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Assessment Of Wild Ring-Tailed Lemur (Lemur Catta) Populations In Southwestern Madagascar With Implications For The Illegal Pet Trade, Samantha D. Calkins
Assessment Of Wild Ring-Tailed Lemur (Lemur Catta) Populations In Southwestern Madagascar With Implications For The Illegal Pet Trade, Samantha D. Calkins
Theses and Dissertations
Accurate population estimates are critical to inform conservation management of species. Incomplete sampling can lead to population underestimates and lacking conservation efforts. Population surveys are important for assessing human and animal welfare to allow for targeted conservation action. Recent ring-tailed lemur (Lemur catta) surveys have led researchers to conclude that L. catta populations are crashing. This has generated much attention and alarm, but may also be based on incomplete information. To better understand population dynamics, more thorough sampling is needed. Here, we survey five such sites to reassess the presence and abundance of L. catta in these locations. …
A Causal Analysis Of Conservation Practices On Corn Yield:Evidence From The Mississippi Delta And Arkansas Delta, Melody Afrane Pinamang
A Causal Analysis Of Conservation Practices On Corn Yield:Evidence From The Mississippi Delta And Arkansas Delta, Melody Afrane Pinamang
Theses and Dissertations
Employing the causal inference methods (matching for binary and continuous treatments), I examined the impact of conservation payments on corn yield. I used the propensity score and covariate distance matching and generalized propensity score methods to manage the problem of selection bias since the enrollment of conservation programs (i.e., receiving conservation payments) is not a randomized experiment. Using USDA Economic Research Service – Agricultural Resource Management Survey (ERS-ARMS) field-level data, I assessed whether receiving conservation payments had harm on corn yield in the Mississippi and Arkansas Delta. The findings from the two binary matchings showed that receiving conservation payments didn’t …
Viability Of Uio-66 Impregnated With Silver For Carbon Capture, Tin Le
Viability Of Uio-66 Impregnated With Silver For Carbon Capture, Tin Le
Theses and Dissertations
Carbon dioxide levels have been steadily increasing over the past decades; as of 2019 (411 ppm), CO2 levels are at their highest in over 40 years (330 ppm in 1977); consequently, regulations in certain areas require the reduction of CO2 emissions to combat this trend. For effective carbon capture, we require a sorbent that has high adsorption capacity, stability, and recyclability; in addition, an efficient and economical way to release the captured gas is needed as well. Metal-organic frameworks (MOFs) possess a high surface area for adsorption, but releasing the stored gases requires additional energy input that limits the overall …
Synthesis Of Bacterial Surface Glycans For Conjugate Vaccines, Teron D. Haynie
Synthesis Of Bacterial Surface Glycans For Conjugate Vaccines, Teron D. Haynie
Theses and Dissertations
Bacteria are coated with repeating units of oligosaccharides that exhibit remarkable diversity. Often, glycan units of three or even two sugars are sufficient to identify a species of bacteria. Such specificity makes bacterial surface glycans attractive vaccine targets. However, efforts to create effective vaccines against carbohydrates have been hampered by poor vaccine design as well as the human immune tendency to respond to glycan antigens with non-specific, T-cell independent mechanisms. As a result, carbohydrate vaccines have historically produced only adequate memory responses in healthy individuals and poor responses in the elderly or immunocompromised. To circumvent these issues, a novel conjugate …
Comparing Development Definitions Of Internally Displaced Communities And The Government: A Study Of The Chenchu People In The Nallamala Forest Of Southern India, Malavika Jinka Ramamurthy
