2,719 research outputs found
Colin Humphris
No full text"Colin Humphris 2 Sqdrn. RAAF. 1941 - 1942 Author of - 'Trapped on Timor' (as a result of bombing of Darwin Feb. 19, 1942)".Colin Humphris. 2 Squadron, Royal Australian Air Force 1941 - 1942. Author of - 'Trapped on Timor' (as a result of bombing of Darwin February 19, 1942)
Graduating from undergrads: Are Mechanical Turk workers more attentive than undergraduate participants?
No full textThis OSF project contains the data and syntax files for the following article that is currently in prep:
Capaldi, C. A. (2015). Graduating from undergrads: Are MTurk workers more attentive than undergraduate participants
Seeing and being green? The effect of money priming on willingness to perform sustainable actions, social connectedness, and prosociality
No full textThis is the OSF project associated with the following article:
Capaldi, C. A., & Zelenski, J. M. (2015). Seeing and being green? The effect of money priming on willingness to perform sustainable actions, social connectedness, and prosociality. Journal of Social Psychology
Supplemental material for Psychologizing indexes of societal progress: Accounting for cultural diversity in preferred developmental pathways
No full textSupplemental Material for Psychologizing indexes of societal progress: Accounting for cultural diversity in preferred developmental pathways by Kuba Krys, Colin A Capaldi, Vivian M-C Lun, Christin-Melanie Vauclair, Michael H Bond, Alejandra Domínguez-Espinosa and YukikoUchida in Culture & Psychology</p
Seeing and being green? The effect of money priming on willingness to perform sustainable actions, social connectedness, and prosociality
No full textThis is the OSF project associated with the following article:
Capaldi, C. A., & Zelenski, J. M. (2015). Seeing and being green? The effect of money priming on willingness to perform sustainable actions, social connectedness, and prosociality. Journal of Social Psychology
Colin Fraser
No full textPhotograph - Colin Fraser (third from right) in a loaded scow leaving for Fort Chipewyan from Athabasca, Alberta. A group of men are also standing on the pie
Ribozyme catalysis with a twist: active state of the twister ribozyme in solution predicted from molecular simulation
No full textWe present results from molecular dynamics simulations and free energy calculations of the twister ribozyme at different stages along the reaction path to gain insight into its mechanism. The results, together with recent biochemical experiments, provide support for a mechanism involving general-acid catalysis by a conserved adenine residue in the active site. Although adenine has been previously implicated as a general acid acting through the N1 position in other ribozymes such as the hairpin and VS ribozymes, in the twister ribozyme there may be a twist. Biochemical experiments suggest that general acid catalysis may occur through the N3 position, which has never before been implicated in this role; however, currently, there is a lack of a detailed structural model for the active state of the twister ribozyme in solution that is consistent with these and other experiments. Simulations in a crystalline environment reported here are consistent with X-ray crystallographic data, and suggest that crystal packing contacts trap the RNA in an inactive conformation with U-1 in an extruded state that is incompatible with an in-line attack to the scissile phosphate. Simulations in solution, on the other hand, reveal this region to be dynamic and able to adopt a conformation where U-1 is stacked with G33. In this state, the nucleophile is in line with the scissile phosphate, and the N1 position of G33 and N3 position of A1 are poised to act as a general base and acid, respectively, as supported by mutational experiments. Free energy calculations further predict the electrostatic environment causes a shift of the microscopic pKa at the N3 position of A1 toward neutrality by approximately 5 pKa units. These results offer a unified interpretation of a broad range of currently available experimental data that points to a novel mode of general acid catalysis through the N3 position of an adenine nucleobase, thus expanding the repertoire of known mechanistic strategies employed by small nucleolytic ribozymes.Peer reviewe
Orbit design for future SpaceChip swarm missions in a planetary atmosphere
No full textThe effect of solar radiation pressure and atmospheric drag on the orbital dynamics of satellites-on-a-chip (SpaceChips) is exploited to design equatorial long-lived orbits about the oblate Earth. The orbit energy gain due to asymmetric solar radiation pressure, considering the Earth's shadow, is used to balance the energy loss due to atmospheric drag. Future missions for a swarm of SpaceChips are proposed, where a number of small devices are released from a conventional spacecraft to perform spatially distributed measurements of the conditions in the ionosphere and exosphere. It is shown that the orbit lifetime can be extended and indeed selected through solar radiation pressure and the end-of-life re-entry of the swarm can be ensured, by exploiting atmospheric drag
Inside which circle? A reply to Colin Bundy
No full textThe author contests Colin Bundy's recent characterisation of the inapplicability of colonialism of a special type theory to South Africa
Colin Woodard Reading & Book Signing
No full textJournalist, Colin Woodard, will do a reading and book signing on his new historical novel, The Republic of Pirates which tells the story of the Pirates of the Caribbean. Also author of The Lobster Coast, and Ocean\u27s End. Colin Woodard is native of Maine
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