there are many efforts for identification of natural compounds from dietary or medicinal plants. young roots and aerial parts of a. persicus have been used as food additive or salad vegetable in some parts of iran. in this study, different fractions of the root extract of a. persicus were subjected for isolation and purification of secondary metabolites. the methanol extract of the roots was fr...

new advances in geomatics and communications technologies are enabling the development of automated auscultation system for structure monitoring. in particular, differential gps (dgps) technique allows real-time monitoring of structures with millimetre accuracy after an appropriate mathematical treatment. the results of real-time dgps monitoring of a pilot dam over 15 months are presented and c...

viroids are smallest, single-stranded, circular, highly structured plant pathogenic rnas that do not code for any protein. viroids belong to two families, the avsunviroidae and the pospiviroidae. members of the pospiviroidae family adopt a rod-like secondary structure. in this study the most stable secondary structures of citrus viroid variants that reported from fars province were drawn. the m...

composites provide design flexibility because many of them can be moulded into complex shapes.  carbon fibre-reinforced epoxy composites exhibit excellent fatigue tolerance with high specific strength and stiffness. these properties led to their numerous advanced applications ranging from military and civil aircraft structures to consumer products. the modelling of beams undergoing arbitrarily ...

In order to cooperate effectively with its peers, an agent must manipulate representations of the social structures in which it plays a part. The purpose of this paper is to investigate the mathematical and computational aspects of this social reasoning process. We begin by defining an abstract representation of cooperation structures, wherein agents cooperate to achieve goals on each other’s b...

The composites provide design flexibility because many of them can be moulded into complex shapes. The carbon fibre-reinforced epoxy composites exhibit excellent fatigue tolerance and high specific strength and stiffness which have led to numerous advanced applications ranging from the military and civil aircraft structures to the consumer products. However, the modelling of the beams undergoin...

Natural hazards such as earthquakes have threatened the life of human beings during the history.As a consequence, the vibration mitigation of structures has caught great importance. Activecontrol of structures is one of the rapidly emerging areas in the concept of structural control. Thispaper presents a control method to deal with this subject when the dynamics of the structure ishysteretic an...