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Sample records for atarashii doshigen shori

  1. Development of novel processes for Cu concentrates without producing sulfuric acid; Hiryusan hasseigata no atarashii doshigen shori gijutsu no kaihatsu

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    Awakura, Y.; Hirato, T. [Kyoto University, Kyoto (Japan)

    1997-02-01

    Studies are conducted to develop a new wet method for copper concentrates to replace the conventional dry smelting method for the settlement of problems involving the processing of impurities for environmental protection. A specimen of pyrites polycrystals is subjected to leaching at 80 {degree}C in a strongly acidic cupric solution. Findings are that the element sulfur generated in this process does not impede leaching and only approximately 4% of the sulfur is oxidized into sulfur ions; that the presence of more than 2g/liter of bromide ions produced during bromine-aid leaching of gold changes the structure of sulfur for the inhibition of leaching; that circulation of a bromine-containing leaching liquid is not desired since even a small amount of approximately 0.02mol/liter inhibits the leaching rate. Controlled potential electrolysis is performed for the anode in an acid solution containing CuCl, NaCl, and NaBr, for the observation of oxidation/reduction potentials predicted by Nernst`s equation. It is then disclosed that bromine is more effective than chlorine in gold leaching and that the solution potential during leaching agent regeneration enables the monitoring of solution constitution. 2 refs.

  2. Development of novel processes for Cu concentrates without producing sulfuric acid; Hiryusan hasseigata no atarashii doshigen shori gijutsu no kaihatsu

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    Nakamura, T.; Noguchi, F.; Takasu, T.; Ito, H. [Kyushu Inst. of Technology, Kitakyushu (Japan). Faculty of Engineering

    1997-02-01

    In the refining process for the production of copper from pyrites, heat treatment is carried out in a neutral atmosphere so that part of the sulphur will be collected in the form of simple sulfur and that pyrites naturally low in reactivity will be made active. A basic study is also conducted of a very high speed electrolytic method. The chemical aspects of pyrites which are various in composition (mainly CuFeS2) are clarified by X-ray diffraction, and then is subjected to heat-treatment in a 773K-1073K argon atmosphere. There is a decrease in the amount of sulfur at a temperatures not lower than 973K. The X-ray main diffraction line splits for the emergence of some lower angle diffraction lines. The specimen is then subjected to a leach test in a copper chloride base liquor, to disclose that leachability grows remarkably higher in the presence of a great change in the X-ray diffraction lattice constant. An experiment follows in which an electrolyte is allowed to flow at a high speed for accelerating the rate of electrolytic refining in an effort to prevent the passivation of anode and deposition of dendrite on the cathode that is apt to occur when the current density is high. Passivation is prevented when the flow rate is 10m/min or higher in the vicinity of the anode surface for the formation of a smooth electrodeposited surface. 2 refs., 2 figs., 2 tabs.

  3. New trends in biotechnology. Biotechnology no atarashii choryu

    Energy Technology Data Exchange (ETDEWEB)

    Karube, I. (The University of Tokyo, Tokyo (Japan). Research Center for Advanced Science and Technology)

    1993-11-30

    This paper focuses on application of the recent biotechnology and introduces its new trends. What has triggered the boom in the application is when the technology has been applied to medicines in the 1970's. Beginning with insulin and interferon, various fibrinolytic agents including tPA and monoclonals have been put on markets one after another in 1991. Progress in humangenomic analysis has led to implementation of gene therapies and diagnoses using genes on gene diseases. Sweeteners used in a large quantity in the foodstuff field are fructoses made by isomerizing glucose produced by using enzymatic bioreactors. Needless to say about production of amino acid, organic acids, saccharides, antibiotics, steroids, and nucleic acid-based compounds by using enzymatic bioreactors, chemicals including acrylic amide from acrylonitrile, enzyme detergents, and bio-herbicides are available commercially. Progress in the technology is seen in all of the fields, including electronics industry and environmental preservation. 6 refs., 4 figs.

  4. Control system for garbage disposition. Gomi shori seigyo system

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    Matsumoto, S.; Kaneko, H. (Fuji Electric Co. Ltd., Tokyo (Japan))

    1993-06-10

    This paper introduces the latest incinerator instrument control system (IICS), and pneumatic refuse transportation and optimal operation systems for incineration plants. Garbage disposition facilities have introduced discrete control systems and a centralized control system using computers, and structured an overall incineration plant control system containing incineration facilities, electric power generation facilities, and other facilities. The IICS comprises softwares packaging control functions required particularly for garbage disposition and a control system mounting the softwares. The optimal incineration plant operation system governs control data in each plant to execute efficient drives and operations mutually in various plants, and reflects the data to plant operation programs. The pneumatic refuse transportation system has large-diameter pipelines laid in a limited area to collect refuses pneumatically through refuse chutes installed in the area to transport them to a refuse collection center. 4 refs., 8 figs.

  5. Leading research on brainware; Nokino joho shori no sendo kenkyu

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    NONE

    1996-03-01

    Leading research on brainware is conducted to realize the engineering information processing based on the learning, memorization, association, intuition, value judgment, and motivation which are activities of human brains. For the highly integrated information society at the 21st century, it will be essential to establish human-like information processing technology which is considered to be difficult with the conventional computers. The R and D theme for this technology will focus on the development of novel devices and systems by eliciting the principles and key roles of information processing functions of the brain and in living organisms from both viewpoints of the science and engineering and the brain information science. It is considered that important research targets are in elucidating brain functions and the modeling and developing novel devices and systems, such as brain information architecture, neural devices, neural networks, and man-machine interface. Technical trend surveys in the USA, the UK, and Germany were also conducted. 347 refs., 58 figs., 7 tabs.

  6. Coin sorting unit; Koka ikkatsu tonyu shori unit

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    Oyabu, H.; Nishiyama, T.; Iijima, S. [Fuji Electric Co. Ltd., Tokyo (Japan)

    1999-08-10

    There are promising demands for barrier-free vending machines which can easily be used by the aged and the handicapped as well as ordinary people. Fuji Electric had developed an advanced unit for throwing in coins for the new hearty series that can smoothly be used by the aged and the handicapped. Its main advantages are (1) two or more coins can be thrown in together, (2) The port for putting in coins and the port for taking out change are of unified construction and simply adjoin each other, (3) Directional signs in braille are added. (author)

  7. Synthesis of new erodable polymers response to environmental stimuli; Atarashii kankyo chowagata bunkaisei plastic no kaihatsu

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    Kato, M.; Nagasaki, Y. [Science University of Tokyo, Tokyo (Japan). Faculty of Industrial Science and Technology

    1997-02-01

    This report relates to the designing of functional materials that decompose in response to various signals. A derivative of {alpha}-bromomethylstyrene is caused to act on the living anions of {alpha}-methylstyrene for the synthesis of a pyrolytic polymer having unsaturated groups at its terminals. The terminal double combinations of this polymer split under the influence of heat, acid, or base for depolymerization which is quantative, and the decomposition temperature may be controlled by replacing terminal phenylallylic groups with methyl groups or phloro-groups. Furthermore, a novel polythyramine polymer is synthesized with its principal chain constituted of NCH2CH2Si, the principal chain easy to disintegrate when exposed to an electron beam. The polymer is signal-responsive and may be patterned by use of an electron beam. As a temperature-responsive polymer with the hydrolytic feature controlled, poly(thyroxy ethylene glycol) is obtained from a derivative of diaminosiloxane and oligo-oxyethylene. This is a high-mobility, temperature-responsive material whose hydrolysis may be controlled. 3 refs., 2 figs.

  8. Polymeric foaming in the new century; Atarashii jidai no happo seikei gijutsu

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    Oshima, M. [Kyoto Univ., Kyoto (Japan). Dept. of Chemical Engineering

    2000-10-20

    Industrial polymeric foams were developed near the middle of the twentieth century. A chemical blowing agent or a physical blowing agent was used to liberate a gas for expanding polymers by foams. Before the 1980, CFC was used because of its high solubility, volatility and nontoxic nature. However, its stability and reactivity with ozone raised substantial concern about ozone depletion. Since the late 1980s, responding the Montreal Protocol, polymeric foam producers started researches and made big efforts to switch CFC to friendly alternative blowing agents. In mid 1980s, the microcellular foaming created by super critical CO{sub 2} was presented in the United State. The central idea of microcellular foams was to create a large number of bubbles, smaller than the pre-existing flaws in a polymer product. Since then, a large number of innovative applications have been imagined and taken people's attentions because of the unique properties of microcellular foams. This article addresses the sate of the art of the foaming and discusses what we could elucidate so far and what we should know in the future to assure more success in foaming technology in the 21 century. (author)

  9. Reactivities of acid and/or tetralin pretreated Wandoan coal for a Curie point flash pyrolysis; Sanzen shori, tetralin yobaimae shori Wandoan tan no kyusoku netsubunkai

    Energy Technology Data Exchange (ETDEWEB)

    Kishino, M.; Sakanishi, K.; Korai, Y.; Mochida, I. [Kyushu University, Fukuoka (Japan). Institute of Advanced Material Study

    1996-10-28

    Discussions were given on effects of acid pretreatment and tetralin swelling in Wandoan coal on a Curie point flash pyrolysis (which used a Curie point pyrolyzer). Residue yield loss effects were obtained at 3.9% in hydrochloric acid pretreatment, and 6.2% in acetic acid pretreatment. The effects of tetralin swelling pretreatment were compared in the similar manner in terms of the residue yield loss. The effects were 4.0% in untreated coal, 2.0% in the hydrochloric acid pretreatment, and 0.6% in the acetic acid pretreatment. It is thought that components that can be activated by acetic acid have already been activated, but the remaining components would not be activated by tetralin. Average microporosity (area) in the remaining particle as a whole shows very little difference both in acetic acid pretreated coal and untreated coal. However, with the acetic acid pretreatment, pores smaller than 4{mu}m{sup 2} disappeared, and pores as large as 205 to 411{mu}m{sup 2} increased largely. This phenomenon was observed as an increase in foaming degree under microscopic observation, even if the average microporosity remains equal. Thermoplasticity of the coal increased, and so did volatilization reactivity as a result of the acetic acid pretreatment, resulting in appearance of a large number of large pores. 6 refs., 2 figs., 2 tabs.

  10. Suppression of numerical dispersion using FD modified operators; Atarashii sabunho no enzanshi wo mochiita suchi bunsan no yokusei

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    Takeuchi, N.; Geller, R. [The University of Tokyo, Tokyo (Japan). Faculty of Science

    1996-05-01

    The author, et al., have developed a formal evaluation theory for errors in numerical solutions and derived on the basis of this theory the conditions that a modified error minimizing operator should satisfy. A modified operator was derived for a calculus of finite difference in the time domain making use of this error evaluation theory. In this study, a modified operator was derived for O (2, 2) in the calculus of finite difference in time, and the operator was used in the calculation for the old and new methods about 1-dimension inhomogeneous media, and the two were quantitatively compared in CPU time and calculation accuracy. The calculation used 500 space grids and 5000 time grids. With the ratio of the time grid gap and space grid gap are kept constant, both CPU time and calculation accuracy were in proportion to the square of the number of grids. It was found in view of the result that the new method, as compared with the old method, needs only approximately 1/20 of CPU time in performing calculations of the same precision and that it maintains calculation accuracy that is approximately 20 times higher in the said CPU time. 4 refs., 2 figs., 1 tab.

  11. Thermophilic methane fermentation system for garbage; Namagomi no koon metan hakko shori system

    Energy Technology Data Exchange (ETDEWEB)

    Togo, Y.; Tatara, M.; Goto, M. [Kajima Corp., Tokyo (Japan)

    1999-09-30

    Installed in two places, M and V stores, was 'Metakles', a system for treating garbage discharged from a complex building. Analysis was made on the data for the continuous operation of about one and a half years heretofore since the completion of the plant in the latter half of 1997, with an evaluation made on the performance of this system. It is a general garbage treating equipment constituted of a pre-treating process containing a high pressure sorting and pulverizing mill, a thermophilic methane fermentation process and a film separating type activated sludge secondary treatment process, with the maximum planned throughput of 1,500kg/d in the case of the system for the M store. According to the operation data so far, this system has continuously achieved approximately not less than 80% of the methanization ratio of thrown-in organic matters, 85% of solubilization ratio of thrown-in solids, and 95% of rejection ratio of thrown-in fats and oils. Garbage is sometimes short of micronutrient required for maintaining activity of methane bacteria; however, the situation can be avoided by periodically adding metallic salt in a trace quantity. High fatty acid contained in fish, beef, pork, etc. is also known for their inhibitive effects against methane bacteria, but no problem was found at all in the oil concentration up to about 16,000mg/L as n-hexane extract concentration. In the case where the daily processing quantity of garbage is 1,000kg/d on the average, a bio-gas containing methane gas for an average of 66% is generated in an approximate quantity of 200m{sup 3} daily, while thermal energy contained in this bio-gas is nearly equivalent to 100L of kerosene. In the case of installation in the M and V stores, the bio-gas generated is reused as fuel for a hot water boiler, with a part of the hot water utilized for heating a bio reactor and with the most effectively supplied as washing water for containers and the like in the garbage treating equipment of the stores. (translated by NEDO)

  12. Present status of collection and destruction of CFCs; Furon kaishu / bunkai shori no genjo

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    Fukunaga, T. [Idemitsu Kosan Co. Ltd., Tokyo (Japan)

    1998-05-01

    `Vienna Convention of Ozonosphere Protection` was adopted in 1985, and based thereon, `Montreal Protocol on Substances Destroying Ozonosphere` was adopted in 1987 to establish concrete regulating provisions including a reduction schedule. In this paper, kinds of CFCs under regulation, movement of CFCs decomposing technology, accumulation amount of CFC, status of collection of CFCs and social subjects thereof are described. In respect to the treating methods for decomposing CFCs, seven methods recommended by the United Nations Environmental Project (UNEP), the cement kiln method and rotary kiln method encouraged by the Environment Agency of Ministry of International Trade and Industry of Japan are introduced. Then, the practice status of collection of CFCs is described. Many difficulties are piling up in the collection of CFCs including how to raise collection fee, how to make capital flow transparent and legalization thereof, and supervision to illegal dumping by consumers or collectors. 17 refs., 2 figs., 6 tabs.

  13. Application of adsorption in water purification treatment; Kyuchaku no josui shori eno oyo

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    Sakoda, A. [Tokyo Univ. (Japan)

    1997-08-05

    It is necessary to know that how much the organic materials that are to be removed by adsorption can be adsorbed by active carbon when thinking of water treatment using active carbon adsorption. The adsorption equilibrium relation in general is strongly correlated with the pore distribution and specific surface area of active carbon, however, it is not related directly with the particle form, powder or fiber. Equilibrium adsorption amount against organic material concentration can be decided by the solution of adsorption equilibrium relation and by using this, maximum theoretical amount of water treated per unit amount of activated carbon can be obtained. Adsorption rate is also an important adsorption characteristic similar to adsorption equilibrium relation. In this report, fundamentals of liquid phase adsorption operation using active carbon are described and further, comparatively new type of water treatment using active carbon fiber, biological active carbon and so forth is given. Recently, new materials like virus, pesticides and so forth have been appeared one after another to be treated. In future, development of new process using new type of adsorbents along with the combination of film separation is predicted, however, demand of active carbon may not be reduced so far. 13 refs., 3 figs.

