Publications by authors named "R Gijbels"

Objective: To investigate the trends in incidence of alcohol-intoxicated patients who present at the emergency department (ED), as well as the characteristics of these patients.

Methods: Retrospective observational study based on data collected from 2008 until 2019 in two EDs in Leuven, Belgium. As a routine ED procedure, a blood alcohol concentration (BAC) test is ordered for all patients suspected of alcohol use as a primary presenting sign.

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In dc magnetrons the electrons emitted from the cathode may return there due to the applied magnetic field. When that happens, they can be recaptured or reflected back into the discharge, depending on the value of the reflection coefficient (RC). A 2d3v (two-dimensional in coordinate and three-dimensional in velocity space) particle-in-cell-Monte Carlo model, including an external circuit, is developed to determine the role of the electron recapture in the discharge processes.

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A series of cationic, zwitterionic and anionic fluorinated carbocyanine dyes, spin-coated on Si substrates, were measured with time-of-flight static secondary ion mass spectrometry (TOF-S-SIMS) under Ga(+) primary ion bombardment. Detailed fragmentation patterns were developed for all dyes measured. In the positive mode, the resulting spectra showed very intense signals for the precursor ions of the cationic dyes, whereas the protonated signals of the anionic dyes were hardly detected.

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A series of organic dyes and a pharmaceutical are used to study secondary ion yield enhancement by metal deposition. The molecules were dissolved in methanol and spin-casted on silicon substrates. Subsequently, silver or gold was evaporated onto the samples to produce a very thin coating.

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The formation of particles in low-pressure silane discharges has been studied extensively over the last decade. In this paper we try to identify, by numerical simulations, the precursors of the dust formation and we examine the gas-phase reactions leading to larger clusters, and finally to nanometer or micrometer sized particles. A one-dimensional fluid model is used, which incorporates silicon hydrides (Si(n)H(m)) containing up to 12 silicon atoms.

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