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  • 1
    Electronic Resource
    Electronic Resource
    Pathology of spinal cord lesions caused by ossification of the posterior longitudinal ligament (1984)
    Springer
    Acta neuropathologica 63 (1984), S. 123-130 
    Details
    ISSN: 1432-0533
    Keywords: Ossification of the posterior longitudinal ligament ; Spinal cord lesions ; Compression myelopathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The pathologic changes in the spinal cord of three autopsied cases associated with ossification of the posterior longitudinal ligament (OPLL) are reported. Compression of the spinal cord was marked at the level of the intervertebral disc, and the spinal cord was strikingly flattened antero-posteriorly. Intensive damage was seen in the gray matter as compared to the white matter. The white matter showed demyelination and axon loss with status spongiosus, which was more marked in the postero-lateral than in the anterior columns. The most seriously damaged parts of the spinal cord showed tissue necrosis and cavity formation which extended from the central parts of the gray matter to the ventral parts of the posterior columns. Adventitial fibrous thickening of the vein, hyaline degeneration of the walls of the arterioles, and compression of the anterior spinal vein were observed in the damaged regions. It was evident that secondary circulatory disturbance due to the compression produced by the ossification was of significance in the pathogenesis of the spinal cord damage. A tangle of peripheral nerves, ectopic and reactive, with Schwann cell proliferation was present in the posterior median fissure and the postero-lateral columns in one case. The spinal nerve roots that showed marked demyelination and axon loss were damaged by ossification at the places where the anterior nerve roots emerged from the spinal cord and where the roots penetrate the dura. There was ossification of the dura mater in all cases examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697194
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  • 2
    Electronic Resource
    Electronic Resource
    Comparative studies on the distribution mode of orthomyxo-virus and paramyxo-virus receptor possessing cells in mice and birds (1982)
    Springer
    Medical microbiology and immunology 171 (1982), S. 59-68 
    Details
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Many experimental studies have shown that orthomyxo- and paramyxo-viruses may be pneumotropic, but not enterotropic in mammals. On the other hand, these viruses are both pneumotropic and enterotropic in avian species. We have devised a new method for detecting virus receptor possessing cells (VRPC) in tissue sections. VRPC could be detected in the cells lining the airways of both mice and birds. The mode of distribution of VRPC in mouse digestive system differed remarkedly from that in avian digestive system. VRPC were not found in the epithelium of mouse digestive systems whereas the epithelium of bird digestive system were abundant in VRPC. When the large intestines from mice or duck undergoing laparotomy and inoculated directly into intestine with influenza virus were examined, viral antigen was detected in the epithelial cells of duck colon, but not in mouse intestines. From the study utilizing the new method, it could be concluded that the distribution mode of VRPC is one of the most important factors determining the virus tissue sepcificity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02122708
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  • 3
    Electronic Resource
    Electronic Resource
    Shadowgraphic and emission imaging spectroscopic studies of the laser ablation of graphite in an Ar gas atmosphere (1999)
    Springer
    Applied physics 69 (1999), S. S223 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 61.46.tw; 81.05.Tp
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Laser ablation of graphite in an Ar atmosphere at 560 Torr was done using a nanosecond-pulse Nd:YAG laser (1064 nm) at a fluence of 12 J/cm2. Dynamics in the ejection of carbon species and in their confinement near the graphite surface (〈1 mm) due to their numerous collisions with Ar atoms were investigated by shadowgraphy, emission imaging, and emission spectroscopy at delay times of 0.01–100 μs following the laser irradiation. A shock wave was generated, and temporally and spatially dependent emissions from Ar+ and Ar were observed in addition to those from carbon species (C, C+, and C2) and the Bremsstrahlung radiation from a hot plasma. We suggest that the dissipation of the kinetic and thermal energies of the carbon species, their backward motion, and their collisions with each other lead to the formation of clusters and particles through the interaction with Ar atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003399900216
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  • 4
    Electronic Resource
    Electronic Resource
    Evidence for anomalously small charge transfer in doped single-wall carbon nanohorn aggregates with Li, K and Br (2000)
    Springer
    Applied physics 71 (2000), S. 561-564 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 61.48.+c; 78.30.Na; 82.45.+z
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Chemical doping of single-wall carbon nanohorns (SWNHs) with K and Br was examined by vapor-phase reaction and studied by Raman scattering. Electro-chemical Li-ion doping using an electrolyte of LiAsF6 in a mixture (1:1 by volume) of ethylene carbonate and diethyl carbonate was also carried out. All these experiments indicate that an anomalously small charge transfer occurs in saturation-doped SWNHs using these reagents, in sharp contrast to the behavior observed for single-wall carbon nanotube bundles and graphite. This rather remarkable result is not understood at present.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390000681
