174,571 research outputs found
Reduction in secondary phases and increased transport I(c) of (Bi,Pb)2223/Ag tapes sintered with rapid heating rates
No full textIn a two-step heat treatment with one intermediate rolling the final transport critical current, (Ic at 77 K, self field, 1iV/cm), of 37 filament (Bi,Pb)2223/Ag tapes increases linearly with the heating ramp rate: 20 A to 40 A, (~20,000 Acm-2), for 20°C/hour to 400°C/hour. The principle benefit of the rapid ramp rate is likely to come from ramping fast though 800°C to 832°C in the 1st heat treatment. SEM and XRD analysis on the superconductor-Ag interface show a decrease in the amount of secondary phases, Cu2O, Bi2(Sr,Ca)2Cu1Ox, Bi(Sr,Ca)Ox, with increasing ramp rate and critical current
Andrew Jackson Riddle papers, W.0162
No full textAbstract: Papers and photographs by Civil War photographer Andrew Jackson Riddle.Scope and Content Note: The letters and papers of Andrew Jackson Riddle (probably best known for his photographs of the Andersonville Prison Camp) in this collection includes several lists of chemicals and papers needed to produce the photographic copies of maps for the Confederate Army. There is also a letter from Assistant Engineer A. H. Buchanan to Lieutenant J. W. Glenn requesting more copies of a particular set of maps of the Atlanta, Georgia, area. On the back of this letter is a note from Lieutenant Glenn to Captain Wrenshall to have the correct negative sent to the photographers "for execution of the within order." In a photocopied document, Riddle makes a case for leniency while a prisoner of war. As he was captured three times while transporting photographic supplies, it appears this statement was made during his second internment.The photographs are primarily cartes-de-visite made in his Macon, Georgia, studio. There are two larger cabinet cards made while he was in Columbus, Georgia. Of the cartes-de-visite, four of which are of Confederate officers, one is a composite picture of General Robert E. Lee surrounded by other Confederate officers. The other three include the following: John C. Wrenshall, Captain Engineers, C.S.A.; E. J. McGehu (McGehee?), Co. D. Twenty-first Mississippi Volunteers, Longstreet's Corps, Army of Northern Virginia; and Henry Farrow (rank and unit unknown). The remainder of the cartes-de-visite and the two cabinet cards are mainly of young women and children. Various fabrics in four of the pictures are tinted with a vibrant pink and one child's dress is a pale blue with dark blue trim.The collection also includes a single issue of
Confederate Veteran (v. XX, no. 2, August 1912) and the reprinted article "Scientist of the Confederate Nitre and Mining Bureau" by Ralph W. Donnelly from
Civil War History, vol. II, no. 4, December, 1956. The reprint is inscribed by the author and dated December 8, 1963.Biographical/Historical Note: Andrew Jackson Riddle was born on February 28, 1828, in Baltimore, Maryland. In the early 1850s, Riddle moved to Columbus, Georgia, and established a Daguerreian studio. On November 12, 1856, he married Annie P. Hunley; the couple had three children who lived to adulthood: John, George A., and Susie.Riddle enlisted in the Confederate army at the outbreak of the Civil War and served three years. He was captured three times; he even spent eight months in the Old Capitol Prison in Washington, DC. During the war, he worked with the engineers making photographic reproductions of the maps needed by the Army. In fact, two of the times he was captured, he was carrying photographic supplies from New York to Virginia through enemy lines.After the war he reestablished his photography studio in Macon, Georgia. He also spent a few years in Eufaula, Alabama, and moved from there to Columbus, where he resided until his death. Riddle died on March 21, 1897. He is buried in the Rose Hill Cemetery in Macon
Ic and phase characteristics of (Bi,Pb)2223 tapes after 1 heat treatment in a temperature gradient under different oxygen partial pressures
No full textThe heat treatment of (Bi,Pb)2223 tapes in a furnace with a temperature gradient allows the study of many heat treatment temperatures at the same time. 20 cm lengths of tape were given a typical first heat treatment of a period of 40 hours in a ~1°C/cm temperature gradient under either 7.5% partial pressure O2, or air. The maximum amount of (Bi,Pb)2223 occurred in a temperature window, (⩽2% change in the phase composition) of about 7°C under 7.5% partial pressure and 2°C under air. The relationship between the phase composition and the transport current, Ic, for both atmospheres is investigate
riddle (v)
