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  • 1990-1994  (33)
  • 1975-1979  (8)
  • 1
    Electronic Resource
    Electronic Resource
    Biochemical genetic evidence for a hybrid origin of spined loach, Cobitis taenia taenia, in Japan (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 44 (1994), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Starch gel electrophoresis and isoelectric focusing were performed on sarcoplasmic proteins from three taxa of cobitid fish in Japan, Cobitis biwae, C. taenia striata and C. l. taenia. These taxa are hardly distinguishable from each other by external appearance or morphological characters. Electrophoretic patterns of sarcoplasmic proteins from white muscle suggested fixed allelic differences between C. biwae and C. t. striata at two protein-coding loci (parvalbumin and creatine kinase). The third taxon, C. t. taenia, showed composite banding patterns with respect to the above two proteins, suggesting C. t, taenia originated from hybridization between C. biwae and C, t. striata. Previously, C. t, taenia and C. t. striata were believed to have shared a common ancestor subsequent to their divergence from C. biwae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1994.tb01244.x
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  • 2
    Electronic Resource
    Electronic Resource
    Recording experiments in magneto-optical disks using ultrathin Co/Pt and Co/Pd media (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 1069-1071 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magneto-optical media using ultrathin Co/Pt and Co/Pd films were prepared on 2P (photopolymer) glass substrates with a double-layer disk structure. Thermomagnetic writing was successfully made in the magneto-optical disks by the relatively low laser power above 3 mW. The values of the C/N ratio were 50 dB for the Co/Pt disk and 45 dB for the Co/Pd disk at a bit length of 5 μm. Clear and regular bit domains were observed even in the shorter recorded bit length.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102568
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  • 3
    Electronic Resource
    Electronic Resource
    Maskless InP wire formation on planar GaAs substrates (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 499-501 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Maskless growth of InP wires on planar (100)GaAs substrates by hydride vapor phase epitaxy is demonstrated. The selectivity of the growth was achieved by using focused ion beam to modify locally the substrate surface. The nucleation of deposited InP is enhanced on the exposed areas leading to the selectivity. Continuous 200 μm long wires with submicron cross-sectional dimensions were obtained in a single growth process. Cross-sectional transmission electron microscope micrographs show that the number of dislocations in the wires is relatively low, indicating the suitability of the present method for fabrication of nanoscale structures, e.g., quantum wires.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111109
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  • 4
    Electronic Resource
    Electronic Resource
    XeCl laser ablative deposition and characterization of yttria-stabilized zirconia thin films on glass and CeO2-Sm2O3 (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 699-704 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin films have been deposited by XeCl excimer laser ablation of a bulk yttria-stabilized zirconia (YSZ) target. The deposited thin films were characterized in terms of spatial distribution, composition, microstructure, and solid particulates on the film surface through deposition process control. The deposition of dense YSZ films, 0.5–2 μm thick, with an excellent adhesive property at 800 °C was performed on the CeO2-Sm2O3 substrate maintained at 500 °C under an O2 ambient of 5×10−2 Torr. The crystallinity of YSZ thin films was found to be promoted by post-deposition annealing. The YSZ film consisted of a cubic phase with predominant growth along the (200) plane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.352352
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  • 5
    Electronic Resource
    Electronic Resource
    Ultrathin Co/Pt and Co/Pd multilayered films as magneto-optical recording materials (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 2136-2142 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Co/Pt and Co/Pd multilayered films were prepared by two-source dc magnetron sputtering. The multilayers with thin Co layers, one to three atoms thick, exhibited a perfect squareness of Kerr loop and an enhancement of Kerr rotation when the total film thickness became below several hundred angstroms. These ultrathin films have a high Kerr rotation of 0.2°–0.45° and strong perpendicular magnetic anisotropy even in the very thin-film thickness. The figure of merit of the ultrathin Co/Pt films is superior to that of TbFeCo system at 780 nm and becomes larger at shorter wavelength. The ultrathin multilayers possess very high corrosion resistance, and the layered structure is thermally stable up to 400 °C. Consequently, the ultrathin Co/Pt and Co/Pd multilayered films can be new magneto-optical recording materials, especially for higher density recording using a shorter wavelength laser.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.345548
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  • 6
    Electronic Resource
    Electronic Resource
