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  • 1
    Digitale Medien
    Digitale Medien
    The Liverpool Visual Assessment Team: 10 years' experience (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Child 12 (1986), S. 0 
    Details
    ISSN: 1365-2214
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Psychologie
    Notizen: Summary The Liverpool Visual Assessment Team (VAT) was established in 1975 as a multidisciplinary service for the evaluation of the disabilities of visually handicapped children. Team membership and patterns of practice are described. Two hundred and fifty-four children have now been seen by the VAT over a 10-year period. The mean age of referral was 4–2 years; only 46% of the children had an isolated visual handicap. The aetiology of disabilities was known in 58% of the children. Genetically determined visual handicap was likely to be associated with normal intelligence. Ophthalmological diagnoses arc described. In comparison to what would he predicted, there were fewer children with retinopathy of prematurity and more with cerebral (cortical) blindness. The educational needs and placements of the children are described and the implications of the implementation of the 1981 Education Act for visually handicapped children are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2214.1986.tb00485.x
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  • 2
    Digitale Medien
    Digitale Medien
    Visual impairment in childhood: insights from a community-based survey (2003)
    Oxford, UK : Blackwell Publishing Ltd.
    Child 29 (2003), S. 0 
    Details
    ISSN: 1365-2214
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Psychologie
    Notizen: Background  The concept of visual impairment (VI) in childhood has changed over the last 30 years. There has been a decrease in the number of children with an isolated visual problem and an increase in the numbers with VI and coexisting neurological disability. This study aimed to produce a profile of VI in childhood with a view to informing future services and to raise awareness of the need for comprehensive assessment including developmental remediation and educational advice.Methods  Children with a VI were identified from multiple sources including hospital- and community-based paediatricians and statutory blind registers.Results  Seventy-six children with a VI were identified giving a childhood prevalence of 1.61 per 1000. Thirty-two per cent had a normal pattern of development. Global delays/severe learning difficulty were found in 43%. Only 21% of the children had an isolated VI. Additional medical problems were present in 79% of which cerebral palsy, occurring in 33%, was the most common. Nine per cent of the children were classified as totally blind. Cortical visual impairment was diagnosed in 45%. Twenty-two per cent of the children were registered blind or partially sighted.Conclusions  Most cases of VI in children did not appear on the statutory blind or partially sighted registers, thus these have limited value for service development. The implications for practice highlight the need for early assessment and advice from a co-ordinated team to optimize visual potential in childhood.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2214.2003.00369.x
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  • 3
    Digitale Medien
    Digitale Medien
    Cycloadditions and reactivity of 2-methoxyallyl halides (1973)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 95 (1973), S. 1338-1340 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja00785a057
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  • 4
    Digitale Medien
    Digitale Medien
    One stage synthesis of bicyclo[3.2.2]nona-6,8-dien-3-ones. Silver trifluoroacetate induced reaction of 2-methoxyallyl bromide with arenes (1974)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 96 (1974), S. 4597-4603 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja00821a040
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  • 5
    Digitale Medien
    Digitale Medien
    Does the western Irish Sea gyre influence the distribution of pelagic juvenile fish? (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 51 (1997), S. 0 
    Details
    ISSN: 1095-8649
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: The western Irish Sea is an important spawning and nursery ground for many commercially exploited fish. Spawning begins in the Irish coastal regions in early spring, and moves offshore as the season develops. As a result of the onset of seasonal heating in spring, stratification isolates a dome of cold bottom winter water in the deep (〉100 m) basin of the western Irish Sea. The resultant density fields drive a cyclonic gyre which dominates the circulation of the region during late spring and summer and is characterized by anticlockwise current speeds which exceed 0.2 ms–1, after removal of tides. Surveys of pelagic juvenile (0-group) fish in 1994, 1995 and 1996, showed that they were coincident with the centre of the gyre. Physical data from 1994 and 1995, were used to describe the horizontal and vertical structure of the water column and the associated circulation regime. The behaviour and swimming speeds of pelagic juvenile fish were insufficient to explain their apparent shift in abundance away from the coast to the central western Irish Sea. Drifter and current data suggested that their entrainment into the gyre could provide both the transport and retention mechanisms.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1095-8649.1997.tb06100.x
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  • 6
    Digitale Medien
    Digitale Medien
    Rapid On-Slide Location and Analysis of Enriched Fetal Nucleated Cells from Maternal Blood (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 731 (1994), S. 0 
    Details
    ISSN: 1749-6632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1749-6632.1994.tb55757.x
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  • 7
    Digitale Medien
    Digitale Medien
    Reversibility and biological machines (1975)
    [s.l.] : Nature Publishing Group
    Nature 257 (1975), S. 72-72 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] GRAY1, in discussing reversibility and biological machines, applied a formula derived by Brillouin2, describing the energy required to determine the positional limits of a microscopic system, to the muscle cross bridge. A result of his analysis is that the cross bridge is too small to be controlled ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/257072a0
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  • 8
    Digitale Medien
    Digitale Medien
    Some characteristics of r.f. sputtered CuInS2 thin films (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1748-1753 
    Details
    ISSN: 0392-6737
    Schlagwort(e): Electronic properties of thin films
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Beschreibung / Inhaltsverzeichnis: Riassunto Si sono ottenuti dati elettrici da sottili film di CuInS2 del tipop temprati e anodizzati su un vasto intervallo di temperature. Un'analisi dei dati della mobilità della buca rispetto alla temperatura indica che i portatori di carica sono prevalentemente diffusi da impurità neutre e ionizzate e da vibrazioni del modo acustico.