  14. Introductory study of brain function data processing; No kino joho shori no sendo kenkyu

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    NONE

    1998-03-01

    An investigational study was conducted of the brain function aiming at developing an interface with the same function as humans have. In the study, the most up-to-date information/knowledge and future problems were examined on brain measurement, brain modeling, making a model an element, and the brain function data processing system. As to the brain measurement, the paper took up the multielectrode simultaneous measuring method and the optical multipoint measuring method as an invasive measuring method, and the functional magnetic resonance imaging, near-infrared spectroscopy, magneto-encephalography, and electro-encephalography as a non-invasive measuring method. Relating to the brain modeling, studies were made on senses of sight and smell, the movement control and the learning. As to making a model an element, how to make the modeled function a chip on silicone for example becomes the problem. Reported were two reports on making the sense of sight an element and one report on making the parallel dispersed processing mechanism of brain an element. About the brain function data processing system, three reports were made on the present situation, matters in question, and the future development of the system in the case of catching data processing as a system taking a step ahead from making the model an element. 250 refs., 74 figs., 11 tabs.

  15. Surface improvement of asbestos by wet process. Shisshiki shori ni yoru asbesto no hyomen kaishitsu

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    Yasue, T.; Kojima, Y.; Obata, H.; Ogura, T.; Arai, Y. (Nihon University, Tokyo (Japan). Faculty of Science and Engineering)

    1991-09-01

    The eluting process of each ion in asbestos was pursued up to the decomposition by processing with hydrochloric acid and phosphoric acid to verify the acid processing condition making asbestos harmless and holding the fibrous structure. The decomposition of asbestos is significantly affected by the eluting condition. When treated by 3N hydrochloric acid, Mg{sup 2+} in asbestos elutes perfectly after 7days at 20 centigrade and after 30 minutes at 100 centigrade, remaining amorphous silica of comparatively high purity. When asbestos fiber which was acid-processed to exchange almost all sites with Ca{sup 2+} ion after Mg{sup 2+} in the first to fifth layers eluted, is put in Na{sub 2}HPO{sub 4} solution, hydroxyapatite is formed on the surface. When this asbestos is hydrothermally processed in the Ca(OH){sub 2} solution adjusted so that the atomic ratio of Ca{sup 2+}/Si{sup 4+} to silicate radical remained on the surface becomes 0.8, calcium silicate hydrate is formed on the surface. 22 refs., 12 figs.

  16. Relationship between stacking process and resolution; Jugo shori to bunkaino ni kansuru kiso kenkyu

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    Matsushima, J.; Rokugawa, S.; Kato, Y. [Geological Survey of Japan, Tsukuba (Japan); Yokota, T.; Miyazaki, T. [The University of Tokyo, Tokyo (Japan). Faculty of Engineering

    1996-10-01

    This paper evaluates influences of stacking of incident angles against the reflecting surface on the resolution. Basic equations for evaluating the influences were deduced. A simple evaluation method has been provided using these equations. The present evaluation method is considered to be useful for acquisition design, processing, and interpretation of data as an indicator. According to the equations introduced in this study, there are some demerits for stacking traces whose incident angles were large. A total reflection region often appears due to the decreased resolution, and the vertical resolution decreases prior to stacking. Occasionally, it is not effective to remove traces having large incident angles from the viewpoint of resolution. In practice, the selection of most suitable trace through trial and error is not easy due to difference in individual regions. An evaluation method must be discussed, by which the optimal trace can be selected automatically during the data processing. 6 refs., 15 figs.

  17. Leading research on brain functional information processing; No kino joho shori no sendo kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    This research aims at searching the concept of an information processing device with a fully different architecture from a previous ones based on the study on human brain function, sense and perception, and developing the basic fabrication technology for such system, and realizing the human-like information processing mechanism of memorization, learning, association, perception, intuition and value judgement. As an approach deriving biological and technological models from experimental brain studies, the model was derived from the brain functional information processing based on brain development/differentiation mechanism, the control mechanism/material of brain activities, and the knowledge obtained from brain measurement and study. In addition, for understanding a brain oscillation phenomenon by computational neuroscience, the cerebral cortex neural network model composed of realistic neuron models was proposed. Evaluation of the previous large-scale neural network chip system showed its ability of learning and fast processing, however, the next-generation brain computer requires further R and D of some novel architecture, device and system. 184 refs., 41 figs., 2 tabs.

  18. 3D pre-stack time migration; Kiruhihoffuho ni yoru sanjigen jugo mae jikan migration shori

    Energy Technology Data Exchange (ETDEWEB)

    Nakajima, Y.; Matsuoka, T. [Japan Petroleum Exploration Corp., Tokyo (Japan); Tsuru, T. [Japan National Oil Corp., Tokyo (Japan)

    1997-05-27

    This paper reports pre-stack migration in elastic wave exploration as to its algorithm and examples of processed data. The time migration processing hypothesizes that seismic waves propagate linearly. It calculates travel time by dividing the sum of the straight distance from a vibration transmitting point to an image point and the straight distance from the image point to a vibration receiving point with RMS velocity given as a parameter. To maintain the relative relation of amplitude sizes, the signal on an elliptic body is made smaller in inverse proportion to the size of that elliptic body. With regard to apparent interval of input trace as seen from the reflection surface, or with regard to density, the signal is made smaller by cos{theta} times. While this program deals with three-dimensional migration, its output turns out as an arbitrary two-dimensional plane. The program requires a huge amount of data processing, whereas a method is used, that the input trace is divided, each group is processed by using separate computers, and the results are summed up. 3 refs., 4 figs.

  19. Travel time and ray path computation in 2D-heterogeneous structures; Fukinshitsu kozo ni okeru jishinha soji oyobi hasen no atarashii keisan hoho

    Energy Technology Data Exchange (ETDEWEB)

    Fujie, G.; Kasahara, J.; Sato, T.; Mochizuki, K. [The University of Tokyo, Tokyo (Japan). Earthquake Research Institute

    1996-05-01

    Methods were studied for determining the initial travel time and ray paths with stability when an non-linear travel time inversion is performed in an inhomogeneous structure. The travel time calculation was based on Faria and Stoffa`s method. First, the 2-dimension space was sectioned by grids, and `slowness` was assigned to all the lattice points. Starting from the vibration source, travel time at each lattice point is sequentially calculated. This method calculates travel time for any structure without breakup. In this study, an algorithm more sophisticated than the method of Faria, et al., was developed, and the improvement of travel time calculation accuracy led to the accurate determination of the direction of incidence into the lattice points during the initial motion. The calculation of ray paths was effected by tracing back from the receiving points the incidence into the lattice points or by following back the ray paths to the vibration source. This method performs stable calculation for a heavily inhomogeneous structure and, with the algorithm being simple, do the parallel programming as well. 1 ref., 6 figs., 1 tab.

  20. New style of system business and reengineering of software engineering process; Atarashii system jigyo style to software sekkei no gyomu kakushin

    Energy Technology Data Exchange (ETDEWEB)

    Minami, A.; Muto, K.; Dotemoto, A. [Toshiba Corp., Tokyo (Japan)

    1999-09-01

    Toshiba is promoting a new style of system business by business process reengineering (BPR), with the sales, engineering, and software development divisions acting in concert. Virtual task force teams are changing the styles of sales and engineering. They are supported by an intranet-based system for information management and C Solution, a new system architecture. (author)

  1. Development of the hull inspection robot (RTV-SHIP); Sentai kensayo suichu robot (RTV-SHIP) no kaihatsu (atarashii sentai kensaho no ichiteian)

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    Nakata, Y.; Otsuka, M.; Ozawa, H.; Konosu, M. [Mitsui Engineering and Shipbuilding Co. Ltd., Tokyo (Japan)

    1997-08-01

    A compact and lightweight underwater RTV robot (RTV-SHIP) that enables the remote sensing in the double-shell structure of a tanker and the six-freedom motion control was developed based on the technology of the conventional portable underwater robot. The motion performance test in a water tank showed that the RTV-SHIP can freely access the manhole in the double-shell structure of a tanker and completely satisfies the thrust and swing force required for movement and measurement in a tank. The in-tank function confirmation test also shows that the main measurement items such as positioning in the tank, large deflection of panels, and plate thickness have a satisfactory measurement accuracy and that the RTV-SHIP has the same tone discrimination function as for a visual check. The method of inputting the tank shape during measurement and miniaturizing the recording unit should be improved until the RTV-SHIP is put to practical use. This system can be widely used by improving the above points according to the result of a future measurement test for the actual ships. 1 ref., 9 figs.

  2. Proposal and study of a long-span composite cable-stayed bridge with new hybrid girder; Atarashii gosei kozo shuketa wo mochiita chodai fukugo shachokyo no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, K.; Hishiki, Y.; Furuichi, K. [Kajima Corp., Tokyo (Japan)

    1999-09-30

    A hybrid or mixed structure (composite structures) are a matter of increasing concern which takes in each advantage of steel and concrete. A field of bridges is no exception, with the plan and construction carried out for the new type of composite bridge, such as a composite cable-stayed bridge and a composite extra dose bridge as a long span bridge, and a composite truss bridge and a corrugated steel plate web bridge as a medium-span bridge, with technological development becoming active in this field. In such a technological trend, a hybrid two-girder structure was devised, a structure consisting of a concrete filled steel pipe for a girder and a precast (PC) floor plate for a floor board, as the girder structure of a long-span cable-stayed bridge in the subject research; also, applicability was examined using, as an example, the composite cable-stayed bridge with hybrid girders employed for the span. This paper reports the result of the analysis of the entire system, the analysis made for the purpose of examining the characteristic and the feasibility of this hybrid girder. The analysis revealed the structural feasibility of the long-span composite cable-stayed bridge using two hybrid girders of concrete-filled steel pipes thus devised. (NEDO)

  3. Development of newly engineering technology based on computer analysis for dust diffusion; Funjin kakusan kaiseki gijutsu wo kihon to shita atarashii engineering gijutsu no tenkai

    Energy Technology Data Exchange (ETDEWEB)

    Ishii, K.; Murahashi, Y.; Kawakami, H.; Tanaka, K. [Nippon Steel Corp., Tokyo (Japan)

    1997-07-30

    Nippon Steel has made a comprehensive survey of the space environment designing technology that can precisely cope with the needs required for a space in a plant in a very wide range from the ventilation problem in steel mill to the turbulence problem in semiconductor plant, through accomplishing the development of computer analysis technology for dust diffusion that can estimate and control `air flow` and `dust movement` in an electric angstrom [furnace plant]. This paper describes the basic concept for establishing the computer analysis technology for dust diffusion and the concrete measures to solve accompanying problems, and further enters into details how the new engineering technology has innovated technical measures to solve problems, the new engineering technology which introduces a concept of both estimation and control to attain objects such as to curtail the equipment cost and so by estimating the `air flow` and `dust movement` to create both a new flow and movement depending on needs. 3 refs., 20 figs., 8 tabs.

  4. Development of new type of nonlinear optical materials with a function of ultrafast optical modulation; Chokosoku hikari reiki hencho kino wo motsu atarashii hisenkei kogaku zairyo no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Sakaguchi, H. [Shizuoka University, Shizuoka (Japan). Research Institute of Electronics

    1995-12-15

    Ultrafast modulation of second harmonies from a Langmuir-Blodgett film consisting of a ruthenium complex was demonstrated for the first time. The mechanism of the modulator of SHG intensity on laser irradiation was ascribed to the change of molecular hyperpolarizability of the ruthenium complex on going from the ground state to the excited state. 9 refs., 12 figs.

  5. Development of new finite element by source method. 2nd Report. Plate bending element; Source wo mochiita atarashii yugen yoso no kaihatsu. 2. Itamage yoso

    Energy Technology Data Exchange (ETDEWEB)

    Neki, I.; Tada, T. [Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan)

    1996-12-31

    This paper reports a method to develop a new finite element by source (FES) for a two-dimensional plane problem and a three-dimensional solid problem as a method to analyze ship body structures. The paper describes development of a plate bending element by using a similar method, and the fundamental principle thereof. The present method can prepare a finite element of an arbitrary shape by simply providing a contact point only on a boundary. It can also derive good calculation accuracy with less number of contact points and elements. These facts are shown by examples of analyses on a square plate, a triangle plate and a semi-circular plate. Particularly, since a plate bending problem has a large order of differential calculus in a governing equation, this method being a semi-analytical method derives a result with very good accuracy even with less number of contact points. A hypothetical boundary method or a hypothetical electric charge method presents not a very high accuracy even if a large number of contact points are provided. This is because the method hypothesizes only a bending moment vertical to the boundary, but does not consider a source of the moment relative to the boundary. In contrast, the present method hypothesizes both of bending and twisting as the sources, hence its accuracy is better than with the above two methods. 5 refs., 11 figs., 7 tabs.

  6. Desiliconization process of hot metal at blast furnance casthouse. Koro chusho ni okeru yosen no tatsukei shori

    Energy Technology Data Exchange (ETDEWEB)

    Uchiyama, T.; Takeda, K.; Taguchi, S.; Shinohara, K.; Kato, H.; Matsumoto, T. (Kawasaki Steel Corp., Tokyo (Japan))

    1990-09-01

    The Kawasaki Steel has developed several types of desiliconization facilities at blast furnace runner and applied to blast furnaces according to their individual local conditions. In response to the restriction in the maximum feed rate and mass velocity of desiliconization reagent by the slag foaming and splash formations for the desiliconization method without slag removal at the casthouse, three methods, i.e., a top feed method, a blasting by one stage, and a blasting by two stages were developed, according to increases in the required feeding rate of the desiliconization reagent. In the case that the desiliconization slag is removed at the blast furnace runner, it was demonstrated that the injection method by use of an immersion lance was effective because of its high oxygen efficiency in desiliconization. An simulation model of desiliconization was also developed, and the effect of the lance shape on oxygen efficiency in desiliconization was evaluated. On the basis of the simulation results, the oxygen efficiency in desiliconization was able to be increased to 60% by the improvement of the injection conditions. 8 refs., 18 figs., 3 tabs.

  7. Treatment wastewater containing dyestuffs by adsorption technology; Kyuchaku gijutsu ni yoru senryo gan`yu haisui no shori

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, H. [University of Osaka Prefecture, Osaka (Japan). Faculty of Engineering

    1997-04-10

    For treatment of wastewater containing dyestuffs, the adsorption/separation recovery method using chitosan fiber was studied. Acid orange as acid dye and brilliant yellow as direct dye were used in experiment, and the pH, inorganic electrolyte and temperature dependency of dye adsorption into chitosan fiber were studied together with the dissolution curve of dyestuffs by NaOH aqueous solution. The result showed the possibility of adsorption, dissolution and concentrating recovery of dyestuffs. This method has the following features: (1) Efficient separation of dyestuffs and water + dyeing auxiliaries from dyeing wastewater, (2) recycling of water and dyeing auxiliaries in dyeing process, (3) high- concentrating recovery of dyestuffs by NaOH aqueous solution and recycling of fibers, (4) separation of dyestuffs from NaOH aqueous solution by cooling and salting out of desorption solution, (5) recycling of NaOH aqueous solution in desorption process, and (6) the possible closed system discharging no new wastewater in wastewater treatment. 7 refs., 6 figs., 1 tab.

  8. Anaerobic-aerobic small scale on-site wastewater treatment process. Kenkiter dot koki shori hoshiki jokaso

    Energy Technology Data Exchange (ETDEWEB)

    Inamori, Y. (National Institute for Environmental Studies, Tsukuba (Japan))

    1991-01-05

    As a part of the developmental project of advanced domestic wastewater treatment facilities, the following three types of small scale on-site anaerobic-aerobic wastewater treatment processes with removal functions of both BOD and nutritive salts were developed with targets of 10mg/l in BOD, 10mg/l in T-N and 1mg/l or less in T-P: an anaerobic-aerobic bio-filter treatment process with the adjustment function of hydraulic loading (A), an anaerobic-aerobic immobilized microorganisms packed fluidized bed-biofilm process (B) and a circulated anaerobic-aerobic fixed bed process (C). As the results of demonstration tests of each process using real wastewater, each process could achieve nearly the desired end, and the A process was superior in removal functions of organic substances, nitrogen and phosphorus. The C process was superior in stable removal functions of BOD and nitrogen as well as its easy production and low cost. 7 refs., 7 figs., 1 tab.

