Search Results - "Lopes, C. N"
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Single-Shot Multi-keV X-Ray Absorption Spectroscopy Using an Ultrashort Laser-Wakefield Accelerator Source
Published in Physical review letters (17-12-2019)“…Single-shot absorption measurements have been performed using the multi-keV x rays generated by a laser-wakefield accelerator. A 200 TW laser was used to drive…”
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2
Ultrafast Imaging of Laser Driven Shock Waves using Betatron X-rays from a Laser Wakefield Accelerator
Published in Scientific reports (20-07-2018)“…Betatron radiation from laser wakefield accelerators is an ultrashort pulsed source of hard, synchrotron-like x-ray radiation. It emanates from a centimetre…”
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3
Observation of Laser Power Amplification in a Self-Injecting Laser Wakefield Accelerator
Published in Physical review letters (22-06-2018)“…We report on the depletion and power amplification of the driving laser pulse in a strongly driven laser wakefield accelerator. Simultaneous measurement of the…”
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4
Mechanisms to control laser-plasma coupling in laser wakefield electron acceleration
Published in Physical review. Accelerators and beams (01-10-2022)“…Experimental results, supported by precise modeling, demonstrate optimization of a plasma-based injector with intermediate laser pulse energy (<1J),…”
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5
Effect of laser intensity on fast-electron-beam divergence in solid-density plasmas
Published in Physical review letters (11-01-2008)“…Metal foil targets were irradiated with 1 mum wavelength (lambda) laser pulses of 5 ps duration and focused intensities (I) of up to 4x10;{19} W cm;{-2},…”
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6
Exploring Mannosylpurines as Copper Chelators and Cholinesterase Inhibitors with Potential for Alzheimer's Disease
Published in Pharmaceuticals (Basel, Switzerland) (30-12-2022)“…Alzheimer's Disease (AD) is characterized by a progressive cholinergic neurotransmission imbalance, with a decrease of acetylcholinesterase (AChE) activity…”
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7
Effects of rumen-protected polyunsaturated fatty acid supplementation on reproductive performance of Bos indicus beef cows
Published in Journal of animal science (01-12-2009)“…Five experiments evaluated the effects of rumen-protected PUFA supplementation on reproductive function of Bos indicus beef cows. In Exp. 1, 910 lactating…”
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8
Generation of Naphthoquinone Radical Anions by Electrospray Ionization: Solution, Gas-Phase, and Computational Chemistry Studies
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (02-06-2011)“…Radical anions are present in several chemical processes, and understanding the reactivity of these species may be described by their thermodynamic properties…”
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Application of the Atoms in Molecules Theory and Computational Chemistry in Mass Spectrometry Analysis of 1,4-Naphthoquinone Derivatives
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (17-11-2011)“…Mass spectrometry analysis of 2-(acylamino)-1,4-naphthoquinone derivatives was carried out using electrospray ionization ion source in combination with tandem…”
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10
Strategic supplementation of calcium salts of polyunsaturated fatty acids to enhance reproductive performance of Bos indicus beef cows
Published in Journal of animal science (01-10-2011)“…Five experiments evaluated the effects of supplemental Ca salts of PUFA on reproductive function of Bos indicus beef cows. In Exp. 1, nonlactating and…”
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11
Bright x-ray radiation from plasma bubbles in an evolving laser wakefield accelerator
Published in Physical review. Accelerators and beams (01-06-2020)“…We show that the properties of the electron beam and bright x rays produced by a laser wakefield accelerator can be predicted if the distance over which the…”
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12
Characterization of laser wakefield acceleration efficiency with octave spanning near-IR spectrum measurements
Published in Physical review. Accelerators and beams (01-10-2022)“…We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser…”
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13
Gas-phase dissociation of 1,4-naphthoquinone derivative anions by electrospray ionization tandem mass spectrometry
Published in Journal of mass spectrometry. (01-08-2009)“…Gas-phase dissociation pathways of deprotonated 1,4-naphthoquinone (NQ) derivatives have been investigated by electrospray ionization tandem mass spectrometry…”
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14
Effects of intravenous glucose infusion and nutritional balance on serum concentrations of nonesterified fatty acids, glucose, insulin, and progesterone in nonlactating dairy cows
Published in Journal of dairy science (01-07-2010)“…The objective of this study was to evaluate serum concentrations of nonesterified fatty acids, glucose, insulin, and progesterone in nonlactating dairy cows…”
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15
What Is the Best Treatment before Bariatric Surgery? Exercise, Exercise and Group Therapy, or Conventional Waiting: a Randomized Controlled Trial
Published in Obesity surgery (01-03-2017)“…Objective This trial’s objective was to investigate the effect of an exercise program with and without cognitive-behavioral therapy (CBT), compared by a…”
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16
Laser-wakefield accelerators as hard x-ray sources for 3D medical imaging of human bone
Published in Scientific reports (18-08-2015)“…A bright μm-sized source of hard synchrotron x-rays (critical energy E crit > 30 keV) based on the betatron oscillations of laser wakefield accelerated…”
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17
Multi-GeV Electron Acceleration in Wakefields Strongly Driven by Oversized Laser Spots
Published in Physical review letters (10-05-2024)“…Experiments were performed on laser wakefield acceleration in the highly nonlinear regime. With laser powers P<250 TW and using an initial spot size larger…”
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18
Fragmentation studies of synthetic 2-acylamino-1,4-naphthoquinones by electrospray ionization mass spectrometry
Published in Journal of mass spectrometry. (01-09-2006)“…We report here the fragmentation mechanism for five 2‐acylamino‐1,4‐naphthoquinone derivatives using electrospray ionization tandem mass spectrometry…”
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19
Chitosan–cyanuric chloride intermediary as a source to incorporate molecules—Thermodynamic data of copper/biopolymer interactions
Published in Thermochimica acta (10-02-2009)“…The reaction of a chitosan–cyanuric chloride (ChC) intermediate with ethylenediamine (d) and diethylenetriamine (t) molecules yielded the new biopolymers ChCd…”
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20
Laser pulse frequency up-shifts by relativistic ionization fronts
Published in Europhysics letters (01-05-2004)“…A multi-terawatt, ultra-short laser pulse was used to create a large, well-defined relativistic ionization front, and the collision of a probe laser pulse with…”
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