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1J. Aleksic ; S. Ansoldi ; L. A. Antonelli ; P. Antoranz ; A. Babic ; P. Bangale ; J. A. Barrio ; J. Becerra Gonzalez ; W. Bednarek ; E. Bernardini ; B. Biasuzzi ; A. Biland ; O. Blanch ; S. Bonnefoy ; G. Bonnoli ; F. Borracci ; T. Bretz ; E. Carmona ; A. Carosi ; P. Colin ; E. Colombo ; J. L. Contreras ; J. Cortina ; S. Covino ; P. Da Vela ; F. Dazzi ; A. De Angelis ; G. De Caneva ; B. De Lotto ; E. de Ona Wilhelmi ; C. Delgado Mendez ; D. Dominis Prester ; D. Dorner ; M. Doro ; S. Einecke ; D. Eisenacher ; D. Elsaesser ; M. V. Fonseca ; L. Font ; K. Frantzen ; C. Fruck ; D. Galindo ; R. J. Garcia Lopez ; M. Garczarczyk ; D. Garrido Terrats ; M. Gaug ; N. Godinovic ; A. Gonzalez Munoz ; S. R. Gozzini ; D. Hadasch ; Y. Hanabata ; M. Hayashida ; J. Herrera ; D. Hildebrand ; J. Hose ; D. Hrupec ; W. Idec ; V. Kadenius ; H. Kellermann ; K. Kodani ; Y. Konno ; J. Krause ; H. Kubo ; J. Kushida ; A. La Barbera ; D. Lelas ; N. Lewandowska ; E. Lindfors ; S. Lombardi ; F. Longo ; M. Lopez ; R. Lopez-Coto ; A. Lopez-Oramas ; E. Lorenz ; I. Lozano ; M. Makariev ; K. Mallot ; G. Maneva ; N. Mankuzhiyil ; K. Mannheim ; L. Maraschi ; B. Marcote ; M. Mariotti ; M. Martinez ; D. Mazin ; U. Menzel ; J. M. Miranda ; R. Mirzoyan ; A. Moralejo ; P. Munar-Adrover ; D. Nakajima ; A. Niedzwiecki ; K. Nilsson ; K. Nishijima ; K. Noda ; R. Orito ; A. Overkemping ; S. Paiano ; M. Palatiello ; D. Paneque ; R. Paoletti ; J. M. Paredes ; X. Paredes-Fortuny ; M. Persic ; J. Poutanen ; P. G. Prada Moroni ; E. Prandini ; I. Puljak ; R. Reinthal ; W. Rhode ; M. Ribo ; J. Rico ; J. Rodriguez Garcia ; S. Rugamer ; T. Saito ; K. Saito ; K. Satalecka ; V. Scalzotto ; V. Scapin ; C. Schultz ; T. Schweizer ; S. N. Shore ; A. Sillanpaa ; J. Sitarek ; I. Snidaric ; D. Sobczynska ; F. Spanier ; V. Stamatescu ; A. Stamerra ; T. Steinbring ; J. Storz ; M. Strzys ; L. Takalo ; H. Takami ; F. Tavecchio ; P. Temnikov ; T. Terzic ; D. Tescaro ; M. Teshima ; J. Thaele ; O. Tibolla ; D. F. Torres ; T. Toyama ; A. Treves ; M. Uellenbeck ; P. Vogler ; R. Zanin ; M. Kadler ; R. Schulz ; E. Ros ; U. Bach ; F. Krauss ; J. Wilms
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-11-08Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Staff View
Publication Date: 2018-03-29Publisher: The Company of BiologistsPrint ISSN: 0950-1991Electronic ISSN: 1477-9129Topics: BiologyPublished by: -
3Lord, J. S. ; Kubo, H. ; Riedi, P. C. ; Walker, M. J.
