result 248 件
| Author | Ido, Yukio| |
|---|---|
| Published Date | 1992-12 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume104 |
| Issue | issue11-12 |
| Content Type | Journal Article |
| Author | Watanabe, Seigo| |
|---|---|
| Published Date | 1992-12 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume104 |
| Issue | issue11-12 |
| Content Type | Journal Article |
| Author | Tamai, Mamoru| |
|---|---|
| Published Date | 1992-12 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume104 |
| Issue | issue11-12 |
| Content Type | Journal Article |
| Author | Tamai, Mamoru| |
|---|---|
| Published Date | 1992-12 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume104 |
| Issue | issue11-12 |
| Content Type | Journal Article |
| Author | Nakai, Miyoko| |
|---|---|
| Published Date | 1991-08 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume103 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| Author | Sugano, Hisashi| |
|---|---|
| Published Date | 1994 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/14081 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_41_1_20.pdf |
| Author | Imamura, Takuji| Konishi, Masami| Imai, Jun| |
| Abstract | In this paper, we propose a simultaneous optimization method for inventory control and production planning problem for a chemical batch plant. The plant consists of blending process, intermediate storage tanks and filling process. In the proposed method, the original problem is decomposed into production planning sub-problem and inventory control sub-problem. Then the decision variables are optimized by alternately solving each sub-problem. The solution of the proposed method is compared with that of centralized optimization method. The effectiveness of the proposed method is investigated from numerical computational results. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2007-01 |
| Volume | volume41 |
| Issue | issue1 |
| Start Page | 20 |
| End Page | 30 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308626 |
| Author | Takeo, Masahiko| |
|---|---|
| Published Date | 1993-02-27 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue1-2 |
| Content Type | Journal Article |
| Author | Namba, Kunihiro| |
|---|---|
| Published Date | 1993-02-27 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue1-2 |
| Content Type | Journal Article |
| Author | Kitamura, Tomoki| |
|---|---|
| Published Date | 1993-10 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue9-10 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/ESR/13957 |
|---|---|
| FullText URL | ESR_1_27.pdf |
| Author | Okano, Osamu| Nishiya, Nanayo| Kagami, Hiroo| |
| Abstract | Rb-Sr isotopic study as well as petrologic investigations have been done on sixteen individul chondrule samples separated from the Allegan (H5) chondrite. The Rb-Sr chondrule isochron does not define a very precise age (4.42±0.17 Ga) and 87Sr/86Sr initial ratio (0.6997±0.0014) due to the very small variation in Rb/Sr ratio for the chondrules, whereas the model ages give a much more speciffic value (4.42±0.02 Ga). These ages may probably be indicative of the time of primary process (es) (e.g. chondrule formation) rather than secondary (metamorphic reheating) or tertiary (shock heating) processes in and/or on the H-chodrite parent body (or bodies). Chemical compositions of oliveines (Fa=17.5mol%, mean deviation (MD)=1.3%) and orthopyoxenes (Fs=15.4mol%, MD=3.2%) are moderately homogenized among the chondrules, while certains chemically uneguilibrated features are also distinctly preserved in this chondrite. Homogeneity of the mineral compositions, therefore, could not have been caused by thermal metamorphism but were probably inherited from processes prior to aggregation of the components. The overall implications of the chondrule isochron and model ages in relation to the petrological features and in comparison with Rb-Sr data of other chondrites of different chemical groups and petrologic types are discussed. |
| Keywords | chondrule age Rb-Sr isochron Allegan H- chondrite meteorite metamorphism olivine pyroxene |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 1994-09-20 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 27 |
| End Page | 36 |
| ISSN | 1340-7414 |
| language | English |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310261 |
| JaLCDOI | 10.18926/ESR/13907 |
|---|---|
| Title Alternative | Chemical and Rb-Sr isotopic features of the shock-melted chondrite Yamato-793533 |
