1,869 research outputs found

    ENVIRONMENTAL VARIABLES ASSOCIATED WITH INVASIVE GLOSSY BUCKTHORN (FRANGULA ALNUS MILL.) AND INDIRECT CONTROL STRATEGIES FOR FOREST MANAGERS

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    Glossy buckthorn (Frangula alnus Mill.) is one of the most prominent non-native invasive plant species affecting New England forests. It quickly invades a forest and can create a dense understory effectively altering the species composition and dynamics of that forest. To gain a better understanding of the environmental variables associated with glossy buckthorn density we sampled forests across New Hampshire with varying degrees of buckthorn invasion. The effect on tree regeneration was analyzed with measurements of height and abundance of glossy buckthorn and native regeneration. Glossy buckthorn was found to be at its highest densities in disturbed softwood forests that were historically old fields, specifically eastern white pine (Pinus strobus L.), with a thin organic layer and low herbaceous cover on drained loam and clay soils. The data show there is direct competition between glossy buckthorn and forest tree regeneration, although no relationship with regeneration shade tolerance was found. This information was used to create a prescription risk tree to aid forest managers in assessing the risk of buckthorn invasion and inhibition of tree regeneration associated with harvesting and suggests how to adapt their silvicultural prescriptions

    Revivalist Fantasy: Alliterative Verse and Nationalist Literary History

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    Rare Books & Technology: Collaborating within the Library

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    “I wish I could put all of these books in my exhibit. I feel like I’m choosing between my children, but they just won’t all fit in the display cases.” This pitiful (and admittedly melodramatic) statement from a frustrated curator to an educational technology librarian led to an incredibly fun and fruitful collaboration between library departments at Boston College Law Library

    Language learning through interaction: Online and in the classroom

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    Online language teaching has become a popular alternative to classroom learning (Liu et al; Warschauer and Meskill). This led to research comparing the two learning environments (Young). Regardless of the learning environment, in order to be effective, the second language classroom must be designed to lead learners to acquisition. Studies suggest that collaborative tasks that push learners to negotiate meaning lead to acquisition (Leeser; Loewen and Erlam; Mackey and Philp; Stafford, Bowden, Sanz). Participants in this study were in two environments; a second language classroom in the typical in person classroom format, and a language learning course in an online platform. Both the classroom and online environments were recorded and the amount of conversational interaction was coded and measured. The data suggest both classrooms and online platforms contain input and interaction necessary for acquisition to occur

    Pneumonia Caused by Klebsiella spp. in 46 Horses.

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    BackgroundKlebsiella spp. are implicated as a common cause of bacterial pneumonia in horses, but few reports describe clinical presentation and disease progression.Hypothesis/objectivesTo describe the signalment, clinicopathologic data, radiographic and ultrasonographic findings, antimicrobial susceptibility, outcome, and pathologic lesions associated with Klebsiella spp. pneumonia in horses.AnimalsForty-six horses from which Klebsiella spp. was isolated from the lower respiratory tract.MethodsRetrospective study. Medical records from 1993 to 2013 at the William R. Pritchard Veterinary Medical Teaching Hospital, University of California, Davis were reviewed. Exact logistic regression was performed to determine if any variables were associated with survival to hospital discharge.ResultsSurvival in horses <1 year old was 73%. Overall survival in adults was 63%. For adults in which Klebsiella pneumoniae was the primary isolate, survival was 52%. Mechanical ventilation preceded development of pneumonia in 11 horses. Complications occurred in 25/46 horses, with thrombophlebitis and laminitis occurring most frequently. Multi-drug resistance was found in 47% of bacterial isolates. Variables that significantly impacted survival included hemorrhagic nasal discharge, laminitis, and thoracic radiographs with a sharp demarcation between marked caudal pulmonary alveolar infiltration and more normal-appearing caudodorsal lung.Conclusions and clinical importanceKlebsiella spp. should be considered as a differential diagnosis for horses presenting with hemorrhagic pneumonia and for horses developing pneumonia after mechanical ventilation. Multi-drug resistance is common. Prognosis for survival generally is fair, but is guarded for adult horses in which K. pneumoniae is isolated as the primary organism

    The wishes and dreams our hearts make in Oates's "Where are you going, where have you been?"

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    La nouvelle extraordinairement populaire de Joyces Carol Oates doit beaucoup à sa fascinante complexité, reformulant le mythe de Cendrillon pour aboutir à un commentaire pénétrant sur la culture de consommation américaine qui valorise, tout comme le font les mondes évoqués dans d'autres versions du conte, une domination mâle outrancière. La version donnée par Oates de ce conte de fée met en exergue l'écart radical entre les rêves de bonheur d'une jeune femme en Amérique et la cauchemardesque réalité que donne à vivre une société mercantile qui réduit la femme sous prétexte de l'exalter. Les topoï de l'histoire, rendus populaires par Walt Disney, sont évoqués ici où Connie rêve de son "Prince Charmant", Oates rappelant habilement par de nombreux détails l'histoire de Cendrillon. Par conséquent, la farce vicieuse de l'Amérique contemporaine se joue dans les vérités affreuses de l'auto-parodie d'une vision de la vie naïvement contradictoire d'une jeune femme – à la fois dans la version édulcorée de Disney et dans la version horrifique de Oates – une vision de la vie qu'ignore encore cette société qui mésestime et dévalorise la femme
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