[Methodic of using of transcutaneous dynamical electroneurostimulation during treatment of patients with different variants of borderline state].

There was effectuated a valuation of effectiveness of using electroneurostimulation in combination with traditional medicinal treatment in psychiatry by 88 patients with different borderline states: asthenoneurotic, asthenodeppessive and vexatiousdepressive syndromes. Control group was formed by 90 patients with similar states, by getting only traditional treatment. Patient's state was evaluated before treatment, on the 5th and 10th day of treatment by using a scale of general clinical state - severity, a subjective visual-analog scale, a psycho-metric scale of subjective valuation of well-being, activity and mind. On the base of the data there was made a conclusion that DENS-therapy could be used in complex treatment of patients of psychiatric profile with borderline states as well in stationary as in polyclinic conditions.

Investigation of acoustic waves of higher order propagating in plates of lithium niobate.

This paper presents theoretical investigation of higher order acoustic plate waves propagating in single crystals of lithium niobate. The dependencies of wave velocity and electromechanical coupling coefficient of antisymmetric, symmetric, and shear horizontal modes on the parameter hf (h=plate thickness, f=operating frequency) are calculated as a function of propagation direction on X-, Y-, and Z-cut lithium niobate plates. It is found that several modes can provide values of K2 that are much greater than can be obtained with surface acoustic waves (SAWs). For example, K2 as high as 0.26 and 0.38 can be obtained from SH1 and A2 modes, respectively. This compares with a maximum value of K2=0.055 for SAWs. It is further shown that there are several crystal cut and propagation directions that can allow efficient excitation and detection of a single mode with minimal interference due to other modes.