Basic principles of postgrowth annealing of CdTe:Cl ingot to obtain semi-insulating crystals

The process of annealing of a CdTe:Cl ingot during its cooling after growth was studied. The annealing was performed in two stages: a high-temperature stage, with an approximate equality of chlorine and cadmium vacancy concentrations established at the thermodynamic equilibrium between the crystal and vapors of volatile components, and a low-temperature stage, with charged defects interacting to form neutral associations. The chlorine concentrations necessary to obtain semi-insulating crystals were determined for various ingot cooling rates in the high temperature stage. The dependence of the chlorine concentration [Cl+Te] in the ingot on the temperature of annealing in the high-temperature stage was found. The carrier lifetimes and drift mobilities were obtained in relation to the temperature and cadmium vapor pressure in the postgrowth annealing of the ingot.Comment: 6 pages, 6 figure

Systemic enzyme therapy and clinical and hemorheological parameters in coronary heart disease patients with effort angina

This study is devoted to systemic enzyme therapy (wobenzym and phlogenzym) influence on hemostasis, hemorheology, and clinical course of disease inpatients (n=54) with Functional Class II-III effort angina, receiving complex therapy. Systemic enzyme therapy improved blood rheology due to decreased red and white blood cell aggregation, increased elasticity of red blood cell membrane; optimized fibrinolysis and hemocoagulation systems' status; improved angina clinical course and quality of life. Including wobenzym and phlogenzym into complex therapy ofFC II-III effort angina patients is clinically rational, effective, and safe