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  • 1
    Electronic Resource
    Electronic Resource
    Reconstruction for the brilliance-upgrading project of the Photon Factory storage ring (1998)
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 5 (1998), S. 366-368 
    Details
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Reconstruction of the Photon Factory storage ring (PF ring; 2.5 GeV) is now in progress to provide very brilliant synchrotron radiation to users, i.e. the emittance is being reduced by a factor of five. Components, such as the quadrupole and sextupole magnets, vacuum chambers, beamlines and beam-position monitors, are being replaced by new ones in 16 normal-cell sections of the PF ring. The accelerating cavities, injection systems and control systems are also being replaced. Operation will commence when the improvements are completed on 1 October 1997.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0909049597014118
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of the structure factors of diamond (1990)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 514-517 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The absolute values of the structure factors of diamond are determined for nine low-order reflections by measuring the X-ray Pendellösung beats on the wavelength scale. Parallel-sided wafers of synthetic diamond single crystals are used for specimens. The deformation charge density and the Debye-Waller B factor are evaluated from the structure factors. The charge density of pile-up electrons is estimated to be 0.44(17) eÅ-3 at the midpoint between the nearest-neighbour atoms. The density is slightly smaller than that determined by the powder diffraction method. The obtained B factor, 0.142 (9) Å2, is in good agreement with that evaluated to date from neutron diffraction measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767390002197
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Selective loss of nigral neurons in Pick's disease: a morphometric study (1990)
    Springer
    Acta neuropathologica 81 (1990), S. 155-161 
    Details
    ISSN: 1432-0533
    Keywords: Pick's disease ; Substantia nigra ; Pigmented neurons ; Morphometry ; Parkinsonism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Loss of neurons from the substantia nigra (SN), which is often encountered in Pick's disease, was quantitatively analyzed in 13 cases of Pick's disease and 19 age-matched controls. On sections from the upper and lower portions of the SN, the pigmeted zone (zona compacta) and the non-pigmented zone (zona reticulata) were delineated, and these zones were partitioned into quarters: medial, mid-medial, mid-lateral and lateral. Neuronal loss was fairly severe and more evident in the upper section of the SN (−40%), especially in the midmedial and lateral quarters. In the lower section (neuronal loss:−28%), the medial quarter was most severely affected. Non-pigmented neurons were preserved. Fibrillary gliosis was denser in the zona reticulata, where neuronal loss was minimal. These findings revealed a selective vulnerability of nigral neurons according to their topography and pigmentation and suggests the primary involvement of some neuronal groups (especially the pigmented neurons) of the SN in Pick's disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00334504
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  • 4
    Electronic Resource
    Electronic Resource
    Dentatorubropallidoluysian atrophy: clinicopathological study of dementia and involvement of the nucleus basalis of Meynert in seven autopsy cases (1998)
    Springer
    Acta neuropathologica 96 (1998), S. 502-508 
    Details
    ISSN: 1432-0533
    Keywords: Key words Dentatorubropallidoluysian atrophy ; Dementia ; Nucleus basalis of Meynert ; Neuropathology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This report concerns a clinicopathological study including a quantitative pathological study on the nucleus basalis of Meynert (nbM) of seven Japanese autopsy cases (four male, three female) of dentatorubropallidoluysian atrophy (DRPLA) with special reference to the clinicopathological correlation of dementia in DRPLA. In each case the pattern of the inheritance was consistent with that of an autosomal dominant trait. The neurological examination revealed that all seven individuals had cerebellar signs. Six patients had epilepsy and choreoathetoid involuntary movement; myoclonus was evident in five patients. Dementia was noted in all seven patients. Degeneration of the globus pallidus (particularly the lateral segment) and of the dentate nucleus was the principal pathological feature. Brain weights at autopsy ranged from 1020 to 1400 g (average 1241 g: male 1320 g, female 1135 g). The quantitative evaluation revealed no significant loss of neurons in the nbM as compared with a control group. There was no clinicopathological correlation between dementia and involvement of the nbM. We suggest that the dementia of DRPLA is due not to the involvement of the nbM, but to – as yet – unidentified pathology elsewhere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010050925
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  • 5
    Electronic Resource
    Electronic Resource
    MR cisternography using a three-dimensional half-Fourier single-shot fast spin-echo sequence (1998)
    Springer
    European radiology 8 (1998), S. 424-426 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Cisternography ; MR imaging ; Half-Fourier imaging ; Cranial nerves
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Application of a three-dimensional half-fourier single-shot fast spin-echo sequence to MR cisternography is presented. This technique is capable of demonstrating normal cranial nerves. It is also useful in screening for acoustic neuroma as well as in the diagnosis of neurovascular compression.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050405
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  • 6
    Electronic Resource
    Electronic Resource
    Vitamin E deficiency in acquired fat malabsorption (1990)
    Springer
    Journal of neurology 237 (1990), S. 103-106 
    Details
    ISSN: 1432-1459
    Keywords: Vitamin E deficiency ; Fat malabsorption ; Diabetes mellitus ; Chronic pancreatitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirteen patients with adult-onset vitamin E deficiency due to fat malabsorption were investigated clinically and electrophysiologically. These patients had slightly or moderately decreased serum vitamin E (1.7–4.8 μg/ml, normal 〈6.0) or vitamin E/cholesterol ratio (0.21–0.31 mg/g, normal 〈0.35). Only one patient had typical neurological manifestations of vitamin E deficiency, which improved with supplementary vitamin E. The pathological findings in this patient were also compatible with vitamin E deficiency. This patient had poorly controlled diabetes mellitus due to advanced chronic pancreatitis. Reviewing previously reported cases of vitamin E deficiency with diabetes mellitus in chronic pancreatitis, the duration of deficiency until the onset of symptoms was shorter than in those cases without complications. Although adult patients with early, slight deficiency of vitamin E are generally asymptomatic, patients with diabetes mellitus tend to have early neurological symptoms. The vitamin E tolerance test should be used, because even in some patients with vitamin E deficiency due to malabsorption, the deficiency can be overcome by large oral doses of vitamin E.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314671
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