bluuebunny/crossref_metadata_2025_split huggingface dataset:
The resistance to pulling the working part where the manure juice is poured locally
Authors: Khudayarov B , Kuziev U , Sarimsakov B , Khudaykulov R 
Published: July 2020

AbstractThe object of the research consists of the architecture of the root system of intensive garden soil and trees, the process of interaction of the aggregate and its working part with the soil and roots, which pour the fertilizer juice locally. The only way to grow ecologically clean products from the garden is to feed the fruit trees locally with manure juice. In intensive gardens, it is advisable to pour the manure juice into the zone of branching tree roots 0.8–0.1 m long, 20–30 sm deep, and an average width of 15 sm. In the process of cutting the soil and roots of the working part of the fertilizer juice pouring unit, the force of gravity is formed. A dynamometer was used to determine the force required to cut the roots. To do this, it was dag a hole of 80 sm long, 30 sm deep and 15 sm wide along the row, without damaging the roots, leaving a distance of 20 sm directly from the trunk of the tree in the garden. The soil-cleaned roots were pulled into a dynamometer loop, pulled until they broke, and the breaking force was determined. For gardens, pouring sap on average 1 m long, 25-30 sm deep and 12-15 sm wide, leaving a protection zone of 20-25 sm from the trunk, increases the efficiency of fertilizer use. In the local method, the gravitational resistance of the working part, which pours the juice to depth, is on average 3.5 kN.
The new production of electrotechnology cottonseed oil and energy efficiency rating
Authors: Turdiboyev A , Akbarov D 
Published: July 2020

Abstract
Oil and fat products in food mix clusters, especially from technical seeds; cotton oil which has a specific character is one of the most important products for our domestic needs. Demand for oil and fat products, the growing demand of the population, and corporate foodstuffs to meet the growing population of the country. The article deals with the issues of increasing energy efficiency in obtaining oil from cotton seeds. The relationship between the amount of oil obtained and the degree of damage to cotton seed pulp is shown. Electropulse treatment of cotton seeds is expected to increase the amount of oil produced and to reduce energy costs in the technological process. As a result of applying the proposed technology, the process of pressing and squeezing oil from cottonseed seeds, reducing the duration of the frying of seeds, in turn, makes it possible to reduce the extracted technical oil.
Electric pulse treatment of organic waste before anaerobic fermentation
Authors: Muratov H , Imomova N , Ergashev Z , Sultonov M 
Published: July 2020

Abstract
One of the promising areas of processing organic waste from agriculture is through methane fermentation in biogas plants. They have important advantages over other methods of processing organic waste. Based on these problems, the article describes a method of processing organic waste under anaerobic conditions using electric pulse treatment of organic waste before loading into a biogas plant. The parameters of the production process of the bioenergy plant had the following values: humidity of organic waste 88-94%; the pressure of the gas phase in the bioreactor -2-3 kPa; the dose of daily updating of the mass volume in the bioreactor is 10% / day; the duration of one cycle of mixing 10 min; the frequency of daily mixing 17 days−1. Based on the equation, taking into account the listed optimal values of the factors, the biogas yield per 1 kg of OM was calculated and 0.146 m3 of BG/kg of OM was obtained. Laboratory and production results are given, as well as a comparison of the data obtained.
Advanced machine for sorting potatoes tubers
Authors: Bahadirov G , Sultanov T , Umarov B , Bakhadirov K 
Published: July 2020

