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  • 1
    Publication Date: 2023-03-03
    Keywords: Arabian Sea; Calculated; Calculated, see reference(s); CAST; Center for Marine Environmental Sciences; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; Foraminifera, planktic, flux; Globigerina bulloides, flux; Globigerinella siphonifera, flux; Globigerinoides ruber white, flux; Globigerinoides sacculifer, flux; MARUM; Sample code/label; SO53; SO53_CAST_trap; Sonne; Temperature, water, interpolated; Trap, sediment; TRAPS
    Type: Dataset
    Format: text/tab-separated-values, 99 data points
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  • 2
    Publication Date: 2023-11-25
    Description: Coccolithophores are globally important marine calcifying phytoplankton. They contribute to the organic carbon pump through the primary production and the ballast of organic matter, and to the carbonate pump through the production of calcium carbonate. Here we compiled all available scanning electron microscopy (SEM) coccolithophore abundance observations. Taxa were standardized following NannoTax3 to a species level where possible. Subspecies (e.a. C. leptoporus subsp. leptoporus and C. leptoporus subsp. quadriperforatus) were grouped as single species. The database contains 2556 abundance observations from 35 different publications. The data span the period of 1993-2017, with observations from all ocean basins and all seasons, and at depths ranging from the surface to 5000 m. We limited our compilation to SEM observations (or observations which further identified samples with SEM) because SEM provides greater detail of coccolithophore diversity than more commonly used polarized light microscopy. Although this limits the number of observations, this allows for a more in-depth analysis of coccolithophore ecology, such as the ecological significance of the coccolithophore life cycle.
    Keywords: Acanthoica acanthifera; Acanthoica acanthos; Acanthoica biscayensis; Acanthoica maxima; Acanthoica quattrospina; Acanthoica spp.; Algirosphaera cucullata; Algirosphaera robusta; Algirosphaera spp.; Alisphaera capulata; Alisphaera extenta; Alisphaera gaudii; Alisphaera ordinata; Alisphaera pinnigera; Alisphaera quadrilatera; Alisphaera spp.; Alisphaera unicornis; Anthosphaera lafourcadii; Anthosphaera periperforata; Anthosphaera spp.; Balaniger virgulosa; Braarudosphaera bigelowii; Calcidiscus leptoporus; Calcidiscus spp.; Calciopappus caudatus; Calciopappus spp.; Calciosolenia brasiliensis; Calciosoleniaceae spp.; Calciosolenia murrayi; Calciosolenia spp.; Calicasphaera blokii; Calicasphaera concava; Calicasphaera diconstricta; Calyptrolithina multipora; Calyptrosphaera cialdii; Calyptrosphaera dentata; Calyptrosphaera heimdalae; Calyptrosphaera sphaeroidea; Canistrolithus spp.; Canistrolithus valliformis; Ceratolithus cristatus; Ceratolithus spp.; Chrysotila carterae; Chrysotila roscoffensis; Coccoliths, other; Coccolithus pelagicus; Corisphaera gracilis; Corisphaera spp.; Corisphaera tyrrheniensis; Coronosphaera maxima; Coronosphaera mediterranea; Coronosphaera spp.; Cyrtosphaera aculeata; Cyrtosphaera cidaris; Cyrtosphaera spp.; DATE/TIME; DEPTH, water; Discosphaera tubifera; Emiliania huxleyi; Ericiolus sp.; Florisphaera profunda; Flosculosphaera calceolariopsis; Formonsella pyramidosa; Gephyrocapsa ericsonii; Gephyrocapsa muellerae; Gephyrocapsa oceanica; Gephyrocapsa ornata; Gephyrocapsa spp.; Gladiolithus flabellatus; Gliscolithus amitakareniae; Hayaster perplexus; Helicosphaera carteri; Helicosphaera cornifera; Helicosphaera hyalina; Helicosphaera pavimentum; Helicosphaera spp.; Helicosphaera wallichii; Helladosphaera cornifera; Helladosphaera pienaarii; Helladosphaera vavilovii; Heterococcolithophores; Holococcolithophora kastriensis; Holococcolithophore spp.; Homozygosphaera spinosa; Homozygosphaera spp.; Homozygosphaera triarcha; Homozygosphaera vercelli; Hughesius youngii; Hymenomonas lacuna; Hymenomonas roseola; Hymenomonas spp.; Jomonlithus spp.; LATITUDE; LONGITUDE; Michaelsarsia adriaticus; Michaelsarsia elegans; Michaelsarsia spp.; Ochrosphaera neapolitana; Oolithotus antillarum; Oolithotus fragilis; Oolithotus spp.; Ophiaster formosus; Ophiaster hydroideus; Ophiaster minimus; Ophiaster reductus; Ophiaster spp.; Palusphaera sp.; Palusphaera spp.; Palusphaera vandelii; Pappomonas borealis; Pappomonas flabellifera; Pappomonas sp.; Pappomonas spp.; Papposphaera