Results 211 to 220 of about 144,581 (264)
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Electron Irradiation of Polythene
Nature, 1954CONSIDERABLE attention has recently been given to the effects of high-energy radiation on polymeric substances1. The effects would appear to be of the same fundamental character whether X-rays, electron bombardment, or the mixed radiations of the atomic pile are used; it is reported that in the absence of oxygen the dominant reactions are either cross ...
A. C. BASKETT, C. W. MILLER
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Electron Irradiation of Zeolites
MRS Proceedings, 1998AbstractThree different zeolites (analcime, natrolite, and zeolite-Y) were irradiated with 200 keV and 400 keV electrons. All zeolites amorphized under a relatively low electron fluence. The transformation from the crystalline-to-amorphous state was continuous and homogeneous.
S. X. Wang, L. M. Wang, R. C. Ewing
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Irradiation of Polymers by High-Energy Electrons
Nature, 1953THE interaction of high-energy radiation with various forms of matter has been shown to produce a variety of chemical effects, depending upon the system. These effects fall into various classes, among which are oxidation and reduction, polymerization and depolymerization.
E J, LAWTON, A M, BUECHE, J S, BALWIT
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Irradiation of Mucopolysaccharides with Ultraviolet Light and Electrons
Radiation Research, 1959The effect of ultraviolet light and electrons on aqueous solutions of hyaluronic acid, hyaluron sulfuric acid, and heparin was investigated. It was found that irradiation with ultraviolet light causes a decrease in the molecular weight and length of hyaluronic acid prepared from the bovine vitreous body.
E A, BALAZS +3 more
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Degradation of hexachlorobenzene by electron beam irradiation
Journal of Hazardous Materials, 2007Hexachlorobenzene removal efficiencies in different solvents by electron beam irradiation were investigated. Several factors that might affect the removal efficiencies were further examined. At 10 kGy, HCB degradation value was 85.8% in the solvent of acetone:water mixture (20:80, v/v), while at the same dose, the reduction value of 42.6% was achieved ...
Jibiao, Zhang +6 more
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Electron Spin Resonance of Irradiated DNA
The Journal of Chemical Physics, 1963The electron spin resonance (ESR) spectra of free radicals formed in-the sodium salt of desoxyribonucleic acid (DNA) by 1-Mev electrons were examined. Dry samples were irradiated at approximates 200°K and examined at 77°K at microwave power levels below approximates 0.1 mw. At levels below 1 Mrad only a single, rather broad absorption line was seen. At
R, Salovey, R G, Shulman, W M, Walsh
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Gamma and electron irradiation
Physics Bulletin, 1969The UK Panel on Gamma and Electron Irradiation was set up in 1963 by the coming together of industrial organizations, the UK Atomic Energy Authority, the Ministry of Health and interested individuals mainly from the universities. Originally its purposes were connected with the promotion of fundamental and applied research into the use of radiation for ...
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Alteration of Collagen Structure by Irradiation with Electrons
Nature, 1950IN endeavouring to induce shrinkage in collagen by irradiation with electrons, structural alterations in the material were determined from the low-angle X-ray diffraction patterns of samples which had been exposed in the beam of an electron accelerator.
R R, PERRON, B A, WRIGHT
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Electron beam irradiation of dental composites
Dental Materials, 2005Electron beam irradiation can be used to influence the mechanical properties of polymers. It was the aim of this study to investigate whether dental composites can benefit from irradiation in order to achieve increased fracture toughness, work of fracture, hardness or less wear.Two hundred rectangular specimens of five veneering composites were ...
Michael, Behr +3 more
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Luminescence from electron-irradiated sapphire
Physical Review B, 1993Point defects have been produced by electron irradiation in single-crystal \ensuremath{\alpha}-${\mathrm{Al}}_{2}$${\mathrm{O}}_{3}$ from two different sources. Time-resolved luminescence spectroscopy has been used to study emission spectra and atomic-displacement thresholds for the defects.
, Caulfield, , Cooper, , Boas
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