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In order to obtain doubled haploids (DH) homozygous lines of common wheat in National Center of Grain named after P.P. Lukyanenko (NCG) the methods of selective elimination of chromosomes of maize in genome of intergenal hybrid embryos and anther culture are used. During the 2016-2019 years more than 1,500 diploid lines of 26 varieties of winter common wheat were produced.

Improved coke and agglomerate quality make it possible to intensify NLMK blast furnace operation by increasing gas pressure in the bell, blast flow rate, oxygen concentration within it, and injected fuel flow rate. BF specific productivity increases by 15–30% with a simultaneous reduction in fuel consumption. An increase in smelting intensity with respect to oxygen and reducing gas generated in the hearth increases indirect reduction of wustite and its efficiency.

The influence of the intensity of blast-furnace smelting on the effectiveness of the indirect reduction of iron from wustite is considered on the basis of the Rist model, for specially prepared batch and coke of satisfactory quality. In the case of practically stable and effective reduction, broad variation in the smelting intensity in terms of oxygen is associated with acceleration of the indirect reduction, on account of increase in the concentration of reducing agents in the gas, increase in their consumption, and increase in the gas–batch contact surface. These results do not confirm the finding from the 1950s and 1960s that the dependence of the productivity and coke consumption on the smelting intensity is extremal.

The initial experience with pulverized-coal injection in two blast furnaces at OAO NLMK is analyzed. Factors affecting the pulverized-coal combustion in the tuyere are identified. The operational efficiency of the blast furnace with different pulverized-coal flow rates is discussed. Stable pulverized-coal consumption no lower than 135 kg/t has been attained at a blast furnace with a conical charging system; the corresponding furnace productivity is 70–75 t/m2 per day.

Smelting of hot metal with reduced silicon content is considered. The use of higher-basicity sinter with increased pellet content in the batch is of interest. Other options considered include the use of a gasoxygen mixer and optimization of product discharge at OAO NLMK.

Results are presented from an evaluation of the effect of the quality of the iron-ore-bearing raw materials and coke on the performance of blast furnaces at the Novolipetsk Metallurgical Combine. It is shown that the technical-economic indices of the smelting operation are improved by increasing the pellet content of the charge, the basicity of the sinter, and the sinter’s content of the ‐5 mm fraction. An analysis of the performance of the blast furnaces on coke with a hot-strength index CSR = 40‐60% confirmed the qualitative and quantitative effect of this index on furnace productivity and coke consumption. The analysis also showed that the magnitude of this effect depends on smelting rate and the basicity of the furnace slag.

Psychophysiologic service could play an important role in optimal training and anti-wreek practice with various tasks that simulate some aspects of operations' activities in contingency.

The surgical technique, clinical and anatomic explanation of the osteoplastic part of the compression arthrodesis of a hip joint has been demonstrated. The spongiform vascularized transplant from the upper flaring portion of the illeum was used for the operation. The basis for the transplant flap is a front part of musculus gluteus medius with arteries, veins and a nerve.

An experience with the treatment of 92 patients with non-united fractures and false joints of the femoral neck is described. Among them there were 52 elderly and senile patients who were subjected to various kinds of endoprosthezing of the hip joint. The authors have established certain advantages of individual one-pole endoprostheses after A. V. Vorontsov as compared with a standard method of endoprostheses after Moore--CITO.