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Sample records for agent ni yoru

  1. FY1995 community support by mobile agents; 1995 nendo mobile agent ni yoru community keisei shien

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The purpose is to develop fundamental technologies for navigation systems and mobile computing systems in museums, theme parks and cities. Concretely, we implement software agents into the mobile computing environment which consists of PHS, mobile computers and mobile robots, and realize various functions to access regional information. We have studied on Communityware which supports human activities and communities by using mobile agents implemented into mobile computers and town robots. The mobile agents, which intelligently process information obtained in physical and virtual worlds, access regional information which is omnipresent in the environment. With respect to the approach using mobile computers, we have provided one hundred mobile computers in the international conference on multiagent systems 1996 and carried out the first experimentation of mobile computing in the world. The mobile computer has two functions: Community Viewer which displays interactions between members of communities and Social Matchmaker which supports to hold meetings by searching for people who have common interests. With respect to the approach using town robots, we have developed a robot system which can robustly behave in a complex outdoor environment by using vision agents embedded in the environment. The system aims at support of people in streets. (NEDO)

  2. Hydrogenation of heteroaromatics by high pressure DTA techniques. 3; Koatsu DTA ho ni yoru hokozoku kagobutsu no suisoka (rutenium tanji shokubai ni yoru kakusuisoka datsu hetero hanno)

    Energy Technology Data Exchange (ETDEWEB)

    Yamamoto, M.; Yoshida, T. [Hokkaido National Industrial Research Institute, Sapporo (Japan); Kotanigawa, T. [Japan International Cooperation Agency, Tokyo (Japan)

    1996-10-28

    Ring-opening of heteroaromatics and heteroatom-removal reaction were studied experimentally using the acidic catalyst containing phosphoric acid for improvement of an upgrading method of coal derived oils. In experiment, some Ru-carrying metal oxide catalysts such as RMZ, RML and RMN catalyst, and MNP catalyst containing phosphoric acid were used as specimens. Nuclear hydrogenation reaction and hydro-denitrogenation reaction of dibenzothiophene and carbazole were compared with each other. The experimental results are as follows. Both RMN and RMNP catalysts offer a superior selectivity in nuclear hydrogenation reaction and hydro-denitrogenation reaction of carbazole. Although both catalysts offer an extremely high nuclear hydrogenation activity at 360{degree}C, these offer the high selectivity of denitrogenation products at 430{degree}C. In comparison of the activities of MN and MNP catalysts with the same Mn2O3:NiO ratio, MNP catalyst offers the higher denitrogenation activity than MN catalyst at 430{degree}C. 1 ref., 3 tabs.

  3. Amorphization of mixed Ni and Zr powders with Ni-rich compositions by mechanical alloying. Mechanical alloying ni yoru Ni oyobi Zr kongo funmatsu (Ni-rich sosei ryoiki) no hishoshitsuka

    Energy Technology Data Exchange (ETDEWEB)

    Asahi, N.; Habu, T.; Yoshii, T.; Haruyama, O. (Science University of Tokyo, Tokyo (Japan). Faculty of Scinece and Technology)

    1991-01-25

    Amorphous Ni {sub x} Zr {sub 100 {minus} x} alloy powders (x=75, 80, 85, and 90) were synthesized from pure crystalline powders of Ni and Zr through a mechanical alloying method by high-energy ball milling in an argon atmosphere. The alloying and amorphization process was investigated using X-ray diffractometer and differential scanning calorimeter. Consequently, the X-ray scattering vector of the broad amorphous peak for the mechanically alloyed Ni-Zr amorphous powders were identical with those of liquid quenched amorphous alloys of the same compositions, except for x=90. In the initial stage of mechanical alloying, Ni powders were observed to diffuse preferentially into Zr powders. The crystallization temperature and the crystallization enthalpy of the Ni-Zr amorphous powders as a function of Ni composition were also investigated. The crystallization enthalpy in the Ni {sub 90} Zr {sub 10} composition powders provided a much lower value than that of the other Ni-Zr compositions powders. 11 refs., 7 figs.

  4. Study of highly efficient power generation system based on chemical-looping combustion; Chemical loop nenshoho ni yoru kokoritsu hatsuden system no kaihatsu ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Ishida, S.; Suzuki, T.; Yamamoto, M. [Tokyo Institute of Technology, Tokyo (Japan). Research Laboratory of Resources Utilization

    1997-02-01

    This paper describes the research and development of power generation system by means of chemical-looping combustion. For this system, fuel flows in a reduction reactor and air flows in an oxidation reactor. These two flows are separated. As a result, recovery of CO2 without energy consumption, drastic improvement of power generation efficiency, and suppression of NOx emission are expected. To realize the above, two promising candidates, NiCoO2/YSZ and NiO2/NiAl2O4, have been found as recycle solid particles between the both reactors. These have excellent oxidation/reduction cycle characteristics. By these particles as well as the existing particle, NiO/YSZ, practical application of the chemical-looping combustion is realized. Besides LNG, coal and hydrogen were considered as fuels. When using coal or hydrogen, it was found that temperature of the reduction reactor should be increased the same as that of the oxidation reactor. This is a different point from a case using LNG as a fuel. 5 refs., 2 figs.

  5. Synthetic Ni3S2/Ni hybrid architectures as potential contrast agents in MRI

    Science.gov (United States)

    Ma, J.; Chen, K.

    2016-04-01

    Traditional magnetic resonance imaging (MRI) contrast agents mainly include superparamagnetic (SPM) iron oxide nanoparticle as T 2 contrast agent for liver and paramagnetic Gd (III)-chelate as T 1 contrast agent for all organs. In this work, weak ferromagnetic kale-like and SPM cabbage-like Ni3S2@Ni hybrid architectures were synthesized and evaluated as potential T 1 MRI contrast agents. Their relatively small r 2/r 1 ratios of 2.59 and 2.38, and high r 1 values of 11.27 and 4.89 mmol‑1 L s‑1 (for the kale-like and cabbage-like Ni3S2@Ni, respectively) will shed some light on the development of new-type MRI contrast agents.

  6. Synthetic Ni3S2/Ni hybrid architectures as potential contrast agents in MRI

    Science.gov (United States)

    Ma, J.; Chen, K.

    2016-04-01

    Traditional magnetic resonance imaging (MRI) contrast agents mainly include superparamagnetic (SPM) iron oxide nanoparticle as T 2 contrast agent for liver and paramagnetic Gd (III)-chelate as T 1 contrast agent for all organs. In this work, weak ferromagnetic kale-like and SPM cabbage-like Ni3S2@Ni hybrid architectures were synthesized and evaluated as potential T 1 MRI contrast agents. Their relatively small r 2/r 1 ratios of 2.59 and 2.38, and high r 1 values of 11.27 and 4.89 mmol-1 L s-1 (for the kale-like and cabbage-like Ni3S2@Ni, respectively) will shed some light on the development of new-type MRI contrast agents.

  7. Upgrading of coal-derived distillates over highly active NiW/Al[sub 2]O[sub 3] catalyst. Koseino NiW/Al2O3 shokubai ni yoru ekikayu no upgrading

    Energy Technology Data Exchange (ETDEWEB)

    Yanase, H.; Kameoka, T. (Catalysts and Chemicals Industry Co. Ltd., Tokyo (Japan)); Sato, T.; Yoshimura, Y.; Shimada, H.; Matsubayashi, N.; Nishijima, A. (National Chemical Laboratory for Industry, Tsukuba (Japan))

    1991-11-07

    In this report, upgrading of coal-derived distillates is investigated using highly active NiW/Al2O3 catalyst. For the experiments, Battle River coal-derived gas oil and Wandoan coal-derived kerosene were used. The catalyst was prepared by impregnating [gamma]-Al2O3 in the aqueous solution containing nickel and tungsten, which was subsequently dried and burned at 550 centigrade for one hour. As a consequence of the experiments, newly developed NiW/Al2O3 catalyst exhibited much higher hydrogenation and hydrodenitrogenation activities than commercially available catalysts for coal-derived kerosene and gas oil. Superior catalytic performance for the NiW/Al2O3 catalyst was obtained during short-term catalyst performance tests (500 to 1,000 hours). However, precise characterization revealed changes in sulfided state and local structure of tungsten sulfide on the catalyst, which suggests that there would be other possibility for improving catalytic performance. 1 ref., 4 figs., 2 tabs.

  8. Development of generator-cooling hydrogen purity improvement system using hydrogen absorbing alloy; Suiso kyuzo gokin ni yoru hatsudenkinai suiso jundo kojo system no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Nishimura, Y.; Sato, J.; Haruki, N.; Kogi, T.; Okuno, Y. [The Kansai Electric Power Co. Inc., Osaka (Japan); Takeda, H.; Wakisaka, Y. [The Japan Steel Works, Ltd., Tokyo (Japan); Fujita, T. [Mitsubishi Electric Corp., Tokyo (Japan)

    1997-01-31

    A generator-cooling hydrogen purity improvement system was developed by utilizing hydrogen absorbing and discharging functions of hydrogen storage alloy. For demonstration test with an actual machine, four elements, Ca, Ni, Mm and Al, were used as hydrogen storage alloys. To treat hydrogen gas with a wide range of purity and reduce hydrogen gas feed, flow operation for hydrogen purity improvement, batch operation, and recycle operation for maintaining the hydrogen purity were performed. As a result of the generator-cooling hydrogen purity improvement demonstration test, it was found that the hydrogen purity can be enhanced from 97.69% before operation to 99.9% after operation for 104 hours and to 99.95% after operation for 140 hours. The hydrogen recovery rates during flow test and batch test were between 92 and 95%. For the hydrogen purity maintaining test, it was confirmed that the high hydrogen purity of 99.9% has been continuously maintained for 140 days, and that the hydrogen recovery rate was over 99%. 2 refs., 15 figs., 3 tabs.

  9. Water cut-off construction for bulkhead of very deep waste treatment plant using premixed cohesive soil. Premix nenseido ni yoru daisuishin haikibutsu shorijo gogan no shisuiko

    Energy Technology Data Exchange (ETDEWEB)

    Iida, I. (Toa Corp., Tokyo (Japan))

    1994-03-25

    Recently waste treatment plants have been developed in the suburban coastal area or off shore, requiring controlled-type revetment or reclamation for the circumferential sea area. This report describes the outline of premix water cutoff construction having been applied to the center-partitioned revetment in the reclaiming construction work in Minami-Honmoku Pier Area, Yokohama. The premix water cut-off method is a construction method where packed sediment is mixed with a small amount of cement and a separation-preventive agent and then is thrown to develop ground. This time, to effectively re-use dredged soil and cohesive soil, these soils were mixed with a caking agent and placed onto the sea floor. The total length of construction was ca. 450m; the maximum water depth was 30m; and the placed amount was 79705m[sup 3]. Four 50m[sup 3]/h-class mud treating machines were mounted on two ships, to which a slurry plant ship and a mud treating plant were joined to make-up a fleet. The forced pump feed method was adopted for placing and construction was completed with a control system perfect in workmanship and quality. 15 figs., 6 tabs.

  10. 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)

  11. Wrong Forms of some Yorùbá Personal Names: Some Phonological and Sociolinguistic Implications

    Directory of Open Access Journals (Sweden)

    Reuben Olúwáfẹ́mi Ìkọ̀tún

    2014-12-01

    Full Text Available In this study, we examine the wrong forms of some Yorùbá sentences that have become personal names through compounding. The data were extracted from the Joint Admissions and Matriculation Board (JAMB lists of candidates that were considered for admission into three Nigerian Universities between the 2005 and 2010 academic sessions. The names extracted from that source were compared with names written in the staff lists of the three Universities in Nigeria. The wrongly written names were recorded on tapes and some native speakers were asked to listen to them to determine their correctness. We argue that wrong forms of some Yorùbá sentential/personal names are common occurrences and establish that they are traceable to the freedom granted by Yorùbá orthography developers. We also argue that, the confusion that results from the different spelling forms of some Yorùbá personal names is seriously observable in social interactions, labour market, schools or Colleges of Education/Universities, Embassies and Nigerian civil service both Federal and State and that court affidavits become imperative to authenticate or reconcile both the wrong and the correct forms for the purposes of admissions, appointments and overseas travelling documents. Similarly, we show that the position of the Yorùbá orthography developers has resulted in a loss of the actual pronunciation of some Yorùbá personal names which has severe implications for the semantic contents of the names as well as implications for the rich religious, cultural and philosophical heritage of the Yorùbá people.

  12. Synthesis and Electrochemical Characterization of Ni Nanoparticles by Hydrazine Reduction using Hydroxyethyl cellulose as Capping Agent

    International Nuclear Information System (INIS)

    The controlled-size synthesis of well-dispersed metal nanoparticles has been the aim of many research works during the last two decades. In this context, simple and controlled methods are the most suitable to obtain metal nanoparticles. The reduction of transition metal salts in solution is the most widely used method for generating colloidal suspensions of metals. In this work, nickel nanoparticles were synthesized from NiCl2·6H2O in an ethanol solution with hydrazine hydrate and an appropriate amount of NaOH in the presence of hydroxyethyl cellulose (HEC) used as a capping agent to avoid the coalescence of the nanostructures. Size effects on the nickel nanostructures were studied by varying the concentration of the reducing agent and temperature. The obtained nickel nanostructures were characterized by X-ray diffraction (XRD), showing a face-centered cubic (fcc) structure. Particle sizes from 7 to 13 nm were determined by the Scherrer equation. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed spherical sponge-like nanostructures formed by thin laminar structures. Additionally, infrared spectroscopy showed the presence of HEC functional groups on the surface of the nickel nanostructures after the purification step. Finally, the obtained Ni nanostructures were also characterized by electrochemical techniques and magnetic measurements to determine their electrocatalytic properties and magnetic response, respectively

  13. BTX production by in-situ contact reforming of low-temperature tar from coal with zeolite-derived catalysts; Zeolite kei shokubai wo mochiita sekitan teion tar no sesshoku kaishitsu ni yoru BTX no seisei

    Energy Technology Data Exchange (ETDEWEB)

    Matsunaga, T.; Fuda, K.; Murakami, K.; Kyo, M.; Hosoya, S.; Kobayashi, S. [Akita University, Akita (Japan). Mining College

    1996-10-28

    On BTX production process from low-temperature tar obtained by pyrolysis of coal, the effect of exchanged metallic species and reaction temperature were studied using metallic ion-exchanged Y-zeolite as catalyst. In experiment, three kinds of coals with different produced tar structures such as Taiheiyo and PSOC-830 sub-bituminous coals and Loy Yang brown coal were used. Y-zeolite ion-exchanged with metal chloride aqueous solution was used as catalyst. Zn{sup 2+}, Ni{sup 2+} and In{sup 3+} were used as metal ions to be exchanged. The experiment was conducted by heating a pyrolysis section up to 600{degree}C for one hour after preheating a contact reforming section up to a certain proper temperature. As a result, the Ni system catalyst was effective for BTX production from aromatic-abundant tar, while the Zn system one from lower aromatic tar. In general, relatively high yields of toluene and xylene were obtained at lower temperature, while those of benzene at higher temperature. 4 figs., 1 tab.

  14. Design of environment-friendly and next generation-type conversion system for unused carbon resources by developing highly functional materials; Kokino zairyo kaihatsu ni yoru kankyo chowagata jisedai miriyo tanso shigen tenkan system no kochiku

    Energy Technology Data Exchange (ETDEWEB)

    Wakabayashi, K.; Morooka, S.; Arai, Y. [Kyushu University, Fukuoka (Japan). Faculty of Engineering; Sakanishi, K. [Kyushu University, Fukuoka (Japan). Institute of Advanced Material Study

    1997-02-01

    Studies are conducted for the development of now-unused kinds of fossil carbon resources, such as low rank coal and heavy gravity crude oil, into higher-value liquid fuel. In the preliminary treatment process, the fossil carbon resources are dried by use of supercritical carbon dioxide, when it is found that the resources are disintegrated and water is desorbed. In a low rank coal liquefaction process using the NiMo/KB (Kefjen Black) catalyst, more than 60% is converted into oil, which rate is improved by use of the dual-temperature liquefaction process. This catalyst may be recovered by separation utilizing specific gravity difference. As a low temperature gasification catalyst, the alkaline carbonate-carried carbon catalyst is very quick at the initial stage of reaction. The perovskite-carried alkaline carbonate catalyst is high in carbon oxidizing/activating efficiency at low temperatures. The silica film deposited on an alumina-coated support tube is excellent in selectivity and speed as a hydrogen separating film, and a carbonized polyimide film as a carbon dioxide separating film. For the supercritical phase adsorption/separation of chemicals not to be distilled easily, the NaY-type zeolite functions effectively. Pd/ZrO2 serving as a carbon monoxide conversion catalyst enables the recovery of more MeOH when Pd grains are smaller in diameter.

  15. Preparation of biodegradable microcapsules with (W/O/W) emulsion in solvent evaporation; (W/O/W) fukugo emulsion wo mochiita ekichu kansoho ni yoru seibunkaisei microcapsule no chosei

    Energy Technology Data Exchange (ETDEWEB)

    Kiyoyama, S.; Shiomori, K.; Baba, Y.; Kawano, Y. [Miyazaki University, Miyazaki (Japan). Faculty of Engineering; Yoshizawa, H.; Hatate, Y. [Kagoshima University, Kagoshima (Japan). Faculty of Engineering

    1997-03-10

    This paper describes the preparation of biodegradable microcapsules which can control the shape and size of capsules and also can control the discharge of contents. The biodegradable polymers are frequently used as medical materials, and have attracted attention as base materials for drug prescription. At first, (W/O) emulsion was prepared by dispersing an inner aqueous ascorbic acid Mg salt solution into the organic solution consisting of biodegradable poly(3HV-co-3HB) membrane material and 1,2-dichloroethane. Then, (W/O/W) emulsion was prepared by dispersing the (W/O) emulsion into the outer aqueous phase consisting of interfacial active agent and dispersion stabilizer. The biodegradable microcapsules were prepared by the solvent evaporation process including heating, evaporation of solvent by air blasting, and vacuum drying. The stability of solvent evaporation depended on the concentration of membrane material and solvent removal rate. The surface characteristics of microcapsules were not affected by the volume fraction of the inner aqueous phase during the primary emulsion, but by the solvent removal rate and dispersion stabilizer. The surface characteristics could be controlled by the solvent evaporation with considering these factors. 12 refs., 11 figs., 2 tabs.

  16. Studies on water treatment by adsorption. Kyuchaku ni yoru mizushori

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, M. (The University of Tokyo, Tokyo (Japan). Institute of Industrial Science)

    1994-06-05

    This paper summarizes studies on the water treatment by adsorption, as for the adsorption during water treatment, reactivation of activated charcoal, and clarification of heating process. Reactivation of activated charcoal for the water treatment is carried out through drying in the heating furnace. Basic problems are the recovery degree of adsorption performance of reactivated activated charcoal and the recovery yield. Behavior of the activated charcoal in the heating reactivation furnace is divided into three stages including drying process, heating process, and gasification process. Among these processes, behaviors of organic matters during heating process are described. Thermogravimetric analyses (TGA) were conducted for activated charcoals adsorbing various organic matters in aqueous solutions. Three types of organic matters were classified from the TGA pattern, i.e., organic matters with relatively low boiling point (type-I), organic matters with higher boiling point (type-II), and phenol and lignin (type-III). Organic matters belonging to type-I and type-II are desorbed or decomposed, to be disappeared. Effectiveness of alkali cleaning is suggested for the type-III organic matters. 3 refs., 5 figs.

  17. The effect of process control agent on the structure and magnetic properties of nanocrystalline mechanically alloyed Fe–45% Ni powders

    Energy Technology Data Exchange (ETDEWEB)

    Gheisari, Kh., E-mail: khgheisari@scu.ac.ir [Department of Materials Science and Engineering, Faculty of Engineering, Shahid Chamran University, Ahvaz (Iran, Islamic Republic of); Javadpour, S. [Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz (Iran, Islamic Republic of)

    2013-10-15

    In this study, nanocrystalline Fe-45 wt% Ni alloy powders were prepared by mechanical alloying via high-energy ball milling. The effect of adding stearic acid as a process control agent (PCA) on the particle size, structure and magnetic properties of Fe-45 wt% Ni alloy powders have been studied by X-ray diffraction, scanning electron microscope and vibrating sample magnetometer measurements. The results show that the addition of 1 wt% PCA causes fine uniform spherical powder particles of the fcc γ-(Fe, Ni) phase to be formed after 48 h milling time. It is also found that crystallite size, lattice strain and content of γ-(Fe, Ni) phase are three of the most important variables that are significantly affected by PCA content and can influence the magnetic properties. - Highlights: • Different amount of stearic acid as a PCA was used during milling. • Particle size and crystallite size decrease with increasing PCA content. • The addition of 1 wt% PCA leads to a good combination of structure and magnetic properties.

  18. The effect of chelating/combustion agent on catalytic activity and magnetic properties of Dy doped Ni-Zn ferrite

    Energy Technology Data Exchange (ETDEWEB)

    Samoila, P.; Slatineanu, T. [Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Boulevard 700506 (Romania); Postolache, P. [Faculty of Physics, Alexandru Ioan Cuza University of Iasi, 11 Carol I Boulevard 700506 (Romania); Iordan, A.R. [Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Boulevard 700506 (Romania); Palamaru, M.N., E-mail: palamaru@uaic.ro [Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol I Boulevard 700506 (Romania)

    2012-09-14

    The spinel ferrite Ni{sub 0.8}Zn{sub 0.2}Fe{sub 1.98}Dy{sub 0.02}O{sub 4} was prepared by sol-gel low temperature autocombustion method using four different chelating/combustion agents: citric acid, tartaric acid, urea and cellulose. Infrared spectroscopy (IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) specific surface area measurement, the catalytic H{sub 2}O{sub 2} decomposition and the magnetic behavior were employed to investigate the influence of the combustion agents on structural characteristics, catalytic activity and magnetic properties. Spinel-type phase in the nano-scale domain was accomplished during sol-gel synthesis and was confirmed by XRD and IR. The best catalytic activity is belonging to the sample obtained using urea, which shows the smallest grain size (SEM), the highest specific surface area (BET measurements) and DyFeO{sub 3} phase (XRD), while ferrimagnetic behavior prevails for all the samples independently of fuel agent. Highlights: Black-Right-Pointing-Pointer Ni-Zn ferrite doped with Dy as catalyst and magnetic material. Black-Right-Pointing-Pointer Four chelating/combustion agents were used in sol-gel method. Black-Right-Pointing-Pointer Citric acid and cellulose allowed spinel monophase formation confirmed by XRD. Black-Right-Pointing-Pointer Catalytic activity of ferrite samples is affected by synthesis conditions. Black-Right-Pointing-Pointer Magnetic behavior is not changed significantly as a function of fuel agent.

  19. Chitosan-bound pyridinedicarboxylate Ni(II) and Fe(III) complex biopolymer films as waste water decyanidation agents.

    Science.gov (United States)

    Adewuyi, Sheriff; Jacob, Julianah Modupe; Olaleye, Oluwatoyin Omolola; Abdulraheem, Taofiq Olanrewaju; Tayo, Jubril Ayopo; Oladoyinbo, Fatai Oladipupo

    2016-10-20

    Chitosan is a biopolymer with immense structural advantage for chemical and mechanical modifications to generate novel properties, functions and applications. This work depicts new pyridinedicarboxylicacid (PDC) crosslinked chitosan-metal ion films as veritable material for cyanide ion removal from aqueous solution. The PDC-crosslinked chitosan-metal films (PDC-Chit-Ni(II) and PDC-Chit-Fe(III)) were formed by complexing PDC-crosslinked chitosan film with anhydrous nickel(II) and iron(III) chloride salts respectively. The PDC-Chit and its metal films were characterized employing various analytical and spectroscopic techniques. The FT-IR, UV-vis and the XRD results confirm the presence of the metal ions in the metal coordinated PDC-crosslinked chitosan film. The surface morphological difference of PDC-Chit-Ni(II) film before and after decyanidation was explored with scanning electron microscopy. Furthermore, the quantitative amount of nickel(II) and iron(III) present in the complex were determined using Atomic Absorption Spectrophotometer as 32.3 and 37.2μg/g respectively which portends the biopolymer film as a good complexing agent. Removal of cyanide from aqueous solution with PDC-Chit, PDC-Chit-Ni(II) and PDC-Chit-Fe(III) films was studied with batch equilibrium experiments. At equilibrium, decyanidation capacity (DC) followed the order PDC-Chit-Ni (II)≈PDC-Chit-Fe(III)>PDC-Chit. PDC-Chit-Ni(II) film gave 100% CN(-) removal within 40min decyanidation owing to favorable coordination geometry. PMID:27474675

  20. Influence of complexing agent on the growth of chemically deposited Ni3Pb2S2 thin films

    Directory of Open Access Journals (Sweden)

    Ho Soonmin

    2014-09-01

    Full Text Available Ni3Pb2S2 thin films were prepared by chemical bath deposition method. Here, the objective of this research was to investigate the influence of complexing agent on the properties of films.These films were characterized using atomic force microscopy, UV-Visible spectro photometer and X-ray diffraction. It was found that, as the concentration of tartaric acid increased, film thickness increased, but, the band gap reduced. For the films prepared using 0.1M of tartaric acid, the films were uniform and completely covered the substrates.

  1. Characterization of Cu–Ni nanostructured alloys obtained by a chemical route. Influence of the complexing agent content in the starting solution

    Energy Technology Data Exchange (ETDEWEB)

    Carreras, Alejo C., E-mail: acarreras@famaf.unc.edu.ar [Instituto de Física Enrique Gaviola (IFEG), Facultad de Matemática, Astronomía y Física, Universidad Nacional de Córdoba—CONICET, Medina Allende s/n, Ciudad Universitaria, 5016 Córdoba (Argentina); Cangiano, María de los A.; Ojeda, Manuel W.; Ruiz, María del C. [Instituto de Investigaciones en Tecnología Qumica (INTEQUI), Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis—CONICET, Chacabuco y Pedernera, 5700 San Luis (Argentina)

    2015-03-15

    The influence of the amount of complexing agent added to the starting solution on the physicochemical properties of Cu–Ni nanostructured alloys obtained through a chemical route, was studied. For this purpose, three Cu–Ni nanoalloy samples were synthesized by a previously developed procedure, starting from solutions with citric acid to metal molar ratios (C/Me) of 0.73, 1.00 and 1.50. The synthesis technique consisted in preparing a precursor via the citrate-gel method, and carrying out subsequent thermal treatments in controlled atmospheres. Sample characterization was performed by scanning electron microscopy, X-ray microanalysis, X-ray diffraction, transmission electron microscopy, X-ray nanoanalysis and electron diffraction. In the three cases, copper and nickel formed a solid solution with a Cu/Ni atomic ratio close to 50/50, and free of impurities inside the crystal structure. The citric acid content of the starting solution proved to have an important influence on the morphology, size distribution, porosity, and crystallinity of the Cu–Ni alloy microparticles obtained, but a lesser influence on their chemical composition. The molar ratio C/Me = 1.00 resulted in the alloy with the Cu/Ni atomic ratio closest to 50/50. - Highlights: • We synthesize Cu–Ni nanoalloys by a chemical route based on the citrate-gel method. • We study the influence of the complexing agent content of the starting solution. • We characterize the samples by electron microscopy and X-ray techniques. • Citric acid influences the shape, size, porosity and crystallinity of the alloys.

  2. Characterization of Cu–Ni nanostructured alloys obtained by a chemical route. Influence of the complexing agent content in the starting solution

    International Nuclear Information System (INIS)

    The influence of the amount of complexing agent added to the starting solution on the physicochemical properties of Cu–Ni nanostructured alloys obtained through a chemical route, was studied. For this purpose, three Cu–Ni nanoalloy samples were synthesized by a previously developed procedure, starting from solutions with citric acid to metal molar ratios (C/Me) of 0.73, 1.00 and 1.50. The synthesis technique consisted in preparing a precursor via the citrate-gel method, and carrying out subsequent thermal treatments in controlled atmospheres. Sample characterization was performed by scanning electron microscopy, X-ray microanalysis, X-ray diffraction, transmission electron microscopy, X-ray nanoanalysis and electron diffraction. In the three cases, copper and nickel formed a solid solution with a Cu/Ni atomic ratio close to 50/50, and free of impurities inside the crystal structure. The citric acid content of the starting solution proved to have an important influence on the morphology, size distribution, porosity, and crystallinity of the Cu–Ni alloy microparticles obtained, but a lesser influence on their chemical composition. The molar ratio C/Me = 1.00 resulted in the alloy with the Cu/Ni atomic ratio closest to 50/50. - Highlights: • We synthesize Cu–Ni nanoalloys by a chemical route based on the citrate-gel method. • We study the influence of the complexing agent content of the starting solution. • We characterize the samples by electron microscopy and X-ray techniques. • Citric acid influences the shape, size, porosity and crystallinity of the alloys

  3. Liberation of methyl acrylate from metallalactone complexes via M-O ring opening (M = Ni, Pd) with methylation agents

    KAUST Repository

    Lee, S. Y Tina

    2013-01-01

    Ring opening of various nickela- and palladalactones induced by the cleavage of the M-O bond by methyl trifluoromethanesulfonate (MeOTf) and methyl iodide (MeI) is examined. Experimental evidence supports the mechanism of ring opening by the alkylating agent followed by β-H elimination leading to methyl acrylate and a metal-hydride species. MeOTf shows by far higher efficiency in the lactone ring opening than any other methylating agent including the previously reported methyl iodide. © 2013 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

  4. Faults survey by 3D reflection seismics; Sanjigen hanshaho jishin tansa ni yoru danso chosa

    Energy Technology Data Exchange (ETDEWEB)

    Tsuchiya, T.; Ejiri, T.; Yamada, N.; Narita, N.; Aso, H.; Takano, H.; Matsumura, M. [Dia Consultants Company, Tokyo (Japan)

    1996-10-01

    This paper describes fault survey by 3D seismic reflection exploration. Survey has been conducted mainly at flat land area without pavement not in urban area in Japan. Subsurface structure is complicated with intersecting multiple faults. In this area, a lot of geological investigations have been done prior to the seismic reflection exploration. Fairly certain images of faults have been obtained. However, there were still unknown structures. Survey was conducted at an area of 170m{times}280m in the CDP range. Measurements were carried out by using 100 g of dynamite per seismic generation point combined with 40 Hz velocity geophones. Fixed distribution consisting of lattice points of 12{times}12 was adopted as an observation method. In and around the lattice, a great number of explosions were carried out. The CDP stacking method and the method of migration after stacking were used for the data processing. The 3D structures of six horizons and five faults could be interpreted. Interpreted horizons were well agreed with the logging results. 3 figs.

  5. Depolymerization of coal by oxidation and alkylation; Sanka bunkai to alkyl ka ni yoru sekitan kaijugo

    Energy Technology Data Exchange (ETDEWEB)

    Tomita, H.; 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

    Change in depolymerization degree and coal structure was studied for depolymerization treatment of coal in various alcohol containing aqueous hydrogen peroxide. In experiment, the mixture of Yallourn coal, alcohol and aqueous hydrogen peroxide was agitated in nitrogen atmosphere of normal pressure at 70{degree}C for 12 hours. As the experimental result, the methanol solubility of only 5% of raw coal increased up to 35.2% by hydrogen peroxide treatment, while the yield of insoluble matters also decreased from 94% to 62%. Most of the gas produced during treatment was composed of inorganic gases such as CO and CO2, and its carbon loss was extremely decreased by adding alcohol. From the analytical result of carbon loss in hydrogen peroxide treatment, it was clarified that alkylation advances with introduction of alkyl group derived from alcohol into coal by hydrogen peroxide treatment under a coexistence of alcohol, and depolymerization reaction of coal itself is thus promoted by alcohol. 4 refs., 7 figs., 1 tab.

  6. New junction method of plastic by ultrasonic wave; Choonpa ni yoru plastic no shinsetsugoho

    Energy Technology Data Exchange (ETDEWEB)

    Kaneko, S. [Shibaura Institute of Technology, Tokyo (Japan). Faculty of Engineering

    1996-05-01

    This paper describes three types of new junction methods for plastic in which ultrasonic energy is used. The node junction method by longitudinal vibration is based on the feature that the heat generation by ultrasonic energy is high in the node of amplitude distribution by vibration of a joined object. An impedance matching section is set among the tool, joined object, and jig, and the junction place is set in the node position of amplitude by longitudinal vibration to improve the efficiency. For the junction of a vessel cover, the power and operation efficiencies were improved. The junction method by torsional vibration uses torsional vibration instead of longitudinal vibration. The manufactured device has the characteristics that the sound output is 40 W when the vibration rate of a torsional vibrator is 1.61 m/s. In this case, the electric sound exchange efficiency is 92% at maximum. The junction of a tetrafluoroethylene sheet that is difficult in a longitudinal vibration system was tried as a preliminary experiment. As a result, the information on junction was obtained. In the junction method by a focusing ultrasonic wave, ultrasonic energy of several megahertzs is focused for junction. A PZT electrostrictive spherical vibrator is used. Junction is carried out in the focal area. The junction strength increases. 1 ref., 5 figs.

  7. Adsorption of rare earth metal ion by algae. Sorui ni yoru kidorui ion no kyuchaku

    Energy Technology Data Exchange (ETDEWEB)

    Kuwabara, T.; Yazawa, A. (Miyagi National College of Technology, Miyagi (Japan))

    1994-02-25

    This paper reports the result of investigations on adsorption of rare earth metal ion by using algae, and adsorption of different metal ions by using egg white and soy bean protein. Rare earth metal ion is adsorbed at a considerably high rate with alga powder of different kinds. The adsorption has been judged to be cation exchange reactive adsorption, while with use of spirulina and chlorella a maximum value of adsorption rate has been observed at pH from 3 to 4.5. Therefore, selective adsorption and separation of metal ions other than rare earth metal ion has become possible. When the blue pigment extracted from spirulina, the spirulina blue, is used, the rare earth metal ion had its selective adsorption and separation performance improved higher than using spirulina itself at pH from 3 to 4.5. As a result of adsorption experiment using egg white and soy bean protein, it has been found that the metal ion adsorption behavior of the spirulina blue depends on coagulative action of protein structure to some extent. However, the sharp selective adsorption performance on rare earth metal ion due to particular pH strength has been found because of actions unique to the pigment structure of phycocyanin, a major component in the spirulina blue. 7 refs., 19 figs.

  8. Heightening in efficiency of biological treatment by additives. Tenkazai ni yoru seibutsu shori no koritsuka

    Energy Technology Data Exchange (ETDEWEB)

    Ishikawa, M. (Fukui Institute of Technology, Fukui (Japan))

    1991-11-01

    The activated sludge process and other biological treatments, though utilized for most sewerage and drainage water disposals, often necessitate the maintenance to be managed with a professional knowledge so that confrontation is oftem impossible with trouble in management. In the present report, different basic studies are to be introduced of microbial activation by an addition with saponin. Saponin'', etymologically identical with savon'' and soap'', has been being used as natural cleaner, emulsifier and foamer in South America and Europe since olden times, and is used also for the processed food and potable water in the USA. The present experiment concluded that, in case of using it as microbial activator, the activated sludge can be considerably increased in load quantity of disposal by the heightening in oxygen-supplying power, high concentration microbial maintenance, microbial activation, etc. In the future, there will remain many problems unsolved such as what is the optimized condition for the addition depending upon the condition of base material. 3 refs., 6 figs., 1 tab.

  9. Energy saving by regenerative burner; Rigene burner ni yoru sho energy

    Energy Technology Data Exchange (ETDEWEB)

    Nagai, S. [Chugai Ro Co. Ltd., Osaka (Japan)

    2000-03-01

    Described are the characteristics of a regenerative burner (RB) and some important respects to consider before its employment. In this burner system, a set of two burners are operated, with one burning and the other sucking gas out of the furnace. The roles are switched over between the two burners every minute or every tens of seconds, and the repetition of heat accumulation and radiation by the heat accumulating bodies in the heat accumulators results in an air temperature which is near the gas temperature in the furnace. An optimum switchover time is determined by the make, or the specific heat and weight, of the heat accumulating bodies. The configuration may be effectively employed in the modification of existing furnaces (1) when treatment capacity improvement is required or (2) when sufficient waste heat recovery is impossible. In the case of (1), an increase in combustion will be mandatory for capacity enhancement. Refurbishment to increase combustion, however, will not be required when RB is installed, and this enables capacity improvement while maintaining or enhancing energy saving performance at a low cost. In the case of (2), at a steel-making plant where recovery of waste heat is difficult because a ladle preheater or tandish preheater has no flue, effective heat recovery will be realized if RB is installed. (NEDO)

  10. Infrared sensing by semiconducting ceramic monofiber. Handotai ceramic tansen prime i ni yoru sekigaisen kanchi

    Energy Technology Data Exchange (ETDEWEB)

    Muto, N.; Miyayama, M.; Yanagida, H. (Univ of Tokyo, Tokyo (Japan). Research Center for Advanced Science and Tech.); Mori, N.; Kajiwara, T. (Sogo Keibi-Hosho Co. Ltd., Tokyo (Japan)); Urano, A.; Ichikawa, H.; Imai, Y. (Nippon Carbon Co. Ltd., Tokyo (Japan))

    1991-07-01

    A study was conducted on the IR beam sensor characteristics of a thermal IR-sensor using a semiconductor ceramic monofiber of SiC and PAN-based carbon. In the case of using a SiC monofiber, IR-beam was detected at a rapid response of 1.6ms of thermal time constant. Using a PAN-based carbon monofiber having at least 200 ohm-cm specific resistance, detection of static and moving human body could be made. In the case of using a monofiber, thermal time constant increases by the increase of the fiber diameter, this constant can be controlled by changing the fiber diameter. The output voltage increases by the increase of a radiation energy and the decrease of the surrounding temperature. Similar trend was observed as forecast by a theoretical formula. According to this study, the IR-beam sensor, which uses a semiconductor ceramic fiber, is a practical compact sensor, and as a position information is available by the type of the fiber arrangement, the semiconductor ceramic fiber is promising as a new thermal IR sensor material. 9 refs., 5 figs.

  11. Point-to-point microwave power transmission experiment; Maikuroha ni yoru denryoku yuso no kiso kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Shimokura, N.; Kirihara, T. [Kansai Electric Power Co. Inc., Osaka (Japan)

    1997-09-30

    In order to demonstrate the power transmission using microwave and arrange advantages and problems in the wireless power transmission, field tests of point-to-point power transmission were conducted. Microwave frequency of 2.45 GHz was used, which is assigned as the industrial, scientific and medical frequency. The transmission system is composed of generator, director tube, primary radiator, and transmission antenna. The maximum 5 kW of microwave power can be transmitted by combining a 3 m-diameter parabolic antenna and a magnetron. The receiving system is composed of devices called as RECTENNA (rectifying antenna). A large capacity and high efficiency RECTENNA was developed, by which the maximum 2.5 W of input power per single device can be provided. As a result of the experiments, efficiency at the transmission side was over 70%, and RF-DC efficiency at the receiving side was about 51%. At the open-air test site, however, the total efficiency of only 14.8% could be obtained. 8 refs., 12 figs.

  12. Energy transmission using microwaves and its possibility. Maikuroha ni yoru energy yuso to sono kanosei

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, H.; Shinohara, N. (Kyoto University, Kyoto (Japan))

    1993-09-01

    Transmitting of electric energy in the form of electromagnetic waves is a century-old idea, which has reached its final step of realization at last. This paper describes a review and future prospects on electric power transmitting technologies using microwaves (a wavelength of 12 cm is thought as the most promising candidate). Electric power was transmitted successfully to a flying helicopter in the U.S.A. in 1964. Transmission of 30-kW power was performed in 1975 to a power receiving rectenna (an antenna with microwave receiving rectification circuit) placed 1.6 tm away using a parabola as a transmitting antenna. These studies were carried over to the investigative studies on space power stations (SPS). This is a conception to install a static satellite equipped with a huge solar cell array in the sky of about 36,000 km high to generate power, convert the power to microwaves, and transmit the power of ten million kilowatt class to the ground. A number of results of advanced experiments have been obtained in Japan using rockets or aircraft. 26 refs., 5 figs.

  13. 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.

  14. Groundwater exploration by self-potential method; Shizen den`iho ni yoru chikasui tansa

    Energy Technology Data Exchange (ETDEWEB)

    Onaru, I.; Irie, S.; Mizunaga, H.; Ushijima, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1997-05-27

    This paper describes results measured from the field experiments and data analysis of the groundwater exploration by self-potential method. The field survey was conducted in the vicinity of spring water source in the suburbs of Fukuoka City. For the field experiments, potential differences from the standard potential electrode set at the distance about 200 m were measured at multi-points, simultaneously. For the laboratory experiments, assuming that the groundwater flows in a permeable layer, streaming potential change was observed against the changes of flow rate and electrical conductivity. Thus, the generation of streaming potential was investigated. For the experiment using specimens obtained at the spring water source, the potential changed to negative and was stabilized in around -80 mV after 15 minutes. Numerical simulation was conducted by means of the three-dimensional finite difference method using parameters obtained from the laboratory experiments. From these results, the groundwater flow image could be obtained. It was also confirmed that the self-potential observed in the spring water source area was caused by the streaming potential. 11 refs., 9 figs.

  15. Continuous gravity monitoring of geothermal activity; Renzoku juryoku sokutei ni yoru chinetsu katsudo no monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Sugihara, M. [Geological Survey of Japan, Tsukuba (Japan)

    1997-05-27

    To clarify the geothermal activity in the geothermal fields in New Zealand, gravity monitoring was conducted using SCINTREX automatic gravimeter. The measurements were conducted between the end of January and the beginning of March, 1996. Firstly, continuous monitoring was conducted at the standard point for about ten days, and the tidal components were estimated from the records. After that, continuous monitoring was conducted at Waimangu area for several days. Continuous monitoring was repeated at the standard point, again. At the Waimangu area, three times of changes in the pulse-shape amplitude of 0.01 mgal having a width of several hours were observed. For the SCINTREX gravimeter, the inclination of gravimeter is also recorded in addition to the change of gravity. During the monitoring, the gravimeter was also inclined with the changes of gravity. This inclination was useful not only for the correction of gravity measured, but also for evaluating the ground fluctuation due to the underground pressure source. It is likely that the continuous gravity monitoring is the relatively conventional technique which is effective for prospecting the change of geothermal reservoir. 2 figs.

  16. Three dimensional wavefield modeling using the pseudospectral method; Pseudospectral ho ni yoru sanjigen hadoba modeling

    Energy Technology Data Exchange (ETDEWEB)

    Sato, T.; Matsuoka, T. [Japan Petroleum Exploration Corp., Tokyo (Japan); Saeki, T. [Japan National Oil Corp., Tokyo (Japan). Technology Research Center

    1997-05-27

    Discussed in this report is a wavefield simulation in the 3-dimensional seismic survey. With the level of the object of exploration growing deeper and the object more complicated in structure, the survey method is now turning 3-dimensional. There are several modelling methods for numerical calculation of 3-dimensional wavefields, such as the difference method, pseudospectral method, and the like, all of which demand an exorbitantly large memory and long calculation time, and are costly. Such methods have of late become feasible, however, thanks to the advent of the parallel computer. As compared with the difference method, the pseudospectral method requires a smaller computer memory and shorter computation time, and is more flexible in accepting models. It outputs the result in fullwave just like the difference method, and does not cause wavefield numerical variance. As the computation platform, the parallel computer nCUBE-2S is used. The object domain is divided into the number of the processors, and each of the processors takes care only of its share so that parallel computation as a whole may realize a very high-speed computation. By the use of the pseudospectral method, a 3-dimensional simulation is completed within a tolerable computation time length. 7 refs., 3 figs., 1 tab.

  17. Clarification of SSR mitigation mechanism of TCSC; TCSC ni yoru SSR kaihi kiko no kaimei

    Energy Technology Data Exchange (ETDEWEB)

    Kakimoto, N.; Iida, A.; Seki, M.; Minoyama, K.; Takuma, T. [Kyoto University, Kyoto (Japan)

    1997-01-20

    Thyristor controlled series capacitor (TCSC) is considered to be effective not only for flow control and stabilization of power systems, but also for mitigation of subsynchronous resonance (SSR). This paper clarifies SSR mitigation mechanism of TCSC. First, we show by time simulations that SSR appears and disappears depending on the firing angle of TCSC. Next, we show that its frequency characteristics varies much with the firing angle. Further, we show that SSR occurs in TCSC-compensated systems as well as in conventional series-capacitor compensated systems when 60 Hz minus an electrical resonance frequency of a transmission system coincides with a tortional oscillation frequency of a generator-turbine shaft. TCSC can avert SSR by changing its firing angle and by shifting the electrical resonance frequency. Next, we propose an equivalent circuit of TCSC which consists of a series capacitor in parallel with a resistor and a reactor. We adjust its parameters so that it shows frequency characteristics same as TCSC. We apply it to time simulations to see if it work equivalently as TCSC. Finally, we do eigenvalue analysis with the equivalent circuit. We can get results corresponding to the time simulations. 11 refs., 10 figs., 5 tabs.

  18. Active control of aerodynamic noise; Active control ni yoru furyoku soon no seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Nishimura, M. [Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)

    1996-10-01

    This paper introduces summary and examples of active noise control (ANC) and active flow control (AFC) as the aerodynamic noise control techniques. The ANC is a technique to generate noise of a reverse phase which cancels the original noise. Noise reduced especially effectively by the ANC is noise from fans and ducts used for engine air supply and exhaust. The ANC is effective in low frequencies, and when used with a passive method, a compact exhaust silencer can be realized, which has high noise reducing performance over the whole frequency band and has low pressure loss. Signal processing in active noise reduction system is always so adjusted that noise is discharged from a secondary noise source in which signals detected by a detection microphone is given a digital filter treatment, and output from an error microphone is minimized. The AFC has been incapable of realizing a reverse phase over a wide frequency band when depended on analog treatment. However, the authors have developed an adaptive type feedback control system, and verified that the system can be applied to any frequency variation and control it in a stable manner. 15 refs., 9 figs., 1 tab.

  19. Foods hygiene management according to HACCP.; HACCP ni yoru shokuhin eisei kanri

    Energy Technology Data Exchange (ETDEWEB)

    Seki, T. [Niigata Enginering Co., Ltd., Tokyo (Japan)

    2000-11-01

    New foods hygiene management system HACCP(Hazard Analysis and Critical Control Point) was explained, which prevents food poisoning. Followings are described; (1) Outline of HACCP, (2) History of HAPPC, (3) Process to perform HACCP, (4) Infrastructure for HACCP, (5) How to promote HACCP, (6) Certification system in Japan. HACCP secures the safety in foods hygiene by making rules of Critical Control Points (CCP) on foods hygiene and by administrating strictly their performance. Details of works, frequency and person in charge of the work and methods to confirm and record the work are prescribed in PP (Prerequisite Program) and SSOP (Sanitation Standard Operation Procedure). (NEDO)

  20. Evaluation of water treatments by bioassays; Bioassay ni yoru mizushori no hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, M.; Kim, B.; Sohn, J.; Sakai, Y.; Sakoda, A. [The University of Tokyo, Tokyo (Japan). Institute of Industrial Science

    1998-03-01

    Investigations were made by using agricultural chemical added waters as model waters on change in general cell toxicity and mutagenicity as a result of giving activated carbon treatment in addition to ozone treatment. Seven kinds of agricultrual chemicals were selected, and each was added into specified groundwaters so that the waters come to specified concentrations determined from a capacity action curve of TIG-1 cell (a somatic cell greater by two times than normal human embryo) by using acid phosphate assay to make the model waters. For the mutagenicity test and the general cell toxicity test, Salmonella bacilli and TIG-1 cells were used. This paper presents experimental results on three kinds of agricultural chemicals (Thiobencarb, Dichborvos, and Fenitrothion). It indicates that no correlation was recognized between the cell toxicity and the mutagenicity when ordinary ozone treatment and activated carbon treatment were used; and change in technical product concentrations of the agricultural chemicals due to lapse of the ozone treatment time did not correspond with change in the mutagenicity and cell toxicity. 7 refs., 8 figs.

  1. Laser material purification of neodymium. Hikari reiki seiseiho ni yoru neodymium no kojundoka

    Energy Technology Data Exchange (ETDEWEB)

    Ogawa, Y.; Ozaki, T.; Yoshimatsu, S. (National Research Institute for Metals, Tokyo (Japan)); Chiba, K.; Umeda, H.; Saeki, M. (Nippon Steel Corp., Tokyo (Japan))

    1991-05-20

    Selective photoexcitation and photoionization of neodymium atoms were studied basically by using laser. Also, using their properties, feasibility of laser material purification (LPM) technology in gaseous phase was presented. In the selective 3-step ionization, laser beam with two kinds of proper wave length causes resonance exitation of the target element, which goes up to the excitation level of the first step, and the element is ionized by the second laser beam and the third laser beam. The 3-step ionization scheme by a single wave length laser beam of 577.612nm was used for the ionization of Nd. Nd ionized selectively by laser beam was recovered as thin layer at the negative potential side of plane electrodes placed at both sides of the laser irradiation area. In the layer formed by the TPD technology with this scheme, it is possible to decrease impuritis such as Pr by 1/16 and to form highly purified thin layer. 13 refs., 12 figs., 1 tab.

  2. Surface photo reaction processes using synchrotron radiation; Hoshako reiki ni yoru hyomenko hanno process

    Energy Technology Data Exchange (ETDEWEB)

    Imaizumi, Y. [Tohoku University, Sendai (Japan). Institute for Materials Research; Yoshigoe, A. [Toyohashi University of Technology, Aichi (Japan); Urisu, T. [Toyohashi University of Technology, Aichi (Japan). Institute for Molecular Science

    1997-08-20

    This paper introduces the surface photo reaction processes using synchrotron radiation, and its application. A synchrotron radiation process using soft X-rays contained in electron synchrotron radiated light as an excited light source has a possibility of high-resolution processing because of its short wave length. The radiated light can excite efficiently the electronic state of a substance, and can induce a variety of photochemical reactions. In addition, it can excite inner shell electrons efficiently. In the aspect of its application, it has been found that, if radiated light is irradiated on surfaces of solids under fluorine-based reaction gas or Cl2, the surfaces can be etched. This technology is utilized practically. With regard to radiated light excited CVD process, it may be said that anything that can be deposited by the ordinary plasma CVD process can be deposited. Its application to epitaxial crystal growth may be said a nano processing application in thickness direction, such as forming an ultra-lattice structure, the application being subjected to expectation. In micromachine fabricating technologies, a possibility is searched on application of a photo reaction process of the radiated light. 5 refs., 6 figs.

  3. Ground water contamination by electrical prospecting; Denki tansaho ni yoru chikasui osen chosa

    Energy Technology Data Exchange (ETDEWEB)

    Irie, S.; Fujii, Y.; Sakaguchi, S.; Ushijima, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1996-05-01

    A report is made about the result of vertical electric sounding conducted in the MK district, Fukuoka City, where Kyushu University is about to move. As for the method of electrical prospecting, in consideration of the need for probing a depth of 50m at the shallowest, vertical electrical sounding with a Schlumberger array of electrodes was employed. Measurements were made for 57 locations on the planar ground, the interval between electrodes gradually increased from 1 to 200m. In the 2D structure model analysis, a 2D inversion program was utilized in the ABIC minimization method. Also investigated were the relationship of electric prospecting and the geology, geological conditions, water level in the well, water quality, salt water, and pore rate from the previously-conducted investigative boring. As the result, it was estimated that the boundary between the first and second layers detected by electric prospecting reflected the level of underground water and that the boundary between the second and third layers reflected the portion where the N-value sharply increases. 4 refs., 8 figs.

  4. Archaeological prospecting by DEF method; Denkai zansaho ni yoru iseki tansa

    Energy Technology Data Exchange (ETDEWEB)

    Kishikawa, H.; Aono, T.; Tanaka, T.; Mizunaga, H. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1996-05-01

    A study is made of a newly-developed differential electric field (DEF) method, wherein potentials between potential electrodes equidistant from a current electrode is measured for directly detecting the secondary potential attributable to an anomalous-resistivity body. In this method, a current is fed into the ground from a point source C1, and four potential electrodes, two each on the X-axis and Y-axis, are provided equidistant from the point source C1 for the measurement of the potentials in the directions of X and Y. Numerical experiments and field experiments in a playground were conducted for this DEF method, and it was found that this method is effective in detecting an anomalous-resistivity bodies (ruins, etc.) situated in a homogeneous medium or in a horizontal multi-layer structure, is capable of displaying anomalous vectors enabling the estimation of the direction from the observation point of the anomalous-resistivity body, improves on work efficiency over the conventional mapping method, enables the estimation of the boundary of the anomalous-resistivity body on the basis of the peak of the anomalous electric field residue on the display, and that the obtained data can be easily processed by use of a personal computer on the site. 3 refs., 9 figs.

  5. Seismic traveltime tomography by use of gridpoints discritization; Koshitenho ni yoru danseiha tomography kaiseki

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-05-01

    Efforts were made to enhance analytical precision and stabilize the results in seismic traveltime tomography by use of a method wherein the velocity distribution is expressed as a continuous function interpolated by parameters respectively assigned to the gridpoints. In this method, the slowness data are regarded as the parameters respectively assigned to the gridpoints, and the slowness value at a given point is determined after interpolation by the gridpoints surrounding the said point. A method based on the variation principle was used for ray tracing. As the result, it was confirmed that this method determines the ray path and traveltime with high precision. A method of least squares using Lagrange`s multiplier was applied for inversion. Comparison was made between the use of cells and the use of gridpoints in the results of inversions performed for an inclined 4-layer structure model, when it was found that the values involving the boundaries between layers, inclinations of the layers, and velocities of seismic waves are ambiguous with the cells while those with the gridpoints are reconstructed roughly correctly. 5 refs., 7 figs., 1 tab.

  6. Characterization of earthquake fault by borehole experiments; Koseinai sokutei ni yoru jishin danso no kenshutsu

    Energy Technology Data Exchange (ETDEWEB)

    Ito, H.; Miyazaki, T.; Nishizawa, O.; Kuwahara, Y.; Kiguchi, T. [Geological Survey of Japan, Tsukuba (Japan)

    1996-05-01

    A borehole was excavated to penetrate the Nojima fault at the Hirabayashi area, to investigate the underground structures of the fault by observation of the cores and well logging. The borehole was excavated from 74.6m east of the fault surface. Soil is of granodiorite from the surface, and fault clay at a depth in a range from 624.1 to 625.1m. Observation of the cores, collected almost continuously, indicates that the fault fracture zone expands in a depth range from 557 to 713.05m. The well logging experiments are natural potential, resistivity, density, gamma ray, neutron, borehole diameter, microresistivity and temperature. They are also for DSI- and FMI-observation, after expansion of the borehole. The well logging results indicate that resistivity, density and elastic wave velocity decrease as distance from fault clay increases, which well corresponds to the soil conditions. The BHTV and FMI analyses clearly detect the fault clay demarcations, and show that elastic wave velocity and BHTV results differ at above and below the fault. 3 refs., 3 figs.

  7. Automatic ultrasonic testing for welding structures; Choonpa ni yoru yosetsu kozobutsu no kensa no jidoka

    Energy Technology Data Exchange (ETDEWEB)

    Yokono, Y. [Non-Destructive Inspection Co. Ltd., Osaka (Japan)

    1998-09-05

    Ultrasonic flow detection when compared with the radiation transmission detection, has advantages such as: it can be used even in thick plate, detection performance of surface defects like cracks or bad unification and so forth is good, possesses easier safety management and so forth. On the other hand, it is a manual testing and lacks memory, and has problem that the test results depend on the ability of technician and automation is preferred in many field. However, the manual scanning method of probe carried out by experienced technicians can not be replaced by automation because the signals obtained depend greatly on the surface condition of specimen, scanning speed of probe and welding pressure. At present, the memory capacity and computation ability of computer have been significantly developed and image processing and photo taking of the obtained results are carried out easily. In this report, practical image of ultrasonic flow detection of weld portion is discussed and some practical examples of automatic test devices for welding structures are introduced. 16 refs., 6 figs., 1 tab.

  8. Fully automitized welding with laser sensing; Laser sensor ni yoru yosetsu no kanzen jidoka

    Energy Technology Data Exchange (ETDEWEB)

    Uota, K.; Ashida, Y.; Bowaro, J.

    1998-05-01

    This paper introduces a laser vision system developed by Servo Robot Corporation, and examples of application of the system. This laser vision system consists of a laser sensor camera, a controller and software. The laser sensor camera measures contour, features, position and direction of an object by using an optical triangulation technology. The camera head has a special optical system in which the laser sensor is not subjected to influence of welding arc, where air cooling is performed on heat generated by the arc. The software package, USER-2000, performs two-dimensional visual indication on the contour and strength, indication of image processing results, setting of transmission velocity, and installation of VISUS, ADAP, TRAC-2000 and ROBO-2000. The laser vision system is combined with powerful application software, and applied to different welding methods, such as MIG welding, MAG welding, laser welding (using CO2 laser and YAG laser), submerged arc welding, and TIG welding. 12 figs., 1 tab.

  9. Purification of carbon nanotube by wet oxidation; Shisshiki sanka ni yoru carbon nanotube no seisei

    Energy Technology Data Exchange (ETDEWEB)

    Morishita, K.; Takarada, T. [Gunma University, Gunma (Japan)

    1997-07-10

    In order to efficiently recover carbon nanotubes, the purification method by wet oxidation with orthoperiodic acid and perchloric acid is investigated. The reactivity of the carbonaceous material toward the acids depends on the type of carbon. Carbon nanotubes are selectively recovered under the mild oxidation conditions. The degree of purification depends on the concentration of orthoperiodic acid. It is suggested that wet oxidation is an effective method for purification of carbon nanotubes. 17 refs., 6 figs.

  10. Spray visualization by laser sheet tomography; Laser sheet ni yoru funmu danmen no kashikaho

    Energy Technology Data Exchange (ETDEWEB)

    Oda, T.; Hiroyasu, H. [Hiroshima University, Hiroshima (Japan). Faculty of Engineering

    1996-07-21

    Laser sheet tomography was applied to the visualization of the cross section of a spray. In this method, fluorescent dye, eosine-Y(C20H6Br4Na2O), was used at a concentration of 10 g/l of the injectant, water, and the light source which illuminated the spray was a Nd: YAG laser (532 wavelength, 20ns pulse width) in laser sheet tomography. The thickness of the laser sheet which was scattered by the spray was measured to elucidate the effect of the concentration of fluorescent dye in the injected liquid. In the case of water without eosine-Y, multiscattered light-illuminated drops were observed outside of the laser sheet therefore the thickness of the laser sheet increased. However, in the case of water with eosine-Y, there were few drops which were illuminated by the multiscattered light, and only drops which existed within the laser sheet scattered green laser light and emitted the yellow fluorescent light of eosine-Y. 11 refs., 10 figs., 2 tabs.

  11. Countermeasures for increasing sequence continuous casting; Renchu kinosei taikabutsu zaishitsu, kozo kaizen ni yoru renrenchusu kojosaku

    Energy Technology Data Exchange (ETDEWEB)

    Tsuda, Masato; Shinagawa, Hiroaki; Kamada, Ryuji; Hiraga, Yutaka; Hara, Takayasu [Nippon Steel Corp., Tokyo (Japan)

    1999-06-01

    In the second continuous casting line of Kure Iron Works, Nisshin Steel Co., Ltd. improvement of the continuous casting counts per tundish was attempted for a target of max. 20. The results are as follows: (1) Non-SiO{sub 2} conversion of material for the long nozzle immersed part: About 20% improvement of durability compared with a conventional material to clear 0.059 mm/min of the targeted erosion speed when 20 CCC/TD is realized, (2) Durability improvement of SN plate: About 20% durability improvement was attained compared with a conventional material by the adoption of a non-SiO{sub 2} material, (3) Erosion resistance improvement of the immersed nozzle slug line part: Castable period was extended to 1 ch life improvement by increasing zirconia content, (4) Rise of stopper full open position: The rise of the full open position produced less variation of melt level than the conventional structure without increase of the SN opening, enabling plugging prevention between the stopper head and the upper nozzle which was an objective of this improvement, (5) Structure improvement of the upper nozzle: This improvement successfully prevented leaks from damage of the casting stop nozzle metal case and enabled casting under low gas flow even in TD nozzle plugging. These improvements gave a possibility to achieve max. 20 CCC/TD. (NEDO)

  12. Spinal reflex evoked by magnetic stimulation of spinal roots. Sekizuikon no jiki shigeki ni yoru sekizui hansha ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, S.; Hiwaki, O. (Kyushu University, Fukuoka (Japan))

    1991-09-20

    An analytic method of a spinal reflex is known as a diagnosis of function of a spinal nerve. This report shows a method to evoke a H-reflex, a kind of the spinal reflexes, by a stimulation using a pair of opposing pulsed magnetic fields. Two pulse currents were passed through a figured-eight coil respectively in the opposite directions to stimulate a nerve directly under the center of the coil where the induced eddy currents were mutually reinforcing in a body. Electromyographic (EMG) responses were recorded by signals from electrodes. The human nerve in the vicinity of the spine S1 was magnetically stimulated to induce two waves which differently reacted on various stimulating intensities. An experiment with the rabbit made sure that the two waves were the H-reflex and M-wave, respectively. It was conceivable that the H-reflex was most effectively induced, in the human spinal code s1, by the stimulation the spinal nerve extending out of intervertebral hole. The response patterns of the H-reflex and M-wave in the direction of the pulse stimulating current will be useful for diagnosis of nerve fiber diseases. 7 refs., 10 figs.

  13. Flat plate approximation in the three-dimensional slamming; Heiban kinji ni yoru sanjigen suimen shogeki keisanho ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Toyama, Y. [Mitsui Engineering and Shipbuilding Co. Ltd., Tokyo (Japan)

    1996-12-31

    A slamming load generated by interactive motions between a ship body and water face is an important load in ensuring safety of the ship. A flat plate approximation developed by Wagner is used as a two-dimensional slamming theory, but it has a drawback in handling edges of a flat plate. Therefore, an attempt was made to expand the two-dimensional Wagner`s theory to three dimensions. This paper first shows a method to calculate water face slamming of an arbitrary axisymmetric body by using circular plate approximation. The paper then proposes a method to calculate slamming pressure distribution and slamming force for the case when shape of the water contacting surface may be approximated by an elliptic shape. Expansion to the three dimensions made clear to some extent the characteristics of the three-dimensional slamming. In the case of two dimensions or a circular column for example, the water contacting area increases rapidly in the initial stage generating large slamming force. However, in the case of three dimensions, since the water contacting area expands longitudinally and laterally, the slamming force tends to increase gradually. Maximum slamming pressure was found proportional to square of moving velocity in a water contacting boundary in the case of three dimensions, and similar to stagnation pressure on a gliding plate. 12 refs., 17 figs., 1 tab.

  14. Research on environmental bioecosensing technology using ecological information; Seitaikei joho ni yoru kankyo bio eco sensing gijutsu ni kansuru chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    The bioecosensing technology was studied which detects and identifies feeble signals generated by biosystem communication in wide biological environment. The following were reported as current notable environmental biosensing technologies: a quick measurement method of environmental contaminants using immunological measurement method, analysis method of ecological state of microorganism using DNA probes, observation of ecosystem by bioluminescent system, measurement method of environmental changes and contaminants using higher animals and plants, and detection method of chemical contaminants using chemotaxis of microorganism. As a result, the new bioecosensing/monitoring technology in molecular level was suggested for identifying comprehensive environmental changes which could not be measured by previous physical and chemical methods, as changes in ecosystem corresponding to environmental changes. As the wide area remote sensing technology of environmental ecological information, sensing technology on the earth, aircraft and satellite was also discussed. 247 refs., 55 figs., 17 tabs.

  15. Effect of chelating agents and metal ions on nickel bioavailability and chlorophyll fluorescence response in wheat- An approach for attenuation of Ni stress

    Directory of Open Access Journals (Sweden)

    Nilima Patnaik

    2012-08-01

    Full Text Available The objectives of the study are to analyze the physiological changes, biochemical alterations and attenuation of nickel toxicity effects in wheat seedlings under combined applications of Ni ions, metal chelators (EDTA/Citric Acid and metal ions (Zn2+ /Mg2+. Wheat (Triticum aestivum L cv UP262 seedlings were grown hydroponically using different concentrations of Ni up to 7 days along with chelators and metal ions for study. The seedling growth was maximum with NiCl2–Zn2+ (100μM and minimum with NiCl2–EDTA (100μM treatments. Total chlorophyll content was maximum in the seedlings treated with NiCl2-Zn2+ (100μM and minimum in NiCl2-EDTA (100μM treatments. NiCl2–EDTA (100μM showed less Fo and Fm values and therefore, a trend in the decrease in OJIP transient indicates the maximum alteration of photochemical activity of PS-II in presence of NiCl2–EDTA (100μM treatment. Similar observation was found by NiCl2 –EDTA (200μM treatment where Fo and Fm values were noted to decline. High nickel content in roots of the seedlings was noted as compared to shoots.

  16. Synthesis and electrochemical characterization of LiNi0.5Mn1.5O4 by one-step precipitation method with ammonium carbonate as precipitating agent

    International Nuclear Information System (INIS)

    Highlights: → Ammonium carbonate is used as the precipitating agent of synthesizing LiNi0.5Mn1.5O4 for the first time. → All the metal ions precipitated in one time, no washing process is needed. → Effect of concentration and hydrothermal on the materials are concerned. → The obtained material shows regular quasi-spherical. → The synthesized materials behave excellent electrochemical properties. - Abstract: Spinel LiNi0.5Mn1.5O4 materials are synthesized by one-step precipitation method. Ammonium carbonate is used as the precipitating agent to obtain a more precise feed ratio without recourse to traditional washing. After annealing at high temperature, the spherical particles become angular and show high levels of crystallinity. The synthesized samples are evaluated using powder X-ray diffraction, scanning electron microscopy, and electrochemical testing. The samples synthesized with different metal ion concentrations yield different morphologies and rate performances. The sample synthesized with 0.2 mol L-1 gives the most uniform particle distribution and the best electrochemical performance. The specific discharge capacity values of the sample at 10 and 15 C are as high as 109.5 and 88.7 mAh g-1, respectively. After the high-rate cycling, its discharge capacity at 0.2 C can be reverted to 97.67% of its initial capacity.

