Recruitment for Postdoctoral Fellow
(Fixed-term researcher)

1. Physics	Chemistry	Mathematics	Geo and Environemtal Sciences	Biology	Radiation
   Mechanics	Material	Electricity and Electronics	Architectural and Civil Engineering	Applied Physics	Applied Chemistry
   Chemical Engineering	Measurements and Instruments	Computer and Information	Robotics	Other	All

2. No	Theme
   	Department	Section	Location	Contact Person	Radiation Worker/ Non-Radiation Worker	Field (for reference）
   	Summary
   J26	Study on carbon cycling in terrestrial ecosystems and its interaction with environmental changes, using radioactive and stable carbon isotope analysis
   	Nuclear Science and Engineering Center	Research Group for Radiochemistry, Environment and Radiation Sciences Division	Tokai Research and Development Center Nuclear Science Research Institute	Dr. Jun Koarashi Tel:+81-29-282-5903 E-mail: koarashi.jun@jaea.go.jp	Non-Radiation Worker	Geo and Environmental Sciences Biology Chemistry Measurements and Instruments
   	There is growing concern that recent rapid changes in climate and environment could have a significant influence on carbon cycling in terrestrial ecosystems and could consequently lead to a positive feedback for global warming. However, the magnitude and timing of this effect remain highly uncertain due to a lack of quantitative understanding of the migration and storage processes of carbon in terrestrial ecosystems (especially forests) and their responses to the changes in environment. In this study, we will conduct field (with different ecosystem properties) and laboratory (under controlled environmental conditions) experiments to quantify the processes and their interactions with changes in environment, using radioactive (14C) and stable carbon isotopes as tracers for carbon cycling in terrestrial ecosystems.
   J31	The experimental study to elucidate the relationship between functions and dynamics of bio-macromolecules using deuterated samples
   	Sector of Nuclear Science Research, J-PARC Center	Neutron Science Section Materials and Life Science Division	J-PARC	Kaoru Shibata Tel:+81-(0)29-284-3199 E-mail: shibata.kaoru@jaea.go.jp	Radiation Worker	Biology Chemistry Measurements and Instruments
   	By mainly using the inelastic and quasielastic scattering spectrometer DNA installed in J-PARC/MLF neutron facility, the corresponding researcher will perform the experimental study to investigate the relationship between functions and dynamics of bio-macromolecules, such as the molecular mechanisms of the functions of enzymatic proteins, using particularly the deuterated protein samples. Therefore, it will be given special importance that the corresponding researcher has the extensive experience of preparation of bio-macromolecules, especially proteins by using bacterial expression systems. The corresponding researcher will also be expected to perform the research assistance for the related research fields in addition to his/her own research.
   J36	Study of geological environment during construction, operation and closure of underground facility.
   	Tono Geoscience Center	Crystalline environment research group	Tono Geoscience Center	Teruki Iwatsuki E-mail: iwatsuki.teruki@jaea.go.jp	Non-Radiation Worker	Geo and Environemtal Sciences Chemistry Biology Chemical Engineering Measurements and Instruments Material
   	The construction, operation and closure of large underground facility changes hydraulic and hydrochemical condition around the facility. Such disturbance process and the recovery mechanism are still unclear. It is required to develop the observation and simulation methods for understanding of the phenomenon. Postdoctoral fellow studies the hydraulic and hydrogeochemical evolution (artificial disturbance and the recovery) process, impact of burial materials such as cement, clay in deep underground around Mizunami Underground Research Laboratory (MIU) during facility construction and after the closure by analyzing the rock, groundwater and burial materials, and previous data.
   F14	Elucidation of migration behavior of radioactive cesium in forest and technological development for preventing dispersion of contaminates
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Interfacial Reaction Field Chemistry	Tokai Research and Development Center Nuclear Science Research Institute	Fuminori Sakamoto Tel:+81-29-284-3517 E-mail: sakamoto.fuminori@jaea.go.jp	Radiation Worker	Geo and Environemtal Sciences Biology Chemistry Applied Chemistry
   	Fungi including mushrooms have a high ability to absorb radioactive cesium from contaminated soil and woods. This ability is supposed to give significant impact on migration behavior of radioactive cesium in forest although the mechanism has yet to be elucidated. The Japanese government recently decided to decontaminate Satoyama, undeveloped woodland near the populated areas, in near future. To achieve this, prevention of radioactive cesium dispersion from the depths of the forest to Satoyama areas is necessary The purposes of this study is to elucidate the migration behavior of radioactive cesium in forest through investigating biological transformation of radioactive cesium by fungi and cesium immobilization by minerals. This study also aims to develop methods to preventing dispersion of radioactive cesium in forest.