Comparing Development Definitions Of Internally Displaced Communities And The Government: A Study Of The Chenchu People In The Nallamala Forest Of Southern India, Malavika Jinka Ramamurthy
Theses and Dissertations
The Indian government’s twin objectives of protecting the tiger population in the Nallamala forest in Andhra Pradesh and providing “development” to the indigenous Chenchu people have resulted in an on-going process of Chenchu displacement from the forest. The research is an anthropological intervention to comparatively analyze the development definitions of the Chenchu people (N=15), subgrouped location-wise as Deep Forest Chenchu, Intermediate Forest Chenchu, and Displaced Chenchu, and the Government and NGO representatives (N=13), including Integrated Tribal Development Agency representatives, NGO workers, and conservation authorities. Both groups defined development as access to basic amenities, education and jobs, health, freedom, livestock, and …
The Impact Of Brown Stink Bug (Hemiptera:Pentatomidae) Natural And Simulated Damage On Field Corn Growth And Yield, William Christopher Hardman
The Impact Of Brown Stink Bug (Hemiptera:Pentatomidae) Natural And Simulated Damage On Field Corn Growth And Yield, William Christopher Hardman
Theses and Dissertations
Field corn, Zea mays L., is a commonly grown crop in Mississippi. Brown stink bug, Euschistus servus Say, is an insect that can infest field corn. Growers and consultants have expressed concerns of the difficulty in detecting infestations and estimating yield loss potential once damage is found in a field. The results of these experiments showed a relationship between damage severity, plant height, and yield loss. As damage severity increased, plant height and yield were significantly reduced. On a per area basis, yields were reduced when ≥ 10% plants were damaged. Mean plant heights were reduced when ≥ 20% plants …
The Mediating Effect Of Gratitude And Social Support: Exploring The Relation Between Religiosity And Psychological Well-Being In A National Sample, Ethan Lantz
Theses and Dissertations
Previous research has found that religiosity is associated with psychological well-being (i.e., depressive symptoms, perceived stress, and life satisfaction), and this study sought to improve our understanding of this relation by examining two mediators: gratitude and social support. Additionally, this study sought to examine the effect of having been a custodial grandparent on social support and psychological well-being. These issues were examined using Structural Equation Modeling (SEM) and two subsets of participants from national samples (i.e., participants from the MIDUS II and MIDUS Refresher who completed outcome questionnaires with the Biomarker follow-up). Consistent with previous research, religiosity was associated with …
The Molecular And Cellular Dynamics Of Holstein Bull Spermatozoa Associated With Cryotolerance, Alicia Gilmore
The Molecular And Cellular Dynamics Of Holstein Bull Spermatozoa Associated With Cryotolerance, Alicia Gilmore
Theses and Dissertations
The objective of this study was to uncover molecular and cellular dynamics in spermatozoa from Holstein bulls with Good (11 bulls) and Poor (5 bulls) cryotolerance. Post-thaw sperm kinetics, membrane integrity, and DNA fragmentation were assessed. Data was analyzed using principal component analysis. The spermatozoa from Good bulls had a higher number of cells with intact membranes (P = 0.029), nonragmented DNA (P = 0.018), post-thaw viability (P < 0.001) in comparison to those of the Poor bulls. The Good bulls also had a faster average path velocity (VAP; P = 0.017), straight-line velocity (VSL; P = 0.036), a greater distance average path (DAP; P = 0.006) and distance straight line (DSL; P = 0.011). No differences were found in total antioxidant capacity (TAC), number of live cells or other kinetic parameters between spermatozoa from Good and Poor groups, showing that no one characteristic can be used to determine cryotolerance.
