[en] Some problems of controlling qualities about TLD measuring system, such as reading instrument, TL control instrument, anneal over, cooling instrument, calibration source and calibration method et al, were discussed. Some problems of measuring technologies were important but easily neglected when measuring, such as cleaning heating plates and filter slices, controlling anneal temperature and the method of timing for anneal were discussed also. These discuss maybe helpful to those who are interested in TLD's Technology. (authors)

No abstract available

[en] The results of 'Comparison of TLD Measuring for Environment', which were attended by many domestic department in 2005, were introduced in this paper. It can be seen from the measuring results that the deviation is litter than ±10.1% when the estimate value of the nature radiation's kerma is compared to the average value gotten by standard ionization chamber, and the deviation is less than ±16.2% when the estimate value of two groups of TLDs those measuring γ radiation in laboratory is compared to the conventional true value in standard radiation Field. The fading correction and its corresponding calculation method were specially introduced in this paper for improving the accuracy of the environment cumulate kerma. (authors)

[en] More than 6000 personnel are currently being monitored for occupational exposure in CNNC, China. Personnel monitoring is one of the important items of radiation protection. The data of individual dose are not only indispensable for radiation safety assessment but also the basis for radiation protection measures to be taken. Possibly, it could provide basic information for epidemiological studies, optimization procedure of radiation protection (risk/benefit analyses) and medical or legal purposes. Obviously, personnel monitoring and its quality assurance are very significant

[en] This paper introduces the structure and specifications of tritium self-illuminated signs and the radiation dose control standards for it, discusses the measuring methods of radiation performance for bremsstrahlung energy spectrum and surface dose rate of tritium illuminated tube. Experimental measuring results are also given and discussed. (authors)

[en] In this paper, the capture of radiocadmium (Cd(II)) by adsorption onto the titanate nanotube/iron oxide (TNT/IOM) magnetic composite as a function of contact time, pH, ionic strength, foreign cation and anion ions, humic acid (HA) and fulvic acid (FA) was studied using batch technique. The results indicated that the adsorption of Cd(II) onto the TNT/IOM magnetic composite was dependent on ionic strength at pH <9.0, but was independent of ionic strength at pH >9.0. Outer-sphere surface complexation were the main mechanism of Cd(II) adsorption onto the TNT/IOM magnetic composite at low pH values, whereas the adsorption was mainly dominated via inner-sphere surface complexation at high pH values. The adsorption of Cd(II) onto the TNT/IOM magnetic composite was dependent on foreign cation and anion ions at low pH values, but was independent of foreign cation and anion ions at high pH values. A positive effect of HA/FA on Cd(II) adsorption onto the TNT/IOM magnetic composite was found at low pH values, while a negative effect was observed at high pH values. From the results of Cd(II) removal by the TNT/IOM magnetic composite, the optimum reaction conditions can be obtained for the maximum removal of Cd(II) from water. It is clear that the best pH values of the system to remove Cd(II) from solution by using the TNT/IOM magnetic composite are 7.0-8.0. Considering the low cost and effective disposal of Cd(II)-contaminated wastewaters, the best condition for Cd(II) capture by the TNT/IOM magnetic composite is at room temperature and solid content of 0.5 g L^-1. These results are quite important for estimating and optimizing the removal of Cd(II) and related metal ions by the TNT-based magnetic composite. (author)

[en] The compressive creep property of Mg–4Al–RE (AE41) alloys is investigated using a homemade compressive creep device. The microstructure of as-cast and post-crept AE41 alloys is observed by scanning electron microscope (SEM), and the precipitation phases in the alloys are analyzed by X-ray diffraction (XRD) and energy dispersive spectrometry (EDS). The results show that the compressive creep rates of AE41 alloys are decreased with increasing duration in the primary creep stage, and the steady state compressive creep rates are decreased with increasing calcium and strontium concentrations. The steady state compressive creep rate of AECJ411202 alloy is 1.36721×10"−"7 mm/s that is 8.34 times lower than that of AE41 alloy. The poor compressive creep resistance of AE41 alloys is caused by the softening of β-Mg_1_7Al_1_2 phase. The compressive creep resistance of Mg–Al–RE–Ca and Mg–Al–RE–Ca–Sr alloys is improved by the grain refinement, and the granular Al_2Nd, bone (Mg, Al)_2Ca and fish-bone Al_4Sr hindering the dislocation climbing and grain boundary sliding

[en] This research aims to examine the empirical cointegration, long-run and short-run dynamics, and causal relationships between trade openness, environmental regulation, and human capital level in China throughout 1990–2016. Based on the ARDL Bounds Testing method, the empirical results confirmed long-run cointegration between trade openness, environmental regulation, and human capital level. Environmental regulation and trade openness have a significant positive impact on the human capital level, and environmental regulation has a U-shaped effect on human capital accumulation. The Granger causality test results indicate that environmental regulation Granger causes human capital level, the human capital level Granger causes trade openness, and trade openness and environmental regulation have a bidirectional relationship. This research brings new contributions to sustainable development theory.

[en] Development and dosimetric characteristics test for LiF (Mg, Cu, P) glass pipe detector with high stability are given

[en] Photon energy response of Model IDB-2 routine thermoluminescence personal dosimeter and method of optimum compensation are given