368 research outputs found
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Testing an integrated chronology: I-Xe analysis of enstatite meteorites and a eucrite
No full textWe have determined initial 129I/127I ratios for mineral concentrates of four enstatite meteorites and a eucrite. In the case of the enstatite meteorites the inferred ages are associated with the pyroxene-rich separates giving pyroxene closure ages relative to the Shallowater standard of Indarch (EH4, 0.04 ± 0.67 Ma), Khairpur (EL6, -4.22 ± 0.67 Ma), Khor Temiki (aubrite, -0.06 Ma), and Itqiy (enstatite achondrite, -2.6 ± 2.6 Ma), negative ages indicate closure after Shallowater. No separate from the cumulate eucrite Asuka (A-) 881394 yielded a consistent ratio, though excess 129Xe was observed in a feldspar separate, suggesting disturbance by thermal metamorphism within 25 Ma of closure in Shallowater. Iodine-129 ages are mapped to the absolute Pb-Pb time scale using the calibration proposed by Gilmour et al. (2006) who place the closure age of Shallowater at 4563.3± 0.4 Ma. Comparison of the combined 129I-Pb data with associated 53Mn ages, for objects that have been dated by both systems, indicates that all three chronometers evolved concordantly in the early solar system. The enstatite chondrites are offset from the linear array described by asteroid-belt objects when 53Mn ages are plotted against combined 129I-Pb data, supporting the suggestion that 53Mn was radially heterogeneous in the early solar system. © The Meteoritical Society, 2008
Chemical applications of escience to interfacial spectroscopy
No full textThis report is a summary of works carried out by the author between October 2003 and September 2004, in the first year of his PhD studie
Nostalgia: content, triggers, functions
Full text linkSeven methodologically diverse studies addressed 3 fundamental questions about nostalgia. Studies 1 and 2 examined the content of nostalgic experiences. Descriptions of nostalgic experiences typically featured the self as a protagonist in interactions with close others (e.g., friends) or in momentous events (e.g., weddings). Also, the descriptions contained more expressions of positive than negative affect and often depicted the redemption of negative life scenes by subsequent triumphs. Studies 3 and 4 examined triggers of nostalgia and revealed that nostalgia occurs in response to negative mood and the discrete affective state of loneliness. Studies 5, 6, and 7 investigated the functional utility of nostalgia and established that nostalgia bolsters social bonds, increases positive self-regard, and generates positive affect. These findings demarcate key landmarks in the hitherto uncharted research domain of nostalgi
Participatory mapping in Papua New Guinea
No full textZIP file includes a reflection document with supporting materials and a readme file.This record contains supplemental material associated with a participatory mapping project conducted in Papua New Guinea in 2014, including: a summary of the village history, tribal structure, structured and unstructured interviews, and participatory mapping activities discussed in 2011; an overview of other participatory mapping activities conducted in 2014 and some reflections on aspects of the process; questions and scenarios used for the social and environmental impacts workshop; and two videos documenting the project.Youtube video link for livelihood video made by village: Kamiali Lifestyle Video (English)
https://www.youtube.com/watch?v=P7ct7GI-fJk.Youtube video link on how the participatory video was created: Kamiali Lifestyle Video (English) https://www.youtube.com/watch?v=P7ct7GI-fJk
15.22 - Time-of-Flight Secondary Ion Mass Spectrometry, Secondary Neutral Mass Spectrometry, and Resonance Ionization Mass Spectrometry
No full textDue Process, Collective Bargaining, and S. 2(D) of the Charter: A Comment on B.C. Health Services
No full textIn its recent decision in B.C, Health Services, the Supreme Court of Canada took the monumental step of overruling its own precedents in the Labour Trilogy, by holding that the Charter guarantee of freedom of association does in fact protect a union\u27s right to engage in collective bargaining. The author argues that, while the decision marks a new era for labour relations in Canada, the Court\u27s methodology may have regressive consequences more generally for the interpretation of associational freedom under s. 2(d) of the Charter. She focuses on three aspects of this methodology. First, in constitutionalizing the right of access to a collective bargaining procedure free from substantial government interference (but not the outcomes of that procedure), the decision creates a model of due process which could downgrade the entitlement in s. 2(d) from a substantive to a procedural one. Second, while the imposition of a duty on employers to bargain in good faith may appear progressive, recent case law shows that positive rights and obligations can, ironically, be applied restrictively to narrow the scope of fundamental Charter freedoms. Third, by rejecting an abstract view of associational freedom, and favouring instead an approach that is heavily context-dependent, the Court interpreted s. 2(d) in a way which may have little relevance outside the labour relations setting, and which might be used to deny other types of claims. The author points out, however, that in B.C. Health Services the Court did not attempt to develop a new theory of entitlement for the guarantee. For this reason, she urges that the decision be read as one that is limited to the status of collective bargaining under the Charter, and that the Court has left to another day the task of redefining the conceptual foundation of s. 2(d). The paper closes by outlining several issues which must be addressed in any reconsideration of the guarantee
Due Process, Collective Bargaining and Section 2(d) of the Charter: A Comment on B.C. Health Services