  17. 铸铁化学镀Ni-P合金稳定剂的研究%Study on Electroless Plating Ni-P Alloy Surface Stabilizing Agent of Cast Iron

    Institute of Scientific and Technical Information of China (English)

    雷阿利; 冯拉俊; 马小菊; 连炜

    2006-01-01

    针对化学镀Ni-P合金过程中稳定性差,镍离子消耗量大的实际,以镀速、镀液稳定性、镀层孔隙率和耐蚀性为评价指标,研究了Na2S2O3、Pb(AC)2、稳定剂A及稳定剂B等4种稳定剂在乳酸为络合剂的Ni-P化学镀液中的稳定效果.结果表明:复合稳定剂比单一稳定剂镀速高、稳定性好、孔隙率低.其中以Pb(AC)2与稳定剂A组合时镀液和镀层性能最好,稳定性达到35 000s,镀速为30.1μm/h,孔隙率为0.78个/cm2,耐盐雾腐蚀为856 h.

  18. Study on the active noise control method and the effect of noise reduction due to the multi-connected branch dusts. Gyakuiso no fukaon ni yoru soon seigyoho no kento to tarengata bunkikan ni yoru soon keigen koka

    Energy Technology Data Exchange (ETDEWEB)

    Nakao, Kiyoatsu.

    1989-04-01

    This paper reports the results of experimental studies on the utility of the active noise control method, and the effects of the multi-connected branch pipes silencer, concerning the reduction of noise. In the experiments of active noise control by using ducts, when the canceling sound was produced by the speaker set at the end of the short-length pipe corresponding to the one forth wave-length, the sound pressure of canceling noise was less one sixth as compared with setting the speaker at the wall of pipe. The noise reduction quantity to the random noise by the active noise control method was about as much as 15db. This method is not adaptable for noise with wide ranges of frequency. A branch pipe silencers, when it was used as multi-connected branch pipe, could extend the bounds of noise frequency which was able to be reduced and could increase the noise reduction quality. This silencer can deal with the fluctuation of frequency od noise and has higher practicability. 10 refs., 21 figs.

  19. Drag reduction of high altitude airships by active boundary layer control. Effect of a cusp on the reduction; Nodo kyokaiso seigyo ni yoru koso hikosen no teiko teigen. Cusp ni yoru teigen koka

    Energy Technology Data Exchange (ETDEWEB)

    Yamamura, N. [Nissan Motor Co. Ltd., Tokyo (Japan); Matsuuchi, K.; Yamazaki, S.; Sasaki, A. [University of Tsukuba, Tsukuba (Japan); Onda, M. [Mechanical Engineering Lab., Tokyo (Japan)

    1998-02-25

    The aerodynamic character of station-keeping airships at high Reynolds numbers is examined. The boundary layer developing on the surface is sucked by an axial flow fan through a slot located at the rear part of the airship and the sucked gas is blown out as a jet. To know the effect of the cusp two models with and without a cusp attached to the inlet of the suction slot were used. The flow field near the inlet, in particular the pressure on the surface, was measured as the suction discharge was varied. We obtained the form drag by integrating the pressure distribution in a wide range of Reynolds number and of suction discharge. Taking into account the jet thrust and the calculated friction drag, we finally determined the total drag and evaluated the role of the cusp. It was found that the cusp plays an efficient role in reducing the drag. 7 refs., 12 figs.

  20. Wavefield analysis in inhomogeneous media by wavelet transform; Wavelet henkan ni yoru fukinshitsu baitai no hadoba kaiseki

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-10-01

    Data processing techniques have been investigated for clarifying structures and physical properties of geothermal reservoirs in the deep underground by seismic exploration using multiple wells. They include the initial motion time-distance tomography, amplitude tomography, diffracted wave tomography, and structure imaging using reflected wave or scattered wave. When applying these data processing methods to observed records, weak and minor signals essentially required are canceled due to averaging the analytical fields. In this study, influence of inhomogeneous media on the wavefield was evaluated. Data were analyzed considering frequency by using wavelet transform by which time-frequency can be easily analyzed. From the time-frequency analysis using wavelet transform, it was illustrated that high frequency scattered waves, generated by scatterer like cracks or by irregularity on the reflection surface, arrive behind direct P-wave and direct S-wave. 5 refs., 8 figs.

  1. Monitoring of IOR/EOR operations by electrical prospecting; Denki tansaho ni yoru IOR/EOR monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Ushijima, K.; Mizunaga, H.; Ikeda, H.; Masuda, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1996-10-01

    Fluid flow tomography (FFT) was developed to monitor enhanced oil recovery IOR/EOR operations. This method uses a casing pipe as linear current source by connecting a current electrode with a well inlet, and the other electrode is grounded at a point far different from the well. Potentials are rapidly measured at the same time by multi-channel receiving electrodes installed on the ground to obtain time series data composed of charged potential and superimposed spontaneous potential. After separation of both potentials, the charged potential data are processed by the conventional mise-a-la-masse method to extract local anomaly, determine the residual distribution and relative change distribution of time-sliced apparent resistivity, and obtain the 3-D profile of fluid. The spontaneous potential is also processed to obtain the deflection distribution of time-sliced potential at a specific time. Quantitative 3-D interpretation is conducted focusing attention on the generation mechanism of spontaneous potential. Behavior of underground permeated flow is determined as time series animation images to image fluid direction. This method was effective in real fields. 8 refs., 4 figs.

  2. Monitoring of EOR operations by electrical prospecting. 2; Denki tansaho ni yoru sekiyu kyosei kaishuho no monitoring. 2

    Energy Technology Data Exchange (ETDEWEB)

    Ushijima, K.; Mizunaga, H.; Tanaka, T.; Masuda, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering; Tamagawa, T. [Japex Jeoscience Institute, Tokyo (Japan)

    1996-10-01

    Fluid flow tomography (FFT) was applied to monitor the behavior of underground fluid in steam enhanced oil recovery (EOR) for oil sand reservoirs. FFT uses electrode arrangement of a mise-a-la-masse method, and continuously measures time variation in charged and spontaneous potential at various surface points to obtain realtime the images of underground seepage flow. It continuously measures ground surface potentials of 120 channels at intervals of 2s by applying alternative DC between a casing pipe and distant current electrode. It separates charged and spontaneous potential components, and converts them into time series data. It estimates the time and spacial distributions of seepage flow from time variation in spontaneous potential. It determines the change rate distribution of time-sliced apparent resistivity from charged potential to estimate the scale and area of seepage flow. As the experimental result, positive and negative electrodes in the change rate distribution were observed, and the direction connecting each electrode agreed with that of resistivity anomaly. FFT could observe realtime time variation in apparent resistivity due to steam injection. 9 refs., 7 figs.

  3. Cooling effects of artificial water facilities by using a moving type turbulence promoter; Kudo ranryu sokushintai ni yoru suireikyaku jikkenho

    Energy Technology Data Exchange (ETDEWEB)

    Miyake, K.; Nomura, T.; Nishimura, N.; Iyota, H. [Osaka City University, Osaka (Japan)

    1996-10-27

    Artificial water facilities present an effective means to alleviate trying micrometeorological phenomena such as warming of the urban space. For the reproduction of such an alleviating means by use of a model in a wind tunnel, a moving disturbance promoter (moving spire) was developed so as to render disturbances in a wind tunnel current similar in scale to ones in the real atmosphere, and an air current cooling experiment was conducted using a model fountain. The effort was intended for a small-size wind tunnel without a space large enough for disturbance promoter installation, and a moving type spire was developed for promoting disturbance effectively. The new spire is driven by a driving unit consisting of a motor and cam and can change its angle relative to the main current by 140{degree} at a rotation cycle of 1.7Hz., and this changes the flow direction of the main current periodically. As compared with the generally used combination of a roughness block and stationery spire, this new spire produced a disturbance intensity two times greater and a disturbance scale three times larger. When the disturbance intensity and scale were increased, the cooling characteristics of the air current changed in response to changes in the state of flow. 8 refs., 7 figs., 1 tab.

  4. 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.

  5. 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.

  6. Upgrading of brown coal by slurry-dewatering; Kattan no yuchu dassui ni yoru clean kotai nenryo no seizo

    Energy Technology Data Exchange (ETDEWEB)

    Okuma, O.; Shimizu, T.; Inoue, T.; Shigehisa, T.; Deguchi, T.; Katsushima, S. [Kobe Steel, Ltd., Kobe (Japan)

    1996-10-28

    This paper describes an outline of solid fuel production process from brown coal and the investigation results of its elemental techniques. Dried coal is produced by this process which consists of a dewatering of crushed brown coal in oil-based solvent, a solid and liquid separation of slurry, and a remained oil recovery by heating. This process is characterized by the higher thermal efficiency compared with usual drying and the restraint of spontaneous combustion of product coal. It was revealed that solid fuel with low moisture, low ash, low sulfur, and suppressed spontaneous combustion property can be produced from Australian brown coal through this process. From the comparison between kerosene and fuel oil A, it was confirmed that the oil content during dewatering was smaller and the oil recovery by heating was easier by using a solvent with lower boiling point. It was also confirmed that the spontaneous combustion property can be suppressed using small amount of asphalt by solving asphalt in the solvent and adsorbing asphalt on the surface of brown coal. From these results, low rank coals including brown coal, which are difficult to use, are expected to be used as clean coal with low ash and low sulfur through this process. 2 refs., 7 figs., 2 tabs.

  7. Investigation of iron current measurement to detect combustion quality; Ion denryu ni yoru nensho jotai kenshutsu no kento

    Energy Technology Data Exchange (ETDEWEB)

    Nakata, K.; Mogi, K. [Toyota Motor Corp., Aichi (Japan)

    1997-10-01

    The possibility and problems were investigated in detecting the combustion quality by means of ion current measured at the spark plug. The ion current has two peaks during one combustion stroke; first peak is generated by flame around the spark plug just after ignition and second one appears with the rise in temperature of burned gases. As the result of investigations, it was confirmed that the first ion peak might be useful to forecast the combustion quality, but it would be hard to practice owing to the spark duration. And the second peak offered the information of combustion chamber pressure. 4 refs., 12 figs., 1 tab.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-10-01

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

  9. Adaptation of topology optimization on truck-structure; Kinshitsukaho ni yoru iso saitekika shuho no truck kozo eno tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Tachibana, H.; Kojima, A.; Chiba, S. [Mitsubishi Motors Corp., Tokyo (Japan)

    1997-10-01

    An optimization using the homogenization method has been applied to a truck-structure on the concept design stage. A truck-structure is grouped into 3 classes (thin plate structure , thick plate structure and solid structure), then example, effectiveness and method for the application for the purpose of weight reduction , high rigidity and high eigen-frequency are introduced. 3 refs., 24 figs., 1 tab.

  10. Modeling of power train by applying the virtual prototype concept; Kaso genkei ni yoru power train no model ka

    Energy Technology Data Exchange (ETDEWEB)

    Hiramatsu, S.; Harada, Y.; Arakawa, H.; Komori, S. [Mazda Motor Corp., Hiroshima (Japan); Sumida, S. [U-Shin Corp., Tokyo (Japan)

    1997-10-01

    This paper describes the simulation of power train that includes the model developed by applying the virtual prototype concept. By this concept, subsystem models which consist of functional model and mechanism models are integrated into a total system model. This peculiarity in architecture of model, which is called the hierarchical structure, enables us to model a system of large scale with many units, systems and parts easily. Two kinds of computer simulations are performed. One is engine revolution fluctuation by accessory load input, and the other is changing gears by automatic transmission. They are verified to have sufficient accuracy. 2 refs., 12 figs.

  11. Resistivity structures imaging using time-domain electromagnetic data; TDEM ho ni yoru chika hiteiko kozo no imaging

    Energy Technology Data Exchange (ETDEWEB)

    Noguchi, K. [Waseda University, Tokyo (Japan). School of Science and Engineering; Endo, M. [Waseda University, Tokyo (Japan)

    1996-10-01

    The kernel function for transient vertical magnetic dipole was defined for semi-infinite uniform medium, and the 1-D imaging algorithm by TDEM (time-domain electromagnetic) method was developed for underground resistivity structure. Electromagnetic migration method directly images sectional resistivity profiles from the data observed by frequency-domain MT method, and determines underground resistivity profiles by integral equation of MT field using the concept of return travel time in reflection seismic exploration. The method reported in this paper is also one of the EM migration methods. The imaging algorithm of 2-D resistivity structure was developed by correcting 1-D imaging in consideration of the effect of 2-D anomaly on 1-D imaging (the resistivity of anomaly can be obtained from the resistivity contrast between anomaly and medium). The conventional methods require enormous forward computation, while this method can obtain underground resistivity structure in extremely short computation time, resulting in superior practicability. 12 refs., 7 figs.

  12. Free convective heat loss from cavity-type solar furnace; Solar receiver kara no shizen tairyu ni yoru netsusonshitsu

    Energy Technology Data Exchange (ETDEWEB)

    Fujii, I.; Ito, N. [Meiji University, Tokyo (Japan)

    1996-10-27

    Free convective heat loss from solar heat receivers was studied, using three laboratory model receivers (different in depth L and aperture diameter d) heated by electric heaters. Most of the heat produced by heaters was transmitted to the air inside. The cylindrical vessel walls were fully insulated against heat. Heat loss being supposed to result mainly from transfer by free convection, the experiment results were edited by use of Nusselt number Nu and Rayley number Ra. Relations between Nu(D/d){sup m1} and Ra(L/D){sup m2} were plotted in a chart. Here, D is the receiver inner diameter, and m1 and m2 are constants that can be determined by computation. Tests points were provided approximately lineally, irrespective of D, L, or receiver inclination. Air currents were found to produce one or more swirls inside, thanks to the current visualization technique, when the receiver inclination was not sharper than 120{degree} (except 0{degree}). The number of swirls increased as the inner wall temperature rose. This kind of behavior of air currents directly affects the degree of heat loss. 9 refs., 4 figs.

  13. Estimation of the charge quantity from solar cell to battery; Taiyo denchi ni yoru chikudenchi eno juden yosoku

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-10-27

    In performing an experiment of running a small electric vehicle by installing solar cells in it and by charging the storage battery at a specific voltage, an estimation was made on the charge quantity to the battery for each solar altitude and inclination of a module at different hours. The solar altitude was determined at Daiichi University, College of Technology, according to the month and the time of day from a formula using day-declination and time equation of a chronological table of science. The quantity of global solar radiation was determined by resolving the solar radiation into its direct and diffuse components on the basis of the extra-terrestrial solar radiation quantity with the change in radius vector taken into consideration; and then, the global solar radiation on the inclined face was obtained from the angle of inclination and incidence. On the roof of a Daiichi University building, solar cell modules were installed facing north and south at 0{degree}, 30{degree}, 45{degree}, 60{degree} and 90{degree} each, so that a short-circuit current was measured for each differently inclined angle. As a result of the experiment, shown in an regression formula is a relation between the temperature conversion value of the maximum output of the solar cell at the standard temperature of 25{degree}C and the quantity of solar radiation on the inclined surface. Consequently, it enabled the prediction of a charging quantity, in the case of running a small vehicle with solar cells installed, from the quantity of solar radiation on the inclined surface in the clear weather. 2 refs., 4 figs., 2 tabs.

  14. Design and model experiments on thruster assisted mooring system; Futaishiki kaiyo kozobutsu no thruster ni yoru choshuki doyo seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, M.; Koterayama, W. [Kyushu Univ., Fukuoka (Japan). Research Inst. for Applied Mechanics; Kajiwara, H. [Kyushu Institute of Technology, Kitakyushu (Japan). Faculty of Computer Science and System Engineering; Hyakudome, T. [Kyushu University, Fukuoka (Japan)

    1996-12-31

    Described herein are dynamics and model experiments of the system in which positioning of a floating marine structure by mooring is combined with thruster-controlled positioning. Coefficients of dynamic forces acting on a floating structure model are determined experimentally and by the three-dimensional singularity distribution method, and the controller is designed by the PID, LQI and H{infinity} control theories. A model having a scale ratio of 1/100 was used for the experiments, where 2 thrusters were arranged in a diagonal line, one on the X-axis. It is found that the LQI and H{infinity} controllers of the thruster can control long-cycle rolling of the floating structure. They allow thruster control which is insensitive to wave cycle motion, and efficiently reduce positioning energy. The H{infinity} control regulates frequency characteristics of a closed loop more finely than the LQI control, and exhibits better controllability. 25 refs., 25 figs.

  15. Structural monitoring for fatigue crack detection and prediction; Kozo monitoring ni yoru hiro sonsho no kanchi to yochi

    Energy Technology Data Exchange (ETDEWEB)

    Fujimoto, Y.; Shintaku, E. [Hiroshima University, Hiroshima (Japan). Faculty of Engineering; Kim, S.; Takamoto, T. [Hiroshima University, Hiroshima (Japan)

    1995-12-31

    The applicability of structural monitoring is discussed for crack-type damages of metal structures. Two types of monitoring methods are examined; detection of existing fatigue crack and prediction of fatigue damage. As the detection of existing crack, the concept of health monitoring is employed. Five types of line sensors, i.e. conductive film-sensor, conductive-paint sensor, plastic optical-fiber sensor, glass optical-fiber sensor and carbon-fiber sensor are made on an experimental basis. The sensors are bonded on the surface of a welded joint model and two types of specimens by adhesives or painting, and fatigue tests are carried out. In these tests, the appearance that the fatigue cracks break the sensors is closely observed. Further, electric resistance of sensors or light strength output of laser beam are measured to perceive the instant of failure during the fatigue test. As the prediction of fatigue damage, method to attach sacrificial specimen on member is examined. A sacrificial specimen is designed such that magnified member stress is transmitted to the specimen and thus results in earlier crack initiation than the member. The sacrificial specimen is a center notched thin plate with 60 mm-length, 10 mm-width and 0.25 mm-thick. The middle part in length of the specimen is coated by Teflon film and the whole of the specimen is sandwiched in between two thin epoxy resin plates. The sacrificial specimen is bonded on a smooth specimen by epoxy resin, and fatigue tests are carried out. From the test result, it is made clear that the sacrificial specimen developed in this study can fulfill the function to predict the fatigue life of structural members. 13 refs., 19 figs., 2 tabs.

  16. Fracture mapping in rock slope using geophysical instruments; Butsuri tansa ni yoru ganban shamennai no kiretsu bunpu hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Kurahashi, T.; Inazaki, T. [Public Works Research Institute, Tsukuba (Japan); Watanabe, S. [Geological Survey of Japan, Tsukuba (Japan)

    1997-05-27

    An attempt was made to visualize distribution of cracks in a rock slope by applying geophysical survey onto a rock slope. Geophysical logging and seismic survey using the reflection method were used as the methods for the geophysical survey. The rock slope subjected to the survey is located in a gorge along the Yoshino river in Yamashiro Town, Tokushima Prefecture. The slope has a width of 25 m and a height of 30 m. Its overhang in a nose form may has a possibility of causing collapse due to sliding. Cracks developed by horizontal schistosity were detected by performing geophysical logging on VSP, calipers, natural gamma-ray spectra, temperature and borehole in a borehole drilled vertically from the top of the slope. The seismic survey using the reflection method detected the cracks by emphasizing joints in the perpendicular direction. A possibility was shown to visualize the crack distribution with high resolution by using the above geophysical survey on the rock slope. In order to detect the crack distribution with still higher resolution, development into a three-dimensional exploration in the future is desired, not to speak of improvement in signal receivers, and discussions on geometry. 1 ref., 6 figs.

  17. Detection of multiple AE signal by triaxial hodogram analysis; Sanjiku hodogram ho ni yoru taju acoustic emission no kenshutsu

    Energy Technology Data Exchange (ETDEWEB)

    Nagano, K.; Yamashita, T. [Muroran Institute of Technology, Hokkaido (Japan)

    1997-05-27

    In order to evaluate dynamic behavior of underground cracks, analysis and detection were attempted on multiple acoustic emission (AE) events. The multiple AE is a phenomenon in which multiple AE signals generated by underground cracks developed in an extremely short time interval are superimposed, and observed as one AE event. The multiple AE signal consists of two AE signals, whereas the second P-wave is supposed to have been inputted before the first S-wave is inputted. The first P-wave is inputted first, where linear three-dimensional particle movements are observed, but the movements are made random due to scattering and sensor characteristics. When the second P-wave is inputted, the linear particle movements are observed again, but are superimposed with the existing input signals and become multiple AE, which creates poor S/N ratio. The multiple AE detection determines it a multiple AE event when three conditions are met, i. e. a condition of equivalent time interval of a maximum value in a scalogram analysis, a condition of P-wave vibrating direction, and a condition of the linear particle movement. Seventy AE signals observed in the Kakkonda geothermal field were analyzed and AE signals that satisfy the multiple AE were detected. However, further development is required on an analysis method with high resolution for the time. 4 refs., 4 figs.

  18. Application of vector CSAMT for the imaging of an active fault; CSAMT ho ni yoru danso no imaging

    Energy Technology Data Exchange (ETDEWEB)

    Kobayashi, T.; Fukuoka, K. [Oyo Corp., Tokyo (Japan)

    1997-05-27

    With an objective to identify three-dimensionally resistivity in deep fault in the Mizunawa fault in Fukuoka Prefecture, a measurement was carried out by using the CSAMT method. The measurement was conducted by arranging seven traverse lines, each line having observation points installed at intervals of about 500 m. Among the 68 observation points in total, 33 points performed the vector measurement, and the remaining points the scaler measurement. For observation points having performed the vector measurement, polarized wave eclipses were depicted in the electric field to discuss which direction the current will prevail in. For analyses, a one-dimensional analysis was performed by using an inversion with smoothing restriction, and a two-dimensional analysis was conducted by using the finite element method based on the result of the former analysis. The vector measurement revealed that the structure in the vicinity of a fault was estimated to have become complex, and the two-dimensional analysis discovered that the Mizunawa fault is located on a relatively clear resistivity boundary. In addition, it was made clear that the high resistivity band may even be divided into two regions of about 200 ohm-m and about 1000 ohm-m. 2 refs., 7 figs.

  19. Detection of buried pipes by polarimetric borehole radar; Polarimetric borehole radar ni yoru maisetsukan no kenshutsu jikken

    Energy Technology Data Exchange (ETDEWEB)

    Sato, M.; Niitsuma, H. [Tohoku University, Sendai (Japan); Nakauchi, T. [Osaka Gas Co. Ltd., Osaka (Japan)

    1997-05-27

    If the borehole radar is utilized for detection of buried pipes, the underground radar measurement becomes possible even in the situation where the mesurement on the earth surface is difficult, for example, such a place as under the road where there is much traffic. However, since buried pipes are horizontally installed and the existing borehole radar can send/receive only vertical polarization, the measurement conducted comes to be poor in efficiency from a viewpoint of the polarization utilization. Therefore, by introducing the polarimetric borehole radar to the detection of buried pipes, a basic experiment was conducted for the effective detection of horizontal buried pipes. Proposing the use of a slot antenna which can send/receive horizontal polarization in borehole in addition to a dipole antenna which sends/receives vertical polarization, developed was a step frequency type continuous wave radar of a network analyzer basis. As a result of the experiment, it was confirmed that reflection from buried pipes is largely dependent on polarization. Especially, it was found that in the slot dipole cross polarization mesurement, reflection from buried pipes can be emphasized. 4 refs., 5 figs.

  20. Fundamental study of noise reduction by active noise control. Active soon seigyo ni yoru soon taisaku no kiso kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Sugiyama, T.; Naganawa, A. (Chubu Electric Power Co. Inc., Nagoya (Japan))

    1994-05-01

    Fundamental experiments were conducted on active noise control as sound insulation fence. This control method generates a sound source with the same amplitude and opposite phase as noise, and reduces noise through the interference of acoustic wave from the source. However, this method has too many problems with the three-dimensional sound field to be actually exploited in this environment. The following experiments were conducted to apply the active noise control to the sound insulation fence: one method of installing a geometric path along the inner side of the sound insulation fence used the acoustic delay process generated on the source side to attenuate the sound pressure level on top of the fence through interference of routing difference sound. The other method used an additional sound source attached to the bottom of the geometric path above to obtain a higher attenuation than using the simple sound insulation fence. At the second step, the active control duct model was used for the test. Then, the three-dimensional model test was conducted for active control of the sound insulation fence. The results of these fundamental experiments have indicated that each method can reduce the relative sound pressure level and the active noise control system using the acoustic phase difference can effectively reduce noise with dominant components in a low frequency band. There are still several problems with the three-dimensional mock-up model. 4 refs., 18 figs., 2 tabs.

  1. Local sensing of biological substances by scanning electrochemical microscopy; Sosagata denki kagaku kenbikyo ni yoru seitai busshitsu no kyokusho sensing

    Energy Technology Data Exchange (ETDEWEB)

    Saito, T. [Tokyo College of Pharmacy, Tokyo (Japan)

    1999-01-01

    This paper describes a method for local detection of biological substances by using a scanning electrochemical microscope (SECM). The electrochemical detection method is a multipurpose analysis method that can quantify substances in aqueous solution on a real time basis. A micro electrode has made a debut recently and become applied to local zones in biological structures and cells. Capturing surface structures and compositions of substances have become possible with the SECM using the micro electrode as a probe, as does the probe of a scanning tunnel electron microscope (STM). While the STM can recognize microfine structures of smaller than 1 nm, the SECM does it only on {mu} level, but can measure a variety of living organisms as the recognition is possible in aqueous solutions. Antigens are reacted with antibodies on spots of several ten {mu} m oriented on a glass substrate, where oxidizing and reducing reactions by peroxidaze modified on the antibodies are read on the SECM, making quantification of the antibodies possible. Chemical treatment of enzymes and antibodies can also be performed onto the glass substrate by using this micro electrode. Expectation is placed on providing living organism information in multi items and multi dimensions. (NEDO)

  2. Development of a vibration control system using a roller pendulum. Korogari furiko ni yoru seishin system no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Otsuka, S.; Oka, Y.; Kawai, N.; Hayakawa, K.; Yasui, K.; Sugimoto, H. (Okumura Corp., Osaka (Japan))

    1992-11-10

    In order to mitigate the shaking of the steel structure of multi-story building or tower-like building in case of earthquake or gale and improve the residentiality, a passive type vibration control system using a roller pendulum was developed. The real scale experiment was conducted using an experimental tower of 31 meter high installed in the laboratories. A series of experiments concerning the vibration initiation and the response observation proved a good vibration control performance of the passive type vibration control system. At present, we are developing an active type vibration control system based on the modern control theory, as it can be expected to operate more effectively. Making the program based on the feed-back control, we carried out various simulation analysis considering the experimental tower. We succeeded in obtaining the data which were valuable for the decision of development target and the specification settlement. Accumulating the experimental data of the passive type vibration control system using the experimental power, we will continue the study to establish the algorithm for completing the active type vibration control system. 10 figs., 3 tabs.

  3. Variation of consolidated shape of sand during chemical grouting; Yakueki chunyu joken ni yoru suna no koketsu keijo no henka

    Energy Technology Data Exchange (ETDEWEB)

    Choi, H.; Kajima, M.; Yanagisawa, E. [Tohoku University, Sendai (Japan)

    1997-12-21

    In order to determine ideal grouting conditions, one must estimate how different variables such as grouting condition and ground depth affect the shape and volume of chemical grouts. The results presented in this study were drawn from 300 laboratory tests, which included repetitions to ensure accuracy. Both the height and diameter of the test specimens were held constant at 30cm. When both the overburden pressure and injection rate is high , it is possible to obtain a spherical shape similar to permeation grouts. However the overburden pressure is high (irrespective of gel time), the volume of the solidified shapes is decreased about 15% -25%. 21 refs., 17 figs., 2 tabs.

  4. GPS landy system (GPS land dynamic management system). Jinko eisei GPS ni yoru doko sogo kanri system

    Energy Technology Data Exchange (ETDEWEB)

    Kanzaki, T.; Nishizawa, S. (Taisei Corp., Tokyo (Japan))

    1991-09-15

    A GPS LANDY system was developed, which is characterized in overall systematization of large scale land constructions, intended to improve its efficiency, by means of linking the shape measurement utilizing satellites with various types of land management. The GPS is an observation system using 18 satellites, three each on six orbits, orbifing in an altitude of 20,000 km. Because of the conventional GPS requiring three hours, and in addition, having as poor accuracy as several ten meters, a GPS dynamic position measuring method was developed, which is applied with such an improvement as installing receiving antennas at the measuring points. As a result, recording the three-dimensional coordinates has become possible instantaneously and continuously; the system can be operated by a single operator; simultaneous multi-point measurements have become possible if the number of receivers is increased; quick and wide-area three-dimensional topographic measurement has become possible; and the accuracy was improved to 1 cm. Utilization of these measurement data to various construction management systems led to a completion of the overall land management system. 5 figs.

  5. Glass marking with diode-pumped Nd:YLF laser; Handotai reiki Nd:YLF laser ni yoru glass marking

    Energy Technology Data Exchange (ETDEWEB)

    Sakai, F.; Hayashi, K. [Sumitomo Heavy Industries, Ltd., Tokyo (Japan)

    1996-08-20

    The compact marking system based on a beam scanning system in which the fourth harmonic (FHG: 262 nm in wavelength) of a diode-pumped Nd:YLF (Nd:LiYf4) laser is used for the source of ultraviolet light is described. The result of application to the glass marking that caused a problem due to the generation of cracks is also explained. The machining characteristics significantly vary depending on the type of glass. During actual marking, sample processing must be beforehand carried out to optimize the processing conditions after confirming that there is no problem in practical use. For marking on the glass used for liquid-crystal board, it is valid to improve the density of a dot and increase the number of shots per dot for obtaining high visibility. However, cracks may occur in the clearance of each dot because of the thermal effect. Therefore, the processing conditions must be optimized according to the glass type and crack generation state. The generation of cracks can be suppressed by setting the processing conditions to the optimum level. As a result, satisfactory marking is obtained. 8 refs., 6 figs.

  6. Method for analyzing electromagnetic-force-induced vibration and noise analysis; Denjiryoku reiki ni yoru dendoki no shindo hoshaon kaisekiho

    Energy Technology Data Exchange (ETDEWEB)

    Shiohata, K.; Nemoto, K.; Nagawa, Y.; Sakamoto, S.; Kobayashi, T.; Ito, M.; Koharagi, H. [Hitachi, Ltd, Tokyo (Japan)

    1998-11-01

    In this analysis method, electromagnetic force calculated by 2-dimensional analysis is transformed into external force for 3-dimensional structural-vibration analysis. And a modeling procedure for a vibrating structure is developed. Further, a space-modal-resonance criteria which relates electromagnetic force to structural-vibration or noise is introduced. In the structural-vibration analysis, the finite element method is used; and in the noise analysis, the boundary element method is used. Finally, vibration and noise of an induction motor are calculated using this criteria. Consequently, high-accuracy modeling is achieved and noise the calculated by the simulation almost coincides with that obtained by experiments. And it is clarified that the-space-modal resonance criteria is effective in numerical simulation. 11 refs., 9 figs., 3 tabs.

  7. Evaluation of permeability of Nojima fault by hydrophone VSP; Hydrophone VSP ni yoru Nojima danso no tosuisei hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Kiguchi, T.; Ito, H.; Kuwahara, Y.; Miyazaki, T. [Geological Survey of Japan, Tsukuba (Japan)

    1996-05-01

    The multi-offset hydrophone VSP experiments were carried out using a 750m deep borehole as the oscillation receiver, which penetrates the Nojima fault, to detect water-permeable cracks and evaluate their characteristics. Soil around the borehole is of granodiorite, and fault clay is found at a depth in a range from 623 to 624m. A total of 4 dynamite tunnels were provided around the borehole as the focus. The VSP results show that the tube waves are generated at 22 depths, including the depth at which fault clay is found. However, these waves are generated at only 6 depths in an approximately 150m long fracture zone, suggesting that the cracks in the zone are not necessarily permeable. It is also found that crack angle determined by the analysis of tube waves almost coincides with that of fault clay determined by the core, BHTV and FMI, and that permeability is of the order of 100md at a depth of fault clay or shallower. 3 refs., 2 figs., 2 tabs.

  8. Velocity structure of Nojima-fault by VSP method; VSP ho ni yoru Nojima danso no sokudo kozo

    Energy Technology Data Exchange (ETDEWEB)

    Kuwahara, Y.; Ito, H.; Kiguchi, T.; Miyazaki, T. [Geological Survey of Japan, Tsukuba (Japan)

    1996-05-01

    In order to investigate in detail structures of the fractured fault band, the VSP tests were conducted using a 750m deep borehole penetrating the Nojima fault in Awaji Island. The borehole penetrates the fault clay band at a depth of 624m in the Hirabayashi area. The offset VSP survey, conducted by the aid of hydrophone through the naked borehole, detects many characteristic phenomena resulting from the fault fracture. Largely fractured lithofacies are found by the core observation at a depth in a range from 557 to 673m. P-waves propagate at 4.6 and 5.1km/s above and below the fractured band, respectively. The fractured band is subdivided into 2 sections, both being of low speed of 4.5 and 3.1km/s. The X1 and X2 phases resulting from the fault fracture are also observed, above and below the fractured band. The causes for these wave phases are now under investigation. 4 figs.

  9. Three-dimensional TDEM modeling using integral equation method. 2; Sekibun hoteishikiho ni yoru TDEM no sanjigen modeling. 2

    Energy Technology Data Exchange (ETDEWEB)

    Noguchi, K.; Endo, M. [Waseda University, Tokyo (Japan). School of Science and Engineering

    1996-05-01

    A study was made about integral equation-assisted numerical calculation in a time domain electromagnetic (TDEM) 3D modeling. The total number of cells should be minimized now that the time required for calculation depends a great deal upon the total number of cells. On the assumption of a thin plate-like layer of anomaly in presence, with its center positioned just below the receiving point and with its entirety buried in a homogeneous 100 Ohm m medium, the correlation between the distance and the maximum cell length in the horizontal direction and the method of dividing were examined. As the result, it was found that a dividing method respecting the exponential function shortens the calculation time and that, for obtaining a true response and for minimizing the calculation time, the length of the horizontal side of the cell nearest to the transmission source needs be set to be not more than 1/2 of the distance. It was also found that the length of the side in the direction of depth of the topmost cell needs be set to be not more than approximately 1/3 of the depth of the upper surface of the plate-shaped anomaly. 2 refs., 10 figs., 2 tabs

  10. Suppression of 3D coherent noise by areal geophone array; Menteki jushinki array ni yoru sanjigen coherent noise no yokusei

    Energy Technology Data Exchange (ETDEWEB)

    Murayama, R.; Nakagami, K.; Tanaka, H. [Japan National Oil Corp., Tokyo (Japan). Technology Research Center

    1996-05-01

    For improving the quality of data collected by reflection seismic exploration, a lattice was deployed at one point of a traverse line, and the data therefrom were used to study the 3D coherent noise suppression effect of the areal array. The test was conducted at a Japan National Oil Corporation test field in Kashiwazaki City, Niigata Prefecture. The deployed lattice had 144 vibration receiving points arrayed at intervals of 8m composing an areal array, and 187 vibration generating points arrayed at intervals of 20m extending over 6.5km. Data was collected at the vibration receiving points in the lattice, each point acting independently from the others, and processed for the composition of a large areal array, with the said data from plural vibration receiving points added up therein. As the result of analysis of the records covering the data collected at the receiving points in the lattice, it is noted that an enlarged areal array leads to a higher S/N ratio and that different reflection waves are emphasized when the array direction is changed. 1 ref., 6 figs.

  11. Three dimensional reflection velocity analysis based on velocity model scan; Model scan ni yoru sanjigen hanshaha sokudo kaiseki

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-05-01

    Introduced herein is a reflection wave velocity analysis method using model scanning as a method for velocity estimation across a section, the estimation being useful in the construction of a velocity structure model in seismic exploration. In this method, a stripping type analysis is carried out, wherein optimum structure parameters are determined for reflection waves one after the other beginning with those from shallower parts. During this process, the velocity structures previously determined for the shallower parts are fixed and only the lowest of the layers undergoing analysis at the time is subjected to model scanning. To consider the bending of ray paths at each velocity boundaries involving shallower parts, the ray path tracing method is utilized for the calculation of the reflection travel time curve for the reflection surface being analyzed. Out of the reflection wave travel time curves calculated using various velocity structure models, one that suits best the actual reflection travel time is detected. The degree of matching between the calculated result and actual result is measured by use of data semblance in a time window provided centering about the calculated reflective wave travel time. The structure parameter is estimated on the basis of conditions for the maximum semblance. 1 ref., 4 figs.

  12. Supercritical carbon dioxide extractions of agricultural chemicals from aqueous solutions; Chorinkai nisankatanso ni yoru suiyoeki karano noyaku no chushitsu

    Energy Technology Data Exchange (ETDEWEB)

    Nakai, T.; Sato, Y.; Takahashi, N.; Kato, Y. [National Inst. for Resources and Environment, Tsukuba (Japan). Advanced Water Treatment Division

    1999-12-10

    Examination was made on the supercritical carbon dioxide extraction of agricultural chemicals from aqueous solutions. In the case of the semi batch extraction blowing supercritical carbon dioxide into the aqueous solutions at a concentration of 5 mg L{sup -1}, the dependencies of the removal ratios of four kinds of agricultural chemicals on temperature and pressure were shown in different patterns depending on the agricultural chemicals. For simazin (CAT), no unusual phenomena were observed. On the other hand, isoprothiolane (IPT) exhibited unusual phenomena. That is, the removal ratios decreased, as the pressure increased above 100 kg cm{sup -2} at temperatures of 45 degree C and 50 degree C. A similar phenomenon was observed for fenitrothion (MEP) or napropamide (NPP). Complicate pattern was shown for MEP. The removal ratios at pressures of 80 kg cm{sup -2} and 90 kg cm{sup -2} had maxima at 40 degree C and 45 degree C, respectively. These phenomena were discussed in terms of equilibrium and mass transfer. It was referred to that consideration should be given to such phenomena when the extraction technique is used for analysis. The order of the easiness of the separation of agricultural chemical from aqueous solution (that was estimated by the removal ratio at temperature of 35 degree C and pressure of 100 kg cm{sup -2}) was IPT>NPP>MEP>CAT. Correlation was seen between the removal ratio and the solubility of agricultural chemical in water, and in hexane or the melting point. (author)

  13. Regulation of IGFBP-1 gene expression by amino acids; Tanpakushitsu / aminosan ni yoru IGFBP-1 idenshi no hatsugen seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Takenaka, A. [Yamagata Univ. (Japan)

    1998-09-01

    IGFBP-1 is selected as a model, whose gene expression is regulated by dietary protein and amino acid, to outline the transcription regulating mechanism. Investigation is made to see if there is any IGFBP whose synthesis activity varies when the amount and nutritive value of dietary protein is varied. As a result, it is found that the IGFBP-1 concentration in the blood and mRNA in the liver increase largely corresponding to the decrease of the amount of dietary protein. At this time the transcription rates of IGFBP-1 gene in livers of rats increase in like manner, revealing that decrease of the amount of dietary protein has effect on the transcription process of IGFBP-1 genes. It is shown that liver cells increase IGFBP-1 synthesis in response to `deficiency of the amount of amino acid` in the transcription level. Reports are made on the results of studies on the transcription regulation of IGFBP-1 genes and the molecular structure of IGGBP-1 gene expression regulation by amino acid. 10 refs., 3 figs.

  14. Separation of baicalein from baicalin by means of solvent extraction; Yobai chushutsuho ni yoru baicalein /baicalin no bunri

    Energy Technology Data Exchange (ETDEWEB)

    Kitazaki, H.; Ishimaru, M. [Tsumura and Co., Ibaraki (Japan); Inoue, K.; Yoshida, K. [Saga University, Saga (Japan)

    1996-03-10

    In this work, solvent extraction behaviors of some commercial extractants such as tri-n-octylphosphine oxide (TOPO), Cyanex 923 and Cyanex 925 for baicalein and baicalin decocted from Suctellaria root, which is a crude drug, were examined to elucidate their mutual separation by solvent extraction. Baicalein was extracted selectively by trialkylphosphine oxides over baicalin. From analyses of the extraction mechanism the equilibrium constant of extraction reaction and enthalpy change were evaluated. A porous resin impregnated with Cyanex 923 in XAD-7 was prepared to remove baicalein from baicalin by using a column packed with the resin. Baicalein was able to be completely removed by this column operation. 10 refs., 11 figs., 1 tab.

  15. Fatty liver diagnosis support system using fuzzy theory; Fuzzy riron wo mochiita seikagagu deta ni yoru shibokan shindan shien

    Energy Technology Data Exchange (ETDEWEB)

    Saito, K.; Echigo, M.; Uchiyama, A. [Waseda Univ., Tokyo (Japan); Hashimoto, H. [Tokyo Women`s Medical College, Tokyo (Japan)

    1994-12-20

    It can be found here and there in group examinations that the liver function disease is indicated due to the result of biochemical blood test being slightly over the range of normal values. However, in such cases it is considered that a chronic function disease of liver has been advancing heretofore. It is possible to detect the liver function diseases in the early stage in such cases by adding the indication of the degree of the slow moving from the normal to abnormal to the method of classifying the test values in a form of all or nothing as the values within the normal range or out of the normal range. Concerning thereto, in this paper, a new method of finding out the relative positions and widths of membership functions in consequent clause using the occurring probabilities of fuzzy events and the data amount of fuzzy sets, and tuning them automatically by using learning data is suggested. Further, the possibility of applying this method to constituted a fatty liver diagnosis support system for detecting the possibility of fatty liver in various cases with the actual data of biochemical test is pointed out. 12 refs., 3 figs., 1 tab.

  16. Analysis of beam pumping system utilizing FRP sucker rod. FRP sakka roddo ni yoru ponpingu no kyodo kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Takahashi, Yasuo; Kurimura, Hideki (Teikoku Oil Co., Ltd., Tokyo (Japan))

    1989-11-01

    The performance of the FRP sucker rod pumping system in an oil field was analyzed. The analyses were carried out using programs of which diagrams of load and displacement at the pump location are determined from surface data by use of a dynamometer. The production rate of the FRP system fluctuates on a larger scale than the steel sucker rod pumping system even in a same condition, sometimes the production rate becomes nearly zero. This is due to large elasticity of FRP rods and cavitation of the pump. An effective plunger stroke (relate to the production rate) fluctuates markedly with fluctuations of the dynamical level because of high elasticity. Production capacity of the well is grasped accurately then submergence is kept to be a constant level, and an improved gas anchor is installed for measures against gas lock. Thus, stable production is achieved even with fluctuations of the dynamical level, as well as the increase of the production rate, the plunger stroke is not changed (if anything, it is longer than that of the steel rod). 2 refs., 7 figs., 3 tabs.

  17. Membrane thickness of microcapsules generated by complex coacervation method; Coacervation ho ni yoru microcapsule no capsule makuatsu

    Energy Technology Data Exchange (ETDEWEB)

    Kage, H.; Ogura, H.; Matsuno, Y. [Kyushu Institute of Technology, Kitakyushu (Japan); Yada, N. [Idemitsu Engineering Co. Ltd., Tokyo (Japan); Kunimasa, M. [Takeda Chemical Industries, Ltd., Osaka (Japan)

    1996-03-10

    Microencapsulation of glass beads was carried out by complex coacervation of gelatin and acacia. Glass beads were chosen as the core material, because their surface was easily treated to be hydrophobic. We succeeded in excluding the complicated influence of emulsion on microencapsulation by the use of the coacervation method and a solid core material with narrow size distribution. The membrane of the microcapsule became thick with the increase of acetic acid dosage, while encapsulation was prevented by its excess addition because of the low pH value in the hardening process. Hydrophobizing of the core surface decreased the amount of acetic acid required to microencapsulate. A thin membrane was obtained due to the existence of salt, however the membrane thickness conversely became thick with a minute quantity of salt. 12 refs., 13 figs.

  18. Glyco change of the vancomycin due to the chemical glycosylated; Kagaku gurikoshiruka ni yoru bankomaishin no tohenkaku

    Energy Technology Data Exchange (ETDEWEB)

    Fukuzawa, Seiketsu

    1999-09-01

    Glycopeptide antibiotic vancomycin is drawing attention of the organic composition chemist as a target of the composition from the peculiarity of that structure and the demand in medical treatment. I had the part of the aglycone, which consists of peptides made all the composition in 1997. However, effective activation isn`t shown, and the addition of the part of the sugar is indispensable only with an aglycone. The glycosylated of the part of the aglycone was done, and the re-composition was attained, and this completed all the formal composition. (NEDO)

  19. Evaluation of bio-energy potential using world energy models; Sekai energy model ni yoru bio energy no potential hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Fujino, J.; Yamaji, K. [The University of Tokyo, Tokyo (Japan); Yamamoto, H. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1997-01-30

    Bio-energy potential is evaluated using world energy models. The world energy model is a dynamic model by which the total cost of energy systems between 1995 and 2055 can be minimized on the basis of the optimization type world energy demand and supply model. For the given utilization costs of transportation, recovery and planting, the utilization of bio-energy is promoted even under the cost minimization condition. However, the utilization amount varies in a wide range by changing the utilization costs. Among conversion technologies of bio-energy, it is biomass liquefaction that provides the largest utilization amount. Thermal demand, direct combustion for power generation, and biomass gasification follow to the above. Biomass-integrated gasifier/gas turbine (BIG/GT) is to be used up to 2020. It is not to be used after 2030, due to the complete shift to the biomass liquefaction. For a model including the utilization of fast breeder after 2030, the utilization amount of bio-energy is not to change. Competition with food and land utilization is to be investigated. 11 refs., 19 figs., 4 tabs.

  20. Synthesis, characterization and magnetic properties of MFe{sub 2}O{sub 4} (M=Co, Mg, Mn, Ni) nanoparticles using ricin oil as capping agent

    Energy Technology Data Exchange (ETDEWEB)

    Gherca, Daniel [Faculty of Chemistry, Alexandru Ioan Cuza University, Blvd. Carol I nr 11, Iasi 700506 (Romania); Pui, Aurel, E-mail: aurel@uaic.ro [Faculty of Chemistry, Alexandru Ioan Cuza University, Blvd. Carol I nr 11, Iasi 700506 (Romania); Cornei, Nicoleta [Faculty of Chemistry, Alexandru Ioan Cuza University, Blvd. Carol I nr 11, Iasi 700506 (Romania); Cojocariu, Alina; Nica, Valentin; Caltun, Ovidiu [Faculty of Physics and Carpath Center, Alexandru Ioan Cuza University, Blvd. Carol I nr 11, Iasi 700506 (Romania)

    2012-11-15

    We focused on obtaining MFe{sub 2}O{sub 4} nanoparticles using ricin oil solution as surfactant and on their structural characterization and magnetic properties. The annealed samples at 500 Degree-Sign C in air for 6 h were analyzed for the crystal phase identification by powder X-ray diffraction using CuK{alpha} radiation. The particle size, the chemical composition and the morphology of the calcinated powders were characterized by scanning electron microscopy. All sintered samples contain only one phase, which has a cubic structure with crystallite sizes of 12-21 nm. From the infrared spectra of all samples were observed two strong bands around 600 and 400 cm{sup -1}, which correspond to the intrinsic lattice vibrations of octahedral and tetrahedral sites of the spinel structure, respectively, and characteristic vibration for capping agent. The magnetic properties of fine powders were investigated at room temperature by using a vibrating sample magnetometer. The room temperature M-H hysteresis loops show ferromagnetic behavior of the calcined samples, with specific saturation magnetization (M{sub s}) values ranging between 11 and 53 emu/g. - Highlights: Black-Right-Pointing-Pointer MFe{sub 2}O{sub 4} nanoparticles obtained using ricin oil as surfactant. Black-Right-Pointing-Pointer The structures were confirmed by SEM micrographs, FTIR spectra and XRD spectroscopy. Black-Right-Pointing-Pointer The samples contain only one phase with crystallite sizes of 12-21 nm.

  1. Synthesis, characterization and magnetic properties of MFe2O4 (M=Co, Mg, Mn, Ni) nanoparticles using ricin oil as capping agent

    International Nuclear Information System (INIS)

    We focused on obtaining MFe2O4 nanoparticles using ricin oil solution as surfactant and on their structural characterization and magnetic properties. The annealed samples at 500 °C in air for 6 h were analyzed for the crystal phase identification by powder X-ray diffraction using CuKα radiation. The particle size, the chemical composition and the morphology of the calcinated powders were characterized by scanning electron microscopy. All sintered samples contain only one phase, which has a cubic structure with crystallite sizes of 12–21 nm. From the infrared spectra of all samples were observed two strong bands around 600 and 400 cm−1, which correspond to the intrinsic lattice vibrations of octahedral and tetrahedral sites of the spinel structure, respectively, and characteristic vibration for capping agent. The magnetic properties of fine powders were investigated at room temperature by using a vibrating sample magnetometer. The room temperature M–H hysteresis loops show ferromagnetic behavior of the calcined samples, with specific saturation magnetization (Ms) values ranging between 11 and 53 emu/g. - Highlights: ► MFe2O4 nanoparticles obtained using ricin oil as surfactant. ► The structures were confirmed by SEM micrographs, FTIR spectra and XRD spectroscopy. ► The samples contain only one phase with crystallite sizes of 12–21 nm.

  2. Simultaneous fluorination of active material and conductive agent for improving the electrochemical performance of LiNi0.5Mn1.5O4 electrode for lithium-ion batteries

    Science.gov (United States)

    Song, Min Sang; Kim, Dae Sik; Park, Eunjun; Choi, Jae Man; Kim, Hansu

    2016-09-01

    High-voltage cathode materials have gained much attention as one of the promising electrode materials to increase power density of lithium ion batteries by raising the working voltage. However, the use of such high-voltage cathode materials is still challenging, because their working voltage is close to the electrochemical oxidation potential of organic electrolyte used in lithium ion batteries. In this work, we demonstrated that simultaneous fluorination of LiNi0.5Mn1.5O4 (LNMO) particles as well as conductive agent in the electrode could significantly improve the electrochemical stability of LNMO cathode. The resulting electrode showed better cycle performance both at room temperature and elevated temperature compared to both bare LNMO electrode and the electrode with only LNMO fluorinated. These results showed that direct fluorination of high voltage cathode can reduce the side reaction of high voltage cathode electrode with the electrolyte, thereby stabilizing the surface of carbon black as well as that of high voltage cathode material.

  3. Size tuned polyol-made Zn0.9M0.1Fe2O4 (M = Mn, Co, Ni) ferrite nanoparticles as potential heating agents for magnetic hyperthermia: from synthesis control to toxicity survey

    International Nuclear Information System (INIS)

    Zn-rich substituted Zn0.9M0.1Fe2O4 (M = Mn, Co, Ni) ferrite nanoparticles (NPs) of about 5 and 10 nm were produced by the so-called polyol method. They were engineered for hyperthermia therapy based on their magnetic and morphological properties. Indeed, because of their comparatively low Curie temperature and reasonable magnetization, these probes may turn into useful self-regulated heating agents under suitable conditions. For such a purpose, the structure, the microstructure, the magnetic and magnetocalorimetric properties of the produced NPs as well as their in vitro cytotoxicity were investigated. Our results demonstrate that the magnetic properties of these magnetically diluted spinel ferrite particles can be largely modified by just changing their size. They also show that the about 10 nm sized manganese-based ones exhibit the highest heating power under a 700 kHz ac magnetic field and the lowest cytotoxicity on Immortalized human umbilical vascular endothelial cells (HUVEC). (paper)

  4. Study on heavy duty truck stability control by braking force control; Seidoryoku seigyo ni yoru truck no sharyo kyodo anteika ni taisuru ichikosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Matsuda, K.; Shinjo, H.; Harada, M.; Ohata, K.; Sakata, K. [Mitsubishi Motors Corp., Tokyo (Japan)

    1997-10-01

    Now a days we are discussing about the vehicle stability control system which freely controls the braking force of each wheel to apply the yaw t and decelerate the vehicle. The system drastically improve the vehicle cornering performance and stabilize the vehicle behavior in its critical area. This paper discusses a point to notice in case of applying this technique for heavy duty trucks, and describes the possibility of the stabilization for vehicle cornering behavior about heavy duty truck. 3 refs., 10 figs., 2 tabs.

  5. Study on vibration fatigue damage due to the blow of OPGW aluminum tube; OPGW aluminium kan no kyofu ni yoru shindo hiro hason ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Aikawa, S.; Kohara, H. [Chugoku Electric Power Co. Inc., Hiroshima (Japan)

    2000-03-24

    The cause of damage in the cashing portion of an aluminum tube incorporating OPGW (OPAC 120mm{sup 2}) was investigated and proper measures for the prevention of recurrence were examined. The investigation result of the past accident of the same kind or the result of stress measurement showed that the cause of aluminum tube damage is the fatigue rupture based on the repeated stress occurring by the rolling of OPGW. Moreover, it was known that the attached wire in a jumper lead-in system is most effective and valid as preventative measures of damage. (translated by NEDO)

  6. Development of multi-filter spectroradiometry; Filter hoshiki ni yoru bunka hosharyo no keisoku hoho to sono supekutoru no hyogen hoho ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Miyake, Y.; Aoshima, T.; Minoda, T.; Kato, T.; Kondo, S. [Eiko Instruments Trading Co. Ltd., Tokyo (Japan)

    1996-10-27

    Described in this paper is a technique of solar radiation spectroradiometry in which high-resolution wavelength computation adds to a multi-filter method. The solar spectrum upon entering the atmosphere is scattered and absorbed by parameter-constituting elements such as gas, aerosol, cloud particles, etc., and its spectral contour is complicatedly deformed relative to wavelength. Taking advantage of the fact that the scattering and absorbing characteristics of some of the elements are constant relative to wavelength, a simple equation was constructed to enable high-resolution spectrum measurement wavelength-wise, and this compensates for the limit in measurable wavelength that the conventional multi-filter method suffers from. The new method discussed here is not so expensive as the grating method thanks to the employment of filters, is capable of determining spectral radiation quantities with a precision of {plus_minus}5%, and is reduced in terms of the capacity of memory for data storage. The new method enables data collection under various atmospheric conditions that the four seasons present, which the difficult-to-apply and expensive spectroradiometer fails. It is expected that this method will find its use in collecting basic data for the designing of photovoltaic power generation systems, in the study of photochemical reaction in agriculture, and in collecting basic data for daylight lighting. 1 ref., 6 figs., 2 tabs.

  7. Research on giving antibacteria activity of tailored dental materials; Gin ion ni yoru shikayo zairyo no kokinsei fuyo ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The secondary dental caries easily occur by breeding of bacteria in cavities between living body and composite resin, false tooth or root of tailored tooth as tooth repairing materials. The antibacteria activity of tailored dental materials was thus studied by implanting Ag ion. The antibacteria effect with time after culture of caries bacteria was studied by implanting Ag ion into SiO2 powder, PMMA samples and Ti alloy samples at 20 and 200keV in energy of ion. In addition, the antibacteria activity of SiO2 powder as composite material was found at 25keV which was previously effective for the antibacteria activity. This SiO2 filler (Ag{sup +} filler) showed the antibacteria activity on every bacteria sample after 2h, and in particular, could kill all of 3 kinds of bacteria obtained from a composite resin surface after 12h. The number of living S. salivarius was reduced by half after 12h. The application of the composite resin filler implanted with Ag{sup +} is significant to prevent recurrence of caries. 5 refs., 27 figs., 7 tabs.

  8. Investigation on innovation of technology development by means of strategic energy intelligence; Energy senryakurontekina approach ni yoru gijutsu kaihatsu no kakushin ni kansuru chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    For the purpose of developing the future innovative energy technology, the paper described a strategic point of view. Effects of the energy issue are remarkable on the next generation and thereafter as seen in the finite of energy resource, global-scale environmental changes, the increasing energy demand, natural/social influences of large-scale technology development. If the technological development is going on in the same way as until now, there will appear limits. Relating to the strategies, to seek what energy should be among the strategies, it is necessary to consider not only global-scale problems but particular conditions in Japan (self-sufficiency, international cooperation, creativity, etc.) Also, wisdom and technique are necessary to attain it. Technological development in a wide sense plays a major role in the energy strategy. Technology innovation must be advanced according to the energy strategy. Integrating ideology into the development of energy technology and selecting therefrom developmental subjects which meet the purpose, required is the construction of the energy system with high flexibility and functionality. Looking at the conventional way of thinking from a different angle and posing a future pull plan, Japan should show leadership to the world. 20 refs., 25 figs., 8 tabs.

  9. Results of geophysical survey on Hanaore-fault in the Kyoto urban area; Butsuri tansa ni yoru Kyoto shigaichi ni okeru Hanaore danso chosa

    Energy Technology Data Exchange (ETDEWEB)

    Yoshioka, T. [Geological Survey of Japan, Tsukuba (Japan); Echigo, T. [Osaka Soil Test, Osaka (Japan); Toshioka, T.; Matsubara, Y. [Oyo Corp., Tokyo (Japan)

    1997-05-27

    This paper reports results of gravity survey and seismic survey using the shallow bed reflection method to identify distribution of the Hanaore fault in the Kyoto urban area. In the gravity survey, level differential structure caused by the fault was identified as an abrupt change in Bouger anomalous values. The continuity therefrom made the estimation possible on existence and positions of such faults as the Hanaore fault belonging to the Hanaore fault system, the Shishigaya fault, the Kaguraoka fault, and the Okazaki fault. The estimation as a result of the gravity survey include the following findings: the Hanaore fault runs from south of the Yoshidayama in the south-north direction; the distribution of the Okazaki fault has a level differential structure falling on the east side; the structure shows low Bouger anomaly distribution; and this area forms a rift valley belt. In the seismic survey using the shallow bed reflection method, no distinct reflection plane considered as the basement was verified because of influence from urban area noise. However, it was possible to estimate such an underground structure as a monoclinal fold from shapes of the reflection plane and the distribution depths. 7 refs., 5 figs.

  10. Fundamental study on leak detection of underground gas pipeline using passive acoustic method; Judogata onkyo keisoku ni yoru maisetsu gas dokan hason kasho no kenshutsu ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Jinguji, M.; Imaizumi, H.; Kunimatsu, S.; Isei, T. [National Institute for Resources and Environment, Tsukuba (Japan)

    1997-05-27

    With an objective to detect gas leaking from an underground gas pipeline, discussions have been given on a method which utilizes acoustic characteristics of leakage. On leaking sound generated from damaged portions, the form of damaging was hypothesized as pinholes, and spectra of leaking sounds from holes with different diameters were measured. The dominant frequency decreases as the hole diameter increases, while it is in a region of relatively high frequency of 1 kHz or higher. However, detection from the ground surface was impossible when cover soil has thickness from 0.5 to 1.5 m. In an experiment to measure leaking sound inside the pipe, pressure in the pipe was adjusted to 0.02 atm which is a standard pressure for a low-pressure pipe, and the sound was measured when the hole diameters were varied. In any of the results obtained by varying the hole diameter, spectra having the dominant frequency in the region of 1 kHz or higher were measured. In addition, it was found that sound pressure difference of as much as 50 dB at maximum is generated as compared with a case of no sound leakage. The above results verified that monitoring the high frequency of 1 kHz or higher is effective in detecting leakage from small damages. 2 refs., 4 figs.

  11. Research of environmental bioecosensing technology using ecological information. Part 2; Seitaikei joho ni yoru kankyo bio ecosencing gijutsu ni kansuru chosa. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    Basic considerations of exploring and cultivating environmental reporter organisms are summarized. Mechanism of genetic engineering amplification and molecular biological amplification, and approach to combining them to a hardware as a bioindicator system are investigated. For the current status of molecular biological measurement technology for measuring ecological environment and its application, environmental diagnosis from a phyropathological viewpoint, environmental diagnosis using microorganisms, test fabrication of genetic sensor, and overseas examples of environmental monitoring network are described. For the application of ecological information and functions for developing innovative environmental remediation technology, issues and potential areas for research and development regarding the bioremediation technology in which the US has achieved a progress for the benefit of soil environment remediation are summarized. For the phytoremediation, an area of bioremediation, the metabolism of microorganisms which live in the rhizosphere, and the technology for controlling the microorganisms in the soil through plants are investigated. 66 refs., 50 figs., 17 tabs.

  12. Evaluation stationariness of triaxial seismic while drilling and detection of reflected wave; Kosei kussaku ni tomonau danseiha no sanjiku kaiseki ni yoru hiteijo hyoka to hanshaha no kenshutsu

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, T.; Asanuma, H.; Niitsuma, H. [Tohoku University, Sendai (Japan). Faculty of Engineering

    1996-05-01

    This paper reports a method to detect reflected wave components contained in an elastic wave caused in association with well drilling. Measurement was made on an elastic wave caused in association with well drilling in an experimental field by using a triaxial elastic wave detector disposed in a measurement well. Analyzing the particle motion tracks in the derived elastic wave signals (to derive the main axial direction of a three-dimensional hologram) revealed that oscillation direction of the signals changes non-steadily by time centering around the S-wave oscillation direction. In addition, a sound source position was estimated during the drilling. Existence probability of the S-wave signal in the non-steady continuous signals was estimated by handling the particle motion tracks stochastically. In addition, this existence probability was used as a weighting function for a correlative analysis to detect a reflected wave from directly reaching wave components in the non-steady continuous signals. Thus, improvement in reliability of reflected wave detection was attempted. Effectiveness of this method was endorsed by the field data. 3 refs., 7 figs.

  13. Interpretation SP anomaly caused by subsurface fluid flow; Chika ryudokei ni yoru shizen den`i anomaly no kaishaku ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Yasukawa, K. [Geological Survey of Japan, Tsukuba (Japan); Mogi, T.; Kawahira, M. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1996-05-01

    A PTSP simulator, developed by combining a fluid flow simulator and a simulator for computing the spontaneous potential (SP) out of flow velocity distribution, was used to investigate the impact of the distribution of terrain, permeability, and resistivity upon the ground surface SP. SP computation using simple models such as highlands or cliffs indicated that the terrain-caused SP anomaly was negatively dependent upon elevation. It was also indicated, however, that, in some types of resistivity distribution, the SP profile changes, the peak goes out of place, and even the apparent polarity may reverse in extreme cases. In the study of the SP profile for the Takeyu hot spa, Oita Prefecture, PTSP-aided modeling was carried out. It was then found that fluid flows caused by the terrain were not enough to explain the peak at the middle of the mountain, which suggested the existence of a fluid flow caused by temperature distribution. 11 refs., 5 figs.

  14. Interpretation of seismic section by acoustic modeling. Study of large amplitude events; Hadoba modeling ni yoru jishin tansa danmen no kaishaku. Kyoshinhaba event ni taisuru kosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Tamagawa, T.; Matsuoka, T.; Sato, T. [Japan Petroleum Exploration Corp., Tokyo (Japan); Minegishi, M.; Tsuru, T. [Japan National Oil Corp., Tokyo (Japan)

    1996-05-01

    A large amplitude event difficult to interpret was discovered in the overlap section in offset data beyond 10km targeting at deep structures, and the event was examined. A wave field modeling was carried out by use of a simplified synclinal structure model because it had been estimated that the large amplitude event had something to do with a synclinal structure. A pseudospectral program was used for modeling the wave field on the assumption that the synclinal structure model would be an acoustic body and that the surface would contain free boundaries and multiple reflection. It was found as the result that a discontinuous large amplitude event is mapped out in the synclinal part of the overlap section when a far trace is applied beyond the structure during a CMP overlap process. This can be attributed to the concentration of energy produced by multiple reflection in the synclinal part and by the reflection waves beyond the critical angle. Accordingly, it is possible that phenomena similar to those encountered in the modeling process are emerging during actual observation. 2 refs., 8 figs.

  15. Evaluation for characteristics of around the Nojima fault; Butsuri tansa ni yoru `Nojima jishin danso` shuhen no jiban bussei ni kansuru ichihyoka

    Energy Technology Data Exchange (ETDEWEB)

    Shimizu, K.; Tsuji, T. [Newjec Inc., Osaka (Japan); Tsuji, M. [OYO Corp., Tokyo (Japan)

    1996-05-01

    Various surveys were conducted for the area around the Nojima fault, including ground surface, two-dimensional electrical and boring surveys and elastic wave tomography, in order to grasp properties of the ground around the `Nojima earthquake fault.` The resistivity image method as one of the two-dimensional electrical methods was used to grasp fault shapes over a wide range of the 1.6km long section extending between Esaki and Hirabayashi. The courses of traverse were set in the direction almost perpendicular to the fault. Boreholes were excavated and elastic wave tomography was conducted between the boreholes on the 9th and 17th courses of traverse, to confirm ground/mountain conditions and to compare the results with observed elastic wave velocities. Very low resistivities are observed at places where granite is distributed, suggesting that the fault-induced changes are not limited to the area around the fault. The zone in which elastic wave velocity decreases is narrow, 10m at the longest, at a velocity of 2.4km/s or lower, which is a low velocity for that propagating in granite. 5 refs., 4 figs.

  16. Model experiments on imaging subsurface fracture permeability by pulsed Doppler borehole televiewer; Pulse doppler borehole televiewer ni yoru kiretsu tosuisei hyoka ni kansuru model jikken

    Energy Technology Data Exchange (ETDEWEB)

    Inagaki, Y.; Niitsuma, H. [Tohoku University, Sendai (Japan). Faculty of Engineering

    1996-05-01

    This paper reports model experiments to evaluate flow rates of fluids passing through a fracture by using a Doppler borehole televiewer (DBHTV). A supersonic transducer disposed on a well axis transmits transmission pulses, and a transducer receives scattered waves generated by particulates in water and waves reflected on a well wall. This signal is applied with time gating to extract only the scattered waves from particulates in the vicinity of the well wall. Deriving spectra in the recorded Doppler signal obtains flow velocity components in the direction of the well radius. A model was made with a polyvinylchloride pipe with a diameter of 14.6 cm to simulate a well, to which an aluminum pipe with an inner diameter of 2 mm is connected to be used as a simulated fracture, and mud water is circulated in the pipe. The result of deriving a passed flow volume in this model by integrating flow rate distribution derived by using the above method to a predetermined range in the vicinity of the fracture showed a good proportional relationship with actual flow rate in the simulated fracture. 1 ref., 7 figs.

