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  • 1985-1989  (46)
  • 1975-1979  (50)
  • 1950-1954  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Complexation of fibronectin with tissue transglutaminase (1989)
    s.l. : American Chemical Society
    Biochemistry 28 (1989), S. 628-635 
    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/bi00428a032
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  • 2
    Electronic Resource
    Electronic Resource
    The Marl Slate: a model for the precipitation of calcite, dolomite and sulphides in a newly formed anoxic sea (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 34 (1987), S. 0 
    Details
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Detailed studies of a new, complete Marl Slate core in South Yorkshire have provided information on isotopic (δ13C, δ18O, δ34S) and geochemical variations (trace elements and C/S ratio) which enable the formulation of a model for carbonate and sulphide precipitation in the Late Permian Zechstein Sea. Calcite and dolomite are intimately associated; the fine lamination, organic character and absence of benthos in the sediments are indicative of anoxic conditions. Lithologically the core can be divided into a lower, predominantly sapropelic Marl Slate (2 m) and an upper Transition Zone (0·65 m) of alternating sapropel and calcite-rich and dolomite-rich carbonates.C/S ratios are 2·22 for the Marl Slate and 1·72 for the Transition Zone respectively, both characteristic of anoxic environments. δ18O in the carbonates shows a large and systematic variation closely mirrored by variations in calcite/dolomite ratio. The results suggest a fractionation factor equivalent to a depletion of 3·8% for 18O and 1·5% for 13C in calcite. The δ34S values of pyrite are isotopically light (mean value = - 32·7%) suggesting a fractionation factor for the Marl Slate of almost 44%, typical of anoxic basins.The results are related to stratification in the early Zechstein Sea. Calcite was precipitated in oxic upper layers above the halocline. Below the oxic/anoxic boundary framboidal pyrite was precipitated, resulting in lower sulphate concentration and elevated Mg/Ca ratio (due to calcite precipitation). As a result of this, dolomite formation occurred below the oxic/anoxic interface, within the anoxic water column and in bottom sediments. Variations in calcite/dolomite ratios, and isotopic variations, are thus explained by fluctuations in the relative level of the oxic/anoxic boundary in the Zechstein Sea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3091.1987.tb00558.x
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  • 3
    Electronic Resource
    Electronic Resource
    Evidence of rapid changes in the Permian geomagnetic field during the Zechstein marine transgression (1977)
    [s.l.] : Nature Publishing Group
    Nature 270 (1977), S. 593-594 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Late Palaeozoic palaeomagnetic data are voluminous, largely because of the ubiquity of easily measured red beds and igneous rocks. Within these data there are systematic discrepancies and it has been suggested that the Permian geomagnetic field did not perfectly correspond to an axial dipole. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/270593a0
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  • 4
    Electronic Resource
    Electronic Resource
    Increase in human skeletal muscle lactate produced by fenfluramine (1976)
    [s.l.] : Nature Publishing Group
    Nature 262 (1976), S. 617-617 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Human skeletal muscle was obtained at surgery for total hip joint replacement. The preparation and incubation of the tissue (in Krebs-bicarbonate buffer with added bovine serum albumin Imgrnl-1 and glucose 16.67 x 10?3 M) was carried out using the method of Kirby, Leighton and Turner5. Muscle ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/262617a0
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  • 5
    Electronic Resource
    Electronic Resource
    Modified Carbobenzyloxy Groups in Peptide Synthesis (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 487-488 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] a-Naphthyl carbinol reacted with phosgene to give a product which was coupled with glycine in the normal manner, giving carbo-a-naphthylmethoxy-glycine (found: 0,65-2; H, 5-2; N, 5-3. C14H13O4N requires: C, 64-86; H, 5-02; N, 5-41 per cent), but this material began to decompose just below its ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167487a0
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  • 6
    Electronic Resource
    Electronic Resource
    Atomic resolution with a 600-kV electron microscope (1979)
    [s.l.] : Nature Publishing Group
    Nature 281 (1979), S. 49-51 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The electron gun incorporates a lanthanum hexaboride thermionic cathode, in the indirectly-heated rod configura tion9'10. For operation with a brightness 10 times greater than is normally obtained from a tungsten filament the cathode lifetime is regularly more than 100 h. Such brightness allows ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/281049a0
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  • 7
    Electronic Resource
    Electronic Resource
    Devonian palaeogeography of the Orcadian Basin and the Great Glen Fault (1976)
    [s.l.] : Nature Publishing Group
    Nature 259 (1976), S. 550-551 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A variety of modes of displacement have been put forward for the Great Glen Fault. Some are based on pre-Devonian evidence4'5 and are not considered relevant to our argument. We consider the following three: First, sinistral movements of 200-300 km (ref. 1) or - 500km (ref. 6). ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/259550a0
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  • 8
    Electronic Resource
    Electronic Resource
    Root squaring using level-index arithmetic (1989)
    Springer
    Computing 43 (1989), S. 171-185 
    Details
    ISSN: 1436-5057
    Keywords: 65G99 ; 65H05 ; Level-index ; symmetric level-index ; root-squaring ; polynomial equations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Das “symmetrische Höhenindexsystem” (sli) zur Zahlendarstellung vereinfacht die Überwachung der Rechengenauigkeit und vermeidet overflow—oder underflow—Probleme. In dieser Arbeit werden die praktischen Vorzüge des Systems am Beispiel des Graeffeverfahrens vorgeführt.
    Notes: Abstract The symmetric level-index,sli, system for representing numbers eases the monitoring of precision while avoiding the problems associated with overflow and underflow. In this paper the practical benefits of the system are displayed, using the root-squaring method of Graeffe as a vehicle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02241860
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  • 9
    Electronic Resource
    Electronic Resource
    Small is beautiful (1988)
    [s.l.] : Nature Publishing Group
    Nature 334 (1988), S. 392-392 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To ANY molecular biologist who has the time to reflect, it will no doubt seem surprising that only a decade ago we were (blissfully?) unaware of the existence of the intervening sequences that are present in many of the genes of eukaryotic cells. What seems all the more amazing is how far we have ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/334392b0
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  • 10
    Electronic Resource
    Electronic Resource
    The effect of buffered aspirin on plasma indomethacin (1975)
    Springer
    European journal of clinical pharmacology 8 (1975), S. 107-113 
    Details
    ISSN: 1432-1041
    Keywords: Aspirin ; indomethacin ; plasma levels ; dissolution ; interaction ; toxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Plasma indomethacin levels have been compared in 10 subjects following 100 mg of indomethacin from two different formulations, with similar disintegration and dissolution profiles. In four of these ten subjects plasma indomethacin levels were estimated after pretreatment with, and concurrent administration of, a buffered aspirin. The percentage of protein binding of indomethacin in the presence of salicylate was also estimated. No significant differences between peak plasma indomethacin levels with or without buffered aspirin were detected, but the rate of indomethacin absorption as shown by plasma levels, was significantly increased by pretreatment with and concurrent administration of, buffered aspirin. This was associated with a marked increase in side effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561558
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