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Swannanoa, NC, United States

Warren Wilson College is a private four-year liberal arts college near Asheville, North Carolina in the Swannanoa Valley. It is known for its curriculum that combines academics, work and service which requires every student to complete a requisite course of study, work an on-campus job, and perform community service. The college offers classes in a range of disciplines with Environmental Studies and Creative Writing among the most popular.Warren Wilson is one of the few colleges in the United States that requires students to work for the institution in order to graduate, and is one of only seven colleges in the Work Colleges Consortium. The college is notable for its surrounding environment with a 275-acre working farm, market garden, and 625 acres of managed forest that includes 25 miles of hiking trails. Wikipedia.

Jusko T.A.,National Institute of Environmental Health and Safety | Klebanoff M.A.,Ohio State University | Brock J.W.,Centers for Disease Control and Prevention | Brock J.W.,Warren Wilson College | Longnecker M.P.,National Institute of Environmental Health and Safety

BACKGROUND:: Dichlorodiphenyltrichloroethane (DDT) continues to be used for control of infectious diseases in several countries. In-utero exposure to DDT and dichlorodiphenyldichloroethylene (DDE) has been associated with developmental and cognitive impairment among children. We examined this association in an historical cohort in which the level of exposure was greater than in previous studies. METHODS:: The association of in-utero DDT and DDE exposure with infant and child neurodevelopment was examined in 1100 subjects in the Collaborative Perinatal Project, a prospective birth cohort enrolling pregnant women from 12 study centers in the United States from 1959 to 1965. Maternal DDT and DDE concentrations were measured in archived serum specimens. Infant mental and motor development was assessed at age 8 months using the Bayley Scales of Infant Development, and child cognitive development was assessed at age 7 years, using the Wechsler Intelligence Scale for Children. RESULTS:: Although levels of DDT and DDE were relatively high in this population (median DDT concentration, 8.9 μg/L; DDE, 24.5 μg/L), neither were related to Mental or Psychomotor Development scores on the Bayley Scales nor to Full-Scale Intelligence Quotient at 7 years of age. Categorical analyses showed no evidence of dose-response for either maternal DDT or DDE, and estimates of the association between continuous measures of exposure and neurodevelopment were indistinguishable from 0. CONCLUSIONS:: Adverse associations were not observed between maternal serum DDT and DDE concentrations and offspring neurodevelopment at 8 months or 7 years in this cohort. © 2012 by Lippincott Williams & Wilkins. Source

Walker S.H.,North Carolina State University | Lilley L.M.,Warren Wilson College | Enamorado M.F.,North Carolina State University | Comins D.L.,North Carolina State University | Muddiman D.C.,North Carolina State University
Journal of the American Society for Mass Spectrometry

A library of neutral, hydrophobic reagents was synthesized for use as derivatizing agents in order to increase the ion abundance of N-linked glycans in electrospray ionization mass spectrometry (ESI MS). The glycans are derivatized via hydrazone formation and are shown to increase the ion abundance of a glycan standard more than 4-fold. Additionally, the data show that the systematic addition of hydrophobic surface area to the reagent increases the glycan ion abundance, a property that can be further exploited in the analysis of glycans. The results of this study will direct the future synthesis of hydrophobic reagents for glycan analysis using the correlation between hydrophobicity and theoretical non-polar surface area calculation to facilitate the development of an optimum tag for glycan derivatization. The compatibility and advantages of this method are demonstrated by cleaving and derivatizing N-linked glycans from human plasma proteins. The ESI-MS signal for the tagged glycans are shown to be significantly more abundant, and the detection of negatively charged sialylated glycans is enhanced. © 2011 American Society for Mass Spectrometry. Source

This research presents an examination of Black gay men and their lived experiences while undergraduates at historically Black colleges and universities (HBCUs). Based on 10 in-depth interviews with self-identified Black gay men, the author presents four emergent themes, which reveal the complex ways in which Black gay men navigate and negotiate the intersections of their multiple identities as related to race, sexual orientation, and gender at HBCUs. The findings of this research have implications for larger discussions of community, Black masculinity, and gay identity in predominantly Black and non-Black contexts. © , Copyright © Taylor & Francis Group, LLC. Source

This article addresses an effort to incorporate wireless sensor networks and the emerging tools of the Geoweb into undergraduate teaching and research at a small liberal arts college. The primary goal of the research was to identify the hardware, software, and skill sets needed to deploy a local sensor network, collect data, and transmit that data over the Internet in a format that could be viewed and analyzed by an end user. A second goal of the project was to identify new skills and technologies that could be incorporated into existing GIS and computer science courses in order to better prepare students for the changing landscape of the Geoweb. © 2011 National Council for Geographic Education. Source

Ellum D.S.,Warren Wilson College | Ashton M.S.,The New School | Siccama T.G.,The New School
Forest Ecology and Management

This study was designed to answer questions about the patterns of understory diversity in managed forests of southern New England, and the factors that appear associated with those patterns. At the landscape-level, we used plot data to answer questions regarding the spatial distribution of forest understory plant species. Data from a combination of fixed area (understory vegetation) and variable radius (overstory trees) plot methods are combined with site variables for the analysis. Univariate and multivariate statistical methods are used to test for understory diversity relationships with overstory cover types and topography separately, and in combination. Analyses also test for relationships between specific understory species and cover types. In general the understory flora is dominated by four common clonal species that occur across the range of forest cover types: wild sarsaparilla (Aralia nudicaulis L.), Canada mayflower (Maianthemum candense Desf.), star flower (Trientalis borealis Raf.), and partridgeberry (Mitchella repens L.). Results also show that over story composition and structure can be used to assess understory species richness. Species richness follows a general trend among cover types of: hardwood ≥ regenerating forest, hardwood-pine, and pine ≥ mixed ≥ hardwood-hemlock > hemlock. Eastern hemlock (Tsuga canadensis L. Carriere) and mountain laurel (Kalmia latifolia L.) (which decreased in dominance from ridge to valley) both showed negative trends with understory species richness. Topographic position also appears associated with understory floristic patterns (particularly for the hardwood cover type), both in terms of species richness and compositional diversity which both increased from ridge, to midslope, to valley. However, overstory composition (covertype) appears to have a higher order influence on vegetation and mediates the role of topography. The results from this study provide foresters with a better understanding for maintaining floristic diversity and composition of the understory in managed forests. © 2010 Elsevier B.V. All rights reserved. Source

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