23 research outputs found
Detecting ZnSe secondary phase in Cu2ZnSnSe4 by room temperature photoluminescence
No full textpeer reviewe
Text, Medium, Afterlife: Intertextuality and Intermediality in the Works of Yoko Tawada
No full textText, Medium, Afterlife: Intertextuality and Intermediality in the Works of Yoko Tawada examines the roles of personal and mass media technologies in the works of contemporary German-language author Yoko Tawada. The study analyses the author\u27s prose fiction, wherein
the possibility of limitless textual permutations - an afterlife of the text - is accessed through a web of intertextual and intermedial associations. The expression of an individual voice against a
dominant culture\u27s mass media mobilizes a discourse of networks which emerges from the creative gaps and apertures revealed by the author\u27s deconstructive approach to language and literatures
Method for manufacturing a semiconductor thin film
No full textpublication date: 2013; filing date: 2013-10-2
Parasites in the City: Degree of Urbanization Predicts Poxvirus and Coccidian Infections in House Finches (Haemorhous mexicanus)
No full textabstract: Background
Urbanization can strongly impact the physiology, behavior, and fitness of animals. Conditions in cities may also promote the transmission and success of animal parasites and pathogens. However, to date, no studies have examined variation in the prevalence or severity of several distinct pathogens/parasites along a gradient of urbanization in animals or if these infections increase physiological stress in urban populations.
Methodology/Principal Findings
Here, we measured the prevalence and severity of infection with intestinal coccidians (Isospora sp.) and the canarypox virus (Avipoxvirus) along an urban-to-rural gradient in wild male house finches (Haemorhous mexicanus). In addition, we quantified an important stress indicator in animals (oxidative stress) and several axes of urbanization, including human population density and land-use patterns within a 1 km radius of each trapping site. Prevalence of poxvirus infection and severity of coccidial infection were significantly associated with the degree of urbanization, with an increase of infection in more urban areas. The degrees of infection by the two parasites were not correlated along the urban-rural gradient. Finally, levels of oxidative damage in plasma were not associated with infection or with urbanization metrics.
Conclusion/Significance
These results indicate that the physical presence of humans in cities and the associated altered urban landscape characteristics are associated with increased infections with both a virus and a gastrointestinal parasite in this common songbird resident of North American cities. Though we failed to find elevations in urban- or parasite/pathogen-mediated oxidative stress, humans may facilitate infections in these birds via bird feeders (i.e. horizontal disease transmission due to unsanitary surfaces and/or elevations in host population densities) and/or via elevations in other forms of physiological stress (e.g. corticosterone, nutritional).The article is published at http://journals.plos.org/plosone/article?id=10.1371/journal.pone.008674
Admittance spectroscopy in kesterite solar cells: Defect signal or circuit response
No full textpeer reviewe
