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  • 1
    Electronic Resource
    Electronic Resource
    EDI electron time-of-flight measurements on Equator-S (1999)
    Springer
    Annales geophysicae 17 (1999), S. 1513-1520 
    Details
    ISSN: 0992-7689
    Keywords: Magnetospheric physics (electric fields ; plasma convection ; instruments and techniques)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract We present the first electron time-of-flight measurements obtained with the Electron Drift Instrument (EDI) on Equator-S. These measurements are made possible by amplitude-modulation and coding of the emitted electron beams and correlation with the signal from the returning electrons. The purpose of the time-of-flight measurements is twofold. First, they provide the drift velocity, and thus the electric field, when the distance the electrons drift in a gyro period becomes sufficiently large. Second, they provide the gyro time of the electrons emitted by the instrument, and thus the magnitude of the ambient magnetic field, allowing in-flight calibration of the flux-gate magnetometer with high precision. Results of both applications are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-999-1513-3
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    EDI convection measurements at 5–6 RE in the post-midnight region (1999)
    Springer
    Annales geophysicae 17 (1999), S. 1503-1512 
    Details
    ISSN: 0992-7689
    Keywords: Magnetospheric physics (electric fields ; plasma convection ; instruments and techniques)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract We present the first triangulation measurements of electric fields with the electron drift instrument (EDI) on Equator-S. We show results from five high-data-rate passes of the satellite through the near-midnight equatorial region, at geocentric distances of approximately 5–6 RE, during geomagnetically quiet conditions. In a co-rotating frame of reference, the measured electric fields have magnitudes of a few tenths of mV/m, with the E × B drift generally directed sunward but with large variations. Temporal variations of the electric field on time scales of several seconds to minutes are large compared to the average magnitude. Comparisons of the “DC” baseline of the EDI-measured electric fields with the mapped Weimer ionospheric model and the Rowland and Wygant CRRES measurements yield reasonable agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-999-1503-5
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Post-exercise metabolic rate in Atlantic cod and its dependence upon the method of exhaustion (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 47 (1995), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: This study tests whether or not post-exercise oxygen consumption rates (Mo2) in fish are dependent upon how exhaustion is induced. A group of eight Atlantic cod (Gadus morhua) were each exercised using (1) a critical swimming speed (Ucrit) protocol, (2) an exercise protocol designed to measure anaerobic capacity of fish (Uburst), and (3) a protocol in which the fish were chased to exhaustion manually. Mo2 was measured for a 2-h period following exhaustion induced by all three exercise regimes (Ucrit, Uburst and chase). Post-exercise Mo2 following exhaustion from the Uburst and chase protocols were significantly higher than post-exercise Mo2 following the Ucrit protocol. Each fish during the Ucrit protocol exhibited maximal Mo2 during exercise rather than during recovery, yet 75% of the fish during Ubrust recovery and 100% during chase recovery exhibited Mo2 higher than that measured during Ucrit exercise. These results, as well as the large interindividual variations in Mo2 among the eight fish, show that post-exhaustion Mo2 is specific to the exercise regime employed, thus, investigators must exercise caution when combining results from different exercise protocols and/or individuals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1995.tb01907.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Axonal injury: a universal consequence of fatal closed head injury? (1995)
    Springer
    Acta neuropathologica 89 (1995), S. 537-543 
    Details
    ISSN: 1432-0533
    Keywords: β-Amyloid precursor protein ; Head injury ; Diffuse axonal injury ; Immunocytochemistry ; Diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract β-Amyloid precursor protein immunostaining has recently been shown to be a reliable method for detecting the damage to axons associated with fatal head injury. In an attempt to compare the efficacy of this technique with conventional histological detection of axonal damage, we have reanalysed sections from a large well-characterised series of head-injured and control patients. The results indicate that the frequency of axonal injury has been vastly underestimated using conventional silver techniques, and that axonal injury may in fact be an almost universal consequence of fatal head injury.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00571509
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Axonal injury: a universal consequence of fatal closed head injury? (1995)
    Springer
    Acta neuropathologica 89 (1995), S. 537-543 
    Details
    ISSN: 1432-0533
    Keywords: Key words β-Amyloid precursor protein ; Head injury ; Diffuse axonal injury ; Immunocytochemistry ; Diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract β-Amyloid precursor protein immunostaining has recently been shown to be a reliable method for detecting the damage to axons associated with fatal head injury. In an attempt to compare the efficacy of this technique with conventional histological detection of axonal damage, we have reanalysed sections from a large well-characterised series of head-injured and control patients. The results indicate that the frequency of axonal injury has been vastly underestimated using conventional silver techniques, and that axonal injury may in fact be an almost universal consequence of fatal head injury.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00571509
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    THE ELECTRON DRIFT INSTRUMENT FOR CLUSTER (1997)
    Springer
    Space science reviews 79 (1997), S. 233-269 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Electron Drift Instrument (EDI) measures the drift of a weak beam of test electrons that, when emitted in certain directions, return to the spacecraft after one or more gyrations. This drift is related to the electric field and the gradient in the magnetic field, and these quantities can, by use of different electron energies, be determined separately. As a by-product, the magnetic field strength is also measured. The present paper describes the scientific objectives, the experimental method, and the technical realization of the various elements of the instrument.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004917512774
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Degeneracy in human multicopy RBM (YRRM), a candidate spermatogenesis gene (1996)
    Springer
    Mammalian genome 7 (1996), S. 835-842 
    Details
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. In order to search for mutations in the multicopy RBM genes that might be associated with male infertility, we have used sequence data from the reported cDNA clone to determine the intron exon boundaries of the YRRM 1 gene. This gene has 12 exons, three of which encode the putative RNA binding domain of the protein. Different copies of the gene contain sequence variations and, additionally, give rise to transcripts with different numbers of copies of the repeated SRGY motif. Since mutations in the RNA binding domain would seem likely to have an effect on the activity of the protein, we have scanned these exons for mutations by SSCP on DNA from normal and infertile men. Sequence differences in the exon encoding the N-terminal part of the RNA binding domain account for at least four different classes of the gene and give rise to different SSCP conformers. Sequence analysis shows that one of these classes is a pseudogene and that the members of another class are nonfunctional. RT-PCR shows that all classes are transcribed and that the A class is most abundant. We have found a point mutation that alters the highly conserved RNP2 motif in one infertile patient. This mutation is also found in his father. We have used PCR followed by SSCP analysis to map RBM on a Y Chromosome (Chr) YAC contig and have demonstrated a distribution that spans a major part of this chromosome's euchromatin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003359900246
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    Paper (German National Licenses)
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