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Sample records for keisha tokusei kobunshi

  1. Study on property-gradient polymer electrolyte for rechargeable lithium batteries; Lithium niji denchi no tame no keisha tokusei kobunshi denkaishitsu no sosei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kokumi, Z; Kanemura, S; Inaba, M; Takehara, Z; Yao, K; Uchimoto, Y [Kyoto University, Kyoto (Japan)

    1997-02-01

    This paper describes the fundamental experiments for creating property-gradient polymer electrolyte for rechargeable lithium batteries. The rechargeable lithium battery is composed of an anodic composite agent section with high ion conductivity, a separator equivalent section with high mechanical strength (high bridging degree), and a section surpressing the precipitation of metal lithium by contacting with it. The continuous property-gradient polymer electrolyte was tried to be synthesized by means of the plasma polymerization method. As a result, plasma polymerization electrolyte with high ion conductivity could be prepared from the liquid phase by using a monomer with low vapor pressure. Porous material simulating the anodic composite agent was impregnated by the monomer, which was plasma-polymerized. As a result, it was found that the bridging degree decreased from the surface towards the inside of the plasma-polymerized porous material. In addition, polymer was prepared using fluorine-base monomer. Thus, LiF thin film could be prepared through the reaction between the polymer and metal lithium. 3 figs.

  2. Influence of angle of inclination on power of solar module; Taiyo denchi module no keisha kakudo to shutsuryoku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Tsutsumi, K.; Nishitani, M. [Dai Ichi University, College of Technology, Kagoshima (Japan)

    1997-11-25

    Experiment/study were conducted on the influence of angle of inclination on output of solar modules. In the experiment, changing the angle of inclination of the photovoltaic module installed on the top of school building to 0, 30, 60 and 90 degC, the global radiation on an inclined surface was measured by pyranometer equipped with the module, and at the same time output characteristics were measured by I-V curve tracer. In the I-V curve tracer, voltage, current, and output capability diagram are illustrated automatically changing bias voltage to get the maximum output. The global radiation on an inclined surface and the maximum output indicated an almost proportional relation and were expressed in a recursion method. Moreover, measurement of the global radiation is usually conducted using the amount of global radiation on a horizontal surface, and the global radiation on an inclined surface is calculated as a sum of the direct solar radiation amount and the sky solar radiation amount after determining a penetration rate by the relational equation. By calculating the global radiation on an inclined surface, it becomes possible to calculate the maximum output of photovoltaic modules by this recursion method. 1 ref., 6 figs., 1 tab.

  3. Assessment report on the development of functionally inclined material; Keisha kinosei zairyo no kaihatsu hyoka hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Concerning a project whose aim is to develop heat resistant engine members through the application of the concept of functionally inclined materials, deliberation and assessment are made of the meaning of its implementation, validity of the research program, research achievement, etc. The project deals with a specimen, diameter 150mm or more and thickness 5mm or more, built of a zirconia/stainless steel-based functionally inclined material, and its goal is to develop technologies for optimizing the baking process for the said specimen, baking system and related devices, assessment technique, tribological assessment technique, etc., and it is inferred that these targets are reasonable. As the result of this research, an energy-efficient (power consumption reduced to 1/3 to 1/5) practical rapid sintering system is constructed. Basic data are collected relative to the tribology of the functionally inclined material, and it is proved that it is feasible to use the material for engine members. The process technology, assessment technology, and devices developed under this project are the first in the world, and are highly evaluated. (NEDO)

  4. Mongolian coal liquefaction test; Mongorutan no ekika tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Yamamoto, H.; Kubo, H. [Mitsui SRC Development Co. Ltd., Tokyo (Japan); Tsedevsuren, T. [National Research Center of Chemistry and Technology of Coal in Mongoria (Mongolia)

    1996-10-28

    This paper describes the results of liquefaction tests of Mongolian coals using an autoclave and a flow micro reactor. Uvdughudag coal, Hootiinhonhor coal, and Shivee-Ovoo coal were used for liquefaction tests with an autoclave. Oil yields of Uvdughudag and Hootiinhonhor coals were 55.56 wt% and 55.29 wt%, respectively, which were similar to that of Wyoming coal. Similar results were obtained, as to produced gas and water yields. These coals were found to be suitable for coal liquefaction. Lower oil yield, 42.55 wt% was obtained for Shivee-Ovoo coal, which was not suitable for liquefaction. Liquefaction tests were conducted for Uvdughudag coal with a flow micro reactor. The oil yield was 55.7 wt%, which was also similar to that of Wyoming coal, 56.1 wt%. Hydrogen consumption of Uvdughudag coal was also similar to that of Wyoming coal. From these, Uvdughudag coal can be a prospective coal for liquefaction. From the distillation distribution of oil, distillate fraction yield below 350{degree}C of Uvdughudag coal was 50.7 wt%, which was much higher than that of Wyoming coal, 35.6 wt%. Uvdughudag coal is a coal with high light oil fraction yield. 2 figs., 5 tabs.

  5. Ophthalmic ester removal in the agar state giant molecule; Kantenjo kobunshi de futarusan esuteru jokyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-10-01

    Matsubara professors of Tokyo College of Pharmacy developed the technique which simply removed phthalic ester from the solution. The property in which the giant molecule called the poly N isopropyl acrylamide cohered like the agar, when 32 degrees C is exceeded, was utilized, and the phthalic ester of poor solubility is taken in the flocculation stage. It is expected with that it can be utilized for wastewater treatment and solicitation quantity thing analysis in the environment. (translated by NEDO)

  6. Biodegradable polymeric foam with food waste; Shokumotsu zansa wo mochiita seibunkai kobunshi hahhotai

    Energy Technology Data Exchange (ETDEWEB)

    Mishima, Kenji; Matsuyama, Kiyoshi; Yamauchi, Satoru; Takarabe, Shin' ichi

    1999-09-01

    A huge amount of food waste such as tea and beer dregs becomes a serious problem because of the lack of industrial waste space in Japan. On the other hand, the new polymeric foam is expected to be developed since the dangerous pollution of endorphin disrupters from industrial polymer foam is pointed out. In this work, we try to develop the biodegradable polymeric foam using the tea and beer dregs as secondary resources. And we examined the degradability of biodegradable polymer in the hydrothermal water for fundamental knowledge of polymeric foam production. We used an extruder equipped with a high pressure device to make the polymeric foam. And we examined the effect of the component ratio on the foam properties, foaming rate, strength, shrinkage rate, water-resistant. As a result, it was found that the amount of polymer is effective of quality of form and the biodegradability can be controlled by the amount of water and temperature. (author)

  7. Survey and research on precision polymerization polymeric materials; Seimitsu jugo kobunshi zairyo ni kansuru chosa kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Survey and research on the precision control of primary structure of polymeric materials and the precision evaluation technology have been conducted to develop advanced polymeric materials. It is proposed that the three basic processes of polymer synthesis, i.e., addition, condensation, and biomimesis, in forming the precision polymerization skeleton are to be covered through a centralized joint research effort with participation of industry, academia, and the government institute and under the leadership of researchers from academic institutions as the team leaders. For the study of technology trends, international conferences held in UK, Germany, and Hawaii are introduced, and domestic meetings, i.e., Annual Polymer Congress and Polymer Conference, are summarized. In addition, Precision Polymerization Forum and International Workshop on Precision Polymerization were held. The basic studies include a quantum-chemical elucidation of the elementary process in polymerization reaction, time-resolved analysis of polymerization process and polymer properties, synthesis of polymers with controlled microstructures by coordination polymerization using metal complexes, synthesis of polymer with controlled microstructures by precision polycondensation, molecular recognition in catalyst-reaction site, and synthesis of imprinting polymers. 246 refs., 117 figs., 14 tabs.

  8. Development of symmetric composition-gradient materials including hard particles in its surface layer; Hyosobu ni koshitsu ryushi wo fukumu taishogata sosei keisha zairyo no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    Development of new materials with both thermal resistance and thermal shock resistance was studied on the basis of symmetric ceramics/metal/ceramics gradient composition. Al2O3/TiC/Ni/TiC/Al2O3 was used as material model of basic composition, and the system was selected where WC-Co system alloy hard particles were dispersed into the Al2O3 ceramic surface layer. The layered material was sintered in N2 gas atmosphere by SHS/HIP method using exothermic caused by nitriding reaction. Since cracks were generated in some specimens of 5-layer structure, improved specimens of 7-layer structure were prepared. To examine the effect of a particle size on toughness, WC-Co system alloy specimens with different particle sizes were also prepared. As a result, no cracks were found, and residual stress and fracture toughness were affected by particle size. In addition, the following were studied: technique of mass production, observation of fine structures, analysis of thermal stress, thermal shock resistance, and friction and abrasion characteristics. 13 refs., 65 figs., 15 tabs.

  9. Cable-stayed PC bridge with inclined main tower. Hachinohe port island bridge; Keisha shuto to yusuru 2 keikan renzoku PC shachokyo. Hachinoheko port island renrakykyo (kasho)

    Energy Technology Data Exchange (ETDEWEB)

    Hasegawa, A. [Hachinohe Institute of Technology, Aomori (Japan)

    1994-09-15

    The design and construction of the inclined main bridge, which is being constructed at the mouth of the Hachinohe Harbor (in Japan), are outlined in this paper. This connecting bridge has an overall length of 265.56 m, and consists of the main bridge member of asymmetric 2 cable-stayed PC bridge and the 3 cable-stayed PC box member bridge. An asymmetric design was employed for the main bridge frame to ensure the access space for small ships passing between bridge girders, easy maintenance and service, improved economy, and excellent view. The main tower is a single-pillar reinforced concrete structure with an inclination of 15{degree} and 47 m in height. Forty-eight diagonal cables are arranged so that 12 cable trains are connected to the main tower on the right and left sides respectively, and the back-stay cable structure is used for each upper 3 cable trains to improve safety against the earthquake. The main beam is made by a prestressed concrete structure with inverse trapezoidal 3-chamber frame section. This structure is superior in increasing the safety against wind. Steel tube sheet-pile well is selected for the bridge pier base, and debris layer is selected as a support layer for the base. For the construction of the lower bridge section, sand conversion through predrilling of rubble-mound and debris layer was executed. The underwater non-separative concrete and embedded type frame are used around the bridge piers and its surrounding. For the construction of the upper bridge section, steel frames are used inside the main tower to ensure the construction precision. 7 figs.

  10. Construction of cable-stayed prestressed concrete bridge, having Japan`s first independent single slanted tower; Nippon hatsu no keisha shuto wo motsu PC shachokyo no seko

    Energy Technology Data Exchange (ETDEWEB)

    Sanada, Y.; Naito, H. [Penta-Ocean Construction Co. Ltd., Tokyo (Japan); Takeuchi, H.; Mikami, T.

    1994-08-01

    In the Hachinoe Harbor, Aomori prefecture, a man-made island (Hachinoe Port Island) is being constructed by reclamation. When proceeding this undertaking plan, a construction of the Hachinoe Harbor Port Island connection bridge, which connects the man-made island with the existing harbor district, was made an urgent necessity. This connecting bridge is a bridge with a total length of 256.56m, and is constituted of two span continuous PC slanted bridge and three span continuous PC box girder bridge. This slanted bridge has become an asymmetrical structure due to several conditions coming from a plan, and moreover it has the first structural shape as a road bridge in Japan, of which main tower is 15{degree} slanted independent single tower type, there are more problems for the work execution compared with other normal slanted bridges. In addition, because it is situated in an extremely cruel environment like in the cold region and in the marine environment, a sufficient consideration is required for its design and work execution in order to insure a durability. In this report, an outline of work execution content about PC slanted bridge part currently under a construction zealously aiming at a completion in the end of the fiscal year 1994 is introduced. 2 refs., 14 figs., 4 tabs.

  11. Agglomeration and reaction characteristics of various coal chars in fluidized-bed coal gasifier; Ryudoso sekitan gas ka ronai deno sekitan no gyoshu tokusei to hanno tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Uemiya, S.; Aoki, K.; Mori, S.; Kojima, T. [Seikei University, Tokyo (Japan). Faculty of Engineering

    1996-10-28

    With relation to the coals delivered as common samples in the coal fundamental technology development project, an experimental study was conducted on agglomeration characteristics and reaction characteristics in the fluidized-bed coal gasifier. For the experiment, used was a fluidized bed gasifier inserted with a cone-shape dispersion plate with a nozzle in the center. After raising the temperature of the gasifier up to 773K, gasification was conducted sending to the gasifier air from the nozzle and steam from the dispersion plate. The mean particle diameter and gas concentration of chars were measured till the temperature reaches 1373K. As a result of the experiment, it was confirmed that the carbon conversion ratio increases with a decrease in coalification degree of the coal. Moreover, influence of the coal kind was markedly observed at the grid zone of the lower part of the bed, and it was clarified that the lower carbon content ratio the coal kind has, the faster the speed of CO formation and water gasification get. The agglomeration temperature of charcoal which is a product of the condensate is lower by as many as several hundred K than the point of softening, and it was considered to be necessary to study the relation with the temperature distribution in the bed. 3 refs., 3 figs., 1 tab.

  12. Identification of modal parameters and spatial matrix in frequency domain. Basic theory; Shuhasu ryoiki ni okeru mode tokusei to tokusei gyoretsu no dotei. Kiso riron no kento

    Energy Technology Data Exchange (ETDEWEB)

    Iwahara, M [Isuzu Advanced Engineering Center, Ltd., Tokyo (Japan); Sugiura, T; Takaiwa, H; Nagamatsu, A [Tokyo Institute of Technology, Tokyo (Japan)

    1997-10-01

    An approach is presented for the identification of spatial matrix with modal parameters in the frequency domain. Modal parameters are transformed to spatial matrix with constraints of modal vector orthogonality and characteristic equation. Adding the connecting conditions or unconnected conditions of measuring points, spatial matrix is determined by modal parameters whose number is smaller than that of dimension of spatial matrix. 9 refs., 4 figs., 2 tabs.

  13. Character of photovoltaic/thermal hybrid collector. Character analysis by numerical calculation; Taiyoko netsu hybrid collector no tokusei. Suchi keisan ni yoru tokusei kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Morita, Y; Iwawaki, T; Fujisawa, T; Tani, T [Science University of Tokyo, Tokyo (Japan)

    1997-11-25

    In order to investigate characteristics of photovoltaic (PV)/thermal hybrid collectors (PV/T{sub s}) operating under varying conditions, energy equilibrium equations have been developed for numerical calculation, and the calculated results were compared with the observed ones. The calculated characteristics are close to the observed ones, both for photoelectric conversion and heat collecting characteristics, demonstrating validity of these energy equations. It is found, by comparing characteristics of PV/T{sub A} (covered with glass) with those of PV/T{sub B} (not covered with glass), that these characteristics are greatly affected by glass cover. Maximum overall excergy levels attained are 13.29% with PV/T{sub A} and 11.48% with PV/T{sub B} under the conditions of solar radiation intensity H: 800W/m{sup 2}, ambient temperature: 20degC and wind velocity: 0.5m/s, where flow rates of heat medium are 2.0times10{sup -3} and 4.0times10{sup -3}kg/s, respectively. Thus, the PV/T{sub A} system has a higher maximum excergy efficiency than the PV/T{sub B} system. The PV/T{sub A} gives water of higher temperature, demonstrating that covering the system with glass increases maximum excergy efficiency and optimum temperature. 6 refs., 5 figs., 2 tabs.

  14. Structural study of synthetic polymers by MALDI-TOFMS; MALDI-TOFMS ni yoru gosei kobunshi no kozo kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Noguchi, K.; Hirayama, K. [Ajinomoto Co. Inc., Tokyo (Japan)

    1998-08-01

    As observation results on the time-dependent change in the ring-opening reaction of novolac epoxy resin with acetic acid by MALDI-TOFMS, the epoxy ring was opened with reaction time, the hydroxy group formed by the ring-opening reaction was acetylated, those components were measured. In the case of the FABMS/MS observation of materials and the reaction products, the estimation structure could be confirmed from the measured results of MALDI-TOFMS. In the polymerization of bisphenol A epoxy resin with N, N`-dimethylethylenediamine, it was observed by MALDI-TOFMS that many kinds of polymers with high molecular weight were formed with an increase of reaction time. In this case, the LSIMS/MS observation of materials and the reaction products was carried out, the estimation structure could be confirmed from the measured results of MALDI-TOFMS. 19 refs., 8 figs.

  15. Mechanical stimulated reaction of metal/polymer mixed powders; Kinzoku/kobunshi kongo funmatsu no kikaiteki reiki hanno

    Energy Technology Data Exchange (ETDEWEB)

    Tobita, M.; Sakakibara, A.; Takemoto, Y. [Okayama University, Okayama (Japan). Faculty of Engineering; Iwabu, H. [Kurare Co. Ltd., Osaka (Japan)

    1999-12-15

    Mechanical grinding (MG) with mechanically stimulated reaction was performed on metal/polymer mixed powders. The starting materials used in this study were the metals of Mg, Ti and Mg{sub 2}Ni powders, arid polymer of PTFE, PVC and PE powders. The MG process was investigated using XRD, IR, SEM and TEM. According to XRD results, magnesium fluoride (MgF{sub 2}, TiF{sub 2}) and chloride (MgCl{sub 2}) were detected from MG products of the Mg/PTFE, Ti/PTFE and Mg/PVC blending systems, respectively. Explosive reaction was found during MG of both Mg/PTFE and Ti/PTFE. It was also confirmed by XRD results that the production of MgF{sub 2} had already been formed just before the explosive reaction in Mg/PTFE system. It was found from IR analysis that C-C single bond in the polymers, not only both in PTFE and PVC but also in PE, changed to double bond C=C. Hydrogen produced due to decomposition of PE on blending Mg{sub 2}Ni/PE was absorbed into C-Mg{sub 2}Ni-H as amorphous solutes. These mechanically stimulated reaction was powerful method for decomposition of engineering plastics. (author)

  16. Geometrical relaxation of excitations in one-dimensional conjugated polymers; Giichijigen kyoeki kobunshi reiki jotai no shusa kozo kanwa

    Energy Technology Data Exchange (ETDEWEB)

    Yoshizawa, M. [Tohoku University, Sendai (Japan). Faculty of Engineering

    1995-12-15

    Large ultrafast optical nonlinearities in conjugated polymers have attracted much attention because of possible applications to nonlinear optical devices. One-dimensional systems such as conjugated polymers have localized excited states with geometrical relaxation. In this study, photoexcited states in polydiacetylene has been investigated by femtosecond Raman gain spectroscopy with 300-fs resolution. A new photoinduced Raman peak with lifetime of 1.5 ps has been observed at 1200cm{sup -1} for the first time. This peak indicates acetylene-like structure of the main chain relaxes to butatriene-like structure due to the formation of self-trapped exciting with the geometrical relaxation. The formation and decay kinetics of the Raman signals is consistent with the relaxation processes of exciting observed by femtosecond absorption spectroscopy. 8 refs., 5 figs.

  17. Synthesis and chemical recycling of high polymers using C1 compounds; C1 kagobutsu ni yoru kobunshi no chemical recycle

    Energy Technology Data Exchange (ETDEWEB)

    Masuda, T. [National Institute of Materials and Chemical Research, Tsukuba (Japan)

    1997-09-01

    The paper outlined a study of the synthesis of high polymers using C1 compounds which are continuously usable chemical materials and the related compounds such as the derivatives, and also the chemical recycle. In the case of waste plastics mixed in urban refuse, effective is the chemical recycle where C1 compounds obtained by gasifying the mixed waste are used as high polymer material. For the synthesis and recycle of high polymers using C1 compounds, there are three routes: Route A (recycle via high polymer materials), Route B (recycle via C1 compounds and high polymer materials), and Route C including global-scale carbon recycle (recycle via carbon dioxide from biodegradable plastics using microorganism). Among high polymers, those that can be synthesized from C1 compounds, for example, polymethylene, polyacetal and polyketone can be chemically recycled by Route B. 30 refs., 2 figs., 1 tab.

  18. Study on the creation of biopolymer materials under micro-gravity; Bisho juryokuka deno seitai kobunshi zairyo no sosei kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    In order to create new functional organic thin film materials, basic data were examined under micro-gravity. Polymerization of pyrrole was affected by micro-gravity after a few minutes from the beginning of reaction. Although relatively uniform particles were obtained, the particle size was finely dependent on conditions. Electrolytic polymerization of conductive organic thin films was yet unstable in reproducibility. On orientation control and thin film formation of protein under gravity-free environment, electrodeposited films were obtained using bacteriorhodopsin film suspension by applying voltage of 6.4V for 9s after 1s from falling. The reproducibility of the number and area of molecular layers was poor. On the study on the formation process of organic thin films, creation of homogeneous films is probably possible by filtration from suspension under reduced pressure under micro-gravity for a short time. Trial linear polymer tied in a row was obtained by capillary injection of dense polymer solution. The viscous fingering phenomenon of viscoelastic bodies under micro-gravity was compared with that on the ground. 11 refs., 36 figs., 1 tab.

  19. Electrode of solid state polymer electrolyte type electrochemical cell; Kobunshi kotai denkaisitsugata denki kagaku seru yo denkyo

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, M [Yamanashi, (Japan); Inoue, M [Tanaka Kikinzoku Kogyo, Tokyo (Japan)

    1996-04-12

    The solid state polymer electrolyte type electrochemical cell (PEMFC) has such problem that the gas diffusion from the resin surface to the catalyst surface is prevented when the coating thickness of cation exchange resin on the catalyst particle and the number of micropores which conduct the gas flow in the catalyst layer are reduced. Resultingly, a sufficiently large current cannot be taken out of the cell. This invention solves the problem. The catalyst layer of electrode of PEMFC consists of a mixture of the conductive catalyst carrier coated with cation exchange resin and the conductive carrier coated with fluorinated hydrocarbon polymer. Adding the water repellent material to the electrode in this way improves the air-passing porosity. As for the cation exchange resin, perfluorocarbon sulfonate or perfluorocarbon carboxylate can be used. For the fluorinated hydrocarbon polymer, fluorinated polyethylene is preferably used. 4 figs., 2 tabs.

  20. Study on the advanced orientation control technology of biopolymers; Seitai kobunshi zairyo no kodo haiko hairetsu seigyo gijutsu no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Creation of new functional organic materials for the medical application has been investigated under the microgravity. Facilities of the Japan Microgravity Center were used for this study. For the high-speed synthesis of uniform polymer particles under the microgravity condition for ten seconds, appropriately good results were obtained in the oxidation polymerization of pyrroles. For the synthesis of organic conductive thin films by the electrolytic polymerization, the resistance of electrolyte became larger in the microgravity field. It was required to set conditions so as to enhance the effects of microgravity environment. For the orientation control and thin film formation of proteins, the bacteriorhodopsin was examined. It was found that the microgravity improved the quality of electrocoatings. When the surface tension and viscosity of coating liquid were appropriately controlled under the microgravity, thin films were able to be prepared by utilizing a change from 1g to {mu}g. When the high viscosity fluid is placed in the artificial two-dimensional space composing of two parallel plates, and the low viscosity fluid, such as air, is injected into the above, the interface grows in the finger shaped pattern, namely, viscous fingering. The influence of gravity on this phenomenon was also investigated. 11 refs., 45 figs., 5 tabs.

  1. Static characteristics of a pilot relief valve; Baransupisuton gata ririfu ben no sei tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Washio, S.; Yonguang YU; Nakamura, Y. [Okayama Univ. (Japan). School of Engineering

    1997-09-25

    Among a lot of hydraulic valves, relief valve is the most fundamental and important valve which takes change of pressure control. It is essential to know the working characteristics accurately, in order to predict the performance of . system. So far, the numerical simulation of relief valve has been tried and the mathematical models of individual component characteristics based on the knowledge of hydraulics are proposed. In this report, it was revealed that the static relation among the pressure drop, flow rate and opening area for a constriction can be represented, not by the traditional hydraulic orifice equation which has always been used for the purpose but by a new one including an additional pressure loss proportional to the flow rate and the fluid viscosity and inversely proportional to the square of the opening area. The new characteristic equation has proved to consistently forecast the experimental findings in which the rise in oil temperature results in an increase in the piston displacement, but causes little changes as regards regulated pressure. It has also turned out that contrary to conventional preconception, the fluid force exerted on a poppet is negligible. 6 refs., 14 figs., 1 tab.

  2. Evaluation for membrane components of water recycling system. Mizu saisei junkan system yoso no tokusei hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Tanemura, T; Otsubo, K; Oguchi, M [National Aerospace Laboratory, Tokyo (Japan); Ashida, A; Hamano, N; Mitani, K [Hitachi, Ltd., Tokyo (Japan)

    1992-04-01

    The configuration of water recycling systems with membrane filters was studied to purify waste water discharged from human beings, animals and plants which is a key subsystem for closed ecological life support systems (CELSS) essential to long-term manned space activity. The filter performance test apparatus with three kinds of filters such as pre-filter, reverse osmosis membrane filter and ultra membrane filter was fabricated to conduct long-term cycling high-concentration tests using artificial urine as original waste water. As a result, since every membrane filter offered their nominal performance incompletely in high-concentration tests, it was necessary to add an NaCl removing apparatus to the system as primary treated water should be used for vegetation. It was also required to test the membrane performance preliminarily because the performance such as membrane life was different between various waste waters. 7 refs., 32 figs., 9 tabs.

  3. Sorption phenomena of methanol on heat treated coal; Netsushori wo hodokoshita sekitan no methanol kyuchaku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Yasuda, H.; Kaiho, M.; Yamada, O.; Soneda, Y.; Kobayashi, M.; Makino, M. [National Institute for Resources and Environment, Tsukuba (Japan)

    1996-10-28

    Experiments were carried out to learn methanol sorption characteristics of heat-treated coal. When Taiheiyo coal is heat-treated at 125{degree}C, performed with a first methanol adsorption at 25{degree}C, and then desorption at 25{degree}C, a site with strong interaction with methanol and a site with relatively weak interaction are generated in test samples. A small amount of methanol remains in both sites. Then, when the methanol is desorbed at as low temperature as 70{degree}C, the methanol in the site with strong interaction remains as it has existed therein, but the methanol in the site with relatively weak interaction desorbs partially, hence the adsorption amount in a second adsorption at 25{degree}C increases. However, when desorption is performed at as high temperature as 125{degree}C, the methanol in the site with strong interaction also desorbs, resulting in increased adsorption heat in the second adsorption. The adsorption velocity drops, however. Existence of methanol in a site with strong interaction affects the adsorption velocity, but no effect is given by methanol in a site with weak interaction. 3 refs., 4 figs.

  4. Fundamental combustion characteristics of lean hydrogen mixtures; Suiso kihaku kongoki no kisoteki nensho tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Barat, D; Kido, H; Nakahara, M; Hashimoto, J [Kyushu University, Fukuoka (Japan)

    1997-10-01

    One of the excellent combustion characteristics of hydrogen-air mixture is that its emission is free of CO2, but the problem of NOx remains, mainly caused by the high combustion temperature. Using leaner mixture and carrying out EGR are supposed to be effective methods to reduce NOx. In this study, to examine the effectiveness of the two methods, fundamental combustion characteristics of nitrogen added lean hydrogen mixtures were investigated by chemical equilibrium calculations and measurements of turbulent combustion characteristics. It is suggested that nitrogen added mixtures can achieve lower NOx combustion than lean mixtures, taking the combustion efficiency into consideration. 7 refs., 7 figs., 1 tab.

  5. Rotation loss characteristics of superconducting magnetic bearings; Chodendo jikijikuju no kaiten sonshitsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Kameno, H.; Miyagawa, Y.; Takahata, R.; Ueyama, H. [Koyo Seiko Co., Ltd., Osaka (Japan)

    1999-11-25

    In order to clarify the rotation loss and levitation force reduction characteristics of two kinds of radial and axial-type superconducting magnetic bearings (SMB) consisting of a ring-shaped YBCO and a permanent magnet composite, we measured rotation losses and levitation forces of each SMB with a new rotation-loss measuring device using active magnetic bearings. The rotation loss of the SMB increased with increased initial load of the SMB. The levitation force of the SMB decreased remarkably just after activating the initial load to the SMB and during acceleration of the rotor suspended by the SMB. The reduction in levitation force was improved by means of applying a pre-load, that means a temporary load, before the initial load against the SMB. But the rotation loss of the SMB was increased as pre-load was increased. When the YBCO was cooled down from 77 to 66 K, the rotation loss of the SMB decreased as the temperature of the SC decreased. (author)

  6. Solar collecting characteristics of regenerative solar air collector; Chikunetsushiki kuki shunetsuki no shunetsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Aoki, H; Takano, S; Kamitaira, T [Hachinohe Institute of Technology, Aomori (Japan)

    1997-11-25

    In order to develop a solar drying equipment for agricultural and marine products, a regenerative solar air collector was fabricated on a trial basis, which uses round stones as a heat storing material. Its heat collecting characteristics were discussed. The air heat collector was installed on a roof of the Hachinohe Engineering University facing due south. The inside of the air heat collector is lined with heat insulating material with a thickness of 30 mm, and black-painted round stones were laid as an heat insulating material on the floor and the north face. The collector is of a natural air circulating system in which outside air enters from an entrance open to atmosphere, and warmed air exits from upper exit. A selectively absorbing face plaque for accelerating the natural circulation was suspended on the upper part of the north face of the collector. An experiment was performed also on a case in which air is forcibly circulated by fan from the air exit hole. In the natural circulation system, high heat collecting efficiency is shown in the forenoon. However, heat loss increases as temperature in the equipment rises, and heat stored in the round stones during daytime was dissipated completely in the afternoon to night. In the case of the forced circulation system, heat collecting efficiency as high as about 90% was shown in sunny days. This is thought because of heat storage buffering action due to storage of heat in and its dissipation from the round stones, and because of suppression of heat dissipation from the glass surface. 1 ref., 9 figs.

  7. Characteristics of microtremors in Hanshin area; Hanshin chiiki ni okeru bido no kihon tokusei nitsuite

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, H; Suzuki, K; Yamanaka, H; Seo, K [Tokyo Institute of Technology, Tokyo (Japan)

    1996-10-01

    To increase general understandings of fundamental characteristics of microtremors in Hanshin area, microtremors have been observed at Sumiyoshi River-side, Rokko Island, and Nishinomiya. Relations were discussed among the stability of predominant period, successive fluctuation and meteorological conditions. For the analysis, cosine-type taper was conducted before and after 10% of the observed records, and Fourier spectrum was calculated by smoothing using Parzen window with a band width 0.3 Hz. Geometrical mean of two components was used as a horizontal component. At the observation points except Sumiyoshi River-side, predominance in the short period side was not distinct, and was not stable due to the successive fluctuation of predominant period. However, there was less successive fluctuation of spectrum ratio between different two points in the band with period more than 1 sec. Since there was a close correlation between the successive fluctuation in this band and the wind velocity or air pressure, the microtremors in this band was affected by a single vibration source. Ground characteristics could be illustrated by the averages of ratio against base points of moving observation. 14 refs.

  8. Water permeabilities of pulverized fuel ash; Bifuntan sekitanbai no tosui tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Ichikawa, T [Center for Coal Utilization, Japan, Tokyo (Japan); Nagataki, S [Niigata University, Niigata (Japan); Hosoda, N [Kumagai Gumi Co. Ltd., Tokyo (Japan); Utsuki, T [The Coal Mining Research Center, Japan, Tokyo (Japan); Kubo, H [Obayashi Corp., Tokyo (Japan)

    1996-09-01

    It is intended to establish a technology to utilize coal ash in bulk to deal with its increasing production. In order to expand its use into earth engineering materials, two kinds of combustion ashes produced from dust coal burning power plants were used for studies using different kinds of tests. The tests were carried out on strength properties, water permeability, and characteristics of dissolving trace amounts of chemical constituents, with regard to addition effects of cement into compacted and slurry-state dust coal burned ashes. The derived findings may be summarized as follows: as the strength properties, the strength for both of the compacted and slurry-state ashes increases as the cement addition ratio is increased; growth of the strength due to the cement addition ratio and material age varies depending on the kinds of dust coal burned ash; comparison of strengths of the compacted and the slurry-state ashes indicates the strength of the latter ash is about one-third to quarter of that of the former ash; water permeability of the ashes decreases both in the compacted and slurry- state ashes as the cement addition ratio is increased; and the cement addition ratio gives greater impact to the water permeability than the density of the ashes. 28 figs., 5 tabs.

  9. Reservoir characterization using artificial neural network; Neural network wo mochiita choryuso tokusei kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Shimada, N; Kozawa, T [Japan National Oil Corp., Tokyo (Japan); Nishikawa, N; Tani, A [Fuji Research Institute Corp., Tokyo (Japan)

    1997-05-27

    Neural network is used for the prediction of porosity and permeability using logging data as reservoir characteristics, and the validity of this method is verified. For the prediction of reservoir characteristics by the use of seismic survey data, composite seismic survey records obtained by density logging and acoustic logging are used to experiment the prediction of porosity and permeability continuous along lines of wells. A 3-output back propagation network is used for analysis. There is a possibility that this technique when optimized will improve on prediction accuracy. Furthermore, in the case of characteristics mapping, 3-dimensional seismic data is applied to a carbonate rock reservoir for predicting spatial porosity and permeability. This technique facilitates the comprehensive analysis of core data, well data, and seismic survey data, enabling the derivation of a high-precision spatial distribution of reservoir characteristics. Efforts will continue for further improvement on prediction accuracy. 6 refs., 7 figs., 3 tabs.

  10. Improvement of superconducting cylindrical linear induction motor; Chodendo entokeitan ichiji rinia yudo mota no tokusei kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Kikuma, T.; Tomita, M.; Ishiyama, A. [Waseda Univ., Tokyo (Japan)

    1999-11-10

    For the purpose of we examining the effect of characteristics and ac loss under real machine operating environment of the alternating current superconductivity winding for a realization of the superconductive AC machine vessel, cylindrical shortness first linear guiding motor which used NbTi/CuNi superconducting cable for the primary winding was produced experimentally. The coil number was increased from 6 in 14 this time, and the optimization of the primary current was done, and the improvement on characteristics was attempted. Here, starting torque characteristics, quenching detection protection control circuit are reported. (NEDO)

  11. Performance of bismuth tape current leads under vibration; Bi tepu sei denryu rido no shindo tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, E.; Kurihara, M. [Railway Techniical Research Institute, Tokyo (Japan)

    2000-02-25

    The superconducting magnets on Maglev vehicles when running vibrate mechanically due to electromagnetic disturbance from the ground coils. Therefore, the current leads fixed on the superconducting coil, which is vibration at about 98 m/s{sup 2} (=10g), are also required to endure the vibration. We executed dynamic vibration tests for two types of current leads (straight and arc types) which had a multi-stacked configuration of Ag-sheathed Bi2223 tapes impregnated with epoxy resin in a concaved reinforcing gutter. We evaluated the straight-type lead for an operating current of 700 A after every vibration test in liquid nitrogen for one hour under the dynamic strain deformation of 50-100 {mu} on the surface of the reinforcing material covering the current lead. We could not detect degradation of the current lead by vibration through the total cycles of 3.9 x 10{sup 6} after continuous vibration tests. We also executed vibration tests for arc-type current leads which were combined with an actual energized superconducting coil for a Maglev. Large accelerations of these current leads occurred at frequencies of 308 and 375 Hz. In spite of the maximum acceleration of 600-700 m/s{sup 2} generated by actuating the excessive force on a superconducting coil for two seconds, which occurred on these current leads carrying 500 A, the superconductivity of the current leads did not shift to normal conductivity. There was no damage to either type of current lead during these vibration tests. So we confirmed the good prospect for the application of these current leads to actual Maglev superconducting magnets. (author)

  12. Driver characteristics in winding roads in mountains; Sangaku kyokusenbu sokoji no untensha no unten tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Nagai, M; Onda, M; Miyamoto, N [Tokyo University of Agriculture and Technology, Tokyo (Japan); Kojima, Y [National Research Inst. of Police Science, Tokyo (Japan)

    1997-10-01

    Characteristics of speed and directional controls of novice drivers were examined by comparing with those of experienced drivers. The behavior were analyzed on a severe comer for a case study and on a 3km length of the test section for a statistical study. As a result, the novice drivers is unskillful at speed control especially on the down-grade in winding roods, and lateral and longitudinal acceleration is not so smooth as the experienced driver. 9 refs., 11 figs.

  13. Independent mono-pillar cable-stayed bridge with 75[degree] inclination connecting Hachinohe and Port Island. 75[degree] no keisha wo motta dokuritsu ipponchu no shachokyo. ; Hachinohe port island renrakukyo

    Energy Technology Data Exchange (ETDEWEB)

    Ogoshi, K.

    1993-10-01

    The durability enhancement work and the spectacle were described of the independent mono-pillar cable-stayed bridge with 75[degree] inclination connecting Hachinohe and Port Island. For the bridge pier execution, the underwater non-separation concrete was applied, because it had to be done under seawater. The investment frame made of precast concrete was employed for preventing the penetration of salt water into the joint part between the underwater placement concrete and the atmosphere placement concrete as well as for preventing the freezing and thawing action from taking place in the body concrete. The fabrication of investment frame was done in the following ways: The reinforcing steel was coated with epoxy resin in the reinforced concrete; the water-cement ratio was 45 percent; the targeted porosity of concrete was 6 percent; and the water spray with sheet was applied instead of steam aging right after the placement of concrete. The spectacle was made by employing the design of main tower with 75[degree] inclination and the placement of decorative concrete using the foamed polystyrene frame on the bridge pier. Thus the passengers on ships sailing under the bridge can enjoy the beautiful spectacle of the bridge. 4 figs., 1 tab.