  17. Study on automatic detection for magnetic particle indications using image processing; Gazo shori ni yoru jifun tansho no jidoka ni kansuru ichikokoromi

    Energy Technology Data Exchange (ETDEWEB)

    Sekine, K.; Suzuki, S.; Iwai, O. [Yokohama National Univ. (Japan). Faculty of Engineering

    1997-07-25

    Magnetic particle indications have a good detection ability to fine surface flaws in high magnetic materials mainly for iron and steel materials, and widely used in the quality inspection of semi-finished steel products and the maintenance inspection of welds due to their simplicity. In this study, concerning the experiment of the magnetic particle indications as an objective of cracks in steel welds including seam cracks of steel billets, the extraction of the flaw indications and the evaluation of its length were attempted by the application of a common personal computer and simple image processing technique. Moreover, the basic investigation on the evaluation of crack depth was conducted, the possibility of the automatic detection of cracks in welds during the maintenance inspection was examined. In the image processing system to detect crack indications, a reflecting light was produced by irradiating an ultra-violet light in the detecting part using two sets of black lights and it was taken by image processing equipment with a lens and camera system, and thus image data were obtained. 9 refs., 11 figs.

  18. Investigation of measurement conditions for automatic umu test by flow injection; Flow shiki hanno sochi ni yoru umu test no jidoka ni tomonau sokutei joken

    Energy Technology Data Exchange (ETDEWEB)

    Kobayashi, U.; Somiya, I.; Mori, S. [Kyoto University, Kyoto (Japan); Ono, Y> [Okayama University, Okayama (Japan)

    1997-11-10

    Various bioassays have been applied to evaluate safety of environmental water and treated water. The umu test is a method for the detection of genotoxicity by using SOS function of Salmonella typhimurium. The protocol of the umu test is divided into 5 phases, (1) pre-incubation of test strain, (2) addition of samples, (3) induction of umuC gene, (4) {beta}-galactosidase enzymatic reaction, and (5) measurement of absorption in a spectrophotometry and calculation of the activity. In usual procedure, all phases are performed in batch-type reactors, using test tubes. In this study, we tried to develop the device of flow-injection style to perform the umu test automatically. The culture was flowed through a tube and added samples by using a rotary pump. The various conditions were investigated and modified for detection of genotoxicity of AF-2. Even after 24hr of incubation under control, test strain showed activity. Within 1.5hr, the test strain was most active at 36degC and longer than 2.0hr, it was so at 37degC. At each phases some more conditions have been investigated, and we suggest that new device of flow-injection style could be effective to screen or monitor the genotoxicity of environmental water. 10 refs., 10 figs.

  19. Estimation of performance of a high-speed boat by using the Rankine source method; Kosokutei no rankinsosuho ni yoru seino suitei ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Eguchi, T. [Mitsui Engineering and Shipbuilding Co. Ltd., Tokyo (Japan)

    1997-10-01

    This paper describes estimation of performance of a high-speed boat by using the Rankine source method. An orthogonal coordinate system is considered, which uses the center of a hull as the zero point, and is made dimensionless by using the hull length. The catamaran boat or the single hull boat being the subject of the discussion is supposed to have a transom stern, and to be sailing at a constant speed in the -X direction. A governing equation and a border condition were formulated using disturbance speed potential and X-direction speed differentiation. An inverse specular image was employed as a specular image system upon considering attitude change in the high-speed boat. As to the division of hull surface, the portions protruded above the static water surface were cut off from among the panel data of boat CAD. Considering a high speed condition in which the water surface is completely separated at the transom section, the water level at the transom section was supposed to be at the same height as at the rear end of the hull. Blow-out intensity at the water surface was derived in such a way that a CAD panel of the rear end of the hull is searched and wave height agrees with the height of the transom in the Z direction. A resistance curve may be obtained easily by using a personal computer. 4 refs., 8 figs.

  20. Development of a new numerical method for visco-elastic flows using the GSMAC-method and the MUSCL-TVD method. Flows of Maxwell fluid through planer abrupt contraction; Kosei hoteishiki ni TVD gata MUSCL ho wo mochiita GSMAC ho ni yoru nendansei ryutai no kaiseki ni tekishita scheme kaihatsu. Maxwell ryutai no kyushuku shoheibannai nagare ni yoru kensho

    Energy Technology Data Exchange (ETDEWEB)

    Fujieda, T.; Tanahashi, T.; Okada, A. [Keio University, Tokyo (Japan). Faculty of Science and Technology; Kato, Y. [Asahi Glass Co. Ltd., Tokyo (Japan)

    1997-06-25

    In this paper, we propose a new GSMAC-FEM (generalized simplified marker and cell-finite element method) which is suited to the numerical analysis of visco-elastic fluids. The equation of continuity and the equation of momentum are solved by the GSMAC-FEM algorithm and the constitutive equation is solved by the finite volume method. This scheme employs the third order MUSCL (Monotone Upstream-centered Schemes for Conservation Law) in order to guarantee the absence of spurious oscillation near the steep gradients of the variable. This method uses a minmod limiter in order to satisfy the TVD (Total Variation Diminishing) condition. The present method employs the simultaneous relaxation of velocity and pressure for the incompressible condition. The flows of Maxwell fluid through two-dimensional planer abrupt contraction are calculated by the present method and the effects the Weissenberg number and the Reynolds number are discussed. 13 refs., 12 figs.

  1. Antibiotic Agents

    Science.gov (United States)

    ... either as public health or as non-public health antimicrobial agents. What is the difference between bacteriostats, sanitizers, disinfectants ... bacteria, however, there is considerable controversy surrounding their health benefits. The ... producing agents (Table of Antibacterials) have been used for many ...

  2. Relationship between the electric resistivity and the rain fall in discontinuity zone of rock slope by the continuous measurement; Renzoku tokei ni yoru ganban shamen no furenzokutaibu ni okeru mikake hiteiko henka to kou tono kankei ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Kusumi, H.; Nishida, K. [Kansai University, Osaka (Japan). Faculty of Engineering; Nakamura, M. [Newjec Inc., Osaka (Japan)

    1996-10-01

    The relationship between change in resistivity and rainfall was studied by continuously measuring resistivities of fracture zone and stratum boundary along the measuring line of 95m long from the top to bottom of rock slope. The measurement field was located on a hill of 150-200m high at the northern part of Arima-Takatsuki tectonic line. Electrodes of 30m in maximum measuring depth were arranged at 289 points by dipole-dipole method. Resistivity was continuously measured at time intervals of 6 hours. Apparent resistivity was hardly affected by rainfall at points with less infiltration of stormwater from the ground surface, while it decreased by rainfall at points on fracture zone, stratum boundary or bleeding channel. The change rate of apparent resistivity could be approximated with the exponential function of rainfall. In such case, the apparent resistivity under most dried condition at the concerned point should be used as reference maximum apparent resistivity. The change rate of apparent resistivity due to rainfall in fracture zone reflects infiltration of stormwater, suggesting to be useful for disaster prevention of slopes. 5 refs., 6 figs.

  3. Development of hydroponic system using agricultural waste. 2. Utilization of ozone for sterilization of nutrient solution; Suiko saibai ni okeru haikibutsu riyo gijutsu no kaihatsu. 2. Ozone ni yoru baiyoeki sakkin ni kansuru kento

    Energy Technology Data Exchange (ETDEWEB)

    Terazoe, H.; Yoshihara, T.; Nakaya, K. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1995-08-01

    Discussions were given on a sterilizing effect of ozone on Fusarium bacteria in hydroponic culture, and its effect on components in the culture solution. In an experiment, dry air with O3 concentration of 3.5 ppm was sent into aqueous solution inoculated with Fusarium bacteria at a flow rate of 5 liters per minute. The Fusarium bacteria was sterilized nearly completely in about five minutes. No change was observed in pH, EC and dissolved oxygen concentration of the O3-treated culture solution. However, iron and manganese among the soluble components have been oxidized by O3 and precipitated, hence these components must be added after the O3 treatment. In spinach culture performed on a culture medium inoculated with Fusarium bacteria, ozone water containing dissolved O3 at 0.8 ppm was flown into a urethane foam medium and vegetable roots. This treatment has resulted in reduction of the number of strains occurred with a wilt symptom below that in the section flown with distilled water. The spinach has grown normally without showing an effect of the ozone water. 15 refs., 10 figs., 3 tabs.

  4. Detection of the oscillation mode of measured waveforms in power systems by Prony analysis; Puroni kaisekiho ni yoru denryoku keito ni okeru jissoku hakei no doyo mode kenshutsu ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Shibata, K. [Kansai Electaric Power Co. Inc., Osaka (Japan)

    2000-04-01

    This paper describes the detection method of the oscillation modes by Prony analysis from measured data on power systems. A Prony analysis method can obtain the oscillation frequency and logarithmic damping rate corresponding to eigenvalue directly, and is suitable for detecting the oscillation modes. The analysis result showed that longer sampling intervals of 0.2-0.4s allows detection of the long-period oscillation modes from less data, and the index corresponding to waveform areas allows evaluation of the significance of each mode. It was also confirmed that a low-pass filter with a time constant of nearly 0.2s is effective for poor data including various noises, and correction of amplitude and phase shifts is possible by filter. In addition, the study result on application of a Prony analysis method to instantaneous value waveforms showed that analysis of harmonic characteristics is possible by selecting proper analytical parameters, and a Prony analysis method is applicable to analysis of measured data enough. (NEDO)

  5. Chelating agents in pharmacology, toxicology and therapeutics

    International Nuclear Information System (INIS)

    The proceedings contain 71 abstracts of papers. Fourteen abstracts were inputted in INIS. The topics covered include: the effects of chelating agents on the retention of 63Ni, 109Cd, 203Hg, 144Ce, 95Nb and the excretion of 210Po, 63Ni, 48V, 239Pu, 241Am, 54Mn; the applications of tracer techniques for studies of the efficacy of chelation therapy in patients with heart and brain disorders; and the treatment of metal poisoning with chelating agents. (J.P.)

  6. Residual stress in Ni-W electrodeposits

    DEFF Research Database (Denmark)

    Mizushima, Io; Tang, Peter Torben; Hansen, Hans Nørgaard;

    2006-01-01

    In the present work, the residual stress in Ni–W layers electrodeposited from electrolytes based on NiSO4 and Na2WO4, is investigated. Citrate, glycine and triethanolamine were used as complexing agents, enabling complex formation between the nickel ion and tungstate. The results show that the ty...

  7. Laboratory investigation on streaming potential for sandy soil and weathered rock; Shitsunai jikken ni yoru sashitsu jiban oyobi fuka ganban no ryudo den`i no kento

    Energy Technology Data Exchange (ETDEWEB)

    Sato, H.; Shima, H. [OYO Corp., Tokyo (Japan)

    1996-10-01

    Laboratory experiment on sandy soil and weathered rock was conducted to clarify the generation mechanism of streaming potential due to underground fluid. Streaming potential is caused by underground fluid flow, namely by fluid flow in porous substances as electrokinetic phenomenon. In experiment, Inagi sand, Toyoura sand and strongly decomposed weathered granite were used. In Inagi and Toyoura sands, positive streaming potential was observed downstream in fluid flow. Streaming potential could be nearly determined as primary function of fluid velocity, and generated streaming potential increased with fluid resistivity. Streaming potential was higher in Inagi sand than Toyoura sand, probably depending on hydraulic radius, size of bleeding channel, and conductivity of sand surface. In weathered granite, negative streaming potential was measured. In the case of positive {zeta} potential, negative streaming potential is theoretically generated downstream in fluid flow. This experiment suggested possible generation of negative streaming potential in some kinds of ground. 2 refs., 6 figs., 1 tab.

  8. Computational study on full-wave inversion based on the acoustic wave-equation; Onkyoha hado hoteishiki full wave inversion no model keisan ni yoru kento

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-10-01

    The effect of initial models on full-wave inversion (FWI) analysis based on acoustic wave-equation was studied for elastic wave tomography of underground structures. At present, travel time inversion using initial motion travel time is generally used, and inverse analysis is conducted using the concept `ray,` assuming very high wave frequency. Although this method can derive stable solutions relatively unaffected by initial model, it uses only the data of initial motion travel time. FWI calculates theoretical waveform at each receiver using all of observed waveforms as data by wave equation modeling where 2-D underground structure is calculated by difference calculus under the assumption that wave propagation is described by wave equation of P wave. Although it is a weak point that FWI is easily affected by noises in an initial model and data, it is featured by high resolution of solutions. This method offers very excellent convergence as a proper initial model is used, resulting in sufficient performance, however, it is strongly affected by initial model. 2 refs., 7 figs., 1 tab.

  9. Inversion of Love wave phase velocity using smoothness-constrained least-squares technique; Heikatsuka seiyakutsuki saisho jijoho ni yoru love ha iso sokudo no inversion

    Energy Technology Data Exchange (ETDEWEB)

    Kawamura, S. [Nippon Geophysical Prospecting Co. Ltd., Tokyo (Japan)

    1996-10-01

    Smoothness-constrained least-squares technique with ABIC minimization was applied to the inversion of phase velocity of surface waves during geophysical exploration, to confirm its usefulness. Since this study aimed mainly at the applicability of the technique, Love wave was used which is easier to treat theoretically than Rayleigh wave. Stable successive approximation solutions could be obtained by the repeated improvement of velocity model of S-wave, and an objective model with high reliability could be determined. While, for the inversion with simple minimization of the residuals squares sum, stable solutions could be obtained by the repeated improvement, but the judgment of convergence was very hard due to the smoothness-constraint, which might make the obtained model in a state of over-fitting. In this study, Love wave was used to examine the applicability of the smoothness-constrained least-squares technique with ABIC minimization. Applicability of this to Rayleigh wave will be investigated. 8 refs.

  10. Simulation by using model of two species of biomass on biological phosphorus removal processes. Seibutsugaku teki datsu rin katei no niso seibutsu model ni yoru simulation

    Energy Technology Data Exchange (ETDEWEB)

    Cho, H.; Suzuki, M. (Univ. of Tokyo, Tokyo (Japan). Inst. of Industrial Science)

    1990-07-10

    This study experimented with a simple model on the process of biological phosphorus removal by anaerobic/aerobic processes in order to estimate the changes in the concentration of phosphorus and biomass. In this model, assuming that an active sludge is constituted of two phases of phosphorus removability and non-phosphorus removability in microorganisms, characteristics in the change of concentrations of phosphous and biomass in a cycle period were examined. According to the study on the factors affecting the phosphorus concentration change during a cycle period, content of microorganisms capable of removing phosphorus in the chamber and the concentration of organic materials in the initial anaerobic stage greatly influence the behavior of phosphorus. In addition, the comparative study with the experimental results indicates that this model can roughly, accurately express the characteristics of concentration change. However, the future problem left is a proposal of a model which can apply to the accummulation and and decomposition of the biomass in the non-phosphorus microorganisms. 18 refs., 6 figs., 2 tabs.

  11. Development of spherical fine powders by high-pressure water atomization using swirl water jet; Senkaisui jet wo mochiita koatsusui atomize ni yoru kyujo bifun no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Kikukawa, M.; Matsumoto, S.; Inaba, T.; Iwatsu, O.; Takeda, T. [Fukuda Metal Foil and Powder Co. Ltd., Kyoto (Japan)

    2000-05-15

    In order to obtain spherical fine powders, a new high-pressure water atomization method using swirl water jet was developed. In this paper the effects of jet swirl angle ({omega}) upon the properties of powders were investigated. Cu-10 mass%Sn alloy was atomized by this method at the constant water pressure of 83.3 MPa and constant metal orifice diameter of 4mm, while {omega} was varied from 0 to 0.18 rad. Median diameter of the powder by the laser diffraction method (D{sub 50}) decreased from 12.5 {mu}m to 7.5{mu}m with increasing {omega}, and this corresponded to Fisher average diameter (D{sub FS}) at about w=0.18 rad. The apparent and tap density of the powder increased about 1 and 1.5 Mg/m{sup 3} respectively, and the particle shape observed by SEM became spherical with increasing {omega}. (author)

  12. Phenol recovery by BPA tar hydrolysis in supercritical water; Chorinkaisuichu deno BPA tar no kasui bunkai ni yoru phenol no kaishu

    Energy Technology Data Exchange (ETDEWEB)

    Adschiri, T. Shibata, R.; Arai, K. [Tohoku University, Sendai (Japan). Faculty of Engineering

    1997-07-01

    Bisphenol-A (BPA) tar which is a heavy residue of petrochemical plant distillation is examined for efficient recovery in supercritical water. BPA is decomposed in supercritical water at 673K under 20-38MPa, when 2-(4-hydroxyphenyl)-2-propanol (HPP) and phenol are produced thanks to hydrolysis. HPP is further hydrolyzed for the production of phenol or 4-isopropylphenol. With an increase in supercritical water, the hydrolysis of HPP grows dominant, enabling a high yield of phenol. This is because an increase in water density results in an increase the dielectric constant, which stabilizes polar-activated intermediates for the acceleration of hydrolysis. Even in the actual processing of BPA tar, hydrolysis can procede while the formation of polymers is suppressed, and this reaction advances more efficiently when the water density is higher. The maximum phenol yield is 40wt% or higher against the raw material, equivalent to a phenol structure recovery rate of 60mol%. 12 refs., 9 figs., 1 tab.

  13. Classification and correlation of miocene tuffs in the Kanto area using zircon crystal morphology. Zircon no kessho keitai ni yoru Kanto chiho no chushinseigyokaigan no bunrui to taihi

    Energy Technology Data Exchange (ETDEWEB)

    Takahashi, M. (Geological Survey of Japan, Tsukuba (Japan)); Hayashi, M. (Kyushu University, Fukuoka (Japan). Geothermal Research Center)

    1991-06-16

    Samples were collected from Miocene tuffs widely distributed on Takasaki area, Iwatono Hill, and Karasuyama area in the Kanto district. Zircon crystals were separated from seven samples in them, and the crystal morphology was investigated. Seven samples can be divided into two groups, one is characterized by zircon crystals of the 100 dominant type and short prismatic, and Kt-1 (Kitamura Tuff), I-8 (Shogunzawa Tuff) and Og-1 belong to this group. The other group is characterized by zircon crystals of the intermediate type and prismatic, and Bb-1 (Baba Tuff), I-12 (Okuda Tuff), Og-25 and Og-52 (Iwako Tuff Member) belong to this group. Other data, including micro fossils and radiometric ages, support the above division. The quantitative description is reliable as one of the standard criteria for the geologic correlation of tuff layers over a wide area. 33 refs., 4 figs., 1 tab.

  14. Evaluation of the force rum flotation result by the ion exchange using the rubidium; Rubijiumu wo mochiita ion kokan ni yoru karamu fusen kekka no hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Kamiyama, Jun' ichi [Osaka University, Osaka (Japan); Fujimoto, Hidekazu; Matsukata, Masahiko

    1999-05-05

    The following are contained: Hydroxyl group and carbonyl, functional oxygen group and mineral like the carboxyl group in which the coal is the hydrophilic component. The column flotation result is greatly different, since existence proportion of these components is different by the coal type. We regarded it as whether it could not simply evaluate the force rum flotation result of the coal at area proportion of the syneresis site on the coal particle exterior. In this study, the force rum flotation was carried out using balance wheel (bituminous coal), mountain west (anthracite), bituminous coal, and Illinois (lignit) charcoal it is almost same (bituminous coal). The ladder of carbon material recovery rate was the balance wheel > Kawanishi > almost same > Illinois charcoal. Next, area proportion ({alpha}{sub ex-OH}, {alpha}{sub in-OH} respectively) of the hydrophilic site in coal particle exterior and particle inside {alpha}{sub ex-OH} was obtained. In case of the almost same charcoal, was bigger than {alpha}{sub in-OH}. It seems to slightly oxidize the particle surface the almost same charcoal. In 3 kinds of bituminous coal, the ladder of carbon material recovery rate and {alpha}{sub in-OH} agreed. However, it is necessary to consider not only area proportion but also wettability of the hydrophobic site of the hydrophilic site for the planktonic of mountain west charcoal which is the anthracite. (translated by NEDO)

  15. 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.

  16. Depolymerization of coal by O2 oxidation followed by acid hydrolysis; Sanso sanka-kasui bunkai ni yoru sekitan no teionkai jugo

    Energy Technology Data Exchange (ETDEWEB)

    Aizawa, S.; Hayashi, J.; Kumagai, H.; Chiba, T. [Hokkaido University, Sapporo (Japan). Center for Advanced Research of Energy Technology; Morooka, S. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1996-10-28

    With an objective to elucidate characteristics of oxygen addition to coal, and characteristics of solvent extraction by means of depolymerization, experiments were performed on oxygen oxidation and acid hydrolysis of brown coals. Coals used for the experiments are Morwell (MW), Yallourn (YL) , South Banko (SB) and Wyoming (WY) coals. Test samples were suspended in weak alkaline aqueous solution, and then oxygen was blown into them with pressure kept at atmospheric pressure. After a lapse of a predetermined time, the samples were cooled, and made as acidic as pH 1.3 in hydrochloric acid, followed by acid hydrolysis. Oxygen consumption increased with the reaction time, and with the MW coal, one mol oxygen reacted to 11 mols of coal. Spectral analysis on the YL and WY coal experiments revealed that aliphatic carbon combined with aromatic carbon or ether group has turned to peroxide, whose C-C or C-O bond was broken down as a result of acid hydrolysis of the peroxide, producing oxygen containing compounds. As a result of the depolymerization, the rate of extraction by using DMF, DMSO and methanol/THF mixed solvent increased to 90% or higher. Proportion of bond and cutting-off affects largely collapse of the cross-link structure. The carbon conversion to volatiles was at most 4%. 1 ref., 10 figs.

  17. Estimation for origin of coals on biomaker analysis; Jinko sekitan oyobi tennen sekitan no biomaker bunseki ni yoru sekitan kigen busshitsu no suitei

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Y. [Geological Survey of Japan, Tsukuba (Japan); Sugimoto, Y. [National Institute of Materials and Chemical Research, Tsukuba (Japan); Okada, K. [Coal Mining Research Center, Tokyo (Japan)

    1996-10-28

    In order to study coal production processes, an estimation study was carried out on coal originating materials by using biomaker analysis. Test samples are original coals collected directly from a mine in Hokkaido (not having been subjected cleaning). Mixing and solvent extraction were performed after pulverization, and then tests were given on saturated hydrocarbon components divided by using a silicagel column chromatograph for the present study. It can be known from n-alkane distribution in the coal that low molecular alkane increases with increasing degree of coalification. Artificial coal made by wet-heating Metasequoia leaves contains only little n-alkane. Diterpenoid compound exists in the Taiheiyo and Akabira coals. Tetra-cyclic diterpernoid is contained abundantly in subtropical coniferous trees, serving as a parameter for warm environment. The compound is contained also in the Fushun coal, but not in Indonesian coals. Hopanoid constitution shows very high similarity, but H/C atomic ratio may vary largely even if the coalification is at the same degree. This is likely to be caused from difference in originating materials. Hopanoids are bacteria attributed substances, whose activities are not affected by the originating materials. 2 figs., 1 tab.

  18. Coal structure construction system with construction knowledge and partial energy evaluation; Kochiku chishiki to bubunteki energy hyoka ni yoru sekitan bunshi kozo kochiku system

    Energy Technology Data Exchange (ETDEWEB)

    Okawa, T.; Sasai, T.; Komoda, N. [Osaka University, Osaka (Japan). Faculty of Engineering

    1996-10-28

    The computer aided coal structure construction system is proposed, and a computational construction example is presented. The coal structure construction engine of this system fabricates molecular structure by connecting fragments sequentially inputted through a user interface. The best structure candidate is determined using construction knowledge and partial energy evaluation every addition of one fragment, and this process is subsequently repeated. The structure evaluation engine analyzes the 3-D conformation candidate by molecular dynamics, and evaluates the conformation by determining the energy value of an optimum structure. As an example, this system was applied to construction of coal molecular structure based on the actual data of partial structure composed of 26 structures from 2l kinds of aromatic cluster structures, 27 bonds from 2 kinds of bridged bonds, and 16 groups from 2 kinds of terminal substitutional groups. As a result, this system could construct a superior structure according to expert knowledge from the viewpoint of energy. 6 refs., 5 figs., 2 tabs.

  19. Characterization of interactions of coal surface with solvent by flow microcalorimetric measurement. 3; Netsuryo sokutei ni yoru sekitan hyomen to yozai tono sogo sayo no hyoka. 3

    Energy Technology Data Exchange (ETDEWEB)

    Wang, N.; Sasaki, M.; Yoshida, T. [Hokkaido National Industrial Research Institute, Sapporo (Japan); Kotanigawa, T. [Japan International Corporation Agency, Tokyo (Japan)

    1996-10-28

    An investigation was given on the relationship between methanol adsorbing behavior of reformed coal surface and oxygen containing functional groups in coal. Akabira bituminous coal was air-oxidized or Yallourn brown coal was decarbonated in oil as a reformation treatment. Both of the treated and untreated coals showed an adsorption heat curve of the Langmuir type. The Akabira coal had its oxygen content and the adsorption heat increased as a result of the air oxidizing reformation treatment. The Yallourn coal had its oxygen content and adsorption heat decreased as a result decarbonation reformation treatment. Oxygen containing functional groups act as strong adsorption sites for methanol, and the maximum adsorption amount depends on oxygen content in the coals. Since the coal surface is non-uniform in terms of energy, methanol is adsorbed first into sites with higher molar adsorption heat, and then into lower sites sequentially. Therefore, distribution of the molar adsorption heat can be derived from the relationship between adsorption amount and adsorption heat by changing methanol adsorption amount. The distribution of molar adsorption heat becomes broader when the oxygen content is high, and narrower when low. 2 refs., 2 figs.

  20. Quantitative measurements of air-fuel mixture distribution in a cylinder using LIF; LIF ni yoru tonai kongoki nodo no teiryoteki keisoku

    Energy Technology Data Exchange (ETDEWEB)

    Kato, S.; Kadoi, N. [Subaru Research Center, Tokyo (Japan)

    1997-10-01

    It is necessary to understand the mechanisms of mixture formation in a cylinder to improve engine performance, especially for a gasoline direct injection engine. In this study, a quantitative air-fuel mixture measurement technique using PLIF was developed. Across a laser sheet, a transparent liner was placed between two calibration cells which increased the reliability of fuel concentration. This technique was applied to gasoline direct injection engine to clarify the effect of injection timing on stratified charged mixture. 4 refs., 6 figs., 3 tabs.

  1. Analysis of combustion in an ATAC engine with measurement of radical luminescence; Radical hakko keisoku ni yoru ATAC engine no nensho kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Park, Y.; Oguma, H.; Ueda, H.; Iida, N. [Keio University, Tokyo (Japan)

    1997-10-01

    In order to make clear of the combustion mechanism and the frame structure in two stake, so called, active thermo-atmosphere combustion (ATAC) engine fueled by gasoline and methanol, we measured the 2-demensional images of OH, CH and C2 radical band spectra in both ATAC and SI combustion mode. From the results of pressure data in the cylinder, the heat release rate was calculated. We evaluated the correlation of radical luminescence intensity and the rate of heat release. 3 refs., 4 figs., 2 tabs.

  2. Study of lightning attack location by detecting polarization fluctuation in OPGW; OPGW denpako no henpa hendo ni yoru sodensen raigekiten hyotei no kento

    Energy Technology Data Exchange (ETDEWEB)

    Kurono, M.; Kuribara, M.; Asakawa, S. [Central Research Institute of Electric Power Industry, Tokyo (Japan); Sumitani, H. [Chugoku Electric Power Co. Inc., Hiroshima (Japan)

    1997-04-01

    A method has been established by which lightning attack location can be automatically measured by detecting polarization fluctuation in OPGW. A return transmission method and a two way transmission method were proposed, and their characteristics were made clear. For the both methods, optical fiber is used as detecting and transmission media. Additional equipment such as fault locator, the conventional linkage apparatus to transmission line is not required. Optical fiber can be also used as optical communication circuit using wavelength multiplex. For the return transmission method, two times of rising polarization fluctuations can be separated using delaying fiber. Tailings of the fluctuation are often overlapped. A value of polarization fluctuation velocity d{beta} was determined from instantaneous differential values of three measured polarization components. Thus, a method has been proposed by which the lightning attack time can be derived from the peak time. The fluctuation peak could be distinguished from the waveform of d{beta} using data of largest lightning attack polarization fluctuations, and the distances to the lightning attack spots could be calculated. The lightning location agreed well with the result of location by LLS. 9 refs., 16 figs., 8 tabs.

  3. Experiment on measuring temperature distribution in OPGW as a result of electric heating; OPGW tsuden kanetsu ni yoru ondo bunpu sokutei jikken

    Energy Technology Data Exchange (ETDEWEB)

    Yamashita, I. [Kansai Electric Power Co. Inc., Osaka (Japan)

    1998-11-10

    An experiment was performed on measuring variation in temperatures in the lengthwise direction when optical fibers laid on an overhead power transmission line (OPGW) are heated electrically and by using arc discharge. The OPGW has a structure that the optical fibers are wrapped by a metallic sheathing made of aluminum for example. The OPGW can be heated when the sheathing is energized electrically or given arc discharge. A 40-m OPGW was laid in insulated condition with a tensile force of 500 kg. The core wire was extended for 100 m by using an optic fiber cord, and connected to a temperature measuring instrument. Large current pulse was applied for electric heating to measure temperature variation in the OPGW. A change in which temperature rises sharply during the energization was measured successfully. The measured value agreed well with that from a thermocouple. Both ends of the OPGW were grounded, and arc discharge was made from a discharge electrode connected to a central voltage generator. Experiments were carried out with three patterns of charge of 50C, 100C and 200C with the discharge time set to 20 ms. It was possible to measure the temperature rise variation during the discharge. Measurements using GI fibers achieved good results on time resolution and temperature resolution, verifying the effectiveness of an optical fiber sensor as the temperature measuring technology. (NEDO)

  4. Thermal design verification of large reflectors using flight data; Flight data ni yoru ETS-VI tosai ogata hanshakyo no netsusekkei hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Miyasaka, A.; Tsunoda, H.; Ayatsuka, Y. [Nippon Telegraph and Telephone Corp., Tokyo (Japan)

    1996-03-05

    Evaluations were given on flight data of the large reflectors mounted on the engineering test satellite VI (ETS-VI) launched on the H-II rocket. Effects of albedo by the earth and infrared radiation on the main reflector mirror temperatures were derived by using a heat quantity analysis. The values thereof that the main reflector mirror absorbs at a perigee reached 25 and 50 W/m{sup 2} respectively, whereas it was found that their effects cannot be ignored since the solar light absorption is close to zero. Even on the winter solstice at which solar light radiation reaches its maximum, the highest temperature on the main reflector mirror was 70{degree}C, and the maximum temperature difference in the mirror was 120{degree}C, both being within the tolerance. The temperature on the main reflector mirror was about -130{degree}C while in an ellipse orbit (about 10 degrees lower than the static orbit) between eclipses at the apogee where there is no thermal input by the infrared radiation and the albedo. This temperature is higher than the minimum allowable temperature. In addition, it was estimated that the temperature difference in the mirror surface should be small when it moves to an eclipse. 5 refs., 10 figs.

  5. Three dimensional numerical modeling for ground penetrating radar using finite difference time domain (FDTD) method; Jikan ryoiki yugen sabunho ni yoru chika radar no sanjigen suchi modeling

    Energy Technology Data Exchange (ETDEWEB)

    Sanada, Y.; Ashida, Y.; Sassa, K. [Kyoto University, Kyoto (Japan)

    1996-10-01

    3-D numerical modeling by FDTD method was studied for ground penetrating radar. Radar radiates electromagnetic wave, and determines the existence and distance of objects by reflection wave. Ground penetrating radar uses the above functions for underground surveys, however, its resolution and velocity analysis accuracy are problems. In particular, propagation characteristics of electromagnetic wave in media such as heterogeneous and anisotropic soil and rock are essential. The behavior of electromagnetic wave in the ground could be precisely reproduced by 3-D numerical modeling using FDTD method. FDTD method makes precise analysis in time domain and electric and magnetic fields possible by sequentially calculating the difference equation of Maxwell`s equation. Because of the high calculation efficiency of FDTD method, more precise complicated analysis can be expected by using the latest advanced computers. The numerical model and calculation example are illustrated for surface type electromagnetic pulse ground penetrating radar assuming the survey of steel pipes of 1m deep. 4 refs., 3 figs., 1 tab.

  6. Numerical solution of thermal and fluid flow with phase change by VOF method; VOF ho ni yoru sohenka wo tomonau netsuryudo no suchikaiho

    Energy Technology Data Exchange (ETDEWEB)

    Shirakawa, H.; Satonaka, S. [Kumamoto University, Kumamoto (Japan); Takata, Y.; Kuroki, T.; Ito, T. [Kyushu University, Fukuoka (Japan)

    2000-09-25

    Numerical method for thermal and fluid flow with free surface and phase change has been developed. Equations of continuity, Navier-Stokes and energy are solved simultaneously both for liquid and vapor phases. The calculation result of one-dimensional solidification problem agrees with Neumann's theoretical value. In the evaporation of liquid film, the flow caused by volume change with phase change can be calculated. We applied it to a bubble growth in superheated liquid and obtained the result that a bubble grows with spherical shape. The present method can be applicable to various phase change problems. (author)

  7. Operating condition and membrane thickness of microcapsules generated by complex coacervation method; Coacervation ho ni yoru seisei microcapsule no sosa joken to capsule makuatsu

    Energy Technology Data Exchange (ETDEWEB)

    Kage, H.; Ogura, H.; Matsuno, Y. [Kyushu Institute of Technology, Kitakyushu (Japan); Kunimasa, M. [Takeda Chemical Industries, Ltd., Osaka (Japan); Kawahara, H. [Dainippon Ink Chemicals, Inc., Tokyo (Japan)

    1996-03-10

    Microencapsulation of glass beads with a narrow size distribution was carried out by complex coacervation of gelatin and acacia. The coacervation process was observed in detail and the effects of agitation strength, cooling rate, addition time of core material, addition plans of acetic acid and distilled water, and heating rate in the hardening process on membrane thickness of the microcapsules were investigated systematically. The membrane thickness of the microcapsules increased under the operating conditions where low cooling rate and relatively strong agitation were utilized, and pH was changed moderately by discrete addition of acetic acid or distilled water over a certain time interval. It became clear that strict control of operating conditions at 19{degree}C in the cooling process where the viscosity of the coacervate suddenly increases is remarkably important for the control of membrane thickness. 3 refs., 9 figs., 3 tabs.

  8. Three dimensional transient electromagnetic model study for fracture prediction from tunnel face; Sanjigen model keisan ni yoru TEM ho no tunnel zenpo tansa eno tekiyosei no kento

    Energy Technology Data Exchange (ETDEWEB)

    Wada, K.; Tsutsui, T.; Saito, A. [Mitsui Mineral Development Engineering Co. Ltd., Tokyo (Japan); Hara, T. [Toda Corp., Tokyo, (Japan); Zhdanov, M. [University of Utah, UT (United States)

    1996-10-01

    In order to apply TEM model to fracture prediction at tunnel face, 3-D TEM model computation by FEM was conducted by installing a transmission loop on a tunnel face. MT field responses diffusing into the 3-D model were computed by time-domain difference calculus, and analytical precision was improved by introducing a staggered grid method. In the case where a low resistive zone exists before a tunnel face, time variance in diffused eddy current and induction current in the low resistive zone could be obtained. The difference in tunnel-axial transient curve (transient phenomenon curve in magnetic field) between uniform medium and low resistive zone models was based on the absorption process of diffused eddy current into the low resistive zone, and the expanding process of it toward the outside. Change in background condition could be predicted from the background and the ratio of transient curves every measurement. The detection limit of the low resistive zone was dependent on resistivity contrast, distance and geometry. Fluctuation in measurement due to noises and S/N ratio were also essential. 3 refs., 10 figs.

  9. Evaluation of earth pressure on triple multi-face shield tunnel based on centrifuge model tests; Enshin mokei jikken ni yoru yoko sanren shield tunnel no doatsu hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Sugihara, Y.; Igarashi, H.; Fujisaki, K. [Kajima Corp., Tokyo (Japan)

    1995-12-20

    Recently, various needs for the utilization of underground space in urban areas, i.e., those for utilizing underground spaces with complicated cross-section shapes, have been encouraging the research and development of new shield methods. There have been considerations of building many tunnels with various cross-section shapes, such as horizontal double multi-face, horizontal triple multi-face, vertical double multi-face, MMST (multi-micro shield tunnel), and large-section tunnels with combinations of those shapes. The horizontal triple multi-face shield method is a new technique applied to underground railway stations with respect to construction period and safety. Since the horizontal triple multi-face shield tunnel has a laterally flatter shape than the former one circle shield tunnel, it is necessary to verify the validity of design using a usual method of evaluating earth pressure mainly for circle cross-sections. Therefore, the force on segments and deformation of surrounding soil were measured by using a centrifuge model equipment. Consequently, it was found that the earth pressure on horizontal triple multi-face shield segments in sandy ground is between earth pressure as evaluated by Terzaghi`s method and full earth pressure. 5 refs., 14 figs., 3 tabs.

  10. Analysis of stress distribution of timing belts by FEM; Yugen yosoho ni yoru timing belt oryoku kaiseki (belt code oryoku bunpu kaiseki hokoku)

    Energy Technology Data Exchange (ETDEWEB)

    Furukawa, Y.; Tomono, K.; Takahashi, H.; Uchida, T. [Honda R and D Co. Ltd., Tokyo (Japan)

    1997-10-01

    A model of the belt analyzed by-ABAQUS (: a general nonlinear finite element program) successfully confirmed the mechanism that generates the belt cord stress. A quite good agreement between experimental and computed results for the stress distribution of the belt cord. It is found that maximum stress of the cords occurs near the root of the tooth by calculation, where the belt cords break off. 3 refs., 9 figs.

  11. Development of aluminium viscous damper by high speed MIG welding process; Kosoku MIG yosetsuho ni yoru aluminium sei viscous damper no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Hino, H.; Hotta, M. [Nippon Light Metal Co. Ltd., Tokyo (Japan); Maeda, Y.; Shimizu, H. [Fukoku Co. Ltd., Saitama (Japan)

    1997-10-01

    We have developed a welded aluminum viscous damper to improve the joining strength between the case and the cover of the conventional damper mechanically fastened by adhesion. The distortion of the welded damper was decreased to an acceptable level using the high speed MIG welding process. Sound quality and good appearance were obtained by optimizing the initial speed of the filler wire and by controlling the welding conditions at the starting part and in the lap part. The leakage load and the fatigue limit of the welded damper were 5 and 10 times those of the conventional damper, respectively. 3 refs., 15 figs.

  12. Electricity demand and the structure in Japan. Examination using time series analysis; Nippon denryoku juyo no suii to sono kozo. Jikeiretsu bunseki ni yoru kento

    Energy Technology Data Exchange (ETDEWEB)

    Kato, H. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1996-12-25

    Stable supply of power was studied by applying the time-series analytical technique to the analysis of domestic power demand time series shift and power demand structure. Unit root tests were performed for four series of demands for power, that is, the great demand, business demand, small demand, and lighting demand. Then, the null hypothesis advocating the presence of unit roots in them could not be rejected but, on the other hand, the null hypotheses was discarded in some tests advocating their steady presence. Furthermore, a power demand function was derived and the relationship of power demand with the cointegration component as the income and price factor was examined, when it was found that the power demand function itself gives a long-range, stable relationship. Utilizing this conclusion, an error correction model and vector autoregression model were induced. It was then shown that a short-range disequilibrium in the long-range stable relationship is corrected approximately in 2 years in the case of the great demand, and approximately in 9 months in the case of the lighting demand. Again, a conclusion was reached that the price factor did not involve any causality in the case of the lighting demand. 14 refs., 4 figs., 9 tabs.

  13. Reaction mechanism for the methane-methanol conversion by soluble methane monooxygenase; Metanmonookishigenaze (MMO) ni yoru metan - metanoru henkan no hanno kiko

    Energy Technology Data Exchange (ETDEWEB)

    Yoshizawa, K.; Ota, Y.; Yamabe, T. [Kyoto Univ. (Japan)

    1998-07-10

    Methane monooxygenase (MMO) is a metalloenzyme with binuclear iron atoms as an active center and has ability to oxidize methane which is the most unreactive hydrocarbon. Among recent studies on the reaction mechanism of MMO, the oxygen rebound mechanism, a sort of radical reaction mechanism is critically examined. The two-step concerted mechanism for the hydroxylation of methane and other reaction mechanisms for MMO are discussed. The intermediate of the catalytic cycle of MMO is proposed to consist of two high valiant iron-oxo species based on the experimental result with EXAFS. Fe0{sup +} is known to oxidize methane into methanol in the gaseous state. This reaction has been analyzed by density functional method and methane is found to be activated efficiently through deformation into C{sub 3v} or D{sub 2d} form and combined with iron atom. Reaction mechanism of the methane-methanol conversion is analyzed by the density functional method and shows that the two-step concerted mechanism reproduces the reactivity of soluble MMO. 34 refs., 16 figs.

  14. Formation of the highly oriented clay-film by Langmuir-Blodgett technique; Langnuir-Blodgett ho ni yoru haikosei nendomaku no sakusei

    Energy Technology Data Exchange (ETDEWEB)

    Inukai, K.; Tomura, S.; Suzuki, K.; Miyawaki, R.; Koshino, T. [National Industrial Research Institute of Nagoya, Nagoya (Japan)

    1995-10-30

    A synthetic hydrophobic saponite intercalated by stearyltrimethylammonium cation was spread on the surface of water. The surface pressure (2) was measured against reduced surface area (A). The best reproducible 2-A curve was obtained at the concentration of ten milligrams of hydrophobic saponite dispersed in 100cm{sup 3} of chloroform. The relaxation time of spreading should be longer when the amount of the spreading solution is larger. The maximum surface pressure to keep monolayer film spread on the surface of water was about 20mNm{sup -1} and higher pressure resulted the film collapse. The multilayer clay film was able to build up on a plate at the pressure less than 20mNm{sup -1}. According to the X-ray diffraction and IR analyses, the structure of the multilayer clay film was the same as that of the saponite powder intercalated by stearyltrimethylammonium cation. 5 refs., 8 figs.

  15. Separation and determination of inorganic sulfur species by suppressed ion chromatography. Suppressor gata ion chromatography ni yoru muki iou kagakushu no bunri teiryo

    Energy Technology Data Exchange (ETDEWEB)

    Miura, Y.; Yonemura, Y.; Ko, T. (Tokai Univ., Tokyo (Japan). Faculty of Scinece)

    1991-08-10

    In this study, the effects of eluents of benzoate, phthalate and 1,3,5-benzenetricarboxylate on IEC of sulphate ion, thiocyanic acid ion, thiosulfuric acid ion, dithionic acid ion, trithion acid tetrathion acid ion, pentrathion acid ion and pentathion acid ion using a separation column HPIC-AG4A (5cm). As a result, when the phthalate eluent solution was used, each sulfuric chemical specy could be well eluded and separated, and by using the weak acidic phtalate eluent, detection sensitivity of a sulfuric chemical specy could be enhanced through the action of an ion exchange membrance type suppressor. A calibration curve of each sulfuric chemical specy other than pentation acid ion showed a good linear relationship between concentration and peak height up to 5 {times} 10 {sup {minus} 4} mol/1 respectively. This method was applied to determine sulfuric acid ions and thionic sulfuric acid ions in the hot spring water and satisfactory results were obtained. 15 refs., 5 figs.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-10-27

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

  17. Evaluation of building envelopes from the viewpoint of capability of controlling thermal environment; Onnetsu kankyo chosei noryoku ni yoru kenchiku gaihi no hyoka no kokoromi

    Energy Technology Data Exchange (ETDEWEB)

    Umeda, K.; Ono, S. [Taisei Corp., Tokyo (Japan); Shukuya, M. [Musashi Institute of Technology, Tokyo (Japan)

    1996-10-27

    The ability that architectural space improves the thermal environment in comparison with outdoor environment is called the `capability of controlling thermal environment.` As the value becomes higher, the indoor thermal environment is more improved. In this paper, the controlling capability of six building envelopes with different window systems was compared. The heat transfer in the wall and window system is approximated using a lumped mass model of heat capacity to obtain a heat balance equation and combined with the heat balance equation in indoor air for backward difference. The wall surface temperature and indoor air temperature in a calculation model are then calculated. A radiation absorption coefficient is used for mutual radiation on each wall. In the model, the adjoining room or first- and second-floor rooms were made the same in conditions as the model on the assumption that the one-side lighted office in an RC reference floor is in the non-illumination and non-airconditioning state. In summer, the controlling capability remarkably varies depending on the window system. For the window facing the south, the annual capability is more advanced than in other directions and the indoor thermal environment is improved on the average. 7 refs., 12 figs., 1 tab.

  18. Clearness index in cloudy days estimated with meteorological information by multiple regression analysis; Kisho joho wo riyoshita kaiki bunseki ni yoru dontenbi no seiten shisu no suitei

    Energy Technology Data Exchange (ETDEWEB)

    Nakagawa, S. [Maizuru National College of Technology, Kyoto (Japan); Kenmoku, Y.; Sakakibara, T. [Toyohashi University of Technology, Aichi (Japan); Kawamoto, T. [Shizuoka University, Shizuoka (Japan). Faculty of Engineering

    1996-10-27

    Study is under way for a more accurate solar radiation quantity prediction for the enhancement of solar energy utilization efficiency. Utilizing the technique of roughly estimating the day`s clearness index from forecast weather, the forecast weather (constituted of weather conditions such as `clear,` `cloudy,` etc., and adverbs or adjectives such as `afterward,` `temporary,` and `intermittent`) has been quantified relative to the clearness index. This index is named the `weather index` for the purpose of this article. The error high in rate in the weather index relates to cloudy days, which means a weather index falling in 0.2-0.5. It has also been found that there is a high correlation between the clearness index and the north-south wind direction component. A multiple regression analysis has been carried out, under the circumstances, for the estimation of clearness index from the maximum temperature and the north-south wind direction component. As compared with estimation of the clearness index on the basis only of the weather index, estimation using the weather index and maximum temperature achieves a 3% improvement throughout the year. It has also been learned that estimation by use of the weather index and north-south wind direction component enables a 2% improvement for summer and a 5% or higher improvement for winter. 2 refs., 6 figs., 4 tabs.

  19. Local space air conditioning by covering with a plane jet. Part 2. Theoretical analysis; Kukimaku riyo ni yoru kyokusho kukan kucho. 2. Rironteki kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Yamada, N. [Shinryo Corp., Tokyo (Japan); Kubota, H.; Ijichi, T.; Kurosawa, K.; Yoshida, Y.; Hanaoka, Y. [Muroran Institute of Technology, Hokkaido (Japan)

    1996-05-25

    The local space air conditioning using air curtain was theoretically analyzed. The conditions, where the Coanda effect appeared in the case of local heating, and the temperature characteristics in the eddy generated by the effect were clarified. The force generated by the pressure difference between upper and lower parts of entrained air as well as the buoyancy is applied to the warm plane jet. When the trajectory of the warm jet was theoretically estimated, the critical condition where the jet attaches to the floor was identified as K{sub c}=1.0k{sub p}{sup -0.96} (where K=Ar(H{sub s}/h){sup 3/2}, k{sub p}: center line velocity constant, Ar: Archimedes number, and H{sub s}/h: offset ratio). The critical condition where the attached warm jet goes up was expressed by K>1.39/((2.35+1.25h/H{sub s})k{sub p}{sup 1/2}). The temperature in the eddy region is maintained by the heat, which is supplied with the warm jet collided against the floor due to the Coanda effect and divided into the eddy region. The temperature characteristics within the eddy, which are theoretically derived, were approximated by the following equation, {delta}{theta}{sub c}/{delta}{theta}{sub o}{approx} 0.90(H{sub s}/(k{sub p}h)){sup -1/2} (where {delta}{theta}{sub c} is temperature difference between cavity and room air, and {delta}{theta}{sub o} is temperature difference between outlet and room air). 6 refs., 9 figs.

  20. Optimization of the catalytic converter internal flow by using 3D-CFD; Sanjigen nagare kaiseki ni yoru shokubai converter nai nagare no saitekika

    Energy Technology Data Exchange (ETDEWEB)

    Toi, M.; Sugiura, S. [Toyota Motor Corp., Tokyo (Japan)

    1997-10-01

    By using computational fluid dynamics and statistical quality control method, we investigated the contribution of front and rear catalytic converter cone shape for the pressure loss and the partial flow, also led the optimal terms and the predictional formulations efficiently. According to this, we can investigate the optimal position of the catalytic converter from the planning. 8 figs., 6 tabs.

  1. Study on the inside gas flow visualization of oxygen sensor cover; Kashika ni yoru O2 sensor cover nai no gas nagare hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Hocho, S.; Mitsuishi, Y.; Inagaki, M. [Nippon Soken, Inc., Tokyo (Japan); Hamaguchi, S.; Mizusawa, K. [Toyota Motor Corp., Aichi (Japan)

    1997-10-01

    In order to make clear the difference of the response time between the oxygen sensors with different protection covers, we visualized gas flow inside of sensor covers by means of two experimental methods: One is `Smoke Suspension Method` using liquid paraffin vapor as the smoke. With smoke suspension method, we detected the streamlines inside of the covers. The other is `Color Reaction Method` using the reaction of phenolphthalein and NH3 gas. With color reaction method, we confirmed the streamline inside of the cover and furthermore detected the difference of the response time of each sensor. 3 refs., 7 figs., 1 tab.

  2. Recognition and detection of seismic phases by artificial neural network detector; Jinko neural network ni yoru jishinha no ninshiki to kenshutsu

    Energy Technology Data Exchange (ETDEWEB)

    Yamazaki, K.; Wang, W. [Tokyo Gakugei University, Tokyo (Japan)

    1997-05-27

    Initial parts of P-waves, medium or high in intensity, are detected using an artificial neural network (ANN). The ANN is the generic name given to information processing systems of the non-Neumann type configured to human brain in point of information processing function, and is packaged into computers in the form of software capable of parallel processing, self-organizing, learning, etc. In this paper, a hierarchical ANN-assisted seismic motion recognition system is constructed on the basis of an error reverse propagation algorithm. It is reported here, with a remark that this study wants much more data from tests for the evaluation of the quality of the recognition, that P-wave recognition has been achieved. When this technique is applied to the S-wave, much more real-time information will become available. For the improvement of the system, a number of problems have to be solved, including the establishment of automatic refurbishment through adaptation-and-learning and configuration that incorporates frequency-related matters. It is found that this system is effective in seismic wave phase recognition but that it is not suitable for precision measurement. 7 refs., 4 figs.

  3. Cavity detection based on EM migration of TEM data; TEM ho data no denji migration ni yoru kudo kenshutsu no kokoromi

    Energy Technology Data Exchange (ETDEWEB)

    Shiga, N.; Wada, K.; Tsutsui, T. [Mitsui Mineral Development Engineering Co. Ltd., Tokyo (Japan); Hara, T. [Toda Corp., Tokyo (Japan)

    1997-05-27

    With an objective to discuss applicability of resistivity imaging using electromagnetic migration to detection of underground cavity, an applicability test was carried out on calculation of a numerical model and measurement data. By using the numerical model, a calculation was performed on a hypothetical case that a cubic cavity with sides each at 40 m exists in a homogenous medium of 200 ohm-m, with the cavity top located 20 m below the ground surface. As a result, it was possible to structure in a very short calculation time an image of the cavity which cannot be identified by one-dimensional inverse analysis. In the case of this cavity, a center of the image was structured on its lower face. It was shown that a location to indicate the image must be changed according to difference in the measurement locations. In a test on data measured in an underground cavity in the city of Utsunomiya, Tochigi Prefecture, it was found that the result may vary largely depending on structure of the background necessary for migration. Referring to a result of measurement performed in a location in which no target has been set can provide a good result. 5 refs., 7 figs., 1 tab.

  4. Experiment for buried pipes by stepped FM-CW radar; Step shiki FM-CW radar ni yoru maisetsukan tansa jikken

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, K.; Ito, M. [Kawasaki Geological Engineering, Co. Ltd., Tokyo (Japan); Tanabe, K. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1997-05-27

    The underground radar exploration is adopted to surveys of cavity under the road and buried pipes since the result of high resolution is obtained. However, the explorative depth of the radar is shallow, 2-3m in soil basement, and its applicable field has been limited. The continuous wave radar (FM-CW radar) was devised to get deeper explorative depth, but has been used for the geological structure survey such as the fault survey since it is lower in resolution as compared with the pulse radar. Therefore, to make use of characteristics of the continuous wave radar and enhance resolution in the shallow part, an experiment on buried pipes was conducted for the purpose of assessing and improving the FM-CW radar. In this processing, the wave form treatment used in the reflection method seismic survey was adopted for the radar survey. There are some problems, but it is effective to adopt the same algorithm to that used in the seismic survey to the radar exploration. The explorative depth was discussed from the damping rate of electromagnetic waves and dynamic range of facilities of the experimental site, and 7m was obtained. 5 figs., 1 tab.

  5. Case study of geostructural prospect of a tunnel by using geophysical methods; Butsuri tansa ni yoru tunnel chisan yosoku to jissai

    Energy Technology Data Exchange (ETDEWEB)

    Ueda, H. [Japan Railway Construction Public Corp., Tokyo (Japan); Kawakami, J. [Taisei Construction Corp., Tokyo (Japan); Nagasue, I.; Hiwatashi, S.; Wakuno, M. [Oyo Corp., Tokyo (Japan)

    1997-05-27

    A preliminary survey was carried out by combining elastic wave exploration (using a refraction method) and electrical exploration (using a resistivity imaging method) on a long tunnel planned in a granite distributed area. This paper describes a case of verifying geological condition in the area by using a trial survey well and horizontal boring. This tunnel goes through the Seburi mountainous area on the border of Fukuoka Prefecture and Saga Prefecture for a total distance of 12 km. The refraction method and the resistivity imaging method were selected from the necessity of identifying the weathering condition in natural ground, and distributions of fault crush zones and underground water in a section extending 560 m from the well entrance. As a result of comparing the natural ground condition interpreted from the geophysical survey results with the construction records, the fault was detected as a cracked or deformed section in the part where the resistivity value changes abruptly or where the resistivity is low. The tunnel natural ground classification showed a good correspondence with the elastic wave velocities. The largest flooding section showed a good agreement with the section where the resistivity changes suddenly to a lateral direction. Thus, the geological information interpreted from both surveys presented a good correspondence with the construction records, leading to a judgment that the prediction is possible. 3 refs., 4 figs., 5 tabs.

  6. Three dimensional numerical modeling for investigation of fracture zone filled with water by borehole radar; Borehole radar ni yoru gansui hasaitai kenshutsu no sanjigen suchi modeling

    Energy Technology Data Exchange (ETDEWEB)

    Sanada, Y.; Watanabe, T.; Ashida, Y. [Kyoto University, Kyoto (Japan); Hasegawa, K.; Yabuuchi, S. [Power Reactor and Nuclear Fuel Development Corp., Tokyo (Japan)

    1997-05-27

    Water bearing fracture zones existing in rock mass largely influence the underground water flow and dynamic property of rock mass. The detailed survey of the location and size of water bearing fracture zones is an important task in the fields such as civil engineering, environment and disaster prevention. Electromagnetic waves of high frequency zones can be grasped as a wave phenomenon, and the record obtained in the actual measurement is wave forms of time series. In the exploration using borehole radar, this water bearing fracture zone becomes the reflection surface, and also becomes a factor of damping in the transmitted wave. By examining changes which these give to the observed wave forms, therefore, water bearing fracture zones can be detected. This study made three dimensional numerical modeling using the time domain finite difference method, and obtained the same output as the observed wave form obtained using borehole radar. By using this program and changing each of the parameters such as frequency and resistivity in the homogeneous medium, changes of the wave forms were observed. Further, examples were shown of modeling of detection of water bearing fracture zones. 5 refs., 16 figs., 1 tab.

  7. Archaeological prospecting using electrical resistivity method. Case history of Kaibukiyama ancient tomb; Denki tansaho ni yoru iseki tansa. Kaibukiyama kofun no chosarei

    Energy Technology Data Exchange (ETDEWEB)

    Mizunaga, H.; Ushijima, K.; Kishikawa, H. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1997-05-27

    To grasp the three-dimensional structure of ancient tomb during the archaeological prospecting of Kaibukiyama ancient tomb, various electrical resistivity methods were tried. For the survey, firstly, in order to clarify the electrical resistivity structure of rear circular part of ancient tomb, roughly, mapping was conducted by means of two-electrode method using a multi-channel measuring system. Then, the vertical prospecting was conducted densely with a mesh form having VES intervals of 2 m as a detailed survey by means of Schlumberger method. For the three-dimensional inverse analysis of apparent electrical resistivity data by the two-electrode method, a program with high calculation speed was developed by using algorithm where Jacobian with a homogeneous model is adopted for the Jacobian calculation. As a result of the analysis, an outline of underground 3-D resistivity structure was determined. The resistivity anomaly with high values obtained from the results of 2-D inverse analysis of VES curve by means of Schlumberger method agreed well with the central part of the ancient tomb, which was confirmed during the archaeological survey. 4 refs., 8 figs.

  8. Polarimetric borehole radar measurement near Nojima fault and its application to subsurface crack characterization; Polarimetric borehole radar ni yoru Nojima danso shuhen no chika kiretsu keisoku jikken

    Energy Technology Data Exchange (ETDEWEB)

    Sato, M.; Taniguchi, Y.; Miwa, T.; Niitsuma, H. [Tohoku University, Sendai (Japan); Ikeda, R. [National Research Institute for Disaster Prevention, Tsukuba (Japan); Makino, K. [Geophysical Surveying and Consulting Co. Ltd., Tokyo (Japan)

    1997-05-27

    Practical application of subsurface crack characterization by the borehole radar measurement to which the radar polarimetric method was introduced was attempted to measuring objects for which the borehole radar has not been much used, for example, the inside of low loss rock mass or fracture zone where cracks tightly exist. A system was trially manufactured which makes the radar polarimetric measurement possible in the borehole at a 1000m depth and with a about 10cm diameter, and a field experiment was conducted for realizing the subsurface crack characterization near the Nojima fault. For the measuring experiment by the polarimetric borehole radar, used were Iwaya borehole and Hirabayashi borehole drilled in the north of Awaji-shima, Hyogo-ken. In a comparison of both polarization systems of Hirabayashi borehole, reflected waves at depths of 1038m and 1047m are relatively stronger in both polarization systems than those with the same polarization form and at different depths, whereas reflected waves around a 1017m depth are strong only as to the parallel polarization system. Characteristics of the polarization in this experiment indirectly reflect crack structures. 6 refs., 6 figs., 1 tab.

  9. Computational study on full-wave inversion based on the elastic wave-equation; Dansei hado hoteishiki full wave inversion no model keisan ni yoru kento

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-05-27

    Algorithm is constructed and a program developed for a full-wave inversion (FWI) method utilizing the elastic wave equation in seismic exploration. The FWI method is a method for obtaining a physical property distribution using the whole observed waveforms as the data. It is capable of high resolution which is several times smaller than the wavelength since it can handle such phenomena as wave reflection and dispersion. The method for determining the P-wave velocity structure by use of the acoustic wave equation does not provide information about the S-wave velocity since it does not consider S-waves or converted waves. In an analysis using the elastic wave equation, on the other hand, not only P-wave data but also S-wave data can be utilized. In this report, under such circumstances, an inverse analysis algorithm is constructed on the basis of the elastic wave equation, and a basic program is developed. On the basis of the methods of Mora and of Luo and Schuster, the correction factors for P-wave and S-wave velocities are formulated directly from the elastic wave equation. Computations are performed and the effects of the hypocenter frequency and vibration transmission direction are examined. 6 refs., 8 figs.

  10. Fault detection by Turam TEM survey. Numerical model studies and a case history; TEM ho Turam sokutei haichi ni yoru danso kenshutsu no kokoromi. Model keisan to jisshirei

    Energy Technology Data Exchange (ETDEWEB)

    Wada, K.; Tsutsui, T. [Mitsui Mineral Development Engineering Co. Ltd., Tokyo (Japan); Ito, T. [Chiba Univ., Chiba (Japan). Faculty of Science; Takeuchi, A. [Toyama University, Toyama (Japan). Faculty of Science; He, P. [Power Reactor and Nuclear fuel Development Corp., Tokyo (Japan)

    1997-05-27

    With an objective to detect faults estimated to exist along the Shigesumi valley in the Kamioka mine, discussions were given by using electromagnetic survey, which uses the Turam measurement arrangement based on the TEM method, and three-dimensional model calculations. The Turam measurement arrangement, which installs transmission loop fixedly, is used to identify nature and distribution of electrically conductive objects upon noticing abnormal portions in magnetic fields in the measurement data. In the model calculation, the plate model calculation method and the FDTD method were used, and so was the calculation code TEM3DL. The result revealed that strong topographical influence is seen from steep V-shaped valley existing along the traverse line in the measurement data, but an abnormal resistivity band accompanying remarkable distortion in the curve was detected. According to the result of the model calculation, anomaly detection may be found difficult in locations where a low resistivity band has not grown enough locally. It was possible from these facts to assume a model in which the low resistivity band exists directly below the Shigesumi valley, suggesting existence of faults. 2 refs., 8 figs.

  11. Geoelectrical structure by electrical logs and Schlumberger sounding at the Akinomiya geothermal field, Akita Prefecture; Denki kenso oyobi Schlumberger ho ni yoru Akinomiya chinetsu chiiki no hiteiko kozo

    Energy Technology Data Exchange (ETDEWEB)

    Kajiwara, T.; Takemoto, S.

    1997-05-27

    Based on the electrical logging data of the existed well and Schlumberger sounding data obtained in 1974, a two-dimensional inversion analysis of the specific resistance profile was conducted at the Akinomiya geothermal field, Akita Prefecture. From the electrical logging data, relationships between the geology and the specific resistance were illustrated. The specific resistance values of basement rocks showed more than 100 ohm-m, which were higher than those of the other seams. Intrusive rocks and tuffs in the basement rocks showed locally low values less than 100 ohm-m. Younger volcanic rocks showed low values around 10 ohm-m. As a result of the two-dimensional inversion analysis, the basement rocks could be detected as high specific resistance layers. Accordingly, it was considered that the basement rocks in this field can be detected as high specific resistance layers by analyzing the results of field survey sufficiently. Low specific resistance zones were observed in the shallow depth, which corresponded to the fumarolic gases. There were some layers with remarkably varied specific resistance values, which were considered to be related with alteration. 6 refs., 3 figs.

  12. Fracture inspection by BHTV logging through a vinyl chloride tube; Enbi pipe ga sonyusareta kosei deno BHTV ni yoru kiretsu chosa

    Energy Technology Data Exchange (ETDEWEB)

    Horikawa, H.; Okabe, T.; Takasugi, S. [GERD Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan); Yamauchi, Y.; Imanishi, H. [Osaka Soil Test, Osaka (Japan)

    1997-05-27

    A borehole televiewer (BHTV) logging was conducted to investigate cracks in bored wells. The logging process shoots ultrasonic waves onto bore walls and utilizes reflection waves from the bore walls. If the bores are filled with muddy water, or the ultrasonic waves can pass through even if vinyl chloride tubes have been inserted after excavation, the state of the bore walls can be investigated in principle. Conventional optical scanners are, however, incapable of making this investigation. The BHTV logging can be used for identifying lithofacies from reflection intensities from bore walls (it depends on sound impedance of rocks), not to speak of finding cracks. As a result of making logging upon setting time windows from 105 to 145 {mu} sec in a bored well inserted with a vinyl chloride tube, cracks in the bore wall were identified clearly through the vinyl chloride tube. If the distance between the bore wall and the vinyl chloride tube becomes smaller, setting the time window becomes difficult, making reflection data acquisition more difficult. Impacts of decentering in the vinyl chloride tube on the data and the crack analysis result are small. The reflection intensity has decreased by about half as a result of having the circular vinyl chloride tube inserted. 5 refs., 9 figs., 1 tab.

  13. Laboratory study on streaming potential for exploring underground water flow; Shitsunai jikken ni yoru ryudo den`i wo mochiita mizu michi tansa no kanosei no kento

    Energy Technology Data Exchange (ETDEWEB)

    Sato, H.; Shima, H. [Oyo Corp., Tokyo (Japan)

    1997-05-27

    To investigate a possibility of exploration of underground water flow as well as to grasp the underground fluid flow by measuring streaming potential at the ground surface, some experiments were conducted using a model unit by considering the difference of permeability. For this experimental unit, water is driven by adding head difference between the polyethylene vessel filled with water and the experimental water tank. The size of water tank is 350{times}160 mm with a height of 160 mm. Twenty platinum electrodes are set on the cover of water tank. Toyoura standard sand and Kanto loam were used for the experiments. For the experiments, fluid was injected in various combined models by considering the permeability, to measure the streaming potential. As a result, it was explained by the streaming potential that the fluid flows in a form of laminar flow in the experimental water tank, and that the movement of fluid in the Kanto loam is quite slow. It was also confirmed that the streaming potential method is an effective technique for grasping the movement of fluid. 3 refs., 8 figs.

  14. Development of micro capacitive accelerometer for subsurface microseismic measurement; Micromachining ni yoru chika danseiha kenshutsu no tame no silicon yoryogata kasokudo sensor no seisaku

    Energy Technology Data Exchange (ETDEWEB)

    Nishizawa, M.; Niitsuma, H.; Esashi, M. [Tohoku University, Sendai (Japan). Faculty of Engineering

    1997-05-27

    A silicon capacitive accelerometer was fabricated to detect subsurface elastic waves by using micromachining technology. Characteristics required for it call for capability of detecting acceleration with amplitudes from 0.1 to 1 gal and flat amplitude characteristics in frequency bands of 10 Hz to several kHz. For the purpose of measuring transition phenomena, linear phase characteristics in the required bands must be guaranteed, cross sensitivity must be small, and resistance to water, pressure and heat is demanded. Sensitivity of the sensor is determined finally by noise level in a detection circuit. The sensor`s minimum detection capability was 40 mgal in the case of the distance between a weight and an electrode being 3 {mu}m. This specification value is a value realizable by the current micromachining technology. Dimensions for the weight and other members were decided with the natural frequency to make band width 2 kHz set to 4 kHz. Completion of the product has not been achieved yet, however, because of a problem that the weight gets stuck on the electrode plate in anode bonding in the assembly process. 7 refs., 5 figs., 1 tab.

