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  • 1
    Electronic Resource
    Electronic Resource
    The Moons of Mars (1980)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Earth and Planetary Sciences 8 (1980), S. 527-558 
    Details
    ISSN: 0084-6597
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ea.08.050180.002523
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  • 2
    Electronic Resource
    Electronic Resource
    Mercury (1977)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 15 (1977), S. 97-126 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.15.090177.000525
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  • 3
    Electronic Resource
    Electronic Resource
    Hyperion’s sponge-like appearance (2007)
    [s.l.] : Nature Publishing Group
    Nature 448 (2007), S. 50-56 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Hyperion is Saturn’s largest known irregularly shaped satellite and the only moon observed to undergo chaotic rotation. Previous work has identified Hyperion’s surface as distinct from other small icy objects but left the causes unsettled. Here we report high-resolution images that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature05779
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  • 4
    Electronic Resource
    Electronic Resource
    Origin of the Solar System dust bands discovered by IRAS (1984)
    [s.l.] : Nature Publishing Group
    Nature 312 (1984), S. 505-509 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Measurements of longitudinal variations in the brightness and the latitude of the Solar System dust bands observed by the Infrared Astronomical Satellite determine the orbital elements of the particles involved. They may also allow discrimination between cometary and asteroidal models of the origin ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/312505a0
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  • 5
    Electronic Resource
    Electronic Resource
    The Free Dynamics of Pulsars (1970)
    [s.l.] : Nature Publishing Group
    Nature 228 (1970), S. 986-988 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Other articles1-4 have already discussed the rotational dynamics of pulsars under the action of torques caused by the electromagnetic forces present; they have looked into the alignment of the magnetic dipole in the oblique rotator model and the decay of the spin itself which indicates the pulsar ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/228986a0
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  • 6
    Electronic Resource
    Electronic Resource
    Euclidean controllable realizations of linear hereditary systems (1978)
    Springer
    Theory of computing systems 12 (1978), S. 133-149 
    Details
    ISSN: 1433-0490
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract A realization problem for a class of linear hereditary systems is formulated and “state space” representations are constructed from inputoutput relations. The resulting hereditary models are shown to be Euclidean controllable, and comparisons are made between these hereditary realizations and other recently developed theories.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01776570
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  • 7
    Electronic Resource
    Electronic Resource
    Construction of a designer chromosome in tobacco (1994)
    Springer
    Theoretical and applied genetics 87 (1994), S. 837-842 
    Details
    ISSN: 1432-2242
    Keywords: Agrobacterium tumefaciens ; Nicotiana africana ; Methotrexate resistance ; Potyvirus resistance ; Linkage analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The tobacco (Nicotiana tabacum L.) breeding line NC 152 is a doubled haploid that possesses an addition chromosome from N. africana [Merxm. and Buttler]. A gene on this chromosome confers potyvirus resistance (PotyR). Our objective was to use the addition chromosome as a base on which to construct a designer chromosome containing a foreign gene linkage package. A mutant dhfr gene conferring resistance to methotrexate (Mtx) was inserted into NC 152-haploid (n = 25) leaf tissue via Agrobacterium tumefaciens-mediated transformation. After chromosome doubling, 135 NC 152dhfr transformants (2n = 50) were pollinated with the potyvirus-susceptible (PotyS) cultivar ‘McNair 944’ (2n = 48). Linkage analysis was performed in the BC1 generation. Two transformants, NC 152dhfr-996 and NC 152dhfr-1517 exhibited complete linkage between Mtx resistance (MtxR) and PotyR. Segregants from these two transformants which were MtxR and PotyR possessed 49 chromosomes, while Mtx sensitive (MtxS) and PotyS progeny possessed 48 chromosomes. Eighty percent of the NC 152dhfr transformants transmitted the dhfr gene as one locus. Other foreign genes can be directed to the addition chromosome through transformation followed by selection for single loci with linkage to PotyR or MtxR. The integrity of both the foreign-gene linkage package and the rest of the genome will be maintained because recombination between the N. africiana and the N. tabacum chromosomes has not been observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00221136
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  • 8
    Electronic Resource
    Electronic Resource
    Numerical simulations of narrow planetary rings: An animation (1988)
    Springer
    Celestial mechanics and dynamical astronomy 45 (1988), S. 321-322 
    Details
    ISSN: 1572-9478
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01229017
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  • 9
    Electronic Resource
    Electronic Resource
    Thermodynamics of bolaform electrolytes. III. Partial and apparent molal volumes in H2O and D2O (1974)
    Springer
    Journal of solution chemistry 3 (1974), S. 289-305 
    Details
    ISSN: 1572-8927
    Keywords: Apparent molal volumes ; partial molal volumes ; density ; bolaform electrolytes ; H2O ; D2O ; structure effect ; cavity effect ; cation pairing ; volumes of transfer ; solvent isotope effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The apparent,φ v, and partial, $$\bar V$$ 2, molal volumes of a series of homologousbis-tetraalkylammonium bromides have been determined in H2O and D2O at 25°C from precision density measurements carried out with a buoyancy densimeter and a dilatometer. The Debye-Hückel theoretical limiting slope forφ v and $$\bar V$$ 2 as a function of the square root of molar concentration is approached for all of the salts studied. the concentration dependence ofφ v and $$\bar V$$ 2 is anomalously large and negative in both solvents, with the deviations being less negative in D2O than in H2O. The bolaform salts have larger $$\bar V$$ 2 o values in H2O than in D2O, contrary to the observed behavior of R4NX salts. Possible origins of the solvent isotope effects observed are discussed in terms of structural and cavity contributions to the measured volumes. A comparison of thermodynamic transfer functions (H2O→D2O) for Et4N Br and the corresponding bolaform analog appropriate in the consideration of cation-cation pairing of Et4N+ ions shows inconclusive evidence for the support of the cation pair theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00648227
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  • 10
    Electronic Resource
    Electronic Resource
    Thermodynamics of bolaform electrolytes. IV. Enthalpies and partial molal heat capacities in H2O, D2O, and dimethylsulfoxide (1975)
    Springer
    Journal of solution chemistry 4 (1975), S. 369-381 
    Details
    ISSN: 1572-8927
    Keywords: Bolform electrolytes ; methylene group ; partial molal heat capacity ; partial molal heats of solution ; H2O ; D2O ; dimethylsulfoxide ; structure effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The partial molal heats of solution ΔH s o and the partial molal heat capacities of solution ΔC p o of the bolaform salts [Et3N(CH2)nNEt3]Br2 and [allyl3N(CH2)nNallyl3]Br2 have been obtained at infinite dilution in dimethylsulfoxide (DMSO). A comparison of these data with the results of previous thermodynamic studies of the same solutes in aqueous solvents has been carried out. The observed differences have been interpreted in terms of solute-induced solvent structural effects occurring in aqueous solvent media. Partial molal heat capacities of the bolaform salts at infinite dilution in DMSO, H2O, and D2O have been calculated from ΔC p o data and previously reported values of the heat capacities of the crystalline state. The data clearly show that the structure-promoting capabilities of these salts in aqueous solvents increase with increasing hydrocarbon content. A comparison of contributions to partial molal heat capacities of methylene groups in the bolaform and R4N+ series of salts reveals that similarities exist between the solvation effects of CH2 groups in the normal alkyl chain of the R4N+ cations and in the bridging alkyl chain of the bolaform cation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00645570
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