Full text linkIn its recent decision in B.C. Health Services, the Supreme Court of Canada took the monumental step of overruling its own precedents in the Labour Trilogy, by holding that the Charter guarantee of freedom of association does in fact protect a union’s right to engage in collective bargaining. The author argues that, while the decision marks a new era for labour relations in Canada, the Court’s methodology may have regressive consequences more generally for the interpretation of associational freedom under section 2(d) of the Charter. She focuses on three aspects of this methodology. First, in constitutionalizing the right of access to a collective bargaining procedure free from “substantial” government interference (but not the outcomes of that procedure), the decision creates a model of due process which could downgrade the entitlement in section 2(d) from a substantive to a procedural one.Second, while the imposition of a duty on employers to bargain in good faith may appear progressive, recent case law shows that positive rights and obligations can, ironically, be applied restrictively to narrow the scope of fundamental Charter freedoms. Third, by rejecting an abstract view of associational freedom, and favouring instead an approach that is heavily context-dependent, the Court interpreted section 2(d) in a way which may have little relevance outside the labour relations setting, and which might be used to deny other types of claims. The author points out, however, that in B.C. Health Services the Court did not attempt to develop a new the ory of entitlement for the guarantee. For this reason, she urges that the decision be read as one that is limited to the status of collective bargaining under the Charter; the Court has left to another day the task of redefining the conceptual foundation of section 2(d). The paper closes by outlining several issues which must be addressed in any reconsideration of the guarantee
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Session B5: Efficiency of a Nature-Like Bypass Channel at Rodley Weir, River Aire
No full textPresenting Author Bio: Jamie Dodd has always had a passion with water and spent many of his younger years fishing at his local beach. In 2010 he undertook his BSc in Marine and Freshwater biology at Hull University. Jamie is currently a second year PhD student at the Hull International Fisheries Institute (HIFI). In his PhD Jamie is looking into the potential impact of man-made structures on the migrational movements of both anadromous and potamodromous salmonids. His work focuses on efficiency results and the micro scale behaviours of fish in and around fish passes.Abstract: Man-made physical barriers (weirs) have disrupted longitudinal connectivity in many river systems around the world for centuries. Impacts of weirs on fish communities centers on the reduced ability of fish to perform upstream migrations. To counter the potential effects these structures are having on fish communities, a number of fish pass designs have been developed to ease passage around potential barriers. To monitor the effectiveness of a recently constructed nature like bypass on the River Aire, Passive Integrated Transponder (PIT) systems were installed to observe movements of brown trout (Salmo trutta). The array consists of four swim through antennas, two at either end of the pass so that swimming direction could be determined. A total of 111 wild brown trout were caught, PIT tagged and released 380 m downstream of the fish pass entrance. In total 57 brown trout (51%) were detected on the most downstream loop, and of these 49 successfully entered the pass (86%). Thirtyeight of these successfully exited the pass in an upstream direction (78%). Further analysis found that a select number of fish used the pass as an area of refuge during high flows. The possible reasons for these findings are discussed in relation to flow, temperature, time of day, season and fish size. This information is important to improve our understanding of fish pass performance, thus informing future best practice guidance of fish passage designs
Resonant Spaces: Electroacoustic Music and Ritual: A commentary on my recent music.
No full textThe following portfolio and commentary concerns music and performance works created between 2008 and 2012, and an exposition of the research, ideas, aesthetics and techniques that connect
these works. I will discuss in detail the role that archaeoacoustics has played in my composition of fixed and mixed media works and how it has influenced me aesthetically in my approach to live performance. I will also explain in each instance any actual data used from various research sources, and my metaphorical interpretation of various archaeological sites and acoustic phenomena. Similarly, I will discuss the concepts of shamanism, ritual and transcendence that have influenced me, and how these concepts are expressed in my instrumental works, fixed media and live performance pieces
CORRECTION: Tracking repeat spawning anadromous fish migrations over multiple years in a fragmented river suggests philopatry and sex-linked variation in space use
Full text linkThe article “Tracking repeat spawning anadromous fsh migrations over multiple years in a fragmented river suggests philopatry and sex-linked variation in space use”, written by Peter Davies, J. Robert Britton, Demetra Andreou, Charles Crundwell, Jamie R. Dodd, Olivier Lepais, Andrew D. Nunn, Stephen Sabatino, Randolph Velterop, Jonathan D. Bolland was originally published under © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024. As a result of the subsequent decision to publish the article under the open access model, the article’s copyright notice was changed on 19 February 2025 to © The Author(s) 2025 and the article is now distributed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0
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