Search for dissertations about: "shape evolution"

Showing result 1 - 5 of 170 swedish dissertations containing the words shape evolution.

2. 1. Evolution of Plants : a mathematical perspective

   Author : Magnus Lindh; Åke Brännström; Jacob Johansson; Mats G Larson; Lennart Persson; Claus Rüffler; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Evolution; plants; mathematics; optimization; optimal control; adaptive dynamics; flowering; seasons; tree crown; drought; taproot; trade-off; strategy; trait; ESS; NPP; LAI; Red Queen; Mathematics; matematik;

   Abstract : The Earth harbors around 300 000 plant species. The rich and complex environment provided by plants is considered a key factor for the extraordinary diversity of the terrestrial fauna by, for example, providing food and shelter. READ MORE

4. 2. Evolution of artificial defects during shape rolling

   Author : Mirjana Filipovic; Stefan Jonsson; Per-Olov Perä; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shape rolling; wire rod rolling; artificial defects; defect evolution; surface cracks; porosity; FEM; high speed steel; stainless steel; Other materials science; Övrig teknisk materialvetenskap; Initiering och utveckling av defekter under spårvalsning;

   Abstract : Very often defects are present in rolled products. For wire rods, defects are very deleterious since the wire rods are generally used directly in various applications. For this reason, the market nowadays requires wire rods to be completely defect-free. Any wire with defects must be rejected as scrap which is very costly for the production mill. READ MORE

5. 3. Evolutionary trajectories of Klebsiella pneumoniae : From experimental biofilm evolution to a hospital outbreak

   Author : Greta Zaborskytė; Linus Sandegren; Vaughn S. Cooper; Uppsala universitet; []
   Keywords : Klebsiella pneumoniae; evolution; experimental evolution; biofilms; infection; bacterial pathogens; Mikrobiologi; Microbiology;

   Abstract : Bacterial evolution is closely intertwined with our lives. As their hosts, we shape how bacteria evolve by imposing numerous selective pressures during the time bacteria spend in our bodies. As a result, they adapt in various ways to colonize us or infect us better. READ MORE

6. 4. Trees of Knowledge : Science and the Shape of Genealogy

   Author : Petter Hellström; H. Otto Sibum; Jenny Beckman; Hanna Hodacs; John Tresch; Uppsala universitet; []
   Keywords : HUMANIORA; HUMANITIES; cultural history of science; science and metaphor; science and visual representation; family trees; tree diagrams; information management; classification; natural history; philology; music theory; genealogy; evolution; secularisation; Enlightenment; French Revolution; Augustin Augier 1758–1825 ; Félix Gallet 1773–c. 1840 47 ; Henri Montan Berton 1767–1844 .; History of Sciences and Ideas; Idé- och lärdomshistoria;

   Abstract : This study investigates early employments of family trees in the modern sciences, in order to historicise their iconic status and now established uses, notably in evolutionary biology and linguistics. Moving beyond disciplinary accounts to consider the wider cultural background, it examines how early uses within the sciences transformed family trees as a format of visual representation, as well as the meanings invested in them. READ MORE

7. 5. Genome Evolution and Niche Differentiation of Bacterial Endosymbionts

   Author : Kirsten Maren Ellegaard; Siv Andersson; Andrés Moya; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; niche; habitat; endosymbiont; gut microbiome; honey bee; Wolbachia; comparative; genomics;

   Abstract : Most animals contain chronic microbial infections that inflict no harm on their hosts. Recently, the gut microflora of humans and other animals have been characterized. However, little is known about the forces that shape the diversity of these bacterial communities. READ MORE