A5110709355- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Atomic and Subatomic Physics Research
- Thermography and Photoacoustic Techniques
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Photoacoustic and Ultrasonic Imaging
- Electrical and Bioimpedance Tomography
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Body Composition Measurement Techniques
- Laser Material Processing Techniques
- Chalcogenide Semiconductor Thin Films
- Gastroesophageal reflux and treatments
- Spectroscopy Techniques in Biomedical and Chemical Research
- Gastrointestinal motility and disorders
- Advanced Semiconductor Detectors and Materials
- Open Education and E-Learning
- Social impacts of COVID-19
- Cerebrovascular and genetic disorders
- RNA Interference and Gene Delivery
Universidad Laica Vicente Rocafuerte de Guayaquil
2024
Fundación Universitaria de Ciencias de la Salud
2023
University of Münster
2017-2021
Universidad Tecnológica de Panamá
2020
Universidad de Guanajuato
1993-2017
University of Castilla-La Mancha
2007
University of California, Los Angeles
1990-2001
Benemérita Universidad Autónoma de Puebla
1998-1999
University of Toronto
1995-1997
European Organization for Nuclear Research
1990-1996
From photoacoustic (PA) experiments we determine the nonradiative carrier lifetime in direct band-gap semiconductors. We use Rosencwaig and Gerscho model to calculate PA signal semiconductors taking into account distinction between non-radiative radiative lifetimes. have assumed that for our high quality crystalline samples, main contribution processes comes from CHCC CHSH Auger recombination n p-type materials, respectively. For GaAs, InSb GaSb experimental data obtained by means of an open...
Using the open photoacoustic cell technique we analyze, for a polycrystal CdTe/glass system, dependence upon signal phase of both rear and front semiconductor carrier surface velocities bulk recombination time.
In this paper we study the surface recombination velocity of GaAs by means photoacoustic technique (PA). By fitting experimental frequency dependence PA signal phase were able to evaluate parameter. The experiment was carried out in samples prepared liquid epitaxy and doped with different concentrations Ge. It is shown that sensitive changes states originated doping concentration levels it demonstrated gives a promised non-invasive non-destructive method measure velocity.
A novel infrared photothermal radiometric deep-level transient spectroscopy (PTR-DLTS) has been developed for semiconductor noncontact characterization and applied to GaAs wafer diagnostics. The technique is based on rate-window detection combined with temperature ramping. Unlike other methodologies, PTR-DLTS should be easily implemented remotely on-line or off-line impurity/electronic defect diagnostics enjoys high spectral peak separation spatial resolution limited only by the pump laser...
ASML is committed to develop high power EUV source technology for use in lithography high-volume-manufacturing (HVM) of semiconductors. A stable dose controlled Laser-Produced-Plasma (LPP) has been successfully developed and introduced using a CO2 laser small tin (Sn) droplets.
Este trabajo expone la experiencia educativa de un grupo docentes carrera Educación Inicial Universidad Nacional (UNAE), durante el período académico del segundo semestre 2022, en las asignaturas correspondientes a práctica y cátedra séptimo ciclo (Inclusión, diversidad e interculturalidad instituciones educativas Diseño desarrollo procesos enseñanza personalizada: inclusión infantil Inicial), donde realizaron varias actividades que promovieron acercamiento directo estrategias didácticas...
A través de la experiencia vida capataz del taller artesanal CEMA-Chile en La Junta, Región Aysén, se analiza el rol esta fundación las mujeres campesinas territorio austral chileno durante dictadura cívico-militar, considerando relación entre ruralidad, maternidad y desde historia oral social con enfoque género. Como hipótesis plantea que ideal mujer promovido a sus Centros Madres talleres artesanales alejaba completamente realidad mundo rural austral, pero presencia institución zona...
We present a system for monitoring the motion of pill electrode in esophageal electrocardiography, which consists on measuring electrical impedance bipolar electrode. have found that is correlated to breathing and cardiac activity. Therefore, because its main noise source, will be ECG. The signal measured can used further reduce i n h igh-resolution electrocardiography.
Con la evolución del Internet, hay una gran cantidad de información presente en web como lo son las opiniones los usuarios o consumidores sobre diversos contextos ya sea para expresar su conformidad inconformidad un producto servicio recibido, así opinión artículo comprado gestión que realiza alguna persona. Debido a opiniones, comentarios y sugerencias usuarios, es muy importante explorar, analizar organizar sus puntos vista tomar mejores decisiones. El análisis sentimientos tarea...
By means of a technique based on thermal process detection, namely photoacoustics. the correlation between surface recombination veloc~ty in cadmium telluride and rouzhness is explored. This achieved through investi_gation photoacoustic signal as function modulation frequency heat-transmission configuration use atomic force microscopic analysis.
Nowadays, the gold technique in gastric evaluations still is scintigraphy spite of ionization radiation dose per patient undergoing this procedure. Gastro images with ultrasound are controversial, because stomach a hollow cavity filled gas basal conditions or fast state. Fortunately, food recommended motility and emptying assessment. So, lack air contributes kind study recordings excellent by ultrasound. In study, digital image processing presented. Whole automated routine implemented...
Several research groups have proposed the electrical impedance tomography (EIT) in order to analyse lung ventilation. With use of 16 electrodes, EIT is capable obtain a set transversal section images thorax. In previous works, we obtained an alternating signal terms corresponding respiration from images. Then, transform those changes into measurable volume calibration equations has been obtained. However, technique still expensive attend outpatients basics hospitals. For that reason, propose...