782 research outputs found
Supplementary data for The Structures and Magnetic Properties of FexCo1 xSb2O4 and MnxCo1 xSb2O4, 0 ≤ x ≤ 1
No full textMnxCo1-xSb2O4 and FexCo1-xSb2O4 have been synthesised for 0 ≤ x ≤ 1 and their structures and magnetic properties examined. For all compounds, neutron powder diffraction (NPD) data reveal a canted AFM structure that changes gradually from C-type (x = 0) to A-type (x = 1). This transition corresponds to a gradual rotation of the moments through 90o, from ±[001] to ± [100]. It is primarily caused by a change in the relative magnitudes of the three types of magnetic exchange that exist between cations. Within a given chain, direct exchange promotes an antiferromagnetic ground state for the two cations and 90o superexchange that favours ferromagnetic order. Between chains, antiferromagnetic order is preferred. However, the observed magnetic moments (from NPD) are significantly lower than expected except for the end-members of the series; this suggests that incomplete magnetic order is present. Magnetic susceptibility data also suggest complex magnetic behaviour except for the end-member compounds. The complex magnetic features appear to originate from composition inhomogeneity, local magnetic order in the chains of octahedra being dependent on small clusters of the same transition metal ion and the delicate energy balance that clearly exists between the two ordered configurations in the mid-composition region where x is near to 0.5
BiMnPO5
No full textNeutron diffraction datasets and GSAS instrument parameter file for BiMnPO5 at ambient temperature and 2K
sj-docx-1-dhj-10.1177_20552076211057667 - Supplemental material for ImpulsePal: The systematic development of a smartphone app to manage food temptations using intervention mapping
No full textSupplemental material, sj-docx-1-dhj-10.1177_20552076211057667 for ImpulsePal: The systematic development of a smartphone app to manage food temptations using intervention mapping by Samantha B van Beurden, Colin J Greaves, Charles Abraham, Natalia S Lawrence and Jane R Smith in Digital Health</p
Violin sonata
No full textBenjamin Greaves, violin; Colin Noble, pianoABC Classic FMOff-air broadcast recording. Copied under Part VA of the Copyright Ac
The vector of jaw muscle force as determined by computer-generated three dimensional simulation: A test of Greaves' model
No full textWe present results from a detailed three-dimensional finite element analysis of the cranium and mandible of the Australian dingo ('Canis lupus dingo') during a range of feeding activities and compare results with predictions based on two-dimensional methodology [Greaves, W.S., 2000. Location of the vector of jaw muscle force in mammals. Journal of Morphology 243, 293-299]. Greaves showed that the resultant muscle vector intersects the mandible line slightly posterior to the lower third molar (m3). Our work demonstrates that this is qualitatively correct, although the actual point is closer to the jaw joint. We show that it is theoretically possible for the biting side of the mandible to dislocate during unilateral biting; however, the bite point needs to be posterior to m3. Simulations show that reduced muscle activation on the non-biting side can considerably diminish the likelihood of dislocation with only a minor decrease in bite force during unilateral biting. By modulating muscle recruitment the animal may be able to maximise bite force whilst minimising the risk of dislocation
Caribbean Report 08-01-1998
No full textEurope has won a minor battle in the struggle to balance its duty to the WTO and its responsibility to the Caribbean under the Lome Convention. Gordon Myers, the European Representative of the Caribbean Banana Exporters Association, comments on what interest groups are doing to help Europe decide on the way forward. The British government has followed their US counterparts in issuing a travel advisory against all but essential visits to Guyana. St. Lucia's Prime Minister Kenny Anthony suggests that CARICOM should set up a mechanism to solve disputes over general elections results in the region. As Jamaica forges ahead with its plan to become a republic, Deputy Vice Chancellor of The UWI, Mona, Professor Rex Nettleford comments on the issue. Montserrat is experiencing problems with the pink mealybug which was discovered in November last year. Claude Gerald, Director of Agriculture comments on what is being done to eradicate the pest. Supporters of the new West Indies cricket captain Brian Lara continued their celebrations throughout the region. Colin Croft and Colin Murray offer advice to the new captain and Brian Lara insists that he wants the best team possible for the opening test against England at month's end.1. Headlines with Keith Stone Greaves (00:00-00:24)2. Europe wins a minor battle at the WTO and provides a glimmer of hope for the Caribbean banana industry (00:25-04:37)3. The British government follows the US and issues a travel advisory against non-essential travel to Guyana (04:38-05:06)4. Suggestions that CARICOM should establish a mechanism to solve disputes over elections results (05:07-10:07)5. Montserrat is having problems with the pink mealybug and attempts to eradicate the pest (10:08-12:00)6. Colin Croft and Colin Murray offer their advice to the new West Indies cricket captain Brian Lara (12:01-14:40)7. Recap of top stories (14:41-15:05
Caribbean Report 14-07-1998
No full text1. Headlines with Debbie Ransome (00:00-00:32)2. The first obstacle is cleared for Barbados' Maurice King to become CARIOM's point man on Guyana. The man behind much of the unofficial negotiations so far between CARICOM and Guyana's political parties have been Shridath Ramphal. Shridath Ramphal is interviewed and Colin Smith reports (00:33-05:16)3. Jamaica tackles trade and relations with Cuba. While Cuba is improving its relationship with CARICOM and the European Union it is still making a bold efort to strengthen links with Latin America. Deputy Prime Minister Seymour Mullings is interviewed and Roise Hayes and Lourdes Garcia-Navarro report from Cuba (05:17-09:05)4. The BBC Caribbean Services is marking its 10th anniversary. Highlights of the last 10 yrs are given (09:06-11:51)5. Britain's Caribbean Overseas territories may get United Kingdom passports without having to lay out the welcome back to British citizens. Keith 'Stone' Greaves reports (11:52-15:24
Spacetime symmetries and the CPT theorem
No full textThis dissertation explores several issues related to the CPT theorem.
