Effect of Fertilizers on Hydrogen-Ion Concentration in Soils.

The effect of hydrogen ion concentration on the anatomy of tobacco

Effect of hydrogen ion concentration on lactate dehydrogenase (LD) assays.

Union of Pure and Applied Chemistry (IUPAC) contained recommendations for names and symbols for quantities in chemistry and physics (1). The recommendation concerning the writing of the name (symbol) of a given chemical quantity was exemplified as follows: V(K2S04, 0.1 mol dm3 in H2O, 25#{176}C) = 48 cm3 mol-'. It was up to the reader to interpret this as the molar volume of potassium sulfate i...

Effect of Hydrogen-ion Concentration on Chlorella Photosynthesis.

Aquatic green plants can assimilate carbon dioxide in solutions of widely varying hydrogen-ion concentration. Our purpose in investigating the rate of photosynthesis as a function of this factor was to clarify the interpretation of experiments in carbonate mixtures, where the concentrations of carbonate and bicarbonate ions and of free carbon dioxide all vary with the hydrogen-ion concentration...

The Effect of Hydrogen Ion Concentration on Saponin Hemolysis

The purpose of the present study has been to determine the change in the resistance of corpuscles to saponin with changes in pII., the acids employed being the common inorganic acids. Ponder (1) has shown that the rate of saponin hemolysis is increased in the presence of certain acids and has applied the equation Cl = R (C, + g) to systems in which an acid is the accelerating agent. Details of ...

the washback effect of discretepoint vs. integrative tests on the retention of content in knowledge tests

در این پایان نامه تاثیر دو نوع تست جزیی نگر و کلی نگر بر به یادسپاری محتوا ارزیابی شده که نتایج نشان دهندهکارایی تستهای کلی نگر بیشتر از سایر آزمونها است