Introduction: This study was designed to evaluate dosimetric parameters such as rectal dose, bladder dose, integral dose (ID), homogeneity index (HI) and conformity index (CI) in various treatment plans for prostate cancer. Materials and Methods: Pelvic computed tomography (CT) scans of 27 patients were acquired and transferred to the RTDosePLAN treatment planning system. For each patient, 8 co...

Background: Hydrogen peroxide (H2O2), produced by gamma ray irradiation to watery solution, was used as an analytical parameter for dosimetry of cobalt-60 (60Co) radiation. Materials and Methods: Detection of the produced H2O2 was carried out using two methods: an amperometric biosensor fabricated by immobilization of anthraquinone 2-carboxylic acid modified horseradish peroxidase on glassy car...

Radioactive wastes are products of nuclear activities around the world. cobalt is one usually found radionuclide in waste. It crucial to separate radioactive from aqueous media. The removal (Cobalt-60) was investigated using molecular sieves this study. structure comprises a microporous and aluminosilicate framework. Due their chemical composition structures have excellent sorption capacities. ...

Cobalt doped Zinc ferrites, CoxZn1-xFe2O4, (x = 0, 0.2, 0.4, and 0.6) were prepared by chemical solution method using metallo-organic precursors. The crystalline structure, microstructure, magnetic and dielectric properties of the samples were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM) and impedance analyser respectively. All...

A pixelated silicon detector, developed originally for particle physics experiments, was used a beam profile measurement of cobalt-60 (Co-60) irradiator in water phantom. The compared to measured with pinpoint ionization chamber. differences the pixel detector and chamber relative profiles were within approximately 2% maximum, after calculating correction factors Monte Carlo simulations maximum...

an extensive study of fischer-tropsch synthesis (fts) on alumina-supported cobalt catalysts with different amounts of cobalt is reported. up to 40 wt % of cobalt, is added to the catalysts by impregnation method. the effect of the cobalt loading on the reducibility of the cobalt oxide species, dispersion of the cobalt, average clusters size, water-gas shift (wgs) activity and activity and selec...