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Articles 841 - 870 of 22942
Full-Text Articles in Entire DC Network
The Biology Of Green Antelopehorn Milkweed (Asclepias Viridis Walter) And Hemp Dogbane (Apocynum Cannabinum L.) And Response To Triclopyr Formulations And Other Auxin Herbicides, Kayla L. Broster
Theses and Dissertations
Studies were conducted in Oktibbeha and Clay Counties in Mississippi to determine the response of green antelopehorn milkweed and hemp dogbane to triclopyr and other auxin herbicides in non-cropland areas. These studies were conducted at four locations with well established populations for each species throughout 2020 to 2023, with applications repeated at each location the following year if populations persisted. Treatments included a high and low rate of each herbicide studied, with all four triclopyr formulations included for both species. Injury response data were collected two and four weeks after treatment and population density data were evaluated using individual stem …
Immature Bull Sharks (Carcharhinus Leucas) Of Coastal Alabama: A Formal Assessment Of Habitat Change, The ‘Shark Nursery Area’ Concept, And Facilitation Of Stakeholder Support, Lindsay Lee Mullins
Immature Bull Sharks (Carcharhinus Leucas) Of Coastal Alabama: A Formal Assessment Of Habitat Change, The ‘Shark Nursery Area’ Concept, And Facilitation Of Stakeholder Support, Lindsay Lee Mullins
Theses and Dissertations
Evaluation of long-term datasets is essential for management of nearshore, estuarine areas given their heterogeneity and high biodiversity. This is especially true for fisheries, where data deficiency often restricts informed management decisions. The Alabama Department of Conservation and Natural Resources Marine Resources Division (AMRD) has conducted gillnet sampling along the Alabama Gulf Coast since 2001, yielding a long-term dataset capable of assessing resource change responses. The region is highly dynamic, marked by high levels of biodiversity, valuable fisheries, and a population of immature bull sharks (Carcharhinus leucas). However, changing environmental conditions have altered coastal ecosystem dynamics, confounding management efforts. Here, …
Trace Mineral Supplementation Strategies For Beef Cattle During Preconditioning And Feedlot Receiving, Madeline G. Mcknight
Trace Mineral Supplementation Strategies For Beef Cattle During Preconditioning And Feedlot Receiving, Madeline G. Mcknight
Theses and Dissertations
Beef cattle routinely undergo a variety of stressors within the preconditioning and feedlot receiving phases which may impair animal performance and health. Trace mineral supplementation, either through dietary or injectable sources, is proposed to mitigate these effects through metabolic and immune system support. Two systematic reviews and meta-analyses were conducted to evaluate the efficacy of two different oral supplementation methods, organic (OTM) and inorganic (INR), and injectable trace mineral (ITM) solutions on average daily gain (ADG) and morbidity. Across 20 studies, OTM supplementation increased ADG (P = 0.01) when compared to INR, but did not affect morbidity (P = 0.92). …
Spatiotemporal Ecology Of Mycobacterium Ulcerans And Mycolactone Functions In French Guiana And Southeastern United States Aquatic Environments, Magdalene Dogbe
Spatiotemporal Ecology Of Mycobacterium Ulcerans And Mycolactone Functions In French Guiana And Southeastern United States Aquatic Environments, Magdalene Dogbe
Theses and Dissertations
Mycobacterium ulcerans, the causative agent of Buruli ulcer, produces mycolactone, a polyketide toxin traditionally studied for its role in human pathogenesis. This dissertation presents a comprehensive spatiotemporal analysis of M. ulcerans and mycolactone producing mycobacteria (MPM) ecology in the Americas and also reveals mycolactone's role in the environment as a microbial community regulator. Through comparative studies in French Guiana (endemic) and the southeastern United States (non-endemic), combined with experimental microcosm investigations, this research contributes to environmental pathogen ecology understanding. Environmental surveillance across 2,226 samples from French Guiana revealed complete MPM restriction to freshwater environments, with zero detections from 1,226 coastal …
Improvement Of Spot Spraying Treatments Using Precision Application Technologies, Steffen Telgmann
