The use of molten salts as novel green solvents which may replace conventional media in chemical processes implies a good knowledge of their micro­ scopic structure [1]. As known, high temperature NMR spectroscopy has been applied successfully to molten salts. This technique permits to obtain information about the structure and dynamics of the local environment of most of the nuclei in salt mel...

effluent from ro (reverse osmosis) systems during recovery gradually becomes concentrated and supersaturated with soluble salts such as calcium carbonate (caco3), calcium sulfate (caso4), barium sulfate (baso4) and silica (sio2). thus we were looking for procedures to prevent precipitation of soluble salts on the membrane surface and decrease membrane permeability. therefore, recovery could be ...

We describe a procedure for assay of diaphorase activity in commercial purified preparations and in clinical chemical reagents by use of iodonitrotetrazolium chloride or other tetrazolium salts. The method is based on measurement of the formazan produced by enzymic reduction of tetrazolium salts in the presence of NADH. The assay procedure has been optimized for linear kinetics, simplicity of o...

It is known that physical properties of pyridinium salts can be modulated by their chemical characteristics. Owing to their broad range of applications in biology, biotechnology and chemical research, the design and synthesis of a series of 2,4,6-triarylpyridinium salts with modified structural backbone have been carried out. The main strands of work have included modifications on pyrylium cati...

Accumulation of soluble salts in arid areas which are similar to most regions of Iran is inevitable in soil surface and profile because of low precipitation and high evaporation. High concentration of soluble salts in soil profile caused severe problems for root water uptake thus plant growth stopped. Reducing soil salinity to optimized content by leaching and avoiding soil pounding must be con...

Definitions and forms of salinity All natural waters contain soluble salts. The concentration of the salts determines whether the water is of high quality (drinkable or usable for irrigation without need for special precautions) or of low quality (brackish or saline). Water in the soil also contains soluble salts (sometimes called free or nonattached salts). The amount of salts in the root zone...

Buffalo's milk was fortified with different sources of iron and zinc salts to manufacture of Domiati cheese. It was fortified with ferrous chloride, ferrous sulphate, zinc sulphate and zinc acetate at levels of 40, 60 and 120 mg Fe or Zn/kg milk. All fresh and stored samples (30 and 90 days) of Domiati cheese were analyzed for pH, acidity moisture, TN, SN, fat, lactose, ash and TBA number. No o...