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The results of studies of Corydalis marschalliana (Pallas ex. Willd.) Pers. in the Easten part of the Donbass (Lugask and Donetsk regions) are provided in the research. The fact that in the Easten part of Donbass region C. marschalliana grows in 60 locations (33 locations are in the Lugansk region and 27 ones are in the Donetsk region) was established. 19 of them were discovered by the author of the research. Environmental conditions in the studied region were described. Corydalis marschalliana biomorphological characteristics, area and growth conditions are given. Environmental history was studied, map charts and species distribution lists on the territory of the Easten part of Donbass region were made. Cenopopulation studies of Corydalis marschalliana were carried out. The article gives the data about studied species protection on the specially protected natural territories of the Easten Part of Donbass region, the ways of possible rational usage of this species are indicated. It was concluded that C. marschalliana does not need personal protection on the territory of the Easten part of Donbass region.

The results of the studies of Corydalis marschalliana (Pallas ex. Willd.) Pers. in the Eastern part of the Donbass (Lugask and Donetsk regions) are provided in the research. The fact that in the Eastern part of Donbass region C. marschalliana grows in 60 locations (33 locations are in the Lugansk region and 27 ones are in the Donetsk region) was established. 19 of them were discovered by the author of the research. Environmental conditions in the studied region were described. Corydalis marschalliana biomorphological characteristics, area and growth conditions are given. Environmental history was studied; map charts and species distribution lists on the territory of the Eastern part of Donbass region were made. Cenopopulation studies of Corydalis marschalliana were carried out. The article gives the data about studied species protection on the specially protected natural territories of the Eastern part of Donbass region, the ways of possible rational usage of this species are indicated. It was concluded that C. marschalliana does not need personal protection on the territory of the Eastern part of Donbass region.

The article is characterized of Scilla siberica in the Donbass region’s flora (systematic position, geographic, eological-cenotic and biomorphological features, population structure). It was the first time, when we discovered Scilla siberica with purple flowers in Donbass (var. phoeniceum Gryt. (prov.)). We studied the chorology of the species and spread mapping of Scilla siberica was made. We found out that Scilla siberica grows in 146 locations (67 of these locations were found by author). We also came to the conclusion that Scilla siberica occurs everywhere and do not need personal protection.

The known data on the morphology of paratellurite single crystals grown from melt by the Czochralski method are analyzed. The structure of faces is studied by scanning electron microscopy and interference profilometry, and their inclination angles to the pulling axis are measured. Based on calculations, the found faces are indexed as {113}.

Aim. A comparative analysis of mertoplasty results for treatment of uterine scar leak by different approaches. Materials and methods. A retrospective analysis of hospital records of 51 patients was made, which were divided into three groups depending on the surgical approach used: group 1 – laparotomy access, group 2 – laparoscopic access, group 3 – transvaginal access. All patients had hysteroscopic and ultrasound signs of uterine scar leak after cesarean section (thickness of the myometrium in the scar area less than 4 mm, discontinuity of the scar). One month after the surgery, all the patients were examined by an obstetrician-gynecologist, all had a control ultrasound to assess the condition of the uterine scar. To assess the reliability of differences between groups, differences were considered significant at p

Aim. To reduce incidence of mesh-related complications by comparative analysis of the results of vaginal extraperitoneal mesh-vaginopexy with use of trocar and anchoring systems.Materials and methods. A retrospective analysis of outpatient and hospital charts of 160 patients was performed, who underwent operative treatment of genital prolapse by vaginal extraperitoneal vaginopexy with Prolift, Johnson & Johnson, USA, Pelvix (Lintex, RF), Elevate (AMS, USA) and the Calistar system (Promedon, Argentina). The duration of postoperative follow-up was 3 years. In the 1st group, the patients were operated on using trocar techniques (Prolift, Pelvix). The second group consisted of patients operated on with the use of anchor technologies using the Elevate and Calistar methods. The degree of prolapse of the genitals was determined by the POP-Q system. The index of the influence of genital prolapse on the quality of life (IVQV) was assessed using a validated PD-QL questionnaire. To verify the accuracy of the hypothesis, Chi-square was used. Differences were considered valid for p

This paper presents the results of numerical simulation of hydrogen combustion in a supersonic flow of an oxidizing medium in a model combustion chamber using various models of chemical kinetics. The best scheme, which most accurately describes the combustion processes, is revealed. Comparison of the calculated distribution of molar fractions with experimental data is carried out, and relative deviations for the piloted mode of operation of the chamber are obtained.