  9. On the relationship between the irregular reflector and the data processing by stacking; Hanshamen keijo to jugo shori ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Matsushima, J.; Yokota, T.; Miyazaki, T. [Geological Survey of Japan, Tsukuba (Japan); Rokukawa, S. [The University of Tokyo, Tokyo (Japan). Faculty of Engineering

    1996-05-01

    An examination was made on the possibility of data processing by stacking with scattered waves assumed in a seismic exploration analysis (diffraction stacking method). In the examination, a CDP stacking method and the diffraction stacking method were compared through numerical experiments in the case of imaging a flat reflection surface and an irregular reflection surface. As a result, it was revealed that the CDP stacking method for stacking mirror reflection waves was merely a processing to raise S/N ratio while the diffraction stacking method for stacking with scattered waves assumed contained a migrational aspect as well as an aspect to raise S/N ratio. Consequently, it was shown that, if an oscillator was properly arranged, a structural imaging was possible not by the shape of a reflection surface but by the diffraction stacking method. Additionally, the diffraction stacking method revealed that the imaging effect varied by frequency with the stacking effect decreased at high frequencies, and that no stacking effect decreased at low frequencies but resolution lowered in horizontal direction. 4 refs., 8 figs.

  10. Research and development of jellyfish compaction technology; Kurage gen'yoka shori gijutsu ni kansuru kaihatsu kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Uemura, N. [Kansai Electric Power Co. Inc., Osaka (Japan)

    1999-12-10

    An on-site test is conducted of devices for reducing in a short time the volume of jellyfish that flow into power plants. There are three methods to reduce the volume of jellyfish by separating water from them, which are heating, pressing, and chemical. The chemical treatment is not an object of this test because it is expected that the volume reduction rate by this method will be too low. For the achievement of a reduction rate of 80%, the two methods, physical and crushing, are compared at the laboratory level. It is found that the crushing method is superior because it can dispose of jellyfish in a shorter time. Using this method, the crushed jellyfish is separated into drain and bubbles, the latter containing jellyfish fragments. An on-site test is conducted using a general-purpose crusher. The relationship between the filter diameter (1-5mm) and the separation rate is investigated, and it is found that separation proceeds more rapidly when the filter diameter is smaller. It is found that the addition of a certain chemical accelerates the separation. COD (chemical oxygen demand) is 300-490mg/l in the drain, and BOD (biological oxygen demand) 400-500mg/l, with COD having increased by approximately 20%. A study is scheduled to be conducted using an experimental apparatus. (NEDO)

  11. Development of advanced waste treatment system 'Aqua-Flora'. Osui kodo shori system (Aqua Flora) no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Toda, Y. (Penta-Ocean Construction Co. Ltd., Tokyo (Japan)); Hirose, Y. (Fuso Construction Industrial Co. Ltd., Kagawa (Japan))

    1993-03-15

    A combined waste water treatment system has been developed which is suitable for a small-scale waste water treatment facility, has excellent nitrogen and phosphorus removing function, and enables easy surplus sludge drawing. In this system, anaerobic and aerobic active sludge processing is performed by a batch type facility, and a coagulation pressure flotation separator is provided to improve phosphorus removing and solid-liquid separating performances. Some methods have been invented so as not to increase the cost excessively due to the design. Even if sludge runs out of the biological reaction tank, effluent water quality is not at all influenced and high MLSS concentration is maintained because of the high solid-liquid separation function of the coagulation pressure flotation separator, allowing the use of a more compact biological reaction tank. What is more, the burden of the maintenance control work has been alleviated very much. Surplus sludge is scraped up by a scraper as the floating sludge in the pressure flotation separator. 4 figs., 2 tabs.

  12. Data processing for the mise-a-la-masse survey; Ryuden den`iho tansa no data shori

    Energy Technology Data Exchange (ETDEWEB)

    Hashimoto, K.; Mizunaga, H.; Ushijima, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering; Kaieda, H. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1996-10-01

    Data processing method was studied for mise-a-la-masse survey. Mise-a-la-masse method using wells as current sources measures resultant ground surface potential difference, and detects underground local resistivity anomaly. To extract resistivity anomaly largely different from surroundings, the anomaly is extracted as difference between the estimated value of regular resistivity structure (background) and potential difference or apparent resistivity. The following three approximations were attempted to estimate the background: the theoretical equation assuming isotropic homogeneous resistivity structure, that assuming horizontal multi-layered structure and the exponential function of distance from linear electrode for apparent resistivity, and these were compared with each other by numerical model experiment. The data processing method which determines the resistivity structure of the background and the residual of apparent resistivity distribution by inversion analysis using the above second equation, could precisely extract local resistivity anomaly, and estimate the depth distribution of resistivity. 5 refs., 10 figs., 2 tabs.

  13. Structural changes in deashed coals induced by heat treatment; Kanetsu shori ni yoru dakkaitan no kozo henka

    Energy Technology Data Exchange (ETDEWEB)

    Sugano, M.; Sekita, M.; Muramatsu, Y.; Mashimo, K.; Wainai, T. [Nihon University, Tokyo (Japan). College of Science and Technology

    1996-10-28

    Change in structures of 3 kinds of coals with different coal ranks and their deashed coals was studied by heat treatment below 200{degree}C. In experiment, crushed Adaro, Taiheiyo and Huaibei coals below 200mesh and their deashed coals were used as specimens. The coal and deashed coal specimens dried in vacuum at 110{degree}C for 3 hours were filled into an autoclave, and the heat-treated coal specimens were prepared by holding them under initial nitrogen pressure of 2kg/cm{sup 2} at a fixed temperature for 30min. Extraction using pyridine as solvent, volumetric swelling using methanol or benzene as solvent, and measurement of the amount of carboxyl and phenolic hydroxyl functional groups were conducted for these coal specimens. The experimental results are as follows. Huaibei coal has developed aromatic ring structure, and its structure is hardly affected by heat treatment. The oxygen containing functional groups decrease by heat treatment over 100{degree}C in Adaro coal and 150{degree}C in Taiheiyo coal, and PS, MQ and BQ also decrease due to aggregation between molecules. 5 refs., 2 figs.

  14. Waste gas treatment technology at steelmaking plants. Seitetsu setsubi ni okeru hai gas shori gijutsu ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, M.; Shimizu, K.; Deshimaru, K.; Watari, S. (Nihon Univ., Narashino, Chiba (Japan). Coll. of Industrial Technology)

    1992-11-30

    A variety of furnaces are employed for steelmaking. The waste gases from these furnaces are used as fuel gases or flared to the atmosphere. For the enhancement of energy efficiency at these plants and the improvement of environment, it is essential to remove the impurities contained in the waste gases, such as soot, dust, NOx and SOx with high efficiency at the lowest possible cost. In coke oven and sintering furnace, soot and dust consisting of sulphuric element, cyanogenic element and fume of alkali metals as main constituents are the subject of treatment, because these elements were contained in the raw materials. And, in blast furnace and LD converter, soot and dust are the subject of treatment because the materials have already been treated under high-temperature and the waste gases contain little chemical impurities consequently. On the other hand, in various combustion furnaces, purified by-product gases, such as the above mentioned BFG (blast furnace gas), LDG (LD converter gas) and COG (coke oven gas), etc., are used frequently and NOx generated by the high-temperature combustion is often the subject of treatment. In this report, the waste gas treatment technology developed by Nippon Steel Corporation for these various furnaces was described. 10 figs., 2 tabs.

  15. Biological treatment of dialysis wastewater by PUF fluidized-bed; PUF ryudoshoho ni yoru toseki haisui no seibutsugakuteki shori

    Energy Technology Data Exchange (ETDEWEB)

    Toyoda, A. [Envisys Ltd., Hyogo (Japan); Kanki, T.; Momoda, S.; Marukami, M.; Maeda, Y. [Himeji Institute of Technology, Hyogo (Japan)

    1994-09-15

    For the purpose of high-efficiency microorganism treatment in bicarbonate type saccharated dialysis wastewater, a study has been made on a fluidized-bed method using porous polyurethane foam (PUF) as a carrier. Discussions have been given especially on the effects of substrate load, carrier size, and the number of carrier cells on the treatment characteristics from the initial stage of cultivation to the steady-state operation. The carried and suspended microorganisms grew while showing oscillatory variation. The larger the number of carrier cell becomes, the more the carried microorganism quantity becomes, and the less the suspended microorganism quantity becomes. A carrier with a size of 10 mm forms more stable living organism phase than that with a carrier with a size of 5 mm. While the carried and suspended microorganism quantity increases with the load, the lower the load, the carried microorganism ratio increases. With regard to the microbial phase immediately after the substrates having flown in, the dispersive bacteria and the Colpidum group grow preferentially. In the steady-state region, the flock-forming bacteria and the Vorticella group grow preferentially. The carried microorganisms disperse over the whole carrier during the initial stage, form flock-formed lumps thereafter, and grow concentratedly in the vicinity of the carrier surface in the steady-state region. 10 refs., 7 figs., 2 tabs.

  16. Rolling contact fatigue strength of successive austempered ductile cast iron; Chikuji austemper shori kyujo kokuen chutetsu no korogari hiro kyodo

    Energy Technology Data Exchange (ETDEWEB)

    Fujita, T. [Yamaguchi University, Yamaguchi (Japan). Faculty of Engineering; Ogi, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering; Sawamoto, A. [Yamaguchi Univ., Yamaguchi (Japan). Faculty of Education

    1998-04-25

    The holding time of austempered spheroidal graphite cast iron material is allowed to vary in heat treatment especially at the lower bainite transformation zone during the process for the preparation of specimens different from each other in the amount of {gamma}-pool, and the specimens are tested for their rolling contact fatigue strength. The effects of the amount of {gamma}-pool, roughness of the bainite structure, and work-hardening, on the rolling fatigue strength are also studied. Findings obtained as the result of experiment are stated below. In the case of an austempered ductile cast iron specimen containing a {gamma}-pool amount that occupies a high rate of 6.52%, the rolling fatigue withstanding limit exhibits a relatively high level of 1310MPa, which becomes approximately 1245MPa when the holding time is extended in the lower bainite transformation zone. The limit rises to approximately 1320MPa at a stage where the {gamma}-pool virtually disappears. In a successive austempering treatment process that aims at improving on machinability and at allowing sufficient fatigue strength to be maintained, it is necessary to allow the holding time in the bainite zone to be long enough for the {gamma}-pool to disappear and for the lower bainite structure to grow sufficiently. 5 refs., 10 figs., 4 tabs.

  17. Aspirin content determination with control systems by image processing technology. Gazo shori gijutsu wo katsuyoshita jozai aspirin kensa sochi

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, K. (Lion Corp., Tokyo (Japan))

    1990-08-05

    An inspection apparatus for aspirin tablets utilizing image processing technology was developed. One side of a tablet consists of aspirin layer and another side consists of alkiline layer. The alkaline layer is opaque at all but the aspirin layer is translucent. Image of overall configuration of the tablet is taken in CCD camera by illumination from all surrounding sides. The area is measured by using these images. Then, when switching off the surrounding illumination and illuminating the aspirin side, only aspirin side layer shines. The area is determined by taking the image in CCD. Aspirin content is calculated by the ratio of overall images to aspirin image and the predetermined tablet weight. Tablets of different aspirin content were prepared, and the content determined by this method and the chemically determined contents were compared. High correlation was found between both contents, indicating the validity of the image processing method. When the aspirin content is out of 330 {plus minus} 10mg, the controlling mechanism works, by which unmanned operation will be possible. 8 figs.

  18. On the relationship between stacking process and resolution. 2; Jugo shori to bunkaino ni kansuru kiso kenkyu. 2

    Energy Technology Data Exchange (ETDEWEB)

    Matsushima, J.; Rokugawa, S.; Kato, Y. [The University of Tokyo, Tokyo (Japan). Faculty of Engineering; Yokota, T.; Miyazaki, M. [Geological Survey of Japan, Tsukuba (Japan)

    1997-05-27

    With respect to concept of resolution in seismic exploration using the reflection method, detailed considerations were given on processes of forming the resolution as a result of arranging observation points at vibration transmitting and receiving points. In the discussion, numerical experiments were carried out, in which the scattering stacking process is applied in a model having one scatterer existing in homogeneous media. The experiments investigated an imaging formation process of the scatterer when arrangement of the vibration transmitting and receiving points were changed from a coarse condition to a dense condition while the number of transmitting and receiving points is being increased. Resolution is created if waveforms having finite frequencies are used as input, and the imaging is performed by utilizing the limited number of vibration receiving and transmitting points. If the concept of equi-travel plane is used under these conditions, the equi-travel planes perform negation with each other, and it was indicated that visual resolution is expressed by how good the negating effect is. It was discovered that such concept of the resolution is quite ambiguous in terms of engineerings. 2 refs., 17 figs.

  19. Survey report for fiscal 1998. Survey of trends of new CO{sub 2} fixation technology using bacteria and algae (II); 1998 nendo chosa hokokusho. Saikin sorui wo riyoshita atarashii nisanka tanso kotei gijutsu no doko chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The trend of technology is surveyed from a standpoint that, in the process of CO2 fixation using microbes for the production of useful substances, it is essential, in view of income/outgo balance and economy, to utilize their catalytic function. The survey centers about the feasibility of the utilization of organic wastes, cellulose wastes in particular, as an energy source. Special attention is paid to the energy of artificial light and laser beams. From a point of view that it is important to suppress cell multiplication and to effectively utilize only catalytic activity for the production of useful substances, the cell division mechanism of the Corynebacterium is analyzed, and the findings are compiled to facilitate the study as to whether the division may be controlled. A report is also prepared on the metabolic mechanism of a photosynthesizing bacterium that is judged to be the most promising species. Reference is made to aerobic and anaerobic bacteria. Shown are the organic compounds that are formed by CO2 gas fixation thanks to microbial or enzymatic reactions. To emphasize their importance as an energy source and to explain the conversion of biomass into useful substances, the technology and economy of conversion into fuel compounds are surveyed. The production of ethanol out of organic wastes is evaluated in the way of LCA (life cycle assessment). (NEDO)

  20. Survey report of FY 1997 on the trends of novel CO2 fixation technology using bacteria and microalgae; 1997 nendo chosa hokokusho (saikin sorui wo riyoshita atarashii nisanka tanso kotei gijutsu no doko chosa)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    For this survey, the latest technology trends relating to microbial functions are summarized to recover and effectively utilize CO2, typical greenhouse effect gas, using microbial functions. Systematic survey and analysis are conducted concerning the microorganisms useful for fixing CO2, CO2 uptake mechanism during the microbial reactions, utilization methods of solar light and useful energy sources except solar light, highly efficient production of useful materials, and usage of produced useful materials. Research has concentrated on use of biological activities for this purpose through design of bioreactors using microorganisms (bacteria and microalgae) for efficient CO2 fixation. For the process to have net CO2 fixation as assessed by its life cycle and to make the process economically feasible, it is essential not only to fix CO2 merely in the form of biomass but in addition to convert it to useful materials by the catalytic activities of the organisms. Three categories were set for the survey, i.e., microorganisms with CO2 fixation ability, available energy for CO2 fixation, and target CO2 fixation products. 169 refs., 49 figs., 14 tabs.

