40,766 research outputs found
Studio copy of portrait of early Utah settler John Moburn Kay, 1863
No full textFinding aid reads: "Joseph M. Locke photograph is a 5x7, black and white portrait of John M. Kay in the form of a cabinet card. The image is quite faded." Printed on back: C. R. Savage, Art Bazar, Salt Lake City, Utah." Handwritten on back: "John M. Kay\u27s picture From a photograph taken in England about 1863.
Johanna Henderson with Bill, Bruce and Kay Henderson
No full textBill Henderson (R) Bruce Henderson (L) Kay Henderson (M)
The relationship between the rate of starch synthesis, the adenosine 5' -diphosphoglucose concentration and the amylose content of starch in developing pea embryos
No full textClarke, Belinda R.; Denyer, Kay; Jenner, Colin F.; Smith, Alison M
Emotional abuse in sport: A case study of trichotillomania in a prepubescent female gymnast
No full textThis article is made available through the Brunel Open Access Publishing Fund. Copyright @ 2013 Gervis M, et al. This is an open-access article distributed under
the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and
source are credited.Despite improved legislation in most countries, child abuse in sport continues to exist but is a problem which is often under reported or ignored. In elite sport ‘suffering’ is not uncommon and hence sometimes child abuse is sometimes unrecognised, de-emphasised or easily dismissed as part of a collective experience that is perceived to be necessary to ‘create’ elite athletes. However, even swearing, anger, raised voices and negative comments directed at child athletes by coaches is considered abuse and can, when regular and routine, cause long term wellbeing and health issues. Self-harm can be a consequence and here self-harm in the form of trichotillomania, self hair-pulling, is reported for the first time as a secondary consequence of abuse. The 12 year old female gymnast, subject of this case study, presented with this impulse control disorder as defined by the American Psychiatric Association and was successfully treated using cognitive behavioural therapy. However, the training environment, including coach behaviour, did not change and so the gymnast remained at risk of recurrence of self-harm. Such environments in sport have many characteristics in common with and reminiscent of religious cults; sacrifice, isolation, shared obsession, a charismatic leader, and often in the presence of severe calorie restriction. As a consequence of ageing, growth, injury and an unchanging abusive environment, a year later the gymnast retired from the sport
Transition metal hydrides as reagents in organic and organometallic synthesis
No full textTypescript (photocopy).The group 6 anionic transition metal hydrides, HM(CO)4L- (M = Cr, W; L = CO, P(OMe)3 were found to be convenient reagents in organic and organometallic synthesis. These reagents offer the advantages of high selectivity, relative ease of preparation, and the potential for catalytic activity through regeneration using inexpensive reagents. These hydrides were found to reduce carbonyl functionalities within organic substrates, such as aldehydes, as well as carbonyls attached to metal centers. The reduction of acyl and alkyl substrates was also possible. Reduction of alkyl and acyl halides was easily achieved with high selectivity. When the alkyl or acyl moiety was attached to a metal center, reaction with the group 6 hydrides eliminated the organic product through a binuclear reductive elimination pathway. The formation of a heterobimetallic bridging hydride intermediate was observed in some of these reactions. Addition of an activated olefin, such as acrylonitrile, to selected anionic transition metal hydrides and alkyls resulted in formation of the alkyl addition product. Olefin addition could also occur to the heterobimetallic hydride, HFeW(CO)9-. Addition of a metal-bound olefin, (CH2=CHCN)Fe(CO)4, to the group 6 hydrides also resulted in formation of a metal alkyl. However, in this case a heterobimetallic product resulted due to a M-M' adduct reaction concomitant to the hydride transfer. Elemental sulfur was also found to be an active substrate for hydride addition. Reaction of S8 with selected anionic hydrides and alkyls resulted in the formation of the addition product, RSM(CO)n-. Reactivity differences were noted in systems employing one metal center vs. systems employing two metal centers. A measure of the effect of the second metal center could be achieved by comparison of a similar monomeric and dimeric system. The reactivites of MeFe(CO)4- and MeFe(CO)4W(CO)5- were tested as a gauge for this effect. As well as exhibiting successful H- (two-electron) transfer behavior, the anionic metal hydrides could function as efficient one-electron transfer reagents. Addition of two equivalents of hydride to a series of metal carbonyl dimers, M2(CO)[n]L[m], resulted in dimer disruption yielding the metal carbonyl anions
Masculinities, gender relations and leisure studies: are we there yet?
