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Adjustment Of Families With Children Adopted From Eastern Europe, Maria Kuznetsova
Adjustment Of Families With Children Adopted From Eastern Europe, Maria Kuznetsova
Theses and Dissertations
The purpose of this study was to examine the adjustment of older children and adolescents adopted from Eastern Europe and the impact of their preadoption history and family’s functioning on their adjustment. This is a follow-up study of families first surveyed in 2005 with an addition of new families. One hundred and forty-five families reporting on 194 adopted children (9 to 19 years; 104 girls) participated in this study at Time 2. The project was conducted as an internet-based survey. Parents and adopted children reported on children’s emotional, behavioral and social problems (CBCL and YSR), as well as family environment …
Minority Disproportionality In New Jersey, Shannon Kemp
Minority Disproportionality In New Jersey, Shannon Kemp
Theses and Dissertations
This study sought to examine whether New Jersey districts exhibited minority disproportionality, or the overrepresentation of minority students in special education eligibility categories and placements. A dataset with a random sample of 200 school districts was compiled with special education data from the New Jersey Department of Education. Through analyses of four ethnicities, White, Black, Hispanic, and Asian, it was discovered that Black and Hispanic students were significantly more likely to be placed in special education as compared to their peers. Asian students were significantly less likely to be represented in special education in comparison to their non-Asian counterparts. Black …
Tailoring The Spectral Transmission Of Optofluidic Waveguides, Brian S. Phillips
Tailoring The Spectral Transmission Of Optofluidic Waveguides, Brian S. Phillips
Theses and Dissertations
Optofluidics is a relatively new and exciting field that includes the integration of optical waveguides into microfluidic platforms. The purpose of this field of study is to miniaturize previously developed optical systems used for biological and chemical analysis with the end goal of placing bench-top optics into microscopic packages. Mundane optical alignment and sample manipulation procedures would then be intrinsic to the platform and allow measurements to be completed quickly and with reduced human interaction. Biosensors based on AntiResonant Reflecting Optical Waveguides (ARROWs) consist of hollow-core waveguides used for fluid sample manipulation and analysis, as well as solid-core waveguides used …
The Formation And Stability Of Radical-Molecule And Radical-Radical Complexes And Their Importance In Atmospheric Processes, Jared M. Clark
The Formation And Stability Of Radical-Molecule And Radical-Radical Complexes And Their Importance In Atmospheric Processes, Jared M. Clark
Theses and Dissertations
This research explores the role that radical-molecule complexes play in the chemistry of Earth's atmosphere. The formation of such complexes can have direct and pronounced effects on the reaction and product outcome of atmospheric chemical reactions. Some attention is also given to the formation of radial-radical pre-reactive complexes in the HO + ClO system. Peroxy radicals (RO2) can form stable complexes with polar compounds such as H2O, NH3, and CH3OH. For the simplest RO2 radical, HO2, complex formation (e.g., HO2-H2O, HO2-NH3, and HO2-722;CH3OH) gives rise to a significant increase in the HO2 self-reaction rate constant. Although this phenomenon has been …
Association Between T Cells-Related Gene Expression And Fibrosis Progression In Hcv Recurrence Disease., Alexander Philip
Association Between T Cells-Related Gene Expression And Fibrosis Progression In Hcv Recurrence Disease., Alexander Philip
Theses and Dissertations
Hepatitis C virus (HCV) is the major cause of chronic hepatitis worldwide and a leading cause for liver transplant. Unfortunately, graft HCV infection is a universal phenomenon despite of pre-transplant prophylactic strategies. Acute HCV infection and innate immune responses elicit an inflammatory scenario that triggers the recruitment of adaptive immune response cells. Of those chronically infected, 30% experience accelerated fibrosis with concomitant cirrhosis development within 5 years post-LT and require re-transplant. With many patients responding unfavorably to antivirals and ineffective vaccines, much attention is now placed on T cell immunity in controlling HCV infection. This study represents a retrospective analysis …
A Pre And Post Exercise Comparison Of Three Assessment Tools Commonly Employed To Assess Vascular Function, Lorena Salom
A Pre And Post Exercise Comparison Of Three Assessment Tools Commonly Employed To Assess Vascular Function, Lorena Salom
Theses and Dissertations