    Film thickness dependence of magneto-optical and magnetic properties in Co/Pt and Co/Pd multilayers (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 4429-4431 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Co/Pt and Co/Pd multilayers were prepared by two source dc-magnetron sputtering. It was found that magneto-optical and magnetic properties of the multilayers were affected by total film thickness. Kerr rotation angle of the films was remarkably enhanced at the film thickness below several hundred angstroms. The theoretical calculation clarified that the increase of Kerr rotation was due to optical interference and multiple reflection. The shape of Kerr loop also depends upon the film thickness and a perfect squareness is attained only at the ultrathin region. The improvement in the squareness of Kerr loop can be explained by the change in the domain structure from a stripe domain to a single domain. These behaviors at the ultrathin region in the multilayers are suitable for new magneto-optical recording media.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344921
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  • 7
    Electronic Resource
    Electronic Resource
    Recording on Co/Pt magneto-optical disks using a 488-nm wavelength laser (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5133-5135 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Co/Pt multilayer disks with a double-layer and a quadri-layer structure were prepared on a 2 P (photopolimerized) glass substrate with 1-μm-pitched grooves. The read/write characteristics of the disks were studied using Ar gas laser at a wavelength of 488 nm. It was confirmed that very small domains 0.3 μm in length were stably recorded. The carrier-to-noise ratio was 29 and 32 dB (30 kHz BW) at a mark length of 0.3 μm for double-layer and quadri-layer disks, respectively, being larger than that measured for a TbFeCo disk because of a higher figure of merit. In higher-density recording below 0.5-μm mark length, a quadri-layer disk shows a larger recording power margin than a double-layer disk due to the smaller expansion of domain with power, originating from the sharper thermal distribution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348988
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  • 8
    Electronic Resource
    Electronic Resource
    Mauritius type black rats with peculiar karyotypes derived from robertsonian fission of small metacentrics (1979)
    Springer
    Chromosoma 75 (1979), S. 51-62 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract All seventeen black rats collected from Mauritius Island were characterized by having many extra small acrocentric autosomes. Their basic karyotype was of Oceanian type, because of the presence of the large metacentric M1 and M2 pairs, but chromosome numbers in 13 specimens among them were 42, those of 3 specimens 43, and those of the remaining one specimen 44. Although the Oceanian type rat had 2 small acrocentric autosomes (pair no. 13), 16 Mauritius rats had 10 small acrocentrics, and the remaining one had 8 small acrocentrics. Comparative karyotype analysis between Oceanian and Mauritius type rats showed that the extra small acrocentrics found in Mauritius rats were due to Robertsonian fission of small metacentric pairs no. 14 and 18 of the original Oceanian type rat. Only one rat with 8 small acrocentrics showed the heteromorphic pair no. 18 consisting of one metacentric and two acrocentrics. The large metacentric M1 chromosome in 13 of 17 rats examined showed homologous pair, but two of them were heteromorphic by involving one metacentric M1 and two acrocentrics. In the remaining two rats M1 chromosome was not observed, but acrocentric pairs no. 4 and 7 were included. These acrocentrics were also suggested to be originated from Robertsonian fission of the large metacentric M1 chromosome. Robertsonian fission seemed to be one of the important mechanism found in karyotype evolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00330624
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  • 9
    Electronic Resource
    Electronic Resource
    On free-space Green's functions of a transversely isotropic elastic medium subjected to torsionless ring-like loading (1991)
    Springer
    Archive of applied mechanics 61 (1991), S. 222-230 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Übersicht Die Greenschen Funktionen für den unendlichen, elastisch transversal-isotropen Körper unter einer ringförmigen, axialsymmetrischen Belastung, die torsionsfrei sei, werden hergeleitet. Dazu werden zwei Potentialfunktionen eingeführt und die Hankel- und Fouriertransformation angewandt. Der isotrope Sonderfall wird ebenfalls angegeben.
    Notes: Summary In this paper we deal with the one of the ways to obtain a free-space Green's function of a transversely isotropic infinite elastic medium which is subjected to a ring-like axisymmetric loading. We assume that the loading is torsionless. To solve the problem, we introduce two potential functions and apply the Hankel and the Fourier transforms. As a special case we solve the same problem of the isotropic medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00794347
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  • 10
    Electronic Resource
    Electronic Resource
    On boundary integral equation formulation for axisymmetric problems of transversely isotropic media (1991)
    Springer
    Archive of applied mechanics 61 (1991), S. 414-421 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Übersicht Behandelt wird die Formulierung der Randintegralgleichung für den axialsymmetrischen, elastisch transversal-isotropen Körper. Es wird angenommen, daß die Achse der elastischen Symmetrie mit der Rotationsachse zusammenfällt und der Körper einer beliebigen axialsymmetrischen Belastung ohne Torsion unterworfen ist. Ausgeführte numerische Beispiele werden mit Ergebnissen der Finite-Element-Methode verglichen.
    Notes: Summary In this paper we deal with the formulation of the axisymmetric boundary integral equation for the transversely isotropic elastic body. We assume that the axis of elastic symmetry is coincident with the axis of rotation and that the elastic body is subjected to arbitrary axisymmetric loading without torsion. Numerical calculations are carried out and compared with results by the finite element method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00790132
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