  15. Landfill deepage water treatment using struvite deposition process and microbiological fluidized bed. Strabite shoseki to biseibutsu ryudosho ni yoru umetatechi shinshutsu mizushori

    Energy Technology Data Exchange (ETDEWEB)

    Harada, H.; Nakajima, S. (Kumamoto University, Kumamoto (Japan). Faculty of Engineering); Tanaka, K. (Government Industrial Research Institute, Nagoya, Nagoya (Japan))

    1990-10-29

    General waste landfill sites in recent years are receiving an increasing amount of ash of waste burned in combustion plants. Phosphorous acid has been used conventionally for the microbiological treatment of seepage water from these sites. The present report proposes to add phosphorous acid to the physical treatment process prior to microbiological treatment. The idea is to recover the added phosphorous acid as deposites, along with ammonia and other material, and use the remaining phosphorous acid as nutrient for the microorganisms so that the ammonia load in the biological treatment process will be reduced. When PO {sub 4}{sup 3 {minus}} is added to landfill seepage water containing Ca {sup 2+} and NH {sub 4}{sup +} in high concentrations, NH {sub 4} CaPO {sub 4} is formed and a high removal rate is achieved. In another test, this NH {sub 4} CaPO {sub 4} formation is performed prior to biological treatment of low BOD/COD seepage water. A 69% removal rate is achieved without the addition of methanol. 7 refs., 9 figs.

  16. Studies on sleep patterns and fatigue due to shift work and their work adaptability. Kotai sagyo ni yoru suimin dotai to hiro oyobi sono sagyo tekiosei no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Matsuoka, N.; Yokota, A. (Univ. of Occupational and Environmental Health, Kitakyushu (Japan). School of Medicine)

    1991-01-01

    Studies were made on sleep patterns and fatigue due to shift work and their work adaptability with respect to the following items: (1) With a nurse work system as the object, a survey of rectum temperature, heart rate and rhythm before and after a midnight shift, and sleep at rising in the morning using the OSA survey method; (2) To analyze actual conditions of cumulative fatigue felt by shift workers and fatigue factors, a survey on shift work history, overtime work time, work patterns, symptoms of cumulative fatigue, and and life satisfaction; (3) A survey on daytime sleep record maintained at working places of guards including those of middle or advanced age, and sleep as affected by a nap; (4) A method of improving complains of circadian rhythm disorders because of variations in sleep and emergence rhythms experienced by shift workers, and discussions of usability of light radiation; and (5) Establishment of a technique to indicate effects of psychological burdens and psychogenic stress on visual functions of shift workers using tensions in focal adjustment. 5 figs., 5 tabs.

  17. On-line temperature control of fluidized bed incinerator using fuzzy algorithm; Fuzzu seigyo donyu ni yoru ryudosogata shokyakuro unten no jidoka

    Energy Technology Data Exchange (ETDEWEB)

    Okayasu, S.; Kuratani, T.; Imai, H. [Ajinomoto Co. Inc., Tokyo (Japan)

    1995-03-15

    Automatic control of incinerators for their stable operation has been desired for the preservation of the environment in the factory. An on-line fuzzy control system has been successfully introduced for temperature control of the fluidized bed of incinerator for industrial wastes. In this case, manual control can be applied to the plant instead of a PID control system, because of the complexity of the waste materials and the large delay in detection of the temperature change in the fluidized bed sand. On the basis of analyzing the dynamic performance of the process and the know-how of skilled operators, membership functions and fuzzy control rules are selected, then determined carefully for the system. Introduction of the system resulted in almost the same performance as manual control. Subsequently the operators are freed from manual operation in the control room for an hour. 6 refs., 5 figs., 4 tabs.

  18. Analysis on the R-R interval time series of automobile long distance drivers; Kosoku doro no chojikan soko ni yoru R-R kankakuji keiretsu kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Moyoshi, M.; Takata, K. [Daido Institute of Technology, Nagoya (Japan); Yokoyama, K. [Nagoya Municipal Women`s College, Nagoya (Japan); Yoshioka, T.; Watanabe, Y. [Toyota National College of Technology, Aichi (Japan)

    1995-04-20

    Analyses were performed on change in living body information as time elapses while driving a car, the differences between automobile drivers and fellow passengers, and between automobile drivers and motorcycle drivers. A comparison on body temperatures in automobile drivers and motorcycle drivers shows sharper changes in the motorcycle drivers. Motorcycles, being different from automobiles, put the drivers exposed to atmosphere during driving, applying larger living body load. Adrenalin increases its concentration when a human is under mental load, so does noradrenalin when under physical load. Both of adrenalin and noradrenalin showed an increasing trend in the afternoon as compared with in the morning. From the comparison with the normal daily life, fellow passengers have also large mental living body load, who were found to have concentration change of nearly two times or more than that in normal conditions. A subject who rode in a car in the first experiment and drove a motorcycle in the second experiment was discovered to have his right hand grasping power decreased remarkably after the second experiment. Fatigue factors unique to motorcycle driving are thought the engine vibration, the hot air, the need of taking balance of the motorcycle attitudes, and stress from noise. 14 refs., 8 figs.

  19. Surface wettability control by titanium dioxide photo-induced reaction. Super-hydrophilic properties; Sanka chitan ni yoru hikari reiki shinsuika gijutsu. Hikari shokubai chosinsuisei

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, T. [The University of Tokyo, Tokyo (Japan). Research Center for Advanced Science and Technology

    1999-05-01

    Hydrophilicity results when the surface of titanium dioxide is reduced for the specified oxygen to be replaced by hydroxyl groups. The ease with which such a structural change occurs is subject to variation between titanium dioxide crystal surfaces, and is dependent greatly on the atmosphere. No hydrophilic trend is observed in an atmosphere of oxygen only without moisture and, in darkness without light, hydrophobicity occurs early. Although the contacta angle titanium dioxide with water with stability is not known, yet it is presumed, on the analogy of the case of strontium titanate, that it is in the range of 20-40 degrees. A hydrophilic trend below the range is attrributed to structural changes. The control of surface wettability is one of the basic tasks to fulfill in various kinds of mechanisms and manufacturing processes. The technology of wettability control using a titanium dioxide coating which is quite durable will be applied not only to functions involving defogging, dripproof, and self-cleaning, but also to the control of heat transmission in the mechanism and to the bonding process. (NEDO)

  20. Surface wettability control by titanium dioxide photo-induced reaction. Super-hydrophilic properties. Sanka chitan ni yoru hikari reiki shinsuika gijutsu. Hikari shokubai chosinsuisei

    Energy Technology Data Exchange (ETDEWEB)

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

    1999-05-01

    Hydrophilicity results when the surface of titanium dioxide is reduced for the specified oxygen to be replaced by hydroxyl groups. The ease with which such a structural change occurs is subject to variation between titanium dioxide crystal surfaces, and is dependent greatly on the atmosphere. No hydrophilic trend is observed in an atmosphere of oxygen only without moisture and, in darkness without light, hydrophobicity occurs early. Although the contacta angle titanium dioxide with water with stability is not known, yet it is presumed, on the analogy of the case of strontium titanate, that it is in the range of 20-40 degrees. A hydrophilic trend below the range is attrributed to structural changes. The control of surface wettability is one of the basic tasks to fulfill in various kinds of mechanisms and manufacturing processes. The technology of wettability control using a titanium dioxide coating which is quite durable will be applied not only to functions involving defogging, dripproof, and self-cleaning, but also to the control of heat transmission in the mechanism and to the bonding process. (NEDO)

  1. Numerical simulation of an excited round jet under helical disturbances by three-dimensional discrete vortex method; Helical kakuran ni yoru reiki enkei funryu no uzuho simulation

    Energy Technology Data Exchange (ETDEWEB)

    Izawa, S.; Kiya, M.; Mochizuki, O. [Hokkaido University, Sapporo (Japan)

    1998-09-25

    The evolution of vortical structure in an impulsively started round jet has been studied numerically by means of a three-dimensional vortex blob method. The viscous diffusion of vorticity is approximated by a core spreading model originally proposed by Leonard (1980). The jet is forced by axisymmetric, helical and multiple disturbances. The multiple disturbances are combinations of two helical disturbances of the same mode rotating in the opposite directions. The multiple disturbances are found to enhance both the generation of small-scale structures and the growth rate of the jet. The small-scale structures have highly organized spatial distributions. The core spreading method is effective in aquiring the core overlapping in regions of high extensional rate of strain. 21 refs., 12 figs.

  2. Control of population of excited nitrogen molecules by mixing hydrogen in low pressure discharge; Chisso jun`antei reiki bunshi mitsudo no quenching ni yoru seigyo no kento

    Energy Technology Data Exchange (ETDEWEB)

    Uematsu, K.; Yumoto, M.; Sakai, T. [Musashi Institute of Technology, Tokyo (Japan)

    1998-06-01

    The authors have studied on surface treatment of PTFE by a low pressure discharge. It is deduced that excited nitrogen molecules contribute to introduce polar components on the surface. To confirm the speculation, we tried to change population of metastable nitrogen N2 (A{sup 3}{Sigma}u{sup +}) by quenching precursor N2 (B{sup 3}{pi}g), with hydrogen molecule. The decrease of relaxation time which indicates a change of excited molecule and measured by emission spectroscopy using a time after glow method was obtained. As a result, the relaxation times of N2 (B{sup 3}{pi}g) and N2 (A{sup 3}{Sigma}u{sup +}) decreased to 55% and 20% respectively, when mixing ratio of hydrogen was 3%. It was also deduced that hydrogen atom may take a part in a quenching process of N2 (A{sup 3}{Sigma}u{sup +}). 14 refs., 11 figs., 1 tab.

  3. Analysis of soots from the combustion of various oils using pyrolysis GC/MS; Netsubunkai GC/MS ho ni yoru yurui no susu no bunseki

    Energy Technology Data Exchange (ETDEWEB)

    Takatsu, M. [Hyogo Prefectural Police Headquarters, Kobe (Japan); Yamamoto, T. [Himeji Inst. of Tech., Hyogo (Japan)

    1998-08-01

    Generally, mineral oils contains alkyl benzenes, fatty group hydrocarbons, polycyclic aromatic hydrocarbons (PAH). In this paper, soot from the combustion of 9 kinds of mineral oils are analyzed by pyrolysis GC/MS, and compared with soot of 7 kinds of fatty group hydrocarbons and 2 kinds of vegetable oils or soot of alkyl benzene which comparison has been carried out before, and the detected components are studied. The more bigger number of the hydrocarbons, the more quantity of the soot of the PAH is detected from the 7 kinds of fatty group hydrocarbons. However, very similar components only has been detected from soot of these fatty group hydrocarbons, olive oils and soybean oils, but no characterized components have been detected out. On the other hand, as for the mineral oils, special oxygen-containing components such as dibenzofuran, nitrogen-containing components such as isoquinoline 1-naphthalencarbonitride etc. have been detected from soot of tar, and special PAH such as biphenyl etc. has been detected from the soot of heavy oils and tars. 4 refs., 3 figs., 1 tab.

  4. Identification of Fusarium oxysporum in the fluid of hydroponic culture using DNA analysis; DNA kaiseki ni yoru suiko saibai yoekichu no horenso ichobyokin

    Energy Technology Data Exchange (ETDEWEB)

    Oyama, K.; Kawabata, T. [Chugoku Electric Power Co. Inc., Hiroshima (Japan)

    1999-09-24

    In the case of circularly using a fluid of the hydroponic culture for crops such as vegetable, the destructive damage is caused when specified harmful germs multiply in the growing crop. therefore, it is necessary to find the germs in question out and deal with them as quickly as possible. In this paper, studies were made on a sure identification technology of F. oxysporum using DNA analysis and the measures to prevent crop damages caused by diseases. The results of the study are reported. (translated by NEDO)

  5. Forward prediction of tunnel face by use of equi-traveltime planes; Tosojimen no riyo ni yoru tunnel kiriha zenpo tansa

    Energy Technology Data Exchange (ETDEWEB)

    Ashida, Y. [Kyoto University, Kyoto (Japan). Faculty of Engineering; Hirano, T. [Nishimatsu Construction Co. Ltd., Tokyo (Japan)

    1996-05-01

    The result is reported herein of a depth transform algorithm application utilizing equi-traveltime planes in reflection seismic exploration for the purpose of knowing the structure configuration in front of the tunnel face in a tunnel excavation process. A vibration producing hole was provided 0.5m above the ground surface while a vibration receiving hole was provided at 1.5m above the ground surface, and the excavated lengths were 1.5m and 0.5m, respectively. There were 24 recording channels, from which inline offset records were taken. The on-site records were subjected to 100-1000Hz band pass filtering. The elastic wave propagation rate in the rock used for depth conversion was set at 400m/s in consideration of the distance and direct wave travel time from the vibration source to the vibration receiving point. As the result of study, weak layers were found in the neighborhood of 230-240m, 260-270m, and 280-290m. This method requires less core memory for calculation and completes calculation in a shorter period of time, which enables a conclusion that it will be effective in grasping the 3-dimensional structure in front of the tunnel face in the working scene. 4 refs., 7 figs.

  6. Development of the electromagnetic tomography system. Field test results using existing equipment; EM tomography system no kaihatsu. Kison sochi ni yoru test sokutei kekka

    Energy Technology Data Exchange (ETDEWEB)

    Kumekawa, Y.; Miura, Y.; Takasugi, S. [Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan); Arai, E. [Metal Mining Agency of Japan, Tokyo (Japan)

    1996-05-01

    With the purpose of developing an electromagnetic tomography system, an observation was carried out with existing equipment combined, and the data was analyzed. The measuring equipment consisted of existing borehole vertical magnetic field sensors as the sensor part, MT method receivers as the receiving device, and existing CSMT method transmitters as the transmitting device. The measuring was performed at the Richmond Field Station which was abundant in existing data and which had a comparatively simple resistivity structure. The borehole vertical magnetic field sensors were lowered inside the borehole, and signal sources were arranged at 10m apart on the traverse line in the direction from northeast to southwest with the borehole as the center. The analysis of the data was made with the use of EM1D by three models, namely, 10 ohm{center_dot}m homogeneous earth model, 100 ohm{center_dot}m homogeneous earth model, and horizontal 7 layer model prepared on the basis of electric logging results; and a comparative examination was made against the measured data. As a result, it was demonstrated that the test measurement agreed very well with the model from the electric logging results and that it was the data reflecting a resistivity structure. 8 refs., 6 figs.

  7. Study of underground structure of Osaka basin and seismic ground motions; Osaka bonchi no chika kozo chosa to Hyogoken nanbu jishin ni yoru jishindo

    Energy Technology Data Exchange (ETDEWEB)

    Iwasaki, Y. [Geo-Research Institute, Osaka, Osaka (Japan)

    1996-05-01

    This paper describes the following matters on the study of underground structure of Osaka Basin and seismic ground motions caused by the Hyogoken-Nanbu Earthquake. Elastic wave investigations using reflections intended for deep structures were carried out in the Hyogo prefectural area and the Osaka bay area by an association of the Geological Survey Institute, Hyogo Prefectural Government, Kobe Municipality and Universities. Reflection investigations were conducted in the Osaka land areas using the east-west traverse line along Yamato River (by the Geological Survey Institute), the south-north traverse line along the Naniwa street in the city of Osaka, and the east-west traverse line at the south end of the Uemachi fault. In addition, investigations using shallow bed reflections were performed in the Osaka bay area by the Hydrographic Office. Results of the active fault investigations using the reflection method may not agree with positions of faults which are estimated topographically. An existing structure model of the Osaka basin (something like of a primary approximation) and the result of inverse analysis on epicenter faults in the Hyogoken-Nanbu Earthquake were used as the base for calculating seismic motions in the Abeno area in Osaka City. The result agreed relatively well with observations if the calculation is intended for waves having cycles longer than about two seconds. 6 figs.

  8. Simulation on breakage of heterogeneous materials caused by detonative loading; Bakugo shogeki ni yoru fukinshitsu zairyo no hakai gensho no simulation

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-05-01

    Investigations were conducted by simulation of breakage of inhomogeneous materials (rock) attributable to detonative loading, which simulation used the Days-2 Code. During the simulation, one-free-face blastings were used for testing a homogeneous structure, horizontal 2-layer structure, and horizontal 3-layer structure. Property values were assigned to the rocks on the assumption that they were sedimentary rocks such as sandstone or mudstone or hard rocks such as granite. As the result, it was found that a detonative loading resulted in shear failure in a sphere near the focus that was followed by radially developed cracks due to tension breakage, that more area is damaged in a soft rock than in a hard rock, that cracks due to breakage are produced by the overlapping of waves directly from the focus and those reflected from the free face in case of one-free-face blastings, that such cracks propagated along the soft rock layer in case there is a soft rock layer in a hard rock, but that breakage does not extend beyond the soft rock layer. 6 refs., 6 figs., 1 tab.

  9. Subsurface geology by shallow seismic reflection survey and microgravity survey in Kobe area; Senso hanshaho danseiha tansa oyobi seimitsu juryoku tansa ni yoru Kobe chiiki no chika chishitsu

    Energy Technology Data Exchange (ETDEWEB)

    Endo, H.; Makino, M.; Murata, Y.; Watanabe, S. [Geological Survey of Japan, Tsukuba (Japan)

    1996-05-01

    This paper reports discussions on subsurface structure of the Kobe area by means of microgravity survey. A Bouguer anomaly distribution graph was obtained (which is close to a near straight line) by measuring the gravity at measurement points with an interval of about 25 m along a traverse line (with a total length of about 1.7 km) in an approximately NNW-SSE direction crossing the downtown of the city of Kobe. Viewing the residuals to a straight line linking the values at both ends of the traverse line revealed that the gradient in the Bouguer anomaly distribution changes as if it is bent at a point near the center of the traverse line as a boundary. Deriving the residuals from fine changes seen in a distribution graph for the residuals made clear that this residual distribution has two discontinuous points. The paper indicates that the bending point in the former case corresponds to a reverse fault in a base bed of a flat land as compared with the result of model calculation on the base structure and gravity distribution. The discontinuous points in the latter case agree with positions of fault distribution derived by a reflection elastic wave survey. 6 refs., 4 figs.

  10. Development of the electromagnetic tomography system. Sensitivity study of anomalous body by model studies; EM tomography system no kaihatsu. Model kaiseki ni yoru ijotai no kando chosa kekka

    Energy Technology Data Exchange (ETDEWEB)

    Kumekawa, Y.; Miura, Y.; Takasugi, S. [Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan); Arai, E. [Metal Mining Agency of Japan, Tokyo (Japan)

    1996-05-01

    An examination was made by a model analysis on sensitivity and the like against a resistive anomalous body, in connection with an electromagnetic tomography system with surface earthquake sources and underground receiver arrangements. A resistivity model was of a three-dimensional structure, and built with a 5 ohm{center_dot}m low resistivity anomalous body assembled in a 100 ohm{center_dot}m homogeneous medium. As a result of the examination, it was shown that the size limitation of an analyzable anomalous body was 50{times}50{times}20m at a frequency of 8 to 10kHz and that a system with high precision in a high frequency range was necessary. The examination of effects under a shallow anomalous body revealed, for example, that the fluctuation of a low frequency response was large compared with a deep anomalous body and that, where a second anomalous body existed under it, the effect also appeared with a surface earthquake source positioned in the opposite side from the anomalous body. The examination of effects under the three dimensional structure revealed, for example, that a remarkable change appeared in the data with the change in the inclined angle of the transmission line against the strike of the anomalous body. 4 refs., 7 figs.

  11. Estimation of subsurface-fracture orientation with the three-component crack-wave measurement; Kiretsuha sanjiku keisoku ni yoru chika kiretsumen no hoko suitei

    Energy Technology Data Exchange (ETDEWEB)

    Nagano, K.; Sato, K. [Muroran Institute of Technology, Hokkaido (Japan); Niitsuma, H. [Tohoku University, Sendai (Japan)

    1996-05-01

    This paper reports experiments carried out to estimate subsurface-fracture orientation with the three-component crack-wave measurement. The experiments were performed by using existing subsurface cracks and two wells in the experimental field. An air gun as a sound source was installed directly above a subsurface crack intersection in one of the wells, and a three-component elastic wave detector was fixed in the vicinity of a subsurface crack intersection in the other well. Crack waves from the sound source were measured in a frequency bandwidth from 150 to 300 Hz. A coherence matrix was constituted relative to triaxial components of vibration in the crack waves; a coherent vector was sought that corresponds to a maximum coherent value of the matrix; and the direction of the longer axis in an ellipse (the direction being perpendicular to the crack face) was approximated in particle motions of the crack waves by using the vector. The normal line direction of the crack face estimated by using the above method was found to agree nearly well with the direction of the minimum crust compression stress measured in the normal line direction of the crack face existed in core samples collected from the wells, and measured at nearly the same position as the subsurface crack. 5 refs., 4 figs.

  12. Fundamental principles of a new EM tool for in-situ resistivity measurement; Denji yudoho ni yoru den`ichi hiteiko sokutei sochi no kento

    Energy Technology Data Exchange (ETDEWEB)

    Noguchi, K.; Aoki, H. [Waseda University, Tokyo (Japan). School of Science and Engineering; Saito, A. [Mitsui Mineral Development Engineering Co. Ltd., Tokyo (Japan)

    1996-05-01

    For the purpose of measuring in-situ resistivity without contact with the rock, a study was made about a measuring device using electromagnetic induction. This measuring device has two concentric transmission loops and a receiving point at the center of the loops, and performs focusing by canceling the primary magnetic field at the receiving point. Using this device, a trial was made to eliminate the influence of surface undulation. In the model calculation, response was calculated after the structure with a heavily undulated ground surface was replaced by a two-layer structure with the first layer provided with a higher resistivity. In the model, the first layer had a resistivity of 10000 Ohm m, and the second layer 1000 Ohm m. Using the ratio between the transmission loop radii as a parameter, relationship with the thickness of the first layer was studied, and it was found that the sensitivity to the second layer resistivity increases when the inner and outer loops are nearer to each other in terms of radius and that this eliminates the influence near the surface layer. A decision needs to fall within a scope assuring good reception because response intensity decreases as the ratio between the transmission loop radii approaches 1. 3 refs., 11 figs.

  13. Inhalation of diesel engine exhaust affects spermatogenesis in growing male rats; Diesel enigne hai gas bakuro ni yoru seicho yusei rat no seishi keisei eno eiky

    Energy Technology Data Exchange (ETDEWEB)

    Kawai, A. [Japan Automobile Research Institute Inc., Tsukuba (Japan)

    2000-04-01

    The paper investigated effects of the exposure of diesel engine exhaust on internal secretion function of genital organs of rats being in growth. Exposure tests were divided into a group of exposing rats to total exhaust gas (TG), a group of exposing rats to particulate-free exhaust gas (PFG), and a group of exposing rats to clean air (comparison group). The tests were carried out for 6 hours/day, for 5 days/week, and for 3 months from the birth. As to the weight at the time of finishing tests, there were no significant differences in weights of testicle and epididymis in each group. About the concentration of male/female sex hormones in serum, the values were significantly higher in TG and PFG groups than the comparison group. The follide stimulating hormone significantly decreased in both exposure groups as compared with the comparison group. The luteinizing hormone significantly decreased in TG group as compared with the comparison group and PFG group. Further, the sperm productivity and testicle hyaluronidase activity significantly decreased in both exhaust exposure groups as compared with the comparison group. It is indicated that the diesel engine exhaust stimulates the secretion of adrenal cortical hormone, reduces emission of gonadotropic hormone, and controls the spermatogenesis of rats. (NEDO)

  14. 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)

  15. Dust explosion accident in IC cleanroom and its prevention by automation; IC seizo clean room deno haiki duct funjin bakuhatsu jiko to jidoka ni yoru saihatsu boshi

    Energy Technology Data Exchange (ETDEWEB)

    Harada, H. [Mitsubishi Corp., Tokyo (Japan)

    1998-09-30

    This paper describes dust explosion accident in IC cleanroom and its prevention measures. A dust explosion occurred during periodical cleaning works of dust deposits in an exhaust duct of plasma CVD system in an IC factory in Toyama Prefecture in August, 1996, which killed one worker. Dust was removed by flowing a large amount of air in the duct from the end of duct. This dust is combustible, and it was well known that a dust explosion occurs when mixed with air. Nitrogen gas is used for the transport of powders with high risk of explosion, such as wheat flour and toner, and the full automatic operation is adopted. The prevention of this accident is to adopt automation based on the principle of powder transportation. A safety detection-type safety system has been proposed so as to remove the dust deposits in the duct automatically as well as to detect the deposition conditions in the duct. Based on the comparison between monitoring data of operation in an exhaust duct and past data, operation conditions of duct can be confirmed to ensure the safety by stopping the CVD system urgently when safety can not be confirmed. 14 refs., 1 fig.

  16. Recent automatic in-line surface inspection methods. Performed by laser optic visual inspections; Hyomen kensa no jidoka / inline ka no doko. Laser ni yoru mokushi kensa

    Energy Technology Data Exchange (ETDEWEB)

    Nishida, K.; Nagasuga, H.; Fujimoto, S

    1998-09-05

    Some kind of nondestructive testing including visual inspections has been applied for all types of weld surface. As for destruction testing, the methods are where the results are obtained by ultrasonic flow testing, eddy current testing and electric signal like that of strain measurement, and visual inspection methods such as radiation transmission testing, magnetic particle testing and penetrant testing. As for testing of weld surface, the automation has not been progressed from the fact that the visual inspection is the main test. On the other hand, distance measurement technology using laser has been used in various fields as a 3 dimensional measurement technology. Further, it is going to be applied for the automation of visual inspection by solving the visual problems such as reflection, scattering, halation and so forth. In this report, some practical examples of laser visual inspections are introduced. Results of applying test system using laser measurement technology for the defects on welding surface confirmed that it is a system with good quantification and memory ability and can be applied for form measurement that is the object for visual inspection. 2 refs., 10 figs.

  17. Application to advanced reinforced precast concrete frame system in conciliation of design and construction; Sekkei to seko no kyocho ni yoru kairyogata ramen purekyasuto koho no jissen

    Energy Technology Data Exchange (ETDEWEB)

    Kobayakawa, S.; Mikame, A.; Kura, M.; Kuroda, Y. [Fujita Corp., Tokyo (Japan)

    1996-05-01

    The reinforced precast concrete (RPC) frame system has been applied frequently in recent years because of its considerable manpower saving at construction sites, its big effect of shortening construction periods and its wide application range in terms of composition technique, but since it has been developed for its practical application aiming at buildings of relatively big scales and simple configurations, there still remain several issues in its application to buildings of small scales and complicated configurations. The building of the health control center which has been built quite recently by the Health Insurance Association of Fuji Heavy Industry in Ota City, Gumma Prefecture is an outcome of the efforts of practical application and execution of the prerequisite of introduction of the latest new techniques and design methods from the very beginning of the entire planning based on the adoption of the RPC method by each division of design, technical development and construction in an united way. In this article, regarding the new techniques and the technical improvements adopted in the construction works, the aims of its introduction and their results are reported. This building has 5 stories above the ground and its building area is 1,078m{sup 2}. The new techniques are the reduction of cross sections of members by using high strength material, the improvement of beam joining methods, etc.. 6 refs., 21 figs., 1 tab.

  18. Rational design for SPAC to counter wash-away by waves and discharge waster; Nami to hosuiryu ni yoru senkutsu taisakuko SPAC no goriteki sekkei

    Energy Technology Data Exchange (ETDEWEB)

    Shimizu, T.; Ikeno, M. [Central Research Institute of Electric Power Industry, Tokyo (Japan); Ujiie, H.; Yamauchi, I. [Tohoku Electric Power Co. Inc., Sendai (Japan)

    1995-03-05

    Investigations were made as to how to design an SPAC (Spreading Armor Coat) for the prevention of wash-away from landfill-protected shores by warm water discharge. In this method, the sandy sea bottom in front of the discharge outlet is dredged and a stone layer is placed therein, and the spread of the layer forms an armor coat. This method is advantageous in that it requires less stone and less dredging than others. In the experiment, a discharge outlet model was used, and data were collected concerning the spread of the stone layer, etc. Findings are to be stated below. The deployment width of the stone layer is to be determined in view of the coverage of the junction slope sharing an angle of repose of 20 degrees with the wash-away width. In case the discharged current drifts under attacks by tall waves coming in obliquely, some allowance needs be added to the SPAC width in consideration of the drifting. A drift may be evaluated by some empirical formulae now available. For the prevention of sand from being drawn out through between the stones after the stone layer deployment, pebbles (1/3 of the stone in diameter) should be mingled with the stones, which will narrow the gap to 5% from 20%, the latter being the percentage with stones only. Pebbles work effectively when they are placed on the dredge-formed slope in the SPAC deployed area. 8 refs., 16 figs., 1 tab.

  19. Improvement in riding comfort of the vehicle by hysteresis loop of leaf spring. Bankan masatsuryoku kaiseki ni yoru leaf spring sha no norigokochi kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Takayama, N.; Numazaki, I. (Isuzu Motors Ltd., Tokyo (Japan)); Yamamoto, E.; Hamamo, T. (NHK Spring Co. Ltd., Yokohama (Japan))

    1993-06-01

    This paper describes improvement in friction characteristics in a vehicle whose suspension consists of leaf-springs. It also explains riding comfort improving measures and their effects by using suspension specifications based on experiments considering inter-leaf friction force, and simulation calculations. As a result of experimenting behavior in each leaf, it was found that an improved Berlin-eye taper leaf-spring has much more gradual inclination in transfer portion in the hysteresis curve than in the conventional upturn-eye springs. This leads to a belief that rise in the diagonal line spring constants at small amplitude is suppressed, thus contributing largely to improving the riding comfort. Inter-leaf friction force at large amplitude is maintained equal to that in the upturn-eye springs if the spring consists of the same number of leaf. The former spring provides good steering stability. As a result of simulations using a simplified model with two degrees of freedom, the Berlin-eye spring had the resonance frequency on the spring seen at small amplitude moved closer to lower frequency side than with the upturn-eye spring. The acceleration levels have decreased in higher frequency zones than the resonance frequency. Sufficient riding comfort improvement was discerned as a result of bench vibration and road tests, and car driving test for feeling evaluation. 5 refs., 14 figs., 1 tab.

  20. Studies on utilization of nitrogen-fixing bacteria for saving energy; Chisso koteikin no katsuyo ni yoru sho energy no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Uozumi, T.; Koyama, R.; Horiuchi, M.; Hidaka, M.; Masaki, H. [The University of Tokyo, Tokyo (Japan); Shigematsu, T.; Inoue, A. [New Energy and Industrial Technology Development Organization, Tokyo, (Japan)

    1997-02-01

    This paper describes analysis and enhancement of nitrogen-fixing gene of rice root bacteria, such as Klebsiella oxytoca, Azospirillum lipoferumn and Sphingomonas paucimobilis, for realizing energy saving through conservation of nitrogenous fertilizers. For K. oxytoca, modified strain R-16 was developed, which can fix nitrogen effectively even in the presence of NH4{sup +}. Nitrogen-fixing ability of A. lipoferumn depends on the activity control by the modification of nitrogen-fixing enzyme as well as on the adjustment of transcription level by the transcription activating gene, nifA. The control gene relating to the above was analyzed by making clones. As a result, a modified strain TAl without the control by NH4{sup +} was developed. The R-16 and TAl strains were inoculated into rice sterile-cultured without nitrogen. Consequently, inoculated strains were settled in the root, which resulted in the increased vegetation weight of plant to two times heavier than that without inoculation. 9 refs.

  1. Separation of polyunsaturated fatty acid esters by flowing liquid membrane with porous partition.; Kakumaku gata ryudo ekimaku ni yoru kodo fuhowa shibosan esuteru no bunri

    Energy Technology Data Exchange (ETDEWEB)

    Yokosawa, R.; Nii, S.; Takahashi, K. [Nagoya Univ., Nagoya (Japan). Depertment of Chemical Engineering; Misawa, Y. [Harima Chemicals, Inc., Osaka (Japan)

    2000-07-10

    A laboratory-constructed flowing liquid membrane apparatus with porous partition (FLM) was applied to the separation of such polyunsaturated fatty acid esters (PUFA-Ets) as eicosapentaenoic acid ethylester (EPA-Et) and docosahexaenoic acid ethylester (DHA-Et) at 293 K. The hydrophilic porous membrane was used as a partition, and 2 M AgNO{sub 3} aqueous solution was used as a membrane liquid. By using dodecane as a feed diluent and m-xylene as a recovery solution, PUFA-Ets were successfully separated from mixture of fatty acid esters. The recovery fraction of PUFA-Ets and the separation degree between DHA-Et and EPA-Et were investigated ; it increases with the velocity of membrane liquid and the flow path length in the module, while it decreased with the velocity of feed and recovery solution. The recovery fraction of DHA-Et reachs 60% with only 8 s-retention time by the continuous operation. The concentrations of the DHA-Et at the outlet of the module were simulated based on the mass transfer model, which gave nearly 85% recovery fraction with 30 s-retention time. These results show that a stable operation, a high recovery and a high recovery and a high throughput are realized by the FLM. (author)

  2. Coordinated control of space-robots using angular velocity norm estimation; Kakusokudo norm suitei to sentan sokudo seigyo ni yoru kyocho seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Taniwaki, S.; Matsunaga, S.; Okami, Y. [Tokyo Inst. of Tech. (Japan)

    1998-09-05

    This paper proposes a coordinated control method based on the norm estimation of the angular velocity of the satellite attitude and the control of the head speed of the manipulator. In this method, the angular velocity norm of the satellite attitude is estimated in real time from the target value of the head speed of the manipulator, i.e. the target payload speed during a coordinated control operation in which the variation of the inertial parameters of a space robot is compensated, and the head speed of the manipulator is controlled by using this estimated value. This enables the variation of the attitude of the satellite body to be within a permissible range. The restriction on the manipulator control speed at this time is alleviated more than that satisfying the Lyapunov stability conditions, so that the operability of the manipulator is improved. The effectiveness of this method was ascertained by a numerical simulation. The attitude variation could be within a permissible range by correcting the head speed of the manipulator so that the estimated value became not higher than a permissible range. 7 refs., 9 figs., 4 tabs.

  3. Potential evaluation of cold heat and hot heat supply by solar heat; Taiyonetsu ni yoru reinetsu onnetsu no kyokyu potential hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Akizawa, A.; Ishida, K.; Kashiwagi, T. [Tokyo Univ. of Agriculture and Technology, Tokyo (Japan)

    1997-01-30

    When the recovered solar heat is supplied to demands such as heating, cooling by absorption refrigerator and hot water supply, the maximum available heating value was determined using a model in which solar heat collector was installed in the residence, to investigate the possibility of alternative demand. In this study, the supply temperatures were 80 {degree}C for cooling, 50 {degree}C for heating, and 50 {degree}C for hot water supply, where a flat plate type heat collector was employed. It was assumed that the heat storage can be conducted for 24 hours. Results obtained are as follows. For detached houses, most of the monthly demand can be supplied due to the actual predominant fine days in each month. For the cold and intermediate periods, it was supposed that monthly demand can be supplied by using excess heating value of fine days in the case of sufficient capacity of heat storage tank. For the model with heat insulating structure, demands except hot water supply can be supplied from solar energy. It was found that the heat insulation greatly contributes to the energy saving. 6 refs., 5 figs., 2 tabs.

  4. Ultra long-term simulation by the integrated model. 1. Framework and energy system module; Togo model ni yoru tanchoki simulation. 1. Flame work to energy system module

    Energy Technology Data Exchange (ETDEWEB)

    Kurosawa, A.; Yagita, H.; Yanagisawa, Y. [Research Inst. of Innovative Technology for the Earth, Kyoto (Japan)

    1997-01-30

    This paper introduces the study on the ultra long-term energy model `GRAPE` with considering global environment and the results of trial calculation. The GRAPE model is to consist of modules of energy system, climate change, change of land use, food demand/supply, macro economy, and environmental impact. This is a model that divides the world into ten regions, gives 1990 as a base year, and enables the ultra long-term simulation. In this time, emission of carbon is calculated as a trial. In the case of constrained quantity of carbon emission, energy supply in the latter half of 21st century is to compose photovoltaic energy, methanol from coal gasification, and biomass energy. In addition, the shear of nuclear energy is to remarkably increase. For the constitution of power generation, IGCC power generation with carbon recovery, wind power generation, photovoltaic power generation, and nuclear power generation are to extend their shears. In the case of constrained concentration of carbon emission, structural change of power generation option is to be delayed compared with the case of constrained quantity of carbon emission. 6 refs., 4 figs.

  5. Development of wall-surface operation robot with the use of multiple hole sucker disc; Tako kyuban ni yoru hekimen sagyo robot no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Takasu, M. [Tokyu Construction Co. Ltd., Tokyo (Japan)

    1997-08-30

    Development effort is being given on a robot to move on a wall while it is sucked onto the wall by vacuum and perform different kinds of works. This paper introduces a robot body and a tile detachment detector. Assuming power supply failure, the robot body is supported supplementarily by a fall preventing device which works from above a building. A ground section is arranged with a control panel to control the robot body, and an air compressor to generate vacuum for sucking the robot onto the wall and to drive air cylinders. Movement of the robot is performed by a parallel link mechanism to determine the amount and direction of the movement by controlling three links that link the suckers A and B. The robot weighs 40 kg. The tile detachment detecting system is consisted of a sound wave sensor with a construction being pressed by an air cylinder by using two ball casters containing vibrators on the signal transmitting and receiving sides. As a result of the experiment, waveforms with different voltage levels were detected on the healthy portion and the detached portion, verifying the possibility of determining existence of detachment. 9 refs., 18 figs., 3 tabs.

  6. Heat storage characteristics of latent microcapsules using hot air bubbles by direct contact heat exchange; Onshitsu kihogun to sennetsu microcapsule tono chokusetsu sesshohku kokan ni yoru chikunetsu tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Nakagawa, K.; Sugiura, T. [Toyohashi University of Technology, Aichi (Japan)

    2000-05-25

    This paper has dealt with the heat storage characteristics of fine microcapsules packed with latent heat storage material in the water layer. The heat storage operation to the latent microcapsules was carried out using hot air bubbles by direct contact heat exchange. The microcapsule consists of n-paraffin as a core latent-heat storage material and melamine resin as a coating substance. The relation of the completion time of latent-heat storage to some parameters was examined experimentally. The non-dimensional correlation equations for the completion time of latent-heat storage process had were derived in terms of the ratio of water layer height to diameter of microcapsule, Reynolds number for air flow, Stefan number and modified Stefan number for absolute humidity of flowing air. (author)

  7. Microbial degradation of crude oil on the sea surface by adding nutrient microcapsules. Eiyo ennaiho microcapsule no tenka ni yoru kaimen deno genyu no biseibutsu bunkai

    Energy Technology Data Exchange (ETDEWEB)

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

    1990-01-10

    Microbial degradation of spilled crude oil on the sea surface has been studied. It was found that the concentration of nutrient was a large rate-determining factor in microbial degradation of oil, consequently microbial degradation can be enhanced by adding nutrient. While, a nutrient microcapsule was developed so as to keep a certain concentration of nutrient on the sea surface, and the biodegradation capacity and the dosing condition were investigated through experiments. In the up-and-down shaking apparats modeled on sea surface, crude oils were degraded by a marine bacteria. The percentages of total oil removal were 18-22% in the sea water, on the other hand, by dose of the nutrient microcapsules they were enhanced to 43-56%. On the biodegradation of 5g of crude oil, the oil removal was amounted roughly to maximum when 116mg of the microcapsule per vessel (11.6% to crude oil) was added 5 times every 4 days, and the dosage effect was not increased even if more nutrient microcapsules were added. 9 refs., 7 figs.

  8. Forging method for consolidating loose structure in steel ingot with v shape dies. V ji gata kanashiki ni yoru kokon no zagu acchaku tanzoho

    Energy Technology Data Exchange (ETDEWEB)

    Isobe, K.; Noguchi, H. (Kawasaki Steel Corp., Tokyo (Japan)); Kato, K. (Tokyo Institute of Technology, Tokyo (Japan). Faculty of Engineering)

    1991-10-01

    A forging method effective for consolidating loose structure in steel ingot is proposed to measure distribution of deformation of round billets in forging with 135{degree} dies, using a model sample made by piling up extremely thin plasticine sheets and a moire technique. From the observation of moire fringes at the time of forging plane deformation, an octagonal forging method with billet rotation of 0-90-135-225{degree} is effective to consolidate the loose structure in the wide area of steel ingot axial region. Moreover, according to the axial distribution of moire stripes of three-dimensional deformation materials with axial direction elongation, it is necessary to axially shift the ingot fittingly in the cogging process. As a result of the cogging experiment using dummy steel ingot plasticine, a {1/4} full die-width shifting method is more effective than a full die-width shifting method in terms of strain distribution in the axial region. Furthermore, it is confirmed that in the forging of the actual steel ingot, loose structure of the steel ingot can be consolidated by the combined use of the octagonal forging method and the {1/4} full die-width shifting method. 13 refs., 10 figs.

  9. Treatment efficiencies of nitrite nitrogen in industrial wastewater by using amido sulfonic acid; Amido ryusan ni yoru kojo haisuichu no ashosansei chisso no shori koka

    Energy Technology Data Exchange (ETDEWEB)

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

    1998-06-10

    Chemical denitrification of NO2-N conducted with amido sulfonic acid was studied to treat NO2-N in both bench and in situ experiments. In bench experiments, following optium conditions for NO2-N removal were obtained. The dosage of amide sulfate was 6.9 times equivalent to NO2-N load, pH value and stirring rate were 2.5 and 50 r.p.m., respectively in the bench reactor, and the period for reaction was more than 60 minutes. Nitrogenous gases like NOx, and N2O, which are causative materials for air pollution and global warming, were not detected in the gas exhaust. In situ experiment was made with wastewater containing NO2-N discharged from a factory and with its operating parameters same as the optimum conditions obtained in the bench experiment. It ran in batch style and was controlled automatically. Results showed that efficient chemical denitrification could be conducted through continuously stirring during treated wastewater discharging, and through covering nitrite sensor to keep it from the nitrogenous gases generated in the reaction. 17 refs., 9 figs., 1 tab.

  10. Increase in information by improvement of measuring method in a multichannel taste sensor; Multichannel aji sensor no sokutei hoho no kairyo ni yoru johoryo no zoka

    Energy Technology Data Exchange (ETDEWEB)

    Ikezaki, H.; Taniguchi, A. [Anritsu Corp., Tokyo (Japan)

    1998-11-01

    We have developed a multichannel taste sensor with lipid membranes which can detect and quantify the basic taste substances in aqueous solution. The aim of the present study is to increase selectivity to adsorptive taste substances (bitter, umami and astringent taste substances) for quantification of taste by improving measuring methods. High selectivity to adsorptive taste substances is obtained by CPA measurement algorithm (CPA: Change of membrane Potential caused by Adsorption). High repeatability is also obtained by developing a cleaning technique of taste sensor. 18 refs., 8 figs., 5 tabs.

  11. Anomalous ring-opening reaction of 4-styrylcoumarin dimer with amines; 4-suchirirukumarin niryotai no amin ni yoru ijo kaikan hanno

    Energy Technology Data Exchange (ETDEWEB)

    Miura, H.; Tanaka, K.; Saito, K.; Takata, T.; Hasegawa, M. [Toin University of Yokohama, Kanagawa (Japan). Department of Functional Chemistry and Technology

    2000-01-10

    Coumarin dimers generally show high reactivity in ring-opening polyaddition reaction with diamine to give a high-molecular-weight polyamide. However, the reaction of anti head-to-tail 4-styrylcoumarin dimer with hexamethylenediamine gave no polyamide at all. It was found that after the first ring-opening reaction by amine, styryl group on cyclobutane ring unexpectedly decreased electrophilicity of carbonyl group and disturbed the second ring opening reaction. After the first ring-opening, IR peaks of carbonyl group in the lactone ring and olefin group in the styryl group, remarkably shifted to the lower wavenumber. Based on the observed IR spectral shifts, unusual stabilization of the second lactone ring was shown. (author)

  12. Method for solving an inverse problem of wing type by using a simple panel method; Kanbenna panel ho ni yoru yokugata gyaku mondai no ichikaiho

    Energy Technology Data Exchange (ETDEWEB)

    Ando, J.; Matsumoto, D.; Maita, S.; Nakatake, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1997-10-01

    This paper describes one method for solving an inverse problem of wing type based on the source and quasi continuous vortex lattice method (SQCM) in designing marine propellers and underwater wings. With the SQCM, vortices and control points are distributed on wing camber according to the QCM, and wing surface is divided into certain number of panels. This is the method to decide vortex intensity and blow-out intensity simultaneously from the condition that vertical speed on the camber and the wing surface is zero, upon having distributed blow-out with certain intensity inside the panel. The method solves the inverse problem with the following process: specific point distribution is so determined that the targeted velocity on the wing surface is satisfied when wing surface pressure distribution and uniform flow velocity are given; and then the panels are so rearranged as in parallel with direction of the flow on the surface of the wing calculated by using these specific points to derive the targeted wing shape. This paper describes the problem solving procedure in great detail. It also introduces examples of numerical calculations. It shows one method for solving the inverse problem in wing type using the SQCM as a simple panel method, whereas its good convergence and stability were verified. Considerations on effects of free surface and expansion of the method into three-dimensional problems will be implemented in the future. 11 refs., 8 figs.

  13. Method for calculating wave resistance in a catamaran by using a simple panel method; Kanbenna panel ho ni yoru katamaran no zoha teiko keisanho

    Energy Technology Data Exchange (ETDEWEB)

    Kataoka, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    1997-10-01

    This paper describes a method for calculating wave resistance in a catamaran by using a simple panel method. Two Wigley models were put side by side to make a catamaran, speccular images were taken on a face symmetrical in the left and right sides, and only one side (the demi-hull) was used as a region to be calculated. Considering blow-out onto the demi-hull surface and still water surface, a model was constituted, in which discrete vortices were distributed on the demi-hull camber to flow the vortices out to an infinitely distance place from the stern. A free surface condition according to double model linearization by Dawson was derived for this model in terms of numerical analysis. The Kutta`s condition is incorporated when SQCM is used concurrently with the Rankine source method, but not incorporated when not used. Calculations were performed on both conditions. Wave resistance was derived by using pressure integral on the hull surface. It is better to consider the Kutta`s condition when the distance between the demi-hulls is small. However, if the distance is large, or speed is great for the boat length resulting in less interference between the demi-hulls, there is very little difference due to the Kutta`s condition. Difference in the wave shapes causes how waves are made to vary. 11 refs., 8 figs.

  14. Improvement on performance in marine diesel engines by use of electric control systems; Denshi seigyo system ni yoru hakuyo diesel kikan no kokoritsuka

    Energy Technology Data Exchange (ETDEWEB)

    Baba, S.; Asada, T.; Suzuki, S.; Kawasaki, T.; Hada, T.; Sawada, K. [Hitachi Zosen Corp., Osaka (Japan)

    1996-01-25

    In recent years, an electronic-controlled system has been widely used for the engine. The authors developed a new system using hydraulic-actuated mechanisms, and applied to the fuel injection control sad the drive control of the suction valve/exhaust valve of the medium-speed four-stroke test engine. Then, it was applied to the fuel injection control system and the exhaust valve drive system of the large sized two stroke test engine, and it was confirmed that it is possible to achieve the same or higher engine performance as compared to the ease with conventional cam system. Moreover, combining `Electronically Controlled Exhaust Valve system` and `Scavenging Controlled Valve system` as a mechanism of a new concept, the authors were able to control freely the scavenging air and exhaust timing of engine. As a result, the effective work of the engine was increased, and the specific fuel oil consumption was improved by 8 g/kwh. 16 figs., 2 tabs.

  15. Comprehensive evaluation of biomass resources using SD method-aided world energy/land utilization model; SD shuho no sekai energy tochi riyo model ni yoru

    Energy Technology Data Exchange (ETDEWEB)

    Yamamoto, H. [Central Research Institute of Electric Power Industry, Tokyo (Japan); Yamaji, K. [The University of Tokyo, Tokyo (Japan)

    1996-02-01

    For the evaluation of the world-wide conflict between the utilization of biomass resources and the restrictions on land utilization, analysis was made using the system dynamics method. In the advanced area, there is scarcely any changes in land utilization, thanks to stable demand for biomass and perfect forestry protection. On the other hand, in the developing area, demand for biomass is increasing and areas of mature forests are decreasing due to imperfect forestry protection. In 2050 and after when the forests will be enjoying the same protection as that in practice in the advanced area, the forest area will stabilize. Mature forests, however, will not stop shrinking, and there will be only 400-million ha of mature forests remaining in 2100. There will be serious food shortage in the developing area because there will be a huge demand for food for livestock. Accordingly, there will be no room at all for the production of energy making crops. Both in advanced and developing areas, the potential is high of cereal residue, livestock`s dung, raw material timber residue, by-products, and refuse energy resources. On the contrary, the potential is low of kitchen refuse, paper, and chemical industry products refuse. 7 refs., 7 figs., 2 tabs.

  16. Synthesis of calcium-deficient by hydroxyapatite-collage composite by the electrolytic deposition method; Denkai sekishutsu ho ni yoru karushiumu kesson hidorokishiapataito-coragen fukugotai no gosei

    Energy Technology Data Exchange (ETDEWEB)

    Okamura, H. [Niigata University, Niigata (Japan). Graduate School Of Science and Technology; Yasuda, M.; Oota, M. [Niigata University, Niigata (Japan)

    1997-07-05

    Hydroxyapatite is known as that it has a good joining property with teeth and bone, and a study on the application to the living body was conducted by using this property. Its application examples were given as the cement used in dentistry, the artificial tooth root, the artificial bone, the bone cement and the artificial joint. However, they were a sinter heated at more than 1000degC, and were put into use by means of reinforcement using a titanium alloy since their mechanical strength was low. In this study, synthesis of calcium-deficient hydroxyapatite (DAp) and collagen composite by the electrolytic deposition method was attempted in order to develop bionic materials, and the correlation of various physical properties of the obtained composite and the electrolytic deposition conditions were investigated. When the electrolytic voltage is more than 22.0V, a single phase of DAp could be obtained. It was clarified that a DAp and collagen composite was synthesized from results of IR and ESR. 16 refs., 5 figs.

  17. Simulation of tandem hydrofoils by finite volume method with moving grid system; Henkei koshi wo tsukatta yugen taisekiho ni yoru tandem suichuyoku no simulation

    Energy Technology Data Exchange (ETDEWEB)

    Kawashima, H. [Ship Research Inst., Tokyo (Japan); Miyata, H. [The University of Tokyo, Tokyo (Japan). Faculty of Engineering

    1996-12-31

    With an objective to clarify possibility of application of time-advancing calculated fluid dynamic (CFD) simulation by using a finite volume method with moving grid system, a simulation was performed on motion of a ship with hydrofoils including the control system therein. The simulation consists of a method that couples a moving grid system technology, an equation of motion, and the control system. Complex interactions between wings and with free surface may be considered automatically by directly deriving fluid force from a flow field by using the CFD. In addition, two-dimensional flows around tandem hydrofoils were calculated to solve the motion problem within a vertical plane. As a result, the following results were obtained: a finite volume method using a dynamic moving grid system method was applied to problems in non-steady tandem hydrofoils to show its usefulness; a method that couples the CFD with the equation of motion was applied to the control problems in the tandem hydrofoils to show possibility of a new technology for simulating motions; and a simulation that considers such wing interference as wave creation, discharged vortices, and associated flows was shown useful to understand characteristics of the tandem hydrofoils. 13 refs., 14 figs.

  18. Numerical prediction with `DMDF` model of pack ice motion in the Okhotsk sea; DMDF model ni yoru Okhotsk kai ryuhyo undo no suchi yosoku

    Energy Technology Data Exchange (ETDEWEB)

    Matsuzawa, T.; Yamaguchi, H.; Suzuki, S.; Kato, H. [The University of Tokyo (Japan); Rheem, C. [The University of Tokyo, Tokyo (Japan). Institute of Industrial Science

    1996-12-31

    A simulation was performed on pack ice motion in the Okhotsk Sea in winter by using the distributed mass/discrete floe (DMDF) method that carries out a dynamic numerical calculation of pack ice motion. Several kinds of cases were compared and calculated. As a result, effectiveness was verified on a DMDF model with boundary conditions which are relatively large in range and complex in nature. At the same time, it was possible to estimate part of the characteristics of pack ice motion in this sea area. The numerical calculation used the floe distribution on February 1, 1994 as the initial condition, and performed calculations on conditions until February 8 giving considerations on meteorological and hydrographic data. As a result, the calculation result showed the same movements as those in the observed ice conditions. If an ocean current is hypothesized steady, the calculation is affected more than necessarily by the ocean current, and it derives a result departed from reality. From these findings, it was elucidated that floe motions are governed mainly by wind; and in making a numerical modeling, a consideration including composition with the ocean current is necessary. Shear stress of wind has its acting direction displaced from the wind direction because of effect of the Corioli`s force. 6 refs., 13 figs., 2 tabs.

  19. Numerical simulation for submerged body fitted with hydrofoil by boundary element method; Kyokai yosoho ni yoru yokutsuki bossuitai mawari no nagare keisan

    Energy Technology Data Exchange (ETDEWEB)

    Masuda, S.; Kasahara, Y.; Ashidate, I. [NKK Corp., Tokyo (Japan)

    1996-12-31

    In a high-speed boat of a type using hydrofoils, lifting force increases in proportion to square of its length, while displacement is proportional to the third power. Therefore, an idea has come up that speed of a large boat may be increased by combining the hydrofoils with a submerged body. In other words, the idea is to levitate a ship by using composite support consisting of buoyancy of the submerged body and lifting force caused by the hydrofoils. Insufficiency of the lifting force may be complemented by the buoyancy of the submerged body which increases in an equivalent rate as that in the displacement. However, combining a submerged body with hydrofoils render a problem that lifting force for hydrofoils decreases because of interactions among the submerged body, hydrofoils, and free surface. Therefore, assuming a model of a submerged body with a length of 85 m cruising at 40 kt, analysis was given on decrease in lifting force for hydrofoils due to interactions between the submerged and lifting body and free surface by using the boundary element method. As a result, it was verified that the lifting force for the hydrofoils decreases as a result of creation of a flow that decreases effective angle of attach of the hydrofoils. It was also made clear that making the submerging depth greater reduces the decrease in the lifting force. 9 refs., 14 figs., 1 tab.

  20. Thermospray ionization mass spectrometric characterization on thermal stability of developing pharmaceutical products; TSP shitsuryo bunsekiho ni yoru kaihatsu iyakuhin no netsuanteisei hyoka no kokoromi

    Energy Technology Data Exchange (ETDEWEB)

    Nishimura, T.; Ishizuka, Y. [Pharmacia and Upjohn Tsukuba Research Lab., Tsukuba (Japan)

    1998-08-01

    In order to ensure quality of pharmaceutical products, the data concerning stability of pharmaceutical products are a kind of important parameters. It is well known that hydrolytic ion peaks caused by heat at initial stage appear in the positions that do not correspond to the molecular ion peaks according to the thermospray ionization LC/MS. It is an obstacle for obtaining high quality LC/MS data, and it is necessary to minimize it by restraining the spray temperature. In this study, using thermospray ionization mass spectrometric analyzer, re-evaluation of an on-line investigation method of pharmaceutical products in solution is studied. And, an example of its application, namely, an application on two kinds of pharmaceutical products, PNU-52047 that is a kind of anticancer drugs (USAN name: Menogaril) and PNU-100766 that is antibiotic material used for mesitylene resistance yellow staphylococcus (MRSA) that is a reason of in hospital inflection, is illustrated. 6 refs., 7 figs.

  1. Stall margin improvement of an axial flow fan with end wall injection and suction; Hekimen fukidashi suidashi ni yoru han'yo jikuryu sofuki no shissoku kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Nishioka, K.; Kuroda, H.; Obata, S.; Chimura, O. [National Defense Academy, Kanagawa (Japan)

    1999-06-25

    The experimental studies are conducted to reveal the mechanism of stall margin improvement of an axial flow fan by injection or suction from the end wall. In case of injection, the largest improvement is obtained by the injection at about 0. 14 {approx} 0 .21 times axial chord length downstream from leading edge. The reason for large improvement is that stall vortex, shed intermittent separation vortex and tip leakage vortex are dissipated by this injection, and also that this blowing suppresses the separation of boundary layer. In case of suction, the largest improvement is found for the suction from the end wall near leading edge. The amplitude of periodic static pressure after stall inception becomes smaller in comparison with injection cases. These effects are increased with the increase of suction flow rate, because the discharge of the vortex occurs more easily. On the other hand, the suction from the upstream of leading edge reduces the axial velocity near rotor tip, and then it induces stall. Also we tried to visualize the tip region flow, The suppression mechanism is discussed based on the visualization. The suppression of stall is successfully photographed. (author)

  2. Life prolongation and cost reduction of steel ladles with improving refractories and their structure; Taikabutsu zaishitsu to kozo kaizen ni yoru shuka taikabutsu no chojumyoka to kosuto teigen

    Energy Technology Data Exchange (ETDEWEB)

    Nakai, Masato; Kasahara, Hajime; Fukutani, Fujio; Imai, Hiroyuki [Nippon Steel Corp., Tokyo (Japan)

    1999-06-01

    Steel Making Plant, Hirohata Iron Works, Nippon Steel Corp. succeeded to reduce the cost of furnace materials by measures described below down to 49% compared to that in 1992. (1) For tuyre bricks, cleanability against oxygen was improved by compacting by vacuum cast forming. (2) For SL bricks, the cost was reduced by applying imported bricks and optimization of the range of use. (3) For alumina-magnesia amorphous refractories for side walls, low expansion and breaking resistance were improved by optimization of magnesia quantity and silica ultra fine powder quantity. (4) For side wall structure, improvement of tie-in between the ground part and the side wall and lining with efficient thickness were carried out. (NEDO)

  3. Improvement of lean combustion characteristics of heavy-hydrocarbon fuels with hydrogen addition; Suiso tenka ni yoru kokyu tanka suisokei nenryo no kihaku nensho no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Sakai, Y. [Saitama Institute of Technology, Saitama (Japan); Ishizuka, S. [Hiroshima University, Hiroshima (Japan). Faculty of Engineering

    1999-09-25

    The Lewis numbers of lean heavy-hydrocarbon fuels are larger than unity, and hence, their flames are prone to extinction in a shear flow, which occurs in a turbulent combustion. Here, propane is used as a representative fuel of heavy-hydrocarbon fuels because the Lewis number of lean propane/air mixtures is larger than unity, and an attempt to improve its combustion characteristics by hydrogen addition has been made. A tubular flame burner is used to evaluate its improvement, since a rotating, stretched vortex flow is established in the burner. The results show that with' hydrogen addition, the fuel concentration, the flame diameter and the flame temperature at extinction are reduced and its combustion characteristics are improved. However, it is found that the effective equivalence ration at extinction cannot become so small as that of lean methane/air mixture, which has a Lewis number less than unity. (author)

  4. Improvement of wells turbine performance by means of 3D guide vanes; Sanjigen annai hane ni yoru wells turbine seino no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Takao, M.; Kim, T.H. [Saga University, Saga (Japan); Setoguchi, T. [Saga University, Saga (Japan). Faculty of Science and Engineering; Inoue, M. [Kyushu University, Fukuoka (Japan). Faculty of Engineering

    2000-02-25

    Performance of a Wells turbine was improved by equipping 3D guide vanes before and behind a rotor. For further improvement, 3D guide vanes have been proposed in this paper. The performance of the Wells turbine with 2D and 3D guide vanes have been investigated experimentally by model testing under steady flow conditions. Then, the running and starting characteristics in irregular ocean waves have been obtained by a computer simulation. As a result, it is found that both of the running and starting characteristics of the Wells turbine with 3D guide vanes are superior to those of the turbine with 2D guide vanes. (author)

  5. Improvements of diesel combustion with pilot and main injections at different piston positions; Piston iso wo koryoshita pilot funsha ni yoru diesel nenshono kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Li, C.; Ogawa, H.; Miyamoto, N. [Hokkaido University, Sapporo (Japan); Sakai, A. [Nissan Motor Co. Ltd., Tokyo (Japan)

    2000-06-25

    The fuel spray distribution in a DI diesel engine with a pilot injection was actively controlled by pilot and main fuel injections at different piston positions to avoid the main fuel injection from hitting the pilot flame. A CFD analysis demonstrated that the movement of the piston with a cavity divided by a central lip along the center of the sidewall effectively separated the cores of the pilot and main fuel sprays. The experiments showed that more smoke was emitted with pilot injection in an ordinary cavity without the central lip while smokeless and low NO{sub x} operation was realized with pilot injection in a cavity divided by a central lip even at heavy loads where ordinary operation without pilot injection emitted smoke so much. The indicated specific energy consumption ISEC was a little bit higher with the pilot injection, mainly because of the reduction in the degree of constant volume combustion. With the advanced pilot injection, ISEC was improved more than that with the retarded pilot injection while the NO{sub x} is a little higher than the retarded pilot injection maintaining still much lower than in ordinary operation. (author)

  6. Application of monolithic lining to tundish and extension of tundish life with improvement of refractories; Tandeisshu futeiseika to taikabutsu kaizen ni yoru jumyo kojo

    Energy Technology Data Exchange (ETDEWEB)

    Mori, Eiichiro; Fujta, Takashi; Tanikawa, Kanji [Kobe Steel Corp., Hyogo (Japan)

    1999-06-01

    As a part of realization of monolithic liming of a tundish lining refractory, a study on 2CC and 3CC tundish monolithic refractories was carried out to improve placing efficiency and extend its life. Main inspection points were set on (1) casting facility specifications and (2) structure and material. A force feeding pump system with a high degree of freedom for placing layout was selected. It was judged preferable than a hopper dolly type ladle repair facility in the degree of freedom for a placing site and facility expenses, though little inferior at maintenance. A force feeding pump is combined with a boom to enable the facility to cast for plural objects. Low expansion and creep properties were given to the refractory by reviewing the addition of the expansive material and the structure was improved by setting anchor blocks at corner parts. The cost of refractories was reduced and labor saving of refractory placing workers was achieved by widely extending the life. (NEDO)

  7. Improvement of D.I. diesel engine combustion using numerical simulation; Chokufun diesel kikan no nensho kaizen shuho. Suchi kaiseki ni yoru torikumi

    Energy Technology Data Exchange (ETDEWEB)

    Minami, T.; Adachi, T.; Isyii, Y. [Isuzu Motors Ltd., Tokyo (Japan)

    1999-04-01

    For the purpose of improving DI diesel engine combustion, it is important to predict air flow of intake and exhaust manifold, intake port flow, combustion chamber swirl and fuel spray combustion. This paper describes the application of numerical simulation to the engines, the analysis of phenomena and a problem of simulation model modification. (author)

  8. Dynamic stability analysis of circular arch subjected to follower forces with small disturbances; Judo kaju wo ukeru enkei arch no yuran ni yoru doteki kyodo to anteisei kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Fukuchi, N.; Okada, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering; Hirano, Y. [Sumitomo Heavy Industries, Ltd., Tokyo (Japan)

    1997-09-04

    This paper describes the deformation and dynamic stability of circular arch subjected to follower forces in a submerged membrane type marine structure reinforced by arch frames. Governing equations for finite deformations of the circular arch subjected to follower forces are introduced using an embedded curve coordinate, which are formulated by applying Galerkin method. In addition, equations of motion due to small disturbances under given condition of loading are introduced. Based on these equations, dynamic stability of the arch is analyzed by means of Runnge-Kutta-Gill method, to clarify the relationship between disturbances and instability regions and the resulting phenomena. Near the boundary regions of stability, both amplitude and cycle of deformation are greatly affected by the amplitude of disturbances. The dynamic instability is governed by the inverse symmetry primary mode with minimum characteristic frequency which is specific for the circular arch. The dynamic stability has high parameter dependency, and the instability regions have a complicated shapes. Although flattened arch has a smaller static critical load, it provides the dynamic stability against the disturbance. 5 refs., 10 figs.

  9. Synthesis and Characterization of Nanostructured Fe-Ni Alloy Whisker

    Institute of Scientific and Technical Information of China (English)

    DONG Guo-jun; WANG Gui-xiang; ZHANG Mi-lin; LI Ru-Min; WANG Jun

    2002-01-01

    The nanocrystalline γ-(Fe,Ni) alloy whiskers have been prepared by chemical reduction of Fe2+ and Ni2+ ions with potassium borohydride under the function of a dispersant agent PE followed by heat treatment at 600℃ under the protection of nitrogen.Conditions, such as quantity of NaOH, concentration of salts, and species of surfactants, of preparation of Fe-Ni alloy have been discussed. X-ray diffraction(XRD), transmission electron microscopy(TEM) and vibrating sample magnetometer(VSM) characterized the synthesized Fe-Ni alloy. Character, capability and use of the materials have been summarized.

  10. Agent, autonomous

    OpenAIRE

    Luciani, Annie

    2007-01-01

    The expression autonomous agents, widely used in virtual reality, computer graphics, artificial intelligence and artificial life, corresponds to the simulation of autonomous creatures, virtual (i.e. totally computed by a program), or embodied in a physical envelope, as done in autonomous robots.

  11. Dissolution de phases minérales MSiO3 ( M Cu, Co, Ni, Zn, Mg) imparfaitement cristallisées au contact de solutions d'agents complexants organiques (porphyrines, amino-acides, asphaltènes)

    Science.gov (United States)

    Bergaya, F.; Perruchot, A.; Van Damme, H.

    1983-05-01

    The kinetic and thermodynamic aspects of the dissolution of ill-organized ("gels") high surface area silicates of general formula MO- SiO2- nH2O( M = Cu, Co, Ni, Zn, Mg) in the presence of the following organic compounds have been investigated: meso-tetraphenylporphyrin (H 2TPP, water insoluble), mesotetra(N-methylpyridyl)porphyrin (H 3TMPyP, water soluble), glycine, and asphaltenes. Kinetic aspects were emphasised in the case of H 2TMPyP. The initial rate of the gross dissolution complexation process followed almost quantitatively (passing from one metal to another) the complexation rate of M2+ ions by H 2TMPyP in a purely homogeneous medium, suggesting that the rate limiting step of the overall process is not related to the chemical or physical processes occurring in the solid particles or at the solid-solution interface, but is simply the complexation, in the solution, of the M2+ ions released by the gel particles. Thermodynamic aspects were emphasised in the case of glycine. The total amount of metal which is extracted at equilibrium can be reasonably well predicted from a simple model which takes into account (i) the stability constant of the metal-glycine complex. (ii) the "solubility product" of the gel particles in water. The results obtained with asphaltones are closer to those obtained with glycine than to those obtained with porphyrins, suggesting that porphyrins represent only a minor population in the complexing functional groups of asphaltenes.