  1. Transformation hardening by linear-polarized laser beam. Report 2. Development of novel laser beam shaping optics and its applications to materials processing; Chokusen henko reza wo mochiiru hentai koka. 2. Atarashii reza shaping kogakukei no kaihatsu to sono oyo

    Energy Technology Data Exchange (ETDEWEB)

    Miyamoto, I.; Maruo, H. [Osaka Univ., Osaka (Japan)

    1994-08-05

    Shape variable laser beam shaping optics for which linear polarized beam is utilized is applied to the hardening of carbon steel by CO2 laser beam to analyze the absorptivity. In addition, linear polarized beam is irradiated to inclined materials for laser hardening to analyze the depth of hardening and the distribution of temperature. The absorptivity of random polarized beam by the bare specimens is as low as 20%. It is as high as above 40% with the graphite coated specimen, but is nearly constant with no dependence on the angle of incidence. The absorptivity in p-polarization increases with the increase in the angle of incidence. When linear polarized beam is used, the total efficiency of the bare specimen becomes high by about 1.5 times that of the graphite coated specimen subjected to random polarized beam. Hardening of bear material by laser beam is quite possible when p-polarization is employed. An approximation equation is derived with which the temperature distribution and hardened depth can be obtained easily if beam distribution and absorptivity are given, and it is applied to the evaluation of laser hardening of inclined specimens using linear polarized beam. 22 refs., 11 figs., 1 tab.

  2. Application of new analytical techniques to the order-disorder transformation in Ni-Mo alloys; Ni-Mo gokin no kisoku-fukisoku hentai ni okeru atarashii kozo kaiseki no kokoromi

    Energy Technology Data Exchange (ETDEWEB)

    Oki, K.; Hata, S.; Kuwano, N. [Kyushu University, Fukuoka (Japan)

    1997-09-20

    This paper presents the analytical example of the ordering process of order-disorder transformation in Ni-Mo alloy using recent experimental techniques. Monte Carlo simulation clarified the fact that the ordering process in Ni4-Mo alloy is largely affected by short range interaction in the early stage of ordering, and forms D1a, D022 and Pt2Mo structure units with a similar atomic pair correlation. The ordering process is largely affected by long range interaction with an advance of ordering, and develops only D1a structure most stable in energy. In order to check the existence of SRO (short range order) structure obtained by Monte Carlo simulation, the analysis of high-resolution TEM images under SRO condition was carried out using the imaging plate recently developed for TEM. The analytical result showed that the observed N2M3 pattern is derived from not always the existence of N2M3 structure but superimposition of D1a, D022 and Pt2Mo structure units. 19 refs., 4 figs.

  3. New ion generation method with SF{sub 6} plasma. Direct ionization of refractory materials; SF{sub 6} purazuma wo mochiita atarashii ion seiseiho. koyuten busshitsu wo chokusetsu ion ka

    Energy Technology Data Exchange (ETDEWEB)

    Okoshi, K.; Saito, Y.; Tajima, S. [Japan Atomic Energy Research Institute, Tokyo (Japan)

    1999-11-01

    For many refractory materials, vapor pressures rise due to fluoridation. For example, a vapor pressure of B is almost zero at room temperature, whereas a vapor pressure of BF{sub 3} is 10{sup 5}Pa or greater. A SF{sub 6} plasma method is capable of directly generating a solid fluoride in an ion source and obtaining its plasma. In order to ionize refractory materials such as niobium, boron, silicon and the like, the present authors have developed a new ion generation method using a stable solid sample and SF{sub 6} gas. Further, the present method was employed to successfully and greatly extending the filament life of the ion source. The plasma method can be used widely not only for a Freeman ion source but also for an ion source using plasma such as electron cyclotron resonance (ECR) ion source. Since the refractory material ions can be stably supplied at a great intensity for a long time, they are expected to be used in corrosion-resistant materials or materials having new functions such as optical switching materials. (NEDO)

  4. FY1995 study of low power LSI design automation software with parallel processing; 1995 nendo heiretsu shori wo katsuyoshita shodenryoku LSI muke sekkei jidoka software no kenkyu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The needs for low power LSIs have rapidly increased recently. For the low power LSI development, not only new circuit technologies but also new design automation tools supporting the new technologies are indispensable. The purpose of this project is to develop a new design automation software, which is able to design new digital LSIs with much lower power than that of conventional CMOS LSIs. A new design automation software for very low power LSIs has been developed targeting the pass-transistor logic SPL, a dedicated low power circuit technology. The software includes a logic synthesis function for pass-transistor-based macrocells and a macrocell placement function. Several new algorithms have been developed for the software, e.g. BDD construction. Some of them are designed and implemented for parallel processing in order to reduce the processing time. The logic synthesis function was tested on a set of benchmarks and finally applied to a low power CPU design. The designed 8-bit CPU was fully compatible with Zilog Z-80. The power dissipation of the CPU was compared with that of commercial CMOS Z-80. At most 82% of power of CMOS was reduced by the new CPU. On the other hand, parallel processing speed up was measured on the macrocell placement function. 34 folds speed up was realized. (NEDO)

  5. Effect of low temperature plasma treatment on dimensional stability of wool fabrics. Yomo orimono no sunpo fuanteisei ni oyobosu teion plasma shori no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Goto, T.; Wakita, T. (Kyoto Institute of Technology, Kyoto (Japan). Faculty of Engineering and Design); Hosotani, T. (Unitika Research Laboratories Inc., Osaka (Japan))

    1991-07-10

    This report describes the effect of low temperature plasma treatment, which has been developed for fabric processing, on wool fabrics. In the experiment, wool fabrics were treated by low temperature plasma using O{sub 2}, Ar, CH{sub 4}, CHF{sub 3}, and CF{sub 4}. Low temperature plasma treatment did not influence moisture regain of wool fabrics, but influenced hygral expansion. There was no difference in the area of low humidity, however, dimensional change was restricted by half in the area of high humidity. Low temperature plasma treatment also improved felt shrinkage caused by home laundering. Moreover, it was found that friction coefficient of wool fabrics increased remarkably after low temperature plasma treatment. Therefore, the subsequent reactive silicone elastmer softening agent was used for finishing process after low temperature plasma treatment. As a result, wool fabrics hardened by low temperature plasma treatment regained their soft condition and washing resistant shrinkage percentage was also improved. Thus this treatment was proved to be used practically. 15 refs., 6 figs., 5 tabs.

  6. Effect of synthetic detergent and soap on the waste-water treatment. Gosei senzai oyobi sekken no haisui shori ni oyobosu eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Inamori, Y. (national Institute for Environmental Studies, Tsukuba (Japan)); Takamatsu, Y. (University of Tsukuba, Tsukuba (Japan))

    1993-05-01

    This paper describes the effect of surfactants on purification capability and living life phases in the living life membrane method and the activated sludge method as biological waste water treatment methods. As a result of treating artificial waste water in an immersion hearth process of the living life membrane method, it was found that LAS added concentration at 50 mg/l or higher would not affect noticeably the quality of water treated under a steady-state operation, but that at 100 mg/l has aggravated the treated water quality by increasing COD. In the case of soaps, the COD in the treated water has aggravated when the added concentration is 70 mg/l or higher. The result of discussing the activated sludge process using urban sewage water indicated that COD in the treated water shows higher value for synthetic detergents than for soaps at the detergent added concentration of 140 mg/l or higher, having affected adversely the treated water quality. An activated sludge treatment process was operated to identify the effects of synthetic detergents and soaps on living life phases in the activated sludge and living life membranes. The result suggests that either the LAS added system or the soap added system presents no problems in a long-time aeration, while activated sludge aerated for the standard period of time has a possibility of abnormally proliferating filamentous microorganisms that can cause bulking in the soap system. 14 refs., 3 tabs.

  7. Flame-Retarding of Cotton/Polyester Blended Yarn Fabrics Using Two-Component Sequential Treatment; Nidankai shori ni yoru men/poriesuteru konboshifu no nannenka

    Energy Technology Data Exchange (ETDEWEB)

    Kubokawa, Hiroo. [Textile Research Institute of Gunma Prefecture, Gunma (Japan)

    1999-01-10

    Cotton/polyester (C/P) blended yarn fabrics were treated with several flame retardants used for poly (ethylene terephthalate)(PET) using pad-dry-cure method. The relationships between the chemical structures of the flame retardants and their partition into PET fibers were investigated. When tetrabromobisphenol A (TBP-A) was tested, the amount of sorption increased with increasing concentration of TBP-A in treating acetone solution, and reached 4.0%o.w.f. (% on the weight of the fibre) at 10 wt%. THis treated fabric was again treated with a flame retardant for cotton, Pyrovatex CP New, which contains dimethyl 2-(N-hydroxymethylcarbamovl)ethylphosphonate as a main component. However, sufficient flame retardancy was not obtained. The second partition of TBP-A to cotton during heating was thought to lower the sorption efficiency of Pyrovatex CP New. Based on this assumption, for the case of the two-component sequential treatment, the Pyrovatex CP New treatment, which generates covalent bonds with hydroxy groups of cellulose, should be carried out prior to the TBP-A treatment. When a C/P blended yarn fabric was treated with Pyrovatex CP New and then with TBP-A, the amount of sorption of Pyrovatex CP New was 9.6%o.w.f. and the amount of sorption of TBP-A was 4.6%o.w.f. The limiting oxygen index of the treated fabric was 27.2%, a sufficient value for flame retardancy. Fromthis result, it was concluded that the practica flame-retardant finishing of c/p blended yarn fabrics could be carried out by using a simple finishing machine. (author)

  8. Reduction of nitrogen in the excretion on Japanese flounder using Ulva and Capitellid; Anaaosa to itogokai ni yoru hirame haisetsubutsuchu no chisso shori

    Energy Technology Data Exchange (ETDEWEB)

    Honda, H.; Kikuchi, K.; Sakaguchi, I. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1997-03-01

    To develop the culture residue treatment technique using aquatic organisms, the ammonia and nitrate uptake rates of seaweed Ulva and the nitrogen reduction rate of polychaeta annelid Captella sp. with organic sediment predaceous ability were examined in the excretion of Japanese flounder. Nitrogen uptake rate of Ulva was affected by water temperature. It was highest at 20degC, followed at 15degC and 25degC in the order. It was not affected by light intensity between 1500 and 6000 lux. Ammonia and nitrate uptake rates by Ulva were estimated to be 28.2 and 14.6 {mu}g-N/g/h at 20degC under 3000 lux, respectively. Proportion of feces excreted from Capitellid to ingested sediments was 0.38. At 25degC, Capitellid population of one thousand individuals ingested-N at the rate of 24 mg-N/day, and excreted the feces-N of Capitellid at the rate of 7 mg-N/day. About 70% of nitrogen in the sediment was reduced through this process. 15 refs., 9 figs., 13 tabs.

  9. Effect of partial solution treatment on martensitic transformation of 12%Cr steels; 12% Cr ko no martensite hentai ni oyobosu bubun yotaika shori no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Tsuchiyama, T.; Takai, S. [Kyushu University, Fukuoka (Japan)

    1996-12-01

    When high chromium martensitic steels are subjected to partial solution treatment in (austenite+M23C6, carbide) two -phase region, not only the coarsening of austenite grains is effectively suppressed by insoluble-carbide particles, but also martensitic structure, which has formed during cooling, is refined through the treatment. In this study, the mechanism of refining of martensitic structure was discussed in Fe-12%Cr-C ternary alloys by investigating the relation between Ms temperature and solution treatment conditions, and the effect of insoluble-carbide particles on the substructures such as martensite-lath or -block. The Ms temperature of steels with full solution treatment simply depends on the content of C and Cr, but that of steels with partial solution treatment is dependent on the effective chemical composition of matrix, which is evaluated by taking the amount of C and Cr in insoluble-carbide away from their total content. Refining of martensite-block structure within grains is not caused directly by insoluble-carbide particles, but done indirectly through the refining of austenite grain size. While, on the martensite-lath structure, insoluble-carbide particles supply nucleation sites for laths, and work also as obstacles for growing laths. As a result, martensite-laths in steels with partial solution treatment are divided finely by insoluble carbide particles, and the arrangement of laths is tend to be confused. 14 refs., 10 figs., 1 tab.

  10. Peak load forecasting using multiple years data with trend data processing techniques; Tanendo data no trend shori ni motozuita saidai denryoku yosoku

    Energy Technology Data Exchange (ETDEWEB)

    Haida, T.; Muto, S.; Takahashi, Y.; Ishii, Y. [Tokyo Electric Power Co. Inc., Tokyo (Japan)

    1997-07-20

    This paper presents a regression based daily peak load forecasting method using multiple years data with trend cancellation and trend estimation techniques. Daily peak load heavily depends on temperature in daytime and is influenced by the other weather factors such as humidity. Since a characteristic of the load is varying, peak loads just before a forecasting day are more significant for the forecasting. The regression model can represent relationships between these weather factors and peak loads. However, the forecasting model is sometime not adequate for precise load forecasting. The regression model is well matched with the late data, but the model causes large forecasting errors in transitional seasons because of seasonal change of load characteristics. In order to forecast precisely through a year, a method of using seasonal or whole year data in past years is proposed. In this paper, two kinds of trend data processing techniques are described. The first is trend cancellation. The second is trend estimation. The trend cancellation technique removes annual load growth by means of division or subtraction processes with morning load on the forecasting day. The trend estimation technique estimates the trend between the forecasting year`s load and the past year`s load by using the variable transformation techniques. Performance of the both techniques verified with simulations on actual load data- is also described. 12 refs., 8 figs.

  11. Relative amplitude preservation processing utilizing surface consistent amplitude correction. Part 3; Surface consistent amplitude correction wo mochiita sotai shinpuku hozon shori. 3

    Energy Technology Data Exchange (ETDEWEB)

    Saeki, T. [Japan National Oil Corporation, Tokyo (Japan). Technology Research Center

    1996-10-01

    For the seismic reflection method conducted on the ground surface, generator and geophone are set on the surface. The observed waveforms are affected by the ground surface and surface layer. Therefore, it is required for discussing physical properties of the deep underground to remove the influence of surface layer, preliminarily. For the surface consistent amplitude correction, properties of the generator and geophone were removed by assuming that the observed waveforms can be expressed by equations of convolution. This is a correction method to obtain records without affected by the surface conditions. In response to analysis and correction of waveforms, wavelet conversion was examined. Using the amplitude patterns after correction, the significant signal region, noise dominant region, and surface wave dominant region would be separated each other. Since the amplitude values after correction of values in the significant signal region have only small variation, a representative value can be given. This can be used for analyzing the surface consistent amplitude correction. Efficiency of the process can be enhanced by considering the change of frequency. 3 refs., 5 figs.

  12. Effect of heat treatment changes on swelling treatment of coal; Sekitan no bojun shori sayo ni oyobosu netsushori henka no eikyo

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-10-28

    Discussions were given on effects of heat treatment at relatively low temperatures as a pretreatment for coal liquefaction on coal swelling and hydrogenolysis reaction. Taiheiyo coal was heated to 200{degree}C for one hour as a pretreatment. The attempted heating methods consisted of four steps of rapid heating (6.7{degree}C/min)quenching (20{degree}C/min), rapid heating/natural cooling (0.7{degree}C/min), heating (1.0{degree}C/min)/quenching, and heating/natural cooling. The swelling treatment was composed of adding methanol benzene into heat treated coal, and leaving it at room temperature for 24 hours. The hydrogenolysis was carried out by using a tetralin solvent and at an initial hydrogen pressure of 20 kg/cm{sup 2} and a temperature of 350{degree}C and for a time of one hour. Hydrogenolysis conversion in the heat treated coal was found lower than that of the original coal because of generation of liquefaction inactive components due to thermal polymerization. When the heat treated coal is swollen by using the solvent, gas yield from the hydrogenolysis reaction decreased due to gas suppression effect, and the conversion was lower than that of the original coal. Heat treatment suggests densification of the coal structure. Swollen coal shows no conspicuous difference in the heat treatment methods against the hydrogenolysis due to the swelling effect. 3 refs., 5 figs., 1 tab.

