2010 MU theses - Access restricted to MU
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The items in this collection are theses that are available only to members of the University of Missouri-Columbia campus. Click on one of the browse buttons above for a complete listing of the works.
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Item Effects of ingredients on gel properties and salt-soluble proteins of sirimi from silver carp(University of Missouri--Columbia, 2010) Liu, Yang (Food scientist); Clarke, Andrew Douglas[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Silver carp (Hypophthalmichthys molitrix) are an introduced species in central North America that cause enormous environmental damage and have little economic value. They can be regarded as a potential source of surimi products in order to add commercial value. The objectives of this research are to determine, by response surface methodology (RSM), the simultaneous effects of corn starch, egg white and moisture content in the surimi from silver carp based on hardness, gel strength, shear force, pH, and water activity; as well as the cryoprotective effects of sucrose and sorbitol on salt-soluble proteins (SSP) of the surimi. The mathematical model revealed no significant interactive effect among the first three ingredients nor between sucrose and sorbitol. Corn starch and/or egg white exerted a positive impact on gel properties, while moisture content contributed to a more rapid decreasing rate on gel properties than the increasing rate attributed to corn starch and/or egg white. The highest gel strength was reached when starch (3-5%) and egg white (6-8%) were added together. The highest hardness and shear force values would be attained with maximum addition of starch (6%) and egg white (8%). No differences were found in pH, water activity and gender effect regardless of treatment. Salt-soluble protein (SSP) in all treatments decreased distinctly during the first week of frozen storage. Although the highest SSP content was reached when sucrose (4- 5%) and sorbitol (5-6%) were added together, the addition of 4% sucrose and 4% sorbitol still maintain fairly high levels of SSP content during frozen storage.Item "It is a hell for one" : "psychotic depression" and suicide in David Foster Wallace's Infinite jest(University of Missouri--Columbia, 2010) Thomas, Eric Austin, 1984-; Cohen, Samuel S.[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This Master's thesis analyzes one particular character in David Foster Wallace's novel, Infinite Jest (1996): Kate Gompert, a suicidal marijuana addict afflicted with "psychotic depression." I argue that Gompert's character serves as a kind of mouth-piece for Wallace, that is, a kind of platform from which Wallace attempts to better understand and explain the painful and indescribable depression that fermented within his own Self. While the novel consistently posits a neuroscientific, material explanation for such an illness - i.e. the primacy of the body and the tyrannical oppression of brain chemistry - there also exists a spiritual philosophical undercurrent that posits a construction of Self defined by experience and choice. My thesis is organized as follows: first, I provide a brief summary of Infinite jest, before examining the cyclical form of the novel and its manipulation of time and space. Finally, I unpack the crux of my argument - that is, Wallace's understanding of psychotic depression and "the feeling" that drives one to suicide, which remains most thoroughly elucidated in the character of Kate Gompert.Item Life cycle energy consumption cost model for manufacturing equipment(University of Missouri--Columbia, 2010) Ding, Shuai, 1985-; Wu, B. (Bin), 1957-[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Energy consumption is in the closest relationship with human life, manufacturing production and any other life activities any time. Current literatures concerning on energy consumption cost of industrial equipment mostly focus on case study on specific equipment such as boilers, gas station and etc. Among these papers that consider life cycle cost are mainly confined on operation phase which is including purchasing stage, installing stage, running stage not extend to the upriver and downriver stages during their whole life. However as we know the process of manufacturing these equipment and recycling them after usage also require energy consumption cost. This study develops a life cycle energy consumption cost model for general manufacturing equipment which is mostly used in industrial area. This model could calculate an expended life cycle energy consumption cost involving manufacturing energy consumption cost and running usage energy consumption cost. After that, an Excel calculator is given and four independent variables are analyzed for the effect to this model. In the end this study takes electric motor as example to give detailed calculation of life cycle energy consumption cost and also comparison of new model with current one and MotorMaster are presented to tell the necessity of this study.Item A mouse model of embolic focal ischemic stroke for investigation of anti-thrombotic therapies(University of Missouri--Columbia, 2010) Hu, Rong, 1980-; Gu, Zezong[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Stroke is the third leading cause of death in the United States and the major cause of adult disability. Ischemic stroke accounts for about 87 percent of all cases, and is a condition in which there is insufficient blood flow and poor oxygen supply to the brain to meet metabolic demand, thus causing complex pathophysiology and damage to neurons and glial cells. Release of excitatory neurotransmitters such as glutamate and activation of ionotropic glutamate receptors such as that mediated by N-methyl-D-aspartic acid (NMDA) contribute to influx of calcium and stimulation of a train of events leading to mitochondrial dysfunction and neuronal apoptosis. Ischemia also triggers activation of matrix metalloproteinases (MMPs), known to play a role in degradation of extracellular matrix and disruption of blood brain barrier (BBB) and induction of neuronal cell death. Even though there are several models to mimic the effects of ischemic stroke, the embolic focal cerebral ischemic model is unique and one representing the most relevant physiological changes of ischemic stroke in human. Therefore, this embolic ischemic model may be used to identify the ischemia/stroke-induced brain damage due to lack of oxygen supply and other physiological stress, and studies to investigate potential drugs or agents for therapeutic purposes.Item An integrated approach for characterization of properties and mesostructure for FDM Ultem 9085(University of Missouri--Columbia, 2010) Cardona, Joseph A., 1986-; El-Gizawy, A. Sherif (Ahmed Sherif), 1945-[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The Fused Deposition Modeling (FDM) process is a layered prototyping technique used to build prototypes out of thermoplastic materials. It is currently only used for Rapid Prototyping. In order to use this technology for Rapid Manufacturing, Polyetherimide (Ultem 9085) was created. This material is beneficial because it has superior mechanical and physical properties when compared with the commonly used thermoplastics in the FDM process. Ultem 9085 is particularly useful for the aerospace industry due to its high strength-to-weight ratio and its FST (flame, smoke, and toxicity) rating. This thesis presents an integrated analytical and numerical approach for characterization of the Effective Composite Mechanical Properties and mesostructure of the FDM processed Ultem 9085. The developed approach uses Finite Element Analysis together with a numerical model for generation of the material mesostructure. It provides prediction of the effective composite transversely isotropic material properties and voids present in the FDM Ultem 9085 structures. The developed approach was verified experimentally. The experimental results agree well with the analytical ones.