Livestock grazing is the prominent land use in Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis [Beetle & A. Young] S.L. Welsh) steppe and has been present since the late 1800’s. There have been calls to remove livestock grazing from rangelands as historic grazing practices resulted in the degradation of some...
Delta-sigma data converters have gained popularity in both analog-to-digital and digital-to-analog converters (ADCs and DACs) due to their simplicity, high linearity and immunity to many analog circuit imperfections. These data converters include features such as oversampling, noise-shaping, and (historically) single-bit quantization. Single-bit converters are preferred for their inherent linearity. This...
Polycyclic aromatic hydrocarbons (PAHs) are complex mixtures that form when organic matter is burned. Humans are primarily exposed to PAHs via air pollution from incomplete combustion of fossil fuels and biomass, such a motor vehicle exhaust, cigarette smoke, wood smoke, or industrial emissions; or via ingestion of PAHs bound to...
The recency of the Food and Drug Administration menu-labeling regulations and the lack of research available on restaurateur response initiated this study. Advocates claim the new regulations will protect consumers and foster the selection of nutritious choices, however, critics believe the regulations will result in restaurateurs removing all nutrition information...
Anaerobic digestion is a biological process in which organic matter is decomposed by a community of microbes in the absence of oxygen. The end product of anaerobic digestion is biogas, composed of methane and carbon dioxide, which is often recovered and used to generate energy. Commonly, biogas is not produced...
Species distribution models (SDMs) are currently being used to identify essential fish habitat and guide
fisheries management worldwide. We present SDMs based on generalized linear mixed models (GLMM) of
the fall distribution or occurrence of juvenile American shad (Alosa sapidissima) and juvenile striped bass
(Morone saxatilis) in the Hudson River...
The overall focus of this thesis is on the distribution of specific lipids and membrane proteins of the external and internal membranes of plant cells, in the context of the roles that those lipids and proteins may play in microbe-plant interactions. The work includes the development of several new tools,...
A dissertation describing the results of a series of greenhouse experiments conducted to better understand phytoremediation in stormwater bioretention systems.
Contaminants in stormwater such as heavy metals, PFASs, PCBs, and PAHs are an issue for public infrastructure and remediation practices. Biochar, granular activated carbon (GAC), OGSIR soil, and commercial adsorbent materials have been evaluated with the heavy metals Cu2+ and Zn2+. Copper and zinc as stormwater contaminants were treated with...