A5101692825- Laser-induced spectroscopy and plasma
- Analytical chemistry methods development
- Metallurgical Processes and Thermodynamics
- Advanced Fiber Laser Technologies
- Cultural Heritage Materials Analysis
- Spectroscopy and Laser Applications
- Innovation Policy and R&D
- Atomic and Molecular Physics
- Analytical Chemistry and Sensors
- Optical and Acousto-Optic Technologies
- Advanced Measurement and Metrology Techniques
- Photoacoustic and Ultrasonic Imaging
- Library Science and Information Systems
- Laser Material Processing Techniques
- Optical Coatings and Gratings
- ICT Impact and Policies
- Enhanced Oil Recovery Techniques
- Ion-surface interactions and analysis
- Oil and Gas Production Techniques
- Advanced Battery Technologies Research
- European and International Contract Law
- Chemical and Environmental Engineering Research
- Mercury impact and mitigation studies
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear reactor physics and engineering
University of Atlántico
2017-2024
University of Pittsburgh
2023
Universidad de Santiago de Chile
1993
National University of Río Cuarto
1993
Importance In prior monotherapy studies of patients with hypertension, single subcutaneous doses zilebesiran, an investigational RNA interference therapeutic, reduced serum angiotensinogen levels and systolic blood pressure (SBP) at 3 6 months. Objective To evaluate the efficacy safety zilebesiran vs placebo when added to a standard antihypertensive medication. Design, Setting, Participants This phase 2, randomized, prospective, double-blinded trial enrolled adults uncontrolled hypertension...
Abstract Laser diodes (LDs) working in free mode present different types of effects such as shift and broadening the spectral peak, determined by external factors temperature, electric current or mechanical vibrations, which are undesirable when required applications high resolution laser spectroscopy, metrology cooling. To reduce width emission peak a laser, configurations optical setups used, among one most effective is to extend resonator LD use feedback, either with help partially...
In this work, we report estimates of the temperature and electron density titanium plasmas using time-resolved laser-induced breakdown spectroscopy (LIBS) methods results Hartree–Fock relativistic (HFR) calculations Ti II transition probabilities. Plasmas were generated on certified grade-1 samples, with 532-nm laser radiation pulses from a Nd:YAG energies 18, 28, 38, 48 mJ. Spectra recorded delay times between 0.5 6.5 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Abstract This document describes thoroughly the construction of two spectroscopic systems: One system for obtaining fluorescence spectra and another lifetime. The first consists spectrum is constituted by a Czerny-Turner type monochromator, photomultiplier tube (PMT), modulating excitation signal treating filtering fluorescent an electromechanical chopper, lock-in amplifier fast response PMT; plus set lenses samples holder. fluorescein dissolved in ethanol was used as calibration standard,...
Abstract The spectral and electrical diagnostics of plasmas generated by laser were performed using the LIBS technique accompanied with simultaneous measurements signal in perturbations an aluminum plasma laser, submerged electric fields transverse to direction beam produced a parallel flat plates capacitor. In this paper, we show that temperature electron density formed are directly proportional energy deposited on sample. Depending separation plates, analysis shows it decays approximately...
There is a need to develop new materials for proton exchange mem- branes that can operate at higher temperatures and low humidities. Designing evaluating novel membrane using density func- tional theory (DFT) infeasible because of length time scale limitations the method. We have developed deep-learning potential (DP) evaluate double-sided graphanol (DSG), which poten- tial anhydrous conducting material. Our DP was trained on DFT data by employing an active learning approach. com-...
Experiments in atomic physics, spectroscopy, and metrology require the compulsory use of frequency- and/or power-stabilized laser beams. For this purpose, acousto-optic modulators (AOMs) or electro-optic are commonly used. AOMs most widely employed because their ability to not only control frequency amplitude but also manipulate spatial deflection beam. The operation requires stable radio oscillators, which can be implemented using Direct Digital Synthesis (DDS) systems Voltage-Controlled...
Abstract This paper shows the analysis of deviations in wavelength measurements made with a DK-480 monochromator diffraction grating respect to values reported for certified calibration spectral lamp. The radiation emitted by lamp was dispersed using gratings 300, 1200 and 2400 grooves/mm provided monochromator. spectrum contains neutral Mercury Argon lines, which registered photomultiplier tube coupled an amplifier circuit. In this study it applied method least squares results measurements,...
Abstract The acousto-optic modulator is a popular tool in photonic laboratories for amplitude modulation or frequency tuning. Due to the unique feature of modified diffraction, can also serve as key element laser spectroscopy. In this work, characterization an system presented. For beam, diffracted by system, modulators efficiency was optimized based on its vertical positioning, and beams angle position. profiles under are shown up, down, near modulation’s central frequencyIn AOM, light...