| FullText URL | ESR_6_29.pdf |
| Author | Okano, Osamu| Katayama, Hiroko| Nakamura, Noboru| |
| Abstract | The Sr isotopic compositions and Rb and Sr abundances, as well as major element abundances in olivine, pyroxenes and glass, were determined for a chip and 21 fractions separated from a shock-melted chondrite Yamato-793533, a dark-colored, porous stone with glassy texture. Two lithologies were recognized for the 1.5g specimen studied (Yamato-793533, 67) ; L (Main portion) and L to LL (Dark portion) chondritic in terms of chemical compositions of olivine and pyroxenes. The chemical compositions of glass are relatively homogeneous (SiO2=67-77%) compared to those of other ordinary chondrites, suggesting a moderate cooling rate after shock-melting. The data points for fractions do not foem any isochron in a 87Rb/86Sr vs. 87Sr/86Sr diagram. However, it is noted that six out of nine points for the dark portion plot around a 1.2 Ga line, while most of points for the main portion plot around a 4.55 Ga chondrite isochron. The observed difference could be responsible for difference in melting degrees between the two portions. Similar Rb-Sr features have been found among shock-melted Yamato-79 LL-chondrites which are considered to be paired stones experienced the same shock-melting event at 1.2 Ga. Consequently, the Rb-Sr systematics as well as petrologic features strongly suggest that Yamato-793533 is a member of a series of the shock-melted Yamato-79 LL-chondrites. |
| Keywords | LL-chondrite Shock-melting Sr isotope |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 1999-09-20 |
| Volume | volume6 |
| Issue | issue1 |
| Start Page | 29 |
| End Page | 38 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310391 |
| Author | Yamagata, Koichi| |
|---|---|
| Published Date | 1993-08 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/ESR/13851 |
|---|---|
| Title Alternative | ガーナ, ビルム・ダイヤモンド産地のアクァティア地域に分布する沖積層の重鉱物分析 |
| FullText URL | ESR_12_7.pdf |
| Author | Samuel Dampare| Daniel Asiedu| Bruce Banoeng-yakubo| Shibata, Tsugio| |
| Abstract | Heavy mineral analysis was carried out on Pliocene to Recent alluvial sediments from the Birim diamondiferous field od Ghana. The main objective of the study was to examine the mineral composition of heavy fractions in order to identify : (1) the heavy mineral assenblage that occur in the sediments, (2) particular diamond indicator minerals associated with the diamonds, and (3) the provenance of the alluvial sediments. The heavy minerals are essentially composed of staurolite, ilmenite and magnetite in varying proportions, with trace amounts of leucoxene, rutile, garnet and zircon. The heavy mineral assenblage and chemical composition of ilmenite and gamet suggest their derivation from phyllites and schists which reflect directly the composition of the basement rocks developed in the study area. The absence of diamond indicatior minerals such as apatite, pyrope garmet, chromian spinel, and picroilmenite in the heavy fraction is unlikely to be due to their destruction during intense weathering and/or diagenesis but rarher their non-occurrence in the area. |
| Keywords | Heavy minerals provenance sediments diamonds Ghana |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2005-12-31 |
| Volume | volume12 |
| Issue | issue1 |
| Start Page | 7 |
| End Page | 14 |
| ISSN | 1340-7414 |
| language | English |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310657 |
| Author | Iwaya, Kazuo| |
|---|---|
| Published Date | 1994-10 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue9-10 |
| Content Type | Journal Article |
| Author | Ono, Yoshiro| |
|---|---|
| Published Date | 1994-02 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue1-2 |
| Content Type | Journal Article |
| Author | Murase, Toshio| |
|---|---|
| Published Date | 1994-08 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| Author | Hiyama, Junichirou| |
|---|---|
| Published Date | 1995-10-31 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume107 |
| Issue | issue9-10 |
| Content Type | Journal Article |
| Author | Fukazawa, Masako| |
|---|---|
| Published Date | 1998-06-25 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume110 |
| Issue | issue1-6 |
| Content Type | Journal Article |
| Author | Liu, Qingping| |
|---|---|
| Published Date | 2002-05-30 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume114 |
| Issue | issue1 |
| Content Type | Journal Article |
