Search for dissertations about: "umbrella"

Showing result 1 - 5 of 88 swedish dissertations containing the word umbrella.

  2. 1. Population Dynamics and Conservation of the Sand Lizard (Lacerta agilis) on the Edge of its Range

    Author : Sven-Åke Berglind; Pekka Pamilo; Per Sjögren-Gulve; Coulson Tim; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; demography; extinction; habitat; Lacerta agilis; management; metapopulation; peripheral populations; population dynamics; population viability analysis; reintroduction; reptiles; umbrella species; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Abstract : The sand lizard (Lacerta agilis) reaches the northern periphery of its distribution in south-central Sweden, where small, isolated relict populations occur in pine heath forests on sandy sediments. Modern forestry and fire suppression have reduced the amount of suitable open habitat for the species in this area and seem to be important for its decline. READ MORE

  4. 2. Computational Studies of Protein-ligand Systems Using Enhanced Sampling Methods

    Author : Rongfeng Zou; Yaoquan Tu; Leif Eriksson; KTH; []
    Keywords : molecular dynamics; enhanced sampling; protein-ligand interactions; umbrella sampling; metadynamics; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Abstract : This thesis focuses on studies of protein-ligand systems using enhanced sampling methods. In chapter I, I give a brief introduction to the time-scale problem and some enhanced sampling methods. In chapter II, the basics of MD simulation are reviewed. READ MORE

  5. 3. Female sex hormones and health outcomes in women with specific focus on asthma

    Author : Guo-Qiang Zhang; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; asthma; Bayesian estimation; case-control; causal inference; estrogens; female sex hormones; hormonal contraceptives; menarche; menopausal hormone therapy; menopause; meta-analysis; multiple imputation; progestogens; research reproducibility; robust variance estimation; systematic review; umbrella review; women;

    Abstract : In humans, gender differences exist across a wide spectrum of diseases. For instance, women are more likely to develop Sjogren’s syndrome, systemic lupus erythematosus, and autoimmune thyroid disease compared to men. READ MORE

  6. 4. Reaction-Diffusion kinetics of Protein DNA Interactions

    Author : Anel Mahmutovic; Johan Elf; David van der Spoel; Pieter Rein ten Wolde; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; umbrella sampling; molecular dynamics; RDME; PDE; sliding; intersegment transfer; hopping; sterics; intersegment transfer; Biology with specialization in Molecular Biotechnology; Biologi med inriktning mot molekylär bioteknik;

    Abstract : Transcription factors need to rapidly find one specific binding site among millions of nonspecific sites on the chromosomal DNA. In this thesis I use various aspects of reaction-diffusion theory to investigate the interaction between proteins and DNA and to explain the searching, finding and binding to specific operator sites. READ MORE

  7. 5. Nitriles in Prebiotic Chemistry and Astrobiology

    Author : Hilda Sandström; Chalmers tekniska högskola; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; astrobiology; polymer chemistry; hydrogen cyanide; density functional theory; molecular dynamics; metadynamics; umbrella sampling; prebiotic chemistry;

    Abstract : Life appeared on Earth within a billion years of the planet’s formation. How? - no one knows. Theories regarding the origin of life involve reactions of molecules predicted to have existed on early Earth in what is called prebiotic chemistry. READ MORE