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We studied the possibility of expanding to the north the range of growing paisa, chumiza, mohar, millet, and African millet. High adaptive properties of these crops and their varieties during cultivation in the conditions of the Novgorod region are revealed. When sowing in the third decade of May, the studied crops can be used for green fodder and hay from middle of July to September, in the cold years - during August, for harvesting silage and haylage from middle of August almost until frost. On average for 2015-2018 the maximum plant's height was obtained from the paisley varieties Gulliveria (135 cm) and Stapize (129 cm). A stable yield of green mass in the studied years was established in the varieties paisa (35.4-50.7 t / ha), chumiza (27.8-33.7 t / ha). Mohar Stamoga also obtained a guaranteed high rate of this trait (36.9 t / ha). In years with a lack of heat, the yield of pares decreased by 9.1-24.6 t / ha, of chumiza by 5.8-29.5 t / ha In other crops, productivity decreased by 2 or more times. According to the dry matter content of crude protein, paisa Gotica (20.69%), mohar Athlete (14.57%), chumiza Strela (13.77%) are distinguished. Comply with GOST for the content of raw protein paisa Stapize, mohar Stepnoy Mayak, millet sowing Regent (11.73-12.79%). In terms of energy potentiality (in OE and KE) they correspond to the requirements of the Gotica style, the chumiza Strela. More than 4 tons of dry matter per 1 ha were obtained from all varieties of paisa, mohar Stamoga and Stepnoy Mayak, chumiza Olya, millet African Sogur and millet sowing Zolotaya Orda. At paisa Stapize, the collection of protein per 1 ha is 953.2 kg, and paisa Gotica - 876.8 kg. Keywords: introduction, adaptation, green mass, paisa, mohar, chumiza, African millet, sowing millet.

The creation of hydrophobic anti-icing and self&ndash, cleaning coatings is a relevant task for many industrial sectors. The potential field of application includes production of liquid and gas separators and filters, the field of textiles and clothing, construction and new materials, optical and microelectronic devices, the field of automobile construction and maritime shipping as well as energy and agriculture. The article suggests a new approach to the creation of superhydrophobic anti-icing coatings, by drawing peeled multi-walled carbon nanotubes (MWCNTs) to the sample surface. This method allows you to combine the necessary factors: Low surface energy, micro-nano-roughness and hierarchical multi-scale. The authors investigated the dependence of the wetting angle of such a surface on the model of MWCNT, fractional composition and the polarity of the dissolvent. The suggested approach can be used to create superhydrophobic coatings with the additional function of removing static charge and heating the surface, which can be used in the field of energetics for protection against freezing of wind turbine blades and aircraft surfaces.

The duration of the sprouting-sprouting period for mid-early varieties (Knyazhna and A-3615 lines) was 62-64 days, for medium-ripening (Zersta 38A, Korichnevozernoye 11S, Viktoriya and No. 7812) - 66-68 days. In the late-ripe hybrid Yarik, it lasted 98 days. The most significant initial plant growth rates were found in the Yarik hybrid and its paternal form, variety Galiya (43 cm). The maximum height of plants had hybrids Yarik (306 cm), Alga (269 cm) and the new variety Guzel (272 cm). The heterosis of plant height at seed ripening at Yarik was 42.8%. According to the combination of the length of the panicle (20.5-30.0 cm) and its protrusion from the bell of the upper sheet (12.0-22.0 cm), the best indicators were found in Yarik, Alga, Knyazhna, Guzel and Galiya. On average for 2016-2018 the maximum yield of green and dry mass was obtained from the Yarik hybrid - 103.3 t ha-1 and 27.9 t ha-1. For other options, it was 69.7 and 19.7 t ha-1, respectively, for Alga, 70.6 and 19.1 t ha-1 for Guzel and for the Galiya standard 49.9 and 14.2 t ha-1. The true heterosis of green mass yield in the Yarik hybrid had values of 71.4 t ha-1 (69.1%). The highest sugar content in the juice of the stems was recorded for variants No. 7812 (18.4%), No. 8611 (18.3%). Higher than the standard Galiya (14.2%) sugar content was also obtained from the Larets line (15.2%), varieties Victoria (16.6%) and Guzel (16.8%). In the Alga and Yarik hybrids, this trait had values of 13.7% and 13.8%. Keywords: line, variety, hybrid, heterosis, sugar sorghum, yield, plant height, sugar content

The problems of creation of an automated system for obtaining, processing and storing experimental information on the physical and mechanical properties of structural materials, building materials and various soil media used to provide information support for automated computing systems for analysis of strength and design of structures are discussed. The developed database is focused on studying the effects of the behavior of structural materials under highly parametric influences of force, temperature and other physical fields, as well as on equipping and experimental substantiation of mathematical models describing these effects. In the proposed variant, the database is implemented as a client-server application executed on the Microsoft.Net Framework using a powerful database management system MS SQL Server. The content of the created bank is made up of sections of primary information, material properties and material models. In order to automate the processing of data at all stages of information conversion, a special “Desktop” subsystem is included in the bank, which allows aggregating data obtained from several different experiments, correcting the selected data, processing and converting it. Processing and transformation of data in the subsystem “Desktop” can be carried out either in manual mode or on the basis of special algorithms using appropriate mathematical methods.

