Atenolol ion selective electrodes have been prepared based on phosphotungistic acid using many plasticizers which were:Di-butylphosphate (DBP), Tri-butylphosphate (TBP),o-nitrophenyloctylether (ONPOE) and Di-octylphthalate (DOP).The properties of the prepared electrodes have been studied including: slope, concentration range, detection limit, life time, and pH effect.The electrodes no.
Polyamines, spermidine and spermine constitute a group of cell components that are important in the regulation of cell proliferation and cell differentiation.The enzyme superoxide dismutase catalyzed the breakdown of superoxide anion (O2-) and provides the first line of defense against oxygen toxicity. This work is an attempt to look for possible biochemical marker and causes of breast cancer based on the above polyamines.The levels of spermine and spermidine and superoxide dismutase levels were measured in serum of two women groups.
In the present work, the production of hydrogen fuel from photodecomposition of hydrogen sulfide in aqueous solution of monoethanolamine, using titanium dioxide as photocatalyst has been investigated. The influence of various parameters such as the percentage of monoethanolamine, the load of the catalyst, the effect of addition of sensitizer, the effect of addition of an oxidant and the increase of temperature is also studied. Al photochemical experiments have been carried out in a Pyrex cylinder cell of capacity 35mL.
