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Kikuchi, Masahiro; Hussain, M. S.*; Morishita, Norio; Ukai, Mitsuko*; Kobayashi, Yasuhiko; Shimoyama, Yuhei*
Spectrochimica Acta, Part A, 75(1), p.310 - 313, 2010/01
An electron spin resonance (ESR) spectroscopic study of radicals induced in irradiated fresh mangoes was performed. Mangoes in the fresh state were irradiated with 
-rays, lyophilized and then crushed into a powder. The ESR spectrum of the powder showed a strong main peak at 
= 2.004 and a pair of peaks centered at the main peak. The main peak was detected from both flesh and skin specimens. This peak height gradually decreased during storage following irradiation. On the other hand, the side peaks showed a well-defined dose-response relationship even at 9 days post-irradiation. The side peaks therefore provide a useful means to define the irradiation of fresh mangoes.
Kikuchi, Masahiro; Hussain, M. S.*; Morishita, Norio; Sakashita, Tetsuya; Funayama, Tomoo; Ukai, Mitsuko*; Shimoyama, Yuhei*; Kobayashi, Yasuhiko
JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 86, 2009/12
When tropical fruits are imported, quarantine treatments are required for preventing plant pests. The irradiation is a choice of the quarantine treatments for tropical fruits in the world. When the irradiation is utilized as the treatment, detection methods are required to endorse the reliability of labels for consumers. To distinguish the irradiated fresh mangoes from non-irradiated ones, radical detection was carried out using ESR. After freeze-drying mangoes, the ESR main peak was observed but the signal intensity was affected by ripeness and period of storage. We found that the existence of side peaks is an effective indicator to detect fresh mangoes irradiated to dose range of quarantine treatment. Since ESR method is able to measure without complicate preparation, this technique is useful to detect the irradiation treatment against a wide variety of foods.
Kikuchi, Masahiro; Hussain, M. S.*; Morishita, Norio; Ukai, Mitsuko*; Shimoyama, Yuhei*; Kobayashi, Yasuhiko
Radioisotopes, 58(12), p.789 - 797, 2009/12
no abstracts in English
Kikuchi, Masahiro; Kobayashi, Yasuhiko; Morishita, Norio; Hussain, M. S.; Ukai, Mitsuko*; Shimoyama, Yuhei*
no journal, ,
no abstracts in English
Kikuchi, Masahiro; Hussain, M. S.; Morishita, Norio; Ukai, Mitsuko*; Shimoyama, Yuhei*; Kobayashi, Yasuhiko
no journal, ,
no abstracts in English
Kikuchi, Masahiro; Hussain, M. S.*; Morishita, Norio; Ukai, Mitsuko*; Kobayashi, Yasuhiko; Shimoyama, Yuhei*
no journal, ,
Andresz, S.*; Betos, C.*; Ha, W.-H.*; Hamida, T.*; Hussain, B. S.*; Kabrt, F.*; Nusrat, O.*; Michaelidesova, A.*; Lima Thiago V. M.*; Movsisyan, N.*; et al.
no journal, ,
Since its establishment in 2018, the Young Generation Network (YGN) has been dedicated, with support of the International Radiation Protection Association (IRPA), to a variety of activities to promote communication, collaboration and professional development of students, young professionals and scientists in radiation protection and its allied fields. This presentation will first report on the activities performed from the middle of 2018 to 2022, with highlights on some important events, collaboration and publications. The discussion and insight obtained from each activity will be summarized and used to inform how the IRPA YGN will aim to achieve its on-going activities and continue to follow the ways paved in the Strategic Agenda 2022-2024 and despite the very specific challenges faced by a "young generation network". Namely, running international surveys (for example, on the usage of social media in radiation protection, or on the long-term consequences of the COVID-19 pandemic), engaging national YGNs (for example in contest and discussion about the future of the radiation protection profession), extending the network, finding new relationships with networks with an interest in the young generation and participation in (remote) events will be aspired for.
Kikuchi, Masahiro; Hussain, M. S.*; Morishita, Norio; Kobayashi, Yasuhiko; Ukai, Mitsuko*; Shimoyama, Yuhei*
no journal, ,
no abstracts in English
Kikuchi, Masahiro; Morishita, Norio; Kobayashi, Yasuhiko; Hussain, M. S.*; Ukai, Mitsuko*; Ogawa, Hideyuki*; Shimoyama, Yuhei*
no journal, ,
no abstracts in English
