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  • 1
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    A preliminary study of seismic stratigraphy of the late Cenozoic sequences in the Tainan Basin off Southwestern Taiwan (1991)
    In:  TAO, Terrestrial, Atmospheric and Oceanic Science, Corvallis, x + 406 pp., Oregon State University Press, vol. 2, no. 8, pp. 75-94, pp. L13610, (ISSN: 1340-4202)
    Details
    Publication Date: 1991
    Keywords: Seismic stratigraphy ; Seismics (controlled source seismology) ; TAO
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
    Electronic Resource
    Electronic Resource
    Finite elastoplastic deformation of an internally pressurized hollow sphere (1993)
    Springer
    Acta mechanica solida Sinica 6 (1993), S. 81-97 
    Details
    ISSN: 0894-9166
    Keywords: finite deformation ; dilatant soil ; cavity expansion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract This paper considers large elastoplastic deformations of an internally pressurized hollow sphere of dilatant soil. A complete analytical solution for the expansion of a hollow sphere is developed. The soil is modelled as an elastic-perfectly plastic material obeying the Mohr-Coulomb yield criterion. A non-associated plastic flow rule is used and therefore the dilation of the material is fully taken into account. Closed form solutions are obtained for the stresses and the elastic-plastic deformations of arbitrary magnitude when a hollow sphere of soil is subjected to constant external pressure and monotonically increasing internal pressure. A selection of numerical results is presented to indicate the effects of various key parameters
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02207816
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  • 3
    Electronic Resource
    Electronic Resource
    Male cytoplasmic diminution and male germ unit in young and mature pollen of Cymbidium goeringii: a 3-dimensional and quantitative study (1992)
    Springer
    Sexual plant reproduction 5 (1992), S. 169-181 
    Details
    ISSN: 1432-2145
    Keywords: Cymbidium goeringii ; Cytoplasmic diminution ; Generative cell ; Male germ unit ; Vegetative nucleus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Pollinia of Cymbidium goeringii (Orchidaceae) were examined at a young stage (approx. 2 weeks before anthesis) and at anthesis using transmission electron microscopy, computer-assisted serial reconstruction and quantitative cytology. At the young stage, the generative cell (GC) has a spherically shaped main body with a large nucleus and 1 to 4 cytoplasmic extensions (up to 10 μm long) physically associated with a groove on one side of the vegetative nucleus (VN). By anthesis, some GCs lose their cytoplasmic extensions, becoming spherical. The GC surface becomes highly wrinkled, the distance between the GC and the VN increases and the two may separate completely. Enucleated cytoplasmic bodies (ECBs) are apparently generated by the GC, as evidenced by their similar ultrastructural appearance and distribution near the GC. ECBs are likely produced from two sites: the GC surface and the tips of cytoplasmic extensions of the GC. Vesicle-containing bodies (VCBs) may be generated from the lateral surface of the GC and may also represent a degeneration stage of ECBs, finally fusing with lipid bodies. Heritable organelles are rare and usually absent in the GC of Cymbidium: 0.176 mitochondria and 0.0042 plastids per GC were observed at the young stage and no mitochondria and 0.019 plastids at anthesis. Of 16 cellular parameters examined during GC development, all decreased with the exception of the surface area and volume of ECBs/ VCBs (which remained stable) and GC vacuoles (which increased). Significant decreases in 11 parameters presumably relate to dehydration of the pollen and male cytoplasmic diminution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00189808
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  • 4
    Electronic Resource
    Electronic Resource
    Quantitative differences in sperm cells and organelles of tobacco (Nicotiana tabacum L.) grown under differing environmental conditions (1994)
    Springer
    Theoretical and applied genetics 89 (1994), S. 814-817 
    Details
    ISSN: 1432-2242
    Keywords: Cytoplasmic inheritance ; Environmental conditions ; Nicotiana tabacum ; Sperm cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In flowers grown at warm temperatures in environmental chambers and at cooler temperatures in the greenhouse, eight parameters of the sperm-cell organization of Nicotiana tabacum were examined during sperm cell maturation using serial ultrathin sectioning, transmission electron microscopy and quantitative cytology. Despite employing the same seed source, and similar soil and nutrient conditions, the surface area and volume of the cell, the nucleus and the chondriome were larger in flowers grown in growth chambers under warmer controlled conditions, whereas the number of plastids appeared to be the same, or slightly higher, in flowers grown under cooler greenhouse conditions. These results suggest that environmental conditions may influence the quantity of cytoplasmic organelles, including mitochondria and plastids, thus potentially influencing the likelihood of male cytoplasmic inheritance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224502
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  • 5
    Electronic Resource
    Electronic Resource
    Sperm cells in pollen tubes ofNicotians tabacum L.: three-dimensional reconstruction, cytoplasmic diminution, and quantitative cytology (1992)
    Springer
    Protoplasma 168 (1992), S. 172-183 
    Details
    ISSN: 1615-6102
    Keywords: Cytoplasmic inheritance ; Male cytoplasmic diminution ; Male gamete (angiosperm) ; Male germ unit ; Nicotiana ; Tobacco
