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Yogo, Akifumi*; Lan, Z.*; Arikawa, Yasunobu*; Abe, Yuki*; Mirfayzi, S. R.*; Wei, T.*; Mori, Takato*; Golovin, D.*; Hayakawa, Takehito*; Iwata, Natsumi*; et al.
Physical Review X, 13(1), p.011011_1 - 011011_12, 2023/01
Times Cited Count：3 Percentile：88.42(Physics, Multidisciplinary)Naeem, M.*; He, H.*; Harjo, S.; Kawasaki, Takuro; Lin, W.*; Kai, J.-J.*; Wu, Z.*; Lan, S.*; Wang, X.-L.*
Acta Materialia, 221, p.117371_1 - 117371_18, 2021/12
Times Cited Count：31 Percentile：94.34(Materials Science, Multidisciplinary)Naeem, M.*; Zhou, H.*; He, H.*; Harjo, S.; Kawasaki, Takuro; Lan, S.*; Wu, Z.*; Zhu, Y.*; Wang, X.-L.*
Applied Physics Letters, 119(13), p.131901_1 - 131901_7, 2021/09
Times Cited Count：9 Percentile：62.1(Physics, Applied)He, H.*; Naeem, M.*; Zhang, F.*; Zhao, Y.*; Harjo, S.; Kawasaki, Takuro; Wang, B.*; Wu, X.*; Lan, S.*; Wu, Z.*; et al.
Nano Letters, 21(3), p.1419 - 1426, 2021/02
Times Cited Count：41 Percentile：95.34(Chemistry, Multidisciplinary)Naeem, M.*; He, H.*; Harjo, S.; Kawasaki, Takuro; Zhang, F.*; Wang, B.*; Lan, S.*; Wu, Z.*; Wu, Y.*; Lu, Z.*; et al.
Scripta Materialia, 188, p.21 - 25, 2020/11
Times Cited Count：56 Percentile：97.51(Nanoscience & Nanotechnology)Naeem, M.*; He, H.*; Zhang, F.*; Huang, H.*; Harjo, S.; Kawasaki, Takuro; Wang, B.*; Lan, S.*; Wu, Z.*; Wang, F.*; et al.
Science Advances (Internet), 6(13), p.eaax4002_1 - eaax4002_8, 2020/03
Times Cited Count：145 Percentile：99.09(Multidisciplinary Sciences)Wang, B.*; He, H.*; Naeem, M.*; Lan, S.*; Harjo, S.; Kawasaki, Takuro; Nie, Y.*; Wang, X.-L.*; 7 of others*
Scripta Materialia, 155, p.54 - 57, 2018/10
Times Cited Count：57 Percentile：95(Nanoscience & Nanotechnology)Handley-Sidhu, S.*; Mullan, T. K.*; Grail, Q.*; Albadarneh, M.*; Onuki, Toshihiko; Macaskie, L. E.*
Scientific Reports (Internet), 6, p.23361_1 - 23361_8, 2016/03
Times Cited Count：59 Percentile：87.49(Multidisciplinary Sciences)The sorption capacity of the BHAP for both Sr
and Co was higher than for a synthetically produced hydroxyapatite (HAP) in the solutions tested. Results confirm that hydroxyapatite minerals of high surface area and amorphous calcium phosphate content, typical for biogenic sources, are suitable restoration or reactive barrier materials for the remediation of complex contaminated environments or wastewaters.
V
zquez-Campos, X.*; Kinsela, A. S.*; Collins, R. N.*; Neilan, B. A.*; Aoyagi, Noboru; Waite, T. D.*
Environmental Science & Technology, 49(14), p.8487 - 8496, 2015/07
Times Cited Count：31 Percentile：67.81(Engineering, Environmental)The uptake and binding of uranium by a moderately acidophilic fungus, , recently isolated from a uranium mine site, is examined in this work in order to better understand the potential impact of organisms such as this on uranium sequestration in hydrometallurgical systems. Our results show that the viability of the fungal biomass is critical to their capacity to remove uranium from solution. Indeed, live biomass were capable of removing 16 mg U/g dry weight in contrast with dead biomass which removed 45 mg U/g dry weight after 2 h. Furthermore, the uranium binds with different strength, with a fraction ranging from 20-50 % being easily leachable from the exposed biomass by a 10 min acid washing. Results from X-ray absorption spectroscopy measurements show that the strength of uranium binding is strongly influenced by cell viability, with live cells showing a more well-ordered uranium bonding environment, while the distance to carbon or phosphorus second neighbours is similar in all samples. When coupled with laser spectroscopy, the importance of organic acids and phosphates, and polysaccharides, likely released with fungal cell death, appear to be the primary determinants of uranium binding in this system. These results provide an important progression to our understanding with regard to uranium sequestration in hydrometallurgical applications.