Background: Endothelial dysfunction (ED) is one of the earliest subclinical indicators of impaired cardiovascular health and several non-invasive tools have been developed to evaluate vascular function, including strain gauge plethysmography (SGP), brachial artery flow-mediated dilation (FMD) via ultrasound, and peripheral artery tonometry (PAT). While these tools have extensively been studied during a resting condition, the responses following acute exercise are not as well characterized. Purpose: The purpose of this study was to compare the pre- and post-exercise vascular function values obtained with SGP, FMD, and PAT. Relationships among the primary outcome variables obtained with each assessment tool were also evaluated. …
Managing The Healthcare Needs Of Adolescents With Autism Spectrum Disorder: The Parents' Experience, Julie Strunk
Managing The Healthcare Needs Of Adolescents With Autism Spectrum Disorder: The Parents' Experience, Julie Strunk
Theses and Dissertations
The purpose of this phenomenological study was to describe the experiences of parents who manage the health needs of an adolescent with Autism Spectrum Disorder (ASD). Qualitative interviews were conducted with parents from 10 families of adolescents with ASD residing in Virginia. Data were analyzed using Clark Moustakas’ method of analysis of data in which the phenomenologist asks the following questions: What are the individual’s experiences, and in what context did they experience them? This study maximized credibility by using three strategies: prolonged engagement, peer debriefing, and member checking. “Parents needing help” emerged as the essence of the parents’ experiences. …
Molecular Pathways Involved In Calcineurin Inhibitor Nephrotoxicity In Kidney Allograft Transplants, Huong Nguyen
Molecular Pathways Involved In Calcineurin Inhibitor Nephrotoxicity In Kidney Allograft Transplants, Huong Nguyen
Theses and Dissertations
ABSTRACT MOLECULAR MECHANISMS AND GENE SIGNATURES INVOVLED IN CALCINEURIN INHIBITOR NEPHROTOXICITY IN KIDNEY ALLOGRAFT By Huong Le Diem Nguyen, M.S. A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Physiology at Virginia Commonwealth University. Virginia Commonwealth University, 2011. Major Director: Valeria Mas, Ph.D. Associate Professor, Department of Surgery and Pathology Director of Molecular Transplant Research Laboratory, Division of Transplant Calcineurin inhibitors (CNI), cyclosporin A and tacrolimus, are potent immunosuppressive agents but induce toxicities causing damages and graft dysfunction, and have been suggested to contribute to late-term loss of graft in kidney transplant …
Mechanisms Of Prenatal High-Salt "Fetal Programming" Resulting In Stress Hyperresponsiveness In The Adult Female Offspring In The Sprague Dawley Rat., Clinton L. Johnson
Mechanisms Of Prenatal High-Salt "Fetal Programming" Resulting In Stress Hyperresponsiveness In The Adult Female Offspring In The Sprague Dawley Rat., Clinton L. Johnson
Theses and Dissertations
Female offspring of Sprague-Dawley rats fed a high-salt diet (HS) during pregnancy show an enhancement of mean arterial pressure (MAP) and heart rate (HR) response to acute stress in adulthood compared to offspring whose mothers were fed a normal-salt diet (NS) [1]. In the present study, we first examined the expression of soluble epoxide hydrolase (SEH) protein in brain tissue. Whole brains were collected and SEH gene (EPHX2) mRNA and SEH protein expression were analyzed using RT-PCR and Western blot, respectively. mRNA levels were relatively decreased in high-salt rats (1.0 ± 0.32 NS vs 0.39 ± 0.07 HS, n=6). However, …
Characterizing The Distribution Of Planktonic Fecal Bacteria In The James River, Richmond, Virginia, John Furry
Characterizing The Distribution Of Planktonic Fecal Bacteria In The James River, Richmond, Virginia, John Furry
Theses and Dissertations
Surface waters containing fecal bacteria present significant public health risks. Understanding the sources of and factors affecting the distribution of fecal-indicating bacteria is necessary to predict potential illnesses more effectively. This thesis presents two studies on the distribution of fecal bacteria in the James River through Richmond, Virginia. Chapter 1 describes nearly 11 years of water quality, climate, and hydrologic data that occurred with changes in Escherichia coli concentrations, concluding that Richmond contributes significant quantities of fecal bacteria to the James River, and that the distribution of these bacteria varies seasonally. Chapter 2 details the development of Polymerase Chain Reaction …
Oxidative Transformation Of Antimicrobial Compounds By Ferric-Modified Montmorillonite, Chamindu Liyanapatirana
Oxidative Transformation Of Antimicrobial Compounds By Ferric-Modified Montmorillonite, Chamindu Liyanapatirana
Theses and Dissertations
