389 research outputs found

    The Value of Attending University: An Analysis on the Novels of Evelyn Waugh and their Adaptations

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    An analysis on Evelyn Waugh\u27s novels: Brideshead Revisited, Decline and Fall, and Vile Bodies as well as their film and television adaptations. The paper relates all of these works to Waugh\u27s idea that the true value and reason why students should attend university is not because their degree will earn them a massive salary, but because it allows for another four years of sequestered development away from adult society. Waugh stated that the true value of his time as an undergraduate at Oxford was because it provided him with the opportunity to drink, throw parties, discover art, etc...which therefore gave him an appropriate amount of time to grow up gradually. All of these novels, films, and television series provide substantial evidence as to why Waugh\u27s point was correct and is still valid

    Development Of An Engineered Bioluminescent Reporter Phage For Detection Of Bacterial Blight Of Crucifers

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    Bacterial blight, caused by the phytopathogen Pseudomonas cannabina pv. alisalensis, is an emerging disease afflicting important members of the Brassicaceae family. The disease is often misdiagnosed as pepper spot, a much less severe disease caused by the related pathogen Pseudomonas syringae pv. maculicola. We have developed a phage-based diagnostic that can both identify and detect the causative agent of bacterial blight and differentiate the two pathogens. A recombinant >light>-tagged reporter phage was generated by integrating bacterial luxAB genes encoding luciferase into the genome of P. cannabina pv. alisalensis phage PBSPCA1. The PBSPCA1::luxAB reporter phage is viable and stable and retains properties similar to those of the wildtype phage. PBSPCA1::luxAB rapidly and sensitively detects P. cannabina pv. alisalensis by conferring a bioluminescent signal response to cultured cells. Detection is dependent on cell viability. Other bacterial pathogens of Brassica species such as P. syringae pv. maculicola, Pseudomonas marginalis, Pectobacterium carotovorum, Xanthomonas campestris pv. campestris, and X. campestris pv. raphani either do not produce a response or produce significantly attenuated signals with the reporter phage. Importantly, the reporter phage detects P. cannabina pv. alisalensis on diseased plant specimens, indicating its potential for disease diagnosis.National Science Foundation Small Business Innovative Research 1012059U.S. Department of EducationU.S. Department of AgricultureCellular and Molecular Biolog

    Educating Occupational Therapists in the Use of Theory and Evidence to Enhance Supervision Practice

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    This paper describes the implementation of a unique learning experience aimed at enhancing the quality of supervision practice in occupational therapy at the Gold Coast Hospital and Health Service. The package was designed by experienced occupational therapy educators based on adult, blended, and flipped learning approaches with content developed following administration of a standardized tool and semi-structured interviews. The learning package focused particularly on the logistics of supervision and the use of occupational therapy theory and evidence with supervision. The training for supervising therapists included a workshop and pre and post workshop learning activities. This collaborative research approach to designing and implementing a learning package as well as the specific content of the ongoing education opportunities could also be transferred to other services

    Characteristics of Occupation-based Education within Entry-level Occupational Therapy Programs: Professional Leaders\u27 Perspectives

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    Occupational therapy is a profession concerned with promoting health and well-being through occupation, and accordingly occupation should permeate all aspects of the profession. Entry-level education is the primary means by which new members of the profession become educated about occupation and its place in occupational therapy practice. Therefore, it is essential that education reflects the core concept of the profession. To date there have been individual opinions about occupation-based education but no studies have documented the characteristics that demonstrate this approach from the perspective of professional leaders. A qualitative descriptive study was conducted to explore professional leaders’ views on, and strategies for, occupation-based entry-level education. Participants were selected through a combination of purposive and network sampling to ensure variation and depth. Six in-depth, semi-structured interviews of approximately 60 minutes duration each, were conducted with leaders from Australia, Canada, and the United States of America via telephone or internet conferencing. These interviews were transcribed verbatim and analysed thematically. Three themes emerged: embodied knowledge and understanding of occupation and its link to health and well-being; deliberate educators who value occupation; and rhetoric versus reality of professional practice. This research demonstrates the critical role individual academics play in the development of students’ understanding of, and passion for, occupation and how it is enacted in practice. Educators must continue to develop their knowledge and skills of occupation as well as effective ways to teach this core concept

