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 33 for “"Biological Assessment"”.
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Biological assessment of tropical riverine systems using aquatic macroinvertebrates in Tanzania, East Africa
In Tanzania, and in East Africa in general, bioassessment methods for monitoring and assessing riverine ecosystems are not yet in place. This thesis describes the development of a macroinvertebrate-based bioassessment method for assessing the degree of anthropogenic disturbance in Tanzanian rivers. …
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Selective laser sintering of bioactive glass scaffolds and their biological assessment for bone repair
<p>"Bone scaffold fabrication using powder-bed based additive manufacturing techniques, like the selective laser sintering (SLS) process, provides control over pore interconnectivity, pore geometry, and the overall shape of the scaffold, which aids in repairing different regions of the bone. The …
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A Biological Assessment of the Fish and Benthic Macroinvertebrates From Two Urban Streams in Springfield, Missouri
This study assessed the health of two biotic communities in Jordan and Galloway Creeks in Springfield, Missouri. Fish and benthic macroinvertabrate samples were collected from each stream using the U.S. Environmental Protection Agency’s Rapid Bioassesment Protocols for Use in Wadeable Streams and …
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A Biological Assessment of Four Northern Black Hills Streams and the Reproductive Success of Longnose Dace (Rhinichthys cataractae)
… Creek, South Dakota were assessed using rapid bioassessment techniques for benthic macroinvertebrates and reproductive competency of longnose dace (Rhinichthys cataractae). Fish and anuran species richness were also determined. Whitewood Creek biota were compared to three adjacent streams: Bear …
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Impact zone delineation for biological assessment of power plant effluent effects on snail populations in the Clinch River
… change is a better approach to impact assessment than approaches that only use functional measurements.
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Improvement of a cell-based test system for the biological assessment of plastics for use in single-use bioreactors
… published a standard guide for cell growth assessment of SU material (designation E3231-19), representing current best practices for biocompatibility testing of bioprocessing materials [1]. This thesis aimed at refining a CHO-based assay for biocompatibility assessment based on the ASTM …
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Correspondence Between Aquatic Ecoregions and the Distribution of Fish Communities of Eastern Oklahoma
… spatial classification for the development of biological assessment methods and biocriteria. I used indirect ordination and classification to identify groups of sites that support similar fish communities. Although correspondence was observed between fish assemblages and three montane …
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Ranges of consideration: crossing the fields of ecology, philosophy and science studies.
… significance of nonhumans (prairie dogs, cattle, biological assessment sheets, environmental laws, etc.) in the human community. Only by considering the roles of nonhumans do we broaden and enrich the conversation between ourselves concerning environmental issues.
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A bioactivity peptide QUB2852 from the frog skin secretion of pelophylax nigromaculata
… was confirmed through online alignment analysis. Biological assessment using the chemically synthesised replicates of QUB-2852 showed that it possessed potent antimicrobial activity against Gram-positive Bacteria Staphylococcus aureus at 32 μmol/l However, QUB-2852 showed relatively weaker …
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An Integrated Evaluation of the Conservation Reserve Enhancement Program in South Dakota
… receive undesired outcomes. In addition to the biological assessment, I integrated a human dimensions study to evaluate CREP landowner motivations for program enrollment. My study highlighted three themes of motivation for CREP enrollment. First, the requirement of providing public access with …
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An evaluation of SASS (South African scoring system) as a tool for the rapid bioassessment of water quality
… African Scoring System (SASS) is a rapid bioassessment technique based on one component of riverine biotas, the benthic macroinvertebrates. Each taxon is assigned a tolerance/sensitivity score, which are summed to provide a Total Score. The Average Score per Taxon (ASPT) is calculated by …
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Correlation Between Bioassessments of Macroinvertebrates and Fishes and Natural Land Cover in Virginia Coastal Plain Watersheds
… were no significant correlations between the biological assessment scores for either the benthic macroinvertebrate or the fish communities and UNLC at either scale. Analyses of physicochemical parameters and habitat metrics did show some significant correlations between those variables and …
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Ecological patterns, community classification, and a comparison of approaches for predicting biological and habitat reference conditions in New Hampshire streams
… to predict reference conditions for biological and habitat assessments. The fish, stream-dwelling salamander, macroinvertebrate and periphyton assemblages as well as the co-occurring physical habitat and riparian conditions of 76 minimally-impacted first to fourth order streams in New …
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Identification of gene expression changes in human cancer using bioinformatic approaches
… expression of these genes makes possible all the biological processes of life. Altered gene expression by mutation or deregulation is fundamental for the development of many human diseases. The ultimate aim of this thesis was to identify gene expression changes relevant to cancer. The advent of …
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Development of exosome-based anti-cancer therapeutics
… of the exosomes of interest. Consequently, biological assessment and metabolomic profiling of HepG2-Exo effect on different cancer and normal cell lines was carried out: A375 (melanoma), A549 (lung cancer), and PNT2A (normal prostate epithelium). The biological assays revealed that HepG2-Exo …
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Rapid measurements of periphytic responses to nutrients using PAM fluorimetry
<p>Water quality monitoring has traditionally been done by measuring periphytic algal biomass that has grown on fertilized or unfertilized patches of habitat produced by nutrientdiffusing substrata (NDS). This method requires the destruction of the accumulated periphyton communities and thus does …
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Studies of Benthic Macroinvertebrates in Western Virginia Streams as Related to the Implementation of Rapid Bioassessment Techniques
… showed that sampling date, slope, pH, habitat assessment score and distance to source were the best predictors of community structure. These environmental variables correctly classified 52.8% of the reference sites. These classification rates are comparable to rates published in similar …
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