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  • 1
    Electronic Resource
    Electronic Resource
    Soret and mass diffusion coefficients of toluene/n-hexane mixtures (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 103 (1995), S. 4367-4370 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Soret coefficients and mass diffusion coefficients of mixtures of toluene and n-hexane have been measured by thermal diffusion forced Rayleigh scattering (TDFRS) and are compared with literature data. For the mass diffusion coefficients a good agreement between different experimental techniques is found. For the Soret coefficients contradictory results are obtained from thermogravitational column measurements, small angle Rayleigh scattering, and TDFRS. Arguments supporting the TDFRS data are presented. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.470677
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal diffusivity and structural relaxation in a supercooled liquid by a holographic grating technique (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 104 (1996), S. 248-254 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The decay of a spatial transient temperature grating created within the molecular glass former phenolphthalein-dimethylether (PDE) relates to the hydrodynamic heat diffusion and the dynamics of local density fluctuations. The characteristics of the latter process agree well with the structural α relaxation observed by photon correlation and dielectric spectroscopy near and above the glass transition temperature Tg. When the α-relaxation time approaches the experimental timescale set-in by the thermal diffusivity the specific heat undergoes a dispersion. In either side of this dynamic regime, heat diffusion and α relaxation are independent modes. "Two fluid'' models of the vitreous state conform to the experimental observations. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.470895
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  • 3
    Electronic Resource
    Electronic Resource
    Raman scattering in sodium-liquid ammonia solutions (1972)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 76 (1972), S. 2481-2482 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100661a027
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  • 4
    Electronic Resource
    Electronic Resource
    Use of isozyme analysis in the breeding of synthetic rapeseed cultivars (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 115 (1996), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Eleven winter rapeseed inbred lines (I4) were characterized according to isozyme banding patterns from seven polymorphic enzyme systems. All lines could be qualitatively and quantitatively distinguished using two enzyme systems, shikimate dehydrogenase (SDH) and diaphorase (DIA). Genetic distances were calculated among lines and 15 selected two-line hybrids were planted as experimental synthetics in field-trials. Syn-0 populations produced seed yields between 0.4% lower and 12.9% higher than the mean yields of the respective parental lines. Syn-1 seed yields were 11–24.1% higher than the respective parental lines and the yield improvement was positively correlated with the genetic distance between the parental lines. This tendency suggests that genetic distances between cross components, calculated from isozyme polymorphism, can be used in prognosis of yield performance of synthetic rapeseed cultivars. Isozyme analysis was also applied to study fertilization behaviour in line mixtures, and differences among parental lines were observed with regard to the tendency for self-pollination or out-crossing. The partially very high outcrossing rate suggests the possible existence of a self-incompatibility system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1996.tb00960.x
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  • 5
    Electronic Resource
    Electronic Resource
    Random amplified polymorphic DNA variation among German and Dutch asparagus cultivars (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 117 (1998), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: DNA polymorphism among nine cultivars of Asparagus officinalis L. was measured using random amplified polymorphic DNA (RAPD). Of 69 reproducible amplification products from 12 arbitrary decamer primers, 49 RAPD markers were polymorphic and could be used to distinguish six German and three Dutch asparagus cultivars. Even with very small sample sizes, genetic similarity measurements based on the RAPD data allowed accurate grouping of the nine cultivars into distinct clusters, with the exception of two individuals which clustered to closely related varieties. Two German cultivars showed high genetic similarity and were distinct from the remaining German varieties. The German and Dutch cultivars were clearly separated by a relatively large genetic distance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1998.tb01943.x
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  • 6
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1970)
    Springer
    Naturwissenschaften 57 (1970), S. 504-506 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00593098
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  • 7
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1970)
    Springer
    Naturwissenschaften 57 (1970), S. 141-144 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00600079
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  • 8
    Electronic Resource
    Electronic Resource
    Versuche an einem mit pulsierendem Gleichstrom betriebenen Abreißbogen (1941)
    Springer
    Electrical engineering 35 (1941), S. 603-608 
    Details
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Zusammenfassung Einen einfachen und betriebssicheren Abreißbogen erhält man, wenn man der Bogengleichspannung eine Wechselspannung derart überlagert, daß der Minimalwert der resultierenden Spannung unter der Brennspannung des Bogens liegt. Es gelingt mit dieser Anordnung, bei Aluminium-Elektroden mit einer 50periodigen Wechselspannung Brenndauern von etwa 0,004 bis 0,015 s zu erzielen. Die sehr lichtstarke Entladung kann bis zu 45 min bei Aluminium aufrechterhalten werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01657570
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  • 9
    Electronic Resource
    Electronic Resource
    Berechnung instationärer Temperaturfelder mit finiten Elementen in Raum- und Zeitdimension (1974)
    Springer
    Heat and mass transfer 7 (1974), S. 195-199 
    Details
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Abstract A programme is demonstrated which apart from linear finite elements in time also includes elements with shape functions of the second and third degree. The algorithm for discretization in the time dimension is described and, using the example of a parabolic time element, the coefficients required to form the element matrices are given. A parabolic alteration within a time element is taken into consideration for the boundary conditions, this being of special importance in reproducing periodic processes. On the basis of certain test examples the efficiency of the process is examined by comparison with the customary mean difference method.
    Notes: Zusammenfassung Es wird ein Rechenprogramm vorgestellt, das neben linearen finiten Elementen in der Zeit auch Elemente mit Ansatzfunktionen 2ten und 3ten Grades beinhaltet. Der Algorithmus zur Diskretisierung in Zeitdimension wird beschrieben und am Beispiel eines parabolischen Zeitelementes werden die zur Bildung der Elementmatrizen notwendigen Koeffizienten angegeben. Für die Randbedingungen wurde dabei eine parabolische Änderung innerhalb eines Zeitelementes berücksichtigt, was von besonderer Bedeutung bei der Nachbildung periodischer Vorgänge ist. An Hand einiger Testbeispiele wird die Effizienz des Verfahrens durch Vergleich mit dem gebräuchlichen MittelDifferenzenverfahren untersucht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01445306
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  • 10
    Electronic Resource
    Electronic Resource
    X-linked adrenomyeloneuropathy associated with 14 novel ALD-gene mutations: no correlation between type of mutation and age of onset (1999)
    Springer
    Human genetics 〈Berlin〉 105 (1999), S. 116-119 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Adrenomyeloneuropathy (AMN) represents a milder form of X-linked adrenoleukodystrophy (ALD), the most frequent peroxisomal disorder. The disease is characterised by an abnormal accumulation of saturated, very long chain, fatty acids, because of altered peroxisomal ß-oxidation that concomitantly leads to demyelination in the central and peripheral nervous systems. ALD shows a highly variable phenotypic expression and extensive mutation analysis in ALD patients has failed to establish a genotype-phenotype correlation, even in the presence of the same ALD-gene defect. Therefore, we have looked for a relationship between the molecular lesion and the age of onset in 19 patients with a well-classified clinical course of AMN. The nearly complete novel spectrum of ALD gene mutations identified has revealed no obvious correlation between the type of mutation and age of AMN onset in this small series. However, intrafamiliar concordance could be observed with respect to the occurrence of adrenocortical insufficiency. This supports the idea of one (or more) additional gene(s) contributing to the phenotypic expression of ALD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004399900090
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