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  • 1
    Electronic Resource
    Electronic Resource
    Leguminous Trees for the Rehabilitation of Sodic Wasteland in Northern India (1999)
    Boston, MA, USA : Blackwell Science Inc
    Restoration ecology 7 (1999), S. 0 
    Details
    ISSN: 1526-100X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The study objective was to determine the fuelwood harvesting rotation and magnitude of nutrient accumulation by the sodic tolerant species Dalbergia sissoo and Prosopis juliflora for the rehabilitation of sodic wastelands. Mean annual increment and current annual increment growth of these trees reached a peak in six-year-old stands. Leaves dominated the litter of these species and contained high concentrations of most nutrients. N, Ca, Mg, and Fe were present in larger concentrations than other nutrients. Organic carbon additions at harvest after six years averaged 16 Mg ha−1, while soil pH was reduced from 9.8 to 8.6. Exchangeable sodium percentage (ESP) values decreased 65 and 29% under P. juliflora and D. sissoo, respectively, after harvest. These tree species produced significant root spread and deep penetration and were able to rehabilitate sodic soil effectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1526-100X.1999.72021.x
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  • 2
    Electronic Resource
    Electronic Resource
    Mössbauer electric-field gradient study in FeS2 (marcasite) (1978)
    Springer
    Applied physics 16 (1978), S. 175-178 
    Details
    ISSN: 1432-0630
    Keywords: 76
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Mössbauer absorption of Fe57 in synthetically grown crystals of FeS2 (marcasite) has been studied in ab and bc planes as a function of orientation of the crystal axes with respect to the unpolarised γ-ray beam. The analysis of peak intensity area ratios of the quadrupole split spectra yields the principal axis values, the asymmetry parameter, and the direction cosines of the efg with respect to the crystal axes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00930383
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  • 3
    Electronic Resource
    Electronic Resource
    Histopathology of kidney of albino rat poisoned with uranyl nitrate (1980)
    Springer
    Bulletin of environmental contamination and toxicology 24 (1980), S. 9-12 
    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/BF01608067
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  • 4
    Electronic Resource
    Electronic Resource
    Histopathological alterations induced by uranyl nitrate in the liver of albino rat (1979)
    Springer
    Bulletin of environmental contamination and toxicology 22 (1979), S. 785-790 
    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/BF02027025
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  • 5
    Electronic Resource
    Electronic Resource
    Salt stress affects in vitro growth and in situ symbioses of ectomycorrhizal fungi (1993)
    Springer
    Mycorrhiza 3 (1993), S. 63-68 
    Details
    ISSN: 1432-1890
    Keywords: Pisolithus tinctorius ; Laccaria laccata ; Cenococcum geophilum ; Thelephora terrestris ; Salt stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Ten isolates of six species of ectomycorrhizal fungi were grown in vitro at nine concentrations of three sodium salts (NaCl, Na2SO4, Na3C6H5O7) for 4 weeks. Colony diamater, biomass and protein content of fungi were evaluated. Isolates of Pisolithus tinctorius and Suillus luteus were more tolerant of NaCl and Na2SO4 than of Na3C6H5O7. Fungi in the genera Cenococcum, Laccaria, and Thelephora were highly intolerant of Na3C6H5O7 and Na2SO4 in vitro. Biomass and protein content of fungi generally declined with increasing substrate salinity in solution culture. In situ ectomycorrhizal colonization by Laccara laccata and P. tinctorius and the dry weight of Pinus taeda seedlings were significantly reduced by 80 mM NaCl after 14 weeks. Only select ectomycorrhizal fungi appear capable of growth and symbiosis in saline soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00210694
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  • 6
    Electronic Resource
    Electronic Resource
    Artificial neural networks in Mössbauer material science (1997)
    Springer