Chapter 2 explores the meaning of spacetime symmetries in general and time reversal in particular. It is proposed that a third conception of time reversal, 'geometric time reversal', is more appropriate for certain theoretical purposes than the existing 'active' and 'passive' conceptions. It is argued that, in the case of classical electromagnetism, a particular nonstandard time reversal operation is at least as defensible as the standard view. This unorthodox time reversal operation is of interest because it is the classical counterpart of a view according to which the so-called 'CPT theorem' of quantum field theory is better called 'PT theorem'; on this view, a puzzle about how an operation as apparently non-spatio-temporal as charge conjugation can be linked to spacetime symmetries in as intimate a way as a CPT theorem would seem to suggest dissolves.
In chapter 3, we turn to the question of whether the CPT theorem is an essentially quantum-theoretic result. We state and prove a classical analogue of the CPT theorem for systems of tensor fields. This classical analogue, however, appears not to extend to systems of spinor fields. The intriguing answer to our question thus appears to be that the CPT theorem for spinors is essentially quantum-theoretic, but that the CPT theorem for tensor fields applies equally to the classical and quantum cases.
Chapter4 explores a puzzle that arises when one puts the CPT theorem alongside a standard way of understanding spacetime symmetries, according to which (latter) spacetime symmetries are to be understood in terms of background spacetime structure. The puzzle is that a 'PT theorem' amounts to a statement that the theory may not make essential use of a preferred direction of time, and this seems odd. We propose a solution to that puzzle for the case of tensor field theories.Ph.D.Includes bibliographical references (p. 102)
Caribbean Report 18-01-2001
No full text1. Headlines (00:00-00:25)2. Caricom and Canada are about to discuss trade security and other mutual concerns. Senior Business Reporter of the Jamaican Gleaner Sam Davis reports (00:26-03:25)3. European Union Trade Commissioner Pascal Lamy has been given the go ahead to speed up the process by which some of the world's poorest countries can gain better access to the European Union market. Emma Joseph reports (03:26-05:00)4. Arguments on Guyana's immediate future continues in the courts there. Colin Smith reports from Georgetown (05:01-06:39)5. Vincentian experience in preparing for March elections. Pro-Unity and Labour Party Lawyer and Journalist Colin Williams is interviewed (06:40-09:44)6. There is optimism in some Caribbean diplomatic circles in the United States that the incoming Bushe administration will usher in upbeat United States Caribbean relations. Jamaican Ambassador Richard Bernal and Sarah Sloan, International Action Centre are interviewed (09:45-12:53)7. Barbadian sport consultant has taken up the case of three senior professional cricketers from Montserrat. Sport Consultant Frank Brathwaite is interviewed and Keith 'Stone' Greaves reports (12:54-14:47)8. Columbian police say they and their colleagues in the United States have broken up a major heroin smuggling ring after six months of investigations (14:48-15:27
Australian Author Marion Halligan - Word Artist
No full textAustralian author Marion Halligan admits that her life has been 'centred in domesticity' and this is where she draws on much of the material for her fiction. This could also be a reason why her work has been critically overlooked. Halligan is adept at capturing details of life in the domestic realm and weaving poignant, thought-provoking stories about experiences all of us can recognise in our own lives. It does not take the discerning reader long to discover the deeper considerations in her writing. According to Halligan, 'the world is a cruel and dark and difficult place and it is words that light the small candle flames that keep the dark at bay'[1]. Words and writing are essential to Halligan's life. In an essay titled 'Why I Write', she says: 'I write in order to put the world into words. I've always done that in my head. I can't perceive anything without trying to find words for it'[2]. Halligan's writing is an evocative exploration of the human condition. For Halligan, 'it is artists showing you what they see that educates the heart, in novels, in paintings, in photographs'.[3] The following essay examines three of Halligan's novels which feature an artist protagonist who is struggling to come to terms with the experience of loss, grief and bereavement. Lovers' Knots (1992), The Golden Dress (1998) and The Fog Garden (2001) are rich evocations of lives which are 'a walk with love and death ... The same subjects as the Greeks, and Shakespeare. [The] characters aren't kings and queens, aren't noble and grand, but their passions are as real'[4]
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