result 3777 件
| Author | Zeng, Gang| Takatsuka, Shigenobu| |
|---|---|
| Published Date | 2009-01-01 |
| Publication Title | International Journal of Curriculum Development and Practice |
| Volume | volume11 |
| Content Type | Journal Article |
| Author | Nguyen, Huu Ngu| |
|---|---|
| Published Date | 2010-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| JaLCDOI | 10.18926/21139 |
|---|---|
| Title Alternative | Isotopic Analysis of Rb and Sr Using a Full Automatic Thermal Ionization Mass Spectrometer |
| FullText URL | pitsr_052_051_070.pdf |
| Author | Kagami, Hiroo| Okano, Osamu| Sudo, Hiroshi| Honma, Hiroji| |
| Abstract | Analytical method for strontium isotope ratios and rubidium and strontium concentrations has been established using a full automatic thermal ionization mass spectrometer. The machine is a modified model "MAT 260" of Varian MAT LTD. Each of simultaneously loaded thirteen samples is successively analysed full automatically following to a specific controling program which has been selected as being most suitable for each sample. However, the most characteristic feature of this machine compared to other types is computer controled peak jumping and peak centering before measurment of the signal of each peak. By this the accuracy of isotopic measurement has been surprisingly improved. Analytical procedures are described in detail which include decomposition of samples, separation of Rb and Sr, loading samples on filament and mass spectrometry. Accuracy and reproducibility of isotope analyses are excellent : 43 separate analyses of standard sample NBS 987 over one year gave a mean (87)Sr/(86)Sr ratio of 0.710238 (normalized to the (88)Sr/(86)Sr ratio of 8.375209) with a value of 20δ of 0.000008. The ratio obtained is slightly higher than the value of 0.71014 given by NBS, but it is almost identical to the mean of recently reported twenty analyses. Our determinations for Rb and Sr concentrations of standard samples are as follows : JG-1, Rb 184.4 ppm, Sr 185.5 ppm; JB-l, Rb 41.5Ppm, Sr 448.4 ppm , each of which is near the mean of reported values for corresponding element of the sample (ANDO et al., 1974). Concentrations of Rb and Sr in pure water and regents used in chemical treatement of samples were also measured; a possible error due to the contamination is negligible for most geochemical samples. |
| Publication Title | 岡山大学温泉研究所報告 |
| Published Date | 1982-03-25 |
| Volume | volume52 |
| Start Page | 51 |
| End Page | 70 |
| ISSN | 0369-7142 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002310968 |
| JaLCDOI | 10.18926/21085 |
|---|---|
| Title Alternative | Automatic measurement of oxygen isotope ratio of water samples |
| FullText URL | pitsr_056_027_034.pdf |
| Author | Chiba, Hitoshi| Sakai, Hitoshi| Yasutake, Masatoshi| |
| Abstract | The automatic sample preparation system for oxygen isotope analysis of natural water samples was constructed. The system is essentially a modification of that originally designed by W. Dansgaard in the University of Copenhagen. Sixty water samples of 5 ml each are automatically equilibrated with CO(2) of 30 ml NTP each within 4.5 hours. The equilibrated CO(2) gases are successively measured for their oxygen isotopic ratios by an automatic mas-sspectrometer, VG903. The time required for the measurement of the 60 CO(2) samples is about 15 hours; thus approximately 20 hours are required to complete the isotopic measurements of 60 water samples. The accuracy of the oxygen isotopic analyses is about 0.1%. The result of oxygen isotopic analyses by the automatic preparation system agrees with that of the conventional method within about +0.1%. The results indicate that the automatic preparation system is applicable for the oxygen isotope analysis of natural water samples. |
| Publication Title | 岡山大学温泉研究所報告 |
| Published Date | 1985-03-30 |
| Volume | volume56 |
| Start Page | 27 |
| End Page | 34 |
| ISSN | 0369-7142 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002310952 |
| Author | Takahashi, Sumio| |
|---|---|
| Published Date | 1995-07 |
| Publication Title | 岡山実験動物研究会報 |
| Volume | volume12 |
| Content Type | Others |
| Author | Ishida, Hiroyuki| |
|---|---|
| Published Date | 1992-12-15 |
| Publication Title | 環境制御 |
| Volume | volume14 |
| Content Type | Others |
| Author | Ishida, Hiroyuki| |
|---|---|
| Published Date | 1996-12 |
| Publication Title | 環境制御 |
| Volume | volume18 |
| Content Type | Others |
| Author | Zhang, Zhongren| |
|---|---|
| Published Date | 1996-12 |
| Publication Title | 環境制御 |
| Volume | volume18 |
| Content Type | Departmental Bulletin Paper |
| Author | Muramoto, Shigeki| Kubota, Fumitake| Song, XiangFu| Zou, Guoyan| Agata, Waichi| |
|---|---|
| Published Date | 2001-08 |
| Publication Title | 環境制御 |
| Volume | volume23 |
| Content Type | Departmental Bulletin Paper |
| Author | Sakata, Yusaku| |
|---|---|
| Published Date | 2001-08 |
| Publication Title | 環境制御 |
| Volume | volume23 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/fest/20353 |
|---|---|
| FullText URL | fest_015_001_013.pdf |
| Author | Ichiminami, Fumikazu| Dincsoy Enver Erdinc| Fan Shunru| |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2010-03-15 |
