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  • 1
    Electronic Resource
    Electronic Resource
    Generation of acoustic surface waves on GaAs by photoexcitation (1982)
    Springer
    Applied physics 28 (1982), S. 211-214 
    Details
    ISSN: 1432-0630
    Keywords: 78.35 ; 68.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In the experiments reported here we observed the generation of non-thermal, large amplitude acoustic surface waves at GHz frequencies on the surface of a GaAs crystal under intense illumination with 514.5 nm radiation from an Ar+ laser at room temperature. The acoustic surface waves were detected by optical Brillouin spectroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00618696
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  • 2
    Electronic Resource
    Electronic Resource
    Variance comparison as a tool in clinical pharmacology: An example with two loop diuretics (1982)
    Springer
    European journal of clinical pharmacology 23 (1982), S. 221-224 
    Details
    ISSN: 1432-1041
    Keywords: frusemide ; piretanide ; variance comparison ; regularity of effect ; activity comparison ; drug excretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Comparison of variances can be useful in assessing the regularity of drug effects. In order to compare the variances of the saluretic effects of piretanide and frusemide, two loop diuretics with different bioavailabilities, a double-blind cross-over study was carried out in 34 normal volunteers. The diuretics were given in randomized order, with an interval of 7 days, in single equipotent doses (frusemide 6.25 mg and piretanide 1.0 mg chosen from previous results) adjusted by body weight. The dispersion of individual values (comparison of variances from paired measures) for Na+, Cl− and Ca++ excretion, urine osmolality and excretion of the drugs, was significantly smaller for piretanide than for frusemide. It is concluded that the saluretic effect of a single dose of piretanide varies less than that of an equipotent dose of frusemide. The methodology may be useful in trials of drugs for which regularity of effect is important.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00547557
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  • 3
    Electronic Resource
    Electronic Resource
    The identification of the sulfide NaCrS2 in nickel-base superalloys during corrosion in sulfate melts (1982)
    Springer
    Oxidation of metals 18 (1982), S. 187-194 
    Details
    ISSN: 1573-4889
    Keywords: Sulfide NaCrS2 ; basic fluxing ; nickel-base superalloy ; Na2SO4 melt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The sulfide NaCrS2 has been identified in the internal corrosion zone of several nickel-base superalloys under basic fluxing conditions at very negative potentials in a 90% Na2SO4-10% K2SO4 melt at 1173 K. It can also be formed in the presence of carbon-contaminated sulfate. NaCrS2 can dissolve some Ti, Al, Ni, and Co; other elements, e.g., K, Mo, W, Nb, Ta, and Zr, could not be detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00662037
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  • 4
    Electronic Resource
    Electronic Resource
    The influence of electrode potential on the corrosion of gas turbine alloys in sulfate melts (1982)
    Springer
    Oxidation of metals 18 (1982), S. 195-223 
    Details
    ISSN: 1573-4889
    Keywords: Acidic and basic fluxing ; hot corrosion ; sulfate melts, super alloys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The influence of the electrode potential on the corrosion behavior of a series of nickel- and cobalt-base gas turbine alloys has been investigated in a (mole %) 53Na2SO4+7CaSO4+40MgSO4 melt at 1073 and 1173 K and in a 90Na2SO4+10K2SO4 melt at 1173 K. Only acidic fluxing is observed in the (Na 2,Ca, Mg)SO4 melt at positive potentials while a protective scale rich in MgO is formed on all alloys at negative potentials. This scale prevents basic fluxing because MgO is insoluble in neutral and basic melts. The breakthrough potential for acidic fluxing is a function of the material composition. Increasing chromium content of the alloys extends the potential range of protective film formation. Acidic and basic fluxing are observed in the (Na, K)2SO4 melt. Acidic fluxing occurs at positive and basic fluxing at negative potentials. A protective scale is formed in an intermediate (neutral) potential range on the high-chromium alloys IN-597 and IN-738 LC. Here, too, the breakthrough potentials for acidic and basic fluxing are influenced by the composition of the alloys.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00662038
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  • 5
    Electronic Resource
    Electronic Resource
    Mössbauer and high field magnetization studies of the solid solution CoFexAl2-xO4 (1982)
    Springer
