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42 巻, 5 号
選択された号の論文の8件中1～8を表示しています
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ナノへの挑戦鈴木 久男2005 年 42 巻 5 号 p. 311
発行日: 2005/05/10
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (2386K) -
村田 憲司, 福井 武久, 阿部 浩也, 内藤 牧男, 野城 清2005 年 42 巻 5 号 p. 312-316
発行日: 2005/05/10
公開日: 2010/04/30
ジャーナル フリーNiO/Y2O3-stabilized ZrO2 (YSZ) composite particles for solid oxide fuel cell (SOFC) anode was fabricated by an advanced mechanical method using an attrition type particle composing machine in dry ambient. In this study, two sets of composite particles with different mixing time were prepared. Structure of the composite particles was markedly influenced by the mixing time since the morphology of the resultant Ni/YSZ cermet anode changed with the mixing time. Then, the relationship between the structure of composite particles and the properties of the Ni/YSZ cermet anode were examined. When the composite particles processed with mixing time of 5min were used, the cermet anode showed lower electrical performance at both 800°C and 1000°C. On the other hand, the longer processed composite particles (30min) resulted in higher electrical performance. The difference of anode performances was explained by the change in cermet morphology associated with the mechanical processing time. These results suggested that the mechanical processing for NiO/YSZ composite particles significantly influenced SOFC anode performance.抄録全体を表示PDF形式でダウンロード (4612K) -
和田 匡司, 神田 英輝, 畑 光彦, 牧野 尚夫, 金岡 千嘉男2005 年 42 巻 5 号 p. 317-323
発行日: 2005/05/10
公開日: 2010/04/30
ジャーナル フリーIn this study, hardening phenomena of coal ash beds in high-humidity condition are examined. We employ a diffusion simulation in clarifying the distribution of condensed water in coal ash beds, in which water vapor is absorbed into sulfur trioxide adhered on the surface of coal ash particles. Aqueous sulfuric acids solution formed by the absorption is in equilibrium with the ambient water vapor. The diffusion rate of water vapor is proportional to the difference between the pressure and ambient water vapor pressure. The simulation successfully describes the results of previous experiment, at a constant temperature, with the variations in the equilibrium moisture and particle diameter of coal ash. Moreover, it is clarified that the relationship between water content and hardening phenomena is very similar for various coal ashes, with a correction of particle diameter of coal ash and the volume of condensate bridging between particles.抄録全体を表示PDF形式でダウンロード (821K) -
羽多野 重信, 中村 展之, 小林 信介, 小林 潤, 板谷 義紀, 森 滋勝2005 年 42 巻 5 号 p. 324-329
発行日: 2005/05/10
公開日: 2010/04/30
ジャーナル フリーA new process for dry powder inhalation (DPI) using a spouted bed type binderless granulation for cohesive fine powders was investigated. The dry powder inhalation requires high flowability and dispersibility of powders so as to be dispersed easily into particles with 0.5 to 7μm in aerodynamic diameter during the inhalation. Actual medicines were used for the raw material in the granulation. The compressive strength of the granule measured by particle hardness tester GRANO was very small. The dispersibility of granules was measured by the cascade impactor. As a result, the produced granules by the granulation method had high dispersibility and the dispersion was satisfactory for DPI. Moreover, the median diameter of granules could be controlled by changing the initial sieving condition of raw powder.抄録全体を表示PDF形式でダウンロード (4472K) -
堀田 禎, 松尾 陽太郎, 阿部 浩也, 内藤 牧男2005 年 42 巻 5 号 p. 330-332
発行日: 2005/05/10
公開日: 2010/04/30
ジャーナル フリーThe effect of cyclic number of CIP of granule bed on the properties of green and its sintered body was examined. Two types of slurries were employed to make different properties of granules. Both granules were uni-axially pressed, dewaxed and then prepared by CIP. The green density increased with cyclic number of CIP. However, the density and fracture toughness of resultant ceramics were not influenced by the cyclic number of CIP. On the other hand, the fracture strength of ceramics increased with cyclic number of CIP. It was ascribed to the large defect in the sintered specimen.抄録全体を表示PDF形式でダウンロード (2525K) -
岡本 浩一2005 年 42 巻 5 号 p. 333-341
発行日: 2005/05/10
公開日: 2010/04/30
ジャーナル フリーThe lung is an attractive organ to administer proteins and peptides, which are poorly absorbed from the gastro-intestinal tract. Several chemicals and enzyme inhibitors have been examined as pulmonary absorption enhancers. A combination of insulin powder and citric acid powder showed improved hypoglycemic activity without deteriorating effect of citric acid on insulin stability. Supercritical fluids have recently been applied for producing powders for inhalation. The insulin powder prepared by supercritical carbon dioxide process significantly decreased blood glucose level without citric acid. The chitosan-pCMV-Luc dry powders administered intratracheally increased the luciferase activity in mouse lung compared with pCMV-Luc solutions. These results suggest that the supercritical carbon dioxide technique would be useful to prepare dry powder suitable for inhalation.抄録全体を表示PDF形式でダウンロード (7478K) -
疎水性引力を中心に石田 尚之2005 年 42 巻 5 号 p. 342-346
発行日: 2005/05/10
公開日: 2010/07/01
ジャーナル フリーDirect measurement of the interaction forces between solid surfaces in liquids has become an important technique in recent years for understanding the various microscopic phenomena that affect the behavior of fine particles in many industrial processes. The history and the development of the direct measurements of surface forces are briefly reviewed. As a practical example of the force measurements, a series of the investigations for hydrophobic attraction, which is the interaction between hydrophobic surfaces in aqueous solution, using an atomic force microscope is introduced.抄録全体を表示PDF形式でダウンロード (4050K) -
2005 年 42 巻 5 号 p. 356-357
発行日: 2005/05/10
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (4764K)
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