Adapting to working practices

Increasing requirements for the quality of analysis methods are accompanied by a need for new, efficient procedures for the examination of robustness. The working conditions of H P LC should be expressly adapted to the practice, and the observed changes in selectivity should consistently be used for a sensible evaluation in order to obtain both economical and robust HPLC methods. 

The different forms of energy may be classified according to tlieir practical value as regards adaptability, or availability, for the performance of useful work. 

It will, therefore, be seen that the best and safest practice is to use in each situation in the coal mine an explosive which is best adapted for the operation in hand. The use of unnecessarily weak explosives, even though apparently safer in some tests, is often a disadvantage and can be dangerous. These considerations have led to the development of a series of types of explosives suited for particular purposes in coal mines and subjected to tests relevant to their individual uses. Thus, in Britain there are now five classes of permitted explosives. In Germany there are three classes. In the U.S.A. geological conditions are different and the hazards are less than in Europe, and it has been possible to work throughout with the strongest types of permissible explosives. 

It is not clear why nature should have selected rationing devices for self-reward as the goods which people will value, rather than a turnkey kind of reward which must always come from outside the person.6 It can only be said that inventors have often found the most direct solution to a problem to be too rigid the device that works in practice is often engineered to allow slippage among the parts. Perhaps the constitution of rewards as rationing devices rather than as absotute determinants of reinforcement permits the most flexible adaptation to the environment. 

This book is intended for two audiences. The first includes those who are involved in sensor research who have polymer-related problems and need to find some potentially elegant remedies. The second audience includes polymer scientists who are looking for a challenging discipline in which to practice their arts. Many of the solutions already worked out for polymers used in electronics or biomedical applications may be adapted to polymers for sensors. As these scientists become more directly involved with sensor-related materials development, better solutions to problems may be realized. 

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