Schwehr, K. A.*; Otosaka, Shigeyoshi; Merchel, S.*; Kaplan, D. I.*; Zhang, S.*; Xu, C.*; Li, H.-P.*; Ho, Y.-F.*; Yeager, C. M.*; Santschi, P. H.*; et al.
Science of the Total Environment, 497-498, p.671 - 678, 2014/11
Times Cited Count：14 Percentile：38.98(Environmental Sciences)A new, accurate and simple pH-dependent solvent extraction method combined with accelerator mass spectrometry (AMS) measurement for 
I/
I isotopes and iodine speciation (iodide, iodate, and organo-I) quantification in liquids of any ionic strength has been developed. We then validated the AMS method for activity concentration measurements with a recently developed gas chromatography mass spectrometry method for I concentrations of 1 Bq/L or higher. This technique was applied to I-contaminated groundwater from the Savannah River Site, USA, and demonstrated changes of I and I concentrations and speciation along a pH, redox potential, and organic carbon gradient. The data suggest that I/I and species distribution is strongly pH dependent. The new method can now be applied to a wide range of chemically-diverse aquatic systems, including uncontaminated environments.
O-dependent iodide oxidationLi, H.-P.*; Yeager, C. M.*; Brinkmeyer, R.*; Zhang, S.*; Ho, Y.-F.*; Xu, C.*; Jones, W. L.*; Schwehr, K. A.*; Otosaka, Shigeyoshi; Roberts, K. A.*; et al.
Environmental Science & Technology, 46(9), p.4837 - 4844, 2012/03
Times Cited Count：52 Percentile：77.77(Engineering, Environmental)In order to develop an understanding of the role that microorganisms play in the transport of I in soil-water systems, naturally occurring bacteria isolated from the F-area subsurface of the Savannah River Site (SRS) were assessed for iodide oxidizing activity. Spent liquid medium from a number of SRS bacterial cultures enhanced iodide oxidation 2-10 fold in the presence of hydrogen peroxide (HO). From a time-series measurements of peroxidase activities and organic acid concentrations, it was hypothesized that microbial organic acid exudate promoted iodide oxidation via following mechanisms; (1) organic acids interact with HO to form strong iodide oxidizing agents, peroxy carboxylic acids, and (2) organic acid secretion led to enhanced rates of HO-dependent iodide oxidation by lowering the pH of the culture medium.
Jolliet, S.; McMillan, B. F.*; Villard, L.*; Vernay, T.*; Angelino, P.*; Tran, T. M.*; Brunner, S.*; Bottino, A.*; Idomura, Yasuhiro
Journal of Computational Physics, 231(3), p.745 - 758, 2012/02
Times Cited Count：13 Percentile：60.98(Computer Science, Interdisciplinary Applications)I) by soil organic matter and possible consequences of the remedial action at Savannah River SiteXu, C.*; Miller, E. J.*; Zhang, S.*; Li, H.-P.*; Ho, Y.-F.*; Schwehr, K. A.*; Kaplan, D. I.*; Otosaka, Shigeyoshi; Roberts, K. A.*; Brinkmeyer, R.*; et al.
Environmental Science & Technology, 45(23), p.9975 - 9983, 2011/12
Times Cited Count：68 Percentile：83.22(Engineering, Environmental)In order to investigate accumulation process of iodine-129 (I) in a contaminated F-Area groundwater plume of the US Savannah River Site, soil resuspension experiments simulating surface runoff and erosion events were conducted. Results showed that 72
77% of the newly-introduced iodide was irreversibly sequestered into the organic-rich soil, while the rest was transformed into colloidal and dissolved organo-iodine by the soil. Laboratory iodination of the soil indicated a preferential incorporation of inorganic iodine into soil organic matter (SOM) at acidic pH (34), except for the iodination catalyzed by lactoperoxidase, which favors more alkaline conditions. From this result, we concluded that under very acidic conditions, abiotic iodination of SOM was predominant, while under less acidic conditions (pH 
5), microbial enzymatically-assisted iodination took over.
I) at the Savannah River Site?Xu, C.*; Zhang, S.*; Ho, Y.-F.*; Miller, E. J.*; Roberts, K. A.*; Li, H.-P.*; Schwehr, K. A.*; Otosaka, Shigeyoshi; Kaplan, D. I.*; Brinkmeyer, R.*; et al.
