Race tracking

Figure Al.6.23. Schematic representation of dephasing and reversal on a race track, leading to coherent rephasing and an echo of the starting configuration. From Phys. Today, (Nov. 1953), front cover.

Partly for these reasons, methanol has been the required fuel of the IndianapoHs 500 since 1965. Methanol is also used in many other professional and amateur races. However, transparency of the methanol flames has also been a disadvantage in some race track fires. The invisibiUty of the flame has confused pit crews, delayed fire detection, and caused even trained firefighters problems in locating and extinguishing fires. 

For a microring resonator with a waveguide width of 5 pm and coupling gap of 200 nm, a resonance extinction ratio of 12 dB for TE polarization and 9 dB for TM polarization has been achieved, as shown in Fig. 2.10. The ring resonator had a race track shape with circular sections of 500 pm radius and straight coupling section of 100 pm in length. The width of the two exposed strips is about 50 pm. 

Fig. 9.18 Examples of ring resonators with (a) conventional race track and (b) folded cavity geometries...

Nowak M., Schreen D., and Spickenbom K. (2004) Argon and CO2 on the race track in silicate melts a tool for the development of a CO2 speciation and diffusion model. Geochim. Cosmochim. Acta 68, 5127-5138. 

Figure 12.6 Generic curve part with dry spots caused by race tracking at radii and at edges...

Poor impregnation will result if the fiber volume fraction is so low that a region without fibers is formed on top of the reinforcement. This can happen, for example, if high performance fabrics with a high uncompacted fiber volume fraction are used at a too-low-fiber volume fraction. This situation is similar to the race tracking problem described earlier. Flow on top of the reinforcement can occur, even if the whole cavity thickness is filled with fibers, if... 

Thicknesses from 1 mm up to at least 50 mm are possible with RTM however, several difficulties can arise for thick parts, such as the problem of race tracking at edges, air enclosures due to uneven mold filling, and problems connected to cure. 

For loop jet mills, air or carrier gas is also injected into a grinding loop or race track through specially designed nozzles. Solid particle are injected into this... 

We conclude that the microscopic etch mechanism must be the same for single crystals and sputter deposited, polycrystalline ZnO Al. For the latter, the tendency for crater formation is masked by inhomogeneous chemical or physical properties like porosity, composition or, in case of dynamic deposition, multilayered ZnO Al films. This multilayer structure results from the fact that structural properties of ZnO Al deposited by a sputter process varies depending on the position of the film relative to the race track of the sputter target [131,132]. This dependence is important for the etch rate of in-line sputter deposited films [133]. 

Optimum operating conditions for LC, as determined by the C terms, are similar to those for GC d and dP should be small and Dp should be large. Also, as noted earlier, LC columns are usually straight, rather than coiled, to prevent the race track effect. Other minor factors in the CM term were discussed earlier. 

Imagine a series of race tracks one inside the other. Imagine these tracks are separated by high board fences. Put a race horse in the outermost track and instruct him to run around it until when he happens to feel like it, he has to jump the inside fence into the next track, run around it for a while, and then jump into the next fence, and so on until he reaches the innermost track of all. If, then you watch this procedure from the field outside the outermost fence, you will not see the horse at all as long as he is running in a single track. The fences hide him. But whenever he jumps from one track into the next, you will see him for an instant as he goes over. 

Eric arrived at the race track with three times as much money as he left with. He left with 60.00. How much did he lose at the track ... 

The race track design in its current form is only maintained on some models for cost, and package reasons. The target for future models has to be roimd. 

The high EO activity and solvent resistance allowed these materials to be processed through multiple lithographic and etching steps to fabricate a race-track-shaped microring resonator. By coupling this resonator with a side-polished optical fiber, a broadband electric-field sensor with a high sensitivity of 100 mV/m at 55 MHz has been demonstrated [116]. 

The development of new automotive applications and markets has brought interest in extending the physical size and shape limitations of the extrusion honeycomb process. Previously limited to round, oval and race track configurations, (FIGURE 6) shows irregular cross section capability used to allow the positioning of the converter in unusual vehicular locations. 

Set down your foam board and draw at least two wavy lines from top to bottom. Each wavy line should be different from the other. These will be the racing tracks for your bottle caps. 

Outline the racing tracks with rocks, making sure that the space between the rock outlines is at least 2 inches wide so that your bottle cap fits through. 

The entire assembly is enclosed in a highly insulated cold box to conserve energy. The columns must be made as compact as possible to minimize capital investment as well as reduce heat leak. Up to 150 distillation trays are used in a double column system and tray spacings are kept small at 10 to 20 cm. The trays are typically multipass sieve trays with small diameter perforations. Because the distillation is an extremely clean service, perforations are typically as small as 1 mm. Many tray geometries are used, including multipass cross-flow, split cross-flow (parallel) and circular flow (race track) trays. Each has certain attributes which are used to optimize the column design for different design conditions. 

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