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  • 2000-2004  (1)
  • 1985-1989  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Surveying and screening preschool language development in community-focused intervention programmes: a review of instruments (2002)
    Oxford, UK : Blackwell Science Ltd.
    Child 28 (2002), S. 0 
    Details
    ISSN: 1365-2214
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Preschool language intervention has come increasingly to the fore with the development of community-focused interventions including Sure Start in the UK. Successful intervention methods may well be incorporated into mainstream service delivery, especially in areas of disadvantage. The question of whether such interventions will work and of their impact on children’s language development has focused attention on measures of language. This paper distinguishes two reasons for measuring language development: (1) surveying language; and (2) screening language. It goes on to suggest a set of criteria for selecting instruments for these applications. The review includes a wide range of language assessment instruments for preschool children and examines those most likely to be suitable. It suggests a role for paraprofessionals in survey and screening and argues that this may be advantageous in terms of reaching families and thereby achieving high levels of coverage of a population group. Finally, there is a discussion of the implications of such measures in community-focused preschool interventions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2214.2002.00270.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of Isoproterenol on Synaptic Ribbons in Pinealocytes of the Rat and C57BL/6J Mouse (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of pineal research 7 (1989), S. 0 
    Details
    ISSN: 1600-079X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Synaptic ribbons (SR) in melatonin-deficient pinealocytes of the C57BIV6J mouse were quantitatively compared to SR in pinealocytes of the rat after β-adrenergic receptor activation by isoproterenol. Two populations of SR comprising synaptic spherules (SRsp) and synaptic rods (SRr) were described in both the mouse and the rat, but species differences existed in the ratio of SRr to SRsp. Isoproterenol caused a significant increase in frequency of SR of the rat but had little or no effect on SR populations in the mouse. It is unlikely that β-adrenergic receptors are absent on mouse pinealocytes or were not activated since isoproterenol elevated plasma renin concentrations indicating activation of β-adrenergic receptors. Furthermore the pineal of both species receives heavy sympathetic input. These findings indicate that the role and regulation of pinealocyte SR are complex and are functionally linked to β-adrenergic receptors as well as other mechanisms related to the production of melatonin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-079X.1989.tb00453.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The ecological importance of insect frass: allelopathy in eucalypts (1985)
    Springer
    Oecologia 67 (1985), S. 118-120 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Our previously published experiments on allelopathic effects of insect frass in Eucalyptus communities (Silander et al. 1983) have been criticized on the grounds that our estimates of annual frass production were exscessive (Ohmart 1985). However, we spanned the entire array of estimates of frass fall available from eucalypt communities, and we demonstrated allelopathic effects at even the lowest levels suggested by Ohmart. We suggest that average values of frass fall per hectare are irrelevant because they ignore both large scale variation among sites in time and space, and small scale variation in patchiness of frass accumulation. At the ecological scales relevant to germinating seeds, frass concentrations in local pockets may be considerably higher than the averages calculated for the entire ground surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00378461
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of experimental design and nitrogen on cabbage butterfly oviposition (1989)
    Springer
    Oecologia 80 (1989), S. 211-214 
    Details
    ISSN: 1432-1939
    Keywords: Pieris rapae ; Nitrogen ; Brassica ; Insect-plant interactions ; Nutritional ecology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary To test the prediction that P. rapae egg densities increase with N fertilizer in large-scale systems as they do in model systems with potted plants, we used field experiments with Brassica oleracea var. acephala L. (collards and kale) planted in pots or large field plots, and treated with different levels of nitrogen fertilizer. In small-scale field experiments with potted kale and collards, egg densities were significantly higher on plants with high N than those with low N. But in larger scale experiments with field-grown collards, average seasonal P. rapae egg densities were not significantly correlated with leaf N content. These differences among experiments did not depend on the magnitude of the difference in foliage N levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00380153
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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