  12. Deposition of electroless Ni-P/Ni-W-P duplex coatings on AZ91D magnesium alloy

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The electroless Ni-P/Ni-W-P duplex coatings were deposited directly on AZ91D magnesium alloy by all acid-sulfate nickel bath.Nickel suitIhate and sodium tungstate were used as metal ion sources and sodium hypophosphite was used as reducing agent.The coating was characterized for its structure,morphologies,microhardness and corrosion properties.The presence of dense and coarse nodules in the duplex coatings Was observed by SEM and EDS.Tungsten content in Ni-P/Ni-W-P alloy is about 0.65%(mass fraction)and the phosphorus content is 8.1 8%(mass fraction).The microhardness of the coatings is 622 VHN.The coating shows good adhesion to the substrate.The results of electrochemical analysis,the porosity and the immersion test show that Ni-P/Ni-W-P duplex coatings possess noble anticorrosion properties to protect the AZ91D magnesium alloy.

  13. Metal-Based Antibacterial and Antifungal Agents: Synthesis, Characterization, and In Vitro Biological Evaluation of Co(II), Cu(II), Ni(II), and Zn(II) Complexes With Amino Acid-Derived Compounds.

    Science.gov (United States)

    Chohan, Zahid H; Arif, M; Akhtar, Muhammad A; Supuran, Claudiu T

    2006-01-01

    A series of antibacterial and antifungal amino acid-derived compounds and their cobalt(II), copper(II), nickel(II), and zinc(II) metal complexes have been synthesized and characterized by their elemental analyses, molar conductances, magnetic moments, and IR, and electronic spectral measurements. Ligands (L(1))-(L(5)) were derived by condensation of beta-diketones with glycine, phenylalanine, valine, and histidine and act as bidentate towards metal ions (cobalt, copper, nickel, and zinc) via the azomethine-N and deprotonated-O of the respective amino acid. The stoichiometric reaction between the metal(II) ion and synthesized ligands in molar ratio of M : L (1 : 1) resulted in the formation of the metal complexes of type [M(L)(H(2)O)(4)]Cl (where M = Co(II), Cu(II), and Zn(II)) and of M : L (1 : 2) of type [M(L)(2)(H(2)O)(2)] (where M = Co(II), Cu(II), Ni(II), and Zn(II)). The magnetic moment data suggested for the complexes to have an octahedral geometry around the central metal atom. The electronic spectral data also supported the same octahedral geometry of the complexes. Elemental analyses and NMR spectral data of the ligands and their metal(II) complexes agree with their proposed structures. The synthesized ligands, along with their metal(II) complexes, were screened for their in vitro antibacterial activity against four Gram-negative (Escherichia coli, Shigella flexeneri, Pseudomonas aeruginosa, and Salmonella typhi) and two Gram-positive (Bacillus subtilis and Staphylococcus aureus) bacterial strains and for in vitro antifungal activity against Trichophyton longifusus, Candida albicans, Aspergillus flavus, Microsporum canis, Fusarium solani, and Candida glaberata. The results of these studies show the metal(II) complexes to be more antibacterial/antifungal against one or more species as compared to the uncomplexed ligands. The brine shrimp bioassay was also carried out to study their in vitro cytotoxic properties. Five compounds, (3), (7), (10), (11), and (22

  14. Metal-Based Antibacterial and Antifungal Agents: Synthesis, Characterization, and In Vitro Biological Evaluation of Co(II, Cu(II, Ni(II, and Zn(II Complexes with Amino Acid-Derived Compounds

    Directory of Open Access Journals (Sweden)

    Zahid H. Chohan

    2006-01-01

    Full Text Available A series of antibacterial and antifungal amino acid-derived compounds and their cobalt(II, copper(II, nickel(II, and zinc(II metal complexes have been synthesized and characterized by their elemental analyses, molar conductances, magnetic moments, and IR, and electronic spectral measurements. Ligands (L1–(L5 were derived by condensation of β-diketones with glycine, phenylalanine, valine, and histidine and act as bidentate towards metal ions (cobalt, copper, nickel, and zinc via the azomethine-N and deprotonated-O of the respective amino acid. The stoichiometric reaction between the metal(II ion and synthesized ligands in molar ratio of M: L (1: 1 resulted in the formation of the metal complexes of type [M(L(H2O4]Cl (where M = Co(II, Cu(II, and Zn(II and of M: L (1: 2 of type [M(L2(H2O2] (where M = Co(II, Cu(II, Ni(II, and Zn(II. The magnetic moment data suggested for the complexes to have an octahedral geometry around the central metal atom. The electronic spectral data also supported the same octahedral geometry of the complexes. Elemental analyses and NMR spectral data of the ligands and their metal(II complexes agree with their proposed structures. The synthesized ligands, along with their metal(II complexes, were screened for their in vitro antibacterial activity against four Gram-negative (Escherichia coli, Shigella flexeneri, Pseudomonas aeruginosa, and Salmonella typhi and two Gram-positive (Bacillus subtilis and Staphylococcus aureus bacterial strains and for in vitro antifungal activity against Trichophyton longifusus, Candida albicans, Aspergillus flavus, Microsporum canis, Fusarium solani, and Candida glaberata. The results of these studies show the metal(II complexes to be more antibacterial/antifungal against one or more species as compared to the uncomplexed ligands. The brine shrimp bioassay was also carried out to study their in vitro cytotoxic properties. Five compounds, (3, (7, (10, (11, and (22, displayed potent cytotoxic

  15. Trading Agents

    CERN Document Server

    Wellman, Michael

    2011-01-01

    Automated trading in electronic markets is one of the most common and consequential applications of autonomous software agents. Design of effective trading strategies requires thorough understanding of how market mechanisms operate, and appreciation of strategic issues that commonly manifest in trading scenarios. Drawing on research in auction theory and artificial intelligence, this book presents core principles of strategic reasoning that apply to market situations. The author illustrates trading strategy choices through examples of concrete market environments, such as eBay, as well as abst

  16. Educational games: training of community healthcare agents on children's respiratory diseases Alimentación del recién nacido después del alta hospitalaria de una Institución Amiga del Niño Jogo educativo: capacitação de agentes comunitários de saúde sobre doenças respiratórias infantis

    Directory of Open Access Journals (Sweden)

    Raquel Dully Andrade

    2008-01-01

    Full Text Available OBJECTIVE: Evaluating the use of an educational game about children's respiratory diseases by community healthcare agents (CHAs in the Family Health Program. METHODS: This is a descriptive, intervention study, with the application of the game to 101 CHAs in Passos-MG. The game was structured with cases of children and families and their respective answer sheets. For evaluation, a test about the topic was applied before and after the intervention. RESULTS: Correct answers in the test increased from 59.5% to 79.3% after participating in the game, which corresponds to a 20% increase. CONCLUSION: The increase in the CHA's knowledge, revealed after the intervention, indicates that the educational game is a satisfactory instrument for healthcare education.OBJETIVO: Evaluar la utilización de un juego educativo, sobre enfermedades respiratorias infantiles, por agentes comunitarios de salud (ACS del Programa de Salud de la Familia. MÉTODOS: Se trata de un estudio descriptivo y de una intervención, con la aplicación del juego en 101 ACS de Passos-MG. El juego fue estructurado en forma de casos de niños y familias y sus respectivas tarjetas de respuestas. Para la evaluación, fue aplicado un test sobre el tema, antes y después de la intervención. RESULTADOS: Las respuestas correctas en el test pasaron de 59,5% a 79,3%, después de haber participado en el juego, logrando un aumento de aproximadamente el 20%. CONCLUSIÓN: La elevación en conocimiento de los ACS, revelada después de la intervención, señala al juego educativo como un instrumento satisfactorio en la educación en salud.OBJETIVO: Avaliar a utilização de um jogo educativo sobre doenças respiratórias infantis por agentes comunitários de saúde (ACS de Programa de Saúde da Família. MÉTODOS: Trata-se de estudo descritivo e de intervenção, com a aplicação do jogo em 101 ACS de Passos-MG. O jogo foi estruturado em forma de casos de crianças e famílias e suas respectivas

  17. Radioprotective Agents

    Directory of Open Access Journals (Sweden)

    Ilker Kelle

    2008-01-01

    Full Text Available Since1949, a great deal of research has been carried out on the radioprotective activity of various chemical substances. Thiol compounds, compounds which contain –SH radical, different classes of pharmacological agents and other compounds such as vitamine C and WR-2721 have been shown to reduce mortality when administered prior to exposure to a lethal dose of radiation. Recently, honey bee venom as well as that of its components melittin and histamine have shown to be valuable in reduction of radiation-induced damage and also provide prophylactic alternative treatment for serious side effects related with radiotherapy. It has been suggested that the radioprotective activity of bee venom components is related with the stimulation of the hematopoetic system.

  18. Developments of DPF systems with mesh laminated structures. Performances of DPF systems which consist of the metal-mesh laminated filter combustion with the alumina-fiber mesh, and the combustion device of trapped diesel particles; Mesh taso kozo no DPF no kaihatsu. Kinzokusen to arumina sen`i mesh ni yoru fukugo filter to filter heiyo heater ni yoru DPF no seino

    Energy Technology Data Exchange (ETDEWEB)

    Kojima, T.; Tange, A.; Matsuda, K. [NHK Spring Co. Ltd., Yokohama (Japan)

    1997-10-01

    For the purpose of continuous run without any maintenance, new DPF (diesel particulate filter)systems laminated by both metal-wire mesh and alumina-fiber mesh alternately, are under the developments. The perfect combustion of trapped diesel particulate can be achieved by a couple of the resistance heating devices inserted into the filter. 5 refs., 7 figs., 3 tabs.

  19. Suppression of inducer stall based on inlet recirculation in a centrifugal impeller. 1st Report. Improvement in stall limit by ring groove arrangement; Enshin haneguruma iriguchi junkanryu ni yoru inducer shissoku no yokusei. 1. kanjoko ni yoru shissoku genkai no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Ueki, H.; Ishida, M.; Sakaguchi, D.; Sun, Z. [Nagasaki University, Nagasaki (Japan). Faculty of Engineering

    2000-07-25

    A ring groove arrangement is proposed to suppress unstable flow or surge in a centrifugal blower. The ring groove arrangement connects the upstream position of impeller inlet and the inducer throat tip through a bypass. The recirculation flow 'vas formed by the pressure difference between the two positions, and the recirculation flow rate was changed by increasing the ring groove widths. The inlet recirculation results in a decrease in the flow rate of unstable flow inception, and an up to 800 improvement in stall limit was obtained by the ring groove arrangement at a small expense of the delivery pressure drop. The improvement of stall limit in the present experiment seems to be mainly due to decrease in flow incidence based on the inlet recirculation flow. Tre flow incidence decreases more as the recirculation flow rate increases, thus resulting in a larger improvement in stall limit. (author)

  20. An agent framework for dynamic agent retraining: Agent academy

    OpenAIRE

    Mitkas, P.; A. Symeonidis; Kechagias, D.; Athanasiadis, I.N.; Laleci, G.; KURT, G.; Kabak, Y.; Acar, A.; Dogac, A.

    2004-01-01

    Agent Academy (AA) aims to develop a multi-agent society that can train new agents for specific or general tasks, while constantly retraining existing agents in a recursive mode. The system is based on collecting information both from the environment and the behaviors of the acting agents and their related successes/failures to generate a body of data, stored in the Agent Use Repository, which is mined by the Data Miner module, in order to generate useful knowledge about the application domai...

  1. Measurements of fiber orientation in two-dimensional fiber suspension flow using image-processing method; Gazo shoriho ni yoru sen`i gan`yutai no nijigen nagare ni okeru sen`i haiko no sokutei

    Energy Technology Data Exchange (ETDEWEB)

    Chono, S.; Tanoue, S.; Iemoto, Y. [Fukui University, Fukui (Japan). Faculty of Engineering

    1998-10-25

    Orientation profiles of fibers in fiber suspension flow between two parallel plates with a square cylinder on the center axis was studied by using the computer image analysis. The orientational order parameter S decreases near the square cylinder because the flow changes its direction and also a wake is developed, while it is large near the channel wall owing to high shear deformation. The preferred angle and S decrease in the downstream vicinity of the square cylinder, and reach fully-developed values at a farther area. S along the channel center axis increases with increasing a fiber concentration and the Reynolds number. The size of a square cylinder has an effect on the fiber orientation near the cylinder. Since a stagnation region and a large wake are developed before and after a cylinder for a viscoelastic fluid, a lower value of S near the cylinder is obtained for the viscoelastic fluid compared to that for a Newtonian fluid. At a downstream area, however, the viscoelastic fluid gives a higher values of S. 21 refs., 14 figs., 1 tab.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-08-01

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

  3. FY1998 report on a survey related to joint utilization of welfare device development data using an international network; 1998 nendo kokusai network ni yoru fukushi kiki kaihatsu data no kyodo riyo ni kansuru chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    A survey was made in relation with joint utilization of welfare device development data using an international network. Developing welfare devices requires data from ergonomic and medical systems, while the cope of the objects is wide, and the kinds are various. For proliferation of welfare devices, system compatibility evaluation including that on using environment is important, including living environments that are different by countries. The present survey has identified how data for aged, handicapped and help-needing persons are accumulated and utilized in research organizations in America and Europe for both of the ergonomic and medical areas. The survey also investigated major academic societies in overseas countries, and collected database and academic network information that support the advanced research and development. At the same time, investigations were also made on organizations and corporations who are moving forward the efficient data utilization. Welfare device and service information providing systems in Japan were investigated to compare them with the trends in other countries. Conceptions and methods were compiled to utilize data internationally and jointly. Database models for device development were considered, and a proposal was made on structuring a research and development supporting database, and the operation method thereof. (NEDO)

  4. Influence of soil-structure interaction on system identification of buildings. Investigation using 2 particle models for identification method; Jiban kozobutsu sogo sayo ga kozobutsu no shindo tokusei suitei ni oyobosu eikyo. Nishitsutenkei model ni yoru suitei shuho no kento

    Energy Technology Data Exchange (ETDEWEB)

    Yamaya, H.; Naito, Y.; Ishibashi, T. [Kajima Corp., Tokyo (Japan)

    1994-10-31

    When dynamic characteristics of structures are identified using data obtained from microtremors or earthquakes and from vibration tests with an exciter, effects of soil-structure interaction on the data together with the effects of disturbances such as wind force and noise make it difficult to identify the characteristics of the structure itself. In this paper, a system having the soil-structure interaction is simplified to adopt a two-particle system composed of one particle system yielded by modelling the superstructure and of another one particle system for base mass. Hereby, a method of estimating characteristics of only the superstructure and those of the soil-structure interaction is investigated. A flow chart is presented for the aforementioned identification, and validity of the flow chart and individual techniques in the flow are studied using a two-particle system model. As a result, there are proposed an identification technique derived from the study of dynamic equations and a regressive identification technique based on numerical experiments. The regressive identification technique is one to identify the systems taking characteristic features of the systems such as peak amplitudes, frequencies, and ratios thereof. 2 refs., 15 figs., 1 tab.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-10-01

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

  6. Bubble motion in liquid nitrogen under a non-uniform electric field in a microgravity environment; Bisho juryoku kankyoka ni okeru ekitai chissochu kiho no denkai ni yoru undo

    Energy Technology Data Exchange (ETDEWEB)

    Suda, Y.; Muto, K.; Sakai, Y. [Hokkaido Univ., Sapporo (Japan); Honma, N. [Hokkaido Electric Power Co., Inc., Sapporo (Japan)

    1997-10-20

    The motion of bubbles in liquid nitrogen (LN2) in a non-uniform electric field are observed in a microgravity environment just after release from the terrestrial gravity. The dynamic behavior of the bubbles is analyzed considering the electro-hydrodynamics and thermodynamics, and is explained consistently by a theory including these forces. The shrink of the bubbles in supercooled LN2 is discussed. 15 refs., 8 figs.

  7. Electromagnetic survey (TEM method) in Teradomari and examination of resistivity structure to be based on near surface information; Niigataken Teradomarimachi ni okeru denji tansa kekka (TEM ho) no doshitsu joho ni yoru kento

    Energy Technology Data Exchange (ETDEWEB)

    Ishikawa, H.; Mitsuhata, Y.; Matsuo, K.; Tanaka, H. [Japan National Oil Corp., Tokyo (Japan). Technology Research Center; Wada, K. [Mitsui Mineral Development Engineering Co. Ltd., Tokyo (Japan)

    1996-10-01

    TEM method was applied to estimate soil structure from resistivity change of underground water saturated stratum featured by slow S wave and fast P wave over 1500m/s. Vertical magnetic field was measured by underlaying a transmission loop of 60m{times}60m around a measuring point in Teradomari, Niigata prefecture, and by installing a magnetic sensor at the measuring point. From comparison of a soil profile with the resistivity profile obtained by TEM data, the former well consisted with the latter. The surface low resistivity stratum corresponded to alluvium from comparison of it with soil and logging data. This alluvium base with fast P wave over 1500m/s satisfied the condition of optimum blasting depth because of a saturated stratum in the surface base. The resistivity structure was related to a saturated stratum. Sand bed was thick at the interface between alluvium low ground and hill area, and from the analytical result, the depth of sand bed showing high resistivity was more shallow than that of the alluvium base, pointing out necessary notice in interpretation. Resistivity survey is promising as simple method for optimum blasting depth. 4 refs., 6 figs., 1 tab.

  8. Outline of investigation on restraint of carbon dioxide generation by green chemistry. 1999.1-1999.3; 1998 nendo green chemistry ni yoru CO2 hassei yokusei ni kakawaru chosa kenkyu chosa hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Investigations were conducted into the above in some leading OECD (Organization for Economic Cooperation and Development) member states. Green chemistry is a new concept in which clean technology, environment-friendly chemistry, and the like are combined, and is a chemical solution for reducing or stopping the use or generation of materials, products, by-products, solvents, reagents, etc., which are dangerous to health and environments, throughout the whole life cycle of chemicals covering the processes of their designing, manufacturing, dumping, and recycling. In this fiscal year, the actual state of the generation of biomass, regarded as representative of reproducible materials, and its feasibility as chemical resources were investigated. In an effort at finding out chemical reactions safer to health and causing less environmental impact, investigations were also conducted into the recent trends of catalysts, novel reactions for organic syntheses, use of supercritical fluids, photocatalysts, biomimetic processes, etc. The development of substitutes for plastic additives was also studied. Since acceptance by the citizenry is quite important for green chemistry to take effect, educating and enlightening activities in the U.S., Britain, France, and Germany were inquired into. (NEDO)

  9. Fiscal 1999 survey report. Part 2. Research study on restraint of carbon dioxide generation by green chemistry; 1999 nendo green chemistry ni yoru CO{sub 2} hassei yokusei ni kakawaru chosa kenkyu. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    In connection with green chemistry, a concept of bringing paradigm shift to chemical technologies as something that makes reduction in environmental load compatible with economic activities; surveys were made this year on the developments of fine chemicals from renewable resources such as cellulose among the cases of developing chemical substances/products to be called 'green chemicals' reducing environmental load; developments of surfactants produced by certain microorganism, plastic additives with reduced pollutant loads, particularly fire retardants and environmentally benign reactant solvents; concept of green chemistry in the development of chlorofluorocarbon-alternatives; and up-to-date technological level concerning a design method of chemical materials and an estimation method for chemical safety using quantum chemistry calculation. In regard to the chemical materials and products intrinsically containing a certain level of risk, R and D should be reinforced and accelerated in the future on the alternative materials/products reducing their toxicity. In this case, along with the importance of discussing compatibility of technological possibility with economical adaptability, sociological study seems to be necessary in incorporating environmental load reduction into economic evaluation. (NEDO)

  10. Adaptability of drowsiness level detection that measures blinks utilizing image processing to changes in the ambient light; Hikari kankyo no henka ni tekiosuru kao gazo shori ni yoru inemuri unten kenchi

    Energy Technology Data Exchange (ETDEWEB)

    Kaneda, M.; Obara, H.; Nasu, T. [Nissan Motor Co. Ltd, Tokyo (Japan)

    1997-10-01

    A drowsiness warning system that measures blinks utilizing image processing technology has a number of issues that need to be resolved. One issue is the adaptability of the system to changes in the ambient light environment in the actual vehicle interior. We have devised image processing software which is robust to changes in the ambient light. The drowsiness detection performance of the system was evaluated in laboratory tests and actual driving tests. It was found that the system can has a positive effect on detecting drowsiness level. 3 refs., 10 figs.

  11. Researches regarding a constructing problem of a PV system. Part 1. Conscious investigation by means of a questionnaire survey; Taiyoko hatsuden system ni okeru kenchikuteki shomondai no kenkyu. 1. Anketo chosa ni yoru ishiki chosa

    Energy Technology Data Exchange (ETDEWEB)

    Nakajima, Y.; Yamazaki, R.; Kuroki, T. [Kogakuin University, Tokyo (Japan)

    1996-10-27

    The installation and introduction of photovoltaic power generation systems (PVS) in buildings are growingly expected in the construction field from now, coupled with the marketing of a solar cell module as a product for a construction material in the form of an external wall or a roof material for example. For this purpose, it is necessary at first to summarize problems that may arise at the time of or after the installation of PVS as a product. This paper examines an opinion poll, degree of recognition, current problems, etc., of PVS as a result of a questionnaire survey given to engineers and architects engaged in the actual construction business. The degree of recognition and interest was very high. Consultation or request for PVS installation was much more than predicted in numbers. Roughly 50% of the respondents reacted positively for the future installation request of PVS and, combined with the respondents who answered to look into the installation tentatively, not less than 90% were of a forward-looking opinion. The 85% of the respondents was not aware of the monitor business system for residential PVS. Further, the survey clearly brought out the importance of cost problems. 1 ref., 11 figs., 3 tabs.

  12. Ab initio MO study on the thermal stability of 1-phenyl-1H-tetrazoles; Hikeikenteki bunshi kidoho ni yoru 1-Ph-1H tetorazoru yudotai no netsu anteisei hyoka ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Ono, Yoshio.; Akutsu, Yoshiaki.; Arai, Mitsuru.; Tamura, Masamitsu. [The University of Tokyo, Tokyo (Japan). School of Engineering; Matsunaga, Takehiro. [National Institute of Materials and Chemical Research, Tsukuba (Japan)

    1999-06-30

    Ab initio MO calculations of 1-phenyl-1H-tetrazoles were carried out, in order to explain a substituent effects on its high thermal stability and to estimate the thermal stability of the other tetrazoles. Similar to 1H-tetrazole, five bonds in the tetrazole ring have intermediate lengths between single and double bond lengths. Phenyl and tetrazole rings are not both on one plane showing no interaction. Three indexes addopted as a measure of thermal stability indicate that the more equal the bond lengths of the ring are and that the bigger the stabilization energy by ring formation is, the more thermally stable they are. It is found out that there is the relationship between the thermal stability and the ring charge. That is, the more negative the ring charge is, the more thrmally stable the tetrazole is. Also, there is a good relationship between the thermal stability and the energy level of orbital of which orbital is an anti bonding type with respect to the N3-N4 bond. The higher the energy level is, the more thermally stable the tetrazole is. (author)

  13. Evaluation of geological conditions by ''drilling logging system''. Yuatsu drill ni yoru sakuko data wo mochiita ganban hyoka oyobi kiriha zenpo chishitsu no yosoku gijutsu ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Aoki, K.; Inaba, T.; Shiogama, Y.; Tezuka, Y. (KajimaCorp., Tokyo (Japan))

    1991-10-31

    In order to predict precisely geological conditions ahead of a face changing with the progress of excavation work of rock caverns such as a tunnel, the drilling logging system was developed which allows to measure, store and analyze drilling data during drilling by hydraulic rotary percussion drilling machines, and the quantitative prediction of geological conditions ahead of a face was tested applying the system to a granite site. As a result, by adopting the drilling energy rate (workload per rock volume of a drilling machine during drilling) as an analytical parameter, the good correlation was found between the drilling energy rate and geological condition (rock property classification) such as a hardness of rocks and quantity of cracks. In addition, the geological condition ahead of a face was probably predictable by estimating the distribution of the drilling energy rate in a wide area by geostatistics mehtod. 5 refs., 9 figs.

  14. On the hydroelastic response of box-shaped floating structure with shallow draft. Tank test with large scale model; Senkitsusui hakogata futai no harochu dansei oto ni tsuite. Ogata mokei ni yoru suiso shiken

    Energy Technology Data Exchange (ETDEWEB)

    Yago, K.; Endo, H. [Ship Research Inst., Tokyo (Japan)

    1996-12-31

    The hydroelastic response test was carried out in waves using an approximately 10m long large model, and the numerical analysis was done by the direct method, for a commercial-size (300m long) box-shaped floating structure with shallow draft. The scale ratio of the model is 1/30.8, and the minimum wave cycle is around 0.7s from wave-making capacity of the tank, which corresponds to 4 to 14s with the commercial-size structure. Elastic displacement and bending strain were measured. The calculated results by the direct method are in good agreement with the observed results. The fluid dynamic mutual interference effects between elements are weak in added mass but strong in damping force, indicating that the range of mutual interference is strongly related to rolling cycle in the range of mutual interference. Wave pressure on the floating structure bottom is high at the upper side of the wave, greatly damping towards the downside of the wave. However, response amplitude of elastic displacement tends to increase at the ends, both in upside and downside of the wave. For the floating structure studied, the 0 to 4th mode components are predominant in longitudinal waves, and the 6th or higher mode components are negligibly low. 21 refs., 15 figs., 2 tabs.

  15. Borehole geophysics for delineating the geological structure in the Sakonishi prospect, the Hida area, Japan; Hida chiiki Sako nishi chiku ni okeru boring ko riyo butsuri tansa ni yoru chishitsu kozo kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Katayama, H.; Hishida, H.; Yoshioka, K. [Metal Mining Agency of Japan, Tokyo (Japan)

    1997-05-27

    In order to discuss effectiveness of physical exploration in the Sakonishi prospect in the Hida area, physical exploration was carried out by utilizing bored wells. This area contains the Kamioka mine, one of the major base metal mines in Japan, where electrical exploration has been attempted several times in the past. No effective results have been obtained, however, because specific resistance contrast between mine beds and base rocks is too small, and the topography is too steep making site workability inferior. As part of the investigations on geological structures over wide areas, electrical logging (specific resistance and natural potential) was performed in fiscal 1995 and 1996 by utilizing the boreholes. Induced polarization logging was also conducted on the same boreholes. A traverse line on the ground with a length of 600 m and boreholes were used to execute specific resistance tomography. Clear extraction was possible on a fault structure which is thought related with limestone distribution and mine bed creation. However, it was not possible to identify upward continuity of zinc ores expected in the exploration. Because of not large a specific resistance contrast between zinc ores and base rocks, it is difficult to find mine bed locations only from the information on the specific resistance. 5 refs., 5 figs., 1 tab.

  16. Estimation of subsurface structures in a Minami Noshiro 3D seismic survey region by seismic-array observations of microtremors; Minami Noshiro sanjigen jishin tansa kuikinai no hyoso kozo ni tsuite. Bido no array kansoku ni yoru suitei

    Energy Technology Data Exchange (ETDEWEB)

    Okada, H.; Ling, S.; Ishikawa, K. [Hokkaido University, Sapporo (Japan); Tsuburaya, Y.; Minegishi, M. [Japan National Oil Corp., Tokyo (Japan). Technology Research Center

    1997-05-27

    Japan National Oil Corporation Technology Research Center has carried out experiments on the three-dimensional seismic survey method which is regarded as an effective means for petroleum exploration. The experiments were conducted at the Minami Noshiro area in Akita Prefecture. Seismometer arrays were developed in radii of 30 to 300 m at seven points in the three-dimensional seismic exploration region to observe microtremors. The purpose is to estimate S-wave velocities from the ground surface to the foundation by using surface waves included in microtremors. Estimation of the surface bed structure is also included in the purpose since this is indispensable in seismic exploration using the reflection method. This paper reports results of the microtremor observations and the estimation on S-wave velocities (microtremor exploration). One or two kinds of arrays with different sizes composed of seven observation points per area were developed to observe microtremors independently. The important point in the result obtained in the present experiments is that a low velocity bed suggesting existence of faults was estimated. It will be necessary to repeat experiments and observations in the future to verify whether this microtremor exploration method has that much of exploration capability. For the time being, however, interest is addressed to considerations on comparison with the result of 3D experiments using the reflection method. 4 refs., 7 figs.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-05-27

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

  18. Development of ELID mirror surface grinding by cast iron bond grinding wheel. Ohkochi memorial technology prize; Chutetsu bond toishi ni yoru denkai inpurosesu doresshingu (ELID) kyomen kensakuho no kaihatsu. Okochi kinen gijutsusho jusho ni yosete

    Energy Technology Data Exchange (ETDEWEB)

    Omori, H.; Takahashi, I. [Institute of Physical and Chemical Research, Tokyo (Japan); Nakagawa, T. [The University of Tokyo, Tokyo (Japan). Institute of Industrial Science; Hagiuda, Y.; Karikome, K. [Tokyo Metropolitan College of Aeronautical Engineering, Tokyo (Japan)

    1997-08-01

    Development was accomplished on the electrolytic in-process dressing (ELID) mirror surface grinding process using a cast iron bonded grinding wheel. This paper describes the history of the development, which may be summarized as follows: a study was begun on powder forging of cutting chips in 1970; a research was started on powder forging of decarburized cast iron powder; developments were made on powder metallurgy of cast irons and cast iron bonded lapping tools in 1980, and cast iron bonded diamond grinding wheels were put on the market; a high-efficiency grinding process using MC and cast iron fiber-bonded grinding wheels were developed in 1985 and the grinding wheels made therefrom were put on the market; and a study was begun on the ELID grinding in 1987, and marketing was started on power supply, grinding liquid and tools for the ELID grinding process in 1990. Discussions on converting raw materials for the powder forging into cutting chips have triggered developing the cast iron bonded grinding wheel. The cast iron bonded diamond grinding wheel improves dressability and sharpness of conventional grinding wheels. The grinding wheel is fabricated by mixing carbonyl iron powder, diamond grinding grains and cast iron powder, pressing the mixture in a die, sintering it at 1140 degC, and assembling and dressing the sinter. The grinding stone can grind high-tech materials. 4 figs.

  19. 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.

  20. Separation of nitrogen heterocyclic compounds contained in coal tar absorption oil fraction by solvent extraction; Yobai chushutsuho ni yoru korutaru kyushuyu ryubun ni fukumareru ganchisso fukuso kanshiki kagobutsu no bunri

    Energy Technology Data Exchange (ETDEWEB)

    Egashira, R.; Nagai, M. [Tokyo Inst. of Tech., Tokyo (Japan). Graduate School of Science and Engineering

    2000-09-01

    The liquid-liquid equilibrium properties (distribution coefficient and separation selectivity) between the feed of coal tar absorption oil fraction and the solvent (aqueous solution of methanol or that of tetrahydrothiophene-1,1-dioxide (sulfolane)) were experimentally measured with changing various conditions (water content in the solvent, etc.) in order to study the performance of operation and of separation. Nitrogen heterocyclic compounds (2,3-benzopyridine (quinoline), 3,4-benzopyridine (isoquinoline), and 2,3-benzopyrrole (benzo[b]pyrrole, indole)) were extracted preferentially to aromatic hydrocarbon (2-methylnaphthalene) in all case. The distribution coefficients of heterocyclic compounds and aromatic hydrocarbon decreased, and the separation selectivities of the heterocyclic compounds relative to the aromatic hydrocarbon increased with the water content in the extract. The aqueous solution of methanol was superior as a solvent to that of sulfolane in terms of both operation and separation performances. The above distribution coefficients were used to carry out the simple process simulation of extraction operation where the solvent was the aqueous solution of methanol. The multi-stage structure of equilibrium stage and counter-current contact between the feed and solvent improved the concentrations and yield of the heterocyclic compounds in the product that indicated process feasibility of the separation technique. (author)

  1. Estimation of shallow ground structure using short-period microtremors array observation. Results in Morioka area; Tanshuki bido no array kansoku ni yoru senbu chika kozo no suitei. Moriokashiiki ni okeru kekka

    Energy Technology Data Exchange (ETDEWEB)

    Yamamoto, H.; Obuchi, T.; Saito, T.; Iwamoto, K. [Iwate University, Iwate (Japan). Faculty of Engineering; Yoshida, Y. [OYO Corp., Tokyo (Japan)

    1996-05-01

    The velocity structure in the shallow ground structure was evaluated by observing microtremors of 1-10Hz in the Morioka City area. Plural wave sections free of vehicle noises or the like were selected out of the collected microtremor records, and the Fourier spectrum and coherence were calculated. Records sufficiently supporting the correlation between seismographs were chosen for the analysis. The phase velocity was calculated for each observation spot from plural array records by use of the F-K spectrum. The underground velocity structure was estimated by the inversion process using the matrix method. In this method, an early model was built on the basis of the observed phase velocity and the optimum underground velocity structure was determined by alternately performing two inversion processes: one for the case wherein the S-wave velocity is the sole parameter and the other for the case wherein the layer thickness is the sole parameter. As the result, a shallow underground velocity structure, which has good agreement with the available boring data in the Morioka City area, was successfully estimated, verifying the validity of this method. 4 refs., 7 figs.

  2. Fiscal 1997 survey report on the project on energy conservation by effectively using building energy in Indonesia; 1997 nendo chosa hokokusho (Indonesia ni okeru biru energy yuko riyo ni yoru sho energy ka project chosa)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    As an energy conservation method for a model building, the following eight methods were selected and trially calculated of the effects. 1) adoption of high efficient illumination apparatus, 2) introduction of an illuminance control system, 3) cooling water secondary pump with invertor, 4) ventilation control for parking lots, 5) heightening of the established temperature, 6) improvement of the 24-hour run chiller, 7) elevator with invertor, and 8) introduction of the photovoltaic power generation. As a result, it was found out that energy was totally reduced by about 3,837.4 MWh/yr or 25.6%. If viewed from the amount of reduction in greenhouse gas, the amount of CO2 emitted from office buildings, approximately 0.22 million t-C/yr, decreases to approximately 0.16 million t-C/yr. Further, approximately 0.93 million t-C/yr, the amount of CO2 emitted from commercial use facilities such as office buildings, department stores and hotels is reduced to about 0.69 million t-C/yr, thanks to the effect of the project on energy saving buildings, which made a CO2 reduction by approximately 0.24 million t-C/yr possible. Validity of the project on energy conservation in Indonesia was confirmed. 2 refs., 55 figs., 38 tabs.

  3. Effect of gelatin hardening on hydrogen visualization in steels by hydrogen microprint technique; Micro print ho ni yoru kochu suiso no kashika gijutsu ni oyobosu gelatin komaku shori no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Kuramoto, S.; Ichitani, K.; Nagao, A.; Kanno, M. [The University of Tokyo, Tokyo (Japan)

    2000-01-01

    Hydrogen microprint technique is a simple and powerful method to visualize hydrogen behavior in metallic materials by using redox reaction between hydrogen and silver bromide. Polished surface of specimens is covered with nuclear emulsion, and silver particles left on the surface after fixing represent sites of hydrogen emission. If silver particles are unstable during fixing and leave original sites of the reaction with hydrogen, hydrogen behavior can not be accurately analyzed. For the purpose of optimizing the experimental procedure to study hydrogen behavior in steels properly, effects of gelatin hardening on the stability of silver particles were examined in the present study by changing type of photographic fixer and pre-fixing treatment. Fixing specimens with hardening fixer was effective to prevent silver particles from moving to other locations during fixing. Applying hardening fixer, however, made it difficult to observe silver particles that existed in a thick gelatin layer. The optimum procedure was fixing specimens with non-hardening fixer after gelatin hardening by formalin. With this procedure, silver particles were stable during fixing and there was no difficulty in observing silver particles that represented points of hydrogen emission.

  4. Estimation of ingestion rate as nitrogen and factors creating its seasonal changes in Ruditapes philippinarum population in Banzu Tidal Flat, Tokyo Bay; Tokyowan Banzu higata no asari ni yoru chisso sesshuryo no suitei to sono kisetsu hendo ni kakawaru yoin

    Energy Technology Data Exchange (ETDEWEB)

    Isono, R. [Marine Ecology Research Institute, Chiba (Japan)

    1998-11-10

    The above-named clam is evaluated for water purifying capability. Experiments are conducted, and relations between the clam shell length and filtered water amount and the need of correction of the amount for temperature and salinity are clarified. Using existing materials, data are put in order about temperature, salinity, concentration levels of suspended nitrogen and chlorophyl, and changes in clam density. Findings are outlined below. The amounts of nitrogen that the clam group ingests per 1m{sup 2} of the tidal flat in August, when the group is the largest, and February, when the group is the smallest, are 300 and 19 mg-N/m{sup -2}h{sup -1}, respectively. Without pseudofeces production, the amount of food filtered by the clam is equal to the amount of food ingested. The filtered amount is estimated to be equivalent to 9-94% of the molluscan portion, but the figures may result from overestimation. The amount to be ingested is subject to seasonal changes, greatly dependent on temperature and suspended nitrogen concentration, but a little on salinity. A precisely planned temperature measurement will be required since the temperature change in the actual habitat of the clam is different from that in the tidal flat. Temperature is lower under the silt surface than on the silt surface. Troubles due to the exposure of the clam to high temperature on the ebb tide will be alleviated if the clam is deeper in the sand. 24 refs., 6 figs., 3 tabs.

  5. 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)

  6. Calculation of oil production performance of the large giant oil fields in the world: based upon oil fields depletion model; Yuden gentai model ni yoru sekai no ogata kyodai yuden no seisan kyodo ni kansuru ichishisan

    Energy Technology Data Exchange (ETDEWEB)

    Nomoto, S. [Japan Oil Development Co. Ltd., Tokyo (Japan); Fujita, K. [The University of Tokyo, Tokyo (Japan)

    1997-05-01

    Data for large giant oil fields with minable reserves of one billion barrels or more were accumulated to structure a new oil field depletion model and estimate production in each oil field. As a result of analyzing events recognized in large giant oil fields, necessity was made clear to correct the conventional oil depletion model. The newly proposed model changes definitions on the depletion period of time, depletion rate, build-up production (during a time period in which production rate increases) and production in a plateau (a time period in which production becomes constant). Two hundred and twenty-five large giant oil fields were classified into those in a depletion period, an initial development phase, and a plateau period. The following findings were obtained as a result of trial calculations using the new model: under an assumption of demand growth rate of 1.5%, oil field groups in the initial development phase will reach the plateau production in the year 2002, and oil fields in the depletion period will continue production decline, hence the production amount after that year will slow down. Because the oil field groups in the plateau period will shift into decline in 2014, the overall production will decrease. The year 2014 is about ten years later than the estimation given recently by Campbell. Undiscovered resources are outside these discussions. 11 refs., 9 figs., 2 tabs.

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

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

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

  8. Development of a new electroplating process for Ni-W alloy deposits

    DEFF Research Database (Denmark)

    Mizushima, Io; Tang, Peter Torben; Hansen, Hans Nørgaard;

    2005-01-01

    In the present work, the effect of the complexing agents citrate, glycine and triethanolamine (TEA) on the electrodeposition of Ni-W layers from electrolytes based on NiSO4 and Na2WO4, is investigated. The investigations include measurement of the current efficiencies, determination of the tungst...

  9. Development of a new electrolyte for deposition of Ni-W alloys

    DEFF Research Database (Denmark)

    Mizushima, Io; Tang, Peter Torben; Hansen, Hans Nørgaard;

    2005-01-01

    In the present work, the effect of the complexing agents citrate, glycine and triethanolamine (TEA) on the electrodeposition of Ni-W layers from electrolytes based on NiSO4 and Na2WO4, is investigated. The investigations include measurement of the current efficiencies, determination of the tungst...

  10. Percepciones en salud bucal de los niños y niñas

    OpenAIRE

    Catalina González-Penagos, Colombia.; Melissa Cano-Gómez, Colombia.; Edwin J. Meneses-Gómez, Colombia.; Annie M. Viva res-Builes, Colombia.

    2015-01-01

    (analítico): Identificamos las necesidades de salud bucal de los niños y niñas de 2 a 5 años del programa Buen Comienzo-Fantasías de las Américas, desde la percepción de las agentes educativas en la ciudad de Medellín, en el año 2013. Realizamos un estudio cualitativo, con enfoque histórico hermenéutico; la población de estudio correspondió a 65 agentes educativas. Los resultados preliminares reflejan necesidades relacionadas con el acceso y oportunidad de atención odontológica, la deficienci...

  11. Agent Chameleons: Virtual Agents Real Intelligence

    OpenAIRE

    O'Hare, Gregory; Duffy, Brian; Schoen-Phelan, Bianca; Martin, Alan; Bradley, John

    2003-01-01

    Agent Chameleons provides virtual agents powered by real intelligence, delivering next generation autonomic entities that can seamlessly migrate, mutate and evolve on their journey between and within physical and digital information spaces.

  12. OpenNI cookbook

    CERN Document Server

    Falahati, Soroush

    2013-01-01

    This is a Cookbook with plenty of practical recipes enriched with explained code and relevant screenshots to ease your learning curve. If you are a beginner or a professional in NIUI and want to write serious applications or games, then this book is for you. Even OpenNI 1 and OpenNI 1.x programmers who want to move to new versions of OpenNI can use this book as a starting point. This book uses C++ as the primary language but there are some examples in C# and Java too, so you need to have about a basic working knowledge of C or C++ for most cases.

  13. Magnetic Properties of Ni Nanoparticles and Ni(C) Nanocapsules

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Structure and magnetic properties of Ni nanoparticles and Ni(C) nanocapsules were studied. The carbon atoms hardly affect the lattice of Ni to form Ni-C solid solution or nickel carbides. The large thermal irreversibility in zerofield-cooled and zero-field magnetization curves indicates magnetic blocking with a wide energy barrier. Saturation magnetization, remanent magnetization and coercivity of Ni(C) nanocapsules decrease with increasing temperature.

  14. Interacting agents in finance

    NARCIS (Netherlands)

    C. Hommes

    2008-01-01

    Interacting agents in finance represent a behavioural, agent-based approach in which financial markets are viewed as complex adaptive systems consisting of many boundedly rational agents interacting through simple heterogeneous investment strategies, constantly adapting their behaviour in response t

  15. SYNTHESIS OF NiO NANOPARTICLES IN ETHYLENE GLYCOL

    Institute of Scientific and Technical Information of China (English)

    Desheng Ai; Xiaming Dai; Qingfeng Li; Changsheng Deng; Shinhoo Kang

    2004-01-01

    NiO nanoparticles with well-dispersed property were prepared via a wet chemical method in ethylene glycol (EG) without soluble polymer as a protective agent. The mechanism of chemical process was proposed based on color change during the experiment. The dispersion function of EG was discussed.

  16. Electrodeposition of Ni-Cr alloy on aluminum substrate

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Ni-Cr alloys with mass fraction of 1.4%-23.9 %Cr, 76.1%-98.6 % Ni, and hardness of 70.5-80.5HR were electrodeposited on aluminium substrate from the trivalent chromium sulphate-chloride solution using citric acid as complexing agent. The aluminium was pretreated by means of degreasing and eroding, polishing and twice chemicai immersion of zinc. The effects of electrodeposition parameters such as current density, temperature, pH value and bath concentration on the composition and hardness of deposits were investigated. The results show that the Cr content increases with the increase of current density and the decrease of temperature, and that it increases with the increase of pH value to a maximum and then decreases. The increase of Cr content leads to the increase of hardness of the Ni-Cr layers. The deposits with high Cr content are of good corrosion resistance. Good adherence of Ni-Cr deposits to aluminium substrate is obtained. The Ni-Cr alloys are the Ni-Cr solid solution with fcc crystalline structure. The Ni-Cr alloy deposits are fine, bright and smooth and compact.

  17. Enhanced Activity of Supported Ni Catalysts Promoted by Pt for Rapid Reduction of Aromatic Nitro Compounds

    Directory of Open Access Journals (Sweden)

    Huishan Shang

    2016-06-01

    Full Text Available To improve the activities of non-noble metal catalysts is highly desirable and valuable to the reduced use of noble metal resources. In this work, the supported nickel (Ni and nickel-platinum (NiPt nanocatalysts were derived from a layered double hydroxide/carbon composite precursor. The catalysts were characterized and the role of Pt was analysed using X-ray diffraction (XRD, high-resolution transmission electron microscopy (HRTEM, energy dispersive X-ray spectroscopy (EDS mapping, and X-ray photoelectron spectroscopy (XPS techniques. The Ni2+ was reduced to metallic Ni0 via a self-reduction way utilizing the carbon as a reducing agent. The average sizes of the Ni particles in the NiPt catalysts were smaller than that in the supported Ni catalyst. The electronic structure of Ni was affected by the incorporation of Pt. The optimal NiPt catalysts exhibited remarkably improved activity toward the reduction of nitrophenol, which has an apparent rate constant (Ka of 18.82 × 10−3 s−1, 6.2 times larger than that of Ni catalyst and also larger than most of the reported values of noble-metal and bimetallic catalysts. The enhanced activity could be ascribed to the modification to the electronic structure of Ni by Pt and the effect of exposed crystal planes.

  18. One-pot preparation of Ni-graphene hybrids with enhanced catalytic performance

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Guiqiang, E-mail: chengphnu@126.com [College of Information Science and Engineering, Hebei North University, Zhangjiakou 075000, Hebei (China); Wang, Fengli [College of Information Science and Engineering, Hebei North University, Zhangjiakou 075000, Hebei (China); Liu, Fei [Department of Electrical Engineering, Zhangjiakou Vocational College of Technology, Zhangjiakou 075000, Hebei (China); Zhang, Xiao, E-mail: Zhangxiao83690@163.com [College of Information Science and Engineering, Hebei North University, Zhangjiakou 075000, Hebei (China)

    2014-10-15

    Highlights: • Ni-rGO hybrids were synthesized by a microwave-assisted method. • NaBH4 was used as a reducing agent to fabricate Ni-rGO hybrids. • Ni-rGO was used as catalyst for the reduction of p-nitrophenol. • Ni-rGO showed higher catalytic ability than pure Ni nanoparticles. • Ni-rGO showed good recyclability and stability. - Abstract: A facile one-pot method was developed to synthesize magnetic nickel nanoparticles (Ni NPs) decorated on reduced graphene oxide (rGO) with NaHB{sub 4} as a reductant under microwave irradiation. The morphologies and structures of the Ni-rGO hybrids were investigated by electron microscopy, thermal gravimetric analysis, X-ray photoelectron spectroscopy, X-ray diffraction, Raman spectroscopy and magnetic measurements. The results showed that Ni-rGO hybrids composed of the well-dispersed Ni NPs with an average diameter of 12 nm were successfully prepared. To demonstrate one potential application, the catalytic ability of Ni-rGO was evaluated and it was found that Ni-rGO showed much enhanced catalytic ability, good recyclability and stability toward the catalytic reduction of p-nitrophenol to p-aminophenol. The excellent catalytic activity of Ni-rGO hybrids was due possibly to the synergistic effect of Ni NPs and rGO, including the uniform distribution of Ni NPs onto rGO, enhanced electrons separation and transport, as well as the fast adsorption of p-nitrophenol by rGO.

  19. Ni-Co laterite deposits

    Science.gov (United States)

    Marsh, Erin E.; Anderson, Eric D.

    2011-01-01

    Nickel-cobalt (Ni-Co) laterite deposits are an important source of nickel (Ni). Currently, there is a decline in magmatic Ni-bearing sulfide lode deposit resources. New efforts to develop an alternative source of Ni, particularly with improved metallurgy processes, make the Ni-Co laterites an important exploration target in anticipation of the future demand for Ni. This deposit model provides a general description of the geology and mineralogy of Ni-Co laterite deposits, and contains discussion of the influences of climate, geomorphology (relief), drainage, tectonism, structure, and protolith on the development of favorable weathering profiles. This model of Ni-Co laterite deposits represents part of the U.S. Geological Survey Mineral Resources Program's effort to update the existing models to be used for an upcoming national mineral resource assessment.

  20. Synthesis of colloidal dispersions of NiAl, ZnAl, NiCr, ZnCr, NiFe, and MgFe hydrotalcite-like nanoparticles.

    Science.gov (United States)

    Bellezza, Francesca; Nocchetti, Morena; Posati, Tamara; Giovagnoli, Stefano; Cipiciani, Antonio

    2012-06-15

    Colloidal aqueous dispersions of nanometric NiAl, ZnAl, NiCr, ZnCr, NiFe, and MgFe hydrotalcite-like compounds were prepared in a water/cetyltrimethylammonium bromide/n-butanol/isooctane microemulsion. Particle sizes were analyzed with different techniques, and the results confirm dimensions between 10 and 30 nm, except for ZnAl-HTlc (150-200 nm). A good colloidal stability of HTlc-NPs aqueous dispersions, investigated with DLS and Pz measurements, was obtained without the need for any stabilizing agent. SEM images clearly showed that the obtained HTlc posses a high tendency to spontaneously form homogeneous and dense stacking of plate-like HTlc crystals directly from aqueous solution, giving rise to the developing of functional materials in optical, electrical and magnetic fields. PMID:22459023

  1. Thermally induced atomic diffusion at the interface between release agent coating and mould substrate in a glass moulding press

    International Nuclear Information System (INIS)

    In a glass moulding press (GMP) for refractive/diffractive hybrid lenses, to improve the service life of nickel-phosphorus (Ni-P) plated moulds, it is necessary to control the diffusion of constituent elements from the mould into the release agent coating. In this study, diffusion phenomena of constituents of Ni-P plating are investigated for two types of release agent coatings, iridium-platinum (Ir-Pt) and iridium-rhenium (Ir-Re), by cross-sectional observation, compositional analysis and stress measurements. The results show that Ni atoms in the plating layer flow from regions of compressive stress to regions of tensile stress. In the case of the Ir-Pt coated mould, the diffusion of Ni is promoted from the grain boundaries between the Ni and Ni3P phases in the plating towards the surface of the Ir-Pt coating. However, in the Ir-Re coated mould, the diffusion of Ni is suppressed because the diffusion coefficient of Ni in the Ir-Re alloy is smaller than that in the Ir-Pt alloy, although the stress state is similar in both cases. By controlling the diffusion of Ni atoms, the use of Ir-Re alloy as a release agent coating for Ni-P plated moulds is expected to lead to a high degree of durability.

  2. Frenkel defects in Ni and Ni-base alloys

    International Nuclear Information System (INIS)

    The defect structure produced by low temperature (4K) electron irradiation in single crystals of Ni, Ni62Cu38 and Ni3 Fe was investigated by measurements of the diffuse scattering of X-rays (Huang Diffuse Scattering), the change of the lattice parameter and the change of the electrical resistivity: The volume relaxation and the structure of the self interstitial atom (SIA) is very similar for the alloys and the pure fcc metals. The interstitial clustering processes during stage I and II proceed progressively more slowly in Cu, Ni, NiCu and Ni3Fe respectively. In Ni3Fe even the di-interstitial seems immobile up to stage III. The formation of large vacancy agglomerates during stage III annealing is only observed with the pure metals Ni and Cu. Interstitial mobility during annealing in stage II contributes to the decomposition of NiCu but not to the ordering of Ni3Fe. There is an increase of order for highly ordered Ni3Fe (S = 0.7) during annealing in stage III and, within the errors, no change for samples with S = 0. (author)

  3. Mechanism and Microstructure of Electroless Ni-Fe-P Plating on CNTs

    Institute of Scientific and Technical Information of China (English)

    XUE Ru-jun; WU Yu-cheng

    2007-01-01

    Electroless Ni-Fe-P alloy plating on the surface of CNTs was carried out with a bath using citrate salt and lactic acid as complex agents. We proposed a chemical reaction mechanism. The morphology, structure and chemical composition of the Ni-Fe-P/CNTs were studied with the aid of a scanning electronic microscope (SEM), X-ray diffraction (XRD) and an energy-dispersive X-ray spectral analysis (EDS). The results show that through a correct pretreatment and electroless plating, Ni-Fe-P/CNTs composite particles can be obtained. The optimum electroless plating parameters of 35-42 ℃ and pH of 8.5-9.7 were achieved. The as-plated Ni-Fe-P alloy is amorphous. After a heat treat-ment at 500 ℃ for 90 min in H2, the coating is transformed into crystalloid Ni3P, Fe2NiP and (Fe,Ni)3P. The Ni-Fe-P al-loy coating on the surface of CNTs is smooth and unique. The amount of Ni on the surface (mass fraction) of the Ni-Fe-P/CNTs composite particles is 29.13%, that of Fe 3.19% and that of P 2.28%.

  4. AgentChess : An Agent Chess Approach

    OpenAIRE

    Fransson, Henric

    2003-01-01

    The game of chess has many times been discussed and used for test purpose by science departments of Artificial Intelligence (AI). Although the technique of agent and as well multi-agent systems is quite old, the use of these offspring of AI within chess is limited. This report describes the project performed applying the use of agents to a chess program. To measure the performance of the logic has tests between the developed program main parts been performed. Further tests against a tradition...

  5. Riot Control Agents

    Science.gov (United States)

    ... a person has been exposed to riot control agents. Long-term health effects of exposure to riot control agents Prolonged ... person is removed from exposure to riot control agents, long-term health effects are unlikely to occur. How you can ...

  6. Reasoning about emotional agents

    NARCIS (Netherlands)

    Meyer, J.-J.

    2008-01-01

    In this paper we discuss the role of emotions in artificial agent design, and the use of logic in reasoning about the emotional or affective states an agent can reside in. We do so by extending the KARO framework for reasoning about rational agents appropriately. In particular we formalize in this f

  7. Agents modeling agents in information economies

    Energy Technology Data Exchange (ETDEWEB)

    Vidal, J.M.; Durfee, E.H. [Univ. of Michigan, Ann Arbor, MI (United States)

    1996-12-31

    Our goal is to design and build agents that act intelligently when placed in an agent-based information economy, where agents buy and sell services (e.g. thesaurus, search, task planning services, etc.). The economy we are working in is the University of Michigan Digital Library (UMDL), a large scale multidisciplinary effort to build an infrastructure for the delivery of library services. In contrast with a typical economy, an information economy deals in goods and services that are often derived from unique sources (authors, analysts, etc.), so that many goods and services are not interchangeable. Also, the cost of replicating and transporting goods is usually negligible, and the quality of goods and services is difficult to measure objectively: even two sources with essentially the same information might appeal to different audiences. Thus, each agent has its own assessment of the quality of goods and services delivered.

  8. Room temperature ferromagnetism of Ni, (Ni, Li), (Ni, N)-doped ZnO thin films

    Institute of Scientific and Technical Information of China (English)

    AU; ChakTong

    2010-01-01

    Ni-doped ZnO thin films (Ni concentration up to 10 mol%) were generated on Si (100) substrates by a sol-gel technique. The films showed wurtzite structure and no other phase was found. The chemical state of Ni was found to be bivalent by X-ray photoelectron spectroscopy. The results of magnetic measurements at room temperature indicated that the films were ferromagnetic, and magnetic moment decreased with rise of Ni concentration. The magnetization of Ni (10 mol%)-doped ZnO film annealed in nitrogen was lower than that annealed in argon, suggesting that the density of defects had an effect on ferromagnetism.

  9. THE INTEGRATED AGENT IN MULTI-AGENT SYSTEMS

    OpenAIRE

    Maleković, Mirko; Čubrilo, Mirko

    2000-01-01

    [n this paper, we characterize the integrated agent in multi-agent systems. The following result is proved: if a multi-agent system is reflexive (symmetric, transitive, Euclidean) then the integrated agent of the multi-agent system is reflexive (symmetric, transitive, Euclidean), respectively. We also prove that the analogous result does not hold for multi-agent system's serial ness. A knowledge relationship between the integrated agent and agents in a multiagent system is presented.

  10. Influence of Process Parameters on Microhardness of Electroless Ni-B Coatings

    OpenAIRE

    Prasanta Sahoo; Suman Kalyan Das

    2012-01-01

    Electroless Ni-B coatings have found large applications due to their high hardness and wear resistance. The present paper tries to investigate the influence of coating process parameters on the microhardness of electroless Ni-B coating with the help of Taguchi analysis. Four parameters, namely, bath temperature, concentration of reducing agent, concentration of nickel source, and annealing temperature, are considered and fitted into an L27 orthogonal array to find out the optimized condition ...

  11. Magnetic properties of Ni nanoparticles embedded in silica matrix (KIT-6) synthesized via novel chemical route

    International Nuclear Information System (INIS)

    Thermally stable Ni nanoparticles have been embedded in mesoporous silica matrix (KIT-6) via novel chemical reduction method by using superhydride as reducing agent. X-ray diffraction (XRD) study confirms that pure and embedded Ni nanoparticles crystallize in face centered cubic (fcc) structure. Crystallite sizes of pure Ni, 4 wt% and 8 wt% Ni in silica were estimated to be 6.0 nm, 10.4 nm and 10.5 nm, respectively. Morphology and dispersion of Ni in silica matrix were studied by scanning electron microscopy (SEM). Magnetic study shows enhancement of magnetic moments of Ni nanoparticles embedded in silica matrix compared with that of pure Ni. The result has been interpreted on the basis of size reduction and magnetic exchange effects. Saturation magnetization values for pure Ni, 4 wt% and 8 wt% Ni in silica were found to be 15.77 emu/g, 5.08 emu/g and 2.00 emu/g whereas coercivity values were 33.72 Oe, 92.47 Oe and 64.70 Oe, respectively. We anticipate that the observed magnetic properties may find application as soft magnetic materials

  12. Magnetic properties of Ni nanoparticles embedded in silica matrix (KIT-6) synthesized via novel chemical route

    Energy Technology Data Exchange (ETDEWEB)

    Dalavi, Shankar B.; Panda, Rabi N., E-mail: rnp@goa.bits-pilani.ac.in [Department of Chemistry, BITS-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa-403726 (India); Raja, M. Manivel [Defence Metallurgical Research Laboratory, Hyderabad-500058 (India)

    2015-06-24

    Thermally stable Ni nanoparticles have been embedded in mesoporous silica matrix (KIT-6) via novel chemical reduction method by using superhydride as reducing agent. X-ray diffraction (XRD) study confirms that pure and embedded Ni nanoparticles crystallize in face centered cubic (fcc) structure. Crystallite sizes of pure Ni, 4 wt% and 8 wt% Ni in silica were estimated to be 6.0 nm, 10.4 nm and 10.5 nm, respectively. Morphology and dispersion of Ni in silica matrix were studied by scanning electron microscopy (SEM). Magnetic study shows enhancement of magnetic moments of Ni nanoparticles embedded in silica matrix compared with that of pure Ni. The result has been interpreted on the basis of size reduction and magnetic exchange effects. Saturation magnetization values for pure Ni, 4 wt% and 8 wt% Ni in silica were found to be 15.77 emu/g, 5.08 emu/g and 2.00 emu/g whereas coercivity values were 33.72 Oe, 92.47 Oe and 64.70 Oe, respectively. We anticipate that the observed magnetic properties may find application as soft magnetic materials.

  13. Chemical crowd control agents.

    Science.gov (United States)

    Menezes, Ritesh G; Hussain, Syed Ather; Rameez, Mansoor Ali Merchant; Kharoshah, Magdy A; Madadin, Mohammed; Anwar, Naureen; Senthilkumaran, Subramanian

    2016-03-01

    Chemical crowd control agents are also referred to as riot control agents and are mainly used by civil authorities and government agencies to curtail civil disobedience gatherings or processions by large crowds. Common riot control agents used to disperse large numbers of individuals into smaller, less destructive, and more easily controllable numbers include chloroacetophenone, chlorobenzylidenemalononitrile, dibenzoxazepine, diphenylaminearsine, and oleoresin capsicum. In this paper, we discuss the emergency medical care needed by sufferers of acute chemical agent contamination and raise important issues concerning toxicology, safety and health. PMID:26658556

  14. Decontamination Data - Blister Agents

    Data.gov (United States)

    U.S. Environmental Protection Agency — Decontamination efficacy data for blister agents on various building materials using various decontamination solutions This dataset is associated with the following...

  15. Fabrication of Ni-B alloy coated vapor-grown carbon nanofibers by electroless deposition

    OpenAIRE

    Arai, Susumu; Imoto, Yuzo; Suzuki, Yosuke; Endo, Morinobu

    2011-01-01

    Ni-B alloy coated vapor-grown carbon nanofibers (VGCNFs) were fabricated by electroless deposition and their microstructures were investigated. The effects of heat treatment on the coated VGCNFs were also studied. VGCNFs could be coated with a homogeneous Ni-B alloy film using a plating bath containing dimethylaminoborane (DMAB) as a reducing agent. The boron content of the Ni-B alloy film could be varied from 14 to 24 atom% B by varying the DMAB concentration of the plating bath. The VGCNFs ...

  16. Educational games: training of community healthcare agents on children's respiratory diseases Alimentación del recién nacido después del alta hospitalaria de una Institución Amiga del Niño Jogo educativo: capacitação de agentes comunitários de saúde sobre doenças respiratórias infantis

    OpenAIRE

    Raquel Dully Andrade; Débora Falleiros de Mello; Carmen Gracinda Silvan Scochi; Luciana Mara Monti Fonseca

    2008-01-01

    OBJECTIVE: Evaluating the use of an educational game about children's respiratory diseases by community healthcare agents (CHAs) in the Family Health Program. METHODS: This is a descriptive, intervention study, with the application of the game to 101 CHAs in Passos-MG. The game was structured with cases of children and families and their respective answer sheets. For evaluation, a test about the topic was applied before and after the intervention. RESULTS: Correct answers in the test increase...

  17. A Self-Propagating Foaming Process of Porous Al-Ni Intermetallics Assisted by Combustion Reactions

    Directory of Open Access Journals (Sweden)

    Makoto Kobashi

    2009-12-01

    Full Text Available The self-propagating foaming process of porous Al-Ni intermetallics was investigated. Aluminum and nickel powders were blended, and titanium and boron carbide powders were added as reactive exothermic agents. The blended powder was extruded to make a rod-shape precursor. Only one end of the rod precursor was heated to ignite the reaction. The reaction propagated spontaneously throughout the precursor. Pore formation took place at the same time as the reaction occurred. Adding the exothermic agent was effective to increase the porosity. Preheating the precursor before the ignition was also very effective to produce porous Al-Ni intermetallics with high porosity.

  18. Radiographic scintiscanning agent

    International Nuclear Information System (INIS)

    A new technetium-based scintiscanning agent has been prepared comprising a water soluble sup(99m)Tc-methanehydroxydiphosphonate in combination with a reducing agent selected from stannous, ferrous, chromous and titanous salts. As an additional stabilizer salts and esters of gentisic or ascorbic acids have been used. (E.G.)

  19. Agent Development Toolkits

    CERN Document Server

    Singh, Aarti; Sharma, A K

    2011-01-01

    Development of agents as well as their wide usage requires good underlying infrastructure. Literature indicates scarcity of agent development tools in initial years of research which limited the exploitation of this beneficial technology. However, today a wide variety of tools are available, for developing robust infrastructure. This technical note provides a deep overview of such tools and contrasts features provided by them.

  20. Percepciones en salud bucal de los niños y niñas

    Directory of Open Access Journals (Sweden)

    Catalina González-Penagos, Colombia.

    2015-07-01

    Full Text Available (analítico: Identificamos las necesidades de salud bucal de los niños y niñas de 2 a 5 años del programa Buen Comienzo-Fantasías de las Américas, desde la percepción de las agentes educativas en la ciudad de Medellín, en el año 2013. Realizamos un estudio cualitativo, con enfoque histórico hermenéutico; la población de estudio correspondió a 65 agentes educativas. Los resultados preliminares reflejan necesidades relacionadas con el acceso y oportunidad de atención odontológica, la deficiencia en las acciones de promoción de la salud y prevención de las enfermedades prevalentes en salud bucal, el desconocimiento y la falta de motivación de los hábitos de higiene bucal, su importancia en la prevención de las patologías bucales y su implicación con el crecimiento y desarrollo, y con la salud general de los menores y las menores.

  1. Asimovian Adaptive Agents

    CERN Document Server

    Gordon, D F

    2011-01-01

    The goal of this research is to develop agents that are adaptive and predictable and timely. At first blush, these three requirements seem contradictory. For example, adaptation risks introducing undesirable side effects, thereby making agents' behavior less predictable. Furthermore, although formal verification can assist in ensuring behavioral predictability, it is known to be time-consuming. Our solution to the challenge of satisfying all three requirements is the following. Agents have finite-state automaton plans, which are adapted online via evolutionary learning (perturbation) operators. To ensure that critical behavioral constraints are always satisfied, agents' plans are first formally verified. They are then reverified after every adaptation. If reverification concludes that constraints are violated, the plans are repaired. The main objective of this paper is to improve the efficiency of reverification after learning, so that agents have a sufficiently rapid response time. We present two solutions: ...

  2. How do agents represent?

    Science.gov (United States)

    Ryan, Alex

    Representation is inherent to the concept of an agent, but its importance in complex systems has not yet been widely recognised. In this paper I introduce Peirce's theory of signs, which facilitates a definition of representation in general. In summary, representation means that for some agent, a model is used to stand in for another entity in a way that shapes the behaviour of the agent with respect to that entity. Representation in general is then related to the theories of representation that have developed within different disciplines. I compare theories of representation from metaphysics, military theory and systems theory. Additional complications arise in explaining the special case of mental representations, which is the focus of cognitive science. I consider the dominant theory of cognition — that the brain is a representational device — as well as the sceptical anti-representational response. Finally, I argue that representation distinguishes agents from non-representational objects: agents are objects capable of representation.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-10-01

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

  4. Shape estimation of the buried body from the ground surface potential distributions generated by current injection; Tsuryu ni yoru chihyomen den`i bunpu wo riyoshita maizobutsu keijo no suitei

    Energy Technology Data Exchange (ETDEWEB)

    Takahashi, Y.; Okamoto, Y. [Chiba Institute of Technology, Chiba (Japan); Noguchi, K. [Waseda University, Tokyo (Japan); Teramachi, Y. [University of Industrial Technology, Kanagawa (Japan); Akabane, H.; Agu, M. [Ibaraki University, Ibaraki (Japan)

    1996-10-01

    Ground surface potential distribution generated by current injection was studied to estimate the shape of buried bodies. Since the uniform ground system including a homogeneous buried body is perfectly determined with the surface shape of a buried body and resistivities in/around a buried body, inversion is easy if the surface shape is described with some parameters. N electrodes are arranged in 2-D grid manner on the ground, and two electrodes among them are used for current injection, while the others for measurement of potentials. M times of measurements are repeated while changing combination of electrodes for current injection. The potential distribution measured by the mth electrode pair is represented by N-2 dimensional vectors. The square error between this distribution and calculated one is the function of k parameters on the surface shape and resistivities on a buried body. Both shape and resistivities can be estimated by solving an optimum value problem using the square error as evaluation function. Analysis is easy for a spherical body with 6 unknown parameters, however, it is difficult for more complex bodies than elliptical one or more than two bodies. 5 refs., 9 figs.

