Cells set up contractile actin arrays to drive various shape changes and to exert forces to their environment. To understand their assembly process, we present here a reconstituted contractile system, comprising F-actin and myosin II filaments, where we can control the local activation of myosin by light. By stimulating different symmetries, we show that the force balancing at the boundaries de...

1. Steers with rumen and simple duodenal cannulas were allowed to graze pasture or were given diets of dried grass or flaked maize with or without hay. For an experiment a solution or suspension of magnesium chloride, polyethylene glycol (molecular weight 4000) and either 144Ce (as cerous chloride) or chromic oxide was added to the rumen with a morning feed. Conditions in the rumen were sometim...

........................................................................................................................ 44 Introduction ................................................................................................................... 45 Materials and Methods .................................................................................................. 46 Results and Discu...

Introduction: Single-shot echo-planar imaging (SS-EPI) has been widely used for diffusion imaging, primarily due to its rapid data acquisition speed, robustness against motion, and low specific absorption rate (SAR). SS-EPI, however, not only suffers from severe off-resonance effects such as magnetic susceptibility variations but also exhibits severe distortion in non-axial planes due to concom...

Steer by wire system can be free to design steering force transmission characteristics and angular displacement transfer characteristics, which can realize the coordination of portability, the driver steering road feel and handling stability. The dynamics models of steer by wire and vehicle system are established. Control strategy of front wheel angle based on fuzzy adaptive PID control is put ...