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1997 Su, N. and Wu, C. (2003): Effect of magnetic field treated water on mortar and concrete containing fly ash. — Cement and concrete composites 25

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peptone saline diluent (0.1% weight concentration) was added. The sample was homogenized in a mortar with pestle. From the suspension 0.1 mL was transferred with a sterile pipette on the previously prepared DRBC (Dichloran rose bengal chloramphenicol) agar

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), catalase (CAT), and peroxidase (POX) activities Frozen plant tissue (200 mg) was ground to a fine powder in a pre-cooled mortar, and 2 ml of extraction buffer [0.2 M phosphate buffer (pH 7.2), 0.1 mM ethylenediaminetetraacetic acid, 1 mM

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, comparable in size, were taken from each of five plants (15 leaves in total) from the middle of the rosette and each of them (about 500 mg) was ground to a fine powder under ice–cold temperature in a mortar. Immediately after grinding, 1 g of

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leaves (0.5 g) were finely homogenized in 50 mM phosphate buffer of pH 7.8 in chilled pestle and mortar in an ice bath, centrifuged at 12,000 ×  g for 15 min at 4 °C, and supernatant was stored at −20 °C for determination of CAT and POD activities. The

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