Zobrazeno 1 - 10
of 25
pro vyhledávání: '"R. J. Horsley"'
Publikováno v:
Global Journal of Geological Sciences; Vol 1, No 2 (2003); 159-168
Rocks of the Ukwortung area of Obudu, southeastern Nigeria consist of pyroxene –biotite –, garnet-biotite-gneisses and meta-utramafite. These rocks were intruded by various granites and pegmatites during the pan-African thermotectonic event. The
Publikováno v:
Canadian Journal of Physics. 30:159-164
The cross sections for the reactions O16(γ, n)O15 and N14(γ, n)N13 have been determined by measurement of the induced positron activities. The oxygen cross-section curve has a slowly increasing initial portion after which it rises rapidly to a maxi
Publikováno v:
Canadian Journal of Physics. 36:140-143
X-ray attenuation coefficients have been measured with a view to ascertaining the magnitude of the nuclear contribution to the total absorption coefficient in the energy range 10 to 25 Mev. The measurements have also yielded values of electronic x-ra
Autor:
L A Fucikovsky, R J Horsley
Publikováno v:
International Journal of Radiation Biology and Related Studies in Physics, Chemistry and Medicine. 4:409-428
SummaryRe-examination of growth-factors for vegetative spores of Oedogonium cardiacum, including the kind and strength of soil extract in the culture-medium, light-intensity, temperature, and gas-bubbling during the controlled growing period, has led
Publikováno v:
The British Journal of Radiology. 41:312-316
The performance of a Varian 6 MeV Linear Accelerator in which the electron beam is bent through 90 deg. is reported. Initially the machine was unacceptable for treatment purposes mainly because of variations in the asymmetry of the X-ray beam. The st
Publikováno v:
Canadian Journal of Physics. 31:636-656
The cross section for the absorption of γ rays by carbon has been determined as a function of photon energy by means of "nuclear detectors". The electronic absorption coefficients in the energy range 12 to 20 Mev. are found to be about 1% lower than
Publikováno v:
Physical Review. 87:756-758
The cross-sectional curves for the reactions ${\mathrm{F}}^{19}(\ensuremath{\gamma},n){\mathrm{F}}^{18}$ and ${\mathrm{F}}^{19}(\ensuremath{\gamma},2n){\mathrm{F}}^{17}$ have been determined by measurement of the induced positron activities. The ($\e
Autor:
N Aspin, R J Horsley
Publikováno v:
The British Journal of Radiology. 29:625-627
One widely used method of calculating isodose curves is that developed by Meredith and Neary (1944). This method depends on calculated values of two constants, M and , based on a now out-dated survey of depth dose and back-scatter values reported by
Autor:
S N, Banerjee, R J, Horsley
Publikováno v:
Radiation research. 54(1)
Publikováno v:
Radiation research. 44(2)