College of Science

Amiloride hydrochloride ion-selective electrodes were constructed in polymeric membrane by using PVC and based on the use of active ion-pair (Amiloride - phosphotungstate) and the other ion pair (Amiloride-tetraphenylborate) with the following plasticizers: Di-butyl phthalate (DBPH), Di-octylphthalate (DOP) and Tri-butyl phosphate (TBP). The properties of these electrodes were studied, including: slope, correlation coefficient, concentration range, detection limit and life time.

 This  study  is concerned  with  the  synthesis  and characterization  of two new  series  3-(4-pentoxyphenyl)-5-(4΄-substituted phenyl)-1,2,4-oxadiazole and 3-(4-pentoxy benzoyloxyphenyl)-5-(4΄-alkoxy benzoyloxy phenyl)-1,2,4oxadiazole of fifteen new compounds.The first series 3-(4-pentoxyphenyl)-5-(4΄-substituted phenyl)-1,2,4oxadiazole of ten compounds with the structural formula (6)a-jThis was prepared as following: at first by reaction of p-hydroxy benzaldehyde (1) with hydroxyl amine hydrochloride to give p-hydroxy benzaldoxime (2) which then dehydrated by acetic anhydride to give p-

The current study has been done to detect the physiological and environmental factors that influence the kidney stones formation (calcium oxalate stones and uric acid stones).Biochemical tests in sera and 24 hrs. urine include calcium, phosphorus,potassium, sodium, magnesium, citrate, oxalate, urea, creatinine, glucose,cholesterol, pH and total urine volume were measured in evaluation of nephrolithasis.