6,369 research outputs found
Stephen Russell : Super Vanitas
No full textThis article is an analysis and contextualisation of 'Super Vanitas' a video installation by Stephen Russell that was held at Boxcopy ARI, Brisbane. It discusses the significance of the painting 'Death of Marat' (J.L. David, 1793) to the work and describes the methodological processes that are revealed in the work
Magneto–Optical Kerr Effect Microscopy Investigation on Permalloy Nanostructures
No full textThis thesis focuses on the investigation of magnetic domains in ultrasmall permalloy (Ni80Fe20) structures down to nanometre size. Magnetic domains and domain walls in nano objects are often observed using a very high resolution and high power microscope such as magnetic soft x-ray microscope, magnetic force microscopy imaging and photoemission electron microscopy. A reason for this is because the Kerr signal in nanostructures is very weak. However the results from this thesis demonstrate that magnetic domains in permalloy magnetic nanostructures can still be observed with very good contrast using a Magneto-optical Kerr effect (MOKE) microscope. The constructed Kerr microscope is a home-build wide field microscope and is able to produce magnetic domains image of permalloy nanowire as small as 245 nm, although the resolution limit of the microscope is 505 nm. For the first time, a magnetic domain in nanowire with width of 245 nm is observed using a wide-field microscope. The combination of hysteresis loops and magnetic domains observations for studying a magnetic sample provides a three-dimensional understanding of the magnetic characteristic of the sample. This is crucial in investigating nano samples as the theoretical arguments with the experimental results are always constrained by the experimental part. Three kinds of nanostructure sample were observed using the Kerr microscope; a cross nanowire, zigzag nanowire and a nanowire with notch and a nucleation pad at one end. It was found that a cross nanowire can form magnetic domains upon reversal and the junction forms a magnetisation vortex. Findings from zigzag nanowire demonstrate a complex, multiple magnetic domains formation upon magnetisation reversal. A weak domain wall pinning effect was observed in the nanowire, causing a multiple domains formation in the nanowire upon reversal. It can be confirmed that this effect was caused by the high coercivity of the nucleation pad. For the nanowire with notch, it was demonstrated that the coercivities were different at negative and positive field. But for such case, there is a relationship observed between the percentage notch depth and the coercivity at the junction
Interview with Anne Russell
No full textInterview with Anne Russell, playwright and author of several books on local history, including Wilmington: A Pictoral History
One-pot syntheses of pseudopteroxazoles from pseudopterosins : a rapid route to non-natural congeners with improved antimicrobial activity
No full textRapid one-pot methodologies to prepare pseudopteroxazole (1) and novel congeners from abundant natural pseudopterosins have been devised. This is highlighted here with the first synthesis of the marine natural product homopseudopteroxazole (2) utilizing a novel, silver(I)-mediated catechol to benzoxazole transformation. Pseudopteroxazoles and isopseudopteroxazoles exhibit potent activity against a range of important Gram-positive pathogens including Mycobacterium spp. and vancomycin-resistant Enterococcus faecium. Several non-natural pseudopteroxazoles exhibited strong activity against methicillin-resistant Staphylococcus aureus, thereby displaying a broader spectrum of antibiotic activity compared to pseudopteroxazole
Arthur J. Russell Correspondence
No full textEntries include brief biographical information corrected in pencil, letters of introduction to Russell and his sister concerning the Maine Author Collection, a handwritten reply from Emma M. Russell, typed correspondence between Dunnack and Russell concerning books that should have been purchased right away at secondhand stores, a Maine Library Bulletin envelope with a small photographic portrait of young Russell and a full-length photograph, a page typed with a misspelling by the Maine State Library presented with a photograph of the home of Russell\u27s birth in Hallowell, Maine, and a lengthy typed biography on Minneapolis Journal stationery
Rosemary Russell
No full textPhotograph of Rosemary Russell (presumably the daughter of Kathleen Gooch)Leila Kerr (Linington) (Donor
Robert Russell
No full textPhotograph of Robert Russell (presumably the son of Kathleen Gooch)Leila Kerr (Linington) (Donor
Author Mary Doria Russell talks about her most recent work "The Sparrow"
No full textAuthor and "recovering academic" Mary Doria Russell talks about her most recent work "The Sparrow", which is about humanity's first contact with another intelligent species and the unexpected consequences. Sponsored by Michigan State University Libraries, Computing and Technology. Part of the MSU Libraries' Colloquia Series. Held at the MSU Main Library
Letter from H. L. Russell to Carl Hayden
No full textLetter from H. L. Russell to Carl Hayden regarding fines in the park
Chemical Screening Method for the Rapid Identification of Microbial Sources of Marine Invertebrate-Associated Metabolites
No full textMarine invertebrates have proven to be a rich source of secondary metabolites. The growing recognition that marine microorganisms associated with invertebrate hosts are involved in the biosynthesis of secondary metabolites offers new alternatives for the discovery and development of marine natural products. However, the discovery of microorganisms producing secondary metabolites previously attributed to an invertebrate host poses a significant challenge. This study describes an efficient chemical screening method utilizing a 96-well plate-based bacterial cultivation strategy to identify and isolate microbial producers of marine invertebrate-associated metabolites
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