helicobacter pylori (h.pylori) infection is probably the most important factor that has been associated with the development of gastric cancers in human populations. however, there are no reliable data on the prevalence of this infection in the middle east. in this article, based on a comprehensive literature review, we aimed to evaluate the situation in this region. the literature has been sea...

the issue of convergence or divergence of productivity has important policy for regional poverty reduction and increasing standards of living. if productivity converges to a common level without intervention, there is little need for explicit policies in lagging regions to promote catch up. on the other hand, productivity has divergence trend, then explicit policies would be needed to prevent f...

Trehalose, an alpha,alpha-diglucoside, induced a rapid blackening and death of shoot tips of Cuscuta reflexa (dodder) cultured in vitro. The onset of toxic symptom was delayed if any of the several sugars which support the in vitro growth of Cuscuta was supplied with trehalose. The rate of trehalose uptake or its accumulation in the tissue was not affected by sugar cofeeding. The levels of tota...