A one-year study of the EPR signal of g-irradiated (Co) L-a-alanine with simultaneous monitoring of the cavity Q-factor was undertaken. The widespread opinion that the EPR signal remains absolutely stable under normal laboratory storage conditions is inaccurate. At 0% humidity, the signal can be regarded as stable within 21% of its initial value for 6 months for 1 and 10 kGy doses, but for only...

PURPOSE We have been developing a fast-neutron spectroscopic technique to quantitatively image the distribution of elements in the body using quasi-monochromatic neutron beams. Previously, we demonstrated the ability of the technique to quantify specific elements in the liver and breast while limiting radiation dose to clinically acceptable levels. Here we present the results of a physical dose...

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 useful indic...

background: the compositions of ferrous sulphate, agarose and xylenol orange dye (fax) and ferrous sulphate, gelatin and xylenol orange dye (fgx) in solution of distilled water and sulphuric acid are two tissue-equivalent gel dosimeters. ionizing radiation causes oxidation of fe2+ ion to fe3+ ions which diffuse through the gel matrix and blur the image of absorbed dose over a period of hours af...

Process engineers can be faced with the task of understanding and optimizing the performance of an existing liquid-liquid extraction (extraction) column. Often times, an extraction column has been operating many years, and the performance is not well understood by the personnel responsible for its operation. Since this technology is not treated comprehensively during most under-graduate Chemica...

introduction: the mechanism of action and metabolism of clozapine, a complex drug used in psychopharmacology, is not completely understood. the effects of this compound in human body are related to some interactions with serotonin and dopamine neurotransmitter receptors. to further elucidate the mechanism of action and to support ongoing drug metabolism studies, [14c] clozapine with suitable ra...