Experiences in the Determination of Activity in Thorium Contaminated Materials in Working Areas, using Gamma Spectrometer Measurements, from the Viewpoint of Practical Radiation Protection
Experiences in the Determination of Activity in Thorium Contaminated Materials in Working Areas, using Gamma Spectrometer Measurements, from the Viewpoint of Practical Radiation Protection
Provided herein are compounds of the formula (I):
as well as pharmaceutically acceptable salts thereof, wherein the substituents are as those disclosed in the specification. These compounds, and the pharmaceutical compositions containing them, are useful for the treatment of metabolic diseases and disorders such as, for example, type II diabetes mellitus.
Experiences in the Determination of Activity in Thorium Contaminated Materials in Working Areas, using Gamma Spectrometer Measurements, from the Viewpoint of Practical Radiation Protection
作者:R. Kreh、J. Stainer
DOI:10.1093/oxfordjournals.rpd.a006645
日期:2001.10.1
In industrial processes, classification and clearance of thorium contaminated material is often a time problem. Short-term decisions have to be made about acceptance limits, industrial safety as the workers are in contact with the contaminated material, and the environmental aspect regarding the disposal of the wastes. The use of gamma ray spectrometry measurements is an easy method to estimate the level of activity in materials. Under the precondition of equilibrium of activity within the thorium decay chain, which can be assumed only with knowledge of the materials' history, adequate results can be produced in a reasonable time. The advantages of gamma ray spectrometry are the low investment and operational costs, simple sample preparation, and a system that is relatively quick and easy to operate.