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  • 1
    Electronic Resource
    Electronic Resource
    Treatment with allyl alcohol selects specifically for mutants of Clostridium acetobutylicum defective in butanol synthesis (1986)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 36 (1986), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Treatment of Clostridium acetobutylicum with allyl alcohol allowed the selection of mutants which were unable to produce n-butanol, whereas the synthesis of acetone and ethanol was unaffected. Enzymatic investigations revealed that all mutant strains were devoid of butyraldehyde dehydrogenase or showed a very low activity of this enzyme as compared to the wild type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1986.tb01670.x
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  • 2
    Electronic Resource
    Electronic Resource
    Experimentelle Rekonstruktion der Orbita beim Schaf mit biodegradablen Implantaten (1998)
    Springer
    Mund-, Kiefer- und Gesichtschirurgie 2 (1998), S. S117 
    Details
    ISSN: 1434-3940
    Keywords: Schlüsselwörter Orbitarekonstruktion ; Resorbierbare Implantate ; Polylaktat ; Key words Orbital reconstruction ; Biodegradable implants ; Polylactide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In a complex animal model in sheep, polydioxanone (PDS®) and polylactic membranes were used for the reconstruction of large orbital-wall defects. In a long-term experiment over 1 year, polylactic implants alone showed the best performance as compared with combinations involving autogenous bone grafts and titanium miniplate fixation. As soon as these polylactic implants are approved for human surgery, they will be used to solve the still challenging problem of anatomical reconstruction of large comminuted fractures of more than one orbital wall.
    Notes: Zusammenfassung In einem experimentellen Modell wurden biodegradierbare Membranen aus Polydioxanon (PDS ® ) resp. Polylaktat zur Rekonstruktion großer Orbitawanddefekte bei Schafen verwendet. Im Langzeitversuch über ein Jahr zeigten diejenigen Rekonstruktionen die besten Resultate, bei welchen ausschließlich biodegradierbare Implantate aus Polylaktat zur Anwendung kamen. Bei gleichzeitiger Verwendung von autologen Knochentransplantaten und Titan-Miniplatten-Osteosynthesen war die anatomische Form der rekonstruierten Orbita weniger zuverlässig gewährleistet. Es darf erwartet werden, dass die klinische Zulassung der Polylaktat-Implantate die chirurgische Wiederherstellung ausgedehnter Trümmerfrakturen mehrerer Orbitawände wesentlich erleichtern wird und zu vorhersehbaren, anatomischen Rekonstruktionen führt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014455
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Free expansion of a Bose–Einstein condensate from an Ioffe–Pritchard magnetic trap (1998)
    Springer
    Applied physics 67 (1998), S. 719-722 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 03.75.Fi; 05.30.Jp; 32.80.Pj
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 5 rubidium-87 atoms released from an Ioffe–Pritchard magnetic trap is investigated experimentally. The expansion dynamics depend only on the trap frequencies, which are determined independently. The data are in good agreement with the expected expansion of a condensate, and are clearly distinct from the behaviour of a classical gas in the hydrodynamic regime.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003400050571
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  • 4
    Electronic Resource
    Electronic Resource
    Genetic variation of an acid phosphatase (Acp-2) in the laboratory rat: Possible homology with mouse AP-1 and human ACP2 (1986)
    Springer
    Biochemical genetics 24 (1986), S. 1-11 
    Details
    ISSN: 1573-4927
    Keywords: Rattus norvegicus ; acid phosphatases ; genetic variation ; linkage studies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A genetic locus controlling the electrophoretic mobility of an acid phosphatase in the rat (Rattus norvegicus) is described. The locus, designed Acp-2, is not expressed in erythrocytes but is expressed in all other tissues studied. The product of Acp-2 hydrolyzes a wide variety of phosphate monoesters and is inhibited by l(+)-tartaric acid. Inbred rat strains have fixed either allele Acp-2a or allele Acp-2b. Codominant expression is observed in the respective F1 hybrids. Backcross progenies revealed the expected 1:1 segregation ratio. Possible loose linkage was found between the Acp-2 and the Pep-3 gene loci at a recombination frequency of 0.36±0.06.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00502974
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  • 5
    Electronic Resource
    Electronic Resource
    Coherent population transfer in NO with pulsed lasers: the consequences of hyperfine structure, doppler broadening aaand electromagnetically induced absorption (1998)
    Springer
    The European physical journal 1 (1998), S. 57-70 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 33.80.Wz Other multiphoton processes - 33.80.-b Photon interactions with molecules - 42.65.Dr Stimulated Raman scattering; CARS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Coherent population transfer between vibrational levels of the NO molecule induced by the interaction of two delayed laser pulses, also referred to as stimulated Raman scattering involving adiabatic passage (STIRAP), is studied experimentally in a molecular beam and in the bulk. The consequences of hyperfine splitting and Doppler broadening are discussed in detail. Unlike in previous studies of this kind, transfer occurs simultaneously between more than one group of non degenerate levels. In a molecular beam or in the bulk, the transfer efficiency of STIRAP exceeds that obtained by Stimulated Emission Pumping (SEP) by a factor of 3.6 or 15, respectively. We estimate the absolute transfer efficiency T in the beam to be , while is found in the bulk. In both cases, this is of the maximum value expected from numerical studies. Possible reasons for this discrepancy are discussed. Finally we show that the absorption of a pump pulse in a weakly absorbing medium is significantly enhanced by the presence of a copropagating Stokes pulse when the Rabi frequency of the latter is smaller than the width of the Doppler profile . The relation of this observation to the phenomenon of Electromagnetically Induced Transparency (EIT), which is observed for , is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530050064
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    Paper (German National Licenses)
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