Bit rotating time

Selection of Weight on Bit, Rotary Speed and Drilling Time (Bit Rotating Time)... 

Drilling and Well Completions Optimal bit rotating time is... 

Since quite a bit of difference exists between raw materials, the recipe, and the equipment, the processing procedure and conditions vary a lot. Also, the processing procedures of commercial products are usually not available to the public. Thus, much work needs to be done to find the best procedure and condition for each individual system. In general, a good procedure is a combination of optimal processing time, temperature, and rotating speed of the screw (in the case of extruder use) or the roll nip (in the case of calender use). 

For a polymer chain, we will be considering steps of equal length, defined by the chemical bonds, rather than observations at given time intervals (Figure 8-27). But it is easy to see that the problem is essentially the same. Except that now we have some complications. First, a Brownian particle can pass through a volume element of space that it has previously traversed. A polymer chain is sterically excluded from an element of volume occupied by other bits of itself. Also, the particle could randomly take steps in any direction in 3-dimensional space. The steps taken by a chain are constrained by the nature of the covalent bond and the steric limitations placed on bond rotations. 

Neutron stars have also provided the first direct evidence of planets outside the solar system. The pulsar PSR 1257+12 rotates 161 times per second-but its pulses are not evenly spaced, as are the ones from the Crab. Observations made with the giant Arecibo radio telescope showed that some pulses arrive slightly too soon, others just a bit too late. This means something is tugging the pulsar back and forth slightly. Careful measurements showed that a pair of planets is responsible. 

Dipole rotation refers to the alignment, by effect of the electric field, of molecules in the sample that have permanent or induced dipole moments. As the electric field of microwave energy increases, it aligns polarized molecules. As the field decreases, thermally induced disorder is restored. In fact, applied microwave fields cause molecules, on average, to temporarily spend very slightly more time pointing in one direction than in others. Associated with that very small fraction of preferred orientation there is another very small fraction of molecular order imposed and hence a tiny bit of energy. When the... 

Turbo-drilling was pioneered in California in the 1940s. But, it was perfected by the Russians and it is almost standard equipment in Russia. The turbo-drill can be 12 times faster than a rotary. The bit is rotated by the hydraulic power of the mud stream pumped down through a non-rotary pipe. A turbine below the drill pipe converts the hydraulic power of the mud stream into rotary power. 

All two-dimensional detectors, film, MWPC, television, CCD or IP, end up producing a two-dimensional image of, say, 512x512 pixels, each of a certain depth (6, 8, 12 or 16 bits). There are then many images either resulting from many orientations of the sample as it is rotated in the monochromatic method or, in the time resolved Laue method, many time slices (but with fewer orientations needed). Hence, a data set is... 

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