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  • 1
    Electronic Resource
    Electronic Resource
    Alternative method for the calculation of the detection limit in emission spectrography (1975)
    s.l. : American Chemical Society
    Analytical chemistry 47 (1975), S. 188-189 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60351a016
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Cytomegalovirus infection and disease in renal transplant patients treated with cyclosporin (1989)
    Springer
    Transplant international 2 (1989), S. 92-95 
    Details
    ISSN: 1432-2277
    Keywords: Cytomegalovirus infection in kidney transplantation ; Cytomegalovirus disease and rejection ; Rejection and cytomegalovirus disease ; Risk factors for cytomegalovirus disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In this prospective study, the incidence of cytomegalovirus (CMV) infection and CMV disease was determined in 175 renal transplant recipients on cyclosporin and low-dose prednisone. CMV infection occurred in 51.4% of the patients, CMV disease in 13.7%. The major manifestations of CMV disease were fever of unknown origin and leukopenia. In the group with CMV infection, there was an increased occurrence of rejection (60% in infected vs 27% in noninfected patients). In most patients (41/54), the rejection preceded the CMV infection. CMV infection did not lead to a decreased graft survival. There was no close time relationship between the onset of clinical symptoms of CMV disease and the laboratory confirmation of CMV infection. A subgroup of patients at risk for the development of severe CMV disease could not be identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02459326
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  • 3
    Electronic Resource
    Electronic Resource
    Cannibalism as a life boat mechanism (1988)
    Springer
    Journal of mathematical biology 26 (1988), S. 619-633 
    Details
    ISSN: 1432-1416
    Keywords: Structured population model ; McKendrick equation ; Subcritical bifurcation ; Solver
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Under certain conditions a cannibalistic population can survive when food for the adults is too scarce to support a non-cannibalistic population. Cannibalism can have this lifeboat effect if (i) the juveniles feed on a resource inaccessible to the adults; and (ii) the adults are cannibalistic and thus incorporate indirectly the inaccessible resource. Using a simple model we conclude that the mechanism works when, at low population densities, the average yield, in terms of new offspring, due to the energy provided by one cannibalized juvenile is larger than one.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276144
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Evidence for a resonance in positron-electron scattering at 810 keV centre-of-mass Energy (1988)
    Springer
    The European physical journal 330 (1988), S. 173-181 
    Details
    ISSN: 1434-601X
    Keywords: 13.10.+q ; 12.20.Fv ; 14.80.Pb
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A monoenergetic positron (e +) beam (ΔT/T〈5·10−4) from the Stuttgart pelletron accelerator and a 4.6 mg/cm2 Be target has been employed to investigatee + e −scattering in the MeV region in a large solid angle with high statistics by means of a novel positionsensitive detector system. Superimposed on the Bhabha scattering, a structure has been found at ane + kinetic energy of 2263 keV (810 keV excitation energy in thee + e −rest frame). From the energy-integrated resonance cross-section of $$\sigma _{res} \cdot \Gamma _{res}^{e^ + e^ - } $$ ≅30 b·eV (c.m.) and the standard resonance cross-section we estimate partial resonance widths $$\Gamma _{res}^{e^ + e^ - } $$ ≅72 meV or 24 meV for total angular momenta J=0 or J=1, respectively. The structure, which has not been predicted within the framework of quantum electrodynamics, coincides with one of the sum energies of the correlatede + e −lines observed in heavy-ion collisions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01293393
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  • 5
    Electronic Resource
    Electronic Resource
    On the possible existence of superheavy elements in monazite (1977)
    Springer
    The European physical journal 280 (1977), S. 39-44 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Proton-induced x-ray studies of monazite grains from different occurrences show no evidence for primordial superheavy elements. It is demonstrated that the recently reported evidence for superheavy elements in monazite inclusions of biotite mica showing giant halo formation is not significant: the observed differences in the x-ray spectra of normal and giant halo inclusions are due to different backgrounds in the respective spectra. Moreover, it is shown that the 27.2 keV line tentatively interpreted as theL α1x-ray of elementZ=126 can be entirely attributed to the reaction140Ce(p,n γ)140Pr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01438107
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  • 6
    Electronic Resource
    Electronic Resource
    Asymptotic attenuation coefficients in random perturbations of Angular Correlations (1977)
    Springer
    The European physical journal 280 (1977), S. 329-339 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The time-differential attenuation coefficients for randomly fluctuating interactions in isotropic systems are shown to be of the simple exponential type (well known from the first order treatment of Abragam and Pound) fort≫Τ c , notwithstanding the strength of 〈Ω2〉1/2Τ c . Explicit expressions for the relaxation constant are given which are strongly dependent on the strength of 〈Ω2〉1/2Τ c and on the type of interaction but prove to be virtually independent of the stochastic model assumptions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435441
