Results 141 to 150 of about 387,179 (261)

Impedance Spectroscopy of Bifurcation Oscillations in S‐Type Self‐Oscillatory Devices

open access: yesAdvanced Physics Research, EarlyView.
Impedance spectroscopy (IS) reveals stability regimes and bifurcation dynamics in S‐type self‐oscillatory devices. By linking nonlinear control theory with frequency‐domain measurements, experimental signatures of oscillations, entrainment, and phase locking are directly identified.
Gonzalo Rivera‐Sierra   +5 more
wiley   +1 more source

Synergetic Combination of Carbon Xerogels, Graphene Oxide and nano‐ZnO for Aqueous and Organic Supercapacitors

open access: yesBatteries &Supercaps, Volume 8, Issue 3, March 2025.
This work proposes the synthesis of carbon‐based nanostructured materials obtained using ZnO as both nanos‐ template and catalysts simultaneously. During the synthesis, GO was used as a stabiliser, preventing the collapse of the 3D structure and improving its properties in terms of capacitance and surface area.
Rusbel Coneo‐Rodríguez   +5 more
wiley   +1 more source

Apuntes de la asignatura Química Física II. Tema 1. Cinética formal: conceptos fundamentales

open access: yes, 2011
Introducción a la cinética química: definición y medida de velocidades de reacción y ecuaciones de ...
Pérez-Jiménez, Ángel J.
core  

Magnetic lipase B from Candida antarctica (CALB) biocatalyst for integrated valorization of tilapia by‐products and biodiesel biorefining

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The immobilization of lipase B from Candida antarctica (CALB) on an amino‐epoxy functionalized magnetic support (Fe3O4‐PEI‐DGEBA) resulted in a highly stable and efficient biocatalyst for biofuel production from tilapia oil. The synthesized support was characterized using scanning electron microscopy, transmission electron microscopy, X‐ray ...
Rafael Leandro Fernandes Melo   +12 more
wiley   +1 more source

QUÍMICA ORGÁNICA AROMÁTICA - FACULTAD DE QUÍMICA

open access: yes, 2003
PROGRAMA DE UNIDAD DE APRENDIZAJE DE QUÍMICA ORGÁNICA AROMÁTICA - FACULTAD DE ...
QUÍMICA
core  

Liquid‐phase oxidation of furfural catalyzed by magnetically separable metal oxide nanoparticles deposited on silica gel

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Oxidation of furfural (FF), a bio‐based platform chemical, was investigated using a range of iron‐, vanadium‐ and iron–zinc‐oxalates supported on silica gel (FeVOx@silica and FeZnOx@silica, respectively) as precursor for FeV@silica and FeZn@silica oxide catalysts and H2O2 as a green oxidant.
Alexander Pokutsa   +2 more
wiley   +1 more source

RETRACTED: Melendez et al. Experimental and DFT Study of the Photoluminescent Green Emission Band of Halogenated (-F, -Cl, and -Br) Imines. <i>Molecules</i> 2019, <i>24</i>, 3304. [PDF]

open access: yesMolecules
Melendez FJ   +8 more
europepmc   +1 more source

QUÍMICA ORGÁNICA ALIFÁTICA - FACULTAD DE QUÍMICA

open access: yes, 2003
PROGRAMA DE UNIDAD DE APRENDIZAJE DE QUÍMICA ORGÁNICA ALIFÁTICA - FACULTAD DE ...
QUÍMICA
core  

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