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  • Electronic Resource  (51)
  • 1990-1994  (12)
  • 1965-1969  (36)
  • 1950-1954  (3)
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  • Electronic Resource  (51)
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  • 11
    Electronic Resource
    Electronic Resource
    Pyridoxin-abhängige Veränderungen im chemischen Aufbau der Hyphen vonNeurospora sitophila (1968)
    Springer
    Archives of microbiology 61 (1968), S. 30-39 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Neurospora sitophila 299 (pyridoxinbedürftig) zeigt mit steigendem Angebot an Pyridoxol · HCl im Medium statistisch gesicherte Zunahmen an Protein, Zellwandsubstanzen (einschließlich Chitin) und Asche sowie Abnahmen an RNA und DNA. Der Lipidgehalt ist vom Pyridoxolangebot unabhängig. Der Durchmesser der Hyphen ist im Pyridoxinmangel statistisch signifikant größer als bei ausreichenden Gaben. Bei elektronenmikroskopischer Betrachtung gibt es keinen Anhalt für Pyridoxin-induzierte Veränderungen der Zellwandstärke.
    Notes: Summary With rising concentrations of pyridoxine in culture mediumNeurospora sitophila 299 (pyridoxineless) shows a significant increase of the relative amounts of protein, cell wall substances (incl. chitin), and ash, and a decrease of RNA and DNA. The lipid contents remain unchanged. The diameters of pyridoxine deficient hyphae are significantly greater than those of normal hyphae. Electron microscopic examination shows that B6-deficient cells do not contain a thinner or thicker than normal cell wall layer external to the membrane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00704289
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  • 12
    Electronic Resource
    Electronic Resource
    Phenylalanin-Toleranz bei Frühgeborenen, reifen Neugeborenen, Säuglingen und Erwachsenen (1966)
    Springer
    Journal of molecular medicine 44 (1966), S. 1076-1081 
    Details
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary 1. The phenylalanine tolerance was estimated after intravenous injection of L-phenylalanine in premature newborns, mature newborns, infants and normal adults. The elimination of phenylalanine from the blood followed the pattern of a monomolecular reaction. The rate of elimination was, therefore, chosen for the comparison of the degree of tolerance. 2. The tolerance of phenylalanine was markedly reduced in most of the prematures; the same was found in some of the mature newborn infants. Compared with the tolerance in adults there was no decrease of phenylalanine tolerance in most of the mature newborns and in all infants. 3. The relation of phenylalanine tolerance to the activity of phenylalanine hydroxylase and to the development of the phenylalanine hydroxylase system was discussed.
    Notes: Zusammenfassung 1. Die Phenylalanin-Toleranz wurde vergleichend bei Frühgeborenen, reifen Neugeborenen, Säuglingen und Erwachsenen bestimmt. Die Untersuchung erfolgte nach intravenöser Injektion von L-Phenylalanin. Die Elimination von Phenylalanin aus dem Blut erfolgte entsprechend einer Exponentialfunktion. Zur Beurteilung des Toleranzgrades wurde die Eliminationshalbwertszeit gewählt. 2. Die Phenylalanin-Toleranz war bei den meisten Frühgeborenen herabgesetzt. Bei reifen Neugeborenen kamen Toleranzverminderungen vor; sie waren jedoch wesentlich seltener. Die meisten Neugeborenen und alle Säuglinge zeigten eine Phenylalanin-Toleranz, die der beim normalen Erwachsenen entspricht. 3. Es werden die Beziehungen diskutiert, die zwischen der Phenylalanin-Toleranz und der Aktivität der Phenylalaninhydroxylase bestehen, und es wird auf die bei neonatalen Tieren beobachteten Aktivitätsverminderung des Phenylalaninhydroxylase-Systems hingewiesen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01716309
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  • 13
    Electronic Resource
    Electronic Resource
    Absolute pionic x-ray intensities in Mg and Fe (1991)
    Springer
    The European physical journal 341 (1991), S. 101-105 
    Details
    ISSN: 1434-601X
    Keywords: 36.10.Gv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Absolute pionic x-ray intensities have been measured for Mg and Fe. The accuracy achieved was 2% of the line intensity for the most prominent transitions. In the Balmer series of Mg and the Paschen series of Fe the crossover transitions were found to be even more attenuated than the transitions between circular states, as deduced, for example, by comparison with muonic atoms; no crossover transitions were observed in the Fe Balmer series. According to cascade calculations based on the experimental intensities more than half of the pions are absorbed in Fe already from levels with principal quantum numbern〉17 by strong interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01281280
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  • 14
    Electronic Resource
    Electronic Resource
    Measurement of the stopping power of Au and MgF2 for slow muons (1993)
    Springer
    The European physical journal 346 (1993), S. 81-84 
    Details
    ISSN: 1434-601X
    Keywords: 36.10.Gv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The spectral flux densityn(T) of μ− emerging from a Au or MgF2 moderator has been measured at low energiesT using time-of-flight. Fromn(T) the stopping powerS(T) of Au was determined for 2 keV≤T≤22 keV, and of MgF2 for 2 keV≤T≤12 keV. For Au,S(T) is smaller than calculated values obtained from proton atomic data practically in the wholeT range (Barkas effect); at lowT S(T) approaches the calculated values. For MgF2,S(T) agrees fairly with the calculated values above 5 keV and then drops below these values. We ascribe this dropping to the large energy gap of the MgF2 insulator.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290784
