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  • 1
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    (Appendix A) Relative abundance of benthic foraminifera in ODP Hole 138-844C (1995)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 138-844C; Alabaminella weddellensis; Anomalina globulosa; Bolivinellina spp.; Bulimina spp.; Cassidulina spp.; Cibicides spp.; Counting 〉63 µm fraction; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Epistominella exigua; Epistominella spp.; Eponides spp.; Fissurina spp.; Foraminifera, benthic; Globocassidulina spp.; Gyroidina spp.; Joides Resolution; Laticarinina pauperata; Leg138; Melonis spp.; North Pacific Ocean; Number of species; Nuttallides spp.; Ocean Drilling Program; ODP; Oridorsalis spp.; Pullenia quinqueloba; Pyrgo spp.; Sample code/label; Sigmoilina spp.; Uvigerina spp.; Valvulineria laevigata
    Type: Dataset
    Format: text/tab-separated-values, 336 data points
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  • 2
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    (Appendix B) Relative abundance of benthic foraminifera morphotypes in ODP Hole 138-844C (1995)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 138-844C; Counting 〉63 µm fraction; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Foraminifera, benthic; Foraminifera, benthic, epifaunal; Foraminifera, benthic, planispiral; Joides Resolution; Leg138; Miliolina; North Pacific Ocean; Ocean Drilling Program; ODP; Sample code/label; Trochospiral taxa
    Type: Dataset
    Format: text/tab-separated-values, 140 data points
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  • 3
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    (Table 2) Details of laminated intervals of ODP Leg 158 holes (1995)
    PANGAEA
    In:  Supplement to: Pearce, Richard B; Kemp, Alan E S; Baldauf, Jack G; King, S C (1995): High-resolution sedimentology and micropaleontology of laminated diatomaceous sediments from the eastern Equatorial Pacific Ocean. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 647-663, https://doi.org/10.2973/odp.proc.sr.138.135.1995
    Details
    Publication Date: 2024-01-09
    Description: Scanning electron microscope (SEM)-based analyses of the laminated diatom oozes encountered during Leg 138 reveal three major laminae types. The first lamina type is composed of multiple layers of ~20-?m-thick diatom mats, which form laminae dominated by assemblages of the pennate diatom, Thalassiothrix longissima. More than one variety/subspecies of T. longissima occurs within these laminae (referred to as the T. longissima Group). The second lamina type is composed of a mixed-assemblage of several species of diatoms (centric and pennate varieties), calcareous nannofossils, and subordinate quantities of radiolarians, silicoflagellates and foraminifers. The third lamina type is dominated by an assemblage of nannofossils and minor amounts of those fossil components mentioned above. This last form of lamination is compositionally similar to the background sediment type, foraminifernannofossil ooze (F-NO). Two lamina associations occur within the laminated intervals; the first comprises alternations of T. longissima Group and mixed-assemblage laminae (average thickness is ~6 mm) and the second is composed of T. longissima and nannofossil-rich laminae (average thickness is ~3.5 mm). The arrangement of laminae probably originates from the deposition of multiple layers of 20-?m-thick mats from one mat-flux episode. The much thinner nannofossil-rich laminae are interpreted to represent periods of more ônormalö deposition between mat-flux episodes. The occurrence of several varieties/subspecies of T. longissima within individual mat layers is consistent with observations of Rhizosolenia diatom mats in the modern world ocean.
