Welcome to ERAN

What is ERAN?

ERAN (Environmental Radioactivity Research Network Center)  has been recognized by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) as a Joint Usage / Research Center since 2019.
ERAN consists of six organizations: CRiED of Univ. of Tsukuba, IER of Fukushima Univ., and IREM of Hirosaki Univ. as network centers, and JAEA, QST, and NIES as cooperative network centers.
We are convinced that the results of the joint research and international efforts will be critical to the recovery and possible future events.

Hot Topics

Terrestrial and River

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0045653520332550?via=ihub

Radiocesium distribution and mid-term dynamics in the ponds of the Fukushima Dai-ichi nuclear power plant exclusion zone in 2015–2019

This study analyzes the 137Cs behavior in the ponds of Okuma Town from 2015 to 2019 in the Fukushima Dai-ichi nuclear power plant (FDNPP) exclusion zo…

MDPI

 

https://www.mdpi.com/1660-4601/18/3/998

Temporal and Spatial Variation of Radon Concentrations in Environmental Water from Okinawa Island, Southwestern Part of Japan

In this study, to get a better understanding in characterizing groundwater and ensure its effective management, the radon concentrations in water samples were measured through Ryukyu limestone in southern Okinawa Island, Japan. Water samples were collected from a limestone cave (Gyokusendo cave, dropping water) and two springs (Ukinju and Komesu, spring water), and the radon concentrations were measured by liquid scintillation counters. The radon concentrations in the samples from the Gyokuse...

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0048969720382395?via=ihub

Impacts of freeze-thaw processes and subsequent runoff on 137Cs washoff from bare land in Fukushima

The deposited 137Cs is one of the long-lived radionuclides, that was released following the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, h…

Forest

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0048969721070595?via=ihub

Evaluation of contribution rate of the infiltrated water collected using zero-tension lysimeter to the downward migration of 137Cs derived from the FDNPP accident in a cedar forest soil

The vertical distribution of 137Cs in forest soil is important for predicting air dose rates and future cycling in forest ecosystems. However, there a…

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0048969721067747?via=ihub

Vertical distribution and transport of radiocesium via branchflow and stemflow through the canopy of cedar and oak stands in the aftermath of the Fukushima Dai-ichi Nuclear Power Plant accident

Aiming to fill a need for data regarding radiocesium transport via both branchflow and stemflow through forests impacted by radioactive fallout, this …

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0301479721013815?via=ihub

Scots pine stands biomass assessment using 3D data from unmanned aerial vehicle imagery in the Chernobyl Exclusion Zone

Thirty-five years after the accident, large forest areas in the Chernobyl Exclusion Zone still contain huge amounts of radionuclides released from the…

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0048969721040018?via=ihub

Radiocesium leaching from litter during rainstorms in the Fukushima broadleaf forest

Forests are important sources of dissolved radiocesium (137Cs) discharge downstream. To improve understanding of dissolved 137Cs discharge processes d…

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0048969720361271?via=ihub

Speciation of cesium in tree tissues and its implication for uptake and translocation of radiocesium in tree bodies

Since the Chernobyl and Fukushima nuclear power plant accidents, extensive research has focused on the distribution and cycle of radiocesium in forest…

Air

Ocean

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0025326X21010031?via=ihub

Planned release of contaminated water from the Fukushima storage tanks into the ocean: Simulation scenarios of radiological impact for aquatic biota and human from seafood consumption

The radiological impact for human and aquatic biota as a result of a planned release of contaminated water stored in tanks near the Fukushima Dai-ichi…

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0025326X21004471?via=ihub#ac0005

Spatiotemporal change of cesium-137 in the Pacific coast of Tohoku, Japan: The mussel watch approach

We measured radiocesium in mussel tissue collected from the Pacific coast of Tohoku from 2011 to 2015 to investigate the temporal and spatial dynamics…

Scientific Reports

 

https://www.nature.com/articles/s41598-021-85085-w

First isolation and analysis of caesium-bearing microparticles from marine samples in the Pacific coastal area near Fukushima Prefecture

Chemistry

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0022286021007122?via=ihub#!

Syntheses, characterization, and antimicrobial studies of Ni(II), Cu(II), and Co(III) complexes with an N-pendant azamacrocyclic chelator

Condensation of 1,2-diamino propane with acetone in the presence of perchloric acid furnished a 14-membered octamethyl tetraazamacrocycle, Me8dien…

MDPI

 

https://www.mdpi.com/2075-163X/11/1/53

Preferential Elimination of Ba2+ through Irreversible Biogenic Manganese Oxide Sequestration

Biogenic manganese oxides (BMOs) formed in a culture of the Mn(II)-oxidizing fungus Acremonium strictum strain KR21-2 are known to retain enzymatic Mn(II) oxidation activity. Consequently, these are increasingly attracting attention as a substrate for eliminating toxic elements from contaminated wastewaters. In this study, we examined the Ba2+ sequestration potential of enzymatically active BMOs with and without exogenous Mn2+. The BMOs readily oxidized exogenous Mn2+ to produce another BMO p...

www.sciencedirect.com

 

https://www.sciencedirect.com/science/article/pii/S0045653520333014?via=ihub

Effective removal of iodate by coprecipitation with barite: Behavior and mechanism

Radioactive iodine (129I) is of great concern owing to its high mobility in the environment and long-term radiotoxicity. However, there is a lack of e…

J-STAGE

 

https://www.jstage.jst.go.jp/article/pfr/16/0/16_2405035/_article

Simple Pretreatment Method for Tritium Measurement in Environmental Water Samples using a Liquid Scintillation Counter

The aim of this study is to evaluate quantitatively the effectiveness of the ion exchange resins and activated carbon in tritium measurement. A standa …

Animal

MDPI

 

https://www.mdpi.com/1660-4601/18/4/1772

Transition of Radioactive Cesium Deposition in Reproductive Organs of Free-Roaming Cats in Namie Town, Fukushima

We investigated the internal contamination by radioactive cesium associated with the FDNPP accident, in the testes or uterus and ovaries of free-roaming cats (Felis silvestris catus), which were protected by volunteers in the Namie Town, Fukushima. A total of 253 samples (145 testes and 108 uterus and ovaries) obtained from adult cats and 15 fetuses from 3 pregnant female cats were measured. Free-roaming cats in Namie Town had a higher level of radioactive contamination in comparison to the c...

www.tandfonline.com

 

https://www.tandfonline.com/doi/full/10.1080/00223131.2021.1894255

https://www.tandfonline.com/doi/full/10.1080/00223131.2021.1894255

www.pagepressjournals.org

 

https://www.pagepressjournals.org/index.php/microscopie/article/view/9697

Contribution of light and electron microscopy in the identification of morphological alterations in large Japanese field mouse (Apodemus speciosus) testes exposed to low-dose-r...

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