Search for dissertations about: "environmental filtering"

Showing result 1 - 5 of 42 swedish dissertations containing the words environmental filtering.

  2. 1. Environmental filtering of bacteria in low productivity habitats

    Author : Inga Richert; Stefan Bertilsson; Annelie Wendeberg; Lise Øvreås; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; bacteria; environmental filtering; diversity; ecosystem service; hydrocarbon utilization; Southern Ocean; sediment; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology;

    Abstract : Microbes fulfill important ecosystem functions by contributing as drivers of global nutrient cycles. Their distribution patterns are mainly controlled by environmental heterogeneities. So far, little is known about the mode of action of particular environmental drivers on the microbiota, particularly in low productivity habitats. READ MORE

  4. 2. Toxicometabolomics and biotransformation product screening in single zebrafish embryos

    Author : Anton Ribbenstedt; Jonathan P. Benskin; Magnus Breitholtz; Elena Gorokhova; Emma Schymanski; Stockholms universitet; []
    Keywords : 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;

    Abstract : 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. READ MORE

  5. 3. Sensing the environment : development of monitoring aids for persons with profound deafness or deafblindness

    Author : Parivash Ranjbar; Dag Stranneby; Erik Borg; Charlotte M. Reed; Örebro universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Auditive identification; Deaf; Deafblind; Directional perception; Environmental sound; Filtering; Frequency transposing; Hearing aid; Hearing impairment; Modulating; Monitoring; Tactile perception; Vibratory aid; Vibratory identification; Electronics; Elektronik; TECHNOLOGY; TEKNIKVETENSKAP; Elektronik; Electronics;

    Abstract : Earlier studies of persons with deafness (D) and/or deafblindness (DB) have primarily focused on the mobility and communication problems. The purpose of the present study was to develop technology for monitoring aids to improve the ability of persons with D and/or DB to detect, identify, and perceive direction of events that produce sounds in their surroundings. READ MORE

  6. 4. Plant community assembly in grazed grasslands

    Author : Bryndís Marteinsdóttir; Eriksson Ove; Cousins Sara A. O.; Johan Ehrlén; Meelis Pärtel; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Assembly rules; dispersal limitation; environmental filtering; establishment limitation; ex-arable fields; functional traits; landscape history; semi-natural grasslands; seed bank; seed augmentation; seed rain; trait based filtering; Plant Ecology; växtekologi;

    Abstract : Species assembly into local communities from the surrounding region can be caused either by species failure to reach the site (i.e. seed limitation) or to establish (i.e. READ MORE

  7. 5. New methods and applications for interferometric GNSS reflectometry

    Author : Joakim Strandberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; sea level; sea ice; GNSS; reflectometry;

    Abstract : The GNSS reflectometry technique has been proven to be usable for measuring several environmental properties, such as soil moisture, snow depth, vegetation, and sea level. As numerous GNSS installations are already installed around the world for geodetic purposes, the technique opens up a large data set for new analyses, complementing other environmental measurement campaigns. READ MORE