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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 5837-5839 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The formation of amorphous diamondlike films by deposition of energetic carbon atoms is modeled. Formation of diamondlike bonding is attributed to transient high pressure created by the ion impact. The relaxation to energetically favored graphitic state is assumed to proceed through succession of metastable states, taking place until the glass transition point is reached. The model illustrates from the new point of view the processes involved in the formation of diamondlike films. It predicts qualitatively similar dependence of film properties on the energy of the incoming carbon atoms as observed in experiments. © 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 79 (1996), S. 8712-8716 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The influence of interference on the shape of Raman spectra from thin films is considered. High refractive index, low absorption and sufficient film thickness combined with high reflection from a substrate surface are the conditions to enhance the interference distortion of the Raman spectra. In the case of an amorphous hydrogen-free diamondlike carbon film deposited onto a highly reflecting aluminum layer, the interference dramatically distorts the ratio of Raman intensities at 500 and 1550 cm−1, by about a factor of four when the spectra are registered by using a conventional backscattering geometry. The effect is smaller but clearly noticeable for ordinary silicon-substrate samples as well. The magnitude of the interference modification is strongly influenced by geometrical factors such as the direction and polarization of the detected Raman scattered light. © 1996 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 84 (1998), S. 1796-1799 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Cross sections for elastic scattering of protons by natural copper, molybdenum, silver and tin have been measured in the energy range of 2.3–6.5 MeV at typical Rutherford backscattering angles of 135° and 165°. The threshold energies have been determined above which the Rutherford cross sections become invalid. The threshold energies obtained are 3.5 and 3.4 MeV for copper, 5.1 and 5.0 MeV for molybdenum, 5.0 and 5.8 MeV for silver, and 6.1 and 6.2 MeV for tin at angles of 135° and 165°, respectively. Resonances or the rapid decrease of the cross sections above the thresholds render practical proton backscattering analysis impossible. A literature survey has been carried out to compile relevant energy threshold data for the present target mass and scattering angle regions. Considerable experimental and theoretical interest has recently been focused at the non-Rutherford cross sections. Comparing the experimental non-Rutherford threshold energies with theoretical calculations, we find the data clearly exceeding the predictions of simple classical formulations, while the optical model approach yields more realistic threshold energy values. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 1153-1158 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Mobility of sodium in SrS-based electroluminescent thin film stacks grown by atomic layer epitaxy was studied in the temperature range 600–850 °C using ion implantation for doping and nuclear resonance broadening for profiling of sodium. The crystallinity and orientation of SrS and SrS:Ce films were studied using wide angle x-ray scattering (WAXS). It was found that sodium diffuses rapidly to the interfaces between SrS and upper and lower Al2O3 insulators. These insulators act effectively as diffusion barriers for sodium up to a temperature of about 700 °C. In the case of SrS:Ce films, even after annealing at high temperatures for long times, the Na concentration in the bulk of the film remained in the range 0.4–0.6 at. % which is about two to three times the concentration of Ce. WAXS measurements revealed the preferred [111] orientation of SrS and SrS:Ce films with an average size of crystallites ≥120 nm. It turned out that annealing for a few hours at about 700–750 °C was needed to recover the implantation damage and restore the crystallinity of SrS to its original level. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of medicine & science in sports 5 (1995), S. 0 
    ISSN: 1600-0838
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Sports Science
    Notes: Ten young beagle dogs were run on a treadmill for 1 year, the last 15 weeks 40 km/day. Thereafter bone anthropometric variables, elemental composition, mineral density (BMD) and serum markers of bone metabolism were analyzed and compared with matched-paired control dogs. More osteophytes developed, weight-bearing bones grew larger and BMD of axial skeleton was reduced in the trained group. Zinc and sodium accumulated in bones of the runners. Zinc correlated negatively with BMD. Serum osteocalcin and C-terminal propeptide of type I procollagen did not correlate with the observed differences in BMD. This experiment implies that intensive endurance training in adolescence may reduce the peak bone mass and alter the structural properties of bone.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 488-490 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Atomic scale simulations are performed for the ion bombardment induced roughening of the amorphous diamond films, when the films are deposited by using kiloelectronvolt mass separated ion beams operated in the upper limit of practical deposition energies up to 20 keV. The results show that the roughness due to sputtering erosion is by a factor of 3 to 4 larger than roughness observed in experiments. The experimentally observed roughness is obtained only when moderate surface relaxation within the distance of next nearest neighbors is included in the simulations. The results suggest that atomic scale relaxation of sputtering induced topography occurs during the deposition. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 14 (1987), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The periodontal conditions of subjects with different combinations of removable dentures were studied in a representative sample of 8000 subjects, of which 90% were used for the experiment. The number of subjects with removable dentures was 1468. Subjects with removable partial dentures had significantly more pockets and deeper pockets than did those without dentures. The periodontal condition of subjects with a complete denture in the opposite jaw was significantly better than that in other subjects. This was true in both men and women. The results indicated the importance of prophylactic and maintenance care in subjects with removable partial dentures.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 14 (1987), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The aim of this study was to analyse the clinical dental health, use of dental services and socio-economic factors correlating with the subjective need for removable dentures in Finnish adults aged 30 years and older. A total of 2528 persons who had lost one or more natural teeth (wisdom teeth excluded) and who had not been provided with any dentures, were selected for this study. Subjects who had subjective need for prosthetic treatment had statistically significantly fewer teeth and fewer fillings, and more decayed teeth than others. Irregular users of dental services felt the need for a prosthesis more often than did regular users of those services. Irregular brushing of teeth was also associated with a greater need for prosthetic treatment. Men, older individuals and persons with less education and a smaller family income felt the need for prosthetic treatment more often than women, younger individuals and better educated persons.The factors differentiating between the two groups with and without a subjective prosthetic treatment need were analysed by discriminant analysis. The best differentiating factors were frequency of dental visits, caries score, frequency of brushing teeth, family income, number of fillings and sex.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Food Quality and Preference 4 (1993), S. 87 
    ISSN: 0950-3293
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Physics, Section A 426 (1984), S. 287-300 
    ISSN: 0375-9474
    Keywords: Nuclear reactions
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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