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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 791-795 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A detailed treatment of space-charge and free-carrier densities is proposed to precisely analyze deep-level concentrations by using capacitance transient measurements. This treatment is very effective for analysis of midgap levels, if thermally activated carriers from other defect levels play an important role in the free-carrier density. The application of this analysis to evaluation of the midgap defect in bulk GaAs materials is demonstrated.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 3492-3494 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A 2 in. diam single crystal of lithium tetraborate (Li2B4O7) was successfully grown by the Czochralski method. The crystal was free from macrodefects and had a dislocation density as low as 100/cm2. It had an excellent homogeneity of the refractive index and a wide transparency down to 170 nm. The optical damage threshold was 40 GW/cm2. Second-harmonic generation and sum frequency generation were investigated in association with the generation of the fourth and fifth harmonics of a Q-switched Nd:YAG laser. The conversion efficiency of the second-harmonic generation from the green (532 nm) light was 20%. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In einer retrospektiven Analyse wurden die klinischen Charakteristika der von 1982–1993 in einer Universitätsklinik aufgetretenen nosokomialen Bakteriämien durch methicillinresistenteStaphylococcus aureus (MRSA) (Gruppe M n=71) und durchPseudomonas aeruginosa (Gruppe P=25) analysiert. Es handelte sich in den meisten Fällen um nosokomiale Infektionen bei Patienten mit Grundkrankheiten. Unterschiede zwischen den beiden Gruppen hinsichtlich Geschlechtsverteilung und dem mittleren Alter der Patienten fanden sich nicht. Das Verhältnis internistische Stationen zu chirurgischen Stationen war in Gruppe P mit 18/7=2,6 höher als in Gruppe M mit 38/33=1,2.P. aeruginosa wurde häufiger bei Patienten mit hämatologischen Grunderkrankungen isoliert und MRSA bei Patienten mit soliden Tumoren. In den letzten Jahren ist ein tendenzielles Ansteigen des Anteils von MRSA unter den grampositiven und vonP. aeruginosa unter den gramnegativen Bakterien und eine insgesamt abnehmende Antibiotikaempfindlichkeit zu beobachten. Die Zunahme dieser beiden Erreger verdient Wachsamkeit.
    Notes: Summary Clinical features of nosocomial bacteremias due to methicillin-resistantStaphylococcus aureus (MRSA) (M group, n=71) andPseudomonas aeruginosa (P group, n=25) in a university hospital during 1982–1993 were retrospectively analyzed. The majority of these patients had an underlying disease, and bacteremia occurred in hospital. There were no differences in the male to female ratio and the mean age of the patients between the two groups. The ratio of medical wards to surgical wards was higher in the P group (18/7=2.6) than for the M group (38/33=1.2).P. aeruginosa was more frequently isolated from patients with hematological malignancies and MRSA with solid tumors. The percentage of MRSA among gram-positive bacteremia and ofP. aeruginosa among gram-negative bacteria has shown a tendency to increase in recent years, and antibiotic sensitivity of these two organisms showed, on a whole, a tendency to decrease. Attention should be called to the increase of these two pathogens.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 10 (1981), S. 705-708 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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