  13. Explosive treatment of Illinois No.6 coal with a mixed solvent of water and cyclohexanol; Mizu-cyclohexanol kongo yozai ni yoru Illinois tan no bakusai shori

    Energy Technology Data Exchange (ETDEWEB)

    Hashimoto, T.; Takada, H.; Asami, K.; Yano, M. [Osaka City University, Osaka (Japan). Faculty of Engineering

    1996-10-28

    Coal was treated at high temperature under high pressure in the binary system mixed solvent of water and organic solvent, and the solvent treated coal was liquefied. When the treated coal was treated again by the explosive method in which high temperature and pressure were released immediately, the oil yield was higher than that by the normal method in which high temperature and pressure were reduced gradually to room temperature and atmospheric pressure. In this study, an explosive treatment unit with increased scale of sample amount was newly fabricated. Illinois No.6 coal was treated by the explosive method in a mixed solvent of water and cyclohexanol using this unit. Changes in shape on the surface, specific surface area, and functional groups were analyzed. The explosively treated coal contained more amount of low boiling point components than the normally treated coal. It was suggested that the oil yield of explosively treated coal increased due to the liquefaction of these components during the successive hydrogenation process. For the explosively treated coal, micro pores were fractured by the rapid change in the volume of solvent molecules, and the specific surface area was smaller than that of the normally treated coal. When the treatment temperature was increased from 300{degree}C to 350{degree}C, specific surface areas of both the treated coals increased. 2 refs., 3 figs., 2 tabs.

  14. Visual feedback navigation for cable tracking by autonomous underwater vehicles; Jiritsugata kaichu robot no gazo shori ni motozuku cable jido tsuiju

    Energy Technology Data Exchange (ETDEWEB)

    Takai, M.; Ura, T. [The University of Tokyo, Tokyo (Japan). Institute of Industrial Science; Balasuriya, B.; Lam, W. [The University of Tokyo, Tokyo (Japan); Kuroda, Y. [Meiji Univ., Tokyo (Japan)

    1997-08-01

    A vision processing unit was introduced into autonomous underwater vehicles (AUV) to judge the visual situation and to construct an environmental observation platform that can collect wide-range and high-precision measurement data. The cable optionally installed at the bottom of the sea was recognized by vision processing to propose automatic tracking technique. An estimator that compensates for the hough conversion or time delay and a PSA controller that is used as a target value set mechanism or lower-level controller were introduced as the factor technology required for automatic tracking. The feature of the automatic tracking is that a general-purpose platform which can observe the prescribed range environmentally in high precision and density can be constructed because the observation range required by the observer can be prescribed near the sea-bottom surface using a cable. The verification result off Omi Hachiman at Lake Biwa showed that AUV can be used for the high-precision environmental survey in the range prescribed near the sea-bottom surface using a cable. 8 refs., 8 figs., 1 tab.

  15. Effects of austempering heat treatment conditions on fracture toughness of austempered ductile cast iron; Kyujo kokuen chutetsu no hakai jinsei ni oyobosu austemper shori no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Sugiyama, Y.; Arai, M. [Musashi Institute of Technology, Tokyo (Japan)

    1996-03-25

    Discussions were given in various manners to learn effects of treatment conditions with respect to fracture toughness of austempered ductile cast iron. Austenitizing temperature and isothermal transforming conditions that result in comprehensively most excellent fracture toughness including tensile strength were 1173 K and 648 K - 3.6 ks, respectively. The austenitizing temperature as low as 1123 K reduces quantity of residual austenite, resulting in residual inclusion of free ferrite in the structure. If as high as 1223 K, reduction in the fracture toughness is caused under any condition as a result of increase in unstable austenite and growth of austenite into coarse particles. With respect to the isothermal transforming conditions, high fracture toughness may be achieved at a relatively high temperature. However, a structure that has been transformed from austenite to bainite causes a secondary reaction in a short time, and deposits particulates of cementite and graphite, leading to a prediction of decrease in the fracture toughness. Therefore, it is preferable that the treatment time is decreased in order to suppress the secondary reaction. 9 refs., 10 figs., 7 tabs.

  16. Effects of subzero treatment on toughness of austempered ductile cast iron; Austemper kyujo kokuen chutetsu no jinsei ni oyobosu subzero shori no koka

    Energy Technology Data Exchange (ETDEWEB)

    Tsukahara, S.; Yamada, S. [Kanto Gakuin University, Yokohama (Japan)

    1998-04-25

    Specimens of austempered ductile cast iron (ADI) after constant temperature transformation at different temperatures are tested for tension, shock, and bending, and the effects of the testing methods and testing speeds on ADI strength and toughness are investigated. Specimens are made of an austempered Fe-Si-Mg alloy cast into 25mm-thick Y-shape blocks. Heat treatment is performed in the atmosphere for test pieces manufactured by machining. In the subzero treatment, the austempered pieces are cooled in water and then immediately placed in liquid nitrogen for rapid cooling. Findings obtained are mentioned below. A test piece austempered at 773K and then cooled in water retains 26% of austenite, and this disappears after a tension test. In a test piece given subzero treatment following the cooling in water, the residual austenite is found reduced from 20% to 13%. No change is observed in the amount of residual austenite before and after a bend test and impact test whether or not the test piece has been subjected to subzero treatment. 8 refs., 8 figs., 2 tabs.

  17. Effects of mechanical stimulating treatment on self-organization phenomena of materials; Kikaiteki reiki shori. Zairyo no jiko soshikia gensho ni oyobosu sono koka

    Energy Technology Data Exchange (ETDEWEB)

    Hida, M. [Okayama University, Okayama (Japan). Faculty of Mechanical Engineering

    1999-03-31

    The atoms and atom clusters around dislocation cores in crystals or surface layer deformed by mechanical energy are locally excited so as to give rise some chemical reactions and to self-organize their products into a kind of Spatial-Temporal Pattern Formation as a dissipative structure. A famous coupling phenomenon between mechanical and chemical process in solid materials must have been mechanical alloing. This report explains that various mechano-chemical treatments are powerfull method for entraining the solid system into non-equilibrium states and interesting phenomena stimulated by the mechanical self-catalysis reaction causing self-organization. (author)

  18. Microbial decomposition of marine spillage oil and its application to the disposal of spillage oil. Kaiyo ryushutsuyu no biseibutsu bunkai to shori eno oyo

    Energy Technology Data Exchange (ETDEWEB)

    Murakami, Akihiko; Yamane, Akiko (Tokyo Univ. of Agriculture and Tech., Tokyo (Japan))

    1990-01-01

    To dispose of the crude oil spilledonto ocean, there is no other way than to wait for microbial decomposition of the oil ultimately. It was, however, tried to develop a way to get rid of crude oil by causing microbial decomposition artificially. Factors which influence the microbial decomposition process of spilled crude oil are the temperature of the sea water, the density of decomposing bacteria and the concentration of nutrient salts. A method to accelerate the microbial decomposition by controlling these factors artificially and get rid of crude oil swiftly was examined. It is almost impossible to control the temperature of the sea water and the density of decomposing bacteria, and the only way left is to replenish nutrient salts. As a measure to maintain the concentration of nutrient salts near the oil film high by controlling the elution speed, a microcapsule which contains nutrient salts was developed. As a result of experimenting the developed microcapsule, its effectiveness and supplying conditions were demonstrated. It is, however, necessary to make further researches to improve the characteristics of nutrient salts, and to respond to the site conditions such as oceanic and tidal currents. 21 refs., 11 figs., 4 tabs.

  19. Wastes disposal on board a ship. Apparatus to decompose and annihilate wet refuses bionically; Senjo no haikibutsu shori. Namagomi no bio bunkai shometsuki

    Energy Technology Data Exchange (ETDEWEB)

    Takenaka, S.

    1996-07-25

    A bionic refuse disposing and annihilating apparatus for wet refuses produced on board a ship was developed, and introduced in this paper. This apparatus uses a system that biomass as a decomposing medium is maintained dry in a disposal tank, and wet refuses are decomposed and annihilated by the biomass working only with water contained in the wet refuses themselves. The system uses a decomposing medium composed of a mixture of different kinds of organic matters mixed with various nutrients, and automatically controls absorption and exhalation of decomposing water without using a heater. Almost all of wet refuses decomposes and annihilates in twelve hours after having been charged in their original forms. The decomposing medium can be used continuously for six months to a year. Because of complete annihilation by the bionic effect, no residue is created. This system uses a normal-temperature decomposing and annihilating bionic technology, whose minimum temperature required for decomposition and annihilation is 10{degree}C or higher, and the highest permissible temperature is 75{degree}C. Dry and cool environment at about 20{degree}C is most suitable. Deodorizing function of the biomass itself as the decomposing medium suppresses odor generation. 3 figs.

  20. Tallinna ajalugu Rootsi aja teisel poolel / Otto Liiv ; koost. Tatjana Shor

    Index Scriptorium Estoniae

    Liiv, Otto, 1905-1942

    1996-01-01

    Tallinna halduslikust korraldusest. Sisepoliitiline areng ja välispilt, majanduslik olukord Karl X ja Karl XII valitsemise ajal, usu-, haridus- ja kombeelu, eestlus Tallinnas hilisel Rootsi ajal ning Tallinna vallutamine Põhjasõja ajal venelaste poolt. Lisaks ka Otto Liivi bibliograafia lk. 63-78, koost. Shori, Tatjana

  1. Shvedõ trebujut prekratit voinu v Irake

    Index Scriptorium Estoniae

    2004-01-01

    Rootsi tuntud diplomaat Pierre Shori leiab Dagens Nyheter'is ilmunud artiklis, et Rootsi ametlik seisukoht ei nõua verevalamise peatamist Iraagis. Iraagi sõda kritiseeritakse ka Ameerikas, Harvardi professor Stanley Hoffman teeb ettepaneku tuua USA väed Iraagist välja 2005. aasta suveks. Spetsialistide hinnangul on USA majandus kaotanud Iraagi sõja tõttu 270 mld dollarit

  2. Fiscal 1999 geothermal development promotion survey report. Data processing (No. B-5 - Musadake region - Phase 3); 1999 nendo chinetsu kaihatsu sokushin chosa data shori hokokusho. No. B-5 Musadake chiiki (Dai 3 ji)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-01-01

    A comprehensive analysis was conducted into the results of a survey on the state of existence of geothermal energy resources in the Musadake region, Shibetsu-gun, Hokkaido. The region was volcanically active in the period from the Neogene period into the quaternary, with some volcanos still active even today. The geological structure on the whole is characterized by the Musadake/Mt. Shitabanupuri fault which is the major structure running NNE-SSW and having a folding structure. It is inferred that Musadake is the heat source responsible for the underground temperature distribution in this region. The maximum temperature of 274 degrees C is recorded at borehole N11-MD-3 in the northeastern part of Musadake, and the temperature falls rapidly as the distance from the borehole increases. Ejection of geothermal fluids is observed at boreholes N11-MD-3 and N11-MD-4. It is inferred that the deep-seated geothermal water is of the neutral Cl type with Cl concentration estimated at approximately 12,000 mg/liter. Steam composition is characterized by a gas concentration level that is as high as 3-4 vol.%. The gas is composedly mainly of CO2 and contains some hydrocarbons. Fluids in this region are classified into water mixing into deep-seated geothermal water and groundwater originating in meteoric water. (NEDO)

  3. Engineering characteristics of the improved soil by deep mixing method using coal ash; Sekitanbai wo riyoshita FGC shinso kongo shori koho ni yoru kairyodo no kogakuteki seishitsu to kongo no tenbo ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, T. [Center for Coal Utilization, Japan, Tokyo (Japan); Azuma, K.; Watanabe, M. [Electric Power Development Co. Ltd., Tokyo (Japan)

    1996-09-01

    Japan currently produces about six million tons of coal ash annually, whose effective bulk utilization to earth engineering materials is an important issue of technological development. A slurry may be made by mixing the following three kinds of materials: fly ash discharged from power plants exclusively burning dust coal (F), gypsum generated as a by-product in a stack gas desulfurizing process (G), and commercially available cement (C). The slurry would be called an FGC slurry taking the first letters of the materials. This paper presents the results of laboratory tests, in-situ execution tests and centrifuge model testing on engineering characteristics of soils improved by the FGC slurry when the slurry is applied to implementing the deep mixing method. As a result, a large number of findings were obtained including the following matters: the FGC deep mixing method makes it possible to improve ground beds having small deformation coefficient with the same accuracy as in the cement-based deep mixing (CDM) method at strengths lower than 5 kg/cm {sup 2} which is difficult with the CDM method, not to speak of strengths equivalent to that is possible with the normal CDM method; and development of a ground bed with improved strength is possible without being governed by quality and kinds of the fly ash. 1 ref., 23 figs., 5 tabs.

  4. Treatment of high salinity and high strength organic wastewater consisting of sulfanilamide by two-stage contact oxidation process; Nidan sesshoku sankaho ni yoru sulfanilamide wo fukumu koenbun konodo yukisei haisui no shori

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Z. [Yamaguchi University, Yamaguchi (Japan); Fukagawa, M. [Ube Technical College, Yamaguchi (Japan); Ukita, M.; Nakanishi, H. [Yamaguchi University, Yamaguchi (Japan). Faculty of Engineering

    1995-09-10

    Two-stage contact oxidation process was used to treat sulfanilamide wastewater containing high salinity and high strength organic matter. The results indicated that the removal of sulfanilamide was changed from the first stage to second stage with the increasing of loading rate, and when the loading rate was increased up to 1.85 kg-TOC{center_dot}m{sup -3}{center_dot}d{sup -1} sulfanilamide was only removed in the second stage. During this period the total removal of BOD was about 96.5%, the removal of sulfanilamide was 94.1% and the turbidity of the treated waste water was low because of the low concentration of 55 in the effluent. In this study the deference of the bacterial structure between the first stage and the second stage was not obvious until TOC loading rate was increased to 1.16 kg-TOC{center_dot}m{sup -3}{center_dot}d{sup -1}. However, when TOC loading rate was 1.85 kg-TOC{center_dot}m{sup -3}{center_dot}d{sup -1}, in the first stage microorganisms mainly consisted of bacilliform bacteria, in the second stage, microorganisms mainly consisted of filamentous bacteria. 9 refs., 6 figs., 3 tabs.

  5. FY 1998 annual report on the study on development of corrosion-resistant ceramic materials for garbage incinerators; 1998 nendo gomi shori shisetsuyo taishoku ceramics zairyo no kaihatsu ni kansuru kenkyu chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Described herein are the FY 1988 results of development of corrosion-resistant ceramic materials for garbage incinerators. Residue released when porcelain stocks are collected is selected as the inexpensive stock for SiO{sub 2}-Al{sub 2}O{sub 3}-based refractory materials. It is incorporated with carbon black and reduced at 1,200 to 1,500 degrees C in a nitrogen atmosphere. Synthesis of the target Si-Al-C-N-O-based compound succeeds in the presence of a solid catalyst, but it is a fine powder, and hence that of the massive compound fails. The commercial ceramic materials and new refractory materials, made on a trial basis, are evaluated for their resistance to corrosion using fry ashes collected from a commercial incinerator. These ashes are higher in melting point, more viscous, holding a larger quantity of attached slag and more corrosive than synthetic ashes. These materials are corroded acceleratedly as temperature increases to 1,200 degrees C or higher, more noted with the ceramic materials than with the refractory materials. Oxidation and melting characteristics of the molten slag affect corrosion of some materials. Use of the graphite-based material shall be limited to a section below the slag surface, where graphite is oxidized to a smaller extent. The MgO-based material is promising. The Al{sub 2}O{sub 3}-Cr{sub 2}O{sub 3}-based material is more promising than any other material developed in this study. Their bending strength before and after the corrosion test is measured at normal temperature to 1,700 degrees C, to investigate their deterioration by high temperature and corrosion. (NEDO)

  6. Returning method of hot water in geothermal power generation and structure of pipeline for hot water returning; Zinetsu hatsuden ni okeru nessui no kangen shori hoho oyobi kangen nessuiyo haikan kozo

    Energy Technology Data Exchange (ETDEWEB)

    Mori, Y.