One of the methods for generation a finely dispersed spray for pilot nozzles, used in modern aircraft engines widely, is co-rotating or counter-rotating directed relative to the direction of movement of the fuel film, air flow swirl. Therefore, it is interesting to investigate the shape of the liquid film and its disintegration at low fuel consumption. In the present work, the influence of the speed and direction of the air flow on the main characteristics determining the dispersion and shape of the spray pattern downstream the pressure swirl nozzle was investigated. The mathematical model of the film motion in a curvilinear coordinate system associated with the film surface to obtain the basic characteristics of the spray was used. The main attention was paid to the spraying characteristics in the initial phase of the formation of the spray at the calculations carried out according to this model. Calculations showed that the swirling air flow helps to open the entire cone spray angle, however, the initial angle of the spray is smaller than in the absence of air flow near the nozzle with opposite swirling,. The work also showed that swirling air flow reduces the thickness of the fuel film in the immediate vicinity of the nozzle almost the same, regardless of the direction of its rotation. The effect of the swirling air flow on the average sizes of atomized fuel droplets based on the calculation of the thickness of the fuel film, its speed and the cone angle of the spray data were obtained. The results are compared with the available experimental date.

The testing of various turbulence models was conducted when calculating separated swirling flows. For burning simulation, a simple phenomenological model is presented. The model takes into account the gas swirling effect on the velocity of flame propagation. The developed technique is applied to the calculation of the burn-out of a lean mixture in model combustion chambers with three-tier swirlers. It is shown that the reversed organization of combustion with outside ignition is more efficient than the scheme with inside ignition. In the calculations, the mutual swirling of the flows behind the swirlers was varied and its effect on the burn-out rate of the mixture was considered.

The article presents the remote results (time-period more than 1 year) of application of percutaneous laser destruction in treatment of nodular goiter in 164 patients. The reliable decreasing of dimensions and size of nodular formations of thyroid gland in early time-periods with continuation of regression during a year is established. In the following, slight regression was marked during 3,5-5 years. The morphological analysis established that in remote time-periods after percutaneous laser destruction of nodular proliferating colloid goiter the destroyed follicular epithelium and colloid are replaced by connective tissue structures with large amount of collagen guaranteeing long-term predictive result.

An ibuprofen-selective electrode on the basis of a composition of an anion exchanger, 2,3,4-tris(dodecyloxy)benzyltrimethylammonium with a neutral carrier, N-trifluoroacetylbenzoic acid heptyl ester, is proposed. It exhibits good selectivity, a wide pH-range, and a low limit of detection. A procedure for the determination of ibuprofen in tablets is developed.

Seven systems of more than 60 compounds with possible inhibiting properties are investigated. Several methods are used: electrochemical, gravimetric, XPS, and SEM analyses. The inhibition efficiency Z is related to the chemical structure of inhibitors (sequences of compounds with regard to Z are found), their electronic structure, the surface area of the inhibiting molecule, and the structure and composition of the metal/solution interface (impedance, adsorption equilibrium parameters, etc.). The most efficient of the investigated inhibitors have Z = 94–99%. Conclusions are drawn which allow identification of compounds with prognosticated inhibiting action.

Parameters of insulin resistance and lipid transport were studied in nonobese subjects and in obese subjects with different body fat distribution, and the results were compared with current concepts of the physiological and biochemical mechanisms of abdominal (android) and gluteofemoral (gynoid) types of obesity, concomitant dyslipoproteinemias, and the roles of insulin and insulin resistance in these conditions. Disturbances of the hormonal regulation of lipid metabolism, which manifest themselves as hyperinsulinemia, insulin resistance, and a decreased serum level of the insulin antagonist somatotropin, were associated only with abdominal obesity and were considered to be one of the main causes of atherogenic dyslipoproteinemia in this type of obesity.

