  We derive for the Navier-Stokes equation an exact equation satisfied by the
dissipation rate correlation function. In the equal time limit, in the inertial
range, for the homogeneous, isotropic state of fully-developed turbulence, we
show that the correlation is characterized by two exponents, one of which
depends on the sixth-order static structure function exponent and the other
involves the behavior of the fourth-order dynamical structure function. This
provides a direct derivation of the intermittency exponent of the
dissipation-rate correlation.
