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Study Of Rheological Properties Of Solutions And Pulp During Dicalcium Phosphate Formation Process, Navruzbek Ibraimovich Khurramov, Tulkin Isamurodovich Nurmurodov, Nilufar Negboevna Bozorova, Zarifa Umarovna Karimova 2020 PhD student, Navoi Branch of the Academy of sciences of the Republic Uzbekistan, 210100, Uzbekistan, Navoi, E-mail: [email protected], Phone: +99891-438-21-21;

Study Of Rheological Properties Of Solutions And Pulp During Dicalcium Phosphate Formation Process, Navruzbek Ibraimovich Khurramov, Tulkin Isamurodovich Nurmurodov, Nilufar Negboevna Bozorova, Zarifa Umarovna Karimova

Chemical Technology, Control and Management

This article presents the rheological properties of suspensions obtained on the basis of nitric acid decomposition of unfired phosphorites of the Central Kyzylkum, as well as the chemical compositions of dicalcium phosphate and solid residues after the filtration process. The mass-spectral analysis of the pure dicalcium phosphate salt obtained by ammonization of the liquid part separated from the solid residue and subjected to filtration was studied.


Developing Highly Efficient Industrial Contact Heat Exchanger, Khoshim Shayimovich Bakhronov, Abdumalik Abduvahobovich Akhmatov, Yorkin Bakhodirovich Kadirov 2020 Doctor of Technical Sciences, Professor, Department of Chemical Technology, Navoi State Mining Institute, Address: Galaba shoh st., 210100, Navai city, Republic of Uzbekistan E-mail: [email protected], Phone:+998-94-377-46-44;

Developing Highly Efficient Industrial Contact Heat Exchanger, Khoshim Shayimovich Bakhronov, Abdumalik Abduvahobovich Akhmatov, Yorkin Bakhodirovich Kadirov

Chemical Technology, Control and Management

The paper presents the results of an experimental study of the intensification of heat transfer of a swirling flow in a cylindrical channel with two tangential and axial swirlers. During the experiments, such parameters were measured as: air flow in front of the vortex apparatus; hot water consumption; pressure drop in the vortex apparatus; temperature of working media at the inlet to the apparatus and at the outlet of it. A method for intensifying the heat transfer process, which is based on swirling a gas stream by its tangential supply, has been developed and investigated. Experimental studies of the intensity …


Image Processing Of Technological Objects, Lyudmila Petrovna Varlamova 2020 Ph.D., Associate Professor, Tashkent University of Information Technology named after Muhammad Al Kwarazmi, Tashkent, Uzbekistan Phone: 93-5535563, E-mail: [email protected]

Image Processing Of Technological Objects, Lyudmila Petrovna Varlamova

Chemical Technology, Control and Management

The article considers the problem of creating a smoke detection and fire detection system for technological objects. Fire detection is carried out using a vision system. Monitoring of technological objects is carried out using an unmanned aerial vehicle. For further actions, processing and classification of images is necessary. When observing the technological apparatuses of the chemical and petrochemical industry, problems arise associated with the large size, distribution and extent of objects. There may be situations in which there are violations of the technological regulations and, as a result, the occurrence of fire, fire and smoke. Using the technology of unmanned …


Analysis Of Information Security Methods In Biosystems And Application Of Intelligent Tools In Information Security Systems, Sherzod Sayfullaev 2020 Tashkent University of Information Technologies named after Muhammad al-Khwarizmi Address: 108, Amir Temur st., 100200, Tashkent city, Republic of Uzbekistan E-mail: [email protected], Phone:+998-91-162-42-70.

