Sökning: "carbon metabolism"

Visar resultat 6 - 10 av 185 avhandlingar innehållade orden carbon metabolism.

  1. 6. Biophysical controls on CO2 evasion from Arctic inland waters

    Författare :Gerard Rocher-Ros; Reiner Giesler; Ryan A. Sponseller; Ann-Kristin Bergström; Paul del Giorgio; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Inland waters; carbon dioxide; organic carbon; inorganic carbon; arctic; CO2 evasion; DOC; DIC; streams; metabolism; oxygen; Limnology; limnologi;

    Sammanfattning : CO2 evasion to the atmosphere from inland waters is a major component of the global carbon (C) cycle. Yet spatial patterns of CO2 evasion and the sources of C that fuel evasion remain poorly understood. LÄS MER

  3. 7. Beyond carbon-limitation : A re-evaluation of the ecological role of photorespiration and direct oxygen photoreduction in seagrasses

    Författare :Pimchanok Buapet; Mats Björk; Ilana Berman-Frank; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbon limitation; Chlorophyll fluorescence; Electron transport rate; Irradiance; Mehler reaction; Non-photochemical quenching; Photorespiration; Photosynthetic activity; Plant Physiology; växtfysiologi;

    Sammanfattning : Seagrasses living in shallow coastal waters are regularly subjected to changes in environmental conditions including the two essential factors for photosynthesis: dissolved inorganic carbon (DIC) and irradiance. This thesis focuses on the photosynthetic responses of seagrasses to carbon limitation induced by community metabolism and/or high light intensities. LÄS MER

  4. 8. Adaptations and constraints associated with autotrophy in microbial metabolism

    Författare :Johannes Asplund Samuelsson; Elton P. Hudson; Adil Mardinoglu; Costas D. Maranas; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Autotrophy; Carbon fixation; CO2 fixation; Calvin cycle; CBB cycle; Bacteria; Archaea; Prokaryotes; Cyanobacteria; Synechocystis; E. coli; Comparative genomics; Metabolic engineering; Microbial metabolism; Machine learning; Systems biology; Ribosome profiling; Kinetic modeling; Enzyme kinetics; Metabolic models; Pathway enumeration; Biosynthesis pathways; Metabolomics; Metabolite concentrations; Thermodynamics; Autotrofi; Kolfixering; CO2-fixering; Calvincykeln; CBB-cykeln; Bakterier; Arkéer; Prokaryoter; Cyanobakterier; Synechocystis; E. coli; Jämförande genomik; Metabolisk ingenjörskonst; Mikrobiell metabolism; Maskininlärning; Systembiologi; Ribosomprofilering; Kinetisk modellering; Enzymkinetik; Metaboliska modeller; Syntesvägsuppräkning; Biosyntesvägar; Metabolomik; Metabolitkoncentrationer; Termodynamik; Bioteknologi; Biotechnology;

    Sammanfattning : Carbon dioxide (CO2) emissions from human activities are driving climate change, but the pending crisis could be mitigated by a circular carbon economy where released CO2 is recycled into commodity chemicals. Autotrophic microbes can make a contribution by producing chemicals, such as biofuels, from CO2 and renewable energy. LÄS MER

  5. 9. Process Development of Bioethanol Production from Wheat and Barley Residues Steam Pretreatment and SSF

    Författare :Marie Linde; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbochemistry; Kemiteknik och kemisk teknologi; Chemical technology and engineering; metabolism; Biokemi; Metabolism; Biochemistry; Barley straw; Wheat straw; DDGS; Fermentation; SSF; Enzymatic hydrolysis; H2SO4; Ethanol production; Steam pretreatment; petrochemistry; fuels and explosives technology; Petrokemi; bränslen; sprängämnen; Wood; pulp and paper technology; Pappers- och massateknik; Biotechnology; Bioteknik;

    Sammanfattning : Bioethanol has received increasing attention as an alternative to petrol due to the current dependency on supplies from other countries and due to the increased concentration of the greenhouse gas carbon dioxide in the atmosphere. In this thesis, the development of 2nd generation production processes for bioethanol production from the lignocellulosic part of biomass is discussed. LÄS MER

  7. 10. Effects of nitrogen deposition on the growth, metabolism and activity of ectomycorrhizal fungi

    Författare :Magnus Ellström; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nitrogen deposition; Ectomycorrhizal fungi; Symbiosis; SOM modification; Carbon starvation; Metabolism; Nitrogen leakage; IR-spectroscopy; Mesh bags; Microarray; Axenic growth; Transcriptomics.;

    Sammanfattning : Elevated nitrogen (N) deposition is an environmental problem that can affect plants and microorganisms, which are vital for the terrestrial N and carbon (C) cycles. This thesis has investigated the response of ectomycorrhizal fungi (EMF) to increased N deposition. LÄS MER