  14. Study on the flow of molten polymers in a mold an investigation on mold printability; Kobunshi yoyutai no kanagatanai bisho ryudo. Kanagata tenshasei no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kano, Y.; Nishimura, T.; Ito, S. [Ube Industries Ltd. Yamaguchi (Japan)] Usui, H. [Kobe Univ. (Japan)] Saeki, T. [Yamaguchi Univ. (Japan)

    1998-09-15

    A visualization experiment was carried out using a small metal mold with rectangular grooves as a mold printable model to observe the micro-flow of molten polymer in a metal mold. The glitter, which is an index of printability, was correlated with blow velocity and space area. Since it is highly correlated with space area, it can be thought that filling up well the fine grooves of mold heighten the glitter and printability as well. The effect of such factors as mold temperature, polymer melt temperature, air blow pressure and air blow velocity on the mold printability was investigated. For high density polyethylene and polypropylene, the glitter depended the most on the mold temperature. The higher the temperature, the higher the glitter. It was also found that the increase in blow pressure was effective. For high density polyethylene, the effect of blow velocity and polymer melt temperature was also recognized. 3 refs., 6 figs., 3 tabs.

  15. Fiscal 1994 technological survey report. Research study on polymer materials by precision polymerization; 1994 nendo seimitsu jugo kobunshi zairyo ni kansuru chosa kenkyu hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-03-01

    In the paradigm that propelled polymer chemistry, there are involved the establishment of polymer concept, engineering plastics, regulation of higher ordered structure, and precision polymerization. The first two produced the polymer chemistry era in the 20th century. The regulation of higher ordered structure and the precision polymerization are the fundamental technologies supporting the polymer chemistry of the 21st century. The precision polymerization is a technology for regulating the stereospecificity, sequential structure, and molecular weight of polymers by regulating atoms and molecules and is referred to the following important techniques to be concrete. In the precision addition polymerization, stereospecific regulation and purification of active site to give living polymers are required while, in the precision condensation polymerization, regulation of condensation probability process to be secondary Marcov chain is necessary, as is the establishment of non-defect condensation condition avoiding high temperature deterioration and the like. In the biomimetic precision polymerization, key issues are the method of incorporating molecular recognition control and sequential structure control by living organs into an industrial process. If the higher ordered structure can be regulated by the precision polymerization, it is possible to obtain numerous high performance/high functional materials such as superconductors. (NEDO)

  16. Ecological concepts in recent polymer technology. Part4. Eco-friendly water-absorbing polymer; Kankyo ni chowa shita kyusuisei kobunshi

    Energy Technology Data Exchange (ETDEWEB)

    Kunioka, M.

    1997-07-01

    As an application example of water-absorbing polymers with biodegradability, it was expected to be applied to soil improvement agents used in planting trees in deserts, besides physiological napkins, paper diapers and medical materials. In this paper, water-absorbing polymers with biodegradability such as natural polymers, petroleum-made polymers and polymers synthesized by radiation cross-linking and chemical cross-linking were introduced. Moreover, a kind of water-absorbing polymers developed by the authors, made from polyamino acid synthesized by microbes, was introduced. In the method developed by the authors, the cross-linking structure could be made by combining PGA carboxyl groups and various amino groups of diamine using carbimide with water solubility. As for this method, all of reactions could be conducted in water and catalytic replacement was not necessary, moreover, hydrogel with the water-absorbing rate of 200 to 1500 times could be produced. 44 refs., 3 figs., 1 tab.

  17. Achievement report for fiscal 1990 on research and development of highly crystalline polymeric materials; 1990 nendo kokesshosei kobunshi zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-03-01

    Activities were performed to seek polymeric materials having mechanical strength comparable to metallic materials as a result of giving contrivance on the composition and processing method, and bending strength of 100 GPa or more. The activities were taken in the following five fields: (1) a one-dimensional system material, (2) special melting and forming of a multi-dimensional system, (3) compound forming of multi-dimensional molecules, (4) hybrid cross-linking of cross-linking systems, and (5) high-density cross linking of cross-linking systems. In Item (1), researches were made on optimization of the structures, and elongation and fluid processing of thermotropic liquid crystal polyacrylate, wherein the objective was achieved. In Item (2), the objective was achieved on poly (imide-benzobisthiazole) by monoaxial drawing and lamination thereof. Discussions were given on the liquid crystal polymer as to its correlation between the structure and the magnetic field orientation. In Item (3) discussions were given on the composition and processing method for molecule compounded materials reinforced by aromatic polyamide matrix-polyphenylenebenzothiazole. In Item (4), ionomers were discussed. In Item (5), discussions were given on multi-functional diacetylene system and diacetylene group containing polyimide. (NEDO)

  18. Achievement report for fiscal 1990 on research and development of electrically conductive polymeric materials; 1990 nendo dodensei kobunshi zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-03-01

    It is intended to realize new electrically conductive materials characterized by light weight, corrosion resistance and easy-to-process performance, and electrical and electronic materials having functions different from those of metallic conduction mechanism. Therefore, activities were performed to seek technologies for polymeric materials having conductivity greater than 10{sup 5} S/cm and being stable and easy to process. Activities were taken in the following six fields: (1) new hydrocarbon conjugate polymers, (2) excipient conjugate conductive materials, (3) technologies to form thin films of graphite synthesized at low temperatures, (4) conductive polymers of hetero aromatic system, (5) research and development of conductive materials of the hetero containing system and the {pi} conjugate system, and (6) comprehensive investigative research. In (1), thin films of polyacetylene and polyacene systems were formed, in (2), excipient hydrocarbon conjugate polymers and excipient graphite materials were developed, in (3), a high-accuracy process controlled graphite thin film forming technology was developed, in (4), the conductivity was enhanced by using high-order structural control and molecular design, and stability of the conductive polymers of complex annular conjugate system was enhanced, and in (5), conductive polymers of the hetero containing system and the {pi} conjugate system, and flexible graphite fibers were developed. (NEDO)

  19. Report for fiscal 1998 on results of research and development of silicon-based polymeric material; 1998 nendo keisokei kobunshi zairyo no kenkyu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The research and development of 'silicon-based polymeric materials' has been implemented under ten year plan since 1991 by the research and development system for industrial science and technology, with the following subjects conducted in the general accounting section of fiscal 1998. In the research and development of the synthetic technology of electrically conductive silicon-based polymeric materials, a synthetic method was established for unsaturated side-chain group polysilanes as a basic structural unit for structuring multidimensions. In the research and development of the synthetic technology of new silicon-based polymeric materials capable of plotting circuits, network-shaped polysilanes with various amino groups introduced were synthesized, for which electrical conductivity and temperature dependency were measured. In the research and development of new silicon-based polymeric materials with an electro-luminous function and the like, polymeric synthesis began developing smoothly that has hole-transporting and electron transporting properties concerning the electro-luminous function. In the research and development of silicon-based photoelectric conversion materials, examination was made on the improvement of photoelectric conversion performance by materialization technology including lamination and mixture. The general investigation and research committee contrived further advancement of the research and development. (NEDO)

  20. Achievement report for fiscal 1990 on research and development of high-efficiency molecule separating membrane materials; 1990 nendo kokoritsu kobunshi bunrimaku zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-03-01

    In order to achieve high efficiency and energy conservation in the separation processes in the chemical industry, activities were performed to seek high-efficiency liquid separation films, gas separation films, and the related technologies that make possible separation, condensation, and refinement of substances that have consumed large amount of energy in the conventional separation processes (for example, water-alcohol, and rare gases), and substances difficult of separation and refinement because of resemblance in physical and chemical properties (for example, isomer mixed substances). For the gas separation films, research and development has been made on (1) high-order molecule recognizing films, (2) high-density metal complex fixing thin films, (3) high-functional complex films, and (4) re-activating oxygen condensation films. In (1), attempt was made on oxygen condensation by impregnating the carrier film with aqueous cobalt complex solution with regard to oxygen, for example. Research has been made on alcohol condensation film in the liquid selecting and separating films. Research and development has been made on fluororesin films for water/polar organics separation, (3) high-order structure control of water selective and permeating films, (4) water/acetic acid separating films, and (5) particle separation process utilizing liquid films. (NEDO)

  1. Desulfurization and oxidation behavior of ultra-fine CaO particles prepared from brown coal; Kattan wo mochiite choseishita CaO chobiryushi no datsuryu tokusei to sanka tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Benjamin, G.; Roman, M.; Yamazaki, Y.; Abe, H.; Harano, Y.; Takarada, Y. [Gunma University, Gunma (Japan). Faculty of Engineering

    1996-10-28

    The effect of reaction temperature and oxygen concentration on the desulfurization and oxidation behavior of ion-exchanged brown coal by Ca as new desulfurizing agent was studied. In experiment, Yallourn coal was used for ion- exchange, and limestone produced in Tochigi prefecture was also used for comparative study. Ca-exchanged brown coal was prepared by agitating coal in Ca(OH)2 slurry for 24 hours. The desulfurization behavior of a desulfurizing agent was obtained by measuring H2S and sulfur compounds in outlet gas of a reactor, and the oxidation behavior by measuring SO2 emission in outlet gas after oxidation reaction. As the experimental result, CaO produced from Ca-exchanged brown coal offered the extremely high activity to desulfurization reaction in a temperature range of 850-950{degree}C as compared with limestone. Although the oxidation behavior was dependent on oxidation temperature and oxygen concentration, CaS obtained from Ca-exchanged brown coal was more rapidly converted to CaSO4 than limestone. 3 refs., 8 figs., 2 tabs.

  2. Emission characteristics of premixed lean diesel combustion. Effects of injection nozzle and combustion chamber shape on combustion and emission characteristics; Kihaku yokongo diesel nensho no haishutsubutsu tokusei. Funmu keijo oyobi nenshoshitsu keijo ga haishutsu gas tokusei ni oyobosu eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Harada, A; Sasaki, S; Miyamoto, T; Akagawa, H; Tsujimura, K

    1997-10-01

    Many articles about low NOx emission combustion are reported. A mixture formation is necessary to success low NOx emission combustion. But, there is few reports about the effect of nozzle and combustion shape on emissions which give influence on mixture. In this paper, the effects on characteristic of combustion and emissions of some land of injection nozzle and combustion chamber shape were investigated. As a result, it was cleared that the influence of combustion chamber shape on characteristic of combustion and emissions was varied by spray shape, and pintle type injection nozzle was suitable for PREDIC. 7 refs., 10 figs., 1 tab.

  3. Transient desorption characteristics of fibrous organic adsorbent; Sen'ikei yuki kyuchakuzai no katoteki dacchaku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Inaba, H.; Ozaki, K.; Horibe, A. [Okayama University, Okayama (Japan). Faculty of Engineering; Shimoyama, R. [Okayama University, Okayama (Japan); Kida, T. [Japan Exlan Co. Ltd., Osaka (Japan)

    1999-11-25

    An experimental investigation was performed to determine time transient desorption characteristics of a fibrous type organic adsorbent, which was composed of the bridged complex of sodium polyacrylate as a new kind of adsorbent. The test fibrous adsorbent was packed in a cylindrical vessel, and dry air was passed through it. The experiments were conducted under various conditions of air velocity, temperature, relative humidity and vessel length. As a result, time pressure loss for the packed bed of the test fibrous adsorbent showed a similar tendency to that for the packed bed of spherical particles. The mass transfer data was correlated by the modified Sherwood number, the Reynolds number, the Schmidt number, the ratio of desorbed water vapor mass to fibrous absorbent mass, the nondimensional temperature and the ratio of vessel length to fiber diameter. Fourier number for the nondimensional temperature and the ratio of desorbed water vapor mass to fibrous adsorbent mass, the nondimensional temperature and the ratio of vessel length to fiber diameter. (author)

  4. Geological structure of Osaka basin and characteristic distributions of structural damage caused by earthquake; Osaka bonchi kozo to shingai tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Nakagawa, K; Shiono, K; Inoue, N; Senda, S [Osaka City University, Osaka (JP. Faculty of Science); Ryoki, K [Osaka Polytechnic Collage, Osaka (Japan); Shichi, R [Nagoya University, Nagoya (Japan). Faculty of Science

    1996-05-01

    The paper investigates relations between the damage caused by the Hyogo-ken Nanbu earthquake and the deep underground structures. A characteristic of the earthquake damage distribution is that the damage concentrated near faults. Most of the damages were seen on the side of faults` relatively falling rather than right above the faults and of their slightly slanting to the seaside. Distribution like this seems to be closely related to underground structures. Therefore, a distribution map of the depth of basement granite in Osaka sedimentary basin was drawn, referring to the data on basement rock depth obtained from the distribution map of gravity anomaly and the result of the survey using the air gun reflection method. Moreover, cubic underground structures were determined by 3-D gravity analysis. The result was concluded as follows: when observing the M7 zone of the low land, in particular, where the damage was great from an aspect of gravity anomaly, the basement rock below the zone declined near the cliff toward the sea, which indicates a great possibility of its being a fault. There is a high possibility that the zone suffered mostly from the damage caused by focusing by refraction and total reflection of seismic wave rays. 3 refs., 8 figs.

  5. Studies on characteristics of fluid dynamics in the coal liquefaction reactor; Sekitan ekika hanno tonai no ryudo tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sakawaki, K.; Nogami, Y.; Inokuchi, K. [Mitsui SRC Development Co. Ltd., Tokyo (Japan); Mochizuki, M.; Imada, K. [Nippon Steel Corp., Tokyo (Japan); Tachikawa, N.; Moki, T.; Ishikawa, I. [Japan Atomic Energy Research Institute, Tokyo (Japan)

    1996-10-28

    To design the coal liquefaction reactor of large scale plant in future, it is important to understand characteristics of fluid dynamics within the coal liquefaction reactor. In this study, to measure the fluid dynamics of liquid phase within the coal liquefaction reactor operated under high temperature and high pressure coal liquefaction condition, neutron attenuating tracer (NAT) technique, one of the tracer test methods, was applied using 1 t/d coal treating PSU. The residence time of liquid phase within the reactor can be measured by utilizing property of neutron of being absorbed by materials. The tracer was injected at the inlets of first and third reactors, and the neutron was counted at each outlet. The concentration of tracer was derived from the discrete value, to determine the residence time distribution of liquid phase. The mean residence time of liquid phase in the single first reactor and in the total three reactors were prolonged under the severe operation conditions of liquefaction. The more severe the liquefaction operation condition was, the more active the mixing of liquid phase was in the first reactor. It was found that the progress of reaction was accelerated. 2 refs., 5 figs., 1 tab.

  6. Coal Liquefaction characteristics and chemical structure of product oil; Sekitan ekika hanno tokusei to seiseibutsu no kagaku kozo

    Energy Technology Data Exchange (ETDEWEB)

    Endo, H.; Sato, M.; Chiba, T.; Hattori, H. [Hokkaido University, Sapporo (Japan). Center for Advanced Research of Energy Technology; Sasaki, M. [Hokkaido National Industrial Research Institute, Sapporo (Japan)

    1996-10-28

    Through the hydrogenolysis of Wandoan coal and Tanito Harum coal which are used for the NEDOL process, differences of liquefaction characteristics between them were found. The purpose of this study is to grasp these differences as differences of chemical structures of oil fractions. The compound type analysis was conducted for oil fractions obtained at varied reaction temperature for varied reaction time. Coal liquefaction characteristics of these coals were discussed by relating oil yields and chemical structures. For Tanito Harum coal, yields of gas and oil were considered to be lower than those for Wandoan coal, which reflected that the contents of partially hydrogenated hydroaromatics in oil fraction from the former were lower than those from the latter, and that the remarkable change of composition did not occur with the progress of the reaction. For both the coals, the remarkable changes in the average molecular weight of oil fraction were not observed with the progress of the reaction. While, the content of methane gradually increased with the progress of the reaction, which suggested that oil was gradually dealkylated. 5 figs.

  7. Performance of mesh seam welds in tailor welded blanks; Terado blank yo mash seam yosetsubu no tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Uchihara, M; Takahashi, M; Kurita, M; Hirose, Y; Fukui, K [Sumitomo Metal Industries, Ltd., Osaka (Japan)

    1997-10-01

    Formability, fatigue properties and corrosion behavior of mash seam welded steel sheets were investigated and the results were compared with laser weld. The stretch formability of mash seam weld and laser weld were same level. Mash seam weld however, showed slightly smaller formability in hole expansion test. The fatigue strength of mash seam welds was lower than that of laser welds in case of differential thickness joints. Corrosion was apt to initiate at weld in both mash seam and laser weld with E-coat. The corrosion resistance of welds was improved by using zinc coated steel. 3 refs., 14 figs., 2 tabs.

  8. Emission and combustion characteristics of multiple stage diesel combustion; Nidan nensho ni yoru diesel kikan no nensho to haishutsubutsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Hashizume, T; Miyamoto, T; Tsujimura, K [New A.C.E. Institute Co. Ltd., Tokyo (Japan); Kobayashi, S; Shimizu, K [Japan Automobile Research Institute, Tsukuba (Japan)

    1997-10-01

    A new concept of multiple stage diesel combustion was studied by means of engine test, combustion observation and numerical simulation, in order to reduce NOx emissions at high load conditions. With this concept, the premixed combustion occurs under the fuel lean conditions and the diffusion combustion occurs under the high temperature conditions. As seen in the result of combustion observation, a first stage combustion occurs with no luminous flame. A second stage combustion occurs with a luminous flame after very short ignition delay period. However the luminous flame is disappeared immediately. Because cylinder temperature is high, and hence soot oxidizes immediately. 5 refs., 11 figs., 1 tab.

  9. Impedance frequency characteristics of the MAGLEV power feeding circuit; Jiki fujoshiki tetsudo ni okeru kidenkei no inpidansu shuhasu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Ema, S [Numazu College of Technology, Shizuoka (Japan); Ajiki, K [Railway Technical Research Inst., Tokyo (Japan)

    1993-09-20

    In connection with the impedance frequency characteristics of the coils for propulsion and the power feeding circuit of the magnetically levitated train (MAGLEV), the inverted L circuit and T circuit as equivalent circuits for the coil for propulsion and for the power feeding, respectively, are proposed and analyzed. The simulated result and the result of measurement reported by now are in good agreement, the measured values and calculated values being almost equal in both the characteristics of the coils for propulsion and those of the power feeding circuit. The validity of the two equivalent circuits are clarified, and the frequency characteristics are verified theoretically. The impedance frequency characteristics of the coils for propulsion which are peculiar to MAGLEV are investigated with the power feeding circuit consisting of the power feeding line and propulsion coils. Lastly, simulation is carried out for the coils for propulsion with several hundred propulsion coils and for the power feeding system assuming the commercial line. As a result, it is found that the antiresonant frequencies are decreased to about one tenth in both of the characteristics. 11 refs., 18 figs.

  10. Study on aero-dynamic characteristics of the sloop rig (continued); Sloop ring no kuriki tokusei no ichikaiseki (zoku)

    Energy Technology Data Exchange (ETDEWEB)

    Shinkai, A.; Iyoda, H. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1997-09-04

    A numerical simulation method was formerly provided for analyzing aero-dynamic characteristics of sloop rig by the vortex distribution method. For this method, aero-dynamic characteristics of the sloop rib were formulated by treating air flow around sail as a two-dimensional problem and by assuming sail as a membrane. The sloop rig is a yacht for more than two persons, which is the most popular form of rig. A main sail and a jib sheet are fixed on a mast. In this study, the method developed based on the panel method was introduced for analyzing the effects of jib sheet which can control the jib trim angle. Generality of the present aero-dynamic characteristics was enhanced, and problems of the analysis method were extracted through the numerical simulation of a yacht with sloop rig. Influence of the position of fairleader on the aero-dynamic characteristics was qualitatively grasped by considering the effects of jib sheet and by trimming the elevation into ideal one. 6 refs., 11 figs.

  11. Fundamental characteristics on electric system of solar electric vehicle; Solar car no denki keito ni kansuru kiso tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Fujita, S; Sasaki, M; Kaga, T; Koyama, N [Hachinohe Institute of Technology, Aomori (Japan)

    1996-10-27

    The electric system of a solar vehicle was removed and the fundamental characteristics examined in order to carry out a basic experiment on the electric system. Using a basic circuit with panels, batteries and loads connected, the voltage and current were measured in the presence/absence of the trackers, batteries, etc., and then, their effects were examined. Simultaneously, the quantity of solar radiation was also measured. The lowering of the output voltage was somewhat relaxed with the use of the trackers. Further, with the trackers used, the output voltage of the panel was small in spite of a large quantity of solar radiation compared to the case without the trackers, which was due to the restriction of the output voltage by the trackers. When measured without batteries, the output voltage of the panel was such that the load current was also influenced by the variation of insolation, so that, with a large decrease in insolation, the load current was decreased with the supply of current suspended from the panel. 7 figs., 1 tab.

  12. Accuracy of parameters of permeable fractures by hydrophone VSP; Hydrophone VSP ni yoru tosuisei kiretsu no tokusei hyoka no seido

    Energy Technology Data Exchange (ETDEWEB)

    Kiguchi, T; Ito, H; Kuwahara, Y; Miyazaki, T [Geological Survey of Japan, Tsukuba (Japan); Yabuuchi, S; Hasegawa, K [Power Reactor and Nuclear Fuel Development Corp., Tokyo (Japan)

    1997-10-22

    Hydrophone VSP (vertical seismic profiling) experiment is under way as a technique for detecting subsurface water-permeable cracks by use of boreholes and for evaluating their characteristics (permeability index, crack direction, dip angle). In this report, tube waves observed by hydrophone VSP are subjected to analysis for the determination of water-permeable crack characteristics, the impact caused by errors in the value inputted for analysis is estimated, and a model calculation is performed in case there is no agreement between data from the borehole and data from VSP, all for examining the VSP records for accuracy. When an error rate of 15% is given to the tube wave/P-wave amplitude ratio, a change of 40% or lower results in the permeability index, and a change of 10deg or less in the dip angle, which means that an error in the amplitude ratio does not affect the analysis very much. Changes in the amplitude ratio resulting from changes in crack direction and dip angle differ, dependent on the offset rate. When angular differences among plural crack directions are within 90deg and dip angles within 60deg, the result of analysis represents the average characteristics of the plural cracks. 7 refs., 5 figs., 2 tabs.

  13. Prediction of blast vibration level considered propagation characteristics; Denpa tokusei to koryoshita happa shindo level no yosoku

    Energy Technology Data Exchange (ETDEWEB)

    Kunimatsu, S; Jinguji, M [National Institute for Resources and Environment, Tsukuba (Japan); Yamada, M; Hirai, T [Newjec Inc., Osaka (Japan); Durucan, S; Farsangi, M

    1997-10-22

    With an objective to assess environmental influence induced by blast vibration, a study has been carried out on a method to predict vibration levels. The study has discussed a method to calculate vibration levels, in which vibration propagating characteristics are sought on blast vibration generated from an open-cut limestone mine from acceleration waveforms in the vicinity of the blast source and residential housings by using an octave analysis, and waveforms are predicted. The shortest straight line distance from the blast position to a housing is about 150 m, and the height difference is about 30 to 40 meters. The measuring instruments include a vibration level meter used for pollution measurement and a data recorder, with signals lower than 1 Hz and higher than 90 Hz being interrupted. The environmental influence assessment discusses not only the maximum value of the vibration level, but also sizes of values of each band by using a frequency analysis. The result of the discussions revealed that the prediction of the vibration levels is little affected by phase characteristics, and that no problems are caused in the measurement accuracy even if the vibration levels are predicted by using relative decay amount according to a one-third octave analysis for the propagation characteristics. 5 figs., 4 tabs.

  14. Hydrogenolysis reactions characteristics of deashed coal under low temperature; Teionka ni okeru dakkai shoritan no suisoka bunkai hanno tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Owada, T.; Mashimo, K.; Wainai, T. [Nihon University, Tokyo (Japan). College of Science and Technology

    1996-10-28

    In relation to coal liquefaction, the effect of inorganic minerals on liquefaction reactivity and the effect of hydrofluoric acid (HF) treatment on organic molecular structure of coals were studied by demineralization of low-rank coals in HCl or HF solution. In experiment, Taiheiyo coal specimen was deashed in HCl solution at 25-70{degree}C for 6 hours while agitating, and in addition, deashed in HF solution. Hydrogenolysis of the deashed coal specimen was conducted using tetralin or methylnaphthalene as solvent under initial hydrogen pressure of 1.96MPa at reaction temperature of 693K for 60min. The experimental results are as follows. The ash content of Taiheiyo coal hardly offers catalysis in hydrogenolysis reaction. Carboxyl group increases in demineralization of coal because of breakage of bridged bonds. Organic structure of coal changes by demineralization in dense HF solution. Change in organic structure of coal by demineralization in dense HF solution is dependent on treatment temperature. 2 refs., 4 figs., 1 tab.

  15. Predict optimize the friction characteristics of brake pads; Brake pad no masatsu tokusei no yosoku to saitekika

    Energy Technology Data Exchange (ETDEWEB)

    Saotome, H [Nissin Kogyo Co., Tokyo (Japan); Kato, T [The University of Tokyo, Tokyo (Japan)

    1997-10-01

    The effect of the friction and the wear properties of brake pads were experimentally studied using a test rig of scale of 1/10 of the system used in a commercial car. The experimental data were investigated by the Multiple Regression Analysis and the Neural Network, and the effects of volume % of components on the friction and the wear properties were predicted. In addition the components of brake pads are optimized by Genetic Algorithms. 8 refs., 9 figs., 4 tabs.

  16. Photometric analysis on concentration characteristics of Fresnel lenses; Fotometoriho wo mochiita Fresnel lens no shuko tokusei kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, A [Tokyo University of Agriculture and Technology, Tokyo (Japan)

    1997-11-25

    Light concentration characteristics of Fresnel lenses were analyzed by using photometry. Light concentrating systems include a reflective system represented by a rotary parabolic mirror, and a refractive system represented by the Fresnel lens. The refractive system has a focused section broadened as much as the dispersion effect in association with refraction, and cannot derive a focus with high magnification as compared with the reflective system which can achieve it. The refractive system causes reduction in collected light intensity to about half on a parax, hence a large amount of loss. However, the system can be made available inexpensively due to mass production by using mold formation. Although it is difficult to utilize all of the light, 95% of the received radiation is concentrated in an opening area with a radius of about 4G (G is a radius of an image of solar light at a focus plane which passes through the center of a Fresnel lens). The average magnification of light concentration at this time in the opening area reaches 390 times. When a 3-D compound parabolic concentrator (CPC) with a radius of 4G is placed on a lens focus as a secondary light concentrator, the final magnification of light concentration shows a value of about 2700 times, whereas restoration of 39% is possible, as compared with a rotary parabolic mirror. The system has sufficient possibility to be used for high-temperature light concentration. 3 refs., 5 figs., 1 tab.

  17. Output characteristics of torsion arc blade type horizontal axis windmill; Nejire enko yokugata suiheijiku fusha no shutsuryoku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Kojima, N; Kishimura, K [Meiji University, Tokyo (Japan)

    1997-11-25

    The previous paper theoretically analyzes characteristics of a torsion arc blade type (TABT) horizontal axis windmill to derive the theoretical equations, which give the results in good agreement with the observed ones, when multiplied by a blade shape factor. This paper discusses that the theoretical and observed results are in good agreement with each other by taking into consideration shape-related solidity and number of blades. The following findings are obtained, when parameters related to a 6-blade TABT horizontal axis wind mill are introduced and hysteresis brake is used as the load resistance for torque measurement. Shape factor can be represented by two factors of blade number and solidity. The same equation for shape factor is applicable to both elliptical and rectangular blades. These blades need different theoretical equations to give the results in agreement with the observed ones, when operated at a tip speed ratio (TSR) of 1.77 and 1.58, respectively. Rotational force is affected by the rear blade shape when they are operated at a respective TSR below the above level, but unaffected at beyond the above level. 5 refs., 9 figs., 1 tab.

  18. Fundamental characteristics of new electric power storage equipment celled `ECS`; Atarashii denryoku chozo sochi `ECS` no kisoteki tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Okamura, T.; Yamagishi, M.

    1997-01-30

    This paper introduces new electric power storage equipment called an energy capacitor system. A special electrically double-layered capacitor with its energy density raised in sacrifice of internal resistance has the current so adjusted that loss will not increase by using a switching converter (consisting of a charger and a current pump). The capacitor is charged and discharged at high efficiency. Upper limits of the charge voltage for each capacitor are connected with parallel monitor circuits so that maximum charge voltage of each capacitor will be aligned at one level, wherein charge and discharge are performed with that voltage used as the starting point. A drawback in a capacitor is lower energy density than in a secondary battery. Therefore, high voltage withstanding organic electrolyte was used, and electrode activated carbon was given discussions starting from its raw material structures. The efforts resulted in obtaining as high energy density as 43 Wh/kg (about 20 times as much as in conventional materials, and comparable to lead-acid batteries). In order to minimize heat generation due to the increased internal resistance, a switching converter was used to suppress charge/discharge currents to the minimum required levels. Although the capacitor still has insufficient voltage withstanding power and short life, the energy density is increasing beyond the initial estimation. The next problem to be solved is reduction in production cost for its industrialization. 4 refs., 4 figs., 2 tabs.

  19. Improvement of superconducting cylindrical linear induction motor; Chodendo entogata tan'ichiji rinia yudo mota no tokusei kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Kikuma, T.; Ishiyama, A. [Waseda Univ., Tokyo (Japan)

    2000-05-29

    For the purpose of examining the characteristics (effect of stability and ac loss by the higher harmonic wave etc.) of an alternating current superconductivity winding under a real machine operating environment of the super-conductive AC machine vessel, authors produced a cylindrical shortness first linear guiding motor (SCLIM) which used the NbTi/CuNi super-conducting cable for the first excitation winding experimentally. In this study, the evaluation of the start up thrust and operation confirmation of the quenching detection protection circuit were carried out using the produced SCLIM. In the quenching detection protection control circuit, the first excitation winding was divided into an internal layer and an outer layer, and both layers were excited in the 2 layer division and a quenching detection protection circuit was installed on the 2 layers respectively. The circuit of a part of fact by this of the phase in which the quench was generated and observed was cut off, and the operation would be able to be continued in part of the remainder of the phase and other two phases. Here, it is to cut off the quenched phase from the circuit, when the phase current becomes zero, and the other effect on the phase is held as small as possible. (NEDO)

  20. Mechanical properties of weft knitted fabric reinforced composites. Iamimono kyoka fukugo zairyo no rikigakuteki tokusei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Wu, W.; Inoda, M.; Kotaki, M.; Goto, A.; Fujita, A.; Hamada, H.; Maekawa, Z. (Kyoto Institute of Technology, Kyoto (Japan). Faculty of Textile Science)

    1993-09-15

    Mechanical properties and failure behavior of weft knitted fabric reinforced composites were studied. Aramid fiber was used as reinforcement (knitting fiber), and epoxy resin as matrix. Different tensions were applied to the weft knitted fabric in a course or wale direction to prepare 5 kinds of fiber reinforced composites with different densities of the knitted fabric, and tensile test pieces were thus provided by cutting each composite in a course or wale direction. As a result, the weft knitted fabric reinforced composite offered a dynamical anisotropy, and the tensile strength of the test pieces was higher in wale direction than course one. Fracture in a course direction occurred at the section with extreme low fiber content, while fracture in a wale direction occurred at a loop interlocking region due to stress concentration. The tensile strength was constant or increased in a course or wale direction by stretching the knitted fabric before molding, respectively. 21 refs., 15 figs., 2 tabs.

  1. Study on thermochemical liquefaction of biomass feedstocks; Biomass genryo no yuka hanno tokusei ni kansuru kisoteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-02-10

    Liquefaction is applied to various biomass wastes and unused biomass to study characteristics of the liquefaction in each case. The paper described the system of the conversion and use of biomass into energy, conducted the positioning of the liquefaction, and outlined a history of the liquefaction chemistry and the study. To obtain basic data of characteristics of the liquefaction of various biomass raw materials, the liquefaction was conducted changing operational factors for the purpose of clarifying the product distribution of oil and by-products and oil properties. A comprehensive consideration was made of the liquefaction based on basic data and literature reports on the liquefaction of various biomass. From the above-mentioned studies, it was concluded that the energy can be recovered in a form of oil by applying the liquefaction to various biomass materials. A series of the study clarified effects of various operational factors on characteristics of the liquefaction as well as effects of classification of biomass materials and composition of the materials on characteristics of the liquefaction. 141 refs., 78 figs., 56 tabs.

  2. Ring shear characteristics of clays in fractured-zone-landslide. Hasaitai chisuberichi no nenseido no ring sendan tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Yatabe, R; Yagi, N; Enoki, M [Ehime Univ., Ehime (Japan). Faculty of Engineering

    1991-09-20

    The importance of study on the residual strength, in addition to the peak strength, has been pointed out for the study of landslides. The residual strength characteristics, effects of shearing rate, and grain size of clays, as well as the residual strength characteristics of clay minerals of a fractured zone landslide were examined by ring shear tests. The residual friction angles {phi}{sub r} of the tested clays of the fractured zone landslide were from 10 to 31{degree}, and were smaller than those of shearing resistance angles {phi}{prime} obtained by triaxial tests by 5 to 15{degree}. Contrary to the pointing out made hitherto, no correlation between clay content CF and plastic index was recognized for {phi}{sub r} of clays of a fractured zone landslide. As regards CF, the relation with CF was far below the lowest limit indicated by now. Ring shear characteristics of principal structural clay minerals, vermiculite, mica, illite, chlorite, and kaolinite were investigated. {phi}{sub r} of these clay minerals were in the range from 10 to 25{degree}. 20 refs., 14 figs., 2 tabs.

  3. Supercavitation hydrofoil performance and torsional flutter margin; Supercavitation yokugata no teijo hiteijo tokusei to nejiri flutter genkai

    Energy Technology Data Exchange (ETDEWEB)

    Matsudaira, Y.; Obara, H. [Tokyo Metropolitan Institute of Technology, Tokyo (Japan); Nakagawa, H. [Sumitomo Heavy Industries, Ltd., Tokyo (Japan); Yoshida, H. [Tokyo Metropolitan Institute of Technology, Tokyo (Japan)

    2000-08-25

    Supercavitation hydrofoil applied to high-speed marine propeller or hydro-machinery blade runs into unsteady behaviors such as cavitation breakdown and hydraulic flutter in some operation range. The hydrofoil performance was experimentally estimated and compared with the wedge performance using the cavitation tunnel and the torsional vibration apparatus with three component load cells, This experiment was carried out at several angles of attack in the region from subcavitation to supercavitation. At a general steady state but including some cavitation breakdowns, the hydrofoil has the most superior time mean lift/drag ratio about 6 < C{sub l}/C{sub d} < 8 at in all cavitation regions. But, the ratio drastically decreases as the angle of attack increases. Fluctuating lift coefficient C{sub l}{sup '} due to the cavitation breakdown reaches up to about 10% of time mean lift coefficient C{sub l}. At the hydrofoil pitching motion, the torsional flutter margin of the hydrofoil extends to higher reduced frequency side as the angle of attack increases and has the nearly same margin of the wedge in all cavitation regions. (author)

  4. Unsteady performance of a cavitating hydrofoil in stall conditions. Shissoku jotai ni okeru yokukei no hiteijo tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Ogata, H. (Tohoku University, Sendai (Japan)); Ito, Y. (Hachinoe Institutea of Technology, Aomori (Japan)); Oba, R. (Tohoku University, Sendai (Japan). Institute of Fluid Science); Sunayama, Y.; Abe, J. (Suzuki Co. Ltd., Shizuoka (Japan))

    1991-11-25

    To elucidate the unsteady performance of cavitating hydrofoils in a stall condition, this paper describes a survey on unsteady conditions without cavitations and stall conditions as to their characteristics from a cavitation to a supercavitation, lift and drag. Flows with cavitations were also analyzed. As a result of comparing also data for the subcavitation regions, it was found that a large-scale vortex generation on the hydrofoil back-pressure plane in near stall condition has a close relation with the changes in lifts and drags or the cavitation breakdown. The experiment used a testing water tank of circulation flow type having a rectangular measuring cross section (70 mm in width and 190 mm in height), and the hydrofoil specimens of two-dimensional symmetric type with a chord length of 70 mm and an aspect ratio of 1.0. The test condition used a cavitation coefficient of 0.18-6.33 (from a supercavitation to non-cavitation). A numerical analysis proved that the power spectra around the hydrofoils having no cavitations agreed with the experimental results, and verified the reasonability of the application. 18 refs., 8 figs., 2 tabs.

  5. Basic characteristics of new shape formed coke in burden distribution; Shingata seikei cokes no sonyu bunpu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Ichida, M; Yamamoto, T; Komaki, I; Oda, H; Matsunaga, S; Matsuzaki, S; Deno, T; Konno, N [Nippon Steel Corp., Tokyo (Japan)

    1996-12-01

    Basic characteristics in burden distribution and charging pattern of new shape formed coke developed in order to improve the properties of small size and low void fraction that pillow-type formed coke h s were conducted by 1/3 scale charging model and mathematical model of blast furnace. Basic characteristics, those are, inclination angle, coke-collapse and trajectory of new shape formed coke are almost the same as those of conventional coke. In the case of wall charging of new shape formed coke, until 60% of total charged coke, new shape formed coke is able to be charged without it`s rolling to the center. It is possible to apply RABIT model to new shape formed coke charging without it`s major modification. In the case of new shape formed coke wall charging, the fluctuation in furnace is supposed to be smaller than that in the case of pillow-type formed coke wall charging. Moreover, it`s center charging is supposed to be applied to actual blast furnace. More accurate estimation of in-furnace phenomena by mathematical model considering coke reactivity, is a subject to be worked out in future. 11 refs., 9 figs., 5 tabs.

  6. Study on the structural characteristics of extradosed concrete bridges; Ekusutoradozudo kyo no kozo tokusei ni kansuru ichikosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Oka, Y. [Japan Highway Public Corp., Tokyo (Japan); Kasuga, A. [Sumitomo Construction Co. Ltd., Tokyo (Japan); Yamazaki, J. [Nihon Univ., Tokyo (Japan). Coll. of Science and Engineering

    1997-03-31

    Parameters are analyzed to provide data for deciding, in the planning and designing stages, whether a cable stayed bridge or an extradosed bridge should be adopted. Comparative investigation of the vibration properties of both types of bridges is also referred to. The result of the study on the structural properties of the cable stayed road bridge and the extradosed road bridge is introduced. Based on the concept of the extradosed bridge, designers are now able to select without restraint the after load sharing rate of the diagonal members. Parameter analysis of a diagonal member reinforced 3-span continuous beam is performed. By introducing indices showing the load sharing rate of the diagonal member, the cable stayed bridge can be distinguished logically from the extradosed bridge in designing. It is found important that the height of the main tower is set to approximately 10% the length of the center span for the construction of the extradosed bridge. The vibration properties of the cable stayed bridge and the extradosed bridge of the same scale are compared. 7 refs., 18 figs., 6 tabs.

