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Articles 511 - 540 of 8048
Full-Text Articles in Entire DC Network
C3 And C4 Grass Dominated Plant Communities Differ In Response To Future Larger And Less Frequent Rainfall, Zigeng Chen
C3 And C4 Grass Dominated Plant Communities Differ In Response To Future Larger And Less Frequent Rainfall, Zigeng Chen
Electronic Theses and Dissertations
Climate change is leading to larger and less frequent rainfall in the Northern Great Plains (NGP). We ask if this change in rainfall would influence carbon (C) and nitrogen (N) cycling in the NGP. First, we collected soils from C3 and C4 grass dominated plant communities from western South Dakota and conducted an incubation experiment to explore the effects of soil water content (SWC) and temperature on soil respiration (Rs) and N mineralization rate (ΔIN). Second, we conducted a three-year rainfallmanipulation (RaMP) experiment with two distinct rainfall regimes (frequent/small and infrequent/large events with constant total monthly precipitation) and two grasses …
Ecological Impacts Of Anthropogenic Chemicals On Non-Target Species And The Role Of Plant Diversity In Ecosystem Restoration And Resilience, Shiva Torabian
Ecological Impacts Of Anthropogenic Chemicals On Non-Target Species And The Role Of Plant Diversity In Ecosystem Restoration And Resilience, Shiva Torabian
Electronic Theses and Dissertations
Understanding ecosystem processes in rangelands is of paramount importance for ensuring global food security, given their pivotal role in sustaining forage and livestock production. Central to this understanding are fundamental processes such as nutrient cycling, decomposition, and plant biomass dynamics. However, the use of anthropogenic chemicals in agricultural practices has the potential to exert significant influence on these critical ecosystem functions. A pivotal factor in this context is the plant diversity inherent to these rangeland ecosystems. Plant diversity not only provides essential ecosystem functions but also enhances them with the capacity to withstand and recover from perturbations. Ecosystems characterized by …
Effects Of Agricultural Chemicals On Native Plants Of The Northern Great Plains, Gabrielle Bolwerk
Effects Of Agricultural Chemicals On Native Plants Of The Northern Great Plains, Gabrielle Bolwerk
Electronic Theses and Dissertations
Agricultural chemicals are ubiquitous on the Northern Great Plains landscape and have negative impacts on non-target plant communities, even at small doses. Northern Great Plains grassland plant communities may experience herbicide drift from agricultural fields or be subject to livestock pharmaceuticals in grazing lands. My research objective was to evaluate if and how native plants are affected by agricultural chemical presence at different concentrations. In Chapter 2, I studied the effect of different concentrations of three common agricultural herbicides (2,4-D, atrazine, and trifluralin) on the germination, emergence, and growth of native plant species of the Northern Great Plains. I performed …
Unveiling Race Diversity And Fungicide Sensitivity Profiles Of Pyrenophora Tritici Repentis Populations In South Dakota Collected From 2021-2023, Jaswinder Kaur
Unveiling Race Diversity And Fungicide Sensitivity Profiles Of Pyrenophora Tritici Repentis Populations In South Dakota Collected From 2021-2023, Jaswinder Kaur
Electronic Theses and Dissertations
Tan spot, a foliar disease of wheat caused by the ascomycetes fungus Pyrenophora tritici repentis (Ptr), poses a significant threat to wheat crops globally. The disease gained economic importance in the late 1970s due to shifts in farming practices, such as minimal tillage and planting on crop residues, providing favorable conditions for the pathogen to overwinter and cause infections. Ptr is classified into eight races based on the production of necrotrophic effectors—Ptr ToxA (necrosis-inducing), Ptr ToxB, and Ptr ToxC (chlorosis-inducing on respective susceptible and sensitive cultivars)—resulting in distinct symptoms on susceptible wheat differentials. The inverse gene-for-gene hypothesis of Ptr suggests …
Writing Young Adult Fiction: Reflections On Narration And Theme In Young Adult Literature, Kimberly Davidson
Writing Young Adult Fiction: Reflections On Narration And Theme In Young Adult Literature, Kimberly Davidson
Electronic Theses and Dissertations
