Sökning: "Spores"
Visar resultat 1 - 5 av 62 avhandlingar innehållade ordet Spores.
1. Early land plant spores from the Paleozoic of Sweden – taxonomy, stratigraphy and paleoenvironments
Sammanfattning : The Silurian through earliest Devonian, between ca 444 and 412 million years ago, was characterized by significant changes in global climate and environment. At that time, plants and animals had begun to expand the colonization of previous relatively desolate terrestrial landscape. LÄS MER
2. Buellia species with pluriseptate spores and the Physciaceae (Lecanorales, Ascomycotina) : Taxonomic, phylogenetic and ultrastructural studies
Sammanfattning : This dissertation is primarily focused on the Buellia species with pluriseptate spores, often referred to the section or genus Diplotomma, and secondarily on the Physciaceae. An ultrastructural study at family level gives new information on spore characters. LÄS MER
3. Bacillus Cereus. Adhesion Ability to Biological and Non-Biological Surfaces, Enterotoxins, Characterization
Sammanfattning : The organism investigated in this thesis was Bacillus cereus, which is important as a food spoilage organism and as a pathogen. The adhesion of endospores to and the removal of endospores from siliconized glass surfaces were investigated to increase the knowledge of adhesion mechanisms and to improve the removal of endospores from surfaces. LÄS MER
4. Adhesion Mechanisms of Bacterial Spores to Solid Surfaces
Sammanfattning : The initial adhesion of different Bacillus spores to solid surfaces was investigated. By changing environmental parameters and studying the subsequent adhesion, conclusions have been drawn concerning the different mechanisms responsible for adhesion. Bacillus species are common microorganisms and in food industry they are common food spoilers. LÄS MER
5. KNOW YOUR ENEMY : Characterizing Pathogenic Biomaterials Using Laser Tweezers
Sammanfattning : Diseases caused by pathogenic agents such as bacteria and viruses result in devastating costs on personal and societal levels. However, it is not just the emergence of new diseases that is problematic. Antibiotic resistance among bacteria makes uncomplicated infections difficult and lethal. LÄS MER