Zobrazeno 1 - 10
of 96
pro vyhledávání: '"G S, Hall"'
Publikováno v:
Plant Pathology. 59:1152-1158
The species composition of a plant community can affect the distribution and abundance of other organisms including plant pathogens. The goal of this study was to understand the role of host diversity in the transmission of two Barley yellow dwarf vi
Autor:
D. P. Lonie, G. S. Hall
Publikováno v:
Journal of Physics A: Mathematical and General. 39:2995-3010
This paper considers 4-dimensional manifolds upon which there is a Lorentz metric, h, and a symmetric connection and which are originally assumed unrelated. It then derives sufficient conditions on the metric and connection (expressed through the cur
Autor:
G. S. Hall, C. R. Chambliss
Publikováno v:
Applied Spectroscopy. 58:1334-1340
Energy dispersive X-ray fluorescence (EDXRF) was used to nondestructively determine the elemental composition of current-size $10 United States Federal Reserve Notes (FRN) from series 1928 to series 2003. The X-ray spectra from all the bank notes wer
Autor:
E. A. Murphy, G. S. Hall
Publikováno v:
Bulletin of Environmental Contamination and Toxicology. 65:314-321
Autor:
G S Hall
Publikováno v:
Classical and Quantum Gravity. 17:3073-3076
It is shown that the only conformal or projective vector fields admitted by the Reissner-Nordstrom metric are its standard Killing vector fields.
Autor:
Karen C. Carroll, Donna M. Hacek, G. S. Hall, M. A. Pfaller, L. B. Reller, Ellen Jo Baron, J. K. Reynolds, S. Munro, L. M. Mann, Peter H. Gilligan, A. Robinson, Lance R. Peterson, F. Cockerill, Lizzie J. Harrell, F. A. Meier, K. Wait, Sharon Allen, R. N. Jones, P. Walsh, G. I. Woods
Publikováno v:
Diagnostic Microbiology and Infectious Disease. 35:143-151
Autor:
G. S. Hall, M S Capocci
Publikováno v:
Journal of Mathematical Physics. 40:1466-1478
Three-dimensional manifolds admitting Lorentz metrics are studied. The first part of the paper gives a classification of the Ricci and curvature tensors and also of the conformal (Schouten–Cotton–York) tensor. The second part of the paper investi
Autor:
G. S. Hall
Publikováno v:
General Relativity and Gravitation. 30:1099-1110
The motivation for this paper is the recent interest in the study of symme tries in general relativity and its purpose is to discuss the mathematical foundations required for such a study. The general (formal and informal) ideas of what constitutes a
Autor:
I. M. Roy, G. S. Hall
Publikováno v:
General Relativity and Gravitation. 29:827-835
Those space-times admitting special conformal vector fields and those admitting special projective vector fields have recently been studied. In this paper these two classes of space times are shown to be very closely related to each other. Certain un
Autor:
G. S. Hall
Publikováno v:
Plant Pathology. 45:1009-1026
Inadequate species definitions present a serious problem to the pathologist working in plant hygiene or quarantine which demands urgent attention. Species concepts in the downy mildews have not kept pace with developments in evolutionary and molecula