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  • 1
    Call number: SR 90.0001(2001)
    In: U.S. Geological Survey bulletin
    Type of Medium: Series available for loan
    Pages: III, 19 S.
    Series Statement: U.S. Geological Survey bulletin 2001
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Series available for loan
    Series available for loan
    Washington, DC : United States Gov. Print. Off.
    Associated volumes
    Call number: SR 90.0001(1303)
    In: U.S. Geological Survey bulletin
    Type of Medium: Series available for loan
    Pages: III, 31 S.
    Series Statement: U.S. Geological Survey bulletin 1303
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 54 (1979), S. 101-108 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Fishery production and food webs have been studied on the Scotian Shelf and upper continental slope along a transect running 270 km SE of Halifax, Canada. The area (TCNAF Division 4W) supports a fishery of roughly 0.15x106 metric tons. Overall primary production of the shelf waters is 102 g C m-2 year-1 and of the slope wacers about 128 g C m-2 year-1. Demersal fish production (average 4.1 kcal m-2 year-1) is highest over the shelf and declines in an offshore direction, while pelagic fish production (average 16 kcal m-2 year-1) is highest over the slope and declines in an inshore direction. Hypothetical food webs of these two intergrading ecosystems have been constructed, based on data for primary production, fish catches, and the biomasses of zooplankton and macrobenthos. These lead us to suggest that there are basic differences in food chains and efficiencies between the two ecosystems that account for their differences in production. Although primary production is 17% higher on an average on the Nova Scotian transect than in the North Sea, the apparent zooplankton and macrobenthos production is 31% lower and macrobenthos production may also be lower. Overall fish catch from the Scotian Shelf and slope is about 47% lower per unit area than the catch in the North Sea, despite the fact that the demersal catches are identical. This is accounted for by a much lower overall pelagic catch from the Nova Scotian area, centered in a region that is small compared to the total area. Fish production in different regions cannot be predicted merely on the basis of differences in level of primary production, but must take into account differences in the structure of the ecosystems.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Previous work has demonstrated linkage between Ly-6, H-30, and a locus, Ril-1, that affects susceptibility to radiation-induced leukemia. Results of preliminary linkage analyses suggested further that the cluster might be linked to Ly-11 on the proximal portion of mouse chromosome 2. Using molecular probes to examine somatic cell lines and recombinant inbred and congenic strains of mice, we have re-evaluated these linkage relationships. A cloned genomic DNA fragment derived from a retroviral site has been used to define a novel locus, Pol-5, that is tightly linked to both H-30 and Ril-1 as shown by analysis of the B6.C-H-30 c congenic mouse strain. Following the segregation of the Pol-5 mouse-specific DNA fragment in a series of somatic cell hybrids carrying various combinations of mouse chromosomes on a rat or Chinese hamster background mapped Pol-5 to mouse chromosome 15. During the course of these studies, restriction fragment length polymorphisms were defined associated with several loci, including Pol-5, Ly-6, Sis, Ins-3, Krt-1, Int-1, and Gdc-1. Three of these loci, Sis, Int-1, and Gdc-1, have been previously mapped to chromosome 15 by others using somatic cell hybrids or isoenzyme analyses. Following the inheritance of these eight loci in recombinant inbred strains of mice allowed the definition of a linkage group on the chromosome with the order Ly-6-Ril-1--Sis--H-30--Pol-5--Ins-3--Krt-1--Int-1--Gdc-1. Analyses of alleles inherited as passengers in B6.C-H-30 c, C3H.B-Ly-6 b, and C57BL/6By-Eh/+ congenic mouse strains and in situ hybridization experiments support the above gene order and indicate further that the cluster is located on distal chromosome 15, with Ly-6 and Sis near Eh.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 6371-6377 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: An expression has been derived for the analytical evaluation of the energy gradient within the linear combination of Gaussian-type orbitals—local spin density method. This expression is valid for any exchange-correlation energy functional which can be represented in a density gradient expansion. In practice, because the exchange-correlation terms are fitted with auxiliary functions, one has to introduce an approximation. Results are reported of tests on diatomics that show that it is possible to attain a typical accuracy of ±0.01 a.u. on equilibrium distances, relative to the energy minimum. The formulas for molecular integral derivatives that we implemented are based on the highly efficient recurrence formulas of Obara and Saika. We report here an additional formula for angular momentum transfer which is very useful for efficient programming of the gradient. In all cases studied, the time required to compute the gradient is a fraction of the time spent to solve the self-consistent-field Kohn–Sham equations.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 2919-2926 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Both spin-polarized and unpolarized linear combinations of Gaussian-type orbitals-model core potential-local spin density (LCGTO-MCP-LSD) calculations have been performed for clusters representing the three possible high symmetry chemisorption sites for carbon on the (100) surface of nickel. We found that the most stable chemisorption site is the fourfold hollow, in agreement with the experimental evidence. For this site, the computed equilibrium NiC distances are 1.79 and 1.77 A(ring) at the spin-polarized and unpolarized levels, very close to the most recent experimental measurements. The calculated spin-polarized vibrational frequency perpendicular to the surface is found to be 407 cm−1 (410 cm−1 expt). The values of the binding energy are 11.5 and 11.8 eV at polarized and unpolarized levels, respectively (∼7 eV, expt); the carbon atom is strongly bound, essentially by a triple bond formed by interaction of the px, py, and pz orbitals of carbon with, primarily, the d orbitals of the four nearby surface nickel atoms. The effect of carbon chemisorption on the nickel magnetism has also been studied. The addition of the carbon atom reduces the spin magnetic moment of pure nickel by 2 or 4 μB depending on which of the two nearly degenerate nickel cluster states is taken as reference. The reduction of atomic spin magnetic moments is clearly larger on the 4 nickel atoms nearest to the carbon. The global and local (atomic) reduction in spin magnetic moments originate from some up-spin d density of states being pushed above EF, through antibonding interactions with the carbon 2p orbitals, and hence emptied.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 92 (1990), S. 5422-5429 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A practical formulation of the analytical second and third derivatives of the linear combination of Gaussian type orbitals–local spin density energy is presented. The equations obtained hold with little modification for density gradient corrected exchange-correlation functionals. The efficiency and accuracy of future computer implementation of these equations are discussed.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Meat Science 26 (1989), S. 233-244 
    ISSN: 0309-1740
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Physics, Section A 231 (1974), S. 334-348 
    ISSN: 0375-9474
    Keywords: Nuclear reactions
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Aquacultural Engineering 3 (1984), S. 275-287 
    ISSN: 0144-8609
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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