Nano-size Ni particles prepared by laser ablation in water were used as catalyst for synthesizing carbon nanotubes by a thermal CVD method. The width of synthesized CNT was almost the same as the size of the Ni particles. It was found that hydrogen-reduction treatment of the Ni particles was necessary to obtain nanotubes, suggesting that surface of the colloidal particles were oxidized in the laser ablation process.
{"title":"Synthesis of carbon nanotube using Ni catalyst prepared by laser ablation in water","authors":"M. Tsuji, Toshinori Matsuzaki, T. Tsuji","doi":"10.15017/16707","DOIUrl":"https://doi.org/10.15017/16707","url":null,"abstract":"Nano-size Ni particles prepared by laser ablation in water were used as catalyst for synthesizing carbon nanotubes by a thermal CVD method. The width of synthesized CNT was almost the same as the size of the Ni particles. It was found that hydrogen-reduction treatment of the Ni particles was necessary to obtain nanotubes, suggesting that surface of the colloidal particles were oxidized in the laser ablation process.","PeriodicalId":11722,"journal":{"name":"Engineering sciences reports, Kyushu University","volume":"48 1","pages":"365-367"},"PeriodicalIF":0.0,"publicationDate":"2003-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78436031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Ianovski, K. Munakata, A. Koga, Y. Narisato, H. Okabe, M. Nishikawa, 宗像 健三, 西川 正史
{"title":"Recovery of Carbon Dioxide in Nuclear Fuel Reprocessing Cycle","authors":"D. Ianovski, K. Munakata, A. Koga, Y. Narisato, H. Okabe, M. Nishikawa, 宗像 健三, 西川 正史","doi":"10.15017/16690","DOIUrl":"https://doi.org/10.15017/16690","url":null,"abstract":"","PeriodicalId":11722,"journal":{"name":"Engineering sciences reports, Kyushu University","volume":"17 1","pages":"197-201"},"PeriodicalIF":0.0,"publicationDate":"2003-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89970723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Using geopotential anomaly fields and distribution patterns of the North Pacific Tropical Water and the North Pacific Intermediate Water, the circulation in the upper and intermediate layers of the South China Sea is described. In summer, three eddies are found in the upper layer, while a small anti-cyclonic circulation exists in the intermediate layer in the central part of the South China Sea. In winter, a cyclonic circulation occupies the entire South China Sea basin in the upper Iayer, while the existence of a double-gyre pattern is suggested in the intermediate layer.
{"title":"The Comparison between the Geostrophic Current Field and the Water Mass Distribution in the South China Sea","authors":"T. Namba, A. Isobe, Y. Kyozuka","doi":"10.15017/16606","DOIUrl":"https://doi.org/10.15017/16606","url":null,"abstract":"Using geopotential anomaly fields and distribution patterns of the North Pacific Tropical Water and the North Pacific Intermediate Water, the circulation in the upper and intermediate layers of the South China Sea is described. In summer, three eddies are found in the upper layer, while a small anti-cyclonic circulation exists in the intermediate layer in the central part of the South China Sea. In winter, a cyclonic circulation occupies the entire South China Sea basin in the upper Iayer, while the existence of a double-gyre pattern is suggested in the intermediate layer.","PeriodicalId":11722,"journal":{"name":"Engineering sciences reports, Kyushu University","volume":"19 1","pages":"315-321"},"PeriodicalIF":0.0,"publicationDate":"2000-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82532808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy infrastructures in the future urban areas need to manage various profiles of energy demand and supply required within the area through the year, also allowing long-term flexibility for utilizing new energy systems. To improve overall efficiency of energy use in the urban areas, satisfying the above requirements, underground space utilization for the urban energy infrastructures that enable a flexible network of distributed-type facilities could be one of appropriate options. In order to realize this underground network concept, a network planning approach to evaluate proper energy balance is essential. Also, categorizing and classifying transferred items and depth of underground space to be utilized will be valuable in establishing a set of data on the first tentative plan of the network. The discussed network routes covering a 700km length as a total, consists of a combination of a circulation-shaped network and a radiation-shaped network, assuming a typical urban area as the base for the study. This paper concludes that an appropriate planning with long-term flexibility for new energy systems enables the underground energy infrastructures that improve the energy efficiency and the environmental conditions in the urban areas.
