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Articles 1 - 30 of 35
Full-Text Articles in Life Sciences
The Malawi Project: From Conventional To Holistic Decision Making, Grace Wetmore
The Malawi Project: From Conventional To Holistic Decision Making, Grace Wetmore
Animal Science
How the Cal Poly Malawi Appropriate Technologies Team, and other development groups, can use Holistic Management to aid developing countries in an effort towards a sustainable future.
Evaluation Of Best Management Practices To Reduce Nutrients Runoff In Watersheds In Arkansas, Hector German Rodriguez Diaz
Evaluation Of Best Management Practices To Reduce Nutrients Runoff In Watersheds In Arkansas, Hector German Rodriguez Diaz
Graduate Theses and Dissertations
There are many non point sources (NPS) of pollution issues across the state of Arkansas. Each region of the state has different concerns. Many watersheds have been included in the Arkansas's 2008 303(d) list for NPS impairments with sediment and nutrients being the primary causes of concern. This research hypothesized that there are no cost or net returns risks when adopting best management practices (BMPs) to control nutrients runoff and that selection, timing, placement and cost have no impact on the implementation of BMPs. Using two priority watersheds, the L'Anguille River and the Lincoln Lake, as examples, the environmental benefits …
Sport As A Vehicle For Socialization And Maintenance Of Cultural Identity: International Students Attending American Universities, James Taylor Allen
Sport As A Vehicle For Socialization And Maintenance Of Cultural Identity: International Students Attending American Universities, James Taylor Allen
Dissertations
Sport can be utilized by immigrants as a vehicle for maintaining cultural identity. Conversely, sport participation provides immigrants with opportunities for adopting an entirely new culture. Previous research also suggests that sport provides individuals with opportunities for attaining social capital. While this can be a beneficial situation for some, sport is also promoting elitism and serving as a powerful mechanism for exclusion. Globalization has led large numbers of foreign nationals to seek educational opportunities in the United States. Due to the increase in the number of international students and the lack of empirical studies, the need to study their participation …
The Effects Of Fire And Deer Herbivory On Oak Regeneration In An Eastern Deciduous Forest, Julie La Spina
The Effects Of Fire And Deer Herbivory On Oak Regeneration In An Eastern Deciduous Forest, Julie La Spina
Honors Theses
In the past, oak was one of the most dominant species groups in the deciduous forests of the northeastern United States. More recently, a variety of factors, including interspecific competition, fire suppression and deer herbivory, have led to the decline of oaks. We studied how oaks regenerate and grow following a major disturbance, and how their growth interacts with deer herbivory. We measured the growth of seedlings of three tree species following the 1,200 hectare Overlook Fire that occurred in Minnewaska State Park, NY in April 2008. At each of three sites, we measured the growth of twenty Quercus prinus, …
Perceptions About Rollersoccer Youth Programs, June Solomon
Perceptions About Rollersoccer Youth Programs, June Solomon
Master's Projects and Capstones
The purpose of this research was to investigate the demand for structured
RollerSoccer Youth Programs and to examine the perceptions about this type of
Program. The market for RollerSoccer is untapped and unrepresented in the
world of sports. To date, there are no articles about the development of
RollerSoccer Youth Programs or scholarly work on marketing the emerging sport
of RollerSoccer. The RollerSoccer International Federation (RSIF), the governing
body for this fast‐paced, high scoring hybrid sport aims to expand its reach to
youth in diverse communities by developing this sports initiative.
