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  • 1
    Electronic Resource
    Electronic Resource
    Giant magnetoresistance and superparamagnetic grains in Co–Ag granular films (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 764-771 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Co–Ag granular films having various Co grain sizes are prepared by rf sputtering under various sputtering conditions. The Co grain sizes are derived from the magnetization curves by dividing them into ferromagnetic and superparamagnetic components. As the Co content decreases, the radii of the superparamagnetic Co grains, rg, decrease and the distances between the Co grains, tg, increase. The magnetoresistance is proportional to the volume density of superparamagnetic grains or related to krg3 exp(−tg/l) with k=3.8×102 μΩ/cm2 and l=20 Å, implying that the giant magnetoresistance is caused by the spin-dependent scattering in the inner part of the superparamagnetic Co grains as well as at the grain surfaces. Furthermore, it is found that the extraordinary Hall effect arises mainly from the side jump mechanism, and that significant perpendicular magnetic anisotropy appears in the Co composition range between 40 and 70 at %. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.365770
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  • 2
    Electronic Resource
    Electronic Resource
    Comparisons of modalities of mechanical stimulation with a toothbrush on improvement of oxygen sufficiency in dog gingiva (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of clinical periodontology 24 (1997), S. 0 
    Details
    ISSN: 1600-051X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract Mechanical stimulation with a toothbrush was applied to each quadrant of 10 dogs at a force of 200 g for 10 s using following modalities: vibration at attached gingiva. pressurization at attached gingiva. vibration at marginal gingiva and no treatment as a control. Hemoglobin oxygen saturation (SO2) in the gingiva was measured by non-invasive tissue reflectance spectrophotometry. Simultaneously, oxygen tension (PO2) in gingival tissue was monitored with an oxygen microelectrode. Both SO2 and PO2 increased within 10–20 min after stimulation and then slowly returned to the initial level at all treatment sites. The response was most prominent after vibration at attached gingiva. SO2 and PO2 increased by 12% and 42%. respectively, and significant increase continued for 75–85 min. Response after vibration at marginal gingiva was moderate in PO2 and transient in SO2. Pressurization at attached gingiva caused moderate response in SO2. but the increase in PO2 was slight. Control showed little change in both indices. These results suggest that vibration with a toothbrush at attached gingiva may cause a maximal response in improving oxygen sufficiency to gingival tissue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-051X.1997.tb00240.x
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  • 3
    Electronic Resource
    Electronic Resource
    Normal recovery of the stratum corneum barrier function following damage induced by tape stripping in patients with atopic dermatitis (1997)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 136 (1997), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Patients with atopic dermatitis (AD) constantly inflict mechanical damage to their skin by scratching induced by pruritus. On excoriated lesions of the cheek we found exceedingly high levels of transepidermal water loss (TEWL) as compared to those in the normal skin of healthy subjects. However, it is not clear whether the skin of patients with AD also shows an abnormally slow recovery after mechanical damage. We compared the recovery of the barrier function of the stratum corneum (SC). after its complete removal by tape stripping, in patients with AD and age-matched healthy control subjects. On the normal-looking skin of the flexor forearm, we found no difference in the recovery process of the water barrier function of the SC between the two groups. This suggests that ability to reconstruct SC barrier function after mechanical damage is not impaired in AD patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2133.1997.01821.x
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  • 4
    Electronic Resource
    Electronic Resource
    Magnetic and magnetotransport properties of new III-V diluted magnetic semiconductors: GaMnAs : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 4865-4867 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied magnetic and magnetotransport properties of novel III-V diluted magnetic semiconductors, (Ga1−xMnx)As. The GaMnAs thin films were grown on GaAs(001) substrates by low temperature molecular beam epitaxy. We present magnetoresistance, extraordinary Hall effect, and M–H characteristics of two (Ga1−xMnx)As samples having different Mn content x. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364859
