Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (3819)
- Physical Sciences and Mathematics (2485)
- Social and Behavioral Sciences (2265)
- Engineering (1956)
- Medicine and Health Sciences (1950)
-
- Education (1405)
- Psychology (1175)
- Arts and Humanities (995)
- Biology (869)
- Chemistry (831)
- Biochemistry, Biophysics, and Structural Biology (665)
- Computer Sciences (428)
- Sociology (405)
- Biochemistry (383)
- Animal Sciences (368)
- Public Health (358)
- Biomedical Engineering and Bioengineering (355)
- Environmental Sciences (315)
- Electrical and Computer Engineering (304)
- Medical Sciences (300)
- Mechanical Engineering (273)
- Pharmacy and Pharmaceutical Sciences (273)
- Plant Sciences (264)
- Clinical Psychology (260)
- Civil and Environmental Engineering (255)
- Earth Sciences (248)
- Physiology (247)
- Ecology and Evolutionary Biology (236)
- Microbiology (234)
- Cell and Developmental Biology (224)
- Institution
-
- Virginia Commonwealth University (3245)
- University of North Dakota (3008)
- Brigham Young University (2820)
- Mississippi State University (2632)
- University of South Carolina (1840)
-
- Air Force Institute of Technology (922)
- Rowan University (757)
- University of Texas Rio Grande Valley (703)
- American University in Cairo (607)
- Illinois State University (590)
- Florida Institute of Technology (469)
- University of Arkansas Little Rock (449)
- Pepperdine University (402)
- City University of New York (CUNY) (378)
- St. John's University (327)
- Columbus State University (185)
- Nova Southeastern University (143)
- SASTRA Deemed to be University (103)
- Texas A&M International University (79)
- University for Business and Technology in Kosovo (54)
- UAlaska System (2)
- CentraCare Health (1)
- Louisiana Tech University (1)
- Southern Methodist University (1)
- Keyword
-
- Education (153)
- Cancer (150)
- Gender (134)
- Depression (119)
- Dissertations (PsyD) -- Psychology (109)
-
- Machine learning (109)
- North Dakota (104)
- Inflammation (85)
- Autism (82)
- Mental health (80)
- Biological sciences (79)
- Dissertations (EdD) -- Organizational leadership (77)
- Stress (77)
- Utah (74)
- Women (74)
- United States (71)
- Obesity (67)
- Nanoparticles (65)
- Ecology (63)
- Trauma (63)
- Anxiety (61)
- Leadership (61)
- Adolescents (60)
- Apoptosis (60)
- Mitochondria (57)
- Proteomics (56)
- Development (55)
- Behavior (54)
- Breast cancer (54)
- Machine Learning (54)
- Publication Year
- File Type
Articles 10471 - 10500 of 19718
Full-Text Articles in Entire DC Network
Towards A Genome Sequence Of The Brown Spot Needle Blight Pathogen (Mycosphaerella Dearnessii) Infecting Longleaf Pine, Benjamin Douglas Bartlett
Towards A Genome Sequence Of The Brown Spot Needle Blight Pathogen (Mycosphaerella Dearnessii) Infecting Longleaf Pine, Benjamin Douglas Bartlett
Theses and Dissertations
A major disease damaging seedlings of Pinus palustris is caused by the fungus Mycosphaerella dearnessii. Population structure of this pathogen was studied in a population in Mississippi. High genetic diversity (0.65) was measured using microsatellite markers and coincides with the high number of vegetative compatibly groups observed. A 30 Mb genome sequence for a single isolate of M. dearnessii was assembled, representing 65% of the estimated genome size. Nearly all (93%) of the core set of genes present in eukaryotes were detected from a total of 10,996 predicted genes. A total of 853 enzymatic associations were identified along with several …
Utilization Of Bioscreen To Calculate Retardation Factor Of Petroleum Contaminants, And Biodegradation Rate For A Site In Montpelier, Indiana, Brittany M. Garner
Utilization Of Bioscreen To Calculate Retardation Factor Of Petroleum Contaminants, And Biodegradation Rate For A Site In Montpelier, Indiana, Brittany M. Garner
Theses and Dissertations
In March 1994, a report was issued to the Indiana Department of Environmental Management after Jim Allen Maintenance, Inc. found levels of total petroleum hydrocarbons (TPH) exceeding the level appropriate for action (100 parts per million) during an underground storage tank closure report assessment. Creek Run L.L.C Environmental Engineering was contracted by Jay Petroleum to complete an initial site characterization. Through quarterly monitoring of benzene, toluene, ethyl benzene, and methyl tert-butyl ether for 11 years, Creek Run L.L.C determined that biodegradation was occurring. Upon using BIOSCREEN, a contaminant transport modeling software that simulates natural attenuation over time, it was determined …
