Sökning: "NATURVETENSKAP Biologi"

Visar resultat 1 - 5 av 1436 avhandlingar innehållade orden NATURVETENSKAP Biologi.

  1. 1. Optimal strategies and information in foraging theory

    Detta är en avhandling från Lunds Universitet

    Författare :Emma Sernland; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bayesian foraging; information use; public information; prior information; negative binomial distribution; group foraging; decision-making; information updating; leaving strategy; Ecology; Ekologi; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES Biology Other biology; NATURVETENSKAP Biologi Övrig biologi; Naturvetenskap; Natural sciences;

    Sammanfattning : In this thesis, I present both theoretical and empirical work where we have studied how humans and animals use information in situations where they need to continually update their information on the density of a resource. We have found that the amount of information, and the way the information is presented, are important factors for how well decisions are adapted to current circumstances. LÄS MER

  3. 2. On Transcriptome Sequencing

    Detta är en avhandling från Stockholm : KTH

    Författare :Daniel Klevebring; Joakim Lundeberg; Ulf Gyllensten; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Transcriptome; RNA-seq; DNA sequencing; gene expression profiling; non-coding RNA; small RNA; NATURAL SCIENCES Biology Other biology Functional genomics; NATURVETENSKAP Biologi Övrig biologi Funktionsgenomik; NATURAL SCIENCES Biology Other biology Bioinformatics; NATURVETENSKAP Biologi Övrig biologi Bioinformatik; NATURAL SCIENCES Biology Cell and molecular biology Genetics; NATURVETENSKAP Biologi Cell- och molekylärbiologi Genetik; NATURAL SCIENCES Biology Cell and molecular biology Molecular biology; NATURVETENSKAP Biologi Cell- och molekylärbiologi Molekylärbiologi; MEDICINE Morphology; cell biology; pathology Cell biology; MEDICIN Morfologi; cellbiologi; patologi Cellbiologi;

    Sammanfattning : This thesis is about the use of massive DNA sequencing to investigate the transcriptome. During recent decades, several studies have made it clear that the transcriptome comprises a more complex set of biochemical machinery than was previously believed. LÄS MER

  4. 3. Population Differentiation in Solidago virgaurea along Altitudinal Gradients

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Anna Bergsten; Jon Ågren; Staffan Karlsson; Kari Lehtilä; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; population differentiation; altitudinal gradient; plant nutrient status; resorption efficiency; resorption proficiency; flowering phenology; countergradient variation; reproductive effort; flower production; cost of reproduction; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; NATURAL SCIENCES Biology Other biology; NATURVETENSKAP Biologi Övrig biologi; Ecological Botany; Ekologisk botanik;

    Sammanfattning : Altitudinal gradients offer attractive opportunities for studies of population differentiation in response to environmental heterogeneity. In this thesis, I examined population differentiation along altitudinal gradients by combining common-garden experiments with field studies and experiments in alpine, subalpine and boreal populations of the perennial herb Solidago virgaurea. LÄS MER

  5. 4. Hitting the mark studies of alterations in behaviour and fertility in ethinyl estradiol-exposed zebrafish and search related biomarkers

    Detta är en avhandling från Örebro : Örebro university

    Författare :Nasim Reyhanian Caspillo; Örebro universitet.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Endocrine disrupting compounds; 17α-ethinylestradiol; fertility; anxiety; behaviour; zebrafish; biomarkers; stress; Biology; Biologi;

    Sammanfattning : In this thesis, we have analysed the effects of EE2 on non-reproductive behaviours and fertility. We have showed that two doses of EE2 in male adult short-term exposures evokes opposite behaviours in the novel tank test. LÄS MER

  7. 5. Characterization and environmental influences on inflammatory and physiological responses

    Detta är en avhandling från Örebro : Örebro universitet

    Författare :Hazem Khalaf; Per-Erik Olsson; Joe de Pierre; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Inflammation; NF-κB; cytokines; pharmaceuticals; zebrafish; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; NATURAL SCIENCES; NATURVETENSKAP; Biology; Biologi;

    Sammanfattning : Pharmaceuticals are regularly released into the environment, in particular nonsteroidalanti-inflammatory drugs (NSAIDs) and antibiotics. The measuredconcentrations are relatively low and have therefore been considered to be harmless. LÄS MER