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  • 1
    Electronic Resource
    Electronic Resource
    Experimental Ebullioscopic Constants (1953)
    s.l. : American Chemical Society
    Analytical chemistry 25 (1953), S. 1379-1382 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60081a022
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  • 2
    Electronic Resource
    Electronic Resource
    Titration of Copper Oxinate in Glacial Acetic Acid (1956)
    s.l. : American Chemical Society
    Analytical chemistry 28 (1956), S. 1688-1689 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60119a015
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  • 3
    Electronic Resource
    Electronic Resource
    The dynamics of amorphous-to-crystalline interface evolution in ion-implanted polycrystalline silicon (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 4332-4343 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Time-resolved reflectivity measurements have been used to investigate the morphology of an evolving amorphous-crystalline interface during solid phase epitaxial regrowth of an ion-implanted polycrystalline silicon film. Isothermal electron beam heating was used to produce partly regrown specimens for cross-sectional transmission electron microscopy analysis, and this has enabled a direct correlation to be established between the interface shape and the observed reflectivity transients. Using a thin-film optical model of an evolving rough interface, this correlation has enabled interface shapes to be inferred from the reflectivity at higher temperatures, where it is difficult to achieve partial regrowth. For undoped material, smaller grain sizes have been found to lead to rougher interfaces, with regrowth rates typically 20 times slower than for single crystal. At 620 °C, the presence of high concentrations of arsenic results in a smoother interface, but as the regrowth temperature is increased, the interface becomes rougher. The complex interplay between doping, temperature, and initial microstructure is investigated at temperatures up to 850 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.352817
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  • 4
    Electronic Resource
    Electronic Resource
    Large third-order optical nonlinearities of nickel-dithiolene-doped polymethylmethacrylate (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 512-514 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The third-order optical nonlinearity χ(3) of two novel guest-host polymers has been measured. The polymers consisted of nickel dithiolene guest molecules in a polymethylmethacrylate host and were prepared as cast or spun films. The optical nonlinearity was measured by degenerate four-wave-mixing experiments at a wavelength of 1.06 μm using 100-ps laser pulses. χ(3) coefficients of up to 10−17 m2/V2 were observed, corresponding to nonlinear refractive index n2 of up to 10−8 cm2/kW with a damage threshold (approximately-greater-than)1 GW/cm2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350688
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  • 5
    Electronic Resource
    Electronic Resource
    Tunnel switch diode based on AlSb/GaSb heterojunctions (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 6948-6950 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report on tunnel switch diodes based on AlSb barriers and GaSb p–n junctions grown by molecular beam epitaxy. These were the devices with thyristor like switching in the GaSb/AlSb system. The characteristic "S" shaped current–voltage curve was found to occur for structures with AlSb barriers less than 300 Å thick. The switching voltage and current density exhibited less sensitivity to barrier and epilayer thickness than was predicted by the punch-through model. The results were correlated with drift diffusion simulations which have been modified to account for the presence of a tunneling contact. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1317236
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  • 6
    Electronic Resource
    Electronic Resource
    Experiments on a 14.5 GHz electron cyclotron resonance source : Proceedings of the 7th international conference on ion sources (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 643-645 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The 14.5 GHz ECR4 source supplied to CERN in the framework of the heavy ion facility collaboration provided Pb27+ operational beams to a new heavy ion linac in 1994. This source, which operates in the pulsed "afterglow" mode, has surpassed its design specification of 80 eμA and now provides currents 〉120 eμA on an operational basis for this charge state. Early tests showed the existence of extremely stable modes of operation which are fully exploited, and in 1996 the source was operational on a 24 h basis for more than 2400 h. Future operational requirements will benefit from the 10 Hz repetition rate of the source, but will require beam pulse length modulation. In the search for higher intensities a number of experiments were performed on gas composition, rf power matching, extraction, plasma chamber liner, and a biased dynode. The results of these tests will be presented. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148535
