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  • 1
    Electronic Resource
    Electronic Resource
    Karyotype of two species of wasps of the genusPolistes (Polistinae, Vespidae, Hymenoptera) (1986)
    Springer
    Insectes sociaux 33 (1986), S. 142-148 
    Details
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Resume Le nombre de chromosomes et le caryotype de deux espèces de guêpes du genrePolistes ont été déterminés. Il a été développé une technique comprenant le traitement préalable à la colchicine et au citrate de sodium, lequel permet une identification plus précise des chromosomes. Les espècesPolistes (Aphanilopterus) simillimus avec n=28, 2n=56 chromosomes etPolistes (Aphanilopterus) versicolor versicolor avec n=31, 2n=62 chromosomes ont montré des caryotypes bien caractéristiques.
    Notes: Summary The chromosome number and karyotype of two wasp species of the genusPolistes were determined by a technique involving colchicine and sodium citrate pre-treatment, which permitted a more precise chromosome identification. The speciesPolistes (Aphanilopterus) simillimus, with n=28, 2n=56 chromosomes, andPolistes (Aphanilopterus) versicolor versicolor, with n=31, 2n=62 chromosomes, showed sharply characteristic individual karyotypes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02224594
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  • 2
    Electronic Resource
    Electronic Resource
    A biochemical analysis of Ak molecules from mutant antigen presenting cell lines (1986)
    Springer
    Immunogenetics 23 (1986), S. 121-125 
    Details
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00377972
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  • 3
    Electronic Resource
    Electronic Resource
    Solidification of aluminium-silicon alloy in the presence of graphite particles (1986)
    Springer
    Journal of materials science 5 (1986), S. 1083-1086 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01742205
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  • 4
    Electronic Resource
    Electronic Resource
    Mechanical behaviour of rapidly solidified aluminium-silicon ribbon-polyester composites (1986)
    Springer
    Journal of materials science 5 (1986), S. 823-826 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01730103
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  • 5
    Electronic Resource
    Electronic Resource
    An appraisal of the performance of the MMSC subgraph generation algorithm on a Cyber System 170/720 (1986)
    Springer
    Computing 37 (1986), S. 365-370 
    Details
    ISSN: 1436-5057
    Keywords: Maximal minimally strongly connected (MMSC) subgraphs ; cliques ; performance ; complexities ; cluster analysis ; maximal compatibles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung In einer kürzlich erfolgten Veröffentlichung von Daset al. wurde ein Algorithmus zur Erzeugung maximaler minimal stark zusammenhängender (MMSC) Untergraphen oder Cliquen in ungerichteten Graphen vorgeschlagen. Dieser Algorithmus basiert auf einer Verfeinerung der Technik der sukzessiven Aufspaltung, der von Paull und Unger eingeführt wurde. In der vorliegenden Arbeit wird das Leistungsverhalten dieses Algorithmus bei Implementierung in FORTRAN IV mit dem System Cyber 170/720 untersucht.
