Sökning: "Biological material"

Visar resultat 21 - 25 av 810 avhandlingar innehållade orden Biological material.

  1. 21. Toxicometabolomics and biotransformation product screening in single zebrafish embryos

    Författare :Anton Ribbenstedt; Jonathan P. Benskin; Magnus Breitholtz; Elena Gorokhova; Emma Schymanski; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Non-target; REACH; Orbitrap; single embryo; zebrafish embryo; metabolism; high throughput; hydroxylation; glucuronidation; metabolite screening; phase I; phase II; pharmaceutical; structure elucidation; conjugation; propranolol; beta blocker; Non-targeted; toxicometabolomics; Orbitrap; single embryo; 3R; metabolomics; MoA; mode of action; zebrafish embryo; carbamazepine; biotransformation; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Over the last decade environmental agencies worldwide have escalated their work to phase out animal testing for the purposes of chemical regulation. Meanwhile the number of commercially available chemicals and the requirements for hazard assessments have both increased, creating a large need for substitution of traditional in vivo assays with in vitro tests. LÄS MER

  3. 22. Perturbance and Stimulation : using Nitrogen Addition and High-Throughput Sequencing to Study Fungal Communities in Boreal Forests

    Författare :Andreas N. Schneider; Nathaniel Street; Vaughan Hurry; Torgny Näsholm; Colin Averill; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Boreal forest; Scots pine; Norway spruce; ectomycorrhiza; saprotroph; fertilization; nitrogen; mycobiome; rhizosphere; decomposition; carbon; seedling establishment; forest management; clearcutting;

    Sammanfattning : Fungal communities are major players in globally important nutrient cycling processes, and form symbioses with most terrestrial plants. In the nitrogen (N) limited Swedish boreal forest, ectomycorrhizal (EcM) fungi colonize most roots of the economically important and stand dominating conifer species, Norway spruce (Picea abies) and Scots pine (Pinus sylvestris), with significant implications for tree nutrition and decomposition processes. LÄS MER

  4. 23. Determination of selenium in biological material

    Författare :Lena Hansson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 24. Stream monitoring using near-infrared spectroscopy of epilithic material

    Författare :Jan Persson; Ingemar Renberg; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Streams; environmental monitoring; Water Framework Directive; water quality; biological impact; epilithic material; near-infrared spectroscopy; diatoms; Earth sciences; Geovetenskap;

    Sammanfattning : The European Union Water Framework Directive (WFD), with initiatives to manage surface water resources, has increased the need for fast and inexpensive methods for monitoring conditions in streams. The objective of this thesis is to assess the potential of near-infrared spectroscopy (NIRS) of epilithic material to become such method. LÄS MER

  7. 25. Microbial biofilm communities associated with degradation of sprayed concrete in subsea tunnels

    Författare :Sabina Karacic; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; marine environment; subsea tunnels; surface structure; biofilm; steel fibers; metagenomics.; microbially induced deterioration; amplicon sequencing; concrete;

    Sammanfattning : Deterioration of concrete leads to reduced structural strength implying high societal challenge with huge economic impact. In the Oslofjord subsea tunnel, complex microbial biofilm activity together with abiotic attack from saline groundwater are responsible for concrete matrix degradation and steel fiber corrosion. LÄS MER