The data are illustrated in terms of bit characteristics: bit number, bit size, make, bit type, nozzle size, depth and deviation, weight on bit, rotation, pump pressure, mud flow rate, mud weight, mud viscosity, and bit condition.
Twelve cases were studied by changing the direction of impeller rotation, impeller pumping direction, and the presence of baffles.
For the closed loop, the flow rate was adjusted by two ways, i.e. regulating the pump rotation speed and changing the state of regulating valve.
The trailing edge of the original double-suction impeller blade is parallel with the pump rotation shaft, and the blades on both sides are arranged in a non-staggered layout.
The experimental spin procession dynamics are well fitted with a mono-exponential decay time and a single frequency as presented by red lines in Figure 1a by the following equation: Figure 1 Time-resolved Kerr rotation measurements and pump power dependence of spin splitting.
The rotation of the pump motor will keep it tight.
To exclude pump rotations, it is important to compare the current pump position with previous radiological images.
Myocardial perfusion is controlled in real time by flow meters continuously sampling the flow rate by means of high-precision digital flow meters (Atrato, Titan, Sherborne, United Kingdom) and providing re-adjustment of the speed of rotation of roller pumps through a feedback mechanism.
For (some) odd rotations of the pump to the vertical axis (Twiddler's syndrome), the pump is located on the head, which can be recognised by the logo in mirror image, and the electronics to the right-hand side (c) Open image in new window Fig. 8 Twiddler's syndrome with signs of withdrawal syndrome in a 51-year-old woman with dystonia in complex regional pain syndrome.
ACSS automatically performed injection/aspiration of cell and liquid by the rotation of peristaltic pumps and the switching of the flow paths.
This system measures and displays the operating parameters rotation speed, hydraulic head, pumping head, and supply discharge.