  7. FY 1996 R/D project of industrial and scientific technologies contracted with NEDO. Report on R/D of organosilicon polymers; 1996 nendo sangyo kagaku gijutsu kenkyu kaihatsu jigyo Shin energy Sangyo Gijutsu Sogo Kaihatsu Kiko itaku. Keisokei kobunshi zairyo no kenkyu kaihatsu (Keisokei kobunshi zairyo no kenkyu kaihatsu) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-01

    Organosilicon polymers are highly innovative materials having high performance and novel functions, and they can be widely applied. The purpose of this study is to establish fundamental techniques for molecular design, synthesis, material processing and evaluation of organosilicon polymers having excellent electro- and photo-functions, and advanced heat-proof, fire-proof and mechanical properties. This R/D includes (1) R/D of electrical conducting materials by organosilicon polymers, (2) R/D of novel organosilicon polymers applicable to direct lithography, (3) R/D of new silicon-based polymer materials with electro-luminous function, and (4) R/D of silicon-based polymers for new photoconductive materials. In (1), synthesis of highly conjugated polymers is investigated. In (2), novel organosilicon polymeric materials have been developed, which would be applicable to direct lithography of electronic circuits, and which could contribute to simplification of the circuit formation process. In (3), the research aims at development of new silicon-based polymer materials with luminescent function which can be applied to the large size electro-luminescent display devices. In (4), new materials with visible light absorption have been synthesized through the molecular design and synthesis. The photo-carrier generation was observed. 107 refs., 86 figs., 23 tabs.

  8. FY 1997 R/D project of industrial and scientific technologies contracted with NEDO. Report on R/D of organosilicon polymers; 1997 nendo sangyo kagaku gijutsu kenkyu kaihatsu jigyo Shin energy Sangyo Gijutsu Sogo Kaihatsu Kiko itaku. Keisokei kobunshi zairyo no kenkyu kaihatsu (keisokei kobunshi zairyo no kenkyu kaihatsu) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    The purpose of this study is to establish fundamental techniques for molecular design, synthesis, material processing and evaluation of organosilicon polymers having excellent electro- and photo-functions, and advanced heat-proof, fire-proof and mechanical properties. This R/D includes (1) R/D of electrical conducting materials by organosilicon polymers, (2) R/D of novel organosilicon polymers applicable to direct lithography, (3) R/D of new silicon-based polymer materials with electro-luminous function, and (4) R/D of silicon-based polymers for new photoconductive materials. In (1), synthesis method of regular polymers with a 3-D structure was developed. Non-volatile dopants were developed, and structures of polymer-dopant composites could be controlled. In (2), precise control of conductivity was examined. Material processing and evaluation techniques were also examined through stabilization of polysilane thin films, optimization of pattern forming conditions, and precision of patterns. In (3), new silicon-based polymers have been synthesized. In (4), two kinds of polymers have been synthesized for development of materials with high photo-carrier generation efficiency and high mobility. 72 refs., 71 figs., 22 tabs.

  9. Report on the results of the fiscal 1997 international research cooperation project. `Joint R and D industrial base technology` (development of functionally graded materials); 1997 nendo kokusai kyoryoku jigyo. `Sangyo kiban gijutsu kyodo kenkyu kaihatsu` keisha kinosei zairyo no kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    For the purpose of developing functionally graded materials (FGM/LB) of thermal stress relaxation heat resistant large bulk state which are adoptable to high efficiency engine members, conducted in fiscal 1997 as intermediate target were the experiment for enlargement of the sintering process of FGM/LB with bore of up to 100mm, evaluation of physical properties, the basic development of the fabricating system facility for the commercialization. In the development of heat resistance use FGM/LB fabrication technology, to obtain ZrO2(3Y) stainless steel system FGM/LB, the following were fabricated in each bore size of 50-100mm by the research use large discharge plasma sintering machine: sintered bodies of ceramics/metal single substrate materials and mixed layer single substance materials, and FGM/LB sintered bodies without separation and crack which are composed of 9 intermediate graded layers. The survey was also made on the optimal composition and optimal sintering conditions toward the enlargement without unevenness. In the evaluation of physical properties, ZrO2(3Y)/stainless steel system was selected and test pieces were fabricated to obtain basic data on texture observation, distribution of hardness, fracture toughness, high temperature abrasion resistance, thermal expansion rates, etc. 27 refs., 108 figs., 43 tabs.

  10. Utilization as solid fuel and its physicochemical characteristic of hydroponic cultured plants for wastewater treatment; Suiko saibai shokubutsutai no kotai nenryoka to butsurigakuteki tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Inoue, M; Hirano, K [Kanagawa Environmental Research Center, Kanagawa (Japan); Inamori, Y [National Inst. for Environmental Studies, Tsukuba (Japan)

    1996-10-10

    A treatment of the wasted flower plants used for the waste water treatment process by the indoor drying and pressing method was studied for their effective reuse as columnar solid fuel. Three kinds of wasted flower plants were processed for making samples by indoor drying method for about two months. The samples which were chop plants about 10cm long, half powdery ones and powdery ones were made into the columnar solid fuels under 1-5 t{center_dot}cm{sup -2} pressure. According to the drop`s strength test for the solid fuels, it was investigated that they lost their physical strength rapidly in proportion to the elapsed time. The solid fuel made of powdery processed plants particularly lost its strength most rapidly. In the case of solid fuels made of chops, when they were pressed by the method that the trunk and the branches filled into the press`s vessel in the same direction against the press`s one, their physical strength were maintained for a long time. Furthermore, the form of solid fuels processed by this method looked like keeping their original one for a relatively long term. It was found that their combustible efficiency was excellent because the combustible calorie of the wasted plants ranged from 3,600 cal{center_dot}g{sup -1} to 3,800 cal{center_dot}g{sup -1}. 18 refs., 11 figs., 2 tabs.

  11. Continuous measurement of electrical characteristics in plants. 3. Shokubutsu seitai no denki tokusei sokuteiho. 3. ; Suikoeki pH chosei heno tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Sekiyama, T; Haniyu, H; Saiki, H

    1989-09-01

    Controlling pH of nutrient solution and keeping the other conditions unchanged, measurements of variation in electric potential difference between leaf and hypocotyl of a bush bean plant was performed for about seven days. Silver electrodes 0.3mm in diameter were glued on the surface of the plant using conductive paste prepared by dissolving gelatine in Ringel {prime} s solution. The results obtained are summarized as follws: first, when pH of the solution is suddenly increased or decreased, the potential of leave becomes high or low with respect to that of hypocotyl respectively; second, the variation in potential difference between them is affected by the rate at which pH of the solution is adjusted, although the total variation of pH is controlled to be the same, and in particular by mild adjustment (0.02 - 0.05pH/min) it is reduced to 1/2 - 1/4 of that produced by sudden change; third, abrupt change in pH of the solution cause to the plant the temporary suppression of its water absorption having a duration of 7 - 15 minutes. A short account is given of a non-contact type measurement of bioelectric potential performanced by making use of a Faraday {prime} s cage. 11 refs., 12 figs.

  12. Analysis of output characteristics of PV modules under natural sunlight; Shizen taiyokoka ni okeru taiyo denchi module shutsuryoku tokusei no kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Murai, Y.; Igari, S. [Japan Quality Assurance of Organization, Tokyo (Japan)

    1997-11-25

    The paper measured current/voltage characteristics of various PV modules under natural light and analyzed various characteristics such as generated output and module power generation efficiency. In the experiment, installing various PV modules at the solar techno center located at north latitude 34.7deg and east longitude 137.6deg, measurement was made by I-V curve tracer, pyranometer, and thermocouple buried on the module back. As a result, the following were confirmed: As to the monthly mean power generation efficiency, the crystalline system is lowest in summer and highest in winter, and the amorphous system highest in summer and lowest in winter. Concerning the power generation efficiency and illuminance, the gap of power generation efficiency between at high illuminance and at low illuminance is large in the crystalline system and small in amorphous system. Relating to the azimuth angle of module installation and the generated output, the installation inclined 15deg angle west in summer and 15deg angle east in fall/winter generates more power in the crystalline system. On the contrary, the installation on the south face generates more power in the amorphous system. 4 refs., 8 figs., 3 tabs.

  13. Corrosion characteristics of thermal sprayed coating of stainless alloys in chloride solution; Taishoku gokin yosha himaku no enkabutsu yoekichu ni okeru fushoku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, T. [Ajinomoto Co. Inc., Tokyo (Japan); Ishikawa, K. [Tokyo Metallikon Co. Ltd., Tokyo (Japan); Kitamura, Y. [Kitamura Technical Consultant Office, Kanagawa (Japan)

    1994-12-15

    With an objective to develop a thermal sprayed coating of environment interruption type that can be sprayed at sites, electrochemical discussions, SEM observation, and EPMA surface analysis were performed on corrosion characteristics in chloride solution of coatings of SUS 304, 316 and Hastelloy C thermally sprayed onto test pieces made of structural steel SS400, as well as the effect of improvement in corrosion resistance by means of a coating reforming treatment. The following conclusions were obtained: the degradation in corrosion resistance of the coatings is attributable to increase in anodic solubility due to appearance of innumerable crevices as a result of deposited particles forming porous structure and due to drop of Cr content in the matrix caused by generation of oxides on the surface of the crevices, by which the corrosion progresses in the form of crevice corrosion; and denseness of the passive coating is lost on the surface of the deposited particles, accelerating the cathodic reaction. A suitable means that could be used practically in chloride solution would be a method to use a material with less crevice susceptibility such as Hastelloy C as a base material, and seal the crevice structure with epoxy resin, etc. 7 refs., 10 figs., 3 tabs.

  14. Aerodynamic characteristics of a wing near its tip using panel method. Panel ho ni yoru tandokuyoku yokutan fukin no kuryoku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Choi, J [Nagoya University, Nagoya (Japan); Sugiyama, Y [Nagoya University, Nagoya (Japan). Faculty of Engineering

    1992-01-05

    The study described in this paper is intended to evaluate the aerodynamic characteristics of a turbo machine wing or an aircraft wing near its tip, using the panel method. The paper describes the case of a rectangular wing with a large aspect ratio. The introduced linear simultaneous equation was solved using a computer, and compared with the experimental result. The result may be summarized as follows: The distribution of pressure on the wing near its tip using the panel method takes the same shape as that for the experimental result; the negative pressure calculated close to the wing's trailing edge near the wing tip is a result of a three-dimensional effect of the flow along the wing width; the calculation and the experiment showed an increase in local lift coefficient and locally induced resistance coefficient in the vicinity of wing tip; the speed component in the y'' direction explains the structure of the wing surface velocity forming wing backwash vortex given by the lift linearity theory; and the result of calculation on the pressure distribution in the wing chord direction near the wing tip is very close to the experimental result except for the wing flank in the close vicinity of the wing tip upstream of the wing chord middle point. 11 refs., 13 figs.

  15. Effect of burn-off on physical and chemical properties of coal char; Gas ka shinko ni tomonau sekitan char no tokusei henka

    Energy Technology Data Exchange (ETDEWEB)

    Yamada, T.; Tamura, K.; Hashimoto, H.; Funaki, M.; Suzuki, T. [Kitami Institute of Technology, Hokkaido (Japan)

    1996-10-28

    For high-efficiency coal gasification, investigations were given on effect of coal chars with different conversion rates on coal gasification reactivity. In coal gasification, reactivity of char after pyrolysis governs the efficiency. The reference char conversion in CO2 gasification of coal (weight loss) changes linearly in the initial stage of the reaction, but the reactivity declines as the end point is approached. Char surface area is as large as 400 m{sup 2}/g in the initial stage with the conversion at 20%, but it decreases in the final stage. This phenomenon relates closely with changes in pore size and crystalline structure. Change in the Raman value R which shows incompleteness of char graphite structure and amorphous carbon ratio suggests that an active portion with high reactivity is oxidized preferentially, and a portion with low reactivity remains finally. Minerals in coal are known to accelerate the gasification. However, their catalytic effect is related with chemical forms, and complex as they may change into inactive sulfides and silicates under severe reaction conditions. Change in forms of calcium compounds may also be involved in decline of the reactivity in the latter stage. 8 refs., 4 figs.

  16. Influence of molybdenum on hardenability of destabilized high chromium cast irons. Ko kuromu chutetsu no netsushori tokusei ni oyobosu moribuden no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Kuwano, M. (Ube, Collete of Technology, Yamaguchi (Japan)); Ogi, K. (Kyushu University, Fukuoka (Japan). Faculty of Engineering); Sawamoto, A. (Yamaguchi University, Yamaguchi (Japan))

    1991-07-25

    Alloy elements are added to compensate for reduction in hardenability of high chromium cast iron as a result of destabilization heat treatment. With the purpose of investigating the influence of the added elements, this paper describes investigations made on effects of Mo and destabilization heat treatment conditions on martensite transformation , eutectoid transformation and base hardness, using Fe-Cr-C-based alloy containing C at 1.6-3.6%, and Cr at 6.6-26%. The main results obtained are as follows: Mo and Cr had the distribution coefficient for initial crystal austenite is smaller than one and were microscopically segregated in the dendrite base; the solute element distribution in the base is homogenized as a result of the long-time destabilization heat treatment while the Cr and C concentrations reduce largely, and the Mo concentration increases slightly; Mo has little influence on the Ms point, and reduces with the smaller the Cr/C ratio and the higher the retention temperature; and the base hardness corresponds well to a CCT diagram. 14 refs., 11 figs., 1 tab.

  17. Luminescence property and lowest excited singlet state level of various carotenes; Shuju no karochinrui no hako tokusei to saitei reiki -juko jotai jun'i

    Energy Technology Data Exchange (ETDEWEB)

    Ito, T. [Miyagi Midical Univ., Miyagi (Japan)

    2000-01-01

    Specification of the lowest excited singlet state (S{sub l}) of the butadiene which is the simplest {pi} electron conjugated system molecule has not sufficiently clarified at present. Recently, Andersson et al. found the weak light emission which was considered to be the S{sub 1} fluorescence in a near infrared region in a room temperature solution of {beta}- carotene (n=11), and specified the S{sub 1} level in 14,200{+-}500cm {sup -1}. And, Fujii et al. reported the S{sub 1} fluorescence of spheroidine (n=10). In very recent, Christensen et al. measured the comparatively clear fluorescence spectrum of carotenes n=5 to 11 separated by HPLC in EPA glass at 77K, and systematically examined the unique luminescence property observed in polyene. Christensen et al. issued the warning for the rough conventional method that the S{sub 1} level was estimated from the S{sub 1} fluorescence lifetime of the polyene molecule using the comprehensive energy gap law, because the ratio of quantum yield of the S{sub 1} and S{sub 2} fluorescence is different by the substituent type of the polyene end even if n is same. (NEDO)

  18. Improvement performance and emissions in a diesel engine dual-fueled with natural gas; Tennen gas dual fuel diesel kikan no seino haishutsu gas tokusei no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Nakayama, S; Okamoto, T; Kusaka, J; Daisho, Y; Kihara, R; Saito, T [Waseda University, Tokyo (Japan)

    1997-10-01

    This paper deals with a study on combustion and emission characteristics of a direct injection diesel engine dual-fueled with natural gas. Dual fueling systems tend to emit high unburned fuel especially at low load, resulting in a decreased thermal efficiency. This is because natural gas-air mixtures are too lean for flame to propagate under low load conditions. Intake charge heating and uncooled EGR are very useful to improve emissions and thermal efficiency at low load. Such favorable effects are supported by NO kinetic simulations. 2 refs., 13 figs.

  19. Characteristics of combined levitation and guidance EDS maglev system. Fujo to annai wo ken prime yosuru yudo hanpatsu jiki fujo no tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Fujiwara, S; Fujimoto, T [The Railway Technical Inst., Tokyo (Japan)

    1992-05-20

    It is very important to reduce magnet resistance that is a kind of running resistance so as to reduce the energy of running, coils on the ground and capacity of the electric equipments in the EDS maglev system. There is a coil arrangement method that arranges the levitation coils on the side walls and is possible to reduce the magent resistance. According to this method, the coils are arranged in two stages: upper and lower stage and connected in opposite direction. The levitation coils are not electric conductive when the central height of the supper electric coil is agree with the central height of the levitation coil. In the present paper, the working principle of the combined levitation and guidance system, according to which the levitation coils are arranged on the side walls, is explaned, the basic characteristics are clarified by the numerical examples and confirmed by the running tests. Based on the results of the study, it is possible to make more detail examination from now on about the combined levitation and guidance system. 6 refs., 13 figs., 4 tabs.

  20. Achievement report for fiscal 1984 on Sunshine Program. Basic research on coal type and gasification characteristics; 1984 nendo tanshu to gas ka tokusei no kiso kenkyu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1985-03-01

    The study of pressurized fluidized gasification of coal chars started in fiscal 1975, and a 0.2t/d unit was in operation until fiscal 1979. Since fiscal 1980, a 1t/d unit has been in operation. In fiscal 1984, an entrained bed gasification furnace was constructed, capable of high-temperature gasification of various coals, and it is now undergoing a test operation. This report consists of pressurized gasification tests for coal char, the result of a study on the effect of coal type on the char gasification reaction rate, and the result of experiments on the treatment of coal liquefaction residue, all accomplished in the 1t/d gasification unit. For the investigation of the effect of coal type, chars of 13 types of coals are subjected to reaction tests in the carbon dioxide gas, and weight reduction rates and changes in residue surface areas are determined while reaction is under way. The results are analyzed and parameters are made clear that enable a quantitative assessment of the effect of coal type on gasification reaction rates. Pulverized grains and coal liquefaction residue are blended and gasified in the fluidized bed in the presence of oxygen and steam. As the result, a gas capable of 2,000kcal/Nm{sup 3} containing 30% hydrogen and 25% carbon monoxide is acquired, when catalyst grains in the residue are segregated. (NEDO)

  1. Study on properties of mortar using silica fume and ground blast furnace slag. Silica fume oyobi koro slag funmatsu wo mochiita mortar no tokusei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Shiiba, H; Honda, S; Araki, A [Fukuoka University, Fukuoka (Japan). Faculty of Engineering

    1992-09-01

    The effect of silica fume and ground blast furnace slag in concrete on the content of superplasticizer, and dynamic properties of hardened mortar with such admixtures were studied experimentally. Although the dependence of a flow value on the superplasticizer was dominated by kinds of superplasticizers, blast furnace slag enhanced the flow value resulting in a high fluidity. Adsorption of superplasticizers onto admixtures was dependent on kinds of superplasticizers, and adsorption onto blast furnace slag was 1.3-2 times that onto normal Portland cement (NPC). The compressive strength of mortar increased by mixing admixtures, while the bending strength was enhanced only by mixing silica fume. Mixing mortar was lower in dynamic elastic modulus than NPC mortar at the same compressive strength, and the velocity of supersonic wave in mortar was scarcely affected by mixing. 11 refs., 14 figs., 3 tabs.

  2. Analysis of crashes using FE vehicle models. Relations between vehicle types and crash characteristics; Yugen yoso model wo mochiita sharyo no shototsu kaiseki. Sharyo type to shototsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Takatori, O. [Japan Automobile Research Institute Inc., Tsukuba (Japan)

    2000-01-01

    The objective of this study is to analyze the crash characteristics of vehicles under the condition of real-world accidents. This paper pays attention to the differences in the crash characteristics of a vehicle colliding with a vehicle which is a different type. Vehicles on the market can be divided broadly into two vehicle structures, monocoque structure and frame structure. Monocoque structure is mainly used for passenger vehicles and frame structure is for recreational vehicles (RV). In recent years, RV has been a large seller on the market. So accidents between passenger vehicles and a RVs occur frequently. The analysis of experimental data and computer simulation, which is predicated on the experimental data, was carried out for this study. In the analysis of experimental data, barrier force data from the New Car Assessment Program (NCAP) were analyzed. The FE passenger vehicle model which is based on systematic validation tests was used for the computer simulation of car-to-car collisions. (author)

  3. Formation of secondary products in water purification. ; Charactarization of chlorination by-products. Josui shori ni okeru fukuseiseibutsu. ; Enso shori ni yoru shodoku fukuseiseibutsu no seisei tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Aizawa, T [The Inst. of Public Health, Tokyo (Japan)

    1993-12-10

    Chlorination of drinking water is an inevitable process for the purification of drinking water. It has been made clear that injected free chlorine reacts with organic matter in water to produce chlorinated by-products. Many of those compounds are toxic, and studies have been made on the international water quality standard. Water quality standard has been revised also in Japan. The sources of organic matter which is the cause for production of chlorinated by-products vary according to the kinds and conditions of the water source for drinking water. Removal of precursors in the original water, removal of by-products, and change in the disinfection system with alternate disinfectant for chlorine are among the measures for decreasing chlorinated by-products at water purification plants, but the first one is employed as the basis method. It is expected that more severe regulation may be imposed on the quality of the water source for drinking water, and more strict oxidation and disinfection systems is inevitable for water management based on the new water quality standard. 10 refs., 5 figs., 2 tabs.

  4. DC-transport properties of QMG(reg sign) current-limiting elements; QMG(reg sign) genryusoshi no chokuryutuden tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Morita, M.; Tokunaga, Y. [Nippon Steel Corporation, Tokyo (Japan); Miura, D.; Ito, D. [Tokyo Metroporitan University, Tokyo (Japan)

    1999-11-25

    The V-I properties of YBCO bulk superconductor (QMG(reg sign) :YBa{sub 2}Cu{sub 3}O{sub 7-x} single-crystal containing Y{sub 2}BaCuO{sub 5} particles) were measured using a single rectangular pule current at 77 and 87 K to obtain basic data for super-normal transition. Because of its high J{sub c} property, QMG is a promising bulk material for resistive-type HTC-FCL application. I-shaped QMG rods having cross sections of 0.5 x 1.0 mm were prepared to measure voltage due to pule current. The plots of ln V vs ln I yielded a straight line with a gradient ranging from 5 to 7. By changing the amplitude and length of pulses, the time from the start of sending electricity till the occurrence of quenching was obtained for various amplitudes of pulse current. In this experiment, it is considered that quenching did not occur in the whole rod but only in a small part of it. (author)

  5. Performance and exhaust emissions in a natural-gas fueled dual-fuel engine; Tennen gas dual fuel kikan no seino oyobi haiki tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Shioji, M.; Ishiyama, T.; Shibata, H. [Kyoto Univ., Kyoto (Japan). Inst. of Atomic Energy; Ikegami, M. [Fukui Institute of Technology, Fukui (Japan). Faculty of Engineering

    2000-07-25

    In order to establish the optimum fueling in a natural gas fueled dual fuel engine, tests were made for some operational parameters and their combination on the engine performances and the exhaust emissions. The results show that the gas oil quantity should be increased and gas oil injection timing should be advanced to suppress unburned hydrocarbon emission at middle and low output range, while the quantity should be reduced and the timing should be retarded to avoid onset of knock at high loads. The unburned hydrocarbon emission and the thermal efficiency are improved at the same load avoiding too lean natural gas premixture by restriction of intake charge air. However the improvement is limited because the ignition and initial combustion of pilot diesel fuel is deteriorated when the cylinder pressure is excessively lowered by throttling. The increase in pilot gas oil amount is effective for low-load operation and the adequate combination of throttle control and equivalence ratio ensures low hydrocarbon emission and the thermal efficiency comparable to diesel operation. (author)

  6. Flow and mixing characteristics in a stirred tank with dual wide paddles; 2 dan waido padoruyoku tsuki kakuhan sonai no ryudo{center{underscore}dot}kongo tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Takata, Kazutaka; Ito, Hisayoshi; Kikuchi, Masahiko; Okamoto, Yukimichi [Shinko Pantec Corp., Hyogo (Japan)

    1999-03-10

    Flow structure and mixing characteristics in a stirred tank with dual wide paddle impeller were examined using computational fluid dynamics (CFD). CFD was conducted using analysis code for fluid flow, and velocity measured by laser doppler velocimeter, power consumption and mixing time were used for evaluating computed results. The computed flow field and power consumption agreed well with themeasured values within 5 % mixing process well agreed with the observations. Since the computed flow pattern and mixing process agreed well with the measured values, computed results are useful for evaluating complex flow field in a stirred tank. A detailed investigation using computed results are useful for evaluating complex flow field in a stirred tank A detaile investigation using computed results shows that dual cross-installed wide paddle impellers lead to superior mixing performance in the stirred tank, and pressure gradient between upper and lower paddles is found to be the factor that promotes fluid transport in the tank, which is never the case when the dual wide paddles are installed in the same plane. (author)

  7. Transient heat characteristics of water-saturated porous media with freezing; Toketsu wo tomonau gansui takoshitsu sonai no hiteijo netsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sasaki, A [Akita National College of Technology, Akita (Japan)

    1998-02-25

    Analytical and experimental investigations were performed to examine the transient heat characteristics of water-saturated porous media with freezing. As a physical model, a two-dimensional vertical cavity was considered. One vertical wall was abruptly cooled below the fusion temperature. Other three walls were thermally insulated. Three different sizes of glass, and iron, alumina and copper beads were used as the porous media in this study. The cold energy stored up in the porous media and the average thickness of frozen layer were measured in the experiments. Comparisons of the analytical results with the experimental ones were made, and the effects of Darcy number, Stefan number and modified Prandtl number on the transient heat characteristics were discussed. The dimensionless equations for predicting the averaged frozen layer thickness and the stored cold energy were obtained as a function of various dimensionless parameters. 8 refs., 16 figs., 1 tab.

  8. Water infiltration and heat transfer in one dimensional unsaturated packed beds; Fuhowa ryushi sonai no ichijigen suibun nagare to dennetsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Aoki, K; Akahori, M; Hattori, M [Nagaoka University of Technology, Niigata (Japan); Shiraishi, N [Toshiba Corp., Tokyo (Japan)

    1998-05-25

    Water and heat transport in unsaturated packed beds due to supplying hot water have been investigated experimentally and theoretically. Using various sizes of glass beads, capillary pressure and permeability in packed beds were measured in unsaturated beds. The distributions in water saturation and temperature were predicted for one dimensional packed bed, based on a model assuming local thermal equilibrium among water, gas and particles at any specific space. The predicted temperature distributions were compared with the experimental results obtained using various glass sizes. In layered packed beds, water saturation becomes discontinuous at the interface of two layers because of the difference of the water characteristics between two beds. Water penetrates faster in coarse-over fine-textured profile compared with in fine-over coarse-textured profile. Similarly, the temperature rises faster in former profile under the same supplied heat quantity. 11 refs., 13 figs., 1 tab.

  9. Efflux Performance of Submicron Particles in Packed Bed under Periodic Pressure Conditions; Shuki atsuho ni yoru juten sonai sabumikuron biryushi no ryushutsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Ping, Z; Iritani, E; Murase, T [Nagaya Univ. Nagoya (Japan). Department of Chemical Engineering

    1997-09-01

    Permeation experiments of ultrapure water were conducted under periodic pressure conditions using a packed bed obtained by dispersing submicron particles of polymethyl methacrylate (PMMA) uniformly into a packed bed of particles of White Alundum. It is clearly demonstrated that washing performance under periodic pressure conditions where the permeation pressure is applied periodically is improved dramatically, compared with that under constant pressure conditions. It is also shown that the effect of periodic pressure operation is especially noticeable in the initial stage of the pressurizing period, and that a pressurizing time smaller than 2 min is very effective under conditions examined in this study. 4 figs.

  10. Ground characteristics at observation site of strong motion in Hachinohe Inst. Tech. Hachinohe, Aomori; Hachinohe Kodai konai ni secchishita kyoshin kansokuten no jiban tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sakajiri, N [Hachinohe Institute of Technology, Aomori (Japan)

    1997-10-22

    Discussions were given on ground structures in the city of Hachinohe and vibration characteristics of the grounds during earthquakes. In order to identify ground structures and vibration characteristics thereof in the city of Hachinohe, strong motion seismographs were installed in five locations of the city and in the Tohoku University. At the Hachinohe Institute of Technology, strong motion seismographs were installed underground (-65 m) and on the ground, where S-wave logging experiments were performed using the plank hammering method. The records therefrom were used to estimate Q values, and the Q values were used to compare the computed ground amplification characteristics with the spectral ratio of seismic waves in and on the ground. The analysis has conducted the Q value estimation on each bed from a depth greater than 4 m, whereas relatively reasonable values were derived only from sections from 4 m to 13 m, and other sections showed no stable values. According to the result of observations derived from the seismographs installed in and on the ground, the maximum amplitude of the ground surface seismograph was found about five times greater than that of underground in the NS components, about eight times in the EW components, and about six times in vertical movements. The result indicates that the amplitude is obviously affected greatly by the characteristics of the ground. 4 refs., 8 figs., 1 tab.

  11. Crack wave propagation along fracture with an induced low-velocity layer; Teisokudo no chika kiretsu zone wo denpasuru kiretsuha no bunsan tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Nagano, K [Muroran Institute of Technology, Hokkaido (Japan)

    1997-10-22

    A study has been performed on underground cracks working as a geothermy reservoir layer, with respect to characteristics of elastic waves propagating with their energy concentrated on a boundary between rocks around the cracks and fluid in the underground cracks, or `crack waves`. The study has modeled a multi-crack reservoir layer according to the three-layer structure of the fluid layer and low-velocity solid layers around the former layer, whereas crack waves propagating therein were discussed for their dispersion characteristics. As a result of discussions, a guideline to the crack wave measurement at actual fields was put together as follows: because the low-velocity layer affects the dispersion characteristics of the crack waves, the structure and characteristics of the multi-crack reservoir layer may possibly be evaluated by measuring the velocity of the crack waves; evaluating the low-velocity layers requires proper selection of frequency of the crack wave to be measured; for example, at the Higashi Hachimantai field, a crack wave of several hundred hertz must be analyzed; and thickness of the low-velocity layers around main cracks, which can be estimated from the velocity of the crack wave is two meters at the greatest. 6 refs., 3 figs., 2 tabs.

  12. Output characteristics of 40 kW photovoltaic power generation system in ICT; Ibaraki kosen ni okeru 40 kW taiyoko hatsuden shisutemu no shutsuryoku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sekiguchi, N. [Ibaraki National College of Tech., Ibaraki (Japan); Tani, T. [Science University of Tokyo, Tokyo (Japan)

    1999-11-25

    The photovoltaic power generation system consists of photovoltaic array and power conditioner of the utility connected system. The photovoltaic array parallelly constitutes 18 serial 30 of the modules of 540 sheets, and there is the generating capacity of largest 40 kW. The power conditioner uses 10 kW four units, and it is tracking with function of the maximum output point. This report examined the unconformable rate of photovoltaic array maximum output operating voltage, current and power in simulation and power conditioner input. (author)

  13. Oxidation characteristics of Ti-14Al-21Nb alloy at high temperature in purified oxygen; Ti-14Al?-21Nb gokin no sansochu ni okeru koon sanka tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Akai, M; Taniguchi, S; Shibata, T [Osaka University, Osaka (Japan). Faculty of Engineering

    1994-10-20

    The Ti-14Al-21Nb alloy called Super {alpha}{sub 2} is an alloy which has been improved of plastic transformation ability by adding Nb into Ti3Al with high specific strength, and is used for member materials in aircraft engines. In order to identify its oxidation characteristics, this paper discusses the oxidation characteristics under purified oxygen and atmospheric pressure in temperatures ranging from 1000 K to 1300 K. The experiment made a button-formed ingot with a diameter of 50 mm and a thickness of about 10 mm by melting and thermal refining, and used a thermobalance. Main conclusion thus obtained may be summarized as follows: the amount of increase due to oxidation after 100 ks oxidation at 1000 K is very small; oxidation between 1100 K and 1200 K follows nearly the parabolic rate laws; the scale consisted mainly of rutile, but a thin alumina concentration layer is formed; Nb is concentrated in the rutile-alumina mixed layer, and local fracture and regeneration are repeated at temperatures higher than 1300 K. 21 refs., 8 figs., 2 tabs.

  14. Characterization of algae removal in a fluidized bed biofilm reactor system for lake water treatment; Kokisei ryudosho seibutsu rokaho ni yoru kosuichu no sorui jokyo tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, T.; Tsuzuki, K.; Nishijima, N.; Takagi, T. [Hitachi, Ltd., Tokyo (Japan); Terazono, K. [Water Resources Environment Technology Center, Tokyo (Japan)

    1998-04-10

    This paper describes a pilot plant study on algae removal of a fluidized bed biofilm reactor system for lake water treatment. The system does not need backwashing because the fluidized bed suffers no clogging. Moreover, the system uses dissolved oxygen in influent water for aerobic biological treatment without aeration equipment. Thus, this system is a low energy and easy maintenance way to purify eutrophic lake water. The system was operated continuously at a flow rate of 1500 m{sup 3}/d{sup 1} for 9 months at Tsuchiura Port in Lake Kasumigaura. In this study, chlorophyll-a and dissolved oxygen in both influent and effluent water were monitored continuously. In summer (August to September) when water bloom occurred, the average removal efficiency of chlorophyll-a was 64% at the average influent chlorophyll-a concentration of 137.8 {mu}g/l{sup 1}. During the total experimental period (9 months), the average daily amount of removed chlorophyll-a was 40.3 g/d{sup 1} at the average influent chlorophyll-a concentration of 89.5 {mu}g/l{sup 1}. By analyzing the relationship between the removed chlorophyll-a and the consumption of dissolved oxygen, it was estimated that almost all of algae trapped in the reactor was degraded biologically. 20 refs., 12 figs., 2 tabs.

  15. Estimation of tire characteristics by concerning test data of vehicles; Jidosha no senkai shiken data ni yoru dire tokusei no suisan

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, M; Sekine, T; Nagae, H [Nihon University, Tokyo (Japan)

    1997-10-01

    To study and/or develop the vehicle motion of a braking in turns theoretically, the cornering characteristics of the tire under the action of braking forces must be required. On the other hand, such data are very few to be published and also there be few tire testing machine to be able to use. The authors tried to derive such data from the vehicle behaviors in steady turns and braking in turns. Because each wheel loads are unknown factors, the two wheeled vehicle model are employed in analysis. The methodology of analysis and the reasonable results are presented in this paper. 5 refs., 10 figs., 2 tabs.

  16. Experimental analysis of the structure attenuation characteristics on engine noise by pseudo cylinder pressure excitation; Giji tonaiatsu kashin ni yoru engine kozo no soon tokusei hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Ozawa, H; Nakada, T [Isuzu Advanced Engineering Center, Tokyo (Japan)

    1997-10-01

    The engine structure attenuation has been experimentally analyzed by the newly developed in-cylinder excitation system. It can reproduce the complete cylinder pressure in non-running engine conditions by adopting the hydraulic and the piezoelectric actuator. The structure attenuation measured in this system has a good coincidence with the ones measured in actually engine operating conditions, meanwhile the current method, which applied only high frequency components as the excitation pressure, was shown to have the unsatisfied agreement. As a result, the proposed system has been concluded to be very useful to estimate the engine noise characteristics in non-running conditions. 4 refs., 11 figs., 1 tab.

  17. Conduction and TSC properties of LB films adsorbing cyanine dyes; Cyanine shikiso kyuchaku LB maku ni okeru denki dendo oyobi netsushigeki denryu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Shinbo, K.; Kato, K.; Kaneko, F.; Kobayashi, S. [Niigata University, Niigata (Japan)

    1995-05-20

    The electric properties were investigated for phosphatidic acid (PA) LB films adsorbing cyanide dyes (NK-3) with sandwich electrodes. PA LB adsorbing the dyes and the monolayers of Cd salt without the dyes are deposited using subphases, containing various concentrations of the dyes and containing CdCl2 instead of the dyes, respectively. Conduction currents are measured at room temperature for the PA LB film devices. Increases in the conduction currents are observed in the LB films containing the dyes. Furthermore, the conduction currents remarkably increase using the Au upper electrode. The current(I) vs. voltage (V) properties nearly follow the Poole conduction, log(I)-V. Therefore, the conduction currents are very complicated and are thought to be due to composite mechanisms in the film and at the interface. TSC measurements are used to examine the dipolar polarizations in the PA LB films, in the temperature region between 150 K and 300 K. Remarkable increase of TSCs are observed above 260 K for the devices containing the dyes. The TSCs are caused by the dipolar polarizations, and increase with the quantity of the dyes contained in the LB devices and/or aggregations of the dyes. The results are useful for applications of ultrathin film devices in the future. 16 refs., 11 figs., 3 tabs.

  18. Shunt and series resistance of photovoltaic module evaluated from the I-V curve; I-V tokusei kara hyokashita taiyo denchi no shunt teiko to chokuretsu teiko

    Energy Technology Data Exchange (ETDEWEB)

    Asano, K; Kawamura, H; Yamanaka, S; Kawamura, H; Ono, H [Meijo University, Nagoya (Japan)

    1997-11-25

    With an objective of discussing I-V characteristics when a shadow has appeared on part of a photovoltaic module, evaluations were given as a first stage of the study on saturation current, shunt resistance and series resistance for the solar cell module. As a result of measuring change in amount of power generated in a sunny day with a shadow appearing over the solar cell module, reduction in power generation capability of about 23% was verified. In other words, the I-V characteristics of the solar cell module change largely because of existence of the shadow caused on the module. The I-V characteristics curve may be expressed and calculated as a function of the shunt resistance and series resistance. By curve-fitting measurement data for a case of changing insolation without existence of partial shadow, values of the shunt resistance and series resistance were derived. As a result, it was found that the calculations agree well with measurements. It was made also clear that each parameter shows temperature dependence. 6 refs., 10 figs., 1 tab.

