Oscillatory Motion of an Organic Droplet Reflecting a Reaction Scheme.

An organic droplet containing thymol acetate (TA) floating on a sodium dodecyl sulfate aqueous phase was examined to develop a novel self-propelled object based on reaction kinetics. Two types of oscillatory motion, without back-and-forth motion (Osc I) and with back-and-forth motion (Osc II), were observed by varying the pH of the aqueous phase. The oscillation frequency reached its maximum at pH 9.

Improvement of gastric atrophy after Helicobacter pylori eradication therapy.

Background: It remains controversial whether gastric atrophy is reversible after Helicobacter pylori eradication therapy.

Aim: To clarify whether gastric atrophy improves after H. pylori eradication therapy using a histologic approach.