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Journal Articles

Development of training course on non-destructive assay of nuclear material for Asian region, 2; Development of lectures and exercises on gamma-ray measurement

Yamamoto, Masahiko; Kono, Soma; Saegusa, Yu; Kuno, Takehiko; Sekine, Megumi; Inoue, Naoko; Noro, Naoko; Rodriguez, D.; Yamaguchi, Tomoki; Stinett, J.*

Proceedings of INMM & ESARDA Joint Annual Meeting 2023 (Internet), 10 Pages, 2023/05

The gamma-ray measurement part of the Non-Destructive Assay (NDA) course of safeguards and nuclear material accountancy was developed to focus on gamma-ray measurement allotting two days out of five days. The lectures on the basic characteristics and detection methods and mechanism of gamma-ray detectors were provided as e-learnings which were developed. The part for hands-on exercises were implemented in JAEA facility. Participants have set up each gamma-ray detector, and performed measurements of uranium and the other gamma-ray emitting nuclides. Also, uranium-235 enrichment measurements have been performed. In addition, the participants trained with a handheld gamma-ray spectrometer, HM-5, that is popular for IAEA safeguards as the preparation in the measurement exercise of fresh fuel assemblies in JRR-3, a research reactor facility of JAEA. This paper reports on the development, implementation, and feedback from participants on gamma-ray measurement part of the NDA course.

Journal Articles

Composite with a glassy nonporous coordination polymer enhances gas adsorption selectivity

Zheng, X.*; Kato, Masaru*; Uemura, Yohei*; Matsumura, Daiju; Yagi, Ichizo*; Takahashi, Kiyonori*; Noro, Shinichiro*; Nakamura, Takayoshi*

Inorganic Chemistry, 62(3), p.1257 - 1263, 2023/01

 Times Cited Count:0 Percentile:63.13(Chemistry, Inorganic & Nuclear)

Journal Articles

ISCN/JAEA-IAEA online SSAC training development

Kawakubo, Yoko; Stevens, R.*; Pickett, S.*; Sekine, Megumi; Noro, Naoko; Inoue, Naoko

Proceedings of INMM & ESARDA Joint Virtual Annual Meeting (Internet), 10 Pages, 2021/08

Journal Articles

A Prospect of development and use of the virtual tour of the physical protection exercise field

Nakagawa, Yosuke; Sukegawa, Hidetoshi; Naoi, Yosuke; Inoue, Naoko; Noro, Naoko; Okuda, Masahiro

Dai-41-Kai Nihon Kaku Busshitsu Kanri Gakkai Nenji Taikai Kaigi Rombunshu (Internet), 4 Pages, 2020/11

The physical protection exercise field, a facility equipped with various types of equipment such as sensors, cameras and fences that are used at nuclear facilities, is an effective tool for training on nuclear security at ISCN/JAEA, if it is carried out in-person. Due to the COVID-19 pandemic, the virtual tour of the facility is developed for the online training courses so that they could be more effective. The article explains the initial development of the virtual tour with some improvement inspired by using it on some occasions as well as a prospect of effective use of the virtual tour based on its characteristics.

Journal Articles

Good practices on HRD support activities of ISCN

Naoi, Yosuke; Hori, Masato; Noro, Naoko

Proceedings of INMM 61st Annual Meeting (Internet), 9 Pages, 2020/07

As a COE of HRD on nuclear non-proliferation and nuclear security in the Asian region, good practices during the nine years since its establishment in 2010 will be presented.

Journal Articles

How different is the core of $$^{25}$$F from $$^{24}$$O$$_{g.s.}$$ ?

Tang, T. L.*; Uesaka, Tomohiro*; Kawase, Shoichiro; Beaumel, D.*; Dozono, Masanori*; Fujii, Toshihiko*; Fukuda, Naoki*; Fukunaga, Taku*; Galindo-Uribarri, A.*; Hwang, S. H.*; et al.

Physical Review Letters, 124(21), p.212502_1 - 212502_6, 2020/05

 Times Cited Count:14 Percentile:74.77(Physics, Multidisciplinary)

The structure of a neutron-rich $$^{25}$$F nucleus is investigated by a quasifree ($$p,2p$$) knockout reaction. The sum of spectroscopic factors of $$pi 0d_{5/2}$$ orbital is found to be 1.0 $$pm$$ 0.3. The result shows that the $$^{24}$$O core of $$^{25}$$F nucleus significantly differs from a free $$^{24}$$O nucleus, and the core consists of $$sim$$35% $$^{24}$$O$$_{rm g.s.}$$, and $$sim$$65% excited $$^{24}$$O. The result shows that the $$^{24}$$O core of $$^{25}$$F nucleus significantly differs from a free $$^{24}$$O nucleus. The result may infer that the addition of the $$0d_{5/2}$$ proton considerably changes the neutron structure in $$^{25}$$F from that in $$^{24}$$O, which could be a possible mechanism responsible for the oxygen dripline anomaly.

