Large Scale Winter Time Disturbances in Meteor Winds over Central and Eastern Europe

Daily zonal wind data of the four pre-MAP-winters 1978/79 to 1981/82 obtained over Central Europe and Eastern Europe by the radar meteor method were studied. Available temperature and satellite radiance data of the middle and upper stratosphere were used for comparison, as well as wind data from Canada. The existence or nonexistence of coupling between the observed large scale zonal wind disturbances in the upper mesopause region (90 to 100 km) and corresponding events in the stratosphere are discussed

Wind regime peculiarities in the lower thermosphere in the winter of 1983/84

Temporal variations of prevailing winds at 90 to 100 km obtained from measurements carried out in winter 1983 to 1984 at three sites in the USSR and two sites in East Germany are reported. These variations are compared with those of the thermal stratospheric regime. Measurements were carried out using the drifts D2 method (meteor wind radar) and the D1 method (ionospheric drifts). Temporal variations of zonal and meridional prevailing wind components for all the sites are given. Also presented are zonal wind data obtained using the partial reflection wind radar. Wind velocity values were obtained by averaging data recorded at between 105 and 91 km altitude. Wind velocity data averaged in such a way can be related to about the same height interval to which the data obtained by the meteor radar and ionospheric methods at other sites, i.e., the mean height of the meteor zone (about 95 km). The results presented show that there are significant fluctuations about the seasonal course of both zonal and meridional prevailing winds

Development of a Flow-Measuring Hydropneumatic Bench for Testing Pipeline Valves

Pipe fittings are an important element of any pipeline network, ensuring stable and safe operation by regulating the flow of the working medium. To control the performance of pipeline valves, it is necessary to conduct various tests, the main ones of which are hydraulic and pneumatic. It is important to expand testing capabilities and reduce time costs. The purpose of this work is to combine hydraulic and pneumatic tests into one test complex, which will reduce the time of the test complex due to the absence of the need for reinstallation and reconfiguration. The subject of the study is the determination of the design, technical, and operational characteristics of such a stand, as well as the simulation of operating conditions to confirm its operability. During the development, methods of solid and surface modeling, the finite element method, and analytical calculation methods were used. The results of the stand design are presented, and the features of the process of its development are described, including the analysis of the stress-strain state and the analysis of reliability and durability indicators. The obtained values of the distribution of equivalent stresses, deformations, and displacements of the structure elements do not exceed the maximum allowable values and do not lead to destruction. The analysis shows that the developed stand has improved capabilities compared to those previously used. Doi: 10.28991/CEJ-2023-09-01-013 Full Text: PD

Post-operative reflux esophagitis as a predictor of choice of restrictive operation in patients with metabolic syndrome.

The purpose of this study was to conduct a comparative analysis of the retrospective results of laparoscopic sleeve gastrectomy (LSG), laparoscopic gastroplication (LGP) and laparoscopic fundogastroplication (LFGP) (simultaneous performance of fundoplication by Nissen and gastroplication) obtained at the follow-up period of 1 year, to evaluate and compare the effectiveness of prevention of short-term postoperative complications, which are manifested in the form of GERD, by performing preventive antireflux procedure in combination with restrictive bariatric surgery. Evaluation of the effectiveness and long-term effects of the presented restrictive operations was carried out on the basis of retrospective data obtained during the supervision of 46 patients with obesity and metabolic syndrome (men / women - 16/30, average age – 41.19±6.07, body weight – 128.26±7.37 kg, abdominal circumference – 133.4±4.71 cm, body mass index (BMI) – 42.66±2.41 kg/m2, I-III ASA). In the preoperative and postoperative periods, during consultations, in all patients measurements of anthropometric indicators were performed, laboratory data and results of instrumental research were considered. All metabolic procedures presented were performed at the basis of the Department of Surgery and Vascular Surgery of NMAPE named after P.L. Shupik in the period from 2016 to 2019. 13 patients underwent LSG, 20 – LGP and 13 - LFGP. In order to control the results, repeated consultations were carried out at 1, 3, 6 and 12 months of the postoperative period. The average duration of the operation was: LSG – 88.5±6.49 min, LGP - 120±5.42 min, LFGP – 135.38±7.48 min. The average period of hospitalization was: LSG – 3.2±0.63 days, LGP – 3.53±0.62 days, and LFGP – 3.5±0.67 days. After a year, the body mass index (BMI) was: LSG – 31.17±0.31 kg/m2, LGP – 32.48±0.23 kg/m2, LFGP – 32.43±0.21 kg/m2. According to the results of a repeated questio­ning of patients one year after the operation, 3 (23.07%) of the LSG group and 5 (25.0%) of the LGP group had symptoms of GERD, which failed to be eliminated with the help of conservative therapy, life quality of patients became significantly worse. In the group of patients who underwent LFGP, this complication was absent. After the control gastroscopy, 1 year after, de novo signs of reflux esophagitis were detected (according to the Los Angeles clas­sification): in the LSG group – 3 (23.07%) patients (2 - grade A and 1 - grade B), in the LGP group – 5 (25.0%) patients (3 – grade A and 2 – grade B). Among patients who underwent LFGP, there were no signs of reflux esophagitis. Considering the possible development of GERD and reflux esophagitis in one year after the restrictive surgery, the use of preventive measures consisting in the simultaneous performance of antireflux and metabolic operations is relevant, this is demonstrated by the example of LFGP. We recommend to give preference to simultaneous operations for the achievement of not only high rates of weight loss, but also for improvement of the quality of patients` life in the future

Resonance method of electric-dipole-moment measurements in storage rings

A resonance method of measuring the electric dipole moment (EDM) of nuclei in storage rings is described, based on two new ideas: (1) Oscillating particles' velocities in resonance with spin precession, and (2) alternately producing two sub-beams with different betatron tunes--one sub-beam to amplify and thus make it easier to correct ring imperfections that produce false signals imitating EDM signals, and the other to make the EDM measurement.Comment: 10 pages, 1 figure, accepted for publication in Phys. Rev. Lett., Spring 200

The choice of antimicrobial therapy among physicians in the treatment of gestational pyelonephritis

From 1 to 10% of the physiological pregnancy complicated by acute pyelonephritis. The purpose work- analyze the choice of antimicrobial therapy among physicians in the treatment of gestational pyelonephritis. Materials and methods-analysis of the anonymous survey in the framework of the second stage of the All-Russian pharmacoepidemiological study, "Epidemiology of the use of drugs in pregnant women", which was conducted from February to April 2015. On the basis of this was carried out to compare the results with the results of the survey of doctors of the Belgorod regio

Study of the process e+e-\to \mu+\mu- in the energy region \sqrt{s}=980, 1040 -- 1380 MeV

The cross section of the process e+e-\to\mu+\mu- was measured in the SND experiment at the VEPP-2M e+e- collider in the energy region \sqrt{s}=980, 1040 -- 1380 MeV. The event numbers of the process e+e-\to\mu+\mu- were normalized to the integrated luminosity measured using e+e-\to e+e- and e+e-\to\gamma\gamma processes. The ratio of the measured cross section to the theoretically predicted value is 1.006\pm 0.007 \pm 0.016 and 1.005 \pm 0.007 \pm 0.018 in the first and second case respectively. Using results of the measurements, the electromagnetic running coupling constant \alpha in the energy region \sqrt{s}=1040 -- 1380 MeV was obtained = 134.1\pm 0.5 \pm 1.2 and this is in agreement with theoretical expectation.Comment: 29 pages, 23 figure