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Growth of pasture plants (2012)
(University of Missouri. Extension Division, 2012)
Three essays on phosphorus runoff and water quality
(University of Missouri--Columbia, 2019)
efforts to limit both residential and agricultural nonpoint source pollution. The results could be helpful policy makers to target specific regions to initiate environmental policies and extension efforts for designing educational programs to increase...
Three essays on higher education outcomes
(University of Missouri--Columbia, 2022)
from the 1990 and 2000 Decennial Censuses and the 2008-2012 American Community Survey, I utilize a staggered difference-in-difference methodology that exploits the exogenous variation in the timing of program adoption to produce causal estimates...
The secret lives of African forest elephants: using genetics, networks, and telemetry to understand sociality
(University of Missouri--Columbia, 2012)
extensive networks of individuals suggesting fission-fusion sociality. Also, adult females at distances of five kilometers or less were more closely related to each other than expected from chance. Known adult females and their associates were tracked...
Inferring the environmental conditions present during early tetrapod terrestrialization from skeletal [delta]18O values
(University of Missouri--Columbia, 2023)
To test the extent of marine influence in the Joggins Formation, Nova Scotia, Canada and the possible habitat segregation and the net moisture balance at the Red Hill roadcut exposure of the Duncannon Member of the Catskill ...
Improvement of co-digesting swine manure and waste kitchen oil
(University of Missouri--Columbia, 2021)
Anaerobic co-digestion of swine manure (SM) and waste kitchen oil (WKO) was conducted to evaluate the effect of substrate loading rates on biogas production efficiency. Biogas yields of M4O2 (4 g-VSSM L-1 d-1 + 2 g-VSWKO L-1 d-1) and M2O1 were 917...
A geochemical, taxonomic, and phylogenetic investigation of Paleozoic arthropods : case studies on the Cambrian spice event and the Silurian Waukesha Lagerstatte
(University of Missouri--Columbia, 2020)
This thesis details two stand-alone projects: Chapters 1 and 2 comprise a quantitative investigation of controls on the [delta]13C record of the Steptoean Positive Carbon Isotope Excursion (SPICE); Chapter 3 describes a ...
Hospital acquired pressure injury in adult orthopedic spine surgery patients: risk factors and risk assessment tools
(University of Missouri--Columbia, 2022)
Approximately 25 percent of all hospital acquired pressure injuries (HAPI) begin in the perioperative area. The study purposes were to identify risk factors in adult surgical patients undergoing orthopedic spine surgery ...
Motivation for smoking and smoking cessation : a self-determination theory investigation
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Nicotine dependence is conceptualized as a disorder of motivation. Initial drug use is goal-directed, but with the development of dependence it becomes ...
Early detection of health changes in the elderly using in-home multi-sensor data streams
(University of Missouri--Columbia, 2022)
The rapid aging of the population worldwide requires increased attention from health care providers and the entire society. For the elderly to live independently, many health issues related to old age, such as frailty and ...
Herbicide resistant weeds in Missouri : sources and solutions
(University of Missouri--Columbia, 2019)
Herbicide resistant weeds continue to invade new territories each year. Two studies were designed to identify both the spread and the current status of herbicide resistant weeds in Missouri. In 2016 and 2017, 98 separate ...
Two essays on food manufacturer resilience: regional factors and workforce challenges
(University of Missouri--Columbia, 2022)
Researchers and policymakers worldwide have increasingly viewed resilient food systems as important. In the wake of the COVID-19 pandemic, there has been particular emphasis on food manufacturer resilience. This thesis ...
Agroforestry buffer, biomass crop, and grain crop effects on soil quality and soil water use
(University of Missouri--Columbia, 2020)
in northeastern Missouri, USA. Vegetation management treatments were row crop (RC), grass buffer (GB), agroforestry buffer (AB), grass waterways (GWW), and biomass/biofuel crop (BC), which were established in 1991, 1997, 1997, 1997, and 2012, respectively...
Genetic diversity and distribution of the ringed salamander (ambystoma annulatum) across multiple spatial scales
(University of Missouri--Columbia, 2018)
that correspond to watershed boundaries. Within each cluster, I found evidence for decreased gene flow in recent generations, possibly due to the extensive timber harvest and land conversion of the CIH post European settlement. Over smaller spatial scales, I found...
The impact of international institutions on foreign aid delivery tactics
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Do international institutions influence state behavior? Do the events that take place within international organizations affect foreign policy behavior ...
Coupling, membrane conductance, and ion channel mRNA profiles in the establishment and maintenance of network activity in the crustacean cardiac ganglion
(University of Missouri--Columbia, 2021)
synchronously due to simultaneous stimulation and electrical coupling through gap junctions. Depolarizing pharmacological perturbations have been shown to result in hyperexcitability (Ransdell et al., 2012a) and disrupt synchrony between LCs (Lane et al., 2016...
Safety modeling for two certain urban intersection types, HSM calibration, and crash severity distribution
(University of Missouri--Columbia, 2017)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] According to several years' official crash data, a significant proportion of crashes happened at roadway intersections in Missouri. Of those intersection ...
Role of agricultural cooperatives in poverty reduction in Nepal : an empirical analysis
(University of Missouri--Columbia, 2021)
Cooperatives refer to producer-owned and controlled organizations that improve farmers' livelihoods by correcting market failure. Policy makers consider cooperatives as an appropriate development approach for poverty ...
Uncovering limitations and opportunities in nitrogen fixation in soybean using genetic mapping and transgenic approaches
(University of Missouri--Columbia, 2023)
[EMBARGOED UNTIL 8/1/2024] Soybean [Glycine max (L.) Merr.] is one of the most valuable crops world-wide and is the most cultivated legume. Symbiotic N fixation (SNF) evolved as it confers a competitive advantage to soybean ...
Integrating cover crops into crop rotations in upstate Missouri
(University of Missouri--Columbia, 2018)
"There is an increasing emphasis on management strategies such as reduced tillage, use of cover crops, and implementation of conservation practices (i.e. terraces, no-till, and cropping systems) in Missouri cropping systems. ...