  5. Discrimination of aromas from several kinds of alcohol using synthetic-resin-film-coated quartz resonator smell sensor; Gosei jushimaku wo tofushita suisho shindoshishiki nioi sensor ni yoru sake no shurui hanbetsu

    Energy Technology Data Exchange (ETDEWEB)

    Kondo, K.; Yamamoto, H.; Morita, T. Dogami, N.; Nanto, H. [Kanazawa Institute of Technology, Ishikawa (Japan); Doguchi, Y. [Industrial Research Institute of Ishikawa Prefecture, Ishikawa (Japan)

    1997-08-20

    Transient response curves for aromas from several kinds of alcohol such as Fruit Liquor (8%), Wine (14%), Japanese Sake (15%) and Whisky (43%) are observed using quartz-crystal-resonator gas sensor coated with synthetic-resin-film(acrylic resin, alkyd resin or urethane resin). The pattern recognition analysis using principal component analysis or neural network analysis is carried out using four parameters which characterize the transient response curves. The recognition probability of neural network for four kinds of alcohol is 100% for 20 trials. 10 refs., 8 figs., 1 tab.

  6. Improvement of a manageability of biological nitrogen and phosphorus removal plant using a wastewater treatment process simulator; Gesui shori purosesu shimyureta no riyo ni yoru seibutsuteki chisso/rin jokyo puranto no kanrisei no kojo

    Energy Technology Data Exchange (ETDEWEB)

    Kurata, G. [Toyohashi Univ. of Technology, Aichi (Japan). Faculty of Engineering; Tsumura, K. [Kyoto Univ., Kyoto (Japan). Graduate School; Yamamoto, Y. [Osaka Prefectural Inst. of Public Health, Osaka (Japan)

    1997-02-10

    In this paper, a method for executing a stable management of wastewater treatment process is examined by using a wastewater treatment process simulator with the facilities adopting intermittently aerated 2-tank activated sludge process as the object. The following results are obtained from said examination. Based on a fact that the treatment efficiency is influenced greatly by the comparatively miner parts of the process in biological nitrogen and phosphorus removal, a wastewater treatment process simulator, by which the intrinsic process flow, restricting conditions and behaviors of controlling system of each facility can be dealt with, is developed by using object-directional model. As the results of this development, not only the effects approximate to those of actual process can be obtained, but also the trial error and alternation of process flow can be realized in a short time. The serious influence of disappearance of dissolvable organic substance in flow-adjusting tank upon the deterioration of biological phosphorus removal is clarified by the results of the simulation based on the investigation of flowing-in water quality. 12 refs., 13 figs., 4 tabs.

  7. Stabilization of multi-machine power system by coordinated excitation control of multiple adjustable-speed generator/motors; Fukusu kahensoku hatsuden dendoki no reiji den`atsu kyocho seigyo ni yoru taki keito anteika

    Energy Technology Data Exchange (ETDEWEB)

    Tatematsu, M.; Yokoyama, A. [The University of Tokyo, Tokyo (Japan)

    1996-01-20

    Since an adjustable-speed generator/motor (ASGM) is excited by AC voltage fed by a quick-response cycloconverter, a rotating speed of the rotor can be changed continuously. The ASGMs installed at some pumping-up power stations are now operated effectively for automatic frequency control under the lightly loaded condition at night by changing the pumping-up power due to the rotating speed change. It is expected, on the other hand, that under the generating condition in the daytime the ASGM will be used for enhancement of transient stability because it can generate or absorb active and reactive power independently of each other by AC excitation voltage control. This paper proposes a novel control method of excitation system of ASGM for improving the transient stability of a multi-machine power system including multiple ASGMs. The controller which is designed based on an energy function works well for the stability enhancement. In comparison with the conventional excitation control of synchronous generator and constant output control of ASGM, the effectiveness of the proposed method is shown by digital simulations. 10 refs., 5 figs., 2 tabs.

  8. Relationship between robust stability and power system damping enhancement by excitation control system of adjustable-speed generator; Kahensoku hatsudenki reiji denatsu seigyo kei ni yoru denryoku keito danpingu kojo koka to robasuto anteisei no kankei

    Energy Technology Data Exchange (ETDEWEB)

    Shigeto, T.; Yokoyama, A. [Tokyo Univ. (Japan)

    1997-12-20

    Since Adjustable-Speed Generator (ASG) is excited by alternative voltage fed by a quick-response cycloconverter, the rotor speed can be changed continuously. The ASGs installed at sonic pumping-up power stations are now utilized for Automatic Frequency Control at night time and under the light load condition by changing the pumping-up power due to the rotating speed change. It is expected. on the other hand. that under the generating condition at day time ASG will be utilized for improvement of power system stability because it can change the active power and the reactive power independently of each other. This paper presents the effect of the excitation control system of ASG designed by robust pole allocation method which is one of the controller design techniques besed on H{infinity} control theory, on the power system damping enhancement. Eigenvalue analysis and digital time simulation are carried out for 10-machine longitudinal test power system including ASGs in order to evaluate the designed controller. 5 refs., 23 figs., 5 tabs.

  9. Efficient oxidation of 2-mercaptopyridine catalyzed by heptylviologen and application to photosensitized carbon dioxide fixation; Pepuchirubioroben ni yoru 2-mercaptopyridine no koritsuteki sanka oyobi hikari zokan nisanka tanso kotei hanno eno oyo

    Energy Technology Data Exchange (ETDEWEB)

    Odaka, M. [National Institute of Bioscience and Human-Technology, Tsukuba (Japan)

    1996-10-10

    In acetonitrile solution, efficient oxidation of 2-mercaptopyridine (PySH) to disulfide was accomplished in the presence of catalytic amount of heptylviologen (HV{sup 2+}). The reaction gave the Michaelis-Menten type kinetics, which suggests that an electron is transferred from PyS{sup -} to HV{sup 2+} via the complex formation between these two species. This reaction was applied to the formation of 2-oxazolidinone derivative from carbon dioxide and L-phenylalaninol. Contrary to the expectation, however, the reaction scarcely proceeded. This may be due to the coordination of coexisting Ph3P to HV{sup 2+}, which prevents the complex formation between HV{sup 2+} and PyS{sup -}. When the above system was irradiated (>370 nm), however, the reaction was enhanced. The excited PyS{sup -}* with higher reducing power probably can give an electron to HV{sup 2+} even in the absence of HV{sup 2+}-PyS{sup -} complex. 11 refs., 2 figs., 1 tab.

  10. Fiscal 1998 research report. Development of metal forming technology by new energy-saving process (2nd fiscal year); 1998 nendo sho energy gata shin process ni yoru kinzoku seikei gijutsu no kaihatsu (dai 2 nendo)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Based on computer-aided science possible to estimate phase transformation temperatures affecting fine crystal grain control strongly, this research develops the energy- saving production technology for near-net-shape manufacturing of heat-resistant hard materials such as HSS, TiAl and W, by using the new sintering and bonding technology by texture control, complex carbide dispersion technology and pulse discharge sintering based on phase diagram calculation. In fiscal 1998, study was made on optimum alloy composition and heat treatment condition to obtain high-hardness steel with the performance over that of existing HSS by carbide dispersion carburizing process using conventional gas-carburizing facility, based on the data of phase diagram calculation. As a result, the composition and heat treatment condition necessary to obtain a target hardness of Hv1000 were determined. As the research result in both fiscal 1997 and 1998, 10Mo-5V alloy for HSS including a large amount of Mo and V, and 3.5Mo- 1.5V-3Cr alloy for HSS including less than 6% Mo and V are promising as basic composition for the future R and D. (NEDO)

  11. Solubilization of meso-carbon microbeads by potassium- or dibutylzinc-promoted butylation and structural analysis of the butylated products; Mesocarbon microbeads no butyl ka ni yoru kayoka to erareta butyl kabutsu no kozo kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Murata, S.; Zhang, Y.; Kidena, K.; Nomura, M. [Osaka University, Osaka (Japan). Faculty of Engineering

    1996-10-28

    Tetrahydrofuran (THF) solubility and structure of the butylated products of meso-carbon microbeads (MCMB) were studied experimentally. In experiment, MCMB-A and MCMB-B obtained from two kinds of coal-tar pitch were used as specimens. MCMBs were butylated by BZ method using dibutylzinc-butyl iodide and KT method using K-butyl iodide-THF, and the butylated products were successfully obtained. The butylated products were investigated through THF solubility test, {sup 13}C-NMR measurement and gel permeation chromatography (GPC) measurement. As the experimental result, a BZ method produced the butylated products at a yield of nearly 170%, while a KT method produced them at a yield of nearly 130%. The THF solubility was estimated to be 89-97%. As the study result of molecular weight distributions by GPC measurement of solvent solubles, the molecular weight of raw material MCMB was estimated to be 590-770 in terms of polystyrene. 6 refs., 2 figs., 1 tab.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-10-28

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

  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. Development of membrane bioreactor system. 1. ; Selective permeation of protein solutions by electric microfiltrations. Mokei bioreactor system no kaihatsu. 1. ; Denki seimitsu roka ni yoru tanpakushitsu no sentaku toka

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, Y.; Totsuka, Y.; Kuwahara, H. (Shizuoka Industrial Research Institute, Shizuoka (Japan))

    1992-07-01

    Investigation was carried out to apply electric microfiltration to the separation of fungus under fermentation from protein. A charged-type ultrafine filtration membrane was experimentally prepared to be combined with an electric field for the purpose of examining the permeation behaviour of membrane. First, a mixed suspension of bakers' yeast and bovine serum albumin was used as model ferment liquid so as to examine filtering conditions. In consequence, it was found that pH adjustment can control permeability; albumin content is increased as the electric field is strengthened; the current of less than 0.3A is practical in consideration of denaturation of protein and so forth. A ferment liquid yielding bacteriolytic enzyme was used as actual ferment liquid so as to confirm the above information. This method was judged to be effective for concentration and penetration of enzyme in bioreactors from the data on the relation between the blocking rate of enzyme and the change-over of polarity. It is considered possible from the investigation in which sulfonated polysulfon ultrafine filtering membrane as charge type membrane is combined with electric field to separate nucleic acids of similar molecular weight by their electric charge. 20 refs., 7 figs.

  15. Three-dimensional computer simulation at vehicle collision using dynamic model. Application to various collision types; Rikigaku model ni yoru jidosha shototsuji no sanjigen kyodo simulation. Shushu no shototsu keitai eno tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Abe, M.; Morisawa, M. [Musashi Institute of Technology, Tokyo (Japan); Sato, T. [Keio University, Tokyo (Japan); Kobayashi, K. [Molex-Japan Co. Ltd., Tokyo (Japan)

    1997-10-01

    The past study of safety at vehicle collision pays attention to phenomena within the short time from starting collision, and the behavior of rollover is studied separating from that at collision. Most simulations of traffic accident are two-dimensional simulations. Therefore, it is indispensable for vehicle design to the analyze three-dimensional and continuous behavior from crash till stopping. Accordingly, in this study, the three-dimensional behavior of two vehicles at collision was simulated by computer using dynamic models. Then, by comparison of the calculated results with real vehicles` collision test data, it was confirmed that dynamic model of this study was reliable. 10 refs., 6 figs., 3 tabs.

  16. Joint stiffness identification of body structure using neural network. Jointed part composed of 2 beams; Neural network ni yoru shatai kozo no ketsugo gosei dotei. Buzai 2 hon kara naru ketsugobu no baai

    Energy Technology Data Exchange (ETDEWEB)

    Okabe, A.; Tomioka, N. [Nihon University, Tokyo (Japan)

    1997-10-01

    The method to obtain a joint stiffness value from displacements of jointed part using hierarchical neural networks in case of a jointed part composed of two beams were proposed. First, the sample data of displacements of jointed part vs. joint stiffness are prepared as learned data. Second, the relations between displacements of jointed part and joint stiffness are constructed from these learned data using a hierarchical neural networks. It was found that the value of joint stiffness can be obtained from displacement of jointed part by the trained neural network. 4 refs., 9 figs., 2 tabs.

  17. Attempt of lean burn of a 4 cycle gasoline engine by the aid of low pressure air assisted in-cylinder injection; Tonai kuki nenryo funsha ni yoru lean burn no kokoromi

    Energy Technology Data Exchange (ETDEWEB)

    Hatakeyama, S.; Kondo, M.; Sekiya, Y.; Murayama, T. [Hokkaido Automotive Engineering College, Hokkaido (Japan)

    1997-10-01

    Comparable performance and exhaust emission with conventional carburetor was obtained by a low Pressure air assisted in-cylinder injection system. And lean burn of idling and light load operation till A/F=70 was realized by installing a spark Plug and a reed type injection nozzle in a divided combustion chambaer of a 4 cycle gasoline engine. 2 refs., 10 figs.

  18. Studies on transmission property changes of optical fibers inside an OPGW heated by conducting or discharge currents; OPGW tsuden/hoden kanetsu ni yoru hikari denso tokusei hendo no kento (sodensen kanshi hoho no chosa kenkyu)

    Energy Technology Data Exchange (ETDEWEB)

    Yamashita, I.; Seikai, S.; Takenaka, T. [Kansai Elecatric Power Co. Inc., Osaka (Japan)

    1999-09-30

    Temperature of OPGW's is known to increase due to thunderbolt. Therefore, the measurement of transmission characteristic changes of optical fibers inside the OPGW is seems to be useful method to supervise the electric power sending systems. Candidates for the detectable characteristics are optical loss, Brilloum frequency shift and Raman scattering power because distribution of these changes can be measured by OTDR techniques. In this experiments, those properties are investigated using a high voltage supply system at the Central Research Institute of Electric Power Industry. A test OPGW containing 24 fibers including 22 single-mode and 2 multi-mode fibers is installed with a span length of 20m. In the current conducting test, the OPGW is heated up to 250 degree C through three times conduction of 6kA with each duration time of 600 or 700ms. In the discharge current test, electric charge of 50C(coulomb), 100C and 200C with 20ms duration are applied. The results of the experiments are summarized as follows. The optical loss change is negligible small except for the fiber brake case and the Brilloum frequency shift is not always suitable because the sensitivity is small. The temperature measurement by the Raman scattering observation using the multi-mode fibers is found to have enough sensitivity and accuracy. However, residual problem is to increase the sensitivity of it for single mode fibers. (author)

  19. Study of coherent optical fiber communication in electromagnetic field. 2. Optical polarization transient by impulse current in OPGW; Coherent hikaritsushin eno denjikai no eikyo to taisaku. 2. Impulse denryu ni yoru OPGW denpako no henpa hendo

    Energy Technology Data Exchange (ETDEWEB)

    Kurono, M.; Isawa, K.; Kuribara, M. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

    1995-03-01

    A coherent optical fiber communication method has possibility of large capacity transmission for future, but it needs a control of polarization state of optical signal. So it is important to clear the optical polarization characteristics of OPGW because the polarization state may change rapidly by alternative current or lightning. This report describes the experimental results of transient states of optical polarization and coherent transmission characteristics by large impulsive current in OPGW (200m length). The impulse current is maximum 16kA at peak and 1{times}10 us rise and tail time. Polarization states are measured by a real time stokes analyzer with 10 MHz band width. As a result, the maximum shift of polarization state on Poincare sphere is about 70 degree and the rise time is about 12us, which is much longer than current use time 1us. We found the reason that the polarization rise time is caused by the inductance of spiral current along twisted conductors of OPGW, which makes magnetic field along the fiber in OPGW so as to occur Faraday effect. The coherent optical FSK transmission characteristics in transient state of optical polarization by impulse current is also described. In the case of single detection, bit errors are caused when the polarization states of optical signal on Poincare sphere move about 150 degree from the polarization state of local optical source. And in the case of polarization diversity detection, bit error is not caused by any change of polarization. 7 refs., 31 figs., 2 tabs.

  20. Development of lightning resistant overhead ground wire and characteristics against lightning current triggered by rocket; Tai rai kaku chisen no kaihatsu to rokketo yurai no jitsuraigeki denryu ni yoru tai rai seino no kensho

    Energy Technology Data Exchange (ETDEWEB)

    Shimizu, M.; Yokoya, M.; Kawashima, T. [Chubu Electric Power Co. Inc., Nagoya (Japan); Omi, H. [Sumitomo Electric Industries Ltd., Osaka (Japan); Asano, Y. [Fujikura Ltd., Tokyo (Japan); Goda, Y. [Central Research Inst. of Electric Power Industry, Tokyo (Japan); Nakamura, K. [Nagoya Inst. of Technology, Nagoya (Japan)

    1997-03-20

    It has been important to maintain high reliability for supplying electric power in recent high-intelligent society. Overhead ground wires (GW) are installed at upper positions of overhead transmission lines in order to prevent lightning attack on conductors. As the sacrifice, GW sometimes gets certain damages including strand-breakage by a severe lightning attack. Recently, optical fiber composite ground wire(OPGW), which has arisen for development of strong GW against lightning attack, in particular for transmission lines passing through areas where `winter lightning` with enormous electric charge occurs, or areas where frequent lightning occurs. We investigated materials and strand structures to get high lightning-resistant properties and verified by rocket-triggered lightning experiments and DC arc tests. As the results, we have developed excellent lightning-resistant OPGW that has fundamental properties equivalent to conventional GW. 12 refs., 12 figs., 4 tabs.

  1. Line focus by the ellipsoidal and hyperbolic mirrors, and the fabrication of the new type`s heated air engine. 1; Daenmenkyo to sokyokumenkyo ni yoru line focus to shingata netsu kuki engine no shisaku. 1

    Energy Technology Data Exchange (ETDEWEB)

    Shishido, K.; Kazimierski, Z.; Shoji, T. [Tohoku Gakuin University, Sendai (Japan). Faculty of Engineering; Sugiura, M. [Tohoku Gakuin Tsutsujigaoka High School, Sendai (Japan); Kobayashi, Y. [Tokyo Special Glass Co. Ltd., Tokyo (Japan)

    1996-10-27

    Line focusing by ellipsoidal and hyperbolic mirrors was devised for solar heat collection, and the new prototype heated air engine is under fabrication based on such focusing. Ellipse is a locus of the point at which the distance from the 2nd focus is equal to that from the circle with the 1st focus as a center and the major axis as a radius. Hyperbola can be also figured under similar geometric conditions. The link mechanism possible to machine quadratic surfaces based on the above principle has been developed. High-precision quadratic surface mirrors can be fabricated by the link mechanism for convergent solar heat power generation, achieving line focusing of light. The new prototype heated air engine is also proposed which is composed of the heating part by line focusing, cylinder, piston and cooling column. This engine is featured by simple function, light weight, compact body, high efficiency and safety, and is under fabrication. Although conventional converging mirrors use all the mirror surface, the new line focusing uses only the upper part of the mirror, and the lower part is turned over for protection of the mirror from strong wind. 9 figs.

  2. Effect of heat-insulating wall on input energy of a photovoltaic/solar/air-heat system for a residence; Jutaku no kodannetsuka ni yoru taiyoko netsu/taiki netsu system no donyu energy sakugen koka

    Energy Technology Data Exchange (ETDEWEB)

    Kenmoku, Y.; Sakakibara, T. [Toyohashi University of Technology, Aichi (Japan); Nakagawa, S. [Maizuru College of Technology, Kyoto (Japan)

    1996-10-27

    A proposal was made to introduce a photovoltaic/solar/air-heat system which positively utilizes natural energy in order to curtail consumption of fossil energy, corroborating that the system has greatly reduced energy input in the primary energy level in a house. This paper examines the effect of curtailment of energy input in the case of reducing the load of air conditioning through the high heat insulation of a house. The energy input was evaluated by calculating additional equipment energy needed newly for the high heat insulation. The system performance and the energy load varied greatly depending on weather conditions. The subject system consisted of solar cells, inverter, heat concentrator, heat storage tank, heat pump and gas hot-water supply device. The thickening of the insulation sharply reduced heating load in the house, thereby decreasing fuel energy substantially. An insulation material of 100mm thick was capable of reducing energy input by 16-23% compared with that of 50mm thick. 5 refs., 5 figs, 3 tabs.

  3. Application of a temperature selective storage tank solar system. Part 4. Fundamental experiment under a solar simulator; Ondo sentaku chikunetsuso no solar system eno tekiyo. 4. Solar simulator ni yoru kiso jikken

    Energy Technology Data Exchange (ETDEWEB)

    Kanayama, K.; Endo, N.; Baba, H.; Okamoto, A. [Kitami Institute of Technology, Hokkaido (Japan); Kamiya, Y. [Kanto Gakuin University, Yokohama (Japan)

    1996-10-27

    The storage tank is classified into a mixed type and stratified type. The stratified type is judged to be more advantageous from a viewpoint of the effective energy utilization. An experiment was made using a solar simulator to put the system, consisting of a vacuum double-glass tube collector and temperature selective storage tank, to practical use. The ejection position of the storage tank at the top is superior to that at the bottom, in the 60{degree}C layer of three layers (60, 40, and 20{degree}C). The ejection position hardly varies with the shape (straight or elbow) of an ejection port. When the temperature stratified layer is formed in two layers (40 {times} 2, 20{degree}C) to three layers (60, 40, and 20{degree}C), heat can be stably stored as the flow rate is higher. The stratified storage tank is inferior to the mixed storage tank in heat collection efficiency, but the specific exergy increases. By increasing the number of heat storage layers, the result of this experiment can also be applied to the linear temperature gradient layer obtained in the practical use. As a result of the above experiment, the basic data for an automated system design during practical application was obtained. 3 refs., 15 figs.

  4. Solid electrolyte membranes and the system to produce hydrogen from thermally decomposed water by solar energy; Taiyo energy riyo ni yoru mizu no chokusetsu netsubunkai kara no suiso seizoyo

    Energy Technology Data Exchange (ETDEWEB)

    Nigara, K.; Watanabe, K.; Kawamura, K.; Kawada, T.; Mizusaki, J.; Ishigame, M. [Tohoku University, Sendai (Japan). Research Institute for Scientific Measurements

    1996-10-27

    For conversion of solar heat to transportable energy, hydrogen production by direct thermal decomposition of water using concentrated high-temperature solar heat was studied. Water vapor is injected into the tubular target with high melting point and high oxygen permeability at high temperature while heating the target by concentrated solar heat over 2000K. Oxygen in decomposed gas is discharged through an oxygen permeable membrane to extract hydrogen. Solid electrolyte is used as one of the target materials. Oxygen gas in the high-oxygen partial pressure site changes into oxygen ion by accepting two electrons at the target surface, and returns to neutral oxygen gas in the low-oxygen partial pressure site by discharging two electrons at the surface after permeation through oxygen vacancy. In the case of n-type solid electrolyte, to obtain constant permeation of a large amount of oxygen, flow of a large amount of electrons is indispensable in the opposite direction to oxygen ion. Among [(ZrO2)(1-x)(CeO2)x](0.9)(CaO)(0.1), materials of 0.4-0.5 in x seems to be useful as the target material. 7 refs., 7 figs.

  5. Design optimization of ideal non-imaging concentrators for solar collectors by use of yearly insolation model with frequency distribution; Dosu bunpu wo koryoshita nenkan nissha model ni yoru shunetsuyo riso hikessho shukoki no saitekika

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-10-27

    Optimization was carried out for the 2D-CPC (compound parabolic concentrator) known as an ideal 2-dimensional non-imaging concentrator for its application to stationary solar heat concentrators. A non-imaging optical system is a system that has an angle for incident light called an acceptance angle, and is treated as an effective tool in the field of solar energy application. Analysis was conducted from the viewpoint of energy and exergy on the presumption of constant temperature operation. For the analysis of constant temperature heat concentration, it needs to be presumed that heat concentrators are in operation only in the presence of insolation that is more than a specified level (critical insolation). When the acceptance angle is fixed for optimization, energy efficiency does not have a peak with respect to the critical probability insolation intensity (in a probability model considering frequency distribution). On the other hand, for the optimization of exergy efficiency, the half-acceptance angle should be within a 35-40{degree} range (agreeing with the optimum angle cost-wise), and the critical probability insolation should be set at 250-300W/m{sup 2} (1/4 of the maximum insolation intensity). The obtained results are low in model dependency and are sufficiently reliable. 14 refs., 4 figs.

  6. Recent progress in 'bioelectronics' research. Part 2. ; Biocomputer (biological artificial neural networks formed by cultured neurons). Baioerekutoronikusu eno michi (shorai wa saibogu mo) 2. ; Baiokonpyuta (baiyo shinkei saibo ni yoru jinko shinkei kairo)

    Energy Technology Data Exchange (ETDEWEB)

    Kawana, A. (Nippon Telegraph and Telephone Corp., Tokyo (Japan))

    1994-02-20

    A report is made on the study on the functions of neural networks in which cultured neurons are used. A group of brain neurons is taken to pieces once, and restructured in a dish into a neural network. It is possible to observe the behavior of such a neural network. A neurite starts extending from each cell in about a week to form a neural network. The activity of the neural network is then investigated. Many flat microelectrodes are formed instead of acicular electrodes on the substrate where cells are cultivated by microprocessing, and measurement of electrical activity of cells through the electrodes is attempted. In the cultured neural network formed on a micro electrode array, electrical signals can be exchanged with the outside through this electrode. This method seems to be effective for the study of the effect of prolonged stimuli on the functions of the neural network, i.e. mechanism of learning. Formation of a simple neural network is attempted wherein cells exist only on the electrode to form mutual joining. 9 refs., 8 figs.

  7. Interactive flow around two circular cylinders of different diameters at close proximity. Experiment and numerical analysis by vortex method; Kinsetsu ikei nienchu mawari no kansho nagare. Jikken oyobi uzuho ni yoru suchi kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Tsutsui, T.; Igarashi, T. [National Defense Academy, Kanagawa (Japan); Kamemoto, K. [Yokohama National University, Yokohama (Japan). Faculty of Engineering

    1996-02-25

    Experimental investigations and numerical analysis were carried out to clarify the behavior of an interactive flow around two circular cylinders with different diameters, in particular, the phenomenon that the shear layer separated from the main cylinder reattaches to the rear surface due to the Coanda effect. Numerical analysis was simplified by applying a vortex method and a boundary element method. The results obtained were as follows. The reattachment due to the Coanda effect appeared intermittently and could simulated. Negative lift acted on the main cylinder, and the calculated lift and drag coefficient showed good agreement with those of experiments. The calculated Strouhal numbers were 20-30% higher than the experimental ones. 17 refs., 17 figs.

  8. Local space air conditioning by covering with a plane jet. Part 1. Basic characteristics of heating in model chamber. Kukimaku riyo ni yoru kyokusho kukan kucho. 1. Onfunryu wo mochiita danboji no kihon tokusei (mokei jikken)

    Energy Technology Data Exchange (ETDEWEB)

    Yamada, N. (Shinryo Corp., Tokyo (Japan)); Kubota, H.; Ijichi, T.; Kurosawa, K.; Yoshida, Y.; Hanaoka, Y. (Muroran Institute of Technology, Hokkaido (Japan))

    1994-05-25

    It is intended to use a space closed by an air film (vortex region) as a utilization space, and air-condition the space locally. The discussed method utilizes a phenomenon that plane jet in a semi-closed space deposits on a floor as a result of the Coanda effect. The Coanda effect, however, may not appear with warm jet during room heating. A discussion was given to derive the limit of the effect, and elucidated the temperature characteristics of the vortex region when the space was with and without obstacles. When the effect does not develop, the buoyancy of the warm jet in the horizontal direction supersedes static pressure drop generated by attracting flow rate of the flow. The experiment proposes the limiting condition of the jet deposition as K = Ar (Hs/h) [sup 3/2] (where Ar is an Archimedian number, Hs is a vertical distance from the floor to the center of the air outlet, and h is the air outlet width). The distance for the warm jet to deposit on the floor is constant irrespective of the air blow-out velocity and the blow-out temperature difference, where a relation of Ls/Hs [approx] 1.56 may be established. The temperature in the vortex region where there are no obstacles on the floor is a function of height and width of the air outlet, and that for where obstacles exist is expressed as a function of the obstacle installing distance and the outlet width. 3 refs., 13 figs., 1 tab.

  9. 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.

  10. TEM observation of the Al and Cu interfaces bonded at room temperature by means of the surface activation mehtod. Hyomen kasseikaho ni yoru Al oyobi Cu joon setsugo kaimen no TEM kansatsu

    Energy Technology Data Exchange (ETDEWEB)

    Suga, T.; Miyazawa, K.; Takagi, H. (The Univ. of Tokyo, Tokyo (Japan). Faculty of Engineering The Univ. of Tokyo, Tokyo (Japan))

    1990-06-20

    Al and Cu were bonded to various ceramics and Si by a surface activation method with irradiation of an Ar fast atom beam before bonding at room temperature, and their interfaces were observed by a TEM (transmission electron microscopy). Al was bonded successfully to various oxides and nitrides with bond strengths of 50-100MPa in the vacuum range of 9 {times} 10 {sup {minus} 5}- 2 {times} 10 {sup {minus} 6} Pa, while no macroscopic bonding could be obtained between Cu and ceramics. Amorphous intermediate layers of 10-20nm in thickness were observed in the Al-Al and Al-Si interfaces by the TEM which were possibly formed with the reaction between some residual gases and Al surfaces by irradiation of an Ar fast atom beam. On the other hand, since no intermediate layers but interfacial dislocations were observed in the Cu-Cu interfaces, it was supposed that the direct bonding between Cu lattices was formed. 20 refs., 11 figs., 2 tabs.

  11. Achievement report for fiscal 1998. Research and development of super-functional environment-resistant materials by controlling trace metal ion implantation; 1998 nendo seika hokokusho. Gokubiryo kinzoku ion chunyu seigyo ni yoru chokino taikankyo zairyo no kenkyu kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The aim was to develop reliable materials high in resistance to hostile environments, greatly improved in their resistance to oxidation, abrasion, and corrosion at high temperatures. To achieve the goal, trace quantities of high melting point metals were implanted into the compound formed on the substrate surface or deep into the substrate material. This year's research and development is outlined below. Important technologies in the ion process involved materials which at high temperatures were very resistant to oxidation, abrasion, and corrosion. The high-temperature oxidation resistant material was studied for use with the automobile supercharger rotor. The study on the high-temperature abrasion resistant material involved Ti-N thin coatings: the optimization of coating conditions, slidability at room temperature, and slidability in a high-temperature atmosphere. As for the high-temperature corrosion resistant material, studies were made to use it for refuse-fueled power generation. The TiAl material was also studied: the effect of ion implantation on the improvement of its high-temperature oxidation resisting capability, analysis into oxidized alloy surface properties, ion implantation into complicatedly shaped items and the optimum material for them, and the surface treatment by ion beams for improving resistance to high-temperature corrosion. (NEDO)

  12. Function development through microstructure control. Control of crystal axis orientation of zinc oxide and its optical properties; Soshiki seigyo ni yoru kino hatsugen. Sanka aen no haikosei seigyo to kogakuteki kino

    Energy Technology Data Exchange (ETDEWEB)

    Fujitsu, S. [Shonan Institute of Technology, Kanagawa (Japan); Watanabe, Y. [Science University of Tokyo, Tokyo (Japan)

    1998-04-01

    Described herein are light beam deflectors of thin piezoelectric films, and synthesis, photoconductance and nonlinear optical measurement of light-distributing, transparent zinc oxide, viewed from application of zinc oxide to optical purposes. Supersonic waves, when passing through a transparent medium, leaves compressional waves of strain, causing cyclic changes in refractive index. This phenomenon can be used for diffraction of light. A light beam deflector is one of the examples of using this phenomenon applied to a thin piezoelectric film of zinc oxide. The authors have developed a process to synthesize transparent, polycrystalline zinc oxide of high C-axis orientation. A seed of sintered zinc oxide is placed at the center of an electrical oven, and a substrate in the temperature-gradient zone. The seed evaporates, when heated to around 1200degC, to leave the zinc oxide crystal grains on the substrate, which grow preferentially in the C-axis direction at around 300{mu}m/h. Zinc oxide is known as a compound of anisotropy in properties by crystal orientation, and shows piezoelectric and photoconducting properties. 8 refs., 7 figs.

  13. Mixture formation of direct gasoline injection engine. In cylinder gas sampling using fast response ionization detector; Tonai funsha gasoline engine no kongoki keisei. Kosoku FID ni yoru tonai gas sampling

    Energy Technology Data Exchange (ETDEWEB)

    Yamashita, H.; Marubara, M.; Ota, N.; Kudo, H.; Yamamoto, H. [Mazda Motor Corp., Hiroshima (Japan)

    1997-10-01

    Local mixture concentration near the spark plug of a direct gasoline injection engine was observed by a fast flame ionization detector. To ensure combustion stability and good fuel economy in DISC operation, the swirl ratio and the piston configuration were optimized. Swirl is needed to retain well-vaporized and stable mixture near the spark plug especially in light load. And adequate volume in piston cavity is required for trapping curved fuel spray in it. With these specifications, the fuel economy improvement of 13 to 30 % was realized. 2 refs., 13 figs., 1 tab.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-10-01

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

  15. Problems and technologies of reduction control of dioxins. Part 3. Reduction of dioxins emission using direct melting incineration furnace for municipal and industrial solid wastes; Haikibutsu chokusetsu yoyuro ni yoru daiokishin rui haishutsu yokusei

    Energy Technology Data Exchange (ETDEWEB)

    Iwasaki, M.; Uchida, M. [Chiyoda Chemical Engineering and Construction Co. Ltd., Tokyo (Japan)

    1998-07-01

    Dioxins are deadly toxic substances which are generated accidentally from various kinds of generation sources. City waste incinerators are deemed to be the greatest generation sources of dioxins, and it becomes a serious social problem now. In such a situation, gasification and melting technology of wastes are paid attention as the waste incinerating and treating technology suitable for the reduction of dioxins emission. In this paper, reduction of dioxin emission using a high oxygen concentration type direct melting furnace is introduced as one of the above-mentioned technologies. High oxygen concentration type direct melting furnace is a vertical shaft furnace wherein high concentration oxygen gas separated and refined from the atmosphere by an oxygen producing apparatus such as a pressure swing absorption tower is introduced from the bottom of the furnace. Wastes supplied into the furnace is dried to move the moisture therein in a drying area, and then decomposed into thermal decomposed gas, carbon-rich char, and ash in a thermal decomposition area. The removal rate of dioxins contained in exhaust gas is about 95%. 13 refs., 11 figs.

  16. Exploration of shallow subsurface resistivity structure using a portable TEM system: TEM-FAST prosystem; Kan`igata TEM ho sochi TEM-FAST prosystem ni yoru senbu hiteiko chosa

    Energy Technology Data Exchange (ETDEWEB)

    Miura, Y.; Kumekawa, Y.; Takasugi, S. [GERD Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan)

    1997-05-27

    Discussions were given on effectiveness of the TEM-FAST ProSystem which is a portable TEM system developed recently for use in exploration of shallow subsurface resistivity. The system consists of a loop type antenna, the TEM-FAST as the main equipment, and a host computer, the host computer controlling the entire system. The system acquires transient response data in secondary induced magnetic fields lasting 4 {mu} sec to 1 m sec. The number of data is 5490 stacks in one measurement, and the data acquisition time is about three minutes. Measurements were carried out by using the TEM-FAST in the vicinity of a well, whose results were compared with those of electric logging, and discussions were given on them. Although the electric logging results had no data available for depths shallower than 35 m, the measurement results from the TEM-FAST were found highly harmonious with those of the electric logging. In addition, there were transmission and telephone lines in locations about 10 m away from the well during the measurement, but extremely high data quality was discovered. 6 refs., 7 figs., 1 tab.

  17. Development of the EM tomography system. Part 2. Sensitivity studies of anomalous body by model studies; EM tomography system no kaihatsu. 2. Model kaiseki ni yoru ijotai no kando chosa kekka

    Energy Technology Data Exchange (ETDEWEB)

    Kumekawa, Y.; Miura, Y.; Takasugi, S. [GERD Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan); Arai, E. [Metal Mining Agency of Japan, Tokyo (Japan)

    1997-05-27

    A model analysis was used to investigate sensitivity of a two-dimensional structure on a resistivity anomalous body by using an electromagnetic tomography system. The resistivity model handled a three-dimensional structure. The model was prepared as a pseudo two-dimensional model in which a low resistivity anomalous body with 1 ohm-m was incorporated that has a basic length of 1000 m in the Y-direction in a homogenous medium having 100 ohm-m. As a result of the analysis, the following matters were elucidated: if a low resistivity anomalous body is present in a shallow subsurface, its impact starts appearing from lower frequencies than when the anomalous body exists only at a greater depth; if a high resistivity anomalous body exists, the detection sensitivity is lower than for the low resistivity anomalous body, but the analysis would be possible by using the phase because the phase has made a greater change; the source TxZ shows a change from lower frequencies than for the source TxX, and the amount of change is greater, hence the detection sensitivity on an anomalous body may be said higher with the source TxZ; however, for the anomalous body in shallow subsurface, the source TxX is more effective since it is not subjected to a too great impact at a greater depth. 5 refs., 7 figs.

  18. Physical model experiment for wave field measurements by means of laser Doppler vibrometer. Measurement of three components; Laser Doppler shindokei ni yoru butsuri model jikken. Hado sanseibun no kenshutsu

    Energy Technology Data Exchange (ETDEWEB)

    Nishizawa, O.; Sato, T. [Geological Survey of Japan, Tsukuba (Japan); Lei, X. [DIA Consultant Co. Ltd., Tokyo (Japan)

    1997-05-27

    In this experiment, a beam incident from an oblique direction is reflected by a spherical lens toward the direction of incidence. When the surface of a matter is vibrated by elastic waves, the spherical lens comes into a translation motion that accompanies the vibration. It follows accordingly that the vibration on the surface of the matter may be detected by sensing the spherical lens travelling speed. Three components of the vibration may be determined if beams are focused at one spot from three directions. Detection of the S-wave component by LDV (laser Doppler vibrometer) discloses the complicated wave field in a heterogeneous material, and this physical model experiment may be utilized in various fields of study. For instance, information about problems that may surface in the field work may be collected beforehand in a physical model experiment for developing an S-wave-aided probing method. For the study of seismic wave propagation in a complicated three-dimensional ground structure, a numerical model is not enough, and a physical model experiment will be an effective method to fulfill the purpose. In the monitoring of cracks in a rock, again, not only elastic wave velocity but also waveform information collected from a physical model experiment should be fully utilized. 6 refs., 6 figs.

  19. Detection of shear-wave traveltime delay by using wavelet transform and characterization of an artificial subsurface fracture; Wavelet henkan ni yoru toka S ha denpa jikan henka no koseido kenshutsu to jinko chika kiretsu no seijo hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, K.; Moriya, H.; Asanuma, H.; Niitsuma, H. [Tohoku University, Sendai (Japan)

    1997-05-27

    As characterization of artificial cracks formed underground by using the water pressure fracturing method, experiments have been carried out to detect relationship of pressurization and S-wave propagation time with the polarizing direction dependence. Openings are created when pressure in the vicinity of the artificial cracks increases greater than reopening pressure of micro cracks. Elastic wave velocity decreases in this region because of water in the opened micro cracks. Anisotropy is created in the S-wave propagation velocity due to influence from anisotropic reopening region when the artificial cracks are pressurized, and is separated into two components which polarize orthogonally with each other (micro splitting). Field experiments conducted at the Higashi-hachimantai field were analyzed by using wavelet transform. It was possible to detect the S-wave arrival time at high accuracy, and the arrival of an orthogonally polarized wave was observed in 0.03 to 0.11 ms after the arrival of the S-wave. Possibility was indicated on separation of the two components in the orthogonally polarized wave of the S-wave if the micro splitting is used. If this mechanism is elucidated, it may be possible to extract information on cracking systems (direction of micro crack orientation and crack density). 8 refs., 10 figs.

  20. Estimation of underground structures in the Osaka-Kobe area by array-network observations of microtremors; Bido no array kansoku ni yoru Osaka-Hyogo chiiki no chika kozo no suitei

    Energy Technology Data Exchange (ETDEWEB)

    Okada, H.; Ishikawa, K.; Ling, S. [Hokkaido University, Sapporo (Japan); Sasabe, K. [Ministry of Construction, Tokyo (Japan)

    1997-05-27

    Microtremor observations have been carried out with an objective to estimate underground structures including the foundation depth in the Osaka-Kobe area which has been greatly damaged by the Hyogoken-nanbu earthquake in 1995. Different organizations have made seismic surveys and boring investigations in this area, by which elucidation has been made on the underground structures. The present observations are intended to identify S-wave velocity distribution in a wide area from the ground surface to the foundation, which is difficult to be verified by using conventional surveys and investigations. Methods to detect surface waves which are contained in microtremors include the frequency-wave number method (the F-K method) and the spatial autocorrelation method (the SPAC method). The SPAC method can estimate phase velocities of longer waves for the size of an array than with the F-K method, and is more advantageous in estimating ground structures at greater depths. S-wave velocity structure was estimated down to the foundation rocks existing in depths of about 0.5 to 2.0 km. For estimating the phase velocities in Raleigh waves, the SPAC method and the expanded spatial autocorrelation method were used. The underground structures thus derived showed a good agreement with the results of explorations using other methods. 8 figs., 1 tab.

  1. Fault-related-folding structures and reflection seismic sections. Study by seismic modeling and balanced cross section; Danso ga kaizaisuru shukyoku kozo no keitai to jishin tansa danmen. 2. Seismic modeling oyobi balanced cross section ni yoru study

    Energy Technology Data Exchange (ETDEWEB)

    Tamagawa, T.; Matsuoka, T. [Japan Petroleum Exploration Corp., Tokyo (Japan); Tsukui, R. [Japan National Oil Corp., Tokyo (Japan). Technology Research Center

    1997-05-27

    It occasionally happens that there exists a part where reflection near the thrust is not clearly observed in a thrust zone seismic survey cross section. For the effective interpretation of such an occurrence, the use of geological structures as well as the reflected pattern is effective. When the velocity structures for a fold structure having a listric fault caused anticline (unidirectionally inclined with a backlimb, without a forelimb) and for a fault propagation fold are involved, a wrong interpretation may be made since they look alike in reflection wave pattern despite their difference in geological structure. In the concept of balanced cross section, a check is performed, when the stratum after deformation is recovered to the time of deposition, as to whether the geologic stratum area is conserved without excess or shortage. An excess or shortage occurs if there is an error in the model, and this shows that the fault surface or fold structure is not correctly reflected. Positive application of geological knowledge is required in the processing and interpreting of data from a seismic survey. 6 refs., 6 figs.

  2. Study on the application of digital signal processor (DSP) to adaptive control. 2. Active noise control to noise from a duct; DSP ni yoru tekio seigyo. 2. Duct kaikotan no soon eno active noise control

    Energy Technology Data Exchange (ETDEWEB)

    Kino, N.; Kitagawa, T.; Aoki, K. [Shizuoka Industrial Research Institute of Shizuoka prefecture, Shizuoka (Japan)

    1995-09-01

    Recent developments in signal processing technology, computer and LSI technology, especially DSP technology have made it possible to process sampled and quantized sound signals in real time. So sound field processing technology and sound field control technology have been made rapid progress. Active noise control technology is one of the sound field control technologies. And it can be applied to low frequency noise reduction problems that we couldn`t cope with in usual way. So we developed an experimental device of active noise control. We report how we developed this device and refer to the experimental results about a random frequency noise in this report. 5 refs., 18 figs., 1 tab.

  3. Stability enhancement in a local power system using a multimachine control system taking primary power system fluctuations into consideration; Shukeito doyo wo koryo shita hatsudenki seigyo ni yoru taki rokaru keito anteika seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Otsuka, K.; Ishii, A. [Akita Univ. (Japan)] Morioka, Y. [Kansai Electric Power Co., Inc., Osaka (Japan)

    1997-12-20

    This paper investigates a multimachine control system based on the modern control theory to enhance the stability of a local multimachine power system connected to a large-scale primary power system. Most modern control theory-based designs have been proposed on the assumption of an infinite-scale primary power system, while in most actual power systems fairly large voltage and phase fluctuations are induced by various kinds of system`s faults. The local multimachine control system is then designed so as to be very effective in controlling the disturbances from the primary power system. The design is improved by using no assumption of the infinite-scale primary system. In the system design, moreover, a decentralized multimachine control system is proposed so that the control system for each machine can be designed independently from the others. It is demonstrated by computer simulations that the proposed system is effective and robust in stability enhancement by using an example of local power systems even when some fluctuations in the primary power system exist. 11 refs., 10 figs., 1 tab.

  4. Structural response analysis of very large floating structures in waves using one-dimensional finite element model; Ichijigen yugen yoso model ni yoru choogata futai no harochu kozo oto kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Fujikubo, M.; Yao, T.; Oida, H. [Hiroshima University, Hiroshima (Japan). Faculty of Engineering

    1996-12-31

    Formulation was made on a one-dimensional beam finite element which is effective in analyzing structural response of very large floating structures by modeling them on beams on an elastic foundation. This element allows strict solution of vibration response in the beams on the elastic foundation to be calculated efficiently for a case where mass and rigidity change in the longitudinal direction. This analysis method was used to analyze structural response of a large pontoon-type floating structure to investigate mass in the end part for the structural response and the effect of decay while passing the structure. With a pontoon-type floating structure, reduction in bends and bending stress in the end part of the floating structure is important in designing the structure. Reducing the mass in the end part is effective as a means to avoid resonance in these responses and reduce the responses. Increase in rigidity of a floating structure shifts the peak in quasi-static response to lower frequency side, and reduces response in resonance, hence it is advantageous for improving the response. Since incident waves decay while passing through the floating structure, response in the lower wave side decreases. The peak frequency in the quasi-static response also decreases at the end part of the structure in the upper wave side due to decay in wave force. 7 refs., 11 figs., 1 tab.

  5. Model study on dynamic behavior of a single pile-soil interaction in surface layer. Kogata mokei jikken ni yoru kui-jiban no doteki sogo sayos seijo no kosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Yahata, K. (Kajima Corp., Tokyo (Japan))

    1993-10-31

    An experimental study was made on the dynamic interaction between pile and soil by a small scale model made of silicone rubber. The model consists of models of ground, friction pile, and supporting pile. The vibration experiment was carried out in two ways, i.e., the pile head excitation by an exciter and the excitation by a vibration desk. The input was a steady excitation. The excitation from the exciter was transmitted to the pile head through the rigid rod which was supported horizontally. Although it is difficult to obtain the linear result in the horizontal excitation experiment in a single pile on the real ground, this experiment gave the linear results to be compared with the analytical results. The response of pile was influenced by the dynamic characteristic of the ground. In some cases, the influence was enhanced at the resonance point of the surface ground. The pile length dependence of the horizontal rigidity was not so big. The experimental results quite agreed with the results of the pile and ground interaction which were calculated based on the three-dimensional wave theory. The experiments using exciter and the vibrator clarified the nature of the dynamic interaction. 4 refs., 10 figs.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1993-10-25

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

  7. Measurement of excited oxygen (O2:[sup 1][Delta]g) concentration by spontaneous emission. Hakko kyodo ni yoru reiki sanso ([sup 1][Delta]g) nodo no sokutei

    Energy Technology Data Exchange (ETDEWEB)

    Takahashi, S.; Hasegawa, Y.; Yamashita, I. (Mechanical Engineering Laboratory, Tsukuba (Japan))

    1993-11-25

    The concentration of excited oxygen ([sup 1][Delta]g), which was generated by microwave discharge in a pure oxygen flow, was measured from the intensity of spontaneous emission. The conversion factor to density was determined by spectroscopic analysis of the rotational structure and calibration of the emission intensity using a black-body furnace as light source. Consequently, a good agreement was found between the observed profiles and those calculated from spectroscopic data, and it was illustrated that the absolute concentration can be obtained by coupling band analysis and the calibration method. In addition, even when the concentration was low, it was shown that the excited oxygen concentration can be measured by considering the reflection at the cell wall. The excited oxygen concentration at the microwave discharge cavity was estimated to be around 1% under the pressure ranging from 0.5 torr to 2 torr. Furthermore, the comparison of the profiles calculated at different temperature provided that the band profile can be a good indicator of gas temperature when the signal-to-noise ratio is high. 9 refs., 10 figs., 2 tabs.

  8. Low temperature formation of ferroelectric PbTiO3 films by laser ablation with 2nd laser irradiation; Reiki hikari laser heiyo laser ablation ho ni yoru kyoyudentai PbTiO3 usumaku no teion keisei

    Energy Technology Data Exchange (ETDEWEB)

    Tabata, H.; Kawai, T. [Osaka University, Osaka (Japan)

    1997-08-20

    The unique advantage of the pulsed laser deposition is its ability to produce highly oriented stoichiometric films at a low substrate temperature. Ferroelectric PbTiO3 thin films have been formed using 2nd laser assisted laser ablaion technique at low temperature, i.e., 350degC, on Sr7iO3 single-crystal substrates and Pt/MgO electrodes. The second laser irradiation at the substrate surface is quite effective for crystallization of the films at low substrate temperature below 400degC. The suitable energy density (fluence) of the irradiation laser is in the range of 30-100 mJ/cm{sup 2}. X-ray diffraction patterns of PbTiO3 thin films show c-axis orientation, with a rocking angle of 1.0 - 0.5deg. These films exhibit ferroelectric hysteresis loop. The dielectric constant and remanent polalyzation of the PbTiO3 films are in the range of 120-150 and 60-80 {mu}C/cm{sup 2}, respectively. 31 refs., 10 figs., 1 tab.

  9. Effect of surface irradiation during the photo-CVD deposition of a-Si:H thin films. Hikari CVD ho ni yoru amorphous silicon sakuseiji no kiban hikari reiki koka

    Energy Technology Data Exchange (ETDEWEB)

    Tasaka, K.; Doering, H.; Hashimoto, K.; Fujishima, A. (The University of Tokyo, Tokyo (Japan))

    1990-12-06

    This paper shows the impact of the irradiation from an additional light source during the deposition of hydrogenated amorphous silicon by photo-CVD deposition. Using a mercury sensitized photo-CVD process from Disilan (Si {sub 2} H {sub 6}) and hydrogen, silicon was deposited. A 40W low pressure mercury lamp was applied as the light source. A portion of the substrate was in addition irradiated using an Xg-He lamp through a thermal filter. Irradiation of the substrate using only Xg-He lamp produced no deposition, since this light has a wavelength which is too long to produce the SiH {sub 3}-radicals needed for Si deposition. The additional Xg-He light source was discovered to cause an increased thickness of deposited a-Si:H film and a transmission of the band structure. The reasons of these are considered that the influence of irradiation is not limited to film thickness, but that irradiation also impacts the composition of the a-Si:H film so as to cause a reduction in the hydrogen content. 10 figs., 1 tab.

  10. Characteristics of the fluorescent substances in the Yodo River system by three-dimensional excitation emission matrix spectroscopy; Sanjigen reiki/keiko kodoho ni yoru yodogawa suikeichu no keiko busshitsu no tokucho

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Y.; Nakaguchi, Y.; Hiraki, K.; Kudo, M.; Kimura, M.; Nagao, S. [Japan Atomic Energy Research Inst., Tokyo (Japan)

    1998-08-01

    Organic substances in the river water in Yodo River system were analyzed by three-dimensional excitation emission matrix spectroscopy. Fluorescent substances were taken as an index of organic substances. The amount of fluorescent substances varied widely depending on the environment of river basin. It is suggested that the fluorescent substances are composed of organic substances which is not directly originated from biological activity. It is suggested that the fluorescent substances were produced by leaching of river bottom sediment. The fluorescent substances in Yodo River system consists of fulvic acid-like substances and protein. The analysis of fluorescent substances in river water by three-dimensional excitation emission matrix spectroscopy can be useful means for estimation of variation and origin of fluorescent substances. For better understanding of features of fluorescent substances in the surface water into which various kinds of substances enter, it is necessary to determine the exact sampling points based on the consideration of different sources and to make a database of peak positions for identification of fluorescent substances from fluorescence intensity peak. 29 refs., 3 figs., 2 tabs.

  11. Non-contact estimation of the bond quality in soldered thin laminate by laser generated lamb waves; Laser reiki ramuha ni yoru handazuke sekisohaku no setsugo seijo no hisesshoku hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Kasama, H.; Futatsugi, T.; Cho, H.; Takemoto, M. [Aoyama-Gakuin University, Tokyo (Japan). Faculty of Science and Engineering

    1998-03-20

    The bond quality of a solder-bonded copper laminated plate was modeled into rigid contact (rc) and slip contact (sc) to calculate the velocity dispersion of lamb waves. The velocity dispersion of laser generated lamb waves was measured, and the bond quality or the thickness of a solder layer was evaluated by non-contact. In the model whose bond surface is rc, the velocity dispersion of lamb waves can be calculated under conditions where the stress and displacement in an interface are continuous. In the model whose bond surface is sc, it can be calculated under conditions where an interface slips freely. Weak bond indicates the velocity dispersion between rc and sc. In this model, the velocity dispersion can also be calculated by a change in the thickness of a solder layer and used for quantitative evaluation of a bond interface. A three-layer solder bond manufactured for trial could be evaluated from the velocity dispersion of laser lamb waves. At the room temperature, the change in bond quality near the solder melting point of bond laminate that was judged as rc was investigated. When the solidus temperature is exceeded, the amplitude of lamb waves and the velocity dispersion changed largely. The amplitude of lamb waves increases as the liquid phase ratio increases. The bond quality near the solder melting point can be evaluated using lamb waves. 9 refs., 10 figs., 2 tabs.

  12. Amplification of picosecond pulse by electron-beam pumped KrF laser amplifiers. Denshi beam reiki KrF laser zofukuki ni yoru piko byo pulse no zofuku

    Energy Technology Data Exchange (ETDEWEB)

    Okuda, I.; Tomie, T.; Owadano, Y.; Yano, M. (Electrotechnical Laboratory, Tsukuba (Japan))

    1991-08-20

    Experiments on the amplification of a picosecond pulse by electron-beam pumped KrF laser amplifiers were carried out for the purpose of its application to the field such as excitation light source for soft X-ray laser which requires large energy besides peak power. The picosecond pulse was amplified by a discharge pumped KrF amplifier and two electron-beam pumped KrF amplifiers(at the middle stage and the final stage). The energy of 4J, which was the largest energy for short pulse excimer laser so far, was obtained by these devices. About 90% of the window area of the final amplifier with 29cm diameter was filled by the input beam, and energy density of the picosecond beam reached 3.9 times saturation energy density. Measured energy of amplified spontaneous emission(ASE) showed good agreement with the theoretically estimated value. Most of ASE was derived from the discharge pumped laser as the first amplifier. As for the focused power density, the power density ratio of the picosecond pulse to ASE was estimated to be as large as 10{sup 5}. 11 refs., 4 figs.

  13. Excitation of tsunami by a pure strike-slip earthquake. ; Izu Oshima kinkai earthquake tsunami on Feb. 20, 1990. Yokozure danso jishin ni yoru tsunami no reiki. ; 1990 nen 2 gatsu 20 nichi Izu Oshima kinkai jishin tsunami

    Energy Technology Data Exchange (ETDEWEB)

    Abe, K. (Nippon Dental University, Tokyo (Japan). Niigata Junior College); Okada, M. (Meteorological Research Institute, Tsukuba (Japan))

    1993-06-24

    A numerical experiment was performed to reproduce the tsunami from the Izu-Oshima Kinkai Earthquake which occurred on February 20, 1990, using a tsunami excited by a pure strike-slip fault. An existence of a vertical fault with a length of 15 km and a width of 12 km was hypothesized in the south-north direction on the ocean bottom around the focal region. Then, a tsunami was assumed to have been excited when the fault was given a side-slip movement to create discrepancies of 1 m in the fault. Water level change for one hour after onset of the tsunami was calculated in one-second interval in each unit square with a side length of 1 km over an ocean area of 200 km from east to west and 150 km from north to south centering on the wave source. The results obtained from the calculation were harmonious with tsunami waveforms observed at five stations in the subject region and their spectral analytic results. Reproduced were the two predominant frequencies commonly observed at more than two stations, and difference in predominant cycles that appear according to azimuths of the observation points to the epicenter. These facts endorse the reasonability of the above hypothesis. 9 refs., 11 figs.

  14. Measurements of ultrasonic waves by means of laser Doppler velocimeter and an experimental study of elastic wave propagation in inhomogeneous media; Laser doppler sokudokei ni yoru choonpa keisoku to ganseki wo mochiita fukinshitsu baishitsu no hado denpa model jikken

    Energy Technology Data Exchange (ETDEWEB)

    Nishizawa, O.; Sato, T. [Geological Survey of Japan, Tsukuba (Japan); Lei, X. [Dia Consultants Company, Tokyo (Japan)

    1996-05-01

    In the study of seismic wave propagation, a model experimenting technique has been developed using a laser Doppler velocimeter (LDV) as the sensor. This technique, not dependent on conventional piezoelectric devices, only irradiates the specimen with laser to measure the velocity amplitude on the target surface, eliminating the need for close contact between the specimen and sensor. In the experiment, elastic penetration waves with their noise levels approximately 0.05mm/s were observed upon application of vibration of 10{sup 6}-10{sup 5}Hz. The specimen was stainless steel or rock, and waveforms caught by the LDV and piezoelectric device were compared. As the result, it was found that the LDV is a powerful tool for effectively explaining elastic wave propagation in inhomogeneous media. The piezoelectric device fails to reproduce accurately the waves to follow the initial one while the LDV detect the velocity amplitude on the specimen surface in a wide frequency range encouraging the discussion over the quantification of observed waveforms. 10 refs., 7 figs.

  15. Imaging of active faults with the step continuous wave radar system. In case of Senzan faults in Awaji-island; Step shiki renzokuha chichu radar tansaho ni yoru katsudanso no imaging.

    Energy Technology Data Exchange (ETDEWEB)

    Koga, K.; Hara, H.; Kasai, H.; Ito, M. [Kawasaki Geological Engineering Co. Ltd., Tokyo (Japan); Yoshioka, T. [Geological Survey of Japan, Tsukuba (Japan)

    1996-05-01

    Validity of continuous wave radar exploration was verified when the said technique and some other probing methods were investigated at the Senzan Faults in Awaji Island. The signal transmitted by a continuous wave exploration system is a collection of sinusoidal waves different in frequency, and the frequencies are so controlled that they form steps relative to the sweep time. Exploration into great depths is carried out by prolonging the transmission signal sweep time, where high resolution is maintained by use of widened transmission frequency bandwidths. On-site measurements were made using a triplicated multichannel method, and electromagnetic wave propagation velocities required for depth conversion of the reflected cross section were determined in compliance with the wide angle method. On the basis of the analytical cross section using the profiles obtained by continuous radar reflection exploration conducted from the ground surface, interpretation was made of the geological structure. The presence and position and the geological development of the Senzan Faults were identified by the study of discontinuities in reflective structures such as the strata. 4 refs., 5 figs., 2 tabs.

  16. Stress estimation around the survey wells in Hanshin-Awaji area by means of AE/DR and DSCA experiments; AE/DR ho to DSCA ho ni yoru Hanshin Awaji chiiki chosa kui shuhen no chikaku oryoku sokutei

    Energy Technology Data Exchange (ETDEWEB)

    Ito, H.; Kuwahara, Y.; Nishizawa, O. [Geological Survey of Japan, Tsukuba (Japan); Yamamoto, K. [Tohoku University, Sendai (Japan). Faculty of Science; Sano, O. [Yamaguchi University, Yamaguchi (Japan). Faculty of Engineering; Yokoyama, T.; Kudo, R. [OYO Corp., Tokyo (Japan); Xue, Z. [Kiso-Jiban Consultants Co. Ltd., Tokyo (Japan)

    1996-05-01

    A total of 5 wells were excavated in the Hanshin-Awaji area (Ikeda, Takarazuka, Tarumi, Hirabayashi and Ikunami) to collect the core samples, which were analyzed by the AE/DR and DSCA methods to determine crustal stresses. For the AE/DR analysis, the core sample was cut in the vertical direction, and in the horizontal direction at intervals of 45{degree}. The sample of unknown orientation was provided with a datum line common for both methods, to compare the results by these methods. A load was applied to the sample, provided with an AE sensor and strain gauge on the sides, in the longitudinal direction. For the DSCA analysis, the core sample was cut into a cube having a side length of 33mm, with a pair of planes directed in parallel to the datum line. A total of 18 strain gauges, 10mm in gauge length, were attached to the cube. The AE/DR analysis gave the maximum and minimum principal stresses in the horizontal plane and stresses in the vertical direction, whereas the DSCA the maximum, intermediate and minimum principal stresses. 3 refs., 7 figs.

  17. Groundwater pollution by arsenic and its effect on health. Present state of groundwater pollution by arsenic and its environmental quality standard; Hiso ni yoru chikasui osen to kenko eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakajima, N.

    1997-07-10

    Resorted the official data of groundwater inspections in Japan for fiscal 1995 in accordance with the new environmental quality standard (revised in 1997), the largest number of samples that exceeded the standard values among 23 inspection items of substances was of arsenic (As: standard 0.01mg/l). In this case, 49 samples out of total 2720 samples exceeded the standard values due to As (excess ratio 1.8%). The next substances having high excess ratio were four organic chlorine compounds which are widely used as detergent (excess ratio 0.6-0.1%), and next to these was lead (0.1%). About the other substances, excess was not found. The birthplaces of the above 48 samples were as follows: Fukuoka prefecture (12 samples), Chiba (19), Saitama (7), Gunma (4), Miyagi (4), Niigata (3), Hokkaido (2), Yamagata (1, the followings were also the same), Tokyo, Aichi, Osaka, Hyogo, Tottori. Recently, arsenic poisoning in Bangladesh has been reported, and the cause of it is estimated as excessive pumping up of irrigation water. In Japan, future strengthening of surveillance is expected. 2 figs., 5 tabs.

  18. Large-scale vertical shaft excavation using super-open caisson system. Construction of Tamasato vertical shaft (Ishioka vertical shaft No.5); Jidoka open caisson koho ni yoru daikibo tatekui no kussaku. Tamasato tateko (Ishioka dai5 tateko) shinsetsu koji

    Energy Technology Data Exchange (ETDEWEB)

    Tanimura, D. [Ministry of Construction, Tokyo (Japan); Ueda, J.; Tani, Y. [Konoike Construction Co. Ltd., Osaka (Japan)

    1998-07-25

    The above-named work is part of the Ministry of Construction`s water conveyance system construction work for Lake Kasumigaura. The super-open caisson system (SOCS) is a method developed from the conventional open caisson method by enlarging the construction area, improving construction accuracy, enhancing rationalization, etc. This report discusses the first application of the new system. SOCS comprises an automatic excavation/soil-lifting system, consisting of a back-hoe type automatic submarine excavator and an automatic soil-lifter of the bridge crane type, and an automatic settlement management system that automatically controls a press-in jack on the real-time basis in compliance with information from various sensors installed on the driven body of the press-in type open caisson. In view of the results of the execution of this construction work using the new SOCS system, it is acknowledged that the automatic excavation/soil-lifting system is accurate enough to manage caisson settlement and that its handling of hard sandy soil is so efficient as to satisfy the designed performance specifications. 15 figs., 3 tabs.

  19. Crude unit automatic crude switch control using. Multivariable predictive control technology; Joatsu joryu sochi no gen`yu kirikae jidoka. Tahensu seigyo to kisetsu seigyo system ni yoru saiteki unten

    Energy Technology Data Exchange (ETDEWEB)

    Ageishi, N. [Yamatake-Honeywell Co. Ltd., Tokyo (Japan)

    1998-06-01

    This paper describes automatic crude oil switching control for normal pressure distilling equipment used in oil refineries. Crude oil has been switched several times a week, where an operator has made adjustment manually at each time of the switching. Operation frequency was high, much labor was required, and loss was produced due to excess quality. The present attempt has realized an optimum operation by introducing multivariable crude oil switching technology and combining it with the existing advanced control technology. Because the realized technology automatically detects the crude oil switching which does not require input of yield data of crude oil to be processed based on a production plan, there is no need of TBP slope estimation, and control mode switching by an operator based thereon, or feed-forward by using data of crude oil nature. The technology is also capable of dealing with crude oil switching having large yield variation. Operating conditions are adjusted automatically based on the nature estimation, hence no manual adjustment is required. Loss due to excess quality can be minimized. Time to adjust the switching can be decreased. Effectiveness of this system was verified in a wide range from normal operation to unsteady state in crude oil switching. 3 refs., 6 figs., 2 tabs.

  20. Shaking table test on three-dimensional scaled models of reinforced concrete high-rise frame structure with wall columns. Tekkin concrete koso kabeshiki ramen kozobutsu no shukusho rittai mokei ni yoru shindo jikken

    Energy Technology Data Exchange (ETDEWEB)

    Hosoya, H.; Abe, I. (Okumura Corp., Osaka (Japan)); Kitagawa, Y. (Ministry of Construction, Tokyo (Japan)); Okada, T. (Univ. of Tokyo, Tokyo (Japan). Inst. of Industrial Science)

    1991-07-01

    In order to examine earthquake-resistance of structures experimentally, member tests and full-scale three-dimensional frame tests are conducted with good results. However, the three-dimensional effect is hardly obtainable through member tests and as for the full-scale three-dimensional frame tests, the application of statical unidirectional force are made in many cases, and force application tests are conducted in the external force condition somewhat different from the earthquake excitation which is directional in three dimensions. In this study, unidirectional as well as two-directional excitations were made to two three-dimensional models, each of which was scaled down to one sevenths of an eleven story reinforced concrete high-rise frame structure with wall columns (HFW) consisting of micro-concrete and scaled-down steel bars using a three-dimensional shaking table with six degrees of freedom which could reconstitute the real earthquake motions and differences of shaking properties and destruction properties were studied. In addition, a study was made about the effect on the bearing strength and deformation of orthogonal members by comparing the results of excitation experiments with the results of elasto-plastic response analyses which took into account the effect of the orthogonal members (cooperative width). 4 refs, 26 figs., 14 tabs.

