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Bat avoidance behavior in Neoconocephalus retusus (Orthoptera: Tettigoniidae) [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
Nocturnally flying insects avoid predation by insectivorous bats by monitoring for echolocation calls and, when detected, using evasive behaviors. We examined the responses of Neoconocephalus retusus to models of bat calls ...
Identification of QTL associated with root architecture under well-watered, and water-stressed conditions in Zea mays [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
Drought alone contributes 17% to the average annual yield loss in maize (Zea mays). It is the single most significant environmental obstacle to improving grain yield. Many physiological traits have been linked to drought ...
Expression patterns of oligopeptide transporters in arabidopsis thaliana [abstract]
(2004)
Peptide transport is a universally observed cellular mechanism employed by both prokaryotes and eukaryotes to transport peptides (2-6 residues) across cellular membranes in an energy-dependent manner. These peptides, upon ...
Genetic mapping of a chromatin-level modifier [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
In many organisms, gene activity can be regulated by packaging of the DNA into chromatin. In general, loose chromatin structure is associated with transcriptionally active genes, while inactive genes have tighter chromatin ...
Enzymatic analysis of matrix metalloproteinases using heterotrimeric and homotrimeric type I collagen as a substrate [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
The goals of this study are to determine if specific MMPs differentially degrade heterotrimeric and homotrimeric type I collagen, and the role of MMPs in the oim collagen glomerulopathy. Type I collagen is typically ...
The effects of particle size distribution on density of activated carbon [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2006)
Methane is one of many alternative fuels that have been explored over the past few years in an effort to reduce our dependency on fossil fuels. Currently, methane can be condensed and used as a fuel for most large vehicles. ...
Functional Analysis of Nematode Secreted CLE Peptides [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2006)
Cyst nematodes (Heterodera spp.) are small roundworms that parasitize plant roots and cause more than $1 billion in U.S. yield losses each year. These nematodes secrete proteins through a stylet into root tissues to form ...
Near-optimal launch guidance using energy-angular momentum relationship [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
The nonlinear dynamic equations for launch vehicles make the optimal control solution difficult to obtain. These solutions have multiple parameters (i.e. Lagrange multipliers) for which the proper initial values must be ...
A study of the quality and value improvements of Show-Me-Select heifers [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
Missouri's largest source of agriculture revenue, the forage-based beef cattle industry, could become a bigger player in the state's total agriculture revenue and on-farm income with some industry modifications. As a result, ...
Identifying out of context smiling in children: Are they really happy? [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
We examined children's expressions characteristic of smiles during pleasurable (in context) and distressing (out of context) situations. We hypothesize that smiles during distressing contexts were not accompanied by pleasure. ...
Going underground: Benefits of phototropism in Arabidopsis depend on the soil environment [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
Phototropins are blue-light photoreceptors that control shoot and root phototropism in
Arabidopsis thaliana. We investigated whether the soil environment influences the benefit of
phototropism. We hypothesized that root ...
The role of language in the expression of shyness [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research., 2004)
Abstract of a presentation presented at the Undergraduate Research Conference 2004. Presentation reported on a study designed to analyze the relationship between verbal and non-verbal communication and shyness in twenty-four ...
Speech disorders following brain injury: Effects of speaking rate on nasal resonance [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2005)
Brain injuries can result in a variety of impairments including speech disorders. One such disorder is dysarthria, which results in impaired control of the muscles used for speech. A common characteristic of dysarthria is ...
Neurohormonal responses to human-animal and human-robotic dog interaction [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2005)
Medicine BACKGROUND: Research shows that interacting with companion animals reduces humans' blood pressure, stress, and improves mood, believed to be rooted in neurohormonal changes. The extent to which responses occur ...
The impact of methyl mercury on the distribution of selenium in various tissues [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2006)
There is evidence that a regimen of dietary selenium provides protection against the toxic biological effects of methyl mercury. Animal studies suggest that a potential mechanism is that selenium causes the redistribution ...
The synthesis of adenine in interstellar space [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2004)
Found in both DNA and RNA, adenine is one of the most important biological molecules. As critical as it is, though, adenine is simply a pentamer of hydrogen cyanide. It could possibly be synthesized in space from naturally ...
Localized adherence and microcolony formation by nontypeable Haemophilus influenzae [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2006)
Haemophilus influenzae is a gram-negative bacterium that resides in the upper respiratory tract of most humans. Nontypeable strains of H. influenzae (NTHi) cause many upper respiratory infections, including otitis media, ...
Designing a test to determine physical changes in explanted hernia meshes [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2006)
Abdominal hernias are painful conditions that affect about 4.5 million people in the USA alone. Surgeons suture a polymer mesh material to the peritoneal wall to provide support for the peritoneal wall as it heals. The ...
Non medicinal treatments for breast cancer prevention [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2005)
Black cohosh is an herbal supplement that can alleviate the symptoms of estrogen related ailments. How black cohosh works is not yet known. Contradicting studies suggest that black cohosh has an estrogenic effect; where ...
A spatial and temporal comparison of prehistoric pottery in Dunlkin County, Missouri [abstract]
(University of Missouri--Columbia. Office of Undergraduate Research, 2005)
The Mississippi River Valley, specifically southeast Missouri, contains one of the richest archaeological records in the United States. In the past, there have been many well-noted studies conducted on the archaeological ...