background: it has been stated that the bone allografts from different tissue banks may lead to various amount of bone induction, so the aim of this study was to evaluate bone regeneration of three demineralized allografts both histologically and histomorphometrically in rabbits calvaria bone defects. materials and methods: in this double-blind randomized experimental animal study, 32 critical ...

background: the relationship between the high activity of aldose reductase (ar) and diabetic cataract formation has been previously investigated. the purpose of the present study was to determine the preventing effect of melatonin on streptozotocin (stz)-induced diabetic cataract in rats. methods: 34 adult healthy male sprague-dawely rats were divided into four groups. diabetic control and diab...

This article discusses cooperative stabilization control of rigid formations via an event-based approach. We first design a centralized formation system, in which central event controller determines the next triggering time and broadcasts signal to all agents for input update. then build on this approach propose distributed strategy, each agent can use its local trigger information update at ow...