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  • 1
    Electronic Resource
    Electronic Resource
    Preparation of giant magnetostrictive thin film by magnetron and ion beam sputtering processes : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 996-998 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Thin films of giant magnetostrictive materials were formed by dc magnetron sputtering and ion beam sputtering processes. A systematic investigation was made to examine the effect of these deposition processes on the magnetic properties and magnetostriction of TbFe2 and (Tb, Dy)Fe2 thin films. The magnetostriction of the films formed by dc sputtering was in the range from 200 to 400 ppm at a magnetic field H=15 kOe, whereas the films formed by the ion beam sputtering exhibited a slightly higher magnetostriction. For both processes, the increase in Ar partial pressure in the deposition processes strongly changed magnetic anisotropy from perpendicular to in plane, and increased magnetostriction and magnetostrictive response at low magnetic fields. However, the mixture of Xe gas into Ar gas in the dc sputtering lowered magnetization and gave almost no effect on magnetic anisotropy. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150370
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  • 2
    Electronic Resource
    Electronic Resource
    MgO thin film formation by ion enhanced deposition processes : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 999-1001 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: MgO thin films were prepared by ion plating systems and by an ion beam sputtering system with a plasma filament type ion source. Triode-type and rf ion plating processes were employed. MgO films were prepared with various oxygen partial pressures ranging from 10−3 to 10−2 Pa. In the triode-type ion plating process, the MgO(200) was the preferred growth orientation of film. In the rf ion plating process, MgO(111) and (220) reflection peaks appeared in the x-ray diffraction patterns of films. The films were transparent, and those values of transmittance of ultraviolet region were increased as increasing oxygen partial pressure. In the ion beam sputtering process, the film showed amorphous structure and low transmittance. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150371
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  • 3
    Electronic Resource
    Electronic Resource
    A case of erythrokeratoderma variabilis without mutations in connexin 31 (2000)
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 143 (2000), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Erythrokeratoderma (EK) variabilis is a heterogeneous group of diseases characterized by migratory erythematous patches and hyperkeratotic plaques. Mutations in connexin 31 have recently been found to underlie several cases of EK variabilis. We describe a Japanese girl with extensive lesions that appeared to be a form of EK variabilis, clinically resembling genodermatose en cocardes (Degos). Our patient had characteristic migratory rosette or target-like erythematous keratotic plaques with peripheral scaling in addition to relatively fixed keratotic plaques. Sequencing of the connexin 31 gene did not detect mutations. Skin biopsy showed parakeratotic hyperkeratosis with hypergranulosis. Immunohistochemically, suprabasal keratins, involucrin and profilaggrin were unequivocally expressed, while loricrin expression was greatly diminished and deiminated K1 was undetectable. Our results confirm aetiological heterogeneity in EK. The histological features suggest disruption of keratinocyte terminal differentiation at a very late stage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2133.2000.03902.x
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  • 4
    Electronic Resource
    Electronic Resource
    The interaction between platinum films and silicon substrates: Effects of substrate bias during sputtering deposition (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 1679-1683 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The reactions between platinum and silicon, both during platinum deposition at elevated temperature and during a thermal annealing process, have been investigated using x-ray diffraction, cross-sectional transmission electron microscopy, and x-ray photoelectron spectroscopy. It has been found that sputtering deposition of platinum on a silicon substrate at 200 °C results in the formation of PtSi at the Pt–Si interface. But the reaction cannot fully proceed at this temperature for a platinum film with a thickness of 35 nm. Further annealing at 450 °C causes the platinum film to transform to PtSi completely. A substrate bias of −90 V during sputtering deposition leads to the formation of platinum films with larger columnar grains, instead of finer grains as being formed without substrate bias. In such a case, oxygen diffusion toward the interface was enhanced through the boundaries of these columnar grains, and this results in an accumulation of oxygen and oxide formation at the interface. As a result, the reaction between platinum and silicon was inhibited during the further annealing process for the Pt/Si films deposited with substrate bias. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373871
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  • 5
    Electronic Resource
    Electronic Resource
    Internet-based program for automatic discrimination of dermoscopic images between melanomas and Clark naevi (2004)
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 150 (2004), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.2004.05942.x
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  • 6
    Electronic Resource
    Electronic Resource
    Involvement of urban living environments in atopy and enhanced eosinophil activity: potential risk factors of airway allergic symptoms (2001)
    Copenhagen : Munksgaard International Publishers