    Walking as a meaningful leisure occupation: the implications for occupational therapy

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    Introduction: In response to growing interest in leisure in occupational therapy and the importance of understanding how occupations maintain, enhance and promote health and wellbeing, a qualitative phenomenological study was conducted to explore the experiences of walking for leisure. Method: Six healthy student participants, identified as regular walkers, were interviewed using a semi-structured format. Data were analysed following interpretative phenomenological analysis methodology. Findings: Participants expressed how and why walking was meaningful to them; the four main themes were social connectedness, wellbeing, connection to nature and achievement from a challenge. Findings suggest that occupational therapists could use walking and leisure occupations in intervention, and that there is scope for an occupational therapy perspective in health promotion. Conclusion: Determining the subjective meaning of engaging in walking as a leisure occupation has implications for occupational science and health promotion in helping to explain why people do what they do

    Role of osmotic and hydrostatic pressures in bacteriophage genome ejection

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    A critical step in the bacteriophage life cycle is genome ejection into host bacteria. The ejection process for double-stranded DNA phages has been studied thoroughly \textit{in vitro}, where after triggering with the cellular receptor the genome ejects into a buffer. The experimental data have been interpreted in terms of the decrease in free energy of the densely packed DNA associated with genome ejection. Here we detail a simple model of genome ejection in terms of the hydrostatic and osmotic pressures inside the phage, a bacterium, and a buffer solution/culture medium. We argue that the hydrodynamic flow associated with the water movement from the buffer solution into the phage capsid and further drainage into the bacterial cytoplasm, driven by the osmotic gradient between the bacterial cytoplasm and culture medium, provides an alternative mechanism for phage genome ejection \textit{in vivo}; the mechanism is perfectly consistent with phage genome ejection \textit{in vitro}.Comment: 5 pages, 2 figures, references update

    Experimental evolution of UV resistance in a phage

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    The dsDNA bacteriophage T7 was subjected to 30 cycles of lethal ultraviolet light (UV) exposure to select increased resistance to UV. The exposure effected a 0.9999 kill of the ancestral population, and survival of the ending population was nearly 50-fold improved. At the end point, a 2.1 kb deletion of early genes and three substitutions in structural-genes were the only changes observed at high frequency throughout the 40 kb genome; no changes were observed in genes affecting DNA metabolism. The deletion accounted for only a two-fold improvement in survival. One possible explanation of its benefit is that it represents an error catastrophe, whereby the genome experiences a reduced mutation rate. The mechanism of benefit provided by the three structural-gene mutations remains unknown. The results offer some hope of artificially evolving greater protection against sunlight damage in applications of phage therapy to plants, but the response of T7 is weak compared to that observed in bacteria selected to resist ionizing radiation. Because of the weak response, mathematical analysis of the selection process was performed to determine how the protocol might have been modified to achieve a greater response, but the greatest protection may well come from evolving phages to bind materials that block the UV

    Salerno's model of DNA reanalysed: could solitons have biological significance?

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    We investigate the sequence-dependent behaviour of localised excitations in a toy, nonlinear model of DNA base-pair opening originally proposed by Salerno. Specifically we ask whether ``breather'' solitons could play a role in the facilitated location of promoters by RNA polymerase. In an effective potential formalism, we find excellent correlation between potential minima and {\em Escherichia coli} promoter recognition sites in the T7 bacteriophage genome. Evidence for a similar relationship between phage promoters and downstream coding regions is found and alternative reasons for links between AT richness and transcriptionally-significant sites are discussed. Consideration of the soliton energy of translocation provides a novel dynamical picture of sliding: steep potential gradients correspond to deterministic motion, while ``flat'' regions, corresponding to homogeneous AT or GC content, are governed by random, thermal motion. Finally we demonstrate an interesting equivalence between planar, breather solitons and the helical motion of a sliding protein ``particle'' about a bent DNA axis.Comment: Latex file 20 pages, 5 figures. Manuscript of paper to appear in J. Biol. Phys., accepted 02/09/0
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