Tuning of optic and electron properties of laser heterostructures by ultrasonic strain

Frequency modulation of diode lasers is the basis of the most of interferometric measurement systems. A new approach to the problem of the frequency tuning of diode laser radiation is presented in our paper. It consists in action of the alternate strain, stipulated by ultrasonic (both bulk and surface) waves, on an active region of a laser diode. The interaction models are offered and the theoretical analysis of the obtained experimental data has been carried out

VALLINGS IN DIET OF CHILDREN WITH HYPOTROPHY OR UNSTABLE STOOL

Problem of nutritive status correction in children with body mass deficiency is still topical. Drug treatment is not efficient completely is no individual correction of nutrition is provided. Development of a diet should be performed taking into account peculiarities of infants with body mass deficiency. Correction of nutrition in 20 children with hypotrophy and 20 children with unstable stool was performed with Vallings — liquid homogeneous milk-cereal mixtures with high nutritive value and sparing consistence. Normalization of intestinal function and common increase of body mass was detected in one month after the beginning of treatment.Key words: children, hypotrophy, diarrhea syndrome, Vallings.(Voprosy sovremennoi pediatrii — Current Pediatrics. 2010;9(6):117-122