malian animals, i.e. that of a cat. It was also influenced by the spring-mass model representation [2]. Compliant prismatic legs show an intrinsic robustness for their angle of attack [2], they have a stability region. If the leg design is changed into a two segmented leg with a specific linear torsional spring, the leg stiffness kleg becomes nonlinear (Fig. 2(b) blue line), similar to that of ...

The bounding gait for the Platform for Ambulating Wheels (PAW), a new and unique hybrid wheeled-leg system is presented here. Two hypotheses are tested and discussed: first, that the robot’s forward speed can be increased by increasing the leg liftoff angles and, second, that addition of distally-mounted actuated wheels can be used in running gaits such as the bound. Both hypotheses were tested...

An articulated leg for the use in a running robot is presented. It is driven by series elastic actuation with a highly compliant spring at the knee joint to exploit periodic energy storage and passively support a running motion. The spring is connected with the knee motor by a cable pulley system, which allows the advantageous placement of the motor in the hip joint and enables us to use a comp...

This paper presents a literature review of the dynamics offshore floating wind turbine platforms. When moving further offshore, there is an increase in capacity power. Generating power from renewable resources enhanced through extraction energy deep-water resource. Mounting on platform that not stable brings another difficulty to modeling. There need introduce platforms are more effective captu...

Oxygen tension in healing tissues is heterogeneous. Increased oxygen mostly stimulates repair mechanisms and enhances tissue healing. Hyperbaric oxygen therapy increases blood and tissue oxygen content and may help maintain cellular integrity and function. Hydroxyurea (HU) is a cytotoxic agent, which leads to inactivation of ribonucleotide reductase, inhibition of cellular DNA synthesis, and ce...

Tensile forces generated by stress fibers drive signal transduction events at focal adhesions. Here, we report that stress fibers per se act as a platform for tension-induced activation of biochemical signals. The MAP kinase, ERK is activated on stress fibers in a myosin II-dependent manner. In myosin II-inhibited cells, uniaxial stretching of cell adhesion substrates restores ERK activation on...

When mammals run, the overall musculoskeletal system behaves as a single linear "leg spring". We used force platform and kinematic measurements to determine whether leg spring stiffness (k(leg)) is adjusted to accommodate changes in surface stiffness (ksurf) when humans hoop in place, a good experimental model for examining adjustments to k(leg) in bouncing gaits. We found that k(leg) was great...

The yaw bearing is a connection component which located on the tower top of wind turbine. may be subjected to environmental dynamic loads and wave forces contribute fatigue life bearing. used in onshore turbines well established, but less so for offshore turbines. In this work, assessments bearings are compared 5 MW with six different support foundations: onshore, monopile, ITI barge, Tension L...

Extension of analysis of the functional basis of geotropic excitation and response in young rats has made it desirable to obtain, for additional genetically stabilized lines, further tests of the quantitative reproducibility of orientation data as secured from successive generations in these lines over a period of several years; and of the measures of variation of performance as these are relat...