    1997-06-17

    According to the invention, the geothermal fluid consisting of steam and hot water gushing out of steam production well is separated into steam and hot water by means of gas-liquid separator, and the hot water is returned into the ground through the returning well without being exposed to the atmosphere. At that time, the temperature of the hot water to be returned to the ground is lower than the temperature of the hot water remained in the well. Before returning the hot water to the ground, the hot water level in the return well is lowered by means of compressed air so as to keep the temperature of hot water remained in the well being higher than the temperature of hot water to be returned. The pipeline of the hot water closed system including the production well and return well is either upward inclined or downward inclined in the flowing direction. In these ways, the hot water can be returned safely to the ground without causing hammering. 2 tabs.

  7. Investigation of geothermal development and promotion for fiscal 1997. Supplementary investigation report concerning data processing (No. B-5 Musadake area); 1997 nendo chinetsu kaihatsu sokushin chosa. Data shori ni kakawaru hosoku chosa (No.B-5 Musadake chiiki)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This investigation was conducted, in the area extending over Nakashibetu-cho and Shibetu-cho, Shibetu district, Hokkaido, on the measurement of geological age of the area around Musadake, and on the measurement and analysis of alteration age. The geological nature of the investigation area consists of volcanic rocks/sedimentary rocks in the Neogene period and volcanic ejecta in the Quarternary period. The alteration zone is distributed in large numbers from the northern part of Musadake to the vicinity of Mt. Mataochi. In the subject area, geothermal symptoms indicated by the gushing out of hot springs are noticeable, as is the mineralization of copper, lead and zinc, which are the signs that alteration zones are distributed in such sites and vicinities. These alteration zones can be classified into geothermal alteration zones and mineralized alteration zones. The geothermal alteration zone, on one hand, is characterized by the altered base rock primarily in the bed of the latter Pliocene epoch onwards and by white clay formation/iron pyrite impregnation. As a result of X-ray analysis, detected were alunite, kaolinite, sericite/montmorillonite mixed bed mineral, montmorillonite, {alpha}-cristobalite, etc.. The mineralized alteration zone, on the other hand, is characterized by the altered base rock in the bed of the Miocene epoch and by the noticeable clay formation, silicification, and iron pyrite impregnation. (NEDO)

  8. Concrete dam construction using computerized aggregate plant (CAP). ; Automatic production control using image processing. Jidoka kotsuzai plant (CAP) ni yoru concrete dam seko. ; Gazo shori wo chushinnishita seisanryo no jido seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Aso, K.; Wakiyama, I.; Kita, Y. (Hazama Gumi, Ltd., Tokyo (Japan))

    1992-10-25

    For an aggregate plant that crushes and sorts out rocks using crushers and screens, a computerized aggregate plant (CAP) was structured utilizing the latest micro computers and communications technology. While local automations have been carried out in other plants using relays and sequencers, this CAP development has been targeted at further economic optimization and manpower saving with the main aims placed on machine control using operation control and feedback control based on the quantity control method. The system consists of the crushing control system to adjust automatically the vibration feeders by detecting empty-full levels in the hoppers and load current in the crushers; the image processing system to analyze still images photographed by a CCD camera and measure amount of aggregates transported and grain shapes the automatic damper system to adjust amounts of materials unloaded from and charged into the crushers using a computer; and the system to link batcher plants with the aggregate plant. The system was given verification tests at several dam sites. 7 figs., 5 tabs.

  9. Advanced industrial technologies by the Tohoku National Industrial Research Institute. ADI function grading by the temperature gradient type austenpering treatment; Tohoku kogyo gijutsu kenkyusho sentan kogyo gijutsu. Ondo kobaigata austenper shori ni yoru ADI keisha kinoka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-10-15

    The advanced industrial technologies were introduced which are under research in the Tohoku National Industrial Research Institute. As for the research to grade the ADI function by the temperature gradient type austempering treatment, an ADI was produced which was graded in both hardness and toughness by austenpering-treating a graphite cast iron sphere. As for the research on the lamination by plating, a composite which was high in lamination strength and low in residual stress was produced by plating the base sheet with a thin film, giving a compressive force and heating it in vacuum in order to produce the composite with ceramics-metal or interceramics lamination. As for the research on the removing method of iron ions from the plating solution, a chelate resin was produced which contained multidentate ligands similar to the nitrirotriacetic acid selectively adsorbing the iron ions. As for the research to evaluate the corrosion of steel in the geothermal water, geothermal hot water in Miyagi Prefecture was experimentally evaluated in damaged quantity of carbon steel and stainless steel. Then, the damaged quantity even of carbon steel was shown to be within the usable limits as a construction structural material. 5 refs., 26 figs., 2 tabs.

  10. Processing of the reflection seismic data which were acquired in the continental shelf off the north-west Australia; Australia hokusei tairikudana chiiki ni oite shutokusareta hanshaho chishitsu tansa data no shori ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Amano, H. [Japan National Oil Corp., Tokyo (Japan)

    1996-05-01

    Reflection exploration of earthquakes was conducted in the continental shelf off the north-west Australia, and a report is made concerning the processing of the acquired data. A GI gun was used as the vibration source, and a wave quite similar to a pulse was generated. Hydrophones were arranged with group intervals of 12.5m, and high-resolution field data were acquired. An analog low cut filter was used to suppress the large-amplitude swell noise attributable to sea conditions. A digital filter was designed for the purpose of eliminating coherent noises from other survey ships. At the ultimate stage the f-k filter was applied to each of the shot records, and the effectiveness was verified. The traverse line was as long as 6700km and therefore the design window was set relatively long at 2.0-4.0s in the residual static correction phase. It was found that this setup is effective in improving the continuity of the reflection surface. 5 figs., 1 tab.

  11. Development and field example of multi channel surface wave data acquisition and processing system (SWS-1); Multi channel hyomenha data shutoku shori system (SWS-1) no kaihatsu to jikkenrei

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Y. [Huashui Institute of Geophysical Exploration, (China); Wang, Z. [Bureauof Engineering MGMR, (China); Zhang, Z [STG Corp., (China); Tanaka, Y.

    1996-05-01

    A report is given here about the use of a newly-developed multi-channel surface wave data acquisition and processing system different from the conventional surface wave exploration device. This system enables the on-site pickup of a dispersion curve out of the multi-component surface wave data and, in the analysis of underground structure, performs the forward modeling and inversion. The system, furthermore, acquires and analyzes the data obtained from reflection earthquake exploration and constant microtremor observation. During a survey conducted along the highway from Port Ren-un to Xuzhou, China, estimation of the basement boundary was made by use of dynamite, and what was obtained agreed with the result of boring though with an error of 3m. In addition, this system could probe levels deeper than 100m using the instantaneous Rayleigh wave exploration method. This system and the conventional surface exploration device were compared in a soft ground in Fukui Prefecture, the former using a 10kg hammer and the latter using a 350kg exciter, when it was verified that the results produced by both techniques excellently agree with the geologic columnar section and changes in the N-value. 4 refs., 4 figs.

  12. Study of reaction and heat release from solid combustion in strong magnetic field; Kyojiba wo riyoshita hikinshitsu kotai nensho shori no hanno to netsu no seigy ni kansuru kiso kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Ito, K.; Fujita, O.; Iiya, M.; Kudo, K. [Hokkaido University, Sapporo (Japan)

    1997-02-01

    To establish the inhomogeneous solid combustion control technology, effects of the strong magnetic field on the solid combustion were examined. When applying the sufficiently strong magnetic field, it is possible to control the air flow in combustion field by utilizing the force applying to constituent oxygen with large susceptibility. Based on this possibility, combustion experiments of expanded polystyrene plates were conducted between the magnetic poles of electro-magnet having the maximum flux density of 1 T and the maximum magnetic field gradient of 0.5 T/cm. To observe the effects of magnetic field without the effects of natural convection, combustion experiments of acrylic sheets were conducted between the magnetic poles of electro-magnet having the maximum flux density of 0.6 T and the magnetic field gradient of about 0.1 T/cm under the microgravity conditions between 10{sup -4} and 10{sup -5}g using a microgravity test facility. Consequently, prospective combustion results could be obtained, in which the force of flame received from the magnetic field is almost equivalent to the buoyancy of flame. It was demonstrated that combustion can be controlled by the magnetic field. 1 ref., 3 figs., 1 tab.

  13. Thermal relaxation of bituminous coal to improve donation ability of hydrogen radicals in flash pyrolysis; Sekitan kozo kanwa ni yoru suiso radical kyoyo noryoku no kojo wo mezashita netsubunkai mae shori

    Energy Technology Data Exchange (ETDEWEB)

    Mori, T.; Isoda, T.; Kusakabe, K.; Morooka, S. [Kyushu University, Fukuoka (Japan). Faculty of Engineering; Hayashi, J. [Hokkaido University, Sapporo (Japan). Center for Advanced Research of Energy Technology

    1996-10-28

    In terms of coal conversion reaction, the behavior of bituminous coal heated beyond a glass transition point was examined on the basis of pyrolyzed products, and the effect of an increase in proton mobility on promotion of coal decomposition was evaluated. In experiment, after Illinois bituminous coal specimen was heated up to a specific temperature in N2 or He gas flow at a rate of 5K/min, the specimen was directly transferred to a pyrolyzer for instantaneous pyrolysis. As the experimental result, the glass transition temperature of the Illinois coal specimen was calculated to be 589K from a differential scanning calorimetry (DSC) profile. From the pyrolysis result of the Illinois coal specimen heated up to 623K, the char yield decreased by 3kg as compared with that of the original coal, while the tar yield increased by 4kg up to 27kg per 100kg of the original coal. This tar increase was larger than that of cooled coal. These results suggested that the donation of hydrogen radicals to coal fragments is improved with an increase in proton mobility. 4 refs., 4 figs., 1 tab.

  14. Generalized report on the research cooperation promoting project. Research cooperation related to the mine waste water treatment technology utilizing biotechnology; Kenkyu kyoryoku suishin jigyo sokatsu hokokusho. Bio riyo ni yoru kohaisui shori gijutsu ni kansuru kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This paper is a generalized report in relation with the mine waste water treatment technology utilizing biotechnology, from among the promotion projects for research cooperation with China. Ferric iron (Fe{sup 3+}), which precipitates at low pH, is produced by utilizing bacteria which derives energy from oxidizing ferrous iron (Fe{sup 2+}) in the waste water, and the iron is precipitated and removed by using low-cost calcium carbonate as a neutralizing agent. Joint researches and developments have been carried out on selection of optimal kinds of bacteria, cultivation of bacteria oxidizing iron at high efficiency, optimal removal system of heavy metals in mine waste water, and recovery of useful resources. Japanese engineers were sent to sites in China, Chinese researchers were received in Japan, and pilot plants were operated and studied. For the purpose of proliferating and enlightening the result of the project, a seminar was held in Beijing in February 1998. In order for the achievements derived up to fiscal 1998 to be used in diverse fields, fiscal 1999 will carry out follow-ups, including assistance, for the voluntary researches performed by China. The follow-ups will also include confirmation on the state of testing the iron oxidizing bacteria technology, technical guidance, and analyses and discussions on the data. (NEDO)

  15. Batch process. Batch super-fractionation as analysis technique (Development of a pretreatment apparatus for the analysis of microcomponents in the water); Bunseki gijutsu toshiteno bacchi seimitsu joryu - suichu niokeru biryo seibun no bunseki yozen shori sochi no kaihatsu -

    Energy Technology Data Exchange (ETDEWEB)

    One, S.

    1997-09-05

    To analyze high boiling point organic contaminants in the water, first, the contaminants are extracted by using organic solvents, and condensed to such concentrations that they are in the ranges suited to the sensitivities of the analyzers used. Using a newly developed pretreatment apparatus for the analysis of microcontaminants in the water, samples to be analyzed are prepared by automatic condensation of the extracted samples by batch distillation. All of the series operations, i.e. cleaning the apparatus, introducing samples, condensing the samples, taking out the samples and cleaning the apparatus are automated. In the automation, a computer system for an ASTM distilling apparatus, a drop counter for measuring the amount of evaporated liquid and a float type liquid level control apparatus for controlling the measurement of the liquid level are utilized. In order to detect the contaminants remaining in the apparatus after cleaned, a gas chromatograph mass spectrometer is used as an ultramicroanalysis technique. The sequence of the automatic operation was programmed by using a personal computer, and the operation data were logged, whereby data necessary for quantitative analysis, such as the calculation of material balance were stored. 2 figs., 1 tab.

  16. Fiscal 1998 research report. Popularization project of the proper treatment technology of industrial wastes in Asian regions; 1998 nendo chosa hokokusho. Asia chiiki sangyo haikibutsu tekiseika shori gijutsu nado fukyu sokushin jigyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    Study was made on popularization of the proper treatment technology of industrial wastes in Asian regions. In principle, industrial wastes should be recycled in a country concerned, however, because of a difference in technology and industrial location, treatment of all industrial wastes in a country concerned is impossible. International cooperation is thus indispensable to promote proper efficient practical measures for environment. For studying the possibility of the international cooperation between Japan and Asian countries concerned for further recognition and solution of industrial waste problems, 'International Symposium on the Asian Industrial Waste Issue' have been held in Tokyo since 1997 for governmental staffs. In fiscal 1998, Malaysia was invited in addition to China, Philippines and Thailand for popularization of the proper treatment and recycling of industrial wastes in Asian regions. In every Asian countries, poor collection of discharge, treatment and disposal data is an obstacle to effective treatment. Technical cooperation and financial support by developed countries are demanded. (NEDO)

  17. Study on solidification and stabilization technique by steam treatment of the coal ash from fluidized-bed combustion boilers; Ryudoso sekitanbai no joki shori ni yoru koka / anteika gijutsu ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Shibata, Y. [Kawasaki Heavy Industries Ltd., Kobe (Japan)

    1998-08-20

    In fluidized-bed coal combustion boiler supporting one end of boilers for power generation and process heating, coal ash comprised of the products of ash of coal and lime stone used for desulfurizer was used for raw material. The fluidized-bed combustion boiler really working at present is of normal pressure (AFBC) type due to bubbling or cycling system, and pressure type of the bubbling system (PFBC) due to high pressure of about 1.0 MPa is promoted development for a next generation type power generation. Then, by using the coal ash obtained from the AFBC boiler with different kind of coal, volume of boiler, and so on (AFBC ash) and the coal ash obtained from the PFBC boiler under actual proof operation, a study on properties of coal, lime stone and solids after steam treatment of mixture with water (kind/volume, strength and elution of hazard heavy metals of hydrates) were conducted to investigate to use for civil engineering materials such as road materials, filling back materials, and so forth. 16 refs., 13 figs., 2 tabs.

  18. Improvement of static strength and fatigue crack propagation resistance in ductile cast iron by austempering from (. alpha. +. gamma. ) phase region. Bubun austenpering shori ni yoru kyujo kokuen chutetsu no seiteki kyodo to hiro kiretsu shinten teiko no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Sugiyama, Y.; Asami, K.; Matsuoka, S. (Musashi Institute of Technology, Tokyo (Japan))

    1991-06-15

    The spheroidal graphite cast iron is better characterized in resistivity against the abrasion and heat, and economical efficiency than the normal carbon steel. Notice being taken of treatment temperature (800 to 840 centigrade) in the ({alpha}+{gamma}) phase region for the partial austempering treatment condition, able to improve the spheroidal graphite cast iron simultaneously in both statical tensile characteristics and fatigue crack propagation resistance, the present report compared dual phase as-cast material, single phase ferrite and single phase bainite. As a result, the morphological ratio of bainite becomes about 20% to the base morphology at 800 centigrade in treatment temperature. Then with progressively heightening to 815, 830 and 840 centigrade in it, the above ratio so heightens to about 40, 80 and 90%, respectively. The fatigue crack propagation resistance in the low DeltaK (low stress intensity factor) region is heightened by the partial austempering treatment to higher than that of dual phase as-cast material, single phase ferrite and single phase bainite, and most done at 800 centigrade in temperature where the bainite becomes about 20% in morphological ratio. 830 centigrade where the bainite becomes about 80% is judged to be the most appropriate treatment temperature for both the statical tensile characteristics and fatigue crack propagation resistance. 3 refs., 16 figs., 3 tabs.

