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  • 1
    Electronic Resource
    Electronic Resource
    Calcineurin in human brain and its relation to extrapyramidal system (1986)
    Springer
    Acta neuropathologica 72 (1986), S. 150-156 
    Details
    ISSN: 1432-0533
    Keywords: Calcineurin ; Huntigton's disease ; Human brain ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Calcineurin immunoreactivity has been successfully detected in formalin-fixed paraffinembedded postmortem human brain tissue using the peroxidase-antiperoxidase method. We have examined two autopsy cases with Huntigton's disease (HD), three cases with Parkinson's disease, and two senile patients as controls. In the controls, calcineurin immunoreactivity was present in neuronal cells only and highly concentrated in the caudate nucleus, putamen, globus pallidus (striato-pallidal pathway), substantia nigra (striato-nigral pathway) and hippocampal formation. These localizations were similar to those identified in rat brain. There was a marked depletion of neurons containing calcineurin in the caudate nucleus and putamen, and a marked reduction of calcineurin-immunoreactive nerve fibers in the globus pallidus and substantia nigra were found in the cases with HD, but not in those with Parkinson's disease. These findings suggest that calcineurin can be a useful and specific index of neuronal degeneration in the caudato-putamen resulting from extrapyramidal diesease, and that the calcineurin-immunostaining method can be a valuable tool for clarifying the anatomy of the human extrapyramidal system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00685977
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  • 2
    Electronic Resource
    Electronic Resource
    Development of a beam probing system for measurement of density, temperature, and magnetic field of RFP plasma (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 530-535 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A hydrogen beam probing system developed for the REPUTE-1 reversed field pinch device is described. With this system, the plasma ion line density, the central ion temperature, and the magnetic field profile can be measured. Before being applied to the REPUTE-1 device, the probing system was tested on the TORIUT-5 tokamak and TORIUT-6 ultralow-q (ULQ) devices. The experimental results show the availability of the system. The measured line density agrees well with that measured by the microwave interferometry. The measurable density ranges from 1019 m−3 to 3×1020 m−3. A new method of magnetic field measurement which is effective and important for RFP plasmas is proposed. The resolution and the accuracy of this measurement have been confirmed by experiments on the TORIUT-5 device. Experimental results agree well with computation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139264
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  • 3
    Electronic Resource
    Electronic Resource
    In situ observation by ultrahigh vacuum reflection electron microscopy of terrace formation processes on (100) silicon surfaces during annealing (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1400-1402 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Formation processes of terraces on (100) silicon surfaces during annealing at 1000 °C were observed in situ by ultrahigh vacuum reflection electron microscopy. Terraces were formed on staircases made up of monoatomic steps, preferentially at the sites where stairs were larger than average. The sites are formed by surface undulation. It was found that the terrace grew, or extended, in both up-step and down-step directions almost at equal rates. The terrace thus grew not by sublimation, but by adhesion and removal of atoms at respective terrace edges. Thus, the interlayer migration of adatoms plays an important role in the terrace growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101606
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  • 4
    Electronic Resource
    Electronic Resource
    Electrical and photoadsorptive properties of valence-controlled .alpha.-iron hydroxide oxide (1989)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 93 (1989), S. 1988-1992 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100342a056
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  • 5
    Electronic Resource
    Electronic Resource
    Spontaneous formation of magnetohydrodynamic equilibrium profiles: Tokamaks, reversed-field pinches, and their intermediates (1987)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 2465-2469 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The spontaneous formation of magnetohydrodynamic (MHD) equilibrium profiles in toroidal current-carrying plasmas has been discussed for tokamaks, reversed-field pinches (RFP's), and also for their intermediate states ultra-low q's (ULQ's). The significance of m (poloidal mode number)=1 fluctuations causing a shift of the magnetic axis is stressed. The characteristics of MHD relaxation have been studied in comparison with classical diffusion. The dynamics of ULQ's is shown to illustrate the characteristics of both dissipative processes. A global-mode stable ULQ is observed to be produced through MHD relaxation, and then to be deformed, in a longer time scale, by classical diffusion which destabilizes the stable profile.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866085