Spatial Pattern Analysis Of Agricultural Soil Properties Using Gis, Corrin Jared Mccarn
Spatial Pattern Analysis Of Agricultural Soil Properties Using Gis, Corrin Jared Mccarn
Theses and Dissertations
Agricultural soil properties exhibit variation over field plot scales that can ultimately effect the yield. This study performs multiple spatial pattern analyses in order to design spatially dependent regression models to better understand the interaction between these soil properties. The Cation Exchange Capacity (CEC) and Calcium-Magnesium Ratio (CaMgR) are analyzed with respect to Calcium, Magnesium, and soil moisture values. The CEC and CaMgR are then used to determine impact on the yield values present for the field. Results of this study show a significant measure of model parsimony (0.979) for the Geographically Weighted Regression (GWR) model of the CEC with …
Synthesis And Catalytic Activity Of -Nhc Group 9 Metal Pincer Complexes, Sean William Reilly
Synthesis And Catalytic Activity Of -Nhc Group 9 Metal Pincer Complexes, Sean William Reilly
Theses and Dissertations
N-Heterocyclic carbenes (NHCs) are one of the few ligand systems that can finely tune transition metal catalysts via sterics and electronics. The strong sigma-donating properties of these ancillary ligands allow the development of robust tridentate NHC pincer framework, which has emerged as an alternative to the phosphine pincer ligands. The combination of NHC and pincer systems has resulted in a new generation of catalytically active organometallic complexes reported throughout the literature. -NHC Rh pincer complexes were found to be catalytically active in C-C and C-B bond formation via 1,4dition reactions. In addition, the in-situ generated -NHC Ir(H) pincer complex demonstrated …
Influence Of Market Setting And Time Of Purchase On Counts Of Aerobic Bacteria, Escherichia Coli, And Coliform And Prevalence Of Salmonella And Listeria In Beef, Pork, And Chicken In Vietnam, April Kathleen Mccain
Influence Of Market Setting And Time Of Purchase On Counts Of Aerobic Bacteria, Escherichia Coli, And Coliform And Prevalence Of Salmonella And Listeria In Beef, Pork, And Chicken In Vietnam, April Kathleen Mccain
Theses and Dissertations
The objective of this study was to determine the influence of market type and sampling time on Salmonella and Listeria prevalence and microbiological quality of 540 beef, pork, and whole chicken samples collected in 6 supermarkets (SM), 6 indoor markets (IM), and 6 open markets (OM) at opening (T0) and 4 h after the opening (T4) in Vietnam. Salmonella and Listeria prevalence ranged from 30.4 to 71.0% and 56.6 to 99.9 %, respectively, in beef, pork, and chicken in Vietnam. Aerobic bacteria counts ranged from 10.5 to 11.6 log CFU/g, whereas, E. coli and coliform counts ranged from 7.2 to …
Investigating Phylogenetic Relationships Of Mosquito-Borne Avian Malaria In Mississippi, David Alan Larson
Investigating Phylogenetic Relationships Of Mosquito-Borne Avian Malaria In Mississippi, David Alan Larson
Theses and Dissertations
The vectors of avian malaria (Haemosporida) are an understudied component of wildlife disease ecology. Most studies of avian malaria have focused on the secondary bird hosts. This imbalance leaves a significant gap in our knowledge and understanding of the insect hosts. This study investigates the diversity of malaria parasites carried by mosquitoes (Diptera, Culicidae) in the state of Mississippi. Using PCR techniques, haemosporidian infection rates were determined and parasites were identified in a phylogenetic context to those previously annotated. A total of 27,157 female mosquitoes representing 15 species were captured. Five of those species tested positive for malaria parasites with …
Malaria Parasitemia And Prevalence In The Tufted Titmouse (Baeolophus Bicolor), Kayla Marie Fast
Malaria Parasitemia And Prevalence In The Tufted Titmouse (Baeolophus Bicolor), Kayla Marie Fast
Theses and Dissertations
