water contaminated with petroleum hydrocarbons has harmful effects on health, economy and environment. in this study, photolysis process for treating petroleum hydrocarbons was investigated. hence different initial cods with different uv-c radiation power were examined. based on the energy consumption per unit of cod removed, cod of 350 mg/l and radiation power of 80 w were chosen as the optimu...

In deep space astronauts are usually exposed to doses of ~ 1 mSv/day of charged particles, including HZE. Due to the exposure to GCR (e.g. during a mission to Mars), each cell nucleus of an astronaut would be traversed by a proton or by a secondary electron every few days, but only by an HZE ion every few months [1]. For this reason, besides the clustered properties of the incoming radiation on...

by producing undistorted three-dimensional images of the area under examination, cone-beam computed tomography (cbct) systems have met many of the limitations of conventional radiography. these systems produce images with small field of view at low radiation doses with adequate spatial resolution that are suitable for many applications in endodontics from diagnosis to treatment and follow-up. t...

radiation damage is to a large extent caused by overproduction of reactive oxygen species (ros). radioprotectors are agents or substances that reduce the effects of radiation in healthy normal tissues while maintaining the sensitivity to radiation damage in tumor cells. radioprotectors are agents or substances that reduce the effects of radiation in healthy normal tissues while maintaining the ...

Mobile phone use and wireless communication technology have grown explosively over the past decades. This rapid growth has caused widespread global concern about the potential detrimental effects of this technology on human health. Stem cells generate specialized cell types of the tissue in which they reside through normal differentiation pathways. Considering the undeniable importance of stem ...