Improvement Of Spot Spraying Treatments Using Precision Application Technologies, Steffen Telgmann
Theses and Dissertations
Chemical plant protection is widely adopted in agriculture and plays a crucial role in maximizing plant production. Several developments for site-specific applications have been implemented in chemical plant protection, driven by economic, social, and environmental considerations. Spot spraying technology, which utilizes single nozzles or a limited number of nozzles to treat specific areas, is now available and gaining market penetration. However, its performance depends on carefully optimized application parameters to ensure consistent coverage and efficacy, thereby mitigating both under- and overdosing. To address concerns including reduced efficacy, resistance evolution, and environmental impacts, this work researches the effects of nozzle selection …
The Social In The Spiritual: Non-Theistic Spirituality In 12-Step Addiction Recovery, Steph Jacobs
The Social In The Spiritual: Non-Theistic Spirituality In 12-Step Addiction Recovery, Steph Jacobs
Theses and Dissertations
To investigate whether Western-raised Narcotics Anonymous (NA) members engage in non-theistic spirituality and non-humanist modes of sociality with non-human beings, I conducted six qualitative interviews and a small-scale survey within a Vancouver NA community. The majority of participants practice non-theist spirituality, and three interviewees relate to non-humans in ways not accounted for by Western humanism. Findings suggest that connection and sociality are intrinsically woven into recovery and well-being. This research opens conversations about non-theistic spirituality in NA recovery, non-human sociality and healing, processes of ontological negotiation, and the entanglement of spirituality, sociality, and well-being. Through daily practices of exploration and …
Toward A Unified Network Flow Framework: From Conservation Principles To Fluid Dynamics Models, Zonghan Zhang
Toward A Unified Network Flow Framework: From Conservation Principles To Fluid Dynamics Models, Zonghan Zhang
Theses and Dissertations
Network flows govern a wide range of critical systems, from tangible infrastructures like transportation and power grids to replicable processes such as information spread and epidemics. While tangible flows obey conservation laws and physical constraints, replicable flows, like rumors or viruses, can grow, decay, or vanish unpredictably. Despite their increasing interaction in real-world settings, these flow types are typically modeled in isolation, using disconnected mathematical frameworks. This dissertation presents a unified modeling approach that bridges the gap between conserved and replicable flows by embedding principles from fluid dynamics into graph-based propagation models. I introduce physically informed extensions to classical models, …
Building From The Ground Up: Informing Inclusive Curriculum Design Through Qualitative Inquiry: Development Of An Early Childhood Curriculum For Children In Mississippi, Alicia Deaver
Theses and Dissertations
Curriculum is a vital component of high-quality early care and education programs. Barriers such as cost, limited education and training, and restricted access to materials often make it difficult for many programs to adopt or implement developmentally appropriate curricula. Effective curriculum implementation relies on individualization and cultural responsiveness to be fully inclusive of children of all abilities. This study addressed the formative and summative processes of the My Mississippi Adventures project, a curriculum developed for use by early childhood educators throughout the state. The curriculum was designed with direct input from early childhood educators to address the unique challenges faced …
Assessing Water Quality And Algae In Wetland Reserve Easements In The Alluvial Valleys Of Mississippi And Louisiana, Avery June Wissmueller
Assessing Water Quality And Algae In Wetland Reserve Easements In The Alluvial Valleys Of Mississippi And Louisiana, Avery June Wissmueller
Theses and Dissertations
