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Full-Text Articles in Life Sciences
Evaluation Of Crumb Rubber Dynamics For Improving Athletic Field Quality, Kyley Hampton Dickson
Evaluation Of Crumb Rubber Dynamics For Improving Athletic Field Quality, Kyley Hampton Dickson
Masters Theses
Crumb rubber (CR) is an amendment used to reduce surface hardness and increase wear-tolerance on athletic fields. Turf managers can topdress CR particles into highly trafficked portions of athletic fields; however, optimum particle size and topdressing depth combinations for use on bermudagrass (Cynodon spp) athletic fields have not been determined. Optimum CR particle size and depth to maximize performance of hybrid bermudagrass (C. dactylon (L.) Pers. x C. transvaalensis Burtt-Davy, 'Tifway') athletic field turf established on a Sequatchie silt loam soil was investigated at the University of Tennessee Center for Athletic Field Safety (Knoxville, TN) in 2011 and …
Evaluating Pollination Ecology Of The Endangered Pityopsis Ruthii (Small) Small (Asteraceae), Philip Anthony Moore
Evaluating Pollination Ecology Of The Endangered Pityopsis Ruthii (Small) Small (Asteraceae), Philip Anthony Moore
Masters Theses
Pityopsis ruthii (Small) Small, also known as Ruth’s golden aster, is a federally endangered herbaceous perennial, endemic to two river systems, the Hiwassee and the Ocoee, within the Cherokee National Forest, Polk County, Tennessee. There are approximately 13,000 individuals that may be at high risk of short-term extirpation (Thompson and Schwartz, 2006). Little is known of the basic reproduction and life history of P. ruthii. Clebesh and Sloan (1993), Cruzan (2001), Park (1998), and Wadl et al. (2014) found evidence that seed production and seed viability are highly variable. Clebesh and Sloan (1993) indicated that pollinator visitation was highly temporal …
Synthetic Turf Surface Temperature Reduction And Performance Characteristics As Affected By Calcined Clay Modified Infill, Eric Hall Reasor
Synthetic Turf Surface Temperature Reduction And Performance Characteristics As Affected By Calcined Clay Modified Infill, Eric Hall Reasor
Masters Theses
Synthetic turf research plots containing crumb rubber (CR) infill were established in Knoxville, TN in 2012 and 2013. Calcined clay (CC) was amended to CR in several ratios: a 50:50 (vol vol-1) blend; a 50:50 blend with a polymer coating on CC (50 CR:50 CCC); a 15 mm layer of CC under 15 mm of CR (CR over CC); and a 15 mm layer of CC over 15 mm of CR (CC over CR). A 100% CR and a 70:30 blend of CR to sand (70 CR:30 S) were included for comparison. Surface temperature was measured in the summer of …
Do Plants Play A Part In Student Satisfaction?, Amanda Diane Plante
Do Plants Play A Part In Student Satisfaction?, Amanda Diane Plante
Masters Theses
Environmental psychologists have found relationships between plants, nature and satisfaction. Student satisfaction is important across grade levels. Two studies were conducted to determine the effect of spending time with live plants on student satisfaction and academic performance. In the first study, a quasi-experimental nonequivalent control group design was used to determine how participation in garden labs would affect high school student satisfaction with school and academic performance. Ecology students in the variable group participated in ten gardening labs during the semester. During labs, students did hands-on gardening activities in the school greenhouse and garden. Students in the variable and control …