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  • 1
    Electronic Resource
    Electronic Resource
    Isomeric yield ratios of fission products in the system of 24 MeV proton-induced fission of238U (1993)
    Springer
    The European physical journal 347 (1993), S. 53-62 
    Details
    ISSN: 1434-601X
    Keywords: 25.85.Ge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Isomeric yield ratios of 30 fission products in 24 MeV proton-induced fission of238U were measured by the use of the ion-guide isotope separator on-line. The obtained isomeric yield ratios were converted to the angular momenta of primary fission fragments based on the statistical model. The deduced angular momenta were examined from various aspects. It is found that in general the angular momentum continuously increases with the fragment mass number including the region of symmetric mass division. However, there are some exceptions. For Sn isotopes the deduced angular momenta are quite small due to the spherical shape of the nuclear shell configuration. It is also concluded from the consideration of the charge distribution that the angular momentum of fission product scatters considerably within the narrow range of mass division. The dependence of the angular momentum on the available energy of fragments at scission point indicates that the individual fragment possesses a characteristic deformation at scission and/or the deduced angular momentum is seriously affected by the particle excitation after scission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01301277
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  • 2
    Electronic Resource
    Electronic Resource
    Cystic meconium peritonitis: ultrasonographic features (1984)
    Springer
    Pediatric radiology 14 (1984), S. 18-22 
    Details
    ISSN: 1432-1998
    Keywords: Meconium ; Peritonitis ; Ultrasonics ; Intestinal perforation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Meconium peritonitis occasionally occurs as a localized, encysted collection of meconium ranging from a few centimeters in size to huge cysts occupying most of the abdominal cavity. The cyst wall consists of fibrous granulation tissue and the cyst may contain only meconium or may also encase loops of bowel. Gas within the cyst indicates persistent communication between the perforated bowel and the cyst cavity; if the perforation seals over in utero the cyst remains gasless. Calcification is a variable finding. Sonography in two neonates with cystic meconium peritonitis showed well-defined, echogenic masses, one of which contained calcifications and was detected in utero.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02386725
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  • 3
    Electronic Resource
    Electronic Resource
    Bilateral organized chronic subdural haematomas: High field magnetic resonance images and histological considerations (1994)
    Springer
    Acta neurochirurgica 131 (1994), S. 265-269 
    Details
    ISSN: 0942-0940
    Keywords: Organized chronic subdural haematoma ; high field MRI ; histology ; growth mechanism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors describe a 66-year-old man with progressive gait disturbance caused by bilateral organized chronic subdural haematomas. The characteristics of these lesions on magnetic resonance (MR) images have not yet been clarified. The organized haematoma in our patient exhibited slight hypo-intensity on T 1-weighted MR images and marked hypo-intensity on T 2-weighted MR images obtained at 1.5 T. Preoperative MR imaging may give us useful information about surgical strategy in the case of chronic subdural haematoma with an unusual appearance on computed tomographic (CT) scans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01808625
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  • 4
    Electronic Resource
    Electronic Resource
    Changes in the basal ganglia and thalamus following reperfusion after complete cerebral ischaemia (1994)
    Springer
    Neuroradiology 36 (1994), S. 605-607 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Basal ganglia ; Thalamus ; Complete cerebral ischaemia ; Cardiac arrest
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report specific changes bilaterally in the basal ganglia and thalamus following reperfusion after complete cerebral ischaemia. A 69-year-old man, resuscitated after cardiac arrest, showed symmetrical lowdensity lesions in the head of the caudate nucleus and lentiform nucleus on CT. MRI revealed methaemoglobin derived from minor haemorrhage in the basal ganglia and thalamus, not evident on CT. We suggest that this haemorrhage results from diapedesis of red blood cells through the damaged capillary endothelium following reperfusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00600418
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  • 5
    Electronic Resource
    Electronic Resource
    Pseudoweb of the gastric antrum in infants (1980)
    Springer
    Pediatric radiology 9 (1980), S. 73-75 
    Details
    ISSN: 1432-1998
    Keywords: Antral web ; Gastric outlet obstruction ; Flexible fiberoptic gastroscopy ; Incomplete pyloric diaphragm ; Incomplete antral membrane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two infant boys, one 3 months of age and the other 8 weeks of age, with symptoms suggesting gastric outlet obstruction had upper gastrointestinal fluororadiographic examinations which showed typical signs for gastric antral webs (diaphragms or membranes), but neither had actual webs as proven by surgery in one and by endoscopy in the other. The report emphasizes the possibility of falsely positive radiographic findings, which can be tested by potentially corroborative fiberoptic endoscopy, thus avoiding unnecessary surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00977668
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  • 6
    Electronic Resource
    Electronic Resource
    Acylcarnitine profile in tissues and body fluids of biotin-deficient rats with and withoutl-carnitine supplementation (1994)
