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THE determination of potassium is more troublesome than that of any other biologically important cation; at the same time there are many conditions involving variations in the electrolyte content ofthe body fluids in which accurate estimations of potassium are desirable. It therefore appeared worth while to try to devise an analytical method for potassium which should be simpler than those at p...

This current edition of the annual review of new developments in the field of "stress" follows the pattern of the previous ones. The first hundred pages are occupied by a summary of the concept of "stress" as developed by Selye and his colleagues. A great deal of this repeats material from previous editions, some of it word for word. A series of nine review articles is then inserted. These incl...

We report results from a 1-year field study (N = 80) on user interactions with regenerative braking in electric vehicles. Designed to recapture energy in vehicles with electric powertrains, regenerative braking has an important influence on both the task of driving and energy consumption. Results from user assessments and data from onboard data loggers indicate that most drivers quickly learned...