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  • 1
    Electronic Resource
    Electronic Resource
    Foreword (1984)
    Springer
    Bulletin of mathematical biology 46 (1984), S. 461-465 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02459496
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  • 2
    Electronic Resource
    Electronic Resource
    Quantitative evaluation of polymeric photosensitizers (1982)
    Springer
    Polymer bulletin 8 (1982), S. 369-375 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The energy transfer ability of free and polymer-bound acetophenone and benzophenone has been studied. The polymeric sensitizers were prepared by acetylation or benzoylation of atactic polystyrene (¯Mn=67.000). Trans-cis isomerization of stilbene, monitored by UV-spectrophotometry, has enabled the energy transfer process to be probed. The values of the Stern-Volmer constants, determined by following this technique, indicate that the energy transfer efficiency of both ketones is higher when they are in free state than when they are polymer-bound.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264928
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  • 3
    Electronic Resource
    Electronic Resource
    Solution polymerization of phosphonitrilic chloride trimer in chlorobenzene (1982)
    Springer
    Polymer bulletin 6 (1982), S. 535-539 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The solution polymerization of phosphonitrilic chloride trimer has been studied by using 50% by weight monomer in Chlorobenzene. Polymerization reactions were conducted at temperatures between 198° and 240°C, and reaction times ranged from 12 to 96 h. Mostly soluble polymer was obtained up to a conversion of 30%. insoluble product was detected only above 240°C and 72 h. of reaction time. Polymers were characterised by intrinsic viscosity and weight average molecular weight, Mw, by light scattering (Zimm plot).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256375
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  • 4
    Electronic Resource
    Electronic Resource
    Lamellar structure in melt crystallized low density polyethylene (1984)
    Springer
    Polymer bulletin 12 (1984), S. 269-274 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary A combined X-ray diffraction and DSC investigation of the crystalline phase in lamellar low density polyethylene after conventional chlorosulfonation treatment has been carried out. Our results indicate that the acid attack does not involve any heavy group penetration within the lattice. The location of these groups at the basal crystal surface contributes, however, to an enhancement of the melting temperature of the modified lamellae. It turns out that the destruction level of crystalline material at 45°C, after 15–20 h is of the order of 20% and progressively increases for longer periods of time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275978
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  • 5
    Electronic Resource
    Electronic Resource
    A Quasi-Newton method with modification of one column per iteration (1984)
    Springer
    Computing 33 (1984), S. 353-362 
    Details
    ISSN: 1436-5057
    Keywords: 65H10 ; Nonlinear systems ; Quasi-Newton methods
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Wir stellen ein neues Quasi-Newton-Verfahren vor zur Lösung von nichtlinearen simultanen Gleichungen. Bei jeder Iteration wird lediglich eine Spalte vonB k verändert, umB k+1 zu erhalten. Dies erlaubt, wohlbekannte Techniken der Linearen Programmierung zur Faktorisierung vonB k zu benützen. Wir beweisen einen Satz über die lokale Konvergenz für die Methode. Der neue Algorithmus wird mit anderen bezüglich seiner numerischen Eigenschaften verglichen.
    Notes: Abstract In this paper we introduce a new Quasi-Newton method for solving nonlinear simultaneous equations. At each iteration only one column ofB k is changed to obtainB k+1 . This permits to use the well-known techniques of Linear Programming for modifying the factorization ofB k . We present a local convergence theorem for a restarted version of the method. The new algorithm is compared numerically with some other methods which were introduced for solving the same kind of problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02242278
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  • 6
    Electronic Resource
    Electronic Resource
    Dielectric characteristics of miniature aluminium electrolytic capacitors under stressed voltage conditions (1984)
    Springer
    Journal of applied electrochemistry 14 (1984), S. 9-14 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The effects of applying voltages higher than the nominal voltageV N, for given periods of time, to miniature aluminium electrolytic capacitors has been investigated. The measurements of the current transients, theI–V characteristics, and the a.c. properties indicate that the main effect of subjecting the capacitors to the high voltages is an irreversible change in the capacitor dielectric characteristics as a consequence of a large increase in the resistance of the electrolyte and in the permanent leakage current through the anodic oxide. This current, very noticeable for voltages higher thanV N, is attributed to an electronic conduction mechanism in an avalanche regime. The measured dielectric parameters and their evolution after exposing the capacitors to stressed voltage conditions are interpreted in terms of an extension of McLean's equivalent circuit for an electrolytic capacitor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00611253
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  • 7
    Electronic Resource
    Electronic Resource
    Collision orbits in the oblate planet problem (1984)
    Springer
    Celestial mechanics and dynamical astronomy 33 (1984), S. 375-383 
    Details
    ISSN: 1572-9478
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Some of the properties of the oblate planet problem are derived. We use the technique of blowing up the singularity to study the collision orbits. We define some families of them in terms of their asymptotic behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01241051
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of the Wigner-Seitz boundary conditions on internal conversion coefficients (1984)
    Springer
    The European physical journal 316 (1984), S. 251-254 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Solid state effects are taken into account in an internal conversion coefficients computation by using Wigner-Seitz boundary conditions. Both the bound and free electron wave functions are calculated from an atomic Dirac-Hartree-Fock-Slater self consistent potential. These internal conversion coefficients are compared with those obtained from the usual free atom boundary conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01439896
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  • 9
    Electronic Resource
    Electronic Resource
    Effects of ouabain and furosemide on saliva secretion induced by sympathomimetic agents in isolated, perfused rat submandibular glands (1984)
    Springer
    Cellular and molecular life sciences 40 (1984), S. 557-559 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The presence of 10−3 M ouabain or furosemide in the perfusate inhibited saliva secretion induced by either isoproterenol (10−5 M) or phenylephrine (10−5 M) from isolated rat submandibular glands and caused characteristic alterations in the electrolyte composition of saliva.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01982328
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  • 10
    Electronic Resource
    Electronic Resource
    Modification of clonazepam anticonvulsive activity by its association with other anti-epileptic drugs (1977)
    Springer
    Cellular and molecular life sciences 33 (1977), S. 640-642 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The modification of the anti-epileptic activity of clonazepam by other anticonvulsivants is studied. The results vary according to the drug and technique used. The usefulness of the 2 techniques employed is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01946548
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