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Digitale Medien

Epitaxial Y2O3 films grown on Si(111) by pulsed-laser ablation (2000)

Hunter, M. E. ; Reed, M. J. ; El-Masry, N. A.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 76 (2000), S. 1935-1937

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ISSN: 1077-3118

Quelle: AIP Digital Archive

Thema: Physik

Notizen: Y2O3 has a relatively high dielectric constant (13–17) leading to several potential applications. In this work, pulsed-laser deposition was used to grow epitaxial Y2O3 films on Si(111) substrates. Structural characterization indicated two-dimensional growth without the formation of an amorphous interfacial layer. Annealing in either Ar or O2 was found to induce an O2 diffusion reaction resulting in the formation of two interfacial amorphous layers. Electrical characterization by capacitance–voltage and current–voltage indicated that the as-grown samples were poor insulating films. Annealing the samples improved the electrical performance by lowering leakage currents and exhibiting inversion during capacitance–voltage testing. This epitaxial growth points toward the possibility of the heteroepitaxial growth of silicon on insulator device structures. © 2000 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.126217

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Digitale Medien

Helminths as therapeutic agents for inflammatory bowel disease (2004)

Hunter, M. M. ; Mckay, D. M.

Oxford, UK : Blackwell Science Ltd

Alimentary pharmacology & therapeutics 19 (2004), S. 0

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ISSN: 1365-2036

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Medizin

Notizen: Over the last decade major advances have been made in our understanding of the mechanisms and mediators of inflammation that hold the promise of the development of new therapies for inflammatory disease. While much is to be gleaned from the application of new technologies, assessment of the age-old host–parasite relationship may also provide insights on how to counter pathological inflammatory events. In the case of inflammatory bowel disease [particularly Crohn's disease, which is associated with T helper 1 (Th1) events] it is proposed that infection with parasitic helminths would be beneficial: the paradigm being that of immune deviation, where Th2 cytokines mobilized in response to the helminth will prevent or antagonize the disease-promoting Th1 events in the gut. The situation is unlikely to be this simple. Here we review and critique the data in support of helminth therapy for inflammatory bowel disease, drawing attention to the gaps in knowledge and presenting a view on how the field may be advanced. While the concept of helminth therapy may be superficially unappealing, this review may convince the reader of the value of more extensive analyses of the impact of helminth infection on enteric inflammation.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.0269-2813.2004.01803.x

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Digitale Medien

Cross-cultural dimensions of Internet portals (2002)

Zahir, Sajjad ; Dobing, Brian ; Hunter, M. Gordon

Bingley : Emerald

Internet research 12 (2002), S. 210-220

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ISSN: 1066-2243

Quelle: Emerald Fulltext Archive Database 1994-2005

Thema: Informatik

Notizen: When new technologies become available and cultures adopt them, the result can be either convergence, cultures becoming more similar as a result, or divergence, when cultures adopt technology in different ways that maintain or even further accentuate their differences. An analysis of full-service national Web portals from different countries, typically offering a search engine, directories of links on a set of selected topics, news items (including weather, sports, entertainment, and stock market results), advertisements and shopping, and free e-mail, shows evidence of both trends. While most national portals closely resemble the basic structure of Yahoo!, the original free full-service portal, there are also differences in appearance and features offered that can be attributed to cultural variations based on Hofstede's framework.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1108/10662240210430892

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