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  • 1990-1994  (7)
  • 1980-1984  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Two-photon photoeffect from resonant silver structures (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 1066-1068 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report the two-photon photoelectric sensitivities of a granular silver film and a silver covered diffraction grating at the photon energy (h-dash-bar)ω=3.5 eV of a frequency-tripled Nd:YAG laser when surface plasmons are excited. Values higher than 3×10−15 A cm2 W−2 have been obtained with both structures which correspond to a one-photon quantum yield of 1×10−5 under a 1-GW-cm−2 incident laser power density. These photoemitters could be used as high current density electron sources by illuminating them with picosecond or subpicosecond lasers in the 2–4-eV spectral range.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349698
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Silver-covered diffraction gratings as possible high-efficiency laser driven photoemitters (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 1230-1232 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We propose to use silver-covered optical diffraction gratings as possible laser-driven electron sources. Such structures allow surface plasma waves excitation and consequently an enhancement of the photoemission sensitivity. The latter can easily be tuned with the wavelength of the excitation laser by varying the incidence angle. Using a commercial diffraction grating, we obtained after a cesium activation, a quantum yield higher than 1% at the wavelength of a frequency tripled YAG laser (λ=355 nm) for the incidence angle corresponding to the plasmon resonance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104371
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Pulsating flow of a plastic fluid (1982)
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 843-844 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This fluid does not deform below a certain yield shear stress Ty; above this yield shear stress it flows like a newtonian fluid (with constant viscosity) and is thus not shear-thinning in the normal sense. However, a power analysis shows that the extra power required to pulsate the flow is greater ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/296843a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Fiber Contents of Selected Raw and Processed Vegetables, Fruits and Fruit Juices as Served (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), 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: Pectin and neutral detergent fiber (NDF) contents were investigated for commercially processed foods as served: 10 vegetables, 10 fruits, and 8 fruit juices. Fiber content of fruits ranged from 0.7%−4.5% NDF and 0.28%−0.48% pectin; juices ranged from 0.1%−0.22% NDF and 0.2%−0.39% pectin. Fiber in frozen, canned and cooked vegetables ranged from 1%−4.4% NDF and 0.5%−1% pectin. In general, there is no evidence that any of the food preparation methods was superior. There appears to be no great loss of fiber when food is prepared by typical home methods or commercial processing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1983.tb10798.x
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Nutrient Composition of Historical Canned Food Samples (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), 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: Several historical food samples were analyzed for nutrient and mineral composition. The samples included a 40-yr old can of sweet corn, relish found aboard the sunken U.S.S. Monitor and seven samples recovered from the sunken steamboat Bertrand. The nutrient content of the canned corn compared favorably with reported values, with the exception of lower amounts of ascorbic acid. Significant levels of riboflavin, niacin, carotene and protein were found in the pickle relish. The samples recovered from the Bertrand contained calcium levels comparable to today's products, but the sodium levels were higher and potassium levels were lower.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1983.tb10815.x
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The unique minimal clone with three essentially binary operations (1990)
    Springer
    Algebra universalis 27 (1990), S. 261-269 
    Details
    ISSN: 1420-8911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01182459
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Dedekind's numbers characterize distributive lattices (1991)
    Springer
    Algebra universalis 28 (1991), S. 36-39 
    Details
    ISSN: 1420-8911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190409
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Idempotent algebras with log-linear free spectra (1991)
    Springer
    Algebra universalis 28 (1991), S. 119-127 
    Details
    ISSN: 1420-8911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper we consider idempotent algebras whosep n -sequences (the sequences of the numbersp n of essentiallyn-ary polynomials) have a subexponential rate of growth. Studying the symmetry groups of polynomials we establish some consequences of this property. In particular, a new characterization of semilattices is obtained, and all idempotent commutative algebras with log-linear free spectra are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190415
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    The minimal extension of the sequence 〈, 0, 0,3〉 (1992)
    Springer
    Algebra universalis 29 (1992), S. 419-436 
    Details
    ISSN: 1420-8911
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The main theorem proved in this paper is that the sequence ∮, 0, 3 has the unique minimal extension to the sequence ∮, 0, 3,..., 2n -1,... and that any algebra having this as itsp n -sequence is equivalent to an algebra in one of two explicitly described equational classes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01212441
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  • 10
    Electronic Resource
    Electronic Resource
    Systematically too low values of the cranking model collective inertia parameters (1980)
    Springer
    The European physical journal 294 (1980), S. 341-350 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Deformed Nilsson and Woods-Saxon potentials were employed for generating single particle states used henceforth for calculating the inertia tensor (cranking model and monopole pairing) and the collective energy surfaces (Strutinsky method). The deformation was parametrized in terms of quadrupole and hexadecapole degrees of freedom. The classical energy expression obtained from the inertia tensor and energy surfaces was quantized and the resulting stationary Schrödinger equation was solved using the approximate method. The secondI π=0 2 + collective level energies were calculated for the Rare Earth and Actinide nuclei and the results compared with the experimental data. The vibrational level energies agree with the experimental ones much better for spherical nuclei for both single particle potentials; the discrepancies for deformed nuclei overestimate the experimental results by roughly a factor of two. It is argued that coupling of the axially symmetric quadrupole degrees of freedom to non-axial and hexadecapole ones does not affect the conclusions about systematically too low mass parameter values. The alternative explanation of the systematic deviations from the 0 2 + level energies could be a systematically too high stiffness of the energy surfaces obtained with the Strutinsky method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434142
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    Paper (German National Licenses)
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