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Event-history mediator models of college attrition: risk goups and risk factors
(University of Missouri--Columbia, 2007)
estimated the effects of a number of factors on college attrition, in 3,290 FGEN and non-FGEN students over four years, using event-history analysis. Results showed that, FGEN students were indeed more likely to leave college than their non-FGEN peers...
Point processes on the complex plane with applications
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] A point process is a random collection of points from a certain space, and point process models are widely used in areas dealing with spatial data. However, studies of point...
The coefficient of digestion as influenced by the plane of nutrition of the animal
(University of Missouri--Columbia, 1914)
A review of the literature reporting digestion experiments shows that but few investigators have studied the problem of digestion from the point of view of the influence of the condition of the animal on its ability to ...
Modeling the impact of polystyrene microparticles on toxicity of phenol to Artemia
(University of Missouri--Columbia, 2011)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The increasing use and availability of micro and nanoparticles for use in science, technology and daily consumer products has led to unique challenges related to understanding...
Comparing the diversity, geographic distribution, and intraspecific variation of subterranean termites (Reticulitermes: Isoptera: Rhinotermitidae) occuring in woodlands and urban environments of Missouri using morphology and 16s mtDNA
(University of Missouri--Columbia, 2007)
. In urban environments they feed upon dead wood, and therefore infest and destroy man-made wooden structures. Missouri is considered to have a moderate risk for termite infestations when compared with the states of the southeast part of the country. Despite...
Chemical modifications to produce soy-based polyols
(University of Missouri--Columbia, 2009)
at temperatures near 150 °C using p-toluenesulfonic acid to promote the reaction. In the first part of the study, different temperatures and reaction times were evaluated to optimize the reaction. In the second part of the study, different mole ratios of ethylene...
Influence of characters of ear and kernel upon the germination of maize
(University of Missouri--Columbia, 1912)
of the ear and kernel which have a marked influence upon the yield. This is so universal that we have score cards which set forth the ideal type of ear and give certain values to the different characters. In general, the score cards are alike and all agree...
Photoacoustic detection of circulating tumor cells
(University of Missouri--Columbia, 2013)
based on the change in refractive index was developed to detect individual melanoma cells. The sensitivity of the optical based detector was high and has the resolution to determine the presence of extremely low number of metastatic and cultured cells (2...
Corridors and deer-vehicle collisions along Missouri interstate highways
(University of Missouri--Columbia, 2022)
A total of 3,639 deer-vehicle collisions (DVCs) were reported on Missouri roadways in 2020, resulting in 348 injuries and 5 deaths. Missouri is ranked 15th nationwide for this type of accident. Of the DVCs, 490 occurred along 1,200 miles of urban...
Materials study supporting thermochemical hydrogen cycle sulfuric acid decomposer design
(University of Missouri--Columbia, 2007)
A laboratory scale sulfuric acid decomposer simulator was constructed at the Nuclear Science and Engineering Institute at the University of Missouri- Columbia. The simulator was capable of producing the temperatures and corrosive environments...
Climatology of atmospheric blocking 1978-2008 : global and hemispheric breakdown, as well as impacts of temperature, and global climate cycles
(University of Missouri--Columbia, 2010)
by the increase in the number of observations from the area around Siberia. The connection to the PDO, which is still a relatively new phenomena in meteorology need additional study. The connection between blocking and the PDO can have wide impacts in forecasting....
Highway impacts on Ozark incomes and employment
(University of Missouri--Columbia, 1970)
Introduction and problem review: Confronted by depressed economic and social conditions of extensive regions within the United States, the Federal Government through its various agencies is waging "war on poverty." Many ...
An ecological systems approach to reduce children's encounters with obscenity on the internet
(University of Missouri--Columbia, 2007)
This dissertation explores how to reduce children's encounters with obscenity on the Internet. Congress has been trying to shield children from encountering online obscenity and some of Congress' attempts failed because ...
Pre-harvest water quality of ephemeral streams in Missouri Ozark forests
(University of Missouri--Columbia, 2006)
baseline values were established: pH was 8.3, electrical conductivity was 200 us/cm, TSS was 0.5 g/L and TVSS was 0.2 g/L, Ca was 13 mg/L and Mg was 10 mg/L, K was 10 mg/L, TP was 1.3 mg/L and SRP was 1.1 mg/L, total nitrogen was 5.8 mg/L and nitrate...
Igneous intrusions and thermal evolution in the Raton Basin, CO-NM: contact metamorphism and coal-bed methane generation
(University of Missouri--Columbia, 2006)
isotopes and petrography. Reflectance values at sill contacts are elevated over a wider zone than for dikes. Coal [delta]¹³C values increase by 1% approaching the contacts of dikes and decrease by approximately 1.5% at sills due to the addition of ¹²C...
Cytogenetic analysis of a knobbed chromosome 9 in maize
(University of Missouri--Columbia, 1971)
* knob did not influence the zig-zag effect on recombination induced by the odd-even number of B-chromosomes. Previous preferential segregation studies have indicated that it is the genes linked to the larger of the twoknobs of chromosome 9 bivalents...
Investigations of Mississippi valley-type mineralizing fluids via analytical geochemistry, numerical modeling, and experimental geochemistry
(University of Missouri--Columbia, 2021)
was performed at temperatures between 125 and 200 degrees C, 10 MPa pressure, and aqueous Zn concentrations from about 10 to 1000 ppm for periods of time ranging from 10 to 80 days. The D values calculated from these experiments have applications in hydrothermal...
Statistical and simulation methods for evaluating stationary and mobile work zone impacts
(University of Missouri--Columbia, 2018)
when traffic volumes are under 1400 veh/hr/ln, and preferably under 1000 veh/hr/ln, due to the drastic increase in the number of conflicts. In addition, three data driven models were developed to predict traffic speed inside a MWZ: a linear regression...
Changes in stable carbon isotopes of methane along a salinity gradient in a hypersaline microbial mat system
(University of Missouri--Columbia, 2007)
located within the salterns of the Exportadora de Sal de C. V., Baja California Sur, Mexico. Samples were analyzed for the stable carbon isotopes of the particulate organic matter (POM), dissolved inorganic carbon (DIC), and dissolved methane within...
Effects of pressure and temperature on the yield strength of tantalum and rhenium
(2013)
The effects of pressure and temperature on the yield strength of tantalum and
the effects of pressure on the yield strength of rhenium were investigated using ruby
fluorescence. A new Raman system with a motorized stage ...