  19. Fundamental analysis of thermally regenerative fuel cell utilizing solar heat; Taiyonetsu wo riyosuru netsu saiseigata nenryo denchi no kiso tokusei no kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Ando, Y; Tanaka, T; Takashima, T; Doi, T [Electrotechnical Laboratory, Tsukuba (Japan); Aosawa, T; Kogoshi, S [Science University of Tokyo, Tokyo (Japan)

    1997-11-25

    Study was made on a thermally regenerative fuel cell using solar heat. The thermally regenerative fuel cell was devised which is composed of 2-propanol liquid-phase endothermic dehydrogenation at nearly 100degC, and acetone liquid- phase exothermic hydrogenation at nearly 30degC as reverse reaction. This low-temperature dehydrogenation can relatively easily utilize a flat solar heat concentrator. 2-propanol dehydrogenation generates acetone and hydrogen. Generated acetone generates electric power in hydrogenation, generating propanol. This propanol regenerates acetone and hydrogen in dehydrogenation. The activity of Ru and Pt composite catalyst was considerably higher than that of Ru or Pt single catalyst. The activity was also higher in carbon felt or carbon cloth carrier than carbon plate carrier. The open circuit voltage of the fuel cell was estimated to be 110-120mV, nearly consisting with theoretical values. Short circuit current was also estimated to be 9-11mA, suggesting reduction of its internal resistance as an important subject. 4 refs., 5 figs., 2 tabs.

  20. Generation characteristics of photovoltaic power generation equipment at TEPCO R and D center; Gijutsu kaihatsu center taiyoko hatsuden setsubi no hatsuden tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Amano, K; Natori, K [Tokyo Electric Power Co. Inc., Tokyo (Japan)

    1997-11-25

    Solar battery arrays are installed at different tilt angles for actual measurement in an experiment conducted by TEPCO (Tokyo Electric Power Company, Inc.) Research and Development Center for the examination of their power generation characteristics. Arrays of polycrystalline silicon solar battery modules are positioned facing a direction +7 degrees swung from the south on the Center rooftop and verandah, and they are installed at tilt angles of 0, 30, 60, and 90 degrees. An analysis of system characteristics is conducted, and findings mentioned below are obtained. In fiscal 1996, the highest utilization factor of a yearly average of 11.3% is attained with the ones tilted at 30 degrees. As for the utilization factors at the other angles, they are 10.2% at 60 degrees, 8.8% at 0 degrees, and 8.0% at 90 degrees. The integrated design coefficient remains approximately constant irrespective of the different tilt angles of 0, 30, and 60 degrees. The overall design coefficient of the 90 degree-tilted array installed on the verandah is found to be 0.75, which is higher than those exhibited by the others. Appropriate routes of wirings for modules should be worked out to avoid the ill effect of the shadows of steel towers. 2 refs., 11 figs.

  1. Concentration characteristics and cell arrangement in luminescent concentrator PV modules; Keiko shukogata taiyo denchi module no cell haichi to shuko tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Inamura, A [Science University of Tokyo, Tokyo (Japan); Sakuta, K [Electrotechnical Laboratory, Tsukuba (Japan)

    1997-11-25

    A luminescent concentrator PV module requires no tracking equipment and can use scattered light. A mini PV module was prepared from a luminescent plate of 100times100times3mm, and a single-crystalline PV cell of 100times20mm. Characteristics of various prototype modules with different PV cell areas and cell arrangements were also measured. Four kinds of edge reflecting materials with different reflectances by various white coating were applied to Al sashes for module frames, and each sash was fixed on one edge of the luminescent plate. In experiment, 3 other edges were covered with black tapes to reduce each reflectance to 0%. Although PV module output was affected by reflectance of edges, the output was satisfactory at 90% or more in reflectance showing no difference in output. A concentrating efficiency decreased with an increase in luminescent plate (concentrator) area, while it was improved by cell arrangement with short optical pass length, and cell arrangement hardly affected by edge reflection. 4 refs., 7 figs.

  2. Characteristic on photovoltaic/thermal hybrid collector. Evaluation of excergetic theory; Taiyoko netsu hybrid collector no tokusei. Exergy ni yoru hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Iwawaki, H; Morita, Y; Fujisawa, T; Tani, T [Science University of Tokyo, Tokyo (Japan)

    1997-11-25

    Described herein are characteristics of photovoltaic (PV)/thermal hybrid collectors (PV/Ts), in which a PV module is combined with a plate-shape solar heat collector to simultaneously produce electric power and heat. Their efficiency is assessed by exergy. The test results indicate that the PV/T system gives a 1.07 times higher exergy than the PV system, 86.3 versus 80.7kWh. In terms of energy, the optimum values (OVs) are 5, 44 and 37% lower than the measuring values (MVs) for electrical energy, thermal energy and total exergy. In terms of exergy, on the other hand, OV is 5% lower than MV for electrical energy, but 893 times higher for thermal energy and 1.26 times higher for total exergy. As a result, the exergy level is 26% higher than that of a system which generates power as the main product and heat as the auxiliary product. 3 refs., 6 figs., 5 tabs.

  3. Evaluation of flux-trapping and magneto-resistibility of superconductors by ESR spectroscopy; ESR ho ni yoru chodendotai no jisoku hosoku to taijiba tokusei no hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Kusumori, T; Matsuura, K; Muto, H [National Industrial Research Institute of Nagoya, Nagoya (Japan)

    1995-09-28

    The abnormal sisal, which was observed in the ESR measurement of superconductors, was confirmed to be a non-ESR (non resonant) signal, from an ESR experiment applying parallel and vertically polarized microwave fields and from the calculation of the ESR transition probabilities. The field modulation dependence of the spectra revealed that the signal was composed of two components. From the modulation-scheme analysis and a study of type I and II superconductors, two components were assigned to the microwave responses to magnetizations trapped in the crystalline portion and at intergranular Josephson junctions. The former B and the batter J components are observed in the first derivative and absorption a form, respectively, and their polarities differently behave for the field sweep reversal. Based on these results, we have improved an ESR spectrometer, which makes it possible to measure separately two kinds of magnetization and to study the trapping ability and quantum flux. 11 refs., 12 figs., 1 tab.

  4. Improvement of In2O3-based CO sensor by using surface modifiers; Hyomen shushokuzai ni yoru sanka injiumukei soshi no CO kenchi tokusei no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Yamaura, H.; Miura, N.; Amaze, N. [Kyushu University, Fukuoka (Japan); Tamaki, J. [Ritsumeikan University, Kyoto (Japan); Moriya, K. [Osaka Gas Co. Ltd., Tokyo (Japan)

    1998-02-01

    Aiming at developing a semiconductor CO sensor applicable to the safety control of gas appliances, we carried out an extensive material search for promoters to In2O3-based elements. Among the elements added (0.5 wt%) with each of 12 transition metal oxides, the Co3O4-added one was outstanding in sensitivity and selectivity to CO at 200degC. Remarkably the sensing properties of this element could be improved further by the addition of Au (0.04 wt%). The doubly promoted element, Au(0.04 wt%)-Co(0.5 wt%)-In2O3, gave excellent characteristics in sensitivity to CO, selectivity to CO over H2 and other selected gases, and response rates at 250degC. The promoting effects of the additives were shown to originate from the proper enhancement of catalytic activity for CO oxidation. 11 refs., 9 figs.

  5. Improvement of the expression character of sand quality thing for pot SN; Shuka SN yo keisashitsu tsumemono no hatsugen tokusei no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Matsui, R.

    1999-02-01

    It guessed the occurrence mechanism of the hole in, and thing, which a un-barrier hole didn`t happen easily in, was developed the slight structure analysis of sand quality thing, which became a un-barrier hole with an actual opportunity, too. The influence of the metamorphosis of the quartz grows big as a result of the heat dynamics calculation when there are a few R{sub 2}O too much though the amount of liquid phase to form by reducing R{sub 2}O content in thing decreased and it could be estimated that a hole could be prevented. So, the influence of the metamorphosis was added by choosing the place of production of the quartz, and sand quality various things, which could prevent a hole, was developed. (translated by NEDO)

  6. Improvement of magnetic properties of Fe-50mass%Ni in MIM process; MIM process ni okeru Fe-50mass%Ni no jiki tokusei kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Miura, H. [Kumamoto University, Kumamoto (Japan). Faculty of Engineering; Fujita, S. [Kumamoto University, Kumamoto (Japan); Fujita, M.; Ninomiya, R. [Mitsuikinzoku Co. Ltd., Tokyo (Japan)

    2000-12-15

    Metal injection molding (MIM) process is hoped to be one of processing for required to more complicated parts of magnetic components. In this study, the effect of different types of powders (prealloyed and mixed elemental powders) on the magnetic properties of permalloy (Fe-50mass%Ni) through the MIM technique was investigated. Approximately 94% of theoretical density was obtained by using the prealloyed powder, and the retained carbon and oxygen contents were controlled to be low. On the other hand, 96% of theoretical density was obtained by using the mixed elemental powder, but the magnetic properties were inferior to that of prealloyed powder's because of high retained oxygen content. By using the carbonyl Fe powder with high carbon, the retained oxygen and carbon content could be controlled to be low, resulting in the improved magnetic properties. (author)

  7. Emission characteristics of multiple stage diesel combustion. Effect of exhaust gas recirculation; Nidan nensho diesel kikan no haishutsubutsu tokusei. EGR no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Hashizume, T.; Miyamoto, T.; Akagawa, H.; Tsujimura, K. [New A.C.E. Institute Co. Ltd., Tokyo (Japan)

    1998-05-01

    For an aim to reduce NOx emission from diesel engines, it has become possible to realize it with smoke emission maintained at low levels by taking the following steps: initial combustion is carried out as lean pre-mixed combustion by adopting early fuel injection; the fuel is injected again after completion of this combustion; and EGR is combined with two-stage combustion which performs diffusion combustion under high temperature atmosphere. When a large quantity of EGR is used, cylinder temperature drops to have ignition timing delayed in the first stage, serving for improving fuel consumption. The problem of increase in smoke generation is solved by optimizing the injection timing at the second stage to suppress smoke generation increase, resulting in realization of lower NOx emission. By completing the second-stage fuel injection before ignition of the first-stage injection, it was possible to realize further lower NOx emission. Smoke increase due to higher EGR ratio was suppressed by pre-mixing both fuels injected in the first and second stages, although this is a high load operation. In addition, oxygen concentration and cylinder temperature were reduced, the gas pre-mixture was homogenized, and combustion velocity was suppressed by delaying the angle of ignition timing. This made low smoke combustion at {lambda} = 1 possible even in compressed ignition combustion. 8 refs., 12 figs., 1 tab.

  8. Characteristics of radiation temperature and radiosity coefficient by means of infrared radiometer. Sekigai hoshakei ni yoru zairyo hyomen no hosha tokusei ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Okamoto, Y; Kaminaga, F [Ibaraki University, Ibaraki (Japan). Faculty of Engineering; Ishii, T; Sato, K [Ibaraki University, Ibaraki (Japan); Kurokawa, T [NEC San-ei Instrumentsu Ltd., Tokyo (Japan)

    1991-12-25

    A radiation thermometer was applied to the measurement and analysis of radiation temperature of the material surface. In this paper, the characteristics of the radiation temperature and the radiosity coefficient of gray body materials are investigatied. An infrared radiometer was used, which detects radiation energy in the region between 8 and 13{mu}m of wavelength. This infared radiometer has a Hg-Cd-Te photon radiation sensor. The variation of emissivity was measured for the four kinds of non-metalic materials, i.e., graphite, carbon fiber composite, Si-SiC ceramic, and black paint spread on an aluminum plate. As a result, the relationship between material temperature and radiation energy was made clear. Furthermore, the space-dependent variation of the radiation temperature and the radiosity coefficient was derived from the two-dimensional CRT image of the infrared radiometer. Consequently, the emmisivity variation gave a maximum for the carbon fiber composite surface rich in irregularity, and decreased in the order of graphite, Si-SiC, and black paint. 7 refs., 15 figs.

  9. Study of human interface for narrow road drive assist system considered characteristic of driver; Driver no tokusei wo koryoshita kyoro soko shien system no human interface no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Ikeda, A [Subaru Research Center Co., Tokyo (Japan); Amada, N; Kawashima, H [Keio University, Tokyo (Japan)

    1997-10-01

    The measurement of driver`s watching point, driving time on narrow road and the evaluation of stress etc. were conducted in order to construct the narrow road drive assist system using the stereo image recognition system. Consequently, the driver`s thinking process, stress factor and the indispensable information for this system were clarified. 4 refs., 8 figs., 3 tabs.

  10. Influence of strain hardening and thickness changes occurring in press forming process; Seikeiji no kako koka/itaatsu henka no buzai akkai tokusei ni oyobosu eikyo bunseki

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, M; Hirota, K [Mazda Motor Corp., Hiroshima (Japan); Nakazawa, Y [Sumitomo Metal Industries Ltd., Osaka (Japan)

    1997-10-01

    Most components of the body structure are produced by press forming. This process make a uniform metal sheet into a component that have various material characteristics and thickness. This paper describes the estimation method of material characteristics and thickness changes based on the measured Vickers hardness, and the influence of these changes on the crush performance by using FE analysis. 4 refs., 12 figs., 2 tabs.

  11. Output characteristics of floating type wave power generator system using a ball screw; Fuyugata nejishiki haryoku hatsuden sochi no shutsuryoku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Abe, T; Omata, K [Meiji University, Tokyo (Japan)

    1996-10-27

    A floating type wave power generator system using a ball screw is proposed. Output characteristics are simulated on the supposition of its employment aboard a navigational aid buoy. The relative linear movement produced by waves between the main body and float is transmitted via a load column to a ball nut and is converted into a rotary movement of a threaded shaft engaging the ball nut. Attached to the bottom end of the threaded shaft is a one-way clutch which connects to the generator axle when the relative velocity between the float and main body is positive. The simulation was conducted for a wave activated power generation buoy, 2.6m in outer diameter, 4.5m in length, and 6000kg in total mass. The buoy generated a mechanical output of 340kW when exposed to a sinusoidal wave 2.5 seconds in period and 40cm in wave height. A tank test was performed using a reduced scale model consisting of a ball screw, bicycle dynamo, and float, with the main body being 318mm in diameter and 833mm in length, when an average output of 4.51W was obtained at 60% efficiency. The results of the experiment agreed in some degree with the results of calculation, verifying the righteousness of the theoretical formula. 3 refs., 7 figs., 4 tabs.

  12. Characteristics on the heat storage and recovery by the underground spiral heat exchange pipe; Chichu maisetsu spiral kan ni yoru chikunetsu shunetsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Imai, I [Kure National College of Technology, Hiroshima (Japan); Taga, M [Kinki University, Osaka (Japan)

    1996-10-27

    The consistency between the experimental value of a soil temperature and the calculation value of a soil temperature given by a non-steady heat conduction equation was confirmed. The experimental value is obtained by laying a spiral heat exchange pipe in the heat-insulated soil box and circulating hot water forcibly in the pipe. The temperature conductivity in soil significantly influences the heat transfer in soil. The storage performance is improved when the temperature conductivity increases because of the contained moisture. As the difference between the initial soil temperature and circulating water temperature becomes greater, the heat storage and recovery values increase. A thermal core heat transfer is done in the spiral pipe. Therefore, the diameter of the pipe little influences the heat storage performance, and the pitch influences largely. About 50 hours after heat is stored, the storage performance is almost the same as for a straight pipe that uses the spiral diameter as a pipe diameter. To obtain the same heat storage value, the spiral pipe is made of fewer materials than the straight pipe and low in price. The spiral pipe is more advantageous than the straight pipe in the necessary motive power and supply heat of a pump. 1 ref., 11 figs., 1 tab.

  13. Burning rate characteristics of energetic CMDB propellants. Part 2. Effect of HMX addition; Ko enerugi CMDB suishin yaku no nensho sokudo tokusei ( II ) - HMX tenka no koka -

    Energy Technology Data Exchange (ETDEWEB)

    Aoki, I. [Nissan Motor Co. Ltd. (Japan)

    1997-08-01

    Burning rate and specific impulse of a solid propellant are extremely important parameters in a design of a solid rocket motor. In this study, the relations between the burning rate and the amount of energy contained in HMX-CMDB propellants wherein the amount of energy is varied by adding HMX (High Melting Point Explosive). The following results are obtained. The final flame temperature is getting higher when the amount of energy is increased by adding HMX into a double-base propellant. The higher the final flame temperature is, the lower the burning rate is. Dark zone temperature, as a physical property, is lowered when the containing amount of energy is increased by adding HMX into the double-base propellant. This is because that, when weight fraction of HMX is increased, reaction heat at burning surface decreases, and the reaction in fizz zone is getting slower. The higher the dark zone temperature is, the higher the burning rate is. 20 refs., 11 figs., 1 tab.

  14. Cavitation characteristics of multihole diesel-fuel nozzles in high-speed oil flows. Diesel kikan yo nenryo tako nozzle no abura cavitation tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Yokota, M. (Shimonoseki Univ. of Fisheris, Yamaguchi (Japan)); Ito, Y. (Hachinohe Inst. of Tech., Aomori (Japan)); Aoki, H. (Xexel-Gleason U.S.A. Inc., New York (U.S.A))

    1991-07-25

    Recently, since higher velocity and higher pressure are required for diesel injection systems, cavitation behaviors in high velocity oil flows are strongly interested in such as 100 to 500 m/s for oil flow velocity and less than the cavitation factor {sigma} of 0.01. In this paper, oil cavitation characteristics at the injection part of multihole nozzles, especially on the flow characteristics, were studied systematically using fuel injection multihole nozzles for an actual use. As a result, it was clarified that subcavitation area (sub C), transition area, and supercavitation area (SC) could be existing in C{sub d}-{sigma} relation, which was similar to that specified cavitation conditions could be exisiting in the actual working area of multihole nozzles. And it was also clarified that flow coefficient C{sub d} relied on Reynolds number R{sub e} in the transition of {sigma}{ge}{sigma}{sub cr} and in {sub C} area, and mainly relied on {sigma} in SC area of {sigma}<{sigma}{sub cr}. Moreover, it was also confirmed that such tendency was similar to the one of the two-dimensional contraction of an area. 22 refs., 10 figs., 1 tab.

  15. Effect of Water Environment on Subcritical Crack Growth of Machinable Ceramics; Kaisakusei seramikkusu no kiretsu shinten tokusei ni oyobosu mizu kankyo no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Ikeda, K.; Kaizu, K.; Inotani, T. [Miyazaki Univ., Miyazaki (Japan); Yoshikawa, A.; Adachi, K.; Igaki, H. [Osaka Sangyo Univ., Osaka (Japan)

    1997-06-15

    The fatigue behavior of ceramics has been discussed on the basis of the relation between stress intensity facter (KI) and crack velocity (V). In this paper, the effect of environment on the relation between KI and V was studied on machinable ceramics (mica glass ceramics) and two kinds of glass ceramics with different grain sizes. The double torsion (DT) technique was used for the determination of the KI-V characteristics under different environments of air and ion-exchanged water. The characteristics of acoustic emission (AE) during stress corrosion cracking of mica glass ceramics was also examined. In water environment, the region II in the KI-V curve, in which crack velocity varies slowly with KI, disappeared. From this experimental fact, it was considered that at high KI, the crack velocity is encouraged by diffusion of the corrosive species to the crack and thus depended on the amount of water. SEM farc tography revealed that mica single crystals in the material caused crack arrest and deflection to occur. It is also found that AE event rate is quantitatively related to the crack velocity. AE measurement can be used in studying the crack propagation behavior of mica glass ceramics. 11 refs., 12 figs., 3 tabs.

  16. Studies on the friction and wear properties of synchronizer rings and gear cones; Shinkuro kiko ni okeru masatsu mamo tokusei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Hayashi, K; Kunoki, T [COSMO Research Institute, Tokyo (Japan)

    1997-10-01

    The influence of materials of synchronizer rings, automotive gear oils and sulfur-phosphorus EP additives on the friction and wear properties of synchromesh system was studied by using a synchromesh friction tester. As a result, the durability was decreased by using the synchronizer ring made of copper alloys. The initial friction performance estimated by using the synchronizer ring made of resin have influence on EP additives, in particular some kinds of phosphorus type additives. 3 refs., 12 figs.

  17. Effect of ATF on frictional property of wet-type clutch; Shisshiki crutch (hasshin clutch) no masatsu tokusei ni oyobosu ATF no eikyosei

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, J; Nagashima, T; Yamane, T; Kawauchi, s; Hirao, Y [Honda R and D Co. Ltd., Tokyo (Japan)

    1997-10-01

    As a starting device for continuously variable transmission, wet-type multiple disc clutch installed to the driven side (Starting clutch system) is suitable system. Starting clutch system is feared to occur the judder phenomenon, because it is used at low slipping velocity like a lock up clutch. In this report, we studied to prevent the judder phenomenon about the effect of automatic transmission fluid on frictional property of the wet-type clutch. 6 refs., 7 figs., 2 tabs.

  18. Explosion properties of aluminum/oxidizer mixtures in a closed vessel; Aluminium/sankazai kongobutsu no mippei yokinai deno bakuhatsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Miyake, A.; Aochi, T.; Shiraki, K.; Ogawa, T. [Yokohama National University, Yokohama (Japan). Faculty of Engineering

    1995-10-31

    In order to understand explosion properties of aluminum/oxidized mixtures for firework a closed vessel test was carried out, and pressure profile and ignition delay time were measured. It was found that flake aluminum (Al(f))/oxidized mixtures were more reactive and showed higher pressure values than those of atomized aluminum (Al(a))/oxidized mixtures. At a positive oxygen balance region Al(f)/oxidized mixtures showed a good agreement with the theoretically predicted values of combustion pressure at a constant volume. The combustion parameters with equilibrium calculation of aluminum/potassium chlorate showed almost the same ones of aluminum/potassium perchlorate. Furthermore, to investigate the influence of particle diameter of potassium chlorate on the explosion properties of Al(f)/potassium chlorate mixtures, the same kind of closed vessel test was performed and it was found that the mixtures became less sensitive and reactive with the increase of particle diameter. 17 refs., 7 figs., 2 tabs.

  19. Heat recovery properties from fuel cell system for telecommunications use; Tsushin`yo nenryo denchi system ni okeru hainetsu kaishu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Ishizawa, M.; Iida, S.; Abe, I.; Yamamoto, M. [NTT Integrated Information and Energy Systems Laboratories, Tokyo (Japan)

    1997-08-20

    NTT is developing a phosphoric-acid fuel-cell energy system for telecommunication co-generation systems to reduce energy costs and help preserve the environment. Fuel cells are used to provide electrical power to telecommunication equipment and the heat energy that is generated is used by the absorption refrigerators to cool the telecommunication rooms throughout the year. We field-tested this fuel-cell energy system in a telephone office. Two heat recovery methods were applied in the test: one uses direct steam heat recovery from fuel-cell stack coolant to keep the heat recovery temperature high and to avoid requiring a heat exchanger for the recovery; the other uses heat recovery from the reformer exhaust gas that is directly in contact with the heat recovery water to recover heat more economically. Our field tests confirmed that the average efficiency of heat recovery from fuel-cell stack coolant is 16%, and from the reformer exhaust gas is 9% under 80-kW continuous operation. Maximum total efficiency including electrical power efficiency was confirmed to be about 73% under the condition of 100-kW and an S/C ratio of 2.5 in the winter period: heat recovery from the fuel-cell stack coolant was 23%, from the reformer exhaust gas was 10%, and from electrical conversion was about 40%. 9 refs., 12 figs., 1 tab.

  20. Hear recovery properties from fuel cell system for telecommunications use; Tsushin`yo nenryo denchi system no fuirudotesuto ni okeru hainetsu kaishu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Ishizawa, M.; Iida, S.; Abe, I.; Amanuma, H. [NTT Integrated Information and Energy Systems Laboratories Tokyo (Japan); Uekusa, T.; Waragai, S. [NTT Power and Building Eacilities Inc., Tokyo (Japan)

    1997-12-20

    NTT is developing a phosphoric acid fuel cell energy system for telecommunication co-generation systems to reduce energy costs and help preserve the environment. Fuel cells are used to provide electrical power to telecommunication equipment and the heat energy that is generated is used by the absorption refrigerator to cool the telecommunication rooms throughout the year. We fieldtested this fuel cell energy system in a telephone office for three years. Heat recovered water from fuel cell stack coolant was supplied to the absorption refrigerator and further extra-heat was recovered by a heat exchanger. The toral heat recovery amount was about 86000 kca/h (the heat recovery efficiency was 20%) under 200kW operation. The absorption refrigerator was supplied about 49000kcal/h of heat and operated with 0.7 of coefficient of performance throughtout the year. The electrical efficiency was maintained more than 38% after 13000h operation. 12 refs., 10 figs., 3 tabs.

  1. Breakdown characteristics of electro-negative gases under needle-plane gap. Hari-hiraita gap ni okeru denkiteki fusei gas no zetsuen hakai tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Nakayama, H.; Onoda, M.; Amakawa, K. (Himeji Institute of Technology, Hyogo (Japan)); Kuroda, S. (Nitto Denko Corp., Tokyo (Japan))

    1990-07-20

    The voltage-time (V-t) characteristics of corona onset and breakdown were examined in electro-negative gases as SF {sub 6} and CCl {sub 2} F {sub 2}, using a needle-plane electrode with small gap and {mu} s square pulse voltage with various wave fronts. The V-t characteristics in electro-neutral gas as N {sub 2} ordinarily descended rightwards, but those in SF {sub 6} descended rightwards only in smaller gaps and lower gas pressures. In the pulse voltage with shorter wave fronts, those in SF {sub 6} also offered a particular shape descending leftwards. The particular shape was dependent on the steepness of the pulse wave front, being strongly affected by shorter wave fronts, and also strongly related to the onset and development length of corona. The particular phenomenon of V-t characteristics was observed more obviously at a positive needle than negative one without any extremely long corona lengths at negative one, indicating a polarity effect. The phenomenon was also observed in CCl {sub 2} F {sub 2} as particular one in electro-negative gases. 21 refs., 12 figs.

  2. Development of metal complexes which has a novel type of dhotocatalysis activity; Shinki hikari shokubai tokusei wo yusuru kinzoku sakutai no sousei

    Energy Technology Data Exchange (ETDEWEB)

    Ishitani, Osamu [Saitama University, Saitama (Japan). Graduate School of Sceince and Engineering

    1999-12-16

    Purpose of this research are (1) development of photocatalysts which selectively drive hydride transfer and (2) their application to the enantioselective reduction of an unsaturated substrate. photocatalysis of [Ru(bpy){sub 2}(py){sub 2}]{sup 2+} (1) and [Ru(tpy)(bpy)(py)]{sup 2+} (2) (bpy=2,2'-bipyridine, tpy=2,2' : 6',2' '-terpyridine, py=pyridine) for reduction of unsaturated compounds was investigated using triethylamine as a reductant. Formation of the hydrogenated compounds was observed but the corresponding one electron reduced compounds were not detected at all. The complex 1 photocatalysed the reduction of trifluoroacetophenone (5) and gave the alcohol in a 67% yield but 2 gave only a 27% yield. The reaction proceeds via the photosubstitution of a py ligand of the ruthenium complex, followed by photochemical formation of the hydride complex. The ruthenium hydride complex reacts with 5 to give [Ru(tpy)(bpy)(OCHPhCF{sub 3})]{sup +} (4). Dissociation of 4 to the alcohol was not efficient and the yield was 10%. (author)

  3. Learning model of eye movement system based on anatomical structure; Kaibogakuteki kozo ni motozuita gakushu kino wo motsu gankyu undo system to sono tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, X.; Wakamatsu, H. [Tokyo Medical and Dental University, Tokyo (Japan)

    1998-07-01

    A learning system is proposed to explain the adaptive function of an eye movement consisting of compensatory and optokinetic reflex, and pursuit movements based on the brain anatomy and physiology. Thereby, the learning system is synthesized as an artificial neural network based on the structure and function of the biological neural network of flocculus. The role of neural paths into flocculus from stretch receptors of ocular muscles are discussed in detail from the viewpoint of system control engineering. The mathematical learning process is also shown taking into account the adaptive mechanism and the anatomical structure of vestibular nuclei. The experimental results through simulation confirm the validity of the hypothesis and the appropriateness of the inference process in connection with the proposed mathematical model. 18 refs., 11 figs.

  4. Evaluation of damping property of long-span prestressed concrete cable-stayed bridges; Chodai PC shachokyo no gensui tokusei ni kansuru kosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Yamanobe, S.; Niihara, Y.; Minami, H.; Kono, T. [Kajima Corp., Tokyo (Japan)

    1999-09-30

    As to the dynamic design in the antiseismic design of PC cable-stayed bridges, evaluation of damping is important. Since it is difficult to evaluate damping property theoretically and analytically, a lot of studies have not been made about how to set up damping coefficients. In this study, using analytical models of existing long-span PC cable-stayed bridges, to clarify causes of damping of long-span PC cable-stayed bridge, the rate of strain energy in each member was examined. Equivalent damping coefficients of each member, effects of friction in movable bearing, and effects of basically radiational damping were studied. The correspondence with the results of the vibration experiments conventionally made were studied. (translated by NEDO)

  5. Aerodynamics of the cable of cable-stayed bridges; Shachokyo cable no kuriki shindo tokusei no rikai to soreni motozuku kuriki seishinho no teian

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, M. [Kyoto University, Kyoto (Japan). Faculty of Engineering; Aoki, J.; Fuji, D. [West Japan Railway Company, Osaka (Japan); Kitayama, N. [Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan); Daito, Y. [Kyoto University, Kyoto (Japan)

    1996-07-21

    Wind tunnel tests were conducted assuming the aerodynamics of the cable of cable-stayed bridges especially in the case of strong wind with rain. Based on the results, an aerodynamic damping method was proposed. Factors of the rain vibration generation include the three-dimensional axial flow behind the cable, which is formed by the wind direction deviation angle, the upper side water flow on the cable surface formed by the rain, and the Karman vortex shedding, which are not uniform in the span direction. Newly proposed cable with elliptical plates showed an effective dumping performance. It restrains the formation of water flow due to its profile, and is effective for unstableness due to water flow formation. Distribution of the axial flow in the cable span direction was made clear. Three-dimensionality of the vortex shedding was greatly affected by this axial flow. Frequency of the Karman vortex shedding changed in the wide band by the axial flow. It was suggested that three-dimensionality of the flow field is enhanced by the rolling vibration, resulting in the unstableness of heaving vibration. 5 refs., 15 figs.

  6. Analysis of vibration characteristics of a prestressed concrete cable-stayed bridge using strong motion observation data. Jishin kansoku ni motozuku PC shachokyo no shindo tokusei no kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Inatomi, T. (Port and Harbour Research Institute, Kanagawa (Japan)); Takeda, T.; Obi, N.; Yamanobe, S. (Kajima Corp., Tokyo (Japan))

    1994-05-31

    Records of seismic observation were analyzed for the purpose of proving the validity of antiseismic design for a prestressed concrete (PC) cable-stayed bridge. This bridge is a three span continuous PC cable-stayed bridge of 498 m in bridge length, and is constructed on alluvial soft ground. The seismometer used is a servo type accelerometer. The observed frequency and mode of seismic vibration are in good agreement with those in the analysis and hence the validity of modelling of the structure in designing was confirmed. It was also confirmed that the bending vibration and torsional vibration of the main girder are separated as designed. However, some points such as a large difference in the observed vibration and analysed vibration in the mode accompanying rotation of the base are listed as problems to be solved in antiseismic design. In order to investigate the attenuation constant of the upper structure, a seismic wave response analysis was performed and its results were compared with observed ones. When the attenuation constant is assumed to be 2%, agreement of data between analysis and observation is good, and it is considered that the attenuation constant of the upper structure only without the effects of attenuation of energy escape from the base and crack generation in concrete was about 2% in the observed earthquake (maximum acceleration on the ground: 51 Gal). 8 refs., 9 figs., 2 tabs.

  7. Experimental study on buckling and ultimate strength of thin-walled box stub columns; Usuniku hakogata danmen buzai no zakutsu / shukyoku kyodo tokusei ni kansuru jikkenteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Nakai, H.; Kitada, T. [Osaka City Univ. (Japan); Oryu, T. [Kawasaki Heavy Industries Ltd., Kobe (Japan)

    1998-10-21

    Thin-walled box stub columns such as beams of cable-stayed bridge, suspension bridge tower, arch rib of arch bridge and steel piers and so forth can also bear torsion at the same time besides compression and bending. These thin-walled box stub columns may achieve ultimate condition before reaching to plastic condition due to the effect of local buckling and so forth. Accordingly, it is the important topic to study the properties regarding ultimate strength of thin-walled box members in order to evaluate correctly the effect on load bearing resistance of local buckling. In this report, validity of load bearing resistance curve and ultimate strength interaction curve proposed by authors was studied using load bearing capacity experiment results. As a result, all ultimate strengths obtained by the experiment were higher than the ultimate strengths estimated by load bearing capacity curve and ultimate strength interaction curve. Further, it was revealed that the specimens subjected to torsion or subjected to bending and torsion and so forth exceeded the plastic strength due to the effect of strain hardening. 12 refs., 14 figs., 4 tabs.

  8. Identification of dynamic characteristics by field vibration test in Tsurumi Tsubasa bridge; Tsurumi Tsubasakyo no shindo jikken ni yoru doteki tokusei no dotei

    Energy Technology Data Exchange (ETDEWEB)

    Yamaguchi, H. [Saitama University, Saitama (Japan). Faculty of Engineering; Takano, H.; Ogasawara, M.; Shimosato, T. [Metropolitan Expressway Public Corp., Tokyo (Japan); Kato, M.; Okada, J. [NKK Corp., Tokyo (Japan)

    1996-07-21

    Field vibration test of the Tsurumi Tsubasa Bridge, a long span cable stayed bridge, has been conducted. Focusing on its dynamic characteristics, an identification method from test results and its validity were investigated. The natural frequency identified using mode circle and resonance curve from steady vibration test agreed with that identified by the peak method from free damping test. Accordingly, there was no difference due to identification methods, and both methods provided appropriate accuracy. The natural vibration mode obtained from the steady vibration test agreed with that obtained by the eigenvalue analysis. The dispersion of experimental values, which indicates the adaptation to mode circle method, became a scale indicating reliability of identified values. When the damping obtained by the half power method for the microtremors test is compared with that identified from the steady vibration test and free damping test, it is required to compare them at lower amplitude level region, considering that the amplitude level of microtremors test is very low. For the dynamic characteristics of the Tsurumi Tsubasa Bridge, it was found that it has lower natural frequency and higher modal damping compared with other cable stayed bridges with similar scale of span. 18 refs., 13 figs., 4 tabs.

