منابع مشابه
Are "Progressive" Mutations Produced by X-Rays?
PAGE 495 1. The physical background of the problem. .................................... 11. Evidence concerning the duality of the X-ray effect on chro 111. A partial separation of the Werent genetic effects of X-rays.. . . . . . . . . . . IV. The production of multiple allelomorphs.. ..... ........................... 507 V. An induced mutation visibly d8erent from a known lass of VI. First at...
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Autografts from spontaneous cancers of mice when replanted into areas previously exposed to an erythema dose of x-rays, failed to grow in the majority of instances (71.4 per cent), while similar grafts inoculated into untreated areas grew in a large proportion of the animals (83.6 per cent). Autografts of spontaneous cancer, established and growing in the skin, disappeared in 76 per cent of ani...
متن کاملUltrasound-Induced Gradient Crystals Observed by High-Energy X-rays
High-energy X-ray scattering (90 keV) has been performed at the high-energy beamline ID15 at the European Synchrotron Radiation Facility, Grenoble, on perfect Si crystals excited by compressional ultrasound waves in the [111] direction. Two-dimensional intensity maps of the 351 Bragg peak reveal a purely longitudinal distortion of the lattice with respect to the applied distortion field, which ...
متن کاملThe relatively high frequency of whole-body mutations compared with fractionals induced by x-rays in Drosophila sperm.
UTATIONS arising in the mature sperm cells of Drosophila might often be M expected to be fractionals, on the assumption that they would, as a rule, involve only one strand of the double strand DNA molecule. The object of the present studies was to determine the proportion of whole-body versus fractional mutations induced by X-rays in the sperm of mature Drosophila, as well as the proportion ari...
متن کاملElectromagnetically induced transparency for x rays.
Electromagnetically induced transparency is predicted for x rays in laser-dressed neon gas. The x-ray photoabsorption cross section and polarizability near the Ne K edge are calculated using an ab initio theory suitable for optical strong-field problems. The laser wavelength is tuned close to the transition between 1s(-1)3s and 1s(-1)3p approximately 800 nm). The minimum laser intensity require...
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ژورنال
عنوان ژورنال: Japanese Journal of Breeding
سال: 1955
ISSN: 0536-3683,2185-291X
DOI: 10.1270/jsbbs1951.5.41