Monitoring sediment transfer processes on the desert margin

LANDSAT Thematic Mapper and Multispectral Scanner data have been used to construct change detection images for three playas in south-central Tunisia. Change detection images have been used to analyze changes in surface reflectance and absorption between wet and dry season (intra-annual change) and between different years (inter-annual change). Change detection imagery has been used to examine geomorphological changes on the playas. Changes in geomorphological phenomena are interpreted from changes in soil and foliar moisture levels, differences in reflectances between different salt and sediments and the spatial expression of geomorphological features. Intra-annual change phenomena that can be detected from multidate imagery are changes in surface moisture, texture and chemical composition, vegetation cover and the extent of aeolian activity. Inter-annual change phenomena are divisible into those restricted to marginal playa facies (sedimentation from sheetwash and alluvial fans, erosion from surface runoff and cliff retreat) and these are found in central playa facies which are related to the internal redistribution of water, salt and sediment

The LANDMAP project for the automated creation and validation of multiresolution orthorectified satellite image products and a 1"�� DEM of the British Isles from ERS tandem SAR interferometry.

A Digital Elevation Model (DEM) of the British Isles at 1” (~30m) and a set of orthorectified satellite image data products (from 0.3” to 1”) is being created by the LANDMAP project using a multi-processor Solaris machine, with some 0.65TB of on-line disk-space. This unique DEM is being created from multiple passes of ascending and descending tandem ERS Synthetic Aperture Radar data using commercially available software from Phoenix Systems Ltd. and GIS software developed to maximise ERS-tandem strip coverage. This paper discusses this data, the processing associated with it and its quality assessment

Normal tissue reactions to radiotherapy: Towards tailoring treatment dose by genotype

A key challenge in radiotherapy is to maximize radiation doses to cancer cells while minimizing damage to surrounding healthy tissue. As severe toxicity in a minority of patients limits the doses that can be safely given to the majority, there is interest in developing a test to measure an individual’s radiosensitivity before treatment. Variation in sensitivity to radiation is an inherited genetic trait and recent progress in genotyping raises the possibility of genome-wide studies to characterize genetic profiles that predict patient response to radiotherapy

Proceedings Of The 23Rd Paediatric Rheumatology European Society Congress: Part Two

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