Hydrochemical Characterization of Nabeghlavi Underground Mineral Waters

Georgia is rich in groundwater deposits, which renew over time and are characterized by the best indicators of water quality and a stable regime. Groundwater is one of the main natural productive forces of Georgia, which plays an important role in the economic development and export industry. During 2015–2020, chemical composition of the Nabeghlavi mineral waters has been studied by the means of the modern unified methods. Almost all data from previous chemical analyzes have also been retrieved and systematized/collated. Using mathematical statistical analysis, the maximum, minimum, and mean arithmetic values of the major and specific components of water and the empirical deviation from the arithmetic mean have been calculated. Though comparison of the recent and historic data on chemical composition, based on the results of statistical analysis of the major ions, the natural fluctuation limits of the waters and stability of waters from all exploitation drill holes have been shown. According to the chemical composition and total mineralization there are three groups of waters in fresh and low mineralized category. It is shown that chemical composition of water from all exploitation drill holes meets requirements for the natural mineral water category, both the normative document of Georgia and directive of the European Commission.

Analysis and Visualization of Covid-19 Related Notifications Received at 112

The coronavirus pandemic has significantly changed a person's life and almost all areas of his activity. One of the organizations whose activities are directly related to the management of the pandemic is the Emergency Management Center 112. It is actively involved in the process of managing the coronavirus and has been working in a special mode for more than a year to provide timely and highly qualified services to every citizen. Сovid-19 monitoring system developed at the 112 Emergency Management Center is described, whose real-time stability has been compromised by the increasing number of incoming calls during the pandemic. Consequently, a new functionality has been created, the purpose of which is the optimal geographical distribution of ambulance crews. The article discusses the front-end part of this functionality. It also describes the process of integrating maps into the application, which results in the transformation of the desired data into map layers and visual representation. The application shows the number of Covid-19 cases along with an additional text. An example of Covid-19 cases map is shown. The illustrations are provided showing the statistical data of both current days and past period.

An Overview of Hydrogeological Works at Nabeghlavi Mineral Water Deposit and Replenishment of the Natural Resources of the Deposit by Atmospheric Precipitation

Mineral waters are very important resources of the country. Their moderate consumption and protection is possible through sustainable and efficient management. The paper presents an overview of hydrogeological works carried out on the Nabeghlavi carbonic mineral water deposit. Information on calculation of the natural resource replenishment coefficient with atmospheric precipitation based on the hydrogeological and meteorological data and characterization of geological-technical condition of exploitation drill holes is described. Coefficient of replenishment of the Nabeghlavi mineral water resources with infiltrated atmospheric precipitation has been determined by Darcy’s method. According to the reference historic data, back in 1986, the magnitude of the coefficient was 25,307 m3/ day, whereas in 2000-2020 it has equated 28,125 m3/day. Conventional average of these values made 26,715 m3/day, which is 90 times higher than the current approved operating reserve (296 m3/day) of the deposit.

Mathematical Models for Asymmetric Warfare

Differential equations developed by William Lanchester for combat models are still used by military theorists in traditional and asymmetric wars. The paper focuses on the asymmetric situation encountered in narrow exits on the battlefield, where it is impossible to concentrate the entire firepower. Based on the application of the Lancaster Equation, it is determined that in order to achieve parity, it is necessary to destroy targets by sequentially massaging fire. The mathematical model proposed for the destruction of forces by divisions even allows to determine how to divide the opposing forces into the optimal number for each battle. Based on the research, the influence of the time factor on the element of surprise is determined and a mathematical model is developed, which can determine the effective period of fighting the opponent.

Impact of Modern Technologies on Combat and Military Decisions

The history of the society development and its scientific and technological progress is constantly correlated with the history of wars. The desire to raise a person’s standard of living, the rapid pace of life and the aspiration to its high quality have always depended on inventions, technological innovations and the continuous process of development. Military science and the military industry are no exception. The importance of using modern technologies and precision intellectual weapons in a 21st century war is discussed. The issue of reconnaissance drones and the kinetic-strike capability of drones in combat is highlighted, as well as their support by space-based systems. This opened a new era in the art of modern warfare and pointed to the transformation of modern warfare. The article discusses features that have actually emerged in combat in airspace and cyberspace. All the challenges and problems that accompany military decision-making process are shown in the synthesis of these actions. The role and significance of reconnaissance and fighter drones in modern large-scale or local combat operations, especially for a small country like Georgia, are also discussed.

