Sökning: "morphological disparity"
Hittade 4 uppsatser innehållade orden morphological disparity.
1. Morphological study of PS/PMMA-matrix on glass, related to vapour pressure, mass-fraction, and size
Kandidat-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)Sammanfattning : The objective of this study is to observe how changing amount or ratio between dried mixes of poly-methyl-methacrylate and poly-styrene change the surface appearance, and how the results might inform future design of Organic photovoltaic cells, whom are based on polymer mixtures and heavenly dependent on the arrangement of polymers. An atomic force microscope was used on glass surfaces coated in a poly-methyl-methacrylate/poly-styrene matrix and dried from either dichloromethane or ethyl-acetate to determine surface appearance. LÄS MER
2. Dynamics of Selachian (Shark) Dental Morphology During the Early Mesozoic
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : The ancestors of all modern day sharks and rays (Neoselachii) may have appeared during the Late Palaeozoic, but their major diversification happened sometime during the Early Mesozoic. Taxonomic evidence places the first neoselachian diversification in the Early Jurassic. LÄS MER
3. Growth and biodegradation by Sporidiobolales yeasts in vanillin-supplemented medium
Kandidat-uppsats, Högskolan i Gävle/Avdelningen för arbets- och folkhälsovetenskapSammanfattning : Studies of biodegradation in lignins by basidiomycetes yeasts show the conversion of lignin in various degradation products among which vanillin, a valuable substance, suggested to be a strong inhibitor of both fermentation and growth of yeasts, stands. Sporidiobolales yeasts used in these experiments were aimed to be identified by their highly conserved ITS region as well as studied in vanillinsupplemented medium through, vanillin-supplemented plates, TLC and Neubauer’s chamber to find out which, among the several isolates tested, were the most resistant ones, understand how they take up vanillin and how their growth is affected by the presence of the phenolic compound. LÄS MER
4. Disparity of Early Cretaceous Lamniformes sharks
Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : The geological range of lamniform sharks stretches from present day species such as Carcharodon carcharias (great white shark) back to the at the moment oldest undoubted fossil finds during the Early Cretaceous. In this paper a geometric morphometric analysis was performed on images of Early Cretaceous lamniform teeth collected from published literature in order to examine the change in disparity (range of morphological variation within a group) throughout the time period. LÄS MER