In 1931, Frank coined the term premenstrual tension, in reference to the cyclical recurrence of tension, anxiety, and suicidal ideation in 15 women during their premenstrual phase.

There are beginning to be complications. [=It's beginning to be the case that there are complications.]

Interestingly, a large body of literature has shown that professionals in the mental heath services seem to be more vulnerable to the 'burn-in'-'burn-out' process.

It is shown that at electron scattering by a crystal atoms chain a phenomenon of rainbow scattering of superbarrier particles occurs. It is shown that at small angles psi the mean square scattering angle on crystal atom chains considerably exceeds the mean square scattering angle in amorphous medium and that maximum of these values ratio is attained under psi scale of the critical angle of channeling.