  9. Ultimate evaluation report on research and development of basic technologies for next-generation industry. Conductive polymeric materials; Jisedai sangyo kiban gijutsu kenkyu kaihatsu saishu kenkyu kaihatsu hyoka. Dodensei kobunshi zairyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-05-01

    Basic technologies are established that equip polymeric materials (insulators in general) with conductivity similar to that of metals for the realization of novel conducting materials characterized by light weight, high resistance to corrosion, and ease of machining, and for the manufacture of novel electrical/electronic materials having new functions different from those of conventionally used metals. The aims are to realize a conductivity of 10{sup 5}S/cm or more, to manufacture materials sufficiently stable when left in the ordinary or inert atmosphere, and to manufacture materials which may be machined into proper shapes as required in the industry. The results of the 10-year-long development endeavor greatly contribute to the creation of high-level materials, the systematization of technologies, and the elucidation of the conducting mechanism. In relation to polymeric materials, in particular, a new technology is developed that equips, with high reproducibility, polymeric materials with conductivity similar to that of silver or copper; a graphitic material is created for the first time provided with conductivity superior to that of metals; and conducting polymeric materials are equipped with an easy-to-machine feature. A great contribution is accomplished to the production of superconductivity in organic charge-transfer complex crystals and to the elucidation of the conducting mechanism. (NEDO)

  10. Research and development project in fiscal 1988 for fundamental technologies for next generation industries. Achievement report on research and development on high crystallinity polymeric materials; 1988 nendo kokesshosei kobunshi zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1989-03-01

    With an objective to realize structural materials characterized by light weight, high corrosion resistance and easy-to-process performance, research and development has been performed on high crystallinity polymeric materials. This paper summarizes the achievement in fiscal 1988. With regard to monophyletic materials, using thermotropic liquid crystal polyallylate as the object, researches were performed on optimization, polymerization, and elongation fluid orientation processing of the polymer chemical structures. In the polyphyletic materials, discussions were given on aromatic heterocyclic polymers as to the synthesizing process for PIBO expected of higher elasticity rate than with PIBT. Discussions were given on the phase transfer transient film making process for molecular composites for an attempt of enhancing performance of tapes and laminates. With regard to cross-linking materials, forming and improvements were discussed on heat hardening molecular composites of ionic/inorganic hybrid cross-linking polymer, modified ion cross-linking polymer, poly-ion complex, and diacetylene polymer. In addition, researches were performed on the high-density three-dimensional cross-linking process and inter-molecular reinforcement of mono-axially and highly oriented substances to obtain high elasticity forms. (NEDO)

  11. Research and development project in fiscal 1989 for fundamental technologies for next generation industries. Achievement report on research and development on electrically conductive polymeric materials; 1989 nendo dodensei kobunshi zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1990-03-01

    With an objective to develop electric and electronic materials characterized by light weight, high corrosion resistance, and easy-to-process performance, and by having functions different from electricity conduction mechanism of metals, researches have been performed on fundamental technologies for electrically conductive polymeric materials. This paper summarizes the achievements in fiscal 1989. In new hydrocarbon conjugate polymers, researches were performed for the purpose of fabricating the conjugate system polymer and dopant complex system conductive thin films, and polyacene system polymer thin films. In developing the vehicular conjugate conductive materials, discussions were given on enhancing the molecular weight dependence and the conductivity by cross-linking the conjugate system, with regard to hydrocarbon system polymers that go through vehicular polymeric intermediates. In the research of vehicular graphite materials, it was discovered that mono-axial mono-plane PPV films and PTV films are graphitized. In developing the hetero aromatic system polymers, researches were advanced on the correlation among the gegen ions, high-order structures, and electric conductivity, mainly on polypyrrole. (NEDO)

  12. Research and development of basic technologies for next generation industries, 'high-efficiency polymeric separation membrane material'. Evaluation on first term final research and development; Jisedai sangyo kiban gijutsu kenkyu kaihatsu. Kokoritsu kobunshi bunrimaku zairyo (daiikki kenkyu kaihatsu hyoka)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1985-03-30

    The first term has performed research and development placing emphasis on that 'the basic study on membrane separation is to be performed systematically to elucidate governing factors in membrane separation'. With respect to water/ethanol separation by using the penetration gasifying method, it was indicated that excellent separation performance can be exhibited by using natural polymers having sugar chain skeleton as a raw material, and by controlling the membrane structure by means of membrane manufacturing methods. For enhancement of performance in water selective permeation type separation membrane, it was shown experimentally that it is important to select a membrane suitable for the object of separation and a separation method that uses the selected membrane. Regarding the water/ethanol separation, it was shown theoretically that the penetration gasifying method can save more energy than the conventional distillation method, where the development target was presented. It was recognized that impregnation type liquid membrane using crown ether can separate amino acid optical isomers. High separation performance was obtained in carbon monoxide/nitrogen separation by using fluid carrier that uses cuprous iodine/1-methyl imidazole. (NEDO)

  13. Research and development project in fiscal 1988 for fundamental technologies for next generation industries. Achievement report on research and development on electrically conductive polymeric materials; 1988 nendo dodensei kobunshi zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1989-03-01

    With an objective to develop electric and electronic materials characterized by light weight, high corrosion resistance and easy-to-process performance, and having functions different from those of electricity conduction mechanism of metals, research and development has been performed on fundamental technologies related to electrically conductive polymeric materials. This paper summarizes the achievement in fiscal 1988. In the research of the new hydrocarbon conjugate system polymers, fabrication was performed on the LB film mixed with different dopant molecules and photo-polymerized LB molecules. Discussions were given on their effects on the order and electric conductivity of the film cumulative structure. In the research on the vehicular conjugate system conductive materials, conduction improvement was advanced on PPV and PTV by purification of the primary structure and by identification of the effects of the higher-order structure. Basic knowledge was obtained on continuous manufacture of the graphite film. In the research on thin graphite film synthesized at low temperatures, entire design was made on the thin graphite film low-temperature synthesizing device, whereas the synthesized sections were completed excepting the laser assisted section. In the research of hetero aromatic system polymers, investigation was executed on polypyrrole as to its correlation with gegen ions, higher-order structure, and conductivity. (NEDO)

  14. Research and development project in fiscal 1989 for fundamental technologies for next generation industries. Achievement report on research and development on high-crystalline polymeric materials; 1989 nendo kokesshosei kobunshi zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1990-03-01

    With an objective to expand applications of polymeric materials having features of light weight, high corrosion resistance, and easy-to-process performance, researches have been performed on fundamental technologies for high-crystalline polymeric materials. This paper summarizes the achievements in fiscal 1989. In monophyletic system materials, thermotropic liquid crystal polyarylate was taken as the object to study optimization of the polymeric chemical structure, and elongation and fluid orientation processing. In the research of polyphyletic materials by means of special dissolution forming, researches were carried out on elastic modules manifestation factors of poly-PIBO, and the relationship between the melting viscosity and the orientation performance of polyazomethine. For molecular composite formed polyphyletic materials, a tape with tensile modulus of elasticity of 142 GPa using aromatic copolyamide as matrix, and laminates with bending modules of elasticity of 110 GPa were obtained. Regarding cross-linking system materials, synthesizing, forming, and improvements were discussed on hybrid cross-linking polymers containing multiple number of cross-linking functional groups. In addition, research was performed on a poly-functional diacetylene based material as a three-dimensional cross-linking material with high elasticity modulus of new conception having covalent linkage. (NEDO)

  15. Report for fiscal 1998 on results of research and development of silicon-based polymeric material. Material research for the liquid methane fueled aircraft engine; 1998 nendo keisokei kobunshi zairyo no kenkyu kaihatsu seika hokokusho. Methane nenryo kokukiyo engine kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Research was conducted for the purpose of establishing basic technology concerning molecular design, synthesis, material formation, and evaluation of silicon-based polymers which are expected to provide superior electronic/optical functions, high heat/combustion resistance and dynamic properties. The research subjects were such as following: research and development of silicon-based polymeric materials with sea-island microstructures; research and development of silicon-based polymeric materials with sea-island microstructures; research and development on IPN formation with silicon-based polymers; research and development of hybrid silicon polymers with organometallic compounds; research and development of silicon containing polymer materials with ring structures; general committee for investigation and research; the optimized low-temperature Wurtz synthesis and modification of polysilanes; study of unsaturated and hypercoordinate organosilicon compounds; basic studies on the synthesis and properties of silicon-based high polymers; studies of new monomer-synthesis and their polymerization reaction; studies on new method of preparation and functionalization of polysilanes; novel applications of silicon-based polymers in imaging devices for information display, memory, and recordings; and molecular design of silicon-containing {pi}-conjugated and {sigma}-conjugated compounds. (NEDO)

  16. Research and development of basic technologies for next generation industries, 'electrically conductive polymeric material'. Evaluation on first term research and development; Jisedai sangyo kiban gijutsu kenkyu kaihatsu. Dodensei kobunshi zairyo (daiikki kenkyu kaihatsu hyoka)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1985-03-30

    The research and development in the first term has searched widely different kinds of raw materials, elucidated electricity conduction mechanism, discussed processing technologies and evaluation methods. It also included molecule designing to develop new raw materials. A method for growing good single crystals of charge migrating complexes was developed, and (BEDT-TTF){sub 2}I{sub 3} crystals were found to manifest superconductivity at 8K under pressure of 1.3 kbar. In addition, elucidation was made on conduction characteristics of (TMTSF){sub 2}ClO{sub 4} being an induction superconductor, and on its superconduction mechanism. Polyacetylene films oriented at a high level by epitaxial polymerization were synthesized, the carrier hopping mechanism of polyacetylene was proposed, and the direction of increasing the conductivity was shown. It was discovered that cyanoacetylene is thermally polymerized at a relatively low temperature, turning into polymer with good orientation and easily into graphite. Polymeric intermediates soluble to polyparaphenylene vinylene (PPV) were synthesized, whereas these intermediates were found to have shaping and stretching properties, and conductivity of 2.8 times 10{sup 3}s/cm was obtained in PPV doped after the stretching. (NEDO)

  17. Fiscal 2000 achievement report on the development of polymeric material from renewable resource using biocatalyst; 2000 nendo seitai shokubai wo riyoshita saisei kano shigen kara no kobunshi sozai no kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    The project aims to develop a biocatalyst-assisted synthesizing method for efficiently manufacturing sugar containing polymers and polylactic acids which generate less environmental impact. The ALP-901 derived from actinomycetes operates best with 5% water content, and remains free of hydrolytic effect even when the rate rises to 20%, and catalyzes transesterification only. The esterification activity of bioprase rose remarkably upon addition of water. A polymer with a molecular weight of scores of thousands was obtained in the polymerization of sugar ester monomers. A sugar undecylenate with a double bond at an end was successfully polymerized. The sugar containing polymer exhibited excellent biodegradability. In a reaction of butanediol and lactide, several types of lactic oligomers different in molecular weight were synthesized. The oligomers were caused to react with divinylcarboxylic acid in the presence of an enzyme, and a polymerizable lactic oligomer was obtained. Furthermore, in a reaction between glucose and lactide, several lactic oligomer derivatives were synthesized, different in molecular weight. In a reaction of the derivatives and divinylcarboxylic acid with an enzyme added thereto, a polymerizable lactic oligomer derivative was obtained, which was brought into polymerization in the presence of a radical polymerization initiator for the production of a high molecular weight gel. (NEDO)

  18. Research and development of basic technologies for next generation industries, 'high crystalline polymeric material'. Evaluation on second term research and development; Jisedai sangyo kiban gijutsu kenkyu kaihatsu. Kokesshosei kobunshi zairyo (dainiki kenkyu kaihatsu kenkyu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1988-03-01

    This research and development is intended to establish a basic technology related to high crystalline polymeric material that has dynamic properties comparable to metallic materials by single polymeric material as a structural material. Thick and large high-elasticity molded forms were obtained by searching poly-arylate material, and by developing such processing technologies as high-pressure injection molding, composite injection molding, and elongation fluidity molding. High-elasticity molded forms with uniform internal orientation were obtained by heating and molding liquid crystal polymers under high magnetic field. Solution molding was performed on a molecular composite consisting of rigid chains and soft chains, which was laminated and bonded to have obtained an isotropic form with as high elasticity as 54 GPa. In addition, high pressure powder formation of cross-linked polymers of di-acetylene system provided an isotropic form with sound wave elasticity of 23 GPa.

  19. Research and development of basic technologies for next generation industries, 'electrically conductive polymeric material'. Evaluation on second term research and development; Jisedai sangyo kiban gijutsu kenkyu kaihatsu. Dodensei kobunshi zairyo (dainiki kenkyu kaihatsu hyoka)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1988-03-01

    The research and development in the second term included development of raw materials, elucidation of electricity conduction mechanism, and development of methods to improve stability and a new processing method. Crystals of a large number of charge migrating complexes were grown to elucidate their electron properties and structures. A theoretical model was structured for the superconduction mechanism in the charge migrating complexes. Poly-p-phenylene vinylene-based polymers achieved {sigma}=1.1 times 10{sup 4}s/cm as a result of extension of soluble reaction intermediates. Poly-2, 5-phenylene vinylene doped with FeCl{sub 3} retained 10{sup 3}s/m for 165 days in nitrogen. Polypyrrole achieved 3.0 times 10{sup 3}s/cm in constant potential electrolytically oxidizing polymerization and extension at low temperatures. Polypyrrole doped with ClO{sub 4}{sup -} retained electric conductivity of 85% for 400 days in nitrogen. Electric conductivity of higher than 10{sup 5}s/cm was obtained by applying different kinds of doping into thin film and fiber formed graphite. The world's highest conductivity of 9 times 10{sup 5}s/cm was achieved particularly with discharge laminated and polymerized graphite doped with AsF{sub 5}. (NEDO)

  20. Fiscal 1992 R and D project for next generation infrastructure technology. Report on results of R and D on silicon-based polymeric material; 1992 nendo keisokei kobunshi zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1993-03-01

    R and D was conducted with the purpose of establishing fundamental technologies for molecular design, synthesis, material formation and evaluation method concerning silicon-based polymer. with the fiscal 1992 results summarized. In the studies on synthesis technology of electrically conductive silicon-based polymeric materials, silicon-based compounds were synthesized including in particular -Si-Si- bond and carbon multiple bond like -C-C-, with acquisition/analysis of material data started. In the studies on new silicon-based polymeric materials capable of circuit plotting, syntheses were performed for network polysilanes through the disproportionation reaction of alkoxydisilanes. In the studies on new silicon-based polymeric materials having a light emitting function, evaluation of oxidation-reduction potential and search for synthesizing conditions were performed for halosilanes and hydrosilanes. In the studies on silicon-based photoelectric conversion materials, molecular design progressed using a crystal orbital method. Furthermore, researches were implemented on such subjects as silicon-based polymeric materials having a sea-island structure, interpenetrating polymer network forming technologies, and composite structural materials composed of organic metallic complex and silicon-based polymers. (NEDO)

  1. Research and development project in fiscal 1988 for fundamental technologies for next generation industries. Achievement report on research and development on high-efficiency polymer separating film materials; 1988 nendo kokoritsu kobunshi bunrimaku zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1989-03-01

    In order to achieve improvements in efficiency and energy conservation in the separating processes used in the chemical industries, research and development has been performed on liquid separating films, air separating films, and their related technologies. This paper summarizes the achievement in fiscal 1988. In the research of high-level molecule recognizing film in the air selecting and separating films, researches were made on the elementary technologies for the mechanism of reaction of O{sub 2} carrier with O{sub 2}, reversible reactivity of CO carrier with CO, and carrier fixation. In the research of high-density metallic complex fixing thin films, investigations were made on the oxygen affinity and temperature characteristics of active type CoVPH complex involved in carrier transportation in the polymeric complex interface film. In the research of high-function complex films, development was performed on a new carrier that can be dispersed stably and finely without making association even under high concentrations. Conditions for compounding into hollow fibers were discussed, and the film forming conditions for composite films having no pinholes were discovered. With regard to the liquid selecting and separating films, researches were made on the alcohol condensing film, water-polar organics separating fluorine-based polymer film, structural control on water selective permeation film, and water-acetic acid separating film. (NEDO)

  2. Report on the FY 1999 international research cooperation project. Development of polymer materials from renewable resources using biocatalyst; 1999 nendo seitai shokubai wo riyoshita saisei kano shigen kara no kobunshi sozai no kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    The R and D were conducted of saccharide polymer using biocatalyst and polylactic acid using biocatalyst. In the R and D of technology to synthesize polymerizing saccharide ester, the use of ALP901 led to success in acquiring hydrophobic polymerizing saccharide ester and saccharide ester with phenol residue. A study was also made of technology to synthesize polymerizing divinyl ester. In the study of the optimization of enzyme reaction conditions, the optimum temperature of ester exchange was 50 degrees C, and also under much higher temperature, 100 degrees C, the enzyme reaction was found to proceed with. In the study of the synthesis of polylactic acid, it was impossible to obtain polymer in the case of using ester lactate. However, in the case of using lactic acid, polymer was acquired at the numerical average molecular weight of approximately 1,200. In the study of the optimization of enzyme reaction conditions, polymer with high molecular weight was acquired at the enzyme amount of 5-10%. It was found out that the conversion rate exceeds 98% in the case of doing the reaction for more than 3 days at the enzyme amount of 5-10%. (NEDO)

  3. Research and development of basic technologies for next generation industries, 'electrically conductive polymeric material'. Evaluation on first term research and development; Jisedai sangyo kiban gijutsu kenkyu kaihatsu. Dodensei kobunshi zairyo (daiikki kenkyu kaihatsu hyoka)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1985-03-30

    The research and development in the first term has searched widely different kinds of raw materials, elucidated electricity conduction mechanism, discussed processing technologies and evaluation methods. It also included molecule designing to develop new raw materials. A method for growing good single crystals of charge migrating complexes was developed, and (BEDT-TTF){sub 2}I{sub 3} crystals were found to manifest superconductivity at 8K under pressure of 1.3 kbar. In addition, elucidation was made on conduction characteristics of (TMTSF){sub 2}ClO{sub 4} being an induction superconductor, and on its superconduction mechanism. Polyacetylene films oriented at a high level by epitaxial polymerization were synthesized, the carrier hopping mechanism of polyacetylene was proposed, and the direction of increasing the conductivity was shown. It was discovered that cyanoacetylene is thermally polymerized at a relatively low temperature, turning into polymer with good orientation and easily into graphite. Polymeric intermediates soluble to polyparaphenylene vinylene (PPV) were synthesized, whereas these intermediates were found to have shaping and stretching properties, and conductivity of 2.8 times 10{sup 3}s/cm was obtained in PPV doped after the stretching. (NEDO)

  4. Fiscal 1993 R and D project for industrial science and technology. Report on results of R and D on silicon-based high polymer material; 1993 nendo keisokei kobunshi zairyo no kenkyu kaihtsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-03-01

    R and D was conducted on the silicon-based high polymer that are hoped for superior electronic/optical functions and heat/flame-resistant dynamical properties, for the purpose of establishing fundamental technologies such as molecular design, synthesis, material forming and evaluation method, with the fiscal 1993 results summarized. In the synthesis of electrically conductive silicon-based polymeric materials, a concept of indirect doping was presented, revealing that workability and electrically conductive properties were enhanced by additives. In the synthesis of new silicon-based polymeric materials capable of circuit plotting, studies were made on Si-Si bond forming reaction of alkoxydisilanes as well as on the correlation between polysilane skeleton structure and its property. In the synthesis of new silicon-based polymeric materials having for example a light-emitting function, evaluation was made on synthesis and light emitting property concerning the compound that controlled the silicon skeleton structure. In addition, R and D was conducted on the precision synthesis technology of compounds, on which manifestation of photoelectric conversion function was expected. Further, research was done on unsaturated and high coordination organosilicic compound, functionality of silicon-based high polymer, and synthesis/polymerization of silicon monomer. (NEDO)

  5. Research and development of basic technologies for next-generation industry. Ultimate evaluation report on research and development of highly crystalline polymeric material; Jisedai sangyo kiban gijutsu kenkyu kaihatsu. Kokesshosei kobunshi zairyo saishu kenkyu kaihatsu hyoka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-05-01

    Basic technologies are developed involving highly crystalline polymeric materials comparable to metals in dynamic property even when used singly. The aim is to expand the application scope of polymeric materials including those designed as structural materials so that their light weight, high resistance to corrosion, and excellent machinability may be utilized in various fields. Target performance includes an elastic modulus under bending force of 100GPa or more in anisotropic materials and 50GPa or more in isotropic materials, a linear expansion coefficient of 5 times 10{sup -5}/degrees C or less, and a thermal deformation temperature of 180 degrees C or more. Tasks faced in relation to film or molded articles of anisotropic materials are the rigid molecular design, molding method including molecular orientation control, and molecular complex technology; and, in isotropic materials, the strengthening of interaction between molecules, establishment of molding methods, and equipping materials with high machinability. After a 10-year/3-phase development endeavors, the initially intended goals are sufficiently achieved. To be mentioned are achievements involving the generation of multidimensionally bound diacetylene polymeric crystals, higher elastic modulus and moldability provided to polyarylate materials, magnetic field orientation, ultrahigh-elasticity layered body, and organic-inorganic ionically bonded complex material, etc. (NEDO)

  6. Research and development of basic technologies for next-generation industry. Ultimate evaluation report on research and development of highly efficient polymeric separation membrane material; Jisedai sangyo kiban gijutsu kenkyu kaihatsu. Kokoritsu kobunshi bunrimaku zairyo saishu kenkyu kaihatsu hyoka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-05-01

    For the enhancement of separation process efficiency and energy efficiency in the chemical industry, etc., basic technologies are developed involving high-performance separation membrane materials which are excellent in durability and usable in the field where separation by membranes has been impractical. The liquid mixtures subjected to separation are a neutral organic compound/water system, an acidic organic compound/water system, and a polar organic compound/water system; the gas mixtures subjected to separation are an oxygen/nitrogen system and a carbon monoxide/nitrogen system. After a 10-year/3-phase development endeavors, the initially intended goals are sufficiently achieved. Among those that have to be mentioned is the development of a nonaqueous separation membrane, a supported liquid membrane with amino acid optically active high performance separation capability, a high-precision evaluation unit for gas separation membrane characteristics, a selective permeation membrane with high-level oxygen and carbon monoxide carriers and reactivation technology, a high-performance ethanol separation membrane, a water/polar organic compound separation membrane, and a water/acetic acid separation membrane and stability providing technology. In particular, the water selective permeation membrane for a mixture of water and alcohol has already arrived at the stage of bench plant demonstration. (NEDO)

  7. FY 1991 Report on the results of the research and development of silicon-based high-molecular-weight materials; 1991 nendo keisokei kobunshi zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1992-03-01

    The research and development project has been started to establish the basic technologies for molecular designs, synthesis, material production and evaluation of silicon-based high-molecular-weight materials expected to exhibit excellent characteristics, e.g., electro-optical functions, resistance to heat, flame retardance and mechanical properties. The efforts in FY 1991, the first year for the 10-year project, are mainly directed to the surveys on the R and D trends, both domestic and foreign, to clarify the relationship between the structures and functions/properties. The R and D projects followed include the technologies for synthesizing (1) electroconductive silicon-based high-molecular-weight materials, (2) novel silicon-based high-molecular-weight materials capable of drawing circuits, (3) novel, light-emitting silicon-based high-molecular-weight materials and (4) silicon-based opto-electric conversion materials for the electro-optical functional high-molecular-weight materials; and (1) synthesis of high-molecular-weight structural materials of sea island structure, (2) technologies for forming inter-penetrating type structures (IPN), (3) development of composite structural materials of organometallic complex and silicon-based high-molecular-weight material, and (4) development of silicon-based high-molecular-weight materials of ring structure for the high-molecular-weight structural materials. (NEDO)

  8. Research and development project in fiscal 1989 for fundamental technologies for next generation industries. Achievement report on research and development on high-efficiency polymer separating film materials; 1989 nendo kokoritsu kobunshi bunrimaku zairyo no kenkyu kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1990-03-01

    With an objective to improve efficiency and energy conservation in separation processes used in the chemical industry, researches have been performed on high-efficiency liquid separating film and air separating film materials. This paper summarizes the achievements in fiscal 1989. With regard to molecule recognizing films, researches were made on oxygen and carbon monoxide carriers, and on the elementary technology for fabricating the carrier films. In the research of metal complex fixing thin films, discussions were given on causes for deactivation in complex films. In the research of high-functional complex films, discussions were given on the structure of polymer ligand/carrier complex system solid films, and on oxygen adsorption and desorption properties. Solid film structures were selected that suit the oxygen separating films. In the research of alcohol condensation films, discussions were given on polydimethylsiloxane constituent that shows ethanol selectivity and permeability, and a multi-phase system polymeric film composed of one other constituent. In the research of water-acetic acid separating films, the basic performance of polyurea film was discussed, and evaluation was given by means of a durability test. In the research of particle separation method utilizing liquid films, a prototype continuous particle separating device was fabricated. (NEDO)

  9. Studies on the air distribution and thermal performance of the air circulation wall. Part 4. Study on the thermal emissivity of the air circulation layer`s surfaces; Gaidannetsu tsuki koho ni okeru tsuki sonai no netsu tsuki tokusei ni kansuru kenkyu. 4. Tsuki sonai hyomen no hosha tokusei ni kansuru kosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Kamimori, K; Sakai, K; Ishihara, O [Kumamoto University, Kumamoto (Japan)

    1996-10-27

    The thermal and air distribution characteristics of the air circulation wall in a heat-insulated system were grasped using an experimental model. In this paper, the difference in the heat exchange between the wall and air was confirmed based on the radiation on the circulation layer`s surface. In this system, thin air circulation layers with ventilating holes at the top and bottom are attached to the south and north outer walls of a wooden building. This system is a kind of passive solar house that achieves the insolation screening effect and the temperature rising effect based on solar collection. The heat flow in a circulation layer is eliminated by the natural convection heat transfer on the outer wall. The heat flow passing through insulating materials is the heat transfer by radiation. The heat flow based on the in-layer natural convection is increasingly eliminated by the decrease in temperature on the air circulation layer`s surface. The decrease in room surface temperature using aluminum foil and the reflective heat-insulated effect showed that the heat passing through the wall surface decreases as the convection heat transfer in an air circulation layer increases. 6 refs., 20 figs., 3 tabs.

  10. Fundamental study on hydrogen storage with hydrogen absorbing alloys. Operating characteristics of storage tank; Suiso kyuzo gokin wo mochiita suiso chozo ni kansuru kiso kenkyu. Chozo yoki no dosa tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sekiguchi, S.; Sekiguchi, N.; Tani, T. [Science University of Tokyo, Tokyo (Japan)

    1997-11-25

    Hydrogen absorption by a hydrogen storage (MH storage) is investigated for static characteristics, with a constant current applied to the hydrogen generator, and dynamic characteristics, with a fluctuating current applied to the same simulating actual insolation. In the experiment, alloy temperature (MH temperature) in the storage and a current for the generator are preset, and then automatic measurement is allowed to proceed at 10-second intervals of the differential pressure, hydrogen temperature in the piping, absolute pressure, MH temperature, room temperature, and water tank temperature. It is found as the result of the experiment that absorption performance is improved when the MH storage is cooled; that the mean absorption rate which is 1 without cooling increases to 1.62 at 7degC; that the mean absorption rate changes in proportion to the applied current (introduced hydrogen flow rate); that the rate which is 1 at 32A decreases to 0.53 that at 16A; that the absorption rate is dependent more on the current applied to the storage than the temperature of the heat exchanging medium; and that, even in the presence of fluctuation halfway in the applied current, the total absorption will be equal to a case of constant current application if the total amount of applied current is equal. 2 refs., 7 figs., 5 tabs.

  11. Output characteristic of photovoltaic module on different installing conditions. Comparison with calculated value and measured value; Secchi joken no kotonaru taiyo denchi module no shutsuryoku tokusei. Suchi kaiseki to jissokuchi tono hikaku

    Energy Technology Data Exchange (ETDEWEB)

    Sasaki, T.; Morita, Y.; Iwawaki, H.; Fujisawa, T.; Tani, T. [Science University of Tokyo, Tokyo (Japan)

    1997-11-25

    The paper studied output characteristics of photovoltaic modules different in installation conditions on the basis of the energy balance state. In the study, an energy balance equation was constructed for insolation intensity, heat losses from PV surface/back, and output, in order to calculate cell temperatures in each installation condition. A comparative study was made between calculated results and measured data obtained on the top of the school building. The results indicated the following: The thickness of thermal boundary layer became approximately 27mm at insolation intensity of 800 W/m{sup 2}, ambient air temperature of 25degC, and wind velocity of 0.5m/s. When widening air gap from 20mm to 40mm, the cell temperature decreased 4degC, and the output increased 1.6%. In the case of installing photovoltaic modules on the roof considering the relation between the air gap in the heat balance state and the thickness of thermal boundary layer, heat from PV back was released outside the air gap if widening the air gap to more than 30-40mm. The type with a heat insulating material on the panel back decreased in output from other types. 5 refs., 7 figs., 4 tabs.

  12. Effect of coal rank and mineral matter on gasification reactivity of coal char treated at high temperature; Netsushorishita sekitan char no gas ka tokusei ni taisuru tanshu oyobi kobutsushitsu no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Morishita, K.; Takei, H.; Harano, A.; Takarada, T. [Gunma University, Gunma (Japan). Faculty of Engineering

    1996-10-28

    In the wide range from brown coal to anthracite, an investigation was made of effects of heat treatment on physical/chemical properties and of coal rank dependence. For the experiment, 12 kinds of coal samples were used, and for heat treatment, the fluidized bed heated by the electric furnace and the infrared-ray gold image furnace were used. To examine characteristics of the heat-treated coal char, conducted were oxygen gasification, TPD measurement, XRD measurement, alkali metal measurement, and pore distribution measurement. The following were obtained from the experiment. The gasification reaction rate of the char heat-treated in the temperature range between 900{degree}C to 1700{degree}C decreases with a rise of the temperature of heat treatment, and the degree of decrease in the rate depends on coal rank. The order of gasification rate between coal ranks depends on the temperature of heat treatment, and the lower the heat treatment temperature is, the more largely the gasification rate is influenced by catalysis of mineral matters included in the coal. As causes of the decrease in gasification rate associated with the rise in temperature of heat treatment, indicated were release of alkali metal having catalysis and decrease of active sites by carbonaceous crystallinity. 6 figs.

  13. Characteristics of mixed culture where one type of microorganism assimilates the metabolite; Isshurui no biseibutsu ga seiseisuru taishabutsu wo betsuno shuruino biseibutsu ga shikashite zoshokusuru kongo baiyo no moderuka to tokusei kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Toyama, M.; Matsunaka, T.; Shimizu, K. [Kyushu Inst. of Tech., Fukuoka (Japan). Dept. of Biochemical Engineering and Science

    2000-11-10

    Unstructure models were developed for a mixed culture where one microorganism assimilates the metabolite produced by another microorganism The model system was a mixed culture using Lactobacillus delbrueckii and Ralstonia erthroprop where the former assimilates glucose and produces lactic acid, and the latter assimilates lactate and produce poly {beta}-hydroxy butyrate (PHB). Performance improvement is shown for the mixed culture over a single culture for chemostat using the model developed. Since the optimal dissolved oxygen (DO) concentration is different for each microorganism, we developed another model which takes into account the effect of DO concentration on the dynamic behavior. Then the optimal DO concentration is obtained for chemostat. Moreover, we developed another model which takes into account NH{sub 3} concentration on the cell grown and PHB production by R. eutropha. Then the optimal time-profile for NH{sub 3} concentration is derived using the maximum principle. It is found that high Phba production could be attained even if NH{sub 3} concentration is not controlled if initial NH{sub 3} concentration is appropriately selected. (author)

  14. Effect of Al content on critical CTOD properties in heat affected zone of C-Mn microalloyed steel. Teitanso teigokin koyosetsu netsu eikyobu no genkai CTOD tokusei ni oyobosu Al ganyuryo no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Fukada, Y.; Komizo, Y. (Sumitomo Metal Industries Ltd., Osaka (Japan))

    1992-08-05

    Two types of molten alloys specimen with a base of 0.10%C-0.20%Si-1.40%Mn-0.01%Ti system and varied Al content, were studied. The critical crack tip opening displacement(CTOD) properties in heat effected zone(HAZ) of extreme low Al content steel was stable at. extremely low temperature and there was no formation of M-A. Fine ferrite has a texture of [alpha] main body and it has been thought that the the change in the CTOD properties with the variation in Al content has been due to the difference in the texture. In case of Al content steel plate, the interfacial energy has been decreased due to excessive carbon concentration at [gamma] /[alpha] interface, M-A formation has been easier by the suppression of [alpha] transformation. In case of extremely low Al content steel plate, [alpha] transformation has been promoted and cementite deposition has been estimated from a small amount. of left [gamma] of extremely high carbon concentration. As for SH-CCT diagram of extremely low Al content steel plate, compare to Al content steel plate, [alpha] noze has shifted toward shorter time and formation of [alpha] has been easier within the normal welding cooling rate, and microstructures of [alpha] texture have formed in HAZ. 21 refs., 12 figs., 1 tab.

  15. Achievement report for fiscal 1984 on Sunshine Program. Research on liquefaction characteristics different between coal types and on technical physical properties; 1984 nendo tanshu ni yoru ekika tokusei to kogakuteki busseichi ni kansuru kenkyu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1985-03-01

    Liquefaction characteristics of coal specimens, collected from many locations across the world, are determined so as to make clear the correlations between coal type and liquefaction reactivity. Conducted for this purpose are the analysis of chemical structures of the specimens, liquefaction tests in an autoclave using various catalysts and medium oils, liquefaction tests in a 0.1t/d bench plant, investigation of the constituents of the generated oil and their separation, and the secondary stabilization treatment for the commercialization of the product. The reaction tower is kept under constant conditions, the state of the liquid mixture in the reaction tower is evaluated by tracking the flow of coal out of the reaction tower after switchover from anthracene oil to coal paste, the gas flow in the reaction tower is estimated by tracking time-wise changes in the concentration level of inert gas at the reaction tower outlet port, the inert gas having been injected in pulses into the reaction system operating under the reaction conditions. For the implementation of the above-mentioned steps, a system is designed and constructed for directly collecting samples from the vapor phase section in the reaction tower operating under given reaction conditions (temperature: 400-450 degrees C, pressure 150-300kg/cm{sup 2}), and experiments are conducted to collect gas/liquid equilibrium data in the reaction tower under the given reaction conditions. (NEDO)

  16. Humidity-sensitive characteristics of PbCrO4-PbO thick film elements. PbCrO4-PbO kei atsumaku soshi no kanshitsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Kaneko, F [Shonan Institute of Technology, Kanagawa (Japan); Nanba, N [Kantogakuin University, Tokyo (Japan)

    1992-12-20

    This paper describes humidity-sensitive characteristics, which depend on the host composition being PbCrO4 or Pb2CrO5, in the system PbCrO4 combined with various oxides, such as Al2O3, Fe2O3, ZrO2, SnO2, TiO2, ThO2, and Ta2O5. In order to confirm the predominant phase over elements in the system PbCrO4-PbO, the effect of composition and microstructure on the humidity-sensitive characteristics of thick film elements were examined. Consequently, it was found that the humidity-sensitivity in low humidity region increased as the host composition of elements changed from hydrophobic PbCrO4 to hydrophilic Pb2CrO5. It was also shown that these results can be interpreted by a humidity-sensitive mechanism proposed for hydrophilic Pb2CrO5. Furthermore, an absorption model of H2O molecules on to the surface of Pb2CrO5 in the PbCrO4-PbO system humidity sensor was provided. 4 refs., 12 figs.

  17. Characteristics of a Ti:sapphire laser pumped by a Nd:YAG laser and its analysis. Nd:YAG laser reiki Ti:sapphire laser no dosa tokusei to sono kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Okada, T.; Masumoto, J.; Mizunami, T.; Maeda, M.; Muraoka, K. (Kyushu Univ., Fukuoka (Japan). Faculty of Engineering)

    1991-06-29

    Although Ti: Sapphire expects of a possibility of being a light source much superior to a dye laser having been used as a wavelength variable laser for spectral analyses, it has a limitation that it does not oscillate directly in the visible and ultraviolet regions. In order to develop a light source that is synchronizable over ultraviolet-near infrared regions, by means of combining a Ti: Sapphire laser of a high peak power, comprising an oscillator and a multistage amplifier, with a non-linear frequency conversion method for harmonic generation and Raman conversion, a prototype Ti:Sapphire laser that is excited by YAG laser second harmonic, and that synchronizes with a prism was fabricated, and its operational characteristics were investigated. As a result, an output energy of 35.6 mJ at a maximum was obtained at a wavelength of 773 nm against an excitation energy of 129 mJ, a conversion efficiency of 38.2% was obtained against the absorption energy of the crystals, and a continuous synchronism was achieved over 750 to 900 nm. 4 refs., 9 figs., 1 tab.

  18. Non-contact evaluation of mechanical properties of electroplated wear resistant Ni-P layer from the velocity dispersion of laser SAW; Laser reiki Rayleigh ha no sokudo bunsan wo mochiita taimamo Ni-P mekkiso tokusei no hisesshoku hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Morikawa, Y.; Cho, H.; Takemoto, M. [Aoyama Gakuin University, Tokyo (Japan). Faculty of Science and Engineering; Nakayama, T. [Kobe Steel Ltd., Kobe (Japan)

    1996-11-01

    We developed a new laser surface acoustic wave (SAW) system and applied this to estimate the mechanical properties of the wear-resistant Ni-P layer electroplated on a stainless steel. The velocity dispersions of Rayleigh wave of the as -plated and heat-treated Ni-P layer were obtained by the one point time domain signal processing. The Ni-P layers with excellent wear resistance produced by the heated treatment higher than 725K were found to show higher Rayleigh velocities than that of the substrate steel, while the Ni-P layer with poor wear resistance showed lower velocities. Young`s moduli of the Ni-P layer, estimated so as the computed velocity dispersion agreed with the measured one, increased with the increase of wear resistance. 10 refs., 9 figs., 2 tabs.

  19. Acoustic excitation of diffusion flames with coherent structure in a plane shear layer.; Effects of acoustic excitation on combustion properties; Soshiki kozo wo tomonau sendan kakusan kaen no onkyo reiki.; Onkyo reiki ni yoru nensho tokusei no henka

    Energy Technology Data Exchange (ETDEWEB)

    Ishino, Y.; Kojima, T.; Oiwa, N.; Yamaguchi, S. [Nagoya Institute of Technology, Nagoya (Japan)

    1993-10-25

    This paper reports on experiments for acoustic excitation of plane shear structured flame. Flows of air separated into the higher velocity side and the lower velocity side by a partition on the center of a flow path merge at the measuring point to form a mixed layer with coherent structure. Fuel is supplied to this mixed layer with the flows so adjusted that the generated flame will attach to the partition on the lower velocity side. Acoustic excitation (at a sound pressure level of 100 dB to 120 dB) is performed in a speaker fitted on a wall on the higher velocity side. The paper mentions the results of the experiments as follows: the acoustic excitation produces such changes to diffusion flame in the plane shear layer as shorter flame and blue flame combustion and clarification of flame structures; as seen from spectral characteristics of temperature change in the flames, a flame acoustically excited strongly presents remarkable improvements in periodicity of the structure; as seen from sound pressure distribution in the flow direction at the measuring point, the flame zone of the flame acoustically excited strongly is positioned at the middle of the node and loop of a standing wave. 6 refs., 9 figs., 1 tab.

  20. Relation between front suspension layout and handling performance. Analysis depending on the Taguchi method and ADAMS; Front suspension layout to soda tokusei no kankei ni tsuite. Kiko kaiseki gengo wo mochiita hinshitsu kogaku ni yoru kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Okada, K [Daihatsu Motor Co. Ltd., Osaka (Japan)

    1997-10-01

    A variation of suspension layout gives an influence to the vehicle dynamics. Examined the suspension layout variation to make the handling performance change small. Analyzed the effect of suspension layout variation about steering response delay and gain besides the tire wear effect and movable load. 3 refs., 12 figs., 4 tabs.