Journal Articles

Incorporation of multinuclear copper active sites into nitrogen-doped graphene for electrochemical oxygen reduction

Kato, Masaru*; Muto, Marika*; Matsubara, Naohiro*; Uemura, Yohei*; Wakisaka, Yuki*; Yoneuchi, Tsubasa*; Matsumura, Daiju; Ishibara, Tomoko*; Tokushima, Takashi*; Noro, Shinichiro*; et al.

ACS Applied Energy Materials (Internet), 1(5), p.2358 - 2364, 2018/05

 Times Cited Count:11 Percentile:43.85(Chemistry, Physical)

Journal Articles

Good practices in provision of nuclear security training courses at the integrated support center for nuclear nonproliferation and nuclear security

Naoi, Yosuke; Noro, Naoko; Kobayashi, Naoki; Robertson, K.

Proceedings of INMM 58th Annual Meeting (Internet), 10 Pages, 2017/07

More than six years have passed since the Integrated Support Center for Nuclear Nonproliferation and Nuclear Security (ISCN) was established under the Japan Atomic Energy Agency (JAEA) in December 2010 and started its activities, in response to the commitment of Japan at the Nuclear Security Summit in Washington D.C.. ISCN has been vigorously involved in the capacity building assistance on nuclear nonproliferation (safeguards) and nuclear security, mainly in the Asian region. It has provided 120 training courses with 3,257 participants in total up to January 2017. ISCN has been playing a major role in strengthening nuclear nonproliferation and nuclear security in this region, and this can be considered as one of the great results of the Nuclear Security Summit process. Particularly, ISCN's nuclear security training courses, primarily two-week course on physical protection of nuclear material and nuclear facilities, have been building up its own instructors in cooperation with the U.S. Department of Energy/National Nuclear Security Administration and Sandia National Laboratories. It has also been providing the courses with emphasis on universalization of the IAEA INFCIRC/225/Rev.5 and nuclear security culture. Furthermore, ISCN has provided the training courses for the experts in Japan making the best use of our knowledge and experience of organizing international training courses. The total number of the Japanese experts participating in ISCN courses reached to more than 1200. In addition to that ISCN conducted a special lecture on nuclear security culture at the thirteen-nuclear power plant (NPP) sites in Japan, and three thousand workers at NPPs joined the lecture. This shows that the ISCN has been recognized as an expert organization of nuclear security training support in Japan. This paper will describe the good practices at ISCN through six years activities mainly the progress in our nuclear security training.

Journal Articles

Development of human resource capacity building assistance for nuclear security

Noro, Naoko; Nakamura, Yo; Hirai, Mizuki; Kobayashi, Naoki; Kawata, Norio; Naoi, Yosuke

Modern Environmental Science and Engineering, 3(5), p.309 - 313, 2017/05

The paper introduces methodologies of ISCN for nuclear security training curricula development. The paper focuses on the contribution of ISCN for curriculum development of IAEA transport security training course which ISCN hosted in 2015.

Journal Articles

Development of human resource capacity building assistance for nuclear security

Noro, Naoko; Nakamura, Yo; Hirai, Mizuki; Kobayashi, Naoki; Kawata, Norio; Naoi, Yosuke

Proceedings of 18th International Symposium on the Packaging and Transport of Radioactive Materials (PATRAM 2016) (DVD-ROM), 7 Pages, 2016/09

The paper describes the methdologies ISCN has adopted to develop its training curricula on nuclear security. ISCN has been working closely with the international partners to build its own capacity, especially with the Sandia National Laboratories of the United States. The paper then focuses on the joint course development between IAEA and ISCN on the International Training Course on Transport Security which ISCN hosted in 2015.

Journal Articles

Determination of the compound biological effectiveness (CBE) factors based on the ISHIYAMA-IMAHORI deterministic parsing model with the dynamic PET technique

Ishiyama, Shintaro; Imahori, Yoshio*; Itami, Jun*; Koivunoro, H.*

Global Journal of Medical Research; F, 15(4), p.1 - 5, 2015/11

In defining the biological effects of the neutron capture reaction, we have proposed a deterministic parsing model (ISHIYAMA-IMAHORI model) to determine the Compound Biological Effectiveness (CBE) factor in Borono-Phenyl-Alanine (BPA)-mediated Boron Neutron Capture Therapy (BNCT). To determine the CBE factor, we derived new calculation formula founded on the deterministic parsing model with three constants, CBE0, F, n and the eigen value Nth/Nmax. where, Nth and Nmax are the threshold value of boron concentration of N and saturation boron density. In order to determine Nth and Nmax in the formula, sigmoid logistic function was employed for $$^{10}$$B concentration data, Db(t) obtained by dynamic PETtechnique, where, A, a and t0 are constants. From the application of sigmoid function to dynamic PET data, it is concluded that the Nth and Nmax for tissue and tumor are identified with the parameter constants in the sigmoid function in tion as: th b at 0 and max N = D t = N = x.

