6,292 research outputs found
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Media Cold Warriors: How the Pedro Panes Reinforced Cold War Policies toward Cuba
Latin American Studie
Public Relations of Academic Libraries
published or submitted for publicatio
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Effect of Polymer Coatings as Intermediate Binders on Sintering of Ceramic Parts
It has been proposed that a thin polymer layer applied to the
surfaces of finely divided ceramic powders would serve as a suitable
intermediate binder for Selective Layer Sintering of ceramic pans. In this
study, the effects of completeness and fraction of coa nd particle size
distribution on sintering rates and strengths of coated ridized glass are
examined. The effect of the coating as a binder during Selective Layer
Sintering as well as the binder's burnout capability during post processing
steps are also investigated.Mechanical Engineerin
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Post-Processing of Selective Laser Sintered Polycarbonate Parts
St\ldies were conducted·to det~rmine the effect of
press\lre onpost-prpeessingofpolycarbonate coupons. No
significant differences betweencou.pons processed at
atmospheric •cQndidons.. andcouponsprpeessedin.vacuum
were •observed. However, anisotropic shrinkage .was
observedin.thez-directionnormal to thesintering plane.
Thisphenomenawasfurtl1erinvestigated usingsYIllmetrical
polycarbonatecubespr9(iuced by Selective LaserSintering
using yariedlas~rpoweryariedpowderlayer thickness, and
varied powder bed temperaturesMechanical Engineerin
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Microencapsulation of Finely Divided Ceramic Powders
Polymer coated alumina particles have been prepared by spray
drying alumina powder with a polymer emulsion. Powders containing a
maximum of 50% wt. were obtained. The coated particles were compared
to mixtures of alumina and polymer. Oven sintering tests show the coated
material to compact more than the mixed and pure polymer materials.
Strong, well defined parts with layer thicknesses of 0.002" were produced
from both coated and mixed materials by the Selective Layer Sintering
process.Mechanical Engineerin
Value of Quaker Religious Thought to Me and to Friends
Excerpt: Quantitatively speaking, if it were not for Quaker Religious Thought, my credentials as a published scholar would be slim indeed. By the time I reached the age of 65, they would have consisted of one published lecture (the 1968 Shrewsbury Lecture) and one book review (in the Anglican Theological Review. Everything else — articles, comments, book reviews, editorials — had been published in QRT
Man as a resource on the moon
Human performance at operational lunar bas
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