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of a biased probe on the afterglow operation of an ECR4 ion source : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 863-865 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Various experiments have been performed on a 14.5 GHz ECR4 in order to improve the ion yield. The source runs in pulsed afterglow mode, and provides currents ∼120 eμA of Pb27+ to the CERN Heavy Ion Facility on an operational basis. In the search for higher beam intensities, the effects of a pulsed biased disk on axis at the injection side were investigated with different pulse timing and voltage settings. No proof for absolute higher intensities was seen for any of these modifications. However, the yield from a poorly tuned/low-performing source could be improved and the extracted pulse was less noisy with bias voltage applied. The fast response on the bias implies that increases/decreases are not due to ionization processes. A good tune for high yield of high charge states during the afterglow coincides with a high plasma potential. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150314
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  • 8
    Electronic Resource
    Electronic Resource
    Modeling of the electron cyclotron resonance sulphur source (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 191-196 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A MINIMAFIOS-type electron cyclotron resonance ion source is being used for S12+ injection into the CERN injector chain for physics experiments at the Super Proton Synchrotron. In this article, charge state distribution spectra obtained from the source are studied and, in addition, the possibility of improving the source performance by various methods is explored.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144430
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  • 9
    Electronic Resource
    Electronic Resource
    Use of molecular techniques to study microbial diversity in the skin: Chronic wounds reevaluated (2001)
    Oxford, UK : Blackwell Science, Ltd.
    Wound repair and regeneration 9 (2001), S. 0 
    Details
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The skin is colonized by an array of microorganisms which form its natural microflora. Disruption to the normal barrier function of the skin (due to trauma or disease) may result in invasion of the dermis by opportunistic bacteria. To date, these organisms, which may contribute to the chronicity of skin wounds, have been analyzed solely by culture methods. It is increasingly realized that standard culture methods of analysis do not accurately reflect the full diversity of complex microflora. This review discusses the limitations of traditional culture approaches and reviews recent advances in molecular microbiological techniques which facilitate a more comprehensive characterization of the microflora within clinical samples. The currently available technologies and techniques are described, as is their use in clinical practice and their potential for diagnostic screening. Chronic venous ulceration of the lower limbs is an important skin disorder in which the microflora invading the dermal tissues contribute to the observed delayed healing. Using chronic leg ulcers as a working example, we show how strict culture and molecular microbiological techniques may be employed, for the first time in combination, to definitively characterize the invading microbial community of the dermis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1524-475x.2001.00332.x
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  • 10
    Electronic Resource
    Electronic Resource
    Randomized clinical trial of the effect of semi-occlusive dressings on the microflora and clinical outcome of acute facial wounds (2000)
    Oxford, UK : Blackwell Science Inc
    Wound repair and regeneration 8 (2000), S. 0 
    Details
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study investigated whether treatment with occlusive, hydroactive polyurethane dressings affects the microflora and clinical outcome of acute wounds. A randomized, controlled trial was performed on 60 patients with acute facial lacerations. Following primary closure, patients were provided with either a dry-gauze dressing or a hydroactive polyurethane dressing (Cutinova® Thin). The wounds were assessed clinically and microbiologically prior to closure, then after 5, 28 and 56 days. The dressing, which was removed at day 5, was also sent for microbiological culture. Wounds treated with the polyurethane dressing showed improved comfort and contour (p 〈 0.04), less erythema (p 〈 0.03) and less potential for scarring (p 〈 0.01) at day 5. At day 28 and day 56, there were no significant differences in the clinical assessment between the test and control groups (p 〉 0.05). A total of 518 isolates were recovered from the patients during the study. Mean number of isolates and bacterial growth density were calculated in both groups. A similar range of microorganisms were obtained from both treatment groups with no clear difference in organism colonization. This study shows the potential usefulness of facial wounds as a human model for studying acute wound healing responses and anti-scarring therapy. While short-term, clinical benefits of occlusive dressings were evident in the management of acute wounds, these data clearly show that all studies of scarring following acute wounding should extend over at least 3 months post-injury to allow for spontaneous improvement to occur.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1524-475x.2000.00258.x
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