The Mother-Infant Dyad: Reconstructing Maternal Nutritional Status At Put Dragulina Cemetery, Julianne Marie Paige
The Mother-Infant Dyad: Reconstructing Maternal Nutritional Status At Put Dragulina Cemetery, Julianne Marie Paige
Theses and Dissertations
This research investigates maternal nutritional status through the analysis of young infants (N=27) that are likely pre-weaned from two Roman occupational periods at Put Dragulina. Because young infants are solely dependent on the nutritional status of their mother while in utero and postpartum through the consumption of breast milk, the presence of skeletal pathologies positively associated to nutritional deficiencies on the remains of young infants can be analyzed to reconstruct the nutritional status of the infant’s mother. This study finds that 89% (N=24) of young infants, regardless of occupational period, presented with skeletal pathologies consistent with nutritional deficiencies. These results …
The Prevalence And Mode Of Persistence Of Salmonella On Commercial Poultry Processing Equipment After Sanitization Procedures, Tomilola Olofunke Obe
The Prevalence And Mode Of Persistence Of Salmonella On Commercial Poultry Processing Equipment After Sanitization Procedures, Tomilola Olofunke Obe
Theses and Dissertations
The prevalence and mode of persistence of Salmonella on commercial poultry processing equipment was examined in this study. The equipment surfaces of six commercial processing plants were sampled over three-time periods designated as A (after processing), B (after cleaning), and C (after sanitization) and each plant was visited three times. Salmonella prevalence was greater (p<0.0001) at time A than times B and C, while there were no differences (p=0.386) between times B and C. A total of twentyive Salmonella isolates from five distinct serovars were recovered from the processing plants. Further examination of the recovered isolates showed that tolerance to sanitizing agents (chlorine and quaternary ammonium compounds, QAC) and/or biofilm formation was the possible mode of persistence. In addition, all the isolates were resistant to multiple antibiotics in different classes of drugs and more than two genes that are responsible for ⅰ). biofilm formation, ⅱ). resistance to QAC, ⅲ). oxidative stress response, and ⅳ). resistance to antibiotics were detected. Three selected isolates were further characterized based on virulence factors and antimicrobial resistance using whole genome sequencing (WGS) to possibly predict phenotypic characteristics. The WGS data correlates with phenotypic characteristics that were previously observed in the isolates including the ability to produce biofilms and resistance to antibiotics including β-lactams, aminoglycosides, and cephalosporins. WGS predicted the isolates carried resistance genes for antibiotic drug classes that were not observed phenotypically. These include macrolides and fluoroquinolone, which is a concern due to its use in treating foodborne infection. Furthermore, the genome of the three selected isolates were predicted to have over sixty virulence genes that allow Salmonella to invade, attach, and colonize the host cells. The results from this study suggest that the antimicrobials used for sanitization may be insufficient to inactivate Salmonella because of the ability to produce biofilms on processing surfaces. Most importantly, the results suggest the ability of the isolates to cause infection in humans meaning if contamination were to occur, the right antibiotic treatment could be a challenge. Further research is imperative to determine the effective antimicrobial for Salmonella biofilms.
Pyritic Lignite As A Source Of Iron For Soybean As Influenced By Variety And Soil Ph., Andrea Paola Elvir Flores
Pyritic Lignite As A Source Of Iron For Soybean As Influenced By Variety And Soil Ph., Andrea Paola Elvir Flores
Theses and Dissertations
Iron deficiency chlorosis (IDC) is a frequent problem in soybean [Glycine max (L.) Merr.] production on calcareous soils. Greenhouse and soil incubation experiments were established to evaluate pyritic lignite efficacy to supply Fe as compared to Fe-EDDHA and Fe-EDTA sources across contrasting IDC tolerance varieties grown on a slightly acid and a calcareous soil. Soybean IDC incidence was influenced by the soil properties and variety tolerance. All iron sources increased plant dry matter accumulation on the Leeper soil, whereas on the Marietta soil only lignite at 0.672 kg ha-1 produced an increase. Lignite at 0.336 kg ha-1 successfully improved Fe …
