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Browsing by Subject "Silver"

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    Chemosensory Control of Filter Feeding Behavior in Bigheaded Carps
    (2015-05) Claus, Aaron
    Bigheaded carps (silver carp, Hypophthalmichthys molitrix and bighead carp, H. nobilis) were used to investigate the physiological basis of filter feeding behavior in fish. I developed a new method for assaying chemically based food preferences by tracking the frequency of buccal-pharyngeal pumping behavior before and after a food and food chemical stimuli were presented. Spirulina algae (Arthrospira spp.), a cyanobacterium, was the most potent food type in releasing BPP behavior. Quality and quantity of chemical cues were important to the BPP response. Moderate responses to a mixture of L-Amino acids (common fish feeding cues) confirm their function in this genus but also suggest that there are other highly potent odorants and/or tastants present in the food mix filtrate. BPP behavior was markedly reduced without a functional olfactory sense. These results cumulatively suggest that chemical senses are integral to filter feeding behavior of Bigheaded carp.
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    Understanding Fraud in the Silver Mining Districts of the Western United States in the Second Half of the 19th Century
    (2016-02-18) Miller, Baylee, A.
    The mining industry has recorded many events of large fraud. The Comstock Lode in particular had several different types of fraud committed at different stages in the time frame of a mine in operation. The history of the Comstock Lode is important to understanding how lies can be believed, and has an impact on current day investments. Enormous cases of fraud have occurred since the Comstock Lode, and the methods of fraud are largely similar. Identifying where and how fraud occurs that leads to it going unnoticed is necessary for prevention. Additionally, rules and regulations need to be made and followed to ensure that claims are indeed what they appear to be. The Comstock Lode will be the main area of focus due to the typical occurrence of fraud in this region during its development.