  1. FY1995 development of a clean CVD process by evaluation and control of gas phase nucleation phenomena; 1995 nendo kisokaku seisei gensho no hyoka to seigyo ni yoru clean CVD process no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The purpose of this study is to develop a high-rate and clean chemical vapor deposition (CVD) process as a breakthrough technique to overcome the problems that particles generated in the gas phase during CVD process for preparation of functional thin films cause reduced product yield and deterioration of the films. In the CVD process proposed here, reactant gas and generated particles are electrically charged to control the motion of them with an electric field. In this study, gas-phase nucleation phenomena are evaluated both theoretically and experimentally. A high-rate, ionized CVD method is first developed, in which reactant gas and generated particles are charged with negative ions generated from a radioisotope source and the UV/photoelectron method, and the motion of the charged gas and particles is controlled with an electric field. Charging and transport processes of fine particles are then investigated experimentally and theoretically to develop a clean CVD method in which generated particles are removed with the electric forces. As a result, quantitative evaluation of the charging and transport process was made possible. We also developed devices for measuring the size distribution and concentration of fine particles in low pressure gas such as those found in plasma CVD processes. In addition, numerical simulation and experiments in this study for a TEOS/O{sub 3} CVD process to prepare thin films could determine reaction rates which have not been known so far and give information on selecting good operation conditions for the process. (NEDO)

  2. Development of new technologies for high quality thin film and its application to energy engineering; Hikari seigyo to sokudo senbetsu ni yoru chokinshitsu usumaku no seisaku to energy bun`ya eno tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Hijikata, K.; Inoue, T.; Nagasaki, T.; Suzuki, Y.; Sato, I. [Tokyo Institute of Technology, Tokyo (Japan); Nakabeppu, O. [The University of Tokyo, Tokyo (Japan). Faculty of Engineering

    1997-02-01

    This paper describes laser irradiation and velocity selective deposition experiments for fabricating high quality thin films. For the formation of Ag thin film by vacuum deposition method, YAG laser was irradiated to atoms or clusters parallel or perpendicular to the NaCl single crystal substrate, to deposit them on the substrate. For another experiment, Ag atoms selected in the given velocity were deposited on the (001) NaCl substrate by passing the molecular beam through the velocity selector. When laser was not irradiated, the thin film showed a random structure. Epitaxial growth was accelerated by the laser irradiation. When the selective velocity was set in 353 m/s at the constant intensity of molecular beam, the diffraction pattern of the thin film showed net pattern. When the selective velocity was set in 529 m/s, a structure in which ring pattern was overlapped on the net pattern was obtained. 2 figs.

  3. Study of the development of high resolution sub-surface fluid monitoring system using Accurately Controlled Routine Operated Seismic Sources (ACROSS); Seimitsu seigyo shingen ni yoru chika ryutai koseido monitoring no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kumazawa, M.; Ogawa, K.; Fujii, N.; Yamaoka, K.; Kumagai, H.; Takei, Y. [Nagoya University, Nagoya (Japan). Faculty of Science; Ishihara, K.; Nakaya, m. [New Energy and Industrial Technology Development Organization, Tokyo, (Japan)

    1997-02-01

    Fourier seismology capable of determining quantities related to elastic wave velocity dispersibility and non-elastic damping is under development, and studies are under way for the development of a sub-surface probing technology utilizing this seismology. It is deemed that the above-said quantities are related to the occurrence of earthquakes, behavior of sub-surface water, and migration of magma. In this method, precisely controlled sinusoidal waves are radiated and the received spectral data is subjected to cepstrum analysis, advantageous over other methods in that it achieves a high S/N ratio in a non-destructive way, facilitates deep structure analysis, and capable of monitoring changes with the elapse of time in such a structure. A newly-developed high-mobility transportable quake generator is described, which covers a wider frequency range and aims at the short-distance exploration of sub-surface conditions. Important components of the quake generator include an eccentric mass bearing capable of dealing with high-speed rotation enabling high frequency oscillation, variable mechanism for the primary moment of inertia, exciter and ground surface coupler allowing operations on a soft ground, and torque cancelling mechanism for the excitation of SH waves only. 3 figs.

  4. FY1995 study on high speed manipulation of photons and electrons by nanostructures for photonic devices of next generation; 1995 nendo handotai nano kozo ni yoru chokosoku hikari denshi seigyo to jisedai hikari device no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    In this project, we manipulate interaction between photons and electrons in semiconductor nanostructures to study fundamental understanding of electron-photon interaction in ultra-small space and Ultrafast time domain. In addition, on the basis of these results, we explore the optoelectronics nanostructure devices of the next generation. In this research project, we developed new techniques for fabricating quantum dot structures. First, quantum dots of 10nm were grown in two-dimensional V-grooved structures which were formed on SiO{sub 2} patterned substrates by MOCVD. In the same V-grooves, vertical quantum wires were also formed. As the second new technique, we developed self-assembling growth technique for the quantum dots utilizing Spinodal phase separation. In order to investigate the quantum dots using nano-scale characterization technique, we developed low-temperature scanning near-filed optical microscope. Luminescence from as single quantum dot and a single quantum wire were obtained. In addition, luminescence from a single quantum dot through tunneling current excitation by STM was also successfully obtained. Furthermore, micro-photoluminescence measurement achieved time and spatially resolved photoluminescence from a single quantum dot. This micro-photoluminescence also revealed electron dynamics in mesoscopic structures and point contact structures through carrier drag effect. Finally we have succeeded in fabricating vertical microcavity quantum dot lasers by MOCVD and obtained picosecond pulses form the devices. (NEDO)

  5. Drag and lift induced by the flow of viscoelastic fluids past a minute cylinder near a wall; Hekimen kinbo no bisho enchu wo sugiru nendansei ryutai no nagare ni yoru koryoku to yoryoku

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, H.; Hasegawa, T.; Narumi, T. [Niigata University, Niigata (Japan). Faculty of Engineering; Tamano, K. [Mitsubishi Electric Corp., Tokyo (Japan)

    1995-02-25

    In detergent engineering and polymer processing, it is important to study the force exerted on an obstacle placed near a wall. In the present study, we numerically analyze the flow of viscoelastic fluids past a minute cylinder which is set at or near an inside wall of a two-dimensional channel. The upper convected Maxwell model and the finite-element method are used as the constitutive equation and the numerical method, respectively. Drag and lift of the cylinder are calculated for low Reynolds numbers (Re) and various Weissenberg numbers (Wi) of positive and negative values. Drag coefficient (C{sub D}) slightly changes with Wi. Lift coefficient (C{sub L}) monotonously decreases with increasing Wi irrespective of the sign of Wi. C{sub L} is greatly changed with Wi and is more sensitive to the elasticity of the fluid than C{sub D}. C{sub D} and C{sub L} decrease as the cylinder is separated from the wall. 11 refs., 12 figs.

  6. Numerical simulation of viscoelastic flow due to rotating disc enclosed in a cylindrical casing with large axial clearance; Kaiten enban ni yoru nendansei ryutai no yokinai nagare no suchi simulation (jikuhoko clearance ga hiroi baai)

    Energy Technology Data Exchange (ETDEWEB)

    Ito, M. [Nagoya Institute of Technology, Nagoya (Japan). Faculty of Engineering; Moroi, T. [Toyoda Automatic Loom Works, Ltd., Aichi (Japan); Toda, H. [Toray Industries, Inc., Tokyo (Japan)

    1998-05-25

    Numerical simulations by a finite-difference method have been made for a viscoelastic flow due to a rotating disc enclosed in a cylindrical casing with large axial clearance. The Giesekus model with a single relaxation time was applied as a constitutive equation. We could simulate some typical secondary flow patterns for viscoelastic fluids which were different from Newtonian fluids; e.g., a secondary flow of which circulation direction at very low Reynolds number is reversed compared with that for a Newtonian fluid and a double-cell flow structure which Escudier et. all observed at relatively high Reynolds number. We show that the double-cell flow structure relates to nonlinear terms of the constitutive equation. The secondary flow patterns are characterized by the elasticity number (=Weissenberg number/Reynolds number) from low to high Reynolds numbers. 16 refs., 14 figs., 1 tab.

  7. Viscoelastic flow due to a rotating disc enclosed in a cylindrical casing. Numerical simulation and experiment; Kaiten enban ni yoru nendansei ryutai no yokinai nagare. Suchi simulation to jikken

    Energy Technology Data Exchange (ETDEWEB)

    Moroi, T. [Toyoda Automatic Loom Works, Ltd., Aichi (Japan); Ito, M.; Fujita, K. [Nagoya Institue of Technology, Nagoya (Japan)

    1999-11-25

    Numerical simulations by a finite-difference method have been made for a viscoelastic flow due to a rotating disc enclosed in a cylindrical casing with relatively large axial clearance. The Giesekus model, modified Giesekus modal and Phan Thien-Tanner model were applied as the constitutive equations. Using particle tracking velocimetry (PTV), the effects of rheological properties on the distribution of the velocity component V{sub {theta}} and the secondary flow were clarified. By comparing the experimental results with the numerical simulations the validity of the respective viscoelastic fluid models were examined. The secondary flow patters observed by flow visualizations were characterized by the elasticity number (= Weissenberg number/Reynolds number). It was confirmed experimentally that near the rotating axis there was a place where the tangential velocity component was negative for the cases of 0.3 wt% and 1 wt% polyacrylamide aqueous solutions. (author)

  8. Analog integrated circuit for micro-gyro interface realized by multi-chip service in Japan; Multi chip service ni yoru micro gyro interface shuseki kairo no sekkei to shisaku

    Energy Technology Data Exchange (ETDEWEB)

    Maenaka, K.; Fujita, T.; Okamoto, K.; Maeda, M. [Himeji Institute of Technology, Hyogo (Japan)

    1998-10-01

    This paper deals with an analog integrated circuit for micro-machined gyroscopes with capacitive output. The Integrated circuit was fabricated as a part of the first project from the `Micromachining Multi-Chip Service Cooperative Re-search Committee` organized by The Institute of Electrical Engineers Japan. This multi-chip service project offers a master slice chip with an equivalent of 9 blocks of operational amplifier circuits. Our integrated circuit includes a modulator, demodulator and synchronous rectifier for detecting small changes in the capacitance of a silicon gyroscope. In the paper, the experimental results of fabricated samples will be described. 13 refs., 15 figs.

  9. Trend survey of the global environment adaptation type industry technology. Chikyu kankyo tekiogata sangyo gijutsu doko chosa. ; Shizen energy ni yoru CO2 global recycle system no kanosei-chosa

    Energy Technology Data Exchange (ETDEWEB)

    1992-03-01

    The paper studies a global CO2 recycling system which combines utilization of natural energy and CO2 recovered from combustion of fossil fuel. In the model, CO2 recovered at the place of energy demand is transported to the place where energy is produced, and from the CO2 fuels are synthesized by use of solar energy and transported to the place of energy demand. Facilities worth a large amount of money are required to transmit electric power generated by the photovoltaic power generation in the desert to the fuel synthesizing plant. Therefore, production of electrolytic hydrogen by the on-site power generation and transport by pipe may be considered. As a synthetic fuel being sent back by ocean transport, methanol is considered, and synthetic methane (LNG) can also be a candidate. CO2 is recovered as liquid carbon dioxide. Possibility of CO2 recycling is dependent on development of the desert solar base, as well as depletion of fossil fuel and price increase, CO2 penalty. It has still been difficult to say which of the fuel synthesis, CO2 tanker or securing of the solar base becomes a bottleneck. Entry of recycling fuels to the market will be possible in proportion to restrictions on fossil fuels, and evaluation of the system depends almost on the rate of energy arriving from the energy-producing region. 112 refs., 70 figs. 36 tabs.

  10. Entrapment of water soluble material into biodegradable microcapsule prepared by solvent evaporation; (W/O/W) fukugo emulsion no ekichu kansoho ni yoru seibunkaisei microcapsule eno suiyosei shin busshitsu no naiho tokusei

    Energy Technology Data Exchange (ETDEWEB)

    Kiyoyama, S. [Miyakonojo National University, Miyazaki (Japan); Shiomori, K.; Kawano, Y. [Miyazaki University, Miyazaki (Japan); Hatate, Y. [Kagoshima University, Kagoshima (Japan)

    1998-09-05

    Preparation of biodegradable microcapsule using a poly lactic acid as wall material was performed by (W/O/W) emulsion solvent evaporation method. Fractional entrapment of the core material and the average diameter of the microcapsule are independent of the composition of the inner aqueous phase, such as salt concentration, pH and viscosity. On the other hand, by changing the salt concentration of the outer aqueous phase and the hold up of dispersion phase in the (W/O) emulsion, it is possible to increase the fractional entrapment of the core material with the increase in (W/O/W) emulsion stability and amount of wall material. The entmpment effect is controlled by preparation conditions. 9 refs., 9 figs.

  11. Studies on biodegradation and rotational use of pesticides. 2. Preparation of control release microcapsules using a mechanochemical procedure; Noyaku no biseibutsu bunkai to shiyo rotation no kenkyu. 2. Mechanochemical ho ni yoru johosei microcapsule no sakusei

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, Y.; Totsuka, Y. [Shizuoka Industrial Research Institute of Shizuoka prefecture, Shizuoka (Japan)

    1995-09-01

    For the purpose of giving a release control of effective constituents, microcapsulations of pesticide and fish culture feed were respectively prepared by mechanochemical procedure. This technique is one of the surface modification of powder using a high speed impact method, large particles are coated by small ones of PMMA, Wax and so on. The results were as follows; (1) The characteristics of microcapsules were influenced by operate conditions such as size of particles, their blend rates, rotation rates of rotor and reaction time in the apparatus. (2) Capsulations of Simazine powder were prepared by coating 00 PMMA and Wax. The obtained capsules showed a effective release of Simazine. (3) Capsulation of fish culture feed powder was good effect to prevent the equate of water-soluble Vitamin, but a little mechanical break of the powder was observed. 10 refs., 4 figs., 2 tabs.

  12. Effective entrapment of protein into polylactide microcapsule by solvent evaporation of W/O/W emulsion; W/O/W emarushon no ekichu kansoho ni yoru pori nyusan maikurokapuseru eno tanpakushitsu no naiho seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Shiomori, K.; Kawano, Y. [Miyazaki University, Miyazaki (Japan). Dept. of Applied Chemistry; Kiyoyama, S. [Miyakonojo National College of Technology, Miyazaki (Japan). Dept. of Chemical Science and Engineering; Yoshizawa, H. [Okayama University, Okayama (Japan). Dept. of Environmental Chemistry and Materials; Uemura, Y.; Hatate, Y. [Kagoshima University, Kagoshima (Japan). Dept. of Applied Chemistry and Chemical Engineering

    2000-01-10

    Entrapment of bovine serum albumin into microcapsule using polylactic acid as a wall material was carried out by solvent evaporation of a W/O/W emulsion prepared by a two-step emulsification method. Effects of the conditions in the first step emulsification, which gave a W/O emulsion, and the concentrations of additives in the inner and outer aqueous phases on the entrapment efficiency and the morphology of the microcapsule are discussed. The entrapment efficiency of albumin decreases with increasing in the hold up of dispersion phase in the first step W/O emulsion preparation, and the concentration of additives in the inner aqueous phase. On the other hand, by ultrasonic treatment for W/O emulsion and an increase in the concentration of additives in the outer aqueous phase, entrapment efficiency of the protein increases. Permeation of water from the outer in to the inner aqueous phase by osmotic pressure difference, which causes the coalescence of the inner aqueous phase droplets and a decrease in the capsule wall thickness, decreases the entrapment efficiency. By considering these factors, almost all the amount of albumin dissolved in the inner aqueous phase can be entrapped in the capsule, and it is possible to control the entrapment of water soluble core materials in the preparation of microcapsules by the solvent evaporation method. (author)

  13. Enhancement of hemolytic and catecholamine releasing activities of mastoparan by the dendrimeric formation; Masutoparan bunshi no jujoka ni yoru sekkekyu yoketsu sayo to katekoru amin hoshutsu sayo no kokasseika

    Energy Technology Data Exchange (ETDEWEB)

    Kurita, Takashi; Kosemura, Yoshiko; Ito, Hisashi [Aoyama Gakuin University, Tokyo (Japan). Department of Chemistry; Kumakura, Konosuke [Sophia University, Tokyo (Japan). Life Science Institute; Kasai, Hisataka [Tokyo Metropolitan University of Health Sciences, Tokyo (Japan)

    1999-08-10

    As a trial to enhance activity of bioactive peptide, the dendrimeric formation of mastoparan (MP), a wasp venom toxic peptide, was carried out. We synthesized dendrimeric MPs consisting of 2,4 and 8 MP molecules formed on a branching lysine-core, and examined the hemolytic and catecholamine releasing activities and the circular dichroism. The activities of dendrimeric MPs were higher than that of MP and the {alpha}-helical contents increased with the increase of the number of branches in the dendrimers. The most potent dendrimer in hemolytic activity, approximately 8000 times as active as MP, was octameric MP which took 35 % {alpha}-helical content even in an aqueous buffer. Our results indicated that the dendrimeric formation of an amphipathic peptide should be a useful way to obtain highly active peptide as shown already in immunogenicity. (author)

  14. Hydrodynamic analysis of a ducted propeller with stator in steady flow using a surface panel method; Koho stator tsuki duct propeller no panel ho ni yoru tandoku tokusei keisan

    Energy Technology Data Exchange (ETDEWEB)

    Kawakita, C.; Hoshino, T. [Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)

    1998-09-04

    By fitting stator vanes behind a ducted propeller in order to improve the propeller efficiency, energy loss of rotational flow in the slipstream of the ducted propeller would be reduced. This paper shows a surface panel method to analyze the open-water characteristics of a ducted propeller with stator operating in axisymmetric uniform flow. The present method solves the steady problem between an impeller, a duct and a stator in an iterative manner taking account of each circumferentially averaged induced velocity. In order to verify the efficiency improvement for the stator designed by the present method and the calculation accuracy, the open water tests have been carried out. The open-water characteristics of a ducted propeller with stator calculated by the present method showed a better agreement with experimental data. The advantage of the designed stator for the ducted propeller was two percents up of the propeller efficiency at moderately load condition. 6 refs., 11 figs., 1 tab.

  15. Estimation of real ship propelling performance by the surface velocity lattice method using model ship flow field data; Mokeisen ryujo data wo mochiita hyomen uzu koshiho ni yoru jissen suishin seino no suitei

    Energy Technology Data Exchange (ETDEWEB)

    Kai, H.; Ikehata, M.; Sakai, S. [Yokohama National University, Yokohama (Japan). Faculty of Engineering

    1997-10-01

    This is basically a technique wherein the wing element method is replaced by a surface vortex lattice method. A horseshoe vortex of unknown intensity and source surface of known intensity are distributed on the wing surface and, under conditions that the fluid will not cross the boundary, the intensity of horseshoe vortex circulation is calculated for the solution of the fluid field. For the simulation of a real ship in navigation, the required propeller revolution thrust is determined using the real ship resistance value and real ship thrust reduction factor estimated from a model ship resistance test by extrapolation. The calculation of propeller performance is conducted in the quasi-steady condition using the force of fluid working on one wing for each wing angle (with the wing rotated at the increment of 6 degrees), and the thrust and torque are determined using the averages of values obtained in one cycle. It is found that the torque value is overestimated in a considerable degree in the wing element theory. In the surface vortex lattice method, both thrust and torque values agree with experimental values mostly, and this method is found to be accurate enough as a navigation element calculation tool when many panels are considered. 4 refs., 5 figs., 1 tab.

  16. Calculation of illuminance distribution and its coefficient of variation in infinitely long interior with luminous surface ceiling by Monte Carlo simulation. Monte Carlo simulation ni yoru tenjomen kogen wo motsu mugencho shitsunal no shodo bunpu to hendo keisu

    Energy Technology Data Exchange (ETDEWEB)

    Nagata, M. (The University of Tokushima, Tokushima (Japan))

    1991-01-15

    Monte Carlo simulation (MCS) was applied to the estimation of illuminance distribution in infinitely long interiors which had visual obstructions and luminous surface ceilings, and its coefficient of variation (percentage of standard deviation to average value) was studied. The illuminance distributions obtained by MCS were compared with those calculated by theoretical equations hased on teh contour integration method, and the conservation law of photon bundles was also investigated. As a result, it was concluded that MCS results of direct illuminance distributions agree with those obtained by contour integration method in infinitely long concave interiors which have luminous surface ceilings of various shapes and four visual obstructions. The coefficient of variation varies noteworthily when visual obstructions are located in asymmetrical positions. The uniformity in illuminance distributions is improved by transparent visual obstructions. The conservation law of photon bundles holds well in the concave interiors with transparent visual obstructions. Therefore, it seems that MCS technique for illuminance calculation is a very powerful tool in infinite long concave interior spaces. 19 refs., 11 figs.

  17. Improvement of life and NO{sub x} emission of radiant tube heating system by elastic-plastic creep analysis; Dansosei kuripu kaiseki ni yoru hosha dennetsukan kanetsu shisutemu no jumyo to NO{sub x} haishutsuryo no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Nakagawa, Tsuguhiko; Nuta, Kunihiro [Kawasaki Steel Corp., Okayama, (Japan). Mizushima Warks

    1999-03-10

    The radiant tube heating system has been widely applied to the furnaces which require isolation of the heating atmosphere from the combustion atmosphere. However, the conventional system has a short life and it is difficult to reduce NO{sub x} emission when it is used at a high furnace temperature under high combustion load, because the fuel is burned in a small space. In order to solve this problem, we have studied the cause of radiant tube life depends on the uniformity of the temperature distribution along the radiant tube. We have developed a new burner using a two-stage combustion method with exhaust gas self-recirculation. As a result, the file of the new system has been increased by a factor of two or more, and NO{sub x} emission has been reduced by 20 % from previous levels. This paper presents an outline of the elastic-plastic creep analysis and the new burner, and describes the effect of its use on system life. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2000-10-25

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1999-11-15

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1999-09-01

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

  1. Effects of Mie tip-vane on pressure distribution of rotor blade and power augmentation of horizontal axis wind turbine; Yokutan shoyoku Mie ben ni yoru suiheijiku fusha yokumenjo no atsuryoku bunpu no kaizen to seino kojo tono kankei

    Energy Technology Data Exchange (ETDEWEB)

    Shimizu, Y.; Maeda, T.; Kamada, Y. [Mie Univ., Mie (Japan); Seto, H. [Mitsubishi Motors Corp., Tokyo (Japan)

    2000-04-01

    By recent developments of exclusive rotor blade, the efficiency of wind turbine is improved substantially. By measuring pressure on rotor blades of horizontal axis wind turbines rotating in wind tunnels, this report clarified relation between improvement of pressure distribution on main rotor blades by Mie vane and upgrade of wind turbine performance. The results under mentioned have been got by measuring pressure distribution on rotor blades, visualization by tuft, and measuring resistance of Mie vane. (1) The difference of pressure between suction surface and pressure surface on the end of rotor blade increase, and output power of wind turbine improves. (2) Vortex of blade end is inhibited by Mie vane. (3) The reason of reduction on wind turbine performance with Mie vane in aria of high rotating speed ratio is the increase of Mie vane flow resistance.(NEDO)

  2. Critical heat flux in bottom heated two-phase thermosyphon. Improvement in critical heat flux due to concentric tube; Katan shuchu kanetsugata niso netsu syphon no genkai netsu ryusoku. Nijukan ni yoru genkai netsu ryusoku no kaizen

    Energy Technology Data Exchange (ETDEWEB)

    Monde, M.; Mitsutake, Y. [Saga University, Saga (Japan). Faculty of Science and Engineering

    2000-02-25

    An experiment has been carried out to elucidate the critical heat flux (CHF) of an open two-phase thermosyphon with a bottom heated chamber in which heat is absorbed by evaporation of liquid. Another objective is to enhance the CHF using a concentric-tube by which counter-current flow of vapor and liquid in the throat of the chamber can be controlled well. The CHF data are measured for the saturated liquid of R 113 at a different pressure and different configuration of concentric tubes. The CHF data without the inner tube are in good agreement with the existing correlation and analytical result. The CHF increases by as much as several times of the CHF without the inner tube with an increase in the inner tube diameter up to a certain diameter of the inner tube and then decreases continuously as the inner tube diameter approaches the outer tube diameter. The optimum diameter of inner tube exists at which the CHF is maximum. (author)

  3. Energy dispersive X-ray investigation of silane coupling agent modified nickel-manganese-gallium particle surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Underhill, Royale S., E-mail: royale.underhill@drdc-rddc.gc.ca [Defence R and D Canada - Atlantic, Dockyard Laboratory (Atlantic) Halifax, NS B3K 5X5 (Canada); Fisher, Gary C.; Farrell, Shannon P. [Defence R and D Canada - Atlantic, Dockyard Laboratory (Atlantic) Halifax, NS B3K 5X5 (Canada)

    2012-02-15

    Highlights: Black-Right-Pointing-Pointer Modification of surfaces of NiMnGa with silane coupling agents. Black-Right-Pointing-Pointer Energy dispersive X-ray emission used for elemental analysis. Black-Right-Pointing-Pointer Variable energy electron beams used for depth analysis on particles. Black-Right-Pointing-Pointer Silane coupling agents promote silicon polymer attachment to NiMnGa particles. - Abstract: Nickel-manganese-gallium (NiMnGa) has been identified as a possible active material for kinetic energy harvesting. As monolithic crystals are susceptible to fracture, NiMnGa particle/polymer composites where the alloy remains the active material are proposed as an alternative. Optimum transfer of force requires good bonding between the alloy and the polymer matrix. The objectives of the current work were to develop a technique to examine the NiMnGa/polymer interface and the potential changes due to addition of silane coupling agents. To determine the presence of polymer/coupling agent at the alloy particle surface, an energy dispersive X-ray (EDX) spectrometer on a scanning electron microscope (SEM) was used. Using this method, it was possible to determine that Dow Corning{sup Registered-Sign} z6020 had the greatest interaction with the NiMnGa surface, although the polysiloxane had sufficient adherence without the use of coupling agents. This article demonstrates the novel use of EDX spectroscopy to indirectly investigate silane modification of metallic surfaces.

  4. Biological warfare agents

    Directory of Open Access Journals (Sweden)

    Duraipandian Thavaselvam

    2010-01-01

    Full Text Available The recent bioterrorist attacks using anthrax spores have emphasized the need to detect and decontaminate critical facilities in the shortest possible time. There has been a remarkable progress in the detection, protection and decontamination of biological warfare agents as many instrumentation platforms and detection methodologies are developed and commissioned. Even then the threat of biological warfare agents and their use in bioterrorist attacks still remain a leading cause of global concern. Furthermore in the past decade there have been threats due to the emerging new diseases and also the re-emergence of old diseases and development of antimicrobial resistance and spread to new geographical regions. The preparedness against these agents need complete knowledge about the disease, better research and training facilities, diagnostic facilities and improved public health system. This review on the biological warfare agents will provide information on the biological warfare agents, their mode of transmission and spread and also the detection systems available to detect them. In addition the current information on the availability of commercially available and developing technologies against biological warfare agents has also been discussed. The risk that arise due to the use of these agents in warfare or bioterrorism related scenario can be mitigated with the availability of improved detection technologies.

  5. Catalytic reductive dechlorination of p-chlorophenol in water using Ni/Fe nanoscale particles

    Institute of Scientific and Technical Information of China (English)

    ZHANG Wei-hua; QUAN Xie; ZHANG Zhuo-yong

    2007-01-01

    Nanoscale bimetallic Ni/Fe particles were synthesized from the reaction of sodium borohydride (NaBH4)with reduction of Ni2+and Fe2+ in aqueous solution.The obtained Ni/Fe particles were characterized by TEM(transmission electron microscope),XRD(X-ray diffractometer),and N2-BET The dechlorination activity of the Ni/Fe was investigated using P-chlorophenol (p-CP)as a pmbe agent.Results demonstrated that the nanoscale Ni/Fe could effectively dechlorinate P-CP at relatively low metal to solution ratio of 0.4 g/L (Ni 5 wt%).The target with initial concentration of P-CP O.625 mmol/L was dechlorinted completely in 60 min under ambient temperature and pressure.Factors affecting dechlorination efficiency,including reaction temperature,pH,Ni loading percentage over Fe,and metal to solution ratio.were investigated.The possible mechanism of dechlorination of P-CP was proposed and discussed.The pseudo-first-order reaction took place on the surface of the Ni/Fe bimetallic particles,and the activation energy of the dechlorination reaction was determined to be 21.2 kJ/mol at the temperature rang of 287-313 K.

  6. Vacuum-Free, Maskless Patterning of Ni Electrodes by Laser Reductive Sintering of NiO Nanoparticle Ink and Its Application to Transparent Conductors

    KAUST Repository

    Lee, Daeho

    2014-10-28

    © 2014 American Chemical Society. We introduce a method for direct patterning of Ni electrodes through selective laser direct writing (LDW) of NiO nanoparticle (NP) ink. High-resolution Ni patterns are generated from NiO NP thin films by a vacuum-free, lithography-free, and solution-processable route. In particular, a continuous wave laser is used for the LDW reductive sintering of the metal oxide under ambient conditions with the aid of reducing agents in the ink solvent. Thin (∼40 nm) Ni electrodes of glossy metallic surfaces with smooth morphology and excellent edge definition can be fabricated. By applying this method, we demonstrate a high transmittance (>87%), electrically conducting panel for a touch screen panel application. The resistivity of the Ni electrode is less than an order of magnitude higher compared to that of the bulk Ni. Mechanical bending test, tape-pull test, and ultrasonic bath test confirm the robust adhesion of the electrodes on glass and polymer substrates.

  7. Agent-Based Optimization

    CERN Document Server

    Jędrzejowicz, Piotr; Kacprzyk, Janusz

    2013-01-01

    This volume presents a collection of original research works by leading specialists focusing on novel and promising approaches in which the multi-agent system paradigm is used to support, enhance or replace traditional approaches to solving difficult optimization problems. The editors have invited several well-known specialists to present their solutions, tools, and models falling under the common denominator of the agent-based optimization. The book consists of eight chapters covering examples of application of the multi-agent paradigm and respective customized tools to solve  difficult optimization problems arising in different areas such as machine learning, scheduling, transportation and, more generally, distributed and cooperative problem solving.

  8. Users, Bystanders and Agents

    DEFF Research Database (Denmark)

    Krummheuer, Antonia Lina

    2015-01-01

    Human-agent interaction (HAI), especially in the field of embodied conversational agents (ECA), is mainly construed as dyadic communication between a human user and a virtual agent. This is despite the fact that many application scenarios for future ECAs involve the presence of others. This paper...... the construction of the agent’s identity, and (3) how HAI, as a mediated interaction, is framed by an asymmetric participation framework. The paper concludes by suggesting various participation roles, which may inform development of ECAs....

  9. Selective solid-phase extraction of Ni(II) by an ion-imprinted polymer from water samples

    Energy Technology Data Exchange (ETDEWEB)

    Saraji, Mohammad, E-mail: saraji@cc.iut.ac.ir [Department of Chemistry, Isfahan University of Technology, Isfahan 84154-83111 (Iran, Islamic Republic of); Yousefi, Hamideh [Department of Chemistry, Isfahan University of Technology, Isfahan 84154-83111 (Iran, Islamic Republic of)

    2009-08-15

    A new ion-imprinted polymer (IIP) material was synthesized by copolymerization of 4-vinylpyridine as monomer, ethyleneglycoldimethacrylate as crosslinking agent and 2,2'-azobis-sobutyronitrile as initiator in the presence of Ni-dithizone complex. The IIP was used as sorbent in a solid-phase extraction column. The effects of sampling volume, elution conditions, sample pH and sample flow rate on the extraction of Ni ions form water samples were studied. The maximum adsorption capacity and the relative selectivity coefficients of imprinted polymer for Ni(II)/Co(II), Ni(II)/Cu(II) and Ni(II)/Cd(II) were calculated. Compared with non-imprinted polymer particles, the IIP had higher selectivity for Ni(II). The relative selectivity factor ({alpha}{sub r}) values of Ni(II)/Co(II), Ni(II)/Cu(II) and Ni(II)/Cd(II) were 21.6, 54.3, and 22.7, respectively, which are greater than 1. The relative standard deviation of the five replicate determinations of Ni(II) was 3.4%. The detection limit for 150 mL of sample was 1.6 {mu}g L{sup -1} using flame atomic absorption spectrometry. The developed method was successfully applied to the determination of trace nickel in water samples with satisfactory results.

  10. Fluorescent Chemosensors for Selective and Sensitive Detection of Phosmet/Chlorpyrifos with Octahedral Ni(2+) Complexes.

    Science.gov (United States)

    Raj, Pushap; Singh, Amanpreet; Kaur, Kamalpreet; Aree, Thammarat; Singh, Ajnesh; Singh, Narinder

    2016-05-16

    The hexadentate ligands H2L1-L3 with mixed S, N, O donor sites and possessing substituents having either "no" or electron-releasing/withdrawing nature at terminal ends are synthesized. The ligands H2L1-L3 were tested for binding with library of metal ions, wherein maximum efficiency was observed with Ni(2+), and it motivated us to prepare the Ni(2+) complexes. The ligand H2L1 underwent deprotonation and formed binuclear complex when interacted with Ni(2+) as evident from its crystal structure. The H2L2 and H2L3 having electron-withdrawing/electron releasing groups, respectively, were also deprotonated; however, they afforded mononuclear complexes with Ni(2+) ion. This signifies the importance of steric parameters instead of electronic factors in these particular cases. Impressed by differential behavior of complexes of H2L1 and H2L2/H2L3 with Ni(2+) and their photophysical and electrochemical properties, all the metal complexes were studied for their chemosensing ability. Nowadays with increased use of organophosphate, there is alarming increase of these agents in the environment, and thus we require efficient technique to estimate the level of these agents with high sensitivity and selectivity in aqueous medium. The Ni(2+) complexes with hydrophobic nature were suspended into aqueous medium for testing them as sensor for organophosphate. The (L1)2.(Ni(2+))2 could sense phosmet with detection limit of 44 nM, whereas L2.Ni(2+) and L3.Ni(2+) exhibited the detection limits of 62 and 71 nM, respectively, for chlorpyrifos. PMID:27115348

  11. Fluorescent Chemosensors for Selective and Sensitive Detection of Phosmet/Chlorpyrifos with Octahedral Ni(2+) Complexes.

    Science.gov (United States)

    Raj, Pushap; Singh, Amanpreet; Kaur, Kamalpreet; Aree, Thammarat; Singh, Ajnesh; Singh, Narinder

    2016-05-16

    The hexadentate ligands H2L1-L3 with mixed S, N, O donor sites and possessing substituents having either "no" or electron-releasing/withdrawing nature at terminal ends are synthesized. The ligands H2L1-L3 were tested for binding with library of metal ions, wherein maximum efficiency was observed with Ni(2+), and it motivated us to prepare the Ni(2+) complexes. The ligand H2L1 underwent deprotonation and formed binuclear complex when interacted with Ni(2+) as evident from its crystal structure. The H2L2 and H2L3 having electron-withdrawing/electron releasing groups, respectively, were also deprotonated; however, they afforded mononuclear complexes with Ni(2+) ion. This signifies the importance of steric parameters instead of electronic factors in these particular cases. Impressed by differential behavior of complexes of H2L1 and H2L2/H2L3 with Ni(2+) and their photophysical and electrochemical properties, all the metal complexes were studied for their chemosensing ability. Nowadays with increased use of organophosphate, there is alarming increase of these agents in the environment, and thus we require efficient technique to estimate the level of these agents with high sensitivity and selectivity in aqueous medium. The Ni(2+) complexes with hydrophobic nature were suspended into aqueous medium for testing them as sensor for organophosphate. The (L1)2.(Ni(2+))2 could sense phosmet with detection limit of 44 nM, whereas L2.Ni(2+) and L3.Ni(2+) exhibited the detection limits of 62 and 71 nM, respectively, for chlorpyrifos.

  12. Synthesis and formation mechanism of Ag-Ni alloy nanoparticles at room temperature

    Science.gov (United States)

    Yan, Shi; Sun, Dongbai; Tan, Yuanyuan; Xing, Xueqing; Yu, Hongying; Wu, Zhonghua

    2016-11-01

    Ag-Ni nanoparticles were prepared with a chemical reduction method in the presence of polyvinylpyrrolidone (PVP) used as a stabilizing agent. During the synthesis of Ag-Ni nanoparticles, silver nitrate was used as the Ag+ source while nickel sulfate hexahydrate was used as Ni2+ source. Mixed solutions of Ag+ source and Ni2+ source were used as the precursors and sodium borohydride was used as the reducing agent. Five ratios of Ag+/Ni2+ (9:1, 3:1, 1:1, 1:3, and 1:9) suspensions were prepared in the corresponding precursors. Ag-Ni alloy nanoparticles were obtained with this method at room temperature. Scanning electronic microscope (SEM), energy dispersive spectrum (EDS), high resolution transmission electron microscope (HRTEM) were used to characterize the morphology, composition and crystal structure of the nanoparticles. The crystal structure was also investigated with X-ray diffraction (XRD). In all five Ag/Ni ratios, two kinds of particle structures were observed that are single crystal structure and five-fold twinned structure respectively. Free energy of nanoparticles with different crystal structures were calculated at each Ag/Ni ratio. Calculated results revealed that, with identical volume, free energy of single crystal particle is lower than multi-twinned particle and the difference becomes smaller with the increase of particle size; increase of Ni content will lead the increase of free energy for both structures. Formation of different crystal structures are decided by the structure of the original nuclei at the very early stage of the reduction process.

  13. Agent Standards Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The innovation of the work herein proposed is the development of standards for software autonomous agents. These standards are essential to achieve software...

  14. Treatment (recycling) of wastes at Tohoku Electric Power Company. Production of oil from waste plastics by using supercritical water, continuous decomposition of fluorocarbon by hydrothermal reaction, manufacture of coal ash sand and its utilization to asphalt road; Tohoku Denryoku no haikibutsu no shori (recycle). Chorinkaisui ni yoru hai plastic no yuka, suinetsu hanno ni yoru freon renzoku bunkai, sekitanbai suna no seizo to asphalt doro eno riyo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-10-01

    This paper introduces the captioned subjects regarding research and development of waste recycling systems executed at Tohoku Electric Power Company. With regard to production of oil from waste plastics in supercritical water, fundamental tests have been carried out in laboratory scale, and a continuous oil producing equipment (with a treatment capacity of 500 kg per day) was developed and installed based on the results therefrom. The equipment is under tests and operation now. In the research of fluorocarbon decomposition, a continuous fluorocarbon decomposing equipment was developed. The equipment utilizes hydrolytic capability possessed by high-temperature and high-pressure alkaline water to decompose fluorocarbon only by delivering under pressure a fluid mixture composed of fluorocarbon and aqueous alkaline solution into a heated fine reaction tube. The tests have verified that the decomposition is possible at 99.99% or higher at a reaction temperature of 240 deg C. In the effort of developing an effective coal ash utilization technology, a technology was developed, by which sand particles (coal ash sand) are manufactured by adding cement into coal ash, and granulating the mixture. The result of the research performed by the Tohoku Technology Office of the Ministry of Construction and Taisei Rotec Corp. proved effectiveness of the coal ash sand as a material to prevent rutting on asphalt pavement. 10 figs.

  15. Programming Service Oriented Agents

    OpenAIRE

    Hirsch, Benjamin; Konnerth, Thomas; Burkhardt, Michael; Albayrak, Sahin

    2010-01-01

    This paper introduces a programming language for service-oriented agents. JADL++ combines the ease of use of scripting-languages with a state-of-the-art service oriented approach which allows the seamless integration of web-services. Furthermore, the language includes OWL-based ontologies for semantic descriptions of data and services, thus allowing agents to make intelligent decisions about service calls.

  16. Electrocatalytic performances of LaNi1-xMgxO3 perovskite oxides as bi-functional catalysts for lithium air batteries

    Science.gov (United States)

    Du, Zhenzhen; Yang, Peng; Wang, Long; Lu, Yuhao; Goodenough, J. B.; Zhang, Jian; Zhang, Dawei

    2014-11-01

    Mg-doped perovskite oxides LaNi1-xMgxO3 (x = 0, 0.08, 0.15) electrocatalysts are synthesized by a sol-gel method using citric acid as complex agent and ethylene glycol as thickening agent. The intrinsic oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activity of as-prepared perovskite oxides in aqueous electrolyte are examined on a rotating disk electrode (RDE) set up. Li-air primary batteries on the basis of Mg-doped perovskite oxides LaNi1-xMgxO3 (x = 0, 0.08, 0.15) and nonaqueous electrolyte are also fabricated and tested. In terms of the ORR current densities and OER current densities, the performance is enhanced in the order of LaNiO3, LaNi0.92Mg0.08O3 and LaNi0.85Mg0.15O3. Most notably, partially substituting nickel with magnesium suppresses formation of Ni2+ and ensures high concentration of both OER and ORR reaction energy favorable Ni3+ (eg = 1) on the surface of perovskite catalysts. Nonaqueous Li-air primary battery using LaNi0.92Mg0.08O3 and LaNi0.85Mg0.15O3 as the cathode catalysts exhibit improved performances compared with LaNiO3 catalyst, which are consistent with the ORR current densities.

  17. Electroless Ni-P plating with a phytic acid pretreatment on AZ91D magnesium alloy

    International Nuclear Information System (INIS)

    A phytic acid conversion film with especial functional groups was proposed as the pretreatment layer between Ni-P coating and AZ91D magnesium alloy substrate, to replace the traditional pretreatment. In the process, the silane coupling agent was adopted as connector between conversion film and palladium ion with catalysis. The microstructure of the phytic acid conversion coatings was observed using scanning electronic microscopy, while the composition and functional groups were analyzed by energy dispersive spectrometer and Fourier transform infrared spectroscopy. The bonding between Si-OH of the silane coupling agent and hydroxyl of phytic acid was validated by X-ray photoelectron spectroscopy, and the existence of palladium ion was also verified. The subsequent Ni-P deposited on the layer was also characterized by its structure, morphology, and corrosion resistance. The results show that the Ni-P coatings with the phytic acid pretreatment on AZ91D magnesium alloy have good corrosion resistance.

  18. Electroless Ni-P plating with a phytic acid pretreatment on AZ91D magnesium alloy

    Energy Technology Data Exchange (ETDEWEB)

    Cui Xiufang, E-mail: cuixf97721@yahoo.com.cn [School of Materials Science and Chemical Engineering, Harbin Engineering University, 145 Nantong St., Harbin 150001 (China); State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016 (China); Jin Guo; Li Qingfen; Yang Yuyun [School of Materials Science and Chemical Engineering, Harbin Engineering University, 145 Nantong St., Harbin 150001 (China); Li Ying [State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016 (China); Wang Fuhui [School of Materials Science and Chemical Engineering, Harbin Engineering University, 145 Nantong St., Harbin 150001 (China); State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016 (China)

    2010-05-15

    A phytic acid conversion film with especial functional groups was proposed as the pretreatment layer between Ni-P coating and AZ91D magnesium alloy substrate, to replace the traditional pretreatment. In the process, the silane coupling agent was adopted as connector between conversion film and palladium ion with catalysis. The microstructure of the phytic acid conversion coatings was observed using scanning electronic microscopy, while the composition and functional groups were analyzed by energy dispersive spectrometer and Fourier transform infrared spectroscopy. The bonding between Si-OH of the silane coupling agent and hydroxyl of phytic acid was validated by X-ray photoelectron spectroscopy, and the existence of palladium ion was also verified. The subsequent Ni-P deposited on the layer was also characterized by its structure, morphology, and corrosion resistance. The results show that the Ni-P coatings with the phytic acid pretreatment on AZ91D magnesium alloy have good corrosion resistance.

  19. Biological Warfare Agents

    Directory of Open Access Journals (Sweden)

    Dev Vrat Kamboj

    2006-10-01

    Full Text Available There is a long historic record of use of biological warfare (BW agents by warring countriesagainst their enemies. However, the frequency of their use has increased since the beginningof the twentieth century. World war I witnessed the use of anthrax agent against human beingsand animals by Germans, followed by large-scale field trials by Japanese against war prisonersand Chinese population during world war II. Ironically, research and development in biologicalwarfare agents increased tremendously after the Geneva Protocol, signed in 1925, because ofits drawbacks which were overcome by Biological and Toxin Weapons Convention (BTWC in1972. Biological warfare programme took back seat after the 1972 convention but biologicalagents regained their importance after the bioterrorist attacks of anthrax powder in 2001. In thelight of these attacks, many of which turned out to be hoax, general awareness is required aboutbiological warfare agents that can be used against them. This review has been written highlightingimportant biological warfare agents, diseases caused by them, possible therapies and otherprotection measures.

  20. Nitriding behavior of Ni and Ni-based binary alloys

    Energy Technology Data Exchange (ETDEWEB)

    Fonovic, Matej

    2015-01-15

    Gaseous nitriding is a prominent thermochemical surface treatment process which can improve various properties of metallic materials such as mechanical, tribological and/or corrosion properties. This process is predominantly performed by applying NH{sub 3}+H{sub 2} containing gas atmospheres serving as the nitrogen donating medium at temperatures between 673 K and 873 K (400 C and 600 C). NH{sub 3} decomposes at the surface of the metallic specimen and nitrogen diffuses into the surface adjacent region of the specimen whereas hydrogen remains in the gas atmosphere. One of the most important parameters characterizing a gaseous nitriding process is the so-called nitriding potential (r{sub N}) which determines the chemical potential of nitrogen provided by the gas phase. The nitriding potential is defined as r{sub N} = p{sub NH{sub 3}}/p{sub H{sub 2}{sup 3/2}} where p{sub NH{sub 3}} and p{sub H{sub 2}} are the partial pressures of the NH{sub 3} and H{sub 2} in the nitriding atmosphere. In contrast with nitriding of α-Fe where the nitriding potential is usually in the range between 0.01 and 1 atm{sup -1/2}, nitriding of Ni and Ni-based alloys requires employing nitriding potentials higher than 100 atm{sup -1/2} and even up to ∞ (nitriding in pure NH{sub 3} atmosphere). This behavior is compatible with decreased thermodynamic stability of the 3d-metal nitrides with increasing atomic number. Depending on the nitriding conditions (temperature, nitriding potential and treatment time), different phases are formed at the surface of the Ni-based alloys. By applying very high nitriding potential, formation of hexagonal Ni{sub 3}N at the surface of the specimen (known as external nitriding) leads to the development of a compound layer, which may improve tribological properties. Underneath the Ni{sub 3}N compound layer, two possibilities exist: (i) alloying element precipitation within the nitrided zone (known as internal nitriding) and/or (ii) development of metastable and

  1. Facile synthesis of NiCo2O4-reduced graphene oxide nanocomposites with improved electrochemical properties

    International Nuclear Information System (INIS)

    Reduced graphene oxide-nickel cobaltite (RGO-NiCo2O4) nanocomposites have been successfully synthesized by a hydrothermal method with the assistance of Poly (diallyldimethylammonium chloride) (PDDA). PDDA is used as a reducing agent, capping agent and a stabilizer. The prepared RGO-NiCo2O4 nanocomposites have been thoroughly characterized by spectroscopic (Fourier-transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy) and thermogravimetric analysis. Microscopy techniques (scanning electron microscopy, transmission electron microscopy and atomic force microscopy) were employed to probe the morphological structures as well as to investigate the exfoliation of RGO sheets. The nanocomposites exhibited superior performance to NiCo2O4 as electrodes in pseudocapacitors with capacitance of 676.1 F/g. This is attributed to the increased electrical conductivity and the creation of new active sites due to the synergetic effect of RGO and NiCo2O4 nanoparticles

  2. Homogeneous precipitation of α-phase Co-Ni hydroxides hexagonal platelets

    Institute of Scientific and Technical Information of China (English)

    Juanjuan Liu; Xuyang Wang; Xiayin Yao; Jun wang; Zhaoping Liu

    2012-01-01

    This paper describes the synthesis of α-phase Co-Ni hydroxides hexagonal platelets through homogeneous precipitation,using hexamethylenetetramine (HMT) or urea as a hydrolytic agent.In the CoCl2-NiCl2-HMT system,pure α-phase can be synthesized at the concentrations of both metal ions higher than 20 mM,while in the CoCl2-NiCl2-urea system,the formation of pure α-phase is independent of the concentrations of the metal ions.When using HMT,monodisperse hexagonal platelets of α-phase Co-Ni hydroxides can be produced in the presence of polyvinylpyrrolidone (PVP).Cyclic voltammogram curve of the hexagonal platelets prepared with HMT demonstrates electrochemical performance superior to that of urea.

  3. A Study about Fe-Ni Mechanical Alloying Process by Dry and Wet Method

    Institute of Scientific and Technical Information of China (English)

    ZHOU Pei-heng; DENG Long-jiang; XIE Jian-liang; LIANG Di-fei; CHEN Liang

    2005-01-01

    The evolutions of microstructure of Fe0.85Ni0.15 products, which were prepared by mechanical alloying (MA) with and without process control agent (PCA), were studied using X-ray diffraction and scanning electron microscopy respectively. After MA without PCA (dry method) for 30h, Fe0.85Ni0.15 nanocrystalline alloy powders with bcc-Fe(Ni) phase were obtained; however, powders milled with PCA (wet method) from 20 to 90 h, were unalloyed Fe-Ni mixtures with balanced morphology. It seems that dry method works efficiently in nanocrystalline alloying while wet method postpones MA but functionally fines the morphology of materials. Finally, the results were discussed considering the MA kinetics.

  4. Low-temperature physical properties and electronic structures of Ni3Sb, Ni5Sb2, NiSb2, and NiSb

    Science.gov (United States)

    Luo, Xiao-Ning; Dong, Cheng; Liu, Shi-Kai; Zhang, Zi-Ping; Li, Ao-Lei; Yang, Li-Hong; Li, Xiao-Chuan

    2015-06-01

    We report the results of low temperature resistivity and magnetization measurements on polycrystalline samples of four Ni-Sb compounds, Ni3Sb, Ni5Sb2, NiSb, and NiSb2. Resistivity measurements revealed that these compounds exhibit a metallic type of electrical conductivity. Temperature dependences of the resistivities were well fitted by the generalized Bloch-Grüneisen formula with an exponent of n = 3, indicating that the s-d interband scattering is the dominant scattering mechanism. The magnetic susceptibilities of Ni5Sb2, NiSb, and NiSb2 are almost independent of temperature (above 150 K), exhibiting Pauli paramagnetic behavior. The temperature dependences of the susceptibilities were fitted using the Curie-Weiss law. Ni3Sb was found to have a paramagnetic-ferromagnetic phase transition at 229 K. First-principles calculations have been performed to investigate the electronic structures and physical properties of these Ni-Sb alloys. The calculation of the band structure predicted that Ni3Sb, Ni5Sb2, NiSb, and NiSb2 have characteristics of metal, and the ground state of Ni3Sb is ferromagnetic. The electrical and magnetic properties observed experimentally are consistent with that predicted by the first-principle electronic structure calculations. Project supported by the National Natural Science Foundation of China (Grant No. 21271183) and the National Basic Research Program of China (Grant Nos. 2011CBA00112 and 2011CB808202).

  5. Agent Oriented Programming进展%Advances in Agent Oriented Programming

    Institute of Scientific and Technical Information of China (English)

    王一川; 石纯一

    2002-01-01

    Agent-oriented programming (AOP) is a framework to develop agents, and it aims to link the gap betweentheory and practical in agent research. The core of an AOP framework is its language and semantics. In this paper,we propose the necessary properties which agents should have, and then give a summary and analysis about differentAOP languages based on these properties.

  6. Developing Enculturated Agents

    DEFF Research Database (Denmark)

    Rehm, Matthias

    2010-01-01

    on our cultural profiles that provide us with heuristics of behavior and interpretation. Thus, integrating cultural aspects of communicative behaviors in virtual agents and thus enculturating such systems seems to be inevitable. But culture is a multi-defined domain and thus a number of pitfalls arise......Embodied Conversational Agents (ECAs) are complex multimodal systems with rich verbal and nonverbal repertoires. There human-like appearance raises severe expectations regarding natural communicative behaviors on the side of the user. But what is regarded as “natural” is to a large degree dependent...... that have to be avoided in the endeavor. This chapter presents some of the pitfalls for enculturating interactive systems and presents strategies on how to avoid these pitfalls in relation to the standard development process of Embodied Conversational Agents....

  7. Agents unleashed a public domain look at agent technology

    CERN Document Server

    Wayner, Peter

    1995-01-01

    Agents Unleashed: A Public Domain Look at Agent Technology covers details of building a secure agent realm. The book discusses the technology for creating seamlessly integrated networks that allow programs to move from machine to machine without leaving a trail of havoc; as well as the technical details of how an agent will move through the network, prove its identity, and execute its code without endangering the host. The text also describes the organization of the host's work processing an agent; error messages, bad agent expulsion, and errors in XLISP-agents; and the simulators of errors, f

  8. Agents of endemic mycoses

    OpenAIRE

    Matos, Tadeja

    2015-01-01

    Med najpomembnejše povzročitelje endemskih mikoz, za katerimi zbolevajo tudi zdravi posamezniki z normalnim imunskim odgovorom, sodijo Histoplasma capsulatum, Blastomyces dermatitidis, Paracoccidioides brasiliensis in Coccidioides immitis. Za vse naštete glive je značilen temperaturni dimorfizem. Najdemo jih na omejenih geografskih področjih sveta in za okužbamiz njimi zbolevajo ljudje, ki stalno ali začasno živijo na teh področjih. Ker je naravna ekološ ka niša večine povzročiteljev endemski...

  9. El agente encubierto

    OpenAIRE

    Anaya Marcos, María del Carmen

    2015-01-01

    [ES] El trabajo versa sobre la figura del agente encubierto. Debemos enmarcar tal medida de investigación dentro del ámbito de la criminalidad organizada. Actualmente, estamos asistiendo a una proliferación de la delincuencia organizada. La sociedad ha evolucionado, y con ella la delincuencia. Fruto de tal evolución fue necesario incluir en nuestra Ley de Enjuiciamiento Criminal medidas extraordinarias de investigación, y una de ellas es el agente encubierto. Se trata de una medida muy polémi...

  10. Cr-Ni ALLOY ELECTRODEPOSITION AND COMPARISON WITH CONVENTIONAL PURE Cr COATING TECHNIQUE

    Directory of Open Access Journals (Sweden)

    M. Moniruzzaman

    2012-12-01

    Full Text Available Cr coating is widely used as the outer surface of precision parts due to its attractive appearance and superior corrosion resistance properties. It is obtained by electrodeposition via a conventional bath with hexavalent Cr ions. This manufacturing technique has many drawbacks, such as very low efficiency and high operating temperature and it is hazardous to health. In this work, we studied a Cr-Ni alloy deposition technique and compared the alloy coating properties to those with conventional Cr coating. Sequential two-step alloy electrodeposition was also compared. We took varying concentrations of Cr, Ni and complexing agents for the electrodeposition of Cr-Ni alloy and sequential Cr-Ni alloy coating on mild steel. Operating parameters, i.e. current density and temperature, were varied to examine their effects on the coating properties. The coatings thus obtained were characterized by visual observation, corrosion test, microhardness measurement, morphology and chemical analysis. The Cr-Ni alloy coating was found to be more corrosion resistant in 5% NaCl solution and harder than the pure Cr coating obtained by conventional electrodeposition. Toxic gas was produced in a much lower extent in the alloy coating than the conventional Cr coating technique. Again, the two-step Cr-Ni alloy coating was found better in terms of corrosion resistance as well as hardness compared to the Cr-Ni alloy coating. The process was also found to be much more environmentally friendly.

  11. Interface chemical states of NiO/NiFe films and their effects on magnetic properties

    Institute of Scientific and Technical Information of China (English)

    于广华; 柴春林; 朱逢吾; 赖武彦

    2002-01-01

    Ta/NiOx/Ni81Fe19/Ta multilayers were prepared by rf reactive and dc magnetron sputtering.The exchange coupling field (Hex) and the coercivity (Hc) of NiOx/Ni81Fe19 as a function of the ratio of Ar to O2 during the deposition process were studied.The composition and chemical states at the interface region of NiOx/NiFe were also investigated using the X-ray photoelectron spectroscopy (XPS) and peak decomposition technique.The results show that the ratio of Ar to O2 has great effect on the nickel chemical states in NiOx film.When the ratio of Ar to O2 is equal to 7 and the argon sputtering pressure is 0.57 Pa,the x value is approximately 1 and the valence of nickel is +2.At this point,NiOx is antiferromagnetic NiO and the corresponding Hex is the largest.As the ratio of Ar/O2 deviates from 7,the exchange coupling field (Hex) will decrease due to the presence of magnetic impurities such as Ni+3 or metallic Ni at the interface region of NiOx/NiFe,while the coercivity (Hc) will increase due to the metallic Ni.XPS studies also show that there are two thermodynamically favorable reactions at the NiO/NiFe interface: NiO+Fe=Ni+FeO and 3NiO+2Fe=3Ni+Fe2O3.These interface reaction products are magnetic impurities at the interface region of NiO/NiFe.It is believed that these magnetic impurities would have effect on the exchange coupling field (Hex) and the coercivity (Hc) of NiO/NiFe.

  12. Programming multi-agent systems

    NARCIS (Netherlands)

    Dastani, Mehdi

    2015-01-01

    With the significant advances in the area of autonomous agents and multi-agent systems in the last decade, promising technologies for the development and engineering of multi-agent systems have emerged. The result is a variety of agent-oriented programming languages, development frameworks, executio

  13. Software Agent Techniques in Design

    DEFF Research Database (Denmark)

    Hartvig, Susanne C

    1998-01-01

    This paper briefly presents studies of software agent techniques and outline aspects of these which can be applied in design agents in integrated civil engineering design environments.......This paper briefly presents studies of software agent techniques and outline aspects of these which can be applied in design agents in integrated civil engineering design environments....

  14. Trading Agents for Roaming Users

    OpenAIRE

    Boman, Magnus; Bylund, Markus; Espinoza, Fredrik; Danielson, Mats; Lyback, David

    2002-01-01

    Some roaming users need services to manipulate autonomous processes. Trading agents running on agent trade servers are used as a case in point. We present a solution that provides the agent owners with means to upkeeping their desktop environment, and maintaining their agent trade server processes, via a briefcase service.

  15. How extending motor vehicle's replacement cycle affects Japanese economy Impact assessment using macroeconometric and input-output simulations. Jidosha kaikae cycle no chokika ga kokunai keizai ni ataeru eikyo ni tsuite. Makuro keizai sangyo renkan model ni yoru hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Wakabayashi, M.

    1999-01-01

    The motor vehicle industry, which has inspired domestic production activities since the 1960's, is coming up against inevitable changes. One of the typical phenomena is that the domestic motor vehicle market is getting ripe. Since almost 80 percent of households in our country already have at least one motor vehicle and the population is going to reduce, it isn't expected that the newly car demand will increase rapidly as it did before the end of 1980's. It is strongly predicted that purchase of cars motivated mainly for replacement is going to take a leading part of domestic sales. In this paper, we calculate the impacts of extending motor vehicle's replacement cycles, as one aspect of maturation of the domestic motor vehicle market, on Japanese economy. Reduction of new car demands affects production not only in the motor vehicle industry, but also in the various industries. It is because motor vehicles are manufactured goods those need many step of production by the time of selling. Using CRIEPI's macroeconometric and input-output models, we clarified that retrenchment of car replacement would decrease 2.6 trillion yen of total industry output in 1990 constant price value added terms. The loss of output in the motor vehicle industry would be 381 billion yen, and in the retail and wholesale sector it would amount td 666 billion yen. Also, electric power industry would lose 47 billion yen's takings. Considering low economic growth since 1990, this impact could have a great influence on our prospective growing process. (author)

  16. How extending motor vehicle`s replacement cycle affects Japanese economy ? Impact assessment using macroeconometric and input-output simulations; Jidosha kaikae cycle no chokika ga kokunai keizai ni ataeru eikyo ni tsuite. Makuro keizai sangyo renkan model ni yoru hyoka

    Energy Technology Data Exchange (ETDEWEB)

    Wakabayashi, M.

    1999-01-01

    The motor vehicle industry, which has inspired domestic production activities since the 1960`s, is coming up against inevitable changes. One of the typical phenomena is that the domestic motor vehicle market is getting ripe. Since almost 80 percent of households in our country already have at least one motor vehicle and the population is going to reduce, it isn`t expected that the newly car demand will increase rapidly as it did before the end of 1980`s. It is strongly predicted that purchase of cars motivated mainly for replacement is going to take a leading part of domestic sales. In this paper, we calculate the impacts of extending motor vehicle`s replacement cycles, as one aspect of maturation of the domestic motor vehicle market, on Japanese economy. Reduction of new car demands affects production not only in the motor vehicle industry, but also in the various industries. It is because motor vehicles are manufactured goods those need many step of production by the time of selling. Using CRIEPI`s macroeconometric and input-output models, we clarified that retrenchment of car replacement would decrease 2.6 trillion yen of total industry output in 1990 constant price value added terms. The loss of output in the motor vehicle industry would be 381 billion yen, and in the retail and wholesale sector it would amount td 666 billion yen. Also, electric power industry would lose 47 billion yen`s takings. Considering low economic growth since 1990, this impact could have a great influence on our prospective growing process. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-10-01

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

  18. Effects of a ground plate on magnus effect of a rotating circular cylinder. 4th Report. Effects of boundary layer on ground plate and numerical analysis by the finite difference method; Jimen ni kinsetsushite kaitensuru ento mawari no nagare. 4. Jimenjo ni hattatsusuru kyokaisono eikyo to sabunho ni yoru suchi keisan

    Energy Technology Data Exchange (ETDEWEB)

    Kano, I.; Yagita, M.; Jia, W. [Yamagata University, Yamagata (Japan). Faculty of Engineering; Iwata, M. [Kawasaki Heavy Industries, Ltd., Kobe (Japan)

    2000-01-25

    The flow around a rotating circular cylinder placed at various heights above a moving plate has been investigated numerically and experimentally for the high Reynolds number (Re=3.3 x 10{sup 4}-6.6 x 10{sup 4}). The flow was affected considerably by the boundary layer on the moving plate and the initial conditions of the experiment. Starting from different initial conditions, two different flow patterns were observed for small gaps (0.03{<=}H/D{<=}0.12) under the same experimental conditions. The transition of the flow pattern occurs when the jet through the gap switches from the moving plate to the cylinder wall. This phenomenon is known as some kind of the Coanda effect. Computation of the two-dimensional unsteady Navier-Stokes equations was also conducted. The numerical results qualitatively agreed with the experimental ones. The standing vortex was found at 2.5 diameters behind the cylinder in the case of Coanda effect. (author)

  19. Changes in the temperature and velocity of ventilation air during mine fires; Studies on the effect of mine fire on underground ventilation systems. Konai kasai ni yoru tsuki ondo to fusoku henka ni kansuru jikkenteki kenkyu; Konai kasaiji no tsuki hendo ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Inoue, Masahiro; Uchino, Ken' ichi; Komai, Takeshi; Isei, Takehiro; Murakami, Tomohiro; Umezu, Minoru (Kyushu Univ., Fukuoka, (Japan). Faculty of Engineering National Research Inst. for Pollution and Resources, Tsukuba, (Japan) The Coal Mining Research Centre, Tokyo, (Japan))

    1990-02-25

    In order to find the effect on mine ventilation given by mine fire in coal mine, fire experiment was conducted utilizing actual size bord with 400m of length and 5.4m {sup 2} of section, then temperature, wind velocity and generated gas were measured.It was understood that windward wind velocity dropped as soon as the fire occured and the velocity was minimum toward the time when fire temperature was maximum. Further the drop level of wind velocity was remarkably greater with increasing set wind velocity, and when the temperature of the fire is low, the drop is small. It was also found that the temperature damping coefficient obtained by the gradient of ventilation temperature was about 0.007-0.01 and its deviation with passage of time was not recognized, then the information to develop the simulation of the fire was obtained. In order to exactly predict the deviation in temperature, it is considered to be necessary that the effect of deviation in heat transfer phenomenon of bord wall surface due to the increase in wind velocity or evaporation and condensation of moisture are revealed. 13 refs., 13 figs., 3 tabs.

  20. Study on the large-scale photovoltaic (PV) power generation in desert of China and its utilization. Development of energy and agriculture in solar farm; Chugoku ni okeru ogata taiyoko hatsuden to sono riyo ni kansuru kenkyu. Solar farm ni yoru energy to nogyo kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Nishioka, S.; Ohashi, Y.; Ito, H. [Tokyu Construction Co. Ltd., Tokyo (Japan); Ojima, S. [Maeda Corp., Tokyo (Japan)

    1997-01-30

    This paper proposes solar farm, a system suitable for China`s present circumstances, and describes its development plan. In this plan, agriculture and stock farming are promoted through irrigation using PV power in the desert zone, middle-east China. In addition, electric power is produced by laying PV power generation modules. The solar farm has 100 blocks of farmland equivalent to 700 ha, which includes 300 farmhouses (population of 1200). It can be a food supply base producing rice and wheat. The power generation capacity is at least 1000 kW, and the night power is supplied by battery installed in each farmhouse. The power generated in the daytime is used not only for agriculture but also for secondary industry such as processing of agricultural and stock farming products. The Chinese government requires 300,000 ha of farmland development every year up to 2030, the peak of population. When a half of this is developed by the solar farm, 200 solar farms are to be developed every year. For 30 years, 6000 solar farms are to be developed. 5 refs., 1 fig., 1 tab.

  1. Fundamental study on the new method to estimate vibration level on a ship. Formulation of the damping matrix based on dissipation energy caused by fluid viscosity; Senpaku no shindo level suitei ni kansuru kisoteki kenkyu. Ryutai no nensei ni yoru san`itsu energy ni motozuku gensui matrix no teishikika

    Energy Technology Data Exchange (ETDEWEB)

    Funaki, T.; Hayashi, S. [Osaka University, Osaka (Japan). Faculty of engineering

    1996-12-31

    It is known in estimating vibration characteristics of a ship that fluid range affects largely a structure. In order to analyze the compound vibration therein, a method was proposed, which estimates vibration levels without using the finite element method. However, the problem of mode decay ratio has not been solved. Therefore, this paper first describes a method to introduce an equivalent linear decay matrix. The paper then mentions difference in the decay effects due to fluid viscosity in a shallow and deep water regions. Furthermore, vibration levels in the deep water region were estimated in a model experiment to verify the estimation result. Under a hypothesis that two-node vibration in a rotating ellipse has displacement distributions in the deep and shallow water regions equivalent, and when a case of vibration in a layer flow condition is calculated, dissipation energy in the shallow region is larger than that in the deep region by about 26%. About 5% of the total dissipation energy is consumed at bottom of the sea. According to a frequency response calculation, estimated values for the response levels still differ from experimental values, although the trend that the vibration levels change can be reproduced. 6 refs., 15 figs., 2 tabs.