Three hundred and ten youth participants from selected schools …
Measuring Patient Satisfaction After Providing A Choice Of Nourishment Options Between Meals In A Long-Term Care Setting., Samantha Hutson
Measuring Patient Satisfaction After Providing A Choice Of Nourishment Options Between Meals In A Long-Term Care Setting., Samantha Hutson
Electronic Theses and Dissertations
The purpose of this study was to determine whether providing residents of the James H. Quillen Veterans Affairs Medical Center Community Living Center with a choice of nourishment options between meals would improve their satisfaction with the nourishment administration process. As opposed to being given the same nourishment item each day, residents were offered choices from a nourishment cart based upon their diet order. Sixteen residents completed the pre-survey, participated in the revised nourishment cart system for a 3-week period, and completed the postsurvey. Level of satisfaction was determined by analyzing the responses given by the residents on the pre- …
Visuospatial Reasoning In Toddlers: A Correlational Study Of Door Task Performance, Iris Louella Price
Visuospatial Reasoning In Toddlers: A Correlational Study Of Door Task Performance, Iris Louella Price
Open Access Dissertations
Previous research using violation-of-expectation paradigms suggests that very young infants have a good understanding of unobserved physical events. Yet toddlers appear to lack this knowledge when confronted with the door task, a visuospatial reasoning task which parallels ones used in the habituation/looking time studies. Many studies have been conducted in an effort to determine why toddlers perform poorly on the door task yet the answer remains unclear. The current study used a correlational approach to investigate door task performance from both psychological (executive function), and neuroscience (prefrontal cortex) perspectives. Children between the ages of 2 ½ - 3 years were …
The Effects Of Prenatal Exposure Of Valproic Acid On Cranial Nerve Nuclei: A Rat Model For An Autistic Phenotype, Shannon Pickup
The Effects Of Prenatal Exposure Of Valproic Acid On Cranial Nerve Nuclei: A Rat Model For An Autistic Phenotype, Shannon Pickup
Honors Capstone Projects - All
Autistic spectrum disorder is a term referring to five pervasive developmental disorders characterized by impairment in social interaction, deficits in verbal and non-verbal communication and stereotyped repetitive behaviors and interests. The underlying brain injury that leads to autism is also unknown. The cause is also unknown but appears to be a combination of genetic and environmental factors. A study on prenatal thalidomide exposure found patients exposure on days 20-24 of gestation lead to a 1/3 rate of autism, a huge increase from the 1/150 rate of the general population. The thalidomide data suggests the initial injury leading to autism occurs …
Effects Of Targeted Grazing And Prescribed Burning On Fire Behavior And Community Dynamics Of A Cheatgrass (Bromus Tectorum)-Dominated Landscape, Joel M. Diamond
Effects Of Targeted Grazing And Prescribed Burning On Fire Behavior And Community Dynamics Of A Cheatgrass (Bromus Tectorum)-Dominated Landscape, Joel M. Diamond
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Studies were conducted to determine the effectiveness of using targeted grazing and prescribed burning as tools to reduce fire hazards and cheatgrass (Bromus tectorum) dominance on rangelands in the northern Great Basin. A field study, with four grazing-burning treatments (graze and no-burn, graze and burn, no-graze and burn, and no-graze and no-burn), was conducted on a B. tectorum-dominated site near McDermitt, Nevada from 2005-2007. Cattle removed 80-90% of standing biomass in grazed plots in May 2005 and 2006 when B. tectorum was in the boot (phenological) stage. Grazed and ungrazed plots were burned in October 2005 and …
Microbial Growth Inhibition And Decomposition Of Milk Mineral And Sodium Tripolyphosphate Added To Media Or Fresh Ground Beef, Rossarin Tansawat
Microbial Growth Inhibition And Decomposition Of Milk Mineral And Sodium Tripolyphosphate Added To Media Or Fresh Ground Beef, Rossarin Tansawat
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Milk mineral (MM) is a type II antioxidant (metal chelator) that can bind iron and prevent iron catalysis of lipid oxidation. Thus, MM might have microbial growth inhibition effects on iron-dependent bacteria. Objective 1 was to evaluate effects of MM on growth of non-pathogenic iron-dependent bacterial strains (Listeria innocua, Eschericia coli, Pseudomonas fluorescens). MM (1.5 % w/v) did not significantly inhibit growth of Listeria and E. coli. However, growth of Pseudomonas fluorescens was consistently and significantly reduced by ~1 log colony forming units per ml (CFU/ml) with all levels of MM (0.5, 0.75, 1.5 % …
Consequences Of Vegetation Change On The Dynamics Of Labile Organic Matter And Soil Nitrogen Cycling In A Semiarid Ecosystem, Toby D. Hooker
Consequences Of Vegetation Change On The Dynamics Of Labile Organic Matter And Soil Nitrogen Cycling In A Semiarid Ecosystem, Toby D. Hooker