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  • 15
    Electronic Resource
    Electronic Resource
    Forces on intraocular lens haptics induced by capsular fibrosis (1990)
    Springer
    Graefe's archive for clinical and experimental ophthalmology 228 (1990), S. 363-368 
    Details
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Electronic dynamometry measurements, performed upon intraocular lens (IOL) haptics of prototype one-piece three-loop silicone lenses, accurately defined the relationships between elastic force and haptic displacement. Lens implantations in the capsular bag of dogs (loop span equal to capsular bag diameter, loops undeformed immediately after the operation) were evaluated macrophotographically 5–8 months postoperatively. The highly constant elastic property of silicon rubber permitted quantitative correlation of subsequent in vivo haptic displacement with the resultant force vectors responsible for tissue contraction. The lens optics were well centered in 17 (85%) and slightly offcenter in 3 (15%) of 20 implanted eyes. Of the 60 supporting loops, 28 could be visualized sufficiently well to permit reliable haptic measurement. Of these 28, 20 (71 %) were clearly displaced, ranging from 0.45 mm away from to 1.4 mm towards the lens' optic center. These extremes represented resultant vector forces of 0.20 and 1.23 mN respectively. Quantitative vector analysis permits better understanding of IOL-capsular interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00920063
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  • 16
    Electronic Resource
    Electronic Resource
    The kinetics of muon-catalyzed dt fusion (1993)
    Springer
    Hyperfine interactions 82 (1993), S. 357-372 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A main source of information about the muon-catalyzed fusion cycle in D-T mixtures are the cycling rates λc, which are characteristic for the kinetic equilibrium of states attained rapidly in dense targets. The measurement, analysis and interpretation of these rates will be discussed, concentrating on the extensive set of rates observed at PSI over the last decade in gaseous, liquid and solid targets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01027973
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  • 17
    Electronic Resource
    Electronic Resource
    Epithermal effects in muon-catalyzed dt fusion: comparison of experimental data with theoretical predictions (1993)
    Springer
    Hyperfine interactions 82 (1993), S. 391-406 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Very high dtμ molecular formation rates for epithermal (i.e., not thermalized) muonic tritium atoms have been observed in experiments and are predicted by theory. The present detailed analysis shows qualitative agreement although further calculations will be needed to reach a complete understanding of all processes involved. The importance of epithermal effects for a correct description of muon-catalyzed fusion phenomena has been confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01027975
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  • 18
    Electronic Resource
    Electronic Resource
    Dissolution of platinum metal alloys contained in the feed clarification sludge (1991)
    Springer
    Journal of radioanalytical and nuclear chemistry 152 (1991), S. 199-206 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The dissolution behaviour of two alloys, which represent the metallic precipitates, occurring in the dissolution step of a nuclear reprocessing plant was investigated. The solubility of these alloys, containing Mo, Ru, Rh and Pd, in HNO3-solutions is rather low and dissolution ceases after some time, caused by passivation. A significant acceleration of the dissolution rate takes place if ozone is passed through the alloy/HNO3-suspension, or if an electrolytic dissolver with or without an oxidation catalyst is used. Moreover, Ru can be separated as RuO4 by distillation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02042153
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  • 19
    Electronic Resource
    Electronic Resource
    Zur Entwicklungsgeschichte der Naphtol AS-Farbstoffe (1954)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 66 (1954), S. 429-434 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird ein Rückblick auf die vierzigjährige Entwicklung der Naphtol AS-Farbstoffe gegeben, die sich durch eine sehr reichhaltige Palette und große Kombinationsmöglichkeit auszeichnen. Vor allem werden die Besonderheiten ihrer Eigenschaften und deren Variation mit der Art der Substituenten, sowie die Herstellung haltbarer Diazosalze (Echtfärbesalze) behandelt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19540661502
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  • 20
    Electronic Resource
    Electronic Resource
    Zum induzierten Zerfall von unsymmetrischen Acylperoxiden (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 79 (1967), S. 1006-1006 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19670792277
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