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  • 1
    Electronic Resource
    Electronic Resource
    Decrease of the inhibition of lipid peroxidation by glutathione-dependent system in erythrocytes of non-insulin dependent diabetics (1989)
    Springer
    Journal of molecular medicine 67 (1989), S. 336-341 
    Details
    ISSN: 1432-1440
    Keywords: Lipid peroxidation ; Erythrocyte ; Glutathione ; Diabetes mellitus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The inhibition of lipid peroxidation of erythrocyte membranes by glutathione-dependent protection was studied in patients with non-insulin dependent diabetes mellitus. Incubation of red cells from diabetics with 1.5 mM t-butyl hydroperoxide resulted in a lipid peroxidation increase greater than that of normal controls. Glutathione-dependent and glutathione-independent protection against oxidative damage was examined using an artificial system, in which erythrocyte ghosts were incubated with t-butyl peroxide and dialysed hemolysate in the presence or the absence of 2 mM glutathione. The glutathione-dependent protection of hemolysate from diabetics was approximately 70% of that from normal controls. The results suggest that decrease in glutathione-dependent protection against lipid peroxidation, along with decrease in glutathione levels, increases oxidative damage in erythrocyte membranes taken from diabetic patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01741388
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  • 2
    Electronic Resource
    Electronic Resource
    Two c-core type orthogonal-core using a Fe-6.5 wt. % Si sheet and its application to power converters (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5693-5695 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This paper describes a two c-core type orthogonal-core made of Fe-6.5 wt. % Si sheet and its application to power converters. The orthogonal-core can be used in the high-frequency region because a Fe-6.5 wt. % Si sheet has superior soft magnetic properties including high permeability and low core loss. Using the orthogonal-core, we constructed a parametric oscillation type dc-ac converter. The dc-ac converter had voltage regulation, overload protection, noise rejection, and almost sinusoidal output. Good efficiency was obtained in the frequency range from 400 Hz to 1 kHz. Furthermore, we propose a dc-dc converter for coupling two independent dc power sources. The dc-dc coupling converter has bilateral power transfer and ease of controlling the transferred power. The basic operation of the dc-dc coupling converter is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342277
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  • 3
    Electronic Resource
    Electronic Resource
    A new dc current detector using bridge-connected magnetic circuit (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5702-5704 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This paper describes performance characteristics of a bridge-connected magnetic circuit with single output winding in dc control. The difference between positive and negative amplitudes of output current changes with the dc control current. An application of the bridge-connected magnetic circuit to a dc current detector is presented in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342254
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  • 4
    Electronic Resource
    Electronic Resource
    Distance sensor using a cloth inductor (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5690-5692 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new distance sensor is presented using a cloth inductor combined with a magnet. The sensor, reported in this paper, makes use of the characteristics of the cloth inductor. A distance sensor using a cloth inductor has superior characteristics due to the cloth inductor. The cloth inductor has two great characteristics: a plain shape and a closed magnetic path. The sensor also has a very plain shape (thickness〈0.6 mm), a high signal-to-noise ratio, and is independent of the nearby magnetic substance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342276
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  • 5
    Electronic Resource
    Electronic Resource
    Miniaturization limit of a cloth inductor (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3394-3396 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A cloth-structured magnetic device was designed, and the optimized relation between amorphous fiber and conductive fiber size was shown. The inductance, equivalent resistance, and quality factor of cloth-structured magnetic devices were calculated. Furthermore, the stray capacitance of the device was estimated from the analysis of an equivalent circuit. A cloth inductor of only 0.7 mm thickness could be made, which could have an inductance of 100 μH, a rating current of 100 mA, and a quality factor over 60. Regarding the further miniaturization of the device, the magnetic flux distribution established inside the cloth inductor was measured. The miniaturization limit was estimated, which was influenced by the magnetic permeability and the aspect ratio of the fibers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340794
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  • 6
    Electronic Resource
    Electronic Resource
    Hg content and thermal stability of the anodic sulfide films on Hg1−xCdxTe investigated by 30–40-MeV O5+ ion backscattering (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 132-135 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Hg content of anodic sulfide films on Hg1−xCdxTe (MCT) were investigated for as-grown and heat-treated films by using 30–40-MeV O5+ ion backscattering. Heat treatments were performed in a vacuum for 60 min at various temperatures up to 300 °C for the samples with x=0.20 and up to 350 °C for the samples with x=0.30 and 0.35. A significant Hg content of about 15 at. % of Cd was found in the as-grown anodic sulfide film on MCT samples with x=0.20, 0.30, and 0.35. After heat treatment above 260 °C for x=0.30 and 0.35 and above 210–240 °C for x=0.20, the Hg atoms were removed from the films, and Hg deficient layers were formed near the interface region of the MCT crystal. This suggests that the residual Hg in the anodic sulfide films introduced during the sulfidization process plays an important role toward the degradation of the passivation properties of the sulfide film on MCT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340480