[S.l.] : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The 59Co NMR has been measured for superlattices of Co(15 A(ring))/Cu (7 or 18 A(ring)) grown with either a Au or Cu buffer layer between the substrate and the superlattice. As was reported earlier the Co (15 A(ring))/Cu (7 A(ring)) (Au) superlattice has the largest magnetoresistance (ΔR/R∼26%) known for a MBE grown Co/Cu multilayer. The NMR measurements show that the Au-based superlattices have very flat interfaces and (111) orientation, two features which were supposed to preclude a large value of ΔR/R, and that the average strain in the Co layers is greater for a Au than a Cu buffer layer.Type of Medium: Electronic ResourceURL: -
4Staff View
ISSN: 1089-7674Source: AIP Digital ArchiveTopics: PhysicsNotes: In JT-60U [Horiike et al., Fusion Eng. Des. 16, 285 (1991)] extension of high performance plasmas toward high density, high radiation-loss-power fraction and high fuel purity has been explored by pellet injection, Ar injection and study of impurity production. By pellet injection from the high-field-side, the density range for the high-poloidal-beta high-confinement mode plasmas with edge localized modes (high-βp ELMy H-mode plasmas) has been extended to 70% of the Greenwald density (nGW). In ELMy H-mode plasmas with Ar injection, confinement time given by the International Thermonuclear Experimental Reactor ELMy H-mode scaling IPB98(y,2), electron density of 0.8 nGW and radiation-loss-power fraction of 0.8 have been achieved simultaneously. Type-I ELMs disappeared, and the heat flux to the divertor plates due to ELMs decreased by a factor of 10. At the carbon divertor plates, the chemical sputtering yields due to C2Hx/C2Dx (where x=2, 4, and 6) production in addition to CH4/CD4 production have been measured systematically. It was shown that the C2Hx/C2Dx production was dominant in the low temperature divertor plasmas. © 2002 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
5Ongena, J. ; Budny, R. ; Dumortier, P. ; Jackson, G. L. ; Kubo, H. ; Messiaen, A. M. ; Murakami, M. ; Strachan, J. D. ; Sydora, R. ; Tokar, M. ; Unterberg, B. ; Samm, U. ; Vandenplas, P. E. ; Weynants, R. ; Asakura, N. ; Brix, M. ; Charlet, M. ; Coffey, I. ; Cordey, G. ; Erents, S. K. ; Fuchs, G. ; von Hellermann, M. ; Hillis, D. L. ; Hogan, J. ; Horton, L. D.
[S.l.] : American Institute of Physics (AIP)
Published 2001Staff ViewISSN: 1089-7674Source: AIP Digital ArchiveTopics: PhysicsNotes: An overview is given of recent advances toward the realization of high density, high confinement plasmas with radiating mantles in limiter and divertor tokamaks worldwide. Radiatively improved mode discharges on the Torus Experiment for Technology Oriented Research 94 (TEXTOR-94) [Proceedings of the 16th IEEE Symposium on Fusion Engineering, 1995 (Institute for Electrical and Electronics Engineers, Piscataway, NJ, 1995), p. 470] have recently been obtained at trans-Greenwald densities (up to n¯/nGW=1.4) with high confinement mode free of edge localized modes (ELM-free H-mode) confinement quality. Experiments in DIII-D [J. Luxon et al., Proceedings of the 11th IAEA Conference on Plasma Physics and Controlled Nuclear Fusion Research (International Atomic Energy Association, Vienna, 1987), Vol. 1, p. 159] divertor plasmas with a low confinement mode edge have confirmed the dramatic changes in confinement observed with impurity seeding on TEXTOR-94. Recent experiment with impurity seeding on the Joint European Torus [Rebut et al., Fusion Eng. Des. 22, 7 (1993)], and the Japanese Atomic Energy Research Institute Tokamak 60 Upgrade [Horiike et al., Fusion Eng. Des. 16, 285 (1991); Hosogane et al., Proceedings of the 16th IAEA Conference on Plasma Physics and Controlled Nuclear Fusion Research Montreal, 1987 (International Atomic Energy Association, Vienna, 1987), Vol. 3, p. 555] have extended high confinement in ELMy H-mode plasmas to higher densities. Finally, recent progress in the physical understanding of radiating mantle plasmas is summarized. © 2001 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
6Koide, Y. ; Sakasai, A. ; Sakamoto, Y. ; Kubo, H. ; Sugie, T.
