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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 93 (1989), S. 7841-7846 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 95 (1991), S. 6463-6470 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The reaction Cl+O2+M(large-closed-square)ClOO+M was studied by laser flash photolysis in the bath gases M=He, Ar, N2, and O2 over the temperature range 160–300 K and the pressure range 1–1000 bar. UV absorptions of ClOO were monitored, a maximum absorption cross section of σ(248 nm)=3.4×10−17 cm2 was determined. An expression for the equilibrium constant Kp =5.3×10−6 exp(+23.4 kJ mol−1/RT) bar−1 was derived between 180 and 300 K, which, by a third law analysis, yields ΔH(open circle)0 =−20.2±0,2 kJ mol−1. Limiting low pressure rate coefficients for Cl+O2 recombination of k0=[He]8.8×10−34(T/300 K)−3.0, k0=[O2]1.6×10−33(T/300 K)−2.9, k0=[N2]1.4×10−33(T/300 K)−3.9 cm6 s−1 were obtained over the range 160–260 K, as well as k0 (160 K)=[Ar]2.2×10−32 cm6 s−1. Rate constants for the reactions Cl+ClOO→Cl2+O2 or 2ClO, ClOO+ClOO→products, and ClOO+Cl2→Cl2O+ClO were also derived. The recombination Cl+O2(+M)→ClOO(+M) at pressures above 10 bar shows a transition to a high pressure plateau and, at pressures above 200 bar, to diffusion control. It is suggested that, like O+O2(+M)→O3(+M), the reaction is governed by a radical complex mechanism.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 6560-6569 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The recombination O+O2+M→O3+M in the bath gases M=He, Ar, and N2 was studied over the temperature range 90–370 K and the pressure range 1–1000 bar. The temperature and pressure dependences of the reaction rates show an anomalous behavior which is attributed to superpositions of mechanisms involving energy transfer, complex formation and participation of weakly bound electronically excited O3 states. The results also show an analogy to oxygen isotope enhancements observed in ozone recombination and dissociation. Experiments in compressed liquid N2 were also made showing a transition to diffusion control.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 46 (1974), S. 1508-1511 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 964-965 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Survival curves of B. megaterium spores irradiated at three different temperatures are shown in Fig. 1A. The corresponding photo-product production at these temperatures is given in Fig. 1B. The survival level at room temperature (22 C) is between that at ?80 C and that at ? 196 C, which is in ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 15 (1972), S. 443-454 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary The reproductive activity of the male leek moth, Acrolepia assectella, placed every day in the presence of new females, varies during the lifetime. This change in activity is not the result of exhaustion. The volume of the first spermatophores is much larger than that of the following ones, that depends upon the emission rank and not upon the time between two copulations. There is a correlation between the spermatozoa density in the different parts of the spermatheca and the spermatophore size. Oviposition and stimulation of vitellogenesis are functions of the male's age (copulation rank) which has little effect upon the fertility of the eggs; this remains always very high. Results obtained after incomplete copulations (in which spermatozoa without male secretions are emitted or the inverse) show that spermatozoa alone are necessary to stimulate vitellogenesis and release egg-laying but consequences of the reproductive activity of males on quantitative evolution of populations cannot be neglected.
    Notes: Abstract L'activité reproductrice des mâles d'Acrolepia assectella placés chaque jour en présence de nouvelles femelles varie au cours de la vie. Les effectifs de ponte et la vitellogénèse sont analysés en fonction du rang de copulation de la femelle, de l'âge du mâle, de la taille du spermatophore et de la densité de spermatozoïdes présents dans les différentes parties de la spermathèque. Les spermatozoïdes seuls semblent nécessaires au déclenchement de la ponte alors que la vitellogénèse est stimulée par un ensemble complexe de facteurs.
    Type of Medium: Electronic Resource
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  • 7
    Publication Date: 2014-12-04
    Description: Motivation : Next-generation sequencing (NGS) has revolutionized biomedical research in the past decade and led to a continuous stream of developments in bioinformatics, addressing the need for fast and space-efficient solutions for analyzing NGS data. Often researchers need to analyze a set of genomic sequences that stem from closely related species or are indeed individuals of the same species. Hence, the analyzed sequences are similar. For analyses where local changes in the examined sequence induce only local changes in the results, it is obviously desirable to examine identical or similar regions not repeatedly. Results : In this work, we provide a datatype that exploits data parallelism inherent in a set of similar sequences by analyzing shared regions only once. In real-world experiments, we show that algorithms that otherwise would scan each reference sequentially can be speeded up by a factor of 115. Availability : The data structure and associated tools are publicly available at http://www.seqan.de/projects/jst and are part of SeqAn, the C ++ template library for sequence analysis. Contact : rene.rahn@fu-berlin.de
    Print ISSN: 1367-4803
    Electronic ISSN: 1460-2059
    Topics: Biology , Computer Science , Medicine
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  • 8
    Publication Date: 2015-05-09
    Description: Author(s): M. C. Rahn, R. A. Ewings, S. J. Sedlmaier, S. J. Clarke, and A. T. Boothroyd We have performed powder inelastic neutron scattering measurements on the unconventional superconductor β − FeSe ( T c ≃ 8 K ) . The spectra reveal highly dispersive paramagnetic fluctuations emerging from the square-lattice wave vector ( π , 0 ) extending beyond 80 meV in energy. Measurements as a function of t... [Phys. Rev. B 91, 180501] Published Fri May 08, 2015
    Keywords: Superfluidity and superconductivity
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
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