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  • 2000-2004  (3)
  • 1985-1989  (4)
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  • 1
    Digitale Medien
    Digitale Medien
    Buried heterostructure lasers by silicon implanted, impurity induced disordering (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 1401-1403 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Buried heterostructure lasers have been fabricated using impurity induced disordering from an implanted Si diffusion source. The diffused Si extends over 1 μm deep through the active region where the quantum wells are partially homogenized with the barrier and cladding layers to produce a lower refractive index and higher band-gap material. The resulting real refractive index waveguide exhibits single longitudinal and transverse mode behavior to greater than 20 mW for a 4-μm-wide waveguide.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.98689
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  • 2
    Digitale Medien
    Digitale Medien
    CERVICAL CYTOLOGY EQA—THE NORTHERN EXPERIENCE (2001)
    Oxford UK : Blackwell Science Ltd
    Cytopathology 12 (2001), S. 0 
    Details
    ISSN: 1365-2303
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2303.2001.0360a.x
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  • 3
    Digitale Medien
    Digitale Medien
    Cervical cytology EQA – the Northern experience (2001)
    Oxford UK : Blackwell Science Ltd
    Cytopathology 12 (2001), S. 0 
    Details
    ISSN: 1365-2303
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Cervical cytology EQA – the Northern experience The experience of the Northern region using the 1995 draft National Gynaecological Cervical Cytology External Quality Assurance (EQA) Scheme is given. Over three rounds, 390 staff reporting Cervical Cytology took part, and using a cumulative non-numeric marking scheme, five participants were deemed ‘unacceptable’ at the end of three rounds. A total of 3450 responses were given to the 40 test slides used, with an overall false-positive rate of 5.9% and a false-negative rate of 1.4%. Grading was assessed for pathologists, and many appeared to perform badly by accumulating discrepancies for non-clinically-significant grading differences. The problems of slide selection/staining and grading consistency/accuracy are highlighted. This EQA scheme serves its dual function of education and identifying poor performance. It must be seen as a viable EQA scheme, although other options must be considered, given advances in technology.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2303.2001.00306.x
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  • 4
    Digitale Medien
    Digitale Medien
    STATISTICAL CONCEPTS AND THEIR APPLICATION IN PHOTOGRAMMETRY AND SURVEYING (1988)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 12 (1988), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: This paper was prepared as supporting documentation for a tutorial given by the authors under Photogrammetric Society auspices. The authors do not make any claims of novelty or innovation but they feel that the information contained in the paper will provide useful study material, especially for practitioners of photogrammetry and surveying. The following topics are covered: functional and stochastic models; the least squares process; statistical testing; optimal design methods; and numerical examples in the design of a horizontal control network and of a close range photogrammetric survey.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1988.tb00612.x
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  • 5
    Digitale Medien
    Digitale Medien
    Malignant nerve sheath tumour with epithelial elements (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 12 (1988), S. 0 
    Details
    ISSN: 1365-2559
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2559.1988.tb01975.x
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  • 6
    Digitale Medien
    Digitale Medien
    Evidence for direct learning curve for technique on change of cervical sampling device (2002)
    Oxford UK : Blackwell Science Ltd.
    Cytopathology 13 (2002), S. 0 
    Details
    ISSN: 1365-2303
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Evidence for direct learning curve for technique on change of cervical sampling device The recommended sampling device within the NHS Cervical Screening Programme is the Aylesbury spatula. A local decision was taken to decrease brush usage (either alone or in combination) by 50% from an initial level of 41.8%, with an initial inadequate smear rate of 9.93%. This was managed by controlling smear taking equipment through provision of smear taking kits. The monthly inadequate rate unexpectedly rose to 17.8% before dropping back to previous levels. Brush usage overall fell to 35.2%, with a corresponding increase in spatula use. The possible reasons for this are discussed. The facts suggest that these changes were directly linked, and that there is a learning curve with change of sampling device and that a rise in the inadequate rate should be expected under these circumstances.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2303.2002.00379.x
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  • 7
    Digitale Medien
    Digitale Medien
    Carcinosarcoma of the urinary bladder (1989)
    Springer
    Virchows Archiv 415 (1989), S. 91-95 
    Details
    ISSN: 1432-2307
    Schlagwort(e): Carcinosarcoma ; Urinary bladder ; Immunohistochemistry ; Electron microscopy ; Rhabdomyoblast
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A case of urinary bladder carcinosarcoma (UBCS) is reported with light, immunohistochemical and electron microscopical findings. The tumour consisted of a squamous cell carcinoma, variable spindle cell stromal elements compatible with fibrosarcoma, and rhabdomyoblasts. Intermediate filament co-expression of cytokeratin and vimentin was shown by immunohistochemistry. Electron microscopy (EM) confirmed the nature of the three components, and indicated some similarities between the three cell-types present. Comparisons with the previous UBCS in the literature are made.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00718608
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