JOPSS - Search Results

Journal Articles

Evolved gases from organic materials used in the superconducting magnets irradiated by gamma rays at liquid nitrogen temperature

Idesaki, Akira; Morishita, Norio; Ito, Hisayoshi; Kamiya, Tomihiro; Nakamoto, Tatsushi*; Kimura, Nobuhiro*; Makida, Yasuhiro*; Ogitsu, Toru*; Ohata, Hirokatsu*; Yamamoto, Akira*

AIP Conference Proceedings 824, p.330 - 334, 2006/03

https://doi.org/10.1063/1.2192368

Polyimide films and glass fiber reinforced plastics (GFRPs) are used as insulating or structural materials for superconducting magnets in a neutrino beam line of the Japan Proton Accelerator Research Complex (J-PARC). It is indispensable to evaluate radiation resistance of these materials, because they are required to keep their electrical and mechanical properties in a high radiation field of 30 kGy/year at low temperature of 4 K. In this work, the gas evolution resulting from chemical reactions induced in the polyimide films and GFRPs by ray irradiation at 77 K was investigated. It was found that the main component of the evolved gas is hydrogen. The amount of hydrogen evolved from the superconducting magnet system used in the neutrino beam line was estimated to be 0.37 mol/year (0.01 L/year as the volume of liquid hydrogen). It indicates that the hydrogen evolved from the organic materials does not influence on the operation of the helium purifying system.

Journal Articles

Sequence analysis of the gliding protein Gli349 in

Metsugi. Shoichi; Uenoyama, Atsuko*; Kubo, Jun*; Miyata, Makoto*; Yura, Kei; Kono, Hidetoshi; Go, Nobuhiro

Biophysics, 1, p.33 - 43, 2005/05

https://doi.org/10.2142/biophysics.1.33

The motile mechanism of Mycoplasma mobile remains unknown but is believed to differ from any previously identified mechanism in bacteria. Gli349 of M. mobile is known to be responsible for both adhesion to glass surfaces and mobility. We therefore carried out sequence analyses of Gli349 and its homolog MYPU2110 from M. pulmonis to decipher their structures. We found that the motif "YxxxxxGF" appears 11 times in Gli349 and 16 times in MYPU2110. Further analysis of the sequences revealed that Gli349 contains 18 repeats of about 100 amino acid residues each, and MYPU2110 contains 22. No sequence homologous to any of the repeats was found in the NCBI RefSeq non-redundant sequence database, and no compatible fold structure was found among known protein structures, suggesting that the repeat found in Gli349 and MYPU2110 is novel and takes a new fold structure. Proteolysis of Gli349 using chymotrypsin revealed that cleavage positions were often located between the repeats, implying that regions connecting repeats are unstructured, flexible and exposed to the solvent.

Journal Articles

GFP accumulation controlled by an auxin-responsive promoter as a non-destructive assay to monitor early auxin response

Aspuria, E. T.; Oura, Chiharu*; Chen, Q.*; Uchimiya, Hirofumi; Ono, Yutaka

Plant Cell Reports, 21(1), p.52 - 57, 2002/07

https://doi.org/10.1007/s00299-002-0484-6

Times Cited Count：7 Percentile：17.49(Plant Sciences)

no abstracts in English

Journal Articles

Report of 18th Annual Meeting of the International Consultative Group on Food Irradiation (ICGFI)

Sunaga, Hiromi

Genshiryoku Sangyo Shimbun, 2121, P. 2, 2002/01

no abstracts in English

JAEA Reports

None

Arii, Yoshio

JNC TN9200 99-009, 432 Pages, 1999/07

JNC-TN9200-99-009.pdf:17.27MB

None

Journal Articles

The Interlaminar shear strength of FRPs under the influence of various radiation sources

S.M.Spiessberger*; K.Humer*; H.W.Weber*; E.K.Tschegg*; H.Gerstenberg*; Udagawa, Akira

Advances in Cryogenic Engineering Materials, Vol.44, p.191 - 195, 1998/00

https://doi.org/10.1007/978-1-4757-9056-6_25

no abstracts in English

Journal Articles

High energy ion irradiation effects on polymer materials, 2; Proton irradiation effects on PMMA and GFRP

Kudo, Hisaaki; Sasuga, Tsuneo; Seguchi, Tadao; Katsumura, Yosuke*

Polymer, 37(21), p.4663 - 4665, 1996/10

https://doi.org/10.1016/S0032-3861(96)00317-5

Times Cited Count：21 Percentile：64.98(Polymer Science)

no abstracts in English

JAEA Reports

None

;

PNC TN1410 96-030, 559 Pages, 1996/06

PNC-TN1410-96-030.pdf:27.61MB

no abstracts in English

JAEA Reports

Investigation of pyrometallurgical partitioning and extracting technology of irradiated fuel

Yumoto, Ryozo*; Yokochi, Yoji*; Koizumi, Masumichi*; Seki, Sadao*

PNC TJ9409 96-002, 93 Pages, 1996/03

PNC-TJ9409-96-002.pdf:2.64MB

The state of development of pyrometallurgical partitioning and extracting technology of irradiated fuel is investigated. Also in case of perfoming the test at O-arai engineering center, the contents of the test, equipments, structure and arragement of cells that equipments are installed, are studied. The purpose of the test is to confirm the realization of the process and behavior of FP and TRU elements, and off-gass that cannot be made dear by cold test. In this study it is assumed that 100g monju fuel (94,000MWd/t B.U, cooled for 550 days) per batch is treated. Four processes are picked up except for pin sectioning and powdering, as important subjects. They are as follows. (1)reduction of oxide fuel (2)electrorefining (3)cathode processing (4)extraction of TRU elements. And the outline of the test, blocked flow chart and the outline of equipment are clarified. And the outline of chart is drawn. Moreover, the specification of analitical equipments which are necessary to analyze the product is shown. From spent chloride, TRU and a part of FP elements are extracted and they are recycled for electrorefining and so on. The salt-waste including residual FP elements is kept in a receptacle after being absorbed into Zeorite and soldified. As the disposition of these tests, modified test cell in the existing FMF, modified concrete cell in AGF, new cell at B2F in the existing FMF and new cell at second auxiliary room in FMF extension are studied. As result of considering the disposition for equipment, the difficulty of reconstucting new cell including of equipments, method of mentenance, and equipments of ventilazion (Ar circumstance) including of management of off gas, and the plan of disposition, it is concluded that constructing iron cell into the second auxiliary room of FMF extension is best, because it is easy to construct safely, and the occurance of radioactive waste and the influence to other tests is little, and it is possible to examine more efficiently.