AIMS The Frank-Starling mechanism (rapid response (RR)) and the secondary slow response (SR) are known to contribute to increases contractile performance. The contractility of the heart muscle is influenced by pre-load and after-load. Because of the effect of pre-load vs. after-load on these mechanisms in not completely understood, we studied the effect in isolated muscle strips. METHODS AND ...

Delamination is one of the most common failure modes in composite structures. In the case of in-plane compressional loading, delamination of a layered flat structure can cause a local buckling in delaminated area which subsequently affects the overall stiffness of the initial structure. This leads to an early failure of the overall structure. Moreover, with an increase in load, the delaminated ...

Software Defined Networking (SDN) is a new emerging network architecture, which allows, among other things, an efficient convergence between circuit switching and packet switching. However, this convergence imposes a trade-off between control plane load and data plane efficiency: while the SDN controller needs to establish one or more paths (circuits) that can deliver the required bandwidth wit...

Anisotropy of sand is mainly due to the geometrical arrangement of particles that depends on the orientation of applied load respect to the bedding plane. It is geologically due to micro-fabric created by the arrangement of the particles configured during deposition. Most of the models develop using stress/strain invariants are not capable of identifying this kind of anisotropy. This is mainly ...

objectives to compare an out-of-plane interscalene catheter technique to the in-plane technique in a randomized clinical trial. patients and methods eighty-four patients undergoing open shoulder surgery were randomized to either the in-plane or out-of-plane ultrasound-guided continuous interscalene technique. the primary outcome was vas pain rating at 24 hours. secondary outcomes included pain ...

Abstract Sheet metal formed parts are often produced in multistage processes. The multi-directional deformations that occur this process pose a challenge for sufficiently accurate modeling of the material behavior. In paper, we present an experimental methodology and its potential serves as basis comprehensive validation models with respect to deformation. Therefore, results pre-strained DP600 ...