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Articles 1 - 4 of 4
Full-Text Articles in Chemistry
Northern Fulmars (Fulmarus Glacialis) As Bio-Indicators Of Endocrine Disrupting Plasticizers In The Marine Surface Environment., Olivia Feinstein
Northern Fulmars (Fulmarus Glacialis) As Bio-Indicators Of Endocrine Disrupting Plasticizers In The Marine Surface Environment., Olivia Feinstein
Summer Research
The plastics that make up over 10% of human waste are synthesized with phthalate plasticizers which are utilized in plastics as an additive to improve durability and flexibility. Many phthalates have been identified as endocrine disrupting chemicals (EDCs) and studies have shown dramatic deleterious effects as a result of species exposure to growing numbers of EDCs in the environment. Northern Fulmars (Fulmarus glacialis) are a northern hemisphere seabird species that forages opportunistically, meaning that they take advantage of a wide variety of different food sources, including inadvertent consumption of plastic. In addition to occupying space in the individuals’ …
In-Use Measurement Of Locomotive Emissions, Matt Breuer
In-Use Measurement Of Locomotive Emissions, Matt Breuer
Summer Research
The Environmental Protection Agency’s newest emissions standards set into law in 2004, which took effect in 2010, limited the level of emissions that locomotives are allowed to produce. For the most part, these standards have been verified in the laboratory and not while the locomotives were in actual use. My research looked at the emissions from these locomotives in-use, under normal operating conditions. The measurements took place on two Pierce County bridges that are above operating train tracks. A remote sensing device (the FEAT) was used to look at locomotive emissions of CO, HC, NO, NO2, SO2, …
Anisotropic Diffusivity Of The Prismatic Surface Of Ice Is Model Independent, Natalie D. Bowens
Anisotropic Diffusivity Of The Prismatic Surface Of Ice Is Model Independent, Natalie D. Bowens
Summer Research
In simulations reported by Gladich et al., the surface diffusion on the prismatic surface of ice was found to be anisotropic at low temperatures and isotropic at high temperatures in the NE6 model. Our research investigated whether this effect is a true property of ice, or an artifact of NE6 model, by using the TIP4P/2005 and the TIP5P-EW representations. It was found that anisotropy of surface diffusion on the Prismatic facet at low temperatures is model independent. An Arrhenius analysis was also preformed to find the activation energies of diffusion in both models.
Behavioral And Chemical Analysis Of Deposited Chemical Cues In Striped Plateau Lizards, Jay Goldberg
Behavioral And Chemical Analysis Of Deposited Chemical Cues In Striped Plateau Lizards, Jay Goldberg
Summer Research
Many pheromones are produced by glands and deposited on substrates throughout the environment. Lizards possess an array of glands that secrete chemical cue. During mating seasons the glandular secretions of many lizards contain elevated levels of lipophilic compounds including: free-fatty acids, sterols, and long-chain fatty alcohols. This study examines the effect of season and hydrophobicity of chemicals on male response to female deposited chemical cues in the Striped Plateau Lizard (Sceloporous virgatus). Cues were collected and then scraped into a vial containing hexane and water in order to separate hydrophilic and lipophilic molecules. Chemical cue fractions were then …