    Kurzfassung: Резюме Получаются злектрические данные для напыленных и отожженных тонких пленок CuInS2 p-типа. Анализ зависимости подвижности дырок от температуры указывает, что носители зарядов преимущественно рассеиваются на нейтральных и ионизованных примесях и на акустических колебаниях.
    Notizen: Summary Electrical data from sputtered and annealedp-type CuInS2 thin films have been obtained over a range of temperatures. An analysis of hole mobilityvs. temperature data indicates that the charge carriers are predominantly scattered by neutral and ionized impurities and by acoustic-mode vibrations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02457861
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  • 9
    Digitale Medien
    Digitale Medien
    Optical spectroscopy of excitonic states in CuInSe2 (2000)
    Springer
    Semiconductors 34 (2000), S. 534-537 
    Details
    ISSN: 1063-7826
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik
    Notizen: Abstract Optical properties of structurally perfect CuInSe2 single crystals were studied in the temperature range of 4.2–300 K with the use of photoluminescence, optical absorption, optical reflection, and wavelength-modulated optical reflection (WMOR). The intense lines of free excitons A (∼1.0414 eV) and B (∼1.0449 eV) with a half-width of ∼0.7 meV at 4.2 K are found to be related to two extrema of valence band split by a crystal field. The excitons emission line C (∼1.2779 eV) in WMOR spectra are related to a lower valence band split-off by spin-orbit interaction. Within the context of the quasi-cubic Hopfield model, the parameters of valence band splitting ΔCF=5.2 meV and ΔSO=234.7 meV defined by the crystal and spin-orbit interaction, respectively, are calculated. In the region of the fundamental absorption edge, the lines of bound excitons are found with a half-width ∼0.3 meV that is indicative of a high quality of grown CuInSe2 crystals.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1134/1.1188022
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  • 10
    Digitale Medien
    Digitale Medien
    A mechanism for horizontal zooplankton transport by vertical migration in tidal currents (1991)
    Springer
    Marine biology 111 (1991), S. 485-492 
    Details
    ISSN: 1432-1793
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A mechanism is proposed by which net horizontal transport can be induced in an organism which migrates vertically in a purely oscillatory, vertically sheared tidal current. The mechanism contains two elements. First, for all reasonable tidal current profiles, net horizontal transport is induced in any organism which migrates vertically with a period which is an exact multiple of the tidal period. (This is the basis for the widelyknown process of selective tidal stream transport where the migration period and the tidal period are exactly equal.) The second element in the new mechanism is the observation that diel migration, the most common form of vertical migration, has a period of 24 h and is therefore an exact multiple of the principal solar semi-diurnal tidal constituent (S2) which has a period of 12 h. This relation between the S2 and diel migration periods stems from the fact that both phenomena are independently locked to the solar cycle. Diel vertical migration can therefore interact with the S2 tidal current constituent to induce longterm horizontal transport in migrating organisms. For reasonable tidal current and vertical migration parameters it is found that horizontal transport rates of 4 km d−1 are possible. The direction of net transport depends upon the phase of the S2 tidal current relative to local noon. The hypothesis is therefore proposed that geographical variation in S2 phase is a factor responsible for creating regions which are either retention-favorable or otherwise for diel-migrating marine organisms.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01319422
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