Essays about: "POPs"

Showing result 11 - 15 of 23 essays containing the word POPs.

  1. 11. Effects of Persistent Organic Pollutants and Their Mixtures on Biotransformation and Oxidative Stress in Zebrafish Embryo

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Hyon Sun Jeong; [2016]
    Keywords : Zebrafish; Developmental toxicity; Mixture toxicity; Oxidative stress;

    Abstract : Persistent organic pollutants (POPs) cause significant effects on organisms due to their resistance to environmental degradation and specific toxic responses. Although POPs toxicities were linked to oxidative stress in the previous studies, there are few POPs studies that link them with oxidative stress in zebrafish during development. READ MORE

  3. 12. Concealing rendering simplifications using gazecontingent depth of field

    University essay from KTH/Skolan för datavetenskap och kommunikation (CSC)

    Author : Tim Lindeberg; [2016]
    Keywords : eye tracking; eyetracking; gaze contingent; depth of field; level of detail; tessellation; 3D grahpics; computer graphics; foveated rendering;

    Abstract : One way of increasing 3D rendering performance is the use of foveated rendering. In this thesis a novel foveated rendering technique called gaze contingent depth of field tessellation (GC DOF tessellation) is proposed. Tessellation is the process of subdividing geometry to increase detail. READ MORE

  4. 13. Method Development for Quantification of Different Persistent Organic Pollutants in Ringed Seal (Phoca hispida) from the Baltic Sea

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Amelie Nordström; [2016]
    Keywords : Ringed seal; Baltic Sea; Persistent Organic Pollutants; Sample pre-treatment;

    Abstract : Persistent organic pollutants such as polychlorinated biphenyls (PCBs), DDT and polybrominated diphenyl ethers (PBDEs) tend to accumulate in biota and are transferred through the aquatic food web, which result in a high accumulation in marine mammals. In recent years various novel flame retardants (nBFRs), which have replaced the banned PBDEs, have also started to occur in the environment. READ MORE

  5. 14. Spreading of persistent organic pollutants from fiber bank sediments

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Lisa Vogel; [2015]
    Keywords : persistent organic pollutants; PCB; DDT; HCB; fiber bank; paper and pulp; POM; log Kd; bioaccumulation; pore water concentration; Marenzelleria spp.; Saduria entomon;

    Abstract : Discharge of untreated wastewater from paper and pulp industries have led to large environmental impacts on the coastal sediments in Västernorrland, Sweden. Dissolved fibers caused the formation of large fiber banks and fiber influenced sediment areas, which proved to be highly affected by contamination with persistent organic pollutants (POPs). READ MORE

  6. 15. The bioavailability of perfluoroalkyl substances (PFASs) and polycyclic aromatic hydrocarbons (PAHs) in soil to Eisenia fetida and Cucurbita pepo

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Masoumeh Moshfeghi Mohammadi; [2015]
    Keywords : PFASs; PAHs; bioavailability; BAF; BSAF; BCF; earthworm; zucchini;

    Abstract : Persistent organic pollutants (POPs) are organic chemicals of great concern because of their persistency, bioaccumulation and toxic effects both in the environment and to humans. Two groups of organic chemicals that are partly listed as POPs are perfluoroalkyl substances (PFASs) and polycyclic aromatic hydrocarbons (PAHs). READ MORE