Purpose: To define of efficacy of a laser ablation of subcentimetric thyroid nodules. Material and methods: 130 patients (age – 43.9+15.1 years) with nodular goiter in the sizes less than 1 cm (infracentimetric nodules was treated. Laser ablation (power 3.5 W) was performed with ultrasound guidance (Medison Pico, linear 7.5 – 15 MHz probes) of conducting a 0.4 mm optical fiber. Control US studies are performed on 1, 3, 6 and more months after destruction. US studied change of the sizes, volume, echoic, echostructure, vascularity of nodules. Results: Positive effects of laser destruction in treatment of infrabcentimetric thyroid nodules was achieved in most cases. US criteria for destruction efficacy are as follows: nodule size reduction more than 50%, nodule fragmentation, change in echostructure, indistinct margins, hypo- or avascularity in CDI. In 107 cases (90%) infracentimetric nodules have decreased in volume, including at 19 cases (14.6%) disappearance of focuses. The relative quantity hypoechoic (> 0.05), isoechoic (p < 0.01), anecogenic (p < 0.01) nodules has decreased, hyperechoic nodules (p < 0.01) was enlarged. As a result of destruction the blood stream has not been defined in 55.9% of nodules and has been considerably relaxed in 41.4%. Appearance of hyperechoic focuses (12.6%) and points of calcination (8.1%) was noted. In most cases (83.8%) nodules had indistinct borders. Conclusion: Results of laser destruction at patients with thyroid nodules less than 10 mm in diameter authentically are better, than at focuses of the larger sizes (χ2 = 6.218, p < 0.05). That allows to recommend laser destruction at treatment of small thyroid nodules.

Phase transformations in the C15-type system HfV2Dχ (0.3 ⩽χ⩽ 4.08) were studied by X-ray diffraction, 2D nuclear magnetic resonance (NMR) and differential thermoanalysis. The experimental data on the transition temperatures and structures of the low-temperature phases were combined to obtain a tentative phase diagram of this system. The results are compared with those for the closely related ZrV2Hχ(Dχ) system.

Three experiments were performed in different years to study a pleiotropic effect of two marker genes A and B on quantitative traits in Arabidopsis thaliana L. (Heynh.) Experiments differed in their conditions for plant growth (light intensity and soil fertility). In experiment 1, substitution of B- by bb did not affect the duration of the sowing-flowering period, whereas substitution of A- by aa caused a 2-day delay in flowering. Experiment 2 showed that both genes affected this trait. The delay in flowering was one, two, or three days when B- was substituted by bb, A- by aa, or A-B- by aabb, respectively. Therefore, these genes were additive. Data of experiments 3 were opposite to those of experiment 1: substitution of A- by aa did not affect the trait studied, whereas substitution of B- by bb caused a 2-day elongation of the sowing-flowering period. Thus, variations in growth conditions transformed the effects of the marker genes duration of the sowing-flowering period and changed a set of genes that determined this trait. Note that effects of A and B genes on other qualitative and quantitative traits (for example, plant height) were constant in all experiments. Therefore, transformation of a gene set, which influenced the sowing-flowering period, was not related to the repression or derepression of A and B genes.

Oxygen added in amounts of 0.01-0.1% was found to cause the explosion of an acetylene–chlorine mixture at temperatures as low as −78°C. Explosion occurrence and nature depend on the mode of mixing the reactants, the effect of oxygen being associated with concentration limits. The dependence of explosion-inducing oxygen amounts on temperature, pressure, concentrations of reactants, reactor surface type and area, additions of inert gases, and reaction products were investigated. The effect of light on the C2H2 + Cl2 + O2 was studied. The composition of gaseous products resulting from acetylene–chlorine mixture explosion in the presence of minute amounts of oxygen, from a slow reaction inhibited and noninhibited by oxygen, and also from explosion at 400°C in the absence of oxygen, was determined. The results obtained point to the fact that any acetylene–chlorine mixture flash caused by small amounts of oxygen is a branched chain reaction involving activated particles, chain branching presumably being associated with the decomposition of radical CHCl=CHOO* → CH + HCl + CO2.