According to Young Adult Library Services, “Young Adult Literature is a genre that is separate from Children's Literature. It emerged in the twentieth century when teenagers became a powerful force of the economy in the 1930s and gained prominence in the sixties.” Various sources list common elements that make YA literature a distinct category. 1) YA books appeal to the interests of readers from ages twelve to eighteen. 2) YA books typically explore a teenage character’s entry into an unfamiliar “world.” 3) YA books usually feature a protagonist’s self-reflection on events that influence their forays into the adult world. 4) …
Characterizing Vaginal Gene Expression In Prepubertal Gilts, Shannon Lee Dierking
Characterizing Vaginal Gene Expression In Prepubertal Gilts, Shannon Lee Dierking
Electronic Theses and Dissertations
The best-known predictor of reproductive success in gilts is the age at puberty. Early puberty (i.e., d170 – d180 of age) is associated with improved long-term reproductive performance and more full value offspring for market. The ability to predict, in the prepubertal stage, the age that a replacement gilt would be expected to achieve puberty has great reproductive and economic advantages. This work focuses on identifying biological markers that are potentially predictive of age at puberty. Study 1 identified changes in the vaginal epithelium during gilt reproductive development. Pre-pubertal gilts (n =13) were followed from d70 of age until first …
"We Give Them The Most Important Thing Possible. We Give Their Dreary Lives Excitement”: Toward A Theoretical Model Of Narrative Parasocial Engagement, Dominic Delbert Meyers
"We Give Them The Most Important Thing Possible. We Give Their Dreary Lives Excitement”: Toward A Theoretical Model Of Narrative Parasocial Engagement, Dominic Delbert Meyers
Electronic Theses and Dissertations
Video game narratives and characters are some of the most enjoyable and persuasive components of the video game industry. While narratives and character relationships within video games have been examined separately, there is no working model and little research attempting to bridge the connection between narratives and character relationships. This research combines Narrative Paradigm Theory and Parasocial Relationships to understand how narratives and character relationships influence each other in video game environments. This was done through rhetorical field methods, utilizing a focus group and narrative rhetorical analysis on the transcript of the focus group. Results provide a working model coined …
Modeling Of Transport In Anatomic Respiratory Airways: Applications In Targeted Drug Delivery And Airborne Pathogenic Transmissions, Mohammad Mehedi Hasan Akash
Modeling Of Transport In Anatomic Respiratory Airways: Applications In Targeted Drug Delivery And Airborne Pathogenic Transmissions, Mohammad Mehedi Hasan Akash
Electronic Theses and Dissertations
This thesis aims to explore the potential of improving the efficacy of drugs for treatment of viral infections by targeting the nasopharynx, which is commonly the first site of infection for many viral pathogens. Currently, intranasal sprays are used, but the standard protocol (“Current Use” or CU) results in suboptimal drug deposition at the nasopharynx. To address this issue, an “Improved Use” or, IU protocol has been proposed, which involves pointing the spray bottle at a shallower angle and aiming slightly towards the cheeks. The IU delivery is also robust to perturbations in spray direction, which highlights the practical utility …
Understanding Human Gut Bacterial Interactions And Their Role In Colonization Resistance Against Clostridioides Difficile Using Mini-Bioreactor Array And Caenorhabditis Elegans As Model Systems, Achuthan Ambat
Electronic Theses and Dissertations
No abstract provided.
Fungicide Sensitivity In P. Tritici-Repentis Diverse Population And Phenotyping Of Spelt Wheat For Multiple Diseases, Zunera Shabbir
Fungicide Sensitivity In P. Tritici-Repentis Diverse Population And Phenotyping Of Spelt Wheat For Multiple Diseases, Zunera Shabbir
Electronic Theses and Dissertations
Pyraclostrobin, a QoI fungicide, is extensively used in the management of fungal leaf spot diseases. In this study, 215 P. tritici-repentis isolates collected from wheat fields in South Dakota were evaluated for their sensitivity to Pyraclostrobin. Of 215 isolates, 48 isolates (22%) exhibited insensitivity based on G143A mutation and EC50 values using spore germination assay. Our results indicate reduced sensitivity to insensitivity to pyraclostrobin in some isolates suggesting regular monitoring of the P. tritici-repentis population to QoI fungicides is essential to track the evolution of insensitive population. Spelt wheat (Triticum spelta L.) is an ancient cereal that is gaining small …
U.S. Consumers’ Willingness To Pay For Raised Carbon-Friendly Beef: Moderation Effect Of Information And Consumer Characteristics, Mariam Ishaq
Electronic Theses and Dissertations
No abstract provided.