The presence of wide spectrum antimicrobial agents triclosan (TCS) and triclocarban (TCC) in the environment has become a concern due to the adverse impact on the environment. Montmorillonite, a widely distributed clay mineral in the natural environment, has been used as an obstacle in landfills to avoid contamination of soil and water by contaminants in leachates due to its high surface area, cation exchange capacity, and abundance. The research reported here focuses on understanding the abiotic oxidative transformation of TCS and TCC by Fe(III)-modified montmorillonite. The overall objectives of this work were: 1) to investigate TCS and TCC oxidative transformation …
Biomechanical Comparison Of Three Methods For Internal Fixation Of Femoral Neck Fractures In Dogs, Stephen Cory Fisher
Biomechanical Comparison Of Three Methods For Internal Fixation Of Femoral Neck Fractures In Dogs, Stephen Cory Fisher
Theses and Dissertations
Research evaluating the surgical repair of femoral neck fractures in dogs is limited. This study evaluated the in vitro mechanical properties of canine femoral neck fractures stabilized with two medium Orthofix® Partially-threaded Kirschner Wires (Orthofix pins), a 2.7 mm cortical bone screw placed in lag fashion with anti-rotational Kirschner wire (K-wire), and three 1.1 mm divergent K-wires. This study compared the mean compressive pressure, compressive force and area of compression created by the insertion the Orthofix pins and a 2.7 mm cortical bone screw placed in lag fashion. Monotonic testing was used to quantify mechanical strength and pressure sensitive film …
A Three-Dimensional Heat And Mass Transport Model For A Tree Within A Forest, Jerrell Ray Ballard
A Three-Dimensional Heat And Mass Transport Model For A Tree Within A Forest, Jerrell Ray Ballard
Theses and Dissertations
A three-dimensional computational tool was developed that simulates the heat and mass transfer interaction in a soil-root-stem system (SRSS) for a tree in a seasonally varying deciduous forest. The development of the SRSS model involved the modification and coupling of existing heat and mass transport tools to reproduce the three-dimensional diurnal internal and external temperatures, internal fluid distribution, and heat flow in the soil, roots, and stems. The model also required the development of a parallel Monte-Carlo algorithm to simulate the solar and environmental radiation regime consisting of sky and forest radiative effects surrounding the tree. The SRSS was tested, …
Structure Property Relations And Finite Element Analysis Of Ram Horns: A Pathway To Energy Absorbent Bio-Inspired Designs, M W (Michael Wesley) Trim
Structure Property Relations And Finite Element Analysis Of Ram Horns: A Pathway To Energy Absorbent Bio-Inspired Designs, M W (Michael Wesley) Trim
Theses and Dissertations
A recently emerging engineering design approach entails studying the brilliant design solutions found in nature with an aim to develop design strategies that mimic the remarkable efficiency found in biological systems. This novel engineering approach is referred to as bio-inspired design. In this context, the present study quantifies the structure-property relations in bighorn sheep (Ovis canadensis) horn keratin, qualitatively characterizes the effects of a tapered spiral geometry (the same form as in a ram’s horn) on pressure wave and impulse mitigation, describes the stress attenuation capabilities and features of a ram’s head, and compares the structures and mechanical properties of …
Traumatic Brain Injury: Modeling And Simulation Of The Brain At Large Deformation, Raj Prabhu
Traumatic Brain Injury: Modeling And Simulation Of The Brain At Large Deformation, Raj Prabhu
Theses and Dissertations
The brain is a complex organ and its response to the mechanical loads at all strain rates has been nonlinear and inelastic in nature. Split-Hopkinson Pressure Bar (SHPB) high strain rate compressive tests conducted on porcine brain samples showed a strain rate dependent inelastic mechanical behavior. Finite Element (FE) modeling of the SHPB setup in ABAQUS/Explicit, using a specific constitutive model (MSU TP Ver. 1.1) for the brain, showed non-uniform stress state during tissue deformation. Song et al.’s assertion of using annular samples for negating inertial effects was also tested. FE simulation results showed that the use of cylindrical or …
Effectiveness Of Crop Reflectance Sensors On Detection Of Cotton (Gossypium Hirsutum L.) Growth And Nitrogen Status, Tyson Brant Raper
Effectiveness Of Crop Reflectance Sensors On Detection Of Cotton (Gossypium Hirsutum L.) Growth And Nitrogen Status, Tyson Brant Raper
Theses and Dissertations