Wetlands in agricultural landscapes play a critical role in improving water quality by retaining and transforming nutrients and pollutants. In the Mississippi Alluvial Valley (MAV), widespread conversion of bottomland hardwood forests to row-crop agriculture has diminished this natural function. The Wetland Reserve Easement (WRE) program restores wetlands on marginal farmland to recover ecosystem services. In this study, I evaluated water quality and algal productivity in WREs compared to natural reference wetlands and crop sites. Restored wetlands showed improved water quality compared to crop sites and were often comparable to or intermediate between reference wetlands. Seasonal variation and hydrologic differences shaped …
Understanding Acceptance Capacity And Intentions Of Mississippians To Participate In The Conservation And Management Of Black Bears In Mississippi, Basant Pant
Theses and Dissertations
This dissertation explores the acceptance capacity of Mississippians towards black bears (Ursus Americanus), and their intentions to participate in their conservation and management. It intends to bridge the theory and application of wildlife acceptance capacity among three main objectives. First, a systematic literature review of journal articles employing the Search, Appraisal, Synthesis and Analysis (SALSA) method revealed the development phase of Wildlife Acceptance Capacity (WAC)-conceptual phase (1988 -2000) and applied phase (post 2000), highlighting the strong scholarly collaboration among high human development index (HDI) countries with limited collaboration with the low HDI countries. Second, a mail survey of 4,080 Mississippi …
Quantifying Benefits Of Biochar With Variable Absorption Capacity As A Partial Cement Replacement In Concrete, Benjamin Shannon
Quantifying Benefits Of Biochar With Variable Absorption Capacity As A Partial Cement Replacement In Concrete, Benjamin Shannon
Theses and Dissertations
Extensive research has been conducted on biochar-incorporated concrete. However, no concrete mixture design guideline is currently available for implementing biochar incorporation in practice. The objective of this study was to correlate biochar absorption capacity with the compressive strength of biochar-incorporated concrete, to quantify the benefits of biochar and develop mix design guidelines. Biochar with varying absorption capacities was incorporated into concrete at 10%, 20%, and 40%. Strength and moisture loss were recorded over the 90-day curing period of the biochar-incorporated concrete. Results revealed three main findings: (1) in 10%, 20%, and 40% biochar mixes, the normalized strengths ranged from 0.65–0.85, …
Study Of Insect Frass-Associated Microbiome On Plant Growth And Their Potential Use As Biofertilizer, Jasmine Sahota
Study Of Insect Frass-Associated Microbiome On Plant Growth And Their Potential Use As Biofertilizer, Jasmine Sahota
Theses and Dissertations
An increasing global food demand and the urgent need for sustainable agricultural practices have driven interest in insects as alternative feed and food sources. Insect frass, a by-product of insect rearing, represents a rich organic carbon source with diverse microbes that can enhance soil health and promote beneficial plant-microbe interactions. This study characterized the bacterial (16S-V4) and fungal (ITS2) microbiomes of frass from Black Soldier Fly (BSF) and Cricket species and evaluated their effects on maize (Zea mays) growth. Four frass variants were applied at rates of 56-280 kg ha⁻¹ in a pot experiment with untreated soil and mineral fertilizer …
The Impact Of Land Use Types On Pollinator Communities In Upland Oak Forests, John Olanrewaju Omolewa
The Impact Of Land Use Types On Pollinator Communities In Upland Oak Forests, John Olanrewaju Omolewa
Theses and Dissertations
This research investigates how land use types influence pollinator communities in upland oak forests, focusing on bees (Hymenoptera: Apoidea). The study has four objectives: (1) compare bee species richness and abundance across four land use types; hardwood, pine/mixed pine, open fields/agricultural areas, and scattered hardwood; (2) test whether bee community composition differs among these land uses; (3) assess how land use shapes diversity of both common and rare bee species; and (4) investigate the reproductive output of cavity-nesting communities in upland oak forests. Together, these aims provide a comprehensive understanding of how land use practices affect wild bee communities in …
Considerations For Cottonseed Oil As A Feedstock For Renewable Fuels, John Elmore
Considerations For Cottonseed Oil As A Feedstock For Renewable Fuels, John Elmore
Theses and Dissertations