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  • 7
    Electronic Resource
    Electronic Resource
    Mother to child transmission of hepatitis B virus in the Philippines (1989)
    Springer
    Infection 17 (1989), S. 275-279 
    Details
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In den Philippinen wurde zwischen 1981 und 1983 eine Verlaufsstudie zur Mutter-Kind-Übertragung des Hepatitis-B-Virus durchgeführt. Bei 527 Müttern fand sich eine HBsAg-Prävalenz von 8,5%. Sieben von 17 Neugeborenen (41,2%) der HBsAg-Carrier-Mütter wurden im Ablauf der ersten 12 Lebensmonate HBsAg-positiv. Bei Kindern HBsAg-positiver Mütter war das Risiko einer HBsAg-Serokonversion 20mal höher als bei Kindern HBsAg-negativer Mütter (OR=18,9; 95%; Ci=2,0−86,6). Bei Müttern, die nicht nur HBsAg, sondern auch HBeAg-Carrier waren, bestand ein noch größeres Risiko für das Kind, HBsAg-positiv zu werden (OR=91,0; 95%; Ci=49,2−164,8). Bei Müttern, die HBsAg-Carrier, aber anti-HBe-positiv waren, bestand nur ein sehr geringes Übertragungsrisiko. Schätzungsweise sind ein Drittel der Fälle von HBsAg-Positivität bei einjährigen Kindern auf Mutter-Kind-Übertragung zurückzuführen. Die Bedeutung dieser Daten für die Planung von Impfaktionen zur Prävention von HBV-Infektionen wird diskutiert.
    Notes: Summary A follow-up study of mother to infant transmission of hepatitis B virus was conducted in the Philippines between 1981 and 1983. The prevalence of HBsAg among 527 mothers was 8.5%. Overall, seven out of 17 (41.2%) infants born to HBsAg carrier mothers became HBsAg positive within the first 12 months of life. The risk of becoming HBsAg positive was about 20 times higher for infants born to HBsAg positive mothers than for infants born to HBsAg negative mothers (OR=18.9, 95% Ci=2.0−86.6). The risk was even higher if the mother was a carrier of both HBsAg und HBeAg (OR=91.0, 95% Ci=49.2−164.8). However, the risk of transmission was very low if the mother was an HBsAg carrier and anti-HBe positive. It was estimated that mother to infant transmission accounts for about one third of HBsAg positivity at one year of age. The implications of these findings in the planning of vaccination campaigns to prevent HBV infections are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01650707
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  • 8
    Electronic Resource
    Electronic Resource
    Indonesian mungbean landraces I. Pure-line selection for yield when intercropped with maize (1987)
    Springer
    Euphytica 36 (1987), S. 783-790 
    Details
    ISSN: 1573-5060
    Keywords: Vigna radiata ; mungbean ; Zea mays ; maize ; landrace ; intercropping ; pure-line selection ; yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary When mungbean landraces from East Java were intercropped with maize, genetic variation for grain yield was observed. Three cycles of selection resulted in a yield increase of 24% as compared to the original landraces. The yield of the maize component in the mixture was not affected by the increase of the mungbean yield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00051861
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  • 9
    Electronic Resource
    Electronic Resource
    Indonesian mungbean landraces II. Comparison of performance, components of variance and selection for grain yield under wide row-spacing in monoculture and when intercropped with maize (1987)
    Springer
    Euphytica 36 (1987), S. 791-801 
    Details
    ISSN: 1573-5060
    Keywords: Vigna radiata ; mungbean ; Zea mays ; maize ; landrace ; intercropping ; monoculture ; genotype x environment interaction ; single-plant selection ; progeny selection ; grain yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The possibility of testing mungbean for grain yield in monoculture in single wide-spaced row plots as an alternative to selection in intercropping with maize was investigated. Results indicated no significant genotype x planting pattern interactions and genetic correlation coefficients between grain yields in the two planting patterns were, in most cases, close to unity. It was concluded that, as far as the mungbean component in the mixture is concerned, yield selection in either of the two planting patterns is justified. Effects of single-plant and progeny selection on mungbean characteristics were also studied empirically. Lines derived from single-plant selection in monocropping or intercropping showed differences in yield, number of pods per plant and seed weight. Except for seed weight, no differential effects of progeny selection in monoculture or intercropping were observed for any characteristic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00051862
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  • 10
    Electronic Resource
    Electronic Resource
    The moment method in stochastic perturbation of angular correlations (1976)
    Springer
    The European physical journal 279 (1976), S. 141-144 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Time-differential perturbed angular correlation attenuation coefficients for isotropic fluctuating interactions are calculated to higher order in 〈Ω 2〉1/2 Τ c .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437869
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