Search for dissertations about: "role for animals"

Showing result 21 - 25 of 501 swedish dissertations containing the words role for animals.

  2. 21. Spring Phenology of Butterflies : The role of seasonal variation in life-cycle regulation

    Author : Sandra Stålhandske; Olof Leimar; Karl Gotthard; Wolf Blanckenhorn; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Phenology; Life cycle regulation; Phenotypic plasticity; Local adaptation; Butterflies; Diapause; Pupal development; Anthocharis cardamines; Herbivore – host plant interaction; etologi; Ethology;

    Abstract : Animals and plants in temperate regions must adapt their life cycle to pronounced seasonal variation. The research effort that has gone into studying these cyclical life history events, or phenological traits, has increased greatly in recent decades. READ MORE

  4. 22. The Role of IgM and Complement in Antibody Responses

    Author : Christian Rutemark; Birgitta Heyman; Claus Nielsen; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Complement; antibody response; mutated IgM; natural IgM; complement receptors; SIGN-R1; SAP; CRP; B cells; Medical Science; Medicinsk vetenskap;

    Abstract : An intact complement system including the complement receptors 1 and 2 (CR1/2) is crucial for the generation of a normal antibody response in animals and humans. Moreover, activation of the classical pathway is thought to be important since deficiency in complement components C1q, C2, C4 or C3 lead to impaired antibody responses. READ MORE

  5. 23. Ticks - ecology, new hazards, and relevance for public health

    Author : Thérese Janzén; Monica Hammer; Patrik Dinnétz; Mona Petersson; Lars Korslund; Södertörns högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Baltic Sea region; eco-epidemiology; habitat; Ixodes persulcatus; Ixodes ricinus; landscape; risk; urbanization; Environmental Studies; Miljövetenskapliga studier; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Abstract : Ticks and tick-borne diseases are ranking second only to mosquitoes as vectors of pathogens responsible for diseases in both humans and domestic animals. In the countries around the Baltic Sea, two medically important tick species are increasing both in range and abundance, and the public health threat posed by tick-borne diseases in this area is steadily growing. READ MORE

  6. 24. Role of Neuropeptides and Neurotrophic Factors in Seizure Modulation

    Author : Avtandil Nanobashvili; Lund Neurologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neuropsychology; neurophysiology; brain slice; entorhinal cortex; hippocampus; galanin; glial cell line-derived neurotrophic factor; neuropeptide Y; epilepsy; kindling; Neurology; neurofysiologi; neuropsykologi; Neurologi;

    Abstract : The presented thesis explores role of glial cell line derived neurotrophic factor family receptor a2 (GFRa2), as well as neuropeptide Y (NPY) and galanin and their receptors in modulation of seizure activity. We demonstrate that mice lacking the GFRa2 gene (GFRa2-/-) exhibit suppressed seizure generalization in traditional and rapid kindling models. READ MORE

  7. 25. Learning from Interactions : Forward and Inverse Decision-Making for Autonomous Dynamical Systems

    Author : Inês de Miranda de Matos Lourenço; Bo Wahlberg; Sandra Hirche; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Intelligent systems; autonomous decision-making; Reinforcement Learning; Markov models; Human-Robot Interaction; Biologically-inspired systems; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Decision-making is the mechanism of using available information to generate solutions to given problems by forming preferences, beliefs, and selecting courses of action amongst several alternatives. In this thesis, we study the mechanisms that generate behavior (the forward problem) and how their characteristics can explain observed behavior (the inverse problem). READ MORE