Background. Thrombotic complications are the main cause of disability and mortality in Polycythemia Vera (PV) patients. Thrombosis in PV is a result of both inherited (genetic) and acquired predisposition under the external factors influence. Effective personalized prophylactic antithrombotic therapy is a key factor to save quantity and quality of life in PV patients. Objective. The objective of study was to assess the prevalence of hereditary thrombophilia genetic markers in PV patients in overall and groups with or without thrombotic complications. Materials and methods. 104 PV patients (60 females, 44 males, median age 58 years, range 31-82) were researched. Blood probes were examined by PCR for the presence of nucleotide polymorphisms in the following genes: FV (Leiden mutation), FII (prothrombin), methylenetetrahydrofolate reductase (MTHFR), fibrinogen (FI), plasminogen activator inhibitor (PAI-1), and platelet fibrinogen receptor type IIIA (GPIIIA). We studed the overall hereditary thrombophilia markers rate and the statistical significance between PV patients groups with (Thr+) or without thrombosis (Thr+). We used the next statistical methods: descriptive statistics, the significances of differences by gender and genes frequencies in the groups were evaluates with Fisher exact test, differences in age at the time of diagnosis were assessed with Mann-Whitney U test. Results. Thrombotic complications occurred in 20 (19.2%) of patients (16 arterial and 5 venous thrombotic episodes, 1 patient had both arterial and venous thrombotic episodes). Myocardial infarction was found in 7 (6.7%), cerebrovascular accident in 9 (8.7%) patients. The general PV population thrombophilia markers frequencies were: heterozygous (G/A) Leiden mutation in 4 (3,8%) patients; heterozygous mutation in prothrombin gene (G20210-A) in 4 (3,8%) patients; homozygous (T/T) mutation in MTHFR in 8 (7,7%) patients, heterozygous (C/T) mutation in 43 (41,3%) patients; homozygous (A/A) mutation in FI gene in 4 (3,8%) patients, heterozygous (G/A) mutation in FI gene in 43 (41,3%) patients; combination of mutations in FI and MTHFR was registered in 23 (22,1%) patients; homozygous (4G/4G) mutation in PAI-1 gene was revealed in 35 (33,7%) patients, heterozygous (4G/5G) mutation in 49 (47,1%) patients; mutation frequencies in GPIIIA gene were as follows: homozygous (A2/A2) in 5 (4,8%) patients, heterozygous (A1/A2) in 26 (25%) patients. The markers of hereditary thrombophilia was not identified only in one patient (1%).Characteristics and difference significances in the frequency of detection of thrombophilia genes between groups of patients with thrombosis (Thr+) and without their presence in history (Thr-) are shown in table 1. Table 1. Characteristics of PV patients with (Thr+) or without (Thr-) thrombotic complications. Thr+ (n=20) Thr- (n=84) p Age, median (range) 63 (36-73) 58 (32-82) 0.75 Gender, male/female 9/11 35/49 0.81 Factor V Leiden mutation, GA/GG 2/18 2/82 0.17 Prothrombin gene (G20210A) mutation, GA/GG 1/19 3/81 0.58 MTHFR mutation, (TT+CT)/CC 14/6 37/47 0.05 FI mutation, (AA+GA)/GG 6/14 41/43 0.14 PAI-1 mutation, (4G/4G+4G/5G)/(5G/5G) 17/3 67/17 0.76 GPIIIA mutation, (A2A2+A1A2)/A1A1 1/19 30/54 0.01 Conclusions. Various hereditary thrombophilia gene mutations were present in almost all PV patients. PV patients with and without thrombotic complications were significantly (p≤0.05) differed in frequencies of mutations in methylenetetrahydrofolate reductase gene (MTHR) and platelet fibrinogen receptor type IIIA (GPIIIA). We also observed statistical trends (p≤0.30) in differences of mutations frequencies in fibrinogen (FI) gene and Factor V Leiden mutation, for the confirmation of which the further research is required. Disclosures No relevant conflicts of interest to declare.