  19. Effects of silicon content and austempering condition on the impact characteristics of austempered ductile cast iron. Kyojin kyujo kokuen chutetsu no jinsei ni oyobosu osutenpa shori joken to Si ryo no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Aoyama, M. (Daido Inst. of Technology, Nagoya (Japan)); Kobayashi, T. (Toyohashi Univ. of Technology, Aichi (Japan)); Matsuo, K. (Kurimoto Iron Works, Ltd., Osaka (Japan))

    1990-07-25

    Austempered spherical graphite cast iron (ADI) is extensively expeted as a mechanical structural material because of high tenacity and resilience as well as fatigue strength and wear resistance. These excellent properties are attributed to the abundantly remaining austenite because the formation of carbides is restricted by the action of the silicon element. It is, therefore, important for obtaining the strong cast iron material to control the amount of the retained austenite. In this study, the impact characteristics was investigated for acquiring the basic materials concerning the influence of the temperature, time of austempering and the amount of silicon. The added amount of silicon is most suitably 2.1%. Samples without Mn and Ni showed an impact value of about 2 times of the amount added. At 400 {degree} C, however, the impact value reduced to half by the growth of coarse ferrite and bentonite. Time of austempering was 1 hour and showed a stable impact value and load of breaking. Transition temperature shifted tolow side by the increase of amount of silicon. 14 refs., 10 figs., 1 tab.

  20. Fiscal 1993 investigational study of a model of international cooperation for an environmentally harmony type green technosystem; 1993 nendo Oshu ni okeru haikibutsu shori oyobi recycle no doko ni kansuru chosa kenkyu hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-03-01

    For the natural environment preservation, effective utilization of resources, and maintenance of the ecosystem, an international cooperation model was proposed for the environmental harmony type green technosystem. A comprehensive evaluating analysis of a green forest resource, etc. as the global resource, and an intensive extraction of subjects and needs was made. The analysis was conducted of technical possibility and abstract business development effects toward the industrialization with high values added which is in harmony with the environment. As a case study, the Papua New Guinea area, Malaysia was selected and re-evaluated. For this typical tropical forest area, a new technical system was studied based on the natural environment, industry/economy, social/cultural assessment, etc., and a model for industrializing new international cooperation was proposed. For the model making for industrialization, various steps to be taken and conditions to be prepared were studied and arranged for the realization. Upon going ahead with the international technical cooperation, Japan, a large lumber consuming country, needs to always consider the fostering and effective use of lumber resource in particular. 27 refs., 28 figs., 30 tabs.

  1. Manufacturing of semi-solid ferrous alloys. 3. ; Manufacturing of semi-solid metals by SCR (shear-cooling roll) process. Tetsukei gokin no hangyoko shorizai no seizo. 3. ; Sendan reikyaku roll ho ni yoru hangyoko shori kinzoku no seizo

    Energy Technology Data Exchange (ETDEWEB)

    Sugiyama, S.; Kiuchi, M.; Yamamoto, J. (The University of Tokyo, Tokyo (Japan). Institute of Industrial Science)

    1993-07-01

    This paper reports on devising a shear-cooling roll (SCR) process that differs from the rheocasting process, and on trial manufacturing of semi-solid metals using ferrous alloys. Test specimens were made from three kinds of graphite cast iron (FC30, one corresponding to FC20, and FCD40), stainless steel (SUS304), and carbon steel (S45C). The experimental result revealed the following matters: semi-solid metals can be manufactured in a wide range of states such as foil, high and low solid-phase slurries; preheating temperatures of the roll and fixed cooling shoe affect largely the appearance and internal structure of SCR-processed materials; and the internal structure of an SCR-processed material forms a uniform isometric system and progresses recrystallization if it is heated and retained above the solid phase line. These results indicate nearly the same phenomena as those presented by low melting point alloys including solder and aluminum alloys. The processing procedure consists of injection of molten test specimen of a predetermined weight (about 10 kg) into the roll and fixed cooling shoe in the SCR machine preheated to the same temperature as that of the melt, and air-cooling the discharged metal in a container having heat insulated inner face. 2 refs., 10 figs., 1 tab.

  2. Research cooperation project in fiscal 1998. General report on research cooperation related to mine waste water treatment technology by utilizing biotechnology; 1998 nendo kenkyu kyoryoku jigyo. Bio riyo ni yoru kohaisui shori gijutsu ni kansuru kenkyu kyoryoku sokatsu hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This paper describes cooperative development of bio-treatment technology for mine waste water generated by operating mines in China. Certain types of bacteria have capability to oxidize ferrous iron in the waste water into ferric iron ions. The bacteria cause ferric iron oxides in low pH regions to get deposited, and can remove them from sedimentation by using cheap calcium carbonate as a neutralizer. Volumetric reduction in waste sediments may also be achieved during removing heavy metals in a pretreatment process. Great advance may be expected in taking actions to prevent water quality contamination. This paper summarizes activities taken in fiscal 1998. Eight site surveys in total were carried out using 47 persons in total. Major activities included operation study guidance of a pilot plant, and surveys for measures on heavy metal generation sources in Wushan Mine. In addition, site surveys were performed at Dexing Mine and Yinshan Zinc Mine. Subsequently from fiscal 1997, a bench scale testing equipment used in Japan and consumables were transported to China. The operation study data on the pilot plant were put into order and analyzed. Concept design was also made on a waste water treatment facility for Wushan Mine. (NEDO)

  3. Report on the project for spread/promotion of technology for the industrial waste optimized treatment in the Asian region (International Symposium `98); Asia chiiki sangyo haikibutsu tekiseika shori gijutsu nado fukyu sokushin jigyo (symposium kaisai) hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    In Japan and Asian countries, the optimized treatment of industrial waste is the problem with the economic growth. Border-crossing movement of the waste for promotion of the renewable use is also a problem. Therefore, the International Symposium `98 on the industrial waste problem in the Asian region was held. China, Thailand, the Philippines and Korea were invited to Japan to give lectures. MITI of Japan reported on the present situation of Japan and the cooperation with Asian countries. The industrial circle reported on efforts for environmental protection measures to be taken, the industrial waste problem at companies which advanced into Asian countries, effects of the Basel Convention on recycling activities, Japan`s role in Asia, etc. In the panel discussion, promotion of cooperation for recycling technology and Japan`s support for formulating strategy on the industrial waste were requested to Japan, and the construction of an Asian area network was proposed. Concerning the cooperative system between governments and private companies, it was concluded that it was necessary to discuss it considering the actual state of each country. Importance of recycle and information exchange was realized again. 10 refs., 15 figs., 27 tabs.

  4. Report on the project for spread/promotion of technology for the industrial waste optimized treatment in the Asian region; Asia chiiki sangyo haikibutsu tekiseika shori gijutsu nado fukyu sokushin jigyo hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    The International Symposium `98 on the industrial waste problem in the Asian region was held in Tokyo on February 18, 1998. MITI commented on the present situation of the industrial waste problem in Japan and Japan`s environmental tackling toward the Asian region, and also Asian countries (China, the Philippines, Thailand and Korea) made reports. Japan reported on environmental preservation measures taken in the industrial circle, the industrial waste problem at companies which advanced into Asian countries, effects of the Basel Convention (which restricts border-crossing movement of harmful wastes) on recycle activities, Japan`s role in Asia, etc. In the panel discussion, discussions were made on human interchange in the informatization, recycling technology, shortage of personnel concerned with environmental protection, construction of a network in the Asian region and Japan` s role, etc. As to the treatment system for waste, the necessity was recognized of studying systems which meet with actual states of each country. It is also necessary to go on with discussing how the system should be for cooperation between governments and private companies. Importance of the recycle and information exchange was emphasized. 10 refs., 14 figs., 27 tabs.

  5. Alkylation reaction by the 2-chloropropane of benzene on the hyper saline element processes alumina catalyst; Koenso shori arumina shokubaijo deno benzen no 2-kuroropuropan ni yoru arukiruka hanno

    Energy Technology Data Exchange (ETDEWEB)

    Imanishi, Kazuhiro; Saeki, Takayuki; Sawada, Tetsuro; Shobu, Akinori

    1999-09-01

    The semibatch reactor was used at atmospheric pressure, 273K in respect of isopropyl reaction by 2-chloropropane (2CP) of benzene on aluminia catalyst (AmLSA) chlorinated in the high temperature. The AmLSA catalyst showed the activity, which was higher than the AlCl{sub 3} catalyst. Main products were isopropyl benzene (IPB) and para - diisopropyl benzene (dj-IPB) - 1,3,5-triisopropyl benzene (tri-IPB) and, and the generation of 4 substitutes was as a trace. Product composition at 2CP 100% conversion ratio is IPB 76%, di-IPB I9%, tri-IPB 5% Di-IPB in the isopropyl reaction of IPB be 82%, tri-IPB It was 18%. The catalyst was perfectly toxified, even if it is deaerated at the temperature of pyridine adsorption post 573K or less, and it began to recover in the de-aeration of 673K, and it recovered after the de-aeration at 873K to active 43% before the toxification. It was concluded, when the reaction perfectly stops, when the catalyst is removed from system of reaction, and when the elution of the active species has not been generated. In comparison with the result of result of the superscription and alkylation reaction by 1 - chloropropane (ICP) and isopropyl reaction by the aluminum chloride catalyst, the reaction on the AmLSA catalyst was explained with that it progressed by the mechanism of the Friedel-Crafts type. (translated by NEDO)

  6. 3D seismic survey in Honjo, Akita. Problems and struggles in acquisition and processing; Akitaken Honjo koku ni okeru sanjigen jishin tansa. Genba sagyo to data shori ni okeru mondaiten

    Energy Technology Data Exchange (ETDEWEB)

    Imahori, S.; Kotera, Y.; Nakanishi, T. [Japan Energy Development Co. Ltd., Tokyo (Japan)

    1997-05-27

    Honjo mining area where investigations are conducted is hilly and has a complicated terrain with gas pipes buried in the ground just under the access road disabling the proper positioning of shock-generating large excavators or vibrators. Auger`s shallow hole shooting method is used in this survey to execute blastings at 639 points. In this method using charge depths of 4m, different from the conventional method using deeper charge depths (20-25m), surface waves prevail in the shot records giving rise to a new problem of removing them in the stage of data processing. The 2D filter that is a powerful tool in 2D data processing is not available in a 3D-survey where the tracing intervals are irregular in the shot records. In the effort of this time, a window length as a parameter in the direction of time is specified, and the F-X dip filtering method is employed in which any event that linearly continues beyond a certain number of traces in the said window is eliminated as a linear noise. It is recommended that the weighting function be changed in the direction of space since surface wave velocities are different at different locations. 1 fig., 1 tab.

  7. Analytical study on aseismic base isolation in new offshore location. For practical location for thermal power plants by soft-landing artificial ground construction method; Atarashii kaijo ricchi ni okeru menshinsei ni kansuru kaisekiteki kento. Nanchaku jinko jiban koho ni yoru karyoku hatsuden setsubi ricchi jitsuyoka ni mukete

    Energy Technology Data Exchange (ETDEWEB)

    Kawamura, T.; Sakakibara, T. [Tokyo Electric Power Co. Inc., Tokyo (Japan); Ishikawa, M. [Nikken Sekkei Ltd., Osaka (Japan)

    1996-09-05

    Assuming offshore location of thermal power plants by soft-landing artificial ground construction method, its effect on uneven settlement of facility unit group and its seismic behavior were studied. In soft-landing artificial ground, the total weight and buoyancy of a caisson body with interior space are balanced by controlling water level in a tank to reduce landing pressure. Artificial ground resists lateral seismic external force by friction with submarine bedrock. Settlement analysis and seismic behavior analysis were conducted by 2-D FEM. As a result, bottom RC honeycomb structure was sufficient to resist uneven settlement during construction even under fixed junction condition between units. In soft-landing artificial ground, the maximum acceleration was reduced to nearly 70% by aseismic base isolation as compared with conventional methods. In addition, its sliding manner in earthquake was different from that of rigid bodies, and the maximum stress acceleration transmitted to the bottom of artificial ground changed even under the same waveform. 4 refs., 13 figs., 4 tabs.

  8. Investigation of the near-field structure of jet diffusion flame by the laser sheet method. 1st Report. New seeding method of scattering particles and its application; Laser sheet ho ni yoru funryu kakusan kaen no kibu kozo no kaimei. 1. Atarashii sanran ryushi tenkaho no teian to sono oyo

    Energy Technology Data Exchange (ETDEWEB)

    Noda, S.; Onodera, K.; Kamitakahara, Y.; Onuma, Y. [Toyohashi University of Technology, Aichi (Japan)

    1997-02-25

    The new seeding method of MgO scattering particles based on a laser sheet method was developed, and the near-field structure of jet diffusion flame was studied. This method adds MgO particles (0.2-1.0{mu}m in size) produced by oxidation reaction as scattering particles through combustion of a Mg ribbon in a passage. Since this seeding method of scattering particles can add extreme-densely particles, this method is applicable to not only laser sheet visualization but also laser Doppler velocimeter and concentration measurement. In non-combustion jet formed over a contraction nozzle, coherent vortices are formed in the near field within nearly 8000 in Reynolds number, and the coherent vortices enhance mixing of fuel and air in the process of their linear and nonlinear growth. In the case over 8000 in Reynolds number, the small-scale short-lifetime coherent vortices are formed in the initial development stage of mixed layers, and the whole jet is dominated by irregular turbulent mixing after collapse of the coherent vortices. 14 refs., 8 figs., 1 tab.

  9. Investigation of the creation of functional surfaces and the recent development in related researches. 2. Investigation of the development of new isolation/refining systems in water system; Kokino hyomen no sosei to shintenkai no kenkyu doko chosa. 2. Suikei ni okeru atarashii bunri seisei system no kaihatsu ni kansuru chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-03-01

    Propositions were made concerning new chromatography and membrane separation techniques wherein a command control material is used, the mobile phase is fixed upon water, and the fixed phase is caused to vary by external commands, and how to develop the said techniques into a project was discussed. New methods were also introduced, capable of separating water systems and, particularly, capable of separating and refining, without damaging their functions, bionic elements such as proteins, genes, and cells, which encouraged discussion on the future of the said project. As for command controlled materials, detailed investigations were conducted into materials responsive to physical stimulation such as light, electric field, magnetic field, or heat and materials responsive to PH and chemical or biochemical substances, and discussion was made on the structures and characters of the said materials. Concerning the manufacture of a command controlled surface, consideration centered particularly about the density and thickness of command controlled molecules to be introduced onto the surface. Furthermore, the current state and problems were discussed regarding chromatographic separation and refining of optical isomers, nucleic acids, physiologically active substances, peptides, cells, etc. 252 refs., 75 figs., 31 tabs.

  10. TMN-based network management systems for utility telecommunication network. Pt. 4. Method of estimation of processing time for a management function; ATM ni motozuku denryoku tsushinmo no un`yo kanri system. 4. Kanri kino tani no shori jikan suitei hoho

    Energy Technology Data Exchange (ETDEWEB)

    Yusa, H.; Otani, T.