Geochimica et Cosmochimica Acta, 75(19), p.5716 - 5735, 2011/10
Times Cited Count：62 Percentile：83.32(Geochemistry & Geophysics)In order to understand the effect of soil organic matter (SOM) on the mobility of iodine in the vicinity of the F-area seepage basin at the U.S. Department Energy's Savannah River Site (SRS), relationships between radioiodine/iodine concentration and properties of SOM (e.g., degree of humification, aromaticity, and molecular weight) were examined. Analyses were carried out for four sequential extracts of SOM (freshwater, alkaline, glycerol, and citric-alkaline solutions). Iodine in SOM was selectively bound to a small-size aromatic subunit (less than 10 kDa), and majority of water soluble I was associated with a low molecular weight amphiphilic organic carrier (13.5-15 kDa). From these results, it was suggested that (1) SOM behaved as a sink as well as a source for iodine at the SRS, and (2) the function of SOM varies with groundwater chemistry.
I and I species in an acidic groundwater plume at the Savannah River SiteOtosaka, Shigeyoshi; Schwehr, K. A.*; Kaplan, D. I.*; Roberts, K. A.*; Zhang, S.*; Xu, C.*; Li, H.-P.*; Ho, Y.-F.*; Brinkmeyer, R.*; Yeager, C. M.*; et al.
Science of the Total Environment, 409(19), p.3857 - 3865, 2011/09
Times Cited Count：64 Percentile：82.13(Environmental Sciences)Spatial distributions of concentrations and speciation of radioiodine (I) and stable iodine (I) in groundwater in the vicinity of the F-area seepage basin at the U.S. Department Energy of Savannah River Site were investigated. I concentration in groundwater was 8.6 Bq/L immediately downstream of the seepage basin (well FSB-95DR), and decreased with distance from the infiltration basin. I concentration decreased similarly to that of I. Although there was no potential I source in wastes in the basin, I also showed a similar gradient to that of I. High concentrations of I or I were not detected in groundwater collected from wells located outside of the mixed waste plume of this area. The high iodide concentrations in groundwater near the basin were presumed to be caused by dissolution of iodide from soil due to gradually increasing of pH values in the last decade.
Labit, B.*; Pochelon, A.*; Rancic, M.*; Piras, F.*; Bencze, A.*; Bottino, A.*; Brunner, S.*; Camenen, Y.*; Chattopadhyay, P. K.*; Coda, S.*; et al.
Proceedings of 23rd IAEA Fusion Energy Conference (FEC 2010) (CD-ROM), 8 Pages, 2011/03
Villard, L.*; Bottino, A.*; Brunner, S.*; Casati, A.*; Chowdhury, J.*; Dannert, T.*; Ganesh, R.*; Garbet, X.*; G
rler, T.*; Grandgirard, V.*; et al.
Plasma Physics and Controlled Fusion, 52(12), p.124038_1 - 124038_18, 2010/11
Times Cited Count：18 Percentile：56.51(Physics, Fluids & Plasmas)McMillan, B. F.*; Lapillonne, X.*; Brunner, S.*; Villard, L.*; Jolliet, S.; Bottino, A.*; Grler, T.*; Jenko, F.*
Physical Review Letters, 105(15), p.155001_1 - 155001_4, 2010/10
Times Cited Count：100 Percentile：93.39(Physics, Multidisciplinary)Bottino, A.*; Scott, B. D.*; Brunner, S.*; McMillan, B. F.*; Tran, T. M.*; Vernay, T.*; Villard, L.*; Jolliet, S.; Hatzky, R.*; Peeters, A. G.*
IEEE Transactions on Plasma Science, 38(9), p.2129 - 2135, 2010/09
Times Cited Count：26 Percentile：69.51(Physics, Fluids & Plasmas)G
mez-Ros, J.-M.*; de Carlan, L.*; Franck, D.*; Gualdrini, G.*; Lis, M.*; Lpez, M. A.*; Moraleda, M.*; Zankl, M.*; Badal, A.*; Capello, K.*; et al.
Radiation Measurements, 43(2-6), p.510 - 515, 2008/02
Times Cited Count：25 Percentile：82.53(Nuclear Science & Technology)This communication summarizes the results concerning the Monte Carlo modeling of Germanium detectors for the measurement of low energy photons arising from the "International comparison on MC modeling for in vivo measurement of Americium in a knee phantom" organized within the EU Coordination Action CONRAD (Coordinated Network for Radiation Dosimetry) as a joint initiative of EURADOS working groups 6 (computational dosimetry) and 7 (internal dosimetry).
