagents, chemicals, and/or cargo, thereby potentially drastically improving the ...
Emily H. Powsner   +10 more
wiley   +1 more source

Layer‐Dependent Antiferromagnetic Chern and Axion Insulating States in UOTe

open access: yesAdvanced Science, EarlyView.
Layer‐dependent topological phases are identified in the van der Waals antiferromagnet UOTe. Ab initio calculations reveal bilayer UOTe as a rare example of high‐temperature antiferromagnetic Chern insulator with quantized Hall conductivity and near‐zero net magnetization, while odd‐layer films exhibit axion‐insulator‐like behavior with quantized spin ...
Sougata Mardanya   +10 more
wiley   +1 more source

On Fluctuations of Conserved Charges : Lattice Results Versus Hadron Resonance Gas

open access: yes, 2010
We compare recent lattice results on fluctuations and correlations of strangeness, baryon number and electric charge obtained with p4 improved staggered action with the prediction of hadron resonance gas model.
Aoki Y   +5 more
core   +1 more source

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