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  • Polymer and Materials Science  (2)
  • %G+C  (1)
  • 35P20  (1)
  • Egg production  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Measurement of bacterial growth rates in soil
    Amsterdam : Elsevier
    Applied Soil Ecology 1 (1994), S. 277-290 
    Details
    ISSN: 0929-1393
    Keywords: %G+C ; Microbial growth ; Soil ; Specific respiration ; Thymidine incorporation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0929-1393(94)90005-1
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Fractals, trees and the Neumann Laplacian (1993)
    Springer
    Mathematische Annalen 296 (1993), S. 493-527 
    Details
    ISSN: 1432-1807
    Keywords: 35P20 ; 46E35 ; 47B06
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01445117
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic selection in presence of pathogens such as the lymphoid leukosis virus: computer simulation (1984)
    Springer
    Theoretical and applied genetics 68 (1984), S. 397-413 
    Details
    ISSN: 1432-2242
    Keywords: Quantitative genetics ; Selection response ; Chickens ; Lymphoid leukosis ; Egg production ; Computer simulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A computer model was developed to simulate the population dynamics involved when selection is for a trait influenced by the presence of a pathogen in addition to quantitative genetic factors. The lymphoid leukosis virus is such a pathogen, when selection is for egg production in chickens. It is transmitted congenitally from dam to offspring and horizontally from one individual to another. For these simulations, individual selection for high performance in the trait influenced by the pathogen was more effective than family selection for removing infected individuals from populations. The resulting reduction in the incidence of infected individuals in following generations made the overall response to individual selection greater than for family selection. However, the virus would remain in most populations due to horizontal transmission to individuals which later transmit the virus to their offspring. These horizontally infected individuals would not be eliminated in the selection process because their egg production was assumed to be less reduced than that of congenitally infected birds. These simulation results seem to mimic certain experimental results which heretofore have been difficult to explain since they were not consistent with quantitative genetic theoretical expectations from selection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254807
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Boron-nitrogen polymers. I. Mechanistic studies of borazine pyrolyses (1986)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 24 (1986), S. 173-185 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Pyrolyses of B-triamino-N-triphenyl-, B-triamino-N-trimethyl-, and B-trianilino-borazines were performed between 150 and 300°C. Initial stages of degradation were accompanied by liberation of ammonia in addition to the expected aniline or methylamine; this was most pronounced for the methyl borazine. Aniline elimination proceeded more readily with the B-anilino than the B-amino isomer. Data obtained support a ring opening mechanism resulting in telomerizaton accompanied by aniline liberation and formation first of singly then doubly bridged dimers and finally doubly bridged tetramers. Thermal exposure up to 1000°C failed to give pure boron nitride; carbon was invariably retained.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1986.080240116
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Reactivities of acrylates and methacrylates (1967)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 5 (1967), S. 799-802 
    Details
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1967.110050912
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    Paper (German National Licenses)
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