Analysis Of Information Security Methods In Biosystems And Application Of Intelligent Tools In Information Security Systems, Sherzod Sayfullaev

Chemical Technology, Control and Management

In this paper, the methods of information protection in bio systems are studied. The paper considers the use of intelligent tools in information security systems and the use of adaptive information security systems. Several articles on the field of information protection in bio systems are analyzed. Disadvantages and advantages of neural network technologies in modern information security systems are described. The characteristics of bio systems and the specificity of DNA, the main features of the DNA code that provide information security and functional stability of bio systems data protection structure. Application of intelligent tools to create a comprehensive adaptive protection …


Electronic Spam Filtering Based On Neural Networks, Tulkun Fayzievich Bekmuratov, Fayzullajon Bakhtiyorovich Botirov, Elshod Dilshod ugli Haydarov 2020 SIC ICT of TUIT, Tashkent, Uzbekistan, E-mail: [email protected], Phone: +998 71 234 07 92;

Electronic Spam Filtering Based On Neural Networks, Tulkun Fayzievich Bekmuratov, Fayzullajon Bakhtiyorovich Botirov, Elshod Dilshod Ugli Haydarov

Chemical Technology, Control and Management

This article analyzes the problem of filtering spam messages and addressing spam messages, Bayesian theorems based on artificial intelligence, LVQ algorithms (LVQ learning vector quantization) and a filtering scheme for systems based on neural networks. The direct construction of an effective neural network model of spam filtering using database recognition technology is considered. The parameters of access to the neural network how to include predefined statistical and non-statistical attributes of messages are given. The structure of neural network technology for classifying emails is also considered. The procedure for analyzing incoming data using the tool included in the analytical platform Deductor …


Improving The Electrochemical Method Of Wastewater Treatment, Dilrabo Akramovna Muhammadieva, Diyor Asadullaevich Hadjibaev, Furkat Ilyasovich Erkabaev 2020 Tashkent Pharmaceutical Institute, 45 Aybek Street,UzbekistanTashkent 100015 E-mail: [email protected], Phone: +998974649525;

Improving The Electrochemical Method Of Wastewater Treatment, Dilrabo Akramovna Muhammadieva, Diyor Asadullaevich Hadjibaev, Furkat Ilyasovich Erkabaev

Chemical Technology, Control and Management

With an electrochemical method of wastewater treatment, the preliminary isolation of iron, calcium and magnesium compounds from them contributes to a more intensive recovery process. The purpose of this work is to improve the efficiency of electrochemical treatment of industrial wastewater contaminated with chromium(III) and chromium(VI) ions. The research has determined the optimal conditions for increasing the yield of chromium in the Park during electrochemical treatment of chromate-containing wastewater by using modified bentonite for pre - treatment of wastewater. Pre-softening of wastewater with modified bentonite before electrochemical treatment made it possible to increase the current yield of chromium from 17% …


New Methods For Obtaining Quality Drinking Water In A Water Treatment Plant, Djaloliddin Nosirovich Muxiddinov, Nilufar Abdusomi qizi Yunusova, Islom Abdisalim ugli Daynovov 2020 Tashkent State Technical University, Address: 2 Universitetskaya st., 100095, Tashkent city, Republic of Uzbekistan E-mail: [email protected], Phone:+998-90-806-40-25;

New Methods For Obtaining Quality Drinking Water In A Water Treatment Plant, Djaloliddin Nosirovich Muxiddinov, Nilufar Abdusomi Qizi Yunusova, Islom Abdisalim Ugli Daynovov

Chemical Technology, Control and Management

The article discusses modern methods, the scientific justification and the study of effective technologies in water treatment schemes for the removal of pollution of natural and man-made origin to produce high-quality drinking water. And also the proposed water treatment plant has a high resource and the ability to effectively purify water from a large number of contaminants and can be used to purify and provide high-quality drinking water to small settlements and industrial facilities located away from transport highways, as well as residential facilities of social institutions, enterprises Catering.


Procedure Formalization For Constructing An Adaptive Control System With A Reference Model Based On The Lyapunov Function, Tulkin Vafoqulovich Botirov 2020 Navoi State Mining Institute Address: 27 G`alaba shoh street, 210100, Navoi city, Republic of Uzbekistan E-mail: [email protected], Phone:+998-94-218-43-67;

Procedure Formalization For Constructing An Adaptive Control System With A Reference Model Based On The Lyapunov Function, Tulkin Vafoqulovich Botirov

Chemical Technology, Control and Management

Discusses the formalization of the procedure for constructing an adaptive control system with a reference model based on the Lyapunov function. It is shown that the asymptotic stability of the extended system of differential equations guarantees accurate tracking of the desired output signal of the model. At the same time, the expediency of analyzing the asymptotic stability of the system in extended space using the Lyapunov function is shown. The above algorithms help to stabilize the computational matrix inversion procedure and thereby increase the accuracy of estimating the adjustable parameter in an adaptive control system.


