The radiation damage werealso studied and the fact that radiation damage in α-Si_3N_4 is easier to be producedthan that in β-Si_3N_4 may indicate that β-Si_3N_4 is much stronger than α-Si_3N_4.Grainboundary in Si_3N_4 ceramics were studied in detail;
Radiation damage and its detailed thermal annealing behavior in a-A12O3 irradiated at the equivalent dose, respectively, by 5.28×1016 cm -2 85 MeV 19F ions and by 3×1020 cm -2 En ≥ 1 MeV neutrons have been investigated by the positron annihilation lifetime technique.
The application of this technique for the identification of radiation injuries and repair related genes will help to understand the molecular mechanisms of these pathological processes,as well as provide guidance for prevention and therapy of radiation injuries.
The results showed that radiation injuries were increased with caffeine treatments both before and after irradiation, the injuries of the treatment before irradiation were more severe than that after irradiation,and the severity was increased with the increasing concentration of caffeine solutions.
In order to evaluate the changes in T cell subsets after acute irradiation injury, and investigate the mechanism of deficiency of cellular immunity in acute irradiation syndrome, Balb/c mice were exposed to a single total body irradiation of 5Gy gamma rays from a 60 Co source.
Radiation damage decreases phosphorus content in all studied organisms and is a marker of disturbed conjugated oxidative phosphorylation.
The revealed macro- and microelements disbalance in spleen, liver, kidneys, and lungs can be considered as a test for primary biological response to radiation damage.
The relationships that help evaluate expected decreases in light collection from plastic scintillators of cylindrical shape, due to radiation damage, were obtained for an arbitrary irradiation mode.
Studying the Kinetics of Radiation Damage in PWO Crystals for the CMS Electromagnetic Calorimeter (CERN)
Unfortunately, the available data on radiation effects do not allow us to reliably estimate the resistance of a particular diagnostic component to radiation damage from neutrons, γ rays, and other particles.
Post-therapeutic radiation injuries of the nervous system
Clinical manifestations after acute complex radiation injuries
The radiation injuries were found in the same location as tumors most commonly treated with radiation: face, scalp, chest wall, sacrum and the abdominal wall etc.
A concerted effort on the part of professional medical organizations and regulatory agencies will be required to train fluoroscopy users to prevent physicians from unwittingly imparting serious radiation injuries to their patients.
The regenerative ability of haemopoietic organs during combined radiation injuries has not been adequately investigated.
Irradiation injury temporarily induces enhancement of APN/CD13 peptidase activity on aorta-gonads-mesonephros (AGM)-derived stro
This study was designed to investigate the expression of aminopeptidase N (APN)/CD13 on intraembryonic AGM stromal cells, and the change of its enzymatic activity after irradiation injury.
The enzymatic activity of APN/CD13 decreased temporarily after irradiation injury, then increased to higher level 4 h after irradiation, and it returned to the pre-irradiation level 24 to 48 h after the irradiation.
The enzymatic activity of APN/CD13 was temporarily enhanced after irradiation injury, which might be one of the compensatory mechanisms that promote the hematopoietic recovery after irradiation.
In order to study changes in DNase I activity as a result ofβ-irradiation injury it was necessary to irradiatethrough the hair of one flank with 4700 repβ (90Sr-90Y).