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  • 1
    Electronic Resource
    Electronic Resource
    Adenomyoepithelioma of the breast with undifferentiated carcinoma component (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 24 (1994), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1994.tb00522.x
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  • 2
    Electronic Resource
    Electronic Resource
    Lead, mercury, and cadmium in feathers of tropical terns in Puerto Rico and Australia (1991)
    Springer
    Archives of environmental contamination and toxicology 21 (1991), S. 311-315 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Levels of lead, cadmium, and mercury were examined in breast feathers of terns nesting on offshore islets near Culebra, Puerto Rico and on Michaelmas Cay and Heron Island on the Great Barrier Reef, Australia. Levels of all metals in these tropical terns were predicted to be lower than those of terns nesting in temperate regions, because the tropical species feed offshore of non-industrial areas where contamination should be less than for temperate-nesting species that feed in inshore estuaries near industrialized areas. This prediction was not supported by the evidence. In Puerto Rico, lead and cadmium levels were highest in bridled tern (Sterna anaethetus), and mercury levels were highest in sooty (S. fuscata) and roseate tern (S. dougallii). In Australia, levels of lead and mercury were higher in black noddy (A. minutus) and lower for sooty tern; and cadmium levels were highest for brown noddy (A. stolidus) and sooty tern, and lowest for black noddy. Metal levels for the tropical terns nesting in Puerto Rico and Australia generally were not lower than levels reported for temperate-nesting or mainland nesting birds (except for mercury in Australia).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01055351
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Heavy metals in the hair of opossum from Palo Verde, Costa Rica (1994)
    Springer
    Archives of environmental contamination and toxicology 27 (1994), S. 472-476 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Levels of lead, cadmium, mercury, chromium, and manganese were measured in the hair of opossum (Didelphis virginiana) from Palo Verde, Guanacaste, Costa Rica. This area has some agriculture, but is slated for extensive water development that will increase ecosystem exposure to a variety of agricultural chemicals. Metal levels were generally not inter-correlated except for chromium and lead, chromium and cadmium, and cadmium and lead. There were significant gender differences only for lead and chromium, with the significantly smaller females having higher levels. It is suggested that hair from mammals, particularly abundant ominivores may be useful, bioindicators of environmental quality over a long time period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00214838
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Long-term plasma exchange in a case of Refsum's disease (1991)
    Springer
    European archives of psychiatry and clinical neuroscience 241 (1991), S. 82-84 
    Details
    ISSN: 1433-8491
    Keywords: Heredopathia Atactica Polyneuritiformis ; Refsum's disease ; Plasmapheresis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Refsum's disease (Heredopathia atactica polyneuritiformis) is caused by accumulation of phytanic acid in all body tissues due to an inherited failure of alphaoxidation of branched chain fatty acids. Plasmapheresis has been reported to be beneficial by removal of phytanic acid from the blood. We describe a patient with Refsum's disease in whom long-term plasmapheresis did not improve clinical, biochemical or electrophysiological parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02191145
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  • 5
    Electronic Resource
    Electronic Resource
    Cloning, sequencing, and expression inEscherichia coli of the coat protein gene of a new potyvirus infecting South AfricanPassiflora (1993)
    Springer
    Archives of virology 128 (1993), S. 29-41 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Complementary DNA representing 1418 nucleotides (nt) of the 3′-poly(A)-proximal tract of the genomic RNA of a potyvirus causing woodiness disease in South African passionfruit, was cloned and sequenced. The sequence contained a single long open reading frame (ORF) of 1188 nt with no initiation codon, and a 3′-non-coding region (3′-NCR) of 230 nt followed by a poly-adenylate tract. Comparison of the ORF with other potyviral coat protein (CP) sequences led to the prediction that a 279 residue CP of MW 31722 is encoded by 836 nt at the 3′-terminus of the ORF. This virus is not merely a South African strain of passionfruit woodiness virus (PWV): the deduced CP sequence is only distantly related to CPs of other sequenced strains of PWV, although it is part of a distinct subgroup of potyviruses related to PWV. The virus was therefore designated as South African passiflora virus (SAPV). The DNA containing the putative CP was cloned into the pUEX 2 bacterial expression vector and expressed inEscherichia coli as a β-gal-CP fusion protein. The fusion protein reacted with polyclonal antisera raised against the native virus, and antisera raised against partially purified fusion protein reacted with viral CP in Western blots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01309786
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Crystal field model for the resistivity minimum and its evolution with hydrogen concentration in PrH2+x (1990)
    Springer
    The European physical journal 80 (1990), S. 233-236 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The spin-disorder resistivity ρ m (T) of PrH2+x shows for the pure dihydride (x=0) a minimum in its temperature dependence above the magnetic ordering temperatureT N . This minimum can be explained qualitatively and quantitatively by a crystal-field effect if the ground state is ε1 =Γ 5 (a magnetic state) while the first excited state is ε2 =Γ 1 (a non-magnetic state). Forx=0.08, the magnetic ordering and the resistivity minimum tend to disappear which can be explained by the change of the crystalfield symmetry induced by the supplementary H-ions, leading to a splitting of the ground state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01357507
