Search for dissertations about: "genus structure"

Showing result 11 - 15 of 76 swedish dissertations containing the words genus structure.

  2. 11. Bioactive Compounds in the Chemical Defence of Marine Sponges : Structure-Activity Relationships and Pharmacological Targets

    Author : Erik Hedner; Lars Bohlin; Per R Jonsson; Raffaele Riccio; Uppsala universitet; []
    Keywords : Pharmacognosy; 5-hydroxytryptamine; agelasine; agelasimine; antibacterial; antifouling; barettin; bromobenzisoxazolone barettin; cytotoxic; marine; secondary metabolite; sponge; Farmakognosi; Agelas; Geodia barretti;

    Abstract : Marine invertebrates, in particular sponges, represent a source of a wide range of secondary metabolites, many of which have been attributed various defensive capabilities against environmental stress factors. In this thesis sponge-derived low-molecular peptide-like compounds and associated analogs are investigated for bioactivity and pharmacological targets. READ MORE

  4. 12. Population structure and antibiotic resistance of the genus enterococcus in humans, animals and the environment

    Author : Aina Iversen; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Enterococci; epidemiology; ecology; food animals; humans; environment; vancomycin resistance; sewage; transmission; diversity; antibiotic resistance; surveillance;

    Abstract : Enterococci belong to the normal intestinal flora of humans and animals. An increased prevalence of antibiotic resistant enterococci causing nosocomial infections has drawn attention to the epidemiology and emergence of antibiotic resistance in this genus. READ MORE

  5. 13. Microbially induced concrete degradation in subsea tunnels - Community structure of biofilms from sprayed reinforced concrete in the Oslofjord tunnel

    Author : Sabina Karacic; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; microbial community structure; concrete deterioration; biocorrosion; 16S rRNA gene sequences; biofilm; subsea tunnel;

    Abstract : Microbially induced concrete deterioration has been discovered in several Norwegian subsea tunnels with significant disintegration of the calcium silicate hydrate (C-S-H) and steel fibre corrosion in areas with leakages of saline groundwater. Complex microbial biofilm activity together with abiotic attack from saline ground water, with high concentrations of Cl−, SO42−, Mg2+ and HCO3−, are responsible for the degradation in the specific subsea tunnel environment. READ MORE

  6. 14. In Murky waters : Swedish demosponges and their genealogies

    Author : Raquel Pereira; Mikael Thollesson; Hanna Johannesson; Dirk Erpenbeck; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Porifera; Swedish sponge fauna; Spongilla lacutsris; population structure; Suberites; Suberitida; Syringella; Systematics; Biology with specialization in Systematics; Biologi med inriktning mot systematik;

    Abstract : Swedish Sponge fauna last updated happened over 80’s years ago. This fact explains, partially, the country’s low sponge. READ MORE

  7. 15. Sphagnum limits : Physiology, morphology and climate

    Author : Charles Campbell; Håkan Rydin; Gustaf Granath; Sebastian Sundberg; Bengt-Gunnar Jonsson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Sphagnum; ecology; bryophyte; winter; species distribution models; low temperature; plant structure; water economy; Biology with specialization in Ecological Botany; Biologi med inriktning mot ekologisk botanik;

    Abstract : Sphagnum is the most important plant genus in terms of terrestrial carbon cycling. It and the habitats it creates store an equivalent of ~68% of the CO2 in the atmosphere. The genus has little dispersal limitation and the mire habitats are functionally similar at global scales. READ MORE