No full textriddle vI can remember a riddle fence, too. Now these riddles were smaller still than pickets. They were small enough. . .that was a more expensive fence than a. . .than a picket fence because you had to use three rails an'. . .an' riddle your fence - on on one side that would come on top. . . outside on top on the other. . .the centre one, now, your riddles would. . . would cross on that, one goin' one way, comin' up one way, an' the next one would come up the other way.YesDNE-citJ. D. A. WIDDOWSONUsed IUsed I2Used IThere is an arrow drawn halfway down the quotation on the left side; the quotation has been modified in the dictionar
The effect of sintering temperature on the crystal growth of the Bi-2223 phase in multifilamentary tape
No full textBi-2223 tapes with 37 filaments, Ag–Mg–Ni alloy outer sheath and pure Ag inner sheath were heat treated in 7.5% O2 at different temperatures for 40 h. XRD of etched samples for increasing sintering temperature from 798 to 847 °C showed an increase of eightfold in the absolute intensity of the Bi-2223 (0 0 10) peak, without substantial decrease in the intensity of the Bi-2212 (0 0 Image) peak. These changes were correlated with the amount of liquid phase obtained from the Bi-2201 (0 0 8) peak. Optical microscopy also suggested an important role of the liquid phase by revealing significant changes in the morphology of Bi-2223 grains with increasing sintering temperature
CC-Riddle: A Question Answering Dataset of Chinese Character Riddles
Get PDFThe Chinese character riddle is a unique form of cultural entertainment
specific to the Chinese language. It typically comprises two parts: the riddle
description and the solution. The solution to the riddle is a single character,
while the riddle description primarily describes the glyph of the solution,
occasionally supplemented with its explanation and pronunciation. Solving
Chinese character riddles is a challenging task that demands understanding of
character glyph, general knowledge, and a grasp of figurative language. In this
paper, we construct a \textbf{C}hinese \textbf{C}haracter riddle dataset named
CC-Riddle, which covers the majority of common simplified Chinese characters.
The construction process is a combination of web crawling, language model
generation and manual filtering. In generation stage, we input the Chinese
phonetic alphabet, glyph and meaning of the solution character into the
generation model, which then produces multiple riddle descriptions. The
generated riddles are then manually filtered and the final CC-Riddle dataset is
composed of both human-written riddles and these filtered, generated riddles.
In order to assess the performance of language models on the task of solving
character riddles, we use retrieval-based, generative and multiple-choice QA
strategies to test three language models: BERT, ChatGPT and ChatGLM. The test
results reveal that current language models still struggle to solve Chinese
character riddles. CC-Riddle is publicly available at
\url{https://github.com/pku0xff/CC-Riddle}
Wordum min spel gesecgan: Speaking voice and written words in the Exeter Book Riddle 4
No full textExeter Book Riddle 4 has puzzled more than five generations of scholars
and inspired more than a dozen different solutions, none of which has
received consensus agreement. This paper is in support of the oldest solution
‘bell’, for which some new clues are presented. After discussing the
most ambiguous words and expressions in the text, it is argued that the
closing lines of the riddle allude to the widespread use of engraving a
“speaking” inscription upon medieval bells. Medieval runic evidence from
Scandinavia and Anglo-Saxon epigraphic and manuscript sources offer
very interesting analytical cues in this connection. At the end, the point is
made that the 'þragbysig' tool, scil. 'bell', of Riddle 4 could “tell” its story
(spel gesecgan, 12b) – possibly, its name or dedication to a saint, its date,
its founder’s name or mark, its carver’s name, a special invocation or
prayer, a protecting formula – like any other inscribed object, which the
Old English riddlers made “speak” in the Exeter Book collection
The riddle of F.F.F. [music] : song /
No full textFor voice and piano.; Cover title.; "F.F.F. an Australian mystery musical comedy."; "... produced by Robt. Greig, for Hugh D. McIntosh."; Words printed as text on inside front cover.; Publication date approximated from publisher's advertisement (same as back cover's) which appeared on p. 2 of The Register (Adelaide, SA), Wednesday 1 September 1920: "Some of the gems from the Australian mystery musical comedy F.F.F. ... The riddle of F.F.F."; Also available online http://nla.gov.au/nla.mus-vn665170.F.F.F. Riddle of F.F.F. Vocal scor
Black Box 2020
Get PDFThe Black Box is a student based creative publication serving the Embry-Riddle Prescott campus. It is our goal to provide a showcase for the creativity and talent of the Embry-Riddle students. Creative works by members of Embry-Riddle\u27s faculty and staff are included
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