The potential use of piezoelectric bimorph actuators in minimally invasive surgery suture-needle grasper/holder applications is explored computationally. Upon defining the design/functional requirements for such surgical tools, a finite element analysis of the underlying piezoelectric boundary value problem is combined with the genetic algorithm optimization routine to arrive at an optimal morp...

We recently demonstrated that the interlobular artery (ILA) constricts in response to elevating renal arterial pressure (RAP), suggesting that the ILA contributes to renal autoregulation. In the present study, we examined the segmental myogenic responsiveness of the ILA in kidneys from Wistar-Kyoto (WKY) rats and spontaneously hypertensive rats (SHR). The tapered nature of the ILA allowed us to...

Two non-specific sequential extraction methods utilising chemometric data processing (chemometric identification of substrates and element distribution, CISED) have been developed used to determine the physico-chemical partitioning potentially harmful elements (PHE) in certified reference material BCR CRM 701 (lake sediment). A miniaturized centrifugation method which sample was extracted on a ...

In order to study the die wear law of rotary fine blanking helical cylindrical gear, a three-dimensional rigid plastic finite element model gear is established on Deform-3D software platform. Based Archard model, this paper analyzes in process, obtains distribution each point working surface die, determines maximum area, and makes comparative analysis with spur gear. Through single factor varia...

Abstract The trend towards flexible, agile, and resource-efficient production systems requires a continuous development of processes as well tools in the area forming technology. To create load-adjusted weight-optimized tool structures, we present an overview new algorithm-driven design optimization workflow based on mixed-integer linear programming. Loads boundary conditions for mathematical a...