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  • 1995-1999  (35)
  • 1975-1979  (27)
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  • 1
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    Summer Habitat Use by Muskoxen (Ovibos moschatus) and Peary Caribou (Rangifer tarandus pearyi) in the Canadian High Arctic (1976)
    Alfred Wegener Institute for Polar and Marine Research & German Society of Polar Research
    In:  EPIC3Polarforschung, Bremerhaven, Alfred Wegener Institute for Polar and Marine Research & German Society of Polar Research, 46(1), pp. 12-25, ISSN: 0032-2490
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: "Polarforschung" , peerRev
    Format: application/pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Comparison of collision rates in particle-in-cell, Monte Carlo, and Boltzmann codes (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 1299-1303 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Computational modeling is a key tool for studying collisional plasma discharges, including capacitive, inductive, and dc discharges. This work compares electron-neutral collision rates for a particle-in-cell code, a Monte Carlo code, a convected scheme Boltzmann code, and a spherical harmonic expansion Boltzmann code. In addition, comparisons with swarm experiments are presented where available. The comparison is performed over a range of reduced fields, E/N, appropriate to ac plasma display panels. The background gas is neon, with a simplified set of representative reactions. Ion and space charge effects are neglected. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362929
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  • 3
    Electronic Resource
    Electronic Resource
    High aspect ratio submicron silicon pillars fabricated by photoassisted electrochemical etching and oxidation (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 67 (1995), S. 1877-1879 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A technique for fabricating submicron free-standing silicon pillars has been developed. The silicon pillars have a high packing density, and aspect ratios over 50:1 can easily be achieved. Photoassisted electrochemical etching in hydrofluoric acid is used to etch deep macropores in n-type silicon wafers which have been patterned by standard photolithography. The regular macropores can be used for fabricating photonic band-gap structures. The bulk silicon remaining between the close-packed macropores is oxidized. Free-standing pillars are then formed by subsequently wet etching the silicon dioxide. The pillars are the initial structures for forming quantum wires using further oxidation and etch steps. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.114362
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  • 4
    Electronic Resource
    Electronic Resource
    A detailed three-dimensional quantum study of the Li+FH reaction (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 1238-1250 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Accurate quantum reactive scattering calculations in the full three-dimensional physical space have been carried out for the Li+FH reaction at zero total angular momentum using the adiabatically adjusting principal axis of inertia hyperspherical coordinate formalism. The procedures for fitting the potential energy surface, calculating the surface functions, and propagating the solutions in a coupled channel treatment are given and discussed. Features of the resulting reactive probability plots are analyzed, and simple explanations of a number of the quantum resonance and oscillatory features are found. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.468911
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  • 5
    Electronic Resource
    Electronic Resource
    Evolution of Competitive Mate Searching (1978)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 23 (1978), S. 173-196 
    Details
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.en.23.010178.001133
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  • 6
    Electronic Resource
    Electronic Resource
    Sperm morphometry in the Atlantic salmon (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 53 (1998), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: This study sampled sperm from wild Atlantic salmon to explore relationships between sperm form and function. Detailed measurements of sperm morphometry (head, flagellum and total length) and sperm activity (longevity and % motility) were made from 24 reproductively active males (13 anadromous and 11 mature parr) on two occasions post-stripping. There was significant between-male variance in total sperm length but this variance was not related to body size. Despite this variance in sperm length, no relationships were found between a male's sperm activity (longevity or % motility) and his sperm length. There were also no relationships between sperm head length and flagellar length, and no evidence for a trade-off between sperm length and numbers. It is suggested that the significant between-male variance in sperm morphometry supports diploid control of spermatogenesis: haploid expression of sperm phenotype would be manifested as profound variance within (and not between) each male's spermatozoal characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1998.tb01836.x
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  • 7
    Electronic Resource
    Electronic Resource
    An evolutionarily stable strategy approach to indiscriminate spite (1979)
    [s.l.] : Nature Publishing Group
    Nature 279 (1979), S. 419-421 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. l The possible outcomes when individuals settle out at random from a pool of n competitors to fill patches with 6 resource units. In one patch competitors consist of n -1 individuals who play Xp = 2, and a single mutant individual who plays Xm = 3. In the remaining P-l patches all competitors ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/279419a0
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  • 8
    Electronic Resource
    Electronic Resource
    Selfish genes, evolutionary games, and the adaptiveness of behaviour (1978)
    [s.l.] : Nature Publishing Group
    Nature 274 (1978), S. 849-855 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The science of sociobiology, which began in principle with the work of Fisher and Haldane and has more recently been developed by Hamilton, Maynard Smith, Trivers, Wilson and others, has been the centre of both scientific and political controversy. Dr Parker discusses the strengths and weaknesses ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/274849a0
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  • 9
    Electronic Resource
    Electronic Resource
    Solar-cycle dependence of galactic cosmic ray flux (1976)
    Springer
    Solar physics 48 (1976), S. 399-410 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract To investigate the relationship between solar activity and cosmic ray modulation, time series of the nucleonic flux and of solar plages, sunspots, centimeter radio noise, and the brightness of the white light corona at 1.1 and 1.5 solar radii from the center of Sun are cross-correlated. Data pertain to the years 1964–1967 during the ascending phase of the current solar cycle. The amplitudes and phases of correlation functions for filtered and unfiltered indices are discussed. The existence of a superior solar index for relating solar activity to long-term modulation is not yet demonstrated conclusively, and the time lag of modulation is too poorly determined to permit its use in estimating the radius of the modulation region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00152005
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  • 10
    Electronic Resource
    Electronic Resource
    Punishment in animal societies (1995)
    [s.l.] : Nature Publishing Group
    Nature 373 (1995), S. 209-216 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Although positive reciprocity (reciprocal altruism) has been a focus of interest in evolutionary biology, negative reciprocity (retaliatory infliction of fitness reduction) has been largely ignored. In social animals, retaliatory aggression is common, individuals often punish other group members ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/373209a0
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