Published in Laser Physics
In this work, we present a modified setup of the time of flight (TOF) mass spectrometer. It consists of a laser ablation source, and a Q-switched Nd:YAG laser (532 nm, 100 mJ, 7 ns) integrated with a linear TOF mass spectrometer coupled with an electrostatic energy analyzer (EEA). Ions are detected by a channeltron electron multiplier assembled wit...
Published in Journal of forensic sciences
Analogs of non-fentanyl novel synthetic opioids (NSO) with modifications that fall outside of established structure-activity relationships (SARs) for that class of drugs create the question whether or not it should be considered an analog, as defined by 21 U.S.C. §802(32)(A), which is important for its inclusion in the US system of drug scheduling....
A prototype of gamma imager system has been developed for detecting fuel rod deformations, based on the WidePIX hybrid pixel detector, associated with a collimator. The WidePIX detector used in the frame of these developements is made of 2×5 Timepix devices hybridized with a 1 mm-thick cadmium telluride semiconductor. A specific collimator was desi...
Published in Strojnícky časopis - Journal of Mechanical Engineering
The aim of the article is to study the influence of the water content in the epoxy resin on the mechanical properties of the result laminate. The mechanism of resin contamination by air humidity is considered. The NIR spectrometry method was chosen to monitor the water content in the resin. The mechanical strength parameters of the laminate created...
Published in Frontiers in Analytical Science
Published in Metrologia
Photon emission intensities of radionuclides, i.e. the number of emitted photons per decay, are the single most important decay data when the photon spectrometry technique is employed in ionizing radiation metrology. However, their precise measurement is problematic because they are usually determined by photon spectrometry with spectrometers havin...
Background: Mainly because of its long half-life and despite its scientific relevance, spectroscopic measurements of 176Lu beta decays are very limited and lack formulation of shape factors. Direct measurement of its Q-value is also presently unreported. In addition, the description of forbidden decays provides interesting challenges for nuclear th...
Published in Frontiers in Ecology and Evolution
Feather quality in birds is considered an honest signal of individual health as feather appearance and function depend on an individual’s ability to maintain them. In addition to flight and insulation, feathers are essential for social interactions and sexual selection in the form of visual signals. Airborne particulate matter (PM) can accumulate o...
Published in Frontiers in Psychiatry
Introduction This study aimed to evaluate portable functional near-infrared spectroscopy (fNIRS) device as an adjunct diagnostic tool in Vietnam to assess hemodynamics when people with schizophrenia and healthy controls performed cognitive tasks. Methods One hundred fifty-seven participants were divided into schizophrenia (n = 110) and healthy cont...
This work presents an investigation on the non-uniformity of the response of the photocathode of two photomultiplier tubes (PMTs) and its potential influence on the results of scintillation measurements. An experimental system was developed which allows studies of the non-uniformity of the photocathode response and its influence on the shape of alp...
