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The Corrosion Study of the Intermediate Nuclear Spent Fuel Storage Facility
Get PDFIn Japan, many facilities are constructed along the seashore and the nuclear power plants which need cooling water are also constructed along the seashore. In addition, spent fuel intermediate storage facilities are planned to be constructed in the Sea of Japan coast area. In pursuing sea salt aerosol-induced corrosion research, it was necessary to perform corrosion tests under a certain set of environmental conditions since corrosion of structures was known to be highly sensitive to environmental factors. To improve the corrosive condition, we considered to use filter. The definition of filter goodness on this study is that the amount of sea salt reduction is large as compared with pressure loss. From this view point, we carried out the filter performance test. From this tests result, we confirmed that our selected filters have good performance.departmental bulletin pape
Evaluation of Total Phosphorus Concentration in Lake Kitagata using Multi-Spectral Satellite Images
Get PDFThe purpose of this study is to develop a procedure for estimating the total phosphorus concentration of highly eutrophic lakes from multispectral satellite images. The test site is Lake Kitagata which is a brackish, eutrophic lake and has high chlorophyll-a concentration. The correlation coefficients between total phosphorus concentration and chlorophyll-a concentration (field survey data provided by Fukui Prefectural Institute of Public Health and Environmental Science) have been calculated to obtain the procedure for estimating total phosphorus concentration. The preliminary results indicate that the correlation coefficients between them in the water area with high chlorophyll-a concentration, are very high. It is, therefore, possible to obtain the total phosphorus concentration from chlorophyll-a concentration which can be obtained using multi-spectral satellite images.departmental bulletin pape
Structural Chemistry of the Cyclodextrin Inclusion Complexes of Physiologically Active Compounds –X-ray Structural Studies on l-menthol-β-cyclodextrin Complex
Get PDFThe crystal structure of an inclusion complex of β-cyclodextrin with l-menthol has been determined by X-ray diffraction method. The crystals were very unstable in air, so they were sealed in thin-walled glass capillary tubes with small amount of water on the bottom of them. The complex crystallized in monoclinic, P21 with a=15.411(1), b=32.798(1), c=15.424(1)Å, β=102.28(1)°. The unit cell includes two molecules composed of two β -cyclodextrins and two l-mentols. Dimeric β -cylrodextrins make the infinite channel to include hydrophobic l-menthol molecules in it.departmental bulletin pape
Coefficient of Friction in Diamond-Like Carbon Films
Get PDFThe pin-on-plate and the pin-on-disk friction test were carried out to clarify the mechanism of low friction coefficient of diamond like carbon (DLC) films. As the test piece, six kinds of commercially available DLC coated specimens were prepared. The hydrogen content of DLC was determined by elastic recoil detection analysis (ERDA) method using 2 MeV of He ion beam from the tandem accelerator. Pin-on-plate type friction test was carried out with the combination of DLC coated pin and high-speed tool steel plate. As a result of the friction test, it became clear that in the case of these combinations, all DLC show a low coefficient of friction of 0.08 - 0.09 in initial term, and it rises with time. In the case of DLC with a low hydrogen content, debris of heat-affected DLC was not observed in and around the wear truck of plate. These tendency were different from the conventional experiment that coated DLC to a plate. As a general tendency in this experiment, harder DLC film maintained lower coefficient of friction. From this result, it was estimated that DLC with low abrasion maintain high contact pressure and develop a low coefficient of friction.departmental bulletin pape
Considerations of effective uses of nonexplosive demolition agent
Get PDFWhere explosives prohibited to crush rock or concrete by law, the nonexplosive demolition agent is often employed. This paper describes a basic research on the demolish work of bedrock on the road shoulder or a concrete structure that became useless efficiently by using the nonexplosive demolition agent. That is, it has aimed to find the relation between the compressive or tensile strength of the material and pressure on the bore hole when a crack occurs.departmental bulletin pape
Non-contact Quantitative Microwave Detection of Radiation Induced Degradation of Polymers (II)
Get PDFIn 2011, there are 54 commercial nuclear power plants in Japan. There are 20 nuclear power plants which are working for 30 years or more. It is very important to measure the aged deterioration of the cable used in those nuclear power plants. Generally, degradation of a cable was measured by the tensile test. It was difficult to measure an electrical property quickly and nondestructively. We developed the nondestructive measurement technology of cable degradation which used microwave technology.departmental bulletin pape
Study on Indoor Noh Stage Lighting in the Hokuriku Region
Get PDFThe authors have investigated lighting conditions in Noh stages in the Hokuriku region. Now, lighting effects of three indoor Noh stages, i.e. Fukui Noh theater, Ishikawa prefectural Noh theater and Young men's House Noh stage in Takaoka city have been investigated in terms of illuminances and luminances in the play areas. The purpose of this paper is to consider a relation between lighting effects and lighting plans and conditions which have been adopted in these Noh stages.departmental bulletin pape
A Study on Honorific Between Japanese and Chinese
Get PDFA comparative study on honorific between Japanese and Chinese especially on its concepts, classification, origin and change etc. was accomplished. The important achievements are summarized as follows: 1. The honorific concept and its purpose are basically in common between Japanese and Chinese. 2. The origin of Chinese honorific is completely different from the one of Japanese honorific. 3. The classification of Japanese honorific is similar to Chinese one in some aspects but much more systematic. 4.Both the Japanese honorific and Chinese honorific change as the times change. The former is represented mainly in language form, skills and application, and however the later focused on its application conditions.departmental bulletin pape
A Trial of Introductory Education for Computer Programming using Micro Robots
Get PDFAn introductory education for computer programming using Micro Robots was suggested, and experience learning of the programming was performed for high school students who are quite beginners of the programming. Course evaluation which was taken from the students was statistically estimated, and the result obtained by the estimation was discussed.departmental bulletin pape
Comparison of Japanese and Chinese about the changing of the direction of grace in the relationship to giving and accepting With a focus on grants verb of giving and accepting in Japanese
Get PDFIn the relationship to the direction of giving and accepting, both Japanese and Chinese have common and different points. So they were researched in 『Comparison of Japanese and Chinese about relationship's direction of giving and accepting』 . And at the centre of these points of difference what stands out is the changing of the direction of grace. The saying of「A helps B to do something 」 is normal and it has a patronizing sense but the condescending tone is absent in Chinese. On the other hand, in Japanese, in order not to belittle the person you are talking to and thus feel uncomfortable, you must change the direction of grace with the expressions about relationship of giving and accepting. To be certain, in 『Comparison of Japanese and Chinese about relationship's direction of giving and accepting』,the differences about the changing of the direction of grace were researched from the point of 「～(sa)se te mo ra u/i ta da ku」, and so they will be looked at later from otherpoints of view in this paper.departmental bulletin pape