Sökning: "Thérèse Eng"

Visar resultat 16 - 20 av 188 avhandlingar innehållade orden Thérèse Eng.

  1. 16. Hidden patterns that matter : statistical methods for analysis of DNA and RNA data

    Författare :Therese Kellgren; Patrik Rydén; Sara Sjöstedt de Luna; Rebecka Jörnsten; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Genome; Next-generation sequence; statistics; microarrays; bacteria; antibiotic resistance; inherited diseases; Co-expression networks; centralization within subgroups;

    Sammanfattning : Understanding how the genetic variations can affect characteristics and function of organisms can help researchers and medical doctors to detect genetic alterations that cause disease and reveal genes that causes antibiotic resistance. The opportunities and progress associated with such data come however with challenges related to statistical analysis. LÄS MER

  3. 17. Measured and modelled long-term effects of whole-tree harvest : impact on soil and surface water acid-base status in boreal forests

    Författare :Therese Zetterberg; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis examines the impact of whole-tree harvest (WTH) on soils and surface waters acid-base status in coniferous forests compared with conventional harvesting (CH). A combination of field observations (up to four decades) and dynamic modelling was used to describe the impact on soil calcium (Ca²⁺) pools and surface water acid neutralizing capacity (ANC). LÄS MER

  4. 18. Cellular Responses to Arsenite and Cadmium - Mechanisms of Toxicity and Defense in Saccharomyces cerevisiae

    Författare :Therese Jacobson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; arsenic; arsenite; cadmium; glutathione; extracellular defense; protein aggregation; chaperones; proteasome; Saccharomyces cerevisiae;

    Sammanfattning : All biological systems have to cope with a wide range of metals that are present in the environment. Metals can be essential or beneficial for life, inert or non-essential and toxic, often depending on their chemical form and concentration. Most organisms have evolved defense mechanisms in order to deal with toxic metals. LÄS MER

  5. 19. On the developmental significance of female pubertal timing

    Författare :Therése Skoog; Håkan Stattin; Margaret Kerr; Judith Dubas; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; female; puberty; pubertal timing; development; adjustment; longitudinal; sexuality; peer relations; weight status; mechanisms; conditions; Psychology; Psykologi; Psykologi; Psychology;

    Sammanfattning : Puberty is the process of becoming sexually mature and it has fundamental somatic and psychosocial implications. The focus of this dissertation was the short and long term developmental significance, concerning both soma et psyche, of female pubertal timing. Four studies were designed to accomplish these aims. LÄS MER

  7. 20. Movements in the dark : flying, landing and walking in insects

    Författare :THERESE REBER; Funktionell zoologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; insect; vision; light intensity; bumblebee; retina; behavioural adaptation; flight; landing; dung beetle; nocturnal adaptation; sky compass; straight-line orientation;

    Sammanfattning : Flying, as well as walking insects rely on vision to regulate locomotion, even in the dark when the visual system is much less reliable. To manage visual control of these behaviours at low light intensities, many insects have evolved optical adaptations, such as larger facet lenses and wider rhabdoms, and neural adaptations, such as spatial and temporal summation, to increase their visual sensitivity. LÄS MER