Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1995-1999
  • 1985-1989  (4)
  • 1955-1959
  • 1986  (4)
Material
Years
  • 1995-1999
  • 1985-1989  (4)
  • 1955-1959
Year
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 2507-2510 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gold-n-type GaAs Schottky contacts have been fabricated on a single-crystal part of polycrystalline GaAs with grain size of about 1 cm. The current-voltage (I-V) characteristic has been measured over the temperature range 120–380 K. The barrier height is evaluated from the Richardson plot as 0.57 eV, and discussed by taking account of the effects of an interfacial layer between the metal and semiconductor. The capacitance-voltage (C-V) characteristic has been measured at 0.1, 1, and 100 kHz over the temperature range 120–500 K. A frequency dispersion is observed in the C-V characteristic. It is explained by the frequency dispersion in the dielectric constant of the interfacial layer and the capacitive response of trapping states in the interfacial layer and single-crystal parts of polycrystalline GaAs.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 8 (Jan. 1986), p. 125-132 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 23 (1986), S. 181-186 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Employing isoeletric focusing combined with enzyme-linked immunoelectrotransfer blot analysis, the fourth component of complement (C4) was analyzed in the two highly histocompatible, major histocompatibility complex homozygous groups (J and K) of Xenopus laevis. Each group had a characteristic C4 isoelectric focusing pattern, i. e., an isoelectric point range of 8.0–8.5 for J (C4 j C4 j ) and 7.6–8.1 for K (C4 k C4 k ). In (J x K)F1 frogs, C4 proteins were expressed in a codominant fashion (C4 j C4 k ). In the backcrossed progeny B1 [J × (J × K)F1], those with C4 j C4 j rejected (J × K)F1 skins hyperacutely (〈 17 days), were high responders against (J × K)F1 cells, and nonstimulators to J cells in mixed lymphocyte reaction (MLR), but they did not suffer from the graft-versus-host reaction (GVHR), even after the injection of (J x K)F1 cell-stimulated J splenocytes. On the other hand, the B1 frogs with C4 j C4 k acutely or chronically (〉 17 days) rejected (J × K)F1 skins, were low or nonresponders against (J × K)F1 cells and high stimulators to J cells in MLR, and they suffered from GVHR after the injection of prestimulated J splenocytes. These results argue for the notion that the genes equivalent to mammalian class III map to the MHC at the phylogenetic level of the anuran amphibian.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Infection 14 (1986), S. S226 
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Ofloxacin war in seiner antibakteriellen Aktivität gegen Enterobacteriaceae,Pseudomonas aeruginosa, Haemophilus influenzae, Branhamella catarrhalis undNeisseria gonorrhoeae mit Norfloxacin und Enoxacin vergleichbar und weit wirksamer als Pipemidsäure und Nalidixinsäure. Die Aktivität von Ofloxacin war zwei- bis achtfach geringer als die von Ciprofloxacin. GegenStaphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Acinetobacter spp.,Legionella spp. undBacteroides fragilis besaß Ofloxacin größere Wirksamkeit als Norfloxacin, Enoxacin, Pipemidsäure und Nalidixinsäure und war mit Ciprofloxacin vergleichbar. Die Wirksamkeit von Ofloxacin bei systemischen Infektionen in Mäusen, verursacht durchS. aureus, Escherichia coli, Serratia marcescens undP. aeruginosa, war zwei- bis siebenmal stärker als die von Norfloxacin. Ofloxacin besaß starke Hemmwirkung gegen das durch die (ausE. coli Kl-16 rein gewonnene) DNA-Gyrase vermittelte Supercoiling der DNA. Zwischen antibakterieller Aktivität von Ofloxacin und seiner Hemmwirkung gegen DNA-Gyrasen Ofloxacinempfindlicher und Ofloxacin-resistenter klinischer Isolate vonE. coli besteht eine parallele Beziehung. Daraus kann man schließen, daß sich die hohe bakterizide Wirksamkeit von Ofloxacin und verwandten neuen Chinolonen durch ihre starke Hemmwirkung gegen DNA-Gyrasen in Bakterienzellen erklären läßt.
    Notes: Summary The antibacterial activity of ofloxacin against Enterobacteriaceae,Pseudomonas aeruginosa, Haemophilus influenzae, Branhamella catarrhalis, andNeisseria gonorrhoeae was comparable to norfloxacin and enoxacin, and far exceeded the activity of pipemidic acid and nalidixic acid. The activity of ofloxacin was two to eight times less than that of ciprofloxacin. Ofloxacin was more active againstStaphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Acinetobacter spp.,Legionella spp., andBacteroides fragilis, than norfloxacin, enoxacin, pipemidic acid and nalidixic acid, and the activity of ofloxacin was comparable to that of ciprofloxacin. Ofloxacin was two to seven times more effective than norfloxacin in systemic infections in mice withS. aureus, Escherichia coli, Serratia marcescens andP. aeruginosa. Ofloxacin strongly inhibited DNA supercoiling activity of DNA gyrase purified fromE. coli KL-16. There is a parallel relationship between antibacterial activity of ofloxacin and its inhibitory action against DNA gyrases from ofloxacin-susceptible and ofloxacin-resistant clinical isolates ofE. coli. These results indicate that the high bactericidal action of ofloxacin and the related new quinolone agents can be explained by their potent inhibitory activities against DNA gyrase in bacterial cells.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...