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  • 5
    Electronic Resource
    Electronic Resource
    Unerupted canine without median diastema (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 24 (1997), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary The eruption of the canine is known to be a factor for diastema closure. In this study the relative changes in the orientation of the unerupted canine were assessed using the orthopantomographs of 9854 patients who sought consultation between April 1984 and March 1993. A total of 38 canines in 32 patients, all aged 11 years or older, were identified as unerupted canines. The features of the patients with unerupted canine showed no significant relation to diastema closure status, but some patients had unerupted horizontal or inverted canine without diastema even in the absence of a history of orthodontic treatment, suggesting the presence of a mechanical force due to some phenomenon other than canine eruption as a factor in diastema closure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1997.tb00356.x
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  • 6
    Electronic Resource
    Electronic Resource
    Locally Modulated Structures of Fluorite-Related Y2O3–Nb2O5 Solid Solutions (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 30 (1997), S. 272-279 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Modulated structures formed in defect fluorite-type (Y2O3)1 − x(Nb2O5)x (0.21 ≤ x ≤ 0.27) solid solutions have been investigated by electron diffraction. [1{\bar 1}0] diffraction patterns showed a pair of diffuse spots in the [11{\bar 2}] direction at both sides of the ½½½ reciprocal-lattice point. The distance between the diffuse spots decreased from 0.064 to 0.045 Å−1 with increasing x from 0.21 to 0.27. High-resolution electron microscopy images revealed the existence of small domains with an antiphase structure. The two-dimensional antiphase structure projected on the (1{\bar 1}0) plane is described by compositional waves of Y3+/Nb5+ and O2−/vacancy and displacive waves of Y3+ + Nb5+ and O2− along the [11{\bar 2}] direction. The composition at cation sites is expressed by a sinusoidal wave with occupation changes between Y and 0.58Y + 0.42Nb. The occupational probability of O at anion sites is also expressed by a sinusoidal wave with occupation changes between 0.806 and 0.904. Amplitudes of the displacive waves for anions and cations were determined to be about 0.3 and 0.02 Å, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889896013283
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  • 7
    Electronic Resource
    Electronic Resource
    Partial Reversion of Small GP Zones in an Al–Zn Binary Alloy (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 30 (1997), S. 592-596 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The reversion process of very small Guinier-Preston (GP) zones in Al–Zn binary alloys has been studied by time-resolved synchrotron-radiation small-angle X-ray scattering (SR-SAXS) measurements. Al–15 at.% Zn alloys with GP zones of 1.0 to 1.3 nm in radius formed by aging at 274 K were up-quenched up to 463 K. During reversion, the Guinier radius increased rapidly while the integrated intensity decreased. This rapid increase of the radius was completely different from what was found during the reversion of larger GP zones above the miscibility gap. It is concluded that a process of simultaneous dissolution and coarsening has been observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889897001374
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of radiotherapy on anorectal function in patients with cervical cancer (1997)
    Springer
    Diseases of the colon & rectum 40 (1997), S. 1298-1298 
    Details
    ISSN: 1530-0358
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02050812
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  • 9
    Electronic Resource
    Electronic Resource
    Methylation of pyridin-2-one with methanol over γ-alumina in vapor phase (1997)
    Springer
    Catalysis letters 46 (1997), S. 123-126 
    Details
    ISSN: 1572-879X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Pyridin-2-one reacts with methanol over γ-alumina in the vapor phase to afford exclusively 1-methylpyridin-2-one. Thus, 1-methylpyridin-2-one was obtained in a 99% selectivity at a 100% conversion at 573 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019037628139
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  • 10
    Electronic Resource
    Electronic Resource
    Fractal Dimension of Fracture Surface Profiles in an Austenite Steel Fatigued by Repeated Bending (1997)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 145-149 (Oct. 1997), p. 107-112 
    Details
    ISSN: 1013-9826
    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/2011/0528/01/44/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.145-149.107.pdf
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