Abstract
The article provided the results of studies to improve the design of a machine for potato sorting, the working surface of which consists of belts at different speeds. The aim of the work is to increase the accuracy of potato sorting according to their external dimensions, without damage. Using theoretical, one-factor, and multi-factor experiments and experiments in production conditions, the following optimal parameters of the improved patented machine for sorting potato were established: - the speed of a slow-moving belt of 0.4 m/s; - the speed of a fast-moving belt 0.6 m/s; - the angle between adjacent belts 0.46′26.
With these values of the factors, the accuracy of the criteria of the sorting machine is 95%.
An experimental model of the machine tested on the fields of farms of the Ferghana region of the Republic of Uzbekistan.
In the process of potato sorting, it was revealed that the indicator of damage to potato in the course of the experiments did not exceed 0.5%. It was found that to achieve 95% accuracy of sorting, at a feed speed of potato heap onto the belt surface of the machine 4.5 kg per second, the angle between the belts should be 0.46′26, the speed of the slow-moving belt should be 0.4 m/s and the speed of the second should be 0.6 m/s.
Mathematical model of oscillations of a railway tank car with partial fillingunder shunting collision
Authors: Bespalko S , Grigoriev P , Ibodulloev Sh , Turajonov K , Numonov A 
Published: July 2020

Abstract
This article is devoted to simulating longitudinal vibrations of the tank car in case of partial filling with liquid during shunting collision. A brief overview of studies of the movement of solid bodies with liquid was performed. The design scheme of cars, represented by a 4-mass system with elastically-dissipative connections, has been developed. A system of differential equations of car motion according to the main equation of dynamics has been compiled. The mathematical model of liquid cargo oscillations based on shallow water theory is derived. In integration, the characteristic method and Euler method are applied. It is envisaged to transfer parameters between the mathematical model of cars (tank acceleration) and the mathematical model of liquid load (pressure forces on the bottoms). The methodology is implemented in the C++ Builder programming environment. According to the developed method, a study of the shunting collision with the tank at incomplete filling was carried out. The dependence of the reaction in the automatic coupling on time has two bursts. The maximum reaction is also dependent on the impact rate and the degree of filling of the tank.
Selection of electrode materials for membrane less fuel cells based on immiscible liquids
Authors: Tarantseva K , Yakhkind M , Politaeva N , Tarantsev K , Korosteleva A , Emurlaeva E 
Published: July 2020

Abstract
The possibility of using various materials as electrodes for membraneless fuel cells based on immiscible liquids, both from the standpoint of the thermodynamic possibility of the process and from the point of view of their corrosion resistance, is considered. The corrosion resistance of materials from alloys based on iron, as well as carbon was investigated for use as electrodes in membraneless fuel cells based on immiscible liquids. The possibility of using them instead of electrodes based on ruthenium and platinum in the studied alkaline aqueous ethanol system was shown. It was found that the highest electromotive force in the system occurs when using an activated carbon anode in the top ethanol phase and a carbon steel 10 cathodes in the bottom aqueous phase. The possibility of using activated carbon instead of a ruthenium-coated titanium electrode and platinum-coated titanium electrode, at almost equal exchange currents, will significantly reduce the cost of manufacturing a fuel cell. Thus under certain conditions, this type of fuel cell can compete with membrane fuel cells that have received industrial implementation
Stabilization of mechanical system with holonomic servo constraints
Authors: Khusanov K 
Published: July 2020

Abstract
The proposed study is devoted to the derivation of the equation of disturbed motion of mechanical systems with releasing servoconstraints, in which the multipliers of the normal and tangential components of the servoconstraints reaction forces are taken as control parameters. A technique is proposed for determining the reaction forces of servoconstraints providing motion stabilization relative to the manifold determined by holonomic servoconstraints. As an example, the problem of a gyroscope in a gimbal mount with holonomic releasing servoconstraints is considered.
Research on Biparametric Resonant Displacement Sensors Deviation
Authors: Sanbetova A , Sulliev A , Kasimov Sh 
Published: July 2020