[S.l.] : American Institute of Physics (AIP)
Published 2001Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: Recent development of the JT-60U charge exchange recombination spectroscopy (CXRS) diagnostic system is reported. The measurements of the radial profiles of the ion temperatures, the toroidal and poloidal rotation velocities, and the impurity density are based on CXR spectra of fully stripped carbon ions induced by neutral beam injection. Measurements are made simultaneously at 59 spatial points (23 toroidal and 36 poloidal) with a time resolution of 1/60 s throughout the full discharge pulse of 15 s. Considerable effort has been expended to ensure the automatic provision of reliable profile data, where the mechanical components of the system must cope with both a baked tokamak vessel (∼300 °C) and an expected disruption-induced acceleration of up to 60 g, where g denotes the gravitational acceleration, i.e., 9.8 m2/s. © 2001 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
7Gotoh, Y. ; Kubo, H. ; Tsuji, H. ; Ishikawa, J.
[S.l.] : American Institute of Physics (AIP)
Published 2000Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: The performance of a compact microwave ion source developed for extremely low energy ion extraction was measured. The ion source was modified to be fitted for the ion extraction at the voltage lower than 100 V. The current–voltage characteristics, mass spectrum, absolute ion energy, and energy spread of argon ion beam were estimated with a sector magnet. The results showed that the mass spectrum showed a clear separation of singly charged ions and doubly charged ions even at the extraction voltage of 4 V. Mass separated Ar+ current of 0.5 nA at 4 V extraction was obtained. An excess ion energy due to presence of plasma potential was 14 eV at the pressure of 5×10−3 Pa, and 66 eV at 9×10−4 Pa. Energy spread was narrower than 12 eV, from rough estimate of the mass spectrum. These results summarize that the present ion source can be used for extremely low energy ion irradiation system. © 2000 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
8Gotoh, Y. ; Fujimori, Y. ; Kubo, H. ; Tsuji, H. ; Ishikawa, J.
[S.l.] : American Institute of Physics (AIP)
Published 1998Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: A compact microwave ion source for the research of low-energy ion beam application such as ion beam assisted deposition or ion beam sputtering has been developed. The developed ion source is based on the previously reported compact microwave ion source, which was developed for higher-energy extraction. In order to extract the ions with a lower energy, it is necessary to lower the plasma density. The present ion source possesses a plasma expansion cup in order to make the plasma thinner. As a consequence of the thinner plasma, the extractable current becomes lower than that of the thicker plasma, thus the source has multiple extraction apertures. Current–voltage characteristics of the ion source were measured with an extraction system with 37 apertures and the extraction gap of 1.5 mm. At the voltage of 500 V, the current of the extraction electrode decreased rapidly and it was shown that at this voltage, an optimum ion optics was achieved. The argon ion current of 0.4 mA with the energy of 500 eV was extracted. The gas pressure in the processing chamber could be reduced to 5×10−4 Pa. © 1998 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
9Batzer, R. S. ; Yen, Bi Ming ; Liu, Donhang ; Chen, Haydn ; Kubo, H. ; Bai, G. R.
[S.l.] : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Epitaxial lead titanate (PbTiO3) thin films were grown on MgO(100) single-crystal substrate by metal-organic chemical-vapor deposition at a growth temperature of 650 °C. The films were dense, stoichiometric, and epitaxial. The domain structure was studied via x-ray-diffraction ω scans and in-plane Φ scans. Existence of c and a domains in the PbTiO3 films was evident. Consistent with literature reports, the a domains were found to have four variants 90° apart from each other, tilting about 2.2° away from the surface normal. The population ratio between c and a domain of the PbTiO3 films was determined to be approximately 2.3 to 1. The domain structure was found to be stable and reproducible during repeated thermal cycling above and below Tc. Furthermore, lattice parameters and Curie temperatures of PbTiO3 thin films were measured during the thermal cycles. The lattice parameters were found to be smaller and the Curie temperatures were shifted lower than the corresponding bulk values. This is attributed to the film stress effect. A theory based on the Landau–Ginzburg–Devonshire function has been developed to explain the shift of the Curie temperatures. © 1996 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
10Thomson, T. ; Kubo, H. ; Lord, J. S. ; Riedi, P. C. ; Walker, M. J.