Cotton (Gossypium hirsutum L.) reflectance has potential to drive variable rate N (VRN) applications, but more precise definitions of relationships between sensor-observed reflectance, plant height, and N status are necessary. The objectives of this study were to define effectiveness and relationships between three commercially available sensors, and examine relationships of wavelengths and indices obtained by a spectrometer to plant height and N status. Field trials were conducted during 2008-2010 growing seasons at Mississippi State, MS. Fertilizer N rates ranged from 0-135 kg N ha-1 to establish growth differences. Sensor effects were significant, but sensors monitoring Normalized Difference Vegetation Index (NDVI) …
Centrarchid Assemblages In Oxbow Lakes Of The Mississippi Alluvial Valley With Perspectives For Fisheries Management, Ted Joseph Alfermann
Centrarchid Assemblages In Oxbow Lakes Of The Mississippi Alluvial Valley With Perspectives For Fisheries Management, Ted Joseph Alfermann
Theses and Dissertations
Surrounding land-use and in-lake data were collected to determine environmental variables influential in structuring centrarchid assemblages in oxbow lakes of the Mississippi Alluvial Valley (MAV) and to suggest environmental manipulation strategies that may improve the fisheries of these systems. I sampled 53 oxbow lakes using boat electrofishing and land-use data were summarized using ArcView GIS. Non-metric Multidimensional Scaling separated centrarchids according to water quality tolerance. Centrarchid composition was related to land-use, water clarity, maximum depth, connectivity, primary productivity, and physicochemistry as determined by Canonical Analysis of Principal Coordinates. Canonical Correspondence Analysis rejected the null hypothesis of no relationship between land-use …
Characterization Of Tissue Mimicking Materials For Testing Of Microwave Medical Devices, Mary Virginia Dancsisin
Characterization Of Tissue Mimicking Materials For Testing Of Microwave Medical Devices, Mary Virginia Dancsisin
Theses and Dissertations
The driving force behind this thesis was the need for developing tissue mimicking materials that can mimic the dielectric properties of various biological soft tissues to aid in the development and testing of electromagnetic medical devices. Materials that can mimic the dielectric properties of human skin, adipose, muscle, malignant and healthy fibroglandular tissue, liver, pancreas, and kidney within the frequency range of 500 MHz to 20 GHz have been characterized and tested. The tissue mimicking materials are used to construct biological phantoms for studies that involve the investigation of wireless medical telemetry and a microwave breast cancer detection device.
Classes Of Reaction Diffusion Equations With Nonlinear Boundary Conditions, Jerome Goddard
Classes Of Reaction Diffusion Equations With Nonlinear Boundary Conditions, Jerome Goddard
Theses and Dissertations
We study positive solutions to classes of steady state reaction diffusion equations that arise naturally in applications. In particular, we study models arising from population dynamics and combustion theory. The main focus of this dissertation is the mathematical analysis of a challenging new class of problems when a certain nonlinear boundary condition is satisfied. In particular, we establish existence and multiplicity results by making use of the Quadrature method, the method of sub-super solutions, and degree theory. The results in this dissertation provide a significant contribution towards the analysis of elliptic boundary value problems with nonlinear boundary conditions.
Community Interactions And Water As Drivers Of Soil Microbial Communities, Madhavi Latha Kakumanu
Community Interactions And Water As Drivers Of Soil Microbial Communities, Madhavi Latha Kakumanu
Theses and Dissertations
Understanding the response of soil microbial communities to various environmental stresses is of current interest, because of their pivotal role in nutrient cycling, soil organic matter mineralization and influence on plant growth. Determining the affect of several biotic and abiotic factors on soil microbial communities is the overall objective of the study. The specific goals are to determine 1) the response of microbial communities to water deficit in soil and 2) how the presence of a rich biotic community determines the direction of microbial community development in cultures. Both goals are novel and unique contributions to understanding microbial ecology in …
Effects Of In-Situ Biosparging On Pentachlorophenol (Pcp) Degradation And Bacterial Communities In Pcp, Carrlet Elizabeth Stokes
Effects Of In-Situ Biosparging On Pentachlorophenol (Pcp) Degradation And Bacterial Communities In Pcp, Carrlet Elizabeth Stokes
Theses and Dissertations
