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  • Articles: DFG German National Licenses  (10)
  • 1980-1984  (10)
Source
  • Articles: DFG German National Licenses  (10)
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Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Fucose Incorporation and Identification of Fucosylglycoproteins in Synaptosomes (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 37 (1981), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— A synaptosome-enriched fraction from sheep cortex was incubated with l-fucose. The uptake of the sugar into this preparation was dependent on time, temperature, and concentration. A A K mapp of 0.94 mm-l-fucose and a V maxapp value of 0.24 nm-l-fucose/mg synaptosomal soluble protein/20 min was determined. After incubation for 10 min at 25°C with l-[3H]fucose, 70% of the radioactive label was found in the soluble fraction. DEAE-cellulose chromatography resulted in the elution of three fucosylprotein peaks which were then characterised by gel filtration and sodium dodecyl sulfate-polyacrylamide electrophoresis (SDS-PAGE). At least eleven 3H protein-staining bands were identified with M. W. 13,000-115,000. Control experiments involving the incubation of the hexose with heat-treated synaptosomes and myelin, mitochondria, and microsomes indicated that the tritiated material associated with the synaptosomal soluble fraction was not due to nonspecific binding or to the presence of contaminating subcellular material. A 3H glycopeptide was identified, and on analysis the carbohydrate moiety was found to be rich in sialic acid, fucose, galactose, mannose, and N-acetylglucosamine. Mild acid treatment of the glycopeptide released fucose, which implies that this carbohydrate occupies a terminal position in the oligosaccharide chain. From these results it is proposed that synthesis or the modification of soluble fucosylglycoproteins is possible in synaptosomes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1981.tb04665.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Reply (1983)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 108 (1983), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.1983.tb00073.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    (23) Monilethrix (1984)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 111 (1984), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.1984.tb05293.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    (30) Case for diagnosis (1984)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 111 (1984), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.1984.tb05300.x
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Unusual vascular tumour of the scalp in association with lymphoid aggregates: a variant of angiolymphoid hyperplasia? (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cutaneous pathology 11 (1984), S. 0 
    Details
    ISSN: 1600-0560
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A 51-year-old mason presented with a large tumour on his scalp which had developed over the previous 2 years. Histological examination showed the presence of large vessels with muscular coats some of which appeared to be venules and others arterioles. They had markedly swollen cuboidal endothelial cells and a surrounding mononuclear cell infiltrate which in areas formed lymphoid follicles some of which had germinal centers. There was no evidence of tissue or blood eosinophilia. The unusual clinical and histological features of this case are emphasized and the nosology of this rare condition is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0560.1984.tb00411.x
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  • 6
    Electronic Resource
    Electronic Resource
    Ultrahigh gradient particle acceleration by intense laser-driven plasma density waves (1984)
    [s.l.] : Nature Publishing Group
    Nature 311 (1984), S. 525-529 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Space-charge waves driven by resonantly beating two laser beams in a high-density plasma can produce ultrahigh electric fields that propagate with velocities close to c. By phase-locking particles in such a wave, particles may be accelerated to very high energies within a very short ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/311525a0
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Oxidation states of the upper mantle recorded by megacryst ilmenite in kimberlite and type A and B spinel lherzolites (1984)
    Springer
    Contributions to mineralogy and petrology 85 (1984), S. 85-94 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The intrinsic oxygen fugacities of homogeneous, inclusion-free, megacryst ilmenites from the Frank Smith, Excelsior, Sekameng and Mukorob kimberlite pipes in southern Africa, and the alnöitic breccia in the Solomon Islands have been determined. Similar measurements have been made of the type A and B spinel peridotites from San Carlos in Arizona. The type A peridotites are characterised by oxygen fugacities close to the iron-wüstite buffer, similar to those of equivalent peridotite specimens from other continental and island arc environments. In strong contrast, the type B peridotites and all of the ilmenite megacrysts range between the oxygen fugacities defined by the nickelnickel oxide and fayalite-magnetite-quartz buffers. A close relationship between type B peridotites, oxidized metasomatizing fluids in the upper mantle and oxidized, silicaundersaturated magma types is suggested. It is unlikely that a solid elemental carbon phase can be an equilibrium crystallization product of kimberlite magmas if the ilmenite megacrysts represent the redox state of kimberlite melts. The ultimate source of the oxidizing fluids and the development of such a wide dispersion (〉4 orders of magnitude) in oxygen fugacities of the upper mantle is not clear, but may involve recycled lithosphere, fluids from the lower mantle or result from the relatively rapid diffusion of H2, compared with other potential volatile species, in the mantle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00380225
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  • 8
    Electronic Resource
    Electronic Resource
    New developments in diamond geology (1983)
    Springer
    Naturwissenschaften 70 (1983), S. 586-593 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Notes: Abstract New occurrences of kimberlite are reviewed together with the occurrences of diamond in nonkimberlitic volcanic rocks, in xenoliths within kimberlite and in orogenic peridotites occurring within fold mountain belts; and the various types of inclusions found within diamonds are then reviewed. Various arguments for the two main hypotheses of diamond formation (phenocrystal v. xenocrystal) are presented and it is concluded that diamonds are not precipitated from ascending melts. It is also concluded that diamond may form in a wide range of chemical environments and that the speed of ascent for the preservation of diamond during its ascent to the surface from its stability field depth is perhaps not as important as formerly believed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00377400
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  • 9
    Electronic Resource
    Electronic Resource
    Effects of juglone concentration on growth in vitro ofFrankia ArI3 andRhizobium japonicum strain 71 (1983)
    Springer
    Journal of chemical ecology 9 (1983), S. 1175-1183 
    Details
    ISSN: 1573-1561
    Keywords: Allelopathy ; black walnut ; Juglans nigra L. ; nitrogen fixation ; soil microorganisms ; Frankia ; Rhizobium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Nitrogen-fixing nurse crops and cocrops of plant species nodulated byFrankia andRhizobium have been used to promote the growth of black walnut trees. Although walnut is known to inhibit the growth of certain associated plants due to its allelopathic derivative juglone (5-hydroxy-1,4-napthoquinone), juglone inhibition of symbiotic, nitrogen-fixing soil microorganisms had not been investigated. This research revealed that a concentration of 10−3 M juglone absolutely inhibited the growth in vitro of aFrankia isolate from root nodules of red alder and ofRhizobium japonicum strain 71. Lesser concentrations of juglone inhibited the growth of these bacteria relative to the controls. The more-rapidly growingRhizobium strain exhibited slight growth at 10−4 M juglone concentration, whereasFrankia growth was completely inhibited. Considering both the susceptibility of the host plant and nitrogen-fixing endophyte to the allelochemical juglone, caution should be exercised in selecting nitrogen-fixing plants as nurse crops for black walnut.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00982220
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    The microstructure of rigid polyurethane foams (1982)
    Springer
    Journal of materials science 17 (1982), S. 220-224 
    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 A study has been made of the microstructure of rigid closed-cell polyurethane foams in the density range 35 to 420 kg m−3. Existing models for the structure of foams of this type have been evaluated using optical and scanning electron microscope techniques. Foams with a density of the order of 35 kg m−3 are shown to be best represented as a pentagonal dodecahedron. Medium density foams from 70 to 300 kg m−3 have a structure described as rounded polyhedra and high-density foams from 300 to 420 kg m−3 have an isolated spherical structure. A relationship between average cell size and density is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809056
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    Paper (German National Licenses)
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