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Mapping and Characterization of Phytophthora sojae and Soybean Mosaic Virus Resistance in Soybean
(Virginia Tech, 2009-04-27)
Phytophthora sojae, the causal organism of stem and root rot, and <i>Soybean mosaic virus</i> (SMV) cause two of the most highly destructive diseases of soybean (<i>Glycine max</i> L. Merr). <i>P. sojae</i> can be managed ...
Developing and Testing a Combustor Simulator For Investigating High Pressure Turbine Aerodynamics and Heat Transfer
(Virginia Tech, 2006-07-20)
Within a gas turbine engine, the turbine nozzle guide vanes are subjected to very harsh conditions from the highly turbulent and hot gases exiting the combustor. The temperature and pressure fields exiting combustors are ...
The Effects of Trained Facilitation of Learning-Oriented Feedback on Learner Engagement, Performance, Self-Efficacy, and Enjoyment
(Virginia Tech, 2003-08-29)
The level of learner engagement, performance, self-efficacy, and enjoyment on a knot-tying task by college students who received positive verbal and non-verbal learning-oriented feedback by trained facilitators was examined. ...
Theoretical and experimental studies of energy transfer dynamics in collisions of atomic and molecular species with model organic surfaces
(Virginia Tech, 2009-04-01)
A full understanding of chemical reaction dynamics at the gas/organic-surface interface requires knowledge of energy-transfer processes that happen during the initial gas/surface collision. We have examined the influence ...
Growth Factor and Extracellular Matrix Regulation of Heifer Mammary Development
(Virginia Tech, 2002-08-02)
The overall objective of this project was to investigate the role of locally derived growth factors and extracellular matrix proteins in regulating prepubertal heifer mammary development. In the first experiment, short-term ...
Essays on Rural-Urban Migration in China
(Virginia Tech, 2006-05-10)
Since the late 1980â s, China has experienced the worldâ s largest peacetime out-migration of its rural labor force to urban areas. The temporary nature of the labor migration complicates the control on this mobile ...
Identification and Characterization of Genes Involved in Regulation of Ascorbate Metabolic Pathway(s) in Arabidopsis thaliana
(Virginia Tech, 2007-02-01)
Vitamin C (ascorbic acid, AsA), an important primary metabolite of plants, functions as an antioxidant, an enzyme cofactor, and a cell-signaling modulator in a wide array of crucial physiological processes including ...
Statistical Analysis of Gene Expression Profile: Transcription Network Inference and Sample Classification
(Virginia Tech, 2004-04-14)
The copious information generated from transcriptomes gives us an opportunity to learn biological processes as integrated systems; however, due to numerous sources of variation, high dimensions of data structure, various ...
An Examination of Headset, Hearing Sensitivity, Flight Workload, and Communication Signal Quality on Black Hawk Helicopter Simulator Pilot Performance
(Virginia Tech, 2009-07-03)
Among the many occupational hazards to which Army rotary-wing aviators are exposed is intense noise generated from the aircraft. The potential for permanent hearing loss and difficulty communicating in helicopter noise ...
Three Essays in Development Economics: Savings Behavior and Risk; Health and Public Investments; and Sequential Technology Adoption
(Virginia Tech, 2001-07-23)
This dissertation explores household risk and savings behavior in Zimbabwe, and agricultural technology adoption, and the impact of public investments on the economy and community health in Ethiopia. The first paper analyzes ...