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Fuel-optimal Earth-Mars trajectories using low-thrust exhaust-modulated plasma propulsion
(Texas A&M University, 1999)
The objective of this thesis is the determination of fuel-optimal interplanetary trajectories of a spacecraft using a variable specific impulse thruster. The spacecraft departs from an Earth parking orbit and is required ...
Paleoseismology study of the Cache River Valley, southern Illinois, and New Madrid seismic zone, southeast Missouri and northeast Kansas
(Texas A&M University, 1999)
Our understanding of earthquake hazard in the mid-continent region of the United States has benefited greatly from paleoseismology studies. Numerous earthquake-induced features have been documented throughout the region, ...
Measuring the accessibility and equity of public parks: a case study using GIS
(Texas A&M University, 1999)
The concepts of accessibility and equity are useful means of measuring the extent and fairness of service provided by the distribution of public facilities such as urban packs. While numerous studies have been conducted ...
Sensory and chemical characteristics of ground goat meat products
(Texas A&M University, 1999)
Ground goat meat and beef with 15% target fat content were produced using primal cuts of goat meat and beef chuck roasts obtained at 24 hours and ~7 days postmortem, respectively, and analyzed for total fat, moistures total ...
Low temperature MFM imaging of Fe₂₊xV₂₊xAl intermetallics
(Texas A&M University, 1999)
A low temperature magnetic force microscope (MFM) system was set up by adapting a commercial atomic force microscope (AFM) from Park Scientific Instruments (PSI) for low temperature MFM use. Magnetic cantilevers were ...
The linkage between investments in extension and farmers' adoption of soil and water conservation practices in southern Honduras
(Texas A&M University, 1999)
Soil erosion from cultivated steeplands is a major environmental problem in Central America. Considerable funding has been and is being invested in the implementation of soil conservation projects to address the on-farm ...
The nitrogen specific uptake of three strains of Prochlorococcus
(Texas A&M University, 1999)
Prochlorococcus contributes 25-60% of the chlorophyll a biomass to the tropical and subtropical oceans. Its importance to community structure in these areas has been demonstrated, but its nutrient requirements and nitrogen ...
Dynamic modeling and learning user profile in personalized news agent
(Texas A&M University, 1999)
Finding relevant information effectively on the Internet is a challenging task. Although the information is widely available, exploring Web sites and finding information relevant to a user's interest can be a time-consuming ...
Lithology and cyclicity in the deposition of the Middle Ordovician McKee Sand member of the Tulip Creek Formation (Simpson Group) in the Tobosa Basin of Southeast New Mexico and West Texas
(Texas A&M University, 1999)
The lower Paleozoic rocks deposited on the inner craton of North America are characterized by thick sections of carbonate rocks separated by thin units of sandstones and shales. The origins of these sandstones are poorly ...
The effects of alcohol consumption after menopause on bone regulating hormones
(Texas A&M University, 1999)
The goal of this project was to determine if the alcohol-associated increase in osteopenia as observed in ovariectomized rats, which simulated human females after menopause, was due to the elect of alcohol on hormones that ...