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  • 1985-1989  (7)
  • 1989  (7)
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Materialart
Erscheinungszeitraum
  • 1985-1989  (7)
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Band lineup for a GaInP/GaAs heterojunction measured by a high-gain Npn heterojunction bipolar transistor grown by metalorganic chemical vapor deposition (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 4898-4902 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: A GaInP(N)/GaAs( p) heterojunction bipolar transistor was fabricated by metalorganic chemical vapor deposition (MOCVD) for the first time. The common-emitter current gain exceeded 200 at a current density around 10 A/cm2 and the offset voltage was as small as 50 mV. Thermionic emission theory indicates that the conduction-band discontinuity (ΔEc) at GaInP/GaAs heterointerface is as small as 30 meV at room temperature and this value was more than 160 meV smaller than 0.19–0.22 eV obtained by the C-V profile method. The band-gap energy for MOCVD-grown GaInP was 60 meV smaller than the intrinsic band-gap energy (1.91 eV), but this value is too small to explain the difference between the present ΔEc value and the previously reported ΔEc value.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.343205
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  • 2
    Digitale Medien
    Digitale Medien
    Changes in soft magnetic properties of Fe multilayered films due to lattice mismatches between Fe and intermediate layers (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 4338-4344 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Fe multilayered films with various intermediate layers are formed. Their magnetic properties and film structures are examined to understand the mechanism originating soft magnetic properties. The soft magnetic properties change with the lattice mismatches between Fe and intermediate layers, showing low coercive force and high relative permeability at lattice mismatches from 0.4 to 1.2%. It is thought that the lattice mismatches above 0.4% decrease Fe crystallite size and improve soft magnetic properties. Although Fe crystallite size is small at the lattice mismatches above 1.2%, the soft magnetic properties are poor. This is because the large lattice mismatch increases internal stress and magnetic anisotropy energy. This report indicates that the good soft magnetic properties are obtained when both Fe crystallite size and internal stress are small.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.343981
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  • 3
    Digitale Medien
    Digitale Medien
    Skin pigmentation associated with minocycline therapy (1989)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 121 (1989), S. 0 
    Details
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A patient on long-term minocycline therapy developed blue-black discoloration on the legs. Skin biopsy specimens from the pigmented areas were examined by light and electron microscopy and energy-dispersive X-ray microanalysis. Pigmented granules were present at all levels of the dermis and subcutaneous fat tissues. Ultrastructural examination showed electron-dense graular material within the cytoplasm of dermal macrophages and energy-dispersive X-ray microanalysis indicated that the granules contained iron. Thyroid tissue obtained by aspiration biopsy showed the presence of fine brown granules within the cytoplasm of the follicular epithelial cells. An extract of skin from the pigmented areas was subjected to high performance liquid chromatography and minocycline was detected.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2133.1989.tb01807.x
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  • 4
    Digitale Medien
    Digitale Medien
    X-ray crystallographic analysis of the structural distortions induced by substitution and annulation of the dodecahedrane nucleus (1989)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 893-898 
    Details
    ISSN: 1600-5759
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1107/S0108270188013721
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  • 5
    Digitale Medien
    Digitale Medien
    Immunogenetic heterogeneity in Type 1 (insulin-dependent) diabetes among Japanese — HLA antigens and organ-specific autoantibodies (1989)
    Springer
    Diabetologia 32 (1989), S. 34-39 
    Details
    ISSN: 1432-0428
    Schlagwort(e): Type 1 (insulin-dependent) diabetes ; HLA ; auto-antibodies ; islet cell antibody
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary HLA phenotypes and haplotypes in relation to organ-specific autoantibody responses were studied in 82 Japanese patients with Type 1 (insulin-dependent) diabetes. HLA-DRw9 antigen and HLA phenotype of DRw9/X (X: not DR4) were increased in patients with organ-specific autoantibodies other than islet cell antibody (CP〈0.02, RR=4.02 and p〈0.05, RR=2.30, respectively); whereas HLA-DR4 antigen and HLA phenotype of DR4/X (X: not DRw9) were increased in those without the autoantibodies (CP〈0.001, RR=3.95 and p〈0.01, RR=2.46, respectively). HLA haplotype of Bw61-DRw9 was increased in patients with the autoantibodies (p〈0.005, RR=4.94), and HLA haplotype of Bw54-DR4 was increased in those without the autoantibodies (p〈0.001, RR=5.52). The relative risk of HLA-DR4/DRw9 was the highest among all HLA-DR phenotypes or genotypes in patients either with or without the autoantibodies. No association was, however, found between the incidence of islet cell antibody and HLA-DR phenotypes. These findings suggest that Type 1 diabetes among Japanese is immunogenetically heterogeneous as is Type 1 diabetes among Caucasians; and the differences in HLA-association of Type 1 diabetes among ethnic groups might give a clue to understanding of a role of HLA-antigens in the development of Type 1 diabetes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00265401
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  • 6
    Digitale Medien
    Digitale Medien
    Congenital myopathy with myasthenic features and congenital cataract in two siblings (1989)
    Springer
    Journal of neurology 236 (1989), S. 161-163 
    Details
    ISSN: 1432-1459
    Schlagwort(e): Myasthenic syndrome ; Myasthenic myopathy ; Neuromuscular junction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Two siblings with congenital myopathy showing myasthenic manifestations together with congenital cataract are reported. Their muscle weakness fluctuated and was alleviated by edrophonium chloride. Their serum creatine kinase activity was elevated, and the waning phenomenon was observed on repetitive nerve stimulation. Biopsied muscle showed degenerative changes with type 1 fibre predominance and abnormal morphology of neuromuscular junctions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00314333
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  • 7
    Digitale Medien
    Digitale Medien
    Catching conditions of a disease with nondestructive activation analysis of hair (1989)
    Springer
    Journal of radioanalytical and nuclear chemistry 133 (1989), S. 271-278 
    Details
    ISSN: 1588-2780
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Energietechnik
    Notizen: Abstract In this study, we aimed to recognize the body abnormalities through determining the metallic balance of hair. We determinated multiple elements of patients hair with acute chromium poisoning by burn from the worst clinical condition to complete recovery. Elements determined were Al, Au, Br, Ca, Cl, Co, Cr, Cu, Fe, Hg, I, K, Mg, Mn, Na, S, Se, V and Zn by mondestractive neutron activation analysis. Comparing the clinical findings of a patient with acute chromium poisoning and metallic balance of his hair, we demonstrated that the metallic balance returned to the normal range with recovery from sickness, which suggested a promising possiblity to utilize this as one parameter indicative of clinical state.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02060500
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