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  • Springer  (53)
  • American Physical Society  (7)
  • American Institute of Physics (AIP)  (5)
  • Blackwell Science Ltd
  • International Union of Crystallography
  • 2000-2004
  • 1990-1994
  • 1985-1989  (68)
  • 1945-1949
  • 1935-1939
  • 1987  (68)
Collection
Keywords
Publisher
Years
  • 2000-2004
  • 1990-1994
  • 1985-1989  (68)
  • 1945-1949
  • 1935-1939
Year
  • 1
    Electronic Resource
    Electronic Resource
    Pollination-related characteristics in the mimosoid legumeAcacia terminalis (Leguminosae) (1987)
    Springer
    Plant systematics and evolution 157 (1987), S. 49-62 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Leguminosae ; Mimosoideae ; Acacia terminalis ; Bee- and bird-pollination ; extrafloral nectaries ; intraspecific variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Intraspecific variation has been found for several pollination-related characteristics in two isolated populations of the self-incompatible treeAcacia terminalis: floral characteristics including colour and flowering time; style length; size and colour of extrafloral nectaries on the leaf petioles; chemical components of the extrafloral nectar; different taxa of bee pollinators; and frequency differences in bird pollinators. These differences possibly reflect the evolution of two different pollination syndromes within this species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00939180
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  • 2
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    The structure of human lactoferrin at 3.2 Å resolution (1987)
    International Union of Crystallography
    Details
    Publication Date: 1987-08-12
    Print ISSN: 0108-7673
    Electronic ISSN: 2053-2733
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Published by International Union of Crystallography
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    PAPER CURRENT
  • 3
    Electronic Resource
    Electronic Resource
    Four-dimensional boson field theory. III. Nontriviality (1987)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 28 (1987), S. 1146-1158 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The results of numerical investigations based on series analysis indicate clearly that the method of phantom fields constructs nontrivial, self-interacting scalar Euclidean boson field theories. It is found that these continuum theories arise as the scaling limit to normal critical points of lattice statistical mechanical models. The character of these theories is numerically indistinguishable from that of a classical theory on the lambda line near the tricritical point.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527818
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  • 4
    Electronic Resource
    Electronic Resource
    "Oxide-free'' tip for scanning tunneling microscopy (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 305-307 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a new tip for scanning tunneling microscopy and a tip repair procedure that allows one to reproducibly obtain atomic images of highly oriented pyrolytic graphite with previously inoperable tips. The tips are shown to be relatively oxide-free and highly resistant to oxidation. The tips are fabricated with graphite by two distinct methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98451
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  • 5
    Electronic Resource
    Electronic Resource
    Damage annealing behavior of 3 MeV Si+-implanted silicon (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 172-174 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Cross-sectional transmission electron microscopy has been used to study the recrystallization behavior of a buried amorphous layer in 3 MeV Si+-implanted (100) silicon at a dose of 5×1015 cm−2. The lower (deeper) amorphous/crystalline (a/c) interface is found to be more abrupt compared to the upper (closer to the surface) a/c interface. During recrystallization similar rates of advancement of the two a/c interfaces are observed. V-shaped dislocations are observed in the completely recrystallized layer. The defect density in the upper recrystallized region is found to be higher than that in the lower recrystallized region. These observations are correlated with the shape of the damage profile. The secondary defects grown at higher temperatures (〉750 °C) are found to be very stable and difficult to anneal out. The overall recrystallization behavior of the buried amorphous layer is found to be similar to that of lower energy implants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98912
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  • 6
    Electronic Resource
    Electronic Resource
    Puff-gas coaxial-injected electromagnetic coaxial plasma gun (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 2763-2770 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have designed, built, and tested a pulsed gas-injection coaxial plasma gun driven by a 72-μF capacitor bank, with operating voltages of 60–80 kV (stored energy 130–230 kJ), and 1.6-MA, 1-μs rise-time current discharges. Using deuterium gas, we have obtained reliable delivery of all current to the gas and neutron yields of greater than 109. Current, voltage, inductance, and current position data are discussed and are compared with circuit solver models. Magnetic-probe and filtered scintillator photomultiplier detector array data on high-energy photon spectra were taken. A second puff-gas valve near the anode (inner electrode) axis at the muzzle end substantially improved the neutron yield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337865
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  • 7
    Electronic Resource
    Electronic Resource
