Detached broad bean (Vicia faba L.) leaflets were water stressed; within 15 minutes, guard-cell abscisic acid (ABA) concentration increased ninefold. This result eliminates the apparent discrepancy raised by reports of no correlation between initial water-stress effects on stomata and leaf ABA concentration. Six hours after stress relief, guard-cell ABA concentration was near the prestress valu...

Recent studies of excessive multidecade deflections of prestressed segmentally erected box girders revealed that more accurate predictions of the prestress loss due to steel relaxation are needed for the design of large-span creep-sensitive structures. In particular, the loss needs to be calculated as part of creep structural analysis, during which the strain of concrete to which the prestressi...

This paper presents a simple and efficient method to determine the self-equilibrated configurations of prismatic tensegrity structures with dihedral symmetry. It is demonstrated that stability of prismatic tensegrity structures is not only determined by the connectivity manner of the members, but also sensitive to the height/radius ratio and the stiffnss/prestress ratio. A catalogue of symmetri...

Prestress in amorphous solids bears the memory of their formation and plays a profound role mechanical properties. Here we develop set mathematical tools to investigate response prestressed systems, using stress rather than strain as fundamental variable. This theory allows microscopic prestress vary for same bond or contact configuration is particularly convenient nonconservative such granular...