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  • 1980-1984  (16)
  • 1920-1924
  • 1910-1914
  • 1880-1889
  • 1984  (9)
  • 1983  (7)
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  • 1980-1984  (16)
  • 1920-1924
  • 1910-1914
  • 1880-1889
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Effects of Harvesting, Transportation, and Cryogenic Processing on the Microflora of Southern Peas (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 49 (1984), 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: Samples of southern peas [Vigna unguiculata (L.) Walp., cv. Purple Hull Pinkeye] were obtained at critical stages in a normal harvesting, transportation, and cryogenic processing operation and microbiologically analyzed for total plate count (TPC), Enterobacteriaceae count (ENT), and yeast and mold counts. Molds were identified to genera while ENT were identified to species. Operations involving extended holding times tended to increase all counts significantly, although subsequent processing reduced these counts to an acceptable level. Predominant genera of ENT and molds appeared to be soil borne organisms such as Enterobacter agglomerans, Enterobacter cloacae, Klebsella pneumoniae, and Serratia liquefaciens, and Fusarium, Cladisporium, Alternaria, Phoma, and Aspergillus, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1984.tb12809.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Diffusion Properties of Salt and Acetic Acid into Herring and Their Subsequent Effect on the Muscle Tissue (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 49 (1984), 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: The diffusion of sodium chloride and acetic acid into herring muscle and their subsequent effects on the myotibrillar proteins were studied at different temperatures and fish:cure ratios. Acid was found to penetrate tissue more quickly than salt. The acid and salt cause an initial “hardening” of the tissue, the extent of which is proportional to the concentration of each, but it is considered that the resultant fall in pH activates muscle cathepsins. SDS PAGE indicated that proteolysis of the myosin heavy chains was concomitant with subsequent tissue softening. Electron microscopy detected little disintegration of myofilaments, but extensive break-up of Z-lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1984.tb13194.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Kinetics of Product Formation and Plasmid Segregation in Recombinant Microbial Populations (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 413 (1983), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1983.tb47879.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Infrared spectropolarimetry of Seyfert galaxy NGC1068 (1984)
    [s.l.] : Nature Publishing Group
    Nature 310 (1984), S. 660-662 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The observations were made on 20 August 1983 at the //36 chopping secondary focus of the 3.9-m Anglo-Australian Telescope (A-AT) and on 13 December on the 3.0 m Infrared Telescope Facility (IRTF) in Hawaii. The UCL (University College, London) grating spectrometer was modified for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/310660a0
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Generation of thermal strains in GRP (1983)
    Springer
    Journal of materials science 18 (1983), S. 1533-1539 
    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 The temperature dependence of the thermal strains in the longitudinal direction of the transverse ply ε tl th , of 0°/90°/0° epoxy and polyester laminates, has been determined from the thermal variation of the deflection of an unbalanced beam. These results have been compared with those predicted from known values of the linear expansion coefficients,α t andα l. There is good agreement between the experimental and calculated values of thermal strain for the epoxy composite. Good agreement for the polyester laminates can only be obtained when the values ofα t used are those for wet laminates. The large thermal strains previously reported for the polyester laminates can therefore be explained by small quantities of water in the matrix which are not readily removed during post-curing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01111974
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  • 6
    Electronic Resource
    Electronic Resource
    Generation of thermal strains in GRP (1983)
    Springer
    Journal of materials science 18 (1983), S. 1522-1532 
    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 The temperature dependence of the linear expansion coefficients in the longitudinal (α l) and transverse directions $$(\alpha _{t_1 } and \alpha _{t_2 } )$$ of unidirectional glass fibre laminates and their matrix resins (α m) has been studied. The results for the dry, fully post-cured polyester, epoxy resins and laminates have been found to be consistent with the predictions of the Schapery equations. An anomalous moisture phenomenon, in the form of a peak in theα m (T)/T andα t (T)/Tcurves for the polyester resin and laminates has been observed. A difference between $$\alpha _{t_1 }$$ and $$\alpha _{t_2 }$$ has been observed for partially cured polyester laminates, which is also perturbated in the presence of water. Both these moisture effects, which are not found in the epoxy specimens, are considered to result from a two-phase polyester matrix and the latter to continued curing below the softening point of the resin. These results have a considerable consequence on the magnitude of the thermal strains which develop in polyester composites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01111973
