Results 21 to 30 of about 87,928 (172)

On complementable operators in the sense of T. Ando [PDF]

open access: yes, 2020
Consider an operator A :H→K between Hilbert spaces and closed subspaces S ⊂ H and T ⊂ K. If there exist projections E on H and F on K such that R(E) =S, R(F) =T and AE=F∗A then A is called (S, T)-complementable.
Arias, Maria Laura   +2 more
core   +1 more source

Effect of pH and nanoclay content on the morphology and physicochemicalproperties of soy protein/montmorillonite nanocomposite obtained byextrusion [PDF]

open access: yes, 2018
The present work attempts to clarify the influence of montmorillonite nanoclay content and pH on the me-chanical properties of extruded soy protein nanocomposites.
Félix Ángel, Manuel   +4 more
core   +1 more source

Modelo Didáctico en el Proceso Enseñanza – Aprendizaje en Nivel Superior

open access: yesEduser, 2023
El propósito principal de la investigación fue crear un enfoque educativo para facilitar el aprendizaje de la física en un curso de mecánica a nivel universitario, apoyado en la utilización de recursos tecnológicos y enfoques didácticos activos y ...
Donald Ariel Hernández Muñoz   +1 more
doaj   +1 more source

An alternative methodology to predict aging effects on the mechanical properties of glass fiber reinforced cement (GRC) [PDF]

open access: yes, 2012
The effect of three different aging methods (immersion in hot water, freeze–thaw cycles and wet–dry cycles) on the mechanical properties of GRC were studied and compared.
Enfedaque Díaz, Alejandro   +2 more
core   +3 more sources

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

open access: yesAdvanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil   +14 more
wiley   +1 more source

Nuevas tendencias de andamios en los procedimientos regenerativos endodónticos. Revisión bibliográfica

open access: yesOdous Científica, 2021
La regeneración endodóntica (RE) se basa en el concepto de ingeniería tisular para restaurar el sistema de conductos a un estado saludable, buscando el desarrollo radicular continuo y del tejido circundante, e involucra componentes que incluyen células ...
Diana Fernández, Liliana Jiménez
doaj   +1 more source

Bayesian Optimization Guiding the Experimental Mapping of the Pareto Front of Mechanical and Flame‐Retardant Properties in Polyamide Nanocomposites

open access: yesAdvanced Intelligent Discovery, EarlyView.
Bayesian optimization enabled the design of PA56 system with just 8 wt% additives, achieving limiting oxygen index 30.5%, tensile strength 80.9 MPa, and UL‐94 V‐0 rating. Without prior knowledge, the algorithm uncovered synergistic effects between aluminum diethyl‐phosphinate and nanoclay.
Burcu Ozdemir   +4 more
wiley   +1 more source

Proyecto integrador, como generador de competencias y resultados de aprendizaje

open access: yesPensamiento Americano, 2022
Introducción: El proyecto integrador (P.I.) se viene posicionando en las Instituciones de Educación Superior como la herramienta pedagógica de alta calidad que permite establecer por un lado el proceso de investigación formativa ...
Patricia Rodriguez Parra   +1 more
doaj   +1 more source

Poly-Harmonic Distortion Model Extraction in Charge-Controlled One-Port Devices [PDF]

open access: yes, 2017
A charge-controlled, one-port device is used to describe and discuss the extraction procedure of a Poly-Harmonic Distortion (PHD) model in detail. For this case, both voltage and current waveforms are shown to be enough to fully characterize the PHD ...
Camacho-Peñalosa, Carlos   +2 more
core  

Home - About - Disclaimer - Privacy