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  • 1
    Electronic Resource
    Electronic Resource
    A novel nonpeptidic, orally active renin inhibitor
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 159 (1989), S. 999-1005 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0006-291X(89)92207-9
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  • 2
    Electronic Resource
    Electronic Resource
    Phase formation and magnetic properties of SmFe7Nx+αFe composite thin films (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 6585-6587 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Sm(Zr)Fe7Nx+αFe composite thin films were prepared on various substrates with differing values of thermal expansion from SmxFebalZry (11.3[less, double equals]x[less, double equals]17.8,0[less, double equals]y[less, double equals]3.2) targets by the rf sputtering method followed by annealing and nitrogenation. Their phase formation and magnetic properties were studied. All of the as-deposited films were amorphous, and the only films synthesized from the target with x=84 were crystallized into a composite of Sm(Zr)Fe7+αFe by annealing. Successive nitrogenation of the films with x=84 formed Sm(Zr)Fe7Nx+αFe composites whose grain diameter was estimated to be 30–50 nm. Despite the small coercivity of the prepared films, their recoil curves showed a remarkable spring-back phenomenon which originates in the exchange coupling between Sm(Zr)Fe7Nx and α Fe grains. The addition of Zr decreased the lattice constant, and choice of substrate did not affect the grain size. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372778
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  • 3
    Electronic Resource
    Electronic Resource
    Nanostructured soft magnetic material with low loss and low permeability (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 7103-7105 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nanostructured Fe–Cu–Nb–Si–B ribbons with relative permeability of a few hundred were prepared by using creep-induced anisotropy and their soft magnetic properties were evaluated. The observed domain pattern for an obtained ribbon suggests that magnetization process is due to the magnetization rotation mode. The variation of magnetization by its rotation results in frequency-independent behavior of the permeability up to 1 MHz with magnetic loss comparable to that of ferrite cores. A large saturation magnetization of the studied ribbons enables us to obtain the figure of merit for applications to the storage of magnetic energy being much larger than that of ferrite cores with air gaps. These results suggest that the Fe–Cu–Nb–Si–B ribbons with creep-induced anisotropy are suitable for a magnetic material for the storage of magnetic energy. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372944
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  • 4
    Electronic Resource
    Electronic Resource
    Planar shock wave generated by uniform irradiation from two overlapped partially coherent laser beams (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 2571-2575 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two partially coherent light laser beams, coupled with a random phase plate were focused at an angle of 31.7° with the centers of the beams offset by 250 μm. This produced a relatively uniform (7% root-mean-square) irradiated spot of 400 μm. When this technique was used to produce a shock wave in a copper wedge, a relatively uniform shock of 2 ns duration was produced. In addition, a multilayered flyer plate was accelerated using this method to an average speed of 21 km/s and produced a planar impact on a glass window. It is anticipated that this technique can be used to produce important multi-Mbar equation of state information in future experiments. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1342189
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  • 5
    Electronic Resource
    Electronic Resource
    New production method of 100-μm-thick grain-oriented 3% silicon steel sheets : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 4098-4100 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a new method of preparing highly oriented 3% silicon steel sheets with a thickness of 100 μm, which enables us to realize the mass production with existing manufacturing facility. In our new method, a hot-rolled silicon steel is thinned to 100 μm by a three-step rolling process with intermediate annealings and the (110)[001] is created by the final annealing taking advantage of surface energy. The obtained 100-μm-thick sheets had the Goss texture and superior soft magnetic properties (the magnetic induction at 800 A/m, B8⋅=⋅1.9 T, the coercive force 〈4 A/m). In addition, the iron loss W 15/50 at 1.5 T, 50 Hz under the applied tensile strength of 2 kg/mm2 was 0.53 W/kg. This value is less than that of the conventional (300 μm) grain-oriented silicon steels by about 37%. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.365093
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  • 6
    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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  • 7
    Electronic Resource
    Electronic Resource
    Microcracks, spall and fracture in glass: A study using short pulsed laser shock waves (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 3583-3594 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This work reports our meso mechanical study of microcrack behavior, especially the process leading from microcracking to macro failure. Using laser loading with a duration on the order of nanoseconds, spallation in a cylindrical geometry was achieved in soda-lime glass at the microcrack evolution stage. Laser induced shock waves were used to conduct crack initiation experiments for the first time. The specimens were examined after experiments and were compared with those loaded by conventional static and dynamic methods. A meso scale failure model of nucleation, growth, and percolation (NGP) is suggested based on the experiments. The NGP model is characterized by a randomly generated microcrack field and by simultaneous percolation statistics in time iteration. In most existing damage models, the statistical average of microcracks over a finite space is required in order to evaluate the damage variables. This procedure is not necessary in the NGP model. We show that the connection of microcracks can be very complicated, possibly a self-organized process. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.366575
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  • 8
    Electronic Resource
    Electronic Resource
    Mn–Zn ferrite thin films fabricated on crystalline substrates using laser ablation technique (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 6217-6219 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a fabrication of Mn–Zn ferrite thin films by a low temperature process. It was found that usage of crystalline substrates is an effective way to obtain crystallized Mn–Zn ferrite thin films at the substrate temperature of room temperature in laser ablation technique. The usage of crystalline substrates reduced the coercive force of the thin films by approximately 25% compared to that of the thin films fabricated on glass substrates. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372659
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  • 9
    Electronic Resource
    Electronic Resource
    Characteristics of a multilayer eddy-current-type ac magnetic coil with a cooling system (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 6020-6022 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This paper deals with the performance characteristics of a new ac high magnetic field generator based on the effect of eddy currents. We have proposed a new ac high magnetic field generator and have obtained magnetic fields up to 15 T at 60 Hz. The proposed structure consists of layers of exciting coils and conductors built in concentric circles. The eddy currents in the conductor flow close to the hole in the conductor. The magnetic flux induced by the eddy currents is concentrated within the hole, and an ac high magnetic field is produced. A procedure for estimating the optimum shape and number of layers required to increase the concentration effect, together with a design of the colling system necessary for continuous operation, is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342137
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  • 10
    Electronic Resource
    Electronic Resource
    Study on the building factor of a stacked core made of amorphous sheets (abstract) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5707-5707 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: There are some factors increasing the building factor of a transformer assembled from amorphous sheets. One of the factors may be the localized irregularity of magnetization property. Such an inhomogeneity is caused by the localized mechanical stress or the inhomogeneous temperature distribution during annealing. Various stacked cores which are composed of amorphous sheets with inhomogeneous magnetic characteristics as shown in Fig. 1 have been investigated. Each half of the sheet is annealed uniformly at different temperature from the other half. The frequency characteristics of power losses are measured to clarify whether the main cause of the total loss increase is due to the hysteresis loss or the eddy current loss. The obtained results show that the incremental loss is mainly due to the increase of eddy current loss. The increase of eddy current loss may be due to the transverse flux across the interlaminar gap. Therefore, the relationship between power losses and gap length has been examined. The obtained results denote that the eddy current loss is increased by the transverse flux. The experimental results are also checked by numerical analysis of the flux distribution in stacked cores using the finite element method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342233
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