A new polyvinyl choloride (PVC) membrane sensor for cerium (III) was prepared based on 4,13-didecyl-1,7,10,16-tetraoxa-4,13-diazacyclooctadecane (kryptofix22DD) as an ionophore. The sensor exhibites a linear concentration range of 1.0×10-6to 1.0×10-1M, with a Nernstian slope of 18.0±1.0 mV/decade, and a detection limit of 9.7×10-7M. It has a fast response time (5 s) and can be used for two mont...

A new polyvinyl choloride (PVC) membrane sensor for cerium (III) was prepared based on 4,13-didecyl-1,7,10,16-tetraoxa-4,13-diazacyclooctadecane (kryptofix22DD) as an ionophore. The sensor exhibites a linear concentration range of 1.0×10-6 to 1.0×10-1 M, with a Nernstian slope of 18.0±1.0 mV/decade, and a detection limit of 9.7×10-7 M. It has a fast response time (5 s) and can be used for two m...

Three different high-performance liquid chromatographic (HPLC) techniques, i.e. affinity, ion exchange, and gel filtration chromatography, have been used to purify polyclonal antibodies from bovine serum. Polyclonal antibodies were obtained from animals infected with bovine leukaemia virus, which was confirmed by AGID and ELISA tests. Precipitation of the antibodies by ammonium sulphate prior t...

The use of potassium ferrate(VI) as an alternative water treatment chemical for both drinking water and sewage treatment has been studied and is reported in this paper. The performance of potassium ferrate(VI) was evaluated in comparison with sodium hypochlorite (NaOCl) and NaOCl plus ferric sulphate (FS) and aluminium sulphate (AS). The effects of the dosages of ferrate(VI), NaOCl and FS/AS an...

INTRODUCTION Patients with phaeochromocytoma have haemodynamic instability during adrenalectomy. CLINICAL PICTURE A case showing major swings of blood pressure during tumour handling. TREATMENT Magnesium sulphate infusion alone failed to prevent severe hypertension. OUTCOME The patient had to be given phentolamine and sodium nitroprusside to control the severe hypertension. CONCLUSION T...

the deleterious effects of morphine sulphate addiction on the central nervous system are welldocumented. previous studies have shown that the passage of morphine from the placenta barrier caninfluence the normal development of embryos, such as those of humans, by specific mechanisms. so, forthe first time, for the purpose of investigating the effects of morphine sulphate on pregnant animals,thr...

The paper presents the investigations on absorbability of ferri/ferrous impurities found in commercial grade sodium sulphide. The later product is unsuitable for the manufacture of pharmaceutical grade chemicals and dyes chemicals.The author have carried out experiments on the use of precipated barium sulphate as an adsorbent in different propotions in the aqueous solution of commercial grade s...