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  • 1990-1994  (41)
  • 1980-1984
  • 1965-1969
  • 1994  (41)
  • 1
    Electronic Resource
    Electronic Resource
    Scanning tunneling microscopy observation of hydrogen-terminated Si(111) surfaces at room temperature (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 3240-3242 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Scanning tunneling microscopy has been applied to observe hydrogen-terminated Si(111) surfaces at room temperature. A clear image was easily observed for a Si surface prepared by rinsing in pure water with very low dissolved oxygen after removal of native oxide by 1% HF solution dipping. A smooth surface in an atomic scale was exhibited in a 50×50 nm area. Completely triangular-shaped holes were observed on the surface. The holes were surrounded by steps which were very likely directed toward 〈112¯〉. The treatment of the surface was remarkably stable even after a 3 h air exposure. Furthermore, nm size pits were found at the bottom part of the triangular-shaped holes. The results imply that the nm size pits appeared to be due to microdefects and that the pits might be the origin of surface etching at the Si surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111297
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  • 2
    Electronic Resource
    Electronic Resource
    SURFACE AND IN-DEPTH CRACK PROPAGATION IN HIGH TEMPERATURE LOW-CYCLE FATIGUE OF SUS 316 STAINLESS STEEL (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 17 (1994), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— The low-cycle fatigue crack propagation behaviour of surface cracks in SUS316 stainless steel at 700°C, in both the surface direction and the in-depth direction, has been studied with special emphasis on the role of oxidation. The coalescence behaviour of surface cracks is essential for the process of crack propagation in high temperature low cycle fatigue, irrespective of the existence of oxidation effects. For sub-surface cracks the process of crack propagation is divided into two stages characterized by differences in fracture mode. In both stages, the in-depth crack propagation rate in air is higher than that in vacuum. This difference in crack propagation rate is the main reason for the decrease of fatigue life in air compared with that in vacuum. The crack propagation behaviour in the in-depth direction can be estimated from the conversion of the surface crack length into the subsurface depth by the use of an aspect ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.1994.tb00220.x
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  • 3
    Electronic Resource
    Electronic Resource
    Cryopreservation of in vitro-grown apical meristems of wasabi (Wasabia japonica) by vitrification and subsequent high plant regeneration (1994)
    Springer
    Plant cell reports 13 (1994), S. 442-446 
    Details
    ISSN: 1432-203X
    Keywords: cryopreservation ; apical meristems ; vitrification ; wasabi (Wasabia japonica)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In vitro-grown apical meristems of wasabi (Wasabia japonica Matsumura) were successfully cryopreserved by vitrification. Excised apical meristems precultured on solidified M S medium containing 0.3M sucrose at 20°C for 1 day were loaded with a mixture of 2M glycerol and 0.4M sucrose for 20 min at 25°C. Cryoprotected meristems were then sufficiently dehydrated with a highly concentrated vitrification solution (designated PVS2) for 10 min at 25°C prior to a plunge into liquid nitrogen. After rapid warming, the meristems were expelled into 2 ml of 1.2M sucrose for 20 min and then plated on solidified culture medium. Successfully vitrified and warmed meristems remained green after plating, resumed growth within 3 days, and directly developed shoots within two weeks. The average rate of normal shoot formation amounted to about 80 to 90% in the cryopreserved meristems. This method was successfully applied to three other cultivars of wasabi. This vitrification procedure promises to become a routine method for cryopreserving meristems of wasabi.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00231963
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  • 4
    Electronic Resource
    Electronic Resource
    Local structural instability of high-T c oxide superconductors studied by inelastic neutron scattering (1994)
    Springer
    Journal of superconductivity 7 (1994), S. 415-418 
    Details
    ISSN: 1572-9605
    Keywords: Oxide superconductors ; structural instability ; neutron scattering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The scattering function,S(Q, E), of superconducting La1.85Sr0.15CuO4 and YBa2Cu3O7 was measured over a wide range ofQ-E space by inelastic neutron scattering. Fine structures in their phonon density of states as well as theQ-dependences ofS(Q, E) were observed. TheQ-dependence ofS(Q, E) is very susceptive atT c , with an anomalous behavior similar to a critical phenomenon. We have found that the anomalous behavior is related to the local structural instability, i.e., the 〈110〉 buckling motion of the Cu-O plane and the shortening of the distance between the apical oxygen and the copper atom in the plane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00724579
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  • 5
    Electronic Resource
    Electronic Resource
    Human high-affinity FcγRI (CD64) gene mapped to chromosome 1q21.2-q21.3 by fluorescence in situ hybridization (1994)
    Springer
    Human genetics 〈Berlin〉 93 (1994), S. 13-15 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The human FcγRI gene encodes for a highaffinity Fcγ receptor that plays pivotal roles in the immune response. We have used fluorescence in situ hybridization analysis to localize the FcγRI gene to human chromosome 1. The human FcγRI (CD64) gene has been assigned to human chromosome 1q21.2-q21.3 using R-banded human (pro)metaphase chromosomes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00218905