  1. FY 1974 Report on results of Sunshine Project. Study on physicochemical properties of rocks in geothermal districts; 1974 nendo chinetsu chitai ni okeru ganseki no butsuri kagakuteki tokusei ni kansuru kenkyu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1975-03-01

    The geothermal district is characterized by distributions of high temperature and hot water. The beds and rocks in these areas are characteristically altered by these conditions. It is an object of this research and development project to clarify how properties of the beds and rocks in these areas, exposed to the characteristic physicochemical conditions, differ from properties of those in other areas. There are may rock properties. In this project, the studied properties are centered by those used for physical exploitation (or geophysical methods), e.g., electrical properties (electrical exploitation), magnetic properties (magnetic exploitation), and thermal conductivity (measurement of heat flow rates and geothermal gradients). The FY 1974 project covers pigeonholing the basic data, establishment of the experimental procedures, and measurement of water quality characteristics and temperature distributions (geothermal temperature gradients) at the test site. This paper reports the results categorized by (I) measurement of rock resistivity and effects on moisture content on this property, (II) properties of water in the geothermal district (Yahata-daira District), and (III) relationships between rock thermal conductivity and other properties. (NEDO)

  2. Studies on the hydroprocessing of deashed oil. 10. ; Comparison of the reaction performance between pilot plant and BSU. Deashed oil no suisoka bunkai hanno ni kansuru kenkyu. 10. ; Pilot to bench hanno sochi no hanno tokusei no hikaku

    Energy Technology Data Exchange (ETDEWEB)

    Hijiriyama, M.; Kaneko, T. (Mitsubishi Kasei Co., Tokyo (Japan)); Kageyama, Y. (Nippon Brown Coal Liquefaction Co. Ltd., Tokyo (Japan))

    1990-11-29

    The secondary hydroprocessing process in the two-stage hydrogenating liquefaction equipment under development at Nippon Brown Coal Liquefaction Company uses a fixed bed system. This paper describes operation of a bench reaction equipment using catalyst used in the pilot plant to compare it with fresh catalyst, and compare characteristics of the bench scale equipment with those of the pilot reactor. The catalyst is Ca-Ni-No/Al2O. The reaction was carried out in a gas-liquid downward parallel-flow fixed-bed reactor using deashed oil (DAO) with the same material as that used in the pilot plant and the same equilibrium solvent. The experiment result indicates that the used catalyst had its activity fallen below the fresh catalyst, but its temperature dependence was identical, and the selectivity on products of both catalysts was also identical. The result of reactions in the bench scale equipment clarified that the relationship between the DAO conversion rate and denitrogenation activity and the relationship between fa and H/C in the products are in good agreement, and that there is no difference in reaction selectivity. 5 refs., 6 figs., 1 tab.

  3. Research and development of photovoltaic power system. Study of carrier dynamics in a-Si from optical and optoelectronic properties; Taiyoko hatsuden system no kenky kaihatsu. Amorphous silicon no koden tokusei to sono carrier dynamics no kogakuteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Hamakawa, K [Osaka University, Osaka (Japan). Faculty of Engineering Science

    1994-12-01

    This paper reports the result obtained during fiscal 1994 on research on an optical study of optoelectronic properties of amorphous silicon and its carrier dynamics. Studies have been performed on elucidation of the optoelectronic conversion mechanism in an a-Si film p-i-n junction system and the relationship of the mechanism with the optoelectronic properties. In the studies, optically induced defect level distribution was evaluated by using the modulated optical current spectroscopy, and confirmation was made on model forecast and qualitative agreement, such as large increase in neutral defect levels in association with beam irradiation. In research on elucidation of a film forming mechanism for a-Si based alloys, and material property control, a high-sensitivity reflective infrared spectroscopy was used to observe mechanisms such as treatments and processes given in device fabrication. In research on optical and optoelectronic properties of an s-Si alloy thin film by using the modulated spectroscopy, a new evaluation technology dealing with amorphous semiconductors was developed. The technology separately evaluates carrier migration factors of electrons and holes by combining polarization angle dependence of electro-absorption signals with hole migration measurements. 4 figs.

  4. Effects of short fiber reinforcement and mean stress on tensile fatigue strength characteristics of polyethersulfone; Tansen`i kyoka porieterusaruhon no hippari hiro tokusei ni oyobosu heikin oryoku no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Furue, H.; Nonaka, K. [Mechanical Engineering Lab., Tsukuba, Ibaraki (Japan)

    1996-01-15

    Thermoplastics are often reinforced with short fibers with aims of improvement of their strengths, rigidities and hardness or maintenance of their dimensional stabilities. Such short fiber reinforced plastic materials have more expectation for high performance plastics. Authors already examined of some effects of reinforced fiber and of orientation in injection molding on flexural fatigue characteristics of the injection-molded high performance thermoplastic materials. However, the examination of short fiber reinforced effects on fatigue strength characteristics was not always sufficient. In this study, in order to obtain a guiding principle for fatigue resistant design of the short fiber reinforced injection molding materials, polyethersulfones (PES) was examined on its tensile fatigue strength and an effect of short fiber reinforcement for improvement of its fundamental dynamic properties on its fatigue characteristics. Especially, its fatigue life characteristics was elucidated mainly on relationship of mean stress, stress amplitude and number of repeating fracture in tensile fatigue behavior. 10 refs., 15 figs., 2 tabs.

  5. Report on the Sunshine Project in fiscal 1990. Studies on liquefaction characteristics by coal types and on engineering properties; 1990 nendo tanshu ni yoru ekika tokusei to kogakuteki busseichi ni kansuru kenkyu hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1990-07-01

    This paper describes the achievements at the Government Industrial Development Laboratory, Hokkaido in the Sunshine Project in fiscal 1990. Surveys were carried on different catalytic activities for co-liquefaction of various types of coals. The Ru system was found preferable in acquiring fatty family products of low boiling points. Reactions of co-liquefaction constituents do not progress independently, but have positive interaction. Adding Ru is effective in accelerating hydrogenation of condensed aromatic rings and hydrogenation of cleaving nucleus, but in view of the hydrogenating decomposition capability, the Mo-system may be better. In a liquefaction plant test, diesel oil was manufactured by reforming and improving the Yallourn coal light oil. However, the oxygen content was too high, aggravating the temperature distribution control in catalyst bed, and not having achieved the intended denitrification rate. Discussions were given on co-liquefaction of the depressurization residues of Cold Lake (CLVB[vacuum bottom])/Athabasca (ATVB) and Battle River coal. The CLCVB and ATVB were turned into lower molecules easily through hydrogenation treatment. The reaction characteristics reflected the characteristics of medium oil. Depolymerization of coal has progressed faster in ATVB. In the study on the engineering property values, discussions were given on behavior of solid particles in a bubble column, and gas hold-up of slurry. (NEDO)

  6. Measurement method of moving vehicle in the magnetic levitation and propulsion system using high-Tc superconducting bulks; Koon chodendo barukutai wo riyoshita fujo suishin shisutemu no suishin tokusei keisoku shuho

    Energy Technology Data Exchange (ETDEWEB)

    Fuwa, Y.; Mizuma, T.

    1999-06-07

    The transportation system using simple magnetic levitation system got in the combination of high-temperature superconductivity bulk body and permanent magnet, which caught a quantum magnetic flux, is devised in great numbers, and the model equipment has also been manufactured. In the meantime, a grasp of levitation and guide characteristics is necessary for the case in which this levitation system is applied to the simple individual transportation system, and the measurement of the levitation characteristics is indispensable for the reason. In the conventional research, the measurement of the levitation characteristics has not been very much made. There was due to be no technique which measured kinetic characteristics of noncontacting surfacing and running travel body. In this study, measuring method for measuring these levitation characteristics was devised, and it was applied to actual measurement by the production of the model test equipment. Through this measurement, the purpose of this study is to show with that it is applicable for the real test equipment as this measuring method judges possibility of application to simple transportation system. (NEDO)

  7. Investigation on the dynamic response and strength of very long floating structures by beam modeling on an elastic foundation; Dansei shishojo no hari model ni yoru chodai futai kozo no doteki tawami kyodo tokusei ni kansuru kosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Tsubogo, T.; Okada, H. [University of Osaka Prefecture, Osaka (Japan). Faculty of Engineering

    1997-08-01

    A very large floating structure was replaced with the beam on an elastic foundation to examine the response characteristics in waves. Another evidence was regularly and numerically given for the basic characteristics of a very large floating body Suzuki found. New information was also obtained. The frequency response is mainly classified into a wave number control area and proper frequency control area when buoyancy elasticity exists. When the buoyancy structure is long and flexible, the proper frequency becomes continuous and the frequency control area becomes a resonance area. In the wave number control area, the Suzuki`s characteristic wave number becomes a control parameter, and various characteristic values are indicated by characteristic wave numbers. The response in the wave number control area becomes quasi-static when the distribution mass of buoyancy is fully small. The design in which the distribution mass of buoyancy is fully large must be avoided. In the displacement amplitude, the mass on the free end is severest. The proper frequency of vertical vibration relatively moves to the high-frequency side when buoyancy is considered as an elastic foundation. Attention must be thus paid to the proper frequency of vibration on the horizontal surface. 9 refs., 12 figs., 3 tabs.

  8. Analysis of transient thermal behaviors during the charging process in stratified heat storage tanks. 2nd Report. Effects of characteristic parameters; Seiso chikunetsu sonai deno juten katei no kato netsuteki kyodo ni kansuru kaiseki. 2. Tokusei inshi no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, H; Hong, H; Pak, E

    1997-11-25

    The mixing effect deteriorates performance in a stratified heat storage tank. In the present study, the effect of characteristic factors during the charging process was analyzed, based on the analytical solution in the previous study in which a strict boundary condition was applied and a mixing effect was included. Also, the usefulness of the solution was verified and the method of application to a real system was examined by comparing it to other experimental results. It was concluded that the depth of the perfectly mixed region is dominant unless the Peclet number is very small. 10 refs., 8 figs.

  9. 3Wave propagation in rock samples under medium and low temperature conditions. Characteristics of methane hydrate-BSR phenomena; Chu teion ryoiki ni okeru ganseki shiryo no hado denpa tokusei. 1. Methane hydrate BSR gensho no kosatsu suitei

    Energy Technology Data Exchange (ETDEWEB)

    Rokugawa, S; Kato, Y; Matsushima, J; Sano, A [The University of Tokyo, Tokyo (Japan). Faculty of Engineering

    1997-10-22

    In relation to sea-bottom pseudo reflection face and methane hydrate in seismic exploration records, fundamental experimental studies have been made. In order to get a handhold to elucidate phenomena accompanying methane hydrate, the studies have investigated wave propagation behavior of rock samples and sandy sediments under medium and low temperature conditions. The experiments have used a constant-temperature cooling water circulating equipment to control temperatures of each sample. The samples were placed in a cooler box with the vibration transmitter and receiver fixedly installed, and changes of the waves against temperature change were measured. Sand-stones and two kinds of tuffs were used as rock samples for the measurement. Artificial sand sample soaked in water was used as a substitute for a methane hydrate layer. As a result of the experiments, the relation between the hydrate layer and the gas layer was comprehended. In addition, the blanking phenomenon was thought occurring as a result of the nearly whole substance presenting the speed of ice due to freezing of the sediments, rather than by what is described in the ground homogeneousness theory. 5 refs., 9 figs.

  10. Formation of porous carbon materials from phenol-formaldehyde resin and their adsorption characteristics; Fenoru/horumu arudehido jushi kara erareta takosei tanso zairyo no kogeki kozo to sono kyuchaku tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Oda, H.; Tojo, R.; Nomura, A. [Kansai Univ., Osaka (Japan). Faculty of Engineering

    1997-05-15

    In this study, preparation of porous adsorbent with developed micro-pores and meso pores and open pores on the external surface is tried. Namely, PFR-sawdust activated carbon is produced by carbonizing the PFR-sawdust composite materials obtained by adding KOH-immersed wood powders in the preparation of phenol-formaldehyde resin(PFR). Additionally, as a comparative test, KOH is added directly into PFR and PFR-KOH activated carbon is prepared by carbonization. Simultaneously with the clarification of the difference of pore structure between said two kinds of activated carbons, a various kinds of adsorbing tests are carried out to evaluate the adsorbing effects thereof. PFR-KOH activated carbon having a high specific surface area of 3500 m{sup 2}/g and a large number of micro-pore and meso pores is extremely effective in absorption of gas phase while the yield and particle strength are low. PFR-sawdust has a specific surface area of 1500 m{sup 2}/g which is the same level of activated carbons on the market, but the yield thereof is twice as that of PFR-KOH. 9 refs., 5 figs., 3 tabs.

  11. Estimation of site effects in Higashinada Ward, Kobe City using aftershock records of the 1995 Hyogo-Ken Nanbu Earthquake; Hyogoken nanbu jishin no yoshin kiroku wo mochiita Kobeshihigashinadaku no jiban zofuku tokusei no hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Kurita, K.; Yamanaka, H.; Seo, K. [Tokyo Inst. of Tech. (Japan)

    1998-07-30

    Source spectra and site effects are separated using the aftershock records, and the characteristics of short period earthquake motion in Higashinada Ward, Kobe City including the area to the south of seismic intensity 7 area are investigated placing emphasis on how far the site effects can be explained by 1-D ground structure. The shape and amplitude of the site effect of KNN and KYC located outside the seismic intensity 7 area can be explained fairly well by 1-D multiple reflection theory of S wave. However, peaks near 3 to 4Hz of KNN and UOZ in seismic intensity 7 area can not be explained. This suggests that the site effects of seismic intensity 7 area obtained by the aftershock records might include 2-D effects of underground structure. Inversion is performed using site effects as the objective functions to determine S wave velocity structure and Qs in the sedimentary layer. S wave velocity structure shows no systematical difference from those of the past models. 22 refs., 13 figs., 2 tabs.

  12. Effect of intermolecular cohesion on coal liquefaction. 3. Reactivity of oxygen methylated coal; Sekitan teibunshika hanno ni okeru bunshikan gyoshuryoku no koka. 3. O-methyl ka tan no hanno tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Sasaki, M.; Nagaishi, H.; Yoshida, T. [Hokkaido National Industrial Research Institute, Sapporo (Japan)

    1996-10-28

    The reactivity of oxygen methylated coal was studied to control hydrogen bond in bituminous coal liquefaction and intermolecular cohesion such as van der Waals force. In experiment, crushed and dried Illinois coal of 100mesh or less was used as specimen, and oxygen methylated coal was prepared by Liotta`s method using tetrabutylammonium halide. Coal liquefaction was conducted in an electromagnetic agitation autoclave using tetralin solvent under initial hydrogen pressure of 100kg/cm{sup 2} while heating. The molecular weight distribution of the products obtained was measured by gel permeation chromatography (GPC) analysis. The experimental results are as follows. The effect of intermolecular cohesion in bituminous coal on the reactivity is mainly derived from decomposing reaction from preasphaltene to oil. Yields of oil fraction by methylation increase corresponding to release of intermolecular cohesion. Since the thermal release is promoted with temperature rise, the difference in yield due to different treatments decreases. 5 refs., 3 figs., 1 tab.

  13. Analysis of the relationship between the coal properties and their liquefaction characteristics by using the coal data base; Tanshu data base ni yoru tanshitsu to ekika tokusei no kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Kanbayashi, Y.; Okada, K. [Coal Mining Research Center, Tokyo (Japan)

    1996-10-28

    The relationship between coal properties and liquefaction or gasification characteristics was analyzed by using the analysis and test results and liquefaction characteristics in the coal data base. On liquefaction reaction, the close relation between an oil yield and coal constituent composition or a coal rank is well-known. Various multivariable regression analyses were conducted by using 6 factors as variables such as calorific value, volatile component, O/C and H/C atomic ratios, exinite+vitrinite content and vitrinite reflectance, and liquefaction characteristics as variate. On liquefaction characteristics, the oil yield of dehydrated and deashed coals, asphaltene yield, hydrogen consumption, produced water and gas quantities, and oil+asphaltene yield were predicted. The theoretical gasification efficiency of each specimen was calculated to evaluate the liquefaction reaction obtained. As a result, the oil yield increased with H/C atomic ratio, while the theoretical gasification efficiency increased with O/C atomic ratio. 5 figs., 1 tab.

  14. Three-dimensional analysis of internal flow characteristics in the injection nozzle tip of direct-injection diesel engines; Sanjigen suchi kaiseki ni yoru DI diesel kikan no nenryo funsha nozzle nai ryudo tokusei no kaimei

    Energy Technology Data Exchange (ETDEWEB)

    Ogawa, H; Matsui, Y; Kimura, S [Nissan Motor Co. Ltd. Tokyo (Japan)

    1997-10-01

    To reduce the exhaust emissions and fuel consumption of direct-injection diesel engines, it is essential to optimize the fuel injection equipment closely related to combustion and emission characteristics. In this study, three-dimensional computation has been applied to investigate the effects of the injection nozzle specifications (e.g., sac volume, round shape at the inlet of the nozzle hole) and needle tip deviation on internal flow characteristics. The computational results revealed that the effects of the nozzle specifications and needle tip deviation with a smaller needle lift on internal flow characteristics and a general approach to optimize the injection nozzle specifications were obtained. 3 refs., 10 figs., 1 tab.

  15. Reduction of belt CVT gear noise by gear train modification. Optimize vibration characteristics of gear train; Belt CVT no gear noise teigen gijutsu. Gear train shindo tokusei no saitekika

    Energy Technology Data Exchange (ETDEWEB)

    Arimatsu, M; Kawakami, T [Nissan Motor Co. Ltd., Tokyo (Japan)

    1997-10-01

    With the reduction of vehicle noise, the requirements for an efficient method to reduce transmission gear noise have become stronger yearly. So far efforts to reduce gear noise have generally focused on ways of improving the gears themselves. In addition to these traditional methods, it proved very beneficial to us to optimize the gear train structure. Nissan has just released the new Belt CVT for 2.0L Front wheel drive vehicles. We have been analyzing vibration of the gear train by using a finite element model since the early development stage, and we could achieve the quiet gears effectively. 2 refs., 9 figs.

  16. Spray characteristics of dimethyl ether (D.M.E.) as on alternative fuel for diesel engine; Daitai diesel nenryo to shite no dimethyl ether (D.M.E.) no funmu tokusei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Wakai, K; Nishida, K; Yoshizaki, T; Hiroyasu, H [Hiroshima University, Hiroshima (Japan)

    1997-10-01

    D.M.E. which was paid attention to as on alternative fuel for a diesel engine, was injected by using Bosch type injection pump and a hole nozzle into a high pressure and high temperature vessel. The spray was observed by using schlieren photography. Spray characteristics, such as, the tip penetration, the cone angle and the volume of the spray were and were compared with a diesel fuel spray. The following thing, and so on were found out as a results. The spray angle of the DME spray of atmosphere pressure Pa=0.1Mpa spreads out large in comparison with the diesel fuel spray, and the way of the change by the pressure is contrary to the case of the diesel fuel spray. 3 refs., 6 figs., 1 tab.

  17. Injection and spray characteristics of a variable orifice nozzle applied the jerk type fuel injection pump for DI diesel engine; Jerk shiki nenryo funsha pump wo mochiita kahen funko nozzle no funsha funmu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Hasegawa, T; Matsui, K; Iwasaki, T; Kobayashi, T [Zexel Corp., Tokyo (Japan); Matsumoto, Y [The University of Tokyo, Tokyo (Japan)

    1997-10-01

    A Variable Orifice Nozzle (VON) by changing a cross-sectional area of the nozzle injection hole, for improving a rate of injection and injection duration, has been developed to study its injection and spray characteristics. The nozzle geometry was optimized to analyze a nozzle internal flow by computational method. Results show that, injection and spray pattern responded to the nozzle orifice cross-sectional area which is changing larger to smaller in the part load range. This results suggest to contribute a combustion improvement which decreasing NOx and soot. 14 refs., 10 figs.

  18. Study of an optimization of regeneration for an absorbent used in the solar desiccant cooling system; Taiyonetsu riyo desiccant reibo ni mochiirareru kyushuzai saisei tokusei no saitekika ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Saito, Y [Osaka Institute of Technology, Osaka (Japan)

    1997-11-25

    A desiccant cooling system uses concentrated aqueous solution of an absorbent to reduce humidity, hence the resultant absorbent solution becomes dilute. Regeneration of the dilute solution uses solar heat, where the regeneration characteristics are affected by solution temperature, vapor pressure, water content, air-liquid flow rate, and other factors. Therefore, mutual relationship among these different factors were investigated, and an optimum operating condition was discussed. The regeneration characteristics of the absorbent is strongly affected by temperature of triethylene glycol (TEG). This is because vapor pressure, Ps, in the TEG aqueous solution increases as the TEG temperature rises. This means that preheating the solution is effective in regenerating the absorbent. As the regeneration progresses, the water content, Ww, decreases, and the regeneration rate decreases. This is because of reduction in the Ps in association with decrease in the Ww of the TEG. This suggests that it is important in the absorbent regeneration to reduce flow rate of the TEG aqueous solution as low as possible. Raised air temperature reduces difference in vapor partial pressure between the TEG and the air, resulting in reduced regeneration rate. 5 refs., 9 figs.

  19. Thermal infrared spectra of surface rocks. Comparison of in the laboratory, in situ, and remote sensing data; Chihyo ganseki no netsusekigaiiki bunko tokusei. Chijo sokutei data to remote sensing data no hikaku

    Energy Technology Data Exchange (ETDEWEB)

    Ninomiya, Y; Matsunaga, T [Geological Survey of Japan, Tsukuba (Japan)

    1996-10-01

    An ASTER (advanced spaceborne thermal emission and reflection radiometer) is one of the image sensors. It is to be installed in an earth survey polar orbit platform satellite, EOS-AM1, which is to be launched in 1998, and it is going to start its operation. Data observed by the thermal infrared remote sensing of ASTER include the spectral emissivity, and the spectral emission reflectivity which is expressed by the function of temperature. It is required to overcome technical problems how to extract the spectral emissivity from the observed data. The spectral emissivity extracted from the remote sensing data by the MMD method, measured for samples collected in Cuprite area, Nevada, and/or measured at sampled points were compared to each other and discussed. The hemisphere spectral reflectivity, which is indirect spectral emissivity, agreed well with the direct spectral emissivity. Data suggesting the establishment of Kirchhoff`s law were obtained even for the weathered samples. The spectral emissivity derived from the remote sensing data by the MMD method was in harmony with the spectral characteristics measured strictly on the ground. 14 refs., 3 figs.

  20. Study on characteristics of response to nodal vibration in a main hull of a large-size ferry boat; Ogata feri no shusentai yodo oto tokusei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Takimoto, T; Yamamoto, A; Kasuda, T; Yanagi, K [Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)

    1996-04-10

    Demand for reduction in vibration and noise in large-size ferry boats has been severer in recent years. On the other hand, vibration exciting force in main engines and propellers is on an increasing trend in association with increase in speed and horsepower. A large-size ferry boat uses an intermediate-speed diesel engine which has high vibration exciting frequency. Therefore, discussions were given on characteristics of response to nodal vibration in a main hull induced by primary internal moment in a main engine in a large-size ferry boat mounting an intermediate speed main engine. Results of detailed vibration calculations, vibration experiments using an actual ship, and results of measurements were used for the discussions. Natural frequency for two-node vibration above and below the main hull was set for an equation of estimation such that the whole ship is hypothesized to have been structured with beams having the same cross section according to the Todd`s equation, and effect of rigidity of the long structure can be evaluated. Parameters were derived by using the minimum square method that uses the measured natural frequency of the ship A through the ship E among large-size ferry boats. The derived result may be summarized as follows: this equation of estimation has an estimation error of about 5% against the natural frequency for nodal vibration above and below the main hull; and this equation of estimation has an estimation error of about 30% against the acceleration in the vertical direction at the end of the stern. 2 refs., 11 figs., 1 tab.

  1. Aliasing characteristics of tau-P transform and is application to signal and noise separation; Tau-P henkan no aliasing tokusei to hakei iji wo koryoshita S/N bunri

    Energy Technology Data Exchange (ETDEWEB)

    Kawabuchi, H; Rokugawa, S; Matsushima, J; Ichie, Y [The University of Tokyo, Tokyo (Japan); Minegishi, M; Tsuburaya, Y [Japan National Oil Corp., Tokyo (Japan). Technology Research Center

    1997-05-27

    With respect to the tau-P transform method as a signal and noise (S/N) separation technology used in seismic exploration using the reflection method, a discussion has been given on conditions for the post S/N separation by the tau-P transform to function more effectively. Averaging the energy in performing the tau-P transform makes the wave energy scatter to a certain range. As a result, an aliasing phenomenon appears, in which noise is superimposed on the post-processing record. As a result of the discussion, it was verified that satisfying the two equations of G. Turner is effective in order to reduce the aliasing and maintain the relative amplitude. However, in actual calculation accuracy, waveform change was recognized to some extent, particularly amplification of events in low frequencies, and low restorability in higher frequencies. It was also observed that a method to give the tau-P region a two-dimensional Fourier transform and perform the same processing as an f-k filter can remove aliasing more simply and effectively than the HVF, and improve the S/N ratio maintaining the amplitude at the current level. 5 refs., 13 figs.

  2. Model experiment on change of seismic properties of a fracture caused by injecting/draining water; Chusui/haisui ni yoru kison kiretsu no dansei denpa tokusei no henka ni kansuru model jikken

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, T; Koizumi, T; Sassa, K [Kyoto University, Kyoto (Japan). Faculty of Engineering

    1997-05-27

    Effect of water injection/draining on elastic waves penetrating through cracks is examined by measuring elastic waves before, during, and after the injection/draining of water into/from cracks in presence in granite. Two blocks of rock, with their crack-containing surfaces in contact with each other, are placed in a vessel, and water injection/draining is done through a hole on a vessel bottom side so that water will penetrate into the cracks. When the blocks are dry, there is almost no contact between the cracks, and so no crack penetrating waves are observed. Crack penetrating waves are produced when water is injected, and the position of the receiver sensing the penetrating waves changes as the water level rises. When the water level is lowered from the high water level, the waveform changes again as the level changes. The change in waveform is not so remarkable, however, as that observed during water injection thanks to the water residual in the cracks. It is now inferred that crack investigation is more effective when it is carried out with water being injected into dry cracks. The difference produced between the dry state and wet state when water is injected into dry cracks is used to detect the presence of cracks in this experiment, and this may be applied also to the investigation of cracks in the shallow part of the ground. 4 refs., 11 figs.

  3. Study on the characteristics of earthquake ground motion in the Hanshin area based on microtremor measurements; Bido kansoku ni motozuku Hanshin chiiki no jiban shindo tokusei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, H; Seo, K; Yamanaka, H [Tokyo Institute of Technology, Tokyo (Japan)

    1997-05-27

    The Hyogoken-nanbu earthquake in 1995 was a local earthquake that has hit directly a large urban area, having caused damages the greatest since the War mainly in the city of Kobe. The present study has noticed the areas of Sumiyoshi, Nada Ward, Kobe City and Nanbu, Nishinomiya City where damages show different distribution; elucidated the characteristics of earthquake ground motion based on microtremor measurements; and discussed the relation thereof with the earthquake damage distribution. It was verified that microtremors and seismic motions are in rough agreement in the Sumiyoshi area, by comparing and discussing the spectrum ratio between the microtremors and the seismic motions. No correspondence was recognized in the Sumiyoshi area between distribution of the average microtremor spectrum ratio with cycles of 0.2 to 0.8 second and distribution of damages caused by the Hyogoken-nanbu earthquake. The ground characteristics evaluation alone is insufficient to explain distribution of the damages in a relatively wide range in the city of Nishinomiya, for which effects of distance decay should be taken into consideration. 6 refs., 7 figs.

  4. Heat and fluid flow properties of circular impinging jet with a low nozzle to plate spacing. Improvement by nothched nozzle; Nozzle heibankan kyori ga chiisai baai no enkei shototsu funryu no ryudo dennetsu tokusei. Kirikaki nozzle ni yoru kaizen kojo

    Energy Technology Data Exchange (ETDEWEB)

    Shakouchih, T. [Mie University, Mie (Japan). Faculty of Engineering; Matsumoto, A.; Watanabe, A.

    2000-10-25

    It is well known that as decreasing the nozzle to plate spacing considerably the heat transfer coefficient of circular impinging jet, which impinges to the plate normally, increases remarkably. At that time, the flow resistance of nozzle-plate system also increases rapidly. In this study, in order to reduce the flow resistance and to enhance the heat transfer coefficient of the circular impinging jet with a considerably low nozzle to plate spacing, a special nozzle with notches is proposed, and considerable improvement of the flow and heat transfer properties are shown. The mechanism of enhancement of the heat transfer properties is also discussed. (author)

  5. Improvement of low temperature oxidation resistance in MoSi{sub 2}-oxides composites; Sankabutsu no fukugoka ni yoru MoSi{sub 2} zairyo no teion sanka tokusei no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Jiang, W.; Uchiyama, T. [Riken Corp., Saitama (Japan)

    1999-11-15

    MoSi{sub 2}-oxides composites using fine aluminosilicate powder (< 0.2{mu}m) have demonstrated excellent low temperature oxidation resistance and thermal shock resistance. These properties strongly depend on microstructural morphology and are obtained in composites that network-structures of both phases of MoSi{sub 2} and oxides are developed, i.e., in composites with oxides of 20 {approx} 40 vol. %. When one phase is independently dispersed in the other phase, on the other hand, problems of low temperature oxidation and thermal shock occur. The low temperature oxidation problem occurs in the composites with oxides less than 15 vol. % and the thermal shock problem occurs in the composites with oxides more than 50 vol. %. These results will contribute to material design approaches for high temperature structural applications of MoSi{sub 2}. (author)

  6. Improvements of room temperature tensile properties in cast TiAl-Fe-V-B alloy by microstructural control; Fe, V, B tenka TiAl gokin no soshiki seigyo ni yoru joon hippari tokusei no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Nishikiori, S.; Matsuda, K. [Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan)

    1998-05-01

    Conditions of homogenization to follow the HIP (hot isostatic press) treatment of the TiAl alloy are tested and discussed for the optimization of the relationship between mechanical properties and the structure resulting from heat treatment. Fe, V, and B are added for improved castability to a TiAl alloy newly developed in this report, and this allows {beta} precipitation to take place which does not occur in the two-element alloy. Attention is paid to this {beta} phase, and the effect of homogenizing conditions and the amount of oxygen is investigated from the metallographic point of view. Some findings obtained are mentioned below. The {beta} phase size 30-50{mu}m emerges in the vicinity of {gamma} grains, containing more Fe and V in the solid solution state than the other structural phases. The {beta} phase rich in Fe and V concentration is high in Vickers hardness, and is supposedly brittle at room temperature. The added oxygen reduces the amount of {beta} phase precipitation for the stabilization of the {alpha} phase. The TiAl alloy containing Fe, V, and B exhibits a duplex structure after HIP treatment and the homogenization process to follow. It has a tensile strength of 550MPa, proof stress of 390MPa, and elongation of 1.80%, on the average at room temperature. 14 refs., 10 figs., 1 tab.

  7. Fiscal 1999 research result report. Research on improvement of boiling heat transfer characteristics by photocatalyst wall; 1999 nendo hikari shokubai hekimen ni yoru futto netsu dentatsu tokusei kaizen ni kansuru kenkyu chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Research was made on improvement of the wettability and boiling heat transfer characteristics of a photocatalyst wall. Measurement experiment of the wettability was made for anatase type titan oxide-coated Al, SUS and Pb plates, rutil type titan oxide-flame coated SUS plate, raw plate, and oxide-plasma coated titan plate. In the ground experiment, the contact angles of distilled water and oil on specimen surfaces were measured. In the microgravity experiment, falling droplet images were recorded by using the facility of Japan Microgravity Center (JAMIC). For obtaining the effect of radioactive emission, UV irradiation, {gamma} ray and neutron beam irradiation by nuclear reactor, and {gamma} ray irradiation by Co-60 were carried out. As the experiment result, the rutil type titan oxide-flame coated SUS plate, nonconductor-coated titan plate, and zircaloy plate showed large improvement of the wettability by {gamma} ray irradiation with Co-60. It was also confirmed that in particular, titan shows the large effect of radioactive emission, and the wettability deteriorates rapidly after {gamma} ray irradiation. (NEDO)

  8. Improvement of the characteristics of a diagonal-flow fan in low flow range with casing-bleed-holes; Keshingu kiko ni yoru sharyu sofuki no teiryu ryoiki tokusei no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Ando, Yoichi; Sasaki, Kazuto; Yamaguchi, Sumio; Yamashita, Shoji; Shimada, Taichiro

    1999-09-01

    Generally, a high specific speed diagonal flow fan with a small pressure rise coefficient has a slight positive gradient part of the pressure rise - flow rate characteristics. In addition, the pressure fall is small, between the flow rate at which the impeller stall in the throttle closer and the stalling flow rate. In the case, Kaneko et al. suggest a way of improvement on performance characteristics by an inlet annular wing which removes a low-momentum fluid from a rotor tip region. However, in case of a fan that has a sharp drop of pressure rise in the stall characteristics, it is not clear that the stall characteristics can be improved by this way. In this study, in order to improve the unstable characteristics of a high pressure rise coefficient diagonal flow fan, Tip clearance flow has been investigated on five rotor-casings with various holes to bleed low-momentum fluid in the range of flow rate from design point to stall point. (author)

  9. Evaluation of mechanical properties of construction joint between new and old concrete under combined tensile and shear stresses; Shinkyu concrete no uchitsugime no incho sendan oryokuka no kyodo tokusei no hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Ujiike, I. [Ehime University, Ehime (Japan). Faculty of Engineering; Yoshida, N. [Shikoku Railway Company, Kagawa (Japan); Morishita, S. [Oriental Construction Co. Ltd., Tokyo (Japan)

    1998-01-15

    The objective of this study is to examine the mechanical properties of construction joints between existing and newly placed concrete under combined tensile and shear stresses. Loading tests are conducted by using push off type specimens. The joint surface of existing concrete is roughened by shot blast and a half of the specimen is reconstructed by new concrete using ultra rapid hardening cement. The insufficient treatment of joint surface of the old concrete causes the lowering of tensile rigidity, while shearing rigidity is almost the same as that of the other specimen. The shearing and tensile rigidities of non jointed concrete and concrete shot blasted properly are not dependent on the combination of shearing and tensile forces. For the jointed concrete shot blasted insufficiently, the shearing rigidity decreases with the increase of tensile force and the tensile digidity also becomes lower by the action of shearing force. Both the tensile strength and shearing strength of jointed concrete become small compared to those of non jointed concrete. The ratio of reduction in tensile strength is larger than that in shearing strength. The strength of jointed concrete under combined tensile and shear stresses can be evaluated by Mohr`s failure envelope expressed by parabola tangent to both tensile strength circle and compressive strength circle. 7 refs., 12 figs., 2 tabs.

  10. Changes of the temperature coefficients of the characteristics which accompany degradation and recovery of a-Si solar cells; A-Si taiyo denchi no hikari (denryu) rekka oyobi kaifuku ni tomonau tokusei ondo keisu no henka

    Energy Technology Data Exchange (ETDEWEB)

    Yanagisawa, T; Koyanagi, T; Nakamura, K; Takahisa, K; Kojima, T [electrotechnical Laboratory, Tsukuba (Japan)

    1996-10-27

    Pursuant to the measuring of temperature dependency of the characteristics such as conversion efficiency, during the process of degradation in a-Si solar cells due to light and electric current and the process of recovery by annealing, this paper describes changes in temperature coefficients, correlation between the characteristic parameters and the degradation, and the results of the examination of their characteristics. The conversion efficiency {mu} degraded approximately by 45% of the initial value each by the irradiation under a light intensity with 3 SUN accelerated and by the infusion of current at 20mA/cm{sup 2}; and then, the efficiency recovered to 70-75% of the degradation by subsequent annealing. In addition, in the temperature dependency at 80{degree}C against at 20{degree}C, Isc slightly increased while Vcc greatly decreased. This slight increase in Isc was mainly due to the decrease in the width of the forbidden band, while the decrease in Vcc was due to the increase in the reverse saturation current. The temperature dependency of {mu}N was negative, becoming small in accordance with the degradation. The temperature dependency of FF/FFO was negative initially both in light and current, but it decreased with the degradation and turned to positive. The temperature coefficients of I-V parameters reversibly changed corresponding to the degradation and recovery of these parameters and stayed in a good correlation. 7 refs., 8 figs., 1 tab.

  11. Estimation of spectral solar radiation based on global insolation and characteristics of spectral solar radiation on a tilt surface; Zenten nissharyo ni motozuku zenten nissha supekutoru no suitei to keishamen bunko tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Baba, H; Kanayama, K; Endo, N; Koromohara, K; Takayama, H [Kitami Institute of Technology, Hokkaido (Japan)

    1996-10-27

    Use of global insolation for estimating the corresponding spectral distribution is proposed. Measurements of global insolation spectrum throughout a year were compiled for clear days and cloudy days, ranked by 100W/m{sup 2}, for the clarification of spectral distribution. Global insolation quantity for a clear day was subject mainly to sun elevation. The global insolation spectral distribution with the sun elevation not lower than 15{degree} was similar to Bird`s model. Under the cloudy sky, energy density was lower in the region of wavelengths longer than the peak wavelength of 0.46{mu}m, and the distribution curve was sharper than that under the clear sky. Values given by Bird`s model were larger than measured values in the wavelength range of 0.6-1.8{mu}m, which was attributed to absorption by vapor. From the standard spectral distribution charts for the clear sky and cloudy sky, and from the dimensionless spectral distributions obtained by dividing them by the peak values, spectral distributions could be estimated of insolation quantities for the clear sky, cloudy sky, etc. As for the characteristics of spectral solar radiation on a tilt surface obtained from Bird`s model, they agreed with actually measured values at an angle of inclination of 60{degree} or smaller. 6 refs., 10 figs., 1 tab.

  12. Characteristics of combined propulsion, levitation and guidance system with asymmetric figure between upper and lower coils in EDS; Joge coil ga hitaishona suishin fujo annai ken`yo yudoshiki jiki fujo no tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Murai, T.; Fujiwara, S. [Railway Technical Research Institute, Tokyo (Japan)

    1996-11-20

    In commercializing the superconducting maglev system it is important to reduce the cost, especially that of ground coils constructed along the whole length of the guideway. For a system to save the cost, we have examined the combined propulsion, levitation and guidance system (PLG system) which can generate levitation, guidance and propulsion forces by the same ground cogs. This system is composed of superconducting coils on board and 8-shaped ground coils on the side wall of the guideway whose unit coils are connected reversely between the upper and lower sides and between the right and left sides to make null flux circuits, and serially between the front and rear sides to make a three phase circuit with the power source. On the contrary, the EDS (Electro-Dynamic Suspension) maglev including the PLG system needs auxiliary wheels at low speed at which the levitation force and the electromagnetic stiffness are insufficient for non-contact running. The take off velocity is desirably made as low as possible for dispensing with the strength design and maintenance of track and wheels. Since the side wall levitation system has a large coupling between guidance and rolling, it is important to improve the stiffness considering this coupling, which restricts the take off velocity. The ground coils in the above- mentioned examination have symmetric figure and same impedance between upper and lower coda. This paper describes the PLG system with asymmetric figure between upper and lower coils which reduce the large coupling between guidance and roiling and increase the guidance stiffness. We present not only the principle but also the characteristics of this system with a numerical example and a test run at Miyazaki test track. 4 refs., 19 figs., 3 tabs.

