Results 11 to 20 of about 767,976 (182)

Visual Behavior in Inline Speed Skating: An Eye‐Tracking Evaluation for Performance Analysis

open access: yesEuropean Journal of Sport Science
This study analyzed oculomotor behavior (fixations and saccades) in 19 competitive inline speed skaters (5 males, 14 females; aged 10–26 years) from the Aragonese Skating Federation (Spain), comparing high‐performance (N1) and intermediate (N2) groups ...
Lucía Magro‐Garbajosa   +2 more
doaj   +2 more sources

The Reactive Extrusion Cationization of Starches as a Novel Physicochemical Surface Modification Method. [PDF]

open access: yesBiopolymers
Native starches from different botanical sources were cationized by reactive extrusion using 3% glycidyltrimethylammonium chloride (GTAC). The process, performed under controlled thermal zones, promoted the incorporation of quaternary ammonium groups onto the starch backbone.
Posada-Vélez MC   +4 more
europepmc   +2 more sources

Bragg gratings and BIO-Bragg-gratings in tapered optical fibers [PDF]

open access: yesEPJ Web of Conferences, 2022
Tapered optical fibres are well-established devices for different applications, in order to exploit nonlinear effects, manage dispersion, excite azimuthal resonances in microresonators (so-called Whispering Gallery Modes).
Delgado-Pinar Martina   +3 more
doaj   +1 more source

Spatially Resolved Monitoring of Drying of Hierarchical Porous Organic Networks [PDF]

open access: yes, 2016
Evaporation kinetics of water confined in hierarchal polymeric porous media is studied by low field nuclear magnetic resonance (NMR). Systems synthesized with various degrees of cross-linker density render networks with similar pore sizes but different ...
Acosta, Rodolfo Hector   +7 more
core   +1 more source

Generation and Characterization of Vector Beams with a Single SLM for Super-Resolution Microscopy [PDF]

open access: yesEPJ Web of Conferences
We present a method to generate vector beams using a single spatial light modulator (SLM) for depletion-based super-resolution microscopy techniques such as STED, RESOLFT, and subtraction microscopy.
Toledo-García Nick   +5 more
doaj   +1 more source

Removal of ciprofloxacin from aqueous solutions using pillared clays [PDF]

open access: yes, 2017
Emerging contaminants in the environment have caused enormous concern in the last few decades, and among them, antibiotics have received special attention.
Baschini, Miria Teresita   +2 more
core   +2 more sources

Thermodynamic Performance of a Brayton Pumped Heat Energy Storage System: Influence of Internal and External Irreversibilities

open access: yesEntropy, 2021
A model for a pumped thermal energy storage system is presented. It is based on a Brayton cycle working successively as a heat pump and a heat engine. All the main irreversibility sources expected in real plants are considered: external losses arising ...
David Pérez-Gallego   +3 more
doaj   +1 more source

Depósito de capas de nitruro de carbono mediante ablación láser

open access: yesRevista de Metalurgia, 1998
Se presenta la preparación de capas finas de nitruro de carbono mediante la ablación de diferentes tipos de blancos (grafito, guanazol) en una atmósfera reactiva de amoniaco utilizando un láser de excímero de ArF (193 nm).
R. Soto   +4 more
doaj   +1 more source

Producción de recubrimientos de fosfato cálcico mediante ablación láser para aplicaciones biomédicas

open access: yesRevista de Metalurgia, 1998
Los fosfatos cálcicos apatíticos se utilizan como recubrimientos para mejorar la fijación de implantes ortopédicos y dentales. La técnica comercial para la producción de estos recubrimientos (plasma-spray) presenta problemas de adherencia y control de ...
M. B. Mayor   +5 more
doaj   +1 more source

Thermodynamics of spherically symmetric black holes in scale-dependent gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this work we extend the first law of thermodynamics to spherically symmetric black hole solutions in the context of scale-dependent gravity. After deriving generalized expressions for both the entropy and energy due to the spatial variation of the ...
P. Bargueño, J. A. Miralles, J. A. Pons
doaj   +1 more source

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