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  • 6
    Electronic Resource
    Electronic Resource
    Mapping of the human gene encoding the mutual signal-transducing subunit (β-chain) of granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin-3 (IL-3), and interleukin-5 (IL-5) receptor complexes to chromosome 22q13.1 (1994)
    Springer
    Human genetics 〈Berlin〉 93 (1994), S. 198-200 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The human gene encoding the mutual signal-transducing subunit (β-chain) of granulocyte-macrophage colony-stimulating factor, interleukin-3, and interleukin-5 receptor complexes has been mapped to chromosome 22q13.1 by the fluorescence in situ hybridization method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00210610
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  • 7
    Electronic Resource
    Electronic Resource
    Growth of dendritic zinc oxide crystals by rapid condensation of high temperature ultrasuper-saturated gas (1994)
    Springer
    Naturwissenschaften 81 (1994), S. 85-86 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01138467
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  • 8
    Electronic Resource
    Electronic Resource
    Growth of Dendritic Zinc Oxide Crystals by Rapid Condensation of High-Temperature Ultrasuper-Saturated Gas (1994)
    Springer
    Naturwissenschaften 81 (1994), S. 85-86 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01138467
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  • 9
    Electronic Resource
    Electronic Resource
    Organic geochemistry of the Japan Sea sediments-1: Bulk organic matter and hydrocarbon analyses of Core KH-79-3, C-3 from the Oki Ridge for paleoenvironment assessments (1994)
    Springer
    Journal of oceanography 50 (1994), S. 179-195 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Organic geochemical study of bulk organic matter (OM), hopanoid hydrocarbon and normal hydrocarbon (C23∼C35) was conducted for a 936-cm-long sediment core sample from the Oki Ridge of the Japan Sea (Core KH-79-3, C-3; 37°03.5′ N, 134°42.6′E, water depth 935 m). Stable carbon isotopic ratios were also measured for both bulk OM and individual hydrocarbons. The following results were obtained: (1) The weight ratios of total organic carbon to total nitrogen range from 6.2 to 9.4 in the core. The δ13C values of bulk OM range from −25.1∼−20.7%.. The δ13C values of OM in the sections of 140∼190 cm are lower (−25∼−24‰) than those in the other sections (−23∼−21‰). This result indicates that OM in the core except for the 140∼190 cm sections is essentially of marine origin. (2) The δ13C value of diploptene (a hopanoid hydrocarbon) in the last glacial maximum (LGM), is −66.3‰ (vs. PDB), which indicates it originating in methanotrophic bacteria. This result provides evidence to support for the previous ideas (Oba et al., 1980, 1984; Masuzawa and Kitano, 1984) that the bottom waters in the Japan Sea were anoxic in LGM. (3) Long chain (C23∼C35) n-alkanes of higher-plant wax origin were found throughout the core. Their concentration is high in 140∼190 cm in depth, suggesting that eolian dust load was high in LGM. (4) The n-alkane/TOC ratio increases with decreasing δ13C values of bulk OM. This result indicates that the load of terrestrial (probably eolian dust-derived) OM to the Japan Sea became higher in colder climates. (5) The CPI values of long-chain n-alkanes are different in different δ13O stages of paleoclimate, probably reflecting variations in species of terrestrial higher plants as a result of climatological adaptations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02253478
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  • 10
    Electronic Resource
    Electronic Resource
    Histochemical analysis of glycoproteins in the unicellular glands in the epidermis of an Indian freshwater fish Mastacembelus pancalus (Hamilton) (1994)
    Springer
    Journal of molecular histology 26 (1994), S. 666-677 
    Details
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The unicellular glands in the epidermis of the Indian freshwater fish Mastacembelus pancalus consist of three types of mucous cells and sacciform cells. The histochemical properties of their secretory glycoproteins have been analysed by means of a battery of histochemical methods. These included methods for the identification and simultaneous visualization of oxidizable vicinal diols, O-acyl sugars, O-sulphate esters and sialic acid residues with or without side-chain O-acyl variants. Four general classes of glycoproteins (GPs) were identified. These included (i) GPs with O-sulphate esters and oxidizable vicinal diols, (ii) GPs with oxidizable vicinal diols and sialic acid residues with or without O-acyl substitution at C7, (iii) GPs mainly with O-sulphate esters, low moieties of GPs with oxidizable vicinal diols, O-acyl sugars and sialic acid residues with side-chain O-acyl variant predominantly at C8 (or which are di- or tri-substituted) or C9 and in traces of sialic acid residues without O-acyl substitution or with O-acyl substitution at C7, and (iv) GPs with traces of oxidizable vicinal diols, O-acyl sugars and sialic acid residues with O-acyl substitution at C8 (or which are di- or tri-substituted) or C9. The physiological significances of these GP classes and their release on the surface of the epidermis are discussed with special reference to their role in lubrication, protection and inhibition of the invasion and proliferation of pathogenic microorganisms in the epidermis, as adapted to the peculiar mode of life of the fish.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00158292
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