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Now showing items 31-40 of 244
Characterization of vertical cracks using lock-in vibrothermography
(2017-09-22)
Esta tesis se centra en la aplicación de la vibrotermografía lock-in para la detección y caracterización dedefectos verticales sumergidos. En esta técnica, la pieza se excita mediante ultrasonidos, que generancalor en los ...
An Extremely Elongated Cloud Over Arsia Mons Volcano on Mars: 2. Mesoscale Modeling
(American Geophysical Union, 2022-10)
In a previous work (Hernandez-Bernal et al., 2021, ) we performed an observational analysis of the Arsia Mons Elongated Cloud (AMEC), which stands out due to its impressive size and shape, quick dynamics, and the fact that ...
In situ recording of Mars soundscape
(Nature, 2022)
Before the Perseverance rover landing, the acoustic environment of Mars was unknown. Models predicted that: (1) atmospheric turbulence changes at centimetre scales or smaller at the point where molecular viscosity converts ...
Geometric optics analysis of inverted graded index fibers
(IOP, 2022)
We derive a general solution based on geometric optics that describes the light propagation properties in multimode optical fibers with inverted refractive index profiles. Using this general solution, we classify rays ...
Convective storms in closed cyclones in Jupiter: (II) numerical modeling
(Elsevier, 2022-11)
On May 31, 2020 a convective storm appeared in one small cyclone in the South Temperate Belt (STB) of Jupiter. The storm, nicknamed as Clyde's Spot, had an explosive start and quickly diminished in activity in a few days. ...
From Quantum Probabilities to Quantum Amplitudes
(MDPI, 2020-12-08)
The task of reconstructing the system’s state from the measurements results, known as the Pauli problem, usually requires repetition of two successive steps. Preparation in an initial state to be determined is followed by ...
Accurate Determination of the Q Quality Factor in Magnetoelastic Resonant Platforms for Advanced Biological Detection
(MDPI, 2018-03)
The main parameters of magnetoelastic resonators in the detection of chemical (i.e., salts, gases, etc.) or biological (i.e., bacteria, phages, etc.) agents are the sensitivity S (or external agent change magnitude per Hz ...
Dehydroxylation processing and lasing properties of a Nd alumino-phosphate glass
(Elsevier, 2022-03-10)
[EN] In this work, we have studied the preparation and properties of an alumino-phosphate glass with composition 13Na2O-13K2O-16BaO-4Al2O3-54P2O5 (mol%). The first part of the work deals with the study of the processing ...
An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
(MDPI, 2013-06)
When it comes to measuring blade-tip clearance or blade-tip timing in turbines, reflective intensity-modulated optical fiber sensors overcome several traditional limitations of capacitive, inductive or discharging probe ...
Optical Fiber Sensors for Aircraft Structural Health Monitoring
(MDPI, 2015-06)
Aircraft structures require periodic and scheduled inspection and maintenance operations due to their special operating conditions and the principles of design employed to develop them. Therefore, structural health monitoring ...