31. This pressure gradient drives the gas into the product. 32. This pressure gradient , resisting the contraction of the left ventricle, causes an increase in afterload. 33. It opens and closes in response to pressure gradients between the left and right atria. 34. There is a strong pressure gradient across the isobars toward the center of the cyclone. 35. Polymeric trileaflet valves ensure unidirectional blood flow with a low pressure gradient and good longevity. 36. Neglecting pressure gradients , the Navier Stokes equations simplify to 37. Reverse osmosis ( RO ) takes advantage of hydrostatic pressure gradients across a special membrane. 38. The pressure gradient , when combined with the Coriolis effect and friction, also influences wind direction. 39. The curvature of a streamline is related to the pressure gradient acting perpendicular to the streamline. 40. Both these effects decrease the contribution of the oncotic pressure gradient to the net driving force.
