A5074922150- Methane Hydrates and Related Phenomena
- Earthquake Detection and Analysis
- Radiation Dose and Imaging
- NMR spectroscopy and applications
- Radioactivity and Radon Measurements
- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Geophysical and Geoelectrical Methods
- Glass properties and applications
- X-ray Diffraction in Crystallography
- Radioactive contamination and transfer
- Seismic Waves and Analysis
- Gas Sensing Nanomaterials and Sensors
- Risk Perception and Management
- Isotope Analysis in Ecology
- Nuclear materials and radiation effects
- Landslides and related hazards
- Spectroscopy and Laser Applications
Babeș-Bolyai University
2021-2025
The Loveland paratype section contains valuable records of the climatic conditions during glacial and interglacial periods across midcontinent North America. Previous studies have focused on developing chronological data for last period, only a few reported ages older loess units. Therefore, aim this study is to refine framework section, especially deposition Loess, using combination state-of-the-art luminescence methods. Three sets optically stimulated (OSL) were obtained by applying...
The present study examines the effect of metamorphism on point defects in quartz. A granite sample with crystallization age ~460 Ma (Albesti granite, Romania) and its metamorphic equivalent were used for analysis. This sill-like granitoid occurs close to a ductile shear zone (locally named Bughea zone) presumed Variscan age; is exposed as relatively undeformed away from well highly strained into mylonitic fabric, when caught zone. Mineralogical differences also observed, exhibiting lower...
Despite being one of the purest minerals, quartz presents different types defects, intrinsic or due to impurities, that might contain important genetic information. Its common occurrence is making it a promising tool for provenance studies. This study explores scanning electron microscopy (SEM) coupled with cathodoluminescence (CL) wavelength resolved spectroscopy investigating luminescence emissions sourced from rocks types, spanning diverse geological ages.All examined samples display two...
Point defects in quartz and their response to irradiation hold geological significance but are not well understood. They can be analyzed using methods like optically stimulated luminescence (OSL), electron spin resonance (ESR), scanning microscopy with cathodoluminescence (SEM-CL). This study examines point a granite sample (~1.4 Ga crystallization age, ~20–23 Ma cooling age) from the Catalina Metamorphic Core Complex, southwestern USA, part of Proterozoic anorogenic granitic...
Quartz optically stimulated luminescence (OSL) sensitivity as well some electron spin resonance (ESR) and cathodoluminescence (CL) signals have been empirically proposed provenance indicators. Sensitivity is defined emitted in response to a given dose per unit mass. While it largely believed be acquired by earth surface processes, recent studies bring evidence that sensitisation processes depend on source geology.Here we combine OSL thermoluminescence (TL), ESR CL analyses understand the...
This study demonstrates the highly sensitive detection of DNA hybridization using commercially available Surface-Enhanced Raman Spectroscopy (SERS) substrates. We functionalized gold nanostructures with thiolated single-stranded adenine (polyA) various lengths (5-20 bases) and investigated their complementary thymine (polyT) strands across different concentrations. was confirmed by significant spectral changes in ring breathing mode at 735 cm-1, highlighting its potential as a key marker for...
Highlights•Excellent agreement was found among the CR-39 detectors by computing concordance correlation coefficient (CCC = 0.99).•Active/passive methods showed substantial 0.95) yearly.•Temporal correction factors vary method/building type, with annual trends showing inconsistencies.•Spring yields optimal indoor radon concentration for residential buildings, whereas autumn and winter workplaces.•Workplaces exhibit notably lower exposure during work hours vs. full day.AbstractEffective...
Abstract The present study aims to identify novel means of increasing the accuracy estimated annual indoor radon concentration based on application temporal correction factors short-term measurements. necessity accurate and more reliable is in high demand, age speed. In this sense, measurements were continuously carried out, using a newly developed smart device accompanied by CR-39 detectors, for one full year, 71 residential buildings located 5 Romanian cities. coefficient variation...