World Science

METHODOLOGY FOR DETERMINING LEAKS AND ENERGY SAVING IN UNDERGROUND GAS STORAGE

Lena Shatakishvili, Ketevan Berikashvili — Wed, 15 May 2024 00:00:00 +0000

The main task of any functioning gas transportation system is to supply reliable gas to all customers. Create a new underground storage and expansion and optimization of existing underground gas reservoirs is one of the priority directions for the development of the gas industry. The aim of the work is to determine the methodology of leakage and losses of underground gas reservoirs. There is a presented an analysis of the hysteresis loop of the underground gas reservoir compaction-removal cycle and the corresponding leakage.

THE METHODS OF THE SORBED QUANTITY OF THE DIFFUSION COEFFICIENTS AND POLYMERS LIQUID AREAS

A.D. Porchkhidze — Thu, 16 May 2024 00:00:00 +0000

Has been discussed diffusion coefficients, the amount of the liquid particles sorbed by quantity, as well as the methods of determining molecular masses of polymers. We were researching liquid area’s kinetics of vapor sorption on the MCBean scale. We’ll also determine the molecular masses of polymers by the viscozimetric method.

ANALYTICAL REVIEW OF THE PROBLEMS OF IMPROVING THE ENERGY EFFICIENCY OF DIESEL ENGINES AND REDUCING ATMOSPHERIC AIR POLLUTION

Sun, 23 Jun 2024 00:00:00 +0000

The paper analyzes the main directions for improving the energy efficiency of marine diesel power plants and reducing atmospheric air pollution from exhaust gases. Numerical study of fuel spraying characteristics by diesel injectors at injection pressures in the range from 50 to 300 MPa has been conducted.
Based on the analysis of the known designs of thermally insulated combustion chambers, the technology of manufacturing a pilot piston is proposed, which is based on the application of a ceramic coating using zirconium dioxide powder on the walls of the combustion chamber of the mass-production piston.

COMBINATION OF HYPERTENSION AND DIABETES MELLITUS IN THE PRACTICE OF A FAMILY DOCTOR

Sun, 16 Jun 2024 00:00:00 +0000

The relationship between arterial hypertension (AH) and type 2 diabetes mellitus (T2DM) has long been established based on the results of large-scale epidemiological and population-based studies. The number of patients with hypertension in combination with type 2 diabetes mellitus has been steadily increasing in recent years, increasing the risk of developing both macro- and microvascular complications, which progressively worsens their prognosis. LDL cholesterol is also a prognostic indicator of stroke risk in type 2 diabetes with a combination of several risk factors (hypertension and dyslipidemia), and early detection and early prescription of lipid-lowering therapy for the treatment or prevention of cardiovascular disease is especially important. In the presented clinical case in the patient on the background of rosuvastatin and fenofibrate administration there was a significant positive change in triglycerides from 3.8 mmol/l to 1.34 mmol/l. The problem of treatment effectiveness and improving the prognosis of patients with diabetes and hypertension remains complex. Success in treatment depends on compliance with the following provisions: the effectiveness of the antihypertensive properties of drugs (antihypertensive, hypoglycemic, hypolipidemic), the ability to achieve the target level of office blood pressure, SBP, since patients with diabetes mellitus with hypertension are mostly non-dippers; achieving and maintaining high adherence to therapy for many years.