108,026 research outputs found
Rob Bowman, 2003
No full textStax musician Rob Bowman discusses his career, other Stax musicians including Booker T., Isaac Hayes, and Otis Redding, the Blues genre at Stax, and black culture as it relates to music. Interview recorded on February 13th, 2003
M. T. V. Bowman
No full textAn obituary for educator and United States Civil War First Maine Cavalry member M. T. V. Bowman
M. T. V. Bowman
No full textAn obituary for educator and United States Civil War First Maine Cavalry member M. T. V. Bowman
M. T. V. Bowman
No full textAn obituary for educator and United States Civil War First Maine Cavalry member M. T. V. Bowman
Letter from W. T. Johnson to Richard Bowman of the Peace Corps
No full textLetter from W. T. Johnson to Richard Bowman of the Peace Corps concerning NFA students who had applied to join
Letter from W. T. Johnson to Dick Bowman of the Peace Corps
No full textLetter from W. T. Johnson to Dick Bowman of the Peace Corps, giving list of NFA applicants to the Peace Corps
Bowman, T H (Thomas Harold), SX9327
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/372957Surname: BOWMAN
Given Name(s) or Initials: T H (THOMAS HAROLD)
Military Service Number or Last Known Location: SX9327
Missing, Wounded and Prisoner of War Enquiry Card Index Number: 45692183998
Item: [2016.0049.05279] "Bowman, T H (Thomas Harold), SX9327
Isaac Bowman & James T Leonard letter to John Bower, Canton 7th March, 1814
No full textJohn Bower's presence is requested by Bowman and Leonard to view a road from the 9th Township & 8th range to the fifty five mile tree on the Connecticut Reserve Line. Persons viewing the road were to meet on the third Monday of the month at the house of Richard Carter at the Mouth of Sandy to discharge their civic duties. 7.55" x 6.55" (19.3 by 16.7 cm
Bronze plaque of W. T. Waggoner by Electra Waggoner Bowman
No full textBronze plaque of W. T. Waggoner by Electra Waggoner Bowman, his granddaughter, presented to the Fort Worth Public Library by Mrs. W. T. Waggoner.https://mavmatrix.uta.edu/specialcollections_startelegram1930s/5952/thumbnail.jp
Blending of polyethylene materials for pipe applications
No full textThis thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Melt blending of polyethylene, in particularly HDPE and LLDPE, have been shown to be a major success, especially in the film markets. In this thesis studies are reported on the stress rupture performance of pipes produced from selected polyethylene materials blended to a chosen MDPE pipe grade. The pipes were tested, notched or unnotched, at a single temperature of 80oC and at internal pressures designed to induce slit-mode failure. Results showed the simple concept of increasing the stress rupture
performance of a pipe material by the addition of a higher molecular weight polymer was invalidated when applied to the blends system used in these studies. However molecular weight does have an influence to some degree as was illustrated by the addition of a very low molecular weight material, which produced the poorest stress rupture properties of the additives used.
Charaterization techniques, including Differential Scanning Calorimetry and Dynamic Mechanical Thermal Analysis, showed good compatibility of the blends at all addition levels studied, illustrating that there was no seperation of the polyethylene phases. Fracture analysis of pipe failures
showed variations between the blends, except for a MDPE additive which had similar molecular characteristics to the base resin. Some of the blends fracture surfaces were found to vary in fibre height and distribution from the bore region to the outside of the pipe. On the morphological front spherulites from pipe samples were found to be a poor indication of stress
rupture behaviour. Pipe blends were produced which had fine/featureless morphologies but whose 80oC stress rupture behaviour was found to be good and poor in comparison to the control MDPE pipe resin which had a
spherulitic structure much larger than all the blends studied. Models presented here infer that a number of mechanisms may be operating in producing these changes in stress rupture properties. One may be due to
a dilution of a polyethylene system by materials of varying molecular weight and molecular weight distributions. This was evident in MDPE-AlMDPE-P blends (MDPE-P being a high molecular weight, low branch length additive), where the stress rupture performance initially decreased and then
increased after addition levels of 10wt%. The main mechanisms for this system was postulated to be the initial dilution of octene branching levels within the MDPE-A blend causing a reduction in the ability of the branches to sterically hinder crack propagation under stress, to one of chain
entanglement after sufficient levels of the additive was present in the blend to contribute to increasing the stress rupture behaviour. It was found that good blending can be produced using materials with similar branching types and distributions (especially in the high molecular weight tail), similar molecular weights and distributions and comparable crystallization
temperatures.This study is funded by the Science and Engineering Research Council and DuPont UK Ltd
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