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  • Springer  (236)
  • 2015-2019  (28)
  • 2010-2014  (43)
  • 2005-2009  (35)
  • 1990-1994  (71)
  • 1970-1974  (22)
  • 1930-1934  (37)
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Keywords
Publisher
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Lifetime-measurements of alkali-molecules excited by different laserlines (1970)
    Springer
    The European physical journal 232 (1970), S. 462-472 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Absorbing different lines of acw-argon ion laser or a He-Ne-laser the alkali molecules Na2, K2, Rb2 and Cs2 can be pumped into different rotational-vibrational levels of an excited electronic state. The lifetimes of these states have been measured using the phase shift technique at a modulation frequency of 18 Mc/sec. Because of collisions with the always present alkali atoms the excited molecules may undergo collision-induced transitions to other states and their lifetimes are dependent on the atomic pressure. This dependence was measured and the spontaneous lifetimes were obtained by extrapolation against zero pressure. Different collision processes are discussed which compete with the unperturbed fluorescence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01395677
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  • 2
    Electronic Resource
    Electronic Resource
    Photoproton spectrum from carbon with good energy resolution (1974)
    Springer
    The European physical journal 270 (1974), S. 93-95 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The 90° photoproton spectrum from12C has been measured with good energy resolution using bremsstrahlung with maximum energyEγ=31 MeV. A fragmentation of the giant dipole resonance in fine structures with a typical width of 150 to 300 keV is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01677439
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of sex on the urinary bilirubin excretion at increased free plasma haemoglobin levels in whole dogs and in isolated normothermic perfused dog kidneys (1971)
    Springer
    Cellular and molecular life sciences 27 (1971), S. 1264-1265 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé Si le taux sanguin en hémoglobine libre dépasse les 50 mg/100 ml, l'excrétion rénale de la bilirubine est fortement augmentée chez le chien, tandis qu'elle reste faible chez la chienne. Les mêmes résultats sont obtenues par perfusion de reins isolés avec du sang hépariné ou défibriné.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02136676
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  • 4
    Electronic Resource
    Electronic Resource
    Persistence of the insecticide dimethoate in three different soils under laboratory conditions (1991)
    Springer
    Bulletin of environmental contamination and toxicology 46 (1991), S. 492-498 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01688190
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  • 5
    Electronic Resource
    Electronic Resource
    Testing the Porcupine Plate hypothesis (1994)
    Springer
    Marine geophysical researches 16 (1994), S. 315-323 
    Details
    ISSN: 1573-0581
    Keywords: North Atlantic ; tectonics ; Charlie-Gibbs fracture zone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The Porcupine Plate, postulated in 1986 to explain difficulties in reconstructing anomalies 21 and 24 in the North Atlantic, is re-examined. Focusing sharply on the spreading segments nearest to Charlie-Gibbs Fracture Zone casts doubt on the Porcupine Plate hypothesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01224748
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  • 6
    Electronic Resource
    Electronic Resource
    Thermal stability of Mo/Si multilayer soft-X-ray mirrors fabricated by electron-beam evaporation (1994)
    Springer
    Applied physics 58 (1994), S. 371-376 
    Details
    ISSN: 1432-0630
    Keywords: 68.55 ; 68.65 ; 78.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Mo/Si multilayers are fabricated by electron-beam evaporation in UHV at different temperatures (30° C, 150° C, 200° C) during deposition. After completion their thermal stability is tested by baking them at temperatures (T bak) between 200° C and 800° C in steps of 50° C or 100° C. After each baking step the multilayers are characterized by small angle CuKα-X-ray diffraction. Additionally, the normal incidence soft-X-ray reflectivity for wavelengths between 11 nm and 19 nm is determined after baking at 500° C. Furthermore, the layer structure of the multilayers is investigated by means of Rutherford Backscattering Spectroscopy (RBS) and sputter/Auger Electron Spectroscopy (AES) technique. While the reflectivity turns out to be highest for a deposition temperature of 150° C, the thermal stability of the multilayer increases with deposition temperature. The multilayer deposited at 200° C stands even a 20 min 500° C baking without considerable changes in the reflectivity behaviour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00323612
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  • 7