Quantifying Animal Movement: Using A Power-Law To Model The Relationship Between First Passage Time And Scale, Zoë Johnson
Quantifying Animal Movement: Using A Power-Law To Model The Relationship Between First Passage Time And Scale, Zoë Johnson
Theses and Dissertations
In a heterogenous environment, an animal will increase its search effort in areas where resources are abundant. This behavior can be detected in a path by a decrease in speed, an increase in tortuosity, or both. First passage time, the amount of time required for an animal to traverse a circle of a given radius, or buffer, is a common metric for quantifying spatial and temporal changes along a path. Historical methodology involving first passage time limits the utility of this metric. Here we instead follow the methodology put forth by Street et al. (2018) and use a power-law model …
Removal Of Molybdenum From Contaminated Water Using Douglas Fir Biochar/Iron Oxide Composites, Naba Krishna Das
Removal Of Molybdenum From Contaminated Water Using Douglas Fir Biochar/Iron Oxide Composites, Naba Krishna Das
Theses and Dissertations
Molybdenum (Mo) is a naturally occurring trace element that is present in drinking water mostly in the molybdate (MoO42-) form in well water. Recently, the EPA deemed Mo as a potential contaminant because exposure can lead to health effects such as gout, hyperuricemia, and lung cancer. In this work, we have assessed the sorptive removal of Mo using Douglas fir biochar (DFBC) and its chemically-coprecipitated iron oxide analogue (DFMBC). Adsorption was studied varying the batch sorption conditions; pH, equilibrium time (5 min-24 h), initial Mo concentrations (2.5-1000 mg/L), temperatures (5, 25, and 40 °C) and equilibrium method. Langmuir capacities for …
Response Of Male White-Tailed Deer (Odocoileus Virginianus) To Human Activity On The Landscape, Colby Henderson
Response Of Male White-Tailed Deer (Odocoileus Virginianus) To Human Activity On The Landscape, Colby Henderson
Theses and Dissertations
Human activity affects white-tailed deer (Odocoileus virginianus) movement and habitat selection during all times of the year, but knowledge is limited regarding how human risk affects white-tailed deer during the summer and winter. During spring and summer, variation in patch selection varied. Natural vegetation was selected for early in the year, with anthropogenic forages being important for deer use during the summer. During the winter, deer responded to different levels of risk. As hunter risk increased on the landscape, deer altered selection of the landscape. Deer avoided areas that were heavily used by hunters, using areas containing less hunter risk. …
Nonoscillatory Second-Order Procedures For Partial Differential Equations Of Nonsmooth Data, Philku Lee
Nonoscillatory Second-Order Procedures For Partial Differential Equations Of Nonsmooth Data, Philku Lee
Theses and Dissertations
Elliptic obstacle problems are formulated to find either superharmonic solutions or minimal surfaces that lie on or over the obstacles, by incorporating inequality constraints. This dissertation investigates simple iterative algorithms based on the successive over-relaxation (SOR) method. It introduces subgrid methods to reduce accuracy deterioration occurring near the free boundary when the mesh grid does not match with the free boundary. For nonlinear obstacle problems, a method of gradient-weighting is introduced to solve the problem more conveniently and efficiently. The iterative algorithm is analyzed for convergence for both linear and nonlinear obstacle problems. Parabolic initial-boundary value problems with nonsmooth data …
Phosphate Reclamation From Water Using Douglas Fir Biochar Fe/Mg-Ldh Composites, Sharifur Rahman
Phosphate Reclamation From Water Using Douglas Fir Biochar Fe/Mg-Ldh Composites, Sharifur Rahman
Theses and Dissertations
Eutrophication, caused by phosphate, can be detrimental both for the aquatic environment and human health. This research aims to provide deep knowledge about the adsorption properties of low-cost Fe/Mg layered double hydroxide modified biochar (LDHBC) for removal of phosphate from aqueous solution. Firstly, Fe/Mg layered double hydroxide (LDH) was synthesized by mixing FeCl3 and MgCl2. 6H2O salts in water, followed by NaOH treatment (coprecipitation method). For LDHBC, FeCl3, and MgCl2. 6H2O salts were dissolved in water, and Douglas fir biochar was added to the salts mixture to make a slurry, followed by NaOH treatment. The surface chemistry and elemental composition …