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The organization of the sperm cells and vegetative nucleus (male germ unit) ofNicotiana tabacum was examined 18 h after semivivo pollination using transmission electron microscopy, computerassisted serial section reconstruction and quantitative cytology. Based on a measurement of 11 cellular parameters in nine reconstructed sperm cell pairs, there are no statistically significant differences between the two cells. The Svn is characterized by a strapshaped cytoplasmic extension that is physically associated with the surface of the vegetative nucleus. The nucleus is located adjacent to the sperm crosswall, with sperm organelles being distributed between the nucleus and the extension. The Sua is a tapered cell with cytoplasmic areas at both poles and deep axial invaginations near the crosswall. This cell has a centrally-located nucleus and a largely polar distribution of organelles. Three mechanisms for cytoplasmic diminution were observed that appear to contribute actively to the loss of cytoplasmic volume and organelles: (1) enucleated cytoplasmic body production in the Sua; (2) vesiculation at the tip of the cytoplasmic projection of the Svn; and (3) vesicle-containing body accumulation in the periplasm of both the Svn and Sua.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01666263
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  • 6
    Electronic Resource
    Electronic Resource
    Analysis and field evaluation of volatile blend emitted by calling virgin females of beet armyworm moth,Spodoptera exigua (Hübner) (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 3411-3423 
    Details
    ISSN: 1573-1561
    Keywords: Trapping ; volatile blend ; sex pheromone ; pheromone blends ; trap bait ; capture ; beet armyworm moth ; Spodoptera exigua ; Lepidoptera ; Noctuidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The volatile blend emitted by calling virgin beet armyworm females was collected and analyzed by capillary gas chromatography and mass spectrometry. Five compounds were detected and identified in this blend: (Z)-9-tetradecenyl acetate, (Z)-9-tetradecen-l-ol, (Z,E)-9,12-tetradecadienyl acetate (Z,Z)-9,12-tetradecadienyl acetate, and (Z)-l 1-hexadecenyl acetate. They were emitted in a ratio of 47.9 ∶4.0∶40.2 ∶6.5 ∶ 1.7, respectively. This five-component blend and several other blends with one or more components deleted were formulated on rubber septa to release the components in about the same ratios as the females. Field tests of these formulations in bucket traps indicated that a blend of (Z)-9 tetradecen-1-ol, (Z,E)-9,12-tetradecadienyl acetate, and (Z)-l 1-hexadecenyl acetate was most effective for trapping beet armyworm males and that (Z)-9-tetradecenyl acetate actually decreased trap captures. Blends that did not contain both (Z)-9-tetradecen-l-ol and (Z,E)-9,12-tetradecadienyl acetate were ineffective as trap baits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00982107
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  • 7
    Electronic Resource
    Electronic Resource
    A novel isoparametric finite element displacement formulation for axisymmetric analysis of nearly incompressible materials (1993)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 36 (1993), S. 2453-2472 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: It is well accepted that severe numerical difficulties arise when using the conventional displacement method to analyse incompressible or nearly incompressible solids. These effects are caused by the kinematic constraints imposed on the nodal velocities by the constant volume condition. In elastic-plastic analysis, these effects are due to a conflict between the plastic flow rule and the finite element discretization. Although several methods have been proposed to cope with this problem, none has been based on the appropriate choice of displacement interpolation functions to minimize the constraints. The theoretical formulation of a new six-noded isoparametric displacement finite element, which is well suited for elastic-plastic analysis of axisymmetric constrained solids by using a rational displacement interpolation function, is presented in this paper. The proposed displacement interpolation function implies that the displacement in the axial direction and the product of the displacement in the radial direction and the radius should be treated as two independent basic variables. Alternatively, the proposed displacement interpolation function can also be implemented in a conventional displacement formulation simply by using a modified shape function matrix. The suitability of the proposed formulations is first studied theoretically by assessing the number of degrees of freedom per constraint and then verified by performing numerical experiments on typical boundary value problems which involve incompressible behaviour.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620361409
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  • 8
    Electronic Resource
    Electronic Resource
    Letter to the Editor (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    International Journal for Numerical and Analytical Methods in Geomechanics 17 (1993), S. 205-207 
    Details
    ISSN: 0363-9061
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nag.1610170306
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  • 9
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    State Parameter from Self‐Boring Pressuremeter Tests in Sand (1994)
    American Society of Civil Engineers
    Details
    Publication Date: 1994-12-01
    Print ISSN: 0733-9410
    Electronic ISSN: 1944-8368
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Published by American Society of Civil Engineers
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    PAPER CURRENT
  • 10
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    A Note on Bearing Capacity of Soft Clays under Embankments (1994)
    American Society of Civil Engineers
    Details
    Publication Date: 1994-01-01
    Print ISSN: 0733-9410
    Electronic ISSN: 1944-8368
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Published by American Society of Civil Engineers
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    PAPER CURRENT
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