Search for dissertations about: "SUBSTITUTIONS"
Showing result 1 - 5 of 197 swedish dissertations containing the word SUBSTITUTIONS.
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1. Portland Cement Clinker - Composition and Hydration
Abstract : The crystal structures of the main Portland cement clinker phases are reviewed and two anion centered models of Ca3SiO5 and Ca2SiO4 are presented. The effects of minor elements on the clinkering process, and on the qualitative and quantitative phase compositions of Portland cement clinker are discussed. READ MORE
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2. Meiotic Recombination in Human and Dog : Targets, Consequences and Implications for Genome Evolution
Abstract : Understanding the mechanism of recombination has important implications for genome evolution and genomic variability. The work presented in this thesis studies the properties of recombination by investigating the effects it has on genome evolution in humans and dogs. READ MORE
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3. Evolutionary Dynamics of Mutation and Gene Transfer in Bacteria
Abstract : The study of bacterial evolution is fundamental for addressing current problems of antibiotic resistance and emerging infectious diseases and lays a solid foundation for successful and rational design in biotechnology and synthetic biology. The main aim of this thesis is to test evolutionary hypotheses, largely based on theoretical considerations and sequence analysis, by designing scenarios in a laboratory setting to obtain experimental data. READ MORE
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4. Nucleotide Substitution Patterns in Vertebrate Genomes
Abstract : The rates and patterns at which nucleotide substitutions occur vary significantly across the genome sequence of vertebrates. A prominent example is the difference in the rate of evolution of functional sequences versus nonfunctional (neutrally evolving) sequences, which is explained by the influence of natural selection on functional sequences. READ MORE
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5. Studies of magnetoresistance and Y substitutions in YBa2Cu3O7-delta high temperature superconductors
Abstract : .... READ MORE