This study examined the effect of in-situ biosparging on pentachlorophenol (PCP) degradation and bacterial communities in PCP contaminated groundwater. Bacteria were identified by sequencing the 16s rDNA fragment from DNA extracted from groundwater cultures and comparing those sequences to a database using a basic local alignment search tool, BLAST. The PCP-degraders Burkholderia cepacia and Flavobacterium (Sphingobium) chlorophenolicum were identified in multiple wells, as were the 4-chlorophenol degrader Herbaspirillum sp., and the common soil bacteria Pseudomonas sp., Aquaspirillum sp., and Rhodocista sp., among others. Numerous bacterial samples also appeared in the results as “uncultured”. Bacterial community changes were observed using terminal …
Development Of Computational Tools And Resources For Systems Biology Of Bacterial Pathogens, Ranjit Kumar
Development Of Computational Tools And Resources For Systems Biology Of Bacterial Pathogens, Ranjit Kumar
Theses and Dissertations
Bacterial pathogens are a major cause of diseases in human, agricultural plants and farm animals. Even after decades of research they remain a challenge to health care as they are known to rapidly evolve and develop resistance to the existing drugs. Systems biology is an emerging area of research where all of the components of the system, their interactions, and the dynamics can be studied in a comprehensive, quantitative, and integrative fashion to generate predictive models. When applied to bacterial pathogenesis, systems biology approaches will help identify potential novel molecular targets for drug discovery. A pre-requisite for conducting systems analysis …
A Study Of Structural Integrity Of Type A (I) Lantibiotics Via Chemical Modification And Mutagenesis, Shawanda Wilson-Stanford
A Study Of Structural Integrity Of Type A (I) Lantibiotics Via Chemical Modification And Mutagenesis, Shawanda Wilson-Stanford
Theses and Dissertations
Lantibiotics like mutacin 1140 are receiving a considerable amount of attention because of their broad spectrum of activity, high potency, low immunogenicity, and good structural stability. Mutacin 1140 is produced by Streptococcus mutans JH1140 and is a type A (I) lantibiotic. Lantibiotics are ribosomally synthesized bacteriocins that undergo post-translational modifications to form lanthionine or β-methyllanthionine rings as well as 2, 3-didehydroalanine (Dha), 2, 3-didehydrobutyrine (Dhb), and S-amino vinyl-D-cysteine (AviCys). Their mode of action is pore formation and/or abduction of lipid II from the site of new cell wall synthesis. In order to gain further knowledge of both the structural integrity …
Epigenetic Regulations In Cell Wall Degradation And Regeneration In Oryza Sativa, Feng Tan
Epigenetic Regulations In Cell Wall Degradation And Regeneration In Oryza Sativa, Feng Tan
Theses and Dissertations
It is well known that chromatin components are key players in establishing and maintaining spatial and temporal gene expression in plants, however, little is known about the epigenetic regulation on cell wall degradation and regeneration. This study aimed to 1) investigate the global proteome and phosphoproteome of rice chromatin, and 2) characterize changes in chromatin components and chromatin structure associated with cell wall degradation and regeneration, and 3) characterize the differentially regulated proteins and eventually explore the mechanism. In this dissertation, we examine proteins copurified with chromatin using both 2-DE gel and shotgun approaches from rice (Oryza sativa) suspension cells. …
Estimating Wildlife Viewing Recreational Demand And Consumer Surplus, James Cory Mingie
Estimating Wildlife Viewing Recreational Demand And Consumer Surplus, James Cory Mingie
Theses and Dissertations
Motivated by the increasing popularity of wildlife viewing and a growing emphasis on management for nontimber outputs, wildlife viewing demand was assessed. Specific objectives included determining factors affecting participation and frequency of use, and furthermore, deriving 2006 nationwide wildlife viewing consumer surplus estimates. With the travel cost method as the theoretical basis, the empirical estimation method employed was a two-step sample selection model that included a probit first step and a negative binomial second step. Consumer surplus per trip estimates ranged from $215.23 to $739.07 while aggregate national estimates ranged from $44.5 billion to $185.1 billion. Results reveal that age, …
Ethanolic Fermentation Of Bio-Oil Hydrolysate, Darrell Rex Livingston Jr
Ethanolic Fermentation Of Bio-Oil Hydrolysate, Darrell Rex Livingston Jr
Theses and Dissertations
As production of ethanol climbs, nonood feedstocks need to be utilized such as lignocellulosic biomass. The sugars present in bio-oil produced by fast pyrolysis can potentially be fermented by microbial organisms to produce cellulosic ethanol. This study shows the potential for microbial digestion of the aqueous fraction of bio-oil in an enrichment medium to consume glucose and produce ethanol. In addition to glucose, inhibitors such as furans and phenols are present in the bio-oil. A pure glucose enrichment medium of 20 g/L was used as a standard to compare with glucose and aqueous fraction mixtures for digestion. 30% by volume …