Early Administration Of Probiotics Through In Ovo Inoculation And Their Impact On Gut Microflora, Immune Response, And Growth Performance Of Broiler Chicks, Claudia Duneska Castañeda Bustillo
Early Administration Of Probiotics Through In Ovo Inoculation And Their Impact On Gut Microflora, Immune Response, And Growth Performance Of Broiler Chicks, Claudia Duneska Castañeda Bustillo
Theses and Dissertations
Controlling pathogenic presence in broilers has become a priority in the poultry industry to prevent economic losses due to disease and infection, as well as the possible contamination of chicken products. The use of antibiotics reduces the incidence of infections; however, their removal from production initiated the search for suitable alternatives. Probiotic ineed supplements have been widely evaluated as alternatives. Probiotic use has improved broiler performance, reduced pathogenic loads, and stimulated the immune system at later life stages. However, there is still a gap in protection during the first weeks after the chick hatches. The in ovo supplementation of probiotics …
Characterization Of Integrin-Linked Kinase Functions In Cell Wall Immunity, Emily Cooley
Characterization Of Integrin-Linked Kinase Functions In Cell Wall Immunity, Emily Cooley
Theses and Dissertations
Plants have several defense systems used as protection from environmental stressors, and the plant cell wall (CW) is considered the “frontline” during attack. The CW is a complex structure essential for growth and development and is composed of components such as cellulose, polysaccharides, pectin, and lignin. Lignin is the central source of strength for the CW and helps form a water-impermeable barrier for defense. The extent of plant CW defense, immunity, and the components involved still need further investigation. Integrin-Linked Kinases (ILKs), a subfamily of Raf-like kinases (RAFs), are thought to participate in signal-processing pathways of the CW and plasma …
Characterizing Human Receptor-Mediated Cytotoxicity By Staphylococcal Bi-Component Leucocidins In S. Aureus Pathogenesis, Jaime Rutter
Characterizing Human Receptor-Mediated Cytotoxicity By Staphylococcal Bi-Component Leucocidins In S. Aureus Pathogenesis, Jaime Rutter
Theses and Dissertations
Staphylococcus aureus employs an array of virulence factors to aid in its pathogenesis. A subset of cytotoxins termed bi-component leucocidins have been characterized as important determinants in the host-pathogen interaction in S. aureus infections. While they have been studied over a century, bi-component leucocidins’ complex mechanisms in pathogenesis have not been fully elucidated. Secreted as monomers, with the exception of LukAB/GH, many combinations of the S- (HlgA, HlgC, LukE, LukS, LukA/H) and F- (HlgB, LukD, LukF, LukB/G) components have demonstrated cell lysis via pore formation and a magnified proinflammatory response at sublytic concentrations. While studies have described various host cellular …
Conservation And Coexistence Of A Federally Listed Species Within A Landscape Highly Modified For Commodity Production: Gopher Tortoise (Gopherus Polyphemus) And Intensive Pine (Pinus Spp.) Management, Duston R. Duffie
Theses and Dissertations
Gopher tortoise (Gopherus polyphemus; hereinafter, tortoise) is listed as threatened under the Endangered Species Act in the western portion of its range. Across the species’ range, approximately 70 % of potential habitat is privately owned, and these properties are often managed primarily for timber production. However, tortoise ecology on private, working forest landscapes remains poorly understood. To provide a better understanding of tortoise response to active forest management, I evaluated population demographics, movement ecology, and habitat selection of two tortoise populations: former Ben’s Creek Wildlife Management Area (BC) in Washington Parish, Louisiana and Perry County Gopher Tortoise Management Unit (PCGTMU) …
Easily Overlooked: Modelling Coastal Dune Habitat Occupancy Of Threatened And Endangered Beach Mice (Peromyscus Polionotus Spp.) Using High-Resolution Aerial Imagery And Elevation Models Of The Northern Gulf Of Mexico, Wesley Burger
Theses and Dissertations
