In this article, the processes of using statistical methods in the marketing research of enterprises in the conditions of the market economy, its content, the use of today's research methods, the placement of advertisements in the market and the formation of quality marketing research are considered
17.06.2023 Volume 2 Issue 6 View more Download
This article examines how the referendum will provide new opportunities, including the impact of a number of factors on the growth of the tourism sector, such as attracting investment, modernizing infrastructure, developing cultural tourism for the economy and society, and improving conditions for business tourism
15.06.2023 Volume 2 Issue 6 View more Download
There are numerous impurities in wet-process phosphoric acid, among which manganese is one of detrimental metallic impurities, and it causes striking negative effects on the industrial phosphoric acid production and downstream commodity. This article investigated the adsorption behavior of manganese from phosphoric acid employing Sinco-430 cationic ion-exchange resin. Resorting FT-IR and XPS characterizations, the adsorption mechanism was proved to be that manganese was combined with sulfonic acid group. Several crucial parameters such as temperature, phosphoric acid content and resin dose were studied to optimize adsorption efficiency. Through optimization, removal percentage and sorption capacity of manganese reached 53.12 wt%, 28.34 mg·g−1 , respectively. Pseudo-2nd-order kinetic model simulated kinetics data best and the activation energy was evaluated as 6.34 kJ·mol−1 for the sorption reaction of manganese. In addition, the global adsorption rate was first controlled by film diffusion process and second determined by pore diffusion process. It was found that the resin could adsorb up to 50.24 mg·g−1 for manganese. Equilibrium studies showed that Toth adsorption isotherm model fitted best, followed by Temkin and Langmuir adsorption isotherm models. Thermodynamic analysis showed that manganese adsorption was an endothermic process with enhanced randomness and spontaneity
15.06.2023 Volume 2 Issue 6 View more Download
The article discusses the existing problems of handwriting recognition and the solution to the segmentation problem. The mode of operation and structural explanations of the model of the hybrid neural network CNN + LSTM + fuzzy CTS are given here. The efficiency of the hybrid model was demonstrated using a comparative analysis with the CNN, CNN + CTC, CNN + LSTM models. 90% of the recognition results for handwriting recognition were achieved in case of availability of sufficient dataset. Algorithms of fuzzy set theory for CTC in handwriting recognition have been developed. Based on these, effective results were obtained
13.06.2023 Volume 2 Issue 6 View more Download
In the article, an experimental device for condensing water and hydrocarbon vapors in a shell-and-tube heat exchanger was created and a method of operation was developed. In the process of condensing gas condensate vapors with water in a shell pipe device, experiments were carried out along the length of the condenser pipe. In the experimental device, the transition of gas condensate with a volume of 15 liters to the vapor state and the condensation of this steam in the shell pipe experimental heat exchanger were conducted. its boiling temperature is 2.5 times lower than that of water vapor. It was determined that the heat of condensation of water vapor at 60 оС is r1 =2317 kJ/kg, and when the temperature increases to 180 оС, it decreases r1 =1998 kJ/kg, i.e. by 1.15 times.
13.06.2023 Volume 2 Issue 6 View more Download
Improving the effectiveness of physics teaching is an urgent problem of today. An approach to assessing the acquisition of new physical knowledge, which is a system of criteria levels, where the transition to each subsequent level can be made only if the previous one is available. A method of teaching experimental activity to physics students based on the implementation of the system-activity approach with the help of a school physical experiment is offered. The main thing is the activity of methodology students in mastering not only the content, but also the process of acquiring new knowledge
13.06.2023 Volume 2 Issue 6 View more Download
The article examines and analyzes the internal reserves of innovative activities of industrial enterprises. Currently, the leading industrial countries apply various types of internal reserves to stimulate innovation and their activities
13.06.2023 Volume 2 Issue 6 View more Download
The purpose of researching the biological effectiveness of oligomer antipyrene-antiseptics, which contain sulfur, is to protect wood materials from termites. Termites cause serious damage to the wooden part of buildings and structures because of eating wood materials. In this research work, oligomer composites, which are biologically effective in combating termites, obtained physic-chemically. The biological effectiveness of the samples obtained researched in accordance with the requirements of GOST
13.06.2023 Volume 2 Issue 6 View more Download
SCIENCE & INNOVATION