Depth increase rate

Two parameters are useful in the design of a machined microchannel. The first parameter is z0, the channel depth at time zero. This value is obtained by extrapolating the channel profile curves, such as the one in Fig. 6.16, to time t = 0. The second parameter is md, the average channel depth increase rate over time. The depth z(t) of the channel over time is then given by ... 

Figure 6.17 Dependence of the microchannel depth increase rate md and the initial depth z0 on the tool travel speed. Reprinted from [23] with the permission of the Journal of Micromechanics and Microengineering.

For processes that have a positive pressure gradient in the metering channel, the observed rate can be reduced considerably as Indicated above for deep channels. This rate loss Is caused by the W term In the pressure flow equation for example, see Eqs. 1.22 and 1.29. Thus as the channel depth increases, the rotational rate... 

The effect of fuel bed depth increases as the fuel feed rate is increased. 

The effect of increased fuel bed depth increases as fuel feed rate increases. Comments on the work... 

With type B solids, Reay and Baker suggest that bed depth does have a significant effect increasing bed depth increases the humidity of fhe ouflet gas. Therefore, in fhese cases, even fhe dense-phase gas is nof af equilibrium with the moisture in the bed particles. In contrast to type A solids, gas velocity has no effect on the drying rate but there is a significant effect of parficle size drying rate is proportional to the diameter squared. These observations are explained by the high internal resistance to the movement of water and the slow diffusion of water to the particle surface. 

Figure 3.4 Time dependence of the concentration fluctuation during demixing with successive increases in the quench depth (quench rate = 0.6K/s). (Reproduced from [36])...

An increased rate and depth of breathing will enhance the uptake of gases. When considering the needs of a client and administering essential oils to... 

Q5 Alkalosis can be caused by both metabolic and respiratory problems. Apart from hyperventilation, respiratory alkalosis can be produced by hypoxia, for example, when a person moves to high altitude with a reduced arterial P02, stimulation of respiration occurs via the peripheral chemoreceptors in the carotid and aortic bodies, which respond to the low arterial P02. Increased rate and depth of respiration causes an increased quantity of C02 to be lost from the body, and so pH rises. 

Severe hyperglycaemia may lead to diabetic ketoacidosis polyuria, thirst, leg cramps, weakness, nausea, vomiting, abdominal pain, KussmauTs respiration (increased depth and rate of breathing), drowsiness, confusion and coma. 

Both Peterson (41) and Berger (42) found that dissolution started at approximately 0.5 km water depth and the rate of dissolution increased slowly with increasing water depth until a depth of approximately 3.8 km was reached. Below this depth the rate of dissolution rapidly increased with increasing water depth. The change in the saturation state of seawater, with respect to calcite, in the deep water of this region is close to linear with depth (43). Consequently, the results of these experiments indicated that the rate of dissolution was not simply related to saturation state. Edmond (44) proposed that the rapid increase in dissolution rate could be attributed to a change in water velocity. Morse and Berner (45) pointed out that this could be true only if the rate of dissolution was transport controlled. Their calculations indicated that the rate of dissolution measured by Peterson (41) was over 20 times too slow for diffusion controlled dissolution, this being the slowest transport process. 

A schematic illustration of the closing of bubbles in ice as the density and depth increase. The actual close-off depth depends on snow accumulation rates and other factors. Redrawn from Broecker (2002). 

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