    Reply to comments of Hill (1987)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 2586-2587 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Hill notes that the calculated energy loss rate for a lightning channel found in the original paper [Phys. Fluids 29, 2736 (1986)] is significantly smaller than the rate he obtained. This is explained primarily by his much smaller electrical conductivity. The value obtained in the original paper is justified and other features of the results are clarified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866100
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  • 8
    Electronic Resource
    Electronic Resource
    High pressure raman study of isotropic lineshapes of aqueous sodium nitrate solutions (1987)
    Springer
    Journal of solution chemistry 16 (1987), S. 55-69 
    Details
    ISSN: 1572-8927
    Keywords: Nitrate ion ; sodium nitrate ; Raman spectra ; high pressure ; concentrated solutions ; line shapes ; vibrational correlation functions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The isotropic lineshape of the v1 (A1) stretching mode of the nitrate ion in solutions of sodium nitrate has been studied at 25°C as a function of NaNO3 concentration ranging from 0.1 to 6M. The pressure dependence has been determined for 1 and 6M solutions at pressures ranging from 1 bar to 3 kbar. The isotropic band becomes more asymmetric with increasing concentration, and its v1 peak frequency undergoes a blue shift both with increased concentration and increased pressure. At low concentration the vibrational correlation function is well described by the Kubo formula, whereas at higher concentration it becomes more Gaussian. The experimental data indicate that the v1 vibrational lineshape in aqueous solutions of NaNO3 is dominated by strong intermolecular interactions which produce inhomogeneous broadening at higher concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647015
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  • 9
    Electronic Resource
    Electronic Resource
    Sensory cues and receptors for oviposition by Heliothis virescens (1987)
    Springer
    Entomologia experimentalis et applicata 43 (1987), S. 159-168 
    Details
    ISSN: 1570-7458
    Keywords: Heliothis virescens ; Tobacco budworm ; Noctuidae ; contact chemoreception ; olfaction ; vision ; mechanoreception ; tarsi ; antennae ; compound eyes ; ovipositor ; host finding ; cotton ; ground cherry ; soybean isolines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Les différentes récepteurs sensoriels (chimique, mécanique et visuel) des femelles d'H. virescens ont été rendus inactifs par traitement à l'acide, antennotectomie ou peinture des yeux avec un enduit noir du type vernis à ongles, pour étudier le déterminisme sensoriel de la sélection des hôtes lors de la ponte; les papillons avainet le choix entre le coton (Gossypium hirsutum), sur lequel ils pondent normalement, et Physalis angulata sur lequel on n'observe pas de pontes dans la nature. Au laboratoire, à faible distance, le choix de H. virescens dépendait en premier lieu des mécanorécepteurs et des récepteurs chimiques dits de contact (gustatifs), et non de la vision ou de l'olfaction. En présence d'un certain niveau de pilosité (P. angulata possède de courts poils capités), les femelles choisissent les plantes en fonction de la perception chimique dite de contact (gustation) tant qu'une paire de tarses reste intacte. Les sensilles chimiques de l'ovitube ne semblent pas jouer un rôle important à cet égard. La discussion a examiné ces résultats à la lumière des processus sensoriels utilisés par d'autres papillons.
    Notes: Abstract When given a choice of cotton (host) and ground cherry (non host) in a close range situation, Heliothis virescens (F.), the tobacco budworm, depends primarily on contact chemoreception and mechanoreception, and not olfaction or vision, to discriminate between these two plant species for oviposition. Further, in the presence of a certain level of hairiness (the non-host plant, ground cherry, has short capitate hairs), the females are capable of discriminating between these two plants based on contact chemosensory cues, if at least one pair of tarsi is intact. The contact chemosensilla on the ovipositor do not seem to be important for this purpose. These results are discussed in relation to the sensory cues and receptors for oviposition in other Lepidoptera, especially moths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00301747
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  • 10
    Electronic Resource
    Electronic Resource
    Regional specificity of functional sensory connections in developing spinal cord cultures varies with the incidence of spontaneous bioelectric activity (1987)
    Springer
    Development genes and evolution 196 (1987), S. 401-404 
    Details
    ISSN: 1432-041X
    Keywords: Spinal cord explant cultures ; Innervation ; Sensory connections ; Topography of afferent terminals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Cultured spinal cord explants in which little spontaneous bioelectric activity was present showed, when monitored using sensory ganglion-evoked monosynaptic action potentials, diffuse innervation by ingrowing afferent fibers at 3–4 weeks in vitro. In contrast, highly active cultures of the same age showed a strong tendency for functional sensory connections to be made within the dorsal half of the cord. Regional specificity was present in mature cultures (4–5 weeks in vitro), however, even when their spontaneous activity level was low. The results support earlier results using tetrodotoxin, and make it appear likely that centrally generated neuronal discharges can influence the topography of afferent terminals within the developing spinal cord.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00375781
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