Zobrazeno 1 - 10
of 13
pro vyhledávání: '"J. V. Armstrong"'
Autor:
P. D. Sell, J. V. Armstrong
Publikováno v:
Botanical Journal of the Linnean Society. 120:39-50
The British elms have historically proven to be recalcitrant taxonomically, with at least six different levels of treatment being applied. The taxonomic history of the group and the nomenclature is outlined from the ancient authors up until the prese
Autor:
J. W. BECK, EDWIN COURSE, LUCIEN BASCH, HONORE FORSTER, MURRAY GRAHAM, E. A. BIGGS, BRIAN WAINWRIGHT, ANN CURRIE, R. M.B.H. HACKMAN, J. V. ARMSTRONG, M. D.A. LEE, JAN DEBES
Publikováno v:
The Mariner's Mirror. 78:340-346
Autor:
T B, Layton, J V, Armstrong
Publikováno v:
Proceedings of the Royal Society of Medicine. 23(5)
Publikováno v:
Superconductor Science and Technology. 4:89-92
The temperature variation of the thermal diffusivity of ceramic samples of the YBa2Cu3O7 superconductor was measured using the laser flash method. Melting of the same material was investigated using laser pulses of 7 ms duration at a wavelength of 1.
Publikováno v:
IEEE Transactions on Magnetics. 26:1629-1631
Uniform thin films of polycrystalline alpha -iron were obtained by decomposing a stream of Fe(CO)/sub 5/ in a flow reactor using 193-nm ArF excimer laser pulses. The films are optically flat and 2.6 mu m thick, but they have a spiculate columnar micr
Publikováno v:
Hyperfine Interactions. 46:467-471
A thin amorphous layer on a NdFeB ingot produced by surface melting using a KrF excimer laser, and subsequent self-quenching is shown to improve the corrosion resistance properties of the ingot. X-ray diffraction and conversion-electron Mossbauer con
Publikováno v:
Applied Physics Letters. 50:1231-1233
It is shown that the composition of metallic deposits obtained by photodecomposition of a mixture of ferrocene and nickelocene vapor can be varied by selecting the laser wavelength to match features in the absorption spectra. Iron/nickel ratios of 92
Publikováno v:
SPIE Proceedings.
Laser glazing, using a KrF excimer laser (λ = 248 nm, τ = 22 ns), has been used to improve the corrosion resistance properties of crystallized Fe40Ni38Mo4B18 (Metglas 2826MB) and the permanent magnet material Nd15Fe77B8. The formation of an amorpho
Autor:
J V, ARMSTRONG
Publikováno v:
The Medical press. 218(21)