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  • Springer  (33)
  • Molecular Diversity Preservation International  (8)
  • Wiley-Blackwell  (7)
  • Bonn  (3)
  • 2015-2019  (17)
  • 2010-2014  (13)
  • 1985-1989  (6)
  • 1970-1974  (4)
  • 1965-1969  (7)
  • 1945-1949  (4)
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Language
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Year
  • 1
    Series available for loan
    Series available for loan
    Erste Ergebnisse der Messung klinometrischer Erdgezeiten mit dem Askania-Vertikalpendel Gbp 1 Nr.12 in der Teststation Erpel 1971/72 (1972)
    Bonn
    Associated volumes
    Details Availability
    Call number: SR 90.0091(9)
    In: Mitteilungen aus den Geodätischen Instituten der Rheinischen Friedrich-Wilhelms-Universität Bonn
    Type of Medium: Series available for loan
    Pages: 9 S.
    Series Statement: Mitteilungen aus dem Institut für Theoretische Geodäsie der Universität Bonn 9
    Language: German
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Series available for loan
    Series available for loan
    Korrelationsänderungen und scheinbare Punktverschiebungen im Trilaterationsnetz (1973)
    Bonn
    Associated volumes
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    Call number: SR 90.0091(19)
    In: Mitteilungen aus den Geodätischen Instituten der Rheinischen Friedrich-Wilhelms-Universität Bonn
    Type of Medium: Series available for loan
    Pages: II, 43 S.
    Series Statement: Mitteilungen aus dem Institut für Theoretische Geodäsie der Universität Bonn 19
    Language: German
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Series available for loan
    Series available for loan
    Die Anwendung der Prädiktion auf periodische Prozesse, eine Methode zur Überbrückung von Lücken in der Erdgezeitenregistrierung (1973)
    Bonn
    Associated volumes
    Details Availability
    Call number: SR 90.0091(14)
    In: Mitteilungen aus den Geodätischen Instituten der Rheinischen Friedrich-Wilhelms-Universität Bonn
    Type of Medium: Series available for loan
    Pages: I, 17 S.
    Series Statement: Mitteilungen aus dem Institut für Theoretische Geodäsie der Universität Bonn 14
    Language: German
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 4
    Electronic Resource
    Electronic Resource
    The influence of spatial correlation of concrete strength on the failure probabilities of reinforced concrete chinneys (1989)
    Springer
    Materials and structures 22 (1989), S. 255-263 
    Details
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract A procedure to estimate the failure probabilities of reinforced concrete (R/C) chimneys under severe wind loading which allows for considering realistic correlation values of concrete strength is developed. The results show that the assumption of full correlation of concrete strength within cross-sections, as suggested for example in present codes, may significantly overestimate the failure rates in present examples by two orders of magnitude. However, it is also shown that not only one but a number of cross-sections may contribute to the total failure rate of R/C chimneys. As a consequence, the failure estimates increase, in some cases by as much as two orders of magnitude. In the numerical examples as investigated here these counteracting effects neutralize each other. This fact, however, should not be generalized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02472557
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  • 5
    Electronic Resource
    Electronic Resource
    Überlegungen bei der Wahl der Methode zur Analyse von Spurenstoffen (1966)
    Springer
    Microchimica acta 54 (1966), S. 742-750 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary In the determination of materials that are present in very small amounts, it is necessary above all to learn the error of the individual steps of the analysis. The greatest partial error governs the total error of the procedure and usually is due to the inhomogeneity of the material being examined. Only with knowledge of the total error can a decision be reached as to whether the analysis has informational worth, and what apparatus is necessary. The concepts: error, precision, and accuracy are defined and the problem is made clear on the basis of several examples.
    Abstract: Résumé Dans le cas de l'analyse de substances se trouvant en très petites quantités, il est indispensable, en première ligne, d'établir l'erreur intervenant dans chaque étape de l'analyse. L'erreur partielle la plus grande l'emporte sur l'erreur totale du procédé. Elle est due, la plupart du temps, au manque d'homogénéité dû corps étudié. Les notions d'erreur, de précision et d'exactitude se trouvent définies et le problème est rendu explicite à l'aide d'exemples.