No full textThe genesis for this special edition occurred at the 8th Biennial Australian and New Zealand Association of Leisure Studies conference hosted by Victoria University, Melbourne in 2008. A special theme, organized by Tess Kay, Kevin Lyons and John Jenkins encouraged eight presenters to examine masculinities and leisure under the title of ‘Unlocking men: Presentations around the theme of men, gender and leisure’. Three papers are worthy of specific mention as they revealed that a more extensive examination of leisure and masculinities was warranted. Kay (2008) provided a critical assessment of the gendering of leisure studies and a call to address the deficit of knowledge concerned with masculinities and leisure. Kevin Lyons (2008), in a similarly provocative manner, examined how men’s leisure research had been preoccupied with responding to the critiques made by feminist leisure scholarship rather than addressing the gendered experiences of men’s leisure. And Veal (2008) argued that the leisure experiences of men had been neglected, and perhaps even ‘stereotyped’, within leisure studies. It was within this challenging and critically engaged context that the seeds for this special edition were sown. In this introductory paper, we first present an abridged overview of how gender analyses within leisure studies have developed. We then provide the results of a content analysis that examined papers published in three leading leisure journals concerned with leisure and masculinities. This is followed by a discussion of issues associated with theorizing masculinities. Finally, we introduce the papers presented within this special edition
The Crisis of 2007-09: Nature, Causes, and Reactions
No full textThis is a pre-copy-editing, author-produced PDF of an article accepted for publication in Journal of Interntional Economic Law following peer review. The definitive publisher-authenticated version [Journal of International Economic Law 13(3):531-550 2010] is available online at: http://jiel.oxfordjournals.org/content/13/3/531.ful
A Novel Method to Detect Bacterial Restriction-Modification (R-M) Systems
No full textAnalysis of recently sequenced microbial genomes has revealed many DNA sequences that code for previously unknown restriction endonucleases and their corresponding methyltransferases. These findings show that numerous restriction enzymes abundant in bacteria have yet to be discovered. Traditionally, restriction enzymes have been discovered by the classical restriction and modification (R-M) phenomena of bacteriophages (type I and III enzymes), or by direct enzyme assays (type II enzymes). To avoid the limitations of these traditional approaches, a quantitative R-M test based on plasmid transformation efficiency (Plasmid R-M Test) was established using DNA fragments derived from the E. coli bacteriophage lambda. This test is similar to traditional “efficiency of plating” (EOP) assays but measures “efficiency of transformation” (EOT). To determine the feasibility of using plasmid transformation to detect restriction activity, five known R-M systems were tested, including: type I (EcoBI, EcoAl, Eco124I), type II (Hindlll), and type III (EcoP1I). To test the hypothesis that this methodology could be used to locate recognition sequences, we applied this methodology to determine the DNA recognition sequence for KpnAl, which was found to be GAA(6N)TGCC. For this, the computer program, RM Search was developed to analyze positive and negative DNA sequence data. In addition, a simple method was designed and used to identify the modification sites for the KpnAI methyltransferase. This method employs the concept of restriction enzyme sensitivity to the methylation status of double-stranded DNA. The recognition sequences for three previously characterized Salmonella R-M systems, StySEAI, StySENI, and StySGI were found to be ACA(6N)TYCA, CGA(6N)TACC, and TAAC(7N)RTCG, respectively. In addition, this project identified R-M systems in clinical E. coli strains EC826, EC851, and EC912. The recognition sequences for these systems respectively are GCA(6N)CTGA, GTCA(6N)TGAY, and CAC(5N)TGGC. Because plasmid transformation methods are available for many bacteria and enzyme purification is not required, this model system can be extended to further bacterial species to search for new R-M systems. Combined with RM Search, a newly developed computer program, this new test may become one of the standard methods used to find new restriction enzymes, and to predict their recognition sequences
The universal galaxy cluster pressure profile from a representative sample of nearby systems (REXCESS) and the Y_SZ - M_500 relation
No full textWe investigate the regularity of cluster pressure profiles with REXCESS, a representative sample of 33 local (z < 0.2) clusters drawn from the REFLEX catalogue and observed with XMM-Newton. The sample spans a mass range of 1014 < M500 < 1015 , where M500 is the mass corresponding to a density contrast of 500. We derive an average profile from observations scaled by mass and redshift according to the standard self-similar model, and find that the dispersion about the mean is remarkably low, at less than 30 per cent beyond 0.2 R500, but increases towards the center. Deviations about the mean are related to both the mass and the thermo-dynamical state of the cluster. Morphologically disturbed systems have systematically shallower profiles while cooling core systems are more concentrated. The scaled profiles exhibit a residual mass dependence with a slope of ~0.12, consistent with that expected from the empirically-derived slope of the M500 – YX relation; however, the departure from standard scaling decreases with radius and is consistent with zero at R500. The scatter in the core and departure from self-similar mass scaling is smaller compared to that of the entropy profiles, showing that the pressure is the quantity least affected by dynamical history and non-gravitational physics. Comparison with scaled data from several state of the art numerical simulations shows good agreement outside the core. Combining the observational data in the radial range [0.03–1] R500 with simulation data in the radial range [1–4] R500, we derive a robust measure of the universal pressure profile, that, in an analytical form, defines the physical pressure profile of clusters as a function of mass and redshift up to the cluster “boundary”. Using this profile and direct spherical integration of the observed pressure profiles, we estimate the integrated Compton parameter Y and investigate its scaling with M500 and LX, the soft band X-ray luminosity. We consider both the spherically integrated quantity, Ysph(R), proportional to the gas thermal energy, and the cylindrically integrated quantity, Ycyl(R)=YSZ DA2, which is directly related to the Sunyaev-Zel'dovich (SZ) effect signal. From the low scatter of the observed Ysph(R500) – YX relation we show that variations in pressure profile shape do not introduce extra scatter into the Ysph(R500) – M500 relation as compared to that from the YX – M500 relation. The Ysph(R500) – M500 and Ysph(R500) – LX relations derived from the data are in excellent agreement with those expected from the universal profile. This profile is used to derive the expected YSZ – M500 and YSZ – LX relations for any aperture
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