Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"Diversity Analysis"”.
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Diversity Analysis of Soil Fungus Communities in Disturbed, Nursery, and Mature Forest Conditions
… sequencing methods, allowing for the analysis of species richness and evenness, diversity, and functional diversity. Both nurseries had relatively higher amounts of plant pathogens and saprotrophs, and so it was determined that the plants would not be bringing many beneficial soil …
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Crowd equals diversity? a diversity analysis on participation of agency-sponsored open innovation challenges
… societal debates on how to measure and increase diversity in fields such as Science, Technology, Engineering, and Math (STEM). In the past decade, many US public agencies with STEM missions have explored crowd-sourced, open innovation challenges as a potential solution. To probe whether and how …
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HIV subtype C diversity: analysis of the relationship of sequence diversity to proposed epitope locations
… design difficult. We examined HIV-1 subtype C diversity and how it relates to CTL epitope location along viral gag sequences. We found a negative correlation between codon sites under positive selection and epitope regions; suggesting epitope regions are evolutionarily conserved. It is possible …
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Molecular Mapping of Disease-Related Expressed Sequence Tags and Resistance Gene Analogues in Soybean
… (RGAs), 2) assess the utility of such markers by diversity analysis of 12 soybean parental lines, and 3) search for possible association of the markers with known disease resistance genes by constructing a linkage map. The diversity analysis will allow this study to determine how well each marker …
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Bacterial Diversity of the Atacama Desert, Chile: The Challenges of Characterizing the Community Dynamics of Extreme Oligotrophic Ecosystems
This dissertation examines the bacterial diversity of hyperarid and arid regions of the Atacama Desert, Chile, as a first step towards understanding the global biogeochemical significance of arid-land microbial communities. The specific objectives were to characterize bacterial diversity and infer …
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Vegetation change and vegetation type stability in the Cape of Good Hope Nature Reserve 1966 - 2010
… were to investigate changes in overall species diversity within the reserve, stability of community composition within and between sites, and which factors are influencing stability. A survey was conducted on 26 vegetation plots across the reserve. Data from this survey and two previous surveys …
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Linking fitness and the microbiota: exploring variation in microbial composition in the North American red squirrel (Tamiasciurus hudsonicus).
… also displayed significant variation in beta diversity analysis between recaptures. As such, future research should be cautious in interpreting results from a single temporal sampling period when quantifying characteristic microbiota composition in wild mammals, and should account for …
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A functional and trait-based approach in understanding ant community assembly in the Soutpansberg Mountains, South Africa
The concept of taxonomic diversity has been widely used to investigate diversity patterns and the mechanism underlying community assembly. However, functional and trait diversity can further explain the factors driving community assembly because they capture different aspects of species ecological …
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Diversity oriented, computer guided catalyst design: Application of chemoinformatics to catalysis
… 3) focus on the development and application of a diversity oriented, computer guided catalyst optimization chemoinformatic workflow. This process seeks to combine the power of chemoinformatic diversity analysis and QSAR modeling with diversity and discovery oriented synthesis to rapidly and …
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The Gut Microbiome: Is Fecal Matter Microbial Composition a Proxy for Intestinal Microbial Composition in Studies of the Microbiome
… that use this method of sample collection and analysis assume that fecal matter microbiomes are similar to intestinal microbiomes, and that it can be used as a proxy. At present, no published studies exist which directly compare stool microbial composition and intestinal microbial composition. …
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Microbiome Dynamics in Broilers Infected with Infectious Bronchitis Virus and the Protective Role of Lactobacillus-Based Probiotics
… compared to control. Significantly higher alpha diversity indexes including observed Operational Taxonomic Units (OTUs) and Shannon was observed in IBV challenged group compared to control in cecum at 6 and 15 dpi, whereas tracheal microbiome of IBV challenged group showed significantly higher …
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Morpho-agronomic and genetic variation and segregation patterns of phaseolus vulgaris landraces from selected provinces of South Africa
… in seed colour, shape, and size. The genetic diversity analysis with simple sequence repeat (SSR) markers revealed the range of genetic diversity, observed heterozygosity, and polymorphic information content as 0.00–0.65, 0.00–0.05, and 0.00–0.58, respectively. The population structure divided …
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Measuring the abundance, diversity and overlap of Antimicrobial Resistance genes associated with humans, livestock and the environment in low- and middle-income country settings
… Fluidigm HT-qPCR, I measured the abundance and diversity of AMR at a One Health, human-animal-environment interface. I additionally employed the same platform to evaluate the impact of intervention in reducing AMR in the poultry production system and to examine differential gene expression of …
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The characterization of MHC Class II genes of the Nile crocodile (Crocodylus niloticus) : an investigation of mechanisms that shape genetic diversity in natural populations
… to explain the generation and maintenance of diversity at MHC loci, including the processes of gene conversion, genetic drift and selection; in the presence of many pathogens balancing selection is thought to be the dominant mechanism by which selection operates. Amino acid substitutions …
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Genetic studies of candidate genes in the glycoalkaloid biosynthetic pathway of potato
… gene approach and a whole genome SNP genotyping analysis were used to assess allelic variation and to identify loci associated with biosynthesis and accumulation of steroidal glycoalkaloids (SGAs). SGAs are secondary metabolites produced in Solanum species as defense against insects and …
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Multiframe Superresolution Techniques For Distributed Imaging Systems
… 570% by using 16 cameras and a large amount of diversity in deployment.We develop a new technique for superresolving binary imagery by incorporating finite-alphabet prior knowledge. We employ a message-passing based algorithm called two-dimensional distributed data detection (2D4) to estimate …
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Investigation of temperature effects on subsurface attenuation of nitroaromatic compounds
… degradations products were detected. Microbial diversity analysis revealed that the contaminated transmissive zone was dominated by Pseudomonas stutzeri, a facultative aerobe that has been shown to degrade a variety of monoaromatic compounds including chloronitrobenzene and chlorobenzene. At …
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Discovery of Novel Glycogen Synthase Kinase-3beta Inhibitors: Molecular Modeling, Virtual Screening, and Biological Evaluation
… approach, which included pharmacophore modeling, diversity analysis, and ensemble docking. The sensitivities of different docking protocols to the induced-fit effects at the ATP-competitive binding pocket of GSK-3â have been explored. An enrichment study was employed to verify the robustness of …
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Bioprospecting for novel marine polysaccharides for the life sciences
… have a staggering diversity of structural and chemical properties that affect the biological activity, with some used for cryopreservation and others to degrade oil as a carbon source. In some cases, polysaccharides display biocompatibility, scalability and …
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The First Insights into the Phylogeny, Genomics, and Ecology of the Novel Bacterial Phylum Armatimonadetes
… the current knowledge gaps on microbial diversity. This was achieved by integrating multiple data types (phylogenetics, genomics, and community profiling metagenomics). The initial stage of this research aimed to address and clarify conflicts in reported phylogeny of the phylum …
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