arctica; Papposphaera lepida; Papposphaera sagittifera; Papposphaera sp.; Papposphaera spp.; Papposphaera thomsenii; Picarola margalefii; Placorhombus ziveriae; Polycrater sp.; Polycrater spp.; Pontosphaera discopora; Pontosphaera japonica; Pontosphaera multipora; Pontosphaera spp.; Pontosphaera syracusana; Poricalyptra aurisinae; Poricalyptra isselii; Poricalyptra magnaghii; Poritectolithus maximus; Poritectolithus poritectum; Pseudowigwamma scenozonion; Reference/source; Reticulofenestra parvula; Reticulofenestra sessilis; Reticulofenestra spp.; Rhabdosphaera clavigera; Rhabdosphaera spp.; Rhabdosphaera xiphos; Sample method; Scyphosphaera apsteinii; Scyphosphaera spp.; see sample method; Solisphaera helianthiformis; Solisphaera spp.; Sphaerocalyptra adenensis; Sphaerocalyptra dermitzakii; Sphaerocalyptra quadridentata; Sphaerocalyptra sp.; Sphaerocalyptra spp.; Syracolithus bicorium; Syracolithus quadriperforatus; Syracolithus schilleri; Syracolithus sp.; Syracolithus spp.; Syracosphaera amoena; Syracosphaera ampliora; Syracosphaera anthos; Syracosphaera arethusae; Syracosphaera bannockii; Syracosphaera borealis; Syracosphaera castellata; Syracosphaera corolla; Syracosphaera delicata; Syracosphaera dilatata; Syracosphaera epigrosa; Syracosphaera exigua; Syracosphaera florida; Syracosphaera gaarderae; Syracosphaera halldalii; Syracosphaera hastata; Syracosphaera histrica; Syracosphaera lamina; Syracosphaera leptolepis; Syracosphaera marginiporata; Syracosphaera molischii; Syracosphaera nana; Syracosphaera nodosa; Syracosphaera noroitica; Syracosphaera orbiculus; Syracosphaera ossa; Syracosphaera prolongata; Syracosphaera protrudens; Syracosphaera pulchra; Syracosphaera reniformis; Syracosphaera rotula; Syracosphaera sp.; Syracosphaera spp.; Syracosphaera squamosa; Syracosphaera strigilis; Syracosphaera tumularis; Tergestiella adriatica; Tetralithoides quadrilaminata; Turrilithus latericioides; Turrisphaera spp.; Umbellosphaera irregularis; Umbellosphaera spp.; Umbellosphaera tenuis; Umbilicosphaera anulus; Umbilicosphaera foliosa; Umbilicosphaera hulburtiana; Umbilicosphaera sibogae; Umbilicosphaera spp.; Wigwamma antarctica; Wigwamma spp.; Wigwamma triradiata; Zygosphaera amoena; Zygosphaera marsilii
    Type: Dataset
    Format: text/tab-separated-values, 685008 data points
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  • 3
    ISSN: 1520-5029
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 35 (1995), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Glyphosate was applied at four rates under greenhouse conditions to Avena fatua L. plants at four stages of seed development. Application at anthesis completely prevented the formation of viable seeds. Application five days after anthesis (DAA) of the terminal floret of the panicle significantly reduced seed production at all herbi-cide rates used, and at 1.76 kg a.i. ha-1 no viable seeds were produced. When applied 10 DAA, only the highest rate of glyphosate resulted in substantial reduction in number of primary seeds, but seed viability suffered at all herbicide levels. Glyphosate applied 15 DAA still produced a significant decrease in primary and secondary seed production and biomass. Both the viability and the germination rate of seeds from treated plants were significantly affected. When the herbicide was applied to plants 5 DAA, no viable seeds were produced by plants surviving the highest rate, and all rates significantly reduced germination. Glyphosate applied 10 DAA significantly suppressed germination, with 1.76 kg a.i. ha-1 being the most effective rate. When applied to plants 15 DAA, only the highest rate of glyphosate significantly affected the overall germination of both primary and secondary seeds, but the normal imposition of dormancy was partially blocked in seeds from plants treated with 0.44 and 0.88 kg a.i. ha-1. These findings are relevant to chemical summerfallow and crop desiccation practices.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 4 (1964), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary. The roots of leafy spurge (Euphorbia esula L.) normally produce shoot buds abundantly near the soil surface but with decreasing frequency at increasing depths. By placing Fragments of roots collected from various depths in the soil in shallow flats in a glasshouse, it was demonstrated that root Fragments from all depths down to 2–8 m do not differ appreciably in rcgenerative capacity and this capacity is not dependent upon the presence of performed shoot buds. By collecting root fragments from the same stand throughout the growing season it was shown that regenerative capacity is lowest in June at the time of maximum flowering. The implications of these findings arc discussed in relation to the control of this species. Sur la régénération des fragments de racines de Euphorbia esula L.