Results 221 to 230 of about 452,384 (268)

Dependence of the Oxygen Enhancement Ratio on Neutron Energy

Nature, 1967
THE data reported by Barendsen and Broerse1 for the oxygen enhancement ratios in human cell cultures subjected to neutron radiation have prompted us to report the values which we have obtained for a completely different biological system—that of induction of somatic mutation in the staminal hair cells of a diploid clone (02) derived from a variety of ...
J A, Dennis, S J, Botot
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Modelling the energy-output ratio

Energy Economics, 1984
Abstract The elasticity of energy use with respect to national output has been estimated by various methods with sometimes seemingly contradictory results. This study attempts to reconcile these various estimates by modelling the energy–output ratio and deriving the corresponding cross-section and time-series elasticities from this model.
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The oxygen enhancement ratio for high energy neutrons

The British Journal of Radiology, 1977
Neutron beams currently used for radiotherapy range from 16 MeV deuterons on beryllium at Hammersmith to 67 MeV protons on beryllium at the Fermilab; over this range the oxygen enhancement ratio (OER) appears to be constant at about 1.6 (Hall, 1975a, b; Hall et al., 1974b, 1975, 1977).
E J, Hall, C R, Geard, S, Povlas, M, Astor   +3 more
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Astrophysical Neutrinos: Flavor Ratios Depend on Energy

Physical Review Letters, 2005
Electromagnetic (and adiabatic) energy losses of pi's and mu's modify the flavor ratio (measured at Earth) of neutrinos produced by pi decay in astrophysical sources, Phi v: phi v mu: phi v tau, from 1:1:1 at low energy to 1:1.8:1.8 at high energy. The transition occurs over 1-2 decades of v energy, and is correlated with a modification of the neutrino
Tamar, Kashti, Eli, Waxman
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Energy-Ratio-Based Measure of Elastic Anisotropy

Physical Review Letters, 2019
Many materials are anisotropic. However, there is no widely accepted measure for characterizing the degree of elastic anisotropy. Here, assuming that the limiting case of extreme anisotropy should possess a positive semidefinite stiffness matrix, we propose three criteria to evaluate measures of anisotropy and show that the existing measures in the ...
Yaopeng, Fang, Yongqing, Wang, Haroon, Imtiaz, Bin, Liu, Huajian, Gao   +4 more
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Energy and protein : energy ratio

1997
International ...
Cuzon, G., Guillaume, J.
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Oxygen enhancement ratio for high-energy neutrons

The British Journal of Radiology, 1980
There is some uncertainty about the oxygen enhancement ratio (OER) for mammalian and plant cells irradiated with high-energy neutrons. With neutrons generated by 80 MeV deuterons on Be and 101 MeV protons on Be widely varying results have been reported (Hall et al., 1977; Hall and Durand, 1980; Harrison et al., 1976) and there is at present no ...
D K, Bewley, B, Cullen, H, Walker, B C, Page   +3 more
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Practical application of energy consumption ratio test

Proceedings International Test Conference 2001 (Cat. No.01CH37260), 2002
Dynamic I/sub dd/ test techniques are obtaining more attention from both academia and industry, because of their ability to further improve product quality beyond tests based primarily on I/sub ddq/ test and other traditional test techniques. Normal process variations in wafer fabrication decrease the defect coverage and affect the application of ...
Eric Peterson, Wanli Jiang
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Biofuels, fossil energy ratio, and the future of energy production

Physical Sciences Reviews, 2017
AbstractTwo hundred years ago, much of humanity’s energy came from burning wood. As energy needs outstripped supplies, we began to burn fossil fuels. This transition allowed our civilization to modernize rapidly, but it came with heavy costs including climate change.
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Dark energy from ratio gravity

2023
The theory of Ratio Gravity (RG) proposes that the curvature of 3+1 spacetime originates from a deformation of a Cross Ratio, where similar mathematical structure to general relativity emerges. This paper (in the first half of the thesis) studies RG using the framework of the Newman-Penrose spin formalism. After proposing the general formalism, we move
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