The Gulf of Mexico dune system is a broad and dynamic environment that varies greatly in geomorphology and vegetative composition across the Gulf coastline. Beach mice (Peromyscus polionotus spp.) are an endangered species that rely on coastal habitat structure. I hypothesized that beach mouse occupancy would be dependent upon coastal dune land cover and landform features. I identified coastal landforms using high-resolution elevation data and landform models in GRASS GIS and identified coastal dune vegetation classes using high-resolution aerial imagery and object oriented vegetation classification. These features were used to create a dynamic occupancy model to determine occupancy patterns in …
Effects Of Cover Crop Management On Biologically Related Soil Properties In A Mississippi Dryland Soybean System, Sapana Pokhrel
Effects Of Cover Crop Management On Biologically Related Soil Properties In A Mississippi Dryland Soybean System, Sapana Pokhrel
Theses and Dissertations
Soil microorganisms are important for the stabilization and preservation of a good soil structure. Management practices can affect the diversity and population of microorganisms, which could beneficially change soil properties and promote a more sustainable dryland system. This study was established near Pontotoc, MS on Atwood silt loam to evaluate the impacts of cover crops and fertilizer sources on selected biologically related soil properties in a no-tillage, dryland soybean system. Soil analyses included total carbon and nitrogen, permanganate oxidizable carbon (POXC), easily extractable glomalin-related soil protein (EE-GRSP), water stable aggregate (WSA) and soil pH. Cover crop biomass and percent groundcover, …
Effects Of Fire Phenology And Stump Sprouting On Summer Nutritional Carrying Capacity For White-Tailed Deer, Rainer Nichols
Effects Of Fire Phenology And Stump Sprouting On Summer Nutritional Carrying Capacity For White-Tailed Deer, Rainer Nichols
Theses and Dissertations
Prescribed fire is commonly used to manage white-tailed deer habitat. However, nutrition is still limited during the summer for deer in the Southeast and prescribed fire is commonly restricted to the dormant season. Knowledge of fire phenology effects on summer nutrient availability is relatively unknown. Stump sprouts may also affect available nutrition, which could be important when managing for summer nutrition. To address this summer nutritional stress period, I examined impacts prescribed fire phenology and mechanical stump sprouting had on summer nutritional carrying capacity for deer. Results indicated implementing prescribed fire in both dormant and growing-seasons led to increased summer …
Evaluation Of Bollworm Behavior, Damage, And Control In Cotton With Insecticidal Proteins And Formulated Insecticides, Russell Ethan Godbold
Evaluation Of Bollworm Behavior, Damage, And Control In Cotton With Insecticidal Proteins And Formulated Insecticides, Russell Ethan Godbold
Theses and Dissertations
The bollworm, Helicoverpa zea (Boddie), is an economically important pest of cotton and is becoming more difficult to control in the United States. This project was designed to develop a better understanding of the effects of resistance development and plant structures on the efficacy of Bt cotton and foliar insecticides. Experiments examined larval behavior and damage in current cotton varieties expressing proteins from Bacillus thuringiensis. Other experiments examined the effects of floral structures on the control of bollworm using foliar insecticides. Results suggest that larval feeding and avoidance behavior is dependent on point of eclosion. Fruiting form damage increased in …
A Survey Of Neonicotinoid Residue Levels In Native Bees And Soil Of The Mississippi Black Belt Prairie, Sena Isbilir
A Survey Of Neonicotinoid Residue Levels In Native Bees And Soil Of The Mississippi Black Belt Prairie, Sena Isbilir
Theses and Dissertations
Reports of declining insect populations suggest that more research focusing on this phenomenon is needed, especially in pollinator insects. Climate change, habitat destruction, and usage of certain pesticides have all been implicated in insect decline. Neonicotinoid pesticides are highly toxic to bees, can have drastic sub-lethal effects on behavior, and are persistent in the environment; likewise, they have been implicated as a major factor affecting bee populations. However, there are limited studies on native bees regarding their interactions with neonicotinoids, even regarding simple questions such as exposure levels. In this study, we aimed to assess concentrations of common neonicotinoids in …
Adversity And Resilience Training: Trauma-Informed Care As A Universal Community Intervention, Lediya Dumessa
Adversity And Resilience Training: Trauma-Informed Care As A Universal Community Intervention, Lediya Dumessa
