Publications by authors named "C A Crenshaw"

Article Synopsis
  • Trophic-level material and energy transfers are crucial in ecology, and isotopic tracers help measure how nutrients move through food webs.
  • In a study of thirteen N-ammonium tracer addition experiments in headwater streams, it was found that nitrogen transfer efficiency was lower from primary producers to primary consumers (average 11.5%) compared to primary consumers to predators (average 80%).
  • The study concluded that factors like canopy cover significantly impact nitrogen movement in streams, influencing light availability and primary production which in turn affects nutrient transfer to higher trophic levels.
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As part of an effort to identify substrate analogs suitable for helping to resolve structural features important for terpene synthases, the inhibition of 5-epi-aristolochene biosynthesis from farnesyl diphosphate (FPP) by the tobacco 5-epi-aristolochene synthase incubated with anilinogeranyl diphosphate (AGPP) was examined. The apparent noncompetitive nature of the inhibition supported further assessment of how AGPP might be bound to crystallographic forms of the enzyme. Surprisingly, the bound form of the inhibitor appeared to have undergone a cyclization event consistent with the native mechanism associated with FPP catalysis.

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Delirium in the intensive care unit is prevalent and a topic of high interest. Although it has been studied a great deal, screening, prevention, and management remain difficult. There are many causes of delirium and equally as many approaches to prevention and treatment.

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was a cluster-randomized trial to evaluate a cross-peer school-based obesity prevention program in Southern Appalachia. Undergraduate students from the disciplines of Kinesiology, Nutrition, and Public Health were trained as peer facilitators to deliver an 8-week curriculum in high school classes. The focus of the curriculum was on improving diet and physical activity with an additional emphasis on enhancing leadership and communication skills.

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