Abstract

BPRS displacement and its characteristics showed that the possible causes of deviations are imperfections of the method, operating principle, manufacturing inaccuracy, the volatility voltage amplitude of the power source, its form, and frequency, as well as other adverse external conditions.
The most important characteristic of biparametric resonance sensors (BPRS) of displacement, like any measuring transducer, is its deviation [1].
In this work, the deviation of the BPRS movement was estimated by the method of parametric structural schemes (PSS) [3]. The advantage of this method is the ability to analyze deviation that is invariant from the physical nature of the phenomena occurring within the sensors. Besides, this method is visual and convenient when compiling deviation equations that take into account all their types.
The PSS of the developed BPRS displacement taking into account possible sources of deviations is shown in Figure 1.
In view of the systematic and random component of the deviation of each elementary transformation according to PSS, it is allowed to write the following system of equations for the right section of the BPRS:
Parameters and indicators of the longitudinal-transverse oscillation sieve
Authors: Astanakulov K 
Published: July 2020

Abstract
The work quality of the grain cleaning machines depends on work indicators of the sieve. Based on this, longitudinal-transverse oscillation sieve developed for grain cleaning machine. The developed sieve researched theoretically and experimentally. According to the researches, it was defined that the longitudinal oscillation of the grain-cleaning sieve n

fr
= 140 – 175 rpm, the amplitude of the longitudinal oscillations A

l
= 30 mm, the amplitude of the transverse oscillations A

t
= 3 – 5 mm, and the slope angle α

s
=14°. In these operating parameters work indicators of the sieve consisted of the grain losses is not more than 0.5 % and cleaning efficiency is 99.6 %. It found that the quality indicators of the longitudinal-transverse oscillation sieve on the same loads are 1.2 – 2.3 times higher than the longitudinal oscillation sieve.
Electrotechnological treatment against diseases found in almond trees grown in arid lands
Authors: Baizakov T , Bozorov E , Yunusov R , Yusupov Sh 
Published: July 2020

Abstract
This article explains the main diseases of horticulture trees and almonds, grown on the slopes of the hills. Currently, the protection of the environment, especially the protection of land and water resources from the effects of various toxic substances, is one of the main problems of world civilization. During the financial and economic crisis in the world, the Republic of our country is currently using high-quality land resources, introducing advanced scientific and technical agricultural technologies, producing low-quality and high-quality crops. One of the important problems. Management and control of the use of the land Fund, improvement of land relations, and effective use of public land in General. Application of electrical techniques for growing almonds, pistachios, nuts, and fruit-bearing products in the foothills. The root system of almonds clings to fungal diseases, that is. nematodes. When nematodes swell and become inflamed in the passages of tubers, they destroy the tree, especially young seedlings. We offer electrotechnical treatment for the treatment of nematode diseases of almond roots and get the results of electrotechnical experiments. To get the results of this experiment faster, we get the results by comparing photon measurements with the remote infrared spectrum. The use of electrical techniques for growing almond trees and fighting nematode diseases caused by its roots is considered, and the results of preliminary research are presented. It also provides a brief overview of the use and control of photogeometric methods.
Computer modeling the moldboards’ surface in autocad system
Authors: Juraev T 
Published: July 2020

Abstract
There are considered the tasks of the computer modeling of moldboard’s working surface in the article. The proposed solution was developed by geometric and computer modeling of moldboard’s working surface elements. As surface elements were chosen the frontal contour, a directory curve, and the generative lines with their pre-set conditions, which were given by specialists. The geometric models of working surface elements, which were developed based on research results were implemented in the AutoCAD system. The researches were carried out using the constructive geometric modeling methods and systems and based to surface modeling methods of Descriptive Geometry and traditional methodology of designing the moldboards. The proposed models, algorithms, and methodology can reduce the design period, simplify the geometric parameters setting, and facilitate the work of designers. The solution is required in educational, research, and production processes in Agriculture Engineering and can be used in developing other technical objects with geometrically complex surfaces.
Mathematical simulation of transfer mechanisms of crocheting potato harvesting machine
Authors: Matmurodov F , Dustkulov A , Abdiyev N 
Published: July 2020

