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  • Electronic Resource  (11)
  • 2005-2009
  • 2000-2004  (11)
  • 2002  (11)
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  • Electronic Resource  (11)
Years
  • 2005-2009
  • 2000-2004  (11)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Facilitating factors and barriers to the implementation of intensive home-based behavioural intervention for young children with autism (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: Background Although international interest in intensive home-based early behavioural intervention for children with autism is increasing, there is little or no published research on the experiences of families conducting these programmes.Methods One hundred and forty-one UK parents conducting Lovaas-style interventions with their young child with autism were asked to identify factors that acted as facilitative factors and barriers to the implementation of these programmes. Parents responded to written questions contained within a questionnaire survey, and their responses were subjected to a content analysis procedure.Results Several of the facilitative factors and barriers were found to be similar. For example, a supportive therapy team was the most frequently cited facilitative factor, and problems recruiting and maintaining a suitable team was the most frequently reported barrier. Other factors seemed to be more independent constructs. For example, an important barrier was the lack of time and personal energy, but plenty of time and energy was not cited as a facilitative factor.Conclusions The practical implications of these results for families and for services supporting families engaged in intensive early behavioural intervention are discussed. In addition, more general implications for the designers of behavioural intervention programmes are identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2214.2002.00251.x
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  • 2
    Electronic Resource
    Electronic Resource
    Development of clinical practice guidelines for dentists: methods for topic selection (2002)
    Oxford, UK : Munksgaard International Publishers
    Community dentistry and oral epidemiology 30 (2002), S. 0 
    Details
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract –Objectives: The aim of this study was to compare four methods for assessing the preferences of the dental profession for topics to be considered for the development of clinical practice guidelines.Methods:  The methods were: (1) a survey among dentists, (2) an analysis of topics discussed in dental peer groups, and (3) screening of dental journals. A fourth method was obtained from method number 3. The frequencies of the reported topics were calculated for each of the methods. For the fourth method, the number of publications per topic were plotted against the year of publication, and the slope of the linear regression line was used as an indicator. Within each of the four methods, the topics were ranked according to the frequency in which they were reported, and to the slope value. The reliability of the methods was tested by the “item-rest sum correlation”, which is the correlation of the rank positions of one method with the sum of the rank positions obtained by the remaining three methods.Results:  In using all methods, a total of 1027 topics were obtained. Reclassification resulted in 34 topics. Moderate item-rest sum correlations ranging from 0.34 to 0.48 were found for all methods, indicating that the rank order of every method moderately predicts the sum of the rank orders obtained by all other methods. The topic ‘prevention of cross-infection’ had the highest overall rank position.Conclusion:  It is concluded that the four applied methods appeared to provide a consistent ranking of potential topics. In view of the fact that the questionnaire method is generally applicable, this method should be preferred for assessing dentists' preferences for topics to be considered for the development of clinical practice guidelines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0528.2002.00060.x
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  • 3
    Electronic Resource
    Electronic Resource
    Scaling theory for the free-energy barrier to homogeneous nucleation of a noncritical phase near a critical point (2002)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 116 (2002), S. 2922-2927 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Homogeneous nucleation of a new phase near an Ising-type critical point of another phase transition is studied. A scaling analysis shows that the free energy barrier to nucleation contains a singular term with the same scaling as the order parameter associated with the critical point. The total magnetization of the nucleus scales as the response function and so it diverges. Vapor–liquid critical points are in the Ising universality class and so our results imply that near such a critical point the number of molecules in a nucleus of another phase, such as a crystalline phase, diverges as the isothermal compressibility. The case where symmetry prevents coupling between the nucleus and the order parameter is also considered. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1436477
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  • 4
    Electronic Resource
    Electronic Resource
    The impact of regular ecstasy use on memory function (2002)
    Oxford, UK : Blackwell Science Ltd
    Addiction 97 (2002), S. 0 
    Details
    ISSN: 1360-0443
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Aim  To assess memory impairment in a group of regular users of ecstasy compared with a group of regular users of cannabis, after accounting for possible confounding factors such as other drug use, premorbid intelligence and psychopathology.METHOD  Comparative and regression analysis was used to determine the presence or absence of a difference in memory function between 40 regular ecstasy users and 37 regular users of cannabis, who were interviewed at the National Drug and Alcohol Research Centre in Sydney, Australia. Regression analysis was used to find associations between life-time exposure to ecstasy use and memory performance. Memory function was assessed using an age-standardized memory test. Other scales were used to assess premorbid intelligence, physical and psychological health, drug withdrawal and other drug use.Results  Initial comparative analysis showed a trend towards a significantly poorer performance by the regular ecstasy-using group on the ‘auditory immediate memory’ and ‘auditory delayed memory’ indices. When regression analysis was performed an estimate of verbal intelligence was found to be the most predictive of most memory indices including ‘auditory immediate memory’ and ‘auditory delayed memory’. Life-time exposure to ecstasy was not predictive of the memory indices. The current frequency of cannabis use was found to have some predictive effect for immediate and delayed visual memory.Conclusion  This study does not show memory impairment in a group of ecstasy users relative to cannabis using controls. The previously reported association of life-time exposure to ecstasy and memory was not found. The findings may indicate a confounding role of cannabis use, as has been recently reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1360-0443.2002.00213.x
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  • 5
    Electronic Resource
    Electronic Resource
    Beneficial bacteria of the periodontium (2002)