{"title":"Energy Infrastructures and Underground Space Utilization","authors":"R. Kobayashi, M. Nishikawa","doi":"10.15017/16593","DOIUrl":"https://doi.org/10.15017/16593","url":null,"abstract":"Energy infrastructures in the future urban areas need to manage various profiles of energy demand and supply required within the area through the year, also allowing long-term flexibility for utilizing new energy systems. To improve overall efficiency of energy use in the urban areas, satisfying the above requirements, underground space utilization for the urban energy infrastructures that enable a flexible network of distributed-type facilities could be one of appropriate options. In order to realize this underground network concept, a network planning approach to evaluate proper energy balance is essential. Also, categorizing and classifying transferred items and depth of underground space to be utilized will be valuable in establishing a set of data on the first tentative plan of the network. The discussed network routes covering a 700km length as a total, consists of a combination of a circulation-shaped network and a radiation-shaped network, assuming a typical urban area as the base for the study. This paper concludes that an appropriate planning with long-term flexibility for new energy systems enables the underground energy infrastructures that improve the energy efficiency and the environmental conditions in the urban areas.","PeriodicalId":11722,"journal":{"name":"Engineering sciences reports, Kyushu University","volume":"19 1","pages":"183-192"},"PeriodicalIF":0.0,"publicationDate":"2000-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81650495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Emission spectra resulting from the reactions of He (23S) , He', and He2+ with S02, SOC12, SOBr2, S02C12, and S02FCI have been measured in a helium flowing afterglow in order to examine dissociative-ionization processes leading to SO' (A2IIi) . Although the SO+ (A2Hi'X2Hr) emission system was observed from the reactions of He' with S02, SOC12, and S02C12, it was absent from those of He' with SOBr2 and S02FCI. The vibrational distributions of SO" (A) decreased nearly exponentially with increasing v' for all the three reactions. The effective vibrational temperatures of SO'(A) were determined to be 3320A}230, 4620A}760, and 3100A}300 K for S02, SOC12, and S02C12, respectively.
He (23S)， He'和He2+与S02, SOC12, SOBr2, S02C12和S02FCI反应产生的发射光谱在氦气流动的余辉中进行了测量，以研究导致SO' (A2IIi)的解离电离过程。He'与so02、SOC12和S02C12反应中存在SO+ (A2Hi' x2hr)发射体系，但He'与SOBr2和S02FCI反应中没有。三种反应的SO′(A)的振动分布随v′的增大而呈指数型减小。so02、SOC12和so02c12的有效振动温度分别为3320A}230、4620A}760和3100A}300 K。
{"title":"Vibrational Distributions od SO^+(A^2Π_i) Produced from Dissociative Ionization of SO-Containing Molecules in a Helium Flowing Afterglow","authors":"M. Tsuji, I. Murakami, Shinji Okano, Y. Nishimura","doi":"10.15017/16548","DOIUrl":"https://doi.org/10.15017/16548","url":null,"abstract":"Emission spectra resulting from the reactions of He (23S) , He', and He2+ with S02, SOC12, SOBr2, S02C12, and S02FCI have been measured in a helium flowing afterglow in order to examine dissociative-ionization processes leading to SO' (A2IIi) . Although the SO+ (A2Hi'X2Hr) emission system was observed from the reactions of He' with S02, SOC12, and S02C12, it was absent from those of He' with SOBr2 and S02FCI. The vibrational distributions of SO\" (A) decreased nearly exponentially with increasing v' for all the three reactions. The effective vibrational temperatures of SO'(A) were determined to be 3320A}230, 4620A}760, and 3100A}300 K for S02, SOC12, and S02C12, respectively.","PeriodicalId":11722,"journal":{"name":"Engineering sciences reports, Kyushu University","volume":"43 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"1999-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87009949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1998-06-01DOI: 10.1016/s0140-6701(99)96469-x
