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  • 1
    facet.materialart.
    Unknown
    Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013 (1999)
    PANGAEA
    In:  Supplement to: Fagel, Nathalie; Innocent, Christophe; Stevenson, Ross K; Hillaire-Marcel, Claude (1999): Deep circulation changes in the Labrador Sea since the Last Glacial Maximum: New constraints from Sm-Nd data on sediments. Paleoceanography, 14(6), 777-788, https://doi.org/10.1029/1999PA900041
    Details
    Publication Date: 2023-12-15
    Description: Sm-Nd concentrations and Nd isotopes were investigated in the fine fraction of two Labrador Sea cores to reconstruct the deep circulation patterns through changes in sedimentary supply since the last glacial stage. Three sources are involved: the North American Shield, Palaeozoic rocks from northeastern Greenland, and mid-Atlantic volcanism. The variable input of these sources provides constraints on the relative sedimentary supply, in conjunction with inception of deep currents. During the last glacial stage a persistent but sluggish current occurred inside the Labrador Basin. An increasing discharge of volcanic material driven by the North East Atlantic Deep Water is documented since 14.3 kyr, signaling the setup of a modern-like deep circulation pattern throughout the Labrador, Irminger, and Iceland basins. During the last deglacial stage the isotopic record was punctually influenced by erosion processes related mainly to ice-sheet instabilities, especially 11.4, 10.2, and 9.2 kyr ago.
    Keywords: Age, 14C milieu/reservoir corrected (-400 yr); Age, dated; Age, mineral; Calendar age; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; HU90-13-013; HUD90/13; Hudson; Marine isotopic stage; Neodymium; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; Northwest Atlantic; PC; Piston corer; Samarium; Samarium-147/Neodymium-144 ratio; ε-Neodymium
    Type: Dataset
    Format: text/tab-separated-values, 555 data points
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  • 2
    facet.materialart.
    Unknown
    (Table T3) Element oxides of glass fragments from ODP Hole 203-1243B (2006)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 203-1243B; Aluminium oxide; Calcium oxide; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Elements, total; Iron; Joides Resolution; Leg203; Lithologic unit/sequence; Magnesium oxide; Manganese oxide; Microprobe; North Pacific Ocean; Ocean Drilling Program; ODP; Phosphorus pentoxide; Potassium oxide; Silicon dioxide; Sodium oxide; Titanium dioxide
    Type: Dataset
    Format: text/tab-separated-values, 2532 data points
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  • 3
    facet.materialart.
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    (Table T2) Element oxides of glass fragment thin sections from ODP Hole 203-1243B (2006)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 203-1243B; Aluminium oxide; Calcium oxide; CAMECA electron microprobe; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Elements, total; Iron; Joides Resolution; Leg203; Magnesium oxide; Manganese oxide; North Pacific Ocean; Ocean Drilling Program; ODP; Phosphorus pentoxide; Piece; Potassium oxide; Sample code/label; Sample code/label 2; Silicon dioxide; Sodium oxide; Sulfur, total; Titanium dioxide
    Type: Dataset
    Format: text/tab-separated-values, 86 data points
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  • 4
    facet.materialart.
    Unknown
    Element oxides in basaltic glass fragments from ODP Hole 203-1243B (2006)
    PANGAEA
    In:  Supplement to: Moberly, Ralph; Ishii, Teruaki; Garcia, M O; Ross, K; Artita, Kimberly (2006): Enriched, transitional, and normal mid-ocean-ridge basalt glass, ODP Leg 203. In: Schultz, A; Orcutt, JA; Davies, TA (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 203, 1-36, https://doi.org/10.2973/odp.proc.sr.203.002.2006
    Details
    Publication Date: 2024-01-09
    Description: Sand-sized basaltic glass fragments were recovered in the liner of Core 203-1243B-19R, the deepest recovery from Hole 1243B. Microprobe analysis of 582 glassy cuttings cluster into five compositionally distinct groups, most of which are unlike the lithologic units described on board ship. Drilling operations intended to sweep cuttings from the caving hole and differences between the cuttings and geochemically distinct lithologic units of the upper part of the basement indicate that the cuttings came mainly, if not entirely, from the lower part of the hole. They give information about the part of Hole 1243B that had poor core recovery. Enriched mid-ocean-ridge basalt (MORB) from the upper part of the hole and transitional MORB from two groups of cuttings from sources low in the hole may be a trace of the Galápagos plume on the Pacific plate or may be a normal consequence of eruptions from two distinct magmas on fast-spreading crust.
    Keywords: 203-1243B; DRILL; Drilling/drill rig; Joides Resolution; Leg203; North Pacific Ocean; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 5
    facet.materialart.
