all desalination methods which are currently used have limitations. a newly designed instrument by zare a.m. was tested and compared with currently used method in razi vaccine and serum research institute(rvsri). samples of anti snake venom for desalination was provided by department of anti-serum, rvsri. parameters included in this study were time and water consumption during desalination proc...

The immune bodies of antipneumococcus serum are completely precipitated by 38 to 42 per cent. saturation with ammonium sulphate. They are incompletely precipitated by (a) ammonium sulphate in less than 38 per cent. saturation, (b) saturation with sodium chloride, (c) dilution and saturation with carbon dioxide, (d) removal of crystalloids by dialysis. The immune bodies of antipneumococcus serum...

Removal and recovery of nitrogen with the Aqua2®N-process demonstrated The overall goal RE-Fertilize project was to demonstrate a new removal process for nitrogen, producing product suitable fertilizers, example. In project, demonstration plant has been built, in operational environment rate >95% ammonium nitrogen. produced sulphate evaluated its agronomic effect proven. A conceptual design ...

The phytoflagellate Prymnesium parvum has been reported in Europe (Otterstroem et al., 1939, Liebert et al., 1920), where it occurs sporadically and causes mass mortality among fishes. In 1947 Prymnesium parvum first appeared in Israel fish ponds, rapidly spreading through regions where water was brackish. Since then it has caused extensive damage to the fish breeding industry and is now the mo...

An extracellular cold active lipase from Pseudomonas sp. VITCLP4 was concentrated by two methods, ammonium sulphate precipitation and ultrafiltration. Ammonium sulphate precipitation with 40% saturation was found to give good results with 125-fold partially purified lipase and yield of 63%. Further purification by DEAE-Sephadex ion exchange chromatography resulted in 4.6-fold purified enzyme wi...

The aim of the present study was to assess the effects of ammonium sulphate exposure on the antioxidant defence system and lipid peroxide concentration in the testes of wistar rats, as well as the examine possible protective role of zinc from the adverse effects of ammonia .The LD50 of Ammonium Sulphate and Zinc Chloride were determined, after toxicity testing evaluation. It is 91.5 mg/kg body ...

Effects of initial ammonium sulphate concentration on growth and glycerol production kinetics of two endogenic wine yeast strains, Saccharomyces cerevisiae Kalecik 1 and Narince 3, were investigated in a batch system. Maximum specific growth rates for Kalecik 1 and Narince 3 were obtained at initial concentrations of 1.0 g/L, and 0.8 g/L ammonium sulphate, respectively. Further, maximum specifi...

To elucidate a functional significance of submaxillary gland, a simple in vivo biological assay for uterine growth inhibitory activity of submaxillary gland extract has been developed based on its inhibition of serum gonadotropin induced uterine growth of immature mice. Regression of weight gain after administration of serum gonadotropin was found sigmoidal against protein concentration of subm...

IN this paper, 'which is the concluding one of the series, we are concerned with the fractionation, by means of a neutral electrolyte and electrodialysis, of a few sera which have already been investigated in the ultracentrifuge [McFarlane, 1935, 1, 2, 3]. The particular objects in view have been (1) to investigate the composition of the globulin fractions obtained by a single precipitation wit...