    Keywords: 138-844B; 138-844C; 138-847B; 138-847C; 138-849B; 138-849D; 138-850B; 138-851E; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Group; Joides Resolution; Leg138; North Pacific Ocean; Number; Ocean Drilling Program; ODP; Range, maximum; Range, minimum; Sample code/label; Standard deviation; Thickness
    Type: Dataset
    Format: text/tab-separated-values, 372 data points
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  • 4
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    Benthic foraminifera in Neogene laminated diatom ooze of ODP Hole 138-844C (1995)
    PANGAEA
    In:  Supplement to: King, S C; Kemp, Alan E S; Murray, John W (1995): Benthic foraminifer assemblages in Neogene laminated diatom ooze deposits in the eastern equatorial Pacific Ocean (Site 844). In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 665-673, https://doi.org/10.2973/odp.proc.sr.138.137.1995
    Details
    Publication Date: 2024-01-09
    Description: Several widely correlatable intervals of laminated Thalassiothrix diatom mat deposits occur in Neogene sediments recovered from the eastern equatorial Pacific Ocean. The presence of laminated sediments in extensive areas of the deep open ocean floor raises fundamental questions concerning the cause of preservation of the laminations and the nature of the benthic environment during episodes of mat deposition. Traditional explanations for the preservation of laminations have centered on restriction of dissolved oxygen. Studies of benthic foraminifers through the laminated intervals show no evidence for an increase in absolute or relative abundance of species characteristic of a low oxygen environment, but rather a decrease in relative abundance of infaunal forms attesting to the impenetrability of the diatom meshwork formed by the interlocking Thalassiothrix frustules. These results support evidence from coring of the high tensile strength of the Thalassiothrix laminations suggesting that the diatom meshwork was of sufficient tensile strength and impenetrability to suppress infaunal benthic activity. Comparison of the relative abundances of foraminifers in the enclosing ôbackgroundö sediment of foraminifer nannofossil ooze and the laminated diatom oozes shows that some epifaunal species (e.g., Cibicides spp.) increase in relative abundance within the laminated sediment, whereas others (e.g., Epistominella exigua) show a marked decrease in relative abundance. Other species show more complex changes in abundance related to the occurrence of the laminated sediments, which may indicate a combination of controls that include the physical nature of the substrate and the amount of organic flux.
    Keywords: 138-844C; DRILL; Drilling/drill rig; Joides Resolution; Leg138; North Pacific Ocean; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 5
    Electronic Resource
    Electronic Resource
    Towards an understanding of the structural basis of ‘forbidden’ transport pathways in the Escherichia coli lactose carrier: mutations probing the energy barriers to uncoupled transport (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Molecular microbiology 4 (1990), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Recent progress in the analysis of mutants of the Eschenchia coli lactose carrier function is reviewed, with special emphasis on the structural basis for energy barriers which prevent ‘forbidden’ con-formational changes. Mutations which break down the barriers to forbidden isomerizations involving the binary carrier:sugar (CS) and carrier:proton (CH) complexes have been obtained in several laboratories. These mutants allow uncoupled transport of H+ or galactoside in the lactose carrier which normally couples cation and sugar movement in a 1:1 stoichiometry. These uncoupled mutants appear to be associated with changes in both sugar and cation recognition, suggesting that the physical interactions forming the basis for co-substrate recognition and uncoupling are not independently variable.By postulating that translocation involves transformation of the stable intermediate of the co-transport cycle to unstable transition state conformations of the carrier, it is possible to consider the consequences of mutagenesis in terms of transition state theory. Consistent with several experimental observations, the analysis predicts in each mutant the occurrence of more than one abnormality in the transport cycle (such as changes in sugar recognition, cation recognition or the coupling reaction). We have called the general phenomenon a ‘mutational double-effect’ because any mutation which alters the Gibbs free energy change of one reaction in the transport
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2958.1990.tb02053.x
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    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Production of dental alloy by the melt extraction technique (1978)
    Springer
    Journal of materials science 13 (1978), S. 1119-1124 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Filaments of a commercial dental alloy (Ag3Sn) have been produced using the technique of pendant drop melt extraction. The filaments are 50 μm in diameter with a mean grain size of 5μm. Both the mechanical and structural properties of these wires have been determined to show that the results are consistent with those predicted in a previous study on small flakes made by the “gun” splat quenching technique. The ultimate tensile strength and ductility of these wires are significantly superior to samples made by chill block casting. Simple amalgamation experiments have been undertaken to confirm that alloys made in this way would be acceptable in practical situations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00544709
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  • 7
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    Production of dental alloy by the melt extraction technique (1978)
    Springer
    Details
    Publication Date: 1978-05-01
    Print ISSN: 0022-2461
    Electronic ISSN: 1573-4803
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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  • 8
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    Density functional theory study of the magnetic moment of solute Mn in bcc Fe (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-07-21
    Description: Author(s): D. J. M. King, S. C. Middleburgh, P. A. Burr, T. M. Whiting, P. C. Fossati, and M. R. Wenman An unexplained discrepancy exists between the experimentally measured and theoretically calculated magnetic moments of Mn in α-Fe. In this study, we use density functional theory to suggest that this discrepancy is likely due to the local strain environment of a Mn atom in the Fe structure. The ferr... [Phys. Rev. B 98, 024418] Published Fri Jul 20, 2018
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 9
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    High-resolution sedimentology and micropalaeontology of laminated diatomaceous sediments from the eastern equatorial Pacific Ocean (Leg 138) (1996)
    Geological Society of London
    Details
    Publication Date: 1996-01-01
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
    Published by Geological Society of London
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