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  • 1
    Electronic Resource
    Electronic Resource
    A straightforward estimation of the maximum sunspot number for cycle 23 (1999)
    Springer
    Annales geophysicae 17 (1999), S. 639-641 
    Details
    ISSN: 0992-7689
    Keywords: Solar physics ; astrophysics and astronomy (magnetic fields; general)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Using the annual number of geomagnetically quiet days (aa 〈 20 γ) for the year after the solar minimum, this precursor method predicts that the maximum sunspot number for cycle 23 will be 140 + 32, indicating that cycle 23 will be similar to cycles 21 and 22.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-999-0639-7
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  • 2
    Electronic Resource
    Electronic Resource
    Lubrication of selected salivary molecules and artificial salivas (1989)
    Springer
    Dysphagia 4 (1989), S. 95-100 
    Details
    ISSN: 1432-0460
    Keywords: Human saliva, lubrication ; Artificial saliva, lubrication ; Saliva, viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The lubrication regime displayed by human salivas (parotid and submandibular-sublingual), purified salivary molecules (the mucins MG1 and MG2 and α-amylases), and selected artificial salivas (Oracare D, Saliva Substitute, and Orthana) was assessed in vitro using a friction-testing device. Thin-film (boundary) lubrication was observed for all of the salivary samples and two of the artificial salivas examined. Oracare D, a glycerol-based artificial saliva, was the exception since it lubricated by a thick-film (hydrodynamic) regime. On a molar basis, the best lubricants of the purified salivary molecules were MG1 〉 MG2 ≈ nonglycosylated α-amylases ≈ glycosylated α-amylases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02407152
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  • 3
    Electronic Resource
    Electronic Resource
    Geomagnetic activity and wind velocity during the Maunder minimum (1997)
    Springer
    Annales geophysicae 15 (1997), S. 397-402 
    Details
    ISSN: 0992-7689
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Following a given classification of geomagnetic activity, we obtained aa index values for the Maunder minimum (1645–1715). It is found that the recurrent and fluctuating activities were not appreciable and that the shock activity levels were very low. The aa index level was due almost entirely to the quiet days. Calculated average solar-wind velocities were 194.3 km s−1 from 1657 to 1700 and 218.7 km s−1 from 1700 onwards. Also, the coronal magnetic field magnitude and southward interplanetary magnetic field component Bz were lower. It is concluded that the nearly absent levels of geomagnetic activity during this period were due to lower coronal and Bz magnetic field magnitudes as well as to the continuous impinging on the Earth of a slow wind.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-997-0397-3
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  • 4
    Electronic Resource
    Electronic Resource
    The geomagnetic response to the Earth's crossing of the heliospheric current sheet
    Amsterdam : Elsevier
    Advances in Space Research 13 (1993), S. 41-44 
    Details
    ISSN: 0273-1177
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0273-1177(93)90310-8
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  • 5
    Electronic Resource
    Electronic Resource
    The association of Coronal Mass Ejections during solar maximum times with the heliomagnetic current sheet
    Amsterdam : Elsevier
    Advances in Space Research 13 (1993), S. 183-186 
    Details
    ISSN: 0273-1177
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0273-1177(93)90475-Q
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  • 6
    Electronic Resource
    Electronic Resource
    The half-life and formation cross-section of ^1^7^7^mLu
    Amsterdam : Elsevier
    Journal of Inorganic and Nuclear Chemistry 29 (1967), S. 865-867 
    Details
    ISSN: 0022-1902
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-1902(67)80069-1
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  • 7
    Electronic Resource
    Electronic Resource
    Magnetic flux emergence and geomagnetic activity, a close correlation (1999)
    Springer
    Solar physics 185 (1999), S. 405-416 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We analyse data of magnetic flux emergence for solar cycles 21 and 22, Helios 1 interplanetary shocks for cycle 21, and sudden storm commencements (SSCs) for cycles 11–22. A dominant variation of 3-year periodicity was found for all three phenomena during cycles 21 and 22. This indicates a correlation and a possible influence of the rate of solar magnetic flux emergence to produce the interplanetary phenomena studied in this work; in particular, the suggested role of coronal mass ejections as a means by which magnetic flux and stresses are taken out of the corona seems to be plausible. When taking cycles 11–22 in SSCs, the main periodicity changes to around 4 years; this may be an indication of flux emergence rate variations over the cycles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005194512272
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  • 8
    Electronic Resource
    Electronic Resource
    Energy Spectra of Accelerated Solar Protons From Different Sources – I. Reconstruction and Properties of the Source Spectrum (1999)
    Springer
    Solar physics 186 (1999), S. 381-400 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is widely accepted now that a significant fraction of the solar energetic particles (SEPs) observed at 1 AU after major solar flares are actually accelerated at a CME-driven shock. In addition, in the emerging new paradigm for SEP acceleration in different sources at or near the Sun, the existence of two types of flares – impulsive and gradual – is recognized. Within this concept, it is tempting also to separate SEPs into two groups – interacting and escaping – and to derive their 'source spectra' from observational data on various flare emissions (protons, gamma rays, neutrons, etc.). By different techniques, those spectra have been reconstructed for 80 solar proton events (SPE) in 1949–1991. In this paper, all available data on the source spectra of solar protons are summarized and revised. We discuss in detail existing uncertainties in the derived spectral indexes, consider other methodological problems involved in this study, and suggest several possible lines for the future investigations of solar flares and SCRs using the source spectrum data. It is noted that some peculiarities of the spectra, for instance, spectral steepening for high energies, may be characteristic of large events of the 23 February 1956 type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005190525187
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  • 9
    Electronic Resource
    Electronic Resource
    The intense solar activity of march 1989 as a precursor for the occurrence of an ENSO by the end of 1989 (1990)
    Springer
    Solar physics 126 (1990), S. 195-199 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We studied the occurrence of ENSO (El Niño-Southern Oscillation) events in relation to solar activity conditions and we found that the events are distributed in two populations, one that could be associated with low latitude coronal holes which occur along the ascending phase of the cycle and the other one which could be related to polar holes present at the end of the descending phase. As highly anomalous solar activity, in terms of flares and coronal holes, occurred in March of this year, we propose that an ENSO event is likely to occur by the end of the year.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00158307
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  • 10
    Electronic Resource
    Electronic Resource
    The role of flares, CMEs and CME shocks in the generation of solar energetic proton events (1995)
    Springer
    Solar physics 160 (1995), S. 353-362 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We examined solar energetic proton (SEP) events associated with intense Hα flares. We located these flares on the solar disk and obtained their distribution in heliographic longitude as well as their angular distance distribution with respect to the neutral lines corresponding to the heliospheric current sheet at 2.5R⊙. We found that the SEP-associated Hα flares tend to occur in active regions at the feet of those helmet streamers which form the heliomagnetic equator and are related to coronal mass ejections (CMEs) and CME shocks. We discuss the possible role of flares, CMEs and CME shocks in generating SEPs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00732813
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