Sökning: "nitrite reductase"

Visar resultat 11 - 14 av 14 avhandlingar innehållade orden nitrite reductase.

  1. 11. Ecology and genomics of microorganisms reducing the greenhouse gas N₂O : examples from the rhizosphere

    Författare :Daniel Graf; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Nitrous oxide (N₂O) is a potent greenhouse gas and the major ozone depleting substance in the stratosphere. One major source of N₂O is incomplete denitrification, whereas the only known tropospheric sink of N₂O is the microbial enzyme nitrous oxide reductase. LÄS MER

  3. 12. Tuberculosis : diagnosis and drug susceptibility testing where resources are scarce

    Författare :Kristian Ängeby; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Tuberculosis; diagnosis; microscopy; drug susceptibility testing; low-income countries;

    Sammanfattning : Background: Tuberculosis remains a major global public health problem. Not surprisingly, most cases of this disease occur in poor countries and an increasing number of patients harbor drug - resistant bacteria. The cornerstone of bacteriological diagnosis of tuberculosis is direct sputum smear microscopy. LÄS MER

  4. 13. Genetics of Tetrapyrrole Synthesis in Gram-Positive Bacteria

    Författare :Per Johansson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microbiology; siroheme; tetrapyrrole synthesis; Bacillus subtilis; Bacillaceae; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Sammanfattning : The organization and regulation of genes for tetrapyrrole synthesis were studied in low G+C Gram-positive bacteria. Clusters of genes encoding enzymes for tetrapyrrole biosynthesis were cloned from Bacillus sphaericus, Bacillus stearothermophilus, Brevibacillus brevis and Paenibacillus macerans. LÄS MER

  5. 14. Developing and optimizing processes for biological nitrogen removal from tannery wastewaters in Ethiopia

    Författare :Seyoum Leta; Gunnel Dalhammar; Jes Ia Cour Jenson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; biological nitrogen and supphide removal; dntififying bacteria; nitrade-reducing; sulphuroxidizing bacteria; nitrate uptake rate; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Sammanfattning : In Ethiopia industrial effluents containing high contents of organic matter, nitrogen and heavy metals are discharged into inland surface waters with little or no pre-treatment. Significant pollution concerns related to these effluents include dissolved oxygen depletion, toxicity and eutrophication of the receiving waters. LÄS MER