Distributed Information Space As An Associative Environment Of Communication Setting, Yusupbekov Rustambekovich Nodirbek, Shukhrat Manapovich Gulyamov, Nargiza Baxtiyorbekovna Usmanova, Malika Yuldashovna Doshchanova 2020 Tashkent State Technical University named after Islam Karimov Address: 2, University str., 100095, Tashkent, Uzbekistan;

Distributed Information Space As An Associative Environment Of Communication Setting, Yusupbekov Rustambekovich Nodirbek, Shukhrat Manapovich Gulyamov, Nargiza Baxtiyorbekovna Usmanova, Malika Yuldashovna Doshchanova

Chemical Technology, Control and Management

Modeling the structure of a distributed network can be based on the architecture of an associative infocommunication network, which displays the processes and mechanisms of interaction of components in the corresponding nodes of the structure. It is shown that for the description and functional representation of a distributed network, it is appropriate to apply decomposition for the field of software engineering, the purpose of which is to create theories that interact with each other according to well-defined rules. A conceptual representation of the distributed space behavior model is given. The paper discusses the modeling of the evolutionary search.


Study Of Temperature Profile In Drying Process, Shaxnoza Abduvaxitovna Sultanova, Jasur Esirgapovich Safarov, Tojiniso Tursunboyevna Raxmanova 2020 Tashkent State Technical University, Address: 2 Universitetskaya st., 100095, Tashkent city, Republic of Uzbekistan E-mail: [email protected], Phone: +99893 506-22-00;

Study Of Temperature Profile In Drying Process, Shaxnoza Abduvaxitovna Sultanova, Jasur Esirgapovich Safarov, Tojiniso Tursunboyevna Raxmanova

Chemical Technology, Control and Management

The article describes the simulation of the temperature field in a wide range of structural and operational parameters of the drying process. A qualitatively new representation of the temperature field profile in the chamber is revealed. As a result of the experiments, criteria were found for the unevenness of the temperature profiles on the pallets of the dispersion of the temperature of the material and the slope of the approximating line at fixed values of the average temperature of the substance. In the course of the work, an interrelation between the criteria of unevenness was revealed, which is clearly manifested …


Methods For Ensuring The Stability Of Design Reliability In Rural Telecommunications Network During Its Operation, Akbar Daniyarovich Normurodov Mr. 2020 Tashkent University of Information Technology Address: 108 Amir Temur st.,100000, Tashkent city, Republic of Uzbekistan E-mail: [email protected], Phone: +998977161969.

Methods For Ensuring The Stability Of Design Reliability In Rural Telecommunications Network During Its Operation, Akbar Daniyarovich Normurodov Mr.

Chemical Technology, Control and Management

The article discusses methods to ensure the stability of the design reliability of a rural telecommunications network during its operation. In rural areas, for a number of reasons, the power supply from the power supply network is interrupted at random times. In this regard, backup power sources are provided for the power supply of OLT equipment. To provide a telecommunication network with stable power supply, it is proposed to use solar sources of electricity.


Towards High Efficiency And High Power Density Converter: System Level Design, Modulation, And Active Emi Filters, Hongwu Peng 2020 University of Arkansas, Fayetteville

Towards High Efficiency And High Power Density Converter: System Level Design, Modulation, And Active Emi Filters, Hongwu Peng

Graduate Theses and Dissertations

Power converter exposes strong challenges to its efficiency, power density and reliability. For the grid-connected inverter application, three-level (3-L) T-type neutral-point-clamped (TNPC) inverters has higher efficiency and lower total harmonic distortion (THD) compared to two-level inverter. Hybrid switch concept combines the benefit of both silicon carbide (SiC) MOSFET and Si IGBT. By applying hybrid switch structure in 3-L T-type inverter, the total power density of 3-L TNPC inverter will be higher while the cost will be lower than that of all-SiC 3-L T-type inverter. The hybrid switch based 3-L TNPC inverter also imposes challenge to its modulation and control, a …