Journal Articles

Determination of the Compound Biological Effectiveness (CBE) factors based on the ISHIYAMA-IMAHORI deterministic parsing model with the dynamic PET technique

Ishiyama, Shintaro; Imahori, Yoshio*; Itami, Jun*; Koivunoro, H.*

Journal of Cancer Therapy, 6(8), p.759 - 766, 2015/08

From the concentration of 10BPA drug was intravenously injected into the tumor and normal cells of brain tumor patients measured by dynamic PET method, the CBE factor for the BNCT treatment can be calculated by using ISHIYAMA-IMAHORI model.

Journal Articles

Addressing training needs of security and safeguards implementation officers at nuclear facilities

Vidaurre, J.; Noro, Naoko; Matsuzawa, Reina; Miyaji, Noriko

Proceedings of INMM 56th Annual Meeting (Internet), 10 Pages, 2015/07

Officers at nuclear facilities have substantial responsibilities in the management of nuclear materials: They have to assure that nuclear material is properly controlled and accounted for; they need to detect and deter unauthorized access and removal of nuclear material and protect it from an insider or an outsider threat. At the same time, they need to comply with their State's commitments on nuclear nonproliferation that uses nuclear material accountancy as a fundamental verification measure. To perform such a variety of tasks, facility officers responsible for safeguards and security require a set of Skills, Knowledge and Attitudes commensurate with their responsibilities and tasks. To address this needs, the IAEA and its Member States have conducted a series of training courses, the vast majority of which were targeted to regulatory authorities on safeguards or nuclear material accountancy topics. There are few courses dedicated to facility officers or operators addressing holistically their security and safeguards requirements. This paper analyses the evolution of training courses for authorities and facility personnel in a changing environment from nuclear nonproliferation focused-era to the current broader approach encompassing safeguards and security. Then it recalls some conceptual developments of the recent past and attempts to justify a change in direction on the focus of Member State's training. Finally, it brings some specific proposals towards strengthening and increasing security and safeguards training in Nuclear Material Accountancy and Control relevant to the tasks and responsibilities of safeguards and security practitioners at the facility level.

Journal Articles

Capacity building cooperation on nuclear security; Japan's experience of COE cooperation with Indonesia

Noro, Naoko; Naoi, Yosuke; Matsuzawa, Reina

Proceedings of INMM 56th Annual Meeting (Internet), 9 Pages, 2015/07

For effective human capacity building, COE collaboration is an essential factor. As Japan's COE, ISCN has expanded its capacity to provide nuclear security training and infrastructure development support with the strong support from U.S. This paper describes the methodology and contents of ISCN's human resource development cooperation with Indonesia through COEs. The purpose of this paper is to provide a model for capacity building cooperation in nuclear security by introducing Japan's experience, and thus contribute to strengthen regional as well as global nuclear security.

Journal Articles

The Human capacity building support activities of the Integrated Support Center for Nuclear Nonproliferation and Nuclear Security and the cooperation with the International or foreign organizations which handles human capacity building support

Kobayashi, Naoki; Naoi, Yosuke; Wakabayashi, Shuji; Naito, Aisaku; Hamada, Kazuko; Noro, Naoko; Matsuzawa, Reina

Kaku Busshitsu Kanri Gakkai (INMM) Nihon Shibu Dai-33-Kai Nenji Taikai Rombunshu (Internet), 9 Pages, 2012/10

The Integrated Support Center for Nuclear Nonproliferation and Nuclear Security (ISCN) of the Japan Atomic Energy Agency has started its human capacity building activities, domestically and internationally, for the government officials and employees of companies of emerging nuclear power countries mainly in Asia. In this paper, I will describe the activities of ISCN on capacity building for these countries and also I will briefly describe, focusing on nuclear security, the activities of IAEA, Sandia National Laboratory of United States and the development of human capacity building support activities of neighboring countries of China and Korea. By doing this, I will describe the relationship and cooperation of ISCN with these organizations and talk about my personal views of the future development with these organizations and ISCN.

Journal Articles

Development of regional training course for physical protection of nuclear material and facilities at Integrated Support Center for Nuclear Nonproliferation and Nuclear Security

Naoi, Yosuke; Kobayashi, Naoki; Hamada, Kazuko; Noro, Naoko; Matsuzawa, Reina; Wakabayashi, Shuji; Nonaka, Nobuyuki; Senzaki, Masao; Scharmer, C.*; Duggan, R.*; et al.

