منابع مشابه
Treatment of Diseases of the Skin by Ultra-violet Rays.
ULTRA-VIOLET rays are stated to have a general tonic effect on the sympathetic, and it has been denlonstrated that a general irradiation produces an increase of the calcium and phosphorus ions in the blood. Growing rats subjected to daily irradiation by the mercury-vapour lamp increase in weight, and their total calcium content goes up considerably in excess of the controls. It would appear tha...
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Ultra-violet absorption cross sections of isotopically substituted nitrous oxide species: NNO, NNO, NNO and NNO P. von Hessberg, J. Kaiser , M. B. Enghoff, C. A. McLinden, S. L. Sorensen, T. Röckmann, and M. S. Johnson Department of Chemistry, University of Copenhagen, Copenhagen, Denmark Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division, Heidelberg, Germany now at: Departm...
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We establish the ultraviolet finiteness of various classes of noncommutative gauge theories.
متن کاملUltra-Violet Behavior of Bosonic Quantum Membranes
We treat the action for a bosonic membrane as a sigma model, and then compute quantum corrections by integrating out higher membrane modes. As in string theory, where the equations of motion of Einstein’s theory emerges by setting β = 0, we find that, with certain assumptions, we can recover the equations of motion for the background fields, i.e. Rμν +(1/4)FμαβγμF αβγ ν = 0 and DFαβγ = 0. for t...
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Radiation from the sun has different effects upon living organisms. It has been found, for instance, that ultra-violet rays of a certain wavelength present in the radiation from the sun stop the multiplication of bacteria and other micro-organisms. Good use can be made of this, without having to depend upon sunlight, by employing a low-pressure, mercury-vapour lamp emitting rays which have a sp...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1931
ISSN: 0007-1161
DOI: 10.1136/bjo.15.12.717