The problem of selecting a method for ensuring the reliability unprepared fluid transport facilities an in presence carbon dioxide is considered. Carbon corrosion one dangerous types damage to field and main pipelines. It has been shown that dynamic autoclave tests should be carried out during staged laboratory order determine intensity select optimal protection. A hypothesis about imperfection...

Olive pomace, a solid residue generated during olive oil production process and rich source of phenolic compounds, was dried defatted to obtain pomace in monounsaturated fatty acids with 64% oleic acid. The further treated by ultrasound-assisted extraction (UAE). optimal phenol conditions 10 min, 40% amplitude 4% (w/v) solid:solvent ratio, yielded 14.70 mg/g total phenols, 2.48 flavonoids 0.924...

This paper introduces the synchronous micromotor concept and presents new investigations on its application as an integrated driving mechanism in microfluidic systems. A spiral channel viscous micropump and a microstirrer are considered and tested as examples to verify the concept. The fabrication technology of such integrated systems is based on UV depth lithography, electroplating and soft li...

We report the application of the dispersive liquid-liquid microextraction coupled to hollow-fibre membrane-assisted liquid-phase microextraction and its application for extraction of atrazine and triclosan. Under optimum conditions, namely, 25 μL of a 1 : 4 chlorobenzene : ethyl acetate mixture dispersed in 1 mL of aqueous sample, 10% (m/v) NaCl, a magnetic stirrer speed at 600 rpm, and 10 minu...

The study shows the changes of total polyphenol compounds and antioxidant activities of Polygonum multiflorum Thunb root extract during the preservation time by freezing method. In addition, the treatment of initially raw materials by drying process also affects strongly total polyphenol compounds and antioxidant activity. Total phenolic compounds were determined by the Folin Ciocalteu method a...

The dissolution process of potassium chloride particles in the apparatus with two-blade mechanical stirrer was investigated and mass transfer coefficient determined. experimental results were generalized by criterion dependence. independence from solid diameter confirmed. A countercurrent salt two apparatuses a stirring considered. mathematical model for developed efficiency this