4,010 research outputs found

    Edward M. Purcell Interview

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    Oral history interview with Edward M. Purcell by Robert B. Eckles.

    Life at low Reynolds number

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    エドワード・パーセル(著) , 石本健太 (訳)Translated from E. M. Purcell, Life at low Reynolds number, AIP Conference Proceedings 28, 49 (1976), with the permission of AIP Publishing.本論文は, エドワード・パーセル(Edward Purcell) の有名なレクチャーノート「Life at lowReynolds number」の邦訳です. 元の原稿は, ヴィクター・ワイスコップ(Victor Weisskopf) を祝して催された会議「Physics and Our World: A Symposium in Honor of Victor F. Weisskopf」(1974 年10 月17 日 18 日, MIT)の会議録として出版されました.その後,American Journalof Physics からもリプリントが出版されています(Am. J. Phys. 45 (1977) 3-11). Translated from E. M. Purcell, Life at low Reynolds number, AIP Conference Proceedings 28, 49 (1976), with the permission of AIP Publishing

    Letter from Edward Dent to Michel-Dmitri Calvocoressi, January 15, 1928

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    A letter dated January 15, 1928 from English musicologist, teacher, and critic Edward Joseph Dent to French musicologist and critic Michel-Dmitri Calvocoressi, regarding Béla Bartók's "Bluebeard's Castle" in Frankfurt and Henry Purcell's "King Arthur" at Cambridge

    IPMC-Based Purcell’s Three-Link Swimmer: Simulations and Experiments at Low-Reynolds Conditions

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    The Purcell’s swimmer, consisting of three links with two one-degree-of-freedom joints as defined by Edward M. Purcell, has been studied by several authors since its introduction in 1977. Researchers have delved into its mathematical foundations, analysing and optimising its motion for efficient propulsion. However, despite these theoretical advances, the practical realisation and experimental characterisation of Purcell’s swimmers remains relatively unexplored. Critical aspects such as material selection, manufacturing techniques, and experimental validation under real conditions represent important knowledge gaps. This paper contributes to bridging this gap by presenting a prototype of such a swimmer using ionic polymer-metal composites (IPMC) as link actuators. A simulation model is developed based on physical modelling tools in MATLAB®/Simulink®. Both simulation and experimental results at low-Reynolds-number (Re) conditions are presented to demonstrate the performance of the swimmer

    The scale-up of a tissue engineered porous hydroxyapatite polymer composite scaffold for use in bone repair: an ovine femoral condyle defect study

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    The development of an osteogenic bone graft substitute has important practical and cost implications in many branches of medicine where bone regeneration is required. Previous in vitro and small animal (murine) in vivo studies highlighted a porous hydroxyapatite/poly (dl‐lactic acid) composite scaffold in combination with skeletal stem cells (SSCs) as a potential bone graft substitute candidate. The aim of the current study was to scale up the bone cell‐scaffold construct to large animals and examine the potential for repair of a critical‐sized defect via an ovine model. SSC seeded scaffolds (and unseeded scaffold controls) were implanted bilaterally into ovine femoral condyle critical defects for 3 months. A parallel in vitro analysis of ovine SSC seeded scaffolds was also performed. Post mortem mechanical indentation testing showed the bone strengths of the defect sites were 20% (controls) and 11% (SSC seeded scaffolds) those of normal cancellous bone (p < 0.01). MicroCT analysis demonstrated new bone formation within all defects with a mean increase of 13.4% in the control scaffolds over the SSC seeded scaffolds (p = 0.14). Histological examination confirmed these findings, with enhanced quality new bone within the control defects. This study highlights important issues and steps to overcome in scale‐up and translation of tissue engineered products. The scaffold demonstrated encouraging results as an osteoconductive matrix; however, further work is required with cellular protocols before any human trials

    The conservation value of hedgerows to small mammals on Prince Edward Island

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    Hedgerows are an important landscape feature on Prince Edward Island, Canada and are often the only forested links between isolated forest fragments. Although recent studies have examined the effects of fragmentation on small mammals on Prince Edward Island (e.g., Silva et al. 2000, Silva 2001), none have addressed the use of hedgerows by small mammals. A total of 13 hedgerows and 12 forest fragments in three sites located in central Prince Edward Island were studied from May to September 2001. Hedgerows varied in length, between 70 m and 720 m, and width between 9.4 m and 31 m. Fragment area varied from 0.006 km2 to 0.560 km2. Large Sherman live traps were placed in the center of hedgerow vegetation at 10 m intervals throughout the length of the hedgerow, while a grid configuration was used in forest fragments with the maximum area sampled being 6400 m 2. Within each study site, hedgerows and forest fragments were sampled simultaneously. (Abstract shortened by UMI.).Source: Masters Abstracts International, Volume: 41-02, page: 0470.Adviser: Marina Silva

    The transition of students with disabilities from high school to post secondary activities: A Prince Edward Island perspective

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    This qualitative study explored the transition process for students with disabilities in Prince Edward Island, Canada when they transitioned from high school to post secondary activities. Information was obtained from 2 questionnaires. One questionnaire was submitted to each of the 12 high schools in Prince Edward Island. A second questionnaire was submitted to Disability Support Workers in the provincial Department of Social Services and Seniors. A third data collection was obtained from a focus group interview of parents of students with disabilities who had transitioned from high school. Although there are elements and pockets of some form of transitional planning occurring in educational and social services jurisdictions across Prince Edward Island, it is apparent from the research findings that it is not consistent. In fact, there is an absence of neither a common process nor a common practice when transitional plans are developed for students with disabilities.Source: Masters Abstracts International, Volume: 46-03, page: 1229

    Operator's license - revocations and suspensions

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    by Edward M. Syring, Manager, Drivers' License Division.Address before the Sixth Oregon Traffic Court Conference, University of Oregon, Eugene, April 24, 1958.Title from PDF caption (viewed on August 3, 2022).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Mode of access: Internet from the Oregon Government Publications Collection.Text in English

    G. M. Hopkins

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    [sound recording] / Brendan O'Grady. G. B. Shaw by Fran Frazer.; 1 sound cassette (60 minutes); Broadcast on CFCY Radio, Charlottetown, March 07 & 11, 1974.; G. B. ShawSource type: Electronic(1
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