2,575 research outputs found
Tube-to-header joint for bimetallic construction
Design advantages of bimetallic construction enables an all-welded bimetallic joint to be made from the accessible header side of the tube-to-header joint. In the two-piece header design the weld joints completely seal the tube-header plate crevice and prevent crevice and stringer corrosion
Determination of the weldability and elevated temperature stability of refractory metal alloys quarterly report no. 6, 21 sep. - 20 dec. 1964
Determination of weldability and elevated temperature stability of refractory metal alloy
Determination of the weldability and elevated temperature stability of refractory metal alloys Ninth quarterly report, 21 Jun. - 20 Sep. 1965
Tensile strength and thermostability of welded refractory metal joint
Determination of the weldability and elevated temperature stability of refractory metal alloys seventh quarterly report, dec. 21, 1964 - mar. 20, 1965
Weldability and elevated temperature stability of refractory metal alloy
Determination of the weldability and elevated temperature stability of refractory metal alloys Tenth quarterly report, 21 Sep. - 20 Dec. 1965
Weldability and long time elevated temperature stability of refractory metal alloys for advanced alkali-metal space electric power system
Pacioli and humanism: pitching the text in Summa Arithmetica
Despite the wide cross-disciplinary influence of Fra’ Luca Pacioli’s Summa de Arithmetica, Geometria, Proportioni et Proportionalita (Summa), it has been criticized as being both difficult to read and written in a mixture of bad Italian and bad Latin; but, paradoxically, intellectuals
of Pacioli’s day praised the style of writing in Summa. Can both viewpoints be correct? The answer to this question is sought by identifying what may have inspired Pacioli to write Summa in the manner he did. In doing so, the article considers the times in which he lived and, in particular,
the impact that Renaissance Humanism and Humanist Education
may have had upon his writing style. The article finds both views were correct in their own timeframes and contexts and that Pacioli’s writing style was both an appropriate one with which to address a contemporary merchant society and one which would impress and gain the approval of his fellow humanist educators and patrons
The market for Luca Pacioli's Summa arithmetica
This paper looks at an aspect of Luca Pacioli and his Summa
Arithmetica that has not previously been explored in detail – the market for which he wrote the book. In order to do so, it follows a path identified by two clues in the bookkeeping treatise as to the nature of this market that modern eyes, unaware of how life was in late 15th century Italy, have missed. After discussing the curriculum taught in schools at that time, this paper considers a range of possible markets for which the book may have been written. The paper concludes that it was written primarily for, and sold mainly to, merchants who used the book as a reference text, as a source of pleasure from the mathematical puzzles it contained and as an aid for the education of their sons
Inhomogeneous spin diffusion in traps with cold atoms
The spin diffusion and damped oscillations are studied in the collision of
two spin polarized clouds of cold atoms with resonant interactions. The strong
density dependence of the diffusion coefficient leads to inhomogeneous spin
diffusion that changes from central to surface spin flow as the temperature
increases. The inhomogeneity and the smaller finite trap size significantly
reduce the spin diffusion rate at low temperatures. The resulting spin
diffusion rates, spin drag and initial damped oscillations are compatible with
measurements at low to high temperatures for resonant attractive interactions
but are incompatible with a metastable ferromagnetic phase.Comment: 3 pages, 1 figure; Phys. Rev. Letters, 201
Use of the Bipedicled Scalp Flap for Forehead Reconstruction
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/74824/1/j.1524-4725.1984.tb01210.x.pd
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