Abstract
The article proposes a new basic scheme of a potato harvesting machine, with many times the separation of graff impurities from potato tubers composition. The transmission mechanisms of the newly developed crocheting potato harvesting machine are mathematically simulated. This model will help the potato harvesting machine developers to determine the required dimensional and dynamic parameters, which are necessary for the development of new machine design. The proposed concept to a certain extent separates the impurities of a heap of potato tubers. Separating devices and improved separator-elevator mechanisms will help to better separate the soil lumps and stone from potato tubers. The mathematical model created by the driving mechanisms of the potato harvester allows you to find the values of the movement on the corresponding working mechanisms. This model will help the developers of the potato harvester to determine the desired dimensional and dynamic parameters that are necessary to develop a new machine design.
Low-power solar stations on dam surfaces of reserrvoirs
Authors: Denmuhammadiev A , Shoyusupov Sh , Chulliev Y 
Published: July 2020

Abstract
Agriculture in the Republic of Uzbekistan is based on irrigated agriculture, therefore, not all rivers existing in the country fully satisfy the needs of consumers, and water resources are accumulated mainly from reservoirs. From this point of view, the strength of the dams of these reservoirs has been studied in detail. However, in most cases, the external slopes of the dams of these artificial hydraulic structures are not used. This, in turn, requires new scientific solutions for the development of solar energy in Uzbekistan, where the amount of solar radiation is quite large. As an example, to study this problem, the amount of seasonal solar radiation in the southeastern region of the republic was obtained using simulation values using a geographic information system on the ArcGIS 9.3 platform and a seasonal map of solar radiation was developed. At the same time, to ensure the efficient operation of solar photovoltaic installations made of photovoltaic cells based on semiconductor silicon materials, it is proposed to use the external slope of the Talimarzhan dam located in this territory. This, in turn, makes it possible to eliminate the problem of preventing the drop in the coefficient of performance (COP) of solar photovoltaic cells, which is an important working part, with an increase in one of the most negative external factors - temperature.
The results show that based on the generated direct electric current from the solar photovoltaic station, the following can be supplied: lighting system for the reservoir, uninterrupted power supply of synchronous motors installed at pump station №7, consumers of auxiliary needs of the hydroaccumulative power station, which is planned to be installed in the reservoir, potential electricity consumption, consisting of from tourism services infrastructure to the development of ecotourism.
Scheme of conditioning in room based on evaporative air cooling system using solar energy
Authors: Anarbaev A , Zakhidov R , Mukhtarov F 
Published: July 2020

Abstract
The article is devoted to the development of promising low-power evaporative cooling systems using solar energy. At the same time, the placement of elements of the system in determining the temperature, the humidity of the air in such indoor areas is determined by the parameters at which the most favorable conditions for the optimal climate in the room are created. The article presents the structural and thermodynamic parameters of the developed two-stage evaporative cooler air. The creating two-stage evaporative cooling installation is shown the efficiency and effectiveness of the cooling air. Given preliminary studies where study the possibility of indoor climate and presented their results. Requirements to ensure the indoor climate. The test evaporative air cooler with rotated regenerative heat exchanger has a design air capacity of 160 m3 / h and 200 W in the cold, it provides for an independent change in the rotation speed of heat exchangers, a change in the amount of sprayed water. The total consumed electric power is not more than 45 watts. Achieved cooling 7°C at an ambient temperature of 35÷40°C (July-August 2019).
Dynamic calculation of boxed design of buildings
Authors: Usarov M , Mamatisaev G , Ayubov G , Usarov D , Khodzhaev D 
Published: July 2020

