Sökning: "passive sampling"

Visar resultat 1 - 5 av 38 uppsatser innehållade orden passive sampling.

  1. 1. Air quality around preschools in Gothenburg: an evaluation of measurement methods

    Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Emma Forsmalm; [2023-06-21]
    Nyckelord :low-cost sensors; passive diffusion samplers; pick-ups and drop-offs; regulatory measurements;

    Sammanfattning : In this study the air quality around four different preschools, chosen to represent different local traffic environments, was measured and the measurement methods used were evaluated. The aim was to compare the information retrieved using different methods, discuss the possible applications of them and finally see if more specific activities, in this case pick-ups and drop-offs, could be seen in the data retrieved. LÄS MER

  3. 2. Detectability of insects in Malaise traps : assessing insect detectability in Malaise traps through High-Resolution Sampling, and development of a novel marking technique

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Viktor Gårdman; [2023]
    Nyckelord :Malaise trap; activity; movement; weather; mark-recapture; detectability; insects;

    Sammanfattning : Malaise traps are extensively used in insect surveys and studies, yet the detectability of insects in relation to the traps remain unknown. Detectability is the odds that a taxon ends up in a trap, given that the taxon is present in the area around the trap. LÄS MER

  4. 3. Application of Discrete Time High Order Control Barrier Functions for a prototype multi-spacecraft inspection of the ISS

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Gregorio Marchesini; [2023]
    Nyckelord :Space Robotics; Control Barrier Functions; Autonomous systems; Multi-agent systems;

    Sammanfattning : In the past few years, the application of Control Barrier Functions (CBF) and High Order Control Barrier Functions (HOCBF) as a suitable framework to ensure safety for autonomous systems has attracted increasing interest. In particular, autonomous space systems are frequently subject to safety-critical constraints due to the high costs involved in manufacturing and launching. LÄS MER

  5. 4. Serology as a diagnostic tool for Parascaris spp. in foals – A pilot study

    Master-uppsats, SLU/Dept. of Clinical Sciences

    Författare :Agnes Lind af Hageby; [2023]
    Nyckelord :roundworm; Ascariasis; equine; serodiagnostics; indirect ELISA; AsHb; L3-Lung; Ascaris suum; Anthelmintic resistance;

    Sammanfattning : Parascaris spp. are prevalent equine gastrointestinal nematodes that predominantly infect foals. The infection causes impaired welfare and can have a lethal outcome due to complications such as intestinal obstruction. LÄS MER

  7. 5. Hydrodynamic Modelling of Spread of Perfluoroalkyl Octanoic Sulphonate and Perfluoroalkyl Hexanoic Sulphonate in Lake Ekoln

    Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

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

    Sammanfattning : 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. LÄS MER