Simulation And Optimal Control Of Crude Oil Separation Process At Offshore Facilities To Improve Efficiency Of Oil And Condensate Recovery, Yee Kai Chin 2020 Universiti Malaya

Simulation And Optimal Control Of Crude Oil Separation Process At Offshore Facilities To Improve Efficiency Of Oil And Condensate Recovery, Yee Kai Chin

Student Works (2020-2029)

Crude oil separation process is the most crucial process in offshore production facilities in ensuring the well fluid is separated efficiently and persistently. Waxy crude or sluggish feed stream is the major disturbance that could cause operational issues and production loss due to process upset. The main objective of this research is to model offshore crude oil separation process and introduce state space control to optimize the control of total liquid and water level within the permissible range as well as to evaluate the effect of disturbances to the controls. This work presents two different modelling methods in developing three-phase …


Design Of Control System With Feedback Loop For A Pulsatile Pump, Ian Scott Sanders 2020 University of Arkansas, Fayetteville

Design Of Control System With Feedback Loop For A Pulsatile Pump, Ian Scott Sanders

Graduate Theses and Dissertations

This paper describes the design and implementation of a closed-loop proportional, integral, differential (PID) control system for a custom in-house pulsatile pump apparatus for the University of Arkansas Biomedical Department. The control system is designed to control a MOONS’ PL34HD0L8500 hybrid stepper motor using a dual H-bridge motor driver network with four pulse-width modulated (PWM) inputs to drive a pulsatile pump apparatus at motor stepping frequencies up to 2kHz. The speed of the motor is controlled from a pressure profile transmitted from an external source over RS-232 communication that specifies the motor speed, number of datapoints, and an array of …


Investigation Of The Process Of Self-Discharge Acid Batteries, Asilbek Kiryigitovich Mamatkulov, Eldor Ikromovich Ruzmatov, Gulniso Yulchievna Zhumaeva, Furkat Ilyasovich ERKABAEV 2020 Jizzakh Polytechnic Institute, E-mail: [email protected], Phone: +998975244433,

Investigation Of The Process Of Self-Discharge Acid Batteries, Asilbek Kiryigitovich Mamatkulov, Eldor Ikromovich Ruzmatov, Gulniso Yulchievna Zhumaeva, Furkat Ilyasovich Erkabaev

Chemical Technology, Control and Management

In this study, investigations were conducted on the process of self-discharge of acidic car batteries. The dependence of battery discharge on environmental temperature has been studied. It was found that the self-discharge of batteries increases by up to 60% over 12 months when the temperature rises from +100C to +400С. Replacing the tin in the electrode alloy with a more electronegative metal has been shown to reduce the self-discharge process by up to 2% per month. Because, the self-discharge of electrode batteries made of lead-calcium alloy is relatively low, the consumption of working fluid is relatively …


Using Of Parametric Nonlinear Lc-Circuits In Stabilized Transducers Of The Number Of Phases, Ivan Mikhaylovich Bedritsky, Kamila Komilovna Jurayeva, Laziz Kholboboyevich Bozorov 2020 Associate professor of the department "Power supply of railways"Tashkent institute of railway engineering, Address: 1 Adilkhodjaye st., 100167, Tashkent city, Republic of Uzbekistan

Using Of Parametric Nonlinear Lc-Circuits In Stabilized Transducers Of The Number Of Phases, Ivan Mikhaylovich Bedritsky, Kamila Komilovna Jurayeva, Laziz Kholboboyevich Bozorov

Chemical Technology, Control and Management

The use of nonlinear circuits of an autoparametric nature with inductive and capacitive elements for obtaining the necessary phase shifts in single-phase-three-phase converters is considered. The amplitude-phase relations between the stresses of windings located on different rods of a three-core core are obtained. The conditions under which it is possible to stabilize the stresses of the artificial phases of the Converter, as well as the phase shifts between them, are shown.


