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  • 1
    Electronic Resource
    Electronic Resource
    Analysis of orientation distribution in YBa2Cu3O7−x polycrystals by electron channeling patterns (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 6341-6346 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A unit standard map for YBa2Cu3O7−x superconductors was constructed and indexed from a series of electron channeling patterns (ECPs). (001) pole figures of YBa2Cu3O7−x tapes and bulk specimens with various values of critical current density (Jc) were drawn by using the map covering [001-1¯1¯0-1¯10] stereographic quadrant and ECPs taken from individual grains of the specimens. It was found that preferred orientation of (001) formed in the tape with a decreasing thickness of the tape, which raised Jc significantly. It is concluded that the ECP technique is very useful for the analysis of orientation distribution in small-sized YBa2Cu3O7−x specimens such as tapes or thin films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346879
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  • 2
    Electronic Resource
    Electronic Resource
    A global dynamo in a reversed-field pinch plasma (1994)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 1 (1994), S. 2876-2881 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is found that a reversed-field pinch (RFP) dynamo uniformly generates most of the toroidal flux in a RFP plasma with a high magnetic Reynolds (S) number. Hereafter, this is referred to as the global dynamo. The toroidal flux generated by the global dynamo is proportional to the plasma current. The effective inductance in a RFP plasma increases with S number and remains constant against the changing plasma current. This means that the pinch parameter aitch-theta is held constant, that is, the global dynamo has a self-organizing effect sustaining a particular RFP configuration. By comparing simulation results and analysis of magnetic fluctuations, it is confirmed that a global dynamo is generated by the nonlinear evolution of the single-helicity of the m=1 mode alone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870527
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  • 3
    Electronic Resource
    Electronic Resource
    A field-reversal mechanism in a reversed-field pinch (1995)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 2 (1995), S. 1182-1191 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A field-reversal mechanism in a reversed-field pinch (RFP) is studied through a three-dimensional resistive compressible magnetohydrodynamic (MHD) simulation of the single- and multiple-helicity modes. As the magnetic Reynolds number increases, the m=1 fluctuating magnetic field grows exponentially and extends radially, and then the flow begins to form the vortex structure around the core of the plasma. This radial flow acts such as to push out the toroidal magnetic field. As the dynamo electric field induced by this interaction increases near the core of the plasma, the toroidal magnetic field at the wall decreases toward the negative value and the toroidal magnetic field reverses. As a result, it is found that the field reversal is achieved by the single-helicity evolution of the m=1 mode alone, without the (m=0; n≠0) modes, and the interaction of the radial flow and the toroidal magnetic field is the most dominant source for the dynamo action on the field-reversal process. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.871396
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  • 4
    Electronic Resource
    Electronic Resource
    Macroscopic behavior and discrete dynamo in high-aitch-theta reversed-field pinch discharges (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 1836-1841 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetohydrodynamic (MHD) activity and the discrete dynamo in high-aitch-theta reversed-field pinch (RFP) discharges are studied through comparisons with those in normal-aitch-theta RFP discharges, where aitch-theta=Bθ(a)/〈Bz〉 is the pinch parameter. In high-aitch-theta RFP discharges, the mode coupling of m=1 is enhanced by the high magnetic shear configuration, and the MHD activity is more turbulent as compared with that in normal-aitch-theta RFP discharges. Furthermore, the discrete increase of the toroidal magnetic flux is obviously observable. The increase of the toroidal magnetic flux generated by the discrete dynamo, which has an asymmetric structure in the toroidal direction, is only 1%–2% of the whole toroidal magnetic flux. The experimental results indicate that the discrete dynamo does not play an essential role in the RFP dynamo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860820
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  • 5
    Electronic Resource
    Electronic Resource
    A possible mechanism of current termination in a reversed field pinch (1989)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 1 (1989), S. 2050-2053 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A rapid growth of magnetic fluctuations resulting from the m=1 and m=2 modes and succeeding stop of rotation of these modes have been found as the precursor phenomena of current termination in the STP-3(M) [Trans. Inst. Elec. Eng. Jpn. 107-B, 469 (1987)] reversed field pinch. By deepening the field reversal at the wall, these precursors disappear and the current duration becomes much longer. It is found that sudden current termination is caused by a rapid growth of resistive tearing modes mainly because of nonlinear coupling of the m=1 mode.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.859205
