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  • 1
    Electronic Resource
    Electronic Resource
    Determination of Benzaldehyde in Benzyl Alcohol (1949)
    s.l. : American Chemical Society
    Analytical chemistry 21 (1949), S. 989-991 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60032a033
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Quantitative Infrared Determination of Trace Impurities in Solids Using Fractional Crystallization Technique (1955)
    s.l. : American Chemical Society
    Analytical chemistry 27 (1955), S. 12-15 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60097a004
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of simulated deposition of dredged material on structure of nematode assemblages – the role of contamination (2000)
    Springer
    Marine biology 137 (2000), S. 613-622 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Certain criteria must be satisfied before a licence for the deposition of dredged material at sea in UK waters is issued. These relate to the chemical quality of the material, the quantity to be disposed of, its nature and origin, and its predicted impacts at the disposal site. Although chemical analyses of dredgings provide an indication of the relative degrees of contamination, they do not provide a measure of any resultant biological effects. A laboratory experiment was therefore designed to investigate the effects of the degree of contamination and the role of burial associated with the deposition of dredged material on the meiofauna. Estuarine nematode assemblages were exposed to the simulated deposition of uncontaminated, oxic intertidal mud and anoxic sediments from the Mersey and the Tees estuaries, both of which were contaminated with heavy metals. The sediments, which differed little in terms of grain size, were deposited in two different frequencies. Nematodes showed a clear species-specific response to the experimental treatments, depending on the frequency of deposition and the chemical quality of the deposited material (e.g. metal and oxygen concentrations). The response of nematode assemblages was mainly determined by the deposition frequency rather than the type of sediment or the degree of contamination. The deposition of sediment in one large dose at the beginning of the experiment caused more severe changes in assemblage structure than the same quantity deposited in several smaller doses. Although lower than in uncontaminated mud, relatively high migration and survival rates in the contaminated high-frequency treatments were observed. This may have been due to reduced bioavailability of metals and the tolerance of estuarine nematodes to both metal contamination and the deposition of small sediment volumes at regular intervals. The observed trends demonstrate the potential of small-scale laboratory experiments for testing the quality of contaminated dredged material at the licensing stage, i.e. prior to the issue of a disposal licence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270000386
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of simulated deposition of dredged material on structure of nematode assemblages – the role of burial (2000)
    Springer
    Marine biology 136 (2000), S. 519-530 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A microcosm experiment was designed to evaluate the effects of the simulated deposition of uncontaminated dredged material on nematode assemblages from estuarine intertidal mud. The main objective was to assess the ability of nematodes to migrate vertically into native muddy and non-native sandy sediment deposited in different amounts and frequencies. Results from univariate and graphical methods of data-evaluation revealed that nematodes were capable of migrating over a wide depth range from the bottom mud layer into the top layer of deposited sand and mud. A diverse mud assemblage of nematodes was able to survive in non-native fine sand for the experimental period of 2 mo. Multivariate analyses showed that the amount of deposit and the frequency of deposition were interactive factors. A high amount of sediment deposited once at the beginning of the experiment caused more severe changes in assemblage structure than the same amount deposited in more frequent but smaller doses. The response of most species to the experimental treatments appeared to be an integrated response to the enhancing effect of food input accompanying the deposit and the negative effect of burial. Upward migration of nematodes is a process which has often been underestimated in its importance for recolonisation of areas where uncontaminated dredged material is deposited. Active migration of nematodes can significantly affect the recovery of a dredgings disposal site.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050712
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    The η-invariant and wall non-additivity (1984)
    Springer
    Mathematische Annalen 267 (1984), S. 449-452 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01455962
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The question of polyploidy in the Salmonidae (1964)
    Springer
    Chromosoma 15 (1964), S. 275-279 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00321512
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Chiasma frequency and the disjunction of interchange associations in rye (1965)
    Springer
    Chromosoma 16 (1965), S. 500-510 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary From comparisons within plants and between plants it is established that: 1. Variation in the disjunction frequencies of interchange associations in rye is dependent upon the chiasma frequency of the interchange associations. The higher the chiasma frequency of the interchange associations the lower is the probability of zig-zag disjunctional arrangement. 2. As would be expected from the above results genotypes with higher chiasma frequencies tend to show a lower frequency of disjunction. 3. There is, as well, a component of variation in disjunction that is partly independent of chiasma frequency. That this component of variation is also controlled by the genotype is established from observations of differences in disjunction frequencies within p.m.c. of identical chiasma frequencies in different genotypes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00343177
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    The chromosomes of Salmo salar (1967)
    Springer
    Chromosoma 21 (1967), S. 472-474 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A new chromosome number, 2n=58, is reported for Salmo solar, the Atlantic salmon. The complement comprises 8 pairs of metacentrics, 21 pairs of acrocentrics. The question of variation in chromosome numbers for different salmon stocks is very briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00336954
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Chromosome size in salmon and trout (1967)
    Springer
    Chromosoma 21 (1967), S. 475-477 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The chromosomes of the Atlantic salmon, Salmo salar (2n=58) are, on average, larger than those of the trout, S. trutta (2n=80). If the difference in chromosome size represents a permanent change in chromosome structure as between the two species the expectation is that the size difference between salmon and trout chromosomes will be maintained in the hybrid. If, alternatively, the size difference between salmon and trout chromosomes is genotypically determined the difference will not be maintained in nuclei of hybrid genotype. Measurements of a specific chromosome, S, of the salmon complement and of another, S 1, of the trout complement in nuclei of parent species and of the hybrid show that the difference in size is maintained in hybrid nuclei. It is concluded therefore that the size difference between salmon and trout chromosomes is due to structural change rather than to genotypic control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00336955
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    The influence of B-chromosomes upon the nuclear phenotype in rye (1968)
    Springer
    Chromosoma 24 (1968), S. 158-176 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Quantitative studies on the ffects of B-chromosomes in rye upon variation of the nuclear phenotype showed that B's: (i) influence the phenotype of the A-chromosomes at metaphase of mitosis, (ii) increase the amount of nuclear DNA in proportion to their number present, (iii) have a structural organisation different to that of the A-chromosomes, (iv) influence the structure of the interphase nucleus in respect of non-permanent chromosome material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00285199
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    Paper (German National Licenses)
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