    Czechoslovak journal of physics 47 (1997), S. 513-516 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Mössbauer spectroscopy is a useful technique for characterizing the valencies, electronic and magnetic states, coordination symmetries and site occupancies of the cation. The Mössbauer parameters of isomer shift and quadrupole splitting are useful to distinguish paramagnetic ferrous and ferric iron in several substances, while the internal magnetic field provides information on the crystallinity. In recent years artificial neural networks have shown to be a powerful technique to solve problems of pattern recognition of a mineral from its Mössbauer spectrum, Mössbauer parameters data bank, crystalline structure and magnetic phases of soil from Mössbauer parameters. A computer software named Mössbauer Effect Assistant has been developed. It uses learning vector quantization neural network linked to a Mössbauer data bank that contains Mössbauer parameters of isomer shift, quadrupole spliting, internal magnetic field and the references of the substances. The program identifies the substance under study and/or its crystalline structure when fed with experimental Mössbauer parameters. It can also list the references from the literature by feeding the name of the substance or the author of the publication. Typical application of Mössbauer Effect Assistant in iron-bearing materials Mössbauer spectroscopy is present in user friendly Microsoft Windows environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021299104733
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  • 7
    Electronic Resource
    Electronic Resource
    Anomalous magnetic behaviour of thermally treated yttrium-iron (atomic ratio 1:9) oxyhydroxide (1988)
    Springer
    Journal of materials science 7 (1988), S. 447-449 
    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/BF01730684
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  • 8
    Electronic Resource
    Electronic Resource
    Air Pollution Investigation in Vitória Metropolitan Region, ES, Brazil (2000)
    Springer
    Journal of radioanalytical and nuclear chemistry 246 (2000), S. 85-90 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The application of Mössbauer spectroscopy, X-ray diffractometry, thermogravimetric analysis and PIXE in the characterization of the particulate matter in atmospheric aerosols in Metropolitan Region of Vitória (MRV), Brazil have been investigated. The main sources of particulate matter, natural, industrial and antropogenic from human activities, have been studied to identify its contribution in the atmospheric particles. During the years 1995 to 1999 samples of total suspended particles (TSP, Ø ≤ 100 μm) were collected from four points within MRV. The inhalable particles (PM10 Ø ≤ 10 μm) and sedimented particles (SP) were also collected from the same region. A receptor modeling was used for the identification of the source of particulate matter in the collected urban aerosol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006729014335
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  • 9
    Electronic Resource
    Electronic Resource
    Mössbauer Spectroscopy and Radiofrequency Absorption Investigations of Pr Substituted 1-2-3 Type Compounds (2000)
    Springer
    Journal of radioanalytical and nuclear chemistry 246 (2000), S. 313-316 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 57Fe and 151Eu Mössbauer spectroscopy as well as RF susceptibility measurements were applied to study the effects of Pr substitution either into the rare earth or into the Ba site in Eu1−x Pr x Ba2Cu3O7−δ and EuBa2−x Pr x Cu3O7−δ, respectively. Site mixing of Pr between the rare earth and Ba sites could be excluded by the utilization of 57Fe Mössbauer spectroscopy. It was found that there exists a correlation between the 151Eu isomer shift and the onset temperature of the superconducting transition independent of the location of Pr. RF susceptibility measurements provide an evidence for a difference in the magnetic moment of Pr substituted for the Eu or Ba sites. The obtained results can be explained by hole filling as the dominant effect of Pr substitution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006770407434
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  • 10
    Electronic Resource
    Electronic Resource
    Mössbauer studies in thermally treated iron-samarium mixed oxide system (1994)
    Springer
    Journal of radioanalytical and nuclear chemistry 186 (1994), S. 455-462 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Mössbauer spectroscopy and X-ray diffractometry have been used to study Sm−Fe mixed oxides (with different Sm∶Fe atomic ratios) annealed at 550, 850, 1000 and 1250 °C. The room temperature Mössbauer spectra can be interpreted in terms of one, two or three sextets and in some cases by an additional doublet depending on the composition and the heat treatment. The sextets have been associated with SmFeO3 perovskite, Sm3Fe5O12 garnet and α-Fe2O3 hematite. These results are in agreement with those of X-ray diffractometric measurements, which give a clear, evidence of the presence of these phases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02167716
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