Author: "Tuo Xianguo" / Journal: energy procedia - Searchworks@Jio Institute Digital Library Search Results

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Start Over Author "Tuo Xianguo" Journal energy procedia

Author: Li, Zhe, Tuo, Xianguo, Leng, Yangchun, and Liu, Mingzhe
Abstract: Abstract: The paper studies the adsorption features of 239Pu in phyllitic slate and clay media through static experiment method. The two different geo-media were collected from a site for disposing very low level waste (VLLW) as experimental samples. Experimental results have shown that an adsorption equilibrium time of 239Pu in phyllitic slate and clay is approximately 10 days, and the adsorption coefficient (Kd) B Bvalues of phyllitic slate and clay are about 6000ml/g and 2700ml/g, respectively. The experimental result of particle size effect indicates when adsorption of plutonium in particle samples increases, the KBdB values of these two geo-media increase while the particles decrease in size. And the experimental impact on aqueous phase pH value reveals that Kd of 239Pu in creases at higher aqueous phase pH value, illustrating stronger adsorption capacity. Experimental data are also measured through the curve fitting, KBdB values are thus obtained theoretically. [Copyright &y& Elsevier]
Published: 2013
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Author: Tuo Xianguo, Wang Honghui, Hao Shu-li, and Xi Dashun
Subjects: Accuracy and precision, Measure (data warehouse), Engineering, alpha particles, STM32F, radioaction activity, business.industry, Acoustics, LARD, Airflow, Detector, Residual, Microcontroller, Energy(all), Calibration, Electronic engineering, Sensitivity (control systems), business
Abstract: The LRAD-based monitor was designed to detect the residual contamination of the equipment that needs to be efficiently monitored .The monitor measures the current created by the ions which are generated by the interact ion of alpha particles with air and which can be transported over significant distances (several meters) in an airflow generated by a small fan. The STM32F10x microcontroller was employed in building the hardware platform to achieve high-precision micro-current measurements. The detector can measure the small electric current of ions up to the level of fA and the sensitivity of this detector is about 5.29307fA/Bq. Some problems are discussed and put forward in the paper such as how to measure the radiation activity by experimental calibration, and how to improve the measurement accuracy of micro-current, and so on.
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