Objective To synthesize the current evidence for subcutaneous hydration and medication infusions from systematic reviews and to assess their methodological quality.

The Born—Oppenheimer separation for a three-particle system has been re-examined in detail using a variational approach including a scale parameter. Discrepancies arising in earlier work have been resolved. Tables of adiabatic and nonadiabatic coupling terms are presented.

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A theory of explosions is developed which contains, as special cases, both the thermal theory and the isothermal chain theory of Semenoff. It contains qualitative features not present in either theory but under special circumstances reduces to each. Two illustrative applications are discussed in a general manner. Phase plane analysis, particularly suited to systems with only one important intermediate, is used.