1,582 research outputs found
Aunt Mag - 03
No full textPhotograph - Joe Irwin's Aunt Mag and other standing in front of a plane, likely the Gypsy Moth, [Calgary], Alberta. Left to right: Mrs. Emma Barton, Aunt Mag, Sister Jessie, Mrs. Bob Dingwall and her daughter, Grac
Aunt Mag
No full textPhotograph - Joe Irwin's Aunt Mag standing beside the Gypsy Moth, Great Western Airways, at Joe's first half hour dual instruction, Calgary, Albert
Mag and Agnes
No full textPhotograph - Joe Irwin's Aunt Mag and her oldest sister, Agnes. Vulcan, Albert
Экологические проблемы при MIG/MAG-сварке
No full textВ данной статье рассматриваются основные экологические проблемы при проведении MIG/MAG-сварки. Дана характеристика сварочного процесса в зависимости от состава защитных газов. Автор приводит рекомендации по минимизации неблагоприятного воздействия MIG/MAG-сварки на здоровье сварщиков. This article discusses the main environmental problems when carrying out MIG/MAG welding. The characteristic of welding process depends on the composition of the protective gases. The author gives recommendations to minimize the adverse effects of MIG/MAG welding on the health of welders
Improved productivity in fusion welding : executive summary
No full textThis document is an Executive Summary of individual submissions of work that the
author has submitted towards the degree of Engineering Doctorate. The work
comprises three main themes, which can be demonstrated in a broader sense as
contributing towards improved productivity in fusion welding:
i) The use of active fluxes for Tungsten Inert Gas (TIG) welding.
ii) An investigation into the reduction of porosity when Metal Active Gas (MAG)
welding galvanneal coated steel sheet used in the automotive industry.
iii) The use of high power Nd:YAG laser welding for the production of large
diameter, long distance land pipelines.
Active fluxes give improved productivity by increasing the penetration depth of the
TIG welding process by the simple addition of a flux applied to the surface.
Although the productivity benefits of the process had been proven through a joint
TWIIindustry project, the mechanism by which the fluxes produced this
improvement was not fully understood. The first theme investigated the mechanisms
at work in providing increased penetration and concluded that the primary
mechanism responsible for the action of the fluxes was not due to a change in the
flow of the molten pool but, as others had suggested, due to arc constriction. This
work contributed to a greater understanding of the welding process and,
furthermore, a greater understanding of the potential opportunities and limitations of
the process when designing new fluxes for other alloy systems.
MAG welds in coated steel sheet used in the automotive industry are prone to
porosity leading to high reject rates. The second phase of work reported here
determined welding procedures capable of delivering low porosity welds developed
through statistical experimental design. These procedures demonstrated how low
porosity welds could be made using conventional MAG welding techniques on
steels that had been galvanneal coated to provide corrosion resistance. The
procedures developed could be easily implemented at high production rates in an
industrial manufacturing environment to reduce defect levels, and thus costly repairs
or high scrap rates.
The third theme of the work demonstrated how Nd:YAG laser welding could
potentially be used to replace conventional arc welding techniques for land lay of
gas transmission pipelines. The application of a single laser fill pass, made at high
production rates, could replace the use of multiple MAG welding stations greatly
reducing the costs associated with pipeline fabrication. BP has claimed that half
pipeline cost savings of up to $300 million dollars are achievable through the
implementation of such a technique. The justification for the use of lasers in
pipelines is discussed in terms of both technical and economic suitability.
Preliminary experimental work showed that high power Nd:YAG laser welds could
achieve productivity targets, although in order to reduce defects and achieve the
necessary structural performance it would be necessary to combine laser welding
with a MAG welding process
Metagenome-assembled genome (MAG) information from Nome Creek, Alaska soils
No full textInformation on 54 prokaryotic metagenome-assembled genome (MAG) sequences binned from a co-assembly of 12 soil samples from this wildfire impacted upland Alaskan boreal forest soils. Taş N, Prestat E, McFarland JW, Wickland KP, Knight R, Berhe AA, Jorgenson T, Waldrop MP, Jansson JK. 2014. Impact of fire on active layer and permafrost microbial communities and metagenomes in an upland Alaskan boreal forest. ISME J 8:1904. doi:10.1038/ismej.2014.36</div
Interview with Carleigh Baker Author of ‘Bad Endings’ a short story collective: Author of ‘Bad Endings’ a short story collective
No full textAn Interview with Author Carleigh Baker
Reflexive conditions on artistic intentions
No full textFew dispute the descriptive necessity of intentions in art, little ground has been gained in virtue of such consensus. Intentions matter, but we must know not only which ones matter and why they matter but also the implications of their mattering for art theory writ large. I show that intentionality cannot be exhausted by mere appeals to deliberateness or bare artifactuality. I then argue that only reflexively governed intentions are necessary for art - artistic intentions are communicative intentions. Finally I show how making intentions reflexive accrues myriad art theoretical advantages ranging from interpretation to evaluation of art. Intentions matter because they are communicative. Art becomes language-like and in doing so art gets to matter because language matters.Ph.D.Includes bibliographical references (p. 181-184)
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