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  • Springer  (80)
  • Copernicus  (7)
  • Wiley-Blackwell  (6)
  • Geological Society of America (GSA)  (4)
  • 2015-2019  (74)
  • 1985-1989  (23)
  • 1955-1959
  • 1930-1934
  • 2017  (74)
  • 1986  (8)
  • 1985  (15)
  • 1
    Electronic Resource
    Electronic Resource
    On the dimensions of ordered sets of bounded degree (1986)
    Springer
    Order 3 (1986), S. 15-20 
    Details
    ISSN: 1572-9273
    Keywords: 06A10 ; Partially ordered set
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Let P be a partially ordered set. Define k = k (P) = max p∈ |{x ∈ P : p 〈 x or p = x}|, i.e., every element is comparable with at most k others. Here it is proven that there exists a constant c (c 〈 50) such that dim P 〈 ck(log k)2. This improves an earlier result of Rödl and Trotter (dim P ≤2 k 2+2). Our proof is nonconstructive, depending in part on Lovász' local lemma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00403406
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  • 2
    Electronic Resource
    Electronic Resource
    Transfection of murine LMTK− cells with purified HLA class I genes (1986)
    Springer
    Immunogenetics 23 (1986), S. 246-251 
    Details
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The individual contributions of the first two external domains of the HLA-B7 heavy chain to the expression of allele-specific (B7) and locus-specific (B and C) antigenic determinants were investigated using hybrid class I genes. Hybrid genes were constructed in vitro by exon shuffling between the parent genes HLA-B7, HLA-Cw3, HLA-A3, and H-2K d, and their expression was monitored following transfection into mouse L cells. The results show that most allele-specific antigenic determinants are associated with the first external domain of the 137 heavy chain, whereas all the locus-specific antigenic determinants tested map to the second external domain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00373019
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  • 3
    Electronic Resource
    Electronic Resource
    Internal representations and operations in the visual comparison of transformed patterns: Effects of pattern point-inversion, positional symmetry, and separation (1985)
    Springer
    Biological cybernetics 51 (1985), S. 305-312 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract A scheme for visual pattern recognition is described. It is supposed, amongst other things, that patterns are internally represented by the visual system in terms of local features, spatial-order relations between local features, and global spatial relations specifying approximate pattern position with respect to the point of fixation. It is further supposed that there are two distinct types of internal operation that may be applied to the components of internal representations in the process of pattern comparison: typically a discrete spatial-order-reversal operation and a continuous position-shift operation. Some general predictions of the scheme are tested against data obtained in an experiment using random-dot patterns that were subjected to rigid transormations and presented at various locations along the horizontal meridian. Patterns were presented sequentially, in pairs, to subjects in a “same-different” comparison task. Pattern pairs were to be responded to as “same” if they were identical or related by point-inversion (planar rotation through 180°) or responded to as “different”. Extending earlier findings, the present results showed that “same”-detection performance for identical and point-inverted patterns depended differentially on the distance between the patterns and the symmetry of the pattern positions about the point of fixation in a manner consistent with the predictions of the scheme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00336917
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  • 4
    Electronic Resource
    Electronic Resource
    Immunohistochemical staining of macrophages in the skin lesions of leprosy: the role of antibody to mycobacteria in human serum and various polyclonal immune rabbit antisera (1985)
    Springer
    Journal of molecular histology 17 (1985), S. 1009-1020 
    Details
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Immunohistochemical staining of tuberculoid and lepromatous leprosy skin lesions was performed using various rabbit antisera. Macrophages in both stained with serum containing antibodies against lysozyme and alpha-1-antitrypsin, while macrophages in lepromatous leprosy also reacted with other antibodies. An immunoglobulin fraction of positive serum stained following pepsin digestion, indicating that reactivity was not Fc dependent. Positive serum contained antibody againstMycobacterium butyricum, which caused macrophage staining, since affinity-purified antibody did not stain and absorption withM. butyricum removed staining. Staining was also produced by serum of subjects with leprosy or a positive tuberculin test. By immunoblotting, the anti-mycobacterial antibody was directed against surface components ofM. butyricum of molecular weights 20 000–70 000. Electron microscopy showedM. leprae in phagolysosomes of macrophages, while immunoelectron microscopy demonstrated labelling along bacterial cell membranes. Therefore, macrophages in lepromatous leprosy skin lesions stain because they containM. leprae, which reacts with antibody to eitherM. leprae, M. tuberculosis or atypical mycobacteria in human serum and with antibody toM. butyricum in serum from rabbits immunized with various antigens and Freund's complete adjuvant. These results indicate that immunohistochemical studies on leprosy are misleading if performed using intact polyclonal immune sera rather than affinity purified or monoclonal antibodies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01417949
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  • 5
    Electronic Resource
    Electronic Resource
    EXOSAT observations of active stellar coronae in the Cygnus Loop, T Tau & NGC 2264 regions (1985)
    Springer
