The possibilities of quantitative analysis of the relationship between the severity of the COVID-19 pandemic and the institutional characteristics of the countries of the world

The interrelation of the severity of the epidemiological situation in a particular country and its institutional characteristics (including the level of health care, quality of management, the level of public trust, cultural characteristics, etc.) is considered. As a result, using the developed index of the severity of the epidemiological situation, the institutional characteristics that most affect the effectiveness of the measures applied were determined. It was figured out that of the 16 characteristics considered, only two (the level of employment and trust in the government) have a medium statistical correlation with the severity of the pandemic. Three more characteristics (prevalence of secular-rational values, degree of urbanization, GDP PPP per capita) have a correlation close to the medium. The remaining characteristics (including health care costs, government efficiency, etc.) have either a weak correlation wiыth severity, or actually do not have it. The results obtained indicate insufficient use and reassessment of existing institutional capacities at the initial stage of the pandemic, as well as insufficient reliability of morbidity and mortality statistics in a number of countries. In conclusion, based on the analysis of statistical indicators, recommendations are given to improve the effectiveness of the use of institutional capacity to counter epidemiological threats, improve this potential, increase the effectiveness of protective and restrictive measures that reduce the severity of the epidemiological situation

Investigation of the ultrasonic treatment influence on physical and chemical indicators of vegetable oil distillates

The article presents research in the field of influence of ultrasonic vibrations on distillates of vegetable oils, in particular rapeseed and sunflower. In the course of the research, the main physico-chemical indices of distillates of vegetable oils were determined after their sonication. A laboratory facility for carrying out experimental work is described. According to the test results, the intensity of ultrasonic radiation is determined to produce distillates with new qualitative indices. The results of these studies indicate that the use of ultrasonic technologies in the processing of rapeseed and sunflower oil distillates improves the quality of the latter, and also extends the scope of their subsequent processing

Physics of Auroral Phenomena

Abstract. On February 16, 2003 EISCAT-Heating experiment was carried out on observation of heating induced disturbances in the magnetosphere. A pump wave of 4.04 MHz in X-mode was used for the ionosphere modification from 19:55 to 23:59:59 UT in square modulation regime with 5 minutes ON / 5 minutes OFF cycle. During the interval of good conjugation of CLUSTER with the heating facility spacecraft 4 (Tango) recorded clear variations of electric field at modulation frequency lasting around 30 minutes. Spectral peak of the variations at 1.67 mHz is more pronounced in the y-component. Slow temporal variations of the conductivity in the heated volume due to electron density increasing in the E-region related with the heating duty cycle provide the same variations of disturbed electric field. Polarization of the disturbances is almost linear; it corresponds to constant ratio of Hall to Pedersen conductivity variations. The analysis of the signal waveform shows that at ~ 23.30 UT the phase of the variations is changed together with a sign of DC electric field. The transverse size of the disturbed structure in the magnetosphere is near 0.1 R E . The observed behavior of the disturbances may be interpreted in terms of Alfven mode propagation of the disturbed ionospheric electric field into the magnetosphere. The electric field disturbances being uniform in the region of modified conductivity have a discontinuity at its border of the region and decay as two-dimensional dipole outside it. Field-aligned currents are related with conductivity gradients and distinct magnetic field variations are clear seen in quick-look plots around 20.30 UT. For further study of this event records of magnetic variations onboard CLUSTER satellites would be very important

EARLY AND LATE POSTOPERATIVE COMPLICATIONS IN PATIENTS WITH LOCALIZED AND LOCALLY ADVANCED RENAL CELL CARCINOMA

BACKGROUND: Modern Russian statistics show that the percentage of renal cell carcinoma (RCC) among all oncological diseases has increased and amounted to almost 5% in 2019. The main method of treating RCC is radical nephrectomy in localized RCC, which is supplemented by the removal of regional lymph nodes in locally advanced RCC. AIM: To evaluate early and late postoperative complications in patients with localized and locally advanced renal cell carcinoma. METHODS: We've analyzed the results of surgical treatment and postoperative complications in 378 patients with clinically proven localized and locally developed RCC. RESULTS: The total number of complications after surgical treatment of patients with localized and locally advanced RCC was 24 (6.3%) patients. Moreover, in the treatment of the localized form of RCC, postoperative complications are 3 times less common than in the locally advanced form of RCC (p <0.05). The most common complication after surgical treatment of RCC was bleeding which we observed in 11(2.9%) patients. CONCLUSION: After surgical treatment of RCC, the proportion of complications is not high, but they can have unpleasant consequences. In the late postoperative period the most common complication bleeding is followed by lymphorrhea and urinary tract infections

