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  • 1
    Electronic Resource
    Electronic Resource
    SL(3,R) as the group of symmetry transformations for all one-dimensional linear systems. III. Equivalent Lagrangian formalisms (1992)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 33 (1992), S. 1571-1578 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The SL(3,R) theory of projective transformations of the plane is applied to the Lagrangians of all one-dimensional Newtonian linear systems. Noether and non-Noether equivalent Lagrangians, as well as the associated Noether and non-Noether constants of motion, are thus obtained in a completely general and systematic way. Complete unification is achieved by this group-theoretic approach to Lagrangians of one-dimensional linear systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.529681
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  • 2
    Electronic Resource
    Electronic Resource
    Heavy ions activation analysis: Theoretical approach for optimizing cyclic analyses
    Amsterdam : Elsevier
    Nuclear Inst. and Methods in Physics Research, B 10-11 (1985), S. 1062-1064 
    Details
    ISSN: 0168-583X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0168-583X(85)90171-5
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  • 3
    Electronic Resource
    Electronic Resource
    ^2^4Na and ^9^9^mTc tracers applied to the characterization of liquid-solid fluidized bed and hydraulic transport reactors
    Amsterdam : Elsevier
    The @International Journal Of Applied Radiation And Isotopes 34 (1983), S. 1465-1468 
    Details
    ISSN: 0020-708X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0020-708X(83)90048-0
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  • 4
    Electronic Resource
    Electronic Resource
    The growth curve of animals
    Amsterdam : Elsevier
    Agricultural Systems 10 (1983), S. 133-147 
    Details
    ISSN: 0308-521X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0308-521X(83)90066-5
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  • 5
    Electronic Resource
    Electronic Resource
    Rapid trace determination of radiostrontium in milk and drinking water (1989)
    Springer
    Journal of radioanalytical and nuclear chemistry 134 (1989), S. 87-95 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A rapid method for determining traces of radiostrontium in milk and drinking water is described. The technique involves a batch treatment of the milk sample with a cation exchanger (DOWEX 50W X8) followed by a solvent extraction with a crown ether (DC18C6) and a precipitation of SrCO3. In the case of water, the strontium is extracted directly with the crown ether. The average separation yield is 74% for milk and 91% for water. The overall separation procedure takes about 8 hours. Activities as low as 0.03 Bq/1 can be determined with a low background GM-counter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02047273
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  • 6
    Electronic Resource
    Electronic Resource
    Studies in heavy ion activation analysis trace determination possibilities with9Be bombardment (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 116 (1987), S. 401-408 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 9Be induced radioactivation was used to study the trace determination of 19 elements at 3 different ion beam energies (Elab=14, 32 and 63 MeV9Be2+). Nine nuclear reactions, yielding radionuclides with half-lives longer than 2.5 m, present potential analytical features. Beside the very sensitive detection of B and N, the multielemental determination of Na, Si, Ca, Sc, and Zn is possible with a9Be ion beam of appropriate incident energy. Nuclear interferences have also been investigated and quantified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035784
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  • 7
    Electronic Resource
    Electronic Resource
    Studies in heavy ion activation analysis (1988)
    Springer
    Journal of radioanalytical and nuclear chemistry 120 (1988), S. 253-265 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 11B induced radioactivation was used to study the trace determination of light elements with 1≤Z≤17. 49 nuclear reactions were investigated with ion beam energies ranging from Elab=10 MeV to Elab=27 MeV. Five elements were found to be determinable nondestructively, selectively and sensitively: Li, Be, B, Mg and Si. Nuclear interferences have also been defined and quantified. The technique has been applied to simultaneous Li-B trace determinations in glass samples and to Mg determination in Al2O3 ceramic material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037340
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  • 8
    Electronic Resource
    Electronic Resource
    Lithium and beryllium trace determination using heavy-ion activation analysis (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 112 (1987), S. 403-413 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A novel procedure for measuring the concentrations of lithium and beryllium in different inorganic and biological samples has been studied using18O heavy-ion activation analysis. The specific reactions,7Li(18O,αn)2cF and9Be(180,2α)19O, are sensitive and selective if the bombardment energy is 25-MeV18O4+. The detection limits for non-destructive analyses are 10 ng Li and 2 ng Be for a 100-second cyclic irradiation. The technique has been tested by analyzing NBS reference materials. It can be applied to a large range of solid samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02132373
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  • 9
    Electronic Resource
    Electronic Resource
    Studies in heavy ion activation analysis (1985)
    Springer
    Journal of radioanalytical and nuclear chemistry 88 (1985), S. 369-377 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 7Li induced radioactivation was used for the trace determination of hydrogen via the1H(7Li, n)7 Be reaction. At 21 MeV7Li, only boron and magnesium present small nuclear interferences. An activation curve has been established by bombarding a stack of thin mylar foils. The comparison of this curve with the excitation function for the forward reaction, namely7Li(p, n)7 Be, shows that the recoil range from the superficial hydrogen atoms is only 1.7 mg·cm−2, allowing post-irradiation etching. Hydrogen has been determined in titanium and lead bronze at the 100 ppm level with a relative precision of 6 to 10%. Studies of 32 potential interfering elements suggest the extension of Li activation to the trace determination of Na[23Na(7Li,6Li)24Na] and K[39K(7Li, d)44m,44Sc].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037013
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  • 10
    Electronic Resource
    Electronic Resource
    Studies in heavy ion activation analysis (1985)
    Springer
    Journal of radioanalytical and nuclear chemistry 90 (1985), S. 341-348 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 10B induced radioactivation was used for the trace determination of hydrogen via the1H(10B α)7Be reaction. At 27 MeV10B++, only boron and magnesium present small nuclear interferences. An activation curve has been established by bombarding stacks of thin mylar foils. The comparison of this curve with the excitation function for the forward reaction, namely10B(p, α)7Be, shows that the recoil range from superficial hydrogen atoms is small. Hydrogen has been determined in titanium and lead bronze at the 100 ppm level. Studies of 21 potential interfering elements suggest that10B activation might be suitable for the trace determination of lithium [6Li(10b,n)15O and7Li(10B, 2n)15O] and oxygen [18O(10B,α)24Na].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02060790
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