XXXVI.—Action of chlorine on pyrogallol

effect of oral presentation on development of l2 learners grammar

this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...

Chlorine activation on stratospheric aerosols

Introduction Conclusions References

Polarography of Tin ( IV ) - Pyrogallol Complexes .

The Reduction of Chlorine ! on Carbon In

Using a rotating vitreous carbon disk electrode, the kinetic parameters for chlorine reduction in an AlCl3 KCl-NaC1 (57.5-12.5-30 mol g%) melt were determined. It was found that the reduction of chlorine occurs according to the paths: C1 2 + e C1 + Clad s ads with the first step being most probably rate determining. The apparent exchange currents were (1 ± 0.15)10 -4A/cm 2 at 130 °C and (2.1 ± ...

STUDY OF THE EFFECT OF RESIDUAL CHLORINE ON SERUM IRON AND RELATED PARAMETERS

The major purpose of the present investigation was to study the effects of different concentrations of residual chlorine on serum iron related parameters in rats. Feeding male rats with water containing 80 ppm of residual chlorine daily for 5 days reduced serum levels of ceruloplasmin, copper, iron and hemoglobin by approximately 27%,23%,6% and 4%, respectively. Higher reductions in serum ...