Haemosporidians, including the avian malaria parasites, are a diverse group of blood parasites that infect terrestrial vertebrates worldwide. There is variability in parasite prevalence (presence) and parasitemia (infection intensity); infections range from virtually inconsequential to lethal. Prevalence and parasitemia of avian malaria in the Tufted Titmouse (Baeolophus bicolor) were determined (n=81). The genera Plasmodium and Parahaemoproteus were detected and quantified from bird blood using microscopy, polymerase chain reaction (PCR), and quantitative PCR (qPCR). Thirteen lineages of malaria parasites were found. Sequence data from the parasite’s mitochondrial cytochrome b gene indicate that prevalence is 69.1% (Plasmodium-89.3%; Parahaemoprotues-7.1%; double infection-3.6%). Parasitemia was …
Modeling Susceptibility Of Forests To Hurricane Damage Based On Forest Ownership, Age, And Type, Rida Sadeq Sherif
Modeling Susceptibility Of Forests To Hurricane Damage Based On Forest Ownership, Age, And Type, Rida Sadeq Sherif
Theses and Dissertations
This study examined the severity of wind damage created by Hurricane Katrina in southeast Mississippi to determine how the disturbance was influenced by fragmentation based on different forest ownership groups (Non-corporate private forest, corporate private forest and public forest). MODIS-NDVI percent change products were coupled with ownership, rainfall, and Landsat based thematic maps depicting forest age and forest types using GIS techniques to examine potential contributing factors to possible damage for the study area. Multiple linear and binary logistic regression methods were used to explain the relationship between severity of damage and forest age, forest type, ownership, and rainfall. Results …
Identification Of Purpurogallin In Brewed Beverages And Effect Of Roasting On Antioxidant Activity And Phenolic Compounds In Coffees, Yu-Chen Liao
Theses and Dissertations
Coffee contains many antioxidants including purpurogallin, which is a hydrophobic phenolic antioxidant that is difficult to measure with reported methods. A method combining solid-phase extraction and liquid chromatography–mass spectrometry was developed to detect and quantify purpurogallin in brewed beverages, including coffee. For beverage preparation, water extraction was adopted for improved correlation with moka pot brewing. Purpurogallin was detected in all commercial coffee samples, and its content in ground coffees ranged from 455-630 ng/g dry weight. Purpurogallin was only detected in two English breakfast tea samples (335-360 ng/g dry weight) and was not detected in any cocoa sample. Antioxidant activity, total …
Impact Of Corn Earworm On Field Corn Yield And Grain Quality, Jenny Lee Bibb
Impact Of Corn Earworm On Field Corn Yield And Grain Quality, Jenny Lee Bibb
Theses and Dissertations
Field corn, Zea mays L., has been introduced to the market with pyramided Bacillus thuringiensis (Bt) corn technologies. These technologies reduce kernel damage from ear feeding caterpillar pests, including corn earworm, Helicoverpa zea (Boddie). The first generation Bt traits in field corn demonstrated limited activity on corn earworm feeding on grain in ears. The pyramided corn technologies have greater cumulative protein concentrations and improved expression throughout the plant, so these corn traits should provide an effective management tool against these pests. In addition, reduced kernel injury may also have a direct effect on physical grain quality. The results for this …
Evaluation Of Initial Body Weight And Supplementation Levels On Health And Performance Of Newly Received Stocker Calves, William Corey Wilkins
Evaluation Of Initial Body Weight And Supplementation Levels On Health And Performance Of Newly Received Stocker Calves, William Corey Wilkins
Theses and Dissertations
These study objectives were to evaluate the effects of: initial bodyweight, energy supplementation, distance and days traveled and hair coat shedding on performance and health. Crossbred heifers (n=120) were purchased as either lightweight (136 kg) or heavyweight (226 kg) calves. Factors affecting morbidity and growth were tested using Poisson or linear regression (PROC GLIMMIX), with a correlation structure defining clustering by pen. Incidence density was 53.7/103 calf-days and 19.0/103 calf-days for light and heavy initial BW, respectively. Lightweight calves were 2.8 times more likely to be treated for BRD (p=0.02) and each increase in hair shed score increased risk for …