    Allergy 56 (2001), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: Airway allergic diseases, such as bronchial asthma and allergic rhinitis, have increased, especially in urban areas. These diseases are characterized by airway inflammation with enhanced eosinophil activity, and the risk of disease development has been shown to increase with the prevalence of atopy. Methods: Questionnaires were administered to 426 healthy adult women aged 30–74 years, living in an urban area of Osaka, Japan, to survey individual living environments and airway allergic symptoms such as cough, sputum, and wheezing. Moreover, serum house-dust-mite (Dermatophagoides pteronyssinus, [Der p])-specific immunoglobulin E (IgE) and serum eosinophil cationic protein (ECP) were examined by radioimmunoassay, and the atopic status (atopic sensitization) and enhanced eosinophil activity were assessed as Der p-specific IgE RAST scores of 2–6 and ECP levels of more than 10 ng/ml, respectively. Results: Intensive use of electric air conditioners in hot weather (odds ratio: 2.07 [95% CI: 1.11–3.87]) and mold proliferation in the kitchen (2.77 [1.34–5.73]) significantly increased the risk of atopic sensitization. Poor home ventilation and family smoking appeared to be positively but not significantly associated with atopic sensitization. Personal smoking and intensive use of the air conditioner appeared to be positively related to enhanced eosinophil activity. Atopic status showed significant involvement in the development of wheezing, and the development of cough was significantly associated with enhanced eosinophil activity. Conclusions: The results suggest that some urban styles of living are involved in atopic sensitization and enhanced eosinophil activity in the Japanese urban population, probably due to living conditions, such as indoor dampness and poor home ventilation, caused by tight insulation, which increase exposure to indoor air pollutants, such as respirable mite allergens and tobacco smoke.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1398-9995.2001.056003224.x
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  • 7
    Electronic Resource
    Electronic Resource
    C-terminal α-synuclein immunoreactivity in structures other than Lewy bodies in neurodegenerative disorders (2000)
    Springer
    Acta neuropathologica 99 (2000), S. 296-304 
    Details
    ISSN: 1432-0533
    Keywords: Key wordsα Synuclein ; Proteinase K ; Progressive ¶supranuclear palsy ; Corticobasal degeneration ; Non-amyloid β component
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract α-Synuclein is a presynaptic terminal protein that accumulates abnormally in plaques in Alzheimer’s disease (AD), in Lewy bodies in Lewy body disease (LBD) and in filamentous inclusions in multiple system atrophy. Since it has been previously shown that proteinase K or formic acid pretreatment enhances α-synuclein immunoreactivity in Lewy bodies and plaques, we hypothesized that the immunoreactivity in tangles, glial cells and Pick bodies might be revealed by such pretreatment. Brain sections from patients with AD, LBD, progressive supranuclear palsy (PSP), corticobasal degeneration (CBD) and Pick’s disease were pretreated with proteinase K or formic acid and immunostained with antibodies against the N-terminal, C-terminal or non-amyloid β component of AD amyloid (NAC) regions of α-synuclein. This study showed that after proteinase K (but not formic acid) pretreatment the anti-C terminus antibody immunostained neurofibrillary tangles of AD, PSP and CBD, and glial inclusions of PSP and CBD, as well as Pick bodies. Western blot analysis confirmed that in cases other than LBD, the anti-C terminus antibodies also recognized the native α-synuclein band and no cross-reactive bands were observed. In contrast, in LBD, after formic acid pretreatment with the anti-NAC antibody astroglial cells and granular neurons were immunostained. The N-terminal region antibody only recognized the lesions in LBD cases and not those of other neurodegenerative disorders. These results support the view that different fragments of α-synuclein might play an important role in the pathogenesis of several neurodegenerative disorders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00007441
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  • 8
    Electronic Resource
    Electronic Resource
    Microstructure, microhardness, composition, and corrosive properties of stainless steel 304 II. Low-pressure laser spraying with silicon. (2000)
    Springer
    Applied physics 70 (2000), S. 651-656 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 81.15.FG; 81.15.Rs; 81.65.Kn
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Clad layers of silicon on a SUS 304 substrate were obtained by low-pressure laser spraying (LPLS) to investigate their microstructure, microhardness, composition, and corrosive properties. When an impinged energy density was adjusted to be 32 to 95 W mm-2, the silicon concentration of the surface of clad layers was estimated as 5 to 8 wt.%. For as-prepared layers, their crystal structure was a single phase of alpha-ferrite with no distinct corrosion resistance, because partially segregated Si atoms along the grain boundaries and inside the grains were selectively dissolved in the etching process. After solution-annealing for 2 h, the corrosion resistance was greatly improved in hydrochloric acid solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050009
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  • 9
    Electronic Resource
    Electronic Resource
    Microstructure, microhardness, composition, and corrosive properties of stainless steel 304 I. Laser surface alloying with silicon by beam-oscillating method. (2000)
    Springer
    Applied physics 70 (2000), S. 395-402 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 81.15.FG; 61.82.Bg; 81.65.Kn
    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 surface alloying (LSA) with silicon was conducted on austenitic stainless steel 304. Silicon slurry composed of silicon particle of 5 μm in average diameter was made and a uniform layer was supplied on the substrate stainless steel. The surface was melted with beam-oscillated carbon dioxide laser and then LSA layers of 0.4–1.2 mm in thickness were obtained. When an impinged energy density was adjusted to be equal to or lower than 100 W mm−2, LSA layers retained rapidly solidified microstructure with dispersed cracks. In these samples, Fe3Si was detected and the concentration of Si in LSA layer was estimated to be 10.5 wt.% maximum. When the energy density was equal to or greater than 147 W mm−2, cellular grained structure with no crack was formed. No iron silicate was observed and alpha iron content in LSA layers increased. Si concentration within LSA layers was estimated to be 5 to 9 wt.% on average. Crack-free as-deposited samples exhibited no distinct corrosion resistance. The segregation of Si was confirmed along the grain boundaries and inside the grains. The microstructure of these samples changed with solution-annealing and the corrosion resistance was fairly improved with the time period of solution-annealing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051055
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