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 1340-1341 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This note attempts to describe a current controlled variable resistor conceived based on the property of critical current associated with a superconductor. This idea has been tested using high-temperature superconductor films.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 62 (1991), S. 2792-2794 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This paper aims at describing a low-temperature thermal sensor based on superconductor films which can be designed to have required variation of resistance with temperature through an appropriate geometry. Further, it has been shown that the temperature range can be varied to some extent by controlling the bias current.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 934-937 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This paper reports the variations in impedance with frequency of metal-oxide-semiconductor (MOS) structures on polycrystalline silicon. The origin of these impedance-frequency characteristics are qualitatively explained. These characteristics indicate that the MOS structure on polycrystalline silicon can be exploited to realize voltage controlled filters.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Computing 32 (1984), S. 279-295 
    ISSN: 1436-5057
    Keywords: 68 G 10 ; Image processing ; quadtrees ; three-dimensional border ; pattern recognition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Eine neue Methode zur 3D-Objektgrenzen-Bestimmung wird präsentiert: sie beginnt mit der 3D-Objektdarstellung in „linear octtree form”, gefolgt von einer Eliminierung interner Grenzen zwischen Knoten („nodes”) gleicher Größe und einer Löschung interner Knoten. Das Verfahren endet mit der Feststellung, daß nur mehr „border voxels” vorliegen. Der Algorithmus führt grundsätzlich eine Abbildung eines 3D-Objektes in seinen eigenen Grenzen durch, wobei es sich sowohl bei „input” als auch bei „output” um „linear octtrees” handelt. Es wird gezeigt, daß die Exekutionszeit des Algorithmus von der Ordnungkn(N+M) ist, worink die maximale Knotenzusammenfassung undN die Anzahl der Knoten des ursprünglichen „octtrees” bedeuten.n ist die Genauigkeit des Binärbildes („bilevel image”) undM ist die Anzahl der „border voxels”. Der Anwendungsbereich des vorgeschlagenen Algorithmus ist ziemlich groß: er bestimmt die äußeren Grenzen eines einfach zusammenhängenden Gebietes genauso wie die äußeren und inneren Grenzen eines Satzes mehrfach zusammenhängender Objekte.
    Notes: Abstract A novel approach to the 3D border determination is presented: it starts by representing the 3D object in linear octtree form, proceeds by eliminating internal boundaries between nodes of the same size while deleting internal nodes and terminates when only border voxels remain. The algorithm basically performs a mapping of the 3D object into its own border, with both input and output being represented as linear octtrees. The algorithm is shown to be executable inO(kn(N+M)) time, wherek andN are the maximum node grouping and number of nodes (respectively) of the initial linear octtree,n is the resolution of the bilevel image andM is the number of border voxels. The range of applicability of the proposed algorithm is quite wide: it can determine the external border of a simply connected region as well as the external and internal borders of a set of multiply connected objects, all at the same time.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 347 (1990), S. 364-365 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Alexeenko et al2 reported the observation of a PeV burst from the direction of the Crab Nebula during the period 14:00-19:00 UT on 23 February 1989 with their extensive air shower (HAS) array at Baksan (atmospheric depth, 840gcirT2; longi-tude, 43°E; latitude, 43°N). They ...
    Type of Medium: Electronic Resource
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