Examination Of The Effects Of Vitamin D Supplementation On The In Vitro Calcification Of Vascular Smooth Muscle Cells, Kevin Andrew Bennett
Examination Of The Effects Of Vitamin D Supplementation On The In Vitro Calcification Of Vascular Smooth Muscle Cells, Kevin Andrew Bennett
Theses and Dissertations
Medial calcification refers to mineral deposition in the middle layer of arteries. This mineralization is common in chronic kidney disease patients and causes an increased chance of cardiovascular complications. Calcitriol, the active form of vitamin D, is often administered to these patients to treat an associated condition, secondary hyperparathyroidism. Unfortunately, calcitriol treatment may promote vascular calcification due to increasing serum calcium and phosphate. We examined the effects of calcitriol supplementation on vascular smooth muscle cell (VSMC) calcification, through atomic absorption, scanning electron microscopy, and western blot analysis. Additionally, we examined the effects of the combinations of calcitriol, fibroblast growth factor …
Examining The Relationships Between Violent Media Programming, Aggression And Prosocial Behaviors Among Black College Students, Jamie Michelle Williams
Examining The Relationships Between Violent Media Programming, Aggression And Prosocial Behaviors Among Black College Students, Jamie Michelle Williams
Theses and Dissertations
The purpose of this study was to examine the relationship between violent media programming, aggression and prosocial behaviors among Black college students. The study included 108 Black college students from a historically Black college/university on the East Coast. The researcher evaluated the participants’ aggression using Buss & Warren’s (2000) Aggression Questionnaire and evaluated the participants’ prosocial behaviors using Penner’s (1995) prosocial personality battery. The researcher then used an independent samples t-test to analyze the data and test the hypothesis that a relationship between the variables exists. Furthermore, the researcher employed discriminant analysis to determine if group membership could be predicted, …
Time To Career: Science And Engineering Education To Career Trajectories, Angie Nim Choi
Time To Career: Science And Engineering Education To Career Trajectories, Angie Nim Choi
Theses and Dissertations
Two waves of data from the 2006 and 2008 Survey of Earned Doctorates and Survey of Doctorate Recipients were used in this study to investigate time to doctorate (TTD) and time to career (TTC) for science and engineering PhDs. Three-way factorial ANOVAs were conducted, and TTD results indicated main effects for gender, US citizenship, and Biglan classification, and interaction effects for gender and US citizenship. US citizen PhDs progressed to their career approximately one mean year faster than foreign PhDs. For TTC, PhDs who held postdocs progressed to their careers in 14 and 15 years for females and males respectively …
Pthrp(12-48) A New Player In Breast Cancer Bone Metastasis, Charity Leah Washam
Pthrp(12-48) A New Player In Breast Cancer Bone Metastasis, Charity Leah Washam
Theses and Dissertations
Bone metastasis is a common complication of breast cancer that significantly compromises patient survival due, in part, to the advanced stage of disease at time of detection. Early detection is key to patient survival, however, despite intense investigation in both the metastatic and early breast cancer setting there are currently no high performance biomarkers that can identify or predict the development of bone metastasis. In order to improve patient outcomes new diagnostic tools that can detect skeletal lesions in their earliest stages of development and/or identify patients at risk for developing bone metastases that may benefit from adjuvant anti-resorptive treatment …
Construction Of Class I Hla-Binding Peptidome, Heng Luo
Construction Of Class I Hla-Binding Peptidome, Heng Luo
Theses and Dissertations
The human leukocyte antigens (HLAs) can capture endogenous or exogenous peptides and set up a cascade which results in immune activation to fight a pathogen or sometimes to trigger autoimmune diseases or adverse drug reactions. Understanding HLA-peptide binding is essential for the development of vaccines and protein therapies, the identification of methods to prevent autoimmune diseases and the prediction of adverse drug reactions. Using an in silico approach we generated a 9-mer peptidome for Class I HLAs from the human proteome and harvested experimental HLA-peptide binding data from a variety of databases. Unfortunately, many peptides in the peptidome do not …
