Essays about: "tracer"

Showing result 11 - 15 of 90 essays containing the word tracer.

  1. 11. An Overview of State-of-the-art Hydraulic Conductivity Measurements in Coarse Grained Materials

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Jakob Andrén; [2021]
    Keywords : hydraulic conductivity; permeability; embankment dam; coarse grained; flow regime; hydraulisk konduktivitetsmätning; permeabilitet; fyllnadsdamm; grovkorniga material; flödesregim;

    Abstract : Embankment dams are made from soil materials of varying sizes and widely used all over the world.When constructing these, knowing the hydraulic conductivity (K) of the soil materials is a keyparameter in order to construct safe embankment dams. A knowledge gap regarding K measurementsin coarse grained soils has been identified. READ MORE

  3. 12. Quantification of cerebral blood flow with 15O-water PET : A comparison study between PET/CT and PET/MR and two different blood sampling instruments

    University essay from Umeå universitet/Institutionen för fysik; Umeå universitet/Diagnostisk radiologi

    Author : Amanda Eriksson; [2021]
    Keywords : Cerebral Blood Flow; CBF; oxygen-15-labelled water; PET CT; PET MR; Quantification of CBF; Image Derived Input Function; IDIF; Blood Sampled Input Function; BSIF; Arterial Input Function; AIF; Tracer Kinetic Modelling; Single Tissue Compartmental Model; 1TCM;

    Abstract : Cerebral blood flow quantification is a vital diagnostic tool for disease monitoring and used for diagnosing a variation of pathological conditions. The human brain requires roughly about 20 % of the total cardiac output to sustain normal functioning, hence the perfusion of blood is an important factor to deliver oxygenated blood. READ MORE

  4. 13. Simulation of birefringence effects for high-energy neutrino detectors

    University essay from Uppsala universitet/Högenergifysik

    Author : Nils Heyer; [2021]
    Keywords : astroparticle physics; radio detection; high-energy neutrinos; birefringence;

    Abstract : The detection of high-energy neutrinos in the E > O(PeV) range requires newdetection techniques in order to cope with the decreasing flux. The radio detectionmethod uses Askaryan emission to detect these neutrinos. READ MORE

  5. 14. Modeling wind-induced currents in lake Bolmen, Sweden, using TELEMAC 2D

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Prasanjaya Bandara Ekanayake; [2021]
    Keywords : Bolmen Lake; TELEMAC 2D; Wind induced currents; QGIS; Blue Kenue; Technology and Engineering;

    Abstract : Transport and material intermixing within lake systems have a significant impact on lake water quality. However, since researchers are primarily concerned with biological, environmental, and ecological aspects, physics and hydrodynamic behavior in lake water currents frequently receive less attention. READ MORE

  6. 15. Study of the Dilution of a chemical spill through tracer experiments in The Käppala Association's Sewerage Network, Stockholm

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Jerome Scullin; [2021]
    Keywords : Sewerage network; Tracer tests; Solute transport; ADE; Breakthrough curve; Uranine;

    Abstract : Wastewater treatment plants (WWTPs) play a vital role in protecting the environment from much of the waste produced by humans. This includes not only human waste, but everything that makes its way into a sewerage system including greywater, stormwater, and potentially hazardous chemicals from, inter alia, chemical spills. READ MORE