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  • 1
    Electronic Resource
    Electronic Resource
    Effects of Cooking on Levels of PCBs in the Fillets of Winter Flounder (1998)
    Springer
    Bulletin of environmental contamination and toxicology 60 (1998), S. 845-851 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900704
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  • 2
    Electronic Resource
    Electronic Resource
    Differentiation of Mediterranean plum pox virus isolates by coat protein analysis (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 43 (1994), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Six isolates of plum pox potyvirus from different Mediterranean countries were compared by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE), peptide mapping and Western blotting after improved purification of virions using a protease inhibitor cocktail that reduced coat protein degradation. One isolate (Spanish isolate 3.3 from plum) differed from the others in possessing a smaller coat protein (approximately 34 instead 36 kDa) with a possible deletion in the surface-exposed amino-terminal region. Infectivity of the viruses after proteolysis, assessed using a local lesion host, was significantly reduced. Protease digestion conditions were established to generate a 28 kDa resistant core of the viral coat protein. Such conditions (longer incubation times or an increase in the enzyme concentration) differed from the milder ones reported for other potyviruses. Implications of the results in relation to the production and screening of virus-specific monoclonal antibodies are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1994.tb00566.x
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  • 3
    Electronic Resource
    Electronic Resource
    Morphological factors determining salt tolerance in citrus seedlings: the shoot to root ratio modulates passive root uptake of chloride ions and their accumulation in leaves (1999)
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 22 (1999), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The results presented in this work were obtained with two citrus genotypes, the chloride-tolerant Cleopatra mandarin (Citrus reshni Hort. ex Tan.) and the chloride-sensitive Carrizo citrange [Citrus sinensis (L.) Osb. ×Poncirus trifoliata (L.) Raf.]. The data show that chloride uptake under salinization is driven by passive forces. In both species, net rates of chloride root uptake increased linearly, without saturation, with the increase of external NaCl concentrations (30–240 mol m–3). Uptake rates, on a μg g root dry weight–1 h–1 basis, in Cleopatra and Carrizo decreased (from 38 to 21) and increased (from 21 to 35), respectively, with the increase (about three-fold) of the shoot to root ratio. With the appropriate shoot to root ratio in each genotype, it was demonstrated that at identical external doses of NaCl, Cl– uptake rates and Cl– xylem concentrations in the two species were very similar. Root pruning and defoliation showed that the amount of chloride taken by the plant was a function of the size of the root system, whereas leaf chloride concentration, the parameter responsible for salt damage, was dependent upon leaf biomass. Measurements of water transpiration suggested that chloride root uptake and leaf accumulation might be linked to water absorption and transpiration rates, respectively. The data indicate that plant morphology is a crucial factor determining salt-tolerance in citrus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3040.1999.00495.x
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of iron impurities in yttrium-partially stabilized Zirconia
    Amsterdam : Elsevier
    Solid State Ionics 26 (1988), S. 175 
    Details
    ISSN: 0167-2738
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-2738(88)90181-6
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  • 5
    Electronic Resource
    Electronic Resource
    CYCLIC FATIGUE OF Al2O3 AND Al2O3-Al2TiO5 COMPOSITES IN DIRECT PUSH-PULL (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 20 (1997), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— A reaction sintering route is developed to produce, “in situ”, composites of alumina-aluminium titanate using alumina and titania as starting powders. Aluminium titanate, can be formed by a solid state reaction between Al2O3 and TiO2 at temperatures above the eutectoid temperature of 1280°C. These composites have different grain sizes of alumina matrix and a different quantity and distribution of aluminium titanate according to the heating cycle used.In the present work direct push-pull tests under cyclic loads have been carried out with both monolithic alumina and alumina-aluminium titanate composites. It has been found that all the samples show a decrease in tensile strength with the number of applied cycles of loading when plotted in graphical form but the slopes of these graphs for both Al2O3-Al2TiO5 composites are lower than for the alumina specimens. The role of aluminium titanate and the alumina matrix grain size in fatigue crack growth resistance has been studied during push-pull tests, where failure occurs by catastrophic propagation of small surface cracks after a very short regime of subcritical crack growth. These results have been compared with measurements of slow stable fatigue crack growth rates in Al2O3-Al2TiO5 composites carried out elsewhere with pre-notched specimens of the compact tension type. These latter tests provide information about the behaviour of significantly long cracks, i.e. cracks that are several millimetres long.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.1997.tb00308.x