  2. Thermodynamic reassessment of Gd–Ni system

    Energy Technology Data Exchange (ETDEWEB)

    Rahou, Z., E-mail: rahou.zakarea@gmail.com; Mahdouk, K.

    2015-11-05

    By means of CALPHAD (CALculation of PHAse Diagrams) approach, the phase diagram and thermodynamic data of the Gd–Ni system were critically assessed. The Gd–Ni system contains four solution phases (liquid, face-centered cubic FCC-A1, body-centered cubic BCC-A2 and hexagonal close-packed HCP-A3) modeled with the Redlich-Kister polynomials and seven intermetallic compounds Gd{sub 3}Ni, GdNi, GdNi{sub 2}, GdNi{sub 3}, Gd{sub 2}Ni{sub 7}, GdNi{sub 5} and Gd{sub 2}Ni{sub 17}, which are all treated as stoichiometric compounds. A set of self-consistent thermodynamic parameters describing various phases in this binary system was obtained. The phase diagram and thermodynamic quantities calculated from assessed parameters agree well with experimental data.

  3. Effect of thermal treatment on the synthesis of NiAl 2 O 4 spinel oxide using chitosan as precursor

    Directory of Open Access Journals (Sweden)

    C. G. Anchieta

    2015-12-01

    Full Text Available Abstract Nickel aluminate oxide (NiAl2O4 was prepared using chitosan as polymeric precursor and ammonia solution as a precipitating agent. In addition, nickel nitrate and aluminum nitrate salts were used as sources of Ni and Al, under stoichiometric amounts (molar ratio Ni:Al = 1:2. NiAl2O4 particles were prepared at different calcination temperatures and their properties were investigated. The synthesized materials were characterized by X-ray diffraction, infrared spectroscopy, atomic force microscopy, thermogravimetric analysis and nitrogen adsorption-desorption isotherms. The results showed that the thermal treatment process strongly influence on the formation of a single-phase structure of NiAl2O4 spinel. Nickel aluminate spinel with a porous structure and high surface area was obtained at temperatures above 700 ºC.

  4. Agents of Change

    DEFF Research Database (Denmark)

    Hansen, Jens Aage; Lehmann, Martin

    2004-01-01

    at large, it emphasises universities as key change agents and providers in new learning, including tools such as project based and problem oriented learning (PBL) as well as information and communication technology (ICT); as providers of competent and motivated graduates to fill key positions in society...

  5. Programming Agents with Emotions

    NARCIS (Netherlands)

    Dastani, Mehdi; Floor, Chr.; Meyer, John-Jules Charles

    2014-01-01

    In this paper we show how a cognitive agent programming language can be endowed with ways to program emotions. In particular we show how the programming language 2APL can be augmented so that it can work together with the computational emotion model ALMA to deal with appraisal, emotion/mood generati

  6. The need for agents

    DEFF Research Database (Denmark)

    Abolfazlian, Ali Reza Kian

    1996-01-01

    I denne artikel arbejder vi med begrebet Intelligent Software Agents (ISAs), som autonomous, social, reactive, proactive og subservient computer systemer. Baseret på socialt psykologiske argumenter viser jeg endvidere, hvordan både den menneskelige natur og det teknologiske stadium, som mennesket...

  7. SECOND BUYING AGENT

    CERN Multimedia

    SPL - SERVICES ACHATS

    2000-01-01

    Last year the buying agent LOGITRADE started operations on the CERN site, processing purchasing requests for well-defined families of products up to a certain value. It was planned from the outset that a second buying agent would be brought in to handle the remaining product families. So, according to that plan, the company CHARLES KENDALL will be commencing operations at CERN on 8 May 2000 in Building 73, 1st floor, offices 31 and 35 (phone and fax numbers to be announced).Each buying agent will have its own specific list of product families and will handle purchasing requests up to 10'000 CHF.Whenever possible they will provide the requested supplies at a price (including the cost of their own services) which must be equivalent to or lower than the price mentioned on the purchasing request, changing the supplier if necessary. If a lower price cannot be obtained, agents will provide the necessary administrative support free of charge.To ensure that all orders are processed in the best possible conditions, us...

  8. Build Autonomic Agents with ABLE

    Institute of Scientific and Technical Information of China (English)

    吴吉义

    2007-01-01

    The IBM Agent Building and Learning Environment(ABLE) provides a lightweight Java~(TM) agent frame- work,a comprehensive JavaBeansTM library of intelligent software components,a set of development and test tools, and an agent platform.After the introduction to ABLE,classes and interfaces in the ABLE agent framework were put forward.At last an autonomic agent that is an ABLE-based architecture for incrementally building autonomic systems was discussed.

  9. Submicron particles of Co, Ni and Co–Ni alloys

    Indian Academy of Sciences (India)

    P Saravanan; T A Jose; P John Thomas; G U Kulkarni

    2001-10-01

    Magnetic sub-micron sized particles (with diameters in the range 100–600 nm) of Co, Ni and Co–Ni alloys, protected with polyvinylpyrrolidone have been prepared in gram quantities using the polyol process. Experiments carried out with different metal precursors and starting compositions have yielded reliable routes to produce particles of the desired diameters in the 100–600 nm range. The particles were characterized with X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, thermogravimetric analysis and magnetic measurements. The particles are found to be stable under ambient conditions indefinitely. The coercivity values of the Co and Ni particles are ∼ 50% higher compared to the corresponding bulk values. The alloy particles follow a trend similar to the bulk alloys.

  10. ANOMALOUS ELECTRODEPOSITION OF Fe-Ni ALLOY COATING FROM SIMPLE AND COMPLEX BATHS AND ITS MAGNETIC PROPERTY

    OpenAIRE

    M A Islam

    2010-01-01

    Electrodeposition of Fe-Ni thin films has been carried on copper substrate under various electrodeposition conditions from two simple and six complex baths. Sulfate baths composing of NiSO4. 7H2O, FeSO4.7H2O, H3BO3 and Na2SO4KEYWORDS: Anomalous Electrodeposition, Fe-Ni Coating, Complexing agent, Current Density, Magnetic Property. 1. INTRODUCTION Alloy electrodeposition technologies can extend tremendously the potential of electrochemical deposition processes to provide coatings that require ...

  11. Ni putes ni soumises. Media and women with other gender?

    OpenAIRE

    THIÉBLEMONT Sylvie

    2014-01-01

    Since 2000, new women's movements emerge like Ni putes ni soumises (NPNS) who give a new approach to activism: not the one on feminists in the classi- cal sense of the term with the connotations it carries, but women carrying claims in the media and through the media on the living conditions of the residents of the suburbs. So, many media will take part in the mediatization of NPNS and its dis-courses, and will serve in some way as a place of “factory” for the public opinion.

  12. Effects of plate thickness on reverse martensitic transformation of prestrained NiTi/NiTi alloy

    Institute of Scientific and Technical Information of China (English)

    YAN Zhu; CUI Lishan; ZHENG Yanjun

    2007-01-01

    In this Paper, differential scanning calorimeter (DSC)was used to study the effects of predeformation and plate thickness on the reverse martensitic transformation of explosively welded NiTi/NiTi alloy.Results showed that there was a constraint between Ni50.4Ti(NiTi-1)and Ni49.8Ti (NiTi-2),which led to that the thickness of NiTi-1 or NiTi-2 strongly affected the reverse martensitic transformation behavior because residual stress variations in thickness wound enable bias force to be built inside the composite.The DSC measurements showed that after deformation,the reverse martensitic transformation temperature of the composite was increased with the increasing thickness of NiTi-2.Also.the XRD results revealed that the microstructure of NiTi/NiTi alloy changed from B2 phase to B19'phase along the thickness direction.

  13. Preparation and property of duplex Ni-B-TiO2/Ni nano-composite coatings

    Science.gov (United States)

    Wang, Shu-Jen; Wang, Yuxin; Shu, Xin; Tay, Seeleng; Gao, Wei; Shakoor, R. A.; Kahraman, Ramazan

    2015-03-01

    The duplex Nickel-Boron-Titania/Nickel (Ni-B-TiO2/Ni) coatings were deposited on mild steel by using two baths with Ni as the inner layer. TiO2 nanoparticles were incorporated into the Ni-B coatings as the outer layer by using solid particle mixing method. The microstructure, morphology and corrosion resistance of the duplex Ni-B-TiO2/Ni nanocomposite coatings were systemically investigated. The results show that the duplex interface was uniform and the adhesion between two layers was very good. The microhardness of duplex Ni-B-TiO2/Ni coating was much higher than the Ni coating due to the outer layer of Ni-B-TiO2 coating. The corrosion resistance of the duplex Ni-B-TiO2/Ni coating was also significantly improved comparing with single Ni-B coating. The Ni-B-10 g/L TiO2/Ni coating was found to have the best corrosion resistance among these duplex coatings. This type of duplex Ni-B-TiO2/Ni coating, with high hardness and good corrosion resistance properties, should be able to find broad applications under adverse environmental conditions.

  14. Sherlock Holmes, Agente 007

    OpenAIRE

    Romea Castro, Celia

    2010-01-01

    Londres, 1891, Sherlock Holmes y el Dr. Watson evitan el asesinato de una niña por parte de lord Blackwood (Marc Strong), un asesino místico al que perseguía desde hacía mucho tiempo. Tres meses más tarde, Holmes está sin un nuevo caso y se aburre. Watson pretende irse del 221 de Baker Street para independizarse y casarse con María Morstan. La película no es la adaptación de ninguna novela de Conan Doyle. Está basada es una historia escrita por Lionel Wigram, luego adaptada a un cómic con dib...

  15. Perioperative allergy: uncommon agents.

    Science.gov (United States)

    Caimmi, S; Caimmi, D; Cardinale, F; Indinnimeo, L; Crisafulli, G; Peroni, D G; Marseglia, G L

    2011-01-01

    Anesthesia may often be considered as a high-risk procedure and anaphylaxis remains a major cause of concern for anesthetists who routinely administer many potentially allergenic agents. Neuromuscular blocking agents, latex and antibiotics are the substances involved in most of the reported reactions. Besides these three agents, a wide variety of substances may cause an anaphylactic reaction during anesthesia. Basically all the administered drugs or substances may be potential causes of anaphylaxis. Among them, those reported the most in literature include hypnotics, opioids, local anesthetics, colloids, dye, Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), Iodinated Contrast Media (ICM), antiseptics, aprotinin, ethylene oxyde and formaldehyde, and protamine and heparins. No premedication can effectively prevent an allergic reaction and a systematic preoperative screening is not justified for all patients; nevertheless, an allergy specialist should evaluate those patients with a history of anesthesia-related allergy. Patients must be fully informed of investigation results, and advised to provide a detailed report prior to future anesthesia. PMID:22014927

  16. A cell-based screening system for anti-influenza A virus agents

    Science.gov (United States)

    Wong, Wan Ying; Loh, Sheng Wei; Ng, Wei Lun; Tan, Ming Cheang; Yeo, Kok Siong; Looi, Chung Yeng; Maah, Mohd Jamil; Ea, Chee-Kwee

    2015-01-01

    Emerging of drug resistant influenza A virus (IAV) has been a big challenge for anti-IAV therapy. In this study, we describe a relatively easy and safe cell-based screening system for anti-IAV replication inhibitors using a non-replicative strain of IAV. A nickel (II) complex of polyhydroxybenzaldehyde N4-thiosemicarbazone (NiPT5) was recently found to exhibit anti-inflammatory activity in vivo and in vitro. NiPT5 impedes the signaling cascades that lead to the activation of NF-κB in response to different stimuli, such as LPS and TNFα. Using our cell-based screening system, we report that pretreating cells with NiPT5 protects cells from influenza A virus (IAV) and vesicular stomatitis virus (VSV) infection. Furthermore, NiPT5 inhibits replication of IAV by inhibiting transcription and translation of vRNAs of IAV. Additionally, NiPT5 reduces IAV-induced type I interferon response and cytokines production. Moreover, NiPT5 prevents activation of NF-κB, and IRF3 in response to IAV infection. These results demonstrate that NiPT5 is a potent antiviral agent that inhibits the early phase of IAV replication. PMID:25728279

  17. Comprehensive theoretical studies on the low-lying electronic states of NiF, NiCl, NiBr, and NiI.

    Science.gov (United States)

    Zou, Wenli; Liu, Wenjian

    2006-04-21

    The low-lying electronic states of the nickel monohalides, i.e., NiF, NiCl, NiBr, and NiI, are investigated by using multireference second-order perturbation theory with relativistic effects taken into account. For the energetically lowest 11 lambda-S states and 26 omega states there into, the potential energy curves and corresponding spectroscopic constants (vertical and adiabatic excitation energies, equilibrium bond lengths, vibrational frequencies, and rotational constants) are reported. The calculated results are grossly in very good agreement with those solid experimental data. In particular, the ground state of NiI is shown to be different from those of NiF, NiCl, and NiBr, being in line with the recent experimental observation. Detailed analyses are provided on those states that either have not been assigned or have been incorrectly assigned by previous experiments.

  18. SAM : Semantic Agent Model for SWRL rule-based agents

    OpenAIRE

    Subercaze, Julien; Maret, Pierre

    2010-01-01

    International audience SemanticWeb technologies are part of multi-agent engineering, especially regarding knowledge base support. Recent advances in the field of logic for the semantic web enable a new range of applications. Among them, programming agents based on semantic rules is a promising field. In this paper we present a semantic agent model that allows SWRL programming of agents. Our approach, based on the extended finite state machine concept, results in a three layers architecture...

  19. Ni2P Catalyst for Hydrodesulfurization%Ni2P加氢脱硫催化剂

    Institute of Scientific and Technical Information of China (English)

    宋华; 代敏; 宋华林

    2012-01-01

    ,promoter and complex agent have important effect on the formation of Ni2P active phase,as well as the catalytic activity.Compared with commercial sulfide catalyst,the Ni2P catalyst shows higher HDS activity for thiophene,dibenzothiophene and 4,6-dimethyldibenzothiophene.

  20. Preparation of anode-electrolyte structures using graphite, sodium bicarbonate or citric acid as pore forming agents for application in solid oxide fuel cells

    Energy Technology Data Exchange (ETDEWEB)

    Paz Fiuza, Raigenis da; Silva, Marcos Aurelio da; Guedes, Bruna C.; Pontes, Luiz A.; Boaventura, Jaime Soares [UFBA, Salvador, Bahia (Brazil). Energy and Materials Science Group

    2010-07-01

    Cermets based on Ni supported on YSZ or GDC were prepared for use as anode in direct reform SOFCs. NaHCO3 (Na-Ni-YSZ and Na-Ni-GDC) or citric acid (Ac-Ni-YSZ and Ac-Ni-GDC) were used as pore forming agents (PFAs). The SOFC anode was also prepared using graphite (G-Ni-YSZ and G-Ni-GDC) as PFA for the purposes of comparison. The testing unitary SOFC, planar type, was made by pressing the anode-electrolyte assembly, followed by sintering at 1500 C. After this, LSM (lanthanum and strontium manganite) paint was used for the cathode deposition. The powdered cermets were evaluated in ethanol steam reforming at 650 C. The ethanol conversion was 84% and 32% for cermets Na-Ni-YSZ and G-Ni-YSZ, respectively and the selectivity to H{sub 2} was 32 and 20% for the two cermets, respectively. The Na-Ni-YSZ cermet was ten times more resistant to carbon deposition than the G-Ni-YSZ cermet. SEM micrographs of the anode-electrolyte assembly showed that the use of NaHCO{sub 3} as PFA created a well formed interface between layers with homogeneously distributed pores. In contrast, graphite as PFA formed a loose interface between anode and electrolyte. The performance of the unitary SOFC was evaluated using ethanol, hydrogen or methane as fuel. The cell operated well using any of these fuels; however, they exhibited different electrochemical behavior. (orig.)

  1. CONFIGURATION-INTERACTION IN NI METAL AND NI-ALLOYS AND HIGH-ENERGY SPECTROSCOPY

    NARCIS (Netherlands)

    TANAKA, A; JO, T; SAWATZKY, GA

    1992-01-01

    We discuss the electronic state of Ni atoms in Ni metal and of Ni impurity in Cu and Au metals from the viewpoint of 3d configuration interaction (CI) using the Anderson impurity model including atomic multiplets. On the basis of the discussion, we give an interpretation for the Ni 2p-core X-ray pho

  2. Laser welding of TiNi shape memory alloy and stainless steel using Ni interlayer

    International Nuclear Information System (INIS)

    Highlights: ► Laser welding was achieved using Ni interlayer between TiNi SMA and stainless steel. ► Ni interlayer thickness has great effects on joint microstructure and properties. ► Increasing Ni interlayer thickness results in increasing γ-Fe phase in weld metals. ► Excessive addition of Ni results in forming more TiNi3 and pores in the weld metals. ► Suitable Ni interlayer thickness improves the joint quality. -- Abstract: Laser welding of TiNi shape memory alloy wire to stainless steel wire using Ni interlayer was investigated. The results indicated that the Ni interlayer thickness had great effects on the chemical composition, microstructure, gas-pore susceptibility and mechanical properties of laser-welded joints. With an increase of Ni interlayer thickness, the weld Ni content increased and the joint properties increased due to decreasing brittle intermetallic compounds (TiFe2 and TiCr2). The joint fracture occurred in the fusion zone with a brittle intermetallic compound layer. The tensile strength and elongation of the joints reached the maximum values (372 MPa and 4.4%) when weld Ni content was 47.25 wt.%. Further increasing weld Ni content resulted in decreasing the joint properties because of forming more TiNi3 phase, gas-pores and shrinkage cavities in the weld metals. It is necessary to select suitable Ni interlayer thickness (weld composition) for improving the mechanical properties of laser-welded joints.

  3. Density of Liquid Ni-Cr Alloy

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    The density of liquid Ni-Cr alloy was measured by a modified sessile drop method. The density of liquid Ni-Cr alloywas found to decrease with increasing temperature and Cr concentration in the alloy. The molar volume of liquidNi-Cr alloy increases with increasing the Cr concentration in the alloy. The molar volume of Ni-Cr alloy determinedin the present work shows a positive deviation from the linear molar volume.

  4. 除铜试剂NiS的制备与表征%Preparation and Characteristic of Decoppering Reagent NiS

    Institute of Scientific and Technical Information of China (English)

    苏瑞娟

    2015-01-01

    以聚乙二醇为表面活性剂,NiSO4· 6H2O 与Na2S· 9H2O为原料在30 ℃下制备合成NiS,研究结果表明:NiS是以非晶为主的多晶,在温度t=85℃的条件下,将除铜剂NiS按其过量1.2倍加入到pH=3.5的镍电解阳极液除Fe后液中,反应2 h后,除铜深度可达到3 mg/L以下,渣中铜镍质量比大于20,制备的NiS在6 h内能保持其良好的活性,满足除铜工艺的要求,并且在除铜过程中无其它杂质离子进入溶液.%The preparation of synthetic NiS with polyethyleneglycol as surface active agent and NiSO4﹒6H2 O and Na2 S﹒9H2 O as the main raw material in the reaction temperature of 30℃was carried out.The experimental results showed that:NiS is polycrystal mainly composed of amorphous phase ,rdecoppering reagent NiS will achieve the best result when the dos-age of NiS is 1.2 times of theoretical value, the pH value is 3.5, the reaction time is 2h and the reaction temperature is 85℃.The copper concentration could be decreased below 3 mg/L in electrolyte solution and the mass ratios of copper to nickel is more than 20 in the residue after removing copper and NiS still keeps active after the aging time of 6 hours, which reached the requirements of nickel electrorefining.No harmful ions enter into the nickel anode electrolyte.

  5. NiSn and porous NiZn coatings for water electrolysis

    Energy Technology Data Exchange (ETDEWEB)

    Santos, M.B.F.; Peres da Silva, E.; Andrade, R. Jr.; Dias, J.A.F. (Universidade Estadual de Campinas, SP (BR). Lab. de Hidrogenio)

    1992-01-01

    Porous Ni(Zn) coatings are prepared from the electrodeposition of NiZn alloys followed by chemical leaching in KOH solution. A pyrophosphate bath is used to electrodeposit NiSn alloys (14-84 at.% Sn). Polarization curves for hydrogen and oxygen evolution reactions in 28 wt% KOH solutions at 70{sup o}C are presented for selected Ni(Zn) and NiSn coatings. The electrocatalytic activity of a Ni(Zn) porous anode is maintained after 850 h of electrolysis, whereas the NiSn cathode loses its properties. (author).

  6. Recycling Ni from Contaminated and Mineralized Soils.

    Science.gov (United States)

    Rare plant species accumulate potentially valuable concentrations of some metals. Alyssum murale readily accumulates over 2% Ni in aboveground dry matter when grown on Ni-mineralized serpentine soils in Oregon, allowing production of “hay” biomass with at least 400 kg Ni ha-1 with low levels of fer...

  7. Preparation, characterization, and antibacterial activity of NiFe2O4/PAMA/Ag-TiO2 nanocomposite

    Science.gov (United States)

    Allafchian, Alireza; Jalali, Seyed Amir Hossein; Bahramian, Hamid; Ahmadvand, Hossein

    2016-04-01

    We have described a facile fabrication of silver deposited on the TiO2, Poly Acrylonitrile Co Maleic Anhydride (PAMA) polymer and nickel ferrite composite (NiFe2O4/PAMA/Ag-TiO2) through a three-step procedure. A pre-synthesized NiFe2O4 was first coated with PAMA polymer and then Ag-TiO2 was deposited on the surface of PAMA polymer shell. After the characterization of this three-component composite by various techniques, such as FTIR, XRD, FESEM, BET, TEM and VSM, it was impregnated in standard antibiotic discs. The antibacterial activity of NiFe2O4/PAMA/Ag-TiO2 nanocomposite was investigated against some gram positive and gram negative bacteria by employing disc diffusion assay and then compared with that of naked NiFe2O4, NiFe2O4/Ag, AgNPs and NiFe2O4/PAMA. The results demonstrated that the AgNPs, when embedded in TiO2 and combined with NiFe2O4/PAMA, became an excellent antibacterial agent. The NiFe2O4/PAMA/Ag-TiO2 nanocomposite could be readily separated from water solution after the disinfection process by applying an external magnetic field.

  8. Mechanisms of High Coercivity in Ni/NiO Composite Films by Post Annealing

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A coercivity as large as 2.4 kOe has been achieved in the Ni/NiO composite film after an annealing under a magnetic field of 10 kOe and an O2 partial pressure of 0.001 torr. The coercivity was attributed to the strong exchange coupling of Ni and NiO. Small grain size of Ni and NiO was observed after the post-annealing. The enhanced coercivity is probably associated with the domain wall pinning by local energy minima, the distribution of Ni and NiO, and the domain structure in the interface of Ni/NiO generated under the presence of the magnetic field during the post-annealing.

  9. Reaction of amorphous Ni-W and Ni-N-W films with substrate silicon

    Science.gov (United States)

    Zhu, M. F.; Suni, I.; Nicolet, M.-A.; Sands, T.

    1984-01-01

    Wiley et al. (1982) have studied sputtered amorphous films of Nb-Ni, Mo-Ni, Si-W, and Si-Mo. Kung et al. (1984) have found that amorphous Ni-Mo films as diffusion barriers between multilayer metallizations on silicon demonstrate good electrical and thermal stability. In the present investigation, the Ni-W system was selected because it is similar to the Ni-Mo system. However, W has a higher silicide formation temperature than Mo. Attention is given to aspects of sample preparation, sample characterization, the interaction between amorphous Ni-W films and Si, the crystallization of amorphous Ni(36)W(64) films on SiO2, amorphous Ni-N-W films, silicide formation and phase separation, and the crystallization of amorphous Ni(36)W(64) and Ni(30)N(21)W(49) layers.

  10. Effects of chemical coating with Ni on electrochemical properties of Mg2Ni hydrogen storage alloys

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The effects of nickel coating on the electrochemical properties of Mg2Ni hydrogen storage alloys are presented in this paper. X-ray diffraction (XRD) and scanning electron microscope (SEM) techniques were employed to examine the crystal structure and surface morphologies of the bare and Ni-coated Mg2Ni alloys. The electrochemical properties of alloys were characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results showed that Ni coating not only decreased the charge transfer resistance, but also decreased the H atom diflusion resistance for Mg2Ni alloys. It was also found that Ni coating effectively improved the discharge capacity, but decreased the cycling performance of the as-synthesized Ni-coated Mg2Ni alloys. The discharge current has a great impact on the cycling performance of the as-synthesized Ni-coated Mg2Ni alloys.

  11. The Power Trading Agent Competition

    OpenAIRE

    Ketter, W.; Collins, J.; REDDY, P; Flath, C.

    2011-01-01

    This is the specification for the Power Trading Agent Competition for 2011 (Power TAC 2011). Agents are simulations of electrical power brokers, who must compete with each other for both power production and consumption, and manage their portfolios.

  12. Agents Play Mix-game

    CERN Document Server

    Gou, C

    2005-01-01

    In mix-game which is an extension of minority game, there are two groups of agents; group1 plays the majority game, but the group2 plays the minority game. This paper studies the change of the average winnings of agents and volatilities vs. the change of mixture of agents in mix-game model. It finds that the correlations between the average winnings of agents and the mean of local volatilities are different with different combinations of agent memory length when the proportion of agents in group 1 increases. This study result suggests that memory length of agents in group1 be smaller than that of agent in group2 when mix-game model is used to simulate the financial markets.

  13. The Power Trading Agent Competition

    NARCIS (Netherlands)

    W. Ketter (Wolfgang); J. Collins (John); P. Reddy (Prashant); C. Flath (Christoph)

    2011-01-01

    textabstractThis is the specification for the Power Trading Agent Competition for 2011 (Power TAC 2011). Agents are simulations of electrical power brokers, who must compete with each other for both power production and consumption, and manage their portfolios.

  14. Peripheral Neuropathy and Agent Orange

    Science.gov (United States)

    ... Enter ZIP code here Peripheral Neuropathy and Agent Orange VA presumes Veterans' early-onset peripheral neuropathy is related to their exposure to Agent Orange or other herbicides during service when the disease ...

  15. Structural Characterization and Mechanical Properties of As-plated and Heat Treated Electroless Ni-B-P Alloy Coatings

    Directory of Open Access Journals (Sweden)

    P. G. Venkatakrishnan

    2014-05-01

    Full Text Available The Ni-B-P alloy coatings were made autocatalytically (electroless using an alkaline plating bath with nickel chloride hexahydrate (NiCl2.6H2O as the source of nickel ions, sodium borohydride (NaBH4 and sodium hypophosphite (NaH2PO2 as reducing agents and source of boron and phosphorous ions, respectively. The effects of bath concentrations on the plating rate, composition of coating, surface morphology, structural features and microhardness have been studied by varying NaBH4 concentration in the plating bath from 0.2 to 0.8 g/l while keeping NaH2PO2 concentration constant (12 g/l. The plating rate and boron content of the electroless Ni-B-P ternary alloy coatings increased with increasing NaBH4 concentration in the plating bath. The scanning electron microscopic images revealed that the morphology of the coating changed from corn cob structure to coarse cauliflower structure with increasing borohydride concentration in the plating bath. Broadening of X-ray diffraction peak is observed, as the borohydride concentration is increased in the plating bath, which is attributed to the large reduction in the crystallite size of the Ni-B-P alloy coatings. The microhardness values of the coating increased with increasing borohydride concentration in the plating bath. The as-plated Ni-B-P alloy coating containing higher boron content (3.2 wt% shows higher hardness of 700 HV compared to other Ni-B-P alloy coatings. The XRD patterns of heat treated Ni-B-P alloy coatings (500 °C show Ni3B intermetallic peaks along with Ni peaks. The presence of Ni3B intermetallic compound significantly increases the microhardness values of the heat treated Ni-B-P alloy coatings.

  16. Preparation and capacitance properties of graphene/NiAl layered double-hydroxide nanocomposite.

    Science.gov (United States)

    Wang, Zhuo; Zhang, Xin; Wang, Junhui; Zou, Linda; Liu, Zhaotie; Hao, Zhengping

    2013-04-15

    Graphene/NiAl layered double-hydroxide (LDH) composite with high capacitive properties has been prepared in a friendly one-step process. It is found that NiAl-LDH is formed in the addition of precipitator agent (NaOH and NaNO3) by hydrothermal method, at the same time graphene oxide (GO) is reduced to graphene. The morphology and structure of the obtained material are examined by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), transmission electron microscope (TEM), and scanning electron microscope (SEM) techniques. It is revealed that the NiAl-LDH disperses well on the surface of graphene and the formation of NiAl-LDH nanoparticles is beneficial to the peeling of graphene (RGO). More importantly, the addition of NiAl-LDH to graphene endows the materials with desirable specific surface areas and higher porosity. These structural advantages result in higher specific capacitance compared with pristine graphene. Electrochemical property investigations show that the graphene/NiAl-LDH had a higher specific capacitance than graphene. PMID:23411355

  17. Mediating Performance Through Virtual Agents

    OpenAIRE

    Giannachi, Gabriella; Gillies, Marco; Kaye, Nick; Swapp, David

    2009-01-01

    This paper presents the process of creation of virtual agents used in a virtual reality performance. The performance aimed to investigate how drama and performance could inform the creation of virtual agents and also how virtual reality could raise questions for drama and performance. The virtual agents were based on the performance of 2 actors. This paper describes the process of preparing the actors, capturing their performances and transferring them to the virtual agents. A second set of a...

  18. Cultural Differentiation of Negotiating Agents

    NARCIS (Netherlands)

    Hofstede, G.J.; Jonker, C.M.; Verwaart, D.

    2012-01-01

    Negotiations proceed differently across cultures. For realistic modeling of agents in multicultural negotiations, the agents must display culturally differentiated behavior. This paper presents an agent-based simulation model that tackles these challenges, based on Hofstede’s model of national cultu

  19. Cultural differentiation of negotiating agents

    NARCIS (Netherlands)

    Hofstede, G.J.; Jonker, C.M.; Verwaart, T.

    2010-01-01

    Negotiations proceed differently across cultures. For realistic modeling of agents in multicultural negotiations, the agents must display culturally differentiated behavior. This paper presents an agent-based simulation model that tackles these challenges, based on Hofstede’s model of national cultu

  20. Assigning agents to a line

    DEFF Research Database (Denmark)

    Hougaard, Jens Leth; Moreno-Ternero, Juan D.; Østerdal, Lars Peter Raahave

    2014-01-01

    We consider the problem of assigning agents to slots on a line, where only one agent can be served at a slot and each agent prefers to be served as close as possible to his target. Our focus is on aggregate gap minimizing methods, i.e., those that minimize the total gap between targets and assigned...

  1. Chemical warfare agents

    Directory of Open Access Journals (Sweden)

    Vijayaraghavan R

    2010-01-01

    Full Text Available Among the Weapons of Mass Destruction, chemical warfare (CW is probably one of the most brutal created by mankind in comparison with biological and nuclear warfare. Chemical weapons are inexpensive and are relatively easy to produce, even by small terrorist groups, to create mass casualties with small quantities. The characteristics of various CW agents, general information relevant to current physical as well as medical protection methods, detection equipment available and decontamination techniques are discussed in this review article. A brief note on Chemical Weapons Convention is also provided.

  2. Secure Mobile Trade Agent

    Directory of Open Access Journals (Sweden)

    Musbah M. Aqe

    2007-01-01

    Full Text Available E-commerce on the internet has the ability to produce millions of transactions and a great number of merchants whose supply merchandise over the internet. As a result, it is difficult for entities to roam over every site on the internet and choose the best merchandise to trade. So, in this paper we introduced a mobile trade agent that visit the sites to gather and evaluate the information from merchant servers and decide to trade goods on behalf of the user. We observed that the combination of public key cryptosystem with distributed object technology make this proposed scheme more secure and efficient than the already existed schemes.

  3. Agentes de información Information Agents

    Directory of Open Access Journals (Sweden)

    Alfonso López Yepes

    2005-12-01

    Full Text Available Este artículo realiza un repaso sobre las tipologías de agentes de información y describe aspectos como movilidad, racionalidad y adaptatividad, y el ajuste final de estos conceptos a entornos distribuidos como Internet, donde este tipo de agentes tienen un amplio grado de aplicación. Asimismo, se propone una arquitectura de agentes para un sistema multiagente de recuperación de información donde se aplica un paradigma documental basado en el concepto de ciclo documental.This article summarizes the main information agent types reflecting on issues such as mobility, rationality, adaptability and the final adjustment of this concepts to distributed environments such as the Internet, where this kind of agents has wide range application. Likewise, an information agent architecture is proposed to create a multi-agent information retrieval system in which a documentary paradigm based on the documentary cycle is developed.

  4. Lipid-lowering agents.

    Science.gov (United States)

    Ewang-Emukowhate, Mfon; Wierzbicki, Anthony S

    2013-09-01

    The role of lipid lowering in reducing the risk of mortality and morbidity from cardiovascular disease (CVD) is well established. Treatment particularly aimed at decreasing low-density lipoprotein cholesterol (LDL-C) is effective in reducing the risk of death from coronary heart disease and stroke. Statins form the cornerstone of treatment. However, in some individuals with a high risk of CVD who are unable to achieve their target LDL-C due to either intolerance or lack of efficacy, there is the need for alternative therapies. This review provides an overview of the different classes of currently available lipid-lowering medications including statins, fibrates, bile acid sequestrants (resins), and omega-3 fatty acids. Data are presented on their indications, pharmacology, and the relevant end point clinical trial data with these drugs. It also discusses the human trial data on some novel therapeutic agents that are being developed including those for homozygous familial hypercholesterolemia--the antisense oligonucleotide mipomersen and the microsomal transfer protein inhibitor lomitapide. Data are presented on phase II and III trials on agents with potentially wider applications, cholesterol ester transfer protein inhibitors and proprotein convertase subtilisin kexin 9 inhibitors. The data on a licensed gene therapy for lipoprotein lipase deficiency are also presented.

  5. Advances in antithrombotic agents.

    Science.gov (United States)

    Chakrabarti, Ranjan; Das, Saibal Kumar

    2007-07-01

    Thrombosis is the condition where an imbalance in the homeostatic mechanism results in unwanted intravascular thrombus formation. Imbalances in this highly regulated process of coagulation and anticoagulation can lead to a variety of pathophysiological conditions leading to stroke, pulmonary heart attack and other serious conditions. In the western world, thromboembolic diseases are the leading cause of morbidity and mortality. Remarkable progress has occurred over the last decade in the development of antithrombotic drugs, which can be classified into 3 major categories - Anticoagulants, Antiplatelets and thrombolytics. Increased understanding of the pathobiology of thrombotic and vascular disorders has helped researchers to target novel pathways involving the coagulation, thrombolytic, fibrinolytic and integrin systems. Traditionally aspirin and unfractionated heparin was used for myocardial infarction. Newer antiplatelet agents such as, clopidogrel, GP IIb/IIIa inhibitors, low molecular weight heparin, direct thrombin inhibitors and several improved thrombolytic agents have been introduced for clinical use. This review will discuss different important drugs, which have been launched in recent years and also some new targets pursued by different companies. PMID:17630943

  6. Holograms as Teaching Agents

    Science.gov (United States)

    Walker, Robin A.

    2013-02-01

    Hungarian physicist Dennis Gabor won the Pulitzer Prize for his 1947 introduction of basic holographic principles, but it was not until the invention of the laser in 1960 that research scientists, physicians, technologists and the general public began to seriously consider the interdisciplinary potentiality of holography. Questions around whether and when Three-Dimensional (3-D) images and systems would impact American entertainment and the arts would be answered before educators, instructional designers and students would discover how much Three-Dimensional Hologram Technology (3DHT) would affect teaching practices and learning environments. In the following International Symposium on Display Holograms (ISDH) poster presentation, the author features a traditional board game as well as a reflection hologram to illustrate conventional and evolving Three-Dimensional representations and technology for education. Using elements from the American children's toy Operation® (Hasbro, 2005) as well as a reflection hologram of a human brain (Ko, 1998), this poster design highlights the pedagogical effects of 3-D images, games and systems on learning science. As teaching agents, holograms can be considered substitutes for real objects, (human beings, organs, and animated characters) as well as agents (pedagogical, avatars, reflective) in various learning environments using many systems (direct, emergent, augmented reality) and electronic tools (cellphones, computers, tablets, television). In order to understand the particular importance of utilizing holography in school, clinical and public settings, the author identifies advantages and benefits of using 3-D images and technology as instructional tools.

  7. El Karate-Do como agente educativo y herramienta social

    OpenAIRE

    González Becerra, Rafael Andrés

    2013-01-01

    Solo contamos con el hombre/mujer y el arte, en nuestro caso un Arte Marcial, el Karate-Do. En la continua búsqueda de implementar el mismo, vemos con mucha alegría la profundización del mismo implementándolo como agente Educativo, en los procesos de integración en los niños, jóvenes y adultos, también con capacidades distintas. Para comprender esto y fundamentarlo concebiremos a la educación como un medio para desarrollar al ser humano. El Karate-Do permite entre otras cosas el desarrollo...

  8. Enfermedad diarréica aguda (EDA) nuevos agentes virales

    OpenAIRE

    Peláez, Dioselina

    2004-01-01

    La EDA es una de las enfermedades más importantes en términos de morbilidad y mortalidad a nivel mundial. Cada año ocurren más de un billón de episodios diarreicos en niños menores de 5 años con altos costos hospitalarios y pérdida de la productividad. Agentes bacterianos ( E.coli, Salmonella, Shiguella , toxinas), parasitarios (Giardia, Cryptosporidium, Entamoeba), virales (Rotavirus, Adenovirus, Astrovirus, Norovirus, Enterovirus ) y otros (intolerancias a ...

  9. Agent-oriented Software Engineering

    Institute of Scientific and Technical Information of China (English)

    GUAN Xu; CHENG Ming; LIU Bao

    2001-01-01

    An increasing number of computer systems are being viewed in terms of autonomous agents.Most people believe that agent-oriented approach is well suited to design and build complex systems. Yet. todate, little effort had been devoted to discuss the advantages of agent-oriented approach as a mainstreamsoftware engineering paradigm. Here both of this issues and the relation between object-oriented and agent-oriented will be argued. we describe an agent-oriented methodology and provide a quote for designing anauction system.

  10. Structural evaluation and nonlinear optical properties of Ni/NiO, Ni/NiCo2O4 and Co/Co3O4 nanocomposites

    International Nuclear Information System (INIS)

    Nanocomposites of Ni/NiO, Ni/NiCo2O4 and Co/Co3O4 have been synthesized by a chemical reduction technique. X-ray diffraction (XRD) and transmission electron microscopy (TEM) images confirm the mixed composite nature of the sample and uniform particle size of approximately 13 nm. Formation of Ni/NiCo3O4 solid solution or NiCo2O4 spinel phase in the mixed composite is confirmed by energy dispersive X-ray (EDX) spectrum. Magnetic hysteresis (M–H) curves of the nanocomposites show excellent ferromagnetic (FM) nature at room temperature. Nonlinear optical transmission of the nanocomposites is measured using the open aperture Z-scan technique employing 7 nanosecond laser pulses at 532 nm. Experimental results show that NiO/NiO–Co3O4/Co3O4 nanocomposites exhibit good optical limiting performance. From the measurements and numerical fitting of the data to theory, it is found that nonlinear absorption has contributions from excited state absorption and two-photon absorption. Optical limiting is enhanced in Co3O4 and Ni/NiCo2O4 in which the Co3O4 content has a larger volume ratio.

  11. First-principles calculations for the elastic properties of Ni-base model superalloys:Ni/Ni_3Al multilayers

    Institute of Scientific and Technical Information of China (English)

    Wang Yun-Jiang; Wang Chong-Yu

    2009-01-01

    A model system consisting of Ni[001](100)/Ni_3Al[001](100)multi-layers are studied using the density functional theory in order to explore the elastic properties of single crystal Ni-based superalloys. Simulation results are consistent with the experimental observation that rafted Ni-base superalloys virtually possess a cubic symmetry. The convergence of the elastic properties with respect to the thickness of the multilayers are tested by a series of multilayers from 2γ'+2γto 10γ'+10γ atomic layers. The elastic properties axe found to vary little with the increase of the multilayer's thickness. A Ni/Ni_3Al multilayer with 10γ'+10γatomic layers(3.54 nm)can be used to simulate the mechanical properties of Ni-base model superalloys. Our calculated elastic constants, bulk modulus, orientation-dependent shear modulus and Young's modulus. as well as the Zener anisotropy factor are all compatible with the measured results of Ni. base model superalloys R1 and the advanced commercial superalloys TMS-26.CMSX-4 at a low temperature. The mechanical properties as a function of the γ' phase volume fraction are calculated by varying the proportion of theγ andγ'phasein the multilayers. Besides, the mechanical properties of two-phase Ni/Ni_3A1 multilayer call be well predicted by the Voigt-Reuss-Hill rule of mixtures.

  12. MORBIDITY AGENTS: A REVIEW

    Directory of Open Access Journals (Sweden)

    Shrivastava Neelesh

    2011-09-01

    Full Text Available This paper discuss on clinical representation of morbid jealousy which often termed delusional jealousy or ‘Othello Syndrome’ is a psychiatric condition where a lover believes against all reason and their beloved is being sexually unfaithful. Patients will be preoccupied with their partner’s perceived lack of sexual fidelity and will often behave in an unacceptable or extreme way as they endeavor to prove their ideas. Misuse of any psychomotor is an important association cause morbidity jealousy agents, like CNS stimulants that release the catecholamine, particularly dopamine, from pre synaptic terminals substance should be treated as a priority. Where higher levels of violence are reported Sildenafil may be useful as a diagnostic as well as therapeutic test in such cases .Many studies have shown an association between high alcohol consumption and developing morbid jealousy. Amphetamine-induced psychosis has been extensively studied because of its close resemblance to schizophrenia.

  13. Product and Agent

    DEFF Research Database (Denmark)

    Montecino, Alex; Valero, Paola

    2015-01-01

    In this paper we will explore how the “mathematics teacher” becomes a subject and, at the same time, is subjected as part of diverse dispositive of power. We argue that the mathematics teacher becomes both a product and a social agent, which has been set, within current societies, from the ideas...... of globalization, social progress, and competitive logic. For our approximation, we use the concepts societies of control, dispositive, and discourses from a Foucault–Deleuze toolbox. Our purpose is to cast light on the social and cultural constitution of the ways of thinking about the mathematics teacher. Hence......, our critical examination offers understandings about how mathematics teachers are part of the larger cultural politics of schooling and education....

  14. Mushrooms as therapeutic agents

    Directory of Open Access Journals (Sweden)

    Sushila Rathee

    2012-04-01

    Full Text Available Mushrooms have been known for their nutritional and culinary values and used as medicines and tonics by humans for ages. In modern terms, they can be considered as functional foods which can provide health benefits beyond the traditional nutrients. There are monographs that cover the medicinal and healing properties of some individual traditional mushrooms. There has been a recent upsurge of interest in mushrooms not only as a health food which is rich in protein but also as a source of biologically active compounds of medicinal value which include complementary medicine/dietary supplements for anticancer, antiviral, hepatoprotective, immunopotentiating and hypocholesterolemic agents. However the mechanisms of the various health benefits of mushrooms to humans still require intensive investigation, especially given the emergence of new evidence of their health benefits. In the present paper the medicinal potential of mushrooms is being discussed.

  15. Newer Hemostatic Agents.

    Science.gov (United States)

    Franchini, Massimo; Favaloro, Emmanuel J; Lippi, Giuseppe

    2015-10-01

    The mainstay of treatment of inherited coagulation disorders is based on the infusion of the deficient clotting factor, when available. Significant advances have been made over the past two decades in the production and availability of factor replacement products. In spite of such progression, several issue are still unsolved, the most important being the need for frequent factor concentrate infusions and the development of inhibitory alloantibodies. To overcome these important limitations, several newer hemostatic agents with an extended half-life are at an advanced stage of clinical development. After a brief overview of hemostasis, this narrative review summarizes the current knowledge on the most promising novel products for hemostasis. The current status of gene therapy for hemophilia, the only therapeutic option to definitively cure this inherited bleeding disorder, is also concisely discussed. PMID:25893779

  16. Microencapsulation of chemotherapeutic agents

    International Nuclear Information System (INIS)

    Mixing various amounts of chemotherapeutic agents such as cisplatinum, 5-fluorouracil, mitomycin-C, and adriamycin with polymers such as poly-d, 1-lactide, ethylhydroxyethylcellulose, and polycaprolactone, several kinds of microcapsules were made. Among them, microcapsule made from ethylhydroxyethylcellulose showed best yield. Under light microscopy, the capsules were observed as particles with refractive properties. For the basic toxicity test, intraarterial administration of cisplatinum was done in 6 adult mongrel dogs. Follow-up angiography was accomplished in 2 wk intervals for 6 wks. Despite no significant difference in the histopathological examination between the embolized and normal kidneys, follow-up angiogram showed atrophy of renal cortex and diminished numbers of arterial branches in the embolized kidneys. In order to identify the structural properties of microcapsules, and to determine the drug content and the rate of release, further experiment is thought to be necessary. (Author)

  17. Hepatocytes as Immunological Agents.

    Science.gov (United States)

    Crispe, Ian N

    2016-01-01

    Hepatocytes are targeted for infection by a number of major human pathogens, including hepatitis B virus, hepatitis C virus, and malaria. However, hepatocytes are also immunological agents in their own right. In systemic immunity, they are central in the acute-phase response, which floods the circulation with defensive proteins during diverse stresses, including ischemia, physical trauma, and sepsis. Hepatocytes express a variety of innate immune receptors and, when challenged with pathogen- or damage-associated molecular patterns, can deliver cell-autonomous innate immune responses that may result in host defense or in immunopathology. Important human pathogens have evolved mechanisms to subvert these responses. Finally, hepatocytes talk directly to T cells, resulting in a bias toward immune tolerance. PMID:26685314

  18. SDS-assisted hydrothermal synthesis of NiO flake-flower architectures with enhanced gas-sensing properties

    Science.gov (United States)

    Miao, Ruiyang; Zeng, Wen; Gao, Qi

    2016-10-01

    A facile hydrothermal route was developed for the preparation of well-aligned hierarchical flower-like NiO nanostructure with the assistance of SDS that served as a structure-directing agent as well as a capping agent in the process of aggregation and assembly. Notably, the NiO sensors exhibit enhanced gas-sensing performance towards ethanol, which could be explained in association with the ultrathin nanosheets that are close to Debye length (LD) scale and thus get the majority carriers fully depleted due to the ionization of adsorbed oxygen, abundant effective gas diffusion paths as well as high surface-to-volume ratio to promote sufficient contact and reaction between the NiO sample and ethanol molecules, and numerous miniature reaction rooms assembled with nanosheets to make the test gas molecules stay long enough for completed gas-sensing reactions. Besides, a novel growth mechanism with the passage of reaction time was also proposed in detail.

  19. UTBot: A Virtual Agent Platform for Teaching Agent System Design

    Directory of Open Access Journals (Sweden)

    In-Cheol Kim

    2007-02-01

    Full Text Available We introduce UTBot, a virtual agent platform for teaching agent system design. UTBot implements a client for the Unreal Tournament game server and Gamebots system. It provides students with the basic functionality required to start developing their own intelligent virtual agents to play autonomously UT games. UTBot includes a generic agent architecture, CAA (Context-sensitive Agent Architecture, a domain-specific world model, a visualization tool, several basic strategies (represented by internal modes and internal behaviors, and skills (represented by external behaviors. The CAA architecture can support complex long-term behaviors as well as reactive short-term behaviors. It also realizes high context-sensitivity of behaviors. We also discuss our experience using UTBot as a pedagogical tool for teaching agent system design in undergraduate Artificial Intelligence course.

  20. Flowsheet for 63Ni production

    International Nuclear Information System (INIS)

    The production of large quantities of high specific activity 63Ni (>10Ci/g) requires both a highly enriched 62Ni target and a long irradiation period at high neutron flux. Trace impurities in the nickel and associated target materials are also activated and account for a significant fraction of the discharged activity and essentially all of the gamma activity. While most of these undesirable activation products (mainly transition metals) can be easily removed as chloride complexes during anion exchange, chromium, present as 51Cr, and manganese, present as 54Mn, are exceptions and require solvent extraction of the in-cell product to achieve the desired purity. In addition to summarizing the current development and production experience, optimized flowsheets are discussed

  1. Monoligated monovalent Ni: the 3d(Ni)9 manifold of states of NiCu and comparison to the 3d9 States of AlNi, NiH, NiCl, and NiF.

    Science.gov (United States)

    Rothschopf, Gretchen K; Morse, Michael D

    2005-12-22

    A dispersed fluorescence investigation of the low-lying electronic states of NiCu has allowed the observation of four out of the five states that derive from the 3d(Ni)9 3d(Cu)10 sigma2 manifold. Vibrational levels of the ground X2delta(5/2) state corresponding to v = 0-11 are observed and are fit to provide omega(e) = 275.93 +/- 1.06 cm(-1) and omega(e)x(e) = 1.44 +/- 0.11 cm(-1). The v = 0 levels of the higher lying states deriving from the 3d(Ni)9 3d(Cu)10 sigma2 manifold are located at 912, 1466, and 1734 cm(-1), and these states are assigned to omega values of 3/2, 1/2, and 3/2, respectively. The last of these assignments is based on selection rules and is unequivocal; the first two are based on a comparison to ab initio and ligand field calculations and could conceivably be in error. It is also possible that the v = 0 level of the state found at 912 cm(-1) is not observed, so that T0 for the lowest excited state actually lies near 658 cm(-1). These results are modeled using a matrix Hamiltonian based on the existence of a ground manifold of states deriving from the 3d9 configuration on nickel. This matrix Hamiltonian is also applied to the spectroscopically well-known molecules AlNi, NiH, NiCl, and NiF. The term energies of the 2sigma+, 2pi, and 2delta states of these molecules, which all derive from a 3d9 configuration on the nickel atom, display a clear and understandable trend as a function of the electronegativity of the ligands.

  2. Manufacture of Raney Ni catalyst with metastable Ni2Al3 by high-energy milling

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    The Ni-Al alloy containing Cr, Fe additives were prepared as Raney Ni catalyst by high energy milling. The size and surface state of Ni-Al alloy powder were studied by particle size analyzer and sanning electron microscopy, the structure was analyzed by XRD and Mossbauer methods. The results showed that after a high-energy milling (HEM), the Ni-Al alloy transforms to a nano-scale NiAl structure with rich Al. Byannealing the alloy, a metastable Ni2Al3 phase can be obtained.

  3. Manufacture of Raney Ni catalyst with metastable Ni2Al3 by high—energy milling

    Institute of Scientific and Technical Information of China (English)

    滕荣厚; 马如璋; 等

    1999-01-01

    The Ni-Al alloy containing Cr,Fe additives were prepared as Raney Ni Catalyst by high energy milling.The size and surface state of Ni-Al alloy powder were studied by particle size analyzer and sanning electron microscopy.the Structure was analyzed by XRD and Moessbauer methods.The results showed that after a high-energy milling(HEM).the Ni-Al alloy transforms to a nano-scale NiAl structure with rich Al.By annealing the alloy,a metastable Ni2Al3 phase can be obtained.

  4. Exclusive study of Ni+Ni and Ni+Au central collisions: phase coexistence and spinodal decomposition; Etude exclusive des collisions centrales Ni+Ni et Ni+Au: coexistence de phase et decomposition spinodale

    Energy Technology Data Exchange (ETDEWEB)

    Guiot, B

    2002-12-01

    The INDRA multidetector allowed us to study the Ni+Ni collisions at 32A MeV and the Ni+Au collisions at 52,4 MeV. Central collisions leading to 'quasi-fused' systems were isolated using multidimensional analysis techniques: the Discriminant Analysis and the Principal Component Analysis. Comparison with a statistical model shows that the selected events are compatible with thermodynamical equilibrium. The average thermal excitation energy is 5A MeV for both systems. Calculations of heat capacities show that the deexcitation of the hot sources are akin to a liquid-gas phase transition of nuclear matter. Indeed heat capacities exhibit a negative branch as expected for a phase transition of a finite system. The dynamics of this phase transition has been investigated by applying the charge correlation method. An enhanced production of events with equal-sized fragments has been evidenced for Ni+Au at 52A MeV. No signal was found for Ni+Ni at 32A MeV. Finally this method was improved by taking into account the total charge conservation. The signal is seen more clearly for Ni+Au at 52A MeV, but is ambiguous for Ni+Ni at 32A MeV. The path followed in the state diagram, or the involved time scales, seem to be different for these systems. (authors)

  5. niños preescolares

    Directory of Open Access Journals (Sweden)

    Claudia Rosario Portilla Ramírez

    2007-01-01

    Full Text Available Este estudio explora la relación entre la escritura y la comprensión de la referencia a través de una tarea de sinonimia en niños entre 5 y 6 años de edad, de origen latinoamericano, escolarizados en Barcelona (España. Las variables relacionadas con la tarea de sinonimia fueron (a la comprensión de la entidad lingüística nombre y (b el nivel de conceptualización de la escritura de los niños y la presencia de etiquetas escritas durante la tarea. Para la tarea de sinonimia se utilizaron pares de sinónimos dialectales del español (de Latinoamérica y de la Península Ibérica. Los resultados mostraron una diferenciación en el razonamiento de los niños, la cual dependía de la comparación entre lenguaje oral y lenguaje escrito en el desarrollo de la tarea, evidenciando una mayor aceptación de la sinonimia en la modalidad de lenguaje oral que en la modalidad de lenguaje escrito.

  6. Measured Activities of Al and Ni in gamma-(Ni) and gamma'-(Ni)3Al in the Ni-Al-Pt System

    Science.gov (United States)

    Copland, Evan

    2007-01-01

    Adding Pt to Ni-Al coatings is critical to achieving the required oxidation protection of Ni-based superalloys, but the nature of the Pt effect remains unresolved. This research provides a fundamental part of the answer by measuring the influence of Pt on the activities of Al and Ni in gamma-(Ni), gamma prime-(Ni)3Al and liquid in the Ni-Al-Pt system. Measurements have been made at 25 compositions in the Ni-rich corner over the temperature range, T = 1400-1750 K, by the vapor pressure technique with a multiple effusion-cell mass spectrometer (multi-cell KEMS). These measurements clearly show adding Pt (for X(sub Pt) less than 0.25) decreases a(Al) while increasing a(Ni). This solution behavior supports the idea that Pt increases Al transport to an alloy / Al2O3 interface and also limits the interaction between the coating and substrate alloys in the gamma-(Ni) + gamma prime-(Ni)3Al region. This presentation will review the progress of this study.

  7. Comparison of the thermal stabilities of NiSi films in Ni/Si, Ni/Pd/Si and Ni/Pt/Si systems

    CERN Document Server

    Wang, R N

    2003-01-01

    The effects of different interlayer materials (Pd and Pt) deposited between Ni films and Si substrates on the NiSi thermal stability are discussed. Ni sub 0 sub . sub 9 sub 4 sub 3 Pd sub 0 sub . sub 0 sub 5 sub 7 Si and Ni sub 0 sub . sub 9 sub 4 sub 5 Pt sub 0 sub . sub 0 sub 5 sub 5 Si solid solutions were formed when the samples were annealed at high temperatures and the lattice parameters of Ni sub 0 sub . sub 9 sub 4 sub 3 Pd sub 0 sub . sub 0 sub 5 sub 7 Si were calculated according to Vegard's law. The NiSi thermal stability was enhanced by interposing a Pd or Pt interlayer, and the sample with the Pt interlayer had the highest NiSi thermal stability among all the samples studied. This is attributed to the reduction of the interface energy between NiSi and Si substrates and the decrease of the driving force for the nucleation of NiSi sub 2 , induced by formation of the NiSi(200) preferred orientation and the solid solution respectively.

  8. EFFECT OF pH ON ELECTROLESS Ni-P COATING OF CONDUCTIVE AND NON-CONDUCTIVE MATERIALS

    Directory of Open Access Journals (Sweden)

    Subrata Roy

    2011-12-01

    Full Text Available Electroless nickel-phosphorus (Ni-P coating of carbon steel as well as a polypropylene substrate was conducted using sodium hypophosphite as a reducing agent in alkaline media. The influence of pH on coating appearances and the properties of the coatings for both steel and the polypropylene substrate were studied. A nickel-phosphorus coating of good appearance was obtained in the pH range between 5.5 and 12.5 on the carbon steel substrate and between 8.5 and 12 on the polypropylene substrate. The percentage of Ni content in the coating increased with increasing pH of the bath solution. A smooth, uniform microstructure was found in the coating deposited in relatively lower pH solutions compared to higher pH baths. The microhardness of the Ni-P coating decreased with an increasing percentage Ni content in the deposit.

  9. Magnetic Properties of Grain Boundaries of Nanocrystalline Ni and of Ni Precipitates in Nanocrystalline NiCu Alloys

    International Nuclear Information System (INIS)

    Perturbed γγ-angular correlation spectroscopy (PAC) was used to investigate nanocrystalline Ni and NiCu alloys, which are prepared by pulsed electrodeposition (PED). Using diffusion for doping nanocrystalline Ni with 111In four different ordered grain boundary structures are observed, which are characterized by unique electric field gradients. The incorporation of 111In on substitutional bulk sites of Ni is caused by moving grain boundaries below 1000 K and by volume diffusion above 1000 K. The nanocrystalline NiCu alloys prepared by PED are microscopically inhomogeneous as observed by PAC. In contrast, this inhomogeneity cannot be detected by X-ray diffraction. The influence of the temperature of the electrolyte, the current density during deposition, and the optional addition of saccharin to the electrolyte on the homogeneity of nanocrystalline NiCu alloys was investigated.

  10. Magnetic Properties of Grain Boundaries of Nanocrystalline Ni and of Ni Precipitates in Nanocrystalline NiCu Alloys

    Science.gov (United States)

    Wolf, H.; Guan, Z.; Li, X.; Wichert, Th.

    2001-11-01

    Perturbed γγ-angular correlation spectroscopy (PAC) was used to investigate nanocrystalline Ni and NiCu alloys, which are prepared by pulsed electrodeposition (PED). Using diffusion for doping nanocrystalline Ni with 111In four different ordered grain boundary structures are observed, which are characterized by unique electric field gradients. The incorporation of 111In on substitutional bulk sites of Ni is caused by moving grain boundaries below 1000 K and by volume diffusion above 1000 K. The nanocrystalline NiCu alloys prepared by PED are microscopically inhomogeneous as observed by PAC. In contrast, this inhomogeneity cannot be detected by X-ray diffraction. The influence of the temperature of the electrolyte, the current density during deposition, and the optional addition of saccharin to the electrolyte on the homogeneity of nanocrystalline NiCu alloys was investigated.

  11. Effects of Sodium Citrate Concentration on Electroless Ni-Fe Bath Stability and Deposition

    Science.gov (United States)

    Jung, Myung-Won; Kang, Sung K.; Lee, Jae-Ho

    2014-01-01

    In this research, electroless Ni-Fe bath stability and deposition characteristics were investigated for various sodium citrate concentrations. Complexing agents such as sodium citrate are one of the main components of such electroless plating baths. Since they could play various roles such as maintaining pH stability, preventing precipitation of metal salts, and reducing the concentrations of free metal ions, the concentration of complexing agents in the plating bath is an important parameter for electroless deposition processes. In this research, unstable baths were obtained for insufficient sodium citrate concentrations, and these phenomena were analyzed with ChemEQL. Moreover, the deposition characteristics of electroless Ni-Fe for under bump metallurgy diffusion barriers were also investigated using energy-dispersive spectroscopy and field-emission scanning electron microscopy.

  12. Stability of Evolving Agent Populations

    CERN Document Server

    Briscoe, G

    2007-01-01

    Stability is perhaps the most desired feature in the systems that we design. It is important for us to be able to predict the response of a Multi-Agent System (MAS) to various environmental conditions prior to its actual deployment. The Chli-DeWilde agent stability measure views a MAS as a discrete time Markov chain with a potentially unknown transition probabilities. A MAS is considered to be stable when its state, a stochastic process, has converged to an equilibrium distribution. We investigate an extension of their agent stability definition to include MASs with evolutionary dynamics, focusing on evolving agent populations. Additionally, using our extended agent stability measure, we construct an entropy-based definition for the degree of instability. An example system, the Digital Ecosystem, is considered in detail to investigate the stability of an evolving agent population through simulations. The results are consistent with the original Chli-DeWilde measure.

  13. Agent-based enterprise integration

    Energy Technology Data Exchange (ETDEWEB)

    N. M. Berry; C. M. Pancerella

    1998-12-01

    The authors are developing and deploying software agents in an enterprise information architecture such that the agents manage enterprise resources and facilitate user interaction with these resources. The enterprise agents are built on top of a robust software architecture for data exchange and tool integration across heterogeneous hardware and software. The resulting distributed multi-agent system serves as a method of enhancing enterprises in the following ways: providing users with knowledge about enterprise resources and applications; accessing the dynamically changing enterprise; locating enterprise applications and services; and improving search capabilities for applications and data. Furthermore, agents can access non-agents (i.e., databases and tools) through the enterprise framework. The ultimate target of the effort is the user; they are attempting to increase user productivity in the enterprise. This paper describes their design and early implementation and discusses the planned future work.

  14. Odor Classification using Agent Technology

    Directory of Open Access Journals (Sweden)

    Sigeru OMATU

    2014-03-01

    Full Text Available In order to measure and classify odors, Quartz Crystal Microbalance (QCM can be used. In the present study, seven QCM sensors and three different odors are used. The system has been developed as a virtual organization of agents using an agent platform called PANGEA (Platform for Automatic coNstruction of orGanizations of intElligent Agents. This is a platform for developing open multi-agent systems, specifically those including organizational aspects. The main reason for the use of agents is the scalability of the platform, i.e. the way in which it models the services. The system models functionalities as services inside the agents, or as Service Oriented Approach (SOA architecture compliant services using Web Services. This way the adaptation of the odor classification systems with new algorithms, tools and classification techniques is allowed.

  15. Mixing behaviors in Cu/Ni and Ni/V multilayers induced by cold rolling

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Z. [Department of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Avenue, Madison, WI 53706 (United States); Perepezko, J.H., E-mail: perepezk@engr.wisc.edu [Department of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Avenue, Madison, WI 53706 (United States); Larson, D.; Reinhard, D. [CAMECA Instruments Inc., 5500 Nobel Drive, Madison, WI 53711 (United States)

    2015-09-15

    Highlights: • The composition profiles of Cu/Ni and Ni/V multilayers were investigated. • A compositional oscillation was observed in the Cu/Ni composition profile. • The Ni/V composition profile varies smoothly and continuously between end members. • The effective diffusion coefficients were enhanced by about 30 order of magnitudes. • The effective temperature were estimated as 946 K for Cu/Ni and 936 K for Ni/V. - Abstract: Multilayers of Cu60/Ni40 and Ni70/V30 foil arrays were cold rolled in order to study the transformation reactions and mixing behaviors induced by deformation. Upon cold rolling, the layer thicknesses were refined to about 20 nm and solid solution phases were induced from pure end members (i.e. Cu, Ni and V) in both cases. The composition profiles for Cu/Ni and Ni/V multilayer samples at the deformation level where the solid solution phases coexist with end members were investigated by means of atom probe tomography and electron energy loss spectrum, respectively. An oscillation in the composition of Cu–Ni solid solution phase was observed, however the composition profile of Ni/V shows a smoothly varying curve between the end members. The effective diffusion coefficients were promoted by about 30 orders of magnitude for both Cu/Ni and Ni/V compared to room temperature diffusion. The effective temperature for Cu/Ni multilayers after 36 passes and Ni/V after 60 passes are estimated as 946 K and 936 K respectively.

  16. Agent 与Multi-Agent System 技术研究%The Research on Agent and Multi-Agent System

    Institute of Scientific and Technical Information of China (English)

    党建武; 韩泉叶; 崔文华

    2002-01-01

    分析了Multi-Agent System 涉及的相关问题,在普通的Multi-Agent System的组织结构的基础上提出了管理服务机构,中介服务机构和主控流动服务机构的Multi-Agent System,并对不同组织结构的Agent之间的协同进行了讨论.

  17. Mobile Agents for Digital Signage

    OpenAIRE

    SATOH, Ichiro

    2010-01-01

    International audience This paper presents an agent-based framework for building and operating context-aware multimedia content on digital signage in public/private spaces. It enables active and multimedia content to be composed from mobile agents, which can travel from computer to computer and provide multimedia content for advertising or user-assistant services to users. The framework automatically deploys their agents at computers near to their current positions to provide advertising o...

  18. An agent for ecological deliberation

    OpenAIRE

    Debenham, John; Sierra, Carles

    2010-01-01

    An agent architecture supports the two forms of deliberation used by human agents. Cartesian, constructivist rationalism leads to game theory, decision theory and logical models. Ecological rationalism leads to deliberative actions that are derived from agents’ prior interactions and are not designed; i.e., they are strictly emergent. This paper aims to address the scant attention paid by the agent community to the predominant form of deliberation used by mankind.

  19. Radioactive scanning agents with stabilizer

    International Nuclear Information System (INIS)

    Stable compositions useful as technetium 99-based scintigraphic agents comprise gentisyl alcohol or a pharmaceutically-acceptable salt or ester thereof in combination with a pertechnetate reducing agent or dissolved in pertechnetate-99m (sup(99m)TcOsub(4)sup(-)) solution. The compositions are especially useful in combination with a phosphate or phosphonate material that carries the radionuclide to bone, thus providing a skeletal imaging agent

  20. Research on Negotiating Agent Development

    Institute of Scientific and Technical Information of China (English)

    WEI Ding-guo; PENG Hong

    2004-01-01

    The paper presents a flexible and effective method of development of negotiating agents.A strategy specification, which is specified by a state chart and defeasible rules, can be dynamically inserted into an agent shell incorporating a state chart interpreter and a defeasible logic inference engine, in order to yield a desirable agent.The set of desirable criteria and rules is required to be justified with different context of the application.