    Oxford, UK : Munksgaard International Publishers
    Periodontology 2000 30 (2002), S. 0 
    Details
    ISSN: 1600-0757
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0757.2002.03004.x
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  • 6
    Electronic Resource
    Electronic Resource
    EVALUATING THE INFLUENCE OF SOURCE BASINS ON DOWNSTREAM WATER QUALITY IN THE MISSISSIPPI RIVER (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 38 (2002), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : Chemical variability in the Mississippi River during water years 1989 to 1998 was evaluated using stream discharge and water-quality data in conjunction with the DAFLOW/BLTM hydraulic model. Model simulations were used to identify subbasin contributions of water and chemical constituents to the Mississippi River upstream from its confluence with the Ohio and the Mississippi River and at the Atchafalaya Diversion in Louisiana. Concentrations of dissolved solids, sodium, and sulfate at the Thebes site showed a general decreasing trend, and concentrations of silica and nitrate showed a general increasing trend as the percentage of discharge from the Mississippi River upstream from Grafton increased. Concentrations of most chemical constituents in the Mississippi River at the Atchafalaya Diversion exhibited a decreasing trend as the percentage of water from the Ohio River increased. Regression models were used to evaluate the importance of the source of water to the water chemistry in the Mississippi River at Thebes and the Atchafalaya Diversion. The addition of terms in regression equations to account for the percent of water from sub-basins improved coefficients of determination for predicting chemical concentrations by as much as nine percent at the Thebes site and by as much as 48 percent at the Atchafalaya Diversion site. The addition of source-water terms to regression equations increased the estimated annual loads of nitrate and silica delivered from the Mississippi River Basin to the Gulf of Mexico by as much as 14 and 13 percent, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.2002.tb00998.x
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  • 7
    Electronic Resource
    Electronic Resource
    The Rett Syndrome Behaviour Questionnaire (RSBQ): refining the behavioural phenotype of Rett syndrome (2002)
    Oxford, UK : Blackwell Publishers
    The @journal of child psychology and psychiatry 43 (2002), S. 0 
    Details
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Background: Although physical features, including loss of hand skills, deceleration of head growth, spasticity and scoliosis, are cardinal features of Rett syndrome (RS), a number of behavioural features are also associated with the disorder, including hand stereotypies, hyperventilation and breath holding. No study has tested the specificity of these behavioural features to individuals with RS, compared to individuals with severe to profound mental retardation (SMR).Method: A novel checklist of characteristic RS behavioural and emotional features, the Rett Syndrome Behaviour Questionnaire (RSBQ), was developed to test the type and specificity of behavioural features of RS against those found in girls with SMR.Results: After controlling for the effects of RS-related physical disabilities, the RSBQ discriminated between the groups. Some aspects of the behaviours found to be specific to RS are included in the necessary or supportive RS diagnostic criteria, notably hand behaviours and breathing problems. Additional behavioural features were also more frequently reported in the RS than the SMR group, including mood fluctuations and signs of fear/anxiety, inconsolable crying and screaming at night, and repetitive mouth and tongue movements and grimacing.Conclusions: Full validation of the scale requires confirmation of its discriminatory power and reliability with independent samples of individuals with RS and SMR. Further delineation of the specific profile of behaviours seen in RS may help in identification of the function of the MECP2 gene and in improved differential diagnosis and management of individuals with RS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1469-7610.00236
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  • 8
    Electronic Resource
    Electronic Resource
    Ecology Darwin's naturalization hypothesis challenged (2002)
    [s.l.] : Nature Publishing Group
    Nature 417 (2002), S. 608-609 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Naturalized plants can have a significant ecological and economic impact, yet they comprise only a fraction of the plant species introduced into new areas by humans. Darwin proposed that introduced plant species will be less likely to establish a self-sustaining wild population in places with ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/417608a
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  • 9
    Electronic Resource
    Electronic Resource
    Paired gill slits in a fossil with a calcite skeleton (2002)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 417 (2002), S. 841-844 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The chordates, hemichordates (such as acorn worms) and echinoderms (such as starfish) comprise the group Deuterostomia, well established as monophyletic. Among extant deuterostomes, a skeleton in which each plate has the crystallographic structure of a single crystal of calcite is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature00805
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  • 10
    Electronic Resource
    Electronic Resource
    Abscisic acid, phaseic acid and gibberellin contents associated with dormancy and germination in barley (2002)
    Oxford, UK : Blackwell Science, Ltd
    Physiologia plantarum 115 (2002), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Analyses of abscisic acid (ABA), ent-kaurenoids and gibberellins (GAs) showed that there were major changes in the contents of these compounds associated with germination of after-ripened barley (Hordeum vulgare cv. Schooner and cv. Proctor) grain but not in hydrated dormant grain. Embryos from dormant and after-ripened dry grain contained similar amounts of ABA, of ent-kaurenoids and of GAs, determined by gas chromatography-mass spectrometry-selected ion monitoring. In embryos of after-ripened grain, ABA content decreased rapidly after hydration and ABA appeared to be metabolized (inactivated) to phaseic acid (PA) rather than diffusing into the endosperm or the surrounding medium as previously thought. Similar changes in ABA occurred in hydrated dormant grain during germination in darkness. Accumulation of ent-kaurenoids and GAs, including GA1, the first biologically active GA in the early 13-hydroxylation biosynthetic pathway, occurred to a much greater extent in after-ripened than in dormant grain and these changes occurred mainly after 18 h of hydration when ABA had already decreased and germination was occurring. The block in ent-kaurenoid and GA synthesis in dormant grain appeared to occur prior to ent-kaurene in the biosynthetic pathway. These results are consistent with the view that ABA is the primary effector of dormancy and that after-ripening involves the development of the ability to reduce the amount of ABA quickly following hydration. Accumulation of GAs does not appear to be causally related to loss of dormancy but it does appear to be related to germination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1399-3054.2002.1150313.x
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