The paper presents data on changes in strength properties, including microhardness, crack resistance, bending and wear of BeO ceramics as a result irradiation with heavy accelerated ions. following types ions were selected ions: O2+ (28 MeV), Ar8+ (70 Kr15+ (147 Xe22+ (230 MeV). Radiation doses 1013 -1015 ion/cm2 , which make it possible to assess the effect both single defects arising from rad...

algae have been proven efficient biological vectors for heavy metal uptake. in order to further study their biosorption potential, two strains spirogyra sp. and spirulina sp. have been studied under different initial metal concentrations. in recent years, the biosorption processes have been studied extensively using microbial biomass as biosorbent for heavy metal ions removal. in these studies...

1. Space Radiation Environment and Modeling • The Earth’s geomagnetic field and its effect on high-energy, ionizing particles including electrons, protons, and some heavy ions • The Earth's trapped radiation environment and Trapped radiation models, the characteristics of the Van Allen belts and South Atlantic Anomaly • Effects of trapped radiation on spacecraft and components • Space Weather c...

One of the most important aims of each treatment planning system is the ability of delivering a target conformal dose distribution. Developed and successful used within the heavy ion therapy pilot project, the TReatment plannIng for Particles ( TRiP )[1] is characterised by the capability of delivering exact results in relatively short time, making it possible to rapidly verify and, if necessar...

algae have been proven efficient biological vectors for heavy metal uptake. in order to further study their biosorption potential, two strains spirogyra sp. and spirulina sp. have been studied under different initial metal concentrations. in recent years, the biosorption processes have been studied extensively using microbial biomass as biosorbent for heavy metal ions removal. in these studies,...

It has long been suggested that inactivation severely effects the probability of mutation by heavy ions in mammalian cells. Heavy ions have observed cross sections of inactivation that approach and sometimes exceed the geometric size of the cell nucleus in mammalian cells. In the track structure model of Katz the inactivation cross section is found by summing an inactivation probability over al...

Background & Aims of the Study: Heavy metals discharge to environment is a worldwide problem growing in scale. When they accumulate in the environment and in food chains, they can profoundly disrupt biological processes. Peganum Harmala Seeds (PHS) was used as a bio-sorbent, using a continuous system for removing Pb2+, Co2+, Ni2+ and Cu2+ ions from aqueous solutions. ...

The delta-ray theory of track structure, applied earlier to such 1-or-more hit detection systems as the inactivation of dry enzymes and viruses, the NaI(Tl) scintillation counter, and nuclear emulsion, is extended to the silver activated phosphate glass dosimeter, the LiF thermoluminescent dosimeter, the creation of free radicals in solid biological substances, solid and liquid organic scintill...

Dielectronic recombination (DR) of beryllium-like Xe was investigated by using the ESR electron cooler as a free electron target. Three series of resonances associated with excitations from the 2s ground state could be measured (Fig. 1), namely 2s → 2s2p P1, 2s → 2s2p P1 and 2s → 2s2p P2. The resonances of the 2s2p P2 nj manifolds are much weaker than the ones of the other series. No signatures...