    Physics and chemistry of minerals 8 (1982), S. 206-211 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract By means of paramagnetic Mössbauer spectra the cation distribution of the solid solution CoFe x Al2−x O4 with 0≦x≦1.5 has been determined. The existence of high field magnetic susceptibility at low temperature for samples with x≧0.4 has been interpreted in terms of non-collinear ferrimagnetic arrangements. Below the Neel temperature the spinel CoAl2O4 has a complex antiferromagnetic behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00309479
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  • 6
    Electronic Resource
    Electronic Resource
    Are the funnel-canal organs the “campaniform sensilla” of the shore crab Carcinus maenas (Crustacea, Decapoda)? (1984)
    Springer
    Zoomorphology 104 (1984), S. 11-20 
    Details
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The topography of the funnel-canal organs of Carcinus maenas (Decapoda, Crustacea) and their stimulus-receiving cuticular and sensory apparatus were studied in the light and electron microscopes. About 4000 funnel-canal organs are situated within the exoskeleton of Carcinus. Almost all of them are on the distal segments of the walking legs, in particular on the epicuticular cap at the tip of the dactyl. They were not found to be arranged in groups or sensilla fields, and no sex-specific differences were observed. Characteristic features of the funnel-canal organs are as follows: (a) There is a terminal pore (0.5×0.8 μm diameter) in the cuticle, at the tip of a small projection. It is closed by a plug of electron-dense material. (b) The terminal sections of the dendrites are enclosed in a dendritic sheath up to ca. 10 μm below the pore. (c) The dendrites, 3–24 in number, end below the plug; none of the dendrites exhibits a tubular body; two of the dendrites are distinguished from the others by the greater number of microtubules in their outer segments. The structural characteristics, in particular the “gustatory pore” and the number of dendrites, are typical of bimodal receptors in arthropods. In such receptors, as in the contact chemoreceptors of insects and arachnids, mechano-and chemosensitive sensory cells are combined. This interpretation of the function of the funnel-canal organs is supported by electrophysiological data of other authors. The morphological parameters we find for the funnelcanal organs, in comparison with those of insect campaniform sensilla, provide clear evidence against the reclassification of the funnel-canal organs as “crustacean campaniform organs” proposed by Shelton and Laverack (1968).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312166
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  • 7
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1960)
    Springer
    Theoretical and applied genetics 30 (1960), S. 258-264 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00713411
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  • 8
    Electronic Resource
    Electronic Resource
    Technicolor unification without catastrophe? (1983)
    Springer
    The European physical journal 16 (1983), S. 347-352 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The extended technicolor modelSU(8) ⊃SU(5)×SU(3) c ×U(1)⊃SU TC(3)×SU w(2)×SU c(3) ×U(1) with fermion representations containing three quark lepton families attracts attention because of its unique technicolor coupling: it increases in the infrared circumventing a no-go theorem and further-more stays big over the whole technicolor range. Hence an enhancement of fermion and pseudogoldstone masses proposed by Holdom might happen, allowing for a large sideways scale. A scalar field in the 1015 GeV range introduced in order to break an exact global flavour symmetry of the model is argued to influence strongly the vacuum alignment in the technicolor sector. It permits an explanation of the quark lepton mass pattern even with-out a detailed fit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01577104
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  • 9
    Electronic Resource
    Electronic Resource
    The baryon spectrum in low order QCD with Migdal regularization (1980)
    Springer
    The European physical journal 6 (1980), S. 85-91 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The 2-point functions of local gauge invariant baryonic operators in QCD are continued from the Euclidean to the hadronic region using the Migdal regularization procedure to orders α s . The knowledge of the anomalous dimensions of baryonic operators allows to derive the mass spectrum of the leading δ- and of the first twoN-resonances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01427926
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  • 10
    Electronic Resource
    Electronic Resource
    Proton decay induced by instantons inSU(5) grand unification (1984)
    Springer
    The European physical journal 25 (1984), S. 45-48 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Instantons infinitesimally turned out of theSU c (3) subspace of spontaneously brokenSU(5) gauge theory induce a baryon number violating interaction proportional 1/μ X 2 like heavy vector boson exchange, but with a different tensor structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01571955
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