Stingless bees (Meliponini) construct their own species-specific nest entrance. The size of this entrance is under conflicting selective pressures. Smaller entrances are easier to defend; however, a larger entrance accommodates heavier forager traffic. Using a comparative approach with 26 species of stingless bees, we show that species with greater foraging traffic have significantly larger ent...

MEMORANDOM It becomes necessary for every individual in his life to pause and look behind a man who had a positive impact on the lives of many patients, medical students and residents that may be the only thing a person can be proud of with high degree of confidence. We wish to write about him who had an immeasurable and indisputable contribution to the development of the field of plastic and r...

Sedimentation is one of the most important problems in harbors that results in considerable economic costs. Harbor planforms affects the flow pattern in the harbor basin and consequently, plays an important role in sediment transport and sedimentation. In the present study, a two dimensional depth-averaged hydrodynamic and sediment transport model has been developed to investigate the effect of...

The risk of forest and pasture fires is one the research topics interest around world. Applying precise strategies to prevent potential effects minimize occurrence such incidents requires modeling. This was conducted in city Sanandaj, which located west province Kurdistan Iran. In this study, fire assessed using weights evidence (WoE) statistical index (SI) models. Information about Sanandaj (2...