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  • 7
    Electronic Resource
    Electronic Resource
    A time-resolved x-ray absorption study of amorphous Si during pulsed laser irradiation (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 1774-1783 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report the first time-resolved x-ray absorption measurements on pulsed laser irradiated Si in the photon energy range from 90 to 300 eV, at irradiation energy densities up to 4 J/cm2, and at several delay times between irradiation pulse and x-ray probe pulse. The absorption spectra recorded at a delay time of 12 ns can be classified in three categories. Below ≈0.17 J/cm2 only thermal damping of extended x-ray absorption fine-structure (EXAFS) oscillations is observed. Between ≈0.17 J/cm2 and ≈1 J/cm2 annealing takes place. Several changes are observed, among which a ≈7-eV LII,III edge shifts towards higher energy, while the LI edge remains approximately at the same position. This edge shift behavior is explained by a largely reduced 3s density of states of the conduction band. This supports the idea that pulsed laser molten Si has a metalliclike structure. Thermal damping in this region is so strong that EXAFS oscillations are no longer visible. This is consistent with a lattice temperature above or equal to the melting temperature of Si. Above 1 J/cm2, the damage region, further edge shifts and the development of several peaks are observed. Clear cooling effects are visible at long delay times (60 ns) between irradiation and x-ray probe pulse. Cooling on this time scale can only be explained by evaporation of Si.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337220
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  • 8
    Electronic Resource
    Electronic Resource
    Atomic migration and surface evaporation of Hg in Hg1−x CdxTe crystals observed by 40-MeV O5+ ion backscattering method (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 1500-1503 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Dissociation and evaporation of Hg from the near-surface region of Hg1−xCdxTe crystals was investigated, up to several microns, by means of 40-MeV O5+ backscattering. Samples with x=0.18 and 0.32 were heat treated in a vacuum for 60 min at various temperatures up to 320 and 340 °C, respectively. The change of the backscattering spectra with the temperature of heat treatment indicated that the Hg atoms outdiffused partly from the near-surface region of the crystals at higher temperatures than 280 and 320 °C for x=0.18 and 0.32, respectively. This behavior of outdiffusion is in contrast to the case of HgTe crystal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336454
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  • 9
    Electronic Resource
    Electronic Resource
    Implantable transformer for an artificial heart utilizing amorphous magnetic fibers (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5859-5861 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is a very serious problem for an implantable artificial heart to receive energy from outside the body. A new implantable transformer with a plain weave structure was proposed by using amorphous magnetic fibers. The transformer has the following features: (i) a thin, planar shape; (ii) high flexibility; and (iii) low waste heat in the range of several tens kHz. Appropriate conditions for the size of the transformer were shown experimentally. The transformer (70×30×1 mm3) of a trial design can supply a power of 6 W. The temperature rise of the transformer based on iron loss is considered to be negligibly small.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342180
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  • 10
    Electronic Resource
    Electronic Resource
    Soft heating for hyperthermia using temperature-sensitive magnetic powders and fine metal rings (abstract) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5866-5866 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In local hyperthermia it is important to leave the temperature of surrounding normal tissues essentially unchanged while increasing the temperature of tumors to a desired level. Soft heating1 with temperature-sensitive magnetic materials is advantageous in heating deep-seated tumors because of the self-limiting ability. In order for the method to become available for large-scale tumors we have proposed to use temperature-sensitive magnetic powders, in which fine metal rings are dispersed. As the magnetic flux distribution varies with the temperature of the powders, the fine rings immersed in the powders with low temperatures generate heat more than rings located in the powders with high temperatures. Furthermore, the transition from the ferromagnetic to the nonferromagnetic state becomes sharp effectively. As a result it is expected to make the temperatures of powders in a broad region uniform. Figure 1 shows the temperature dependence of the magnetic powders used in experiments. Figure 2 shows the relation between the attained temperature of the powders and the ring resistances, comparing them in the case of iron powder. The figure reveals that it exists appropriate combination between the ring resistance, and the magnetic permeability of the powders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342183
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