Development Of Corn Kernel-Based Biocomposite Films For Food Packaging Applications, Swastika Bera
Development Of Corn Kernel-Based Biocomposite Films For Food Packaging Applications, Swastika Bera
Electronic Theses and Dissertations
Most of the current and active food packaging resources and methods are nonbiodegradable and nonrenewable therefore harmful to the environment. Due to this, alternate sources of food packaging materials are in high demand. In this study, a bio-composite film has been developed, with Corn kernel powder as fiber reinforcement which is mixed with gelatin, and lignin two biopolymers as the matrix. The effect of Corn Kernel (CK) reinforcement on the Gelatin/Lignin (G/L) matrix on mechanical and barrier properties has been studied. CK has shown great potential as reinforcement to natural polymer, gelatin, and lignin (G/L) for food packaging applications as …
Effects Of Dietary Genistein And Fugacity Modelling In An Aquaculture System, Travis Schaeffer
Effects Of Dietary Genistein And Fugacity Modelling In An Aquaculture System, Travis Schaeffer
Electronic Theses and Dissertations
Fish production from aquaculture has continued to grow over the past several decades, with finfishes being fed formulated, fish meal-based diets supporting most of that industry’s growth. However, increased demand and costs, coupled with static volume and erratic supplies of fish meal, has resulted in the use of alternative plant-derived protein sources. A common oilseed protein source is soybean meal (SBM), because of its protein content and amino acid profile; however, it also contains multiple anti-nutritional factors, including phytoestrogens. Phytoestrogens are naturally produced, estrogenmimicking compounds, with isoflavones receiving the most investigation as higher levels of these compounds occur within SBM. …
Identification And Quantification Of Novel Antimicrobials, Hazera Khatun Koly
Identification And Quantification Of Novel Antimicrobials, Hazera Khatun Koly
Electronic Theses and Dissertations
No abstract provided.
Efficacy Of A Typical Clean-In-Place Protocol Against In Vitro Membrane Biofilms, Diwakar Singh, Sanjeev Anand
Efficacy Of A Typical Clean-In-Place Protocol Against In Vitro Membrane Biofilms, Diwakar Singh, Sanjeev Anand
Dairy Science and Food Science Faculty Publications: 2022 to Present
This study evaluates the effectiveness of a typical clean-in-place (CIP) protocol against in vitro biofilms on whey reverse osmosis (RO) membranes developed under static condition. Bacterial isolates obtained from RO membrane biofilms were used to develop single and multispecies biofilms under laboratory conditions. A typical commercial CIP protocol was tested against the 24-h-old biofilms, and included 6 sequential treatment steps based on alkali, surfactant, acid, enzyme, a second surfactant, and a sanitizer treatment step. Experiments were conducted in 4 replicates and the data were statistically analyzed. The results revealed a variation in the resistance of mixed-species biofilms against the individual …
Analysis Of Per Capita Contributions From A Spatial Model Provides Strategies For Controlling Spread Of Invasive Carp, Donald R. Schoolmaster Jr., Alison A. Coulter, Jahn L. Kallis, Donald C. Glover, John M. Dettmers, Richard A. Erickson
Analysis Of Per Capita Contributions From A Spatial Model Provides Strategies For Controlling Spread Of Invasive Carp, Donald R. Schoolmaster Jr., Alison A. Coulter, Jahn L. Kallis, Donald C. Glover, John M. Dettmers, Richard A. Erickson
Natural Resource Management Faculty Publications
Metapopulation models may be applied to inform natural resource management to guide actions targeted at location-specific subpopulations. Model insights frequently help to understand which subpopulations to target and highlight the importance of connections among subpopulations. For example, managers often treat aquatic invasive species populations as discrete populations due to hydrological (e.g., lakes, pools formed by dams) or jurisdictional boundaries (e.g., river segments by country or jurisdictional units such as states or provinces). However, aquatic invasive species often have high rates of dispersion and migration among heterogenous locations, which complicates traditional metapopulation models and may not conform to management boundaries. Controlling …