    Space science reviews 40 (1985), S. 73-78 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A highly variable point X-ray source, first seen by the Einstein IPC, has been positioned with the EXOSAT CMA and identified with a bright (V = 8.5) K0 star. Although in the direction of the southern half of the Cygnus Loop, this star is almost certainly a foreground object and typical of other active cool stars that are related to RS CVn systems. An EXOSAT program to study T Tauri stars failed to detect T Tau itself. However, a strong X-ray source was observed 15′ from T Tau, which in its turn had not been seen by Einstein. This new source has been identified with a hitherto unstudied 13 mag star which is likely to be a dMe flare star. The young star cluster NGC 2264 was observed with the EXOSAT CMA in an attempt to identify the sources found during an Einstein IPC study of S Mon. Apart from S Mon itself, only UV-bright objects were seen, but several of these are considered likely counterparts of the Einstein sources.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212869
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  • 6
    Electronic Resource
    Electronic Resource
    High and medium resolution spectroscopy of the X-ray transient 4U1543-47 (1985)
    Springer
    Space science reviews 40 (1985), S. 207-212 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Preliminary results of an EXOSAT observation of the transient X-ray source 4U1543-47 are presented. The source was observed in August 1983, during a high state, following a Tenma alert that the source was again active. Results from the GSPC and the LE 1000 l/mm grating are presented. The spectrum is complex, but in the 2–10 keV energy range can be well described by a Comptonised thermal distribution. Extrapolating the same model into the lower energy band of the grating requires an absorption column density equivalent to 2 × 1021 H cm2. A marked under-abundance of Oxygen and overabundance of Nitrogen, along with a strong, unidentified line feature at 9.8 Å, are necessary to model the grating data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212886
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  • 7
    Electronic Resource
    Electronic Resource
    X-ray, optical and UV observations of the AM Her system E2003+225 (1985)
    Springer
    Space science reviews 40 (1985), S. 151-155 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The AM Her type object E2003+225 was observed with EXOSAT, IUE and ground-based telescopes on 1983 Oct. 12. The brightness of the ultrasoft X-ray component allowed the Objective Grating Spectrometer (OGS) to be used, which gave a model-independent determination of the temperature of the blackbody spectrum. The star was observed again on 1984 July 24 by IUE with simultaneous optical spectrophotometry. The high resolution of this observation revealed complex line profiles, and a systematic velocity much smaller than previously reported. The composite energy distribution is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212879
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  • 8
    Electronic Resource
    Electronic Resource
    An EXOSAT observation of the morphology of the coronal X-ray emission from algol (1985)
    Springer
    Space science reviews 40 (1985), S. 25-33 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The X-ray emission from Algol is thought to originate in a corona associated with the K star in this system. We report the results of a 35 hr continuous EXOSAT observation through secondary optical eclipse that was designed to measure the structure of the corona. No obvious X-ray eclipse was seen. The spectrum measured by the ME gives a temperature of 2.5 × 107 K, consistent with the hard component previously seen by the Einstein SSS. The soft component previously reported by the SSS would only contribute at most 25% to the count rate seen in the LE (used with Al/P). The lack of a hard X-ray eclipse indicates the dimensions of the higher temperature emission region to be comparable to or greater than the size of the K star. An X-ray flare was detected with a peak luminosity of 1.4 × 1031 erg s-1 and a total duration of 8 hours. The peak temperature was 5.0 keV with an emission measure of 9.4 × 1053 cm-3. The thermal nature of the flare is confirmed by the detection of an iron line with an EW of ∼2 keV. By equating the observed decay time of the flare to a known cooling law gives a dimension for the flaring loop of ∼0.3 stellar radii. This is much smaller than the dimensions of the hard component inferred from the lack of an eclipse. It seems probable that the flare occurred in one of the loops responsible for the lower temperature component seen by the SSS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212862
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  • 9
    Electronic Resource
    Electronic Resource
    Ferricenium benzyltriethylammonium μ-oxobis[trichloroferrate(III)], the first isolated oxodiferrate of the double salt type (1986)
    Springer
    Transition metal chemistry 11 (1986), S. 70-71 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00618605
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  • 10
    Electronic Resource
    Electronic Resource
    Barseem (Trifolium alexandrnum) protein concentrate in broiler rations (1986)
    Springer
    Plant foods for human nutrition 36 (1986), S. 185-190 
    Details
    ISSN: 1573-9104
    Keywords: Barseem ; leaf protein ; poultry ration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Animal protein in broiler rations was replaced with Barseem Protein Concentrate (BPC). The standard group having blood, meat and fish meal as sources of animal protein showed an average weight gain of 1655 g. Replacement of blood meal with BPC resulted in a slight decrease in the average weight gain (1541 g) of broilers. Average weight gain of broilers increased to 1775 g and 1671 g when fish or meat meal was replaced with BPC in rations. Complete replacement of animal protein with BPC adversely affected growth and average weight gain decreased to 1443 g. Supplementation with lysine or methionine when animal protein was replaced with BPC did not improve growth of the broilers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01092035
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