    Springer
    Journal of inherited metabolic disease 17 (1994), S. 678-690 
    Details
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Since biotin-deficient (BD) rats are a good animal model for human multiple carboxylase deficiency and have low plasma free carnitine levels, short-chain acylcarnitine profiles in biotin-deficient rats withl-carnitine supplementation (BDC rats) and BD rats were investigated by fast-atom bombardment and tandem mass spectrometry and gas chromatography/mass spectrometry. By the latter method, 3-hydroxyisovalerylcarnitine was identified in BD rats, and showed the greatest accumulation among short-chain acylcarnitines in tissues of BD rats, while the tissue levels of propionic acid were more markedly elevated than those of 3-hydroxyisovaleric acid. The tissue levels of 3-hydroxyisovaleryl-carnitine were significantly lower and those of propionyl-carnitine were somewhat higher in BDC rats than in BD rats, while the tissue levels of propionic acid and 3-hydroxyisovaleric acid in BDC rats were lower than those in BD rats. These changes were more apparent in kidney than in other tissues. The amounts of urinary excretion of acylcarnitines were markedly larger, and those of 3-hydroxyisovaleric acid were somewhat smaller in BDC rats than in BD rats, while those of propionic acid were very low in BD and BDC rats as compared with those of 3-hydroxyisovaleric acid. It seems that the relationship between the concentrations of 3-hydroxyisovalerylcarnitine and those of propionylcarnitine reflects the unique metabolism of the related metabolites in tissues, especially in kidney, which may be influenced by their urinary excretion and the availability of free carnitine. These data in biotin deficiency suggest that carnitine supplementation is possibly beneficial for patients with holocarboxylase synthetase deficiency who respond incompletely to biotin therapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00712010
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  • 7
    Electronic Resource
    Electronic Resource
    Determination of the change of nuclear charge radius of the119Sn Mössbauer transition by internal conversion (1984)
    Springer
    Hyperfine interactions 20 (1984), S. 305-325 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Radioactive119Sb was implanted into six host matrices (CaSnO3, Pt, Y, Au,Β-Sn, Pb) and internal conversion electrons of the 23.87 keV transition in119Sn were measured with an iron-free magnetic spectrometer as well as Mössbauer spectra. In the analysis of the conversion spectra of outermost electrons, the overlapping K-LM Auger lines were subtracted using the Auger spectrum of tin measured with another source of117mSn, and the shake-off effect accompanying the conversion process was considered. From the correlation between the Mössbauer isomer shifts and the intensity ratios of O-shell to N1-shell conversion electrons, the change of the nuclear charge radius of the 23.87 keV transition of119Sn was deduced to be δR/R=(0.87 ± 0.25) × 10−4 for a uniform charge distribution ofR= 1.2 ×A 1/3 fm or, equivalently, δ 〈r2〉—=(3.6 ± 1.0) ×10−3 fm2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02069379
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  • 8
    Electronic Resource
    Electronic Resource
    A precision measurement of the hyperfine structure of87Sr+ (1993)
    Springer
    Hyperfine interactions 78 (1993), S. 241-245 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The ground state hyperfine splitting of87Sr+ was measured with a precision of 1×10−8. The experiments were performed with an RF ion trap connected to an ISOL (isotope separator on-line), where all the possible transitions between Zeeman sublevels were observed by a laser-microwave double resonance method. The magnetic dipole hyperfine constant was determined to beA=−1 000 473.673 (11) kHz.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00568145
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  • 9
    Electronic Resource
    Electronic Resource
    Nuclearg-factors of the 1229 and 2911 keV isomers in143Nd (1994)
    Springer
    The European physical journal 348 (1994), S. 173-176 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 23.20.−g ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Nuclearg-factors of the 1229 keV 13+/2 and 2911 keV 21+/2 level and the half-life of the 1229 keV level have been measured to beg(1229)=0.058(5),g(2911)=0.69(12) andT 1/2 (1229)=6.79(2) ns. The experimental g-factors show that the 1229 keV level has a dominant configuration of (ρf 7/2⊗3−), and the 2911 keV level has an almost pure (ρf 7/2⊗7−), configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291914
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  • 10
    Electronic Resource
    Electronic Resource
    Internal conversion of valence shell electrons: Measurement and analysis for the 10.84 keV transition in206Bi (1981)
    Springer
    The European physical journal 299 (1981), S. 283-290 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Conversion electrons of the 10.84 keV transition in206Bi were measured with the iron-free magnetic spectrometer. The conversion line of the valence shell was observed to be narrower than those of the inner ones. The computer program which optimizes the line profiles given numerically is outlined and used for the spectrum analysis. The studied transition was proved to be pure M1 with the nuclear structure parameterλ=1.7±0.7. The internal conversion coefficients were calculated using the relativistic Hartree-Fock model for neutral atoms as well as various isolated ions. Altogether, 15 different valence-shell configurations were considered. The prediction for the 6s 1 2/2 configuration (Bi3+) is in accord with the measured conversion intensities. This is consistent with probable chemical form Bi2O3 of bismuth atoms in the radioactive source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01441269
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