like other developing countries, iranian cities are growing and expanding physically at a high speed. for about five decades, the only policy of the urban development plans in the field of urban growth management has been definition of the urban growth boundary (u.g.b.) which is still used without any major modifications.despite the slight evidences indicating the ineffectiveness of the current...

abstract most allelopathic studies have demonstrated the importance of live and dead plant tissues as source of allelochemicals. seeds of several species also have inhibitory effects on germination of the same or other species. in order to determine the allelopathic effects of common lambsquarters (chenopodium album) seeds, an experiment was conducted under controlled conditions in birjand univ...

background the physiological link between ghrelin and growth hormone (gh) has not yet been fully clarified. furthermore, the existence of a negative feedback mechanism between growth hormone–insulin-like growth factor (gh–igf)-i axis and ghrelin and the influence of amino acids on ghrelin secretion in children remain matters of debate. objectives to understand the regulation of ghrelin secretio...

Lilium ledebourii (Baker) Boiss. (Liliaceae) is a critically endangered lily species native tonorthern Iran, where it is protected by law. In order to develop a cost effective method for largescalepropagation, the effects of three culture systems (solid, liquid and temporary immersion)and two types of cytokinins [6-Benzyladenine (BA) and Thidiazuron (TDZ)] were studied onthe in vitro plant rege...