  13. Study on driving control behavior for lane change maneuver. Analysis of expert driver using neural network system; Shasen henkoji no driver sosa tokusei. Neural network system ni yoru jukuren driver no kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Z; Okayama, T; Katayama, T [Japan Automobile Research Institute Inc., Tsukuba (Japan); Kageyama, I [Nihon University, Tokyo (Japan)

    1997-10-01

    In order to study driver steering control behavior for vehicle, a driver model for single-lane change maneuver is constructed by a neural network system concerned with the man-machine-environment system. And, using sensitivity analysis, it is found that the model represent the driver control behavior, and the relation between the driver control behavior and vehicle responses. The sensitivity analysis is also examined by applying to the 2nd order predictive driver model. The validity of the sensitivity analysis is confirmed. 5 refs., 8 figs.

  14. Report on achievements in fiscal 1975 in Sunshine Project. Studies on physical and chemical properties of rocks in geothermal areas; 1975 nendo chinetsu chitai ni okeru ganseki no butsuri kagakuteki tokusei ni kansuru kenkyu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1976-03-01

    This paper reports the achievements of (A) studies on change in rock specific resistance due to temperature and water content, and (B) petrological, mineralogical and chemical studies on thermally transformed rocks. In the study (A), it was discovered that use of high-pressure capsules allow to obtain test samples in a condition of containing hot water as a result of studies on temperature change in rock specific resistance due to hot water content. In the measurements of geothermal gradient and heat conductivity of test drilled rock cores, the experiments revealed that there are different patterns of temperature restoration due to geological conditions and finish of wells, and properties of mud water used. The studies on thermal structures and underground structures decided shapes of measurement test samples of test drilled cores. In the measurements of heat conductivity and heat flow rate of test drilled rock cores, considerations were given on the relationship among sectional temperature increasing rate, heat conductivity and heat flow rate. The measurements of residual magnetism and magnetization in rocks described interpretation on the result of test drilled core measurement. In the study (B), aluminous sphere in the Hachimantai Onuma geothermal area is first described. Then, a description is given on the relationship between chemical constituents and electric conductivity of natural water in Mt. Akita Yakeyama and its vicinity. (NEDO)

  15. Vibration characteristics and dynamic increment factor of 2 span continuous PC cable-stayed bridge under moving vehicles; 2 keikan renzoku PC shachokyo no sharyo sokoji no shindo tokusei to doteki zofukuritsu

    Energy Technology Data Exchange (ETDEWEB)

    Fukada, S.; Kajikawa, Y. [Kanazawa Univ. (Japan)] Tsunomoto, M. [Oriental Construction Co. Ltd., Tokyo (Japan)

    1998-10-21

    In this study, experiments on and simulation analyses of the travels of vehicles on a 2 span continuous PC cable-stayed bridge were conducted, and the propriety of the analysis method, vibration characteristics of traveling vehicles, and characteristics of the effective amplitude and dynamic increment factor concerning various traveling states were discussed. The results show that actually measured value of strain to a dynamic load substantially agreed with the value of strain obtained in the case of analysis in which the end fulcrums were movable. The actually measured value of natural frequency was between the value of natural frequency in the case of analysis in which the end fulcrums were movable and the value in the case of analysis in which the end fulcrums were in a pin state. The actually measured value of mode damping constant agreed exactly with the value of mode damping constant calculated on the assumption that the damping constant of the main beam is 1.0%, those of the main tower and bridge pier 5.0%, and that of the cables 0.1%. Therefore, the damping matrix in the dynamic response analysis was determined on the basis of the damping constants of these members. The characteristics of the effective amplitude and dynamic increment factor in various traveling states of the results of the simulation analysis are in comparatively good agreement with those of experiments. 20 refs., 17 figs., 5 tabs.

  16. Experimental investigation on wake galloping appeared in tandem cables of cable-stayed bridges subjected to wind in skewed direction; Normal narabini dimple tsuki heiretsu cable ni senpu ga sayoshita baai no wake galloping tokusei ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Yoneda, M.; Miyachi, S.; Edamoto, K.; Mochizuki, H.; Setouchi, H. [Kawada Industries Inc., Tokyo (Japan)

    1996-03-20

    Concerning the smooth surface and dimpled surface cables, experiments were conducted to investigate relationship between their wake galloping characteristics and aerostatic force characteristics they demonstrate when exposed to wind blowing in a skewed direction. The wind tunnel used for the experiment was a closed type measuring wind tunnel, 2.0m wide, 2.5m high, and 15.0m long. In the wind tunnel, two cables were arranged with the distance between the cable centers three times as large as the cable diameter D, and with relative vertical difference of 0.25-0.50D, and spring-supported experiments for evaluating wake galloping characteristics and aerostatic force coefficient determining experiments were carried out. It was deemed as the result that turbulence exerts influence on the wake galloping characteristics of the dimpled surface cable more than on those of the smooth surface cable, that on a real bridge the effect of turbulence may be expected in case of exposure to natural wind of turbulence with intensity higher than 5-7%, and that therefore application of some damping by dampers will adequately damp wake galloping even in case of the 0.37D vertical difference. 12 refs., 23 figs.

  17. Some considerations on special spacers with damping device for suppressing wake galloping in tandem cables of cable-stayed bridges; Heiretsu cable yo gensui kino tsuki supesa no gensui fuka tokusei ni kansuru 2,3 no kosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Yoneda, M. [Kinki Univ., Higashi-Osaka, Osaka (Japan). Faculty of Science and Technology] Setouchi, H. [Kawada Industries Inc., Osaka (Japan)

    1998-03-20

    Cable vibration called wake galloping appears on cable-stayed bridges with parallel arranged cables and its suppression is an important problem. Various methods have been proposed for spacers with damping device for suppressing wake galloping in tandem cables of cable-stayed bridges. But, comparison of damping performances of various methods have not been discussed sufficiently. This paper deals with a type in which dampers are equipped on the midway of the tandem cables through the spacer jig and a type in which dampers are equipped on each surface of the tandem cables to generate shear deformation between them and circular spacer jig moiety and complex eigenvalue analyses are carried out on the two types with changing center spacing and diameters of the cables. The results clarify the relation between the structural damping characteristics and the cable spacing and the effect of torsional rigidity of the cables and also clarify of damping characteristics of the two types. 16 refs., 14 figs., 4 tabs.

  18. Report on surveys in fiscal 2000 on the surveys and researches on fundamental technology of polymeric materials in relation to materials nano-technology program; 2000 nendo zairyo nano technology program ni kansuru kobunshi zairyo kiban gijutsu ni kansuru chosa kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-11-01

    On the 'polymeric' technology field being the constitution elementary technology of the material neon-technology program, surveys and researches have been performed through holding workshops on the directionality of technological development to be proceeded in a medium term in the future, and the assignments to be worked on with emphasis. The 'Fundamental technology of polymeric materials workshop' was held together with the 49th polymer discussion meeting, in which 300 persons have attended showing high interest of researchers. With regard to the prospect and possibility of the polymeric technology, statements were given on the ways the polymeric technology development should be in the future, and expectations toward the polymeric technology. In the development assignments for the polymeric technology, discussions were given on the current status and problems in the primary structure control technology, tertiary structure control technology, and surface and interface structure control technology. Discussions were also given on the current status and problems in textiles as the high-order structure control technology, the current status and problems in the material forming technology, and the systematization of the polymeric technology and the knowledge thereof. The core of the polymeric technology is the nano-technology itself, whereas the expectations toward the 'Fundamental Polymeric Technology Research Center' were indicated. (NEDO)

  19. FY 2000 report on the results of the regional consortium R and D project - Regional consortium energy. First year report. Development of a next generation biopolymer information measuring system based on the nano channel electrophoresis; 2000 nendo chiiki consortium kenkyu kaihatsu jigyo - chiiki consortium energy. Nano channel denki eido ni motozuku jisedai seitai kobunshi joho keisoku system no kaihatsu (dai 1 nendo) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    On the basis of the nano channel electrophoresis technology, the construction was proceeded with of a system which integrates the basic process such as reaction, separation and detection needed for measuring biopolymer information and analyzes a number of samples simultaneously and with high accuracy/high sensitivity. Studies were made in the following three fields: 1) development of the basement technology on extraction/amplification/separation/detection of biopolymer; 2) development of micro-processing technology and system design and study on the development of device; 3) comprehensive investigational study. In 1), developmental technology is divided into the following: technology to effectively fraction/refine biopolymer from biological samples, technology for recognition control and manipulation of biopolymer, technology of amplification use micro-reaction of biopolymer, multiple selection technology of biopolymer using the specific molecular recognition, and technology for ultra-high speed separation of biopolymer. As to the multiple selection technology, DNA terminal recognizing hemin is altered by thiol group and connected to the surface of electrode to make an electrode type hemin recognition device. (NEDO)

  20. Fiscal 1998 achievement report on regional consortium research and development project. Venture business fostering regional consortium in its 2nd year--Creation of key industries (Development of processing of new structure-designed high-performance polymer alloy); 1998 nendo shinkina kozo seigyo koseino kobunshi alloy no seikei kako ni kansuru kenkyu kaihatsu seika hokokusho. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Efforts are exerted to make novel recyclable polymer alloys excellent in material characteristic and to develop a technology for processing them, for which liquid crystalline polymers equipped with a self-alignment capability are combined with thermoplastic resins. In the research on the alloying of polyethylene terephthalate (PET) and liquid crystal polymers (LCP), studies are conducted about inorganic nucleating additives, thermostabilizers, and mold releasing lubricants, and a success is attained in the manufacture of excellent alloyed pellets. In the injection molding of alloys of PET and LCP, a product is obtained, among those produced with the rate of LCP varied, which behaves excellently even at a high resin temperature of 285 degrees C. It is found about PET/LCP alloys that improvement is achieved with additional LCP in terms of the warpage temperature under load, bending property, strength, and dimensional stability upon exposure to heat. In the study of the response of LCP-diffused PET to a process demanding distortion, an injection-molded product containing 10-20% of LCP is found to exhibit excellent ductility. It is also found that PET/LCP alloys may be cut and machined easily and that therefore their crushing for the recycling purpose will be easy. (NEDO)

  1. Fiscal 1999 achievement report on regional consortium research and development project. Regional consortium research and development in its 1st year (Development of plastic/metal compositing technology utilizing biogradable natural macromolecules); 1999 nendo seibunkaisei tennen kobunshi wo katsuyoshita plastic to kinzoku no fukugoka gijutsu no kaihatsu seika hokokusho. 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Research and development is conducted to composite plastic and metal into an electromagnetic shield, for which the metal adsorbing function of chitin and chitosan which are biomass to be obtained from crab and lobster shells is utilized. In the research and development of a method for manufacturing chitosan with its molecular weight decreased, it is found that the molecular weight of the substance is effectively lowered by the use of amorphous chitin as the matrix, lysozyme, chitinase, and chitosanase. In the research on the application of biogradable materials to an electromagnetic shield, studies are conducted about the melting and dispersion of biogradable materials into the primer used for pre-coating treatment. In the evaluation of the physical properties and functions of a novel electromagnetic shield system, coatings prepared by use of various chitosan derivatives are tested, and then it is found that a 2,4-dihydroxybenzaldehyde derivative achieves excellent adhesion. Studies are conducted as to how to decompose such a shield system, when experiments are performed for a chitosan derivative film etc. (NEDO)

  2. FY 2000 Development of international standard supporting new industries. Standardization of the test method for performance evaluation for polymer products under critical environment; 2000 nendo shinki sangyo shiengata kokusai hyojun kaihatsu jigyo seika hokokusho. Kakoku kankyoka ni okeru kobunshi seihin no seino hyoka shiken hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    This project is aimed at development of the testing methods which can adequately predict resistance of polymer products to weather in various areas of largely different environmental conditions. Described herein are the FY 2000 results of the outdoor exposure tests, and the tests in which the samples are exposed to light from a laboratory source and to a solar light-concentrating test unit. The FY 2000 project include the exposure of the samples directly to the outdoor conditions and glass-filtered light, which are continued from the previous year; solar light-concentrating type exposure tests conducted in Arizona, USA, started in this year; and reproduction tests for the exposure to a xenon lamp light, review of short exposure time areas and spectral degradation tests, among others. The program for evaluating the reference materials includes measurement of cumulative property changes of 4 types of plastic and 10 types of rubber materials by the exposure tests. The tests of resistance of plastics to weather have been exposing the samples, stabilized and not stabilized, for 16 months. For the reference candidate samples, the data of exposure for 1 month are collected 16 times. The tests of resistance of the rubber materials to weather reveal that each sample is deteriorated by hardening and deterioration proceeds with time. (NEDO)

  3. Research and development of basic technologies for next generation industries, 'high-efficiency polymeric separation membrane material'. Evaluation on first term final research and development; Jisedai sangyo kiban gijutsu kenkyu kaihatsu. Kokoritsu kobunshi bunrimaku zairyo (daiikki kenkyu kaihatsu hyoka)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1985-03-30

    The first term has performed research and development placing emphasis on that 'the basic study on membrane separation is to be performed systematically to elucidate governing factors in membrane separation'. With respect to water/ethanol separation by using the penetration gasifying method, it was indicated that excellent separation performance can be exhibited by using natural polymers having sugar chain skeleton as a raw material, and by controlling the membrane structure by means of membrane manufacturing methods. For enhancement of performance in water selective permeation type separation membrane, it was shown experimentally that it is important to select a membrane suitable for the object of separation and a separation method that uses the selected membrane. Regarding the water/ethanol separation, it was shown theoretically that the penetration gasifying method can save more energy than the conventional distillation method, where the development target was presented. It was recognized that impregnation type liquid membrane using crown ether can separate amino acid optical isomers. High separation performance was obtained in carbon monoxide/nitrogen separation by using fluid carrier that uses cuprous iodine/1-methyl imidazole. (NEDO)

  4. FY1995 establishment of extracellular matrix engineering by the combination of genetic engineering and polymer engineering and the application to super-bioartifical liver; 1995 nendo idenshi kogaku to kobunshi kogaku wo yugoshita atarashii saibogai matrix kogaku no sosei to super bio jinko zoki kaihatsu eno tenkai

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Cellular and tissue engineering for bioartificial organs need lots of information about extra-cellular matrices and cytokines network which play important roles for the regulation of cellular function. In order to develop high performance artificial livers, we made establishment of extracellular matrix (ECM) engineering by the combination of genetic engineering and polymer engineering. We designed a superglycoprotein-like polymer (PVLA) as a specific model ligand to asialoglycoprotein receptors (ASGP-R) on hepatocytes. Hepatocytes morphology was remarkably affected by PVLA concentration for coating on polystyrene dishes. In addition, hepatic functions such as differentiation and proliferation were closely related with cell morphology. Especially, round hepatocytes on the polystyrene surface coated with high concentration of PVLA were found to reconstruct 3D liver-like tissue stimulated by EGF. It turned out that the adsorptive states of PVLA polymeric micells can switch the function of EGF to be motogenic or mitogenic. The mechanisms of 3D-tissue formation on two types of substrata mediated by ASGP-R were examined. The proliferation and cell death (apoptosis) in hepatitis of hepatocytes were also examined in the viewpoint of cytokine network such as TNF - {alpha} and interferon-{gamma}. The highly efficient gene-transfection into hepatocytes was also successfully made using PVLA as ECM for cell attachment. As one of the trials to clarify liver cells society formation the mechanism of the final differentiation of kupffer cells and the role of HGF in embryonic construction of liver were successfully examined. (NEDO)

  5. Analysis and evaluation of data to accompany the development of geothermal water use power plant, etc. Analysis and evaluation of polymeric materials exposed to geothermal heat at depths; Nessui riyo hatsuden plant nado kaiahtsu ni tomonau data no kaiseki hyoka. Shinbu chinetsuyo kobunshi zairyo no kaiseki hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Kenmochi, K.; Takahashi, J.; Takayanagi, H.; Tsuda, H.; Nagai, H.; Takeuchi, K. [Agency of Industrial Science and Technology, Tokyo (Japan); Nagasawa, C. [Kumamoto Prefectural Industrial Technology Center, Kumamoto (Japan); Hamada, T. [Science University of Tokyo, Tokyo (Japan). Faculty of Industrial Science and Technology

    1998-11-20

    Remaining life assessment technologies for polymeric materials for geothermal power generation and methods for improving their heat resistance are reviewed, and concepts of scale-free technologies for FRP (fiber-reinforced plastic)-sandwiched pipelines for hot water transportation are described. Materials based on PTFE (polytetrafluoroethylene) and NBR (acrylonitrile-butadiene rubber) are chosen for use as DHM (down-hole motor) sealing material and for application to the stator. With PTFE as the matrix, four candidates are prepared, which are additive-free PTFE, and GF/PTFE, GF/CF/PTFE, CF/PTFE, each containing 20w% GF (glass fiber) and/or 20w% CF (carbon fiber). With NBR serving as the matrix, two candidates are prepared, which are NBR-A containing 20w% aramid fiber and NBR-W which is a vulcanized NBR-A. External force, heat, light, and mud are named as the degradation factors, and each factor and some combinations of external force, heat, and light are repeatedly imposed on the materials. During the effort to develop an apparatus for simulating geothermal circumstances in which the factors will affect the materials in complicated ways, a life assessment technique is developed for such polymeric materials. A technology is developed for providing polymeric rubber elastomer with a heat resistant feature. A study is made to replace transportation pipelines for injection wells with FRP sandwiched pipelines. (NEDO)

  6. FY 1999 project on the development of new industry support type international standards. Standardization of a testing/evaluation method of the performance of polymer products under the severe environment; 1999 nendo shinki sangyo shiengata kokusai hyojun kaihatsu jigyo seika hokokusho. Kakoku kankyoka ni okeru kobunshi seihin no seino hyoka shiken hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    The R and D were conducted with the aim of standardizing a testing method for appropriately predicting weatherability of polymer products also in areas where environmental conditions are largely different and of proposing it to ISO. The FY 1999 results were outlined. In this fiscal year, methods to test weatherability of polymer products abroad and in Japan were surveyed mostly on JIS and ASTM, and the state of tackle with the making of standards in each country was also surveyed. In the tests on plastics and rubber, the following were conducted: selection/fabrication of test pieces, 3-year outdoor exposure tests in three places in Japan where environmental conditions are different, in the U.S. and in Indonesia, artificial light source exposure tests for about 200-1000 hours using xenon lamp, and the subsequent measurement of physical properties. As a result, about plastics, changes were confirmed in case of having no prescription of weatherable stabilizer, and changes in property values were in the range of prediction in case of having prescription. About rubber, changes in physical property after the direct exposure test were large in the U.S. and Indonesia. The effect of antioxidant was recognized. (NEDO)

  7. Report on achievements in fiscal 1999 on the project for research and development of an intellectual base creating and utilizing technology. Research and development of standard substances related to polymers; 1999 nendo chiteki kiban sosei riyo gijutsu kenkyu kaihatsu jigyo gyomu seika hokokusho. Kobunshi ni kansuru hyojun busshitsu no kenkyu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    This paper describes the achievements in fiscal 1999 on researching and developing standard substances related to polymers. Investigations were performed on polystyrene with average molecular weights of 300 to 2,000 being the standard polymeric substance as the primary subject, and polycarbonate with molecular weight of about 300,000 as the secondary subject. Development was executed on the fundamental technologies related to chromatographic conditions for separation to acquire polymers without molecular weight distribution or with very little distribution (single dispersion), and sampling conditions for the sampling chromatography. Uniform polymers were used as the primary calibration standard substance to have developed the fundamental method and the fundamental conditions to value exactly the average molecular weight values such as in the single dispersion test. Polyvinyl chloride (PVC) was taken up as the valuing material as a polymeric material with less secular change being the indispensable element as the standard substance, and capable of being stably supplied. Round robin tests were performed by 16 testing organizations on the tensile elasticity specified in ISO10350 in accordance with the international standard guide 35 to have valued the standard substances. Variance in property values of PVC sheets was analyzed, and the standard deviation was verified. (NEDO)

  8. Fiscal 1993 R and D project for industrial science and technology. Report on results in developing methane-fueled aircraft engine (R and D on silicon-based polymeric material); 1993 nendo methane nenryo kokukiyo engine kaihatsu seika hokokusho. Keisokei kobunshi zairyo no gijutsu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-03-01

    R and D was conducted on silicon-based polymeric materials for structural use, for the purpose of establishing fundamental technologies such as molecular design, synthesis, material forming and evaluation method concerning silicon-based polymers, with the fiscal 1993 results summarized. In the studies of synthesis technologies of silicon-based polymeric materials having a sea-island structure, a series of polymers with an Si-C main chain structure were prepared by ring-opening polymerization of the cyclic monomers. In the studies of interpenetrating polymer network (IPN) structure forming technologies, polycarbosilanes with superior thermal stability and solvent solubility were synthesized through structural control based on molecular design. In the studies of composite structural materials between organic metallic complex and silicon-based high polymer, the compounding was carried out by introducing or blending organic metallic complex into the main chain of silicon polymer, with evaluation made on the heat resistance. The studies of silicon polymer structural materials having a ring structure were conducted on high heat resistant polymers that were obtained by dehydrocoupling polymerization with magnesia as a catalyst. (NEDO)

  9. Project in fiscal 2000 of developing international standards for supporting new industries. Standardization of method for evaluating thermal properties test on polymeric materials; 2000 nendo shinki sangyo shiengata kokusai hyojun kaihatsu jigyo seika hokokusho. Kobunshi zairyo no netsutokusei shiken hyoka hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    Targeting at proposing to ISO as an international standard, R and D has been performed on a method of the alternating current heating of the non-constant method, with regard to a method to evaluate the thermal properties test on polymeric materials in molten condition reflecting thin film polymeric materials, and the forming and processing technology. This paper summarizes the achievements in fiscal 2000. The current fiscal year has executed surveys on literatures related to thermal properties, development and commercialization of a measuring device, establishment of the measurement procedure, and putting some of the materials into database. The database was prepared mainly for heat diffusion rate and heat conductivity, wherein about 1000 items of information were collected. The temperature range of the measuring device revealed that stabilized data can be obtained from as low temperature as liquid nitrogen temperature to as high as 200 degrees C. The commercially available measuring device has no restrictions if the test sample thickness is from 1 mm to 100 mm, if the temperature range is from room temperature to 350 degrees C, if the temperature rising rate is from 0.01 to 5 K/min, and if the test sample form is film. Measurement at temperatures including those in the melting zone in the forming stage of each polymer has achieved as close result as having been called for in the initial objective. (NEDO)

  10. Achievement report for fiscal 1983 on Sunshine Program-entrusted research and development. Research on hydrogen production technology using electrolysis (Research on electrolysis of water using alkali type solid polymer electrolyte); 1983 nendo denki bunkaiho ni yoru suiso seizo gijutsu no kenkyu seika hokokusho. Arukarigata kotai kobunshi denkaishitsu suidenkai no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1984-03-01

    The report covers the outcome of the research conducted for the establishment of basic techniques for the electrolysis of water using the alkali type solid polymer electrolyte. This fiscal year, following the previous fiscal year, anode materials fit for the electrolysis of water by the AZEC method are investigated, and a medium-size cell, high-temperature cell, and test unit are built. As the result, it becomes clear that the Raney Nickel electrode is relatively active as anode as well as cathode and that it is excellent in durability. The Raney Nickel electrode, with its activity further improved by modification using rhodium and rhenium, is durable, and exhibits the lowest overvoltage. As for the medium-size cell, a cell structure excellent in outgassing while maintaining electrode flatness is sought for, and it is found that it is capable of electrolytic performance similar to that of a small-size cell. As for the high-temperature cell, studies are conducted about the impact of temperature and pressure on the bath voltage. The pressure control system experimentally built in this research is found to be excellent in transient response too. (NEDO)

  11. Research and development project in fiscal 1988 for fundamental technologies for next generation industries. Achievement report on research and development on electrically conductive polymeric materials (Report 1 for re-commissioned research); 1988 nendo dodensei kobunshi zairyo no kenkyu kaihatsu seika hokokusho. 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1989-03-01

    Theoretical research was performed on the electron status of electrically conductive polymers, and on molecular designs. The research was made on the theme of the 'mobility of soliton in polyacetylene', wherein analysis was made on movements of soliton that carries charge in relatively low doping regions. Three researchers, Ono, Obuchi, and Iwano have proposed in the previous fiscal year the numerical simulation on the impurity effects with regard to the problems in chains of soliton. Its result is reported in this paper. In the current fiscal year, Ono has executed the simulation on the systems of even numbers having the total sites and electrons in the same number. Obuchi has applied the method discussed in the previous fiscal year to the cases having the total number of sites at 101, the number of electrons at 101 and 105, and the dopant concentration of 2 to 5%. Iwano has performed simulations on the bond type impurities for the case of even numbers with the total number of sites and electrons in the same number, the case with the total number of sites at 201 and the number of electrons at 200, and the case wherein the total number of sites is in even number, and the number of electrons in odd number. Haritani has applied CPA, and obtained new findings on the impurity band in the electron spectral gap. (NEDO)

  12. Report on achievements in fiscal 1998. Venture business growing type consortium - small business creating infrastructure (Research on polychloride vinyl resin substituting technology applying technology to reform surface of polymeric materials); 1998 nendo kobunshi zairyo no hyomen kaishitsu gijutsu wo oyoshita pori enka biniru jushi daitaika gijutsu ni kansuru kebnky seika hokokusho.

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    This project is intended to develop a technology to substitute polyvinyl chloride resin being regarded as the generation source of dioxines and environmental hormones in spite of being low in cost and having many excellent characteristics, with polyolefin resin having the same mechanical properties. It has become possible to improve adhesion of polyolefin, and substitute the products manufactured by using polyvinyl chloride resin currently with the polyolefin resin having about the same mechanical properties by establishing the technology to form two layers of polyolefin resin and modified polyolefin resin having polar groups, and by developing a bonding pretreatment agent using soft polyolefin resin as the base. The developed technology can be applied to developing products as targeted by the business entities participating in this project (the edge material for bath tub lids, a product currently available, and the water draining pipe as a new product). The current fiscal year has executed the following activities: (1) improvement in high-frequency weldability by means of polymer blending, (2) development of primers, (3) development of a two-layer forming technology to laminate resin layers with excellent adhesion on material surface, and (4) development of the plasma treatment technology. (NEDO)

  13. FY 2000 report on the results of the research and development project for utilization of information of high-molecular-weight structures in a living body. Survey on the technological trends of utilizing the reactions with metals in a living body; 2000 nendo seitai kobunshi kozo joho riyo gijutsu kaihatsu chosa hokokusho. 'Seitai kinzoku hanno riyo gijutsu' ni kansuru gijutsu doko chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    Described herein are the FY 2000 results of the survey on the technological trends of utilizing the reactions with metals in a living body, noting the bio-processes effectively coping with the environmental problems. The effects of heavy metals on microorganisms have been investigated on the molecular biology level, but are not fully elucidated. Recently, the microorganisms capable of converting inorganic metal ions in water into the insoluble compounds have been known, leading to possibility of bioremediation to solve pollution by heavy metals, which have detrimental effects on human health. Heavy metals must be recovered, because they are not extinct by decomposition. The plant aided purification has been attracting attention to cope with heavy metals accumulated in soil. Application of bacteria-aided leaching, which is adopted as one ore smelting process, to the technologies for utilizing metals in a living body has been expected, because diversified activities of inanimate matters in extreme environments have been known. Recently, bio-machining of metals aided by Thiobacillus ferrooxidans, one species of independent nutrient bacteria capable of eating metals, has been developed to a potentially viable stage. (NEDO)

  14. Report on surveys in fiscal 2000 on the surveys and researches on fundamental technology of polymeric materials in relation to materials nano-technology program; 2000 nendo zairyo nano technology program ni kansuru kobunshi zairyo kiban gijutsu ni kansuru chosa kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-11-01

    On the 'polymeric' technology field being the constitution elementary technology of the material neon-technology program, surveys and researches have been performed through holding workshops on the directionality of technological development to be proceeded in a medium term in the future, and the assignments to be worked on with emphasis. The 'Fundamental technology of polymeric materials workshop' was held together with the 49th polymer discussion meeting, in which 300 persons have attended showing high interest of researchers. With regard to the prospect and possibility of the polymeric technology, statements were given on the ways the polymeric technology development should be in the future, and expectations toward the polymeric technology. In the development assignments for the polymeric technology, discussions were given on the current status and problems in the primary structure control technology, tertiary structure control technology, and surface and interface structure control technology. Discussions were also given on the current status and problems in textiles as the high-order structure control technology, the current status and problems in the material forming technology, and the systematization of the polymeric technology and the knowledge thereof. The core of the polymeric technology is the nano-technology itself, whereas the expectations toward the 'Fundamental Polymeric Technology Research Center' were indicated. (NEDO)

  15. Fiscal 2000 achievement report on project for research and development of intelligent infrastructure creation and utilization technologies. Research and development of reference materials for polymers; 2000 nendo chiteki kiban sose riyo gijutsu kenkyu kaihatsu jigyo seika hokokusho. Kobunshi ni kansuru hyojun busshitsu no kenkyu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    As one of the efforts to establish national reference materials at an accelerated pace in a concentrated manner, a comprehensive survey was conducted on reference materials for polymers, and research and research was conducted for the development of such. In the comprehensive survey, investigations were made into the actual use of reference materials for polymers and their management at private-sector enterprises and public research institutes in Japan and at research bodies in the U.S. and Canada. In the development of reference materials for polymers, a procedure was contrived for synthesizing monodisperse oligostyrene specimens, polymerization was carried out using an improved synthetic method, and molecular weight distribution was analyzed. Using a homogeneous oligostyrene reference material for calibration, the mean molecular weight of an oligostyrene reference material was accurately evaluated by size-excluded chromatography. In the case of a specimen with its mean molecular weight not more than 1,000, the result exhibited excellent agreement with what supercritical fluid chromatography indicated. In the development of reference materials for characteristics evaluation, this in relation to methods for evaluating thermomechanical characteristics of plastics, efforts were made to develop reference materials for evaluating dynamic viscosity/elasticity of solid plastics. (NEDO)

  16. FY 1999 project on the development of new industry support type international standards. Standardization of evaluation testing method of thermal properties of polymer materials; 1999 nendo shinki sangyo shiengata kokusai hyojun kaihatsu jigyo seika hokokusho. Kobunshi zairyo no netsutokusei hyoka shiken hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    For the purpose of proposing it to ISO, the R and D were conducted of a new evaluation method of thermal properties of polymer materials. The FY 1999 results were summarized. In this fiscal year, the development of the ac Joule heating equipment was proceeded with based on the study at the technical committee, and the measuring device was installed. In the comparative measurement with conventional methods, study was proceeded with of the laser flash method, AC calorimetry method and specific heat measurement. In the technical survey, the developmental state of the ac method, especially, was examined as a testing method of thermal properties of polymer materials. It is in the stage of the basic research by keyword selection, and the search for literature is to be made in full scale. As to the needs in the industrial circle, as a result of the questionnaire survey made, it was found out that there were a wide variety of the needs for general-purpose/functional film materials, forming materials, composite materials, coating, adhesives, cohesive materials, etc. Further, as the application field, construction materials, agriculture, food, packaging, etc. were cited in addition to the magnetic recording in electric/electronic relations, sensor insulation, OA equipment, wiring board, etc. (NEDO)

  17. Present status of and subjects on the industrial utilization of polymer separation membranes. Japan`s first largest sea water desalination plant by RO; Kobunshi bunrimaku no sangyo riyo no genjo to kadai. Zosui bun`ya ni okeru maku riyo

    Energy Technology Data Exchange (ETDEWEB)

    Furuichi, M. [Kurita Water Industries Ltd., Tokyo (Japan)

    1998-07-05

    The utilization in Japan and abroad is discussed of desalination methods using evaporation, reverse osmosis (RO) membranes, and electrodialysis membranes, out of various desalination techniques for seawater and others containing more salt. A new seawater desalination plant built in Okinawa, Japan, is outlined, and the future trend of Japan`s efforts for desalination is predicted. The said plant in Okinawa is the largest ever built in this country, and occupies 4th or 5th place in terms of capacity among similar facilities across the world. It was completed in April, 1997, and produces pure water at a rate of 40,000m{sup 3}/day. This plant, operating on RO, comprises eight RO membrane units each capable of 5131{sup 3}/day. The membranes are of the spiral type, consisting of Toray`s crosslinked aramid-base composite membranes and Nitto Denko`s membranes composed totally of crosslinked aromatic polyamide. The greatest of the pending tasks is to reduce the desalination cost. As for the operating cost of the desalination facility at the current stage, it costs 120-130 yen/m{sup 3} on the 40,000m{sup 3}/day scale, and the power cost occupies approximately 60% of the total operating cost. It is concluded that the consumption of electric power and chemicals per pure water produced have to be reduced. 8 refs., 5 figs., 5 tabs.

  18. Fiscal 1997 project on the R and D of industrial scientific technology under consignment from NEDO. Report on the results of the R and D of silicon-based polymeric materials (development of liquid methane fueled aircraft engine); 1997 nendo sangyo kagaku gijutsu kenkyu kaihatsu jigyo / Shin energy Sangyo gijutsu Sogo Kaihatsu Kiko itaku. Keisokei kobunshi zairyo no kenkyu kaihatsu (methane nenryo kokukiyo engine kaihatsu) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This R and D aims at establishing the basic technology on the molecular design, synthesis, use as materials, and evaluation of silicon-based polymers, of which excellent electronic/optical functions, high heat-resistance/combustion-resistance/dynamic characteristic are expected. The paper introduced the results of the fiscal 1997 R and D of them. The themes are as follows: technology of synthesis of silicon-based polymeric materials with sea-island microstructures, interstitial type structure forming technology, composite materials with organometallic complexes and silicon-based polymers, silicon-based polymer structural materials with ring structures, optimization of the Wurtz`s synthesis method of silicon-based polymers, unsaturated and hypercoordinate organosilicic compounds, function of silicon-based polymers, synthesis and polymerization of new silicon-based monomers, development of a new synthesis method of polysilane and the function, development of new application of silicon-based polymers in imaging devices for recording/memory/display of information, molecular design of {pi}-conjugate and {sigma}-conjugate compounds including silicon, and conformation and electronic state of silicon-based polymeric materials. 186 refs., 141 figs., 68 tabs.

  19. FY 2000 report on the results of the research and development project for utilization of information of high-molecular-weight structures in a living body. Survey on the technological trends of utilizing the reactions with metals in a living body; 2000 nendo seitai kobunshi kozo joho riyo gijutsu kaihatsu chosa hokokusho. 'Seitai kinzoku hanno riyo gijutsu' ni kansuru gijutsu doko chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    Described herein are the FY 2000 results of the survey on the technological trends of utilizing the reactions with metals in a living body, noting the bio-processes effectively coping with the environmental problems. The effects of heavy metals on microorganisms have been investigated on the molecular biology level, but are not fully elucidated. Recently, the microorganisms capable of converting inorganic metal ions in water into the insoluble compounds have been known, leading to possibility of bioremediation to solve pollution by heavy metals, which have detrimental effects on human health. Heavy metals must be recovered, because they are not extinct by decomposition. The plant aided purification has been attracting attention to cope with heavy metals accumulated in soil. Application of bacteria-aided leaching, which is adopted as one ore smelting process, to the technologies for utilizing metals in a living body has been expected, because diversified activities of inanimate matters in extreme environments have been known. Recently, bio-machining of metals aided by Thiobacillus ferrooxidans, one species of independent nutrient bacteria capable of eating metals, has been developed to a potentially viable stage. (NEDO)

  20. Project in fiscal 2000 of developing international standards for supporting new industries. Standardization of method for evaluating characteristics measurement for micromachine materials; 2000 nendo shinki sangyo shiengata kokusai hyojun kaihatsu jigyo seika hokokusho. Micro machine yo zairyo no tokusei keisoku hyoka hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    Targeting the international standardization of the method for evaluating properties measurement for micro-machine materials, R and D has been performed on measurement and evaluation of mechanical properties of different thin film materials with a thickness of about 10 {mu}m or less and a width of 100 {mu}m or less. This paper summarizes the achievements in fiscal 2000. The current fiscal year has executed tensile tests of thin film materials for micro-machines, and surveys on technological trends related to the standardization thereof inside and outside the country. A working process was developed to manufacture test pieces of the thin film materials including mono-crystalline silicon for the purpose of executing the round robin test. Prototype test pieces were fabricated. The round robin test was performed by using these test pieces, wherein improvements were given on the test pieces, structure of the testing machine, the distortion measuring method, and the test piece mounting method. Furthermore, discussions were given on the film forming conditions and the heat treatment conditions with regard to mainly the thin titanium film made by using the sputtering process and thin nickel film made by using the plating process. The IEC/TC47/WG4 committee has announced to propose this evaluation technology as the future international standard. (NEDO)

  1. Experimentation to seek the local speciality in kWh of P.V. system, and a study of its measuring method and instruments and apparatus; Taiyoko hatsuden system no jibetsu hatsudenryo no chiiki tokusei wo motomeru jissho shiken narabini, sono sokutei kansoku no hoho kiki ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Anno, T.

    1997-11-25

    Introduced in this paper are some problems that the author encounters in relation with a 2.6kW photovoltaic power generation system installed at the author`s residence for the purpose of measuring the hourly amounts of generated power. Giving rise to questions in the inverter and the control system are the conversion efficiency under a partial load, the scope of little amounts that are omitted, the maximum power point tracking system and its performance, etc. The author wants to learn how to land on an appropriate conductor thickness and to know the special specifications if any for heavy-snow regions and their effect. Much has been learned from presenters, moderators, and participants at scientific events and through private talks. Although it seems that there exists some relationship between the maximum power point tracking system and the diameter of conductors suitable for the system, yet the manufacturers fail to give clear-cut answers. The author thinks that end-users find many black box-like parts in the system, which the author leaves uncared for now for later study. It is learned that there is no specification intended exclusively for heavy-snow regions. The author`s system is in operation with hourly output recording and data accumulation started. 2 figs.

