Search for dissertations about: "Length"

Showing result 1 - 5 of 2434 swedish dissertations containing the word Length.

  1. 1. Telomere length dynamics and role as a biological marker in malignancy

    University dissertation from Umeå : Umeå University

    Author : Ulrika Svenson; Umeå universitet.; [2012]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Telomere length; peripheral blood; immune cells; breast cancer; renal cell carcinoma; biological marker; patologi; Pathology;

    Abstract : Telomeres are protective structures at the end of our chromosomes, composed of multiple repeats of the DNA sequence TTAGGG. They are essential for maintaining chromosomal stability by preventing damage and degradation of the chromosome ends. READ MORE

  2. 2. Estimation of wood fibre length distributions from censored mixture data

    University dissertation from Umeå : Matematik och matematisk statistik

    Author : Ingrid Svensson; Umeå universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; censoring; fibre length distribution; identifiability; increment core; length bias; mixture; stochastic EM algorithm; MATHEMATICS Applied mathematics Mathematical statistics; MATEMATIK Tillämpad matematik Matematisk statistik;

    Abstract : The motivating forestry background for this thesis is the need for fast, non-destructive, and cost-efficient methods to estimate fibre length distributions in standing trees in order to evaluate the effect of silvicultural methods and breeding programs on fibre length. The usage of increment cores is a commonly used non-destructive sampling method in forestry. READ MORE

  3. 3. Variation in length of proteins by repeats and disorder regions

    University dissertation from Stockholm, Sweden : Department of Biochemistry and Biophysics, Stockholm University

    Author : Rauan Sagit; Stockholms universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; protein length; repeats; domain repeats; protein evolution; duplication; tandem duplication; intrinsic disorder; intrinsically disordered; variation in length; insertion; deletion; recombination; expansion; contraction; biokemi; Biochemistry;

    Abstract : Protein-coding genes evolve together with their genome and acquire changes, some of which affect the length of their protein products. This explains why equivalent proteins from different species can exhibit length differences. READ MORE

  4. 4. Evolution of Spur Length in a Moth-pollinated Orchid

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Elin Boberg; Uppsala universitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Platanthera bifolia; floral evolution; natural selection; pollination; spur length; population differentiation; divergent selection; disruptive selection; reproductive isolation; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Ecological Botany; Ekologisk botanik;

    Abstract : There is considerable evidence that pollinator shifts can explain many differences in flower morphology between closely related plant species, but the extent to which pollinator shifts can explain the maintenance of among-population variation in floral traits within species is poorly known. In this thesis, I combined comparative and experimental approaches to examine the evolution of floral traits in the moth-pollinated orchid Platanthera bifolia. READ MORE

  5. 5. Telomere length - inheritance pattern and role as a biomarker

    University dissertation from Umeå : Medicinsk biovetenskap

    Author : Katarina Nordfjäll; Umeå universitet.; [2008]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; telomere length; peripheral blood; inheritance; breast cancer; survival; polymorphism; MEDICINE Morphology; cell biology; pathology Cell biology Medical cell biology; MEDICIN Morfologi; cellbiologi; patologi Cellbiologi Medicinsk cellbiologi;

    Abstract : Telomeres are repetitive TTAGGG structures ending each chromosome and thereby protecting its integrity. Due to the end-replication problem, telomeres shorten with each cell division. When reaching a critical telomere length (TL), the cells stop dividing and enter replicative senescence. READ MORE