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Full-Text Articles in Life Sciences
Volatile Profiles And Resistance To Herbivory In Eastern Hemlock, Elizabeth A. Mckenzie
Volatile Profiles And Resistance To Herbivory In Eastern Hemlock, Elizabeth A. Mckenzie
Masters Theses
Eastern hemlock hosts the hemlock woolly adelgid, an introduced sap-feeding insect that causes rapid deterioration of the host. Like most conifers, eastern hemlock produces a variety of constitutive and induced defenses, primarily terpenoids. To explore the relationship of terpenoid defenses with adelgid infestations, we artificially infested hemlocks at a forest site and a plantation site, and compared their terpenoid concentrations to those in control trees. Infested trees showed lower terpenoid concentrations than control trees, suggesting that eastern hemlock not only fails to induce production of terpenoids in response to adelgid infestation, but becomes less able to produce carbon-based defenses due …
Modification Of Gold Nanoparticles For Sers Application In Emulsion And Lipid Systems, Michael J. Driver
Modification Of Gold Nanoparticles For Sers Application In Emulsion And Lipid Systems, Michael J. Driver
Masters Theses
Gold nanoparticles produced using the Turkevich method were able to have their hydrophobicity modified using octanethiol in a novel method for SERS application. Both amphiliphic GNPs and hydrophobic GNPs were produced and differentiated by Raman signals. The amphiliphic GNPs were able to enhance the SERS signals of the protein emulsifier in the emulsion in situ and the hydrophobic GNPs were able to enhance the SERS signals from canola oil. Further purification of the hydrophobic GNPs proved to have higher enhancement and sensitivity, but still poor consistency which is typical of SERS. Monitoring lipid oxidation using Raman and SERS using alternative …