  2. Change of photovoltaic module conversion efficiency with the environmental factors in different site. Comparison of the conversion efficiency in Tokyo with the one in Nagano; Kotonaru chiten ni okeru taiyo denchi module no shutsuryoku tokusei no henka. Tokyoto Shinjukuku to Naganoken Chinoshi tono hikaku

    Energy Technology Data Exchange (ETDEWEB)

    Higuchi, T.; Tani, T.; Hirata, Y.; Inasaka, T. [Science University of Tokyo, Tokyo (Japan)

    1997-11-25

    Assuming that photovoltaic power systems were installed at two points, Shinjuku Tokyo and Chino Nagano, a study was conducted of difference in generated output of the systems caused by the difference in environmental factors. In the study, it was assumed that two of the photovoltaic power system with rated capacity of 3kW were installed at the two points, and the annual generated output was calculated and compared by the conventional method considering only cell temperature and the output estimation method considering intensity of solar radiation, cell temperature, and spectral distribution of solar radiation. The result of the study was as follows: the difference in output ratio at the two points was 1.7% or lower under the influence of intensity of solar radiation and cell temperature. On the other hand, under the influence of the distribution of spectral solar radiation, the difference is larger than under other environmental factors, 2.4% in polycrystalline Si and 5.5% in amorphous Si. The generated output estimated by the conventional method and the spectral method produced a difference between 81 kWh in Tokyo and 258 kWh in Nagano in amorphous Si. This is because environmental factors such as intensity of solar radiation and distribution of spectral solar radiation are different between the two points. 1 ref., 2 figs., 3 tabs.

  3. Fiscal 1998 intellectual infrastructure project utilizing civil sector functions. Research and development project on prompt-effect type intellectual infrastructure creation (Basic study of measurement of human characteristics); 1998 nendo minkan no kino wo katsuyoshita chiteki kiban jigyo seika hokokusho. Sokkogata chiteki kiban sosei kenkyu kaihatsu jigyo (Ningen tokusei keisoku ni kansuru kiban kenkyu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    For the development of working conditions fit for aged people and devices for them to operate, their visual function and behavioral characteristics are measured and analyzed. In the study of visual functions, 50 people from local cities and regions and another 50 from Osaka and its neighboring cities are subjected to measurement regarding visual acuity required in daily life, color discrimination, dark adaptation, glare, and the like. In the study of performing characteristics, 500 people are subjected to measurement regarding the scope of movement of upper limbs, their reach, and skillfulness with which the people can move fingers. When brightness, luminance, and contrast are caused to change relative to letters and background, aging is found to exert a great influence on the ease of reading, dark adaptation, and glare. As for the upper limb work range and reachability and the skillfulness in finger movement, it is found that aging narrows down the tolerant work area, lowers the working pace, and greatly affects skillfulness depending on the device operating method, all these disclosing actualities of difference attributable to age and sex. Concerning the device operating position and the ease of device operating force application, new measuring and evaluating methods are worked out, and correlations between the contents of operation and the operating position are seized. (NEDO)

  4. Combustion characteristics of stratified mixture. 1st Report. Measurement of mixture distribution in a constant-volume combustion chamber using laser-induced NO2 fluorescence; Sojo kongoki no nensho tokusei ni kansuru kenkyu. 1. Laser reiki NO2 keikoho ni yoru teiyo nenshokinai kongoki bunpu no keisoku

    Energy Technology Data Exchange (ETDEWEB)

    Fujimoto, M.; Nishida, K.; Hiroyasu, H. [Hiroshima University, Hiroshima (Japan). Faculty of Engineering; Tabata, M. [Mazda Motor Corp., Hiroshima (Japan)

    1996-06-25

    Laser-induced fluorescence from nitrogen dioxide (NO2) as gas fuel tracer was applied to determine mixture stratification in a pancake-type constant-volume combustion chamber using propane and hydrogen fuels. The second-harmonic output of a pulsed Nd: YAG laser was used as a light source for fluorescence excitation. The fluorescence images were corrected by a gated image-intensified CCD camera. The quantitative analysis of fuel concentration was made possible by the application of linearity between fluorescence intensity and NO2 concentration at a low trace level. The stratified mixture (center-rich or center-lean) was concentrically formed in the central region of the chamber by a jet flow from a tangentially oriented port. The concentration difference in the radial direction of the chamber decreased with time from the start of injection. The rate of decrease was faster for hydrogen than for propane. After 300 ms from start of injection, however, the time histories of the concentration difference were nearly constant for both fuels regardless of overall concentration. 10 refs., 16 figs., 1 tab.

  5. Discharge-current characteristics in UV-preionized Kr/He, F2/He gas-mixtures and KrF excimer laser gas. Shigaisen yobi denri Kr/He, F2/He kongo kitai hoden oyobi KrF laser reiki hoden no denryu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Nakagawa, N.; Kawakami, H.; Yukimura, K. (Doshisha University, Kyoto (Japan))

    1992-08-15

    In order to study effects of Kr and F2 on discharge characteristics of KrF excimer laser gas, gap phenomena in Kr/He and F2/He gas-mixtures were observed and discharge current (I[sub d]) was measured. In the range where Kr concentration was over 10% in Kr/He gas, in which production of filamentation as well as glow discharge started, discontinuous change in I[sub d] in the second or third half cycle was observed. According to the results of experiments and model analyses, it was considered that the discontinuity of the current showed the transition point to filamentation. When F2 concentration was in the range between 0.1 and 0.3% in F2/He mixture gas, filamentation and arc with glow were observed. Sine-waveform I[sub d] ended in the first half cycle, and began to flow again after cessation or had almost constant current due to arc and others. When F2 was over 0.4%, only are discharge was observed. It was thus found that F2 has a large effect on discharge characteristics of KrF laser gas. 18 refs., 9 figs.

  6. Boltzmann equation analysis of electrons swarm parameters and properties of excited particle number densities in Xe/Ne plasmas. Laser absorption effect; Xe/Ne plasma chudenshi yuso keisu narabi ni reiki ryushisu mitsudo tokusei no Boltzmann hoteishiki kaiseki. Laser ko kyushu koka

    Energy Technology Data Exchange (ETDEWEB)

    Uchida, S.; Sugawara, H.; Ventzek, P.; Sakai, Y. [Hokkaido University, Sapporo (Japan)

    1998-06-01

    Xe/Ne plasmas are important for plasma display panels and VUV light sources. However, reactions between electrons and excited particles in the mixtures are so complicated that influence of the reactions on the plasma properties is not understood well. In this work, taking account of reactions through which electrons are produced, such as cumulative and Penning ionization, and of transition between excited levels, the electron and excited particle properties in Xe/Ne plasmas are calculated using the Boltzmann equation. The ionization coefficient and electron drift velocity agreed with experimental data. The influence of laser absorption in Xe/Ne plasmas on the plasma properties is also discussed. 25 refs., 15 figs.

  7. Research on variable swirl intake port for high-speed multivalve DI diesel engine. Effects of port configuration on flow characteristics and swirl generation capacity; 4 ben kogata kosoku DI diesel engine no kahen swirl kyuki port ni kansuru kenkyu. Kyuki port haichi ga ryudo tokusei to swirl seino ni oyobosu eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Kawashima, J; Ogawa, H; Tsuru, Y [Nissan Motor Co. Ltd., Tokyo (Japan)

    1997-10-01

    In our previous papers, the variable swirl intake port system which can control a wide swirl ratio range (from 4 to 10) was described. This system consisted of two separate intake ports, one of them has a flow control valve for changing the swirl ratio. In this type of variable swirl system, some variations of port combination, port shape, and position can be designed. In this paper, the intake flow characteristics of various port combinations were analyzed on the basis of a steady-state air flow test and 3-dimensional computations. The results indicate that the total performance of the twin ports can be estimated from that of a single port in any kind of port combination. Some difference in flow patterns were found in a variety of port combinations even if each swirl ratio is similar. The selected port combinations in our previous study are good for a wide swirl control range. 11 refs., 9 figs., 1 tab.

  8. Study on behavior of car and driver in the very small commuter car made of FRP during collision using scale model. Under the consideration of thorax deformation of driver using airbag; FRP sei mokei ni yoru FRP sei chokeiryo jissha shototsuji no kuruma to join no anzensei ni kansuru kenkyu. Kyobu henkei tokusei wo yusuru join ni taisuru air gab no koka

    Energy Technology Data Exchange (ETDEWEB)

    Sakai, H; Morisawa, M; Yoshino, T [Musashi Institute of Technology, Tokyo (Japan); Sato, T [Keio University, Tokyo (Japan); Ishizuki, H [Satake Co., Tokyo (Japan)

    1997-10-01

    In this study, after having performed simulation which took up scale models substituting for full scale model of commuter car made of FRP, we carried out collision tests to barrier. Here, we made enquiries about the occupant safety by changing the collision speed and the deformation characteristics of the seat belt, during head-on barrier collision using one-fifth scale models. We sought for the occupant`s safe combinations among the deformation characteristics of airbag and the thorax deformation. In this case, the degree of the occupants injury were estimated using HIC values, 3msecG and maximum deformation of the thorax. 7 refs., 5 figs.

  9. R and D of suitable unit to heightening in grade of mobile wireless telegraphy system; Test on data transmission characteristics and research on transmission method. Ido musen system no kodoka ni tekigo kano na sochi no kaihatsu kenkyu; Deta denso tokusei shiken oyobi denso hoho no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Onigawara, Shuichi; Koyama, Masayoshi; Masunaga, Katsutoshi [Kyushu Electric Power Co., Inc., Fukuoka (Japan)

    1989-03-30

    In order to heighten the grade by the present mobile wireless telegraphy system, through the experimentation and research on both data transmission and error correction methods, both data and facsimile transmission were confirmed to be possible together with the following result: In the character transmission by a CPU connection and other encoded transmissions in which even an error by one bit considerably influences the contents of data, 1200bps, as able to be widened in service area, is profitable. While the data transmission in the mobile wireless telegraphy generates many errors due to phasing and noise along the propagation route. To attenuate those errors, error correction encoding is effectively applied with a correction method to be selected by kind of data. Further the 150MHz band, as more largely influenced by urban noise than the 400MHz band, narrows service area in the urban district. While the mobile wireless telegraphy is restricted in frequency band region. 12 refs., 26 figs., 9 tabs.

  10. Effects of sintering and paste-baking conditions on PTCR characteristic of (Ba,Sr)TiO{sub 3} vacuum-sintered compact added with TiO{sub 2}(Ti) powder; TiO{sub 2}(ti) fun tenka (Ba,Sr)TiO{sub 3} shinku shoketsutai no PTCR tokusei ni oyobosu shoketsu oyobi paste yakitsuke joken no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Kim, J.; Hayashi, K. [The University of Tokyo, Tokyo (Japan). Institute of Industrial Science

    1999-04-15

    The effects of sintering temperature (T{sub s}; 1,573 {approx} 1,748K) and time (t{sub s}; 0.6 {approx} 14.4ks) and paste-baking-temperature or heating temperature (T{sub b} or T{sub h}; 673 {approx} 1,273K; t{sub b} is 0.3ks) on PTCR characteristic were investigated for (Ba, Sr)TiO{sub 3} vacuum-sintered compact added with 3.9mass% TiO{sub 2}(Ti) powder of 12.5mass% TiO{sub 2}. The results obtained were as follows; (1) PTCR characteristic developed at all T{sub s} (t{sub s}=3.6ks, T{sub b}=853K). The electrical resistivity at room temperature ({rho}{sub rt}) showed a minimum value of 1.8 times 10{sup 2}ohmcenter dotcm and the {rho}{sub max}/{rho}{sub rt} showed a maximum value of about 10{sup 6} at 1,723K. (2)For all t{sub s} (T{sub s}=1,623K, T{sub b}=853K), PTCR characteristic developed. The {rho}{sub rt} showed a minimum value of 2.6 times 10{sup 3}ohmcenter dotcm at 7.2ks. (3) At T{sub b} above 823K (T{sub s}=1,623K, t{sub s}=3.6ks), PTCR characteristic developed. The {rho}{sub rt} showed a minimum value of 1.0 times 10{sup 3}ohmcenter dotcm. (4)The {rho}-T curve of (Ba, Sr)TiO{sub 3}+TiO{sub 2}(Ti) vacuum-sintered compact was affected more largely by T{sub s}, t{sub s} and T{sub b} than that of (Ba, Sr)TiO{sub 3} air-sintered compact. This was considered to be mainly due to the porous and fine gained microstructure in the former compact. (author)

  11. Report of fiscal 1997 R and D result on high temperature superconducting flywheel power storage. R and D of characteristic analysis of superconducting magnetic bearing; 1997 nendo koon chodendo flywheel denryoku chozo kenkyu kaihatsu seika hokokusho. chodendo jiki jikuuke no tokusei kaiseki no kenkyu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-05-01

    This paper explains fiscal 1997 results of the development of technologies for characteristic analysis of superconducting magnetic bearings (SMB), the development aimed at putting a 10 MWh high temperature superconducting flywheel power storage system to practical use. Following fiscal 1996, calculation programs were prepared for a load capacity and bearing constant (spring constant, damping constant) on an axial type SMB, with validity of the program examined through comparison with experimental values. A finite element method was applied to a complex magnetic field by a magnet arrangement devised for the purpose of improving load capacity, dividing a superconductor into divided sections so that the effect of a complex magnetic field distribution could be reflected, determining the magnetization generating in each divided section by using a two-dimensional Bean model, and developing a method for calculating load capacity of each divided section by a magnetic moment method. A program was completed for calculating the load capacity and bearing constant of the entire bearing in the axial type SMB. The calculated value of the load capacity and the bearing constant showed a superior agreement with the experimental value. (NEDO)

  12. Studies on high-performance ceramic heat exchanger for ultra high temperature. 2nd Report. Heat transfer of finned tube bundle immersed in fluidized bed; Chokoon`yo koseino ceramic netsu kokanki ni kansuru kenkyu. 2. Ryudo sonai no rin kangun no netsudentatsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Himeji, Y; Kumada, M [Gifu University, Gifu (Japan). Faculty of Engineering

    1998-03-25

    Studies were carried out to develop a high-performance ceramic heat exchanger for ultra high temperatures using a fluidized bed. In the former study, Heat transfer coefficient had been improved by applying fluidized bed to the heat exchanger for high temperature with smooth ceramic tubes. In this study, finned ceramic tubes were applied instead of smooth tubes for more improvement of heat transfer and experiments were performed on condition that the maximum bed temperature was 1100degC. Fluidization remained stable and the bed temperature uniform in the bed similarly as the case of smooth tube. A heat transfer coefficient of finned tube was evaluated and it was improved about 3 times as large as that of smooth tube. The performance of the heat exchanger was also evaluated using temperature efficiency and exergy efficiency. 4 refs., 11 figs., 1 tab.

  13. Properties of P/M forged Al-Si alloys made by premixed powders. 1. Influences of dispersion and sizes of proeutectic Si on wear resistance; Kongoho ni yotte sakuseishita Al-Si kei shoketsu tanzo gokin no tokusei. 1. Taimamosei ni oyobosu shosho Si no bunsan jotai to ryukei no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Ishijima, Z.; Ichikawa, J.; Sasaki, s.; Shikata, H. [Hitachi Powdered Metals Co. Ltd., Tokyo (Japan)

    1995-10-15

    Influences of dispersion and sizes of proeutectic Si on wear resistance of P/M Al-Si alloys using the prealloying method and premixing method have been investigated. As a result, discretely dispersed proeutectic Si showed excellent wear resistance in compassion with uniformly dispersed one. The cause is considered to be the unclosed Si soft phase which has been preferentially worn away, consequently acting on forming oil grooves and burying worn particles. Further more the existence of the optimum size of proeutectic Si on wear resistance was confirmed. In the case of finer particles, only Al-Si alloy (pin) was warned away substantially. On the other handgun the case of larger particles, both the Al-Si alloy (pin) and the mating malarial (steel disc) were excessively warned away. It is assumed therefore that the finer proeutectic Si particles are not effective as hard particles, on the contrary, larger proeutectic Si particles increase the abrasive wear against the mating material, and those buried into the mating material initiate wear of Al-Si alloy at the same time. 2 refs., 10 figs., 1 tab.

  14. Micromotors making use of electric field conjugate fluid (ECF). Proposition for Re-type ECF micromotor and study of its miniaturized version performance by experiment; Denkai kyoeki ryutai (ECF) wo oyoshita micromotor. RE gata ECF micromotor no teian oyobi bishoka tokusei no jikkenteki kento

    Energy Technology Data Exchange (ETDEWEB)

    Kondo, Y.; Yokota, S.; Nemoto, T. [Tokyo Institute of Technology, Tokyo (Japan); Otsubo, Y. [Chiba University, Tokyo (Japan); Edamura, K.

    1999-01-15

    A stator electrode (SE)-type ECF micromotor and a rotor electrode (RE)-type ECF micromotor are proposed, and have been tentatively constructed, both making use of ECF in which a jet flow is generated upon application of an electrostatic field across line electrodes. At the beginning, experiments are conducted to establish relationship between the impressed voltage and the number of revolutions in the RE-type micromotor that is expected to generate more torque than the SE-type micromotor. Next, the RE-type micromotor is miniaturized, and experiments are conducted to study the changes in power density and efficiency brought about by miniaturization. (translated by NEDO)

  15. Report on the results of the FY 1999 study on the standardization of the measuring/database method for data on human body shape characteristics; 1999 nendo shinki sangyo ikusei sokkogata kokusai hyojun kaihatsu jigyo. Shintai keitai tokusei data no keisoku database ka shuho ni kakawaru hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    The purpose of the present project is to conduct studies on three-dimensional human body measurement; the method of describing measurement results; the method of developing a database using measurement data; and the method of statistical data processing. Results of these studies are to be used to establish an international standard on three-dimensional human shape data. In the course of the project, the state of relevant studies conducted outside Japan was investigated. As a result, it has been found that studies on the method of processing three-dimensional human body shape data are being promoted independently by different research institutes. At present, it is impossible to build up a consensus on the method among these institutes. Additionally, standardizing the method may stifle the creativity of researchers. We have therefore decided to exclude the standardization of body shape data processing method from the scope of the project. Our conclusion is that the standard proposed in the project should be based on the human body shape data format, obtained through a study on the method of describing three-dimensional body shape data. And it should provide for a data format for three-dimensional human body measurement, which can store all data required for product of space design (e.g. data on human body sizes, landmarks and texture). According to our plan, this standard will be proposed in the form of a technical report, since it is yet too early to se out establishing the standard as an international standard. (NEDO)

  16. FY 1999 project on the development of new industry support type international standards. Standardization of methods to measure/evaluate characteristics of micro-machine use materials; 1999 nendo shinki sangyo shiengata kokusai hyojun kaihatsu jigyo seika hokokusho. Micro machine yo zairyo no tokusei keisoku hyoka hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Study was conducted with the aim of developing the standard tensile test method which enables the measurement/evaluation of mechanical properties of various kinds of thin film materials with thickness of 10{mu}m or below and width of 100{mu}m or below and of making it a draft for the international standards. The FY 1999 results were summarized. As to the Round Robin Test, Si test pieces were so fabricated by bulk micro-machining that comparisons in testing method can easily be made. Concerning the test machine, the measurement of deformation and strain of test pieces at the time of tensile test was made possible with the introduction of an optical microscope with interferometer and CCD camera for image processing. The measurement was also made possible of Young' modulus of polycrystal Si films of test pieces different in length. Relating to the optimization of standard test pieces, basic tests were carried out on the analysis of gradients of sputter thin films/the trend of grain formation state, measurement of residual stress of Ni plated films, etc. In the survey of the adaptability to standardization, it was found out that industrial circles in Europe and the U.S. are not interested in the standardization which produces no direct profits. (NEDO)

  17. 1998 Annual Study Report. Standardization of methods for evaluating characteristics of high-strength, large-diameter steel pipes for superhigh-pressure natural gas pipelines; 1998 nendo seika hokokusho. Chokoatsu tennen gas pipeline yo kokyodo daikei kokan no tokusei hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The pipelines for safely transmitting superhigh-pressure natural gas should have excellent characteristics. The steel pipe is required to have a sufficient toughness, more concretely Charpy impact-absorbing energy, to prevent propagating shear fracture characteristic of natural gas pipelines. Recently, the natural gas pipeline is increasingly required to have higher design pressures (15 Mpa or higher) and grade (X80 or higher). In order to develop the techniques for simulating crack propagation in the propagating shear fracture of natural gas pipe lines as part of the programs to cope with these trends, the 1998 efforts were directed to reviewing the research results obtained so far and analysis of the problems to be solved and tasks to be taken, based on which the analytical procedure for gas releasing phenomena during the fracture process was basically developed, the material characteristic data were collected by the laboratory scale toughness tests, and the preliminary tests with rupture disks were conducted to verify the above analytical procedure. These efforts have established the bases for evaluating the characteristics of high-strength, large-diameter steel pipes in the light of safety against fracture, and greatly advanced the program towards the final target of developing the international specification drafts for toughness. (NEDO)

  18. Improvement of tribological properties of magnetic tape by silica coating onto the Co-{gamma}-Fe{sub 2}O{sub 3} fine particles; Kobaruto hichakugata {gamma}-Fe{sub 2}O{sub 3} jisei biryushi no shisshiki shirika hyomen shori ni yoru jikitepu no suberi tokusei no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Hayashi, Kazuyuki; Iwasaki, Keisuke; Tanaka, Yasuyuki; Morii, Hiroko [Toda Kogyo Corporation, Hiroshima (Japan). R and D Center

    1999-01-10

    In order to improve the tribological properties of magnetic tape with Co-{gamma}-Fe{sub 2}O{sub 3} fine particles against a magnetic head, the silica coating onto the surface of Co-{gamma}-Fe{sub 2}O{sub 3} particles in aqueous slurry is investigated experimentally, and the kinetic friction coefficient of magnetic tapes prepared using the coated particles is measured. By this silica coating, the amount of myristic acid absorbed on the Co-{gamma}-Fe{sub 2}O{sub 3} particles tends to decrease and the kinetic friction coefficient of the magnetic tapes can be reduced from 0.4 to 0.2 because of the increase of the effective amount of myristic acid working as the lubricant when the magnetic tape is moving. Since the magnetic properties and the dispersibility of Co-{gamma}-Fe{sub 2}O{sub 3} pigment in the magnetic lacquer are not degraded by the silica coating, this coating method is expected to result in magnetic recording media with both good magnetic and low friction properties. (author)

  19. Improvement of slip property of magnetic tape by wet silica surface treatment on cobalt-coating type {gamma}-Fe{sub 2}O{sub 3} magnetic particles; Kobaruto hichakugata {gamma}-Fe{sub 2}O{sub 3} jiseibiryushi no shisshiki shirika hyomenshori niyoru jikitepu no suberi tokusei no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Hayashi, Kazuyuki; Iwasaki, Keisuke; Tanaka, Yasuyuki; Morii, Hiroko

    1999-02-05

    During the running of a magnetic taper coated with magnetic particles, sometimes troubles of the slip property between the magnetic tape and a magnetic head occur. In this research, silica coating onto the surfaces of magnetic iron oxide particles in water slurry was carried out, and a magnetic tape coated with these surface-modified particles was prepared so as to investigate the effect of the silica coating on the slip property of the magnetic tape. It was found that, for needle cobalt-coating type {gamma}- Fe{sub 2}O{sub 3}, the dynamic friction coefficient of the magnetic tape can be reduced from about 0.4 to abut 0.2 by coating silica at nm order. This was estimated that the adsorption amount of myristic acid as a lubricator component existing in the magnetic tape to the magnetic particles are reduced by the silica coating so that the amount of myristic acid effectively acting on the slip property of the magnetic tape surface is increased. Further, within the investigation scope of the present research, it has been clarified that the magnetic characteristics of the magnetic particles and coating dispersion property are not deteriorated by the surface treatment with silica, and a preferable magnetic recording medium retaining both magnetic characteristic and slip property can be obtained. (translated by NEDO)

  20. Fiscal 2000 achievement report on project for research and development of intelligent infrastructure creation and utilization technologies. Research and development project on high-speed deformation characteristics evaluation methods for metallic materials; 2000 nendo chiteki kiban sose riyo gijutsu kenkyu kaihatsu jigyo. Kinzoku zairyo no kosoku henkei tokusei hyoka hoho no kenkyu kaihatsu jigyo - Gyomu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    Efforts were made to develop methods for evaluating the characteristics of metallic materials experiencing high-speed deformation or impact deformation. The research was conducted by the research WG (working group) consisting of some participants of an international conference convened this fiscal year. The research result revealed that studies in Japan lopsidedly dealt with metallic materials at strain velocity of 10{sup 4}/second or less, such as steel, while many studies overseas dealt with materials other than metals at strain velocity over 10{sup 4}/second. The test and evaluation WG conducted high-speed tension tests for T6-treated aluminum alloys using the split Hopkinson bar method, hydraulic servo method, one bar method, and the sensing-plate method for measuring force, and the results were compared. It was then found that the one bar method produced disturbance more remarkably than the others and that the loading block structure and load rise time influenced the emergence of the peak load. The emergence of a peak load in the Hopkinson bar method or the one bar method had been predicted on the basis of the research conducted by the analysis group. (NEDO)

  1. Study on the improvement of high temperature mechanical properties of carbon fiber reinforced ceramics composites through texture and interface controls; Tanso sen`i kyoka ceramics fukugo zairyo no soshiki kaimen seigyo ni yoru koon rikigaku tokusei kaizen ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    To improve the tenacity and reliability of ceramics, the fiber reinforced ceramics composites compounding high strength long fibers and ceramics have been investigated. In this study, carbon fibers were selected as reinforcement fibers. The hexagonal boron nitride (hBN) was selected as a matrix having the plastic deformation performance. To intend to control the composition of the fiber/matrix interface, composites were created by adding polysilazane which was an organic Si (Si3N4) source. Relationships between the condition of interface of each phase and the high temperature mechanical properties were examined by changing the fabrication condition, to grasp the technical problems, such as the optimization of fabrication condition. Knowledge on the fabrication of long fiber reinforced ceramics composites was obtained including the arbitrary control technology of interface consistency of ceramics composites for super high temperature structures. The carbon fiber reinforced hBN composites developed in this study have excellent strength up to 1,500 centigrade and fracture energy, and they are new prospective materials as well as C/C composites. 4 refs., 37 figs., 13 tabs.

  2. Response characteristics of a long life type floating offshore airport in waves. 3rd Report. Response due to short waves and an attempt of active inclination control; Chojumyogata futaishiki kaijo kuko no harochu oto tokusei. Tanhachoiki no oto oyobi shisei seigyo no kokoromi

    Energy Technology Data Exchange (ETDEWEB)

    Hirayama, T.; Ma, N.; Nishio, O.; Sato, N. [Yokohama National University, Yokohama (Japan). Faculty of Engineering

    1996-12-31

    Notice was given on response characteristics in a short wavelength range of a large floating structure for an offshore airport consisting of semi-submersible replaceable type units, and influence of unit lacking. An attempt was also made on performing restoration of inclination change during unit lacking and suppression of long-cycle variation in waves by using air pressure control. The result of a numerical calculation based on a three-dimensional singular point method may be summarized as follows: mass force added vertically on columns in short wavelength range differs in the outer edges and the central part; relatively uniform values are shown in the central part; and interactive interference is recognized in wave forces in the vertical direction, but the influence therefrom decreases as the wave length decreases. Calculations on vertical movements and bending moments in waves were performed by using a mode synthesizing method. The calculations used fluid force which was calculated based on the three-dimensional singular point method utilizing symmetry with respect to each condition for a complete model plus unit lacking and unit lacking plus inclination control. As a result of verifying the calculations by using an experiment, relatively good agreement was achieved in either case. A high-frequency vibration experiment made clear the characteristics of elastic response in the short-wave length range. 14 refs., 14 figs.

  3. Method for estimation of the output electric power of PV module with considering environmental factors. Method for estimation of output using I-V curves; Kankyo inshi wo koryoshita taiyo denchi module no shutsuryoku keisanho. I-V tokusei curve ni yoru keisan

    Energy Technology Data Exchange (ETDEWEB)

    Yamagami, Y; Tani, T [Science University of Tokyo, Tokyo (Japan)

    1996-10-27

    Based on the basic quality equation of photovoltaic (PV) cell, a quality equation of PV module has been constructed by considering the spectral distribution of solar radiation and its intensity. A calculation method has been also proposed for determining the output from current-voltage (I-V) curves. Effectiveness of this method was examined by comparing calculated results and observed results. Amorphous Si (a-Si) and polycrystal Si PV modules were examined. By considering the environmental factors, differences of the annual output between the calculated and observed values were reduced from 2.50% to 0.95% for the a-Si PV module, and from 2.52% to 1.24% for the polycrystal Si PV module, which resulted in the reduction more than 50%. For the a-Si PV module, the environmental factor most greatly affecting the annual output was the spectral distribution of solar radiation, which was 3.86 times as large as the cell temperature, and 1.04 times as large as the intensity of solar radiation. For the polycrystal PV module, the environmental factor most greatly affecting the annual output was the cell temperature, which was 7.05 times as large as the spectral distribution of solar radiation, and 1.74 times as large as the intensity of solar radiation. 6 refs., 4 figs., 1 tab.

  4. Study on the optium operation of the solar assisted air-source heat pump system. Part 5. ; Fundamental performance of a SOL-AIR PANEL effected by environmental condition that can be controlled artifically. SOL-AIR heat pump system no saiteki untenho ni kansuru kenkyu. 5. ; Jinko kankyo joken hendo ni uoru shuhonetsu panel no kiso tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Nakajima, Y; Ohashi, K; Kasuya, A [Kogauin Univ., Tokyo (Japan); Shiraishi, K; Hino, T [Kajima Institute of Construction Technology, Tokyo (Japan)

    1990-12-06

    This paper follows the privious paper which reports about the experimental system of the solar air panel and the experimental conditions in the artificial environmental room. In this paper the basic performance of heat exchange of a solar panel related to the difference of the artificial enviromental conditions such as the wind speed, the wind direction, the radiation, and the dry or wet surface of the solar air panel, and the results of its analysis are presented. As a result of the experiment, the following were determined: wind direction affects the heat exchange characteristics of the solar air panel; the slits lead to improved heat conduction on both sides of the panel; and when the flat surface of the panel is wet the amount of all the heat exchange increases, due to increased air circulation and evaporation. It is possible to estimate the total quantity of heat exchange, and to determine the fundamental performance of a solar air panel. 7 refs., 10 figs.

  5. Effects of elasticity on the damping characteristics of viscous shearing damper and estimation curve for modal damping in stay cables with this type of dampers. Cable seishin'yo nensei sendangata damper no gensui fuka tokusei ni oyobosu banegosei no eikyo to sono sekkeiyo gensui hyoka kyokusen

    Energy Technology Data Exchange (ETDEWEB)

    Yoneda, M. (Kawada Industries Inc., Tokyo (Japan)); Shimoda, I. (Oiles Corp., Tokyo (Japan))

    1993-12-20

    Oil dampers and viscous shearing dampers have been used to control wind-induced cable vibrations of cable-stayed bridges. The damping addition efficiency in the case where only damping force of the viscous shearing damper is considered was discussed in the previous paper. In this paper, more precise estimation is done by also considering the spring elasticity of the damper. Arranging the results of an indoor excitation test on viscous shearing dampers using SA-P viscous body, an experimental equation to express the spring rigidity is derived. The spring elasticity becomes smaller with increasing temperature of viscous body, decreasing frequency, and increasing amplitude. Then, the damping addition effect is measured by installing the viscous shearing damper on the actual bridge cable, and is compared with the theoretical value resulting from the complex-eigenvalue analysis. Consequently, it is shown that the theoretical value is almost correspondent with the measured result through the analysis using equivalent coefficient of viscosity and equivalent spring constant, which are arranged in the experimental equation. Moreover, application examples of damping estimation curves for designing cables with dampers are given. 15 refs., 13 figs., 10 tabs.

  6. Aerodynamic stability study of a long-span prestressed concrete cable-stayed bridge. Aerodynamic behavior of edge box girder under uniform flow; Chodai PC shachokyo no taifu anteisei ni kansuru kenkyu. Ichiyoryuchu ni okeru edge girder keishiki no kuriki tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Nomura, T. [Obayashi Corp., Tokyo (Japan)

    1999-01-10

    In recent years, the construction of long-span bridges is on the increase. Prestressed concrete cable-stayed bridges are dynamically very efficient structures of relatively low cost that blend in well with the landscape. Maintenance is also easy. Consequently, the adoption of edge box girders for cable-stayed bridges is increasing worldwide, but problems related to the aerodynamic stability of the structure have emerged. The aerodynamic stability of edge box girders for a prestressed concrete cable-stayed bridge was investigated under uniform flow conditions by conducting several wind tunnel experiments. As a result, the section of the bridge deck was optimized to prevent torsional flutter within an angle of attack varying from -5 to +5 degrees. It is therefore possible to guarantee the aerodynamic stability of long-span prestressed concrete cable-stayed bridges. (author)

  7. Preparation of spherical fine particulate pigments within water-in-oil emulsions and their properties. (II). ; Formation mechanism and characteristic of spherical fine particulate pigment of tartrazine. W/O emulsion wo mochiita kyujo biryushi ganryo no chosei to seishitsu(dai 2 ho). ; Kiiro 4 go kyujo biryushi ganryo no seisei kiko to tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Imai, T.; Iwano, K.; Hotta, H.; Takano, S.; Tsutsumi, H. (Kao Corporation, Tokyo (Japan))

    1991-12-20

    The previous report explained that an excellent spherical particulate pigment with a grain size of 0.5 mm or less can be obtained by preparing multinuclear aluminum lakes from acidic dyes and multinuclear aluminum salt using water droplets in a W/O emulsion as reaction fields. This paper describes preparing pigments varying the charging concentrations of the pigments in a W/O emulsion and the droplet particle size to discuss the mechanism of forming the pigments. As a result, it was found that the particle sizes in the produced pigments have a clear correlation with the charging concentrations of the pigments and the droplet particle sizes in the W/O emulsion. A pigment produced in the W/O emulsion forms only in its own droplets, and reflects its particle sizes. Films dispersed with pigments having different particle sizes were prepared to discuss their tinting abilities, whereas it was clarified that the smaller the particle size, the higher the tinting ability and the higher saturation in colored paint films. 6 refs., 9 figs., 3 tabs.

  8. Fiscal 1998 intellectual infrastructure project utilizing civil sector functions. Research and development project on prompt-effect type intellectual infrastructure creation (Research and development concerning relations between sintered body textural structure and material characteristics in fine ceramics); 1998 nendo minkan no kino wo katsuyoshita chiteki kiban jigyo seika hokokusho. Sokkogata chiteki kiban sosei kenkyu kaihatsu jigyo (fine ceramics no shoketsutai soshiki kozo to zairyo tokusei tono kankei ni kansuru kenkyu kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Research and development was carried out involving fine ceramic sintered body textural structure evaluation methods for the development of process technologies for achieving higher quality and lower cost. Studies centered about a method for evaluating coarse pores and coarse grains in sintered bodies, relations between sintered body fracture strength and textural structure, and the standardization of evaluation methods. As the result, an evaluation method for observing pore structures in a sintered body flake specimen under an optical microscope and another for observing coarse grains under a polarization microscope were proposed. As for the effect of coarse defects on the fracture strength of ceramics, it was demonstrated experimentally and theoretically that coarse defects several tens of micrometers in size greatly affected the fracture strength. In the study of methods for sintered body grain size evaluation, findings were obtained about the processing of the specimen surface. (NEDO)

  9. Abstracts from the 15th International Myopia Conference

    Directory of Open Access Journals (Sweden)

    Alexandra Benavente-Perez

    2016-11-01

    Full Text Available Table of contents O1 Changes in peripheral refraction associated with decreased ocular axial growth rate in marmosets Alexandra Benavente-Perez, Ann Nour, Tobin Ansel, Kathleen Abarr, Luying Yan, Keisha Roden, David Troilo O2 PPARα activation suppresses myopia development by increasing scleral collagen synthesis--a new drug target to suppress myopia development Chanyi Lu, Miaozhen Pan, Min Zheng, Jia Qu, Xiangtian Zhou O3 Evidence and possibilities for local ocular growth regulating signal pathways Christine F Wildsoet O4 Myopia researches at Eye Hospital of Wenzhou Medical University Fan Lu, Xiangtian Zhou, Jie Chen, Jinhua Bao, Liang Hu, Qinmei Wang, Zibing Jin, Jia Qu O5 Color, temporal contrast and myopia Frances Rucker, Stephanie Britton, Stephan Hanowsky, Molly Spatcher O6 The impact of atropine usage on visual function and reading performance in myopic school children in Taiwan Hui-Ying Kuo, Ching-Hsiu Ke, I-Hsin Kuo, Chien-Chun Peng, Han-Yin Sun O7 Increased time outdoors prevents the onset of myopia: evidence from randomised clinical trials Ian G Morgan O8 Environmental risk factors and gene-environment interactions for myopia in the ALSPAC cohort Jeremy A. Guggenheim, Rupal L. Shah, Cathy Williams O9 Retinal metabolic profiling identifies declines in FP receptor-linked signaling as contributors to form-deprived myopic development in guinea pigs Jinglei Yang, Peter S. Reinach, Sen Zhang, Miaozhen Pan, Wenfeng Sun, Bo Liu, Xiangtian Zhou O10 The study of peripheral refraction in moderate and high myopes after one month of wearing orthokeratology lens Jun Jiang, Haoran Wu, Fan Lu O11 Axial length of school children around the earth’s equatorial area and factors affecting the axial length Kazuo Tsubota, Hiroko Ozawa, Hidemasa Torii, Shigemasa Takamizawa, Toshihide Kurihara, Kazuno Negishi O12 Processing of defocus in the chicken retina by retinal ganglion cells Klaus Graef, Daniel Rathbun, Frank Schaeffel O13 Blue SAD light protects