Applications Of Structure Based Drug Design To Generate High Affinity Anti-Methamphetamine Immunotherapy And To Identify Novel Inhibitors Of Lox-1 To Treat Atherosclerosis, Shraddha Thakkar
Theses and Dissertations
Computer-aided rational drug design is one of the most promising approaches for the development of effective drug therapies. This dissertation describes applications of rational structure-based techniques in two cases. In the first study, we enhanced the potency of a therapeutic antibody against methamphetamine. In the second study we identified potentially therapeutic molecules to treat atherosclerosis. Methamphetamine abuse is a serious health hazard and a single chain variable fragment (scFv) of a therapeutic anti-METH antibody has been developed at this University. Anti-METH immunotherapy blocks or reduces the rate of METH entry into the brain. In this research we introduced rationally designed …
Silicon Nitride Interfacial Layer Effect On Gallium Nitride Nanorod Growth, Filiz Keles
Silicon Nitride Interfacial Layer Effect On Gallium Nitride Nanorod Growth, Filiz Keles
Theses and Dissertations
Gallium nitride (GaN) nanorods have been grown on Silicon substrate by plasma-assisted molecular beam epitaxy (PAMBE). An amorphous and inhomogeneous interfacial silicon nitride (SixNy) layer is unintentionally formed at the initial stage of the GaN growth due to the high affinity between Si and N. The GaN cluster formation on uncontrolled SixNy layer occurs not only tilted but also defect-included such as stacking faults and threading dislocations. These defects mostly would be kept and carried throughout the growth. In this work, we studied the effect of crystal properties of SixNy layer on GaN nanorod quality by varying the nitridation parameters …
Specialized Replication Operons Control Rhizobial Plasmid Copy Number In Developing Symbiotic Cells, Clarice Lorraine Perry
Specialized Replication Operons Control Rhizobial Plasmid Copy Number In Developing Symbiotic Cells, Clarice Lorraine Perry
Theses and Dissertations
The rhizobium – legume symbiosis is a complex process that involves genetic cooperation from both bacteria and plants. Previously, our lab described naturally occurring accessory plasmids in rhizobia that inhibit this cooperation. A transposon mutagenesis was performed on the plasmids to detect the genetic factor that blocked nitrogen fixation. Several of the plasmids were found to possess a replication operon that when disrupted by transposon insertion, restored symbiotic function. This study describes an in-depth investigation into one of those plasmids, pHRC377, and into its replication operon. The operon, which we have called repA2C2, comes from the repABC family of …
Control Of Alternaria Solani Resistance To Boscalid, Fluopyram, And Chlorothalonil, Andrew K. Hollingshead
Control Of Alternaria Solani Resistance To Boscalid, Fluopyram, And Chlorothalonil, Andrew K. Hollingshead
Theses and Dissertations
Alternaria solani, cause of early blight, threatens potato yields. Fungicide resistance has made control of early blight difficult and there are concerns that in-season fungicide use results in resistance to boscalid, fluopyram, and chlorothalonil. Concern of high levels of resistance to boscalid a group 7 fungicide may confer cross-resistance to fungicides of the same group such as fluopyram. From 2014 to 2015, A. solani isolates were collected from field plots treated with boscalid, fluopyram, and chlorothalonil to test resistance levels. Isolates were determined resistant if EC50 values were higher than 5 µg ml-1. Boscalid and chlorothalonil mean EC50 values decreased …
The Role Of Stress In Hypersexual Behavior, Randy Gilliland
The Role Of Stress In Hypersexual Behavior, Randy Gilliland
Theses and Dissertations