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  • 6
    Electronic Resource
    Electronic Resource
    Analysis of scanning deep level transient spectroscopy (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 1617-1619 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Fundamental processes such as charge generation, trapping and emission, and collection in scanning deep level transient spectroscopy (SDLTS) are analyzed. It is concluded that SDLTS is more sensitive to minority-carrier traps than to majority-carrier traps and that a two-dimensional map of SDLTS peak signal magnitude, i.e., SDLTS image, of minority-carrier traps does not necessarily show the trap concentration distribution. A practical equation for trap concentration is derived by utilizing an electron beam induced current. Concentration of a hole trap with an activation energy 0.45 eV in an n-type as-grown liquid encapsulated Czochralski GaAs is calculated to be 1×1016 cm−3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98573
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  • 7
    Electronic Resource
    Electronic Resource
    In situ observation of molecular beam epitaxy of GaAs and AlGaAs under deficient As4 flux by scanning reflection electron microscopy (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 622-624 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The initial stages of molecular beam epitaxial (MBE) growth of GaAs and AlGaAs are directly observed by scanning reflection electron microscopy. Under deficient As4 flux, it is shown that dark areas appear within several layers of growth, but disappear within several seconds of growth interruption, indicating that they are droplets of Ga and Al. The distance between the droplets is approximately 1 μm, which is identical in GaAs and AlGaAs growth. Thus, the diffusion length of Ga and Al on a group III-rich surface at around 600 °C is estimated to be about 5000 A(ring), which is the largest among previous reports. The role of droplet disappearance in interface flattening in alternating supply MBE is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101829
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  • 8
    Electronic Resource
    Electronic Resource
    Rapid rate of ion milling for the highT c YBa2Cu3O7−y system (1988)
    Springer
    Journal of materials science 7 (1988), S. 281-282 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01730198
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  • 9
    Electronic Resource
    Electronic Resource
    A comparative immunohistochemical study of calcineurin and S-100 protein in mammalian and avian brains (1988)
    Springer
    Experimental brain research 69 (1988), S. 645-650 
    Details
    ISSN: 1432-1106
    Keywords: S-100 protein ; Calcineurin ; Mammalian brain ; Avian brain ; Vertebrate brain ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The cellular and topographic localization of calcineurin and S-100 protein was examined immunohistochemically in the mammalian and avian brain. Calcineurin immunoreactivity in both the avian and mammalian brain was located only in neuronal cells. S-100 protein was localized mainly in the glial and Schwann cells within the mammalian brain. However, in the avian brain, neuronal cells in certain regions such as the paleostriatum primitivum and the cerebellum, as well as other non-neuronal cells, exhibited S-100 protein immunoreactivity. A distinct difference was demonstrated in the macroscopic topographic distribution patterns of S-100 protein immunoreactivity between the mammalian and avian brains, while the patterns of calcineurin distribution were essentially identical. In addition, we provided calcineurin- and S-100 protein-immunocytochemical results for the turtle, frog and fish brain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00247316
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  • 10
    Electronic Resource
    Electronic Resource
    A histological comparison of the tissue interface of bioglass and silica glass (1987)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 21 (1987), S. 485-497 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The objectives of the present article are to confirm the bone bonding phenomenon of Bioglass (BG) developed by Hench et al., and to observe the singularity of tissue reaction to it. BG and nonreactive silica glass (SG) were implanted in the femurs of rabbits and rats. Histological examination revealed that a relatively acellular zone with little inflammation was formed on BG surface at 1 day after implantation. Neither fibrous tissue nor a distinct boundary was observed between BG and bone after 7 days. On the contrary, a moderate post-operative inflammatory reaction was observed on SG at 1 day, and fibrous tissue was observed between SG and bone after 7 days. From these findings, it was confirmed that BG bonded directly with bone. As the relatively acellular zone observed on BG surface at 1 day was replaced by bone after 7 days, the formation of this zone might play an important role in bone-bonding process. Further research should be focused on the mechanism and biological meaning of bone bonding, for this phenomenon can not be explained by the conventional pathological theory of foreign body encapsulation.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820210408
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