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For the first time, the distribution of rare earth elements (REE) has been studied in detail for a number of coal facilities (30 deposits, 650 samples of coal and 210 samples of carbonaceous rocks). The ubiquitous presence of elevated concentrations of REE in coals has been noted. The REE mineral cluster in coals includes the association: ash content of coals – SiO2 – K2O – Al2o3 – TiO2 – Sc – Y – Dy – Ho – Er – Tm – Yb – Lu, and the association La – Ce – Pr – Nd – Sm – Eu – Gd – Tb. The presence of these elements of the mineral part of the coals is preferably in the composition of phosphate minerals – monazite and apatite (according to electron microscopy with microanalysis, the correlation of REE with P2o5). The content of individual REE in humic acids isolated from coals and fractions of coals of different densities has been studied. The specific role of organic matter(s) in the concentration of REE, their presence in the humus component of S and in low-ash coals is shown. Selective accumulation (fractionation) of heavy REE by organic matter has been experimentally established for the first time. Two genetic types of REE mineralization have been identified in coals: mainly terrigenous (hydrogenic) and tufogenic. The increased concentrations of REE in coals are due to the influence of the petrofund. The deposits were ranked according to the degree of prospects for REE based on an assessment of the resource potential of associated REE in the coals of the studied brown coal deposits. REE raw materials (lanthanides in coal ash) differ significantly from traditional types of rare earths ores by an incomparably large relative amount of heavy REE (on average 3–4 times), sometimes reaching 46% of the total REE content. Thus, coal ash is a unique non–traditional source of heavy lanthanides – more rare, valuable and expensive. The coals of the studied deposits should be considered as associated raw materials for rare earths.

Introduction. Medical compression stockings are one of the main methods in a conservative strategy for the treatment of chronic vein diseases as well as for adjuvant treatment after superficial venous interventions. however, compliance to this treatment is low.Objective. To evaluate patient satisfaction with medical compression knitwear therapy in a short-term follow-up.Materials and мethods. The study included 150 patients of both sexes aged 42 ± 8.3 years. Endovenous laser obliteration combined with mini-phlebectomy and/or sclerotherapy for varicose veins was performed. All patients after the surgery wore compression stockings of compression class 2 with a recommended wearing period of 14 days. At the control visit at the end of the follow-up period all patients were asked to complete a satisfaction survey with a specially prepared questionnaire including 7 questions.Results and discussion. No significant adverse events and complications related to either the invasive intervention or the compression therapy were observed during the follow-up period. There were no abnormalities such as compression sensations or changes in blood flow under the knitwear. The compression was totally adequate, with no areas of over- and/or under-compression. All respondents felt that the knitwear was well anchored to the leg and no slipping or twisting due to the wide elastic band with droplet silicone. In addition to all of the above, the patients noted that the knitwear offered to them in the study had good tactile properties: it was soft and pleasant to the skin. According to the survey, the average score for all questions was 9.5 (QR 8-10).Conclusion. Elastic compression is an effective and safe means of preventing adverse events, complications and pain in patients after superficial varicose veins surgery. Additional consumer properties of medical compression knitwear can significantly influence patients’ compliance and therefore the effectiveness of treatment.

This article is devoted to the analysis of restructuring in the Russian production sector basing on the worldwide experience of innovative industrial policy with the focus on the role of the government in this process. While the author in the article identifies de- and re-industrialization trends, cluster systems organization as well as development of national innovation systems (NIS) as crucial processes in the global industry great attention is paid to the role of the state in these processes. International practice in developed countries shows that the state plays key role in industrialization process acting as a brainchild in setting target values for R&D industrial expansion implementing institutional, infrastructure, preferential as well as tax relief forms of support. Major advanced economies devote considerable attention to creation of supportive environment for industrial development, including implementation of national innovation systems (NIS) as well as elaboration of the institutional infrastructure industry development programs. Global market industrial trends analysis shows that production sector together with its innovative development will remain a major priority and a driving force in global economic growth. Taking into account present situation of the Russian economy which can be described as critical, time factor is considered to be of great importance, making it necessary to adopt accelerated development model in the Russian economy reforms. A key question to consider is what actions should be adopted by the government to ensure acceleration in economic development of the country.

The OBJECTIVE was to study the short-term results of surgical treatment of patients with brachial artery injury in peacetime upper limb injury.METHODS AND MATERIALS. This study presents the short-term results of surgical treatment of 61 patients with brachial artery injury in peacetime upper limb injury. The study included 33 patients who were admitted to the City Hospital of St. Martyr Elizabeth in St. Petersburg from 2011 to 2022 and 28 patients who were admitted to Hospitals in the Leningrad Region from 2017 to 2022.RESULTS. All 61 patients underwent emergency surgery: autovenous prosthetics of the brachial artery was performed in 46 patients, an end-to-end anastomosis was formed in 10 patients, and a lateral suture was applied to 5 patients. In the early postoperative period, there were 3 thrombosis of the reconstruction zone, 1 amputation of a limb, 1 fatal outcome from severe blood loss.CONCLUSION. Upper limb injury with brachial artery injury without specialized assistance can lead to disability and even death of a patient, therefore requires emergency intervention by a vascular surgeon to stop bleeding, restore the main blood flow and stop limb ischemia.