The proposed diagnostic criteria for Hypersexual Disorder included "[r]epetitively engaging in sexual fantasies, urges, or behaviors in response to stressful life events" (Kafka, 2010, p.279) as a symptom, although no data demonstrates a causal relationship between stress and hypersexual behavior. We sought to confirm previous findings while furthering the field's understanding of this relationship by being the first study to assess stress and hypersexual behavior across multiple time points. Specifically, we sought to test three hypotheses within a sample of men seeking treatment for hypersexual behavior: 1) hypersexual individuals report higher stress levels than published norm samples; 2) stress predicts …
What A Dream Was Here: An Ontological Approach To Love And Magic In Shakespeare’S A Midsummer Night’S Dream, Brittany May Rebarchik
What A Dream Was Here: An Ontological Approach To Love And Magic In Shakespeare’S A Midsummer Night’S Dream, Brittany May Rebarchik
Theses and Dissertations
This paper takes Heidegger’s notion of world disclosure and uses it for extended thematic analyses of A Midsummer Night’s Dream. In contrast to the majority of Shakespeare critics who treat Shakespeare’s use of magic as an epistemological issue, I argue that the main action of the play develops through an inherent contradiction between the magical and non-magical ontological states of the characters and the love that results. Borrowing from German philosopher Martin Heidegger, I demonstrate magic’s role as a catalyst in giving certain kinds of love a “shift of existence.” I show that the characters come more fully into being, …
Tailoring Student Learning: Inquiry-Based Learning In The Elementary Art Classroom, Jeffrey Melvin Cornwall
Tailoring Student Learning: Inquiry-Based Learning In The Elementary Art Classroom, Jeffrey Melvin Cornwall
Theses and Dissertations
This research study explored the role of the elementary art educator in facilitating individualized learning experiences for students in contrast to a standardized culture of education. The methodology of a/r/tography was used to investigate the role of the teacher, as well as artist and researcher, within an inquiry-based art curriculum for a fifth grade class. Inspired by contemporary art practices, students used inquiry to investigate, research and experiment with their ideas around an integrated topic of compare and contrast as found within the fifth grade science and language arts standards. Students created a work of art as a means to …
Calcium Signaling And Ca2+/Calmodulin-Dependent Kinase Ii Activity In Epithelial To Mesenchymal Transition, Melissa Ann Mcneil
Calcium Signaling And Ca2+/Calmodulin-Dependent Kinase Ii Activity In Epithelial To Mesenchymal Transition, Melissa Ann Mcneil
Theses and Dissertations
Epithelial to mesenchymal transition (EMT) is an important process in embryonic development, tissue repair, inflammation, and cancer. During EMT, epithelial cells disassemble cell-cell adhesions, lose apicobasal polarity, and initiate migratory and invasive processes that allow individual cells to colonize distant sites. It is the means by which non-invasive tumors progress into malignant, metastatic carcinomas. In vitro, EMT occurs in two steps. First, cells spread out, increasing in surface area and pushing the colony borders out. Then cells contract, pulling away from neighboring cells and rupturing cell-cell junctions, resulting in individual highly migratory cells. Recent discoveries indicate that calcium signaling is …
Computational Analysis Of The Sir Mathematical Model For The Dengue Fever, Joseph Phillip Diaz
Computational Analysis Of The Sir Mathematical Model For The Dengue Fever, Joseph Phillip Diaz
Theses and Dissertations
Dengue fever is a disease affecting people in more than 100 countries. Here we consider a host and vector model for the transmission of dengue fever. This SIR model consists of three compartments of susceptible, infective and removed for host (human) and two compartments of susceptible and infective for vector (dengue mosquitos). These five compartments yield five coupled nonlinear ordinary differential equations (ODEs). After non-dimensionalization, we have a system of three nonlinear ODEs. Reproductive number and two equilibrium points are calculated for various cases. Simulation is carried out for susceptible, infective and removed and the results are presented in graphical …
Effects Of Shrub Encroachment And Removal On South Texas Coastal Prairie Flora, Parker Alex Watson
Effects Of Shrub Encroachment And Removal On South Texas Coastal Prairie Flora, Parker Alex Watson
Theses and Dissertations