DIAGNOSIS OF GENETIC FORMS OF AZOOSPERMIA

AIM: To identify the main genetic causes of azoospermia. METHODS. The study included 92 patients with azoospermia. In all patients we carried out genetic tests - karyotyping, PCR-diagnosis of blood. RESULTS. Genetic disorders were found in 35 (38%) men. Of these, the majority of men were with Kleinfelter syndrome - 21 (60%) and deletions in the AZF regions of the Y chromosome - 11 (31.4%). CONCLUSIONS. Patients who have genetic abnormalities should receive comprehensive medical and genetic advice

Использование левосимендана при лечении нейрогенной стрессорной кардиомиопатии у пациентки с субарахноидальным кровоизлиянием (клиническое наблюдение)

We present a case of cardiogenic shock due to neurogenic stress cardiomyopathy (NSC) in a patient with nontraumatic subarachnoid hemorrhage caused by a ruptured aneurysm of the right pericallosal artery. Due to the catecholamine-resistant shock, levosimendan was administered under advanced hemodynamic control, including transpulmonary thermodilution and echocardiography. This resulted in an improved cardiac contractility and reduced demand for catecholamines. Full stabilization of hemodynamic parameters was achieved by day 5. In the discussion section we reviewed available published case reports of using levosimendan in stress cardiomyopathy treatment.Представили наблюдение кардиогенного шока вследствие нейрогенной стрессовой кардиомиопатии (НСКМП) у пациентки с нетравматическим субарахноидальным кровоизлиянием вследствие разрыва артериальной аневризмы правой перикаллезной артерии. В связи с рефрактерным к катехоламинам течением шока приняли решение об использовании левосимендана под расширенным гемодинамическим контролем, включающим в себя транспульмональную термодилюцию и эхокардиографию. На фоне терапии отмечали улучшение сократительной функции сердца, снижение потребности в катехоламинах. Полной стабилизации гемодинамики достигли к 5-м суткам. В обсуждении рассмотрели наблюдения лечения стрессовой кардиомиопатии с использованием левосимендана, представленные в литературе

Integrated reservoir characterization and modeling for enhanced hydrocarbons recovery from mature gas-condensate reservoirs: a case study of Big Escambia Creek field, Escambia County, Alabama, USA

The world is on the verge of energy crisis due to rising demand for fossil fuel to meet domestic and industrial energy requirements. In order to meet the rising fossil fuel need, the development of a framework for enhanced hydrocarbons recovery from mature reservoirs should be given a high priority given the fact that 70% of world oil production comes from mature reservoirs. The objective of this research project is to develop a framework for enhanced hydrocarbons recovery from mature reservoirs using Big Escambia Creek (BEC) field as a case study. This developed framework is hinged on accurate characterization of reservoir rock and fluid properties, successful modeling of variation of average reservoir pressures with time, and presentation of existing well models and how to appropriately represent them in numerical simulators to ensure performance of successful reservoir simulation studies. In order to ensure successful development of a framework, the Smackover reservoir portion of BEC field was comprehensively characterized to delineate the porosity and permeability profiles of the field using laboratory measured porosity and permeability data, as well as well log porosity data. In addition, the average reservoir pressure, which is required to estimate initial hydrocarbon in place, estimate hydrocarbon reserves, and monitor reservoir performance, was modeled with a decaying exponential function using static bottom-hole pressures available for some wells on the field. Furthermore, accurate modeling of reservoir fluid using available commercial fluid simulators, such as PVTi, was impossible due to high concentration of acid gas. Therefore, least square optimization technique was used to accurately model the fluid. The reservoir fluid PVT properties obtained through this technique were used successfully to estimate initial hydrocarbon in place and determine aquifer influence on BEC field using material balance calculations. The original hydrocarbon in place of 1.502 Tcf of gas obtained was in perfect agreement with earlier estimates made using pressure decline data and volumetric calculations. On the basis of this developed framework, simulation studies for enhanced hydrocarbons recovery could be performed on BEC field and other fields with similar rock and fluid properties in USA and around the world. (Published By University of Alabama Libraries