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  • 7
    Electronic Resource
    Electronic Resource
    Heavy metal and selenium levels in feathers of known-aged common terns (Sterna hirundo) (1994)
    Springer
    Archives of environmental contamination and toxicology 26 (1994), S. 351-355 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Concentrations of five metals and selenium in the breast feathers of known-aged common terns (Sterna hirundo) were examined at a breeding colony in Massachusetts, USA. Concentrations of selenium, chromium, and manganese increased significantly with age among adults (2–21 years old), whereas concentrations of mercury, cadmium, and lead did not. Concentrations of cadmium, selenium and manganese were lower in fledglings (20–23 days old) than in adults. Concentrations of mercury, however, were higher in fledglings than in adults, and concentrations of chromium were higher in fledglings than in young adults, probably reflecting higher exposure to these metals in the breeding area than in the winter quarters where the adults' feathers were grown. At least for mercury, excretion of metals into the feathers at each molt was an efficient protective mechanism, preventing continued accumulation in the body with increasing age.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203562
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  • 8
    Electronic Resource
    Electronic Resource
    Observation of the early stages of growth and the formation of growth spirals in epitaxial YBa2Cu3O7-δ thin films by AFM (1994)
    Springer
    Applied physics 59 (1994), S. 49-56 
    Details
    ISSN: 1432-0630
    Keywords: 68.55 ; 61.70 ; 74.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Ultrathin epitaxial films of YBa2Cu3O7−δ on SrTiO3 prepared by Direct Current (DC) sputtering and pulsed laser deposition were imaged by Atomic Force Microscopy (AFM) to follow the different stages of growth of the thin films. Series of films with thicknesses between 1.2 nm and 12 nm (1–10 monolayers of YBa2Cu3O7−δ) were prepared under identical conditions, optimized with respect to electrical and structural properties, to obtain information on the mechanisms responsible for the formation of growth spirals which are commonly observed in films having a thickness of several 10 nm or more. It could be shown that few layers are formed by a layered growth mode where material is attached laterally to 2D islands which are only one c-axis unit cell in height. In a later stage of growth when about 8–10 layers have been formed, the growth process changes to a mode which is mediated by growth spirals. This could be directly monitored in the AFM images where different defect structures like vertically sheared growth fronts and dendrite-like terraces of stacked islands as well as the resulting growth spirals could be identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00348419
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  • 9
    Electronic Resource
    Electronic Resource
    Foliar nutrient comparisons of pitch pine, loblolly pine, and the pitch × loblolly hybrid (1991)
    Springer
    Plant and soil 132 (1991), S. 1-9 
    Details
    ISSN: 1573-5036
    Keywords: foliar analysis ; nutrients ; Pinus rigida Mill. ; Pinus rigida × taeda ; Pinus taeda L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Foliar analysis was conducted to determine the differences between macronutrient concentrations and contents of current year's fascicles of loblolly pine (Pinus taeda L.), pitch pine (P. rigida Mill.), and first (F1) and second (F2) generation plantations of the pitch × loblolly hybrid (P. rigida × taeda). No significant differences in foliar P, K, Ca, and Mg concentrations were found between any of the species or hybrid families tested. Foliar N concentration differed among F1 families, but not among the F2 families. Foliar N concentrations of loblolly and pitch pine in the F1 plantation were not significantly different. Fascicles of pitch pine tended to be shorter and lighter than those of loblolly pine and the hybrids, and nutrient contents of pitch pine foliage tended to be slightly less. An assessment of site effects on tree growth and nitrogen nutrition in the F1 plantation revealed that the hybrids respond differently to an enriched site. Six of the eight species and hybrids had higher foliar N contents on the better quality site, while four had increased stem volumes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011006
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Locational differences in metal concentrations in feathers of Australasian gannet (Morus serrator) in New Zealand (1994)
    Springer
    Environmental monitoring and assessment 32 (1994), S. 47-57 
    Details
    ISSN: 1573-2959
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Levels of lead, cadmium, mercury, selenium, manganese and chromium were examined in breast feathers of Australasian Gannets (Morus serrator) from New Zealand waters, where they breed on coastal rocky stacks, islands, and occasionally coastal headlands. There were significant differences in the concentrations of all metals except mercury, with gannets from Ninety Mile Beach having significantly lower levels of all metals than those from the other beaches. Ninety Mile Beach is on the northern tip of the North Island, away from urbanization and industrialization, whereas the other beaches are closer to Auckland, the largest city in New Zealand. The levels of most metals were similar or lower than those reported for feathers from elsewhere around the world. Mercury, however, was at the high end, being exceeded only by raptors and gulls from industrialized countries. Several metal levels were highly correlated, indicating that gannets were usually exposed to several metals at once.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00548151
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