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Showing result 1 - 5 of 37 essays matching the above criteria.

1. 1. Development of Advanced X-ray Micro-Tomography Helical Scan andTomographic Data Processing

   University essay from Högskolan i Gävle/Avdelningen för elektroteknik, matematik och naturvetenskap

   Author : Yoseph Abraham; [2023]
   Keywords : ;

   Abstract : Micro-computed tomography (Micro-CT) is an imaging technique that allows for high-resolution,three-dimensional (3D) internal visualization of small objects in a non-destructive manner. However,a significant limitation arises when attempting to image elongated samples at higher resolutions andmagnifications due to the inherently small field of view (FOV). READ MORE

3. 2. Towards Sustainable Coffee Packaging: A Comparative Study of Current and Future Materials for Zoégas Coffee

   University essay from Lunds universitet/Förpackningslogistik

   Author : Alexandra Karlsson; [2023]
   Keywords : Food packaging; coffee; permeability; recyclability; shelf life.; Technology and Engineering;

   Abstract : An important factor in preventing food waste is the ability to provide a product with a package according to its needs. The packaging material, in turn, needs to be recyclable in order to contribute to a circular use of materials rather than becoming waste. READ MORE

4. 3. Scenario Dose Calculation for Robust Optimization in Proton Therapy Treatment Planning

   University essay from Lunds universitet/Matematik LTH

   Author : Johan Sundström; [2021]
   Keywords : cancer; radiation therapy; proton therapy; treatment planning; robust optimization; dose calculation algorithms; scenarios; patient setup; range error; organ motion; pencil beam scanning; computational efficiency; range-corrected dose-mapping; Mathematics and Statistics;

   Abstract : Robust optimization plays a vital role in proton therapy treatment planning. A monoenergetic beam of protons has a finite range and delivers most of its dose at some specific depth in the patient. This allows the design of treatments that mainly damage the tumor and not any surrounding tissue. READ MORE

5. 4. Monte Carlo simulations of Linear Energy Transfer distributions in radiation therapy

   University essay from Uppsala universitet/Högenergifysik

   Author : David Dahlgren; [2021]
   Keywords : Radiotherapy; Particle Physics; Linear Energy Transfer; proton therapy; carbon ion therapy;

   Abstract : In radiotherapy, a quantity asked for by clinics when calculating a treatment plan, along withdose, is linear energy transfer. Linear energy transfer is defined as the absorbed energy intissue per particle track length and has been shown to increase with relative biologicaleffectiveness untill the overkilling effect. READ MORE

6. 5. Millimeter-Wave Pencil Beam Leaky-Wave Antenna

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Tom Eriksson; Erik Westberg; [2021]
   Keywords : Leaky-wave antenna LWA ; Continuous transverse stubs CTS ; Parallel plate waveguide PPW ; Dispersion;

   Abstract : Moving into higher frequencies, in occurrence withmodern applications, poses the issue of higher attenuation ofelectromagnetic waves, which in turn demand more directiveantennas. This paper proposes a directive antenna designoperating at 30GHz based on leaky-wave technology. Themodel consists of two main components. READ MORE