We study a bargaining model in which a buyer makes frequent offers to a privately informed seller. In addition, the buyer gradually learns about the seller’s type from a publicly observable news process. We show that the buyer’s ability to leverage this information to extract more surplus from the seller is remarkably limited. In fact, the buyer’s equilibrium payoff is identical to what he woul...

background use of medicinal plants with high antioxidant properties could be effective to increase fertility and improvement of disorders such as hormonal imbalance, impotency, oligospermia and immotile sperm. celery (apium graveolens) is rich in antioxidant agents. the leaf and stems of celery contain phenols, furanocoumarin and luteolin. apigenin is one of the main flavonoids of celery leaf. ...

conclusions the extract contains substances that are effective on the delivery rate, sex ratio, and the number of newborns in the female rats. it may affect through the ionic changes in the rats, by modifying the activity of follicle-stimulating and testosterone hormones, and/or changing the rate of fertilizing ability of sperms containing y chromosome. this phenomenon may also be due to loweri...