As the world population grows and the standard of living improves in developing countries, global energy demand will continue to rise, with energy use in the developing world expected to increase dramatically more than the per capita reductions in developed countries from efficiency improvements. Nearly a third of the total global energy demand is used for transportation, resulting in a substantial contribution to greenhouse gas (GHG) emissions. While the demand for energy rises, initiatives and regulations are underway to mitigate the amount of GHG emissions to Earth’s atmosphere. As efforts progress in industry, governments, and society to reduce the total …
Evolutionarily Convergent Mechanism Of Formin Regulation Coordinates Actin Polymerization In Apicomplexan Parasites, Pengge Qian, Yong Fu, Jianwei Zeng, Michael J Naldrett, Rui Zhang, L David Sibley
Evolutionarily Convergent Mechanism Of Formin Regulation Coordinates Actin Polymerization In Apicomplexan Parasites, Pengge Qian, Yong Fu, Jianwei Zeng, Michael J Naldrett, Rui Zhang, L David Sibley
2020-Current year OA Pubs
Apicomplexan parasites rely on actin-based motility for host cell invasion and for their dissemination. Although previous studies implicate formin 1 (FRM1) in governing this process in
2023u_Approved_Sm05_Cm_Bio-4373-4371-Animal-Ecology-And-Lab-Rev1, Undergraduate Curriculum Council
2023u_Approved_Sm05_Cm_Bio-4373-4371-Animal-Ecology-And-Lab-Rev1, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2023u_Approved_Sm06_Pm_Bs-Biological-Sciences-Emphasis-Pre-Professional-Studies-Rev1, Undergraduate Curriculum Council
2023u_Approved_Sm06_Pm_Bs-Biological-Sciences-Emphasis-Pre-Professional-Studies-Rev1, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2023u_Approved_Sm04_Nc_Bio-3693-Vertebrate-Natural-History-Rev1, Undergraduate Curriculum Council
2023u_Approved_Sm04_Nc_Bio-3693-Vertebrate-Natural-History-Rev1, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2023u_Approved_Sm03_Pm_Bs-Environmental-Science-Curr-Update, Undergraduate Curriculum Council
2023u_Approved_Sm03_Pm_Bs-Environmental-Science-Curr-Update, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2023u_Approved_Sm01_Reconfiguration_Bs-Biochemistry, Undergraduate Curriculum Council
2023u_Approved_Sm01_Reconfiguration_Bs-Biochemistry, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2022u_Sm20_Approved_Nc_Bio-4114-Phylogenetics-And-Systematics, Undergraduate Curriculum Council
2022u_Sm20_Approved_Nc_Bio-4114-Phylogenetics-And-Systematics, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2022u_Sm19_Approved_Cm_Bio-3303-General-Entomology, Undergraduate Curriculum Council
2022u_Sm19_Approved_Cm_Bio-3303-General-Entomology, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2022u_Sm18_Approved_Cm_Bio-3313_Economic-Entomology, Undergraduate Curriculum Council
2022u_Sm18_Approved_Cm_Bio-3313_Economic-Entomology, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2022u_Sm17_Approved_Cd_Bio-4202-Issues-In-Human-Ecology, Undergraduate Curriculum Council
2022u_Sm17_Approved_Cd_Bio-4202-Issues-In-Human-Ecology, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2022u_Sm15_Approved_Cd_Bio-3511_Wildflowers-Of-Arkansas-Laboratory, Undergraduate Curriculum Council
2022u_Sm15_Approved_Cd_Bio-3511_Wildflowers-Of-Arkansas-Laboratory, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2022u_Sm16_Approved_Cd_Bio-4201-Issues-In-Human-Ecology-Laboratory, Undergraduate Curriculum Council
2022u_Sm16_Approved_Cd_Bio-4201-Issues-In-Human-Ecology-Laboratory, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2022u_Sm13_Approved_Cd_Bio-1023-Biological-Inquiry, Undergraduate Curriculum Council
2022u_Sm13_Approved_Cd_Bio-1023-Biological-Inquiry, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2022u_Sm14_Approved_Cd_Bio-3501-Wildflowers-Of-Arkansas, Undergraduate Curriculum Council
2022u_Sm14_Approved_Cd_Bio-3501-Wildflowers-Of-Arkansas, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2023u_Approved_Nhp20_Name-Change_Bs-Dietetics, Undergraduate Curriculum Council
2023u_Approved_Nhp20_Name-Change_Bs-Dietetics, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.
2023u_Approved_Lac46_Reconfiguration_Bs-Fashion-Merchandising-And-Marketing, Undergraduate Curriculum Council
2023u_Approved_Lac46_Reconfiguration_Bs-Fashion-Merchandising-And-Marketing, Undergraduate Curriculum Council
All Approved Curriculum
No abstract provided.