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  • 1
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of 3.5 keV electron irradiation on adhesion and contact resistivity of the Ag/YBa2Cu3O7 interface has been studied using an evaporated silver layer on c-axis oriented superconducting YBa2Cu3O7 thin films. Electron doses ranged between 1016 and 1018 electrons/cm2. The Q-tip method of adhesion testing showed that even at the lowest electron dose adhesion is significantly improved. The contact resistivity of the interface was measured using a cross-junction four-point probe. Contact resistivity was unchanged at the lowest electron dose but increased as the electron dose increased. A theoretical model involving an electron irradiation damaged layer at the interface has been developed to explain measured contact resistivity changes. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 6858-6860 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electron-stimulated desorption of positive and negative oxygen ions from YBa2Cu3O7 surfaces has been studied as a function of electron kinetic energy in the 70–600 eV range. It has been found that the threshold electron kinetic energy needed to induce positive oxygen ion desorption occurs at 260±5 eV, whereas that associated with negative oxygen ion desorption was found to be 100±5 eV. These electron kinetic energies correspond to Cu, Y, and Ba core-level binding energies. These results suggest that negative and positive oxygen ion desorption may be initiated via a primary core level ionization. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 5687-5694 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The composition, distribution, and chemical bonding of tungsten-implanted glassy carbon have been studied for ion doses between 3.5×1014 and 1.5×1017 ions/cm2. The implantations were performed using a metal-vapor vacuum arc ion source which for an extraction potential of 20 kV yields a mean implant energy of 60 keV. The implanted layer was examined by Rutherford backscattering spectrometry and Auger profiling spectroscopy. In addition, volume effects were assessed by measuring the step height between implanted and unimplanted regions. It has been established that the implanted tungsten is bonded in a carbidic configuration. This is in agreement with thermodynamic data which favors carbide formation rather than separate phases of metallic tungsten and graphitic carbon. For the highest dose studied, 1.5×1017 ions/cm2, the tungsten distribution was found to be nearly constant near the surface followed by a decrease at larger depths. For ion doses up to 3.6×1016 ions/cm2, the maximum tungsten distribution was found to occur at a depth 300±100 A(ring) and the implanted and retained doses were found to be equal. For tungsten ion doses between 7.35×1014 and 1×1016 ions/cm2, the implanted region was found to be compacted by 300±100 A(ring). The latter is attributed to an irradiation-induced densification of glassy carbon from 1.5 to 2.1 g/cm3. This compaction effect is also found to occur upon C+ (30 keV) implantation for ion doses between 3×1016 and 1.3×1017 ions/cm2. In this case the implanted layer was compacted by 400±100 A(ring). For higher tungsten doses, a steep increase in compaction of the tungsten implanted layer was observed. This is attributed to chemical and sputtering effects.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 76 (1969), S. 0 
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 81 (1974), S. 0 
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Studies have been undertaken to determine whether the insulin response to intravenous glucose in a group of 20 to 24 week pregnant, potentially diabetic, women might be useful in the detection of those whose babies will be large. The investigation confirmed that glucose tolerance alone is not a good discriminant. Measurement of the first phase of insulin release, when corrected for the increased insulin release associated with maternal obesity, is a better discriminant. Other factors, including maternal obesity, contribute to the production of a large baby.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 77 (1970), S. 0 
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A carefully defined group of postmature and mature fetuses have been compared by determining acid-base status, and blood gas, haematocrit values and glucose levels during labour and at delivery.The haematocrit value was the only parameter in which significant differences between the groups were found. These were not related to fetal oxygenation but to probable differences in hydration.No justification was found for the view that the postmature fetus is more liable to hypoxia before or during labour than its mature counterpart.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1434-0879
    Keywords: Neutron activation analysis ; stone formers ; bendrofluazide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Whole body elemental compostion was measured by in vivo neutron activation analysis before and after treatment of urinary stoneformers with bendrofluazide for 6 months. There was no significant change in whole body calcium, sodium, nitrogen or body weight. There were significant reductions in whole body potassium (6%), chlorine (7.3%) and phosphorus (1.5%).
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Urological research 4 (1976), S. 147-150 
    ISSN: 1434-0879
    Keywords: Bladder tumours ; ABH secretor status ; Genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The ABO blood groups and secretor status of a group of patients with bladder tumours were investigated and compared with those of a group of patients of a similar age suffering from a variety of genito-urinary diseases. Some of the control patients were known to have been exposed to potential carcinogens, and the findings in this group were analysed separately. No significant differences were found when comparisons of these three groups of patients were made.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Urological research 7 (1979), S. 285-289 
    ISSN: 1434-0879
    Keywords: Cadmium ; Iron ; Bendrofluazide ; Hypercalciuria Hyperzincuria ; Treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cadmium induces a variety of effects on kidney tubules including hypercalciuria. This is accompanied by hyperzincuria. The present work shows that both of these biochemical abnormalities can be corrected but where a state of cadmium-induced-anaemia exists urine zinc and calcium excretion do not follow the expected parallel course in response to iron therapy as they do with bendrofluazide.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 24 (1996), S. 293-305 
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Small additions of nickel chloride to salt solution significantly reduce the corrosion of aluminium alloys. Films produced in these solutions produce a microrough topography which may be suitable for adhesive bonding. Techniques such as XPS, SEM, FTIR and SIMS were used to investigate the properties of the films. The results established that nickel is incorporated in the outer layer of a hydrated aluminium oxide film and is responsible for altering the film growth mechanism. Boeing wedge tests were conducted to assess the relative durability of bonds with adherends pretreated in the salt solutions. The durability performance of the film as a surface treatment for adhesive bonding compared favourably with the Forest Products Laboratory chromate etch. A comparison of the nickel salt treatment with a sodium chloride solution treatment indicated that durability differences were related to their respective hydrated oxide structures.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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