Viewing Animal Migration Through A Social Lens, Ellen O. Aikens, Iris D. Bontekoe, Lara Blumenstiel, Anna Schlicksupp, Andrea Flick
Viewing Animal Migration Through A Social Lens, Ellen O. Aikens, Iris D. Bontekoe, Lara Blumenstiel, Anna Schlicksupp, Andrea Flick
Natural Resource Management Faculty Publications
Evidence of social learning is growing across the animal kingdom. Researchers have long hypothesized that social interactions play a key role in many animal migrations, but strong empirical support is scarce except in a few unique systems and species. In this review, we aim to catalyze advances in the study of social migrations by synthesizing research across disciplines and providing a framework for understanding when, how, and why social influences shape the decisions animals make during migration. Integrating research across the fields of social learning and migration ecology will advance our understanding of the complex behavioral phenomena of animal migration …
A Comparison Of Mini-Flotac And Mcmaster Techniques, Overdispersion And Prevalence Of Parasites In Naturally Infected North American Bison (Bison Bison) In The Usa, Wiliam L. Johnson, Samantha Reynolds, Colton L. Adkins, Bradly Wehus-Tow, Jameson R. Brennan, Catherine B. Krus, Danielle Buttke, Jeff M. Martin, Jeba R.J. Jesudoss Chelladurai
A Comparison Of Mini-Flotac And Mcmaster Techniques, Overdispersion And Prevalence Of Parasites In Naturally Infected North American Bison (Bison Bison) In The Usa, Wiliam L. Johnson, Samantha Reynolds, Colton L. Adkins, Bradly Wehus-Tow, Jameson R. Brennan, Catherine B. Krus, Danielle Buttke, Jeff M. Martin, Jeba R.J. Jesudoss Chelladurai
Natural Resource Management Faculty Publications
Several quantitative diagnostic techniques are available to estimate gastrointestinal parasite counts in the feces of ruminants. Comparing egg and oocyst magnitudes in naturally infected samples has been a recommended approach to rank fecal techniques. In this study, we compared the Mini-FLOTAC (sensitivity of 5 eggs per gram (EPG)/oocysts per gram (OPG)) and different averaged replicates of the modified McMaster techniques (sensitivity of 33.33 EPG/OPG) in 387 fecal samples from 10 herds of naturally infected North American bison in the Central Great Plains region of the USA. Both techniques were performed with fecal slurries homogenized in a fill-FLOTAC device. In the …
Animal Science News (October 28, 2022), Department Of Animal Science
Animal Science News (October 28, 2022), Department Of Animal Science
Animal Science Newsletters
No abstract provided.
Animal Science News (October 14, 2022), Department Of Animal Science
Animal Science News (October 14, 2022), Department Of Animal Science
Animal Science Newsletters
No abstract provided.
Impulse, Fall 2022, University Marketing And Communications, Jerome J. Lohr College Of Engineering
Impulse, Fall 2022, University Marketing And Communications, Jerome J. Lohr College Of Engineering
Impulse (Jerome J. Lohr College of Engineering Publication)
2 | Sanjeev Kumar Takes Helm as College’s 12th Dean
5 | College Develops Partnerships in India, Turkey
6 | Faculty News
8 | Aerofly — Profs, Alum Partner To Build Unique Drone
10 | Researchers Find Way to Extend Produce Shelf Life
12 | SDSU Claims National Title in Quarter-Scale Tractors
14 | Nation’s Top ASCE Chapter Housed at SDSU
16 | National Geo-Video Title Won By State Students
18 | Summer Brings Engineering Camps to Campus
20 | Haleigh Timmer — Money on the Court, In Classroom
22 | Daniel Burkhalter — Day in the Life of Student-Athlete …
Use Of Micellar Casein Concentrate And Milk Protein Concentrate Treated With Transglutaminase In Imitation Cheese Products—Unmelted Texture, Prafulla Salunke, Chenchaiah Marella, J. K. Amamcharla, K. Muthukumarappan, Lloyd Metzger
Use Of Micellar Casein Concentrate And Milk Protein Concentrate Treated With Transglutaminase In Imitation Cheese Products—Unmelted Texture, Prafulla Salunke, Chenchaiah Marella, J. K. Amamcharla, K. Muthukumarappan, Lloyd Metzger