福田 研二, 藤本 登, 片山 善順, 饒 燕飛, K. Fukuda, N. Fujimoto, Yoshinori Katayama, Yang Fei Rao
{"title":"A method of constructing best-mixed power generation systems reflecting public preference","authors":"福田 研二, 藤本 登, 片山 善順, 饒 燕飛, K. Fukuda, N. Fujimoto, Yoshinori Katayama, Yang Fei Rao","doi":"10.1016/s0140-6701(99)96469-x","DOIUrl":"https://doi.org/10.1016/s0140-6701(99)96469-x","url":null,"abstract":"","PeriodicalId":11722,"journal":{"name":"Engineering sciences reports, Kyushu University","volume":"3 1","pages":"19-24"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78854865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Previously, 2,5-diphenylpyridines, which is annelated at 3 and 4 positions with a heteroaromatic ring such as 1,2,5-oxa-, 1,2,5-thia-, and 1,2,5-selena-diazole, thiophene, IV-methylpyrrole,•1,2,3-triazole, pyrazole, imidazole, pyridine, and pyrazine, were prepared. These compounds are fluorescent in a solid state and are of interest as a light emitting material for an electroluminescence devicei). Earlier, it was reported that the reaction of 3,4-dibenzoyl-1,2,5-oxadiazole-2-oxide (la) with hydrazine dihydrochloride in refluxing methanol gave 1,2,5-oxadiazolo[3,4-d]pyridazine-1-oxide 2a2). In the reaction with an excess amount of hydrazine, it was expected that the deoxygenation of 1-oxide 2 might occur to afford 1,2,5-oxadiazolo[3,4-d] pyridazine 3, which is an azaanalogue of strongly fluorescent 4,7-diaryl-1,2,5-oxadiazolo[3,4-d] pyridinei'.
{"title":"Reaction of 3,4-Diaroyl-1,2,5-oxadiazole-2-oxide with Hydrazine Hydrate","authors":"Kazufumi Takahashi, 高橋 和文, A. Torii, 鳥井 昭美, K. Kamata, 鎌田 吉之助, Toshimi Sugino, 杉野 紀三, カズフミ タカハシ, アキヨシ トリイ, トシミ スギノ, キチノスケ カマタ","doi":"10.15017/17385","DOIUrl":"https://doi.org/10.15017/17385","url":null,"abstract":"Previously, 2,5-diphenylpyridines, which is annelated at 3 and 4 positions with a heteroaromatic ring such as 1,2,5-oxa-, 1,2,5-thia-, and 1,2,5-selena-diazole, thiophene, IV-methylpyrrole,•1,2,3-triazole, pyrazole, imidazole, pyridine, and pyrazine, were prepared. These compounds are fluorescent in a solid state and are of interest as a light emitting material for an electroluminescence devicei). Earlier, it was reported that the reaction of 3,4-dibenzoyl-1,2,5-oxadiazole-2-oxide (la) with hydrazine dihydrochloride in refluxing methanol gave 1,2,5-oxadiazolo[3,4-d]pyridazine-1-oxide 2a2). In the reaction with an excess amount of hydrazine, it was expected that the deoxygenation of 1-oxide 2 might occur to afford 1,2,5-oxadiazolo[3,4-d] pyridazine 3, which is an azaanalogue of strongly fluorescent 4,7-diaryl-1,2,5-oxadiazolo[3,4-d] pyridinei'.","PeriodicalId":11722,"journal":{"name":"Engineering sciences reports, Kyushu University","volume":"10 1","pages":"361-365"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80340091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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