Theses and Dissertations
Growing evidence of the health risks associated with adverse childhood experiences (ACEs) has prompted public health and community initiatives to promote awareness, detection, and responses that are trauma informed. Nationwide programs to integrate trauma-informed care into education, health care, and child serving agencies, have thus far led to the proposal and advancement of trauma-informed policies and practices in many communities. While Mississippi agencies include trauma-specific intervention and training, statewide ACEs initiatives and relevant data are still limited. This project aimed to contribute to the larger goal of a statewide trauma-informed paradigm shift, by increasing ACEs awareness and developing recommendations for …
Allelopathy In Weedy Rice As A Genetic Resource For Developing Competitive Rice Varieties, Brooklyn Christine Schumaker
Allelopathy In Weedy Rice As A Genetic Resource For Developing Competitive Rice Varieties, Brooklyn Christine Schumaker
Theses and Dissertations
Weedy rice is of the same species as cultivated rice, Oryza, and is a common rice weed exhibiting allopathic characteristics. Incorporation of allelopathic traits from weedy rice into cultivated rice may have a positive impact on rice yield. The overall objective of this study was to characterize weedy rice accessions based on the allelopathic potential to suppress barnyardgrass. These accessions, once discovered, may be used in identifying phenotypic traits and genes associated with their weed suppressive trait. Ten weedy rice accessions, and five rice cultivars (Rex, CL163,Rondo, PI312777, PI338046) were screened using a stair-step technique. The allelopathic potential was calculated …
Assisted Reproductive Technologies In Male Ambystoma Tigrinum With Application To Threatened Newt Species, Amanda Gillis
Assisted Reproductive Technologies In Male Ambystoma Tigrinum With Application To Threatened Newt Species, Amanda Gillis
Theses and Dissertations
The world is currently facing an amphibian extinction crisis and wild salamanders and newts (Order: Caudata) are the most disadvantaged with 52% of species threatened. Captive breeding programs are been established to act as assurance colonies, but they are overwhelmingly failing due to the lack of environmental cues to stimulate reproduction and other factors. Therefore, assisted reproductive technologies (ART) are being developed to overcome these barriers. This project expands upon the limited existing information on caudate ART through studies in the model species, Ambystoma tigrinum, for application to threatened species. Specific objectives included the characterization of motility longevity in artificially …
Biomechanical Comparison Of External Fixation And Double Plating For The Stabilization Of A Canine Cadaveric Supracondylar Humeral Fracture Gap Model, Sarah Castaldo
Theses and Dissertations
A 2 cm ostectomy was performed on 10 pairs of canine cadaveric humeri proximal to the supratrochlear foramen. Stabilization was with a double plate construct (DB-PLATE) (n=10) or external skeletal fixator with intramedullary pin tie-in configuration (ESF-IMP) (n=10). Cyclic testing was performed. Axial compressive load to failure testing followed. Data analyzed included dynamic stiffness, stiffness and yield load. No constructs failed during cyclic testing or lost stiffness over time, although mean dynamic stiffness was greater for DB-PLATE compared to ESF-IMP. Mean stiffness of DB-PLATE in load-toailure testing was not significantly different than ESF-IMP. Yield force of DB-PLATE was significantly higher …
Biomolecular Analysis Of An Insect Of Economic Importance, The Multicolored Asian Lady Beetle, Selene Perales Sanchez
Biomolecular Analysis Of An Insect Of Economic Importance, The Multicolored Asian Lady Beetle, Selene Perales Sanchez
Theses and Dissertations
Insect-human interactions are very complex; one example is the relationship between humans and the multicolored Asian lady beetle (ALB; Harmonia axyridis). ALB, a native to Asia, was introduced into North American agricultural fields and orchards as a biological control agent for aphids and other soft-bodied insects. However, it is considered a pest by some humans as it invades houses in the fall and winter months. Additionally, ALBs feed on fruits when aphids are scarce, and the hemolymph secreted by ALBs contaminates fruit and affects the taste of fruit products. ALBs invasive behavior has led to concern that this non-native species …