    Electronic Resource
    Electronic Resource
    Purines and cortisone in lipid mobilization (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 128-129 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Purin-Basen, Kaffein und Cortison führen zu einer Vermehrung der Fettsäuren im Rattenserum. Adenin vermindert im Gegensatz zu den anderen Purinen die Lipolyse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01895532
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  • 8
    Electronic Resource
    Electronic Resource
    Degradation of haemoglobin-14C and urinary excretion of bilirubin-14C by the normothermic perfused isolated dog kidney (1973)
    Springer
    Cellular and molecular life sciences 29 (1973), S. 410-411 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé L'hémoglobine libre du sang, filtrée par les glomérules rénaux et partiellement absorbée par les tubules, est métabolisée par le tissu renal. A l'aide de l'hémoglobine marquée en14C, formée à partir de la glycine-2-14C et de la glycine-1-14C nos résultats prouvent que chez le chien mâle les reins métabolisent l'hémoglobine en bilirubine conjugée et excrètent cette dernière dans les urines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01926750
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  • 9
    Electronic Resource
    Electronic Resource
    Ewing's tumor X mouse hybrids expressing the MIC2 antigen: analyses using fluorescence CDD-banding and non-isotopic ISH (1992)
    Springer
    Human genetics 〈Berlin〉 88 (1992), S. 273-278 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary We present a highly sensitive method that has been applied to map the chromosomal origin of the prominent cell surface antigen of Ewing's tumor cells recognized by monoclonal antibody HBA-71. The technique allows an unambiguous identification of human chromosomal material in interspecific cell hybrids. This is achieved by fluorescent in situ hybridization of biotinylated total human DNA, followed by high resolution fluorescence banding with the chromomycin/distamycin/ DAPI triple stain. An advantage of this method is that all signals can be visualized in one single operation by simply switching the appropriate filter blocks. The protocol has proved extremely useful in gene mapping by means of interspecific cell hybrids, a technique that depends on the accurate and unambiguous recognition of the relevant (e.g., human) genetic material in the clonal genome. Our studies confirm that this antigen is the product of the MIC2 gene, which is so far the only well-studied pseudoautosomal gene in man, and which is located on the short arms of chromosomes X and Y. Furthermore, no influence of the Ewing's tumor-specific translocation t(11;22) on MIC2 expression could be discerned.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00197258
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  • 10
    Electronic Resource
    Electronic Resource
    Density dependent interactions between VA mycorrhizal fungi and even-aged seedlings of two perennial Fabaceae species (1992)
    Springer
    Oecologia 91 (1992), S. 281-287 
    Details
    ISSN: 1432-1939
    Keywords: Vesicular-arbuscular mycorrhizas ; Densitydependence ; Plant population dynamics ; Resource depletion ; Phosphorus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The interaction of density and mycorrhizal effects on the growth, mineral nutrition and size distribution of seedlings of two perennial members of the Fabaceae was investigated in pot culture. Seedlings of Otholobium hirtum and Aspalathus linearis were grown at densities of 1, 4, 8 and 16 plants per 13-cm pot with or without vesicular-arbuscular (VA) mycorrhizal inoculum for 120 days. Plant mass, relative growth rates, height and leaf number all decreased with increasing plant density. This was ascribed to the decreasing availability of phosphorus per plant as density increased. O. hirtum was highly dependent on mycorrhizas for P uptake but both mycorrhizal and non-mycorrhizal A. linearis seedlings were able to extract soil P with equal ease. Plant size distribution as measured by the coefficient of variation (CV) of shoot mass was greater at higher densities. CVs of mycorrhizal O. hirtum plants were higher than those of non-mycorrhizal plants. CVs of the facultatively mycorrhizal A. linearis were similar for both mycorrhizal and non-mycorrhizal plants. Higher CVs are attributed to resource preemption by larger individuals. Individuals in populations with high CVs will probably survive stress which would result in the extinction of populations with low CVs. Mass of mycorrhizal plants of both species decreased more rapidly with increasing density than did non-mycorrhizal plant mass. It is concluded that the cost of being mycorrhizal increases as plant density increases, while the benefit decreases. The results suggest that mycorrhizas will influence density-dependent population processes of faculative and obligate mycorrhizal species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317797
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