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  • 5
    Electronic Resource
    Electronic Resource
    Electron Irradiation Effects in Silicon Thin Foils Under Ultra-High Vacuum Environment (1997)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 258-263 (Dec. 1997), p. 553-558 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/03/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.258-263.553.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Structural studies by high-resolution electron microscopy: tetragonal tungsten bronze-type structures in the system Nb2O5–WO3 (1974)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 30 (1974), S. 22-29 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The contrast in many-beam lattice images from very thin crystals of 4Nb2O5. 9WO3 is shown to be directly related to its known structure. On the basis of this correlation, the structure of 2Nb2O5.7WO3 is derived from the observed image contrast; it is an ordered intergrowth of the ReO3 and tetragonal tungsten bronze structural types. The structures of typical fault boundaries and disordered intergrowths are described, and those of the reported compounds 6Nb2O3. 11WO3 and 3Nb2O5.8WO3 are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739474000039
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  • 7
    Electronic Resource
    Electronic Resource
    Structural studies by electron microscopy: coherent intergrowth of the ReO3 and tetragonal tungsten bronze structure types in the system Nb2O5–WO3 (1974)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 30 (1974), S. 29-36 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: High-resolution lattice images from WO3-rich compositions in the system Nb2O5-WO3 contain direct evidence for the coherent intergrowth of extensive domains of several orientations of the ReO3-type structure with the more complex tetragonal tungsten bronze-type structure. A model for the transformation between the two structure types is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739474000040
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  • 8
    Electronic Resource
    Electronic Resource
    High-resolution electron microscopy of McGillite. II. Polytypism and disorder (1982)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 38 (1982), S. 695-702 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A new series of polytypes of a sheet silicate mineral, mcGillite, has been found using high-resolution electron microscopy. Their crystal structures are described in terms of the stacking sequence of the one-layer monoclinic structure [Iijima (1982) Acta Cryst. A38, 685-694]. Multiplicity of the polytypes results from regular occurrences of the 120° rotation twinning on the basal (001) plane. The two- and three-layer polytypes found in the present study are both monoclinic and are different from two-layer schallerite and three-layer friedelite, belonging to the family of manganpyrosmalite and being reported as trigonal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739482001405
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  • 9
    Electronic Resource
    Electronic Resource
    Direct observation of lattice defects in H-Nb2O5 by high resolution electron microscopy (1973)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 29 (1973), S. 18-24 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Detailed two-dimensional lattice images, showing metal-atom positions in crystals of H-Nb2O5 quenched from the melt have been observed using a sophisticated electron microscope in both ordered and heavily disordered regions. The blocks in the structure were well ordered along the b axis, but heavily disordered in the ac plane; the sub-cell structure of ReO3 was still perfectly retained. Four kinds of planar defects, oriented parallel to low-index planes in the host structure, were revealed in the ordered region. Some of these planar defects produce non-stoichiometry. A new polymorph of Nb2O5, having the same structure as PNb9O25, was found in one of the defect structures, and several other new phases of Nb2O5 were observed in the heavily disordered region. Incoherently packed blocks and unusual-size blocks played an important role as one of possible origins of the defect planes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739473000045
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  • 10
    Electronic Resource
    Electronic Resource
    Direct observation of point defects in Nb12O29 by high-resolution electron microscopy (1973)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 29 (1973), S. 632-636 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Point defects have been observed directly in non-stoichiometric niobium oxides, Nb12O29, by high- resolution electron microscopy at a resolution of 3-4 Å. A proposed model for the point defect is a complex composed of two interstitial metal atoms and two interstitial oxygen atoms. Observations have been made on the annealing out of these defects under electron irradiation. Evidence on the density of these defects offers a semi-quantitative explanation of how the non-stoichiometric oxygen excess in these oxides is accommodated in the matrix structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739473001610
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