On the cover: Measured energy spectra using a portable HPGe detector during about 1,800 sec at two environmental radiation monitoring sites based on an NaI(Tl) detector to compare analysis results of the radioactivity of natural radionuclides in the ground between two detectors. See the article by Yong-Ji et al. on p. 304 for more information.

Operational Radiation Safety

CONTENTS - Vol. 113, No. 4, October 2017

Operational Topics

A New Approach for the Determination of Dose Rate and Radioactivity for Detected Gamma Nuclides Using an Environmental Radiation Monitor Based on an NaI(Tl) Detector
Young-Yong Ji, Chang-Jong Kim, Kyo-Sun Lim, Wanno Lee, Hyon-Sock Chang, and Kun Ho Chung

Considerations for Bioassay Monitoring of Mixtures of Radionuclides
John Klumpp, Tom Waters, and Luiz Bertelli

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