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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
Leonard A. Jonas, Victor R. Deitz, J. B. Romans
Nuclear Technology | Volume 48 | Number 1 | April 1980 | Pages 77-83
Technical Paper | Radioisotope | doi.org/10.13182/NT80-A32450
Articles are hosted by Taylor and Francis Online.
The effect of outdoor weathering of impregnated charcoal beds used for the trapping and retention of methyl 127I vapor was studied under various dynamic flow conditions. The data showed that the first or inlet segment of the bed suffered the greatest degradation in its role as a guard layer for the remaining segments of the bed. Test results were analyzed in terms of the parameters of adsorption capacity and adsorption and desorption rate constants. As was expected, the desorption rate constant was much smaller than the adsorption rate constant. The dimensionless ratio of the adsorption to the desorption rate constant can be considered as a retentivity index for any particular charcoal.
