Výsledky vyhledávání - "R. A. Melville"

Helimagnetism and field-induced phases in random Gd64Sc36single crystals

Autor: J.A. Mendes, M. A. Salgueiro da Silva, R J Melville, J. B. Sousa, C S de Abreu, M.M. Pereira de Azevedo, Jorge Moreira, Stuart B. Palmer

Publikováno v: Journal of Physics: Condensed Matter. 11:7115-7124

We report magnetization, neutron diffraction and elastic constant measurements of the single-crystal rare earth alloy Gd64Sc36 as a function of magnetic field. For an a-axis field the material exhibits transitions from helix to fan to basal plane fer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::962925caca681358dbfb2b88f7cd7956
https://doi.org/10.1088/0953-8984/11/37/309

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Optical time domain reflectometer

Autor: R T Melville, M. D. Rourke, S. M. Jensen, M. K. Barnoski

Publikováno v: Applied optics. 16(9)

By using an optical time domain reflectometer a new measurement technique which allows displaying the length dependence of the fiber attenuation by analyzing backscattered light has been developed. This paper compares the backscatter and insertion-lo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f406451b37cf1d5862487ce27870920f
https://pubmed.ncbi.nlm.nih.gov/20168934

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The helical-ferromagnetic phase transition in Gd-Y alloys

Autor: R. J. Melville, S.B. Palmer, Garry J. McIntyre, R S Eccleston

Publikováno v: Journal of Physics: Condensed Matter. 4:10045-10052

The authors have carried out a neutron diffraction study on a single crystal of Gd66Y34 to examine the behaviour of the helical q-vector close to the helix-ferromagnet II transition. A novel approach to the peak fitting of the diffraction peaks has e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbc13b19e4e562a9d2d203ae4ca3b7f2
https://doi.org/10.1088/0953-8984/4/49/031

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Random field effects and breakup of helimagnetism in Gd60Y60

Autor: S. Bates, Garry J. McIntyre, Stuart B. Palmer, R. J. Melville

Publikováno v: Journal of Magnetism and Magnetic Materials. 116:267-272

A neutron diffraction study of a single-crystal Gd 60 Y 40 alloy has revealed a severe broadening of the coherent helimagnetic satellite peak widths below 60 K, indicating a decrease in the coherence length of the helimagnetic structure along the hex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2ad28a1f12c490cd67fbdc76c28b07ce
https://doi.org/10.1016/0304-8853(92)90171-j

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History of NIST's contributions to development of standard reference materials and reference and definitive methods for clinical chemistry

Autor: R, Schaffer, G N, Bowers, R S, Melville

Publikováno v: Clinical chemistry. 41(9)

The issuance of cholesterol as a Standard Reference Material (SRM) in 1967 started the National Institute of Standards and Technology (NIST; then named the National Bureau of Standards) on a major effort to help clinical laboratories establish and im

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::afcf95a5326cc6e71d03d02c26a90627
https://pubmed.ncbi.nlm.nih.gov/7656442

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Pseudonovibos spiralis : epitaph

Autor: Gary J. Galbreath, R. A. Melville

Publikováno v: Journal of Zoology. 259:169-170

Timm et al. (2001) argue that Pseudonovibos spiralis actually exists as a new bovine species, and identify as such two frontlets in the Kansas Natural History Museum, U.S.A. This is not the first time these specimens have been the subject of dubious

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::379e61c2ce7f538c8a6f30fb2b8e9900
https://doi.org/10.1017/s0952836902003102

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