Gamma Rays
Evaluation of The Combined Effects of Hyperthermia, Cobalt-60 Gamma Rays and IUdR on Cultured Glioblastoma Spheroid Cells and Dosimetry Using TLD-100
... 2EMHFWLYH In radiation treatment, the irradiation which is effective enough to control the tumors far exceeds normal-tissues tolerance. Thus to avoid such unfavourable outcomes, some methods sensitizing the tumor cells ...
8
Relative Biological Effectiveness (RBE) of 131I Radiation Relative to 60Co Gamma Rays
... radiobiological concept. Relative biological effec- tiveness (RBE) is deined as the ratio of a dose of standard radiation to the dose of test radiation to produce the same biological effects. Although 250 kVp X-ray was ...
6
Gamma rays in <i>L-B</i> coordinates at CORONAS-I altitude
... of gamma radiation related to trapped particles in the geomagnetic field have not yet been stud- ied in ...use gamma-ray data from the low-altitude CORONAS-I experiment (Kuznetsov et ...the gamma-ray ...
9
Bright gamma-rays source and nonlinear Breit-Wheeler pairs in the collision of high density particle beams
... γ rays and copious secondary pairs are produced during the collision of elec- tron-electron and electron-positron beams for the range of parameters soon to be ...γ rays reaching peak brilliance of 10 27 ...
9
1093 DEVELOPMENT OF RICE SEEDLINGS GROWN FROM PRE-HYDRATED SEEDS AND IRRADIATED WITH GAMMA RAYS Desenvolvimento de plântulas de arroz oriundas de sementes pré-hidratadas e irradiadas com raios gama
... Seedling height is widely used as an index in determining the biological effects of various physical and chemical mutagens. The height of the seedlings was negatively affected by the use of radiation for cultivar BRS ...
8
ATM-mediated transcriptional and developmental responses to gamma-rays in Arabidopsis.
... ATM ( Ataxia Telangiectasia Mutated ) is an essential checkpoint kinase that signals DNA double-strand breaks in eukaryotes. Its depletion causes meiotic and somatic defects in Arabidopsis and progressive motor ...
21
Are we ready to transfer optical light to gamma-rays?
... Ultra-intense laser-matter interactions can generate γ- rays. Several recent experiments have obtained hard X- rays in the laboratory using counter-propagating electron beams and laser pulses 1–5 . A review ...
13
EVALUATION OF GRAY INTENSITY VALUE FOR RELIABLE DIGITIZATION OF DIGITAL RADIOGRAPHY IN DEFECT DETECTION
... In the test piece under consideration the length, breadth, depth is manually calculated using Non contact measuring machine (HAWK SYSTEM 7). The result of this calculation is shown in table 4. .In the digitized ...
6
Braz. Dent. J. vol.20 número3
... selenite; gamma radiation; and administration of sodium selenite plus gamma ...the gamma radiation and selenium/ gamma radiation groups received 8 Gy gamma rays on the lower ...
5
Control of the wax moth Galleria mellonella L. (Lepidoptera: Pyralidae) by the male sterile technique (MST)
... A number of factors must be considered in selecting the dose. If a high dose is selected to induce a correspondingly high level of sterility in a genera- tion, the release will have a very strong suppressive effect on ...
5
Molecular mechanisms of the adaptive response
... strongly induce DNA repair mechanisms (Boreham and Mitchel, 1991). Experiments in various biological sys- tems have been performed to test the hypothesis that DNA repair up-regulation could be involved in the AR. There ...
13
Development of an active detector for radon detection in air
... Using the results from the characterization of the radon source provided by the gamma rays detection, we estimate the time exposure required to perform measurements with different radon [r] ...
76
Braz. J. Phys. vol.39 número1
... The gamma rays de-exciting the yrast and near yrast states in neutron deficient as well as neutron rich nuclei from fusion-evaporation and deep-inelastic reactions and other emission particles have been ...
5
Braz. J. Phys. vol.37 número2B
... for gamma-ray production in microquasars is ...the gamma-ray production. Gamma-rays result from the decay of neutral pions produced in relativistic pp interactions arising from this collision ...
4
Compatibilidades e incompatibilidades entre radiação gama e óxido de etileno como métodos sucessivos de esterilização.
... Para a recuperação das referências foi utilizada a busca eletrônica nas bases: LILACS, PubMed/MEDLINE e SciELO. Como descritores, foram admitidos os termos: Gamma rays, Ethylene Oxide e Sterilization. Como ...
5
MATERIALS AND METHODS Gamma Radiation
... culture. Gamma irradiation induces various physiological and biochemical alterations in ...of gamma rays disturbs the hormone balance, leaf gas-exchange, water exchange and enzyme activity (Stoeva ...
6
Comparison of base substitutions in response to nitrogen ion implantation and
... Comparison of the specificity of base substitutions To compare the mutagenicity of the two mutagens, a total of 100 independent mutants (50 each) in rpoB genes were sequenced. The frequency of total detected nitrogen ...
7
Response of large area avalanche photodiodes to low energy x rays
... FIG. 3. Working principle of avalanche photodiodes based on a p + -i-p-n + doping profile. The weakly doped intrinsic part (II) serves as conversion re- gion for most incoming x-rays (case 1). Photoelectrons ...
7
The gamma–Weibull distribution revisited
... what follows we write ξ ∼ gW (θ) when the r.v. ξ has the gamma–Weibull distribution with parameter θ. Leipnik and Pearce obtained the characteristic function and the moments of gamma–Weibull distribu- tion. ...
8
Variability of barley aleurone layer induced by X-rays
... abstract. A series of Hordeum vulgare cultivars was irradiated by X-rays to induce mutations in endosperm. Many structural defects of endosperm were revealed in plants irradiated 8 DAF. Change of a cell cycle was ...
3