a novel potentiometric ion-selective pvc membrane sensor for analysis of atorvastatin (at) in pharmaceutical preparations based on atorvastatin-(tetraphenyl borate), (at-(tpb)2) as sensing element, tetraphenyl borate as additive and tris-2-ethyl-hexyl phosphate (top) as plasticizer solvent was prepared. the electrode shows a good nernestian response over the concentration range of 0.09–5586 µg ...

background: there are many preparation regimens for bowel cleansing. given their adverse effects, none of them have been considered perfect by the endoscopists. the aim of this study was to compare the effects of two bowel cleansing regimens on clean colonic preparation the subjects'well being and electrolyte balance. materials andmethods: atotal number of 280 patients were randomly assigned to...

various and complex human activities in geographical contexts need proper ground if at most efficiency is to be achieved. land preparation regulates the relationship between human, space, and human activities. land preparation has various dimensions related to value system, political, scientific, artistic, and defense-security aspects. one of the most important dimensions of land preparation is...

the background of consideration to local and national characteristics of land preparation management in development plans is recently and also of old. it is of old because it is traced back to human presence in land area and definition of the land and curiosity about life. it is recent because it has been begun in the last 100 years and it started mainly in the half of the past century and afte...