Proceedings of INMM 53rd Annual Meeting (CD-ROM), 10 Pages, 2012/07

At the 2010 Washington Nuclear Security Summit, Japan committed to establish a regional center for the strengthening of nuclear security, mainly in Asia, through capacity building support including human resources training and infrastructure development assistance. In accordance with this statement, the Integrated Support Center for Nuclear Nonproliferation and Nuclear Security (ISCN) was inaugurated in December 2010 in Japan Atomic Energy Agency (JAEA). This paper describes the ISCN training activities and introduces the developing new training course on physical protection.

Journal Articles

Counter current "emulsion flow" extractor for continuous liquid-liquid extraction from suspended solutions

Yanase, Nobuyuki; Naganawa, Hirochika; Nagano, Tetsushi; Noro, Junji*

Analytical Sciences, 27(3), p.325 - 330, 2011/03

 Times Cited Count:8 Percentile:29.97(Chemistry, Analytical)JP, 2008-253779   Licensable Patent Information Database   Patent publication (In Japanese)

A single current "emulsion flow" liquid-liquid extraction apparatus has a head having a number of holes from which micrometer-sized droplets of an aqueous phase spout into an organic phase to mix the two liquid phases. For practical use, however, it is a fatal problem that particulate components in the aqueous phase plug the holes. In the present study, we have succeeded to solve the problem by applying a counter current type emulsion flow apparatus where micrometer-sized droplets of the organic phase are generated.

Journal Articles

Reversed-micellar extraction of strontium(II) from model solutions of seawater

Naganawa, Hirochika; Suzuki, Hideya*; Yanase, Nobuyuki; Nagano, Tetsushi; Noro, Junji*

Analytical Sciences, 27(3), p.321 - 324, 2011/03

 Times Cited Count:8 Percentile:29.97(Chemistry, Analytical)

In order to monitor a radioactive nuclide of strontium-90 in seawater around nuclear facilities, a solvent extraction method for collecting Sr(II) in seawater was examined. A reversed-micellar extraction system containing an anionic surfactant AOT and a molecular extractant TODGA in n-hexane was chosen for the extraction of Sr(II) from model solutions of seawater containing 0.5 M NaCl (1 M = 1 mol dm$$^{-3}$$), 0.05 M MgCl$$_{2}$$, and/or 0.01 M CaCl$$_{2}$$. The combination of AOT forming reversed micelles and TODGA coordinating with Sr(II) as an organic ligand (extractant) was found to be efficient for the extraction of Sr(II) from the model solutions. The mechanism of the reversed-micellar extraction system was also discussed in the present study.

Journal Articles

New apparatus for liquid-liquid extraction, "emulsion flow" extractor

Yanase, Nobuyuki; Naganawa, Hirochika; Nagano, Tetsushi; Noro, Junji*

Analytical Sciences, 27(2), p.171 - 174, 2011/02

 Times Cited Count:14 Percentile:42.89(Chemistry, Analytical)JP, 2007-136496   Licensable Patent Information Database   Patent publication (In Japanese)

A simple and low-cost apparatus for continuous and efficient liquid-liquid extraction, which does not need continual mechanical forces (stirring, shaking, etc.) other than solution sending, has newly been developed. This apparatus is composed of a column part where an emulsion state fluid flow (emulsion flow) is generated by spouting micrometer-sized droplets of an aqueous phase into an organic phase and a phase separating part where the emulsion flow is destabilized by means of a sudden decrease in its flow rate. In the present study, the performance of an emulsion flow apparatus in the extraction of Yb(III) and U(VI) from aqueous HNO$$_{3}$$ solutions into isooctane containing D2EHPA was evaluated. The mixing efficiency of the emulsion flow apparatus was found to be comparable with that of a popular liquid-liquid extractor, mixer-settler. Moreover, the emulsion flow apparatus proved to have an overwhelming advantage in terms of phase-separating ability.

Journal Articles

Extraction behavior and separation of lanthanides with a diglycol amic acid derivative and a nitrogen-donor ligand

Shimojo, Kojiro; Naganawa, Hirochika; Noro, Junji*; Kubota, Fukiko*; Goto, Masahiro*

Analytical Sciences, 23(12), p.1427 - 1430, 2007/12

 Times Cited Count:68 Percentile:89.02(Chemistry, Analytical)

The extraction and separation of lanthanides have been investigated using CHON type extractants, which are composed of only C, H, O, and N atoms. N, N-dioctyldiglycol amic acid (DODGAA) shows the high extraction and separation performances for heavier lanthanides compared with typical CHON type extractants. On the other hand, N, N, N', N'-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN) provides the unprecedentedly high selectivity for lighter lanthanides. Furthermore, it was found that the combination of DODGAA and TPEN under suitable conditions enables the mutual separation of light, middle, and heavy lanthanides.

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