[S.l.] : American Institute of Physics (AIP)
Published 1994Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: An initial study of the field dependence of 59Co nuclear magnetic resonance (NMR) has been undertaken for two Co/Cu(111) multilayer films grown by molecular beam epitaxy. The multilayer structure of the films was nominally identical, [Co(15 A(ring))/Cu(7 A(ring))]×20, however by growing the multilayers with similar structures on different buffer layers, Cu(200 A(ring)) and Au(10 A(ring)), saturation magnetoresistances ΔR/R of 4% and 22%, respectively, were obtained. The NMR signal in ferromagnetic materials arises due to the enhancement effect from the electronic magnetization. This enhancement effect is therefore a function of the domain structure and any external magnetic field. By applying a simple model of how the NMR enhancement factor varies with applied field, in the absence of a domain structure, the anisotropy fields at the interfaces and in the bulk were determined separately at T=4.2 K. These were then compared with the coercive field obtained from magnetization measurements. Our results show that at low temperature the anisotropy field at the interfaces is approximately equal to the coercivity obtained from magnetization measurements (260 Oe), while in the bulk the anisotropy field was found to be ∼550 Oe for the low magnetoresistance sample with ΔR/R=4%, and ∼1230 Oe for the high magnetoresistance sample with ΔR/R=22%.Type of Medium: Electronic ResourceURL: -
11Yatsui, K. ; Grigoriu, C. ; Kubo, H. ; Masugata, K. ; Shimotori, Y.
Woodbury, NY : American Institute of Physics (AIP)
Published 1995Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Nanosize powders of alumina have been synthesized by high-density ablation plasma produced by the irradiation of an intense, pulsed, light-ion beam on an aluminum target in oxygen. Diameters of the powders, which are observed to be spherical, are typically 5–25 nm. At 1 Torr of oxygen, nanosize powders of aluminum are synthesized with those of a small amount of γ-alumina. At 10 Torr of oxygen, on the other hand, γ-alumina powders are produced with a small amount of aluminum powders. Annealing characteristics in nitrogen have also been studied on the transition from γ- to α-alumina. © 1995 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
12Yonehara, H. ; Suzuki, H. ; Ueyama, Y. ; Aoki, T. ; Fukami, K. ; Tani, N. ; Hayashi, S. ; Kaneta, T. ; Abe, H. ; Okanishi, K. ; Ohtsuchi, S. ; Hosoda, N. ; Hirata, Y. ; Nagafuchi, T. ; Chugun, T. ; Kubo, H. ; Yokomizo, H.
[S.l.] : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: The construction of the SPring-8 booster synchrotron was started in 1993. The synchrotron has a two-fold symmetric lattice composed of 40 FODO cells. There are 30 normal cells and 2 straight sections, and it is composed of 64 bending magnets. The integral values of the magnetic field of the bending magnets were measured, and adequate results were obtained. The power supply of the bending magnets, which must be operated following a trapezoidal excitation-curve of the output current, is being constructed and tested now. This report presents the results of the integral values of the magnetic field of the bending magnets and the excitation-curve measurement of the power supply. © 1996 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
13Kubo, H. ; Sugie, T. ; Sakasai, A. ; Koide, Y. ; Nishino, N. ; Yokomizo, H. ; Takeuchi, H. ; JT-60 Team ; Tanaka, K. ; Maezawa, H. ; Yamaguchi, N.
[S.l.] : American Institute of Physics (AIP)
Published 1988Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: In order to study impurity behavior on the JT-60 plasma, a spectroscopic diagnostic system, which is capable of measuring many spectra of impurity ions and their spatial distributions simultaneously, has been developed. This system consists of interchangeable unit-type spectrographs which have different lines of sight. Four types of grazing incidence spectrographs are prepared as unit-type spectrographs. These spectrographs cover the nominal wavelength regions 0.5–5, 0.5–50, 2.0–50, and 50–122 nm, respectively, and have holographic gratings with flat focal fields. Image-intensified 1024- or 512-channel photodiode arrays are used as detectors for all spectrographs. Four unit-type spectrographs are used for observing the main plasma, and two unit-type spectrographs are used for observing the plasma near the null point of the diverted discharge. One of these spectrographs has been calibrated absolutely in the wavelength region 27.5–120 nm using synchrotron radiation from the Photon Factory (National Laboratory for High Energy Physics).Type of Medium: Electronic ResourceURL: -
14Tohda, Y. ; Kubo, H. ; Ito, M. ; Fukuoka, M. ; Nakajima, S.