    Notes: Abstract An algorithm for generating maximal minimally strongly connected (MMSC) subgraphs or cliques in undirected graphs has been suggested by Daset al. in a recent paper. The proposed algorithm is based on a refinement of the technique of successive splitting described by Paull and Unger in the determination of maximal compatibles of states in the context of minimization of incomplete sequential machines. The present paper discusses the performance of the aforementioned subgraph generation algorithm in an implementation on Cyber System 170/720 using FORTRAN IV, in particular reference to cluster analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02251094
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  • 6
    Electronic Resource
    Electronic Resource
    Parallelization of the Volterra algorithm for linear optimal open loop control (1989)
    Springer
    Computational mechanics 5 (1989), S. 305-320 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract If and when the time variation of optimal controls of a linear system subject to known forces is required, they can be obtained by the computationally advantageous open loop Volterra formulation (as opposed to the costlier Riccati formulation). For the computation, the Volterra equation is discretized in the time domain via such schemes as trapezoidal integration or SIMPSON's rule and the resulting linear system is solved to obtain the control vector values at discrete time points within the control timeT. In the case of very large order systems (degrees of freedom ∼ 5000) a parallel technique is absolutely neccessary, and this paper enunciates an efficient parallel stratagem with efficiencies in the range of 80% and 100%. The algorithm uses ‘s + 1’ processors, ‘s’ being the number of intervals within the control timeT, and typically each processor characterizes one time point.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01046948
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  • 7
    Electronic Resource
    Electronic Resource
    Occurrence of krypton and xenon in the Bakreswar thermal spring gases (1989)
    Springer
    Naturwissenschaften 76 (1989), S. 520-521 
    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/BF00374125
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  • 8
    Electronic Resource
    Electronic Resource
    Intergeneric somatic hybrid production through protoplast fusion between Brassica juncea and Diplotaxis muralis (1988)
    Springer
    Theoretical and applied genetics 76 (1988), S. 915-922 
    Details
    ISSN: 1432-2242
    Keywords: Intergeneric somatic hybridisation ; Brassica ; Diplotaxis ; Somatic hybrid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The need to transfer genetic traits from Diplotaxis muralis (2n=42) to Brassica juncea (2n=36), a major oil seed crop of the tropical world, was realised. Since the two plant types are sexually incompatible, attempts were made to evolve parasexual hybrids as the result of protoplast fusion. Protoplasts of hypocotyl-derived calli of two cultivars of B. juncea were fused with normal and γ-irradiated mesophyll protoplasts of Diplotaxis muralis. Regeneration of 110 plants from the fused products was successfully achieved. Upon analysis of some of them, we realised that true somatic hybrids and partial somatic hybrids had been generated. Thus the primary goal of evolving intergeneric hybridisation products between these two plant types was fulfilled.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00273681
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of fission fragment nuclear structure on scission configuration in252Cf (S.F.) (1986)
    Springer
    The European physical journal 324 (1986), S. 81-85 
    Details
    ISSN: 1434-601X
    Keywords: 25.85W ; 25.85cs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract With the aim of investigating the influence of fragment nuclear structure e.g. shell closure configuration and odd-even nature on the scission configuration, fragment angular momenta have been deduced from the radiochemically determined independent isomeric yield ratios of the fission products111Pd,131Te,133Te,134I and138Cs in252Cf spontaneous fission. The fragments' angular momenta deduced are 8.8± 1.5, 5.8 ±1.0, 6.1±1.1, 11.5±1.1 and 9.8±1.2 ħ respectively. The angular momenta data from this work and literature have been analysed to arrive at fragments' deformations at the scission bringing out the influence of the spherical 82n and deformed 66n and 88n shells. The fragment angular momenta were also seen to be inversely correlated to their elemental yields exhibiting odd-even fluctuations. This has been explained in terms of equilibration of the collective degrees of freedom in low energy fission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290758
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  • 10
    Electronic Resource
    Electronic Resource
    Fragment angular momenta in low and medium energy fission of242Pu (1987)
    Springer
    The European physical journal 327 (1987), S. 225-229 
    Details
    ISSN: 1434-601X
    Keywords: 25.85.Ge ; 25.85.Ec
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Independent isomeric yield ratios of128Sb were determined radiochemically in the thermal neutron induced fission of241Pu and 34 MeV alpha particle induced fission of238U, both involving the same compound nucleus (242Pu). Fragment angular momenta estimated from the measured isomer ratios using the statistical model analysis showed significantly larger fragment angular momenta in the medium energy fissioning system compared to the low energy fissioning system. This has been attributed to the effect of higher excitation energy and angular momentum in the entrance channel leading to increased fragment temperature, moments of inertia and angular velocity. An attempt was made to calculate the fragment angular momentum in the medium energy fission using the Fermi gas model for the fissioning nucleus, taking into account the multichance fission, saddle shapes of the fissioning nuclei and the angular velocity components of the fissioning nuclei both along and orthogonal to the fission axis. The calculated angular momenta agree well with the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01292412
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