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  • 1
    Digitale Medien
    Digitale Medien
    Stability of ion-implanted layers on MgO under ultrasonic cavitation (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 2781-2787 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The effects of ion implantation and ultrasonic cavitation on the near-surface region of MgO single crystals were investigated. For 150 keV, room-temperature implantations of Ar+ or K+ at 5×1016–1017 ions cm−2 into a (100)-oriented surface of MgO, a dilatometric swelling of the implanted layer is observed perpendicular to the implanted surface. When these strained surface layers are then subjected to an ultrasonic (∼20 kHz) cavitation treatment, uniform layers (∼100–200 nm) can be removed from the MgO surface in a controlled manner. The thickness of the removed layer is directly related to the duration of the ultrasonic irradiation, but does not exceed the depth of the implanted species. When MgO implanted with Ar+ or Kr+ at fluences of 5×1016–1017 ions cm−2 is subsequently irradiated with 2 MeV He+ ions at 1016–1017 ions cm−2, the region exposed to the He+ beam is effectively "stabilized'' and is not removed by the ultrasonic treatment. K+ or Ar+ implantations at 〈5×1016 ions cm−2 produced no swelling of the layer, and subsequent ultrasonic irradiation with an energy flux of ∼120 W cm−2 did not remove the crystal surface as determined by profilometry. For MgO implanted with (approximately-greater-than)2×1017 ions cm−2, the implanted layer is highly strained and detaches from the underlying crystal without exposure to ultrasonic-cavitation effects. These findings are discussed in terms of the stressed states of the implanted layers, and their potential applications to the mechanical "etching'' of ceramics are considered.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.363195
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  • 2
    Digitale Medien
    Digitale Medien
    ESR of the BH4 molecule in solid hydrogen (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 4756-4759 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: BH4, with isotopic substitution, has been prepared and trapped in solid H2, D2, HD by laser vaporization of boron and subsequent reaction with the matrix gas. The results confirm the C2v structure of the molecule and generally support the results of Symons et al., on γ-irradiated NaBH4. Differences from those results are discussed, and comparison is made with the CH4+ parameters of Knight et al.© 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.474838
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  • 3
    Digitale Medien
    Digitale Medien
    Southern Hemisphere automated supernova search (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 2777-2784 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: The Perth Astronomy Research Group has developed an automated supernova search program, using the 61 cm Perth–Lowell reflecting telescope at Perth Observatory in Western Australia, equipped with a CCD camera. The system is currently capable of observing about 15 objects per hour, using 3 min exposures, and has a detection threshold of 18th–19th magnitude. The entire system has been constructed using low-cost IBM-compatible computers. Two original discoveries (SN 1993K, SN 1994R) have so far been made during automated search runs. This paper describes the hardware and software used for the supernova search program, and shows some preliminary results from the search system. © 1995 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1145624
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  • 4
    Digitale Medien
    Digitale Medien
    Vitamin B6. Ion exchange chromatography of pyridoxal, pyridoxol, and pyridoxamine (1975)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 23 (1975), S. 915-916 
    Details
    ISSN: 1520-5118
    Quelle: ACS Legacy Archives
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/jf60201a001
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  • 5
    Digitale Medien
    Digitale Medien
    THE GLUTAMATE AND GLUTAMINE CONTENT OF RAT BRAIN AFTER PORTOCAVAL ANASTOMOSIS (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 19 (1972), S. 0 
    Details
    ISSN: 1471-4159
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Abstract— Rats have been subjected to portocaval anastomosis and the ammonium ion in plasma and the glutamate and glutamine levels in plasma, red cells and brain have been estimated up to 6 weeks after operation. The glutamine, but not the glutamate, levels in brain were consistently raised, being about 2.5 times greater than normal and the level can be correlated with the level of plasma ammonium ion. Consideration is given to the possibility that the glutamine may be in the greatly enlarged neuroglial compartment in this abnormal metabolic state.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-4159.1972.tb01427.x
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  • 6
    Digitale Medien
    Digitale Medien
    SCANNING ELECTRON MICROSCOPY IN THE STUDY OF CERVICAL NEOPLASIA (1971)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 78 (1971), S. 0 
    Details
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Scanning electron microscopy has been used to study normal and abnormal cervical epithelia. Normal columnar epithelium and normal squamous epithelium have been identified and described. Carcinoma in situ has also been examined and characteristic differences in tissue organization and cell morphology have been recognized. The surfaces of normal squamous cells are arranged with interconnecting microridges, whereas the surface epithelium from carcinoma in situ cells is arranged in closly packed microvilli. The significance of these results and the possible potential of the technique in studying the natural history of carcinoma in situ are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-0528.1971.tb00209.x
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  • 7
    Digitale Medien
    Digitale Medien
    Pumps as Turbines and Induction Motors as Generators for Energy Recovery in Water Supply Systems (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 12 (1998), S. 0 
    Details
    ISSN: 1747-6593
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Energietechnik
    Notizen: Pressure-reducing valves, which dissipate energy, are often used in water supply systems to regulate the downstream pressure levels. If a reverse running pumpset is installed alongside such a valve, most of the dissipated energy can be recovered.This paper describes a system of this type which has recently been installed by North West Water, with advice and specialized equipment supplied by the Nottingham Trent University Micro-Hydro Group. The power produced by the energy-recovery system is used to run and monitor a remote potable-water dosing plant.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1747-6593.1998.tb00169.x
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  • 8
    Digitale Medien
    Digitale Medien
    T-Cell Receptor V-Region Usage and Antigen Specificity (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 756 (1995), S. 0 
    Details
    ISSN: 1749-6632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1749-6632.1995.tb44477.x
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  • 9
    Digitale Medien
    Digitale Medien
    PEELING OF CHINESE WATERCHESTNUTS (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The extensive hand labor required in peeling Chinese waterchestnut corms has dicouraged their production in this country. After cutting the apical and basal ends from the corms, the peel was removed by softening in hot alkali, followed by wet brushing. The lignaceous pigmentation which stains the corms during peeling was decolorized by treatment with hydrogen peroxide. A nomograph to optimize peel softening in terms of alkali concentration, time and temperature is presented. This nomograph shows solutions to the equation 6.76 = [0.038 (°F) - (6.51/% NaOH) - (9.81/min of treatment)].
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1976.tb01107.x
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  • 10
    Digitale Medien
    Digitale Medien
    INCREASING THE VALUE OF MANAGEMENT APPRAISAL SCHEMES: AN ORGANIZATIONAL LEARNING APPROACH (1970)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of management studies 7 (1970), S. 0 
    Details
    ISSN: 1467-6486
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Wirtschaftswissenschaften
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1467-6486.1970.tb00479.x
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