Essays about: "Attenuation coefficient"

Showing result 16 - 20 of 21 essays containing the words Attenuation coefficient.

  1. 16. Accuracy of inverse treatment planning on computed tomography like images derived from magnetic resonance data

    University essay from Institutionen för fysik

    Author : Mohammad Mehdi Akhtari; [2013]
    Keywords : ;

    Abstract : Treatment planning for radiotherapy involves different types of imaging to delineate target volume precisely. The most suitable sources to get 3D information of the patient are the computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET)/CT modalities. READ MORE

  3. 17. Fishing from space : mackerel fishing in Icelandic waters and correlation with satellite variables

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Kristin Agustsdottir; [2013]
    Keywords : chlorophyll; downwelling diffuse attenuation coefficient; photosynthetically available radiation; water leaving radiance; physical geography and ecosystem analysis; sea surface temperature; Atlantic Mackerel; Scomber scombrus; Icelandic waters; satellite variables; remote sensing; Earth and Environmental Sciences;

    Abstract : As concentrations of measured CO2 in the atmosphere reach a record high it is important to attempt all possible efforts to reduce the emissions of greenhouse gases (GHG) in all aspects of industry. The fishing sector contributes 15% of total GHG emission in Iceland, with the majority originating from fishing vessels using fossil fuel. READ MORE

  4. 18. Integrated Optics Set-up for Photodynamic Therapy

    University essay from Lunds universitet/Atomfysik

    Author : Cristina Pantaleone; [2012]
    Keywords : Photodynamic therapy; IPDT; light-matter interaction; optical circuit; prostate cancer; modulation frequency encoding; Technology and Engineering;

    Abstract : Interstitial photodynamic therapy is a local solid cancer treatment technique that relies on the simultaneous presence of light, photosensitizer and oxygen. SpectraCure AB has been developing a light delivery system for prostate cancer therapy. READ MORE

  5. 19. Studies on Circulator-Tree Wave Digital Filters

    University essay from Institutionen för systemteknik

    Author : Bhunesh Kumar; Naeem Ahmad; [2009]
    Keywords : Filter; Impulse response; attenuation; series adaptor; parallel adaptor; adaptor coefficient; circulator-tree structure; wavedigital filter;

    Abstract : A wave digital filter is derived from an analog filter, which is realized as classical doubly resistively terminated reactancefilters. Perfectly designed wave digital filters express good dynamic signal range, low roundoff noise and excellent stabilitycharacteristics with respect to nonlinearity which are produced due to finite wordlength effects. READ MORE

  6. 20. Wave attenuation in stands of common reed(Phragmites australis) and its consequences on sediment resuspension

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Per Falås; [2007]
    Keywords : Phragmites australis; Sediment resuspension; Shallow lakes; Alternative stable states; Civil engineering; Stands of common reed; offshore technology; hydraulic engineering; Wave damping; soil mechanics; Väg- och vattenbyggnadsteknik; Technology and Engineering;

    Abstract : Common reed is found in near-shore areas of many European lakes, where it forms dense stands. As waves are influenced by obstacles along the wave path, water and sediment motions caused by waves are affected by these stands. READ MORE