83,550 research outputs found

    The Twenty-second Annual Report of the Trustees of the Cooper Union for the Advancement of Science and Art

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    NOTES: Includes list of students, graduates, officers, trustees, and instructors names. Also includes Report of the Curator J. C. Zachos for the various departments and schools; Report from George W. Plympton, Director of Night Schools; Report of Women's Art Department by Susan N. Carter, Principal of the Women's Art School; and Summary Reports of Departments in Operation.application/pdf; 1881 B&W.pdf; 2,418,728 bytesCanon CanoScan 8800F; 600ppi; 8-bit grayscale; ABBYY FineReader 11 Professional EditionMitsuko Brook

    Observation of cooper pair splitting and andreev bound states in carbon nanotubes

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    In this thesis, we investigate Cooper pair splitting in double quantum dot devices made from carbon nanotubes. We present transport measurements in which the controlled splitting of Cooper pairs dominates the current through such a device, reaching unprecedented splitting efficiencies of up to 90%. In another experiment we use Cooper pair splitting (and a related non-local transport processes) as a tool to investigate Andreev bound states. Andreev bound states are a key concept in mesoscopic superconductivity. They can form due to the penetration of Cooper pairs into a quantum dot, leading to a new type of energy level that differs drastically from conventional particle-in-a-box states

    Experimental observation of the breaking and recombination of single Cooper pairs

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    A.J.F. would like to acknowledge the Hitachi Research fellowship, support from Hitachi Cambridge Laboratory, and support from the EPSRC Grant No. EP/H016872/1. B.W.L. is supported by a Royal Society University Research Fellowship. F.A.P. would like to thank the Leverhulme Trust for financial support.We observe the real-time breaking of single Cooper pairs by monitoring the radio-frequency impedance of a superconducting double quantum dot. The Cooper pair breaking rate in the microscale islands of our device decreases as temperature is reduced, saturating at 2 kHz for temperatures beneath 100 mK. In addition, we measure in real time the quasiparticle recombination into Cooper pairs. Analysis of the recombination rates shows that, in contrast to bulk films, a multistage recombination pathway is followed.Peer reviewe

    John Cooper, Christiane M. Cooper, La formation des jeunes en Grande-Bretagne : l'exemple de l'Écosse, in : Flash formation continue, 15 janvier 1995, n° 397, p. 11-16

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    John Cooper, Christiane M. Cooper, La formation des jeunes en Grande-Bretagne : l'exemple de l'Écosse, in : Flash formation continue, 15 janvier 1995, n° 397, p. 11-16. In: Formation Emploi. N.52, 1995. Numéro spécial : Construction et négociation des diplômes. p. 185

    John Cooper, Christiane M. Cooper, La formation des jeunes en Grande-Bretagne : l'exemple de l'Écosse, in : Flash formation continue, 15 janvier 1995, n° 397, p. 11-16

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    John Cooper, Christiane M. Cooper, La formation des jeunes en Grande-Bretagne : l'exemple de l'Écosse, in : Flash formation continue, 15 janvier 1995, n° 397, p. 11-16. In: Formation Emploi. N.52, 1995. Numéro spécial : Construction et négociation des diplômes. p. 185

    Intelligent Interfaces

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    First karyological analysis of the endemic malagasy phantom gecko matoatoa brevipes (Squamata: Gekkonidae)

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    The genus Matoatoa includes two Malagasy endemic species, M. brevipes and M. spannringi. Due to their cryptic behaviour, the two species are known only from a handful of specimens and have been included in few molecular studies. Here we carried out a molecular barcoding analysis using a fragment of the mitochondrial NADH dehy-drogenase subunit 2 (ND2) and the first chromosomal analysis of M. brevipes. The molecular analysis confirmed the identity of the studied samples as M. brevipes. However, the level of genetic divergence (4% uncorrected p-distance) between our samples and other sequences of M. brevipes, suggests previously unrecognised diversity within the spe-cies. The karyotype of M. brevipes is composed of 2n = 34 chromosomes: the first pair is metacentric, while all the other pairs are telocentric and gradually decreasing in length (Arm Number, AN = 36). C-banding revealed little evidence of centromeric heterochromatin, while NOR-associated heterochromatin was found on the telomeres of a medi-um sized telocentric pair. No heteromorphic chromosome pairs were found in the karyotype of the species, suggesting that putative sex chromosomes are at an early stage of differentiation. Karyological comparisons with closely related species were performed with Christinus marmoratus, and representatives of the genera Phelsuma, Ebenavia, Paroedura and Uroplatus. Comparisons across genera suggest that chromosome diversification in this group of geckos probably occurred by means of chromosome fusions and inversions, leading to a reduction of the chromosome number and the formation of biarmed elements in different species

    Roy W. Culver, Secretary of Y. M. C. A. at Newark, New York, missing since March 28th, 1895.

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    MYSTERIOUS DISAPPEARANCE. Roy W. Culver, Secretary of Y. M. C. A. at Newark, New York, missing since March 28th, 1895. He left home to all appearances perfectly rational. Mysterious letter was received by his relatives at Newark postmarked Syracuse, N. Y., March 29th, stating that he had been disposed of in that city, and signed "A Stranger." His friends fear he may have become suddenly deranged and written the letter himself. He is about 5 feet 4 inches in height, weighs about one hundred and fifty pounds, twenty-five (25) years old, dark brown eyes, black hair and moustache, Roman or full prominent nose dressed in black suit and overcoat and black derby hat, white shirt and turned down collar Wire information to COOPER CULVER, 49 Main Street, Newark, N. Y., Or to CHAS. R. WRIGHT, Chief-of-Police, Syracuse, N. Y. Dated Syracuse, April 2, 1895
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