    Unknown
    (Table T6) Element oxides of glass fragments from ODP Hole 203-1243B (2006)
    PANGAEA
    Details
    Publication Date: 2024-04-16
    Keywords: 203-1243B; Aluminium oxide; Calcium oxide; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Elements, total; Inductively coupled plasma atomic emission spectroscope (ICP-AES); Iron; Joides Resolution; Leg203; Magnesium oxide; Manganese oxide; North Pacific Ocean; Ocean Drilling Program; ODP; Phosphorus pentoxide; Potassium oxide; Sample code/label 2; Silicon dioxide; Sodium oxide; Titanium dioxide
    Type: Dataset
    Format: text/tab-separated-values, 108 data points
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  • 6
    Electronic Resource
    Electronic Resource
    Glucose analog inhibitors of glycogen phosphorylase: the design of potential drugs for diabetes (1991)
    s.l. : American Chemical Society
    Biochemistry 30 (1991), S. 10101-10116 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00106a006
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  • 7
    Electronic Resource
    Electronic Resource
    Relationship of queen number and worker size in polygyne colonies of the fire antSolenopsis invicta (1996)
    Springer
    Insectes sociaux 43 (1996), S. 303-307 
    Details
    ISSN: 1420-9098
    Keywords: Monogyny ; polygyny ; caste ; fire ants ; Solenopsis invicta
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We examined the relationship between queen number and worker size in colonies of the fire antSolenopsis invicta. Worker size in monogyne colonies was significantly greater than in polygyne colonies; furthermore, polygyne colonies snowed a strong negative linear relationship between queen number and worker size. Higher queen pheromone level and/or decreased food availability accompanying an increase in queen number likely play important roles in producing the observed patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01242931
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  • 8
    Electronic Resource
    Electronic Resource
    Measurements of the total solid material in the bands and interbands of the polytene chromosomes in living cells of chironomus (1963)
    Springer
    Chromosoma 14 (1963), S. 111-122 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The refractive indices of a number of bands and interbands of the polytene chromosomes in the living salivary gland cells of two species of Chironomus were measured with an interference microscope, and values were obtained for the total solid material present in each region. To make these measurements it was necessary to compress the cells until virtually no cytoplasm lay above or below the nucleus, but this produced no deleterious effects on the cells as a whole. The results indicated that there is not less than 25% of solid material in the band regions of these chromosomes, and not more than 15% of solids in the interbands. The nuclear sap of these cells was found to contain about 12% of solid material. Similar refractive index measurements were made on the bands and interbands of isolated chromosomes mounted in saline and in a 12% isotonic saline/protein solution of the same refractive index as the nuclear sap. In both these media the bands were again found to contain at least 10% more material than the interbands, but their refractive indices were lower in the saline than they were in the intact cells and markedly higher in the saline/protein. It is therefore concluded that the isolated chromosomes are, to some extent, permeable, and can permit the entry of protein molecules from the mounting medium and the egress of some or their own material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332611
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  • 9
    Electronic Resource
    Electronic Resource
    Location, catalytic activity, and subunit composition of NAD-reducing hydrogenases of some Alcaligenes strains and Rhodococcus opacus MR22 (1997)
    Springer
    Archives of microbiology 167 (1997), S. 172-176 
    Details
    ISSN: 1432-072X
    Keywords: Key words Soluble NAD-reducing hydrogenase ; Membrane-bound hydrogenase ; Diaphorase ; Rhodococcus opacus 1b ; Alcaligenes eutrophus H16
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Six new strains of Alcaligenes enriched for and isolated as nickel-resistant bacteria resemble Alcaligenes eutrophus H16 and contain both an NAD-reducing, tetrameric soluble hydrogenase and a membrane-bound hydrogenase. None of the soluble hydrogenases share with the Rhodococcus opacus MR11 enzyme tetramer the property of being cleaved easily into two dimeric moieties [a hydrogenase (βδ) and an NADH:acceptor oxidoreductase (αγ)], in the absence of nickel or at low ionic strength. The soluble hydrogenase of the newly isolated strain MR22 of R. opacus equalled that of strain MR11. The absence of a membrane-bound hydrogenase in Alcaligenes denitrificans strain 4a-2 and in Alcaligenes ruhlandii was confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002030050431
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  • 10
    Electronic Resource
    Electronic Resource
    FORMATION OF β-LACTOSE FROM THE STABLE FORMS OF ANHYDROUS ã-LACTOSE (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 45 (1980), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Treatment of either of the stable anhydrous crystalline forms of or-lactose with potassium methoxide in methanol at reflux does not result in the formation of β-lactose, whereas the latter is formed from α-lactose monohydrate or hygroscopic anhydrous α-lactose under these conditions. We find that when β-lactose is added to a reaction mixture containing either form of stable anhydrous α-lactose, conversion of α-lactose to β-lactose proceeds readily. Further, we show that this conversion may be a solid-solid transformation rather than dissolution of α-lactose followed by crystallization as β-lactose.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1980.tb03872.x
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