13,744 research outputs found
Wear modelling of diamond-like carbon coatings against steel in deionised water
No full textDiamond-Like Carbon (DLC) coatings are thin protective surface coatings used to reduce friction and minimise wear in a wide range of applications. The focus of this work is the use of DLC coatings within Rolls-Royce’s pressurised water reactors. A strong understanding of material behaviour in this environment is compulsory due to the stringent safety requirements of the nuclear industry. Wear testing of a range of commercial DLC coatings against steel in water, and the dependence of the tribology on normal load, sliding distance, and environmental species, was examined. Wear depth was observed to increase with normal load, and increase non-linearly with sliding distance. Uniquely, it was suggested that the tribology of a DLC coating in water was controlled by the velocity accommodation mode (VAM) of the transfer layer. When interfacial sliding was the dominant VAM, the carbonaceous transfer layer was present at all times, and a low specific wear rate was observed. When shear and recirculation of debris was the dominant VAM, the carbonaceous transfer layer initially present was replaced by iron oxide species, and a high specific wear rate was observed as a result of a three-body mechanism involving hematite.Two individual wear models were developed to predict the wear depth of a DLC coating sliding against steel in water. Each model represents a novel extension to the current literature regarding the modelling of wear. Firstly, an analytical differential equation was derived to predict the wear depth of a ball and a flat surface, in relation to any phenomenological law for wear volume. Secondly, a unique formulation of an incremental wear model for an arbitrary geometry was developed for a DLC coating which included the growth of a transfer layer. An efficient methodology was presented to allow fast integration of the equations whilst damping numerical instabilities. A comparison between the analytic and computational wear models showed a strong agreement in the model predictions, with a comparative error of less than 5%
Dr. Alfred Sutton family
No full textLeft to right back row: Dr. Sutton, Lorna, Christopher. Left to right front row: Winifred, Emmeline (May), Mrs. Ellen Sutton. From Dr. Sutton album
2019-2020 Anne Newman Sutton Weeks Poetry Series - Christopher Nelson and Betsy Sholl
No full textChristopher Nelson is the author of Blue House, published in the Poetry Society of America\u27s Chapbook Series; Capital City at Midnight, recipient of the 2014 Bloom Chapbook Prize; and Love Song for the New World, published in the Seven Kitchens Press Editor\u27s Series. He is the founder and editor of Green Linden Press and the journal, Under a Warm Green Linden, named by Entropy Magazine as one of the best journals of 2017. Betsy Sholl has published nine books of poetry, most recently House of Sparrows: New and Selected Poems (2019), winner of the Four Lakes Prize from the University of Wisconsin Press. Otherwise Unseeable won the 2014 Maine Literary Award for Poetry. She was Poet Laureate of Maine from 2006-11. She is the recipient of an NEA fellowship and two Maine Artists fellowships. She has taught in the writing program at MIT, the University of Southern Maine, and the Vermont College of Fine Arts. The speakers were introduced by Natasha Sajé, Professor of English and curator of the Anne Newman Sutton Weeks Poetry Series. This lecture was held and filmed on September 26, 2019 at the Kim T. Adamson Alumni House, Westminster College, Salt Lake City, Utah
Interview with Nicholas Christopher, author of Somewhere in the Night: Film Noir and the American City
Full text linkInterview with Nicholas Christopher, author of Somewhere in the Night: Film Noir and the American Cit
On morphology, molecular composition and breakdown behaviour in semi-crystalline polymers
No full textMatt Christopher Papers - Accession 1309
Full text linkThe collection includes letters written by the children’s book author, Matt Christopher, to his son, Marty Christopher. Many of the letters also contain newspaper articles of interest to Matt Christopher, which deal with local sports teams, his writing career, his participation in an exhibition baseball game against the New York Giants in 1938, and other of general interest. Most of the letters are personal in nature, however, a majority of the letters delve into Matt Christopher’s writing career, personal interests, the author’s health, as well as his family life.https://digitalcommons.winthrop.edu/manuscriptcollection_findingaids/2649/thumbnail.jp
Matt Christopher Papers - Accession 1221
Full text linkMatt Christopher (1917-1997) was a prolific author of children’s books having written over 100 books as well as over 300 short stories, articles, poems, and screenplays. Most of his writings dealt with sports themes, but he also wrote fantasy and mystery themed stories as well. The Matt Christopher Papers consist of both published and unpublished manuscripts, articles, and short stories. Also included are personal and business correspondence, biographical information, scrapbooks, photographs, and memorabilia.https://digitalcommons.winthrop.edu/manuscriptcollection_findingaids/1976/thumbnail.jp
Dr. Christopher von Rueden – Faculty Author Interview
No full textDr. Christopher von Rueden, an anthropologist and Assistant Professor in the Jepson School of Leadership Studies, discusses a recent article entitled, “Men’s status and reproductive success in 33 non-industrial societies: Effects of subsistence, marriage system, and reproductive strategy,” which he co-authored with Dr. Adrian Jaeggi, an anthropologist at Emory University. Their findings were recently published in the journal, Proceedings of the National Academy of Sciences
Homegoing Service For Mr. James A. "Litty" Christopher
No full textFuneral program for Mr. James A. Christopher, died May 1976. The funeral was held May 24, 1976 at Second Baptist Church, officiated by Reverend S. H. James. The funeral arrangements were made through Sutton-Sutton Mortuary, Inc. and he was buried in Fort Sam Houston National Cemetery near San Antonio, Texas
ICONS II: Identifying Continence OptioNs after Stroke randomised controlled trial
Full text linkLois Thomas, Christine Roffe, Joanne Booth, Christopher Chapple, Caroline Watkins, Brenda Roe, Christopher Sutton, Bruce Hollingsworth, Céu Mateus, David Britt, Cliff Panton and Kina Bennett; for the MRC Continence Programme and R&D Stroke and Incontinence Stud
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