Application Of A Convolutional Neural Networks For Images Recognition, Avazjon Rakhimovich Marakhimov, Lyudmila Petrovna Varlamova 2020 Doctor of Technical Sciences, Professor National University of Uzbekistan named after Mirzo Ulugbek, Tashkent sity, Republic of Uzbekistan

Application Of A Convolutional Neural Networks For Images Recognition, Avazjon Rakhimovich Marakhimov, Lyudmila Petrovna Varlamova

Chemical Technology, Control and Management

In the problems of image recognition, various approaches used when the image is noisy and there is a small sample of observations. The paper discusses nonparametric recognition methods and methods based on deep neural networks. This neural network allows you to collapse images, to perform downsampling as many times as necessary. Moreover, the image recognition speed is quite high, and the data dimension is reduced by using convolutional layers. One of the most important elements of the application of convolutional neural networks is training. The article gives the results of work on the application of convolutional neural networks. The work …


Remote Measurement Of Plant Biomass By Picosecond Laser Radiation, Abdushukur Abdugafurovich Mukhamedov, Abdirashid Saribaevich Rysbaev, Shamsiddin Norchaevich Ernazarov 2020 Cand. of Phys. Math.Sc., As. Professor of the Tashkent Institute of Chemical Technology, Адрес: 32, Alisher Navoi st.,100011 Tashkent city, Republic of Uzbekistan, Phone: +99897-333-10-92, E-mail: [email protected];

Remote Measurement Of Plant Biomass By Picosecond Laser Radiation, Abdushukur Abdugafurovich Mukhamedov, Abdirashid Saribaevich Rysbaev, Shamsiddin Norchaevich Ernazarov

Chemical Technology, Control and Management

A description is given of a high-speed optical recording system that uses a solid-state yttrium-aluminum garnet Nd3+ laser that generates a train of picosecond laser pulses. It is shown that by registering and temporarily scanning the secondary fluorescence radiation excited by a sequence of picosecond pulses, it is possible to remotely determine the biomass of plants based on a prematurely created bank of laboratory data.


International Higher Education Cooperation Under Conditions Of Fuzzy Terminology: Intellectual Mobility Vector, Ulugbek Vasikovich Mannanov, Igor Ivanovich Gancherenok 2020 Doctor of Technical Sciences, Professor, Vice-Rector for International Relations of the Tashkent State Technical University named after Islam Karimov, Address: 2, University str., 100095, Tashkent, Uzbekistan

International Higher Education Cooperation Under Conditions Of Fuzzy Terminology: Intellectual Mobility Vector, Ulugbek Vasikovich Mannanov, Igor Ivanovich Gancherenok

Chemical Technology, Control and Management

Terminology analysis of higher education internationalization process concerning joint educational programs is fulfilled. Fuzziness of used terminology is demonstrated. Joint higher education establishments development in the framework of fractal model is suggested as a strategic direction of higher education internationalization, enhancement of its quality and a concept of effective intellectual mobility.


Synergetic Control Of Nonlinear Dynamic Objects, Isomiddin Siddikov, Komil Usmanov, Noilakhon Yakubova 2020 Tashkent State Technical University, Address: 2 Universitetskaya st., 100095, Tashkent city, Republic of Uzbekistan E-mail: [email protected], Phone:+998-90-359-52-68;

Synergetic Control Of Nonlinear Dynamic Objects, Isomiddin Siddikov, Komil Usmanov, Noilakhon Yakubova

Chemical Technology, Control and Management

Considers the synthesis of effective control algorithms for a chemical reactor, which is the main one in the production of butyl alcohol. The method based on synergetic approach for transferring the apparatus from one capacity to another (specified) maintaining the required quality of the target component is proposed in order to ensure the stabilization of the concentration of target component at the outlet of the reactor under the conditions of uncertain disturbances affecting to an object. A mathematical model of the process based on a stoichiometric matrix taking into account the physicochemical properties of the process is developed. The control …


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