Genetic Factors Contributing to the Susceptibility of Development of Prion Diseases

This paper won an honorable mention writing flag award in the research category. Claire Culbertson, writing for Katherine Bruner’s BIO 325L class, “Lab Experience in Genetics”.Bruner, KatherineUndergraduate Studie

Sandy Symbionts: How Tree Identity Shapes Ectomycorrhizal Fungus in Sand Pine

ABSTRACT Sandy Symbionts: How Tree Identity Shapes Ectomycorrhizal Fungus in Sand Pine The purpose of my thesis was to investigate the structure and composition of the ectomycorrhizal (EMC) fungal communities of sand pine (Pinus clausa var. immuginata). Root tips were sampled from four trees located within Eglin Air Force Base. Colonization was shown to differ significantly based on tree identity. Abundance, species diversity, and the ratio of ECM fungi to pathogenic fungi did not differ significantly based on tree identity. A total of 35 ECM operational taxonomic units (OTUs) were shown to colonize the four trees. Helotiales4, Lactarius2, and Cenococcum geophilum were found to be the most abundant OTUs, while Lactarius1 was found to be the least abundant. The results of my research suggest that difference in the ECM communities of sand pine is determined by variation in ECM fungal activity at the microscale of individual trees

Race and Poverty

With the right solutions and enough hard work, there is a chance that inner cities can become revitalized. It cannot happen overnight, but if the government and the people cooperate—it will happen

AX-5 space suit bearing torque investigation

The symptoms and eventual resolution of a torque increase problem occurring with ball bearings in the joints of the AX-5 space suit are described. Starting torques that rose 5 to 10 times initial levels were observed in crew evaluation tests of the suit in a zero-g water tank. This bearing problem was identified as a blocking torque anomaly, observed previously in oscillatory gimbal bearings. A large matrix of lubricants, ball separator designs and materials were evaluated. None of these combinations showed sufficient tolerance to lubricant washout when repeatedly cycled in water. The problem was resolved by retrofitting a pressure compensated, water exclusion seal to the outboard side of the bearing cavity. The symptoms and possible remedies to blocking are discussed

The Best Way to Locate a Purpose in Sport: In Defence of a Distinction for Aesthetics?

The paper highlights the centrality of some concepts from philosophy of sport for philosophical aesthetics. Once Best (BJA, 1974) conclusively answered negatively the fundamental question, ‘Can any sport form be an artform’, what further issues remained at the intersection of these parts of philosophy? Recent work revitalizing this interface, especially Mumford’s Watching Sport (2012), contested Best’s fundamental distinction between purposive and aesthetic sports, and insisted that purist viewers are taking an aesthetic interest in sporting events. Here, we defend Best’s conception against considerations Mumford hoped would bring the aesthetics of art and sport closer together, thereby elaborating the aesthetics of sport. But, against Mumford’s resolutely psychological conception of an aim, we follow Best to defend the centrality, for purposive sports, of the means/ends contrast remains, even when taking an aesthetic interest in such sports. We conclude with general speculations about the potential future of the discussions originated here

The partnership: Space shuttle, space science, and space station

An overview of the NASA Space Station Program functions, design, and planned implementation is presented. The discussed functions for the permanently manned space facility include: (1) development of new technologies and related commercial products; (2) observations of the Earth and the universe; (3) provision of service facilities for resupply, maintenance, upgrade and repair of payloads and spacecraft; (4) provision of a transportation node for stationing, processing and dispatching payloads and vehicles; (5) provision of manufacturing and assembly facilities; (6) provision of a storage depot for parts and payloads; and (7) provision of a staging base for future space endeavors. The fundamental concept for the Space Station, as given, is that it be designed, operated, and evolved in response to a broad variety of scientific, technological, and commercial user interests. The Space Shuttle's role as the principal transportation system for the construction and maintenance of the Space Station and the servicing and support of the station crew is also discussed