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    On the factors affecting strength of portland cement (1984)
    Springer
    Journal of materials science 19 (1984), S. 150-158 
    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 This paper reports mechanical property measurements for Portland Cement paste free from fabrication artifacts (e.g. bubble-type voids), and compares them to published results both for normal and new high strength cement. Removal of large voids (above 100μm) by vacuum de-airing leads to an increase of ∼ 15% in mean flexural strength and a small decrease in fracture toughness. This increase in flexural strength is predictable from the tied-crack model previously proposed to explain the notch-sensitivity behaviour of hardened cement paste, and for which direct experimental evidence was obtained. It is suggested that factors such as moisture content are at least as important as large voids in controlling mechanical properties. It is concluded that the much increased strength of the new polymer-containing cements must result from improvements to the microstructure other than the simple elimination of voids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553004
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  • 8
    Electronic Resource
    Electronic Resource
    On the factors affecting strength of portland cement (1984)
    Springer
    Journal of materials science 19 (1984), S. 150-158 
    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 This paper reports mechanical property measurements for Portland Cement paste free from fabrication artifacts (e.g. bubble-type voids), and compares them to published results both for normal and new high strength cement. Removal of large voids (above 100μm) by vacuum de-airing leads to an increase of ∼ 15% in mean flexural strength and a small decrease in fracture toughness. This increase in flexural strength is predictable from the tied-crack model previously proposed to explain the notch-sensitivity behaviour of hardened cement paste, and for which direct experimental evidence was obtained. It is suggested that factors such as moisture content are at least as important as large voids in controlling mechanical properties. It is concluded that the much increased strength of the new polymer-containing cements must result from improvements to the microstructure other than the simple elimination of voids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02403121
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Microstructural studies of the hydration products of three tricalcium silicate polymorphs (1983)
    Springer
    Journal of materials science 18 (1983), S. 3686-3694 
    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 Tricalcium silicate (C3S), the major phase of Ordinary Portland Cement (OPC), occurs in several polymorphic forms depending on the amounts and types of impurity ions present. The hydration products of triclinic, trigonal and monoclinic C3S samples have been studied for a comparison with the silicate hydration products of OPC, using TEM and SEM. In the early stages, less than one day, there are distinct differences observed between the products on the surfaces of grains of different crystal structure but later all three appear similar. This suggests a common mechanism of hydration at later times, irrespective of structure, but the influence of the foreign ions in the first few hours is significant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00540741
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    The microstructure of the hydration products of tri-calcium aluminate in the presence of gypsum (1983)
    Springer
    Journal of materials science 18 (1983), S. 402-410 
    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 The hydration of tri-calcium aluminate in the presence of gypsum has been examined by electron optical methods as a function of pH and hydration time. The location of the alumino-sulphate phase has been related to the solubility of aluminate ions from the precursive platelet phase. At pH ∼ 11.5 the alumino-sulphate precipitate is crystalline and precipitates from solution. When first formed it is deficient in calcium and sulphate with respect to ettringite. If the deficiency is too great, transformation to calcium aluminate monosulphate hydrate may occur as an intermediate step before the equilibrium phases are obtained. At a higher pH (∼ 12.5) the fibres of alumino-sulphate are smaller and more rounded. Long tubular fibres similar to those seen in portland cement were not observed. This has been explained as a consequence of using pure tricalcium aluminate, rather than alkali-containing material. The information obtained has been used to predict the effect of some inorganic additives on the phases produced during the setting of portland cement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00560628
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