    1998-05-01

    A method of estimation of processing time for a management function is proposed to test system performance. This method utilizes characteristics of message passing between managed objects to recognize all over the systems. Estimation of processing time is proceeded with following steps. (1) analysis of message flow: with design information, message patterns are set and the number of messages to be sended and received are counted. (2) measuring processing time of each message type: we developed programs to measure processing time of sending and receiving messages. Using this programs, message processing time for each message type is measured. (3) calculating total system processing time: managing system processing time and managed system processing time are calculated. Total system processing time is derived from those. This paper also shows the applying proposed method to SDH fault detection function, which have two different processes: all event process, event and log process. This resulted in 2:1 processing time on a case of fiber cut off for managing two SDH equipments. (author)

  11. Effect of reversion treatment on strength and ductility of low C, Cr-Ni martensitic stainless steel with high resistance to weld softening. Yosetsu nanka teiko no takai teitanso Cr-Ni maruten saito kei stainless ko no kyodo, ensei ni oyobosu gyaku hentai shori no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Igawa, T.; Takemoto, T.; Uematsu, Y. (Nisshin Steel Co. Ltd., Tokyo (Japan). Steel R and D Lab.); Hoshino, K. (Nisshin Steel Co. Ltd., Tokyo (Japan))

    1993-08-01

    Like the stainless steel and the stainless steel belt used in the rolling stock, materials treated by process and weld has a high strength and a good ductility, moreover, was expected that weld softening would not occurred. In this study, formation of the ultra-fine crystal grains based on the M to [gamma] reversion transformation of low C, Cr-Ni martensitic stainless steel and effect of Si on change of mechanical properties were investigated. A high-strength stainless steel with a good ductility and without weld softening was developed. Main results obtained are as follows: After a steel was cold-rolled, the reversion treatment at the region between As and Af temperatures (600 to 640[degree]C) was carried out, a duplex structure with diameter of the ultra-fine grains of about 0.5 micron meter that is composed of [gamma] phase concentrated Ni and sintered M phase was formatted, and excellent mechanical properties with a high strength and a good ductility could be obtained, diameter of reversion [gamma] grains was dependent on reversion temperature. Diameter of [gamma] grains became large, and more homogeneous and uniform at higher reversion temperature. 20 refs., 11 figs., 2 tabs.

  12. FY 1998 annual report on the development of plasma-aided surface treatment processes by in-situ controlling (second year); 1997 nendo in-situ seigyo ni yoru plasma riyo hyohi shori process no kaihatsu seika hokokusho (dai 2 nendo)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This R and D project is aimed at stable production of high-quality, important machine members, which are difficult to sufficiently achieve the required properties by a single material, by carburization while minimizing use of expensive alloy metals, where high-temperature carburizing time is reduced by a plasma-aided system to save energy, and, at the same time, the conventional oil-hardening system is replaced by a He gas cooling/recycling system to solve the environmental problems involved in the former. The exhaust gases released from the plasma-aided system are adequately treated to prevent the problems caused thereby. The conditions of the plasma itself and treated surfaces are sensed in-situ, and the data are fed back to the process controlling system, to keep the treated object stable and high in quality, while minimizing energy consumption. The FY 1998 efforts were directed to studies on methods for sensing the plasma and treated surfaces, and specifications of a mini-plant for the demonstration tests, and to collection of characteristic data for development of some new products to be produced. (NEDO)

  13. Reaction performance of methanation of carbon monoxide and carbon dioxide over supported ruthenium catalysts. ; Mainly on effects of remaining chlorine and dechlorination. Ruthenium tanji shokubaijo no issanka tanso oyobi nisanka tanso no methane ka no hanno tokusei. ; Shutoshite zanryu enso no eikyo to datsuenso shori no koka

    Energy Technology Data Exchange (ETDEWEB)

    Kasaoka, S.; Sasaoka, E.; Okazaki, Y.; Hanaya, M. (Okayama University, Okayama (Japan). Faculty of Engineering)

    1991-07-10

    An establishment of the methanation catalytic process is desired on CO and CO {sub 2} generated in coal gasification and other various processes. In this study as one reply to this requirement, Ru catalysts supported on ZrO {sub 2}, Al {sub 2} O {sub 3} ({theta}) and SiO {sub 2} were prepared, and the relationship between the reaction condition and the catalytic reaction performance was investigated, especially from a view to the effects of remaining chlorine in catalysts and dechlorination based on raw salt of Ru. Experiments were carried out using a flow fixed-bed reactor under an atmospheric temperature at mainly 120-350 {degree}C. The results are as follows: Knowledge was obtained about the amount of remaining chlorine after a hydrogen reduction treatment or after washing with warm water at 85 {degree}C; the effect of remaining chlorine one the catalytic activity was much larger for CO {sub 2} methanation than for CO methanation; the remaining chlorine suppresses the formation of carbonaceous species on the catalyst surface and decreases the catalytic activity; and Ru/ZrO {sub 2}, dechlorinated with water washing at 85 {degree}C is most active. 10 refs., 12 figs., 1 tab.

  14. Research cooperation promoting project in fiscal 1998. Research cooperation related to developing mine resources extraction and treatment technologies of environment harmonizing and high efficiency type; 1998 nendo kenkyu kyoryoku suishin jigyo. Kankyo chowagata kokoritsu kobutsu shigen chushutsu shori gijutsu no kaihatsu ni kansuru kenkyu kyoryoku

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    In order to realize more effective utilization of non-ferrous metal resources, joint research cooperation is made with the Republic of Kazakhstan. It is intended that valuable metals (gold, silver, copper, rare metals, and others) contained at large quantity in ore scraps generated in association with mine operation be extracted and recovered efficiently paying considerations to the environment. The treatment process consists of the following conception: raw materials such as ore scraps are leached by sulfuric acid and microorganisms to separate and recover gold and silver; the leach liquor containing valuable metals is extracted by using solvent and recovered of copper and rare metals via an electrolytic process; and the waste water is treated and discharged. Fiscal 1998 has performed studies on the wet treatment system at the site and in Japan, the gold and silver treatment, and the waste water treatment by using samples collected from the site in fiscal 1996. Based on the results of these fundamental studies, a pilot plant was built, and all of the facility fabrication was completed in fiscal 1998. Part of the facilities has been transported to the site. To drive the project forward effectively, materials and items of equipment required for the joint research were procured and transported to the country, and at the same time Kazakhstanian researchers were received in Japan for training. (NEDO)

  15. Report of the results of the fiscal 1997 regional consortium R and D project. Regional consortium energy field / Development of the plasma use surface treatment process by in-situ control (first fiscal year); 1997 nendo chiiki consortium kenkyu kaihatsu jigyo. Chiiki consortium energy bun`ya / in-situ seigyo ni yoru plasma riyo hyohi shori process no kaihatsu (daiichi nendo) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    The paper described the fiscal 1997 result of the development. To know of in-plasma phenomena such as carburization and nitriding, a basic plasma experimental device was fabricated for quantitative measurement of reaction activity species. For the study of reaction control between plasma and substrate, a rotary analyzer type ellipsometer was fabricated as a method to detect composition and thickness of the deposit on the substrate surface. For He gas cooling after carburization and hardening, basic specifications for He gas refining/circulating system were confirmed. For perfect non-hazardous processing of exhaust gas from plasma carburization furnace, conducted was the thermodynamic computation of the process. Priority in order of the functions to be possessed as specifications for basic design of mini plant is plasma carburization, He gas cooling, and in-situ measurement. To make the most of the plasma use surface treatment as substitutes for expensive alloy elements, sliding parts/die-cast mold raw materials were carburized to measure the hardness. The Cr carbide coating technology by plasma CVD is also under study as an application example except carburization. 47 refs., 59 figs., 31 tabs.

  16. Fiscal 1996 report on the results of the R and D of technology of high-level treatment/effective use of domestic/industrial wastes, etc. (for public); 1996 nendo Shin Energy Sangyo gijutsu Sogo Kaihatsu Kiko itaku seikatsu sangyo haikibutsu shori yuko riyo gijutsu kenkyu kaihatsu seika hokokusho (kokaiyo)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    For the purpose of reducing environmental loads of waste and effectively using resource by waste recycling, a study was conducted of high-level treatment/effective use technology for domestic/industrial wastes, etc. The paper reported the results of fiscal 1996. In the EcoCement producing technology using the synthetic urban type waste, EcoCement with stable quality was obtained using sewage sludge and industrial waste as raw materials. In the specified freon decomposition disposal technology, an experiment was carried out on durability, etc. of the processing unit. In the high speed/reduced smell biological garbage disposal technology, technology of fermenting disposal, etc. were established, and at the same time technology of making garbage compost was developed. In the technology to manufacture environment friendly type plastic containers, etc., a degradation behavior was grasped of degradable plastics in the compost. In the spread type waste plastic/thermal recycle technology, studied were a system to collect waste and a system to make waste solid fuel. Technology to recycle coolant freon was studied. 14 refs., 261 figs., 137 tabs.

  17. Fiscal 1998 R and D project on global environmental industrial technology. Research result report on DNA analysis and information processing technology for photosynthesis microorganisms (Development of CO{sub 2} fixation and effective use technology by using bacteria and algae); 1998 nendo chikyu kankyo sangyo gijutsu kenkyu kaihatsu jigyo. Kogosei biseibutsu nado DNA kaiseki joho shori gijutsu no kenkyu (saikin sorui nado riyo nisanka tanso koteika yuko riyo gijutsu kaihatsu) seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This report summarizes the fiscal 1998 research result on DNA analysis and information processing technology for photosynthesis microorganisms. On the study on DNA analysis technology by triple-strand formation method, as the comparison study result of a READ method, stable triple- strand formation method and hairpin method, a READ method showed the highest triple-strand formation efficiency for target DNA. On the study on accurate separation technology of specific genes, establishment of protocols was promoted for solid-phase probe technology, subtract technology and leveling technology. On the study on DNA microarray analysis technology by high-efficiency hybridization method, the analysis technology of genes by hybridization method using DNA chips is under investigation. In addition, the high- efficiency analysis technology of specific DNA segments by using an affinity sensor, and the high-accuracy cloning technology for DNA with altered primary structure were also studied. (NEDO)

  18. Development of coal liquefaction technologies (Part 3); Development of common base techniques (Part 4). Development and employment of evaluating approach to liquefied process. Development of data collecting and processing system for coal liquefaction process and etc. Sekitan ekika gijutsu kaihatsu (3); Kyotsu kiban gijutsu no kaihatsu nado (4). Ekika process no hyoka shuho no kaihatsu, unyo. Sekitan ekika process nado no data no shushu, Shori system

    Energy Technology Data Exchange (ETDEWEB)

    1989-09-01

    This research aims to develop the management system of informations concerning coal liquefaction process and etc., to develop data collecting and processing system on pilot plant and supporting researches and to effectively use data to advance to following step such as conceptural design for the demonstration plant. In addition, this research aims to collect many kinds of techniques obtained by the research and development and to arrange and promote the licensing system to practically use this system. Practical results in 1988 were as follows: Conceptural design on basic data base and retrieval or look up system on general technical informations were carried out to develop the data base system for coal liquefaction and to develop the data collecting and processing system for the coal liquefaction process and etc. Data locative leveling was carried out as the conceptural design for basic data base and the basic structures of hardware and software were made up as the basic design for the retrieval system of general technical informations. 4 figs., 1 tab.

  19. Fiscal 1996 international research cooperation project. Feasibility study of finding out the seeds of international joint research (technology for effective use of saturated hydrocarbon, technology for reducing excess of aromatic hydrocarbon, high-grade treatment technology of petroleum coke); 1996 nendo kokusai kenkyu kyoryoku jigyo. Kokusai kyodo kenkyu seeds hakkutsu no tame no FS chosa (howa tanka suiso no yuko riyo gijutsu, hokozoku tanka suiso no yojo taisaku gijutsu, sekiyu cokes no kodo shori gijutsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    This project is aimed at internationally cooperating in the R and D of industrial technology and improving industrial technology of Japan. For it, the following three technologies were investigated: (1) technology for effective use of saturated hydrocarbon, (2) technology for reducing excess of aromatic hydrocarbon, (3) high-grade treatment technology of petroleum coke. In (1), surveys were conducted of technologies of effective use of natural gas and effective use of C4 saturated hydrocarbon. Surveyed were a method for producing synthesis gas from natural gas, a technology to liquefy natural gas into fuel following the synthesis gas production process, a technology to liquefy natural gas into fuel without the synthesis gas production process, and the trend of effective use of C4 saturated hydrocarbon. In (2), surveys were made of process to reduce production of aromatic hydrocarbon as much as possible, process to effectively separate aromatic hydrocarbon, and process to convert excess aromatic hydrocarbon into polymer, etc. In (3), surveys were conducted on petroleum coke and pitch in terms of production methods, the supply/demand situation, property characteristics, usability to new fields, etc. 170 refs., 114 figs., 65 tabs.

  20. Up-scaled Teer-UDP850/4 Unbalanced Magnetron Deposition System Used for Mass-Production of CrTiAlN Hard Coatings

    Institute of Scientific and Technical Information of China (English)

    ZHANGGuo-jun; YANGShi-cai; JIANGBai-ling; BAILi-jing; CHENDi-chum; WENXiao-bin; TEERD.G.

    2004-01-01

    Up-sca]ed deposition process of Teer-UDP850/4 has been established and used for massive production of CrTiAlN hard coatings in applications of anti-wear, cutting and forming tools. This deposition system uses four magnetrons that are arranged by unbalanced magnets to fomt closed magnetic field enabling the system running in high current density. Elemental metals of Cr, Ti and Al are used as the target materials which are co-deposited with nitrogen forming nlultialloy nitride, nanoscale multi-layer or superlattice hard coatings. The stthstrate turntable is designed as planet rotation mechanism with three folds so that components or tools with complicate geometry can be uniformly coated onto all their surfaces and cutting edges. The pawer units for the magnetrons are straight dc whilst the substrate is biased by pulsed de. Two solid heaters are installed in the system to enable running a wide range of deposition temperature from 200℃ to 500℃. The pumping system is powerful that incorporated with a polycold to pump the system to a good vacuum in a very shori time. A front door and a movable substrate table are available to benefit easily loading and unloading. Deposition procedure. properties and performance of the coatings is also presented in this paper.

  1. To evaluate and compare the effect of different Post Surface treatments on the Tensile Bond Strength between Fiber Posts and Composite Resin.

    Science.gov (United States)

    Shori, Deepa; Pandey, Swapnil; Kubde, Rajesh; Rathod, Yogesh; Atara, Rahul; Rathi, Shravan

    2013-01-01

    Background: Fiber posts are widely used for restoration of mutilated teeth that lack adequate coronal tooth structure to retain a core for definitive restoration, bond between the fiber post and composite material depends upon the chemical reaction between the post surface and the resin material used for building up the core. In attempt to maximize the resin bonding with fiber post, different post surface conditioning is advocated. Therefore the purpose of the study is to examine the interfacial strength between fiber post and composite, as core build-up material after different surface treatments of fiber posts. Materials & Methods:Twenty fiber posts were split into four groups off five each according to different surface treatments viz. Group I-(Negative Control), Group II-Silanization (Positive control), Group III-(37% Phosphoric Acid & Silanization) ,Group IV- (10% Hydrogen Peroxide and Silanization). With the preformed plastic mould, a core of dual cure composite resin around the fiber post having the uniform thickness was created. Tensile bond strength of each specimen was measured under Universal Testing Machine (UTM) at the cross head speed of 3mm/min. Results: The results achieved with 10% Hydrogen peroxide had a marked effect on micro tensile bond strength values between the tested materials. Conclusion: Immense enhancement in the silanization efficiency of quartz fiber phase was observed with different surface chemical treatment of the resin phase of fiber posts with the marked increase in the micro-tensile bond strength between fiber post and composite core. How to cite this article: Shori D, Pandey S, Kubde R, Rathod Y, Atara R, Rathi S. To evaluate and compare the effect of different Post Surface treatments on the Tensile Bond Strength between Fiber Posts and Composite Resin. J Int Oral Health 2013; 5(5):27-32. PMID:24324301