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  • 1
    Electronic Resource
    Electronic Resource
    Basic nuclear proteins in the Oömycete fungus Achlya bisexualis (1973)
    Springer
    Archives of microbiology 94 (1973), S. 249-258 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A comparison was made of the basic proteins extracted from the chromatin and nuclei of Achlya bisexualis, Blastocladiella emersonii, and Pisum sativum. Extraction of purified chromatin and nuclei of the Chytridiomycete, B. emersonii followed by gel electrophoresis produced no detectable protein bands. Extractions of purified nuclei and chromatin by either mineral acid or CaCl2 from the Oömycete A. bisexualis resulted in several protein bands following separation by disc gel electrophoresis. Monitoring the nucleic acids during the nuclear isolation procedure as well as comparing electropherograms of basic nuclear proteins with basic ribosomal proteins suggests no significant contamination of the nuclear preparations with ribosomes. Carboxymethyl cellulose chromatography of the A. bisexualis nuclear basic proteins resolved three distinct fractions. Gel electrophoresis of the CM cellulose fractions indicated heterogeneity of each fraction. Amino acid analysis of the CM fractions showed that they were all lysine-rich and meet the basisity requirements of histones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00417454
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  • 2
    Electronic Resource
    Electronic Resource
    Edward F. Assmus, Jr. (1931–1998) (1999)
    Springer
    Designs, codes and cryptography 17 (1999), S. 7-11 
    Details
    ISSN: 1573-7586
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008338101197
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  • 3
    Electronic Resource
    Electronic Resource
    Codes of Steiner triple and quadruple systems (1993)
    Springer
    Designs, codes and cryptography 3 (1993), S. 117-125 
    Details
    ISSN: 1573-7586
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract The code over a finite fieldF q of orderq of a design is the subspace spanned by the incidence vectors of the blocks. It is shown here that if the design is a Steiner triple system on ν points, and if the integerd is such that 2 d −1≤ν〈2 d+1−1, then the binary code of the design contains a subcode that can be shortened to the binary Hamming codeH d of length 2 d −1. Similarly the binary code of any Steiner quadruple system on ν+1 points contains a subcode that can be shortened to the Reed-Muller code ℜ(d−2,d) of orderd−2 and length 2 d , whered is as above.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01388410
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  • 4
    Electronic Resource
    Electronic Resource
    On an infinite class of Steiner systems constructed from affine spaces (1986)
    Springer
    Archiv der Mathematik 47 (1986), S. 376-378 
    Details
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01191366
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  • 5
    Electronic Resource
    Electronic Resource
    Translation planes and derivation sets (1990)
    Springer
    Journal of geometry 37 (1990), S. 3-16 
    Details
    ISSN: 1420-8997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Using ideas from algebraic coding theory, a general notion of aderivation set for a projective plane is introduced. Certain geometric codes are used to locate such sets. These codes also lead to upper bounds for thep-ranks of incidence matrices of translation planes in terms of the dimensions of the associated codes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01230354
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  • 6
    Electronic Resource
    Electronic Resource
    Alternative strategies in fungal race-specific parasitism (1981)
    Springer
    Theoretical and applied genetics 59 (1981), S. 381-390 
    Details
    ISSN: 1432-2242
    Keywords: Race-specific resistance strategies ; Cerealrusts and mildew ; Gene accumulation versus diversification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Based on the gene-for-gene relation in race-specific resistance versus virulence, racial complexity of a pathogen population can be revealed by using host lines each with a single gene for resistance as detector. Such inventories of cereal rusts have shown: i. Genes for virulence may have pleiotropic effects acting on general fitness and their relative prevalence. ii. Genes for virulence are, as most other genes, dependent on genetic background for their general fitness. iii. Specific and general gene erosion in a pathogen population submitted to the assortative function of a race-specific host selection pressure is proportional to the degree of existing recombination and thus ultimately upon mode of reproduction (sexual or asexual). iv. Genetic storage capacity is dependent on ploidy constitution. v. Host alternation for safe annual survival favours a genetic system able to store temporarily unnecessary genes for virulence. — Due to shifting circumstances, pathogens like rusts will even inside the same forma specialis show different strategies. The trend may lead to a process of stabilizing selection and dependence on immediate and provisional flexibility just as typical of true haploids. It may lead to a pattern of preparedness: i.e. accumulation of ‘unnecessary’ genes for virulence. In the latter case, the modern concept of gene diversification in breeding for disease resistance is less effective. In the former case, gene accumulation can also work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276454
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  • 7
    Electronic Resource
    Electronic Resource
    übergangswahrscheinlichkeiten in den Nebenserien von Na (1933)
    Springer
    The European physical journal 85 (1933), S. 565-567 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Mittels Emissionsmessungen am Lichtbogen, dessen Temperatur aus Banden bestimmt wird, sind einige übergangswahrscheinlichkeiten in den Nebenserien von Na bestimmt. Dabei werden Bogen verschiedener Temperatur benutzt. Einige vorlÄufige Resultate werden mitgeteilt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01331000
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  • 8
    Electronic Resource
    Electronic Resource
    Small sets of even type and codewords (1998)
    Springer
    Journal of geometry 61 (1998), S. 83-104 
    Details
    ISSN: 1420-8997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We examine some geometric configurations of points in designs that give rise to vectors in the codes associated with the designs. In particular we look at small sets of points in projective planes of even order that are met evenly by all the lines of the plane, and find vectors of small weight in the binary hull and in the code's orthogonal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01237498
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  • 9
    Electronic Resource
    Electronic Resource
    Extendable Steiner designs (1992)
    Springer
    Geometriae dedicata 41 (1992), S. 201-205 
    Details
    ISSN: 1572-9168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Let D be a Steiner t-design, where t⩾2, with a collection C of subdesigns such that each member of C is a Steiner t-design whose blocks are blocks of D, and with the property that any (t+1) points of D are together in the point set of a unique member of C. It is shown that if every member of C can be extended to a (t+1)-design, then D can also be extended. The construction described is a development of ideas originally formulated in Assmus and Key [2].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00182420
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  • 10
    Electronic Resource
    Electronic Resource
    Some maximal subgroups of PSL(n, q), n⩾3, q=2 r (1975)
    Springer
    Geometriae dedicata 4 (1975), S. 377-386 
    Details
    ISSN: 1572-9168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00148770
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