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  • 6
    Electronic Resource
    Electronic Resource
    Physiological and anatomical disturbances induced by chloride salts in sensitive and tolerant citrus: beneficial and detrimental effects of cations (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 21 (1998), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In citrus, the relative contributions of chloride and cations to growth disturbances induced by salinity are a matter of controversy. Chloride salts (15 mol m–3 CaCl2, 30 mol m–3 CaCl and 30 mol m–3 KCl) reduced growth and gas exchange parameters, increased leaf damage and abscission and produced anatomical disarrangements and mineral imbalances in seedlings of sensitive Carrizo citrange (Citrus sinensis x Poncirus trifoliata) and tolerant Cleopatra mandarin (Citrus reshni). In both cultivars, Ca2+ was more beneficial, and K+ more detrimental, for growth than sodium. Photosynthesis and growth disturbances were highly correlated (P≤ 0·001) with leaf Cl– build-up. In the sensitive genotype, Cl– was also significantly correlated with several leaf anatomical disarrangements, such as increase in succulence. In comparison with sodium, both calcium and potassium increased leaf Cl– content (up to 25 and 69%, respectively). Protective calcium effects were not linked to improvement of photosynthesis, reduction of leaf anatomical disarrangements, or prevention of Cl– and Na+ increases. It is proposed that the ameliorative effects of calcium on citrus grown under salinity are mostly related to reduction of leaf abscission. Collectively, the data suggest a cause–effect relationship between Cl– build-up and reduced growth, whereas chloride correlations with declines in photosynthesis or increases in succulence appear to be indirect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3040.1998.00349.x
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  • 7
    Electronic Resource
    Electronic Resource
    Improved high-temperature mechanical properties of zirconia-doped mullite (1990)
    Springer
    Journal of materials science 9 (1990), S. 1400-1402 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00721596
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  • 8
    Electronic Resource
    Electronic Resource
    In vitro formation of hydroxylapatite layer in a MgO-containing glass (1994)
    Springer
    Journal of materials science 5 (1994), S. 529-532 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: In the present article, the behaviour of a biologically active glass (BAG) belonging to the system SiO2−CaO−MgO−Na2O−K2O−P2O5, soaked in simulated body fluids (SBFs), is studied. The amount of Ca, Mg and K leached from the glass, as well as variations in P concentration and pH of the solution were measured versus time. The formation of a hydroxylapatite (HA) layer on the glass surface was determined by XRD and SEM-EDX. The article reports the influence of pH variation of the medium on the crystallinity of the HA formed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00124885
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  • 9
    Electronic Resource
    Electronic Resource
    Multicomponent toughened ceramic materials obtained by reaction sintering (1985)
    Springer
    Journal of materials science 20 (1985), S. 2711-2718 
    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 Very dense zirconia-toughened ceramics with a mullite matrix based on the quaternary system ZrO2-Al2O3-SiO2-TiO2 in the temperature range 1450 to 1550° C have been obtained by reaction sintering of zircon/alumina/titania mixtures. The reaction mechanism, advance of reaction, microstructure and mechanical properties of different compositions are reported. The results are explained in terms of a transitory liquid phase that appears at ~ 1400° C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553032
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  • 10
    Electronic Resource
    Electronic Resource
    Multicomponent toughened ceramic materials obtained by reaction sintering (1985)
    Springer
    Journal of materials science 20 (1985), S. 2702-2710 
    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 Very dense zirconia-toughened ceramics with a mullite matrix based on the quaternary system ZrO2-Al2O3-SiO2-MgO in the temperature range as low as 1450 to 1500° C have been obtained by reaction sintering of zircon/alumina/magnesia mixtures. The shrinkage, advance of reaction, microstructure, densification mechanism and mechanical properties are reported. The results are explained in terms of transitory and permanent liquids that appear at ≤1425° C and ~ 1450° C respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553031
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