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Sagebrush-dominated ecosystems are being transformed by wildfire, rangeland improvement techniques, and exotic plant invasions. These disturbances have substantial effects on the composition and structure of native vegetation, but the effects on ecosystem C and N dynamics are poorly understood. To examine whether differences in dominant vegetation affect the quantity and quality of plant organic matter inputs to soil, ecosystem C and N pools and rates of plant turnover were compared among historically grazed Wyoming big sagebrush, introduced perennial crested wheatgrass, and invasive annual cheatgrass communities. Since low soil moisture during the summer may inhibit the microbial colonization of plant detrital …
Arid Climate Decomposition And Decay: A Taphonomic Study Using Swine, James William Munkres
Arid Climate Decomposition And Decay: A Taphonomic Study Using Swine, James William Munkres
UNLV Theses, Dissertations, Professional Papers, and Capstones
The present project analyzes the taphonomic processes and variables involved in the decomposition and desiccation of animal remains in an arid/hyper-arid environment. The study and the derived data will assist in determining postmortem intervals for remains in modern contexts, inform judgments made regarding mortuary habits and techniques in archaeological contexts, and will improve our knowledge regarding taphonomic processes. Manner of deposition, the depositional surface/medium and arid-climate specific variables (temperature, water, insect activity, weathering, pH levels, and soil characteristics) were examined in this study. Reported observations are limited to the first ten months following death from early December through early October …
The Effects Of Dolphin Education Programs On Visitors' Conservation-Related Knowledge, Attitude And Behavior, Lance Joseph Miller
The Effects Of Dolphin Education Programs On Visitors' Conservation-Related Knowledge, Attitude And Behavior, Lance Joseph Miller
Dissertations
Zoological institutions typically exhibit dolphins in educational programs such as dolphin shows and interaction programs. The goal of these programs is to entertain visitors while increasing their conservation-related knowledge, attitude and behavior towards dolphins and the marine environment. The purpose of the current study was to examine dolphin shows and interaction programs in terms of their effectiveness in meeting these goals. A multi-institutional study was conducted at six different facilities throughout the United States. A repeated measures design was used to examine the knowledge, attitude and behavior of visitors before, immediately after and three months following participation in dolphin shows …
Application Of Electrified Fladry To Decrease Risk Of Livestock Depredation By Wolves (Canis Lupus), Nathan J. Lance
Application Of Electrified Fladry To Decrease Risk Of Livestock Depredation By Wolves (Canis Lupus), Nathan J. Lance
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Wolf (Canis lupus) predation on livestock can cause economic and emotional hardships for livestock producers, complicating the balance of wolf conservation with other human interests. New management tools that decrease risk of predation may offer additional flexibility or efficiency for both livestock producers and management agencies. I examined 1) the efficacy of electrified fladry compared to fladry at protecting a food source from wolves in captivity, 2) the efficacy of electrified fladry for reducing wolf use of pastures and preventing depredations, and 3) the applicability of electrified-fladry. In captivity I tested the reaction from 15 groups (46 wolves) …
Taste Sensitivity To 6-N-Propylthiouracil (Prop) As A Biological Marker For Vulnerability To Stress In Mothers And Children, Deann Jones
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Some people are genetically more vulnerable to stress than others, leading them towards poorer outcomes following stressful events. Mothers' vulnerability to stress may, in turn, influence their children, leading their children towards poor outcomes as well. A biological marker of vulnerability to stress may indicate mothers who are at greater risk for experiencing parenting stress, depression, and less support of the infant's emotional development, and infants who are at greater risk for development of poor emotion regulation and behavior problems. Taste sensitivity to propylthiouracil (PROP) is proposed as a biological marker of stress vulnerability in mothers and children. This research …
A Bio-Optical Model For Syringodium Filiforme Canopies, Margaret A. Stoughton
A Bio-Optical Model For Syringodium Filiforme Canopies, Margaret A. Stoughton
OES Theses and Dissertations
Seagrasses are significant ecological and biogeochemical agents in shallow water ecosystems throughout the world. In many regions, seagrass meadows occupy a sufficient fraction of the coastal zone, and generate optical signatures that can be observed from space. Bio-optical models of light absorption and scattering by submerged plant canopies for certain species such as Thalassia testudinum and Zostera marina have successfully modeled the plane irradiance distribution and photosynthesis within the submerged canopies. Syringodium filiforme differs &om T. testudinttm and Z marina, in leaf morphology and canopy architecture. The objective of this study was to develop a radiative transfer model that …
Sentient Beings, Betsey Macdonald
Sentient Beings, Betsey Macdonald
Master's Theses, Dissertations, Graduate Research and Major Papers Overview
Twenty-two oil paintings focusing on the beauty and energy of animals and their suffering and death through slaughter. Includes artist's statement and bibliography.