Abstract
A method for dynamic calculation of a box-like structure, consisting of interconnected longitudinal and transverse plate and beam elements is developed. The problem is posed of spatial vibrations of the box-like structure of a building under dynamic impact determined by its base motion according to a sinusoidal law. It is assumed that the external load-bearing walls of the building, perpendicular to the direction of the seismic effect, work on transverse bending only. The interior panels, located in the direction of external impact, are subjected to tension-compression and shear in their planes. Equations of vibrations of the points of panels, box beams, boundary and initial conditions of the problem are given. In the areas of butt joints of panels, full contact conditions are set to ensure the equality of displacements and stresses. Within the framework of the finite difference method, a methodology was developed for dynamic calculation of box-like structures. Numerical results of stresses over time in the hazardous areas of the box were obtained. The laws of changes in the maximum stress values in characteristic sections of the panels are graphically presented as a function of time.
Software package of mathematical modeling and structure for solving the dynamics problems of structurally-inhomogeneous shell structures
Authors: Salimov Sh 
Published: July 2020

Abstract
On the basis of the principle of modularity, an algorithm and software package for dynamic calculation of structurally-inhomogeneous multiply connected shell units that are the elements of hydro-technical structures are developed in the paper. The purpose of the module is to carry out certain transformations of the initial (source) information into a unique result. The development prospects of construction of various hydro-technical structures, aircraft, rocket and space machinery, shipbuilding, chemical engineering and many other branches of modern technology are characterized by a complication of design decisions in projecting and calculation of objects that present multiply connected spatial shell structures subjected to static and dynamic effects. Multiply connected structures, (such as hydro-technical structures), usually include a wide range of elastic and visco-elastic deformable elements with significantly different rheological properties in the form of blocks of plate stacks, tubular, cylindrical and prismatic shell structures of complex geometry, with attached masses, various types of reinforcement, supports, containing a large number of elastic and visco-elastic couplings with significantly different functions of heredity. Obviously, the search for exact analytical solutions to dynamic problems for structurally inhomogeneous visco-elastic shell structures is doomed to failure, the only possibility of engineering implementation is to build numerical and numerical-analytical algorithms with the subsequent use of modern computers. The solution to dynamic problems involves a numerical simulation of the stress-strain state (SSS) of the structures under consideration.
Modal analysis of frameless arches made of thin-walled steel profiles
Authors: Rybakov V , Jos V , Raimova I , Kudryavtsev K 
Published: July 2020

Abstract
The article is devoted to the modal analysis of frameless arch structures based on lightweight gauge steel structures (LGSS). The relevance of the study is due to the need to take into account dynamic effects when calculating the load-bearing capacity. Dynamic loads are a crucial factor affecting the stress-strain state of arch structures. The paper presents theoretical studies of the influence of the main geometrical parameters of the arch structure made of cold-formed thin-walled steel profiles on the first eigenfrequency. The dependences between the dimensions of arched structures and eigenfrequencies are obtained. It is proved that to determine the load-bearing capacity of frameless arch structures with the span L > 12 m, it is necessary to determine the eigenfrequencies of vibrations of the structure.
RETRACTED: The impact that crushed rubber can have on the quality of bitumen and asphalt concrete
Authors: Sidikova T , Barxanadjyan A , Hakimov R , Sabirova D , Mirsaatov R 
Published: July 2020

Abstract
The results influence of finale dispersed rubber crumb on the properties bitumen and asphalt concrete are presented in the study. The parameters of the optimal regime of bitumen and rubber crumb mixing are established. The influence on the rubber crumb mixing with bitumen or added directly in the process of asphalt concrete mixing on the properties of asphalt concrete is studied. The effects that fine rubber has on the properties of petroleum bitumen and asphalt concrete are measured. The best options available for combining bitumen and rubber crumb are given. Moreover, it is also described how and to what extend crumb can influence the quality of rubber-bitumen binder for roads and how rubber-bitumen binder is affected when crump is added to this asphalt mixture. The influence that rubber crumbs have on the quality of bitumen and asphalt concrete. In the study, the influence of crumb on the properties of bitumen and asphalt concrete are shown. The conditions at which a high-quality mixture of bitumen and rubber crumb can be produced. Furthermore, the effects of crumb on the rubber-bitumen binder and the direct introduction of crumb into mixture are thoroughly investigated.