    Notes: Zusammenfassung Bei der Analyse von Stoffen, die in sehr geringen Gehalten vorliegen, ist es in erster Linie notwendig, die Fehler der einzelnen Analysenschritte festzustellen. Der größte Teilfehler beherrscht den Gesamtfehler des Verfahrens und ist meist in der Inhomogenität des zu untersuchenden Materials begründet. Erst bei Kenntnis des Gesamtfehlers kann entschieden werden, ob der Analyse Aussagekraft zukommt und welche Apparate notwendig sind. Die Begriffe Fehler, Genauigkeit und Richtigkeit werden definiert und das Problem an Hand einiger Beispiele deutlich gemacht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01222998
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  • 6
    Electronic Resource
    Electronic Resource
    Ein Plagioklas-Charnockit vom Typus Akoafim und seine Stellung innerhalb der Charnockit-Serie (1949)
    Springer
    Contributions to mineralogy and petrology 1 (1949), S. 573-592 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01111676
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  • 7
    Electronic Resource
    Electronic Resource
    Petrogenetisehe Studien zum Granulitproblem an Gesteinen der Münehberger Masse (1948)
    Springer
    Contributions to mineralogy and petrology 1 (1948), S. 269-340 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01098086
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  • 8
    Electronic Resource
    Electronic Resource
    Isolation and expression analysis of two yeast regulatory genes involved in the derepression of glucose-repressible enzymes (1987)
    Springer
    Molecular genetics and genomics 209 (1987), S. 366-373 
    Details
    ISSN: 1617-4623
    Keywords: Glucose repression ; Glucose derepression ; Regulatory genes ; Expression analysis ; Saccharomyces cerevisiae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Yeast strains carrying one of the two regulatory mutations cat1 and cat3 are defectve in derepression of several glucose-repressible enzymes that are necessary for utilizing non-fermentable carbon sources. Hence, these strains fail to grow on ethanol, glycerol or acetate. The synthesis of isocitrate lyase, malate synthase, malate dehydrogenase and fructose-1,6-bisphosphatase is strongly affected in cat1 and cat3 strains. Genes CAT1 and CAT3 have been isolated by complementation of the cognate, mutations after transformation with an episomal plasmid gene library. The restriction map of CAT1 proved its allelism to the earlier isolated SNF1 gene. Both genes appear to exist as single-copy genes per haploid genome as indicated by Southern hybridization. Northern analysis has shown that the 1.35 kb CAT3 mRNA is constitutively expressed, independent of the carbon source in the medium. Derepression studies with CAT3 transformants using a multi-copy plasmid showed over-expression of glyoxylate cycle enzymes. This result would be consistent with a direct effector function for the CAT3 gene product.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00329667
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  • 9
    Electronic Resource
    Electronic Resource
    Putative target sites for mobile G+C rich clusters in yeast mitochondrial DNA: Single elements and tandem arrays (1989)
    Springer
    Molecular genetics and genomics 218 (1989), S. 272-283 
    Details
    ISSN: 1617-4623
    Keywords: GC clusters ; Mobile elements ; Target sites ; mtDNA ; Saccharomyces cerevisiae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary GC clusters constitute the major repetitive elements in the mitochondrial (mt) genome of the yeast Saccharomyces cerevisiae. Many of these clusters are optional and thus contribute much to the polymorphism of yeast mtDNAs. We have made a systematic search for polymorphic sites by comparing mtDNA sequences of various yeast strains. Most of the 26 di- or polymorphic sites found differ by the presence or absence of a GC cluster of the majority class, here referred to as the M class, which terminate with an AGGAG motif. Comparison of sequences with and without the GC clusters reveal that elements of the subclasses M1 and M2 are inserted 3′ to a TAG, flanked by A+T rich sequences. M3 elements, in contrast, only occur in tandem arrays of two to four GC clusters; they are consistently inserted 3′ to the AGGAG terminal sequence of a preexisting cluster. The TAG or the terminal AGGAG, therefore, are regarded as being part of the target sites for M1 and M2 or M3 elements, respectively. The dinucleotide AG is in common to both target sites; it also occurs at the 3′ terminus (AGGAG). This suggests its duplication during GC cluster insertion. This notion is supported by the observation that GC clusters of the minor classes G and V similarily repeat at their 3′ terminus a GT or an AA dinucleotide, respectively, from their putative target sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331278
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  • 10
    Electronic Resource
    Electronic Resource
    Generation of the Gaussian-like HE11 mode from gyrotron TEOn mode mixtures at 70 GHz (1985)
    Springer
    International journal of infrared and millimeter waves 6 (1985), S. 459-470 
    Details
    ISSN: 1572-9559
    Keywords: high-power millimeter waves ; gyrotron ; electron cyclotron resonance heating (ECRH) ; overmoded waveguide systems ; mode conversion ; linearly polarized narrow pencil beam
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This work reports calculations and measurements on mode converters for the transformation of TEOn gyrotron mode mixtures (primarily TEO2) into the linearly polarized HE11 hybrid mode at 70 GHz. This mode is ideal for quasi-optical launching systems for ECRH of plasmas. Mode transducers with axisymmetric radius perturbations convert the gyrotron TEOn mode composition into the TEO1 mode. Proper matching of the phase differences between the various modes and of the perturbation amplitudes of the several converter sections is required. The TEO1 wave is used for long-distance transmission through smooth-walled overmoded waveguides. A mode converter with constant diameter and periodically perturbed curvature transfers the unpolarized TEO1 mode into the polarized TE11 wave. The experimentally determined ΣTEOn-to-TEO1 conversion efficiency is (98.5±1)% (99% predicted) while the TEO1-to-TE11 transformer has a (94±2)% efficiency (93% theoretically); ohmic losses are included. The “Gaussian-like” HE11 mode with axisymmetric power distribution and almost no cross polarization is produced in a circumferentially corrugated TE11-to-HE11 mode transducer with a measured conversion efficiency of (98.3±1.5)% (98.5% predicted). The overall efficiency of the complete mode converter system in the desired mode was determined to be (91±2.5)%. High-power operation (200kW, 100ms) has been successfully demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010037
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