Tolerance continued

For processes that can operate with continuous cycling, the relatively inexpensive two position controller is adequate. For processes that cannot tolerate continuous cycling, a proportional controller is often employed. For processes that can tolerate neither continuous cycling nor offset error, a proportional plus reset controller can be used. For processes that need improved stability and can tolerate an offset error, a proportional plus rate controller is employed. 

Polyester fibres, for example, will degrade when exposed to strong bases and prolonged hydrolysing conditions, and polyamide fibres will not tolerate continuous exposure to strong acids. Polypropylene is widely used as a filter medium because it is relatively inert to both acids and bases, but is attacked in oxidising environments such as when chlorine or heavy metal salts are present. PTFE (polytetrafluoroethene) fibres are resistant to most chemicals, but their use is often prohibited by the high cost. 

When first starting, choose a high value for the tolerance. If the program seems to be working and giving a reasonable result, use the fitted parameters to start a new fit with a lower tolerance. Continue until parameters have converged to a constant value. 

PRIMARY (Component) Side Reference Plating layer and thickness Copper foil thickness, layer l reference and name Prepreg layer finished thickness and tolerance Copper foil thickness, layer 2 reference and name Copper-clad-core thickness and tolerance Copper foil thickness, layer 3 reference and name Prepreg layer finished thickness and tolerance continue with stackup... 

PEACER (Proliferation-resistant Environment-friendly Accident-tolerant Continuable-energy Economical Reactor) is a liquid metal cooled fast reactor for power production and waste transmutation. 

Hwang, I.S., et al., 2000. The concept of proliferation-resistant, enviromnent-fiiendly, accident-tolerant, continual and economical reactor (PEACER). Progress in Nuclear Energy 37... 

Hydrogen borrowing will likely become competitive with alkyl halide and reductive amination approaches as the method of choice for N-alkylation. Its broad functional group tolerance, continuously increasing scope, and facile scalability point toward a major impact in drug discovery in the coming years. 

As in other fields, the medical literature dealing with the adverse reactions of intravenous preparations provides a vast fund of new information yearly. Much of it is repetitive, to the extent that it reconfirms data which one may regard as sufficiently well established. It is surprising to see, however, that even in this field, where there are few truly new products, unexpected problems of tolerance continue to arise from year to year, whilst others recede into the background meanwhile new techniques to guarantee or improve tolerance continue to be developed. 

---