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  • 6
    Electronic Resource
    Electronic Resource
    Simulation study of the dynamo structure in the reversed-field pinch (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 1263-1269 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The dynamo structure in the reversed-field pinch (RFP) is studied through the nonlinear dynamics of a single-helicity mode. Simulation is concentrated upon the physical structure of nonlinear interactions of the plasma flow and magnetic fluctuation. The result indicates that when the initial equilibrium profile is deformed by resistive diffusion, the radial flow is driven near the core of the plasma. As this flow forms a vortex structure and magnetic fluctuation grows radially, the dynamo electric field is helically induced just inside the reversal surface and then the toroidal flux is increased. This dynamo electric field correlates to the nonlinear evolution of the kinetic energy of the m=1 mode, and the increase of the toroidal flux originates in the growth process of the magnetic energy of this mode. Consequently, the RFP configuration can be sustained by the single-helicity evolution of the m=1 mode alone, and the electric field induced by the interactions of the toroidal velocity and the radial magnetic field is the most dominant source on the dynamo action.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860916
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  • 7
    Electronic Resource
    Electronic Resource
    Digital chemical vapor deposition of SiO2 (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 1096-1098 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The repetitive cycles of a few monolayers hydrogenated silicon deposition and its oxidation has been employed for the growth of SiO2. The surface reaction is promoted by an alternate irradiation of silicon hydride radical beam produced by the upstream pulsed microwave discharge of SiH4 and discharged oxygen beam. The deposition rate is controlled by the flow velocity of silane gas jet and substrate temperature. It is shown that the deposition species ejected with supersonic velocity into a high vacuum reactor conformably fills the SiO2 film into a deep Si trench.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104284
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  • 8
    Electronic Resource
    Electronic Resource
    Electroencephalographic arousal response during tracheal intubation and laryngeal mask airway insertion after induction of anaesthesia with propofol (1999)
    Oxford : Blackwell Science Ltd
    Anaesthesia 54 (1999), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Laryngoscopy and tracheal intubation, or insertion of a laryngeal mask airway may lead to an arousal response on the electroencephalogram. We studied whether more intense stimulation (laryngoscopy and tracheal intubation) causes a greater arousal response than less intense stimulation (laryngeal mask airway insertion). Thirty-four patients (ASA I–II) were anaesthetised with propofol 3 mg.kg−1, followed by vecuronium 0.15 mg.kg−1 and a propofol infusion of 10 mg.kg−1.h−1. Three minutes after induction of anaesthesia, either laryngoscopy and tracheal intubation (n = 18), or laryngeal mask airway insertion (n = 16) was performed. Laryngoscopy and tracheal intubation caused a significantly greater increase in blood pressure (but not heart rate) than laryngeal mask airway insertion (p 〈 0.05). Electroencephalogram responses were not different. More intense stimulation does not cause a greater arousal response during propofol anaesthesia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2044.1999.00944.x
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  • 9
    Electronic Resource
    Electronic Resource
    Isolation of a novel carlavirus from melon in Brazil (2003)
    Oxford, UK : Blackwell Science Ltd
    Plant pathology 52 (2003), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.2003.00906.x
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of nitrous oxide on haemodynamic and electroencephalographic responses induced by tetanic electrical stimulation during propofol anaesthesia (1999)
    Oxford : Blackwell Science Ltd
    Anaesthesia 54 (1999), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We studied the effect of nitrous oxide on haemodynamic and electroencephalographic responses caused by noxious stimulation during propofol anaesthesia. Thirty-four patients (ASA I–II) were anaesthetised with propofol 3 mgkg−1 and were randomly allocated to receive either 60% nitrous oxide in oxygen or 40% oxygen in air. Anaesthesia was maintained using propofol infusion of 10 mgkg−1.h−1 for the first 10 min, 8 mgkg−1.h−1 for the next 10 min and 6 mgkg−1.h−1 thereafter. Thirty minutes after the induction of anaesthesia, tetanic electrical stimulation (80 mA, 100 Hz) was applied to the ulnar nerve. Tetanic stimulation significantly increased blood pressure and heart rate in both groups (p 〈 0.005 or less), but did not induce any arousal pattern on the electroencephalograph. Nitrous oxide significantly attenuated the tetanic stimulation-induced increase in blood pressure (p 〈 0.05 or less), but not the heart rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2044.1999.00752.x
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