| Volume | volume15 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 13 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002310914 |
| Author | Takahashi, Sumio| Honda, Junichi| Manabe, Yoshie| Matsumura, Ryusei| Takeuchi, Sakae| |
|---|---|
| Published Date | 2003-09 |
| Publication Title | 岡山実験動物研究会報 |
| Volume | volume20 |
| Content Type | Journal Article |
| Author | Takahashi, Sumio| Matsumura, Ryusei| Takeuchi, Sakae| |
|---|---|
| Published Date | 2004-09 |
| Publication Title | 岡山実験動物研究会報 |
| Volume | volume21 |
| Content Type | Journal Article |
| Author | Murakami, Yousuke| Kusumoto, Kenji| Otsuki, Mariko| Takeuchi, Sakae| Takahashi, Sumio| |
|---|---|
| Published Date | 2005-12 |
| Publication Title | 岡山実験動物研究会報 |
| Volume | volume22 |
| Content Type | Journal Article |
| Author | Murakami, Itsuo| Takeuchi, Sakae| Takahashi, Sumio| |
|---|---|
| Published Date | 2007-12 |
| Publication Title | 岡山実験動物研究会報 |
| Volume | volume24 |
| Content Type | Journal Article |
| Author | Mimura, Hidefumi| Fujiwara, Hiroyasu| Hiraki, Takao| Gobara, Hideo| Shibamoto, Kentaro| Kimata, Yoshihiro| Ozaki, Toshifumi| Sasaki, Satoru| Kanazawa, Susumu| |
|---|---|
| Published Date | 2010-04-01 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume122 |
| Issue | issue1 |
| Content Type | Journal Article |
| Author | Namba, Masayoshi| |
|---|---|
| Published Date | 2010-04-01 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume122 |
| Issue | issue1 |
| Content Type | Journal Article |
| Author | Yasuhara, Akihiro| Wada, Jun| Eguchi, Jun| Nakatsuka, Atsuko| Murakami, Kazutoshi| Kanzaki, Motoko| Teshigawara, Sanae| Makino, Hirofumi| |
|---|---|
| Published Date | 2010-04-01 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume122 |
| Issue | issue1 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/19962 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_44_73.pdf |
| Author | Imanaka, Hiroyuki| Tanaka, Soukichi| Feng, Bin| Imamura, Koreyoshi| Nakanishi, Kazuhiro| |
| Abstract | We used modified Czapek-Dox (mCD) or dextrin-peptone-yeast extract (DPY) media to cultivate a filamentous fungus, Aspergillus oryzae IAM 2706 by three different cultivation methods, i.e., shaking-flask culture (SFC), agar-plate culture (APC), and membrane-surface liquid culture (MSLC), to identify the differences in cultivation behaviors and gene transcriptional profiles. The fungi cultivated by APC or MSLC secreted a greater number of different proteins/enzymes in larger quantities compared with fungi cultivated by SFC, particularly when DPY medium was used. In particular, the amounts of protease secreted by fungi cultivated via MSLC or APC were much greater compared with SFC. When mCD medium was used, α-amylase activity was barely detectable in all cultures while the activity was detected in MSLC and APC in a quantity that was several times higher than that in SFC using DPY medium. SDS-PAGE analysis and N-terminal amino acid sequences confirmed 6 proteins in the culture supernatants when DPY medium was used. Among these proteins oryzin (an alkaline protease) and α-amylase were detected at much higher levels in APC and MSLC compared with SFC, which was consistent with the measured activity of the secreted enzymes. However, when mCD medium was used, only oryzin was detected in significant amounts in MSLC and APC. Microarray analyses of the fungi cultivated by SFC, APC or MSLC using either mCD or DPY media indicated that the gene transcriptional profile of the MSLC sample was similar to that of the APC sample but different from that of the SFC sample. When mCD medium was used, most of the genes that were up-regulated 10-folds or greater in the MSLC sample relative to the SFC sample were unknown or predicted proteins. Transcription of the oryzin gene was only slightly up-regulated in the MSLC sample while transcription of the α-amylase gene was slightly down-regulated. On the other hand, when DPY medium was used, many known genes including the oryzin gene were up-regulated in the MSLC sample versus the SFC sample. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2010-01 |
| Volume | volume44 |
| Start Page | 73 |
| End Page | 83 |
| ISSN | 1349-6115 |
| language | English |
| File Version | publisher |
| NAID | 120002309053 |
| JaLCDOI | 10.18926/19961 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_44_69.pdf |
| Author | Nekado, Kenta| Kato, Hidehiro| Nogami, Yasuyuki| Morikawa, Yoshitaka| |
| Abstract | Recently, pairing–based cryptographies have attracted much attention. For fast pairing calculation, not only pairing algorithms but also arithmetic operations in extension field should be efficient. Especially for final exponentiation included in pairing calculation, squaring is more important than multiplication. This paper proposes an efficient squaring algorithm in extension field for Freeman curve. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2010-01 |
| Volume | volume44 |
| Start Page | 69 |
| End Page | 72 |
| ISSN | 1349-6115 |
| language | English |
| File Version | publisher |
| NAID | 120002309070 |
