Treatment with x-rays increased the intensity of color of natural amethyst up to fivefold, and an electron paramagnetic resonance spectrum was detected. The intensity of the spectrum was proportional ...
Color centers in amethyst are produced by the action of ionizing radiation on precursor centers that arise from substitution of Fe(+3) for Si(+4) in the alpha-quartz structure. These Fe(+3) centers pr...
Abstract
Amethyst is an expert system to assist with vibration based condition monitoring of rotating machinery. Vibration patterns are collected from machinery such as pumps, fans, motors and genera...
The main dosimetric characteristics of amethyst, Brazilian natural semi-precious stone, were investigated in this work, in order to verify the possibility of its use for gamma-radiation detection usin...
Abstract
The aim of the AMETHYST (AutoMatic Event auTHentication SYSTems) project is to encourage the development of a high performance perimeter detection system which combines Video Motion Detectio...
Abstract
The aim of the AMETHYST (AutoMatic Event auTHentication SYSTems) project is to encourage the development of a high performance perimeter detection system which combines Video Motion Detectio...