Dairy Science and Food Science Faculty Publications: 2022 to Present
The amount of intact casein provided by dairy ingredients is a critical parameter in dairy-based imitation mozzarella cheese (IMC) formulation because it has a significant effect on unmelted textural parameters such as hardness. From a functionality perspective, rennet casein (RCN) is the preferred ingredient. Milk protein concentrate (MPC) and micellar casein concentrate (MCC) cannot provide the required functionality due to the higher steric stability of casein micelle. However, the use of transglutaminase (TGase) has the potential to modify the surface properties of MPC and MCC and may improve their functionality in IMC. The objective of this study was to determine …
Friends Of The Hilton M. Briggs Library Newsletter, Fall 2022, Hilton M. Briggs Library
Friends Of The Hilton M. Briggs Library Newsletter, Fall 2022, Hilton M. Briggs Library
Friends of the Hilton M. Briggs Library Newsletters
Features:
Keep on moving: ALA grant adds mobile tables and chairs
Cook-Lynn Papers strengthen SDSU Archives collections
Notes from the Dean of the Library
Wokini Knowledge Circle opens
Library hosts launch for book on Dakota ecology
Digital Library of South Dakota Collection: W. Carter Johnson Papers
Why Are Some Plant Species Missing From Restorations? A Diagnostic Tool For Temperate Grassland Ecosystems, Marcello De Vitis, Kayri Havens, Rebecca S. Barak, Louise Egerton-Warburton, Adrienne R. Ernst, Matt Evans, Jeremie B. Fant, Alicia J. Foxx, Kyndall Hadley, Jim Jabcon, Joan O’Shaughnessey, Sai Ramakrishna, David Sollenberger, Sophie Taddeo, Rafael Urbina-Casanova, Chris Woolridge, Lan Xu, Jacob Zeldin, Andrea T. Kramer
Why Are Some Plant Species Missing From Restorations? A Diagnostic Tool For Temperate Grassland Ecosystems, Marcello De Vitis, Kayri Havens, Rebecca S. Barak, Louise Egerton-Warburton, Adrienne R. Ernst, Matt Evans, Jeremie B. Fant, Alicia J. Foxx, Kyndall Hadley, Jim Jabcon, Joan O’Shaughnessey, Sai Ramakrishna, David Sollenberger, Sophie Taddeo, Rafael Urbina-Casanova, Chris Woolridge, Lan Xu, Jacob Zeldin, Andrea T. Kramer
Natural Resource Management Faculty Publications
The U.N. Decade on Ecosystem Restoration aims to accelerate actions to prevent, halt, and reverse the degradation of ecosystems, and re-establish ecosystem functioning and species diversity. The practice of ecological restoration has made great progress in recent decades, as has recognition of the importance of species diversity to maintaining the long-term stability and functioning of restored ecosystems. Restorations may also focus on specific species to fulfill needed functions, such as supporting dependent wildlife or mitigating extinction risk. Yet even in the most carefully planned and managed restoration, target species may fail to germinate, establish, or persist. To support the successful …
Industrial Energy Development Decouples Ungulate Migration From The Green Wave, Ellen O. Aikens, Teal B. Wyckoff, Hall Sawyer, Matthew J. Kauffman
Industrial Energy Development Decouples Ungulate Migration From The Green Wave, Ellen O. Aikens, Teal B. Wyckoff, Hall Sawyer, Matthew J. Kauffman
Natural Resource Management Faculty Publications
The ability to freely move across the landscape to track the emergence of nutritious spring green-up (termed ‘green-wave surfing’) is key to the foraging strategy of migratory ungulates. Across the vast landscapes traversed by many migratory herds, habitats are being altered by development with unknown consequences for surfing. Using a unique long-term tracking dataset, we found that when energy development occurs within mule deer (Odocoileus hemionus) migration corridors, migrating animals become decoupled from the green wave. During the early phases of a coalbed natural gas development, deer synchronized their movements with peak green-up. But faced with increasing disturbance …
Contributor Notes, Oakwood Staff
Cliff Senior; Myron, Cliff Taylor
Love In The Time Of Caldera, Todd Williams
The Museum Of Roadside Trash, Courtney Huse Wika
Gift Of Goats, Adam Luebke