Oxford, UK : Blackwell Science, Ltd
Published 2001Staff ViewISSN: 1365-2222Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Lesions of trachea cuticles are a pathological histological characteristic of bronchial asthma. Furthermore, collected tracheal cuticles desquamated from the respiratory tract are found in patients’ sputum when asthma attacks occur or after the induction of allergen inhalation. From these facts, it is assumed that desquamation of trachea cuticle cells is a pathological symptom of bronchial asthma. However, there has not been any chronological report of desquamation of trachea cuticles through the process of bronchial asthma attacks.For this report, we made an experimental bronchial asthma model using guinea pigs, and conducted chronological examinations of trachea cuticle lesions related to pathological symptoms of bronchial asthma using a transmission electron microscope and a scanning electron microscope.The experimental asthma models were made by injection of ovalbumin into the abdominal cavity of guinea pigs. Then the airway responses to inhaled aerosolized ovalbumin were induced. The trachea were enucleated and examined under an optical microscope, a transmission electron microscope (hereafter abbreviated as TEM), and a scanning electron microscope (hereafter abbreviated as SEM) after 1, 2, 4, 8, 12, 24 h and 7 days after the immediate airway responses.Intercellular oedema of ciliated epithelium was observed in the sensitization groups immediately after the immediate airway response. SEM observation revealed increased mucus secretion and shortening of cilium. A slight case of desquamation or deciduation of ciliated epithelium was also beginning to appear. TEM observation revealed a dilation of ciliated epithelium intervals. Infiltration of eosinophilic leucocytes was already detectable beneath the ciliated epithelium. The degree of ciliated epithelium desquamation and infiltration of eosinophilic leucocytes progressed with time. When the late airway response occurred 4 hours later, eosinophilic leucocytes had increased drastically, and ciliate epithelium had desquamated to the extent that basal cells were exposed. Seven days after the immediate airway response, epithelium intercellular oedema had improved, and cilium had been reproduced.These results suggest that desquamation of epithelium caused by trachea cuticle lesions appears at an early stage of an asthma attack, owing to the contraction of the trachea, and that the damage is intensified by the infiltration of eosinophilic leucocytes.Type of Medium: Electronic ResourceURL: -
15Staff View
ISSN: 0003-2697Keywords: fluorogenic reagent-containing mobile phase ; fluorometric determination ; high-performance liquid chromatography ; ninhydrin ; postcolumn derivatization ; streptomycinSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
16Tanimori, T. ; Naito, T. ; Yoshida, T. ; Yanagita, S. ; Mori, M. ; Edwards, P. G. ; Asahara, A. ; Bicknell, G. V. ; Gunji, S. ; Hara, S. ; Hara, T. ; Hayashi, S. ; Itoh, C. ; Kabuki, S. ; Kajino, F. ; Katagiri, H. ; Kataoka, J. ; Kawachi, A. ; Kifune, T. ; Kubo, H. ; Kushida, J. ; Maeda, S. ; Maeshiro, A. ; Matsubara, Y. ; Mizumoto, Y.
[s.l.] : Macmillian Magazines Ltd.
Published 2002Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Protons with energies up to ∼1015 eV are the main component of cosmic rays, but evidence for the specific locations where they could have been accelerated to these energies has been lacking. Electrons are known to be accelerated to cosmic-ray energies in supernova ...Type of Medium: Electronic ResourceURL: -
17Ikebe, Y. ; Ezawa, H. ; Fukazawa, Y. ; Hirayama, M. ; Ishisaki, Y. ; Kikuchi, K. ; Kubo, H. ; Makishima, K. ; Matsushita, K. ; Ohashi, T. ; Takahashi, T. ; Tamura, T.
[s.l.] : Nature Publishing Group
Published 1996Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] X-ray-emitting diffuse plasmas of temperature T = 107-108 K are widely found in elliptical galaxies3"5 and clusters of galaxies2'6"9. As these plasmas are thought to be hydrostatically trapped by gravity, their X-ray measurements yield direct information on the total (visible plus dark) gravitating ...Type of Medium: Electronic ResourceURL: -
18Staff View
ISSN: 0022-3697Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
19Staff View
ISSN: 0003-2670Keywords: Copper ; Coulometry ; Liquid chromatography ; Peptides ; Solid-phase reactorSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
20Staff View
ISSN: 0009-8981Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineType of Medium: Electronic ResourceURL: