Results 31 to 40 of about 68,545 (296)

Hubbard Model with Inter-Site Kinetic Correlations

open access: yes, 2008
We introduced the inter-site electron-electron correlation to the Hubbard III approximation. This correlation was excluded in the Hubbard III approximation and also in the equivalent coherent potential approximation.
Gorski, Grzegorz, Mizia, Jerzy
core   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

open access: yesAdvanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari   +4 more
wiley   +1 more source

Modélisation géomatique rétrospective des paysages par évaluation multicritères et multiobjectifs [PDF]

open access: yes, 2007
International audienceParmi les fonctions SIG pour la modélisation spatio-temporelle et l'aide à la décision, l'évaluation multicritères et multiobjectifs s'avèrent être particulièrement utile en ce qui concerne la reproductibilité des résultats et le ...
Camacho Olmedo, Maria,   +2 more
core   +1 more source

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

open access: yesAdvanced Functional Materials, EarlyView.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono   +6 more
wiley   +1 more source

EVALUATION DU POTENTIEL DES SERIES D’IMAGES MULTI-TEMPORELLES OPTIQUE ET RADAR DES SATELLITES SENTINEL 1 & 2 POUR LE SUIVI D’UNE ZONE CÔTIÈRE EN CONTEXTE TROPICAL : CAS DE L’ESTUAIRE DU CAMEROUN POUR LA PÉRIODE 2015-2020

open access: yesRevue Française de Photogrammétrie et de Télédétection, 2021
Ce travail porte sur l’évaluation du potentiel des images multi-temporelles et multi-capteurs (optique et radar) des satellites Sentinel 1 et 2 pour la cartographie de l’occupation du sol et le suivi de l’évolution du trait de côte dans un écosystème ...
Nourdi Njutapvoui   +2 more
doaj   +1 more source

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

open access: yesAdvanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti   +8 more
wiley   +1 more source

Occupation du sol et gestion de l'eau: Modélisation prospective en paysage agricole fragmenté [PDF]

open access: yes, 2008
A quoi pourront ressembler les paysages agricoles bretons en 2020-30 ? Cette question, au-delà de son acception esthétique, revêt un intérêt extrêmement important sur le plan environnemental.
Houet, Thomas
core   +2 more sources

Exploring non-adiabaticity to CO reduction reaction through ab initio molecular dynamics simulation [PDF]

open access: yes, 2020
Non-adiabatic chemical reaction refers to the electronic excitation during reactions. This effect cannot be modeled by the ground-state Born-Oppenheimer molecular dynamics (BO-MD), where the electronic structure is at the ground state for every step of ...
Wang, LW, Zheng, F
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Model of hopping dc conductivity via nearest neighbor boron atoms in moderately compensated diamond crystals

open access: yes, 2011
Expressions for dependences of the pre-exponential factor \sigma_3 and the thermal activation energy \epsilon_3 of hopping electric conductivity of holes via boron atoms on the boron atom concentration N and the compensation ratio K are obtained in the ...
A.G. Zabrodskii   +32 more
core   +1 more source

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