Intestinal Digenetic Trematodes Found In Double-Crested Cormorant Populations In The Mississippi Delta And The Potential Impact Of These Parasites On Commercial And Wild Fish Species Found In This Region, Mary Mcpherson O'Hear
Intestinal Digenetic Trematodes Found In Double-Crested Cormorant Populations In The Mississippi Delta And The Potential Impact Of These Parasites On Commercial And Wild Fish Species Found In This Region, Mary Mcpherson O'Hear
Theses and Dissertations
Double-crested cormorants have steadily increased in the Mississippi Delta. This bird serves as a definitive host for digenetic trematodes, many of which infect fish. To identify these digeneans in cormorants and determine the impact these infections have on wild fish in the Mississippi Delta, two surveys were done. Cormorants were collected for two years in the Mississippi Delta. At necropsy trematodes were collected and identified morphologically and molecularly as: Austrodiplostomum ostrowskiae, Hysteromorpha triloba, Drepanocephalus spathans, Ascocotyle longa and Pseudopsilostoma varium. Additionally, 14 fish species were collected from a Mississippi Delta lake. Fish were examined for parasites and Posthodiplostomum minimum metacercariae …
Antimicrobial And Antioxidant Activity Of Muscadine (Vitis Rotundifolia Michx) Extracts As Influenced By Solvent Extraction Methods And Cultivars, Weiwei Chen
Theses and Dissertations
Muscadine seeds from three cultivars (‘Carlos’, ‘Noble’ and ‘Ison’) were processed by 100% v:v methanol, 95% v:v ethanol and 70% v:v acetone. The acetone seed extracts exhibited the highest (p<0.05) total phenolics (21.62~24.84mg/g of dw) and antioxidant activity. A strong correlation (R2=0.891, p<0.01) was found between total phenolics and antioxidant activity. Methanol and ‘Carlos’ seed extracts generally showed the highest antimicrobial capacity against pathogen strains tested, which correlated well with tannic acid, catechin, epicatechin and tartaric acid content. Hot water-soluble muscadine skin extracts from 17 muscadine cultivars (6 bronze and 11 dark) showed effective antioxidant properties. Significant variations (p<0.05) were observed among the 17 cultivars in total phenolics, organic acids and antioxidant activity. ‘Alachua’, ‘Albermarle’, ‘Southland’, ‘Janebell’ and ‘CA9-37’ were the cultivars found to have the highest antioxidant capacity. Skin extracts of dark-skin cultivars showed higher (p<0.05) content than bronze-skin cultivars in phenolics, tartaric acid, tannic acid and ellagic acids.
Geospatial Relationships Of Tree Species Damage Caused By Hurricane Katrina In South Mississippi, Mark William Garrigues
Geospatial Relationships Of Tree Species Damage Caused By Hurricane Katrina In South Mississippi, Mark William Garrigues
Theses and Dissertations
This study examined Hurricane Katrina damage in southeast Mississippi to identify stand and site characteristics that may contribute to wind-related damage. Aggregated forest plot-level biometrics were coupled with storm meteorology, topographical features, and soil attributes using GIS techniques to produce damage maps for specific tree species. Regression Tree Analysis was utilized to explore the relationship between damage type and distance variables (distance to coast/storm track). Results indicated that the total damage class had the greatest relationship with distance variables; individual damage classes (shear and blowdown) displayed a better relationship with stand-level variables (Quadratic Mean Diameter, Lorey’s Mean Height, Trees Per …
Soil-Microbe-Volatile Organic Compound (Smvoc) Analysis And Authentic Science Inquiry Into Gas Chromatography For A General Chemistry Laboratory Class, Christopher Vincent Ruhs
Soil-Microbe-Volatile Organic Compound (Smvoc) Analysis And Authentic Science Inquiry Into Gas Chromatography For A General Chemistry Laboratory Class, Christopher Vincent Ruhs
Theses and Dissertations
Sound research and effective teaching are both essential to the progress of science. This thesis encompasses two studies to address the two needs: a multi-scale soil study designed to validate a novel soil biological characterization method; and a pilot pedagogical study designed to test the efficacy of authentic science inquiry into gas chromatography. The soil study relies on a comparison of six soils taken from the Bahamas and Michigan. The novel method, using soil-derived VOCs analyzed via gas chromatography-mass spectrometry (GC-MS), proved effective for resolving soils, as hypothesized, and may prove useful for analyzing soil biology rapidly and non-destructively in …