Objective: Radiosensitisation caused by titanium dioxide nanoparticles (TiO2-NPs) is investigated using phantoms (PRESAGE® dosimeters) and in vitro using two types of cell lines, cultured human keratinocyte (HaCaT) and prostate cancer (DU145) cells. Methods: Anatase TiO2-NPs were synthesised, characterised and functionalised to allow dispersion in culture-medium for in vitro studies and halocar...

The response of high-dose-range chemical dosimeters is dependent on the dosimeter temperature during irradiation. Typically, irradiation temperatures are estimated by measurements, calculations, or some combination of the two. Then using the temperature coefficient for the dosimetry system, the dosimeter response is adjusted or corrected to be consistent with the irradiation temperature for the...

In order to increase the rate of gas absorption, chemical reaction in the liquid phase is considered. The purpose of this paper was to simulate gas absorption process by a liquid film over a spherical packing incorporating eddy viscosity and diffusivity. Second order chemical reaction for two different cases (fast and slow) were considered. The system partial differential equations obtained...

abstract. topological indices are the numerical value associated with chemical constitution purporting for correlation of chemical structure with various physical properties, chemical reactivity or biological activity. graph theory is a delightful playground for the exploration of proof techniques in discrete mathematics and its results have applications in many areas of sciences. one of the us...

The fading of radiation-sensitive p-channel metal-oxide-semiconductor field-effect transistors (known as RADFETs or pMOS dosimeters) over a long time period 10 years after irradiation has been investigated. Fading is, in addition to sensitivity, another characteristic radiation dosimeters. It is considered the recovery threshold voltage irradiated dosimeters during ambient annealing without gat...

In this paper we report on first results obtained using polycrystalline CVD diamond detectors irradiated with heavily ionizing particles at GSI. At the UNILAC accelerator, ions with energies near the Bragg-Peak have been stopped inside the material whereas at the heavy-ion therapy facility of GSI these detectors are operated in transmission mode and have been studied in a carbon beam from SIS w...