Welcome | TCDRS
Since 1967, counties and districts in Texas have trusted TCDRS to provide retirement, disability and survivor benefits. From county and district employers to our members and retirees, we’re proud to provide a plan that’s as strong as the members it benefits. For Members.
Performance of portable TDCR systems developed at LNE-LNHB
2022年7月1日 · In this paper, we will present the newly developed portable TDCR liquid scintillation measurement systems. Two kinds of devices have been developed and designed at LNE-LNHB and built using fused deposition modelling (FDM) 3D printing: a mini-TDCR (25 cm diameter, 10 cm height) and a micro-TDCR (16 cm diameter, 10 cm height).
A review of the triple-to-double coincidence ratio (TDCR) method …
2003年5月1日 · The triple-to-double coincidence ratio (TDCR) method is a fundamental method in liquid scintillation counting (LSC) developed for determination of the massic activity of pure β - and pure electron capture (EC) emitters in solution.
Triple Coincidence Applications | Hidex
The TDCR method has been originally developed for the direct determination of the absolute activities of β- and EC-decaying radionuclides in liquid scintillator medium. TDCR combines experimental data with theoretical calculations of the detector efficiency.
Development of a portable TDCR system at NIM, China
2022年9月1日 · In order to meet the demand of on-site measurement for radionuclides, a portable liquid scintillation TDCR system was developed at National Institute of Metrology (NIM), China. The system consists small size TDCR counter for the measurement of liquid scintillation sources, and digital electronics for pulse signal processing.
Performance Evaluation of FPGA-based Standalone, Portable TDCR …
2024年5月3日 · The liquid scintillation counting based triple to double coincidence ratio (TDCR) method is a widely employed, direct activity determination technique to standardize pure beta emitters. An “FPGA-based standalone, portable TDCR system” is developed for absolute activity measurement of pure beta-emitting radionuclides.
TDCR Cherenkov counting for determining - Springer
2024年8月9日 · This paper presents the development of a triple-to-double coincidence ratio (TDCR) Cherenkov counting method for quantifying blood 90 Y activity. The impact of heating temperature and the quantities of nitric acid and H 2 O 2 on wet oxidation of blood were studied for rapid sample preparation.
A review of the triple-to-double coincidence ratio (TDCR
This paper gives a review of the development of the triple-to-double coincidence ratio (TDCR) method for standardizing pure beta- and pure electron capture (EC)-radionuclides. The initial idea of Schwerdtel and practical realization and elaboration of the TDCR method by Pochwalski is …
Liquid scintillation counting for determination of radionuclides in ...
2018年10月17日 · Unlike external standard methods, TDCR is an universal method applicable for both chemical and color quenching, for aqueous and organic samples and for different cocktails and range of isotopes. In TDCR based LSA, an external …
Hidex 300 SL | Hidex
Absolute activity counting with TDCR technology. The detector with 3 PMTs enable triple-to-double coincidence ratio counting TDCR, which is an absolute counting method for obtaining counting efficiency of the samples without external or internal standard sources.
- 某些结果已被删除