Discharged area development

Fig. 9. (a) Schematic of charged area development (CAD), using toner charged oppositely to that of the photoreceptor and resulting in a positive document (b) discharged area development (DAD), where the toner and photoreceptor polarity are the same, resulting in a negative document. 

Develop a system to identify the infant, mother, father, or a designated other before the baby leaves the birthing area. Develop procedures to address discharge of the mother prior to the infant leaving the hospital. Ensure adherence to documentation procedures to follow when a mother will not receive the baby on discharge (Tables 13.17 and 13.18). 

Since the average meridional velocity is essentially a function of the ratio of flow rate to the discharge area at the tip of the impeller, it is not affected hy sUp. However, a change in the absolute velocity is accompanied by changes in the relative velocity and of the angles with respect to the peripheral tangential speed. Various equations have heen developed over the years to evaluate the sUp factor. The most famous is Stodola s formula ... 

Tn all but the last 10 or 15 years the majority of decanter applications have been limited by their ability to clarify the liquor. Scale up of these centrifuges Would be based on their clariKcation ability. Thus, a lot of the earlier development has been concentrated on enhancing clarification capacity. Bowl speeds have been increased, bowls lengthened and solids discharge areas increased to ensure solids choking does not inhibit clarification volume. Apart from these obvious methods there are some mechanical modifications which can help,... 

Poor performance can result from fan inlet eccentric or spinning dow, and discharge ductwork that does not permit development of hiU fan pressure. Sometimes inlet restrictions starve a fan and limit performance. To obtain rated performance, the air must enter the fan uniformly over the inlet area without rotation or unusual turbulence. This allows all portions of the fan wheel to do equal work. If more air is distributed to one side of the wheel, such as with an elbow on the inlet, the work performed by the lightiy loaded portions of the wheel is reduced and capacity is decreased by 5—10%. The use of an inlet box duct on a fan can reduce capacity by as much as 25% unless there are turning vanes in the duct. Use of the vanes reduces the capacity loss to around 5%. 

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