Landscape Ecology Of Large Fires In Southwestern Forests, Usa, Sandra L Haire
Landscape Ecology Of Large Fires In Southwestern Forests, Usa, Sandra L Haire
Doctoral Dissertations 1896 - February 2014
The recent increase in large fires in southwestern forests has prompted concern regarding their ecological consequences. Recognizing the importance of spatial patterns in influencing successional processes, I asked: (1) How do large fires change plant communities?; (2) What are the implications of these changes for ponderosa pine forests?; and (3) What is the relationship of fire severity to gradients of climate, fuels, and topography? To address the first two questions, I studied succession in the woody plant community at two sites that burned in high-severity fire: La Mesa fire in northern New Mexico (1977) and Saddle Mountain in northern Arizona …
Temperature Influence And Heat Management Requirements Of Microalgae Cultivation In Photobioreactors, Thomas Hagen Mehlitz
Temperature Influence And Heat Management Requirements Of Microalgae Cultivation In Photobioreactors, Thomas Hagen Mehlitz
Master's Theses
Microalgae are considered one of the most promising feedstocks for biofuel production for the future. The most efficient way to produce vast amounts of algal biomass is the use of closed tubular photobioreactors (PBR). The heat requirement for a given system is a major concern since the best algae growth rates are obtained between 25-30 °C, depending on the specific strain. A procedure to determine temperature influence on algal growth rates was developed for a lab-scale PBR system using the species Chlorella. A maximum growth rate of 1.44 doublings per day at 29 °C (optimal temperature) was determined. In addition, …
School Lunch Programs And The American Diet: Exploring A Contested Food Terrain, Rebecca Som Castellano
School Lunch Programs And The American Diet: Exploring A Contested Food Terrain, Rebecca Som Castellano
University of Kentucky Master's Theses
This study examines the social actors and issues involved in constructing and contesting the National School Lunch Program (NSLP), in order to identify whose interests are involved in shaping an institution which transmits dietary habits and food knowledge to the nation’s children through the mid day meal.
For the historical analysis, I collected data from historical accounts of the NSLP, congressional hearings, laws, and newspaper articles. For the contemporary analysis, I interviewed 15 actors representing organizations key to federal NLSP policy making. To frame my analysis, I utilize a model of power, based on the work of Arts and Van …
Does Type Of Stimulus Influence Task-Irrelevant Evaluative Categorization Processes?, Guadalupe Corral
Does Type Of Stimulus Influence Task-Irrelevant Evaluative Categorization Processes?, Guadalupe Corral
Open Access Theses & Dissertations
The effect of stimulus type on task-irrelevant evaluative categorization was examined in two separate studies by using the P3 component from event-related brain potentials. The first study presented idiosyncratic stimuli consisting of individuals that were rated by participants as either positive or negative within sequences of pictorial and verbal stimuli. The second study presented sequences of novel and familiar stimuli consisting of previously normed unattractive and neutral individuals. It was hypothesized that pictures would elicit task-irrelevant evaluative categorization processes and so would novel stimuli (relative to words and familiar stimuli, respectively). Task-irrelevance was examined by assessing P3 peak amplitude to …
Characterization Of The Behavioral And Neurochemical Effects Of Nicotine Withdrawal In Adolescent And Adult Rats., Luis Alberto Natividad
Characterization Of The Behavioral And Neurochemical Effects Of Nicotine Withdrawal In Adolescent And Adult Rats., Luis Alberto Natividad
Open Access Theses & Dissertations
Previous studies have demonstrated that the behavioral effects of nicotine withdrawal are lower in adolescent versus adult rats. However, the neurochemical mechanisms that mediate these developmental differences are presently unclear. Much work has shown that nicotine reward is mediated via enhanced dopamine neurotransmission in the mesolimbic pathway which originates in the ventral tegmental area (VTA) and terminates in several forebrain structures including the nucleus accumbens (NAcc). More recently, studies have shown that nicotine withdrawal produces a decrease in NAcc dopamine transmission, an effect that is believed to serve as a neurochemical marker of withdrawal in adult rodents. The goal of …
Participation And Determinants Of Physical Activity Amongst Irish 3rd Level Students., Jonathan Lerner
Participation And Determinants Of Physical Activity Amongst Irish 3rd Level Students., Jonathan Lerner
Theses
Currently, there is a dearth of research investigating physical activity patterns among Irish third level young adults (17-22 year olds). Both national and international research report that levels of physical activity decline in adolescence, this trend being most pronounced among females. Various biological, psychological, social, and environmental determinants have been found to influence physical activity; however, specific factors associated with the decline in activity during adolescence remain largely unknown. This research study examines participation and determinants of physical activity among Irish third level students.
