Essays about: "tracer"

Showing result 1 - 5 of 85 essays containing the word tracer.

  1. 1. Evaluation of whole-body bone scans performed using a gamma camera with Cadmium Zinc Telluride detector

    University essay from

    Author : Victor Asp; [2022-01-13]
    Keywords : Medical physics; whole-body bone scans; gamma camera; Cadmium Zinc Telluride detector;

    Abstract : The bone scan is a common nuclear medicine imaging procedure that is mainly used for evaluating several oncological patient groups. A radioactive tracer, 99mTc -labelled diphosphonate, is injected intravenously and accumulates in the skeleton. The distribution of the tracer in the body is measured with a gamma camera 3 hours post-injection. READ MORE

  3. 2. Hydrodynamic Modelling of Spread of Perfluoroalkyl Octanoic Sulphonate and Perfluoroalkyl Hexanoic Sulphonate in Lake Ekoln

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Prajwol Prajapati; [2022]
    Keywords : Hydrodynamic modelling; water quality; PFAS; PFOS; PFHxS; MIKE 3 FM; Ekoln; Fyrisån;

    Abstract : Per and polyfluoroalkyl substances (PFAS) are found ubiquitously in the environment across the globe.These substances have high persistence due to the strong carbon and fluorine bond. In the aquaticenvironment, due to high persistence, these substances don’t decay easily and are detected on the surfaceas well as in groundwater sources. READ MORE

  4. 3. Hybrid Rendering in 3D Map-Based Grand Strategy Games

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

    Author : Kajsa Buckard; [2022]
    Keywords : Computer graphis; ray tracing; rasterization; strategy games; Datorgrafik; strålspårning; rastrering; strategispel;

    Abstract : Ray tracing comes together with a tremendous computational cost [1]. Therefore, Keller et al., expressed that possible cost reduction appears when a hybrid rendering pipeline is implemented by combining rasterization and ray tracing, which have already been introduced to the film and game industries. READ MORE

  5. 4. GIS, tracer test and water balance based hydrological analysis in Tarfala, Northern Sweden

    University essay from Stockholms universitet/Institutionen för naturgeografi

    Author : Elias Koivisto; [2022]
    Keywords : Tarfala; DEM; Tracer test; Water balance; the Arctic; Climate change; Permafrost; Glacier;

    Abstract : Current climate change poses a threat to the Arctic due to increasing temperatures, which cause the permafrost and glaciers to melt and thaw. This thesis focused on analyzing water balances in Tarfala catchment between 2000 and 2020 and using GIS as a support for tracer test results measured in Tarfala in 2021. READ MORE

  6. 5. Measuring the [C II]-to-H I connection in high-redshift absorption-selected galaxies

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Gaurav Senthil Kumar; [2022]
    Keywords : QSO; Quasar; Black Hole; AGN; Active Galactic Nuclei; DLA; Damped Lyman Alpha; C II; [C II]; H I; Sightline; HST; X-shooter; Spectroscopy; Echelle Spectroscope; Hyperfine transition; Hyperfine; Physics and Astronomy;

    Abstract : HI neutral gas is the basic building block of galaxies. It dictates the star formation rate and hence the metal enrichment rates within high redshift galaxies. HI neutral gas cannot be directly observed beyond z ≈ 0. READ MORE