The present study has been conducted to evaluate the antialgal activities of
Tinospora cordifolia leaves extracts, these extracts included Terpens, Alkaloids, and
Phenols of that plant against 3 algal isolates: Anabaena circinalis, Scenedsmus
quadricauda and Mougeotia scalaris. The agar well diffusion method was used to
evaluate the inhibitory actions of these extracts with 3 concentrations: 5, 10, and 20
mg/ml. The experiments were conducted and analyzed as factorial experiments with
three replications using a completely Randomized Design, Means were compared
according to L.S.D. values at 5% significant level.
Results showed that A. circinalis was the most sensitive to alkaloid extract and
the diameterinhibitionzone was 40 mm in 20 mg/ml concentration, while this alga
was less sensitive to phenol extract anthe inhibition zone was 17 mm. also the
results showed that alkaloids extract was most active against all algae usedin this
study followed by terpens extracts, while the phenols extracts had lower antialgal
activity.
In this article four samples of HgBa2Ca2Cu2.4Ag0.6O8+δ were prepared and irradiated with different doses of gamma radiation 6, 8 and 10 Mrad. The effects of gamma irradiation on structure of HgBa2Ca2Cu2.4Ag0.6O8+δ samples were characterized using X-ray diffraction. It was concluded that there effect on structure by gamma irradiation. Scherrer, crystallization, and Williamson equations were applied based on the X-ray diffraction diagram and for all gamma doses, to calculate crystal size, strain, and degree of crystallinity. I
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