This article presents the design and experimental testing of a unidirectional variable stiffness hydraulic actuator for load-carrying knee exoskeleton.The proposed actuator Fire Guard is designed for mimicking the high-efficiency passive behavior of biological knee and providing actively assistance in locomotion.The adjustable passive compliance of
This paper proposes a new formalism wheel for studying the extratropical circulation, based on the concept of potential momentum.Mathematically, the potential momentum is defined as the zonal momentum profile that produces the same potential vorticity distribution as the baroclinic term.Physically, easterly (westerly) potential momentum is associat
Abstract Background DNA methylation can provide a source of heritable information that is wheel sometimes entirely uncoupled from genetic variation.However, the extent of this uncoupling and the roles of DNA methylation in shaping diversity of both gene expression and phenotypes are hotly debated.Here, we investigate the genetic basis and biologica