A “National questionnaire” was administered to a sample of 532 students from Health Education Authority (HEA) …
"The Coffee House (Where I Occasionally Sometimes Go)": Examining Diversity In The Urban Meat Diet Of Williamsburg In The Mid-Eighteenth Century, Kelsey J. Noack
"The Coffee House (Where I Occasionally Sometimes Go)": Examining Diversity In The Urban Meat Diet Of Williamsburg In The Mid-Eighteenth Century, Kelsey J. Noack
Dissertations, Theses, and Masters Projects
No abstract provided.
Blockade Of Muscarinic M1 Receptors Disrupts Performance On An Attention-Demanding Visual Discrimination Task, Andrea Maureen Robinson
Blockade Of Muscarinic M1 Receptors Disrupts Performance On An Attention-Demanding Visual Discrimination Task, Andrea Maureen Robinson
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Systemic And Intrabasalis Administration Of The Orexin-1 Receptor Antagonist, Sb-334867, On Attentional Performance In Rats, Karen Elizabeth Boschen
Effects Of Systemic And Intrabasalis Administration Of The Orexin-1 Receptor Antagonist, Sb-334867, On Attentional Performance In Rats, Karen Elizabeth Boschen
Dissertations, Theses, and Masters Projects
No abstract provided.
Geology And Wine In Missouri: Spatial Analysis Of Terroir Using A Geographic Information System And Remote Sensing, Kathryn Nora Barnard
Geology And Wine In Missouri: Spatial Analysis Of Terroir Using A Geographic Information System And Remote Sensing, Kathryn Nora Barnard
MSU Graduate Theses
The concept of terroir, based on the French word meaning 'sense of place,' suggests that flavor and quality of wine is associated with certain physical characteristics of the earth as well as viticulture and viniculture practices. The physical characteristics of terroir include soil, geology, topography, and climate. Designated American Viticultural Areas (AVAs) are discrete appellations in the United States that have well-established and historic viticultural practices, but the relationship between terroir and AVA appellations is complex. Wineries are a growing industry in the United States and the use of a GIS and remote sensing has proved useful in many other …
Does Humor Benefit Health In Retirement?: Exploring Humor As A Moderator, Gillian P. Freeman
Does Humor Benefit Health In Retirement?: Exploring Humor As A Moderator, Gillian P. Freeman
Dissertations, Theses, and Masters Projects
No abstract provided.
“In The System:” A Qualitative Study Of African-American Women’S Foster Care Stories, Meghan Spell
“In The System:” A Qualitative Study Of African-American Women’S Foster Care Stories, Meghan Spell
Honors Theses
No abstract provided.
The Influence Of Familism On Descriptive And Injunctive Norms In Predicting The Intention To Eat A Vegetarian Diet Among Chinese Seventh-Day Adventists, See Wei Toh
Loma Linda University Electronic Theses, Dissertations & Projects
According to the theory of planned behavior (TpB), one determinant of intention to engage in a behavior is the subjective norm. Various studies have found that subjective norm is often the weaker predictor of intention compared to perceived behavioral control and attitude. This study examined whether familism (emphasis on the family rather than the individual) would contribute positively to the predictive power of the TpB model through interactions with the family portion of descriptive and injunctive norms. Descriptive and injunctive norms are component variables of the subjective norm. A sample of 284 adult Chinese Seventh-day Adventists 18 years and older …