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Visar resultat 16 - 20 av 128 avhandlingar som matchar ovanstående sökkriterier.

1. 16. Plant community assembly during succession from arable fields to semi-natural grassland

   Författare :Barbara Christine Schmid; Biodiversitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; diversity; arable-to-grassland succession; space-for-time approach; land-use history; plant community assembly; grazing management; connectivity measures; dispersal vector; vascular plants; grassland specialist conservation;

   Sammanfattning : Large areas of grazed, species rich semi-natural grassland were lost in Europe during the last two centuries and as a consequence led to decreases in grassland specialist species. Therefore, today the “restoration” of grassland on previously arable fields is recommended for the protection of grassland specialists. LÄS MER

3. 17. Tissue tropism among group A streptococci - importance of bacteria associated proteolytic activity

   Författare :Mikael Dag Svensson; Malmö Institutionen för kliniska vetenskaper; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cysteine protease; plasminogen; M protein; Streptococcus pyogenes; tissue tropism; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

   Sammanfattning : Group A streptococcus (GAS) is one of the most common of bacterial pathogens infecting humans, frequently causing throat and skin infection. Some GAS strains have surface-expressed virulence factors called M proteins that bind human plasminogen with high affinity. LÄS MER

4. 18. Ett fett liv : En artikulering av viktordningen på bas av överviktiga människors erfarenheter

   Författare :Aimée Ekman; Bengt Richt; Gunilla Tegern; Eklina Oinas; Linköpings universitet; []
   Nyckelord :The weight order; ordering; form; action perspective; grounded theory; fat studies; critical perspective; fatness; overweight; body weight; experience; Viktordningen; ordnande; form; handlingsperspektiv; grounded theory; fat studies; kritisk fetma forskning; fetma; övervikt; kroppsvikt; erfarenhet;

   Sammanfattning : Syftet med den här avhandlingen är att utveckla en begreppslig och teoretiserande förståelse för villkor och möjligheter i överviktiga personers handlingsliv. Med utgångspunkt i intervjuer med femton feta svenskar har slutpunkten för studien kommit att bli en artikulering av processer och subprocesser inom viktordningen. LÄS MER

5. 19. Wood Hemicelluloses - Fundamental Insights on Biological and Technical Properties

   Författare :Jennie Berglund; Mikael Lindström; Gunnar Henriksson; Francisco Vilaplana; Jakob Wohlert; Martin Lawoko; Maija Tenkanen; KTH; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; hemicellulose; wood; glucomannan; xylan; structure; acetylation; flexibility; solubility; interaction with cellulose; stability.; hemicellulosa; trä; glukomannan; xylan; struktur; acetylering; flexibilitet; löslighet; interaktion med cellulosa; stabilitet.; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : Hemicelluloses are a group of heterogeneous polysaccharides representing around 30 % of wood where the dominating types are xylans, glucomannans and xyloglucans. Hemicelluloses complex molecular structure makes it difficult to understand the relationship between structure and properties entirely, and their biological role is not yet fully verified. LÄS MER

7. 20. Analysis of Structure, Composition and Growth of Semiconductor Nanowires by Transmission Electron Microscopy

   Författare :Martin Ek; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Transmission electron microscopy; nanowires; III-V semiconductors; polarity; in-situ TEM;

   Sammanfattning : Nanowires have the potential to be a very flexible platform for the design of semiconductor devices. In nanowires it is possible to form crystal structures not found in the bulk materials under normal conditions, and to combine different III-V and group IV materials into axial or radial heterostructures. LÄS MER