Special Device for Diamond Grinding of the Backup Surfaces and Perimeter of Articles from Nonmetallic Ceramic Materials

In developed countries, material scientists are working intensively to create high-strength (metallic) technical ceramics. If such a material is created, it will be possible to manufacture such parts of power units (transmissions) of cars as shafts, turbines, etc. In the future, the latest composite ceramic materials with unique properties will gradually replace metals in the production of machine parts. Special device for diamond grinding of articles from composite, non-metallic, brittle materials (technical ceramics on the base of SiC, Al2O3; polycrystalline diamond, composite – Si + SiC + diamond etc.) is a universal flat grinding machine that enables to grind with high productivity both supporting main surfaces and lateral side surfaces – perimeter of an article of prismatic shape. It is also possible to grind substrates of other configurations – round, oval, etc. Grinding depending on sizes of articles can be done of both single and group of articles. The grinding takes place by the means of spring feeding of the article by pneumatic system that enables to prevent breakage of articles from brittle non-metallic materials in process of machining and obtain maximum high quality of the machined surface.

Caucasian Rhododendron Grinding-Fixing Machine

An endemic plant species typical for the Caucasus is the Caucasian rhododendron (Rhododendron caucasicum Pall), which, due to its unique chemical composition, has many medicinal properties, therefore, folk healers have used it since ancient times to treat various severe and mild diseases. At the present stage of the development of science, the question arises about the possibility of using this most valuable plant for industrial purposes. The question is raised of the production of mate tea from the Caucasian rhododendron. The rhododendron processing technologies proposed so far are reviewed and it is shown that none of them can provide aromatic and taste indicators characteristic of tea mate in the resulting product due to the fact that most of them are based on the processing technology of ordinary black tea. It is substantiated that in order to obtain mate tea, it is necessary at the initial stage of processing to fix the raw material from rhododendron, cut it and grind it to sizes acceptable for packaging, remove excess moisture contained in the sheet and give the final product a light smoke aroma and a slightly bitter taste. To solve these problems, a schematic diagram of a new machine for the simultaneous grinding and fixing of the Caucasian rhododendron is proposed.

A New Device for Processing Caucasian Rhododendron

Technological processes differ from each other. Accordingly, the devices on which these technological processes are implemented also differ. As a rule, the optimal solution is to select the right machine or device for each process. This facilitates the entire process even in the event of a breakdown of any device on the production line. Such a machine can be replaced by another machine, manual labor, or the operation can be completely excluded. And if all technological operations are carried out on one machine, then its failure will lead to a complete stop of the entire technological process. The issue of processing the Caucasian rhododendron is considered and an innovative technology is presented, according to which its leaves are shock-frozen, crushed, freeze-dried and the product gets a light smoke aroma. It is shown that the use of different devices for each operation of this technological process can lead to microbiological clogging of raw materials, significant loss of cold and complicate the design of all equipment. Therefore, this process is best carried out in one universal device. A schematic diagram of a new device for processing rhododendron is presented, which ensures all technological operations (shock freezing, frozen leaf grinding, freeze-drying and giving the final product smoke aroma and bitter taste) without contact of the raw material with ambient air.

Diamond Grinding Technology of Flexural Strength Test Pieces of Super hard, Brittle, Composite-ceramic Materials and Technological Equipment

At the present stage of the revolutionary development of technologies, scientists from the leading countries of the world are working intensively to create qualitatively new materials whose physical-mechanical, electrical, thermal or other properties far exceed the basic constructions, armament or other metals used. Such materials are surface, brittle, composite ceramic materials (based on oxide and carbide ceramics, state-of-the-art surface compositions, polycrystalline diamond + Si  SiC and etc.). A progressive process for diamond grinding test samples from composite ceramic materials to determine the bending strength is discussed. The proposed technological process is based on an original and effective method for polishing the flat surfaces of articles made of difficult-to-process and composite materials - low-temperature precision grinding (LPG). Based on the results of many years and multilateral studies in the field of diamond processing of various non-metallic, composite and ceramic materials, optimum conditions for diamond polishing of mentioned materials have been determined and recommended. Technological equipment and equipment for processing composite and ceramic materials are also disclosed.

E-Commerce Taxation Paradigms in Georgia

Taxation of e-commerce is one of the most serious problems for the civilized world, including our country. The digital industry has put the country’s tax space in a post facto position, threatening the country’s fiscal sovereignty and the efficient functioning of the tax system. It is no longer an illusion that e-commerce opens a new era in taxation. The phenomenon of «borderless» – e-commerce seems to challenge the tax system adapted to it. Understanding the problem for this purpose is both an economic, social and political-economic necessity.