Flexibility and Control

Overflow Pumps These can be omitted if the thickeners are located at increasing elevations from first to last so that overflows are transferred by gravity or if the mixture of underflow and overflow is to be pumped. Overflow pumps are necessary, however, when maximum flexibility and control are sought. 

Electropolishing techniques utilise anodic potentials and currents to aid dissolution and passivation and thus to promote the polishing process in solutions akin to those used in chemical polishing. The solutions have the same basic constitution with three mechanistic requirements—oxidant (A), contaminater (B) and diffusion layer promoter (C) —but, by using anodic currents, less concentrated acid solutions can be used and an additional variable for process flexibility and control is available. 

Special rules apply to the world of hydrophilic polyurethanes. These alternate rules are based on the fact that hydrophilic polyurethanes can and should be processed in water. Rather than emulsifying a prepolymer with a polyol, as would be done with a hydrophobic polyurethane, hydrophilics are mixed with water. While the properties of the foam are governed loosely by the guidelines described above, one has more flexibility and control of the formulation and process by which the polyurethane is made. For example, the water can serve as a heat sink to closely control the temperature of the foam the water controls the rate of reaction. 

We have found that although the use of an automatic synthesizer can save time and can be relatively unproblematic for simple sequences, the synthesis of peptides manually allows for more flexibility and control over the assembly process. This is particularly important for the synthesis of difficult sequences as it permits quick and easy intervention at any point. 

By a systems approach, a process is designed as a complex system of interconnected components so as to satisfy agreed-upon measures of performance, such as high economic efficiency of raw materials and energy, down to zero waste and emissions, together with flexibility and controllability faced with variable production rate. 

The top temperature of a FFB regenerator should not be more than 730°C unless specified for special occasions. Superficial gas velocity is 1.2-1.8 m/s. Normal operation is quite flexible, and control is easy during plant startup, shutdown and upset. 

The pulse programmer is flexible and controlled by a simple scripting language that makes it easy to implement new pulsing schemes with phase cycling and multiple pulse channels. 

By altering the molecular architecture of the two components, that is, by providing different degrees of chain flexibility, and controlling the number of sites for subsequent urethane formation a wide range of mechanical properties can be obtained in the final polymer, ranging from very soft and deformable adhesive films to very rigid films (Richard and Charles, 1977). 

A number of benefits of using OEC in MSW incinerators have been cited.8 The economic incentives include increased waste-processing capacity, greater thermal efficiency, increased production in a waste-to-energy facility, reduced demand on the exhaust system, and a smaller air pollution control system. Increased capacity may be particularly important for many waste processors which are at their maximum capacity, since it is usually difficult to obtain permits to build new facilities. The environmental incentives include improved ash burnout, lower hydrocarbon emissions, lower CO, greater flexibility and control, and the ability to bum low-heating-value wastes such as dewatered sludge. 

Process flexibility and control despite reduction in degrees of freedom. 

Validation of applications and solutions will have to be planned and executed according to their functional rather than their physical interfaces. Although initially confusing, this should give the user greater flexibility and control over their Validation Plan and make the process more straightforward. 

Ravden and Johnson (1989) evaluate usabihty of human computer interfaces. They identify nine top-level attributes visual clarity, consistency, compatibility, informative feedback, explicitness, appropriate functionality, flexibility and control, error prevention and correction, and user guidance and support. They disaggregate each into a number of more measurable attributes. These attributes can be used as part of a standard multiple-attribute evaluation. 

Moving the correct quantity and type of merchandise to stores or direct to the consumer can create great economies, flexibility, and control. Inefficient transportation can be disastrous. Systems that do... 

Because of their olefinic base, Hivalloy polymers readily accqit minerals and reinforcing agents, providing added flexibility and control over properties, further expanding the PP property envelope into the specialty area. 

Increased process flexibility and control (normal, countercurrent, or reslurry washing operating under vacuum or overpressure)... 

---