Watson, Parker Alex, Effects of shrub encroachment and removal on South Texas coastal prairie flora. Master of Science, December, 2015. 60 pages, 14 tables, 11 figures, 47 references, 5 appendices. Native-invasive honey mesquite (Prosopis glandulosa) and huisache (Acacia farnesiana) are aggressively encroaching onto South Texas coastal prairies, outcompeting Gulf cordgrass (Spartina spartinae) and associated prairie vegetation with potential legacy effects on the landscape. To measure conditions in the presence of shrubs, data loggers were installed for 16 mos in shrub understories and grass cover to monitor light, soil and air temperatures. Vegetation and canopy surveys were also conducted to evaluate …
Third Ventricle Width As A Metric For Fast And Efficient Detection Of Atrophy In Traumatic Brain Injury, Christopher Scott Finuf
Third Ventricle Width As A Metric For Fast And Efficient Detection Of Atrophy In Traumatic Brain Injury, Christopher Scott Finuf
Theses and Dissertations
In an average year more than 1.7 million people will experience a traumatic brain injury (TBI) in the United States. It is known that atrophy occurs across a spectrum for TBI patients, ranging from mild to severe. Current conventional magnetic resonance imaging (MRI) methods are inconsistent in detecting this atrophy on the milder end of the spectrum. Also more contemporary imaging tools, although efficient, are too time consuming for clinical applicability. It is for these reasons that a quick and efficient measurement for detecting this atrophy is needed by clinicians. The measuring of third ventricle width had the potential to …
Evidence Of Ancient Maya Agriculture In The Bajos Surrounding Tikal, Guatemala, Adam Calvin Parker
Evidence Of Ancient Maya Agriculture In The Bajos Surrounding Tikal, Guatemala, Adam Calvin Parker
Theses and Dissertations
Current Central American agricultural practices are environmentally and economically unsustainable, yet the ancient Maya who lived in the same region thrived for thousands of years. Archaeologists have attempted to understand the factors enabling the prolonged success and ultimate collapse of the Maya societies. Some have proposed that the karst seasonal wetlands, called bajos, that border many Maya sites in the region were an influential factor in the Maya's ability to flourish. For the past decade, researchers have used carbon isotope analyses to identify areas of ancient maize agriculture at Maya archaeological sites. In this study, we collected soil samples from …
Stochastic Simulation Of Lagrangian Particle Transport In Turbulent Flows, Guangyuan Sun
Stochastic Simulation Of Lagrangian Particle Transport In Turbulent Flows, Guangyuan Sun
Theses and Dissertations
This dissertation presents the development and validation of the One Dimensional Turbulence (ODT) multiphase model in the Lagrangian reference frame. ODT is a stochastic model that captures the full range of length and time scales and provides statistical information on fine-scale turbulent-particle mixing and transport at low computational cost. The flow evolution is governed by a deterministic solution of the viscous processes and a stochastic representation of advection through stochastic domain mapping processes. The three algorithms for Lagrangian particle transport are presented within the context of the ODT approach. The Type-I and -C models consider the particle-eddy interaction as instantaneous …
“I Take--No Less Than Skies”: Emily Dickinson And Nineteenth-Century Meteorology, Kjerstin Evans Ballard
“I Take--No Less Than Skies”: Emily Dickinson And Nineteenth-Century Meteorology, Kjerstin Evans Ballard
Theses and Dissertations
Emily Dickinson's poetry functions where scientific attention to the physical world and abstract theorizing about the ineffable intersect. Critics who emphasize the poet's dedication to the scientific often take for granted how deeply the uncertainty that underlies all of Dickinson's poetry opposes scientific discussion of the day. Meteorology is an exceptional nineteenth-century science because it takes as its subject complex systems which are inexplicable in Newtonian terms. As such, meteorology can articulate the ways that Dickinson bridges the divide between the unknown and the known, particularly as she relates to the interplay of nature and culture, the role of careful …