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  • Articles: DFG German National Licenses  (6)
  • 1990-1994  (6)
  • 1985-1989
  • 1960-1964
  • 1991  (6)
Source
  • Articles: DFG German National Licenses  (6)
Material
Years
  • 1990-1994  (6)
  • 1985-1989
  • 1960-1964
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Super-allowed beta decay of nuclei at the drip-line (1991)
    Springer
    The European physical journal 340 (1991), S. 255-261 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.Hc ; 21.60.−n ; 27.20.+n
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have investigated the continuous particle spectra following the beta decay of the neutron-rich nuclei that terminate the mass 6, 8, 9 and 11 isobaric chains. Strong beta transitions feeding the very top of the spectrum are found systematically. The favoured states are within a few MeV of the energy of the initial state. This phenomenon seems to be linked to the occurrence of a di-neutron structure or neutron halo in the drip-line nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294673
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Air embolism and pulmonary interstitial emphysema in a preterm infant with hyaline membrane disease (1991)
    Springer
    Pediatric radiology 21 (1991), S. 521-522 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A preterm infant with severe hyaline membrane disease requiring extreme mechanical ventilation developed pulmonary air leaks with consecutive shock. The chest roentgenogram showed bilateral pulmonary interstitial emphysema and gas within the heart silhouette as well as in the hepatic veins, inferior v.cava, portal vein, and many abdominal vessels. The respiratory and circulatory failure by massive systemic gas embolism resulted in death.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02011730
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Phenomenological wave functions for the massA=14 system and a consistent description of beta decay observables (1991)
    Springer
    The European physical journal 341 (1991), S. 9-24 
    Details
    ISSN: 1434-601X
    Keywords: 21.60.−n ; 23.40.−s ; 25.30.−c
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A set of phenomenological wave functions has been derived to describe the14N ground state and the isospin triplet consisting of the14C ground state, the first excited state of14N at 2.313 MeV and the14O ground state. Elastic and inelastic electron scattering form factors, the magnetic moment of the14N ground state and the shape factors in theβ ± decay have been employed in a multiparameter fitting procedure to determine the amplitudes of the wave functions inL-S coupling. The inclusion of the beta decay observables in the fit has become possible for the first time since exact formulas for the shape factor in higher order do exist. The set of wave functions deduced exhibit predominately anL=0 contribution for the 0+; 1 states andL=1 and 2 contributions of nearly equal weight for the 1+; 0 state. It was observed that the inclusion of the shape factors allowed a more stringent determination of the amplitudes compared to previous attempts reported in the literature and led in the case of the 0+; 1 states to wave functions that show a small but noticeable difference within the isospin triplet. Besides the observables used for the fit, the radiative widthΓ γ (M1) of the 2.313 MeV state in14N can be described quite well with the derived wave functions, and in addition it has become possible to predict the pathological largeft − value of the14C decay and theft + value of the14O decay precisely. The wave functions are also applied to calculate the14N(γ,π +) cross section.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01281270
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Reaction of 3H, 6H-1, 2-Dithiolo[4,3-c]1,2-dithiole-3, 6-dithione with primary aliphatic amines (1991)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 333 (1991), S. 19-24 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of 3H,6H-1,2-dithiolo[4,3-c]1,2-dithiole-3, 6-dithione (1) with primary aliphatic amines (8a,b) gives 3H,6H-3,6-bisalkylimino-1,2-dithiolo[4,3-c]1,2- dithiole (9a,b), 3H,3-N-alkylamino-5-N-alkylthiocarbamido-1, 2-dithiolium-4-thiolate (10a,b) and 3H,3-N-alkylimino-4-alkylamino-5-N-alkylthiocarbamido-1,2-dithiole (11a,b). The compounds 9-11 can be formed from one another. The compounds 10a,b react with nickel chloride to the stable complexes 14a,b. In basic medium 10 gives the salt of 3H,3N-alkylthiocarbamido-1,2-dithiole-4-thiolate 15, which reacts with methyl iodide to 3H,3N-alkylimino-5-N-alkylthiocarbamido-4-methylthio-1,2-dithiole 16.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19913330103
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of temperature on the supermolecular structure of polyethylene - a Raman spectroscopic study (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 337-338 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010420712
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Organische Elektronenleiter und Vorstufen. XIII. Untersuchungen zum thermischen Verhalten von Poly(bis-alkylthio-acetylen)en (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 615-620 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The thermal properties of poly(bis-alkylthio-acetylene)s in the temperature range from 30°C to 600°C have been investigated. On the basis of thermal analysis, 13C-solid state NMR and ESR spectroscopic measurements on the solid phases and gas chromatographic characterization of the volatile pyrolysis products, possible pyrolysis reactions are formulated. A simple kinetic model of the thermal behaviour of poly(bis-methylthio-acetylene) in a wide range of temperature and time is suggested.
    Notes: Das thermische Verhalten der Poly(bis-alkylthio-acetylen)e wurde im Temperaturbereich von 30°C bis 600°C untersucht. Aus den Ergebnissen der thermischen Analyse, aus 13C-Festkörper-NMR- und ESR-Messungen an den festen Thermolyserückständen und der Untersuchung der flüchtigen Pyrolyseprodukte werden mögliche Abbaureaktionen abgeleitet. Für einen weiten Zeit- und Temperaturbereich wird für Poly(bis-methylthio-acetylen) ein einfaches kinetisches Modell formuliert.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010421201
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    Paper (German National Licenses)
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