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  • Springer  (19)
  • 2000-2004  (8)
  • 1980-1984  (6)
  • 1975-1979  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 6 (1978), S. 269-276 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Immunofluorescence tests indicate that alloantibodies specific for mouse histocompatibility antigens H-1a, H-3a, and H-13a have been produced, using four different immunizations. Furthermore, an immunization employing donors and recipients which were H-2k at the MHC produced stronger anti-H-3a and anti-H-13a than did immunizations where donors and recipients were H-2b at the MHC.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 4 (1977), S. 257-266 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Alloantibodies specific for non-H-2 histocompatibility antigens of the mouse have been produced. Immunization (BALB/cJ×DBA/2J)F1 anti-B10.D2/n was conducted, followed by hemagglutination, immunofluorescence, and mixed hemabsorption tests on absorbed and unabsorbed sera. The results indicate that antibodies specific for H-3a and H-8a antigens are present. In addition, H-8a antigenic determinants were detected on erythrocyte membrane surfaces, as well as on cells of other body tissues.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Inventiones mathematicae 68 (1982), S. 21-101 
    ISSN: 1432-1297
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 68 (1981), S. 507-512 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Notes: Abstract Triboluminescence is the light emitted when mechanical energy is applied to a crystal. Many common substances such as sugar and copper sulfate are triboluminescent. The origin of the light and the mechanical, chemical, and crystallographic requirements of the phenomenon are described in this paper.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of ornithology 120 (1979), S. 1-11 
    ISSN: 1439-0361
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary The population of the White Stork in Baden-Württemberg (South-west Germany) was approximately constant in the post-war years until 1959. Beginning with 1960 it started to decline with an average rate of 13% per year. After 1960 the average annual mortality rate increased both in adults and in first year birds. In addition the average age of first breeding and the average percentage of pairs without breeding success increased in the second period. The latter means a decrease of breeding success. Some possible causes for the changes of these parameters are mentioned.
    Notes: Zusammenfassung Der Bestand des Weißstorchs in Baden-Württemberg blieb in den Nachkriegsjahren bis 1959 annähernd gleich; erst seit 1960 nehmen die Bestandszahlen jährlich um durchschnittlich etwa 13% ab. Sowohl bei den Altvögeln als auch bei den einjährigen Störchen hat die durchschnittliche jährliche Verlustrate nach 1960 zugenommen. Ebenso erhöhte sich in der zweiten Periode das durchschnittliche Erstbrutalter. Nach 1960 nahm der durchschnittliche Anteil erfolglos brütender Paare zu, der durchschnittliche Bruterfolg verringerte sich. Einige der möglichen Ursachen für die Veränderungen der einzelnen Parameter werden angeführt.
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  • 6
    ISSN: 1572-9559
    Keywords: hydrazine ; methanol ; heavy water ; ammonia ; new far-infrared laser lines ; optically pumped far-infrared laser ; laser frequencies ; relative intensity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A far-infrared laser cavity designed to favor short-wavelength laser lines was used to generate optically-pumped far-infrared laser radiation. New far-infrared laser lines were discovered in hydrazine, heavy water, ammonia, and several short-wavelength lines previously discovered in methanol were observed. Wavelength, frequency, and relative intensity measurements were performed on laser lines in the wavelength range 42.4 to 253.7 μm. Each far-infrared frequency measurement was obtained by mixing the far-infrared radiation with radiation from two reference CO2 lasers and from a microwave synthesizer in a metal-insulator-metal diode. The pump laser was a high-Q Fabry Perot resonator oscillating on 275 grating-selected laser lines including regular, sequence, and hot band lines.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    International journal of infrared and millimeter waves 21 (2000), S. 731-737 
    ISSN: 1572-9559
    Keywords: 12CD3OH ; 12CH3OD ; 12CH2DOH ; new far-infrared laser lines ; optically-pumped far-infrared laser ; laser frequencies ; relative intensity ; relative polarization ; pump-frequency offset
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Twenty-seven new far-infrared laser lines from the isotopomers of methanol: 12CD3OH, 12CH3OD, and 12CH2DOH, were obtained by optically-pumping the molecules with an efficient cw CO2 laser. The CO2 laser provided pumping from regular, sequence, and hot-band CO2 laser transitions. The 2-m long far-infrared cavity was a metal-dielectric waveguide closed by two, flat end mirrors. Several short-wavelength (below 100 μm) lines were observed. The frequencies of 28 laser lines observed in this cavity (including new lines and already known lines) were measured with a fractional uncertainty limited by the fractional resetability of the far-infrared laser cavity, of 2 parts in 107.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International journal of infrared and millimeter waves 21 (2000), S. 477-483 
    ISSN: 1572-9559
    Keywords: 12CD3OH ; 12CH3OD ; 12CH2DOH ; new far-infrared laser lines ; optically pumped far-infrared laser ; laser frequencies ; relative intensity ; relative polarization ; pump-frequency offset
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Twenty-seven new FIR, far-infrared, laser lines from the isotopomers of methanol: 12CD3OH, 12CH3OD, and 12CH2DOH, were obtained by optically pumping the molecules with an efficient cw CO2 laser. The CO2 laser provided pumping from regular, sequence, and hot-band CO2 laser transitions. The 2 m long far-infrared cavity was a metal-dielectric waveguide closed by two, flat end mirrors. Several short-wavelength (below 100 μm) lines were observed. The frequencies of 28 laser lines observed in this cavity (including new lines and already known lines) were measured with a fractional uncertainty limited by the fractional resetability of the far-infrared laser cavity, of 2 parts in 107.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Plant cell, tissue and organ culture 1 (1981), S. 265-273 
    ISSN: 1573-5044
    Keywords: Ipomoea ; morning glory ; cell culture ; acid phosphatases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two acid phosphatases isolated from culturedIpomoea (moring glory) cells were separated by column chromatography on DEAE-cellulose. The two acid phosphatases have different pH optima (pH 4.8–5.0 and 6.0) and do not require the presence of divalent ions. The enzymes possess high activity toward pyrophosphate,p-nitrophenylphosphate, nucleoside di- and triphosphates, and much less activity toward nucleoside monophosphates and sugar esters. The two phosphatases differ from each other in Michaelis constants, in the degree of inhibition by arsenate, fluoride and phosphate and have quantitative differences of substrate specificity. In addition, they also differ in their response to various ions.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-0991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Aspartate transcarbamoylase (ATCase) has been isolated and characterized from 20 different strains ofYersinia enterocolitica andY. enterocolitica-like organisms. A variety of regulatory properties have emerged for the ATCases from the different strains. These regulatory properties may be used as a taxonomic tool to divideY. enterocolitica andY. enterocolitica-like organisms into separate groups. Results are in accord with the recent assignment ofY. enterocolitica andY. enterocolitica-like organisms to four DNA-relatedness groups and four correspondingYersinia species.
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